FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Yerkes, KL
Scofield, JD
Courson, DL
Jiang, H
AF Yerkes, Kirk L.
Scofield, James D.
Courson, David L.
Jiang, Hua
TI Steady-Periodic Acceleration Effects on the Performance of a Loop Heat
Pipe
SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
LA English
DT Article
ID OPERATION
AB The objective of this research is to experimentally investigate the transient operating characteristics of a titanium-water loop heat pipe subjected to a combined steady-state evaporator input heat rate and a steady-periodic acceleration field. For this experimental investigation, a steady-periodic acceleration field, in the form of a sine wave, was generated using a centrifuge table. Radial acceleration peak-to-peak values and frequency of the sine wave were defined prior to conducting each experimental run and ranged from 0.5gar10.0g and 0.01Hzf0.1Hz, respectively. Evaporator input heat rate and condenser cold plate coolant temperature were varied, 300WQin600W and 30 degrees CTcp56 degrees C, respectively. In some cases, acceleration driven forces complimented the thermodynamic forces, improving loop heat pipe dynamical performance. However, the converse was also true in that transient acceleration driven forces also appeared to counter thermodynamic forces or excite natural frequencies of the loop heat pipe. This resulted in immediate failure of the loop heat pipe to operate, delayed failure, or in some cases, the loop heat pipe operated in a stable manner but in a degraded condition.
C1 [Yerkes, Kirk L.] US Air Force Res Lab, Aerosp Syst Directorate, AFRL RQQI, Wright Patterson AFB, OH 45433 USA.
[Scofield, James D.] US Air Force Res Lab, Aerosp Syst Directorate, AFRL RQQE, Wright Patterson AFB, OH 45433 USA.
[Courson, David L.] Univ Dayton, Res Inst, Energy Technol & Mat Div, Dayton, OH 45469 USA.
[Jiang, Hua] Gen Elect Aviat, Gen Elect Aviat Div, Dayton, OH 45419 USA.
RP Yerkes, KL (reprint author), US Air Force Res Lab, Aerosp Syst Directorate, AFRL RQQI, Wright Patterson AFB, OH 45433 USA.
NR 8
TC 1
Z9 1
U1 0
U2 3
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0887-8722
EI 1533-6808
J9 J THERMOPHYS HEAT TR
JI J. Thermophys. Heat Transf.
PD JUL
PY 2014
VL 28
IS 3
BP 440
EP 454
DI 10.2514/1.T3900
PG 15
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA AM1QK
UT WOS:000339622500008
ER
PT J
AU Grantz, DA
Jackson, A
Vu, HB
Burkey, KO
McGrath, MT
Harvey, G
AF Grantz, D. A.
Jackson, A.
Vu, H. -B.
Burkey, K. O.
McGrath, M. T.
Harvey, G.
TI High Ozone Increases Soil Perchlorate but Does Not Affect Foliar
Perchlorate Content
SO JOURNAL OF ENVIRONMENTAL QUALITY
LA English
DT Article
ID UNITED-STATES; NATURAL PERCHLORATE; TERRESTRIAL PLANTS; BACKGROUND
LEVELS; ACCUMULATION; LETTUCE; NITRATE; WATER; CHLORIDE; VEGETATION
AB Ozone (O-3) is implicated in the natural source inventory of ClO4-, a hydrophilic salt that migrates to groundwater and interferes with the uptake of iodide in mammals, including humans. Tropospheric O-3 is elevated in many urban and some rural areas in the United States and globally. We previously showed that controlled O-3 exposure at near-ambient concentrations (up to 114 nL L-1, 12-h mean) did not increase foliar ClO4-. Under laboratory conditions, O-3 has been shown to oxidize Cl-to ClO4-. Plant tissues contain Cl- and exhibit responses to O-3 invoking redox reactions. As higher levels of O-3 are associated with stratospheric incursion and with developing megacities, we have hypothesized that exposure of vegetation to such elevated O-3 may increase foliar ClO4-. This would contribute to ClO4- in environments without obvious point sources. At these high O-3 concentrations (up to 204 nL L-1, 12-h mean; 320 nL L-1 maximum), we demonstrated an increase in the ClO4- concentration in surface soil that was linearly related to the O-3 concentration. There was no relationship of foliar ClO4- with O-3 exposure or dose (stomatal uptake). Accumulation of ClO4- varied among species at low O-3, but this was not related to soil surface ClO4- or to foliar ClO4- concentrations following exposure to O-3. These data extend our previous conclusions to the highest levels of plausible O-3 exposure, that tropospheric O-3 contributes to environmental ClO4- through interaction with the soil but not through increased foliar ClO4-.
C1 [Grantz, D. A.; Vu, H. -B.] Univ Calif Riverside, Dep Bot & Plant Sci, Kearney Agr Ctr, Parlier, CA 93648 USA.
[Jackson, A.] Texas Tech Univ, Dep Civil & Environm Engn, Lubbock, TX 79409 USA.
[Burkey, K. O.] ARS, USDA, Plant Sci Res Unit, Raleigh, NC 27607 USA.
[McGrath, M. T.] Cornell Univ, Long Isl Hort Res & Extens Ctr, Riverhead, NY 11901 USA.
[Harvey, G.] US Air Force, Wright Patterson AFB, OH 45433 USA.
RP Grantz, DA (reprint author), Univ Calif Riverside, Dep Bot & Plant Sci, Kearney Agr Ctr, 9240 South Riverbend Ave, Parlier, CA 93648 USA.
EM wdagrantz@ucanr.edu
RI Jackson, William/B-8999-2009
FU 711 Human Performance Wing, Air Force Research Laboratory and
Aeronautical Systems Center, Environmental Division [FA8650-10-2-6050]
FX This material is based on research sponsored by the 711 Human
Performance Wing, Air Force Research Laboratory and Aeronautical Systems
Center, Environmental Division, under Agreement no. FA8650-10-2-6050.
The U. S. Government is authorized to reproduce and distribute reprints
for Governmental purposes notwithstanding any copyright notation
thereon. The views and conclusions contained herein are those of the
authors and should not be interpreted as necessarily representing the
official policies or endorsements, either expressed or implied, of the
711 Human Performance Wing, Air Force Research Laboratory and
Aeronautical Systems Center, Environmental Division or the U. S.
Government.
NR 45
TC 0
Z9 0
U1 5
U2 11
PU AMER SOC AGRONOMY
PI MADISON
PA 677 S SEGOE RD, MADISON, WI 53711 USA
SN 0047-2425
EI 1537-2537
J9 J ENVIRON QUAL
JI J. Environ. Qual.
PD JUL-AUG
PY 2014
VL 43
IS 4
BP 1460
EP 1466
DI 10.2134/jeq2013.11.0464
PG 7
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA AL6WC
UT WOS:000339273000036
PM 25603093
ER
PT J
AU Fried, DL
Riker, J
Agrawal, B
AF Fried, David L.
Riker, Jim
Agrawal, Brij
TI Signal-to-noise ratio limitations for intensity correlation imaging
SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND
VISION
LA English
DT Article
AB Intensity correlation imaging (ICI) is a concept which has been considered for the task of providing images of satellites in geosynchronous orbit using ground-based equipment. This concept is based on the intensity interferometer principle first developed by Hanbury Brown and Twiss. It is the objective of this paper to establish that a sun-lit geosynchronous satellite is too faint a target object to allow intensity interferometry to be used in developing image information about it-at least not in a reasonable time and with a reasonable amount of equipment. An analytic treatment of the basic phenomena is presented. This is an analysis of one aspect of the statistics of the very high frequency random variations of a very narrow portion of the optical spectra of the incoherent (black-body like-actually reflected sunlight) radiation from the satellite, an analysis showing that the covariance of this radiation as measured by a pair of ground-based telescopes is directly proportional to the square of the magnitude of one component of the Fourier transform of the image of the satellite-the component being the one for a spatial frequency whose value is determined by the separation of the two telescopes. This analysis establishes the magnitude of the covariance. A second portion of the analysis considers shot-noise effects. It is shown that even with much less than one photodetection event (pde) per signal integration time an unbiased estimate of the covariance of the optical field's random variations can be developed. Also, a result is developed for the standard deviation to be associated with the estimated value of the covariance. From these results an expression is developed for what may be called the signal-to-noise ratio to be associated with an estimate of the covariance. This signal-to-noise ratio, it turns out, does not depend on the measurement's integration time,.t (in seconds), or on the optical spectral bandwidth,.. (in Hertz), utilized-so long as.t.. 1, which condition it would be hard to violate. It is estimated that for a D = 3.16 m diameter satellite, with a pair of D = 1.0 m diameter telescopes (which value of D probably represents an upper limit on allowable aperture diameter since the telescope aperture must be much too small to even resolve the size of the satellite) at least N = 2.55 x 1016 separate pairs of (one integration time, pde count) measurement values must be collected to achieve just a 10 dB signal-to-noise ratio. Working with 10 pairs of telescopes (all with the same separation), and with 10 nearly adjacent and each very narrow spectral bands extracted from the light collected by each of the telescope-so that for each measurement integration time there would be 100 pairs of measurement values available-and with an integration time as short as Delta t = 1 ns, it would take T = 2.55 x 10(5) s or about 71 h to collect the data for just a single spatial frequency component of the image of the satellite. It is on this basis that it is concluded that the ICI concept does not seem likely to be able to provide a timely responsive capability for the imaging of geosynchronous satellites.
C1 [Riker, Jim] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Agrawal, Brij] Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
EM DLFried@cruzio.com
NR 9
TC 0
Z9 2
U1 1
U2 6
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1084-7529
EI 1520-8532
J9 J OPT SOC AM A
JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis.
PD JUL 1
PY 2014
VL 31
IS 7
BP 1536
EP 1546
DI 10.1364/JOSAA.31.001536
PG 11
WC Optics
SC Optics
GA AL1IG
UT WOS:000338878500022
PM 25121442
ER
PT J
AU Tondiglia, VP
Natarajan, LV
Bailey, CA
McConney, ME
Lee, KM
Bunning, TJ
Zola, R
Nemati, H
Yang, DK
White, TJ
AF Tondiglia, Vincent P.
Natarajan, Lalgudi V.
Bailey, Christopher A.
McConney, Michael E.
Lee, Kyung Min
Bunning, Timothy J.
Zola, Rafael
Nemati, Hossein
Yang, Deng-Ke
White, Timothy J.
TI Bandwidth broadening induced by ionic interactions in polymer stabilized
cholesteric liquid crystals
SO OPTICAL MATERIALS EXPRESS
LA English
DT Article
ID SWITCHABLE MIRRORS; GELS; PITCH; BAND
AB Cholesteric liquid crystals (CLCs) are selectively reflective materials that can exhibit a number of dynamic optical responses. We recently reported on electrically-induced, seven-fold increase in bandwidth in polymer stabilized CLCs (PSCLCs) subjected to DC electric fields. Here, the underlying mechanism of the electrically-controllable bandwidth broadening in PSCLCs is isolated by employing a variety of electro-optic experiments. We conclude that the mechanism is ionic charge trapping by the polymer network which subjects the material system to pitch expansion near the positive electrode and pitch compression near the negative electrode resulting in approximately linear pitch variation throughout the cell thickness. (C) 2014 Optical Society of America
C1 [Tondiglia, Vincent P.; Natarajan, Lalgudi V.; Bailey, Christopher A.; McConney, Michael E.; Lee, Kyung Min; Bunning, Timothy J.; White, Timothy J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Tondiglia, Vincent P.; Natarajan, Lalgudi V.; Bailey, Christopher A.] Leidos, Dayton, OH 45431 USA.
[Lee, Kyung Min] Azimuth Corp, Dayton, OH 45432 USA.
[Zola, Rafael; Nemati, Hossein; Yang, Deng-Ke] Kent State Univ, Kent, OH 44242 USA.
RP Tondiglia, VP (reprint author), Air Force Res Lab, Mat & Mfg Directorate, 3005 Hobson Way Ste 1, Wright Patterson AFB, OH 45433 USA.
EM Timothy.White.24@us.af.mil
RI McConney, Michael/A-1680-2011
FU Materials and Manufacturing Directorate of the Air Force Research
Laboratory; Air Force Office of Scientific Research
FX We gratefully acknowledge funding from the Materials and Manufacturing
Directorate of the Air Force Research Laboratory and the Air Force
Office of Scientific Research.
NR 22
TC 14
Z9 14
U1 1
U2 29
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 2159-3930
J9 OPT MATER EXPRESS
JI Opt. Mater. Express
PD JUL 1
PY 2014
VL 4
IS 7
BP 1465
EP 1472
DI 10.1364/OME.4.001465
PG 8
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA AL1GZ
UT WOS:000338875100021
ER
PT J
AU Acosta, RI
Gross, KC
Perram, GP
Johnson, SM
Dao, L
Medina, DF
Roybal, R
Black, P
AF Acosta, Roberto I.
Gross, Kevin C.
Perram, Glen P.
Johnson, Shane M.
Dao, Ly
Medina, David F.
Roybal, Robert
Black, Paul
TI Gas-Phase Plume from Laser-Irradiated Fiberglass-Reinforced Polymers via
Imaging Fourier Transform Spectroscopy
SO APPLIED SPECTROSCOPY
LA English
DT Article
DE imaging Fourier transform infrared spectroscopy; IFTS; fiberglass
composite; laser heating; plume dynamics
ID HIGH-TEMPERATURE; PRODUCTS; COMBUSTION; POLYESTERS; TOXICITY; DATABASE;
PLASTICS; CO2
AB Emissive plumes from laser-irradiated fiberglass-reinforced polymers (FRP) were investigated using a mid-infrared imaging Fourier transform spectrometer, operating at fast framing rates (50 kHz imagery and 2.5 Hz hyperspectral imagery) with adequate spatial (0.81 mm(2) per pixel) and spectral resolution (2 cm(-1)). Fiberglass-reinforced polymer targets were irradiated with a 1064 nm continuous wave neodymium-doped yttrium aluminum garnet (Nd:YAG) laser for 60 s at 100 W in air. Strong emissions from H2O, CO, CO2, and hydrocarbons were observed between 1800 and 5000 cm(-1). A single-layer radiative transfer model was developed for the spectral region from 2000 to 2400 cm(-1) to estimate spatial maps of temperature and column densities of CO and CO2 from the hyperspectral imagery. The spectral model was used to compute the absorption cross sections of CO and CO2 using spectral line parameters from the high-temperature extension of the HITRAN. The analysis of pre-combustion spectra yields effective temperatures rising from ambient to 1200 K and suddenly increasing to 1515 K upon combustion. The peak signal-to-noise ratio for a single spectrum exceeds 60:1, enabling temperature and column density determinations with low statistical error. For example, the spectral analysis for a single pixel within a single frame yields an effective temperature of 1019 +/- 6 K, and CO and CO2 column densities of 1.14 +/- 0.05 and 1.11 +/- 0.03 x 10(18) molec/cm(2), respectively. Systematic errors associated with the radiative transfer model dominate, yielding effective temperatures with uncertainties of >100 K and column densities to within a factor of 2-3. Hydrocarbon emission at 2800 to 3200 cm(-1) is well correlated with CO column density.
C1 [Acosta, Roberto I.; Gross, Kevin C.; Perram, Glen P.] Air Force Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
[Johnson, Shane M.; Dao, Ly; Medina, David F.; Roybal, Robert] AFRL RDLE, Air Force Res Lab, Directed Energy Directorate, Laser Effects Res Branch, Kirtland AFB, NM 87117 USA.
[Black, Paul] Boeing LTS, Albuquerque, NM 87185 USA.
RP Perram, GP (reprint author), Air Force Inst Technol, Dept Engn Phys, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM glen.perram@afit.edu
FU High Energy Laser Joint Technology Office (HEL-JTO) [AFOSR-BAA-2010-2]
FX The authors would like to acknowledge the High Energy Laser Joint
Technology Office (HEL-JTO) for funding: HEL JTO MRI (AFOSR-BAA-2010-2).
NR 47
TC 4
Z9 4
U1 0
U2 10
PU SOC APPLIED SPECTROSCOPY
PI FREDERICK
PA 5320 SPECTRUM DRIVE SUITE C, FREDERICK, MD 21703 USA
SN 0003-7028
EI 1943-3530
J9 APPL SPECTROSC
JI Appl. Spectrosc.
PD JUL
PY 2014
VL 68
IS 7
BP 723
EP 732
DI 10.1366/13-07213
PG 10
WC Instruments & Instrumentation; Spectroscopy
SC Instruments & Instrumentation; Spectroscopy
GA AL0NJ
UT WOS:000338823300003
PM 25014838
ER
PT J
AU Harwood, JF
Farooq, M
Richardson, AG
Doud, CW
Putnam, JL
Szumlas, DE
Richardson, JH
AF Harwood, James F.
Farooq, Muhammad
Richardson, Alec G.
Doud, Carl W.
Putnam, John L.
Szumlas, Daniel E.
Richardson, Jason H.
TI Exploring New Thermal Fog and Ultra-Low Volume Technologies to Improve
Indoor Control of the Dengue Vector, Aedes aegypti (Diptera: Culicidae)
SO JOURNAL OF MEDICAL ENTOMOLOGY
LA English
DT Article
DE Aedes aegypti; ultra-low volume; thermal fog; indoor space spray;
pyriproxyfen
ID EMERGENCY CONTROL; ADULTICIDE EFFICACY; PYRIPROXYFEN; FORMULATION;
INSECTICIDE; THAILAND; LARVAE
AB Control of the mosquito vector, Aedes aegypti (L.), inside human habitations must be performed quickly and efficiently to reduce the risk of transmission during dengue outbreaks. As part of a broad study to assess the efficacy of dengue vector control tools for the U.S. Military, two pesticide delivery systems (ultra-low volume [ULV] and thermal fog) were evaluated for their ability to provide immediate control of Ae. aegypti mosquitoes with a contact insecticide inside simulated urban structures. An insect growth regulator was also applied to determine how well each sprayer delivered lethal doses of active ingredient to indoor water containers for pupal control. Mortality of caged Ae. aegypti, pesticide droplet size, and droplet deposition were recorded after applications. In addition, larval and pupal mortality was measured from treated water samples for 4 wk after the applications. The ULV and the thermal fogger performed equally well in delivering lethal doses of adulticide throughout the structures. The ULV resulted in greater larval mortality and adult emergence inhibition in the water containers for a longer period than the thermal fogger. Therefore, the ULV technology is expected to be a better tool for sustained vector suppression when combined with an effective insect growth regulator. However, during a dengue outbreak, either delivery system should provide an immediate knockdown of vector populations that may lower the risk of infection and allow other suppression strategies to be implemented.
C1 [Harwood, James F.; Farooq, Muhammad; Richardson, Alec G.; Doud, Carl W.] Navy Entomol Ctr Excellence, Naval Air Stn, Jacksonville, FL 32212 USA.
[Putnam, John L.] US Air Force Acad, HQ USAFA DFB, Dept Biol, Colorado Springs, CO 80840 USA.
[Szumlas, Daniel E.] Walter Reed Army Inst Res, Entomol Branch 503, Silver Spring, MD 20910 USA.
[Richardson, Jason H.] Armed Forces Pest Management Board, Silver Spring, MD 20910 USA.
RP Harwood, JF (reprint author), Navy Entomol Ctr Excellence, Naval Air Stn, Box 43,Bldg 937, Jacksonville, FL 32212 USA.
EM james.harwood@med.navy.mil
FU Deployed War Fighter Protection Program; Defense Medical Research and
Development Program
FX We thank J. Kerce, C. Waits, V. Smith, J. Anderson, M. McDonough, J.
Wright, M. Denson, R. Platt, L. Santana, J. Francona, and R. Oakes for
technical assistance during field and laboratory trials. Also, we thank
P. J. Obenauer, P. Nunn, and H. Arimoto for editorial assistance. This
research was funded by the Deployed War Fighter Protection Program and
the Defense Medical Research and Development Program.
NR 29
TC 4
Z9 5
U1 3
U2 13
PU ENTOMOLOGICAL SOC AMER
PI ANNAPOLIS
PA 3 PARK PLACE, STE 307, ANNAPOLIS, MD 21401-3722 USA
SN 0022-2585
EI 1938-2928
J9 J MED ENTOMOL
JI J. Med. Entomol.
PD JUL
PY 2014
VL 51
IS 4
BP 845
EP 854
DI 10.1603/ME14056
PG 10
WC Entomology; Veterinary Sciences
SC Entomology; Veterinary Sciences
GA AL0TW
UT WOS:000338840700016
PM 25118418
ER
PT J
AU Barnes, M
Garcia, D
AF Barnes, Matthew
Garcia, David
TI An Abnormal Chest Radiograph
SO AMERICAN FAMILY PHYSICIAN
LA English
DT Editorial Material
C1 [Barnes, Matthew] USAF, Lackland AFB, TX USA.
[Garcia, David] USAF, Ft Belvoir Family Med Residency, Ft Belvoir, VA 22060 USA.
RP Garcia, D (reprint author), USAF, Ft Belvoir Family Med Residency, Ft Belvoir, VA 22060 USA.
EM david.s.garcia.mil@health.mil
NR 7
TC 0
Z9 0
U1 0
U2 0
PU AMER ACAD FAMILY PHYSICIANS
PI KANSAS CITY
PA 8880 WARD PARKWAY, KANSAS CITY, MO 64114-2797 USA
SN 0002-838X
EI 1532-0650
J9 AM FAM PHYSICIAN
JI Am. Fam. Physician
PD JUL 1
PY 2014
VL 90
IS 1
BP 47
EP 48
PG 2
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA AK2TY
UT WOS:000338273600011
PM 25077502
ER
PT J
AU Hartman, GC
Fitch, R
Zhuang, Y
AF Hartman, Gregory C.
Fitch, Robert
Zhuang, Yan
TI Nonreciprocal Magnetostatic Wave Propagation in Micro-Patterned NiFe
Thin Films
SO IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
LA English
DT Article
DE Ferromagnetic resonance; NiFe; nonreciprocal; patterning; radio
frequency
ID SPIN-WAVES
AB Nonreciprocal magnetostatic wave propagation in micro-patterned Ni80Fe20 thin film has been investigated. The nonreciprocal devices consist of a set of coupled microstrip transmission lines acting as antennae on the top of the micro-patterned Ni80Fe20 films. The Ni80Fe20 films were structured into an array of rectangular prisms. Nonreciprocal wave propagation was observed in the patterned Ni80Fe20 film. Compared to the control device with a continuous Ni80Fe20 film, the micro-patterned films led to a weaker non-reciprocity.
C1 [Hartman, Gregory C.; Zhuang, Yan] Wright State Univ, Dept Elect Engn, Dayton, OH 45435 USA.
[Hartman, Gregory C.; Fitch, Robert] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Hartman, GC (reprint author), Wright State Univ, Dept Elect Engn, Dayton, OH 45435 USA.
EM yan.zhuang@wright.edu
NR 19
TC 2
Z9 2
U1 0
U2 7
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1531-1309
EI 1558-1764
J9 IEEE MICROW WIREL CO
JI IEEE Microw. Wirel. Compon. Lett.
PD JUL
PY 2014
VL 24
IS 7
BP 484
EP 486
DI 10.1109/LMWC.2014.2316260
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA AK3WE
UT WOS:000338355000018
ER
PT J
AU Wang, JL
Tang, J
Lei, ZW
Liu, M
Knize, RJ
Lu, YL
AF Wang, Jianlin
Tang, Jian
Lei, Zhiwei
Liu, Min
Knize, Randy J.
Lu, Yalin
TI Pyrochlore-Free Ferroelectric 0.64Pb(Ni1/3Nb2/3)O-3-0.36PbTiO(3)
Ceramics Synthesized by the Combustion Method
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID MORPHOTROPIC PHASE-BOUNDARY; NICKEL-NIOBATE CERAMICS; LEAD MAGNESIUM
NIOBATE; DIELECTRIC-PROPERTIES; PB(NI1/3NB2/3)O-3-PBTIO3; SYSTEM; EDTA;
ROUTE
AB By adopting Nb2O5, HNO3 and coordination agents EDTA as raw materials, pyrochlore-free 0.64Pb(Ni1/3Nb2/3)O(3-)0.36PbTiO(3)(0.64PNN-0.36PT) powders were successfully synthesized via a combustion route. Free of pyrochlore phase was realized by the chelation formation of EDTA-metal ions which isolate niobium and lead oxides and then prevent the formation of pyrochlore phases, therein generate the desired perovskite phases. Comparing the results with similar samples synthesized by the Columbite method, the new 0.64PNN-0.36PT ceramics here shown much better dielectric and ferroelectric performances: a maximum dielectric constant of 22 856 at 1 kHz and a remnant polarization of 21.6 mu C/cm(2) at 40 kV/cm.
C1 [Wang, Jianlin; Tang, Jian; Lei, Zhiwei; Liu, Min; Lu, Yalin] Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China.
[Lu, Yalin] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China.
[Knize, Randy J.; Lu, Yalin] US Air Force Acad, Laser & Opt Res Ctr, Dept Phys, Colorado Springs, CO 80840 USA.
RP Liu, M (reprint author), Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China.
EM liumin1106@ustc.edu.cn; yllu@ustc.edu.cn
FU National Basic Research Program of China (973 Program) [2012CB922000];
Natural Science Foundation of China [51102224]; Fundamental Research
Fund for the Central Universities [WK 2060140014]; AFOSR; DTRA
[HDTRA12221]
FX This work was supported by the National Basic Research Program of China
(973 Program, 2012CB922000), the Natural Science Foundation of China
(51102224), and the Fundamental Research Fund for the Central
Universities (WK 2060140014). Dr Lu appreciates the support from AFOSR
and DTRA (HDTRA12221).
NR 25
TC 0
Z9 0
U1 2
U2 11
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-7820
EI 1551-2916
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD JUL
PY 2014
VL 97
IS 7
BP 2130
EP 2134
DI 10.1111/jace.12934
PG 5
WC Materials Science, Ceramics
SC Materials Science
GA AK0SX
UT WOS:000338126800022
ER
PT J
AU Sturrock, PA
Fischbach, E
Javorsek, D
Jenkins, JH
Lee, RH
Nistor, J
Scargle, JD
AF Sturrock, P. A.
Fischbach, E.
Javorsek, D., II
Jenkins, J. H.
Lee, R. H.
Nistor, J.
Scargle, J. D.
TI Comparative study of beta-decay data for eight nuclides measured at the
Physikalisch-Technische Bundesanstalt
SO ASTROPARTICLE PHYSICS
LA English
DT Article
DE Sun; Neutrinos; Nuclear decays
ID R-MODE OSCILLATIONS; SOLAR; ROTATION; RATES
AB We present the results of time-series analyses of data, kindly provided by the Physikalisch-Technische Bundesanstalt, concerning the beta-decays of Ag108, Ba133, Cs137, Eu152, Eu154, Kr85, Ra226, and Sr90. From measurements of the detector currents, we find evidence of annual oscillations (especially for Ra226), and for several solar r-mode oscillations. It is notable that the frequencies of these r-mode oscillations correspond to exactly the same sidereal rotation rate (12.08 year(-1)) that we have previously identified in r-mode oscillations detected in both Mt Wilson solar diameter data and Lomonosov Moscow State University Sr90 beta-decay data. Ba133 is found to be anomalous in that current measurements for this nuclide have a much larger variation (by 4 sigma) than those of the other nuclides. It is interesting that analysis of variability measurements in the PTB files yields strong evidence for an oscillation for Ba133 but only weak evidence for Ra226. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Sturrock, P. A.] Stanford Univ, Ctr Space Sci & Astrophys, Stanford, CA 94305 USA.
[Fischbach, E.; Nistor, J.] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA.
[Jenkins, J. H.] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA.
[Lee, R. H.] US Air Force Acad, Dept Phys, Colorado Springs, CO 80920 USA.
[Scargle, J. D.] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA.
RP Sturrock, PA (reprint author), Stanford Univ, Ctr Space Sci & Astrophys, Stanford, CA 94305 USA.
EM sturrock@stanford.edu
OI Javorsek, Daniel/0000-0002-0329-4011
NR 18
TC 9
Z9 9
U1 3
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0927-6505
EI 1873-2852
J9 ASTROPART PHYS
JI Astropart Phys.
PD JUL-AUG
PY 2014
VL 59
BP 47
EP 58
DI 10.1016/j.astropartphys.2014.04.006
PG 12
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA AJ7MT
UT WOS:000337881500007
ER
PT J
AU Mason, JP
Woods, TN
Caspi, A
Thompson, BJ
Hock, RA
AF Mason, James Paul
Woods, T. N.
Caspi, A.
Thompson, B. J.
Hock, R. A.
TI MECHANISMS AND OBSERVATIONS OF CORONAL DIMMING FOR THE 2010 AUGUST 7
EVENT
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE methods: data analysis; Sun: activity; Sun: corona; Sun: coronal mass
ejections (CMEs); Sun: flares; Sun: UV radiation
ID SOHO EIT OBSERVATIONS; MASS EJECTION ONSET; SOLAR-FLARE; YOHKOH SXT;
CMES; PROMINENCES; WAVES
AB Coronal dimming of extreme ultraviolet (EUV) emission has the potential to be a useful forecaster of coronal mass ejections (CMEs). As emitting material leaves the corona, a temporary void is left behind which can be observed in spectral images and irradiance measurements. The velocity and mass of the CMEs should impact the character of those observations. However, other physical processes can confuse the observations. We describe these processes and the expected observational signature, with special emphasis placed on the differences. We then apply this understanding to a coronal dimming event with an associated CME that occurred on 2010 August 7. Data from the Solar Dynamics Observatory's Atmospheric Imaging Assembly and EUV Variability Experiment (EVE) are used for observations of the dimming, while the Solar and Heliospheric Observatory's Large Angle and Spectrometric Coronagraph and the Solar Terrestrial Relations Observatory's COR1 and COR2 are used to obtain velocity and mass estimates for the associated CME. We develop a technique for mitigating temperature effects in coronal dimming from full-disk irradiance measurements taken by EVE. We find that for this event, nearly 100% of the dimming is due to mass loss in the corona.
C1 [Mason, James Paul; Woods, T. N.; Caspi, A.] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80303 USA.
[Thompson, B. J.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Hock, R. A.] US Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM USA.
RP Mason, JP (reprint author), Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80303 USA.
EM james.mason@lasp.colorado.edu
RI Thompson, Barbara/C-9429-2012;
OI Caspi, Amir/0000-0001-8702-8273
FU NASA SDO project, NASA [NAS5-02140]
FX The authors would like to thank Angelos Vourlidas for providing
computations of mass and true velocity for the event discussed in this
paper. Additionally, the CDAW CME catalog is generated and maintained at
the CDAW Data Center by NASA and The Catholic University of America in
cooperation with the Naval Research Laboratory. SOHO is a project of
international cooperation between ESA and NASA. This research is
supported by the NASA SDO project, NASA grant NAS5-02140.
NR 43
TC 7
Z9 7
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD JUL 1
PY 2014
VL 789
IS 1
AR 61
DI 10.1088/0004-637X/789/1/61
PG 9
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AK0LD
UT WOS:000338103400061
ER
PT J
AU Ramesh, K
Gopalarathnam, A
Granlund, K
Ol, MV
Edwards, JR
AF Ramesh, Kiran
Gopalarathnam, Ashok
Granlund, Kenneth
Ol, Michael V.
Edwards, Jack R.
TI Discrete-vortex method with novel shedding criterion for unsteady
aerofoil flows with intermittent leading-edge vortex shedding
SO JOURNAL OF FLUID MECHANICS
LA English
DT Article
DE computational methods; separated flows; vortex interactions
ID LOW-REYNOLDS-NUMBER; INDUCED CONTAMINANT TRANSPORT; STEADY SEPARATED
FLOW; LARGE-EDDY SIMULATION; DYNAMIC STALL; PITCHING AIRFOIL;
NUMERICAL-SIMULATION; AERODYNAMIC MODEL; INVISCID MODEL; FLAPPING WINGS
AB Unsteady aerofoil flows are often characterized by leading-edge vortex (LEV) shedding. While experiments and high-order computations have contributed to our understanding of these flows, fast low-order methods are needed for engineering tasks. Classical unsteady aerofoil theories are limited to small amplitudes and attached leading-edge flows. Discrete-vortex methods that model vortex shedding from leading edges assume continuous shedding, valid only for sharp leading edges, or shedding governed by ad-hoc criteria such as a critical angle of attack, valid only for a restricted set of kinematics. We present a criterion for intermittent vortex shedding from rounded leading edges that is governed by a maximum allowable leading-edge suction. We show that, when using unsteady thin aerofoil theory, this leading-edge suction parameter (LESP) is related to the A(0) term in the Fourier series representing the chordwise variation of bound vorticity. Furthermore, for any aerofoil and Reynolds number, there is a critical value of the LESP, which is independent of the motion kinematics. When the instantaneous LESP value exceeds the critical value, vortex shedding occurs at the leading edge. We have augmented a discrete-time, arbitrary-motion, unsteady thin aerofoil theory with discrete-vortex shedding from the leading edge governed by the instantaneous LESP. Thus, the use of a single empirical parameter, the critical-LESP value, allows us to determine the onset, growth, and termination of LEVs. We show, by comparison with experimental and computational results for several aerofoils, motions and Reynolds numbers, that this computationally inexpensive method is successful in predicting the complex flows and forces resulting from intermittent LEV shedding, thus validating the LESP concept.
C1 [Ramesh, Kiran; Gopalarathnam, Ashok; Edwards, Jack R.] N Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA.
[Granlund, Kenneth; Ol, Michael V.] US Air Force, Res Lab, Air Vehicles Directorate, AFRL RBAL, Wright Patterson AFB, OH 45433 USA.
RP Ramesh, K (reprint author), N Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA.
EM kramesh2@ncsu.edu
RI Ramesh, Kiran/D-2649-2014
OI Ramesh, Kiran/0000-0001-5555-1860
FU US Air Force Office of Scientific Research [FA 9550-10-1-0120]
FX The authors wish to gratefully acknowledge the support of the US Air
Force Office of Scientific Research through grant FA 9550-10-1-0120 and
program manager Dr Douglas Smith. We thank Professor Eldredge of UCLA
for sharing results from the couplevpm analysis, used in case study 5.
We thank Professor Dumas for use of the flow plots from Kinsey & Dumas
(2008) in our figures 19 and 21. This article is a revised version of
AIAA Paper 2012-3027.
NR 75
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Z9 12
U1 1
U2 20
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0022-1120
EI 1469-7645
J9 J FLUID MECH
JI J. Fluid Mech.
PD JUL
PY 2014
VL 751
BP 500
EP 538
DI 10.1017/jfm.2014.297
PG 39
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA AJ8AR
UT WOS:000337925000022
ER
PT J
AU Bialy, BJ
Andrews, L
Curtis, JW
Dixon, WE
AF Bialy, B. J.
Andrews, L.
Curtis, J. Willard
Dixon, W. E.
TI Saturated Tracking Control of Store-Induced Limit Cycle Oscillations
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article
ID ROBOT MANIPULATORS; FIGHTER AIRCRAFT; WING SECTION; SYSTEMS; MODEL;
STABILITY
C1 [Bialy, B. J.; Andrews, L.; Dixon, W. E.] Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL 32611 USA.
[Curtis, J. Willard] US Air Force Res Lab, Munit Directorate, Eglin AFB, FL 32542 USA.
RP Bialy, BJ (reprint author), Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL 32611 USA.
EM bialybj@ufl.edu; landr010@ufl.edu; jess.curtis@eglin.af.mil;
wdixon@ufl.edu
RI Dixon, Warren/F-5238-2015
OI Dixon, Warren/0000-0002-5091-181X
FU SMART fellowship; U.S. Air Force Research Laboratory Mathematical
Modeling and Optimization Institute at Eglin Air Force Base
FX This research is supported by a SMART fellowship and a contract with
U.S. Air Force Research Laboratory Mathematical Modeling and
Optimization Institute at Eglin Air Force Base. Any opinions, findings,
and conclusions or recommendations expressed in this material are those
of the authors and do not necessarily reflect the views of the
sponsoring agency.
NR 22
TC 2
Z9 2
U1 0
U2 2
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
EI 1533-3884
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD JUL-AUG
PY 2014
VL 37
IS 4
BP 1316
EP 1322
DI 10.2514/1.G000325
PG 7
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA AJ9GS
UT WOS:000338016500025
ER
PT J
AU Sinclair, AJ
Sherrill, RE
Lovell, TA
AF Sinclair, Andrew J.
Sherrill, Ryan E.
Lovell, T. Alan
TI Calibration of Linearized Solutions for Satellite Relative Motion
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article
ID ELLIPTIC ORBITS; CIRCULAR ORBIT; NONLINEARITY; DYNAMICS
C1 [Sinclair, Andrew J.; Sherrill, Ryan E.] Auburn Univ, Dept Aerosp Engn, Auburn, AL 36849 USA.
[Lovell, T. Alan] US Air Force, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Sinclair, AJ (reprint author), Auburn Univ, Dept Aerosp Engn, Auburn, AL 36849 USA.
RI Sinclair, Andrew/H-2156-2013
FU American Society for Engineering Education's Summer Faculty Fellowship
Program; Air Force Research Laboratory's Space Scholars Program
FX The authors thank the American Society for Engineering Education's
Summer Faculty Fellowship Program and the Air Force Research
Laboratory's Space Scholars Program; a portion of the research for this
Note was performed under the auspices of these programs.
NR 14
TC 4
Z9 4
U1 0
U2 6
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
EI 1533-3884
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD JUL-AUG
PY 2014
VL 37
IS 4
BP 1362
EP +
DI 10.2514/1.G000037
PG 6
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA AJ9GS
UT WOS:000338016500032
ER
PT J
AU Ruark, CD
Hack, CE
Robinson, PJ
Mahle, DA
Gearhart, JM
AF Ruark, Christopher D.
Hack, C. Eric
Robinson, Peter J.
Mahle, Deirdre A.
Gearhart, Jeffery M.
TI Predicting Passive and Active Tissue:Plasma Partition Coefficients:
Interindividual and Interspecies Variability
SO JOURNAL OF PHARMACEUTICAL SCIENCES
LA English
DT Article
DE tissue partition; physicochemical properties; population
pharmacokinetic; pharmacodynamic models; drug transport; active
transport; QSPR; Monte Carlo; in silico modeling; computational ADME;
computational biology
ID ORGANIC-CHEMICALS; PHARMACOKINETIC MODELS; P-GLYCOPROTEIN;
SPECIES-DIFFERENCES; INPUT PARAMETERS; IN-VIVO; ALGORITHM; TISSUES;
DRUGS; DISPOSITION
AB A mechanistic tissue composition model incorporating passive and active transport for the prediction of steady-state tissue:plasma partition coefficients (Kt:pl) of chemicals in multiple mammalian species was used to assess interindividual and interspecies variability. This approach predicts Kt:pl using chemical lipophilicity, pKa, phospholipid membrane binding, and the unbound plasma fraction, together with tissue fractions of water, neutral lipids, neutral and acidic phospholipids, proteins, and pH. Active transport Kt:pl is predicted using Michaelis-Menten transport parameters. Species-specific biological properties were identified from 126 peer reviewed journal articles, listed in the Supporting Information, for mouse, rat, guinea pig, rabbit, beagle dog, pig, monkey, and human species. Means and coefficients of variation for biological properties were used in a Monte Carlo analysis to assess variability. The results show Kt:pl interspecies variability for the brain, fat, heart, kidney, liver, lung, muscle, red blood cell, skin, and spleen, but uncertainty in the estimates obscured some differences. Compounds undergoing active transport are shown to have concentration-dependent Kt:pl. This tissue composition-based mechanistic model can be used to predict Kt:pl for organic chemicals across eight species and 10 tissues, and can be an important component in drug development when scaling Kt:pl from animal models to humans. (c) 2014 Wiley Periodicals, Inc. and the American Pharmacists Association J Pharm Sci 103:2189-2198, 2014
C1 [Ruark, Christopher D.; Hack, C. Eric; Robinson, Peter J.; Gearhart, Jeffery M.] Air Force Res Lab, HJF, Mol Bioeffects Branch, Bioeffects Div,Human Effectiveness Directorate, Dayton, OH 45433 USA.
[Ruark, Christopher D.; Gearhart, Jeffery M.] Wright State Univ, Dept Biomed Sci, Dayton, OH 45435 USA.
[Mahle, Deirdre A.] USAF, Mol Bioeffects Branch, Bioeffects Div, Human Effectiveness Directorate,Air Force Res Lab, Dayton, OH 45433 USA.
RP Gearhart, JM (reprint author), Air Force Res Lab, HJF, Mol Bioeffects Branch, Bioeffects Div,Human Effectiveness Directorate, Dayton, OH 45433 USA.
EM jeffery.gearhart.ctr@us.af.mil
OI Ruark, Christopher/0000-0003-1032-5696
FU Defense Threat Reduction Agency - Joint Science and Technology Office,
Basic and Supporting Sciences Division
FX This project received support from the Defense Threat Reduction Agency -
Joint Science and Technology Office, Basic and Supporting Sciences
Division. The authors would like to thank Ms. Tammie Covington for
careful review of the manuscript.
NR 28
TC 5
Z9 5
U1 2
U2 27
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0022-3549
EI 1520-6017
J9 J PHARM SCI-US
JI J. Pharm. Sci.
PD JUL
PY 2014
VL 103
IS 7
BP 2189
EP 2198
DI 10.1002/jps.24011
PG 10
WC Chemistry, Medicinal; Chemistry, Multidisciplinary; Pharmacology &
Pharmacy
SC Pharmacology & Pharmacy; Chemistry
GA AJ9IX
UT WOS:000338023700030
PM 24832575
ER
PT J
AU Beck, JA
Brown, JM
Cross, CJ
Slater, JC
AF Beck, Joseph A.
Brown, Jeffrey M.
Cross, Charles J.
Slater, Joseph C.
TI Component-Mode Reduced-Order Models for Geometric Mistuning of
Integrally Bladed Rotors
SO AIAA JOURNAL
LA English
DT Article
ID DYNAMIC-ANALYSIS; DISKS; VIBRATION
AB Two methods that explicitly model airfoil geometry surface deviations for mistuning prediction in integrally bladed rotors are developed by performing a modal analysis on different degrees of freedom of a parent reduced-order model. The parent reduced-order model is formulated with Craig-Bampton component-mode synthesis in cyclic symmetry coordinates for an integrally bladed rotor with a tuned disk and airfoil geometric deviations. The first method performs an eigenanalysis on the constraint-mode degrees of freedom that provides a truncated set of interface modes, whereas the second method includes the disk fixed-interface normal mode in the eigenanalysis to yield a truncated set of ancillary modes. Both methods can use tuned or mistuned modes, where the tuned modes have the computational benefit of being computed in cyclic symmetry coordinates. Furthermore, the tuned modes only need to be calculated once, which offers significant computational savings for subsequent mistuning studies. Each geometric mistuning method relies upon the use of geometrically mistuned airfoil modes in the component-mode framework to provide a very accurate reduced-order model. Free and forced response results are compared to both the full finite-element model solutions and a traditional frequency-based approach used widely in academia and the gas-turbine industry. It is shown that the developed methods provide highly accurate results with a significant reduction in solution time compared to the full finite-element model and parent reduced-order model.
C1 [Beck, Joseph A.; Brown, Jeffrey M.; Cross, Charles J.] US Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
[Slater, Joseph C.] Wright State Univ, Dept Mech & Mat Engn, Dayton, OH 45435 USA.
RP Beck, JA (reprint author), US Air Force Res Lab, Aerosp Syst Directorate, 1950 5th St, Wright Patterson AFB, OH 45433 USA.
OI Slater, Joseph/0000-0002-1923-9279
NR 33
TC 5
Z9 5
U1 0
U2 12
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
EI 1533-385X
J9 AIAA J
JI AIAA J.
PD JUL
PY 2014
VL 52
IS 7
BP 1345
EP 1356
DI 10.2514/1.J052420
PG 12
WC Engineering, Aerospace
SC Engineering
GA AJ5SK
UT WOS:000337747800001
ER
PT J
AU Porter, C
Fagley, C
Farnsworth, J
Seidel, J
McLaughlin, T
AF Porter, Chris
Fagley, Casey
Farnsworth, John
Seidel, Juergen
McLaughlin, Thomas
TI Closed-Loop Flow Control of a Forebody at a High Incidence Angle
SO AIAA JOURNAL
LA English
DT Article
ID SIDE FORCE CONTROL; VORTICES; CYLINDER; SUPPRESSION; ACTUATORS;
ASYMMETRY; VORTEX; ATTACK
AB The flowfield around an axisymmetric forebody at a high angle of attack (40 < alpha < 60 deg) produces a significant side force. This side force results from an asymmetric pressure distribution around the body due to an asymmetric vortex configuration. Numerical studies of open-loop control using mass blowing slots near the tip of the model have shown a proportional response of the side force over a range of momentum coefficient amplitudes. From the open-loop simulations, a prediction-error minimization method was employed to formulate a linear time-invariant model, which captured the dynamics of the side force response to different mass flow rates applied to either the port or starboard actuator. Based on the linear time-invariant model, a proportional-integral control law was developed for set-point tracking a prescribed side force. The development of the linear time-invariant model, and corresponding linear time-invariant feedback solution are presented to illustrate the model's capabilities and limitations. The ability to track a set-point signal based on the linear time-invariant model and corresponding proportional-integral control law are shown. The results indicate that the bandwidth of the controller is limited to frequencies below the convective frequency due to the convective time delay. Finally, the linear time-invariant feedback solutions are compared to Navier-Stokes feedback simulations, which show very good agreement.
C1 [Porter, Chris; Fagley, Casey; Farnsworth, John; Seidel, Juergen] US Air Force Acad, Dept Aeronaut, Colorado Springs, CO 80840 USA.
[McLaughlin, Thomas] US Air Force Acad, Dept Aeronaut, Aeronaut Res Ctr, Colorado Springs, CO 80840 USA.
RP Porter, C (reprint author), US Air Force Acad, Dept Aeronaut, Colorado Springs, CO 80840 USA.
NR 35
TC 2
Z9 2
U1 0
U2 8
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
EI 1533-385X
J9 AIAA J
JI AIAA J.
PD JUL
PY 2014
VL 52
IS 7
BP 1430
EP 1440
DI 10.2514/1.J052563
PG 11
WC Engineering, Aerospace
SC Engineering
GA AJ5SK
UT WOS:000337747800008
ER
PT J
AU Kulatilaka, WD
Gord, JR
Roy, S
AF Kulatilaka, Waruna D.
Gord, James R.
Roy, Sukesh
TI Femtosecond two-photon LIF imaging of atomic species using a
frequency-quadrupled Ti:sapphire laser
SO APPLIED PHYSICS B-LASERS AND OPTICS
LA English
DT Article
ID TI-SAPPHIRE LASER; PICOSECOND EXCITATION; INDUCED FLUORESCENCE;
INTERFERENCE-FREE; HYDROGEN; GENERATION; PULSES; FLAMES; NM; NANOSECOND
AB Femtosecond (fs)-duration laser pulses are well suited for two-photon laser-induced-fluorescence (TPLIF) imaging of key atomic species such as H, N, and O in gas-phase reacting flows. Ultrashort pulses enable efficient nonlinear excitation, while reducing interfering photochemical processes. Furthermore, amplified fs lasers enable high-repetition-rate imaging (typically 1-10 kHz) for capturing the dynamics of turbulent flow fields. However, two-dimensional (2D), single-laser-shot fs-TPLIF imaging of the above species is challenging in most practical flow fields because of the limited ultraviolet pulse energy available in commercial optical parametric amplifier (OPA)-based tunable laser sources. In this work, we report the development of an efficient, fs frequency-quadrupling unit [i.e., fourth-harmonic generator (FHG)] with overall conversion efficiency more than six times greater than that of commercial OPA-based systems. The development, characterization, and application of the fs-FHG system for 2D imaging of H atoms in flames are described in detail. The potential application of the same laser system for 2D imaging of N and O atoms is also discussed.
C1 [Kulatilaka, Waruna D.; Roy, Sukesh] Spectral Energies LLC, Dayton, OH 45431 USA.
[Gord, James R.] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
RP Kulatilaka, WD (reprint author), Spectral Energies LLC, 5100 Springfield St,Suite 301, Dayton, OH 45431 USA.
EM waruna.kulatilaka.1.ctr@us.af.mil
FU United States Air Force Research Laboratory [FA8650-12-C-2200]; United
States Air Force Office of Scientific Research
FX Funding for this research was provided by the United States Air Force
Research Laboratory under Contract No. FA8650-12-C-2200 and by the
United States Air Force Office of Scientific Research (Dr. Enrique
Parra, Program Manager).
NR 19
TC 11
Z9 11
U1 5
U2 41
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0946-2171
EI 1432-0649
J9 APPL PHYS B-LASERS O
JI Appl. Phys. B-Lasers Opt.
PD JUL
PY 2014
VL 116
IS 1
BP 7
EP 13
DI 10.1007/s00340-014-5845-7
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA AJ2OX
UT WOS:000337498500002
ER
PT J
AU Ash, JN
Ertin, E
Potter, LC
Zelnio, EG
AF Ash, Joshua N.
Ertin, Emre
Potter, Lee C.
Zelnio, Edmund G.
TI Wide-Angle Synthetic Aperture Radar Imaging [Models and algorithms for
anisotropic scattering]
SO IEEE SIGNAL PROCESSING MAGAZINE
LA English
DT Article
ID SPARSE REPRESENTATION; SPECTRAL ESTIMATION; SAR; FORMULATION; VEHICLES;
BAND
C1 [Ertin, Emre; Potter, Lee C.] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA.
[Ertin, Emre] Battelle Mem Inst, Core Technol Grp, Columbus, OH 43201 USA.
[Potter, Lee C.] Ohio State Univ, Davis Heart & Lung Res Inst, Columbus, OH 43210 USA.
[Zelnio, Edmund G.] AFRL, Wright Patterson AFB, OH USA.
[Zelnio, Edmund G.] AFRL, Automat Target Recognit Div, Sensors Directorate, Wright Patterson AFB, OH USA.
RP Ash, JN (reprint author), Ohio State Univ, Inst Sensing Syst, Columbus, OH 43210 USA.
EM ash.48@osu.edu; ertin.1@osu.edu; potter.36@osu.edu;
edmund.zelnio@us.af.mil
RI Potter, Lee/F-8668-2014; Magazine, Signal Processing/E-9947-2015
OI Potter, Lee/0000-0002-1537-1627;
FU Defense Advanced Research Projects Agency [N66001-10-1-4090]; Army
Research Office [W911NF-11-1-0391]; Air Force Research Laboratory
[FA8650-07-D-1220]
FX This work was supported in part by the Defense Advanced Research
Projects Agency under grant N66001-10-1-4090, by the Army Research
Office under grant W911NF-11-1-0391, and by the Air Force Research
Laboratory under award FA8650-07-D-1220.
NR 30
TC 5
Z9 7
U1 0
U2 9
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1053-5888
EI 1558-0792
J9 IEEE SIGNAL PROC MAG
JI IEEE Signal Process. Mag.
PD JUL
PY 2014
VL 31
IS 4
BP 16
EP 26
DI 10.1109/MSP.2014.2311828
PG 11
WC Engineering, Electrical & Electronic
SC Engineering
GA AJ6XP
UT WOS:000337840100006
ER
PT J
AU Whalley, MS
Takahashi, MD
Fletcher, JW
Moralez, E
Ott, CR
Olmstead, MG
Savage, JC
Goerzen, CL
Schulein, GJ
Burns, HN
Conrad, B
AF Whalley, Matthew S.
Takahashi, Marc D.
Fletcher, Jay W.
Moralez, Ernesto, III
Ott, Carl R.
Olmstead, Michael G.
Savage, James C.
Goerzen, Chad L.
Schulein, Gregory J.
Burns, Hoyt N.
Conrad, Bill
TI Autonomous Black Hawk in Flight: Obstacle Field Navigation and
Landing-site Selection on the RASCAL JUH-60A
SO JOURNAL OF FIELD ROBOTICS
LA English
DT Article
AB This paper describes the development and flight test of autonomous obstacle field navigation and safe landing area selection on the U. S. Army Aeroflightdynamics Directorate RASCAL JUH-60A research helicopter. Using laser detection and ranging (LADAR) as the primary terrain sensor, the autonomous flight system is able to avoid obstacles, including wires, and select safe landing sites. An autonomous integrated landing zone approach profile was developed and validated that integrates cruise flight, low-level terrain flight, and approach to a safe landing spot determined on the fly. Results are presented for a range of sites and conditions. Approximately 750 km of autonomous flight was performed, 230 km of which was at low altitude in mountainous terrain using the obstacle field navigation system. This is the first time a full-scale helicopter has been flown fully autonomously a significant distance in low-level flight over complex terrain, basing its planning solely on sensor data gathered from an onboard sensor. These flights demonstrate tight integration between terrain avoidance, control, and autonomous landing. (C) 2014 Wiley Periodicals, Inc.
C1 [Whalley, Matthew S.; Takahashi, Marc D.; Fletcher, Jay W.; Moralez, Ernesto, III; Ott, Carl R.; Olmstead, Michael G.] US Army, Aviat Dev Directorate AFDD Aviat & Missile Res De, Dev & Engn Command, Moffett Field, CA 94035 USA.
[Savage, James C.] US Air Force, Res Lab, Weap Seeker Sci Branch AFRL RWWS, Eglin AFB, FL 32542 USA.
[Goerzen, Chad L.; Schulein, Gregory J.] San Jose State Univ, Ames Res Ctr, Moffett Field, CA 94035 USA.
[Burns, Hoyt N.; Conrad, Bill] HN Burns Engn Corp, Orlando, FL 32826 USA.
RP Goerzen, CL (reprint author), San Jose State Univ, Ames Res Ctr, Moffett Field, CA 94035 USA.
EM chad.l.goerzen.ctr@mail.mil
NR 31
TC 3
Z9 3
U1 3
U2 10
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1556-4959
EI 1556-4967
J9 J FIELD ROBOT
JI J. Field Robot.
PD JUL-AUG
PY 2014
VL 31
IS 4
SI SI
BP 591
EP 616
DI 10.1002/rob.21511
PG 26
WC Robotics
SC Robotics
GA AJ4WI
UT WOS:000337679200007
ER
PT J
AU Visbal, M
AF Visbal, Miguel
TI Viscous and inviscid interactions of an oblique shock with a flexible
panel
SO JOURNAL OF FLUIDS AND STRUCTURES
LA English
DT Article
DE Panel flutter; Shock boundary layer interactions; Limit-cycle
oscillations; Flow control
ID NAVIER-STOKES EQUATIONS; NONLINEAR OSCILLATIONS; FLUTTERING PLATE;
BOUNDARY-LAYER; SOLVER; FLOW
AB The complex self-sustained oscillations arising from the interaction of an oblique shock with a flexible panel in both the inviscid and viscous regimes have been investigated numerically. The aeroelastic interactions are simulated using either the Euler or the full compressible Navier Stokes equations coupled to the nonlinear von Karman plate equations. Results demonstrate that for a sufficiently strong shock limit-cycle oscillations emerge from either subcritical or supercritical bifurcations even in the absence of viscous separated flow effects. The critical dynamic pressure diminishes with increasing shock strength and can be much lower than that corresponding to standard panel flutter. Significant changes in panel dynamics were also found as a function of the shock impingement point and cavity pressure. For viscous laminar flow above the panel without a shock, high-frequency periodic oscillations appear due to the coupling of boundary-layer instabilities with high-mode flexural deflections. For a separated shock laminar boundary layer interaction, non-periodic self-excited oscillations arise which can result in a significant reduction in the extent of the time-averaged separation region. This finding suggests the potential use of an aeroelastically tailored flexible panel as a means of passive flow control. Forced panel oscillations, induced by a specified variable cavity pressure underneath the panel, were also found to be effective in reducing separation. For both inviscid and viscous interactions, the significant unsteadiness generated by the fluttering panel propagates along the complex reflected expansion/recompression wave system. Published by Elsevier Ltd.
C1 US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Visbal, M (reprint author), US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM miguel.visbal@wpafb.af.mil
FU AFOSR; DoD HPC Shared Resource Center at AFRL
FX This work was supported in part by AFOSR under a task monitored by Dr.
D. Smith, and by a grant of HPC time from the DoD HPC Shared Resource
Center at AFRL. Helpful conversations with Dr. R. Gordnier (AFRL) are
gratefully acknowledged.
NR 34
TC 5
Z9 5
U1 1
U2 9
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0889-9746
J9 J FLUID STRUCT
JI J. Fluids Struct.
PD JUL
PY 2014
VL 48
BP 27
EP 45
DI 10.1016/j.jfluidstructs.2014.02.003
PG 19
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA AJ4JW
UT WOS:000337643400003
ER
PT J
AU Billock, VA
Tsou, BH
AF Billock, Vincent A.
Tsou, Brian H.
TI Bridging the Divide between Sensory Integration and Binding Theory:
Using a Binding-like Neural Synchronization Mechanism to Model Sensory
Enhancements during Multisensory Interactions
SO JOURNAL OF COGNITIVE NEUROSCIENCE
LA English
DT Article
ID EXTRASTRIATE VISUAL-CORTEX; NEURONAL OSCILLATIONS; SUPERIOR COLLICULUS;
PSYCHOPHYSICAL ANALYSIS; COUPLED OSCILLATORS; UNIMODAL NEURONS;
AUDITORY-CORTEX; NETWORK MODEL; OPTIC TECTUM; GAMMA
AB Neural information combination problems are ubiquitous in cognitive neuroscience. Two important disciplines, although conceptually similar, take radically different approaches to these problems. Sensory binding theory is largely grounded in synchronization of neurons responding to different aspects of a stimulus, resulting in a coherent percept. Sensory integration focuses more on the influences of the senses on each other and is largely grounded in the study of neurons that respond to more than one sense. It would be desirable to bridge these disciplines, so that insights gleaned from either could be harnessed by the other. To link these two fields, we used a binding-like oscillatory synchronization mechanism to simulate neurons in rattlesnake that are driven by one sense but modulated by another. Mutual excitatory coupling produces synchronized trains of action potentials with enhanced firing rates. The same neural synchronization mechanism models the behavior of a population of cells in cat visual cortex that are modulated by auditory activation. The coupling strength of the synchronizing neurons is crucial to the outcome; a criterion of strong coupling (kept weak enough to avoid seriously distorting action potential amplitude) results in intensity-dependent sensory enhancement-the principle of inverse effectiveness-a key property of sensory integration.
C1 [Billock, Vincent A.] Ohio State Univ, Columbus, OH 43210 USA.
[Billock, Vincent A.; Tsou, Brian H.] US Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Billock, VA (reprint author), Ohio State Univ, Coll Optometry, 338 W 10th Ave, Columbus, OH 43210 USA.
EM billock.3@osu.edu
FU AFOSR/NRC Senior Associate award; Spring 2013 Visiting Scholar
appointment for Vincent Billock at the Ohio State University
Mathematical Biosciences Institute
FX We thank Brian Allman, Leslie Keniston, and Alex Meredith for providing
single-cell data; Bard Ermentrout, Nancy Kopell, Benjamin Rowland, and
Jim Schirillo for useful suggestions; and Michael Loop, Eric Newman,
John Rinzel, and Pieter Roelfsema for helpful discussions. This work was
supported by an AFOSR/NRC Senior Associate award to Vincent Billock at
the U.S. Air Force Research Laboratory and by a Spring 2013 Visiting
Scholar appointment for Vincent Billock at the Ohio State University
Mathematical Biosciences Institute.
NR 78
TC 1
Z9 1
U1 4
U2 14
PU MIT PRESS
PI CAMBRIDGE
PA ONE ROGERS ST, CAMBRIDGE, MA 02142-1209 USA
SN 0898-929X
EI 1530-8898
J9 J COGNITIVE NEUROSCI
JI J. Cogn. Neurosci.
PD JUL
PY 2014
VL 26
IS 7
BP 1587
EP 1599
DI 10.1162/jocn_a_00574
PG 13
WC Neurosciences; Psychology, Experimental
SC Neurosciences & Neurology; Psychology
GA AI9CW
UT WOS:000337226700020
PM 24456391
ER
PT J
AU Wadams, RC
Yen, CW
Butcher, DP
Koerner, H
Durstock, MF
Fabris, L
Tabor, CE
AF Wadams, Robert C.
Yen, Chun-wan
Butcher, Dennis P., Jr.
Koerner, Hilmar
Durstock, Michael F.
Fabris, Laura
Tabor, Christopher E.
TI Gold nanorod enhanced organic photovoltaics: The importance of
morphology effects
SO ORGANIC ELECTRONICS
LA English
DT Article
DE Organic photovoltaics; Bulk heterojunction; Plasmon; Nanoparticle;
Nanorod
ID POLYMER SOLAR-CELLS; OPTICAL-PROPERTIES; EFFICIENCY ENHANCEMENT; METAL
NANOPARTICLES; ACTIVE LAYER; ABSORPTION; DEVICES; FILMS; SIZE; SHAPE
AB Organic photovoltaic devices with a 30% improvement in power conversion efficiency are achieved when gold nanorods (Au NR) are incorporated into the active bulk heterojunction (BHJ) layer. Detailed analysis of the system is provided through microscopy, device characterization, and spectroscopy, demonstrating that the enhancement effects are predominantly caused by induced morphology changes in the BHJ film rather than plasmonic effects. Wide angle X-ray diffraction provides evidence that the nanorods loaded into the BHJ film have an effect on polymer crystal orientation, leading to a systematic performance increase in the devices as a result of both internal and external efficiency improvements. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Wadams, Robert C.] Rutgers State Univ, Dept Mat Sci & Engn, Piscataway, NJ 08854 USA.
[Fabris, Laura] Rutgers State Univ, Dept Mat Sci & Engn, Inst Adv Mat Devices & Nanotechnol, Piscataway, NJ 08854 USA.
[Butcher, Dennis P., Jr.; Koerner, Hilmar; Durstock, Michael F.; Tabor, Christopher E.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Tabor, CE (reprint author), Air Force Res Lab, 3005 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM christopher.tabor@us.af.mil
FU National Science Foundation - Nanotechnology for Clean Energy IGERT
[0903661]
FX The authors would like to acknowledge Dr. Kyoungweon Park for her
assistance in nanorod synthesis and Dr. Frank Scheltens/Prof. David
McComb for help with the microscopy which was carried out the Center for
Electron Microscopy and Analysis at The Ohio State University. Funding
Sources: This material is based upon work supported by National Science
Foundation Grant No. 0903661 - Nanotechnology for Clean Energy IGERT.
NR 51
TC 11
Z9 11
U1 0
U2 77
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1566-1199
EI 1878-5530
J9 ORG ELECTRON
JI Org. Electron.
PD JUL
PY 2014
VL 15
IS 7
BP 1448
EP 1457
DI 10.1016/j.orgel.2014.03.039
PG 10
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA AI0NE
UT WOS:000336543500019
ER
PT J
AU Drummond, JD
Carry, B
Merline, WJ
Dumas, C
Hammel, H
Erard, S
Conrad, A
Tambly, P
Chapman, CR
AF Drummond, J. D.
Carry, B.
Merline, W. J.
Dumas, C.
Hammel, H.
Erard, S.
Conrad, A.
Tambly, P.
Chapman, C. R.
TI Dwarf planet Ceres: Ellipsoid dimensions and rotational pole from Keck
and VLT adaptive optics images
SO ICARUS
LA English
DT Article
DE Adaptive optics; Asteroid Ceres; Asteroids
ID PHYSICAL-PROPERTIES; ESA ROSETTA; 21 LUTETIA; ASTEROIDS; SHAPE; DENSITY;
VESTA; DIFFERENTIATION; ALBEDO; SIZE
AB The dwarf planet (1) Ceres, the largest object between Mars and Jupiter, is the target of the NASA Dawn mission, and we seek a comprehensive description of the spin-axis orientation and dimensions of Ceres in order to support the early science operations at the rendezvous in 2015. We have obtained high-angular resolution images using adaptive optics cameras at the W.M. Keck Observatory and the ESO VLT over ten dates between 2001 and 2010, confirming that the shape of Ceres is well described by an oblate spheroid. We derive equatorial and polar diameters of 967 +/- 10 km and 892 +/- 10 km, respectively, for a model that includes fading of brightness towards the terminator, presumably linked to limb darkening. These dimensions lie between values derived from a previous analysis of a subset of these images obtained at Keck by Carry et al. (Carry et al. [2008]. Astron. Astrophys. 478 (4), 235-244) and a study of Hubble Space Telescope observations (Thomas et al. [2005]. Nature 437,224-226). Although the dimensions are 1-2% smaller than those found from the HST, the oblateness is similar.
We find the spin-vector coordinates of Ceres to lie at (287 degrees, +64 degrees) in equatorial EQJ2000 reference frame (346 degrees, +82 degrees in ecliptic ECJ2000 coordinates), yielding a small obliquity of 3 degrees. While this is in agreement with the aforementioned studies, we have improved the accuracy of the pole determination, which we set at a 3 degrees radius. Published by Elsevier Inc.
C1 [Drummond, J. D.] US Air Force, Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
[Carry, B.] CNRS, Observ Paris, IMCCE, F-75014 Paris, France.
[Merline, W. J.; Tambly, P.; Chapman, C. R.] SW Res Inst, Boulder, CO 80302 USA.
[Dumas, C.] ESO, Santiago, Chile.
[Hammel, H.] AURA, Washington, DC 20005 USA.
[Erard, S.] Univ Paris Diderot, CNRS, Observ Paris, LESIA, F-92195 Meudon, France.
[Conrad, A.] Max Planck Inst Astron, D-69117 Heidelberg, Germany.
RP Drummond, JD (reprint author), US Air Force, Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
EM jack.drummond@kirtland.af.mil
FU NASA Planetary Astronomy Program; NSF Planetary Astronomy Program
FX This work was supported by research grants to our group (Merline PI)
from the NASA Planetary Astronomy Program and the NSF Planetary
Astronomy Program. We also thank two referees for their careful readings
and thoughtful suggestions which helped tighten up this paper. The
authors wish to recognize and acknowledge the very significant cultural
role and reverence that the summit of Mauna Kea has always had within
the indigenous Hawaiian community. We are most fortunate to have the
opportunity to conduct observations from this mountain. This research
made use of NASA's Astrophysics Data System.
NR 41
TC 9
Z9 9
U1 0
U2 5
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0019-1035
EI 1090-2643
J9 ICARUS
JI Icarus
PD JUL 1
PY 2014
VL 236
BP 28
EP 37
DI 10.1016/j.icarus.2014.03.038
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AH9QR
UT WOS:000336477400004
ER
PT J
AU Bandeira, AS
Cahill, J
Mixon, DG
Nelson, AA
AF Bandeira, Afonso S.
Cahill, Jameson
Mixon, Dustin G.
Nelson, Aaron A.
TI Saving phase: Injectivity and stability for phase retrieval
SO APPLIED AND COMPUTATIONAL HARMONIC ANALYSIS
LA English
DT Article
DE Phase retrieval; Quantum mechanics; Bilipschitz function; Cramer-Rao
lower bound
ID PROJECTIVE SPACES; EUCLIDEAN-SPACE; FRAMES
AB Recent advances in convex optimization have led to new strides in the phase retrieval problem over finite-dimensional vector spaces. However, certain fundamental questions remain: What sorts of measurement vectors uniquely determine every signal up to a global phase factor, and how many are needed to do so? Furthermore, which measurement ensembles yield stability? This paper presents several results that address each of these questions. We begin by characterizing injectivity, and we identify that the complement property is indeed a necessary condition in the complex case. We then pose a conjecture that 4M - 4 generic measurement vectors are both necessary and sufficient for injectivity in M dimensions, and we prove this conjecture in the special cases where M = 2, 3. Next, we shift our attention to stability, both in the worst and average cases. Here, we characterize worst-case stability in the real case by introducing a numerical version of the complement property. This new property bears some resemblance to the restricted isometry property of compressed sensing and can be used to derive a sharp lower Lipschitz bound on the intensity measurement mapping. Localized frames are shown to lack this property (suggesting instability), whereas Gaussian random measurements are shown to satisfy this property with high probability. We conclude by presenting results that use a stochastic noise model in both the real and complex cases, and we leverage Cramer-Rao lower bounds to identify stability with stronger versions of the injectivity characterizations. Published by Elsevier Inc.
C1 [Bandeira, Afonso S.] Princeton Univ, Program Appl & Computat Math, Princeton, NJ 08544 USA.
[Cahill, Jameson] Univ Missouri, Dept Math, Columbia, MO 65211 USA.
[Mixon, Dustin G.; Nelson, Aaron A.] US Air Force, Inst Technol, Dept Math & Stat, Wright Patterson AFB, OH 45433 USA.
RP Mixon, DG (reprint author), US Air Force, Inst Technol, Dept Math & Stat, Wright Patterson AFB, OH 45433 USA.
FU NSF [DMS-0914892, 1008183]; AFOSR [DGE51: FA9550-11-1-0245]; NSF ATD
[1042701]
FX The authors thank Irene Waldspurger and Profs. Bernhard G. Bodmann,
Matthew Fickus, Thomas Strohmer and Yang Wang for insightful
discussions, and the Erwin Schrodinger International Institute for
Mathematical Physics for hosting a workshop on phase retrieval that
helped solidify some of the ideas in this paper. A.S. Bandeira was
supported by NSF DMS-0914892, and J. Cahill was supported by NSF
1008183, NSF ATD 1042701, and AFOSR DGE51: FA9550-11-1-0245. The views
expressed in this article are those of the authors and do not reflect
the official policy or position of the United States Air Force,
Department of Defense, or the U.S. Government.
NR 37
TC 25
Z9 25
U1 0
U2 6
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 1063-5203
EI 1096-603X
J9 APPL COMPUT HARMON A
JI Appl. Comput. Harmon. Anal.
PD JUL
PY 2014
VL 37
IS 1
BP 106
EP 125
DI 10.1016/j.acha.2013.10.002
PG 20
WC Mathematics, Applied; Physics, Mathematical
SC Mathematics; Physics
GA AH6JV
UT WOS:000336238100007
ER
PT J
AU Benton, SI
Bernardini, C
Bons, JP
Sondergaard, R
AF Benton, Stuart I.
Bernardini, Chiara
Bons, Jeffrey P.
Sondergaard, Rolf
TI Parametric Optimization of Unsteady End Wall Blowing on a Highly Loaded
Low-Pressure Turbine
SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME
LA English
DT Article
ID SECONDARY FLOW; COMPRESSOR CASCADE; ENDWALL; LOSSES
AB Efforts to reduce blade count and avoid boundary layer separation have led to low-pressure turbine airfoils with significant increases in loading as well as front-loaded pressure distributions. These features have been independently shown to increase losses within the secondary flow field at the end wall. Compound angle blowing from discrete jets on the blade suction surface near the end wall has been shown to be effective in reducing these increased losses and enabling the efficient use of highly loaded blade designs. In this study, experiments are performed on the front loaded L2F low-pressure turbine airfoil in a linear cascade. The required mass flow is reduced by decreasing the hole count from previous configurations and from the introduction of unsteady blowing. The effects of pulsing frequency and duty cycle are investigated using phase-locked stereo particle image velocimetry to demonstrate the large scale movement and hysteresis behavior of the passage vortex interacting with the pulsed jets. Total pressure loss contours at the cascade outlet demonstrate that the efficiency benefit is maintained with the use of unsteady forcing.
C1 [Benton, Stuart I.; Bons, Jeffrey P.] Ohio State Univ, Dept Mech & Aerosp Engn, Columbus, OH 43235 USA.
[Sondergaard, Rolf] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
RP Benton, SI (reprint author), Ohio State Univ, Dept Mech & Aerosp Engn, 2300 West Case Rd, Columbus, OH 43235 USA.
EM benton.53@osu.edu; bernardini.3@osu.edu; bons.2@osu.edu;
rolf.sondergaard@wpafb.af.mil
RI Bons, Jeffrey/N-9854-2014; Bernardini, Chiara/F-3881-2015
OI Bernardini, Chiara/0000-0003-1939-4698
FU Dayton Area Graduate Studies Institute through the AFRL/DAGSI Ohio
Student-Faculty Research Fellowship; National Defense Science and
Engineering Graduate Fellowship
FX The authors would like to acknowledge the financial support of the
Dayton Area Graduate Studies Institute through the AFRL/DAGSI Ohio
Student-Faculty Research Fellowship. The first author would also like to
gratefully acknowledge the National Defense Science and Engineering
Graduate Fellowship for continued funding.
NR 20
TC 1
Z9 1
U1 1
U2 5
PU ASME
PI NEW YORK
PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0889-504X
EI 1528-8900
J9 J TURBOMACH
JI J. Turbomach.-Trans. ASME
PD JUL
PY 2014
VL 136
IS 7
AR 071013
DI 10.1115/1.4026127
PG 8
WC Engineering, Mechanical
SC Engineering
GA AH2PT
UT WOS:000335964100013
ER
PT J
AU Flores-Abad, A
Ma, O
Pham, K
Ulrich, S
AF Flores-Abad, Angel
Ma, Ou
Pham, Khanh
Ulrich, Steve
TI A review of space robotics technologies for on-orbit servicing
SO PROGRESS IN AEROSPACE SCIENCES
LA English
DT Review
DE Space robotics; On-orbit servicing; Spacecraft dynamics and control
ID FREE-FLYING ROBOTS; DYNAMICALLY EQUIVALENT MANIPULATOR; VARYING
KINEMATIC CHAINS; INITIAL ANGULAR-MOMENTUM; FREE-FLOATING ROBOT;
REACTION NULL-SPACE; ADAPTIVE-CONTROL; TRAJECTORY CONTROL; FLEXIBLE
LINKS; MOTION CONTROL
AB Space robotics is considered one of the most promising approaches for on-orbit servicing (00S) missions such as docking, berthing, refueling, repairing, upgrading, transporting, rescuing, and orbital debris removal. Many enabling techniques have been developed in the past two decades and several technology demonstration missions have been completed. A number of manned on-orbit servicing missions were successfully accomplished but unmanned, fully autonomous, servicing missions have not been done yet. Furthermore, all previous unmanned technology demonstration missions were designed to service cooperative targets only. Robotic servicing of a non-cooperative satellite is still an open research area facing many technical challenges. One of the greatest challenges is to ensure the servicing spacecraft safely and reliably docks with the target spacecraft or capture the target to stabilize it for subsequent servicing. This is especially important if the target has an unknown motion and kinematics/dynamics properties. Obviously, further research and development of the enabling technologies are needed. To motivate and facilitate such research and development, this paper provides a literature review of the recently developed technologies related to the kinematics, dynamics, control and verification of space robotic systems for manned and unmanned on-orbit servicing missions. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Flores-Abad, Angel; Ma, Ou] New Mexico State Univ, Mech & Aerosp Dept, Las Cruces, NM 88003 USA.
[Pham, Khanh] US Air Force, Kirtland Air Force Base, Res Lab, Kirtland AFB, NM 87117 USA.
[Ulrich, Steve] Carleton Univ, Spacecraft Robot & Control Lab, Ottawa, ON K1S 5B6, Canada.
RP Flores-Abad, A (reprint author), New Mexico State Univ, Mech & Aerosp Dept, Las Cruces, NM 88003 USA.
EM af_abad@nmsu.edu
NR 369
TC 58
Z9 62
U1 29
U2 144
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0376-0421
J9 PROG AEROSP SCI
JI Prog. Aeosp. Sci.
PD JUL
PY 2014
VL 68
BP 1
EP 26
DI 10.1016/j.paerosci.2014.03.002
PG 26
WC Engineering, Aerospace
SC Engineering
GA AH4RC
UT WOS:000336114700001
ER
PT J
AU Adhikari, U
Scheiner, S
Roy, AK
Kar, T
AF Adhikari, Upendra
Scheiner, Steve
Roy, Ajit K.
Kar, Tapas
TI Do phenolic and carboxylic groups coexist at the tips of oxidized
single-wall carbon nanotubes (o-SWNTs)?
SO CARBON
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; AB-INITIO CALCULATION; NONCOVALENT
INTERACTIONS; VIBRATIONAL ABSORPTION; ELECTRONIC-STRUCTURES;
FORCE-FIELDS; CHEMISTRY; PURIFICATION; OXIDATION; SPECTRA
AB Vibrational frequency analyses using density functional theory (DFT) resolves some structural features of purified oxidized single-wall carbon nanotubes (o-SWNTs). Both -COOH and phenolic -OH (OHph) groups, predicted in several experimental studies to be present in o-SWNTs, were considered at the tips of armchair and zigzag tubes with varying diameters. Hydrogen bonding, where carbonyl oxygen acts as proton acceptor while phenolic OH donates the proton, leads to the most stable isomers, with a H-bond energy of 9-12 kcal/mol, almost double that of simpler systems. Vibrational frequencies of participating bonds are significantly red-shifted, which is not reflected in experimental spectra, and which leads to the conclusion that phenolic OH is likely not present at the tips of o-SWNTs. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Adhikari, Upendra; Scheiner, Steve; Kar, Tapas] Utah State Univ, Dept Chem & Biochem, Logan, UT 84322 USA.
[Roy, Ajit K.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Kar, T (reprint author), Utah State Univ, Dept Chem & Biochem, Logan, UT 84322 USA.
EM tapas.kar@usu.edu
FU U.S. DoD High Performance Computing Modernization Program (HPCMP); NSF
[CHE-1026826]; Center for High Performance Computing at Utah State
University
FX This work was supported by the U.S. DoD High Performance Computing
Modernization Program (HPCMP) and NSF (Grant CHE-1026826). We thank the
AFRL/DSRC personnel and Center for High Performance Computing at Utah
State University for their support in using their resources.
NR 68
TC 3
Z9 3
U1 1
U2 35
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0008-6223
EI 1873-3891
J9 CARBON
JI Carbon
PD JUL
PY 2014
VL 73
BP 194
EP 205
DI 10.1016/j.carbon.2014.02.055
PG 12
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA AG0HK
UT WOS:000335096300022
ER
PT J
AU Muratore, C
Hu, JJ
Wang, B
Haque, MA
Bultman, JE
Jespersen, ML
Shamberger, PJ
McConney, ME
Naguy, RD
Voevodin, AA
AF Muratore, C.
Hu, J. J.
Wang, B.
Haque, M. A.
Bultman, J. E.
Jespersen, M. L.
Shamberger, P. J.
McConney, M. E.
Naguy, R. D.
Voevodin, A. A.
TI Continuous ultra-thin MoS2 films grown by low-temperature physical vapor
deposition
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID MOLYBDENUM-DISULFIDE; ATOMIC LAYERS; ELECTRONIC-STRUCTURE; OXYGEN
SUBSTITUTION; METAL DISULFIDES; MONOLAYER MOS2; PHASE GROWTH; SURFACE;
ENERGY; PHOTOLUMINESCENCE
AB Uniform growth of pristine two dimensional (2D) materials over large areas at lower temperatures without sacrifice of their unique physical properties is a critical pre-requisite for seamless integration of next-generation van der Waals heterostructures into functional devices. This Letter describes a vapor phase growth technique for precisely controlled synthesis of continuous, uniform molecular layers of MoS2 on silicon dioxide and highly oriented pyrolitic graphite substrates of over several square centimeters at 350 degrees C. Synthesis of few-layer MoS2 in this ultra-high vacuum physical vapor deposition process yields materials with key optical and electronic properties identical to exfoliated layers. The films are composed of nano-scale domains with strong chemical binding between domain boundaries, allowing lift-off from the substrate and electronic transport measurements from contacts with separation on the order of centimeters. (C) 2014 AIP Publishing LLC.
C1 [Muratore, C.] Univ Dayton, Dept Chem & Mat Engn, Dayton, OH 45469 USA.
[Muratore, C.; Hu, J. J.; Bultman, J. E.; Jespersen, M. L.; Shamberger, P. J.; McConney, M. E.; Naguy, R. D.; Voevodin, A. A.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Hu, J. J.; Bultman, J. E.; Jespersen, M. L.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Wang, B.; Haque, M. A.] Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA.
RP Muratore, C (reprint author), Univ Dayton, Dept Chem & Mat Engn, Dayton, OH 45469 USA.
RI McConney, Michael/A-1680-2011; Shamberger, Patrick/C-4795-2014;
OI Shamberger, Patrick/0000-0002-8737-6064; Wang,
Baoming/0000-0001-8934-099X
NR 37
TC 32
Z9 33
U1 16
U2 140
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD JUN 30
PY 2014
VL 104
IS 26
AR 261604
DI 10.1063/1.4885391
PG 5
WC Physics, Applied
SC Physics
GA AL4PE
UT WOS:000339114100016
ER
PT J
AU Gumbs, G
Iurov, A
Huang, DH
Zhemchuzhna, L
AF Gumbs, Godfrey
Iurov, Andrii
Huang, Danhong
Zhemchuzhna, Liubov
TI Revealing Hofstadter spectrum for graphene in a periodic potential
SO PHYSICAL REVIEW B
LA English
DT Article
ID IRRATIONAL MAGNETIC-FIELDS; DIAMAGNETIC BAND-STRUCTURE; BLOCH ELECTRONS;
DIRAC FERMIONS; SQUARE LATTICE; WAVE-FUNCTIONS; SUPERLATTICES; CRYSTALS;
ARRAY
AB We calculate the energy bands for graphene monolayers when electrons move through a periodic electrostatic potential in the presence of a uniform perpendicular magnetic field. We clearly demonstrate the quantum fractal nature of the energy bands at reasonably low magnetic fields. We present results for the energy bands as functions of both wave number and magnetic flux through the unit cells of the resulting moire superlattice. The effects due to pseudospin coupling and Landau orbit mixing by a strong scattering potential have been exhibited. At low magnetic fields when the Landau orbits are much larger than the period of the modulation, the Landau levels are only slightly broadened. This feature is also observed at extremely high magnetic fields. The density of states has been calculated and shows a remarkable self-similarity like the energy bands. We estimate that for modulation period of 10 nm the region where the Hofstadter butterfly is revealed is B <= 2 T.
C1 [Gumbs, Godfrey; Iurov, Andrii] CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10065 USA.
[Gumbs, Godfrey] Donostia Int Phys Ctr, San Sebastian 20018, Basque Country, Spain.
[Huang, Danhong] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Zhemchuzhna, Liubov] N Carolina Cent Univ, Dept Math & Phys, Durham, NC 27707 USA.
RP Gumbs, G (reprint author), CUNY Hunter Coll, Dept Phys & Astron, 695 Pk Ave, New York, NY 10065 USA.
EM theorist.physics@gmail.com
RI DONOSTIA INTERNATIONAL PHYSICS CTR., DIPC/C-3171-2014
FU AFRL [FA 9453-13-1-0291]
FX This research was supported by Contract No. FA 9453-13-1-0291 of AFRL.
NR 40
TC 6
Z9 6
U1 0
U2 23
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD JUN 30
PY 2014
VL 89
IS 24
AR 241407
DI 10.1103/PhysRevB.89.241407
PG 5
WC Physics, Condensed Matter
SC Physics
GA AL3ST
UT WOS:000339050100002
ER
PT J
AU Ghasemkhani, M
Albrecht, AR
Melgaard, SD
Seletskiy, DV
Cederberg, JG
Sheik-Bahae, M
AF Ghasemkhani, Mohammadreza
Albrecht, Alexander R.
Melgaard, Seth D.
Seletskiy, Denis V.
Cederberg, Jeffrey G.
Sheik-Bahae, Mansoor
TI Intra-cavity cryogenic optical refrigeration using high power vertical
external-cavity surface-emitting lasers (VECSELs)
SO OPTICS EXPRESS
LA English
DT Article
ID TEMPERATURES; RADIATION; YBYLF
AB A 7% Yb:YLF crystal is laser cooled to 131 +/- 1 K from room temperature by placing it inside the external cavity of a high power InGaAs/GaAs VECSEL operating at 1020 nm with 0.15 nm linewidth. This is the lowest temperature achieved in the intracavity geometry to date and presents major progress towards realizing an all-solid-state compact optical cryocooler. (C)2014 Optical Society of America
C1 [Ghasemkhani, Mohammadreza; Albrecht, Alexander R.; Melgaard, Seth D.; Seletskiy, Denis V.; Sheik-Bahae, Mansoor] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
[Melgaard, Seth D.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Cederberg, Jeffrey G.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Seletskiy, Denis V.] Univ Konstanz, Dept Phys, Constance, Germany.
[Seletskiy, Denis V.] Univ Konstanz, Ctr Appl Photon, Constance, Germany.
RP Ghasemkhani, M (reprint author), Univ New Mexico, Dept Phys & Astron, 1919 Lomas Blvd NE MSC 07-4220, Albuquerque, NM 87131 USA.
EM mrghasem@unm.edu
RI Seletskiy, Denis/C-1372-2011
OI Seletskiy, Denis/0000-0003-3480-4595
FU UNM-Science and Technology Corporation (STC) Gap Fund, AFRL
[FA94531310223]; DARPA [10669320]; AFOSR STTR - Thermodynamic Films
(TDF) LLC [FA9550-13-C-0006]; National Research Council Research
Associateship Award at AFRL; National Science Foundation [1160764];
Lockheed Martin Corporation, for the U. S. Department of Energy's
National Nuclear Security Administration [DE-AC04-94AL85000]
FX The authors wish to thank Dr. Richard Epstein for useful discussions,
and AC Materials Inc. for customized sample growth and preparation. We
acknowledge support provided by UNM-Science and Technology Corporation
(STC) Gap Fund, AFRL contract FA94531310223, DARPA grant 10669320, and
AFOSR STTR grant FA9550-13-C-0006 in collaboration with Thermodynamic
Films (TDF) LLC. SDM acknowledges the support of a National Research
Council Research Associateship Award at AFRL. DVS acknowledges support
by the National Science Foundation under Grant No. 1160764. Sandia's
Laboratory Directed Research and Development Office provided growth of
VECSEL devices. Sandia National Laboratories is a multi-program
laboratory managed and operated by Sandia Corporation, a wholly owned
subsidiary of Lockheed Martin Corporation, for the U. S. Department of
Energy's National Nuclear Security Administration under contract
DE-AC04-94AL85000.
NR 27
TC 6
Z9 6
U1 3
U2 17
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD JUN 30
PY 2014
VL 22
IS 13
BP 16232
EP 16240
DI 10.1364/OE.22.016232
PG 9
WC Optics
SC Optics
GA AJ9TN
UT WOS:000338055900101
PM 24977874
ER
PT J
AU Rumi, M
White, TJ
Bunning, TJ
AF Rumi, Mariacristina
White, Timothy J.
Bunning, Timothy J.
TI Reflection spectra of distorted cholesteric liquid crystal structures in
cells with interdigitated electrodes
SO OPTICS EXPRESS
LA English
DT Article
ID MAGNETIC-FIELD; OPTICAL-PROPERTIES; TRANSITION; PITCH
AB We studied the appearance of second- and third-order Bragg reflections in cholesteric liquid crystals (CLCs) in cells where the electric field was perpendicular to the helical axis. Second-order reflections with reflectance values as large as 80% of the first-order one were observed in the gap regions of alignment cells with interdigitated electrodes for CLC mixtures with pitches in the range 0.5-1.0 mu m upon application of a field. The characterization was enabled by local probing of the CLC using a microspectrophotometer. LC cells that are transparent in the visible spectrum in the off-state and become colored upon application of a field due the second-or third-order reflection band appearance were demonstrated. The spectral position of the higher-order Bragg reflections can also be tuned by adjusting the magnitude of the electric field. (C)2014 Optical Society of America
C1 [Rumi, Mariacristina; White, Timothy J.; Bunning, Timothy J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Rumi, Mariacristina] Azimuth Corp, Dayton, OH 45432 USA.
RP Bunning, TJ (reprint author), Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM timothy.bunning@us.af.mil
RI White, Timothy/D-4392-2012; Rumi, Mariacristina/C-9474-2009
OI Rumi, Mariacristina/0000-0002-4597-9617
FU Air Force Office of Scientific Research; Materials and Manufacturing
Directorate of the Air Force Research Laboratory
FX This work was funded by the Air Force Office of Scientific Research and
the Materials and Manufacturing Directorate of the Air Force Research
Laboratory. We thank Prof. Deng-Ke Yang, Kent State University, for
kindly providing the IDE cells.
NR 29
TC 1
Z9 1
U1 1
U2 16
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD JUN 30
PY 2014
VL 22
IS 13
BP 16510
EP 16519
DI 10.1364/OE.22.016510
PG 10
WC Optics
SC Optics
GA AJ9TN
UT WOS:000338055900127
PM 24977900
ER
PT J
AU Nguyen, KA
Pachter, R
Day, PN
AF Nguyen, Kiet A.
Pachter, Ruth
Day, Paul N.
TI Density functional theory based generalized effective fragment potential
method
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID INTERMOLECULAR PAULI REPULSION; ADAPTED PERTURBATION-THEORY;
CLOSED-SHELL MOLECULES; KOHN-SHAM ORBITALS; BASIS-SET LIMIT; INTERACTION
ENERGIES; DISTRIBUTED POLARIZABILITIES; APPROXIMATE FORMULA;
BINDING-ENERGIES; WATER CLUSTERS
AB We present a generalized Kohn-Sham (KS) density functional theory (DFT) based effective fragment potential (EFP2-DFT) method for the treatment of solvent effects. Similar to the original Hartree-Fock (HF) based potential with fitted parameters for water (EFP1) and the generalized HF based potential (EFP2-HF), EFP2-DFT includes electrostatic, exchange-repulsion, polarization, and dispersion potentials, which are generated for a chosen DFT functional for a given isolated molecule. The method does not have fitted parameters, except for implicit parameters within a chosen functional and the dispersion correction to the potential. The electrostatic potential is modeled with a multipolar expansion at each atomic center and bond midpoint using Stone's distributed multipolar analysis. The exchange-repulsion potential between two fragments is composed of the overlap and kinetic energy integrals and the nondiagonal KS matrices in the localized molecular orbital basis. The polarization potential is derived from the static molecular polarizability. The dispersion potential includes the intermolecular D3 dispersion correction of Grimme et al. [J. Chem. Phys. 132, 154104 (2010)]. The potential generated from the CAMB3LYP functional has mean unsigned errors (MUEs) with respect to results from coupled cluster singles, doubles, and perturbative triples with a complete basis set limit (CCSD(T)/CBS) extrapolation, of 1.7, 2.2, 2.0, and 0.5 kcal/mol, for the S22, water-benzene clusters, water clusters, and n-alkane dimers benchmark sets, respectively. The corresponding EFP2-HF errors for the respective benchmarks are 2.41, 3.1, 1.8, and 2.5 kcal/mol. Thus, the new EFP2-DFT-D3 method with the CAMB3LYP functional provides comparable or improved results at lower computational cost and, therefore, extends the range of applicability of EFP2 to larger system sizes. (C) 2014 AIP Publishing LLC.
C1 [Nguyen, Kiet A.; Pachter, Ruth; Day, Paul N.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Nguyen, Kiet A.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
[Day, Paul N.] Gen Dynam Informat Technol Inc, Dayton, OH 45431 USA.
RP Nguyen, KA (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
EM kiet.nguyen@wpafb.af.mil; ruth.pachter@wpafb.af.mil
FU Air Force Office of Scientific Research
FX This research has been supported by the Air Force Office of Scientific
Research and by CPU time from the Air Force Research Laboratory DoD
Supercomputing Resource Center.
NR 45
TC 0
Z9 0
U1 1
U2 14
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD JUN 28
PY 2014
VL 140
IS 24
AR 244101
DI 10.1063/1.4883488
PG 10
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AK7UW
UT WOS:000338634200004
PM 24985612
ER
PT J
AU Bomati, EK
Haley, JE
Noel, JP
Deheyn, DD
AF Bomati, Erin K.
Haley, Joy E.
Noel, Joseph P.
Deheyn, Dimitri D.
TI Spectral and structural comparison between bright and dim green
fluorescent proteins in Amphioxus
SO SCIENTIFIC REPORTS
LA English
DT Article
ID TO-RED CONVERSION; GFP-LIKE PROTEINS; BRANCHIOSTOMA-LANCEOLATUM;
CHROMOPHORE FORMATION; MOLECULAR-BASIS; AEQUOREA; CORAL; MODEL;
CRYSTALLOGRAPHY; BIOSENSORS
AB The cephalochordate Amphioxus naturally co-expresses fluorescent proteins (FPs) with different brightness, which thus offers the rare opportunity to identify FP molecular feature/s that are associated with greater/lower intensity of fluorescence. Here, we describe the spectral and structural characteristics of green FP (bfloGFPa1) with perfect (100%) quantum efficiency yielding to unprecedentedly-high brightness, and compare them to those of co-expressed bfloGFPc1 showing extremely-dim brightness due to low (0.1%) quantum efficiency. This direct comparison of structure-function relationship indicated that in the bright bfloGFPa1, a Tyrosine (Tyr159) promotes a ring flipping of a Tryptophan (Trp157) that in turn allows a cis-trans transformation of a Proline (Pro55). Consequently, the FP chromophore is pushed up, which comes with a slight tilt and increased stability. FPs are continuously engineered for improved biochemical and/or photonic properties, and this study provides new insight to the challenge of establishing a clear mechanistic understanding between chromophore structural environment and brightness level.
C1 [Bomati, Erin K.; Deheyn, Dimitri D.] Univ Calif San Diego, Scripps Inst Oceanog, Div Marine Biol Res, La Jolla, CA 92037 USA.
[Haley, Joy E.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Noel, Joseph P.] Jack H Skirball Ctr Chem Biol & Prote, Salk Inst Biol Studies, Howard Hughes Med Inst, La Jolla, CA 92037 USA.
RP Deheyn, DD (reprint author), Univ Calif San Diego, Scripps Inst Oceanog, Div Marine Biol Res, La Jolla, CA 92037 USA.
EM ddeheyn@ucsd.edu
FU Air Force Office of Scientific Research [AFOSR FA9550-07-1-0027]
FX We thank Dr. Michael Latz (SIO) for providing access to additional
laboratory space and facilities, and Dr. Evelien DeMeulenaere (KUL,
Belgium) for comments on the manuscript. Research supported by the Air
Force Office of Scientific Research, grant # AFOSR FA9550-07-1-0027 (to
D.D.D.).
NR 69
TC 5
Z9 5
U1 1
U2 36
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD JUN 27
PY 2014
VL 4
AR 5469
DI 10.1038/srep05469
PG 9
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AK0KP
UT WOS:000338101800004
PM 24968921
ER
PT J
AU Lee, JM
Factor, S
Lin, Z
Vitebskiy, I
Ellis, FM
Kottos, T
AF Lee, J. M.
Factor, S.
Lin, Z.
Vitebskiy, I.
Ellis, F. M.
Kottos, T.
TI Reconfigurable Directional Lasing Modes in Cavities with Generalized
P(T)over tilde Symmetry
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We introduce a new family of generalized P(T) over tilde-symmetric cavities that involve gyrotropic elements and support reconfigurable unidirectional lasing modes. We derive conditions for which these modes exist and investigate a simple electronic circuit that experimentally demonstrates their feasibility in the radio-frequency domain.
C1 [Lee, J. M.; Factor, S.; Lin, Z.; Ellis, F. M.; Kottos, T.] Wesleyan Univ, Dept Phys, Middletown, CT 06459 USA.
[Lin, Z.] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
[Vitebskiy, I.] Sensors Directorate, Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Lee, JM (reprint author), Wesleyan Univ, Dept Phys, Middletown, CT 06459 USA.
FU Air Force Research Laboratory (AFRL/RYDP) through the AMMTIAC contract
with Alion Science and Technology; Air Force Office of Scientific
Research [LRIR09RY04COR, FA 9550-10-1-0433]; AFOSR MURI
[FA9550-14-1-0037]; NSF [ECCS-1128571]
FX This work is partly sponsored by the Air Force Research Laboratory
(AFRL/RYDP) through the AMMTIAC contract with Alion Science and
Technology and partly by the Air Force Office of Scientific Research
LRIR09RY04COR and FA 9550-10-1-0433, AFOSR MURI Grant No.
FA9550-14-1-0037, and an NSF Grant No. ECCS-1128571.
NR 24
TC 9
Z9 9
U1 0
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD JUN 25
PY 2014
VL 112
IS 25
AR 253902
DI 10.1103/PhysRevLett.112.253902
PG 5
WC Physics, Multidisciplinary
SC Physics
GA AK7YQ
UT WOS:000338644200012
PM 25014817
ER
PT J
AU Goh, BM
Wang, Y
Reddy, MV
Ding, YL
Lu, L
Bunker, C
Loh, KP
AF Goh, Bee-Min
Wang, Yu
Reddy, M. V.
Ding, Yuan Li
Lu, Li
Bunker, Christopher
Loh, Kian Ping
TI Filling the Voids of Graphene Foam with Graphene "Eggshell" for Improved
Lithium-Ion Storage
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE CVD; graphene; lithium ion battery; electrochemistry; capacity
ID NEGATIVE ELECTRODE; ENERGY-STORAGE; BATTERIES; GRAPHITE; CARBON; ANODE;
POWER
AB Highly porous, N-doped graphene foam is synthesized by chemical vapor deposition process on nickel foam. The voids of the graphene foam can be filled with curved graphene sheets by impregnating the nickel foam template with micrometer-sized nickel powder. Subsequent etching of nickel produces a graphene "eggshells"-in-graphene foam structure. The reversible capacity of such graphene foam when used as anode in lithium ion battery is improved by the presence of graphene "eggshells", as compared to the unfilled foam. The improvement is attributed to the higher rate of lithium diffusion, better buffering of strain associated with lithiation/delithiation and higher volumetric energy density of the unique eggshell-in-graphene foam structure.
C1 [Goh, Bee-Min; Wang, Yu; Reddy, M. V.; Loh, Kian Ping] Natl Univ Singapore, Dept Chem, Graphene Res Ctr, Singapore 117543, Singapore.
[Ding, Yuan Li; Lu, Li] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore.
[Bunker, Christopher] Air Force Res Lab, Prop Directorate, Wright Patterson Air Force Base, Dayton, OH 45433 USA.
RP Loh, KP (reprint author), Natl Univ Singapore, Dept Chem, Graphene Res Ctr, 3 Sci Dr 3, Singapore 117543, Singapore.
EM chmlohkp@nus.edu.sg
RI Wang, Yu/D-8849-2011; M. V., Reddy/B-3524-2010; Loh, Kian
Ping/M-3122-2016
OI Wang, Yu/0000-0002-3883-5578; M. V., Reddy/0000-0002-6979-5345; Loh,
Kian Ping/0000-0002-1491-743X
FU MOE [R-143-000-488-112]; AOARD [124033]; NRF-CRP [R-143-000-546-28]
FX This work was supported by a MOE Tier 2 AcRF Grant "Interface
engineering of graphene hybrids for energy conversion R-143-000-488-112"
as well as AOARD grant 124033 "Fabrication of porous carbon
nanostructure for energy storage and transfer application". K.P. Loh
also acknowledges provision of NRF-CRP grant "Towards commerical
application of grapene R-143-000-546-28". We also thank B. V. R.
Chowdari for allowing the use of facilities.
NR 39
TC 21
Z9 22
U1 6
U2 82
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1944-8244
J9 ACS APPL MATER INTER
JI ACS Appl. Mater. Interfaces
PD JUN 25
PY 2014
VL 6
IS 12
BP 9835
EP 9841
DI 10.1021/am5022655
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA AK1ON
UT WOS:000338184500112
PM 24857682
ER
PT J
AU Huang, DH
Easter, M
Gumbs, G
Maradudin, AA
Lin, SY
Cardimona, D
Zhang, X
AF Huang, Danhong
Easter, Michelle
Gumbs, Godfrey
Maradudin, A. A.
Lin, Shawn-Yu
Cardimona, Dave
Zhang, Xiang
TI Resonant scattering of surface plasmon polaritons by dressed quantum
dots
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID SEMICONDUCTORS; SPECTROSCOPY; ABSORPTION; ROUGHNESS
AB The resonant scattering of surface plasmon-polariton waves (SPP) by embedded semiconductor quantum dots above the dielectric/metal interface is explored in the strong-coupling regime. In contrast to non-resonant scattering by a localized dielectric surface defect, a strong resonant peak in the spectrum of the scattered field is predicted that is accompanied by two side valleys. The peak height depends nonlinearly on the amplitude of SPP waves, reflecting the feedback dynamics from a photon-dressed electron-hole plasma inside the quantum dots. This unique behavior in the scattered field peak strength is correlated with the occurrence of a resonant dip in the absorption spectrum of SPP waves due to the interband photon-dressing effect. Our result on the scattering of SPP waves may be experimentally observable and applied to spatially selective illumination and imaging of individual molecules. (C) 2014 AIP Publishing LLC.
C1 [Huang, Danhong; Cardimona, Dave] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Easter, Michelle] Stevens Inst Technol, Dept Mech Engn, Hoboken, NJ 07030 USA.
[Gumbs, Godfrey] CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10065 USA.
[Maradudin, A. A.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
[Lin, Shawn-Yu] Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA.
[Zhang, Xiang] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
RP Huang, DH (reprint author), Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RI Zhang, Xiang/F-6905-2011
NR 19
TC 4
Z9 4
U1 1
U2 21
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD JUN 23
PY 2014
VL 104
IS 25
AR 251103
DI 10.1063/1.4883859
PG 5
WC Physics, Applied
SC Physics
GA AK6CQ
UT WOS:000338515900003
ER
PT J
AU Dyakonov, GS
Mironov, S
Zherebtsov, SV
Malysheva, SP
Salishchev, GA
Salem, AA
Semiatin, SL
AF Dyakonov, G. S.
Mironov, S.
Zherebtsov, S. V.
Malysheva, S. P.
Salishchev, G. A.
Salem, A. A.
Semiatin, S. L.
TI Grain-structure development in heavily cold-rolled alpha-titanium
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE EBSD; Nanostructured materials; Titanium alloys; Bulk deformation; Grain
refinement
ID COMMERCIAL-PURITY TITANIUM; TEXTURE EVOLUTION; DEFORMATION;
MICROSTRUCTURE; ALLOYS; MECHANISMS; TI
AB High-resolution electron back-scatter diffraction (EBSD) analysis was employed to establish mirco-structure evolution in heavily cold-rolled alpha-titanium. After thickness reductions of 75% to 96%, significant microstructure and texture changes were documented. The surface area of high-angle grain boundaries was almost tripled, thus giving rise to an ultra-fine microstructure with a mean grain size of 0.6 mu m. Moreover, orientation spread around typical 'split-basal' rolling texture substantially increased. These effects were suggested to be related to the enhancement of pyramidal (c+a) slip. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Dyakonov, G. S.] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia.
[Mironov, S.] Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Aoba Ku, Sendai, Miyagi 9808579, Japan.
[Zherebtsov, S. V.; Salishchev, G. A.] Belgorod State Univ, Lab Bulk Nanostruct Mat, Belgorod 308015, Russia.
[Malysheva, S. P.] Russian Acad Sci, Inst Met Superplast Problems, Ufa 450001, Russia.
[Salem, A. A.] Mat Resources LLC, Dayton, OH 45402 USA.
[Salem, A. A.; Semiatin, S. L.] AFRL, Mat & Mfg Directorate, RXCM, Wright Patterson AFB, OH 45433 USA.
RP Mironov, S (reprint author), Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Aoba Ku, 6-6-02 Aramaki Aza, Sendai, Miyagi 9808579, Japan.
EM smironov@material.tohoku.ac.jp
RI Zherebtsov, Sergey/G-7435-2011; Salishchev, Gennady/G-4767-2016;
SEMIATIN, SHELDON/E-7264-2017;
OI Zherebtsov, Sergey/0000-0002-1663-429X; Salishchev,
Gennady/0000-0002-0815-3525; Dyakonov, Grigory/0000-0001-5389-5547;
Salem, Ayman/0000-0003-0907-1502
NR 24
TC 2
Z9 2
U1 2
U2 23
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
EI 1873-4936
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD JUN 23
PY 2014
VL 607
BP 145
EP 154
DI 10.1016/j.msea.2014.03.141
PG 10
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA AJ4KB
UT WOS:000337644000020
ER
PT J
AU Ullrich, B
Xi, H
Wang, JS
AF Ullrich, B.
Xi, H.
Wang, J. S.
TI Photoinduced band filling in strongly confined colloidal PbS quantum
dots
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID MULTIPLE EXCITON GENERATION; ABSORPTION; PHOTOLUMINESCENCE; ARRAYS; GAAS
AB Increase in continuous wave laser excitation (6W/cm(2) to 120 W/cm(2)) of colloidal PbS quantum dots in the strongly quantized regime (diameters 2.0 nm and 4.7 nm) deposited on semi-insulating GaAs and glass causes a clear blue shift (0.019 eV and 0.080 eV) of the emission spectra. Proof of the applicability of a dynamic three-dimensional band filling model is the significance of the presented results and demonstrates the effective electronic coupling in quantum dot arrays similar to superlattices. The work also reveals the influence of quantum dot sizes on photo-doping effects. (C) 2014 AIP Publishing LLC.
C1 [Ullrich, B.] Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62210, Morelos, Mexico.
[Ullrich, B.] Ullrich Photon LLC, Wayne, OH 43466 USA.
[Xi, H.] Bowling Green State Univ, Dept Phys & Astron, Bowling Green, OH 43403 USA.
[Wang, J. S.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Ullrich, B (reprint author), Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62210, Morelos, Mexico.
EM bruno@fis.unam.mx
FU DGAPA-UNAM PAPIIT Project [TB100213-RR170213]
FX The work was partially supported by the DGAPA-UNAM PAPIIT Project No.
TB100213-RR170213, PI Bruno Ullrich.
NR 21
TC 4
Z9 4
U1 1
U2 12
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD JUN 21
PY 2014
VL 115
IS 23
AR 233503
DI 10.1063/1.4883761
PG 4
WC Physics, Applied
SC Physics
GA AK0MB
UT WOS:000338106000011
ER
PT J
AU He, L
Li, MX
Urbas, A
Hu, B
AF He, Lei
Li, Mingxing
Urbas, Augustine
Hu, Bin
TI Optically Tunable Magneto-Capacitance Phenomenon in Organic
Semiconducting Materials Developed by Electrical Polarization of
Intermolecular Charge-Transfer States
SO ADVANCED MATERIALS
LA English
DT Article
ID FIELD DEPENDENCE; AQUEOUS-SOLUTION; SPIN-DYNAMICS; HOLE PAIR;
RECOMBINATION; DEVICES; SINGLET; MAGNETORESISTANCE; BLENDS; FILMS
AB Optically tunable magneto-capacitance can be developed by using photo-generated intermolecular charge-transfer (CT) states in an organic donor: acceptor (TPD:BBOT) composite through magnetic field-dependent singlet/triplet ratio and singlet/triplet ratio-dependent electrical polarization. The magnitude and line shape of the magneto-capacitance can be readily tuned by changing the density of intermolecular CT states.
C1 [He, Lei; Li, Mingxing; Hu, Bin] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Urbas, Augustine] AFRL, RXBN, Dayton, OH 45433 USA.
RP Hu, B (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM bhu@utk.edu
RI Hu, Bin/A-2954-2015
OI Hu, Bin/0000-0002-1573-7625
FU Air Force Office of Scientific Research (AFOSR) [FA9550-11-1-0082]; NSF
[ECCS-0644945, ECCS-1102011]; Oak Ridge National Laboratory by the
Division of Scientific User Facilities, U.S. Department of Energy
[CNMS2012-106, CNMS2012-107]
FX The authors would like to acknowledge the financial supports from Air
Force Office of Scientific Research (AFOSR) under the grant number
FA9550-11-1-0082 and from NSF Under grant numbers ECCS-0644945 and
ECCS-1102011. This research was partially conducted at the Center for
Nanophase Materials Sciences based on user project (CNMS2012-106 and
CNMS2012-107), which is sponsored at Oak Ridge National Laboratory by
the Division of Scientific User Facilities, U.S. Department of Energy.
NR 37
TC 9
Z9 9
U1 3
U2 29
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0935-9648
EI 1521-4095
J9 ADV MATER
JI Adv. Mater.
PD JUN 18
PY 2014
VL 26
IS 23
BP 3956
EP 3961
DI 10.1002/adma.201305965
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA AJ4CS
UT WOS:000337618600023
PM 24659341
ER
PT J
AU Lajiness-O'Neill, R
Richard, AE
Moran, JE
Olszewski, A
Pawluk, L
Jacobson, D
Mansour, A
Vogt, K
Erdodi, LA
Moore, AM
Bowyer, SM
AF Lajiness-O'Neill, Renee
Richard, Annette E.
Moran, John E.
Olszewski, Amy
Pawluk, Lesley
Jacobson, Daniel
Mansour, Alfred
Vogt, Kelly
Erdodi, Laszlo A.
Moore, Aimee M.
Bowyer, Susan M.
TI Neural synchrony examined with magnetoencephalography (MEG) during eye
gaze processing in autism spectrum disorders: preliminary findings
SO JOURNAL OF NEURODEVELOPMENTAL DISORDERS
LA English
DT Article
DE Autism spectrum disorder; Eye gaze; Neural synchrony; Coherence;
Magnetoencephalography; Social cognition
ID HIGH-FUNCTIONING AUTISM; GAMMA-BAND RESPONSES; JOINT ATTENTION;
1ST-DEGREE RELATIVES; VISUAL-ATTENTION; YOUNG-CHILDREN; CONNECTIVITY;
BRAIN; INDIVIDUALS; LANGUAGE
AB Background: Gaze processing deficits are a seminal, early, and enduring behavioral deficit in autism spectrum disorder (ASD); however, a comprehensive characterization of the neural processes mediating abnormal gaze processing in ASD has yet to be conducted.
Methods: This study investigated whole-brain patterns of neural synchrony during passive viewing of direct and averted eye gaze in ASD adolescents and young adults (M-Age = 16.6) compared to neurotypicals (NT) (M-Age = 17.5) while undergoing magnetoencephalography. Coherence between each pair of 54 brain regions within each of three frequency bands (low frequency (0 to 15 Hz), beta (15 to 30 Hz), and low gamma (30 to 45 Hz)) was calculated.
Results: Significantly higher coherence and synchronization in posterior brain regions (temporo-parietal-occipital) across all frequencies was evident in ASD, particularly within the low 0 to 15 Hz frequency range. Higher coherence in fronto-temporo-parietal regions was noted in NT. A significantly higher number of low frequency cross-hemispheric synchronous connections and a near absence of right intra-hemispheric coherence in the beta frequency band were noted in ASD. Significantly higher low frequency coherent activity in bilateral temporo-parieto-occipital cortical regions and higher gamma band coherence in right temporo-parieto-occipital brain regions during averted gaze was related to more severe symptomology as reported on the Autism Diagnostic Interview-Revised (ADI-R).
Conclusions: The preliminary results suggest a pattern of aberrant connectivity that includes higher low frequency synchronization in posterior cortical regions, lack of long-range right hemispheric beta and gamma coherence, and decreased coherence in fronto-temporo-parietal regions necessary for orienting to shifts in eye gaze in ASD; a critical behavior essential for social communication.
C1 [Lajiness-O'Neill, Renee; Richard, Annette E.; Olszewski, Amy; Pawluk, Lesley; Mansour, Alfred; Vogt, Kelly; Moore, Aimee M.] Eastern Michigan Univ, Ypsilanti, MI 48197 USA.
[Lajiness-O'Neill, Renee] Univ Michigan Hlth Syst, Neuropsychol Sect, Dept Psychiat, Ann Arbor, MI USA.
[Lajiness-O'Neill, Renee; Moran, John E.; Pawluk, Lesley; Bowyer, Susan M.] Henry Ford Hosp, Detroit, MI 48202 USA.
[Olszewski, Amy] SUNY Upstate Med Univ, Dept Psychiat, Syracuse, NY 13210 USA.
[Jacobson, Daniel] USMS, US Air Force, Biloxi, MS USA.
[Erdodi, Laszlo A.] Geisel Sch Med Dartmouth, Dept Psychiat, Lebanon, NH USA.
[Bowyer, Susan M.] Wayne State Univ, Detroit, MI USA.
[Bowyer, Susan M.] Oakland Univ, Rochester, MI 48063 USA.
RP Lajiness-O'Neill, R (reprint author), Eastern Michigan Univ, Ypsilanti, MI 48197 USA.
EM rlajines@gmail.com
FU Eastern Michigan University
FX This research was supported in part by grants from a new faculty award
(NFA) and a faculty research fellowship award (FRF) from Eastern
Michigan University awarded to the first author.
NR 69
TC 2
Z9 2
U1 3
U2 12
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1866-1947
EI 1866-1955
J9 J NEURODEV DISORD
JI J. Neurodev. Disord.
PD JUN 17
PY 2014
VL 6
AR 15
DI 10.1186/1866-1955-6-15
PG 22
WC Clinical Neurology; Neurosciences
SC Neurosciences & Neurology
GA AK5MR
UT WOS:000338469400001
PM 24976870
ER
PT J
AU Janeczko, AK
Walters, EB
Schuldt, SJ
Magnuson, ML
Willison, SA
Brown, LM
Ruiz, ON
Felker, DL
Racz, L
AF Janeczko, Allen K.
Walters, Edward B.
Schuldt, Steven J.
Magnuson, Matthew L.
Willison, Stuart A.
Brown, Lisa M.
Ruiz, Oscar N.
Felker, Daniel L.
Racz, LeeAnn
TI Fate of malathion and a phosphonic acid in activated sludge with varying
solids retention times
SO WATER RESEARCH
LA English
DT Article
DE Organophosphate; Malathion; Ethylmethylphosphonic acid; Activated
sludge; Solids retention time
ID SEQUENCING BATCH REACTOR; MEMBRANE BIOREACTOR; NITROSOMONAS-EUROPAEA;
ORGANOPHOSPHORUS PESTICIDES; DEGRADATION-PRODUCTS; BIOLOGICAL TREATMENT;
NITRIFYING BACTERIA; NITROGEN REMOVAL; TREATMENT PLANTS; CARBON-SOURCES
AB This study examined the ability of activated sludge (AS) to sorb and biodegrade ethylmethylphosphonic acid (EMPA) and malathion, a degradation product and surrogate, respectively, for an organophosphate chemical warfare agent. Sorption equilibrium isotherm experiments indicate that sorption of EMPA and malathion to AS is negligible. EMPA at a concentration of 1 mg L-1 degraded by approximately 30% with apparent firstorder kinetics, possibly via co-metabolism from nitrification. Heterotrophic bacteria and abiotic mechanisms, however, are largely responsible for malathion degradation also with apparent first-order kinetics. EMPA did not inhibit chemical oxygen demand (COD) oxidation or nitrification activity, although malathion did appear to induce a stress response resulting in inhibition of COD oxidation. The study also included a 30-day experiment in which malathion, at a concentration of 5 mg L-1, was repeatedly fed to AS in bench-scale sequencing batch reactors (SBRs) operating at different solids retention times (SRTs). Peak malathion concentrations occurred at day 4.5, with the longer SATs yielding greater peak malathion concentrations. The AS reduced the malathion concentrations to nearly zero by day 10 for all SRTs, even when the malathion concentration in the influent increased to 20.8 mg L-1. The data suggest a biodegradation pathway for malathion involving an oxygenase. Phylogenetic analyses revealed that all samples had an abundance of Zoogloea, though there was greater bacterial diversity in the SBR with the SRT of 50 days. The SER with an SRT of 9.5 days had an apparent reduction in the diversity of the bacterial community. Published by Elsevier Ltd.
C1 [Janeczko, Allen K.; Walters, Edward B.; Schuldt, Steven J.; Felker, Daniel L.; Racz, LeeAnn] US Air Force, Inst Technol, Dept Syst Engn & Management, Wright Patterson AFB, OH 45433 USA.
[Magnuson, Matthew L.; Willison, Stuart A.] US EPA, Natl Homeland Secur Res Ctr, Cincinnati, OH 45268 USA.
[Brown, Lisa M.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Ruiz, Oscar N.] US Air Force, Res Lab, Aerosp Syst Directorate, Fuels & Energy Branch, Wright Patterson AFB, OH 45433 USA.
RP Racz, L (reprint author), US Air Force, Inst Technol, Dept Syst Engn & Management, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM allen.janeczko.1@us.af.mil; edward.walters@us.af.mil;
steven.schuldt@us.af.mil; magnuson.matthew@epa.gov;
willison.stuart@epa.gov; lisa.brown@udri.udayton.edu;
oscar.ruiz@us.af.mil; daniel.felker@us.af.mil; leeann.racz@us.af.mil
OI Felker, Daniel/0000-0002-7196-3758
FU U.S. Environmental Protection Agency (USEPA), through its Office of
Research and Development [EPA 92351601]
FX The U.S. Environmental Protection Agency (USEPA), through its Office of
Research and Development, performed, managed, funded, and/or
collaborated in the research described herein through an interagency
agreement, EPA 92351601. This content has been peer and administratively
reviewed and has been approved for publication. Note that approval does
not signify that the contents necessarily reflect the views of the
USEPA. Reference herein to any specific commercial product, process, or
service by trade name, trademark, manufacturer, or otherwise does not
necessarily constitute or imply its endorsement, recommendation, or
favoring by the United States government. The views and opinions
expressed herein do not necessarily state or reflect those of the United
States government and shall not be used for advertising or product
endorsement purposes.
NR 73
TC 5
Z9 5
U1 2
U2 35
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0043-1354
J9 WATER RES
JI Water Res.
PD JUN 15
PY 2014
VL 57
BP 127
EP 139
DI 10.1016/j.watres.2014.03.031
PG 13
WC Engineering, Environmental; Environmental Sciences; Water Resources
SC Engineering; Environmental Sciences & Ecology; Water Resources
GA AI9OH
UT WOS:000337261400013
PM 24709533
ER
PT J
AU Shuman, NS
Wiens, JP
Miller, TM
Viggiano, AA
AF Shuman, Nicholas S.
Wiens, Justin P.
Miller, Thomas M.
Viggiano, Albert A.
TI Kinetics of ion-ion mutual neutralization: Halide anions with polyatomic
cations
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID FLOWING-AFTERGLOW PLASMAS; TOTAL CROSS-SECTIONS; RECOMBINATION RATES;
RATE COEFFICIENTS; AB-INITIO; NO; ATTACHMENT; COLLISIONS; SF6; O2
AB The binary mutual neutralization (MN) of a series of 17 cations (O-2(+), NO+, NO2+, CO+, CO2+, Cl+, Cl-2(+), SO2+, CF3+, C2F5+, NH3+, H-3(+), D-3(+), H2O+, H3O+, ArH+, ArD+) with 3 halide anions (Cl-, Br-, I-) has been investigated in a flowing afterglow-Langmuir probe apparatus using the variable electron and neutral density attachment mass spectrometry technique. The MN rate constants of atom-atom reactions are dominated by the chemical nature of the system (i.e., the specific locations of curve crossings). As the number of atoms in the system increases, the MN rate constants become dominated instead by the physical nature of the system (e. g., the relative velocity of the reactants). For systems involving 4 or more atoms, the 300 K MN rate constants are well described by 2.7 x 10(-7) mu(-0.5), where the reduced mass is in Da and the resulting rate constants in cm(3) s(-1). An upper limit to the MN rate constants appears well described by the complex potential model described by Hickman assuming a cross-section to neutralization of 11 000 angstrom(2) at 300 K, equivalent to 3.5 x 10(-7) mu-0.5. (C) 2014 AIP Publishing LLC.
C1 [Shuman, Nicholas S.; Wiens, Justin P.; Miller, Thomas M.; Viggiano, Albert A.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Viggiano, AA (reprint author), Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
EM rvborgmailbox@kirtland.af.mil
FU Air Force Office of Scientific Research [AFOSR-2303EP]; Institute for
Scientific Research of Boston College [FA9453-14-C-0206]; National
Research Council
FX We are grateful for the support of the Air Force Office of Scientific
Research for this work under Project AFOSR-2303EP. T. M. M. is under
contract (No. FA9453-14-C-0206) from the Institute for Scientific
Research of Boston College. J.P.W. acknowledges support of the National
Research Council.
NR 36
TC 11
Z9 11
U1 1
U2 13
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD JUN 14
PY 2014
VL 140
IS 22
AR 224309
DI 10.1063/1.4879780
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AJ6LJ
UT WOS:000337806100026
PM 24929390
ER
PT J
AU Wie, JJ
Lee, KM
White, TJ
AF Wie, Jeong Jae
Lee, Kyung Min
White, Timothy J.
TI Thermally and Optically Fixable Shape Memory in
Azobenzene-Functionalized Glassy Liquid Crystalline Polymer Networks
SO MOLECULAR CRYSTALS AND LIQUID CRYSTALS
LA English
DT Article
DE azobenzene; shape memory; Liquid crystal polymer
ID CROSS-LINKED POLYMERS; PHOTOMECHANICAL RESPONSE; CARBON NANOTUBES;
LIGHT; ELASTOMERS; ACTUATORS; POLYIMIDES; HYDROGELS; DRIVEN; MOTION
AB Thermally and optically fixed shape memory is examined in glassy, azobenzene- functionalized liquid crystalline polymer networks (azo-LCN) in the twisted nematic (TN) geometry. The thermal and optical responses of two materials with a large difference in crosslink density are contrasted. The crosslink density was reduced through the inclusion of a monoacrylate liquid crystal monomer RM23. Reducing the crosslink density decreases the threshold temperature of the thermally-induced shape change and increases the magnitude of the deflection. Surprisingly, samples containing RM23 also allows for retention of a complex permanent shape, potentially due to differentiated thermal response of the pendant and main chain mesogenic units of the azo-LCN material.
C1 [Wie, Jeong Jae; Lee, Kyung Min; White, Timothy J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Wie, Jeong Jae; Lee, Kyung Min] Azimuth Corp, Dayton, OH USA.
RP White, TJ (reprint author), Air Force Res Lab, Mat & Mfg Directorate, 3005 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM Timothy.White.24@us.af.mil
FU Materials and Manufacturing Directorate; Air Force Office of Scientific
Research
FX This work was completed at Air Force Research Laboratory (AFRL) at
Wright-Patterson Air Force Base with funding from Materials and
Manufacturing Directorate as well as Air Force Office of Scientific
Research.
NR 57
TC 4
Z9 4
U1 5
U2 41
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 1542-1406
EI 1563-5287
J9 MOL CRYST LIQ CRYST
JI Mol. Cryst. Liquid Cryst.
PD JUN 13
PY 2014
VL 596
IS 1
SI SI
BP 113
EP 121
DI 10.1080/15421406.2014.918336
PG 9
WC Crystallography
SC Crystallography
GA AQ1RS
UT WOS:000342559300016
ER
PT J
AU Clucas, GV
Dunn, MJ
Dyke, G
Emslie, SD
Levy, H
Naveen, R
Polito, MJ
Pybus, OG
Rogers, AD
Hart, T
AF Clucas, Gemma V.
Dunn, Michael J.
Dyke, Gareth
Emslie, Steven D.
Levy, Hila
Naveen, Ron
Polito, Michael J.
Pybus, Oliver G.
Rogers, Alex D.
Hart, Tom
TI A reversal of fortunes: climate change 'winners' and 'losers' in
Antarctic Peninsula penguins
SO SCIENTIFIC REPORTS
LA English
DT Article
ID SOUTHERN-OCEAN; PYGOSCELIS-PAPUA; MARINE; TEMPERATURE; DNA;
SUBSTITUTIONS; POPULATIONS; ECOSYSTEMS; SEQUENCES; RESPONSES
AB Climate change is a major threat to global biodiversity. Antarctic ecosystems are no exception. Investigating past species responses to climatic events can distinguish natural from anthropogenic impacts. Climate change produces 'winners', species that benefit from these events and 'losers', species that decline or become extinct. Using molecular techniques, we assess the demographic history and population structure of Pygoscelis penguins in the Scotia Arc related to climate warming after the Last Glacial Maximum (LGM). All three pygoscelid penguins responded positively to post-LGM warming by expanding from glacial refugia, with those breeding at higher latitudes expanding most. Northern (Pygoscelis papua papua) and Southern (Pygoscelis papua ellsworthii) gentoo sub-species likely diverged during the LGM. Comparing historical responses with the literature on current trends, we see Southern gentoo penguins are responding to current warming as they did during post-LGM warming, expanding their range southwards. Conversely, Adelie and chinstrap penguins are experiencing a 'reversal of fortunes' as they are now declining in the Antarctic Peninsula, the opposite of their response to post-LGM warming. This suggests current climate warming has decoupled historic population responses in the Antarctic Peninsula, favoring generalist gentoo penguins as climate change 'winners', while Adelie and chinstrap penguins have become climate change 'losers'.
C1 [Clucas, Gemma V.; Dyke, Gareth] Univ Southampton, Natl Oceanog Ctr, Southampton SO14 3ZH, Hants, England.
[Clucas, Gemma V.; Levy, Hila; Pybus, Oliver G.; Rogers, Alex D.; Hart, Tom] Dept Zool, Oxford OX1 3PS, England.
[Dunn, Michael J.] British Antarctic Survey, Cambridge CB3 0ET, England.
[Emslie, Steven D.] Univ N Carolina, Dept Biol & Marine Biol, Wilmington, NC 28403 USA.
[Levy, Hila] USAF, Air Force Inst Technol, Wright Patterson AFB, OH 45433 USA.
[Naveen, Ron] Oceanites Inc, Chevy Chase, MD 20825 USA.
[Polito, Michael J.] Woods Hole Oceanog Inst, Dept Biol, Woods Hole, MA 02543 USA.
RP Clucas, GV (reprint author), Univ Southampton, Natl Oceanog Ctr, Waterfront Campus,European Way, Southampton SO14 3ZH, Hants, England.
EM gemma.clucas@noc.soton.ac.uk
RI Polito, Michael/G-9118-2012;
OI Polito, Michael/0000-0001-8639-4431; Levy, Hila/0000-0001-9204-6417;
Clucas, Gemma/0000-0002-4305-1719; Pybus, Oliver/0000-0002-8797-2667;
Dyke, Gareth/0000-0002-8390-7817
FU Zoological Society of London; Quark Expeditions; Exodus Travels ltd;
Oceanites; Holly Hill Charitable Trust; Charities Advisory Trust; U.S.
National Science Foundation (NSF) Office of Polar Programs [ANT-0739575]
FX We thank the Zoological Society of London, Quark Expeditions, Exodus
Travels ltd., Oceanites, the Holly Hill Charitable Trust, the Charities
Advisory Trust and an U.S. National Science Foundation (NSF) Office of
Polar Programs grant (ANT-0739575) for funding. Thanks to Dr. Richard
Phillips, Dr. Kevin Hughes, Jerome Poncet, Dr. Wayne Trivelpiece, the U.
S. Antarctic Marine Living Resource Program, and the crew of the Golden
Fleece for logistical and sample collection support. Thanks to Dr. Kate
Ciborowski, Dr. Andrew Hitchcock and Dr. John Gittins for advice in the
lab, and Dr. Simon Ho and Dr. Mike Lee for advice about BEAST.
NR 54
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U1 7
U2 119
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD JUN 12
PY 2014
VL 4
AR 5024
DI 10.1038/srep05024
PG 7
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AI9CI
UT WOS:000337225000001
PM 24865774
ER
PT J
AU Mee, JK
Raghunathan, R
Wright, JB
Lester, LF
AF Mee, J. K.
Raghunathan, R.
Wright, J. B.
Lester, L. F.
TI Device geometry considerations for ridge waveguide quantum dot
mode-locked lasers
SO JOURNAL OF PHYSICS D-APPLIED PHYSICS
LA English
DT Review
DE quantum dot; mode-locked laser; ridge waveguide; semicoductor laser;
optical pulse generation
ID LINEWIDTH ENHANCEMENT FACTOR; SEGMENTED CONTACT METHOD; SHORT-PULSE
GENERATION; SEMICONDUCTOR-LASERS; OPTICAL PULSES; TIMING JITTER;
DIODE-LASERS; HIGH-SPEED; GAIN; NOISE
AB Quantum dot mode-locked lasers have emerged as a leading source for the efficient generation of high-quality optical pulses from a compact package, attracting considerable attention for support of multiple high-speed applications, owing to characteristics such as low noise operation and high pulse peak power, in addition to the ability to multiplex the output pulse train in temporal and frequency domains in order to obtain hundreds of GHz pulse repetition rates potentially operating at 1 Tbps. This topical review provides a detailed explanation into the primary advantages of quantum dots, identifying the key features that have made them superior to other material systems for passive mode-locking in semiconductor lasers. Following this account, the impact of the device's cavity geometry on the operational range of two-section, monolithic passively mode-locked lasers is investigated both experimentally and analytically. A model is described that predicts regimes of pulsed operation as a function of absorber length to gain length ratio. Experimental measurements of the pulse time-domain characteristics over a wide range of operating temperatures are found to be in excellent agreement with analytical predictions. The impact of ridge waveguide design on the operational range is also examined and the key dimensions that most strongly impact efficient operation are identified.
C1 [Mee, J. K.] Air Force Res Lab, Space Elect Branch, Kirtland AFB, NM 87117 USA.
[Raghunathan, R.; Lester, L. F.] Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA.
[Wright, J. B.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
RP Mee, JK (reprint author), Air Force Res Lab, Space Elect Branch, Kirtland AFB, NM 87117 USA.
FU Air Force Research Laboratory, AFOSR [FA9550-10-1-0276,
FA9550-10-1-0463]; NSF [ECCS-0903448]; SRC [SRC-2009-HJ-2000]; US
Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX This work was supported in part by the Air Force Research Laboratory,
AFOSR under grants FA9550-10-1-0276 and FA9550-10-1-0463, the NSF under
grant ECCS-0903448 and by the SRC under contract SRC-2009-HJ-2000. This
work was also performed, in part, at the Center for Integrated
Nanotechnologies, an Office of Science User Facility operated for the US
Department of Energy (DOE) Office of Science. Sandia National
Laboratories is a multi-program laboratory managed and operated by
Sandia Corporation, a wholly owned subsidiary of Lockheed Martin
Corporation, for the US Department of Energy's National Nuclear Security
Administration under contract DE-AC04-94AL85000.
NR 77
TC 3
Z9 3
U1 1
U2 21
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0022-3727
EI 1361-6463
J9 J PHYS D APPL PHYS
JI J. Phys. D-Appl. Phys.
PD JUN 11
PY 2014
VL 47
IS 23
AR 233001
DI 10.1088/0022-3727/47/23/233001
PG 16
WC Physics, Applied
SC Physics
GA AI3TH
UT WOS:000336785800001
ER
PT J
AU Murray, JM
Wei, J
Barnes, JO
Slagle, JE
Guha, S
AF Murray, Joel M.
Wei, Jean
Barnes, Jacob O.
Slagle, Jonathan E.
Guha, Shekhar
TI Measuring refractive index using the focal displacement method
SO APPLIED OPTICS
LA English
DT Article
ID DISPERSION-RELATIONS; EPITAXIAL LAYERS; COEFFICIENTS; DEPENDENCE;
CD1-XMNXTE; THICKNESS; GERMANIUM; INAS; GAAS; INSB
AB A simple technique is introduced for measuring the refractive index of plane-parallel samples having thickness of the order of a millimeter. The refractive index values are reported for six bulk semiconductors, each index measured at two infrared wavelengths using this method. The values are found to be within a few percent of those in literature for four semiconductors. The other two semiconductors were newly grown ternary alloys (CdMgTe and CdMnTe), for which the refractive index values have not been reported previously at the wavelengths studied here. (C) 2014 Optical Society of America
C1 [Murray, Joel M.; Wei, Jean; Barnes, Jacob O.] UES Inc, Dayton, OH 45432 USA.
[Slagle, Jonathan E.] Leidos Corp, Dayton, OH 45431 USA.
[Murray, Joel M.; Wei, Jean; Barnes, Jacob O.; Slagle, Jonathan E.; Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Murray, JM (reprint author), UES Inc, Dayton, OH 45432 USA.
NR 19
TC 2
Z9 2
U1 1
U2 5
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1559-128X
EI 2155-3165
J9 APPL OPTICS
JI Appl. Optics
PD JUN 10
PY 2014
VL 53
IS 17
BP 3748
EP 3752
DI 10.1364/AO.53.003748
PG 5
WC Optics
SC Optics
GA AK3RE
UT WOS:000338341600022
PM 24921140
ER
PT J
AU Ziolkowski, M
Schatz, GC
Viggiano, AA
Midey, A
Dotan, I
AF Ziolkowski, Marcin
Schatz, George C.
Viggiano, A. A.
Midey, Anthony
Dotan, Itzhak
TI O-2(X-3 Sigma(-)(g)) and O-2(a(1)Delta(g)) charge exchange with simple
ions
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID CORRELATED MOLECULAR CALCULATIONS; GAUSSIAN-BASIS SETS; ROTATIONAL
TEMPERATURE DEPENDENCES; RATE CONSTANTS; KINETIC-ENERGY; O-2; ATOMS;
AR+; O2; OXYGEN
AB We present theory and experiments which describe charge transfer from the X-3 Sigma(-)(g) and a(1)Delta(g) states of molecular oxygen and atomic and molecular cations. Included in this work are new experimental results for O-2(a(1)Delta(g)) and the cations O+, CO+, Ar+, and N-2(+), and new theory based on complete active space self-consistent field method calculations and an extended Langevin model to calculate rate constants for ground and excited O2 reacting with the atomic ions Ar+, Kr+, Xe+, Cl+, and Br+. The T-shaped orientation of the (X - O-2)(+) potential surface is used for the calculations, including all the low lying states up to the second singlet state of the oxygen molecule b(1) Sigma(+)(g). The calculated rate constants for both O-2(X-3 Sigma(-)(g)) and O-2(a(1)Delta(g)) show consistent trends with the experimental results, with a significant dependence of rate constant on charge transfer exothermicity that does not depend strongly on the nature of the cation. The comparisons with theory show that partners with exothermicities of about 1 eV have stronger interactions with O-2, leading to larger Langevin radii, and also that more of the electronic states are attractive rather than repulsive, leading to larger rate constants. Rate constants for charge transfer involvingO(2)(a(1)Delta(g)) are similar to those for O-2(X-3 Delta(-)(g)) for a given exothermicity ignoring the electronic excitation of the O-2(a(1)Delta(g)) state. This means (and the electronic structure calculations support) that the ground and excited states of O-2 have about the same attractive interactions with ions. (C) 2014 AIP Publishing LLC.
C1 [Ziolkowski, Marcin; Schatz, George C.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Viggiano, A. A.; Midey, Anthony; Dotan, Itzhak] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Dotan, Itzhak] Open Univ Israel, IL-43107 Raanana, Israel.
RP Schatz, GC (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM schatz@chem.northwestern.edu
FU (U.S.) Air Force Office of Scientific Research (USAFOSR)
[FA9550-10-1-0205, FA9550-14-1-0053]; [AFOSR-2303EP]
FX M.Z. and G. C. S. were supported by the (U.S.) Air Force Office of
Scientific Research (USAFOSR) under Grant Nos. FA9550-10-1-0205 and
FA9550-14-1-0053, and the AF authors were supported under Project No.
AFOSR-2303EP.
NR 36
TC 1
Z9 1
U1 3
U2 26
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD JUN 7
PY 2014
VL 140
IS 21
AR 214307
DI 10.1063/1.4879805
PG 12
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AI7VM
UT WOS:000337108900028
PM 24908008
ER
PT J
AU De Sio, L
Tabiryan, N
Bunning, T
AF De Sio, Luciano
Tabiryan, Nelson
Bunning, Timothy
TI Spontaneous radial liquid crystals alignment on curved polymeric
surfaces
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID BRAGG GRATINGS; FILMS
AB We report on the fabrication and characterization of curved periodic microstructures formed through the controlled phase separation of a liquid crystal and a polymerizing matrix comprising self-aligned liquid crystal. Imaging through a "Fresnel like" structure imparts an intensity profile onto a photosensitive mixture which subsequently forms periodic alternating curved polymeric and liquid crystal slices. The phase separated concentric rings of nematic liquid crystal self-align in a radial alignment in between the polymer walls as indicated by polarizing optical microscopy analysis (Maltese cross). Electro-optical experiments confirm the possibility to control this alignment and the optical properties of the macroscopic structure by means of a quite low external voltage. The system exhibits high-quality and self-alignment of an ordered (liquid crystal) fluid without the need of surface chemistry or functionalization. (C) 2014 AIP Publishing LLC.
C1 [De Sio, Luciano; Tabiryan, Nelson] Beam Engn Adv Measurements Co, Winter Pk, FL 32789 USA.
[De Sio, Luciano] Univ Calabria, Dept Phys, I-87036 Arcavacata Di Rende, Italy.
[De Sio, Luciano] Univ Calabria, Ctr Excellence Study Innovat Funct Mat CEMIF CAL, I-87036 Arcavacata Di Rende, Italy.
[Bunning, Timothy] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP De Sio, L (reprint author), Beam Engn Adv Measurements Co, Winter Pk, FL 32789 USA.
EM luciano.desio@fis.unical.it
FU Air Force Office of Scientific Research (AFOSR); Air Force Research
Laboratory (AFRL); U.S. Air Force [FA9550-14-1-0050]; Materials and
Manufacturing Directorate, AFRL
FX The research was supported by the Air Force Office of Scientific
Research (AFOSR), Air Force Research Laboratory (AFRL), U.S. Air Force,
under Grant No. FA9550-14-1-0050 (P. I. L. De Sio, EOARD 2014/2015) and
the Materials and Manufacturing Directorate, AFRL.
NR 19
TC 3
Z9 3
U1 0
U2 17
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD JUN 2
PY 2014
VL 104
IS 22
AR 221112
DI 10.1063/1.4881976
PG 4
WC Physics, Applied
SC Physics
GA AI8KG
UT WOS:000337161700012
ER
PT J
AU Kearns, T
AF Kearns, Trevor
TI Rosetta
SO ISLE-INTERDISCIPLINARY STUDIES IN LITERATURE AND ENVIRONMENT
LA English
DT Poetry
C1 [Kearns, Trevor] US Air Force, Washington, DC USA.
RP Kearns, T (reprint author), Greenfield Community Coll, Greenfield, MA 01301 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 1076-0962
EI 1759-1090
J9 ISLE-INTERDISCIP STU
JI ISLE-Interdiscip. Stud. Lit. Env.
PD SUM
PY 2014
VL 21
IS 3
BP 683
EP 685
DI 10.1093/isle/isu103
PG 3
WC Literature
SC Literature
GA AW5MZ
UT WOS:000346320400015
ER
PT J
AU Kearns, T
AF Kearns, Trevor
TI Sameness
SO ISLE-INTERDISCIPLINARY STUDIES IN LITERATURE AND ENVIRONMENT
LA English
DT Poetry
C1 [Kearns, Trevor] US Air Force, Washington, DC USA.
RP Kearns, T (reprint author), Greenfield Community Coll, Greenfield, MA 01301 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 1076-0962
EI 1759-1090
J9 ISLE-INTERDISCIP STU
JI ISLE-Interdiscip. Stud. Lit. Env.
PD SUM
PY 2014
VL 21
IS 3
BP 686
EP 687
DI 10.1093/isle/isu104
PG 2
WC Literature
SC Literature
GA AW5MZ
UT WOS:000346320400016
ER
PT J
AU Kearns, T
AF Kearns, Trevor
TI Beyond Pardon
SO ISLE-INTERDISCIPLINARY STUDIES IN LITERATURE AND ENVIRONMENT
LA English
DT Poetry
C1 [Kearns, Trevor] US Air Force, Washington, DC USA.
RP Kearns, T (reprint author), Greenfield Community Coll, Greenfield, MA 01301 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 1076-0962
EI 1759-1090
J9 ISLE-INTERDISCIP STU
JI ISLE-Interdiscip. Stud. Lit. Env.
PD SUM
PY 2014
VL 21
IS 3
BP 688
EP 689
DI 10.1093/isle/isu102
PG 2
WC Literature
SC Literature
GA AW5MZ
UT WOS:000346320400017
ER
PT J
AU Greenwell, BM
Kabban, CMS
AF Greenwell, Brandon M.
Kabban, Christine M. Schubert
TI investr: An R Package for Inverse Estimation
SO R JOURNAL
LA English
DT Article
ID CALIBRATION
AB Inverse estimation is a classical and well-known problem in regression. In simple terms, it involves the use of an observed value of the response to make inference on the corresponding unknown value of the explanatory variable. To our knowledge, however, statistical software is somewhat lacking the capabilities for analyzing these types of problems. In this paper, we introduce investr (which stands for inverse estimation in R), a package for solving inverse estimation problems in both linear and nonlinear regression models.
C1 [Greenwell, Brandon M.; Kabban, Christine M. Schubert] US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Greenwell, BM (reprint author), US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
EM brandon.greenwell@afit.edu; christine.schubertkabban@afit.edu
NR 23
TC 4
Z9 4
U1 0
U2 3
PU R FOUNDATION STATISTICAL COMPUTING
PI WIEN
PA WIRTSCHAFTSUNIVERSITAT, INST STATISTICS & MATHEMATICS, AUGASSE 2-6,
WIEN, 1090, AUSTRIA
SN 2073-4859
J9 R J
JI R Journal
PD JUN
PY 2014
VL 6
IS 1
BP 90
EP 100
PG 11
WC Computer Science, Interdisciplinary Applications; Statistics &
Probability
SC Computer Science; Mathematics
GA AR7WQ
UT WOS:000343788100010
ER
PT J
AU Llamocca, D
Murray, V
Jiang, Y
Pattichis, M
Lyke, J
Avery, K
AF Llamocca, Daniel
Murray, Victor
Jiang, Yuebing
Pattichis, Marios
Lyke, James
Avery, Keith
TI Scalable Open-Source Architecture for Real-Time Monitoring of Adaptive
Wiring Panels
SO JOURNAL OF AEROSPACE INFORMATION SYSTEMS
LA English
DT Article
AB The first prototype of an adaptive wiring panel was recently introduced that implemented a reconfigurable switch fabric that allows dynamic routing of analog, digital, and power signals for space system applications. In this paper, a complete redesign and reimplementation of the adaptive wiring panel system is considered to address issues associated with scalability, reliability, and real-time monitoring of the switching fabric. The new system is demonstrated using 48 cells as opposed to the six cells of the first adaptive wiring panel prototype. The hardware and software systems are open source, and recommendations are provided to support further extensions to the system.
C1 [Llamocca, Daniel; Jiang, Yuebing; Pattichis, Marios] Univ New Mexico, Albuquerque, NM 87131 USA.
[Murray, Victor] Univ Ingn Tecnol, Lima 43, Peru.
[Lyke, James; Avery, Keith] US Air Force Res Lab, Albuquerque, NM 87112 USA.
RP Llamocca, D (reprint author), Univ New Mexico, Albuquerque, NM 87131 USA.
OI Llamocca, Daniel/0000-0003-1301-3655
NR 19
TC 5
Z9 5
U1 0
U2 1
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 1940-3151
EI 2327-3097
J9 J AEROSP INFORM SYST
JI J. Aerosp. Inf. Syst.
PD JUN
PY 2014
VL 11
IS 6
BP 344
EP 358
DI 10.2514/1.I010127
PG 15
WC Engineering, Aerospace
SC Engineering
GA AP4RU
UT WOS:000342066800001
ER
PT J
AU Truslow, E
Manolakis, D
Pieper, M
Cooley, T
Brueggeman, M
AF Truslow, Eric
Manolakis, Dimitris
Pieper, Michael
Cooley, Thomas
Brueggeman, Mike
TI Performance Prediction of Matched Filter and Adaptive Cosine Estimator
Hyperspectral Target Detectors
SO IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE
SENSING
LA English
DT Article
DE Hyperspectral imaging; matched filtering; object detection
ID NONHOMOGENEOUS ENVIRONMENTS; DETECTION ALGORITHMS; SUBSPACE DETECTORS;
NORMAL VARIABLES; QUADRATIC-FORMS; IMAGES; MODEL
AB Many applications of hyperspectral remote sensing involve the detection of subpixel targets for search and rescue or defense and intelligence operations. The design and potential capabilities of these systems depends on their target detection performance. Therefore, it is important to have tools that reliably predict the performance of target detection systems under different realistic situations. The purpose of this paper is to present a hyperspectral target performance prediction model for the widely used matched filter (MF) and adaptive cosine estimator (ACE) detectors. We use a replacement signal model for resolved and subpixel targets and a finite probability mixture of t-elliptically contoured distributions (t-ECDs) for the background. A major contribution of this paper is the development of a robust analytical and numerical approach to determine the output distribution of ACE for mixtures of t-ECDs. The proposed technique can be a very useful tool for evaluating target detection performance for highly complex backgrounds.
C1 [Truslow, Eric] Northeastern Univ, Boston, MA 02115 USA.
[Manolakis, Dimitris; Pieper, Michael] MIT Lincoln Lab, Lexington, MA 02421 USA.
[Cooley, Thomas] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Brueggeman, Mike] Natl Air & Space Intelligence Ctr, NASIC GEOINT R&D, Wright Patterson AFB, OH 45433 USA.
RP Truslow, E (reprint author), Northeastern Univ, Boston, MA 02115 USA.
EM truslow.e@husky.neu.edu; dmanolakis@ll.mit.edu; mpieper@ll.mit.edu;
michael.brueggeman@us.af.mil
FU Air Force Research Laboratory under Air Force Contract
[FA8721-05-C-0002]
FX This work is sponsored by the Air Force Research Laboratory under Air
Force Contract #FA8721-05-C-0002. Opinions, interpretations,
conclusions, and recommendations are those of the author and are not
necessarily endorsed by the United States Government.
NR 28
TC 4
Z9 4
U1 1
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1939-1404
EI 2151-1535
J9 IEEE J-STARS
JI IEEE J. Sel. Top. Appl. Earth Observ. Remote Sens.
