FN Thomson Reuters Web of Science™ VR 1.0 PT S AU Lee, KR Olsen, RC Kruse, FA Kim, AM AF Lee, Krista R. Olsen, Richard C. Kruse, Fred A. Kim, Angela M. BE Shen, SS Lewis, PE TI Using multi-angle World View-2 imagery to determine bathymetry near Oahu, Hawaii SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XIX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIX CY APR 29-MAY 02, 2013 CL Baltimore, MD SP SPIE DE Multispectral imaging; WorldView-2; bathymetry derivation; multi-angle imagery AB Multispectral imaging (MSI) data collected at multiple angles over shallow water provide analysts with a unique perspective of bathymetry in coastal areas. Observations taken by DigitalGlobe's WorldView-2 (WV-2) sensor acquired at 39 different view angles on 30 July 2011 were used to determine the effect of acquisition angle on bathymetry derivation. The site used for this study was Kailua Bay (on the windward side of the island of Oahu). Satellite azimuth and elevation for these data ranged from 18.8 to 185.8 degrees and 24.9 (forward-looking) to 24.5 (backward-looking) degrees (respectively) with 90 degrees representing a nadir view. Bathymetry were derived directly from the WV-2 radiance data using a band ratio approach. Comparison of results to LiDAR-derived bathymetry showed that varying view angle impact the quality of the inferred bathymetry. Derived and reference bathymetly have a higher correlation as images are acquired closer to nadir. The band combination utilized for depth derivation also has an effect on derived bathymetry. Four band combinations were compared, and the Blue & Green combination provided the best results. C1 [Lee, Krista R.; Olsen, Richard C.; Kruse, Fred A.; Kim, Angela M.] Naval Postgrad Sch, Dept Phys, 833 Dyer Rd, Monterey, CA 93943 USA. RP Lee, KR (reprint author), Naval Postgrad Sch, Dept Phys, 833 Dyer Rd, Monterey, CA 93943 USA. EM krista.r.lee@gmail.com RI Olsen, Richard/O-2699-2015 OI Olsen, Richard/0000-0002-8344-9297 NR 15 TC 0 Z9 0 U1 1 U2 6 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9534-1 J9 PROC SPIE PY 2013 VL 8743 AR 874311 DI 10.1117/12.2015660 PG 14 WC Optics; Spectroscopy SC Optics; Spectroscopy GA BHH00 UT WOS:000325394800032 ER PT S AU Patterson, KW Lamela, G AF Patterson, Karen W. Lamela, Gia BE Shen, SS Lewis, PE TI Impact of specular reflection on bottom type retrieved from World View-2 images SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XIX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIX CY APR 29-MAY 02, 2013 CL Baltimore, MD SP SPIE DE WorldView-2; specular reflection; sun glint; ocean color AB The Naval Research Laboratory (NRL) has been developing the Coastal Water Spectral Toolkit (CWST) to estimate water depth, bottom type and water column constituents such as chlorophyll, suspended sediments and chromophoric dissolved organic matter from hyperspectral imagery. The CWST uses a look-up table approach, comparing remote sensing reflectance spectra observed in an image to a database of modeled spectra for pre-determined water column constituents, depth and bottom type. Recently the CWST was modified to process multi-spectral World View-2 imagery. Generally imagery processed through the CWST has been collected under optimal sun and viewing conditions so as to minimize surface effects such as specular reflection. As such, in our standard atmospheric correction process we do not include a specular reflection correction. In June 2010 a series of 7 World View-2 images was collected within 2 minutes over Moreton Bay, Australia. The images clearly contain varying amounts of surface specular reflection. Each of the 7 images was processed through the CWST using identical processing to evaluate the impact of ignoring specular reflection on coverage and consistency of bottom types retrieved. C1 [Patterson, Karen W.; Lamela, Gia] Naval Res Lab, Washington, DC 20375 USA. RP Patterson, KW (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 2 TC 0 Z9 0 U1 1 U2 5 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9534-1 J9 PROC SPIE PY 2013 VL 8743 AR 874310 DI 10.1117/12.2015124 PG 9 WC Optics; Spectroscopy SC Optics; Spectroscopy GA BHH00 UT WOS:000325394800031 ER PT S AU Schaum, A AF Schaum, Alan BE Shen, SS Lewis, PE TI Extending continuum fusion to create unbeatable detectors SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XIX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIX CY APR 29-MAY 02, 2013 CL Baltimore, MD SP SPIE DE continuum fusion; statistical decision theory; admissible solutions AB We develop an extension of continuum fusion methods that allows the generation of unbeatable decision rules for discrete binary composite hypothesis testing problems. C1 Naval Res Lab, Washington, DC 20375 USA. RP Schaum, A (reprint author), Naval Res Lab, Washington, DC 20375 USA. NR 5 TC 0 Z9 0 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 978-0-8194-9534-1 J9 PROC SPIE PY 2013 VL 8743 AR 87430D DI 10.1117/12.2015158 PG 7 WC Optics; Spectroscopy SC Optics; Spectroscopy GA BHH00 UT WOS:000325394800009 ER PT S AU Wang, YL Schultz, R Chen, SY Liu, CH Chang, CI AF Wang, Yulei Schultz, Robert Chen, Shih-Yu Liu, Chunhong Chang, Chein-, I BE Shen, SS Lewis, PE TI Progressive constrained energy minimization for subpixel detection SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XIX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIX CY APR 29-MAY 02, 2013 CL Baltimore, MD SP SPIE DE Constrained energy minimization (CEM); Causal CEM (C-CEM); Progressive CEM (P-CEM); Real time CEM (RT-CEM) ID HYPERSPECTRAL IMAGERY; N-FINDR; CLASSIFICATION; ALGORITHM AB Constrained energy minimization (CEM) has been widely used for subpixel detection. It makes use of the sample correlation matrix R by suppressing the background thus enhancing detection of targets of interest. In many real world problems, implementing target detection on a timely basis is crucial, specifically moving targets. However, since the calculation of the sample correlation matrix R needs the complete data set prior to its use in detection, CEM is prevented from being implemented as a real time processing algorithm. In order to resolve this dilemma, the sample correlation matrix R must be replaced with a causal sample correlation matrix formed by only those data samples that have been visited and the currently being processed data sample. This causality is a pre-requisite to real time processing. By virtue of such causality, designing and developing a real time processing version of CEM becomes feasible. This paper presents a progressive CEM (PCEM) where the causal sample correlation matrix can be updated sample by sample. Accordingly, PCEM allows the CEM to be implemented as a causal CEM (C-CEM) as well as real time (RT) CEM via a recursive update equation in real time. C1 [Wang, Yulei] Harbin Engn Univ, Informat & Commun Engn Coll, Harbin, Peoples R China. [Wang, Yulei; Schultz, Robert; Chen, Shih-Yu; Liu, Chunhong; Chang, Chein-, I] Univ Maryland Baltimore Cty, Dept Comp Sci & Elect Engn, Remote Sensing Signal & Image Proc Lab, Baltimore, MD 21250 USA. [Schultz, Robert] US Naval Acad, Dept Elect Engn, Annapolis, MD USA. [Liu, Chunhong] China Agr Univ, Coll Informat & Elect Engn, Beijing, Peoples R China. RP Wang, YL (reprint author), Harbin Engn Univ, Informat & Commun Engn Coll, Harbin, Peoples R China. NR 20 TC 1 Z9 1 U1 0 U2 6 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9534-1 J9 PROC SPIE PY 2013 VL 8743 AR 874321 DI 10.1117/12.2015447 PG 7 WC Optics; Spectroscopy SC Optics; Spectroscopy GA BHH00 UT WOS:000325394800066 ER PT J AU He, L Tao, GH Parrish, DA Shreeve, JM AF He, Ling Tao, Guo-Hong Parrish, Damon A. Shreeve, Jean'ne M. TI Impact insensitive dinitromethanide salts SO CHEMICAL COMMUNICATIONS LA English DT Article ID NITROGEN-RICH SALTS; IONIC LIQUIDS; CRYSTAL-STRUCTURES; NITROFORMATE; POTASSIUM AB Several stable guanidinium, triazolium, and tetrazolium dinitromethanide salts with high nitrogen content, good detonation properties, and concomitant low impact sensitivities are potential energetic materials. C1 [He, Ling; Tao, Guo-Hong] Sichuan Univ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China. [Parrish, Damon A.] Naval Res Lab, Washington, DC 20375 USA. [Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA. RP He, L (reprint author), Sichuan Univ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China. EM lhe@scu.edu.cn; jshreeve@uidaho.edu FU DTRA [HDTRA1-07-1-0024]; NSF [CHE-0315275]; ONR [N00014-12-1-0536] FX The authors gratefully acknowledge the support of the DTRA (HDTRA1-07-1-0024), the NSF (CHE-0315275), and the ONR (N00014-12-1-0536). NR 34 TC 13 Z9 13 U1 0 U2 20 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1359-7345 EI 1364-548X J9 CHEM COMMUN JI Chem. Commun. PY 2013 VL 49 IS 87 BP 10329 EP 10331 DI 10.1039/c3cc46518g PG 3 WC Chemistry, Multidisciplinary SC Chemistry GA 234KU UT WOS:000325643500039 PM 24067808 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI A "HAPPY COMBINATION OF CLEMENCY WITH FIRMNESS": THE SMALL WARS PROLOGUE SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Editorial Material; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 1 EP + PG 48 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600002 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI Counterinsurgency Exposing the Myths of the New Way of War PREFACE AND ACKNOWLEDGMENTS SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Editorial Material; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP XI EP + PG 21 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600001 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI THE ROAD FROM SEDAN SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Article; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 41 EP + PG 43 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600003 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI THE PAROXYSMS OF IMPERIAL MIGHT IN THE SHADOW OF THE GREAT WAR SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Article; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 79 EP + PG 50 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600004 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI FROM TIPPERARY TO TEL AVIV: BRITISH COUNTERINSURGENCY IN THE WORLD WAR II ERA SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Article; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 123 EP + PG 35 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600005 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI FROM SMALL WARS TO LA GUERRE SUBVERSIVE: THE RADICALIZATION AND COLLAPSE OF FRENCH COUNTERINSURGENCY SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Article; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 153 EP + PG 55 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600006 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI VIETNAM, COUNTERINSURGENCY, AND THE AMERICAN WAY OF WAR SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Article; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 201 EP + PG 27 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600007 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI "A CONSPIRACY OF HEROES": REVOLUTION AND COUNTERINSURGENCY IN LATIN AMERICA SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Article; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 224 EP + PG 26 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600008 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI BUILDING THE "MOST SUCCESSFUL COUNTERINSURGENCY SCHOOL": COIN AS THE BRITISH WAY OF WAR SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Article; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 246 EP + PG 26 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600009 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI BRITAIN'S THIRTY YEARS' WAR IN NORTHERN IRELAND SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Article; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 268 EP + PG 25 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600010 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI VIETNAM WITH A HAPPY ENDING: IRAQ AND "THE SURGE" SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Article; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 289 EP + PG 34 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600011 ER PT J AU Porch, D AF Porch, Douglas BA Porch, D BF Porch, D TI Counterinsurgency Exposing the Myths of the New Way of War CONCLUSION SO COUNTERINSURGENCY: EXPOSING THE MYTHS OF THE NEW WAY OF WAR LA English DT Editorial Material; Book Chapter C1 Naval Postgrad Sch, Monterey, CA USA. RP Porch, D (reprint author), Naval Postgrad Sch, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-1-107-02738-1 PY 2013 BP 318 EP + PG 36 WC Political Science SC Government & Law GA BHE79 UT WOS:000325205600012 ER PT J AU Lytle, JC Zimmerman, TN Pettigrew, KA Rolison, DR AF Lytle, Justin C. Zimmerman, Trevor N. Pettigrew, Katherine A. Rolison, Debra R. TI Carbon Ductwork with Nanometric Walls and Micron-to-Submicron Inner Diameters SO ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY LA English DT Article ID CHEMICAL-VAPOR-DEPOSITION; ELECTROCHEMICAL ENERGY-STORAGE; ELECTROLESS DEPOSITION; NANOSCALE MNO2; NANOARCHITECTURES; PERFORMANCE; NANOTUBES; AEROGELS; TUBES; ULTRATHIN AB We report a low-cost fabrication method that transforms silica paper into an array of nanopipes with conductive, nanoscopic carbon walls in which the inner and outer carbon surfaces and the inner and outer voids are interconnected in three dimensions. Ultrathin (10-800 nm) carbon coatings are controllably deposited at 1000 degrees C from hydrocarbon vapors onto the fibers of commercial silica filter paper to create a conductive C@SiO2 paper with a shell of carbon wrapping each silica fiber. The cylindrical silica fibril cores that comprise the paper can then be chemically etched to yield a self-supported assembly of hollow, open, thin-walled carbon pipes with continuous electronic pathways and large interfacial areas while retaining the form factor of the original silica paper. Many "lost-wax" templating approaches have been reported, but this protocol enables one to synthetically fine-tune the carbon wall thickness in similar to 10-nm increments such that the ratio of the inner diameter of the pipe to the wall thickness can be as large as 100:1. This two-step route to scalable arrays of carbon pipes ("ductwork") uses inexpensive and readily available precursors and generates a freestanding ultraporous object that can function as stand-alone electrode nanoarchitectures. Such macroscale form factors with nanoscopic conductive conduits are adaptable for advanced energy-storage devices or as an ultralight matrix for thermal management such as spot cooling. (C) 2013 The Electrochemical Society. All rights reserved. C1 [Lytle, Justin C.; Zimmerman, Trevor N.; Pettigrew, Katherine A.; Rolison, Debra R.] US Naval Res Lab, Surface Chem Branch, Washington, DC 20375 USA. [Lytle, Justin C.] Pacific Lutheran Univ, Dept Chem, Tacoma, WA 98447 USA. RP Lytle, JC (reprint author), US Naval Res Lab, Surface Chem Branch, Washington, DC 20375 USA. EM lytlejc@plu.edu FU U.S. Office of Naval Research FX This work was supported by the U.S. Office of Naval Research. J.C.L. was an ASEE Postdoctoral Associate (2007-2008), K.A.P. was an NRC Postdoctoral Associate (2004-2007), and T.N.Z. was a STEP undergraduate physical assistant. We gratefully acknowledge Pall Life Sciences for donating Tissuquartz filter paper for this project. NR 41 TC 2 Z9 2 U1 1 U2 14 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 2162-8769 J9 ECS J SOLID STATE SC JI ECS J. Solid State Sci. Technol. PY 2013 VL 2 IS 10 BP M3078 EP M3083 DI 10.1149/2.013310jss PG 6 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 234ZJ UT WOS:000325683100013 ER PT S AU Kim, W Florea, C Gibson, D Peele, J Askins, C Shaw, B Bowman, S O'Connor, S Bayya, S Aggarwal, I Sanghera, JS AF Kim, W. Florea, C. Gibson, D. Peele, J. Askins, C. Shaw, B. Bowman, S. O'Connor, S. Bayya, S. Aggarwal, I. Sanghera, J. S. BE Hendow, ST TI Crystal Fibers for High Power Lasers SO FIBER LASERS X: TECHNOLOGY, SYSTEMS, AND APPLICATIONS SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Fiber Lasers X - Technology, Systems, and Applications CY FEB 04-07, 2013 CL San Francisco, CA SP SPIE, NKT Photon A/S, Fianium Ltd, PolarOnyx Inc DE Crystal fibers; fiber lasers; laser heated pedestal growth (LHPG); Cladded fiber; Glass AB In this paper, we present our recent progress in developing single crystal fibers for high power single frequency fiber lasers. The optical, spectral and morphological properties as well as the loss and gain measured from these crystal fibers drawn by Laser Heated Pedestal Growth (LHPG) system are also discussed. Results on application of various cladding materials on the crystal core and the methods of fiber end-face polishing are also presented. C1 [Kim, W.; Gibson, D.; Askins, C.; Shaw, B.; Bowman, S.; O'Connor, S.; Bayya, S.; Sanghera, J. S.] Naval Res Lab, Washington, DC 20375 USA. RP Kim, W (reprint author), Naval Res Lab, Code 5620, Washington, DC 20375 USA. NR 9 TC 1 Z9 1 U1 1 U2 6 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9370-5 J9 PROC SPIE PY 2013 VL 8601 AR 86012Z DI 10.1117/12.2004632 PG 6 WC Optics; Physics, Applied SC Optics; Physics GA BHE44 UT WOS:000325162800077 ER PT J AU Miller, TJ Kilic, O Mirotznik, MS AF Miller, Thomas J. Kilic, Ozlem Mirotznik, Mark S. TI Antenna Cross-Polarization Isolation and Calibration of Hybrid-Polarization Radars SO IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS LA English DT Article DE Antenna measurements; crosstalk; radar cross section; radar polarimetry ID POLARIMETRIC SAR DATA AB This letter presents an experiment using a fully polarimetric hybrid-polarization (CL-pol) radar that employs separate spiral antennas for transmit of the orthogonal circular polarizations and operates from 8 to 16 GHz. We propose a model for the antenna cross-polarization isolation (XPI) and calibration of this radar. The transmit XPI is characterized by leveraging the Doppler shift caused by a continually rotating dihedral target illuminated by a circularly polarized wave. Experimental results show the validity of the radar model and antenna measurement technique. C1 [Miller, Thomas J.] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA. [Kilic, Ozlem] Catholic Univ Amer, Washington, DC 20064 USA. [Mirotznik, Mark S.] Univ Delaware, Newark, DE 19716 USA. RP Miller, TJ (reprint author), Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA. EM thomas.j.miller1@navy.mil; kilic@cua.edu; mirotzni@ece.udel.edu FU Office of Naval Research FX This work was supported in part by the Office of Naval Research. NR 14 TC 2 Z9 2 U1 1 U2 10 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1536-1225 EI 1548-5757 J9 IEEE ANTENN WIREL PR JI IEEE Antennas Wirel. Propag. Lett. PY 2013 VL 12 BP 1200 EP 1203 DI 10.1109/LAWP.2013.2282251 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA 234YO UT WOS:000325680600007 ER PT S AU Algar, WR Blanco-Canosa, JB Manthe, RL Susumu, K Stewart, MH Dawson, PE Medintz, IL AF Algar, W. Russ Blanco-Canosa, Juan B. Manthe, Rachel L. Susumu, Kimihiro Stewart, Michael H. Dawson, Philip E. Medintz, Igor L. BE Bergese, P HamadSchifferli, K TI Synthesizing and Modifying Peptides for Chemoselective Ligation and Assembly into Quantum Dot-Peptide Bioconjugates SO NANOMATERIAL INTERFACES IN BIOLOGY: METHODS AND PROTOCOLS SE Methods in Molecular Biology LA English DT Article; Book Chapter DE Quantum dot; Peptide; Bioconjugation; Polyhistidine; Self-assembly; Chemoselective ligation; Hydrazone ID RESONANCE ENERGY-TRANSFER; BIOLOGICAL APPLICATIONS; HYDRAZONE-FORMATION; PROTEINS; NANOPARTICLES; GOLD; DNA; OLIGONUCLEOTIDES; BIOMOLECULES; CONJUGATION AB Quantum dots (QDs) are well-established as photoluminescent nanoparticle probes for in vitro or in vivo imaging, sensing, and even drug delivery. A critical component of this research is the need to reliably conjugate peptides, proteins, oligonucleotides, and other biomolecules to QDs in a controlled manner. In this chapter, we describe the conjugation of peptides to CdSe/ZnS QDs using a combination of polyhistidine self-assembly and hydrazone ligation. The former is a high-affinity interaction with the inorganic surface of the QD; the latter is a highly efficient and chemoselective reaction that occurs between 4-formylbenzoyl (4FB) and 2-hydrazinonicotinoyl (HYNIC) moieties. Two methods are presented for modifying peptides with these functional groups: (1) solid phase peptide synthesis; and (2) solution phase modification of presynthesized, commercial peptides. We further describe the aniline-catalyzed ligation of 4FB- and HYNIC-modified peptides, in the presence of a fluorescent label on the latter peptide, as well as subsequent assembly of the ligated peptide to water-soluble QDs. Many technical elements of these protocols can be extended to labeling peptides with other small molecule reagents. Overall, the bioconjugate chemistry is robust, selective, and modular, thereby potentiating the controlled conjugation of QDs with a diverse array of biomolecules for various applications. C1 [Algar, W. Russ; Susumu, Kimihiro] Naval Res Lab, Washington, DC USA. [Blanco-Canosa, Juan B.; Dawson, Philip E.] Scripps Res Inst, La Jolla, CA 92037 USA. [Manthe, Rachel L.] Univ Maryland, Sotera Def Solut, College Pk, MD 20742 USA. [Stewart, Michael H.] US Naval Res Lab, Div Opt Sci, Washington, DC USA. [Medintz, Igor L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC USA. RP Algar, WR (reprint author), Naval Res Lab, Washington, DC USA. NR 51 TC 13 Z9 13 U1 1 U2 26 PU HUMANA PRESS INC PI TOTOWA PA 999 RIVERVIEW DR, STE 208, TOTOWA, NJ 07512-1165 USA SN 1064-3745 BN 978-1-62703-462-3; 978-1-62703-461-6 J9 METHODS MOL BIOL JI Methods Mol. Biol. PY 2013 VL 1025 BP 47 EP 73 DI 10.1007/978-1-62703-462-3_5 D2 10.1007/978-1-62703-462-3 PG 27 WC Biotechnology & Applied Microbiology; Nanoscience & Nanotechnology SC Biotechnology & Applied Microbiology; Science & Technology - Other Topics GA BHH99 UT WOS:000325474000006 PM 23918329 ER PT S AU Johnson, M Song, J Hong, J Chang, J AF Johnson, Mark Song, Jindong Hong, Jinki Chang, Joonyeon BE Drouhin, HJ Wegrowe, JE Razeghi, M TI Magnetic field controlled reconfigurable logic gates with integrated nanomagnets SO SPINTRONICS VI SE Proceedings of SPIE LA English DT Proceedings Paper CT SPIE Symposium on Spintronics VI CY AUG 25-29, 2013 CL San Diego, CA SP SPIE DE spintronics; reconfigurable logic; magnetoelectronics ID SPIN; SILICON; INJECTION; DEVICES AB We describe the development of a magnetic logic device that is uniquely different from spintronic approaches based on magnetoresistive effects that derive from spin dependent transport of carriers. The core of our device is a thin film avalanche diode channel fabricated as a p-n bilayer. Because of the structural asymmetry, the carriers are sensitive to an in-plane magnetic field and the diode has a large magnetoresistance. We characterize our device as a current switch. The high- and low-current states are well defined and are determined by the magnetic field. Positive or negative field orientation with constant field strength is an appropriate selector. We then describe an integrated avalanche diode logic device in which the magnetic field is provided by the local fringe field from a patterned ferromagnetic film with nanometer dimensions. The magnetization orientation of the nanomagnet, and the sign of the magnetic field, is set by spin torque transfer (STT) using small amplitude current pulses. We describe how simple arrangements of these integrated devices can be used as dynamically reconfigurable logic gates. Reconfigurable Boolean AND/OR gates using early prototype structures with micron dimensions are shown. Scaling arguments that justify the plausibility of fabricating an integrated device with dimensions of 100 nm are presented. These arguments suggest that such a device could produce an output current driving STT write processes and provide fanout capability in an integrated network. C1 [Johnson, Mark] US Naval Res Lab, Washington, DC 20375 USA. RP Johnson, M (reprint author), US Naval Res Lab, 4555 Overlook Av SW, Washington, DC 20375 USA. EM mark.b.johnson@nrl.navy.mil NR 23 TC 1 Z9 1 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 978-0-8194-9663-8 J9 PROC SPIE PY 2013 VL 8813 AR 88132J DI 10.1117/12.2024409 PG 9 WC Optics; Physics, Applied SC Optics; Physics GA BHH35 UT WOS:000325418700026 ER PT S AU Ahlbin, JR Hooten, NC Gadlage, MJ Warner, JH Buchner, SP McMorrow, D Massengill, LW AF Ahlbin, J. R. Hooten, N. C. Gadlage, M. J. Warner, J. H. Buchner, S. P. McMorrow, D. Massengill, L. W. GP IEEE TI Identification of Pulse Quenching Enhanced Layouts with Subbandgap Laser-Induced Single-Event Effects SO 2013 IEEE INTERNATIONAL RELIABILITY PHYSICS SYMPOSIUM (IRPS) SE International Reliability Physics Symposium LA English DT Proceedings Paper CT IEEE International Reliability Physics Symposium (IRPS) CY APR 14-18, 2013 CL Anaheim, CA SP IEEE, Texas Instruments, Cisco Syst, Cadence, Hitachi, IBM, Intel, Mentor Graph, Samsung DE pulse quenching; charge sharing; CMOS; single-event transient; SET ID 2-PHOTON ABSORPTION; NM CMOS AB Pulsed-laser single-event effects experiments on a 65 nm bulk CMOS integrated circuit confirms the existence of single-event pulse quenching and supports previous heavy-ion results. Strikes on pMOS transistors adjacent to each other are most susceptible to pulse quenching, with the pulsed-laser results emphasizing the proclivity of common n-well designs to pulse quenching. Correlation of the laser data with heavy-ion data shows that pulse quenching can occur below an LET of 9 MeV-cm(2)/mg. C1 [Ahlbin, J. R.] Univ Southern Calif, Inst Informat Sci, 3811 N Fairfax Dr,Suite 200, Arlington, VA 22203 USA. [Hooten, N. C.; Massengill, L. W.] Vanderbilt Univ, Dept EECS, Nashville, TN 37235 USA. [Gadlage, M. J.] NAVSEA Crane, Crane, IN 47522 USA. [Warner, J. H.; Buchner, S. P.; McMorrow, D.] Naval Res Lab, Washington, DC 20375 USA. RP Ahlbin, JR (reprint author), Univ Southern Calif, Inst Informat Sci, 3811 N Fairfax Dr,Suite 200, Arlington, VA 22203 USA. EM jahlbin@isi.edu FU DTRA Radiation-Hardened Microelectronics Program FX This work was supported in part by the DTRA Radiation-Hardened Microelectronics Program. 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 1541-7026 BN 978-1-4799-0113-5; 978-1-4799-0112-8 J9 INT RELIAB PHY SYM PY 2013 PG 6 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BHD78 UT WOS:000325097500112 ER PT S AU Oriti, G Julian, AL Peck, NJ AF Oriti, Giovanna Julian, Alexander L. Peck, Nathan J. GP IEEE TI Power Electronics Enabled Energy Management Systems SO 2013 TWENTY-EIGHTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2013) SE Annual IEEE Applied Power Electronics Conference and Exposition (APEC) LA English DT Proceedings Paper CT 28th Annual IEEE Applied Power Electronics Conference and Exposition ()APEC) CY MAR 17-21, 2013 CL Long Beach, CA SP IEEE, Power Sources Manufacturers Assoc, IEEE Power Elect Soc, IEEE Ind Applicat Soc AB This paper demonstrates the functionality of a power electronics based energy management system (EMS). An EMS can optimize the use of energy sources and energy storage systems in microgrids. It can provide an intelligent interface with the main grid when the microgrid is connected, and it makes the microgrid fault tolerant by providing power to critical loads when the main power source fails. The EMS presented in this paper is developed on a digitally controlled power electronics system which can act as a current source or a voltage source depending on the situation. The EMS functionality is demonstrated by modeling, simulations and experimental measurements. C1 [Oriti, Giovanna; Julian, Alexander L.; Peck, Nathan J.] Naval Postgrad Sch, Elect & Comp Engn Dept, Monterey, CA USA. RP Oriti, G (reprint author), Naval Postgrad Sch, Elect & Comp Engn Dept, Monterey, CA USA. NR 16 TC 1 Z9 1 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1048-2334 BN 978-1-4673-4355-8 J9 APPL POWER ELECT CO PY 2013 BP 3224 EP 3231 PG 8 WC Engineering, Electrical & Electronic SC Engineering GA BHC65 UT WOS:000324988603056 ER PT S AU Foley, MP Worosz, CJ Sweely, K Henderson, WA De Long, HC Trulove, PC AF Foley, M. P. Worosz, C. J. Sweely, K. Henderson, W. A. De Long, H. C. Trulove, P. C. BE Narayan, S Manivannan, A Manthiram, A TI Phase Behavior and Solvation of Lithium Trifluoromethanesulfonate in Propylene Carbonate SO BATTERIES AND ENERGY TECHNOLOGY (GENERAL) - 221ST ECS MEETING SE ECS Transactions LA English DT Proceedings Paper CT Symposium on Batteries and Energy Technology Joint General Session held during the 221st Meeting of the Electrochemical-Society (ECS) CY MAY 06-10, 2012 CL Seattle, WA SP Electrochem Soc, Energy Technol, Battery ID TRIFLATE AB Presented here are data describing the phase behavior and solvation of lithium trifluoromethanesulfonate (LiCF3SO3) in propylene carbonate (PC). Data obtained from differential scanning calorimetry (DSC) and Raman spectroscopy of sample mixtures are correlated to enhance understanding of solvent-salt associations. A phase diagram will display the behavior of the solvent-salt interactions. The binary phase diagram constructed from thermal data acquired by DSC analyses indicated only glass transition temperatures for all mixtures of PC-LiCF3SO3 tested. Raman spectroscopy is applied to probe the liquid electrolyte and discover solvent-salt associations in solution. Results indicate that mixtures of PC-LiCF3SO3 do not readily form solvent-separated ion pairs but rather tend toward contact ion pair and more aggregated solvates. Overall, this study provided some insight into electrolyte solvation of these model battery electrolyte species. C1 [Foley, M. P.; Worosz, C. J.; Sweely, K.; Trulove, P. C.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA. [Henderson, W. A.] North Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA. [De Long, H. C.] Air Force Off Sci Res, Arlington, VA 22203 USA. RP Foley, MP (reprint author), US Naval Acad, Dept Chem, Annapolis, MD 21402 USA. FU U.S. Department of Energy; Office of Basic Energy Sciences; Division of Materials Sciences and Engineering [DE-SC0002169, DE-SC0001419] FX The authors wish to express their gratitude to the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering which fully supported this research under Awards DE-SC0002169 and DE-SC0001419. We also wish to thank the Air Force Office of Scientific Research, U.S. Naval Academy andNorth Carolina State University for personnel. NR 6 TC 2 Z9 2 U1 1 U2 10 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-404-6; 978-1-62332-052-2 J9 ECS TRANSACTIONS PY 2013 VL 45 IS 29 BP 41 EP 47 DI 10.1149/04529.0041ecst PG 7 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BHG27 UT WOS:000325333300006 ER PT S AU Natishan, PM O'Grady, WE Martin, FJ Hagans, PL Martin, HB Stoner, BR AF Natishan, P. M. O'Grady, W. E. Martin, F. J. Hagans, P. L. Martin, H. B. Stoner, B. R. BE Aguilar, ZP Weidner, J Inman, M Natishan, PM Stoner, B Taylor, EJ TI Electrochemical Oxidation of Organic Compounds using Boron-Doped Diamond Electrodes SO CLEAN WATER TECHNOLOGIES SE ECS Transactions LA English DT Proceedings Paper CT Clean Water Technologies Symposium, held during the 221st Meeting of the Electrochemical-Society (ECS) CY MAY 06-10, 2012 CL Seattle, WA SP Electrochem Soc, Sensor, Corrosion, Ind Electrochemistry & Electrochem Engn, New Technol Subcommittee ID THIN-FILM ELECTRODES; BEHAVIOR; PHENOL; REDUCTION; MEDIA AB Boron-doped diamond (BDD) electrodes prepared by chemical vapor deposition were used to determine if phenol could be oxidized to CO2 and if biofilms could be oxidized and "cleaned" from a surface. Cyclic voltammetry showed that phenol and biofilms were electrolyzed by the BDD electrodes and that the oxidation products did not foul the electrodes. Experiments were also run with a flow cell in which a liter of 10 mM phenol in 0.1M H2SO4 was circulated through the cell and the total organic carbon (TOC) was monitored as a function of time and cell current. The total carbon in solution was reduced from similar to 1% to <0.1% with no observable decrease in decomposition rate. This low, total organic carbon content supports that the reacted phenol was converted completely to CO2. C1 [Natishan, P. M.; Martin, F. J.] Naval Res Lab, Div Chem, Washington, DC 20375 USA. [O'Grady, W. E.] Excet Inc, Springfield, VA 22151 USA. [Hagans, P. L.] A123 Syst, Ann Arbor, MI 48108 USA. [Martin, H. B.] Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA. [Stoner, B. R.] Res Triangle Inst, Res Triangle Pk, NC 27709 USA. RP Natishan, PM (reprint author), Naval Res Lab, Div Chem, Washington, DC 20375 USA. FU Office of Naval Research; Naval Research Laboratory FX The authors gratefully acknowledge the support of the Office of Naval Research and the Naval Research Laboratory for the work. NR 22 TC 2 Z9 2 U1 0 U2 8 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-385-8; 978-1-62332-033-1 J9 ECS TRANSACTIONS PY 2013 VL 45 IS 17 BP 19 EP 30 DI 10.1149/04517.0019ecst PG 12 WC Chemistry, Applied; Engineering, Environmental; Water Resources SC Chemistry; Engineering; Water Resources GA BHF11 UT WOS:000325214700003 ER PT S AU Fatemi, FK Ravets, S Hoffman, JE Beadie, G Rolston, SL Orozco, LA AF Fatemi, Fredrik K. Ravets, Sylvain Hoffman, Jonathan E. Beadie, Guy Rolston, Steven L. Orozco, Luis A. BE Gluckstad, J Andrews, DL Galvez, EJ TI Higher order mode propagation in ultrathin optical fibers for atom traps SO COMPLEX LIGHT AND OPTICAL FORCES VII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Complex Light and Optical Forces VII part of Photonics West CY FEB 05-07, 2013 CL San Francisco, CA SP SPIE DE Nanofiber; fiber modes; tapered optical fiber ID NANOFIBER AB We have demonstrated efficient propagation of the first excited TE01, TM01, and HE21 modes in a nanofiber with a radius of 400 nm. As we decrease the taper angle from 4 mrad to 1 mrad, the propagation becomes more adiabatic and the transmission improves from 20% to 85%. We have also demonstrated that the choice of drawn fiber can have a significant impact on the propagation characteristics. C1 [Fatemi, Fredrik K.; Beadie, Guy] US Naval Acad, Opt Sci Div, Res Lab, Washington, DC 20375 USA. [Ravets, Sylvain] Univ Paris 11, CNRS, Inst Opt, Lab Charles Fabry, F-75700 Paris, France. [Ravets, Sylvain; Hoffman, Jonathan E.; Rolston, Steven L.; Orozco, Luis A.] Univ Maryland, NIST, Joint Quantum Inst, Dept Phys, College Pk, MD 20742 USA. RP Fatemi, FK (reprint author), US Naval Acad, Opt Sci Div, Res Lab, Washington, DC 20375 USA. EM fredrik.fatemi@nrl.navy.mil RI rolston, steven/L-5175-2013 OI rolston, steven/0000-0003-1671-4190 FU ONR; ARO; DARPA; Fulbright Foundation; NSF through the PFC at JQI FX This work was funded by ONR, ARO, DARPA, the Fulbright Foundation, and the NSF through the PFC at JQI. NR 11 TC 0 Z9 0 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 978-0-8194-9406-1 J9 PROC SPIE PY 2013 VL 8637 AR 86370X DI 10.1117/12.2004429 PG 7 WC Optics; Physics, Applied SC Optics; Physics GA BHF25 UT WOS:000325227800020 ER PT S AU Bayya, S Sanghera, J Kim, W Gibson, D Fleet, E Shaw, B Hunt, M Aggarwal, I AF Bayya, Shyam Sanghera, Jasbinder Kim, Woohong Gibson, Daniel Fleet, Erin Shaw, Brandon Hunt, Michael Aggarwal, Ishwar BE Andresen, BF Fulop, GF Hanson, CM Norton, PR TI New Multiband IR Imaging Optics SO INFRARED TECHNOLOGY AND APPLICATIONS XXXIX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Infrared Technology and Applications XXXIX CY APR 29-MAY 03, 2013 CL Baltimore, MD SP SPIE DE SWIR; MWIR; LWIR; MILTRAN; IR glass; multispectral optics AB We report new multispectral materials that transmit from 0.9 to > 12 mu m in wavelength. These materials fill up the glass map for multispectral optics and vary in refractive index from 2.38 to 3.17. They show a large spread in dispersion (Abbe number) and offer some unique solutions for multispectral optics designs. One of the glasses developed is a very good candidate to replace Ge, as it has a combination of excellent properties, including high Abbe number in the LWIR, high index of 3.2, 60% lower dn/dT, and better thermal stability at working temperatures. Our results also provide a wider selection of optical materials to enable simpler achromat designs. For example, we have developed other glasses that have relatively high Abbe number in both the MWIR and LWIR regions, while our MILTRAN ceramic has low Abbe number in both regions. This makes for a very good combination of glasses and MILTRAN ceramic (analogous to crown and flint glasses in the visible) for MWIR + LWIR dual band imaging. We have designed preliminary optics for one such imager with f/2.5, 51 mm focal length and 22 degrees FOV using a spaced doublet of NRL's glass and MILTRAN ceramic. NRL's approach reduces the number of elements, weight, complexity and cost compared with the approach using traditional optics. Another important advantage of using NRL glasses in optics design is their negative or very low positive dn/dT, that makes it easier to athermalize the optical system. C1 [Bayya, Shyam; Sanghera, Jasbinder; Kim, Woohong; Gibson, Daniel; Fleet, Erin; Shaw, Brandon] Naval Res Lab, Washington, DC USA. RP Bayya, S (reprint author), Naval Res Lab, Code 5620, Washington, DC USA. NR 9 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 978-0-8194-9495-5 J9 PROC SPIE PY 2013 VL 8704 AR 870428 DI 10.1117/12.2016332 PG 6 WC Optics; Physics, Applied SC Optics; Physics GA BHF60 UT WOS:000325262800073 ER PT B AU Petkovic, MS Neta, B Petkovic, LD Dzunic, J AF Petkovic, Miodrag S. Neta, Beny Petkovic, Ljiljana D. Dzunic, Jovana BA Petkovic, MS Neta, B Petkovic, LD Dzunic, J BF Petkovic, MS Neta, B Petkovic, LD Dzunic, J TI Basic concepts SO MULTIPOINT METHODS FOR SOLVING NONLINEAR EQUATIONS LA English DT Article; Book Chapter C1 [Petkovic, Miodrag S.; Petkovic, Ljiljana D.; Dzunic, Jovana] Univ Nis, Nish 18000, Serbia. [Neta, Beny] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Petkovic, MS (reprint author), Univ Nis, Nish 18000, Serbia. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-397298-9; 978-0-12-397013-8 PY 2013 BP 1 EP 26 DI 10.1016/B978-0-12-397013-8.00001-7 PG 26 WC Mathematics, Applied SC Mathematics GA BHE40 UT WOS:000325157000002 ER PT B AU Petkovic, MS Neta, B Petkovic, LD Dzunic, J AF Petkovic, Miodrag S. Neta, Beny Petkovic, Ljiljana D. Dzunic, Jovana BA Petkovic, MS Neta, B Petkovic, LD Dzunic, J BF Petkovic, MS Neta, B Petkovic, LD Dzunic, J TI MULTIPOINT METHODS FOR SOLVING NONLINEAR EQUATIONS Preface SO MULTIPOINT METHODS FOR SOLVING NONLINEAR EQUATIONS LA English DT Editorial Material; Book Chapter C1 [Petkovic, Miodrag S.; Petkovic, Ljiljana D.; Dzunic, Jovana] Univ Nis, Nish 18000, Serbia. [Neta, Beny] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Petkovic, MS (reprint author), Univ Nis, Nish 18000, Serbia. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-397298-9; 978-0-12-397013-8 PY 2013 BP IX EP + PG 16 WC Mathematics, Applied SC Mathematics GA BHE40 UT WOS:000325157000001 ER PT B AU Petkovic, MS Neta, B Petkovic, LD Dzunic, J AF Petkovic, Miodrag S. Neta, Beny Petkovic, Ljiljana D. Dzunic, Jovana BA Petkovic, MS Neta, B Petkovic, LD Dzunic, J BF Petkovic, MS Neta, B Petkovic, LD Dzunic, J TI Two-point methods SO MULTIPOINT METHODS FOR SOLVING NONLINEAR EQUATIONS LA English DT Article; Book Chapter C1 [Petkovic, Miodrag S.; Petkovic, Ljiljana D.; Dzunic, Jovana] Univ Nis, Nish 18000, Serbia. [Neta, Beny] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Petkovic, MS (reprint author), Univ Nis, Nish 18000, Serbia. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-397298-9; 978-0-12-397013-8 PY 2013 BP 27 EP 83 DI 10.1016/B978-0-12-397013-8.00002-9 PG 57 WC Mathematics, Applied SC Mathematics GA BHE40 UT WOS:000325157000003 ER PT B AU Petkovic, MS Neta, B Petkovic, LD Dzunic, J AF Petkovic, Miodrag S. Neta, Beny Petkovic, Ljiljana D. Dzunic, Jovana BA Petkovic, MS Neta, B Petkovic, LD Dzunic, J BF Petkovic, MS Neta, B Petkovic, LD Dzunic, J TI Three-point non-optimal methods SO MULTIPOINT METHODS FOR SOLVING NONLINEAR EQUATIONS LA English DT Article; Book Chapter C1 [Petkovic, Miodrag S.; Petkovic, Ljiljana D.; Dzunic, Jovana] Univ Nis, Nish 18000, Serbia. [Neta, Beny] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Petkovic, MS (reprint author), Univ Nis, Nish 18000, Serbia. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-397298-9; 978-0-12-397013-8 PY 2013 BP 85 EP 108 DI 10.1016/B978-0-12-397013-8.00003-0 PG 24 WC Mathematics, Applied SC Mathematics GA BHE40 UT WOS:000325157000004 ER PT B AU Petkovic, MS Neta, B Petkovic, LD Dzunic, J AF Petkovic, Miodrag S. Neta, Beny Petkovic, Ljiljana D. Dzunic, Jovana BA Petkovic, MS Neta, B Petkovic, LD Dzunic, J BF Petkovic, MS Neta, B Petkovic, LD Dzunic, J TI Three-point optimal methods SO MULTIPOINT METHODS FOR SOLVING NONLINEAR EQUATIONS LA English DT Article; Book Chapter C1 [Petkovic, Miodrag S.; Petkovic, Ljiljana D.; Dzunic, Jovana] Univ Nis, Nish 18000, Serbia. [Neta, Beny] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Petkovic, MS (reprint author), Univ Nis, Nish 18000, Serbia. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-397298-9; 978-0-12-397013-8 PY 2013 BP 109 EP 162 DI 10.1016/B978-0-12-397013-8.00004-2 PG 54 WC Mathematics, Applied SC Mathematics GA BHE40 UT WOS:000325157000005 ER PT B AU Petkovic, MS Neta, B Petkovic, LD Dzunic, J AF Petkovic, Miodrag S. Neta, Beny Petkovic, Ljiljana D. Dzunic, Jovana BA Petkovic, MS Neta, B Petkovic, LD Dzunic, J BF Petkovic, MS Neta, B Petkovic, LD Dzunic, J TI Higher-order optimal methods SO MULTIPOINT METHODS FOR SOLVING NONLINEAR EQUATIONS LA English DT Article; Book Chapter C1 [Petkovic, Miodrag S.; Petkovic, Ljiljana D.; Dzunic, Jovana] Univ Nis, Nish 18000, Serbia. [Neta, Beny] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Petkovic, MS (reprint author), Univ Nis, Nish 18000, Serbia. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-397298-9; 978-0-12-397013-8 PY 2013 BP 163 EP 188 DI 10.1016/B978-0-12-397013-8.00005-4 PG 26 WC Mathematics, Applied SC Mathematics GA BHE40 UT WOS:000325157000006 ER PT B AU Petkovic, MS Neta, B Petkovic, LD Dzunic, J AF Petkovic, Miodrag S. Neta, Beny Petkovic, Ljiljana D. Dzunic, Jovana BA Petkovic, MS Neta, B Petkovic, LD Dzunic, J BF Petkovic, MS Neta, B Petkovic, LD Dzunic, J TI Multipoint methods with memory SO MULTIPOINT METHODS FOR SOLVING NONLINEAR EQUATIONS LA English DT Article; Book Chapter C1 [Petkovic, Miodrag S.; Petkovic, Ljiljana D.; Dzunic, Jovana] Univ Nis, Nish 18000, Serbia. [Neta, Beny] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Petkovic, MS (reprint author), Univ Nis, Nish 18000, Serbia. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-397298-9; 978-0-12-397013-8 PY 2013 BP 189 EP 237 DI 10.1016/B978-0-12-397013-8.00006-6 PG 49 WC Mathematics, Applied SC Mathematics GA BHE40 UT WOS:000325157000007 ER PT B AU Petkovic, MS Neta, B Petkovic, LD Dzunic, J AF Petkovic, Miodrag S. Neta, Beny Petkovic, Ljiljana D. Dzunic, Jovana BA Petkovic, MS Neta, B Petkovic, LD Dzunic, J BF Petkovic, MS Neta, B Petkovic, LD Dzunic, J TI Simultaneous methods for polynomial zeros SO MULTIPOINT METHODS FOR SOLVING NONLINEAR EQUATIONS LA English DT Article; Book Chapter C1 [Petkovic, Miodrag S.; Petkovic, Ljiljana D.; Dzunic, Jovana] Univ Nis, Nish 18000, Serbia. [Neta, Beny] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Petkovic, MS (reprint author), Univ Nis, Nish 18000, Serbia. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-397298-9; 978-0-12-397013-8 PY 2013 BP 239 EP 280 DI 10.1016/B978-0-12-397013-8.00007-8 PG 42 WC Mathematics, Applied SC Mathematics GA BHE40 UT WOS:000325157000008 ER PT S AU Busse, L Kung, F Florea, C Shaw, B Aggarwal, I Sanghera, J AF Busse, Lynda Kung, Fred Florea, Catalin Shaw, Brandon Aggarwal, Ishwar Sanghera, Jas BE Digonnet, MJF Jiang, S Dries, JC TI Environmental testing and laser transmission results for ruggedized, high power IR fiber cables SO OPTICAL COMPONENTS AND MATERIALS X SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optical Components and Materials X CY FEB 05-06, 2013 CL San Francisco, CA SP SPIE DE Ruggedized fiber cables; environmental testing; moth eye anti-reflective surfaces AB We present successful results of high mid-IR laser power transmission as well as MIL-SPEC environmental testing (thermal cycling and vibration testing) of ruggedized, IR-transmitting chalcogenide glass fiber cables. The cables tested included chalcogenide fiber cables with endfaces imprinted with anti-reflective "moth eye" surfaces, whereby the reflection loss is reduced from about 17% per end to less than 3%. The cables with these moth eye surfaces also show excellent laser damage resistance. C1 [Busse, Lynda; Shaw, Brandon; Sanghera, Jas] Naval Res Lab, Code 5620,4555 Overlook Av SW, Washington, DC 20375 USA. [Kung, Fred] Univ Res Fdn, Greenbelt, MD 20770 USA. [Florea, Catalin; Aggarwal, Ishwar] Sotera Def Solut Inc, Crofton, MD 21114 USA. RP Busse, L (reprint author), Naval Res Lab, Code 5620,4555 Overlook Av SW, Washington, DC 20375 USA. NR 2 TC 0 Z9 0 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 978-0-8194-9390-3 J9 PROC SPIE PY 2013 VL 8621 AR 86210Y DI 10.1117/12.2005004 PG 8 WC Optics; Physics, Applied SC Optics; Physics GA BHF24 UT WOS:000325224700024 ER PT S AU Jenkins, B Joyce, P Mechtel, D Milden, K Elam, K Watkins, J AF Jenkins, Brian Joyce, Peter Mechtel, Deborah Milden, Kyle Elam, Kyle Watkins, Joseph BE Peters, KJ Ecke, W Matikas, TE TI Highly-localized thermal response measurements in composites using embedded fiber Bragg grating temperature sensors SO SMART SENSOR PHENOMENA, TECHNOLOGY, NETWORKS, AND SYSTEMS INTEGRATION 2013 SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Smart Sensor Phenomena, Technology, Networks, and Systems Integration CY MAR 10-14, 2013 CL San Diego, CA SP SPIE, Amer Soc Mech Engineers DE fiber Bragg gratings; temperature sensors; polymer matrix composites; high energy radiation; strain sensors; structural health monitoring; smart structures AB In this research, fiber Bragg grating (FBG) temperature sensors are embedded in composites in order to detect highly localized temperature gradients in the composite structures. The primary goal is to perform structural health monitoring on a composite structure. A secondary goal is to use the sensors as a diagnostic tool to determine the optimal composite materials, architectures, or structures that are the least susceptible to thermal damage. Initial results will be discussed for two composite materials using a single sensor to measure temperature variations. The tests include measurements of the temporal and spatial thermal response of the composite resulting either from an applied heat source or to high energy radiation incident on the surface. Additional tests demonstrate the response using a 3x2 array of sensors to simultaneously measure the temperature at three varying depths in the composite, using three FBGs aligned with the heat source, and three FBGs located a short lateral distance (3cm) away from the heat source. In addition, since FBGs respond to strain as well as to temperature, any strain in the composite is coupled into the embedded fiber and is also detected by the FBG sensors. Initial measurements demonstrate the simultaneous response of FBG sensors to both temperature and strain. The various components of strain that are observed in the composite will be discussed, and possible methods to isolate these components and mitigate their response will be considered. C1 [Jenkins, Brian; Mechtel, Deborah; Milden, Kyle; Elam, Kyle] US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA. RP Jenkins, B (reprint author), US Naval Acad, Dept Elect & Comp Engn, 105 Maryland Ave, Annapolis, MD 21402 USA. EM bjenkins@usna.edu OI Joyce, Peter/0000-0001-6774-2170 NR 11 TC 1 Z9 1 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 978-0-8194-9476-4 J9 PROC SPIE PY 2013 VL 8693 AR 869308 DI 10.1117/12.2012180 PG 10 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BGK06 UT WOS:000323277400006 ER PT S AU Abe, DK Calame, JP Joye, CD Cook, AM Pasour, J Cooke, S Vlasov, AN Chernyavskiy, IA Levush, B Nguyen, KT Pershing, DE Chernin, D AF Abe, David K. Calame, Jeffrey P. Joye, Colin D. Cook, Alan M. Pasour, John Cooke, Simon Vlasov, Alexander N. Chernyavskiy, Igor A. Levush, Baruch Nguyen, Khanh T. Pershing, Dean E. Chernin, David BE Sadwick, LP OSullivan, CM TI Millimeter-wave and Sub-millimeter-wave Vacuum Electronics Amplifier Development at the US Naval Research Laboratory SO TERAHERTZ, RF, MILLIMETER, AND SUBMILLIMETER-WAVE TECHNOLOGY AND APPLICATIONS VI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI CY FEB 05-07, 2013 CL San Francisco, CA SP SPIE DE Vacuum electronics; sheet electron beam; multiple beam; UV-LIGA; traveling-wave tube; extended interaction klystron; coupled-cavity AB We present an overview of the theoretical and experimental research activities at the U.S. Naval Research Laboratory in the area of millimeter-wave and sub-millimeter-wave vacuum electronics. Amplifier and related circuit development ranging in frequency from 30 GHz to 1.35 THz at power levels from multi-kilowatts to watts will be described along with electron gun topologies that include single-, multiple-, and sheet electron beams. We also describe new ultra-violet photolithographic techniques that enable the fabrication of thick (up to 1000 mu m), high vertical aspect ratio, solid copper structures with integrated beam tunnels with length-to-diameter aspects ratios of >500. C1 [Abe, David K.; Calame, Jeffrey P.; Joye, Colin D.; Cook, Alan M.; Pasour, John; Cooke, Simon; Vlasov, Alexander N.; Chernyavskiy, Igor A.; Levush, Baruch] US Naval Res Lab, Code 6840,4555 Overlook Ave SW, Washington, DC 20375 USA. [Nguyen, Khanh T.; Pershing, Dean E.] Beam Wave Res, Bethesda, MD 20814 USA. [Chernin, David] SAIC, Mclean, VA 22102 USA. RP Abe, DK (reprint author), US Naval Res Lab, Code 6840,4555 Overlook Ave SW, Washington, DC 20375 USA. EM david.abe@nrl.navy.mil FU U.S. Office of Naval Research FX This work was supported by the U.S. Office of Naval Research. NR 8 TC 0 Z9 0 U1 1 U2 15 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9393-4 J9 PROC SPIE PY 2013 VL 8624 AR 86240H DI 10.1117/12.2012060 PG 8 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BHE01 UT WOS:000325112300012 ER PT S AU Alves, F Grbovic, D Kearney, B Karunasiri, G AF Alves, Fabio Grbovic, Dragoslav Kearney, Brian Karunasiri, Gamani BE Sadwick, LP OSullivan, CM TI High sensitivity metamaterial based bi-material terahertz sensor SO TERAHERTZ, RF, MILLIMETER, AND SUBMILLIMETER-WAVE TECHNOLOGY AND APPLICATIONS VI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI CY FEB 05-07, 2013 CL San Francisco, CA SP SPIE DE Terahertz sensor; bi-material; metamaterial absorber ID PERFORMANCE; DETECTORS; ABSORBER; CAMERA AB We report on the fabrication of a microelectromechanical systems (MEMS) based bi-material terahertz (THz) detector integrated with a metamaterial structure to provide high absorption at 3.8 THz. The absorbing element of the sensor was designed with a resonant frequency that matches the quantum cascade laser illumination source, while simultaneously providing structural support, desired thermomechanical properties and optical read-out access. It consists of a periodic array of aluminum squares separated from a homogeneous aluminum (Al) ground plane by a silicon-rich silicon oxide (SiOx) layer. The absorbing element is connected to two Al/SiOx microcantilevers (legs), anchored to a silicon substrate, which acts as a heat sink, allowing the sensor to return to its unperturbed position when excitation is terminated. The metamaterial structure absorbs the incident THz radiation and transfers the heat to the legs where the significant difference between thermal expansion coefficients of Al and SiOx causes the structure to deform proportionally to the absorbed power. The amount of deformation is probed optically by measuring the displacement of a laser beam reflected on the Al ground plane of the metamaterial absorber. Measurement showed that the fabricated absorber has nearly 95% absorption at 3.8 THz. The responsivity and time constant were found to be 1.2 deg/mu W and 0.3 s, respectively. The minimum detectable incident power including the readout noise is around 9 nW. The obtained high sensitivity and design flexibility indicate that sensor can be further tuned to achieve the required parameters for real time THz imaging applications. C1 [Alves, Fabio; Grbovic, Dragoslav; Kearney, Brian; Karunasiri, Gamani] Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA. RP Alves, F (reprint author), Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA. NR 26 TC 2 Z9 2 U1 2 U2 19 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9393-4 J9 PROC SPIE PY 2013 VL 8624 AR 862411 DI 10.1117/12.2005272 PG 9 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BHE01 UT WOS:000325112300027 ER PT S AU Joye, CD Cook, AM Calame, JP Abe, DK Vlasov, AN Chernyavskiy, IA Nguyen, KT Wright, EL AF Joye, Colin D. Cook, Alan M. Calame, Jeffrey P. Abe, David K. Vlasov, Alexander N. Chernyavskiy, Igor A. Nguyen, Khanh T. Wright, Edward L. BE Sadwick, LP OSullivan, CM TI Microfabrication and cold testing of copper circuits for a 50 Watt, 220 GHz traveling wave tube SO TERAHERTZ, RF, MILLIMETER, AND SUBMILLIMETER-WAVE TECHNOLOGY AND APPLICATIONS VI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI CY FEB 05-07, 2013 CL San Francisco, CA SP SPIE DE Slow-wave circuit; traveling wave tube; millimeter wave amplifiers; ultraviolet photolithography ID PHOTORESIST; SU-8 AB We present the microfabrication and cold test measurement results of serpentine waveguide amplifier circuits at 220 GHz. The circuits were