PD JUN
PY 2014
VL 7
IS 6
SI SI
BP 2337
EP 2350
DI 10.1109/JSTARS.2013.2272697
PG 14
WC Engineering, Electrical & Electronic; Geography, Physical; Remote
Sensing; Imaging Science & Photographic Technology
SC Engineering; Physical Geography; Remote Sensing; Imaging Science &
Photographic Technology
GA AN5HK
UT WOS:000340621200041
ER
PT J
AU Galvagno, SM
Dubose, JJ
Grissom, TE
Fang, R
Smith, R
Bebarta, VS
Shackelford, S
Scalea, TM
AF Galvagno, Samuel M.
Dubose, Joseph J.
Grissom, Thomas E.
Fang, Raymond
Smith, Richard
Bebarta, Vikhyat S.
Shackelford, Stacy
Scalea, Thomas M.
TI The Epidemiology of Critical Care Air Transport Team Operations in
Contemporary Warfare
SO MILITARY MEDICINE
LA English
DT Article
ID SEVERE LUNG INJURY; RESCUE TEAM; MILITARY; FORCE; US
AB Critical Care Air Transport Teams (CCATTs) have evolved as a vital component of the U.S. Air Force's aeromedical evacuation system. Previous epidemiological research in this area is limited. The objective of this commentary is to highlight the importance of obtaining robust epidemiological data regarding patients transported by CCATTs. A limited epidemiological analysis was performed to describe CCATT patients transported during Operation Enduring Freedom and the waning months of Operation Iraqi Freedom. CCATT transports for the calendar year 2011 were examined as recorded in the U.S. Transportation Command Regulating and Command and Control (C2) Evacuation System database. As many as 290 CCATT primary patient transport records were reviewed. Of these, 58.6% of patients had multiple injuries, 15.9% of patients had traumatic brain injury, 7% had acute coronary syndromes, and 24.8% of all transports were for nonbattle-related injuries. The most common International Classification of Disease, 9th Edition, Clinical Modification coded injury was bilateral lower extremity amputation (40%). Explosive blasts were the top mechanism of injury for patients requiring CCAT. The distribution of injuries and illnesses requiring CCAT appear to have changed compared to previous conventional conflicts. Understanding the epidemiology of casualties evacuated by CCATT during modern warfare is a prerequisite for the development of effective predeployment training to ensure optimal outcomes for critically ill and injured warriors.
C1 [Galvagno, Samuel M.; Grissom, Thomas E.] Univ Maryland, Sch Med, Ctr Shock Trauma, Dept Anesthesiol,Div Trauma Anesthesiol,Program T, Baltimore, MD 21201 USA.
[Galvagno, Samuel M.; Grissom, Thomas E.] Univ Maryland, Sch Med, Ctr Shock Trauma, Dept Anesthesiol,Div Crit Care Med,Program Trauma, Baltimore, MD 21201 USA.
[Dubose, Joseph J.; Shackelford, Stacy] Univ Maryland, Sch Med, Ctr Shock Trauma, Program Trauma, Baltimore, MD 21201 USA.
[Dubose, Joseph J.; Fang, Raymond; Shackelford, Stacy] US Air Force, CSTARS, Baltimore, MD 21201 USA.
[Smith, Richard] Air Univ, Maxwell Air Force Base, Montgomery, AL 36112 USA.
[Bebarta, Vikhyat S.] US Army, Inst Surg Res, Route Care Res Ctr, Ft Sam Houston, TX 78234 USA.
RP Galvagno, SM (reprint author), Univ Maryland, Sch Med, Ctr Shock Trauma, Dept Anesthesiol,Div Trauma Anesthesiol,Program T, T1R83,22 South Greene St, Baltimore, MD 21201 USA.
RI bebarta, vikhyat/K-3476-2015
NR 21
TC 3
Z9 3
U1 0
U2 3
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD JUN
PY 2014
VL 179
IS 6
BP 612
EP 618
DI 10.7205/MlLMED-D-13-00474
PG 7
WC Medicine, General & Internal
SC General & Internal Medicine
GA AN7UM
UT WOS:000340806500005
PM 24902127
ER
PT J
AU Nowadly, CD
David, JW
Grogger, MLM
Demkowicz, ER
Atchley, DH
Veverka, DV
AF Nowadly, Craig D.
David, Jason W.
Grogger, Melanie L. M.
Demkowicz, Erik R.
Atchley, Daniel H.
Veverka, Donald V.
TI Characterization of the Effects of Heat Stress on the DNA-Intercalating
Dye EvaGreen for Potential Use With the Joint Biological Agent
Identification and Diagnostic System
SO MILITARY MEDICINE
LA English
DT Article
ID POLYMERASE-CHAIN-REACTION; TIME QUANTITATIVE PCR; GENE-EXPRESSION;
TECHNOLOGY
AB Although advances in real-time polymerase chain reaction (PCR) technology and equipment have facilitated field research, only a limited selection of reagents do not require cold storage. This study explored the temperature stability of the commercially available DNA-intercalating dye EvaGreen after exposure to a spectrum of temperatures for 176 days by analyzing quantification cycle (C-q) and end fluorescence levels during amplification of the invA gene of Salmonella typhimurium. To further characterize potential dye stability, the effects of small differences in dye volume were examined and dye samples were subjected to an Air Force deployment to the Middle East. Significant differences in C-q and end fluorescence were found; however, the magnitude of mean C-q differences was less than one cycle and the magnitude of mean fluorescence differences was less than that attributable to a difference of 0.25 mu L of dye per 25 mu L, reaction. Liquid EvaGreen dye may thus be stable at temperatures as high as 65 C for up to 6 months for use in real-time PCR. These results warrant further investigation by using liquid EvaGreen dye to adapt traditional lab-based real-time PCR assays for Joint Biological Agent Identification and Diagnostic System use and testing the assays in the field.
C1 [Nowadly, Craig D.; David, Jason W.; Grogger, Melanie L. M.; Demkowicz, Erik R.; Veverka, Donald V.] US Air Force Acad, Colorado Springs, CO 80840 USA.
[Atchley, Daniel H.] Harding Univ, Coll Pharm, Searcy, AR 72149 USA.
RP Nowadly, CD (reprint author), US Air Force Acad, 2355 Fac Dr, Colorado Springs, CO 80840 USA.
FU Air Force Medical Services Agency; Life Sciences Research Center
FX Funding and support was provided by the Air Force Medical Services
Agency. Funds came from the Life Sciences Research Center yearly budget
allotment for research.
NR 21
TC 0
Z9 0
U1 0
U2 0
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD JUN
PY 2014
VL 179
IS 6
BP 626
EP 632
DI 10.7205/MlLMED-D-13-00515
PG 7
WC Medicine, General & Internal
SC General & Internal Medicine
GA AN7UM
UT WOS:000340806500007
PM 24902129
ER
PT J
AU Korman, PT
AF Korman, Phillip T.
TI BALANCING THE SCALES: APPLYING THE FAIR COMPENSATION PRINCIPLE TO
DETERMINE RECOVERY FOR COMMERCIAL ITEM CONTRACTS TERMINATED FOR THE
GOVERNMENT'S CONVENIENCE
SO MILITARY LAW REVIEW
LA English
DT Article
RP Korman, PT (reprint author), 78th Air Base Wing, Robins AFB, GA USA.
NR 8
TC 0
Z9 0
U1 0
U2 0
PU JUDGE ADVOCATE GENERALS SCHOOL
PI CHARLOTTESVILLE
PA US ARMY, CHARLOTTESVILLE, VA 22903-1781 USA
SN 0026-4040
J9 MIL LAW REV
JI Milit. Law Rev.
PD SUM
PY 2014
VL 220
BP 218
EP 241
PG 24
WC Law
SC Government & Law
GA AN1EE
UT WOS:000340324700005
ER
PT J
AU McIntire, JP
Wright, ST
Harrington, LK
Havig, PR
Watamaniuk, SNJ
Heft, EL
AF McIntire, John P.
Wright, Steve T.
Harrington, Lawrence K.
Havig, Paul R.
Watamaniuk, Scott N. J.
Heft, Eric L.
TI Optometric measurements predict performance but not comfort on a virtual
object placement task with a stereoscopic three-dimensional display
SO OPTICAL ENGINEERING
LA English
DT Article
DE S3-D; stereopsis; optometry; binocular vision; virtual environment;
depth perception
ID ADAPTATION; TELEVISION; STEREOPSIS; STIMULI
AB Twelve participants were tested on a simple virtual object precision placement task while viewing a stereoscopic three-dimensional (S3-D) display. Inclusion criteria included uncorrected or best corrected vision of 20/20 or better in each eye and stereopsis of at least 40 arc sec using the Titmus stereotest. Additionally, binocular function was assessed, including measurements of distant and near phoria (horizontal and vertical) and distant and near horizontal fusion ranges using standard optometric clinical techniques. Before each of six 30 min experimental sessions, measurements of phoria and fusion ranges were repeated using a Keystone View Telebinocular and an S3-D display, respectively. All participants completed experimental sessions in which the task required the precision placement of a virtual object in depth at the same location as a target object. Subjective discomfort was assessed using the simulator sickness questionnaire. Individual placement accuracy in S3-D trials was significantly correlated with several of the binocular screening outcomes: viewers with larger convergent fusion ranges (measured at near distance), larger total fusion ranges (convergent plus divergent ranges, measured at near distance), and/or lower (better) stereoscopic acuity thresholds were more accurate on the placement task. No screening measures were predictive of subjective discomfort, perhaps due to the low levels of discomfort induced. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
C1 [McIntire, John P.; Havig, Paul R.; Heft, Eric L.] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Wright, Steve T.] US Air Force, Sch Aerosp Med, Wright Patterson AFB, OH 45433 USA.
[Harrington, Lawrence K.] Ball Aerosp, Fairborn, OH 45433 USA.
[Watamaniuk, Scott N. J.] Wright State Univ, Dept Psychol, Dayton, OH 45435 USA.
RP McIntire, JP (reprint author), US Air Force, Res Lab, 711 Human Performance Wing,2255 H St,Bldg 248, Wright Patterson AFB, OH 45433 USA.
EM john.mcintire.1@us.af.mil
NR 29
TC 2
Z9 2
U1 0
U2 8
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
EI 1560-2303
J9 OPT ENG
JI Opt. Eng.
PD JUN
PY 2014
VL 53
IS 6
AR 061711
DI 10.1117/1.OE.53.6.061711
PG 8
WC Optics
SC Optics
GA AN5ZR
UT WOS:000340672800014
ER
PT J
AU Houpt, JW
Blaha, LM
McIntire, JP
Havig, PR
Townsend, JT
AF Houpt, Joseph W.
Blaha, Leslie M.
McIntire, John P.
Havig, Paul R.
Townsend, James T.
TI Systems factorial technology with R
SO BEHAVIOR RESEARCH METHODS
LA English
DT Article
ID WORKLOAD CAPACITY; REDUNDANT-SIGNALS; SELECTIVE INFLUENCE; DIVIDED
ATTENTION; PARALLEL; TIME; SERIAL; MODEL; ARCHITECTURES; PREDICTIONS
AB Systems factorial technology (SFT) comprises a set of powerful nonparametric models and measures, together with a theory-driven experiment methodology termed the double factorial paradigm (DFP), for assessing the cognitive information-processing mechanisms supporting the processing of multiple sources of information in a given task (Townsend and Nozawa, Journal of Mathematical Psychology 39: 321-360, 1995). We provide an overview of the model-based measures of SFT, together with a tutorial on designing a DFP experiment to take advantage of all SFT measures in a single experiment. Illustrative examples are given to highlight the breadth of applicability of these techniques across psychology. We further introduce and demonstrate a new package for performing SFT analyses using R for statistical computing.
C1 [Houpt, Joseph W.] Wright State Univ, Dept Psychol, Dayton, OH 45435 USA.
[Blaha, Leslie M.; McIntire, John P.; Havig, Paul R.] US Air Force Res Lab, Wright Patterson AFB, OH USA.
[Townsend, James T.] Indiana Univ, Bloomington, IN USA.
RP Houpt, JW (reprint author), Wright State Univ, Dept Psychol, 3640 Colonel Glenn Highway, Dayton, OH 45435 USA.
EM joseph.houpt@wright.edu
NR 56
TC 14
Z9 14
U1 3
U2 13
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1554-351X
EI 1554-3528
J9 BEHAV RES METHODS
JI Behav. Res. Methods
PD JUN
PY 2014
VL 46
IS 2
BP 307
EP 330
DI 10.3758/s13428-013-0377-3
PG 24
WC Psychology, Mathematical; Psychology, Experimental
SC Psychology
GA AM9UJ
UT WOS:000340226200001
PM 24019062
ER
PT J
AU Shi, Y
Zesta, E
AF Shi, Yong
Zesta, Eftyhia
TI Global-scale ionospheric flow and aurora precursors of auroral
substorms: Coordinated SuperDARN and IMAGE/WIC observations
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID PLASMA SHEET; MAGNETOTAIL; CONVECTION; SPACECRAFT; RECONNECTION;
DYNAMICS; BURSTS; SYSTEM; ONSET; FUV
AB We use global-scale polar cap flow vector measurements from the Super Dual Auroral Radar Network (SuperDARN) with the concurrent auroral observations from the Wideband Imaging Camera on board Imager for Magnetopause-to-Aurora Global Exploration (IMAGE/WIC) to study the polar cap flow and auroral precursors during a substorm onset on 26 December 2000. We show, for the first time, close connection between the dayside and nightside polar cap flow enhancements (with the enhanced dayside flow preceding the nightside one by several minutes) and the ensuing poleward boundary intensification (PBI)/streamer, and the later onset, forming a complete preonset sequence for a substorm onset. Our results supplement our previous study by providing further evidence that the dayside polar cap flow disturbance may be the key to initiate the whole process of a certain type of substorm by triggering reconnection somewhere in the tail via applied field (or flow) perturbations on the nightside plasma sheet boundary layer. Our results also indicate that a preexisting double oval structure is likely a favorable precondition for a certain type of substorm to be triggered by polar cap flow disturbance and the associated PBIs/streamers. On the other hand, not all our global-scale preonset auroral sequences support the recent revised onset scenario proposed by Nishimura et al. (2010a) using the all-sky imagers of the Time History of Events and Macroscale Interactions during Substorms mission. This suggests that the preceding PBI/streamer is not a sufficient condition to trigger a substorm. It may not even be a necessary condition considering the existence of various types of substorm onsets.
C1 [Shi, Yong] US Air Force, Res Lab, NRC Res Associateship, Albuquerque, NM 87116 USA.
[Shi, Yong] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA.
[Zesta, Eftyhia] NASA Goddard Space Flight Ctr, Greenbelt, MD USA.
RP Shi, Y (reprint author), US Air Force, Res Lab, NRC Res Associateship, Albuquerque, NM 87116 USA.
EM yongshi999@gmail.com
FU NRC Research Associateship at AFRL; NASA [NNH09AL23I, NNX10AL30G]
FX This work was supported in part by the NRC Research Associateship at
AFRL and NASA grants NNH09AL23I and NNX10AL30G. The authors are grateful
to the PIs of the SuperDARN radars and for the support of their national
funding agencies. The authors acknowledge the PIs of the IMAGE FUV and
the IMAGE magnetometer stations for the use of the global auroral images
and magnetometer data. The authors also would like to thank the
INTERMAGNET for providing related magnetometer data.
NR 33
TC 4
Z9 4
U1 0
U2 12
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD JUN
PY 2014
VL 119
IS 6
BP 4860
EP 4871
DI 10.1002/2013JA019175
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AM2VZ
UT WOS:000339710300050
ER
PT J
AU Faris, T
Basova, T
Chaure, NB
Sharma, AK
Durmus, M
Ahsen, V
Ray, AK
AF Faris, Tsegie
Basova, Tamara
Chaure, Nandu B.
Sharma, Ashwani K.
Durmus, Mahmut
Ahsen, Vefa
Ray, Asim K.
TI Effects of annealing on device parameters of organic field effect
transistors using liquid-crystalline tetrasubstituted zinc
phthalocyanine
SO EPL
LA English
DT Article
ID THIN-FILM TRANSISTORS; HYSTERESIS; MODELS
AB The device performance of organic thin-film transistors (OTFTs) employing the solution processed films of room temperature liquid-crystalline tetrasubstituted zinc phthalocyanine derivative was found to depend upon the film morphology. Atomic force microscopic and X-Ray diffraction studies show that the annealing at 70 degrees C produced a preferentially unidirectional void-free film with improved surface smoothness. The OTFTs with the annealed films exhibited enhanced conductivity, threefold reduction in threshold voltage, a nearly one order of magnitude increase in the on/off ratio and more than one-third reduction of hysteresis in the transfer characteristics. Copyright (C) EPLA, 2014
C1 [Faris, Tsegie; Ray, Asim K.] Brunel Univ, Wolfson Ctr Mat Proc, Uxbridge UB8 3PH, Middx, England.
[Basova, Tamara] Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia.
[Basova, Tamara] Novosibirsk State Univ, Novosibirsk 630090, Russia.
[Chaure, Nandu B.] Univ Pune, Dept Phys, Pune 411007, Maharashtra, India.
[Sharma, Ashwani K.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Durmus, Mahmut; Ahsen, Vefa] Gebze Inst Technol, Dept Chem, TR-41400 Gebze, Kocaeli, Turkey.
RP Faris, T (reprint author), Brunel Univ, Wolfson Ctr Mat Proc, Uxbridge UB8 3PH, Middx, England.
EM asim.ray@brunel.ac.uk
FU Air Force Office of Scientific Research, Air Force Material Command,
USAF [FA8655-13-1-3018]; Ministry of Education and Science of the
Russian Federation
FX This work is sponsored by the Air Force Office of Scientific Research,
Air Force Material Command, USAF, under grant No. FA8655-13-1-3018. TB
acknowledges the financial support from the Ministry of Education and
Science of the Russian Federation.
NR 20
TC 2
Z9 2
U1 5
U2 31
PU EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
PI MULHOUSE
PA 6 RUE DES FRERES LUMIERE, MULHOUSE, 68200, FRANCE
SN 0295-5075
EI 1286-4854
J9 EPL-EUROPHYS LETT
JI EPL
PD JUN
PY 2014
VL 106
IS 5
AR 58002
DI 10.1209/0295-5075/106/58002
PG 6
WC Physics, Multidisciplinary
SC Physics
GA AL5CT
UT WOS:000339151800024
ER
PT J
AU Rein, C
AF Rein, Christopher
TI "Our First Duty Was to God and Our Next to Our Country"
SO GREAT PLAINS QUARTERLY
LA English
DT Article
DE American Indians; Colorado; manifest destiny; Methodism; religion; US
Army
C1 US Air Force Acad, Colorado Springs, CO 80840 USA.
RP Rein, C (reprint author), US Air Force Acad, Colorado Springs, CO 80840 USA.
NR 49
TC 1
Z9 1
U1 0
U2 3
PU CENT GREAT PLAINS STUD
PI LINCOLN
PA UNIV NEBRASKA-LINCOLN 1214 OLDFATHER HALL, LINCOLN, NE 68588-0313 USA
SN 0275-7664
J9 GREAT PLAINS QUART
JI Gt. Plains Q.
PD SUM
PY 2014
VL 34
IS 3
BP 217
EP 238
PG 22
WC Humanities, Multidisciplinary
SC Arts & Humanities - Other Topics
GA AL6GF
UT WOS:000339229900002
ER
PT J
AU Geyman, M
Altman, A
Parker, G
AF Geyman, Matthew
Altman, Aaron
Parker, Gregory
TI Wing/Wall Aerodynamic Interactions in Free Flying, Maneuvering MAVS
SO INTERNATIONAL JOURNAL OF MICRO AIR VEHICLES
LA English
DT Article
ID FLOW
AB Micro Air Vehicle (MAV) surveillance in the urban environment involves many aerodynamic hazards such as flying in close proximity to walls. The aerodynamic interactions between a maneuvering MAV's wingtip vortex and its proximity to a building wall could potentially affect the MAV's flight controls. The present study investigates the magnitude of this interaction using a fixed wing MAV vehicle in free flight particle image velocimetry (PIV) and wind tunnel testing. Elliptical instabilities in the wingtip vortex near the wall are discovered in the PIV testing while the wind tunnel results show an increase in aircraft lift coefficient near the wall. In extremely close proximity to the wall, it induces a slight rolling moment on the airplane. A MAV may need to anticipate this behavior and adjust its flight controls to successfully complete its mission in an urban environment.
C1 [Geyman, Matthew; Altman, Aaron] Univ Dayton, Dept Mech & Aerosp Engn, Dayton, OH 45469 USA.
[Parker, Gregory] AFRL, Wright Patterson AFB, OH 45433 USA.
RP Geyman, M (reprint author), Univ Dayton, Dept Mech & Aerosp Engn, 300 Coll Pk Dr, Dayton, OH 45469 USA.
EM matt.geyman@gmail.com; aaltman1@udayton.edu; gregory.parker.14@us.af.mil
FU Air Force Research Lab; Aerospace Systems Directorate; University of
Dayton
FX The authors would like to thank the Air Force Research Lab, Aerospace
Systems Directorate and the University of Dayton for the support for
this project. The authors would also like to thank Dr. Markus Rumpfkiel,
Ben Hagen, Zach Lego, Sidaard Gunasekaran, Patrick Hammer, and Danielle
Christensen for their support of this research.
NR 11
TC 0
Z9 0
U1 0
U2 4
PU MULTI-SCIENCE PUBL CO LTD
PI BRENTWOOD
PA 5 WATES WAY, BRENTWOOD CM15 9TB, ESSEX, ENGLAND
SN 1756-8293
J9 INT J MICRO AIR VEH
JI Int. J. Micro Air Veh.
PD JUN
PY 2014
VL 6
IS 2
BP 89
EP 103
DI 10.1260/1756-8293.6.2.89
PG 15
WC Engineering, Aerospace
SC Engineering
GA AL6TQ
UT WOS:000339266200002
ER
PT J
AU Enloe, CL
Tejero, EM
Amatucci, WE
Crabtree, C
Ganguli, G
Sotnikov, V
AF Enloe, C. L.
Tejero, E. M.
Amatucci, W. E.
Crabtree, C.
Ganguli, G.
Sotnikov, V.
TI Effects of neutral interactions on velocity-shear-driven plasma waves
SO PHYSICS OF PLASMAS
LA English
DT Article
ID ION-CYCLOTRON TURBULENCE; DC ELECTRIC-FIELDS; HYBRID INSTABILITY;
MAGNETIC-FIELDS; BOUNDARY-LAYER; IONOSPHERE; GENERATION
AB In a laboratory experiment, we demonstrate the substantial effects that collisions between charged and neutral particles have on low-frequency (Omega(i) << omega << Omega(e)) shear-driven electrostatic lower hybrid waves in a plasma. We establish a strong (up to 2.5 kV/m) highly localized electric field with a length scale shorter than the ion gyroradius, so that the ions in the plasma, unlike the electrons, do not develop the full E x B drift velocity. The resulting shear in the particle velocities initiates the electron-ion hybrid (EIH) instability, and we observe the formation of strong waves in the vicinity of the shear with variations in plasma densities of 10% or greater. Our experimental configuration allows us to vary the neutral background density by more than a factor of two while holding the charged particle density effectively constant. Not surprisingly, increasing the neutral density decreases the growth rate/saturation amplitude of the waves and increases the threshold electric field necessary for wave formation, but the presence of neutrals affects the dominant wave frequency as well. We show that a 50% increase in the neutral density decreases the wave frequency by 20% while also suppressing the electric field dependence of the frequency that is observed when fewer neutrals are present. The majority of these effects, as well as the values of the frequencies we observe, closely match the predictions of previously developed linear EIH instability theory, for which we present the results of a numerical solution.
C1 [Enloe, C. L.] US Air Force Acad, Dept Phys, Colorado Springs, CO 80840 USA.
[Tejero, E. M.; Amatucci, W. E.; Crabtree, C.; Ganguli, G.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Sotnikov, V.] Air Force Res Lab, Sensors Directorate, Dayton, OH 45433 USA.
RP Enloe, CL (reprint author), US Air Force Acad, Dept Phys, Colorado Springs, CO 80840 USA.
OI Crabtree, Christopher/0000-0002-6682-9992
FU Naval Research Laboratory Base Funds; Air Force Office of Scientific
Research
FX This work was supported by Naval Research Laboratory Base Funds and the
Air Force Office of Scientific Research.
NR 29
TC 0
Z9 0
U1 1
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD JUN
PY 2014
VL 21
IS 6
AR 062114
DI 10.1063/1.4885315
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA AL2ZT
UT WOS:000338995300035
ER
PT J
AU Greener, T
Petersen, D
Pinske, K
AF Greener, Trent
Petersen, Drew
Pinske, Kim
TI Working With Coaches Who Want to Drastically Change the Training Plan
You Have Designed for Their Athletes
SO STRENGTH AND CONDITIONING JOURNAL
LA English
DT Article
AB AS A COLLEGIATE STRENGTH AND CONDITIONING COACH, YOU PUT A LOT OF TIME AND EFFORT IN DESIGNING WHAT YOU BELIEVE IS THE MOST EFFECTIVE STRENGTH AND CONDITIONING PROGRAM YOU CAN PROVIDE TO THE ATHLETES YOU WORK WITH. AT TIMES, THIS PROGRAM MAY DIFFER FROM WHAT THE HEAD SPORTS COACH BELIEVES IS THE BEST APPROACH FOR HIS OR HER TEAM, AND THEY MAY REQUEST THAT YOU MAKE SIGNIFICANT CHANGES TO THIS PROGRAM. OBVIOUSLY, THIS CAN CREATE A DIFFICULT WORKING RELATIONSHIP. WE ASKED OUR PANEL OF COACHES HOW THEY WOULD HANDLE THIS SITUATION IN THEIR OWN WORK SETTING.
C1 [Greener, Trent] Univ Wyoming, Athlet Dept, Laramie, WY 82071 USA.
[Petersen, Drew] Humboldt State Univ, Athlet Dept, Arcata, CA 95521 USA.
[Pinske, Kim] US Air Force Acad, Athlet Dept, Colorado Springs, CO 80840 USA.
RP Greener, T (reprint author), Univ Wyoming, Athlet Dept, Laramie, WY 82071 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1524-1602
EI 1533-4295
J9 STRENGTH COND J
JI Strength Cond. J.
PD JUN
PY 2014
VL 36
IS 3
BP 97
EP 99
PG 3
WC Sport Sciences
SC Sport Sciences
GA AL4KL
UT WOS:000339101700015
ER
PT J
AU DeWitt, MJ
West, Z
Zabarnick, S
Shafer, L
Striebich, R
Higgins, A
Edwards, T
AF DeWitt, Matthew J.
West, Zachary
Zabarnick, Steven
Shafer, Linda
Striebich, Richard
Higgins, Ashil
Edwards, Tim
TI Effect of Aromatics on the Thermal-Oxidative Stability of Synthetic
Paraffinic Kerosene
SO ENERGY & FUELS
LA English
DT Article
ID JET FUEL
AB The effect of aromatic type and concentration on the thermal-oxidative stability characteristics of a synthetic paraffinic kerosene (SPK) aviation fuel was performed using batch and flow reactor systems, in combination with detailed chemical fuel analyses. An improved understanding of the impact of aromatic addition will assist in optimizing beneficial operational characteristics of the SPK feedstocks and the development of fully synthetic jet fuels. A primary goal of this study was to elucidate the controlling reaction chemistry and identify the cause for differing stability characteristics for varying types of aromatics. Studies were performed using a SPK comprised primarily of mildly branched iso- and n-paraffins as the base feedstock; limited studies were performed using a highly branched SPK. Commercially available aromatic solvents were used to represent petroleum-derived jet fuel and potential synthetic aromatic blending streams. These solvents were composed of mono- and diaromatic compounds of varying average molecular weight and size. The resulting thermal-oxidative stability characteristics were highly sensitive to the blend composition, with both increasing aromatic size and concentration, resulting in a higher deposition propensity upon stressing. It was determined that oxidation and molecular growth of the aromatic compounds are the probable primary pathways of surface deposit formation for these blends. Larger aromatic compounds (e.g., diaromatic) require fewer successive growth steps to produce insoluble deposit precursors, resulting in significantly higher deposition propensity than lower molecular weight (e.g., monoaromatic) species. Limited testing showed that the impact of aromatic type on deposition is consistent for different SPK compositions, but the deposit magnitude may be affected.
C1 [DeWitt, Matthew J.; West, Zachary; Zabarnick, Steven; Shafer, Linda; Striebich, Richard; Higgins, Ashil] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Edwards, Tim] Air Force Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA.
RP DeWitt, MJ (reprint author), Univ Dayton, Res Inst, 300 Coll Pk, Dayton, OH 45469 USA.
EM matthew.dewitt@wpafb.af.mil
FU U.S. Air Force Research Laboratory [FA8650-10-2-2934]
FX The authors thank Rhonda Cook and Doug Wolf of the University of Dayton
Research Institute (UDRI) for preparing the fuel blends and the
infrared/elemental analyses of the JFTOT tubes, Ann Mescher and Nick
Stelzenmuller of the University of Washington for collaborations on
initial testing, and Mariam Ajam of Sasol for useful discussions on the
research topic. The authors also thank the reviewers of this manuscript
for useful feedback. This material is based on research sponsored by the
U.S. Air Force Research Laboratory under agreement number
FA8650-10-2-2934.
NR 17
TC 3
Z9 3
U1 2
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
EI 1520-5029
J9 ENERG FUEL
JI Energy Fuels
PD JUN
PY 2014
VL 28
IS 6
BP 3696
EP 3703
DI 10.1021/ef500456e
PG 8
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA AJ6EZ
UT WOS:000337783800016
ER
PT J
AU Smith, SA
AF Smith, Shane A.
TI Afghanistan after the Occupation: Examining the Post-Soviet Withdrawal
and the Najibullah Regime It Left Behind, 1989-1992
SO HISTORIAN
LA English
DT Article
ID WAR
C1 US Air Force, Washington, DC 20301 USA.
RP Smith, SA (reprint author), US Air Force, Washington, DC 20301 USA.
NR 83
TC 0
Z9 0
U1 2
U2 7
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0018-2370
EI 1540-6563
J9 HISTORIAN
JI Historian
PD SUM
PY 2014
VL 76
IS 2
BP 308
EP 343
DI 10.1111/hisn.12035
PG 36
WC History
SC History
GA AJ2SD
UT WOS:000337510600004
ER
PT J
AU Rocke, DJ
Beumer, HW
Taylor, DH
Thomas, S
Puscas, L
Lee, WT
AF Rocke, Daniel J.
Beumer, Halton W.
Taylor, Donald H., Jr.
Thomas, Steven
Puscas, Liana
Lee, Walter T.
TI Physician and Patient and Caregiver Health Attitudes and Their Effect on
Medicare Resource Allocation for Patients With Advanced Cancer
SO JAMA OTOLARYNGOLOGY-HEAD & NECK SURGERY
LA English
DT Article
ID OF-LIFE CARE; COST SAVINGS; END; PREFERENCES; DECISIONS; QUALITY; VALUES
AB IMPORTANCE Physicians must participate in end-of-life discussions, but they understand poorly their patients' end-of-life values and preferences. A better understanding of these preferences and the effect of baseline attitudes will improve end-of-life discussions.
OBJECTIVE To determine how baseline attitudes toward quality vs quantity of life affect end-of-life resource allocation.
DESIGN, SETTING, AND PARTICIPANTS Otolaryngology-head and neck surgery (OHNS) physicians were recruited to use a validated online tool to create a Medicare health plan for advanced cancer patients. During the exercise, participants allocated a limited pool of resources among 15 benefit categories. These data were compared with preliminary data from patients with cancer and their caregivers obtained from a separate study using the same tool. Attitudes toward quality vs quantity of life were assessed for both physicians and patients and caregivers.
INTERVENTIONS Participation in online assessment exercise.
MAIN OUTCOMES AND MEASURES Medicare resource allocation.
RESULTS Of 9120 OHNS physicians e-mailed, 767 participated. Data collected from this group were compared with data collected from 146 patients and 114 caregivers. Compared with patients and caregivers, OHNS physician allocations differed significantly in all 15 benefit categories except home care. When stratified by answers to 3 questions about baseline attitudes toward quality vs quantity of life, there were 3 categories in which allocations of patients and caregivers differed significantly from the group with the opposite attitude for at least 2 questions: other medical care (question 1, P < .001; question 2, P = .005), palliative care (question 1, P = .008; question 2, P = .006; question 3, P = .009), and treatment for cancer (questions 1 and 2, P < .001). In contrast, physician preferences showed significant differences in only 1, nonmatching category for each attitude question: cash (question 1, P = .02), drugs (question 2, P = .03), and home care (question 3, P = .048).
CONCLUSIONS AND RELEVANCE Patients with cancer and their caregivers have different preferences from physicians. These preferences are, for these patients and their caregivers, affected by their baseline health attitudes, but physician preferences are not. Understanding the effect of baseline attitudes is important for effective end-of-life discussions.
C1 [Rocke, Daniel J.; Beumer, Halton W.; Puscas, Liana; Lee, Walter T.] Duke Univ, Med Ctr, Dept Surg, Div Otolaryngol Head & Neck Surg, Durham, NC 27710 USA.
[Beumer, Halton W.] US Air Force, Med Corps, Joint Base Langley Eustis, Arlington, VA USA.
[Taylor, Donald H., Jr.] Duke Sanford Sch Publ Policy, Durham, NC USA.
[Taylor, Donald H., Jr.] Duke Univ, Med Ctr, Durham, NC 27710 USA.
[Thomas, Steven] Duke Univ, Sch Med, Dept Biostat & Bioinformat, Durham, NC 27710 USA.
[Lee, Walter T.] Durham VA Med Ctr, Otolaryngol Sect, Durham, NC USA.
RP Rocke, DJ (reprint author), Duke Univ, Med Ctr, Dept Surg, Div Otolaryngol Head & Neck Surg, Box 3805, Durham, NC 27710 USA.
EM daniel.rocke@dm.duke.edu
FU Agency for Healthcare Research and Quality [5 R01-HS018360]
FX This work was supported in part by Agency for Healthcare Research and
Quality grant 5 R01-HS018360 to Dr Taylor.
NR 21
TC 1
Z9 1
U1 3
U2 8
PU AMER MEDICAL ASSOC
PI CHICAGO
PA 330 N WABASH AVE, STE 39300, CHICAGO, IL 60611-5885 USA
SN 2168-6181
EI 2168-619X
J9 JAMA OTOLARYNGOL
JI JAMA Otolaryngol-Head Neck Surg.
PD JUN
PY 2014
VL 140
IS 6
BP 497
EP 503
DI 10.1001/jamaoto.2014.494
PG 7
WC Otorhinolaryngology; Surgery
SC Otorhinolaryngology; Surgery
GA AJ7PK
UT WOS:000337888400002
PM 24763550
ER
PT J
AU Phan, JK
Shah, SA
AF Phan, Jennifer K.
Shah, Sachin A.
TI Effect of Caffeinated Versus Noncaffeinated Energy Drinks on Central
Blood Pressures
SO PHARMACOTHERAPY
LA English
DT Article
DE energy drinks; blood pressure; caffeine; wave reflections; central
hemodynamics
ID PULSE-WAVE ANALYSIS; CARDIAC-ARREST; DOUBLE-BLIND; CONSUMPTION; ADULTS;
RISK; CHILDREN; ALCOHOL
AB STUDY OBJECTIVE To evaluate the effects of caffeinated energy shots compared with noncaffeinated energy shots as assessed by changes in peripheral and central hemodynamic parameters in healthy subjects.
DESIGN Randomized, double-blind, controlled crossover study.
SETTING University campus.
PATIENTS Ten healthy volunteers.
MEASUREMENTS AND MAIN RESULTS Subjects were randomized to receive either a caffeinated or noncaffeinated energy shot; after a minimum 6 days washout period, subjects were given the alternate energy shot. Peripheral blood pressures, and central hemodynamic parameters, were assessed and recorded for each subject at baseline and at 1 and 3 hours after consumption of the energy shots. Peripheral systolic blood pressure (SBP) increased significantly with the caffeinated energy shot compared with noncaffeinated (8.30 +/- 4.19 mm Hg and -0.20 +/- 5.55, respectively, p=0.009) at 3 hours. Central SBP increased significantly with the caffeinated energy shot compared with noncaffeinated (8.00 +/- 4.03 mm Hg and 1.50 +/- 6.57, respectively, p=0.045) at 3 hours. Peripheral and central diastolic blood pressure were nonsignificantly higher with the caffeinated energy shot at 3 hours. Peripheral and central pulse pressure were consistently higher with consumption of the caffeinated beverage. Heart rate, augmentation index, pulse pressure amplification ratio, ejection duration and Subendocardial Viability Ratio were not different between the two interventions over time. P1 height was significantly higher with the caffeinated shot compared with the noncaffeinated shot at both 1 and 3 hours (p=0.035 and 0.013, respectively). Three and one subjects experienced an adverse effect with the caffeinated and noncaffeinated shot, respectively.
CONCLUSION A caffeinated energy shot acutely increases peripheral and central SBPs compared with a noncaffeinated energy shot. Larger studies with a placebo comparator are needed to assess the significance of peripheral and central hemodynamic changes with noncaffeinated energy drinks.
C1 [Phan, Jennifer K.] Univ Pacific, Thomas J Long Sch Pharm & Hlth Sci, Doctor Pharm Program, Stockton, CA 95204 USA.
[Shah, Sachin A.] Univ Pacific, Thomas J Long Sch Pharm & Hlth Sci, Dept Pharm Practice, Stockton, CA 95204 USA.
[Shah, Sachin A.] Travis AFB, David Grant Med Ctr, Dept Pharm, Fairfield, CA USA.
RP Shah, SA (reprint author), Univ Pacific, Thomas J Long Sch Pharm & Hlth Sci, David Grant US Air Force Med Ctr, 3601 Pacific Ave, Stockton, CA 95204 USA.
EM sshah@pacific.edu
NR 29
TC 8
Z9 8
U1 3
U2 41
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0277-0008
EI 1875-9114
J9 PHARMACOTHERAPY
JI Pharmacotherapy
PD JUN
PY 2014
VL 34
IS 6
BP 555
EP 560
DI 10.1002/phar.1419
PG 6
WC Pharmacology & Pharmacy
SC Pharmacology & Pharmacy
GA AJ5BV
UT WOS:000337696600154
PM 24644139
ER
PT J
AU Overstreet, RE
Hazen, BT
Skipper, JB
Hanna, JB
AF Overstreet, Robert E.
Hazen, Benjamin T.
Skipper, Joseph B.
Hanna, Joe B.
TI Bridging the Gap Between Strategy and Performance: Using Leadership
Style to Enable Structural Elements
SO JOURNAL OF BUSINESS LOGISTICS
LA English
DT Review
DE strategy-structure-performance; organizational commitment;
organizational performance; servant leadership; partial least squares
structural equation modeling
ID SUPPLY CHAIN MANAGEMENT; RESOURCE-BASED VIEW; SUSTAINED COMPETITIVE
ADVANTAGE; COMMON METHOD VARIANCE; ORGANIZATIONAL COMMITMENT; FIRM
PERFORMANCE; SERVANT LEADERSHIP; LOGISTICS RESEARCH; MEASUREMENT ERROR;
MEMBER EXCHANGE
AB Successful leaders create structural elements in order to achieve the performance objectives set forth by organizational strategy. Supply chain oriented structural elements are reflected in an organization's relationships, both within the firm and with supply chain partners. In this research effort, we examine how such structural elements can be created as a means through which to enhance performance. Our hypothesized model is rooted in strategy-structure-performance theory and integrates elements of servant leadership theory and social exchange theory to explain how building organizational commitment via servant leadership behaviors can ultimately impact performance. We use a survey method to collect data from 158 motor carriers. The results of our structural equation model support our hypotheses and serve to extend the discussion of supply chain structural elements and the role of leadership style in achieving organizational performance.
C1 [Overstreet, Robert E.] US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
[Hazen, Benjamin T.] Univ Tennessee, Knoxville, TN 37996 USA.
[Skipper, Joseph B.] Georgia So Univ, Statesboro, GA 30460 USA.
[Hanna, Joe B.] Auburn Univ, Coll Business, Auburn, AL 36849 USA.
RP Overstreet, RE (reprint author), US Air Force, Dept Operat Sci, Inst Technol, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM robert.overstreet@afit.edu
OI Overstreet, Robert/0000-0002-5047-2415
NR 115
TC 3
Z9 3
U1 2
U2 24
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0735-3766
EI 2158-1592
J9 J BUS LOGIST
JI J. Bus. Logist.
PD JUN
PY 2014
VL 35
IS 2
BP 136
EP 149
DI 10.1111/jbl.12043
PG 14
WC Management
SC Business & Economics
GA AJ4TT
UT WOS:000337669900004
ER
PT J
AU Schlueter, KL
Jones, AR
Granlund, K
Oi, M
AF Schlueter, Kristy L.
Jones, Anya R.
Granlund, Kenneth
Oi, Michael
TI Effect of Root Cutout on Force Coefficients of Rotating Wings
SO AIAA JOURNAL
LA English
DT Article; Proceedings Paper
CT 51st AIAA Aerospace Sciences Meeting and Exhibit Including the New
Horizons Forum and Aerospace Exposition
CY JAN 06-11, 2013
CL Grapevine, TX
SP AIAA
ID LOW REYNOLDS-NUMBERS; LEADING-EDGE VORTEX; AERODYNAMICS; LIFT
C1 [Schlueter, Kristy L.; Jones, Anya R.] Univ Maryland, Dept Aerosp Engn, College Pk, MD 20742 USA.
[Granlund, Kenneth; Oi, Michael] US Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
RP Schlueter, KL (reprint author), Univ Maryland, Dept Aerosp Engn, College Pk, MD 20742 USA.
RI Jones, Anya/P-8941-2014
OI Jones, Anya/0000-0002-7991-3974
NR 14
TC 6
Z9 6
U1 0
U2 3
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
EI 1533-385X
J9 AIAA J
JI AIAA J.
PD JUN
PY 2014
VL 52
IS 6
BP 1322
EP 1325
DI 10.2514/1.J052821
PG 4
WC Engineering, Aerospace
SC Engineering
GA AI8ST
UT WOS:000337198000010
ER
PT J
AU Ekici, K
Beran, PS
AF Ekici, Kivanc
Beran, Philip S.
TI Adjoint Sensitivity Analysis of Low-Speed Flows Using an Efficient
Harmonic Balance Technique
SO AIAA JOURNAL
LA English
DT Article; Proceedings Paper
CT 42nd AIAA Fluid Dynamics Conference and Exhibit
CY JUN 25-28, 2012
CL New Orleans, LA
SP AIAA
ID FLAPPING FLIGHT; POWER REQUIREMENTS; UNSTEADY; TURBOMACHINES
C1 [Ekici, Kivanc] Univ Tennessee, Mech Aerosp & Biomed Engn Dept, Knoxville, TN 37996 USA.
[Beran, Philip S.] US Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
RP Ekici, K (reprint author), Univ Tennessee, Mech Aerosp & Biomed Engn Dept, Knoxville, TN 37996 USA.
NR 33
TC 1
Z9 2
U1 1
U2 6
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
EI 1533-385X
J9 AIAA J
JI AIAA J.
PD JUN
PY 2014
VL 52
IS 6
BP 1330
EP 1336
DI 10.2514/1.J052884
PG 7
WC Engineering, Aerospace
SC Engineering
GA AI8ST
UT WOS:000337198000012
ER
PT J
AU Gillespie, DL
Cherry, KJ
Evans, T
Corpus, R
Rasmussen, T
AF Gillespie, David L.
Cherry, Kenneth J.
Evans, Thomas
Corpus, Raul
Rasmussen, Todd
TI Civilian/Military Collaboration in the Management of Military Vascular
Trauma: A 10-year Report of the SVS Volunteer Program
SO JOURNAL OF VASCULAR SURGERY
LA English
DT Meeting Abstract
CT Vascular Annual Meeting of the Society-for-Vascular-Surgery
CY JUN 05-07, 2014
CL Boston, MA
SP Soc Vasc Surg
C1 [Gillespie, David L.] Southcoast Hlth Syst, Cardiovasc Care Ctr, Fall River, MA USA.
[Cherry, Kenneth J.] Univ Virginia, Charlottesville, VA USA.
[Corpus, Raul] US Army Inst Surg Res, San Antonio, TX USA.
[Evans, Thomas] Wilford Hall USAF Med Ctr, San Antonio, TX 78236 USA.
[Rasmussen, Todd] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
NR 0
TC 0
Z9 0
U1 1
U2 2
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0741-5214
J9 J VASC SURG
JI J. Vasc. Surg.
PD JUN
PY 2014
VL 59
IS 6
SU S
BP 35S
EP 36S
PG 2
WC Surgery; Peripheral Vascular Disease
SC Surgery; Cardiovascular System & Cardiology
GA AI9ND
UT WOS:000337258400071
ER
PT J
AU Greenwood, AD
Lehr, FM
Nanni, EA
AF Greenwood, Andrew D.
Lehr, F. Mark
Nanni, Emilio A.
TI The Fifteenth Special Issue on High-Power Microwave Generation
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Editorial Material
C1 [Greenwood, Andrew D.] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
[Lehr, F. Mark] Air Force Res Lab, High Power Electromagnet Div, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
[Nanni, Emilio A.] MIT, Cambridge, MA 02139 USA.
RP Greenwood, AD (reprint author), Air Force Res Lab, Kirtland AFB, NM 87117 USA.
NR 0
TC 0
Z9 0
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD JUN
PY 2014
VL 42
IS 6
SI SI
BP 1481
EP 1481
DI 10.1109/TPS.2014.2323679
PN 1
PG 1
WC Physics, Fluids & Plasmas
SC Physics
GA AI7WO
UT WOS:000337112500001
ER
PT J
AU Elam, AL
McCleskey, PE
AF Elam, Amanda L.
McCleskey, Patrick E.
TI Bilateral Upper Extremity Erythematous Plaques
SO JAMA DERMATOLOGY
LA English
DT Editorial Material
ID ELASTOSIS PERFORANS SERPIGINOSA
C1 [Elam, Amanda L.] Nellis Air Force Base, Nellis AFB, NV 89191 USA.
[McCleskey, Patrick E.] Travis Air Force Base, David Grant Med Ctr, Dept Dermatol, Fairfield, CA 94535 USA.
RP Elam, AL (reprint author), Nellis Air Force Base, 5163 Ellsworth Ave,Bldg 61699, Nellis AFB, NV 89191 USA.
EM aelam6@gmail.com
NR 7
TC 0
Z9 0
U1 0
U2 0
PU AMER MEDICAL ASSOC
PI CHICAGO
PA 330 N WABASH AVE, STE 39300, CHICAGO, IL 60611-5885 USA
SN 2168-6068
EI 2168-6084
J9 JAMA DERMATOL
JI JAMA Dermatol.
PD JUN
PY 2014
VL 150
IS 6
BP 645
EP 646
DI 10.1001/jamadermatol.2013.8840
PG 2
WC Dermatology
SC Dermatology
GA AI7SA
UT WOS:000337095800015
PM 24740425
ER
PT J
AU Garmann, DJ
Visbal, MR
AF Garmann, D. J.
Visbal, M. R.
TI Dynamics of revolving wings for various aspect ratios
SO JOURNAL OF FLUID MECHANICS
LA English
DT Article
DE low-Reynolds-number flows; vortex breakdown; vortex flows
ID LARGE-EDDY SIMULATION; LEADING-EDGE VORTEX; FINITE-DIFFERENCE SCHEMES;
LOW REYNOLDS-NUMBERS; MICRO-AIR VEHICLES; INSECT FLIGHT; FLAPPING
FLIGHT; FLOW STRUCTURE; AERODYNAMICS; IMPLICIT
AB High-fidelity, direct numerical simulations (DNSs) are conducted to examine the vortex structure and aerodynamic loading of unidirectionally revolving wings in quiescent fluid. Wings with aspect ratios. (AR) = 1, 2 and 4 are considered at a fixed root-based Reynolds number of 1000. Each wing is shown to generate a coherent leading-edge vortex (LEV) that remains in close proximity to the surface and provides persistent suction throughout the motion. Towards the tip, the LEV lifts off as an arch-like structure and reorients itself along the chord through its connection with the tip vortex. The substantial and sustained aerodynamic loads achieved during the motion saturate with aspect ratio resulting from the chordwise growth of the LEV along the span eventually becoming geometrically constrained by the trailing edge. Further, for AR = 4, substructures develop in the feeding sheet of the LEV, which appear to directly correlate with the local, span-based Reynolds number achieved during rotation. The lower-aspect-ratio wings do not have sufficient spans for these transitional elements to manifest. In contrast, vortex breakdown, which occurs around midspan for each aspect ratio, shows a strong dependence on the spanwise pressure gradient established between the root and tip of the wing and not local Reynolds number. This independent development of shear-layer substructures and vortex breakdown parallels very closely with what has been observed in delta wing flow. Next, the centrifugal, Coriolis and pressure gradient forces are also analysed at several spanwise locations across each wing, and the centrifugal and pressure gradient forces are shown to be responsible for the spanwise flow above the wing. The Coriolis force is directed away from the surface at the base of the LEV, indicating that it is not a contributor to LEV attachment, which is contrary to previous hypotheses. Finally, as a means of emphasizing the importance of the centrifugal force on LEV attachment, the AR = 2 wing is simulated with the addition of a source term in the governing equations to oppose and eliminate the centrifugal force near the surface. The initial formation and development of the LEV is unhindered by the absence of this force; however, later in the motion, the outboard lift-off of the LEV moves inboard. Without the opposing outboard-directed centrifugal force to keep the separation past midspan, the entire vortex eventually separates and moves away from the surface.
C1 [Garmann, D. J.; Visbal, M. R.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Garmann, DJ (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
EM daniel.garmann.1.ctr@us.af.mil
FU AFOSR
FX This work was supported in part by AFOSR under a task monitored by Dr D.
Smith and also by a grant of HPC time from the DoD HPC Shared Resource
Centers at AFRL and ERDC.
NR 46
TC 18
Z9 19
U1 2
U2 17
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0022-1120
EI 1469-7645
J9 J FLUID MECH
JI J. Fluid Mech.
PD JUN
PY 2014
VL 748
BP 932
EP 956
DI 10.1017/jfm.2014.212
PG 25
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA AI4AW
UT WOS:000336808600040
ER
PT J
AU Friedrich, TL
Vessey, WB
Schuelke, MJ
Mumford, MD
Yammarino, FJ
Ruark, GA
AF Friedrich, Tamara L.
Vessey, William B.
Schuelke, Matthew J.
Mumford, Michael D.
Yammarino, Francis J.
Ruark, Gregory A.
TI Collectivistic leadership and George C. Marshall: A historiometric
analysis of career events
SO LEADERSHIP QUARTERLY
LA English
DT Article
DE Collective leadership; Military leadership; Historiometric methods;
Leadership in teams; Leadership in networks
ID SHARED LEADERSHIP; MEMBER EXCHANGE; TEAM EFFECTIVENESS; PERFORMANCE;
ORGANIZATIONS; PERSPECTIVE; SCIENCE; WORLD; TIES; CONSEQUENCES
AB Many of the prevailing approaches to understanding leadership assume that leadership operates as an individual-level phenomenon, in which one person takes on the role of a leader. However, a number of recently developed leadership models now describe leadership as a shared process. These collectivistic theories present leadership as a dynamic process in which a leader may selectively utilize the skills of followers and distribute elements of the leadership role among these followers as the situation demands. In this study, we conduct an investigation into the viability of core elements of the collectivistic theories through a historiometric analysis of events from the career of a notable leader, George C. Marshall. One hundred and two events from Marshall's career were identified from historical biographies and were then content coded and analyzed with regard to the components of a collectivistic leadership model. The results of this historiometric analysis indicated that there are key antecedents to collectivistic leadership and that the use of this form of leadership can result in positive team outcomes. (C) 2013 Elsevier Inc. All rights reserved.
C1 [Friedrich, Tamara L.] Univ Warwick, Coventry CV4 7AL, W Midlands, England.
[Vessey, William B.; Mumford, Michael D.] Univ Oklahoma, Norman, OK 73019 USA.
[Schuelke, Matthew J.] Air Force Res Lab, Wright Patterson AFB, OH USA.
[Yammarino, Francis J.] SUNY Binghamton, Binghamton, NY 13902 USA.
[Ruark, Gregory A.] US Army Res Inst, Arlington, VA USA.
RP Friedrich, TL (reprint author), Univ Warwick, Warwick Business Sch, Coventry CV4 7AL, W Midlands, England.
EM tamara.friedrich@wbs.ac.uk
NR 90
TC 7
Z9 7
U1 5
U2 26
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1048-9843
EI 1873-3409
J9 LEADERSHIP QUART
JI Leadersh. Q.
PD JUN
PY 2014
VL 25
IS 3
BP 449
EP 467
DI 10.1016/j.leaqua.2013.10.012
PG 19
WC Psychology, Applied; Management
SC Psychology; Business & Economics
GA AI5ER
UT WOS:000336888700003
ER
PT J
AU Sontgerath, JS
Rubal, BJ
DeLorenzo, RA
Morgan, TL
Ward, JA
AF Sontgerath, Joseph S.
Rubal, Bernard J.
DeLorenzo, Robert A.
Morgan, Trent L.
Ward, John A.
TI Variability in intraosseous flush practices of emergency physicians
SO AMERICAN JOURNAL OF EMERGENCY MEDICINE
LA English
DT Article
ID BONE-MARROW; INFUSION RATES; FAT-EMBOLISM; CLINICAL RELEVANCE; VASCULAR
ACCESS; SWINE MODEL; PRESSURE; BLOOD; ECHOCARDIOGRAPHY; SAFETY
AB IncObjective: Intramedullary pressure changes during intraosseous (IO) procedures have been implicated in the intravasation of bone marrow fat and with pain in conscious patients. The objective of this study was to demonstrate inter-provider variability in pressures generated during initial flush procedures.
Methods: IO cannulas were inserted into the proximal tibiae and humeri by study personnel. A second cannula was placed in the mid diaphysis of each bone to record intramedullary pressures. Fifteen emergency physicians performed 60 flushes in random order in two cadavers while flush duration and IO pressure were continuously recorded. Providers were blinded to the flush pressures they generated and the flush techniques of others.
Results: The median IO pressure (IOP) generated by providers was 903 mm Hg (range, 83-2941 mm Hg) and the median flush duration was 5.2 seconds (range, 1.0-13.4 seconds). Significant differences were noted among providers in peak IOP generated (analysis of variance P<.001). Providers were consistent in the forces they generated relative to each other. An inverse, nonlinear relationship was observed between flush duration and the peak IOP generated. Significant differences were noted in intramedullary flush pressures at flush sites within cadavers (analysis of variance P: cadaver #1 P<.001; cadaver #2 P=.012).
Conclusions: The IO compartment pressures generated by physicians demonstrated significant interoperator variability with greater than 35-fold difference in flush forces, and an inverse relationship between intraosseous pressure and flush duration. It may be prudent practice for providers to extend the flush over several seconds, thus limiting maximal pressures. Published by Elsevier Inc.
C1 [Sontgerath, Joseph S.; Morgan, Trent L.] Dept Emergency Med, Ft Sam Houston, TX 78234 USA.
[Rubal, Bernard J.; Ward, John A.] San Antonio Mil Med Ctr, Serv Cardiol, Ft Sam Houston, TX 78234 USA.
[DeLorenzo, Robert A.] US Army, Inst Surg Res, Ft Sam Houston, TX 78234 USA.
RP Sontgerath, JS (reprint author), Mike OCallaghan Fed Med Ctr, Dept Emergency Med, 4700 N Las Vegas Blvd, Nellis Afb, NV 89191 USA.
EM joseph.sontgerath.1@us.af.mil
FU US Army Tele-medicine and Advanced Technology Research Center
FX Funding was provided by the US Army Tele-medicine and Advanced
Technology Research Center.
NR 36
TC 2
Z9 2
U1 0
U2 2
PU W B SAUNDERS CO-ELSEVIER INC
PI PHILADELPHIA
PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA
SN 0735-6757
EI 1532-8171
J9 AM J EMERG MED
JI Am. J. Emerg. Med.
PD JUN
PY 2014
VL 32
IS 6
BP 665
EP 669
DI 10.1016/j.ajem.2014.03.001
PG 5
WC Emergency Medicine
SC Emergency Medicine
GA AI1AK
UT WOS:000336581800035
PM 24725773
ER
PT J
AU Gogineni, S
Rangaswamy, M
Rigling, BD
Nehorai, A
AF Gogineni, Sandeep
Rangaswamy, Muralidhar
Rigling, Brian D.
Nehorai, Arye
TI Ambiguity Function Analysis for UMTS-Based Passive Multistatic Radar
SO IEEE TRANSACTIONS ON SIGNAL PROCESSING
LA English
DT Article
DE Ambiguity function; coherent processing; distributed; multistatic;
passive radar; resolution; UMTS signals
ID CRAMER-RAO BOUNDS; BISTATIC RADAR; MIMO RADAR; SYSTEMS
AB There has been a growing interest in passive radar systems in the research community over the last decade because of the several merits they offer, including ease of deployment, low cost, and non-detectability of the receivers. During the same period, the idea of distributed MIMO radar and its advantages under the coherent and non-coherent operating scenarios has been extensively studied. Keeping these benefits it mind, in this paper, we consider a UMTS-based passive multistatic radar with distributed antennas. We compute the ambiguity profiles of this radar system under both the coherent and non-coherent modes. The non-coherent processing mode improves the target detection performance by obtaining spatially diverse looks of the target. On the other hand, coherent processing enhances the resolution of target localization. We use numerical examples to demonstrate our analytical results.
C1 [Gogineni, Sandeep] Wright State Res Inst, Dayton, OH 45435 USA.
[Rangaswamy, Muralidhar] US Air Force, Res Lab, Dayton, OH 45435 USA.
[Rigling, Brian D.] Wright State Univ, Dept Elect Engn, Dayton, OH 45435 USA.
[Nehorai, Arye] Washington Univ, Preston M Green Dept Elect & Syst Engn, St Louis, MO 63130 USA.
RP Gogineni, S (reprint author), Wright State Res Inst, Dayton, OH 45435 USA.
EM sandeep.gogineni.ctr.in@us.af.mil; muralidhar.rangaswamy@us.af.mil;
brian.rigling@wright.edu; nehorai@ese.wustl.edu
RI Furumoto, Jun-ichi/E-8676-2013
FU Air Force Office of Scientific Research [2311]; AFOSR [FA9550-11-1-0210]
FX M. Rangaswamy was supported by the Air Force Office of Scientific
Research under project 2311. A. Nehorai was supported by AFOSR Grant
FA9550-11-1-0210.
NR 30
TC 10
Z9 11
U1 2
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1053-587X
EI 1941-0476
J9 IEEE T SIGNAL PROCES
JI IEEE Trans. Signal Process.
PD JUN
PY 2014
VL 62
IS 11
BP 2945
EP 2957
DI 10.1109/TSP.2014.2318135
PG 13
WC Engineering, Electrical & Electronic
SC Engineering
GA AH3VF
UT WOS:000336053300017
ER
PT J
AU Hack, DE
Patton, LK
Himed, B
Saville, MA
AF Hack, Daniel E.
Patton, Lee K.
Himed, Braham
Saville, Michael A.
TI Detection in Passive MIMO Radar Networks
SO IEEE TRANSACTIONS ON SIGNAL PROCESSING
LA English
DT Article
DE Passive radar; passive MIMO radar; passive multistatic radar; MIMO
radar; passive source localization
ID WISHART MATRICES; TARGET DETECTION; MOVING TARGETS; SIGNALS;
PERFORMANCE; DOPPLER; SYSTEMS; DELAY; EIGENVALUE; TRACKING
AB This paper addresses target detection in passive multiple-input multiple-output (MIMO) radar networks comprised of non-cooperative transmitters and multichannel receivers. A generalized likelihood ratio test is derived, and approximate test statistic distributions are presented for both hypotheses under common scenario conditions. Analysis and simulation results show that this detector outperforms other passive MIMO radar detectors because it exploits more correlations within the measurement data. This detector is also compared against related detectors for active MIMO radar and passive source localization sensor networks. These comparisons reveal that passive MIMO radar detection performance varies between active MIMO radar and passive source localization detection performance as a function of direct-path signal quality. Therefore, passive MIMO radar unifies active MIMO radar and passive source localization sensor networks in a common theoretical framework.
C1 [Hack, Daniel E.; Patton, Lee K.] Matrix Res, Dayton, OH 45432 USA.
[Hack, Daniel E.] US Air Force, Inst Technol, Dept Elect & Comp Engn, Wright Patterson AFB, OH 45433 USA.
[Himed, Braham] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Saville, Michael A.] Wright State Univ, Dept Elect Engn, Fairborn, OH 45435 USA.
RP Hack, DE (reprint author), Matrix Res, Dayton, OH 45432 USA.
EM dan.hack@matrixresearch.com; lee.patton@matrixresearch.com;
braham.himed@wpafb.af.mil; michael.saville@wright.edu
RI Furumoto, Jun-ichi/E-8676-2013
FU RNET; Air Force Research Laboratory [FA8650-10-D-1750]
FX This work was supported in part by a sub-contract with RNET for research
sponsored by the Air Force Research Laboratory under contract
FA8650-10-D-1750.
NR 35
TC 22
Z9 22
U1 0
U2 26
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1053-587X
EI 1941-0476
J9 IEEE T SIGNAL PROCES
JI IEEE Trans. Signal Process.
PD JUN
PY 2014
VL 62
IS 11
BP 2999
EP 3012
DI 10.1109/TSP.2014.2319776
PG 14
WC Engineering, Electrical & Electronic
SC Engineering
GA AH3VF
UT WOS:000336053300021
ER
PT J
AU Hack, DE
Patton, LK
Himed, B
Saville, MA
AF Hack, Daniel E.
Patton, Lee K.
Himed, Braham
Saville, Michael A.
TI Centralized Passive MIMO Radar Detection Without Direct-Path Reference
Signals
SO IEEE TRANSACTIONS ON SIGNAL PROCESSING
LA English
DT Article
DE Passive radar; passive MIMO radar; passive multistatic radar; passive
source localization
ID WISHART MATRICES; BISTATIC RADAR; TARGET DETECTION; PERFORMANCE;
EIGENVALUE; DOPPLER
AB This work addresses the problem of target detection in passive multiple-input multiple-output (MIMO) radar networks without utilization of direct-path reference signals. A generalized likelihood ratio test for this problem is derived, and the distribution of the test statistic is identified under both hypotheses. Equivalence is established between passive MIMO radar networks without references and passive source localization networks. Numerical examples demonstrate important characteristics of the detector, namely, the asymmetric contributions to detection performance from transmitters and receivers, and non-coherent integration gain as a function of signal length. The ambiguity properties of this detector are also investigated, and it is shown that the salient ambiguities can be explained in terms of the time-difference of arrival, frequency-difference of arrival, and angle-of-arrival of the target signals.
C1 [Hack, Daniel E.; Patton, Lee K.] Matrix Res, Dayton, OH 45432 USA.
[Hack, Daniel E.] US Air Force, Inst Technol, Dept Elect & Comp Engn, Wright Patterson AFB, OH 45433 USA.
[Himed, Braham] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Saville, Michael A.] Wright State Univ, Dept Elect Engn, Fairborn, OH 45435 USA.
RP Hack, DE (reprint author), Matrix Res, Dayton, OH 45432 USA.
EM dan.hack@matrixresearch.com; lee.patton@matrixresearch.com;
braham.himed@wpafb.af.mil; michael.saville@wright.edu
RI Furumoto, Jun-ichi/E-8676-2013
FU RNET; Air Force Research Laboratory [FA8650-10-D-1750]
FX This work was supported in part by a sub-contract with RNET for research
sponsored by the Air Force Research Laboratory under contract
FA8650-10-D-1750.
NR 26
TC 15
Z9 16
U1 0
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1053-587X
EI 1941-0476
J9 IEEE T SIGNAL PROCES
JI IEEE Trans. Signal Process.
PD JUN
PY 2014
VL 62
IS 11
BP 3013
EP 3023
DI 10.1109/TSP.2014.2320462
PG 11
WC Engineering, Electrical & Electronic
SC Engineering
GA AH3VF
UT WOS:000336053300022
ER
PT J
AU Linares, R
Jah, MK
Crassidis, JL
Leve, FA
Kelecy, T
AF Linares, Richard
Jah, Moriba K.
Crassidis, John L.
Leve, Fred A.
Kelecy, Tom
TI Astrometric and photometric data fusion for inactive space object mass
and area estimation
SO ACTA ASTRONAUTICA
LA English
DT Article
DE Mass estimation; Orbit determination; Unscented Kalman filter
ID ASTEROID LIGHTCURVE INVERSION; OPTIMIZATION METHODS; ATTITUDE ESTIMATION
AB This paper presents a new method to determine the mass of an inactive space object from the fusion of photometric and astrometric data. Typically, the effect of solar radiation pressure is used to determine area-to-mass ratio for space objects from angles observations. The area-to-mass ratio of a space object can greatly affect its orbital dynamics. As a consequence, angles data are sensitive to this quantity. On the other hand, photometric data is not sensitive to mass but is a strong function of the albedo-area and the rotational dynamics of the space object. The albedo-area can be used to determine the amount of energy reflected from solar radiation. Since these two data types are sensitive to albedo-area and area-to-mass, then through fusion of photometric data with angles data it is possible to determine the area and mass of a space object. This work employs an unscented Kalman filter to estimate rotational and translational states, area and mass of an inactive space object. Mass is not observable with only angles data or only photometric data alone, but it is shown in this work that with the two combined data types mass can be recovered. Recovery of space object characteristics and attitude and orbit trajectories with sufficient accuracy is demonstrated in this paper via simulation. (C) 2013 IAA. Published by Elsevier Ltd. All rights reserved.
C1 [Linares, Richard; Crassidis, John L.] SUNY Buffalo, Amherst, NY 14260 USA.
[Jah, Moriba K.; Leve, Fred A.] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
[Kelecy, Tom] Boeing Co, Colorado Springs, CO 80919 USA.
RP Linares, R (reprint author), SUNY Buffalo, Amherst, NY 14260 USA.
EM linares2@buffalo.edu; AFRL.RVSV@Kirtland.af.mil; johnc@buffalo.edu;
AFRL.RVSV@Kirtland.af.mil; thomas.m.kelecy@boeing.com
OI Jah, Moriba/0000-0003-1109-0374
NR 18
TC 3
Z9 3
U1 1
U2 4
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0094-5765
EI 1879-2030
J9 ACTA ASTRONAUT
JI Acta Astronaut.
PD JUN-JUL
PY 2014
VL 99
BP 1
EP 15
DI 10.1016/j.actaastro.2013.10.018
PG 15
WC Engineering, Aerospace
SC Engineering
GA AG7QD
UT WOS:000335612000001
ER
PT J
AU Wang, F
Fu, B
Luo, H
Staggs, S
Mirshams, RA
Cooper, WL
Park, SY
Kim, MJ
Hartley, C
Lu, H
AF Wang, F.
Fu, B.
Luo, H.
Staggs, S.
Mirshams, R. A.
Cooper, W. L.
Park, S. Y.
Kim, M. J.
Hartley, C.
Lu, H.
TI Characterization of the Grain-Level Mechanical Behavior of Eglin Sand by
Nanoindentation
SO EXPERIMENTAL MECHANICS
LA English
DT Article
DE Sand; Nanoindentation; Young's modulus; Hardness; Finite element method;
Fracture toughness
ID FINITE-ELEMENT SIMULATION; INDENTATION EXPERIMENTS; GRANULAR-MATERIALS;
ELASTIC-MODULUS; HIGH-PRESSURES; STRAIN-RATE; MESOSCALE; HARDNESS;
COMPRESSION; TESTS
AB Characterization was made on the structure and grain-level mechanical behavior of Eglin sand (Quikrete #1961 sand quarried in Pensacola, FL). The as-received assorted sand was sorted to six grain sizes: 0.60 mm, 0.50 mm, 0.42 mm, 0.30 mm, 0.212 mm, and 0.15 mm. The sand chemical constituents and crystalline structures were determined using energy dispersive X-ray spectroscopy, X-ray diffraction and transmission electron microscopy. The Young's modulus and hardness were determined using nanoindentation with a Berkovich tip, and the fracture toughness was measured using a cube-corner tip. The median Young's modulus, hardness and fracture toughness were determined as 90.4 GPa, 12.8 GPa and 2.32 MPaa <...m(0.5), respectively. The mechanical properties were analyzed statistically and the parameters of the Weibull distribution were determined. The grains show highly ductile behavior under nanoindentation due to confinement by high pressure induced by Berkovich tip. An inverse problem solving approach using finite element method (FEM) with the consideration of the Ramberg-Osgood model was used to determine the stress-strain relationship for individual sand grains.
C1 [Wang, F.; Fu, B.; Staggs, S.] Oklahoma State Univ, Sch Mech & Aerosp Engn, Stillwater, OK 74078 USA.
[Wang, F.; Luo, H.; Lu, H.] Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 USA.
[Mirshams, R. A.] Univ N Texas, Dept Engn Technol, Denton, TX 76203 USA.
[Cooper, W. L.] Kirkland Air Force Base, Air Force Res Lab, Albuquerque, NM 87117 USA.
[Park, S. Y.] Samsung Elect Co, Hwasung City 445701, Gyeonggi Do, South Korea.
[Kim, M. J.] Univ Texas Dallas, Dept Mat Sci & Engn, Dallas, TX 75080 USA.
[Hartley, C.] El Arroyo Enterprises LLC, Sedona, AZ 86336 USA.
RP Lu, H (reprint author), Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 USA.
EM hongbing.lu@utdallas.edu
RI Lu, Hongbing/A-1312-2011
FU ONR MURI BAA [10-026]; DOE NEUP [09-818]; AFOSR DEPSCoR
[FA9550-08-1-0328]; NSF [CMMI-0619803, CMMI-1031829, DMR-0907291,
CMMI-1132174, ECCS-1307997]; UNT Office of Sponsored Research; State of
Texas ETF
FX We acknowledge the support of ONR MURI BAA 10-026, DOE NEUP 09-818,
AFOSR DEPSCoR FA9550-08-1-0328, and NSF under CMMI-0619803,
CMMI-1031829, DMR-0907291, CMMI-1132174, and ECCS-1307997. Lu also
thanks the Louis A. Beecherl Jr. Chair for additional support. Mirshams
acknowledges partial support from UNT Office of Sponsored Research. Park
and Kim acknowledge the support from the State of Texas ETF.
NR 61
TC 2
Z9 2
U1 2
U2 22
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
EI 1741-2765
J9 EXP MECH
JI Exp. Mech.
PD JUN
PY 2014
VL 54
IS 5
BP 871
EP 884
DI 10.1007/s11340-013-9845-z
PG 14
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
Characterization & Testing
SC Materials Science; Mechanics
GA AG9TG
UT WOS:000335762100014
ER
PT J
AU Isaacs, R
AF Isaacs, Ron
TI A Geoscience and Remote Sensing Research Paradigm in Industry
SO IEEE GEOSCIENCE AND REMOTE SENSING MAGAZINE
LA English
DT Article
AB With a 37-year history of cutting-edge research in the geosciences and environmental risk, Atmospheric and Environmental Research (AER) has grown its expertise from an initial focus on atmospheric photochemistry to a broad set of capabilities in remote sensing, meteorology, oceanography, space weather, and climate science to meet the needs of government agencies, universities, and corporations. In this article, we describe our successful paradigm for highest-quality geosciences and remote sensing research performed in the private sector. Our approach is firmly grounded in fundamental basic research, starting with an understanding the underlying physics and then applying that knowledge to remote sensing systems and how they provide information on the state of the geophysical system. From that perspective we discuss the use of those data to initialize weather and environmental nowcast and forecast models and to develop operational ground systems which utilize and exploit the data. In turn we discuss the fundamental research, major government programs supported by those research underpinnings, space weather R&D, our sensor simulation testbed capability, our physical oceanography program, our unique software development process, and finally the transition from research into commercial products.
C1 [Isaacs, Ron] Atmospher & Environm Res, Lexington, MA 02421 USA.
[Isaacs, Ron] US Air Force, Tullahoma, TN USA.
RP Isaacs, R (reprint author), Atmospher & Environm Res, Lexington, MA 02421 USA.
NR 35
TC 0
Z9 0
U1 0
U2 0
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 2168-6831
J9 IEEE GEOSC REM SEN M
JI IEEE Geosci. Remote Sens. Mag.
PD JUN
PY 2014
VL 2
IS 2
BP 86
EP 98
DI 10.1109/MGRS.2014.2317975
PG 13
WC Geochemistry & Geophysics; Remote Sensing; Imaging Science &
Photographic Technology
SC Geochemistry & Geophysics; Remote Sensing; Imaging Science &
Photographic Technology
GA V45PU
UT WOS:000209829300016
ER
PT J
AU Pitz, GA
Sandoval, AJ
Tafoya, TB
Klennert, WL
Hostutler, DA
AF Pitz, Greg A.
Sandoval, Andrew J.
Tafoya, Tiffany B.
Klennert, Wade L.
Hostutler, David A.
TI Pressure broadening and shift of the rubidium D-1 transition and
potassium D-2 transitions by various gases with comparison to other
alkali rates
SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
LA English
DT Article
DE Pressure broadening; Pressure shift; Potassium; Rubidium; Laser
absorption; Spectroscopy; DPAL
ID NOBLE-GASES; RESONANCE LINES; FOREIGN GASES; 1ST DOUBLET; CESIUM; N-2;
CH4; ASYMMETRY; N-C4H10; HELIUM
AB The pressure broadening and shift rates for the K D-2 (4(2)P(3/2)<- 4(2)S(1/2)) transition with N-2, CH4, C2H6, C3H8, n-C4H10, and the noble gases were obtained for pressures up to 80 Torr and at a temperature of 55 degrees C by means of laser absorption spectroscopy. Additionally, the broadening and shift rates for the Rb D-1 (5(2)P(1/2) <- 5(2)S(1/2)) transition for He, CH4, C2H6, C3H8, and n-C4H10 were obtained using the same techniques and under similar conditions. The K D-2 collisional broadening rate, gamma(L), for He, Ne, Ar, Kr, Xe, N-2, CH4, C2H6, C3H8, and n-C4H10 are 19.84, 8.88, 18.65, 19.17, 22.19, 18.98, 27.78, 27.60, 27.70, and 33.48 MHz/Torr, respectively. The uncertainty in the broadening rates is typically less than 2.1%. The corresponding pressure induced shift rates, a are 0.52, -2.06, -5.52, -5.42, -7.01, -5.66, -8.38, -8.04, -9.22, and -9.37 MHz/Torr with an uncertainty of less than 1.8%. The Rb D1 collisional broadening rates for He, CH4, C2H6, C3H8, and n-C4H10 are 20.80, 32.78, 30.49, 33.05, and 29.61 with uncertainties typically less than 2.2%. The collisional shift rates for the Rb D-1 transition are 5.80, -6.96, -7.88, -8.61, and -9.43 with uncertainties on the order of 1.1%. A comparison with the other alkali broadening and shift cross-sections is presented. Published by Elsevier Ltd.
C1 [Pitz, Greg A.; Sandoval, Andrew J.; Tafoya, Tiffany B.; Hostutler, David A.] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
[Klennert, Wade L.] Boeing Co, Albuquerque, NM 87109 USA.
RP Pitz, GA (reprint author), Air Force Res Lab, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA.
EM AFRL.RDLC.SCI.org@kirtland.af.mil
OI Tafoya, Tiffany/0000-0002-9203-6232
FU Air Force Office of Scientific Research; High Energy Laser Joint
Technology Office
FX Support for this work from the Air Force Office of Scientific Research
and the High Energy Laser Joint Technology Office is gratefully
acknowledged. We also want to thank Billy Pike and Don Stalnaker for
their help in the laboratory, as well as Chris Rice and Glen Perram of
the Air Force Institute of Technology for the use of the laser to study
the K D2 transition.
NR 30
TC 6
Z9 7
U1 1
U2 25
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0022-4073
EI 1879-1352
J9 J QUANT SPECTROSC RA
JI J. Quant. Spectrosc. Radiat. Transf.
PD JUN
PY 2014
VL 140
BP 18
EP 29
DI 10.1016/j.jqsrt.2014.01.024
PG 12
WC Optics; Spectroscopy
SC Optics; Spectroscopy
GA AG0JJ
UT WOS:000335101500003
ER
PT J
AU Misak, HE
Mall, S
AF Misak, H. E.
Mall, S.
TI Investigation into microstructure of carbon nanotube multi-yarn
SO CARBON
LA English
DT Article
ID FATIGUE; FIBERS; BEHAVIOR; FILMS; WIRES
AB Structural analysis at the nano and micro scale was performed on a carbon nanotube (CNT) multi-yarn. The yarns were made by a process of drawing CNTs into a ribbon and twisting the ribbon into a yarn. Scanning electron microscopy (SEM) was used to view the exterior of the yarn. Polarized microscopy was used to examine details of the 1-yarn, and it also identified ribbon-ribbon boundaries. Further examination of interior structure was done by NanoCT scans which showed that folding of the ribbons had occurred causing complicated structures. The interior folding was found by milling into the yarn with a focus ion beam gun (FIB) and imaging with SEM. These different methods thus provided various microstructural details (structure, ribbon-ribbon boundary, folding and void fraction) of CNT multi-yarn which could be used to compare with other yams fabricated with different procedures/sources as well to provide parameters for analytical tools. Further, these microstructural details can be related to macro mechanical and physical properties. Published by Elsevier Ltd.
C1 [Misak, H. E.; Mall, S.] US Air Force, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
[Misak, H. E.] Wichita State Univ, Dept Mech Engn, Wichita, KS 67260 USA.
RP Mall, S (reprint author), US Air Force, Inst Technol, Dept Aeronaut & Astronaut, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM Shankar.Mall@afit.edu
NR 14
TC 8
Z9 8
U1 5
U2 53
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0008-6223
EI 1873-3891
J9 CARBON
JI Carbon
PD JUN
PY 2014
VL 72
BP 321
EP 327
DI 10.1016/j.carbon.2014.02.012
PG 7
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA AE5EM
UT WOS:000334010600037
ER
PT J
AU Melouk, SH
Fontem, BA
Waymire, E
Hall, S
AF Melouk, Sharif H.
Fontem, Belleh A.
Waymire, Emily
Hall, Shane
TI Stochastic resource allocation using a predictor-based heuristic for
optimization via simulation
SO COMPUTERS & OPERATIONS RESEARCH
LA English
DT Article
DE Optimization via simulation; Heuristics; Military applications; Resource
allocation
ID GLOBAL OPTIMIZATION; BUDGET ALLOCATION; GENETIC ALGORITHM; AERIAL
VEHICLES
AB Some combinatorial stochastic resource allocation problems lack algebraically defined objective functions and hence require optimization via simulation as a mechanism for obtaining good solutions. For this class of problems, we propose a new predictor-based heuristic that uses a distance criterion to perform the solution search. To demonstrate our solution approach, we apply this heuristic to the problem of selecting the proper design configuration of an unmanned aerial system (UAS) fleet so as to maximize mission effectiveness. We compare our approach to black box optimization via simulation approaches (two tabu search-based procedures and a greedy heuristic) and glean both methodological and practical insights. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Melouk, Sharif H.; Fontem, Belleh A.] Univ Alabama, Dept Informat Syst Stat & Management Sci, Tuscaloosa, AL 35487 USA.
[Waymire, Emily] Naval Surface Warfare Ctr, Panama City Div, Panama City, FL 32407 USA.
[Hall, Shane] US Air Force, Inst Technol, Dept Operat Sci, Wright Patterson AFB, OH 45433 USA.
RP Melouk, SH (reprint author), Univ Alabama, Dept Informat Syst Stat & Management Sci, Tuscaloosa, AL 35487 USA.
EM smelouk@cba.ua.edu
NR 29
TC 1
Z9 3
U1 0
U2 16
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0305-0548
EI 1873-765X
J9 COMPUT OPER RES
JI Comput. Oper. Res.
PD JUN
PY 2014
VL 46
BP 38
EP 48
DI 10.1016/j.cor.2013.12.010
PG 11
WC Computer Science, Interdisciplinary Applications; Engineering,
Industrial; Operations Research & Management Science
SC Computer Science; Engineering; Operations Research & Management Science
GA AE3IQ
UT WOS:000333870600004
ER
PT J
AU Rebane, A
Drobizhev, M
Makarov, NS
Wicks, G
Wnuk, P
Stepanenko, Y
Haley, JE
Krein, DM
Fore, JL
Burke, AR
Slagle, JE
McLean, DG
Cooper, TM
AF Rebane, Aleksander
Drobizhev, Mikhail
Makarov, Nikolay S.
Wicks, Geoffrey
Wnuk, Pawel
Stepanenko, Yuriy
Haley, Joy E.
Krein, Douglas M.
Fore, Jennifer L.
Burke, Aaron R.
Slagle, Jonathan E.
McLean, Daniel G.
Cooper, Thomas M.
TI Symmetry Breaking in Platinum Acetylide Chromophores Studied by
Femtosecond Two-Photon Absorption Spectroscopy
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID EXCITED-STATE ABSORPTION; NONLINEAR-OPTICAL PROPERTIES; PT-ETHYNYL
COMPOUND; POLY-YNES; CHARGE-TRANSFER; COMPLEX; RESONANCE; SERIES;
ENHANCEMENT; DERIVATIVES
AB We study instantaneous two-photon absorption (2PA) in a series of nominally quasi-centrosymmetric trans-bis(tributylphosphine)-bis-(4-((9,9-diethyl-7- ethynyl-9H-fluoren-2-yl) ethynyl)-R)-platinum complexes, where 11 different substituents, R = N(phenyl)(2)(NPh2), NH2, OCH3, t-butyl, CH3 H, F, CF3, CN, benzothiazole, and NO2, represent a range of electron-donating (ED) and electron-withdrawing (EW) strengths, while the Pt core acts as a weak ED group. We measure the 2PA cross section in the 540-810 nm excitation wavelength range by complementary femtosecond two-photon excited fluorescence (2PEF) and nonlinear transmission (NLT) methods and compare the obtained values to those of the Pt-core chromophore and the corresponding noncentrosymmetric side group (ligand) chromophores. Peak 2PA cross sections of neutral and ED-substituted Pt complexes occur at S-0 -> S-n transitions to higher energy states, above the lowest-energy So -> S, transition, and the corresponding values increase systematically with increasing ED strength, reaching maximum value, sigma(2) similar to 300 GM (1 GM = 10(-50) cm(4) s), for R = NPh2. At transition energies overlapping with the lowest-energy S-0 -> S-1 transition in the one-photon absorption (IPA) spectrum, the same neutral and ED-substituted Pt complexes show weak 2PA, sigma(2) < 30-100 GM, which is in agreement with the nearly quadrupolar structure of these systems. Surprisingly, EW-substituted Pt complexes display a very different behavior, where the peak 2PA of the S-0 -> S-1, transition gradually increases with increasing EW strength, reaching values sigma(2) = 700 GM for R = NO2, while in the So -> S-n transition region the peak 2PEF cross section decreases. We explained this effect by breaking of inversion symmetry due to conformational distortions associated with low energy barrier for ground-state rotation of the ligands. Our findings are corroborated by theoretical calculations that show large increase of the permanent electric dipole moment change in the S-0 -> S-1 transition when ligands with strong EW substituents are twisted by 90 degrees relative to the planar chromophore. Our NLT results in the S-0 -> S-1, transition region are quantitatively similar to those obtained from the 2PEF measurement. However, at higher transition energy corresponding to S-0 -> S-n transition region, the NLT method yields effective multiphoton absorption stronger than the 2PEF measurement in the same systems. Such enhancement is observed in all Pt complexes as well as in all ligand chromophores studied, and we tentatively attribute this effect to nearly saturated excited-state absorption (ESA), which may occur if 2PA from the ground state is immediately followed by strongly allowed IPA to higher excited states.
C1 [Rebane, Aleksander; Drobizhev, Mikhail; Makarov, Nikolay S.; Wicks, Geoffrey] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA.
[Rebane, Aleksander] NICPB, EE-12618 Tallinn, Estonia.
[Wnuk, Pawel] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland.
[Haley, Joy E.; Krein, Douglas M.; Fore, Jennifer L.; Burke, Aaron R.; Slagle, Jonathan E.; McLean, Daniel G.; Cooper, Thomas M.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Krein, Douglas M.] Gen Dynam Informat Technol, Dayton, OH 45431 USA.
[Fore, Jennifer L.] SOCHE Student Res Program, Dayton, OH 45420 USA.
[Slagle, Jonathan E.; McLean, Daniel G.] Sci Applicat Int Corp, Dayton, OH 45431 USA.
RP Rebane, A (reprint author), Montana State Univ, Dept Phys, Bozeman, MT 59717 USA.
EM rebane@physics.montana.edu; Thomas.Cooper.13@us.af.mil
RI Wnuk, Pawel/A-2433-2014
FU Air Force Research Laboratory, Materials and Manufacturing Directorate
(AFRL/RX) [F33615-99-C-5415, F33615-03-D-5408, F33615-03-D-5421,
FA9550-09-1-0219]
FX We thank the support of this work by Air Force Research Laboratory,
Materials and Manufacturing Directorate (AFRL/RX) Contracts
F33615-99-C-5415 for D.G.M.; F33615-03-D-5408 for D.M.K. and A.R.B.;
F33615-03-D-5421 for J.E.H. and J.E.S.; and FA9550-09-1-0219 for A.R,
G.W, and M.D.
NR 49
TC 15
Z9 15
U1 7
U2 44
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD MAY 29
PY 2014
VL 118
IS 21
BP 3749
EP 3759
DI 10.1021/jp5009658
PG 11
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AI3OR
UT WOS:000336772300005
ER
PT J
AU Maschmann, MR
Ehlert, GJ
Dickinson, BT
Phillips, DM
Ray, CW
Reich, GW
Baur, JW
AF Maschmann, Matthew R.
Ehlert, Gregory J.
Dickinson, Benjamin T.
Phillips, David M.
Ray, Cody W.
Reich, Greg W.
Baur, Jeffery W.
TI Bioinspired Carbon Nanotube Fuzzy Fiber Hair Sensor for Air-Flow
Detection
SO ADVANCED MATERIALS
LA English
DT Article
ID ARRAYS; DESIGN
AB Artificial hair sensors consisting of a piezoresistive carbon-nanotube-coated glass fiber embedded in a microcapillary are assembled and characterized. Individual sensors resemble a hair plug that may be integrated in a wide range of host materials. The sensors demonstrate an air-flow detection threshold of less than 1 m/s with a piezoresistive sensitivity of 1.3% per m/s air-flow change.
C1 [Maschmann, Matthew R.; Ehlert, Gregory J.; Baur, Jeffery W.] Air Force Res Lab, Mat & Mfg Directorate, AFRL RX, Wright Patterson AFB, OH 45433 USA.
[Maschmann, Matthew R.] Univ Missouri, Dept Mech & Aerosp Engn, Columbia, MO 65211 USA.
[Phillips, David M.] Universal Technol Corp, Beavercreek, OH 45424 USA.
[Dickinson, Benjamin T.] Air Force Res Lab, Munit Directorate, AFRL RW, Eglin AFB, FL 32542 USA.
[Phillips, David M.; Ray, Cody W.; Reich, Greg W.] Air Force Res Lab, Aerosp Syst Directorate, AFRL RQ, Wright Patterson AFB, OH 45433 USA.
RP Baur, JW (reprint author), Air Force Res Lab, Mat & Mfg Directorate, AFRL RX, Wright Patterson AFB, OH 45433 USA.
EM Jeffery.Baur@us.af.mil
OI Maschmann, Matthew/0000-0002-0740-6228
FU Air Force Office of Scientific Research (AFOSR)
FX The authors gratefully acknowledge financial support from the Air Force
Office of Scientific Research (AFOSR), Dr. Byung-Lip (Les) Lee, Program
Manager, and Corey Kondash for assistance with sensor fabrication and
nanoindentation data collection.
NR 26
TC 14
Z9 14
U1 9
U2 57
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0935-9648
EI 1521-4095
J9 ADV MATER
JI Adv. Mater.
PD MAY 28
PY 2014
VL 26
IS 20
BP 3230
EP +
DI 10.1002/adma.201305285
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA AI6QD
UT WOS:000336999800006
PM 24665067
ER
PT J
AU Sheikholeslami, S
Pandey, RB
Dragneva, N
Floriano, W
Rubel, O
Barr, SA
Kuang, ZF
Berry, R
Naik, R
Farmer, B
AF Sheikholeslami, Somayyeh
Pandey, R. B.
Dragneva, Nadiya
Floriano, Wely
Rubel, Oleg
Barr, Stephen A.
Kuang, Zhifeng
Berry, Rajiv
Naik, Rajesh
Farmer, Barry
TI Binding of solvated peptide (EPLQLKM) with a graphene sheet via
simulated coarse-grained approach
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID FORCE-FIELD; PROTEIN STRUCTURES; AMINO-ACIDS; POTENTIALS; DYNAMICS;
PALLADIUM; SURFACES; WATER; GOLD
AB Binding of a solvated peptide A1 (E-1 P-2 L-3 (4)Q L-5 K-6 M-7) with a graphene sheet is studied by a coarse-grained computer simulation involving input from three independent simulated interaction potentials in hierarchy. A number of local and global physical quantities such as energy, mobility, and binding profiles and radius of gyration of peptides are examined as a function of temperature (T). Quantitative differences (e. g., the extent of binding within a temperature range) and qualitative similarities are observed in results from three simulated potentials. Differences in variations of both local and global physical quantities suggest a need for such analysis with multiple inputs in assessing the reliability of both quantitative and qualitative observations. While all three potentials indicate binding at low T and unbinding at high T, the extent of binding of peptide with the temperature differs. Unlike un-solvated peptides (with little variation in binding among residues), solvation accentuates the differences in residue binding. As a result the binding of solvated peptide at low temperatures is found to be anchored by three residues, E-1, (4)Q, and K-6 (different from that with the un-solvated peptide). Binding to unbinding transition can be described by the variation of the transverse (with respect to graphene sheet) component of the radius of gyration of the peptide (a potential order parameter) as a function of temperature. (C) 2014 AIP Publishing LLC.
C1 [Sheikholeslami, Somayyeh; Pandey, R. B.] Univ So Mississippi, Dept Phys & Astron, Hattiesburg, MS 39406 USA.
[Dragneva, Nadiya; Floriano, Wely; Rubel, Oleg] Thunder Bay Reg Res Inst, Thunder Bay, ON P7B 5E1, Canada.
[Dragneva, Nadiya; Floriano, Wely; Rubel, Oleg] Lakehead Univ, Thunder Bay, ON P7B 5E1, Canada.
[Barr, Stephen A.; Kuang, Zhifeng; Berry, Rajiv; Naik, Rajesh; Farmer, Barry] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Sheikholeslami, S (reprint author), Univ So Mississippi, Dept Phys & Astron, Hattiesburg, MS 39406 USA.
FU Air Force Research Laboratory [GR04691]; NSERC [386018-2010]
FX This work is supported by the Air Force Research Laboratory (GR04691).
N.D. and O.R. would like to acknowledge NSERC Discovery grant program
(386018-2010). We thank Diana Lovejoy for reading the paper and
corrections.
NR 36
TC 0
Z9 0
U1 4
U2 31
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD MAY 28
PY 2014
VL 140
IS 20
AR 204901
DI 10.1063/1.4876716
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AI4KA
UT WOS:000336832900062
PM 24880319
ER
PT J
AU Carter, JLW
Kuper, MW
Uchic, MD
Mills, MJ
AF Carter, Jennifer L. W.
Kuper, Michael W.
Uchic, Michael D.
Mills, Michael J.
TI Characterization of localized deformation near grain boundaries of
superalloy Rene-104 at elevated temperature
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Nickel-based superalloy; Rene-104; Creep; Digital image correlation;
Grain boundary sliding
ID SCANNING-ELECTRON-MICROSCOPY; CREEP DEFORMATION; QUANTITATIVE SMALL;
MAGNIFICATIONS; MECHANISMS; SINGLE
AB in situ surface deformation measurement techniques were applied to characterize strain localization sites in nickel-based superalloys when tested under constant load at 700 degrees C. Deformation maps were coupled with electron backscatter diffraction (EBSD) measurement of grain location and orientation to correlate localization sites with underlying surface microstructure. Superalloy Rene-104 was heat treated and quenched to create two microstructures with similar grain sizes but different grain boundary character: the standard microstructure had microscopically planar grain boundaries, and the other microstructure had serrated grain boundaries. Analysis of full field strain maps calculated from in situ scanning electron microscopy (SEM) images indicated distinct differences in strain localization as a function of total strain for the two microstructures. The standard microstructure showed very little intra-granular strain accumulation, and annealing twin boundaries played an important role in strain localization sites, whereas the serrated microstructure experienced strain accumulation more evenly throughout the microstructure. Grain boundary sliding (GBS) was observed in both microstructures, but the development of serrated grain boundaries significantly decreased the contribution of this mechanism to the overall strain accommodation from 20% to 14% of the total plastic strain being accommodated by GBS. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Carter, Jennifer L. W.; Kuper, Michael W.; Mills, Michael J.] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43202 USA.
[Uchic, Michael D.] Air Force Res Lab, Mat & Mfg Directorate, AFRL RXCM, Wright Patterson AFB, OH 45433 USA.
RP Carter, JLW (reprint author), Case Western Reserve Univ, Dept Mat Sci & Engn, 10900 Euclid Ave, Cleveland, OH 44106 USA.
EM jennifer.walley@gmail.com
RI Mills, Michael/I-6413-2013; Carter, Jennifer/A-3241-2013
OI Carter, Jennifer/0000-0001-6702-729X
FU Air Force Research Laboratory (AFRL) STW-21 program [FA9550-09-1-0014];
Aimee Price of The Ohio State University Institute for Materials
Research Nanotechnology West Laboratory
FX Funding was provided by the Air Force Research Laboratory (AFRL) STW-21
program FA9550-09-1-0014. Speckle patterning was conducted with support
from Aimee Price of The Ohio State University Institute for Materials
Research Nanotechnology West Laboratory. Thanks are extended to Dr.
William Clark and Dr. Peter Anderson of The Ohio State University,
respectively, for discussions associated with describing of grain
boundary misorientations and the comprehensive analysis of GBS events.
NR 34
TC 7
Z9 7
U1 4
U2 31
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
EI 1873-4936
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD MAY 27
PY 2014
VL 605
BP 127
EP 136
DI 10.1016/j.msea.2014.03.048
PG 10
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA AH7VE
UT WOS:000336342600016
ER
PT J
AU Lukishova, SG
Winkler, JM
Bissell, LJ
AF Lukishova, Svetlana G.
Winkler, Justin M.
Bissell, Luke J.
TI Quantum Dot Fluorescence in Photonic Bandgap Glassy Cholesteric Liquid
Crystal Structures: Microcavity Resonance under CW-Excitation,
Antibunching and Decay Time
SO MOLECULAR CRYSTALS AND LIQUID CRYSTALS
LA English
DT Article
DE microcavity resonance; Quantum dot fluorescence decay; antibunching;
lasing in cholesteric liquid crystals
ID CIRCULARLY-POLARIZED EMISSION; DYE MOLECULE FLUORESCENCE; SEMICONDUCTOR
NANOCRYSTALS; HIGH-POWER; STOP BAND; HOST; GAP
AB Nanocrystal quantum dot (NQD) fluorescence in 1-D glassy cholesteric liquid crystal host is investigated: (1) Microcavity resonance is obtained under cw-excitation demonstrating coupling between NQD fluorescence and a cholesteric microcavity. Observed at a band edge of a photonic stopband, this resonance has circular polarization due to microcavity chirality with 4.9times intensity enhancement in comparison with polarization of the opposite handedness. (2) Photon antibunching of a single NQD in a similar microcavity was observed. (3) Fluorescence decay time constants were measured at different excitation powers. These results are important in developing cholesteric lasers and single-photon sources for secure quantum communication.
C1 [Lukishova, Svetlana G.] Univ Rochester, Inst Opt, Rochester, NY 14627 USA.
[Winkler, Justin M.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA.
[Bissell, Luke J.] US Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Lukishova, SG (reprint author), Univ Rochester, Inst Opt, 275 Hutchison Rd,Wilmot Bldg, Rochester, NY 14627 USA.
EM sluk@lle.rochester.edu
FU NSF [ECS-0420888, EHR-0633621, EHR-0920500]; DoD SMART fellowship; NASA
STR fellowship
FX We thank K. Marshall for access to the LC clean room of the Laboratory
for Laser Energetics. This work was supported by the NSF (ECS-0420888,
EHR-0633621 and EHR-0920500). L.B. was supported by the DoD SMART
fellowship. J.W. is supported by a NASA STR fellowship.
NR 32
TC 2
Z9 2
U1 1
U2 12
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 1542-1406
EI 1563-5287
J9 MOL CRYST LIQ CRYST
JI Mol. Cryst. Liquid Cryst.
PD MAY 24
PY 2014
VL 595
IS 1
SI SI
BP 98
EP 105
DI 10.1080/15421406.2014.917795
PG 8
WC Crystallography
SC Crystallography
GA AQ1RO
UT WOS:000342558900013
ER
PT J
AU Rumi, M
Tondiglia, VP
Natarajan, LV
White, TJ
Bunning, TJ
AF Rumi, Mariacristina
Tondiglia, Vincent P.
Natarajan, Lalgudi V.
White, Timothy J.
Bunning, Timothy J.
TI Local Optical Spectra and Texture for Chiral Nematic Liquid Crystals in
Cells with Interdigitated Electrodes
SO MOLECULAR CRYSTALS AND LIQUID CRYSTALS
LA English
DT Article
DE microspectrometer; helix unwinding; Cholesteric liquid crystals;
interdigitated electrodes
ID MAGNETIC-FIELD; DISTORTION; COLOR
AB A microspectrophotometer was used to measure reflection spectra of cholesteric liquid crystals (CLCs) in cells with interdigitated electrodes as a function of applied voltage in order to probe the spatial variation in behavior in the electrode and gap regions. Complex changes in the optical spectra are observed in the gap regions for cells in which the electric field magnitude changes significantly through the thickness of the cell. This leads to a non-uniform helix unwinding and pitch gradient in the cell. In cells with smaller field gradients, the unwinding occurs in a uniform manner and it is possible, under certain conditions, to distinguish discrete changes in pitch, corresponding to a decrease in the number of half-turns of the helical structure in the cell.
C1 [Rumi, Mariacristina; Tondiglia, Vincent P.; Natarajan, Lalgudi V.; White, Timothy J.; Bunning, Timothy J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Rumi, Mariacristina] Azimuth Corp, Dayton, OH USA.
[Tondiglia, Vincent P.; Natarajan, Lalgudi V.] Sci Applicat Int Corp, Beavercreek, OH USA.
RP Bunning, TJ (reprint author), Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM timothy.bunning@us.af.mil
RI Rumi, Mariacristina/C-9474-2009
OI Rumi, Mariacristina/0000-0002-4597-9617
FU Air Force Office of Scientific Research; Materials and Manufacturing
Directorate of the Air Force Research Laboratory
FX This work was supported by the Air Force Office of Scientific Research
and the Materials and Manufacturing Directorate of the Air Force
Research Laboratory. The authors thank Prof. Deng- Ke Yang for the
fabrication of type-II cells.
NR 12
TC 1
Z9 1
U1 1
U2 10
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 1542-1406
EI 1563-5287
J9 MOL CRYST LIQ CRYST
JI Mol. Cryst. Liquid Cryst.
PD MAY 24
PY 2014
VL 595
IS 1
SI SI
BP 123
EP 135
DI 10.1080/15421406.2014.917825
PG 13
WC Crystallography
SC Crystallography
GA AQ1RO
UT WOS:000342558900017
ER
PT J
AU Moore, CS
Chamberlin, PC
Hock, R
AF Moore, Christopher Samuel
Chamberlin, Phillip Clyde
Hock, Rachel
TI MEASUREMENTS AND MODELING OF TOTAL SOLAR IRRADIANCE IN X-CLASS SOLAR
FLARES
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE stars: flare; Sun: chromosphere; Sun: flares; Sun: photosphere; Sun:
transition region; Sun: UV radiation
ID MONITOR TIM; EMISSION; EVENTS
AB The Total Irradiance Monitor (TIM) from NASA's SOlar Radiation and Climate Experiment can detect changes in the total solar irradiance (TSI) to a precision of 2 ppm, allowing observations of variations due to the largest X-class solar flares for the first time. Presented here is a robust algorithm for determining the radiative output in the TIM TSI measurements, in both the impulsive and gradual phases, for the four solar flares presented in Woods et al., as well as an additional flare measured on 2006 December 6. The radiative outputs for both phases of these five flares are then compared to the vacuum ultraviolet (VUV) irradiance output from the Flare Irradiance Spectral Model (FISM) in order to derive an empirical relationship between the FISM VUV model and the TIM TSI data output to estimate the TSI radiative output for eight other X-class flares. This model provides the basis for the bolometric energy estimates for the solar flares analyzed in the Emslie et al. study.
C1 [Moore, Christopher Samuel] Univ Colorado, Ctr Astrophys & Space Astron, Boulder, CO 80309 USA.
[Moore, Christopher Samuel] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
[Moore, Christopher Samuel] Univ Colorado, Astrophys & Planetary Sci Dept, Boulder, CO 80309 USA.
[Chamberlin, Phillip Clyde] NASA, Goddard Space Flight Ctr, Solar Phys Lab, Greenbelt, MD 20771 USA.
[Hock, Rachel] Air Force Res Lab, Space Vehicle Directorate, Kirtland AFB, NM 87117 USA.
RP Moore, CS (reprint author), Univ Colorado, Ctr Astrophys & Space Astron, UCB 389, Boulder, CO 80309 USA.
RI Chamberlin, Phillip/C-9531-2012
OI Chamberlin, Phillip/0000-0003-4372-7405
FU Laboratory for Atmospheric and Space Physics (LASP); NSF REU program
FX The authors thank the Laboratory for Atmospheric and Space Physics
(LASP) for their funding and support, as well as support from the NSF
REU program.
NR 25
TC 4
Z9 4
U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD MAY 20
PY 2014
VL 787
IS 1
AR 32
DI 10.1088/0004-637X/787/1/32
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AH2AX
UT WOS:000335924200032
ER
PT J
AU Iurov, A
Gumbs, G
Gao, B
Huang, DH
AF Iurov, Andrii
Gumbs, Godfrey
Gao, Bo
Huang, Danhong
TI Modeling anisotropic plasmon excitations in self-assembled fullerenes
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID ENERGY-LOSS SPECTROSCOPY; MULTISHELL FULLERENES; C-60 MOLECULE;
ELECTRON-GAS; THIN-FILMS; NANOTUBES; SURFACE; DIMERS; C60
AB The plasmon excitations in Coulomb-coupled spherical two-dimensional electron gases (S2DEGs) reveal an interesting dependence on the displacement vector between the centers of the spheres with respect to the axis of quantization for the angular momentum quantum number L. Specifically, plasmon modes for a bundle of three S2DEGs have been obtained within the random-phase approximation. The inter-sphere Coulomb interaction matrix elements and their symmetry properties were also investigated in detail. The case of a bundle gives an adequate picture of the way in which the Coulomb interaction depends on the orbital angular momentum quantum number L and its projection M. We concluded that the interaction between the S2DEGs aligned at an angle of 45 degrees with the axis of quantization is negligible compared to the interaction along and perpendicular to the quantization axis, which are themselves unequal to each other. Consequently, the plasmon excitation frequencies reveal an interesting orientational anisotropic coupling to an external electromagnetic field probing the charge density oscillations. Our result on the spatial correlation may be experimentally observable. In this connection, there have already been some experimental reports pointing to a similar effect in nanoparticles. (C) 2014 AIP Publishing LLC.
C1 [Iurov, Andrii; Gumbs, Godfrey; Gao, Bo] CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10065 USA.
[Huang, Danhong] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Gumbs, Godfrey] DIPC, San Sebastian 20018, Basque Country, Spain.
RP Iurov, A (reprint author), CUNY Hunter Coll, Dept Phys & Astron, 695 Pk Ave, New York, NY 10065 USA.
EM theorist.physics@gmail.com
RI DONOSTIA INTERNATIONAL PHYSICS CTR., DIPC/C-3171-2014
FU AFRL [FA 9453-07-C-0207]; Air Force Office of Scientific Research
(AFOSR)
FX This research was supported by contract # FA 9453-07-C-0207 of AFRL. D.
H. would like to thank the support from the Air Force Office of
Scientific Research (AFOSR).
NR 35
TC 4
Z9 4
U1 0
U2 13
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD MAY 19
PY 2014
VL 104
IS 20
AR 203103
DI 10.1063/1.4878399
PG 5
WC Physics, Applied
SC Physics
GA AI8EQ
UT WOS:000337140800056
ER
PT J
AU Rumi, M
Tondiglia, VP
Natarajan, LV
White, TJ
Bunning, TJ
AF Rumi, Mariacristina
Tondiglia, Vincent P.
Natarajan, Lalgudi V.
White, Timothy J.
Bunning, Timothy J.
TI Non-Uniform Helix Unwinding of Cholesteric Liquid Crystals in Cells with
Interdigitated Electrodes
SO CHEMPHYSCHEM
LA English
DT Article
DE chirality; cholesterics; electro-optics effects; interdigitated
electrodes; liquid crystals
ID PHASE-TRANSITIONS; COLOR; FIELD
AB A microspectrophotometer was used to elucidate the local optical properties of cholesteric liquid crystals (CLCs) in cells with interdigitated electrodes as a function of applied voltage. The spectra collected from a spatially selective and micron-sized sampling area allow for new insights into the spectral properties of CLCs in the gaps between patterned electrodes. The microscopic electro-optic response is shown to be highly dependent on the cell thickness and the electrode periodicity. Specifically, the helix unwinding of the CLC superstructure does not always occur uniformly in the sample, as a result of field gradients through the cell thickness: for cells with relatively narrow gaps and electrodes, the redshift occurs initially only in the CLC layers closest to the substrate with the electrodes, leading to broad reflection spectra and different reflection colors depending on which side of the cell is illuminated. Theoretical estimates of the expected shift in the reflection band gap based on the critical field for a given CLC material and the spatial variation of electric field in the cell are found to be in good agreement with the complex behavior observed experimentally. In contrast, in thin cells with wider gaps, the pitch increase affects the whole CLC layer uniformly, because the electric field gradient is small.
C1 [Rumi, Mariacristina; Tondiglia, Vincent P.; Natarajan, Lalgudi V.; White, Timothy J.; Bunning, Timothy J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Rumi, Mariacristina] Azimuth Corp, Dayton, OH 45432 USA.
[Tondiglia, Vincent P.; Natarajan, Lalgudi V.] Sci Applicat Int Corp, Beavercreek, OH 45431 USA.
RP Bunning, TJ (reprint author), Air Force Res Lab, Mat & Mfg Directorate, Bldg 651,3005 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM timothy.bunning@us.af.mil
RI Rumi, Mariacristina/C-9474-2009; White, Timothy/D-4392-2012
OI Rumi, Mariacristina/0000-0002-4597-9617;
FU Air Force Office of Scientific Research; Materials and Manufacturing
Directorate of the Air Force Research Laboratory
FX The authors acknowledge funding from the Air Force Office of Scientific
Research and the Materials and Manufacturing Directorate of the Air
Force Research Laboratory. We thank Prof. D. K. Yang for fabricating
cells of type A.
NR 28
TC 3
Z9 3
U1 1
U2 18
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1439-4235
EI 1439-7641
J9 CHEMPHYSCHEM
JI ChemPhysChem
PD MAY 19
PY 2014
VL 15
IS 7
SI SI
BP 1311
EP 1322
DI 10.1002/cphc.201300995
PG 12
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AG6GA
UT WOS:000335515900007
PM 24382785
ER
PT J
AU Miller, TM
Shuman, NS
Viggiano, AA
AF Miller, Thomas M.
Shuman, Nicholas S.
Viggiano, Albert A.
TI Arrhenius behavior of electron attachment to CH3Br from 303 to 1100K
SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
LA English
DT Article
DE Electron attachment; Rate constant; Temperature dependence; Methyl
bromide; Kinetic modeling
ID CAPTURE RATE CONSTANTS; TRAJECTORY CALCULATIONS; DISSOCIATIVE
ATTACHMENT; TEMPERATURE-DEPENDENCE; RATE COEFFICIENTS; METHYL HALIDES;
ION; ENERGY; GASES; CF3BR
AB Thermal electron attachment to CH3Br has been studied over the temperature range 303-1100K using two flowing-afterglow Langmuir-probe apparatuses. The reaction yielded only Br- product over this temperature range. The rate coefficient for electron attachment to CH3Br was measured to be 8 +/- 4 x 10(-12) cm(3) s(-1) at 303 K, and was observed to increase strongly with gas temperature. Rate coefficients for the reaction show Arrhenius behavior over the entire temperature range with an activation energy of 260 +/- 20 meV. The results are in substantial agreement with earlier data covering a smaller temperature range. Kinetic modeling implies that this behavior and the small rate coefficient at room temperature are due to a barrier in the crossing from the neutral to the anionic potential surfaces of 280 meV that dominates other factors in the attachment reaction. There is a hint of the Arrhenius plot reaching saturation at the highest temperatures. While examining an electron-cation recombination correction, the rate coefficient (1.8 +/- 0.4 x 10(-9) cm(3) s(-1)) of the reaction Ar+ + CH3Br was measured at 302 K, and the ion products identified (80% CH3+ and 20% CH2Br+). A secondary reaction forming the adduct (CH3Br)CH3+ was seen to occur with a rate coefficient of 2.8 +/- 1.0 x 10(-9) cm(3) Published by Elsevier B.V.
C1 [Miller, Thomas M.; Shuman, Nicholas S.; Viggiano, Albert A.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Viggiano, AA (reprint author), Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
EM ryborgmailbox@kirtland.af.mil
FU Air Force Office of Scientific Research [AFOSR-2303EP]; Institute for
Scientific Research of Boston College [FA8718-10-C-0002]
FX We dedicate this paper to many years of stimulating interactions with
Tilmann Mark. We thank Zoran Petrovic and Malcolm Elford for advice
regarding a misprint in Ref. [6]. We are grateful for the support of the
Air Force Office of Scientific Research for this work under Project
AFOSR-2303EP. T.M.M. is under contract (No. FA8718-10-C-0002) from the
Institute for Scientific Research of Boston College.
NR 36
TC 0
Z9 0
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1387-3806
EI 1873-2798
J9 INT J MASS SPECTROM
JI Int. J. Mass Spectrom.
PD MAY 15
PY 2014
VL 365
SI SI
BP 75
EP 79
DI 10.1016/j.ijms.2013.12.006
PG 5
WC Physics, Atomic, Molecular & Chemical; Spectroscopy
SC Physics; Spectroscopy
GA AK7QG
UT WOS:000338622200013
ER
PT J
AU Schultz, PA
Edwards, AH
AF Schultz, Peter A.
Edwards, Arthur H.
TI Modeling charged defects inside density functional theory band gaps
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM
INTERACTIONS WITH MATERIALS AND ATOMS
LA English
DT Article
DE Defects; Density functional theory; Band gap; Electronic properties;
Gallium arsenide; Modeling and simulation
ID PERIODIC BOUNDARY-CONDITIONS; ELECTRONIC-STRUCTURE; POINT-DEFECTS;
SILICON; SEMICONDUCTORS; BORON; PSEUDOPOTENTIALS; APPROXIMATION;
PARAMETERS; VACANCY
AB Density functional theory (DFT) has emerged as an important tool to probe microscopic behavior in materials. The fundamental band gap defines the energy scale for charge transition energy levels of point defects in ionic and covalent materials. The eigenvalue gap between occupied and unoccupied states in conventional DFT, the Kohn-Sham gap, is often half or less of the experimental band gap, seemingly precluding quantitative studies of charged defects. Applying explicit and rigorous control of charge boundary conditions in supercells, we find that calculations of defect energy levels derived from total energy differences give accurate predictions of charge transition energy levels in Si and GaAs, unhampered by a band gap problem. The GaAs system provides a good theoretical laboratory for investigating band gap effects in defect level calculations: depending on the functional and pseudopotential, the Kohn-Sham gap can be as large as 1.1 eV or as small as 0.1 eV. We find that the effective defect band gap, the computed range in defect levels, is mostly insensitive to the Kohn-Sham gap, demonstrating it is often possible to use conventional DFT for quantitative studies of defect chemistry governing interesting materials behavior in semiconductors and oxides despite a band gap problem. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Schultz, Peter A.] Sandia Natl Labs, Adv Device Technol Dept, Albuquerque, NM 87185 USA.
[Edwards, Arthur H.] AFRL RVSE, Air Force Res Lab, Kirtland AFB, NM 87117 USA.
RP Schultz, PA (reprint author), Sandia Natl Labs, Adv Device Technol Dept, POB 5800, Albuquerque, NM 87185 USA.
EM paschul@sandia.gov
FU Sandia Corporation, a wholly owned subsidiary of Lockheed Martin
Corporation, for the United States Department of Energy's National
Nuclear Security Administration [DE-AC04-94AL85000]
FX Sandia National Laboratories is a multi-program laboratory managed and
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the United States Department of Energy's
National Nuclear Security Administration under contract
DE-AC04-94AL85000.
NR 41
TC 3
Z9 3
U1 5
U2 26
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-583X
EI 1872-9584
J9 NUCL INSTRUM METH B
JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms
PD MAY 15
PY 2014
VL 327
BP 2
EP 8
DI 10.1016/j.nimb.2013.09.046
PG 7
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Atomic, Molecular & Chemical; Physics, Nuclear
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA AI6WA
UT WOS:000337016500002
ER
PT J
AU Liu, QK
Tang, JW
Zhang, Y
Martinez, A
Wang, SW
He, SL
White, TJ
Smalyukh, II
AF Liu, Qingkun
Tang, Jianwei
Zhang, Yuan
Martinez, Angel
Wang, Shaowei
He, Sailing
White, Timothy J.
Smalyukh, Ivan I.
TI Shape-dependent dispersion and alignment of nonaggregating plasmonic
gold nanoparticles in lyotropic and thermotropic liquid crystals
SO PHYSICAL REVIEW E
LA English
DT Article
ID CARBON NANOTUBES; COLLOIDAL INTERACTIONS; TOPOLOGICAL DEFECTS;
ANISOTROPIC FLUIDS; SELF-ALIGNMENT; NANORODS; SUSPENSION; PARTICLES;
MOLECULES; DNA
AB We use both lyotropic liquid crystals composed of prolate micelles and thermotropic liquid crystals made of rod-like molecules to uniformly disperse and unidirectionally align relatively large gold nanorods and other complex-shaped nanoparticles at high concentrations. We show that some of these ensuing self-assembled orientationally ordered soft matter systems exhibit polarization-dependent plasmonic properties with strongly pronounced molar extinction exceeding that previously achieved in self-assembled composites. The long-range unidirectional alignment of gold nanorods is mediated mainly by anisotropic surface anchoring interactions at the surfaces of gold nanoparticles. Polarization-sensitive absorption, scattering, and extinction are used to characterize orientations of nanorods and other nanoparticles. The experimentally measured unique optical properties of these composites, which stem from the collective plasmonic effect of the gold nanorods with long-range order in a liquid crystal matrix, are reproduced in computer simulations. A simple phenomenological model based on anisotropic surface interaction explains the alignment of gold nanorods dispersed in liquid crystals and the physical underpinnings behind our observations.
C1 [Liu, Qingkun; Zhang, Yuan; Martinez, Angel; Smalyukh, Ivan I.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
[Liu, Qingkun; Zhang, Yuan; Martinez, Angel; Smalyukh, Ivan I.] Univ Colorado, Mat Sci & Engn Program, Boulder, CO 80309 USA.
[Tang, Jianwei; Zhang, Yuan; Wang, Shaowei; He, Sailing] Zhejiang Univ, Ctr Opt & Elect Res, Hangzhou 310058, Zhejiang, Peoples R China.
[White, Timothy J.] Mat & Mfg Directorate, Air Force Res Lab, Wright Patterson AFB, OH USA.
[Smalyukh, Ivan I.] Univ Colorado, Dept Elect Comp & Energy Engn, Boulder, CO 80309 USA.
[Smalyukh, Ivan I.] Univ Colorado, Liquid Crystals Mat Res Ctr, Boulder, CO 80309 USA.
[Smalyukh, Ivan I.] Renewable & Sustainable Energy Inst, Natl Renewable Energy Lab, Boulder, CO 80309 USA.
[Smalyukh, Ivan I.] Univ Colorado, Boulder, CO 80309 USA.
RP Liu, QK (reprint author), Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
EM ivan.smalyukh@colorado.edu
RI Smalyukh, Ivan/C-2955-2011; Zhejiang University, Dep. Optical
Eng./G-9022-2011; He, Sailing/C-2438-2009; Wang, Shaowei/N-9419-2016
OI Smalyukh, Ivan/0000-0003-3444-1966; He, Sailing/0000-0002-3401-1125;
Wang, Shaowei/0000-0003-2773-4525
FU US Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering [ER46921]; NSF [DGE-0801680]
FX This research was supported by the US Department of Energy, Office of
Basic Energy Sciences, Division of Materials Sciences and Engineering
under Award ER46921 (Q.L., Y.Z., A.M., I.I.S.) and partially by an NSF
Grant No. DGE-0801680 (A.M., I.I.S.). We thank Michael Campbell, Nan
Wang, Julian Evans, Pengxin Chen, Noel Clark, Leo Radzihovsky, Yalun
Wang, Qiuqiang Zhan, and Jun Qian for discussions.
NR 47
TC 18
Z9 18
U1 4
U2 46
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
EI 1550-2376
J9 PHYS REV E
JI Phys. Rev. E
PD MAY 15
PY 2014
VL 89
IS 5
AR 052505
DI 10.1103/PhysRevE.89.052505
PG 10
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA AH1NP
UT WOS:000335888000003
PM 25353813
ER
PT J
AU Day, PN
Pachter, R
Nguyen, KA
AF Day, Paul N.
Pachter, Ruth
Nguyen, Kiet A.
TI Analysis of nonlinear optical properties in donor-acceptor materials
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; 2-PHOTON ABSORPTION-SPECTRA;
PARA-NITROANILINE; EXPERIMENTAL HYPERPOLARIZABILITIES; 2ND-HARMONIC
GENERATION; ELECTRON CORRELATION; CROSS-SECTIONS; DIPOLE-MOMENT;
CHROMOPHORES; POLARIZABILITIES
AB Time-dependent density functional theory has been used to calculate nonlinear optical (NLO) properties, including the first and second hyperpolarizabilities as well as the two-photon absorption cross-section, for the donor-acceptor molecules p-nitroaniline and dimethylamino nitrostilbene, and for respective materials attached to a gold dimer. The CAMB3LYP, B3LYP, PBE0, and PBE exchange-correlation functionals all had fair but variable performance when compared to higher-level theory and to experiment. The CAMB3LYP functional had the best performance on these compounds of the functionals tested. However, our comprehensive analysis has shown that quantitative prediction of hyperpolarizabilities is still a challenge, hampered by inadequate functionals, basis sets, and solvation models, requiring further experimental characterization. Attachment of the Au2S group to molecules already known for their relatively large NLO properties was found to further enhance the response. While our calculations show a modest enhancement for the first hyperpolarizability, the enhancement of the second hyperpolarizability is predicted to be more than an order of magnitude. (C) 2014 AIP Publishing LLC.
C1 [Day, Paul N.; Pachter, Ruth; Nguyen, Kiet A.] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Day, Paul N.] Gen Dynam Informat Technol Inc, Dayton, OH 45431 USA.
[Nguyen, Kiet A.] UES Inc, Dayton, OH 45432 USA.
RP Day, PN (reprint author), US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
FU Air Force Office of Scientific Research
FX Support for this work was provided by the Air Force Office of Scientific
Research. The AFRL DoD Supercomputing Resource Center is acknowledged
for providing computational resources and helpful support.
NR 72
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U1 3
U2 35
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD MAY 14
PY 2014
VL 140
IS 18
AR 184308
DI 10.1063/1.4874267
PG 13
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AI3SR
UT WOS:000336782700072
PM 24832271
ER
PT J
AU Clayton, NA
Kappagantula, KS
Pantoya, ML
Kettwich, SC
Iacono, ST
AF Clayton, Nicholas A.
Kappagantula, Keerti S.
Pantoya, Michelle L.
Kettwich, Sharon C.
Iacono, Scott T.
TI Fabrication, Characterization, and Energetic Properties of Metallized
Fibers
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE nanothermite; pyrolant; energetic material; electrospinning;
nanoparticles
ID SURFACE FUNCTIONALIZATION; ALUMINUM; REACTIVITY; NANOCOMPOSITES;
COMPOSITES; COMBUSTION; BEHAVIOR
AB Polystyrene fibers loaded with an energetic blend of nanoaluminum (n-Al) and perfluoropolyether (PFPE) were successfully fabricated via electrospinning producing nanothermite fabrics. Fibers were generated with loadings up to 17 wt % n-Al/PFPE incorporated into the fiber. Microscopy analysis by SEM and TEM confirm a uniform dispersion of PFPE treated n-Al on the outside and inside of the fibers. Metallized fibers were thermally active upon immediate ignition from a controlled flame source. Thermal analysis by differential scanning calorimetry (DSC) found no change in glass transition temperature when comparing pure polystyrene fibers with fibers loaded up to 17 wt % n-Al/PFPE. Thermal gravimetric analysis (TGA) revealed a shift in decomposition temperatures to lower onsets upon increased loadings of n-Al/PFPE blends, consistent with previous studies. Flame propagation studies confirmed that the metallized fibers are pryolants. These metallized fibers are a recent development in metastable intermolecular composites (MICs) and details of their synthesis, characterization, and thermal properties are presented.
C1 [Clayton, Nicholas A.; Kettwich, Sharon C.; Iacono, Scott T.] US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
[Clayton, Nicholas A.; Kettwich, Sharon C.; Iacono, Scott T.] US Air Force Acad, Chem Res Ctr, Colorado Springs, CO 80840 USA.
[Kappagantula, Keerti S.; Pantoya, Michelle L.] Texas Tech Univ, Dept Mech Engn, Lubbock, TX 79409 USA.
RP Kettwich, SC (reprint author), US Air Force Acad, Dept Chem, 2355 Fairchild Dr,Suite 2N225, Colorado Springs, CO 80840 USA.
EM ckettwich@gmail.com; scott.iacono@usafa.edu
FU Air Force Research Laboratory; Eglin Air Force Base; U.S. Air Force
Academy [FA7000-10-2-0038]; US Army Research Office [W911NF1110439]
FX The authors acknowledge Dr. Laxmikant Saraf and George Wetzel (Clemson
University Electron Microscopy Facility) for the SEM and TEM images and
Ryan Steelman (Texas Tech University) for technical expertise. S.C.K.
acknowledges funding for this work made available by Air Force Research
Laboratory, Eglin Air Force Base, sponsored by the U.S. Air Force
Academy under Agreement FA7000-10-2-0038. M.L.P. acknowledges support
from the US Army Research Office Contract W911NF1110439.
NR 32
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U1 2
U2 24
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1944-8244
J9 ACS APPL MATER INTER
JI ACS Appl. Mater. Interfaces
PD MAY 14
PY 2014
VL 6
IS 9
BP 6049
EP 6053
DI 10.1021/am404583h
PG 5
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA AH4CV
UT WOS:000336075300006
PM 24380392
ER
PT J
AU Jordan, JL
Spowart, JE
Kendall, MJ
Woodworth, B
Siviour, CR
AF Jordan, J. L.
Spowart, J. E.
Kendall, M. J.
Woodworth, B.
Siviour, C. R.
TI Mechanics of particulate composites with glassy polymer binders in
compression
SO PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL
AND ENGINEERING SCIENCES
LA English
DT Article
DE high strain rate; polymethyl methacrylate; particulate composite
ID PARTICLE-MATRIX ADHESION; STRAIN-RATE; YIELD BEHAVIOR; POLY(METHYL
METHACRYLATE); AMORPHOUS POLYMERS; FILLED EPOXIES; DEFORMATION; FAILURE;
SIZE; TEMPERATURES
AB Whether used as structural components in design or matrix materials for composites, the mechanical properties of polymers are increasingly important. The compressive response of extruded polymethyl methacrylate (PMMA) rod with aligned polymer chains and Al-Ni-PMMA particulate composites are investigated across a range of strain rates and temperatures. The particulate composites were prepared using an injection-moulding technique resulting in highly anisotropic microstructures. The mechanics of these materials are discussed in the light of theories of deformation for glassy polymers. The experimental data from this study are compared with PMMA results from the literature as well as epoxy-based composites with identical particulates. The PMMA exhibited the expected strain rate and temperature dependence and brittle failure was observed at the highest strain rates and lowest temperatures. The Al-Ni-PMMA composites were found to have similar stress-strain response to the PMMA with reduced strain softening after yield. Increasing volume fraction of particulates in the composite resulted in decreased strength.
C1 [Jordan, J. L.] Air Force Off Sci Res, AFOSR RTE, Arlington, VA 22203 USA.
[Spowart, J. E.] Air Force Res Lab, AFRL RXBC, Wright Patterson AFB, OH 45433 USA.
[Kendall, M. J.; Siviour, C. R.] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England.
[Woodworth, B.] Air Force Res Lab, AFRL RWME, Eglin AFB, FL 32542 USA.
RP Jordan, JL (reprint author), Air Force Off Sci Res, AFOSR RTE, Arlington, VA 22203 USA.
EM jennifer.jordan.6@us.af.mil
RI Siviour, Clive/E-2032-2012;
OI Jordan, Jennifer/0000-0002-4596-5872
FU Air Force Office of Scientific Research, Air Force Material Command,
USAF [FA8655-09-1-3088]
FX M.J.K.'s research is sponsored by the Air Force Office of Scientific
Research, Air Force Material Command, USAF, under grant no.
FA8655-09-1-3088.
NR 39
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U1 1
U2 12
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-503X
EI 1471-2962
J9 PHILOS T R SOC A
JI Philos. Trans. R. Soc. A-Math. Phys. Eng. Sci.
PD MAY 13
PY 2014
VL 372
IS 2015
SI SI
AR 20130215
DI 10.1098/rsta.2013.0215
PG 12
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AE9TZ
UT WOS:000334354500009
PM 24711495
ER
PT J
AU Gao, Y
Zare, S
Yang, X
Nan, TX
Zhou, ZY
Onabajo, M
O'Brien, KP
Jalan, U
Ei-tatani, M
Fisher, P
Liu, M
Aronow, A
Mahalingam, K
Howe, BM
Brown, GJ
Sun, NX
AF Gao, Y.
Zare, S.
Yang, X.
Nan, T. X.
Zhou, Z. Y.
Onabajo, M.
O'Brien, Kevin P.
Jalan, Umesh
EI-tatani, Mohammed
Fisher, Paul
Liu, M.
Aronow, A.
Mahalingam, K.
Howe, B. M.
Brown, G. J.
Sun, N. X.
TI High quality factor integrated gigahertz magnetic transformers with
FeGaB/Al2O3 multilayer films for radio frequency integrated circuits
applications (vol 115, 17E714, 2014)
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 58th Annual Conference on Magnetism and Magnetic Materials
CY NOV 04-08, 2013
CL Denver, CO
C1 [Gao, Y.; Zare, S.; Yang, X.; Nan, T. X.; Zhou, Z. Y.; Onabajo, M.; Sun, N. X.] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
[O'Brien, Kevin P.; Jalan, Umesh; EI-tatani, Mohammed; Fisher, Paul] Intel Res, Hillsboro, OR 97124 USA.
[Liu, M.; Aronow, A.; Mahalingam, K.; Howe, B. M.; Brown, G. J.] AFRL, Mat Directorate, Wright Patterson AFB, OH 45433 USA.
RP Gao, Y (reprint author), Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
EM gao.yuan2@husky.neu.edu
RI Zhou, Ziyao/N-8398-2015; Nan, Tianxiang/A-8020-2016; Gao,
Yuan/E-4277-2016; Sun, Nian Xiang/F-9590-2010; Liu, Ming/B-4143-2009
OI Zhou, Ziyao/0000-0002-2389-1673; Gao, Yuan/0000-0002-2444-1180; Sun,
Nian Xiang/0000-0002-3120-0094; Liu, Ming/0000-0002-6310-948X
NR 1
TC 0
Z9 0
U1 1
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD MAY 7
PY 2014
VL 115
IS 17
AR 179902
DI 10.1063/1.4871835
PG 1
WC Physics, Applied
SC Physics
GA AG8BO
UT WOS:000335643700663
ER
PT J
AU Gao, Y
Zare, S
Yang, X
Nan, TX
Zhou, ZY
Onabajo, M
O'Brien, KP
Jalan, U
Ei-Tatani, M
Fisher, P
Liu, M
Aronow, A
Mahalingam, K
Howe, BM
Brown, GJ
Sun, NX
AF Gao, Y.
Zare, S.
Yang, X.
Nan, T. X.
Zhou, Z. Y.
Onabajo, M.
O'Brien, Kevin P.
Jalan, Umesh
EI-Tatani, Mohammed
Fisher, Paul
Liu, M.
Aronow, A.
Mahalingam, K.
Howe, B. M.
Brown, G. J.
Sun, N. X.
TI High quality factor integrated gigahertz magnetic transformers with
FeGaB/Al2O3 multilayer films for radio frequency integrated circuits
applications
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 58th Annual Conference on Magnetism and Magnetic Materials
CY NOV 04-08, 2013
CL Denver, CO
ID LOW-TEMPERATURE; MICROTRANSFORMER; INDUCTORS; SILICON
AB This work report new integrated high quality factor (Q) GHz magnetic transformers based on solenoid structures with FeGaB/Al2O3 multilayer films. These transformers show excellent high-frequency performance with a wide operation frequency range of 0.5-5 GHz, in which primary, secondary, and mutual inductances are flat, and the peak quality factor can reach around 14 at frequency of 1.2 GHz. High mutual coupling and low insertion loss are also demonstrated. These novel GHz transformers with high Q and mutual coupling show great promise for applications in radio frequency integrated circuits. (C) 2014 AIP Publishing LLC.
C1 [Gao, Y.; Zare, S.; Yang, X.; Nan, T. X.; Zhou, Z. Y.; Onabajo, M.; Sun, N. X.] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
[O'Brien, Kevin P.; Jalan, Umesh; EI-Tatani, Mohammed; Fisher, Paul] Intel Res, Hillsboro, OR 97124 USA.
[Liu, M.; Aronow, A.; Mahalingam, K.; Howe, B. M.; Brown, G. J.] WPAFB, AFRL, Mat Directorate, Wright Patterson AFB, OH 45433 USA.
RP Gao, Y (reprint author), Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
EM gao.yuan2@husky.neu.edu
RI Liu, Ming/B-4143-2009; Zhou, Ziyao/N-8398-2015; Nan,
Tianxiang/A-8020-2016; Gao, Yuan/E-4277-2016; Yang, Xi/E-6042-2016; Sun,
Nian Xiang/F-9590-2010
OI Liu, Ming/0000-0002-6310-948X; Zhou, Ziyao/0000-0002-2389-1673; Gao,
Yuan/0000-0002-2444-1180; Sun, Nian Xiang/0000-0002-3120-0094
FU SRC; NSF; UES [S-875-060-018]; National Science Foundation [ECS-0335765]
FX This work was supported in part by SRC, NSF, and by UES under Contract
No. S-875-060-018. The authors would like to thank Dr. Byron Williams,
Dr. Dok-Won Lee, Dr. Leif Olsen, Dr. Andrei Papou, Dr. Rick Wise, and
Dr. Tom Bonifield from TI and Dr. Kwok Ng from SRC for discussions and
support. This work was performed in part at the Center for Nanoscale
Systems (CNS), a member of the National Nanotechnology Infrastructure
Network (NNIN), which is supported by the National Science Foundation
under NSF award no. ECS-0335765. CNS is part of Harvard University.
NR 17
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U1 1
U2 21
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD MAY 7
PY 2014
VL 115
IS 17
AR 17E714
DI 10.1063/1.4868622
PG 3
WC Physics, Applied
SC Physics
GA AG8BO
UT WOS:000335643700563
ER
PT J
AU Sathish, S
Welter, JT
Schehl, N
Jata, KV
AF Sathish, S.
Welter, J. T.
Schehl, N.
Jata, K. V.
TI Noncontact acousto-thermal evaluation of evolving fatigue damage in
polycrystalline Ti-6Al-4V
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 58th Annual Conference on Magnetism and Magnetic Materials
CY NOV 04-08, 2013
CL Denver, CO
ID HARMONIC-GENERATION; INTERNAL-FRICTION; DISLOCATIONS; ANELASTICITY;
CRYSTALS; ALLOYS
AB Non-Contact Acousto-Thermal Signature (NCATS) analysis uses conversion of acoustic energy to heat to characterize evolving damage in materials. In the past, the observed temperature changes were interpreted using phenomenological approaches. This paper presents details of the mechanisms and the theoretical models to predict the temperature change due to conversion of acoustic energy to heat. NCATS experimental measurements performed using 20 kHz high amplitude acoustic waves on as received and fatigued polycrystalline Ti-6Al-4V are compared with theoretical calculations based on the mechanisms of transverse thermal currents, inter-crystalline thermal currents, and dislocation density changes. In the as received samples, the transverse thermal currents contribution has been found to be negligible compared with inter-crystalline thermal currents contribution. The experimentally measured maximum temperature change in the as received sample has been found to be 0.5 degrees C, and the theoretical prediction based on inter-crystalline thermal currents is 0.08 degrees C. In the fatigue damaged samples, the maximum temperature change increases with increasing damage that can be attributed to the increasing dislocation density. The theoretical prediction of the maximum temperature attained by a sample that is near failure based on dislocation contribution is 2.0 degrees C, while the experimental measurements have been found to be 0.95 degrees C. The differences between the theoretical and the experimental measurements are discussed in the context of the uncertainties in several physical parameters used in the theoretical calculations. (C) 2014 AIP Publishing LLC.
C1 [Welter, J. T.] Air Force Res Lab, Mat State Awareness & Supportabil Branch AFRL RXC, Wright Patterson AFB, OH 45433 USA.
[Sathish, S.; Schehl, N.] Univ Dayton, Res Inst, Struct Integr Div, Dayton, OH 45469 USA.
[Jata, K. V.] Air Force Res Lab, Met Branch AFRL RXCM, Wright Patterson AFB, OH 45433 USA.
RP Sathish, S (reprint author), Univ Dayton, Res Inst, Struct Integr Div, 300 Coll Pk, Dayton, OH 45469 USA.
FU USAF [FA8650-09-D-5224]
FX Portions of this work were performed as USAF Contract FA8650-09-D-5224.
The authors wish to thank Dr. E. Lindgren and Dr. S. Russ for their
critical reading and constructive comments on the manuscript. The
authors also wish to thank Mr. E. Klosterman, Mr. R. Reibel, and Mr. T.
Boehnlein for their help with the NCATS experimental setup and
measurements.
NR 43
TC 0
Z9 0
U1 0
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD MAY 7
PY 2014
VL 115
IS 17
AR 173509
DI 10.1063/1.4875098
PG 6
WC Physics, Applied
SC Physics
GA AG8BO
UT WOS:000335643700607
ER
PT J
AU Walczak, K
Yerkes, KL
AF Walczak, Kamil
Yerkes, Kirk L.
TI Nanoscale transport of phonons: Dimensionality, subdiffusion, molecular
damping, and interference effects
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT 58th Annual Conference on Magnetism and Magnetic Materials
CY NOV 04-08, 2013
CL Denver, CO
ID THERMAL CONDUCTANCE; SPRING CONSTANT; HEAT-TRANSPORT; QUANTUM;
DIFFUSION; SYSTEMS; CHAINS; WIRES; FLOW
AB We examine heat transport carried by acoustic phonons in the systems composed of nanoscale chains of masses coupled to two thermal baths of different temperatures. Thermal conductance is obtained by using linearized Landauer-type formula for heat flux with phonon transmission probability calculated within atomistic Green's functions (AGF) method. AGF formalism is extended onto dissipative chains of masses with harmonic coupling beyond nearest-neighbor approximation, while atomistic description of heat reservoirs is also included into computational scheme. In particular, the phonon lifetimes and the phonon frequency shifts are discussed for harmonic lattices of different dimensions. Further, resonant structure of phonon transmission spectrum is analyzed with respect to reservoir-induced effects, molecular damping, and mass-to-mass harmonic coupling. Analysis of transmission zeros (antiresonances) and their accompanied Fano-shape resonances are discussed as a result of interference effects between different vibrational modes. Finally, we also predict subdiffusive transport regime for low-frequency ballistic phonons propagated along a linear chain of harmonically coupled masses. (C) 2014 AIP Publishing LLC.
C1 [Walczak, Kamil; Yerkes, Kirk L.] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
RP Walczak, K (reprint author), Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
FU Air Force Office of Scientific Research
FX The authors would like to acknowledge support from the Air Force Office
of Scientific Research.
NR 81
TC 3
Z9 3
U1 1
U2 18
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD MAY 7
PY 2014
VL 115
IS 17
AR 174308
DI 10.1063/1.4874755
PG 16
WC Physics, Applied
SC Physics
GA AG8BO
UT WOS:000335643700639
ER
PT J
AU Paskaleva, BS
Godoy, SE
Jang, WY
Bender, SC
Krishna, S
Hayat, MM
AF Paskaleva, Biliana S.
Godoy, Sebastian E.
Jang, Woo-Yong
Bender, Steven C.
Krishna, Sanjay
Hayat, Majeed M.
TI Model-Based Edge Detector for Spectral Imagery Using Sparse
Spatiospectral Masks
SO IEEE TRANSACTIONS ON IMAGE PROCESSING
LA English
DT Article
DE Edge detection; isoluminant edge; classification; multicolor edge
detection; spatio-spectral mask; spectral ratios
ID MULTISPECTRAL IMAGES; CLASSIFICATION; SEGMENTATION; GRADIENT
AB Two model-based algorithms for edge detection in spectral imagery are developed that specifically target capturing intrinsic features such as isoluminant edges that are characterized by a jump in color but not in intensity. Given prior knowledge of the classes of reflectance or emittance spectra associated with candidate objects in a scene, a small set of spectral-band ratios, which most profoundly identify the edge between each pair of materials, are selected to define a edge signature. The bands that form the edge signature are fed into a spatial mask, producing a sparse joint spatiospectral nonlinear operator. The first algorithm achieves edge detection for every material pair by matching the response of the operator at every pixel with the edge signature for the pair of materials. The second algorithm is a classifier-enhanced extension of the first algorithm that adaptively accentuates distinctive features before applying the spatiospectral operator. Both algorithms are extensively verified using spectral imagery from the airborne hyperspectral imager and from a dots-in-a-well midinfrared imager. In both cases, the multicolor gradient (MCG) and the hyperspectral/spatial detection of edges (HySPADE) edge detectors are used as a benchmark for comparison. The results demonstrate that the proposed algorithms outperform the MCG and HySPADE edge detectors in accuracy, especially when isoluminant edges are present. By requiring only a few bands as input to the spatiospectral operator, the algorithms enable significant levels of data compression in band selection. In the presented examples, the required operations per pixel are reduced by a factor of 71 with respect to those required by the MCG edge detector.
C1 [Paskaleva, Biliana S.; Godoy, Sebastian E.; Bender, Steven C.; Krishna, Sanjay; Hayat, Majeed M.] Univ New Mexico, Dept Elect & Comp Engn, Ctr High Technol Mat, Albuquerque, NM 87131 USA.
[Jang, Woo-Yong] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Paskaleva, BS (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
EM bspaska@sandia.gov; sgodoy@unm.edu; jangusc@gmail.com; sbender@lanl.gov;
skrishna@chtm.unm.edu; hayat@chtm.unm.edu
RI Godoy, Sebastian/J-7148-2015
OI Godoy, Sebastian/0000-0001-8692-5749
FU National Consortium for MASINT Research Partnership Project through the
Los Alamos National Laboratory [57461-001-07]; National Science
Foundation [ECS-0401154, IIS-0434102, ECCS-0925757]; Korea Research
Institute of Standards and Science; Nanostructures Far-IR/terahertz
Detectors for Next Generation Imaging Technology Phase II Project; AFOSR
Optoelectronic Research Center; New Mexico Cancer Nanoscience and
Microsystems Training Center, University of New Mexico; CONICYT, Chile;
U.S. Department of Energy National Nuclear Security Administration
[DE-AC04-94AL85000]
FX Manuscript received July 14, 2013; revised December 20, 2013 and
February 27, 2014; accepted March 16, 2014. Date of publication April 1,
2014; date of current version April 22, 2014. This work was supported in
part by the National Consortium for MASINT Research Partnership Project
through the Los Alamos National Laboratory under Grant 57461-001-07, in
part by the National Science Foundation under Grant ECS-0401154 and
Grant IIS-0434102, in part by the Korea Research Institute of Standards
and Science, in part by Nanostructures Far-IR/terahertz Detectors for
Next Generation Imaging Technology Phase II Project, in part by the
National Science Foundation under Grant ECCS-0925757, and in part by
AFOSR Optoelectronic Research Center Grant. The work of S. E. Godoy was
supported in part by the New Mexico Cancer Nanoscience and Microsystems
Training Center, University of New Mexico, and in part by CONICYT,
Chile. Sandia National Laboratories is a MultiProgram Laboratory managed
and operated by Sandia Corporation, a wholly owned subsidiary of
Lockheed Martin Corporation, through the U.S. Department of Energy
National Nuclear Security Administration under Contract
DE-AC04-94AL85000. The associate editor coordinating the review of this
manuscript and approving it for publication was Dr. Debargha Mukherjee.
NR 40
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U1 1
U2 7
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1057-7149
EI 1941-0042
J9 IEEE T IMAGE PROCESS
JI IEEE Trans. Image Process.
PD MAY
PY 2014
VL 23
IS 5
BP 2315
EP 2327
DI 10.1109/TIP.2014.2315154
PG 13
WC Computer Science, Artificial Intelligence; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA CC3XK
UT WOS:000350284400002
PM 24710830
ER
PT J
AU Lingg, AJ
Zelnio, E
Garber, F
Rigling, BD
AF Lingg, Andrew J.
Zelnio, Edmund
Garber, Fred
Rigling, Brian D.
TI A Sequential Framework for Image Change Detection
SO IEEE TRANSACTIONS ON IMAGE PROCESSING
LA English
DT Article
DE Image analysis; image sequence analysis; subtraction techniques
ID SYNTHETIC-APERTURE RADAR; UNSUPERVISED CHANGE DETECTION; AUTOMATIC
CHANGE DETECTION; MULTIPLE-SCLEROSIS; WAVELET TRANSFORM; MODEL;
SEQUENCES; ALGORITHMS
AB We present a sequential framework for change detection. This framework allows us to use multiple images from reference and mission passes of a scene of interest in order to improve detection performance. It includes a change statistic that is easily updated when additional data becomes available. Detection performance using this statistic is predictable when the reference and image data are drawn from known distributions. We verify our performance prediction by simulation. Additionally, we show that detection performance improves with additional measurements on a set of synthetic aperture radar images and a set of visible images with unknown probability distributions.
C1 [Lingg, Andrew J.; Garber, Fred; Rigling, Brian D.] Wright State Univ, Dayton, OH 45435 USA.
[Zelnio, Edmund] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Lingg, AJ (reprint author), Wright State Univ, Dayton, OH 45435 USA.
EM andrew.lingg@gmail.com; edmund.zelnio@wpafb.af.mil;
fred.garber@wright.edu; brian.rigling@wright.edu
FU AFRL [FA8650-07-D-1220]
FX Manuscript received March 4, 2013; revised October 5, 2013 and December
31, 2013; accepted February 15, 2014. Date of publication March 3, 2014;
date of current version April 22, 2014. This work was supported by AFRL
under Grant FA8650-07-D-1220. The associate editor coordinating the
review of this manuscript and approving it for publication was Prof.
Jong C. Ye.
NR 42
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U1 1
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1057-7149
EI 1941-0042
J9 IEEE T IMAGE PROCESS
JI IEEE Trans. Image Process.
PD MAY
PY 2014
VL 23
IS 5
BP 2405
EP 2413
DI 10.1109/TIP.2014.2309432
PG 9
WC Computer Science, Artificial Intelligence; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA CC3XK
UT WOS:000350284400009
PM 24818249
ER
PT J
AU Trippe, DM
Moriarty, KO
Russell, TL
Carretta, TR
Beatty, AS
AF Trippe, D. Matthew
Moriarty, Karen O.
Russell, Teresa L.
Carretta, Thomas R.
Beatty, Adam S.
TI Development of a Cyber/Information Technology Knowledge Test for
Military Enlisted Technical Training Qualification
SO MILITARY PSYCHOLOGY
LA English
DT Article
DE cyber; information and communications technology; technical knowledge;
selection and classification; Armed Services Vocational Aptitude Battery
ID BIOGRAPHICAL DATA; VALIDITY; SELECTION; EMPLOYMENT; BATTERY
AB An Armed Services Vocational Aptitude Battery (ASVAB) Review Panel, with expertise in personnel selection, job classification, psychometrics, and cognitive psychology developed recommendations for changes to the military enlistment test battery. One recommendation was to develop and evaluate a test of cyber/information and communications technology literacy to supplement current ASVAB content. This article summarizes a multiphased Cyber Test development process: (a) a review of information/computer technology literacy definitions and measures, (b) development and pilot testing of a cyber knowledge measure, (c) validation of test scores against final school grades (FSGs) for selected technical training courses, (d) development of an operational reporting metric and subgroup norms, and (e) examination of construct validity. Results indicate the Cyber Test has predictive validity versus technical training school grades and incremental validity comparable to the ASVAB technical knowledge tests when used with the ASVAB Armed Forces Qualification Test (AFQT) verbal/math composite as a baseline.
C1 [Trippe, D. Matthew; Moriarty, Karen O.; Russell, Teresa L.; Beatty, Adam S.] Human Resources Res Org, Alexandria, VA USA.
[Carretta, Thomas R.] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Trippe, DM (reprint author), 10503 Timberwood Circle,Suite 101, Louisville, KY 40223 USA.
EM mtrippe@humrro.org
NR 44
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Z9 5
U1 1
U2 3
PU AMER PSYCHOLOGICAL ASSOC
PI WASHINGTON
PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 USA
SN 0899-5605
EI 1532-7876
J9 MIL PSYCHOL
JI Milit. Psychol.
PD MAY
PY 2014
VL 26
IS 3
SI SI
BP 182
EP 198
DI 10.1037/mil0000042
PG 17
WC Psychology, Multidisciplinary
SC Psychology
GA AQ0WV
UT WOS:000342504300005
ER
PT J
AU Held, JD
Carretta, TR
Rumsey, MG
AF Held, Janet D.
Carretta, Thomas R.
Rumsey, Michael G.
TI Evaluation of Tests of Perceptual Speed/Accuracy and Spatial Ability for
Use in Military Occupational Classification
SO MILITARY PSYCHOLOGY
LA English
DT Article
DE ASVAB; incremental validity; adverse impact; classification
effectiveness; coding speed; assembling objects
ID ECAT BATTERY; INCREMENTAL VALIDITY; PREDICTION BATTERY; LEAST-SQUARES;
EFFICIENCY; PERFORMANCE; SELECTION; SPEED; ASVAB
AB With the exception of Assembling Objects (AO), a spatial ability test used only by the Navy in enlisted occupational classification, the Armed Services Vocational Aptitude Battery (ASVAB) is academic and knowledge-based, somewhat limiting its utility for occupational classification. This article presents the case for integrating the AO test into military classification composites and for expanding the breadth of ASVAB content by including a former ASVAB speed/accuracy test, Coding Speed (CS). Empirical evidence is presented that shows AO and CS (a) increment the validity of the ASVAB in predicting training grades for a broad array of occupations, (b) reduce adverse impact defined as test score barriers for women and minorities, and (c) improve classification in terms of matching recruits to occupations. Some cognitive theory is presented to support AO and CS, as well as nonverbal reasoning and working memory tests for inclusion in or adjuncts to the ASVAB.
C1 [Held, Janet D.] Bur Naval Personnel, Navy Personnel Res Studies & Technol, Millington, TN 38055 USA.
[Carretta, Thomas R.] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Held, JD (reprint author), Bur Naval Personnel, Navy Personnel Res Studies & Technol, 5720 Integr Dr, Millington, TN 38055 USA.
EM janet.held@navy.mil
NR 82
TC 3
Z9 3
U1 2
U2 3
PU AMER PSYCHOLOGICAL ASSOC
PI WASHINGTON
PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 USA
SN 0899-5605
EI 1532-7876
J9 MIL PSYCHOL
JI Milit. Psychol.
PD MAY
PY 2014
VL 26
IS 3
SI SI
BP 199
EP 220
DI 10.1037/mil0000043
PG 22
WC Psychology, Multidisciplinary
SC Psychology
GA AQ0WV
UT WOS:000342504300006
ER
PT J
AU Schmitt-Sody, A
Lucero, A
French, D
Latham, WP
White, W
Roach, WP
AF Schmitt-Sody, Andreas
Lucero, Adrian
French, David
Latham, William P.
White, William
Roach, William P.
TI Electric field measurements during filament-guided discharge
SO OPTICAL ENGINEERING
LA English
DT Article
DE nonlinear optics; plasma; ultrafast phenomena
ID FEMTOSECOND LASER-PULSES; PLASMA CHANNELS; AIR; POWER; CONDUCTIVITY;
INTENSITY; SYSTEM
AB One application of ultrashort pulse filamentation is the coupling of external electric fields to filament plasmas and guiding of high-voltage discharges. However, the full physics of the guiding mechanism is still in question. Several models have been presented and explanations have been suggested to capture the full physics of the discharge event. For the first time, measurements of the electric field dynamics between two electrodes during filament-guided discharges are presented here, to the best of our knowledge. The electric field dynamics show an exponential growth region, a plateau, followed by a sharp drop off coinciding with the discharge event. We believe these results will ultimately answer the questions regarding the guiding mechanism. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
C1 [Schmitt-Sody, Andreas; Lucero, Adrian; French, David; Latham, William P.; White, William] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
[Roach, William P.] Air Force Off Sci Res, Arlington, VA 22203 USA.
RP Schmitt-Sody, A (reprint author), Air Force Res Lab, Kirtland AFB, NM 87117 USA.
EM Andreas.schmitt-sody.1@us.af.mil
FU U.S. National Research Council; Air Force Office of Scientific Research
LRIR [10RD04COR, 11RD10COR, FA9550-10-1-0561]
FX We thank Victor Hasson for constructive discussions of the experimental
results and guidance to the interpretation of the data. Andreas
Schmitt-Sody acknowledges the support from the Research Assistantship
Award by the U.S. National Research Council. This work was supported by
Air Force Office of Scientific Research LRIR#10RD04COR, #11RD10COR and
under Program FA9550-10-1-0561.
NR 31
TC 1
Z9 1
U1 2
U2 8
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
EI 1560-2303
J9 OPT ENG
JI Opt. Eng.
PD MAY
PY 2014
VL 53
IS 5
AR 051504
DI 10.1117/1.OE.53.5.051504
PG 7
WC Optics
SC Optics
GA AN6CH
UT WOS:000340680800012
ER
PT J
AU Buffington, BC
Zupan, MF
Melnyk, BM
Morales, S
Lords, A
Nunley, S
AF Buffington, Brenda C.
Zupan, Michael F.
Melnyk, Bernadette Mazurek
Morales, Shelly
Lords, Amanda
Nunley, Stan
TI An Energy Balance and COPE Intervention for Division I Female Athletes
SO MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
LA English
DT Meeting Abstract
CT 61st Annual Meeting of the American-College-of-Sports-Medicine
CY APR 01-04, 2014
CL Atlanta, GA
SP Amer Coll Sports Med
C1 [Buffington, Brenda C.; Zupan, Michael F.; Morales, Shelly; Lords, Amanda; Nunley, Stan] USAF Acad, Colorado Springs, CO USA.
[Melnyk, Bernadette Mazurek] Ohio State Univ, Columbus, OH 43210 USA.
NR 0
TC 0
Z9 0
U1 2
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0195-9131
EI 1530-0315
J9 MED SCI SPORT EXER
JI Med. Sci. Sports Exerc.
PD MAY
PY 2014
VL 46
IS 5
SU 1
MA 1872
BP 506
EP 506
PG 1
WC Sport Sciences
SC Sport Sciences
GA AL4PW
UT WOS:000339115903233
ER
PT J
AU Baumgartner, N
Fausch, VG
Fager, EL
Gruse, MF
AF Baumgartner, Neal
Fausch, Virginia G.
Fager, Erin L.
Gruse, Matthew F.
TI Comparison of Abdominal Fat and Cardiorespiratory Fitness in US Air
Force Males
SO MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
LA English
DT Meeting Abstract
CT 61st Annual Meeting of the American-College-of-Sports-Medicine
CY APR 01-04, 2014
CL Atlanta, GA
SP Amer Coll Sports Med
C1 [Baumgartner, Neal; Fausch, Virginia G.; Fager, Erin L.; Gruse, Matthew F.] USAF Fitness Testing & Stand Unit, Randolph AFB, TX USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0195-9131
EI 1530-0315
J9 MED SCI SPORT EXER
JI Med. Sci. Sports Exerc.
PD MAY
PY 2014
VL 46
IS 5
SU 1
MA 2591
BP 706
EP 706
PG 1
WC Sport Sciences
SC Sport Sciences
GA AL4PW
UT WOS:000339115904396
ER
PT J
AU Fausett, B
Teneyuque, NR
Staat, B
Shields, A
AF Fausett, Bardett
Teneyuque, Nicholas R.
Staat, Barton
Shields, Andrea
TI Factors Associated With Pregnant Women's Perception of Aneuploidy Risk
SO OBSTETRICS AND GYNECOLOGY
LA English
DT Meeting Abstract
CT 62nd Annual Clinical Meeting of the
American-College-of-Obstetricians-and-Gynecologists
CY APR 26-30, 2014
CL Chicago, IL
SP Amer Coll Obstetricians & Gynecologists
C1 [Fausett, Bardett; Teneyuque, Nicholas R.; Staat, Barton; Shields, Andrea] Wilford Hall USAF Med Ctr, Lackland AFB, TX USA.
NR 0
TC 1
Z9 1
U1 0
U2 3
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0029-7844
EI 1873-233X
J9 OBSTET GYNECOL
JI Obstet. Gynecol.
PD MAY
PY 2014
VL 123
SU 1
BP 49S
EP 49S
PG 1
WC Obstetrics & Gynecology
SC Obstetrics & Gynecology
GA AL4CG
UT WOS:000339079900101
ER
PT J
AU Look, DC
Leedy, KD
Thomson, DB
Wang, BG
AF Look, David C.
Leedy, Kevin D.
Thomson, Darren B.
Wang, Buguo
TI High conductance in ultrathin films of ZnO
SO JAPANESE JOURNAL OF APPLIED PHYSICS
LA English
DT Article
AB Lattice-matched thin films of Ga-doped ZnO (GZO) grown on ZnO substrates have significantly better electrical properties than those grown on quartz substrates. At room temperature, mobility in a 125-nm-thick GZO layer grown by pulsed laser deposition on ZnO is increased by 30%, concentration by 50%, and conductivity by 95% over a similar layer grown on quartz. For ultrathin layers, the differences are much more dramatic: a 5-nm-thick GZO layer grown on ZnO has an excellent resistivity of 4 x 10(-4) Omega cm, whereas one grown on quartz exhibits no measurable conductance. (C) 2014 The Japan Society of Applied Physics
C1 [Look, David C.; Wang, Buguo] Wright State Univ, Semicond Res Ctr, Dayton, OH 45435 USA.
[Look, David C.] Wyle Labs Inc, Dayton, OH 45431 USA.
[Look, David C.; Leedy, Kevin D.; Thomson, Darren B.] US Air Force, Res Lab Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Look, DC (reprint author), Wright State Univ, Semicond Res Ctr, Dayton, OH 45435 USA.
EM david.look@wright.edu
FU DOE [DE-FG02-07ER46389]; AFOSR [FA9550-10-1-0079]; NSF [DMR-080-3276];
AFRL [HC1047-05-D-4005]
FX We wish to thank T. A. Cooper, W. Rice, and D. McFarland for technical
assistance, and B. Claflin for helpful discussions. Support of D. C. L.
is gratefully acknowledged from the following sources: DOE Grant
DE-FG02-07ER46389 (R. Kortan), AFOSR Grant FA9550-10-1-0079 (J. Hwang),
NSF Grant DMR-080-3276 (C. Ying), and AFRL Contract HC1047-05-D-4005 (D.
Tomich).
NR 18
TC 6
Z9 6
U1 2
U2 20
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0021-4922
EI 1347-4065
J9 JPN J APPL PHYS
JI Jpn. J. Appl. Phys.
PD MAY
PY 2014
VL 53
IS 5
SI 1
AR 05FJ01
DI 10.7567/JJAP.53.05FJ01
PG 3
WC Physics, Applied
SC Physics
GA AK3IG
UT WOS:000338316200081
ER
PT J
AU Landman, D
Yoder, D
AF Landman, Drew
Yoder, David
TI Wind-Tunnel Balance Calibration with Temperature Using Design of
Experiments
SO JOURNAL OF AIRCRAFT
LA English
DT Article; Proceedings Paper
CT 51st AIAA Aerospace Sciences Meeting and Exhibit Including the New
Horizons Forum and Aerospace Exposition
CY JAN 06-10, 2013
CL Grapevine, TX
SP AIAA
AB A statistical engineering approach featuring a formally designed experiment has recently been implemented for calibration of an internal, strain-gauged, wind-tunnel balance at Arnold Engineering Development Complex. It was necessary to consider a substantially wide variation in balance temperature for this particular application. The cost to perform a balance calibration with the balance equilibrium temperature as a completely randomized factor was therefore prohibitive. A design-of-experiments approach using a run schedule with restricted randomization, known commonly as a split-plot design, is being evaluated. For more than a decade, design of experiments has been implemented in wind-tunnel strain-gauge balance calibration processes. Calibration with design of experiments is a characterization process where data are collected and analyzed using statistical methods, allowing conclusions to be drawn with chosen levels of confidence and power. A sequential approach to new balance calibration using existing hardware was demonstrated using a crossed design. A modified, two-active-factor, Box-Behnken design was executed at three temperature levels, and a second-order regression model was constructed in all factors. When compared to the traditional approach, a minimum 50% reduction in calibration duration and a reduction in overall residual error were demonstrated.
C1 [Landman, Drew] Old Dominion Univ, Dept Mech & Aerosp Engn, ECSB 1311, Norfolk, VA 23529 USA.
[Yoder, David] Arnold Air Force Base, US Air Force & Aerosp Testing Alliance, IT&E Flight Syst, Arnold AFB, TN 37389 USA.
RP Landman, D (reprint author), Old Dominion Univ, Dept Mech & Aerosp Engn, ECSB 1311, Norfolk, VA 23529 USA.
NR 11
TC 1
Z9 2
U1 1
U2 8
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0021-8669
EI 1533-3868
J9 J AIRCRAFT
JI J. Aircr.
PD MAY-JUN
PY 2014
VL 51
IS 3
BP 841
EP 848
DI 10.2514/1.C032416
PG 8
WC Engineering, Aerospace
SC Engineering
GA AJ8UT
UT WOS:000337984100013
ER
PT J
AU Chen, PC
Ritz, E
Lindsley, N
AF Chen, P. C.
Ritz, Erich
Lindsley, Ned
TI Nonlinear Flutter Analysis for the Scaled F-35 with Horizontal-Tail Free
Play
SO JOURNAL OF AIRCRAFT
LA English
DT Article
ID EXTERNAL STORES; EXCITATION; LOADS
AB A nonlinear flutter analysis is performed to study the limit-cycle-oscillation characteristics of an F-35 wind-tunnel model with horizontal-tail free-play effects using a direct simulation method. The result of this study is first validated with the wind-tunnel data. Then, a set of free-play design charts is generated to investigate the limit-cycle-oscillation-occurrence domain at various free-play angles and hinge moments of the horizontal tail. It is found that, as long as the horizontal tail is unloaded, the limit-cycle oscillation is inevitable even with a very small free-play angle. Furthermore, the free-play angle cannot be the only significant parameter involved in the free-play criteria. Therefore, it is suggested that an improved military specification for free-play limits of all-movable control surfaces be established. This effort will make a substantial impact on the control-surface design that may lead to a paradigm shift in the design criteria of aircraft structure.
C1 [Chen, P. C.; Ritz, Erich] ZONA Technol, Scottsdale, AZ 85258 USA.
[Lindsley, Ned] US Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Chen, PC (reprint author), ZONA Technol, 9489 E Ironwood Sq Dr, Scottsdale, AZ 85258 USA.
EM PC@zonatech.com; Erich@zonatech.com; Ned.Lindsley@wpafb.af.mil
FU U.S. Air Force Research Laboratory [FA8650-09-C-3935]
FX This work was made possible through a contract (contract number
FA8650-09-C-3935) supported by the U.S. Air Force Research Laboratory.
It was presented as Paper IFASD-2013-2B at the International Forum on
Aeroelasticity and Structural Dynamics, Berlin, 24-26 June 2013. The
authors thank Carlton Schlomach of Lockheed Martin Aeronautics
Corporation for providing the scaled F-35 Nastran model and wind-tunnel
data.
NR 17
TC 1
Z9 1
U1 1
U2 4
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0021-8669
EI 1533-3868
J9 J AIRCRAFT
JI J. Aircr.
PD MAY-JUN
PY 2014
VL 51
IS 3
BP 883
EP 889
DI 10.2514/1.C032501
PG 7
WC Engineering, Aerospace
SC Engineering
GA AJ8UT
UT WOS:000337984100017
ER
PT J
AU Stanford, B
Beran, P
Bhatia, M
AF Stanford, Bret
Beran, Philip
Bhatia, Manav
TI Aeroelastic Topology Optimization of Blade-Stiffened Panels
SO JOURNAL OF AIRCRAFT
LA English
DT Article; Proceedings Paper
CT 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and
Materials Conference
CY APR 08-11, 2013
CL Boston, MA
SP AIAA, ASME, ASCE, AHS, ASC
ID STRUCTURAL OPTIMIZATION; PLATE STRUCTURES; SHELL STRUCTURES; FLUTTER;
DESIGN; LAYOUT; SHAPE
AB Metallic blade-stiffened panels are optimized for various eigenvalue metrics of interest to the aerospace community. This is done via solid isotropic material with penalization-based topology optimization: the stiffeners are discretized into finite elements, and each element is assigned a design variable, which may vary from 0 (void) to 1 (solid). A known issue with eigenvalue-based optimization is discontinuities due to mode switching, which may be avoided through a series of eigenvalue separation constraints, or (more challenging, but less restrictive) a bound method with mode tracking. Both methods are demonstrated to obtain optimal stiffener topologies for panel buckling, but only the former is used for aeroelastic panel-flutter problems. Satisfactory flutter optimal results are obtained, but the work concludes with a discussion of the challenges associated with the use of a bound method for aeroelastic problems, with specific complications posed by the advent of hump modes.
C1 [Stanford, Bret; Bhatia, Manav] US Air Force Res Lab, Universal Technol Corp, Wright Patterson AFB, OH 45433 USA.
[Beran, Philip] US Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Stanford, B (reprint author), US Air Force Res Lab, Universal Technol Corp, Wright Patterson AFB, OH 45433 USA.
EM bretkennedystanford@gmail.com; philip.beran@wpafb.af.mil;
manav.bhatia.ctr@wpafb.af.mil
NR 27
TC 3
Z9 4
U1 1
U2 10
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0021-8669
EI 1533-3868
J9 J AIRCRAFT
JI J. Aircr.
PD MAY-JUN
PY 2014
VL 51
IS 3
BP 938
EP 944
DI 10.2514/1.C032500
PG 7
WC Engineering, Aerospace
SC Engineering
GA AJ8UT
UT WOS:000337984100022
ER
PT J
AU Gao, Y
Zardareh, SZ
Yang, X
Nan, TX
Zhou, ZY
Onabajo, M
Liu, M
Aronow, A
Mahalingam, K
Howe, BM
Brown, GJ
Sun, NX
AF Gao, Yuan
Zardareh, Saba Zare
Yang, Xi
Nan, Tian Xiang
Zhou, Zi Yao
Onabajo, Marvin
Liu, Ming
Aronow, Andrew
Mahalingam, Krishnamurthy
Howe, Brandon M.
Brown, Gail J.
Sun, Nian X.
TI Significantly Enhanced Inductance and Quality Factor of GHz Integrated
Magnetic Solenoid Inductors With FeGaB/Al2O3 Multilayer Films
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article
DE FeGaB; high Q; integrated magnetic inductor; multilayer film; radio
frequency (RF) application; solenoid
ID DC-DC CONVERTER; ON-CHIP INDUCTORS; MICROPROCESSOR POWER DELIVERY;
SPIRAL INDUCTORS; PLANAR INDUCTOR; GRANULAR FILMS; FABRICATION; CORE;
PERFORMANCE; FREQUENCY
AB We report new high quality factor (Q) integrated GHz magnetic inductors based on solenoid structures with FeGaB/Al2O3 multilayer films, which show significantly enhanced inductance and quality factor at GHz frequencies over their air core counterparts. These inductors show an excellent high-frequency performance with a wide operation frequency range 0.5-2.5GHz, in which the inductance is flat and the peak quality factor can reach similar to 20. The inductance of the magnetic inductor shows >100% enhancement compared with that of the same size air core inductor. These novel GHz inductors with high inductance and Q enhancement show great promise for applications in radio frequency integrated circuits.
C1 [Gao, Yuan; Zardareh, Saba Zare; Nan, Tian Xiang; Zhou, Zi Yao; Onabajo, Marvin; Sun, Nian X.] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
[Yang, Xi] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA.
[Liu, Ming; Aronow, Andrew; Mahalingam, Krishnamurthy; Howe, Brandon M.; Brown, Gail J.] Air Force Res Lab, Wright Patterson AFB, OH 45431 USA.
RP Gao, Y (reprint author), Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
EM gao.yuan2@husky.neu.edu; zare.s@husky.neu.edu; yangxi0627@gmail.com;
nan.t@husky.neu.edu; zhou.zi@husky.neu.edu; m.onabajo@neu.edu;
ming.liu.ctr@wpafb.af.mil; andrew.aronow.ctr@wpafb.af.mil;
krishnamurthy.mahalingam.ctr@wpafb.af.mil; brandon.howe@wpafb.af.mil;
n.sun@neu.edu
RI Zhou, Ziyao/N-8398-2015; Nan, Tianxiang/A-8020-2016; Gao,
Yuan/E-4277-2016; Yang, Xi/E-6042-2016; Sun, Nian Xiang/F-9590-2010;
Liu, Ming/B-4143-2009
OI Zhou, Ziyao/0000-0002-2389-1673; Gao, Yuan/0000-0002-2444-1180; Sun,
Nian Xiang/0000-0002-3120-0094; Liu, Ming/0000-0002-6310-948X
FU SRC; Center for Nanoscale Systems (CNS), Harvard University, Cambridge,
MA, USA; National Nanotechnology Infrastructure Network; National
Science Foundation [ECS-0335765]
FX This work was supported in part by SRC, in part by the Center for
Nanoscale Systems (CNS), Harvard University, Cambridge, MA, USA, in part
by the National Nanotechnology Infrastructure Network, and in part by
the National Science Foundation under Award ECS-0335765. The review of
this paper was arranged by Editor A. M. Ionescu.
NR 48
TC 12
Z9 12
U1 1
U2 18
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9383
EI 1557-9646
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD MAY
PY 2014
VL 61
IS 5
BP 1470
EP 1476
DI 10.1109/TED.2014.2313095
PG 7
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA AJ5UD
UT WOS:000337753300037
ER
PT J
AU Connor, HK
Zesta, E
Ober, DM
Raeder, J
AF Connor, H. K.
Zesta, E.
Ober, D. M.
Raeder, J.
TI The relation between transpolar potential and reconnection rates during
sudden enhancement of solar wind dynamic pressure: OpenGGCM-CTIM results
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
DE MI coupling system; Magnetic reconnection; Cross Polar Cap Potential;
MHD modeling
ID IONOSPHERIC CONDUCTIVITY; MHD SIMULATIONS; AURORAL OVAL; JANUARY 10;
IMAGE FUV; POLAR; SATURATION; MAGNETOSPHERE; MAGNETOTAIL; MODEL
AB This study investigates how solar wind energy is deposited into the magnetosphere-ionosphere system during sudden enhancements of solar wind dynamic pressure (Psw), using the coupled Open Geospace General Circulation Model-Coupled Ionosphere Thermosphere Model (OpenGGCM-CTIM) 3-D global magnetosphere-ionosphere-thermosphere model. We simulate three unique events of solar wind pressure enhancements that occurred during negative, near-zero, and positive interplanetary magnetic field (IMF) Bz. Then, we examine the behavior of the dayside and nightside reconnection rates and quantify their respective contributions to cross polar cap potential (CPCP), a proxy of ionospheric plasma convection strength. The modeled CPCP increases after a Psw enhancement in all three cases, which agrees well with observations from the Defense Meteorological Satellite Program spacecraft and predictions from the assimilative mapping of ionospheric electrodynamics technique. In the OpenGGCM-CTIM model, dayside reconnection increases within 9-13min of the pressure impact, while nightside reconnection intensifies about 13-25min after the pressure increase. As the strong Psw compresses the dayside magnetosheath and, subsequently, the magnetotail, their magnetic fields intensify and activate stronger antiparallel reconnection on the dayside magnetopause first and near the central plasma sheet second. For southward IMF, dayside reconnection contributes to the CPCP enhancement 2-4 times more than nightside reconnection. For northward IMF, the dayside contribution weakens, and nightside reconnection contributes more to the CPCP enhancement. We find that high-latitude magnetopause reconnection during northward IMF produces sunward ionospheric plasma convection, which decreases the typical dawn-to-dusk ionosphere electric field. This results in a weaker dayside reconnection contribution to the CPCP during northward IMF.
C1 [Connor, H. K.] Univ New Mexico, Configurable Space Microsyst Innovat & Applicat, Albuquerque, NM 87131 USA.
[Zesta, E.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Connor, H. K.; Ober, D. M.] Air Force Res Lab, Kirtland AFB, NM USA.
[Raeder, J.] Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.
RP Connor, HK (reprint author), Univ New Mexico, Configurable Space Microsyst Innovat & Applicat, Albuquerque, NM 87131 USA.
EM hyunju.connor@cosmiac.org
FU Air Force Office of Scientific Research [11RV09COR]
FX The simulation data of this paper are available upon request. This work
was supported by a grant LBIR# 11RV09COR from the Air Force Office of
Scientific Research. We thank C. Y. Huang and Y.-J. Su for useful
discussions.
NR 50
TC 2
Z9 2
U1 3
U2 8
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD MAY
PY 2014
VL 119
IS 5
BP 3411
EP 3429
DI 10.1002/2013JA019728
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AJ4DS
UT WOS:000337622100016
ER
PT J
AU Holmes, JM
Johnsen, MG
Deehr, CS
Zhou, XY
Lorentzen, DA
AF Holmes, J. M.
Johnsen, M. G.
Deehr, C. S.
Zhou, X. -Y.
Lorentzen, D. A.
TI Circumpolar ground-based optical measurements of proton and electron
shock aurora
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
DE shock; aurora; proton; electron; photometer; scanning
ID INTERPLANETARY MAGNETIC-FIELD; WIND PRESSURE PULSE; GEOMAGNETIC SUDDEN
COMMENCEMENT; SOLAR-WIND; JANUARY 10; HIGH-LATITUDE; DAYSIDE AURORA;
B-Y; MAGNETOSPHERIC RESPONSE; IONOSPHERIC SIGNATURES
AB Meridian scanning photometer (MSP) data are combined with global ultraviolet images from the Polar Ultraviolet Imager instrument to estimate the timing and propagation speed of shock auroras previously studied using solely space-based ultraviolet auroral imagery. The multispectral nature of the MSPs, including the presence of a Balmer beta channel, enables the discrimination between proton and electron aurora. Following a near-magnetic noon onset, the occurrence of auroral emissions created by shocked precipitating protons and electrons is observed to propagate tailward, along the auroral oval with speeds of several km/s, consistent with the shock propagation speed in the solar wind. In two cases, shock aurora propagation speeds along the auroral oval determined from satellite imagery are confirmed, to within calculated uncertainties, with ground-based timing. The majority of instruments detect low-energy discrete auroral arcs poleward of diffuse, higher-energy aurora. Evidence of a previously reported two-pulse proton aurora shock onset is detected at some, but not all, locations.
C1 [Holmes, J. M.; Lorentzen, D. A.] Univ Ctr Svalbard, Longyearbyen, Norway.
[Johnsen, M. G.] Univ Tromso, Dept Phys & Technol, Tromso, Norway.
[Deehr, C. S.] Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA.
[Lorentzen, D. A.] Birkeland Ctr Space Sci, Bergen, Norway.
RP Holmes, JM (reprint author), US Air Force, Space Vehicles Directorate, Res Lab, Kirtland AFB, NM 87117 USA.
EM jeffrey.holmes@kirtland.af.mil
OI Holmes, Jeffrey/0000-0003-1025-6694
FU Air Force Office of Scientific Research; Research Council of Norway/CoE
[223252/F50]; Research Council of Norway [195385/V30]; National Science
Foundation [ATM-0334800]; Canadian Space Agency
FX This effort was supported in part by the Air Force Office of Scientific
Research. It was also supported by the Research Council of Norway/CoE
under contract 223252/F50 and by the Research Council of Norway under
contract 195385/V30. C.S.D. acknowledges support from the National
Science Foundation Award ATM-0334800. We thank the principal
investigator on the SWE investigation, K. Ogilvie, and the MFI
investigation on WIND, R. P. Leppig, for use of the data. Thanks also to
POLAR principal investigator G. Parks for use of the UVI data.
Operational support for the NORSTAR (formerly CANOPUS) instrument array
was provided by the Canadian Space Agency. We acknowledge the efforts of
Fokke Creutzberg who was principally responsible for the scientific
operation of the CANOPUS meridian scanning photometer array. We are also
grateful to Greg Baker and Emma Spanswick for providing data and helpful
instrument details. We thank Tromso Geophysical Observatory of UiT, The
Arctic University of Norway, for providing the magnetometer data from
Longyearbyen. The authors also thank I. R. Mann, D. K. Milling and the
rest of the CARISMA team for Rankin Inlet magnetometer data. CARISMA is
operated by the University of Alberta, funded by the Canadian Space
Agency. Other magnetometer data were obtained via the SPIDR database,
maintained by the National Geophysical Data Center (NGDC) of the
National Atmospheric and Oceanographic Administration (NOAA). We
acknowledge instrument custodians for individual magnetometer stations
and for the MSPs at Danmarkshavn and Ny-Alesund. All data used in this
work are freely available from the relevant networks and/or
institutions. Thanks also to Espen Trondsen for providing University of
Oslo MSP data. J.M.H. thanks Dirk Lummerzheim and colleagues at Air
Force Research Laboratory for helpful software and discussions.
NR 91
TC 2
Z9 2
U1 1
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD MAY
PY 2014
VL 119
IS 5
BP 3895
EP 3914
DI 10.1002/2013JA019574
PG 20
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AJ4DS
UT WOS:000337622100049
ER
PT J
AU Titov, E
Burt, J
Josyula, E
AF Titov, E.
Burt, J.
Josyula, E.
TI Satellite Drag Uncertainties Associated with Atmospheric Parameter
Variations at Low Earth Orbits
SO JOURNAL OF SPACECRAFT AND ROCKETS
LA English
DT Article
AB An uncertainty quantification and sensitivity analysis computational technique based on the Monte Carlo method has been used for Cube Sat drag studies for exploring issues in satellite decommissioning. These studies included computational simulations for altitudes of 100 and 400 km using the Hypersonic Aerothermodynamic Particle code, a direct simulation Monte Carlo solver with uncertainty quantification and sensitivity analysis capabilities allowing for variation of the solver input quantities, propagation of the input parameter variations through the model, and prediction of output uncertainties, all in an automated manner. Satellite atmospheric drag was identified as the main parameter of interest because uncertainty in drag may alter the satellite orbit and influence its lifespan. This study considers relative contributions of the input and model parameter uncertainties to the resulting satellite drag uncertainty, which enable reduction of the initial parameter space to a few major contributors; these major contributions are then examined in detail. The effect of surface thermal accommodation coefficient is one of the parameters considered, and it is found that its contribution has opposite effects on the drag force in free molecular and collisional flows. The study demonstrates the ability of the numerical techniques to solve the flow cases for a specified accuracy.
C1 [Titov, E.; Burt, J.; Josyula, E.] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Titov, E (reprint author), Sierra Nevada Corp, Sparks, NV 89434 USA.
EM eugene.titov@sncorp.com
FU U.S. Department of Defense, High Performance Computing Modernization
Office
FX This research was supported by the U.S. Department of Defense, High
Performance Computing Modernization Office. Computer resources were
provided by the U.S. Department of Defense at US Army Engineer Research
and Development Center (ERDC), Vicksburg, Mississippi. Helpful
discussions with E. Sutton are gratefully acknowledged.
NR 18
TC 1
Z9 1
U1 1
U2 8
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0022-4650
EI 1533-6794
J9 J SPACECRAFT ROCKETS
JI J. Spacecr. Rockets
PD MAY-JUN
PY 2014
VL 51
IS 3
BP 884
EP 892
DI 10.2514/1.A32686
PG 9
WC Engineering, Aerospace
SC Engineering
GA AJ2NV
UT WOS:000337495500020
ER
PT J
AU Co, TC
Black, JT
AF Co, Thomas C.
Black, Jonathan T.
TI Responsiveness in Low Orbits Using Electric Propulsion
SO JOURNAL OF SPACECRAFT AND ROCKETS
LA English
DT Article
AB One promising option for space operational responsiveness is orbital maneuvering. In low orbit, a maneuverable spacecraft can provide valuable benefits such as better coverage properties, reduced revisit times, selectable targets, and local overflight times. Such maneuvers are not common due to the high cost of chemical propulsion. The more recent paradigm of operationally responsive space is to rapidly launch a small inexpensive asset and use it in a short disposable fashion. This concept relies on drastically reducing the cost of launch, yet it remains the most expensive piece, and so additional cost savings can be realized by minimizing the need for launches. Electric propulsion has been considered as an efficient alternative to chemical propulsion. With technological advances, electric propulsion can provide responsiveness in a timely propellant-efficient manner without requiring repeated launches to satisfy multiple missions. This study shows the control algorithm for a single low-Earth satellite equipped with the proper electric propulsion to overfly any target inside its coverage area in as little as 34 h for 1.8% of its propellant budget. A comprehensive survey to quantify global reach requirements is provided, and the optimal time and propellant solutions are explored. The results strongly support the argument that electric propulsion could be a key enabler in responsive operations.
C1 [Co, Thomas C.; Black, Jonathan T.] Air Force Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Co, TC (reprint author), US Air Force, Dept Aeronaut Engn, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
RI Black, Jonathan/R-4875-2016
OI Black, Jonathan/0000-0001-9315-3994
NR 12
TC 6
Z9 6
U1 1
U2 8
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0022-4650
EI 1533-6794
J9 J SPACECRAFT ROCKETS
JI J. Spacecr. Rockets
PD MAY-JUN
PY 2014
VL 51
IS 3
BP 938
EP 945
DI 10.2514/1.A32405
PG 8
WC Engineering, Aerospace
SC Engineering
GA AJ2NV
UT WOS:000337495500027
ER
PT J
AU Cesul, BT
Mall, S
Matson, L
AF Cesul, B. T.
Mall, S.
Matson, L.
TI Photometric Response of Illite After Simulated Space Exposure
SO JOURNAL OF SPACECRAFT AND ROCKETS
LA English
DT Article
C1 [Cesul, B. T.; Mall, S.] US Air Force, Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
[Matson, L.] US Air Force, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Mall, S (reprint author), US Air Force, Inst Technol, Dept Aeronaut & Astronaut, Bldg 640,2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM brandon.cesul@us.af.mil; Shankar.Mall@afit.edu;
lawrence.matson@wpafb.af.mil
NR 11
TC 0
Z9 0
U1 1
U2 1
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0022-4650
EI 1533-6794
J9 J SPACECRAFT ROCKETS
JI J. Spacecr. Rockets
PD MAY-JUN
PY 2014
VL 51
IS 3
BP 983
EP 986
DI 10.2514/1.A32671
PG 4
WC Engineering, Aerospace
SC Engineering
GA AJ2NV
UT WOS:000337495500032
ER
PT J
AU Qin, JQ
Pasko, VP
McHarg, MG
Stenbaek-Nielsen, HC
AF Qin, Jianqi
Pasko, Victor P.
McHarg, Matthew G.
Stenbaek-Nielsen, Hans C.
TI Plasma irregularities in the D-region ionosphere in association with
sprite streamer initiation
SO NATURE COMMUNICATIONS
LA English
DT Article
ID ELECTRIC-FIELD; IONIZATION; VIDEO
AB Sprites are spectacular optical emissions in the mesosphere induced by transient lightning electric fields above thunderstorms. Although the streamer nature of sprites has been generally accepted, how these filamentary plasmas are initiated remains a subject of active research. Here we present observational and modelling results showing solid evidence of pre-existing plasma irregularities in association with streamer initiation in the D-region ionosphere. The video observations show that before streamer initiation, kilometre-scale spatial structures descend rapidly with the overall diffuse emissions of the sprite halo, but slow down and stop to form the stationary glow in the vicinity of the streamer onset, from where streamers suddenly emerge. The modelling results reproduce the sub-millisecond halo dynamics and demonstrate that the descending halo structures are optical manifestations of the pre-existing plasma irregularities, which might have been produced by thunderstorm or meteor effects on the D-region ionosphere.
C1 [Qin, Jianqi; Pasko, Victor P.] Penn State Univ, Dept Elect Engn, Commun & Space Sci Lab, University Pk, PA 16802 USA.
[McHarg, Matthew G.] US Air Force Acad, Dept Phys, Colorado Springs, CO 80840 USA.
[Stenbaek-Nielsen, Hans C.] Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA.
RP Qin, JQ (reprint author), Penn State Univ, Dept Elect Engn, Commun & Space Sci Lab, University Pk, PA 16802 USA.
EM jianqiqin@psu.edu
RI Qin, Jianqi/A-2509-2013; Pasko, Victor/S-6024-2016
OI Qin, Jianqi/0000-0003-2213-9305;
FU Defense Advanced Research Projects Agency; Aeronomy Program of the
National Science Foundation
FX This research was supported by the Defense Advanced Research Projects
Agency and by the Aeronomy Program of the National Science Foundation.
We thank J. Mathews for useful discussions about possible relation
between sprites and meteors.
NR 30
TC 17
Z9 17
U1 1
U2 20
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD MAY
PY 2014
VL 5
AR 3740
DI 10.1038/ncomms4740
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AJ0SK
UT WOS:000337366100002
PM 24806314
ER
PT J
AU Wisniewski, MG
Church, BA
Mercado, E
AF Wisniewski, Matthew G.
Church, Barbara A.
Mercado, Eduardo, III
TI Individual differences during acquisition predict shifts in
generalization
SO BEHAVIOURAL PROCESSES
LA English
DT Article
DE Generalization gradient; Peak shift; Signal detection theory; Individual
differences; Perceptual learning; Artificial neural network
ID PEAK SHIFT; STIMULUS-GENERALIZATION; POSTDISCRIMINATION GRADIENTS;
BEHAVIORAL CONTRAST; TEMPORAL DYNAMICS; FACE RECOGNITION;
NEURAL-NETWORKS; DISCRIMINATION; DIMENSION; HUMANS
AB Learning to distinguish subtle differences in objects or events can impact how one generalizes. In some cases, training can cause novel events to appear more familiar or attractive than those actually experienced during training: the peak shift effect. This study examined whether individual differences in learning led to systematic patterns of generalization. Participants were trained to identify simulated bird-songs, and then tested on their ability to identify a target song presented among several similar songs that differed in pitch. Initial analysis showed that those attaining moderate proficiency at discriminating songs during training were more likely to shift than those performing poorly or proficiently. However, a neural network trained to output individuals' gradient dynamics using only performance during training as input found an additional set of training variables that predicted shift. Specifically, one subset of shifters had highly conservative response biases accompanied by very little change to perceptual sensitivity in training. These findings suggest that discrimination learning may only lead to generalization shifts in some individuals, and that all individuals who shift may not do so for the same reason. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Wisniewski, Matthew G.; Church, Barbara A.; Mercado, Eduardo, III] SUNY Buffalo, Buffalo, NY 14260 USA.
RP Wisniewski, MG (reprint author), Bldg 441,2610 7th St, Wright Patterson AFB, OH 45433 USA.
EM Matthew.Wisniewski.ctr@us.af.mil
OI Church, Barbara/0000-0002-1392-9121
FU NSF [SBE 0542013, SBE 0835976]; Oak Ridge Institute for Science and
Education; Temporal Dynamics of Learning Center
FX This work was supported in part by NSF Grants SBE 0542013 to the
Temporal Dynamics of Learning Center and SBE 0835976 to CELEST, two NSF
Science of Learning Centers. MGW was supported by a fellowship from the
Oak Ridge Institute for Science and Education and a student grant from
the Temporal Dynamics of Learning Center. We thank Joanna Solis, Rachel
Tan, Amanda Haskell, and Lucas Lee for assistance with data collection,
Estella Liu for help with design, Lauren Guillette and Ronald Weisman
for comments on the project, and Alexandria Zakrzewski and Joseph Boomer
for comments on previous versions of this manuscript.
NR 84
TC 1
Z9 1
U1 1
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0376-6357
EI 1872-8308
J9 BEHAV PROCESS
JI Behav. Processes
PD MAY
PY 2014
VL 104
SI SI
BP 26
EP 34
DI 10.1016/j.beproc.2014.01.007
PG 9
WC Psychology, Biological; Behavioral Sciences; Zoology
SC Psychology; Behavioral Sciences; Zoology
GA AI4HK
UT WOS:000336826100005
PM 24445021
ER
PT J
AU Bray, KR
Jiao, CQ
DeCerbo, JN
AF Bray, Kevin R.
Jiao, Charles Q.
DeCerbo, Jennifer N.
TI Influence of carrier gas on the nucleation and growth of Nb nanoclusters
formed through plasma gas condensation
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID SIZE CONTROL; CLUSTERS; IONS
AB Niobium nanoclusters with an average diameter from 2 nm to 10 nm were produced using a plasma gas condensation process. Cluster size and concentration can be tuned by controlling the sputter source current, aggregation length, and gas flow rate. In this paper, the effects of the addition of helium to the cluster growth process will be examined. Process parameters do not affect the cluster formation and growth independently; their influence on cluster formation can be either cumulative or competing. The results from the helium flow rate dependence study emphasize the competing mechanism present during these processes. Examining the nucleation and growth over a wide combination of parameters provided insight into their interactions and the impact on the growth process. This knowledge will enhance the ability to create nanoclusters with desired size dispersions. (C) 2014 American Vacuum Society.
C1 [Bray, Kevin R.; Jiao, Charles Q.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
[DeCerbo, Jennifer N.] AFRL RQQE, Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Bray, KR (reprint author), Universal Energy Syst Inc, 4401 Dayton Xenia Rd, Dayton, OH 45432 USA.
EM jennifer.decerbo@us.af.mil
FU Air Force Office of Scientific Research
FX This work was supported by the Air Force Office of Scientific Research.
NR 21
TC 1
Z9 2
U1 2
U2 4
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD MAY
PY 2014
VL 32
IS 3
AR 031805
DI 10.1116/1.4871366
PG 5
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA AI7IV
UT WOS:000337061900051
ER
PT J
AU Jantzen, RT
Taira, K
Granlund, KO
Ol, MV
AF Jantzen, Ryan T.
Taira, Kunihiko
Granlund, Kenneth O.
Ol, Michael V.
TI Vortex dynamics around pitching plates
SO PHYSICS OF FLUIDS
LA English
DT Article
ID IMMERSED BOUNDARY METHOD; LOW REYNOLDS-NUMBERS; WINGS; GENERATION;
EVOLUTION; FLOWS; PANEL
AB Vortex dynamics of wakes generated by rectangular aspect-ratio 2 and 4 and two-dimensional pitching flat plates in free stream are examined with direct numerical simulation and water tunnel experiments. Evolution of wake vortices comprised of tip, leading-edge, and trailing-edge vortices is compared with force history for a range of pitch rates. The plate pivots about its leading edge with reduced frequency from p/8 to p/48, which corresponds to pitching over 1 to 6 chord lengths of travel. Computations have reasonable agreement with experiments, despite large differences in Reynolds number. Computations show that the tip effects are confined initially near the wing tips, but begin to strongly affect the leading-edge vortex as the motion of the plate proceeds, with concomitant effects on lift and drag history. Scaling relations based on reduced frequency are shown to collapse aerodynamic force history for the various pitch rates. (C) 2014 AIP Publishing LLC.
C1 [Jantzen, Ryan T.; Taira, Kunihiko] Florida State Univ, Dept Mech Engn, Tallahassee, FL 32310 USA.
[Jantzen, Ryan T.; Taira, Kunihiko] Florida State Univ, Florida Ctr Adv Aeroprop, Tallahassee, FL 32310 USA.
[Granlund, Kenneth O.; Ol, Michael V.] US Air Force, Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
RP Jantzen, RT (reprint author), Florida State Univ, Dept Mech Engn, Tallahassee, FL 32310 USA.
EM rtj09@my.fsu.edu; ktaira@fsu.edu; kenneth.granlund.1.ctr@us.af.mil;
michael.ol@us.af.mil
OI Taira, Kunihiko/0000-0002-3762-8075
FU USAF Air Vehicles Directorate Summer Research and Development Program;
ASEE Summer Faculty Fellowship Program; Florida State University
FX R.T.J. and K.T. were supported by the 2012 USAF Air Vehicles Directorate
Summer Research and Development Program and the 2013 ASEE Summer Faculty
Fellowship Program during their stays at the Wright-Patterson Air Force
Base. R.T.J. also acknowledges the Aero-Propulsion, Mechatronics, and
Energy Fellowship from the Florida State University.
NR 31
TC 5
Z9 5
U1 2
U2 16
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-6631
EI 1089-7666
J9 PHYS FLUIDS
JI Phys. Fluids
PD MAY
PY 2014
VL 26
IS 5
AR 053606
DI 10.1063/1.4879035
PG 17
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA AI7TZ
UT WOS:000337103900028
ER
PT J
AU Murdock, AD
Berseus, O
Hervig, T
Strandenes, G
Lunde, TH
AF Murdock, Alan D.
Berseus, Olle
Hervig, Tor
Strandenes, Geir
Lunde, Turid Helen
TI WHOLE BLOOD: THE FUTURE OF TRAUMATIC HEMORRHAGIC SHOCK RESUSCITATION
SO SHOCK
LA English
DT Article
DE Whole blood; component blood therapy; leukocyte reduced blood; low-titer
type O blood; randomized prospective trial
ID OXYGEN-SATURATION PREDICTS; MASSIVE TRANSFUSION; COMBAT CASUALTIES;
ROOM-TEMPERATURE; CRITICALLY-ILL; OVERNIGHT HOLD; PLASMA; MORTALITY;
PLATELETS; INJURIES
AB Toward the end of World War I and during World War II, whole-blood transfusions were the primary agent in the treatment of military traumatic hemorrhage. However, after World War II, the fractionation of whole blood into its components became widely accepted and replaced whole-blood transfusion to better accommodate specific blood deficiencies, logistics, and financial reasons. This transition occurred with very few clinical trials to determine which patient populations or scenarios would or would not benefit from the change. A smaller population of patients with trauma hemorrhage will require massive transfusion (>10 U packed red blood cells in 24 h) occurring in 3% to 5% of civilian and 10% of military traumas. Advocates for hemostatic resuscitation have turned toward a ratio-balanced component therapy using packed red blood cells-fresh frozen plasmaYplatelet concentration in a 1:1:1 ratio due to whole-blood limited availability. However, this "reconstituted'' whole blood is associated with a significantly anemic, thrombocytopenic, and coagulopathic product compared with whole blood. In addition, several recent military studies suggest a survival advantage of early use of whole blood, but the safety concerns have limited is widespread civilian use. Based on extensive military experience as well as recent published literature, low-titer leukocyte reduced cold-store type O whole blood carries low adverse risks and maintains its hemostatic properties for up to 21 days. A prospective randomized trial comparing whole blood versus ratio balanced component therapy is proposed with rationale provided.
C1 [Murdock, Alan D.] Univ Pittsburgh, Med Ctr, Dept Surg, Pittsburgh, PA USA.
[Murdock, Alan D.] Air Force Med Operat Agcy, Lackland AFB, TX USA.
[Berseus, Olle] Orebro Univ Hosp, Dept Transfus Med, Orebro, Sweden.
[Hervig, Tor; Strandenes, Geir; Lunde, Turid Helen] Haukeland Hosp, Dept Immunol & Transfus Med, N-5021 Bergen, Norway.
[Hervig, Tor] Univ Bergen, Inst Clin Sci, Bergen, Norway.
[Strandenes, Geir] Norwegian Navy Special Command Forces, Bergen, Norway.
RP Murdock, AD (reprint author), UPMC PUH 1263 1, Div Trauma & Gen Surg, USAF, MC, 200 Lothrop St, Pittsburgh, PA 15213 USA.
EM murdockad@upmc.edu
NR 56
TC 22
Z9 22
U1 1
U2 9
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA TWO COMMERCE SQ, 2001 MARKET ST, PHILADELPHIA, PA 19103 USA
SN 1073-2322
EI 1540-0514
J9 SHOCK
JI Shock
PD MAY
PY 2014
VL 41
SU 1
BP 62
EP 69
DI 10.1097/SHK.0000000000000134
PG 8
WC Critical Care Medicine; Hematology; Surgery; Peripheral Vascular Disease
SC General & Internal Medicine; Hematology; Surgery; Cardiovascular System
& Cardiology
GA AI6EX
UT WOS:000336965100013
PM 24662782
ER
PT J
AU Kah, JCY
Grabinski, C
Untener, E
Garrett, C
Chen, J
Zhu, D
Hussain, SM
Hamad-Schifferli, K
AF Kah, James Chen Yong
Grabinski, Christin
Untener, Emily
Garrett, Carol
Chen, John
Zhu, David
Hussain, Saber M.
Hamad-Schifferli, Kimberly
TI Protein Coronas on Gold Nanorods Passivated with Amphiphilic Ligands
Affect Cytotoxicity and Cellular Response to Penicillin/Streptomycin
SO ACS NANO
LA English
DT Article
DE gold nanorods; amphiphilic ligands; protein corona; cytotoxicity;
nanotoxicology; penicillin; streptomycin
ID SURFACE-CHEMISTRY; SIGNALING PATHWAYS; NANOPARTICLE SIZE; TOXICITY;
ADSORPTION; STABILITY; SERUM; TRANSFECTION; RELEASE; ORIGIN
AB We probe how amphiphilic ligands (ALs) of four different types affect the formation of protein coronas on gold nanorods (NRs) and their impact on cellular response. Hits coated with cetyltrimethylammonium bromide were ligand exchanged with polyoxyethylene[10]cetyl ether, oligofectamine, and phosphatidylserine (PS). Protein coronas from equine serum (ES) were formed on these NR-ALs, and their colloidal stability, as well as cell uptake, proliferation, oxidative stress, and gene expression, were examined. We find that the protein corona that forms and its colloidal stability are affected by AL type and that the cellular response to these NR-AL-coronas (NR-AL-ES) is both ligand and corona dependent. We also find that the presence of common cell culture supplement penicillin/streptomycin can impact the colloidal stability and cellular response of NR-AL and NR-AL-ES, showing that the cell response is not necessarily inert to pen/strep when in the presence of nanoparticles. Although the protein corona is what the cells see, the underlying surface ligands evidently play an important role in shaping and defining the physical characteristics of the corona, which ultimately impacts the cellular response. Further, the results of this study suggest that the cellular behavior toward NR-AL is mediated by not only the type of AL and the protein corona it forms but also its resulting colloidal stability and interaction with cell culture supplements.
C1 [Kah, James Chen Yong; Chen, John; Hamad-Schifferli, Kimberly] MIT, Dept Biol Engn, Cambridge, MA 02139 USA.
[Zhu, David; Hamad-Schifferli, Kimberly] MIT, Dept Mech Engn, Cambridge, MA 02139 USA.
[Grabinski, Christin; Untener, Emily; Garrett, Carol; Hussain, Saber M.] Air Force Res Lab, Mol Bioeffects Branch, Human Effectiveness Directorate, Wright Patterson AFB, OH 45433 USA.
RP Hamad-Schifferli, K (reprint author), MIT, Lincoln Lab, 244 Wood St, Lexington, MA 02420 USA.
EM saber.hussain@us.af.mil; schiffer@mit.edu
RI Geracitano, Laura/E-6926-2013
FU NSF (DMR) [0906838]; NUS OPF; ORISE fellowship
FX Funding was from the NSF (DMR No. 0906838). J.C.Y.K was supported by the
NUS OPF. We thank Z. Xu for TEM imaging and the MIT Center for Materials
Science and Engineering for use of the TEM. We thank the Bawendi group
for use of their zetasizer. C.G. was supported by an ORISE fellowship.
NR 51
TC 15
Z9 16
U1 4
U2 67
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD MAY
PY 2014
VL 8
IS 5
BP 4608
EP 4620
DI 10.1021/nn5002886
PG 13
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA AI1UM
UT WOS:000336640600050
PM 24758495
ER
PT J
AU Grabowski, C
Degnan, JH
Amdahl, DJ
Domonkos, M
Ruden, EL
White, W
Wurden, GA
Frese, MH
Frese, SD
Camacho, F
Coffey, SK
Kiuttu, GF
Kostora, M
McCullough, J
Sommars, W
Lynn, AG
Yates, K
Bauer, BS
Fuelling, S
Siemon, RE
AF Grabowski, Chris
Degnan, James H.
Amdahl, David J.
Domonkos, Matthew
Ruden, Edward L.
White, William
Wurden, Glen A.
Frese, Michael H.
Frese, Sherry D.
Camacho, Frank
Coffey, Sean K.
Kiuttu, Gerald F.
Kostora, Mark
McCullough, John
Sommars, Wayne
Lynn, Alan G.
Yates, Kevin
Bauer, Bruno S.
Fuelling, Stephan
Siemon, Richard E.
TI Addressing Short Trapped-Flux Lifetime in High-Density Field-Reversed
Configuration Plasmas in FRCHX
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Inertial confinement; magnetic confinement; plasma generation; plasma
properties; plasmas
ID TOROIDAL MAGNETIC-FIELD; SOLID-STATE PHYSICS; LINER IMPLOSIONS; CURRENT
DRIVE; THETA-PINCH; COMPRESSION
AB The objective of the field-reversed configuration heating experiment (FRCHX) is to obtain a better understanding of the fundamental scientific issues associated with high-energy density laboratory plasmas (HEDLPs) in strong, closed-field-line magnetic fields. These issues have relevance to such topics as magneto-inertial fusion, laboratory astrophysical research, and intense radiation sources, among others. To create HEDLP conditions, a field-reversed configuration (FRC) plasma of moderate density is first formed via reversed-field theta pinch. It is then translated into a cylindrical aluminum flux conserver (solid liner), where it is trapped between two magnetic mirrors and then compressed by the magnetically driven implosion of the solid liner. A requirement is that, once the FRC is stopped within the solid liner, the trapped flux inside the FRC must persist while the compression process is completed. With the present liner dimensions and implosion drive bank parameters, the total time required for implosion is similar to 25 mu s. Lifetime measurements of recent FRCHX FRCs indicate that trapped lifetimes following capture are now approaching similar to 14 mu s (and therefore, total lifetimes after formation are now approaching similar to 19 mu s). By separating the mirror and translation coil banks into two so that the mirror fields can be set lower initially, the liner compression can now be initiated 7-9 mu s before the FRC is formed. A discussion of FRC lifetime-limiting mechanisms and various experimental approaches to extending the FRC lifetime will be presented.
C1 [Grabowski, Chris; Degnan, James H.; Amdahl, David J.; Domonkos, Matthew; Ruden, Edward L.; White, William] Air Force Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
[Wurden, Glen A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Frese, Michael H.; Frese, Sherry D.; Camacho, Frank; Coffey, Sean K.] NumerEx LLC, Albuquerque, NM 87106 USA.
[Kiuttu, Gerald F.] VariTech Serv, Albuquerque, NM 87112 USA.
[Kostora, Mark; McCullough, John; Sommars, Wayne] Sci Applicat Int Corp, Albuquerque, NM 87106 USA.
[Lynn, Alan G.] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA.
[Yates, Kevin; Bauer, Bruno S.; Fuelling, Stephan; Siemon, Richard E.] Univ Nevada, Dept Phys, Reno, NV 89557 USA.
RP Grabowski, C (reprint author), Air Force Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
EM theodore.grabowski@kirtland.af.mil; james.degnan@kirtland.af.mil;
david.amdahl@kirtland.af.mil; matthew.domonkos@kirtland.af.mil;
edward.ruden@kirtland.af.mil; wmwhite@ieee.org; wurden@lanl.gov;
michael.frese@numerex-llc.com; sherry.frese@numerex-llc.com;
frank.camacho.ctr@kirtland.af.mil; sean.coffey.ctr@kirtland.af.mil;
gerald.kiuttu@varitech-services.com; mark.kostora.ctr@kirtland.af.mil;
john.mccullough.ctr@kirtland.af.mil; wayne.sommars.ctr@kirtland.af.mil;
lynn@ece.unm.edu; kevyates@gmail.com; bruno.s.bauer@gmail.com;
fuelling@unr.edu; dick@luckymr.net
RI Wurden, Glen/A-1921-2017
OI Wurden, Glen/0000-0003-2991-1484
FU U.S. Department of Energy's Office of Fusion Energy Science
FX Manuscript received September 5, 2013; revised January 14, 2014;
accepted January 25, 2014. Date of publication February 25, 2014; date
of current version May 6, 2014. This work was supported by the U.S.
Department of Energy's Office of Fusion Energy Science
NR 44
TC 8
Z9 9
U1 2
U2 11
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD MAY
PY 2014
VL 42
IS 5
BP 1179
EP 1188
DI 10.1109/TPS.2014.2305402
PN 1
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA AI1DT
UT WOS:000336591000010
ER
PT J
AU Tuttle, SG
Carter, CD
Hsu, KY
AF Tuttle, Steven G.
Carter, Campbell D.
Hsu, Kuang-Yu
TI Particle Image Velocimetry in a Nonreacting and Reacting High-Speed
Cavity
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article
ID SUPERSONIC-FLOW; SHEAR-LAYER; COMBUSTION; FLAMEHOLDER; JET; TURBULENCE;
SPECTRA; FIELDS; FLAMES; PIV
AB Particle image velocimetry measurements were taken at the center plane of a high-speed cavity combustor in nonreacting and reacting conditions at fuel flows corresponding to medium, medium-high, and high fuel-loading conditions with supersonic core flow velocities. Calculation of the instantaneous and averaged pathlines, vorticity, swirling strength, and divergence of the velocity field revealed a highly unsteady three-dimensional flow with coherent eddy structures formed at the stagnation zone Of the shear layer against the downstream ramp of the cavity, which appear to be convected upstream in the cavity. Comparison of the shear layer location, thickness, and impingement stagnation zone revealed a number of changes in the mean and unsteady velocity behavior that were dependent on the heat release in the cavity and shear layer. As combustion shifted from the cavity at medium fuel loading into the shear layer at high fuel loading, the volumetric expansion compressed the primary recirculation zone and thickened the downstream boundary layer at the cavity exit. Combustion in the cavity tended to attenuate cavity and shear layer unsteadiness. When the combustion shifted to the shear layer, velocity unsteadiness increased, though not to the amplitudes measured without combustion.
C1 [Tuttle, Steven G.] US Navy, Res Lab, Washington, DC 20375 USA.
[Carter, Campbell D.] US Air Force, Res Lab, AFRL RQHF, Wright Patterson AFB, OH 45433 USA.
[Hsu, Kuang-Yu] Innovative Sci Solut Inc, AFRL RQHF, Dayton, OH 45459 USA.
RP Tuttle, SG (reprint author), US Navy, Res Lab, NRL 6185,4555 Overlook Ave SW, Washington, DC 20375 USA.
FU U.S. Air Force Office of Scientific Research; Office of Naval Research
FX This work was supported by the U.S. Air Force Office of Scientific
Research and was performed while the Corresponding Author was a National
Research Council Research Associate at the U.S. Air Force Research
Laboratory. Further preparation of this work for publication was
performed while the Corresponding Author was employed at the U.S. Naval
Research Laboratory and funded by the Office of Naval Research. The
authors would like to acknowledge the essential contributions of Gary
Streby, Dave Schommer, and Bill Terry (Innovative Scientific Solutions,
Inc.) for their work designing and preparing the tunnel hardware and
operating the tunnel during the experiment.
NR 47
TC 13
Z9 13
U1 0
U2 11
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
EI 1533-3876
J9 J PROPUL POWER
JI J. Propul. Power
PD MAY-JUN
PY 2014
VL 30
IS 3
BP 576
EP 591
DI 10.2514/1.B34974
PG 16
WC Engineering, Aerospace
SC Engineering
GA AH7ZI
UT WOS:000336353500006
ER
PT J
AU Varney, SM
Buchanan, JA
Kokko, J
Heard, K
AF Varney, Shawn M.
Buchanan, Jennie A.
Kokko, Jamie
Heard, Kennon
TI Acetylcysteine for Acetaminophen Overdose in Patients Who Weigh.100
SO AMERICAN JOURNAL OF THERAPEUTICS
LA English
DT Article
DE weight-based dosing; adverse events; hepatotoxicity
ID N-ACETYLCYSTEINE; HEPATOTOXICITY; MULTICENTER; INDUCTION; LIVER; RAT
AB N-Acetylcysteine (NAC) dosing for acetaminophen (APAP) overdose is weight based (150 mg/kg intravenous or 140-mg/kg oral loading dose) and, in the United States, the dosing protocol recommends using a maximum patient weight of 100 and 110 kg, respectively. Little clinical data describe the use of NAC for APAP poisoning in patients weighing >100 kg. The aim of this study was to describe the demographics, outcomes, and adverse event (AE) rates of patients weighing >100 kg treated with oral or IV NAC for APAP poisoning. Patients were identified from a multicenter retrospective NAC safety study for APAP overdose. We included patients with a recorded weight. Trained chart abstractors used a standardized form. Selected data included age, gender, weight, serum alanine transaminase, and aspartate transaminases, coingestants, NAC administration route, ingestion type, AEs, and outcome [hepatotoxicity (alanine transaminase > 1000 U/L), liver transplant, or death]. Descriptive statistics were used. Of 503 study patients, 37 (7.4%) had recorded weights >100 kg. The median (range) weight was 110 kg (101-160). The median (range) dosing for patients treated with oral NAC was 140 mg/kg (127-143 mg/kg) and 150 (108-168) mg/kg for IV NAC. Hepatotoxicity occurred in 12/36 (33.3%) patients. Death occurred in 4/36 (11.1%) patients. Thirteen NAC-related AEs occurred in 8 patients (1.6 per person). All AEs were related to NAC and were rated nonserious by the reviewer. Clinicians use an actual weight-based NAC dose rather than a maximum weight cutoff dose. Hepatotoxicity was common in our cohort. AEs were relatively common but not serious.
C1 [Varney, Shawn M.] Wilford Hall USAF Med Ctr, Dept Emergency Med, Lackland AFB, TX USA.
[Buchanan, Jennie A.; Kokko, Jamie; Heard, Kennon] Denver Hlth & Hosp Author, Rocky Mt Poison & Drug Ctr, Denver, CO USA.
[Buchanan, Jennie A.; Heard, Kennon] Univ Colorado, Denver Sch Med, Dept Emergency Med, Aurora, CO USA.
RP Buchanan, JA (reprint author), 777 Bannock St,MC 0108, Denver, CO 80204 USA.
EM jennie.buchanan3@dhha.org
FU American Academy of Clinical Toxicology Multicenter Research Grant;
Cumberland Pharmaceuticals; National Institute On Drug Abuse
FX At the time of the study, Dr. Varney was a medical toxicology fellow at
the Rocky Mountain Poison and Drug Center and was affiliated with Denver
Health and Hospital Authority, Denver, CO, and the University of
Colorado Denver School of Medicine, Aurora, CO. This project was
supported by the 2004 American Academy of Clinical Toxicology
Multicenter Research Grant and an unrestricted research grant from
Cumberland Pharmaceuticals. At the time of the study, Drs. K. Heard, S.
M. Varney, J. A. Buchanan, and Ms J. Kokko were employees of Denver
Health and the Rocky Mountain Poison and Drug Center (RMPDC). RMPDC was
the coordinating center for this multicenter study. All funds were paid
out to participating centers, and RMPDC received no support for this
project. RMPDC has clinical, consulting, and research contracts with
Cumberland Pharmaceuticals (a manufacturer of IV acetylcysteine) and
McNeil Consumer Healthcare (a manufacturer of acetaminophen products).
The investigators were responsible for the design, performance, and
analysis of the study and for the drafting and revisions of the
manuscript. The sponsors had no role in the study design, performance
and did not review the manuscript before acceptance. Dr. Heard was
supported by Award Number DA020573 from the National Institute On Drug
Abuse. The content is solely the responsibility of the authors and does
not necessarily represent the official views of the National Institute
on Drug Abuse or the National Institutes of Health.
NR 17
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U1 1
U2 3
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1075-2765
EI 1536-3686
J9 AM J THER
JI Am. J. Ther.
PD MAY-JUN
PY 2014
VL 21
IS 3
BP 159
EP 163
DI 10.1097/MJT.0b013e3182459c40
PG 5
WC Pharmacology & Pharmacy
SC Pharmacology & Pharmacy
GA AH2UT
UT WOS:000335977800015
PM 23011167
ER
PT J
AU Kanaev, AV
Miller, CW
Seanor, CJ
Murray-Krezan, J
AF Kanaev, Andrey V.
Miller, Christopher W.
Seanor, Collin J.
Murray-Krezan, Jeremy
TI Enhancement of imagery of objects with highly dynamic brightness and
large rotational motion
SO APPLIED OPTICS
LA English
DT Article
ID OPTICAL-FLOW; CONFIDENCE MEASURE; SUPERRESOLUTION
AB We report on application of multi-frame super-resolution (SR) to sampling limited imagery that models space objects (SOs). The difficulties of multi-frame image processing of SOs include abrupt illumination changes and complex in scene SO motion. These conditions adversely affect the accuracy of motion estimation necessary for resolution enhancement. We analyze the motion estimation errors from the standpoint of an optical flow (OF) interpolation error metric and show dependence of the object tracking accuracy on brightness changes and on the pixel displacement values between subsequent images. Despite inaccuracies of motion estimation, we demonstrate spatial acuity enhancement of the pixel limited resolution of model SO motion imagery by applying a SR algorithm that accounts for OF errors. In addition to visual inspection, image resolution improvement attained in the experiments is assessed quantitatively; a 1.8x resolution enhancement is demonstrated. (C) 2014 Optical Society of America
C1 [Kanaev, Andrey V.; Miller, Christopher W.] US Naval Res Lab, Washington, DC 20832 USA.
[Seanor, Collin J.; Murray-Krezan, Jeremy] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
RP Kanaev, AV (reprint author), US Naval Res Lab, 4550 Overlook Ave, Washington, DC 20832 USA.
EM andrey.kanaev@nrl.navy.mil
NR 27
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U1 2
U2 6
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1559-128X
EI 2155-3165
J9 APPL OPTICS
JI Appl. Optics
PD MAY 1
PY 2014
VL 53
IS 13
BP C32
EP C44
DI 10.1364/AO.53.000C32
PG 13
WC Optics
SC Optics
GA AG5XU
UT WOS:000335493000005
PM 24921888
ER
PT J
AU Rucci, M
Hardie, RC
Barnard, KJ
AF Rucci, Michael
Hardie, Russell C.
Barnard, Kenneth J.
TI Computationally efficient video restoration for Nyquist sampled imaging
sensors combining an affine-motion-based temporal Kalman filter and
adaptive Wiener filter
SO APPLIED OPTICS
LA English
DT Article
ID FAST SUPERRESOLUTION; NOISE; RECONSTRUCTION; DOMAIN
AB In this paper, we present a computationally efficient video restoration algorithm to address both blur and noise for a Nyquist sampled imaging system. The proposed method utilizes a temporal Kalman filter followed by a correlation-model based spatial adaptive Wiener filter (AWF). The Kalman filter employs an affine background motion model and novel process-noise variance estimate. We also propose and demonstrate a new multidelay temporal Kalman filter designed to more robustly treat local motion. The AWF is a spatial operation that performs deconvolution and adapts to the spatially varying residual noise left in the Kalman filter stage. In image areas where the temporal Kalman filter is able to provide significant noise reduction, the AWF can be aggressive in its deconvolution. In other areas, where less noise reduction is achieved with the Kalman filter, the AWF balances the deconvolution with spatial noise reduction. In this way, the Kalman filter and AWF work together effectively, but without the computational burden of full joint spatiotemporal processing. We also propose a novel hybrid system that combines a temporal Kalman filter and BM3D processing. To illustrate the efficacy of the proposed methods, we test the algorithms on both simulated imagery and video collected with a visible camera. (C) 2014 Optical Society of America
C1 [Rucci, Michael; Hardie, Russell C.] Univ Dayton, Dept Elect & Comp Engn, Dayton, OH 45469 USA.
[Barnard, Kenneth J.] Air Force Res Lab, AFRL RYMT, Wright Patterson AFB, OH 45433 USA.
RP Rucci, M (reprint author), Univ Dayton, Dept Elect & Comp Engn, 300 Coll Pk, Dayton, OH 45469 USA.
EM ruccim1@udayton.edu
FU AFLR [FA850-06-2-1081]
FX The algorithm development was sponsored by AFLR contract
FA850-06-2-1081. The authors are greatly appreciative for the help
provided by Barry K. Karch during the outdoor data collection.
NR 27
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U1 3
U2 10
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1559-128X
EI 2155-3165
J9 APPL OPTICS
JI Appl. Optics
PD MAY 1
PY 2014
VL 53
IS 13
BP C1
EP C13
DI 10.1364/AO.53.0000C1
PG 13
WC Optics
SC Optics
GA AG5XU
UT WOS:000335493000002
PM 24921885
ER
PT J
AU Sherrill, RE
Sinclair, AJ
Sinha, SC
Lovell, TA
AF Sherrill, Ryan E.
Sinclair, Andrew J.
Sinha, S. C.
Lovell, T. Alan
TI Time-varying transformations for Hill-Clohessy-Wiltshire solutions in
elliptic orbits
SO CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY
LA English
DT Article
DE Relative motion equations; Lyapunov-Floquet transformation;
Tschauner-Hempel equations
ID PROXIMITY OPERATIONS; PRISMA MISSION; SPACE-STATION; NAVIGATION
AB The relative motion of chief and deputy satellites in close proximity with orbits of arbitrary eccentricity can be approximated by linearized time-periodic equations of motion. The linear time-invariant Hill-Clohessy-Wiltshire equations are typically derived from these equations by assuming the chief satellite is in a circular orbit. Two Lyapunov-Floquet transformations and an integral-preserving transformation are here presented which relate the linearized time-varying equations of relative motion to the Hill-Clohessy-Wiltshire equations in a one-to-one manner through time-varying coordinate transformations. These transformations allow the Hill-Clohessy-Wiltshire equations to describe the linearized relative motion for elliptic chief satellites.
C1 [Sherrill, Ryan E.; Sinclair, Andrew J.] Auburn Univ, Dept Aerosp Engn, Auburn, AL 36849 USA.
[Sinha, S. C.] Auburn Univ, Dept Mech Engn, Auburn, AL 36849 USA.
[Lovell, T. Alan] Air Force Res Lab, Space Vehicles Directorate, Albuquerque, NM 87117 USA.
RP Sherrill, RE (reprint author), Auburn Univ, Dept Aerosp Engn, 211 Davis Hall, Auburn, AL 36849 USA.
EM ryanesherrill@gmail.com
RI Sinclair, Andrew/H-2156-2013
NR 34
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U1 0
U2 7
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0923-2958
EI 1572-9478
J9 CELEST MECH DYN ASTR
JI Celest. Mech. Dyn. Astron.
PD MAY
PY 2014
VL 119
IS 1
BP 55
EP 73
DI 10.1007/s10569-014-9543-x
PG 19
WC Astronomy & Astrophysics; Mathematics, Interdisciplinary Applications
SC Astronomy & Astrophysics; Mathematics
GA AG8IO
UT WOS:000335662200004
ER
PT J
AU Elabd, S
Balasubramanian, S
Wu, Q
Quach, T
Mattamana, A
Khalil, W
AF Elabd, S.
Balasubramanian, S.
Wu, Q.
Quach, T.
Mattamana, A.
Khalil, W.
TI Analytical and Experimental Study of Wide Tuning Range mm-Wave CMOS
LC-VCOs
SO IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
LA English
DT Article
DE CMOS; LC-VCOs; mm-Wave VCOs; technology scaling; tuning range analysis;
varactors; wide tuning range
ID PHASE-LOCKED LOOP; MOS VARACTORS; NOISE; DESIGN; OSCILLATORS; BAND;
MODEL; CONVERSION; INDUCTORS; REGIONS
AB The unprecedented interest in high bandwidth applications in the mm-wave range has set off a wave of research exploring techniques that enable wide tuning range voltage-controlled oscillators (VCOs). Low frequency CMOS LC-VCOs (< 10 GHz) have been well studied in the literature and several approaches have been developed to optimize their performance. However, there lie several interesting challenges in the mm-wave space, specifically close to the, that motivate the need for analyzing the tuning range and phase noise in mm-wave VCOs. This paper presents a detailed analysis of the ultimate performance bound in simultaneously achieving low phase noise and wide tuning range in CMOS VCOs. The analysis is conducted on a 130 nm CMOS process, and confirmed by measurement results on three VCOs at 26 GHz, 34 GHz and 40 GHz. Finally, the impact of CMOS technology scaling (from 130 nm down to 45 nm), on the achievable performance bounds is analyzed and presented.
C1 [Elabd, S.; Khalil, W.] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA.
[Balasubramanian, S.; Wu, Q.] Dept Elect & Computat Engn, Columbus, OH 43210 USA.
[Quach, T.; Mattamana, A.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Elabd, S (reprint author), Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA.
EM elabd.1@buckeyemail.osu.edu
FU Air Force Research Laboratory, Wright-Patterson AFB, OH, USA
FX This work was supported in part by Air Force Research Laboratory,
Wright-Patterson AFB, OH, USA.
NR 54
TC 2
Z9 2
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1549-8328
EI 1558-0806
J9 IEEE T CIRCUITS-I
JI IEEE Trans. Circuits Syst. I-Regul. Pap.
PD MAY
PY 2014
VL 61
IS 5
BP 1343
EP 1354
DI 10.1109/TCSI.2014.2309862
PG 12
WC Engineering, Electrical & Electronic
SC Engineering
GA AG6ZB
UT WOS:000335566500006
ER
PT J
AU McCall, PD
Naudeau, ML
Adjouadi, M
AF McCall, Paul D.
Naudeau, Madeleine L.
Adjouadi, Malek
TI Debris characterization techniques via unresolved long-wave infrared
imaging from a space-based platform
SO JOURNAL OF APPLIED REMOTE SENSING
LA English
DT Article
DE space debris; space situational awareness; long-wave infrared imaging;
wavelet decomposition; local area awareness; debris characterization
ID RATIO HAMR OBJECTS; SPECTROPHOTOMETRIC OBSERVATIONS; HIGH AREA; GEO
AB Every space launch increases the overall amount of space debris, especially when circumstances result in the orbital objects being stranded in orbit with no deorbiting capabilities. Studies contributing to the understanding of space debris aid spacecraft operators in mitigating risk associated with Earth-orbiting debris objects. Accurately characterizing the debris threat to a spacecraft is of vital importance in maximizing the lifespan and mission capabilities of the spacecraft. This investigation aims to develop long-wave infrared radiometric-based techniques for detection and characterization of typical debris objects via signal analysis of unresolved imagery. Tumble rate, absorptivity-to-emissivity ratio, and cross-sectional area are analyzed and estimates made regarding their values. Fusion of astrometric and radiometric data allows for a more accurate, and less ambiguous, hypothesis to be reached concerning the cross-sectional area of debris objects. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
C1 [McCall, Paul D.; Adjouadi, Malek] Florida Int Univ, Miami, FL 33174 USA.
[Naudeau, Madeleine L.] Kirtland Air Force Base, Air Force Res Lab, Space Vehicles Directorate, Albuquerque, NM 87116 USA.
RP McCall, PD (reprint author), Florida Int Univ, 10555 West Flagler St,EC 2220, Miami, FL 33174 USA.
EM pmcca001@fiu.edu
FU National Science Foundation [CNS-0959985, CNS-1042341, HRD-0833093,
IIP-1338922, IIP-1230661]; Department of Defense (DoD) through the
National Defense Science & Engineering Graduate Fellowship (NDSEG)
Program; Department of Defense (DoD) through the Air Force Research
Laboratory Summer Scholars Program; Florida International University
FX This work was supported by the National Science Foundation under grants
CNS-0959985, CNS-1042341, HRD-0833093 and IIP-1338922 and IIP-1230661.
The author of this dissertation was partially supported by the
Department of Defense (DoD) through the National Defense Science &
Engineering Graduate Fellowship (NDSEG) Program, and through
participation in the Air Force Research Laboratory Summer Scholars
Program. The author is supported through the Betty G. Reader Graduate
Scholarship from Florida International University.
NR 22
TC 0
Z9 0
U1 1
U2 9
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 1931-3195
J9 J APPL REMOTE SENS
JI J. Appl. Remote Sens.
PD MAY 1
PY 2014
VL 8
AR 084989
DI 10.1117/1.JRS.8.084989
PG 13
WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic
Technology
SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science &
Photographic Technology
GA AG8CP
UT WOS:000335646700001
ER
PT J
AU Huang, HS
Ganguli, S
Roy, AK
AF Huang, H. Sam
Ganguli, Sabyasachi
Roy, Ajit K.
TI Prediction of the transverse thermal conductivity of pitch-based carbon
fibers
SO JOURNAL OF COMPOSITE MATERIALS
LA English
DT Article
DE molecular dynamics simulations; thermal conductivity; finite element;
Pitch fiber
ID COMPOSITE-MATERIALS
AB In this paper, we utilized a bottom-up method to predict the transverse thermal conductivity of pitched-based carbon fibers. We used molecular dynamics simulations with Green-Kubo formalism to calculate the in-plane thermal conductivity and out-of-plane thermal conductivity of the graphite sheets. The effects of waviness on the thermal conductivity of the graphite sheets were studied by MD simulations. The calculated in-plane thermal conductivity and out-of-plane thermal conductivity of graphite sheets from MD simulations were then used for the prediction of transverse thermal conductivity of the pitch fibers by finite element method. In the finite element simulations, the waviness in the graphite sheets was found to decrease the transverse thermal conductivity of pitch fibers, though not significantly. The defects observed in the pitch fibers were simulated by the damage elements in the finite element analysis. The simulation results showed that the proposed model, in which 12.5% of damage was included, predicted the effective transverse thermal conductivity well compared to the value measured from experiments.
C1 [Huang, H. Sam; Ganguli, Sabyasachi; Roy, Ajit K.] Air Force Res Lab, Nanoelect Mat Branch, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Huang, H. Sam] Universal Technol Corp, Dayton, OH USA.
[Ganguli, Sabyasachi] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Huang, HS (reprint author), Air Force Res Lab, Nanoelect Mat Branch, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM hsengji.huang.ctr@wpafb.af.mil
FU Air Force Research Lab (AFRL) [FA8650-07-D-5800]; AFRL thermal STT; Air
Force Research Laboratory High Performance Supercomputing Resource
Center (AFRL-DSRC)
FX Financial support from Air Force Research Lab (AFRL) under contract
number FA8650-07-D-5800 and the AFRL thermal STT is gratefully
acknowledged. The authors are also grateful to computational efforts
supported by the Air Force Research Laboratory High Performance
Supercomputing Resource Center (AFRL-DSRC). Huang would like to
acknowledge the SEM images provided by Dave P Anderson and useful
discussion with Dr Sangwook Sihn and Dr Vikas Varshney.
NR 27
TC 0
Z9 0
U1 3
U2 23
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0021-9983
EI 1530-793X
J9 J COMPOS MATER
JI J. Compos Mater.
PD MAY
PY 2014
VL 48
IS 11
BP 1383
EP 1390
DI 10.1177/0021998313486501
PG 8
WC Materials Science, Composites
SC Materials Science
GA AG6SO
UT WOS:000335548900011
ER
PT J
AU Hall, RB
Rao, IJ
Qi, HJ
AF Hall, R. B.
Rao, I. J.
Qi, H. J.
TI Thermodynamics and thermal decomposition for shape memory effects with
crystallization based on dissipation and logarithmic strain
SO MECHANICS OF TIME-DEPENDENT MATERIALS
LA English
DT Article
DE Shape memory; Crystallization; Dissipation; Logarithmic strain;
Logarithmic rate
ID POLYMERS
AB The present effort provides a 3-D thermodynamic framework generalizing the 1-D modeling of 2-way shape memory materials described by Westbrook et al. (J. Eng. Mater. Technol. 312:041010, 2010) and Chung et al. (Macromolecules 41:184-192, 2008), while extending the strain-induced crystallization and shape memory approaches of Rao and Rajagopal (Interfaces Free Bound. 2:73-94, 2000; Int. J. Solids Struct. 38:1149-1167, 2001), Barot and Rao (Z. Angew. Math. Phys. 57:652-681, 2006), and Barot et al. (Int. J. Eng. Sci. 46:325-351, 2008) to include finite thermal expansion within a logarithmic strain basis. The free energy of newly-formed orthotropic crystallites is assumed additive, with no strains in their respective configurations of formation. A multiplicative decomposition is assumed for the assumed thermoelastic orthotropic expansional strains of the respective crystallites. The properties of the crystallites are allowed to depend both on current temperature and their respective temperatures of formation. The entropy production rate relation is written in the frame rotating with the logarithmic spin and produces stress and entropy relations incorporating the integrated configurational free energies, and a driving term for the crystallization analogous to that obtained by the previous studies of Rao et al. The salient attributes of the 1-D modeling of Westbrook et al. are recovered, and applications are discussed.
C1 [Hall, R. B.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH USA.
[Rao, I. J.] New Jersey Inst Technol, Dept Mech & Ind Engn, Newark, NJ 07102 USA.
[Qi, H. J.] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
RP Hall, RB (reprint author), Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH USA.
EM richard.hall.16@us.af.mil
RI Qi, H. Jerry/C-1588-2009
NR 13
TC 2
Z9 2
U1 4
U2 11
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1385-2000
EI 1573-2738
J9 MECH TIME-DEPEND MAT
JI Mech. Time-Depend. Mater.
PD MAY
PY 2014
VL 18
IS 2
BP 437
EP 452
DI 10.1007/s11043-014-9236-6
PG 16
WC Mechanics; Materials Science, Characterization & Testing
SC Mechanics; Materials Science
GA AG6VP
UT WOS:000335556900007
ER
PT J
AU Yu, K
McClung, AJW
Tandon, GP
Baur, JW
Qi, HJ
AF Yu, Kai
McClung, Amber J. W.
Tandon, Gyaneshwar P.
Baur, Jeffrey W.
Qi, H. Jerry
TI A thermomechanical constitutive model for an epoxy based shape memory
polymer and its parameter identifications
SO MECHANICS OF TIME-DEPENDENT MATERIALS
LA English
DT Article
DE Shape memory effect; Shape memory polymer; Constitutive model
ID CROSS-LINKED POLYMERS; MAGNETIC NANOPARTICLES; RELAXATION MECHANISMS;
POLYURETHANE SERIES; STRESS-RELAXATION; VERIFLEX-E; PART I; RECOVERY;
DEFORMATION; BEHAVIOR
AB This paper presents a three-dimensional (3D) finite deformation thermomechanical model to study the glass transition and shape memory behaviors of an epoxy based shape memory polymer (SMP) (Veriflex E) and a systematic material parameter identification scheme from a set of experiments. The model was described by viscoelastic elements placed in parallel to represent different active relaxation mechanisms around glass transition temperature in the polymer. A set of standard material tests was proposed and conducted to identify the model parameter values, which consequently enable the model to reproduce the experimentally observed shape memory (SM) behaviors. The parameter identification procedure proposed in this paper can be used as an effective tool to assist the construction and application of such 3D multi-branch model for general SMP materials.
C1 [Yu, Kai; Qi, H. Jerry] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA.
[McClung, Amber J. W.; Tandon, Gyaneshwar P.; Baur, Jeffrey W.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[McClung, Amber J. W.] AFRL, Natl Res Council Res Associate, Wright Patterson AFB, OH 45433 USA.
[Tandon, Gyaneshwar P.] Univ Dayton Res Ins, Dayton, OH USA.
RP Qi, HJ (reprint author), Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA.
EM Jeffery.Baur@wpafb.af.mil; qih@colorado.edu
RI Yu, Kai/A-1540-2015; Qi, H. Jerry/C-1588-2009
FU AFRL summer faculty fellowship program [FA8650-07-D-5800]
FX H.J.Q. acknowledges the support through AFRL summer faculty fellowship
program (contract FA8650-07-D-5800).
NR 75
TC 14
Z9 14
U1 4
U2 50
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1385-2000
EI 1573-2738
J9 MECH TIME-DEPEND MAT
JI Mech. Time-Depend. Mater.
PD MAY
PY 2014
VL 18
IS 2
BP 453
EP 474
DI 10.1007/s11043-014-9237-5
PG 22
WC Mechanics; Materials Science, Characterization & Testing
SC Mechanics; Materials Science
GA AG6VP
UT WOS:000335556900008
ER
PT J
AU Crawford, P
Crop, JA
AF Crawford, Paul
Crop, Justin A.
TI Evaluation of Scrotal Masses
SO AMERICAN FAMILY PHYSICIAN
LA English
DT Article
ID TESTICULAR TORSION; MANAGEMENT; DIAGNOSIS; CHILDREN
AB Scrotal masses are caused by a variety of disorders, ranging from benign conditions to those requiring emergent surgical intervention. Painful scrotal masses require urgent evaluation. Characteristics that suggest testicular torsion include rapid symptom onset, nausea and vomiting, high position of the testicle, and abnormal cremasteric reflex. Doppler ultrasonography or surgical exploration is required to confirm the diagnosis. Surgical repair must occur within six hours of symptom onset to reliably salvage the testicle. Epididymitis/orchitis have a slower onset and are associated with a C-reactive protein level greater than 24 mg per L (228.6 nmol per L) and increased blood flow on ultrasonography. Acute onset of pain with near normal physical examination and ultrasound findings is consistent with torsion of the testicular appendage. Testicular malignancies cause pain in 15% of cases. If ultrasonography shows an intratesticular mass, timely urology referral is indicated. Inguinal hernias are palpated separate to the testicle and can cause pain. Emergent surgery is indicated for a strangulated hernia. Hydrocele, varicocele, and scrotal skin lesions may be managed in nonurgent settings. A biopsy should be performed to rule out cancer in patients with scrotal skin lesions that are erosive, vascular, hyperkeratotic, or nonhealing, or that change color or have irregular borders. (Am Fam Physician. 2014;89(9):723-727. Copyright (C) 2014 American Academy of Family Physicians.)
C1 [Crawford, Paul; Crop, Justin A.] Nellis Family Med Residency, Las Vegas, NV USA.
RP Crawford, P (reprint author), Nellis Family Med Residency, 4700 Las Vegas Blvd N, Nellis AFB, NV 89191 USA.
EM paul.crawford@us.af.mil
NR 25
TC 5
Z9 6
U1 0
U2 3
PU AMER ACAD FAMILY PHYSICIANS
PI KANSAS CITY
PA 8880 WARD PARKWAY, KANSAS CITY, MO 64114-2797 USA
SN 0002-838X
EI 1532-0650
J9 AM FAM PHYSICIAN
JI Am. Fam. Physician
PD MAY 1
PY 2014
VL 89
IS 9
BP 723
EP 727
PG 5
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA AG3DH
UT WOS:000335295500008
PM 24784335
ER
PT J
AU Zhang, XR
Knize, RJ
Lu, YL
AF Zhang, Xuanru
Knize, Randy J.
Lu, Yalin
TI Enhanced light absorption in thin-film tandem solar cells using a bottom
metallic nanograting
SO APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
LA English
DT Article
ID SILICON; DESIGN
AB We introduced a metallic nanograting at the bottom of thin-film tandem solar cells, and carried out an investigation into the light absorption in the top and bottom cells via the electromagnetic simulation. It indicates that broadband and polarization-insensitive light absorption enhancement can be obtained in the bottom cell, while the light absorption in the top cell remains unchanged by the influence of the added metallic nanograting. An overall carrier generation enhancement reaches as much as 60 % for both incident polarizations. This absorption enhancement can survive in a wide range of the cell thickness and the nanograting geometries, which enables us to reduce the thickness of the bottom cell with minimal impact on the light absorption. Thereby, this design could reduce the solar cell production cost, and meanwhile could enhance the solar cell efficiency by decreasing the light-generated carrier recombination rate.
C1 [Zhang, Xuanru; Lu, Yalin] Univ Sci & Technol China, Adv Appl Res Ctr, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China.
[Knize, Randy J.; Lu, Yalin] US Air Force Acad, Dept Phys, Laser Opt Res Ctr, Colorado Springs, CO 80840 USA.
[Lu, Yalin] Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China.
RP Lu, YL (reprint author), Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China.
EM yllu@ustc.edu.cn
FU National Basic Research Program of China [2012CB922001]
FX This work was supported by the National Basic Research Program of China
(2012CB922001).
NR 18
TC 0
Z9 1
U1 0
U2 18
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0947-8396
EI 1432-0630
J9 APPL PHYS A-MATER
JI Appl. Phys. A-Mater. Sci. Process.
PD MAY
PY 2014
VL 115
IS 2
BP 509
EP 515
DI 10.1007/s00339-013-8075-7
PG 7
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA AG3NT
UT WOS:000335327100024
ER
PT J
AU Moore, C
Tovar, E
Christiansen, M
AF Moore, Christina
Tovar, Eric
Christiansen, Mollie
TI Our Own Worst Enemy: Examining Interruptions During Medication
Administration
SO CLINICAL NURSE SPECIALIST
LA English
DT Meeting Abstract
C1 [Moore, Christina; Christiansen, Mollie] US Army, San Antonio, TX USA.
[Tovar, Eric] US Air Force, San Antonio, TX USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0887-6274
EI 1538-9782
J9 CLIN NURSE SPEC
JI Clin. Nurse Spec.
PD MAY-JUN
PY 2014
VL 28
IS 3
BP 179
EP 179
PG 1
WC Nursing
SC Nursing
GA AF7XW
UT WOS:000334929800028
ER
PT J
AU Leve, FA
AF Leve, Frederick A.
TI Evaluation of Steering Algorithm Optimality for Single-Gimbal Control
Moment Gyroscopes
SO IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
LA English
DT Article
DE Attitude control; control moment gyro; optimality; pseudoinverse;
singularity
ID LAW
AB Analytic optimization methods typically used to derive optimal steering algorithms for single-gimbal control moment gyros do not consider the structure of the Jacobian matrix mapping the gimbal rates onto the desired torque within their cost function. Many of the steering algorithms resulting from these optimization methods systematically take first and second derivatives, forming the Jacobian and Hessian matrices to obtain a solution. However, the optimality is usually a local result and cannot be mapped back to its resulting performance. It is shown that the majority of steering algorithms are optimal with respect to one specific cost function previously published and that the design of the weighting matrices within the cost is what distinguishes steering algorithms. The author analytically shows how the blended inverse, Moore-Penrose pseudoinverse, generalized inverse steering law, singularity robust inverse, generalized singularity robust inverse, singular direction avoidance, local-gradient methods, and the hybrid steering logic are derived from the same optimizations but their sense of optimality is lost because the structure of singularities is not considered in the optimization process. In addition, the author also points out that the design of the quadratic costs weighting matrix used for optimization and desired gimbal rate is of the highest importance in differentiation between steering law performance.
C1 Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Leve, FA (reprint author), Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
EM afrl.rvsv@kirtland.af.mil
OI Leve, Frederick/0000-0001-7661-2191
NR 15
TC 8
Z9 8
U1 0
U2 9
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1063-6536
EI 1558-0865
J9 IEEE T CONTR SYST T
JI IEEE Trans. Control Syst. Technol.
PD MAY
PY 2014
VL 22
IS 3
BP 1130
EP 1134
DI 10.1109/TCST.2013.2259829
PG 5
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA AG2BP
UT WOS:000335220600029
ER
PT J
AU Holzinger, MJ
Alfriend, KT
Wetterer, CJ
Luu, KK
Sabol, C
Hamada, K
AF Holzinger, Marcus J.
Alfriend, Kyle T.
Wetterer, Charles J.
Luu, K. Kim
Sabol, Chris
Hamada, Kris
TI Photometric Attitude Estimation for Agile Space Objects with Shape
Uncertainty
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article
ID ASTEROID LIGHTCURVE INVERSION; ATMOSPHERELESS BODIES; OPTIMIZATION
METHODS; BRIGHTNESS FUNCTIONS; CONVEX-BODIES; RECONSTRUCTION; ROTATION;
MODELS
AB The problem of estimating attitude for actively maneuvering or passively rotating space objects with unknown mass properties/external torques and uncertain shape models is addressed. To account for agile space object maneuvers, angular rates are simply assumed to be random inputs (e. g., process noise), and model uncertainty is accounted for in a bias state with dynamics derived using first principles. Bayesian estimation approaches are used to estimate the resulting severely non-Gaussian and multimodal state distributions. Simulated results are given, conclusions regarding performance are made, and future work is outlined.
C1 [Holzinger, Marcus J.; Alfriend, Kyle T.] Texas A&M Univ, Dept Aerosp Engn, College Stn, TX 77843 USA.
[Wetterer, Charles J.; Hamada, Kris] Pacific Def Solut LLC, Integr Applicat Inc, Kihei, HI 96753 USA.
[Luu, K. Kim; Sabol, Chris] US Air Force, Res Lab, Directed Energy Directorate, Wright Patterson AFB, OH 45433 USA.
RP Holzinger, MJ (reprint author), Georgia Inst Technol, Sch Aerosp Engn, Atlanta, GA 30332 USA.
FU U.S. Air Force Research Laboratory at the U.S. Air Force Maui Optical
and Supercomputing site
FX This work is sponsored by the U.S. Air Force Research Laboratory at the
U.S. Air Force Maui Optical and Supercomputing site. The authors wish to
thank Andrew Harms for his contributions to this work.
NR 42
TC 2
Z9 2
U1 0
U2 2
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
EI 1533-3884
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD MAY-JUN
PY 2014
VL 37
IS 3
BP 921
EP 932
DI 10.2514/1.58002
PG 12
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA AG4NT
UT WOS:000335397700019
ER
PT J
AU DeMars, KJ
Cheng, Y
Jah, MK
AF DeMars, Kyle J.
Cheng, Yang
Jah, Moriba K.
TI Collision Probability with Gaussian Mixture Orbit Uncertainty
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article
ID ANALYTICAL EXPRESSIONS; TERM ENCOUNTERS; SPACE OBJECTS; SATELLITE;
PROPAGATION
C1 [DeMars, Kyle J.] Missouri Univ Sci & Technol, Dept Mech & Aerosp Engn, Rolla, MO 65409 USA.
[Cheng, Yang] Mississippi State Univ, Dept Aerosp Engn, Mississippi State, MS 39762 USA.
[Jah, Moriba K.] US Air Force, Res Lab, Kirtland AFB, NM 87117 USA.
RP DeMars, KJ (reprint author), Missouri Univ Sci & Technol, Dept Mech & Aerosp Engn, Rolla, MO 65409 USA.
EM demarsk@mst.edu; cheng@ae.msstate.edu
NR 48
TC 15
Z9 15
U1 3
U2 6
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
EI 1533-3884
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD MAY-JUN
PY 2014
VL 37
IS 3
BP 979
EP 984
DI 10.2514/1.62308
PG 6
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA AG4NT
UT WOS:000335397700027
ER
PT J
AU Miracle, DB
AF Miracle, Dan B.
TI METALLIC GLASSES Fast track to production
SO NATURE MATERIALS
LA English
DT News Item
C1 AF Res Lab, Mat & Mfg Directorate, Dayton, OH 45433 USA.
RP Miracle, DB (reprint author), AF Res Lab, Mat & Mfg Directorate, Dayton, OH 45433 USA.
EM daniel.miracle@us.af.mil
NR 8
TC 4
Z9 4
U1 7
U2 74
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
EI 1476-4660
J9 NAT MATER
JI Nat. Mater.
PD MAY
PY 2014
VL 13
IS 5
BP 432
EP 433
DI 10.1038/nmat3958
PG 2
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA AF6ST
UT WOS:000334845600010
PM 24751769
ER
PT J
AU Perez, D
Wohlberg, B
Lovell, TA
Shoemaker, M
Bevilacqua, R
AF Perez, David
Wohlberg, Brendt
Lovell, Thomas Alan
Shoemaker, Michael
Bevilacqua, Riccardo
TI Orbit-centered atmospheric density prediction using artificial neural
networks
SO ACTA ASTRONAUTICA
LA English
DT Article
DE Thermospheric density; Modeling; Neural networks
ID GENERAL-CIRCULATION MODEL; THERMOSPHERIC MODEL; DIFFERENTIAL DRAG;
SOLAR; ELECTRODYNAMICS; CONSTRAINTS; MESOSPHERE; INDEXES; MIDDLE
AB At low Earth orbits, drag force is a significant source of error for propagating the motion of a spacecraft. The main factor driving the changes on the drag force is neutral density. Global atmospheric models provide estimates for the density which are significantly affected by bias due to misrepresentations of the underlying physics and limitations on the statistical models. In this work a localized predictor based on artificial neural networks is presented. Localized refers to the focus being on a specific orbit, rather than a global prediction. The predictor uses density measurements or estimates on a given orbit and a set of proxies for solar and geomagnetic activities to predict the value of the density along the future orbit of the spacecraft. The performance of the localized predictor is studied for different neural network structures, testing periods of high and low solar and geomagnetic activities and different prediction windows. Comparison with previously developed methods show substantial benefits in using artificial neural networks, both in prediction accuracy and in the potential for spacecraft onboard implementation. In fact, the proposed neural networks are computationally efficient and would be straightforward to integrate into onboard software. (C) 2014 IAA. Published by Elsevier Ltd. All rights reserved.
C1 [Perez, David; Bevilacqua, Riccardo] Rensselaer Polytech Inst, Dept Mech Aerosp & Nucl Engn, Troy, NY 12180 USA.
[Wohlberg, Brendt; Shoemaker, Michael] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Lovell, Thomas Alan] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM USA.
RP Bevilacqua, R (reprint author), Rensselaer Polytech Inst, Dept Mech Aerosp & Nucl Engn, JEC 5048 110 8th St, Troy, NY 12180 USA.
EM perezd4@rpi.edu; brendt@lanl.gov; thomas.lovell@kirtland.af.mil;
shoemaker@lanl.gov; bevilr@rpi.edu
RI Wohlberg, Brendt/M-7764-2015
OI Wohlberg, Brendt/0000-0002-4767-1843
FU U.S. Office of Naval Research [N00014-13-1-0536]
FX The authors wish to acknowledge the Los Alamos National Laboratory for
hosting the Space Weather Summer School in 2013; the results presented
here were obtained under the Vela Fellowship associated with Mr. Perez's
participation to the summer school. This research was also supported by
the U.S. Office of Naval Research, under the Young Investigator Program
(Award no. N00014-13-1-0536).
NR 52
TC 7
Z9 7
U1 0
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0094-5765
EI 1879-2030
J9 ACTA ASTRONAUT
JI Acta Astronaut.
PD MAY-JUN
PY 2014
VL 98
BP 9
EP 23
DI 10.1016/j.actaastro.2014.01.007
PG 15
WC Engineering, Aerospace
SC Engineering
GA AE6EW
UT WOS:000334084400002
ER
PT J
AU Abdomerovic, I
Palmer, WD
Watson, PM
Worley, R
Raman, S
AF Abdomerovic, Iskren
Palmer, William D.
Watson, Paul M.
Worley, Rick
Raman, Sanjay
TI Leveraging Integration
SO IEEE MICROWAVE MAGAZINE
LA English
DT Article
ID POWER-AMPLIFIERS; EFFICIENCY; NETWORKS
C1 [Abdomerovic, Iskren] Booz Allen Hamilton, Arlington, VA USA.
[Palmer, William D.] Def Adv Res Projects Agcy, Arlington, VA USA.
[Watson, Paul M.; Worley, Rick] Sensors Directorate, Air Force Res Lab, Wright Patterson AFB, OH USA.
[Raman, Sanjay] Virginia Polytech Inst & State Univ, Arlington, VA USA.
RP Abdomerovic, I (reprint author), Booz Allen Hamilton, Arlington, VA USA.
EM iskren.abdomerovic.ctr@darpa.mil
RI Palmer, William/E-2296-2012
NR 36
TC 1
Z9 1
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1527-3342
EI 1557-9581
J9 IEEE MICROW MAG
JI IEEE Microw. Mag.
PD MAY
PY 2014
VL 15
IS 3
SI SI
BP 86
EP 96
DI 10.1109/MMM.2014.2302136
PG 11
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA AF2CN
UT WOS:000334520300018
ER
PT J
AU Mezulis, A
Salk, RH
Hyde, JS
Priess-Groben, HA
Simonson, JL
AF Mezulis, Amy
Salk, Rachel H.
Hyde, Janet Shibley
Priess-Groben, Heather A.
Simonson, Jordan L.
TI Affective, Biological, and Cognitive Predictors of Depressive Symptom
Trajectories in Adolescence
SO JOURNAL OF ABNORMAL CHILD PSYCHOLOGY
LA English
DT Article
DE Depression; Trajectories; Temperament; Puberty; Cognitive risk factors;
Adolescence
ID STRESSFUL LIFE EVENTS; CHILDRENS DEPRESSION; GENDER-DIFFERENCES;
PUBERTAL DEVELOPMENT; MIDDLE ADOLESCENCE; YOUNG ADULTHOOD;
MENTAL-HEALTH; TEMPERAMENT; VULNERABILITY; CHILDHOOD
AB Heterogeneity in the longitudinal course of depressive symptoms was examined using latent growth mixture modeling among a community sample of 382 U.S. youth from ages 11 to 18 (52.1 % female). Three latent trajectory classes were identified: Stable Low (51 %; displayed low depressive symptoms at all assessments), Increasing (37 %; reported low depressive symptoms at age 11, but then significantly higher depressive symptoms than the Stable Low class at ages 13, 15, and 18), and Early High (12 %; reported high early depressive symptoms at age 11, followed by symptoms that declined over time yet remained significantly higher than those of the Stable Low class at ages 13, 15, and 18). By age 15, rates of Major Depressive Disorder diagnoses among the Early High (25.0 %) and Increasing (20.4 %) classes were more than twice that observed among the Stable Low class (8.8 %). Affective (negative affectivity), biological (pubertal timing, sex) and cognitive (cognitive style, rumination) factors were examined as predictors of class membership. Results indicated general risk factors for both high-risk trajectories as well as specific risk factors unique to each trajectory. Being female and high infant negative affectivity predicted membership in the Increasing class. Early puberty, high infant negative affectivity for boys, and high rumination for girls predicted membership in the Early High class. Results highlight the importance of examining heterogeneity in depression trajectories in adolescence as well as simultaneously considering risk factors across multiple domains.
C1 [Mezulis, Amy] Seattle Pacific Univ, Dept Clin Psychol, Seattle, WA 98119 USA.
[Salk, Rachel H.; Hyde, Janet Shibley] Univ Wisconsin, Dept Psychol, Madison, WI 53706 USA.
[Priess-Groben, Heather A.] Simpson Coll, Indianola, IA USA.
[Simonson, Jordan L.] US Air Force, Shriever Air Force Base, Colorado Springs, CO USA.
RP Mezulis, A (reprint author), Seattle Pacific Univ, Dept Clin Psychol, Seattle, WA 98119 USA.
EM mezulis@spu.edu; rsalk@wisc.edu; jshyde@wisc.edu;
heather.groben@simpson.edu; jordan.simonson.1@us.af.mil
FU NIMH NIH HHS [R01 MH044340, F31 MH084476, R01MH44340, T32 MH018931,
F31MH084476]
NR 53
TC 10
Z9 10
U1 4
U2 19
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0091-0627
EI 1573-2835
J9 J ABNORM CHILD PSYCH
JI J. Abnorm. Child Psychol.
PD MAY
PY 2014
VL 42
IS 4
BP 539
EP 550
DI 10.1007/s10802-013-9812-2
PG 12
WC Psychology, Clinical; Psychology, Developmental
SC Psychology
GA AE8TI
UT WOS:000334274500003
PM 24158642
ER
PT J
AU Huang, JQ
Goltz, MN
AF Huang, Junqi
Goltz, Mark Neil
TI Spatial Moment Equations for a Groundwater Plume with Degradation and
Rate-Limited Sorption
SO JOURNAL OF HYDROLOGIC ENGINEERING
LA English
DT Article
DE Groundwater quality; Mathematical models; Degradation; Sorption;
Transport phenomena; Dispersion; Groundwater pollution; Advection
ID SOLUTE TRANSPORT; NONEQUILIBRIUM
AB In this paper, the authors analytically derive the solution for the spatial moments of groundwater solute concentration distributions simulated by a one-dimensional model that assumes advective-dispersive transport with first-order degradation and rate-limited sorption. Sorption kinetics are assumed to be governed by a first-order rate model, and degradation is assumed to occur in the aqueous (i.e.,mobile) phase only. As an extension of a previously published moment analysis of a model with similar assumptions, an explicit analytical solution is presented for the zeroth, first, and second spatial moments, as well as equations that describe the behavior of the first and second moments at long times. Moment simulations show that when the degradation rate is relatively large compared to the sorption rate, there are time periods in which the first and second spatial moments of the solute concentration distribution (the mean and variance, respectively) decrease over time. At long times, it is seen that the first and second moments increase linearly with time, indicating that velocity and dispersion are constant.
C1 [Huang, Junqi] US EPA, Natl Risk Management Res Lab, Ground Water & Ecosyst Restorat Div, Ada, OK 74821 USA.
[Goltz, Mark Neil] US Air Force, Dept Syst Engn & Management, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Goltz, MN (reprint author), US Air Force, Dept Syst Engn & Management, Inst Technol, 2950 Hobson Way,Bldg 640, Wright Patterson AFB, OH 45433 USA.
EM huang.junqi@epa.gov; mark.goltz@afit.edu
FU Strategic Environmental Research and Development Program (SERDP)
[ER-1737]
FX The authors appreciate the very helpful comments of two anonymous
reviewers. Financial support was provided by Strategic Environmental
Research and Development Program (SERDP) Project ER-1737. Any opinions
expressed in this paper are those of the authors and do not,
necessarily, reflect the official positions and policies of the U.S.
EPA, the United States Air Force, Department of Defense, nor the U.S.
government. Any mention of products or trade names does not constitute
recommendation for use by the U.S. EPA.
NR 11
TC 0
Z9 0
U1 0
U2 3
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 1084-0699
EI 1943-5584
J9 J HYDROL ENG
JI J. Hydrol. Eng.
PD MAY 1
PY 2014
VL 19
IS 5
BP 1053
EP 1058
DI 10.1061/(ASCE)HE.1943-5584.0000885
PG 6
WC Engineering, Civil; Environmental Sciences; Water Resources
SC Engineering; Environmental Sciences & Ecology; Water Resources
GA AE9SA
UT WOS:000334348100020
ER
PT J
AU Just, RS
Scheible, MK
Fast, SA
Sturk-Andreaggi, K
Higginbotham, JL
Lyons, EA
Bush, JM
Peck, MA
Ring, JD
Diegoli, TM
Rock, AW
Huber, GE
Nagl, S
Strobl, C
Zimmermann, B
Parson, W
Irwin, JA
AF Just, Rebecca S.
Scheible, Melissa K.
Fast, Spence A.
Sturk-Andreaggi, Kimberly
Higginbotham, Jennifer L.
Lyons, Elizabeth A.
Bush, Jocelyn M.
Peck, Michelle A.
Ring, Joseph D.
Diegoli, Toni M.
Roeck, Alexander W.
Huber, Gabriela E.
Nagl, Simone
Strobl, Christina
Zimmermann, Bettina
Parson, Walther
Irwin, Jodi A.
TI Development of forensic-quality full mtGenome haplotypes: Success rates
with low template specimens
SO FORENSIC SCIENCE INTERNATIONAL-GENETICS
LA English
DT Article
DE Mitochondrial genome; mtDNA; Sequencing; Low template specimens;
Automation
ID HUMAN MITOCHONDRIAL-DNA; CONTROL REGION; DATABASES; GENOMES
AB Forensic mitochondrial DNA (mtDNA) testing requires appropriate, high quality reference population data for estimating the rarity of questioned haplotypes and, in turn, the strength of the mtDNA evidence. Available reference databases (SWGDAM, EMPOP) currently include information from the mtDNA control region; however, novel methods that quickly and easily recover mtDNA coding region data are becoming increasingly available. Though these assays promise to both facilitate the acquisition of mitochondrial genome (mtGenome) data and maximize the general utility of mtDNA testing in forensics, the appropriate reference data and database tools required for their routine application in forensic casework are lacking. To address this deficiency, we have undertaken an effort to: (1) increase the large-scale availability of high-quality entire mtGenome reference population data, and (2) improve the information technology infrastructure required to access/search mtGenome data and employ them in forensic casework.
Here, we describe the application of a data generation and analysis workflow to the development of more than 400 complete, forensic-quality mtGenomes from low DNA quantity blood serum specimens as part of a U.S. National Institute of Justice funded reference population databasing initiative. We discuss the minor modifications made to a published mtGenome Sanger sequencing protocol to maintain a high rate of throughput while minimizing manual reprocessing with these low template samples. The successful use of this semi-automated strategy on forensic-like samples provides practical insight into the feasibility of producing complete mtGenome data in a routine casework environment, and demonstrates that large (> 2 kb) mtDNA fragments can regularly be recovered from high quality but very low DNA quantity specimens. Further, the detailed empirical data we provide on the amplification success rates across a range of DNA input quantities will be useful moving forward as PCR-based strategies for mtDNA enrichment are considered for targeted next-generation sequencing workflows. (C) 2014 The Authors. Published by Elsevier Ireland Ltd. All rights reserved.
C1 [Just, Rebecca S.; Scheible, Melissa K.; Fast, Spence A.; Sturk-Andreaggi, Kimberly; Higginbotham, Jennifer L.; Lyons, Elizabeth A.; Bush, Jocelyn M.; Peck, Michelle A.; Ring, Joseph D.; Diegoli, Toni M.; Irwin, Jodi A.] Armed Forces DNA Identificat Lab, Dover Afb, DE 19902 USA.
[Just, Rebecca S.; Scheible, Melissa K.; Fast, Spence A.; Sturk-Andreaggi, Kimberly; Higginbotham, Jennifer L.; Lyons, Elizabeth A.; Bush, Jocelyn M.; Peck, Michelle A.; Ring, Joseph D.; Diegoli, Toni M.; Irwin, Jodi A.] Amer Registry Pathol, Camden, DE 19934 USA.
[Just, Rebecca S.] Univ Maryland, College Pk, MD 20740 USA.
[Roeck, Alexander W.; Huber, Gabriela E.; Nagl, Simone; Strobl, Christina; Zimmermann, Bettina; Parson, Walther] Med Univ Innsbruck, Inst Legal Med, A-6020 Innsbruck, Austria.
[Parson, Walther] Penn State Eberly Coll Sci, University Pk, PA 16802 USA.
RP Just, RS (reprint author), Amer Registry Pathol, 15245 Shady Grove Rd,Suite 335, Rockville, MD 20850 USA.
EM rebecca.s.just.ctr@mail.mil
OI Parson, Walther/0000-0002-5692-2392
FU National Institute of Justice, Office of Justice Programs, U.S.
Department of Justice; American Registry of Pathology; Austrian Science
Fund (FWF) [P22880-B12]; European Union [285487]; [2011-MU-MU-K402]
FX This project was supported by Award No. 2011-MU-MU-K402 to Jodi A.
Irwin, awarded by the National Institute of Justice, Office of Justice
Programs, U.S. Department of Justice. The opinions, findings, and
conclusions or recommendations expressed in this publication are those
of the authors and do not necessarily reflect those of the Department of
Justice. The National Institute of Justice funding was administered by
the American Registry of Pathology. The work leading to these results
also received funding from the Austrian Science Fund (FWF) [P22880-B12]
and was financially supported from the European Union Seventh Framework
Programme (FP7/2007-2013) under grant agreement no 285487. None of these
entities had any role in study design; collection, analysis or
interpretation of data; in the writing of this report; or in the
decision to submit this paper for publication.
NR 16
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U1 0
U2 6
PU ELSEVIER IRELAND LTD
PI CLARE
PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000,
IRELAND
SN 1872-4973
EI 1878-0326
J9 FORENSIC SCI INT-GEN
JI Forensic Sci. Int.-Genet.
PD MAY
PY 2014
VL 10
BP 73
EP 79
DI 10.1016/j.fsigen.2014.01.010
PG 7
WC Genetics & Heredity; Medicine, Legal
SC Genetics & Heredity; Legal Medicine
GA AE4XS
UT WOS:000333991300013
PM 24637383
ER
PT J
AU Lochtefeld, DF
Ciarallo, FW
AF Lochtefeld, Darrell F.
Ciarallo, Frank W.
TI An analysis of decomposition approaches in multi-objectivization via
segmentation
SO APPLIED SOFT COMPUTING
LA English
DT Article
DE Multi-objectivization Via Decomposition (MVD); Multi-Objectivization via
Segmentation (MOS); Multi-Objectivization via Progressive Segmentation
(MOPS); Traveling Salesman Problem (TSP)
ID TRAVELING SALESMAN PROBLEM
AB Multi-objectivization via Segmentation (MOS) has been shown to give improved results over other previous multi-objectivization approaches. This paper explores the mechanisms that make different segmentations in MOS successful in the context of the Traveling Salesman Problem (TSP). A variety of new segmentation methods are analyzed and theories regarding their performance are presented. Spatial segmentation methods are compared with other adaptive and static decomposition methods. Insight into why previous adaptive methods performed well is provided. New decomposition methods are proposed and several of these methods are shown to attain better performance than previously known methods of decomposition. The convergence of various degrees of multi-objectivization is examined leading to a new, more general segmentation algorithm, Multi-Objectivization via Progressive Segmentation (MOPS). MOPS combines the single-objective genetic algorithm with multi-objectivization in a general form. In a given run MOPS can progress from a more traditional single objective method to a strong multi-objectivization method. MOPS attempts to improve the ratio of fitness improvements to fitness decrements, signal-to-noise ratio (SNR), over the course of an evolutionary optimization based on the principle that often fitness improvements are generally easier to find early in the run rather than late in the run. It is shown that MOPS provides robust performance across a variety of problem instances and different computational budgets. Published by Elsevier B.V.
C1 [Lochtefeld, Darrell F.] Air Force Res Lab, Area B, Wright Patterson AFB, OH 45433 USA.
[Ciarallo, Frank W.] Wright State Univ, BIE Dept, Dayton, OH 45435 USA.
RP Lochtefeld, DF (reprint author), Air Force Res Lab, Area B, 2800 Q St,Bldg 824, Wright Patterson AFB, OH 45433 USA.
EM darrell.lochtefeld@wpafb.af.mil; frank.ciarallo@wright.edu
NR 23
TC 3
Z9 3
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1568-4946
EI 1872-9681
J9 APPL SOFT COMPUT
JI Appl. Soft. Comput.
PD MAY
PY 2014
VL 18
BP 209
EP 222
DI 10.1016/j.asoc.2014.01.005
PG 14
WC Computer Science, Artificial Intelligence; Computer Science,
Interdisciplinary Applications
SC Computer Science
GA AD2HW
UT WOS:000333056400019
ER
PT J
AU Bedwell, WL
Salas, E
Funke, GJ
Knott, BA
AF Bedwell, Wendy L.
Salas, Eduardo
Funke, Gregory J.
Knott, Benjamin A.
TI Team workload: A multilevel perspective
SO ORGANIZATIONAL PSYCHOLOGY REVIEW
LA English
DT Article
DE Groups/teams; multilevel theory; teamwork; team workload; workload
capacity
ID EVENT-RELATED DESYNCHRONIZATION; SHARED MENTAL MODELS; TIME PRESSURE;
TASK COMPLEXITY; JOB-PERFORMANCE; SUSTAINED ATTENTION;
PERSON-ORGANIZATION; GROUP EFFICACY; COORDINATION; FIT
AB Extensive research has examined the effects of workload on individual performance. Despite the increasing prevalence of teams addressing complex tasks with high workload, less attention has focused on workload distributions beyond the individual to the team level, likely due to the inherent complexity of defining and measuring team workload. By drawing upon previous work by Funke et al. (2012), the authors synthesize existing literature detailing individual/team performance and workload theory and empirical findings across research domains. Based on this synthesis, a multilevel, theoretically derived framework of team workload, rooted in the science of individual/team performance in complex, dynamic environments is proposed.
C1 [Bedwell, Wendy L.] Univ S Florida, I O Psychol, Tampa, FL 33620 USA.
[Bedwell, Wendy L.] Univ Cent Florida, Orlando, FL 32826 USA.
[Salas, Eduardo] Univ Cent Florida, Psychol, Orlando, FL 32826 USA.
[Funke, Gregory J.; Knott, Benjamin A.] US Air Force, Res Labs, Human Effectiveness Directorate, Wright Patterson AFB, OH USA.
RP Salas, E (reprint author), Univ Cent Florida, Dept Psychol, 3100 Technol Pkwy, Orlando, FL 32826 USA.
EM esalas@ist.ucf.edu
NR 148
TC 3
Z9 3
U1 8
U2 20
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 2041-3866
EI 2041-3874
J9 ORGAN PSYCHOL REV
JI Organ. Psychol. Rev.
PD MAY
PY 2014
VL 4
IS 2
BP 99
EP 123
DI 10.1177/2041386613502665
PG 25
WC Psychology, Applied; Management
SC Psychology; Business & Economics
GA CI5TK
UT WOS:000354822500001
ER
PT J
AU Kontur, FJ
Terry, NB
AF Kontur, Frederick J.
Terry, Nathan B.
TI Motivating Students to Do Homework
SO PHYSICS TEACHER
LA English
DT Article
C1 [Kontur, Frederick J.; Terry, Nathan B.] US Air Force Acad, Dept Phys, Usaf Acad, CO 80840 USA.
RP Kontur, FJ (reprint author), US Air Force Acad, Dept Phys, 2354 Fairchild Dr,Suite 2A33, Usaf Acad, CO 80840 USA.
EM Frederick.Kontur@usafa.edu
OI Kontur, Frederick/0000-0002-8802-5653
NR 8
TC 3
Z9 3
U1 0
U2 2
PU AMER ASSN PHYSICS TEACHERS
PI COLLEGE PK
PA 5110 ROANOKE PLACE SUITE 101, COLLEGE PK, MD 20740 USA
SN 0031-921X
J9 PHYS TEACH
JI Phys. Teach.
PD MAY
PY 2014
VL 52
IS 5
BP 295
EP 297
DI 10.1119/1.4872413
PG 3
WC Physics, Multidisciplinary
SC Physics
GA CX5XZ
UT WOS:000365777100016
ER
PT J
AU Carney, C
Paul, A
Venugopal, S
Parthasarathy, T
Binner, J
Katz, A
Brown, P
AF Carney, Carmen
Paul, Anish
Venugopal, Saranya
Parthasarathy, Triplicane
Binner, Jon
Katz, Allan
Brown, Peter
TI Qualitative analysis of hafnium diboride based ultra high temperature
ceramics under oxyacetylene torch testing at temperatures above 2100
degrees C
SO JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
LA English
DT Article
DE Hafnium diboride; Silicon carbide; Tungsten silicide; Oxidation; Ultra
high temperature ceramics
ID OXY-ACETYLENE FLAME; OXIDATION RESISTANCE; SILICON-CARBIDE; ZRB2-SIC
COMPOSITES; ZIRCONIUM DIBORIDE; TUNGSTEN CARBIDE; BEHAVIOR; ADDITIONS;
C-2
AB Oxidation tests were carried out on HfB2-SiC, HfB2-HfC, HfB2-WC-SiC, and HfB2-WSi2 ceramics using an oxyacetylene torch. The samples were oxidized between 2100 and 2300 degrees C. From cross-sectional images, scale non-adherence was noted as a limiting factor in oxidation resistance. The sample with the best scale adherence was HfB2-WSi2. Factors involving scale non-adherence such as vapor pressure, coefficient of thermal expansion mismatch and phase transformations were considered. In comparing the scale adherence of the samples it was hypothesized that vapor pressure buildup is the principal contributing factor in the scale adherence differences observed among the tested samples. However, the coefficient of thermal expansion mismatch and HfO2 phase transformation cannot be neglected as contributing factors to scale non-adherence in all samples. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Carney, Carmen; Parthasarathy, Triplicane; Katz, Allan] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Carney, Carmen; Parthasarathy, Triplicane] Universal Energy Syst Inc, Dayton, OH 45432 USA.
[Paul, Anish; Venugopal, Saranya; Binner, Jon] Univ Loughborough, Dept Mat, Loughborough LE11 3TU, Leics, England.
[Brown, Peter] Def Sci & Technol Lab, Salisbury SP4 0JQ, Wilts, England.
RP Carney, C (reprint author), US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM carmen.carney.ctr@us.af.mil
NR 36
TC 10
Z9 10
U1 1
U2 42
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0955-2219
EI 1873-619X
J9 J EUR CERAM SOC
JI J. Eur. Ceram. Soc.
PD MAY
PY 2014
VL 34
IS 5
BP 1045
EP 1051
DI 10.1016/j.jeurceramsoc.2013.11.018
PG 7
WC Materials Science, Ceramics
SC Materials Science
GA AA8JD
UT WOS:000331340900001
ER
PT J
AU Kim, JO
Ku, ZY
Krishna, S
Kang, SW
Lee, SJ
Jun, YC
Urbas, A
AF Kim, Jun Oh
Ku, Zahyun
Krishna, Sanjay
Kang, Sang-Woo
Lee, Sang Jun
Jun, Young Chul
Urbas, Augustine
TI Simulation and analysis of grating-integrated quantum dot infrared
detectors for spectral response control and performance enhancement
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID WAVE-GUIDE; PHOTODETECTORS; ARRAYS; EFFICIENCY; PROGRESS; DESIGN
AB We propose and analyze a novel detector structure for pixel-level multispectral infrared imaging. More specifically, we investigate the device performance of a grating-integrated quantum dots-in-a-well photodetector under backside illumination. Our design uses 1-dimensional grating patterns fabricated directly on a semiconductor contact layer and, thus, adds a minimal amount of additional effort to conventional detector fabrication flows. We show that we can gain wide-range control of spectral response as well as large overall detection enhancement by adjusting grating parameters. For small grating periods, the spectral responsivity gradually changes with parameters. We explain this spectral tuning using the Fabry-Perot resonance and effective medium theory. For larger grating periods, the responsivity spectra get complicated due to increased diffraction into the active region, but we find that we can obtain large enhancement of the overall detector performance. In our design, the spectral tuning range can be larger than 1 mu m, and, compared to the unpatterned detector, the detection enhancement can be greater than 92% and 148% for parallel and perpendicular polarizations. Our work can pave the way for practical, easy-to-fabricate detectors, which are highly useful for many infrared imaging applications. (C) 2014 AIP Publishing LLC.
C1 [Kim, Jun Oh; Krishna, Sanjay] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
[Ku, Zahyun; Urbas, Augustine] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Kim, Jun Oh; Kang, Sang-Woo; Lee, Sang Jun] Korea Res Inst Stand & Sci, Div Ind Metrol, Taejon 305340, South Korea.
[Jun, Young Chul] Inha Univ, Dept Phys, Inchon 402751, South Korea.
RP Kim, JO (reprint author), Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
EM youngchul.jun@inha.ac.kr; Augustine.Urbas@wpafb.af.mil
RI Jun, Young Chul/I-2274-2013
OI Jun, Young Chul/0000-0002-7578-8811
FU Inha University Research Grant [INHA-47296]; National Research
Foundation of Korea (NRF) Grant - Korea government (Ministry of Science,
ICT & Future Planning) [2008-0061893]; MSIP (Ministry of Science,
ICT&Future Planning), Korea, under the ITRC (Information Technology
Research Center) support Program [NIPA-2013-H0301-13-1010]; Korea
Research Institute of Standards and Science grant [JP2012-0001];
[FA4600-06-0003]; [FA9453-13-1-0284]
FX S.K. acknowledges the support through Contract Nos. FA4600-06-0003 and
FA9453-13-1-0284. Y.C.J. acknowledges the supports from Inha University
Research Grant (No. INHA-47296), the National Research Foundation of
Korea (NRF) Grant funded by the Korea government (Ministry of Science,
ICT & Future Planning) (No. 2008-0061893), and the MSIP (Ministry of
Science, ICT&Future Planning), Korea, under the ITRC (Information
Technology Research Center) support Program (No.
NIPA-2013-H0301-13-1010) supervised by the NIPA (National IT Industry
Promotion Agency). S.J.L. acknowledges the support from Korea Research
Institute of Standards and Science grant, JP2012-0001.
NR 35
TC 1
Z9 1
U1 4
U2 32
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 28
PY 2014
VL 115
IS 16
AR 163101
DI 10.1063/1.4871855
PG 6
WC Physics, Applied
SC Physics
GA AG2EH
UT WOS:000335228400001
ER
PT J
AU Mehmood, F
Pachter, R
AF Mehmood, F.
Pachter, R.
TI Density functional theory study of chemical sensing on surfaces of
single-layer MoS2 and graphene
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID FIELD-EFFECT TRANSISTORS; MOLECULAR-DYNAMICS; ADSORPTION;
1ST-PRINCIPLES; DEFECTS; GAS
AB In this work, density functional theory (DFT) calculations have been used to investigate chemical sensing on surfaces of single-layer MoS2 and graphene, considering the adsorption of the chemical compounds triethylamine, acetone, tetrahydrofuran, methanol, 2,4,6-trinitrotoluene, o-nitrotoluene, o-dichlorobenzene, and 1,5-dicholoropentane. Physisorption of the adsorbates on free-standing surfaces was analyzed in detail for optimized material structures, considering various possible adsorption sites. Similar adsorption characteristics for the two surface types were demonstrated, where inclusion of a correction to the DFT functional for London dispersion was shown to be important to capture interactions at the interface of molecular adsorbate and surface. Charge transfer analyses for adsorbed free-standing surfaces generally demonstrated very small effects. However, charge transfer upon inclusion of the underlying SiO2 substrate rationalized experimental observations for some of the adsorbates considered. A larger intrinsic response for the electron-donor triethylamine adsorbed on MoS2 as compared to graphene was demonstrated, which may assist in devising chemical sensors for improved sensitivity. (C) 2014 AIP Publishing LLC.
C1 [Mehmood, F.; Pachter, R.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Pachter, R (reprint author), Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM ruth.pachter@us.af.mil
FU Air Force Office of Scientific Research through a National Research
Council (NRC) postdoctoral fellowship
FX Support for this work was provided by the Air Force Office of Scientific
Research through a National Research Council (NRC) postdoctoral
fellowship. The AFRL DoD Supercomputing Resource Center is acknowledged
for providing computational resources and helpful support.
NR 32
TC 6
Z9 6
U1 8
U2 143
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD APR 28
PY 2014
VL 115
IS 16
AR 164302
DI 10.1063/1.4871687
PG 8
WC Physics, Applied
SC Physics
GA AG2EH
UT WOS:000335228400057
ER
PT J
AU Andersen, G
Gelsinger-Austin, P
Gaddipati, R
Gaddipati, P
Ghebremichael, F
AF Andersen, Geoff
Gelsinger-Austin, Paul
Gaddipati, Ravi
Gaddipati, Phani
Ghebremichael, Fassil
TI Fast, compact, autonomous holographic adaptive optics
SO OPTICS EXPRESS
LA English
DT Article
ID WAVE-FRONT SENSOR; COMPUTER-GENERATED HOLOGRAM
AB We present a closed-loop adaptive optics system based on a holographic sensing method. The system uses a multiplexed holographic recording of the response functions of each actuator in a deformable mirror. By comparing the output intensity measured in a pair of photodiodes, the absolute phase can be measured over each actuator location. From this a feedback correction signal is applied to the input beam without need for a computer. The sensing and correction is applied to each actuator in parallel, so the bandwidth is independent of the number of actuator. We demonstrate a breadboard system using a 32-actuator MEMS deformable mirror capable of operating at over 10kHz without a computer in the loop. (C) 2014 Optical Society of America
C1 [Andersen, Geoff] US Air Force Acad, HQ USAFA DFP, Laser & Opt Res Ctr, Colorado Springs, CO 80840 USA.
[Andersen, Geoff; Gelsinger-Austin, Paul; Gaddipati, Ravi; Gaddipati, Phani; Ghebremichael, Fassil] HUA Inc, Colorado Springs, CO 80907 USA.
RP Andersen, G (reprint author), US Air Force Acad, HQ USAFA DFP, Laser & Opt Res Ctr, Ste 2A31,2354 Fairchild Dr, Colorado Springs, CO 80840 USA.
EM huainc@comcast.net
FU United States Air Force Academy; Air Force Office of Scientific
Research; High Energy Laser Joint Technology Office
FX We wish to acknowledge the support for this project from the United
States Air Force Academy, the Air Force Office of Scientific Research as
well as the High Energy Laser Joint Technology Office.
NR 13
TC 7
Z9 7
U1 0
U2 11
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD APR 21
PY 2014
VL 22
IS 8
BP 9432
EP 9441
DI 10.1364/OE.22.009432
PG 10
WC Optics
SC Optics
GA AH1SW
UT WOS:000335902200061
PM 24787832
ER
PT J
AU Husaini, S
Bedford, RG
AF Husaini, S.
Bedford, R. G.
TI Graphene saturable absorber for high power semiconductor disk laser
mode-locking
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID SURFACE-EMITTING LASER; ULTRAFAST LASERS; LAYER GRAPHENE; OUTPUT POWER;
FS PULSES; VECSEL; ABSORPTION; GENERATION; PHOTONICS; SINGLE
AB Here, we report on the development of an antiresonant graphene-based one-dimensional structure which allows the control of linear and nonlinear device performance through optical confinement. A record average output in excess of 10W is achieved by integrating this antiresonant graphene saturable absorber mirror into a vertical-external-cavity-surface-emitting-laser at 1030 nm, which leads to strong evidence of mode-locking, generating pulses with energies up to 2.8 nJ and a pulsewidth of 353 fs. (C) 2014 AIP Publishing LLC.
C1 [Husaini, S.] Wyle, Beavercreek, OH 45431 USA.
[Husaini, S.; Bedford, R. G.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Bedford, RG (reprint author), Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
EM robert.bedford@us.af.mil
NR 41
TC 27
Z9 28
U1 1
U2 45
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD APR 21
PY 2014
VL 104
IS 16
AR 161107
DI 10.1063/1.4872258
PG 4
WC Physics, Applied
SC Physics
GA AG0ZX
UT WOS:000335145600007
ER
PT J
AU Harley, JL
Rankin, BA
Blunck, DL
Gore, JP
Gross, KC
AF Harley, Jacob L.
Rankin, Brent A.
Blunck, David L.
Gore, Jay P.
Gross, Kevin C.
TI Imaging Fourier-transform spectrometer measurements of a turbulent
nonpremixed jet flame
SO OPTICS LETTERS
LA English
DT Article
ID SPECTROSCOPY; TEMPERATURE
AB This work presents recent measurements of a CH4/H-2/N-2 turbulent nonpremixed jet flame using an imaging Fourier-transform spectrometer (IFTS). Spatially resolved (128 x 192 pixels, 0.72 mm/pixel) mean radiance spectra were collected between 1800 cm(-1) <= (nu) over tilde <= 4500 cm(-1) (2.22 mu m <= lambda <= 5.55 mu m) at moderate spectral resolution (delta(nu) over tilde = 16 cm(-1), (delta lambda) over bar = 20 nm) spanning the visible flame. Higher spectral-resolution measurements (delta(nu) over tilde = 0.25 cm(-1), (delta lambda) over bar = 0.3 nm) were also captured on a smaller window (8 x 192) at 20, 40, and 60 diameters above the jet exit and reveal the rotational fine structure associated with various vibrational transitions in CH4, CO2, CO, and H2O. These new imaging measurements compare favorably with existing spectra acquired at select flame locations, demonstrating the capability of IFTS for turbulent combustion studies. (C) 2014 Optical Society of America
C1 [Harley, Jacob L.; Gross, Kevin C.] Air Force Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
[Rankin, Brent A.] Innovat Sci Solut Inc, Dayton, OH 45459 USA.
[Blunck, David L.] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
[Gore, Jay P.] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA.
RP Gross, KC (reprint author), Air Force Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
EM kevin.gross@afit.edu
RI Rankin, Brent/A-1598-2017
OI Rankin, Brent/0000-0002-5967-9527
NR 11
TC 6
Z9 6
U1 1
U2 9
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
EI 1539-4794
J9 OPT LETT
JI Opt. Lett.
PD APR 15
PY 2014
VL 39
IS 8
BP 2350
EP 2353
DI 10.1364/OL.39.002350
PG 4
WC Optics
SC Optics
GA AE7GA
UT WOS:000334163800035
PM 24978990
ER
PT J
AU Senkov, ON
Senkova, SV
Woodward, C
AF Senkov, O. N.
Senkova, S. V.
Woodward, C.
TI Effect of aluminum on the microstructure and properties of two
refractory high-entropy alloys
SO ACTA MATERIALIA
LA English
DT Article
DE Refractory alloys; Phase composition; Crystal structure; Microstructure;
Mechanical properties
ID PRINCIPAL-ELEMENT ALLOYS; SOLID-SOLUTION PHASE; V-ZR SYSTEM;
NBCRMO0.5TA0.5TIZR ALLOY; MULTICOMPONENT ALLOYS; LOW-DENSITY; DESIGN;
STABILITY; OXIDATION
AB The microstructure, phase composition and mechanical properties of the AlMo0.5NbTa0.5TiZr and Al0.4Hf0.6NbTaTiZr high-entropy alloys are reported. The AlMo0.5NbTa0.5TiZr alloy consists of two body-centered cubic (bcc) phases with very close lattice parameters, a(1) = 326.8 pm and a(2) = 332.4 pm. One phase was enriched with Mo, Nb and Ta and another phase was enriched with Al and Zr. The phases formed nano-lamellae modulated structure inside equiaxed grains. The alloy had a density of rho = 7.40 g cm(-3) and Vickers hardness H-v = 5.8 GPa. Its yield strength was 2000 MPa at 298 K and 745 MPa at 1273 K. The Al0.4Hf0.6NbTaTiZr had a single-phase bcc structure, with the lattice parameter a= 336.7 pm. This alloy had a density rho = 9.05 g cm(-3), Vickers microhardness H-v = 4.9 GPa, and its yield strength at 298 K and 1273 K was 1841 MPa and 298 MPa, respectively. The properties of these Al-containing alloys were compared with the properties of the parent CrMo0.5NbTa0.5TiZr and HfNbTaTiZr alloys and the beneficial effects from the Al additions on the microstructure and properties were outlined. A thermodynamic calculation of the solidification and equilibrium phase diagrams was conducted for these alloys and the calculated results were compared with the experimental data. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Senkov, O. N.; Senkova, S. V.; Woodward, C.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Senkov, ON (reprint author), Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM oleg.senkov@wpafb.af.mil
OI Senkov, Oleg/0000-0001-5587-415X
FU Air Force Research Laboratory Director's fund; Air Force on-site
[FA8650-10-D-5226]
FX Valuable discussions with Drs. Jonathan Miller, Daniel Miracle, Jay
Tiley and Fan Zhang are recognized. This work was supported through the
Air Force Research Laboratory Director's fund and through the Air Force
on-site Contract No. FA8650-10-D-5226 conducted by UES, Inc., Dayton,
Ohio.
NR 32
TC 52
Z9 53
U1 34
U2 137
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
EI 1873-2453
J9 ACTA MATER
JI Acta Mater.
PD APR 15
PY 2014
VL 68
BP 214
EP 228
DI 10.1016/j.actamat.2014.01.029
PG 15
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA AE5BG
UT WOS:000334002200022
ER
PT J
AU Jensen, KL
Shiffler, DA
Petillo, JJ
Pan, ZG
Luginsland, JW
AF Jensen, Kevin L.
Shiffler, Donald A.
Petillo, John J.
Pan, Zhigang
Luginsland, John W.
TI Emittance, surface structure, and electron emission
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID HIGH-AVERAGE-POWER; FIELD-EMISSION; SPACE-CHARGE; CARBON NANOTUBES;
CATHODES; LASERS; PHOTOINJECTORS; PHOTOEMISSION; UNIFORMITY; AMPLIFIERS
AB The emittance of high brightness electron sources, particularly field emitters and photocathodes but also thermionic sources, is increased by surface roughness on the emitter. Such structure causes local field enhancement and complicates both the prediction of emittance and the underlying emission models on which such predictions depend. In the present work, a method to find the emission trajectories near regions of high field enhancement is given and applied to emittance predictions for field, photo, and thermal emission for an analytically tractable hemispherical model. The dependence of the emittance on current density, spatial variation, and acceleration close to the emission site is identified and the impact of space charge discussed. The methodology is extensible to field emission from close-spaced wirelike structures, in particular, and extensions to that configuration are discussed. The models have application to electron sources for high frequency vacuum electronics, high power microwave devices, and free-electron lasers.
C1 [Jensen, Kevin L.] Naval Res Lab, Washington, DC 20375 USA.
[Shiffler, Donald A.] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
[Petillo, John J.] Leidos, Billerica, MA 01821 USA.
[Pan, Zhigang] Univ Maryland, IREAP, College Pk, MD 20742 USA.
[Luginsland, John W.] Air Force Off Sci Res, Arlington, VA 22203 USA.
RP Jensen, KL (reprint author), Naval Res Lab, Code 6843, Washington, DC 20375 USA.
EM kevin.jensen@nrl.navy.mil
RI Jensen, Kevin/I-1269-2015
OI Jensen, Kevin/0000-0001-8644-1680
NR 82
TC 17
Z9 17
U1 1
U2 23
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD APR 15
PY 2014
VL 17
IS 4
AR 043402
DI 10.1103/PhysRevSTAB.17.043402
PG 19
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA CJ5VT
UT WOS:000355561000001
ER
PT J
AU Holbrook, C
Chakraborty, S
Ravindren, S
Boolchand, P
Goldstein, JT
Stutz, CE
AF Holbrook, C.
Chakraborty, Shibalik
Ravindren, S.
Boolchand, P.
Goldstein, Jonathan T.
Stutz, C. E.
TI Topology and glass structure evolution in
(BaO)(x)((B2O3)(32)(SiO2)(68))(100-x) ternary-Evidence of rigid,
intermediate, and flexible phases
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID SELF-ORGANIZATION; BOROSILICATE GLASSES; CHALCOGENIDE GLASSES; MELT
HOMOGENIZATION; NETWORK GLASSES; SHORT-RANGE; RAMAN; TEMPERATURE;
TRANSITIONS; PERCOLATION
AB We examine variations in the glass transition temperature (T-g(x)), molar volume (V-m(x)), and Raman scattering of titled glasses as a function of modifier (BaO) content in the 25% < x < 48% range. Three distinct regimes of behavior are observed; at low x, 24% < x < 29% range, the modifier largely polymerizes the backbone, T-g(x) increase, features that we identify with the stressed-rigid elastic phase. At high x, 32% < x < 48% range, the modifier depolymerizes the network by creating non-bridging oxygen (NBO) atoms; in this regime T-g(x) decreases, and networks are viewed to be in the flexible elastic phase. In the narrow intermediate x regime, 29% < x < 32% range, T-g(x) shows a broad global maximum almost independent of x, and Raman mode scattering strengths and mode frequencies become relatively x-independent, V-m(x) show a global minimum, features that we associate with the isostatically rigid elastic phase, also called the intermediate phase. In this phase, medium range structures adapt as revealed by the count of Lagrangian bonding constraints and Raman mode scattering strengths. (C) 2014 AIP Publishing LLC.
C1 [Holbrook, C.] AFRL, RYDP, Wright Patterson AFB, OH 45433 USA.
[Chakraborty, Shibalik; Ravindren, S.; Boolchand, P.] Univ Cincinnati, Dept Elect & Comp Syst, Coll Engn & Appl Sci, Cincinnati, OH 45221 USA.
[Goldstein, Jonathan T.; Stutz, C. E.] AFRL, RXAN, Wright Patterson AFB, OH 45433 USA.
RP Holbrook, C (reprint author), AFRL, RYDP, 2241 Avion Circle,B620, Wright Patterson AFB, OH 45433 USA.
FU University of Dayton [RSC 12025]; AFOSR [FA8650-11-D-5401/0008]; NSF
[DMR-94-24556]
FX The present work was supported by Subcontract No. RSC 12025 from
University of Dayton on Contract No. FA8650-11-D-5401/0008 from AFOSR.
All Raman scattering work was performed on a facility acquired with
support from NSF (Grant No. DMR-94-24556).
NR 41
TC 2
Z9 2
U1 0
U2 15
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD APR 14
PY 2014
VL 140
IS 14
AR 144506
DI 10.1063/1.4869348
PG 12
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AF6PI
UT WOS:000334836600024
PM 24735304
ER
PT J
AU Melgaard, S
Seletskiy, D
Polyak, V
Asmerom, Y
Sheik-Bahae, M
AF Melgaard, Seth
Seletskiy, Denis
Polyak, Victor
Asmerom, Yemane
Sheik-Bahae, Mansoor
TI Identification of parasitic losses in Yb:YLF and prospects for optical
refrigeration down to 80K
SO OPTICS EXPRESS
LA English
DT Article
ID THULIUM-DOPED GLASS; LASER; TEMPERATURE; CRYSTALS; SOLIDS
AB Systematic study of Yb doping concentration in the Yb:YLF cryocoolers by means of optical and mass spectroscopies has identified iron ions as the main source of the background absorption. Parasitic absorption was observed to decrease with Yb doping, resulting in optical cooling of a 10% Yb:YLF sample to 114K +/- 1K, with room temperature cooling power of 750 mW and calculated minimum achievable temperature of 93 K. (C) 2014 Optical Society of America
C1 [Melgaard, Seth; Sheik-Bahae, Mansoor] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
[Melgaard, Seth] Air Force Res Lab, Albuquerque, NM USA.
[Seletskiy, Denis] Univ Konstanz, Dept Phys, D-78457 Constance, Germany.
[Seletskiy, Denis] Univ Konstanz, Ctr Appl Photon, D-78457 Constance, Germany.
[Polyak, Victor; Asmerom, Yemane] Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USA.
RP Melgaard, S (reprint author), Univ New Mexico, Dept Phys & Astron, 1919 Lomas Blvd NE, Albuquerque, NM 87131 USA.
EM melgaard@unm.edu
RI Seletskiy, Denis/C-1372-2011;
OI Seletskiy, Denis/0000-0003-3480-4595; Polyak, Victor/0000-0002-2010-1066
FU DARPA [GRANT 10669320]; Thermo Dynamic Films (TDF) through an STTR
Grant; AFRL [FA94531310223]; Natiol Research Council Research
Associateship Award at the Air Force Research Laboratory; National
Science Foundation [1160764]; EU FP7 Marie Curie Zukunftskolleg Incoming
Fellowship Programme, University of Konstanz [291784]
FX The authors thank Markus Hehlen and Richard Epstein for useful
discussions, and AC Materials (Tarpon Springs, FL) for customized sample
growth and preparation. The work at UNM was supported by DARPA (GRANT
10669320), naThermo Dynamic Films (TDF) through an STTR Grant, AFRL
(FA94531310223). SDM acknowledges the support of a Natiol Research
Council Research Associateship Award at the Air Force Research
Laboratory. DVS acknowledges support by the National Science Foundation
under Grant No. 1160764 and partial support by the EU FP7 Marie Curie
Zukunftskolleg Incoming Fellowship Programme, University of Konstanz
(Grant No. 291784).
NR 25
TC 13
Z9 13
U1 4
U2 16
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD APR 7
PY 2014
VL 22
IS 7
BP 7756
EP 7764
DI 10.1364/OE.22.007756
PG 9
WC Optics
SC Optics
GA AH1RN
UT WOS:000335898700040
PM 24718151
ER
PT J
AU He, L
Li, MX
Urbas, A
Hu, B
AF He, Lei
Li, Mingxing
Urbas, Augustine
Hu, Bin
TI Magnetophotoluminescence line-shape narrowing through interactions
between excited states in organic semiconducting materials
SO PHYSICAL REVIEW B
LA English
DT Article
ID MAGNETIC-FIELD DEPENDENCE; RADICAL ION-PAIRS; POLYMER-FILMS; DEVICES;
MAGNETORESISTANCE; RECOMBINATION; GENERATION; CELLS
AB We find that interactions between intermolecular excited states can cause a line-shape narrowing in magnetophotoluminescence in an organic composite containing N,N-dimethylaniline and pyrene in the liquid state. The line-shape narrowing indicates that interactions between intermolecular excited states can decrease the spin-exchange interaction within intermolecular excited states. Our analysis shows that interactions between intermolecular excited states can occur through long-range Coulomb interaction, midrange spin-orbital interaction, and short-range spin interaction, with the consequence of line-shape modification in the development of magnetic field effects. Our experimental results reveal a parameter, the interactions between intermolecular excited states, involved in the development of magnetic field effects in organic semiconducting materials.
C1 [He, Lei; Li, Mingxing; Hu, Bin] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Urbas, Augustine] Air Force Res Lab, AFRL RXBN, Wright Patterson AFB, OH 45433 USA.
RP He, L (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM bhu@utk.edu
RI Hu, Bin/A-2954-2015
OI Hu, Bin/0000-0002-1573-7625
FU Air Force Office of Scientific Research (AFOSR) [FA9550-11-1-0082]; NSF
[ECCS-0644945]; Center for Nanophase Materials Sciences [CNMS2012-106,
CNMS2012-107]; Division of Scientific User Facilities, US Department of
Energy
FX The authors acknowledge financial support from the Air Force Office of
Scientific Research (AFOSR: Grant No. FA9550-11-1-0082). The authors are
also thankful for support from NSF (Grant No. ECCS-0644945). This
research was partially conducted at the Center for Nanophase Materials
Sciences based on user projects (CNMS2012-106 and CNMS2012-107), which
is sponsored at Oak Ridge National Laboratory by the Division of
Scientific User Facilities, US Department of Energy.