fabricated using a novel embedded polymer monofilament technique combined with Ultraviolet-LIGA to simultaneously create both the beam tunnel and interaction circuits. We find remarkable characteristic matches between the measurements of the best circuits, illustrating that the process developed is able to create repeatable, highly precise circuits with high yield. It was found that slight beam tunnel misalignment can cause very strong stopbands to appear in the operating band due to bi- or quasi-periodicity. The NRL code TESLA-SW/FW has been used to rapidly simulate the as-built structure under a variety of conditions to accurately predict the performance with an electron beam. The tolerances needed on beam tunnel alignment are studied, with implications extending to the THz range. C1 [Joye, Colin D.; Cook, Alan M.; Calame, Jeffrey P.; Abe, David K.; Vlasov, Alexander N.; Chernyavskiy, Igor A.] US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Nguyen, Khanh T.; Wright, Edward L.] Beam Wave Res Inc, Bethesda, MD 20814 USA. RP Joye, CD (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM colin.joye@nrl.navy.mil FU DARPA; U.S. Office of Naval Research FX This work was sponsored in part by DARPA and by the U.S. Office of Naval Research. The authors wish to acknowledge the work of Mr. R. E. Myers for brazing the circuits, Mr. B. S. Albright Jr. for highly precise EDM, and Mr. F. N. Wood for fabricating the lithography masks. NR 20 TC 4 Z9 4 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 978-0-8194-9393-4 J9 PROC SPIE PY 2013 VL 8624 AR 862406 DI 10.1117/12.2012074 PG 9 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BHE01 UT WOS:000325112300003 ER PT S AU Kearney, B Alves, F Grbovic, D Karunasiri, G AF Kearney, Brian Alves, Fabio Grbovic, Dragoslav Karunasiri, Gamani BE Sadwick, LP OSullivan, CM TI Metamaterial Films as Narrowband Terahertz Emitters SO TERAHERTZ, RF, MILLIMETER, AND SUBMILLIMETER-WAVE TECHNOLOGY AND APPLICATIONS VI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI CY FEB 05-07, 2013 CL San Francisco, CA SP SPIE ID QUANTUM-CASCADE LASERS; OPTICAL-CONSTANTS; TRANSMISSION AB Continued progress in terahertz (THz) research has emphasized the need for both improved THz sources and detectors. One approach to generate a narrowband THz radiation is to use metamaterial absorbers as thermal emitters. We present metamaterial based THz emitters consisting of a 100 nm aluminum layer patterned into squares separated from a ground plane of aluminum by a thin layer of silicon oxide (<2 mu m) fabricated using standard microfabrication techniques. These metamaterials were designed to emit in one, two, and three different bands of the 4-8 THz range and demonstrate clearly definable separate peaks with bandwidths of approximately 1 THz. Modifying the multiple band configurations can produce relatively broad emission peak if desired. Single band emitters designed for 4.1, 5.4, and 7.8 THz were observed to emit, respectively, 11, 18, and 36 W/m(2) at 400 degrees C in accordance with Kirchhoff's law of thermal radiation. Coating a 4-inch wafer with these materials and heating it to 400 degrees C would produce an estimated 86, 145, and 280 mW of power, respectively. Additionally, emitted power increased linearly with temperature, as expected from the Planck's radiation law in the THz spectral region at elevated temperatures. Emissivity of the metamaterial did not change significantly when heated, indicating that the constituent materials did not significantly change their optical or geometric properties. C1 [Kearney, Brian; Alves, Fabio; Grbovic, Dragoslav; Karunasiri, Gamani] Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA. RP Kearney, B (reprint author), Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA. EM btkearne@nps.edu NR 23 TC 0 Z9 0 U1 2 U2 11 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9393-4 J9 PROC SPIE PY 2013 VL 8624 AR 862410 DI 10.1117/12.2005011 PG 8 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BHE01 UT WOS:000325112300026 ER PT J AU Huhman, BM Neri, JM Wetz, DA AF Huhman, Brett M. Neri, Jesse M. Wetz, David A. GP IEEE TI Design of a Battery Intermediate Storage System for Rep-Rated Pulsed Power Loads SO 2013 IEEE ELECTRIC SHIP TECHNOLOGIES SYMPOSIUM (ESTS) LA English DT Proceedings Paper CT IEEE 5th Biennial Electric Ship Technologies Symposium (ESTS) CY APR 22-24, 2013 CL Arlington, VA SP IEEE, RTDS Technologies, U S Off Naval Res (ONR), Sci & Technol, Dept Navy, ABB, IEEE Power & Energy Soc (PES), IEEE Power Elect Soc (PELS), IEEE Ind Applicat Soc (IAS) AB The U.S. Naval Research Laboratory (NRL) is developing a battery-powered, rep-rate charger for a 60-kJ capacitor bank. The capacitor will be charged with a bank of LiFePO4 batteries in conjunction with a DC-DC converter. During discharge, the batteries will generate heat from the internal resistance. If the heat is not addressed, damage to the cell may occur, leading to degraded cell lifetime and the potential for cell venting. NRL has developed an integrated cooling system for high power batteries that can limit the residual heat in the battery cells. Results from experiments will be presented, both at the cell and the module level. C1 [Huhman, Brett M.; Neri, Jesse M.] US Naval Res Lab, Div Plasma Phys, Washington, DC USA. RP Huhman, BM (reprint author), US Naval Res Lab, Div Plasma Phys, Washington, DC USA. NR 5 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-5245-1 PY 2013 BP 1 EP 5 PG 5 WC Energy & Fuels; Engineering, Marine; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BGV15 UT WOS:000324258200001 ER PT J AU Doerry, N Moniri, K AF Doerry, Norbert Moniri, Khosrow GP IEEE TI Specifications and Standards for the Electric Warship SO 2013 IEEE ELECTRIC SHIP TECHNOLOGIES SYMPOSIUM (ESTS) LA English DT Proceedings Paper CT IEEE 5th Biennial Electric Ship Technologies Symposium (ESTS) CY APR 22-24, 2013 CL Arlington, VA SP IEEE, RTDS Technologies, U S Off Naval Res (ONR), Sci & Technol, Dept Navy, ABB, IEEE Power & Energy Soc (PES), IEEE Power Elect Soc (PELS), IEEE Ind Applicat Soc (IAS) AB The U.S. Navy has invested considerable funds in the research and development of electrical power technologies for future electric warships. One aspect of institutionalizing these technologies is the creation or modification of standards and specifications to incorporate the new technologies. This paper assesses the current state of standards and specifications in support of the design and construction of an all-electric naval warship. These technical documents will be evaluated in terms of the different power systems architectures to include low voltage ac generation, medium voltage ac generation, medium voltage dc generation, and zonal power distribution. Ongoing standards activity, both in industry and in the Navy, are discussed. Finally, the paper presents recommendations for updating existing specifications and standards and the creation of new specifications to cover technical areas where standards do not currently exist. C1 [Doerry, Norbert; Moniri, Khosrow] United States Navy, Naval Sea Syst Command, Washington, DC USA. RP Doerry, N (reprint author), United States Navy, Naval Sea Syst Command, Washington, DC USA. EM norbert.doerry@navy.mil; khosrow.moniri@navy.mil NR 3 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-5245-1 PY 2013 BP 21 EP 28 PG 8 WC Energy & Fuels; Engineering, Marine; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BGV15 UT WOS:000324258200004 ER PT J AU Jurkiewicz, DJ Chalfant, J Chryssostomidis, C AF Jurkiewicz, David J. Chalfant, Julie Chryssostomidis, Chrys GP IEEE TI Modular IPS Machinery Arrangement in Early-Stage Naval Ship Design SO 2013 IEEE ELECTRIC SHIP TECHNOLOGIES SYMPOSIUM (ESTS) LA English DT Proceedings Paper CT IEEE 5th Biennial Electric Ship Technologies Symposium (ESTS) CY APR 22-24, 2013 CL Arlington, VA SP IEEE, RTDS Technologies, U S Off Naval Res (ONR), Sci & Technol, Dept Navy, ABB, IEEE Power & Energy Soc (PES), IEEE Power Elect Soc (PELS), IEEE Ind Applicat Soc (IAS) AB Electrical power demands for naval surface combatants are projected to rise with the development of increasingly complex and power intensive combat systems. This trend coincides with the need to achieve maximum fuel efficiency at both high and low hull speeds. A proposed solution to meet current and future energy needs of conventionally powered naval surface combatants is through the use of an Integrated Power System (IPS), which is seen as the next evolution in naval ship design. In an effort to enhance the relationship between new-concept designs and historically-based ship design processes, this paper focuses on a novel approach of incorporating IPS at the earliest stage of the design process as part of assessing system-level tradeoffs early within the ship design process. This paper describes a methodology for the systematic design and arrangement of an IPS machinery plant to meet a desired power generation level. In conjunction with the methodology development, a hierarchical process and design tool were produced to assist in rapid development and evaluation of various IPS arrangements. The result of this process, through several case studies, provides insight into equipment selection philosophy, the initial sizing of the ship's machinery box, and the initial definition of electrical zones. C1 [Jurkiewicz, David J.] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD USA. RP Jurkiewicz, DJ (reprint author), Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD USA. EM chalfant@mit.edu NR 10 TC 2 Z9 2 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-5245-1 PY 2013 BP 121 EP 127 PG 7 WC Energy & Fuels; Engineering, Marine; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BGV15 UT WOS:000324258200019 ER PT B AU Cordill, BD Seguin, SA Cohen, L AF Cordill, Brian D. Seguin, Sarah A. Cohen, Lawrence GP IEEE TI Radar Performance Degradation with In-Band OFDM Communications System Interference SO 2013 US NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM) LA English DT Proceedings Paper CT US-National-Committee-of-URSI National Radio Science Meeting CY JAN 09-12, 2013 CL Boulder, CO SP URSI, US Natl Comm C1 [Cordill, Brian D.; Seguin, Sarah A.] Univ Kansas, Lawrence, KS 66045 USA. [Cohen, Lawrence] Naval Res Lab, Washington, DC 20375 USA. RP Cordill, BD (reprint author), Univ Kansas, Lawrence, KS 66045 USA. 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 BN 978-1-4673-4778-5; 978-1-4673-4776-1 PY 2013 PG 1 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BGZ24 UT WOS:000324678400069 ER PT J AU Higgins, T Webster, T Shackelford, AK AF Higgins, Thomas Webster, Tegan Shackelford, A. K. GP IEEE TI Interference Mitigation via Phase Only Transmit Nulling: Preliminary Experimental Results SO 2013 US NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM) LA English DT Proceedings Paper CT US-National-Committee-of-URSI National Radio Science Meeting CY JAN 09-12, 2013 CL Boulder, CO SP URSI, US Natl Comm C1 [Higgins, Thomas; Webster, Tegan; Shackelford, A. K.] Naval Res Lab, Div Radar, Washington, DC 20375 USA. RP Higgins, T (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 USA. 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 BN 978-1-4673-4778-5 PY 2013 PG 1 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BGZ24 UT WOS:000324678400070 ER PT B AU Mahmoudian, A Scales, W Bernhardt, P Briczinski, S AF Mahmoudian, Alireza Scales, Wayne Bernhardt, Paul Briczinski, Stan GP IEEE TI y Ion Gyro-harmonic Structuring in the Stimulated Radiation Spectrum during Third Electron Gyro-harmonic Heating SO 2013 US NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM) LA English DT Proceedings Paper CT US-National-Committee-of-URSI National Radio Science Meeting CY JAN 09-12, 2013 CL Boulder, CO SP URSI, US Natl Comm C1 [Mahmoudian, Alireza; Scales, Wayne] Virginia Tech, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA. [Bernhardt, Paul; Briczinski, Stan] Naval Res Lab, Plasma Phys Div, Washington, DC USA. RP Mahmoudian, A (reprint author), Virginia Tech, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-4778-5; 978-1-4673-4776-1 PY 2013 PG 1 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BGZ24 UT WOS:000324678400166 ER PT J AU Mokole, EL Cohen, LS AF Mokole, Eric L. Cohen, Lawrence S. GP IEEE TI A Summary of Spectrum Engineering, The Why and How SO 2013 US NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM) LA English DT Proceedings Paper CT US-National-Committee-of-URSI National Radio Science Meeting CY JAN 09-12, 2013 CL Boulder, CO SP URSI, US Natl Comm C1 [Mokole, Eric L.; Cohen, Lawrence S.] Naval Res Lab, Washington, DC 20375 USA. RP Mokole, EL (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM eric.mokole@nrl.navy.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 BN 978-1-4673-4778-5 PY 2013 PG 1 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BGZ24 UT WOS:000324678400068 ER PT B AU Samimi, A Scales, WA Fu, H Bernhardt, PA Briczinski, SJ McCarrick, MJ AF Samimi, A. Scales, W. A. Fu, H. Bernhardt, P. A. Briczinski, S. J. McCarrick, M. J. GP IEEE TI Investigation of Stimulated Electromagnetic Emission SEE during second electron gyro-harmonic heating SO 2013 US NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM) LA English DT Proceedings Paper CT US-National-Committee-of-URSI National Radio Science Meeting CY JAN 09-12, 2013 CL Boulder, CO SP URSI, US Natl Comm C1 [Samimi, A.; Scales, W. A.; Fu, H.] Virginia Tech, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA. [Bernhardt, P. A.; Briczinski, S. J.] Plasma Phys Div, Naval Res Lab, Washington, DC USA. [McCarrick, M. J.] Marsh Creek LLC, Gakona, AL USA. RP Samimi, A (reprint author), Virginia Tech, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA. 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 BN 978-1-4673-4778-5; 978-1-4673-4776-1 PY 2013 PG 1 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BGZ24 UT WOS:000324678400167 ER PT J AU San Antonio, G Lee, WW Parent, M AF San Antonio, Geoffrey Lee, William W. Parent, Mark GP IEEE TI High Frequency Vector Sensor Design and Testing SO 2013 US NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM) LA English DT Proceedings Paper CT US-National-Committee-of-URSI National Radio Science Meeting CY JAN 09-12, 2013 CL Boulder, CO SP URSI, US Natl Comm C1 [San Antonio, Geoffrey; Lee, William W.; Parent, Mark] Naval Res Lab, Washington, DC 20375 USA. RP San Antonio, G (reprint author), Naval Res Lab, 4555 Overlook Ave Southwest, Washington, DC 20375 USA. 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 BN 978-1-4673-4778-5 PY 2013 PG 1 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BGZ24 UT WOS:000324678400067 ER PT B AU Siefring, CL Bernhardt, PA AF Siefring, Carl L. Bernhardt, Paul A. GP IEEE TI Satellite-Based Measurements of Radio Phase Scintillation using CITRIS, DORIS and CERTO SO 2013 US NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM) LA English DT Proceedings Paper CT US-National-Committee-of-URSI National Radio Science Meeting CY JAN 09-12, 2013 CL Boulder, CO SP URSI, US Natl Comm C1 [Siefring, Carl L.; Bernhardt, Paul A.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. RP Siefring, CL (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. 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 BN 978-1-4673-4778-5; 978-1-4673-4776-1 PY 2013 PG 1 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BGZ24 UT WOS:000324678400015 ER PT B AU Webster, T Cheney, M Mokole, EL AF Webster, Tegan Cheney, Margaret Mokole, Eric L. GP IEEE TI Multistatic Polarimetric Radar Data Modeling SO 2013 US NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM) LA English DT Proceedings Paper CT US-National-Committee-of-URSI National Radio Science Meeting CY JAN 09-12, 2013 CL Boulder, CO SP URSI, US Natl Comm C1 [Webster, Tegan; Mokole, Eric L.] Naval Res Lab, Div Radar, Washington, DC 20375 USA. [Cheney, Margaret] Colorado State Univ, Dept Mat, Ft Collins, CO 80523 USA. RP Webster, T (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 USA. 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 BN 978-1-4673-4778-5; 978-1-4673-4776-1 PY 2013 PG 1 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BGZ24 UT WOS:000324678400125 ER PT J AU Xu, Q Nai, K Liu, S Karstens, C Smith, T Zhao, QY AF Xu, Qin Nai, Kang Liu, Shun Karstens, Chris Smith, Travis Zhao, Qingyun TI Improved Doppler Velocity Dealiasing for Radar Data Assimilation and Storm-Scale Vortex Detection SO ADVANCES IN METEOROLOGY LA English DT Article ID DATA QUALITY-CONTROL AB The Doppler velocity dealiasing technique based on alias-robust VAD and variational (AR-Var) analyses developed at the National Severe Storms Laboratory for radar data quality control and assimilation is further improved in its two-step procedures: the reference check in the first step and the continuity check in the second step. In the first step, the alias-robust variational analysis is modified adaptively and used in place of the alias-robust velocity-azimuth display (VAD) analysis for all scan modes (rather than solely theWSR-88D volume coverage pattern 31 with the Nyquist velocity V.. reduced below 12 m s(-1) and the TDWR Mod80 with nu(N). reduced below 15 m s(-1)), so more raw data can pass the stringent threshold conditions used by the reference check in the first step. This improves the dealiased data coverage without false dealiasing to better satisfy the high data quality standard required by radar data assimilation. In the second step, new procedures are designed and added to the continuity check to increase the dealiased data coverage over storm-scale areas threatened by intense mesocyclones and their generated tornados. The performances of the improved dealiasing technique versus the existing techniques are exemplified by the results obtained for tornadic storms scanned by the operational KTLX radar in Oklahoma. C1 [Xu, Qin; Karstens, Chris; Smith, Travis] Natl Severe Storms Lab, Norman, OK 73072 USA. [Nai, Kang; Karstens, Chris; Smith, Travis] Univ Oklahoma, Cooperat Inst Mesoscale Meteorol Studies, Norman, OK 73072 USA. [Liu, Shun] Natl Ctr Environm Predict, College Pk, MD 20740 USA. [Liu, Shun] IM Syst Grp Inc, College Pk, MD 20740 USA. [Zhao, Qingyun] Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA. RP Xu, Q (reprint author), Natl Severe Storms Lab, Norman, OK 73072 USA. EM qin.xu@noaa.gov FU NCEP-NSSL radar data QC project; ONR [N000141010778]; DOC/NOAA/OAR [NA17RJ1227] FX The authors are thankful to Dr. David Stensrud and anonymous reviewers for their comments and suggestions that improved the representation of the results. This research was supported by the NCEP-NSSL radar data QC project and the ONR Grant N000141010778 to the University of Oklahoma (OU). Funding was also provided by DOC/NOAA/OAR under NOAA-OU Cooperative Agreement NA17RJ1227. NR 15 TC 3 Z9 3 U1 1 U2 3 PU HINDAWI PUBLISHING CORPORATION PI NEW YORK PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA SN 1687-9309 EI 1687-9317 J9 ADV METEOROL JI Adv. Meteorol. PY 2013 AR 562386 DI 10.1155/2013/562386 PG 10 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 221ZN UT WOS:000324699700001 ER PT J AU Dougherty, AL MacGregor, AJ Han, PP Viirre, E Heltemes, KJ Galarneau, MR AF Dougherty, Amber L. MacGregor, Andrew J. Han, Peggy P. Viirre, Erik Heltemes, Kevin J. Galarneau, Michael R. TI Blast-related ear injuries among U.S. military personnel SO JOURNAL OF REHABILITATION RESEARCH AND DEVELOPMENT LA English DT Article DE auditory; blast; combat; deployment; ear injury; hearing loss; hearing protection; military; tinnitus; tympanic membrane rupture ID TYMPANIC-MEMBRANE PERFORATION; HEARING-LOSS; BRAIN-INJURY; TRAUMA; EXPOSURE; BOMB; IRAQ; OVERPRESSURE; PATHOLOGY; LONDON AB Blast-related ear injuries are a concern during deployment because they can compromise a servicemember's situational awareness and adversely affect operational readiness. The objectives of this study were to describe blast-related ear injuries during Operation Iraqi Freedom, identify the effect of hearing protection worn at the point of injury, and explore hearing loss and tinnitus outcomes within one year after injury. The Expeditionary Medical Encounter Database was used to identify military personnel who survived blast-related injury, and it was linked with outpatient medical databases to obtain diagnoses of hearing loss and tinnitus. The prevalence of ear injuries was 30.7% (1,223 of 3,981). The most common ear injury diagnoses were "inner or middle ear injury involving tinnitus" and tympanic membrane (TM) rupture. Hearing protection reduced the odds of ear injury involving tinnitus. Personnel with TM rupture had higher odds of hearing loss (odds ratio [OR] = 6.65, 95% confidence interval [CI] = 5.04-8.78) and tinnitus outcomes (OR = 4.34, 95% CI = 3.12-6.04) than those without TM rupture. Ear injuries and hearing impairment are frequent consequences of blast exposure during combat deployment. Hearing protection is warranted for all service-members at risk of blast exposure. C1 [Dougherty, Amber L.; MacGregor, Andrew J.; Han, Peggy P.; Heltemes, Kevin J.; Galarneau, Michael R.] Naval Hlth Res Ctr, Dept Med Modeling Simulat & Mission Support, San Diego, CA 92106 USA. [Viirre, Erik] Naval Hlth Res Ctr, Warfighter Performance Dept, San Diego, CA 92106 USA. RP Dougherty, AL (reprint author), Naval Hlth Res Ctr, 140 Sylvester Rd, San Diego, CA 92106 USA. EM amber.dougherty@med.navy.mil FU U.S. Navy Bureau of Medicine and Surgery [60808] FX This material was based on work supported by the U.S. Navy Bureau of Medicine and Surgery (work unit number 60808). NR 39 TC 8 Z9 8 U1 1 U2 8 PU JOURNAL REHAB RES & DEV PI BALTIMORE PA DEPT OF VETERANS AFFAIRS REHABIL RES & DEVELOP CTR 103 SOUTH GAY STREET, BALTIMORE, MD 21202-4051 USA SN 0748-7711 J9 J REHABIL RES DEV JI J. Rehabil. Res. Dev. PY 2013 VL 50 IS 6 BP 893 EP 904 DI 10.1682/JRRD.2012.02.0024 PG 12 WC Rehabilitation SC Rehabilitation GA 217HJ UT WOS:000324350200015 PM 24030196 ER PT J AU Malanoski, AP Lin, BC AF Malanoski, Anthony P. Lin, Baochuan TI Evolving Gene Targets and Technology in Influenza Detection SO MOLECULAR DIAGNOSIS & THERAPY LA English DT Review ID MEDIATED ISOTHERMAL AMPLIFICATION; POLYMERASE-CHAIN-REACTION; SEQUENCE-BASED AMPLIFICATION; REVERSE TRANSCRIPTION-PCR; A H1N1 VIRUS; PRIMER-INITIATED AMPLIFICATION; FLUCHIP DIAGNOSTIC MICROARRAY; RESPIRATORY-TRACT INFECTIONS; IONIZATION MASS-SPECTROMETRY; REAL-TIME NASBA AB Influenza viruses cause recurring epidemic outbreaks every year associated with high morbidity and mortality. Despite extensive research and surveillance efforts to control influenza outbreaks, the primary mitigation treatment for influenza is the development of yearly vaccine mixes targeted for the most prevalent virus strains. Consequently, the focus of many detection technologies has evolved toward accurate identification of subtype and understanding the evolution and molecular determinants of novel and pathogenic forms of influenza. The recent availability of potential antiviral treatments are only effective if rapid and accurate diagnostic tests for influenza epidemic management are available; thus, early detection of influenza infection is still important for prevention, containment, patient management, and infection control. This review discusses the current and emerging technologies for detection and strain identification of influenza virus and their specific gene targets, as well as their implications in patient management. C1 [Malanoski, Anthony P.; Lin, Baochuan] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. RP Lin, BC (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, 4555 Overlook Ave SW,Code 6900, Washington, DC 20375 USA. EM baochuan.lin@nrl.navy.mil RI Lin, Baochuan/A-8390-2009; Malanoski, Anthony/C-7814-2011 OI Lin, Baochuan/0000-0002-9484-0785; Malanoski, Anthony/0000-0001-6192-888X FU Office of Naval Research via Naval Research Laboratory FX The funding for preparation of this manuscript was provided by the Office of Naval Research via Naval Research Laboratory Base funding. The funding agent plays no role in the preparation and review of the manuscript. The manuscript is approved for public release by the Naval Research Laboratory. Both authors hold four patents related to resequencing microarray technology for respiratory pathogen detection that is currently licensed by Tessarae Inc. (Potomac Fall, VA, USA). We thank Drs. Michael Stockelman and Stella North for critical review of the manuscript. The views expressed here are those of the authors and do not represent those of the US Navy, the US Department of Defense, or the US Government. NR 198 TC 0 Z9 0 U1 1 U2 12 PU ADIS INT LTD PI AUCKLAND PA 41 CENTORIAN DR, PRIVATE BAG 65901, MAIRANGI BAY, AUCKLAND 1311, NEW ZEALAND SN 1177-1062 J9 MOL DIAGN THER JI Mol. Diagn. Ther. PY 2013 VL 17 IS 5 BP 273 EP 286 DI 10.1007/s40291-013-0040-9 PG 14 WC Genetics & Heredity; Pharmacology & Pharmacy SC Genetics & Heredity; Pharmacology & Pharmacy GA 221IO UT WOS:000324651700002 PM 23686537 ER PT S AU Lanzagorta, M AF Lanzagorta, Marco BE Gilbreath, GC Hawley, CT TI Amplification of radar and lidar signatures using quantum sensors SO ACTIVE AND PASSIVE SIGNATURES IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Active and Passive Signatures IV CY MAY 01-02, 2013 CL Baltimore, MD SP SPIE DE Quantum Sensors; Quantum Radar; Quantum Entanglement; Quantum Information; Radar; Lidar AB One of the major scientific thrusts from recent years has been to try to harness quantum phenomena to dramatically increase the performance of a wide variety of classical devices. These advances in quantum information science have had a considerable impact on the development of photonic-based quantum sensors. Even though quantum radar and quantum lidar remain theoretical proposals, preliminary results suggest that these sensors have the potential of becoming disruptive technologies able to revolutionize reconnaissance systems. In this paper we will discuss how quantum entanglement can be exploited to increase the radar and lidar signature of rectangular targets. In particular, we will show how the effective visibility of the target is increased if observed with an entangled multi-photon quantum sensor. C1 Naval Res Lab, Washington, DC 20375 USA. RP Lanzagorta, M (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM marco.lanzagorta@nrl.navy.mil NR 16 TC 3 Z9 3 U1 3 U2 15 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9525-9 J9 PROC SPIE PY 2013 VL 8734 AR UNSP 87340C DI 10.1117/12.2017016 PG 11 WC Optics; Telecommunications SC Optics; Telecommunications GA BGK58 UT WOS:000323335100009 ER PT J AU Connor, BJ Mooney, T Nedoluha, GE Barrett, JW Parrish, A Koda, J Santee, ML Gomez, RM AF Connor, B. J. Mooney, T. Nedoluha, G. E. Barrett, J. W. Parrish, A. Koda, J. Santee, M. L. Gomez, R. M. TI Re-analysis of ground-based microwave ClO measurements from Mauna Kea, 1992 to early 2012 SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID CHLORINE MONOXIDE; DIURNAL-VARIATION AB We present a re-analysis of upper stratospheric ClO measurements from the ground-based millimeter-wave instrument from January 1992 to February 2012. These measurements are made as part of the Network for the Detection of Atmospheric Composition Change (NDACC) from Mauna Kea, Hawaii, (19.8 degrees N, 204.5 degrees E). Here, we use daytime and nighttime measurements together to form a day-night spectrum, from which the difference in the day and night profiles is retrieved. These results are then compared to the daynight difference profiles from the Upper Atmosphere Research Satellite (UARS) and Aura Microwave Limb Sounder (MLS) instruments. We also compare them to our previous analyses of the same data, in which we retrieved the daytime ClO profile. The major focus will be on comparing the year-to-year and long-term changes in ClO derived by the two analysis methods, and comparing these results to the longterm changes reported by others. We conclude that the reanalyzed data set has less short-term variability and exhibits a more constant long-term trend that is more consistent with other observations. Data from 1995 to 2012 indicate a linear decline of mid-stratospheric ClO of 0.64 +/- 0.15% yr(-1) (2 sigma). C1 [Connor, B. J.] BC Consulting Ltd, Alexandra, New Zealand. [Nedoluha, G. E.; Gomez, R. M.] Naval Res Lab, Washington, DC USA. [Mooney, T.; Barrett, J. W.; Koda, J.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. [Parrish, A.] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA. [Santee, M. L.] CALTECH, Jet Prop Lab, Pasadena, CA USA. RP Connor, BJ (reprint author), BC Consulting Ltd, Alexandra, New Zealand. EM bcconsulting@xtra.co.nz FU NASA [NNX09AF40G]; National Aeronautics and Space Administration FX We thank the Caltech Submillimeter Observatory staff and management, and the NASA Upper Atmosphere Research Program, for their support of our measurements over more than 20 yr. Research at Stony Brook University was supported by NASA Grant NNX09AF40G. Work at the Jet Propulsion Laboratory, California Institute of Technology, was done under contract with the National Aeronautics and Space Administration. NR 11 TC 2 Z9 2 U1 0 U2 5 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1680-7316 J9 ATMOS CHEM PHYS JI Atmos. Chem. Phys. PY 2013 VL 13 IS 17 BP 8643 EP 8650 DI 10.5194/acp-13-8643-2013 PG 8 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 217YX UT WOS:000324400600008 ER PT J AU Zhang, X Huot, Y Gray, DJ Weidemann, A Rhea, WJ AF Zhang, X. Huot, Y. Gray, D. J. Weidemann, A. Rhea, W. J. TI Biogeochemical origins of particles obtained from the inversion of the volume scattering function and spectral absorption in coastal waters SO BIOGEOSCIENCES LA English DT Article ID INHERENT OPTICAL-PROPERTIES; LIGHT-SCATTERING; SIZE DISTRIBUTION; REFRACTIVE-INDEX; OPEN-OCEAN; BACKSCATTERING RATIO; NATURAL-WATERS; CHLOROPHYLL-A; CELL-SIZE; PHYTOPLANKTON PIGMENTS AB In the aquatic environment, particles can be broadly separated into phytoplankton (PHY), non-algal particle (NAP) and dissolved (or very small particle, VSP) fractions. Typically, absorption spectra are inverted to quantify these fractions, but volume scattering functions (VSFs) can also be used. Both absorption spectra and VSFs were used to estimate particle fractions for an experiment in the Chesapeake Bay. A complete set of water inherent optical properties was measured using a suite of commercial instruments and a prototype Multispectral Volume Scattering Meter (MVSM); the chlorophyll concentration, [Chl] was determined using the HPLC method. The total scattering coefficient measured by an ac-s and the VSF at a few backward angles measured by a HydroScat-6 and an ECO-VSF agreed with the LISST and MVSM data within 5 %, thus indicating inter-instrument consistency. The size distribution and scattering parameters for PHY, NAP and VSP were inverted from measured VSFs. For the absorption inversion, the "dissolved" absorption spectra were measured for filtrate passing through a 0.2 mu m filter, whereas [Chl] and NAP absorption spectra were inverted from the particulate fraction. Even though the total scattering coefficient showed no correlation with [Chl], estimates of [Chl] from the VSF-inversion agreed well with the HPLC measurements (r = 0.68, mean relative errors = -20 %). The scattering associated with NAP and VSP both correlated well with the NAP and "dissolved" absorption coefficients, respectively. While NAP dominated forward, and hence total, scattering, our results also suggest that the scattering by VSP was far from negligible and dominated backscattering. Since the sizes of VSP range from 0.02 to 0.2 mu m, covering (a portion of) the operationally defined "dissolved" matter, the typical assumption that colored dissolved organic matter (i.e., CDOM) does not scatter may not hold, particularly in a coastal or estuarine environment. C1 [Zhang, X.] Univ N Dakota, Grand Forks, ND 58202 USA. [Huot, Y.] Univ Sherbrooke, Ctr Applicat & Rech Teledetect, Sherbrooke, PQ J1K 2R1, Canada. [Gray, D. J.; Rhea, W. J.] US Naval Res Lab, Washington, DC 20375 USA. [Weidemann, A.] US Naval Res Lab, Stennis Space Ctr, MS 39529 USA. RP Zhang, X (reprint author), Univ N Dakota, Grand Forks, ND 58202 USA. EM zhang@aero.und.edu RI Huot, Yannick/B-4497-2008 OI Huot, Yannick/0000-0003-1793-761X FU US Office of Naval Research; Natural Sciences and Engineering Research Council of Canada (NSERC); Canada Research Chairs program; NASA [NNX10AH20G]; NSF [EPS-081442] FX This research was partially supported by the US Office of Naval Research. Y. Huot was supported by funding from the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Canada Research Chairs program. X. Zhang acknowledges partial funding support from NASA NNX10AH20G and NSF EPS-081442. We would like to thank Bill Snyder for organizing the deployment and Rick Gould for arranging water sample processing. Nutrient analysis was performed at the University of Maryland's Chesapeake Biological Laboratory, and chromatographic analysis at the University of Maryland's Horn Point Laboratory. NR 96 TC 6 Z9 6 U1 1 U2 15 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1726-4170 EI 1726-4189 J9 BIOGEOSCIENCES JI Biogeosciences PY 2013 VL 10 IS 9 BP 6029 EP 6043 DI 10.5194/bg-10-6029-2013 PG 15 WC Ecology; Geosciences, Multidisciplinary SC Environmental Sciences & Ecology; Geology GA 218VG UT WOS:000324460000017 ER PT S AU Hutcheson, AL Simonson, DL Christophersen, M Phlips, BF Charipar, NA Pique, A AF Hutcheson, Anthony L. Simonson, Duane L. Christophersen, Marc Phlips, Bernard F. Charipar, Nicholas A. Pique, Alberto BE Fountain, AW TI Neutron/gamma pulse shape discrimination (PSD) in plastic scintillators with digital PSD electronics SO CHEMICAL, BIOLOGICAL, RADIOLOGICAL, NUCLEAR, AND EXPLOSIVES (CBRNE) SENSING XIV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIV CY APR 30-MAY 03, 2013 CL Baltimore, MD SP SPIE DE Pulse shape discrimination; digital PSD; plastic scintillators; neutron detection; gamma detection ID LIQUID SCINTILLATORS AB Pulse shape discrimination (PSD) is a common method to distinguish between pulses produced by gamma rays and neutrons in scintillator detectors. This technique takes advantage of the property of many scintillators that excitations by recoil protons and electrons produce pulses with different characteristic shapes. Unfortunately, many scintillating materials with good PSD properties have other, undesirable properties such as flammability, toxicity, low availability, high cost, and/or limited size. In contrast, plastic scintillator detectors are relatively low-cost, and easily handled and mass-produced. Recent studies have demonstrated efficient PSD in plastic scintillators using a high concentration of fluorescent dyes. To further investigate the PSD properties of such systems, mixed plastic scintillator samples were produced and tested. The addition of up to 30 wt. % diphenyloxazole (DPO) and other chromophores in polyvinyltoluene (PVT) results in efficient detection with commercial detectors. These plastic scintillators are produced in large diameters up to 4 inches by melt blending directly in a container suitable for in-line detector use. This allows recycling and reuse of materials while varying the compositions. This strategy also avoids additional sample handling and polishing steps required when using removable molds. In this presentation, results will be presented for different mixed-plastic compositions and compared with known scintillating materials C1 [Hutcheson, Anthony L.; Simonson, Duane L.; Christophersen, Marc; Phlips, Bernard F.; Charipar, Nicholas A.; Pique, Alberto] US Naval Res Lab, Washington, DC 20375 USA. RP Hutcheson, AL (reprint author), US Naval Res Lab, Code 7654,4555 Overlook Ave SW, Washington, DC 20375 USA. EM anthony.hutcheson@nrl.navy.mil RI Christophersen, Marc/B-6795-2008 NR 6 TC 0 Z9 0 U1 0 U2 5 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9501-3 J9 PROC SPIE PY 2013 VL 8710 AR UNSP 87101K DI 10.1117/12.2018248 PG 8 WC Optics; Spectroscopy SC Optics; Spectroscopy GA BGM68 UT WOS:000323515900046 ER PT S AU Sivaprakasam, V Czege, J Eversole, JD AF Sivaprakasam, Vasanthi Czege, Jozsef Eversole, Jay D. BE Fountain, AW TI Wavelength resolved polarized elastic scatter measurements from micron sized single particles SO CHEMICAL, BIOLOGICAL, RADIOLOGICAL, NUCLEAR, AND EXPLOSIVES (CBRNE) SENSING XIV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIV CY APR 30-MAY 03, 2013 CL Baltimore, MD SP SPIE DE polarized scatter; Mueller matrix; aerosols; single particle ID LIGHT-SCATTERING; FLUORESCENCE AB The goal of this project is to investigate correlations of polarimetric angular scattering patterns from individual aerosol particles with the particles' physical structure and composition. Such signature patterns may be able to provide particle classification capability, such as, for example, discrimination between man-made and naturally occurring aerosols. If successful, this effort could improve current detection methods for biological warfare (BW) agent aerosols. So far, we have demonstrated an experimental arrangement to measure polarization-state resolved, multi-angle, scattering intensities from single aerosol particles on-the-fly. Our novel approach is a radical departure from conventional polarimetric measurement methods, and a key factor is the use of a multiple-order retarder to prepare different polarization states, depending on the wavelength of the incident light. This novel experimental technique uses a super-continuum light source, an array of optical fibers, an imaging spectrometer and an EMCCD camera to simultaneously acquire wavelength and angle dependent particle light scattering data as a two-dimensional snapshot. Mueller matrix elements were initially measured from individual particles held in an optical trap (at 405 nm). Since particles can be stably trapped for long periods (hours), we were able to change the optical configuration to acquire multiple Mueller matrix element measurements on a single particle. We have computationally modeled these measurements at specific angles, and the comparison with experimental measurements shows good agreement. Similar measurements have also been made on slowly falling particles, and our current efforts are focused on improving experimental technique sufficiently to make such measurements on flowing particles. C1 [Sivaprakasam, Vasanthi; Czege, Jozsef; Eversole, Jay D.] Naval Res Lab, Washington, DC 20375 USA. RP Sivaprakasam, V (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 10 TC 1 Z9 1 U1 3 U2 12 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9501-3 J9 PROC SPIE PY 2013 VL 8710 AR UNSP 871018 DI 10.1117/12.2016398 PG 6 WC Optics; Spectroscopy SC Optics; Spectroscopy GA BGM68 UT WOS:000323515900037 ER PT S AU Nguyen, V Papantonakis, M Furstenberg, R Kendziora, C McGill, RA AF Viet Nguyen Papantonakis, Michael Furstenberg, Robert Kendziora, Christopher McGill, R. Andrew BE Fountain, AW TI "Real World" Particulate Explosives Test Coupons for Optical Detection Applications SO CHEMICAL, BIOLOGICAL, RADIOLOGICAL, NUCLEAR, AND EXPLOSIVES (CBRNE) SENSING XIV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIV CY APR 30-MAY 03, 2013 CL Baltimore, MD SP SPIE DE Explosives detection; test coupon; trace detection; particles; particle image analysis; sieving; inkjetting; contact angle ID PARTICLE STANDARDS; DETECTION SYSTEMS; RDX AB Trace or residue explosives detection typically involves examining explosives found as solid particles on a solid substrate. Different optical spectroscopy techniques are being developed to detect these explosives in situ by probing how light interacts with the surface bound particles of explosives. In order to evaluate these technologies it is important to have available suitable test coupons coated with particles of explosives. When fabricating test coupons to evaluate detection performance or help train a detection algorithm, it is important to use realistic test coupons and consider how the physicochemical properties of the explosives particles, related chemicals, and substrate may affect the spectra produced or signal intensities observed. Specific features of interest include surface fill factor, particle sizes, areal density, degree of particle contact with a substrate and any other chemicals in addition to the explosives and substrate. This level of complexity highlights the need to fabricate test coupons which mimic "real world" particle coated surfaces. With respect to metrics derived from fingerprints, we compare the properties of test coupons fabricated by sieving and inkjetting for ammonium nitrate, TNT, RDX, and sucrose on stainless steel, automotive painted steel, glass and polyethylene substrates. Sieving provides a random distribution of particles, allows fractionation of relevant particle sizes and allows relevant surface fill factors to be achieved. Inkjetting provides precise control of aerial density but because of complications related to solvent-substrate interactions, relevant fill factors and particle sizes are difficult to achieve. In addition, we introduce a custom image analysis technique, NRL ParticleMath, developed to characterize and quantify particle loadings on test coupons. C1 [Viet Nguyen; Papantonakis, Michael; Furstenberg, Robert; Kendziora, Christopher; McGill, R. Andrew] US Naval Res Lab, Washington, DC 20375 USA. RP Nguyen, V (reprint author), US Naval Res Lab, Code 6365, Washington, DC 20375 USA. EM mcgill@nrl.navy.mil NR 10 TC 3 Z9 3 U1 1 U2 12 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9501-3 J9 PROC SPIE PY 2013 VL 8710 AR UNSP 87100T DI 10.1117/12.2015097 PG 11 WC Optics; Spectroscopy SC Optics; Spectroscopy GA BGM68 UT WOS:000323515900026 ER PT J AU Chen, HC Denning, D Roberts, N Larson, CA Yu, XM Huang, CN AF Chen, Hsinchun Denning, Dorothy Roberts, Nancy Larson, Catherine A. Yu, Ximing Huang, Chun-Neng BA Yang, C Mao, W Zheng, X Wang, H BF Yang, C Mao, W Zheng, X Wang, H TI Revealing the Hidden World of the Dark Web: Social Media Forums and Videos SO INTELLIGENT SYSTEMS FOR SECURITY INFORMATICS SE Intelligent Systems Series LA English DT Article; Book Chapter ID EXTREMIST GROUPS; COMMUNICATION; FRAMEWORK; TERRORISM; NETWORKS; MESSAGES; LINK C1 [Chen, Hsinchun; Larson, Catherine A.; Yu, Ximing; Huang, Chun-Neng] Univ Arizona, Dept Management Informat Syst, Tucson, AZ 85721 USA. [Denning, Dorothy; Roberts, Nancy] Naval Postgrad Sch, Dept Def Anal, Monterey, CA USA. RP Chen, HC (reprint author), Univ Arizona, Dept Management Informat Syst, Tucson, AZ 85721 USA. NR 23 TC 24 Z9 26 U1 0 U2 6 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405902-3 J9 INTELL SYST SER PY 2013 BP 1 EP 28 DI 10.1016/B978-0-12-404702-0.00001-X PG 28 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BGQ41 UT WOS:000323774000002 ER PT S AU Gordon, DF Helle, MH Kaganovich, D Ting, A Hafizi, B AF Gordon, Daniel F. Helle, Michael H. Kaganovich, Dmitri Ting, Antonio Hafizi, Bahman BE Esarey, E Schroeder, CB Leemans, WP Ledingham, KWD Jaroszynski, DA TI Laser Acceleration and Injection of Particles in Optically Shaped Gas Targets SO LASER ACCELERATION OF ELECTRONS, PROTONS, AND IONS II; AND MEDICAL APPLICATIONS OF LASER-GENERATED BEAMS OF PARTICLES II; AND HARNESSING RELATIVISTIC PLASMA WAVES III SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser Acceleration of Electrons, Protons, and Ions II; and Medical Applications of Laser-Generated Beams of Particles II; and Harnessing Relativistic Plasma Waves III CY APR 15-18, 2013 CL Prague, CZECH REPUBLIC SP SPIE DE gas jet; electron acceleration; ion acceleration ID PLASMA WAVE-GUIDE; BEAMS; PULSES AB Blast waves ignited in a supersonic flow are capable of producing density profiles useful for laser acceleration of electrons and ions. By using a approximate to 0.1 joule nanosecond laser as an igniter, and controlling the angle of incidence and timing of the ultra-intense femtosecond drive pulse, one can produce a variety of gas density profiles. A profile with an abrupt up-ramp followed by a gradual down-ramp leads experimentally to stable generation of 40 MeV electrons from a 10 TW drive pulse. A profile with a narrow high density region, and a steep density ramp on one side, is useful for magnetic vortex acceleration of ions. Simulations predict that such a profile can be generated from a laser ignited blast wave, and that 35 MeV protons are produced when a 100 TW pulse is focused into the shock front. C1 [Gordon, Daniel F.; Helle, Michael H.; Kaganovich, Dmitri; Ting, Antonio; Hafizi, Bahman] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. RP Gordon, DF (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. EM daniel.gordon@nrl.navy.mil OI Kaganovich, Dmitri/0000-0002-0905-5871 NR 28 TC 3 Z9 3 U1 0 U2 6 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9581-5 J9 PROC SPIE PY 2013 VL 8779 AR UNSP 877902 DI 10.1117/12.2017510 PG 11 WC Engineering, Biomedical; Optics; Physics, Particles & Fields SC Engineering; Optics; Physics GA BGN03 UT WOS:000323544600001 ER PT J AU Wheeler, B AF Wheeler, Brannon TI Guillaume Postel and the Primordial Origins of the Middle East SO METHOD & THEORY IN THE STUDY OF RELIGION LA English DT Article DE Guillaume Postel; middle east; orientalism; apocalyptism; ottomans; semitic ID POSTEL,GUILLAUME AB Guillaume Postel is often credited as one of the founding fathers of the modern "orientalist" European study of the Middle East, and of Arabic, Islam, and the Quran in particular. He published his most influential work in 1544, calling on the French king to lead a Crusade against the Ottomans and usher in a new, apocalyptic age. Although usually credited as a pioneer in the comparative study of Semitic languages, an influential figure in French-Ottoman relations, and as one of the first Europeans to study the Quran in comparison with the Bible, it was the unique sixteenth-century renaissance combination of apocalyptism, European nationalism, and alchemy behind the specific formation of Postel's universal linguistic theories that would most influence future scholarship. The following pages examine the historical context in which Postel produced his work with particular attention to the apocalyptism of his religious ideas and the kabbalistic sources of his linguistic scholarship. C1 US Naval Acad, Ctr Middle East & Islamic Studies, Annapolis, MD 21402 USA. RP Wheeler, B (reprint author), US Naval Acad, Ctr Middle East & Islamic Studies, 107 Maryland Ave, Annapolis, MD 21402 USA. EM bwheeler@usna.edu NR 93 TC 0 Z9 0 U1 0 U2 2 PU BRILL ACADEMIC PUBLISHERS PI LEIDEN PA PLANTIJNSTRAAT 2, P O BOX 9000, 2300 PA LEIDEN, NETHERLANDS SN 0943-3058 J9 METH THEORY STUD REL JI Meth. Theory Study Relig. PY 2013 VL 25 IS 3 BP 244 EP 263 DI 10.1163/15700682-12341262 PG 20 WC Religion SC Religion GA 200RH UT WOS:000323086100002 ER PT B AU Feemster, MG AF Feemster, Matthew G. GP ASME TI A LEARNING ESTIMATOR FOR JITTER REDUCTION IN A DIRECTED ENERGY SYSTEM SO PROCEEDINGS OF THE ASME 5TH ANNUAL DYNAMIC SYSTEMS AND CONTROL DIVISION CONFERENCE AND JSME 11TH MOTION AND VIBRATION CONFERENCE, DSCC 2012, VOL 1 LA English DT Proceedings Paper CT 5th Annual Dynamic Systems and Control Division Conference / 11th JSME Motion and Vibration Conference CY OCT 17-19, 2012 CL Ft Lauderdale, FL SP ASME, DSCD, JSME ID ADAPTIVE-CONTROL; LASER AB In this paper; a position regulation control strategy is developed for a platform mounted laser operating in the presence of a bounded, periodic disturbance. Specifically, the proposed control method utilizes an iterative learning estimator that is designed in order to promote system stability and asymptotically regulate the laser's target position to a desired location. The learning estimator requires that the disturbance be bounded and its period to be known. Simulation and experimental results are provided to demonstrate the efficacy of the proposed method. C1 US Naval Acad, Weap & Syst Engn Dept, Annapolis, MD 21402 USA. RP Feemster, MG (reprint author), US Naval Acad, Weap & Syst Engn Dept, Annapolis, MD 21402 USA. EM feemster@usna.edu NR 7 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 978-0-7918-4529-5 PY 2013 BP 927 EP 932 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic; Engineering, Mechanical SC Automation & Control Systems; Engineering GA BGR81 UT WOS:000323918100109 ER PT S AU Crouse, DF AF Crouse, David Frederic BE Kadar, I TI Advances in Displaying Uncertain Estimates of Multiple Targets SO SIGNAL PROCESSING, SENSOR FUSION, AND TARGET RECOGNITION XXII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Signal Processing, Sensor Fusion, and Target Recognition XXII CY APR 29-MAY 02, 2013 CL Baltimore, MD SP SPIE ID PROBABILISTIC DATA ASSOCIATION; MULTIDIMENSIONAL ASSIGNMENT PROBLEM; MULTITARGET TRACKING ALGORITHM; AUGMENTING PATH ALGORITHM; COALESCENCE; PARALLELIZATION; BIASES AB Both maximum likelihood estimation as well as minimum mean optimal subpattern assignment (MMOSPA) estimation have been shown to provide meaningful estimates in instances of target identity uncertainty when the number of targets present is known. Maximum likelihood measurement to track association (2D assignment) has been widely studied and is reviewed in this paper. However, it is widely believed that approximate MMOSPA estimation can not be performed in real time except when considering a very small number of targets. This paper demonstrates the MMOSPA estimator arises as a special case of a minimum mean Wasserstein metric estimator when the number of targets is unknown. Additionally, it is shown that approximate MMOSPA estimates can be calculated in microseconds to miliseconds without extensive optimization, making MMOSPA estimation a practicable alternative to more traditional estimators. C1 Naval Res Lab, Washington, DC USA. RP Crouse, DF (reprint author), Naval Res Lab, Washington, DC USA. NR 101 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 978-0-8194-9536-5 J9 PROC SPIE PY 2013 VL 8745 AR UNSP 874504 DI 10.1117/12.2015147 PG 31 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BGN53 UT WOS:000323570300014 ER PT S AU Kendziora, CA Furstenberg, R Papantonakis, M Nguyen, V Borchert, J Byers, J McGill, RA AF Kendziora, Christopher A. Furstenberg, Robert Papantonakis, Michael Viet Nguyen Borchert, James Byers, Jeff McGill, R. Andrew BE Broach, JT Isaacs, JC TI Infrared photothermal imaging of trace explosives on relevant substrates SO DETECTION AND SENSING OF MINES, EXPLOSIVE OBJECTS, AND OBSCURED TARGETS XVIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVIII CY APR 29-MAY 02, 2013 CL Baltimore, MD SP SPIE DE explosives; stand-off detection; infrared; QCL; imaging; focal plane array; photothermal; algorithm ID SURFACES AB We are developing a technique for the stand-off detection of trace explosives on relevant substrate surfaces using photo-thermal infrared (IR) imaging spectroscopy (PT-IRIS). This approach leverages one or more compact IR quantum cascade lasers, tuned to strong absorption bands in the analytes and directed to illuminate an area on a surface of interest. An IR focal plane array is used to image the surface and detect small increases in thermal emission upon laser illumination. The PT-IRIS signal is processed as a hyperspectral image cube comprised of spatial, spectral and temporal dimensions as vectors within a detection algorithm. The ability to detect trace analytes on relevant substrates is critical for stand-off applications, but is complicated by the optical and thermal analyte/substrate interactions. This manuscript describes recent PT-IRIS experimental results and analysis for traces of RDX, TNT, ammonium nitrate (AN) and sucrose on relevant substrates (steel, polyethylene, glass and painted steel panels). We demonstrate that these analytes can be detected on these substrates at relevant surface mass loadings (10 mu g/cm(2) to100 mu g/cm(2)) even at the single pixel level. C1 [Kendziora, Christopher A.; Furstenberg, Robert; Papantonakis, Michael; Viet Nguyen; Borchert, James; Byers, Jeff; McGill, R. Andrew] Naval Res Lab, Washington, DC 20375 USA. RP Kendziora, CA (reprint author), Naval Res Lab, Code 6365,4555 Overlook Ave SW, Washington, DC 20375 USA. EM kendziora@nrl.navy.mil NR 13 TC 4 Z9 4 U1 3 U2 9 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9500-6 J9 PROC SPIE PY 2013 VL 8709 AR UNSP 87090O DI 10.1117/12.2015970 PG 15 WC Engineering, Electrical & Electronic; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BGN43 UT WOS:000323561500020 ER PT J AU DeSario, PA Pietron, JJ DeVantier, DE Brintlinger, TH Stroud, RM Rolison, DR AF DeSario, Paul A. Pietron, Jeremy J. DeVantier, Devyn E. Brintlinger, Todd H. Stroud, Rhonda M. Rolison, Debra R. TI Plasmonic enhancement of visible-light water splitting with Au-TiO2 composite aerogels SO NANOSCALE LA English DT Article ID GOLD NANOPARTICLES; TITANIUM-DIOXIDE; PHOTOCATALYTIC ACTIVITY; ARRAY PHOTOANODES; TIO2 AEROGELS; SOLAR-CELLS; BAND-GAP; SEMICONDUCTOR; METAL; SIZE AB We demonstrate plasmonic enhancement of visible-light-driven splitting of water at three-dimensionally (3D) networked gold-titania (Au-TiO2) aerogels. The sol-gel-derived ultraporous composite nanoarchitecture, which contains 1 to 8.5 wt% Au nanoparticles and titania in the anatase form, retains the high surface area and mesoporosity of unmodified TiO2 aerogels and maintains stable dispersion of the similar to 5 nm Au guests. A broad surface plasmon resonance (SPR) feature centered at similar to 550 nm is present for the Au-TiO2 aerogels, but not Au-free TiO2 aerogels, and spans a wide range of the visible spectrum. Gold-derived SPR in Au-TiO2 aerogels cast as films on transparent electrodes drives photoelectrochemical oxidation of aqueous hydroxide and extends the photocatalytic activity of TiO2 from the ultraviolet region to visible wavelengths exceeding 700 nm. Films of Au-TiO2 aerogels in which Au nanoparticles are deposited on pre-formed TiO2 aerogels by a deposition-precipitation method (DP