NR 28
TC 7
Z9 7
U1 4
U2 23
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD APR 7
PY 2014
VL 89
IS 15
AR 155304
DI 10.1103/PhysRevB.89.155304
PG 6
WC Physics, Condensed Matter
SC Physics
GA AE6PO
UT WOS:000334116200004
ER
PT J
AU Lim, HJ
Sohn, H
DeSimio, MP
Brown, K
AF Lim, Hyung Jin
Sohn, Hoon
DeSimio, Martin P.
Brown, Kevin
TI Reference-free fatigue crack detection using nonlinear ultrasonic
modulation under various temperature and loading conditions
SO MECHANICAL SYSTEMS AND SIGNAL PROCESSING
LA English
DT Article
DE Fatigue crack detection; Nonlinear ultrasonic modulation; Reference-free
damage detection; Temperature and loading variations; PZT
ID DELAMINATION DETECTION; DAMAGE DETECTION; COMPOSITE PLATE; SPECTROSCOPY;
VARIABILITY; ACOUSTICS
AB This study presents a reference-free fatigue crack detection technique using nonlinear ultrasonic modulation. When low frequency (LF) and high frequency (HF) inputs generated by two surface-mounted lead zirconate titanate (PZT) transducers are applied to a structure, the presence of a fatigue crack can provide a mechanism for nonlinear ultrasonic modulation and create spectral sidebands around the frequency of the HF signal. The crack-induced spectral sidebands are isolated using a combination of linear response subtraction (LRS), synchronous demodulation (SD) and continuous wavelet transform (CWT) filtering. Then, a sequential outlier analysis is performed on the extracted sidebands to identify the crack presence without referring any baseline data obtained from the intact condition of the structure. Finally, the robustness of the proposed technique is demonstrated using actual test data obtained from simple aluminum plate and complex aircraft fitting-lug specimens under varying temperature and loading variations. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Lim, Hyung Jin; Sohn, Hoon] Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Taejon 305701, South Korea.
[DeSimio, Martin P.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Brown, Kevin] Air Force Res Lab, Wright Patterson AFB, OH 45430 USA.
RP Sohn, H (reprint author), Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Taejon 305701, South Korea.
EM hoonsohn@kaist.ac.kr
RI Sohn, Hoon/A-9406-2008
FU Smart IT Convergence System Research Center as Global Frontier Project
[CISS-2012M3A6A6054195]; National Research Laboratory (NRL) Program of
the National Research Foundation of Korea (NRF) [2012-0005630]; Ministry
of Education, Science and Technology (MEST); U.S. Air Force Research
Laboratory
FX This work was supported by the Smart IT Convergence System Research
Center as Global Frontier Project (CISS-2012M3A6A6054195) and the
National Research Laboratory (NRL) Program (2012-0005630) of the
National Research Foundation of Korea (NRF) both funded by the Ministry
of Education, Science and Technology (MEST), and U.S. Air Force Research
Laboratory.
NR 31
TC 11
Z9 11
U1 3
U2 33
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0888-3270
J9 MECH SYST SIGNAL PR
JI Mech. Syst. Signal Proc.
PD APR 4
PY 2014
VL 45
IS 2
BP 468
EP 478
DI 10.1016/j.ymssp.2013.12.001
PG 11
WC Engineering, Mechanical
SC Engineering
GA AB5TA
UT WOS:000331850400014
ER
PT J
AU Gumbs, G
Iurov, A
Balassis, A
Huang, DH
AF Gumbs, Godfrey
Iurov, Andrii
Balassis, Antonios
Huang, Danhong
TI Anisotropic plasmon-coupling dimerization of a pair of spherical
electron gases
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
DE plasmons; S2DEG; light absorption spectroscopy; angular momentum;
fullerenes
ID MULTIPOLE EXCITATIONS; CYLINDRICAL TUBULES; C-60 MOLECULE; FULLERENES;
MAGNETOPLASMONS; NANOTUBES; C60
AB We have discovered a novel feature in the plasmon excitations for a pair of Coulomb-coupled non-concentric spherical two-dimensional electron gases (S2DEGs). Our results show that the plasmon excitations for such pairs depend on the orientation with respect to the external electromagnetic probe field. The origin of this anisotropy of the inter-sphere Coulomb interaction is due to the directional asymmetry of the electrostatic coupling of electrons in excited states which depend on both the angular momentum quantum number L and its projection M on the axis of quantization taken as the probe E-field direction. We demonstrate the anisotropic inter-sphere Coulomb coupling in space and present semi-analytic results in the random-phase approximation both perpendicular and parallel to the axis of quantization. For the incidence of light with a finite orbital or spin angular momentum, the magnetic field generated from an induced oscillating electric dipole on one sphere can couple to an induced magnetic dipole on another sphere in a way that is dependent on whether the direction is parallel or perpendicular to the probe E field. Such an effect from the plasmon spatial correlation is expected to be experimentally observable by employing circularly polarized light or a helical light beam for incidence. The S2DEG serves as a simple model for fullerenes as well as metallic dimers, when the energy bands are far apart.
C1 [Gumbs, Godfrey; Iurov, Andrii] CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10065 USA.
[Gumbs, Godfrey] Donostia Int Phys Ctr, San Sebastian 20018, Basque Country, Spain.
[Balassis, Antonios] Fordham Univ, Dept Phys, Bronx, NY 10458 USA.
[Huang, Danhong] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Gumbs, G (reprint author), CUNY Hunter Coll, Dept Phys & Astron, 695 Pk Ave, New York, NY 10065 USA.
EM theorist.physics@gmail.com
RI DONOSTIA INTERNATIONAL PHYSICS CTR., DIPC/C-3171-2014
FU AFRL [FA 9453-07-C-0207]; Air Force Office of Scientific Research
(AFOSR)
FX This research was supported by contract no. FA 9453-07-C-0207 of AFRL.
DH would like to thank the Air Force Office of Scientific Research
(AFOSR) for support.
NR 29
TC 7
Z9 7
U1 1
U2 10
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
EI 1361-648X
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD APR 2
PY 2014
VL 26
IS 13
AR 135601
DI 10.1088/0953-8984/26/13/135601
PG 13
WC Physics, Condensed Matter
SC Physics
GA AD3YR
UT WOS:000333182900013
PM 24625751
ER
PT J
AU Cicek, I
Serres, JL
AF Cicek, Ismail
Serres, Jennifer L.
TI Safe-to-Fly Test and Evaluation of Fatigue Research Study Test Devices
SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE
LA English
DT Article
DE aeromedical flight testing; aviation fatigue; CCATT
AB Introduction: The U.S. Air Force (USAF) School of Aerospace Medicine is conducting a fatigue research study titled "Assessment of Fatigue in Deployed Critical Care Air Transport Team (CCATT) Crews" using two electronic devices onboard USAF aircraft during actual CCATT missions. Both devices were subjected to testing to support a safe-to-fly (STF) recommendation prior to their use in flight. The purpose of the test and evaluation process was to ensure the device can be safely operated in flight without posing a hazard to the research participant, crewmembers, or aircraft during an actual mission. The goal of this article is to outline the key factors involved in the STF certification process. Methods: This paper discusses the test and evaluation process for making STF recommendation and presents the rationale for selecting the applicable tests and test susceptibilities. The following STF tests were conducted: baseline assessment, vibration, electromagnetic interference, altitude, rapid decompression, and explosive atmosphere. Acceleration testing, environmental (temperature and humidity) testing, and in-flight assessments were deemed not required for the STF certification of these devices. Results: Based on the results of this study, the devices were deemed safe to the flight crew and aircraft. Conclusions: The outcome of this study was subsequent approval letters issued by the respective airframe system program offices to allow use of these devices onboard USAF C-130 E/H/J, C-17, and KC-135 aircraft.
C1 US Air Force, Aeromed Test Lab, Agile Combat Support Directorate, Wright Patterson AFB, OH 45433 USA.
USAF Sch Aerospace Med, Wright Patterson AFB, OH 45433 USA.
RP Serres, JL (reprint author), USAF Sch Aerospace Med, Dept Aeromed Res, Bldg 840,118-14,2510 Fifth St, Wright Patterson AFB, OH 45433 USA.
EM jennifer.serres@wpafb.af.mil
FU Air Mobility Command of the USAF; 711th Human Performance Wing of the
USAF Research Laboratory
FX The authors acknowledge that the STF test and evaluation of the fatigue
devices was funded by the Air Mobility Command of the USAF.
Additionally, the authors acknowledge the "Assessment of Fatigue in
Deployed CCATT Crews" research project, which includes this work, is
funded by the 711th Human Performance Wing of the USAF Research
Laboratory.
NR 21
TC 0
Z9 0
U1 0
U2 2
PU AEROSPACE MEDICAL ASSOC
PI ALEXANDRIA
PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 USA
SN 0095-6562
EI 1943-4448
J9 AVIAT SPACE ENVIR MD
JI Aviat. Space Environ. Med.
PD APR
PY 2014
VL 85
IS 4
BP 473
EP 479
DI 10.3357/ASEM.3729.2014
PG 7
WC Public, Environmental & Occupational Health; Medicine, General &
Internal; Sport Sciences
SC Public, Environmental & Occupational Health; General & Internal
Medicine; Sport Sciences
GA CB6FF
UT WOS:000349721600013
PM 24754212
ER
PT J
AU Hake, B
Eovaldi, B
Sylvester, F
AF Hake, Benjamin
Eovaldi, Benjamin
Sylvester, Francis
TI Hyperbaric oxygen therapy alters vascular reactivity independent of ATP
SO FASEB JOURNAL
LA English
DT Meeting Abstract
C1 [Hake, Benjamin; Sylvester, Francis] Grand Valley State Univ, Allendale, MI 49401 USA.
[Eovaldi, Benjamin] US Air Force, Space & Missile Med, Vandenberg AFB, CA USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU FEDERATION AMER SOC EXP BIOL
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 USA
SN 0892-6638
EI 1530-6860
J9 FASEB J
JI Faseb J.
PD APR
PY 2014
VL 28
IS 1
SU S
MA 1103.6
PG 1
WC Biochemistry & Molecular Biology; Biology; Cell Biology
SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other
Topics; Cell Biology
GA AX0OG
UT WOS:000346651001282
ER
PT J
AU Meng, HT
Nie, BL
Wong, S
Macon, C
Jin, JM
AF Meng, Huan-Ting
Nie, Bao-Lin
Wong, Steven
Macon, Charles
Jin, Jian-Ming
TI GPU Accelerated Finite-Element Computation for Electromagnetic Analysis
SO IEEE ANTENNAS AND PROPAGATION MAGAZINE
LA English
DT Article
DE Computational electromagnetics; finite element analysis;
frequency-domain analysis; high performance computing; graphics
processing units; parallel programming
ID GRAPHICS PROCESSING UNITS; GALERKIN FEM COMPUTATIONS; FDTD METHOD;
SHIELDING ENCLOSURES; CONJUGATE GRADIENTS; MULTIPLE GPUS; CUDA;
IMPLEMENTATION; SCATTERING; MOMENTS
AB General-purpose computing on graphics processing units (GPGPU), with programming models such as the Compute Unified Device Architecture (CUDA) by NVIDIA, offers the capability for accelerating the solution process of computational electromagnetics analysis. However, due to the communication-intensive nature of the finite-element algorithm, both the assembly and the solution phases cannot be implemented via fine-grained many-core GPU processors in a straightforward manner. In this paper, we identify the bottlenecks in the GPU parallelization of the Finite-Element Method for electromagnetic analysis, and propose potential solutions to alleviate the bottlenecks. We first discuss efficient parallelization strategies for the finite-element matrix assembly on a single GPU and on multiple GPUs. We then explore parallelization strategies for the finite-element matrix solution, in conjunction with parallelizable preconditioners to reduce the total solution time. We show that with a proper parallelization and implementation, GPUs are able to achieve significant speedups over OpenMP-enabled multi-core CPUs.
C1 [Meng, Huan-Ting; Nie, Bao-Lin; Jin, Jian-Ming] Univ Illinois, Dept Elect & Comp Engn, Ctr Computat Electromagnet, Urbana, IL 61801 USA.
[Wong, Steven] Dynam Res Corp, Wright Patterson AFB, OH 45433 USA.
[Macon, Charles] US Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Meng, HT (reprint author), Univ Illinois, Dept Elect & Comp Engn, Ctr Computat Electromagnet, Urbana, IL 61801 USA.
EM j-jin1@illinois.edu
FU DoD High-Performance Computing Modernization Program's PETTT initiative;
China Scholarship Council (CSC); Fundamental Research Funds for the
Central Universities of China
FX This work was supported in part by the DoD High-Performance Computing
Modernization Program's PETTT initiative. Bao-Lin Nie was on leave from
the School of Mechatronics Engineering, University of Electronic Science
and Technology of China, Chengdu, Sichuan, China 611731, and his visit
at the University of Illinois was supported by the China Scholarship
Council (CSC) and the Fundamental Research Funds for the Central
Universities of China. The authors are grateful for useful comments and
suggestions by Dr. Doug Riley of Northrop Grumman Corporation.
NR 39
TC 5
Z9 6
U1 2
U2 15
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1045-9243
EI 1558-4143
J9 IEEE ANTENN PROPAG M
JI IEEE Antennas Propag. Mag.
PD APR
PY 2014
VL 56
IS 2
BP 39
EP 62
PG 24
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA AP9KI
UT WOS:000342398300004
ER
PT J
AU Ray, MA
Turkel, MC
AF Ray, Marilyn A.
Turkel, Marian C.
TI Caring as Emancipatory Nursing Praxis The Theory of Relational Caring
Complexity
SO ADVANCES IN NURSING SCIENCE
LA English
DT Article
DE caring; human rights; nursing praxis; social justice; Theory of
Relational Caring Complexity
ID SOCIAL-JUSTICE; HUMAN-RIGHTS; CARE; HOSPITALS; FRAMEWORK; MAGNET(R);
NURSES; UPDATE
AB In the culture of health care, nurses are challenged to understand their values and beliefs as humanistic within complex technical and economically driven bureaucratic systems. This article outlines the language of social justice and human rights and the advance of a Theory of Relational Caring Complexity, which offers insights into caring as emancipatory nursing praxis. Recommendations provide knowledge of the struggle to balance economics, technology, and caring. As nurses practice from a value-driven, philosophical, and ethical social justice framework, they will find "their voice" and realize the full potential that the power of caring has on patient and organizational outcomes.
C1 [Ray, Marilyn A.] Florida Atlantic Univ, US Air Force, Nurse Corps, Boca Raton, FL 33431 USA.
[Ray, Marilyn A.] Florida Atlantic Univ, Christine E Lynn Coll Nursing, Boca Raton, FL 33431 USA.
[Turkel, Marian C.] Albert Einstein Healthcare Network, Philadelphia, PA USA.
RP Ray, MA (reprint author), Florida Atlantic Univ, US Air Force, Nurse Corps, 777 Glades Rd, Boca Raton, FL 33431 USA.
EM mray@fau.edu
NR 76
TC 2
Z9 2
U1 3
U2 14
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0161-9268
EI 1550-5014
J9 ADV NURS SCI
JI Adv. Nurs. Sci.
PD APR-JUN
PY 2014
VL 37
IS 2
BP 132
EP 146
DI 10.1097/ANS.0000000000000024
PG 15
WC Nursing
SC Nursing
GA AN6SA
UT WOS:000340725800006
PM 24786202
ER
PT J
AU Reed, A
AF Reed, Amy
TI Deployment-Related Risk Factors of Low Back Pain: A Study Among Danish
Soldiers Deployed to Iraq
SO MILITARY MEDICINE
LA English
DT Letter
C1 USAF, Washington, DC 20350 USA.
RP Reed, A (reprint author), USAF, Washington, DC 20350 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD APR
PY 2014
VL 179
IS 4
BP VIII
EP VIII
PG 1
WC Medicine, General & Internal
SC General & Internal Medicine
GA AN7UK
UT WOS:000340806300017
ER
PT J
AU Petersen, D
Pinske, K
Greener, T
AF Petersen, Drew
Pinske, Kim
Greener, Trent
TI College Coaches Corner-CrossFit
SO STRENGTH AND CONDITIONING JOURNAL
LA English
DT Article
AB CROSSFIT HAS BECOME A SIGNIFICANT FITNESS TREND, WITH MULTIPLE CROSSFIT GYMS SHOWING UP IN CITIES ACROSS THE UNITED STATES. BECAUSE OF ITS WIDESPREAD POPULARITY, MANY COLLEGIATE ATHLETES ARE FAMILIAR WITH CROSSFIT AND MAY VIEW IT AS A WAY TO TRAIN TO IMPROVE SPORTS PERFORMANCE AND REDUCE THE OPPORTUNITY FOR INJURY. AS A RESULT, OUR PANEL OF STRENGTH AND CONDITIONING COACHES WERE ASKED TO EXPRESS THEIR OPINION IN REGARD TO THE APPLICABILITY OF CROSSFIT AS A TRAINING METHOD FOR THEIR ATHLETES. IT IS IMPORTANT FOR THE READER TO REMEMBER THAT THIS IS A COLUMN, AND THE AUTHORS ARE SHARING THEIR OPINIONS REGARDING CROSSFIT.
C1 [Petersen, Drew] Humboldt State Univ, Dept Athlet, Arcata, CA 95521 USA.
[Pinske, Kim] US Air Force Acad, Dept Athlet, Colorado Springs, CO 80840 USA.
[Greener, Trent] Univ Wyoming, Dept Athlet, Laramie, WY 82071 USA.
RP Petersen, D (reprint author), Humboldt State Univ, Dept Athlet, Arcata, CA 95521 USA.
NR 0
TC 0
Z9 0
U1 3
U2 27
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1524-1602
EI 1533-4295
J9 STRENGTH COND J
JI Strength Cond. J.
PD APR
PY 2014
VL 36
IS 2
BP 56
EP 58
PG 3
WC Sport Sciences
SC Sport Sciences
GA AL4JY
UT WOS:000339100400010
ER
PT J
AU Kichambare, PD
Howell, T
Rodrigues, S
AF Kichambare, Padmakar D.
Howell, Thomas
Rodrigues, Stanley
TI Sol-Gel-Derived Lithium Superionic Conductor Li1.5Al0.5Ge1.5(PO4)(3)
Electrolyte for Solid-State Lithium-Oxygen Batteries
SO ENERGY TECHNOLOGY
LA English
DT Article
DE LAGP; lithium-oxygen batteries; solid electrolytes; sol-gel processing;
superionic conductors
ID LISICON GLASS-CERAMICS; LI-AIR BATTERIES; ELECTROCHEMICAL PROPERTIES;
CARBONATE ELECTROLYTES; IONIC-CONDUCTIVITY; LI-O-2 BATTERY; PERFORMANCE;
CHALLENGES; CATHODES; CATALYST
AB Lithium aluminium germanium phosphate (LAGP) is attracting a great deal of attention as a solid electrolyte for lithium-oxygen (Li-O-2) batteries due to its high ionic conductivity. In this study, LAGP is prepared by a sol-gel process using comparatively low-cost GeCl2 as one of the reactants. The final product (LAGP) is obtained by sintering the dry precursor gel at 900 degrees C for 6 h. The influence of the duration of water evaporation during polymerization on the microstructure of LAGP has been examined. The structure, morphology, and electrochemical properties of LAGP are investigated by employing X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption-desorption analysis, and electrochemical impedance spectroscopy. XRD studies confirm the formation of Li1.5Al0.5Ge1.5(PO4)(3) as a primary phase along with small amounts of AlPO4 and Li2O as impurity phases. LAGP specimens have ionic conductivities in the range of 10(-4) to 10(-5) Scm(-1) at room temperature. In addition, LAGP also exhibits electrocatalytic activity towards the oxygen-reduction and evolution reactions. These results demonstrate the potential of LAGP prepared by sol-gel processes as a solid electrolyte for lithium-ion conduction in solid-state lithium-oxygen batteries.
C1 [Kichambare, Padmakar D.; Howell, Thomas; Rodrigues, Stanley] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
[Howell, Thomas] GE Aviat, Cincinnati, OH 45215 USA.
RP Kichambare, PD (reprint author), Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
EM Padmakar.Kichambare@WPAFB.AF.MIL
FU Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio
FX This research was supported by the Air Force Research Laboratory,
Wright-Patterson Air Force Base, Ohio.
NR 43
TC 4
Z9 5
U1 17
U2 113
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 2194-4288
EI 2194-4296
J9 ENERGY TECHNOL-GER
JI Energy Technol.
PD APR
PY 2014
VL 2
IS 4
SI SI
BP 391
EP 396
DI 10.1002/ente.201300139
PG 6
WC Energy & Fuels
SC Energy & Fuels
GA AK3VH
UT WOS:000338352500011
ER
PT J
AU Wing, S
Ohtani, S
Johnson, J
Wilson, GR
Higuchi, T
AF Wing, Simon
Ohtani, Shinichi
Johnson, Jay
Wilson, Gordon R.
Higuchi, Tomoyuki
TI Field-aligned currents during the extreme solar minimum between the
solar cycles 23 and 24
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
DE field-aligned current; particle precipitation; solar cycle;
magnetosphere-ionosphere coupling; current width; solar
wind-magnetosphere coupling
ID INTERPLANETARY MAGNETIC-FIELD; LATITUDE BOUNDARY-LAYER; PLASMA SHEET;
BIRKELAND CURRENTS; ELECTRIC-FIELD; PRESSURE; PRECIPITATION;
CONFIGURATION; REGIONS; MODEL
AB The solar minimum between solar cycles 23 and 24 was unusually long and deep. The upward region-1 (R1) field-aligned current (FAC) response to this extreme solar minimum was investigated using Defense Meteorological Satellite Program observations. The solar cycle responses on the dayside are different than those on the nightside. The field-aligned current density (J(//)) on the dayside, at 12-17 magnetic local time (MLT), peaks in the declining phase of the solar cycle, in 2003, when the solar wind speed also peaks, whereas J(//) on the nightside, at 18-23 MLT, appears insensitive to the solar cycle. In 1995-2010, J(//) at 15-17 MLT reaches the lowest value during the extreme solar minimum in 2009, when the solar wind speed also reaches the lowest value. At 12-17 MLT, R1 is located mostly on open field lines or at the boundary layer, where the current is driven mostly by the velocity shear at the magnetopause boundary. However, on the nightside, R1 is located mostly on the closed field lines where J(//) is not driven directly and immediately by the solar wind. The nightside current width () exhibits a solar cycle effect such that is smaller at the solar minimum and smallest in 2009. However, the dayside exhibits little solar cycle effect. As a result, the FAC intensity (latitudinally integrated J(//)) exhibits a solar cycle variation at all local times and the FAC intensity is lower during the extreme solar minimum than that of the previous solar minimum.
C1 [Wing, Simon; Ohtani, Shinichi] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 21218 USA.
[Johnson, Jay] Princeton Plasma Phys Lab, Princeton, NJ USA.
[Wilson, Gordon R.] Air Force Res Lab, Albuquerque, NM USA.
[Higuchi, Tomoyuki] Inst Stat Math, Dept Stat Modeling, Tokyo, Japan.
RP Wing, S (reprint author), Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 21218 USA.
EM simon.wing@jhuapl.edu
RI Ohtani, Shinichi/E-3914-2016
OI Ohtani, Shinichi/0000-0002-9565-6840
FU NSF [ATM-0802715, AGS-1058456, ATM0902730]; NASA [NNX10AE63G,
NNX13AE12G, NNH09AM53I, NNH09AK63I, NNH11AR07I]; DOE [DE-AC02-09CH11466]
FX AFRL has been helpful in acquisition of DMSP SSJ4/SSJ5 and magnetometer
data, as has the World Data Center in Boulder, Colorado. Simon Wing
gratefully acknowledges support from NSF grants ATM-0802715 and
AGS-1058456 and NASA grants NNX10AE63G and NNX13AE12G. Jay Johnson was
funded by NASA grants (NNH09AM53I, NNH09AK63I, and NNH11AR07I), NSF
grant ATM0902730, and DOE contract DE-AC02-09CH11466.
NR 44
TC 2
Z9 2
U1 0
U2 9
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD APR
PY 2014
VL 119
IS 4
BP 2466
EP 2475
DI 10.1002/2013JA019452
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AH6CP
UT WOS:000336218600008
ER
PT J
AU Huang, YS
Huang, CY
Su, YJ
Deng, Y
Fang, XH
AF Huang, Yanshi
Huang, Cheryl Y.
Su, Yi-Jiun
Deng, Yue
Fang, Xiaohua
TI Ionization due to electron and proton precipitation during the August
2011 storm
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
DE particle impact ionization; polar cap; Fang 2013 parameterization; Fang
2010 parameterization
ID GENERAL-CIRCULATION MODEL; LATENT-HEAT RELEASE; ATMOSPHERE; PLASMA;
MIDDLE; TIDES
AB The parameterizations of monoenergetic particle impact ionization in Fang et al. (2010) (Fang2010) and Fang et al. (2013) (Fang2013) are applied to the complex energy spectra measured by DMSP F16 satellite to calculate the ionization rates from electron and ion precipitations for a Northern Hemisphere pass from 0030 UT to 0106 UT on 6 August 2011. Clear enhancement of electron flux is found in the polar cap. The mean electron energy in the polar cap is mostly above 100eV, while the mean energy in the auroral zone is typically above 1keV. At the same time, F16 captures a strong Poynting flux enhancement in the polar cap, which is comparable to those in the auroral zone. The particle impact ionization rates using Fang2010 and Fang2013 parameterizations show clear enhancement at F region altitudes mainly due to the low-energy precipitating electrons, peaking probably in the cusp but also showing enhanced levels throughout most of the polar cap region. The general circulation models (GCMs), National Center for Atmospheric Research Thermosphere-Ionosphere-Electrodynamics General Circulation Model, and Global Ionosphere-Thermosphere Model, using their default empirical formulations of particle impact ionization, do not capture the observed features shown in the total particle ionization rate applying the Fang2010 and Fang2013 parameterizations to DMSP measurements. The difference between GCM simulations and Fang2010 and Fang2013 applied to DMSP data is due to the difference of both the inputs to the models and the parameterization of the ionization rates.
C1 [Huang, Yanshi] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA.
[Huang, Yanshi] Configurable Space Microsyst Innovat & Applicat C, Albuquerque, NM USA.
[Huang, Cheryl Y.; Su, Yi-Jiun] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM USA.
[Deng, Yue] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA.
[Fang, Xiaohua] Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80309 USA.
RP Huang, YS (reprint author), Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA.
EM yanshi.huang84@gmail.com
RI Fang, Xiaohua/C-2773-2008
OI Fang, Xiaohua/0000-0002-6584-2837
FU Air Force Office of Scientific Research Laboratory [LRIR12RV10COR]; NASA
[NNX09AI04G, NNX13AD64G]; NSF [ATM0955629]; AFOSR [1210429];
[FA9453-13-1-0228]
FX The authors wish to thank Daniel Ober for permission to use the DMSP
particle data and Daniel Weimer for access to the Weimer05 model. This
research was supported by FA9453-13-1-0228 and by Air Force Office of
Scientific Research Laboratory Task LRIR12RV10COR. The work at Colorado
was supported by NASA grant NNX09AI04G. The research at the University
of Texas was supported by NSF through grant ATM0955629, NASA through
grant NNX13AD64G, and by AFOSR through award 1210429.
NR 31
TC 7
Z9 7
U1 0
U2 12
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD APR
PY 2014
VL 119
IS 4
BP 3106
EP 3116
DI 10.1002/2013JA019671
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AH6CP
UT WOS:000336218600050
ER
PT J
AU Kwon, H
Yoder, J
Baek, S
Gruber, S
Pack, D
AF Kwon, Hyukseong
Yoder, Josiah
Baek, Stanley
Gruber, Scott
Pack, Daniel
TI Maximizing Water Surface Target Localization Accuracy Under Sunlight
Reflection with an Autonomous Unmanned Aerial Vehicle
SO JOURNAL OF INTELLIGENT & ROBOTIC SYSTEMS
LA English
DT Article
DE Unmanned aerial vehicle; Unmanned aircraft systems; Target position
uncertainty; Surface target tracking; Sunlight reflection avoidance;
Path planning
AB Reflected sunlight can significantly impact the effectiveness of vision-based object detection and tracking algorithms, especially ones developed for an aerial platform operating over a marine environment. These algorithms often fail to detect water surface objects due to sunlight glitter or rapid course corrections of unmanned aerial vehicles (UAVs) generated by the laws of aerodynamics. In this paper, we propose a UAV path planning method that maximizes the stationary or mobile target detection likelihood during localization and tracking by minimizing the sunlight reflection influences. In order to better reduce sunlight reflection effects, an image-based sunlight reflection reception adjustment is also proposed. We validate our method using both stationary and mobile target tracking tests.
C1 [Kwon, Hyukseong; Yoder, Josiah; Baek, Stanley; Gruber, Scott] US Air Force Acad, Colorado Springs, CO 80840 USA.
[Pack, Daniel] Univ Texas San Antonio, Dept Elect & Comp Engn, San Antonio, TX 78249 USA.
RP Kwon, H (reprint author), US Air Force Acad, Colorado Springs, CO 80840 USA.
EM hyukseong.kwon@usafa.edu; josiah.yoder.ctr@usafa.edu;
stanley.baek@usafa.edu; scott.gruber@usafa.edu; daniel.pack@utsa.edu
NR 17
TC 1
Z9 1
U1 0
U2 6
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0921-0296
EI 1573-0409
J9 J INTELL ROBOT SYST
JI J. Intell. Robot. Syst.
PD APR
PY 2014
VL 74
IS 1-2
SI SI
BP 395
EP 411
DI 10.1007/s10846-013-9944-1
PG 17
WC Computer Science, Artificial Intelligence; Robotics
SC Computer Science; Robotics
GA AH9GH
UT WOS:000336449400026
ER
PT J
AU Antoniou, N
Rykaczewski, K
Uchic, MD
AF Antoniou, Nicholas
Rykaczewski, Konrad
Uchic, Michael D.
TI In situ FIB-SEM characterization and manipulation methods
SO MRS BULLETIN
LA English
DT Article
DE ion-beam processing; Scanning electron microscopy (SEM); ion-beam
assisted deposition
ID FOCUSED-ION-BEAM; TRANSMISSION ELECTRON-MICROSCOPY; CRYOELECTRON
TOMOGRAPHY; SINGLE-CRYSTALS; CELLS; ULTRAMICROTOMY; SPECIMENS; SURFACES;
LIQUID; SCALE
AB This article reviews recent developments and applications of two beam systems (focused ion beam [FIB] and scanning electron microscope [SEM]) for in situ characterization and manipulation of material at the micro- and nanoscale. In these applications, the sample may be manipulated, ion milled, mechanically or electrically excited, and its temperature varied from above room temperature to cryogenic levels. FIB-SEM instruments offer new opportunities for in situ characterization by enabling localized exposure of surface layers within the high vacuum microscope chamber environment (especially in conjunction with cryogenic cooling of the bulk sample), through experiments that require either highly accurate material removal or localized material addition through beam-induced gas deposition, and by using micro- and nano-manipulation technologies for probing or positioning. This article describes the current state of the art of this experimental methodology and provides case studies in the areas of cryogenic, electrical, and mechanical characterization.
C1 [Antoniou, Nicholas] Harvard Univ, Ctr Nanoscale Syst, Cambridge, MA 02138 USA.
[Rykaczewski, Konrad] Arizona State Univ, Sch Engn Matter Transport & Energy, Phoenix, AZ USA.
[Uchic, Michael D.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH USA.
RP Antoniou, N (reprint author), Harvard Univ, Ctr Nanoscale Syst, Cambridge, MA 02138 USA.
EM Nicholas@cns.fas.harvard.edu; konradr@asu.edu; michael.uchic@us.af.mil
FU Ira A. Fulton Schools of Engineering at Arizona State University;
Materials & Manufacturing Directorate of the Air Force Research
Laboratory; Center for Nanoscale Systems (CNS), a member of the National
Nanotechnology Infrastructure Network (NNIN); NSF [ECS-0335765]
FX K.R. acknowledges funding from the Ira A. Fulton Schools of Engineering
at Arizona State University. M.D.U. acknowledges support from the
Materials & Manufacturing Directorate of the Air Force Research
Laboratory. N.A. acknowledges funding from the Center for Nanoscale
Systems (CNS), a member of the National Nanotechnology Infrastructure
Network (NNIN), which is supported by the NSF (under Award No.
ECS-0335765). CNS is part of Harvard University.
NR 62
TC 4
Z9 5
U1 1
U2 31
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0883-7694
EI 1938-1425
J9 MRS BULL
JI MRS Bull.
PD APR
PY 2014
VL 39
IS 4
BP 347
EP 352
DI 10.1557/mrs.2014.58
PG 6
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA AE6LS
UT WOS:000334105100014
ER
PT J
AU Delgado, R
York, A
Lee, C
Crawford, C
Buckenmaier, C
Schoomaker, E
Crawford, P
AF Delgado, Roxana
York, Alexandra
Lee, Courtney
Crawford, Cindy
Buckenmaier, Chester, III
Schoomaker, Eric
Crawford, Paul
CA Active Self-Care Therapies Pain
TI Assessing the Quality, Efficacy, and Effectiveness of the Current
Evidence Base of Active Self-Care Complementary and Integrative Medicine
Therapies for the Management of Chronic Pain: A Rapid Evidence
Assessment of the Literature
SO PAIN MEDICINE
LA English
DT Review
DE Self-Care; Complementary and Integrative Medicine; Chronic Pain; Rapid
Evidence Assessment of the Literature; Systematic Review
ID RANDOMIZED CONTROLLED-TRIAL; ALEXANDER TECHNIQUE LESSONS; RECURRENT
BACK-PAIN; ALTERNATIVE MEDICINE; MASSAGE ATEAM; SYMPTOMS; PERCEPTIONS;
MILITARY; EXERCISE; HEALTH
AB ObjectivesChronic pain management typically consists of prescription medications or provider-based, behavioral, or interventional procedures that are often ineffective, may be costly, and can be associated with undesirable side effects. Because chronic pain affects the whole person (body, mind, and spirit), patient-centered complementary and integrative medicine (CIM) therapies that acknowledge the patients' roles in their own healing processes have the potential to provide more efficient and comprehensive chronic pain management. Active self-care CIM (ACT-CIM) therapies allow for a more diverse, patient-centered treatment of complex symptoms, promote self-management, and are relatively safe and cost-effective. To date, there are no systematic reviews examining the full range of ACT-CIM used for chronic pain symptom management.
MethodsA systematic review was conducted, using Samueli Institute's Rapid Evidence Assessment of the Literature methodology, to rigorously assess both the quality of the research on ACT-CIM modalities and the evidence for their efficacy and effectiveness in treating chronic pain symptoms. A working group of subject matter experts was also convened to evaluate the overall literature pool and develop recommendations for the use and implementation of these modalities.
ResultsFollowing key database searches, 146 randomized controlled trials were included in the review.
ConclusionsThis article provides an introduction and background to the review, summarizes the methodological processes involved, details the initial results, and identifies strengths and weakness of the review. Specific results of the review as well as overall recommendations for moving this field of research forward are detailed throughout the current PainMedicine supplement.
C1 [Delgado, Roxana; York, Alexandra; Lee, Courtney; Crawford, Cindy] Samueli Inst, Alexandria, VA 22314 USA.
[Buckenmaier, Chester, III] Def & Vet Ctr Integrat Pain Management, Rockville, MD USA.
[Buckenmaier, Chester, III; Schoomaker, Eric; Crawford, Paul] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
[Crawford, Paul] Nellis Family Med Residency, Nellis AFB, NV USA.
RP Lee, C (reprint author), Samueli Inst, 1737 King St,Suite 600, Alexandria, VA 22314 USA.
EM clee@SamueliInstitute.org
FU US Army Medical Research and Materiel Command [W81XWH-08-1-0615,
W81XWH-10-1-0938]
FX The authors report no conflicts of interest. The authors have not
presented this data and information before in any journal or
presentation and have no professional relationships with companies or
manufacturers who will benefit from the results of this present study.
This material is based upon work supported by the US Army Medical
Research and Materiel Command under Award Nos. W81XWH-08-1-0615 and
W81XWH-10-1-0938. Any opinions, findings, and conclusions or
recommendations expressed in this material are those of the authors and
should not be construed as an official Department of Defense, Department
of the Army, or Uniformed Services University of the Health Sciences
position, policy, or decision unless so designated by other
documentation.
NR 55
TC 9
Z9 10
U1 1
U2 13
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1526-2375
EI 1526-4637
J9 PAIN MED
JI Pain Med.
PD APR
PY 2014
VL 15
SU 1
SI SI
BP S9
EP S20
DI 10.1111/pme.12412
PG 12
WC Medicine, General & Internal
SC General & Internal Medicine
GA AF0YZ
UT WOS:000334442600004
PM 24734865
ER
PT J
AU Schmucker, AL
Dickerson, MB
Rycenga, M
Mangelson, BF
Brown, KA
Naik, RR
Mirkin, CA
AF Schmucker, Abrin L.
Dickerson, Matthew B.
Rycenga, Matthew
Mangelson, Bryan F.
Brown, Keith A.
Naik, Rajesh R.
Mirkin, Chad A.
TI Combined Chemical and Physical Encoding with Silk Fibroin-Embedded
Nanostructures
SO SMALL
LA English
DT Article
DE nanodisk codes; surface-enhanced Raman spectroscopy; nanoencoding; tags;
electrospinning
ID ENHANCED RAMAN-SCATTERING; ON-WIRE LITHOGRAPHY; BOMBYX-MORI SILK;
NANODISK CODES; SURFACE; SILVER; NANOPARTICLE; PARTICLES; GOLD; GAPS
C1 [Schmucker, Abrin L.; Rycenga, Matthew; Mangelson, Bryan F.; Brown, Keith A.; Mirkin, Chad A.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Schmucker, Abrin L.; Rycenga, Matthew; Mangelson, Bryan F.; Brown, Keith A.; Mirkin, Chad A.] Northwestern Univ, Int Inst Nanotechnol, Evanston, IL 60208 USA.
[Dickerson, Matthew B.; Naik, Rajesh R.] US Air Force, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Mirkin, CA (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM chadnano@northwestern.edu
RI Brown, Keith/A-9780-2010; Schmucker, Abrin/A-7426-2010; Mirkin,
Chad/E-3911-2010
OI Brown, Keith/0000-0002-2379-2018;
FU AFOSR [FA9550-09-1-0294]; Office of the Asst. Secr. of Defense for
Research and Engineering, DoD/NSSEFF Program/Naval Postgraduate School
[N00244-09-1-0012, N00244-09-1-0071]; AFRL Bio-X STT; Northwestern
University's International Institute for Nanotechnology
FX This material is based upon work supported by the AFOSR under Award No.
FA9550-09-1-0294. This material is based upon work supported by the
Office of the Asst. Secr. of Defense for Research and Engineering,
DoD/NSSEFF Program/Naval Postgraduate School under Award Nos.
N00244-09-1-0012 and N00244-09-1-0071. AFRL Bio-X STT is acknowledged
for financial support. K. A. B. gratefully acknowledges support from
Northwestern University's International Institute for Nanotechnology.
Any opinions, findings, and conclusions or recommendations expressed in
this publication are those of the author(s) and do not necessarily
reflect the views of the sponsors. Electron microscopy was performed at
the EPIC facility of the NU Atomic and Nanoscale Characterization
Experimental Center (NUANCE) Center at Northwestern University.
NR 23
TC 1
Z9 1
U1 3
U2 53
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1613-6810
EI 1613-6829
J9 SMALL
JI Small
PD APR
PY 2014
VL 10
IS 8
BP 1485
EP 1489
DI 10.1002/smll.201302923
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA AE8VH
UT WOS:000334280500006
PM 24376130
ER
PT J
AU Blankson, KL
Roberts, TA
AF Blankson, Kwabena L.
Roberts, Timothy A.
TI Military Health Care Utilization by Teens and Young Adults
SO PEDIATRICS
LA English
DT Article
DE adolescent health; health service utilization; young adults; preventive
health care visits; Affordable Care Act
ID PEDIATRIC RESIDENCY PROGRAMS; UNITED-STATES; VISIT PATTERNS; MEDICINE;
ADOLESCENTS; TRENDS; VACCINES; SERVICES
AB OBJECTIVES:Adolescents and young adults are frequently uninsured (9.0% and 26.4%). Under the Affordable Care Act, the impact of insuring this population on health care utilization is unclear. We examined insurance records from >3.5 million non-pregnancy-related primary care visits in the Military Health System to describe health care utilization patterns among 467099 non-active duty patients, aged 12 to 22, with access to free health care.METHODS:We described association of age and gender with primary care utilization rates, clinic type, and primary and secondary diagnoses.RESULTS:Adolescents and young adults were seen for 2.63 primary care visits per year. Use of Pediatric Clinics declined with age (51.6% to 1.8%) and increased for Family Medicine (45.5% to 91.1%). The top 3 diagnostic groups in our study were health maintenance (18.3%), health evaluation (17.3%), and respiratory/ear, nose, and throat (15.1%). Age-by-gender interactions had a significant association with health care utilization rates and diagnoses at primary care appointments. For example, the percent of all appointments accounted for by musculoskeletal injuries increased significantly (P < .001) with age for males (10.6%, 12-14 years; 12.8%, 15-18 years; 15.2%, 19-22 years) and decreased for females (10.3%, 9.2%, 7.5%).CONCLUSIONS:Unlike previous studies of adolescents and young adults, we show that this population, especially female young adults, does use health care when it is available and largely free. Extrapolating from our Military Health System data, we expect implementation of the Affordable Care Act will result in an increased demand for health care, particularly in the areas of reproductive health care, respiratory/ear, nose, and throat issues, and routine health maintenance.
C1 [Blankson, Kwabena L.] US Air Force, Naval Med Ctr Portsmouth Joint Base Langley Eusti, Suffolk, VA USA.
[Roberts, Timothy A.] US Navy, Naval Med Ctr, San Diego, CA 92152 USA.
RP Blankson, KL (reprint author), 3314 Rivers Bend Pl, Suffolk, VA 23435 USA.
EM kwabena.blankson@med.navy.mil
NR 27
TC 3
Z9 3
U1 1
U2 2
PU AMER ACAD PEDIATRICS
PI ELK GROVE VILLAGE
PA 141 NORTH-WEST POINT BLVD,, ELK GROVE VILLAGE, IL 60007-1098 USA
SN 0031-4005
EI 1098-4275
J9 PEDIATRICS
JI Pediatrics
PD APR
PY 2014
VL 133
IS 4
BP 627
EP 634
DI 10.1542/peds.2013-1630
PG 8
WC Pediatrics
SC Pediatrics
GA AG3TU
UT WOS:000335343500009
PM 24639269
ER
PT J
AU Taha, HE
Hajj, MR
Beran, PS
AF Taha, Haithem E.
Hajj, Muhammad R.
Beran, Philip S.
TI State-space representation of the unsteady aerodynamics of flapping
flight
SO AEROSPACE SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Flapping flight; Leading Edge Vortex; Aspect ratio effects; Unsteady
aerodynamics; lndicial response; Duhamel's principle
ID HOVERING INSECT FLIGHT; POWER REQUIREMENTS; AIRFOIL BEHAVIOR; MODEL
HAWKMOTH; WING ROTATION; LIFT; KINEMATICS; DYNAMICS; VORTEX
AB A state-space formulation for the aerodynamics of flapping flight is presented. The Duhamel's principle, applied in linear unsteady flows, is extended to non-conventional lift curves to capture the LEV contribution. The aspect ratio effects on the empirical formulae used to predict the static lift due to a stabilized Leading Edge Vortex (LEV) are provided. The unsteady lift due to arbitrary wing motion is generated using the static lift curve. Then, state-space representation for the unsteady lift is derived. The proposed model is validated through a comparison with direct numerical simulations of Navier-Stokes on hovering insects. A comparison with quasi-steady models that capture the LEV contribution is also performed to assess the role of unsteadiness. Similarly, a comparison with classical unsteady approaches is presented to assess the LEV dominance. Finally, a reduced-order model that is more suitable for flight dynamics and control analyses is derived from the full model. (c) 2014 Elsevier Masson SAS. All rights reserved.
C1 [Taha, Haithem E.; Hajj, Muhammad R.] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA.
[Beran, Philip S.] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
EM hezzat@vt.edu; mhajj@vt.edu; philip.beran@wpafb.af.mil
NR 61
TC 21
Z9 21
U1 0
U2 9
PU ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
PI PARIS
PA 23 RUE LINOIS, 75724 PARIS, FRANCE
SN 1270-9638
EI 1626-3219
J9 AEROSP SCI TECHNOL
JI Aerosp. Sci. Technol.
PD APR
PY 2014
VL 34
BP 1
EP 11
DI 10.1016/j.ast.2014.01.011
PG 11
WC Engineering, Aerospace
SC Engineering
GA AG2XN
UT WOS:000335280500001
ER
PT J
AU Veksler, VD
Myers, CW
Gluck, KA
AF Veksler, Vladislav D.
Myers, Christopher W.
Gluck, Kevin A.
TI SAwSu: An Integrated Model of Associative and Reinforcement Learning
SO COGNITIVE SCIENCE
LA English
DT Article
DE Associative learning; Cognitive modeling; Cognitive system; Decision
making; Integrated models; Learning; Reinforcement learning
ID SKILL ACQUISITION; TASK; MEMORY; SOAR
AB Successfully explaining and replicating the complexity and generality of human and animal learning will require the integration of a variety of learning mechanisms. Here, we introduce a computational model which integrates associative learning (AL) and reinforcement learning (RL). We contrast the integrated model with standalone AL and RL models in three simulation studies. First, a synthetic grid-navigation task is employed to highlight performance advantages for the integrated model in an environment where the reward structure is both diverse and dynamic. The second and third simulations contrast the performances of the three models in behavioral experiments, demonstrating advantages for the integrated model in accounting for behavioral data.
C1 [Veksler, Vladislav D.; Myers, Christopher W.; Gluck, Kevin A.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Veksler, VD (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
EM vdv718@gmail.com
NR 44
TC 3
Z9 3
U1 1
U2 5
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0364-0213
EI 1551-6709
J9 COGNITIVE SCI
JI Cogn. Sci.
PD APR
PY 2014
VL 38
IS 3
BP 580
EP 598
DI 10.1111/cogs.12103
PG 19
WC Psychology, Experimental
SC Psychology
GA AE9UL
UT WOS:000334356000007
PM 24460979
ER
PT J
AU Thompson, EA
Anderson, TR
AF Thompson, Elizabeth A.
Anderson, Timothy R.
TI A CUDA implementation of the Continuous Space Language Model
SO JOURNAL OF SUPERCOMPUTING
LA English
DT Article
DE CUDA; CSLM; GPU; Statistical signal processing; CUBLAS; Math Kernel
Library; BLAS; High performance computing
ID GRAPHICS PROCESSORS; MATHEMATICAL-THEORY; COMMUNICATION
AB The training phase of the Continuous Space Language Model (CSLM) was implemented in the NVIDIA hardware/software architecture Compute Unified Device Architecture (CUDA). A detailed explanation of the CSLM algorithm is provided. Implementation was accomplished using a combination of CUBLAS library routines, NVIDIA NPP functions, and CUDA kernel calls on three different CUDA enabled devices of varying compute capability and a time savings over the traditional CPU approach demonstrated. The efficiency of the CUDA version of the open source implementation is analyzed and compared to that using the Intel Math Kernel Libraries (MKL) on a variety of CUDA enabled and multi-core CPU platforms. It is demonstrated that substantial performance benefit can be obtained using CUDA, even with nonoptimal code. Techniques for optimizing performance are then provided. Furthermore, an analysis is performed to determine the conditions in which the performance of CUDA exceeds that of the multi-core MKL realization.
C1 [Thompson, Elizabeth A.] Purdue Univ Ft Wayne, Ft Wayne, IN 46805 USA.
[Anderson, Timothy R.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Thompson, EA (reprint author), Purdue Univ Ft Wayne, 2101 E Coliseum Blvd, Ft Wayne, IN 46805 USA.
EM thompson@engr.ipfw.edu; Timothy.Anderson@wpafb.af.mil
NR 27
TC 1
Z9 2
U1 0
U2 2
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0920-8542
EI 1573-0484
J9 J SUPERCOMPUT
JI J. Supercomput.
PD APR
PY 2014
VL 68
IS 1
BP 65
EP 86
DI 10.1007/s11227-013-1023-7
PG 22
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA AF2XY
UT WOS:000334577000003
ER
PT J
AU Rickles, AS
Kostrzebski, M
Farkas, R
Choi, DX
Wang, X
Skinner, K
AF Rickles, Aaron S.
Kostrzebski, Melissa
Farkas, Rachel
Choi, Daniel X.
Wang, Xi
Skinner, Kristin
TI Metaplastic Breast Cancer: Mastectomy Offers Greater Recurrence-Free
Survival
SO ANNALS OF SURGICAL ONCOLOGY
LA English
DT Meeting Abstract
CT 15th Annual Meeting of the American-Society-of-Breast-Surgeons
CY APR 30-MAY 04, 2014
CL Las Vegas, NV
SP Amer Soc Breast Surg
C1 [Rickles, Aaron S.; Kostrzebski, Melissa; Farkas, Rachel; Wang, Xi; Skinner, Kristin] Univ Rochester, Rochester, NY USA.
[Choi, Daniel X.] USAF, Tavis AFB, CA USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1068-9265
EI 1534-4681
J9 ANN SURG ONCOL
JI Ann. Surg. Oncol.
PD APR
PY 2014
VL 21
SU 2
BP 101
EP 102
PG 2
WC Oncology; Surgery
SC Oncology; Surgery
GA AE7XC
UT WOS:000334211800125
ER
PT J
AU Vu, TM
Won, SH
Ombrello, T
Cha, MS
AF Tran Manh Vu
Won, Sang Hee
Ombrello, Timothy
Cha, Mm Suk
TI Stability enhancement of ozone-assisted laminar premixed Bunsen flames
in nitrogen co-flow
SO COMBUSTION AND FLAME
LA English
DT Article
DE Ozone; Blowoff velocity; Plasma assisted combustion; Dielectric barrier
discharge
ID DIELECTRIC-BARRIER DISCHARGE; JET DIFFUSION FLAMES; ELECTRIC-FIELDS;
COMBUSTION ENHANCEMENT; NONEQUILIBRIUM PLASMA; TRIBRACHIAL FLAMES;
PROPAGATION SPEED; SUPERSONIC-FLOW; COFLOW JETS; AIR-FLOWS
AB Ozone (O-3) is known as one of the strongest oxidizers and therefore is widely used in many applications. Typically in the combustion field, a combination of non-thermal plasma and combustion systems have been studied focusing on the effects of ozone on flame propagation speeds and ignition characteristics. Here, we experimentally investigated the effects of ozone on blowoff of premixed methane/air and propane/air flames over a full range of equivalence ratios at room temperature and atmospheric pressure by using a co-flow burner and a dielectric barrier discharge. The results with ozone showed that a nozzle exit jet velocity at the moment of flame blowoff (blowoff velocity) significantly increased, and flammability limits for both fuel-lean and rich mixtures were also extended. Ozone had stronger effects of percent enhancement in the blowoff velocity for off-stoichiometric mixtures, while minimum enhancements could be observed around stoichiometric conditions for both fuels showing linear positive dependence on a tested range of ozone concentration up to 3810 ppm. Through chemical kinetic simulations, the experimentally observed trends of the enhancement in blowoff velocity were identified as a result of the modification of the laminar burning velocity. Two ozone decomposition pathways of O-3 + N-2 -> O + O-2 + N-2 and O-3 + H -> O-2 + OH were identified as the most controlling steps. These reactions, coupled with fuel consumption characteristics of each fuel determined the degree of promotion in laminar burning velocities, supporting experimental observations on blowoff velocities with ozone addition. (C) 2013 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
C1 [Tran Manh Vu; Cha, Mm Suk] KAUST, Clean Combust Res Ctr, Thuwal 239556900, Saudi Arabia.
[Won, Sang Hee] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
[Ombrello, Timothy] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
RP Cha, MS (reprint author), 4700 KAUST, Thuwal 239556900, Saudi Arabia.
EM min.cha@kaust.edu.sa
RI Cha, Min Suk/C-6020-2013; Won, Sang Hee/B-4839-2012
OI Cha, Min Suk/0000-0003-4059-3421;
FU KAUST AEA project
FX This work was partially supported by the KAUST AEA project.
NR 49
TC 8
Z9 8
U1 0
U2 18
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
EI 1556-2921
J9 COMBUST FLAME
JI Combust. Flame
PD APR
PY 2014
VL 161
IS 4
BP 917
EP 926
DI 10.1016/j.combustflame.2013.09.023
PG 10
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA AE6IC
UT WOS:000334092800006
ER
PT J
AU Loughnane, G
Groeber, M
Uchic, M
Shah, M
Srinivasan, R
Grandhi, R
AF Loughnane, Gregory
Groeber, Michael
Uchic, Michael
Shah, Megna
Srinivasan, Raghu
Grandhi, Ramana
TI Modeling the effect of voxel resolution on the accuracy of phantom grain
ensemble statistics
SO MATERIALS CHARACTERIZATION
LA English
DT Article
DE 3D characterization; Microstructure; Morphology; Grain size
distribution; Serial sectioning
ID POLYCRYSTALLINE MICRO STRUCTURES; SERIAL SECTIONING ANALYSIS;
AUTOMATED-ANALYSIS; SIMULATION; FRAMEWORK
AB The spatial resolution of experimental three dimensional (3D) mesoscale microstructural data has typically been prescribed using simple rules. For example, serial section experiments often attempt to collect at least ten sections through the average feature, however, this rudimentary guidance likely results in data under- or oversampling depending on the measurement(s)-of-interest. This study investigates one approach for determining a minimally sufficient resolution for 3D microstructural data using computer-generated phantoms of polycrystalline grain microstructures. These phantom microstructures were generated on a voxel grid with high resolution and used as reference volumes, which were then progressively down-sampled to coarser resolutions. Discrete probability density functions (PDFs) of morphological descriptors were constructed from both the reference and down-sampled volumes, and the similarity between the PDFs was quantified using a modified version of the Bhattacharyya Coefficient. Analysis of the data revealed that the grain size and the number of nearest neighbor grains have distributions relatively insensitive to changes in resolution, whereas shape parameters including ellipsoid aspect ratios (b/a and c/a) and the moment invariant Omega 3, have higher sensitivities. (c) 2014 Elsevier Inc. All rights reserved.
C1 [Loughnane, Gregory; Srinivasan, Raghu; Grandhi, Ramana] Wright State Univ, Dept Mech & Mat Engn, Dayton, OH 45435 USA.
[Groeber, Michael; Uchic, Michael; Shah, Megna] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Shah, Megna] UES Inc, Dayton, OH 45432 USA.
RP Loughnane, G (reprint author), Wright State Univ, Dept Mech & Mat Engn, Russ Engn Ctr 212, 3640 Colonel Glenn Highway, Dayton, OH 45435 USA.
EM Loughnane.2@wright.edu; michael.groeber@wpafb.af.mil;
michael.uchic@wpafb.af.mil; megna.shah.ctr@wpafb.af.mil;
raghavan.srinivasan@wright.edu; ramana.grandhi@wright.edu
FU Materials and Manufacturing Directorate of the Air Force Research
Laboratory (AFRL/RX); Dayton Area Graduate Studies Institute (DAGSI); US
Air Force [FA8650-10-D-5226]
FX The authors acknowledge the support from the Materials and Manufacturing
Directorate of the Air Force Research Laboratory (AFRL/RX) and the
Dayton Area Graduate Studies Institute (DAGSI). This work was also
funded in part by the US Air Force Contract No. FA8650-10-D-5226.
NR 24
TC 2
Z9 2
U1 2
U2 3
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1044-5803
EI 1873-4189
J9 MATER CHARACT
JI Mater. Charact.
PD APR
PY 2014
VL 90
BP 136
EP 150
DI 10.1016/j.matchar.2014.01.029
PG 15
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Materials Science, Characterization & Testing
SC Materials Science; Metallurgy & Metallurgical Engineering
GA AE6XT
UT WOS:000334142000016
ER
PT J
AU Wu, JZ
Shi, JJ
Baca, JF
Emergo, R
Haugan, TJ
Maiorov, B
Holesinger, T
AF Wu, Judy Z.
Shi, Jack J.
Baca, Javier F.
Emergo, Rose
Haugan, Timothy J.
Maiorov, Boris
Holesinger, Terry
TI The effect of lattice strain on the diameter of BaZrO3 nanorods in
epitaxial YBa2Cu3O7-delta films
SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 11th European Conference on Applied Superconductivity (EUCAS)
CY SEP 15-19, 2013
CL Genoa, ITALY
DE YBCO film; nanostructure; lattice strain; pinning; nanocomposites
ID THIN-FILMS
AB An elastic strain model has been applied in an effort to understand the effect of the lattice strain on the diameter of the BaZrO3 (BZO) nanorods self-assembled into aligned arrays along the c-axis in BZO-doped epitaxial YBa2Cu3O7-delta (YBCO) thin films. The calculated elastic energy of the strained BZO/YBCO composite lattice suggests that the diameter of the nanorods is approximately independent of the doping concentration of BZO as long as the density of the nanorods is sufficiently large. An experimental confirmation was carried out using transmission electron microscopy on YBCO thin films with BZO doping varying from 2% to 6% volume concentration. The diameter of the BZO nanorods was indeed found to be approximately constant in the range of 5.2-5.9 nm. The increase of the doping concentration therefore simply leads to an increase of the nanorod density, which links directly to the matching field of the effective pinning and is consistent with the transport J(c) results measured for these samples.
C1 [Wu, Judy Z.; Shi, Jack J.; Baca, Javier F.; Emergo, Rose] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA.
[Haugan, Timothy J.] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Maiorov, Boris; Holesinger, Terry] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Shi, JJ (reprint author), Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA.
EM jshi@ku.edu
OI Maiorov, Boris/0000-0003-1885-0436
NR 20
TC 13
Z9 13
U1 3
U2 27
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-2048
EI 1361-6668
J9 SUPERCOND SCI TECH
JI Supercond. Sci. Technol.
PD APR
PY 2014
VL 27
IS 4
AR 044010
DI 10.1088/0953-2048/27/4/044010
PG 7
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA AF0WT
UT WOS:000334435900013
ER
PT J
AU LeMaster, DA
Hirakawa, K
AF LeMaster, Daniel A.
Hirakawa, Keigo
TI Improved microgrid arrangement for integrated imaging polarimeters
SO OPTICS LETTERS
LA English
DT Article
AB For almost 20 years, microgrid polarimetric imaging systems have been built using a 2 x 2 repeating pattern of polarization analyzers. In this Letter, we show that superior spatial resolution is achieved over this 2 x 2 case when the analyzers are arranged in a 2 x 4 repeating pattern. This unconventional result, in which a more distributed sampling pattern results in finer spatial resolution, is also achieved without affecting the conditioning of the polarimetric data-reduction matrix. Proof is provided theoretically and through Stokes image reconstruction of synthesized data. (C) 2014 Optical Society of America
C1 [LeMaster, Daniel A.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Hirakawa, Keigo] Univ Dayton, Dayton, OH 45469 USA.
RP LeMaster, DA (reprint author), Air Force Res Lab, 2241 Avion Circle, Wright Patterson AFB, OH 45433 USA.
EM daniel.lemaster@us.af.mil; khirakawa1@udayton.edu
NR 8
TC 11
Z9 11
U1 0
U2 11
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
EI 1539-4794
J9 OPT LETT
JI Opt. Lett.
PD APR 1
PY 2014
VL 39
IS 7
BP 1811
EP 1814
DI 10.1364/OL.39.001811
PG 4
WC Optics
SC Optics
GA AE3PG
UT WOS:000333887800027
PM 24686611
ER
PT J
AU Smith, JE
Griffin, DK
Leny, JK
Hagen, JA
Chavez, JL
Kelley-Loughnane, N
AF Smith, Joshua E.
Griffin, Daniel K.
Leny, Juliann K.
Hagen, Joshua A.
Chavez, Jorge L.
Kelley-Loughnane, Nancy
TI Colorimetric detection with aptamer-gold nanoparticle conjugates coupled
to an android-based color analysis application for use in the field
SO TALANTA
LA English
DT Article
DE Biosensors; Nanoparticles/nanotechnology; Optical sensors; Nucleic
acids; Aptamers; Colorimetric app
ID COCAINE; DNA; BIOLOGY; LENGTH
AB The feasibility of using aptamer-gold nanoparticle conjugates (Apt-AuNPs) to design colorimetric assays for in the field detection of small molecules was investigated. An assay to detect cocaine was designed using two clones of a known cocaine-binding aptamer. The assay was based on the AuNPs difference in affinity for single-stranded DNA (non-binding) and double stranded DNA (target bound). In the first assay, a commonly used design was followed, in which the aptamer and target were incubated to allow binding followed by exposure to the AuNPs. Interactions between the non-bound analytes and the AuNPs surface resulted in a number of false positives. The assay was redesigned by incubating the AuNPs and the aptamer prior to target addition to passivate the AuNPs surface. The adsorbed aptamer was able to bind the target while preventing non-specific interactions. The assay was validated with a number of masking and cutting agents and other controlled substances showing minimal false positives. Studies to improve the assay performance in the field were performed, showing that assay activity could be preserved for up to 2 months. To facilitate the assay analysis, an android application for automatic colorimetric characterization was developed. The application was validated by challenging the assay with cocaine standards of different concentrations, and comparing the results to a conventional plate reader, showing outstanding agreement. Finally, the rapid identification of cocaine in mixtures mimicking street samples was demonstrated. This work established that Apt-AuNPs can be used to design robust assays to be used in the field. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Smith, Joshua E.; Leny, Juliann K.; Hagen, Joshua A.; Chavez, Jorge L.; Kelley-Loughnane, Nancy] US Air Force, Res Lab, Human Effectiveness Directorate, Wright Patterson AFB, OH 45433 USA.
[Griffin, Daniel K.] Univ Cincinnati, Coll Engn & Appl Sci, Sch Elect & Comp Syst, Cincinnati, OH 45221 USA.
RP Chavez, JL (reprint author), US Air Force, Res Lab, Human Effectiveness Directorate, 711th Human Performance Wing, Wright Patterson AFB, OH 45433 USA.
EM jorge.chavez.ctr.per@us.af.mil; nancy.kelley-loughnane.1@us.af.mil
FU Air Force Office of Scientific Research; Assistant Secretary of Defense
for Research and Engineering (Defense Biometrics and Forensics Office);
National Research Council Research Associateship Award at Air Force
Research Laboratory
FX This work was partially funded by the Air Force Office of Scientific
Research and the Assistant Secretary of Defense for Research and
Engineering (Defense Biometrics and Forensics Office). JES participation
was supported by a National Research Council Research Associateship
Award at Air Force Research Laboratory. The authors thank Ms. Elizabeth
Maurer for her assistance with TEM imaging.
NR 23
TC 23
Z9 23
U1 5
U2 96
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-9140
EI 1873-3573
J9 TALANTA
JI Talanta
PD APR
PY 2014
VL 121
BP 247
EP 255
DI 10.1016/j.talanta.2013.12.062
PG 9
WC Chemistry, Analytical
SC Chemistry
GA AE2GO
UT WOS:000333791500034
PM 24607135
ER
PT J
AU Snyder, MJ
Bepko, J
White, M
AF Snyder, Matthew J.
Bepko, Jennifer
White, Merima
TI Acute Pericarditis: Diagnosis and Management
SO AMERICAN FAMILY PHYSICIAN
LA English
DT Article
ID ASSOCIATION TASK-FORCE; CARDIAC TROPONIN-I; DIFFERENTIAL-DIAGNOSIS;
ETIOLOGIC DIAGNOSIS; PRACTICE GUIDELINES; DISEASES; THERAPY; HEART;
COLCHICINE; ISSUES
AB Acute pericarditis, inflammation of the pericardium, is found in approximately 5% of patients admitted to the emergency department for chest pain unrelated to acute myocardial infarction. It occurs most often in men 20 to 50 years of age. Acute pericarditis has a number of potential etiologies including infection, acute myocardial infarction, medication use, trauma to the thoracic cavity, and systemic diseases, such as rheumatoid arthritis. However, most etiologic evaluations are inconclusive. Patients with acute pericarditis commonly present with acute, sharp, retrosternal chest pain that is relieved by sitting or leaning forward. A pericardial friction rub is found in up to 85% of patients. Classic electrocardiographic changes include widespread concave upward ST-segment elevation without reciprocal T-wave inversions or Q waves. First-line treatment includes nonsteroidal anti-inflammatory drugs and colchicine. Glucocorticoids are traditionally reserved for severe or refractory cases, or in cases when the cause of pericarditis is likely connective tissue disease, autoreactivity, or uremia. Cardiology consultation is recommended for patients with severe disease, those with pericarditis refractory to empiric treatment, and those with unclear etiologies. Copyright (C) 2014 American Academy of Family Physicians.
C1 [Snyder, Matthew J.; White, Merima] Nellis Family Med Residency Program, Nellis AFB, NV USA.
[Bepko, Jennifer] Family Med Residency Program, David Grant Med Ctr, Traifis AFB, CA USA.
RP Snyder, MJ (reprint author), Nellis Family Med Residency, 4700 N Vegas Blvd, Nellis AFB, NV 89191 USA.
EM mdrnsnyder@gmail.com
NR 24
TC 3
Z9 3
U1 0
U2 4
PU AMER ACAD FAMILY PHYSICIANS
PI KANSAS CITY
PA 8880 WARD PARKWAY, KANSAS CITY, MO 64114-2797 USA
SN 0002-838X
EI 1532-0650
J9 AM FAM PHYSICIAN
JI Am. Fam. Physician
PD APR 1
PY 2014
VL 89
IS 7
BP 553
EP 560
PG 8
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA AE1IH
UT WOS:000333722500008
PM 24695601
ER
PT J
AU Carter, BW
Lichtenberger, JP
Wu, CC
AF Carter, Brett W.
Lichtenberger, John P., III
Wu, Carol C.
TI Congenital Abnormalities of the Pulmonary Arteries in Adults
SO AMERICAN JOURNAL OF ROENTGENOLOGY
LA English
DT Editorial Material
DE congenital; CT; MDCT; pulmonary arteries
ID IDIOPATHIC DILATATION; PROXIMAL INTERRUPTION; AGENESIS; STENOSIS;
DISEASE
C1 [Carter, Brett W.] Univ Texas Houston, MD Anderson Canc Ctr, Dept Diagnost Radiol, Houston, TX 77030 USA.
[Lichtenberger, John P., III] Travis AFB, David Grant Med Ctr, Dept Radiol, Fairfield, CA USA.
[Wu, Carol C.] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Dept Radiol, Boston, MA USA.
RP Carter, BW (reprint author), Univ Texas Houston, MD Anderson Canc Ctr, Dept Diagnost Radiol, 1515 Holcombe Blvd, Houston, TX 77030 USA.
EM bcarter2@mdanderson.org
NR 22
TC 1
Z9 1
U1 0
U2 1
PU AMER ROENTGEN RAY SOC
PI RESTON
PA 1891 PRESTON WHITE DR, SUBSCRIPTION FULFILLMENT, RESTON, VA 22091 USA
SN 0361-803X
EI 1546-3141
J9 AM J ROENTGENOL
JI Am. J. Roentgenol.
PD APR
PY 2014
VL 202
IS 4
BP W308
EP W313
DI 10.2214/AJR.13.11759
PG 6
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA AD7OU
UT WOS:000333454300001
PM 24660728
ER
PT J
AU Weyburne, DW
AF Weyburne, David W.
TI New thickness and shape parameters for the boundary layer velocity
profile
SO EXPERIMENTAL THERMAL AND FLUID SCIENCE
LA English
DT Article
DE Boundary layer; Boundary layer thickness; Boundary layer shape;
Laminar-turbulent transition; Probability density function
ID REYNOLDS-NUMBER
AB A new method for describing the shape and thickness of 2-D wall bounded boundary layer velocity profile is presented. The new method is based on calculating parameters using simple integrals of the velocity profile. In fact the basic integral kernel is that of the displacement thickness. It is shown that these new parameters can be used to describe both the inner and outer region of the turbulent boundary layer, as well as laminar and transitional velocity profiles. Applied to experimental laminar-turbulent profiles, it is shown that one of the new shape parameters foretells the beginning of the laminar-turbulent transition on a flat plate at a much lower Reynolds number than the traditional H-12 criteria. Furthermore, using another new parameter, it is shown that the transition to fully turbulent flow may proceed as a discontinuous event. Published by Elsevier Inc.
C1 US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Weyburne, DW (reprint author), US Air Force, Res Lab, 2241 Avion Circle, Wright Patterson AFB, OH 45433 USA.
EM David.Weyburne@us.af.mil
FU Air Force Research Laboratory
FX The author would like to acknowledge the support of the Air Force
Research Laboratory. In addition, the author would like to thank the
various experimentalists for making their datasets available for
inclusion in this manuscript.
NR 14
TC 0
Z9 0
U1 1
U2 6
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0894-1777
EI 1879-2286
J9 EXP THERM FLUID SCI
JI Exp. Therm. Fluid Sci.
PD APR
PY 2014
VL 54
BP 22
EP 28
DI 10.1016/j.expthermflusci.2014.01.008
PG 7
WC Thermodynamics; Engineering, Mechanical; Physics, Fluids & Plasmas
SC Thermodynamics; Engineering; Physics
GA AE2EC
UT WOS:000333785100003
ER
PT J
AU Beck, JA
Brown, JM
Cross, CJ
Slater, JC
Lamont, GB
AF Beck, Joseph A.
Brown, Jeffrey M.
Cross, Charles J.
Slater, Joseph C.
Lamont, Gary B.
TI Framework for Creating Digital Representations of Structural Components
Using Computational Intelligence Techniques
SO AIAA JOURNAL
LA English
DT Article
ID GENETIC ALGORITHM; OPTIMIZATION; IDENTIFICATION; VARIABILITY; DYNAMICS;
MODELS
AB A framework for creating a digital representation of physical structural components is investigated. A model updating scheme used with an artificial neural network to map updating parameters to the error observed between simulated experimental data and an analytical model of a turbine-engine fan blade. The simulated experimental airfoil has as-manufactured geometric deviations from the nominal, design-intent geometry on which the analytical model is based. The manufacturing geometric deviations are reduced through principal component analysis, where the scores of the principal components are the unknown updating parameters. A range of acceptable scores is used to devise a design of computer experiments that provides training and testing data for the neural network. This training data is composed of principal component scores as inputs. The outputs are the calculated errors between the analytical and experimental predictions of modal properties and frequency-response functions. Minimizing these errors will result in an updated analytical model that has predictions closer to the simulated experimental data. This minimization process is done through the use of two multiobjective evolutionary algorithms. The goal is to determine if the updating process can identify the principal components used in simulating the experiment data.
C1 [Beck, Joseph A.; Brown, Jeffrey M.] US Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
[Cross, Charles J.] US Air Force Res Lab, Aerosp Syst Directorate, Engine Integr Branch, Wright Patterson AFB, OH 45433 USA.
[Slater, Joseph C.] Wright State Univ, Coll Engn & Comp Sci, Dayton, OH 45435 USA.
[Lamont, Gary B.] US Air Force Inst Technol, Dept Elect & Comp Engn, Wright Patterson AFB, OH 45433 USA.
RP Beck, JA (reprint author), US Air Force Res Lab, Aerosp Syst Directorate, 1950 5th St, Wright Patterson AFB, OH 45433 USA.
OI Slater, Joseph/0000-0002-1923-9279
NR 27
TC 2
Z9 2
U1 0
U2 8
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
EI 1533-385X
J9 AIAA J
JI AIAA J.
PD APR
PY 2014
VL 52
IS 4
BP 855
EP 866
DI 10.2514/1.J052565
PG 12
WC Engineering, Aerospace
SC Engineering
GA AD0YI
UT WOS:000332960100017
ER
PT J
AU Liu, J
Durstock, M
Dai, LM
AF Liu, Jun
Durstock, Michael
Dai, Liming
TI Graphene oxide derivatives as hole- and electron-extraction layers for
high-performance polymer solar cells
SO ENERGY & ENVIRONMENTAL SCIENCE
LA English
DT Review
ID ORGANIC PHOTOVOLTAIC CELLS; POWER CONVERSION EFFICIENCY; TRANSPORT
LAYER; ENERGY-CONVERSION; BUFFER LAYER; CARBON; INTERFACE; COMPOSITE;
ANODE; FUNCTIONALIZATION
AB Owing to their solution processability, unique two-dimensional structure, and functionalization-induced tunable electronic structures, graphene oxide (GO) and its derivatives have been used as a new class of efficient hole- and electron-extraction materials in polymer solar cells (PSCs). Highly efficient and stable PSCs have been fabricated with GO and its derivatives as hole- and/or electron-extraction layers. In this review, we summarize recent progress in this emerging research field. We also present some rational concepts for the design and development of the GO-based hole- or electron-extraction layers for high-performance PSCs, along with challenges and perspectives.
C1 [Liu, Jun] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China.
[Durstock, Michael] RXBP, Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Dai, Liming] Case Western Reserve Univ, Dept Macromol Sci & Engn, Ctr Adv Sci & Engn Carbon Case4Carbon, Cleveland, OH 44106 USA.
RP Liu, J (reprint author), Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, 5625 Renmin St, Changchun 130022, Peoples R China.
EM liujun@ciac.ac.cn; liming.dai@case.edu
FU AFOSR [FA9550-12-1-0069]; Nature Science Foundation of China [51373165];
973 project [2014CB643504]; "Youth Thousand Talents Program" of China
FX LD is grateful for the financial support from AFOSR (FA9550-12-1-0069).
JL thanks the financial support by the Nature Science Foundation of
China (no. 51373165), the 973 project (no. 2014CB643504), "Youth
Thousand Talents Program" of China.
NR 68
TC 79
Z9 80
U1 24
U2 239
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 1754-5692
EI 1754-5706
J9 ENERG ENVIRON SCI
JI Energy Environ. Sci.
PD APR
PY 2014
VL 7
IS 4
BP 1297
EP 1306
DI 10.1039/c3ee42963f
PG 10
WC Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical;
Environmental Sciences
SC Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology
GA AD4GI
UT WOS:000333205800005
ER
PT J
AU Andrew, DL
Clark, PN
Hoeppner, DW
AF Andrew, D. L.
Clark, P. N.
Hoeppner, D. W.
TI Investigation of cold expansion of short edge margin holes with
pre-existing cracks in 2024-T351 aluminium alloy
SO FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
LA English
DT Article
DE precracked hole; cold expansion; fatigue crack growth; residual stress;
edge margin; cold work
ID FASTENER HOLES; FATIGUE
AB The United States Air Force has requirements to inspect and cold expand potentially thousands of fastener holes for an aircraft fleet, and the presence of existing cracks at those fastener holes is expected. Fatigue experiments were performed to investigate the resulting fatigue crack growth life of a fastener hole that contained a representative 'unknown' crack at the time of inspection (approximately 0.050 in. in length) at a short edge margin hole that was then cold expanded and compare that to a non-cold expanded hole and a cold expanded hole with no pre-existing cracks. The United States Air Force analytical approach used to account for the benefit due to cold expansion was compared to the experimental data and does not consistently provide conservative predictions.
C1 [Andrew, D. L.; Clark, P. N.] A10 Aircraft Struct Integr Program, Hill AFB, UT 84056 USA.
[Clark, P. N.; Hoeppner, D. W.] Univ Utah, Dept Mech Engn, Salt Lake City, UT 84112 USA.
RP Andrew, DL (reprint author), A10 Aircraft Struct Integr Program, Hill AFB, UT 84056 USA.
EM dallen.andrew@gmail.com
NR 29
TC 2
Z9 2
U1 2
U2 6
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 8756-758X
EI 1460-2695
J9 FATIGUE FRACT ENG M
JI Fatigue Fract. Eng. Mater. Struct.
PD APR
PY 2014
VL 37
IS 4
BP 406
EP 416
DI 10.1111/ffe.12123
PG 11
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA AD1VO
UT WOS:000333022000006
ER
PT J
AU Wang, L
Ren, SP
Korel, B
Kwiat, KA
Salerno, E
AF Wang, Li
Ren, Shangping
Korel, Bogdan
Kwiat, Kevin A.
Salerno, Eric
TI Improving System Reliability Against Rational Attacks Under Given
Resources
SO IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
LA English
DT Article
DE Attacker-defender problem; resource allocation; system reliability;
voting strategy
ID HOMOGENEOUS PARALLEL SYSTEMS; VS. REDUNDANCY; SERIES; PROTECTION;
DEFENSE
AB System reliability has always been a challenging issue for many systems. In order to achieve high reliability, redundancy and voting schemes are often used to tolerate unintentional component failures. For unintentional failures caused by, for instance, normal wear-outs, hardware failures, or software bugs, etc., adding more redundancies often improves a system's reliability. However, when attack-caused failures exist, the number of redundant components and the number of participating voting entities may not be positively proportional to system reliability. In this paper, we study system reliability and system defense strategies when the system is under rational attacks. In particular, we analyze how defense and attack strategies may impact system reliability when both the defender and attacker are given a fixed amount of resources that can only be used for adding camouflaging components or enhancing existing components' cyber protection by defenders, or selecting a subset of components to attack by attackers, respectively. We also present an algorithm to decide the optimal defense strategy in fighting against rational attacks.
C1 [Wang, Li; Ren, Shangping; Korel, Bogdan] IIT, Dept Comp Sci, Chicago, IL 60616 USA.
[Kwiat, Kevin A.] US Air Force, Res Lab, Cyber Sci Branch, Griffiss AFB, NY 13441 USA.
[Salerno, Eric] SUNY Buffalo, Dept Mech & Aerosp Engn, Buffalo, NY 14260 USA.
RP Wang, L (reprint author), IIT, Dept Comp Sci, Chicago, IL 60616 USA.
EM lwang64@iit.edu; ren@iit.edu; korel@iit.edu; kwiatk@rl.af.mil;
esalerno@buffalo.edu
FU NSF CAREER Award [CNS0746643]; Air Force Office of Scientific Research
(AFOSR)
FX This work was supported in part by the NSF CAREER Award under Grant
CNS0746643 and the Air Force Office of Scientific Research (AFOSR).
Approved for Public Release, Distribution Unlimited: 88ABW-2012-4239,
Aug. 3, 2012. This paper was recommended by Associate Editor W. Pedrycz.
NR 31
TC 5
Z9 5
U1 0
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 2168-2216
J9 IEEE T SYST MAN CY-S
JI IEEE Trans. Syst. Man Cybern. -Syst.
PD APR
PY 2014
VL 44
IS 4
BP 446
EP 456
DI 10.1109/TSMC.2013.2263126
PG 11
WC Automation & Control Systems; Computer Science, Cybernetics
SC Automation & Control Systems; Computer Science
GA AD3DM
UT WOS:000333118300005
ER
PT J
AU Browning, RS
Dinan, RJ
Davidson, JS
AF Browning, Robert S.
Dinan, Robert J.
Davidson, James S.
TI Blast Resistance of Fully Grouted Reinforced Concrete Masonry Veneer
Walls
SO JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES
LA English
DT Article; Proceedings Paper
CT 10th International Conference on Shock and Impact Loads on Structures
CY NOV 25-26, 2013
CL undefined, SINGAPORE
DE Load factors; Explosions; Blasting; Structural dynamics; Full-scale
tests; Masonry; Veneers; Walls; Extreme loading; Explosion; Blast;
Structural dynamics; Experimental; Full-scale testing; Reinforced
masonry; Multi-wythe walls; Cavity walls; Veneer walls
ID FOAM CLADDINGS; ALLEVIATION; IMPACT; LOADS
AB This paper describes the full-scale experimental evaluation of the out-of-plane flexural response of fully grouted RC masonry walls subjected to uniform static pressure and to dynamic pressure resulting from an explosion. The investigation was performed as part of a larger effort to improve the design methodologies for reinforced masonry subjected to blast loading. The masonry walls were non-load-bearing and vertically spanning, which represents a significant amount of common construction in the United States. Both single-wythe and veneer wall sections were evaluated. Two types of concrete masonry units were used, i.e., conventional and A-block concrete masonry units. The results of the program provide a better understanding of the ultimate dynamic capacities and ductility of reinforced masonry wallsboth single-wythe and veneer wallswhich will ultimately help engineers produce designs that are safer and more economical.
C1 [Browning, Robert S.] US Army Engn Res & Dev Ctr, Geotech & Struct Lab, Struct Mech Branch, CEERD GS M, Vicksburg, MS 39180 USA.
[Dinan, Robert J.] US Air Force Civil Engn Ctr, Tyndall AFB, FL 32403 USA.
[Dinan, Robert J.] Air Force Civil Engn Support Agcy, Tyndall AFB, FL 32403 USA.
[Davidson, James S.] Auburn Univ, Dept Civil Engn, Auburn, AL 36849 USA.
RP Browning, RS (reprint author), US Army Engn Res & Dev Ctr, Geotech & Struct Lab, Struct Mech Branch, CEERD GS M, 3909 Halls Ferry Rd,Bldg 5008, Vicksburg, MS 39180 USA.
EM robert.s.browning@usace.army.mil; jim.davidson@auburn.edu
FU Airbase Technologies Division of the Air Force Research Laboratory
(AFRL) at Tyndall Air Force Base, Florida; NCMA Education and Research
Foundation Grant
FX The experimental components of this project were sponsored by the
Airbase Technologies Division of the Air Force Research Laboratory
(AFRL) at Tyndall Air Force Base, Florida. The AFRL program manager
during the experimental phase of this work was Dr. Robert Dinan.
Experimental samples were provided through a Cooperative Research and
Development Agreement (CRADA) with the Portland Cement Association
(CRADA No. 05-119-ML-01). Dennis Graber from the National Concrete
Masonry Association (NCMA) and Greg Borchelt from the Brick Industry
Association assisted throughout the planning and execution of this
program. Fig. 1 was provided by NCMA. The static experiments were
conducted at the National Center of Explosive Research and Design,
located at the University of Missouri-Columbia, under the supervision of
Dr. Hani Salim and Aaron Saucier. Masonry material tests were conducted
by NCMA. Employees of Applied Research Associates, Inc. contributed to
the execution of the experimental program. Auburn University researchers
in the Department of Civil Engineering, under the guidance of Dr. James
Davidson, provided pre-test support of the experimental program, as well
as post-test analysis of the experimental data, which was partially
sponsored through an NCMA Education and Research Foundation Grant. While
completing this paper, Robert Browning has been employed by the
Geotechnical and Structures Laboratory (GSL) at the U. S. Army Engineer
Research and Development Center in Vicksburg, Mississippi. Robert
Browning is grateful for GSL's support in pursuing his Ph.D. and for the
Director's approval to publish this paper.
NR 57
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U2 8
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 0887-3828
EI 1943-5509
J9 J PERFORM CONSTR FAC
JI J. Perform. Constr. Facil.
PD APR 1
PY 2014
VL 28
IS 2
BP 228
EP 241
DI 10.1061/(ASCE)CF.1943-5509.0000434
PG 14
WC Construction & Building Technology; Engineering, Civil
SC Construction & Building Technology; Engineering
GA AC8FW
UT WOS:000332769900004
ER
PT J
AU Abadi, PPSS
Maschmann, MR
Mortuza, SM
Banerjee, S
Baur, JW
Graham, S
Cola, BA
AF Abadi, Parisa Pour Shahid Saeed
Maschmann, Matthew R.
Mortuza, S. M.
Banerjee, Soumik
Baur, Jeffery W.
Graham, Samuel
Cola, Baratunde A.
TI Reversible tailoring of mechanical properties of carbon nanotube forests
by immersing in solvents
SO CARBON
LA English
DT Article
ID VAN-DER-WAALS; IN-SITU; ARRAYS; FILMS; TURF; BRUSHES; BUNDLES; ENERGY
AB The mechanical behavior of carbon nanotube (CNT) forests soaked in three solvents - toluene, acetonitrile, and isopropanol - is examined. Effective stiffness of the structure is evaluated in the dry and wet condition by micro-indentation using a 100 pm flat punch. With soaking of CNT forests in solvents, the stiffness decreases and deformation mechanism changes from buckling concentrated close to the bottom of the CNT forest to a distribution of local buckles along the height and global buckling of the entire length of CNTs. We use molecular dynamics simulations to relate the experimental observations to the reduced mechanical support from neighbor CNTs due to a decreased magnitude of van der Waals (vdW) interactions in the presence of solvents. Toluene, which produces the lowest average measured stiffness between the three solvents, produces the lowest vdW forces between individual CNTs. Furthermore, wet-dry cycling of CNT forests shows the reversibility and repeatability of change of stiffness by immersing in solvents. The results show that soaking CNT forests in solvents could be useful for applications such as interface materials where lower stiffness of CNT forests are needed and applications such as energy absorbing materials in which re-setting of stiffness is required. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Abadi, Parisa Pour Shahid Saeed; Graham, Samuel; Cola, Baratunde A.] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
[Maschmann, Matthew R.; Baur, Jeffery W.] Air Force Res Lab, Mat & Mfg Directorate, AFRL RX, Wright Patterson AFB, OH 45433 USA.
[Maschmann, Matthew R.] Universal Technol Corp, Beavercreek, OH 45432 USA.
[Mortuza, S. M.; Banerjee, Soumik] Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.
[Graham, Samuel; Cola, Baratunde A.] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
RP Cola, BA (reprint author), Georgia Inst Technol, George W Woodruff Sch Mech Engn, 771 Ferst Dr, Atlanta, GA 30332 USA.
EM cola@gatech.edu
RI Banerjee, Soumik/D-1290-2010; Mortuza, S.M./K-1286-2012;
OI Mortuza, S.M./0000-0003-3432-1497; Maschmann,
Matthew/0000-0002-0740-6228
FU U.S. Air Force Summer Faculty Fellowship Program; DARPA; Space and Naval
Warfare (SPAWAR) Systems Center, Pacific [N66001-09-C-2013]
FX The authors thank Denzell Bolling, visiting undergraduate student from
Howard University, for his assistance with experiments. B.A.C. is
grateful for support from the U.S. Air Force Summer Faculty Fellowship
Program. This work was partially supported by DARPA and the Space and
Naval Warfare (SPAWAR) Systems Center, Pacific under Contract No.
N66001-09-C-2013. The views expressed are those of the authors and do
not reflect the official policy or position of the Department of Defense
or the U.S. Government.
NR 50
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U1 0
U2 29
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0008-6223
EI 1873-3891
J9 CARBON
JI Carbon
PD APR
PY 2014
VL 69
BP 178
EP 187
DI 10.1016/j.carbon.2013.12.004
PG 10
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA AB6RT
UT WOS:000331917900019
ER
PT J
AU Gerzeski, RH
Sprague, A
Hu, JJ
Fisher, TS
AF Gerzeski, Roger H.
Sprague, Aaron
Hu, Jianjun
Fisher, Timothy S.
TI Growth of contiguous graphite fins from thermally conductive graphite
fibers
SO CARBON
LA English
DT Article
ID CARBON-FIBERS; CONTACT; COMPOSITES; ADHESION; FRICTION; SURFACES
AB Contiguous graphite fins can be grown with Microwave Plasma CVD from the surface of different types of thermally conductive (TC), graphite fibers. The fins grow from all fiber filaments in multiple same TC graphite fiber tow bundles. Fin morphology consists of contiguous branching graphene basal planes originating from the fiber's surface and curling outwards regardless of the fiber's isotropic fine crystals, onion, radial, or "Pan Am" internal morphology. A general range of conditions to grow fins of a desired length is reported. Published by Elsevier Ltd.
C1 [Gerzeski, Roger H.] Air Force Res Lab, Thermal Sci & Mat Branch AFRL RXBT, Wright Patterson AFB, OH 45433 USA.
[Sprague, Aaron; Hu, Jianjun] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Fisher, Timothy S.] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA.
RP Gerzeski, RH (reprint author), Air Force Res Lab, Thermal Sci & Mat Branch AFRL RXBT, 2941 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM Roger.Gerzeski@us.af.mil
RI Fisher, Timothy/D-8517-2011
OI Fisher, Timothy/0000-0002-8909-313X
NR 37
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U1 1
U2 31
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0008-6223
EI 1873-3891
J9 CARBON
JI Carbon
PD APR
PY 2014
VL 69
BP 424
EP 436
DI 10.1016/j.carbon.2013.12.045
PG 13
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA AB6RT
UT WOS:000331917900045
ER
PT J
AU Davenport, E
Palileo, EV
Gore, S
AF Davenport, Eddie
Palileo, Edwin V.
Gore, Steven
TI HEROS WITH HEART DISEASE: WHY UNITED STATES AIR FORCE AVIATORS GET AND
SURVIVE CORONARY ARTERY DISEASE AND MAY CONTINUE TO FLY
SO JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
LA English
DT Meeting Abstract
C1 US Air Force Sch Aerosp Med, Wright Patterson AFB, OH USA.
US Air Force, Wright Patterson AFB, OH USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0735-1097
EI 1558-3597
J9 J AM COLL CARDIOL
JI J. Am. Coll. Cardiol.
PD APR 1
PY 2014
VL 63
IS 12
SU S
MA 1272-357
BP A1666
EP A1666
PG 1
WC Cardiac & Cardiovascular Systems
SC Cardiovascular System & Cardiology
GA CP0QC
UT WOS:000359579102424
ER
PT J
AU Li, MY
Liu, J
Li, J
Kim, BU
AF Li, Mingyang
Liu, Jian
Li, Jing
Kim, Byoung Uk
TI Bayesian modeling of multi-state hierarchical systems with multi-level
information aggregation
SO RELIABILITY ENGINEERING & SYSTEM SAFETY
LA English
DT Article
DE System reliability; Multiple failure states; Hierarchical structure;
Bayesian networks; Prior elicitation
ID COMMON-CAUSE FAILURES; RELIABILITY-ANALYSIS; BINOMIAL SUBSYSTEMS;
NETWORKS; COMPONENTS
AB Reliability modeling of multi-state hierarchical systems is challenging because of the complex system structures and imbalanced reliability information available at different system levels. This paper proposes a Bayesian multi-level information aggregation approach to model the reliability of multi-level hierarchical systems by utilizing all available reliability information throughout the system. Cascading failure dependency among components and/or sub-systems at the same level is explicitly considered. The proposed methodology can significantly improve the accuracy of system-level reliability modeling. A case study demonstrates the effectiveness of the proposed methodology. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Li, Mingyang; Liu, Jian] Univ Arizona, Dept Syst & Ind Engn, Tucson, AZ 85721 USA.
[Li, Jing] Arizona State Univ, Sch Comp Informat & Decis Syst Engn, Tempe, AZ 85287 USA.
[Kim, Byoung Uk] Air Force Res Lab, Autonomous Control Branch, Wright Patterson AFB, OH 45433 USA.
RP Liu, J (reprint author), Univ Arizona, Dept Syst & Ind Engn, Tucson, AZ 85721 USA.
EM jianliu@email.arizona.edu
FU NSF [CMMI-1100949, CMMI-1069246, CMMI-1149602]
FX The authors gratefully acknowledge the financial support from the NSF
Grants (CMMI-1100949, CMMI-1069246 and CMMI-1149602).
NR 27
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U1 4
U2 25
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0951-8320
EI 1879-0836
J9 RELIAB ENG SYST SAFE
JI Reliab. Eng. Syst. Saf.
PD APR
PY 2014
VL 124
BP 158
EP 164
DI 10.1016/j.ress.2013.12.001
PG 7
WC Engineering, Industrial; Operations Research & Management Science
SC Engineering; Operations Research & Management Science
GA AB3II
UT WOS:000331684100013
ER
PT J
AU Borkar, T
Hwang, J
Hwang, JY
Scharf, TW
Tiley, J
Hong, SH
Banerjee, R
AF Borkar, Tushar
Hwang, Jaewon
Hwang, Jun Yeon
Scharf, Thomas W.
Tiley, Jaimie
Hong, Soon Hyung
Banerjee, Rajarshi
TI Strength versus ductility in carbon nanotube reinforced nickel matrix
nanocomposites
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
DE sintering; composite; stress; strain relationship
ID MECHANICAL-PROPERTIES; ALUMINUM COMPOSITES; THERMAL-PROPERTIES;
HARDNESS; INTERFACE; GRAPHITE; GRAPHENE; COPPER
AB Two types of carbon nanotube reinforced nickel (CNT/Ni) nanocomposites were processed, both involving spark plasma sintering (SPS) of precursor powders consisting of nickel and carbon nanotubes. The first type involved simple mechanical dry milling of nickel and CNT powders, followed by sintering using SPS, resulting in nanocomposites exhibiting a tensile yield strength of 350 MPa (about two times that of SPS processed monolithic nickel with a strength of 160 MPa) and about 30% elongation to failure. In contrast, the nanocomposites processed by SPS of powders prepared by molecular-level mixing (MLM) exhibited substantially higher tensile yield strength of 690 MPa but limited ductility with an 8% elongation to failure. While the former type of processing involving dry-milling is expected to be lower in cost as well as easy to scale-up, the latter type of processing technique involving MLM leads to a more homogeneous distribution of nanotubes, leading to extraordinarily high strength levels.
C1 [Borkar, Tushar; Scharf, Thomas W.; Banerjee, Rajarshi] Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76203 USA.
[Hwang, Jaewon; Hong, Soon Hyung] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea.
[Hwang, Jun Yeon] Korea Inst Sci & Technol, Inst Adv Composite Mat, Jeonbuk 565905, South Korea.
[Tiley, Jaimie] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Banerjee, R (reprint author), Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76203 USA.
EM shhong@kaist.ac.kr; Rajarshi.Banerjee@unt.edu
RI Hong, Soon Hyung/C-1943-2011
FU AOARD [FA2386-11-1-4008]; U.S. Air Force Research Laboratory (AFRL ISES)
[FA8650-08-C-5226]; "Center for Nanostructured Materials Technology"
under "21st Century Frontier R&D Programs" of the Ministry of Education,
Science and Technology in Korea [2010K000275]; Korea Institute of
Science and Technology (KIST) Institutional Program in the Republic of
Korea
FX This work was financially supported by a grant (code No.
FA2386-11-1-4008) from AOARD and partially supported by U.S. Air Force
Research Laboratory (AFRL ISES Contract No. FA8650-08-C-5226) and a
grant (code No. 2010K000275) from "Center for Nanostructured Materials
Technology" under "21st Century Frontier R&D Programs" of the Ministry
of Education, Science and Technology in Korea. The authors also
gratefully acknowledge the Center for Advanced Research and Technology
(CART) at the University of North Texas. The Korea Institute of Science
and Technology (KIST) Institutional Program in the Republic of Korea has
also provided partial support for this work.
NR 40
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U1 0
U2 17
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
EI 2044-5326
J9 J MATER RES
JI J. Mater. Res.
PD MAR 28
PY 2014
VL 29
IS 6
BP 761
EP 769
DI 10.1557/jmr.2014.53
PG 9
WC Materials Science, Multidisciplinary
SC Materials Science
GA AD9ZO
UT WOS:000333623400004
ER
PT J
AU Brant, AT
Golden, EM
Giles, NC
Yang, S
Sarker, MAR
Watauchi, S
Nagao, M
Tanaka, I
Tryk, DA
Manivannan, A
Halliburton, LE
AF Brant, A. T.
Golden, E. M.
Giles, N. C.
Yang, Shan
Sarker, M. A. R.
Watauchi, S.
Nagao, M.
Tanaka, I.
Tryk, D. A.
Manivannan, A.
Halliburton, L. E.
TI Triplet ground state of the neutral oxygen-vacancy donor in rutile TiO2
SO PHYSICAL REVIEW B
LA English
DT Article
ID ANATASE; DEFECTS; FERROMAGNETISM; POLYMORPHS; BEHAVIOR; SURFACE; FILMS
AB Electron paramagnetic resonance (EPR) is used to investigate the triplet (S = 1) ground state of the neutral oxygen vacancy in bulk rutile TiO2 crystals. This shallow donor consists of an oxygen vacancy with two nearest-neighbor, exchange-coupled Ti3+ ions located along the [001] direction and equidistant from the vacancy. The spins of the two trapped electrons, one at each Ti3+ ion, align parallel to give the S = 1 state. These neutral oxygen vacancies are formed near 25 K in as-grown oxidized TiO2 crystals by illuminating with sub-band-gap 442 nm laser light. The angular dependence of the EPR spectra provides the principal values and axes for the g and D matrices. Observations of the Ti-47 and Ti-49 hyperfine lines when the magnetic field is along high-symmetry directions show that the two Ti3+ ions are equivalent; i.e., they have equal hyperfine A matrices. The A matrix for each Ti3+ ion in the neutral S = 1 oxygen vacancy is approximately half of the A matrix reported earlier for the one Ti3+ ion in the singly ionized S = 1/2 oxygen vacancy [Brant et al., J. Appl. Phys. 114, 113702 (2013)]. The neutral oxygen vacancies are thermally unstable above 25 K. They release an electron to the conduction band with an activation energy near 63 meV and convert to singly ionized S = 1/2 oxygen vacancies. When undoped TiO2 is sufficiently oxygen deficient (i.e., reduced), this combination of conduction band electrons and singly ionized oxygen vacancies may result in carrier-mediated ferromagnetism at room temperature.
C1 [Brant, A. T.; Golden, E. M.; Giles, N. C.] US Air Force, Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
[Yang, Shan; Halliburton, L. E.] W Virginia Univ, Dept Phys, Morgantown, WV 26505 USA.
[Sarker, M. A. R.; Watauchi, S.; Nagao, M.; Tanaka, I.] Univ Yamanashi, Ctr Crystal Sci & Technol, Kofu, Yamanashi 4008511, Japan.
[Tryk, D. A.] Univ Yamanashi, Fuel Cell Nanomat Ctr, Kofu, Yamanashi 4000021, Japan.
[Manivannan, A.] Natl Energy Technol Lab, Morgantown, WV 26507 USA.
RP Giles, NC (reprint author), US Air Force, Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
EM nancy.giles@afit.edu
RI Tryk, Donald/D-5931-2012
OI Tryk, Donald/0000-0003-4660-9674
FU National Research Council
FX A.T.B. was supported by a Postdoctoral Research Associateship Award from
the National Research Council. The views expressed in this paper are
those of the authors and do not necessarily reflect the official policy
or position of the US Air Force, the US Department of Defense, or the US
government.
NR 61
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U1 7
U2 72
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD MAR 28
PY 2014
VL 89
IS 11
AR 115206
DI 10.1103/PhysRevB.89.115206
PG 10
WC Physics, Condensed Matter
SC Physics
GA AD8ZQ
UT WOS:000333554600002
ER
PT J
AU Macdonald, JR
Beecher, SJ
Lancaster, A
Berry, PA
Schepler, KL
Mirov, SB
Kar, AK
AF Macdonald, John R.
Beecher, Stephen J.
Lancaster, Adam
Berry, Patrick A.
Schepler, Kenneth L.
Mirov, Sergey B.
Kar, Ajoy K.
TI Compact Cr:ZnS channel waveguide laser operating at 2333 nm
SO OPTICS EXPRESS
LA English
DT Article
ID FEMTOSECOND LASER; ZINC CHALCOGENIDES; HIGH-POWER; CR2+-ZNSE; EFFICIENT;
DIFFUSION
AB A compact mid-infrared channel waveguide laser is demonstrated in Cr:ZnS with a view to power scaling chromium laser technology utilizing the thermo-mechanical advantages of Cr: ZnS over alternative transition metal doped II-VI semiconductor laser materials. The laser provided a maximum power of 101 mW of CW output at 2333 nm limited only by the available pump power. A maximum slope efficiency of 20% was demonstrated. (C)2014 Optical Society of America
C1 [Macdonald, John R.; Lancaster, Adam; Kar, Ajoy K.] Heriot Watt Univ, Inst Photon & Quantum Sci, Edinburgh EH14 4AS, Midlothian, Scotland.
[Beecher, Stephen J.] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England.
[Berry, Patrick A.; Schepler, Kenneth L.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
[Mirov, Sergey B.] Univ Alabama Birmingham, Dept Phys, Birmingham, AL 35294 USA.
RP Macdonald, JR (reprint author), Heriot Watt Univ, Inst Photon & Quantum Sci, Edinburgh EH14 4AS, Midlothian, Scotland.
EM J.R.Macdonald@hw.ac.uk
OI Berry, Patrick/0000-0003-1294-6509; Schepler,
Kenneth/0000-0001-9658-2305
FU European Office of Aerospace Research and Development (EOARD)
[FA8655-11-1-3001]; Engineering and Physical Sciences Research Council
(EPSRC) [EP/G030227/1]; EPSRC studentship [EP/K502844/1]
FX This work was supported by the European Office of Aerospace Research and
Development (EOARD) grant number FA8655-11-1-3001 and the Engineering
and Physical Sciences Research Council (EPSRC) grant number
EP/G030227/1. AL acknowledges support from EPSRC studentship
EP/K502844/1.
NR 24
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U1 1
U2 31
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD MAR 24
PY 2014
VL 22
IS 6
BP 7052
EP 7057
DI 10.1364/OE.22.007052
PG 6
WC Optics
SC Optics
GA AD9IT
UT WOS:000333579300085
PM 24664054
ER
PT J
AU Lester, LF
Naderi, NA
Grillot, F
Raghunathan, R
Kovanis, V
AF Lester, Luke F.
Naderi, Nader A.
Grillot, Frederic
Raghunathan, Ravi
Kovanis, Vassilios
TI Strong optical injection and the differential gain in a quantum dash
laser
SO OPTICS EXPRESS
LA English
DT Article
ID LINEWIDTH ENHANCEMENT FACTOR; SEMICONDUCTOR-LASER; DOT LASER; MICROWAVE
GENERATION; WELL LASERS; PERFORMANCE; THRESHOLD; BEHAVIOR; STATES
AB By optically injecting a quantum dash laser and simultaneously producing a significant lowering of the device threshold, a large enhancement in the differential gain is realized. This effect is observed by way of a dramatic reduction in the linewidth enhancement factor and a large increase in the 3-dB modulation bandwidth, especially as the injection wavelength is blue-shifted. Compared to its free-running value, a 50X improvement in the laser's differential gain is found. (C)2014 Optical Society of America
C1 [Lester, Luke F.; Raghunathan, Ravi; Kovanis, Vassilios] Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA.
[Naderi, Nader A.] US Air Force Res Lab, Kirtland AFB, NM 87117 USA.
[Grillot, Frederic] Telecom Paristech, CNRS LTCI, Ecole Natl Super Telecommun, F-75634 Paris 13, France.
RP Lester, LF (reprint author), Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA.
EM lflester@vt.edu
RI Grillot, Frederic/N-5613-2014
FU United States Air Force Research Laboratory [FA8750-06-1-0085,
FA9550-10-1-0276]; AFOSR Electromagnetics Portfolio of Dr. Arje Nachman
FX This work was supported by the United States Air Force Research
Laboratory under grant numbers FA8750-06-1-0085 and FA9550-10-1-0276
managed by Dr. Gernot Pomrenke. Vassilios Kovanis' work was supported
via the AFOSR Electromagnetics Portfolio of Dr. Arje Nachman.
NR 28
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U1 0
U2 7
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD MAR 24
PY 2014
VL 22
IS 6
BP 7222
EP 7228
DI 10.1364/OE.22.007222
PG 7
WC Optics
SC Optics
GA AD9IT
UT WOS:000333579300101
PM 24664070
ER
PT J
AU Joyce, DM
Venkat, N
Ouchen, F
Singh, KM
Smith, SR
Grabowski, CA
Murray, PT
Grote, JG
AF Joyce, Donna M.
Venkat, Narayanan
Ouchen, Fahima
Singh, Kristi M.
Smith, Steven R.
Grabowski, Christopher A.
Murray, P. Terry
Grote, James G.
TI Deoxyribonucleic acid-based hybrid thin films for potential application
as high energy density capacitors
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID COMPOSITE; STORAGE
AB Deoxyribonucleic acid (DNA) based hybrid films incorporating sol-gel-derived ceramics have shown strong promise as insulating dielectrics for high voltage capacitor applications. Our studies of DNA-CTMA (cetyltrimethylammonium) complex/sol-gel ceramic hybrid thin film devices have demonstrated reproducibility and stability in temperature-and frequency-dependent dielectric properties with dielectric constant k similar to 5.0 (1 kHz), as well as reliability in DC voltage breakdown measurements, attaining values consistently in the range of 300-350 V/mu m. The electrical/dielectric characteristics of DNA-CTMA films with sol-gel-derived ceramics were examined to determine the critical energy storage parameters such as voltage breakdown and dielectric constant. (C) 2014 AIP Publishing LLC.
C1 [Joyce, Donna M.] US Air Force, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
[Venkat, Narayanan; Ouchen, Fahima; Singh, Kristi M.; Smith, Steven R.; Grabowski, Christopher A.; Murray, P. Terry; Grote, James G.] US Air Force, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Venkat, Narayanan; Ouchen, Fahima; Smith, Steven R.; Murray, P. Terry] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Singh, Kristi M.; Grabowski, Christopher A.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
RP Joyce, DM (reprint author), US Air Force, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
NR 20
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U1 4
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD MAR 21
PY 2014
VL 115
IS 11
AR 114108
DI 10.1063/1.4868339
PG 5
WC Physics, Applied
SC Physics
GA AE3TM
UT WOS:000333900600047
ER
PT J
AU Parker, CW
Voss, DL
Fritz, TA
AF Parker, C. W.
Voss, D. L.
Fritz, T. A.
TI Electron and proton beam testing of pixelated solid state detectors
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Charged particle detectors; Solid state detectors; Biasing
AB The biasing of guard rings in pixelated ion implanted silicon solid state detectors is often given little analysis as to the potential detrimental effects associated with capacitive coupling of the response of the pixel element to the guard ring and vise versa. This has been demonstrated and illustrates the importance of using beam testing to measure the angular response of particle instruments. We describe herein the development cycle of the Fixed Sensor Head (FSH) instrument, an imaging electron spectrometer that will be flown on the US Air Force's Demonstration and Science eXperiment (DSX) mission. During its construction, the FSH was tested using particle beams many times and each test yielded an important result that contributed to the design of the instrument before being delivered in August 2010.
After several lower energy (< 30 keV) beam calibration tests at Hanscom Air Force Base demonstrated that the FSH was performing very well, a final, higher energy (150 keV < < 1 MeV) beam test at the Goddard Space Flight Center was almost skipped due to budget and scheduling constraints. This final test illuminated a major problem with the biasing of a detector guard ring that would have been difficult if not impossible to track down on orbit. The problem was easily fixed, but serves to highlight the importance of biasing of guard rings properly, and the necessity of testing instruments across the entire range of possible stimuli that they may encounter. (C) 2013 Elsevier B.V. All rights reserved,
C1 [Parker, C. W.; Fritz, T. A.] Boston Univ, Ctr Space Phys, Boston, MA 02215 USA.
[Voss, D. L.] US Air Force Res Lab, Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, NM USA.
RP Parker, CW (reprint author), Boston Univ, Ctr Space Phys, 725 Commonwealth Ave, Boston, MA 02215 USA.
EM cwparker@bu.edu
FU United States Air Force Research Laboratory, Space Vehicles Directorate
[FA8718-05-C-0013, FA9453-10-C-0221]
FX This work was supported by the United States Air Force Research
Laboratory, Space Vehicles Directorate under contract numbers
FA8718-05-C-0013 and FA9453-10-C-0221.
NR 4
TC 1
Z9 1
U1 0
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
EI 1872-9576
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD MAR 21
PY 2014
VL 741
BP 37
EP 41
DI 10.1016/j.nima.2013.11.067
PG 5
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA AB5MQ
UT WOS:000331833100005
ER
PT J
AU Kahler, SW
Vourlidas, A
AF Kahler, S. W.
Vourlidas, A.
TI DO INTERACTING CORONAL MASS EJECTIONS PLAY A ROLE IN SOLAR ENERGETIC
PARTICLE EVENTS?
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE acceleration of particles; Sun: coronal mass ejections (CMEs); Sun:
flares; Sun: particle emission; Online-only material: color figures
ID DIFFUSIVE SHOCK ACCELERATION; LARGE SEP EVENTS; CME INTERACTIONS; CYCLE
23; LASCO; INTENSITIES; CATALOG
AB Gradual solar energetic (E > 10 MeV) particle (SEP) events are produced in shocks driven by fast and wide coronal mass ejections (CMEs). With a set of western hemisphere 20MeV SEP events, we test the possibility that SEP peak intensities, Ip, are enhanced by interactions of their associated CMEs with preceding CMEs (preCMEs) launched during the previous 12 hr. Among SEP events with no, 1, or 2 or more (2+) preCMEs, we find enhanced Ip for the groups with preCMEs, but no differences in TO+TR, the time from CME launch to SEP onset and the time from onset to SEP half-peak Ip. Neither the timings of the preCMEs relative to their associated CMEs nor the preCME widths W-pre, speeds V-pre, or numbers correlate with the SEP Ip values. The 20 MeV Ip of all the preCME groups correlate with the 2 MeV proton background intensities, consistent with a general correlation with possible seed particle populations. Furthermore, the fraction of CMEs with preCMEs also increases with the 2 MeV proton background intensities. This implies that the higher SEP Ip values with preCMEs may not be due primarily to CME interactions, such as the "twin-CME" scenario, but are explained by a general increase of both background seed particles and more frequent CMEs during times of higher solar activity. This explanation is not supported by our analysis of 2 MeV proton backgrounds in two earlier preCME studies of SEP events, so the relevance of CME interactions for larger SEP event intensities remains unclear.
C1 [Kahler, S. W.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Vourlidas, A.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Kahler, SW (reprint author), Air Force Res Lab, Space Vehicles Directorate, 3550 Aberdeen Ave, Kirtland AFB, NM 87117 USA.
EM stephen.kahler@kirtland.af.mil
RI Vourlidas, Angelos/C-8231-2009
OI Vourlidas, Angelos/0000-0002-8164-5948
FU AFOSR Task [2301RDZ4]; NASA LWS TRT program
FX S. Kahler was funded by AFOSR Task 2301RDZ4. A. Vourlidas was supported
by the NASA LWS TR&T program. CME data were taken from the CDAW LASCO
catalog. This CME catalog is generated and maintained at the CDAW Data
Center by NASA and The Catholic University of America in cooperation
with the Naval Research Laboratory. SOHO is a project of international
cooperation between ESA and NASA. We acknowledge use of the data from
the ERNE Web site and thank D. Reames for the use of the EPACT proton
data.
NR 35
TC 14
Z9 14
U1 1
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD MAR 20
PY 2014
VL 784
IS 1
AR 47
DI 10.1088/0004-637X/784/1/47
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AG5KD
UT WOS:000335457000047
ER
PT J
AU Ard, SG
Melko, JJ
Ushakov, VG
Johnson, R
Fournier, JA
Shuman, NS
Guo, H
Troe, J
Viggiano, AA
AF Ard, Shaun G.
Melko, Joshua J.
Ushakov, Vladimir G.
Johnson, Ryan
Fournier, Joseph A.
Shuman, Nicholas S.
Guo, Hua
Troe, Juergen
Viggiano, Albert A.
TI Activation of Methane by FeO+: Determining Reaction Pathways through
Temperature-Dependent Kinetics and Statistical Modeling
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID ION-MOLECULE REACTIONS; FORMING BIMOLECULAR REACTIONS; UNIMOLECULAR BOND
FISSION; TRANSITION-METAL CATIONS; GAS-PHASE; 2-STATE REACTIVITY; DIRECT
CONVERSION; ELECTRONIC-STRUCTURE; FLOWING AFTERGLOW; ROOM-TEMPERATURE
AB The temperature dependences of the rate constants and product branching ratios for the reactions of FeO+ with CH4 and CD4 have been measured from 123 to 700 K. The 300 K. rate constants are 9.5 X 10(-11) and 5.1 X 10(-11) cm(3) s(-1) for the CH4 and CD4 reactions, respectively. At low temperatures, the Fe+ + CH3OH/CD3OD product channel dominates, while at higher temperatures, FeOH+/FeOD+ + CH3/CD3 becomes the majority channel. The data were found to connect well with previous experiments at higher translational energies. The kinetics were simulated using a statistical adiabatic channel model (vibrations are adiabatic during approach of the reactants), which reproduced the experimental data of both reactions well over the extended temperature and energy ranges. Stationary point energies along the reaction pathway determined by ab initio calculations seemed to be only approximate and were allowed to vary in the statistical model. The model shows a crossing from the ground-state sextet surface to the excited quartet surface with large efficiency, indicating that both states are involved. The reaction bottleneck for the reaction is found to be the quartet barrier, for CH, modeled as -22 kJ mol(-1) relative to the sextet reactants. Contrary to previous rationalizations, neither less favorable spin-crossing at increased energies nor the opening of additional reaction channels is needed to explain the temperature dependence of the product branching fractions. It is found that a proper treatment of state-specific rotations is crucial. The modeled energy for the FeOH+ + CH3 channel (-1 kJ mol(-1)) agrees with the experimental thermochemical value, while the modeled energy of the Fe+ + CH3OH channel (-10 kJ mol(-1)) corresponds to the quartet iron product, provided that spin-switching near the products is inefficient. Alternative possibilities for spin switching during the reaction are considered. The modeling provides unique insight into the reaction mechanisms as well as energetic benchmarks for the reaction surface.
C1 [Ard, Shaun G.; Melko, Joshua J.; Shuman, Nicholas S.; Viggiano, Albert A.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Ushakov, Vladimir G.] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Russia.
[Ushakov, Vladimir G.; Troe, Juergen] Max Planck Inst Biophys Chem, D-37077 Gottingen, Germany.
[Johnson, Ryan; Guo, Hua] Univ New Mexico, Dept Chem & Chem Biol, Albuquerque, NM 87131 USA.
[Fournier, Joseph A.] Yale Univ, Sterling Chem Lab, New Haven, CT 06520 USA.
[Troe, Juergen] Univ Gottingen, Inst Phys Chem, D-37077 Gottingen, Germany.
RP Viggiano, AA (reprint author), Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
EM afrl.rvborgmailbox@kirtland.af.mil
RI Guo, Hua/J-2685-2014
OI Guo, Hua/0000-0001-9901-053X
FU Department of Energy [DE-FG02-05ER15694]; EOARD [FA8655-11-1-3077]; Air
Force Office of Scientific Research [AFOSR-2303EP]; National Research
Council; Air Force Research Laboratory through the Space Scholars
Program; Department of Defense
FX The authors would like to dedicate this article to Helmut Schwarz on the
occasion of his 70th birthday, acknowledging his seminal contributions
to the field of this article. R.J. and H.G. are supported by Department
of Energy (DE-FG02-05ER15694), and they thank Richard Dawes for help
with the CCSD(T)-F12 calculations. J.T. acknowledges support from the
EOARD Grant Award FA8655-11-1-3077. N.S.S. and A.A.V. are grateful for
the support of the Air Force Office of Scientific Research for this work
under Project AFOSR-2303EP. J.J.M. and S.G.A. acknowledge the support of
the National Research Council. J.A.F. acknowledges the support of the
Air Force Research Laboratory through the Space Scholars Program, as
well as the Department of Defense for support through a National Defense
Science and Engineering Graduate Fellowship.
NR 67
TC 12
Z9 12
U1 4
U2 50
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD MAR 20
PY 2014
VL 118
IS 11
BP 2029
EP 2039
DI 10.1021/jp5000705
PG 11
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AD6OW
UT WOS:000333381700007
PM 24568117
ER
PT J
AU Park, K
Biswas, S
Kanel, S
Nepal, D
Vaia, RA
AF Park, Kyoungweon
Biswas, Sushmita
Kanel, Sushil
Nepal, Dhriti
Vaia, Richard A.
TI Engineering the Optical Properties of Gold Nanorods: Independent Tuning
of Surface Plasmon Energy, Extinction Coefficient, and Scattering Cross
Section
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID ASPECT RATIO; GROWTH-MECHANISM; METAL NANORODS; PARTICLE-SIZE; AU
NANORODS; SHAPE; NANOPARTICLES; ABSORPTION; DEPENDENCE; FLUORESCENCE
AB The future integration of plasmonic nanoparticles, such as gold nanorods (Au NRs), into applications requires the ability to tune the components of their optical properties to optimize performance for the underlying technology. Verifying techniques that model the resonance energy and associated extinction, scattering, and absorption cross sections necessitate experimental data from series of Au NRs where structural features are independently tuned. Here, the extinction cross section and scattering efficiency are presented for Au NR series with high compositional and structural purity where effective volume, aspect ratio, length, and diameter are independently varied by factors of 25, 3, 2, and 4, respectively. The extinction cross sections quantitatively agree with prior calculations, confirming that the volume of the rod is the dominant factor. Comparisons of the scattering efficiency however are less precise, with both quantitative and qualitative differences between the role of rod volume and aspect ratio. Such extensive experimental data sets provide a critical platform to improve quantitative structure-property correlations, and thus enable design optimization of plasmonic nanoparticles for emerging applications.
C1 [Park, Kyoungweon; Biswas, Sushmita; Nepal, Dhriti; Vaia, Richard A.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Park, Kyoungweon; Biswas, Sushmita] UES Inc, Dayton, OH 45432 USA.
[Kanel, Sushil] Air Force Inst Technol, Dept Syst & Engn Management, Wright Patterson AFB, OH 45433 USA.
RP Vaia, RA (reprint author), Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM richard.vaia@us.af.mil
FU Materials and Manufacturing Directorate; Air Force Office of Scientific
Research
FX This work was completed at Air Force Research Laboratory (AFRL) at
Wright Patterson Air Force Base with funding from Materials and
Manufacturing Directorate, as well as Air Force Office of Scientific
Research. We would like to thank Deborah Roose (EPA) for setup and data
collection of ICP-OES and Elizabeth Maurer and Dr. Saber Hussain (AFRL)
for ICP-MS.
NR 48
TC 14
Z9 14
U1 7
U2 65
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD MAR 20
PY 2014
VL 118
IS 11
BP 5918
EP 5926
DI 10.1021/jp5013279
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA AD6OS
UT WOS:000333381300037
ER
PT J
AU Makri, E
Ramezani, H
Kottos, T
Vitebskiy, I
AF Makri, Eleana
Ramezani, Hamidreza
Kottos, Tsampikos
Vitebskiy, Ilya
TI Concept of a reflective power limiter based on nonlinear localized modes
SO PHYSICAL REVIEW A
LA English
DT Article
ID PHOTONIC CRYSTALS; SEMICONDUCTORS; ABSORPTION; REFRACTION; SILICON;
LIGHT
AB Optical limiters are designed to transmit low-intensity light, while blocking the light with excessively high intensity. A typical passive limiter absorbs excessive electromagnetic energy, which can cause its overheating and destruction. We propose the concept of a photonic reflective limiter based on resonance transmission via a localized mode. Such a limiter does not absorb the high-level radiation, but rather reflects it back to space. Importantly, the nearly total reflection occurs within a broad frequency range and direction of incidence. The same concept can be applied to infrared and microwave frequencies.
C1 [Makri, Eleana; Ramezani, Hamidreza; Kottos, Tsampikos] Wesleyan Univ, Dept Phys, Middletown, CT 06459 USA.
[Vitebskiy, Ilya] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Makri, E (reprint author), Wesleyan Univ, Dept Phys, Middletown, CT 06459 USA.
FU Alion Science and Technology; Air Force Office of Scientific Research
[LRIR09RY04COR, FA 955010-1-0433]; AFOSRMURI [FA9550-14-1-0037]
FX This work is partly sponsored by the Air Force Research Laboratory
(AFRL/RYDP) through the AMMTIAC contract with Alion Science and
Technology, and by the Air Force Office of Scientific Research
LRIR09RY04COR and FA 955010-1-0433 and by an AFOSRMURI grant
FA9550-14-1-0037.
NR 19
TC 6
Z9 6
U1 0
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
EI 1094-1622
J9 PHYS REV A
JI Phys. Rev. A
PD MAR 19
PY 2014
VL 89
IS 3
AR 031802
DI 10.1103/PhysRevA.89.031802
PG 5
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA AD4AF
UT WOS:000333187300001
ER
PT J
AU Mousavi, SH
Khanikaev, AB
Allen, J
Allen, M
Shvets, G
AF Mousavi, S. Hossein
Khanikaev, Alexander B.
Allen, Jeffery
Allen, Monica
Shvets, Gennady
TI Gyromagnetically Induced Transparency of Metasurfaces
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SPLIT-RING RESONATORS; FANO RESONANCE; METAMATERIALS; INTERFERENCE;
ABSORPTION; CLUSTERS; ANALOG; INDEX
AB We demonstrate that the presence of a (gyro) magnetic substrate can produce an analog of electromagnetically induced transparency in Fano-resonant metamolecules. The simplest implementation of such gyromagnetically induced transparency (GIT) in a metasurface, comprised of an array of resonant antenna pairs placed on a gyromagnetic substrate and illuminated by a normally incident electromagnetic wave, is analyzed. Time reversal and spatial inversion symmetry breaking introduced by the dc magnetization makes metamolecules bianisotropic. This causes Fano interference between the otherwise uncoupled symmetric and antisymmetric resonances of the metamolecules giving rise to a sharp transmission peak through the otherwise reflective metasurface. We show that, for an oblique wave incidence, one-way GIT can be achieved by the combination of spatial dispersion and gyromagnetic effect. These theoretically predicted phenomena pave the way to nonreciprocal switches and isolators that can be dynamically controlled by electric currents.
C1 [Mousavi, S. Hossein; Shvets, Gennady] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA.
[Mousavi, S. Hossein] CUNY Queens Coll, Dept Phys, Queens, NY 11367 USA.
[Mousavi, S. Hossein] CUNY Queens Coll, Dept Phys, Queens, NY 11367 USA.
[Khanikaev, Alexander B.] CUNY Queens Coll, Grad Ctr, New York, NY 10016 USA.
[Allen, Jeffery; Allen, Monica] US Air Force, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Khanikaev, AB (reprint author), CUNY Queens Coll, Dept Phys, Queens, NY 11367 USA.
EM khanikaev@gmail.com; gena@physics.utexas.edu
RI Khanikaev, Alexander/F-5438-2010
FU AFOSR Lab Task [13RY02COR]; Air Force Research Laboratory (AFRL/RY),
through the Advanced Materials, Manufacturing and Testing Information
Analysis Center (AMMTIAC) contract with Alion Science and Technology
[FA4600-06-D003]
FX The authors (J.W.A. and M. S. A.) are thankful for the funding support
through AFOSR Lab Task 13RY02COR (program officer Dr. Harold Weinstock).
S. H. M., A. B. K., and G. S. acknowledge support from the Air Force
Research Laboratory (AFRL/RY), through the Advanced Materials,
Manufacturing and Testing Information Analysis Center (AMMTIAC) contract
with Alion Science and Technology, Contract No. FA4600-06-D003. S. H. M.
and A. B. K. contributed equally to this work.
NR 57
TC 17
Z9 17
U1 5
U2 87
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD MAR 18
PY 2014
VL 112
IS 11
AR 117402
DI 10.1103/PhysRevLett.112.117402
PG 6
WC Physics, Multidisciplinary
SC Physics
GA AD0LQ
UT WOS:000332925900036
PM 24702414
ER
PT J
AU Ard, SG
Melko, JJ
Shuman, NS
Viggiano, A
AF Ard, Shaun G.
Melko, Joshua J.
Shuman, Nicholas S.
Viggiano, Albert
TI Reactions of Sm, Sm+, and SmO+ in the atmosphere: Temperature dependent
kinetics
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Ard, Shaun G.; Melko, Joshua J.; Shuman, Nicholas S.; Viggiano, Albert] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
EM Albert.Viggiano@kirtland.af.mil
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 170-PHYS
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457603573
ER
PT J
AU Carty, F
Corley, C
Shurdha, E
Iacono, ST
AF Carty, Ford
Corley, Cynthia
Shurdha, Endrit
Iacono, Scott T.
TI New fluorine-containing polyarylamines for organic electronics
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Carty, Ford; Corley, Cynthia; Shurdha, Endrit; Iacono, Scott T.] US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
EM c14ford.carty@usafa.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 534-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457605071
ER
PT J
AU Clayton, NA
Kappagantula, KS
Pantoya, ML
Kettwich, SC
Iacono, ST
AF Clayton, Nicholas A.
Kappagantula, Keerti S.
Pantoya, Michelle L.
Kettwich, Sharon C.
Iacono, Scott T.
TI Fabrication and characterization of metallized nanofiber composites for
energetic applications
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Clayton, Nicholas A.; Kettwich, Sharon C.; Iacono, Scott T.] US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
[Kappagantula, Keerti S.; Pantoya, Michelle L.] Texas Tech Univ, Dept Mech Engn, Lubbock, TX 79409 USA.
EM scott.iacono@usafa.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 139-PMSE
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457604121
ER
PT J
AU Corley, CA
Guenthner, AJ
Sahagun, CM
Lamison, KR
Reams, JT
Hassan, M
Morgan, SE
Iacono, ST
Mabry, JM
AF Corley, Cynthia A.
Guenthner, Andrew J.
Sahagun, Christopher M.
Lamison, Kevin R.
Reams, Josiah T.
Hassan, Mohammad
Morgan, Sarah E.
Iacono, Scott T.
Mabry, Joseph M.
TI New class of fluorinated cyanate ester resins for multifunctional
performance
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Corley, Cynthia A.; Iacono, Scott T.] US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
[Guenthner, Andrew J.; Mabry, Joseph M.] Air Force Res Lab, Aerosp Syst Directorate, Edwards AFB, CA 93524 USA.
[Sahagun, Christopher M.] Air Force Res Lab, Natl Res Council, Edwards AFB, CA 93524 USA.
[Lamison, Kevin R.; Reams, Josiah T.] ERC Incorporatd, Edwards AFB, CA 93524 USA.
[Hassan, Mohammad; Morgan, Sarah E.] Univ So Mississippi, Sch Polymers & High Performance Mat, Hattiesburg, MS 39046 USA.
EM cynthia.corley@usafa.edu
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 352-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457604746
ER
PT J
AU Eigenbrodt, BC
Young, AM
Segre, CU
Reitz, TL
AF Eigenbrodt, Bryan C.
Young, Anthony M.
Segre, Carlo U.
Reitz, Thomas L.
TI High temperature, in situ X-ray absorption spectroscopy study of
Sr2MgMoO6 solid oxide fuel cell anode materials
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Eigenbrodt, Bryan C.] Villanova Univ, Dept Chem, Villanova, PA 19085 USA.
[Young, Anthony M.; Reitz, Thomas L.] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
[Segre, Carlo U.] IIT, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USA.
EM bryan.eigenbrodt@villanova.edu
RI Segre, Carlo/B-1548-2009
OI Segre, Carlo/0000-0001-7664-1574
NR 0
TC 0
Z9 0
U1 0
U2 2
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 433-PHYS
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457603812
ER
PT J
AU Knecht, MR
Zahran, EM
Bedford, NM
Nguyen, MA
Chang, YJ
Guiton, BS
Naik, RR
Bachas, LG
AF Knecht, Marc R.
Zahran, Elsayed M.
Bedford, Nicholas M.
Nguyen, Michelle A.
Chang, Yao-Jen
Guiton, Beth S.
Naik, Rajesh R.
Bachas, Leonidas G.
TI Light activated tandem catalysis driven by multicomponent nanomaterials
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Knecht, Marc R.; Zahran, Elsayed M.; Bedford, Nicholas M.; Nguyen, Michelle A.; Bachas, Leonidas G.] Univ Miami, Dept Chem, Coral Gables, FL 33146 USA.
[Bedford, Nicholas M.; Naik, Rajesh R.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Chang, Yao-Jen; Guiton, Beth S.] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA.
[Guiton, Beth S.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
EM knecht@miami.edu
RI Bachas, Leonidas/G-2479-2015
NR 0
TC 0
Z9 0
U1 1
U2 7
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 432-INOR
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457601516
ER
PT J
AU Miller, HA
Dees, K
Piazza, M
Shurdha, E
Balaich, GJ
Iacono, ST
AF Miller, Hannah A.
Dees, Kelsey
Piazza, Matthew
Shurdha, Endrit
Balaich, Gary J.
Iacono, Scott T.
TI Towards the design of new fulvene-derivatized conjugated polymers
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
US Air Force Acad, Chem Reserach Ctr, Colorado Springs, CO 80840 USA.
EM hannah.miller.ctr@usafa.edu
NR 0
TC 0
Z9 0
U1 1
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 498-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457605035
ER
PT J
AU Miller, HA
Neat, JW
Avjian, EK
Clayton, N
Ball, DW
Kettwich, SC
Iacono, ST
AF Miller, Hannah A.
Neat, James W., II
Avjian, Eryn K.
Clayton, Nicholas
Ball, David W.
Kettwich, Sharon C.
Iacono, Scott T.
TI Metalized perfluoropolyethers utilized in high performance materials
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Miller, Hannah A.; Neat, James W., II; Avjian, Eryn K.; Clayton, Nicholas; Kettwich, Sharon C.; Iacono, Scott T.] US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
[Ball, David W.] Cleveland State Univ, Dept Chem, Cleveland, OH 80840 USA.
EM hannah.miller.315@gmail.com
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 403-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457604793
ER
PT J
AU Morgan, SE
Aubrecht, KB
Berda, EB
Cavicchi, KA
Costanzo, PJ
Gabriel, GJ
Goh, C
Goh, SL
Iacono, ST
Savin, DA
AF Morgan, Sarah E.
Aubrecht, Katherine B.
Berda, Erik B.
Cavicchi, Kevin A.
Costanzo, Philip J.
Gabriel, Gregory J.
Goh, Christopher
Goh, Sarah L.
Iacono, Scott T.
Savin, Daniel A.
TI Polymer science curriculum for the 21st century: PUNK
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Morgan, Sarah E.; Savin, Daniel A.] Univ So Mississippi, Sch Polymers & High Performance Mat, Hattiesburg, MS 39406 USA.
[Aubrecht, Katherine B.] SUNY Stony Brook, Dept Chem & Sustainabil Studies, Stony Brook, NY USA.
[Berda, Erik B.] Univ New Hampshire, Dept Chem, Durham, NH 03824 USA.
[Cavicchi, Kevin A.] Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA.
[Costanzo, Philip J.] Calif Polytech State Univ San Luis Obispo, Dept Chem & Biochem, San Luis Obispo, CA 93407 USA.
[Goh, Christopher; Goh, Sarah L.] Williams Coll, Dept Chem, Williamstown, MA 01267 USA.
[Iacono, Scott T.] US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
[Gabriel, Gregory J.] Kennesaw State Univ, Dept Chem & Biochem, Kennesaw, GA USA.
EM sarah.morgan@usm.edu
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 538-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457605075
ER
PT J
AU Park, J
Shurdha, E
Iacono, ST
Balaich, GJ
Ball, DW
AF Park, Jaewoo
Shurdha, Endrit
Iacono, Scott T.
Balaich, Gary J.
Ball, David W.
TI Bipyridine decorated fulvenes: New ligands and functional materials for
organic electronics
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Park, Jaewoo; Shurdha, Endrit; Iacono, Scott T.; Balaich, Gary J.] US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
[Ball, David W.] Cleveland State Univ, Dept Chem, Cleveland, OH 44115 USA.
EM Jaewoo.Park@usafa.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 395-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457604785
ER
PT J
AU Shurdha, E
Iacono, ST
Balaich, GJ
He, HS
Ball, DW
AF Shurdha, Endrit
Iacono, Scott T.
Balaich, Gary J.
He, Honshan
Ball, David W.
TI Trisubstituted fulvenes: New molecular architectures for
donor-p-acceptor dye sensitizers
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Shurdha, Endrit; Iacono, Scott T.; Balaich, Gary J.] US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
[He, Honshan] Eastern Illinois Univ, Dept Chem, Charleston, IL 61920 USA.
[Ball, David W.] Cleveland State Univ, Dept Chem, Cleveland, OH 44115 USA.
EM endrit.shurdha.ctr@usafa.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 394-POLY
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457604784
ER
PT J
AU Vaia, R
AF Vaia, Richard
TI Single component hybrid nanocomposites: "Hairy" nanoparticle assemblies
(aHNPs)
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Vaia, Richard] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM richard.vaia@wpafb.af.mil
NR 0
TC 0
Z9 0
U1 0
U2 2
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 192-PMSE
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HZ
UT WOS:000348457604172
ER
PT J
AU Gabriel, GJ
Aubrecht, KB
Berda, EB
Cavicchi, KA
Costanzo, PJ
Goh, C
Goh, SL
Iacono, ST
Morgan, SE
Savin, DA
AF Gabriel, Gregory J.
Aubrecht, Katherine B.
Berda, Erik B.
Cavicchi, Kevin A.
Costanzo, Philip J.
Goh, Christopher
Goh, Sarah L.
Iacono, Scott T.
Morgan, Sarah E.
Savin, Daniel A.
TI Use of a new online resource, PUNK, to facilitate the inclusion of
polymer topics in first semester organic chemistry
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Gabriel, Gregory J.] Kennesaw State Univ, Dept Chem & Biochem, Kennesaw, GA 30144 USA.
[Aubrecht, Katherine B.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
[Berda, Erik B.] Univ New Hampshire, Dept Chem, Durham, NH 03824 USA.
[Cavicchi, Kevin A.] Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA.
[Costanzo, Philip J.] Calif Polytech State Univ San Luis Obispo, Dept Chem & Biochem, San Luis Obispo, CA 93407 USA.
[Goh, Christopher; Goh, Sarah L.] Williams Coll, Dept Chem, Williamstown, MA 01267 USA.
[Iacono, Scott T.] US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
[Morgan, Sarah E.; Savin, Daniel A.] Univ So Mississippi, Sch Polymers & High Performance Mat, Hattiesburg, MS 39406 USA.
EM ggabrie2@kennesaw.edu
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 163-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HD
UT WOS:000348455202086
ER
PT J
AU Hill, E
Knoerzer, T
AF Hill, Elise
Knoerzer, Timm
TI Synthesis of modified gold nanoparticles as highly sensitive DNA-binding
sensors
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Hill, Elise; Knoerzer, Timm] USAF Acad, Dept Chem, Colorado Springs, CO 80840 USA.
EM c14elise.hill@usafa.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 52-BIOL
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HD
UT WOS:000348455200380
ER
PT J
AU Zhang, P
Hicks, BW
AF Zhang, Pamela
Hicks, Barry W.
TI Investigating tyrosine FRET in fluorescent protein for biosensing
applications
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
CT 247th National Spring Meeting of the American-Chemical-Society (ACS)
CY MAR 16-20, 2014
CL Dallas, TX
SP Amer Chem Soc
C1 [Zhang, Pamela; Hicks, Barry W.] US Air Force Acad, Colorado Springs, CO 80840 USA.
EM C14Pamela.Zhang@usafa.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD MAR 16
PY 2014
VL 247
MA 381-CHED
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA AZ8HD
UT WOS:000348455202296
ER
PT J
AU Lee, KM
Lynch, BM
Luchette, P
White, TJ
AF Lee, Kyung Min
Lynch, Brandon M.
Luchette, Paul
White, Timothy J.
TI Photomechanical Effects in Liquid Crystal Polymer Networks Prepared with
m-Fluoroazobenzene
SO JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
LA English
DT Article
DE azobenzene; azo polymers; isomer; isomerization; liquid-crystalline
polymers (LCP); photomechanical effects
ID CROSS-LINKED POLYMERS; VISIBLE-LIGHT; NEMATIC ELASTOMERS; ISOMERIZATION;
GLASSY; DEFORMATION; AZOBENZENES; TRANSITION; ACTUATORS; SYSTEM
AB The photomechanical response and photochemistry of a conventional, unsubstituted azobenzene-functionalized liquid crystalline polymer network (azo-LCN) is contrasted to that of an analogous material prepared with meta-fluorinated azobenzene chromophores. The polydomain azo-LCN materials exhibit nearly identical thermomechanical and optical properties. Photomechanical characterization indicates that the fluorination of the azobenzene chromophore reduces the deflection of cantilevers composed of the materials by 50%, which spectroscopic analysis reveals is due to a reduction in the ability of this material to isomerize and potentially reorient. This work is further confirmation that the underlying photochemistry of azobenzene is a primary contributor to the generation of photomechanical work in these materials. (c) 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 876-882
C1 [Lee, Kyung Min; Lynch, Brandon M.; White, Timothy J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Lee, Kyung Min] Azimuth Corp, Dayton, OH 45433 USA.
[Luchette, Paul] AlphaMicron Inc, Kent, OH 44240 USA.
RP White, TJ (reprint author), Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM timothy.white.24@us.af.mil
RI White, Timothy/D-4392-2012
FU Air Force Office of Scientific Research; Air Force Research Laboratory;
National Science Foundation [0606357]
FX K. M. Lee, B. M. Lynch, and T. J. White acknowledge the Air Force Office
of Scientific Research and the Air Force Research Laboratory for
financial support. P. Luchette acknowledges support from the National
Science Foundation (Grant #0606357).
NR 51
TC 9
Z9 10
U1 5
U2 77
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-624X
EI 1099-0518
J9 J POLYM SCI POL CHEM
JI J. Polym. Sci. Pol. Chem.
PD MAR 15
PY 2014
VL 52
IS 6
BP 876
EP 882
DI 10.1002/pola.27072
PG 7
WC Polymer Science
SC Polymer Science
GA AA1KH
UT WOS:000330854600016
ER
PT J
AU Reshetnyak, VY
Pinkevych, IP
Sluckin, TJ
Cook, G
Evans, DR
AF Reshetnyak, V. Yu.
Pinkevych, I. P.
Sluckin, T. J.
Cook, G.
Evans, D. R.
TI Beam coupling in hybrid photorefractive inorganic-cholesteric liquid
crystal cells: Impact of optical rotation
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID HIGH-GAIN; PRE-TILT; AMPLIFICATION; SURFACE; LIGHT
AB We develop a theoretical model to describe two-beam energy exchange in a hybrid photorefractive inorganic-cholesteric cell. A cholesteric layer is placed between two inorganic substrates. One of the substrates is photorefractive (Ce:SBN). Weak and strong light beams are incident on the hybrid cell. The interfering light beams induce a periodic space-charge field in the photorefractive window. This penetrates into the cholesteric liquid crystal (LC), inducing a diffraction grating written on the LC director. In the theory, the flexoelectric mechanism for electric field-director coupling is more important than the LC static dielectric anisotropy coupling. The LC optics is described in the Bragg regime. Each beam induces two circular polarized waves propagating in the cholesteric cell with different velocities. The model thus includes optical rotation in the cholesteric LC. The incident light beam wavelength can fall above, below, or inside the cholesteric gap. The theory calculates the energy gain of the weak beam, as a result of its interaction with the pump beam within the diffraction grating. Theoretical results for exponential gain coefficients are compared with experimental results for hybrid cells filled with cholesteric mixture BL038/CB15 at different concentrations of chiral agent CB15. Reconciliation between theory and experiment requires the inclusion of a phenomenological multiplier in the magnitude of the director grating. This multiplier is cubic in the space-charge field, and we provide a justification of the q-dependence of the multiplier. Within this paradigm, we are able to fit theory to experimental data for cholesteric mixtures with different spectral position of cholesteric gap relative to the wavelength of incident beams, subject to the use of some fitting parameters. (C) 2014 AIP Publishing LLC.
C1 [Reshetnyak, V. Yu.; Pinkevych, I. P.] Natl Taras Shevchenko Univ Kyiv, Fac Phys, UA-01601 Kiev, Ukraine.
[Sluckin, T. J.] Univ Southampton, Div Math Sci, Southampton SO17 1BJ, Hants, England.
[Cook, G.; Evans, D. R.] US Air Force, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Reshetnyak, VY (reprint author), Natl Taras Shevchenko Univ Kyiv, Fac Phys, Volodymyrska St 64, UA-01601 Kiev, Ukraine.
RI Reshetnyak, Victor/B-6722-2008
OI Reshetnyak, Victor/0000-0003-0515-9814
FU EOARD Grant [078001]
FX This work has been partially supported by EOARD Grant 078001(V.Y.R. and
I.P.P.). I.P.P. and T.J.S. thank the Isaac Newton Institute for
Mathematical Sciences, Cambridge, UK, for hospitality during the
preparation of this manuscript.
NR 37
TC 1
Z9 1
U1 2
U2 22
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD MAR 14
PY 2014
VL 115
IS 10
AR 103103
DI 10.1063/1.4867479
PG 17
WC Physics, Applied
SC Physics
GA AD2RP
UT WOS:000333083100003
ER
PT J
AU Zocco, AT
You, H
Hagen, JA
Steckl, AJ
AF Zocco, Adam T.
You, Han
Hagen, Joshua A.
Steckl, Andrew J.
TI Pentacene organic thin-film transistors on flexible paper and glass
substrates
SO NANOTECHNOLOGY
LA English
DT Article
DE OTFT; cellulose; pentacene; paper; thin films
ID FIELD-EFFECT TRANSISTORS; ELECTRONICS; CELLULOSE
AB Pentacene-based organic thin-film transistors (OTFTs) were fabricated on several types of flexible substrate: commercial photo paper, ultra-smooth specialty paper and ultra-thin (100 mu M) flexible glass. The transistors were fabricated entirely through dry-step processing. The transconductance and field-effect mobility of OTFTs on photo paper reached values of similar to 0.52 mS m(-1) and similar to 0.1 cm(2) V-1 s(-1), respectively. Preliminary results on the lifetime of OTFTs on photo paper yielded stable transconductance and mobility values over a period of more than 250 h. The comparable characteristics of OTFTs fabricated on widely available, low cost paper and high quality expensive liquid crystal display glass indicate the potential importance of cellulose-based electronic devices.
C1 [Zocco, Adam T.; You, Han; Steckl, Andrew J.] Univ Cincinnati, Dept Elect Engn & Comp Syst, Nanoelect Lab, Cincinnati, OH 45221 USA.
[Hagen, Joshua A.] US Air Force Res Lab, Human Effectiveness Directorate, Wright Patterson Air Force Base, Dayton, OH 45433 USA.
RP Zocco, AT (reprint author), Univ Cincinnati, Dept Elect Engn & Comp Syst, Nanoelect Lab, Cincinnati, OH 45221 USA.
EM a.steckl@uc.edu
RI You, Han/A-1970-2011;
OI Steckl, Andrew/0000-0002-1868-4442
FU US Air Force Research Laboratory
FX Partial support for this research is provided by the US Air Force
Research Laboratory. Specialty paper and flexible glass substrates were
generously provided by Sappi and Corning, respectively. The authors
acknowledge many useful technical discussions with members of the
Nanoelectronics Laboratory and the Novel Devices Laboratory at the
University of Cincinnati (UC) and the assistance provided by Jeffrey
Simkins (UC) in fabricating the shadow masks used in this work.
NR 23
TC 15
Z9 15
U1 5
U2 96
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
EI 1361-6528
J9 NANOTECHNOLOGY
JI Nanotechnology
PD MAR 7
PY 2014
VL 25
IS 9
AR 094005
DI 10.1088/0957-4484/25/9/094005
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA AB1SI
UT WOS:000331573500007
PM 24521939
ER
PT J
AU Xu, YJ
Remeikas, C
Pham, K
AF Xu, Yunjun
Remeikas, Charles
Khanh Pham
TI Local pursuit strategy-inspired cooperative trajectory planning
algorithm for a class of nonlinear constrained dynamical systems
SO INTERNATIONAL JOURNAL OF CONTROL
LA English
DT Article
DE Bio-inspired control; nonlinear constrained optimisation; cooperative
control
ID MODEL-PREDICTIVE CONTROL; MULTIVEHICLE SYSTEMS; MULTIAGENT SYSTEMS;
CONSENSUS; AGENTS; MOTION; CAMOUFLAGE; NETWORKS; VEHICLES; ROBOTS
AB Cooperative trajectory planning is crucial for networked vehicles to respond rapidly in cluttered environments and has a significant impact on many applications such as air traffic or border security monitoring and assessment. One of the challenges in cooperative planning is to find a computationally efficient algorithm that can accommodate both the complexity of the environment and real hardware and configuration constraints of vehicles in the formation. Inspired by a local pursuit strategy observed in foraging ants, feasible and optimal trajectory planning algorithms are proposed in this paper for a class of nonlinear constrained cooperative vehicles in environments with densely populated obstacles. In an iterative hierarchical approach, the local behaviours, such as the formation stability, obstacle avoidance, and individual vehicle's constraints, are considered in each vehicle's (i.e. follower's) decentralised optimisation. The cooperative-level behaviours, such as the inter-vehicle collision avoidance, are considered in the virtual leader's centralised optimisation. Early termination conditions are derived to reduce the computational cost by not wasting time in the local-level optimisation if the virtual leader trajectory does not satisfy those conditions. The expected advantages of the proposed algorithms are (1) the formation can be globally asymptotically maintained in a decentralised manner; (2) each vehicle decides its local trajectory using only the virtual leader and its own information; (3) the formation convergence speed is controlled by one single parameter, which makes it attractive for many practical applications; (4) nonlinear dynamics and many realistic constraints, such as the speed limitation and obstacle avoidance, can be easily considered; (5) inter-vehicle collision avoidance can be guaranteed in both the formation transient stage and the formation steady stage; and (6) the computational cost in finding both the feasible and optimal solutions is low. In particular, the feasible solution can be computed in a very quick fashion. The minimum energy trajectory planning for a group of robots in an obstacle-laden environment is simulated to showcase the advantages of the proposed algorithms.
C1 [Xu, Yunjun; Remeikas, Charles] Univ Cent Florida, Dept Mech & Aerosp Engn, Orlando, FL 32816 USA.
[Khanh Pham] Air Force Res Lab, Space Vehicles Directorate, Albuquerque, NM USA.
RP Xu, YJ (reprint author), Univ Cent Florida, Dept Mech & Aerosp Engn, Orlando, FL 32816 USA.
EM yunjun.xu@ucf.edu
FU Air Force Research Laboratory Summer Faculty Fellowship Program
[FA94531110305, FA94531210130]
FX The authors would like to thank the Air Force Research Laboratory Summer
Faculty Fellowship Program [grant number FA94531110305], [grant number
FA94531210130] for the support.
NR 43
TC 2
Z9 2
U1 1
U2 10
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0020-7179
EI 1366-5820
J9 INT J CONTROL
JI Int. J. Control
PD MAR 4
PY 2014
VL 87
IS 3
BP 506
EP 523
DI 10.1080/00207179.2013.845911
PG 18
WC Automation & Control Systems
SC Automation & Control Systems
GA AB9ZB
UT WOS:000332153200005
ER
PT J
AU Guthrie, OW
Xu, HL
Wong, BA
McInturf, SM
Reboulet, JE
Ortiz, PA
Mattie, DR
AF Guthrie, O'neil W.
Xu, Helen
Wong, Brian A.
McInturf, Shawn M.
Reboulet, Jim E.
Ortiz, Pedro A.
Mattie, David R.
TI EXPOSURE TO LOW LEVELS OF JET-PROPULSION FUEL IMPAIRS BRAINSTEM ENCODING
OF STIMULUS INTENSITY
SO JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART A-CURRENT ISSUES
LA English
DT Article
ID AUDITORY-EVOKED-POTENTIALS; PRODUCT OTOACOUSTIC EMISSIONS; INDUCED
HEARING-LOSS; AGE-RELATED-CHANGES; AIRCRAFT MAINTENANCE PERSONNEL;
SEROTONERGIC NEUROTRANSMISSION; FISCHER-344 RATS; NOISE EXPOSURE;
DEPENDENCE; RESPONSES
AB Jet propulsion fuel-8 (JP-8) is a kerosene-based fuel that is used in military jets. The U.S. Armed Services and North Atlantic Treaty Organization countries adopted JP-8 as a standard fuel source and the U.S. military alone consumes more than 2.5 billion gallons annually. Preliminary epidemiologic data suggested that JP-8 may interact with noise to induce hearing loss, and animal studies revealed damage to presynaptic sensory cells in the cochlea. In the current study, Long-Evans rats were divided into four experimental groups: control, noise only, JP-8 only, and JP-8 + noise. A subototoxic level of JP-8 was used alone or in combination with a nondamaging level of noise. Functional and structural assays of the presynaptic sensory cells combined with neurophysiologic studies of the cochlear nerve revealed that peripheral auditory function was not affected by individual exposures and there was no effect when the exposures were combined. However, the central auditory nervous system exhibited impaired brainstem encoding of stimulus intensity. These findings may represent important and major shifts in the theoretical framework that governs current understanding of jet fuel and/or jet fuel + noise-induced ototoxicity. From an epidemiologic perspective, results indicate that jet fuel exposure may exert consequences on auditory function that may be more widespread and insidious than what was previously shown. It is possible that a large population of military personnel who are suffering from the effects of jet fuel exposure may be misidentified because they would exhibit normal hearing thresholds but harbor a hidden brainstem dysfunction.
C1 [Guthrie, O'neil W.] Loma Linda Vet Affairs Med Ctr, Res Serv 151, Loma Linda, CA 92357 USA.
[Guthrie, O'neil W.; Xu, Helen] Loma Linda Univ Med Ctr, Sch Med, Dept Otolaryngol Head & Neck Surg, Loma Linda, CA USA.
[Wong, Brian A.; McInturf, Shawn M.; Reboulet, Jim E.; Ortiz, Pedro A.] Naval Med Res Unit Dayton, Wright Patterson AFB, OH USA.
[Mattie, David R.] Air Force Res Lab, Human Effectiveness Directorate, Mol Bioeffects Branch, Bioeffects Div,Human Performance Wing 711,HPW RHD, Wright Patterson AFB, OH USA.
RP Guthrie, OW (reprint author), Loma Linda Vet Affairs Med Ctr, Res Serv 151, 11201 Benton St, Loma Linda, CA 92357 USA.
EM O'neil.Guthrie@va.gov
FU U.S. Air Force Surgeon General (SG5I); Rehabilitation Research and
Development Service of the Office of Research and Development United
States Department of Veterans Affairs-Veterans Health Administration
[CDA-2 (C7600-W)]
FX Support for this research was obtained from the U.S. Air Force Surgeon
General (SG5I) and managed through 711 HPW/RHDJ, Henry Jackson
Foundation for Military Medicine, Loma Linda VA Medical Center, and Navy
work unit number 61062. This work was supported in part by a CDA-2
(C7600-W) Award, from the Rehabilitation Research and Development
Service of the Office of Research and Development United States
Department of Veterans Affairs-Veterans Health Administration. The Loma
Linda VA Medical Center provided facilities for conducting part of the
experiments.
NR 48
TC 7
Z9 7
U1 0
U2 3
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 520 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 1528-7394
EI 1087-2620
J9 J TOXICOL ENV HEAL A
JI J. Toxicol. Env. Health Part A
PD MAR 4
PY 2014
VL 77
IS 5
BP 261
EP 280
DI 10.1080/15287394.2013.862892
PG 20
WC Environmental Sciences; Public, Environmental & Occupational Health;
Toxicology
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Toxicology
GA AB9VZ
UT WOS:000332145100003
PM 24588226
ER
PT J
AU Bartelink, EJ
Willits, NA
Chelotti, KL
AF Bartelink, Eric J.
Willits, Nikki A.
Chelotti, Kristin L.
TI A probable case of acromegaly from the Windmiller culture of prehistoric
Central California
SO INTERNATIONAL JOURNAL OF PALEOPATHOLOGY
LA English
DT Article
DE Acromegaly; Endocrine disorders; Prehistoric California
ID SELLA TURCICA; GIGANTISM; DIAGNOSIS; WEAR
AB A skeleton excavated from the Blossom Mound (CA-SJO-68), a Late Holocene (4350-2980 BP) site located in the northern San Joaquin Valley of California, exhibits evidence of unusual craniofacial and postcranial features consistent with endocrine disease. Burial 37, an adult male approximately 30-40 years of age, shows pronounced development of the mental eminence, glabellar region, and supraorbital arches, as well as elongation of the mandibular ramus, crowding and malocclusion of the anterior dentition, and periosteal bone formation at several enthesis sites. In addition, abnormal enlargement of the sella turcica as well as pneumatization of the frontal and maxillary sinus and mastoid air cells was observed.
These skeletal characteristics are consistent with a diagnosis of acromegaly, an endocrine disorder characterized by the enlargement of bone and soft tissue resulting from a pituitary gland tumor that increases the secretion of growth hormone. Onset typically occurs after epiphyseal fusion, a characteristic that distinguishes it from gigantism. This case study utilizes current clinical criteria for diagnosing acromegaly in human skeletal remains and discusses other evidence of this rare condition in the archeological record. (C) 2013 Elsevier Inc. All rights reserved.
C1 [Bartelink, Eric J.; Chelotti, Kristin L.] Calif State Univ Chico, Dept Anthropol, Chico, CA 95929 USA.
[Willits, Nikki A.] Joint POW MIA Accounting Command Cent Identificat, Hickam AFB, HI 96853 USA.
RP Bartelink, EJ (reprint author), Calif State Univ Chico, Dept Anthropol, 400 West First St, Chico, CA 95929 USA.
EM ebartelink@csuchico.edu
OI Bartelink, Eric/0000-0001-5050-4088
NR 60
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1879-9817
EI 1879-9825
J9 INT J PALEOPATHOL
JI Int. J. Paleopathol.
PD MAR
PY 2014
VL 4
BP 37
EP 46
DI 10.1016/j.ijpp.2013.11.003
PG 10
WC Paleontology; Pathology
SC Paleontology; Pathology
GA AT2PN
UT WOS:000344776800004
ER
PT J
AU Goodwin, DJ
Mazurek, GH
Campbell, BH
Bohanon, J
West, KB
Bell, JJ
Powell, R
Toney, S
Morris, JA
Yamane, GK
Sjoberg, PA
AF Goodwin, Donald J.
Mazurek, Gerald H.
Campbell, Brandon H.
Bohanon, Jamaria
West, Kevin B.
Bell, James J.
Powell, Richard
Toney, Sean
Morris, John A.
Yamane, Grover K.
Sjoberg, Paul A.
TI Automation of an Interferon-gamma Release Assay and Comparison to the
Tuberculin Skin Test for Screening Basic Military Trainees for
Mycobacterium tuberculosis Infection
SO MILITARY MEDICINE
LA English
DT Article
ID UNITED-STATES; CROSS-REACTIVITY; HOMOLOG; PROTEIN; LEPRAE; HEALTH
AB We automated portions of the QuantiFERON-TB Gold In-Tube test (QFT-GIT) and assessed its quality when performed concurrently with the tuberculin skin test (TST) among U.S. Air Force basic military trainees (BMTs). The volume of blood collected for QFT-GIT was monitored. At least one of the three tubes required for QFT-GIT had blood volume outside the recommended 0.8- to 1.2-mL range for 688 (29.0%) of 2,373 subjects who had their blood collected. Of the 2,124 subjects who had TST and QFT-GIT completed, TST was positive for 0.6%; QFT-GIT was positive for 0.3% and indeterminate for 2.0%. Among 2,081 subjects with completed TST and determinate QFT-GIT results, overall agreement was 99.5% but positive agreement was 5.6%. Specificity among the 1,546 low-risk BMTs was identical (99.7%). Indeterminate QFT-GIT results were 2.7 times more likely when mitogen tubes contained >1.2 mL blood than when containing 0.8- to 1.2-mL blood. Automation can facilitate QFT-GIT completion, especially if the recommended volume of blood is collected. Mycobacterium tuberculosis infection prevalence among BMTs based on TST and QFT-GIT is similar and low. Selectively testing those with significant risk may be more appropriate than universal testing of all recruits.
C1 [Goodwin, Donald J.; Bohanon, Jamaria; Bell, James J.; Yamane, Grover K.; Sjoberg, Paul A.] US Air Force, Sch Aerosp Med, Epidemiol Consult Serv, Wright Patterson AFB, OH 45433 USA.
[Mazurek, Gerald H.; Campbell, Brandon H.; Powell, Richard; Toney, Sean] Ctr Dis Control & Prevent CDC, Div TB Eliminat, Atlanta, GA 30333 USA.
[West, Kevin B.] Wilford Hall USAF Med Ctr, Reid Clin, Dept Occupat Med TB Prevent Deployment Med, Lackland AFB, TX 78236 USA.
[Morris, John A.] Grifols USA LLC, Div Diagnost, Doral, FL 33172 USA.
RP Goodwin, DJ (reprint author), US Air Force, Sch Aerosp Med, Epidemiol Consult Serv, 2510 Fifth St,Bldg 840,W318K, Wright Patterson AFB, OH 45433 USA.
FU USAF
FX The USAF provided funding for the study. The USAF also provided access
to USAF BMTs while undergoing medical assessment at Reid Clinic; office
and laboratory space; and administrative, laboratory, computer, and
staff support through USAFSAM's Epidemiology Consult Services. CDC and
the CDC Foundation provided technical expertise, procedure manuals,
training and oversight of study staff, and computer programming support.
Grifols USA provided two Triturus automated ELISA workstations for use
in the trial, as well as maintenance and staff training during the
trial. At the completion of the trial, the Triturus instruments were
returned to Grifols USA. Cellestis provided the QuantiFERON-TB Gold
In-Tube kits used in the trial. Cooperative Research and Development
Agreements facilitated sharing of equipment, materials, and findings.
The USAF and CDC retained control of the study, data, analyses, and
results dissemination.
NR 19
TC 2
Z9 2
U1 0
U2 1
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD MAR
PY 2014
VL 179
IS 3
BP 333
EP 341
DI 10.7205/MILMED-D-13-00364
PG 9
WC Medicine, General & Internal
SC General & Internal Medicine
GA AN7UJ
UT WOS:000340806200021
PM 24594471
ER
PT J
AU Vernizzi, G
Lanzerotti, MY
Kujawski, J
Weatherwax, A
AF Vernizzi, G.
Lanzerotti, M. Y.
Kujawski, J.
Weatherwax, A.
TI Topological constraints for E. F. Rent's work on microminiature
packaging and circuitry
SO IBM JOURNAL OF RESEARCH AND DEVELOPMENT
LA English
DT Article
ID COMPUTER LOGIC; VLSI CIRCUITS; DESIGN; INTERCONNECTIONS; ALGORITHM;
MODELS; RULE; ICS
AB Because of the wide impact of Mr. E. F. Rent's work in engineering, the applied sciences, and technology, the original memos of Mr. Rent and historically equivalent (HE) applications to today's complex integrated circuitry were published in the IBM Journal of Research and Development in 2005. It has been shown that evaluating existing wirelength distribution models with this HE interpretation of Rent's memos provides improved qualitative agreement with measurements and more accurate estimates of on-chip wirelength requirements for application-specific integrated circuit designs in the POWER4 (TM) microprocessor core. Because of the increasing impact of Rent's work, including research on integration density for future computers and expansion to the fields of post-CMOS devices and bioengineering, this paper presents a review of these contributions and a new mathematical framework that explains the HE interpretation of Rent's memos. This framework provides topological constraints for today's ultralarge-scale integrated circuits, as well as a model that predicts this HE interpretation. The model arises from the underlying topology of the circuitry and interconnectivity of the circuit components. Using this model, predictions of the HE Rent parameters are obtained and show agreement to within -5% to +12% of the experimental values obtained from published data for the POWER4 (TM) microprocessor circuit designs.
C1 [Vernizzi, G.; Kujawski, J.] Siena Coll, Dept Phys, Loudonville, NY 12211 USA.
[Lanzerotti, M. Y.] US Air Force, Inst Technol, Dept Elect & Comp Engn, Wright Patterson AFB, OH 45433 USA.
[Weatherwax, A.] Siena Coll, Sch Sci, Loudonville, NY 12211 USA.
RP Vernizzi, G (reprint author), Siena Coll, Dept Phys, Loudonville, NY 12211 USA.
EM gvernizzi@siena.edu; mary.lanzerotti@afit.edu; jkujawski@siena.edu;
aweatherwax@siena.edu
FU AFIT Faculty Research Council; National Science Foundation; Air Force
Office of Scientific Research; Air Force Research Laboratory Sensors
Directorate
FX We thank the reviewers for their thoughtful comments and suggestions,
which strengthened the manuscript. M. Lanzerotti acknowledges research
support from two AFIT Faculty Research Council startup competitions,
National Science Foundation, Air Force Office of Scientific Research,
and Air Force Research Laboratory Sensors Directorate. She also thanks
A. C. Parker at the University of Southern California for correspondence
and Elizabeth Hiteshue at the University of Pennsylvania for feedback on
the manuscript.
NR 74
TC 1
Z9 1
U1 2
U2 6
PU IBM CORP
PI ARMONK
PA 1 NEW ORCHARD ROAD, ARMONK, NY 10504 USA
SN 0018-8646
EI 2151-8556
J9 IBM J RES DEV
JI IBM J. Res. Dev.
PD MAR-MAY
PY 2014
VL 58
IS 2-3
DI 10.1147/JRD.2014.2307225
PG 17
WC Computer Science, Hardware & Architecture; Computer Science, Information
Systems; Computer Science, Software Engineering; Computer Science,
Theory & Methods
SC Computer Science
GA AM5FU
UT WOS:000339883000014
ER
PT J
AU Torres, A
Ganley, J
Maji, A
Tucker, D
Starodubov, D
AF Torres, Anthony
Ganley, Jeff
Maji, Arup
Tucker, Dennis
Starodubov, Dmitry
TI Increasing the working temperature range of ZrF4-BaF2-LaF3-AlF3-NaF
glass through microgravity processing
SO OPTICAL ENGINEERING
LA English
DT Article
DE ZrF4-BaF2-LaF3-AlF3-NaF; microgravity; hyper-g; crystallization; working
temperature; fluorozirconate glasses; optical microscopy; differential
scanning calorimetry
ID GRAVITY; CRYSTALLIZATION
AB Fluorozirconate glasses, such as ZBLAN (ZrF4-BaF2-LaF3-AlF3-NaF), have the potential for optical transmission from 0.3 mu m in the ultraviolet to 7 mu m in the infrared regions. However, crystallites formed during the fiber-drawing process prevent this glass from achieving its desired transmission range. The temperature at which the glass can be drawn into a fiber is known as the working range, defined as (Tx-Tg), bounded by the glass transition temperature (Tg) and the crystallization temperature (Tx). In contrast to silica glasses, the working temperature range for ZBLAN glass is extremely narrow. Multiple ZBLAN samples were subjected to a heating and quenching test apparatus on the parabolic aircraft under a controlled mu-g and hyper-g environments and compared with 1-g ground tests. Optical microscopy examination elucidates that crystal growth in ZBLAN is suppressed and initiates at a later temperature when processed in a microgravity environment. Thus, the crystallization temperature, Tx, at which the crystals form has increased. The glass transition temperature, Tg, remains constant, as crystallization does not occur until approximately 360 degrees C for this composition of ZBLAN. Therefore, the working temperature range for ZBLAN has been broadened. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
C1 [Torres, Anthony] Texas State Univ, Dept Engn Technol, San Marcos, TX 78666 USA.
[Ganley, Jeff] Air Force Res Lab, Space Vehicles Directorate, Albuquerque, NM 87117 USA.
[Maji, Arup] Univ New Mexico, Dept Civil Engn, Albuquerque, NM 87106 USA.
[Tucker, Dennis] NASA MSFC, Huntsville, AL 35812 USA.
[Starodubov, Dmitry] Phys Opt Corp, Torrance, CA 90501 USA.
RP Torres, A (reprint author), Texas State Univ, Dept Engn Technol, San Marcos, TX 78666 USA.
EM ast36@txstate.edu
NR 9
TC 4
Z9 4
U1 0
U2 2
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
EI 1560-2303
J9 OPT ENG
JI Opt. Eng.
PD MAR
PY 2014
VL 53
IS 3
AR 036103
DI 10.1117/1.OE.53.3.036103
PG 9
WC Optics
SC Optics
GA AM1QT
UT WOS:000339623600033
ER
PT J
AU Kalyanam, K
Park, M
Darbha, S
Casbeer, D
Chandler, P
Pachter, M
AF Kalyanam, Krishnamoorthy
Park, Myoungkuk
Darbha, Swaroop
Casbeer, David
Chandler, Phil
Pachter, Meir
TI Lower Bounding Linear Program for the Perimeter Patrol Optimization
Problem
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article; Proceedings Paper
CT Infotech at Aerospace Conference
CY JUN 19-21, 2012
CL Garden Grove, CA
ID MARKOV DECISION CHAINS; STATE AGGREGATION; SYSTEMS
AB In this article, a stochastic optimal control problem involving an unmanned aerial vehicle flying patrols around a perimeter is considered. To determine the optimal control policy, one has to solve a Markov decision problem, whose large size renders exact dynamic programming methods intractable. Therefore, a state aggregation based approximate linear programming method is used instead, to construct provably good suboptimal patrol policies. The state space is partitioned and the optimal cost-to-go or value function is restricted to be a constant over each partition. The resulting restricted system of linear inequalities embeds a family of Markov chains of lower dimension, one of which can be used to construct a lower bound on the optimal value function. In general, the construction of a lower bound requires the solution to a combinatorial problem. But the perimeter patrol problem exhibits a special structure that enables tractable linear programming formulation for the lower bound. This is demonstrated and numerical results that corroborate the efficacy of the proposed methodology are also provided.
C1 [Kalyanam, Krishnamoorthy] Infoscitex Corp, Dayton, OH 45431 USA.
[Park, Myoungkuk; Darbha, Swaroop] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA.
[Casbeer, David; Chandler, Phil] US Air Force Res Lab, Control Automat Branch, Wright Patterson AFB, OH 45433 USA.
[Pachter, Meir] US Air Force Inst Technol, Dept Elect Engn, Wright Patterson AFB, OH 45433 USA.
RP Kalyanam, K (reprint author), Infoscitex Corp, Dayton, OH 45431 USA.
EM krishnak@ucla.edu
NR 29
TC 2
Z9 2
U1 1
U2 3
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
EI 1533-3884
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD MAR-APR
PY 2014
VL 37
IS 2
BP 558
EP 565
DI 10.2514/1.60487
PG 8
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA AI3OX
UT WOS:000336772900017
ER
PT J
AU Bhatia, M
Patil, M
Woolsey, C
Stanford, B
Beran, P
AF Bhatia, Manav
Patil, Mayuresh
Woolsey, Craig
Stanford, Bret
Beran, Philip
TI Stabilization of Flapping-Wing Micro-Air Vehicles in Gust Environments
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article; Proceedings Paper
CT AIAA Atmospheric Flight Mechanics Conference
CY AUG 13-16, 2012
CL Minneapolis, MN
SP AIAA
ID DYNAMICS; OPTIMIZATION; KINEMATICS; STABILITY; DESIGN; FLIGHT; HOVER
AB This study presents an approach to develop a controller for stabilization of a flapping-wing micro-air vehicle operating in gusty environments. The rigid-wing micro-air vehicle is modeled as a nonlinear periodic system and the periodic shooting method is used to find a trimmed periodic orbit. A linearized discrete-time representation of the system is created about this trimmed periodic orbit. This linearized representation is used for control synthesis based on linear quadratic regulator theory. The kinematic variables defining the wing motion are used as control inputs. The controller is implemented on the nonlinear system model to stabilize the system in the presence of external disturbances, modeled as discrete gusts in this study. The performance of the controller in terms of the gust speed tolerance of the nonlinear, closed-loop system is compared for different sets of controller parameters. The linear quadratic regulator based controller is capable of stabilizing the system under both longitudinal and lateral gust disturbances; however, the maximum gust speed that can be tolerated by a given controller is influenced by a variety of parameters, as discussed in the paper. Numerical simulations show that tolerance of longitudinal gusts is far higher than lateral gust tolerance. The study also shows that lateral control of the micro-air vehicle can be achieved using only the wing-stroke magnitude and wing-stroke offset as the control inputs for each wing.
C1 [Bhatia, Manav; Patil, Mayuresh; Woolsey, Craig] Virginia Polytech Inst & State Univ, Dept Aerosp & Ocean Engn, Blacksburg, VA 24061 USA.
[Stanford, Bret] US Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Beran, Philip] US Air Force Res Lab, AFRL, Wright Patterson AFB, OH 45433 USA.
RP Bhatia, M (reprint author), United Technol Corp, Hartford, CT 06103 USA.
EM manav.bhatia.ctr@wpafb.af.mil; mpatil@vt.edu; cwoolsey@vt.edu;
bret.stanford.ctr@wpafb.af.mil; philip.beran@wpatb.af.mil
RI Patil, Mayuresh/E-4644-2013;
OI Patil, Mayuresh/0000-0001-9601-2249; Woolsey, Craig/0000-0003-3483-7135
NR 23
TC 2
Z9 2
U1 0
U2 7
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
EI 1533-3884
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD MAR-APR
PY 2014
VL 37
IS 2
BP 592
EP 607
DI 10.2514/1.59875
PG 16
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA AI3OX
UT WOS:000336772900020
ER
PT J
AU Holzinger, MJ
Scheeres, DJ
Erwin, RS
AF Holzinger, Marcus J.
Scheeres, Daniel J.
Erwin, R. Scott
TI On-Orbit Operational Range Computation Using Gauss's Variational
Equations with J(2) Perturbations
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article; Proceedings Paper
CT 21st AAS/AIAA Space Flight Mechanics Meeting
CY FEB 13-17, 2011
CL New Orleans, LA
SP AAS, AIAA
ID VISCOSITY SOLUTIONS; REACHABLE DOMAIN; INTERCEPTION; IMPULSE; SETS
AB Aircraft operational range, the distance an aircraft can travel with a fixed quantity of fuel, is an intuitive measure that provides strategic and tactical insight to the end user. Currently, there is no rigorously defined and derived operational range measure for on-orbit spacecraft operations with which to inform strategic decisions and planning. This paper illustrates how operational range may be computed in the context of orbital motion using optimal control theory and how existing results in reachability set computation may be leveraged. The solution method presented incidentally solves the free-time minimum-impulse full orbit-element transfer problem under J(2) perturbations. The derived optimal control policy reproduces known optimal free-time minimum Delta nu basis maneuvers. The methodology presented is shown to have the capability to exactly capture the minimum-fuel free-time operational range volumes, although numerical solution algorithm errors persist. The approach is validated using known minimum-fuel optimal maneuvers, and numerical examples of on-orbit operational range for low Earth orbits, geostationary transfer orbits, and geostationary Earth orbits are given. Applications to spacecraft operations are detailed.
C1 [Holzinger, Marcus J.; Scheeres, Daniel J.] Univ Colorado, Boulder, CO 80309 USA.
[Erwin, R. Scott] US Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Holzinger, MJ (reprint author), Georgia Inst Technol, Sch Aerosp Engn, Atlanta, GA 30332 USA.
NR 24
TC 3
Z9 4
U1 2
U2 6
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
EI 1533-3884
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD MAR-APR
PY 2014
VL 37
IS 2
BP 608
EP 622
DI 10.2514/1.53861
PG 15
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA AI3OX
UT WOS:000336772900021
ER
PT J
AU Sorokulova, I
Olsen, E
Vodyanoy, V
AF Sorokulova, Irina
Olsen, Eric
Vodyanoy, Vitaly
TI Bacteriophage biosensors for antibiotic-resistant bacteria
SO EXPERT REVIEW OF MEDICAL DEVICES
LA English
DT Review
DE detection; filamentous; lytic; monolayers; reporter phages; spheroids
ID SURFACE-PLASMON RESONANCE; IMMOBILIZED MAGNETOELASTIC SENSOR;
SALMONELLA-TYPHIMURIUM; STAPHYLOCOCCUS-AUREUS; BACILLUS-ANTHRACIS;
GAMMA-PHAGE; MYCOBACTERIUM-TUBERCULOSIS; FILAMENTOUS BACTERIOPHAGE;
ACINETOBACTER-BAUMANNII; METHICILLIN-RESISTANT
AB An increasing number of disease-causing bacteria are resistant to one or more anti-bacterial drugs utilized for therapy. Early and speedy detection of these pathogens is therefore very important. Traditional pathogen detection techniques, that include microbiological and biochemical assays are long and labor-intensive, while antibody or DNA-based methods require substantial sample preparation and purification. Biosensors based on bacteriophages have demonstrated remarkable potential to surmount these restrictions and to offer rapid, efficient and sensitive detection technique for antibiotic-resistant bacteria.
C1 [Sorokulova, Irina; Vodyanoy, Vitaly] Dept Anat Physiol & Pharmacol, Auburn, AL 36849 USA.
[Olsen, Eric] US Air Force, Sch Aerosp Med, Epidemiol Lab, Wright Patterson AFB, OH 45433 USA.
RP Vodyanoy, V (reprint author), Dept Anat Physiol & Pharmacol, Auburn, AL 36849 USA.
EM vodyavi@auburn.edu
NR 68
TC 3
Z9 3
U1 12
U2 43
PU EXPERT REVIEWS
PI LONDON
PA UNITEC HOUSE, 3RD FL, 2 ALBERT PLACE, FINCHLEY CENTRAL, LONDON N3 1QB,
ENGLAND
SN 1743-4440
EI 1745-2422
J9 EXPERT REV MED DEVIC
JI Expert Rev. Med. Devices
PD MAR
PY 2014
VL 11
IS 2
BP 175
EP 186
DI 10.1586/17434440.2014.882767
PG 12
WC Engineering, Biomedical
SC Engineering
GA AG3MS
UT WOS:000335324000009
PM 24506300
ER
PT J
AU Stephan, CN
Amidan, B
Trease, H
Guyomarc'h, P
Pulsipher, T
Byrd, JE
AF Stephan, Carl N.
Amidan, Brett
Trease, Harold
Guyomarc'h, Pierre
Pulsipher, Trenton
Byrd, John E.
TI Morphometric Comparison of Clavicle Outlines from 3D Bone Scans and 2D
Chest Radiographs: A Shortlisting Tool to Assist Radiographic
Identification of Human Skeletons
SO JOURNAL OF FORENSIC SCIENCES
LA English
DT Article
DE forensic science; forensic anthropology; elliptical Fourier analysis;
geometric morphometrics; radiograph; X-ray; skeletal identification;
computer-assisted
ID FRONTAL SINUSES; HUMAN REMAINS; POSITIVE IDENTIFICATION; RELIABILITY;
ACCURACY
AB This paper describes a computerized clavicle identification system primarily designed to resolve the identities of unaccounted-for U.S. soldiers who fought in the Korean War. Elliptical Fourier analysis is used to quantify the clavicle outline shape from skeletons and postero-anterior antemortem chest radiographs to rank individuals in terms of metric distance. Similar to leading fingerprint identification systems, shortlists of the top matching candidates are extracted for subsequent human visual assessment. Two independent tests of the computerized system using 17 field-recovered skeletons and 409 chest radiographs demonstrate that true-positive matches are captured within the top 5% of the sample 75% of the time. These results are outstanding given the eroded state of some field-recovered skeletons and the faintness of the 1950's photofluorographs. These methods enhance the capability to resolve several hundred cold cases for which little circumstantial information exists and current DNA and dental record technologies cannot be applied.
C1 [Stephan, Carl N.; Guyomarc'h, Pierre; Byrd, John E.] Cent Identificat Lab, Joint POW MIA Accounting Command, Hickam AFB, HI 96853 USA.
[Amidan, Brett; Trease, Harold; Pulsipher, Trenton] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Stephan, CN (reprint author), Univ Queensland, Sch Biomed Sci, St Lucia, Qld 4072, Australia.
EM c.stephan@uq.edu.au
RI Stephan, Carl/A-8176-2015;
OI Stephan, Carl/0000-0001-8696-3809; Guyomarc'h,
Pierre/0000-0002-9419-9270
FU U.S. Department of Energy; JPAC-CIL
FX Presented in part at the 65th Annual Scientific Meeting of the American
Academy of Forensic Sciences, February 18-23, 2013, in Washington, DC.
Supported in part by two appointments to the Postgraduate Research
Participation Program at the Joint POW/MIA Accounting Command-Central
Identification Laboratory, administered by the Oak Ridge Institute for
Science and Education through an interagency agreement between the U.S.
Department of Energy and the JPAC-CIL.
NR 48
TC 5
Z9 5
U1 3
U2 13
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0022-1198
EI 1556-4029
J9 J FORENSIC SCI
JI J. Forensic Sci.
PD MAR
PY 2014
VL 59
IS 2
BP 306
EP 313
DI 10.1111/1556-4029.12324
PG 8
WC Medicine, Legal
SC Legal Medicine
GA AC2DL
UT WOS:000332307900002
PM 24313347
ER
PT J
AU Stephan, CN
Guyomarc'h, P
AF Stephan, Carl N.
Guyomarc'h, Pierre
TI Quantification of Perspective-Induced Shape Change of Clavicles at
Radiography and 3D Scanning to Assist Human Identification
SO JOURNAL OF FORENSIC SCIENCES
LA English
DT Article
DE forensic science; forensic anthropology; geometric morphometrics;
deformation grid; X-ray; distortion; perspective
AB Change in perspective between antemortem and postmortem imaging sessions (radiograph to radiograph and surface scan to radiograph) may cause different 2D renderings of the same osseous element complicating comparisons for identification. In this study, clavicle shape changes due to radiographic positioning and 3D laser scanning were examined in 20 right-side specimens, as pertinent to chest radiograph comparisons. Results indicate substantial changes in clavicle form with short source-to-image receptor distance, elevation of the element from the image receptor, and movement of the element away from the center beam (10% mean square for shape). Although quantitative shape differences were small when the clavicle was in close opposition to the image receptor (3% mean square), important qualitative differences remained with large distances from the center beam (e.g., conoid tubercle presence/absence). The significance of these results for image superimposition and computer-automated-shape-based searches of radiographic libraries to find matching candidates is discussed.
C1 [Stephan, Carl N.; Guyomarc'h, Pierre] Joint POW MIA Accounting Command, Cent Identificat Lab, Hickam AFB, HI 96853 USA.
[Stephan, Carl N.] Univ Queensland, Sch Biomed Sci, Brisbane, Qld 4072, Australia.
RP Stephan, CN (reprint author), Univ Queensland, Sch Biomed Sci, St Lucia, Qld 4072, Australia.
EM c.stephan@uq.edu.au
RI Stephan, Carl/A-8176-2015;
OI Stephan, Carl/0000-0001-8696-3809; Guyomarc'h,
Pierre/0000-0002-9419-9270
FU U.S. Department of Energy; JPAC-CIL
FX Supported, in part, by two appointments to the Postgraduate Research
Participation Program at the Joint POW/MIA Accounting Command-Central
Identification Laboratory, administered by the Oak Ridge Institute for
Science and Education through an interagency agreement between the U.S.
Department of Energy and the JPAC-CIL.
NR 24
TC 0
Z9 0
U1 1
U2 1
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0022-1198
EI 1556-4029
J9 J FORENSIC SCI
JI J. Forensic Sci.
PD MAR
PY 2014
VL 59
IS 2
BP 447
EP 453
DI 10.1111/1556-4029.12325
PG 7
WC Medicine, Legal
SC Legal Medicine
GA AC2DL
UT WOS:000332307900022
PM 24313366
ER
PT J
AU Hysell, DL
Miceli, RJ
Kendall, EA
Schlatter, NM
Varney, RH
Watkins, BJ
Pedersen, TR
Bernhardt, PA
Huba, JD
AF Hysell, D. L.
Miceli, R. J.
Kendall, E. A.
Schlatter, N. M.
Varney, R. H.
Watkins, B. J.
Pedersen, T. R.
Bernhardt, P. A.
Huba, J. D.
TI Heater-induced ionization inferred from spectrometric airglow
measurements
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID IONOSPHERE HEATING EXPERIMENTS; PUMP ENHANCED AIRGLOW; GROSS EARTH DATA;
CROSS-SECTIONS; F-REGION; ELECTRONS; FREQUENCY; PLASMA; MODEL
AB Spectrographic airglow measurements were made during an ionospheric modification experiment at High Frequency Active Auroral Research Program on 12 March 2013. Artificial airglow enhancements at 427.8, 557.7, 630.0, 777.4, and 844.6 nm were observed. On the basis of these emissions and using a methodology based on the method of Backus and Gilbert (1968, 1970), we estimate the suprathermal electron population and the subsequent equilibrium electron density profile, including contributions from electron impact ionization. We find that the airglow is consistent with heater-induced ionization in view of the spatial intermittency of the airglow.
C1 [Hysell, D. L.; Miceli, R. J.] Cornell Univ, Ithaca, NY 14853 USA.
[Kendall, E. A.] SRI Int, Menlo Pk, CA USA.
[Schlatter, N. M.] Royal Inst Technol Stockholm, Sch Elect Engn, Stockholm, Sweden.
[Varney, R. H.] HAO NCAR, Boulder, CO USA.
[Watkins, B. J.] Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA.
[Pedersen, T. R.] Air Force Res Lab, Space Vehicles Directorate, Albuquerque, NM USA.
[Bernhardt, P. A.; Huba, J. D.] Naval Res Lab, Plasma Phys Div, Washington, DC USA.
RP Hysell, DL (reprint author), Cornell Univ, Ithaca, NY 14853 USA.
EM dlh37@cornell.edu
OI Varney, Roger/0000-0002-5976-2638; /0000-0001-6802-1842
FU DARPA [HR0011-09-C-0099]; High Frequency Active Auroral Research Program
(HAARP); Office of Naval Research; Air Force Research Laboratory
[N00014-07-1-1079]; Air Force Office of Scientific Research; NRL Base
Funds; NASA Living With a Star Jack Eddy Postdoctoral Fellowship
program; National Science Foundation
FX This project was supported by DARPA through contract HR0011-09-C-0099.
Additional support came from the High Frequency Active Auroral Research
Program (HAARP) and from the Office of Naval Research and the Air Force
Research Laboratory under grant N00014-07-1-1079 to Cornell. Work at
AFRL was supported by the Air Force Office of Scientific Research. The
research of J.D.H. was supported by NRL Base Funds. R. H. V. is
supported by the NASA Living With a Star Jack Eddy Postdoctoral
Fellowship program, administered by the University Corporation for
Atmospheric Research. The National Center for Atmospheric Research is
sponsored by the National Science Foundation. The Gakona Digisonde is
operated by AFRL, and the data are available at the Lowell GIRO Data
Center. Ivan Galkin at the University of Massachusetts Lowell assisted
with the Digisonde data interpretation.
NR 32
TC 3
Z9 3
U1 0
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD MAR
PY 2014
VL 119
IS 3
BP 2038
EP 2045
DI 10.1002/2013JA019663
PG 8
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AH6CM
UT WOS:000336218300049
ER
PT J
AU Liu, X
Thayer, JP
Burns, A
Wang, W
Sutton, E
AF Liu, X.
Thayer, J. P.
Burns, A.
Wang, W.
Sutton, E.
TI Altitude variations in the thermosphere mass density response to
geomagnetic activity during the recent solar minimum
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID SEVERE MAGNETIC STORM; UPPER-ATMOSPHERE; NEUTRAL-ATMOSPHERE;
PERTURBATIONS; CLIMATOLOGY; SATELLITES; HELIUM; CHAMP
AB Accelerometer data from coplanar orbits of Challenging Minisatellite Payload (CHAMP) and Gravity Recovery and Climate Experiment (GRACE) satellites were used to study the complex altitude and latitude variations of the thermosphere mass density response to geomagnetic activity during 1-10 December 2008 near 09 LT. Helium number densities near 500km altitude were extracted from the CHAMP and GRACE measurements and clearly show the presence of a winter hemisphere helium bulge. This recent extreme solar minimum indicates that wintertime helium concentrations exceed NRLMSISE-00 model estimates by 30%-70% during quiet geomagnetic activity after adjusting F-10.7 input into MSIS. The perturbation in mass density from quiet to active conditions is found to be less enhanced in the winter hemisphere at the higher GRACE altitudes (25%) than at the lower CHAMP altitudes (60%) and is attributed to dynamic behavior in the helium/oxygen transition. The investigation revealed the maximum storm time density perturbation to occur near the He/O transition region with a much weaker maximum near the O/N-2 transition region. The altitude of maximum density perturbation occurs where the perturbation in the weighted pressure scale height is equal and opposite to the perturbation in the weightedmeanmolecular weight scale height. The altitude structure of density scale height perturbation is significantly influenced by the changes in the molecular weight scale height and can account for 50% of the change in mass density scale height in a region correspondingly close to the He/O transition during the 2008 solar minimum period.
C1 [Liu, X.; Thayer, J. P.] Univ Colorado, Dept Aerosp Engn Sci, Boulder, CO 80309 USA.
[Burns, A.; Wang, W.] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
[Sutton, E.] Air Force Res Lab, Albuquerque, NM USA.
RP Liu, X (reprint author), Univ Colorado, Dept Aerosp Engn Sci, Boulder, CO 80309 USA.
EM xianjing@colorado.edu
RI Wang, Wenbin/G-2596-2013; THAYER, JEFFREY P./B-7264-2016; Sutton,
Eric/A-1574-2016
OI Wang, Wenbin/0000-0002-6287-4542; THAYER, JEFFREY
P./0000-0001-7127-8251; Sutton, Eric/0000-0003-1424-7189
FU NASA [NNX10AE62G, 123719, 123314, NNX08AH37I, NNX12AJ54G]; AFOSR MURI
[FA9550-07-1-0565]; National Science Foundation; NASA LWS [NNX13AE20G,
NNX10AQ59G]
FX This work was supported by NASA grant NNX10AE62G and AFOSR MURI award
FA9550-07-1-0565. A. Burns was supported by NASA grant 123719 from the
GI program and 123314 from the LWS TR&T program. W. Wang was supported
by NASA grants NNX08AH37I and NNX12AJ54G from the NASA Guest
Investigator Program, and NASA LWS grants NNX13AE20G and NNX10AQ59G.
NCAR is sponsored by the National Science Foundation. Helpful
discussions with Jiuhou Lei improved the quality of this paper. We would
like to thank the CHAMP and GRACE missions for providing ready access to
the density data set.
NR 50
TC 9
Z9 9
U1 2
U2 10
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD MAR
PY 2014
VL 119
IS 3
BP 2160
EP 2177
DI 10.1002/2013JA019453
PG 18
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AH6CM
UT WOS:000336218300060
ER
PT J
AU Frey, WR
Lin, CS
Garvin, MB
Acebal, AO
AF Frey, W. R.
Lin, C. S.
Garvin, M. B.
Acebal, A. O.
TI Modeling the thermosphere as a driven-dissipative thermodynamic system
SO SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
LA English
DT Article
DE Thermosphere; Geomagnetic Storm; Satellite Drag
ID DENSITIES; STORMS
AB Thermospheric density impacts satellite position and lifetime through atmospheric drag. More accurate specification of thermospheric temperature, a key input to current models such as the High Accuracy Satellite Drag Model, can decrease model density errors. This paper improves the model of Burke et al. () to model thermospheric temperatures using the magnetospheric convective electric field as a driver. In better alignment with Air Force satellite tracking operations, we model the arithmetic mean temperature, T-1/2, defined by the Jacchia () model as the mean of the daytime maximum and nighttime minimum exospheric temperatures occurring in opposite hemispheres at a given time, instead of the exospheric temperature used by Burke et al. (). Two methods of treating the solar ultraviolet (UV) contribution to T-1/2 are tested. Two model parameters, the coupling and relaxation constants, are optimized for 38 storms from 2002 to 2008. Observed T-1/2 values are derived from densities and heights measured by the Gravity Recovery and Climate Experiment satellite. The coupling and relaxation constants were found to vary over the solar cycle and are fit as functions of F-10.7a, the 162day average of the F-10.7 index. Model results show that allowing temporal UV variation decreased model T-1/2 errors for storms with decreasing UV over the storm period but increased T-1/2 errors for storms with increasing UV. Model accuracy was found to be improved by separating storms by type (coronal mass ejection or co-rotating interaction region). The model parameter fits established will be useful for improving satellite drag forecasts.
Key Points
Thermospheric temperatures are modeled with solar UV and solar wind inputs Modified model produces lower temperature errors than that of Burke, 2011 Model parameters are determined as functions of the F10.7 solar UV proxy
C1 [Frey, W. R.] Air Force Weather Agcy, Offutt Air Force Base, Bellevue, NE USA.
[Frey, W. R.; Garvin, M. B.; Acebal, A. O.] Air Force Inst Technol, Wright Patterson Air Force Base, Dept Engn Phys, Dayton, OH USA.
[Lin, C. S.] Kirtland Air Force Base, Air Force Res Lab, Space Vehicles Directorate, Albuquerque, NM USA.
RP Frey, WR (reprint author), Air Force Weather Agcy, Offutt Air Force Base, Bellevue, NE USA.
EM billfrey35@gmail.com
FU Air Force Institute of Technology
FX W. Frey was sponsored by the Air Force Institute of Technology. W. Frey
is currently the Air Force Weather Agency's Liaison Officer to the
National Oceanic and Atmospheric Administration's Space Weather
Prediction Center. The authors would like to thank E. K. Sutton for
providing the GRACE neutral density data and NASA's OMNIWeb for the use
of their ACE solar wind data. The views expressed in this article are
those of the authors and do not necessarily reflect the official policy
or position of the Air Force, the Department of Defense, or the U.S.
Government.
NR 34
TC 1
Z9 1
U1 0
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1542-7390
J9 SPACE WEATHER
JI Space Weather
PD MAR
PY 2014
VL 12
IS 3
BP 132
EP 142
DI 10.1002/2013SW001014
PG 11
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
GA AE1PO
UT WOS:000333741700005
ER
PT J
AU Helton, WS
Funke, GJ
Knott, BA
AF Helton, William S.
Funke, Gregory J.
Knott, Benjamin A.
TI Measuring Workload in Collaborative Contexts: Trait Versus State
Perspectives
SO HUMAN FACTORS
LA English
DT Article
ID SUBJECTIVE WORKLOAD; PERFORMANCE; VIGILANCE; STRESS
C1 [Helton, William S.] Univ Canterbury, Christchurch 8140, New Zealand.
[Funke, Gregory J.; Knott, Benjamin A.] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Helton, WS (reprint author), Univ Canterbury, Dept Psychol, Private Bag 4800, Christchurch 8140, New Zealand.
EM Deak.Helton@canterbury.ac.nz
NR 33
TC 10
Z9 10
U1 2
U2 6
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0018-7208
EI 1547-8181
J9 HUM FACTORS
JI Hum. Factors
PD MAR
PY 2014
VL 56
IS 2
BP 322
EP 332
PG 11
WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology,
Applied; Psychology
SC Behavioral Sciences; Engineering; Psychology
GA AA8TS
UT WOS:000331368500006
PM 24689251
ER
PT J
AU Haugan, HJ
Brown, GJ
Mahalingam, K
Grazulis, L
Noe, GT
Ogden, NE
Kono, J
AF Haugan, Heather J.
Brown, Gail J.
Mahalingam, Krishnamurthy
Grazulis, Larry
Noe, Gary T.
Ogden, Nathan E.
Kono, Junichiro
TI Optimum growth window for InAs/GaInSb superlattice materials tailored
for very long wavelength infrared detection
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID PHOTOVOLTAIC DETECTORS; MU-M; HETEROSTRUCTURES; PHOTODIODES; CUTOFF
AB The authors report growth studies to develop an InAs/GaInSb superlattice (SL) material for very long wavelength infrared detection. They select a SL structure of 47.0 angstrom InAs/21.5 angstrom Ga0.75In0.25Sb that is designed for the greatest possible detectivity, and tune growth conditions to achieve the best quality ternary material. Since the material quality of grown layers is particularly sensitive to extrinsic defects such as nonradiative recombination centers generated during the growth process, the authors investigate the effect of the growth temperature (T-g) on the spectral photoresponse (PR) and carrier recombination lifetime using photoconductivity and time-resolved differential reflectivity measurements. Results indicate that a molecular beam epitaxy growth process the authors developed produces a consistent energy gap around 50 meV, determined from the PR spectra, but the intensity of the spectra is sensitive to T-g. For SLs grown at T-g between 390 and 470 degrees C, the PR signal intensity gradually increases as T-g increases from 400 to 440 degrees C, reaching a maximum at 440 degrees C. Outside this growth window, the SL quality deteriorates very rapidly. However, the carrier recombination lifetime measured at 300 K was not sensitive to T-g. Although the SL sample grown at 430 degrees C produced the longest lifetime of 84 ns, the average 300 K lifetime value remained around 74 ns. (C) 2014 American Vacuum Society.
C1 [Haugan, Heather J.; Brown, Gail J.; Mahalingam, Krishnamurthy; Grazulis, Larry] US Air Force, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Noe, Gary T.; Ogden, Nathan E.; Kono, Junichiro] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA.
RP Haugan, HJ (reprint author), US Air Force, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM heather.haugan.ctr@us.af.mil
FU Air Force [FA8650-11-D-5801]; Air Force Research Laboratory
[FA8650-07-5601]; National Science Foundation [EEC-0540832]
FX The work of H.J. Haugan was performed under Air Force contract number
FA8650-11-D-5801. The authors thank S. Fenstermaker and G. Landis for a
technical assistance with the MBE system and sample preparation for the
measurements, respectively. The lifetime measurements reported here were
conducted at Rice University with supported by by Air Force Research
Laboratory under agreement No. FA8650-07-5601. G.T.N., N.E.O., and J.K.
acknowledge support from the National Science Foundation through Grant
No. EEC-0540832.
NR 25
TC 9
Z9 9
U1 0
U2 10
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD MAR
PY 2014
VL 32
IS 2
AR 02C109
DI 10.1116/1.4864746
PG 5
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA AD9BW
UT WOS:000333560600017
ER
PT J
AU Guss, P
Reed, M
Yuan, D
Beller, D
Cutler, M
Contreras, C
Mukhopadhyay, S
Wilde, S
AF Guss, Paul
Reed, Michael
Yuan, Ding
Beller, Denis
Cutler, Matthew
Contreras, Christopher
Mukhopadhyay, Sanjoy
Wilde, Scott
TI SIZE EFFECT ON NUCLEAR GAMMA-RAY ENERGY SPECTRA ACQUIRED BY
DIFFERENT-SIZED CeBr3, LaBr3:Ce, AND NaI:Tl GAMMA-RAY DETECTORS
SO NUCLEAR TECHNOLOGY
LA English
DT Article
DE scintillator; self-activity; size effect
ID NAI(TL) SCINTILLATORS; LACL3-CE; CONTAMINATION; SPECTROSCOPY; CRYSTAL;
HALIDES
AB Gamma-ray energy spectra were acquired for different sizes of cerium tribromide (CeBr3), cerium-doped lanthanum tribromide (LaBr3:Ce), and thallium-doped sodium iodide (NaI:Tl) detectors. A comparison was conducted of the energy resolution and detection efficiency of these scintillator detectors for different sizes of detectors. The results of this study are consistent with the observation that for each size detector, LaBr3:Ce offers better resolution than either a CeBr3 or NaI:Tl detector of the same size. In addition, CeBr3 and LaBr3:Ce detectors could resolve some closely spaced peaks in the spectra of several radioisotopes that NaI:Tl could not. As the detector size increased, all three detector materials exhibited higher efficiency, albeit with slightly reduced resolution. Significantly, the very low intrinsic activity of CeBr3 is also demonstrated in this study, which, when combined with energy resolution characteristics for a range of detector sizes, could lead to an improved ability to detect special nuclear materials compared to the other detectors.
C1 [Guss, Paul; Reed, Michael] Remote Sensing Lab, Las Vegas, NV 89193 USA.
[Yuan, Ding] Natl Secur Technol LLC, Los Alamos Operat, Los Alamos, NM 87544 USA.
[Beller, Denis; Cutler, Matthew; Contreras, Christopher; Wilde, Scott] Univ Nevada, Las Vegas, NV 89154 USA.
[Mukhopadhyay, Sanjoy] Remote Sensing Lab Andrews, Andrews AFB, MD 20762 USA.
RP Guss, P (reprint author), Remote Sensing Lab, POB 98521, Las Vegas, NV 89193 USA.
EM gusspp@nv.doe.gov
FU U.S. Department of Energy [DE-AC52-06NA25946]; Site-Directed Research
and Development Program
FX This manuscript has been authored by National Security Technologies,
LLC, supported by the Site-Directed Research and Development Program,
under contract DE-AC52-06NA25946 with the U.S. Department of Energy.
NR 26
TC 3
Z9 3
U1 0
U2 3
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
EI 1943-7471
J9 NUCL TECHNOL
JI Nucl. Technol.
PD MAR
PY 2014
VL 185
IS 3
BP 309
EP 321
PG 13
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA AE1LF
UT WOS:000333730100007
ER
PT J
AU Tubay, M
Hostetler, V
Tujo, C
Rezvani, M
Shaaban, A
AF Tubay, Marc
Hostetler, Valerie
Tujo, Charlie
Rezvani, Maryam
Shaaban, Akram
TI Resident and Fellow Education Feature What Is That Cyst? Common Cystic
Lesions of the Female Lower Genitourinary Tract
SO RADIOGRAPHICS
LA English
DT Editorial Material
C1 [Tubay, Marc; Rezvani, Maryam; Shaaban, Akram] Univ Utah, Hlth Sci Ctr, Salt Lake City, UT USA.
[Tubay, Marc; Tujo, Charlie] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
RP Tubay, M (reprint author), US Air Force Acad, 10MSGS SGCR, Med Grp 10, 4102 Pinion Dr, Colorado Springs, CO 80840 USA.
EM mtubay@hotmail.com
NR 3
TC 0
Z9 0
U1 0
U2 1
PU RADIOLOGICAL SOC NORTH AMERICA
PI OAK BROOK
PA 820 JORIE BLVD, OAK BROOK, IL 60523 USA
SN 0271-5333
J9 RADIOGRAPHICS
JI Radiographics
PD MAR-APR
PY 2014
VL 34
IS 2
BP 427
EP 428
DI 10.1148/rg.342135086
PG 2
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA AD0SS
UT WOS:000332945000015
PM 24617689
ER
PT J
AU Williams, DF
Corson, P
Sharma, J
Krishnaswamy, H
Tai, W
George, Z
Ricketts, DS
Watson, PM
Dacquay, E
Voinigescu, SP
AF Williams, Dylan F.
Corson, Phillip
Sharma, Jahnavi
Krishnaswamy, Harish
Tai, Wei
George, Zacharias
Ricketts, David S.
Watson, Paul M.
Dacquay, Eric
Voinigescu, Sorin P.
TI Calibrations for Millimeter-Wave Silicon Transistor Characterization
SO IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
LA English
DT Article
DE Calibration; measurement; millimeter wave; scattering parameters;
silicon; transistor; vector network analyzer (VNA)
ID GHZ; PARAMETER; ALGORITHM
AB This paper compares on-wafer thru-reflect-line (TRL) and off-wafer short-open-load-thru (SOLT) and line-reflect-reflect-match (LRRM) vector-network-analyzer probe-tip calibrations for amplifier characterization and parasitic-extraction calibrations for transistor characterization on silicon integrated circuits at millimeter-wave frequencies. We show that on-wafer calibrations generally outperform off-wafer and LRRM probe-tip calibrations at millimeter-wave frequencies. However, certain parasitic-extraction algorithms designed specifically to remove contact pads, transmission-lines, and access vias correct for much of the error in off-wafer calibrations.
C1 [Williams, Dylan F.] NIST, Boulder, CO 80305 USA.
[Corson, Phillip] IBM Semicond Res & Dev Ctr, Essex Jct, VT 05452 USA.
[Sharma, Jahnavi; Krishnaswamy, Harish] Columbia Univ, Dept Elect Engn, New York, NY 10027 USA.
[Tai, Wei; George, Zacharias] Carnegie Mellon Univ, Elect & Comp Engn Dept, Pittsburgh, PA 15213 USA.
[Ricketts, David S.] N Carolina State Univ, Elect & Comp Engn Dept, Raleigh, NC 27606 USA.
[Watson, Paul M.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Dacquay, Eric; Voinigescu, Sorin P.] Univ Toronto, Elect & Comp Engn Dept, Toronto, ON M5S 3G4, Canada.
RP Williams, DF (reprint author), NIST, Boulder, CO 80305 USA.
EM dylan@boulder.nist.gov
FU Defense Advanced Research Projects Agency (DARPA) under the ELASTx
Program
FX This work was supported by the Defense Advanced Research Projects Agency
(DARPA) under the ELASTx Program.
NR 34
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U1 0
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9480
EI 1557-9670
J9 IEEE T MICROW THEORY
JI IEEE Trans. Microw. Theory Tech.
PD MAR
PY 2014
VL 62
IS 3
BP 658
EP 668
DI 10.1109/TMTT.2014.2300839
PG 11
WC Engineering, Electrical & Electronic
SC Engineering
GA AC8DL
UT WOS:000332763100028
ER
PT J
AU Gonzales, AE
Koo, JW
Hargus, WA
AF Gonzales, Ashley E.
Koo, Justin W.
Hargus, William A., Jr.
TI Comparison of Numerical and Experimental Time-Resolved Near-Field Hall
Thruster Plasma Properties
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Breathing mode; hall thruster; HPHall; plume emission
ID OSCILLATIONS
AB Breathing mode oscillations of a xenon 600 W Hall effect thruster have been studied using temporally resolved experimental data and numerical modeling. Fluctuations in xenon neutral near infrared (810-835 nm) emission in the near field thruster plume have been measured at 1-mu s resolution using a high speed, phase-matched intensified charge coupled device. Oscillations in electron temperature, 3-9 eV, have been inferred using a collisional-radiative model and a two-line ratio method. The time-resolved emission and electron temperature measurements are then used to assess the accuracy of the numerical model HPHall. Although simulations were able to accurately predict the time averaged thruster behavior, the model greatly under predicts the magnitude of the oscillations. General phase trends between the discharge current and emission as well as electron temperature are consistent with observations, suggesting that the model is capable of capturing some of the oscillatory behavior despite the dampening of the oscillations.
C1 [Gonzales, Ashley E.; Koo, Justin W.; Hargus, William A., Jr.] US Air Force Res Lab, Edwards AFB, CA 93524 USA.
RP Gonzales, AE (reprint author), US Air Force Res Lab, Edwards AFB, CA 93524 USA.
EM ashley.gonzales.4@us.af.mil; justin.koo@edwards.af.mil;
william.hargus@edwards.af.mil
NR 25
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Z9 0
U1 1
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD MAR
PY 2014
VL 42
IS 3
BP 806
EP 812
DI 10.1109/TPS.2014.2301038
PN 2
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA AD0ZV
UT WOS:000332964400016
ER
PT J
AU Blomberg, D
Cotellesso, P
Sitzabee, W
Thal, AE
AF Blomberg, Daniel
Cotellesso, Paul
Sitzabee, William
Thal, Alfred E., Jr.
TI Discovery of Internal and External Factors Causing Military Construction
Cost Premiums
SO JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT
LA English
DT Article
DE Government; Design/build; Assets; Cost and schedule; Military
engineering; Construction management; Construction costs; Procurement;
Contract management
ID PROJECTS
AB Each year, the United States invests $30billion in federal construction. Military construction (MILCON) represents 40% ($12billion) of that capital investment. This study confirmed the existence of MILCON cost premiums compared with private sector construction through an analysis of existing research. This study also evaluated two nearly identical projects and used expert interviews and surveys to determine which factors influence the cost premiums. The projects represented a rare opportunity to compare projects that had the same end requirement: method of execution and acquisition, design/build and firm-fixed price; and location but differed by government construction agent. In addition to identifying the 28 factors that moderately or largely influence cost premiums, five overarching cost-premium themes emerged: failing to balance risk, additional public-sector requirements, stifling or not applying innovation, selection of construction specifications, and parameterization of the execution process. Additionally, once complete, two nearly identical projects differed by over a year of construction time and $7million in spite of the contract requirement similarities. Research frequently cites federal laws and policies as the primary cost-premium driver; however, this research demonstrated that internal construction agent policies also cause increased cost premiums. Mitigating the causes of internal cost premiums could improve public-sector construction cost performance.
C1 [Blomberg, Daniel] US Air Force, Eglin AFB, FL 32542 USA.
[Cotellesso, Paul] US Air Force, Air Force Inst Technol, Wright Patterson AFB, OH 45433 USA.
[Sitzabee, William] Cornell Univ, US Air Force, Ithaca, NY 14853 USA.
[Thal, Alfred E., Jr.] Air Force Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Blomberg, D (reprint author), US Air Force, 366th Training Squadron,Detachment 3, Eglin AFB, FL 32542 USA.
EM daniel.blomberg@us.af.mil; paul.cotellesso@afit.edu; wes228@cornell.edu;
alfred.thal@afit.edu
FU Air Force Civil Engineer Center; United States Army Corps of Engineers
Alaska District; 673d Civil Engineer Group; Weldin Construction;
CDMSmith
FX The writers would like to thank the Air Force Civil Engineer Center,
United States Army Corps of Engineers Alaska District, 673d Civil
Engineer Group, Weldin Construction, and CDMSmith for their support,
insights, and contributions to this work.
NR 26
TC 0
Z9 0
U1 6
U2 19
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 0733-9364
EI 1943-7862
J9 J CONSTR ENG M
JI J. Constr. Eng. Manage.
PD MAR 1
PY 2014
VL 140
IS 3
DI 10.1061/(ASCE)CO.1943-7862.0000810
PG 9
WC Construction & Building Technology; Engineering, Industrial;
Engineering, Civil
SC Construction & Building Technology; Engineering
GA AC6UG
UT WOS:000332659900004
ER
PT J
AU Gumbs, G
Roslyak, O
Huang, DH
Balassis, A
AF Gumbs, Godfrey
Roslyak, Oleksiy
Huang, Danhong
Balassis, Antonios
TI Influence of dielectric environment on the role of spin- orbit
interaction for image potentials
SO PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
LA English
DT Article
DE image potential; spin-orbit interactions; topological insulators;
two-dimensional electron gas
ID 2-DIMENSIONAL ELECTRON-GAS; QUANTIZED CONDUCTANCE; QUANTUM-WELLS;
STATES; GRAPHITE; SURFACE; LENGTH
AB We present a formalism for calculating the image potential for a two-dimensional electron gas (2DEG) with Rashba spin-orbit interaction (SOI) as well as for a 2D topological insulator (TI). The formalism is further generalized for including the Coulomb coupled multiple layers. Roles of broken inversion symmetry near the surface and the dielectric environment are investigated by using a surface-response function. The insignificant role of SOI in 2DEG is dramatically enhanced in TI by selecting a small relative permittivity epsilon b for the dielectric environment. Manipulating epsilon b is proven to provide an efficient way to drive electrons with opposite spins into two different integral quantum Hall states. The prediction made in this paper is expected to be experimentally observable for a 2DTI system, such as Bi-2 Se-3, with a helical spin behavior and a dominant linear Rashba SOI-like term in the energy dispersion. (C) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
C1 [Gumbs, Godfrey; Roslyak, Oleksiy] CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10065 USA.
[Roslyak, Oleksiy] CINT, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
[Huang, Danhong] AF Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Balassis, Antonios] Fordham Univ, Dept Phys & Engn Phys, Bronx, NY 10458 USA.
RP Huang, DH (reprint author), AF Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
EM danhong.huang@kirtland.af.mil
FU AFRL [FA 9453-11-01-0263]; Air Force Office of Scientific Research
(AFOSR)
FX This research was supported by contract # FA 9453-11-01-0263 of AFRL.
D.H. would like to thank the Air Force Office of Scientific Research
(AFOSR) for its support.
NR 42
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U1 0
U2 3
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0370-1972
EI 1521-3951
J9 PHYS STATUS SOLIDI B
JI Phys. Status Solidi B-Basic Solid State Phys.
PD MAR
PY 2014
VL 251
IS 3
BP 593
EP 600
DI 10.1002/pssb.201349263
PG 8
WC Physics, Condensed Matter
SC Physics
GA AC4XD
UT WOS:000332523600011
ER
PT J
AU Kelly, TD
Petrosky, JC
Turner, D
McClory, JW
Mann, JM
Kolis, JW
Zhang, X
Dowben, PA
AF Kelly, T. D.
Petrosky, J. C.
Turner, D.
McClory, J. W.
Mann, J. M.
Kolis, J. W.
Zhang, Xin
Dowben, P. A.
TI The unoccupied electronic structure characterization of hydrothermally
grown ThO 2 single crystals
SO PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
LA English
DT Article
DE electronic properties; ThO2; photoemission; inverse photoemission; X-ray
absorption near edge spectroscopy
ID GROUND-STATE PROPERTIES; NEAR-EDGE STRUCTURE; MOLECULAR ICOSAHEDRA;
DIOXIDES; FILMS
AB Single crystals of thorium dioxide ThO2, grown by the hydrothermal growth technique, have been investigated by ultraviolet photoemission spectroscopy (UPS), inverse photoemission spectroscopy (IPES), and L-3, M-3, M-4, and M-5 X-ray absorption near edge spectroscopy (XANES). The experimental band gap for large single crystals has been determined to be 6 eV to 7 eV, from UPS and IPES, in line with expectations. The combined UPS and IPES, place the Fermi level near the conduction band minimum, making these crystals n-type, with extensive band tailing, suggesting an optical gap in the region of 4.8 eV for excitations from occupied to unoccupied edge states. Hybridization between the Th 6d/5f bands with O 2p is strongly implicated. ((c) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
C1 [Kelly, T. D.; Petrosky, J. C.; McClory, J. W.] Air Force Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
[Turner, D.] Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37830 USA.
[Mann, J. M.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
[Kolis, J. W.] Clemson Univ, Dept Chem, Clemson, SC 29634 USA.
[Kolis, J. W.] Clemson Univ, Ctr Opt Mat Sci & Engn Technol, Clemson, SC 29634 USA.
[Zhang, Xin; Dowben, P. A.] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA.
RP Kelly, TD (reprint author), Air Force Inst Technol, Dept Engn Phys, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM Tony.Kelly@afit.edu; James.Petrosky@afit.edu
RI Zhang, Xin/J-5478-2015;
OI Zhang, Xin/0000-0001-9232-427X; McClory, John/0000-0002-4303-2729
FU Defense Threat Reduction Agency [HDTRA138584]; Nebraska Materials
Research Science and Engineering Center (NSF) [DMR-0820521]
FX This work was supported by the Defense Threat Reduction Agency (Grant
No. HDTRA138584) and the Nebraska Materials Research Science and
Engineering Center (NSF - DMR-0820521). The views expressed in this
article are those of the authors and do not reflect the official policy
or position of the Air Force, Department of Defense or the U.S.
Government.
NR 26
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U2 32
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1862-6254
EI 1862-6270
J9 PHYS STATUS SOLIDI-R
JI Phys. Status Solidi-Rapid Res. Lett.
PD MAR
PY 2014
VL 8
IS 3
BP 283
EP 286
DI 10.1002/pssr.201308286
PG 4
WC Materials Science, Multidisciplinary; Physics, Applied; Physics,
Condensed Matter
SC Materials Science; Physics
GA AD0MO
UT WOS:000332928600016
ER
PT J
AU Chen, HB
Parthasarathy, TA
Cinibulk, MK
Chen, MY
AF Chen, Haibiao
Parthasarathy, Triplicane A.
Cinibulk, Michael K.
Chen, Ming-Yung
TI Processing, Characterization, and Modeling of Room-Temperature-
Vulcanized Silicone-Derived Ceramic Foams
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID PRECERAMIC POLYMER; THERMAL-DEGRADATION; OXYCARBIDE GLASSES; PRECURSORS;
PYROLYSIS; NETWORKS
AB A novel method was developed to produce ceramic foams from a silicone precursor which was foamed and vulcanized at room temperature. Silicone foams were prepared by platinum-catalyzed cross-linking and dehydrogenation of reactive polysiloxanes. Silicone foams were converted to ceramic foams after being pyrolyzed at 1200 degrees C in argon. Near-net-shape polymer-to-ceramic conversion was achieved when SiC particles were added to the polymer as a solid filler. A simple physical model was created to describe the rising and pyrolysis of the silicone foam, and was validated by experimental data. Foam density was largely dependent on the content of ethanol, which was used as a chemical blowing agent. Up to 1.8wt% ethanol was effective in driving foam rising without leading to foam collapse. SiC filler helped reduce weight loss and volumetric shrinkage during pyrolysis, and slightly increased foam density. Scanning electron microscopy indicated that although incorporating a solid filler helps to reduce the bulk shrinkage, it cannot prevent local microcracking and residual porosity.
C1 [Chen, Haibiao; Parthasarathy, Triplicane A.; Cinibulk, Michael K.; Chen, Ming-Yung] US Air Force, Mat & Mfg Directorate, Dayton, OH 45433 USA.
[Chen, Haibiao; Parthasarathy, Triplicane A.] UES Inc, Dayton, OH 45432 USA.
RP Chen, MY (reprint author), US Air Force, Mat & Mfg Directorate, Dayton, OH 45433 USA.
EM ming-yung.chen@wpafb.af.mil
FU Air Force Research Laboratory [FA8650-10-D-5226]
FX The authors thank Dr. Sirina Safriet of the University of Dayton
Research Institute for collecting X-ray CT scan data of silicone and
ceramic foams. Dr. Alexander B. Morgan of the University of Dayton
Research Institute is also gratefully acknowledged for his insightful
suggestions on silicone foam materials. Haibiao Chen and Triplicane A.
Parthasarathy were supported by the Air Force Research Laboratory under
contract no. FA8650-10-D-5226.
NR 31
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U1 3
U2 17
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-7820
EI 1551-2916
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD MAR
PY 2014
VL 97
IS 3
BP 733
EP 741
DI 10.1111/jace.12754
PG 9
WC Materials Science, Ceramics
SC Materials Science
GA AC0OX
UT WOS:000332195700013
ER
PT J
AU Ichinose, G
Woods, M
Dwyer, J
AF Ichinose, G.
Woods, M.
Dwyer, J.
TI Mantle Attenuation Estimated from Regional and Teleseismic P-waves of
Deep Earthquakes and Surface Explosions
SO PURE AND APPLIED GEOPHYSICS
LA English
DT Article
DE Mantle attenuation; deep earthquakes; nuclear explosion monitoring;
teleseismic P-waves
ID TIME FUNCTIONS APPROPRIATE; MOMENT TENSOR INVERSION;
FREQUENCY-DEPENDENCE; NUCLEAR-EXPLOSIONS; SEISMIC SOURCE; SOURCE
PARAMETERS; UNITED-STATES; SHIELD AREAS; SPECTRA; EURASIA
AB We estimated the network-averaged mantle attenuation t*(total) of 0.5 s beneath the North Korea test site (NKTS) by use of P-wave spectra and normalized spectral stacks from the 25 May 2009 declared nuclear test (mb 4.5; IDC). This value was checked using P-waves from seven deep (580-600 km) earthquakes (4.8 < M (w) < 5.5) in the Jilin-Heilongjiang, China region that borders with Russia and North Korea. These earthquakes are 200-300 km from the NKTS, within 200 km of the Global Seismic Network seismic station in Mudanjiang, China (MDJ) and the International Monitoring System primary arrays at Ussuriysk, Russia (USRK) and Wonju, Republic of Korea (KSRS). With the deep earthquakes, we split the t*(total) ray path into two segments: a t*(u), that represents the attenuation of the up-going ray from the deep hypocenters to the local-regional receivers, and t*(d), that represents the attenuation along the down-going ray to teleseismic receivers. The sum of t*(u) and t*(d) should be equal to t*(total), because they both share coincident ray paths. We estimated the upper-mantle attenuation t*(u) of 0.1 s at stations MDJ, USRK, and KSRS from individual and stacks of normalized P-wave spectra. We then estimated the average lower-mantle attenuation t*(d) of 0.4 s using stacked teleseismic P-wave spectra. We finally estimated a network average t*(total) of 0.5 s from the stacked teleseismic P-wave spectra from the 2009 nuclear test, which confirms the equality with the sum of t*(u) and t*(d). We included constraints on seismic moment, depth, and radiation pattern by using results from a moment tensor analysis and corner frequencies from modeling of P-wave spectra recorded at local distances. We also avoided finite-faulting effects by excluding earthquakes with complex source time functions. We assumed omega(2) source models for earthquakes and explosions. The mantle attenuation beneath the NKTS is clearly different when compared with the network-averaged t* of 0.75 s for the western US and is similar to values of approximately 0.5 s for the Semipalatinsk test site within the 0.5-2 Hz range.
C1 [Ichinose, G.; Woods, M.; Dwyer, J.] TTR, Air Force Tech Applicat Ctr, Patrick AFB, Brevard, FL 32925 USA.
RP Ichinose, G (reprint author), TTR, Air Force Tech Applicat Ctr, Patrick AFB, 1030 South Highway A1A, Brevard, FL 32925 USA.
EM gichinose@aftac.gov
RI Ichinose, Gene/I-4420-2016
OI Ichinose, Gene/0000-0003-2081-9825
FU National Science Foundation; GEO Directorate through the Instrumentation
and Facilities Program of the National Science Foundation [EAR-0552316]
FX The views expressed in this article are those of the authors and do not
necessarily reflect the position or policy of the United States Air
Force or the United States government. The facilities of the IRIS Data
Management System and, specifically, the IRIS Data Management Center,
were used for access to waveform and metadata required in this study.
The IRIS DMS is funded through the National Science Foundation and,
specifically, the GEO Directorate through the Instrumentation and
Facilities Program of the National Science Foundation under Cooperative
Agreement EAR-0552316. Global Seismographic Network (GSN) is a
cooperative scientific facility operated jointly by the Incorporated
Research Institutions for Seismology (IRIS), the United States
Geological Survey (USGS), and the National Science Foundation (NSF).
NR 33
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U1 1
U2 7
PU SPRINGER BASEL AG
PI BASEL
PA PICASSOPLATZ 4, BASEL, 4052, SWITZERLAND
SN 0033-4553
EI 1420-9136
J9 PURE APPL GEOPHYS
JI Pure Appl. Geophys.
PD MAR
PY 2014
VL 171
IS 3-5
BP 485
EP 506
DI 10.1007/s00024-012-0632-z
PG 22
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA AC7XE
UT WOS:000332745900010
ER
PT J
AU Johnson, GA
Horton, SP
Withers, M
Cox, R
AF Johnson, Greg A.
Horton, Stephen P.
Withers, Mitch
Cox, Randy
TI Earthquake Focal Mechanisms in the New Madrid Seismic Zone
SO SEISMOLOGICAL RESEARCH LETTERS
LA English
DT Article
ID INTRAPLATE SEISMICITY; STRESS; FAULT; DEFORMATION; MISSOURI; UPLIFT;
SLIP
C1 [Johnson, Greg A.] BAE Syst, Aerosp Solut, Air Force Tech Applicat Ctr, Patrick AFB, FL 32935 USA.
[Horton, Stephen P.; Withers, Mitch] Univ Memphis, Ctr Earthquake Res & Informat, Memphis, TN 38152 USA.
[Cox, Randy] Univ Memphis, Dept Earth Sci, Memphis, TN 38152 USA.
RP Johnson, GA (reprint author), BAE Syst, Aerosp Solut, Air Force Tech Applicat Ctr, 1030 South Highway A1A, Patrick AFB, FL 32935 USA.
EM gregoryajohnson83@gmail.com
FU U.S. Geological Survey [06HQGR0137]
FX Funding for this study was provided by the U.S. Geological Survey
(External Grant Award Number 06HQGR0137). I am grateful to the Center
for Earthquake Research and Information (CERI) for providing the seismic
data and for providing the computing facilities to complete my research.
The polar projections in Figure 7 were produced using a script developed
by Stefan Wiemer of the Swiss Seismological Service (SED) at ETH Zurich.
NR 39
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U1 1
U2 12
PU SEISMOLOGICAL SOC AMER
PI ALBANY
PA 400 EVELYN AVE, SUITE 201, ALBANY, CA 94706-1375 USA
SN 0895-0695
J9 SEISMOL RES LETT
JI Seismol. Res. Lett.
PD MAR-APR
PY 2014
VL 85
IS 2
BP 257
EP 267
DI 10.1785/0220130140
PG 11
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA AC8SF
UT WOS:000332804400002
ER
PT J
AU Antolik, M
Ichinose, G
Creasey, J
Clauter, D
AF Antolik, Michael
Ichinose, Gene
Creasey, Jonathan
Clauter, Dean
TI Seismic and Infrasonic Analysis of the Major Bolide Event of 15 February
2013
SO SEISMOLOGICAL RESEARCH LETTERS
LA English
DT Article
ID SURFACE-WAVE MAGNITUDE; MOMENT TENSOR INVERSION; NUCLEAR-EXPLOSIONS;
CHELYABINSK METEOR; SOURCE PARAMETERS; YIELD; DISCRIMINATION;
EARTHQUAKES; AMPLITUDES; RELEASE
C1 [Antolik, Michael] Quantum Technol Sci Inc, Cocoa Beach, FL 32931 USA.
[Ichinose, Gene; Creasey, Jonathan; Clauter, Dean] Air Force Tech Applicat Ctr, Patrick AFB, FL 32925 USA.
RP Antolik, M (reprint author), Quantum Technol Sci Inc, 1980 N Atlantic Ave, Cocoa Beach, FL 32931 USA.
EM mantolik@qtsi.com
RI Ichinose, Gene/I-4420-2016
OI Ichinose, Gene/0000-0003-2081-9825
FU Air Force Technical Applications Center
FX The authors acknowledge Incorporated Research Institutions for
Seismology (IRIS), the United States Geological Survey (USGS), and the
Comprehensive Nuclear-Test-Ban Treaty Organization for providing most of
the data used in this study. This article is sponsored by the Air Force
Technical Applications Center.
NR 31
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U1 0
U2 2
PU SEISMOLOGICAL SOC AMER
PI ALBANY
PA 400 EVELYN AVE, SUITE 201, ALBANY, CA 94706-1375 USA
SN 0895-0695
J9 SEISMOL RES LETT
JI Seismol. Res. Lett.
PD MAR-APR
PY 2014
VL 85
IS 2
BP 334
EP 343
DI 10.1785/0220130061
PG 10
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA AC8SF
UT WOS:000332804400010
ER
PT J
AU Heimbuch, BK
Kinney, K
Lumley, AE
Harnish, DA
Bergman, M
Wander, JD
AF Heimbuch, Brian K.
Kinney, Kimberly
Lumley, April E.
Harnish, Delbert A.
Bergman, Michael
Wander, Joseph D.
TI Cleaning of filtering facepiece respirators contaminated with mucin and
Staphylococcus aureus
SO AMERICAN JOURNAL OF INFECTION CONTROL
LA English
DT Article
DE Aerosol; Bioaerosol; Decontamination; Influenza; Pandemic; Saliva
ID DECONTAMINATION
AB Background: Decontamination, cleaning, and reuse of filtering facepiece respirators (FFRs) has been proposed to mitigate an acute FFR shortage during a public health emergency. Our study evaluates the ability of commercially available wipe products to clean FFRs contaminated with either infectious or noninfectious aerosols.
Methods: Three models of surgical N95 FFRs were contaminated with aerosols of mucin or viable Staphylococcus aureus then cleaned with hypochlorite, benzalkonium chloride, or nonantimicrobial wipes. After cleaning, FFRs were separated into components (nose pad, fabrics, and perforated strip), and contaminants were extracted and quantified. Filtration performance was assessed for cleaned FFRs.
Results: Mucin removal was <1 log for all wipe products on all components. Inert wipes achieved similar to 1-log attenuation in viable S aureus on fabrics from all FFR models-removal was less effective from nose pads and perforated edges. Both antimicrobial wipes achieved 3-5-log attenuation on most components, with smaller reductions on nose pads and greater reductions on perforated strips. Particle penetration following cleaning yielded mean values <5%. The highest penetrations were observed in FFRs cleaned with benzalkonium chloride wipes.
Conclusions: FFRs can be disinfected using antimicrobial wipe products, but not effectively cleaned with the wipes evaluated in this study. This study provides informative data for the development of better FFRs and applicable cleaning products. Copyright (C) 2014 by the Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.
C1 [Heimbuch, Brian K.; Kinney, Kimberly; Lumley, April E.; Harnish, Delbert A.] Appl Res Associates, Panama City, FL 32401 USA.
[Bergman, Michael] NIOSH, Pittsburgh, PA USA.
[Wander, Joseph D.] US Air Force, Res Lab, Tyndall AFB, FL USA.
RP Heimbuch, BK (reprint author), Appl Res Associates, 430 W 5th St,Ste 700, Panama City, FL 32401 USA.
EM bheimb44@gmail.com
FU Food and Drug Administration Centers for Devices and Radiologic Health
through the Air Force Research Laboratory
FX This work was funded by the Food and Drug Administration Centers for
Devices and Radiologic Health through an interagency agreement with the
Air Force Research Laboratory.
NR 15
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U1 0
U2 4
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0196-6553
EI 1527-3296
J9 AM J INFECT CONTROL
JI Am. J. Infect. Control
PD MAR
PY 2014
VL 42
IS 3
BP 265
EP 270
DI 10.1016/j.ajic.2013.09.014
PG 6
WC Public, Environmental & Occupational Health; Infectious Diseases
SC Public, Environmental & Occupational Health; Infectious Diseases
GA AC2EO
UT WOS:000332311500012
PM 24462175
ER
PT J
AU Cepon-Robins, TJ
Anton, SC
Crowder, CM
Duren, DL
Fernandez-Duque, E
Leigh, SR
Madimenos, FC
Mcgraw, WS
Middleton, ER
Rainwater, CW
Schmitt, CA
Sherwood, RJ
Stinson, S
Stubblefield, P
Turner, TR
Valeggia, C
Snodgrass, JJ
AF Cepon-Robins, Tara J.
Anton, Susan C.
Crowder, Christian M.
Duren, Dana L.
Fernandez-Duque, Eduardo
Leigh, Steven R.
Madimenos, Felicia C.
Mcgraw, W. Scott
Middleton, Emily R.
Rainwater, Christopher W.
Schmitt, Christopher A.
Sherwood, Richard J.
Stinson, Sara
Stubblefield, Phoebe
Turner, Trudy R.
Valeggia, Claudia
Snodgrass, J. Josh
TI Next steps and best practices in primatology, human biology, forensic
anthropology, and paleoanthropology for the Bones and Behavior Project
SO AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
LA English
DT Meeting Abstract
CT 83rd Annual Meeting of the
American-Association-of-Physical-Anthropologists
CY APR 08-12, 2014
CL Calgary, CANADA
SP Amer Assoc Phys Anthropologists
C1 [Cepon-Robins, Tara J.; Snodgrass, J. Josh] Univ Oregon, Dept Anthropol, Eugene, OR 97403 USA.
[Anton, Susan C.; Middleton, Emily R.; Rainwater, Christopher W.] NYU, Dept Anthropol, New York, NY 10003 USA.
[Anton, Susan C.; Middleton, Emily R.; Rainwater, Christopher W.] NYU, Ctr Study Human Origins, New York, NY 10003 USA.
[Crowder, Christian M.] Armed Forces Med Examiner Syst, Dover Afb, DE USA.
[Duren, Dana L.; Sherwood, Richard J.] Wright State Univ, Boonshoft Sch Med, Div Morphol Sci & Biostat, Dayton, OH 45435 USA.
[Fernandez-Duque, Eduardo; Valeggia, Claudia] Univ Penn, Dept Anthropol, Philadelphia, PA 19104 USA.
[Leigh, Steven R.] Univ Colorado, Dept Anthropol, Boulder, CO 80309 USA.
[Madimenos, Felicia C.; Stinson, Sara] CUNY Queens Coll, Dept Anthropol, Flushing, NY USA.
[Mcgraw, W. Scott] Ohio State Univ, Dept Anthropol, Columbus, OH 43210 USA.
[Middleton, Emily R.] NYCEP, New York, NY USA.
[Rainwater, Christopher W.] Off Chief Med Examiner, New York, NY USA.
[Schmitt, Christopher A.] Univ Calif Los Angeles, Ctr Neurobehav Genet, Los Angeles, CA USA.
[Schmitt, Christopher A.] Univ Calif Los Angeles, Dept Anthropol, Los Angeles, CA 90024 USA.
[Stubblefield, Phoebe] Univ N Dakota, Dept Anthropol, Grand Forks, ND 58201 USA.
[Turner, Trudy R.] Univ Wisconsin, Dept Anthropol, Milwaukee, WI 53201 USA.
[Turner, Trudy R.] Univ Orange Free State, Dept Genet, Bloemfontein, South Africa.
RI Schmitt, Christopher/F-7251-2013
OI Schmitt, Christopher/0000-0003-2143-9226
NR 0
TC 0
Z9 0
U1 0
U2 6
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-9483
EI 1096-8644
J9 AM J PHYS ANTHROPOL
JI Am. J. Phys. Anthropol.
PD MAR
PY 2014
VL 153
SU 58
SI SI
BP 92
EP 93
PG 2
WC Anthropology; Evolutionary Biology
SC Anthropology; Evolutionary Biology
GA AA6RH
UT WOS:000331225100128
ER
PT J
AU Luo, HY
Cooper, WL
Lu, HB
AF Luo, Huiyang
Cooper, William L.
Lu, Hongbing
TI Effects of particle size and moisture on the compressive behavior of
dense Eglin sand under confinement at high strain rates
SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
LA English
DT Article
DE High-strain rate; Moisture; Particle size; Dynamic compaction of sand;
Confinement
ID HOPKINSON PRESSURE BAR; GRANULAR-MATERIALS; DAMAGED CERAMICS; SOFT
SOILS; MODEL; DEFORMATION; INTACT; MEDIA
AB The dynamic compressive behavior of sorted and unsorted Eglin sand (Quikrete #1961 sand quarried in Pensacola, FL) under confinement was characterized under dry or moisture conditions at strain rates near 600 s(-1) using a long split Hopkinson pressure bar, respectively. The as-received unsorted sand was sorted into grain sizes of 0.60 mm, 0.50 mm, 0.42 mm, 0.30 mm, 0.212 mm, 0.15 mm, 0.106 mm and 0.053 mm. For preparation of a partially saturated sand specimen sealed in a sand specimen assembly, water was introduced to reach moisture contents of 0%, 42%, 8.2%, 12.4%, 14.4% and 16.5%. A sand specimen assembly was used, and sand grains were confined inside a hollow cylinder of hardened steel and capped by cemented tungsten carbide rods. The assembly was subjected to repeat manual shaking and tapping to consolidate the sand to attain a given mass density; it was then sandwiched between incident and transmission bars for compression under a high strain rate. The volumetric and deviatoric behavior of dense Eglin sand was investigated on eight sorted sand specimens and at six moisture contents. After impact, the sand was analyzed to determine the particle size distribution, which was found to follow Weibull distribution rather than Gaussian distribution. The breakage factor was found to follow a linear relationship with moisture content. The effect of initial particle size and moisture on the volumetric and deviatoric behavior of sand was discussed. The compressibility was characterized in terms of void ratio as a function of axial pressure. The specific energy absorption and shear stress hydrostatic pressure ationships were determined for different grain sizes and moisture contents. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Luo, Huiyang; Lu, Hongbing] Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 USA.
[Cooper, William L.] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
RP Lu, HB (reprint author), Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 USA.
EM hongbing.lu@utdallas.edu
RI Lu, Hongbing/A-1312-2011
FU ONR MURI [0014-11-1-0691]; DOE NEUP [09-818]; NSF [CMMI-1031829,
CMMI-1132174, ECCS-1307997]
FX We acknowledge the support of ONR MURI grant NO. 0014-11-1-0691 and DOE
NEUP grant 09-818. Lu also acknowledges NSF under CMMI-1031829,
CMMI-1132174, and ECCS-1307997, and the Louis A. Beecherl Jr. Chair for
additional support. We thank Sarah Staggs for SEM micrographs.
NR 56
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Z9 9
U1 6
U2 26
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0734-743X
EI 1879-3509
J9 INT J IMPACT ENG
JI Int. J. Impact Eng.
PD MAR
PY 2014
VL 65
BP 40
EP 55
DI 10.1016/j.ijimpeng.2013.11.001
PG 16
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA AB6SQ
UT WOS:000331920200004
ER
PT J
AU Evans, JW
Berry, PA
Schepler, KL
AF Evans, Jonathan W.
Berry, Patrick A.
Schepler, Kenneth L.
TI A Passively Q-Switched, CW-Pumped Fe:ZnSe Laser
SO IEEE JOURNAL OF QUANTUM ELECTRONICS
LA English
DT Article
DE Solid-state lasers; Q-switched lasers; infrared lasers
ID FE-ZNSE; TEMPERATURE
AB We report the demonstration of high-average-power passively Q-switched laser oscillation from Fe2+ ions in zinc selenide. A semiconductor saturable absorber mirror was used as a passive Q-switch element. Using a 60% R outcoupler, the pump-limited output power was 515 mW. The spectral center of the laser was 4045 nm. The pulse repetition frequency (PRF) at maximum power was similar to 850 kHz with a corresponding minimum pulsewidth of 64 ns Full-Width Half-Maximum. The pulse energy and peak power were > 600 nJ and 8.3 W, respectively. The average output power was limited only by available pump power and increased with a slope efficiency of 22%. No thermal rolloff of slope-efficiency was observed. The beam quality was measured to be M-2 <= 2.6. The temporal stability of the pulsed output was characterized. Thermal effects were shown to play a significant role in determining the PRF of the output.
C1 [Evans, Jonathan W.; Berry, Patrick A.; Schepler, Kenneth L.] US Air Force, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Evans, JW (reprint author), US Air Force, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
EM jonathan.evans@wpafb.af.mil; patrick.berry@wpafb.af.mil;
kenneth.schepler@us.af.mil
OI Berry, Patrick/0000-0003-1294-6509; Schepler,
Kenneth/0000-0001-9658-2305
FU Air Force Office of Scientific Research; Sensors Directorate
FX This work was supported in part by the Air Force Office of Scientific
Research and in part by the Sensors Directorate.
NR 12
TC 5
Z9 7
U1 3
U2 26
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9197
EI 1558-1713
J9 IEEE J QUANTUM ELECT
JI IEEE J. Quantum Electron.
PD MAR
PY 2014
VL 50
IS 3
BP 204
EP 209
DI 10.1109/JQE.2014.2302233
PG 6
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA AB7LQ
UT WOS:000331972000003
ER
PT J
AU Zhou, Z
Obi, O
Nan, TX
Beguhn, S
Lou, J
Yang, X
Gao, Y
Li, M
Rand, S
Lin, H
Sun, NX
Esteves, G
Nittala, K
Jones, JL
Mahalingam, K
Liu, M
Brown, GJ
AF Zhou, Z.
Obi, O.
Nan, T. X.
Beguhn, S.
Lou, J.
Yang, X.
Gao, Y.
Li, M.
Rand, S.
Lin, H.
Sun, N. X.
Esteves, G.
Nittala, K.
Jones, J. L.
Mahalingam, K.
Liu, M.
Brown, G. J.
TI Low-temperature spin spray deposited ferrite/piezoelectric thin film
magnetoelectric heterostructures with strong magnetoelectric coupling
SO JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
LA English
DT Article
AB We report low-temperature spin spray deposited Fe3O4/ZnO thin film microwave magnetic/piezoelectric magnetoelectric heterostructures. A voltage induced effective ferromagnetic resonance field of 14 Oe was realized in Fe3O4/ZnO magnetoelectric (ME) heterostructures. Compared with most thin film magnetoelectric heterostructures prepared by high temperature (> 600 A degrees C) deposition methods, for example, pulsed laser deposition, molecular beam epitaxy, or sputtering, Fe3O4/ZnO ME heterostructures have much lower deposition temperature (< 100 A degrees C) at a much lower cost and less energy dissipation, which can be readily integrated in different integrated circuits.
C1 [Zhou, Z.; Obi, O.; Nan, T. X.; Beguhn, S.; Lou, J.; Yang, X.; Gao, Y.; Li, M.; Rand, S.; Lin, H.; Sun, N. X.] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
[Esteves, G.; Nittala, K.; Jones, J. L.] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
[Mahalingam, K.; Liu, M.; Brown, G. J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Sun, NX (reprint author), Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
EM nian@ece.neu.edu
RI Lou, Jing/B-6762-2009; Zhou, Ziyao/N-8398-2015; Nan,
Tianxiang/A-8020-2016; Gao, Yuan/E-4277-2016; Yang, Xi/E-6042-2016; Sun,
Nian Xiang/F-9590-2010; Liu, Ming/B-4143-2009
OI Zhou, Ziyao/0000-0002-2389-1673; Gao, Yuan/0000-0002-2444-1180; Sun,
Nian Xiang/0000-0002-3120-0094; Liu, Ming/0000-0002-6310-948X
FU NSF CAREER awards [0746810]; United States Air Force Research Laboratory
[FA8721-05-C-0002]; Army Research Office [W911NF-09-1-0435]; U.S. DOE
[DE-AC02-06CH11357]
FX This work is financially supported by NSF CAREER awards 0746810 and by
the United States Air Force Research Laboratory under contract number
FA8721-05-C-0002. J.J., K.N., and G.E. acknowledge support from the Army
Research Office through contract number W911NF-09-1-0435. Use of the
Advanced Photon Source, an Office of Science User Facility operated for
the U.S. Department of Energy (DOE) Office of Science by Argonne
National Laboratory, was supported by the U.S. DOE under Contract No.
DE-AC02-06CH11357.
NR 23
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U1 2
U2 33
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0957-4522
EI 1573-482X
J9 J MATER SCI-MATER EL
JI J. Mater. Sci.-Mater. Electron.
PD MAR
PY 2014
VL 25
IS 3
BP 1188
EP 1192
DI 10.1007/s10854-014-1707-7
PG 5
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Applied; Physics, Condensed Matter
SC Engineering; Materials Science; Physics
GA AB4EV
UT WOS:000331743200007
ER
PT J
AU Dicaro, D
Bowen, C
Dalton, SR
AF Dicaro, Dane
Bowen, Casey
Dalton, Scott R.
TI Dermatomyositis associated with anti-tumor necrosis factor therapy in a
patient with psoriasis
SO JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY
LA English
DT Letter
C1 [Dicaro, Dane; Bowen, Casey; Dalton, Scott R.] San Antonio Mil Med Ctr, Dept Med, Dermatol Sect, Ft Sam Houston, TX USA.
RP Bowen, C (reprint author), SAUSHEC Dermatol, 2200 Bergquist Dr,Suite 1, Lackland AFB, TX 78236 USA.
EM caseybowen@gmail.com
NR 4
TC 1
Z9 1
U1 0
U2 2
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0190-9622
J9 J AM ACAD DERMATOL
JI J. Am. Acad. Dermatol.
PD MAR
PY 2014
VL 70
IS 3
BP E64
EP E65
DI 10.1016/j.jaad.2013.11.012
PG 3
WC Dermatology
SC Dermatology
GA AB2FA
UT WOS:000331607400009
PM 24528921
ER
PT J
AU Walsh, MM
Anderson, JR
AF Walsh, Matthew M.
Anderson, John R.
TI Navigating Complex Decision Spaces: Problems and Paradigms in Sequential
Choice
SO PSYCHOLOGICAL BULLETIN
LA English
DT Article
DE reinforcement learning; sequential choice; temporal credit assignment
ID ANTERIOR CINGULATE CORTEX; REINFORCEMENT LEARNING-MODELS; ORBITAL
PREFRONTAL CORTEX; ERROR-RELATED NEGATIVITY; DOPAMINE NEURONS ENCODE;
BASAL GANGLIA; HUMAN BRAIN; PREDICTION ERROR; DORSOLATERAL STRIATUM;
ORBITOFRONTAL CORTEX
AB To behave adaptively, we must learn from the consequences of our actions. Doing so is difficult when the consequences of an action follow a delay. This introduces the problem of temporal credit assignment. When feedback follows a sequence of decisions, how should the individual assign credit to the intermediate actions that comprise the sequence? Research in reinforcement learning provides 2 general solutions to this problem: model-free reinforcement learning and model-based reinforcement learning. In this review, we examine connections between stimulus-response and cognitive learning theories, habitual and goal-directed control, and model-free and model-based reinforcement learning. We then consider a range of problems related to temporal credit assignment. These include second-order conditioning and secondary reinforcers, latent learning and detour behavior, partially observable Markov decision processes, actions with distributed outcomes, and hierarchical learning. We ask whether humans and animals, when faced with these problems, behave in a manner consistent with reinforcement learning techniques. Throughout, we seek to identify neural substrates of model-free and model-based reinforcement learning. The former class of techniques is understood in terms of the neurotransmitter dopamine and its effects in the basal ganglia. The latter is understood in terms of a distributed network of regions including the prefrontal cortex, medial temporal lobes, cerebellum, and basal ganglia. Not only do reinforcement learning techniques have a natural interpretation in terms of human and animal behavior but they also provide a useful framework for understanding neural reward valuation and action selection.
C1 [Walsh, Matthew M.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Anderson, John R.] Carnegie Mellon Univ, Dept Psychol, Pittsburgh, PA 15213 USA.
RP Walsh, MM (reprint author), Air Force Res Lab, HPW RHAC Cognit Models & Agents Branch 711, 2620 Q St,Bldg 852, Wright Patterson AFB, OH 45433 USA.
EM matthew.walsh.ctr@wpafb.af.mil
FU National Institute of Mental Health [T32MH019983, MH068243]
FX This work was supported by National Institute of Mental Health Training
Grant T32MH019983 to Matthew M. Walsh and National Institute of Mental
Health Grant MH068243 to John R. Anderson.
NR 212
TC 5
Z9 5
U1 9
U2 26
PU AMER PSYCHOLOGICAL ASSOC
PI WASHINGTON
PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 USA
SN 0033-2909
EI 1939-1455
J9 PSYCHOL BULL
JI Psychol. Bull.
PD MAR
PY 2014
VL 140
IS 2
BP 466
EP 486
DI 10.1037/a0033455
PG 21
WC Psychology; Psychology, Multidisciplinary
SC Psychology
GA AB5RC
UT WOS:000331845100005
PM 23834192
ER
PT J
AU Sills, AC
West, GN
Fennig, EA
Grimshaw, MP
Johnson, MT
Kanskar, M
Choquette, KD
Leisher, PO
AF Sills, Alec C.
West, Gavin N.
Fennig, Eryn A.
Grimshaw, Mike P.
Johnson, Matthew T.
Kanskar, Manoj
Choquette, Kent D.
Leisher, Paul O.
TI In-Phase Coherently-Coupled Optically-Pumped VECSEL Array
SO IEEE PHOTONICS TECHNOLOGY LETTERS
LA English
DT Article
DE Diode lasers; coherent coupling; VECSEL arrays
ID LASER; POWER
AB We report on an optically pumped vertical-external-cavity surface-emitting laser array exhibiting coherent coupling. Imaging of the far field shows interference consistent with in-phase coherent coupling, and a majority of total power is present in the central on-axis lobe. The physical mechanism of operation is attributed to diffractive coupling, wherein a small portion of the light emitting from each emitter is shared with adjacent emitters of the array.
C1 [Sills, Alec C.; West, Gavin N.; Leisher, Paul O.] Rose Hulman Inst Technol, Terre Haute, IN 47803 USA.
[Fennig, Eryn A.] Univ Rochester, Rochester, NY 14627 USA.
[Grimshaw, Mike P.; Kanskar, Manoj] nLight Corp, Vancouver, WA 98665 USA.
[Johnson, Matthew T.] US Air Force, Colorado Springs, CO 80840 USA.
[Choquette, Kent D.] Univ Illinois, Urbana, IL 61801 USA.
RP Sills, AC (reprint author), Rose Hulman Inst Technol, Terre Haute, IN 47803 USA.
EM sillsac@rose-hulman.edu; westgn@rose-hulman.edu; fennigea@gmail.com;
mike.grimshaw@nlight.net; mtjohns2@illinois.edu;
manoj.kanskar@nlight.net; choquett@illinois.edu; pleisher@ieee.org
FU U.S. High Energy Laser Joint Technology Office [FA9451-12-D-0184];
[377ABW-2013-0810]
FX This work was supported in part by the U.S. High Energy Laser Joint
Technology Office under Grant FA9451-12-D-0184 and in part by the
Distribution Statement under Grant 377ABW-2013-0810. Distribution
Statement A: Approved for public release; distribution is unlimited
(Case Number: 377ABW-2013-0810).
NR 11
TC 0
Z9 0
U1 1
U2 11
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1041-1135
EI 1941-0174
J9 IEEE PHOTONIC TECH L
JI IEEE Photonics Technol. Lett.
PD MAR 1
PY 2014
VL 26
IS 5
BP 430
EP 432
DI 10.1109/LPT.2013.2295003
PG 3
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA AA8UT
UT WOS:000331371200003
ER
PT J
AU Niedbalski, N
Johnson, D
Patnaik, SS
Banerjee, D
AF Niedbalski, Nicholas
Johnson, Douglas
Patnaik, Soumya S.
Banerjee, Debjyoti
TI Study of a multi-phase hybrid heat exchanger-reactor (HEX reactor): Part
I - Experimental characterization
SO INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
LA English
DT Article
DE Multi-phase flow; HEX reactor; Reacting flow; Flow visualization; Plate
heat exchanger
ID GAS/LIQUID FLOW; PRESSURE-DROP; PERFORMANCE
AB This study focuses on gaining fundamental insights into the sparsely explored area of reacting multiphase flows in a compact heat exchanger. Chevron plate heat exchangers have been demonstrated to possess superior thermal performance, scalability, and mixing capability compared to more traditional shell-in-tube heat exchangers or stirred tank batch reactors. This study explores the hydrodynamic behavior of gas-evolving reacting flows in chevron plate heat exchangers. Experimental characterization of a plate heat exchanger/chemical reactor (in multi-phase flow configuration) utilizing high-speed video and axial pressure measurements was conducted. Existing correlations that were developed using air-water flow in PHEs predicted with acceptable accuracy the total pressure drop in the HEX reactor. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Niedbalski, Nicholas; Patnaik, Soumya S.] Air Force Res Lab, Aerosp Syst Directorate, Power & Controls Div, Mech & Thermal Syst Branch, Wright Patterson AFB, OH 45433 USA.
[Niedbalski, Nicholas; Banerjee, Debjyoti] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA.
[Johnson, Douglas] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Niedbalski, N (reprint author), A236,Bldg 18,1950 5th St, Wright Patterson AFB, OH 45433 USA.
EM nickgonzaga@me.com
NR 14
TC 2
Z9 2
U1 2
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0017-9310
EI 1879-2189
J9 INT J HEAT MASS TRAN
JI Int. J. Heat Mass Transf.
PD MAR
PY 2014
VL 70
BP 1078
EP 1085
DI 10.1016/j.ijheatmasstransfer.2013.10.066
PG 8
WC Thermodynamics; Engineering, Mechanical; Mechanics
SC Thermodynamics; Engineering; Mechanics
GA AA0VF
UT WOS:000330814800102
ER
PT J
AU Niedbalski, N
Johnson, D
Patnaik, SS
Banerjee, D
AF Niedbalski, Nicholas
Johnson, Douglas
Patnaik, Soumya S.
Banerjee, Debjyoti
TI Study of a multi-phase hybrid heat exchanger-reactor (HEX reactor): Part
II - Numerical prediction of thermal performance
SO INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
LA English
DT Article
DE Ammonium carbamate; HEX reactor; Thermal management; Plate heat
exchanger; Reacting flow; Multi-phase flow
ID PRESSURE-DROP; 2-PHASE FLOW; GAS/LIQUID FLOW; NEW-MODEL; EQUILIBRIUM;
PLATES
AB Numerical models were developed to assess the thermal performance of a HEX reactor with solid-to-gas reacting flow. Based on the experimental results obtained in part I of this study, numerical models were developed to predict the thermal performance of a plate heat exchanger-based HEX reactor involving multi-phase flow with chemical reactions. A reduced-order numerical model of a chevron plate heat exchanger was developed with thermal and momentum transfer analogies. Empirical correlations for momentum transfer and void fraction (validated in part I of this study) were implemented in the numerical model. The numerical model, coded in Maple 13 (TM), was used to size a compact reactor with a thermal load rating of 2 kW for the desired operating temperature; the modeling framework developed can also be used to study different candidate gas-generating reacting species, working fluids, and PHE configurations. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Niedbalski, Nicholas; Patnaik, Soumya S.] Air Force Res Lab, Aerosp Syst Directorate, Power & Controls Div, Mech & Thermal Syst Branch, Wright Patterson AFB, OH 45433 USA.
[Niedbalski, Nicholas; Banerjee, Debjyoti] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA.
[Johnson, Douglas] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Niedbalski, N (reprint author), Air Force Res Lab, Aerosp Syst Directorate, Power & Controls Div, Mech & Thermal Syst Branch, A236,Bldg 18,1950 5th St, Wright Patterson AFB, OH 45433 USA.
EM nickgonzaga@me.com
NR 36
TC 3
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U1 3
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0017-9310
EI 1879-2189
J9 INT J HEAT MASS TRAN
JI Int. J. Heat Mass Transf.
PD MAR
PY 2014
VL 70
BP 1086
EP 1094
DI 10.1016/i.ijheatmasstransfer.2013.10.067
PG 9
WC Thermodynamics; Engineering, Mechanical; Mechanics
SC Thermodynamics; Engineering; Mechanics
GA AA0VF
UT WOS:000330814800103
ER
PT J
AU Drummond, JD
AF Drummond, Jack D.
TI BINARY STARS OBSERVED WITH ADAPTIVE OPTICS AT THE STARFIRE OPTICAL RANGE
SO ASTRONOMICAL JOURNAL
LA English
DT Article
DE binaries: close; binaries: general; binaries: visual; instrumentation:
adaptive optics
ID VISUAL BINARIES; ORBITS; SYSTEMS
AB In reviewing observations taken of binary stars used as calibration objects for non-astronomical purposes with adaptive optics on the 3.5 m Starfire Optical Range telescope over the past 2 years, one-fifth of them were found to be off-orbit. In order to understand such a high number of discrepant position angles and separations, all previous observations in the Washington Double Star Catalog for these rogue binaries were obtained from the Naval Observatory. Adding our observations to these yields new orbits for all, resolving the discrepancies. We have detected both components of gamma Gem for the first time, and we have shown that 7 Cam is an optical pair, not physically bound.
C1 Air Force Res Lab, Directed Energy Directorate, RDSAM, Kirtland AFB, NM 87117 USA.
RP Drummond, JD (reprint author), Air Force Res Lab, Directed Energy Directorate, RDSAM, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA.
NR 24
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U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-6256
EI 1538-3881
J9 ASTRON J
JI Astron. J.
PD MAR
PY 2014
VL 147
IS 3
AR 65
DI 10.1088/0004-6256/147/3/65
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AA5HB
UT WOS:000331125600020
ER
PT J
AU Heffernen, JJ
Hartsfield, CR
Reeder, MF
Polanka, MD
AF Heffernen, J. J.
Hartsfield, C. R.
Reeder, M. F.
Polanka, M. D.
TI Horizontally issuing diffusion flames characterized by OH-PLIF and
visualizations
SO INTERNATIONAL JOURNAL OF SPRAY AND COMBUSTION DYNAMICS
LA English
DT Article
ID PAH FORMATION; JET; BUOYANCY
AB Planar laser induced fluorescence and flame visualizations characterized the effect of buoyancy on the behavior of the combustion zone of diffusion jet flames which issued from horizontally-oriented tubes into ambient air. The study focused on the mixing characteristics of propane and ethylene at Reynolds numbers ranging from 300 to 1500 in the near field of the jet (up to X/D =9) and Froude numbers ranging as low as 0.36, based on cold-flow gas properties and conditions. Performing the study with a variety of fuel tube diameters enabled independent control of Froude and Reynolds numbers. The PUCE visualizations revealed the presence of the hydroxyl radical in the mixing layer for all cases. The hydroxyl concentrations were consistently higher in the upper portion of the mixing layer, indicative of more vigorous mixing in this region. The visualizations also revealed the evolution of polycyclic aromatic hydrocarbons which were initially spatially segregated from the portion of the reaction zone containing the hydroxyl radical. The polycyclic aromatic hydrocarbons initiate in fuel-rich regions nearer to the jet core than the hydroxyl radical, though the two regions eventually combine well downstream of the tube exit. Both the hydroxyl radical and the polycyclic aromatic hydrocarbons were more prominent on the upper side of the jet flame. Both propane and ethylene fuels led to qualitatively similar features of the flow field, indicating the important role played by the buoyancy-influenced fluid dynamics of the combustion products. The resulting cross sectional PUT images were used to produce a three-dimensional representation of the reaction zone, indicating the jet spread and trajectory. The data was empirically correlated and found to collapse when based on the Froude number consistent with the density and temperature of a fully-reacted stoichiometric mixture. Complementary visualizations provided additional insight into the trajectory of the jet flame and revealed features of the reaction zone farther from the tube exit.
C1 [Heffernen, J. J.; Hartsfield, C. R.; Reeder, M. F.; Polanka, M. D.] Wright Patterson Air Force Base, Air Force Inst Technol, Dayton, OH 45433 USA.
RP Reeder, MF (reprint author), Wright Patterson Air Force Base, Air Force Inst Technol, Dayton, OH 45433 USA.
EM mark.reeder@afit.edu
FU United States Air Force Office of Scientific Research
FX The views expressed in this article are those of the authors and do not
reflect the official policy or position of the United States Air Force,
Department of Defense, or the U.S. Government. This work was a grant
from the United States Air Force Office of Scientific Research, and the
authors would like to thank contract monitor, Dr. Julian Tishkoff for
his oversight of the project. The authors of this paper would also like
to acknowledge Dr. Cam Carter of the Air Force Research Laboratory,
Propulsion Directorate for assistance in interpreting the PUP data. The
authors would also like to thank Mr. John Hixenbaugh and Jay Anderson
from the Air Force Institute of Technology for assisting with the
experiment.
NR 26
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U1 1
U2 11
PU MULTI-SCIENCE PUBL CO LTD
PI BRENTWOOD
PA 5 WATES WAY, BRENTWOOD CM15 9TB, ESSEX, ENGLAND
SN 1756-8277
J9 INT J SPRAY COMBUST
JI Int. J. Spray Combust. Dyn.
PD MAR
PY 2014
VL 6
IS 1
BP 35
EP 65
PG 31
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA AA2MX
UT WOS:000330929800003
ER
PT J
AU Pilchak, AL
AF Pilchak, Adam L.
TI A simple model to account for the role of microtexture on fatigue and
dwell fatigue lifetimes of titanium alloys
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Titanium; Fatigue; Dwell fatigue; Microtexture; Crack growth
ID ALPHA-TITANIUM; CRACK-GROWTH; ORIENTATION
AB A deterministic model to account for the effect of initial crack size, microtextured region size and aspect ratio on the mean cyclic and dwell fatigue lifetimes of titanium alloys is described. The model also quantifies variability in lifetime from sample to sample due to differences in the position of subsurface crack initiation. The results indicate that dwell fatigue life and cyclic fatigue life depend most on microtexture region size and initial crack size, respectively. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
C1 AFRLIRXCM, Mat & Mfg Directorate, Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Pilchak, AL (reprint author), AFRLIRXCM, Mat & Mfg Directorate, Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
EM adam.pilchak.1@us.af.mil
FU Air Force Office of Scientific Research [12RX01COR]
FX This work was performed as part of the inhouse research activities of
the Air Force Research Laboratory's Materials and Manufacturing
Directorate and was supported by the Air Force Office of Scientific
Research (Task No. 12RX01COR, Dr. Ali Sayir, Program Manager). The
author would like to acknowledge Dr. P. Golden for providing a portion
of the source code used this work and M.E. Harr for assistance with
parametric studies and data reduction.
NR 19
TC 9
Z9 10
U1 7
U2 38
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD MAR
PY 2014
VL 74
BP 68
EP 71
DI 10.1016/j.scriptamat.2013.10.024
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA AA2HH
UT WOS:000330915200015
ER
PT J
AU Yi, F
AF Yi, Fia
TI The Future of Quality Measurement in the United States
SO CLINICS IN COLON AND RECTAL SURGERY
LA English
DT Article
DE ACS NSQIP; quality improvement; process measures; colorectal surgery
ID SURGICAL SITE INFECTION; IMPROVEMENT-PROGRAM; COMPOSITE MEASURES;
AMERICAN-COLLEGE; HOSPITAL QUALITY; ACS NSQIP; MORTALITY; OUTCOMES;
CARE; PERFORMANCE
AB The need to practice cost efficient medicine and provide it in the safest way possible is paving the way for quality improvement (QI) programs to take off. American College of Surgeons National Surgical QI Project and Surgical Care and Outcomes Assessment Program are some of the leading examples and have provided useful data to evaluate our systems and decrease morbidity and mortality. With proven outcomes driving morbidity and mortality rates down, we have to wonder how to refine these measures to make them more relevant to specialty surgeries such as colorectal. On the contrary, participation in programs like these has placed extended requirements on hospitals and physicians. In addition, some of the quality measures may be inaccurately identifying low and high performing hospitals and individuals because of inherent flaws in the database. This could potentially be in conflict with the mission of these programs. What will be presented are some alternatives and different directions QI is moving toward.
C1 [Yi, Fia] Univ Nevada, Sch Med, Mike OCallaghan Fed Med Ctr, Div Colorectal Surg, Nellis AFB, NV USA.
RP Yi, F (reprint author), Mike OCallaghan Fed Med Ctr, 4700 N Las Vegas Blvd, Nellis AFB, NV 89191 USA.
EM fiayi@yahoo.com
NR 31
TC 1
Z9 1
U1 0
U2 0
PU THIEME MEDICAL PUBL INC
PI NEW YORK
PA 333 SEVENTH AVE, NEW YORK, NY 10001 USA
SN 1531-0043
EI 1530-9681
J9 CLIN COLON RECT SURG
JI Clin. Colon Rectal Surg.
PD MAR
PY 2014
VL 27
IS 1
BP 32
EP 37
DI 10.1055/s-0034-1366917
PG 6
WC Gastroenterology & Hepatology; Surgery
SC Gastroenterology & Hepatology; Surgery
GA CL3VN
UT WOS:000356879400008
PM 24587702
ER
PT J
AU Pakmehr, M
Fitzgerald, N
Feron, EM
Shamma, JS
Behbahani, A
AF Pakmehr, Mehrdad
Fitzgerald, Nathan
Feron, Eric M.
Shamma, Jeff S.
Behbahani, Alireza
TI Gain Scheduled Control of Gas Turbine Engines: Stability and
Verification
SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE
ASME
LA English
DT Article
ID SLOWLY VARYING INPUTS; NONLINEAR-SYSTEMS; TURBOFAN ENGINE; DESIGN
AB A stable gain scheduled controller for a gas turbine engine that drives a variable pitch propeller is developed and described. A stability proof is developed for gain scheduled closed-loop system using global linearization and linear matrix inequality (LMI) techniques. Using convex optimization tools, a single quadratic Lyapunov function is computed for multiple linearizations near equilibrium and nonequilibrium points of the nonlinear closed-loop system. This approach guarantees stability of the closed-loop gas turbine engine system. To verify the stability of the closed-loop system on-line, an optimization problem is proposed, which is solvable using convex optimization tools. Simulation results show that the developed gain scheduled controller is capable to regulate a turboshaft engine for large thrust commands in a stable fashion with proper tracking performance.
C1 [Pakmehr, Mehrdad; Feron, Eric M.] Georgia Inst Technol, Sch Aerosp Engn, Atlanta, GA 30332 USA.
[Fitzgerald, Nathan] Aurora Flight Sci Corp, Manassas, VA 20110 USA.
[Shamma, Jeff S.] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA.
[Behbahani, Alireza] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Pakmehr, M (reprint author), Georgia Inst Technol, Sch Aerosp Engn, Atlanta, GA 30332 USA.
EM mehrdad.pakmehr@gatech.edu; nfitz@alum.mit.edu; feron@gatech.edu;
shamma@gatech.edu; alireza.behbahani@wpafb.af.mil
FU Air Force Research Laboratory (AFRL) [FA9550-10-C-0039]; National
Science Foundation (NSF) [1135955]
FX This material is based upon the work supported by the Air Force Research
Laboratory (AFRL) under the Contract No. FA9550-10-C-0039, and also the
National Science Foundation (NSF) under the Grant No. 1135955.
NR 52
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U1 2
U2 13
PU ASME
PI NEW YORK
PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0742-4795
EI 1528-8919
J9 J ENG GAS TURB POWER
JI J. Eng. Gas. Turbines Power-Trans. ASME
PD MAR
PY 2014
VL 136
IS 3
AR 031201
DI 10.1115/1.4025637
PG 15
WC Engineering, Mechanical
SC Engineering
GA 293AI
UT WOS:000329943400001
ER
PT J
AU Bohan, BT
Blunck, DL
Polanka, MD
Kostka, S
Jiang, NB
Stouffer, SD
AF Bohan, Brian T.
Blunck, David L.
Polanka, Marc D.
Kostka, Stanislav
Jiang, Naibo
Stouffer, Scott D.
TI Impact of an Upstream Film-Cooling Row on Mitigation of Secondary
Combustion in a Fuel Rich Environment
SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME
LA English
DT Article
ID ENGINE DURABILITY IMPACTS; AIR RATIO COMBUSTORS; HEAT RELEASE; TURBINE;
FLAMES
AB In advanced gas turbine engines that feature very short combustor sections, an issue of fuel-rich gases interacting with the downstream turbine components can exist. Specifically, in combustors with high fuel-to-air ratios, there are regions downstream of the primary combustion section that will require the use of film-cooling in the presence of incompletely reacted exhaust. Additional combustion reactions resulting from the combination of unburnt fuel and oxygen-rich cooling films can cause significant damage to the turbine. Research has been accomplished to understand this secondary reaction process. This experimental film-cooling study expands the previous investigations by attempting to reduce or mitigate the increase in heat flux that results from secondary combustion in the coolant film. Two different upstream cooling schemes were used to attempt to protect a downstream fan-shaped cooling row. The heat flux downstream was measured and compared between ejection with air compared to nitrogen in the form of a heat flux augmentation. Planar Laser Induced Fluorescence (PLIF) was used to measure relative OH concentration in the combustion zones to understand where the reactions occurred. A double row of staggered normal holes was unsuccessful at reducing the downstream heat load. The coolant separated from the surface generating a high mixing regime and allowed the hot unreacted gases to penetrate underneath the jets. Conversely, an upstream slot row was able to generate a spanwise film of coolant that buffered the reactive gases off the surface. Essentially no secondary reactions were observed aft of the shaped coolant hole ejection with the protective slot upstream. A slight increase in heat transfer was attributed to the elevated freestream temperature resulting from reactions above the slot coolant. Creating this full sheet of coolant will be a key toward future designs attempting to control secondary reactions in the turbine.
C1 [Bohan, Brian T.; Blunck, David L.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Polanka, Marc D.] Air Force Inst Technol, Wright Patterson AFB, OH 45433 USA.
[Kostka, Stanislav; Jiang, Naibo] Spectral Energies LLC, Dayton, OH 45431 USA.
[Stouffer, Scott D.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Bohan, BT (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
EM Brian.Bohan@eglin.af.mil; David.Blunck@wpafb.af.mil;
Marc.Polanka@afit.edu; stanislavkostka@snet.net;
Naibo.Jiang.ctr@wpafb.af.mil; Scott.Stouffer.ctr@wpafb.af.mil
NR 18
TC 1
Z9 1
U1 2
U2 15
PU ASME
PI NEW YORK
PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0889-504X
EI 1528-8900
J9 J TURBOMACH
JI J. Turbomach.-Trans. ASME
PD MAR
PY 2014
VL 136
IS 3
AR 031008
DI 10.1115/1.4024690
PG 8
WC Engineering, Mechanical
SC Engineering
GA 283MA
UT WOS:000329249000008
ER
PT J
AU Fairchild, SB
Bulmer, JS
Sparkes, M
Boeckl, J
Cahay, M
Back, T
Murray, PT
Gruen, G
Lange, M
Lockwood, NP
Orozco, F
O'Neill, W
Paukner, C
Koziol, KKK
Kozlowski, G
AF Fairchild, Steven B.
Bulmer, John S.
Sparkes, Martin
Boeckl, John
Cahay, Marc
Back, Tyson
Murray, P. Terrence
Gruen, Gregg
Lange, Matthew
Lockwood, Nathaniel P.
Orozco, Francisco
O'Neill, William
Paukner, Catharina
Koziol, Krzysztof K. K.
Kozlowski, Gregory
TI Field Emission from Laser Cut CNT Fibers and Films (vol 29, pg 392,
2014)
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Correction
C1 [Fairchild, Steven B.; Boeckl, John] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Bulmer, John S.; Paukner, Catharina; Koziol, Krzysztof K. K.] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England.
[Sparkes, Martin; Orozco, Francisco; O'Neill, William] Univ Cambridge, Inst Mfg, Dept Engn, Cambridge CB3 0FS, England.
[Cahay, Marc] Univ Cincinnati, Spintron & Vacuum Nanoelect Lab, Cincinnati, OH 45221 USA.
[Back, Tyson; Murray, P. Terrence] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Gruen, Gregg; Lange, Matthew] TechFlow Sci, Albuquerque, NM 87110 USA.
[Lockwood, Nathaniel P.] Air Force Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
[Kozlowski, Gregory] Wright State Univ, Dept Phys, Dayton, OH 45435 USA.
RP Fairchild, SB (reprint author), Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
NR 2
TC 0
Z9 0
U1 3
U2 10
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
EI 2044-5326
J9 J MATER RES
JI J. Mater. Res.
PD FEB 28
PY 2014
VL 29
IS 4
BP 606
EP 606
DI 10.1557/jmr.2014.10
PG 1
WC Materials Science, Multidisciplinary
SC Materials Science
GA AI8RK
UT WOS:000337191100017
ER
PT J
AU Hearn, J
Eichler, J
Hare, C
Henley, M
AF Hearn, John
Eichler, Jeffery
Hare, Christopher
Henley, Michael
TI Effect of soil moisture on chlorine deposition
SO JOURNAL OF HAZARDOUS MATERIALS
LA English
DT Article
DE Chlorine deposition; Soil moisture; Toxic industrial chemical
ID TRANSPORT; CL-2; RELEASE; MODELS
AB The effect of soil moisture on chlorine (Cl-2) deposition was examined in laboratory chamber experiments at high Cl-2 exposures by measuring the concentration of chloride (Cl-) in soil columns. Soil mixtures with varying amounts of clay, sand, and organic matter and with moisture contents up to 20% (w/w) were exposed to approximate to 3 x 10(4) ppm Cl-2 vapor. For low water content soils, additional water increased the reaction rate as evidenced by higher Cl- concentration at higher soil moisture content. Results also showed that the presence of water restricted transport of Cl-2 into the soil columns and caused lower overall deposition of Cl-2 in the top 0.48-cm layer of soil when Cl-2 filled approximate to 60% or more of the void space in the column. Numerical solutions to partial differential equations of Fick's law of diffusion and a simple rate law for Cl-2 reaction corroborated conclusions derived from the data. For the soil mixtures and conditions of these experiments, moisture content that filled 30-50% of the available void space yielded the maximum amount of Cl-2 deposition in the top 0.48 cm of soil. Published by Elsevier B.V.
C1 [Hearn, John; Hare, Christopher] Air Force Res Lab, Airbase Technol Div, Tyndall AFB, FL 32403 USA.
[Eichler, Jeffery] Universal Technol Corp, Tyndall AFB, FL 32403 USA.
[Henley, Michael] Air Force Civil Engineer Ctr, Tyndall AFB, FL 32403 USA.
RP Hearn, J (reprint author), Lee Univ, Cleveland, TN 37312 USA.
EM jhearn@leeuniversity.edu
FU Chemical Security and Analysis Center (CSAC) of the Department of
Homeland Security
FX We thank the Chemical Security and Analysis Center (CSAC) of the
Department of Homeland Security for supporting this work. CSAC had no
part in the design, execution, or analysis of these experiments. We
thank Welch Tennis Courts, Inc. for generously providing the basalt
clay, and we thank Robert Nichols for help in designing the deposition
chamber.
NR 18
TC 0
Z9 2
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-3894
EI 1873-3336
J9 J HAZARD MATER
JI J. Hazard. Mater.
PD FEB 28
PY 2014
VL 267
BP 81
EP 87
DI 10.1016/j.jhazmat.2013.12.044
PG 7
WC Engineering, Environmental; Engineering, Civil; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA AC8VF
UT WOS:000332812500011
PM 24434132
ER
PT J
AU Sohn, H
Lim, HJ
DeSimio, MP
Brown, K
Derriso, M
AF Sohn, Hoon
Lim, Hyung Jin
DeSimio, Martin P.
Brown, Kevin
Derriso, Mark
TI Nonlinear ultrasonic wave modulation for online fatigue crack detection
SO JOURNAL OF SOUND AND VIBRATION
LA English
DT Article
ID DAMAGE; SPECTROSCOPY
AB This study presents a fatigue crack detection technique using nonlinear ultrasonic wave modulation. Ultrasonic waves at two distinctive driving frequencies are generated and corresponding ultrasonic responses are measured using permanently installed lead zirconate titanate (PZT) transducers with a potential for continuous monitoring. Here, the input signal at the lower driving frequency is often referred to as a 'pumping' signal, and the higher frequency input is referred to as a 'probing' signal. The presence of a system nonlinearity, such as a crack formation, can provide a mechanism for nonlinear wave modulation, and create spectral sidebands around the frequency of the probing signal. A signal processing technique combining linear response subtraction (LRS) and synchronous demodulation (SD) is developed specifically to extract the crack-induced spectral sidebands. The proposed crack detection method is successfully applied to identify actual fatigue cracks grown in metallic plate and complex rating-lug specimens. Finally, the effect of pumping and probing frequencies on the amplitude of the first spectral sideband is investigated using the first sideband spectrogram (FSS) obtained by sweeping both pumping and probing signals over specified frequency ranges. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Sohn, Hoon; Lim, Hyung Jin] Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Taejon 305701, South Korea.
[DeSimio, Martin P.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Brown, Kevin; Derriso, Mark] Air Force Res Lab, Wright Patterson AFB, OH 45430 USA.
RP Lim, HJ (reprint author), Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Taejon 305701, South Korea.
EM limhj87@gmail.com
RI Sohn, Hoon/A-9406-2008
FU Smart IT Convergence System Research Center as Global Frontier Project
[CISS-2012M3A6A6054195]; National Research Laboratory (NRL) Program
[2012-0005630]; National Research Foundation of Korea (NRF); Ministry of
Education, Science and Technology (MEST); U.S. Air Force Research
Laboratory
FX This work was supported by the Smart IT Convergence System Research
Center as Global Frontier Project (CISS-2012M3A6A6054195) and the
National Research Laboratory (NRL) Program (2012-0005630) of National
Research Foundation of Korea (NRF), both funded by the Ministry of
Education, Science and Technology (MEST), and U.S. Air Force Research
Laboratory.
NR 28
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Z9 37
U1 1
U2 24
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0022-460X
EI 1095-8568
J9 J SOUND VIB
JI J. Sound Vibr.
PD FEB 28
PY 2014
VL 333
IS 5
BP 1473
EP 1484
DI 10.1016/j.jsv.2013.10.032
PG 12
WC Acoustics; Engineering, Mechanical; Mechanics
SC Acoustics; Engineering; Mechanics
GA 301SX
UT WOS:000330553500018
ER
PT J
AU Keene, B
Bourham, M
Viswanath, V
Avci, H
Kotek, R
AF Keene, Brandi
Bourham, Mohamed
Viswanath, Vidya
Avci, Huseyin
Kotek, Richard
TI Characterization of Degradation of Polypropylene Nonwovens Irradiated by
gamma-Ray
SO JOURNAL OF APPLIED POLYMER SCIENCE
LA English
DT Article
DE fibers; degradation; polyolefins; textiles
ID MORPHOLOGY; FILMS
AB Polypropylene is a leading commercial, fiber-forming polymer due to its low cost and potential for making high strength fibers. As the polymer of choice in the biomedical field, polypropylene contains only two elements, namely carbon and hydrogen. As a result, it is very hydrophobic and bio-inert lacking biodegradability in the landfill. Meltblown and spunbond polypropylene nonwovens were exposed to -radiation doses up to 25 kGy. The changes in morphology, chemical, thermal, and tensile properties were characterized by various analytical techniques. Following -radiation, the FTIR spectrum illustrated an increase in carbonyl groups suggesting radio-oxidation. Additionally, there was a decrease in thermal and tensile properties indicating deterioration of the polymer. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39917.
C1 [Keene, Brandi] Chem Anal Flight Robins AFB, Robins AFB, Warner Robins, GA 31098 USA.
[Bourham, Mohamed] N Carolina State Univ, Dept Nucl Engn, Raleigh, NC 27695 USA.
[Viswanath, Vidya; Avci, Huseyin; Kotek, Richard] N Carolina State Univ, Coll Text Text Engn Chem & Sci, Raleigh, NC 27695 USA.
RP Kotek, R (reprint author), N Carolina State Univ, Coll Text Text Engn Chem & Sci, Raleigh, NC 27695 USA.
EM rkotek@ncsu.edu
NR 21
TC 1
Z9 1
U1 2
U2 24
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0021-8995
EI 1097-4628
J9 J APPL POLYM SCI
JI J. Appl. Polym. Sci.
PD FEB 15
PY 2014
VL 131
IS 4
AR 39917
DI 10.1002/app.39917
PG 10
WC Polymer Science
SC Polymer Science
GA AA4LD
UT WOS:000331066200002
ER
PT J
AU Michael, JB
Venkateswaran, P
Miller, JD
Slipchenko, MN
Gord, JR
Roy, S
Meyer, TR
AF Michael, James B.
Venkateswaran, Prabhakar
Miller, Joseph D.
Slipchenko, Mikhail N.
Gord, James R.
Roy, Sukesh
Meyer, Terrence R.
TI 100 kHz thousand-frame burst-mode planar imaging in turbulent flames
SO OPTICS LETTERS
LA English
DT Article
ID LASER-INDUCED FLUORESCENCE; STABILIZATION; DIAGNOSTICS; GENERATION;
ENERGY; SYSTEM; JET; OH
AB High-repetition-rate, burst-mode lasers can achieve higher energies per pulse compared with continuously pulsed systems, but the relatively few number of laser pulses in each burst has limited the temporal dynamic range of measurements in unsteady flames. A fivefold increase in the range of timescales that can be resolved by burst-mode laser-based imaging systems is reported in this work by extending a hybrid diode-and flashlamp-pumped Nd: YAG-based amplifier system to nearly 1000 pulses at 100 kHz during a 10 ms burst. This enables an unprecedented burst-mode temporal dynamic range to capture turbulent fluctuations from 0.1 to 50 kHz in flames of practical interest. High pulse intensity enables efficient conversion to the ultraviolet for planar laser-induced fluorescence imaging of nascent formaldehyde and other potential flame radicals. (C) 2014 Optical Society of America
C1 [Michael, James B.; Venkateswaran, Prabhakar; Meyer, Terrence R.] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA.
[Slipchenko, Mikhail N.; Roy, Sukesh] Spectral Energies LLC, Dayton, OH 45431 USA.
[Miller, Joseph D.; Gord, James R.] Aerosp Syst Directorate, AF Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Meyer, TR (reprint author), Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA.
EM trm@iastate.edu
OI Michael, James/0000-0002-9666-114X
FU Air Force Office of Scientific Research; Air Force Research Laboratory
[FA8650-12-C-2200]
FX Funding for this work was provided by the Air Force Office of Scientific
Research (Chiping Li, Program Manager) and the Air Force Research
Laboratory under contract no. FA8650-12-C-2200. The authors are also
grateful for technical assistance from Daniel Diaz, Mark Johnson, and
Allen Barrow of Iowa State University.
NR 21
TC 7
Z9 7
U1 3
U2 13
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
EI 1539-4794
J9 OPT LETT
JI Opt. Lett.
PD FEB 15
PY 2014
VL 39
IS 4
BP 739
EP 742
DI 10.1364/OL.39.000739
PG 4
WC Optics
SC Optics
GA AB4ZG
UT WOS:000331798000004
PM 24562194
ER
PT J
AU Zhu, K
Lund, B
Stern, R
Budy, SM
Smith, DW
Iacono, ST
AF Zhu, Kaizheng
Lund, Benjamin
Stern, Rachel
Budy, Stephen M.
Smith, Dennis W., Jr.
Iacono, Scott T.
TI Synthesis and Characterization of Blue-Light Emissive Carbazole
Containing Perfluorocyclobutyl Arylene Ether Polymers
SO JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
LA English
DT Article
DE conjugated polymers; electrochemical; fluorescence; fluoropolymers;
optics
ID HOLE-TRANSPORTING MATERIALS; EMITTING-DIODES; COPOLYMERS;
POLYCARBAZOLES; CHROMOPHORES; DERIVATIVES; DEVICES
AB A series of N-alkyl/aryl carbazole 3,6-substituted arylene trifluorovinyl ether (TFVE) monomers were synthesized in high purity and yield from a concise four-step synthesis using carbazole as a starting material. Condensate-free, step-growth chain extension of the monomers afforded perfluorocyclobutyl (PFCB) arylene ether homo- and copolymers as solution processable, optically transparent blue-light emissive materials. Arylene TFVE monomers and conversion to PFCB arylene ether polymers were structurally elucidated and purity confirmed by high resolution mass spectroscopy, NMR (H-1, C-13, and F-19) spectroscopy, gel permeation chromatography, and attenuated total reflectance Fourier transform infrared analysis. Thermal analysis by differential scanning calorimetry and thermogravimetric analysis revealed glass transition temperatures >150 degrees C and onset of decomposition in nitrogen >410 degrees C with 40 wt % char yield up to 900 degrees C. Optical and electrochemical studies included solution (tetrahydrofuran) and solid state (spin cast thin film) UV-vis/fluorescence spectroscopy and cyclic voltammetry which showed structure dependence of these blue emissive systems on the nature of the N-alkyl/aryl carbazole substitution in either homo- or copolymer configurations. (c) 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 552-560
C1 [Zhu, Kaizheng] Univ Oslo, Dept Chem, N-0315 Oslo, Norway.
[Lund, Benjamin; Stern, Rachel; Smith, Dennis W., Jr.] Univ Texas Dallas, Dept Chem, Richardson, TX 75080 USA.
[Lund, Benjamin; Stern, Rachel; Smith, Dennis W., Jr.] Univ Texas Dallas, Alan G MacDiarmid NanoTech Inst, Richardson, TX 75080 USA.
[Budy, Stephen M.; Iacono, Scott T.] US Air Force Acad, Dept Chem, Colorado Springs, CO 80840 USA.
[Budy, Stephen M.; Iacono, Scott T.] US Air Force Acad, Chem Res Ctr, Colorado Springs, CO 80840 USA.
RP Smith, DW (reprint author), Univ Texas Dallas, Dept Chem, Richardson, TX 75080 USA.
EM dwsmith@utdallas.edu; scott.iacono@usafa.edu
FU Air Force Office of Scientific Research (AFOSR); DWS by the Welch
Foundation [AT-0041]; Alan G. MacDiarmid NanoTech Institute; National
Science Foundation through the Center for Energy Harvesting Materials
and Systems (NSF-I/UCRC) [1035024]; University of Texas at Dallas
FX STI acknowledges the Air Force Office of Scientific Research (AFOSR) for
financial support. In part, this work was accomplished through support
of DWS by the Welch Foundation (Grant AT-0041), the Alan G. MacDiarmid
NanoTech Institute, the National Science Foundation through the Center
for Energy Harvesting Materials and Systems (NSF-I/UCRC, Grant 1035024),
and the University of Texas at Dallas. We thank Tetramer Technologies,
L.L.C. for donation of starting material. A prior portion of this work
by KZ, SMB, DWS, and STI was performed at Clemson University and the
Center for Optical Materials Science and Engineering Technologies
(COMSET).
NR 31
TC 5
Z9 5
U1 0
U2 20
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-624X
EI 1099-0518
J9 J POLYM SCI POL CHEM
JI J. Polym. Sci. Pol. Chem.
PD FEB 15
PY 2014
VL 52
IS 4
BP 552
EP 560
DI 10.1002/pola.27032
PG 9
WC Polymer Science
SC Polymer Science
GA 282LE
UT WOS:000329171900013
ER
PT J
AU Fairchild, SB
Bulmer, JS
Sparkes, M
Boeckl, J
Cahay, M
Back, T
Murray, PT
Gruen, G
Lange, M
Lockwood, NP
Orozco, F
O'Neill, W
Paukner, C
Koziol, KKK
AF Fairchild, Steven B.
Bulmer, John S.
Sparkes, Martin
Boeckl, John
Cahay, Marc
Back, Tyson
Murray, P. Terrence
Gruen, Gregg
Lange, Matthew
Lockwood, Nathaniel P.
Orozco, Francisco
O'Neill, William
Paukner, Catharina
Koziol, Krzysztof K. K.
TI Field emission from laser cut CNT fibers and films
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID CARBON NANOTUBE FILMS; ELECTRON EMITTERS; YARNS
AB Field emission (FE) measurements are reported from carbon nanotube (CNT) fibers and laser-patterned free standing films fabricated by direct online condensation from a floating catalyst chemical vapor deposition reactor. Fiber and film cathodes showed stable emission in the 1-2 mA current (I) range at maximum cathode temperatures less than 1000 degrees C; film cathodes show localized heating at the triangular tips and higher maximum temperatures than the fibers. Fowler-Nordheim (FN) analysis indicated a change in the morphology of the emitters with increasing external electrical field (E (ext)). Fiber cathode I-E (ext) data are interpreted as FN emission from the fiber tip which is eventually limited by space-charge effects. At higher E (ext), FN emission from the fiber sidewall occurs. The single fiber cathode stopped emitting abruptly when field induced self-heating effects became significant. For CNT films, self-heating effects can destroy a portion of the film, but FE can still occur from other areas.
C1 [Fairchild, Steven B.; Boeckl, John] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Bulmer, John S.; Paukner, Catharina; Koziol, Krzysztof K. K.] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England.
[Sparkes, Martin; Orozco, Francisco; O'Neill, William] Univ Cambridge, Inst Mfg, Dept Engn, Cambridge CB3 0FS, England.
[Cahay, Marc] Univ Cincinnati, Spintron & Vacuum Nanoelect Lab, Cincinnati, OH 45221 USA.
[Murray, P. Terrence] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Gruen, Gregg; Lange, Matthew] TechFlow Sci, Albuquerque, NM 87110 USA.
[Lockwood, Nathaniel P.] Air Force Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
RP Murray, PT (reprint author), Univ Dayton, Res Inst, Dayton, OH 45469 USA.
EM Paul.murray@udri.udayton.edu
FU Air Force contract at the Materials & Manufacturing Directorate
(AFRL/RXAP) [FA8650-11-D-5401]
FX This work was supported by Air Force contract FA8650-11-D-5401 at the
Materials & Manufacturing Directorate (AFRL/RXAP) The authors thank John
Luginsland at AFOSR and Scott Dudley and Victor Putz of EOARD for their
support.
NR 36
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U1 1
U2 34
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
EI 2044-5326
J9 J MATER RES
JI J. Mater. Res.
PD FEB 14
PY 2014
VL 29
IS 3
BP 392
EP 402
DI 10.1557/jmr.2013.322
PG 11
WC Materials Science, Multidisciplinary
SC Materials Science
GA AB7IJ
UT WOS:000331962700009
ER
PT J
AU Bresnehan, MS
Hollander, MJ
Wetherington, M
Wang, K
Miyagi, T
Pastir, G
Snyder, DW
Gengler, JJ
Voevodin, AA
Mitchel, WC
Robinson, JA
AF Bresnehan, Michael S.
Hollander, Matthew J.
Wetherington, Maxwell
Wang, Ke
Miyagi, Takahira
Pastir, Gregory
Snyder, David W.
Gengler, Jamie J.
Voevodin, Andrey A.
Mitchel, William C.
Robinson, Joshua A.
TI Prospects of direct growth boron nitride films as substrates for
graphene electronics
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
DE polyborazylene; hexagonal boron nitride; h-BN; graphene; dielectric;
CVD; ammonia borane; transition metal dichalcogenides
ID HIGH-QUALITY; POLYMERIC PRECURSOR; EPITAXIAL GRAPHENE; CVD;
SPECTROSCOPY; LAYER; BN; INTEGRATION; COMPOSITES; TRANSPORT
AB We present a route for direct growth of boron nitride via a polyborazylene to h-BN conversion process. This two-step growth process ultimately leads to a >25x reduction in the root-mean-square surface roughness of h-BN films when compared to a high temperature growth on Al2O3(0001) and Si(111) substrates. Additionally, the stoichiometry is shown to be highly dependent on the initial polyborazylene deposition temperature. Importantly, chemical vapor deposition (CVD) graphene transferred to direct-grown boron nitride films on Al2O3 at 400 degrees C results in a >1.5x and >2.5x improvement in mobility compared to CVD graphene transferred to Al2O3 and SiO2 substrates, respectively, which is attributed to the combined reduction of remote charged impurity scattering and surface roughness scattering. Simulation of mobility versus carrier concentration confirms the importance of limiting the introduction of charged impurities in the h-BN film and highlights the importance of these results in producing optimized h-BN substrates for high performance graphene and TMD devices.
C1 [Bresnehan, Michael S.; Wetherington, Maxwell; Miyagi, Takahira; Robinson, Joshua A.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
[Bresnehan, Michael S.; Wetherington, Maxwell; Pastir, Gregory; Snyder, David W.] Penn State Univ, Elect Opt Ctr, University Pk, PA 16802 USA.
[Bresnehan, Michael S.; Hollander, Matthew J.; Robinson, Joshua A.] Penn State Univ, Ctr Dimens & Layered Mat 2, University Pk, PA 16802 USA.
[Wang, Ke; Miyagi, Takahira] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA.
[Snyder, David W.] Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA.
[Gengler, Jamie J.; Voevodin, Andrey A.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Gengler, Jamie J.] Spectral Energies LLC, Dayton, OH 45431 USA.
RP Robinson, JA (reprint author), Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
EM jrobinson@psu.edu
RI Voevodin, Andrey/I-6684-2013
FU Office of Naval Research [N00014-12-C-0124]; Defense Threat Reduction
Agency [HDTRA1-10-1-0093]; Applied Research Laboratory (ARL) Exploratory
and Foundational research assistantship; National Nanotechnology
Infrastructure Network at Penn State
FX This work was supported by the Office of Naval Research, Contract No.
N00014-12-C-0124, and the Defense Threat Reduction Agency, Contract No.
HDTRA1-10-1-0093. Any opinions, findings, conclusions, or
recommendations expressed in this material are those of the authors and
do not necessarily reflect the views of the sponsors. Support for the
WiteC Raman system, Leo 1530 SEM, Bruker Icon AFM, Kratos Axis Ultra
XPS, JEOL 2010F TEM, and nanofabrication facility was provided by the
National Nanotechnology Infrastructure Network at Penn State. Funding
for M. Bresnehan was provided by the Applied Research Laboratory (ARL)
Exploratory and Foundational research assistantship.
NR 41
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U1 5
U2 60
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
EI 2044-5326
J9 J MATER RES
JI J. Mater. Res.
PD FEB 14
PY 2014
VL 29
IS 3
BP 459
EP 471
DI 10.1557/jmr.2013.323
PG 13
WC Materials Science, Multidisciplinary
SC Materials Science
GA AB7IJ
UT WOS:000331962700016
ER
PT J
AU Jones, JG
Sun, LR
Murphy, NR
Back, TC
Lange, MA
Remmert, JL
Murray, PT
Jakubiak, R
AF Jones, John G.
Sun, Lirong
Murphy, Neil R.
Back, Tyson C.
Lange, Matthew A.
Remmert, Jessica L.
Murray, P. Terrence
Jakubiak, Rachel
TI Tunable stoichiometry of BCxNy thin films through multitarget pulsed
laser deposition monitored via in situ ellipsometry (vol 8, 083999,2014)
SO JOURNAL OF NANOPHOTONICS
LA English
DT Correction
C1 [Jones, John G.; Murphy, Neil R.; Jakubiak, Rachel] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Sun, Lirong] Gen Dynam Informat Technol, Dayton, OH 45431 USA.
[Back, Tyson C.; Lange, Matthew A.; Remmert, Jessica L.] Univ Technol Corp, Dayton, OH 45532 USA.
[Murray, P. Terrence] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Jones, JG (reprint author), US Air Force, Res Lab, 3005 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM john.jones.66@us.af.mil
NR 1
TC 0
Z9 0
U1 0
U2 7
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 1934-2608
J9 J NANOPHOTONICS
JI J. Nanophotonics
PD FEB 14
PY 2014
VL 8
AR 089999
PG 1
WC Nanoscience & Nanotechnology; Optics
SC Science & Technology - Other Topics; Optics
GA AB3TL
UT WOS:000331713000001
ER
PT J
AU Hendrickson, J
Soref, R
Sweet, J
Buchwald, W
AF Hendrickson, Joshua
Soref, Richard
Sweet, Julian
Buchwald, Walter
TI Ultrasensitive silicon photonic-crystal nanobeam electro-optical
modulator: Design and simulation
SO OPTICS EXPRESS
LA English
DT Article
ID OPTICAL WAVE-GUIDES; DEPLETION MODULATORS; RESONATORS; JUNCTIONS;
CAVITIES
AB Design and simulation results are presented for an ultralow switching energy, resonator based, silicon-on-insulator (SOI) electro-optical modulator. The nanowire waveguide and Q similar to 8500 resonator are seamlessly integrated via a high-transmission tapered 1D photonic crystal cavity waveguide structure. A lateral p-n junction of modulation length L-m similar to lambda is used to alter the index of refraction and, therefore, shift the resonance wavelength via fast carrier depletion. Differential signaling of the device with Delta V similar to 0.6 Volts allows for a 6dB extinction ratio at telecom wavelengths with an energy cost as low as 14 attojoules/bit. (C) 2014 Optical Society of America
C1 [Hendrickson, Joshua; Sweet, Julian] US Air Force, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
[Soref, Richard; Buchwald, Walter] Univ Massachusetts, Dept Phys, Boston, MA 02125 USA.
[Soref, Richard; Buchwald, Walter] Univ Massachusetts, Engn Program, Boston, MA 02125 USA.
[Sweet, Julian] Wyle Labs, Beavercreek, OH 45431 USA.
RP Hendrickson, J (reprint author), US Air Force, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
EM joshua.hendrickson.4@us.af.mil
FU Air Force Office of Scientific Research [12RY05COR]; AFOSR
[FA9550-10-1-0417]
FX JH and JS would like to acknowledge support from the Air Force Office of
Scientific Research (Program Manager Dr. Gernot Pomrenke) under contract
number 12RY05COR. RS appreciates AFOSR support under grant
FA9550-10-1-0417. All authors thank Matthew Grupen for helpful
discussions.