Au/TiO2) also photoelectrochemically oxidize aqueous hydroxide, but less efficiently than 3D Au-TiO2, despite having an essentially identical Au nanoparticle weight fraction and size distribution. For example, 3D Au-TiO2 containing 1 wt% Au is as active as DP Au/TiO2 with 4 wt% Au. The higher photocatalytic activity of 3D Au-TiO2 derives only in part from its ability to retain the surface area and porosity of unmodified TiO2 aerogel. The magnitude of improvement indicates that in the 3D arrangement either a more accessible photoelectrochemical reaction interphase (three-phase boundary) exists or more efficient conversion of excited surface plasmons into charge carriers occurs, thereby amplifying reactivity over DP Au/TiO2. The difference in photocatalytic efficiency between the two forms of Au-TiO2 demonstrates the importance of defining the structure of Au vertical bar vertical bar TiO2 interfaces within catalytic Au-TiO2 nanoarchitectures. C1 [DeSario, Paul A.; Pietron, Jeremy J.; DeVantier, Devyn E.; Rolison, Debra R.] US Naval Res Lab, Surface Chem Branch Code 6170, Washington, DC 20375 USA. [Brintlinger, Todd H.; Stroud, Rhonda M.] US Naval Res Lab, Mat & Sensors Branch Code 6360, Washington, DC 20375 USA. RP Pietron, JJ (reprint author), US Naval Res Lab, Surface Chem Branch Code 6170, Washington, DC 20375 USA. EM jeremy.pietron@nrl.navy.mil; rolison@nrl.navy.mil FU U.S. Office of Naval Research FX This work was supported by the U.S. Office of Naval Research. The authors would like to thank Jeffrey Owrutsky (NRL) for helpful discussions. NR 75 TC 47 Z9 47 U1 14 U2 211 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2040-3364 J9 NANOSCALE JI Nanoscale PY 2013 VL 5 IS 17 BP 8073 EP 8083 DI 10.1039/c3nr01429k PG 11 WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 198YA UT WOS:000322958800053 PM 23877169 ER PT B AU Cooper, KP AF Cooper, Khershed P. GP ASME TI DIRECT DIGITAL ADDITIVE MANUFACTURING AND CYBER-ENABLED MANUFACTURING SYSTEMS SO PROCEEDINGS OF THE ASME/ISCIE INTERNATIONAL SYMPOSIUM ON FLEXIBLE AUTOMATION, ISFA 2012 LA English DT Proceedings Paper CT ASME/ISCIE International Symposium on Flexible Automation (ISFA2012) CY JUN 18-20, 2012 CL St Louis, MO SP Amer Soc Mech Engineers AB The technology of direct digital additive manufacturing (D2AM) has received considerable attention in recent months. Several government agencies and commercial interests are planning to explore D2AM to find solutions to manufacturing problems. The attraction of D2AM is the benefit of rapidly producing without fixtures or tools or human intervention customized objects of complex geometry not possible by traditional methods. The interest in D2AM ranges from fabrication of critical, high value aerospace metallic components to fabrication of objects having an organic look or as nature would have intended(i). For D2AM to be commercially accepted, it must reliably and predictably make products. It must achieve consistency in reproducibility across relevant D2AM methods. The Office of Naval Research (ONR) has launched a new basic research program, known as Cyber-enabled Manufacturing Systems (CeMS). The long-range goal of the program is to achieve the level of control over D2AM processes for industrial acceptance and wide-use of the technology. This program will develop measuring, sensing and control models and algorithms for D2AM by harnessing principles underpinning cyber-physical systems (CPS) and fundamentals of physical processes. This paper describes the challenges facing D2AM and the CeMS program goals to meet them. C1 Naval Res Lab, Washington, DC USA. RP Cooper, KP (reprint author), Naval Res Lab, Washington, DC USA. NR 10 TC 0 Z9 0 U1 0 U2 10 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4511-0 PY 2013 BP 521 EP 524 PG 4 WC Automation & Control Systems; Engineering, Mechanical SC Automation & Control Systems; Engineering GA BGO46 UT WOS:000323630300078 ER PT S AU Sundaram, R Martin, R Anderson, C AF Sundaram, Ramakrishnan Martin, Richard Anderson, Christopher BE Dianat, SA Zoltowski, MD TI Regularization in Radio Tomographic Imaging SO WIRELESS SENSING, LOCALIZATION, AND PROCESSING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Wireless Sensing, Localization, and Processing VIII CY MAY 01-02, 2013 CL Baltimore, MD SP SPIE DE Linear least-squares model; scalar and vector regularization ID ARCHITECTURES; RESTORATION AB This paper demonstrates methods to select and apply regularization to the linear least-squares model formulation of the radio tomographic imaging (RTI) problem. Typically, the RTI inverse problem of image reconstruction is ill-conditioned due to the extremely small singular values of the weight matrix which relates the link signal strengths to the voxel locations of the obstruction. Regularization is included to offset the non-invertible nature of the weight matrix by adding a regularization term such as the matrix approximation of derivatives in each dimension based on the difference operator. This operation yields a smooth least-squares solution for the measured data by suppressing the high energy or noise terms in the derivative of the image. Traditionally, a scalar weighting factor of the regularization matrix is identified by trial and error (adhoc) to yield the best fit of the solution to the data without either excessive smoothing or ringing oscillations at the boundaries of the obstruction. This paper proposes new scalar and vector regularization methods that are automatically computed based on the weight matrix. Evidence of the effectiveness of these methods compared to the preset scalar regularization method is presented for stationary and moving obstructions in an RTI wireless sensor network. The variation of the mean square reconstruction error as a function of the scalar regularization is calculated for known obstructions in the network. The vector regularization procedure based on selective updates to the singular values of the weight matrix attains the lowest mean square error. C1 [Sundaram, Ramakrishnan] Gannon Univ, Erie, PA 16541 USA. [Martin, Richard] US Air Force, Inst Technol, Dayton, OH 45433 USA. [Anderson, Christopher] US Naval Acad, Annapolis, MD 21402 USA. RP Sundaram, R (reprint author), Gannon Univ, Erie, PA 16541 USA. NR 7 TC 1 Z9 1 U1 0 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 978-0-8194-9544-0 J9 PROC SPIE PY 2013 VL 8753 AR UNSP 87530O DI 10.1117/12.2012167 PG 9 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BGM98 UT WOS:000323541400020 ER PT S AU Goodman, RJB AF Goodman, Rae Jean B. BE Page, W TI Econometrics SO APPLICATIONS OF MATHEMATICS IN ECONOMICS SE MAA Notes LA English DT Article; Book Chapter C1 US Naval Acad, Dept Econ, Annapolis, MD USA. RP Goodman, RJB (reprint author), US Naval Acad, Dept Econ, Annapolis, MD USA. NR 10 TC 0 Z9 0 U1 1 U2 2 PU MATHEMATICAL ASSOC AMERICA SERVICE CENTER PI WASHINGTON PA PO BOX 91112, WASHINGTON, DC 20090-1112 USA SN 1556-6447 BN 978-0-88385-192-0 J9 MAA NOTES PY 2013 VL 82 BP 75 EP 89 D2 10.5948/9781614443179 PG 15 WC Education & Educational Research SC Education & Educational Research GA BGI27 UT WOS:000323088800006 ER PT S AU Smith, LN AF Smith, Leslie N. BE Ahmad, F TI How to find real-world applications for compressive sensing SO COMPRESSIVE SENSING II SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Compressive Sensing II CY MAY 02-03, 2013 CL Baltimore, MD SP SPIE DE Compressed sensing; target detection ID SIGNAL RECONSTRUCTION; PURSUIT AB The potential of compressive sensing (CS) has spurred great interest in the research community and is a fast growing area of research. However, research translating CS theory into practical hardware and demonstrating clear and significant benefits with this hardware over current, conventional imaging techniques has been limited. This article helps researchers to find those niche applications where the CS approach provides substantial gain over conventional approaches by articulating lessons learned in finding one such application; sea skimming missile detection. As a proof of concept, it is demonstrated that a simplified CS missile detection architecture and algorithm provides comparable results to the conventional imaging approach but using a smaller FPA. C1 US Naval Res Lab, Washington, DC 20375 USA. RP Smith, LN (reprint author), US Naval Res Lab, Washington, DC 20375 USA. NR 27 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 978-0-8194-9508-2 J9 PROC SPIE PY 2013 VL 8717 DI 10.1117/12.2018244 PG 10 WC Engineering, Electrical & Electronic; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BGN52 UT WOS:000323569000021 ER PT S AU Chang, DY Rowe, NC AF Chang, Daniel Y. Rowe, Neil C. BE Kelmelis, EJ TI Model-driven requirements engineering (MDRE) for real-time ultra-wide instantaneous bandwidth signal simulation SO MODELING AND SIMULATION FOR DEFENSE SYSTEMS AND APPLICATIONS VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Modeling and Simulation for Defense Systems and Applications VIII CY APR 30, 2013 CL Baltimore, MD SP SPIE DE decision tree; DFT filter bank; FPGA; MDRE; real-time; requirements; ultra-wide bandwidth AB While conducting a cutting-edge research in a specific domain, we realize that (1) requirements clarity and correctness are crucial to our success [1], (2) hardware is hard to change, most work is in software requirements development, coding and testing [2], (3) requirements are constantly changing, so that configurability, reusability, scalability, adaptability, modularity and testability are important non-functional attributes [3], (4) cross-domain knowledge is necessary for complex systems [4], and (5) if our research is successful, the results could be applied to other domains with similar problems. In this paper, we propose to use model-driven requirements engineering (MDRE) to model and guide our requirements/development, since models are easy to understand, execute, and modify. The domain for our research is Electronic Warfare (EW) real-time ultra-wide instantaneous bandwidth (IBW1) signal simulation. The proposed four MDRE models are (1) Switch-and-Filter architecture, (2) multiple parallel data bit streams alignment, (3) post-ADC and pre-DAC bits re-mapping, and (4) Discrete Fourier Transform (DFT) filter bank. This research is unique since the instantaneous bandwidth we are dealing with is in gigahertz range instead of conventional megahertz. C1 [Chang, Daniel Y.; Rowe, Neil C.] Naval Postgraduate Sch, Monterey, CA 93943 USA. RP Chang, DY (reprint author), Naval Postgraduate Sch, 1 Univ Circle, Monterey, CA 93943 USA. NR 13 TC 0 Z9 0 U1 0 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 978-0-8194-9543-3 J9 PROC SPIE PY 2013 VL 8752 AR UNSP 875204 DI 10.1117/12.2017567 PG 15 WC Optics; Telecommunications SC Optics; Telecommunications GA BGM85 UT WOS:000323524600003 ER PT S AU Walls, TJ Wilson, ML Partridge, DC Haws, JR Jensen, MD Johnson, TR Petersen, BD Sullivan, SW AF Walls, Thomas J. Wilson, Michael L. Partridge, Darin C. Haws, Jonathan R. Jensen, Mark D. Johnson, Troy R. Petersen, Brad D. Sullivan, Stephanie W. BE Braun, JJ TI Scalable sensor management for automated fusion and tactical reconnaissance SO MULTISENSOR, MULTISOURCE INFORMATION FUSION: ARCHITECTURES, ALGORITHMS, AND APPLICATIONS 2013 SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Multisensor, Multisource Information Fusion - Architectures, Algorithms, and Applications CY APR 30-MAY 01, 2013 CL Baltimore, MD SP SPIE DE multi-INT; data fusion; sensing modality; sensor management; network; sensor tasking; automation; algorithmic processing; scalable; systems-of-systems AB The capabilities of tactical intelligence, surveillance, and reconnaissance (ISR) payloads are expanding from single sensor imagers to integrated systems-of-systems architectures. Increasingly, these systems-of-systems include multiple sensing modalities that can act as force multipliers for the intelligence analyst. Currently, the separate sensing modalities operate largely independent of one another, providing a selection of operating modes but not an integrated intelligence product. We describe here a Sensor Management System (SMS) designed to provide a small, compact processing unit capable of managing multiple collaborative sensor systems on-board an aircraft. Its purpose is to increase sensor cooperation and collaboration to achieve intelligent data collection and exploitation. The SMS architecture is designed to be largely sensor and data agnostic and provide flexible networked access for both data providers and data consumers. It supports pre-planned and ad-hoc missions, with provisions for on-demand tasking and updates from users connected via data links. Management of sensors and user agents takes place over standard network protocols such that any number and combination of sensors and user agents, either on the local network or connected via data link, can register with the SMS at any time during the mission. The SMS provides control over sensor data collection to handle logging and routing of data products to subscribing user agents. It also supports the addition of algorithmic data processing agents for feature/target extraction and provides for subsequent cueing from one sensor to another. The SMS architecture was designed to scale from a small UAV carrying a limited number of payloads to an aircraft carrying a large number of payloads. The SMS system is STANAG 4575 compliant as a removable memory module (RMM) and can act as a vehicle specific module (VSM) to provide STANAG 4586 compliance (level-3 interoperability) to a non-compliant sensor system. The SMS architecture will be described and results from several flight tests and simulations will be shown. C1 [Walls, Thomas J.; Wilson, Michael L.] Naval Res Lab, Washington, DC 20375 USA. RP Walls, TJ (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 4 TC 1 Z9 1 U1 0 U2 6 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9547-1 J9 PROC SPIE PY 2013 VL 8756 AR UNSP 875605 DI 10.1117/12.2018296 PG 18 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BGN25 UT WOS:000323554800003 ER PT S AU Lewis, D Gould, RW Weidemann, A Ladner, S Lee, Z AF Lewis, David Gould, Richard W., Jr. Weidemann, Alan Ladner, Sherwin Lee, Zhongping BE Hou, WW Arnone, RA TI Bathymetry estimations using vicariously calibrated HICO data SO OCEAN SENSING AND MONITORING V SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring V CY APR 30-MAY 01, 2013 CL Baltimore, MD SP SPIE DE Remote Sensing; HICO; HOPE; Bathymetry; Vicarious Calibration; St. Andrews Bay AB The Hyperspectral Imager for the Coastal Ocean (HICO) is a prototype sensor installed on the International Space Station (ISS) designed to explore the management and capability of a space-borne hyperspectral sensor. The Office of Naval Research (ONR) funded the development and management of HICO. The Naval Research Laboratory (NRL) built and is involved in management of the HICO sensor. Bathymetry information is essential for naval operations in coastal regions. However, bathymetry may not be available in denied areas. HICO has a 100 meter spatial resolution, which makes it more capable for providing information within bays and estuaries than other sensors with coarser resolutions. Furthermore, its contiguous hyperspectral range is well suited to be used as input to the Hyperspectral Optimization Process Exemplar (HOPE) algorithm, which along with other absorption and backscattering values, estimates bottom albedo and water depth. Vicarious calibration uses in situ data to generate new gains and offsets that when applied to the top-of-atmosphere radiance values improves atmospheric correction results and the measurement of normalized water-leaving radiances. In situ remote sensing reflectance data collected in St. Andrews Bay were used to vicariously calibrate a coincident HICO scene. NRL's Automated Processing System (APS) was used to perform atmospheric correction and estimation of remote sensing reflectance (Rrs). The HOPE algorithm used the vicariously calibrated HICO Rrs values to estimate water depth. The results were validated with bathymetry maps from the NOAA National Ocean Service (NOS). C1 [Lewis, David; Gould, Richard W., Jr.; Weidemann, Alan; Ladner, Sherwin] NRL, Stennis Space Ctr, MS 39529 USA. RP Lewis, D (reprint author), NRL, Code 7331,Bldg 1009, Stennis Space Ctr, MS 39529 USA. EM david.lewis@nrlssc.navy.mil; rick.gould@nrlssc.navy.mil; alan.weidemann@nrlssc.navy.mil; sherwin.ladner@nrlssc.navy.mil; zhongping.lee@umb.edu NR 6 TC 2 Z9 2 U1 0 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 978-0-8194-9515-0 J9 PROC SPIE PY 2013 VL 8724 AR UNSP 87240N DI 10.1117/12.2017864 PG 12 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BGM74 UT WOS:000323517900021 ER PT S AU McBride, W Arnone, R Cayula, JF AF McBride, Walton Arnone, Robert Cayula, Jean-Francois BE Hou, WW Arnone, RA TI Improvements of Satellite SST Retrievals at Full Swath SO OCEAN SENSING AND MONITORING V SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring V CY APR 30-MAY 01, 2013 CL Baltimore, MD SP SPIE DE sea surface temperature; VIIRS satellite; remote sensing; full swath AB The ultimate goal of the prediction of Sea Surface Temperature (SST) from satellite data is to attain an accuracy of 0.3 degrees K or better when compared to floating or drifting buoys located around the globe. Current daytime SST algorithms are able to routinely achieve an accuracy of 0.5 degrees K for satellite zenith angles up to 53 degrees. The full scan swath of VIIRS (Visible Infrared Imaging Radiometer Suite) results in satellite zenith angles up to 70 degrees, so that successful retrieval of SST from VIIRS at these higher angles would greatly increase global coverage. However, the accuracy of present SST algorithms steadily degrades to nearly 0.7 degrees K as the satellite zenith angle reaches 70 degrees, due mostly to the effects of increased atmospheric path length. We investigated the use of T-field, a gap-free first guess temperature field used in NLSST, as a separate predictor to the MCSST algorithm in order to clearly evaluate its effects. Results of this new algorithm, TfieldSST, showed how its rms error is heavily dependent on the aggressiveness of the pre-filtering of buoy matchup data with respect to Tfield. It also illustrated the importance of fully exploiting the a priori satellite-only information contained in T-field, presently tamed in the NLSST algorithm due to the fact that it shows up as a multiplier to another predictor. Preliminary results show that SST retrievals using TfieldSST could be obtained using the full satellite swath with a 30% improvement in accuracy at large satellite zenith angles and that a fairly aggressive pre-filtering scheme could help attain the desired accuracy of 0.3 degrees K or better using over 75% of the buoy matchup data. C1 [McBride, Walton] Naval Res Lab, Stennis Space Ctr, MS 39529 USA. RP McBride, W (reprint author), Naval Res Lab, Code 7333,1009 Balch Blvd, Stennis Space Ctr, MS 39529 USA. EM walt.mcbride@nrlssc.navy.mil NR 5 TC 2 Z9 2 U1 0 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 978-0-8194-9515-0 J9 PROC SPIE PY 2013 VL 8724 AR UNSP 87240R DI 10.1117/12.2018399 PG 21 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BGM74 UT WOS:000323517900025 ER PT S AU Mullen, L O'Connor, S Cochenour, B Dalgleish, F AF Mullen, Linda O'Connor, Shawn Cochenour, Brandon Dalgleish, Fraser BE Hou, WW Arnone, RA TI State-of-the-art tools for next-generation underwater optical imaging systems SO OCEAN SENSING AND MONITORING V SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring V CY APR 30-MAY 01, 2013 CL Baltimore, MD SP SPIE DE underwater; laser; modulation; imaging ID LASER AB The detection and identification of underwater threats in coastal areas is of interest to the Navy. Conventional optical imaging systems are limited to scenarios where the number of attenuation lengths between the system and the object are less than 4. With a desire to operate at extended ranges and threats becoming smaller and better camouflaged, new approaches are needed. In response to these challenges, new transmitters and receivers are being developed to support the next-generation of underwater optical imaging systems. One of these systems is based on the modulated pulse concept where a pulsed laser source is encoded with a radar signal, and a range-gated, high-speed optical receiver recovers the radar modulation envelope. Subsequent processing of the radar signal provides a way to discriminate against multiply scattered light and to enhance image contrast and resolution. The challenge is developing transmitter and receiver hardware that meets the requirements of the modulated pulse technique. We report recent progress that has been made in developing modulated pulse transmitter and receiver hardware. A working prototype was demonstrated and tested in a controlled laboratory environment. The results of these initial experiments are presented. C1 [Mullen, Linda; O'Connor, Shawn; Cochenour, Brandon] Naval Air Syst Command, NAVAIR, Electroopt & Special Mission Sensors Div, Patuxent River, MD 20670 USA. RP Mullen, L (reprint author), Naval Air Syst Command, NAVAIR, Electroopt & Special Mission Sensors Div, 22347 Cedar Point Rd, Patuxent River, MD 20670 USA. NR 10 TC 0 Z9 0 U1 1 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 978-0-8194-9515-0 J9 PROC SPIE PY 2013 VL 8724 AR UNSP 872402 DI 10.1117/12.2018489 PG 8 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BGM74 UT WOS:000323517900002 ER PT S AU Shulman, I Frolov, S Anderson, S Penta, B Gould, R Sakalaukus, P Ladner, S AF Shulman, Igor Frolov, Sergey Anderson, Stephanie Penta, Brad Gould, Rick Sakalaukus, Peter Ladner, Sherwin BE Hou, WW Arnone, RA TI ASSIMILATION OF BIO-OPTICAL PROPERTIES INTO COUPLED PHYSICAL, BIO-OPTICAL COASTAL MODEL SO OCEAN SENSING AND MONITORING V SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring V CY APR 30-MAY 01, 2013 CL Baltimore, MD SP SPIE DE Ocean data assimilation; Ecosystem dynamics; Ocean Modeling and Prediction; Coastal Processes; Interdisciplinary Oceanography ID OCEAN DATA ASSIMILATION; ECOSYSTEM MODELS AB Data assimilation experiments with the coupled physical, bio-optical model of Monterey Bay are presented. The approach is based on the representation of the error covariances in the subspace of the multivariate (bio-optical, physical) empirical orthogonal functions (EOFs) estimated from the model run. Estimated coupled bio-optical, physical error covariances are used in the Kalman gain update providing updates of coupled bio-optical properties in accord with the model dynamics and available observations. With the assimilation of satellite-derived bio-optical properties (chlorophyll-a and absorption due to phytoplankton), the model was able to reproduce intensity and tendencies in subsurface chlorophyll distributions observed at water samples locations in the Monterey Bay, CA. Data assimilation also improved agreement between the observed and model-predicted ratios between diatoms and small phytoplankton populations. C1 [Shulman, Igor; Anderson, Stephanie; Penta, Brad; Gould, Rick; Sakalaukus, Peter; Ladner, Sherwin] Naval Res Lab, Div Oceanog, Stennis Space Ctr, MS USA. RP Shulman, I (reprint author), Naval Res Lab, Div Oceanog, Stennis Space Ctr, MS USA. OI Frolov, Sergey/0000-0002-9081-1979 NR 15 TC 0 Z9 0 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 978-0-8194-9515-0 J9 PROC SPIE PY 2013 VL 8724 AR UNSP 87240E DI 10.1117/12.2015476 PG 12 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BGM74 UT WOS:000323517900014 ER PT S AU Dowgiallo, DJ Rauen, S Peters, WM Polisensky, EJ AF Dowgiallo, David J. Rauen, Stephen Peters, Wendy M. Polisensky, Emil J. BE Wikner, DA Luukanen, AR TI Missile tracking and range safety: Tracking Interferometer Pathfinder System (TIPS) SO PASSIVE AND ACTIVE MILLIMETER-WAVE IMAGING XVI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Passive and Active Millimeter-Wave Imaging XVI CY MAY 02, 2013 CL Baltimore, MD SP SPIE DE Interferometer; receiver; tracking; imaging; missile; range safety AB The tracking of missiles at close range proximity has been an ongoing challenge for many launch environments. The ability to provide accurate missile trajectory information is imperative for range safety and early termination of flight. In an effort to provide a potential solution to tracking issues that have plagued many traditional techniques, the Tracking Interferometer Pathfinder System (TIPS) was developed at the Naval Research Laboratory, Washington, D. C. The paper herein describes the design, field test, and results of an interferometer deployed for missile tracking. C1 [Dowgiallo, David J.; Rauen, Stephen; Peters, Wendy M.; Polisensky, Emil J.] Naval Res Lab, Washington, DC 20375 USA. RP Dowgiallo, DJ (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM david.dowgiallo@nrl.navy.mil NR 5 TC 0 Z9 0 U1 1 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 978-0-8194-9506-8 J9 PROC SPIE PY 2013 VL 8715 AR UNSP 87150N DI 10.1117/12.2017896 PG 6 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BGO19 UT WOS:000323614300021 ER PT S AU Bayya, S Villalobos, G Kim, W Busse, L Sanghera, J AF Bayya, Shyam Villalobos, Guillermo Kim, Woohong Busse, Lynda Sanghera, Jasbinder BE Kazemi, AA Kress, BC Thibault, S TI Rugged Spinel Windows and Optics for Harsh Environments SO PHOTONIC APPLICATIONS FOR AEROSPACE, COMMERCIAL, AND HARSH ENVIRONMENTS IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Photonic Applications for Aerospace, Commercial, and Harsh Environments IV CY APR 29-MAY 01, 2013 CL Baltimore, MD SP SPIE DE Spinel; vis-IR windows; domes; HEL systems; photonic mast; IRCM systems AB Spinel is a rugged ceramic transparent from ultraviolet to midwave infrared (0.18 - 5.5 mu m) wavelengths. It has the best transmission from 4-5 mu m among the competing materials ALON and sapphire with comparable mechanical properties. We have developed low absorption loss spinel as an exit window aperture for High Energy Laser systems. We demonstrated that spinel possesses excellent thermo-optical characteristics required for the High Energy Laser systems and at the same time it can provide the necessary ruggedness desired for the realistic and harsh battlefield environment. We have demonstrated through testing that spinel can withstand very adverse conditions of rain, sand storms and salt fog conditions without any change in its optical performance. We have also developed rugged anti-reflective coatings and anti-reflective surface structures to maintain high optical transmission in adverse environment. C1 [Bayya, Shyam] Naval Res Lab, Washington, DC 20375 USA. RP Bayya, S (reprint author), Naval Res Lab, Code 5620,4555 Overlook Av SW, Washington, DC 20375 USA. NR 6 TC 1 Z9 1 U1 0 U2 12 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9511-2 J9 PROC SPIE PY 2013 VL 8720 AR UNSP 872007 DI 10.1117/12.2016309 PG 6 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BGL78 UT WOS:000323434800007 ER PT S AU Busse, L Kung, F Florea, C Shaw, B Aggarwal, I Sanghera, J AF Busse, Lynda Kung, Fred Florea, Catalin Shaw, Brandon Aggarwal, Ishwar Sanghera, Jas BE Kazemi, AA Kress, BC Thibault, S TI Thermal and Vibration Testing of Ruggedized IR-Transmitting Fiber Cables SO PHOTONIC APPLICATIONS FOR AEROSPACE, COMMERCIAL, AND HARSH ENVIRONMENTS IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Photonic Applications for Aerospace, Commercial, and Harsh Environments IV CY APR 29-MAY 01, 2013 CL Baltimore, MD SP SPIE DE Ruggedized IR fiber cables; environmental testing; moth eye anti-reflective surfaces; laser transmission AB We present successful results obtained for thermal/vibration testing of ruggedized, IR-transmitting chalcogenide glass fiber cables using a government facility with state-of-the-art equipment capable of MIL-SPEC environmental testing. We will also present results of a direct imprinting process to create novel "moth eye" patterned surfaces on the IR fiber cable ends that significantly reduces endface reflection losses from 17% to less than 3%. The cables with these imprinted "moth eye" ends transmit much higher IR laser power without damage than was obtained for previous cables with traditional AR coatings. C1 [Busse, Lynda; Shaw, Brandon; Sanghera, Jas] Naval Res Lab, Washington, DC 20375 USA. RP Busse, L (reprint author), Naval Res Lab, Code 5620,4555 Overlook Av SW, Washington, DC 20375 USA. NR 3 TC 1 Z9 1 U1 1 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 978-0-8194-9511-2 J9 PROC SPIE PY 2013 VL 8720 AR UNSP 87200T DI 10.1117/12.2016156 PG 8 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BGL78 UT WOS:000323434800026 ER PT S AU Namkung, J Kulowitch, P Schwartz, A AF Namkung, Juock Kulowitch, Paul Schwartz, Andy BE Kazemi, AA Kress, BC Thibault, S TI Optical fiber sensing of corroded materials using optical fibers as remote probes SO PHOTONIC APPLICATIONS FOR AEROSPACE, COMMERCIAL, AND HARSH ENVIRONMENTS IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Photonic Applications for Aerospace, Commercial, and Harsh Environments IV CY APR 29-MAY 01, 2013 CL Baltimore, MD SP SPIE DE Optical fiber; Optical fiber sensing; Corrosion sensing; Remote sensing; Evanescent wave; Health monitoring; Non destructive evaluation; Chemical sensing AB The purpose of this effort is to apply an in-situ corrosion remote sensing capability in aircraft structural environments. The technique will permit detection of corrosion on and within aircraft structures and component junctions that are susceptible to corrosion, but which are not accessible for visual inspection. The field application configuration includes surface and embedded optical fiber probes interfaced with a Fourier Transform Infrared (FTIR) interferometer for evanescent wave absorption spectroscopic measurements. The mature and fielded technique will allow periodic remote sensing for structural health monitoring and detection of corrosion. The potential advantages of optical fiber sensors result from the fact that the sensing element, the optical fiber, is small size, light weight, and immune to electromagnetic field. Also it can be attached to surfaces or embedded in junctions in aircraft structures, in locations where humidity and corrosion can accumulate, but cannot be directly observed. C1 [Namkung, Juock; Kulowitch, Paul; Schwartz, Andy] Naval Air Syst Command, Patuxent River, MD USA. RP Namkung, J (reprint author), Naval Air Syst Command, Patuxent River, MD USA. NR 7 TC 0 Z9 0 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 978-0-8194-9511-2 J9 PROC SPIE PY 2013 VL 8720 AR UNSP 87201F DI 10.1117/12.2030599 PG 5 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BGL78 UT WOS:000323434800046 ER PT S AU Walls, TJ Wilson, ML Madsen, D Knight, C Jensen, MD Partridge, DC Addario, M AF Walls, Thomas J. Wilson, Michael L. Madsen, David Knight, Chad Jensen, Mark D. Partridge, Darin C. Addario, Mike BE Ranney, KI Doerry, A TI Compact, Autonomous, Multi-Mission Synthetic Aperture Radar SO RADAR SENSOR TECHNOLOGY XVII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Radar Sensor Technology XVII CY APR 29-MAY 01, 2013 CL Baltimore, MD SP SPIE DE SAR; UAS; real-time; automation; algorithmic processing; scalable AB The utilization of unmanned aerial systems (UASs) for intelligence, surveillance and reconnaissance (ISR) applications continues to increase and unmanned systems have become a critical asset in current and future battlespaces. With the development of medium-to-low altitude, rapidly deployable aircraft platforms, the ISR community has seen an increasing push to develop ISR sensors and systems with real-time mission support capabilities. This paper describes the design and development of the RASAR (Real-time, Autonomous, Synthetic Aperture Radar) sensor system and presents demonstration flight test results. RASAR is a modular, multi-band (L and X) synthetic aperture radar (SAR) imaging sensor designed for self-contained, autonomous, real-time operation with mission flexibility to support a wide range of ISR needs within the size, weight and power constraints of Group III UASs. SAR waveforms are generated through direct digital synthesis enabling arbitrary waveform notching to enable operations in cluttered RF environments. RASAR is capable of simultaneous dual-channel receive to enable polarization based target discrimination. The sensor command and control and real-time image formation processing are designed to enable integration of RASAR into larger, multi-intelligence system of systems. The multi-intelligence architecture and a demonstration of real-time autonomous cross-cueing of a separate optical sensor will be presented. C1 [Walls, Thomas J.; Wilson, Michael L.] USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Madsen, David; Knight, Chad; Jensen, Mark D.; Partridge, Darin C.] Utah State Univ, Red Fdn, Space Dynam Lab, Logan, UT 84322 USA. [Addario, Mike] SRC Inc, N Syracuse, NY 13212 USA. RP Walls, TJ (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 6 TC 2 Z9 2 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 978-0-8194-9505-1 J9 PROC SPIE PY 2013 VL 8714 AR UNSP 87140Y DI 10.1117/12.2018282 PG 12 WC Optics; Telecommunications SC Optics; Telecommunications GA BGN39 UT WOS:000323559400030 ER PT S AU Furstenberg, R Kendziora, C Papantonakis, M Nguyen, V McGill, A AF Furstenberg, Robert Kendziora, Chris Papantonakis, Michael Viet Nguyen McGill, Andrew BE Postek, MT Newbury, DE Platek, SF Maugel, TK TI Advances in photo-thermal infrared imaging microspectroscopy SO SCANNING MICROSCOPIES 2013: ADVANCED MICROSCOPY TECHNOLOGIES FOR DEFENSE, HOMELAND SECURITY, FORENSIC, LIFE, ENVIRONMENTAL, AND INDUSTRIAL SCIENCES SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Scanning Microscopies - Advanced Microscopy Technologies for Defense, Homeland Security, Forensic, Life, Environmental, and Industrial Sciences CY APR 30-MAY 01, 2013 CL Baltimore, MD SP SPIE DE Chemical imaging; Micro-spectroscopy; Quantum cascade laser; Photo-thermal; Laser heating; Reflectance; Mie scattering; Forensics ID PARTICLES AB There is a growing need for chemical imaging techniques in many fields of science and technology: forensics, materials science, pharmaceutical and chemical industries, just to name a few. While FTIR micro-spectroscopy is commonly used, its practical resolution limit of about 20 microns or more is often insufficient. Raman micro-spectroscopy provides better spatial resolution (similar to 1 micron), but is not always practical because of samples exhibiting fluorescence or low Raman scattering efficiency. We are developing a non-contact and non-destructive technique we call photo-thermal infrared imaging spectroscopy (PT-IRIS). It involves photo-thermal heating of the sample with a tunable quantum cascade laser and measuring the resulting increase in thermal emission with an infrared detector. Photo-thermal emission spectra resemble FTIR absorbance spectra and can be acquired in both stand-off and microscopy configurations. Furthermore, PT-IRIS allows the acquisition of absorbance-like photo-thermal spectra in a reflected geometry, suitable for field applications and for in-situ study of samples on optically IR-opaque substrates (metals, fabrics, paint, glass etc.). Conventional FTIR microscopes in reflection mode measure the reflectance spectra which are different from absorbance spectra and are usually not catalogued in FTIR spectral libraries. In this paper, we continue developing this new technique. We perform a series of numerical simulations of the laser heating of samples during photo-thermal microscopy. We develop parameterized formulas to help the user pick the appropriate laser illumination power. We also examine the influence of sample geometry on spectral signatures. Finally, we measure and compare photo-thermal and reflectance spectra for two test samples. C1 [Furstenberg, Robert; Kendziora, Chris; Papantonakis, Michael; Viet Nguyen; McGill, Andrew] US Naval Res Lab, Washington, DC 20375 USA. RP Furstenberg, R (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM robert.furstenberg@nrl.navy.mil NR 13 TC 4 Z9 4 U1 1 U2 10 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9520-4 J9 PROC SPIE PY 2013 VL 8729 AR UNSP 87290H DI 10.1117/12.2015990 PG 11 WC Microscopy; Optics SC Microscopy; Optics GA BGM29 UT WOS:000323493900012 ER PT S AU Manzur, T Zeller, J Magee, E AF Manzur, Tariq Zeller, John Magee, Eric BE Carapezza, EM TI Near-marine boundary layer atmospheric and turbulence measurement and modeling SO SENSORS, AND COMMAND, CONTROL, COMMUNICATIONS, AND INTELLIGENCE (C3I) TECHNOLOGIES FOR HOMELAND SECURITY AND HOMELAND DEFENSE XII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense XII CY APR 29-MAY 01, 2013 CL Baltimore, MD SP SPIE DE Free-space optics; marine boundary layer; communication networks; turbulence; MODTRAN ID REFRACTIVE-INDEX; PARAMETER; OPTICS AB Currently there are extensive modeling and measurement capabilities for the region extending from 100 ft above sea surface to space, but few such capabilities exist for the region extending up to 10 ft above the sea surface. By measuring and characterizing conditions in the marine boundary layer existing below 30 ft above the sea surface such as turbulence and extinction, the optical communication capabilities of maritime vessels when operating at or near the surface may be extended and enhanced. Key physical parameters such as absorption, scattering, and turbulence strength (C-n(2)) along the propagation path have a degree of variability on meteorological conditions as well optical wavelength. Modeling of the atmospheric environment is thus critical in order to generate a good understanding of optical propagation through the atmosphere. NUWC is utilizing software provided by MZA to model C-n(2) and resultant beam propagation characteristics through the near-marine boundary layer. We are developing the capability of near-marine boundary layer atmospheric and turbulence measurements and modeling as well as optical laser link testing at outdoor test sites. Measurements are performed with optical laser links (e. g., bit rate error), scintillometer, and particle image velocimetry (PIV) cameras, while turbulence and propagation modeling is achieved using MODTRAN5, ATMTools, NSLOT, LEEDR, and WaveTrain modeling and simulation code. By better understanding the effects of turbulence on optical transmission in the near-marine boundary layer through modeling and experimental measurements, measures can be implemented to reduce the bit error rate and increase data throughput, enabling more efficient and accurate communication link capabilities. C1 [Manzur, Tariq] Naval Undersea Warfare Ctr, Newport, RI 02841 USA. RP Manzur, T (reprint author), Naval Undersea Warfare Ctr, 1176 Howell St, Newport, RI 02841 USA. NR 13 TC 1 Z9 1 U1 2 U2 5 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9502-0 J9 PROC SPIE PY 2013 VL 8711 AR UNSP 871117 DI 10.1117/12.2020799 PG 10 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BGM80 UT WOS:000323522600027 ER PT S AU Harris, DC Cambrea, L AF Harris, Daniel C. Cambrea, Lee BE Tustison, RW Zelinski, BJ TI Assessment of Low-Expansion Tungstates for Thermal-Shock-Resistant Infrared Windows SO WINDOW AND DOME TECHNOLOGIES AND MATERIALS XIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Window and Dome Technologies and Materials XIII CY MAY 01-02, 2013 CL Baltimore, MD SP SPIE ID CERAMICS; ZRW2O8; DIAMOND AB Low-thermal-expansion tungstate materials have the potential to be used as thermal-shock-resistant midwave (3-5 mu m) infrared windows. Material properties that favor thermal shock resistance are high strength, high thermal conductivity, low elastic modulus, and low thermal expansion. Sapphire, for example, owes its high thermal shock resistance to high strength and high thermal conductivity. In principle, it is possible to obtain even higher thermal shock resistance if a window material with near-zero thermal expansion can be made. This paper assesses recent work on Zr(WO4)(2) and Al0.5Sc1.5(WO4)(3). It is concluded that multi-phonon absorption in the midwave spectral region limits the optical capabilities of tungstate materials. These materials have more absorption-and therefore, more emission-than aluminum oxynitride in the 4-5 mu m wavelength region. C1 [Harris, Daniel C.; Cambrea, Lee] Naval Air Syst Command, China Lake, CA USA. RP Harris, DC (reprint author), Naval Air Syst Command, China Lake, CA USA. EM Daniel.Harris@navy.mil NR 23 TC 0 Z9 0 U1 1 U2 7 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9499-3 J9 PROC SPIE PY 2013 VL 8708 AR UNSP 870809 DI 10.1117/12.2014815 PG 14 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing; Optics SC Materials Science; Optics GA BGM25 UT WOS:000323491200005 ER PT S AU Johnson, SD Kub, FJ Eddy, CR AF Johnson, S. D. Kub, F. J. Eddy, C. R., Jr. BE Tustison, RW Zelinski, BJ TI ZnS/diamond composite coatings for infrared transmission applications formed by the aerosol deposition method SO WINDOW AND DOME TECHNOLOGIES AND MATERIALS XIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Window and Dome Technologies and Materials XIII CY MAY 01-02, 2013 CL Baltimore, MD SP SPIE DE Aerosol Deposition Method; Zinc Sulfide; Diamond; Abrasion Resistance; Protective Coating; Thick Films; Infrared Transmission ID ROOM-TEMPERATURE; FILMS; DIAMOND; INDENTATION; PARTICLES; POWDER AB The deposition of nano-crystalline ZnS/diamond composite protective coatings on silicon, sapphire, and ZnS substrates, as a preliminary step to coating infrared transparent ZnS substrates from powder mixtures by the aerosol deposition method is presented. Advantages of aerosol deposition method include the ability to form dense, nanocrystalline films up to hundreds of microns thick at room temperature and at a high deposition rate on a variety of substrates. Deposition is achieved by creating a pressure gradient that accelerates micrometer-scale particles in an aerosol to high velocity. Upon impact with the target substrate the particles fracture and embed. Continued deposition forms the thick compacted film. Deposition from an aerosolized mixtures of ZnS and diamond powders onto all targets results in linear trend from apparent sputter erosion of the substrate at 100% diamond to formation of a film with increasing fractions of ZnS. The cross from abrasion to film formation on sapphire occurs above about 50% ZnS and a mixture of 90% ZnS and 10% diamond forms a well-adhered film of about 0.7 mu m thickness at a rate of 0.14 mu m/min. Resulting films are characterized by scanning electron microscopy, profilometry, infrared transmission spectroscopy, and x-ray photoemission spectroscopy. These initial films mark progress toward the future goal of coating ZnS substrates for abrasion resistance. C1 [Johnson, S. D.; Kub, F. J.; Eddy, C. R., Jr.] US Naval Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA. RP Johnson, SD (reprint author), US Naval Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA. EM scooter.johnson.ctr@nrl.navy.mil NR 19 TC 1 Z9 1 U1 2 U2 5 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9499-3 J9 PROC SPIE PY 2013 VL 8708 AR UNSP 87080T DI 10.1117/12.2029717 PG 12 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing; Optics SC Materials Science; Optics GA BGM25 UT WOS:000323491200016 ER PT S AU Garren, DA Scrofani, JW Tummala, M McEachen, JC AF Garren, David A. Scrofani, James W. Tummala, Murali McEachen, John C. BE Zelnio, E Garber, FD TI Target Migration Path Morphology of Moving Targets in Spotlight SAR SO ALGORITHMS FOR SYNTHETIC APERTURE RADAR IMAGERY XX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Algorithms for Synthetic Aperture Radar Imagery XX CY MAY 01-02, 2013 CL Baltimore, MD SP SPIE DE Synthetic aperture radar; Radar imaging; Radar theory; Radar tracking AB This paper examines the signature characteristics of moving targets in spotlight synthetic aperture radar (SAR) image data. This analysis considers the special case in which the radar sensor is assumed to move with constant speed and heading on a level flight path with broadside imaging geometry. It is shown that the resulting defocused smear signature in the spotlight SAR image exhibits range migration effects, as has been shown previously for stripmap SAR analysis. In particular, cases of uniform target motion exhibit simply curved range migration paths, whereas non-uniform target motion can cause complicated smear shapes. C1 [Garren, David A.; Scrofani, James W.] Naval Postgrad Sch, Dept Elect & Comp Engn, Arlington, VA 22203 USA. RP Garren, DA (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, 900 North Glebe Rd, Arlington, VA 22203 USA. EM dagarren@nps.edu NR 11 TC 0 Z9 0 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 978-0-8194-9537-2 J9 PROC SPIE PY 2013 VL 8746 AR UNSP 87460B DI 10.1117/12.2022410 PG 7 WC Optics; Telecommunications SC Optics; Telecommunications GA BGK66 UT WOS:000323341800010 ER PT S AU Vilcheck, MJ Moore, CI Mahon, R Murphy, J Bucholtz, A Burris, HR Thomas, LM Rabinovich, W AF Vilcheck, Michael J. Moore, Christopher I. Mahon, Rita Murphy, Jim Bucholtz, Anthony Burris, Harris R. Thomas, Linda M. Rabinovich, William BE Thomas, LMW Spillar, EJ TI Atmospheric transmission from an instrument measuring scatter at 1550 nm SO ATMOSPHERIC PROPAGATION X SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Atmospheric Propagation X CY APR 30-MAY 01, 2013 CL Baltimore, MD SP SPIE DE free space optical communication; lasercomm; atmospheric transmission; visibility; particulate scatter AB The Naval Research Laboratory (NRL) has extensively investigated atmospheric effects on maritime lasercomm in both long term research studies and short term system demonstrations. A current effort is underway in the ONR Tactical Line-of-Sight Optical Communications (TALON) program to better characterize atmospheric transmission at 1550 nm in multiple climates to enable prediction of communication link performance. In order to allow long term unmanned measurements in these multiple climates, NRL developed a scattering-based 1550 nm transmission sensor similar in function to commercial visible wavelength visibility monitors. After the system was built and calibrated, it was deployed to a number of sites with various climate types to collect data over a 1-month period for each site. This paper describes the development of the instrument and the software. It also presents some of the collected data. C1 [Vilcheck, Michael J.; Moore, Christopher I.; Mahon, Rita; Murphy, Jim; Bucholtz, Anthony; Burris, Harris R.; Thomas, Linda M.; Rabinovich, William] US Naval Res Lab, Washington, DC 20375 USA. RP Vilcheck, MJ (reprint author), US Naval Res Lab, Code 8123,4555 Overlook Ave SW, Washington, DC 20375 USA. NR 3 TC 0 Z9 0 U1 2 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 978-0-8194-9523-5 J9 PROC SPIE PY 2013 VL 8732 AR UNSP 873202 DI 10.1117/12.2019143 PG 8 WC Meteorology & Atmospheric Sciences; Optics SC Meteorology & Atmospheric Sciences; Optics GA BGK32 UT WOS:000323309200001 ER PT J AU Shupp, R Cadigan, J Schmitt, PM Swope, KJ AF Shupp, Robert Cadigan, John Schmitt, Pamela M. Swope, Kurtis J. TI Institutions and information in multilateral bargaining experiments SO B E JOURNAL OF ECONOMIC ANALYSIS & POLICY LA English DT Article DE land-assembly; multilateral bargaining; Rubenstein bargaining; asymmetric information ID ULTIMATUM GAMES; HOLDOUT PROBLEM; EMINENT DOMAIN; ANTICOMMONS; FAIRNESS; BEHAVIOR; PROPERTY; TRAGEDY AB This paper examines the behavior in multilateral bargaining experiments with alternating offers and asymmetric information. In all experiments, a single buyer has up to ten bargaining periods to purchase one unit of a good from each of two sellers. Treatments vary based on who makes the first offer (buyer or sellers), timing (consistent buyer-offer/sellers-demand or alternating), and information (buyer's value and sellers' costs are known or come from a uniform distribution). We find that actual bargaining outcomes are virtually identical when offers alternate, regardless of which player makes the first offer. We find that alternating offers reduce bargaining delay slightly compared to treatments in which one side or the other makes repeated take-it-or-leave-it offers. Finally, we find that incomplete information increases bargaining delay and the likelihood of failed agreements. C1 [Shupp, Robert] Michigan State Univ, E Lansing, MI 48824 USA. [Cadigan, John] Gettysburg Coll, Gettysburg, PA 17325 USA. [Schmitt, Pamela M.; Swope, Kurtis J.] US Naval Acad, Annapolis, MD USA. RP Shupp, R (reprint author), Michigan State Univ, E Lansing, MI 48824 USA. EM shupprob@msu.edu; jcadigan@gettysburg.edu; pschmitt@usna.edu; swope@usna.edu NR 44 TC 1 Z9 1 U1 1 U2 4 PU WALTER DE GRUYTER GMBH PI BERLIN PA GENTHINER STRASSE 13, D-10785 BERLIN, GERMANY SN 1935-1682 J9 BE J ECON ANAL POLI JI B E J. Econ. Anal. Policy PY 2013 VL 13 IS 1 BP 485 EP 523 DI 10.1515/bejeap-2012-0054 PG 39 WC Economics SC Business & Economics GA 204AP UT WOS:000323337100015 ER PT S AU Driggers, RG Hodgkin, V Vollmerhausen, R AF Driggers, Ronald G. Hodgkin, Van Vollmerhausen, Richard BE Holst, GC Krapels, KA TI What Good Is SWIR? Passive Day Comparison of VIS, NIR, and SWIR SO INFRARED IMAGING SYSTEMS: DESIGN, ANALYSIS, MODELING, AND TESTING XXIV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Infrared Imaging Systems - Design, Analysis, Modeling, and Testing XXIV CY APR 30-MAY 02, 2013 CL Baltimore, MD SP SPIE DE Infrared Detectors; Infrared System Performance AB This paper is the first of three papers associated with the military benefits of SWIR imaging. This paper describes the benefits associated with passive daytime operations with comparisons of SWIR, NIR, and VIS bands and sensors. This paper includes quantitative findings from previously published papers, analysis of open source data, summaries of various expert analyses, and calculations of notional system performance. We did not accept anecdotal findings as acceptable benefits. Topics include haze and fog penetration, atmospheric transmission, cloud and smoke penetration, target and background contrasts, spectral discrimination, turbulence degradation, and long range target identification. The second and third papers will address passive night imaging and active night imaging. C1 [Driggers, Ronald G.] Naval Res Lab, Code Opt Sci Div 5600, Washington, DC 20375 USA. RP Driggers, RG (reprint author), Naval Res Lab, Code Opt Sci Div 5600, 4555 Overlook Ave, Washington, DC 20375 USA. NR 15 TC 6 Z9 6 U1 0 U2 7 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9497-9 J9 PROC SPIE PY 2013 VL 8706 AR UNSP 87060L DI 10.1117/12.2016467 PG 15 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BGL88 UT WOS:000323445000018 ER PT S AU Kim, AM Olsen, RC Kruse, FA AF Kim, Angela M. Olsen, Richard C. Kruse, Fred A. BE Turner, MD Kamerman, GW TI Methods for LiDAR point cloud classification using local neighborhood statistics SO LASER RADAR TECHNOLOGY AND APPLICATIONS XVIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser Radar Technology and Applications XVIII CY APR 30-MAY 02, 2013 CL Baltimore, MD SP SPIE DE LiDAR; point cloud; classification; statistics; local neighborhood AB LiDAR data are available in a variety of publicly-accessible forums, providing high-resolution, accurate 3-dimensional information about objects at the Earth's surface. Automatic extraction of information from LiDAR point clouds, however, remains a challenging problem. The focus of this research is to develop methods for point cloud classification and object detection which can be customized for specific applications. The methods presented rely on analysis of statistics of local neighborhoods of LiDAR points. A multi-dimensional vector composed of these statistics can be classified using traditional data classification routines. Local neighborhood statistics are defined, and examples are given of the methods for specific applications such as building extract ion and vegetation classification. Results indicate the feasibility of the local neighborhood statistics approach and provide a framework for the design of customized classification or object detection routines for LiDAR point clouds. C1 [Kim, Angela M.] Naval Postgrad Sch, Remote Sensing Ctr, Monterey, CA USA. RP Kim, AM (reprint author), Naval Postgrad Sch, Remote Sensing Ctr, 833 Dyer Rd, Monterey, CA USA. EM amkim@nps.edu RI Olsen, Richard/O-2699-2015 OI Olsen, Richard/0000-0002-8344-9297 NR 9 TC 0 Z9 0 U1 4 U2 10 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9522-8 J9 PROC SPIE PY 2013 VL 8731 AR UNSP 873103 DI 10.1117/12.2015709 PG 10 WC Optics; Telecommunications SC Optics; Telecommunications GA BGK47 UT WOS:000323324800002 ER PT S AU Kim, W Baker, C Villalobos, G Florea, C Gibson, D Shaw, LB Bowman, S Bayya, S Sadowski, B Hunt, M Askins, C Peele, J Aggarwal, ID Sanghera, JS AF Kim, W. Baker, C. Villalobos, G. Florea, C. Gibson, D. Shaw, L. B. Bowman, S. Bayya, S. Sadowski, B. Hunt, M. Askins, C. Peele, J. Aggarwal, I. D. Sanghera, J. S. BE Dubinskii, M Post, SG TI Recent advancements in transparent ceramics and crystal fibers for high power lasers SO LASER TECHNOLOGY FOR DEFENSE AND SECURITY IX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser Technology for Defense and Security IX CY APR 30-MAY 01, 2013 CL Baltimore, MD SP SPIE DE Sesquioxides; Nano-powders; transparent ceramics; crystal fibers; core/clad fiber; Laser Heated Pedestal Growth AB In this paper, we present our recent progress in the development of rare-earth (Yb3+ or Ho3+) doped Lu2O3 and Y2O3 sesquioxides for high power solid state lasers. We have fabricated high quality transparent ceramics using nano-powders synthesized by a co-precipitation method. This was accomplished by developments in high purity powder synthesis and low temperature scalable sintering technology developed at NRL. The optical, spectral and morphological properties as well as the lasing performance from our highly transparent ceramics are presented. In the second part of the paper, we discuss our recent research effort in developing cladded-single crystal fibers for high power single frequency fiber lasers has the potential to significantly exceed the capabilities of existing silica fiber based lasers. Single crystal fiber cores with diameters as small as 35 mu m have been drawn using high purity rare earth doped ceramic or single crystal feed rods by the Laser Heated Pedestal Growth (LHPG) process. Our recent results on the development of suitable claddings on the crystal fiber core are discussed. C1 [Kim, W.; Baker, C.; Villalobos, G.; Gibson, D.; Shaw, L. B.; Bowman, S.; Bayya, S.; Askins, C.; Sanghera, J. S.] Naval Res Lab, Washington, DC USA. RP Kim, W (reprint author), Naval Res Lab, Code 5620, Washington, DC USA. RI Baker, Colin/I-6657-2015 NR 11 TC 2 Z9 2 U1 0 U2 10 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9524-2 J9 PROC SPIE PY 2013 VL 8733 AR UNSP 87330V DI 10.1117/12.2018421 PG 6 WC Optics; Physics, Applied SC Optics; Physics GA BGK51 UT WOS:000323328800020 ER PT S AU Merritt, CD Bewley, WW Canedy, CL Kim, M Kim, CS Abell, J Vurgaftman, I Meyer, JR AF Merritt, C. D. Bewley, W. W. Canedy, C. L. Kim, M. Kim, C. S. Abell, J. Vurgaftman, I. Meyer, J. R. BE Dubinskii, M Post, SG TI Interband Cascade Lasers with High Continuous-Wave Output Powers at Room Temperature SO LASER TECHNOLOGY FOR DEFENSE AND SECURITY IX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser Technology for Defense and Security IX CY APR 30-MAY 01, 2013 CL Baltimore, MD SP SPIE DE Output power; interband cascade laser; mid-infrared; threshold power density; internal loss; high-power operation AB We discuss approaches to increasing the cw output power of the interband cascade lasers (ICLs) for the midwave infrared spectral region. While most of the attention to date has been focused on reducing the operating power of the ICL, the optimization for maximum output power proceeds in a different direction. We find that increasing the number of stage is beneficial, in that it boosts the slope efficiency with only a modest penalty due to higher threshold power density and extra heating. The critical figure of merit for realizing high-power ICLs is the internal loss, which can be estimated from the external differential quantum efficiency (EDQE) per stage. The internal loss can be controlled by varying the thickness of the low-doped GaSb separate-confinement layers (SCLs). We demonstrate room-temperature EDQEs approaching 45% for broad-area 7-stage ICLs with 800-nm-thick SCLs. C1 [Merritt, C. D.; Bewley, W. W.; Canedy, C. L.; Kim, C. S.; Abell, J.; Vurgaftman, I.; Meyer, J. R.] Naval Res Lab, Washington, DC 20375 USA. RP Meyer, JR (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM MWIR_lasers@nrl.navy.mil NR 8 TC 0 Z9 0 U1 1 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 978-0-8194-9524-2 J9 PROC SPIE PY 2013 VL 8733 AR UNSP 87330B DI 10.1117/12.2015408 PG 6 WC Optics; Physics, Applied SC Optics; Physics GA BGK51 UT WOS:000323328800009 ER PT J AU Cameron, J Pitts, DR Zarikian, V AF Cameron, Jan Pitts, David R. Zarikian, Vrej TI Bimodules over Cartan MASAs in von Neumann algebras, norming algebras, and Mercer's Theorem SO NEW YORK JOURNAL OF MATHEMATICS LA English DT Article DE Norming algebra; Cartan MASA; C*-diagonal ID OPERATOR-ALGEBRAS; SUBALGEBRAS; ISOMORPHISMS; COHOMOLOGY AB In a 1991 paper, R. Mercer asserted that a Cartan bimodule isomorphism between Cartan bimodule algebras A(1) and A(2) extends uniquely to a normal *-isomorphism of the von Neumann algebras generated by A(1) and A(2) (Corollary 4.3 of Mercer, 1991). Mercer's argument relied upon the Spectral Theorem for Bimodules of Muhly, Saito and Solel, 1988 (Theorem 2.5, there). Unfortunately, the arguments in the literature supporting their Theorem 2.5 contain gaps, and hence Mercer's proof is incomplete. In this paper, we use the outline in Pitts, 2008, Remark 2.17, to give a proof of Mercer's Theorem under the additional hypothesis that the given Cartan bimodule isomorphism is sigma-weakly continuous. Unlike the arguments contained in the above mentioned papers of Mercer and Muhly-Saito-Solel, we avoid the use of the machinery in Feldman-Moore, 1977; as a consequence, our proof does not require the von Neumann algebras generated by the algebras A(i) to have separable preduals. This point of view also yields some insights on the von Neumann subalgebras of a Cartan pair (M, D), for instance, a strengthening of a result of Aoi, 2003. We also examine the relationship between various topologies on a von Neumann algebra M with a Cartan MASA D. This provides the necessary tools to parameterize the family of Bures-closed bimodules over a Cartan MASA in terms of projections in a certain abelian von Neumann algebra; this result may be viewed as a weaker form of the Spectral Theorem for Bimodules, and is a key ingredient in the proof of our version of Mercer's Theorem. Our results lead to a notion of spectral synthesis for sigma-weakly closed bimodules appropriate to our context, and we show that any von Neumann subalgebra of M which contains D is synthetic. We observe that a result of Sinclair and Smith shows that any Cartan MASA in a von Neumann algebra is norming in the sense of Pop, Sinclair and Smith. C1 [Cameron, Jan] Vassar Coll, Dept Math, Poughkeepsie, NY 12604 USA. [Pitts, David R.] Univ Nebraska, Dept Math, Lincoln, NE 68588 USA. [Zarikian, Vrej] US Naval Acad, Dept Math, Annapolis, MD 21402 USA. RP Cameron, J (reprint author), Vassar Coll, Dept Math, Poughkeepsie, NY 12604 USA. EM jacameron@vassar.edu; dpitts2@math.unl.edu; zarikian@usna.edu FU Nebraska IMMERSE FX Zarikian was partially supported by Nebraska IMMERSE. NR 22 TC 4 Z9 4 U1 0 U2 1 PU ELECTRONIC JOURNALS PROJECT PI ALBANY PA UNIV ALBANY, DEPT MATHEMATICS & SCIENCE, ALBANY, NY 12222 USA SN 1076-9803 J9 NEW YORK J MATH JI N. Y. J. Math. PY 2013 VL 19 BP 455 EP 486 PG 32 WC Mathematics SC Mathematics GA 206RR UT WOS:000323540300002 ER PT J AU Martinez, JI Abad, E Calle-Vallejo, F Krowne, CM Alonso, JA AF Martinez, J. I. Abad, E. Calle-Vallejo, F. Krowne, C. M. Alonso, J. A. TI Tailoring structural and electronic properties of RuO2 nanotubes: a many-body approach and electronic transport SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID DENSITY-FUNCTIONAL THEORY; TUNNELING CURRENT; BAND-GAPS; SURFACES; OXIDES; METAL; PSEUDOPOTENTIALS; SEMICONDUCTORS; TRANSMISSION; INSULATORS AB The electrical conduction properties of ruthenium oxide nanocables are of high interest. These cables can be built as thin shells of RuO2 surrounding an inner solid nanowire of a dielectric insulating silica material. With this motivation we have investigated the structural, electronic and transport properties of RuO2 nanotubes using the density functional formalism, and applying many-body corrections to the electronic band structure. The structures obtained for the thinnest nanotubes are of the rutile type. The structures of nanotubes with larger diameters deviate from the rutile structure and have in common the formation of dimerized Ru-Ru rows along the axial direction. The cohesive energy shows an oscillating behavior as a function of the tube diameter. With the exception of the thinnest nanotubes, there is a correlation such that the electronic band structures of tubes with high cohesive energies show small gaps at the Fermi energy, whereas the less stable nanotubes exhibit metallic behavior, with bands crossing the Fermi surface. The electronic conductance of nanotubes of finite length connected to gold electrodes has been calculated using a Green-function formalism, and correlations have been established between the electronic band structure and the conductance at zero bias. C1 [Martinez, J. I.] CSIC, Inst Ciencia Mat Madrid, Dept Superficies & Recubrimientos, ES-28049 Madrid, Spain. [Martinez, J. I.; Abad, E.] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, ES-28049 Madrid, Spain. [Abad, E.] Univ Stuttgart, Inst Theoret Chem, D-70569 Stuttgart, Germany. [Calle-Vallejo, F.] Leiden Univ, Leiden Inst Chem, NL-2300 RA Leiden, Netherlands. [Krowne, C. M.] Naval Res Lab, Microwave Technol Branch, Elect Sci & Technol Div, Washington, DC 20375 USA. [Alonso, J. A.] Univ Valladolid, Fac Ciencias, Dept Fis Teor Atom & Opt, ES-47011 Valladolid, Spain. RP Martinez, JI (reprint author), CSIC, Inst Ciencia Mat Madrid, Dept Superficies & Recubrimientos, ES-28049 Madrid, Spain. EM joseignacio.martinez@icmm.csic.es RI Abad, Enrique/A-1201-2012; Martinez, Jose/H-2645-2012; Alonso, Jose Antonio/A-5245-2011; Yambo, MBPT Code/O-4564-2015; Alonso, Julio /D-5781-2016 OI Abad, Enrique/0000-0002-4214-7874; Martinez, Jose/0000-0002-2086-8603; Alonso, Jose Antonio/0000-0001-5329-1225; Alonso, Julio /0000-0002-8604-8608 FU Spanish MICIIN [MAT2011-22781, FIS2010-16046]; CAM [S2009/MAT-1467]; Junta de Castilla y Leon [VA158A11-2]; European Project MINOTOR [FP7-NMP-228424]; Spanish MICIIN; CSIC FX This work was supported by Spanish MICIIN (grants MAT2011-22781 and FIS2010-16046), CAM (grant S2009/MAT-1467), Junta de Castilla y Leon (grant VA158A11-2) and the European Project MINOTOR (grant FP7-NMP-228424). J.I.M. acknowledges funding from Spanish MICIIN and CSIC through "Juan de la Cierva'' and "JaeDoc'' Programs, respectively. The work of C.M.K. was conducted under the aegis of the NRL NanoScience Institute (NSI), project "Nanoparticulate Ruthenium Dioxide Shells on Dielectric Cores: Basic ElectroChemistry, Physics, and Material Science of a Single-Unit-Thick Electron Conductor and the Implications for Energy and Electro-Optical Applications''. NR 43 TC 3 Z9 3 U1 0 U2 31 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2013 VL 15 IS 35 BP 14715 EP 14722 DI 10.1039/c3cp52092g PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 202EQ UT WOS:000323196800019 PM 23900202 ER PT S AU Smith, JF AF Smith, James F., III BE Donkor, E Pirich, AR Brandt, HE TI Hyper-entanglement based system with enhanced resolution, signal to noise ratio, and measurement time SO QUANTUM INFORMATION AND COMPUTATION XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Quantum Information and Computation XI CY MAY 02-03, 2013 CL Baltimore, MD SP SPIE DE Quantum entanglement; quantum hyper-entanglement; super resolution; super sensitivity; quantum imaging; quantum Fisher information; quantum Cramer-Rao lower bound; quantum Chernoff bound; quantum sensing; quantum state engineering AB A hyper-entanglement based atmospheric imaging/detection system involving only a signal and an ancilla photon will be considered for optical and infrared frequencies. Only the signal photon will propagate in the atmosphere and its loss will be classical. The ancilla photon will remain within the sensor experiencing low loss. Closed form expressions for the wave function, normalization, density operator, reduced density operator, symmetrized logarithmic derivative, quantum Fisher information, quantum Cramer-Rao lower bound, coincidence probabilities, probability of detection, probability of false alarm, probability of error after M measurements, signal to noise ratio, quantum Chernoff bound, time-on-target expressions related to probability of error and resolution will be provided. The effect of noise in every mode will be included as well as loss. The system will provide the basic design for an imaging/detection systems functioning at optical or infrared frequencies that offer better than classical angular and range resolution. Optimization for enhanced resolution will be included. The signal to noise ratio will be increased by a factor equal to the number of modes employed during the hyper-entanglement process. Likewise, the measurement time can be reduced by the same factor. The hyper-entanglement generator will typically make use of entanglement in polarization, energy-time, orbital angular momentum, etc. Mathematical results will be provided describing the system's performance as a function of loss mechanisms and noise. C1 Naval Res Lab, Washington, DC 20375 USA. RP Smith, JF (reprint author), Naval Res Lab, Code 5741, Washington, DC 20375 USA. EM james.smith@nrl.navy.mil NR 17 TC 0 Z9 0 U1 1 U2 13 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9540-2 J9 PROC SPIE PY 2013 VL 8749 AR UNSP 87490Y DI 10.1117/12.2015333 PG 19 WC Computer Science, Interdisciplinary Applications; Optics SC Computer Science; Optics GA BGK64 UT WOS:000323339700023 ER PT J AU Krasowski, MJ Prokop, NF Flatico, JM Greer, LC Jenkins, PP Neudeck, PG Chen, LY Spina, DC AF Krasowski, Michael J. Prokop, Norman F. Flatico, Joseph M. Greer, Lawrence C. Jenkins, Phillip P. Neudeck, Philip G. Chen, Liangyu Spina, Danny C. TI CIB: An Improved Communication Architecture for Real-Time Monitoring of Aerospace Materials, Instruments, and Sensors on the ISS SO SCIENTIFIC WORLD JOURNAL LA English DT Article AB The Communications Interface Board (CIB) is an improved communications architecture that was demonstrated on the International Space Station (ISS). ISS communication interfaces allowing for real-time telemetry and health monitoring require a significant amount of development. The CIB simplifies the communications interface to the ISS for real-time health monitoring, telemetry, and control of resident sensors or experiments. With a simpler interface available to the telemetry bus, more sensors or experiments may be flown. The CIB accomplishes this by acting as a bridge between the ISS MIL-STD-1553 low-rate telemetry (LRT) bus and the sensors allowing for two-way command and telemetry data transfer. The CIB was designed to be highly reliable and radiation hard for an extended flight in low Earth orbit (LEO) and has been proven with over 40 months of flight operation on the outside of ISS supporting two sets of flight experiments. Since the CIB is currently operating in flight on the ISS, recent results of operations will be provided. Additionally, as a vehicle health monitoring enabling technology, an overview and results from two experiments enabled by the CIB will be provided. Future applications for vehicle health monitoring utilizing the CIB architecture will also be discussed. C1 [Krasowski, Michael J.; Prokop, Norman F.; Greer, Lawrence C.; Neudeck, Philip G.] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA. [Flatico, Joseph M.; Chen, Liangyu] NASA, Ohio Aerosp Inst, Glenn Res Ctr, Cleveland, OH 44135 USA. [Jenkins, Phillip P.] US Naval Res Lab, Washington, DC 20375 USA. [Spina, Danny C.] NASA, Jacobs Technol, Glenn Res Ctr, Cleveland, OH 44135 USA. RP Prokop, NF (reprint author), NASA, Glenn Res Ctr, 21000 Brookpk Rd, Cleveland, OH 44135 USA. EM norman.f.prokop@nasa.gov FU NDE Branch at the NASA Glenn Research Center; U.S. Naval Research Laboratory FX The authors would like to acknowledge George Y. Baaklini, branch chief of the Optical Instrumentation and NDE Branch at the NASA Glenn Research Center, and Robert Walters of the Naval Research Laboratory for support of this work. This work was funded by the U.S. Naval Research Laboratory. NR 25 TC 0 Z9 0 U1 3 U2 5 PU HINDAWI PUBLISHING CORPORATION PI NEW YORK PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA SN 1537-744X J9 SCI WORLD J JI Sci. World J. PY 2013 AR 185769 DI 10.1155/2013/185769 PG 12 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 199DA UT WOS:000322973500001 ER PT S AU Gemmill, KB Muttenthaler, M Delehanty, J Deschamps, J Susumu, K Stewart, M Dawson, P Huston, A Medintz, I AF Gemmill, Kelly Boeneman Muttenthaler, Markus Delehanty, James Deschamps, Jeff Susumu, Kimihiro Stewart, Michael Dawson, Philip Huston, Alan Medintz, Igor BE Southern, SO TI Peptide-mediated cellular delivery of semiconductor quantum dots SO SENSING TECHNOLOGIES FOR GLOBAL HEALTH, MILITARY MEDICINE, AND ENVIRONMENTAL MONITORING III SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Sensing Technologies for Global Health, Military Medicine, and Environmental Monitoring III CY APR 29-MAY 01, 2013 CL Baltimore, MD SP SPIE DE Quantum dots; Peptide; Imaging; Nanoparticle; Fluorescent ID INTRACELLULAR DELIVERY; NANOPARTICLES; DOMAIN; CELLS AB CdSe/ZnS semiconductor quantum dots (QDs) are ideal materials for biological sensing and cellular imaging applications due to their superior photophysical properties in comparison to fluorescent proteins or dyes and their ease of conjugation to biological materials. We have previously developed a number of in vitro FRET based biosensors in the laboratory for detection of proteases and biological and chemical agents. We would like to expand these biosensing capabilities into cellular systems, requiring development of QD cellular delivery techniques. Peptide-mediated cellular delivery of QDs is ideal as peptides are small, easily conjugated to QDs, easily manipulated and synthesized, and can be designed with "handles" for further chemical conjugation with other cargo. Here we discuss four cell delivery peptides that facilitate QD uptake in live cells. Understanding these peptides will help us design better nanoparticle cellular delivery systems and advance our capabilities for in vivo biosensing. C1 [Gemmill, Kelly Boeneman; Delehanty, James; Deschamps, Jeff; Medintz, Igor] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. RP Gemmill, KB (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. RI Muttenthaler, Markus/B-4944-2017 OI Muttenthaler, Markus/0000-0003-1996-4646 NR 18 TC 0 Z9 0 U1 0 U2 7 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9514-3 J9 PROC SPIE PY 2013 VL 8723 AR UNSP 872311 DI 10.1117/12.2015446 PG 6 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BGL64 UT WOS:000323425300015 ER PT S AU Goldman, ER Anderson, GP Brozozog-Lee, PA Zabetakis, D AF Goldman, Ellen R. Anderson, George P. Brozozog-Lee, P. Audrey Zabetakis, Dan BE Southern, SO TI SdAb heterodimer formation using leucine zippers SO SENSING TECHNOLOGIES FOR GLOBAL HEALTH, MILITARY MEDICINE, AND ENVIRONMENTAL MONITORING III SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Sensing Technologies for Global Health, Military Medicine, and Environmental Monitoring III CY APR 29-MAY 01, 2013 CL Baltimore, MD SP SPIE DE single domain antibodies; circular dichroism; surface plasmon resonance; ricin; thermal stability ID SINGLE-DOMAIN ANTIBODIES; HEAVY-CHAIN ANTIBODIES; FRAGMENTS; SELECTION; PHAGE AB Single domain antibodies (sdAb) are variable domains cloned from camel, llama, or shark heavy chain only antibodies, and are among the smallest known naturally derived antigen binding fragments. SdAb derived from immunized llamas are able to bind antigens with high affinity, and most are capable of refolding after heat or chemical denaturation to bind antigen again. We hypothesized that the ability to produce heterodimeric sdAb would enable reagents with the robust characteristics of component sdAb, but with dramatically improved overall affinity through increased avidity. Previously we had constructed multimeric sdAb by genetically linking sdAb that bind non-overlapping epitopes on the toxin, ricin. In this work we explored a more flexible approach; the construction of multivalent binding reagents using multimerization domains. We expressed anti-ricin sdAb that recognize different epitopes on the toxin as fusions with differently charged leucine zippers. When the initially produced homodimers are mixed the leucine zipper domains will pair to produce heterodimers. We used fluorescence resonance energy transfer to confirm heterodimer formation. Surface plasmon resonance, circular dichroism, enzyme linked immunosorbent assays, and fluid array assays were used to characterize the multimer constructs, and evaluate their utility in toxin detection. C1 [Goldman, Ellen R.; Anderson, George P.; Zabetakis, Dan] Ctr Bio Mol Sci & Engn, Naval Res Lab, Washington, DC 20375 USA. RP Goldman, ER (reprint author), Ctr Bio Mol Sci & Engn, Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RI Anderson, George/D-2461-2011; OI Anderson, George/0000-0001-7545-9893; LEE, PAMELA/0000-0002-9341-0759 NR 20 TC 1 Z9 1 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 978-0-8194-9514-3 J9 PROC SPIE PY 2013 VL 8723 AR UNSP 872313 DI 10.1117/12.2016145 PG 9 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BGL64 UT WOS:000323425300016 ER PT S AU Vurgaftman, I Bashkansky, M AF Vurgaftman, Igor Bashkansky, Mark BE Hasan, ZU Hemmer, PR Lee, H Santori, CM TI Optimal detuning for writing warm-atomic-vapor quantum memory in the presence of collisional fluorescence and four-wave mixing SO ADVANCES IN PHOTONICS OF QUANTUM COMPUTING, MEMORY, AND COMMUNICATION VI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Advances in Photonics of Quantum Computing, Memory, and Communication VI CY FEB 04-07, 2013 CL San Francisco, CA SP SPIE DE Quantum memory; Warm atomic vapor; Buffer gas; Rubidium ID ELECTROMAGNETICALLY INDUCED TRANSPARENCY; LINEAR OPTICS; ENSEMBLES AB Atomic vapor cells with buffer gas have a number of advantages when employed as quantum memory blocks based on the DLCZ (Duan-Lukin-Cirac-Zoller) protocol: operation slightly above room temperature, ease of handling, as well as commercial availability. Nevertheless, the signal-to-noise ratio in the current implementations is severely limited by the simultaneous presence of collisional fluorescence and the four-wave mixing noise. In our previous work, we have shown how to minimize the influence of the former on the writing process and provided an unambiguous demonstration of quantum memory lasting for 4 mu s. An elegant approach to suppress the four-wave-mixing noise by pre-pumping to the state with the hyperfine sublevel with the maximum value was proposed by Walther et al., Int. J. Quantum Inform. 5, 51 (2007). Here we show that this approach is fundamentally limited by the cancellation of the Raman matrix elements involving the F' = 1 and F' = 2 levels, which occurs for all experimental conditions in the S -> P transitions of all alkali atoms. A detuning that maximizes the signal-to-noise ratio is shown to exist for a given detector dark-count rate. C1 [Vurgaftman, Igor; Bashkansky, Mark] Naval Res Lab, Washington, DC 20375 USA. RP Vurgaftman, I (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM MWIR_lasers@nrl.navy.mil NR 17 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 978-0-8194-9404-7 J9 PROC SPIE PY 2013 VL 8635 AR 86350Q DI 10.1117/12.2004239 PG 11 WC Optics; Physics, Multidisciplinary SC Optics; Physics GA BGH35 UT WOS:000322965700011 ER PT J AU Finlay, JA Schultz, MP Cone, G Callow, ME Callow, JA AF Finlay, John A. Schultz, Michael P. Cone, Gemma Callow, Maureen E. Callow, James A. TI A novel biofilm channel for evaluating the adhesion of diatoms to non-biocidal coatings SO BIOFOULING LA English DT Article DE diatom biofilms; adhesion; fouling-release; zwitterionic coatings; polydimethylsiloxane; Navicula incerta ID MIXED-SPECIES BIOFILMS; ANTIFOULING COATINGS; MARINE BIOFILMS; SETTLEMENT; SURFACES; ZOOSPORES; SILICONE; FLOW; BACILLARIOPHYCEAE; ENTEROMORPHA AB Laboratory assessment of the adhesion of diatoms to non-toxic fouling-release coatings has tended to focus on single cells rather than the more complex state of a biofilm. A novel culture system based on open channel flow with adjustable bed shear stress values (0-2.4 Pa) has been used to produce biofilms of Navicula incerta. Biofilm development on glass and polydimethylsiloxane elastomer (PDMSe) showed a biphasic relationship with bed shear stress, which was characterised by regions of biofilm stability and instability reflecting cohesion between cells relative to the adhesion to the substratum. On glass, a critical shear stress of 1.3-1.4 Pa prevented biofilm development, whereas on PDMS, biofilms continued to grow at 2.4 Pa. Studies of diatom biofilms cultured on zwitterionic coatings using a bed shear stress of 0.54 Pa showed lower biomass production and adhesion strength on poly(sulfobetaine methacrylate) compared to poly (carboxybetaine methacrylate). The dynamic biofilm approach provides additional information to supplement short duration laboratory evaluations. C1 [Finlay, John A.; Cone, Gemma; Callow, Maureen E.; Callow, James A.] Univ Birmingham, Sch Biosci, Birmingham, W Midlands, England. [Schultz, Michael P.] US Naval Acad, Dept Naval Architecture & Ocean Engn, Annapolis, MD USA. RP Finlay, JA (reprint author), Univ Birmingham, Sch Biosci, Birmingham, W Midlands, England. EM j.a.finlay@bham.ac.uk RI Schultz, Michael/C-3670-2008 FU Office of Naval Research [N00014-08-1-0010] FX This research was supported by the Office of Naval Research grant N00014-08-1-0010. The PDMSe surfaces (glass slides coated with Silastic (R)-T2) were provided by Professor A. B. Brennan of the University of Florida. SBMA and CBMA zwitterionic films were supplied by Professor S. Jiang of the University of Washington. NR 45 TC 14 Z9 15 U1 1 U2 38 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0892-7014 J9 BIOFOULING JI Biofouling PY 2013 VL 29 IS 4 BP 401 EP 411 DI 10.1080/08927014.2013.777046 PG 11 WC Biotechnology & Applied Microbiology; Marine & Freshwater Biology SC Biotechnology & Applied Microbiology; Marine & Freshwater Biology GA 185FS UT WOS:000321952300004 PM 23574353 ER PT J AU Delehanty, JB Blanco-Canosa, JB Bradburne, CE Susumu, K Stewart, MH Prasuhn, DE Dawson, PE Medintz, IL AF Delehanty, James B. Blanco-Canosa, Juan B. Bradburne, Christopher E. Susumu, Kimihiro Stewart, Michael H. Prasuhn, Duane E. Dawson, Philip E. Medintz, Igor L. TI Site-specific cellular delivery of quantum dots with chemoselectively-assembled modular peptides SO CHEMICAL COMMUNICATIONS LA English DT Article ID PENETRATING PEPTIDES; NANOPARTICLES; CELLS AB Modular peptides displaying both quantum dot bioconjugation motifs and specific subcellular targeting domains were constructed using a chemoselective aniline-catalyzed hydrazone coupling chemistry. Peptides were ratiometrically assembled onto quantum dots to facilitate their specific delivery to either the plasma membrane, endosomes, the cytosol or the mitochondria of target cells. C1 [Delehanty, James B.; Bradburne, Christopher E.; Prasuhn, Duane E.; Medintz, Igor L.] Ctr Bio Mol Sci & Engn, Washington, DC USA. [Susumu, Kimihiro; Stewart, Michael H.] US Naval Res Lab, Div Opt Sci, Washington, DC 20375 USA. [Blanco-Canosa, Juan B.; Dawson, Philip E.] Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA. [Blanco-Canosa, Juan B.; Dawson, Philip E.] Scripps Res Inst, Dept Chem, La Jolla, CA 92037 USA. [Susumu, Kimihiro] Sotera Def Solut, Annapolis Jct, MD 20701 USA. RP Delehanty, JB (reprint author), Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC USA. EM James.delehanty@nrl.navy.mil; igor.medintz@nrl.navy.mil FU DARPA; NRL; NSI; DTRA JSTO MIPR [B112582M] FX We acknowledge financial support from DARPA, NRL NSI, and DTRA JSTO MIPR # B112582M. NR 27 TC 17 Z9 17 U1 0 U2 44 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1359-7345 J9 CHEM COMMUN JI Chem. Commun. PY 2013 VL 49 IS 72 BP 7878 EP 7880 DI 10.1039/c3cc42781a PG 3 WC Chemistry, Multidisciplinary SC Chemistry GA 201BM UT WOS:000323115700002 PM 23759873 ER PT J AU Garsany, Y Epshteyn, A More, KL Swider-Lyons, KE AF Garsany, Yannick Epshteyn, Albert More, Karren L. Swider-Lyons, Karen E. TI Oxygen Electroreduction on Nanoscale Pt/[TaOPO4/VC] and Pt/[Ta2O5/VC] in Alkaline Electrolyte SO ECS ELECTROCHEMISTRY LETTERS LA English DT Article ID ROTATING-DISC ELECTRODE; TANTALUM OXYPHOSPHATE; PLATINUM-ELECTRODES; REDUCTION ACTIVITY; ELECTROCATALYSIS; CATALYSTS; NANOPARTICLES; SURFACES; CARBON; MEDIA AB The ORR on Pt in an alkaline electrolyte is studied for the impact of support effects. Platinum nanoparticles are supported on nanoscale tantalum oxyphosphate or tantalum oxide films on Vulcan carbon (VC) to make either Pt/[TaOPO4/VC] or Pt/[Ta2O5/VC] electrocatalysts, which were then characterized with BF-STEM. Their ORR activity was determined by RDE methodology in 0.10 M KOH electrolyte. The Pt mass activities of the Pt/[TaOPO4/VC] and Pt/[Ta2O5/VC] electrocatalysts are both approximately 250 mA mg(Pt)(-1) at 0.925 V, or about 2 x greater than that of a commercial Pt/VC electrocatalyst (120 mA mg(Pt)(-1)), implying a substantial effect of the Ta-based support films. (c) 2013 The Electrochemical Society. All rights reserved. C1 [Garsany, Yannick] Excet Inc, Springfield, VA 22151 USA. [Garsany, Yannick; Epshteyn, Albert; Swider-Lyons, Karen E.] US Naval Res Lab, Washington, DC 20375 USA. [More, Karren L.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Garsany, Y (reprint author), Excet Inc, Springfield, VA 22151 USA. EM yannick.garsany.ctr.fr@nrl.navy.mil RI More, Karren/A-8097-2016 OI More, Karren/0000-0001-5223-9097 FU Office of Naval Research; Oak Ridge National Laboratory's Shared Research Equipment (ShaRE) User Facility; Office of Basic Energy Sciences, the U.S. Department of Energy FX The authors are grateful to the Office of Naval Research for financial support of this project. Electron microscopy was supported by Oak Ridge National Laboratory's Shared Research Equipment (ShaRE) User Facility, which is sponsored by the Office of Basic Energy Sciences, the U.S. Department of Energy. NR 20 TC 2 Z9 2 U1 3 U2 12 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 2162-8726 J9 ECS ELECTROCHEM LETT JI ECS Electrochem. Lett. PY 2013 VL 2 IS 10 BP H46 EP H50 DI 10.1149/2.012310eel PG 5 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 199JW UT WOS:000322991800012 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI Lines or Circles: The Basics of Systems Thinking SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 3 EP 26 PG 24 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500003 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI Financial Whirlpools A Systems Story of the Great Global Recession Preface SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Editorial Material; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP XIII EP + PG 29 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500001 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI As the Gears Turn: Policies, Practices, Markets, and Risk SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 27 EP 54 PG 28 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500004 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI Systems Thinking and the Great Global Recession Introduction SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Editorial Material; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP XXVII EP XXXVIII PG 12 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500002 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI Where Can I Buy One? Humans and the Economy SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 57 EP 65 PG 9 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500005 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI Who Are You Anyway? Values, Beliefs, Norms, and Behaviors SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 67 EP 88 PG 22 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500006 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI Visions of Grandeur: Expectations and Behaviors SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 89 EP 108 PG 20 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500007 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI A Crisis of Human Proportions: Ethics and Behaviors SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 109 EP 129 PG 21 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500008 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI Self Speaks Loudly and Carries a Big Stick: Sources of Unethical Behavior SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 131 EP 155 PG 25 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500009 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI What Goes Up Must Come Down: The Housing Bubble SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 159 EP 185 PG 27 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500010 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI On Top of Debt Mountain: High-Risk Loans and Credit SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 187 EP 217 PG 31 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500011 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI The Risk Tiger Pounces: Financial Market, Risk, and Securitization SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 219 EP 245 PG 27 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500012 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI Human Roots Are Deep: Yin Meets Yang SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 249 EP 273 PG 25 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500013 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI It's a Small World After All: Global Implications and the Road Ahead SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 275 EP 306 PG 32 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500014 ER PT B AU Higgins, KL AF Higgins, Karen L. BA Higgins, KL BF Higgins, KL TI Financial Whirlpools A Systems Story of the Great Global Recession SO FINANCIAL WHIRLPOOLS: A SYSTEMS STORY OF THE GREAT GLOBAL RECESSION LA English DT Article; Book Chapter C1 [Higgins, Karen L.] Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. [Higgins, Karen L.] Naval Air Warfare Ctr, Weap Div, China Lake, CA USA. RP Higgins, KL (reprint author), Claremont Grad Univ, Peter F Drucker & Masatoshi Ito Grad Sch Manageme, Claremont, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA BN 978-0-12-405921-4; 978-0-12-405905-4 PY 2013 BP 307 EP 317 PG 11 WC Business, Finance; Management SC Business & Economics GA BGD79 UT WOS:000322486500015 ER PT S AU Nelson, C Avramov-Zamurovic, S Korotkova, O Malek-Madani, R Sova, R Davidson, F AF Nelson, C. Avramov-Zamurovic, S. Korotkova, O. Malek-Madani, R. Sova, R. Davidson, F. BE Hemmati, H Boroson, DM TI Measurements of partially spatially coherent laser beam intensity fluctuations propagating through a hot-air turbulence emulator and comparison with both terrestrial and maritime environments SO FREE-SPACE LASER COMMUNICATION AND ATMOSPHERIC PROPAGATION XXV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication and Atmospheric Propagation XXV CY FEB 05-07, 2013 CL San Francisco, CA SP SPIE DE Free-space optical communications; atmospheric turbulence; hot-air turbulence emulator; partial spatial coherence; maritime ID MODEL AB Measurements of partially spatially coherent infra-red laser beam intensity fluctuations propagating through a hot-air turbulence emulator are compared with visible laser beam intensity fluctuations in the maritime and IR laser beam intensity fluctuations in the terrestrial environment at the United States Naval Academy. The emulator used in the laboratory for the comparison is capable of generating controlled optical clear air turbulence ranging from weak to strong scintillation. Control of the degree of spatial coherence of the propagating laser beam was accomplished using both infrared and visible spatial light modulators. Specific statistical analysis compares the probability density and temporal autocovariance functions, and fade statistics of the propagating laser beam between the in-laboratory emulation and the maritime field experiment. Additionally, the scintillation index across varying degrees of spatial coherence is compared for both the maritime and terrestrial field experiments as well as the in-laboratory emulation. The possibility of a scintillation index 'sweet' spot is explored. C1 [Nelson, C.; Avramov-Zamurovic, S.; Malek-Madani, R.] US Naval Acad, Annapolis, MD 21402 USA. RP Nelson, C (reprint author), US Naval Acad, 121 Blake Rd, Annapolis, MD 21402 USA. EM cnelson@usna.edu NR 16 TC 2 Z9 2 U1 1 U2 5 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9379-8 J9 PROC SPIE PY 2013 VL 8610 AR UNSP 86100T DI 10.1117/12.2003307 PG 12 WC Meteorology & Atmospheric Sciences; Optics; Physics, Applied SC Meteorology & Atmospheric Sciences; Optics; Physics GA BGG94 UT WOS:000322907100021 ER PT S AU Wilcox, CC Santiago, F Restaino, SR Judd, KP Martinez, T Andrews, JR AF Wilcox, Christopher C. Santiago, Freddie Restaino, Sergio R. Judd, Kyle P. Martinez, Ty Andrews, Jonathan R. BE Hemmati, H Boroson, DM TI Determining Seeing Conditions of a Horizontal Turbulent Optical Path with Video Image Analysis SO FREE-SPACE LASER COMMUNICATION AND ATMOSPHERIC PROPAGATION XXV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication and Atmospheric Propagation XXV CY FEB 05-07, 2013 CL San Francisco, CA SP SPIE AB The turbulent effects from the Earth's atmosphere degrade the performance of any optical system within it. There have been numerous studies in the effects of atmospheric turbulence on an imaging system that is pointed vertically to the sky looking at distant objects and the seeing conditions associated with it. We investigate the calculation of the seeing conditions with an imaging system pointed horizontally in terrestrial and maritime environments. We have acquired video data of different horizontal paths in the infrared wavelengths and performed data analysis that will be the basis of new characterizations and modeling of horizontal path atmospheric turbulence. C1 [Wilcox, Christopher C.; Restaino, Sergio R.; Judd, Kyle P.; Martinez, Ty; Andrews, Jonathan R.] US Naval Res Lab, Washington, DC USA. RP Wilcox, CC (reprint author), US Naval Res Lab, Code 7216,4555 Overlook Ave SW, Washington, DC USA. EM chris.wilcox@nrl.navy.mil NR 12 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 978-0-8194-9379-8 J9 PROC SPIE PY 2013 VL 8610 AR UNSP 86100W DI 10.1117/12.2006479 PG 6 WC Meteorology & Atmospheric Sciences; Optics; Physics, Applied SC Meteorology & Atmospheric Sciences; Optics; Physics GA BGG94 UT WOS:000322907100023 ER PT S AU Lumb, MP Gonzalez, M Bailey, CG Vurgaftman, I Meyer, JR Abell, J Yakes, M Hoheisel, R Tischler, JG Stavrinou, PN Fuhrer, M Ekins-Daukes, NJ Walters, RJ AF Lumb, M. P. Gonzalez, M. Bailey, C. G. Vurgaftman, I. Meyer, J. R. Abell, J. Yakes, M. Hoheisel, R. Tischler, J. G. Stavrinou, P. N. Fuhrer, M. Ekins-Daukes, N. J. Walters, R. J. BE Freundlich, A Guillemoles, JF TI Drift-diffusion modeling of InP-based triple junction solar cells SO PHYSICS, SIMULATION, AND PHOTONIC ENGINEERING OF PHOTOVOLTAIC DEVICES II SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Physics, Simulation, and Photonic Engineering of Photovoltaic Devices II CY FEB 03-07, 2013 CL San Francisco, CA SP SPIE DE InP; Solar Cell; Multijunction; Modeling ID ALLOYS AB In this work, we use an analytical drift-diffusion model, coupled with detailed carrier transport and minority carrier lifetime estimates, to make realistic predictions of the conversion efficiency of InP-based triple junction cells. We evaluate the possible strategies for overcoming the problematic top cell for the triple junction, and make comparisons of the more realistic charge transport model with incumbent technologies grown on Ge or GaAs substrates. C1 [Lumb, M. P.; Gonzalez, M.; Bailey, C. G.; Vurgaftman, I.; Meyer, J. R.; Abell, J.; Yakes, M.; Hoheisel, R.; Tischler, J. G.; Walters, R. J.] US Naval Res Lab, Washington, DC 20375 USA. RP Lumb, MP (reprint author), US Naval Res Lab, Washington, DC 20375 USA. OI Stavrinou, Paul/0000-0001-6075-2587 NR 11 TC 7 Z9 7 U1 0 U2 6 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9389-7 J9 PROC SPIE PY 2013 VL 8620 AR 86201G DI 10.1117/12.2005332 PG 9 WC Energy & Fuels; Optics; Physics, Applied SC Energy & Fuels; Optics; Physics GA BGG32 UT WOS:000322825200037 ER PT J AU Kilpua, EKJ Isavnin, A Vourlidas, A Koskinen, HEJ Rodriguez, L AF Kilpua, E. K. J. Isavnin, A. Vourlidas, A. Koskinen, H. E. J. Rodriguez, L. TI On the relationship between interplanetary coronal mass ejections and magnetic clouds SO ANNALES GEOPHYSICAE LA English DT Article DE Solar physics; astrophysics; and astronomy; flares and mass ejections ID SOLAR-WIND; LASCO OBSERVATIONS; 1 AU; HELIOS; TEMPERATURE; SPACECRAFT; TRANSIENT; MAXIMUM; FIELDS; IMAGER AB The relationship of magnetic clouds (MCs) to interplanetary coronal mass ejections (ICMEs) is still an open issue in space research. The view that all ICMEs would originate as magnetic flux ropes has received increasing attention, although near the orbit of the Earth only about one-third of ICMEs show clear MC signatures and often the MC occupies only a portion of the more extended region showing ICME signatures. In this work we analyze 79 events between 1996 and 2009 reported in existing ICME/MC catalogs (Wind magnetic cloud list and the Richardson and Cane ICME list) using near-Earth observations by ACE (Advanced Composition Explorer) and Wind. We perform a systematic comparison of cases where ICME and MC signatures coincided and where ICME signatures extended significantly beyond the MC boundaries. We find clear differences in the characteristics of these two event types. In particular, the events where ICME signatures continued more than 6 h past the MC rear boundary had 2.7 times larger speed difference between the ICME's leading edge and the preceding solar wind, 1.4 times higher magnetic fields, 2.1 times larger widths and they experienced three times more often strong expansion than the events for which the rear boundaries coincided. The events with significant mismatch in MC and ICME boundary times were also embedded in a faster solar wind and the majority of them were observed close to the solar maximum. Our analysis shows that the sheath, the MC and the regions of ICME-related plasma in front and behind the MC have different magnetic field, plasma and charge state characteristics, thus suggesting that these regions separate already close to the Sun. Our study shows that the geometrical effect (the encounter through the CME leg and/or far from the flux rope center) does not contribute much to the observed mismatch in the MC and ICME boundary times. C1 [Kilpua, E. K. J.; Isavnin, A.; Koskinen, H. E. J.] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland. [Vourlidas, A.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA. [Koskinen, H. E. J.] Finnish Meteorol Inst, FIN-00101 Helsinki, Finland. [Rodriguez, L.] Royal Observ Belgium, Solar Terr Ctr Excellence SIDC, B-1180 Brussels, Belgium. RP Kilpua, EKJ (reprint author), Univ Helsinki, Dept Phys, POB 64, FIN-00014 Helsinki, Finland. EM emilia.kilpua@helsinki.fi RI Kilpua, Emilia/G-8994-2012; Vourlidas, Angelos/C-8231-2009; Koskinen, Hannu/B-4971-2017; OI Vourlidas, Angelos/0000-0002-8164-5948; Koskinen, Hannu/0000-0003-3839-6461; Isavnin, Alexey/0000-0002-7178-627X FU Academy of Finland [1218152]; NASA [S-136361-Y]; European Union [263252]; Belgian Federal Science Policy Office through the ESA-PRODEX program FX We thank N. Ness for the ACE MFI data, D. J. McComas for the ACE SWE data, and G. Gloeckler from the ACE SWICS data. The LASCO CME catalogue 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. Academy of Finland project 1218152 is thanked for financial support. A. Vourlidas' work is supported by NASA contract S-136361-Y to the Naval Research Laboratory. Luciano Rodriguez partially contributes to the research for the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement number 263252 [COMESEP]. Luciano Rodriguez acknowledges support from the Belgian Federal Science Policy Office through the ESA-PRODEX program. NR 67 TC 15 Z9 15 U1 0 U2 9 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 0992-7689 J9 ANN GEOPHYS-GERMANY JI Ann. Geophys. PY 2013 VL 31 IS 7 BP 1251 EP 1265 DI 10.5194/angeo-31-1251-2013 PG 15 WC Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA 192WO UT WOS:000322518500012 ER PT J AU Rypina, II Jayne, SR Yoshida, S Macdonald, AM Douglass, E Buesseler, K AF Rypina, I. I. Jayne, S. R. Yoshida, S. Macdonald, A. M. Douglass, E. Buesseler, K. TI Short-term dispersal of Fukushima-derived radionuclides off Japan: modeling efforts and model-data intercomparison SO BIOGEOSCIENCES LA English DT Article ID NUCLEAR-POWER-PLANT; COASTAL OCEAN MODEL; TRANSPORT; RADIOACTIVITY; ATMOSPHERE; ACCIDENT; PACIFIC AB The Great East Japan Earthquake and tsunami that caused a loss of power at the Fukushima nuclear power plants (FNPP) resulted in emission of radioactive isotopes into the atmosphere and the ocean. In June of 2011, an international survey measuring a variety of radionuclide isotopes, including Cs-137, was conducted in surface and subsurface waters off Japan. This paper presents the results of numerical simulations specifically aimed at interpreting these observations and investigating the spread of Fukushima-derived radionuclides off the coast of Japan and into the greater Pacific Ocean. Together, the simulations and observations allow us to study the dominant mechanisms governing this process, and to estimate the total amount of radionuclides in discharged coolant waters and atmospheric airborne radionuclide fallout. The numerical simulations are based on two different ocean circulation models, one inferred from AVISO altimetry and NCEP/NCAR reanalysis wind stress, and the second generated numerically by the NCOM model. Our simulations determine that >95% of Cs-137 remaining in the water within similar to 600 km of Fukushima, Japan in mid-June 2011 was due to the direct oceanic discharge. The estimated strength of the oceanic source is 16.2 +/- 1.6 PBq, based on minimizing the model-data mismatch. We cannot make an accurate estimate for the atmospheric source strength since most of the fallout cesium had left the survey area by mid-June. The model explained several key features of the observed Cs-137 distribution. First, the absence of Cs-137 at the southernmost stations is attributed to the Kuroshio Current acting as a transport barrier against the southward progression of Cs-137. Second, the largest Cs-137 concentrations were associated with a semi-permanent eddy that entrained Cs-137-rich waters, collecting and stirring them around the eddy perimeter. Finally, the intermediate Cs-137 concentrations at the westernmost stations are attributed to younger, and therefore less Cs-rich, coolant waters that continued to leak from the reactor in June of that year. C1 [Rypina, I. I.; Jayne, S. R.; Yoshida, S.; Macdonald, A. M.] Woods Hole Oceanog Inst, Dept Phys Oceanog, Woods Hole, MA 02543 USA. [Douglass, E.] Naval Res Lab, Stennis Space Ctr, MS 39529 USA. [Buesseler, K.] Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA. RP Rypina, II (reprint author), Woods Hole Oceanog Inst, Dept Phys Oceanog, Woods Hole, MA 02543 USA. EM irypina@whoi.edu FU Gordon and Betty Moore Foundation [GBMF3007]; [NSF-OCE-0725796] FX We would like to thank Emanuel Coelho for his help with the NCOM data, and to acknowledge the NRL-Stennis Space Center for providing the NCOM output and support. Delia Arnold and Arturo Vargas are acknowledged for providing the atmospheric deposition. Irina Rypina was partially supported by Grant NSF-OCE-0725796. This work is funded by the Gordon and Betty Moore Foundation through Grant GBMF3007 to Ken Buesseler. NR 36 TC 21 Z9 22 U1 2 U2 31 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1726-4170 J9 BIOGEOSCIENCES JI Biogeosciences PY 2013 VL 10 IS 7 BP 4973 EP 4990 DI 10.5194/bg-10-4973-2013 PG 18 WC Ecology; Geosciences, Multidisciplinary SC Environmental Sciences & Ecology; Geology GA 189BT UT WOS:000322242700037 ER PT S AU Bowman, SR O'Connor, S Condon, NJ Friebele, EJ Kim, WH Shaw, B Quimby, RS AF Bowman, Steven R. O'Connor, Shawn Condon, Nicholas J. Friebele, E. Joseph Kim, Woohong Shaw, B. Quimby, R. S. BE Epstein, RI Seletskiy, DV SheikBahae, M TI Non-radiative decay of holmium-doped laser materials SO LASER REFRIGERATION OF SOLIDS VI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser Refrigeration of Solids VI CY FEB 06-07, 2013 CL San Francisco, CA SP SPIE DE Holmium; infrared lasers; thermal loading; anti-Stokes fluorescence cooling AB We report a spectroscopic and calorimetric study of non-radiative losses in two micron pumped holmium doped laser materials. Wide variations in the fractional losses were found with changes in host material and dopant concentration. C1 [Bowman, Steven R.; O'Connor, Shawn; Condon, Nicholas J.; Friebele, E. Joseph; Kim, Woohong; Shaw, B.] USN, Res Lab, Washington, DC 20375 USA. [Quimby, R. S.] Worcester Polytech Inst, Dept Phys, Worcester, MA 01609 USA. RP Bowman, SR (reprint author), USN, Res Lab, Washington, DC 20375 USA. NR 7 TC 4 Z9 4 U1 4 U2 6 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9407-8 J9 PROC SPIE PY 2013 VL 8638 AR 863803 DI 10.1117/12.2007511 PG 6 WC Optics; Physics, Applied SC Optics; Physics GA BFX97 UT WOS:000321854200001 ER PT S AU Delehanty, JB Spillmann, CM Naciri, J Algar, WR Ratna, BR Medintz, IL AF Delehanty, James B. Spillmann, Christopher M. Naciri, Jawad Algar, W. Russ Ratna, Banahalli R. Medintz, Igor L. BE Parak, WJ Osinski, M Yamamoto, K TI Fluorescent Nanocolloids for Differential Labeling of the Endocytic Pathway and Drug Delivery Applications SO COLLOIDAL NANOCRYSTALS FOR BIOMEDICAL APPLICATIONS VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Colloidal Nanocrystals for Biomedical Applications VIII CY FEB 02-04, 2013 CL San Francisco, CA SP SPIE DE nanoassemblies; cell-penetrating peptide; transferrin; quantum dot; actuation; controlled release ID CARRIER; CANCER; CELLS AB The demonstration of fine control over nanomaterials within biological systems, particularly in live cells, is integral for the successful implementation of nanoparticles (NPs) in biomedical applications. Here, we show the ability to differentially label the endocytic pathway of mammalian cells in a spatiotemporal manner utilizing fluorescent nanocolloids (NCs) doped with a perylene-based dye. EDC-based conjugation of green-and red-emitting NCs to the iron transport protein transferrin resulted in stable bioconjugates that were efficiently endocytosed by HEK 293T/17 cells. The staggered delivery of the bioconjugates allowed for the time-resolved, differential labeling of distinct vesicular compartments along the endocytic pathway in a nontoxic manner. We further demonstrated the ability of the NCs to be impregnated with the anticancer therapeutic, doxorubicin. Delivery of the drug-doped nanoconjugates resulted in the intracellular release and nuclear accumulation of doxorubicin in a time-and dose-dependent manner. We discuss our results in the context of the utility of such materials for NP-mediated drug delivery applications. C1 [Delehanty, James B.; Spillmann, Christopher M.; Naciri, Jawad; Algar, W. Russ; Ratna, Banahalli R.; Medintz, Igor L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. RP Delehanty, JB (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, 4555 Overlook Ave SW, Washington, DC 20375 USA. RI Parak, Wolfgang J./M-3998-2014 OI Parak, Wolfgang J./0000-0003-1672-6650 NR 13 TC 0 Z9 0 U1 0 U2 9 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9364-4 J9 PROC SPIE PY 2013 VL 8595 AR 85951E DI 10.1117/12.2007749 PG 6 WC Crystallography; Engineering, Biomedical; Optics SC Crystallography; Engineering; Optics GA BFY50 UT WOS:000321896700025 ER PT S AU Susumu, K Oh, E Stewart, MH Delehanty, JB Gemmill, KB Jain, V Huston, AL Medintz, IL AF Susumu, Kimihiro Oh, Eunkeu Stewart, Michael H. Delehanty, James B. Gemmill, Kelly Boeneman Jain, Vaibhav Huston, Alan L. Medintz, Igor L. BE Parak, WJ Osinski, M Yamamoto, K TI Recent development of dihydrolipoic acid appended ligands for robust and biocompatible quantum dots SO COLLOIDAL NANOCRYSTALS FOR BIOMEDICAL APPLICATIONS VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Colloidal Nanocrystals for Biomedical Applications VIII CY FEB 02-04, 2013 CL San Francisco, CA SP SPIE DE quantum dot; ligand exchange; dihydrolipoic acid; multidentate; poly(ethylene glycol); zwitterion ID GOLD NANOPARTICLES; SEMICONDUCTOR NANOCRYSTALS; MULTIFUNCTIONAL LIGANDS; POLYETHYLENE-GLYCOL; SILICA SPHERES; STABILITY; SURFACE; COMPACT; WATER; FUNCTIONALITIES AB Biocompatible nanoparticles have recently attracted significant attention due to increasing interest in their use for biological sensing, cellular labeling and in vivo imaging. Semiconductor quantum dots (QDs) with good colloidal stability as well as small hydrodynamic sizes are particularly useful within these applications. We have developed a series of dihydrolipoic acid (DHLA) based surface ligands to enhance the colloidal stability and biocompatibility of water soluble QDs. Modification of DHLA with poly(ethylene glycol) derivatives provided the QDs with extended colloidal stability over a wide pH range and under high salt concentrations, which contrasts with the limited colloidal stability provided by DHLA alone. Functionalization of the PEG termini enabled one to have easy access to the QD surface and construct a variety of stable QD-biomolecules conjugates. A series of DHLA-based compact ligands with zwitterionic character has also been explored to develop compact sized QDs without sacrificing the colloidal stability. Despite their smaller sizes than the PEG analogs, the QDs coated with the zwitterionic ligands still have excellent colloidal stability and minimize nonspecific interactions in biological environments. Recent studies of thiol-based multidentate ligands and ligand exchange methods further improved the colloidal stability and fluorescence quantum yields. C1 [Susumu, Kimihiro; Oh, Eunkeu; Stewart, Michael H.; Jain, Vaibhav; Huston, Alan L.] Naval Res Lab, Div Opt Sci, Washington, DC 20375 USA. [Delehanty, James B.; Gemmill, Kelly Boeneman; Medintz, Igor L.] Naval Res Lab, Cte Biomol Sci & Engn, Washington, DC 20375 USA. [Susumu, Kimihiro; Oh, Eunkeu] Sotera Def Solut, Annapolis, MD 20701 USA. RP Susumu, K (reprint author), Naval Res Lab, Div Opt Sci, Washington, DC 20375 USA. RI Parak, Wolfgang J./M-3998-2014 OI Parak, Wolfgang J./0000-0003-1672-6650 FU NRL; NRL NSI; DARPA; ONR; ARO/DTRA FX The authors acknowledge NRL, the NRL NSI, DARPA, ONR, and ARO/DTRA for financial support. NR 47 TC 1 Z9 1 U1 2 U2 15 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9364-4 J9 PROC SPIE PY 2013 VL 8595 AR 859515 DI 10.1117/12.2004952 PG 9 WC Crystallography; Engineering, Biomedical; Optics SC Crystallography; Engineering; Optics GA BFY50 UT WOS:000321896700018 ER PT S AU Imam, MA Froes, FH Reddy, RG AF Imam, M. Ashraf Froes, F. H. (Sam) Reddy, Ramana G. BE Imam, MA Froes, FHS Reddy, RG TI COST EFFECTIVE DEVELOPMENTS FOR FABRICATION OF TITANIUM COMPONENTS SO COST-AFFORDABLE TITANIUM IV SE Key Engineering Materials LA English DT Proceedings Paper CT Symposium on Cost Affordable Titanium 4 at the 142nd TMS Annual Meeting and Exhibition CY MAR 03-07, 2013 CL San Antonio, TX SP TMS, Structural Mat Div, TMS, Titanium Comm DE Powder metallurgy; blended elemental; pre-alloyed; additive layer manufacturing; injection molding; spray deposition; microwave sintering; powder production AB The major reason that there is not more widespread use of titanium and its alloys is the high cost. In this paper, developments in one cost effective approach to fabrication of titanium components powder metallurgy - will be discussed under various aspects of this technology. The aspects to be discussed are the blended elemental approach, pre-alloyed techniques, additive layer manufacturing, metal injection molding, spray deposition and microwave sintering. A brief review of a number of low cost powder production processes is also presented. C1 [Imam, M. Ashraf] Naval Res Lab, Mat Sci & Tech Div, Washington, DC 20375 USA. RP Imam, MA (reprint author), Naval Res Lab, Mat Sci & Tech Div, Washington, DC 20375 USA. EM ashraf.imam@nrl.navy.mil; ssfroes@comcast.net; Rreddy@eng.ua.edu NR 5 TC 0 Z9 0 U1 4 U2 21 PU TRANS TECH PUBLICATIONS LTD PI STAFA-ZURICH PA LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND SN 1013-9826 J9 KEY ENG MATER PY 2013 VL 551 BP 3 EP 10 DI 10.4028/www.scientific.net/KEM.551.3 PG 8 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA BFX54 UT WOS:000321795200001 ER PT S AU Imam, MA Bruce, RW Feng, J Fliflet, AW AF Imam, M. Ashraf Bruce, Ralph W. Feng, Jerry Fliflet, Arne W. BE Imam, MA Froes, FHS Reddy, RG TI Consolidation of Blended Titanium/Magnesium Powders by Microwave Processing SO COST-AFFORDABLE TITANIUM IV SE Key Engineering Materials LA English DT Proceedings Paper CT Symposium on Cost Affordable Titanium 4 at the 142nd TMS Annual Meeting and Exhibition CY MAR 03-07, 2013 CL San Antonio, TX SP TMS, Structural Mat Div, TMS, Titanium Comm DE Mg-Ti alloy; microwave processing; consolidation; solubility ID ALLOY; FIELD; METAL; COMPOSITES; ENERGY AB Mg-Ti alloys are attractive for structural applications because of low density and improved corrosion resistance by selective oxidation including hydrogen storage and switchable mirror applications. Titanium has a melting point (1670 degrees C) that greatly exceeds the boiling point of magnesium (1090 degrees C) and therefore, alloying of Mg and Ti by conventional methods is extremely difficult. Secondly, the solubility of Ti in liquid Mg is very low and it is difficult to extend solubility by rapid solidification. Physical vapor deposition by electron beam deposition and magnetron co-sputtering has been used to extend the solubility of Ti in Mg. Mechanical alloying and anvil-cell processing at extreme temperatures and pressures have also used to enforce alloying of Mg with Ti. The present paper deals with the consolidation of blended magnesium-titanium powders by microwave heating, an approach that appears highly cost effective. C1 [Imam, M. Ashraf; Feng, Jerry; Fliflet, Arne W.] Naval Res Lab, Mat Sci & Component Technol Directorate, Washington, DC USA. RP Imam, MA (reprint author), Naval Res Lab, Mat Sci & Component Technol Directorate, Washington, DC USA. EM ashraf.imam@nrl.navy.mil; ralph.w.bruce@Vanderbilt.Edu; jerry.feng@nrl.navy.mil; arne.fliflet@nrl.navy.mil NR 27 TC 1 Z9 1 U1 1 U2 6 PU TRANS TECH PUBLICATIONS LTD PI STAFA-ZURICH PA LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND SN 1013-9826 J9 KEY ENG MATER PY 2013 VL 551 BP 73 EP 85 DI 10.4028/www.scientific.net/KEM.551.73 PG 13 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA BFX54 UT WOS:000321795200010 ER PT S AU Kim, W Baker, C Florea, C Frantz, J Villalobos, G Shaw, B Bowman, S O'Connor, S Sadowski, B Hunt, M Aggarwal, I Sanghera, J AF Kim, Woohong Baker, Colin Florea, Catalin Frantz, Jesse Villalobos, Guillermo Shaw, Brandon Bowman, Steve O'Connor, Shawn Sadowski, Bryan Hunt, Michael Aggarwal, Ishwar Sanghera, Jasbinder BE Clarkson, WA Shori, RK TI Doped Sesquioxide Ceramic for Eye-safe Solid State Laser Materials SO SOLID STATE LASERS XXII: TECHNOLOGY AND DEVICES SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Solid State Lasers XXII - Technology and Devices CY FEB 03-05, 2013 CL San Francisco, CA SP SPIE DE Sesquioxides; Nano-powders; transparent ceramics; eye-safe lasers ID HO-YAG; MU-M; THULIUM AB In this paper, we present our recent results in the development of Ho3+ doped sesquioxides for eye-safe solid state lasers. We have synthesized optical quality Lu2O3 nanopowders doped with concentrations of 0.1, 1.0, 2.0, and 5% Ho3+. The powders were synthesized by a co-precipitation method beginning with nitrates of holmium and lutetium. The nanopowders were hot pressed into optical quality ceramic discs. The optical transmission of the ceramic discs is excellent, nearly approaching the theoretical limit. The optical, spectral and morphological properties as well as the lasing performance from highly transparent ceramics are presented. C1 [Kim, Woohong; Baker, Colin; Frantz, Jesse; Villalobos, Guillermo; Shaw, Brandon; Bowman, Steve; O'Connor, Shawn; Sanghera, Jasbinder] Naval Res Lab, Opt Sci Div, Washington, DC 20375 USA. RP Kim, WH (reprint author), Naval Res Lab, Opt Sci Div, 4555 Overlook Av SW, Washington, DC 20375 USA. RI Baker, Colin/I-6657-2015 NR 16 TC 1 Z9 1 U1 1 U2 7 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-9368-2 J9 PROC SPIE PY 2013 VL 8599 AR 85990J DI 10.1117/12.2004524 PG 6 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BFY46 UT WOS:000321895100017 ER PT J AU Nicholls, ME Montgomery, MT AF Nicholls, M. E. Montgomery, M. T. TI An examination of two pathways to tropical cyclogenesis occurring in idealized simulations with a cloud-resolving numerical model SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID WAVE CRITICAL LAYER; BOUNDARY-LAYER; SQUALL-LINE; CUMULUS CONVECTION; POSSIBLE MECHANISM; DIURNAL-VARIATION; WESTERN PACIFIC; EASTERLY WAVES; GRAVITY-WAVES; TYPHOON NURI AB Simulations are conducted with a cloud-resolving numerical model to examine the transformation of a weak incipient mid-level cyclonic vortex into a tropical cyclone. Results demonstrate that two distinct pathways are possible and that development along a particular pathway is sensitive to model physics and initial conditions. One pathway involves a steady increase of the surface winds to tropical cyclone strength as the radius of maximum winds gradually decreases. A notable feature of this evolution is the creation of small-scale lower tropospheric cyclonic vorticity anomalies by deep convective towers and subsequent merger and convergence by the low-level secondary circulation. The second pathway also begins with a strengthening low-level circulation, but eventually a significantly stronger mid-level circulation develops. Cyclogenesis occurs subsequently when a small-scale surface concentrated vortex forms abruptly near the center of the larger-scale circulation. The small-scale vortex is warm core throughout the troposphere and results in a fall in local surface pressure of a few millibars. It usually develops rapidly, undergoing a modest growth to form a small tropical cyclone. Many of the simulated systems approach or reach tropical cyclone strength prior to development of a prominent mid-level vortex so that the subsequent formation of a strong small-scale surface concentrated vortex in these cases could be considered intensification rather than genesis. Experiments are performed to investigate the dependence on the inclusion of the ice phase, radiation, the size and strength of the incipient mid-level vortex, the amount of moisture present in the initial vortex, and the sea surface temperature. Notably, as the sea surface temperature is raised, the likelihood of development along the second pathway is in-creased. This appears to be related to an increased production of ice. The sensitivity of the pathway taken to model physics and initial conditions revealed by these experiments raise the possibility that the solution to this initial value problem is near a bifurcation point. Future improvements to model parameterizations and more accurate observations of the transformation of disturbances to tropical cyclones should clarify the conditions that favor a particular pathway when starting from a mid-level vortex. C1 [Nicholls, M. E.] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA. [Montgomery, M. T.] Naval Postgrad Sch, Dept Meteorol, Monterey, CA USA. [Montgomery, M. T.] NOAA, Hurricane Res Div, Miami, FL USA. RP Nicholls, ME (reprint author), Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA. EM melville.nicholls@colorado.edu FU National Science Foundation [NSF AGS 0965721, ATM-0733380]; U.S. Office of Naval Research [N00014-03-1-0185] FX We are grateful to Saurabh Barve for providing computational assistance, and Thomas Cram, Wesley Terwey and Donavan Wheeler for aid with data analysis code. This work was supported in part by the National Science Foundation, under Grants NSF AGS 0965721 and ATM-0733380, and by the U.S. Office of Naval Research Grant No. N00014-03-1-0185. NR 62 TC 12 Z9 12 U1 0 U2 16 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1680-7316 J9 ATMOS CHEM PHYS JI Atmos. Chem. Phys. PY 2013 VL 13 IS 12 BP 5999 EP 6022 DI 10.5194/acp-13-5999-2013 PG 24 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 182TC UT WOS:000321766300010 ER PT J AU Canby, D Sanders, E Cheek, GT AF Canby, D. Sanders, E. Cheek, G. T. TI Electrochemical Investigation of Fluorenone Complexation by Lewis Acids in Ionic Liquids SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID VOLTAMMETRIC INVESTIGATIONS; FRIES REARRANGEMENT; KETONE COMPLEXATION; APROTIC-SOLVENTS; CHLOROALUMINATE; TRANSITION; REDUCTION; QUINONES; CHLORIDE AB The electrochemical characteristics of 9-fluorenone have been investigated in various ionic liquids as a means of determining the extent of interaction of representative Lewis acids with this ketone. The ionic liquids studied, with Lewis acids in a particular medium, are : 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI BF4) [BF3 etherate], 1-butyl-1-methylpyrrolidinium trifluoromethanesulfonate (BMPY TfO) [Hf(TfO)(4) and Sc(TfO)(3)], and aluminum chloride : 1-ethyl-3-methylimidazolium chloride (AlCl3 : EMICl) [aluminum chloride]. In EMI BF4 and BMPY TfO, 9-fluorenone undergoes two successive one-electron transfers; however, addition of a Lewis acid produces a new reduction process shifted to a more positive potential. The extent of this shift is taken as an indication of the strength of the Lewis acid interaction with 9-fluorenone. The strongest Lewis acid : 9-fluorenone interaction, judging from the magnitude of the potential shift, is found in the AlCl3 : EMIC ionic liquid, followed by that of Hf(TfO)(4) in BMPY TfO. The interaction of Sc(TfO)(3) with 9-fluorenone in BMPY TfO is considerably less than that of Hf(TfO)(4) In EMI BF4, however, Sc(TfO)(3) interacts quite strongly with 9-fluorenone, indicating that the triflate anion interacts extensively enough with Sc3+ in BMPY TfO to restrict its complexation of 9-fluorenone. (C) 2013 The Electrochemical Society. C1 [Canby, D.; Sanders, E.; Cheek, G. T.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA. RP Canby, D (reprint author), US Naval Acad, Dept Chem, Annapolis, MD 21402 USA. EM cheek@usna.edu NR 33 TC 2 Z9 2 U1 2 U2 12 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PY 2013 VL 160 IS 7 BP G3159 EP G3164 DI 10.1149/2.025307jes PG 6 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA 183DQ UT WOS:000321794600026 ER PT J AU Small, JD Chuang, PY Jonsson, HH AF Small, Jennifer D. Chuang, Patrick Y. Jonsson, Haflidi H. TI Microphysical imprint of entrainment in warm cumulus SO TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY LA English DT Article DE inhomogeneous mixing; homogeneous mixing; GoMACCS; phase-Doppler interferometer; cloud microphysics ID DROPLET SPECTRAL EVOLUTION; CLOUD; AIRBORNE; DYNAMICS; AEROSOL; MODEL AB We analyse the cloud microphysical response to entrainment mixing in warm cumulus clouds observed from the CIRPAS Twin Otter during the GoMACCS field campaign near Houston, Texas, in summer 2006. Cloud drop size distributions and cloud liquid water contents from the Artium Flight phase-Doppler interferometer in conjunction with meteorological observations are used to investigate the degree to which inhomogeneous versus homogeneous mixing is preferred as a function of height above cloud base, distance from cloud edge and aerosol concentration. Using four complete days of data with 101 cloud penetrations (minimum 300 m in length), we find that inhomogeneous mixing primarily explains liquid water variability in these clouds. Furthermore, we show that there is a tendency for mixing to be more homogeneous towards the cloud top, which we attribute to the combination of increased turbulent kinetic energy and cloud drop size with altitude which together cause the Damkohler number to increase by a factor of between 10 and 30 from cloud base to cloud top. We also find that cloud edges appear to be air from cloud centres that have been diluted solely through inhomogeneous mixing. Theory predicts the potential for aerosol to affect mixing type via changes in drop size over the range of aerosol concentrations experienced (moderately polluted rural sites to highly polluted urban sites). However, the observations, while consistent with this hypothesis, do not show a statistically significant effect of aerosol on mixing type. C1 [Small, Jennifer D.] Univ Hawaii Manoa, Dept Meteorol, Honolulu, HI 96822 USA. [Chuang, Patrick Y.] Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA. [Jonsson, Haflidi H.] Naval Postgrad Sch, Ctr Interdisciplinary Remotely Piloted Aircraft S, Monterey, CA 93933 USA. RP Chuang, PY (reprint author), Univ Calif Santa Cruz, Dept Earth & Planetary Sci, 1156 High St, Santa Cruz, CA 95064 USA. EM pchuang@ucsc.edu NR 25 TC 3 Z9 3 U1 2 U2 6 PU CO-ACTION PUBLISHING PI JARFALLA PA RIPVAGEN 7, JARFALLA, SE-175 64, SWEDEN SN 0280-6509 J9 TELLUS B JI Tellus Ser. B-Chem. Phys. Meteorol. PY 2013 VL 65 AR 19922 DI 10.3402/tellusb.v65i0.19922 PG 18 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 188TP UT WOS:000322217200001 ER PT S AU Crabtree, C Zedd, M Ganguli, G Rudakov, L Healy, L AF Crabtree, Chris Zedd, Michael Ganguli, Gurudas Rudakov, Leonid Healy, Liam GP IEEE TI Formation and Dynamics of an Artificial Ring of Dust for Active Orbital Debris Removal SO 2013 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 02-09, 2013 CL Big Sky, MT SP IEEE AB Recently we suggested a dust-based active debris removal technique to selectively remove small untrackable debris that occupies a very large volume around the Earth. For designing a working system an accurate knowledge of the dynamics of the released dust in orbit is necessary. In this paper we numerically examine the dynamics of non-interacting spherical tungsten dust grains of diameter between 30-60 microns released in a polar low-Earth orbit. We analyze different perturbations due to nonuniform gravity, solar radiation pressure, solar cycles as well as solar and lunar gravity, and dust charging effects, etc., and determine a set of forces adequate to describe the dynamics over the life of the dust in orbit (similar to 12-15 years). With the resulting force model we analyze the orbits of many dust grains to determine the formation and geometry of the ring. We qualitatively examine the effects of the calculated geometry and dynamics of the dust cloud on the efficiency of the Active Debris Removal scheme. C1 [Crabtree, Chris; Ganguli, Gurudas] USN, Res Lab, Div Plasma Phys, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Zedd, Michael; Healy, Liam] Naval Res Lab, Naval Ctr Space Technol, Washington, DC 20375 USA. [Rudakov, Leonid] Icarus Res Inc, Bethesda, MD 20824 USA. RP Crabtree, C (reprint author), USN, Res Lab, Div Plasma Phys, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM chris.crabtree@nrl.navy.mil; michael.zedd@nrl.navy.mil; gurudas.ganguli@nrl.navy.mil; lrudakov@gmail.com; liam.healy@nrl.navy.mil FU Naval Research Laboratory base program FX This work is supported by the Naval Research Laboratory base program. We thank Prof. Heiner Klinkrad for encouraging us to undertake this study. NR 11 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1095-323X BN 978-1-4673-1811-2 J9 AEROSP CONF PROC PY 2013 PG 11 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BFJ62 UT WOS:000320123903060 ER PT S AU Crouse, DF AF Crouse, David Frederic GP IEEE TI One Can Do Better than the Unscented Kalman Filter for Multistatic Tracking SO 2013 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 02-09, 2013 CL Big Sky, MT SP IEEE ID MANEUVERING TARGET TRACKING; COORDINATE TRANSFORMATION BIAS; MONOMIAL CUBATURE RULES; RANGE-RATE MEASUREMENTS; BISTATIC RADAR SYSTEMS; NONLINEAR TRANSFORMATION; CONVERTED MEASUREMENTS; DATA ASSIMILATION; STATE ESTIMATION; QUADRATURE AB The unscented Kalman filter (UKF) is a useful alternative to the extended Kalman filter (EKF) for tracking with nonlinear dynamics models and when the measurements are nonlinear functions of the target state. In this paper, the problem of tracking using monostatic and bistatic measurements is considered. Previous work has demonstrated that the UKF does not always handle measurement nonlinearities in challenging monostatic scenarios better than the EKF, let alone considering more complicated bistatic scenarios. This paper reviews previous work showing that the UKF is one among many numeric integration-based filters. It is demonstrated that a general cubature Kalman filter outperforms the extended Kalman filter for multistatic tracking when cubature points of a sufficiently high order are used. Additionally, cubature-based measurement conversion for track initiation is discussed, and the posterior Cramer-Rao lower bound for basic multistatic tracker assessment is derived. C1 USN, Res Lab, Div Radar, Washington, DC 20375 USA. RP Crouse, DF (reprint author), USN, Res Lab, Div Radar, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM david.crouse@nrl.navy.mil NR 108 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1095-323X BN 978-1-4673-1811-2 J9 AEROSP CONF PROC PY 2013 PG 20 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BFJ62 UT WOS:000320123900063 ER PT S AU Crouse, DF AF Crouse, David Frederic GP IEEE TI How to Incorporate Generic Refraction Models into Multistatic Tracking Algorithms SO 2013 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 02-09, 2013 CL Big Sky, MT SP IEEE ID PROPAGATION; RADAR; RAYS AB The vast majority of literature published on target tracking ignores the effects of atmospheric refraction. When refraction is considered, the solutions are generally tailored to a simple exponential atmospheric refraction model. This paper discusses how arbitrary refraction models can be incorporated into tracking algorithms. Attention is paid to multistatic tracking problems, where uncorrected refractive effects can worsen track accuracy and consistency in centralized tracking algorithms, and can lead to difficulties in track-to-track association in distributed tracking filters. Monostatic and bistatic track initialization using refraction-corrupted measurements is discussed. The results are demonstrated using an exponential refractive model, though an arbitrary refraction profile can be substituted. C1 USN, Res Lab, Div Radar, Washington, DC 20375 USA. RP Crouse, DF (reprint author), USN, Res Lab, Div Radar, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM david.crouse@nrl.navy.mil NR 45 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1095-323X BN 978-1-4673-1811-2 J9 AEROSP CONF PROC PY 2013 PG 16 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BFJ62 UT WOS:000320123900062 ER PT S AU Franck, R Graven, P Liptak, L AF Franck, Raymond Chip Graven, Paul Liptak, Lynda GP IEEE TI Industry Perspectives on Plug-&-Play Spacecraft Avionics SO 2013 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 02-09, 2013 CL Big Sky, MT SP IEEE AB This paper describes the methodologies and findings from an industry survey of awareness and utility of Spacecraft Plug-&-Play Avionics (SPA). The survey was conducted via interviews, in-person and teleconference, with spacecraft prime contractors and suppliers. It focuses primarily on AFRL's SPA technology development activities but also explores the broader applicability and utility of Plug-&-Play (PnP) architectures for spacecraft. Interviews include large and small suppliers as well as large and small spacecraft prime contractors. Through these "product marketing" interviews, awareness and attitudes can be assessed, key technical and market barriers can be identified, and opportunities for improvement can be uncovered. Although this effort focuses on a high-level assessment, similar processes can be used to develop business cases and economic models which may be necessary to support investment decisions. C1 [Franck, Raymond Chip] USN, Postgrad Sch, Monterey, CA 93943 USA. RP USN, Postgrad Sch, Monterey, CA 93943 USA. EM refranck@nps.edu; pgraven@microcosminc.com; lynda.liptak.ctr@kirtland.af.mil NR 4 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1095-323X BN 978-1-4673-1811-2 J9 AEROSP CONF PROC PY 2013 PG 7 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BFJ62 UT WOS:000320123902079 ER PT S AU Jaffe, P AF Jaffe, Paul GP IEEE TI Sandwich Module Testing for Space Solar Power SO 2013 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 02-09, 2013 CL Big Sky, MT SP IEEE AB Solar power satellites have been envisioned as a means to provide electricity for terrestrial use. The approach entails collection of solar energy in space and its wireless transmission to the earth. This potentially gives the benefit of provision of base load power while avoiding the losses due to the day/night cycle and tropospheric effects that are associated with terrestrial solar power. Proponents have contended that the implementation of such systems could offer energy security, environmental, and technological advantages to those who would undertake their development. Among recent implementations commonly proposed for SSP, the Modular Symmetrical Concentrator and other modular concepts have received considerable attention. Each em ploys an array of modules for performing conversion of concentrated sunlight into microwaves or laser beams for transmission to earth. The research described herein details efforts in the development and testing of photovoltaic arrays, power electronics, microwave conversion electronics, and antennas for 2.45 GHz microwave-based "sandwich" module prototypes. Prototypes were designed, fabricated, and subjected to the challenging conditions inherent in the space environment, including the solar concentration levels in which an array of modules might be required to operate. C1 US Naval Res Lab, Washington, DC 20375 USA. RP Jaffe, P (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM Paul.jaffe@nrl.navy.mil NR 20 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1095-323X BN 978-1-4673-1811-2 J9 AEROSP CONF PROC PY 2013 PG 12 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BFJ62 UT WOS:000320123903029 ER PT S AU Jones, DL Lazio, J Giersch, L Hartman, J MacDowall, R Stewart, K Polisensky, E Bradley, R Weiler, K Burns, J AF Jones, Dayton L. Lazio, Joseph Giersch, Louis Hartman, Jacob MacDowall, Robert Stewart, Kenneth Polisensky, Emil Bradley, Richard Weiler, Kurt Burns, Jack GP IEEE TI Low Frequency Antenna Options for the Lunar Surface SO 2013 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 02-09, 2013 CL Big Sky, MT SP IEEE AB There are a number of scientific motivations for low frequency radio observations from space. These include the possibility of detecting, and eventually imaging, the spectral line of neutral Hydrogen from the cosmic Dark Ages, before the first stars formed. This is the period between the creation of the cosmic microwave background and the formation of the first stars, massive black holes, and galaxies, a period of large-scale structure formation in the universe. The Hydrogen line from the Dark Ages is redshifted down to frequencies of tens of MHz. In addition, imaging and tracking of emission from solar and interplanetary radio bursts, and detecting electron cyclotron emission from extrasolar gas giant planets, all require observations at and below Earth's ionospheric cutoff. Observations far from Earth can completely eliminate ionospheric absorption and distortion, and greatly reduce terrestrial interference (both natural and human-generated). But efficient antennas at low frequency are physically large. Consequently there has been a lot of work exploring concepts for low mass, wide bandwidth low frequency antennas that can be deployed in space. This paper summarizes recent work on deployable low frequency antennas, including thin film antennas that could be unrolled on the lunar surface and inflatable antennas for both free space and lunar locations. C1 [Jones, Dayton L.] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA. [MacDowall, Robert] Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Stewart, Kenneth; Polisensky, Emil] Naval Res Lab, Washington, DC 20375 USA. [Bradley, Richard] Natl Radio Astron Observ, Charlottesville, VA 22903 USA. [Weiler, Kurt] Computat Phys Inc, Springfield, VA 22151 USA. [Burns, Jack] Univ Colorado, Boulder, CO 80309 USA. RP Jones, DL (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA. EM Dayton.Jones@jpl.nasa.gov; Robert.J.MacDowall@nasa.gov; ken.stewart@nrl.navy.mil; rbradley@nrao.edu; Kurt.Weiler@weilerhome.org; jack.burns@cu.edu RI MacDowall, Robert/D-2773-2012 FU Lunar University Network for Astrophysical Research (LUNAR); NASA Lunar Science Institute to investigate concepts for astrophysical observatories on the Moon [NNA09DB30A] FX Part of this work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, with support from the Lunar University Network for Astrophysical Research (LUNAR). The LUNAR consortium is funded by the NASA Lunar Science Institute to investigate concepts for astrophysical observatories on the Moon via cooperative agreement NNA09DB30A. NR 19 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1095-323X BN 978-1-4673-1811-2 J9 AEROSP CONF PROC PY 2013 PG 8 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BFJ62 UT WOS:000320123900060 ER PT J AU Johnson, RS Zhangl, J Hyer, EJ Miller, SD Reid, JS AF Johnson, R. S. Zhangl, J. Hyer, E. J. Miller, S. D. Reid, J. S. TI Preliminary investigations toward nighttime aerosol optical depth retrievals from the VIIRS Day/Night Band SO ATMOSPHERIC MEASUREMENT TECHNIQUES LA English DT Article ID CLOUD-FREE OCEANS; MODIS; TERRA; NETWORK; LIGHTS AB A great need exists for reliable nighttime aerosol products at high spatial and temporal resolution. In this concept demonstration study, using Visible/Infrared Imager/Radiometer Suite (VIIRS) Day/Night Band (DNB) observations on the Suomi National Polar-orbiting Partnership (NPP) satellite, a new method is proposed for retrieving nighttime aerosol optical depth (tau) using the contrast between regions with and without artificial surface lights. Evaluation of the retrieved tau values against daytime AERONET data from before and after the overpass of the VIIRS satellite over the Cape Verde, Grand Forks, and Alta Floresta AERONET stations yields a coefficient of determination (r(2)) of 0.71. This study suggests that the VIIRS DNB has the potential to provide useful nighttime aerosol detection and property retrievals. C1 [Johnson, R. S.; Zhangl, J.] Univ N Dakota, Dept Atmospher Sci, Grand Forks, ND 58201 USA. [Hyer, E. J.; Reid, J. S.] Naval Res Lab, Marine Meteorol Div, Monterey, CA USA. [Miller, S. D.] Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA. RP Johnson, RS (reprint author), Univ N Dakota, Dept Atmospher Sci, Grand Forks, ND 58201 USA. EM johran@bethel.edu RI Reid, Jeffrey/B-7633-2014; Hyer, Edward/E-7734-2011 OI Reid, Jeffrey/0000-0002-5147-7955; Hyer, Edward/0000-0001-8636-2026 FU Office of Naval Research Code 32; UND seed money grant; Naval Research Laboratory [N00173-10-C-2003] FX This research was funded by the Office of Naval Research Code 32 and the UND seed money grant. Author S. D. M. acknowledges the support of the Naval Research Laboratory through contract N00173-10-C-2003. The group acknowledges the AERONET program, their contributing principal investigators, and their staff for coordinating the sites used in this investigation. NR 26 TC 10 Z9 10 U1 0 U2 12 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1867-1381 J9 ATMOS MEAS TECH JI Atmos. Meas. Tech. PY 2013 VL 6 IS 5 BP 1245 EP 1255 DI 10.5194/amt-6-1245-2013 PG 11 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 181OU UT WOS:000321679200010 ER PT J AU Bates, R Blue, A Christophersen, M Eklund, L Ely, S Fadeyev, V Gimenez, E Kachkanov, V Kalliopuska, J Macchiolo, A Maneuski, D Phlips, BF Sadrozinski, HFW Stewart, G Tartoni, N Zain, RM AF Bates, R. Blue, A. Christophersen, M. Eklund, L. Ely, S. Fadeyev, V. Gimenez, E. Kachkanov, V. Kalliopuska, J. Macchiolo, A. Maneuski, D. Phlips, B. F. Sadrozinski, H. F. -W. Stewart, G. Tartoni, N. Zain, R. M. TI Characterisation of edgeless technologies for pixellated and strip silicon detectors with a micro-focused X-ray beam SO JOURNAL OF INSTRUMENTATION LA English DT Article DE Pixelated detectors and associated VLSI electronics; Hybrid detectors; Instrumentation for particle accelerators and storage rings - high energy (linear accelerators, synchrotrons); Instrumentation for FEL AB Reduced edge or "edgeless" detector design offers seamless tileability of sensors for a wide range of applications from particle physics to synchrotron and free election laser (FEL) facilities and medical imaging. Combined with through-silicon-via (TSV) technology, this would allow reduced material trackers for particle physics and an increase in the active area for synchrotron and FEL pixel detector systems. In order to quantify the performance of different edgeless fabrication methods, 2 edgeless detectors were characterized at the Diamond Light Source using an 11 mu m FWHM 15 keV micro-focused X-ray beam. The devices under test were: a 150 mu m thick silicon active edge pixel sensor fabricated at VTT and bump-bonded to a Medipix2 ROIC; and a 300 mu m thick silicon strip sensor fabricated at CIS with edge reduction performed by SCIPP and the NRL and wire bonded to an ALiBaVa readout system. Sub-pixel resolution of the 55 mu m active edge pixels was achieved. Further scans showed no drop in charge collection recorded between the centre and edge pixels, with a maximum deviation of 5% in charge collection between scanned edge pixels. Scans across the cleaved and standard guard ring edges of the strip detector also show no reduction in charge collection. These results indicate techniques such as the scribe, cleave and passivate (SCP) and active edge processes offer real potential for reduced edge, tiled sensors for imaging detection applications. C1 [Bates, R.; Blue, A.; Eklund, L.; Maneuski, D.; Stewart, G.; Zain, R. M.] Univ Glasgow, SUPA Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland. [Gimenez, E.; Kachkanov, V.; Tartoni, N.] Diamond Light Source Ltd, Didcot OX11 0DE, Oxon, England. [Kalliopuska, J.] VTT Micro & Nanoelect, FI-02044 Espoo, VTT, Finland. [Ely, S.; Fadeyev, V.; Sadrozinski, H. F. -W.] Univ Calif Santa Cruz, SCIPP, UC Santa Cruz, Santa Cruz, CA 95064 USA. [Christophersen, M.; Phlips, B. F.] USN, Res Lab, Washington, DC 20375 USA. [Macchiolo, A.] Max Planck Inst, D-81739 Munich, Germany. RP Blue, A (reprint author), Univ Glasgow, SUPA Sch Phys & Astron, Kelvin Bldg, Glasgow G12 8QQ, Lanark, Scotland. EM andrew.blue@glasgow.ac.uk RI Christophersen, Marc/B-6795-2008; Blue, Andrew/C-9882-2016 OI Blue, Andrew/0000-0002-7716-5626 FU STFC; RD50 collaboration; Office of Navy Research (ONR) FX We would also like to acknowledge STFC for support through the funding of our work, and the RD50 collaboration for their financial contribution for the production of the SCP strip devices tested in this work; The work done at the U.S. Naval Research Laboratory was sponsored by the Office of Navy Research (ONR). NR 20 TC 9 Z9 9 U1 0 U2 11 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1748-0221 J9 J INSTRUM JI J. Instrum. PD JAN PY 2013 VL 8 AR P01018 DI 10.1088/1748-0221/8/01/P01018 PG 13 WC Instruments & Instrumentation SC Instruments & Instrumentation GA 167WF UT WOS:000320665400075 ER PT J AU Boyd, DA Shields, AR Howell, PB Ligler, FS AF Boyd, Darryl A. Shields, Adam R. Howell, Peter B., Jr. Ligler, Frances S. TI Design and fabrication of uniquely shaped thiol-ene microfibers using a two-stage hydrodynamic focusing design SO LAB ON A CHIP LA English DT Article ID NONCIRCULAR CARBON-FIBERS; SILK; FLOW AB Microfluidic systems have advantages that are just starting to be realized for materials fabrication. In addition to the more common use for fabrication of particles, hydrodynamic focusing has been used to fabricate continuous polymer fibers. We have previously described such a microfluidics system which has the ability to generate fibers with controlled cross-sectional shapes locked in place by in situ photopolymerization. The previous fiber fabrication studies produced relatively simple round or ribbon shapes, demonstrated the use of a variety of polymers, and described the interaction between sheath-core flow-rate ratios used to control the fiber diameter and the impact on possible shapes. These papers documented the fact that no matter what the intended shape, higher flow-rate ratios produced rounder fibers, even in the absence of interfacial tension between the core and sheath fluids. This work describes how to fabricate the next generation of fibers predesigned to have a much more complex geometry, as exemplified by the "double anchor'' shape. Critical to production of the pre-specified fibers with complex features was independent control over both the shape and the size of the fabricated microfibers using a two-stage hydrodynamic focusing system. Design and optimization of the channels was performed using finite element simulations and confocal imaging to characterize each of the two stages theoretically and experimentally. The resulting device design was then used to generate thiol-ene fibers with a unique double anchor shape. Finally, proof-of-principle functional experiments demonstrated the ability of the fibers to transport fluids and to interlock laterally. C1 [Boyd, Darryl A.; Shields, Adam R.; Howell, Peter B., Jr.; Ligler, Frances S.] USN, Res Lab, Washington, DC 20375 USA. RP Ligler, FS (reprint author), USN, Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA. EM frances.ligler@nrl.navy.mil RI Boyd, Darryl/F-4269-2016 OI Boyd, Darryl/0000-0001-7327-2443 FU ONR/NRL Work Unit [9899] FX Darryl A. Boyd and Adam R. Shields performed this research while National Research Council Postdoctoral Fellows. The work was supported by ONR/NRL Work Unit 9899. The views are those of the authors and do not represent the opinion or policy of the US Navy or Department of Defense. NR 28 TC 27 Z9 27 U1 5 U2 60 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1473-0197 J9 LAB CHIP JI Lab Chip PY 2013 VL 13 IS 15 BP 3105 EP 3110 DI 10.1039/c3lc50413a PG 6 WC Biochemical Research Methods; Chemistry, Multidisciplinary; Nanoscience & Nanotechnology SC Biochemistry & Molecular Biology; Chemistry; Science & Technology - Other Topics GA 175GX UT WOS:000321220000029 PM 23756632 ER PT S AU Wright, J Faucett, DC Ayre, M Choi, SR AF Wright, Jennifer Faucett, D. Calvin Ayre, Matt Choi, Sung R. BE Zhu, D Lin, HT Zhou, Y Hwang, T Halbig, M Mathur, S TI FOREIGN OBJECT DAMAGE (FOD) BEHAVIOR OF EB-PVD THERMAL BARRIER COATINGS (TBCs) IN AIRFOIL COMPONENTS SO ADVANCED CERAMIC COATINGS AND MATERIALS FOR EXTREME ENVIRONMENTS II SE Ceramic Engineering and Science Proceedings LA English DT Proceedings Paper CT 36th International Conference and Expo on Advanced Ceramics and Composites CY JAN 22-27, 2012 CL Daytona Beach, FL SP Amer Ceram Soc (ACerS), Amer Ceram Soc (ACerS), Engn Ceram Div (ECD) ID STEEL BALL PROJECTILES; GRADE SILICON NITRIDES; IMPACT DAMAGE; INELASTIC DEFORMATION; STRUCTURAL CERAMICS; SIC/SIC COMPOSITES; EROSION; INDENTATION; MECHANISMS; RESISTANCE AB A series of foreign-object-damage (FOD) tests on ceramic thermal barrier coatings (TBCs) of aeroengine airfoil components were performed to determine their responses to ballistic particle impact. Airfoils coated with electron beam, physical vapor deposition (EB-PVD) TBCs were FOD-tested by 1.6 mm-diameter spherical projectiles of two different materials of borosilicate glass and silicon nitride. A range of impact velocities from 150 to 300 m/s was employed for each of projectile materials. Degree and morphologies of impact damage were quantified and characterized in terms of impact velocity, projectile material, and component service-life. A first-order approximation of impact force was made based on the energy balance principle and the 'contact yield pressure' analysis. C1 [Wright, Jennifer; Faucett, D. Calvin; Ayre, Matt; Choi, Sung R.] USN, Air Syst Command, Patuxent River, MD 20670 USA. RP Choi, SR (reprint author), USN, Air Syst Command, Patuxent River, MD 20670 USA. EM sung.choi1@navy.mil NR 49 TC 0 Z9 0 U1 1 U2 3 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 0196-6219 BN 978-1-118-21747-4 J9 CERAM ENG SCI PROC PY 2013 BP 19 EP 35 PG 17 WC Materials Science, Ceramics SC Materials Science GA BFK97 UT WOS:000320335000003 ER PT J AU Chavez, DE Hanson, SK Veauthier, JM Parrish, DA AF Chavez, David E. Hanson, Susan K. Veauthier, Jacqueline M. Parrish, Damon A. TI Electroactive Explosives: Nitrate Ester-Functionalized 1,2,4,5-Tetrazines SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION LA English DT Article DE electroactive compounds; explosives; fluorescence; heterocycles; tetrazines ID S-TETRAZINES; MOLECULES; FLUORESCENCE; PETN C1 [Chavez, David E.; Hanson, Susan K.; Veauthier, Jacqueline M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Parrish, Damon A.] Naval Res Lab, Struct Matter Lab, Washington, DC 20375 USA. RP Chavez, DE (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM dechavez@lanl.gov OI Veauthier, Jacqueline/0000-0003-2206-7786 FU DOE Science Campaign 2; U.S. Department of Energy [DE-AC52-06A25396]; Office of Naval Research [N00014-11-AF-0-0002] FX The authors would like to thank the DOE Science Campaign 2 for funding, Anna Giambra, Daniel Preston, Mary Sandstrom, Jose Archuleta for performing the sensitivity characterization and testing, and David Morris for helpful discussions. Los Alamos National Laboratory is operated by Los Alamos National Security (LANS, LLC) under contract No. DE-AC52-06A25396 for the U.S. Department of Energy. The authors also thank the Office of Naval Research (Award No. N00014-11-AF-0-0002). NR 28 TC 25 Z9 26 U1 0 U2 32 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY SN 1433-7851 EI 1521-3773 J9 ANGEW CHEM INT EDIT JI Angew. Chem.-Int. Edit. PY 2013 VL 52 IS 27 BP 6876 EP 6879 DI 10.1002/anie.201302128 PG 4 WC Chemistry, Multidisciplinary SC Chemistry GA 169JS UT WOS:000320776900010 PM 23681779 ER PT J AU Beardsley, R Jang, M Ori, B Im, Y Delcomyn, CA Witherspoon, N AF Beardsley, Ross Jang, Myoseon Ori, Baber Im, Yunseok Delcomyn, Carrie A. Witherspoon, Ned TI Role of sea salt aerosols in the formation of aromatic secondary organic aerosol: yields and hygroscopic properties SO ENVIRONMENTAL CHEMISTRY LA English DT Article DE aerosol water content; toluene; 1,3,5-trimethylbenzene ID TEMPERATURE-DEPENDENCE; CHEMICAL MECHANISM; PARTICLES; MODEL; WATER; NOX; PHOTOOXIDATION; HYDROCARBONS; OXIDATION; PHASE AB Dual, large (52 m(3)), outdoor chambers were used to investigate the effect of aerosol aqueous phase chemistry on the secondary organic aerosol (SOA) yields of the photooxidation products of aromatic hydrocarbons in the coastal environment. Toluene and 1,3,5-trimethylbenzene were photochemically oxidised in the presence and absence of inorganic seeds (sea salt aerosol (SSA) or NaCl) at low NOx conditions. Overall, the presence of SSA, which was shown to contain water even at low relative humidities (RHs), led to higher SOA yields than the presence of NaCl seeds and the seedless condition. The results suggest that SOA yields in the coastal environment will be higher than those produced in terrestrial environment. To study the effect of SOA formation on the chemical composition of SSA, inorganic species were measured using a particle-into-liquid-sampler coupled to an ion chromatograph. The hygroscopic properties of the SSA internally mixed with SOA were analysed using a Fourier-transform infrared spectrometer. The fresh SSA shows a weak phase transition whereas no clear phase transition appeared in the aged SSA. The depletion of Cl- due to the accommodation of nitric acid and carboxylic acids on the surface of SSA coincides with changes in aerosol hygroscopic properties. C1 [Beardsley, Ross; Jang, Myoseon; Ori, Baber; Im, Yunseok] Univ Florida, Dept Environm Engn Sci, Gainesville, FL 32611 USA. [Delcomyn, Carrie A.; Witherspoon, Ned] USN, Sci Technol Anal & Simulat Dept, Ctr Surface Warfare, Panama City, FL 32407 USA. RP Jang, M (reprint author), Univ Florida, Dept Environm Engn Sci, POB 116450, Gainesville, FL 32611 USA. EM mjang@ufl.edu FU National Science Foundation [ATM-0852747]; [N61331-11-1-G001] FX This work was supported by grants from the Navy (N61331-11-1-G001) and National Science Foundation (ATM-0852747). NR 45 TC 11 Z9 11 U1 3 U2 30 PU CSIRO PUBLISHING PI COLLINGWOOD PA 150 OXFORD ST, PO BOX 1139, COLLINGWOOD, VICTORIA 3066, AUSTRALIA SN 1448-2517 J9 ENVIRON CHEM JI Environ. Chem. PY 2013 VL 10 IS 3 SI SI BP 167 EP 177 DI 10.1071/EN13016 PG 11 WC Chemistry, Analytical; Environmental Sciences SC Chemistry; Environmental Sciences & Ecology GA 173FU UT WOS:000321064400005 ER PT J AU Kedzierski, MA Carr, MA Brown, JS AF Kedzierski, M. A. Carr, M. A. Brown, J. S. TI MEASUREMENT AND PREDICTION OF VAPOR-SPACE CONDENSATION OF REFRIGERANTS ON TRAPEZOIDAL-FINNED AND TURBO-C GEOMETRIES SO JOURNAL OF ENHANCED HEAT TRANSFER LA English DT Article DE enhanced heat transfer; low-finned tube; passive enhancement; R123; R134a; R245fa; Turbo-CII ID HEAT-TRANSFER COEFFICIENTS; FILM CONDENSATION; TUBES; SURFACE AB This paper reports vapor-space condensation heat transfer measurements for R123, R134a, and R245fa for the integral trapezoidal fin, and the Turbo-CII geometries on vertical plates. The data consisted of heat flux and wall temperature difference measurements. Condensation heat transfer measurements on a smooth plate agreed well with both measurements and predictions from the literature. Overall, the heat transfer performance of the three refrigerants on the trapezoidal fin was within approximately 8 kW/m(2) of one another. Similarly, the condensation heat flux for R134a and R245fa on the Turbo-CII was within approximately 18 kW/m(2) of each other, while the heat flux of R123 on the Turbo-CII was between 10 and 80 kW/m2 less than that of R245fa. An existing finned tube condensation model was modified to be expressed in terms of the gradient of the condensate curvature with respect to the length of the liquid vapor interface. Curvature gradients for the two surfaces were developed that, when substituted into the modified model, predicted the present measured driving temperature differences for the trapezoidal fin and the Turbo-CII to within 0.4 and 1.2 K, respectively, for all measurements except for R123 on the Turbo-CII surface. With the aid of the curvature gradients, simple models were developed to predict the performance of the trapezoidal, low-finned tube, and the Turbo-C tube. The heat flux to the low-finned tube and the Turbo-C tube were predicted to within 10% and 15%, respectively, of the measured values from the literature for four different fluids. C1 [Kedzierski, M. A.] NIST, Gaithersburg, MD 20899 USA. [Carr, M. A.] USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA. [Brown, J. S.] Catholic Univ Amer, Dept Mech Engn, Washington, DC 20064 USA. RP Kedzierski, MA (reprint author), NIST, Gaithersburg, MD 20899 USA. EM Mark.Kedzierski@NIST.GOV FU NIST; US Navy FX This work was jointly funded by NIST and the US Navy. The authors would also like to express appreciation to NEST personnel Glen Glaeser for his help with rig modifications, and to Kyongmin Kwon, Piotr Domanski, and Andrew Persily for their constructive review. We are also grateful for the review comments of Ki-Jung Park of the Korea Atomic Energy Research Institute. Thanks goes to Weiland Products for donating the trapezoidal fin surface and to Wolverine Tube for donating a Turbo-CII tube. NR 24 TC 1 Z9 1 U1 0 U2 6 PU BEGELL HOUSE INC PI REDDING PA 50 CROSS HIGHWAY, REDDING, CT 06896 USA SN 1065-5131 J9 J ENHANC HEAT TRANSF JI J. Enhanc. Heat Transf. PY 2013 VL 20 IS 1 SI SI BP 59 EP 71 PG 13 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA 161OS UT WOS:000320203800006 ER PT J AU Metkus, KM Osofsky, MS Charipar, NA Pique, A AF Metkus, Kristin M. Osofsky, Michael S. Charipar, Nicholas A. Pique, Alberto TI Laser Direct-Write for Low AC Loss High Temperature Superconductor Applications SO JOURNAL OF LASER MICRO NANOENGINEERING LA English DT Article DE high temperature superconductor (HTS); metal organic decomposition; YBCO; laser direct-write; rapid prototyping ID YBCO COATED CONDUCTOR; FILMS AB The use of high temperature superconductors (HTS) in applications such as power cables, fault current limiters, and electromagnets, has seen rapid growth in recent years. While HTS exhibit zero dc resistance, appreciable ac losses are observed when the HTS are subject to an applied ac magnetic field. By dividing the HTS films into thin filament arrays and creating periodic metallic cross-overs to allow for flux penetration, the ac loss of the HTS can be significantly reduced. The HTS, YBa2Cu3O7-x (YBCO), films were prepared from the metal organic decomposition of a trifluoroacetate-based (TFA) precursor solution onto buffered substrates, manufactured by AMSC. To deposit the TFA solutions onto the buffered substrates, a new laser direct-write (LDW) technique was developed. LDW is a non-contact, non-lithographic process that relies on the mask-less printing of functional materials, such as metallic inks. The transferred TFA precursor filaments were then decomposed and subsequently characterized. In addition to the deposition of TFA precursors onto buffered substrates, LDW was used to print silver lines for metallic crossovers onto HTS tapes. These results show LDW to be a promising technique for the fabrication and modification of high temperature superconductors. C1 [Metkus, Kristin M.; Osofsky, Michael S.; Charipar, Nicholas A.; Pique, Alberto] USN, Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA. RP Metkus, KM (reprint author), USN, Res Lab, Div Mat Sci & Technol, Code 6364 4555 Overlook Ave SW, Washington, DC 20375 USA. EM kristin.metkus@nrl.navy.mil FU Office of Naval Research FX The authors wish to acknowledge M. Rupich and S. Sathyamurthy at AMSC for providing materials and assisting in processing. This work was sponsored by the Office of Naval Research. NR 20 TC 1 Z9 1 U1 4 U2 33 PU JAPAN LASER PROCESSING SOC PI OSAKA PA OSAKA UNIV, 11-1 MIHOGAOKA, IBARAKI C/O KATAYAMA LAB, JOINING & WELDING RES INST, OSAKA, 567-0047, JAPAN SN 1880-0688 J9 J LASER MICRO NANOEN JI J. Laser Micro Nanoeng. PD JAN PY 2013 VL 8 IS 1 BP 19 EP 23 DI 10.2961/jlmn.2013.01.0005 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Optics; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Optics; Physics GA 172NC UT WOS:000321009800005 ER PT S AU Johnson-Laird, PN Khemlani, SS AF Johnson-Laird, P. N. Khemlani, Sangeet S. BE Ross, BH TI Toward a Unified Theory of Reasoning SO PSYCHOLOGY OF LEARNING AND MOTIVATION, VOL 59 SE Psychology of Learning and Motivation LA English DT Article; Book Chapter ID MENTAL MODEL-THEORY; TRANSITIVE INFERENCES; ILLUSORY INFERENCES; PREFRONTAL CORTEX; SPATIAL RELATIONS; NATURAL-LANGUAGE; NON-PROGRAMMERS; YOUNG-CHILDREN; 3 PRISONERS; PROBABILITY AB This article describes a theory that uses mental models to integrate deductive, inductive, and probabilistic reasoning. It spells out the main principles of the theory and illustrates them with examples from various domains. It shows how models underlie inductions, explanations, estimates of probabilities, and informal algorithms. In all these cases, a central principle is that the mind represents each sort of possibility in a separate mental model and infers whatever holds in the resulting set of models. Finally, the article reviews what has been accomplished in implementing the theory in a single large-scale computer program, mReasoner. C1 [Johnson-Laird, P. N.] Princeton Univ, Dept Psychol, Princeton, NJ 08544 USA. [Johnson-Laird, P. N.] NYU, Dept Psychol, New York, NY 10003 USA. [Khemlani, Sangeet S.] Naval Res Lab, Navy Ctr Appl Res Artificial Intelligence, Washington, DC USA. RP Johnson-Laird, PN (reprint author), Princeton Univ, Dept Psychol, Princeton, NJ 08544 USA. EM phil@princeton.edu NR 118 TC 6 Z9 7 U1 4 U2 21 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA SN 0079-7421 BN 978-0-12-407187-2 J9 PSYCHOL LEARN MOTIV JI Psychol. Learn. Motiv. PY 2013 VL 59 BP 1 EP 42 DI 10.1016/B978-0-12-407187-2.00001-0 PG 42 WC Psychology, Experimental SC Psychology GA BFV92 UT WOS:000321592400001 ER PT S AU Cheek, GT AF Cheek, G. T. BE Cheek, G Peters, D TI Electrochemical Investigation of Ketone Complexation by Lewis Acids in a Chloroaluminate Ionic Liquid SO 10TH MANUEL M. BAIZER MEMORIAL SYMPOSIUM ON ORGANIC ELECTROCHEMISTRY SE ECS Transactions LA English DT Proceedings Paper CT 10th Manuel M. Baizer Memorial Symposium on Organic Electrochemistry was held at the 221st Electrochemical-Society (ECS) Meeting CY MAY 07-08, 2012 CL Seattle, WA SP Electrochem Soc (ECS), Organ & Biol Electrochemistry Div ID VOLTAMMETRIC INVESTIGATIONS AB A comparative study of 9-fluorenone electrochemistry in the AlCl3 : 1-ethyl-3-methylimidazolium chloride system has been carried out by addition of the Lewis acids AlCl3 and HfCl4 to fluorenone initially in the neutral melt. It has been found that each Lewis acid is capable of forming a complex with fluorenone, resulting in a positive peak potential shift for the reduction process. Neither these peak potentials, nor the colors of the complexes, are exactly the same, indicating that distinct complexes are formed for HfCl4 and AlCl3. There is some possibility of interaction of HfCl4 with the chloroaluminate melt to form the Lewis acid Al2Cl7-, but this route seems to play a minor role in the present case. C1 US Naval Acad, Dept Chem, Annapolis, MD 21402 USA. RP Cheek, GT (reprint author), US Naval Acad, Dept Chem, Annapolis, MD 21402 USA. NR 10 TC 1 Z9 1 U1 0 U2 3 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-405-3 J9 ECS TRANSACTIONS PY 2013 VL 45 IS 30 BP 23 EP 27 DI 10.1149/04530.0023ecst PG 5 WC Electrochemistry SC Electrochemistry GA BFN37 UT WOS:000320612400004 ER PT S AU Martinson, E Lawson, W Trafton, JG AF Martinson, Eric Lawson, Wallace Trafton, J. Gregory BE Kuzuoka, H Evers, V Imai, M Forlizzi, J TI Identifying People with Soft-Biometrics at Fleet Week SO PROCEEDINGS OF THE 8TH ACM/IEEE INTERNATIONAL CONFERENCE ON HUMAN-ROBOT INTERACTION (HRI 2013) SE ACMIEEE International Conference on Human-Robot Interaction LA English DT Proceedings Paper CT 8th Annual ACM/IEEE International Conference on Human-Robot Interaction (HRI) CY MAR 03-06, 2013 CL Tokyo, JAPAN SP ACM, IEEE, IEEE Robot & Automat (RA), AAAI, Human Factors & Ergonom Soc (HFES), ACM SIGCHI, ACM SIGART DE I.2.9 Robotics; Person Identification; Soft Biometrics ID FACE AB Person identification is a fundamental robotic capability for long-term interactions with people. It is important to know with whom the robot is interacting for social reasons, as well as to remember user preferences and interaction histories. There exist, however, a number of different features by which people can be identified. This work describes three alternative, soft biometrics (clothing, complexion, and height) that can be learned in real-time and utilized by a humanoid robot in a social setting for person identification. The use of these biometrics is then evaluated as part of a novel experiment in robotic person identification carried out at Fleet Week, New York City in May, 2012. In this experiment, Octavia employed soft biometrics to discriminate between groups of 3 people. 