NR 26
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U1 2
U2 25
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD FEB 10
PY 2014
VL 22
IS 3
BP 3271
EP 3283
DI 10.1364/OE.22.003271
PG 13
WC Optics
SC Optics
GA AC4VB
UT WOS:000332518100111
PM 24663618
ER
PT J
AU Darafsheh, A
Limberopoulos, NI
Derov, JS
Walker, DE
Astratov, VN
AF Darafsheh, Arash
Limberopoulos, Nicholaos I.
Derov, John S.
Walker, Dennis E., Jr.
Astratov, Vasily N.
TI Advantages of microsphere-assisted super-resolution imaging technique
over solid immersion lens and confocal microscopies
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID DIELECTRIC MICROSPHERE; PHOTONIC NANOJETS; OPTICAL NANOSCOPY; FIELD;
RESOLUTION; BACKSCATTERING; NANOPARTICLES; MICROLENS; SYSTEMS; LIGHT
AB We demonstrate a series of advantages of microsphere-assisted imaging over confocal and solid immersion lens microscopies including intrinsic flexibility, better resolution, higher magnification, and longer working distances. We discerned minimal feature sizes of similar to 50-60 nm in nanoplasmonic arrays at the illumination wavelength lambda = 405 nm. It is demonstrated that liquid-immersed, high-index (n similar to 1.9-2.1) spheres provide a superior image quality compared to that obtained by spheres with the same index contrast in an air environment. We estimate that using transparent microspheres at deep UV wavelengths of similar to 200 nm might make possible imaging of various nanostructures with extraordinary high similar to 30 nm resolution. (C) 2014 AIP Publishing LLC.
C1 [Darafsheh, Arash; Astratov, Vasily N.] Univ N Carolina, Ctr Optoelect & Opt Commun, Dept Phys & Opt Sci, Charlotte, NC 28223 USA.
[Limberopoulos, Nicholaos I.; Derov, John S.; Walker, Dennis E., Jr.; Astratov, Vasily N.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Darafsheh, A (reprint author), Univ Penn, Dept Radiat Oncol, Philadelphia, PA 19104 USA.
EM arash.darafsheh@gmail.com; astratov@uncc.edu
RI Astratov, Vasily/D-1089-2012
FU U.S. Army Research Office [W911NF-09-1-0450]; National Science
Foundation [ECCS-0824067]; Center for Metamaterials, an NSF I/U CRC
[1068050]; Air Force Research Laboratory (AFRL/RYD); Alion Science and
Technology
FX This work was supported by the U.S. Army Research Office through Dr. J.
T. Prater under Contract No. W911NF-09-1-0450, by the National Science
Foundation under Grant No. ECCS-0824067, and by Center for
Metamaterials, an NSF I/U CRC, Award No. 1068050. Also, this work was
sponsored by the Air Force Research Laboratory (AFRL/RYD) through the
AMMTIAC contract with Alion Science and Technology.
NR 42
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U1 15
U2 71
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD FEB 10
PY 2014
VL 104
IS 6
AR 061117
DI 10.1063/1.4864760
PG 4
WC Physics, Applied
SC Physics
GA AB5BL
UT WOS:000331803800017
ER
PT J
AU Liu, J
Kim, GH
Xue, YH
Kim, JY
Baek, JB
Durstock, M
Dai, LM
AF Liu, Jun
Kim, Gi-Hwan
Xue, Yuhua
Kim, Jin Young
Baek, Jong-Beom
Durstock, Michael
Dai, Liming
TI Graphene Oxide Nanoribbon as Hole Extraction Layer to Enhance Efficiency
and Stability of Polymer Solar Cells
SO ADVANCED MATERIALS
LA English
DT Article
ID PHOTOVOLTAIC CELLS; CARBON NANOTUBES; PERFORMANCE
AB Graphene oxide nanoribbons for efficient and stable polymer solar cells are discussed. With controllable bandgap, good solubility and film forming property, graphene oxide nanoribbons serve as a new class of excellent hole extraction materials for efficient and stable polymer solar cells outperforming their counterparts based on conventional hole extraction materials, including PEDOT:PSS.
C1 [Liu, Jun; Xue, Yuhua; Dai, Liming] Case Western Reserve Univ, Case Sch Engn, Dept Macromol Sci & Engn, Cleveland, OH 44106 USA.
[Kim, Gi-Hwan; Kim, Jin Young; Baek, Jong-Beom] UNIST, Interdisciplinary Sch Green Energy, Ulsan 689798, South Korea.
[Durstock, Michael] Air Force Res Lab, Mat & Mfg Directorate, RXBP, Wright Patterson AFB, OH 45433 USA.
RP Dai, LM (reprint author), Case Western Reserve Univ, Case Sch Engn, Dept Macromol Sci & Engn, 10900 Euclid Ave, Cleveland, OH 44106 USA.
EM liming.dai@case.edu
RI Baek, Jong-Beom/E-5883-2010; Kim, Jin Young/E-6152-2010
OI Baek, Jong-Beom/0000-0003-4785-2326; Kim, Jin Young/0000-0002-6595-4468
FU AFOSR under the Polymer Chemistry Task in the Directorate of Chemistry
and Life Sciences [FA9550-09-1-0331]; UNIST-BK21+
FX The authors are very grateful for the financial support from AFOSR
(FA9550-09-1-0331) under the Polymer Chemistry Task in the Directorate
of Chemistry and Life Sciences (Dr. Charles Lee - Program Manager).
Partial support from UNIST-BK21+ is also acknowledged.
NR 25
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U1 7
U2 117
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0935-9648
EI 1521-4095
J9 ADV MATER
JI Adv. Mater.
PD FEB 5
PY 2014
VL 26
IS 5
BP 786
EP 790
DI 10.1002/adma.201302987
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA AH3RT
UT WOS:000336043500018
PM 24167012
ER
PT J
AU Jones, JG
Sun, LR
Murphy, NR
Back, TC
Lange, MA
Remmert, JL
Murray, PT
Jakubiak, R
AF Jones, John G.
Sun, Lirong
Murphy, Neil R.
Back, Tyson C.
Lange, Matthew A.
Remmert, Jessica L.
Murray, P. Terrence
Jakubiak, Rachel
TI Tunable stoichiometry of BCxNy thin films through multitarget pulsed
laser deposition monitored via in situ ellipsometry
SO JOURNAL OF NANOPHOTONICS
LA English
DT Article
DE pulsed laser deposition; tunable stoichiometry; ellipsometry;
multitarget
ID AMORPHOUS DIAMOND FILMS; SPECTROSCOPIC ELLIPSOMETRY; ABLATION
AB Pulsed laser deposition is an energetic deposition technique in which thin films are deposited when a laser pulse at 248-nm wavelength strikes a target and material is subsequently deposited onto a substrate with ideally the same stoichiometry. By synchronizing a high-speed mirror system with the pulsing of the laser, and using two separate targets, thin films having tunable stoichiometry have been deposited. Depositions were performed in a high vacuum environment to obtain as much kinetic energy as possible during growth. Typically, some 150 pulses at 300 mJ/pulse were required to deposit 1 nm. Island growth must occur on a per pulse basis since over 100 pulses are required to deposit a 1 nm film thickness. Films were deposited to similar to 100-nm thickness, and in situ ellipsometry data were modeled to calculate thickness, n and k. X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and atomic force microscopy (AFM) were all performed on each of the films. XPS demonstrated change in film composition with change in laser pulse ratio; ellipsometry displayed thickness from the model generated as well as the optical properties from 370 to 1690 nm. AFM thickness measurements were in agreement with independently modeled ellipsometry thickness values. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
C1 [Jones, John G.; Murphy, Neil R.; Jakubiak, Rachel] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Sun, Lirong] Gen Dynam Informat Technol, Dayton, OH 45431 USA.
[Back, Tyson C.; Lange, Matthew A.; Remmert, Jessica L.] Universal Technol Corp, Dayton, OH 45532 USA.
[Murray, P. Terrence] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Jones, JG (reprint author), US Air Force, Res Lab, 3005 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM john.jones.66@us.af.mil
FU Air Force Office of Scientific Research
FX The authors thank the Air Force Office of Scientific Research for
financial support. Adam Waite and Art Safriet are thanked for helping
the develop target and substrate holding mechanisms, Kurt Eyink for
ellipsometry advice and analysis, and Michael Marciniak, Andrey
Voevodin, and David Zelmon for several useful discussions. R.J. was
instrumental in ellipsometry procurement and implementation and optics
train for excimer. P.T.M. aided in chamber design. N.R.M. was involved
in experimental apparatus implementation. L.S. conducted ellipsometric
analysis of samples. T.C.B. performed XPS. J.L.R. performed AFM. M.A.L.
researched BCN details. J.G.J. developed the overall apparatus design,
authored deposition software, developed synchronization of the laser
pulses to the optical mirror system, performed thin film growth with in
situ ellipsometry measurements, and Raman and EDX characterization.
NR 15
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U1 0
U2 12
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 1934-2608
J9 J NANOPHOTONICS
JI J. Nanophotonics
PD FEB 5
PY 2014
VL 8
AR 083999
DI 10.1117/1.JNP.8.083999
PG 12
WC Nanoscience & Nanotechnology; Optics
SC Science & Technology - Other Topics; Optics
GA AB3TD
UT WOS:000331712200001
ER
PT J
AU Music, D
Basse, FHU
Han, L
Devender
Borca-Tasciuc, T
Gengler, JJ
Voevodin, AA
Ramanath, G
Schneider, JM
AF Music, Denis
Basse, Felix H. -U.
Han, Liang
Devender
Borca-Tasciuc, Theo
Gengler, Jamie J.
Voevodin, Andrey A.
Ramanath, Ganpati
Schneider, Jochen M.
TI Multifold Seebeck increase in RuO2 films by quantum-guided lanthanide
dilute alloying
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID OXIDE THERMOELECTRIC-MATERIALS; INITIO MOLECULAR-DYNAMICS;
AUGMENTED-WAVE METHOD; ELECTRON-GAS; TRANSITION; POWER
AB Ab initio predictions indicating that alloying RuO2 with La, Eu, or Lu can increase the Seebeck coefficient alpha manifold due to quantum confinement effects are validated in sputter-deposited La-alloyed RuO2 films showing fourfold alpha increase. Combinatorial screening reveals that alpha enhancement correlates with La-induced lattice distortion, which also decreases the thermal conductivity twentyfold, conducive for high thermoelectric figures of merit. These insights should facilitate the rational design of high efficiency oxide-based thermoelectrics through quantum-guided alloying. (C) 2014 AIP Publishing LLC.
C1 [Music, Denis; Basse, Felix H. -U.; Ramanath, Ganpati; Schneider, Jochen M.] Rhein Westfal TH Aachen, D-52074 Aachen, Germany.
[Han, Liang; Borca-Tasciuc, Theo] Rensselaer Polytech Inst, Dept Mech Aerosp & Nucl Engn, Troy, NY 12180 USA.
[Devender; Ramanath, Ganpati] Rensselaer Polytech Inst, Mat Sci & Engn Dept, Troy, NY 12180 USA.
[Gengler, Jamie J.; Voevodin, Andrey A.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Gengler, Jamie J.] Spectral Energies LLC, Dayton, OH 45431 USA.
RP Music, D (reprint author), Rhein Westfal TH Aachen, Kopernikusstr 10, D-52074 Aachen, Germany.
EM music@mch.rwth-aachen.de
RI Music, Denis/C-2978-2012; Schneider, Jochen/A-4701-2012
OI Music, Denis/0000-0003-2303-3676;
FU Deutsche Forschungsgemeinschaft (DFG) [SCHN 735/24-1]; S3TEC an Energy
Frontier Research Center; U.S. Department of Energy, Office of Basic
Energy Sciences [DE-SC0001299]; NSF [ECCS 1002282]; U.S. Air Force
Research Laboratory [FA8650-07-D-5800]
FX This work was supported by the Deutsche Forschungsgemeinschaft (DFG)
within the Project No. SCHN 735/24-1, the S3TEC an Energy
Frontier Research Center funded by the U.S. Department of Energy, Office
of Basic Energy Sciences under Award DE-SC0001299 and an NSF Grant No.
ECCS 1002282. Funding from the U.S. Air Force Research Laboratory was
provided through Contract No. # FA8650-07-D-5800.
NR 28
TC 7
Z9 7
U1 2
U2 16
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD FEB 3
PY 2014
VL 104
IS 5
AR 053903
DI 10.1063/1.4864078
PG 5
WC Physics, Applied
SC Physics
GA AB2TD
UT WOS:000331644100139
ER
PT J
AU Rizzetta, DP
Visbal, MR
AF Rizzetta, Donald P.
Visbal, Miguel R.
TI Numerical Simulation of Excrescence Generated Transition
SO AIAA JOURNAL
LA English
DT Article
ID LARGE-EDDY SIMULATION; NAVIER-STOKES EQUATIONS; PLASMA-BASED CONTROL;
BOUNDARY-LAYER; FLOW-CONTROL; SCHEMES; FLOWFIELDS; TURBULENCE
AB Numerical computations are carried out to predict the transition generated by excrescence on a platelike geometry in subsonic flow. Both forward-facing and rearward-facing steps of small roughness height are considered in the investigation. These are representative of joints and other surface imperfections on wing sections that disrupt laminar flow, thereby increasing skin friction and drag. Solutions are obtained via a high-fidelity numerical scheme and an implicit time-marching approach on an overset mesh system that is used to represent the steps. Very-small-amplitude numerical forcing is employed to generate perturbations, which are amplified by the geometric disturbances, similar to the physical situation. The flowfield just downstream of the steps is characterized by the growth and breakdown of two-dimensional fluid structures. Because all significant scales of the flow are fully resolved in this region, the solutions there correspond to direct numerical simulations. Further downstream where the flow is more fully turbulent, the calculations are regarded as large-eddy simulations. Details of the numerical procedure are summarized, and features of the flowfields are described, which help to elucidate the transition process. Comparisons are made with the available experimental data in terms of time-mean skin-friction measurements. The locations of transition and skin-friction levels predicted numerically are in close correspondence with the experiments. A grid-resolution study was carried out to confirm the accuracy of the computations. In the fully turbulent region downstream of the transition, calculations agree with the expected behavior, but have not yet evolved to the high-Reynolds-number asymptotic form.
C1 [Rizzetta, Donald P.; Visbal, Miguel R.] US Air Force, Res Lab, Aerodynam Technol Branch, Wright Patterson AFB, OH 45433 USA.
RP Rizzetta, DP (reprint author), US Air Force, Res Lab, Aerodynam Technol Branch, Wright Patterson AFB, OH 45433 USA.
FU U.S. Department of Defense Supercomputing Resource Center at the NASA
Stennis Space Center, Hancock County; MS and Wright-Patterson Air Force
Base, OH; U.S. Air Force Office of Scientific Research
FX The work presented here was sponsored by the U.S. Air Force Office of
Scientific Research, under a task monitored by D. Smith. The authors
wish to thank G. Dale for assistance with this effort. They are also
especially grateful to A. Bender for supplying many details of the
experimental work. The authors are also grateful for many helpful
comments from reviewers and the associate editor. Computational
resources were supported in part by a grant of supercomputer time from
the U.S. Department of Defense Supercomputing Resource Center at the
NASA Stennis Space Center, Hancock County, MS and Wright-Patterson Air
Force Base, OH.
NR 59
TC 6
Z9 6
U1 1
U2 6
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
EI 1533-385X
J9 AIAA J
JI AIAA J.
PD FEB
PY 2014
VL 52
IS 2
BP 385
EP 397
DI 10.2514/1.J052530
PG 13
WC Engineering, Aerospace
SC Engineering
GA AJ6KZ
UT WOS:000337804700013
ER
PT J
AU Engelhardt, KE
Starnes, SL
Hanseman, DJ
Guitron, J
AF Engelhardt, Kathryn E.
Starnes, Sandra L.
Hanseman, Dennis J.
Guitron, Julian
TI Epidural versus Subpleural Analgesia for Pulmonary Resections: A
Comparison of Morbidities
SO AMERICAN SURGEON
LA English
DT Article
ID PAIN MANAGEMENT; THORACOSCOPIC LOBECTOMY; ANESTHETIC INFUSION; MEDIAN
STERNOTOMY; DELIRIUM; SURGERY
AB There are several methods to mitigate the pain that results from thoracic surgery. All of them may be associated with complications. We analyzed the morbidities associated with epidural and subpleural catheter analgesia in patients undergoing pulmonary resections for lung cancer. We conducted a retrospective review of our prospective lung cancer outcomes database for all patients undergoing lobectomy for lung cancer through a thoracotomy or thoracoscopy. All patients had either an epidural or subpleural catheter placed for pain control. One hundred twenty-nine patients met the inclusion criteria. Patients were stratified based on age and pain management technique and the 30-day outcomes were examined. Ninety-three patients had epidural catheters placed and 36 received subpleural catheters. Baseline demographics were similar except for two variables; the subpleural catheter group had a larger proportion of thoracoscopic surgery and more pack-years smoked. Patients in the epidural group were more likely to experience postoperative pruritus and had longer intensive care unit stays but were less likely to use a patient-controlled anesthesia pump. Patients in the subpleural group were more likely to develop intestinal complications. When a subset analysis was done by age (younger than 70 vs 70 years or older), there were no significant differences in postoperative outcomes in the older group. The younger cohort had more pruritus and longer intensive care unit stays in the epidural group. The differences between subpleural and epidural catheters are minimal across all ages and nonexistent for geriatric patients. Thus, the choice of pain management should be determined by individual patient characteristics and risk factors rather than based on age alone.
C1 [Engelhardt, Kathryn E.; Starnes, Sandra L.; Guitron, Julian] Univ Cincinnati, Coll Med, Div Thorac Surg, Cincinnati, OH 45267 USA.
[Hanseman, Dennis J.] Univ Cincinnati, Coll Med, Div Trauma & Crit Care, Cincinnati, OH 45267 USA.
[Starnes, Sandra L.; Guitron, Julian] Vet Affairs Med Ctr, Cincinnati, OH 45267 USA.
[Hanseman, Dennis J.] US Air Force, Ctr Sustainment Trauma & Readiness Skills, Cincinnati, OH USA.
RP Guitron, J (reprint author), Univ Cincinnati, Coll Med, 231 Albert B Sabin Way,POB 670558, Cincinnati, OH 45267 USA.
EM julian.guitron@uc.edu
FU Medical Student Training in Aging Research Grant
FX This study was funded in part by the Medical Student Training in Aging
Research Grant administrated by the American Federation for Aging
Research and the National Institute on Aging.
NR 17
TC 0
Z9 0
U1 0
U2 0
PU SOUTHEASTERN SURGICAL CONGRESS
PI CUMMING
PA 115 SAMARITAN DR, #200, CUMMING, GA 30040-2354 USA
SN 0003-1348
EI 1555-9823
J9 AM SURGEON
JI Am. Surg.
PD FEB
PY 2014
VL 80
IS 2
BP 109
EP 116
PG 8
WC Surgery
SC Surgery
GA AJ5QO
UT WOS:000337740800017
PM 24480209
ER
PT J
AU Ray, JD
Overman, AS
AF Ray, Joel D.
Overman, Angela S.
TI Hard Facts About Soft Skills
SO AMERICAN JOURNAL OF NURSING
LA English
DT Editorial Material
ID CARE; COMMUNICATION; TEAMWORK
C1 [Ray, Joel D.] US Air Force, Nurse Corps, Washington, DC USA.
[Ray, Joel D.] Univ North Carolina UNC Hosp, Chapel Hill, NC USA.
[Overman, Angela S.] UNC Hosp, Chapel Hill, NC 27515 USA.
RP Overman, AS (reprint author), UNC Hosp, Chapel Hill, NC 27515 USA.
EM aoverman@unch.unc.edu
NR 12
TC 1
Z9 1
U1 3
U2 28
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0002-936X
EI 1538-7488
J9 AM J NURS
JI Am. J. Nurs.
PD FEB
PY 2014
VL 114
IS 2
BP 64
EP 68
PG 5
WC Nursing
SC Nursing
GA AH5ZH
UT WOS:000336209700023
PM 24481373
ER
PT J
AU Bryan, CJ
Stephenson, JA
Morrow, CE
Staal, M
Haskell, J
AF Bryan, Craig J.
Stephenson, James A.
Morrow, Chad E.
Staal, Mark
Haskell, Jeremy
TI Posttraumatic Stress Symptoms and Work-Related Accomplishment as
Predictors of General Health and Medical Utilization Among Special
Operations Forces Personnel
SO JOURNAL OF NERVOUS AND MENTAL DISEASE
LA English
DT Article
DE Military; PTSD; health; somatic symptoms; medical utilization;
accomplishment
ID SOMATIC SYMPTOMS; IRAQ WAR; MILITARY PERSONNEL; DEPRESSION; CARE;
ASSOCIATION; SEVERITY; VETERANS; VALIDITY; DISORDER
AB Research has established clear links among posttraumatic stress disorder (PTSD), somatic symptoms, and general health among conventional force military personnel. It is possible that the same relationships exist among Special Operations Force (SOF) personnel, but there are very few, if any, studies that examine these relationships. This study investigated correlates of general health and medical visits among SOF personnel and found that the interaction of somatic and PTSD symptoms was associated with worse health and more frequent medical visits. Follow-up analyses indicated that the interaction of avoidance symptoms with somatic symptoms was significantly associated with worse health, whereas the interaction of emotional numbing with somatic symptoms significantly contributed to increased medical visits. In addition, the results suggest that a sense of accomplishment among SOF personnel may serve as a protective factor against poor health. The results suggest developing interactions among SOF personnel that promote a sense of achievement to ultimately improve the health of the force.
C1 [Bryan, Craig J.] Univ Utah, Natl Ctr Vet Studies, Salt Lake City, UT USA.
[Stephenson, James A.] Univ Air, Maxwell AFB, Montgomery, AL USA.
[Morrow, Chad E.] Hurlburt Field, Mary Esther, FL USA.
[Staal, Mark] Pope Army Air Field, Fayetteville, NC USA.
[Haskell, Jeremy] Nellis AFB, Las Vegas, NV USA.
RP Bryan, CJ (reprint author), Natl Ctr Vet Studies, 260 S Cent Campus Dr,Room 205, Salt Lake City, UT 84112 USA.
EM craig.bryan@utah.edu
OI Bryan, Craig/0000-0002-9714-0733
FU Air Force Medical Support Agency [FA8650-12-2-6277]; Department of the
Army [W81XWH-10-0181]; Department of the Air Force [FA8650-12-2-6277];
Department of the Air Force
FX This study was supported by a grant from the Air Force Medical Support
Agency (FA8650-12-2-6277). The views expressed in this article are those
of the authors and do not necessarily represent the official position or
policy of the US Government, the Department of Defense, or the
Department of the Air Force.; Craig J. Bryan reports grant funding from
the Department of the Army (W81XWH-10-0181) and the Department of the
Air Force (FA8650-12-2-6277), contract funds from the Department of the
Air Force, and an honorarium from CMI Education. James A. Stephenson,
Chad E. Morrow, Mark Staal, and Jeremy Haskell declare no conflicts of
interest or sources of funding.
NR 27
TC 3
Z9 3
U1 2
U2 8
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0022-3018
EI 1539-736X
J9 J NERV MENT DIS
JI J. Nerv. Ment. Dis.
PD FEB
PY 2014
VL 202
IS 2
BP 105
EP 110
DI 10.1097/NMD.0000000000000076
PG 6
WC Clinical Neurology; Psychiatry
SC Neurosciences & Neurology; Psychiatry
GA AH8GP
UT WOS:000336375300005
PM 24469521
ER
PT J
AU Morrison, JJ
Ross, JD
Houston, R
Watson, DB
Sokol, KK
Rasmussen, TE
AF Morrison, Jonathan J.
Ross, James D.
Houston, Robert
Watson, Devin B.
Sokol, Kyle K.
Rasmussen, Todd E.
TI USE OF RESUSCITATIVE ENDOVASCULAR BALLOON OCCLUSION OF THE AORTA IN A
HIGHLY LETHAL MODEL OF NONCOMPRESSIBLE TORSO HEMORRHAGE
SO SHOCK
LA English
DT Article
DE Resuscitative endovascular balloon occlusion of the aorta; REBOA;
noncompressible torso hemorrhage; hemorrhagic shock; resuscitation
ID EMERGENCY-DEPARTMENT THORACOTOMY; ABDOMINAL-TRAUMA; SWINE MODEL; INJURY;
SHOCK; DEATHS; MORTALITY; ANEURYSMS; ACID; CARE
AB Noncompressible torso hemorrhage is a leading cause of death in trauma, with many patients dying before definitive hemorrhage control. Resuscitative endovascular balloon occlusion of the aorta (REBOA) is an adjunct than can be used to expand the window of salvage in patients with end-stage hemorrhagic shock. The aim of this study was to evaluate the effect of continuous and intermittent REBOA (iREBOA) on mortality using a highly lethal porcine model of noncompressible torso hemorrhage. Male splenectomized pigs (70-90 kg) underwent a laparoscopic liver injury (80% resection of left lobe) followed by a 10-min free-bleed period. Animals were then divided into three groups (n = 8) for a 60-min intervention phase (n = 8): continuous occlusion (cREBOA), iREBOA, or no occlusion (nREBOA). Groups then underwent whole blood resuscitation, damage control surgery, and further critical care. Endpoints were mortality and hemodynamic and circulating measures of shock and resuscitation. Systolic blood pressure (in mmHg) at the end of the free-bleed period for cREBOA, iREBOA, and nREBOA was 31 +/- 14, 48 +/- 28, and 28 +/- 17, respectively (P = 0.125). Following the start of the intervention phase, systolic blood pressure was higher in the iREBOA and cREBOA groups compared with the nREBOA (85 +/- 37 and 96 +/- 20 vs. 42 +/- 4; P < 0.001). Overall mortality for the cREBOA, iREBOA, and nREBOA groups was 25.0%, 37.5%, and 100.0% (P = 0.001). Resuscitative endovascular balloon occlusion of the aorta can temporize exsanguinating hemorrhage and restore life-sustaining perfusion, bridging critical physiology to definitive hemorrhage control. Prospective observational studies of REBOA as a hemorrhage control adjunct should be undertaken in appropriate groups of human trauma patients.
C1 [Morrison, Jonathan J.] Royal Ctr Def Med, Acad Dept Mil Surg & Trauma, Birmingham, W Midlands, England.
[Morrison, Jonathan J.] Glasgow Royal Infirm, Acad Surg Unit, Glasgow G4 0SF, Lanark, Scotland.
[Morrison, Jonathan J.; Houston, Robert; Watson, Devin B.; Sokol, Kyle K.; Rasmussen, Todd E.] US Army Inst Surg Res, Ft Sam Houston, TX USA.
[Ross, James D.; Sokol, Kyle K.; Rasmussen, Todd E.] 59th Med Wing, Lackland AFB, TX USA.
[Houston, Robert; Watson, Devin B.; Rasmussen, Todd E.] San Antonio Mil Med Ctr, Dept Surg, Ft Sam Houston, TX USA.
[Rasmussen, Todd E.] Uniformed Serv Univ Hlth Sci, Norman M Rich Dept Surg, Bethesda, MD 20814 USA.
RP Rasmussen, TE (reprint author), USAF MC, US Combat Casualty Care Res Program, 722 Doughten St,Room 3, Ft Detrick, MD 21702 USA.
EM todd.e.rasmussen.mil@mail.mil
OI Morrison, Jonathan/0000-0001-7462-8456
FU US Air Force
FX Funding was received from the US Air Force.
NR 32
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U1 0
U2 4
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1073-2322
EI 1540-0514
J9 SHOCK
JI Shock
PD FEB
PY 2014
VL 41
IS 2
BP 130
EP 137
DI 10.1097/SHK.0000000000000085
PG 8
WC Critical Care Medicine; Hematology; Surgery; Peripheral Vascular Disease
SC General & Internal Medicine; Hematology; Surgery; Cardiovascular System
& Cardiology
GA AH5ZI
UT WOS:000336209800008
PM 24430492
ER
PT J
AU Huang, CS
de La Beaujardiere, O
Roddy, PA
Hunton, DE
Liu, JY
Chen, SP
AF Huang, Chao-Song
de La Beaujardiere, O.
Roddy, P. A.
Hunton, D. E.
Liu, J. Y.
Chen, S. P.
TI Occurrence probability and amplitude of equatorial ionospheric
irregularities associated with plasma bubbles during low and moderate
solar activities (2008-2012)
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
DE equatorial ionosphere; plasma bubbles; ionospheric irregularities;
occurrence probability; scintillation
ID F-REGION IRREGULARITIES; LOW LATITUDE IONOSPHERE; PHASE SCREEN MODEL;
DENSITY IRREGULARITIES; GLOBAL CLIMATOLOGY; HINOTORI SATELLITE; TOPSIDE
IONOSPHERE; IMPEDANCE PROBE; SCINTILLATION; SCATTER
AB We present a statistical analysis of the occurrence probability of equatorial spread F irregularities measured by the Communication/Navigation Outage Forecasting System satellite during 2008-2012. We use different criteria (plasma density perturbations, N, and relative density perturbations, N/N-0) to identify the occurrence of ionospheric irregularities. The purpose of this study is to determine whether the occurrence probability of irregularities is the same for different criteria, whether the patterns of irregularity occurrence vary with solar activity and with local time, and how the patterns of irregularity occurrence are correlated with ionospheric scintillation. It is found that the occurrence probability of irregularities and its variation with local time are significantly different when different identification criteria are used. The occurrence probability based on plasma density perturbations is high in the evening sector and becomes much lower after midnight. In contrast, the occurrence probability based on relative density perturbations is low in the evening sector but becomes very high after midnight in the June solstice. We have also compared the occurrence of ionospheric irregularities with scintillation. The occurrence pattern of the S4 index and its variation with local time are in good agreement with the irregularity occurrence based on plasma density perturbations but are significantly different from those based on relative density perturbations. This study reveals that the occurrence pattern of equatorial ionospheric irregularities varies with local time and that only the occurrence probability of irregularities based on plasma density perturbations is consistent with the occurrence of scintillation at all local times.
Key Points
New occurrence probability of equatorial irregularities is derived Dependence of the irregularity occurrence on local time is identified The occurrence of plasma irregularities is compared with scintillation
C1 [Huang, Chao-Song; de La Beaujardiere, O.; Roddy, P. A.; Hunton, D. E.] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
[Liu, J. Y.; Chen, S. P.] Natl Cent Univ, Inst Space Sci, Chungli, Taiwan.
[Liu, J. Y.] Natl Space Org, Hsinchu, Taiwan.
RP Huang, CS (reprint author), Air Force Res Lab, Kirtland AFB, NM 87117 USA.
EM chaosong.huang@kirtland.af.mil
RI Liu, Jann-Yenq/Q-1668-2015
FU Air Force Research Laboratory; SMC Defense Weather Systems Directorate;
Department of Defense Space Test Program; National Aeronautics and Space
Administration; Naval Research Laboratory; Aerospace Corporation
FX The C/NOFS mission is supported by the Air Force Research Laboratory,
the SMC Defense Weather Systems Directorate, the Department of Defense
Space Test Program, the National Aeronautics and Space Administration,
the Naval Research Laboratory, and The Aerospace Corporation.
NR 31
TC 12
Z9 12
U1 1
U2 11
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD FEB
PY 2014
VL 119
IS 2
BP 1186
EP 1199
DI 10.1002/2013JA019212
PG 14
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AD2CP
UT WOS:000333041000038
ER
PT J
AU Huang, CY
Su, YJ
Sutton, EK
Weimer, DR
Davidson, RL
AF Huang, C. Y.
Su, Y. -J.
Sutton, E. K.
Weimer, D. R.
Davidson, R. L.
TI Energy coupling during the August 2011 magnetic storm
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
DE ionosphere; thermosphere; energy coupling; magnetic storm
ID GEOMAGNETIC STORMS; POLAR-CAP; THERMOSPHERE; DENSITY; CHAMP; MODEL;
JOULE; EARTH; WIND
AB We present results from an analysis of high-latitude ionosphere-thermosphere (IT) coupling to the solar wind during a moderate magnetic storm which occurred on 5-6 August 2011. During the storm, a multipoint set of observations of the ionosphere and thermosphere was available. We make use of ionospheric measurements of electromagnetic and particle energy made by the Defense Meteorological Satellite Program and neutral densities measured by the Gravity Recovery and Climate Experiment satellite to infer (1) the energy budget and (2) timing of the energy transfer process during the storm. We conclude that the primary location for energy input to the IT system may be the extremely high latitude region. We suggest that the total energy available to the IT system is not completely captured either by observation or empirical models.
Key Points
Thermosphere is major sink for storm energy Thermosphere energized in polar cap Models do not capture polar cap interactions
C1 [Huang, C. Y.; Su, Y. -J.; Sutton, E. K.] Air Force Res Lab, Space Vehicles Directorate, Albuquerque, NM 87117 USA.
[Weimer, D. R.; Davidson, R. L.] Virginia Polytech Inst & State Univ, Ctr Space Sci & Engn Res, Blacksburg, VA 24061 USA.
[Weimer, D. R.] Natl Inst Aerosp, Hampton, VA USA.
RP Huang, CY (reprint author), Air Force Res Lab, Space Vehicles Directorate, Albuquerque, NM 87117 USA.
EM cheryl.huang@us.af.mil
RI Sutton, Eric/A-1574-2016
OI Sutton, Eric/0000-0003-1424-7189
FU Air Force Office of Scientific Research Laboratory [LRIR 12RV10COR]
FX The authors thank D.M. Ober, G.R. Wilson, M.R. Hairston, and G.D. Earle
for supplying us with DMSP and C/NOFS data used in this study. This
research was supported by the Air Force Office of Scientific Research
Laboratory Task LRIR 12RV10COR.
NR 48
TC 12
Z9 13
U1 1
U2 7
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD FEB
PY 2014
VL 119
IS 2
BP 1219
EP 1232
DI 10.1002/2013JA019297
PG 14
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AD2CP
UT WOS:000333041000040
ER
PT J
AU Huang, CS
Le, G
de La Beaujardiere, O
Roddy, PA
Hunton, DE
Pfaff, RF
Hairston, MR
AF Huang, Chao-Song
Le, G.
de La Beaujardiere, O.
Roddy, P. A.
Hunton, D. E.
Pfaff, R. F.
Hairston, M. R.
TI Relationship between plasma bubbles and density enhancements:
Observations and interpretation
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
DE Equatorial ionosphere; Plasma bubbles; Plasma enhancements; Plasma blobs
ID EQUATORIAL-SPREAD-F; LOW LATITUDE IONOSPHERE; NONLINEAR EVOLUTION;
HINOTORI SATELLITE; IMPEDANCE PROBE; IRREGULARITIES; BOARD
AB Plasma bubbles are regions of depleted plasma density in the nighttime equatorial ionosphere. Plasma enhancements, also referred as plasma blobs, are regions where the plasma density is increased. It has not been well understood whether and how plasma enhancements are related to plasma bubbles. In this paper, we present the observations of plasma bubbles and enhancements by the Communication/Navigation Outage Forecasting System (C/NOFS) satellite during 2008 and 2009. In some cases, C/NOFS first detected plasma bubbles near the magnetic equator and then plasma enhancements at the same longitudes but at higher latitudes during subsequent orbits. In other cases, C/NOFS first detected plasma enhancements at off-equatorial locations and then plasma bubbles near the magnetic equator at the same longitudes. It is also found that plasma enhancements existed just above plasma depletions. We propose a unified scenario to describe the evolution of plasma bubbles and the formation of plasma enhancements. In the proposed scenario, plasma enhancements can occur at different latitudes and altitudes during the early, intermediate, and late stages of the bubble evolution. This scenario provides a reasonable explanation of the observations.
Key Points
New observations of plasma bubbles and enhancements are reported Relationship between plasma bubbles and enhancements are identified Physical mechanism for associated bubbles and enhancements is proposed
C1 [Huang, Chao-Song; de La Beaujardiere, O.; Roddy, P. A.; Hunton, D. E.] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
[Le, G.; Pfaff, R. F.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Hairston, M. R.] Univ Texas Dallas, Hanson Ctr Space Sci, Dallas, TX 75230 USA.
RP Huang, CS (reprint author), Air Force Res Lab, Kirtland AFB, NM 87117 USA.
EM chaosong.huang@kirtland.af.mil
RI Le, Guan/C-9524-2012;
OI Le, Guan/0000-0002-9504-5214; Hairston, Marc/0000-0003-4524-4837
FU Air Force Research Laboratory; SMC Defense Weather Systems Directorate;
Department of Defense Space Test Program; National Aeronautics and Space
Administration; Naval Research Laboratory; Aerospace Corporation
FX The C/NOFS mission is supported by the Air Force Research Laboratory,
the SMC Defense Weather Systems Directorate, the Department of Defense
Space Test Program, the National Aeronautics and Space Administration,
the Naval Research Laboratory, and The Aerospace Corporation.
NR 31
TC 7
Z9 7
U1 2
U2 8
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD FEB
PY 2014
VL 119
IS 2
BP 1325
EP 1336
DI 10.1002/2013JA019579
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AD2CP
UT WOS:000333041000047
ER
PT J
AU Ikuta, I
Warden, GI
Andriole, KP
Khorasani, R
Sodickson, A
AF Ikuta, Ichiro
Warden, Graham I.
Andriole, Katherine P.
Khorasani, Ramin
Sodickson, Aaron
TI Estimating Patient Dose from X-ray Tube Output Metrics: Automated
Measurement of Patient Size from CT Images Enables Large-scale
Size-specific Dose Estimates
SO RADIOLOGY
LA English
DT Article
ID ATTENUATION-BASED ESTIMATION; RADIATION-EXPOSURE; BODY-SIZE;
COMPUTED-TOMOGRAPHY; CANCER-RISKS; SCANS; OPTIMIZATION; CHILDHOOD;
QUALITY; PURPOSE
AB Purpose: To test the hypothesis that patient size can be accurately calculated from axial computed tomographic (CT) images, including correction for the effects of anatomy truncation that occur in routine clinical CT image reconstruction.
Materials and Methods: Institutional review board approval was obtained for this HIPAA-compliant study, with waiver of informed consent. Water-equivalent diameter (D-W) was computed from the attenuation-area product of each image within 50 adult CT scans of the thorax and of the abdomen and pelvis and was also measured for maximal field of view (FOV) reconstructions. Linear regression models were created to compare D-W with the effective diameter (D-eff) used to select size-specific volume CT dose index (CTDI (vol)) conversion factors as defined in report 204 of the American Association of Physicists in Medicine. Linear regression models relating reductions in measured D-W to a metric of anatomy truncation were used to compensate for the effects of clinical image truncation.
Results: In the thorax, D-W versus D-eff had an R-2 of 0.51 (n = 200, 50 patients at four anatomic locations); in the abdomen and pelvis, R-2 was 0.90 (n = 150, 50 patients at three anatomic locations). By correcting for image truncation, the proportion of clinically reconstructed images with an extracted D-W within 65% of the maximal FOV D-W increased from 54% to 90% in the thorax (3602 images) and from 95% to 100% in the abdomen and pelvis (6181 images).
Conclusion: The D-W extracted from axial CT images is a reliable measure of patient size, and varying degrees of clinical image truncation can be readily corrected. Automated measurement of patient size combined with CT radiation exposure metrics may enable patient-specific dose estimation on a large scale.
C1 [Ikuta, Ichiro; Warden, Graham I.; Andriole, Katherine P.; Khorasani, Ramin; Sodickson, Aaron] Brigham & Womens Hosp, Dept Radiol, Boston, MA 02115 USA.
[Ikuta, Ichiro; Warden, Graham I.; Andriole, Katherine P.; Khorasani, Ramin; Sodickson, Aaron] Brigham & Womens Hosp, Ctr Evidence Based Imaging, Boston, MA 02115 USA.
[Ikuta, Ichiro; Warden, Graham I.; Andriole, Katherine P.; Khorasani, Ramin; Sodickson, Aaron] Harvard Univ, Sch Med, Boston, MA USA.
[Ikuta, Ichiro] Norwalk Hosp, Dept Radiol, Norwalk, CT 06856 USA.
[Warden, Graham I.] US Air Force, Washington, DC 20330 USA.
RP Sodickson, A (reprint author), Brigham & Womens Hosp, Dept Radiol, 75 Francis St, Boston, MA 02115 USA.
EM asodick-son@partners.org
OI Ikuta, Ichiro/0000-0002-7145-833X
FU National Institutes of Health [R01LM010679, T15LM007092]
FX This research was supported by the National Institutes of Health (grants
R01LM010679 and T15LM007092).
NR 33
TC 4
Z9 4
U1 0
U2 4
PU RADIOLOGICAL SOC NORTH AMERICA
PI OAK BROOK
PA 820 JORIE BLVD, OAK BROOK, IL 60523 USA
SN 0033-8419
J9 RADIOLOGY
JI Radiology
PD FEB
PY 2014
VL 270
IS 2
BP 472
EP 480
DI 10.1148/radiol.13122727
PG 9
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA AG0WB
UT WOS:000335135300019
PM 24086075
ER
PT J
AU Grach, SM
Sergeev, EN
Shindin, AV
Mishin, EV
Watkins, B
AF Grach, S. M.
Sergeev, E. N.
Shindin, A. V.
Mishin, E. V.
Watkins, B.
TI Artificial ionosphere layers for pumping-wave frequencies near the
fourth electron gyroharmonic in experiments at the HAARP facility
SO DOKLADY PHYSICS
LA English
DT Article
ID RADIOWAVE; EMISSIONS; PLASMA
AB In this paper we consider the action (in the magnetic-zenith direction) of powerful high frequency (HF) radiation of ordinary polarization on the ionosphere F region. We deal with frequencies f (0) > 4f (ce) (f (ce) is the electron cyclotron frequency) of 1.7 GW equivalent radiated power. This action results in the appearance in the ionosphere of an artificial ionization layer. The layer descends with respect to the basic (unperturbed) layer at a rate of similar to 500 m s(-1) down to the altitude, where f (0) a parts per thousand 4f (ce) .
C1 [Grach, S. M.; Shindin, A. V.] Lobachevsky State Univ Nizhni Novgorod, Nizhnii Novgorod 603950, Russia.
[Sergeev, E. N.] Radiophys Res Inst, Nizhnii Novgorod 603950, Russia.
[Mishin, E. V.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM USA.
[Watkins, B.] Univ Alaska, Inst Geophys, Fairbanks, AK USA.
RP Grach, SM (reprint author), Lobachevsky State Univ Nizhni Novgorod, Nizhnii Novgorod 603950, Russia.
EM sgrach@rf.unn.ru
RI Shindin, Alexey/R-8728-2016;
OI Shindin, Alexey/0000-0003-1242-5666; Grach, Savely/0000-0003-1726-4793
FU US Air Force; US Navy; Russian Foundation for Basic Research
[11-02-00125, 12-02-00513, 12-02-31181-mol_a, 13-02-12074-ofi_m];
Ministry of Education and Science of the Russian Federation
[14.132.21.1434]; ARO [W911NF-11-1-0217]
FX This work was supported by US Air Force and US Navy (facility
operation), by the Russian Foundation for Basic Research (project nos.
11-02-00125, 12-02-00513, and 12-02-31181-mol_a, 13-02-12074-ofi_m), by
the Ministry of Education and Science of the Russian Federation
(agreement no. 14.132.21.1434), and by the ARO (grant no.
W911NF-11-1-0217). The Russian authors performed the studies according
to the program of the development of Nizhni Novgorod Lobachevskii State
University as a National Research University.
NR 14
TC 6
Z9 6
U1 0
U2 9
PU MAIK NAUKA/INTERPERIODICA/SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013-1578 USA
SN 1028-3358
EI 1562-6903
J9 DOKL PHYS
JI Dokl. Phys.
PD FEB
PY 2014
VL 59
IS 2
BP 62
EP 66
DI 10.1134/S1028335814020074
PG 5
WC Mechanics; Physics, Multidisciplinary
SC Mechanics; Physics
GA AD3OZ
UT WOS:000333156800002
ER
PT J
AU Zimmerman, E
Timboe, A
AF Zimmerman, Ethan
Timboe, Andrew
TI Tinnitus: Steps to take, drugs to avoid
SO JOURNAL OF FAMILY PRACTICE
LA English
DT Article
ID GINKGO-BILOBA; DISORDERS
C1 [Zimmerman, Ethan; Timboe, Andrew] Mike OCallaghan Fed Hosp, Nellis AFB, NV 89191 USA.
RP Zimmerman, E (reprint author), Mike OCallaghan Fed Hosp, 4700 Las Vegas Blvd North, Nellis AFB, NV 89191 USA.
EM ethanzimmerman@yahoo.com
NR 27
TC 0
Z9 0
U1 0
U2 5
PU DOWDEN HEALTH MEDIA
PI MONTVALE
PA 110 SUMMIT AVE, MONTVALE, NJ 07645-1712 USA
SN 0094-3509
J9 J FAM PRACTICE
JI J. Fam. Pract.
PD FEB
PY 2014
VL 63
IS 2
BP 82
EP 88
PG 7
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA AB9IH
UT WOS:000332105100008
PM 24527470
ER
PT J
AU Whitehead, CR
Webb, TS
Wells, TS
Hunter, KL
AF Whitehead, Casserly R.
Webb, Timothy S.
Wells, Timothy S.
Hunter, Kari L.
TI Airmen with mild traumatic brain injury (mTBI) at increased risk for
subsequent mishaps
SO JOURNAL OF SAFETY RESEARCH
LA English
DT Article
DE Occupational safety; Accidents; Concussion; Performance decrements;
Long-term risk
ID TAKING BEHAVIOR; CONCUSSION; EPIDEMIOLOGY; IRAQ
AB Background: Little is known regarding long-term performance decrements associated with mild Traumatic Brain Injury (mTBI). The goal of this study was to determine if individuals with an mTBI may be at increased risk for subsequent mishaps. Methods: Cox proportional hazards modeling was utilized to calculate hazard ratios for 518,958 active duty U.S. Air Force service members (Airmen) while controlling for varying lengths of follow-up and potentially confounding variables. Two non-mTBI comparison groups were used; the second being a subset of the original, both without head injuries two years prior to study entrance. Results: Hazard ratios indicate that the causes of increased risk associated with mTBI do not resolve quickly. Additionally, outpatient mTBI injuries do not differ from other outpatient bodily injuries in terms of subsequent injury risk. Conclusions: These findings suggest that increased risk for subsequent mishaps are likely due to differences shared among individuals with any type of injury, including risk-taking behaviors, occupations, and differential participation in sports activities. Therefore, individuals who sustain an mTBI or injury have a long-term risk of additional mishaps. Practical applications: Differences shared among those who seek medical care for injuries may include risk-taking behaviors (Cherpitel, 1999; Turner & McClure, 2004; Turner, McClure, & Pirozzo, 2004), occupations, and differential participation in sports activities, among others. Individuals with an mTBI should be educated that they are at risk for subsequent injury. Historical data supported no lingering effects of mTBI, but more recent data suggest longer lasting effects. This study further adds that one of the longer term sequelae of mTBI may be an increased risk for subsequent mishap. (C) 2013 National Safety Council and Elsevier Ltd. All rights reserved.
C1 [Whitehead, Casserly R.] Infoscitex Corp, Dayton, OH 45431 USA.
[Webb, Timothy S.; Wells, Timothy S.] Air Force Res Lab, Vulnerabil Anal Branch, AFMC Human Performance Wing 711, Wright Patterson AFB, OH USA.
[Hunter, Kari L.] US Air Force, Safety Ctr, Kirtland AFB, NM USA.
RP Whitehead, CR (reprint author), Infoscitex Corp, 4027 Colonel Glenn Highway,Suite 210, Dayton, OH 45431 USA.
EM Casserly.Whitehead.ctr@WPAFB.AF.MIL; Timothy.Webb@WPAFBAF.MIL;
tmlbwells@wowway.com; Kari.Hunter@Kirtland.AF.MIL
NR 23
TC 1
Z9 1
U1 3
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0022-4375
EI 1879-1247
J9 J SAFETY RES
JI J. Saf. Res.
PD FEB
PY 2014
VL 48
BP 43
EP 47
DI 10.1016/j.jsr.2013.11.004
PG 5
WC Ergonomics; Public, Environmental & Occupational Health; Social
Sciences, Interdisciplinary; Transportation
SC Engineering; Public, Environmental & Occupational Health; Social
Sciences - Other Topics; Transportation
GA AC2TN
UT WOS:000332357000006
PM 24529090
ER
PT J
AU Cigrang, JA
Wayne Talcott, G
Tatum, J
Baker, M
Cassidy, D
Sonnek, S
Snyder, DK
Balderrama-Durbin, C
Heyman, RE
Smith Slep, AM
AF Cigrang, Jeffrey A.
Wayne Talcott, G.
Tatum, JoLyn
Baker, Monty
Cassidy, Daniel
Sonnek, Scott
Snyder, Douglas K.
Balderrama-Durbin, Christina
Heyman, Richard E.
Smith Slep, Amy M.
TI Impact of Combat Deployment on Psychological and Relationship Health: A
Longitudinal Study
SO JOURNAL OF TRAUMATIC STRESS
LA English
DT Article
ID POSTTRAUMATIC-STRESS-DISORDER; MENTAL-HEALTH; FUNCTIONAL IMPAIRMENT;
SOCIAL SUPPORT; PTSD SYMPTOMS; ALCOHOL-USE; IRAQ WAR; SOLDIERS;
ASSOCIATION; EXPOSURES
AB Although previous research has indicated an elevated prevalence of posttraumatic stress disorder (PTSD) and other mental health problems among veterans of Operations Iraqi Freedom and Enduring Freedom following deployment, most of this research has been cross-sectional and has focused on a limited range of military groups and outcome criteria. This investigation was a longitudinal study of U.S. Air Force security forces assigned to a year-long high-threat ground mission in Iraq to determine the degree to which airmen's emotional and behavioral health and committed relationships were adversely impacted by an extended deployment to a warzone. Participants were a cohort of 164 security forces airmen tasked to a 365-day deployment to train Iraqi police. Airmen completed study measures both prior to and 6-9 months following deployment. Rates of deterioration in individual and interpersonal adjustment were both significant and medium to large in magnitude of effect, d = 0.43 to 0.90. Results suggest that the negative effects of deployment are related to levels of traumatic experiences and do not spontaneously remit within the first 6-9 months following return from deploymentparticularly among those service members having relatively lower levels of social support.
C1 [Cigrang, Jeffrey A.; Tatum, JoLyn] Air Force Sch Aerosp Med, Wright Patterson Air Force Base, Wright Patterson AFB, OH USA.
[Wayne Talcott, G.] Univ Tennessee, Ctr Hlth Sci, Dept Preventat Med, Memphis, TN 38163 USA.
[Baker, Monty; Cassidy, Daniel; Sonnek, Scott] Wilford Hall Ambulatory Surg Ctr, Lackland Air Force Base, San Antonio, TX USA.
[Snyder, Douglas K.; Balderrama-Durbin, Christina] Texas A&M Univ, Dept Psychol, College Stn, TX 77843 USA.
[Heyman, Richard E.; Smith Slep, Amy M.] NYU, Dept Cariol & Comprehens Care, New York, NY USA.
RP Cigrang, JA (reprint author), US Air Force, Sch Aerosp Med, 2510 5th St,Bldg 840, Wright Patterson AFB, OH 45433 USA.
EM jeffrey.cigrang@us.af.mil
NR 28
TC 11
Z9 11
U1 0
U2 12
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0894-9867
EI 1573-6598
J9 J TRAUMA STRESS
JI J. Trauma Stress
PD FEB
PY 2014
VL 27
IS 1
BP 58
EP 65
DI 10.1002/jts.21890
PG 8
WC Psychology, Clinical; Psychiatry
SC Psychology; Psychiatry
GA AA7NR
UT WOS:000331284600008
PM 24464429
ER
PT J
AU Granlund, K
Monnier, B
Ol, M
Williams, D
AF Granlund, K.
Monnier, B.
Ol, M.
Williams, D.
TI Airfoil longitudinal gust response in separated vs. attached flows
SO PHYSICS OF FLUIDS
LA English
DT Article
ID LOW REYNOLDS-NUMBERS; LIFT
AB Airfoil aerodynamic loads are expected to have quasi-steady, linear dependence on the history of input disturbances, provided that small-amplitude bounds are observed. We explore this assertion for the problem of periodic sinusoidal streamwise gusts, by comparing experiments on nominally 2D airfoils in temporally sinusoidal modulation of freestream speed in a wind tunnel vs. sinusoidal displacement of the airfoil in constant freestream in a water tunnel. In the wind tunnel, there is a streamwise unsteady pressure gradient causing a buoyancy force, while in the water tunnel one must subtract the inertial load of the test article. Both experiments have an added-mass contribution to aerodynamic force. Within measurement resolution, lift and drag, fluctuating and mean, were in good agreement between the two facilities. For incidence angle below static stall, small-disturbance theory was found to be in good agreement with measured lift history, regardless of oscillation frequency. The circulatory component of fluctuating drag was found to be independent of oscillation frequency. For larger incidence angles, there is marked departure between the measured lift history and that predicted from Greenberg's formula. Flow visualization shows coupling between bluff-body shedding and motion-induced shedding, identifiable with lift cancellation or augmentation, depending on the reduced frequency. Isolating the buoyancy effect in the wind tunnel and dynamic tares in the water tunnel, and theoretical calculation of apparent-mass in both cases, we arrive at good agreement in measured circulatory contribution between the two experiments whether the flow is attached or separated substantiating the linear superposition of the various constituents to total lift and drag, and supporting the idea that aerodynamic gust response can legitimately be studied in a steady freestream by oscillating the test article. (C) 2014 AIP Publishing LLC.
C1 [Granlund, K.; Ol, M.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Monnier, B.; Williams, D.] Illinois Inst Technol, Chicago, IL 60616 USA.
RP Granlund, K (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
EM kenneth.granlund@gmail.com
FU AFOSR [FA9550-09-1-0189]
FX The project was supported by AFOSR Grant No. FA9550-09-1-0189 monitored
by Dr. Douglas Smith. The contributions by Research Assistants Jeremy
Weirich and Xuanhong An are also acknowledged.
NR 12
TC 6
Z9 6
U1 1
U2 13
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-6631
EI 1089-7666
J9 PHYS FLUIDS
JI Phys. Fluids
PD FEB
PY 2014
VL 26
IS 2
AR 027103
DI 10.1063/1.4864338
PG 14
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA AC2HZ
UT WOS:000332322000057
ER
PT J
AU Abotula, S
Heeder, N
Chona, R
Shukla, A
AF Abotula, S.
Heeder, N.
Chona, R.
Shukla, A.
TI Dynamic Thermo-mechanical Response of Hastelloy X to Shock Wave Loading
SO EXPERIMENTAL MECHANICS
LA English
DT Article
DE Hastelloy X; Thermo-mechanical loading; Extreme environments; Shock
tube; High temperature 3D DIC
ID DIGITAL IMAGE CORRELATION; IMPULSIVE LOADS; SQUARE PLATES; DEFORMATION;
TEMPERATURE; BEHAVIOR
AB A comprehensive series of experiments were conducted to study the dynamic response of rectangular Hastelloy X plates at room and elevated temperatures when subjected to shock wave loading. A shock tube apparatus, capable of testing materials at temperatures up to 900 A degrees C, was developed and utilized to generate the shock loading. Propane gas was used as the heating source to effectively provide an extreme thermal environment. The heating system is both robust and capable of providing uniform heating during shock loading. A cooling system was also implemented to prevent the shock tube from reaching high temperatures. High-speed photography coupled with the optical technique of Digital Image Correlation (DIC) was used to obtain the real-time 3D deformation of the Hastelloy X plates under shock wave loading. To eliminate the influence of thermal radiation at high temperatures, the DIC technique was used in conjunction with bandpass optical filters and a high-intensity light source to obtain the full-field deformation. In addition, a high-speed camera was utilized to record the side-view deformation images and this information was used to validate the data obtained from the high temperature 3D stereovision DIC technique. The results showed that uniform heating of the specimen was consistently achieved with the designed heating system. For the same applied incident pressure, the highest impulse was imparted to the specimen at room temperature. As a consequence of temperature-dependent material properties, the specimen demonstrated an increasing trend in back-face (nozzle side) deflection and in-plane strain with increasing temperature.
C1 [Abotula, S.; Heeder, N.; Shukla, A.] Univ Rhode Isl, Dept Mech Ind & Syst Engn, Dynam Photo Mech Lab, Kingston, RI 02881 USA.
[Chona, R.] US Air Force, Struct Sci Ctr, Aerosp Syst Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Shukla, A (reprint author), Univ Rhode Isl, Dept Mech Ind & Syst Engn, Dynam Photo Mech Lab, Kingston, RI 02881 USA.
EM sabotula@my.uri.edu; heedern@egr.uri.edu; ravi.chona@wpafb.af.mil;
shuklaa@egr.uri.edu
FU Air Force Office of Scientific Research [FA9550-13-1-0037]
FX The authors gratefully acknowledge the financial support provided by the
Air Force Office of Scientific Research under Grant No.
FA9550-13-1-0037. The helpful discussions during the course of this
study with Mr. Kenneth B. Leger of the Structural Validation Branch in
the Aerospace Systems Directorate at AFRL are gratefully acknowledged.
NR 26
TC 7
Z9 7
U1 3
U2 16
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0014-4851
EI 1741-2765
J9 EXP MECH
JI Exp. Mech.
PD FEB
PY 2014
VL 54
IS 2
BP 279
EP 291
DI 10.1007/s11340-013-9796-4
PG 13
WC Materials Science, Multidisciplinary; Mechanics; Materials Science,
Characterization & Testing
SC Materials Science; Mechanics
GA AB7LY
UT WOS:000331972900015
ER
PT J
AU Lingley, Z
Mahalingam, K
Lu, SY
Brown, GJ
Madhukar, A
AF Lingley, Zachary
Mahalingam, Krishnamurthy
Lu, Siyuan
Brown, Gail J.
Madhukar, Anupam
TI Nanocrystal-semiconductor interface: Atomic-resolution cross-sectional
transmission electron microscope study of lead sulfide nanocrystal
quantum dots on crystalline silicon
SO NANO RESEARCH
LA English
DT Article
DE nanocrystal quantum dots; semiconductor substrate; interface atomic
structure; high resolution transmission electron microscopy; energy and
charge transfer; solar cells
ID ENERGY-TRANSFER; EMISSION; ELECTROLUMINESCENCE; NANOPARTICLES; SURFACES;
DEVICES
AB We report on a cross-sectional high resolution transmission electron microscope study of lead sulfide nanocrystal quantum dots (NCQDs) dispersed on electron-transparent silicon nanopillars that enables nearly atomically-resolved simultaneous imaging of the entire composite: the quantum dot, the interfacial region, and the silicon substrate. Considerable richness in the nanocrystal shape and orientation with respect to the substrate lattice is observed. The average NCQD-substrate separation is found to be significantly smaller than the length of the ligands on the NCQDs. Complementary photoluminescence measurements show that light emission from PbS NCQDs on silicon is effectively quenched which we attribute to intrinsic mechanisms of energy and charge transfer from PbS NCQDs to Si.
C1 [Lingley, Zachary; Madhukar, Anupam] Univ So Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USA.
[Mahalingam, Krishnamurthy; Brown, Gail J.] US Air Force, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Lu, Siyuan; Madhukar, Anupam] Univ So Calif, Dept Phys & Astron, Los Angeles, CA 90089 USA.
RP Madhukar, A (reprint author), Univ So Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USA.
EM madhukar@usc.edu
FU U.S. Air Force Office of Scientific Research [FA9550-08-1-0146]
FX This work was supported by the U.S. Air Force Office of Scientific
Research (grant No. FA9550-08-1-0146).
NR 31
TC 4
Z9 4
U1 2
U2 25
PU TSINGHUA UNIV PRESS
PI BEIJING
PA TSINGHUA UNIV, RM A703, XUEYAN BLDG, BEIJING, 10084, PEOPLES R CHINA
SN 1998-0124
EI 1998-0000
J9 NANO RES
JI Nano Res.
PD FEB
PY 2014
VL 7
IS 2
BP 219
EP 227
DI 10.1007/s12274-013-0389-4
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Applied
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA AB2WL
UT WOS:000331652700007
ER
PT J
AU Boyne, A
Wang, D
Shi, RP
Zheng, Y
Behera, A
Nag, S
Tiley, JS
Fraser, HL
Banerjee, R
Wang, Y
AF Boyne, A.
Wang, D.
Shi, R. P.
Zheng, Y.
Behera, A.
Nag, S.
Tiley, J. S.
Fraser, H. L.
Banerjee, R.
Wang, Y.
TI Pseudospinodal mechanism for fine alpha/beta microstructures in beta-Ti
alloys
SO ACTA MATERIALIA
LA English
DT Article
DE Nucleation; Precipitation; Congruent transformations; Computer
simulation; Phase-field method
ID SPINODAL DECOMPOSITION; COMPUTER-SIMULATION; CR ALLOYS; PHASE;
TRANSFORMATIONS; NUCLEATION; NUCLEUS; STATE
AB Recent experimental observations in beta-Ti alloys have demonstrated the formation of a dense population of fine intragranular alpha precipates when the alloy is step-quenched below a critical temperature. These precipitates are associated with a sudden, significant increase in the apparent nucleation rate. We developed a computational model of alpha precipitation in Ti alloys, via the phase-field method, in order to investigate the fundamental cause of the observed microstructural changes. We simulated the nucleation of alpha phase in TiMo for a series of compositions and temperatures and qualitatively reproduced the experimental observations. These results are explained via a pseudospinodal nucleation mechanism: when the system is close enough to the critical point at which the alpha and beta phases have the same free energy, fluctuation-assisted partitionless transformation from beta to alpha becomes the dominant precipitation pathway. Consequently a rapid increase in the nucleation rate occurs, resulting in a fine distribution of numerous intragranular alpha precipitates. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Boyne, A.; Wang, D.; Behera, A.; Nag, S.; Banerjee, R.] Univ N Texas, Ctr Adv Res & Technol, Denton, TX 76203 USA.
[Boyne, A.; Wang, D.; Behera, A.; Nag, S.; Banerjee, R.] Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76203 USA.
[Boyne, A.; Wang, D.; Shi, R. P.; Zheng, Y.; Fraser, H. L.; Wang, Y.] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA.
[Tiley, J. S.] AF Res Lab, Mat & Mfg Directorate, Dayton, OH USA.
RP Wang, Y (reprint author), Ohio State Univ, Dept Mat Sci & Engn, 2041 N Coll Rd, Columbus, OH 43210 USA.
EM wang.363@osu.edu
RI Wang, Dong/G-2677-2010; Shi, Rongpei/D-3959-2011; Wang,
Yunzhi/B-2557-2010; Zheng, Yufeng/C-5336-2013
OI Shi, Rongpei/0000-0002-5007-4249;
FU US Air Force Research Laboratory (AFRL) [FA8650-08-C-5226]; AFOSR STW-21
Program [FA9550-09-1-0014]; US National Science Foundation [DMR
1006487]; NSF [DMR1008349]
FX The authors would like to acknowledge the financial supports from the US
Air Force Research Laboratory (AFRL contract FA8650-08-C-5226) and AFOSR
STW-21 Program (Grant No. FA9550-09-1-0014) (R.P.S, H.L.F and Y.W). The
authors would also like to acknowledge support from the US National
Science Foundation (DMR 1006487) (R.B and H.L.F) and NSF (DMR1008349)
(Y.W). In addition, the authors also gratefully acknowledge the Center
for the Accelerated Maturation of Materials (CAMM) at the Ohio State
University and the Center for Advanced Research and Technology (CART) at
the University of North Texas for access to the experimental facilities
used for this study.
NR 33
TC 14
Z9 15
U1 2
U2 50
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
EI 1873-2453
J9 ACTA MATER
JI Acta Mater.
PD FEB
PY 2014
VL 64
BP 188
EP 197
DI 10.1016/j.actamat.2013.10.026
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA AA3TW
UT WOS:000331017800019
ER
PT J
AU Forbes, JA
Zuckerman, S
Abla, AA
Mocco, J
Bode, K
Eads, T
AF Forbes, Jonathan A.
Zuckerman, Scott
Abla, Adib A.
Mocco, J.
Bode, Ken
Eads, Todd
TI Biomechanics of subdural hemorrhage in American football: review of the
literature in response to rise in incidence
SO CHILDS NERVOUS SYSTEM
LA English
DT Review
DE Trauma; Catastrophic head injury; Rotational; Translational;
Acceleration; Subdural hemorrhage; American football
ID HIGH-SCHOOL FOOTBALL; PROFESSIONAL FOOTBALL; HEAD-INJURY; HEMATOMA;
CONCUSSION; IMPACTS; RUPTURE; PLAYER; ASSOCIATION; DENSITY
AB The number of catastrophic head injuries recorded during the 2011 football season was the highest since data collection began in 1984-the vast majority of these cases were secondary to subdural hemorrhage (SDH). The incidence of catastrophic head injury continues to rise: the average yearly incidence from 2008 to 2012 was 238 % that of the average yearly incidence from 1998 to 2002. Greater than 95 % of the football players who suffered catastrophic head injury during this period were age 18 or younger. Currently, the helmet industry utilizes a standard based on data obtained at Wayne State University approximately 50 years ago that seeks to limit severity index-a surrogate marker of translational acceleration. In this manuscript, we utilize a focused review of the literature to better characterize the biomechanical factors associated with SDH following collisions in American football and discuss these data in the context of current helmet standard. Review of the literature indicates the rotational acceleration (RA) threshold above which the risk of SDH becomes appreciable is approximately 5,000 rad/s(2). This value is not infrequently surmounted in typical high school football games. In contrast, translational accelerations (TAs) experienced during even elite-level impacts in football are not of sufficient magnitude to result in SDH. This information raises important questions about the current helmet standard-in which the sole objective is limitation of TA. Further studies will be necessary to better define whether helmet constructs and quality assurance standards designed to limit RA will also help to decrease the risk of catastrophic head injury in American football.
C1 [Forbes, Jonathan A.; Eads, Todd] David Grant Med Ctr, Dept Neurol Surg, Fairfield, CA 94535 USA.
[Zuckerman, Scott; Mocco, J.] Vanderbilt Univ, Ctr Med, Dept Neurol Surg, Nashville, TN 37232 USA.
[Abla, Adib A.] Barrow Neurol Inst, Dept Neurol Surg, Phoenix, AZ 85013 USA.
[Bode, Ken] David Grant Med Ctr, Travis AFB, Dept Orthoped Surg, Fairfield, CA 94535 USA.
RP Forbes, JA (reprint author), David Grant Med Ctr, Dept Neurol Surg, 103 Bodin Circle Travis AFB, Fairfield, CA 94535 USA.
EM jonathan.a.forbes@gmail.com
NR 36
TC 6
Z9 6
U1 3
U2 13
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0256-7040
EI 1433-0350
J9 CHILD NERV SYST
JI Childs Nerv. Syst.
PD FEB
PY 2014
VL 30
IS 2
BP 197
EP 203
DI 10.1007/s00381-013-2318-y
PG 7
WC Clinical Neurology; Pediatrics; Surgery
SC Neurosciences & Neurology; Pediatrics; Surgery
GA AA4NQ
UT WOS:000331073200002
PM 24240553
ER
PT J
AU Anagnostou, DE
Chryssomallis, MT
Braaten, BD
Ebel, JL
Sepulveda, N
AF Anagnostou, Dimitris E.
Chryssomallis, Michael T.
Braaten, Benjamin D.
Ebel, John L.
Sepulveda, Nelson
TI Reconfigurable UWB Antenna With RF-MEMS for On-Demand WLAN Rejection
SO IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
LA English
DT Article
DE Antennas; cognitive radio; integrated components; MEMS; reconfigurable
antennas
ID MONOPOLE ANTENNA; SLOT ANTENNA; BAND; SINGLE
AB A MEMS reconfigurable ultra-wideband (UWB) antenna that rejects on-demand all WLAN signals in the entire 5.15 to 5.825 GHz range (675 MHz bandwidth) is presented. The antenna design, miniaturization procedure, and monolithic integration with the MEMS and biasing network on SiO2 Quartz substrate are described. The integration challenges are addressed and the work is presented in a way that is useful for antenna engineers. A method to vary the rejection bandwidth is also provided. The fabricated prototype is conformal and single-sided. The antenna is measured using a custom-built platform at a university laboratory. Results indicate a successful integration and minimal interference of the MEMS and biasing circuitry with the antenna, paving the road for more integrated reconfigurable antennas on SiO2 using MEMS technology. Such antennas can improve UWB, WLAN and cognitive radio communication links.
C1 [Anagnostou, Dimitris E.] South Dakota Sch Mines & Technol, Dept Elect & Comp Engn, Rapid City, SD 57701 USA.
[Anagnostou, Dimitris E.] Democritus Univ Thrace, GR-67100 Xanthi, Greece.
[Chryssomallis, Michael T.] Democritus Univ Thrace, Dept Elect & Comp Engn, GR-67100 Xanthi, Greece.
[Braaten, Benjamin D.] N Dakota State Univ, Dept Elect & Comp Engn, Fargo, ND 58102 USA.
[Ebel, John L.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
[Sepulveda, Nelson] Michigan State Univ, E Lansing, MI 48823 USA.
RP Anagnostou, DE (reprint author), South Dakota Sch Mines & Technol, Dept Elect & Comp Engn, Rapid City, SD 57701 USA.
EM danagn@ieee.org; mchrysso@ee.duth.gr; benjamin.braaten@ndsu.edu;
John.Ebel@us.af.mil; nelsons@egr.msu.edu
RI Sepulveda, Nelson/E-6536-2011; Anagnostou, Dimitris/A-3124-2009;
OI Sepulveda, Nelson/0000-0002-9676-8529; Anagnostou,
Dimitris/0000-0003-4266-0309; Chryssomallis, MIchael/0000-0002-3319-0096
FU Defense Advanced Research Projects Agency/ MTO Young Faculty
[N66001-11-1-4145]; US Army Research Office [W911NF-09-1-0277]; National
Science Foundation [ECS-1310400, ECS-1310257]; Air Force Research
Laboratories/SAIC [FA9453-08-C-0245]; Greek Ministry of Education
project THALES RF-Eigen-Sdr; Air Force Research
Laboratories/MacAulay-Brown Inc. [MacB-07-D-0016]
FX This work was supported in part by the Defense Advanced Research
Projects Agency/ MTO Young Faculty Award under agreement number
N66001-11-1-4145, the US Army Research Office under agreement number
W911NF-09-1-0277, the National Science Foundation under collaborative
grants ECS-1310400 and ECS-1310257, the Air Force Research
Laboratories/SAIC under contract No. FA9453-08-C-0245, the Greek
Ministry of Education project THALES RF-Eigen-Sdr, and the Air Force
Research Laboratories/MacAulay-Brown Inc. under agreement number
MacB-07-D-0016 Task Order 0010.
NR 26
TC 12
Z9 12
U1 3
U2 23
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-926X
EI 1558-2221
J9 IEEE T ANTENN PROPAG
JI IEEE Trans. Antennas Propag.
PD FEB
PY 2014
VL 62
IS 2
BP 602
EP 608
DI 10.1109/TAP.2013.2293145
PG 7
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA AA7RO
UT WOS:000331294800011
ER
PT J
AU Semiatin, SL
Shank, JM
Saurber, WM
Pilchak, AL
Ballard, DL
Zhang, F
Gleeson, B
AF Semiatin, S. L.
Shank, J. M.
Saurber, W. M.
Pilchak, A. L.
Ballard, D. L.
Zhang, F.
Gleeson, B.
TI Alloying-Element Loss During High-Temperature Processing of a
Nickel-Base Superalloy
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article
ID MICROSTRUCTURE EVOLUTION; DIFFUSION; OXIDATION; CHROMIUM; METAL; FOIL
AB The effect of exposure at temperatures commonly used for wrought processing/heat treatment of nickel-base superalloys on the loss of alloying elements at the free surface has been determined. For this purpose, LSHR superalloy samples were exposed at 1408 K (1135 degrees C) for 0.25 to 4 hours in a vacuum or air furnace. Samples heat treated in the air furnace were either bare or enclosed in quartz capsules that had been evacuated or backfilled with argon. Following heat treatment, the alloy composition as a function of depth below the surface was determined by wavelength dispersive spectroscopy. Samples that had been heat treated in the vacuum furnace exhibited significant depletion of only chromium, a behavior explained on the basis of its high activity in nickel solid solution and corresponding rapid rate of evaporation. By contrast, samples heat treated in air exhibited an irregular scale at the surface and an underlying grain-coarsened, gamma-prime-depleted metal layer lean in aluminum, titanium, and chromium. A yet different behavior characterized primarily by aluminum loss at the surface was noted for samples that had been heat treated in evacuated or argon-backfilled capsules. These observations were interpreted in the context of a reaction between the quartz capsule and the aluminum evaporant. (C) The Minerals, Metals & Materials Society and ASM International
C1 [Semiatin, S. L.; Pilchak, A. L.; Ballard, D. L.] AFRL, RXCM, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Shank, J. M.] UES Inc, Dayton, OH 45432 USA.
[Saurber, W. M.] Univ Dayton, Dept Mech & Aerosp Engn, Dayton, OH 45409 USA.
[Zhang, F.] CompuTherm LLC, Madison, WI 53719 USA.
[Gleeson, B.] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15261 USA.
RP Semiatin, SL (reprint author), AFRL, RXCM, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM Lee.Semiatin@wpafb.af.mil
RI SEMIATIN, SHELDON/E-7264-2017
FU Air Force Office of Scientific Research; [FA8650-08-D-5200];
[FA8650-09-2-5800]; [FA8650-07-D-5800]
FX This work was conducted as part of the in-house research of the Metals
Branch of the Air Force Research Laboratory's Materials and
Manufacturing Directorate. The support and encouragement of the
Laboratory management and the Air Force Office of Scientific Research
(Drs. A. Sayir and J. Fuller, program managers) are gratefully
acknowledged. Technical discussions with T.P. Gabb and C.K Sudbrack
(NASA Glenn Research Center) are much appreciated. The assistance of
T.M. Brown, R.E. Turner, and F. Meisenkothen in conducting the heat
treatment experiments and determining the composition of deposits on
quartz capsules is appreciated. Three of the authors were supported
under the auspices of contracts FA8650-08-D-5200(JMS) FA8650-09-2-5800
(WMS), and FA8650-07-D-5800 (ALP).
NR 24
TC 2
Z9 2
U1 0
U2 22
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
EI 1543-1940
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD FEB
PY 2014
VL 45A
IS 2
BP 962
EP 979
DI 10.1007/s11661-013-2005-3
PG 18
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA AA4VI
UT WOS:000331094100040
ER
PT J
AU Tiley, J
Shaffer, J
Shiveley, A
Pilchak, A
Salem, A
AF Tiley, Jaimie
Shaffer, Joshua
Shiveley, Adam
Pilchak, Adam
Salem, Ayman
TI The Effect of Lath Orientations on Oxygen Ingress in Titanium Alloys
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article
ID ALPHA-CASE FORMATION; DISLOCATION SUBSTRUCTURES; MECHANICAL-PROPERTIES;
TI-6AL-4V; PHASE; DIFFUSION; TI; TI-6AL-2SN-4ZR-2MO; MICROSTRUCTURE;
OXIDATION
AB Oxygen ingress is critical to the high-temperature behavior of alpha + beta titanium alloys. The current study investigated the impact of crystallographic orientation on the ingress of oxygen in Ti-6Al-2Sn-4Zr-2Mo + Si, for colony microstructures. The oxygen ingress depth was estimated using EDS, EPMA, microhardenss, and optical microscopy. Results indicate that the depth of oxygen ingress in colony microstructures is dependent on alpha-laths' orientation relative to the ingress direction. A finite element model was developed to simulate the oxygen ingress in three different lath orientations. Results were used to calibrate the effective diffusivity for the colony microstructure. The relationships between the lath orientations, hardness, and ingress depth were discussed. (C) The Minerals, Metals & Materials Society and ASM International 2013
C1 [Tiley, Jaimie; Shiveley, Adam; Pilchak, Adam] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Shaffer, Joshua; Salem, Ayman] Mat Resources LLC, Dayton, OH 45402 USA.
[Shiveley, Adam] UES Inc, Beavercreek, OH 45432 USA.
RP Tiley, J (reprint author), Air Force Res Lab, 2230 Tenth St, Wright Patterson AFB, OH 45433 USA.
EM jaimie.tiley@wpafb.af.mil
OI Salem, Ayman/0000-0003-0907-1502
FU internal research within the Metals Branch of the Air Force Research
Laboratory; Materials and Manufacturing Directorate; AF
[FA8650-11-M-5176]
FX The current study was supported by internal research within the Metals
Branch of the Air Force Research Laboratory, Materials and Manufacturing
Directorate, and by AF contract number FA8650-11-M-5176. Technical
support was also provided by Dr. R. Banerjee from the University of
North Texas, and from Dr. H. Fraser, Dr. G. Viswanathan, and Ms. S. Knox
from the Ohio State University.
NR 30
TC 1
Z9 1
U1 1
U2 10
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
EI 1543-1940
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD FEB
PY 2014
VL 45A
IS 2
BP 1041
EP 1048
DI 10.1007/s11661-013-2032-0
PG 8
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA AA4VI
UT WOS:000331094100047
ER
PT J
AU Ullrich, B
Antillon, A
Bhowmick, M
Wang, JS
Xi, H
AF Ullrich, B.
Antillon, A.
Bhowmick, M.
Wang, J. S.
Xi, H.
TI Atomic transition region at the crossover between quantum dots to
molecules
SO PHYSICA SCRIPTA
LA English
DT Article
DE PbS quantum dots; quantum dot preparation; optical properties of quantum
dots; phonons in quantum dots; phase transition
ID SEMICONDUCTOR MICROCRYSTALLITES; NANOCRYSTALS
AB The presented investigations aim to pinpoint the crossover of lead sulfide (PbS) quantum dots (QDs) with a shrinking diameter to a molecular state. We have measured the transmittance of strongly confined PbS QDs of 2.7, 3.1, 4.7 and 4.8 nm size in the temperature range of 10-300 K. Fitting these results with the classical Fan theory revealed that the average phonon energy coincides with the reduction of the QD diameters, pointing to a limitation of coherent atom movements in strongly confined matter. The phonons vanish at QDs limited to 90 atoms corresponding to a size of 1.7 nm, which we define as the critical size for the solid-to-molecule crossover. The result is confirmed by a calculation based on the uncertainty principle.
C1 [Ullrich, B.; Antillon, A.; Bhowmick, M.] Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62210, Morelos, Mexico.
[Bhowmick, M.] Nazarbayev Univ, Sch Sci & Technol, Astana 010000, Kazakhstan.
[Wang, J. S.] Mat & Mfg Directorate, AF Res Lab, Wright Patterson AFB, OH 45433 USA.
[Xi, H.] Bowling Green State Univ, Dept Phys & Astron, Bowling Green, OH 43403 USA.
RP Ullrich, B (reprint author), Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62210, Morelos, Mexico.
EM bruno@fis.unam.mx
FU DGAPA-UNAM PAPIIT project [TB100213-RR170213]
FX The work was partially supported by the DGAPA-UNAM PAPIIT project
TB100213-RR170213, PI Bruno Ullrich. We also acknowledge R Garcia and U
Amaya for technical support. BU dedicates this work to Susi for showing
unwavering commitment.
NR 28
TC 3
Z9 3
U1 0
U2 8
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0031-8949
EI 1402-4896
J9 PHYS SCRIPTA
JI Phys. Scr.
PD FEB
PY 2014
VL 89
IS 2
AR 025801
DI 10.1088/0031-8949/89/02/025801
PG 4
WC Physics, Multidisciplinary
SC Physics
GA AA6LG
UT WOS:000331209200014
ER
PT J
AU Herzinger, K
Holcomb, T
AF Herzinger, Kurt
Holcomb, Trae
TI Perfect Bricks of Every Size
SO SEMIGROUP FORUM
LA English
DT Article
DE Numerical semigroup; Relative ideal; Dual; Minimal generating set
ID NUMERICAL SEMIGROUPS; TENSOR-PRODUCTS; RIGIDITY; MODULES; TORSION; TOR
AB We answer an open question from a previous investigation related to numerical semigroups. For integers k,na parts per thousand yen2 we prove the existence of a numerical semigroup S and a relative ideal I such that the size of the minimal generating set for I is k, the size of the minimal generating set for the dual, S-I, is n, and the size of the minimal generating for the ideal sum I+(S-I) is nk. Further, we outline a method for proving that S is symmetric and S+(S-I)=Sa-{0}. The primary tool in this investigation is the Apery set of S relative to the multiplicity of S.
C1 [Herzinger, Kurt; Holcomb, Trae] US Air Force Acad, Dept Math Sci, Colorado Springs, CO 80840 USA.
RP Herzinger, K (reprint author), US Air Force Acad, Dept Math Sci, 2354 Fairchild Dr Suite 6D124, Colorado Springs, CO 80840 USA.
EM kurt.herzinger@usafa.edu; trae.holcomb@usafa.edu
NR 11
TC 0
Z9 0
U1 0
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0037-1912
EI 1432-2137
J9 SEMIGROUP FORUM
JI Semigr. Forum
PD FEB
PY 2014
VL 88
IS 1
BP 205
EP 220
DI 10.1007/s00233-013-9522-7
PG 16
WC Mathematics
SC Mathematics
GA AA3JA
UT WOS:000330987500014
ER
PT J
AU Jones-Farmer, LA
Ezell, JD
Hazen, BT
AF Jones-Farmer, L. Allison
Ezell, Jeremy D.
Hazen, Benjamin T.
TI Applying Control Chart Methods to Enhance Data Quality
SO TECHNOMETRICS
LA English
DT Article
DE Attributes control chart; Data analytics; Data production process;
Process improvement; Quality management
ID STATISTICAL PROCESS-CONTROL; I CONTROL CHARTS; INFORMATION-SYSTEMS;
DECISION-SUPPORT; PRODUCT QUALITY; MULTIVARIATE; MODEL; PROPORTIONS;
PERSPECTIVE; PERFORMANCE
AB As the volume and variety of available data continue to proliferate, organizations increasingly turn to analytics in order to enhance business decision-making and ultimately, performance. However, the decisions made as a result of the analytics process are only as good as the data on which they are based. In this article, we examine the data quality problem and propose the use of control charting methods as viable tools for data quality monitoring and improvement. We motivate our discussion using an integrated case study example of a real aircraft maintenance database. We include discussions of the measures of multiple data quality dimensions in this online process. We highlight the lack of appropriate statistical methods for the analysis of this type of problem and suggest opportunities for research in control chart methods within the data quality environment. This article has supplementary material online.
C1 [Jones-Farmer, L. Allison; Ezell, Jeremy D.] Auburn Univ, Dept Aviat & Supply Chain Management, Auburn, AL 36849 USA.
[Hazen, Benjamin T.] United States Air Force, Seymour Johnson AFB, NC 27531 USA.
RP Jones-Farmer, LA (reprint author), Auburn Univ, Dept Aviat & Supply Chain Management, Auburn, AL 36849 USA.
EM jde009@auburn.edu; benjamin.hazen@us.af.mil
NR 91
TC 10
Z9 10
U1 3
U2 21
PU AMER STATISTICAL ASSOC
PI ALEXANDRIA
PA 732 N WASHINGTON ST, ALEXANDRIA, VA 22314-1943 USA
SN 0040-1706
EI 1537-2723
J9 TECHNOMETRICS
JI Technometrics
PD FEB
PY 2014
VL 56
IS 1
BP 29
EP 41
DI 10.1080/00401706.2013.804437
PG 13
WC Statistics & Probability
SC Mathematics
GA AB2WY
UT WOS:000331654000007
ER
PT J
AU Blount, TH
Cigrang, JA
Foa, EB
Ford, HL
Peterson, AL
AF Blount, Tabatha H.
Cigrang, Jeffrey A.
Foa, Edna B.
Ford, Haley L.
Peterson, Alan L.
TI Intensive Outpatient Prolonged Exposure for Combat-Related PTSD: A Case
Study
SO COGNITIVE AND BEHAVIORAL PRACTICE
LA English
DT Article
DE posttraumatic stress disorder; prolonged exposure; intensive outpatient;
active-duty military
ID POSTTRAUMATIC-STRESS-DISORDER; COGNITIVE-BEHAVIORAL THERAPY; RANDOMIZED
CONTROLLED-TRIAL; PSYCHOLOGICAL TREATMENTS; VETERANS; SURVIVORS;
SOLDIERS; COMBINATION; PREVENTION; DEPRESSION
AB The prevalence rates for combat-related posttraumatic stress disorder (PTSD) in U.S. military personnel returning from deployments to Iraq and Afghanistan indicate a significant demand for efficacious treatments that can be delivered in military-relevant formats. According to research with civilian and veteran populations, prolonged exposure is a first-line treatment for PTSD. However, research examining the generalizibility of prolonged exposure to active-duty military service members is scarce. Modifications to the standard prolonged exposure protocol may be required to meet military operational needs and to circumvent unique treatment barriers associated with the military. Intensive outpatient or compressed treatment delivered over a short time period has the potential for significant operational utility for active-duty military populations. Intensive outpatient practice formats have been found to be efficacious for the treatment of other anxiety disorders (i.e., specific phobia, obsessive-compulsive disorder). The present case report is the first to evaluate the use of intensive outpatient prolonged exposure for combat-related PTSD in an active-duty military service member. Treatment consisted of 10 full-day outpatient sessions over a 2-week period. The patient's PTSD, depression, and anxiety were dramatically reduced by the end of treatment, and she no longer met diagnostic criteria for PTSD. She remained in full remission at the 6-month follow-up.
C1 [Blount, Tabatha H.; Ford, Haley L.; Peterson, Alan L.] Univ Texas Hlth Sci Ctr San Antonio, San Antonio, TX 78229 USA.
[Cigrang, Jeffrey A.] US Air Force, Sch Aerosp Med, Wright Patterson AFB, OH USA.
[Foa, Edna B.] Univ Penn, Philadelphia, PA 19104 USA.
RP Peterson, AL (reprint author), Univ Texas Hlth Sci Ctr San Antonio, Dept Psychiat, 7550 IH 10 West,Suite 1325, San Antonio, TX 78229 USA.
EM petersona3@uthscsa.edu
NR 48
TC 5
Z9 5
U1 3
U2 14
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1077-7229
EI 1878-187X
J9 COGN BEHAV PRACT
JI Cogn. Behav. Pract.
PD FEB
PY 2014
VL 21
IS 1
BP 89
EP 96
PG 8
WC Psychology, Clinical
SC Psychology
GA AA2JH
UT WOS:000330920400009
ER
PT J
AU Stout, BM
Alent, BJ
Pedalino, P
Holbrook, R
Gluhak-Heinrich, J
Cui, Y
Harris, MA
Gemperli, AC
Cochran, DL
Deas, DE
Harris, SE
AF Stout, Bradshaw M.
Alent, Brian J.
Pedalino, Peter
Holbrook, Ryan
Gluhak-Heinrich, Jelica
Cui, Yong
Harris, Marie A.
Gemperli, Anja C.
Cochran, David L.
Deas, David E.
Harris, Stephen E.
TI Enamel Matrix Derivative: Protein Components and Osteoinductive
Properties
SO JOURNAL OF PERIODONTOLOGY
LA English
DT Article
DE Ameloblastin protein, human; amelogenin; enamel matrix proteins;
osteogenesis; proteomics; tuftelin
ID PERIODONTAL-LIGAMENT CELLS; IN-VITRO; BONE-FORMATION; AMELOGENIN;
REGENERATION; DIFFERENTIATION; OSTEOBLAST; EXPRESSION; CEMENTUM; GROWTH
AB Background: Although enamel matrix derivative (EMD) has demonstrated the ability to promote angiogenesis and osteogenesis both in vitro and in vivo, the specific elements within the EMD compound responsible for these effects remain unknown.
Methods: Nine different protein pools from a commercially produced EMD were collected based on molecular weight. Six of these pools, along with the complete EMD unfractionated compound and positive and negative controls, were tested for their ability to induce bone formation in a calvarial induction assay. Immunocytochemistry of phosphorylated SMAD1/5/8 (phospho-SMAD), osterix, and vascular endothelial growth factor A (VEGF-A) was carried out at selected time points. Finally, proteomic analysis was completed to determine the specific protein-peptide content of the various osteoinductive pools.
Results: One of the lower-molecular-weight pools tested, pool 7, showed bone induction responses significantly greater than those of the other pools and the complete EMD compound and was concentration dependent. Dynamic bone formation rate analysis demonstrated that pool 7 was optimally active at the 5- to 10-mu g concentration. It was demonstrated that EMD and pool 7 induced phospho-SMAD, osterix, and VEGF-A, which is indicative of increased bone morphogenetic protein (BMP) signaling. Proteomic composition analysis demonstrated that pool 7 had the highest concentration of the biologically active amelogenin-leucine-rich amelogenin peptide and ameloblastin 17-kDa peptides.
Conclusions: These studies demonstrate that the low-molecular-weight protein pools (7 to 17 kDa) within EMD have greater osteoinductive potential than the commercially available complete EMD compound and that the mechanism of action, in part, is through increased BMP signaling and increased osterix and VEGF-A. With this information, selected components of EMD can now be formulated for optimal osteo-and angio-genesis.
C1 [Stout, Bradshaw M.; Alent, Brian J.; Pedalino, Peter; Holbrook, Ryan] Wilford Hall USAF Med Ctr, Dept Periodont, San Antonio, TX USA.
[Gluhak-Heinrich, Jelica; Cui, Yong; Harris, Marie A.; Cochran, David L.; Deas, David E.; Harris, Stephen E.] Univ Texas Hlth Sci Ctr San Antonio, Dept Periodont, San Antonio, TX 78229 USA.
[Gemperli, Anja C.] Inst Straumann AG, Basel, Switzerland.
RP Harris, SE (reprint author), Univ Texas Hlth Sci Ctr San Antonio, Dept Periodont, Room 3-585U,7703 Floyd Curl Dr, San Antonio, TX 78229 USA.
EM harris@uthscsa.edu
FU National Institutes of Health, Bethesda, MD [NIAMS AR46798]; ITI
International Team for Implantology, Basel, Switzerland
FX Authors BMS, BJA, PP, and RH contributed equally to the design and
completion of this study. The work was supported by the National
Institutes of Health, Bethesda, MD, research grant NIAMS AR46798 to SEH;
and a grant from ITI International Team for Implantology, Basel,
Switzerland, to DLC and SEH. The authors thank the Institute Straumann
for the gift of EMD and the fractionated pools of EMD. The authors also
thank Kevin Hakala and Dr. Sue Weintraub in the Core Proteomic-Mass
Spectroscopy Laboratory at the University of Texas Health Science Center
at San Antonio. ACG was an employee at Institute Straumann, Basel,
Switzerland, and was instrumental in the production of the various pools
of EMD. None of the other authors report conflicts of interest related
to the work described in this study. No authors have received lecture
and or consulting fees or are currently employed at Institute Straumann.
NR 30
TC 11
Z9 11
U1 1
U2 9
PU AMER ACAD PERIODONTOLOGY
PI CHICAGO
PA 737 NORTH MICHIGAN AVENUE, SUITE 800, CHICAGO, IL 60611-2690 USA
SN 0022-3492
EI 1943-3670
J9 J PERIODONTOL
JI J. Periodont.
PD FEB
PY 2014
VL 85
IS 2
BP E9
EP E17
DI 10.1902/jop.2013.130264
PG 9
WC Dentistry, Oral Surgery & Medicine
SC Dentistry, Oral Surgery & Medicine
GA AA5LI
UT WOS:000331140100002
PM 23919251
ER
PT J
AU Traversa, A
Loffredo, E
Gattullo, CE
Palazzo, AJ
Bashore, TL
Senesi, N
AF Traversa, Andreina
Loffredo, Elisabetta
Gattullo, Concetta E.
Palazzo, Antonio J.
Bashore, Terry L.
Senesi, Nicola
TI Comparative evaluation of compost humic acids and their effects on the
germination of switchgrass (Panicum vigatum L.)
SO JOURNAL OF SOILS AND SEDIMENTS
LA English
DT Article
DE Compost humic acid; Fluorescence spectroscopy; FT IR spectroscopy;
Germination and early growth effects; Switchgrass
ID GROWTH; SUBSTANCES; PLANTS; SPECTROSCOPY
AB This study aimed to investigate comparatively the main chemical and physico-chemical properties of the humic acid (HA) fraction of three different composts and to evaluate the bioactive effects of these HAs on the germination and early growth of four populations of switchgrass.
Three compost HAs isolated from a green compost (HA(GC)), a mixed compost (HA(MC)), and a coffee compost (HA(CC)) were characterized for some chemical and physico-chemical properties, such as ash content, elemental composition, total acidity, carboxylic and phenolic OH group contents, E-4/E-6 ratio, Fourier Transform infrared (FT IR), and fluorescence spectroscopies. In subsequent experiments conducted in vitro in a climatic chamber under controlled conditions, the bioactive effects of the three HAs at concentrations of 10, 50, and 200 mg L-1 were tested on the germination and early growth of four switchgrass (Panicum virgatum L.) populations, the octaploids Shelter, Shawnee and Dacotah, and the tetraploid Alamo.
The ash content and the E-4/E-6 ratio were, respectively, much higher or slightly higher for HA(CC) than for the other two HAs. HA(MC) showed the lowest C and H contents and the highest O content, whereas HA(GC) had the highest N content. The total acidity and phenolic OH group content followed the order: HA(MC) > HA(CC) > HA(GC). The fluorescence analysis of the three HAs evidenced a common fluorophore unit possibly associated to simple aromatic structures, such as phenolic-like, hydroxy-substituted benzoic and cinnamic acid derivatives. The FT IR spectra of all HA samples indicated the presence of aromatic phenolic structures. Significant beneficial effects were produced by any HA on switchgrass germination and early growth as a function of the population tested and the HA dose.
Results of this study demonstrated that the addition of compost HAs to the germination medium of four switchgrass populations positively influenced the germination process and the growth of primary root and shoot. Significant correlations were found between HA bioactivity and some HA properties. These results suggest a possible use of compost as soil amendment in areas where switchgrass grows naturally or is cultivated.
C1 [Traversa, Andreina; Loffredo, Elisabetta; Gattullo, Concetta E.; Senesi, Nicola] Univ Bari, Dipartimento Sci Suolo Pianta & Alimenti, I-70126 Bari, Italy.
[Palazzo, Antonio J.] ERDC CRREL, Hanover, NH 03755 USA.
[Bashore, Terry L.] HQ ACC A3A, Airfield Operat Div, Langley AFB, Hampton, VA USA.
RP Loffredo, E (reprint author), Univ Bari, Dipartimento Sci Suolo Pianta & Alimenti, I-70126 Bari, Italy.
EM elisabetta.loffredo@uniba.it
OI Loffredo, Elisabetta/0000-0003-0783-5193
FU U.S. Army RDECOM ACQ CTR, Durham NC, USA [W911NF-08-1-0076]; Airspace,
Ranges, and Airfield Operations Division, HQ Air Combat Command, Langley
AFB, VA
FX This work was supported by the Research Contract No. W911NF-08-1-0076 of
the U.S. Army RDECOM ACQ CTR-W911NF, Durham NC, USA. Project title:
Effects of quality composts and other organic amendments and their humic
and fulvic acid fractions on the germination and early growth of
slickspot Peppergrass (Lepidium papilliferum) and switchgrass in various
experimental conditions, funded by the Airspace, Ranges, and Airfield
Operations Division, HQ Air Combat Command, Langley AFB, VA. The
opinions and conclusions in this article are those of the authors and do
not necessarily reflect those of the U. S. Air Force, United States
Army, or the Federal government.
NR 27
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U1 3
U2 38
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1439-0108
EI 1614-7480
J9 J SOIL SEDIMENT
JI J. Soils Sediments
PD FEB
PY 2014
VL 14
IS 2
BP 432
EP 440
DI 10.1007/s11368-013-0653-y
PG 9
WC Environmental Sciences; Soil Science
SC Environmental Sciences & Ecology; Agriculture
GA AA3AN
UT WOS:000330965400021
ER
PT J
AU Baker, AC
Atkins, BZ
Clouse, WD
Noll, R
Sampson, J
Williams, T
AF Baker, Aaron C.
Atkins, B. Zane
Clouse, W. Darrin
Noll, Robert
Sampson, James
Williams, Timothy
TI Repair of Aberrant Right Subclavian Artery Entirely via a
Supraclavicular Approach
SO ANNALS OF VASCULAR SURGERY
LA English
DT Article
ID KOMMERELLS DIVERTICULUM; SURGICAL-TREATMENT; ANEURYSM; MANAGEMENT;
OPTIONS; LUSORIA
AB An aberrant right subclavian artery is a known arch variant with surgical intervention reserved for those patients presenting symptomatically, those with aneurysmal degeneration particularly of a Kommerell diverticulum, or those with adjacent aortic pathology. Varied surgical approaches have been described, often involving a supraclavicular approach in conjunction with a thoracotomy, or more recently, hybrid endovascular techniques. In the absence of aneurysmal degeneration or associated aortic pathology, surgical repair can be performed safely through a single supraclavicular incision. We present a case of a patient repaired in this fashion.
C1 [Baker, Aaron C.; Atkins, B. Zane; Clouse, W. Darrin; Williams, Timothy] Univ Calif Davis Med Ctr, Dept Surg, Sacramento, CA 95817 USA.
[Atkins, B. Zane; Clouse, W. Darrin; Noll, Robert; Sampson, James; Williams, Timothy] Travis AFB, Heart Lung & Vasc Ctr, David Grant Med Ctr, Fairfield, CA USA.
RP Baker, AC (reprint author), Univ Calif Davis Med Ctr, Dept Surg, 2315 Stockton Blvd, Sacramento, CA 95817 USA.
EM aaron.baker@ucdmc.ucdavis.edu
NR 21
TC 1
Z9 1
U1 0
U2 2
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0890-5096
EI 1615-5947
J9 ANN VASC SURG
JI Ann. Vasc. Surg.
PD FEB
PY 2014
VL 28
IS 2
AR 489.e1
DI 10.1016/j.avsg.2013.11.001
PG 4
WC Surgery; Peripheral Vascular Disease
SC Surgery; Cardiovascular System & Cardiology
GA 302DY
UT WOS:000330583100031
PM 24246277
ER
PT J
AU Bhamare, S
Eason, T
Spottswood, S
Mannava, SR
Vasudevan, VK
Qian, D
AF Bhamare, Sagar
Eason, Thomas
Spottswood, Stephen
Mannava, Seetha R.
Vasudevan, Vijay K.
Qian, Dong
TI A multi-temporal scale approach to high cycle fatigue simulation
SO COMPUTATIONAL MECHANICS
LA English
DT Article
DE Space-time method; Enrichment; High cycle fatigue; Two-scale damage
model; Direct numerical simulation
ID FINITE-ELEMENT-METHOD; DAMAGE MECHANICS MODEL; YIELD SURFACE CURVATURE;
COHESIVE ZONE MODEL; CRACK-GROWTH; LIFE PREDICTION; MULTIRESOLUTION
CONTINUUM; DUCTILE FRACTURE; TIME; SPACE
AB High cycle fatigue (HCF) is a failure mechanism that dominates the life of many engineering components and structures. Time scale associated with HCF loading is a main challenge for developing a simulation based life prediction framework using conventional FEM approach. Motivated by these challenges, the extended space-time method (XTFEM) based on the time discontinuous Galerkin formulation is proposed. For HCF life prediction, XTFEM is coupled with a two-scale continuum damage mechanics model for evaluating the fatigue damage accumulation. Direct numerical simulations of HCF are performed using the proposed methodology on a notched specimen of AISI 304L steel. It is shown the total fatigue life can be accurately predicted using the proposed simulation approach based on XTFEM. The presented computational framework can be extended for predicting the service and the residual life of structural components.
C1 [Bhamare, Sagar; Mannava, Seetha R.; Vasudevan, Vijay K.] Univ Cincinnati, Coll Engn & Appl Sci, Dept Mech & Mat Engn, Cincinnati, OH 45221 USA.
[Eason, Thomas; Spottswood, Stephen] Air Force Res Lab, Air Vehicles Directorate, Wright Patterson AFB, OH 45433 USA.
[Qian, Dong] Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 USA.
RP Qian, D (reprint author), Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 USA.
EM dongqian.work@gmail.com
RI Qian, Dong/B-2326-2008
OI Qian, Dong/0000-0001-9367-0924
FU University of Texas at Dallas; National Science Foundation [1335204,
1334538]; State of Ohio, Department of Development and Third Frontier
Commission; General Dynamics Information Technologies (GDIT)/Air Force
Research Laboratory/RBSM [FA-8650-3446-29-SC-001]
FX The authors gratefully acknowledge the financial support of the start-up
fund from the University of Texas at Dallas, National Science Foundation
(Grants 1335204 and 1334538), the State of Ohio, Department of
Development and Third Frontier Commission, which provided funding in
support of "Ohio Center for Laser Shock Processing for Advanced Material
and Devices" for this research and the experimental and computational
equipment in the center that was used in this research. Authors would
also like to thank General Dynamics Information Technologies (GDIT)/Air
Force Research Laboratory/RBSM (contract # FA-8650-3446-29-SC-001), Mr.
KevinHunt, Program Monitor) for financial support of this research. Any
opinions, findings, conclusions, or recommendations expressed in this
chapter are those of the authors and do not necessarily reflect the
views of the NSF/Ohio Department of Development/AFRL. This work was also
supported in part by an allocation of computing time from the Ohio
Supercomputer Center.
NR 66
TC 1
Z9 1
U1 3
U2 14
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0178-7675
EI 1432-0924
J9 COMPUT MECH
JI Comput. Mech.
PD FEB
PY 2014
VL 53
IS 2
BP 387
EP 400
DI 10.1007/s00466-013-0915-y
PG 14
WC Mathematics, Interdisciplinary Applications; Mechanics
SC Mathematics; Mechanics
GA AA0TN
UT WOS:000330810400013
ER
PT J
AU Strang, AJ
Funke, GJ
Russell, SM
Dukes, AW
Middendorf, MS
AF Strang, Adam J.
Funke, Gregory J.
Russell, Sheldon M.
Dukes, Allen W.
Middendorf, Matthew S.
TI Physio-Behavioral Coupling in a Cooperative Team Task: Contributors and
Relations
SO JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE
LA English
DT Article
DE coupling; team; cooperative; coordination; interpersonal
ID UNINTENTIONAL INTERPERSONAL COORDINATION; SOCIAL-PSYCHOPHYSIOLOGICAL
COMPLIANCE; JOINT ACTION; TIME-SERIES; PHYSIOLOGICAL COMPLIANCE;
POSTURAL CONTROL; PERFORMANCE; DYNAMICS; SYNCHRONY; CONSTRAINTS
AB Research indicates that coactors performing cooperative tasks often exhibit spontaneous and unintended similarities in their physiological and behavioral responses-a phenomenon referred to here as physio-behavioral coupling (PBC). The purpose of this research was to identify contributors to PBC; examine relationships between PBC, team performance, and perceived team attributes (e. g., cohesion, trust); and compare a set of time-series measures(cross-correlation [CC], cross-recurrence quantification analysis [CRQA], and cross-fuzzy entropy [CFEn]) in their characterization of PBC across comparisons. To accomplish this, PBC was examined in human postural sway (PS) and cardiac interbeat intervals (IBIs) from dyadic teams performing a fast-paced puzzle task (Quadra-a variant of the video game Tetris). Results indicated that observed levels of PBC were not a chance occurrence, but instead driven by features of the team-task environment, and that PBC was likely influenced by similar individual task demands and interpersonal coordination dynamics that were not "unique" to a particular team. Correlation analysis revealed that PBC exhibited negative relationships with team performance and team attributes, which were interpreted to reflect complementary coordination (as opposed to mimicry) during task performance, potentially due to differentiated team roles. Finally, qualitative comparison of time-series measures used to characterize PBC indicated that CRQA percent recurrence and CFEn (both nonlinear measures) settled on mostly analogous characterizations, whereas linear CC did not. The disparity observed between the linear and nonlinear measures highlights underlying computational and interpretational differences between the two families of statistics and supports the use of multiple metrics for characterizing PBC.
C1 [Strang, Adam J.] Consortium Res Fellows Program, Alexandria, VA USA.
[Funke, Gregory J.; Russell, Sheldon M.; Dukes, Allen W.] Air Force Res Lab, Wright Patterson AFB, OH USA.
[Middendorf, Matthew S.] Middendorf Sci Serv Inc, Medway, OH USA.
RP Strang, AJ (reprint author), 2510 Fifth St,Area B,Bldg 840,E200-14, Wright Patterson AFB, OH 45433 USA.
EM adam.strang.ctr@us.af.mil
FU Air Force Office of Scientific Research (AFOSR)
FX This research was generously supported by an Air Force Office of
Scientific Research (AFOSR) grant (Program Manager: Dr. Jay Myung). The
authors would also like to thank our extended research team, including
Dr. Benjamin Knott, Brent Miller, Becky Brown, and Lauren Menke for
their contributions to this work.
NR 74
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U1 6
U2 23
PU AMER PSYCHOLOGICAL ASSOC
PI WASHINGTON
PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 USA
SN 0096-1523
EI 1939-1277
J9 J EXP PSYCHOL HUMAN
JI J. Exp. Psychol.-Hum. Percept. Perform.
PD FEB
PY 2014
VL 40
IS 1
BP 145
EP 158
DI 10.1037/a0033125
PG 14
WC Psychology; Psychology, Experimental
SC Psychology
GA AA1HX
UT WOS:000330848300015
PM 23750969
ER
PT J
AU Kim, JO
Ku, Z
Kazemi, A
Urbas, A
Kang, SW
Noh, SK
Lee, SJ
Krishna, S
AF Kim, Jun Oh
Ku, Zahyun
Kazemi, Alireza
Urbas, Augustine
Kang, Sang-Woo
Noh, Sam Kyu
Lee, Sang Jun
Krishna, Sanjay
TI Effect of barrier on the performance of sub-monolayer quantum dot
infrared photodetectors
SO OPTICAL MATERIALS EXPRESS
LA English
DT Article
AB We report on the effect of confinement barriers on the performance of InAs/InGaAs sub-monolayer quantum dot infrared photodetectors. Two samples with different AlxGa1-xAs barrier compositions (x = 0.07 for sample A and x = 0.20 for sample B) were grown with four-stacks of sub-monolayer quantum dot. Sample A had a peak response at similar to 7.8 mu m, whereas sample B demonstrated three peaks at similar to 3.5, similar to 5, and similar to 7.0 mu m with the intensity of the peaks strongly dependent on the applied bias. At 77 K, sample A and B had a detectivity of 1.2 x 10(11) cm.Hz(1/2)/W (Vb = -0.4 V bias) and 5.4 x 10(11) cm.Hz(1/2)/W (V-b = -1.5 V bias), respectively. (C) 2014 Optical Society of America
C1 [Kim, Jun Oh; Kazemi, Alireza; Krishna, Sanjay] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
[Ku, Zahyun; Urbas, Augustine] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Kang, Sang-Woo; Noh, Sam Kyu; Lee, Sang Jun] Korea Res Inst Stand & Sci, Div Ind Metrol, Taejon 305340, South Korea.
RP Kim, JO (reprint author), Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
EM sjlee@kriss.re.kr; skrishna@chtm.unm.edu
FU AFRL [FA4600-06-0003, FA9453-13-1-0284]; Korea Research Institute of
Standards and Science [JP2012-0001]
FX This work was supported by AFRL contracts FA4600-06-0003 and
FA9453-13-1-0284. We also acknowledge the Korea Research Institute of
Standards and Science grant, JP2012-0001.
NR 27
TC 1
Z9 1
U1 1
U2 12
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 2159-3930
J9 OPT MATER EXPRESS
JI Opt. Mater. Express
PD FEB 1
PY 2014
VL 4
IS 2
BP 198
EP 204
DI 10.1364/OME.4.000198
PG 7
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA 302AX
UT WOS:000330574700002
ER
PT J
AU Giese, JA
Yoon, JW
Wenner, BR
Allen, JW
Allen, MS
Magnusson, R
AF Giese, J. A.
Yoon, J. W.
Wenner, B. R.
Allen, J. W.
Allen, M. S.
Magnusson, R.
TI Guided-mode resonant coherent light absorbers
SO OPTICS LETTERS
LA English
DT Article
ID SPECTRAL-BAND; DIFFRACTION; ABSORPTION; FILTERS
AB We present a new class of coherent perfect absorbers based on guided-mode resonance in thin semiconductor films. Using particle-swarm optimization methods, we design a thin-film amorphous silicon grating that maximizes coherent modulation of the absorbance. The optimized device exhibits a maximum scattering power of similar to 94% and a power absorption limit approaching 100% at the 1550-nm wavelength. (C) 2014 Optical Society of America
C1 [Giese, J. A.; Yoon, J. W.; Magnusson, R.] Univ Texas Arlington, Dept Elect Engn, Arlington, TX 76019 USA.
[Wenner, B. R.; Allen, J. W.; Allen, M. S.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Magnusson, R (reprint author), Univ Texas Arlington, Dept Elect Engn, POB 19016, Arlington, TX 76019 USA.
EM magnusson@uta.edu
FU Air Force Research Laboratory; AMMTIAC Alion Science and Technology
[FA4600-06-D0003]
FX This work was supported by the Air Force Research Laboratory, Sensors
Directorate's 2013 Entrepreneurial Research Fund Program and the AMMTIAC
Contract (#FA4600-06-D0003) with Alion Science and Technology.
NR 18
TC 8
Z9 8
U1 3
U2 34
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
EI 1539-4794
J9 OPT LETT
JI Opt. Lett.
PD FEB 1
PY 2014
VL 39
IS 3
BP 486
EP 488
DI 10.1364/OL.39.000486
PG 3
WC Optics
SC Optics
GA 301ZO
UT WOS:000330571200019
PM 24487846
ER
PT J
AU Sell, JF
Gearba, MA
DePaola, BD
Knize, RJ
AF Sell, J. F.
Gearba, M. A.
DePaola, B. D.
Knize, R. J.
TI Collimated blue and infrared beams generated by two-photon excitation in
Rb vapor
SO OPTICS LETTERS
LA English
DT Article
ID FREQUENCY-UP-CONVERSION; EMISSION; COHERENT; RUBIDIUM
AB Utilizing two-photon excitation in hot Rb vapor we demonstrate the generation of collimated optical fields at 420 and 1324 nm. Input laser beams at 780 and 776 nm enter a heated Rb vapor cell collinear and circularly polarized, driving Rb atoms to the 5D(5/2) state. Under phase-matching conditions coherence among the 5S(1/2) -> 5P(3/2) -> 5D5/2 -> 6P(3/2) transitions produces a blue (420 nm) beam by four-wave mixing. We also observe a forward and backward propagating IR (1324 nm) beam, due to cascading decays through the 6S(1/2) -> 5P(1/2) states. Power saturation of the generated beams is investigated by scaling the input powers to greater than 200 mW, resulting in a coherent blue beam of 9.1 mWpower, almost an order of magnitude larger than previously achieved. We measure the dependences of both beams in relation to the Rb density, the frequency detuning between Rb ground-state hyperfine levels, and the input laser intensities. (C) 2014 Optical Society of America
C1 [Sell, J. F.; Gearba, M. A.; Knize, R. J.] US Air Force Acad, Dept Phys, Laser & Opt Res Ctr, Colorado Springs, CO 80840 USA.
[Gearba, M. A.] Univ So Mississippi, Dept Phys & Astron, Hattiesburg, MS 39406 USA.
[DePaola, B. D.] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA.
RP Sell, JF (reprint author), US Air Force Acad, Dept Phys, Laser & Opt Res Ctr, Colorado Springs, CO 80840 USA.
EM jerry.sell.1@gmail.com
FU Air Force Office of Scientific Research; National Science Foundation
[1206128]
FX The authors gratefully acknowledge support of this research by the Air
Force Office of Scientific Research and the National Science Foundation
(grant 1206128).
NR 17
TC 13
Z9 13
U1 3
U2 15
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
EI 1539-4794
J9 OPT LETT
JI Opt. Lett.
PD FEB 1
PY 2014
VL 39
IS 3
BP 528
EP 531
DI 10.1364/OL.39.000528
PG 4
WC Optics
SC Optics
GA 301ZO
UT WOS:000330571200030
PM 24487857
ER
PT J
AU Robin, C
Dajani, I
Pulford, B
AF Robin, Craig
Dajani, Iyad
Pulford, Benjamin
TI Modal instability-suppressing, single-frequency photonic crystal fiber
amplifier with 811 W output power
SO OPTICS LETTERS
LA English
DT Article
AB An acoustic-and gain-tailored Yb-doped polarization-maintaining photonic crystal fiber is used to demonstrate 811 W single-frequency output power with near diffraction-limited beam quality. The fiber core is composed of 7 individually doped segments arranged to create three distinct transverse acoustic regions; including one region that is Yb-free. The utility of the Yb-free region is to reduce coupling between the LP01 and LP11 modes to mitigate the modal instability. The application of thermal gradients is utilized in conjunction with the transverse acoustic tailoring to suppress stimulated Brillouin scattering. To the best of our knowledge, the 811 W output represents the highest power ever reported from a near diffraction-limited single-frequency fiber laser. (C) 2014 Optical Society of America
C1 [Robin, Craig; Dajani, Iyad; Pulford, Benjamin] Air Force Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
RP Dajani, I (reprint author), Air Force Res Lab, Directed Energy Directorate, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA.
EM Iyad.Dajani@kirtland.af.mil
FU High Energy Laser Joint Technology Office (HEL-JTO); Air Force Office of
Scientific Research (AFOSR)
FX This work was partially funded by the High Energy Laser Joint Technology
Office (HEL-JTO) and the Air Force Office of Scientific Research
(AFOSR).
NR 16
TC 31
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U1 2
U2 21
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
EI 1539-4794
J9 OPT LETT
JI Opt. Lett.
PD FEB 1
PY 2014
VL 39
IS 3
BP 666
EP 669
DI 10.1364/OL.39.000666
PG 4
WC Optics
SC Optics
GA 301ZO
UT WOS:000330571200067
PM 24487894
ER
PT J
AU Roberts, MB
Gschwender, LJ
Snyder, CE
AF Roberts, Marcie B.
Gschwender, Lois J.
Snyder, Carl E., Jr.
TI Selection of Low Ozone Depleting Oxygen System Cleaning Solvents
SO TRIBOLOGY & LUBRICATION TECHNOLOGY
LA English
DT Article
DE Solvents; Gas Turbine Oils; Hydraulic Fluids; Greases; Seals; Static;
O-Ring
AB CFC113 (1,1,2-trichlorotrifluoroethane) was widely used in the military for removing dirt and lubricants from equipment. Users sought substitute "environmentally friendly" solvents due to banning of the ozone-depleting compounds. In this work, for wipe and liquid cleaning of liquid and gaseous oxygen systems, seven solvents, plus CFC113 as a baseline, were evaluated as CFC113 replacements. First, the cleaning ability was evaluated with common military lubricants and other common contaminants anticipated to be found on oxygen system components, MIL-PRF-7808 (ester-based gas turbine engine oil), MIL-PRF-83282 (hydraulic fluid), MIL-PRF-27617 (perfluoropolyalkylether-based PTFE thickened grease), MIL-PRF-27617 sprinkled with Arizona road dust, SAE 20W-50 tube bending oil, and 3M 250 tape residue. These solvents were also tested for compatibility with oxygen systems using the liquid oxygen mechanical impact test and by determining the autogenous ignition temperature in pure oxygen. Candidate solvents must also be compatible with elastomer seals. None of the solvents caused permanent damage to the seals. No single solvent performed as well as nor was as universal as CFC113 but several were close.
C1 [Roberts, Marcie B.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Gschwender, Lois J.; Snyder, Carl E., Jr.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH USA.
RP Roberts, MB (reprint author), Univ Dayton, Res Inst, Dayton, OH 45469 USA.
NR 3
TC 0
Z9 0
U1 0
U2 2
PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS
PI PARK RIDGE
PA 840 BUSSE HIGHWAY, PARK RIDGE, IL 60068 USA
SN 1545-858X
J9 TRIBOL LUBR TECHNOL
JI Tribol. Lubr. Technol.
PD FEB
PY 2014
VL 70
IS 2
BP 36
EP 43
PG 8
WC Engineering, Mechanical
SC Engineering
GA AA0UJ
UT WOS:000330812600011
ER
PT J
AU Fruh, C
Jah, MK
AF Frueh, Carolin
Jah, Moriba K.
TI Coupled orbit-attitude motion of high area-to-mass ratio (HAMR) objects
including efficient self-shadowing
SO ACTA ASTRONAUTICA
LA English
DT Article
DE Space debris; Orbit dynamics; Attitude dynamics; High area-to-mass
ratio; Perturbations; Rapid self-shadowing algorithm
ID SOLAR-RADIATION PRESSURE; SPACE DEBRIS
AB This paper shows the effect of self-shadowing on the coupled attitude-orbit dynamics of objects with high area-to-mass ratios (HAMR) in simulating standard multi layer insulation materials (MLI) as tilted single rigid sheets. Efficient and computationally fast self-shadowing methods have been developed. This includes an approximate self-shadowing method and a rapid exact self-shadowing method. Accuracy considerations are made and the effect of a chosen tessellation is shown. The coupled orbit-attitude perturbations of solar radiation pressure and Earth gravity field are taken into account. The results are compared to the attitude-orbit dynamics, when neglecting self-shadowing effects. An averaged physical shadow-map model is developed and compared to the full self-shadowing simulation. The combined effect of solar radiation pressure and self-shadowing leads to a rapid spin-up of the objects, even though they have uniform reflection properties. As a result, the observed brightness of these objects is subject to rapid changes. (C) 2013 IAA. Published by Elsevier Ltd. All rights reserved.
C1 [Frueh, Carolin] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA.
[Frueh, Carolin; Jah, Moriba K.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Fruh, C (reprint author), Univ New Mexico, Dept Mech Engn, 1 Univ New Mexico MSC01 1150, Albuquerque, NM 87131 USA.
EM carolin.frueh@gmail.com
OI Jah, Moriba/0000-0003-1109-0374; Fruh, Carolin/0000-0002-0240-5509
FU National Research Council
FX The main author would like to acknowledge the support of the National
Research Council, which enabled this work. The main author would like to
thank the Air Force Research Laboratory Kirtland and the Mechanical
Engineering Department, University of New Mexico.
NR 27
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U1 2
U2 10
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0094-5765
EI 1879-2030
J9 ACTA ASTRONAUT
JI Acta Astronaut.
PD FEB-MAR
PY 2014
VL 95
BP 227
EP 241
DI 10.1016/j.actaastro.2013.11.017
PG 15
WC Engineering, Aerospace
SC Engineering
GA 300VT
UT WOS:000330492800021
ER
PT J
AU Pellicori, SF
Martinez, CL
Hausgen, P
Wilt, D
AF Pellicori, Samuel F.
Martinez, Carol L.
Hausgen, Paul
Wilt, David
TI Development and testing of coatings for orbital space radiation
environments
SO APPLIED OPTICS
LA English
DT Article
ID OPTICAL-PROPERTIES; ZINC-OXIDE; FILMS
AB Specific coating processes and materials were investigated in the quest to develop multilayer coatings with greater tolerance to space radiation exposure. Ultraviolet reflection (UVR) and wide-band antireflection (AR) multilayer coatings were deposited on solar cell covers and test substrates and subsequently exposed to simulated space environments and also flown on the Materials International Space Station Experiment-7 (MISSE-7) to determine their space environment stability. Functional solar cells integrated with these coatings underwent simulated UV and MISSE-7 low earth orbit flight exposure. The effects of UV, proton, and atomic oxygen exposure on coatings and on assembled solar cells as related to the implemented deposition processes and material compositions were small. The UVR/AR coatings protected flexible polymer substrate materials that are intended for future flexible multijunction cell arrays to be deployed from rolls. Progress was made toward developing stable and protective coatings for extended space-mission applications. Test results are presented. (C) 2014 Optical Society of America
C1 [Pellicori, Samuel F.; Martinez, Carol L.] Opt Coating Solut Inc, Camarillo, CA 93010 USA.
[Pellicori, Samuel F.] Pellicori Opt Consulting, Santa Barbara, CA 93160 USA.
[Hausgen, Paul; Wilt, David] Kirtland AFB, Space Vehicles Directorate, Air Force Res Lab, Albuquerque, NM 87116 USA.
RP Pellicori, SF (reprint author), Opt Coating Solut Inc, 2386 Grandview Dr, Camarillo, CA 93010 USA.
EM pellopt@cox.net
FU Small Business Innovation Research (SBIR); SBIR [FA945306-C-0045,
FA9453-12M- 0328]
FX These results were derived from studies performed by the authors as part
of Air Force sponsored Small Business Innovation Research (SBIR)
projects administered by Air Force Research Laboratory (AFRL) Space
Vehicles Directorate, Kirtland AFB. SBIR contract FA945306-C-0045 and
FA9453-12M- 0328 technical point of contact (TPOC) was David Wilt. We
acknowledge the participation of M. Fulton, advisor, and of the coating
facilities that performed the depositions: author C. Martinez sputtered
the PDCMS layers and developed the AZO coating process at LohnStar
Optics, Inc, Escondido; Thin Film Technology (now Materion Corp),
Buellton, California, deposited the E-beam IAD layers; PIAD depositions
were made by Tecport Optics, Orlando, Florida; Dr. Simon Liu at The
Aerospace Corporation, California, irradiated samples to the simulated
GPS spectrum; proton irradiation was performed at Core Systems,
Sunnyvale, California; Dr. Sharon Miller, NASA Glenn performed Atomic
Oxygen exposure; Jim Crimmins at BrightLeaf Technologies tested
UVexposure of integrated cells; samples were included in MISSE-7 and
evaluated through author Dr. Paul Hausgen, AFRL, Space Vehicles
Directorate, Kirtland AFB. Polymer substrate materials (which are still
in development) were provided by AFRL and Vanguard Space Technologies.
We thank the reviewer for valuable comments and suggestions. Further
development is pending, which will include more exposure tests of
XUVR/AR and TCO coatings on flexible substrate alternatives and coatings
integrated with MJ cells. A more statistically significant number of
samples will be produced and tested.
NR 17
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Z9 4
U1 1
U2 13
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1559-128X
EI 2155-3165
J9 APPL OPTICS
JI Appl. Optics
PD FEB 1
PY 2014
VL 53
IS 4
BP A339
EP A350
DI 10.1364/AO.53.00A339
PG 12
WC Optics
SC Optics
GA 300SS
UT WOS:000330484500048
PM 24514237
ER
PT J
AU Junek, WN
Roman-Nieves, JI
Woods, MT
AF Junek, W. N.
Roman-Nieves, J. I.
Woods, M. T.
TI Tectonic implications of earthquake mechanisms in Svalbard
SO GEOPHYSICAL JOURNAL INTERNATIONAL
LA English
DT Article
DE Seismicity and tectonics; Crustal structure; Arctic region
ID SURFACE-WAVE DISPERSION; TELESEISMIC RECEIVER FUNCTIONS; CURRENT PLATE
MOTIONS; CRUSTAL STRUCTURE; UPPER-MANTLE; INTRAPLATE EARTHQUAKES;
STRUCTURE BENEATH; INVERSION; LITHOSPHERE; SPITSBERGEN
AB A new model for the local structure of the Svalbard archipelago, based on joint inversion of teleseismic receiver functions and regional surface wave dispersion, is optimized for waveform simulation at near-regional distances, thus allowing a better match between synthetic and observed waveforms for local earthquakes. We have used this model to calculate a moment tensor for the M-w 6.0 event of 2008 February 21 that occurred off Spitsbergen's southeast coast, and have reconciled the regional solution with the teleseismic solution. We have also compiled moment tensor solutions for other members of the earthquake sequence, which allow us to quantify the direction of maximum horizontal stress for the region. This direction does not align with the local direction of plate motion, and the difference between the two directions indicates the importance of local stress perturbations on the earthquake process near Svalbard.
C1 [Junek, W. N.; Roman-Nieves, J. I.; Woods, M. T.] Air Force Tech Applicat Ctr, Patrick AFB, FL 32925 USA.
RP Junek, WN (reprint author), Air Force Tech Applicat Ctr, Patrick AFB, FL 32925 USA.
EM william.junek@us.af.mil
NR 39
TC 4
Z9 4
U1 4
U2 8
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0956-540X
EI 1365-246X
J9 GEOPHYS J INT
JI Geophys. J. Int.
PD FEB
PY 2014
VL 196
IS 2
BP 1152
EP 1161
DI 10.1093/gji/ggt448
PG 10
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 301MV
UT WOS:000330537300040
ER
PT J
AU Bulmer, JS
Rickel, DG
Haugan, TJ
AF Bulmer, John S.
Rickel, Dwight G.
Haugan, Timothy J.
TI Switching Response of YBa2Cu3O7-delta to Simultaneous Application of
Near-Critical Current, Field, and Temperature
SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
LA English
DT Article
DE Cryotrons; high pulsed magnetic field; Lorentz force free;
superconducting to normal (SN) transition; YBa2Cu3O7-x
ID PULSED MAGNETIC-FIELD; THIN-FILMS; TRANSPORT MEASUREMENTS;
MICROWAVE-ABSORPTION; FLUX-FLOW; SUPERCONDUCTORS; PHOTORESPONSE; DRIVEN;
STATE
AB We injected a dc near-critical current through a yttrium-barium-copper oxide (YBCO) superconductor microbridge in the presence of a high pulsed ac magnetic field (10 MT/s up to 20 T) parallel to the dc current flow-the so-called Lorentz force free configuration. A transmitted RF signal probed the YBCO mixed state that followed the ac magnetic field cycles. Based on inflection points on this modulated RF signal, we found where the YBCO switched from a superconducting to normal (S-N) state. Injecting a dc near-critical current does not affect the S-N switch time or the S-N field point, at least 2 degrees below the critical temperature, i.e., T-c. Rather, the injected dc current only suppresses the RF signal's magnitude across its duration. At 5 degrees below T-c, injecting a current does modify the S-N transition point and shorten the switch time. Applications for cryotron-like switches in superconducting magnetic energy storage devices are discussed.
C1 [Bulmer, John S.] Hyper Tech Res Inc, Columbus, OH 43228 USA.
[Rickel, Dwight G.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Haugan, Timothy J.] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
RP Bulmer, JS (reprint author), Hyper Tech Res Inc, Columbus, OH 43228 USA.
EM jb833@cam.ac.uk
FU National Science Foundation [DMR-0654118]; State of Florida; U.S.
Department of Energy
FX Manuscript received January 23, 2013; revised October 1, 2013 and
October 30, 2013; accepted November 10, 2013. Date of publication
November 21, 2013; date of current version December 27, 2013. This work
was supported in part by the National Science Foundation Cooperative
under Agreement DMR-0654118, by the State of Florida, and by the U.S.
Department of Energy. This paper was recommended by Associate Editor J.
O. Willis.
NR 39
TC 0
Z9 0
U1 2
U2 11
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1051-8223
EI 1558-2515
J9 IEEE T APPL SUPERCON
JI IEEE Trans. Appl. Supercond.
PD FEB
PY 2014
VL 24
IS 1
AR 5700609
DI 10.1109/TASC.2013.2292116
PG 9
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 298AU
UT WOS:000330297100009
ER
PT J
AU Wong, PH
Dickson, SD
Coop, CA
AF Wong, Priscilla H.
Dickson, Scott D.
Coop, Christopher A.
TI Allergic Contact Stomatitis From Orthodontic Adhesives
SO JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY
LA English
DT Meeting Abstract
CT Annual Meeting of the American-Academy-of-Allergy-Asthma-and-Immunology
(AAAAI)
CY FEB 28-MAR 04, 2014
CL San Diego, CA
SP Amer Acad Allergy Asthma & Immunol
C1 [Wong, Priscilla H.; Coop, Christopher A.] Wilford Hall Ambulatory Surg Ctr, Lackland AFB, TX USA.
[Dickson, Scott D.] 56th Med Grp, Luke AFB, AZ USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0091-6749
EI 1097-6825
J9 J ALLERGY CLIN IMMUN
JI J. Allergy Clin. Immunol.
PD FEB
PY 2014
VL 133
IS 2
SU S
MA 684
BP AB197
EP AB197
PG 1
WC Allergy; Immunology
SC Allergy; Immunology
GA 297FO
UT WOS:000330241300681
ER
PT J
AU Aga, RS
Lombardi, JP
Bartsch, CM
Heckman, EM
AF Aga, Roberto S., Jr.
Lombardi, Jack P., III
Bartsch, Carrie M.
Heckman, Emily M.
TI Performance of a Printed Photodetector on a Paper Substrate
SO IEEE PHOTONICS TECHNOLOGY LETTERS
LA English
DT Article
DE Aerosol jet; flexible electronics; optical sensor; organic
semiconductors; semiconductor devices
ID SOLAR-CELLS; EFFICIENCY
AB A multilayer polymeric photodetector fabricated on a paper substrate by inkjet and aerosol jet printing has been demonstrated. It employs a poly(3-hexylthiophene) and C61-butyric acid methyl ester blend (P3HT:PCBM) as a photoactive layer sandwiched between a silver bottom electrode and a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) top electrode. A deoxyribonucleic acid biopolymer interlayer between P3HT: PCBM and PEDOT: PSS top electrode enables the printing of the PEDOT: PSS on P3HT: PCBM. The printed photodetector exhibits a photoresponse when photoexcited by four different light emitting diodes with center wavelengths of 405, 465, 525, and 635 nm. The highest responsivity was observed at 405 nm. The responsivity to pulsed light reveals a strong frequency dependence from 25 to 1000 Hz.
C1 [Aga, Roberto S., Jr.; Lombardi, Jack P., III; Bartsch, Carrie M.; Heckman, Emily M.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Aga, RS (reprint author), Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
EM roberto.aga.ctr.ph@us.af.mil; jack.lombardi@us.af.mil;
carrie.bartsch@us.af.mil; emily.heckman@us.af.mil
FU National Research Council
FX The work of R. S. Aga, Jr. was supported by the National Research
Council.
NR 19
TC 4
Z9 4
U1 5
U2 53
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1041-1135
EI 1941-0174
J9 IEEE PHOTONIC TECH L
JI IEEE Photonics Technol. Lett.
PD FEB 1
PY 2014
VL 26
IS 3
BP 305
EP 308
DI 10.1109/LPT.2013.2292830
PG 4
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA 293SH
UT WOS:000329993500026
ER
PT J
AU Ilin, R
Zhang, J
Perlovsky, L
Kozma, R
AF Ilin, Roman
Zhang, Jun
Perlovsky, Leonid
Kozma, Robert
TI Vague-to-crisp dynamics of percept formation modeled as operant
(selectionist) process
SO COGNITIVE NEURODYNAMICS
LA English
DT Article
DE Operant conditioning; Operant learning; Dynamic logic; Mixture models;
Model selection; Intrinsic reward
ID NETWORK MODEL; REWARD; MOTIVATION; DOPAMINE; TRACKING; NEURONS
AB We model the vague-to-crisp dynamics of forming percepts in the brain by combining two methodologies: dynamic logic (DL) and operant learning process. Forming percepts upon the presentation of visual inputs is likened to model selection based on sampled evidence. Our framework utilizes the DL in selecting the correct "percept" among competing ones, but uses an intrinsic reward mechanism to allow stochastic online update in lieu of performing the optimization step of the DL framework. We discuss the connection of our framework with cognitive processing and the intentional neurodynamic cycle.
C1 [Ilin, Roman; Perlovsky, Leonid] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH USA.
[Zhang, Jun] Univ Michigan, Dept Psychol, Ann Arbor, MI 48109 USA.
[Kozma, Robert] Univ Memphis, Dept Math Sci, Memphis, TN 38152 USA.
RP Zhang, J (reprint author), Univ Michigan, Dept Psychol, 530 Church St, Ann Arbor, MI 48109 USA.
EM roman.ilin@wpafb.af.mil; junz@umich.edu; leonid.perlovsky@wpafb.af.mil;
rkozma@memphis.edu
FU United Stated Air Force Office of Scientific Research, Department of the
Air Force [11RY06COR]
FX This work is supported in part by the United Stated Air Force Office of
Scientific Research, Department of the Air Force, work order #11RY06COR.
NR 33
TC 1
Z9 1
U1 0
U2 1
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1871-4080
EI 1871-4099
J9 COGN NEURODYNAMICS
JI Cogn. Neurodynamics
PD FEB
PY 2014
VL 8
IS 1
BP 71
EP 80
DI 10.1007/s11571-013-9262-0
PG 10
WC Neurosciences
SC Neurosciences & Neurology
GA 288NM
UT WOS:000329618700007
PM 24465287
ER
PT J
AU Bergman, MS
Zhuang, ZQ
Hanson, D
Heimbuch, BK
McDonald, MJ
Palmiero, AJ
Shaffer, RE
Harnish, D
Husband, M
Wander, JD
AF Bergman, Michael S.
Zhuang, Ziqing
Hanson, David
Heimbuch, Brian K.
McDonald, Michael J.
Palmiero, Andrew J.
Shaffer, Ronald E.
Harnish, Delbert
Husband, Michael
Wander, Joseph D.
TI Development of an Advanced Respirator Fit-Test Headform
SO JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
LA English
DT Article
DE N95; fit-test; headform; N95 respirator; advanced headform
ID FILTERING-FACEPIECE RESPIRATORS; WORKPLACE PROTECTION FACTORS; TOTAL
INWARD LEAKAGE; FACE SEAL LEAKAGE; FITTING CHARACTERISTICS; PERFORMANCE;
PENETRATION; WORKERS
AB Improved respirator test headforms are needed to measure the fit of N95 filtering facepiece respirators (FFRs) for protection studies against viable airborne particles. A Static (i.e., non-moving, non-speaking) Advanced Headform (StAH) was developed for evaluating the fit of N95 FFRs. The StAH was developed based on the anthropometric dimensions of a digital headform reported by the National Institute for Occupational Safety and Health (NIOSH) and has a silicone polymer skin with defined local tissue thicknesses. Quantitative fit factor evaluations were performed on seven N95 FFR models of various sizes and designs. Donnings were performed with and without a pre-test leak checking method. For each method, four replicate FFR samples of each of the seven models were tested with two donnings per replicate, resulting in a total of 56 tests per donning method. Each fit factor evaluation was comprised of three 86-sec exercises: Normal Breathing (NB, 11.2 liters per min (lpm)), Deep Breathing (DB, 20.4 lpm), then NB again. A fit factor for each exercise and an overall test fit factor were obtained. Analysis of variance methods were used to identify statistical differences among fit factors (analyzed as logarithms) for different FFR models, exercises, and testing methods. For each FFR model and for each testing method, the NB and DB fit factor data were not significantly different (P > 0.05). Significant differences were seen in the overall exercise fit factor data for the two donning methods among all FFR models (pooled data) and in the overall exercise fit factor data for the two testing methods within certain models. Utilization of the leak checking method improved the rate of obtaining overall exercise fit factors 100. The FFR models, which are expected to achieve overall fit factors 100 on human subjects, achieved overall exercise fit factors 100 on the StAH. Further research is needed to evaluate the correlation of FFRs fitted on the StAH to FFRs fitted on people. [Supplementary materials are available for this article. Go to the publisher's online edition of Journal of Occupational and Environmental Hygiene for the following free supplemental resource: a file providing detailed information on the advanced head form design and fabrication process.]
C1 [Bergman, Michael S.; Zhuang, Ziqing; Palmiero, Andrew J.; Shaffer, Ronald E.] NIOSH, Natl Personal Protect Technol Lab, Pittsburgh, PA 15236 USA.
[Hanson, David] Hanson Robot Inc, Plano, TX USA.
[Heimbuch, Brian K.; McDonald, Michael J.; Harnish, Delbert] Appl Res Associates Inc, Panama City, FL USA.
[Husband, Michael] US Dept HHS, Off Assistant Secretary Preparedness & Response, Biomed Adv Res & Dev Author, Washington, DC 20201 USA.
[Wander, Joseph D.] Air Force Res Lab, Tyndall AFB, FL USA.
RP Zhuang, ZQ (reprint author), NIOSH, Technol Res Branch, Natl Personal Protect Technol Lab, Ctr Dis Control & Prevent, 626 Cochrans Mill Rd,Bldg 13,POB 18070, Pittsburgh, PA 15236 USA.
EM zaz3@cdc.gov
RI Shaffer, Ronald/I-2134-2012; Zhuang, Ziqing/K-5462-2012
FU U.S. Department of Health and Human Services; Office of Assistant
Secretary for Preparedness and Response (ASPR), Biomedical Advanced
Research and Development Authority (BARDA) through Air Force Research
Laboratory (AFRL)
FX This research was funded by the U.S. Department of Health and Human
Services, the Office of Assistant Secretary for Preparedness and
Response (ASPR), Biomedical Advanced Research and Development Authority
(BARDA) through an interagency agreement with the Air Force Research
Laboratory (AFRL).
NR 40
TC 3
Z9 3
U1 0
U2 11
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 1545-9624
EI 1545-9632
J9 J OCCUP ENVIRON HYG
JI J. Occup. Environ. Hyg.
PD FEB 1
PY 2014
VL 11
IS 2
BP 117
EP 125
DI 10.1080/15459624.2013.816434
PG 9
WC Environmental Sciences; Public, Environmental & Occupational Health
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health
GA 278GM
UT WOS:000328877200009
PM 24369934
ER
PT J
AU Letcher, T
Shen, MHH
Scott-Emuakpor, O
George, T
Cross, C
AF Letcher, Todd
Shen, M. -H. H.
Scott-Emuakpor, Onome
George, Tommy
Cross, Charles
TI Strain Rate and Loading Waveform Effects on an Energy-Based Fatigue Life
Prediction for AL6061-T6
SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE
ASME
LA English
DT Article
AB The energy-based lifing method is based on the theory that the cumulative energy in all hysteresis loops of a specimens' lifetime is equal to the energy in a monotonic tension test. Based on this theory, fatigue life can be calculated by dividing monotonic strain energy by a hysteresis energy model, which is a function of stress amplitude. Recent studies have focused on developing this method for a sine wave loading pattern-a variable strain rate. In order to remove the effects of a variable strain rate throughout the fatigue cycle, a constant strain rate triangle wave loading pattern was tested. The testing was conducted at various frequencies to evaluate the effects of multiple constant strain rates. Hysteresis loops created with sine wave loading and triangle loading were compared. The effects of variable and constant strain rate loading patterns on hysteresis loops throughout a specimens' fatigue life are examined.
C1 [Letcher, Todd; Shen, M. -H. H.] Ohio State Univ, Mech & Aerosp Engn Dept, Columbus, OH 43210 USA.
[Scott-Emuakpor, Onome; George, Tommy; Cross, Charles] Air Force Res Lab, Turbine Engine Fatigue Facil, Wright Patterson AFB, OH 45433 USA.
RP Letcher, T (reprint author), Ohio State Univ, Mech & Aerosp Engn Dept, Bldg 148,201 W 19th Ave, Columbus, OH 43210 USA.
EM etcher.7@osu.edu; shen.1@osu.edu
NR 19
TC 0
Z9 0
U1 1
U2 7
PU ASME
PI NEW YORK
PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0742-4795
EI 1528-8919
J9 J ENG GAS TURB POWER
JI J. Eng. Gas. Turbines Power-Trans. ASME
PD FEB
PY 2014
VL 136
IS 2
AR 022502
DI 10.1115/1.4025497
PG 6
WC Engineering, Mechanical
SC Engineering
GA 277ZX
UT WOS:000328858900015
ER
PT J
AU Rumi, M
Bunning, TJ
AF Rumi, Mariacristina
Bunning, Timothy J.
TI Polymers in Photonics: Controlling Information by Manipulating Light
SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
LA English
DT Editorial Material
C1 [Rumi, Mariacristina; Bunning, Timothy J.] Air Force Res Lab, Mat & Mfg Directorate, AFRL MLPJ, Wright Patterson AFB, OH 45433 USA.
RP Rumi, M (reprint author), Air Force Res Lab, Mat & Mfg Directorate, AFRL MLPJ, Wright Patterson AFB, OH 45433 USA.
NR 0
TC 0
Z9 0
U1 0
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-6266
EI 1099-0488
J9 J POLYM SCI POL PHYS
JI J. Polym. Sci. Pt. B-Polym. Phys.
PD FEB 1
PY 2014
VL 52
IS 3
SI SI
BP 157
EP 157
DI 10.1002/polb.23432
PG 1
WC Polymer Science
SC Polymer Science
GA 274PM
UT WOS:000328618500001
ER
PT J
AU Smith, DM
Li, CY
Bunning, TJ
AF Smith, Derrick M.
Li, Christopher Y.
Bunning, Timothy J.
TI Light-Directed Mesoscale Phase Separation via Holographic Polymerization
SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
LA English
DT Review
DE liquid-crystalline polymers (LCP); phase separation;
photopolymerization; self-assembly
ID DISPERSED LIQUID-CRYSTALS; DRIVEN DIFFUSION-MODEL; THIOL-ENE
PHOTOPOLYMERIZATION; BLOCK-COPOLYMER ELECTROLYTES; PQ-PMMA PHOTOPOLYMER;
PHOTONIC CRYSTALS; GRATING FORMATION; DIFFRACTION GRATINGS; REFLECTION
GRATINGS; VOLUME GRATINGS
AB Holographic polymerization (HP) is a simple, fast, and attractive technique to fabricate one-, two- and three-dimensional complex and functional nanostructures. Not only does the coupling of photopolymerization and light-directed phase separation HP process render rich polymer physics to the latter, it also leads to profound morphology-sensitive properties of HP structures, ranging from nano- to mesoscales. The past two decades witnessed tremendous progress in the field and in this review, we will probe the fundamental characteristics and parameters of HP, exemplify the versatility of this nanofabrication technique by presenting a diverse selection of HP patterned soft materials, and discuss some unique applications of such HP structures. (c) 2013 Wiley Periodicals, Inc.
C1 [Smith, Derrick M.; Li, Christopher Y.] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
[Bunning, Timothy J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Li, CY (reprint author), Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
EM Chrisli@drexel.edu; Timothy.Bunning@wpafb.af.mil
RI Li, Christopher/A-1603-2012
FU National Science Foundation [CMMI-1334067, 1200385, DMR-1308958]; NSF
IGERT; GRFP; AFOSR
FX Christopher Y. Li is grateful for the support from the National Science
Foundation through grants CMMI-1334067, 1200385, and DMR-1308958.
Derrick M. Smith would like to acknowledge the NSF IGERT and GRFP
fellowship support. The work over the years at the Air Force Research
Laboratory has been partially supported by AFOSR. The authors thank the
many long-standing interactions with a number of key
contributors/collaborators in the field, including L. Natarajan, V.
Tondiglia, R. Sutherland, T, White, R. Vaia, T. Kyu, W. Adams, M.
Birnkrant, L. De Sio, C. Umeton, T. Huang, and V. Hsiao. They also thank
R. Marron and M. Birnkrant for their contribution to the hPEM work.
NR 151
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Z9 13
U1 11
U2 56
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-6266
EI 1099-0488
J9 J POLYM SCI POL PHYS
JI J. Polym. Sci. Pt. B-Polym. Phys.
PD FEB 1
PY 2014
VL 52
IS 3
SI SI
BP 232
EP 250
DI 10.1002/polb.23413
PG 19
WC Polymer Science
SC Polymer Science
GA 274PM
UT WOS:000328618500006
ER
PT J
AU Kahler, SW
Arge, CN
Akiyama, S
Gopalswamy, N
AF Kahler, S. W.
Arge, C. N.
Akiyama, S.
Gopalswamy, N.
TI Do Solar Coronal Holes Affect the Properties of Solar Energetic Particle
Events?
SO SOLAR PHYSICS
LA English
DT Article
DE Energetic particles - acceleration; Magnetic fields - models; Coronal
mass ejections - low coronal signatures
ID INTERPLANETARY SHOCKS; MASS EJECTIONS; SEP EVENTS; WIND REGIONS; FIELD;
PROPAGATION; CMES; ACCELERATION; HELIOSPHERE; TIMES
AB The intensities and timescales of gradual solar energetic particle (SEP) events at 1 AU may depend not only on the characteristics of shocks driven by coronal mass ejections (CMEs), but also on large-scale coronal and interplanetary structures. It has long been suspected that the presence of coronal holes (CHs) near the CMEs or near the 1-AU magnetic footpoints may be an important factor in SEP events. We used a group of 41 Ea parts per thousand 20 MeV SEP events with origins near the solar central meridian to search for such effects. First we investigated whether the presence of a CH directly between the sources of the CME and of the magnetic connection at 1 AU is an important factor. Then we searched for variations of the SEP events among different solar wind (SW) stream types: slow, fast, and transient. Finally, we considered the separations between CME sources and CH footpoint connections from 1 AU determined from four-day forecast maps based on Mount Wilson Observatory and the National Solar Observatory synoptic magnetic-field maps and the Wang-Sheeley-Arge model of SW propagation. The observed in-situ magnetic-field polarities and SW speeds at SEP event onsets tested the forecast accuracies employed to select the best SEP/CH connection events for that analysis. Within our limited sample and the three analytical treatments, we found no statistical evidence for an effect of CHs on SEP event peak intensities, onset times, or rise times. The only exception is a possible enhancement of SEP peak intensities in magnetic clouds.
C1 [Kahler, S. W.; Arge, C. N.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Akiyama, S.] Catholic Univ Amer, Washington, DC 20064 USA.
[Gopalswamy, N.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
RP Kahler, SW (reprint author), Air Force Res Lab, Space Vehicles Directorate, 3550 Aberdeen Ave, Kirtland AFB, NM 87117 USA.