202 volunteers interacted with Octavia as part of the study, interacting with the robot from multiple locations in a challenging environment. C1 [Martinson, Eric; Lawson, Wallace; Trafton, J. Gregory] USN, Res Lab, Washington, DC 20375 USA. RP Martinson, E (reprint author), USN, Res Lab, Washington, DC 20375 USA. EM eric.martinson.ctr@nrl.navy.mil; ed.lawson@nrl.navy.mil; greg.trafton@nrl.navy.mil NR 16 TC 9 Z9 9 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2167-2121 BN 978-1-4673-3055-8 J9 ACMIEEE INT CONF HUM PY 2013 BP 49 EP 56 PG 8 WC Engineering, Electrical & Electronic; Robotics SC Engineering; Robotics GA BFN86 UT WOS:000320655500007 ER PT S AU Ko, YK Raymond, JC Rakowski, C Rouillard, A AF Ko, Yuan-Kuen Raymond, John C. Rakowski, Cara Rouillard, Alexis BE Zank, GP Borovsky, J Bruno, R Cirtain, J Cranmer, S Elliott, H Giacalone, J Gonzalez, W Li, G Marsch, E Moebius, E Pogorelov, N Spann, J Verkhoglyadova, O TI Heavy Ion Properties in ICMEs and Signatures of Magnetic Reconnection in Post-CME Current Sheet SO PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL SOLAR WIND CONFERENCE (SOLAR WIND 13) SE AIP Conference Proceedings LA English DT Proceedings Paper CT 13th International Solar Wind Conference (Solar Wind) CY JUN 17-22, 2012 CL HI SP Natl Sci Fdn (NSF), Int Conf & Networking Solut (ICNS) DE Coronal Mass Ejections; Solar Wind; Magnetic Reconnection ID CORONAL MASS EJECTIONS; OBSERVATIONAL EVIDENCE; DENSITY; FLARE AB We present the in-situ heavy ion properties in an ICME structure, and model the ion charge composition by an existing post-CME current sheet model. We use this work to illustrate the diagnostic power of ICME ion charge composition for differentiating models of magnetic reconnection associated with CMEs. C1 [Ko, Yuan-Kuen; Rakowski, Cara] Naval Res Lab, Div Space Sci, Washington, DC USA. RP Ko, YK (reprint author), Naval Res Lab, Div Space Sci, Washington, DC USA. NR 19 TC 2 Z9 2 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-1163-0 J9 AIP CONF PROC PY 2013 VL 1539 BP 207 EP 210 DI 10.1063/1.4811024 PG 4 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BFQ76 UT WOS:000320997100049 ER PT J AU Fontana, J Naciri, J Rendell, R Ratna, BR AF Fontana, Jake Naciri, Jawad Rendell, Ronald Ratna, Banahalli R. TI Macroscopic Self-Assembly and Optical Characterization of Nanoparticle-Ligand Metamaterials SO ADVANCED OPTICAL MATERIALS LA English DT Article ID NEGATIVE-INDEX; SPECTROSCOPIC ELLIPSOMETRY; GOLD NANOPARTICLES; SUPERLATTICES; FILMS AB A self-assembled metamaterial exhibiting a positive near-zero index of refraction at visible wavelengths is demonstrated. The metamaterial consists of thiolene-functionalized gold nanospheres self-assembled into macroscopic, crosslinked, monolayers. By measuring the real and imaginary parts of the phase shift of light transmitted through the self-assembled films the effective index of refraction is determined as a function of wavelength. These findings may pave a way to simply and efficiently self-assemble and optically characterize multifunctional, multilayer nanoparticle-ligand metamaterials. C1 [Fontana, Jake; Naciri, Jawad; Rendell, Ronald; Ratna, Banahalli R.] Naval Res Lab, Washington, DC 20375 USA. RP Fontana, J (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM jake.fontana.ctr@nrl.navy.mil FU Office of Naval Research FX This work was supported with funding provided from the Office of Naval Research. J. Fontana is a NRC-NRL postdoctoral resident at the Naval Research Laboratory. J. Naciri and B. Ratna are affiliated with the Center for Biomolecular Science and Engineering and R. Rendell with the Electronics Science and Technology division at the Naval Research Laboratory. J. Fontana acknowledges the National Research Council for a postdoctoral associateship and also thanks P. Palffy-Muhoray for past discussions. We thank C. Spillmann and S. Trammell for reviewing the manuscript. NR 26 TC 16 Z9 16 U1 2 U2 46 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY SN 2195-1071 J9 ADV OPT MATER JI Adv. Opt. Mater. PD JAN PY 2013 VL 1 IS 1 BP 100 EP 106 DI 10.1002/adom.201200039 PG 7 WC Materials Science, Multidisciplinary; Optics SC Materials Science; Optics GA 172IZ UT WOS:000320997600012 ER PT S AU Field, KG Wetteland, CJ Cao, G Maier, BR Dickerson, C Gerczak, TJ Field, CR Kriewaldt, K Sridharan, K Allen, TR AF Field, K. G. Wetteland, C. J. Cao, G. Maier, B. R. Dickerson, C. Gerczak, T. J. Field, C. R. Kriewaldt, K. Sridharan, K. Allen, T. R. BE McDaniel, FD Doyle, BL Glass, GA Wang, Y TI University of Wisconsin Ion Beam Laboratory: A Facility for Irradiated Materials and Ion Beam Analysis SO APPLICATION OF ACCELERATORS IN RESEARCH AND INDUSTRY SE AIP Conference Proceedings LA English DT Proceedings Paper CT 22nd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY AUG 05-10, 2012 CL Fort Worth, TX SP Sandia Natl Labs, Univ N Texas, Los Alamos Natl Lab, Pacific NW Natl Lab, High Voltage Engn Europa B V, Kurt J Lester Co, Natl Electrostat Corp DE Ion Beam; TORVIS; Nuclear Materials; Radiation Damage ID MECHANICAL-PROPERTIES; CARBIDE; MICROSTRUCTURE; COATINGS AB The University of Wisconsin Ion Beam Laboratory (UW-IBL) has recently undergone significant infrastructure upgrades to facilitate graduate level research in irradiated materials phenomena and ion beam analysis. A National Electrostatics Corp. (NEC) Torodial Volume Ion Source (TORVIS), the keystone upgrade for the facility, can produce currents of hydrogen ions and helium ions up to similar to 200 mu A and similar to 5 mu A, respectively. Recent upgrades also include RBS analysis packages, end station developments for irradiation of relevant material systems, and the development of an in-house touch screen based graphical user interface for ion beam monitoring. Key research facilitated by these upgrades includes irradiation of nuclear fuels, studies of interfacial phenomena under irradiation, and clustering dynamics of irradiated oxide dispersion strengthened steels. The UW-IBL has also partnered with the Advanced Test Reactor National Scientific User Facility (ATR-NSUF) to provide access to the irradiation facilities housed at the UW-IBL as well as access to post irradiation facilities housed at the UW Characterization Laboratory for Irradiated Materials (CLIM) and other ATR-NSUF partner facilities. Partnering allows for rapid turnaround from proposed research to finalized results through the ATR-NSUF rapid turnaround proposal system. An overview of the UW-IBL including CLIM and relevant research is summarized. C1 [Field, K. G.; Wetteland, C. J.; Cao, G.; Maier, B. R.; Gerczak, T. J.; Kriewaldt, K.; Sridharan, K.; Allen, T. R.] Univ Wisconsin, Madison, WI 53706 USA. [Dickerson, C.] Argonne Natl Lab, Argonne, IL 60439 USA. [Field, C. R.] Naval Res Lab, Washington, DC 20375 USA. RP Field, KG (reprint author), Univ Wisconsin, Madison, WI 53706 USA. RI Field, Kevin/K-1942-2013; OI Field, Kevin/0000-0002-3105-076X; Allen, Todd/0000-0002-2372-7259; Gerczak, Tyler/0000-0001-9967-3579 NR 20 TC 2 Z9 3 U1 0 U2 11 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-1148-7 J9 AIP CONF PROC PY 2013 VL 1525 BP 159 EP 164 DI 10.1063/1.4802311 PG 6 WC Physics, Applied; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFI58 UT WOS:000319997900032 ER PT S AU Hicks, SF Chakraborty, A Combs, B Crider, BP Downes, L Girgis, J Kersting, LJ Kumar, A Lueck, CJ McDonough, PJ McEllistrem, MT Peters, EE Prados-Estevz, FM Schniederjan, J Sidwell, L Sigillito, AJ Vanhoy, JR Watts, D Yates, SW AF Hicks, S. F. Chakraborty, A. Combs, B. Crider, B. P. Downes, L. Girgis, J. Kersting, L. J. Kumar, A. Lueck, C. J. McDonough, P. J. McEllistrem, M. T. Peters, E. E. Prados-Estevz, F. M. Schniederjan, J. Sidwell, L. Sigillito, A. J. Vanhoy, J. R. Watts, D. Yates, S. W. BE McDaniel, FD Doyle, BL Glass, GA Wang, Y TI Elastic and Inelastic Neutron Scattering Cross Sections for Fission Reactor Applications SO APPLICATION OF ACCELERATORS IN RESEARCH AND INDUSTRY SE AIP Conference Proceedings LA English DT Proceedings Paper CT 22nd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY AUG 05-10, 2012 CL Fort Worth, TX SP Sandia Natl Labs, Univ N Texas, Los Alamos Natl Lab, Pacific NW Natl Lab, High Voltage Engn Europa B V, Kurt J Lester Co, Natl Electrostat Corp DE Neutron scattering; elastic and inelastic neutron scattering differential cross sections ID SYSTEMS AB Nuclear data important for the design and development of the next generation of light-water reactors and future fast reactors include neutron elastic and inelastic scattering cross sections on important structural materials, such as Fe, and on coolant materials, such as Na. These reaction probabilities are needed since neutron reactions impact fuel performance during irradiations and the overall efficiency of reactors. While neutron scattering cross sections from these materials are available for certain incident neutron energies, the fast neutron region, particularly above 2 MeV, has large gaps for which no measurements exist, or the existing uncertainties are large. Measurements have been made at the University of Kentucky Accelerator Laboratory to measure neutron scattering cross sections on both Fe and Na in the region where these gaps occur and to reduce the uncertainties on scattering from the ground state and first excited state of these nuclei. Results from measurements on Fe at incident neutron energies between 2 and 4 MeV will be presented and comparisons will be made to model calculations available from data evaluators. C1 [Hicks, S. F.; Combs, B.; Downes, L.; Girgis, J.; Kersting, L. J.; Lueck, C. J.; McDonough, P. J.; Schniederjan, J.; Sidwell, L.; Sigillito, A. J.] Univ Dallas, Dept Phys, Irving, TX 75019 USA. [Chakraborty, A.; Crider, B. P.; Kumar, A.; McEllistrem, M. T.; Peters, E. E.; Prados-Estevz, F. M.; Yates, S. W.] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA. [Yates, S. W.] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA. [Vanhoy, J. R.; Watts, D.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA. RP Hicks, SF (reprint author), Univ Dallas, Dept Phys, Irving, TX 75019 USA. RI Sigillito, Anthony/N-5981-2015 OI Sigillito, Anthony/0000-0002-4765-9414 NR 8 TC 0 Z9 0 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-1148-7 J9 AIP CONF PROC PY 2013 VL 1525 BP 276 EP 281 DI 10.1063/1.4802333 PG 6 WC Physics, Applied; Physics, Nuclear; Physics, Particles & Fields SC Physics GA BFI58 UT WOS:000319997900054 ER PT J AU Rauh, MJ Aralis, HJ Melcer, T Macera, CA Sessoms, P Bartlett, J Galarneau, MR AF Rauh, Mitchell J. Aralis, Hilary J. Melcer, Ted Macera, Caroline A. Sessoms, Pinata Bartlett, Jamie Galarneau, Michael R. TI Effect of traumatic brain injury among US servicemembers with amputation SO JOURNAL OF REHABILITATION RESEARCH AND DEVELOPMENT LA English DT Article DE amputation; blasts; combat-related; military; occupational therapy; odds ratio; physical therapy; postinjury complications; prosthetic use; rehabilitative use; service discharge; traumatic brain injury ID ARMY MEDICAL-CENTER; OPERATION IRAQI FREEDOM; ORTHOPEDIC TRAUMA; BATTLE CASUALTIES; AMPUTEE SOLDIERS; CARE; REHABILITATION; SEVERITY; PREVALENCE; DEPRESSION AB Servicemembers with combat-related limb loss often require substantial rehabilitative care. The prevalence of traumatic brain injury (TBI), which may impair cognitive and functional abilities, among servicemembers has increased. The primary objectives of this study were to determine the frequency of TBI among servicemembers with traumatic amputation and examine whether TBI status was associated with discharge to civilian status and medical and rehabilitative service use postamputation. U.S. servicemembers who had a combat-related amputation while deployed in Iraq or Afghanistan between 2001 and 2006 were followed for 2 yr postamputation. Data collected includes injury mechanism; postinjury complications; Injury Severity Score (ISS); and follow-up data, including military service discharge status and number of medical, physical, occupational therapy, and prosthetic-related visits. Of the 546 servicemembers with combat-related amputations, 127 (23.3%) had a TBI diagnosis. After adjusting for ISS and amputation location, those with TBI had a significantly greater mean number of medical and rehabilitative outpatient and inpatient visits combined (p < 0.01). Those with TBI were also at greater odds of developing certain postinjury complications. We recommend that providers treating servicemembers with limb loss should assess for TBI because those who sustained TBI required increased medical and rehabilitative care. C1 [Rauh, Mitchell J.; Aralis, Hilary J.; Macera, Caroline A.; Sessoms, Pinata; Bartlett, Jamie] USN, Hlth Res Ctr, Warfighter Performance Dept, San Diego, CA 92106 USA. [Rauh, Mitchell J.] San Diego State Univ, Doctor Phys Therapy Program, San Diego, CA 92182 USA. [Rauh, Mitchell J.; Melcer, Ted; Galarneau, Michael R.] USN, Hlth Res Ctr, Med Modeling Simulat & Mission Support Dept, San Diego, CA 92106 USA. [Macera, Caroline A.] San Diego State Univ, Grad Sch Publ Hlth, San Diego, CA 92182 USA. RP Rauh, MJ (reprint author), USN, Hlth Res Ctr, Warfighter Performance Dept, 140 Sylvester Rd, San Diego, CA 92106 USA. EM mrauh@mail.sdsu.edu RI Bartlett, Jamie/B-9756-2014 OI Bartlett, Jamie/0000-0001-7934-7119 FU Wounded, Ill, and Injured/Traumatic Brain Injury program of the U.S. Navy Bureau of Medicine and Surgery (DOD work unit) [60818] FX This material was based on work supported by the Wounded, Ill, and Injured/Traumatic Brain Injury program of the U.S. Navy Bureau of Medicine and Surgery (DOD work unit no. 60818). NR 46 TC 6 Z9 7 U1 1 U2 7 PU JOURNAL REHAB RES & DEV PI BALTIMORE PA DEPT OF VETERANS AFFAIRS REHABIL RES & DEVELOP CTR 103 SOUTH GAY STREET, BALTIMORE, MD 21202-4051 USA SN 0748-7711 J9 J REHABIL RES DEV JI J. Rehabil. Res. Dev. PY 2013 VL 50 IS 2 BP 161 EP 172 DI 10.1682/JRRD.2011.11.0212 PG 12 WC Rehabilitation SC Rehabilitation GA 149FF UT WOS:000319303700005 PM 23760997 ER PT J AU Love, CT Korovina, A Patridge, CJ Swider-Lyons, KE Twigg, ME Ramaker, DE AF Love, Corey T. Korovina, Anna Patridge, Christopher J. Swider-Lyons, Karen E. Twigg, Mark E. Ramaker, David E. TI Review of LiFePO4 Phase Transition Mechanisms and New Observations from X-ray Absorption Spectroscopy SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Review ID RECHARGEABLE LITHIUM BATTERIES; ENERGY-LOSS SPECTROSCOPY; DOMINO-CASCADE MODEL; IN-SITU; NANOSCALE OLIVINES; OXYGEN REDUCTION; ROOM-TEMPERATURE; ADSORPTION SITES; CATHODE MATERIAL; MISCIBILITY GAP AB The high rate capability and reversibility of lithium iron phosphate battery cathodes is attributed to the highly reversible transition between its LiFePO4 and FePO4 phases. Conflicting models exist for the phase transition mechanism, such as the shrinking or expanding core models, surface reaction limited model, and the single-phase kinetic model. A literature review suggests that the subscribed theories depend upon the experimental methods and also the geometry and size of the LiFePO4 particles. We study the electronic structure and disorder during the two-phase transition of commercial oval-shaped LiFePO4 particles using in situ XAS (X-ray absorption spectroscopy) with the Delta mu XANES (X-ray absorption neat edge structure) difference technique along with traditional EXAFS (extended X-ray absorption fine structure) to track the Debye-Waller (DW) factor. The Delta mu XANES magnitude, vertical bar Delta mu vertical bar, tracks changes in the electronic structure which does not follow a synchronous path with lithium content. The magnitude of the DW shows the degree of structural disorder reaches a maximum near the middle of the charge/discharge cycle. The combined vertical bar Delta mu vertical bar and EXAFS results suggests the LiFePO4/FePO4 transition occurs through a "collective mosaic" or an unrelaxed "sequential" single-phase kinetic model. (C) 2013 The Electrochemical Society. All rights reserved. C1 [Love, Corey T.; Swider-Lyons, Karen E.; Ramaker, David E.] USN, Res Lab, Div Chem, Washington, DC 20375 USA. [Korovina, Anna] George Washington Univ, Dept Chem, Washington, DC 20052 USA. [Patridge, Christopher J.] USN, Res Lab, NRC NRL Postdoctoral Res Associate, Washington, DC 20375 USA. [Twigg, Mark E.] USN, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA. RP Love, CT (reprint author), USN, Res Lab, Div Chem, Washington, DC 20375 USA. EM corey.love@nrl.navy.mil FU Office of Naval Research through the Naval Research Laboratory; US Department of Energy; Division of Material Sciences; Division of Chemical Sciences [DE-AC02-98CH10886]; U.S. Naval Research Laboratory FX The authors thank the Office of Naval Research for support of this work through the Naval Research Laboratory. Special thanks to Dr. Michelle Johannes for many helpful technical discussions. The synchrotron measurements were successful due to the help of Dr. Kumi Pandya. The National Synchrotron Light Source is supported by the US Department of Energy, Division of Material Sciences and Division of Chemical Sciences, under contract number DE-AC02-98CH10886. The X11 beamline is supported by the U.S. Naval Research Laboratory and contributions from Participating Research Team (PRT) members. NR 74 TC 14 Z9 14 U1 20 U2 166 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 0013-4651 EI 1945-7111 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PY 2013 VL 160 IS 5 BP A3153 EP A3161 DI 10.1149/2.023305jes PG 9 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA 161OI UT WOS:000320202800026 ER PT S AU Glymond, D Vick, M Pan, MJ Giuliani, F Vandeperre, LJ AF Glymond, D. Vick, M. Pan, M. -J. Giuliani, F. Vandeperre, L. J. BE Singh, D Salem, J Halbig, M Mathur, S TI TAILORING MICROSTRUCTURES IN MULLITE FOR TOUGHNESS ENHANCEMENT SO MECHANICAL PROPERTIES AND PERFORMANCE OF ENGINEERING CERAMICS AND COMPOSITES VII SE Ceramic Engineering and Science Proceedings LA English DT Proceedings Paper CT Mechanical Behavior and Performance of Ceramics and Composites Symposium CY JAN 22-27, 2012 CL Daytona Beach, FL SP Amer Ceram Soc (ACerS), Amer Ceram Soc (ACerS), Engn Ceram Div (ECD) ID TEMPERATURE MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; SOL AB Mullite is considered a promising candidate for future structural applications such as ceramic recuperators in turbo propelled engines, due to its highly favourable properties at high temperatures. In order for it to be viable for structural applications its relatively weak fracture toughness needs to be improved. A reliable way of improving fracture toughness in a range of materials is to tailor the microstructure to contain elongated grains capable of bridging cracks. In this paper, the tailoring of mullite microstructures using a range of processing methods are reported: reactive sintering of mixtures of alumina and silica, sol-gel synthesis of mullite and the use of sol-gel derived additives to enhance the sintering of commercial mullite powders. The difference in morphologies produced as well as the influence on indentation fracture toughness is described. C1 [Glymond, D.; Giuliani, F.; Vandeperre, L. J.] Univ London Imperial Coll Sci Technol & Med, Ctr Adv Struct Ceram, Kensington Campus, London SW7 2AZ, England. [Vick, M.; Giuliani, F.] Imperial Coll London, Dept Mech Engn, London SW7 2AZ, England. [Vick, M.; Pan, M. -J.] Naval Res Lab, Washington, DC 20375 USA. RP Glymond, D (reprint author), Univ London Imperial Coll Sci Technol & Med, Ctr Adv Struct Ceram, Kensington Campus, London SW7 2AZ, England. FU US Office of Naval Research; Office of Naval Research Global [N62909-10-1-7083] FX DG, FG and LV thank the US Office of Naval Research and the Office of Naval Research Global for funding this work through grant N62909-10-1-7083. NR 16 TC 0 Z9 0 U1 0 U2 7 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 0196-6219 BN 978-1-118-21746-7; 978-1-118-20588-4 J9 CERAM ENG SCI PROC PY 2013 BP 143 EP 151 PG 9 WC Materials Science, Ceramics SC Materials Science GA BFH88 UT WOS:000319911600015 ER PT S AU Faucett, DC Wright, J Ayre, M Choi, SR AF Faucett, D. Calvin Wright, Jennifer Ayre, Matthew Choi, Sung R. BE Singh, D Salem, J Halbig, M Mathur, S TI EFFECTS OF TARGET SUPPORTS ON FOREIGN OBJECT DAMAGE IN AN OXIDE/OXIDE CMC SO MECHANICAL PROPERTIES AND PERFORMANCE OF ENGINEERING CERAMICS AND COMPOSITES VII SE Ceramic Engineering and Science Proceedings LA English DT Proceedings Paper CT Mechanical Behavior and Performance of Ceramics and Composites Symposium CY JAN 22-27, 2012 CL Daytona Beach, FL SP Amer Ceram Soc (ACerS), Amer Ceram Soc (ACerS), Engn Ceram Div (ECD) ID CERAMIC-MATRIX COMPOSITE; STEEL BALL PROJECTILES; GRADE SILICON NITRIDES; IMPACT DAMAGE; STRENGTH DEGRADATION; SIC/SIC COMPOSITE; SURFACES; BEHAVIOR; AMBIENT; SPHERES AB Foreign object damage (FOD) aspects of an oxide/oxide ceramic matrix composite (CMC) were determined using spherical steel ball projectiles in impact velocity ranging from 100 to 340 m/s. The oxide/oxide CMC test targets were ballistically impacted at a normal incidence angle while sustained in cantilever support. Surface and subsurface impact damages were in the forms of craters, fiber breakage, delamination, cone cracks, and backside protrusion, typically observed in many CMCs in their ballistic impact responses. Qualitative impact damage was also assessed through post-impact residual strength measurements. Compared to two other types of target supports (full and partial supports), the cantilever support configuration resulted in the greatest impact damage of all the three. The impact damage in cantilever support is believed to have been involved both by quasi-static impression and by stress wave interactions, while the impact damage in partial and full supports was involved mainly by quasi-static dynamic impression. C1 [Faucett, D. Calvin; Wright, Jennifer; Ayre, Matthew; Choi, Sung R.] Naval Air Syst Command, Patuxent River, MD 20670 USA. RP Choi, SR (reprint author), Naval Air Syst Command, Patuxent River, MD 20670 USA. EM sung.choi1@inavy.mil NR 29 TC 0 Z9 0 U1 1 U2 1 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 0196-6219 BN 978-1-118-21746-7; 978-1-118-20588-4 J9 CERAM ENG SCI PROC PY 2013 BP 299 EP 313 PG 15 WC Materials Science, Ceramics SC Materials Science GA BFH88 UT WOS:000319911600029 ER PT S AU Mun, J de Albuquerque, NR Liong, CY Salleh, AR AF Mun, Johnathan de Albuquerque, Nelson R. Liong, Choong-Yeun Salleh, Abdul Razak BE Ishak, A Hashim, I Ismail, ES Nazar, R TI Fuzzy Inference Systems, ASKE, Knowledge Value Added, and Monte Carlo Risk Simulation for Evaluating Intangible Human Capital Investments SO PROCEEDINGS OF THE 20TH NATIONAL SYMPOSIUM ON MATHEMATICAL SCIENCES (SKSM20): RESEARCH IN MATHEMATICAL SCIENCES: A CATALYST FOR CREATIVITY AND INNOVATION, PTS A AND B SE AIP Conference Proceedings LA English DT Proceedings Paper CT 20th National Symposium on Mathematical Sciences CY DEC 18-20, 2012 CL Univ Kebangsaan Malaysia, Sch Math Sci, Putrajaya, MALAYSIA SP Malaysian Math Sci Soc, Univ Kebangsaan Malaysia, Univ Kebangsaan Malaysia, Fac Sci & Technol HO Univ Kebangsaan Malaysia, Sch Math Sci DE Intangible asset; proxy variable; human capital; KVA; fuzzy logic; simulation AB This paper presents the ASKE-Risk method, coupled with Fuzzy Inference Systems, and Monte Carlo Risk Simulation to measure and prioritize Individual Technical Competence of a value chain to assess changes in the human capital of a company. ASKE is an extension of the method Knowledge Value Added, which proposes the use of a proxy variable for measuring the flow of knowledge used in a key process, creating a relationship between the company's financial results and the resources used in each of the business processes. C1 [Mun, Johnathan] USN, Postgrad Sch, Monterey, CA 93943 USA. RP Mun, J (reprint author), USN, Postgrad Sch, 1 Univ Circle, Monterey, CA 93943 USA. NR 17 TC 0 Z9 0 U1 1 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-1150-0 J9 AIP CONF PROC PY 2013 VL 1522 BP 1166 EP 1175 DI 10.1063/1.4801263 PG 10 WC Mathematics, Applied; Physics, Applied SC Mathematics; Physics GA BFI61 UT WOS:000320002700162 ER PT J AU Scarnato, BV Vahidinia, S Richard, DT Kirchstetter, TW AF Scarnato, B. V. Vahidinia, S. Richard, D. T. Kirchstetter, T. W. TI Effects of internal mixing and aggregate morphology on optical properties of black carbon using a discrete dipole approximation model SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID POROUS DUST GRAINS; LIGHT-ABSORPTION; SCATTERING PROPERTIES; AEROSOL PROPERTIES; PLANETARY-ATMOSPHERES; SATELLITE RETRIEVAL; REFLECTED SUNLIGHT; SOOT AEROSOLS; SNOW GRAINS; PARTICLES AB According to recent studies, internal mixing of black carbon (BC) with other aerosol materials in the atmosphere alters its aggregate shape, absorption of solar radiation, and radiative forcing. These mixing state effects are not yet fully understood. In this study, we characterize the morphology and mixing state of bare BC and BC internally mixed with sodium chloride (NaCl) using electron microscopy and examine the sensitivity of optical properties to BC mixing state and aggregate morphology using a discrete dipole approximation model (DDSCAT). DDSCAT is flexible in simulating the geometry and refractive index of particle aggregates. DDSCAT predicts a higher mass absorption coefficient (MAC), lower single scattering albedo (SSA), and higher absorption Angstrom exponent (AAE) for bare BC aggregates that are lacy rather than compact. Predicted values of SSA at 550 nm range between 0.16 and 0.27 for lacy and compact aggregates, respectively, in agreement with reported experimental values of 0.25 +/- 0.05. The variation in absorption with wavelength does not adhere precisely to a power law relationship over the 200 to 1000 nm range. Consequently, AAE values depend on the wavelength region over which they are computed. The MAC of BC (averaged over the 200-1000 nm range) is amplified when internally mixed with NaCl (100-300 nm in radius) by factors ranging from 1.0 for lacy BC aggregates partially immersed in NaCl to 2.2 for compact BC aggregates fully immersed in NaCl. The SSA of BC internally mixed with NaCl is higher than for bare BC and increases with the embedding in the NaCl. Internally mixed BC SSA values decrease in the 200-400 nm wavelength range, a feature also common to the optical properties of dust and organics. Linear polarization features are also predicted in DDSCAT and are dependent on particle size and morphology. This study shows that DDSCAT predicts complex morphology and mixing state dependent aerosol optical properties that have been reported previously and are relevant to radiative transfer, climate modeling, and interpretation of remote sensing measurements. C1 [Scarnato, B. V.; Vahidinia, S.] NASA, Ames Res Ctr, Bay Area Environm Res Inst, Moffett Field, CA 94035 USA. [Vahidinia, S.] NASA, Ames Res Ctr, Oak Ridge Associated Univ, Moffett Field, CA 94035 USA. [Richard, D. T.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Kirchstetter, T. W.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. [Kirchstetter, T. W.] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA. RP Scarnato, BV (reprint author), USN, Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA. EM barbara.v.scarnato@nasa.gov FU Radiation Sciences Program in the Earth Science Division of the Science Mission Directorate, National Aeronautical and Space Administration [NNH09AK98I] FX This research was supported by an appointment to the NASA Postdoctoral Program at Ames Research Center, administrated by Oak Ridge Associated Universities through a contract with NASA, and by the Radiation Sciences Program in the Earth Science Division of the Science Mission Directorate, National Aeronautical and Space Administration via award NNH09AK98I. NR 67 TC 35 Z9 35 U1 8 U2 46 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1680-7316 EI 1680-7324 J9 ATMOS CHEM PHYS JI Atmos. Chem. Phys. PY 2013 VL 13 IS 10 BP 5089 EP 5101 DI 10.5194/acp-13-5089-2013 PG 13 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 155LK UT WOS:000319749400001 ER PT J AU Wei, D Hossain, T Garces, NY Nepal, N Meyer, HM Kirkham, MJ Eddy, CR Edgar, JH AF Wei, D. Hossain, T. Garces, N. Y. Nepal, N. Meyer, H. M., III Kirkham, M. J. Eddy, C. R., Jr. Edgar, J. H. TI Influence of Atomic Layer Deposition Temperatures on TiO2/n-Si MOS Capacitor SO ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY LA English DT Article ID TIO2 FILMS; INTERFACE; GROWTH; SI AB This paper reports on the influence of deposition temperature on the structure, composition, and electrical properties of TiO2 thin films deposited on n-type silicon (100) by plasma-assisted atomic layer deposition (PA-ALD). TiO2 layers similar to 20 nm thick, deposited at temperatures ranging from 100 to 300 degrees C, were investigated. Samples deposited at 200 degrees C and 250 degrees C had the most uniform coverage as determined by atomic force microscopy. The average carbon concentration throughout the oxide layer and at the TiO2/Si interface was lowest at 200 degrees C. Metal oxide semiconductor capacitors (MOSCAPs) were fabricated, and profiled by capacitance-voltage techniques. The sample prepared at 200 degrees C had negligible hysteresis (from a capacitance-voltage plot) and the lowest interface trap density (as extracted using the conductance method). Current-voltage measurements were carried out with top-to-bottom structures. At -2 V gate bias voltage, the smallest leakage current was 1.22 x 10(-5) A/cm(2) for the 100 degrees C deposited sample. (C) 2013 The Electrochemical Society. C1 [Wei, D.; Hossain, T.; Edgar, J. H.] Kansas State Univ, Dept Chem Engn, Manhattan, KS 66506 USA. [Garces, N. Y.; Nepal, N.; Eddy, C. R., Jr.] USN, Elect Sci & Technol Div, Res Lab, Washington, DC 20375 USA. [Meyer, H. M., III; Kirkham, M. J.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. RP Wei, D (reprint author), Kansas State Univ, Dept Chem Engn, Durland Hall, Manhattan, KS 66506 USA. EM edgarjh@ksu.edu RI Kirkham, Melanie/B-6147-2011 OI Kirkham, Melanie/0000-0001-8411-9751 FU Office of Naval Research [N00014-09-1-1160]; U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Program; Office of Naval Research FX We are grateful for the support for this project from the Office of Naval Research, grant N00014-09-1-1160, Paul Maki, program manager. XPS and XRD were conducted through the Oak Ridge National Laboratory's High Temperature Materials Laboratory User Program, sponsored by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Program. Work at the U.S. Naval Research Laboratory is supported by the Office of Naval Research. NR 29 TC 11 Z9 11 U1 1 U2 21 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 2162-8769 J9 ECS J SOLID STATE SC JI ECS J. Solid State Sci. Technol. PY 2013 VL 2 IS 5 BP N110 EP N114 DI 10.1149/2.010305jss PG 5 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 151KA UT WOS:000319458200004 ER PT J AU Chen, CA Berman, EM West, JP Eger, RJ AF Chen, Chung-An Berman, Evan M. West, Jonathan P. Eger, Robert J., III TI Community Commitment in Special Districts SO INTERNATIONAL PUBLIC MANAGEMENT JOURNAL LA English DT Review ID INFRASTRUCTURE INVESTMENT; MUNICIPAL-GOVERNMENT; PERFORMANCE; CAPACITY; RESPONSIVENESS; ORGANIZATIONS; SATISFACTION; INVOLVEMENT; IMPACT; ETHICS AB Special districts now constitute about 42% of all U.S. jurisdictions, yet little is known about them. Some critics are concerned that special districts and their staffs have insufficient community commitment. This study, based on a national survey of senior managers in large special districts, examines activities and programs of special district managers that foster community building and engagement, including correlates of these. Study results reveal that special districts are committed to their communities and several strategies and conditions are associated with increased community commitment, such as jobs that focus on community interactions, service type, and ethics management, as well as, to a lesser extent, graduate degree qualifications and charters that specify the role of managers in promoting the public interest and in relation to the board. C1 [Chen, Chung-An] Nanyang Technol Univ, Singapore 639798, Singapore. [Berman, Evan M.] Victoria Univ Wellington, Sch Govt, Wellington, New Zealand. [West, Jonathan P.] Univ Miami, MPA Program, Coral Gables, FL 33124 USA. [Eger, Robert J., III] USN, Postgrad Sch, Sch Business & Publ Policy, Monterey, CA USA. RP Chen, CA (reprint author), Nanyang Technol Univ, Singapore 639798, Singapore. EM jwest@miami.edu NR 127 TC 0 Z9 0 U1 3 U2 12 PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXFORDSHIRE, ENGLAND SN 1096-7494 EI 1559-3169 J9 INT PUBLIC MANAG J JI Int. Public Manag. J. PD JAN 1 PY 2013 VL 16 IS 1 BP 113 EP 140 DI 10.1080/10967494.2013.796790 PG 28 WC Public Administration SC Public Administration GA 160EB UT WOS:000320098700005 ER PT J AU Yin, P Zhang, QH Zhang, JH Parrish, DA Shreeve, JM AF Yin, Ping Zhang, Qinghua Zhang, Jiaheng Parrish, Damon A. Shreeve, Jean'ne M. TI N-Trinitroethylamino functionalization of nitroimidazoles: a new strategy for high performance energetic materials SO JOURNAL OF MATERIALS CHEMISTRY A LA English DT Article ID THERMAL REARRANGEMENT; PROMISING PROPERTIES; NITRO-DERIVATIVES; CRYSTAL-STRUCTURE; EXPLOSIVES; RDX; HMX; N-NITROBENZIMIDAZOL-2-ONES; 1,4-DINITROIMIDAZOLE; STABILITY AB An N-functionalized strategy, including N-amination and N-trinitroethylamination, was utilized for the synthesis of nitroimidazole-based energetic materials, giving rise to a new family of highly insensitive N-aminonitroimidazoles and oxygen-rich N-trinitroethylaminonitroimidazoles with good to excellent properties. These new energetic materials were fully characterized by IR, H-1, and C-13 NMR, elemental analysis, and some high performance compounds were further confirmed by N-15 NMR (4a, 4d, 6a, 6b, and 6d), as well as single crystal X-ray diffraction (6a and 6b). N-Functionalization of nitroimidazoles not only gives rise to the N-aminonitroimidazoles as impact insensitive and thermally stable materials (IS > 40 J; T-d: 144-308 degrees C), but also provides a series of N-trinitroethylaminoimidazoles, which have favorable densities (1.75-1.84 g cm(-3)), good detonation properties (P: 27.6-35.9 GPa; v(D): 7815-8659 m s(-1)), and moderate thermal stabilities (136-172 degrees C). These properties are better than some known energetic compounds, such as TNT (P: 19.5 GPa; v(D): 6881 m s(-1)) and TATB (P: 31.2 GPa; v(D): 8114 m s(-1)), and are comparable to RDX (P: 35.0 GPa; v(D): 8762 m s(-1)). C1 [Yin, Ping; Zhang, Qinghua; Zhang, Jiaheng; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA. [Parrish, Damon A.] USN, Res Lab, Washington, DC 20375 USA. RP Yin, P (reprint author), Univ Idaho, Dept Chem, Moscow, ID 83844 USA. EM jshreeve@uidhao.edu RI yin, ping/I-7089-2013; Zhang, Qinghua/K-4474-2013; Yin, Ping/A-3699-2014 OI yin, ping/0000-0001-8458-6261; Zhang, Qinghua/0000-0003-3620-4331; Yin, Ping/0000-0002-2870-8225 FU ONR [N00014-12-1-0536, N00014-11-AF-0-0002] FX The authors gratefully acknowledge the support of ONR (N00014-12-1-0536); and (N00014-11-AF-0-0002). NR 91 TC 32 Z9 35 U1 4 U2 48 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2050-7488 EI 2050-7496 J9 J MATER CHEM A JI J. Mater. Chem. A PY 2013 VL 1 IS 25 BP 7500 EP 7510 DI 10.1039/c3ta11356f PG 11 WC Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Energy & Fuels; Materials Science GA 157HI UT WOS:000319886500027 ER PT J AU Eskridge, SL Macera, CA Galarneau, MR Holbrook, TL Woodruff, SI MacGregor, AJ Morton, DJ Shaffer, RA AF Eskridge, Susan L. Macera, Caroline A. Galarneau, Michael R. Holbrook, Troy L. Woodruff, Susan I. MacGregor, Andrew J. Morton, Deborah J. Shaffer, Richard A. TI Combat blast injuries: Injury severity and posttraumatic stress disorder interaction on career outcomes in male servicemembers SO JOURNAL OF REHABILITATION RESEARCH AND DEVELOPMENT LA English DT Article DE blast injury; career performance outcomes; combat blast; functional outcomes; injury severity; mental health; military discharge; Operation Iraqi Freedom; polytrauma; posttraumatic stress disorder ID TRAUMATIC BRAIN-INJURY; OPERATION IRAQI FREEDOM; MILITARY; REGISTRY; SYSTEM; SCORE AB The purpose of this study was to describe career performance outcomes after combat blast injury and to examine the relationship between the injury severity and type of military discharge. A retrospective cohort study of 4,255 male service-members injured in a combat blast as a part of Operation Iraqi Freedom was completed. In the total sample, 37.8% experienced a normal discharge and 8.3% had an early discharge. Of the 2,229 members who had a discharge code, 29.8% experienced a disability discharge. Both early attrition and disability discharge proportions were higher in those with posttraumatic stress disorder (PTSD) than in those without PTSD. There was a significant interaction between PTSD and injury severity in the discharge disability outcome. In those without PTSD, there was a dose-response relationship between injury severity and disability discharge. In those with PTSD, injury severity predicted disability discharge. The relationship between injury severity and disability discharge was less striking in service-members with PTSD than without PTSD. The effect of PTSD and injury severity on career performance outcomes after blast injuries should be factored into outcome planning. C1 [Eskridge, Susan L.; Galarneau, Michael R.; Woodruff, Susan I.; MacGregor, Andrew J.] USN, Hlth Res Ctr, Dept Med Modeling & Simulat, San Diego, CA 92106 USA. [Macera, Caroline A.; Shaffer, Richard A.] USN, Hlth Res Ctr, Dept Def HIV AIDS Prevent Program, San Diego, CA 92106 USA. [Macera, Caroline A.; Shaffer, Richard A.] San Diego State Univ, Grad Sch Publ Hlth, San Diego, CA 92182 USA. [Holbrook, Troy L.] San Diego State Univ, Sch Social Work, San Diego, CA 92182 USA. [Holbrook, Troy L.] EPI SOAR Consulting Inc, San Diego, CA USA. [Morton, Deborah J.] Univ Calif San Diego, Dept Family & Prevent Med, Div Epidemiol, San Diego, CA 92103 USA. RP Eskridge, SL (reprint author), USN, Hlth Res Ctr, 140 Sylvester Rd, San Diego, CA 92106 USA. EM susan.eskridge@med.navy.mil FU U.S. Navy Bureau of Medicine and Surgery under the Wounded, Ill and Injured/Psychological Health/Traumatic Brain Injury Program [60808] FX This material was based on work supported by the U.S. Navy Bureau of Medicine and Surgery under the Wounded, Ill and Injured/Psychological Health/Traumatic Brain Injury Program (Work Unit No. 60808). NR 23 TC 1 Z9 1 U1 2 U2 5 PU JOURNAL REHAB RES & DEV PI BALTIMORE PA DEPT OF VETERANS AFFAIRS REHABIL RES & DEVELOP CTR 103 SOUTH GAY STREET, BALTIMORE, MD 21202-4051 USA SN 0748-7711 J9 J REHABIL RES DEV JI J. Rehabil. Res. Dev. PY 2013 VL 50 IS 1 BP 7 EP 15 DI 10.1682/JRRD.2012.01.0004 PG 9 WC Rehabilitation SC Rehabilitation GA 149FE UT WOS:000319303600010 PM 23516079 ER PT J AU Yao, KPC Kwabi, DG Quinlan, RA Mansour, AN Grimaud, A Lee, YL Lu, YC Shao-Horn, Y AF Yao, Koffi P. C. Kwabi, David G. Quinlan, Ronald A. Mansour, Azzam N. Grimaud, Alexis Lee, Yueh-Lin Lu, Yi-Chun Shao-Horn, Yang TI Thermal Stability of Li2O2 and Li2O for Li-Air Batteries: In Situ XRD and XPS Studies SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID RECHARGEABLE LI-O-2 BATTERIES; AUGMENTED-WAVE METHOD; LITHIUM PEROXIDE; ELECTRONIC-STRUCTURE; OXYGEN; OXIDE; TEMPERATURE; DISCHARGE; METALS AB Understanding the thermal stability of major reaction products, Li2O2 (space group P6(3)/mmc) and Li2O (space group Fm (3) over barm) is critical to improve the safety characteristics of Li-air batteries. The changes in the crystal structure and surface chemistry of Li2O2 and Li2O were examined as a function of temperature via in situ X-ray diffraction (XRD) and in situ X-ray photoelectron spectroscopy (XPS). Significant decreases in the lattice parameters and the c/a ratio of Li2O2 were found at 280 degrees C and higher. These structural changes can be attributed to the transformation of Li2O2 to Li2O2-delta, which is supported by density functional theory calculations. Upon further heating to 700 degrees C, a lithium-deficient Li2-delta O phase appeared at 300 degrees C and gradually became stoichiometric upon further heating to similar to 550 degrees C. XPS measurements of Li2O2 revealed that Li2O appeared on the surface starting at 250 degrees C, which is in agreement with the onset temperature of phase transformation as detected by XRD. In addition, the growth of Li2CO3 on the surface was found at 250 degrees C, which can be attributed to chemical reactions between Li2O2/Li2O and carbon-containing species (e.g. hydrocarbons) present in the XPS chamber. This finding highlights the challenges of developing stable carbon-based oxygen electrode for Li-air batteries. (C) 2013 The Electrochemical Society. All rights reserved. C1 [Yao, Koffi P. C.; Kwabi, David G.; Shao-Horn, Yang] MIT, Dept Mech Engn, Cambridge, MA 02139 USA. [Yao, Koffi P. C.; Kwabi, David G.; Grimaud, Alexis; Lee, Yueh-Lin; Lu, Yi-Chun; Shao-Horn, Yang] MIT, Electrochem Energy Lab, Cambridge, MA 02139 USA. [Quinlan, Ronald A.; Mansour, Azzam N.] USN, Ctr Surface Warfare, Carderock Div, West Bethesda, MD 20817 USA. [Lu, Yi-Chun; Shao-Horn, Yang] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA. RP Yao, KPC (reprint author), MIT, Dept Mech Engn, Cambridge, MA 02139 USA. EM shaohorn@mit.edu RI Lu, Yi-Chun/J-1841-2015; LEE, YUEH-LIN/F-6274-2011; OI Lu, Yi-Chun/0000-0003-1607-1615; LEE, YUEH-LIN/0000-0003-2477-6412; Quinlan, Ronald/0000-0003-0949-8645; Yao, Koffi/0000-0003-4310-4347 FU Assistant Secretary for Energy Efficiency and Renewable Energy, Office of FreedomCAR and Vehicle Technologies of the DOE [DE-AC03-76SF00098]; U.S. Department of Energy's U.S.-China Clean Energy Research Center for Clean Vehicles [DE-PI0000012]; Office of Naval Research (ONR) [N00014-12-1-0096, N00014-12-WX20818]; Ford-MET Alliance; TOTAL Graduate Student Fellowship FX This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of FreedomCAR and Vehicle Technologies of the DOE (DE-AC03-76SF00098 with LBNL), U.S. Department of Energy's U.S.-China Clean Energy Research Center for Clean Vehicles (Grant DE-PI0000012), Office of Naval Research (ONR) under contract numbers N00014-12-1-0096 (MIT) and N00014-12-WX20818 (NSWCCD), and the Ford-MET Alliance D.G.K. acknowledges a TOTAL Graduate Student Fellowship. NR 50 TC 57 Z9 57 U1 14 U2 176 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 0013-4651 EI 1945-7111 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PY 2013 VL 160 IS 6 BP A824 EP A831 DI 10.1149/2.069306jes PG 8 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA 159VF UT WOS:000320074700010 ER PT S AU Raatikainen, T Nenes, A Seinfeld, JH Morales, R Moore, RH Lathem, TL Lance, S Padro, LT Lin, JJ Cerully, KM Bougiatioti, A Cozic, J Ruehl, C Chuang, PY Anderson, BE Flagan, RC Jonsson, H Mihalopoulos, N Smith, JN AF Raatikainen, T. Nenes, A. Seinfeld, J. H. Morales, R. Moore, R. H. Lathem, T. L. Lance, S. Padro, L. T. Lin, J. J. Cerully, K. M. Bougiatioti, A. Cozic, J. Ruehl, C. Chuang, P. Y. Anderson, B. E. Flagan, R. C. Jonsson, H. Mihalopoulos, N. Smith, J. N. BE DeMott, PJ ODowd, CD TI Constraining the Water Vapor Uptake Coefficient in Ambient Cloud Droplet Formation SO NUCLEATION AND ATMOSPHERIC AEROSOLS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 19th International Conference on Nucleation and Atmospheric Aerosols (ICNAA) CY JUN 23-28, 2013 CL Colorado State Univ, Ctr Arts, Fort Collins, CO SP Comm Nucleat & Atmospher Aerosols (CNAA), Int Commiss Clouds & Precipitat (ICCP), Int Assoc Meteorol & Atmospher Sci (IAMAS), Int Union Geodesy & Geophys (IUGG), Natl Sci Fdn (NSF), Colorado State Univ, Dept Atmospher Sci, Aerodyne Res Inc, Droplet Measurement Technologies, TSI Inc HO Colorado State Univ, Ctr Arts DE Water uptake; kinetics; droplet formation ID SIZE-RESOLVED CCN; ACTIVATION KINETICS; GROWTH-KINETICS; HYGROSCOPICITY; AEROSOL; ENVIRONMENT; CHAMBER AB Cloud droplet formation depends on the condensation of water vapor on ambient aerosols, the rate of which is strongly affected by the condensation (or mass accommodation) coefficient, alpha(c). Estimates of alpha(c) for droplet growth from activation of ambient particles vary considerably and represent a critical source of uncertainty in estimates of global cloud droplet distributions and the aerosol indirect forcing of climate. An analysis of ten globally relevant data sets of cloud condensation nuclei is used to constrain alpha(c), and find that rapid activation kinetics (alpha(c) > 0.1) is uniformly prevalent. This means that uncertainty in water vapor accommodation on droplets is less than previously thought and resolves a long-standing issue in cloud physics. C1 [Raatikainen, T.; Nenes, A.; Morales, R.; Lathem, T. L.; Lance, S.; Lin, J. J.; Bougiatioti, A.] Georgia Inst Technol, Dept Earth & Atmospher Sci, Atlanta, GA 30332 USA. [Raatikainen, T.] Finnish Meteorol Inst, FI-00101 Helsinki, Finland. [Nenes, A.; Moore, R. H.; Padro, L. T.; Cerully, K. M.] Georgia Inst Technol, Dept Chem & Biomol Engn, Atlanta, GA 30332 USA. [Nenes, A.; Mihalopoulos, N.] Inst Chem Engn & High Temp Chem Proc, Fdn Res & Technol, Patras GR-71110, Greece. [Seinfeld, J. H.; Flagan, R. C.] CALTECH, Dept Chem Engn, Pasadena, CA 91106 USA. [Seinfeld, J. H.; Flagan, R. C.] CALTECH, Dept Environm Sci & Engn, Pasadena, CA 91106 USA. [Moore, R. H.; Anderson, B. E.] NASA, Langley Res Ctr, Hampton, VA 23681 USA. [Lathem, T. L.] Phillips Res Ctr 66, Bartlesville, OK 74003 USA. [Lance, S.] Natl Ctr Atmospher Res, Div Atmospher Chem, Boulder, CO 80305 USA. [Lance, S.] SPEC Inc, Boulder, CO 8030 USA. [Padro, L. T.] Tufts Univ, Dept Civil & Environm Engn, Medford, MA 02155 USA. [Bougiatioti, A.] Univ Crete, Dept Chem, Iraklion GR-71003, Greece. [Cozic, J.] Natl Ocean & Atmospher Adm, Div Chem Sci, Earth Syst Res Lab, Boulder, CO 80305 USA. [Cozic, J.] Lab Glaciol & Geophys Environm, F-38402 Grenoble, France. [Ruehl, C.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Chuang, P. Y.] Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA. [Jonsson, H.] US Navy, Postgrad Sch, Monterey, CA 93943 USA. RP Raatikainen, T (reprint author), Georgia Inst Technol, Dept Earth & Atmospher Sci, Atlanta, GA 30332 USA. RI Mihalopoulos, Nikolaos/H-5327-2016 OI Mihalopoulos, Nikolaos/0000-0002-1282-0896 FU Finnish Cultural Foundation; Georgia Tech Institute Fellowships; NCAR ASP; NASA; DOE Global Change Education Fellowship; NASA ESS Fellowships; NASA Postdoctoral Fellowship; NSF; DOE; Electric Power Research Institute; NSF-CAREER; NOAA FX We acknowledge support from the Finnish Cultural Foundation, Georgia Tech Institute Fellowships, a NCAR ASP Graduate Fellowship, the NASA Graduate Student Researchers Program, a DOE Global Change Education Fellowship, NASA ESS Fellowships, a NASA Postdoctoral Fellowship, and a NSF Fellowship. Funding from the DOE, the Electric Power Research Institute, a NSF-CAREER award, NOAA and NASA is also acknowledged. We thank Dr. Xiaohong Liu for advice on using the CAM 5, Charles Brock from the NOAA Earth System Research Laboratory and the NASA Langley LARGE research team. NR 18 TC 0 Z9 0 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-1152-4 J9 AIP CONF PROC PY 2013 VL 1527 BP 812 EP 816 DI 10.1063/1.4803395 PG 5 WC Physics, Applied SC Physics GA BFG32 UT WOS:000319766400203 ER PT J AU Cash, JJ Davis, MC Ford, MD Groshens, TJ Guenthner, AJ Harvey, BG Lamison, KR Mabry, JM Meylemans, HA Reams, JT Sahagun, CM AF Cash, Jessica J. Davis, Matthew C. Ford, Michael D. Groshens, Thomas J. Guenthner, Andrew J. Harvey, Benjamin G. Lamison, Kevin R. Mabry, Joseph M. Meylemans, Heather A. Reams, Josiah T. Sahagun, Christopher M. TI High T-g thermosetting resins from resveratrol SO POLYMER CHEMISTRY LA English DT Article ID GLASS-TRANSITION TEMPERATURE; CYANATE ESTER RESIN; POLYCYANURATE NETWORKS; RENEWABLE RESOURCES; THERMAL-STABILITY; CURE KINETICS; POLYMERS; FLEXIBILITY; DEGRADATION; MECHANISMS AB The tricyanate esters of the natural product resveratrol (1) and dihydroresveratrol (2) were synthesized and subjected to thermal curing which gave polycyanurate network polymers which exhibited glass transition temperatures of >340 degrees C and 334 degrees C, respectively. Thermal decomposition temperatures of 412 degrees C and 403 degrees C for polycyanurates of 1 and 2, respectively, were typical of this class. However, char yields (600 degrees C) of 71% and 66% for 1 and 2, respectively, were more than double that from the polycyanurate of bisphenol A dicyanate (25%). C1 [Cash, Jessica J.; Davis, Matthew C.; Ford, Michael D.; Groshens, Thomas J.; Harvey, Benjamin G.; Meylemans, Heather A.] USN, Air Warfare Ctr, Chem & Mat Div, Michelson Lab, China Lake, CA 93555 USA. [Guenthner, Andrew J.; Lamison, Kevin R.; Mabry, Joseph M.; Reams, Josiah T.; Sahagun, Christopher M.] USAF, Res Lab, Aerosp Syst Directorate Edwards AFB, Edwards AFB, CA 93524 USA. RP Davis, MC (reprint author), USN, Air Warfare Ctr, Chem & Mat Div, Michelson Lab, China Lake, CA 93555 USA. EM matthew.davis@navy.mil; andrew.guenthner@edwards.af.mil FU Strategic Environmental Research and Development Program; Office of Naval Research; Air Force Office of Scientific Research, in part through the National Research Council's Research Associateship Program FX This research was supported by the Strategic Environmental Research and Development Program, the Office of Naval Research, and the Air Force Office of Scientific Research, in part through the National Research Council's Research Associateship Program (CMS). Thanks to Ann M. Moorehead, Mary E. Ray and Cynthia M. Kitchens of the NAWC Technical Library (China Lake) for collecting several of the references. NR 86 TC 22 Z9 22 U1 0 U2 20 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1759-9954 J9 POLYM CHEM-UK JI Polym. Chem. PY 2013 VL 4 IS 13 BP 3859 EP 3865 DI 10.1039/c3py00438d PG 7 WC Polymer Science SC Polymer Science GA 157HS UT WOS:000319887700026 ER PT S AU Kim, CS Kim, M Abell, J Bewley, WW Merritt, CD Canedy, CL Vurgaftman, I Meyer, JR AF Kim, C. S. Kim, M. Abell, J. Bewley, W. W. Merritt, C. D. Canedy, C. L. Vurgaftman, I. Meyer, J. R. BE Razeghi, M Tournie, E Brown, GJ TI Mid-IR Distributed-Feedback Interband Cascade Lasers SO QUANTUM SENSING AND NANOPHOTONIC DEVICES X SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Quantum Sensing and Nanophotonic Devices X CY FEB 03-07, 2013 CL San Francisco, CA SP SPIE DE Input power; interband cascade laser; distributed-feedback laser; mid-infrared; threshold current density; chemical sensing ID ROOM-TEMPERATURE AB We discuss two distinct approaches to realizing distributed-feedback (DFB) interband cascade lasers (ICLs) for emission in the mid-IR. In the top-grating approach, the first-order gratings are produced by patterning high-index germanium layers on top of narrow ridges with relatively thin top claddings. One 7-mu m-wide device emitting at lambda = 3.8 mu m generated over 27 mW of cw single-mode output at 40 degrees C, with a side-mode-suppression ratio >30 dB, while at 80 degrees C it still emitted >1 mW. At 20 mu C, a second device lased in a single spectral mode with <100 mW of drive power. The tuning range was 21.5 nm with temperature and 10 nm with current. The corrugated-sidewall approach relies on a fourth-order grating defined by optical lithography and etched into the sidewalls of the laser ridge. For a 13-mu m-wide ICL ridge emitting at lambda = 3.6 mu m, the maximum power at T = 25 degrees C was 55 mW, and at 40 degrees C the device still produced 11 mW. We compare the physical requirements and performance characteristics for the two DFB classes and conclude that top-grating DFBs generally exhibit greater stability and reproducibility, although the efficiency is reduced by extra loss induced by modal overlap with the top metallization. C1 [Kim, C. S.; Abell, J.; Bewley, W. W.; Merritt, C. D.; Canedy, C. L.; Vurgaftman, I.; Meyer, J. R.] USN, Res Lab, Washington, DC 20375 USA. RP Kim, CS (reprint author), USN, Res Lab, Code 5613, Washington, DC 20375 USA. EM MWIR_lasers@nrl.navy.mil NR 15 TC 1 Z9 1 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 978-0-8194-9400-9 J9 PROC SPIE PY 2013 VL 8631 AR UNSP 86311O DI 10.1117/12.2004163 PG 8 WC Nanoscience & Nanotechnology; Optics; Spectroscopy SC Science & Technology - Other Topics; Optics; Spectroscopy GA BFG30 UT WOS:000319759100036 ER PT J AU Johnson, BJ Leska, IA Melde, BJ Taft, JR AF Johnson, Brandy J. Leska, Iwona A. Melde, Brian J. Taft, Jenna R. TI Self-reporting materials: Dual use for porphyrin-embedded sorbents SO SENSORS AND ACTUATORS B-CHEMICAL LA English DT Article DE Macroporous; Mesoporous; Organosilica; Porphyrin; Air purification fluorescence; Reflectance; Detection ID SILICATE MATERIALS; MOLECULAR-COMPLEXES; REMOVAL; FILMS; CATALYSIS; PHASE AB A previous effort demonstrated the utility of porphyrin functionalized organosilicate sorbents in the removal of phosgene. The current study sought to characterize the spectrophotometric response of the sorbents during their application to determine the potential for dual use in both removal of phosgene and reporting on phosgene exposure. The effort is intended as a first step toward using the materials for self-reporting or residual life indication. An ethane bridged silica was functionalized using deuteroporphyrin IX 2,4 bis- ethylene glycol. Several metalloporphyrin variants were generated based on this porphyrin functionalized sorbent, and fluorescence characteristics were evaluated in the prior to and following exposure to phosgene. Reflectance characteristics and changes upon target exposure were also evaluated. Cu, Mg, and Zn sorbents showed the most significant changes upon exposure to phosgene. The reflectance characteristics of these sorbents were evaluated across a range of loading levels for sorbent columns to the point of complete target breakthrough. The results indicate the possibility for reflectance or visual inspection based end-of-life indication for these sorbents. Published by Elsevier B.V. C1 [Johnson, Brandy J.; Melde, Brian J.] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. [Leska, Iwona A.; Taft, Jenna R.] NOVA Res Inc, Alexandria, VA 22308 USA. RP Johnson, BJ (reprint author), USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. EM brandy.white@nrl.navy.mil RI Johnson, Brandy/B-3462-2008 OI Johnson, Brandy/0000-0002-3637-0631 FU U.S. Defense Threat Reduction Agency [BA08PRO015] FX The authors would like to thank Dr. A.P. Malanoski for his invaluable insights. This research was sponsored by the U.S. Defense Threat Reduction Agency's Chemical & Biological Technologies Directorate (DTRA-CB) Physical Science & Technology Division under the topic Protection and Hazard Mitigation (BA08PRO015). We applied the SDC approach ("sequence-determines-credit") for determining the sequence of authors [1]. The views expressed here are those of the authors and do not represent those of the U. S. Navy, the U.S. Department of Defense, or the U.S. Government. NR 31 TC 1 Z9 1 U1 3 U2 10 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-4005 J9 SENSOR ACTUAT B-CHEM JI Sens. Actuator B-Chem. PD JAN PY 2013 VL 176 BP 399 EP 404 DI 10.1016/j.snb.2012.10.035 PG 6 WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation SC Chemistry; Electrochemistry; Instruments & Instrumentation GA 157AM UT WOS:000319867500056 ER PT S AU Nagareddy, VK Hernandez, SC Wheeler, VD Nyakiti, LO Myers-Ward, RL Eddy, CR Goss, JP Wright, NG Walton, SG Gaskill, DK Horsfall, AB AF Nagareddy, V. K. Hernandez, S. C. Wheeler, V. D. Nyakiti, L. O. Myers-Ward, R. L. Eddy, C. R., Jr. Goss, J. P. Wright, N. G. Walton, S. G. Gaskill, D. K. Horsfall, A. B. BE Lebedev, AA Davydov, SY Ivanov, PA Levinshtein, ME TI High Temperature Stability of Oxygen Functionalized Epitaxial Graphene/Metal Contact Interfaces SO SILICON CARBIDE AND RELATED MATERIALS 2012 SE Materials Science Forum LA English DT Proceedings Paper CT 9th European Conference on Silicon Carbide and Related Materials (ECSCRM 2012) CY SEP 02-06, 2012 CL Saint Petersburg, RUSSIA SP Nitride Crystals Grp, CREE Inc, Svetlana JSC, Russian Fdn Basic Res, Off Naval Res, Epitaxial Technol Ctr, LPE, Perfect Crystals, AIXTRON, Gen Elect, Dow Corn, Govt St Petersburg DE Epitaxial graphene; Functionalization; Oxygen; Metal contacts; Contact resistance AB The electrical characteristics of oxygen functionalized epitaxial graphene and Ti/Au metal contact interfaces were systematically investigated as a function of temperature. As the temperature was increased from 300 K to 673 K, the contact resistance and the sheet resistance decreased by 75% and 33%, respectively. The resistance of oxygen functionalized graphene vs temperature exhibited Arrhenius type behavior with activation energy of 38 meV. The results showed no hysteresis effects in resistance measurements over the temperatures studied here, suggesting the contact interfaces remain stable at high temperatures. C1 [Nagareddy, V. K.; Goss, J. P.; Wright, N. G.; Horsfall, A. B.] Newcastle Univ, Sch Elect & Elect Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England. [Hernandez, S. C.; Wheeler, V. D.; Nyakiti, L. O.; Myers-Ward, R. L.; Eddy, C. R., Jr.; Walton, S. G.; Gaskill, D. K.] US Naval Res Lab, Washington, DC USA. RP Nagareddy, VK (reprint author), Newcastle Univ, Sch Elect & Elect Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England. EM v.k.nagareddy@ncl.ac.uk; sandra.hangarter.ctr@nrl.navy.mil; virginia.wheeler@nrl.navy.mil; luke.nyakiti.ctr@nrl.navy.mil; rachael.myers-ward@nrl.navy.mil; chip.eddy@nrl.navy.mil; j.p.goss@ncl.ac.uk; n.g.wright@ncl.ac.uk; scott.walton@nrl.navy.mil; kurt.gaskill@nrl.navy.mil; alton.horsfall@ncl.ac.uk RI Hernandez, Sandra/C-6724-2013; Wright, Nick/O-1092-2013; Nagareddy, Karthik/F-3380-2014; OI Nagareddy, Karthik/0000-0002-8765-3834; Wright, Nicholas/0000-0003-3169-4159 FU BAE Systems through DHPA scheme; NRC. V.D.W; ASEE; EPSRC, UK; NRL Base Program FX V.K.N acknowledges support from BAE Systems through DHPA scheme. S.C.H is grateful for postdoctoral support from NRC. V.D.W and L.O.N are grateful for postdoctoral support from ASEE. Portions of this work were supported by the EPSRC, UK and the NRL Base Program. NR 11 TC 0 Z9 0 U1 0 U2 13 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 0255-5476 J9 MATER SCI FORUM PY 2013 VL 740-742 BP 145 EP + DI 10.4028/www.scientific.net/MSF.740-742.145 PG 2 WC Crystallography; Materials Science, Multidisciplinary SC Crystallography; Materials Science GA BFG56 UT WOS:000319785500035 ER PT S AU Veliadis, V Snook, M Hearne, H Nechay, B Woodruff, S Lavoie, C Kirby, C Imhoff, E White, J Davis, S AF Veliadis, V. Snook, M. Hearne, H. Nechay, B. Woodruff, S. Lavoie, C. Kirby, C. Imhoff, E. White, J. Davis, S. BE Lebedev, AA Davydov, SY Ivanov, PA Levinshtein, ME TI Process Tolerant Single Photolithography/Implantation 120-Zone Junction Termination Extension SO SILICON CARBIDE AND RELATED MATERIALS 2012 SE Materials Science Forum LA English DT Proceedings Paper CT 9th European Conference on Silicon Carbide and Related Materials (ECSCRM 2012) CY SEP 02-06, 2012 CL Saint Petersburg, RUSSIA SP Nitride Crystals Grp, CREE Inc, Svetlana JSC, Russian Fdn Basic Res, Off Naval Res, Epitaxial Technol Ctr, LPE, Perfect Crystals, AIXTRON, Gen Elect, Dow Corn, Govt St Petersburg DE Junction termination extension; JTE; multiple-zone JTE; edge termination; single implant; single photolithography; blocking voltage; high voltage; diode; silicon carbide; SiC; PiN ID VOLTAGE SIC DEVICES AB The multiple-zone junction termination extension (MJTE) is a widely used SiC edge termination technique that reduces sensitivity to implantation dose variations. It is typically implemented in multiple lithography and implantation events. To reduce process complexity, cycle time, and cost, a single photolithography/implantation (P/I) MJTE technique was developed and diodes with 3-zone and 120-zone JTEs were fabricated on the same wafer. Here, the process tolerance of the single (P/I) MJTE technique is evaluated by performing CCD monitored blocking voltage measurements on diodes from the same wafer with the 3-zone and 120-zone single (P/I) JTE. The 3-zone JTE diodes exhibited catastrophic localized avalanches at the interface between the 2nd and 3rd zones due to abrupt zone transitions. Diodes with the smooth transitioning 120-zone JTE exhibited no CCD detectable avalanches in their JTE regions up to the testing limit of 12 kV. Under thick dielectric (deposited for on-wafer diode interconnection), diodes with the single P/I 3-zone JTE failed due to significant loss of high-voltage capability, while their 120-zone JTE diode counterparts were minimally affected. Overall, the single (P/I) 120-zone JTE provides a process-tolerant and robust single P/I edge termination at no additional fabrication labor. C1 [Veliadis, V.; Snook, M.; Hearne, H.; Nechay, B.; Woodruff, S.; Lavoie, C.; Kirby, C.] Northrop Grumman Elect Syst, Linthicum, MD 21090 USA. [Imhoff, E.] US Naval Acad, Res Lab, Washington, DC 20375 USA. [White, J.; Davis, S.] US Army, TARDEC, Warren, MI 48397 USA. RP Veliadis, V (reprint author), Northrop Grumman Elect Syst, Linthicum, MD 21090 USA. EM victor.veliadis@ngc.com; eugene.imhoff@nrl.navy.mil; stuart.m.davis.civ@mail.mil NR 6 TC 1 Z9 1 U1 0 U2 3 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 0255-5476 J9 MATER SCI FORUM PY 2013 VL 740-742 BP 855 EP + DI 10.4028/www.scientific.net/MSF.740-742.855 PG 2 WC Crystallography; Materials Science, Multidisciplinary SC Crystallography; Materials Science GA BFG56 UT WOS:000319785500204 ER PT B AU Lee, Y Ko, H Han, DK AF Lee, Younghyun Ko, Hanseok Han, David K. GP IEEE TI Acoustic Signal Based Abnormal Event Detection System with Multiclass Adaboost SO 2013 IEEE INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS (ICCE) SE International Conference on Consumer Electronics LA English DT Proceedings Paper CT IEEE International Conference on Consumer Electronics (ICCE) CY JAN 11-14, 2013 CL Las Vegas, NV SP IEEE, Consumer Elect Soc - CE AB This paper addresses the problem of abnormal acoustic event detection in indoor security systems. We propose a multiclass Adaboost based acoustic context classifier for performance and speed improvements over the conventional and prominent GMM based classifiers. C1 [Lee, Younghyun] Korea Univ, Dept Visual Informat Proc, Seoul, South Korea. [Han, David K.] Off Naval Res, Arlington, VA 22202 USA. [Ko, Hanseok] Korea Univ, Sch Elect Engn, Seoul, South Korea. RP Lee, Y (reprint author), Korea Univ, Dept Visual Informat Proc, Seoul, South Korea. FU Seoul RBD Program [(WR080951)] FX This research was supported by Seoul R&BD Program (WR080951) 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 BN 978-1-4673-1363-6; 978-1-4673-1361-2 J9 IEEE ICCE PY 2013 BP 322 EP + PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BEZ07 UT WOS:000318797800143 ER PT J AU Gupta, L Kota, S Molfese, DL Vaidyanathan, R AF Gupta, Lalit Kota, Srinivas Molfese, Dennis L. Vaidyanathan, Ravi TI Pairwise diversity ranking of polychotomous features for ensemble physiological signal classifiers SO PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART H-JOURNAL OF ENGINEERING IN MEDICINE LA English DT Article DE Classifier fusion; data fusion; diversity; ensemble classifiers; event-related potentials ID MULTISENSOR DATA FUSION AB It is well known that fusion classifiers for physiological signal classification with diverse components (classifiers or data sets) outperform those with less diverse components. Determining component diversity, therefore, is of the utmost importance in the design of fusion classifiers that are often employed in clinical diagnostic and numerous other pattern recognition problems. In this article, a new pairwise diversity-based ranking strategy is introduced to select a subset of ensemble components, which when combined will be more diverse than any other component subset of the same size. The strategy is unified in the sense that the components can be classifiers or data sets. Moreover, the classifiers and data sets can be polychotomous. Classifier-fusion and data-fusion systems are formulated based on the diversity-based selection strategy, and the application of the two fusion strategies are demonstrated through the classification of multichannel event-related potentials. It is observed that for both classifier and data fusion, the classification accuracy tends to increase/decrease when the diversity of the component ensemble increases/decreases. For the four sets of 14-channel event-related potentials considered, it is shown that data fusion outperforms classifier fusion. Furthermore, it is demonstrated that the combination of data components that yield the best performance, in a relative sense, can be determined through the diversity-based selection strategy. C1 [Gupta, Lalit] So Illinois Univ, Dept Elect & Comp Engn, Carbondale, IL 62901 USA. [Kota, Srinivas; Molfese, Dennis L.] Univ Nebraska, Dept Psychol, Lincoln, NE 68588 USA. [Vaidyanathan, Ravi] Univ London Imperial Coll Sci Technol & Med, Dept Mech Engn, London SW7 2AZ, England. [Vaidyanathan, Ravi] USN, Dept Syst Engn, Postgrad Sch, Monterey, CA USA. RP Vaidyanathan, R (reprint author), Univ London Imperial Coll Sci Technol & Med, Dept Mech Engn, Rm 709,South Kensington Campus, London SW7 2AZ, England. EM r.vaidyanathan@imperial.ac.uk FU US National Institutes of Health (NIH) [NIH R01EB007684, NIH R43HD062072]; UK Engineering and Physical Sciences Research Council (EPSRC) [EP/F01869X, PS6571] FX This work was supported in part by grants NIH R01EB007684 and NIH R43HD062072 from the US National Institutes of Health (NIH) and grants EP/F01869X and PS6571 from the UK Engineering and Physical Sciences Research Council (EPSRC). NR 15 TC 0 Z9 0 U1 0 U2 1 PU SAGE PUBLICATIONS LTD PI LONDON PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND SN 0954-4119 J9 P I MECH ENG H JI Proc. Inst. Mech. Eng. Part H-J. Eng. Med. PY 2013 VL 227 IS H6 BP 655 EP 662 DI 10.1177/0954411913480621 PG 8 WC Engineering, Biomedical SC Engineering GA 145GM UT WOS:000319003200005 PM 23636746 ER PT S AU Petry, FE Yager, RR AF Petry, Frederick E. Yager, Ronald R. BE Yager, RR Abbasov, AM Reformat, MZ Shahbazova, SN TI Using Alternative Contexts in Concept Hierarchies to Inspire Creativity SO SOFT COMPUTING: STATE OF THE ART THEORY AND NOVEL APPLICATIONS SE Studies in Fuzziness and Soft Computing LA English DT Article; Book Chapter DE creativity; concept hierarchies; congurence; specificity; partitions ID DATABASES AB In this paper we examine issues involving measures of creativity for data generalization using hierarchies. In particular we consider consensus and specificity measures for the partitions that result using crisp concept hierarchies. We note that fuzzy hierarchies do not produce partitions of data in general so some approaches to considering "partitionness' is described. C1 [Petry, Frederick E.] USN, MC&G Code 74405, Res Lab, Stennis Space Ctr, MS 39529 USA. [Yager, Ronald R.] Iona Coll, Inst Machine Intelligence, New Rochelle, NY 10801 USA. RP Petry, FE (reprint author), USN, MC&G Code 74405, Res Lab, Stennis Space Ctr, MS 39529 USA. EM fpetry@nrlssc.navy.mil; yager@panix.com NR 24 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 1434-9922 BN 978-3-642-34921-8 J9 STUD FUZZ SOFT COMP PY 2013 VL 291 BP 13 EP 23 DI 10.1007/978-3-642-34922-5_2 D2 10.1007/978-3-642-34922-5 PG 11 WC Computer Science, Artificial Intelligence; Computer Science, Interdisciplinary Applications SC Computer Science GA BEP58 UT WOS:000317631300002 ER PT J AU Shi, Y Zhang, J Reid, JS Hyer, EJ Hsu, NC AF Shi, Y. Zhang, J. Reid, J. S. Hyer, E. J. Hsu, N. C. TI Critical evaluation of the MODIS Deep Blue aerosol optical depth product for data assimilation over North Africa SO ATMOSPHERIC MEASUREMENT TECHNIQUES LA English DT Article ID RETRIEVALS; OCEAN; AERONET; LAND AB Moderate Resolution Imaging Spectroradiometer (MODIS) Deep Blue (DB) collection 5.1 (c5.1) aerosol optical depth (AOD) data were analyzed and evaluated for the first time from an independent research group using eight years of Terra (2000-2007) and Aqua (2002-2009). Uncertainties in the DB AOD were identified and studied, and our results show that the performance of DB c5.1 is strongly dependent on surface albedo and aerosol microphysics. Using data with only "very good" quality assurance, the root-mean-square error (RMSE) of the DB Terra (Aqua) AOD is 0.24 (0.19) when validated against AERONET. Expanding upon the uncertainty analysis, the potential of applying the DB products for aerosol assimilation was explored. Empirical corrections and quality assurance procedures were developed for North Africa and the Arabian Peninsula to create a data assimilation (DA)-quality DB product. After applying those procedures, the RMSE is reduced by 18.1% (18.2 %) for Terra (Aqua) DB data. Prognostic error models of 0.069 + 0.175 x AOD(Terra_DB) with no noise floor and 0.048 + 0.182 x AOD(Aqua_DB) with a noise floor of 0.104 were found for DA-quality Terra and Aqua DB data, respectively. These procedures were also applied to two months of DB collection 6 (c6) AOD data, and reductions in RMSE were found, indicating that the algorithms developed for c5.1 data are applicable to c6 data to some extent. C1 [Shi, Y.; Zhang, J.] Univ N Dakota, Dept Atmospher Sci, Grand Forks, ND 58201 USA. [Reid, J. S.; Hyer, E. J.] USN, Res Lab, Marine Meteorol Div, Monterey, CA USA. [Hsu, N. C.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. RP Shi, Y (reprint author), Univ N Dakota, Dept Atmospher Sci, Grand Forks, ND 58201 USA. EM yingxi.shi@my.und.edu RI Hsu, N. Christina/H-3420-2013; Reid, Jeffrey/B-7633-2014; Hyer, Edward/E-7734-2011 OI Reid, Jeffrey/0000-0002-5147-7955; Hyer, Edward/0000-0001-8636-2026 FU Office of Naval Research [322]; NASA Interdisciplinary Science Program; NASA Earth and Space Science Fellowship Program FX This research was funded by the Office of Naval Research Code 322 and the NASA Interdisciplinary Science Program. Yingxi Shi is funded by the NASA Earth and Space Science Fellowship Program. We acknowledge and appreciate the AERONET program and their contributing principal investigators and their staff for establishing and maintaining the coastal sites used in this investigation. We also appreciate the MODIS Deep Blue team, who provided us the preliminary MODIS DB c6 data. NR 27 TC 38 Z9 38 U1 3 U2 21 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1867-1381 EI 1867-8548 J9 ATMOS MEAS TECH JI Atmos. Meas. Tech. PY 2013 VL 6 IS 4 BP 949 EP 969 DI 10.5194/amt-6-949-2013 PG 21 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 137IM UT WOS:000318429000007 ER PT J AU Del Re, J Moore, MH Ratna, BR Blum, AS AF Del Re, Julia Moore, Martin H. Ratna, Banahalli R. Blum, Amy Szuchmacher TI Molecular sensing: modulating molecular conduction through intermolecular interactions SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID CHARGE-TRANSPORT; ELECTRONICS; JUNCTIONS; WIRES; SENSORS; TRINITROTOLUENE; SENSITIVITY; EXPLOSIVES; NANOWIRES; BINDING AB We observe changes in the molecular conductivity of individual oligophenylene-vinylene (OPV) molecules due to interactions with small aromatic molecules. Fluorescence experiments were correlated with scanning tunneling microscopy measurements in order to determine the origin of the observed effect. Both nitrobenzene and 1,4-dinitrobenzene decreased fluorescence intensity and molecular conductivity, while toluene had no effect. The observed changes in the fluorescence and conduction of OPV correlate well with the electron withdrawing ability of the interacting aromatic molecules. These results demonstrate the potential usefulness of OPV as a sensor for aromatic compounds containing electron withdrawing groups. C1 [Del Re, Julia; Blum, Amy Szuchmacher] McGill Univ, Montreal, PQ H3A 0B8, Canada. [Moore, Martin H.; Ratna, Banahalli R.] USN, Res Lab, Washington, DC 20375 USA. RP Del Re, J (reprint author), McGill Univ, 801 Sherbrooke St W, Montreal, PQ H3A 0B8, Canada. EM amy.blum@mcgill.ca NR 44 TC 4 Z9 4 U1 1 U2 32 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2013 VL 15 IS 21 BP 8318 EP 8323 DI 10.1039/c3cp43420f PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 139EV UT WOS:000318565500042 PM 23615512 ER PT J AU Behan, K Guzas, E Milburn, J Moss, S AF Behan, Kevin Guzas, Emily Milburn, Jeffrey Moss, Stacy TI Finite element modeling of K-Monel bolts under static loading and dynamic shock loading SO SHOCK AND VIBRATION LA English DT Article DE Finite element analysis; bolted joints; K-Monel bolts; validation; static loading; shock loading ID PROGRESSIVE COLLAPSE; SINGLE-BOLT; CONNECTIONS; JOINTS AB The Naval Undersea Warfare Center has funded a project to investigate the accuracy of various bolt models used to represent actual shipboard bolted connections within an analytical shock survivability assessment. The ultimate goal within this project is to develop finite element bolt representations that are not only computationally efficient, but also accurate. A significant task within this effort involved the development of highly detailed finite element models of bolted connections under various load configurations. Accordingly, high-resolution bolt models were developed and incorporated into simulations of four bolted connection test arrangements: static shear, static tension, dynamic shear, and dynamic tension. These simulation results are validated against experimental data from physical testing of each configuration. Future research will focus on exploring simplified finite element bolt representations and comparing these against the high-resolution results. C1 [Behan, Kevin; Guzas, Emily; Milburn, Jeffrey; Moss, Stacy] USN, Undersea Warfare Ctr, Div Newport NUWCDIVNPT, Newport, RI 02841 USA. RP Behan, K (reprint author), USN, Undersea Warfare Ctr, Div Newport, 1176 Howell St, Newport, RI 02841 USA. EM kevin.behan@navy.mil; emily.guzas@navy.mil FU NUWCDIVNPT FX This work was supported by internal basic and applied research funding (NUWCDIVNPT). The DoD HPC Modernization Program supported this project by supplying supercomputer time at the US Army Engineer Research and Development Center. We would like to acknowledge Pierre Corriveau, Tony Ruffa, Dawn Vaillancourt, and the entire Chief Technology Office at NUWCDIVNPT. NR 18 TC 2 Z9 2 U1 1 U2 10 PU IOS PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 1070-9622 J9 SHOCK VIB JI Shock Vib. PY 2013 VL 20 IS 3 BP 575 EP 589 DI 10.3233/SAV-130769 PG 15 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA 142LO UT WOS:000318799100016 ER PT J AU Aubry, R Karamete, K Mestreau, E Dey, S Lohner, R AF Aubry, R. Karamete, K. Mestreau, E. Dey, S. Loehner, R. TI LINEAR SOURCES FOR MESH GENERATION SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article DE mesh generation; size distribution; sources sizing function; background grid; curvature refinement; lower envelope diagram ID SURFACES; TRIANGULATION AB Sources offer a convenient way to prescribe a size distribution in space. For each newly created mesh point, the mesh generator queries the local size distribution, either to create a new point or element, depending on the underlying mesh generation method, to smooth the mesh, or to get a local relevant length scale. Sources may have different shapes such as points, edges, triangles, or boxes. They provide the size distribution given some user defined parameters and the distance of a point location to the source. Traditionally, the source strength is considered as constant. In this work, extensions to linear sources in space are proposed. It is shown that in the case of curvature refined mesh generation, substantial savings may occur due to the much better approximation of the curvature variation for a simple modification of traditional sources. Even though curvature refinement is the main application of this work, improvements through linear sources are relevant to other contexts such as user defined sources. The technique is very general as it deals with a fundamental aspect of mesh generation and can be easily incorporated into an existing mesh generator with traditional sources. Thorough details of source approximations and source filtering are provided. Relations with lower envelopes are highlighted. Practical examples illustrate the accuracy and efficiency of the method. C1 [Aubry, R.; Karamete, K.; Mestreau, E.] Sotera Def Solut, Mclean, VA 22102 USA. [Dey, S.] USN, Res Lab, Washington, DC 20375 USA. [Loehner, R.] George Mason Univ, Dept Computat & Data Sci, Coll Sci, CFD Ctr, Fairfax, VA 22030 USA. RP Aubry, R (reprint author), Sotera Def Solut, Mclean, VA 22102 USA. FU DoD HPCMP CREATE program FX This work was partly supported by the DoD HPCMP CREATE program. NR 31 TC 2 Z9 2 U1 0 U2 4 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1064-8275 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PY 2013 VL 35 IS 2 BP A886 EP A907 DI 10.1137/120874953 PG 22 WC Mathematics, Applied SC Mathematics GA 136ZT UT WOS:000318404100016 ER PT J AU Boyd, TJ Pound, MJ Lohr, D Coffin, RB AF Boyd, Thomas J. Pound, Michael J. Lohr, Daniel Coffin, Richard B. TI Radiocarbon-depleted CO2 evidence for fuel biodegradation at the Naval Air Station North Island (USA) fuel farm site SO ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS LA English DT Article ID VADOSE ZONE; CARBON-ISOTOPE; C-14; SEDIMENTS; HYDROCARBONS; SEA AB Dissolved CO2 radiocarbon and stable carbon isotope ratios were measured in groundwater from a fuel contaminated site at the North Island Naval Air Station in San Diego, CA (USA). A background groundwater sampling well and 16 wells in the underground fuel contamination zone were evaluated. For each sample, a two end-member isotopic mixing model was used to determine the fraction of CO2 derived from fossil fuel. The CO2 fraction from fossil sources ranged from 8 to 93% at the fuel contaminated site, while stable carbon isotope values ranged from -14 to +5 parts per thousand(VPDB). Wells associated with highest historical and contemporary fuel contamination showed the highest fraction of CO2 derived from petroleum (fossil) sources. Stable carbon isotope ratios indicated sub-regions on-site with recycled CO2 (delta(CO2)-C-13 as high as +5 parts per thousand(VPDB)) - most likely resulting from methanogenesis. Ancillary measurements (pH and cations) were used to determine that no fossil CaCO3, for instance limestone, biased the analytical conclusions. Radiocarbon analysis is verified as a viable and definitive technique for confirming fossil hydrocarbon conversion to CO2 (complete oxidation) at hydrocarbon-contaminated groundwater sites. The technique should also be very useful for assessing the efficacy of engineered remediation efforts and by using CO2 production rates, contaminant mass conversion over time and per unit volume. C1 [Boyd, Thomas J.; Coffin, Richard B.] USN, Res Lab, Washington, DC 20375 USA. [Pound, Michael J.] USN, Facil Engn Command Southwest, San Diego, CA 92132 USA. [Lohr, Daniel] RORE Inc, San Diego, CA 92122 USA. RP Boyd, TJ (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM thomas.boyd@nrl.navy.mil FU Naval Engineering Command Southwest FX This work was funded by the Naval Engineering Command Southwest. The authors would like to thank RORE, Inc for providing background information on the site and past/current activities. We also wish to thank J. P. Smith for help with the IC analyses and D. Steinhurst for GIS assistance. Digital imagery provided by DigitalGlobe, Longmont, CO. NR 15 TC 1 Z9 1 U1 1 U2 12 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2050-7887 J9 ENVIRON SCI-PROC IMP JI Environ. Sci.-Process Impacts PY 2013 VL 15 IS 5 BP 912 EP 918 DI 10.1039/c3em00008g PG 7 WC Chemistry, Analytical; Environmental Sciences SC Chemistry; Environmental Sciences & Ecology GA 135SV UT WOS:000318309700003 PM 23519044 ER PT J AU Trautz, KM Jenkins, PP Walters, RJ Scheiman, D Hoheisel, R Tatavarti, R Chan, R Miyamoto, H Adams, JGJ Elarde, VC Grimsley, J AF Trautz, Kelly M. Jenkins, Phillip P. Walters, Robert J. Scheiman, David Hoheisel, Raymond Tatavarti, Rao Chan, Ray Miyamoto, Haruki Adams, Jessica G. J. Elarde, Victor C. Grimsley, James TI Mobile Solar Power SO IEEE JOURNAL OF PHOTOVOLTAICS LA English DT Article DE Battery recharger; epitaxial lift off; solar cell; solar panel AB The military's need to reduce both fuel and battery resupply is a real-time requirement for increasing combat effectiveness and decreasing vulnerability. Mobile photovoltaics (PV) is a technology that can address these needs by leveraging emerging, flexible space PV technology. In this project, the development and production of a semirigid, lightweight, efficient solar blanket with the ability to mount on, or stow in, a backpack and recharge a high-capacity rechargeable lithium-ion battery was undertaken. The 19% efficient blanket consists of a 10 x 3 solar array of 20 cm(2) and single-junction epitaxial lift-off solar cells, which have an efficiency of similar to 22% under AM1.5G illumination. A power-conditioning module was also developed to interface the solar panel to the battery. Thirteen systems were outfitted during a Limited Objective Experiment-1 in February 2012, and based on the results, a second version of the system is in development. C1 [Trautz, Kelly M.; Jenkins, Phillip P.; Walters, Robert J.; Scheiman, David; Hoheisel, Raymond] USN, Res Lab, Washington, DC 20375 USA. [Hoheisel, Raymond] George Washington Univ, Washington, DC 20375 USA. [Tatavarti, Rao; Chan, Ray; Miyamoto, Haruki; Adams, Jessica G. J.; Elarde, Victor C.] MicroLink Devices Inc, Niles, IL 60714 USA. [Grimsley, James] Digital Intelligence Inc LLC, Norman, OK 73019 USA. RP Trautz, KM (reprint author), USN, Res Lab, Washington, DC 20375 USA. EM Kelly.Trautz@nrl.navy.mil; phillip.jenkins@nrl.navy.mil; robert.walters@nrl.navy.mil; david.scheiman@nrl.navy.mil; raymond.hoheisel.ctr.gm@nrl.navy.mil; rtatavarti@mldevices.com; rchan@mldevices.com; hmiyamoto@mldevices.com; jadams@mldevices.com; velarde@mldevices.com; grimsleyj@dii1.com FU Energy Expeditionary Office, Office of Naval Research; Defense Advanced Research Projects Agency; MicroLink Devices, Inc.; Design Intelligence, Inc. FX Manuscript received May 23, 2012; revised August 15, 2012; accepted August 21, 2012. Date of publication September 12, 2012; date of current version December 19, 2012. This work was supported in part by the Energy Expeditionary Office, Office of Naval Research, and the Defense Advanced Research Projects Agency, in collaboration with MicroLink Devices, Inc., and Design Intelligence, Inc. NR 5 TC 11 Z9 11 U1 0 U2 19 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 2156-3381 J9 IEEE J PHOTOVOLT JI IEEE J. Photovolt. PD JAN PY 2013 VL 3 IS 1 BP 535 EP 541 DI 10.1109/JPHOTOV.2012.2215580 PG 7 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 137KF UT WOS:000318434000084 ER PT J AU Khade, VM Hansen, JA Reid, JS Westphal, DL AF Khade, V. M. Hansen, J. A. Reid, J. S. Westphal, D. L. TI Ensemble filter based estimation of spatially distributed parameters in a mesoscale dust model: experiments with simulated and real data SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID TRANSFORM KALMAN FILTER; ESTIMATING AEROSOL EMISSIONS; DATA ASSIMILATION; THEORETICAL ASPECTS; TRANSPORT MODEL; SAHARAN DUST; PART II; IMPLEMENTATION; SYSTEM; STATE AB The ensemble adjustment Kalman filter (EAKF) is used to estimate the erodibility fraction parameter field in a coupled meteorology and dust aerosol model (Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS)) over the Sahara desert. Erodibility is often employed as the key parameter to map dust source. It is used along with surface winds (or surface wind stress) to calculate dust emissions. Using the Saharan desert as a test bed, a perfect model Observation System Simulation Experiments (OSSEs) with 40 ensemble members, and observations of aerosol optical depth (AOD), the EAKF is shown to recover correct values of erodibility at about 80% of the points in the domain. It is found that dust advected from upstream grid points acts as noise and complicates erodibility estimation. It is also found that the rate of convergence is significantly impacted by the structure of the initial distribution of erodibility estimates; isotropic initial distributions exhibit slow convergence, while initial distributions with geographically localized structure converge more quickly. Experiments using observations of Deep Blue AOD retrievals from the MODIS satellite sensor result in erodibility estimates that are considerably lower than the values used operationally. Verification shows that the use of the tuned erodibility field results in better predictions of AOD over the west Sahara and the Arabian Peninsula. C1 [Khade, V. M.] Univ Corp Atmospher Res, Visiting Scientist Program, Boulder, CO 80307 USA. [Hansen, J. A.; Reid, J. S.; Westphal, D. L.] USN, Res Lab, Monterey, CA 93943 USA. RP Khade, VM (reprint author), Univ Corp Atmospher Res, Visiting Scientist Program, Boulder, CO 80307 USA. EM vikram@geos.tamu.edu RI Reid, Jeffrey/B-7633-2014 OI Reid, Jeffrey/0000-0002-5147-7955 FU ONR [N0001412WX20258] FX COAMPS is a registered trademark of the Naval Research Laboratory. This work was carried out under ONR project N0001412WX20258. We thank ONR for the same. NR 65 TC 3 Z9 3 U1 1 U2 15 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1680-7316 J9 ATMOS CHEM PHYS JI Atmos. Chem. Phys. PY 2013 VL 13 IS 6 BP 3481 EP 3500 DI 10.5194/acp-13-3481-2013 PG 20 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 117NU UT WOS:000316961000034 ER PT J AU Allen, DR Hoppel, KW Nedoluha, GE Kuhl, DD Baker, NL Xu, L Rosmond, TE AF Allen, D. R. Hoppel, K. W. Nedoluha, G. E. Kuhl, D. D. Baker, N. L. Xu, L. Rosmond, T. E. TI Limitations of wind extraction from 4D-Var assimilation of ozone SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID 4-DIMENSIONAL VARIATIONAL ASSIMILATION; CHEMICAL-CONSTITUENT OBSERVATIONS; EXTENDED KALMAN FILTER; NAVDAS-AR; MODEL; CHEMISTRY; TRANSPORT; FORMULATION; INSTRUMENT; RADIANCES AB Time-dependent variational data assimilation allows the possibility of extracting wind information from observations of ozone or other trace gases. Since trace gas observations are not available at sufficient resolution for deriving feature-track winds, they must be combined with model background information to produce an analysis. If done with time-dependent variational assimilation, wind information may be extracted via the adjoint of the linearized tracer continuity equation. This paper presents idealized experiments that illustrate the mechanics of tracer-wind extraction and demonstrate some of the limitations of this procedure. We first examine tracer-wind extraction using a simple one-dimensional advection equation. The analytic solution for a single trace gas observation is discussed along with numerical solutions for multiple observations. The limitations of tracer-wind extraction are then explored using highly idealized ozone experiments performed with a development version of the Navy Global Environmental Model (NAVGEM) in which globally distributed hourly stratospheric ozone profiles are assimilated in a single 6 h update cycle in January 2009. Starting with perfect background ozone conditions, but imperfect dynamical conditions, ozone errors develop over the 6 h background window. Wind increments are introduced in the analysis in order to reduce the differences between background ozone and ozone observations. For "perfect" observations (unbiased and no random error), this results in root-mean-square (RMS) vector wind error reductions of up to similar to 4 m s(-1) in the winter hemisphere and tropics. Wind extraction is more difficult in the summer hemisphere due to weak ozone gradients and smaller background wind errors. The limitations of wind extraction are also explored for observations with imposed random errors and for limited sampling patterns. As expected, the amount of wind information extracted degrades as observation errors or data voids increase. In the case of poorly specified observation error covariances, assimilation of ozone data with imposed errors may result in increased RMS wind error, since the assimilation is constrained too tightly to the noisy observations. C1 [Allen, D. R.; Hoppel, K. W.; Nedoluha, G. E.; Kuhl, D. D.] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA. [Baker, N. L.; Xu, L.] USN, Marine Meteorol Div, Res Lab, Monterey, CA USA. [Rosmond, T. E.] Sci Applicat Int Corp, Forks, WA USA. RP Allen, DR (reprint author), USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA. EM douglas.allen@nrl.navy.mil; karl.hoppel@nrl.navy.mil OI Kuhl, David/0000-0002-4842-0077 FU NRL [0601153N, 0602436N]; Office of Naval Research FX We would like to thank those responsible for the development of NAVDAS-AR and the semi-Lagrangian forecast model used in NAVGEM. NAVDAS-AR was originally developed with ONR and PMW-120 funding under NRL base program elements 0601153N and 0602436N. This work was supported in part by a grant of computer time from the DOD High Performance Computing Modernization Program at the US Army Engineer Research and Development Center. This work was funded by the Office of Naval Research. We also acknowledge helpful comments on the manuscript from Alan Geer and one anonymous referee. NR 32 TC 4 Z9 5 U1 1 U2 11 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1680-7316 J9 ATMOS CHEM PHYS JI Atmos. Chem. Phys. PY 2013 VL 13 IS 6 BP 3501 EP 3515 DI 10.5194/acp-13-3501-2013 PG 15 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 117NU UT WOS:000316961000035 ER PT J AU Wang, E Salazar, E Dunson, D Carin, L AF Wang, Eric Salazar, Esther Dunson, David Carin, Lawrence TI Spatio-Temporal Modeling of Legislation and Votes SO BAYESIAN ANALYSIS LA English DT Article DE Factor analysis; Indian buffet process; latent Dirichlet allocation; political science; topic modeling ID STATISTICAL-ANALYSIS; GRAPHICAL MODELS AB A model is presented for analysis of multivariate binary data with spatio-temporal dependencies, and applied to congressional roll call data from the United States House of Representatives and Senate. The model considers each legislators constituency (location), the congressional session (time) of each vote, and the details (text) of each piece of legislation. The model can predict votes of new legislation from only text, while imposing smooth temporal evolution of legislator latent features, and correlation of legislators with adjacent constituencies. Additionally, the model estimates the number of latent dimensions required to represent the data. A Gibbs sampler is developed for posterior inference. The model is demonstrated as an exploratory tool of legislation and it performs well in quantitative comparisons to a traditional ideal-point model. C1 [Wang, Eric] USN Acad, Dept Math, Annapolis, MD 21402 USA. [Salazar, Esther] Duke Univ, Dept Elect & Comp Engn, Durham, NC USA. [Dunson, David] Duke Univ, Dept Stat Sci, Durham, NC USA. [Carin, Lawrence] Duke Univ, Dept Elect & Comp Engn, Durham, NC USA. RP Wang, E (reprint author), USN Acad, Dept Math, Annapolis, MD 21402 USA. EM wang@usna.edu; es-ther.salazar@duke.edu; dunson@stats.duke.edu; lcarin@ece.duke.edu FU Army Research Office; Office of Naval Research FX The authors wish to thank the reviewers and editors for their comments, which have substantially improved the paper. The research reported here was supported by the Army Research Office (Dr. Liyi Dai) and the Office of Naval Research (Dr. Wen Masters). NR 30 TC 1 Z9 1 U1 2 U2 7 PU INT SOC BAYESIAN ANALYSIS PI PITTSBURGH PA CARNEGIE MELLON UNIV, DEPT STTISTICS, PITTSBURGH, PA 15213 USA SN 1931-6690 J9 BAYESIAN ANAL JI Bayesian Anal. PY 2013 VL 8 IS 1 BP 233 EP 267 DI 10.1214/13-BA810 PG 35 WC Mathematics, Interdisciplinary Applications; Statistics & Probability SC Mathematics GA 125WP UT WOS:000317572900013 ER PT J AU Singh, N Koziol, KKK Chen, JH Patil, AJ Gilman, JW Trulove, PC Kafienah, W Rahatekar, SS AF Singh, Nandita Koziol, Krzysztof K. K. Chen, Jinhu Patil, Avinash J. Gilman, Jeffrey W. Trulove, Paul C. Kafienah, Wael Rahatekar, Sameer S. TI Ionic liquids-based processing of electrically conducting chitin nanocomposite scaffolds for stem cell growth SO GREEN CHEMISTRY LA English DT Article ID WALL CARBON NANOTUBES; ALPHA-CHITIN; CHITOSAN; STIMULATION; DIFFERENTIATION; DISSOLUTION; DERIVATIVES; EXTRACTION; TOXICITY; FILMS AB In the present study, we have successfully combined the biocompatible properties of chitin with the high electrical conductivity of carbon nanotubes (CNTs) by mixing them using an imidazolium-based ionic liquid as a common solvent/dispersion medium. The resulting nanocomposites demonstrated uniform distribution of CNTs, as shown by scanning electron microscopy (SEM) and optical microscopy. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction confirmed the a-crystal structure of chitin in the regenerated chitin nanocomposite scaffolds. Increased CNT concentration in the chitin matrix resulted in higher conductivity of the scaffolds. Human mesenchymal stem cells adhered to, and proliferated on, chitin-CNT nanocomposites with different ratios. Cell growth in the first 3 days was similar on all composites at a range of (0.01 to 0.07) weight fraction of CNT. However, composites at a 0.1 weight fraction of CNTs showed reduced cell attachment. There was a significant increase in cell proliferation using 0.07 weight fraction CNT composites, suggesting a stem cell enhancing function for CNTs at this concentration. In conclusion, the ionic liquid allowed the uniform dispersion of CNTs and dissolution of chitin to create a biocompatible, electrically conducting scaffold permissive for mesenchymal stem cell function. This method will enable the fabrication of chitin-based advanced multifunctional biocompatible scaffolds where electrical conduction is critical for tissue function. C1 [Singh, Nandita; Kafienah, Wael] Univ Bristol, Sch Cellular & Mol Med, Bristol BS8 1TD, Avon, England. [Koziol, Krzysztof K. K.; Chen, Jinhu] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England. [Patil, Avinash J.] Univ Bristol, Sch Chem, Ctr Organized Matter Chem, Bristol BS8 1TS, Avon, England. [Gilman, Jeffrey W.] Natl Inst Stand & Technol, Sustainable Polymers Grp, Div Engn & Mat Sci, Gaithersburg, MD 20899 USA. [Trulove, Paul C.] USN Acad, Dept Chem, Annapolis, MD 21402 USA. [Rahatekar, Sameer S.] Univ Bristol, ACCIS, Bristol BS8 1TR, Avon, England. RP Singh, N (reprint author), Univ Bristol, Sch Cellular & Mol Med, Bristol BS8 1TD, Avon, England. EM w.z.kafienah@bristol.ac.uk; Sameer.Rahatekar@bristol.ac.uk FU EPSRC; University of Bristol, Faculty of Engineering; Royal Society; European Research Council; Air Force Office of Scientific Research (AFOSR-MIPRs) [F1ATA02045G002, F1ATA02325G003] FX Funding from 'EPSRC Cross Disciplinary Feasibility Study' and University of Bristol, Faculty of Engineering pump prime funding is gratefully acknowledged. The authors would like to acknowledge support from the Centre for Nanoscience and Quantum Information for access to their material characterization facility. K. Koziol thanks the Royal Society and European Research Council for financial support. J. W. Gilman and P. C. Trulove acknowledge support from the Air Force Office of Scientific Research (AFOSR-MIPRs, F1ATA02045G002, F1ATA02325G003). NR 62 TC 8 Z9 8 U1 2 U2 42 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9262 J9 GREEN CHEM JI Green Chem. PY 2013 VL 15 IS 5 BP 1192 EP 1202 DI 10.1039/c3gc37087a PG 11 WC Chemistry, Multidisciplinary; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY SC Chemistry; Science & Technology - Other Topics GA 135OB UT WOS:000318296700016 ER PT J AU Rayburn, JT Kamenkovich, VM AF Rayburn, Jeffery Todd Kamenkovich, Vladimir M. TI Comparison of the Observed Mixed Layer Depth in the Lee of the Hawaiian Island to the Modeled Mixed Layer Depth of the Regional Navy Coastal Ocean Model SO MARINE TECHNOLOGY SOCIETY JOURNAL LA English DT Article DE modeling; Navy Coastal Ocean Model (NCOM); mixed layer depth AB This study evaluates the ability of the Hawaii Regional Navy Coastal Ocean Model to accurately predict the depth of the surface mixed layer in the lee of the Hawaiian Islands. Accurately modeling the depth of the surface mixed layer in this complex wake island environment is important to naval operations because the area hosts numerous training exercises. The simulated data were compared to CTD data collected from sea gliders, and tests for correlation were conducted. For mixed layer depths that did show correlation, match-paired t tests were used to determine the significance of the correlations. It was determined that the Hawaii Regional Navy Coastal Ocean Model has difficulty accurately predicting the depth of the surface mixed layer. It was also determined that the model has difficulty with unusual oceanographic features such as mode water eddies. These features are too uncommon and short-lived to be depicted in the climatology data. The climatology data are a major component of the synthetic profiles that the model generates, and these profiles tend to smooth out the unusual subsurface isothermal layer. List of Abbreviations BT - bathythermographs CCE - cold core eddy COAMPS - Coupled Ocean/Atmosphere Mesoscale Prediction System CTD - conductivity, temperature, and depth GDEM - Generalized Digital Environmental Model IR - infrared MLD - mixed layer depth MODAS - Modular Ocean Data Assimilation System MOODS - Master Oceanographic Observation Dataset NCODA - Navy Coupled Ocean Data Assimilation NCOM1 - Hawaii Regional Navy Coastal Ocean Model with in situ assimilation NCOM2 - Hawaii Regional Navy Coastal Ocean Model without in situ assimilation PAVE - Profile Analysis and Visualization Environment SSHa - sea surface height anomaly derived from altimetry SST - sea surface temperature WCE - warm core eddy C1 [Rayburn, Jeffery Todd] USN, Oceanog Off, Stennis Space Ctr, MS 39522 USA. [Kamenkovich, Vladimir M.] Univ So Mississippi, Dept Marine Sci, Hattiesburg, MS 39406 USA. RP Rayburn, JT (reprint author), USN, Oceanog Off, 1002 Balch Blvd, Stennis Space Ctr, MS 39522 USA. EM jeffery.rayburn@navy.mil NR 17 TC 0 Z9 0 U1 0 U2 7 PU MARINE TECHNOLOGY SOC INC PI COLUMBIA PA 5565 STERRETT PLACE, STE 108, COLUMBIA, MD 21044 USA SN 0025-3324 J9 MAR TECHNOL SOC J JI Mar. Technol. Soc. J. PD JAN-FEB PY 2013 VL 47 IS 1 BP 55 EP 66 PG 12 WC Engineering, Ocean; Oceanography SC Engineering; Oceanography GA 112IJ UT WOS:000316585600006 ER PT J AU Zhou, J Hayden, M Gao, XS AF Zhou, Jun Hayden, Matthew Gao, Xiaosheng TI An investigation of the strain rate and temperature effects on the plastic flow stress and ductile failure strain of aluminum alloys 5083-H116, 6082-T6 and a 5183 weld metal SO PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE LA English DT Article DE Flow stress; failure strain; strain rate; temperature; stress triaxiality; Johnson-Cook models ID FRACTURE CHARACTERISTICS; MECHANISMS; STATE AB This article presents a comprehensive experimental and numerical study to investigate the effects of strain rate and temperature on flow stress and ductile failure strain of three aluminum alloys. The test matrix includes smooth and notched round tensile specimens tested at room temperature (24 degrees C) and two elevated temperatures (66 degrees C and 149 degrees C), and under different strain rates. For 5083-H116, three loading rates are considered at 24 degrees C and it is found that the flow stress and failure strain are lowest at the intermediate strain rate. At high strain rate, the flow stresses of 5083-H116 and 6082-T6 are higher than the quasi-static loading while the flow stress of the 5183 weld metal remains unchanged; the ductility of the 5XXX alloys shows a significant increase compared to the quasi-static loading while the ductility of 6082-T6 does not change much. The study indicates that the Johnson-Cook plasticity and fracture models can be used to describe the temperature dependencies of the flow stress and the failure strain for 6082-T6 but not the 5XXX alloys. At 66 degrees C the 5XXX alloys do not display temperature softening compared to 24 degrees C while their ductility is reduced. As temperature is elevated to 149 degrees C, the flow stress of the 5XXX alloys decreases while the ductility increases. The unconventional behavior of the 5XXX alloys in certain temperature and strain rate ranges has been attributed to the dynamic strain aging effect. The study also suggests that the dependency of the failure strain on stress triaxiality can be described by the Johnson-Cook fracture model for all three materials under quasi-static loading at room temperature and the model parameters are calibrated using an inverse method combining experimental results with finite element analysis. C1 [Zhou, Jun; Gao, Xiaosheng] Univ Akron, Dept Mech Engn, Akron, OH 44325 USA. [Hayden, Matthew] USN, Alloy Dev & Mech Branch, Ctr Surface Warfare, Bethesda, MD USA. RP Gao, XS (reprint author), Univ Akron, Dept Mech Engn, Akron, OH 44325 USA. EM xgao@uakron.edu FU Office of naval Research [N00014-08-1-0688]; Naval Sea Systems Command FX This work was supported by the Office of naval Research [grant number N00014-08-1-0688].; Funding received from the Office of Naval Research and the Naval Sea Systems Command are gratefully acknowledged. NR 22 TC 6 Z9 6 U1 2 U2 21 PU SAGE PUBLICATIONS LTD PI LONDON PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND SN 0954-4062 J9 P I MECH ENG C-J MEC JI Proc. Inst. Mech. Eng. Part C-J. Eng. Mech. Eng. Sci. PY 2013 VL 227 IS C5 BP 883 EP 895 DI 10.1177/0954406212450962 PG 13 WC Engineering, Mechanical SC Engineering GA 133ZM UT WOS:000318179400001 ER PT S AU Montgomery, PR AF Montgomery, Paul R. BE Paredis, CJJ Bishop, C Bodner, D TI Model-Based System Integration (MBSI) - Key Attributes of MBSE from the System Integrator's Perspective SO 2013 CONFERENCE ON SYSTEMS ENGINEERING RESEARCH SE Procedia Computer Science LA English DT Proceedings Paper CT 11th Annual Conference on Systems Engineering Research (CSER) CY MAR 19-22, 2013 CL Georgia Inst Technol, Atlanta, GA SP Georgia Res Tech Inst, Intercax, IBM Res HO Georgia Inst Technol DE Model Based Systems Engineering; integration; qualification; system acquisition; system design AB Many system developments fail at the integration and qualification (I&Q) phases in the development and acquisition cycle. How can we, as Systems Engineers (SE), navigate the uncertainty and risk of system development to ensure I&Q success? One solution is applying significant influence of the system integrator (SI) member of the SE team at the very beginning of system design. If this is a solution, then what processes, methods, and practices can the SI apply in the overall SE process? Can the emerging Model-Based Systems Engineering (MBSE) methods and tools be leveraged by the SI? This paper discusses a Model Based System Integration (MBSI) approach that applies essential MBSE methods and tools to the unique goals of the SI. While MBSE is supportive of the entire SE process, it tends to be optimized for the design-side of the SE process and not necessarily for I&Q goals and objectives. MBSI highlights how MBSE tools and methods can be extended to benefit the SI. Lessons-learned from several SE graduate school projects applying these MBSI methods are provided to demonstrate the efficacy of the MBSI approach. (C) 2013 The Author. Published by Elsevier B. V. Selection and/or peer-review under responsibility of Georgia Institute of Technology C1 USN, Postgrad Sch, Monterey, CA 93943 USA. RP Montgomery, PR (reprint author), USN, Postgrad Sch, Monterey, CA 93943 USA. EM prmontgo@nps.edu NR 11 TC 0 Z9 1 U1 1 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-0509 J9 PROCEDIA COMPUT SCI PY 2013 VL 16 BP 313 EP 322 DI 10.1016/j.procs.2013.01.033 PG 10 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial; Operations Research & Management Science SC Computer Science; Engineering; Operations Research & Management Science GA BEL52 UT WOS:000317222600033 ER PT S AU Towhidnejad, M Ferris, TLJ Squires, A Madachy, R AF Towhidnejad, Massood Ferris, Timothy L. J. Squires, Alice Madachy, Ray BE Paredis, CJJ Bishop, C Bodner, D TI Enabling Systems Engineering Program Outcomes via Systems Engineering Body of Knowledge SO 2013 CONFERENCE ON SYSTEMS ENGINEERING RESEARCH SE Procedia Computer Science LA English DT Proceedings Paper CT 11th Annual Conference on Systems Engineering Research (CSER) CY MAR 19-22, 2013 CL Georgia Inst Technol, Atlanta, GA SP Georgia Res Tech Inst, Intercax, IBM Res HO Georgia Inst Technol DE Systems Engineering; Graduate Program; Program Outcomes; Competencies AB With the ever-increasing complexity of systems, it is important to properly educate the upcoming systems engineering workforce. The Graduate Reference Curriculum for Systems Engineering (GRCSE) provides guidelines for graduate program degrees in systems engineering. GRCSE establishes a baseline set of entrance expectations, objectives, outcomes and content for any graduate degree in systems engineering. GRCSE recognizes that each university needs to meet the needs of their constituents, and for this purpose, GRCSE only defines 50% of the program content, and leaves the other 50% to be defined by individual universities to satisfy the needs of their stakeholder. The purpose of this paper is to introduced GRCSE's outcomes, and how those outcomes can be attained through the program content. (C) 2013 The Authors. Published by Elsevier B.V. Selection and/or peer-review under responsibility of Georgia Institute of Technology C1 [Towhidnejad, Massood] Embry Riddle Aeronaut Univ, Daytona Beach, FL 32114 USA. [Ferris, Timothy L. J.] Univ South Australia, S Australia, Australia. [Squires, Alice] Worcester MA & Stevens Inst Technol, Worcester Polytech Inst, Hoboken, NJ USA. [Madachy, Ray] Naval Postgrad Sch, Monterey, CA USA. RP Towhidnejad, M (reprint author), Embry Riddle Aeronaut Univ, Daytona Beach, FL 32114 USA. OI Ferris, Timothy/0000-0002-0182-1682 NR 10 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-0509 J9 PROCEDIA COMPUT SCI PY 2013 VL 16 BP 983 EP 989 DI 10.1016/j.procs.2013.01.103 PG 7 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial; Operations Research & Management Science SC Computer Science; Engineering; Operations Research & Management Science GA BEL52 UT WOS:000317222600103 ER PT S AU Henry, D Pyster, A Olwell, DH Hutchison, N Enck, S Anthony, JF AF Henry, Devanandham Pyster, Art Olwell, David H. Hutchison, Nicole Enck, Stephanie Anthony, James F., Jr. BE Paredis, CJJ Bishop, C Bodner, D TI Experiences From Creating the Guide to the Systems Engineering Body of Knowledge (SEBoK) v. 1.0 SO 2013 CONFERENCE ON SYSTEMS ENGINEERING RESEARCH SE Procedia Computer Science LA English DT Proceedings Paper CT 11th Annual Conference on Systems Engineering Research (CSER) CY MAR 19-22, 2013 CL Georgia Inst Technol, Atlanta, GA SP Georgia Res Tech Inst, Intercax, IBM Res HO Georgia Inst Technol DE Systems Engineering; Body of Knowledge; Experiences; Collaboration AB Version 1.0 of the Guide to the Systems Engineering Body of Knowledge (SEBoK) was released in September 2012. Seventy authors from around the world working for three years created the SEBoK. This paper discusses twelve factors that were critical to the successful development and on-time release of the SEBoK. The approach taken is elaborated, and lessons learned along the way are highlighted. These experiences and recommendations based on them would be useful to any collaborative research effort that shares one or more of the characteristics of SEBoK development. (C) 2013 The Authors. Published by Elsevier B. V. Selection and/or peer-review under responsibility of Georgia Institute of Technology. C1 [Henry, Devanandham; Pyster, Art; Hutchison, Nicole] Stevens Inst Technol, Hoboken, NJ 07030 USA. [Olwell, David H.; Enck, Stephanie] Naval Postgrad Sch, Monterey, CA 93943 USA. [Anthony, James F., Jr.] Sevatec, Falls Church, VA 22042 USA. RP Henry, D (reprint author), Stevens Inst Technol, Hoboken, NJ 07030 USA. EM dhenry@stevens.edu FU U. S. DoD; SERC [H98230-08-D-0171]; University Affiliated Research Center (UARC) FX This material is based upon work supported, in whole or in part, by the U. S. DoD through the SERC under Contract H98230-08-D-0171. SERC is a federally funded University Affiliated Research Center (UARC) managed by Stevens Institute of Technology, Hoboken, NJ, USA. 