EM stephen.kahler@kirtland.af.mil; nick.arge@kirtland.af.mil;
sachiko.akiyama@nasa.gov; nat.gopalswamy@nasa.gov
FU AFOSR Task [2301RDZ4]; NASA's LWS TRT program
FX SWK was funded by AFOSR Task 2301RDZ4. NG and SA were supported by
NASA's LWS TR&T program. CME data were taken from the CDAW LASCO
catalog. This CME catalog is generated and maintained at the CDAW Data
Center by NASA and The Catholic University of America in cooperation
with the Naval Research Laboratory. SOHO is a project of international
cooperation between ESA and NASA. EIT images of Figure 1 were obtained
from the EIT instrument webpage. We thank Ian Richardson for providing
the SW stream listings and Don Reames for the use of the EPACT proton
data. We used Wind data provided by J.H. King, N. Papatashvilli, and R.
Lepping at the NASA/GSFC CDAW website.
NR 54
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U1 7
U2 17
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-0938
EI 1573-093X
J9 SOL PHYS
JI Sol. Phys.
PD FEB
PY 2014
VL 289
IS 2
BP 657
EP 673
DI 10.1007/s11207-013-0427-0
PG 17
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 264JK
UT WOS:000327872800016
ER
PT J
AU Veremyev, A
Sorokin, A
Boginski, V
Pasiliao, EL
AF Veremyev, Alexander
Sorokin, Alexey
Boginski, Vladimir
Pasiliao, Eduardo L.
TI Minimum vertex cover problem for coupled interdependent networks with
cascading failures
SO EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
LA English
DT Article
DE Interdependent networks; Minimum vertex cover; Cascading failures; Depth
of cascade; Linear 0-1 formulations; LP approximation
ID INFRASTRUCTURES
AB This paper defines and analyzes a generalization of the classical minimum vertex cover problem to the case of two-layer interdependent networks with cascading node failures that can be caused by two common types of interdependence. Previous studies on interdependent networks mainly addressed the issues of cascading failures from a numerical simulations perspective, whereas this paper proposes an exact optimization-based approach for identifying a minimum-cardinality set of nodes, whose deletion would effectively disable both network layers through cascading failure mechanisms. We analyze the computational complexity and linear 0-1 formulations of the defined problems, as well as prove an LP approximation ratio result that generalizes the well-known 2-approximation for the classical minimum vertex cover problem. In addition, we introduce the concept of a "depth of cascade" (i.e., the maximum possible length of a sequence of cascading failures for a given interdependent network) and show that for any problem instance this parameter can be explicitly derived via a polynomial-time procedure. (C) 2013 Elsevier B.V. All rights reserved.
C1 [Veremyev, Alexander; Pasiliao, Eduardo L.] USAF, Res Lab, Munit Directorate, Eglin AFB, FL 32542 USA.
[Veremyev, Alexander; Sorokin, Alexey; Boginski, Vladimir] Univ Florida, Dept Ind & Syst Engn, Gainesville, FL 32611 USA.
RP Boginski, V (reprint author), Univ Florida, Dept Ind & Syst Engn, 303 Weil Hall, Gainesville, FL 32611 USA.
EM averemyev@ufl.edu; sorokin@ufl.edu; vb@ufl.edu; pasiliao@eglin.af.mil
FU Air Force Research Laboratory (AFRL); Defense Threat Reduction Agency
(DTRA); AFRL Mathematical Modeling and Optimization Institute; National
Research Council Research Associateship Award at AFRL
FX This research was supported in part by the Air Force Research Laboratory
(AFRL) and the Defense Threat Reduction Agency (DTRA). This material is
based upon work supported by the AFRL Mathematical Modeling and
Optimization Institute. The research was performed while the first
author held a National Research Council Research Associateship Award at
AFRL. The authors thank the anonymous referees for their valuable
comments and suggestions that helped to improve the presentation of the
paper.
NR 24
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Z9 6
U1 1
U2 34
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0377-2217
EI 1872-6860
J9 EUR J OPER RES
JI Eur. J. Oper. Res.
PD FEB 1
PY 2014
VL 232
IS 3
BP 499
EP 511
DI 10.1016/j.ejor.2013.08.008
PG 13
WC Management; Operations Research & Management Science
SC Business & Economics; Operations Research & Management Science
GA 233VY
UT WOS:000325598800008
ER
PT J
AU Ramezani, H
Kalish, S
Vitebskiy, I
Kottos, T
AF Ramezani, H.
Kalish, S.
Vitebskiy, I.
Kottos, T.
TI Unidirectional Lasing Emerging from Frozen Light in Nonreciprocal
Cavities
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID WAVE-GUIDES
AB We introduce a class of unidirectional lasing modes associated with the frozen mode regime of nonreciprocal slow-wave structures. Such asymmetric modes can only exist in cavities with broken time-reversal and space inversion symmetries. Their lasing frequency coincides with a spectral stationary inflection point of the underlying passive structure and is virtually independent of its size. These unidirectional lasers can be indispensable components of photonic integrated circuitry.
C1 [Ramezani, H.; Kalish, S.; Kottos, T.] Wesleyan Univ, Dept Phys, Middletown, CT 06459 USA.
[Vitebskiy, I.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Ramezani, H (reprint author), Wesleyan Univ, Dept Phys, Middletown, CT 06459 USA.
FU Air Force Research Laboratory (AFRL/RYD) through the AMMTIAC contract;
Alion Science and Technology; Air Force Office of Scientific Research
[LRIR 09RY04COR, FA 9550-10-1-0433]
FX This work was sponsored by the Air Force Research Laboratory (AFRL/RYD)
through the AMMTIAC contract with Alion Science and Technology, and by
the Air Force Office of Scientific Research, Grants No. LRIR 09RY04COR
and No. FA 9550-10-1-0433. Valuable comments from Dr. T. Nelson are
greatly appreciated.
NR 15
TC 7
Z9 7
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD JAN 28
PY 2014
VL 112
IS 4
AR 043904
DI 10.1103/PhysRevLett.112.043904
PG 5
WC Physics, Multidisciplinary
SC Physics
GA AB7CL
UT WOS:000331946800009
PM 24580453
ER
PT J
AU Shuman, NS
Miller, TM
Johnsen, R
Viggiano, AA
AF Shuman, Nicholas S.
Miller, Thomas M.
Johnsen, Rainer
Viggiano, Albert A.
TI Mutual neutralization of atomic rare-gas cations (Ne+, Ar+, Kr+, Xe+)
with atomic halide anions (Cl-, Br-, I-)
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID ION-ION RECOMBINATION; FLOWING-AFTERGLOW PLASMAS; TOTAL CROSS-SECTIONS;
DOUBLY-CHARGED IONS; ELECTRON-ATTACHMENT; KINETICS; SF6
AB We report thermal rate coefficients for 12 reactions of rare gas cations (Ne+, Ar+, Kr+, Xe+) with halide anions (Cl-, Br-, I-), comprising both mutual neutralization (MN) and transfer ionization. No rate coefficients have been previously reported for these reactions; however, the development of the Variable Electron and Neutral Density Attachment Mass Spectrometry technique makes it possible to measure the difference of the rate coefficients for pairs of parallel reactions in a Flowing Afterglow-Langmuir Probe apparatus. Measurements of 18 such combinations of competing reaction pairs yield an over-determined data set from which a consistent set of rate coefficients of the 12 MN reactions can be deduced. Unlike rate coefficients of MN reactions involving at least one polyatomic ion, which vary by at most a factor of similar to 3, those of the atom-atom reactions vary by at least a factor 60 depending on the species. It is found that the rate coefficients involving light rare-gas ions are larger than those for the heavier rare-gas ions, but the opposite trend is observed in the progression from Cl- to I-. The largest rate coefficient is 6.5 x 10(-8) cm(3) s(-1) for Ne+ with I-. Rate coefficients for Ar+, Kr+, and Xe+ reacting with Br-2(-) are also reported. (C) 2014 AIP Publishing LLC.
C1 [Shuman, Nicholas S.; Miller, Thomas M.; Viggiano, Albert A.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Johnsen, Rainer] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
RP Viggiano, AA (reprint author), Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
EM afrl.rvborgmailbox@kirtland.af.mil
FU FA8718-10-C-0002 [AFOSR-2303EP]; Institute for Scientific Research of
Boston College [FA8718-10-C-0002]
FX A.A.V and N.S.S. are grateful for the support of the Air Force Office of
Scientific Research for this work under Project No. AFOSR-2303EP. T. M.
M. is under Contract No. FA8718-10-C-0002 from the Institute for
Scientific Research of Boston College.
NR 26
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U1 0
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD JAN 28
PY 2014
VL 140
IS 4
AR 044304
DI 10.1063/1.4862151
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AA6MF
UT WOS:000331211700030
PM 25669520
ER
PT J
AU Wang, DH
Wie, JJ
Lee, KM
White, TJ
Tan, LS
AF Wang, David H.
Wie, Jeong Jae
Lee, Kyung Min
White, Timothy J.
Tan, Loon-Seng
TI Impact of Backbone Rigidity on the Photomechanical Response of Glassy,
Azobenzene-Functionalized Polyimides
SO MACROMOLECULES
LA English
DT Article
ID LIQUID-CRYSTAL POLYMER; AROMATIC POLYIMIDES; LIGHT; NETWORKS;
DEFORMATION; TEMPERATURE; FILMS
AB Azobenzene-functionalized polyimide materials can directly transduce light into mechanical force. Here, we examine the impact of polymer backbone rigidity on the photomechanical response in a series of linear, azobenzene-functionalized polymers. The rigidity of the backbone was varied by the polymerization of five dianhydride monomers with a newly synthesized diamine (azoBPA-diamine). The azobenzene-functionalized linear polymers exhibit glass transition temperatures (T-g) ranging from 276 to 307 degrees C and maintain excellent thermal stability. The photomechanical response of these materials was characterized by photoinduced cantilever bending as well as direct measurement of photogenerated stress upon exposure to linearly polarized, 445 nm light. Increasing the rigidity of the polymer backbone increases the magnitude of stress that is generated but decreases the angle of cantilever deflection.
C1 [Wang, David H.; Wie, Jeong Jae; Lee, Kyung Min; White, Timothy J.; Tan, Loon-Seng] US Air Force, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP White, TJ (reprint author), US Air Force, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM Timothy.White.24@us.af.mil; Loon.Tan@us.af.mil
RI White, Timothy/D-4392-2012; Tan, Loon-Seng/F-6985-2012
OI Tan, Loon-Seng/0000-0002-2134-9290
FU Materials and Manufacturing Directorate; Air Force Office of Scientific
Research
FX This work was completed at the Air Force Research Laboratory (AFRL) with
funding provided by the Materials and Manufacturing Directorate as well
as Air Force Office of Scientific Research. We are grateful to Marlene
Houtz (University of Dayton Research Institute) for TGA and DMA data.
NR 50
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U1 3
U2 73
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
EI 1520-5835
J9 MACROMOLECULES
JI Macromolecules
PD JAN 28
PY 2014
VL 47
IS 2
BP 659
EP 667
DI 10.1021/ma402178z
PG 9
WC Polymer Science
SC Polymer Science
GA 301PD
UT WOS:000330543500023
ER
PT J
AU Pochet, M
Usechak, NG
Schmidt, J
Lester, LF
AF Pochet, Michael
Usechak, Nicholas G.
Schmidt, John
Lester, Luke F.
TI Modulation response of a long-cavity, gain-levered quantum-dot
semiconductor laser
SO OPTICS EXPRESS
LA English
DT Article
ID BANDWIDTH ENHANCEMENT; INJECTION
AB The gain-lever effect enhances the modulation efficiency of a semiconductor laser when compared to modulating the entire laser. This technique is investigated in a long-cavity multi-section quantum-dot laser where the length of the modulation section is varied to achieve 14:2, 15:1 and 0:16 gain-to-modulation section ratios. In this work, the gain-levered modulation configuration resulted in an increase in modulation efficiency by as much as 16 dB. This investigation also found that the 3-dB modulation bandwidth and modulation efficiency are dependent on the modulation section length of the device, indicating the existence of an optimal gain-to-modulation section ratio. The long cavity length of the multi-section laser yielded a distinctive case where characteristics of both the gain-lever effect and spatial effects are observed in the modulation response. Here, spatial effects within the cavity dominated the small-signal modulation response close to and above the cavity's free-spectral range frequency, whereas the gain-lever effect influenced the modulation response throughout the entirety of the response. (C) 2014 Optical Society of America
C1 [Pochet, Michael; Schmidt, John] US Air Force, Dept Elect & Comp Engn, Inst Technol, Wright Patterson AFB, OH 45433 USA.
[Usechak, Nicholas G.] US Air Force, Sensors Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Lester, Luke F.] Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA.
RP Pochet, M (reprint author), US Air Force, Dept Elect & Comp Engn, Inst Technol, Wright Patterson AFB, OH 45433 USA.
EM michael.pochet@afit.edu
FU Dr. Arje Nachman through an Air Force Office of Scientific Research
grant [12RY09COR]
FX N. Usechak was supported by Dr. Arje Nachman through an Air Force Office
of Scientific Research grant (12RY09COR). The views expressed in this
article (88ABW-2013-3702) are those of the authors and do not reflect
the official policy or position of the United States Air Force,
Department of Defense, or the U. S. Government.
NR 15
TC 2
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U1 0
U2 4
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD JAN 27
PY 2014
VL 22
IS 2
BP 1726
EP 1734
DI 10.1364/OE.22.001726
PG 9
WC Optics
SC Optics
GA 302EQ
UT WOS:000330585100054
PM 24515179
ER
PT J
AU Whitworth, WC
Goodwin, DJ
Racster, L
West, KB
Chuke, SO
Daniels, LJ
Campbell, BH
Bohanon, J
Jaffar, AT
Drane, W
Sjoberg, PA
Mazurek, GH
AF Whitworth, William C.
Goodwin, Donald J.
Racster, Laura
West, Kevin B.
Chuke, Stella O.
Daniels, Laura J.
Campbell, Brandon H.
Bohanon, Jamaria
Jaffar, Atheer T.
Drane, Wanzer
Sjoberg, Paul A.
Mazurek, Gerald H.
TI Variability of the QuantiFERON (R)-TB Gold In-Tube Test Using Automated
and Manual Methods
SO PLOS ONE
LA English
DT Article
ID HEALTH-CARE WORKERS; LATENT TUBERCULOSIS INFECTION; WITHIN-SUBJECT
VARIABILITY; INTERFERON-GAMMA RESPONSES; RELEASE ASSAYS; SKIN-TEST;
REPRODUCIBILITY; CONVERSIONS; RELIABILITY; AGREEMENT
AB Background: The QuantiFERON (R)-TB Gold In-Tube test (QFT-GIT) detects Mycobacterium tuberculosis (Mtb) infection by measuring release of interferon gamma (IFN-gamma) when T-cells (in heparinized whole blood) are stimulated with specific Mtb antigens. The amount of IFN-gamma is determined by enzyme-linked immunosorbent assay (ELISA). Automation of the ELISA method may reduce variability. To assess the impact of ELISA automation, we compared QFT-GIT results and variability when ELISAs were performed manually and with automation.
Methods: Blood was collected into two sets of QFT-GIT tubes and processed at the same time. For each set, IFN-gamma was measured in automated and manual ELISAs. Variability in interpretations and IFN-gamma measurements was assessed between automated (A1 vs. A2) and manual (M1 vs. M2) ELISAs. Variability in IFN-gamma measurements was also assessed on separate groups stratified by the mean of the four ELISAs.
Results: Subjects (N = 146) had two automated and two manual ELISAs completed. Overall, interpretations were discordant for 16 (11%) subjects. Excluding one subject with indeterminate results, 7 (4.8%) subjects had discordant automated interpretations and 10 (6.9%) subjects had discordant manual interpretations (p = 0.17). Quantitative variability was not uniform; within-subject variability was greater with higher IFN-gamma measurements and with manual ELISAs. For subjects with mean TB Responses +/-0.25 IU/mL of the 0.35 IU/mL cutoff, the within-subject standard deviation for two manual tests was 0.27 (CI95 = 0.22-0.37) IU/mL vs. 0.09 (CI95 = 0.07-0.12) IU/mL for two automated tests.
Conclusion: QFT-GIT ELISA automation may reduce variability near the test cutoff. Methodological differences should be considered when interpreting and using IFN-gamma release assays (IGRAs).
C1 [Whitworth, William C.; Chuke, Stella O.; Campbell, Brandon H.; Mazurek, Gerald H.] Ctr Dis Control & Prevent, Div TB Eliminat, Atlanta, GA 30333 USA.
[Goodwin, Donald J.; Racster, Laura; Bohanon, Jamaria; Jaffar, Atheer T.] US Air Force Sch Aerosp Med, Epidemiol Serv Branch, Brooks City Base, TX USA.
[West, Kevin B.] Wilford Hall USAF Med Ctr, Dept Occupat Med TB Prevent Deployment Med, Reid Clin, Lackland AFB, TX 78236 USA.
[Chuke, Stella O.; Campbell, Brandon H.] Northrop Grumman Informat Syst Sect, Atlanta, GA USA.
[Daniels, Laura J.; Bohanon, Jamaria; Jaffar, Atheer T.] CDC Fdn, Atlanta, GA USA.
[Drane, Wanzer] Univ S Carolina, Columbia, SC 29208 USA.
[Sjoberg, Paul A.] US Air Force Sch Aerosp Med, Epidemiol Consult Serv, Dayton, OH USA.
RP Whitworth, WC (reprint author), Ctr Dis Control & Prevent, Div TB Eliminat, Atlanta, GA 30333 USA.
EM wcw2@cdc.gov
NR 39
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U1 0
U2 2
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD JAN 23
PY 2014
VL 9
IS 1
AR e86721
DI 10.1371/journal.pone.0086721
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 297XI
UT WOS:000330288000135
PM 24466211
ER
PT J
AU Xu, Y
Zhu, X
Lee, HD
Xu, C
Shubeita, SM
Ahyi, AC
Sharma, Y
Williams, JR
Lu, W
Ceesay, S
Tuttle, BR
Wan, A
Pantelides, ST
Gustafsson, T
Garfunkel, EL
Feldman, LC
AF Xu, Y.
Zhu, X.
Lee, H. D.
Xu, C.
Shubeita, S. M.
Ahyi, A. C.
Sharma, Y.
Williams, J. R.
Lu, W.
Ceesay, S.
Tuttle, B. R.
Wan, A.
Pantelides, S. T.
Gustafsson, T.
Garfunkel, E. L.
Feldman, L. C.
TI Atomic state and characterization of nitrogen at the SiC/SiO2 interface
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID RAY PHOTOELECTRON-SPECTROSCOPY; NITRIC-OXIDE; GATE OXIDES; SILICON;
NITRIDATION; MOBILITY; MOSFETS; LAYERS; SI
AB We report on the concentration, chemical bonding, and etching behavior of N at the SiC(0001)/SiO2 interface using photoemission, ion scattering, and computational modeling. For standard NO processing of a SiC MOSFET, a sub-monolayer of nitrogen is found in a thin inter-layer between the substrate and the gate oxide (SiO2). Photoemission shows one main nitrogen related core-level peak with two broad, higher energy satellites. Comparison to theory indicates that the main peak is assigned to nitrogen bound with three silicon neighbors, with second nearest neighbors including carbon, nitrogen, and oxygen atoms. Surprisingly, N remains at the surface after the oxide was completely etched by a buffered HF solution. This is in striking contrast to the behavior of Si(100) undergoing the same etching process. We conclude that N is bound directly to the substrate SiC, or incorporated within the first layers of SiC, as opposed to bonding within the oxide network. These observations provide insights into the chemistry and function of N as an interface passivating additive in SiC MOSFETs. (C) 2014 AIP Publishing LLC.
C1 [Xu, Y.; Zhu, X.; Lee, H. D.; Xu, C.; Shubeita, S. M.; Gustafsson, T.; Garfunkel, E. L.; Feldman, L. C.] Rutgers State Univ, Inst Adv Mat Devices & Nanotechnol, Piscataway, NJ 08854 USA.
[Xu, Y.; Garfunkel, E. L.] Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ 08854 USA.
[Lee, H. D.; Xu, C.; Shubeita, S. M.; Gustafsson, T.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
[Ahyi, A. C.; Sharma, Y.; Williams, J. R.] Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
[Lu, W.; Ceesay, S.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Tuttle, B. R.; Pantelides, S. T.; Feldman, L. C.] Vanderbilt Univ, Vanderbilt Inst Nanoscale Sci & Engn, Nashville, TN 37235 USA.
[Wan, A.] Evans Analyt Grp, East Windsor, NJ 08520 USA.
RP Feldman, LC (reprint author), Rutgers State Univ, Inst Adv Mat Devices & Nanotechnol, Piscataway, NJ 08854 USA.
EM l.c.feldman@rutgers.edu
FU National Science Foundation [DMR-1006740, DMR-0907385, DMR-1106070];
U.S. Army Research Laboratory [W911NF-07-2-0046]; II-VI Foundation Block
Gift Program
FX The authors would like to thank Mr. G. Liu, and Professor A. Teplyakov
for useful discussions. The authors are also grateful to Evans
Analytical Group for the SIMS work. Y. Xu and E. Garfunkel acknowledge
support of the National Science Foundation (Grant No. DMR-1006740); Y.
Xu, X. Zhu, A. C. Ahyi, Y. Sharma, J. R. Williams, L. C. Feldman, B. R.
Tuttle, and S. T. Pantelides acknowledge the National Science Foundation
(Grant No. DMR-0907385); Y. Xu, X. Zhu, L. A. C. Ahyi, Y. Sharma, J. R.
Williams, W. Lu, S. Ceesay, E. Garfunkel, and L. C. Feldman acknowledge
the support of U.S. Army Research Laboratory (Contract No.
W911NF-07-2-0046, Dr. Aivars Lelis, TPC) and the II-VI Foundation Block
Gift Program; H. D. Lee, C. Xu, and T. Gustafsson acknowledge the
support of the National Science Foundation (Grant No. DMR-1106070). The
authors acknowledge the Rutgers Laboratory of Surface Modification/LSM
for the use of the K-Alpha XPS facility.
NR 33
TC 12
Z9 12
U1 3
U2 54
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD JAN 21
PY 2014
VL 115
IS 3
AR 033502
DI 10.1063/1.4861626
PG 8
WC Physics, Applied
SC Physics
GA 302OV
UT WOS:000330615500019
ER
PT J
AU Demeritte, T
Fan, Z
Sinha, SS
Duan, JS
Pachter, R
Ray, PC
AF Demeritte, Teresa
Fan, Zhen
Sinha, Sudarson Sekhar
Duan, Jinsong
Pachter, Ruth
Ray, Paresh C.
TI Gold Nanocage Assemblies for Selective Second Harmonic Generation
Imaging of Cancer Cell
SO CHEMISTRY-A EUROPEAN JOURNAL
LA English
DT Article
DE first hyperpolarizability; imaging agents; self-assembly; SHG imaging;
theoretical modeling
ID NONLINEAR-OPTICAL PROPERTIES; THERANOSTIC APPLICATIONS;
RAYLEIGH-SCATTERING; MICROSCOPY; NANOMATERIALS; LUMINESCENCE; MODES;
SIZE
AB Second harmonic generation (SHG) imaging using near infrared laser light is the key to improving penetration depths, leading to biological understanding. Unfortunately, currently SHG imaging techniques have limited capability due to the poor signal-to-noise ratio, resulting from the low SHG efficiency of available dyes. Targeted tumor imaging over nontargeted tissues is also a challenge that needs to be overcome. Driven by this need, in this study, the development of two-photon SHG imaging of live cancer cell lines selectively by enhancement of the nonlinear optical response of gold nanocage assemblies is reported. Experimental results show that two-photon scattering intensity can be increased by few orders of magnitude by just developing nanoparticle self-assembly. Theoretical modeling indicates that the field enhancement values for the nanocage assemblies can explain, in part, the enhanced nonlinear optical properties. Our experimental data also show that A9 RNA aptamer conjugated gold nanocage assemblies can be used for targeted SHG imaging of the LNCaP prostate cancer cell line. Experimental results with the HaCaT normal skin cell lines show that bioconjugated nanocage-based assemblies demonstrate SHG imaging that is highly selective and will be able to distinguish targeted cancer cell lines from other nontargeted cell types. After optimization, this reported SHG imaging assay could have considerable application for biology.
C1 [Demeritte, Teresa; Fan, Zhen; Sinha, Sudarson Sekhar; Ray, Paresh C.] Jackson State Univ, Dept Chem & Biochem, Jackson, MS 39217 USA.
[Duan, Jinsong; Pachter, Ruth] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Ray, PC (reprint author), Jackson State Univ, Dept Chem & Biochem, Jackson, MS 39217 USA.
EM paresh.c.ray@jsums.edu
RI fan, zhen/N-5244-2014; fan, zhen/M-8774-2014;
OI fan, zhen/0000-0001-7937-8441; fan, zhen/0000-0001-7937-8441; Sinha,
Sudarson Sekhar/0000-0002-0831-2338
FU DOD-AFRL; NSF-PREM [DMR-1205194]
FX P.C.R. is grateful for a DOD-AFRL funding grant for developing NLO
materials and NSF-PREM funding grant DMR-1205194 for bio-imaging.
NR 36
TC 14
Z9 15
U1 5
U2 68
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0947-6539
EI 1521-3765
J9 CHEM-EUR J
JI Chem.-Eur. J.
PD JAN 20
PY 2014
VL 20
IS 4
BP 1017
EP 1022
DI 10.1002/chem.201303306
PG 6
WC Chemistry, Multidisciplinary
SC Chemistry
GA 287NG
UT WOS:000329548000016
PM 24339156
ER
PT J
AU Nelson, JT
McKinley, RA
Golob, EJ
Warm, JS
Parasuraman, R
AF Nelson, Jeremy T.
McKinley, R. Andy
Golob, Edward J.
Warm, Joel S.
Parasuraman, Raja
TI Enhancing vigilance in operators with prefrontal cortex transcranial
direct current stimulation (tDCS)
SO NEUROIMAGE
LA English
DT Article
DE Noninvasive brain stimulation; Transcranial direct current stimulation;
Vigilance; Enhancement; Attention; Hemodynamics
ID POSITRON-EMISSION-TOMOGRAPHY; CEREBRAL-BLOOD-FLOW; SUSTAINED ATTENTION;
MAGNETIC STIMULATION; BRAIN POLARIZATION; FRONTAL LESIONS; PERFORMANCE;
HUMANS; TASKS; MOTOR
AB Sustained attention, often referred to as vigilance in humans, is the ability to maintain goal-directed behavior for extended periods of time and respond to intermittent targets in the environment. With greater time-on-task the ability to detect targets decreases and reaction time increases a phenomenon termed the vigilance decrement. The purpose of this study was to examine the role of dorsolateral prefrontal cortex in the vigilance decrement. Subjects (n = 19) received prefrontal transcranial direct current stimulation (tDCS) at one of two different time points during a vigilance task (early or late). The impact of tDCS was examined using measures of behavior, hemispheric blood flow velocity, and regional blood oxygenation relative to sham stimulation. In the sham condition greater time-on-task was accompanied by fewer target detections and slower reaction times, indicating a vigilance decrement, and decreased blood flow velocity. tDCS significantly altered baseline task-induced physiologic and behavioral changes, dependent on the time of stimulation administration and electrode configuration (determining polarity of stimulation). Compared to the sham condition, with more time-on-task blood flow velocity decreased less and cerebral oxygenation increased more in the tDCS condition. Behavioral measures showed a significant improvement in target detection performance with tDCS compared to the sham stimulation. Signal detection analysis revealed a significant change in operator discriminability and response bias with increased time-on-task, as well as interactions between time of stimulation administration and electrode configuration. Current density modeling of tDCS showed high densities in the medial prefrontal cortex and anterior cingulate cortex. These findings confirm that cerebral hemodynamic measures provide an index of resource utilization and point to the central role of the frontal cortex in vigilance. Further, they suggest that modulation of the frontal cortices and connected structures influences the availability of vigilance resources. These findings indicate that tDCS may be well-suited to mitigate performance degradation in work settings requiring sustained attention or as a possible treatment for neurological or psychiatric disorders involving sustained attention. Published by Elsevier Inc.
C1 [Nelson, Jeremy T.; Golob, Edward J.] Tulane Univ, Neurosci Program, New Orleans, LA 70118 USA.
[Nelson, Jeremy T.] Booz Allen Hamilton, San Antonio, TX 78205 USA.
[McKinley, R. Andy; Warm, Joel S.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Parasuraman, Raja] George Mason Univ, Ctr Excellence Neuroergon Technol & Cognit CENTEC, Fairfax, VA USA.
RP McKinley, RA (reprint author), Air Force Res Lab, 2510 5th St,Bldg 840, Wright Patterson AFB, OH 45433 USA.
EM andy.mckinley@wpafb.af.mil
NR 91
TC 57
Z9 61
U1 6
U2 17
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 1053-8119
EI 1095-9572
J9 NEUROIMAGE
JI Neuroimage
PD JAN 15
PY 2014
VL 85
SI SI
BP 909
EP 917
DI 10.1016/j.neuroimage.2012.11.061
PN 3
PG 9
WC Neurosciences; Neuroimaging; Radiology, Nuclear Medicine & Medical
Imaging
SC Neurosciences & Neurology; Radiology, Nuclear Medicine & Medical Imaging
GA 278DY
UT WOS:000328870500003
PM 23235272
ER
PT J
AU Simpson, TB
Liu, JM
AlMulla, M
Usechak, NG
Kovanis, V
AF Simpson, Thomas B.
Liu, Jia-Ming
AlMulla, Mohammad
Usechak, Nicholas G.
Kovanis, Vassilios
TI Limit-Cycle Dynamics with Reduced Sensitivity to Perturbations
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID INJECTED SEMICONDUCTOR-LASER; MICROWAVE GENERATION; OPTICAL-INJECTION;
MODULATION; OSCILLATOR; SUBJECT
AB Limit-cycle oscillators are used to model a broad range of periodic nonlinear phenomena. Using the optically injected semiconductor laser as a paradigmatic example, we demonstrate that at specific operating points, the period-one oscillation frequency is simultaneously insensitive to multiple perturbation sources. In our system these include the temperature fluctuations experienced by the master and slave lasers as well as fluctuations in the bias current applied to the slave laser. Tuning of the oscillation frequency then depends only on the injected optical field amplitude. Experimental measurements are in detailed quantitative agreement with numerical modeling. These special operating points should prove valuable for developing ultra-stable nonlinear oscillators, such as a narrow-linewidth, frequency-tunable photonic microwave oscillator.
C1 [Simpson, Thomas B.] L 3 Appl Technol Inc, San Diego, CA 92121 USA.
[Liu, Jia-Ming; AlMulla, Mohammad] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90024 USA.
[Usechak, Nicholas G.; Kovanis, Vassilios] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Simpson, TB (reprint author), L 3 Appl Technol Inc, 10770 Wateridge Circle, San Diego, CA 92121 USA.
EM thomas.simpson@L-3com.com
FU Air Force Research Laboratory through Optimetrics, Inc.; Air Force
Office of Scientific Research [12RY09COR]
FX The authors thank Professor Thomas Erneux for a careful reading of an
earlier version of this manuscript and for useful suggestions. The work
of T. B. S. and J.-M. L. was supported, in part, by the Air Force
Research Laboratory through a contract with Optimetrics, Inc. The work
of N. G. U. and V. K. was supported by Dr. Arje Nachman through an Air
Force Office of Scientific Research Grant (No. 12RY09COR). The views and
opinions expressed in this Letter (88ABW-2013-2676) are those of the
authors and do not reflect the official policy or position of the United
States Air Force, Department of Defense or the U.S. Government.
NR 13
TC 15
Z9 15
U1 1
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD JAN 14
PY 2014
VL 112
IS 2
AR 023901
DI 10.1103/PhysRevLett.112.023901
PG 5
WC Physics, Multidisciplinary
SC Physics
GA AB7AD
UT WOS:000331940800007
PM 24484013
ER
PT J
AU Fernandes, NJ
Wallin, TJ
Vaia, RA
Koerner, H
Giannelis, EP
AF Fernandes, Nikhil J.
Wallin, Thomas J.
Vaia, Richard A.
Koerner, Hilmar
Giannelis, Emmanuel P.
TI Nanoscale Ionic Materials
SO CHEMISTRY OF MATERIALS
LA English
DT Article
DE nanoparticle composites; hairy nanoparticles; nanoscale ionic materials;
nanoparticle ionic liquids; nanohybrids
ID ORGANIC HYBRID MATERIALS; LIQUID-LIKE BEHAVIOR; POLYMER-GRAFTED
NANOPARTICLES; SURFACE-FUNCTIONALIZED NANOPARTICLES; THIN-FILM
COMPOSITE; CARBON NANOTUBES; CO2 CAPTURE; QUANTUM DOTS; SILICA
NANOPARTICLES; HAIRY NANOPARTICLES
AB Within the general field of polymer grafted or "hairy" nanoparticles, nanoscale ionic materials (NIMs), consisting of a soft polymeric canopy bound to a well-defined nanoparticle core by an ionic bond, occupy a growing niche. They are the first example of neat, self-suspended fluids of nanoparticles (i.e., in the absence of a suspending medium). As such, the perennial dispersion challenges associated with polymer nanocomposites are minimized while the dynamic nature of the ionic bonds provides opportunities for self-healing behavior. Combining the properties of ionic liquids, charged colloid suspensions, and well-dispersed nanocomposites, this new materials platform offers remarkable versatility for current and future applications. This perspective covers techniques and current challenges in synthesis, discusses the state of understanding of the theory behind their structure and properties, and examines successes and future prospects in application in a number of areas, notably in energy-related technologies.
C1 [Fernandes, Nikhil J.] Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA.
[Wallin, Thomas J.; Giannelis, Emmanuel P.] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA.
[Vaia, Richard A.; Koerner, Hilmar] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Giannelis, EP (reprint author), Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA.
EM epg2@cornell.edu
OI Fernandes, Nikhil/0000-0002-0195-2885
FU King Abdullah University of Science and Technology (KAUST)
[KUS-C1-018-02]; Materials and Manufacturing Directorate of the Air
Force Research Laboratory; Air Force Office of Scientific Research
FX This publication is based on work supported in part by Award No.
KUS-C1-018-02, made by King Abdullah University of Science and
Technology (KAUST). This work was funded in part by the Materials and
Manufacturing Directorate of the Air Force Research Laboratory and the
Air Force Office of Scientific Research. The authors wish to thank Shane
Juhl for assistance in preparing Figure 11.
NR 126
TC 18
Z9 19
U1 13
U2 194
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
EI 1520-5002
J9 CHEM MATER
JI Chem. Mat.
PD JAN 14
PY 2014
VL 26
IS 1
SI SI
BP 84
EP 96
DI 10.1021/cm402372q
PG 13
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 299SV
UT WOS:000330416900009
ER
PT J
AU Stauffer, HU
Miller, JD
Slipchenko, MN
Meyer, TR
Prince, BD
Roy, S
Gord, JR
AF Stauffer, Hans U.
Miller, Joseph D.
Slipchenko, Mikhail N.
Meyer, Terrence R.
Prince, Benjamin D.
Roy, Sukesh
Gord, James R.
TI Time-and frequency-dependent model of time-resolved coherent anti-Stokes
Raman scattering (CARS) with a picosecond-duration probe pulse
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID GAS-PHASE THERMOMETRY; NONRESONANT BACKGROUND SUPPRESSION; IMPULSIVE
STIMULATED RAMAN; SINGLE-SHOT THERMOMETRY; FEMTOSECOND-CARS;
EXCITED-STATE; TEMPERATURE-MEASUREMENTS; VIBRATIONAL-MODES;
POPULATION-DYNAMICS; Q-BRANCH
AB The hybrid femtosecond/picosecond coherent anti-Stokes Raman scattering (fs/ps CARS) technique presents a promising alternative to either fs time-resolved or ps frequency-resolved CARS in both gas-phase thermometry and condensed-phase excited-state dynamics applications. A theoretical description of time-dependent CARS is used to examine this recently developed probe technique, and quantitative comparisons of the full time-frequency evolution show excellent accuracy in predicting the experimental vibrational CARS spectra obtained for two model systems. The interrelated time-and frequency-domain spectral signatures of gas-phase species produced by hybrid fs/ps CARS are explored with a focus on gas-phase N-2 vibrational CARS, which is commonly used as a thermometric diagnostic of combusting flows. In particular, we discuss the merits of the simple top-hat spectral filter typically used to generate the ps-duration hybrid fs/ps CARS probe pulse, including strong discrimination against non-resonant background that often contaminates CARS signal. It is further demonstrated, via comparison with vibrational CARS results on a time-evolving solvated organic chromophore, that this top-hat probe-pulse configuration can provide improved spectral resolution, although the degree of improvement depends on the dephasing timescales of the observed molecular modes and the duration and timing of the narrowband final pulse. Additionally, we discuss the virtues of a frequency-domain Lorentzian probe-pulse lineshape and its potential for improving the hybrid fs/ps CARS technique as a diagnostic in high-pressure gas-phase thermometry applications. (C) 2014 AIP Publishing LLC.
C1 [Stauffer, Hans U.; Slipchenko, Mikhail N.; Roy, Sukesh] Spectral Energies LLC, Dayton, OH 45431 USA.
[Miller, Joseph D.; Gord, James R.] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
[Miller, Joseph D.; Meyer, Terrence R.] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA.
[Prince, Benjamin D.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Stauffer, HU (reprint author), Spectral Energies LLC, 5100 Springfield St,Suite 301, Dayton, OH 45431 USA.
EM hans.stauffer@gmail.com
FU Air Force Research Laboratory [FA8650-12-C- 2200]; United States Air
Force Office of Scientific Research (AFOSR); National Science Foundation
Early Career program [CBET-1056006]; National Science Foundation
Graduate Research Fellowship Program; Department of Defense National
Defense Science and Engineering Graduate Fellowship Program; National
Research Council Postdoctoral Research Associateship
FX Funding for this research was provided, in part, by the Air Force
Research Laboratory under Contract No. FA8650-12-C-2200, the United
States Air Force Office of Scientific Research (AFOSR) (Dr. Enrique
Parra and Dr. Chiping Li, Program Managers), and the National Science
Foundation Early Career program under Contract No. CBET-1056006. J.
Miller was funded by the National Science Foundation Graduate Research
Fellowship Program, the Department of Defense National Defense Science
and Engineering Graduate Fellowship Program, and by a National Research
Council Postdoctoral Research Associateship. This work has been cleared
for public release (No. 88ABW-2013-3992).
NR 83
TC 17
Z9 17
U1 4
U2 45
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD JAN 14
PY 2014
VL 140
IS 2
AR 024316
DI 10.1063/1.4860475
PG 16
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 292TL
UT WOS:000329925200029
PM 24437886
ER
PT J
AU Nan, TX
Zhou, ZY
Liu, M
Yang, X
Gao, Y
Assaf, BA
Lin, H
Velu, S
Wang, XJ
Luo, HS
Chen, J
Akhtar, S
Hu, E
Rajiv, R
Krishnan, K
Sreedhar, S
Heiman, D
Howe, BM
Brown, GJ
Sun, NX
AF Nan, Tianxiang
Zhou, Ziyao
Liu, Ming
Yang, Xi
Gao, Yuan
Assaf, Badih A.
Lin, Hwaider
Velu, Siddharth
Wang, Xinjun
Luo, Haosu
Chen, Jimmy
Akhtar, Saad
Hu, Edward
Rajiv, Rohit
Krishnan, Kavin
Sreedhar, Shalini
Heiman, Don
Howe, Brandon M.
Brown, Gail J.
Sun, Nian X.
TI Quantification of strain and charge co-mediated magnetoelectric coupling
on ultra-thin Permalloy/PMN-PT interface
SO SCIENTIFIC REPORTS
LA English
DT Article
ID ATOMIC LAYERS; COMPOSITES; HETEROSTRUCTURES; MAGNETISM
AB Strain and charge co-mediated magnetoelectric coupling are expected in ultra-thin ferromagnetic/ferroelectric multiferroic heterostructures, which could lead to significantly enhanced magnetoelectric coupling. It is however challenging to observe the combined strain charge mediated magnetoelectric coupling, and difficult in quantitatively distinguish these two magnetoelectric coupling mechanisms. We demonstrated in this work, the quantification of the coexistence of strain and surface charge mediated magnetoelectric coupling on ultra-thin Ni0.79Fe0.21/PMN-PT interface by using a Ni0.79Fe0.21/Cu/PMN-PT heterostructure with only strain-mediated magnetoelectric coupling as a control. The NiFe/PMN-PT heterostructure exhibited a high voltage induced effective magnetic field change of 375 Oe enhanced by the surface charge at the PMN-PT interface. Without the enhancement of the charge-mediated magnetoelectric effect by inserting a Cu layer at the PMN-PT interface, the electric field modification of effective magnetic field was 202 Oe. By distinguishing the magnetoelectric coupling mechanisms, a pure surface charge modification of magnetism shows a strong correlation to polarization of PMN-PT. A non-volatile effective magnetic field change of 104 Oe was observed at zero electric field originates from the different remnant polarization state of PMN-PT. The strain and charge co-mediated magnetoelectric coupling in ultra-thin magnetic/ferroelectric heterostructures could lead to power efficient and non-volatile magnetoelectric devices with enhanced magnetoelectric coupling.
C1 [Nan, Tianxiang; Zhou, Ziyao; Yang, Xi; Gao, Yuan; Lin, Hwaider; Velu, Siddharth; Wang, Xinjun; Sun, Nian X.] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
[Liu, Ming; Howe, Brandon M.; Brown, Gail J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH USA.
[Assaf, Badih A.; Heiman, Don] Northeastern Univ, Dept Phys, Boston, MA 02115 USA.
[Luo, Haosu] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China.
[Chen, Jimmy] Winchester High Sch, Winchester, MA USA.
[Akhtar, Saad] Foxborough High Sch, Foxboro, MA USA.
[Hu, Edward] Boston Latin Sch, Boston, MA USA.
[Rajiv, Rohit] Phillips Exeter Acad, Exeter, NH USA.
[Krishnan, Kavin] Adv Math & Sci Acad Charter Sch, Marlborough, MA USA.
[Sreedhar, Shalini] Weston High Sch, Weston, MA USA.
RP Sun, NX (reprint author), Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA.
EM n.sun@neu.edu
RI Zhou, Ziyao/N-8398-2015; Nan, Tianxiang/O-3820-2015; Nan,
Tianxiang/A-8020-2016; Gao, Yuan/E-4277-2016; Yang, Xi/E-6042-2016; Sun,
Nian Xiang/F-9590-2010; Liu, Ming/B-4143-2009
OI Zhou, Ziyao/0000-0002-2389-1673; Gao, Yuan/0000-0002-2444-1180; Sun,
Nian Xiang/0000-0002-3120-0094; Liu, Ming/0000-0002-6310-948X
FU AFRL through UES [S-875-060-018]; Semiconductor Research Corporation;
National Natural Science Foundation of China (NSFC) [51328203,
51132001]; [NSF-DMR-0907007]
FX This work is financially supported by AFRL through UES Subcontract No.
S-875-060-018, Semiconductor Research Corporation, and National Natural
Science Foundation of China (NSFC) 51328203 and 51132001. BAA and DH are
supported by NSF-DMR-0907007. The authors thank the contribution of Ms.
Liangchuan Sun on 3D schematics.
NR 36
TC 63
Z9 63
U1 23
U2 152
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD JAN 14
PY 2014
VL 4
AR 3688
DI 10.1038/srep03688
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 291RH
UT WOS:000329846300001
PM 24418911
ER
PT J
AU Chen, T
Peng, HS
Durstock, M
Dai, LM
AF Chen, Tao
Peng, Huisheng
Durstock, Michael
Dai, Liming
TI High-performance transparent and stretchable all-solid supercapacitors
based on highly aligned carbon nanotube sheets
SO SCIENTIFIC REPORTS
LA English
DT Article
ID FILMS; ELECTRODES; CONDUCTORS; ARCHITECTURE; CAPACITORS; BATTERIES
AB By using highly aligned carbon nanotube (CNT) sheets of excellent optical transmittance and mechanical stretchability as both the current collector and active electrode, high-performance transparent and stretchable all-solid supercapacitors with a good stability were developed. A transmittance up to 75% at the wavelength of 550 nm was achieved for a supercapacitor made from a cross-over assembly of two single-layer CNT sheets. The transparent supercapacitor has a specific capacitance of 7.3 F g(-1) and can be biaxially stretched up to 30% strain without any obvious change in electrochemical performance even over hundreds stretching cycles.
C1 [Chen, Tao; Dai, Liming] Case Western Reserve Univ, Ctr Adv Sci & Engn Carbon Case4Carbon, Dept Macromol Sci & Engn, Cleveland, OH 44106 USA.
[Peng, Huisheng] Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China.
[Peng, Huisheng] Fudan Univ, Adv Mat Lab, Shanghai 200438, Peoples R China.
[Durstock, Michael] RXBP, Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Dai, LM (reprint author), Case Western Reserve Univ, Ctr Adv Sci & Engn Carbon Case4Carbon, Dept Macromol Sci & Engn, 10900 Euclid Ave, Cleveland, OH 44106 USA.
EM liming.dai@case.edu
RI Peng, Huisheng/G-8867-2011
FU AFOSR [FA9550-12-1-0069]
FX The authors are very grateful for the financial support from AFOSR
(FA9550-12-1-0069).
NR 38
TC 74
Z9 74
U1 24
U2 247
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD JAN 9
PY 2014
VL 4
AR 3612
DI 10.1038/srep03612
PG 7
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 291PD
UT WOS:000329839900006
PM 24402400
ER
PT J
AU Akers, BF
Ambrose, DM
Wright, JD
AF Akers, Benjamin F.
Ambrose, David M.
Wright, J. Douglas
TI Gravity perturbed Crapper waves
SO PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING
SCIENCES
LA English
DT Article
DE water waves; gravity; surface tension
ID CAPILLARY SOLITARY WAVES; CRESTED WATER-WAVES; SURFACE-TENSION;
DEEP-WATER; VORTEX SHEETS; INTERFACIAL WAVES; TRAVELING-WAVES;
LARGE-AMPLITUDE; WILTON RIPPLES; INFINITE DEPTH
AB Crapper waves are a family of exact periodic travelling wave solutions of the free-surface irrotational incompressible Euler equations; these are pure capillary waves, meaning that surface tension is accounted for, but gravity is neglected. For certain parameter values, Crapper waves are known to have multi-valued height. Using the implicit function theorem, we prove that any of the Crapper waves can be perturbed by the effect of gravity, yielding the existence of gravity-capillary waves nearby to the Crapper waves. This result implies the existence of travelling gravity-capillary waves with multi-valued height. The solutions we prove to exist include waves with both positive and negative values of the gravity coefficient. We also compute these gravity perturbed Crapper waves by means of a quasi-Newton iterative scheme (again, using both positive and negative values of the gravity coefficient). A phase diagram is generated, which depicts the existence of single-valued and multi-valued travelling waves in the gravity-amplitude plane. A new largest water wave is computed, which is composed of a string of bubbles at the interface.
C1 [Akers, Benjamin F.] US Air Force, Inst Technol, Dept Math & Stat, Dayton, OH USA.
[Ambrose, David M.; Wright, J. Douglas] Drexel Univ, Dept Math, Philadelphia, PA 19104 USA.
RP Ambrose, DM (reprint author), Drexel Univ, Dept Math, 3141 Chestnut St, Philadelphia, PA 19104 USA.
EM ambrose@math.drexel.edu
RI Ambrose, David/D-5396-2013
OI Ambrose, David/0000-0003-4753-0319
FU National Science Foundation [DMS-1008387, DMS-1016267, DMS-0908299,
DMS-1105635]
FX D. M. A. gratefully acknowledges support from the National Science
Foundation through grant nos DMS-1008387 and DMS-1016267. J.D.W.
gratefully acknowledges support from the National Science Foundation
through grant nos DMS-0908299 and DMS-1105635.
NR 50
TC 1
Z9 1
U1 0
U2 4
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-5021
EI 1471-2946
J9 P ROY SOC A-MATH PHY
JI Proc. R. Soc. A-Math. Phys. Eng. Sci.
PD JAN 8
PY 2014
VL 470
IS 2161
AR 20130526
DI 10.1098/rspa.2013.0526
PG 14
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AC3CO
UT WOS:000332392800010
ER
PT J
AU Zahran, EM
Bedford, NM
Nguyen, MA
Chang, YJ
Guiton, BS
Naik, RR
Bachas, LG
Knecht, MR
AF Zahran, Elsayed M.
Bedford, Nicholas M.
Nguyen, Michelle A.
Chang, Yao-Jen
Guiton, Beth S.
Naik, Rajesh R.
Bachas, Leonidas G.
Knecht, Marc R.
TI Light-Activated Tandem Catalysis Driven by Multicomponent Nanomaterials
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID PD/FE BIMETALLIC NANOTUBES; PHOTOCATALYTIC ACTIVITY; TITANIUM-DIOXIDE;
VISIBLE-LIGHT; WATER; MECHANISM; HYDROGEN; DECHLORINATION; DEGRADATION;
TEMPERATURE
AB Transitioning energy-intensive and environmentally intensive processes toward sustainable conditions is necessary in light of the current global condition. To this end, photocatalytic processes represent new approaches for H-2 generation; however, their application toward tandem catalytic reactivity remains challenging. Here, we demonstrate that metal oxide materials decorated with noble metal nanoparticles advance visible light photocatalytic activity toward new reactions not typically driven by light. For this, Pd nanoparticles were deposited onto Cu2O cubes to generate a composite structure. Once characterized, their hydrodehalogenation activity was studied via the reductive dechlorination of polychlorinated biphenyls. To this end, tandem catalytic reactivity was observed with H-2 generation via H2O reduction at the Cu2O surface, followed by dehalogenation at the Pd using the in situ generated H-2. Such results present methods to achieve sustainable catalytic technologies by advancing photocatalytic approaches toward new reaction systems.
C1 [Zahran, Elsayed M.; Bedford, Nicholas M.; Nguyen, Michelle A.; Bachas, Leonidas G.; Knecht, Marc R.] Univ Miami, Dept Chem, Coral Gables, FL 33146 USA.
[Bedford, Nicholas M.; Naik, Rajesh R.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Chang, Yao-Jen; Guiton, Beth S.] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA.
[Guiton, Beth S.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Bachas, LG (reprint author), Univ Miami, Dept Chem, Coral Gables, FL 33146 USA.
EM bachas@miami.edu; knecht@miami.edu
RI Bachas, Leonidas/G-2479-2015; Chang, Yao-Jen/E-6766-2017;
OI Bachas, Leonidas/0000-0002-3308-6264; Zahran,
Elsayed/0000-0003-3456-515X
FU University of Miami; Air Force Office of Scientific Research; Office of
Basic Sciences, Materials Sciences and Engineering Division, U.S.
Department of Energy; NASA Kentucky EPSCoR; National Research Council
FX This work was supported by University of Miami (L.G.B. and M.R.K.), the
Air Force Office of Scientific Research (R.R.N.), the Office of Basic
Sciences, Materials Sciences and Engineering Division, U.S. Department
of Energy (B.S.G), and the NASA Kentucky EPSCoR Program (Y.-J.C. and
B.S.G.). E.M.Z. acknowledges the National Research Center, Egypt, for
granting an academic leave, N.M.B acknowledges fellowship support from
the National Research Council Research Associateship award, and M.A.N.
acknowledges a fellowship from the Science Made Sensible program at
University of Miami.
NR 26
TC 21
Z9 21
U1 11
U2 141
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD JAN 8
PY 2014
VL 136
IS 1
BP 32
EP 35
DI 10.1021/ja410465s
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 288BI
UT WOS:000329586600009
PM 24397770
ER
PT J
AU Look, DC
Leedy, KD
Thomson, DB
Wang, B
AF Look, D. C.
Leedy, K. D.
Thomson, D. B.
Wang, B.
TI Defects in highly conductive ZnO for transparent electrodes and
plasmonics
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID FILMS
AB The effects of point and extended defects on concentration n and mobility l are studied in thin films of Ga-doped ZnO (GZO) grown by pulsed laser deposition on quartz or ZnO itself. The most important defects in the bulk are point defects, mainly Zn vacancies, and their concentrations are similar in GZO/quartz and in GZO/ZnO. On the other hand, the dominant defects at the interface are extended defects, and their concentrations are much higher in GZO/quartz than in GZO/ZnO. Consequently, the mobility in GZO/quartz is lower and more thickness-dependent than that in GZO/ZnO. The effects of point and extended defects can be mitigated by annealing on Zn foil, and by use of buffer layers, respectively. (C) 2014 AIP Publishing LLC.
C1 [Look, D. C.] Wright State Univ, Semicond Res Ctr, Dayton, OH 45435 USA.
[Look, D. C.] Wyle Labs Inc, Dayton, OH 45431 USA.
[Look, D. C.; Leedy, K. D.; Thomson, D. B.] US Air Force, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
[Wang, B.] Solid State Sci Corp, Hollis, NH 03049 USA.
RP Look, DC (reprint author), Wright State Univ, Semicond Res Ctr, Dayton, OH 45435 USA.
EM david.look@wright.edu
FU DOE [DE-FG02-07ER46389]; AFOSR [FA9550-10-1-0079]; NSF [DMR-080-3276];
AFRL [HC1047-05-D-4005]
FX We wish to thank T. A. Cooper, W. Rice, and D. McFarland for technical
assistance and B. Claflin for helpful discussions. Support of D. C. L.
is gratefully acknowledged from the following sources: DOE Grant
DE-FG02-07ER46389 (R. Kortan), AFOSR Grant FA9550-10-1-0079 (J. Hwang),
NSF Grant DMR-080-3276 (C. Ying), and AFRL Contract HC1047-05-D-4005 (D.
Tomich).
NR 19
TC 8
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U1 3
U2 43
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD JAN 7
PY 2014
VL 115
IS 1
AR 012002
DI 10.1063/1.4837956
PG 4
WC Physics, Applied
SC Physics
GA 286GZ
UT WOS:000329456300002
ER
PT J
AU Steenbergen, EH
Elhamri, S
Mitchel, WC
Mou, S
Brown, GJ
AF Steenbergen, E. H.
Elhamri, S.
Mitchel, W. C.
Mou, Shin
Brown, G. J.
TI Carrier transport properties of Be-doped InAs/InAsSb type-II infrared
superlattices
SO APPLIED PHYSICS LETTERS
LA English
DT Article
AB The InAs/InAsSb type-II superlattice materials studied to date for infrared detector applications have been residually n-type, but p-type absorber regions with minority carrier electrons can result in increased photodiode quantum efficiency, R(o)A, and detectivity. Therefore, Be-doped InAs/InAsSb superlattices were investigated to determine the p-type InAs/InAsSb superlattice material transport properties essential to developing high quality photodiode absorber materials. Hall measurements performed at 10K revealed that the superlattice converted to p-type with Be-doping of 3 x 10(16) cm(-3) and the hole mobility reached 24 400 cm(2)/Vs. Photoresponse measurements at 10K confirmed the 175 meV bandgap and material optical quality. (C) 2014 AIP Publishing LLC.
C1 [Steenbergen, E. H.; Mitchel, W. C.; Mou, Shin; Brown, G. J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Elhamri, S.] Univ Dayton, Dept Phys, Dayton, OH 45469 USA.
RP Steenbergen, EH (reprint author), Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
EM Elizabeth.Steenbergen.1@us.af.mil
NR 18
TC 3
Z9 3
U1 3
U2 49
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD JAN 6
PY 2014
VL 104
IS 1
AR 011104
DI 10.1063/1.4861159
PG 3
WC Physics, Applied
SC Physics
GA 291OT
UT WOS:000329838800004
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Electromagnetic Fields and Origin of Light
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 11
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 1
EP 28
PG 28
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900002
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Light Propagation in Linear Optical Media Preface
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Editorial Material; Book Chapter
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP XIII
EP XV
PG 3
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900001
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Electromagnetic Waves in Linear Media
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 29
EP 52
PG 24
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900003
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Light Propagation in Anisotropic Crystals
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 9
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 53
EP 111
PG 59
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900004
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Wave Propagation across the Interface of Two Homogeneous Media
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 113
EP 122
PG 10
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900005
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Light Propagation in a Dielectric Waveguide
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 6
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 123
EP 139
PG 17
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900006
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Paraxial Propagation of Gaussian Beams
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
ID ANGULAR-MOMENTUM; LIGHT; TRANSFORMATION; MODES
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 18
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 141
EP 176
PG 36
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900007
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Scalar and Vector Diffraction Theories
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
ID NONPARAXIAL PROPAGATION; ELECTROMAGNETIC-WAVES; CIRCULAR APERTURE;
GAUSSIAN BEAMS; PULSES
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 28
TC 1
Z9 1
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 177
EP 207
PG 31
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900008
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Calculations for Plane Waves Incident upon Various Apertures
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
ID ELECTROMAGNETIC-WAVES; DIFFRACTION
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 6
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 209
EP 234
PG 26
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900009
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Vector Diffraction across a Curved Interface
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
ID ELECTROMAGNETIC-WAVES; PROPAGATION; LIGHT
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 16
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 235
EP 271
PG 37
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900010
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Diffraction of Gaussian Beams
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
ID PROPAGATION; APERTURE
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 11
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 273
EP 304
PG 32
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900011
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Trapping Cold Atoms with Laser Light
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
ID OPTICAL LATTICES; NEUTRAL ATOMS; CESIUM ATOMS; NEAR-FIELD; DIFFRACTION;
PROPAGATION; RADIATION; APERTURE; TRAPS; BEAM
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 29
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 305
EP 346
PG 42
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900012
ER
PT B
AU Gillen, GD
Gillen, K
Guha, S
AF Gillen, Glen D.
Gillen, Katharina
Guha, Shekhar
BA Gillen, GD
Gillen, K
Guha, S
BF Gillen, GD
Gillen, K
Guha, S
TI Complex Phase Notation, Engineer's vs. Physicist's
SO LIGHT PROPAGATION IN LINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Gillen, Glen D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
[Gillen, Katharina] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA.
[Guha, Shekhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Gillen, GD (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
NR 15
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-1095-8; 978-1-4822-1094-1
PY 2014
BP 347
EP 353
PG 7
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD8LD
UT WOS:000364018900013
ER
PT J
AU Erickson, CJ
Burke, JH
AF Erickson, Christopher J.
Burke, John H.
GP Inst Navigat
TI Progress Towards Building Optical Clocks for Land and Space at AFRL
SO PROCEEDINGS OF THE 46TH ANNUAL PRECISE TIME AND TIME INTERVAL SYSTEMS
AND APPLICATIONS MEETING
LA English
DT Proceedings Paper
CT 46th Annual Precise Time and Time Interval Systems and Applications
Meeting
CY DEC 01-04, 2014
CL Boston,, MA
AB The Air Force Research Laboratory's position, timing, and navigation program is building the capability to develop and test optical frequency atomic clocks suitable for many terrestrial and space based applications. We report on our efforts to develop a two-photon Rb optical clock at 778 nm. The standard is relatively simple in design and construction and can take advantage of narrow linewidth, stable, commercially available telecom lasers. Manufacturability has been a focus and these clocks are expected to meet GPS-III frequency stability requirements with good size, weight, and power.
C1 [Erickson, Christopher J.; Burke, John H.] AFRL, Space Vehicles Directorate, Wright Patterson AFB, OH USA.
RP Erickson, CJ (reprint author), AFRL, Space Vehicles Directorate, Wright Patterson AFB, OH USA.
NR 8
TC 1
Z9 1
U1 0
U2 0
PU INST NAVIGATION
PI WASHINGTON
PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 USA
PY 2014
BP 149
EP 153
PG 5
WC Physics, Applied; Telecommunications
SC Physics; Telecommunications
GA BD9OW
UT WOS:000365041500024
ER
PT J
AU Jia, B
Pham, KD
Blasch, E
Shen, D
Wang, ZH
Chen, GS
AF Jia, Bin
Pham, Khanh D.
Blasch, Erik
Shen, Dan
Wang, Zhonghai
Chen, Genshe
GP IEEE
TI Cooperative Space Object Tracking using Consensus-based Filters
SO 2014 17TH INTERNATIONAL CONFERENCE ON INFORMATION FUSION (FUSION)
LA English
DT Proceedings Paper
CT 17th International Conference on Information Fusion (FUSION)
CY JUL 07-10, 2014
CL Salamanca, SPAIN
SP ISIF, VNiVERSiDAD Salamanca, Univ Carlos Madrid, IBM, IEEE, Indra
ID FUSION; TARGET
AB Cooperative tracking plays a key role in space situation awareness (SSA) in which there are a limited number of observations and poor tracking performance from a single sensor. To utilize the information from multiple networked sensors, both centralized and decentralized fusion algorithms can be used. Compared with centralized fusion algorithms, decentralized fusion algorithms are more robust in terms of communication failure and computational burden. One popular distributed estimation approach is based on the average consensus which asymptotically converges to the optimal estimate by multiple iterations of neighborhood information. Consensus-based algorithms have become popular in recent years due to the fact that they do not require the global knowledge of the network or the routing protocols. In this paper, we utilize the information weighted consensus filter (ICF) to track space objects using multiple space-based optical (SBO) sensors. A scenario which contains a space object and four SBOs is used to test the ICF. To improve the performance of ICF, the cubature rule embedded ICF (Cub-ICF) is proposed and compared with the ICF. We also compare the ICF with the centralized extended information filter (CEIF). The results indicate that the proposed Cub-ICF is more robust than the ICF and the consensus based decentralized filters can achieve close performance to the centralized filters. Consensus based filters facilitate cooperative space tracking leading to robustness amongst sensor failures, reduction in computations, and elimination of complex network protocols.
C1 [Jia, Bin; Shen, Dan; Wang, Zhonghai; Chen, Genshe] Intelligent Fus Technol Inc, Germantown, MD 20876 USA.
[Pham, Khanh D.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Blasch, Erik] Air Force Res Lab, Informat Directorate, Rome, NY 13441 USA.
RP Jia, B (reprint author), Intelligent Fus Technol Inc, 20271 Goldenrod Lane,Suite 2066, Germantown, MD 20876 USA.
EM bin.jia@intfusiontech.com; khanh.pham.1@us.af.mil;
erik.blasch.1@us.af.mil; dshen@intfusiontech.com;
zwang@intfusiontech.com; gchen@intfusiontech.com
NR 28
TC 0
Z9 0
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
PY 2014
PG 8
WC Computer Science, Information Systems; Computer Science,
Interdisciplinary Applications; Computer Science, Theory & Methods
SC Computer Science
GA BD8FB
UT WOS:000363896100137
ER
PT J
AU Linares, R
Crassidis, JL
Jah, MK
AF Linares, Richard
Crassidis, John L.
Jah, Moriba K.
GP IEEE
TI Space Object Classification and Characterization Via Multiple Model
Adaptive Estimation
SO 2014 17TH INTERNATIONAL CONFERENCE ON INFORMATION FUSION (FUSION)
LA English
DT Proceedings Paper
CT 17th International Conference on Information Fusion (FUSION)
CY JUL 07-10, 2014
CL Salamanca, SPAIN
SP ISIF, VNiVERSiDAD Salamanca, Univ Carlos Madrid, IBM, IEEE, Indra
AB In recent years there has been an increase in the number of inactive and debris objects in space. The characterization of the uncertainty in the knowledge of these Space Objects (SOs) is very important in developing an understanding of the space debris fields and any present or future threat they may pose. This work examines classification based on Multiple Model Adaptive Estimation (MMAE) to extract SO characteristics from observations while estimating the probability the observations belong to a given class of objects. Recovering these characteristics and trajectories with sufficient accuracy is shown in this paper, where the characteristics are inherent in unique SO models used in the MMAE filter bank. A number of scenarios are shown to highlight the effectiveness of the proposed classification approach. The performance of this strategy is demonstrated via simulated scenarios.
C1 [Linares, Richard] Los Alamos Natl Lab, ISR 1, Space Sci & Applicat, Los Alamos, NM 87545 USA.
[Crassidis, John L.] SUNY Buffalo, Dept Mech & Aero Eng, Space Situat Awareness, Amherst, NY 14260 USA.
[Jah, Moriba K.] Kirtland Air Force Base, US Air Force Res Lab, Space Situat Awareness, Albuquerque, NM 87117 USA.
RP Linares, R (reprint author), Los Alamos Natl Lab, ISR 1, Space Sci & Applicat, Los Alamos, NM 87545 USA.
EM linares@lanl.gov; johnc@buffalo.edu
NR 15
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
PY 2014
PG 7
WC Computer Science, Information Systems; Computer Science,
Interdisciplinary Applications; Computer Science, Theory & Methods
SC Computer Science
GA BD8FB
UT WOS:000363896100314
ER
PT J
AU Steinberg, AN
Bowman, CL
Haith, G
Blasch, E
Morefield, C
Morefield, M
AF Steinberg, Alan N.
Bowman, Christopher L.
Haith, Gary
Blasch, Erik
Morefield, Charles
Morefield, Michael
GP IEEE
TI Adaptive Context Assessment and Context Management
SO 2014 17TH INTERNATIONAL CONFERENCE ON INFORMATION FUSION (FUSION)
LA English
DT Proceedings Paper
CT 17th International Conference on Information Fusion (FUSION)
CY JUL 07-10, 2014
CL Salamanca, SPAIN
SP ISIF, VNiVERSiDAD Salamanca, Univ Carlos Madrid, IBM, IEEE, Indra
DE context conformity assessment and management; adaptive information
exploitation; Joint Directors of Laboratories' (JDL) data fusion model;
machine learning; context relevance; situation assessment; model
management; model-based classification
AB Adaptive context assessment and context management (CACM) methods opportunistically exploit non-traditional data sources to improve the robustness of information fusion systems. Adaptive CACM methods find relevant data in external data sources and create and refine predictive situational models based on the relevance, quality, and means of employing such data. These CACM methods also measure the conformity of this non-traditional data with Level 1-4 fusion system products. The method proposed here is developed as an extension to the Data Fusion and Resource Management (DF&RM) Dual Node Network (DNN) technical architecture by incorporating the CACM into the DNN fusion Level 4. Techniques are described that automatically learn to characterize and search non-traditional contextual data to enable fusion or comparison of data with organic data fusion systems products and ontologies. Non-traditional data can improve the quantity, quality, availability, timeliness, and diversity of the baseline fusion system sources and therefore can improve prediction, estimation accuracy and robustness at all levels of fusion.
C1 [Bowman, Christopher L.; Haith, Gary] Data Fus & Neural Networks LLC, Broomfield, CO USA.
[Blasch, Erik] US Air Force Res Lab, Rome, NY USA.
[Morefield, Charles; Morefield, Michael] Arctan, Fairfax, VA USA.
EM alaneilsteinberg@gmail.com; cbowman@df-nn.com; gary.haith@df-nn.com;
erik.blasch.1@us.af.mil; clm@arctan-group.com; michael@arctan-group.com
NR 29
TC 0
Z9 0
U1 1
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
PY 2014
PG 8
WC Computer Science, Information Systems; Computer Science,
Interdisciplinary Applications; Computer Science, Theory & Methods
SC Computer Science
GA BD8FB
UT WOS:000363896100252
ER
PT J
AU Straka, O
Dunik, J
Simandl, M
Blasch, E
AF Straka, Ondrej
Dunik, Jindrich
Simandl, Miroslav
Blasch, Erik
GP IEEE
TI Comparison of Adaptive and Randomized Unscented Kalman Filter Algorithms
SO 2014 17TH INTERNATIONAL CONFERENCE ON INFORMATION FUSION (FUSION)
LA English
DT Proceedings Paper
CT 17th International Conference on Information Fusion (FUSION)
CY JUL 07-10, 2014
CL Salamanca, SPAIN
SP ISIF, VNiVERSiDAD Salamanca, Univ Carlos Madrid, IBM, IEEE, Indra
DE State estimation; Estimation theory; Nonlinear filters; Kalman
filtering; unscented Kalman filter
ID REGIONS
AB The paper deals with state estimation of nonlinear dynamic stochastic systems with a special focus on advanced unscented Kalman filter algorithms. Two algorithms are considered: the adaptive unscented Kalman filter and the randomized unscented Kalman filter. Both algorithms construct one or several sigma-points set used for an approximation of the conditional state moments. While the adaptive algorithm obtains a sigma-point set by optimization of a criterion, the randomized algorithm constructs several sets randomly. In the paper, both algorithms are compared and a recommendation for an application of the algorithms is provided. The algorithms are illustrated in a bearings-only target tracking example.
C1 [Straka, Ondrej; Dunik, Jindrich; Simandl, Miroslav] Univ W Bohemia, Fac Sci Appl, Dept Cybernet, European Ctr Excellence New Technol Informat Soc, Plzen 30614, Czech Republic.
[Blasch, Erik] Air Force Res Lab, Rome, NY USA.
RP Straka, O (reprint author), Univ W Bohemia, Fac Sci Appl, Dept Cybernet, European Ctr Excellence New Technol Informat Soc, Univ 8, Plzen 30614, Czech Republic.
EM straka30@kky.zcu.cz; dunikj@kky.zcu.cz; simandl@kky.zcu.cz;
erik.blasch.1@us.af.mil
NR 26
TC 0
Z9 0
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
PY 2014
PG 8
WC Computer Science, Information Systems; Computer Science,
Interdisciplinary Applications; Computer Science, Theory & Methods
SC Computer Science
GA BD8FB
UT WOS:000363896100265
ER
PT S
AU Cumby, B
Heikenfeld, J
Tabor, C
Mast, D
Dickey, M
AF Cumby, Brad
Heikenfeld, Jason
Tabor, Christopher
Mast, David
Dickey, Michael
GP IEEE
TI Robust Pressure-Actuated Liquid Metal Devices Showing Reconfigurable
Electromagnetic Effects at GHz Frequencies
SO 2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE Antennas-and-Propagation-Society International Symposium (APSURSI)
CY JUL 06-11, 2014
CL Memphis, TN
SP Inst Elect Elect Engineers, Inst Elect Elect Engineers Antennas & Propagat Soc
AB Pressure-actuated liquid metal devices are demonstrated for reconfigurable electromagnetic fundamentals at GHz frequencies, including tunable dipole antennas, switchable shielding with 35 dB attenuation, similar to 30 dB polarizer attenuation, and similar to 40 degree diffraction from a linear grating. In addition to a wide variety of electromagnetic effects, these devices are further advanced by: being highly physically flexible; in use of non-toxic GaInSn (68.5% Ga, 21.5% In, and 10.0% Sn) alloy as enabled by a sealed closed system with an acidic vapor background; and non-alloying/corrosion-resistant carbon inks for electrical connection. Collectively, this work addresses a wide variety of electromagnetic fundamentals, and the device construction advances required for real-world applications.
C1 [Cumby, Brad; Heikenfeld, Jason] Univ Cincinnati, Dept Elect Engn & Comp Syst, Cincinnati, OH 45220 USA.
[Tabor, Christopher] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH USA.
[Mast, David] Univ Cincinnati, Dept Phys, Cincinnati, OH USA.
[Dickey, Michael] N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA.
RP Cumby, B (reprint author), Univ Cincinnati, Dept Elect Engn & Comp Syst, Cincinnati, OH 45220 USA.
EM heikenjc@ucmail.uc.edu
NR 4
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4799-3540-6
J9 IEEE ANTENNAS PROP
PY 2014
BP 553
EP 554
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD5LF
UT WOS:000361554400272
ER
PT S
AU Tomasic, B
Champion, M
AF Tomasic, Boris
Champion, Michelle
GP IEEE
TI Analysis of Sparse Trifilar Array Antenna
SO 2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE Antennas-and-Propagation-Society International Symposium (APSURSI)
CY JUL 06-11, 2014
CL Memphis, TN
SP Inst Elect Elect Engineers, Inst Elect Elect Engineers Antennas & Propagat Soc
AB A sparse trifilar antenna can support two independent beams while, to reduce the interference between the beams, each array element supports only one beam. To minimize the grating lobe effects each beam is formed by three spiral arms resulting in a sparse random array arrangement. In this paper we investigate the impedance and radiation characteristics of such an array. We have shown that the active reflection coefficients are somewhat degraded in comparison to a fully populated array, however the directivity remains approximately the same, making the trifilar array a viable solution for multi-frequency, multi-beam communication applications.
C1 [Tomasic, Boris; Champion, Michelle] US Air Force, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Tomasic, B (reprint author), US Air Force, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
EM boris.tomasic@wpafb.af.mil; michelle.champion@wpafb.af.mil
NR 2
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4799-3540-6
J9 IEEE ANTENNAS PROP
PY 2014
BP 866
EP 867
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD5LF
UT WOS:000361554400425
ER
PT S
AU Herscovici, N
Champion, M
AF Herscovici, Naftali
Champion, Michelle
GP IEEE
TI Antennas Operating in Close Proximity of Textured Surfaces
SO 2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE Antennas-and-Propagation-Society International Symposium (APSURSI)
CY JUL 06-11, 2014
CL Memphis, TN
SP Inst Elect Elect Engineers, Inst Elect Elect Engineers Antennas & Propagat Soc
AB In this paper a new method to reduce the interaction between antennas and nearby objects is proposed. It involves the use of a thin textured surface similar to a high-impedance layer that is wrapped around the objects that are in close proximity of the antenna (ground planes, various platforms, etc.). The textured surface acts as a "diffuser" spreading the reflected fields from the close objects and thereby reducing the power otherwise directed in the specular reflections. This method allows reducing the profile of endfire antennas working in close proximity to various platforms.
C1 [Herscovici, Naftali; Champion, Michelle] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45432 USA.
RP Herscovici, N (reprint author), Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45432 USA.
EM naftali.herscovici@wpafb.af.mil; michelle.champion@wpafb.af.mil
NR 0
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4799-3540-6
J9 IEEE ANTENNAS PROP
PY 2014
BP 985
EP 986
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD5LF
UT WOS:000361554401056
ER
PT S
AU Ali, M
Bishop, N
Wright, M
Baron, W
Miller, J
Tuss, J
Zeppettella, D
AF Ali, Mohammod
Bishop, Nicholas
Wright, Michael
Baron, William
Miller, Jason
Tuss, James
Zeppettella, David
GP IEEE
TI A Pixelated Pattern Reconfigurable Yagi-Uda Array for Conformal
Loadbearing Antenna Structure (CLAS)
SO 2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE Antennas-and-Propagation-Society International Symposium (APSURSI)
CY JUL 06-11, 2014
CL Memphis, TN
SP Inst Elect Elect Engineers, Inst Elect Elect Engineers Antennas & Propagat Soc
AB A conformal pixelated pattern reconfigurable Yagi-Uda array is proposed. The array operates at around 2.5 GHz and can steer the beam in the 45 and -45 degree directions with the help of RF switches and a metal reflector placed 1 inch below the array surface.
C1 [Ali, Mohammod; Bishop, Nicholas; Wright, Michael] Univ S Carolina, Dept Elect Engn, Columbia, SC 29208 USA.
[Baron, William; Miller, Jason; Tuss, James; Zeppettella, David] US Air Force, Res Lab AFRL, Wright Patterson AFB, OH 45433 USA.
RP Ali, M (reprint author), Univ S Carolina, Dept Elect Engn, Columbia, SC 29208 USA.
EM alimo@cec.sc.edu
NR 7
TC 0
Z9 0
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4799-3540-6
J9 IEEE ANTENNAS PROP
PY 2014
BP 1089
EP 1090
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD5LF
UT WOS:000361554401107
ER
PT S
AU Bishop, N
Ali, M
Baron, W
Miller, J
Tuss, J
Zeppettella, D
AF Bishop, Nicholas
Ali, Mohammod
Baron, William
Miller, Jason
Tuss, James
Zeppettella, David
GP IEEE
TI Aperture Coupled MEMS Reconfigurable Pixel Patch Antenna for Conformal
Load Bearing Antenna Structures (CLAS)
SO 2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE Antennas-and-Propagation-Society International Symposium (APSURSI)
CY JUL 06-11, 2014
CL Memphis, TN
SP Inst Elect Elect Engineers, Inst Elect Elect Engineers Antennas & Propagat Soc
ID MICROSTRIP ANTENNAS; INTEGRATION; LINKS
AB The study and design of an aperture coupled MEMS reconfigurable pixel patch antenna is proposed for operation under the CLAS concept. By activating and deactivating certain sections of a pixelated area the antenna is reconfigured in three frequency bands within 1-2 GHz. Simulation results show that the antenna bandwidth ranges from 5% to 25% and the peak realized gain is greater than 9 dBi.
C1 [Bishop, Nicholas; Ali, Mohammod] Univ S Carolina, Dept Elect Engn, Columbia, SC 29208 USA.
[Baron, William; Miller, Jason; Tuss, James; Zeppettella, David] US Air Force, Res Lab AFRL, Wright Patterson AFB, OH 45433 USA.
RP Bishop, N (reprint author), Univ S Carolina, Dept Elect Engn, Columbia, SC 29208 USA.
EM alimo@cec.sc.edu
NR 9
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4799-3540-6
J9 IEEE ANTENNAS PROP
PY 2014
BP 1091
EP 1092
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD5LF
UT WOS:000361554401108
ER
PT S
AU Ali, M
Bishop, N
Baron, W
Smyers, B
Tuss, J
Zeppettella, D
AF Ali, Mohammod
Bishop, Nicholas
Baron, William
Smyers, Brian
Tuss, James
Zeppettella, David
GP IEEE
TI A MEMS Reconfigurable Pixel Microstrip Patch Antenna for Conformal Load
Bearing Antenna Structures (CLAS) Concept
SO 2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE Antennas-and-Propagation-Society International Symposium (APSURSI)
CY JUL 06-11, 2014
CL Memphis, TN
SP Inst Elect Elect Engineers, Inst Elect Elect Engineers Antennas & Propagat Soc
ID INTEGRATION; LINKS
AB A four by four pixelated microstrip patch antenna is reconfigured in three frequencies using RF MEMS switches. The proposed antenna can be integrated within a physical structure under the CLAS concept which can replace bolt-on antennas. Structural testing of the antenna clearly demonstrates the structural robustness of this CLAS reconfigurable antenna.
C1 [Ali, Mohammod; Bishop, Nicholas] Univ S Carolina, Dept Elect Engn, Columbia, SC 29208 USA.
[Baron, William; Smyers, Brian; Tuss, James; Zeppettella, David] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Ali, M (reprint author), Univ S Carolina, Dept Elect Engn, Columbia, SC 29208 USA.
EM alimo@cec.sc.edu
NR 8
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4799-3540-6
J9 IEEE ANTENNAS PROP
PY 2014
BP 1093
EP 1094
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD5LF
UT WOS:000361554401109
ER
PT S
AU Meng, HT
Nie, BL
Jin, JM
Wong, S
Macon, C
AF Meng, Huan-Ting
Nie, Bao-Lin
Jin, Jian-Ming
Wong, Steven
Macon, Charles
GP IEEE
TI Acceleration of the Finite Element Method Using Hybrid OpenMP-CUDA
SO 2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE Antennas-and-Propagation-Society International Symposium (APSURSI)
CY JUL 06-11, 2014
CL Memphis, TN
SP Inst Elect Elect Engineers, Inst Elect Elect Engineers Antennas & Propagat Soc
AB Graphics processing units (GPUs) are efficient in accelerating algorithms that are highly parallelizable. This paper discusses various aspects of parallelizing the traditional finite element algorithm, whose communication-intensive nature makes it difficult to be parallelized in a straightforward manner, and proposes solutions to alleviate the acceleration bottlenecks. The examples show that decent speedup can still be achieved over OpenMP-enabled CPUs.
C1 [Meng, Huan-Ting; Nie, Bao-Lin; Jin, Jian-Ming] Univ Illinois, Urbana, IL 61801 USA.
[Wong, Steven] Dynamics Res Corp, Wright Patterson AFB, OH 45433 USA.
[Macon, Charles] US Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Meng, HT (reprint author), Univ Illinois, Urbana, IL 61801 USA.
NR 2
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4799-3540-6
J9 IEEE ANTENNAS PROP
PY 2014
BP 1379
EP 1380
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD5LF
UT WOS:000361554401246
ER
PT S
AU Park, J
Ding, KH
Fuchs, Z
Kim, K
Mudaliar, S
Stevens, WG
Tzanos, P
AF Park, James
Ding, Kung-Hau
Fuchs, Zachariah
Kim, Kristopher
Mudaliar, Saba
Stevens, William G.
Tzanos, Panos
GP IEEE
TI Polarimetric Doppler Spectra of S-Band Inland Reservoir Clutter
SO 2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE Antennas-and-Propagation-Society International Symposium (APSURSI)
CY JUL 06-11, 2014
CL Memphis, TN
SP Inst Elect Elect Engineers, Inst Elect Elect Engineers Antennas & Propagat Soc
C1 [Park, James; Ding, Kung-Hau; Fuchs, Zachariah; Kim, Kristopher; Mudaliar, Saba; Stevens, William G.; Tzanos, Panos] Air Force Res Lab, Sensors Directorate, Antenna & Electromagnet Technol Branch, Wright Patterson AFB, OH 45433 USA.
RP Park, J (reprint author), Air Force Res Lab, Sensors Directorate, Antenna & Electromagnet Technol Branch, Wright Patterson AFB, OH 45433 USA.
EM James.Park@wpafb.af.mil; Kung-Hau.Ding@wpafb.af.mil;
Zachariah.Fuchs@wpafb.af.mil; Kristopher.Kim@wpafb.af.mil;
Saba.Mudaliar@wpafb.af.mil; Panayiotis.Tzanos.ctr@us.af.mil
NR 6
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4799-3540-6
J9 IEEE ANTENNAS PROP
PY 2014
BP 1610
EP 1611
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD5LF
UT WOS:000361554401358
ER
PT S
AU Lawrance, J
Christodoulou, C
AF Lawrance, Julie
Christodoulou, Christos
GP IEEE
TI A High Power Microwave Zoom Antenna with Metal Plate Lenses
SO 2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE Antennas-and-Propagation-Society International Symposium (APSURSI)
CY JUL 06-11, 2014
CL Memphis, TN
SP Inst Elect Elect Engineers, Inst Elect Elect Engineers Antennas & Propagat Soc
AB Metal plate lens antennas were designed and constructed for a high power microwave zoom antenna concept comprising a horn feed antenna and two metal plate lenses. Good agreement was found between experiment and simulation. This antenna provides true zoom capability in the TEM mode with continuously variable diameter pencil beam output and approximately 10% bandwidth.
C1 [Lawrance, Julie] Air Force Res Lab, Albuquerque, NM 87185 USA.
[Christodoulou, Christos] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA.
RP Lawrance, J (reprint author), Air Force Res Lab, Albuquerque, NM 87185 USA.
NR 2
TC 0
Z9 0
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4799-3540-6
J9 IEEE ANTENNAS PROP
PY 2014
BP 1652
EP 1653
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD5LF
UT WOS:000361554401378
ER
PT S
AU Kim, KT
Kramer, BA
AF Kim, Kristopher T.
Kramer, Brad A.
GP IEEE
TI Direct Determination of the T Matrix from a MoM Impedance Matrix
Generated with the Rao-Wilton-Glisson Basis Function
SO 2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE Antennas-and-Propagation-Society International Symposium (APSURSI)
CY JUL 06-11, 2014
CL Memphis, TN
SP Inst Elect Elect Engineers, Inst Elect Elect Engineers Antennas & Propagat Soc
ID ELECTROMAGNETIC SCATTERING
AB We present an explicit and numerically exact method for determining the T matrix of an arbitrarily shaped PEC object directly from a MoM impedance matrix that is generated using the Rao-Wilton-Glisson basis function for use in multiple-scattering calculations.
C1 [Kim, Kristopher T.; Kramer, Brad A.] Air Force Res Lab, Antenna Technol Branch, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Kim, KT (reprint author), Air Force Res Lab, Antenna Technol Branch, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
NR 8
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4799-3540-6
J9 IEEE ANTENNAS PROP
PY 2014
BP 2004
EP 2005
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD5LF
UT WOS:000361554402047
ER
PT S
AU Watson, P
Mattamana, A
Gilbert, R
Royter, Y
Lau, M
Valles, I
Li, J
AF Watson, P.
Mattamana, A.
Gilbert, R.
Royter, Y.
Lau, M.
Valles, I.
Li, J.
GP IEEE
TI A Wide-Bandwidth W-band LNA in InP/Si BiCMOS Technology
SO 2014 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS)
SE IEEE MTT-S International Microwave Symposium
LA English
DT Proceedings Paper
CT IEEE MTT-S International Microwave Symposium (IMS)
CY JUN 01-06, 2014
CL Tampa, FL
SP IEEE MTT S
DE W-band; LNA; BiCMOS; InP; Silicon
AB This paper presents the development of high-gain, wide-bandwidth, W-band LNA integrated circuits utilizing a novel 0.25 mu m InP/Si BiCMOS process with Ft/Fmax of 330/270 GHz. A 4-stage microstrip LNA achieves a minimum NF of 5.7 dB at 92 GHz and remains less than 7.2 dB (6.4 dB avg.) across a 75-100 GHz bandwidth. The LNA also exhibits a peak gain of 27.7 dB, a 3-dB bandwidth of 18 GHz (80-98 GHz), gain> 20 dB over 75-110 GHz, while consuming only 19.2 mW of DC power from a 1.2V supply. Additionally, individual bias control for each device has been incorporated to vary gain, including a version with two 3-bit current steering DACs to control base currents. The 0.42 mm(2) (w/o pads) LNA is suitable for many emerging W-band applications including radar, communications, and imaging and provides superior performance compared to published LNAs developed in available SiGe BiCMOS technologies.
C1 [Watson, P.; Mattamana, A.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
[Gilbert, R.] Wyle Labs Inc, Dayton, OH USA.
[Royter, Y.; Lau, M.; Valles, I.; Li, J.] HRL Labs LLC, Malibu, CA USA.
RP Watson, P (reprint author), Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
NR 13
TC 0
Z9 0
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0149-645X
BN 978-1-4799-3869-8
J9 IEEE MTT S INT MICR
PY 2014
PG 4
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA BD7MH
UT WOS:000363283700012
ER
PT S
AU Wegener, AT
AF Wegener, Andrew T.
GP IEEE
TI Broadband Near-field Filters for Simultaneous Transmit and Receive in a
Small Two-Dimensional Array
SO 2014 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS)
SE IEEE MTT-S International Microwave Symposium
LA English
DT Proceedings Paper
CT IEEE MTT-S International Microwave Symposium (IMS)
CY JUN 01-06, 2014
CL Tampa, FL
SP IEEE MTT S
DE Antenna Arrays; Simultaneous Transmit and Receive; Tunable filters
AB In order to enable Simultaneous Transmit and Receive (STAR), it is essential to provide high isolation between antenna elements. A novel technique is presented here in which tunable resonators are used in the near-field of an array of antennas to provide transmission zeros in the coupling between antennas. By using two sets of tunable resonators between each set of adjacent antennas, it is possible to significantly increase the bandwidth of the isolation provided relative to previous topologies used to give isolation between planar antennas.
C1 Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Wegener, AT (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 5
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0149-645X
BN 978-1-4799-3869-8
J9 IEEE MTT S INT MICR
PY 2014
PG 3
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA BD7MH
UT WOS:000363283700431
ER
PT S
AU Sobolewski, M
AF Sobolewski, Michael
BE Cha, J
Chou, SY
Stjepandic, J
Curran, R
Xu, W
TI Unifying Front-end and Back-end Federated Services for Integrated
Product Development
SO MOVING INTEGRATED PRODUCT DEVELOPMENT TO SERVICE CLOUDS IN THE GLOBAL
ECONOMY
SE Advances in Transdisciplinary Engineering
LA English
DT Proceedings Paper
CT 21st ISPE Inc International Conference on Concurrent Engineering
CY SEP 08-11, 2014
CL Beijing Jiaotong Univ, PEOPLES R CHINA
SP Int Soc Productiv Enhancement Inc, Chinese Acad Engn, Natl Nat Sci Fdn China, Chinese Mech Engn Soc, IOS Press, PROSPET AG
HO Beijing Jiaotong Univ
DE SORCER; SOA; SOOA; exertions; var-models; service-oriented mogramming;
IPD; concurrent engineering
AB Improvements in the design and manufacturing processes, and the related technologies that enable them, have led to significant improvements in product functionality and quality. However, the need for further improvements in these areas is needed due to increasing complexity of integrated product process development (IPD). Introduction of a new IPD project is more complex than most people realize and getting more complex all the time. Some of the complexity is due to rapidly changing and advancing technologies in underlying hardware and software, and the interplay of individual complex methods in system configurations. A strong IPD methodology, with intrinsically higher fidelity models to actualize the agile service-oriented design/manufacturing processes, is needed which can be continuously upgraded and modified. This paper describes a true service-oriented architecture that describes everything, anywhere, anytime as a service with the innovative service-oriented process expression (front-end services called exertions) and its dynamic and on-demand actualization (back-end service providers). Domain-specific languages (DSLs) for modeling or programming or both (mogramming) are introduced and their unifying role of front/back-end services is presented. Moving to the back-end of IPD systems front-end process expressions, that are easily created and updated by the end users, is the key strategy in reducing complexity of large-scale IPD systems. It allows for process expressions in DSLs to become directly available as back-end service providers that normally are developed by experts and software developers that cope constantly with the compatibility, software, and system integration issues that become more complex all the time.
C1 [Sobolewski, Michael] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Sobolewski, Michael] Polish Japanese Inst IT, PL-02008 Warsaw, Poland.
RP Sobolewski, M (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 12
TC 3
Z9 3
U1 1
U2 4
PU IOS PRESS
PI AMSTERDAM
PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS
SN 2352-7528
BN 978-1-61499-440-4; 978-1-61499-439-8
J9 ADV TRANSDISCIPL ENG
PY 2014
VL 1
BP 3
EP 16
DI 10.3233/978-1-61499-440-4-3
PG 14
WC Engineering, Industrial; Engineering, Manufacturing
SC Engineering
GA BD7LM
UT WOS:000363266900001
ER
PT B
AU Camburn, BA
Dunlap, BU
Kuhr, R
Viswanathan, VK
Linsey, JS
Jensen, DD
Crawford, RH
Otto, K
Wood, KL
AF Camburn, Bradley A.
Dunlap, Brock U.
Kuhr, Rachel
Viswanathan, Vimal K.
Linsey, Julie S.
Jensen, Dan D.
Crawford, Richard H.
Otto, Kevin
Wood, Kristin L.
GP ASME
TI METHODS FOR PROTOTYPING STRATEGIES IN CONCEPTUAL PHASES OF DESIGN:
FRAMEWORK AND EXPERIMENTAL ASSESSMENT
SO PROCEEDINGS OF THE ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL
CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE,
2013, VOL 5
LA English
DT Proceedings Paper
CT ASME International Design Engineering Technical Conferences / Computers
and Information in Engineering Conference (IDETC/CIE)
CY AUG 04-07, 2013
CL Portland, OR
SP ASME, Design Engn Div, ASME, Comp & Informat Engn Div
ID SPREADING ACTIVATION THEORY; DECISIONS
AB Prototyping may be simultaneously one of the most important and least formally explored areas of design. Over the last few decades, designers and researchers have developed many methodologies for ideation, product architecture, design selection, and many other aspects of the design process. However, there have been relatively few methodologies published regarding the efficient and effective development of prototypes for new products. This research explores a methodology for enhancing the prototyping process. It is founded on extensive literature review of the best practices of engineering prototype development. These findings have been aggregated and form the foundation of a methodology for formulating prototyping strategies. This methodology has then been experimentally evaluated in a controlled design environment, and its effect on the performance of prototypes has been demonstrated. The method consists of a set of guiding questions with corresponding flowcharts and foundational equations That assist the designer to make choices about how to approach the prototyping process in an efficient and effective manner.
C1 [Camburn, Bradley A.; Dunlap, Brock U.; Crawford, Richard H.] Univ Texas Austin, Austin, TX 78712 USA.
[Kuhr, Rachel; Otto, Kevin; Wood, Kristin L.] Singapore Univ Technol & Design, Singapore, Singapore.
[Viswanathan, Vimal K.; Linsey, Julie S.] Georgia Inst Technol, Atlanta, GA 30332 USA.
[Jensen, Dan D.] US Air Force Acad, Colorado Springs, CO 80840 USA.
RP Camburn, BA (reprint author), Univ Texas Austin, Austin, TX 78712 USA.
NR 43
TC 0
Z9 0
U1 4
U2 4
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-5592-8
PY 2014
AR V005T06A033
PG 10
WC Engineering, Industrial; Engineering, Mechanical
SC Engineering
GA BD6ML
UT WOS:000362381000033
ER
PT B
AU Reynolds, WD
Jeon, SK
Banik, JA
Murphey, TW
AF Reynolds, Whitney D.
Jeon, Sungeun K.
Banik, Jeremy A.
Murphey, Thomas W.
GP ASME
TI ADVANCED FOLDING APPROACHES FOR DEPLOYABLE SPACECRAFT PAYLOADS
SO PROCEEDINGS OF THE ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL
CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE,
2013, VOL 6B
LA English
DT Proceedings Paper
CT ASME International Design Engineering Technical Conferences / Computers
and Information in Engineering Conference (IDETC/CIE)
CY AUG 04-07, 2013
CL Portland, OR
SP ASME, Design Engn Div, ASME, Comp & Informat Engn Div
AB Radio communications apertures for spacecraft have long been implemented using deployable architectures in order to fit within the allowable launch vehicle volume. Apertures for optics missions have traditionally not been segmented because of the tight requirements on the deployed surface. By the nature of the problem, larger apertures are generally better; but complicate orbital delivery. While there are several reflectors commercially available, high packing ratios come at very high cost due to the extremely complex nature of the designs. Researchers at the Space Vehicles Directorate have been investigating ways to enable high packing ratios while reducing the design, integration, and testing complexity of deployable systems, thereby driving down cost and enabling greater mission capabilities. Recent advances in flexible composites have opened up the possibilities of packaging apertures using either distributed or concentrated strain. This paper offers an overview of recent work done to enable lower complexity deployable apertures. Several origami-inspired designs are presented including a flat spiral folding membrane, a parabolic antenna reflector, and a phased array structure.
C1 [Reynolds, Whitney D.; Banik, Jeremy A.; Murphey, Thomas W.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Jeon, Sungeun K.] Moog CSA, Engn, Albuquerque, NM USA.
RP Reynolds, WD (reprint author), Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
NR 26
TC 0
Z9 0
U1 2
U2 4
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-5594-2
PY 2014
AR V06BT07A043
PG 10
WC Engineering, Mechanical; Robotics
SC Engineering; Robotics
GA BD6RQ
UT WOS:000362533100043
ER
PT S
AU Berger, M
Seversky, LM
AF Berger, Matthew
Seversky, Lee M.
GP IEEE
TI Subspace Tracking under Dynamic Dimensionality for Online Background
Subtraction
SO 2014 IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION (CVPR)
SE IEEE Conference on Computer Vision and Pattern Recognition
LA English
DT Proceedings Paper
CT 27th IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
CY JUN 23-28, 2014
CL Columbus, OH
SP CVF, IEEE, IEEE Comp Soc
ID MOTION
AB Long-term modeling of background motion in videos is an important and challenging problem used in numerous applications such as segmentation and event recognition. A major challenge in modeling the background from point trajectories lies in dealing with the variable length duration of trajectories, which can be due to such factors as trajectories entering and leaving the frame or occlusion from different depth layers. This work proposes an online method for background modeling of dynamic point trajectories via tracking of a linear subspace describing the background motion. To cope with variability in trajectory durations, we cast subspace tracking as an instance of subspace estimation under missing data, using a least-absolute deviations formulation to robustly estimate the background in the presence of arbitrary foreground motion. Relative to previous works, our approach is very fast and scales to arbitrarily long videos as our method processes new frames sequentially as they arrive.
C1 [Berger, Matthew; Seversky, Lee M.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Berger, M (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
EM Matthew.Berger.1@us.af.mil; Lee.Seversky@us.af.mil
NR 25
TC 2
Z9 5
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1063-6919
BN 978-1-4799-5117-8
J9 PROC CVPR IEEE
PY 2014
BP 1274
EP 1281
DI 10.1109/CVPR.2014.166
PG 8
WC Computer Science, Artificial Intelligence
SC Computer Science
GA BD5LI
UT WOS:000361555601041
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI Light Propagation in Anisotropic Crystals
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 12
TC 0
Z9 0
U1 0
U2 1
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 1
EP 59
PG 59
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300002
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI Laser Beam Propagation in Nonlinear Optical Media Preface
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Editorial Material; Book Chapter
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP XXV
EP XXVI
PG 2
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300001
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI Nonlinear Optical Processes
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 11
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 61
EP 87
PG 27
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300003
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI Effective d Coefficient for Three-Wave Mixing Processes
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 6
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 89
EP 135
PG 47
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300004
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI Nonlinear Propagation Equations and Solutions
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
ID BEAMS
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 7
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 137
EP 200
PG 64
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300005
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI Quasi-Phase Matching
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 4
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 201
EP 212
PG 12
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300006
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI Optical Parametric Oscillation
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
ID LINBO3
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 12
TC 0
Z9 0
U1 0
U2 1
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 213
EP 227
PG 15
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300007
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI Numerical Beam Propagation Methods
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
ID PHASE-RETRIEVAL
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 18
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 229
EP 244
PG 16
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300008
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI Computer Codes for SFG Efficiency
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 245
EP 259
PG 15
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300009
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI Computer Codes for SHG Efficiency
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 261
EP 273
PG 13
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300010
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI The Fortran Source Code for QPM-SHG Efficiency
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 275
EP 285
PG 11
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300011
ER
PT B
AU Guha, S
Gonzalez, LP
AF Guha, Shekhar
Gonzalez, Leonel P.
BA Guha, S
Gonzalez, LP
BF Guha, S
Gonzalez, LP
TI The Fortran Source Code for OPO Threshold and Efficiency
SO LASER BEAM PROPAGATION IN NONLINEAR OPTICAL MEDIA
LA English
DT Article; Book Chapter
C1 [Guha, Shekhar; Gonzalez, Leonel P.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Guha, S (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4398-6639-9; 978-1-4398-6638-2
PY 2014
BP 287
EP 297
PG 11
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4ED
UT WOS:000360539300012
ER
PT B
AU Zimmer, VJ
Rutledge, JL
Knieriem, C
Ou, SC
AF Zimmer, Victor J.
Rutledge, James L.
Knieriem, Chris
Ou, Shichuan
GP ASME
TI THE INFLUENCE OF COOLANT UNSTEADINESS ON IMPINGEMENT HEAT TRANSFER
SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND
EXPOSITION, 2014, VOL 5A
LA English
DT Proceedings Paper
CT ASME Turbo Expo: Turbine Technical Conference and Exposition
CY JUN 16-20, 2014
CL Dusseldorf, GERMANY
SP Int Gas Turbine Inst
ID JET IMPINGEMENT
AB Interest in impingement jet cooling and the associated convection phenomena has grown in the past few decades due in part to the desire for higher operating temperatures and reduced coolant flow in turbines. This study utilizes an array of 55 impingement jets to explore both steady and unsteady impingement flow conditions to evaluate the impact of the inherent unsteadiness present in engines compared to traditional steady experiments. Although unsteadiness occurs naturally in engines, intentional pulsation of coolant flow has also been proposed for flow control purposes, further underscoring the need for examination of the impact of pulsation on the heat transfer. Flow unsteadiness of varying amplitudes was induced at Strouhal numbers of magnitude 10(-3) to 10(-4). Infrared thermography was used to determine high spatial and temporal resolution Nusselt numbers. Time-resolved Nusselt number and mass flow characteristic waveforms were found to differ substantially as a function of the fluctuation amplitude relative to the mean. In some cases, transient coolant flow increases were associated with non-monotonic behavior in the time resolved Nusselt number. Although with certain configurations unsteady flow demonstrated time-averaged Nusselt numbers equivalent to steady flow with equivalent average mass flux, those with the greatest fluctuation in the amplitude of flow unsteadiness relative to the mean resulted in lower average Nusselt numbers.
C1 [Zimmer, Victor J.; Rutledge, James L.; Knieriem, Chris] US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
[Ou, Shichuan] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Zimmer, VJ (reprint author), US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
NR 17
TC 0
Z9 0
U1 3
U2 3
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-4571-4
PY 2014
AR V05AT12A027
PG 8
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA BD6EQ
UT WOS:000362138600043
ER
PT B
AU Katta, VR
Blunck, D
AF Katta, Viswanath R.
Blunck, David
GP ASME
TI NUMERICAL STUDIES ON FLAMES ESTABLISHED IN REACTING FILM-COOLING
EXPERIMENT
SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND
EXPOSITION, 2014, VOL 5C
LA English
DT Proceedings Paper
CT ASME Turbo Expo: Turbine Technical Conference and Exposition
CY JUN 16-20, 2014
CL Dusseldorf, GERMANY
SP Int Gas Turbine Inst
ID ENGINE DURABILITY IMPACTS; AIR RATIO COMBUSTORS; JET DIFFUSION FLAMES;
SECONDARY COMBUSTION; TURBINE; SIMULATION; FUEL
AB Integration of turbine turning vanes into a combustor is needed for the development of ultra-compact combustors. A viable approach for protecting the combustor from the high-temperature fuel-rich environment is to inject air through the holes drilled on surfaces. However, it is possible that air intended to cooling may react with the fuel rich combustion products and increase the heat flux. Air Force Research Laboratory has initiated several experimental/numerical studies for investigating the flames that might develop between the injected air and fuel-rich flows in the combustor and their impact on film cooling. A time-dependent, detailed-chemistry computational-fluid-dynamics model is used in the present study for understanding the flames formed in reacting film cooling. Combustion of propane fuel with air is modeled using a chemical-kinetics mechanism involving 52 species and 544 reactions. Both laminar and turbulent flow simulations are performed. Effects of blowing ratio, equivalence ratio and sidewall cooling are investigated. Simulations have reproduced various flame characteristics observed in the experiments. Numerical results are used for explaining the non-intuitive shift in flame anchoring location to the changes in blowing ratio and equivalence ratio. The higher diffusive mass transfer rate of hydrogen in comparison to the local heat transport enhances cooling of cross-flow combustion products, which, in turn, affects the autoignition process. While increasing the blowing ratio abates the differences resulting from non-equal mass and heat transport rates, higher concentrations of hydrogen in the fuel-rich cross-flows accelerate those differences.
C1 [Katta, Viswanath R.] Innovat Sci Solut Inc, Dayton, OH 45459 USA.
[Blunck, David] US Air Force, Res Lab, Wright Patterson AFB, OH USA.
RP Katta, VR (reprint author), Innovat Sci Solut Inc, Dayton, OH 45459 USA.
NR 27
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-4573-8
PY 2014
AR V05CT18A010
PG 11
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA BD6ES
UT WOS:000362139600054
ER
PT B
AU Shewhart, AT
Polanka, MD
Robertson, JJ
Greiner, NJ
Rutledge, JL
AF Shewhart, Andrew T.
Polanka, Marc D.
Robertson, Jacob J.
Greiner, Nathan J.
Rutledge, James L.
GP ASME
TI Minimization of Heat Load due to Secondary Reactions in Fuel Rich
Environments
SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND
EXPOSITION, 2014, VOL 5C
LA English
DT Proceedings Paper
CT ASME Turbo Expo: Turbine Technical Conference and Exposition
CY JUN 16-20, 2014
CL Dusseldorf, GERMANY
SP Int Gas Turbine Inst
ID ENGINE DURABILITY IMPACTS; AIR RATIO COMBUSTORS
AB The demand for increased thrust, higher engine efficiency, and reduced fuel consumption has increased the turbine inlet temperature and pressure in modern gas turbine engines. The outcome of these higher temperatures and pressures is the potential for unconsumed radical species to enter the turbine. Because modern cooling schemes for turbine blades involve injecting cool, oxygen rich air adjacent to the surface, the potential for reaction with radicals in the mainstream flow and augmented heat transfer to the blade arises. This result is contrary to the purpose of film cooling. In this environment there is a competing desire to consume any free radicals prior to the flow entering the rotor stage while still maintaining surface temperatures below the metal melting temperature.
This study evaluated various configurations of multiple cylindrical rows of cooling holes in terms of both heat release and effective downstream cooling. Results were evaluated based on a new Wall Absorption parameter which combined the additional heat available from these secondary reactions with the length of the resulting flame to determine which schemes protected the wall more efficiently. Two particular schemes showed promise. The two row upstream configuration reduced the overall augmentation of heat by creating a short, concentrated reaction area. Conversely, the roll forward configuration minimized the local heat flux enhancement by spreading the reaction area over the surface being cooled.
C1 [Shewhart, Andrew T.; Polanka, Marc D.; Robertson, Jacob J.; Greiner, Nathan J.; Rutledge, James L.] US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Shewhart, AT (reprint author), US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
NR 13
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-4573-8
PY 2014
AR V05CT18A009-1
PG 12
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA BD6ES
UT WOS:000362139600053
ER
PT B
AU Scott-Emuakporl, O
George, T
Beck, J
Schwartz, J
Holycrossz, C
Shen, MHH
Slater, J
AF Scott-Emuakporl, Onome
George, Tommy
Beck, Joseph
Schwartz, Jeremy
Holycrossz, Casey
Shen, M. H. Herman
Slater, Joseph
GP ASME
TI Material Property Determination of Vibration Fatigued DMLS and
Cold-Rolled Nickel Alloys
SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND
EXPOSITION, 2014, VOL 7A
LA English
DT Proceedings Paper
CT ASME Turbo Expo: Turbine Technical Conference and Exposition
CY JUN 16-20, 2014
CL Dusseldorf, GERMANY
SP Int Gas Turbine Inst
AB The modulus is under-predicted with this method, but An experimental procedure for qualifying material properties suggestions for improving the model are discussed. from cyclically worked parts was investigated in support of aging gas turbine engines and digital twin initiatives. For aging components, remanufacturing. or repair efforts are necessary to sustain the life cycles of engines; and for digital twin, the virtual representation of a part requires accurate geometric and component material property measurement. Therefore, having an effective, non-destructive way to assess the material performance of parts is necessary. Since low cycle, low strain, mechanical testing is the ideal experimental approach for nondestructively assessing material properties, investigating the accuracy and trends of tensile properties of fatigue loaded parts was important. The fatigued parts used for this study were specimens tested according to the George Fatigue Method, and the materials observed were cold-rolled Inconel Alloys 625 and 718, and direct metal laser sintering (DMLS) Nickel Alloy 718. The tensile material properties were compared against pristine (non-fatigued) and published data. The comparison for the cold-rolled 625 and 718 results show an increase and a decrease, depending on rolling direction, of tensile strength due to the effects of fatigue cycles; however, the variation of the vibration affected tensile properties are all within one standard deviation of the pristine data. The comparisons of DMLS Nickel Alloys was conducted against two sets of alloys from different suppliers, and the results showed that the tensile properties are sensitive to DMLS manufacturing parameters and post-sintering processes. A digital twin related, non-destructive, material property determination technique is also discussed in this manuscript. The true alloy density was determined with the water displacement method, and elastic modulus is determined with an iterative Ritz method model.
C1 [Scott-Emuakporl, Onome; George, Tommy; Beck, Joseph; Schwartz, Jeremy] US Air Force, Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
[Holycrossz, Casey; Shen, M. H. Herman] Ohio State Univ, Dept Mech & Aerosp Engn, Columbus, OH 43210 USA.
[Slater, Joseph] Wright State Univ, Dept Mech & Mat Engn, Dayton, OH 45435 USA.
RP Scott-Emuakporl, O (reprint author), US Air Force, Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
EM onome.scott-emualcpor@wpafb.af.mil
NR 20
TC 0
Z9 0
U1 3
U2 6
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-4576-9
PY 2014
AR V07AT28A008
PG 8
WC Engineering, Industrial; Engineering, Mechanical
SC Engineering
GA BD6IK
UT WOS:000362240100008
ER
PT B
AU Kaszynski, AA
Beck, JA
Brown, JM
AF Kaszynski, Alexander A.
Beck, Joseph A.
Brown, Jeffrey M.
GP ASME
TI AUTOMATED FINITE ELEMENT MODEL MESH UPDATING SCHEME APPLICABLE TO
MISTUNING ANALYSIS
SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND
EXPOSITION, 2014, VOL 7B
LA English
DT Proceedings Paper
CT ASME Turbo Expo: Turbine Technical Conference and Exposition
CY JUN 16-20, 2014
CL Dusseldorf, GERMANY
SP Int Gas Turbine Inst
AB Advancement of optical geometric measurement hardware has enabled the construction of accurate 3D tessellated models for a wide range of turbomachinery components. These tessellated models can be reverse-engineered into computer-aided design (CAD) models and input into grid generation software for finite element analyses. Howevel; generating a CAD model from scan data is a time consuming and cumbersome process requiring significant user-involvement for even a single model. While it is possible to generate finite element models (FEMs) directly from tessellated data, current direct-grid methods produce unstructured grids that can introduce fictitious, numerical mistuning in these models, obscuring geometric mistuning. Nonetheless, as-measured scan data captured in a structured grid is essential for accurate geometric mistuning analyses, provided the tessellated scan data can be rapidly and accurately transformed into a FEM. This paper outlines and demonstrates an approach for rapidly generating structured FEMs for a population of integrally bladed rotors (IBRs) without requiring the arduous task of generating a CAD model for each as-measured IBR. This is accomplished by morphing the structured mesh of a nominal model to the tessellated data set collected from an optical scanner It is shown that the fidelity and structure of these FEMs can be utilized for accurate mistuning analyses.
C1 [Kaszynski, Alexander A.; Beck, Joseph A.; Brown, Jeffrey M.] US Air Force Res Lab, Turbine Engine Div, Wright Patterson AFB, OH 45431 USA.
RP Kaszynski, AA (reprint author), US Air Force Res Lab, Turbine Engine Div, Wright Patterson AFB, OH 45431 USA.
EM alexander.kaszynski.1@us.af.mil
NR 27
TC 0
Z9 0
U1 1
U2 1
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-4577-6
PY 2014
AR V07BT33A025
PG 12
WC Engineering, Mechanical
SC Engineering
GA BD6IL
UT WOS:000362240200055
ER
PT J
AU Chapman, W
Ranka, S
Sahni, S
Schmalz, M
Moore, L
Elton, B
AF Chapman, William
Ranka, Sanjay
Sahni, Sartaj
Schmalz, Mark
Moore, Linda
Elton, Bracy
GP IEEE
TI A Framework for Rendering High Resolution Synthetic Aperture Radar
Images on Heterogeneous Architectures
SO 2014 IEEE SYMPOSIUM ON COMPUTERS AND COMMUNICATION (ISCC)
LA English
DT Proceedings Paper
CT IEEE Symposium on Computers and Communication (ISCC)
CY JUN 23-26, 2014
CL Funchal, PORTUGAL
SP IEEE
AB This paper presents a modular, extensible, framework for rendering images from synthetic aperture radar (SAR) data on an array of heterogeneous processor architectures. Our design supports real-time reconstruction of a two-dimensional image from a matrix of echo pulses and their corresponding response values using Backprojection. Key to our design is the division of the Backprojection problem into atoms, which decomposes Backprojection along both it's input and output data dimensions, and allows scheduling algorithms to explicitly minimize communication overhead through the deliberate assignment of atoms to processors. Performance analysis on a cluster of 10 Tesla C2050 GPUs, and 5 Intel Xeon Processor X5650 CPUs has shown speedup that closely follows the number of processors in the cluster.
C1 [Chapman, William; Ranka, Sanjay; Sahni, Sartaj; Schmalz, Mark] Univ Florida, Dept Comp Informat Sci & Engn, Gainesville, FL 32611 USA.
[Moore, Linda] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Chapman, W (reprint author), Univ Florida, Dept Comp Informat Sci & Engn, Gainesville, FL 32611 USA.
NR 8
TC 0
Z9 0
U1 2
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
PY 2014
PG 6
WC Computer Science, Hardware & Architecture; Computer Science, Information
Systems; Telecommunications
SC Computer Science; Telecommunications
GA BD5KL
UT WOS:000361532100012
ER
PT J
AU Johnson, JT
Baker, CJ
Smith, GE
Bell, KL
Rangaswamy, M
AF Johnson, Joel T.
Baker, Christopher J.
Smith, Graeme E.
Bell, Kristine L.
Rangaswamy, Muralidhar
GP IEEE
TI The Monostatic-Bistatic Equivalence Theorem and Bistatic Radar Clutter
SO 2014 11TH EUROPEAN RADAR CONFERENCE (EURAD)
SE European Radar Conference EuRAD
LA English
DT Proceedings Paper
CT 11th European Radar Conference (EuRAD)
CY OCT 08-10, 2014
CL Rome, ITALY
SP APS
DE radar clutter; bistatic radar; MIMO radar
ID SCATTERING
AB The applicability of the monostatic-bistatic equivalence theorem (MBET) for predicting the bistatic normalized radar cross section (NRCS) of a terrain surface given knowledge of its monostatic NRCS is examined. The first order small perturbation method (SPM) of rough surface scattering is used as an example theory for characterizing terrain backscatter. An appropriate MBET is developed for the SPM, but is found to be insufficient to predict bistatic NRCS properties in specific polarizations. However, the method is shown to be successful in describing the "total" NRCS (a combination of the NRCS in four polarization combinations.) Implications of these results for modeling bistatic clutter and possible methods for deriving a polarization specific MBET are also discussed.
C1 [Johnson, Joel T.; Baker, Christopher J.; Smith, Graeme E.] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA.
[Johnson, Joel T.; Baker, Christopher J.; Smith, Graeme E.] Ohio State Univ, ElectroSci Lab, Columbus, OH 43210 USA.
[Bell, Kristine L.] Metron Inc, Reston, VA USA.
[Rangaswamy, Muralidhar] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Johnson, JT (reprint author), Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA.
NR 12
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-2-87487-037-8
J9 EUROP RADAR CONF
PY 2014
BP 105
EP 108
PG 4
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD4RK
UT WOS:000361020600024
ER
PT B
AU Garcia, E
Casbeer, DW
AF Garcia, Eloy
Casbeer, David W.
GP ASME
TI UAV COORDINATED DECISION MAKING AND MISSION MANAGEMENT
SO 7TH ANNUAL DYNAMIC SYSTEMS AND CONTROL CONFERENCE, 2014, VOL 1
LA English
DT Proceedings Paper
CT ASME 7th Annual Dynamic Systems and Control Conference
CY OCT 22-24, 2014
CL San Antonio, TX
SP ASME, Dynam Syst & Control Div
ID MULTIPLE UAVS; ENVIRONMENTS; VEHICLES; UNCERTAIN
AB A cooperative control problem where N Unmanned Aerial Vehicles (UAVs) are assigned to eliminate M main targets is studied in this paper. The environment where these assignments are performed also includes T >> M threats that pose a risk to the group of UAVs. A decentralized optimization problem is presented where agents try to minimize a total cost that combines distance to reach main targets and exposure to threats. The main novelty here is the use of limited resources by the UAVs to eliminate threats while on their way to reach main targets. This option improves the trajectories of vehicles by further reducing total cost but it adds complexity to the optimization problem. The solution to this extended problem provides optimal decisions regarding the selection of threats to eliminate, and the corresponding trajectories to follow, in order to minimize total cost. Due to constraints imposed by communication topologies, agents implement a decentralized auction scheme in order to assign UAVs to threats while avoiding conflicts on those assignments. This paper describes the specific constraints concerning the decentralized decision process and its effects in recomputing new costs. The paper also offers preliminary results that provide coordinated selection of UAV paths and choice of threats to attack.
C1 [Garcia, Eloy] Infoscitex Corp, Wright Patterson AFB, OH 45433 USA.
[Garcia, Eloy; Casbeer, David W.] Air Force Res Lab, Control Sci Ctr Excellence, Wright Patterson AFB, OH 45433 USA.
RP Garcia, E (reprint author), Infoscitex Corp, Wright Patterson AFB, OH 45433 USA.
EM elgarcia@infoscitex.com; david.casbeer@us.af.mil
NR 16
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-4618-6
PY 2014
AR V001T14A001
PG 10
WC Automation & Control Systems; Engineering, Mechanical; Operations
Research & Management Science
SC Automation & Control Systems; Engineering; Operations Research &
Management Science
GA BD4XT
UT WOS:000361166500070
ER
PT B
AU Garcia, E
Cao, YC
Casbeer, DW
AF Garcia, Eloy
Cao, Yongcan
Casbeer, David W.
GP ASME
TI DECENTRALIZED SUB-OPTIMAL MINIMUM-TIME CONSENSUS
SO 7TH ANNUAL DYNAMIC SYSTEMS AND CONTROL CONFERENCE, 2014, VOL 1
LA English
DT Proceedings Paper
CT ASME 7th Annual Dynamic Systems and Control Conference
CY OCT 22-24, 2014
CL San Antonio, TX
SP ASME, Dynam Syst & Control Div
ID NETWORKED CONTROL-SYSTEMS; EVENT-TRIGGERED CONTROL; COMMUNICATION
AB In many multi-agent scenarios, agents must balance both local and global performance and collaboration objectives with the constraints of efficient resource utilization. Here, consensus problems with fixed communication graphs are considered, where agents strive to reach a common decision value in minimum time while simultaneously minimizing a performance cost that measures the deviation of the decision value from the desired value. The paper offers preliminary results on the selection of meaningful decision values that approximate optimal solutions. The proposed approach shows a fast convergence time and also reduces the overall number of information transmissions by the agents in the network.
C1 [Garcia, Eloy] Infoscitex Corp, Wright Patterson AFB, OH 45433 USA.
[Garcia, Eloy; Cao, Yongcan; Casbeer, David W.] Air Force Res Lab, Control Sci Ctr Excellence, Wright Patterson AFB, OH 45433 USA.
RP Garcia, E (reprint author), Infoscitex Corp, Wright Patterson AFB, OH 45433 USA.
EM elgarcia@infoscitex.com
NR 23
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-4618-6
PY 2014
AR V001T14A002
PG 10
WC Automation & Control Systems; Engineering, Mechanical; Operations
Research & Management Science
SC Automation & Control Systems; Engineering; Operations Research &
Management Science
GA BD4XT
UT WOS:000361166500071
ER
PT S
AU Pal, P
Atighetchi, M
Soule, N
Ishakian, V
Loyall, J
Grant, R
Sinclair, A
AF Pal, Partha
Atighetchi, Michael
Soule, Nathaniel
Ishakian, Vatche
Loyall, Joseph
Grant, Robert
Sinclair, Asher
GP IEEE
TI Secure and QoS-Managed Information Exchange Between Enterprise and
Constrained Environments
SO 2014 IEEE 17TH INTERNATIONAL SYMPOSIUM ON
OBJECT/COMPONENT/SERVICE-ORIENTED REAL-TIME DISTRIBUTED COMPUTING
(ISORC)
SE International Symposium on Object Component Service-Oriented Real-Time
Distributed Computing
LA English
DT Proceedings Paper
CT 17th IEEE International Symposium on Object/Component/Service-Oriented
Real-Time Distributed Computing (ISORC)
CY JUN 09-12, 2014
CL Reno, NV
SP IEEE, IEEE Comp Soc
DE gateway; middleware service; tactical and enterprise environments;
quality of service; security; information management
AB Mobile devices performing mission-critical functions at the tactical edge, such as those employed by first responders, military personnel, and law enforcement, operate in environments that are vastly different from enterprise computing environments. In spite of the differences in resource availability, threat models, vulnerabilities, information formats, and communication protocols, there is a great advantage to (and great demand for) enabling information exchange between the tactical edge and enterprise environments. Creating a specialized mobile version of each desired service that incorporates an appropriate level of security protection and quality of service (QoS) for the tactical users is one possibility. Such an approach is not cost effective, however, as the market for a given tactical application is small compared to the commercial user base for mobile applications and services. Furthermore, the need for information or services from the enterprise by tactical users can be too ad hoc and time critical, e.g., during disaster response, to support developing a specialized version. Finally, service specialization for mobile web access covers only one of multiple information dissemination and access patterns that arise in tactical operations. This paper presents the design and a prototype implementation of a gateway solution that provides secure tactical-enterprise information exchange and handles the differences in resource availability, QoS requirements, communication formats, and protocols.
C1 [Pal, Partha; Atighetchi, Michael; Soule, Nathaniel; Ishakian, Vatche; Loyall, Joseph] Raytheon BBN Technol, Cambridge, MA 02138 USA.
[Grant, Robert; Sinclair, Asher] US Air Force Res Lab, Rome, NY USA.
RP Pal, P (reprint author), Raytheon BBN Technol, Cambridge, MA 02138 USA.
EM ppal@bbn.com; matighet@bbn.com; nsoule@bbn.com; vishakia@bbn.com;
jloyall@bbn.com; Robert.Grant.11@us.af.mil; Asher.Sinclair.1@us.af.mil
NR 14
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1555-0885
BN 978-1-4799-4430-9
J9 INT SYMP OBJECT COMP
PY 2014
BP 141
EP 149
DI 10.1109/ISORC.2014.33
PG 9
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BD4NS
UT WOS:000360935800019
ER
PT S
AU Rose, GS
AF Rose, Garrett S.
GP IEEE
TI A Chaos-based Arithmetic Logic Unit and Implications for Obfuscation
SO 2014 IEEE COMPUTER SOCIETY ANNUAL SYMPOSIUM ON VLSI (ISVLSI)
SE IEEE Computer Society Annual Symposium on VLSI
LA English
DT Proceedings Paper
CT IEEE-Computer-Society Annual Symposium on VLSI (ISVLSI)
CY JUL 09-11, 2014
CL Tampa, FL
SP IEEE, IEEE Comp Soc, IEEE Circuites & Syst Soc
DE chaotic systems; logic design; arithmetic and logic units; integrated
circuits; security
AB It is no secret that modern computer systems are vulnerable to threats such as side-channel attack or reverse engineering whereby sensitive data or code could be unintentionally leaked to an adversary. It is the premise of this work that the mitigation of such security threats can be achieved by leveraging the inherent complexity of emerging chaos-based computing (computer systems built from chaotic oscillators). More specifically, this paper considers a chaos-based arithmetic logic unit which consists of many unique implementations for each possible operation. Generalizing to a chaos-based computer, a large number of implementations per operation can enable the obfuscation of critical code or data. In such a system, any two functionally equivalent operations are unique in terms of control parameters, power profiles, and so on. Furthermore, many possible implementations for each operational code can be leveraged to compile a program that is uniquely defined in terms of what the user knows-such knowledge which itself could be protected via encryption. The frequencies of the various operations are shown to approach that of a probabilistic system as the circuit is allowed to evolve in time. Further, the difficulty of a successful attack is assumed to be directly related to the number of unique op-code sets possible which is shown to grow exponentially with allowed evolution time for the proposed chaos-based arithmetic logic unit.
C1 Informat Directorate, Air Force Res Lab, Griffiss AFB, NY 13441 USA.
RP Rose, GS (reprint author), Informat Directorate, Air Force Res Lab, Griffiss AFB, NY 13441 USA.
EM garrettrose@ieee.org
NR 10
TC 2
Z9 2
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2159-3469
BN 978-1-4799-3765-3
J9 IEEE COMPUT SOC
PY 2014
BP 54
EP 58
DI 10.1109/ISVLSI.2014.72
PG 5
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BD4QJ
UT WOS:000361018000010
ER
PT S
AU Latchu, T
Pochet, M
Usechak, NG
DeRose, C
Lentine, A
Trotter, DC
Zortman, W
AF Latchu, T.
Pochet, M.
Usechak, N. G.
DeRose, C.
Lentine, A.
Trotter, D. C.
Zortman, W.
GP IEEE
TI Power-Penalty Comparison of Push-Pull and Traveling-Wave Electrode
Silicon Mach-Zehnder Modulators
SO 2014 IEEE OPTICAL INTERCONNECTS CONFERENCE
SE Optical Interconnects Conference
LA English
DT Proceedings Paper
CT 3rd IEEE-Photonics-Society Optical Interconnects Conference
CY MAY 04-07, 2014
CL San Diego, CA
SP IEEE Photon Soc, Huawei, Intel, HP Labs, Oracle Labs
AB Power-penalty measurements on two Si Mach-Zehnder modulator designs, each compatible with standard CMOS processing, were performed. The results highlight the power penalty and bandwidth advantages of the traveling-wave electrode design over a push-pull single-electrode design. (C) 2014 Optical Society of America
C1 [Latchu, T.; Pochet, M.] US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
[Usechak, N. G.] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[DeRose, C.; Lentine, A.; Trotter, D. C.; Zortman, W.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Latchu, T (reprint author), US Air Force, Inst Technol, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM michael.pochet@afit.edu
NR 3
TC 1
Z9 1
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2376-8665
BN 978-1-4799-2468-4
J9 OPT INTERCONNECT C
PY 2014
BP 25
EP 26
PG 2
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BD4QY
UT WOS:000361019400012
ER
PT J
AU Newstadt, GE
Hero, AO
Simmons, J
AF Newstadt, Gregory E.
Hero, Alfred O., III
Simmons, Jeff
GP IEEE
TI ROBUST SPECTRAL UNMIXING FOR ANOMALY DETECTION
SO 2014 IEEE WORKSHOP ON STATISTICAL SIGNAL PROCESSING (SSP)
LA English
DT Proceedings Paper
CT IEEE Workshop on Statistical Signal Processing (SSP)
CY JUN 29-JUL 02, 2014
CL Gold Coast, AUSTRALIA
SP IEEE
ID IMAGES
AB This paper is concerned with a joint Bayesian formulation for determining the endmembers and abundances of hyperspectral images along with sparse outliers which can lead to estimation errors unless accounted for. We present an inference method that generalizes previous work and provides a MCMC estimate of the posterior distribution. The proposed method is compared empirically to state-of-the-art algorithms, showing lower reconstruction and detection errors.
C1 [Newstadt, Gregory E.; Hero, Alfred O., III] Univ Michigan, Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA.
[Simmons, Jeff] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Newstadt, GE (reprint author), Univ Michigan, Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA.
EM newstage@umich.edu; hero@umich.edu; jeff.simmons@wpafb.af.mil
NR 8
TC 2
Z9 2
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-4975-5
PY 2014
BP 109
EP 112
PG 4
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BD4RB
UT WOS:000361019700028
ER
PT S
AU Manyam, SG
Rathinam, S
Darbha, S
Casbeer, D
Chandler, P
AF Manyam, Satyanarayana G.
Rathinam, Sivakumar
Darbha, Swaroop
Casbeer, David
Chandler, Phil
GP IEEE
TI Routing of Two Unmanned Aerial Vehicles with Communication Constraints
SO 2014 INTERNATIONAL CONFERENCE ON UNMANNED AIRCRAFT SYSTEMS (ICUAS)
SE International Conference on Unmanned Aircraft Systems
LA English
DT Proceedings Paper
CT International Conference on Unmanned Aircraft Systems (ICUAS)
CY MAY 27-30, 2014
CL Orlando, FL
SP IEEE Robot & Automat Soc, IEEE CSS, ICUAS, Mediterranean Control Assoc, Univ Denver
ID TRAVELING SALESMEN PROBLEM; MULTIPLE DEPOT; ALGORITHM
AB A novel GPS denied routing problem for UAVs is described, where two UAVs cooperatively navigate through an array of non-communicating Unattended Ground Sensors (UGS). Contact with UGS is strictly maintained, which allows the UGS act as beacons for relative navigation eliminating the need for dead reckoning. This problem is referred to as the Communication Constrained UAV Routing Problem (CCURP). To solve the CCURP, shortest paths between targets are computed by means of a graph transformation. Given the shortest paths between targets, two solution methods are presented. The first is a 15/2-approximation algorithm. The second method poses the CCURP as an one-in-a-set Traveling Salesman Problem (TSP), which can then be solved using known methods by transforming the problem into a regular asymmetric TSP. Computational results corroborating the performance bounds in this article are also presented.
C1 [Manyam, Satyanarayana G.; Rathinam, Sivakumar; Darbha, Swaroop] Texas A&M Univ, Mech Engn, College Stn, TX 77843 USA.
[Casbeer, David; Chandler, Phil] Air Force Res Lab, Control Sci Ctr Excellence, Wright Patterson AFB, OH USA.
RP Manyam, SG (reprint author), Texas A&M Univ, Mech Engn, College Stn, TX 77843 USA.
NR 8
TC 3
Z9 3
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2373-6720
BN 978-1-4799-2376-2
J9 INT CONF UNMAN AIRCR
PY 2014
BP 140
EP 148
PG 9
WC Engineering, Electrical & Electronic; Remote Sensing
SC Engineering; Remote Sensing
GA BD4HQ
UT WOS:000360801900017
ER
PT B
AU Abbott, AC
Buskohl, PR
Joo, JJ
Reich, GW
Vaia, RA
AF Abbott, Andrew C.
Buskohl, Philip R.
Joo, James J.
Reich, Gregory W.
Vaia, Richard A.
GP ASME
TI CHARACTERIZATION OF CREASES IN POLYMERS FOR ADAPTIVE ORIGAMI STRUCTURES
SO PROCEEDINGS OF THE ASME CONFERENCE ON SMART MATERIALS, ADAPTIVE
STRUCTURES AND INTELLIGENT SYSTEMS, 2014, VOL 1
LA English
DT Proceedings Paper
CT 7th Annual ASME Conference on Smart Materials, Adaptive Structures and
Intelligent Systems (SMASIS)
CY SEP 08-10, 2014
CL Newport, RI
SP ASME, Aerospace Div
ID PAPERBOARD
AB Techniques employed in origami are of interest for the design of actuating structures with multiple defined geometric states. Most research in this area has focused on manipulating material chemistry or geometry to achieve folding, but crease development through full material thickness has not been studied in detail. Understanding creasing is crucial for establishing material selection guidelines in origami engineering applications. Identification of the precise failure mechanisms is critical for understanding the residual fold angle and selecting optimal materials for specific origami applications. To characterize crease formation and development, polymer films were folded using a modified parallel plate bending technique which was successfully modeled with Euler beam theory in the elastic regime. Fold angles measured after creasing provided a means to quantitatively describe a material's ability to retain a fold, and degree of plastic deformation incurred during folding. SEM micrographs of creased regions revealed tensile deformations on exterior crease surfaces while compressive deformations such as wrinkling occurred inside. Profilometry was performed on crease interiors to identify and measure wrinkle topology. It was found that increased dissipative plastic deformation led to retention of smaller fold angles. These characterization techniques can be used as a means of classifying and organizing polymers by potential usefulness in structural origami applications.
C1 [Abbott, Andrew C.; Buskohl, Philip R.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
[Abbott, Andrew C.; Buskohl, Philip R.; Vaia, Richard A.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH USA.
[Joo, James J.; Reich, Gregory W.] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH USA.
[Abbott, Andrew C.] Univ Dayton, Dayton, OH 45469 USA.
RP Abbott, AC (reprint author), Universal Energy Syst Inc, 4401 Dayton Xenia Rd, Dayton, OH 45432 USA.
NR 18
TC 0
Z9 0
U1 1
U2 2
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-4614-8
PY 2014
AR V001T01A009
PG 7
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA BD4NY
UT WOS:000360948000009
ER
PT B
AU Fuchi, K
Buskohl, PR
Ware, T
Vaia, RA
White, TJ
Reich, GW
Joo, JJ
AF Fuchi, Kazuko
Buskohl, Philip R.
Ware, Taylor
Vaia, Richard A.
White, Timothy J.
Reich, Gregory W.
Joo, James J.
GP ASME
TI INVERSE DESIGN OF LCN FILMS FOR ORIGAMI APPLICATIONS USING TOPOLOGY
OPTIMIZATION
SO PROCEEDINGS OF THE ASME CONFERENCE ON SMART MATERIALS, ADAPTIVE
STRUCTURES AND INTELLIGENT SYSTEMS, 2014, VOL 1
LA English
DT Proceedings Paper
CT 7th Annual ASME Conference on Smart Materials, Adaptive Structures and
Intelligent Systems (SMASIS)
CY SEP 08-10, 2014
CL Newport, RI
SP ASME, Aerospace Div
AB Liquid crystal polymer networks (LCNs) have unique advantages as potential constituents of origami-based smart materials due to their reversible actuations and availability of fabrication techniques to create complex strain fields. Although identifying functional designs is crucial in making use of this technology, conventional approaches have largely consisted of trial-and-error experimentation. We introduce an inverse design procedure based on a topology optimization method to map out an LCN pattern with a desired spontaneous strain field to achieve prescribed shapes. In this study, we focus on a target deformation of a film to create an improved hinge to be integrated into an origami structure. Our preliminary results indicate the potential of using computational tools to determine what designs yield desired functionalities and how to best pattern LCN films to achieve them.
C1 [Fuchi, Kazuko; Reich, Gregory W.; Joo, James J.] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
[Buskohl, Philip R.; Ware, Taylor; Vaia, Richard A.; White, Timothy J.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Fuchi, Kazuko] Universal Technol Corp, Dayton, OH 45432 USA.
[Buskohl, Philip R.] Universal Energy Syst Inc, Dayton, OH 45432 USA.
[Ware, Taylor] Azimuth Corp, Dayton, OH 45432 USA.
RP Fuchi, K (reprint author), Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
EM james.joo.1@us.af.mil
NR 23
TC 0
Z9 0
U1 0
U2 3
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-4614-8
PY 2014
AR V001T01A011
PG 7
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA BD4NY
UT WOS:000360948000011
ER
PT S
AU Shastry, MC
Narayanan, RM
Rangaswamy, M
AF Shastry, Mahesh C.
Narayanan, Ram M.
Rangaswamy, Muralidhar
GP IEEE
TI Compressive Noise Radar for Urban Sensing
SO 2014 IEEE 8TH SENSOR ARRAY AND MULTICHANNEL SIGNAL PROCESSING WORKSHOP
(SAM)
SE Proceedings of the IEEE Sensor Array and Multichannel Signal Processing
Workshop
LA English
DT Proceedings Paper
CT 8th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM)
CY JUN 22-25, 2014
CL A Coruna, SPAIN
SP IEEE
ID MATRICES
AB Ultra-wideband (UWB) noise-like transmit waveforms are ideally suited for implementing compressive radar range-profile imaging systems. Due to useful properties such as robustness to interference, simplicity of hardware design, and high range resolution, UWB noise radar has been successfully applied to urban-sensing scenarios. Compressive noise radar systems can achieve resolutions comparable to conventional systems at lower sampling rates, thus enabling super-resolution in radar imaging. In this paper, compressive noise radar imaging is experimentally shown to be feasible for urban sensing applications. S-band through-the-wall imaging results demonstrate the feasibility of using compressive noise radar for sensing obscured targets of interest in urban scenarios.
C1 [Shastry, Mahesh C.] 3M Co, Corp Res Lab, St Paul, MN 55144 USA.
[Narayanan, Ram M.] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA.
[Rangaswamy, Muralidhar] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Rangaswamy, Muralidhar] Purdue Univ, W Lafayette, IN 47907 USA.
RP Shastry, MC (reprint author), 3M Co, Corp Res Lab, St Paul, MN 55144 USA.
EM mahesh.shastry@ieee.org; rnarayanan@engr.psu.edu;
muralidhar.rangaswamy@us.af.mil
NR 13
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1551-2282
BN 978-1-4799-1481-4
J9 PR IEEE SEN ARRAY
PY 2014
BP 485
EP 488
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA BD3XD
UT WOS:000360273100122
ER
PT J
AU Zhdanov, BV
Knize, RJ
AF Zhdanov, B. V.
Knize, Randall J.
GP IEEE
TI Alkali vapor lasers: history, current state and perspectives
SO 2014 INTERNATIONAL CONFERENCE LASER OPTICS
LA English
DT Proceedings Paper
CT International Conference on Laser Optics
CY JUN 30-JUL 04, 2014
CL St Petersburg, RUSSIA
DE alkali lasers; DPAL; diode pump; high power lasers
AB This paper presents a short historical review of optically pumped alkali laser research and development and analysis of the most important achievements and existing problems in Diode Pumped Alkali Laser development and scaling to high power.
C1 [Zhdanov, B. V.; Knize, Randall J.] US Air Force Acad, Laser & Opt Res Ctr, Colorado Springs, CO 80840 USA.
RP Zhdanov, BV (reprint author), US Air Force Acad, Laser & Opt Res Ctr, Colorado Springs, CO 80840 USA.
EM boris.zhdanov.ctr@usafa.edu
NR 12
TC 0
Z9 0
U1 2
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
PY 2014
PG 1
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD4CT
UT WOS:000360494300060
ER
PT S
AU Carroll, M
Morton, Y
Vinande, E
AF Carroll, Mark
Morton, Yu (Jade)
Vinande, Eric
GP IEEE
TI Triple Frequency GPS Signal Tracking During Strong Ionospheric
Scintillations over Ascension Island
SO 2014 IEEE/ION POSITION, LOCATION AND NAVIGATION SYMPOSIUM - PLANS 2014
SE IEEE-ION Position Location and Navigation Symposium
LA English
DT Proceedings Paper
CT IEEE/ION Position, Location and Navigation Symposium (PLANS)
CY MAY 05-08, 2014
CL Monterey, CA
SP IEEE AESS, ION
AB This paper presents software receiver processing results of GPS L1, L2C, and L5 signals undergoing strong ionosphere scintillation. The data used in this study were obtained from a multi- GNSS multi- band IF data collection system at Ascension Island in March 2013. Detailed signal processing algorithms and scintillation indices calculated from carrier tracking loop output such as S4 and 6o are presented and the results are compared with the output of a co- located Septentrio PolaRxS receiver.
C1 [Carroll, Mark; Morton, Yu (Jade)] Miami Univ, Elect & Comp Engn Dept, Oxford, OH 45056 USA.
[Vinande, Eric] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Carroll, M (reprint author), Miami Univ, Elect & Comp Engn Dept, Oxford, OH 45056 USA.
NR 18
TC 0
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2153-358X
BN 978-1-4799-3320-4
J9 IEEE POSITION LOCAT
PY 2014
BP 43
EP 49
PG 7
WC Automation & Control Systems; Engineering, Electrical & Electronic;
Remote Sensing; Telecommunications
SC Automation & Control Systems; Engineering; Remote Sensing;
Telecommunications
GA BD2XP
UT WOS:000359380700008
ER
PT B
AU Kreitzer, PJ
Hanchak, M
Byrd, L
AF Kreitzer, Paul J.
Hanchak, Michael
Byrd, Larry
GP ASME
TI FLOW REGIME IDENTIFICATION OF HORIZONTAL TWO PHASE REFRIGERANT R-134a
FLOW USING NEURAL NETWORKS
SO PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS
AND EXPOSITION, 2013, VOL 7B
LA English
DT Proceedings Paper
CT ASME International Mechanical Engineering Congress and Exposition
(IMECE2013)
CY NOV 15-21, 2013
CL San Diego, CA
SP ASME
ID MICROCHANNELS
AB Flow regime Identification is an integral aspect of modeling two phase flows as most pressure drop and heat transfer correlations rely on a priori knowledge of the flow regime for accurate system predictions. In the current research, two phase R-134a flow is studied in a 7mm adiabatic horizontal tube over a mass flux range of 100-400 kg/m(2)s between 550-750 kPa. Electric Capacitance Tomography results for 196 test points were analyzed using statistical methods and neural networks. This data provided repeatable normalized permittivity ratio signatures based on the flow distributions. The first four temporal moments from the mean scaled permittivity data were utilized as input variables. Results showed that only 80 percent of flow regimes could be correctly identified using seven flow regime classifications. However reducing to five more commonly used regimes resulted in an improvement to 99 percent of the flow regimes correctly identified. Both methods of neural network training resulted in errors that were off by mostly one flow regime classification. Further analysis shows that transition cases can oscillate between two separate flow regimes at the same time.
C1 [Kreitzer, Paul J.] UES Inc, Aerosp Power & Prop Technol Div, Dayton, OH 45432 USA.
[Hanchak, Michael] Univ Dayton Res Inst, Modeling & Simulat Grp, Dayton, OH 45469 USA.
[Byrd, Larry] US Air Force Res Lab, AFRL RZPS, Wright Patterson AFB, OH 45433 USA.
RP Kreitzer, PJ (reprint author), UES Inc, Aerosp Power & Prop Technol Div, Dayton, OH 45432 USA.
EM Paul.kreitzer.ctr@wpafb.af.mil; Michael.hanchak.ctr@wpafb.af.mil;
Larry.byrd@wpafb.af.mil
NR 15
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-5632-1
PY 2014
AR V07BT08A059
PG 9
WC Engineering, Mechanical
SC Engineering
GA BD3NW
UT WOS:000359960200059
ER
PT B
AU Hanchak, MS
Vangsness, MD
Gheorghiu, N
Ervin, JS
Byrd, LW
Jones, JG
AF Hanchak, Michael S.
Vangsness, Marlin D.
Gheorghiu, Nadina
Ervin, Jamie S.
Byrd, Larry W.
Jones, John G.
GP ASME
TI THIN FILM EVAPORATION MODEL WITH RETARDED VAN DER WAALS INTERACTON
SO PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS
AND EXPOSITION, 2013, VOL 8C
LA English
DT Proceedings Paper
CT ASME International Mechanical Engineering Congress and Exposition
(IMECE2013)
CY NOV 15-21, 2013
CL San Diego, CA
SP ASME
ID EXTENDED MENISCUS
AB In phase change heat transfer equipment, three-phase contact regions exist that consist of a solid wall and the liquid and vapor phases of a working fluid. When the working fluid fully wets the solid wall, a microscopic thin film adjoining the meniscus is present called the adsorbed film. Upon heating, a non-uniform evaporative flux profile develops with a maximum value occurring within the transition between the adsorbed film and the intrinsic meniscus. It is important to study the heat transfer characteristics of this region to gain better fundamental understanding and useful design principles. The adsorbed film occurs when the driving potential for evaporation is opposed by the presence of intermolecular forces, represented analytically by the disjoining pressure, which acts to thicken a wetting film. The model presented includes lubrication theory of the liquid flow within the film, heat conduction across the film from the heated wall to the liquid-vapor interface, kinetic theory evaporation from the interface to the vapor phase, and disjoining pressure based on a retarded van der Waals interaction. The retarded van der Waals interaction is derived from Hamaker theory, the summation of retarded pair potentials for all molecules for a given geometry. When combined, the governing equations form a third-order, nonlinear differential equation for the film thickness versus distance, which is solved numerically using iteration of the initial film curvature in order to match the far-field curvature of the meniscus. Also, iteration is required at each length step to determine the liquid-vapor interface temperature. Useful outputs of the model include the liquid-vapor interface temperature and the evaporative mass flux profile. The model is calibrated to in-house experiments that employ an axisymmetric capillary feeder to provide a thin film of n-octane onto a substrate of silicon, where the gas phase is air saturated with vapor. The film thickness versus radial distance is measured using reflectometry and interferometry.
C1 [Hanchak, Michael S.; Vangsness, Marlin D.; Ervin, Jamie S.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
[Gheorghiu, Nadina] Univ Technol Corp, Dayton, OH USA.
[Byrd, Larry W.; Jones, John G.] Air Force Res Lab, Wright Patterson AFB, OH USA.
RP Hanchak, MS (reprint author), Univ Dayton, Res Inst, Dayton, OH 45469 USA.
NR 19
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-5636-9
PY 2014
AR V08CT09A044
PG 9
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA BD3PZ
UT WOS:000360032800044
ER
PT B
AU Gordnier, RE
Demasi, L
AF Gordnier, Raymond E.
Demasi, Luciano
GP ASME
TI IMPLICIT LES SIMULATIONS OF A FLAPPING WING IN FORWARD FLIGHT
SO PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING,
2013, VOL 1A: SYMPOSIA
LA English
DT Proceedings Paper
CT ASME Fluids Engineering Division Summer Meeting
CY JUL 07-11, 2013
CL Incline Village, NV
SP ASME, Fluids Engn Div
AB Computations of an aspect ratio 3.5 flat plate wing in flapping forward flight are performed. A high-order implicit LES approach is employed to compute the mixed laminar/transitional/turbulent flowfields present for the low Reynolds number flows associated with micro air vehicles. The ILES approach is implemented by exploiting the properties of a well validated, robust, sixth-order Navier-Stokes solver. The analyzed kinematics are a flapping motion described by an anti-clockwise 8 cycle. A Reynolds number based on the freestream velocity of 1250 is prescribed. A detailed description of the dynamic vortex system engendered by the unsteady flapping motion is given and related to the development of lift and thrust during the flapping cycle. Effective angle of attack, which results from the wing motion, and its interplay with the aerodynamic angle of attack play a key role in determining the flow structure and forces produced.
C1 [Gordnier, Raymond E.] Aerosp Syst Directorate, Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Demasi, Luciano] San Diego State Univ, Dept Aerosp Engn, San Diego, CA 92182 USA.
RP Gordnier, RE (reprint author), Aerosp Syst Directorate, Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
EM raymond.gordnier@wpafb.af.mil; ldemsi@mail.sdsu.edu
NR 28
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-5554-6
PY 2014
AR V01AT09A006
PG 12
WC Engineering, Mechanical; Mechanics; Physics, Fluids & Plasmas
SC Engineering; Mechanics; Physics
GA BD2PE
UT WOS:000359029100065
ER
PT J
AU Donnellan, A
Bills, B
Green, JJ
Goullioud, R
Jones, S
Knight, R
Underhill, M
Goguen, J
De Jong, EM
Ansar, A
Hallet, B
Thompson, L
Scambos, T
Gardner, AS
Morin, P
Ekholm, J
AF Donnellan, Andrea
Bills, Bruce
Green, Joseph J.
Goullioud, Renaud
Jones, Susan
Knight, Russell
Underhill, Michael
Goguen, Jay
De Jong, Eric M.
Ansar, Adnan
Hallet, Bernard
Thompson, Lonnie
Scambos, Ted
Gardner, Alex S.
Morin, Paul
Ekholm, Jared
GP IEEE
TI Studying Mountain Glacier Processes Using a Staring Instrument
SO 2014 IEEE AEROSPACE CONFERENCE
LA English
DT Proceedings Paper
CT IEEE Aerospace Conference
CY MAR 01-08, 2014
CL Big Sky, MT
SP IEEE
AB Mountain glaciers around the globe are retreating rapidly, but the exact mechanisms causing the retreat are not well understood. Is warming of the atmosphere the key driver? What are the roles of changes in surface albedo due to contaminants and snow optical grain size and surface roughness? Improved understanding of the response of mountain glaciers to global and environmental change is key to answering these questions. A staring instrument that provides measurements from multiple viewing and illumination angles enables simultaneous measurement of 3D surface structure, including texture, material characteristics, and albedo. Such measurements make it possible to determine melt due to absorbed solar energy separately from melt due to other sources. The International Space Station (ISS) provides a possible host platform for a staring instrument that could access all tropical and most temperate mountain glaciers. The non-sun-synchronous orbit enables varying solar illumination angles.
C1 [Donnellan, Andrea; Bills, Bruce; Green, Joseph J.; Goullioud, Renaud; Jones, Susan; Knight, Russell; Underhill, Michael; Goguen, Jay; De Jong, Eric M.; Ansar, Adnan] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Hallet, Bernard] Univ Washington, Quaternary Res Ctr, Seattle, WA 98195 USA.
[Thompson, Lonnie] Ohio State Univ, Byrd Polar Res Ctr, Columbus, OH 43210 USA.
[Scambos, Ted] Univ Colorado, Natl Snow & Ice Data Ctr, Boulder, CO 80309 USA.
[Gardner, Alex S.] Clark Univ, Grad Sch Geog, Worcester, MA 01610 USA.
[Morin, Paul] Univ Minnesota, Polar Geosci Ctr, St Paul, MN 55108 USA.
[Ekholm, Jared] Air Force Res Lab, Informat Directorate, Cyber Integrat & Transit Branch, Rome, NY USA.
RP Donnellan, A (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA.
EM Andrea.Donnellan@jpl.nasa.gov; Bruce.Bills@jpl.nasa.gov;
Joseph.J.Green@jpl.nasa.gov; Renaud.Goullioud@jpl.nasa.gov;
Susan.K.Jones@jpl.nasa.gov; Russell.L.Knight@jpl.nasa.gov;
Michael.L.Underhill@jpl.nasa.gov; Jay.Goguen@jpl.nasa.gov;
Eric.M.DeJong@jpl.nasa.gov; Adnan.Ansar@jpl.nasa.gov;
hallet@u.washington.edu; thompson.3@osu.edu; teds@nsidc.org;
agardner@clarku.edu; lpaul@umn.edu; jared.ekholm@us.af.mil
NR 13
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1622-1
PY 2014
PG 17
WC Engineering, Aerospace; Engineering, Electrical & Electronic
SC Engineering
GA BC8RQ
UT WOS:000356039101059
ER
PT J
AU Ellis, G
Graven, P
Young, Q
Christensen, J
AF Ellis, Garrett
Graven, Paul
Young, Quinn
Christensen, Jacob
GP IEEE
TI Standard Network Adapter for Payloads (SNAP)
SO 2014 IEEE AEROSPACE CONFERENCE
LA English
DT Proceedings Paper
CT IEEE Aerospace Conference
CY MAR 01-08, 2014
CL Big Sky, MT
SP IEEE
AB Given today's challenging budget environment for the Department of Defense, the National Security Space Enterprise is seeking unique and affordable ways to gain access to space. An emerging solution is aimed at addressing the fiscal challenges using commercially hosted payloads for military missions. With the success of Commercially Hosted Infrared Payload (CHIRP) in 2011, the United States Air Force is continuing to pursue new and innovative concepts and technologies to ensure hosted payloads remain an affordable avenue for resilient future space architectures. A specific enabling concept is a Modular, Open Networked Architecture (MONA) which is an outgrowth of two Department of Defense policy documents: the DODI 5000.02 and DoDD 8320.02. An emerging technology demonstration of MONA for the Hosted Payload Office is the Standard Network Adapter for Payloads (SNAP).
In conjunction with the Space Dynamics Laboratory at Utah State University, the Space & Missiles Systems Center's Development Planning Directorate has demonstrated an adapter between diverse hosted payloads and a spacecraft bus. The demonstration was successfully conducted on 20 November 2013 utilizing the ORS MSV testbed located at the Northrop Grumman Corporation in Redondo Beach, California. The SNAP ground demonstration showcased the ability to interface multiple payload types with multiple spacecraft vehicles.
A specific outcome of the ground demonstration is a flight-ready version of SNAP software that can be utilized for a follow-on on-orbit demonstration. The SNAP software supports both Linux and VxWorks Operating Systems. The demonstration entailed three different simulated hosted payloads and quantified the integration time for each payload. The SNAP unit demonstrated that a payload with a Mil-Std-1553, RS-422, or SpaceWire connection can successfully, rapidly interface with a spacecraft that provides one of these connections.
One critical component for the hosting of future military missions is resolving the information assurance aspect. For the purposes of SNAP demonstration, the security layer was not incorporated into the project but must be addressed for operational viability in future hosted DoD missions. Demonstration of the SNAP capability has validated the potential utility of adopting a MONA approach for a hosted payload adapter, and supports the notion that broader adoption of MONA for space systems development could reap significant benefits.
C1 [Ellis, Garrett] US Air Force, Los Angeles, CA 90245 USA.
[Graven, Paul] Cateni Inc, Redondo Beach, CA 90278 USA.
[Young, Quinn; Christensen, Jacob] Space Dynam Lab, North Logan, UT 84341 USA.
RP Ellis, G (reprint author), US Air Force, Los Angeles, CA 90245 USA.
EM garrett.ellis.4@us.af.mil; paul@cateni.com; quinn.young@sdl.usu.edu;
jacob.christensen@sdl.usu.edu
NR 1
TC 0
Z9 0
U1 2
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1622-1
PY 2014
PG 8
WC Engineering, Aerospace; Engineering, Electrical & Electronic
SC Engineering
GA BC8RQ
UT WOS:000356039103026
ER
PT J
AU Ellis, T
Holmes, R
Werth, M
AF Ellis, Troy
Holmes, Richard
Werth, Michael
GP IEEE
TI Adaptive Optics Beacon Mutual Coherence Function Modeling and Assessment
with Diverse Conditions
SO 2014 IEEE AEROSPACE CONFERENCE
LA English
DT Proceedings Paper
CT IEEE Aerospace Conference
CY MAR 01-08, 2014
CL Big Sky, MT
SP IEEE
AB Presented here is a comparison of partially coherent adaptive optics (AO) beacons simulated with analytical Gaussian-Schell Model (GSM) sources, and extended incoherent AO beacons simulated with more conventional techniques. An analysis of Mutual Coherence Functions (MCFs) is performed with a variety of simulation conditions generated with a single software package developed under the AO Beacon effort. Wavefront sensor and AO beacon performance are compared for both types of beacons under various scenarios, including ground-space and air-air propagations with different types of wavefront sensors in both open-loop and closed-loop operation of the AO system.
C1 [Ellis, Troy] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
[Holmes, Richard] Boeing LTS MSSC, Albuquerque, NM 87109 USA.
[Werth, Michael] Boeing LTS MSSC, Kihei, HI 96753 USA.
RP Ellis, T (reprint author), Air Force Res Lab, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA.
EM Troy.Ellis@us.af.mil; Richard.B.Holmes@boeing.com;
Michael.P.Werth@boeing.com
NR 3
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1622-1
PY 2014
PG 12
WC Engineering, Aerospace; Engineering, Electrical & Electronic
SC Engineering
GA BC8RQ
UT WOS:000356039103027
ER
PT J
AU Jia, B
Blasch, E
Pham, KD
Shen, D
Wang, ZH
Chen, GS
AF Jia, Bin
Blasch, Erik
Pham, Khanh D.
Shen, Dan
Wang, Zhonghai
Chen, Genshe
GP IEEE
TI Cooperative Space Object Tracking via Multiple Space-based Visible
Sensors with Communication Loss
SO 2014 IEEE AEROSPACE CONFERENCE
LA English
DT Proceedings Paper
CT IEEE Aerospace Conference
CY MAR 01-08, 2014
CL Big Sky, MT
SP IEEE
AB Accurate and timely space object tracking is important for space surveillance missions. Among various sensors such as ground-based radars, a space-based visible (SBV) sensor has been considered as an important sensing technology to achieve the stringent goals of space surveillance due to its high-accuracy angle measurements, faster observation rates, and large sensing coverage. To achieve certain tracking accuracy requirements, multiple sensors and cooperative tracking algorithms are often used. However, communication loss is often ignored although it commonly exists in communications of different sensor applications. In this paper, a space object tracking separated extended information filter (SEIF) algorithm uses multiple space-based visible (SBV) sensors to track targets. The algorithm is evaluated through implementation in a space object tracking scenario supported by the NASA General Mission Analysis Tool (GMAT). The root mean square error is used to compare the performance of the proposed algorithm and classical algorithms, such as the EIF. The simulation results indicate that the performance of the SEIF is better than that of the EIF when there is a communications loss between different sensors.
C1 [Jia, Bin; Shen, Dan; Wang, Zhonghai; Chen, Genshe] Intelligent Fus Technol Inc, Germantown, MD 20876 USA.
[Blasch, Erik] Air Force Res Lab, Informat Directorate, Rome, NY 13441 USA.
[Pham, Khanh D.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Jia, B (reprint author), Intelligent Fus Technol Inc, 20271 Goldenrod Lane,Suite 2066, Germantown, MD 20876 USA.
EM bin.jia@intefusiontech.com; erik.blasch.1@us.af.mil;
AFRL.RVSV@kirtland.af.mi; dshen@intefusiontech.com;
zwang@intefusiontech.com; gchen@intefusiontech.com
NR 18
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1622-1
PY 2014
PG 8
WC Engineering, Aerospace; Engineering, Electrical & Electronic
SC Engineering
GA BC8RQ
UT WOS:000356039102064
ER
PT J
AU Lovelly, TM
Bryan, D
Cheng, K
Kreynin, R
George, AD
Gordon-Ross, A
Mounce, G
AF Lovelly, Tyler M.
Bryan, Donavon
Cheng, Kevin
Kreynin, Rachel
George, Alan D.
Gordon-Ross, Ann
Mounce, Gabriel
GP IEEE
TI A Framework to Analyze Processor Architectures for Next-Generation
On-Board Space Computing
SO 2014 IEEE AEROSPACE CONFERENCE
LA English
DT Proceedings Paper
CT IEEE Aerospace Conference
CY MAR 01-08, 2014
CL Big Sky, MT
SP IEEE
AB Due to harsh and inaccessible operating environments, space computing presents many unique challenges with respect to stringent power, reliability, and programmability constraints that limit on-board processing performance and mission capabilities. However, the increasing need for real-time sensor and autonomous processing, coupled with limited communication bandwidth with ground stations, are increasing the demand for high-performance, on-board computing for next-generation space missions. Since currently available radiation-hardened space processors cannot satisfy this growing demand, research into various processor architectures is required to ensure that potential new space processors are based on architectures that will best meet the computing needs of space missions. To enable this research, we present a novel framework to analyze potential processor architectures for space computing. By using this framework to analyze a wide range of existing radiation-hardened and emerging commercial processors, tradeoffs between potential space computing architectures can be determined and considered when designing new space processors or when selecting commercial architectures for radiation hardening and use in space missions. We demonstrate the ability of the framework to generate data for various architectures in terms of performance and power, and analyze this data for initial insights into the effects of processor architectures on space mission capabilities. The framework provides a foundation for the analysis of a broad and diverse set of processor architectures for potential use in next-generation, on-board space computing.
C1 [Lovelly, Tyler M.; Bryan, Donavon; Cheng, Kevin; Kreynin, Rachel; George, Alan D.; Gordon-Ross, Ann] Univ Florida, Dept Elect & Comp Engn, NSF Ctr High Performance Reconfigurable Comp CHRE, Gainesville, FL 32611 USA.
[Mounce, Gabriel] Air Force Res Lab, Space Vehicles Directorate, Albuquerque, NM USA.
RP Lovelly, TM (reprint author), Univ Florida, Dept Elect & Comp Engn, NSF Ctr High Performance Reconfigurable Comp CHRE, Gainesville, FL 32611 USA.
EM lovelly@chrec.org; donavon@chrec.org; cheng@chrec.org;
kreynin@chrec.org; george@chrec.org; ann@chrec.org;
gabriel.mounce2@kirtland.af.mil
NR 29
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1622-1
PY 2014
PG 10
WC Engineering, Aerospace; Engineering, Electrical & Electronic
SC Engineering
GA BC8RQ
UT WOS:000356039102076
ER
PT J
AU Nakatani, S
Sands, T
AF Nakatani, Scott
Sands, Timothy
GP IEEE
TI Simulation of Spacecraft Damage Tolerance and Adaptive Controls
SO 2014 IEEE AEROSPACE CONFERENCE
LA English
DT Proceedings Paper
CT IEEE Aerospace Conference
CY MAR 01-08, 2014
CL Big Sky, MT
SP IEEE
ID DEBRIS
AB The nature of adaptive controls, or controls for unpredictable systems, lends itself naturally to the concept of damage tolerant controls in high performing systems, such as aircraft and spacecraft. Recent technical demonstrations of damage tolerant aircraft prove the concept of adaptive controls in an operational environment. Research covered by this paper expands on the topic by discussing the application of adaptive controls to spacecraft and theory behind simulating damage tolerant control implementation. Simulation is then used to demonstrate the stability of adaptive controls when experiencing sudden mass loss and rapid changes in inertia.
C1 [Nakatani, Scott] 1 Air & Space Test Squadron, Vandenberg AFB, CA 93437 USA.
[Sands, Timothy] Air Force Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Nakatani, S (reprint author), 1 Air & Space Test Squadron, 806 13th St, Vandenberg AFB, CA 93437 USA.
EM scott.nakatani.1@us.af.mil; tasands@nps.edu
NR 40
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1622-1
PY 2014
PG 16
WC Engineering, Aerospace; Engineering, Electrical & Electronic
SC Engineering
GA BC8RQ
UT WOS:000356039101035
ER
PT J
AU Pellizzari, CJ
Spencer, MF
Calef, B
Bos, J
Williams, S
Senft, DC
Williams, SE
AF Pellizzari, Casey J.
Spencer, Mark F.
Calef, Brandoch
Bos, Jeremy
Williams, Skip
Senft, Daniel C.
Williams, Stacie E.
GP IEEE
TI Performance Characterization of Phase Gradient Autofocus for Inverse
Synthetic Aperture LADAR
SO 2014 IEEE AEROSPACE CONFERENCE
LA English
DT Proceedings Paper
CT IEEE Aerospace Conference
CY MAR 01-08, 2014
CL Big Sky, MT
SP IEEE
ID RADAR AUTOFOCUS; SAR IMAGERY; RESOLUTION; ALGORITHM; ERRORS; PGA
AB Phase Gradient Autofocus (PGA) is an effective algorithm for estimating and removing piston-phase errors from spotlight-mode synthetic aperture radar (SAR) data. For target scenes dominated by a point source, the algorithm has been shown to be optimal in the sense that it approaches the Cramer-Rao bound for carrier-to-noise ratios (CNRs) as low as -5 dB. In this paper, we explore PGA's effectiveness against ground-based inverse synthetic aperture LADAR (ISAL) observations of spacecraft, where the target characteristics and phase errors are quite different than in the SAR case. At optical wavelengths, the power spectrum of the piston-phase errors will be dominated less by platform motion and more by atmospheric variations. In addition, space objects will have fewer range-resolution cells across them than would a typical extended SAR scene. This research characterizes the performance limitations of PGA for an ISAL system as a function of CNR and the number of range-resolution cells across the scene. A high-fidelity wave-optics simulation is used to generate representative test data for input to the PGA algorithm. Emphasis is placed on finding the lower limits of performance for which image reconstruction is possible.
C1 [Pellizzari, Casey J.] Air Force Res Lab, Directed Energy Directorate, Kihei, HI 96753 USA.
[Spencer, Mark F.] Air Force Inst Technol, Dayton, OH 45433 USA.
[Calef, Brandoch] Boeing LTS, Kihei, HI 96753 USA.
[Bos, Jeremy; Williams, Skip; Williams, Stacie E.] Air Force Res Lab, Kihei, HI 96753 USA.
[Senft, Daniel C.] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
RP Pellizzari, CJ (reprint author), Air Force Res Lab, Directed Energy Directorate, 535 Lipoa Pkwy,Suite 200, Kihei, HI 96753 USA.
NR 30
TC 0
Z9 0
U1 2
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1622-1
PY 2014
PG 11
WC Engineering, Aerospace; Engineering, Electrical & Electronic
SC Engineering
GA BC8RQ
UT WOS:000356039103085
ER
PT J
AU Wyman, J
Hyde, MW
AF Wyman, Jason
Hyde, Milo W.
GP IEEE
TI Detection and Correction of Stair Mode Across an Optical Phased Array
SO 2014 IEEE AEROSPACE CONFERENCE
LA English
DT Proceedings Paper
CT IEEE Aerospace Conference
CY MAR 01-08, 2014
CL Big Sky, MT
SP IEEE
ID AIRBORNE LASER
AB A conceptual system capable of detecting the occurrence of stair mode across an optical array has been developed and studied. This conceptual system utilizes a single camera, referred to as the stair mode imager, to image the irradiance pattern produced at the target. The collected image is then cross-correlated with a database of theoretical stair mode images to estimate the amount of stair mode across the array. Previous studies have been limited to computer simulations and are expanded here into hardware-based experimentation. These experiments further study the effects of stair mode and are aimed at validating previous simulation findings and further characterizing the ability and constraints of the stair mode imager.
C1 [Wyman, Jason; Hyde, Milo W.] US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Wyman, J (reprint author), US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
NR 10
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1622-1
PY 2014
PG 10
WC Engineering, Aerospace; Engineering, Electrical & Electronic
SC Engineering
GA BC8RQ
UT WOS:000356039102049
ER
PT J
AU Soloviev, A
Yang, C
Veth, M
Taylor, C
AF Soloviev, Andrey
Yang, Chun
Veth, Michael
Taylor, Clark
GP Inst Navigat
TI Assured Vision Aided Inertial Localization
SO PROCEEDINGS OF THE 27TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE
DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS 2014)
LA English
DT Proceedings Paper
CT 27th International Technical Meeting of the Satellite-Division of the
Institute-of-Navigation (ION GNSS)
CY SEP 08-12, 2014
CL Tampa, FL
SP Inst Navigat, Satellite Div
AB Imaging systems represent a popular approach for opportunistic navigation. While the literature tends to focus on developing new navigation observation techniques, or on improving accuracy, meeting the user's full navigation requirements usually depends on a combination of both accuracy and integrity. Compounding the issue is that these signals of opportunity typically have error statistics that are highly non-stationary, non-white, and non-Gaussian in nature. This can result in estimates that are overly optimistic and possibly divergent.
This paper develops a methodology of assured vision-aided estimation and validates its performance using simulation and experimental results. As a specific case study, the feasibility is demonstrated for Assured Vision-Aided Inertial Localization (AVAIL). AVAIL utilizes a batch-processing routine that adopts a multi-pose constrained estimation (MPCE) approach. The most difficult case of monocular vision (unknown depth) is considered, but the approaches presented herein can be readily extended to cases of stereo-vision.
C1 [Soloviev, Andrey; Veth, Michael] QuNav, Ft Walton Beach, FL 32547 USA.
[Yang, Chun] Sigtem Technol, San Mateo, CA USA.
[Taylor, Clark] US Air Force, Res Lab, Sensors Directorate, Washington, DC USA.
RP Soloviev, A (reprint author), QuNav, Ft Walton Beach, FL 32547 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU INST NAVIGATION
PI WASHINGTON
PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 USA
PY 2014
BP 2160
EP 2173
PG 14
WC Remote Sensing
SC Remote Sensing
GA BC9DO
UT WOS:000356331203010
ER
PT J
AU Veth, MJ
Soloviev, A
Yang, C
Taylor, C
AF Veth, M. J.
Soloviev, A.
Yang, C.
Taylor, C.
GP Inst Navigat
TI Robustified, Multi-epoch Stochastic Constraints for Outlier Detection
and Removal in Online Multi-sensor Inertial Navigation Systems
SO PROCEEDINGS OF THE 27TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE
DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS 2014)
LA English
DT Proceedings Paper
CT 27th International Technical Meeting of the Satellite-Division of the
Institute-of-Navigation (ION GNSS)
CY SEP 08-12, 2014
CL Tampa, FL
SP Inst Navigat, Satellite Div
AB Recent advances in sensor and signal processing technologies have fueled the development of a number of novel techniques for extracting navigation and targeting information using signals not normally considered for navigation. Some examples of these signals include, but are not limited to, magnetic fields, radio/cellular signals, video and image sequences, sonar, step/gait detection, and laser ranging measurements. Many techniques for integrating new types of observations have been demonstrated in the literature and have shown the ability to provide high-levels of accuracy in environments where Global Navigation Satellite System (GNSS) signals are unavailable. This accuracy potential has resulted in a great deal of interest for both military and civilian applications.
In this paper, a statistically-rigorous approach is presented to detect and remove outliers by leveraging observations over multiple epochs. The presence of non-Gaussian errors is implicitly assumed in the model and used to develop a robustified-Gauss-Newton statistical estimator. The robust cost function-based approach has the advantage of improved convergence over traditional gating techniques due to the convex nature of the statistical cost function. The estimation results are used to calculate a robustified Mahalanobis distance which is used to indicate statistical outliers. These outliers can then be removed or de-weighted prior to incorporation into a navigation algorithm.
While the technique is applicable for any feature-based navigation algorithm, an image-aided consumer-grade inertial navigation example is used to illustrate the performance. The algorithm was evaluated using two simulated scenarios: one representing indoor navigation in a hallway environment and one representing a flight scenario. For the indoor scenario, the algorithm demonstrated a probability of outlier detection of 99.78% with a probability of false alarm of 0.3%. Similar results were observed for the flight scenario.
C1 [Veth, M. J.; Soloviev, A.; Yang, C.] QuNav LLC, Ft Walton Beach, FL 32547 USA.
[Taylor, C.] US Air Force, Res Lab, Sensors Directorate, Washington, DC USA.
RP Veth, MJ (reprint author), QuNav LLC, Ft Walton Beach, FL 32547 USA.
EM michael.veth@vethresearch.com; soloviev@qunav.com; chunyang@sigtem.com;
clark.taylor.3@us.af.mil
NR 10
TC 1
Z9 1
U1 0
U2 0
PU INST NAVIGATION
PI WASHINGTON
PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 USA
PY 2014
BP 2212
EP 2219
PG 8
WC Remote Sensing
SC Remote Sensing
GA BC9DO
UT WOS:000356331203015
ER
PT J
AU Trunzo, A
Ramirez, R
Baldwin, J
AF Trunzo, Angelo
Ramirez, Robert
Baldwin, Jason
GP Inst Navigat
TI The UHARS Non-GPS Based Positioning System (NGBPS)
SO PROCEEDINGS OF THE 27TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE
DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS 2014)
LA English
DT Proceedings Paper
CT 27th International Technical Meeting of the Satellite-Division of the
Institute-of-Navigation (ION GNSS)
CY SEP 08-12, 2014
CL Tampa, FL
SP Inst Navigat, Satellite Div
AB Amid a growing concern about Global Positioning System (GPS) jamming in military areas of operation, testing GPS receivers and antenna systems in a GPSdenied environment is becoming increasingly important to Department of Defense (DoD) agencies. However, since GPS is often the "gold standard" position, navigation and time information that serves as a truth reference during field and flight testing, conducting tests in an area that has no GPS availability because of intense jamming makes it difficult to compare observed position and navigation data to a valid truth source. Moreover, to evaluate system performance with appropriate statistical significance, the reference system against which test results are measured needs to be significantly more accurate than the system under test. Therefore, when the system under test is GPS itself, this poses an interesting problem.
[GRAPHICS]
For more than a decade, the 746th Test Squadron (746 TS), also known as the Central Inertial and GPS Test Facility (CIGTF), has met this requirement by employing its CIGTF Reference System (CRS). The CRS (Figure 1) is a system of navigation sensors that evaluates combinations of its subsystem measurements in an extended Kalman filter/smoother algorithm to produce an optimal reference trajectory. Delivering sub-meter accuracy in non-GPS-jammed environments and meter-level accuracy in GPS-jammed environments, the CRS is arguably the most accurate reference system in the DoD. However, many future DoD weapons systems are projected to require tighter navigation accuracies in GPS-denied environments, and as these requirements improve, the reference system against which they are evaluated must improve accordingly. To meet these test and evaluation reference requirements in a GPS-denied environment, a new reference system is needed.
Answering this call, the 746 TS embarked on the development of the Ultra High Accuracy Reference System (UHARS), a next generation reference system that meets test and evaluation reference requirements for future navigation and guidance systems. UHARS consists of a rack-mounted, tightly integrated system of improved navigation sensors/subsystems, data acquisition system (DAS) and a new post-mission reference trajectory algorithm. The complete system will provide a significantly more accurate reference solution for future airborne and land-based test vehicles in navigation warfare environments where modernized and legacy GPS signals are jammed from friendly or hostile systems.
Achieving these accurate reference solutions requires a Non-GPS Based Positioning System (NGBPS) subsystem capable of operating and providing sub-meter position accuracy in a GPS-denied (jamming) environment. The NGBPS portion of the UHARS program employs a network of ground "Locatalite" transceivers and test vehicle receivers (also called "rovers") manufactured by the Locata Corporation. Although the NGBPS uses Locata's standard commercial LocataLites and rovers, meeting the demanding UHARS accuracy and distance requirements of better than 18 centimeters accuracy over a 30 mile range in a flight configuration necessitated custom transmit antennas, external signal amplification, custom navigational software for flight, as well as the addition of a centralized command and control (C2) capability.
Based on successful results of the technical demonstration at the White Sands Missile Range (WSMR) in October 2011 that prototyped the architecture in a real-world endto-end environment, the USAF proceeded to the NGBPS production and fielding phase. To this end, the 746th Test Squadron awarded two sole-source contracts to Locata Corporation and TMC Design Corporation, respectively. The Locata Corporation was contracted to provide production ground transceivers and rovers, navigation algorithms required for data analysis and subject matter expertise. The TMC Design Corporation, the Locata Technology Integrator (LTI) for this program, was contracted to develop the production hardware to house the Locata hardware, develop the command and control hardware and software, and field the production hardware at WSMR.
This paper details the NGBPS production effort to include an overview of the design, development and network integration.
C1 [Trunzo, Angelo] 746th Test Squadron, Holloman Afb, NM 88330 USA.
[Ramirez, Robert; Baldwin, Jason] TMC Design Corp, Las Cruces, NM USA.
RP Trunzo, A (reprint author), 746th Test Squadron, Holloman Afb, NM 88330 USA.
NR 14
TC 2
Z9 2
U1 0
U2 2
PU INST NAVIGATION
PI WASHINGTON
PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 USA
PY 2014
BP 3243
EP 3248
PG 6
WC Remote Sensing
SC Remote Sensing
GA BC9DO
UT WOS:000356331204034
ER
PT J
AU Lukishova, SG
Liapis, AC
Bissell, LJ
Gehring, GM
Boyd, RW
AF Lukishova, Svetlana G.
Liapis, Andreas C.
Bissell, Luke J.
Gehring, George M.
Boyd, Robert W.
TI Single-photon experiments with liquid crystals for quantum science and
quantum engineering applications
SO LIQUID CRYSTALS REVIEWS
LA English
DT Review
DE polarized single-photon source; antibunching; nanocrystal quantum dots;
nitrogen vacancy color centers in nanodiamonds; nematic; cholesteric
liquid crystals; Hong-Ou-Mandel interferometer; entangled photons;
quantum mechanical barrier tunneling time; double-prism structure;
frustrated total internal reflection
ID HIGH-POWER; DOT FLUORESCENCE; TUNNELING TIME; POLARIZATION; RESONANCE;
OPTICS; DYE; INTERFERENCE; NANOCRYSTALS; PERFORMANCE
AB We present here our results on using liquid crystals (LCs) in experiments with nonclassical light sources: (1) single-photon sources exhibiting antibunching (separation of all photons in time), which are key components for secure quantum communication systems and (2) entangled photon source with photons exhibiting quantum interference in a Hong-Ou-Mandel interferometer. In the first part, both nematic and cholesteric liquid crystal (CLC) hosts were used to create definite linear or circular polarization of antibunched photons emitted by different types of single emitters (dye molecules, nanocrystal quantum dots (NQDs), nanodiamonds with color centers, etc.). If the photon has unknown polarization, filtering it through a polarizer to produce the desired polarization for quantum key distribution with bits based on polarization states of photons will reduce by half the efficiency of a quantum cryptography system. In the first part, we also provide our results on observation of a circular polarized microcavity resonance in NQD fluorescence in a 1-D chiral photonic bandgap CLC microcavity. In the second part of this paper with indistinguishable, time-entangled photons, we demonstrate our experimental results on simulating quantum mechanical barrier tunneling phenomena. A Hong-Ou-Mandel dip (quantum interference effect) is shifted when a phase change was introduced on the way of one of entangled photons in pair (one arm of the interferometer) by inserting in this arm an electrically controlled planar-aligned nematic LC layer between two prisms in the conditions close to a frustrated total internal reflection. By applying different AC-voltages to the planar-aligned nematic layer and changing its refractive index, we can obtain various conditions for incident photon propagation-from total reflection to total transmission. Measuring changes of tunneling times of photon through this structure with femtosecond resolution permitted us to answer some unresolved questions in quantum mechanical barrier tunneling phenomena.
C1 [Lukishova, Svetlana G.; Liapis, Andreas C.; Gehring, George M.; Boyd, Robert W.] Univ Rochester, Inst Opt, Rochester, NY 14627 USA.
[Bissell, Luke J.] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Boyd, Robert W.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA.
[Boyd, Robert W.] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada.
[Boyd, Robert W.] Univ Ottawa, Sch Elect Engn & Comp Sci, Ottawa, ON K1N 6N5, Canada.
RP Lukishova, SG (reprint author), Univ Rochester, Inst Opt, Rochester, NY 14627 USA.
EM sluk@lle.rochester.edu
OI Liapis, Andreas/0000-0001-6810-3354
FU US ARO [DAAD19-02-1-0285]; NSF [ECS-0420888, DUE-0633621, DUE-0920500,
EEC-1343673]; US Defense Threat Reduction Agency-Joint Science and
Technology Office for Chemical and Biological Defense
[HDTRA1-10-1-0025]; Canada Excellence Research Chairs Program; Air-Force
SMART Fellowship
FX We acknowledge the assistance of A. Schmid, K. Marshall, J. Winkler, R.
Knox, P. Freivald, and C. Supranowitz in some reported experiments and
discussions of results with L. Novotny, A. Lieb, and C. Stroud. We used
confocal microscope imaging software written by A. Lieb. Some liquid
crystal materials were prepared by a S.-H. Chen's group and some single
emitters - by T. Krauss' group. Some experiments were carried out at the
liquid-crystal clean room and nanometrology facilities at the Laboratory
for Laser Energetics, University of Rochester. S.G.L. was supported by
the US ARO (Grant No DAAD19-02-1-0285), NSF (Grants No. ECS-0420888,
DUE-0633621, DUE-0920500, EEC-1343673). R.W.B. was supported for this
work by the US Defense Threat Reduction Agency-Joint Science and
Technology Office for Chemical and Biological Defense (Grant No.
HDTRA1-10-1-0025) and by the Canada Excellence Research Chairs Program.
L.J.B. was supported by the Air-Force SMART Fellowship.
NR 83
TC 2
Z9 2
U1 6
U2 16
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 2168-0396
EI 2168-0418
J9 LIQ CRYST REV
JI Liq. Cryst. Rev.
PY 2014
VL 2
IS 2
BP 111
EP 129
DI 10.1080/21680396.2014.954015
PG 19
WC Chemistry, Physical; Crystallography; Materials Science,
Multidisciplinary
SC Chemistry; Crystallography; Materials Science
GA CM5OB
UT WOS:000357736500002
ER
PT S
AU Al Tameemi, OA
Chatterjee, M
Kwiat, K
AF Al Tameemi, Osama Abbas
Chatterjee, Mainak
Kwiat, Kevin
GP IEEE
TI Vector Quantization based QoS Evaluation in Cognitive Radio Networks
SO 2014 23RD WIRELESS AND OPTICAL COMMUNICATION CONFERENCE (WOCC)
SE Wireless and Optical Communication Conference
LA English
DT Proceedings Paper
CT 23rd Wireless and Optical Communication Conference (WOCC)
CY MAY 09-10, 2014
CL Newark, NJ
ID OPTIMAL POWER-CONTROL
AB In this paper, we attempt to characterize the QoS that secondary users can expect in a cognitive radio network. Using power control as a black-box, we propose a method that can help us evaluate the QoS for any given power vector based on past observations. To that end, we first define a k-dimensional QoS space where each point in that space characterizes the expected QoS. We show how the operating condition of the system maps to a point in the QoS space, the quality of which is given by the corresponding QoS index. To deal with the real-valued QoS space, we use vector quantization to partition the space into finite number of regions each of which is represented by one QoS index. We argue that any operating condition of the system can be mapped to one of the pre-computed QoS indices using a simple look-up in 0(log n) time-thus avoiding any cumbersome computation for QoS evaluation. Using simulations, we illustrate how a 2-dimensional QoS space can be constructed. We choose capacity as the QoS metric and show what the expected capacity would be for a given power vector.
C1 [Al Tameemi, Osama Abbas; Chatterjee, Mainak] Univ Cent Florida, Elect Engn & Comp Sci, Orlando, FL 32816 USA.
[Kwiat, Kevin] Air Force Res Lab, Informat Directorate, Wright Patterson AFB, OH USA.
RP Al Tameemi, OA (reprint author), Univ Cent Florida, Elect Engn & Comp Sci, Orlando, FL 32816 USA.
EM osama@eecs.ucf.edu; mainak@eecs.ucf.edu; kevin.kwiat@us.af.mil
NR 13
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2379-1268
BN 978-1-4799-5249-6
J9 WIRELESS OPTIC COMM
PY 2014
PG 6
WC Computer Science, Hardware & Architecture; Optics; Telecommunications
SC Computer Science; Optics; Telecommunications
GA BD0AI
UT WOS:000357018500013
ER
PT J
AU Bertha, C
AF Bertha, Carlos
GP IEEE
TI Ethics and Military Engineering Operations
SO 2014 IEEE INTERNATIONAL SYMPOSIUM ON ETHICS IN SCIENCE, TECHNOLOGY AND
ENGINEERING
LA English
DT Proceedings Paper
CT IEEE International Symposium on Ethics in Science, Technology and
Engineering
CY MAY 23-24, 2014
CL Chicago, IL
SP IEEE
DE engineering ethics; military ethics; military engineering; just war
theory
AB Imagine the following three-variable Venn diagram: One circle represents the field of applied and professional ethics, a second circle represents military operations, and the third circle represents the practice of engineering, particularly construction projects. We can, without much difficulty, picture what the overlapping areas between any two circles refer to: engineering ethics, military ethics and military engineering. What I would like to address in this paper is the area common to all three circles: is there room for a unique field of ethics called "military engineering ethics"? I contend that there is, and in this presentation I propose to sketch out why and what that might look like.
C1 [Bertha, Carlos] US Air Force Acad, Dept Philosophy, Colorado Springs, CO 80840 USA.
[Bertha, Carlos] US Army Reserves, Ft Bragg, NC USA.
RP Bertha, C (reprint author), US Air Force Acad, Dept Philosophy, Colorado Springs, CO 80840 USA.
EM carl.bertha@usafa.edu
NR 4
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-4992-2
PY 2014
PG 4
WC Computer Science, Interdisciplinary Applications; Ethics; History &
Philosophy Of Science
SC Computer Science; Social Sciences - Other Topics; History & Philosophy
of Science
GA BC9DX
UT WOS:000356362200007
ER
PT S
AU Claflin, B
Kiefer, AM
Beeler, RT
Fang, ZQ
Grzybowski, G
AF Claflin, B.
Kiefer, A. M.
Beeler, R. T.
Fang, Z. -Q.
Grzybowski, G.
BE Harame, D
Caymax, M
Heyns, M
Masini, G
Miyazaki, S
Niu, G
Reznicek, A
Saraswat, K
Tillack, B
Vincent, B
Yeo, YC
Ogura, A
Murota, J
TI Characterization of Ge1-x-ySixSny Ternary Alloys - Comparison of UHV-CVD
and Gas Source MBE Growth
SO SIGE, GE, AND RELATED COMPOUNDS 6: MATERIALS, PROCESSING, AND DEVICES
SE ECS Transactions
LA English
DT Proceedings Paper
CT 6th SiGe, Ge, and Related Compounds - Materials, Processing and Devices
Symposium held at the 2014 Joint International 226th
Electrochemical-Society
CY OCT 05-10, 2014
CL Cancun, MEXICO
SP Electrochem Soc, Electron & Photon Div, IBM, Appl Mat Corp, ASM, LUXTERA
AB Electrical, structural, and materials characteristics are reported for Ge1-x-ySixSny ternary alloys grown by UHV-CVD and gas source MBE. Composition and local bonding configuration are determined by XPS. Crystalline structural characteristics and relaxation of film strain were measured with X-ray diffraction. Temperature-dependent Hall-effect measurements show highly conductive layers although care must be exercised to account for parallel conduction through the substrate. Deep level transient spectroscopy shows two electron traps at low temperature in Ge1-x-ySixSny p-i-n diodes grown by UHV-CVD while samples grown by GS-MBE show only one, 10x weaker trap. The dark currents for both UHV-CVD and GS-MBE diodes exhibit an activation energy of E-a=0.40 eV at high temperature while the reverse bias leakage current in these films increases with increasing Sn content.
C1 [Claflin, B.; Kiefer, A. M.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
[Beeler, R. T.] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA.
[Beeler, R. T.] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
[Fang, Z. -Q.] Wright State Univ, Semicond Res Ctr, Dayton, OH 45435 USA.
[Grzybowski, G.] Solid State Sci Corp, Hollis, NH 03049 USA.
RP Claflin, B (reprint author), Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
NR 15
TC 0
Z9 0
U1 0
U2 1
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-60768-543-2
J9 ECS TRANSACTIONS
PY 2014
VL 64
IS 6
BP 801
EP 810
DI 10.1149/06406.0801ecst
PG 10
WC Electrochemistry; Materials Science, Multidisciplinary; Materials
Science, Characterization & Testing
SC Electrochemistry; Materials Science
GA BC9PP
UT WOS:000356773400078
ER
PT S
AU Andersen, GP
Gelsinger-Austin, P
Gaddipati, R
Gaddipati, P
Ghebremichael, F
AF Andersen, Geoff P.
Gelsinger-Austin, Paul
Gaddipati, Ravi
Gaddipati, Phani
Ghebremichael, Fassil
BE Marchetti, E
Close, LM
Veran, JP
TI HALOS: fast, autonomous, holographic adaptive optics
SO ADAPTIVE OPTICS SYSTEMS IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive Optics Systems IV
CY JUN 22-27, 2014
CL Montreal, CANADA
SP SPIE, American Astron Soc, Australian Astron Observatory, Assoc Univ Res Astron, Canadian Astron Soc, Canadian Space Agcy, European Astron Soc, European So Observatory, Natl Radio Astron Observatory, Royal Astron Soc, Sci & Technol Facilities Council
DE Adaptive optics; holography; aberration correction
ID WAVE-FRONT SENSOR
AB We present progress on our holographic adaptive laser optics system (HALOS) - a compact, closed-loop aberration correction system that uses a multiplexed hologram to deconvolve the phase aberrations in an input beam. The wavefront characterization is based on simple, parallel measurements of the intensity of fixed focal spots and does not require any complex calculations. As such, the system does not require a computer and is thus much cheaper, less complex than conventional approaches. We present details of a fully functional, closed-loop prototype incorporating a 32-element MEMS mirror, operating at a bandwidth of over 10kHz. Additionally, since the all-optical sensing is made in parallel, the speed is independent of actuator number - running at the same bandwidth for one actuator as for a million.
C1 [Andersen, Geoff P.; Gelsinger-Austin, Paul; Gaddipati, Ravi; Gaddipati, Phani; Ghebremichael, Fassil] USAF Acad, HQ USAFA DFP, Colorado Springs, CO 80840 USA.
RP Andersen, GP (reprint author), USAF Acad, HQ USAFA DFP, 2354 Fairchild Dr,Ste 2A31, Colorado Springs, CO 80840 USA.
EM geoff.andersen@usafa.edu
NR 12
TC 1
Z9 1
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9616-4
J9 PROC SPIE
PY 2014
VL 9148
AR UNSP 91485S
DI 10.1117/12.2054444
PG 7
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BC8OD
UT WOS:000355930800176
ER
PT B
AU Luckarift, HR
Atanassov, P
Johnson, GR
AF Luckarift, Heather R.
Atanassov, Plamen
Johnson, Glenn R.
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI ENZYMATIC FUEL CELLS From Fundamentals to Applications INTRODUCTION
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Editorial Material; Book Chapter
C1 [Luckarift, Heather R.] Universal Technol Corp, Dayton, OH 45432 USA.
[Luckarift, Heather R.; Johnson, Glenn R.] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL USA.
[Atanassov, Plamen] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
[Atanassov, Plamen] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA.
RP Luckarift, HR (reprint author), Universal Technol Corp, Dayton, OH 45432 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP 1
EP 3
D2 10.1002/9781118869796
PG 3
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200002
ER
PT B
AU Minteer, SD
Luckarift, HR
Atanassov, P
AF Minteer, Shelley D.
Luckarift, Heather R.
Atanassov, Plamen
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI ELECTROCHEMICAL EVALUATION OF ENZYMATIC FUEL CELLS AND FIGURES OF MERIT
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Article; Book Chapter
ID DIRECT ELECTRON-TRANSFER; BIOFUEL CELLS; OXYGEN; BIOELECTROCATALYSIS;
FUNDAMENTALS; PARAMETERS; OXIDASE; CATHODE; CARBON; WATER
C1 [Minteer, Shelley D.] Univ Utah, Dept Chem, Salt Lake City, UT 84132 USA.
[Minteer, Shelley D.] Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT USA.
[Luckarift, Heather R.] Universal Technol Corp, Dayton, OH USA.
[Luckarift, Heather R.] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL USA.
[Atanassov, Plamen] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
[Atanassov, Plamen] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA.
RP Minteer, SD (reprint author), Univ Utah, Dept Chem, Salt Lake City, UT 84132 USA.
OI Minteer, Shelley/0000-0002-5788-2249
NR 25
TC 0
Z9 0
U1 0
U2 0
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP 4
EP 11
D2 10.1002/9781118869796
PG 8
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200003
ER
PT B
AU Ivnitski, DM
Atanassov, P
Luckarift, HR
AF Ivnitski, Dmitri M.
Atanassov, Plamen
Luckarift, Heather R.
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI DIRECT BIOELECTROCATALYSIS: OXYGEN REDUCTION FOR BIOLOGICAL FUEL CELLS
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Article; Book Chapter
ID DIRECT ELECTRON-TRANSFER; FUNGUS TRAMETES-VERSICOLOR; PROTEIN FILM
VOLTAMMETRY; REDOX POTENTIAL LACCASES; AIR DIFFUSION BIOCATHODE; BIOFUEL
CELLS; BILIRUBIN OXIDASE; MULTICOPPER OXIDASES; BREATHING CATHODE;
ASCORBATE OXIDASE
C1 [Ivnitski, Dmitri M.; Atanassov, Plamen] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
[Ivnitski, Dmitri M.; Atanassov, Plamen] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA.
[Luckarift, Heather R.] Universal Technol Corp, Dayton, OH USA.
[Luckarift, Heather R.] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL USA.
RP Ivnitski, DM (reprint author), Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
NR 88
TC 0
Z9 0
U1 0
U2 0
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP 12
EP 32
D2 10.1002/9781118869796
PG 21
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200004
ER
PT B
AU Luckarift, HR
Atanassov, P
Johnson, GR
AF Luckarift, Heather R.
Atanassov, Plamen
Johnson, Glenn R.
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI ENZYMATIC FUEL CELLS From Fundamentals to Applications PREFACE
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Editorial Material; Book Chapter
C1 [Luckarift, Heather R.] Universal Technol Corp, Dayton, OH 45432 USA.
[Luckarift, Heather R.; Johnson, Glenn R.] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL USA.
[Atanassov, Plamen] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
[Atanassov, Plamen] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA.
RP Luckarift, HR (reprint author), Universal Technol Corp, Dayton, OH 45432 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP XV
EP XV
D2 10.1002/9781118869796
PG 1
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200001
ER
PT B
AU Rincon, RA
Lau, C
Atanassov, P
Luckarift, HR
AF Rincon, Rosalba A.
Lau, Carolin
Atanassov, Plamen
Luckarift, Heather R.
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI ANODIC CATALYSTS FOR OXIDATION OF CARBON-CONTAINING FUELS
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Article; Book Chapter
ID NICOTINAMIDE-ADENINE-DINUCLEOTIDE; DIRECT ELECTRON-TRANSFER;
PQQ-GLUCOSE-DEHYDROGENASE; ENZYMATIC BIOFUEL CELLS; ELECTROCATALYTIC
OXIDATION; ELECTROCHEMICAL OXIDATION; NADH-OXIDATION; AMPEROMETRIC
BIOSENSORS; METHYLENE GREEN; GLASSY-CARBON
C1 [Rincon, Rosalba A.; Lau, Carolin; Atanassov, Plamen] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
[Rincon, Rosalba A.; Lau, Carolin; Atanassov, Plamen] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA.
[Luckarift, Heather R.] Universal Technol Corp, Dayton, OH USA.
[Luckarift, Heather R.] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL USA.
RP Rincon, RA (reprint author), Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
NR 119
TC 0
Z9 0
U1 2
U2 2
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP 33
EP 52
D2 10.1002/9781118869796
PG 20
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200005
ER
PT B
AU Eby, DM
Johnson, GR
AF Eby, D. Matthew
Johnson, Glenn R.
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI PURIFICATION AND CHARACTERIZATION OF MULTICOPPER OXIDASES FOR ENZYME
ELECTRODES
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Article; Book Chapter
ID VERRUCARIA BILIRUBIN OXIDASE; SITE-DIRECTED MUTAGENESIS; MULTI-COPPER
OXIDASE; ASCORBATE OXIDASE; BACILLUS-SUBTILIS; MYROTHECIUM-VERRUCARIA;
BIOCHEMICAL-CHARACTERIZATION; STREPTOMYCES-COELICOLOR; EXTRACELLULAR
LACCASE; PLEUROTUS-OSTREATUS
C1 [Eby, D. Matthew] Booz Allen Hamilton, Atlanta, GA 30303 USA.
[Eby, D. Matthew; Johnson, Glenn R.] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL USA.
RP Eby, DM (reprint author), Booz Allen Hamilton, Atlanta, GA 30303 USA.
NR 85
TC 0
Z9 0
U1 0
U2 0
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP 123
EP 145
D2 10.1002/9781118869796
PG 23
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200009
ER
PT B
AU Strack, G
Johnson, GR
AF Strack, Guinevere
Johnson, Glenn R.
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI HIERARCHICAL MATERIALS ARCHITECTURES FOR ENZYMATIC FUEL CELLS
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Article; Book Chapter
ID DIRECT ELECTRON-TRANSFER; AIR DIFFUSION BIOCATHODE; TRAMETES-HIRSUTA
LACCASE; WASTE-WATER TREATMENT; BIOFUEL CELLS; SHEWANELLA-ONEIDENSIS;
CARBON NANOTUBES; STREPTOMYCES-COELICOLOR; SYNTHESIZED SILICA; OXYGEN
REDUCTION
C1 [Strack, Guinevere] Oak Ridge Inst Sci & Engn, Oak Ridge, TN 37831 USA.
[Strack, Guinevere; Johnson, Glenn R.] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL USA.
RP Strack, G (reprint author), Oak Ridge Inst Sci & Engn, Oak Ridge, TN 37831 USA.
NR 93
TC 0
Z9 0
U1 0
U2 0
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP 181
EP 207
D2 10.1002/9781118869796
PG 27
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200011
ER
PT B
AU Betancor, L
Luckarift, HR
AF Betancor, Lorena
Luckarift, Heather R.
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI ENZYME IMMOBILIZATION FOR BIOLOGICAL FUEL CELL APPLICATIONS
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Article; Book Chapter
ID DIRECT ELECTRON-TRANSFER; BIOFUEL CELL; GLUCOSE-OXIDASE; ELECTROCHEMICAL
BIOSENSORS; ORIENTED IMMOBILIZATION; CARBON ELECTRODES; GOLD ELECTRODE;
LARGE PROTEINS; REDOX ENZYMES; LACCASE
C1 [Betancor, Lorena] Univ ORT Uruguay, Fac Ingn, Lab Biotecnol, Montevideo, Uruguay.
[Luckarift, Heather R.] Universal Technol Corp, Dayton, OH USA.
[Luckarift, Heather R.] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL USA.
RP Betancor, L (reprint author), Univ ORT Uruguay, Fac Ingn, Lab Biotecnol, Montevideo, Uruguay.
NR 77
TC 1
Z9 1
U1 0
U2 1
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP 208
EP 224
D2 10.1002/9781118869796
PG 17
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200012
ER
PT B
AU Cooney, MJ
Luckarift, HR
AF Cooney, Michael J.
Luckarift, Heather R.
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI INTERROGATING IMMOBILIZED ENZYMES IN HIERARCHICAL STRUCTURES
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Article; Book Chapter
ID DIRECT ELECTRON-TRANSFER; HYDROPHOBICALLY-MODIFIED CHITOSAN;
FLOW-THROUGH ELECTRODES; GLUCOSE FUEL-CELL; BIOFUEL CELLS;
MALATE-DEHYDROGENASE; CARBON NANOTUBES; OXIDASE; SCAFFOLDS; DESIGN
C1 [Cooney, Michael J.] Univ Hawaii Manoa, Hawaii Nat Energy Inst, Sch Ocean & Earth Sci & Technol, Honolulu, HI 96822 USA.
[Luckarift, Heather R.] Universal Technol Corp, Dayton, OH USA.
[Luckarift, Heather R.] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL USA.
RP Cooney, MJ (reprint author), Univ Hawaii Manoa, Hawaii Nat Energy Inst, Sch Ocean & Earth Sci & Technol, Honolulu, HI 96822 USA.
NR 38
TC 0
Z9 0
U1 0
U2 1
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP 225
EP 241
D2 10.1002/9781118869796
PG 17
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200013
ER
PT B
AU Farrington, KE
Luckarift, HR
Eby, DM
Artyushkova, K
AF Farrington, Karen E.
Luckarift, Heather R.
Eby, D. Matthew
Artyushkova, Kateryna
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI IMAGING AND CHARACTERIZATION OF THE BIO-NANO INTERFACE
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Article; Book Chapter
ID RAY PHOTOELECTRON-SPECTROSCOPY; ATOMIC-FORCE MICROSCOPY; DIRECT
ELECTRON-TRANSFER; GLUCOSE-OXIDASE; THIN-FILMS; ENZYME IMMOBILIZATION;
PROTEIN ADSORPTION; CRYSTAL-STRUCTURE; LACCASE; PROBE
C1 [Farrington, Karen E.; Luckarift, Heather R.] Universal Technol Corp, Dayton, OH 45432 USA.
[Farrington, Karen E.; Luckarift, Heather R.; Eby, D. Matthew] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL USA.
[Eby, D. Matthew] Booz Allen Hamilton, Atlanta, GA USA.
[Artyushkova, Kateryna] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
[Artyushkova, Kateryna] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA.
RP Farrington, KE (reprint author), Universal Technol Corp, Dayton, OH 45432 USA.
RI Artyushkova, Kateryna/B-4709-2008
OI Artyushkova, Kateryna/0000-0002-2611-0422
NR 68
TC 0
Z9 0
U1 0
U2 1
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP 242
EP 272
D2 10.1002/9781118869796
PG 31
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200014
ER
PT B
AU Johnson, GR
Luckarift, HR
Atanassov, P
AF Johnson, Glenn R.
Luckarift, Heather R.
Atanassov, Plamen
BE Luckarift, HR
Atanassov, P
Johnson, GR
TI ENZYMATIC FUEL CELLS From Fundamentals to Applications CONCLUDING
REMARKS AND OUTLOOK
SO ENZYMATIC FUEL CELLS: FROM FUNDAMENTALS TO APPLICATIONS
LA English
DT Editorial Material; Book Chapter
ID BIOFUEL CELLS; ELECTRODES; POWER
C1 [Johnson, Glenn R.; Luckarift, Heather R.] Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL 32403 USA.
[Luckarift, Heather R.] Universal Technol Corp, Dayton, OH USA.
[Atanassov, Plamen] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
[Atanassov, Plamen] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA.
RP Johnson, GR (reprint author), Air Force Res Lab, Airbase Sci Branch, Tyndall AFB, FL 32403 USA.
NR 10
TC 0
Z9 0
U1 0
U2 0
PU BLACKWELL SCIENCE PUBL
PI OXFORD
PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND
BN 978-1-118-86986-4; 978-1-118-36923-4
PY 2014
BP 451
EP 458
D2 10.1002/9781118869796
PG 8
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BC7LI
UT WOS:000354985200021
ER
PT B
AU Vagts, D
AF Vagts, Detlev
BE Saul, B
TI Terrorism and military trials
SO RESEARCH HANDBOOK ON INTERNATIONAL LAW AND TERRORISM
SE Research Handbooks in International Law
LA English
DT Article; Book Chapter
C1 [Vagts, Detlev] Cahill Gordon Reindel & Ohl, New York, NY USA.
[Vagts, Detlev] US Air Force, Washington, DC USA.
[Vagts, Detlev] Harvard Univ, Sch Law, Cambridge, MA 02138 USA.
[Vagts, Detlev] US Dept State, Int Law, Washington, DC USA.
NR 15
TC 0
Z9 0
U1 0
U2 0
PU EDWARD ELGAR PUBLISHING LTD
PI CHELTENHAM
PA GLENSANDA HOUSE, MONTPELLIER PARADE, CHELTENHAM GL50 1UA, GLOS, ENGLAND
BN 978-0-85793-881-7; 978-0-85793-880-0
J9 RES HB INT LAW
PY 2014
BP 271
EP 281
D2 10.4337/9780857938817
PG 11
WC International Relations; Law
SC International Relations; Government & Law
GA BC5HX
UT WOS:000353291700017
ER
PT J
AU Hesterman, JL
AF Hesterman, Jennifer L.
BA Mastors, E
BF Mastors, E
TI The Road to Breaking Al-Qaeda
SO BREAKING AL-QAEDA: PSYCHOLOGICAL AND OPERATIONAL TECHNIQUES, 2ND EDITION
LA English
DT Article; Book Chapter
C1 [Hesterman, Jennifer L.] US Air Force, Washington, DC USA.
NR 64
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-3012-3
PY 2014
BP 1
EP 41
D2 10.1201/b16911
PG 41
WC Criminology & Penology; Political Science; Psychology, Social
SC Criminology & Penology; Government & Law; Psychology
GA BC5KR
UT WOS:000353349800003
ER
PT J
AU Hesterman, JL
AF Hesterman, Jennifer L.
BA Mastors, E
BF Mastors, E
TI Breaking Al-Qaeda Psychological and Operational Techniques Second
Edition FOREWORD
SO BREAKING AL-QAEDA: PSYCHOLOGICAL AND OPERATIONAL TECHNIQUES, 2ND EDITION
LA English
DT Editorial Material; Book Chapter
C1 [Hesterman, Jennifer L.] US Air Force, Washington, DC USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-3012-3
PY 2014
BP IX
EP X
D2 10.1201/b16911
PG 2
WC Criminology & Penology; Political Science; Psychology, Social
SC Criminology & Penology; Government & Law; Psychology
GA BC5KR
UT WOS:000353349800001
ER
PT J
AU Hesterman, JL
AF Hesterman, Jennifer L.
BA Mastors, E
BF Mastors, E
TI Breaking Al-Qaeda Psychological and Operational Techniques Second
Edition PREFACE
SO BREAKING AL-QAEDA: PSYCHOLOGICAL AND OPERATIONAL TECHNIQUES, 2ND EDITION
LA English
DT Editorial Material; Book Chapter
C1 [Hesterman, Jennifer L.] US Air Force, Washington, DC USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-3012-3
PY 2014
BP XI
EP XIII
D2 10.1201/b16911
PG 3
WC Criminology & Penology; Political Science; Psychology, Social
SC Criminology & Penology; Government & Law; Psychology
GA BC5KR
UT WOS:000353349800002
ER
PT J
AU Hesterman, JL
AF Hesterman, Jennifer L.
BA Mastors, E
BF Mastors, E
TI The Origination and Continuation of the Threat
SO BREAKING AL-QAEDA: PSYCHOLOGICAL AND OPERATIONAL TECHNIQUES, 2ND EDITION
LA English
DT Article; Book Chapter
C1 [Hesterman, Jennifer L.] US Air Force, Washington, DC USA.
NR 29
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-3012-3
PY 2014
BP 43
EP 72
D2 10.1201/b16911
PG 30
WC Criminology & Penology; Political Science; Psychology, Social
SC Criminology & Penology; Government & Law; Psychology
GA BC5KR
UT WOS:000353349800004
ER
PT J
AU Hesterman, JL
AF Hesterman, Jennifer L.
BA Mastors, E
BF Mastors, E
TI The Mentality of the Threat
SO BREAKING AL-QAEDA: PSYCHOLOGICAL AND OPERATIONAL TECHNIQUES, 2ND EDITION
LA English
DT Article; Book Chapter
C1 [Hesterman, Jennifer L.] US Air Force, Washington, DC USA.
NR 64
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-3012-3
PY 2014
BP 73
EP 113
D2 10.1201/b16911
PG 41
WC Criminology & Penology; Political Science; Psychology, Social
SC Criminology & Penology; Government & Law; Psychology
GA BC5KR
UT WOS:000353349800005
ER
PT J
AU Hesterman, JL
AF Hesterman, Jennifer L.
BA Mastors, E
BF Mastors, E
TI The Business of Influence
SO BREAKING AL-QAEDA: PSYCHOLOGICAL AND OPERATIONAL TECHNIQUES, 2ND EDITION
LA English
DT Article; Book Chapter
C1 [Hesterman, Jennifer L.] US Air Force, Washington, DC USA.
NR 17
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-3012-3
PY 2014
BP 115
EP 132
D2 10.1201/b16911
PG 18
WC Criminology & Penology; Political Science; Psychology, Social
SC Criminology & Penology; Government & Law; Psychology
GA BC5KR
UT WOS:000353349800006
ER
PT J
AU Hesterman, JL
AF Hesterman, Jennifer L.
BA Mastors, E
BF Mastors, E
TI Breaking Individuals
SO BREAKING AL-QAEDA: PSYCHOLOGICAL AND OPERATIONAL TECHNIQUES, 2ND EDITION
LA English
DT Article; Book Chapter
C1 [Hesterman, Jennifer L.] US Air Force, Washington, DC USA.
NR 34
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-3012-3
PY 2014
BP 133
EP 162
D2 10.1201/b16911
PG 30
WC Criminology & Penology; Political Science; Psychology, Social
SC Criminology & Penology; Government & Law; Psychology
GA BC5KR
UT WOS:000353349800007
ER
PT J
AU Hesterman, JL
AF Hesterman, Jennifer L.
BA Mastors, E
BF Mastors, E
TI Breaking Groups
SO BREAKING AL-QAEDA: PSYCHOLOGICAL AND OPERATIONAL TECHNIQUES, 2ND EDITION
LA English
DT Article; Book Chapter
C1 [Hesterman, Jennifer L.] US Air Force, Washington, DC USA.
NR 28
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-3012-3
PY 2014
BP 163
EP 181
D2 10.1201/b16911
PG 19
WC Criminology & Penology; Political Science; Psychology, Social
SC Criminology & Penology; Government & Law; Psychology
GA BC5KR
UT WOS:000353349800008
ER
PT J
AU Hesterman, JL
AF Hesterman, Jennifer L.
BA Mastors, E
BF Mastors, E
TI Breaking Relationships between Groups
SO BREAKING AL-QAEDA: PSYCHOLOGICAL AND OPERATIONAL TECHNIQUES, 2ND EDITION
LA English
DT Article; Book Chapter
C1 [Hesterman, Jennifer L.] US Air Force, Washington, DC USA.
NR 27
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-3012-3
PY 2014
BP 183
EP 203
D2 10.1201/b16911
PG 21
WC Criminology & Penology; Political Science; Psychology, Social
SC Criminology & Penology; Government & Law; Psychology
GA BC5KR
UT WOS:000353349800009
ER
PT J
AU Hesterman, JL
AF Hesterman, Jennifer L.
BA Mastors, E
BF Mastors, E
TI The Final Break
SO BREAKING AL-QAEDA: PSYCHOLOGICAL AND OPERATIONAL TECHNIQUES, 2ND EDITION
LA English
DT Article; Book Chapter
C1 [Hesterman, Jennifer L.] US Air Force, Washington, DC USA.
NR 3
TC 0
Z9 0
U1 0
U2 0
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-1-4822-3012-3
PY 2014
BP 205
EP 211
D2 10.1201/b16911
PG 7
WC Criminology & Penology; Political Science; Psychology, Social
SC Criminology & Penology; Government & Law; Psychology
GA BC5KR
UT WOS:000353349800010
ER
PT S
AU Andersen, GP
Asmolova, O
AF Andersen, Geoff P.
Asmolova, Olha
BE Oschmann, JM
Clampin, M
Fazio, GG
MacEwen, HA
TI FalconSAT-7: a membrane space telescope
SO SPACE TELESCOPES AND INSTRUMENTATION 2014: OPTICAL, INFRARED, AND
MILLIMETER WAVE
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Space Telescopes and Instrumentation - Optical, Infrared,
and Millimeter Wave
CY JUN 22-27, 2014
CL Montreal, CANADA
SP American Astron Soc, Australian Astron Observatory, Assoc Univ Res Astron, Canadian Astron Soc, Canadian Space Agcy, European Astron Society, European So Observatory, Natl Radio Astron Observatory, Royal Astron Soc, Sci & Technol Facilities Council
DE Solar telescope; Diffractive optics; Lightweight optics; Cubesat
ID PHOTON SIEVE; MODEL
AB The USAF Academy Department of Physics has built FalconSAT-7, a membrane solar telescope to be deployed from a 3U CubeSat in LEO. The primary optic is a 0.2m photon sieve a diffractive element consisting of billions of tiny circular dimples etched into a Kapton sheet. The membrane, its support structure, secondary optics, two imaging cameras and associated control/recording electronics are all packaged within half the Cube Sat volume. Once in space the supporting pantograph structure is deployed, extending out and pulling the membrane flat under tension. The telescope will then be directed at the Sun to gather images at H-alpha for transmission to the ground. Due for launch in 2015, FalconSAT-7 will serve as a pathfinder for future surveillance missions consisting of a 0.3m aperture deployed from a 12U satellite. Such a telescope would be capable of providing sub-meter resolution of ground-based objects.
C1 [Andersen, Geoff P.] USAF Acad, HQ USAFA DFP, Colorado Springs, CO 80840 USA.
RP Andersen, GP (reprint author), USAF Acad, HQ USAFA DFP, 2354 Fairchild Dr,Ste 2A31, Colorado Springs, CO 80840 USA.
EM geoff.andersen@usafa.edu
NR 9
TC 2
Z9 3
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9611-9
J9 PROC SPIE
PY 2014
VL 9143
AR 91431X
DI 10.1117/12.2054441
PG 6
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BC6WK
UT WOS:000354526800059
ER
PT S
AU Mee, JK
Raghunathan, R
Murrell, D
Braga, A
Li, Y
Lester, LF
AF Mee, J. K.
Raghunathan, R.
Murrell, D.
Braga, A.
Li, Y.
Lester, L. F.
BE Gregory, GG
Davis, AJ
TI Reduced group delay dispersion in quantum dot passively mode-locked
lasers operating at elevated temperature
SO NOVEL OPTICAL SYSTEMS DESIGN AND OPTIMIZATION XVII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT 17th Conference of Novel Optical Systems Design and Optimization
CY AUG 17-19, 2014
CL San Diego, CA
SP SPIE
DE Semiconductor Lasers; Passively Mode-Locked Lasers; Quantum Dots;
Frequency Resolved Optical Gating (FROG); Group Delay Dispersion
AB A detailed study of the pulse characteristics emitted from a monolithic Quantum Dot (QD) passively Mode-Locked Laser (MLL) has been performed using a state-of-the-art Frequency Resolved Optical Gating (FROG) pulse measurement system. While traditionally the time-domain pulse characteristics of semiconductor MLLs have been studied using digital sampling oscilloscope or intensity autocorrelation techniques, the FROG measurements allow for simultaneous characterization of time and frequency, which has been shown to be necessary and sufficient for true determination of mode-locked stability. In this paper, FROG pulse measurements are presented on a two-section QD MLL operating over wide temperature excursions. The FROG measurement allows for extraction of the temporal and spectral intensity and phase profiles from which the Group Delay Dispersion (GDD) can be determined. The magnitude of the GDD is found to decrease from 16.1 to 3.5 ps/nm when the temperature is increased from 20 to 50 degrees C, mirroring the trend of pulse width reduction at elevated temperature, which has been shown to correlate strongly with reduced unsaturated absorption. The possibility to further optimize pulse generation via intra-cavity dispersion compensation in a novel three-section MLL design is also examined, and shows strong potential toward providing valuable insight into the optimal cavity designs and operating parameters for QD MLLs.
C1 [Mee, J. K.] Air Force Res Lab, Kirtland AFB, NM 87120 USA.
[Raghunathan, R.; Murrell, D.; Lester, L. F.] Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA.
[Braga, A.] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
[Li, Y.] APIC Corp, Culver City, CA 90230 USA.
RP Mee, JK (reprint author), Air Force Res Lab, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87120 USA.
EM jesse.mee@us.af.mil
NR 18
TC 0
Z9 0
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-220-8
J9 PROC SPIE
PY 2014
VL 9193
AR 919311
DI 10.1117/12.2059208
PG 9
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BC6PX
UT WOS:000354367700031
ER
PT S
AU Dolne, JJ
Gerwe, DR
Crabtree, PN
AF Dolne, Jean J.
Gerwe, David R.
Crabtree, Peter N.
BE Rajagopal, JK
CreechEakman, MJ
Malbet, F
TI Cramer-Rao lower bound and object reconstruction performance evaluation
for intensity interferometry
SO OPTICAL AND INFRARED INTERFEROMETRY IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Optical and Infrared Interferometry IV
CY JUN 23-27, 2014
CL Montreal, CANADA
SP SPIE
DE Intensity interferometry; object reconstruction; regularization;
Cramer-Rao lower bound; Fisher information matrix; support constraint
AB This paper addresses the fundamental performance limits of object reconstruction methods using intensity interferometry measurements. It shows examples of reconstructed objects obtained with the FIIRE (Forward-model Interferometry Image Reconstruction Estimator) code developed by Boeing for AFRL. It considers various issues when calculating the multidimensional Cramer-Rao lower bound (CRLB) when the Fisher information matrix (FIM) is singular. In particular, when comparing FIIRE performance, characterized as the root mean square difference between the estimated and pristine objects with the CRLB, we found that FIIRE performance improved as the singularity became worse, a result not expected. We found that for invertible FIM, FIIRE yielded lower root mean squared error than the square root of the CRLB (by a factor as large as 100). This may be due to various regularization constraints (positivity, support, sharpness, and smoothness) included in FIIRE, rendering it a biased estimator, as opposed to the unbiased CRLB framework used. Using the sieve technique to mitigate false high frequency content inherent in point-by-point object reconstruction methods, we also show further improved FIIRE performance on some generic objects. It is worth noting that since FIIRE is an iterative algorithm searching to arrive at an object estimate consistent with the collected data and various constraints, an initial object estimate is required. In our case, we used a completely random initial object guess consisting of a 2-D array of uniformly distributed random numbers, sometimes multiplied with a 2-D Gaussian function.
C1 [Dolne, Jean J.] Boeing Phantom Works, Huntington Beach, CA 92647 USA.
[Gerwe, David R.] Boeing Phantom Works, El Segundo, CA 90245 USA.
[Crabtree, Peter N.] US Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
RP Dolne, JJ (reprint author), Boeing Phantom Works, 5301 Bolsa Ave H017-D728, Huntington Beach, CA 92647 USA.
EM jean.j.dolne@boeing.com; david.r.gerwe@boeing.com
NR 11
TC 2
Z9 2
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9614-0
J9 PROC SPIE
PY 2014
VL 9146
AR 914636
DI 10.1117/12.2063418
PG 12
WC Optics; Physics, Applied
SC Optics; Physics
GA BC6QF
UT WOS:000354379200094
ER
PT S
AU Spencer, MF
Steinbock, MJ
Hyde, MW
Marciniak, MA
AF Spencer, Mark F.
Steinbock, Michael J.
Hyde, Milo W.
Marciniak, Michael A.
BE Gregory, GG
TI The Laser Propagation Demonstration: a STEM-based outreach project
SO OPTICS EDUCATION AND OUTREACH III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT 3rd Conference on Optics Education and Outreach
CY AUG 18-20, 2014
CL San Diego, CA
SP SPIE
DE STEM; Outreach; SPIE Student Chapter; AFIT; Laser Propagation; Optics
and Photonics Demonstration; Optics Outreach Games; Physics Education
AB Investment in laser technology has led to significant advances in remote sensing, astronomy, industrial processing, and medical technology. To celebrate this rich heritage and promote public awareness in optics and photonics, the SPIE Student Chapter at the Air Force Institute of Technology (AFIT) developed the Laser Propagation Demonstration (LPD). This interactive demonstration serves as one of AFIT's legacy outreach projects for events involving education in science, technology, engineering, and mathematics (STEM). Initially developed with funding from a LaserFest grant awarded by SPIE in 2010, the goal was to develop a simple hands-on demonstration to highlight the optical effects of diffraction, refraction, and attenuation on laser propagation. Since then, the LPD has undergone several upgrades (thanks to the continued support from a 2012 SPIE Education Outreach Grant) to better highlight these optical phenomena and make it more engaging for a wider range of audiences. This paper celebrates the continued success of the LPD and shares the knowledge gained with an overview of its design and use in STEM-based outreach events.
C1 [Spencer, Mark F.; Steinbock, Michael J.; Hyde, Milo W.; Marciniak, Michael A.] US Air Force, Inst Technol, Wright Patterson AFB, OH 45433 USA.
RP Spencer, MF (reprint author), US Air Force, Inst Technol, 2950 Hobson Way,Bldg 640, Wright Patterson AFB, OH 45433 USA.
EM msphotonics@gmail.com
NR 11
TC 0
Z9 0
U1 1
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-215-4
J9 PROC SPIE
PY 2014
VL 9188
AR 91880D
DI 10.1117/12.2060879
PG 15
WC Optics
SC Optics
GA BC6QC
UT WOS:000354373200011
ER
PT J
AU Ferguson, LA
Breitzman, TD
AF Ferguson, Lauren A.
Breitzman, Timothy D.
BE Onate, E
Oliver, X
Huerta, A
TI IMPLEMENTATION AND EXPERIMENTAL VALIDATION OF THE SENDOVA-WALTON THEORY
FOR MODE-I FRACTURE
SO 11TH WORLD CONGRESS ON COMPUTATIONAL MECHANICS; 5TH EUROPEAN CONFERENCE
ON COMPUTATIONAL MECHANICS; 6TH EUROPEAN CONFERENCE ON COMPUTATIONAL
FLUID DYNAMICS, VOLS II - IV
LA English
DT Proceedings Paper
CT 11th World Congress on Computational Mechanics (WCCM) / 5th European
Conference on Computational Mechanics (ECCM) / 6th European Conference
on Computational Fluid Dynamics (ECFD)
CY JUL 20-25, 2014
CL Barcelona, SPAIN
SP Spanish Assoc Numer Methods Engn, Cambridge Univ Press, CIMNE Technologia, CRC Press, Taylor & Francis Grp, ELSEVIER, ECCOMAS, GID, iacm, John Wiley & Sons ltd, Korea Soc Computat Mech, Portable Multimedia Solutions Inflatable Struct, Springer, Collegi Enginyers Camins Canas Ports Catalunya
DE Surface tension; Sendova-Walton fracture theory
ID CONTINUUM-MECHANICS; NANOSCALE; EXTENSION
AB The Sendova-Walton fracture theory incorporates atomistic effects into a continuum framework by ascribing a surface tension excess property to the fracture surfaces. We are interested in implementing a numerical model of this theory using the finite element method for mode-I quasistatic brittle fracture, for which the theory predicts finite stresses at the crack tips. This is a challenge since the curvature-dependent surface tension yields a weak formulation with higher-order derivatives. We propose an alternative formulation using a Green's function which we implement using nonlocal calculations on standard finite elements. We present some preliminary results of this implementation, as well as those using a simpler constant surface tension, which reduces but does not eliminate the stress singularity at the tips.
To validate the model, we consider a contact problem, rather than the fracture problem, due to the difficulty of obtaining accurate crack shape measurements in fracture experiments. The equilibrium governing equation is the same as in the fracture problem, but the excess property is now ascribed to the free surface outside the contact region. We conducted corresponding nanoindentation experiments on a cured epoxy resin. By comparing the graphs of applied force versus indentation depth, we observe the correlation between the experimental and simulation results.
C1 [Ferguson, Lauren A.; Breitzman, Timothy D.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
[Ferguson, Lauren A.] Univ Dayton, Res Inst, Dayton, OH 45469 USA.
RP Ferguson, LA (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
EM lauren.ferguson.1.ctr@us.af.mil
NR 10
TC 0
Z9 0
U1 0
U2 2
PU INT CENTER NUMERICAL METHODS ENGINEERING
PI 08034 BARCELONA
PA GRAN CAPITAN, S-N, CAMPUS NORTE UPC, MODULO C1, 08034 BARCELONA, SPAIN
BN 978-84-942844-7-2
PY 2014
BP 3997
EP 4008
PG 12
WC Mathematics, Applied; Mechanics
SC Mathematics; Mechanics
GA BC5XR
UT WOS:000353626505032
ER
PT B
AU Shaw, CA
AF Shaw, Christopher A.
BE Lengel, EG
TI THE BATTLE OF BLANC MONT
SO COMPANION TO THE MEUSE-ARGONNE CAMPAIGN
SE Blackwell Companions to American History
LA English
DT Article; Book Chapter
C1 [Shaw, Christopher A.] US Air Force, Washington, DC USA.
NR 16
TC 0
Z9 0
U1 0
U2 0
PU WILEY-BLACKWELL
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER, WEST SUSSEX PO19 8SQ, ENGLAND
BN 978-1-118-83633-0; 978-1-4443-5094-4
J9 BLACKW COMPAN AM HIS
PY 2014
BP 59
EP 73
D2 10.1002/9781118836330
PG 15
WC History
SC History
GA BC3IA
UT WOS:000351667500005
ER
PT B
AU McEvoy, WP
AF McEvoy, William P.
BE Lengel, EG
TI COMMUNICATIONS IN WORLD WAR I: THE MEUSE-ARGONNE CAMPAIGN OF 1918
SO COMPANION TO THE MEUSE-ARGONNE CAMPAIGN
SE Blackwell Companions to American History
LA English
DT Article; Book Chapter
C1 [McEvoy, William P.] Univ West Alabama, Livingston, AL USA.
[McEvoy, William P.] Blinn Coll, Brenham, TX USA.
[McEvoy, William P.] Bossier Parish Community Coll, Bossier City, LA USA.
[McEvoy, William P.] Univ Maryland, Univ Coll, College Pk, MD USA.
RP McEvoy, WP (reprint author), US Air Force, Washington, DC 20350 USA.
NR 31
TC 0
Z9 0
U1 0
U2 0
PU WILEY-BLACKWELL
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER, WEST SUSSEX PO19 8SQ, ENGLAND
BN 978-1-118-83633-0; 978-1-4443-5094-4
J9 BLACKW COMPAN AM HIS
PY 2014
BP 410
EP 424
D2 10.1002/9781118836330
PG 15
WC History
SC History
GA BC3IA
UT WOS:000351667500025
ER
PT S
AU Durkin, DP
Jost, K
Brown, EK
Haverhals, L
Dion, G
Gogotsi, Y
De Long, H
Trulove, PC
AF Durkin, David P.
Jost, Kristy
Brown, E. Kathryn
Haverhals, Luke
Dion, Genevieve
Gogotsi, Yury
De Long, Hugh
Trulove, Paul C.
BE Obeng, Y
Hiramoto, T
Hoff, A
Hesketh, P
Srinivasan, P
TI Knitted Electrochemical Capacitors Via Natural Fiber Welded Electrode
Yarns
SO INTERNATIONAL SYMPOSIUM ON FUNCTIONAL DIVERSIFICATION OF SEMICONDUCTOR
ELECTRONICS 2 (MORE-THAN-MOORE 2)
SE ECS Transactions
LA English
DT Proceedings Paper
CT 2nd International Symposium on Functional Diversification of
Semiconductor Electronics (More-Than-Moore) held during the 225th
meeting of The-Electrochemical-Society
CY MAY 11-15, 2014
CL Orlando, FL
SP Dielectr Sci & Technol, Elect & Photon, Sensor, New Technol Subcommittee, Electrochem Soc
ID PROCESS VARIABLES
AB This report presents a novel ionic liquid-based method for fabricating flexible double layer supercapacitor electrodes utilizing natural substrates. It investigates the performance of these yarns knitted as fabrics and with other cellulose-based fibers welded with carbon particles. Scanning electron microscopy, mechanical properties testing, conductivity and other electrochemical testing are performed to characterize both individual yarns and knitted devices.
C1 [Durkin, David P.; Brown, E. Kathryn; Trulove, Paul C.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
[Jost, Kristy; Gogotsi, Yury] Drexel Univ, AJ Drexel Nanotechnol Inst, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
[Haverhals, Luke] Bradley Univ, Mund Lagowski Dept Chem, Peoria, IL 61625 USA.
[Jost, Kristy; Dion, Genevieve] Drexel Univ, ExCITe Ctr, Shima Seiki Haute Technol Lab, Philadelphia, PA 19104 USA.
[De Long, Hugh] US Air Force, Off Sci Res, Complex Mat & Devices Dept, Arlington, VA USA.
RP Durkin, DP (reprint author), US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
NR 6
TC 1
Z9 1
U1 3
U2 9
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-60768-521-0
J9 ECS TRANSACTIONS
PY 2014
VL 61
IS 6
BP 17
EP 19
DI 10.1149/06106.0017ecst
PG 3
WC Electrochemistry; Engineering, Electrical & Electronic; Physics, Applied
SC Electrochemistry; Engineering; Physics
GA BC6GE
UT WOS:000353907400003
ER
PT J
AU Blackshire, JL
AF Blackshire, James L.
GP IEEE
TI Ultrasonic Propagation and Damage Sensing in a Bonded PMC/SiC-Foam
SO 2014 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
LA English
DT Proceedings Paper
CT IEEE International Ultrasonics Symposium (IUS)
CY SEP 03-06, 2014
CL Chicago, IL
SP IEEE
DE PMC; SiC Foam; Scanning Laser Vibrometry
AB The nondestructive evaluation of hybrid material systems is a challenging problem, where very different materials are often combined to enhance performance. In the present application, the bondline integrity of a sandwich structure is of interest, where two polymer matrix composite (PMC) facesheets are bonded to an insulating silicon carbide (SiC) foam interior. The propagation of ultrasound within the PMC-SiC Foam sandwich structure was studied using bonded PZT ultrasound sensing and scanning laser vibrometry, where wave propagation and scattering processes were evaluated for damaged and non-damaged SiC foam cases. The material system included two, 1-millimeter thick PMC facesheets bonded to a 14-millimeter thick SiC foam, where the sample had been subjected to a 4-point bend experiment, which generated a localized 45-degree crack in the SiC foam and a fracture of the PMC-SiC foam interface. The scanning laser vibrometry measurements were taken along the side profile of the layered material system, which permitted the visualization and study of propagating elastic wave energy through the thickness of the PMC-SiC-foam material system.
C1 AFRL, RXCA, Wright Patterson AFB, OH 45433 USA.
RP Blackshire, JL (reprint author), AFRL, RXCA, Wright Patterson AFB, OH 45433 USA.
EM James.Blackshire@wpafb.af.mil
NR 12
TC 0
Z9 0
U1 1
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-7049-0
PY 2014
BP 244
EP 247
DI 10.1109/ULTSYM.2014.0063
PG 4
WC Acoustics; Engineering, Electrical & Electronic
SC Acoustics; Engineering
GA BC4NN
UT WOS:000352792500062
ER
PT J
AU Blackshire, JL
AF Blackshire, James L.
GP IEEE
TI Visualization of Time Evolving Wavefront Advance in Polycrystalline
Materials
SO 2014 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
LA English
DT Proceedings Paper
CT IEEE International Ultrasonics Symposium (IUS)
CY SEP 03-06, 2014
CL Chicago, IL
SP IEEE
DE Polycrystalline Materials; Slowness; Scanning Laser Vibrometry
AB The nondestructive quantification of polycrystalline grain feature information in aerospace materials is an important area of recent research, where spatially-resolved measurements related to mean grain size, grain size distribution, and crystallographic orientation are needed for engineering analysis and material state awareness evaluations. In the present effort, the interaction of ultrasonic surface acoustic waves (SAW) with a dual-microstructure nickel polycrystalline material is studied, where an innovative wavefront imaging method is utilized to visualize and study the time-evolving advance of the primary, forward propagating wavefront through microstructure grain features on the material surface. The method involves a firstarrival, time-gated analysis of scanning laser vibrometry signal content, where the apparent motion of the wavefront through individual and clustered grains is observed and attributed to local changes in the orientation-dependent crystallographic slowness.
C1 US Air Force, Res Lab, AFRL RXCA, Wright Patterson AFB, OH 45433 USA.
RP Blackshire, JL (reprint author), US Air Force, Res Lab, AFRL RXCA, Wright Patterson AFB, OH 45433 USA.
EM James.Blackshire@wpafb.af.mil
NR 7
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-7049-0
PY 2014
BP 757
EP 760
DI 10.1109/ULTSYM.2014.0187
PG 4
WC Acoustics; Engineering, Electrical & Electronic
SC Acoustics; Engineering
GA BC4NN
UT WOS:000352792500187
ER
PT J
AU Johnson, D
Blackshire, JL
AF Johnson, Darius
Blackshire, James L.
GP IEEE
TI Methodology for the 3-Dimensional Model-Assisted Evaluation of
Polycrystalline Materials
SO 2014 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
LA English
DT Proceedings Paper
CT IEEE International Ultrasonics Symposium (IUS)
CY SEP 03-06, 2014
CL Chicago, IL
SP IEEE
DE Ultrasound; FEM; Polycrystalline; DREAM.3D
AB The quantitative nondestructive evaluation of tailored microstructures is becoming an increasingly important topic. In aerospace engine materials, NDE methods are needed to characterize polycrystalline grain information related to mean grain sizes, grain size distributions, and misorientation states. In the present research effort, model-assisted ultrasound methods are being developed to study fully 3-dimensional elastic wave propagation and scattering interactions with synthetic and realistic microstructures in nickel superalloy materials. A methodology for integrating synthetic and realistic 3-dimensional microstructure states into ultrasonic finite element models has been developed. The methodology utilizes a recently developed software platform called DREAM.3D, which provides a means for generating, analyzing, and archiving 3-dimensional microstructure volumes. In the present effort, custom Matlab code was developed to synergistically connect the DREAM. 3D environment with ultrasound FEM modeling software. The resulting software capability provides a means for accurately representing the full 3-dimensional crystallographic stiffness matrix values in complex polycrystalline systems, where ultrasonic sensing models are being used to understand time-resolved, backscatter ultrasound sensing for enhanced microstructure characterization in aerospace materials.
C1 [Johnson, Darius; Blackshire, James L.] US Air Force, Res Lab, RXCA, Wright Patterson AFB, OH 45433 USA.
RP Johnson, D (reprint author), US Air Force, Res Lab, RXCA, Wright Patterson AFB, OH 45433 USA.
EM Darius.Johnson@wpafb.af.mil
NR 12
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-7049-0
PY 2014
BP 1420
EP 1423
DI 10.1109/ULTSYM.2014.0351
PG 4
WC Acoustics; Engineering, Electrical & Electronic
SC Acoustics; Engineering
GA BC4NN
UT WOS:000352792500350
ER
PT S
AU Fu, YJ
Drager, S
AF Fu, Yujian
Drager, Steven
BE Clarke, PJ
Zulkernine, M
Paul, RA
Xu, J
TI Modeling and Verification of Humanoid Robot Task Coordination
SO 2014 IEEE 15TH INTERNATIONAL SYMPOSIUM ON HIGH-ASSURANCE SYSTEMS
ENGINEERING (HASE)
SE IEEE International Symposium on High-Assurance Systems Engineering
LA English
DT Proceedings Paper
CT 15th IEEE International Symposium on High-Assurance Systems Engineering
(HASE)
CY JAN 09-11, 2014
CL Miami, FL
SP IEEE, IEEE Comp Soc
ID ARCHITECTURE; SPECIFICATION; INTELLIGENT; SYSTEMS; UNEVEN; LOGIC
AB This paper presents a component-based framework of humanoid robot task coordination using Predicate Transition Nets (PrT Nets). Humanoid robots have a large number of degrees of freedom (DOF) and they are expected to generate human-like stable behaviors to finish missions. Their motions have to satisfy a set of constraints (balance, coordinated motions, collision free movements), which increases the complexity of the system - each movement may consist of several types of movements and tasks simultaneously. Task is defined as a sequence of movements and/or actions towards to completing a given mission. It is key to represent the task coordination precisely and correctly to program on humanoid robots' motions. To solve the challenge issue of multiple task coordination for a humanoid robot, we presented a framework that integrates Component Based Software Development (CBSD) with Predicate Transition Nets to analyze the correctness of task coordinations. Each component's behavior can be represented by a Predicate Transition Net, and the constraints of the behaviors are described by a set of temporal logic formulae. To ensure the task coordinations are met, a rewriting logic-based model checker is applied to verify the system against the constraints. This formal framework is general and can be used for other type humanoid robots. It allows the representation of motion plans and provides the flexibility of semantic analysis on the humanoid robotics systems.
C1 [Fu, Yujian] Alabama A&M Univ, Dept Elect Engn & Comp Sci, Huntsville, AL 35762 USA.
[Drager, Steven] US Air Force, Res Lab, RITA, Informat Directorate, Rome, NY 13441 USA.
RP Fu, YJ (reprint author), Alabama A&M Univ, Dept Elect Engn & Comp Sci, Huntsville, AL 35762 USA.
EM yujian.fu@aamu.edu; steven.drager@us.af.mil
NR 29
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1530-2059
BN 978-1-4799-3465-2
J9 IEEE HI ASS SYS ENGR
PY 2014
BP 73
EP 80
DI 10.1109/HASE.2014.19
PG 8
WC Computer Science, Hardware & Architecture; Computer Science, Information
Systems; Computer Science, Software Engineering
SC Computer Science
GA BC3MK
UT WOS:000351728000010
ER
PT J
AU Grace, F
Degnan, J
Roth, C
Gale, D
Coffey, S
Lehr, M
AF Grace, Fred
Degnan, James
Roth, Chris
Gale, Donald
Coffey, Sean
Lehr, Mark
BE Ames, RG
Boeka, RD
TI SHAPED CHARGE JETS DRIVEN BY ELECTROMAGNETIC ENERGY
SO 28TH INTERNATIONAL SYMPOSIUM ON BALLISTICS, VOLS 1 AND 2
LA English
DT Proceedings Paper
CT 28th International Symposium on Ballistics
CY SEP 22-26, 2014
CL Atlanta, GA
SP Natl Defense Ind Assoc, Int Ballist Soc
ID IMPLOSION; LINER
AB Shaped charge liners have been driven into full-scale jets using electromagnetic energy. The driving force was supplied by an 8 MA electrical discharge of the large Shiva Star capacitor bank facility at Kirtland AFB, Albuquerque, NM. Copper liners of conical and trumpet shape having base diameters of 23.7mm, 49.2mm and 67.6mm were used in the experiments. In response to the electrical current, liner acceleration results from Lorentz forces that are described in this work. An analytic formula for liner acceleration under these conditions is presented. Liner acceleration was related to peak current, current-time history, liner mass, and liner geometry. Also, MHD codes were used to illustrate the acceleration and jet formation processes. The experimental approach utilized flash x-rays to observe initial liner motion, liner collapse on axis, and jet formation. Results indicated that fairly well aligned jets could be obtained with ductility less than but approaching those driven by high explosives. This paper presents analysis and experimental results obtained.
C1 [Grace, Fred] Enig Associates Inc, Bethesda, MD 20814 USA.
[Degnan, James; Lehr, Mark] US Air Force, Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
[Roth, Chris; Gale, Donald] Sci Applicat Int Corp, Albuquerque, NM 87106 USA.
[Coffey, Sean] NumerEx LLC, Corrales, NM 87048 USA.
RP Grace, F (reprint author), Enig Associates Inc, Suite 620,4600 East West Hwy, Bethesda, MD 20814 USA.
NR 9
TC 0
Z9 0
U1 0
U2 0
PU DESTECH PUBLICATIONS, INC
PI LANCASTER
PA 439 DUKE STREET, LANCASTER, PA 17602-4967 USA
BN 978-1-60595-149-2
PY 2014
BP 15
EP 26
PG 12
WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied
SC Materials Science; Mechanics; Physics
GA BC2IL
UT WOS:000350969700004
ER
PT J
AU Courtney, E
Courtney, A
Summer, PD
Courtney, M
AF Courtney, Elya
Courtney, Amy
Summer, Peter David
Courtney, Michael
BE Ames, RG
Boeka, RD
TI PERFORMANCE TESTING OF LEAD FREE PRIMERS: BLAST WAVES, VELOCITY
VARIATIONS AND ENVIRONMENTAL TESTING
SO 28TH INTERNATIONAL SYMPOSIUM ON BALLISTICS, VOLS 1 AND 2
LA English
DT Proceedings Paper
CT 28th International Symposium on Ballistics
CY SEP 22-26, 2014
CL Atlanta, GA
SP Natl Defense Ind Assoc, Int Ballist Soc
AB Results are presented for lead free primers based on diazodinitrophenol (DDNP) compared tests on lead styphnate based primers. First, barrel friction measurements in 5.56 mm NATO are presented. Second, shot to shot variations in blast waves are presented as determined by detonating primers in a 7.62x51mm rifle chamber with a firing pin, but without any powder or bullet loaded and measuring the blast wave at the muzzle with a high speed pressure transducer. Third, variations in primer blast waves, muzzle velocities, and ignition delay are presented after environmental conditioning (150 days) for two lead based and two DDNP based primers under cold and dry (-25 degrees C, 0% relative humidity), ambient (20 degrees C, 50% relative humidity), and hot & humid (50 degrees C, 100% relative humidity) conditions in 5.56 mm NATO. Taken together, these results indicate that DDNP based primers are not sufficiently reliable for service use.
C1 [Courtney, Elya; Courtney, Amy; Courtney, Michael] BTG Res, Colorado Springs, CO 80962 USA.
[Summer, Peter David] US Air Force Acad, Colorado Springs, CO 80840 USA.
RP Courtney, E (reprint author), BTG Res, POB 62541, Colorado Springs, CO 80962 USA.
EM michael_courtney@alum.mit.edu
NR 7
TC 0
Z9 0
U1 0
U2 1
PU DESTECH PUBLICATIONS, INC
PI LANCASTER
PA 439 DUKE STREET, LANCASTER, PA 17602-4967 USA
BN 978-1-60595-149-2
PY 2014
BP 444
EP 454
PG 11
WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied
SC Materials Science; Mechanics; Physics
GA BC2IL
UT WOS:000350969700054
ER
PT B
AU Hansen, LM
AF Hansen, Lynn M.
BE Kane, C
Murauskaite, E
TI Cautious optimism The Helsinki Process as a model for negotiations in
the Middle East
SO REGIONAL SECURITY DIALOGUE IN THE MIDDLE EAST: CHANGES, CHALLENGES AND
OPPORTUNITIES
SE UCLA Center for Middle East Development CMED Series
LA English
DT Article; Book Chapter
C1 [Hansen, Lynn M.] Natl Intelligence Council, Mclean, VA USA.
[Hansen, Lynn M.] US Intelligence Community, Bethesda, MD USA.
[Hansen, Lynn M.] US Arms Control & Disarmament Agcy, Washington, DC USA.
[Hansen, Lynn M.] USAF Acad, Colorado Springs, CO USA.
[Hansen, Lynn M.] Utah State Univ, Logan, UT 84322 USA.
[Hansen, Lynn M.] Free Univ Berlin, Berlin, Germany.
NR 10
TC 0
Z9 0
U1 0
U2 0
PU ROUTLEDGE
PI ABINGDON
PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND
BN 978-1-138-01849-5; 978-1-315-77386-5; 978-1-138-01838-9
J9 UCLA CENT MID E DEV
PY 2014
VL 6
BP 19
EP 37
PG 19
WC Area Studies; International Relations
SC Area Studies; International Relations
GA BC1KO
UT WOS:000350226900003
ER
PT S
AU Evans, JR
Kruse, FA
AF Evans, Jack R.
Kruse, Fred A.
GP IEEE
TI DETERMINATION OF SNOW DEPTH USING ELEVATION DIFFERENCES DETERMINED BY
INTERFEROMETRIC SAR (INSAR)
SO 2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS
LA English
DT Proceedings Paper
CT IEEE Joint International Geoscience and Remote Sensing Symposium
(IGARSS) / 35th Canadian Symposium on Remote Sensing
CY JUL 13-18, 2014
CL Quebec City, CANADA
SP IEEE, Inst Elect & Elect Engineers, Geoscience & Remote Sensing Soc, Canadian Remote Sensing Soc
DE Snow Depth; Interferometric SAR
AB Snow accumulation is a significant factor for determining sources and amounts of seasonal runoff for a variety of applications. Most current estimates of snow depth, however, consist of manual (spot) measurements combined with weather models, and don't capture snow depth information at appropriate scales for regional forecasting or local use. Remote sensing data have the potential to determine snow depth and other parameters for large areas that are difficult to measure directly using other methods. The Naval Postgraduate School (NPS) is using Interferometric Synthetic Aperture Radar (InSAR) to explore snow depth estimation approaches. SAR interferograms are calculated to produce digital elevation models (DEMs) for both snow-off and snow-on conditions - DEM subtraction provides an estimate of the snow depth over the area of the remotely sensed data.
C1 [Evans, Jack R.] Naval Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA.
RP Evans, JR (reprint author), USAF, HQ AFWA A3N, Offutt AFB, NE 68113 USA.
NR 5
TC 2
Z9 2
U1 1
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2153-6996
BN 978-1-4799-5775-0
J9 INT GEOSCI REMOTE SE
PY 2014
BP 962
EP 965
DI 10.1109/IGARSS.2014.6946586
PG 4
WC Engineering, Electrical & Electronic; Geosciences, Multidisciplinary;
Remote Sensing
SC Engineering; Geology; Remote Sensing
GA BC0WG
UT WOS:000349688101106
ER
PT S
AU Jang, WY
Park, J
Fuchs, Z
Parada, F
Hanna, P
Derov, J
Noyola, M
AF Jang, Woo-Yong
Park, James
Fuchs, Zachariah
Parada, Francisco
Hanna, Philip
Derov, John
Noyola, Michael
GP IEEE
TI MULTISPECTRAL TARGET RECOGNITION USING ADAPTIVE RADAR AND INFRARED DATA
INTEGRATION
SO 2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS
LA English
DT Proceedings Paper
CT IEEE Joint International Geoscience and Remote Sensing Symposium
(IGARSS) / 35th Canadian Symposium on Remote Sensing
CY JUL 13-18, 2014
CL Quebec City, CANADA
SP IEEE, Inst Elect & Elect Engineers, Geoscience & Remote Sensing Soc, Canadian Remote Sensing Soc
DE Data integration; Multispectral target recognition; Posterior fusion;
Data compression
AB We report a RF and IR data-integration strategy based on a probabilistic (or a distribution) model. At the heart of our approach is the ability to extract the probability density functions (pdfs) from the sensed dataset for RF and IR respectively followed by the detection or target identification process based on posterior fusion (i.e., the product of individual pdfs) and Bayesian decision process. The pdf-acquisition processes in RF and IR modules have been further refined with clutter models and data-compression techniques.
C1 [Jang, Woo-Yong; Park, James; Fuchs, Zachariah; Parada, Francisco; Hanna, Philip; Derov, John; Noyola, Michael] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Jang, WY (reprint author), Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
NR 10
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2153-6996
BN 978-1-4799-5775-0
J9 INT GEOSCI REMOTE SE
PY 2014
PG 2
WC Engineering, Electrical & Electronic; Geosciences, Multidisciplinary;
Remote Sensing
SC Engineering; Geology; Remote Sensing
GA BC0WG
UT WOS:000349688100048
ER
PT B
AU Smart, T
AF Smart, Tracy
BE Bridges, D
NealSmith, J
Mills, AJ
TI Fast Women in the Twenty-First Century
SO ABSENT AVIATORS: GENDER ISSUES IN AVIATION
LA English
DT Article; Book Chapter
C1 [Smart, Tracy] USAF, Washington, DC USA.
NR 14
TC 0
Z9 0
U1 0
U2 0
PU ASHGATE PUBLISHING LTD
PI ALDERSHOT
PA GOWER HOUSE, CROFT ROAD, ALDERSHOT GU11 3HR, ENGLAND
BN 978-1-4724-3339-8; 978-1-4724-3338-1
PY 2014
BP 91
EP 96
PG 6
WC Transportation
SC Transportation
GA BB9XK
UT WOS:000348772800004
ER
PT B
AU Sutter, TM
Creasy, TS
Dickerson, MB
Justice, RS
AF Sutter, Thomas M.
Creasy, Terry S.
Dickerson, Matthew B.
Justice, Ryan S.
GP ASME
TI POWER RESPONSE OF A MUSCLE ACTUATOR DRIVEN BY A REGENERATIVE, ENZYMATIC
PRESSURIZATION MECHANISM
SO PROCEEDINGS OF THE ASME CONFERENCE ON SMART MATERIALS ADAPTIVE
STRUCTURES AND INTELLIGENT SYSTEMS - 2013, VOL 2
LA English
DT Proceedings Paper
CT ASME Conference on Smart Materials, Adaptive Structures and Intelligent
Systems
CY SEP 16-18, 2013
CL Snowbird, UT
SP ASME, Aerospace Div, Gen Motors, Dynalloy Inc, Parker Hannifin, Teledyne Sci & Imag, IOP Publish, Sage Publish, NextGen Aeronaut, Natl Sci Fdn, Boeing, GE Global Res
AB Inspired by the characteristics of biological muscles, rubber muscle actuators (RMAs) are lightweight and compliant structures that deliver high power/weight ratios and are currently under investigation for use in soft robotics, prosthetics, and specialized aircraft. RMA actuation is accomplished by inflating the structure's air bladder, which results in the contraction of the muscle. In this proceedings paper, we describe the use of gaseous products from enzymatically-catalyzed reactions to pressurize and drive the motion of RMAs. Specifically, this paper details the power envelope of RMAs driven by the urease-catalyzed production of CO2, under dynamic loading conditions. The use of enzymatically catalyzed, gas-producing reactions is advantageous for powering RMAs, as these systems may be self-regulating and self-regenerating. Reaction design parameters for sizing the gas source to RMA power requirements and power envelope results are reported for gas-powered actuator dynamics tested on a linear motion test assembly. The power response to increasing loads reflects the partial pressure over the reaction slurry; therefore, the chemistry and reactor scale affect the entire structure's efficiency. We outline the reactor space-time design constraints that facilitate a tailored power response for urease catalyzed gas generation sources.
C1 [Sutter, Thomas M.] Univ Dayton, Res Inst, Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
[Creasy, Terry S.] Texas A&M Univ, Dept Mech Engn, College Stn, TX USA.
[Dickerson, Matthew B.] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH USA.
[Justice, Ryan S.] Air Force Res Lab, Mat & Mfg Directorate, Syst Support Div, Wright Patterson AFB, OH USA.
RP Sutter, TM (reprint author), Univ Dayton, Res Inst, Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
FU Air Force Office of Scientific Research Low
FX The authors acknowledge support from the Air Force Office of Scientific
Research Low 'Density Materials Program and the program's manager,
Joycelyn Harrison.
NR 14
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-5604-8
PY 2014
PG 6
WC Automation & Control Systems; Materials Science, Multidisciplinary
SC Automation & Control Systems; Materials Science
GA BC1BH
UT WOS:000349928200049
ER
PT S
AU Garcia, E
Cao, YC
Casbeer, DW
AF Garcia, Eloy
Cao, Yongcan
Casbeer, David W.
GP IEEE
TI Cooperative Control with General Linear Dynamics and Limited
Communication: Centralized and Decentralized Event-Triggered Control
Strategies
SO 2014 AMERICAN CONTROL CONFERENCE (ACC)
SE Proceedings of the American Control Conference
LA English
DT Proceedings Paper
CT American Control Conference
CY DEC 04-06, 2014
CL Portland, OR
SP American Automat Control Council, Boeing, GE Global Res, Honeywell, MathWorks, Mitsubishi Elect Res Lab, National Instruments, Bosch Grp, dSPACE, Eaton, Elsevier, Inst Engn Technol, Maplesoft Engn Solut, Quanser, Soc Ind Appl Math, Springer, Taylor & Francis Grp, Journal Franklin Inst, Visual Solut, Wiley, Swiss Fed Inst Technol Zurich, Dept Mech & Proc Engn
ID HETEROGENEOUS MULTIAGENT SYSTEMS; DOUBLE-INTEGRATOR DYNAMICS; SUFFICIENT
CONDITIONS; CONSENSUS PROBLEMS; AVERAGE CONSENSUS; DELAYS;
SYNCHRONIZATION; STABILITY; NETWORKS
AB This paper presents event-triggered control techniques for the consensus problem with general linear dynamics. A novel consensus protocol is proposed, where each agent implements a model of the decoupled dynamics of its neighbors. We first provide a simple centralized condition to motivate the problem. Then, the focus is placed on designing decentralized consensus protocols. The decentralized approach proposed in this paper not only avoids the need for continuous communication between agents but also provides a decentralized and asynchronous method for transmission of information. This method gives more flexibility for scheduling information broadcasting compared to periodic and sampled-data implementations. Finally conditions are provided in order to guarantee positive inter-event times.
C1 [Garcia, Eloy] Air Force Res Lab, Control Sci Ctr Excellence, Wright Patterson AFB, OH 45433 USA.
RP Garcia, E (reprint author), Air Force Res Lab, Control Sci Ctr Excellence, Wright Patterson AFB, OH 45433 USA.
EM elgarcia@infoscitex.com
OI Cao, Yongcan/0000-0003-3383-0185
NR 32
TC 6
Z9 6
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0743-1619
BN 978-1-4799-3274-0
J9 P AMER CONTR CONF
PY 2014
BP 159
EP 164
PG 6
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BB8EX
UT WOS:000346492600026
ER
PT S
AU Sun, L
Beard, RW
Pack, D
AF Sun, Liang
Beard, Randal W.
Pack, Daniel
GP IEEE
TI Trajectory-Tracking Control Law Design for Unmanned Aerial Vehicles with
an Autopilot in the Loop
SO 2014 AMERICAN CONTROL CONFERENCE (ACC)
SE Proceedings of the American Control Conference
LA English
DT Proceedings Paper
CT American Control Conference
CY DEC 04-06, 2014
CL Portland, OR
SP American Automat Control Council, Boeing, GE Global Res, Honeywell, MathWorks, Mitsubishi Elect Res Lab, National Instruments, Bosch Grp, dSPACE, Eaton, Elsevier, Inst Engn Technol, Maplesoft Engn Solut, Quanser, Soc Ind Appl Math, Springer, Taylor & Francis Grp, Journal Franklin Inst, Visual Solut, Wiley, Swiss Fed Inst Technol Zurich, Dept Mech & Proc Engn
ID AUTONOMOUS VEHICLES
AB This paper presents a strategy of designing a trajectory-tracking control law for unmanned aerial vehicles where an unmodifiable autopilot is incorporated in the closed-loop system. The main contributions of this paper include a novel control structure that enables an explicit design of tracking methods for a system with an unmodifiable autopilot in the loop, and a novel controller that augments the existing control law. To begin with, a controller is developed based on a generalized design model using a Lyapunov-based backstepping technique. To incorporate the constraints due to the unmodifiable autopilot, the design model and the developed controller are augmented by introducing additional terms. Lyapunov stability theory is used to prove that, without any modification of the autopilot, the augmented controller exponentially stabilizes the vehicle to a desired trajectory while the other higher order and attitude states remain bounded. A software-in-the-loop simulation result is presented to validate the strategy. The proposed strategy can be employed to ensure the vehicle remains safe while experimenting with new tracking and path following control options. This type of control design are most useful for systems where the autopilot is unmodifiable, and possibly unknown, as would occur with commercial autopilots being augmented with high level tracking control.
C1 [Sun, Liang] US Air Force Acad, Acad Ctr UAS Res, Colorado Springs, CO 80840 USA.
RP Sun, L (reprint author), US Air Force Acad, Acad Ctr UAS Res, Colorado Springs, CO 80840 USA.
EM solbuaa@gmail.com; beard@byu.edu; daniel.pack@utsa.edu
NR 13
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0743-1619
BN 978-1-4799-3274-0
J9 P AMER CONTR CONF
PY 2014
BP 1390
EP 1395
PG 6
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BB8EX
UT WOS:000346492601154
ER
PT S
AU Garcia, E
Cao, YC
Casbeer, DW
AF Garcia, Eloy
Cao, Yongcan
Casbeer, David W.
GP IEEE
TI Cooperative Control with General Linear Dynamics and Limited
Communication: Periodic Updates
SO 2014 AMERICAN CONTROL CONFERENCE (ACC)
SE Proceedings of the American Control Conference
LA English
DT Proceedings Paper
CT American Control Conference
CY DEC 04-06, 2014
CL Portland, OR
SP American Automat Control Council, Boeing, GE Global Res, Honeywell, MathWorks, Mitsubishi Elect Res Lab, National Instruments, Bosch Grp, dSPACE, Eaton, Elsevier, Inst Engn Technol, Maplesoft Engn Solut, Quanser, Soc Ind Appl Math, Springer, Taylor & Francis Grp, Journal Franklin Inst, Visual Solut, Wiley, Swiss Fed Inst Technol Zurich, Dept Mech & Proc Engn
ID DOUBLE-INTEGRATOR DYNAMICS; MULTIAGENT SYSTEMS; SUFFICIENT CONDITIONS;
CONSENSUS PROBLEMS; SYNCHRONIZATION; STABILITY; NETWORKS
AB This paper studies the consensus problem for a team of agents with general linear dynamics, under directed communication graphs, and subject to limited communication. Transmission of information is not assumed to occur continuously but only at discrete time instants. By assuming a periodic information transmission, two control approaches are proposed. In the first approach a control algorithm is designed for each agent based on models of decoupled dynamics of itself and its neighbors. In the second approach each agent uses Zero-Order-Hold models of the same subset of agents. For both approaches, based on the structure of the communication topology, necessary and sufficient conditions for asymptotic consensus are provided. These conditions define the range of periods that can be implemented. Sufficient conditions are also derived which only require an estimate of the spectral radius of the graph Laplacian.
C1 [Garcia, Eloy] Infoscitex Corp, Control Sci Ctr Excellence, AFRL, Wright Patterson AFB, OH 45433 USA.
RP Garcia, E (reprint author), Infoscitex Corp, Control Sci Ctr Excellence, AFRL, Wright Patterson AFB, OH 45433 USA.
EM elgarcia@infoscitex.com
OI Cao, Yongcan/0000-0003-3383-0185
NR 22
TC 3
Z9 3
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0743-1619
BN 978-1-4799-3274-0
J9 P AMER CONTR CONF
PY 2014
BP 3195
EP 3200
PG 6
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BB8EX
UT WOS:000346492603126
ER
PT S
AU Grymin, DJ
Farhood, M
AF Grymin, David J.
Farhood, Mazen
GP IEEE
TI Two-Step System Identification for Control of Small UAVs Along
Pre-Specified Trajectories
SO 2014 AMERICAN CONTROL CONFERENCE (ACC)
SE Proceedings of the American Control Conference
LA English
DT Proceedings Paper
CT American Control Conference
CY DEC 04-06, 2014
CL Portland, OR
SP American Automat Control Council, Boeing, GE Global Res, Honeywell, MathWorks, Mitsubishi Elect Res Lab, National Instruments, Bosch Grp, dSPACE, Eaton, Elsevier, Inst Engn Technol, Maplesoft Engn Solut, Quanser, Soc Ind Appl Math, Springer, Taylor & Francis Grp, Journal Franklin Inst, Visual Solut, Wiley, Swiss Fed Inst Technol Zurich, Dept Mech & Proc Engn
ID EVENTUALLY PERIODIC-SYSTEMS
AB This paper presents an approach for regulating a small unmanned aerial vehicle (UAV) about a reference trajectory that is obtained using a model of the aircraft derived from flight test data. Stepwise multiple regression is applied to determine relevant explanatory variables in the aerodynamic coefficient models. The aircraft model is used to obtain a dynamically feasible reference trajectory as the solution of an optimal control problem, solved using pseudospectral optimal control software. A discrete-time feedback controller is then designed to regulate the aircraft along the reference trajectory. Simulations in a realistic operational environment demonstrate the capabilities of the approach.
C1 [Grymin, David J.] Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
RP Grymin, DJ (reprint author), Air Force Res Lab, Aerosp Syst Directorate, Wright Patterson AFB, OH 45433 USA.
EM david.grymin.1@us.af.mil; farhood@vt.edu
NR 24
TC 1
Z9 1
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0743-1619
BN 978-1-4799-3274-0
J9 P AMER CONTR CONF
PY 2014
BP 4404
EP 4409
PG 6
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BB8EX
UT WOS:000346492604161
ER
PT S
AU Cao, YC
AF Cao, Yongcan
GP IEEE
TI UAV Circumnavigating an Unknown Target using Range Measurement and
Estimated Range Rate
SO 2014 AMERICAN CONTROL CONFERENCE (ACC)
SE Proceedings of the American Control Conference
LA English
DT Proceedings Paper
CT American Control Conference
CY DEC 04-06, 2014
CL Portland, OR
SP American Automat Control Council, Boeing, GE Global Res, Honeywell, MathWorks, Mitsubishi Elect Res Lab, National Instruments, Bosch Grp, dSPACE, Eaton, Elsevier, Inst Engn Technol, Maplesoft Engn Solut, Quanser, Soc Ind Appl Math, Springer, Taylor & Francis Grp, Journal Franklin Inst, Visual Solut, Wiley, Swiss Fed Inst Technol Zurich, Dept Mech & Proc Engn
DE UAV; Autonomy; Estimation and control; GPS-denied environment
AB The objective of the paper is to design a control algorithm such that a UAV can circumnavigate an unknown target using range-only measurement. By assuming the availability of both range and range rate measurements, a control algorithm is proposed to accomplish the circumnavigation mission, where the associated control input is always bounded. To eliminate the requirement of range rate measurements, an estimated range rate, obtained via a sliding-mode estimator using range measurement, is used to replace the range rate measurement. By carefully choosing parameters in the estimator, range rate can be accurately estimated in finite time thanks to the boundedness of control input under the proposed control algorithm. As a consequence, the circumnavigation mission can still be accomplished using the proposed control algorithm when range rate measurement is replaced by its estimated value obtained from the estimator. This estimator-based control strategy using range-only measurement is desired for small UAVs under GPS-denied environment when limited sensing capability is allowed considering their payload restrictions.
C1 Air Force Res Lab, Control Sci Ctr Excellence, Wright Patterson AFB, OH 45433 USA.
RP Cao, YC (reprint author), Air Force Res Lab, Control Sci Ctr Excellence, Wright Patterson AFB, OH 45433 USA.
OI Cao, Yongcan/0000-0003-3383-0185
NR 11
TC 3
Z9 4
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0743-1619
BN 978-1-4799-3274-0
J9 P AMER CONTR CONF
PY 2014
BP 4581
EP 4586
PG 6
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BB8EX
UT WOS:000346492605027
ER
PT B
AU Haynes, C
Miller, R
AF Haynes, Comas
Miller, Ryan
GP ASME
TI EXERGOGRAVIMETRIC DESIGN FOR INCREASED SOFC SYSTEM POWER DENSITY
SO PROCEEDINGS OF THE ASME 11TH FUEL CELL SCIENCE, ENGINEERING, AND
TECHNOLOGY CONFERENCE, 2013
LA English
DT Proceedings Paper
CT 11th ASME Fuel Cell Science, Engineering, and Technology Conference
CY JUL 14-19, 2013
CL Minneapolis, MN
SP ASME, Adv Energy Syst Div, ASME, Solar Energy Div
ID OXIDE FUEL-CELL
C1 [Haynes, Comas] Georgia Tech Res Inst, Atlanta, GA 30332 USA.
[Miller, Ryan] USAF, Res Lab, Wright Patterson AFB, OH USA.
RP Haynes, C (reprint author), Georgia Tech Res Inst, Atlanta, GA 30332 USA.
FU Air Force Office of Scientific Research
FX The authors wish to thank the Air Force Office of Scientific Research
for its support of the research depicted in the preceding paper (2012
Summer Faculty Fellowship Program).
NR 12
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-5552-2
PY 2014
AR UNSP V001T02A003
PG 9
WC Energy & Fuels; Engineering, Mechanical
SC Energy & Fuels; Engineering
GA BC0ZT
UT WOS:000349884900021
ER
PT S
AU Rivera, J
Hare, F
AF Rivera, Jason
Hare, Forrest
BE Brangetto, P
Maybaum, M
Stinissen, J
TI The Deployment of Attribution Agnostic Cyberdefense Constructs and
Internally Based Cyberthreat Countermeasures
SO 2014 6TH INTERNATIONAL CONFERENCE ON CYBER CONFLICT (CYCON 2014)
SE International Conference on Cyber Conflict
LA English
DT Proceedings Paper
CT 6th International Conference on Cyber Conflict (CyCon)
CY JUN 03-06, 2014
CL Tallinn, ESTONIA
SP IEEE, NATO Cooperat Cyber Def Ctr Excellence, Microsoft, Verint, Intel, Cisco, Lancope, Ixia, IBM
DE active defense; attribution agnostic cyberdefense construct; internally
based cyberthreat countermeasures
AB Conducting active cyberdefense requires the acceptance of a proactive framework that acknowledges the lack of predictable symmetries between malicious actors and their capabilities and intent. Unlike physical weapons such as firearms, naval vessels, and piloted aircraft-all of which risk physical exposure when engaged in direct combat-cyberweapons can be deployed (often without their victims' awareness) under the protection of the anonymity inherent in cyberspace. Furthermore, it is difficult in the cyber domain to determine with accuracy what a malicious actor may target and what type of cyberweapon the actor may wield. These aspects imply an advantage for malicious actors in cyberspace that is greater than for those in any other domain, as the malicious cyberactor, under current international constructs and norms, has the ability to choose the time, place, and weapon of engagement. This being said, if defenders are to successfully repel attempted intrusions, then they must conduct an active cyberdefense within a framework that proactively engages threatening actions independent of a requirement to achieve attribution.
This paper proposes that private business, government personnel, and cyberdefenders must develop a threat identification framework that does not depend upon attribution of the malicious actor, i.e., an attribution agnostic cyberdefense construct. Furthermore, upon developing this framework, network defenders must deploy internally based cyberthreat countermeasures that take advantage of defensive network environmental variables and alter the calculus of nefarious individuals in cyberspace. Only by accomplishing these two objectives can the defenders of cyberspace actively combat malicious agents within the virtual realm.
C1 [Rivera, Jason] US Army, Georgetown Sch Foreign Serv, Washington, DC 20005 USA.
[Hare, Forrest] United States Air Force, Johns Hopkins Sch Adv Int Studies, Washington, DC USA.
RP Rivera, J (reprint author), US Army, Georgetown Sch Foreign Serv, Washington, DC 20005 USA.
EM jhr47@georgetown.edu; fhare@gmu.edu
NR 30
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2325-5366
BN 978-9949-9544-0-7
J9 INT CONF CYBER CONFL
PY 2014
BP 99
EP +
PG 15
WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BC0HW
UT WOS:000349046200008
ER
PT S
AU Hammoud, RI
Sahin, CS
Blasch, EP
Rhodes, BJ
AF Hammoud, Riad I.
Sahin, Cem S.
Blasch, Erik P.
Rhodes, Bradley J.
GP IEEE
TI Multi-Source Multi-Modal Activity Recognition in Aerial Video
Surveillance
SO 2014 IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION
WORKSHOPS (CVPRW)
SE IEEE Computer Society Conference on Computer Vision and Pattern
Recognition Workshops
LA English
DT Proceedings Paper
CT 27th IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
CY JUN 23-28, 2014
CL Columbus, OH
SP Comp Vis Fdn, IEEE, IEEE Comp Soc
AB Recognizing activities in wide aerial/overhead imagery remains a challenging problem due in part to low-resolution video and cluttered scenes with a large number of moving objects. In the context of this research, we deal with two unsynchronized data sources collected in real-world operating scenarios: full-motion videos (FMV) and analyst call-outs (ACO) in the form of chat messages (voice-to-text) made by a human watching the streamed FMV from an aerial platform. We present a multi-source multi-modal activity/event recognition system for surveillance applications, consisting of: (1) detecting and tracking multiple dynamic targets from a moving platform, (2) representing FMV target tracks and chat messages as graphs of attributes, (3) associating FMV tracks and chat messages using a probabilistic graph-based matching approach, and (4) detecting spatial-temporal activity boundaries. We also present an activity pattern learning framework which uses the multi-source associated data as training to index a large archive of FMV videos. Finally, we describe a multi-intelligence user interface for querying an index of activities of interest (AOIs) by movement type and geo-location, and for playing-back a summary of associated text (ACO) and activity video segments of targets-of-interest (TOIs) (in both pixel and geo-coordinates). Such tools help the end-user to quickly search, browse, and prepare mission reports from multi-source data.
C1 [Hammoud, Riad I.; Sahin, Cem S.; Rhodes, Bradley J.] BAE Syst, Burlington, MA 01803 USA.
[Blasch, Erik P.] Air Force Res Lab, Rome, NY USA.
RP Hammoud, RI (reprint author), BAE Syst, Burlington, MA 01803 USA.
EM riad.hammoud@baesystems.com
FU Air Force Research laboratory [FA8750-13-C-0099]
FX 7lhis work was supported under contract number FA8750-13-C-0099 from the
Air Force Research laboratory. The ideas and opinions expressed here are
not official policies of the United States Air Force.; The authors would
like to thank Adnan Bubalo (AFRL), Robert Biehl, Brad GaleQo, Helen Webb
and Michael Schneider (BAE Systems) for their support.
NR 24
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2160-7508
BN 978-1-4799-4309-8
J9 IEEE COMPUT SOC CONF
PY 2014
BP 237
EP +
DI 10.1109/CVPRW.2014.44
PG 2
WC Computer Science, Artificial Intelligence
SC Computer Science
GA BC0TW
UT WOS:000349552300039
ER
PT S
AU Wang, R
Bunyak, F
Seetharaman, G
Palaniappan, K
AF Wang, Rui
Bunyak, Filiz
Seetharaman, Guna
Palaniappan, Kannappan
GP IEEE
TI Static and Moving Object Detection Using Flux Tensor with Split Gaussian
Models
SO 2014 IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION
WORKSHOPS (CVPRW)
SE IEEE Computer Society Conference on Computer Vision and Pattern
Recognition Workshops
LA English
DT Proceedings Paper
CT 27th IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
CY JUN 23-28, 2014
CL Columbus, OH
SP Comp Vis Fdn, IEEE, IEEE Comp Soc
AB In this paper, we present a moving object detection system named Flux Tensor with Split Gaussian models (FTSG) that exploits the benefits of fusing a motion computation method based on spatio-temporal tensor formulation, a novel foreground and background modeling scheme, and a multi-cue appearance comparison. This hybrid system can handle challenges such as shadows, illumination changes, dynamic background, stopped and removed objects. Extensive testing performed on the CVPR 2014 Change Detection benchmark dataset shows that FTSG outperforms state-ofthe-art methods.
C1 [Wang, Rui; Bunyak, Filiz; Palaniappan, Kannappan] Univ Missouri, Dept Comp Sci, Columbia, MO 65211 USA.
[Seetharaman, Guna] US Air Force, Res Lab, Griffiss AFB, NY 13441 USA.
RP Wang, R (reprint author), Univ Missouri, Dept Comp Sci, Columbia, MO 65211 USA.
EM rwc33@missouri.edu; bunyak@missouri.edu; guna@ieee.org;
palaniappank@missouri.edu
NR 14
TC 26
Z9 28
U1 1
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2160-7508
BN 978-1-4799-4309-8
J9 IEEE COMPUT SOC CONF
PY 2014
BP 420
EP +
DI 10.1109/CVPRW.2014.68
PG 3
WC Computer Science, Artificial Intelligence
SC Computer Science
GA BC0TW
UT WOS:000349552300066
ER
PT S
AU Tassev, V
Snure, M
Vangala, S
Kimani, M
Peterson, R
Schunemann, P
AF Tassev, V.
Snure, M.
Vangala, S.
Kimani, M.
Peterson, R.
Schunemann, P.
BE Burgess, D
Owen, G
Rana, H
Zamboni, R
Kajzar, F
Szep, AA
TI Growth and study of nonlinear optical materials for frequency conversion
devices with applications in defence and security
SO OPTICS AND PHOTONICS FOR COUNTERTERRORISM, CRIME FIGHTING, AND DEFENCE
X; AND OPTICAL MATERIALS AND BIOMATERIALS IN SECURITY AND DEFENCE
SYSTEMS TECHNOLOGY XI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Optics and Photonics for Counterterrorism, Crime Fighting,
and Defence X; and Optical Materials and Biomaterials in Security and
Defence Systems Technology XI
CY SEP 22-23, 2014
CL Amsterdam, NETHERLANDS
SP SPIE
DE hydride vapor phase epitaxy; nonlinear optical materials; quasi-phase
matching; orientation patterned templates; frequency conversion devices;
laser sources in the mid IR and THz region
ID GAAS FILMS; ABSORPTION; HVPE; GAP; MORPHOLOGIES; THICK
AB A series of nonlinear materials including GaAs, GaP, and ZnSe have been examined to determine their suitability for non-linear frequency conversion devices (FCD) and more specifically their use as high power, compact and broadly tunable IR and THz sources for defense and security applications. The more mature GaAs was investigated to reveal the causes for the optical losses that restrict achievement of higher conversion efficiency in quasi-phasematched FCD, while the efforts with GaP were oriented in developing simple, cost effective techniques for fabrication of orientation patterned (OP) templates and optimizing the subsequent thick HVPE growth on these templates. Thus, average growth rates of 50-70 mu m/h were achieved in up to 8-hour long experiments. High optical layer quality was achieved by suitable control of the process parameters. The optimal orientation of the pattern was determined and used as essential feedback aiming to improve the template preparation. This led to the production of the first 300-400 mu m thick device quality OPGaP. Efforts to suppress the parasitic nucleation during growths with longer duration or to achieve thicker layers by a 2 step growth process were also made. The main challenge with the newer candidate, OPZnSe, was to establish suitable regimes for hydrothermal growth on plain (001) ZnSe seeds grown by chemical vapor deposition. Two different temperature ranges, 330-350 degrees C and 290-330 degrees C, were investigated. The mineralized concentration was also manipulated to accelerate the growth in (111) direction and, thus, to improve the growth in (001) direction. The next material in the line is GaN. The traditional HVPE approach will be combined with a growth at low reactor pressure. Growths will be performed in the next sequence: growth on thin GaN layers grown by MOCVD on sapphire wafers, growth on half-patterned GaN templates with different orientations and, finally, growth on OPGaN templates.
C1 [Tassev, V.; Snure, M.; Vangala, S.; Kimani, M.; Peterson, R.] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Tassev, V (reprint author), Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
EM vladimir.tassev@wpafb.af.mil
NR 30
TC 2
Z9 2
U1 2
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-316-8
J9 PROC SPIE
PY 2014
VL 9253
AR 925318
DI 10.1117/12.2067345
PG 12
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BB9ZT
UT WOS:000348835800036
ER
PT J
AU Bianchini, A
AF Bianchini, Alessandra
TI Frohlich Theory-Based Approach for Analysis of Stress Distribution in a
Layered System Case Study
SO TRANSPORTATION RESEARCH RECORD
LA English
DT Article
AB The California bearing ratio (CBR) procedure for the design of airfield flexible pavements was originally developed in the 1940s for supporting new heavy bombers and reviewed in the 1970s to allow handling multiwheel tire groups. In view of an active debate at the International Civil Aviation Organization level on further adjustments to the design procedure, a U.S. Army Engineer Research and Development Center (ERDC) research team reformulated the original CBR procedure. The new CBR design procedure was redefined with the introduction of Frohlich's theory for computing the pavement thickness and validated through full-scale testing. This study evaluated the influence of each layer in the stress distribution with the final objective of recommending specific values of the Frohlich stress concentration factor. The data for this investigation were collected during full-scale testing at the ERDC in 2008. The analysis allowed identification of several influencing factors in the stress distribution for computing the stress acting at the top of the subgrade. Such factors included the subbase and subgrade CBR, the thickness of the subbase layer, and the stress distribution represented by the respective it factor of the layer group. The linear regression confirmed the statistical importance of these variables in assessing stress distribution above the subgrade. This case study provided encouraging results for additional investigations on the stress distribution within a layered system with the objective of quantifying more accurately the stress acting at the top of the subgrade.
C1 [Bianchini, Alessandra] US Army Engineer Res & Dev Ctr, Vicksburg, MS 39180 USA.
RP Bianchini, A (reprint author), Air Force Civil Engn Ctr, 138 Barnes Dr,Suite 2, Tyndall AFB, FL 32403 USA.
EM alessandra.bianchini@usace.army.mil
NR 16
TC 0
Z9 0
U1 1
U2 1
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0361-1981
EI 2169-4052
J9 TRANSPORT RES REC
JI Transp. Res. Record
PY 2014
IS 2462
BP 61
EP 67
DI 10.3141/2462-08
PG 7
WC Engineering, Civil; Transportation; Transportation Science & Technology
SC Engineering; Transportation
GA CB2YX
UT WOS:000349495500009
ER
PT J
AU Chabanov, AA
Smith, K
Carroll, T
Vitebskiy, I
AF Chabanov, A. A.
Smith, K.
Carroll, T.
Vitebskiy, I.
GP IEEE
TI Metal-Dielectric Photonic Structures with Extreme Directionality: A
Concept of Wide-Aperture Omnidirectional Isolator
SO 2014 8TH INTERNATIONAL CONGRESS ON ADVANCED ELECTROMAGNETIC MATERIALS IN
MICROWAVES AND OPTICS (METAMATERIALS)
LA English
DT Proceedings Paper
CT 8th International Congress on Advanced Electromagnetic Materials in
Microwaves and Optics (Metamaterials)
CY AUG 25-28, 2014
CL Copenhagen, DENMARK
AB Photonic structures involving metallic nanolayers can display extreme directionality. Here we further show that magnetophotonic structure involving metallic nanolayers can behave as a wide-aperture omnidirectional isolator. It transmits light in a single (forward) direction, while the light incident from the opposite side is reflected back to space regardless of polarization and direction of incidence.
C1 [Chabanov, A. A.; Smith, K.] Univ Texas San Antonio, Dept Phys & Astron, 1 UTSA Circle, San Antonio, TX 78249 USA.
[Carroll, T.; Vitebskiy, I.] Wright Petterson AFB, Air Force Res Lab, Sesors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Chabanov, AA (reprint author), Univ Texas San Antonio, Dept Phys & Astron, 1 UTSA Circle, San Antonio, TX 78249 USA.
EM andrey.chabanov@utsa.edu
NR 3
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-3452-2
PY 2014
PG 3
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BC0JJ
UT WOS:000349110600026
ER
PT S
AU Baumann, SM
Keenan, C
Marciniak, MA
Perram, GP
AF Baumann, Sean M.
Keenan, Cameron
Marciniak, Michael A.
Perram, Glen P.
BE Exarhos, GJ
Gruzdev, VE
Menapace, JA
Ristau, D
Soileau, MJ
TI Spectral and temperature-dependent infrared emissivity measurements of
painted metals for improved temperature estimation during laser damage
testing
SO LASER-INDUCED DAMAGE IN OPTICAL MATERIALS: 2014
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT SPIE Laser Damage - 46th Annual Symposium on Optical Materials for High
Power Lasers
CY SEP 14-17, 2014
CL National Institute of Standards andTechnology, Boulder, CO
SP SPIE, Lawrence Livermore Natl Lab, Laser Components GmbH, Spica Technologies Inc, Quantel USA
HO National Institute of Standards andTechnology
DE laser lethality; temperature-dependent emissivity; spectral emissivity;
infrared imaging Fourier transform spectroscopy; painted metals
ID RADIATION
AB A database of spectral and temperature-dependent emissivities was created for painted Al-alloy laser-damage-testing targets for the purpose of improving the uncertainty to which temperature on the front and back target surfaces may be estimated during laser-damage testing. Previous temperature estimates had been made by fitting an assumed gray-body radiance curve to the calibrated spectral radiance data collected from the back surface using a Telops Imaging Fourier Transform Spectrometer (IFTS). In this work, temperature-dependent spectral emissivity measurements of the samples were made from room temperature to 500 degrees C using a Surface Optics Corp. SOC-100 Hemispherical Directional Reflectometer (HDR) with Nicolet FTS. Of particular interest was a high-temperature matte-black enamel paint used to coat the rear surfaces of the Al-alloy samples. The paint had been assumed to have a spectrally flat and temperature-invariant emissivity. However, the data collected using the HDR showed both spectral variation and temperature dependence. The uncertainty in back-surface temperature estimation during laser-damage testing made using the measured emissivities was improved from greater than +/- 10 degrees C to less than +/- 5 degrees C for IFTS pixels away from the laser burn-through hole, where temperatures never exceeded those used in the SOC-100 HDR measurements. At beam center, where temperatures exceeded those used in the SOC-100 HDR, uncertainty in temperature estimates grew beyond those made assuming gray-body emissivity. Accurate temperature estimations during laser-damage testing are useful in informing a predictive model for future high-energy-laser weapon applications.
C1 [Baumann, Sean M.; Keenan, Cameron; Marciniak, Michael A.; Perram, Glen P.] US Air Force, Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
RP Baumann, SM (reprint author), US Air Force, Inst Technol, Dept Engn Phys, 2950 Hobson Way, Wright Patterson AFB, OH 45433 USA.
EM michael.marciniak@afit.edu
NR 6
TC 0
Z9 0
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-300-7
J9 PROC SPIE
PY 2014
VL 9237
AR 923713
DI 10.1117/12.2068435
PG 12
WC Materials Science, Multidisciplinary; Materials Science, Coatings &
Films; Optics
SC Materials Science; Optics
GA BC0RK
UT WOS:000349399600025
ER
PT S
AU Shannon, JE
Richardson, CW
Dyer, JW
AF Shannon, Jeremy E.
Richardson, Christopher W.
Dyer, John W.
GP IEEE
TI Automated HITS to LASAR Translation
SO 2014 IEEE AUTOTESTCON
SE IEEE Autotestcon
LA English
DT Proceedings Paper
CT 50th Anniversary of IEEE AUTOTEST Conference
CY SEP 15-18, 2014
CL St Louis, MO
SP IEEE, IEEE Aerosp & Elect Syst Soc, IEEE Instrumentat & Measurement Soc
DE HITS; LASAR; translation; automated test equipment; rehost; digital
circuit simulation; fault diagnostics; obsolescence; modernization; TPS
AB HITS (Hierarchical Integrated Test Simulator) and LASAR (Logic Automated Stimulus And Response) are two software platforms used for simulating digital circuits, determining their operation under specified faulty conditions, and judging the percentage of user-specified faults that are uniquely detected given a user-specified set of digital input patterns. These software platforms also generate files that may be imported onto automated test equipment (ATE) to allow the simulated input patterns to be applied to actual digital circuits and facilitate the detection of actual circuit faults. HITS is natively utilized on a variety of now-obsolete ATE systems and is, itself, obsolete. LASAR, on the other hand, is more technologically capable, manufacturer-supported, and utilized on myriad modern ATE systems. The need to migrate existing test application hardware and software from obsolete ATE systems that utilize HITS to supportable ATE systems that utilize LASAR presents the opportunity to simplify the migration effort by devising a method to automatically translate the simulation source data from HITS format into LASAR format.
This paper describes the development and evaluation of a software application that automatically translates HITS source data into LASAR source data with an emphasis on minimizing the need for manual intervention in the translation process. The similarities between HITS and LASAR source data formats allow for much of the HITS data to be faithfully translated; however some differences between the two present seemingly insurmountable obstacles that precipitate the need for manual translation efforts. These similarities and differences are described in detail. In addition, the translator application is evaluated according to three criteria: the total test duration for each translated simulation, the fault coverage attained for each translated simulation, and the estimated development cost savings realized through the use of the translator application. A sample of twelve existing LASAR simulations, for which the source data had been previously generated independently of existing HITS simulations for the same digital circuits, was used as a baseline to evaluate the performance of LASAR source data automatically translated from HITS source data.
The results indicate that the difference in total test duration between the existing and translated LASAR simulations is negligible, with an average difference of 7.96 ms for the sample set. The fault coverage rate attained, without further manual optimization, by the translated LASAR simulations varied widely with an average of 72% and one out of three attaining a fault coverage rate above 95%, exceeding the organizational standard. Based on man-hour estimates of several individual LASAR simulation development tasks, utilizing the translator application was determined to reduce the development cost of LASAR simulations by 87%. Overall, the translator application was found to be an effective tool for translating HITS simulation source data into LASAR simulation source data.
C1 [Shannon, Jeremy E.; Richardson, Christopher W.] 76th Software Maintenance Grp, Tinker AFB, OK 73145 USA.
[Dyer, John W.] Univ Oklahoma, Sch Elect & Elect Engn, Norman, OK 73019 USA.
RP Shannon, JE (reprint author), 76th Software Maintenance Grp, Tinker AFB, OK 73145 USA.
EM jeremy.shannon@us.af.mil; christopher.richardson.19@us.af.mil;
jwdyer@ou.edu
NR 7
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1088-7725
BN 978-1-4799-3005-0
J9 IEEE AUTOTESTCON
PY 2014
PG 9
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BB9WL
UT WOS:000348736600033
ER
PT S
AU Alsing, PM
Smith, AM
Fanto, ML
Tison, CC
Lott, GE
AF Alsing, P. M.
Smith, A. M.
Fanto, M. L.
Tison, C. C.
Lott, G. E.
BE Gruneisen, MT
Dusek, M
Rarity, JG
Lewis, KL
Hollins, RC
Merlet, TJ
Toet, A
TI Programming Non-Trivial Algorithms in the Measurement Based Quantum
Computation Model
SO EMERGING TECHNOLOGIES IN SECURITY AND DEFENCE II AND
QUANTUM-PHYSICS-BASED INFORMATION SECURITY III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Emerging Technologies in Security and Defence II; and
Quantum-Physics-based Information Security III
CY SEP 22-23, 2014
CL Amsterdam, NETHERLANDS
SP SPIE
ID ENTANGLEMENT; STATE
AB We provide a set of prescriptions for implementing a quantum circuit model algorithm as measurement based quantum computing (MBQC) algorithm(1,2) via a large cluster state. As means of illustration we draw upon our numerical modeling experience to describe a large graph state capable of searching a logical 8 element list (a non-trivial version of Grover's algorithm(3) with feedforward). We develop several prescriptions based on analytic evaluation of cluster states and graph state equations which can be generalized into any circuit model operations. Such a resulting cluster state will be able to carry out the desired operation with appropriate measurements and feed forward error correction. We also discuss the physical implementation and the analysis of the principal 3-qubit entangling gate (Toffoli) required for a non-trivial feedforward realization of an 8-element Grover search algorithm.
C1 [Alsing, P. M.; Fanto, M. L.; Tison, C. C.; Lott, G. E.] Air Force Res Lab, Informat Directorate, Rome, NY 13441 USA.
RP Alsing, PM (reprint author), Air Force Res Lab, Informat Directorate, 525 Brooks Rd, Rome, NY 13441 USA.
EM paul.alsing@us.af.mil
NR 18
TC 0
Z9 0
U1 0
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-317-5
J9 PROC SPIE
PY 2014
VL 9254
DI 10.1117/12.2067490
PG 19
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BB9ZU
UT WOS:000348836800007
ER
PT S
AU Fanto, ML
Smith, AM
Alsing, PM
Tison, CC
Preble, SF
Lott, GE
Osman, JM
Szep, A
Kim, R
AF Fanto, Michael L.
Smith, A. Matthew
Alsing, Paul M.
Tison, Christopher C.
Preble, Stefan F.
Lott, Gordon E.
Osman, Joseph M.
Szep, Attila
Kim, Richard
BE Gruneisen, MT
Dusek, M
Rarity, JG
Lewis, KL
Hollins, RC
Merlet, TJ
Toet, A
TI A PERIODIC PROBABILISTIC PHOTONIC CLUSTER STATE GENERATOR
SO EMERGING TECHNOLOGIES IN SECURITY AND DEFENCE II AND
QUANTUM-PHYSICS-BASED INFORMATION SECURITY III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Emerging Technologies in Security and Defence II; and
Quantum-Physics-based Information Security III
CY SEP 22-23, 2014
CL Amsterdam, NETHERLANDS
SP SPIE
DE quantum; entangled photons; spontaneous parametric down-conversion; four
wave mixing
AB The research detailed in this paper describes a Periodic Cluster State Generator (PCSG) consisting of a monolithic integrated waveguide device that employs four wave mixing, an array of probabilistic photon guns, single mode sequential entanglers and an array of controllable entangling gates between modes to create arbitrary cluster states. Utilizing the PCSG one is able to produce a cluster state with nearest neighbor entanglement in the form of a linear or square lattice. Cluster state resources of this type have been proven to be able to perform universal quantum computation.
C1 [Fanto, Michael L.; Alsing, Paul M.; Lott, Gordon E.; Osman, Joseph M.] Air Force Res Lab, Rome, NY USA.
RP Fanto, ML (reprint author), Air Force Res Lab, Rome, NY USA.
NR 20
TC 1
Z9 1
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-317-5
J9 PROC SPIE
PY 2014
VL 9254
AR 92540J
DI 10.1117/12.2067493
PG 8
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BB9ZU
UT WOS:000348836800008
ER
PT S
AU Gruneisen, MT
Sickmiller, BA
Flanagan, MB
Black, JP
Stoltenberg, KE
Duchane, AW
AF Gruneisen, Mark T.
Sickmiller, Brett A.
Flanagan, Michael B.
Black, James P.
Stoltenberg, Kurt E.
Duchane, Alexander W.
BE Gruneisen, MT
Dusek, M
Rarity, JG
Lewis, KL
Hollins, RC
Merlet, TJ
Toet, A
TI Adaptive spatial filtering for daytime satellite quantum key
distribution
SO EMERGING TECHNOLOGIES IN SECURITY AND DEFENCE II AND
QUANTUM-PHYSICS-BASED INFORMATION SECURITY III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Emerging Technologies in Security and Defence II; and
Quantum-Physics-based Information Security III
CY SEP 22-23, 2014
CL Amsterdam, NETHERLANDS
SP SPIE
DE quantum key distribution; adaptive optics; sky radiance; quantum
information; cryptography
ID NETWORK
AB The rate of secure key generation (SKG) in quantum key distribution (QKD) is adversely affected by optical noise and loss in the quantum channel. In a free-space atmospheric channel, the scattering of sunlight into the channel can lead to quantum bit error ratios (QBERs) sufficiently large to preclude SKG. Furthermore, atmospheric turbulence limits the degree to which spatial filtering can reduce sky noise without introducing signal losses. A system simulation quantifies the potential benefit of tracking and higher-order adaptive optics (AO) technologies to SKG rates in a daytime satellite engagement scenario. The simulations are performed assuming propagation from a low-Earth orbit (LEO) satellite to a terrestrial receiver that includes an AO system comprised of a Shack-Hartmann wave-front sensor (SHWFS) and a continuous-face-sheet deformable mirror (DM). The effects of atmospheric turbulence, tracking, and higher-order AO on the photon capture efficiency are simulated using statistical representations of turbulence and a time-domain wave-optics hardware emulator. Secure key generation rates are then calculated for the decoy state QKD protocol as a function of the receiver field of view (FOV) for various pointing angles. The results show that at FOVs smaller than previously considered, AO technologies can enhance SKG rates in daylight and even enable SKG where it would otherwise be prohibited as a consequence of either background optical noise or signal loss due to turbulence effects.
C1 [Gruneisen, Mark T.; Duchane, Alexander W.] Air Force Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
RP Gruneisen, MT (reprint author), Air Force Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA.
NR 26
TC 2
Z9 2
U1 1
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-317-5
J9 PROC SPIE
PY 2014
VL 9254
AR 925404
DI 10.1117/12.2071278
PG 14
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BB9ZU
UT WOS:000348836800002
ER
PT S
AU Leslie, CJ
Kim, HJ
Chen, H
Walker, KM
Boakye, EE
Chen, C
Carney, CM
Cinibulk, MK
Chen, MY
AF Leslie, C. J.
Kim, H. J.
Chen, H.
Walker, K. M.
Boakye, E. E.
Chen, C.
Carney, C. M.
Cinibulk, M. K.
Chen, M. -Y.
BE Ohji, T
Colombo, P
Naito, M
Garay, JE
TI POLYMER-DERIVED CERAMICS FOR DEVELOPMENT OF ULTRA-HIGH TEMPERATURE
COMPOSITES
SO Innovative Processing and Manufacturing of Advanced Ceramics and
Composites II
SE Ceramic Transactions
LA English
DT Proceedings Paper
CT 10th Pacific Rim Conference on Ceramic and Glass Technology
CY JUN 02-06, 2013
CL Coronado, CA
ID REACTIVE MELT INFILTRATION
AB The Ceramics Manufacturing and Processing Research Team at the Air Force Research Laboratory has employed polymer derived ceramics in the development of a number of ultra-high temperature composite systems for hypersonic flight applications. For leading edge applications, SiC fiber reinforced UHTCs have been fabricated through lamination of woven SiC fabrics and filament wound unidirectional tapes, both impregnated with HfB2-filled SiC polymeric precursor slurries. Fabric laminates showed improved matrix density within the fiber tows compared to commercially available SiCf/SiC preforms evaluated in previous work. Good infiltration of the laminates was achieved with HfB2 slurry pressure infiltration followed by polymer infiltration and pyrolysis processing using a polycarbosilane SiC precursor (SMP-10) pyrolyzed at 1300 degrees C. The resulting composite contained 30 vol% fibers and had a density of 3.97 g/cm(3). For the filament wound composites, a range of slurry formulations and heat treatments were evaluated. It was found that impregnation using a slurry of HfB2 powder, binder and methylphenyl silicone (SR355S) polymeric SiC precursor in acetone, with a V-HfB2:V-polymers ratio of 0.5, a V-Binder:V-SR355S ratio of 2, and a total solids loading of 8 vol%, a one hour autoclave cure at 425 degrees C and 1.4 MPa pressure and pyrolysis at 1350 degrees C resulted in relatively crack-free composites with uniform fiber distributions. For acreage thermal protection (TPS) applications, a hybrid TPS system, consisting of a carbon fiber reinforced SiC face sheet and stiffeners, silicon oxycarbide insulating foam and ceramic adhesive, all produced using polymer derived ceramics, was developed. Ceramic foams were fabricated by adding varying amounts of a foaming agent to polydimethylsiloxane, curing at room temperature, and pyrolyzing at 1200 degrees C. Additions of up to 40 wt% SiC particles to the foams was found to decrease shrinkage during pyrolysis, but resulted in microcracking and decreased strength compared to the unfilled foams, which had strengths comparable to those seen in commercial foams. The adhesive, consisting of a SiC-loaded SMP-10, was found to have a tensile strength greater than that of the foams, ranging from 8-10 MPa.
C1 [Leslie, C. J.; Kim, H. J.; Chen, H.; Walker, K. M.; Boakye, E. E.; Chen, C.; Carney, C. M.; Cinibulk, M. K.; Chen, M. -Y.] Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
RP Leslie, CJ (reprint author), Air Force Res Lab, Wright Patterson AFB, OH 45433 USA.
NR 14
TC 0
Z9 0
U1 1
U2 5
PU AMER CERAMIC SOC
PI WESTERVILLE
PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA
SN 1042-1122
BN 978-1-118-77144-0; 978-1-118-77150-1
J9 CERAM TRANS
PY 2014
VL 243
BP 33
EP 46
PG 14
WC Materials Science, Ceramics; Materials Science, Multidisciplinary
SC Materials Science
GA BB9SR
UT WOS:000348597600003
ER
EF