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 U. S. Department of Defense. NR 11 TC 1 Z9 1 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-0509 J9 PROCEDIA COMPUT SCI PY 2013 VL 16 BP 990 EP 999 DI 10.1016/j.procs.2013.01.104 PG 10 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial; Operations Research & Management Science SC Computer Science; Engineering; Operations Research & Management Science GA BEL52 UT WOS:000317222600104 ER PT S AU Olwell, DH Henry, D Pyster, A Hutchison, N Enck, S Anthony, JF AF Olwell, David H. Henry, Devanandham Pyster, Art Hutchison, Nicole Enck, Stephanie Anthony, James F., Jr. BE Paredis, CJJ Bishop, C Bodner, D TI Analysis of the References from the Guide to the Systems Engineering Body of Knowledge (SEBoK) SO 2013 CONFERENCE ON SYSTEMS ENGINEERING RESEARCH SE Procedia Computer Science LA English DT Proceedings Paper CT 11th Annual Conference on Systems Engineering Research (CSER) CY MAR 19-22, 2013 CL Georgia Inst Technol, Atlanta, GA SP Georgia Res Tech Inst, Intercax, IBM Res HO Georgia Inst Technol DE Systems Engineering; Body of Knowledge; Survey of literature AB Version 1.0 of the Guide to the Systems Engineering Body of Knowledge (SEBoK) was released in September 2012. The SEBoK contained over 1000 articles and almost 700 books as references. 224 of the references were cited as primary references. This paper disaggregates the references by several dimensions. Interesting insights include the most cited references; topics where references are sparse, indicating immaturity of the field; the longitudinal distribution of references; organizations with the most authors cited; and the most active research topics. (C) 2013 The Authors. Published by Elsevier B.V. Selection and/or peer-review under responsibility of Georgia Institute of Technology C1 [Olwell, David H.; Enck, Stephanie] USN, Postgrad Sch, Monterey, CA 93943 USA. [Henry, Devanandham; Pyster, Art; Hutchison, Nicole] Stevens Inst Technol, Castle Point Hudson, Hoboken, NJ 07030 USA. [Anthony, James F., Jr.] Sevatec, Falls Church, VA 22042 USA. RP Olwell, DH (reprint author), USN, Postgrad Sch, Monterey, CA 93943 USA. FU U. S. Department of Defense; Systems Engineering Research Center ( SERC) [H98230-08-D-0171]; University Affiliated Research Center ( UARC) FX This material is based upon work supported, in whole or in part, by the U. S. Department of Defense through the Systems Engineering Research Center ( SERC) under Contract H98230-08-D-0171. SERC is a federally funded University Affiliated Research Center ( UARC) managed by Stevens Institute of Technology, Hoboken, NJ, USA. 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 U. S. Department of Defense. NR 18 TC 0 Z9 0 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-0509 J9 PROCEDIA COMPUT SCI PY 2013 VL 16 BP 1000 EP 1006 DI 10.1016/j.procs.2013.01.105 PG 7 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial; Operations Research & Management Science SC Computer Science; Engineering; Operations Research & Management Science GA BEL52 UT WOS:000317222600105 ER PT J AU Xu, X Hurlburt, HE Schmitz, WJ Zantopp, R Fischer, J Hogan, PJ AF Xu, X. Hurlburt, H. E. Schmitz, W. J., Jr. Zantopp, R. Fischer, J. Hogan, P. J. TI On the currents and transports connected with the atlantic meridional overturning circulation in the subpolar North Atlantic SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID WESTERN-BOUNDARY-CURRENT; LABRADOR-SEA; DEEP-WATER; CURRENT SYSTEM; CONVECTION; OCEAN; VARIABILITY; RESOLUTION; MODELS; RESTRATIFICATION AB Results from an interannually forced, 0.08 degrees eddy-resolving simulation based on the Hybrid Coordinate Ocean Model, in conjunction with a small but well-determined transport database, are used to investigate the currents and transports associated with the Atlantic meridional overturning circulation (AMOC) in the subpolar North Atlantic (SPNA). The model results yield a consistent warming in the western SPNA since the early 1990s, along with mean transports similar to those observed for the trans-basin AMOC across the World Ocean Circulation Experiment hydrographic section AR19 (16.4 Sv) and boundary currents at the exit of the Labrador Sea near 53 degrees N (39.0 Sv) and east of the Grand Banks near 43 degrees N (15.9 Sv). Over a 34 year integration, the model-determined AMOC across the AR19 section and the western boundary current near 53 degrees N both exhibit no systematic trend but some long-term (interannual and longer) variabilities, including a decadal transport variation of 3-4 Sv from relatively high in the 1990s to low in the 2000s. The decadal variability of the model boundary current transport near 53 degrees N lags the observed winter time North Atlantic Oscillation index by about 2 years and leads the model AMOC across the AR19 section by about 1 year. The model results also show that the long-term variabilities are low compared to those on shorter time scales. Thus, rapid sampling of the current over long time intervals is required to filter out high-frequency variabilities in order to determine the lower frequency variabilities of interest. Citation: Xu, X., H. E. Hurlburt, W. J. Schmitz Jr., R. Zantopp, J. Fischer, and P. J. Hogan (2013), On the currents and transports connected with the atlantic meridional overturning circulation in the subpolar North Atlantic, J. Geophys. Res. Oceans, 118, 502-516, doi:10.1002/jgrc.20065. C1 [Xu, X.] Univ So Mississippi, Dept Marine Sci, Stennis Space Ctr, MS USA. [Hurlburt, H. E.; Hogan, P. J.] USN, Res Lab, Div Oceanog, Stennis Space Ctr, MS 39529 USA. [Schmitz, W. J., Jr.] Texas A&M Univ Corpus Christi, Harte Res Inst, Corpus Christi, TX USA. [Zantopp, R.; Fischer, J.] Helmholtz Ctr Ocean Res Kiel GEOMAR, Kiel, Germany. RP Xu, X (reprint author), Florida State Univ, COAPS, 2035 E Paul Dirac Dr,200 RM Johnson Bldg, Tallahassee, FL 32306 USA. EM xxu@coaps.fsu.edu RI Fischer, Jurgen/A-4162-2014 FU National Ocean Partnership Program; Office of Naval Research [601153N, 602435N]; German Research ministry [03F0605B] FX This work is a contribution to the project U. S.-GODAE: Global ocean prediction using the HYbrid Coordinate Ocean Model, funded under the National Ocean Partnership Program, and to the projects Global remote littoral forcing via deep water pathways (program element 601153N) and Full column mixing for numerical ocean models (602435N), funded by the Office of Naval Research. The moored current meter observations are supported by the German Research ministry contract 03F0605B and by the EU FP7 project THOR. The altimeter products were produced by Ssalto/Duacs and distributed by Aviso, with support from CNES (http://www.aviso.oceanobs.com/duacs). The simulations were performed on supercomputers at the Naval Oceanographic Office, Stennis Space Center, MS, and the U. S. Army Engineer Research and Development Center, Vicksburg, MS, using computer time provided by the U. S. Department of Defense High Performance Computing Modernization Program. Dr. R. Lumpkin (NOAA/AMOL) kindly provided the inverse results for comparison. The authors thank E. J. Metzger and A. J. Wallcraft (NRL/SSC) for the help in configuring numerical experiments. This is Naval Research Laboratory publication number NRL/JA/7304 -11-0647, and it has been approved for public release. NR 67 TC 15 Z9 15 U1 1 U2 27 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9275 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD JAN PY 2013 VL 118 IS 1 BP 502 EP 516 DI 10.1002/jgrc.20065 PG 15 WC Oceanography SC Oceanography GA 129JU UT WOS:000317836100035 ER PT J AU Samimi, A Scales, WA Fu, H Bernhardt, PA Briczinski, SJ McCarrick, MJ AF Samimi, A. Scales, W. A. Fu, H. Bernhardt, P. A. Briczinski, S. J. McCarrick, M. J. TI Ion gyroharmonic structures in stimulated radiation during second electron gyroharmonic heating: 1. Theory SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID OSCILLATING 2-STREAM INSTABILITY; IONOSPHERIC REFLECTION REGION; FIELD-ALIGNED IRREGULARITIES; STANDING WAVE PATTERN; HF RADIO-WAVES; ELECTROMAGNETIC EMISSION; DOWNSHIFTED PEAK; UPPER HYBRID; FREQUENCY; SCATTERING AB Stimulated electromagnetic emissions (SEEs) may provide important diagnostic information about space plasma composition, energetics, and dynamics during active experiments in which ground-based high-powered radio waves are transmitted into the ionosphere. The nonlinear plasma processes producing this secondary radiation are not well understood particularly for some recent observations where the transmitter (pump) frequency is near the second harmonic of the electron gyrofrequency. New, more comprehensive, experimental observations of spectral features within 1 kHz of the pump wave frequency are reported here to begin more careful comparisons of the experimental observations and a possible theoretical underpinning, which is also provided. The experimental observations typically show two distinct types of secondary radiation spectra, which are (a) discrete narrowband harmonic spectral structures ordered by the ion gyrofrequency and (b) broadband spectral structure with center frequency near 500 Hz and similar spectral bandwidth. A theoretical model is provided that interprets these spectral features as resulting from parametric decay instabilities in which the pump field ultimately decays into high-frequency upper hybrid/electron Bernstein and low-frequency neutralized ion Bernstein and/or obliquely propagating ion acoustic waves at the upper hybrid interaction altitude. Detailed calculations of the threshold level, growth rate, unstable wave number, and frequency bandwidth of the instabilities are provided for comparisons with experimental observations. An assessment of the effect of the critical instability parameters are provided including pump electric field strength, proximity of the pump frequency to the electron gyrofrequency and pump electric field geometry. The model shows quite reasonable agreement with the experimental observations. Further discussions are provided of connections with past observed SEE spectral features and potential new diagnostic information provided by these newly categorized spectra. Citation: Samimi, A., W. A. Scales, H. Fu, P. A. Bernhardt, S. J. Briczinski, and M. J. McCarrick (2013), Ion gyroharmonic structures in stimulated radiation during second electron gyroharmonic heating: 1. Theory, J. Geophys. Res. Space Physics, 118, 502-514, doi:10.1029/2012JA018146. C1 [Samimi, A.; Scales, W. A.; Fu, H.] Virginia Tech, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA. [Bernhardt, P. A.; Briczinski, S. J.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [McCarrick, M. J.] Marsh Creek LLC, Gakona, AK USA. RP Samimi, A (reprint author), Virginia Tech, Bradley Dept Elect & Comp Engn, Whittemore Hall, Blacksburg, VA 24061 USA. EM arsamimi@vt.edu RI Fu, Haiyang/K-9376-2013; Haiyang, Fu/P-8007-2015 FU National Science Foundation FX This work was supported by the National Science Foundation. NR 38 TC 16 Z9 17 U1 0 U2 6 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9380 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD JAN PY 2013 VL 118 IS 1 BP 502 EP 514 DI 10.1029/2012JA018146 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 129RC UT WOS:000317858600048 ER PT J AU Quinlan, RA Lu, YC Shao-Horn, Y Mansour, AN AF Quinlan, Ronald A. Lu, Yi-Chun Shao-Horn, Yang Mansour, Azzam N. TI XPS Studies of Surface Chemistry Changes of LiNi0.5Mn0.5O2 Electrodes during High-Voltage Cycling SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID LITHIUM-ION BATTERIES; RAY PHOTOELECTRON-SPECTROSCOPY; X-RAY; ELECTROCHEMICAL PROPERTIES; CATHODE MATERIAL; LOCAL-STRUCTURE; RECHARGEABLE BATTERIES; GRAPHITE ELECTRODE; INSERTION MATERIAL; RATE CAPABILITY AB We have examined the electrochemical performance and the surface chemistry of quenched and annealed LiNi0.5Mn0.5O2 electrodes as a function of high voltage cutoff via X-ray photoelectron spectroscopy (XPS). After cycling for 20 cycles, the surface regions of quenched and annealed electrodes are significantly enriched in fluorine and lithium relative to pristine electrodes, with the degree of enrichment being greater for the annealed electrodes. Mn and Ni fluorides are observed on the surface of the cycled annealed electrodes while both Mn and Ni oxides and fluorides are observed on the surface of the cycled quenched electrodes. The XPS data indicate that the surface films formed on the annealed electrodes as a result of cycling are thicker than the films formed on the quenched electrodes. Significantly, the results indicate that Mn and Ni dissolution are suppressed by annealing, further supporting previous findings that showed an increase in the relative concentration of Mn4+ to Mn3+ and a decrease in the Ni/Li interlayer mixing for the annealed material relative to the quenched material. The formation of Mn and Ni fluorides and the suppression of highly resistive LiF upon cycling appear to play an important role toward the improved capacity retention of annealed LiN0.5Mn0.5O2. (C) 2013 The Electrochemical Society. [DOI: 10.1149/2.069304jes] All rights reserved. C1 [Quinlan, Ronald A.; Mansour, Azzam N.] USN, Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA. [Lu, Yi-Chun; Shao-Horn, Yang] MIT, Electrochem Energy Lab, Cambridge, MA 02139 USA. RP Quinlan, RA (reprint author), USN, Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA. EM azzam.mansour@navy.mil RI Lu, Yi-Chun/J-1841-2015; OI Lu, Yi-Chun/0000-0003-1607-1615; Quinlan, Ronald/0000-0003-0949-8645 FU Office of FreedomCAR and Vehicle Technologies of the DOE [DE-AC03-76SF00098]; LBNL FX This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of FreedomCAR and Vehicle Technologies of the DOE (DE-AC03-76SF00098 with LBNL). We thank Naoaki Yabuuchi for LiNi0 5Mn0.5O2 sample preparation. NR 52 TC 16 Z9 16 U1 9 U2 87 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PY 2013 VL 160 IS 4 BP A669 EP A677 DI 10.1149/2.069304jes PG 9 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA 117TU UT WOS:000316976800021 ER PT S AU Plunkett, KF Imam, MA Rath, B Conrad, H AF Plunkett, K. F. Imam, M. A. Rath, B. Conrad, H. BE Unal, HI TI Resistance of a commercial magnetorheological fluid to penetration SO 13TH INTERNATIONAL CONFERENCE ON ELECTRORHEOLOGICAL FLUIDS AND MAGNETORHEOLOGICAL SUSPENSIONS (ERMR2012) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 13th International Conference on Electrorheological Fluids and Magnetorheological Suspensions (ERMR) CY JUL 02-06, 2012 CL Gazi Univ, Ankara, TURKEY SP Anton-Paar GmbH, Kurimoto Ltd, Anamed & Analitik Grp, TA Instruments, Lord Co, Turkish Powder Met Assoc (TTMD), LiKrom Ltd, Atomika Ltd, Turkish Patent Inst (TPI), Berkecan Ltd, Kurukahveci Mehmed Efendi Mahdumlari, Turkish Sci Res Fdn (TUBAV) HO Gazi Univ AB The stress, sigma, required to penetrate a commercial magnetorheological (MR) fluid exposed to an applied magnetic field, B, in the range of 0 - 0.25 Tesla was determined for: (a) a constant, continuous field and (b) on-off field. With constant field application, it was found that sigma vs. the penetration depth, x, of the cylindrical indenter into the MR fluid at a constant rate of 0.12-0.18 mm/s was parabolic in form, namely sigma = sigma(o)x(n) where sigma(0) = AH, A = 1.7 kPa/(kA/m) and n = 0.3-0.5. The magnitude of so is approximately six times that of the shear yield stress, tau(y), of the MR fluid. A model is proposed to explain the resistance to penetration into the MR fluid with the constant field. The results obtained in the on-off field tests and the in-out tests are in keeping with the model. C1 [Plunkett, K. F.; Conrad, H.] N Carolina State Univ, Dept Mat Sci & Engn, Box 7907, Raleigh, NC 27695 USA. [Imam, M. A.; Rath, B.] Naval Res Lab, Mat Sci & Component Technol Directorate, Washington, DC 20375 USA. RP Plunkett, KF (reprint author), N Carolina State Univ, Dept Mat Sci & Engn, Box 7907, Raleigh, NC 27695 USA. EM kenfplunkett@gmail.com FU Naval Research Laboratory, Washington, D.C. FX This research was funded by the Naval Research Laboratory, Washington, D.C. NR 5 TC 1 Z9 1 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2013 VL 412 AR 012023 DI 10.1088/1742-6596/412/1/012023 PG 10 WC Physics, Applied; Physics, Fluids & Plasmas SC Physics GA BEK67 UT WOS:000317122500023 ER PT J AU Wettergren, TA Costa, R AF Wettergren, Thomas A. Costa, Russell TI Optimal Planning of Distributed Sensor Layouts for Collaborative Surveillance SO INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS LA English DT Article ID TARGET-TRACKING; NETWORKS; PLACEMENT; CLASSIFICATION; CONNECTIVITY AB The use of a spatially distributed set of sensors has become a cost-effective approach to achieve surveillance coverage against moving targets. As more sensors are utilized in a collaborative manner, the optimal placement of sensors becomes critical to achieve the most efficient coverage. In this paper, we develop a numerical optimization approach to place distributed sets of sensors to perform surveillance against moving targets over extended areas. In particular, we develop a genetic algorithm solution to find spatial sensor density functions that maximize effectiveness against moving targets, where the surveillance performance of individual sensors is dependent on their absolute position in the region as well as their relative position to both the expected target(s) and any asset that is being protected. The density function representation of optimal sensor locations is shown to provide a computationally efficient method for determining sensor asset location planning. We illustrate the effective performance of this method on numerical examples based on problems of general area surveillance and risk-based surveillance in protection of an asset. C1 [Wettergren, Thomas A.; Costa, Russell] USN, Undersea Warfare Ctr, Newport, RI 02841 USA. RP Wettergren, TA (reprint author), USN, Undersea Warfare Ctr, 1176 Howell St, Newport, RI 02841 USA. EM t.a.wettergren@ieee.org OI Wettergren, Thomas/0000-0002-6623-8412 FU Office of Naval Research [321MS]; In-house Laboratory Independent Research program of the Naval Undersea Warfare Center FX This work has been supported by the Office of Naval Research code 321MS and by the In-house Laboratory Independent Research program of the Naval Undersea Warfare Center. NR 35 TC 0 Z9 0 U1 0 U2 7 PU HINDAWI PUBLISHING CORPORATION PI NEW YORK PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA SN 1550-1329 J9 INT J DISTRIB SENS N JI Int. J. Distrib. Sens. Netw. PY 2013 AR 145496 DI 10.1155/2013/145496 PG 13 WC Computer Science, Information Systems; Telecommunications SC Computer Science; Telecommunications GA 128LK UT WOS:000317770300001 ER PT J AU Haase, L Shukla, A Johnson, DC Thom, NJ Stanley, EA Simmons, AN Paulus, MP AF Haase, Lori Shukla, Akanksha Johnson, Douglas C. Thom, Nate J. Stanley, Elizabeth A. Simmons, Alan N. Paulus, Martin P. TI MINDFULNESS-BASED TRAINING ALTERS BRAIN ACTIVATION DURING AN EMOTION FACE PROCESSING TASK IN INFANTRY MARINES SO JOURNAL OF COGNITIVE NEUROSCIENCE LA English DT Meeting Abstract CT 20th Annual Meeting of the Cognitive-Neuroscience-Society CY APR 13-16, 2013 CL San Francisco, CA SP Cognit Neuroscience Soc C1 [Haase, Lori; Shukla, Akanksha; Johnson, Douglas C.; Simmons, Alan N.; Paulus, Martin P.] Univ Calif San Diego, San Diego, CA 92103 USA. [Johnson, Douglas C.; Thom, Nate J.] USN, Warfighter Performance Dept, Hlth Res Ctr, San Diego, CA 92152 USA. [Stanley, Elizabeth A.] Mind Fitness Training Inst, Alexandria, VA USA. [Simmons, Alan N.; Paulus, Martin P.] VA San Diego Healthcare Syst, San Diego, CA USA. RI Simmons, Alan/A-9815-2008 OI Simmons, Alan/0000-0003-3963-2112 NR 0 TC 0 Z9 0 U1 1 U2 3 PU MIT PRESS PI CAMBRIDGE PA 55 HAYWARD STREET, CAMBRIDGE, MA 02142 USA SN 0898-929X J9 J COGNITIVE NEUROSCI JI J. Cogn. Neurosci. PY 2013 SU S BP 128 EP 128 PG 1 WC Neurosciences; Psychology, Experimental SC Neurosciences & Neurology; Psychology GA 118MV UT WOS:000317030500498 ER PT J AU Gourdin, G Smith, PH Jiang, T Tran, TN Qu, DY AF Gourdin, Gerald Smith, Patricia H. Jiang, Thomas Tran, Thanh N. Qu, Deyang TI Lithiation of amorphous carbon negative electrode for Li ion capacitor SO JOURNAL OF ELECTROANALYTICAL CHEMISTRY LA English DT Article DE Asymmetric supercapacitor; Lithiation; SEI layer; Amorphous carbon electrode ID DOUBLE-LAYER CAPACITORS; COMPOSITE GRAPHITE-ELECTRODES; ELECTROCHEMICAL CAPACITORS; LITHIUM INSERTION; ACTIVATED CARBON; ENERGY-STORAGE; SUPERCAPACITORS; PERFORMANCE; BATTERIES; MECHANISM AB Electrochemical double-layer capacitors (EDLCs) are well suited to time-dependent electrical power output, but in terms of their overall energy density, these devices are much more limited in comparison to Li ion batteries. However, asymmetric supercapacitors that utilize a lithiated negative electrode and a high surface area positive electrode can result in significant improvements in the overall energy density of the device. Key to the development of a LixC6 asymmetric supercapacitor, or Li ion capacitor, is the preparation of the lithiated negative electrode. A common method of accomplishing this is to allow Li ions to intercalate into the carbon material under a spontaneous potential gradient. However, the insertion process can be very slow and may take several hours to reach equilibrium. However, an electrochemically driven lithiation process could significantly decrease the electrode preparation time, which would have great benefits for the development of these devices. Three methods for the insertion of Li into activated carbon electrodes were evaluated in this work that examined the examined the effect of electrochemically-driven lithiation of an activated carbon powder electrode as it may compare to unaided lithiation. In addition, in one of the configurations, the sacrificial Li metal electrode faced the 'back' side of the carbon electrode, which provides the advantage in that the cell would not have to be disassembled and re-assembled to evaluate the completed Li capacitor cell, since the positive electrode could readily be added to the cell during the initial assembly. During the lithiation process, the current flow and total charge passed were monitored and an electrochemical impedance analysis was performed to gain insight into the formation of the SEI layer on the carbon surface during the Li insertion process. (C) 2012 Elsevier B.V. All rights reserved. C1 [Gourdin, Gerald; Qu, Deyang] Univ Massachusetts, Dept Chem, Boston, MA 02125 USA. [Smith, Patricia H.; Jiang, Thomas; Tran, Thanh N.] USN, Ctr Surface Warfare, Carderock Div West Bethesda, Bethesda, MD 20817 USA. RP Qu, DY (reprint author), Univ Massachusetts, Dept Chem, Boston, MA 02125 USA. EM deyang.qu@umb.edu RI Gourdin, Gerald/K-4528-2013 OI Gourdin, Gerald/0000-0002-9023-2707 FU Navy Surface Warfare Center; Office of Naval Research FX The financial support provided by the Navy Surface Warfare Center and Office of Naval Research is gratefully acknowledged. NR 38 TC 14 Z9 14 U1 9 U2 76 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 1572-6657 J9 J ELECTROANAL CHEM JI J. Electroanal. Chem. PD JAN 1 PY 2013 VL 688 SI SI BP 103 EP 112 DI 10.1016/j.jelechem.2012.08.029 PG 10 WC Chemistry, Analytical; Electrochemistry SC Chemistry; Electrochemistry GA 120GM UT WOS:000317158800018 ER PT S AU Ramachandran, V Schrimpf, RD Reed, RA Zhang, E Shen, X Pantelides, ST McMorrow, D Boos, JB AF Ramachandran, V. Schrimpf, R. D. Reed, R. A. Zhang, E. Shen, X. Pantelides, S. T. McMorrow, D. Boos, J. Brad GP IEEE TI Single-Event Transient Sensitivity to Gate Bias in InAlSb/InAs/AlGaSb High Electron Mobility Transistors SO 2012 INTERNATIONAL CONFERENCE ON INDIUM PHOSPHIDE AND RELATED MATERIALS (IPRM) SE International Conference on Indium Phosphide and Related Materials LA English DT Proceedings Paper CT 24th International Conference on Indium Phosphide and Related Materials (IPRM) CY AUG 27-30, 2012 CL Univ California, Santa Barbara, CA HO Univ California AB We have characterized the single-event transient sensitivity to gate bias of InAlSb/InAs/AlGaSb high electron mobility transistors through experiments and simulations. These depletion-mode transistors exhibit increased charge collection as the gate bias moves from depletion toward threshold, similar to the response observed in floating body silicon-on-insulator devices. Maximum charge collection occurs near threshold, decreasing as the gate bias moves toward accumulation. The interplay between the longitudinal electric field in the channel and the vertical electric field underneath the gate affects the net radiation-generated charge in the InAs channel, which is responsible for the observed experimental trends. C1 [Ramachandran, V.; Schrimpf, R. D.; Reed, R. A.; Zhang, E.; Pantelides, S. T.] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA. [Schrimpf, R. D.; Reed, R. A.] Vanderbilt Univ, Inst Space & Def Elect, Nashville, TN 37235 USA. [Shen, X.; Pantelides, S. T.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. [McMorrow, D.; Boos, J. Brad] US Navy, Res Lab, Washington, DC 20375 USA. RP Ramachandran, V (reprint author), Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA. FU Defense Threat Reduction Agency's 6.1 Basic Materials Research Progam FX This work was supported in part by the Defense Threat Reduction Agencys 6.1 Basic Materials Research Progam. The authors would also like to acknowledge Vanderbilt Universitys Advanced Computing Center for Research and Education supercomputing cluster on which all TCAD simulations were performed. NR 7 TC 0 Z9 0 U1 0 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1092-8669 BN 978-1-4673-1724-5 J9 CONF P INDIUM PHOSPH PY 2013 BP 77 EP 80 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Optics; Physics, Applied SC Engineering; Materials Science; Optics; Physics GA BEJ10 UT WOS:000316822700022 ER PT S AU Williams, KJ AF Williams, Keith J. GP IEEE TI MICROWAVE PHOTONICS SO 2012 INTERNATIONAL CONFERENCE ON INDIUM PHOSPHIDE AND RELATED MATERIALS (IPRM) SE International Conference on Indium Phosphide and Related Materials LA English DT Proceedings Paper CT 24th International Conference on Indium Phosphide and Related Materials (IPRM) CY AUG 27-30, 2012 CL Univ California, Santa Barbara, CA HO Univ California ID LINKS AB An overview of analog microwave photonics will be presented. The performance requirements for externally-modulated analog microwave photonic links will be reviewed with specific emphasis placed on modulator efficiency, laser noise, detected photocurrent, and link linearity. C1 USN, Res Lab, Photon Technol Branch, Washington, DC 20375 USA. RP Williams, KJ (reprint author), USN, Res Lab, Photon Technol Branch, Code 5650, Washington, DC 20375 USA. NR 9 TC 0 Z9 0 U1 1 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1092-8669 BN 978-1-4673-1724-5 J9 CONF P INDIUM PHOSPH PY 2013 BP 212 EP 214 PG 3 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Optics; Physics, Applied SC Engineering; Materials Science; Optics; Physics GA BEJ10 UT WOS:000316822700059 ER PT J AU Martin, SW Marques, TA Thomas, L Morrissey, RP Jarvis, S DiMarzio, N Moretti, D Mellinger, DK AF Martin, Stephen W. Marques, Tiago A. Thomas, Len Morrissey, Ronald P. Jarvis, Susan DiMarzio, Nancy Moretti, David Mellinger, David K. TI Estimating minke whale (Balaenoptera acutorostrata) boing sound density using passive acoustic sensors SO MARINE MAMMAL SCIENCE LA English DT Article DE cue count; passive acoustic density estimation; passive acoustic monitoring; boing vocalization; spatially explicit capture-recapture ID CAPTURE-RECAPTURE; SPERM-WHALES; LOCALIZATION; TONGUE; OCEAN AB Density estimation for marine mammal species is performed primarily using visual distance sampling or capture-recapture. Minke whales in Hawaiian waters are very difficult to sight; however, they produce a distinctive "boing" call, making them ideal candidates for passive acoustic density estimation. We used an array of 14 bottom-mounted hydrophones, distributed over a 60 x 30 km area off Kauai, Hawaii, to estimate density during 12 d of recordings in early 2006. We converted the number of acoustic cues (i.e., boings) detected using signal processing software into a cue density by accounting for the false positive rate and probability of detection. The former was estimated by manual validation, the latter by applying spatially explicit capture-recapture (SECR) methods to a subset of data where we had determined which hydrophones detected each call. Estimated boing density was 130 boings per hour per 10,000 km(2) (95% CI 104-163). Little is known about the population's acoustic behavior, so conversion from boing to animal density is difficult. As a demonstration of the method, we used a tentative boing rate of 6.04 boings per hour, from a single animal tracked in 2009, to give an estimate of 21.5 boing-calling minke whales per 10,000 km(2). C1 [Martin, Stephen W.] Space & Naval Warfare Syst Ctr Pacific, San Diego, CA 92152 USA. [Marques, Tiago A.] Univ St Andrews, Ctr Res Ecol & Environm Modelling, St Andrews KY16 9LZ, Fife, Scotland. [Marques, Tiago A.] Univ Lisbon, Ctr Estatist & Aplicacoes, P-1749016 Lisbon, Portugal. [Thomas, Len] Univ St Andrews, Ctr Res Ecol & Environm Modelling, St Andrews KY16 9LZ, Fife, Scotland. [Morrissey, Ronald P.; Jarvis, Susan; DiMarzio, Nancy; Moretti, David] USN, Undersea Warfare Ctr, Newport, RI 02841 USA. [Mellinger, David K.] Oregon State Univ, Cooperat Inst Marine Mammal Studies, Corvallis, OR 97365 USA. RP Martin, SW (reprint author), Space & Naval Warfare Syst Ctr Pacific, 53560 Hull St, San Diego, CA 92152 USA. EM steve.w.martin@navy.mil RI Marques, Tiago/A-5530-2010; OI Marques, Tiago/0000-0002-2581-1972; Thomas, Len/0000-0002-7436-067X FU passive Acoustic Fixed sensors (DECAF); International Association of Oil and Gas Producers; US National Marine Fisheries Service; Fundacao Nacional para a Ciencia e a Tecnologia (FCT), Portugal [PEst-OE/MAT/UI0006/2011] FX We appreciate the support of personnel at the PMRF, notably Jim Hager, Mike Dick, Eliseo Bolosan, and Robin Higuchi, in collection of acoustic data over several years. This work is an output of the National Oceanographic Partnership Program sponsored project Density Estimation of Cetaceans from passive Acoustic Fixed sensors (DECAF), funded jointly by the Joint Industry Program of the International Association of Oil and Gas Producers and the US National Marine Fisheries Service. TAM's research partially sponsored by national funds through the Fundacao Nacional para a Ciencia e a Tecnologia (FCT), Portugal, under the project PEst-OE/MAT/UI0006/2011. We thank all the DECAF team members for discussions that led to a better paper, particularly David Borchers who provided insightful comments regarding the SECR analysis. The data used in this study are freely available on the Ocean Biogeographic Information System, Spatial Ecological Analysis of Megaverebrate Populations (OBIS-SEAMAP) website (http://seamap.env.duke.edu/). NR 30 TC 18 Z9 19 U1 0 U2 22 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0824-0469 J9 MAR MAMMAL SCI JI Mar. Mamm. Sci. PD JAN PY 2013 VL 29 IS 1 BP 142 EP 158 DI 10.1111/j.1748-7692.2011.00561.x PG 17 WC Marine & Freshwater Biology; Zoology SC Marine & Freshwater Biology; Zoology GA 122AW UT WOS:000317288200008 ER PT J AU Bradshaw, R Wolstenholme, R Ferguson, LS Sammon, C Mader, K Claude, E Blackledge, RD Clench, MR Francese, S AF Bradshaw, Robert Wolstenholme, Rosalind Ferguson, Leesa Susanne Sammon, Chris Mader, Kerstin Claude, Emmanuelle Blackledge, Robert D. Clench, Malcolm R. Francese, Simona TI Spectroscopic imaging based approach for condom identification in condom contaminated fingermarks SO ANALYST LA English DT Article ID MALDI MASS-SPECTROMETRY; LATENT FINGERMARKS; SEXUAL ASSAULT; FORENSIC ANALYSIS; LUBRICANTS; LASER; METHODOLOGY; TRACES; TIME AB Sexual offenders are increasingly reported to use condoms while committing the crime, mainly to prevent the transfer of DNA evidence. Although condoms are often removed from the crime scene, vaginal swabs can be taken from the victim to prove the presence of condom lubricants and therefore evidence of corpus delicti. However, late reporting to the police and the tendency of the victim to wash immediately after the crime, may compromise the detection of condom lubricants. Recently we showed that Matrix-Assisted Laser Desorption/Ionisation MS Imaging (MALDI MSI) of condom contaminated fingermarks enables images of the fingermark ridge pattern to be obtained simultaneously with the detection of the condom lubricant for two condom brands, thus becoming a potential alternative way to link the assailant to the crime. Building on the value of this information, it would be advantageous to identify the condom brand used during the sexual assault. Here we show the development of a multidisciplinary spectroscopic approach, including MALDI MSI, MS/MS, Raman microscopy and ATR-FTIR spectroscopy, applied to a range of condom brands/types. The techniques have complementary features and provide complementary information to retrieve a "condom brand spectroscopic fingerprint". Unique spectroscopic profiles would greatly aid in the screening and identification of the condom, thus adding intelligence to the case under investigation. C1 [Bradshaw, Robert; Wolstenholme, Rosalind; Ferguson, Leesa Susanne; Clench, Malcolm R.; Francese, Simona] Sheffield Hallam Univ, Biomed Res Ctr, Sheffield S1 1WB, S Yorkshire, England. [Sammon, Chris; Mader, Kerstin] Sheffield Hallam Univ, Mat & Engn Res Inst, Sheffield S1 1WB, S Yorkshire, England. [Claude, Emmanuelle] Waters Corp, Manchester, Lancs, England. [Blackledge, Robert D.] USN, Criminal Investigat Serv Reg Forens Lab, San Diego, CA 92152 USA. RP Francese, S (reprint author), Sheffield Hallam Univ, Biomed Res Ctr, Howard St, Sheffield S1 1WB, S Yorkshire, England. EM s.francese@shu.ac.uk RI Sammon, Chris/F-5633-2014; OI Sammon, Chris/0000-0003-1714-1726; Clench, Malcolm/0000-0002-0798-831X NR 23 TC 12 Z9 12 U1 3 U2 44 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 0003-2654 J9 ANALYST JI Analyst PY 2013 VL 138 IS 9 BP 2546 EP 2557 DI 10.1039/c3an00195d PG 12 WC Chemistry, Analytical SC Chemistry GA 117NI UT WOS:000316959800008 PM 23486747 ER PT S AU Paduan, JD Washburn, L AF Paduan, Jeffrey D. Washburn, Libe BE Carlson, CA Giovannoni, SJ TI High-Frequency Radar Observations of Ocean Surface Currents SO ANNUAL REVIEW OF MARINE SCIENCE, VOL 5 SE Annual Review of Marine Science LA English DT Review; Book Chapter DE HF radar; ocean remote sensing; search and rescue; sea echo ID SOUTHERN CALIFORNIA BIGHT; CURRENT MAPPING SYSTEM; SANTA-BARBARA CHANNEL; MONTEREY BAY AREA; HF-RADAR; CURRENT VARIABILITY; DATA ASSIMILATION; PART I; MESOSCALE EDDIES; VHF PROPAGATION AB This article reviews the discovery, development, and use of high-frequency (HF) radio wave backscatter in oceanography. HF radars, as the instruments are commonly called, remotely measure ocean surface currents by exploiting a Bragg resonant backscatter phenomenon. Electromagnetic waves in the HF band (3-30 MHz) have wavelengths that are commensurate with wind-driven gravity waves on the ocean surface; the ocean waves whose wavelengths are exactly half as long as those of the broadcast radio waves are responsible for the resonant backscatter. Networks of HF radar systems are capable of mapping surface currents hourly out to ranges approaching 200 km with a horizontal resolution of a few kilometers. Such information has many uses, including search and rescue support and oil-spill mitigation in real time and larval population connectivity assessment when viewed over many years. Today, HF radar networks form the backbone of many ocean observing systems, and the data are assimilated into ocean circulation models. C1 [Paduan, Jeffrey D.] USN, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA. [Washburn, Libe] Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA. [Washburn, Libe] Univ Calif Santa Barbara, Earth Res Inst, Santa Barbara, CA 93106 USA. RP Paduan, JD (reprint author), USN, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA. EM paduan@nps.edu; washburn@eri.ucsb.edu NR 125 TC 45 Z9 45 U1 9 U2 63 PU ANNUAL REVIEWS PI PALO ALTO PA 4139 EL CAMINO WAY, PO BOX 10139, PALO ALTO, CA 94303-0897 USA SN 1941-1405 BN 978-0-8243-4505-1 J9 ANNU REV MAR SCI JI Annu. Rev. Mar. Sci. PY 2013 VL 5 BP 115 EP 136 DI 10.1146/annurev-marine-121211-172315 PG 22 WC Geochemistry & Geophysics; Marine & Freshwater Biology; Oceanography SC Geochemistry & Geophysics; Marine & Freshwater Biology; Oceanography GA BEF34 UT WOS:000316390400007 PM 22809196 ER PT S AU Dermer, CD AF Dermer, Charles D. BE Ormes, JF TI Diffuse Galactic Gamma Rays are from Shock-Accelerated Cosmic Rays SO CENTENARY SYMPOSIUM 2012: DISCOVERY OF COSMIC RAYS SE AIP Conference Proceedings LA English DT Proceedings Paper CT Centenary Symposium on Discovery of Cosmic Rays CY JUN 26-28, 2012 CL Univ Denver, Denver, CO SP Natl Sci Fdn (NSF), Univ Denver, Off Res and Sponsored Programs, Univ Denver, Div Nat Sci and Math, Univ Denver, Dept Phys and Astronomy, Stanford Univ, Kavli Inst Particle Astrophys and Cosmol (KIPAC) HO Univ Denver DE Cosmic rays; supernovae; gamma rays AB Cosmic rays are thought to be accelerated at supernova remnant (SNR) shocks, but observation of the pi(0) bump that would confirm this expectation is hampered by weak gamma-ray fluxes of SNRs, instrumental difficulties in observing low energy (less than or similar to 100 MeV) emissions, background gamma rays made from cosmic-ray interactions with gas and dust in the vicinity of SNRs, leptonic gamma rays, and gamma-ray point sources. By contrast, cosmic-ray bombardment of nearby high-latitude gas located away from known molecular cloud complexes and with small ionized hydrogen column density along the line of sight provides a less confused emission region for study. The Large Area Telescope on the Fermi Gamma-ray Space Telescope has measured a gamma-ray spectrum of high-latitude gas that reveals a low-energy cutoff corresponding to a pi(0) -> 2 gamma feature [1]. A shock-accelerated particle flux proportional to p(-s), where p is the particle momentum, follows from simple theoretical considerations of cosmic-ray acceleration at nonrelativistic shocks followed by rigidity-dependent escape into the Galactic halo. A flux of shock-accelerated cosmic-ray protons with s approximate to 2.8 provides an adequate fit to the Fermi-LAT gamma-ray emission spectrum of high-latitude gas when uncertainties in secondary nuclear production models are taken into acount. The cosmic-ray spectrum inferred from the gamma-ray emissivity spectrum is in accord with the SNR hypothesis for the origin of the cosmic rays [2]. C1 USN, Div Space Sci, Res Lab, Washington, DC 20375 USA. RP Dermer, CD (reprint author), USN, Div Space Sci, Res Lab, Code 7653,4555 Overlook Ave SW, Washington, DC 20375 USA. NR 2 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-1137-1 J9 AIP CONF PROC PY 2013 VL 1516 BP 123 EP 123 DI 10.1063/1.4792552 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BEH31 UT WOS:000316575600022 ER PT S AU Dermer, CD AF Dermer, Charles D. BE Ormes, JF TI Ultra-High Energy Cosmic Rays from Blazar Jets SO CENTENARY SYMPOSIUM 2012: DISCOVERY OF COSMIC RAYS SE AIP Conference Proceedings LA English DT Proceedings Paper CT Centenary Symposium on Discovery of Cosmic Rays CY JUN 26-28, 2012 CL Univ Denver, Denver, CO SP Natl Sci Fdn (NSF), Univ Denver, Off Res and Sponsored Programs, Univ Denver, Div Nat Sci and Math, Univ Denver, Dept Phys and Astronomy, Stanford Univ, Kavli Inst Particle Astrophys and Cosmol (KIPAC) HO Univ Denver DE Ultra-high energy cosmic rays; blazars; black holes ID EXTRAGALACTIC MAGNETIC-FIELDS; TEV BLAZARS; COSMOLOGICAL IMPACT; BRIGHT BLAZARS; NEUTRAL BEAMS; EMISSION; TELESCOPE; SPECTRA; OBJECTS; BURSTS AB In spite of major observational advances in high-energy astronomy, the problem of UHECR origin has defied solution. Nevertheless, candidate sources can be ruled out on the basis of physical arguments and available data. For example, only a few source classes remain viable after requiring that the sources of UHECRs are extragalactic, that some of the sources are found within the GZK radius, and that they have adequate emissivity to explain the UHECR intensity and adequate power to accelerate the highest energy UHECRs. Features in the gamma-ray spectra of blazars observed with Fermi at GeV energies, and with ground-based gamma-ray telescopes at very-high energies (VHE; greater than or similar to 100 GeV), favor acceleration of UHECRs in blazar black-hole jets. C1 USN, Res Lab, Div Space Sci, Washington, DC 20375 USA. RP Dermer, CD (reprint author), USN, Res Lab, Div Space Sci, Code 7653,4555 Overlook Ave SW, Washington, DC 20375 USA. NR 26 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-1137-1 J9 AIP CONF PROC PY 2013 VL 1516 BP 212 EP 216 DI 10.1063/1.4792570 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BEH31 UT WOS:000316575600040 ER PT J AU Collins, CA Margolina, T Rago, TA Ivanov, L AF Collins, Curtis A. Margolina, Tetyana Rago, Thomas A. Ivanov, Leonid TI Looping RAFOS floats in the California Current System SO DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY LA English DT Article DE Isobaric floats; California Undercurrent; California Current; Mesoscale eddies; Meddles; Topographic drag ID MEDITERRANEAN SALT LENS; NORTH-ATLANTIC; UNDERCURRENT; VARIABILITY; STABILITY; DRIFTER; EDDIES; MODELS; CENSUS AB Looping motions of RAFOS floats deployed off the Central California coast between 1992 and 2010 are described. Most floats were deployed in the California Undercurrent. Floats at 300 m were observed to loop 26% of the time, with anticyclonic rotation observed about twice as often as cyclonic rotation. Characteristics of anticyclonic rotation at 300 m included median swirl speeds of 14 cm/s for diameters of 59 km and 14-day periods. Long-lived (> 70 days and at least 8 consecutive loops) anticyclonic loopers are identified as California Undercurrent eddies (or "cuddies"). One cuddy was observed to move southwestward 1650 km over a period of 520 days before observations ended. Kinematically, cuddies are similar to Mediterranean Water eddies (meddles) in the Iberian Basin, except that meddies are somewhat stronger, larger and deeper. Over the slope, most cuddies were formed between either Pt. Sur and Pt. Reyes or Cape Mendocino and Cape Blanco. The region north of Cape Mendocino is estimated to generate six cuddles each year. These eddies form from waters on the inshore side of the California Undercurrent as they move past Cape Mendocino. Topographic drag is the most likely formation mechanism. Two of eight deep floats were observed to loop, one anticyclonically (1545 m) for 279 days and the other cyclonically (1167 m) for 192 days. Looping for these floats ended near Taney Seamounts. Published by Elsevier Ltd. C1 [Collins, Curtis A.; Margolina, Tetyana; Rago, Thomas A.; Ivanov, Leonid] USN, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA. RP Collins, CA (reprint author), USN, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA. EM collins@nps.edu FU Office of Naval Research; National Research Council; NSF [OCE-0827527, DMS-1025535 (OCE-0827160)]; Naval Postgraduate School FX These observations were sponsored by the Office of Naval Research and the Naval Postgraduate School. Newell Garfield, Skip Carter and Bob Paquette made seminal contributions to the program. L.I. and T.M. received support from the National Research Council. Support for L.I. (CC) was provided by NSF grant OCE-0827527 and DMS-1025535 (OCE-0827160). We would like to thank three anonymous reviewers and Dudley Chelton for useful comments which have considerably improved this paper. We would also like to thank Tom Rossby for his many contributions to observational oceanography, including those which have made this study possible. NR 44 TC 11 Z9 11 U1 0 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0967-0645 J9 DEEP-SEA RES PT II JI Deep-Sea Res. Part II-Top. Stud. Oceanogr. PD JAN PY 2013 VL 85 SI SI BP 42 EP 61 DI 10.1016/j.dsr2.2012.07.027 PG 20 WC Oceanography SC Oceanography GA 114AV UT WOS:000316713200005 ER PT J AU Joye, CD Calame, JP Cook, AM Garven, M AF Joye, Colin D. Calame, Jeffrey P. Cook, Alan M. Garven, Morag TI High-Power Copper Gratings for a Sheet-Beam Traveling-Wave Amplifier at G-band SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article DE Copper grating; millimeter-wave (mmW) amplifiers; photolithography; slow-wave structures ID LITHOGRAPHY; PHOTORESIST AB The design, fabrication, and electromagnetic cold testing results of an all-copper grating circuit intended for a G-band sheet-beam traveling-wave amplifier are presented. Fabrication was carried out via ultraviolet photolithography (UV-LIGA) using the SU-8 photoresists. Two cold test methods used to characterize the microfabricated circuits are reported and reveal excellent agreement with simulations. This type of all-copper grating also shows potential for use as a high-average-power sharp-cutoff filter. C1 [Joye, Colin D.; Calame, Jeffrey P.; Cook, Alan M.] USN, Res Lab, Washington, DC 20375 USA. [Garven, Morag] Sci Applicat Int Corp, Mclean, VA 22102 USA. RP Joye, CD (reprint author), USN, Res Lab, Washington, DC 20375 USA. EM colin.joye@nrl.navy.mil; jeffrey.calame@nrl.navy.mil; alan.cook@nrl.navy.mil; Morag.Garven@nrl.navy.mil RI Cook, Alan/D-2557-2013 FU U.S. Office of Naval Research FX This work was supported by the U.S. Office of Naval Research. The review of this brief was arranged by Editor R. Carter. NR 13 TC 21 Z9 23 U1 0 U2 13 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD JAN PY 2013 VL 60 IS 1 BP 506 EP 509 DI 10.1109/TED.2012.2226591 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA 115ML UT WOS:000316816200077 ER PT J AU Erlandson, JM Thomas-Barnett, L Vellanoweth, RL Schwartz, SJ Muhs, DR AF Erlandson, Jon M. Thomas-Barnett, Lisa Vellanoweth, Rene L. Schwartz, Steven J. Muhs, Daniel R. TI From the Island of the Blue Dolphins: A Unique Nineteenth-Century Cache Feature From San Nicolas Island, California SO JOURNAL OF ISLAND & COASTAL ARCHAEOLOGY LA English DT Article DE Pacific Coast; North America; globalization; colonial history; culture change; technology ID CHANNEL-ISLANDS AB A cache feature salvaged from an eroding sea cliff on San Nicolas Island produced two redwood boxes containing more than 200 artifacts of Nicoleno, Native Alaskan, and Euro-American origin. Outside the boxes were four asphaltum-coated baskets, abalone shells, a sandstone dish, and a hafted stone knife. The boxes, made from split redwood planks, contained a variety of artifacts and numerous unmodified bones and teeth from marine mammals, fish, birds, and large land mammals. Nicoleno-style artifacts include 11 knives with redwood handles and stone blades, stone projectile points, steatite ornaments and effigies, a carved stone pipe, abraders and burnishing stones, bird bone whistles, bone and shell pendants, abalone shell dishes, and two unusual barbed shell fishhooks. Artifacts of Native Alaskan style include four bone toggling harpoons, two unilaterally barbed bone harpoon heads, bone harpoon fore-shafts, a ground slate blade, and an adze blade. Objects of Euro-American origin or materials include a brass button, metal harpoon blades, and ten flaked glass bifaces. The contents of the cache feature, dating to the early-to-mid nineteenth century, provide an extraordinary window on a time of European expansion and global economic development that created unique cultural interactions and social transformations. C1 [Erlandson, Jon M.] Univ Oregon, Museum Nat & Cultural Hist, Eugene, OR 97403 USA. [Erlandson, Jon M.] Univ Oregon, Dept Anthropol, Eugene, OR 97403 USA. [Thomas-Barnett, Lisa; Schwartz, Steven J.] USN, Air Warfare Ctr, Weap Div, Range Sustainabil Off, Point Mugu Nawc, CA USA. [Vellanoweth, Rene L.] Calif State Univ Los Angeles, Dept Anthropol, Los Angeles, CA 90032 USA. [Muhs, Daniel R.] US Geol Survey, Fed Ctr, Denver, CO 80225 USA. RP Erlandson, JM (reprint author), Univ Oregon, Dept Anthropol, 308 Condon Hall, Eugene, OR 97403 USA. EM jerland@uoregon.edu OI Erlandson, Jon/0000-0002-4705-4319 NR 32 TC 0 Z9 0 U1 2 U2 8 PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXFORDSHIRE, ENGLAND SN 1556-4894 J9 J ISL COAST ARCHAEOL JI J. Isl. Coast. Archaeol. PD JAN 1 PY 2013 VL 8 IS 1 BP 66 EP 78 DI 10.1080/15564894.2013.766913 PG 13 WC Archaeology SC Archaeology GA 117CJ UT WOS:000316929400005 ER PT J AU Ortoleva, P Singharoy, A Pankavich, S AF Ortoleva, P. Singharoy, A. Pankavich, S. TI Hierarchical multiscale modeling of macromolecules and their assemblies SO SOFT MATTER LA English DT Article ID FOKKER-PLANCK EQUATION; NONLINEAR HYDRODYNAMIC EQUATIONS; NONEQUILIBRIUM BATH; BROWNIAN PARTICLES; SOFT MATTER; MOLECULAR-DYNAMICS; ORDER PARAMETERS; SIMULATION; FRICTION; SYSTEMS AB Soft materials (e. g., enveloped viruses, liposomes, membranes and supercooled liquids) simultaneously deform or display collective behaviors, while undergoing atomic scale vibrations and collisions. While the multiple space-time character of such systems often makes traditional molecular dynamics simulation impractical, a multiscale approach has been presented that allows for long-time simulation with atomic detail based on the co-evolution of slowly varying order parameters (OPs) with the quasi-equilibrium probability density of atomic configurations. However, this approach breaks down when the structural change is extreme, e. g., when nearest-neighbor connectivity between structural subsystems is not maintained. In the current study, a self-consistent approach is presented wherein OPs and a reference structure co-evolve slowly to yield long-time simulation for dynamical soft-matter phenomena such as structural transitions and self-assembly. The development begins with the Liouville equation for N classical atoms and an ansatz on the form of the associated N-atom probability density. Multiscale techniques are used to derive Langevin equations for the coupled OP-configurational dynamics. The net result is a set of equations for the coupled stochastic dynamics of the OPs and centers of mass of the subsystems that constitute a soft material body. The theory is based on an all-atom methodology and an interatomic force field, and therefore enables calibration-free simulations of soft matter, such as macromolecular assemblies. C1 [Ortoleva, P.; Singharoy, A.] Indiana Univ, Dept Chem, Ctr Cell & Virus Theory, Bloomington, IN 47405 USA. [Pankavich, S.] USN Acad, Dept Math, Annapolis, MD 21402 USA. [Pankavich, S.] Colorado Sch Mines, Dept Appl Math & Stat, Golden, CO 80401 USA. RP Pankavich, S (reprint author), USN Acad, Dept Math, Annapolis, MD 21402 USA. EM pankavic@mines.edu FU NSF CRC program; NSF Division of Mathematical Sciences [DMS-0908413, DMS-1211667]; NIH; Indiana University's College of Arts and Sciences; United States Naval Academy Research Council FX We appreciate and acknowledge the support of the NSF CRC program, the NSF Division of Mathematical Sciences (under grants DMS-0908413 and DMS-1211667), NIH, Indiana University's College of Arts and Sciences, and the United States Naval Academy Research Council. NR 56 TC 5 Z9 5 U1 0 U2 24 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X EI 1744-6848 J9 SOFT MATTER JI Soft Matter PY 2013 VL 9 IS 16 BP 4319 EP 4335 DI 10.1039/c3sm50176k PG 17 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 117LQ UT WOS:000316955300021 PM 23671457 ER PT J AU Riddle, MS Murray, JA Porter, CK AF Riddle, Mark S. Murray, Joseph A. Porter, Chad K. TI Perceived Rise in the Incidence of Celiac Disease in the US Military Maybe due to More Than One Factor Response SO AMERICAN JOURNAL OF GASTROENTEROLOGY LA English DT Letter ID PREVALENCE C1 [Riddle, Mark S.; Porter, Chad K.] USN, Enter Dis Dept, Med Res Ctr, Silver Spring, MD 20910 USA. [Murray, Joseph A.] Mayo Clin, Rochester, MN USA. RP Riddle, MS (reprint author), USN, Enter Dis Dept, Infect Dis Directorate, Med Res Ctr, 503 Robert Grant Ave, Silver Spring, MD 20910 USA. EM mark.riddle@med.navy.mil NR 5 TC 0 Z9 0 U1 0 U2 0 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA SN 0002-9270 J9 AM J GASTROENTEROL JI Am. J. Gastroenterol. PD JAN PY 2013 VL 108 IS 1 BP 144 EP 145 DI 10.1038/ajg.2012.378 PG 4 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA 107AI UT WOS:000316186600023 PM 23287948 ER PT J AU Syme, ML Delaney, E Wachen, JS Gosian, J Moye, J AF Syme, Maggie L. Delaney, Eileen Wachen, Jennifer Schuster Gosian, Jeffrey Moye, Jennifer TI Sexual Self-Esteem and Psychosocial Functioning in Military Veterans After Cancer SO JOURNAL OF PSYCHOSOCIAL ONCOLOGY LA English DT Article DE veteran; sexual self-esteem; cancer; survivorship; psychological distress ID QUALITY-OF-LIFE; BREAST-CANCER; LONG-TERM; PROSTATE-CANCER; SURVIVORS; CARE; AFFAIRS; HEALTH; MORBIDITY; INVENTORY AB Little is known about the sexual well-being of male Veteran cancer survivors, or the relationship of sexual concerns to psychosocial adaptation postcancer. This study examined the association between sexual self-esteem and psychosocial concerns in male Veteran cancer survivors. Forty-one male survivors were recruited from a Veterans Affairs (VA) hospital to participate in a pilot study addressing cancer survivorship care for Veterans. Sixty- to 90-minute interviews were conducted, assessing sociodemographic, medical, stress/burden (cancer-related posttraumatic stress disorder [PTSD], depression), and resource (social support, post-traumatic growth) variables. Twenty-one (51.2%) Veteran cancer survivors reported lowered sexual self-esteem as a result of cancer, which corresponded to significantly higher levels of depression and cancer-related PTSD. The lowered sexual self-esteem group also indicated significantly lower social support. Veteran cancer survivors with lowered sexual self-esteem tend to have higher levels of stress and lower levels of resources, putting them at risk for lowered quality of life. This increased risk highlights the importance of addressing sexual well-being in the survivorship care of Veterans. C1 [Syme, Maggie L.] San Diego State Univ, Dept Psychol, SDSU UCSD Canc Ctr Comprehens Partnership, San Diego, CA 92120 USA. [Delaney, Eileen] USN, Ctr Combat & Operat Stress Control, San Diego, CA 92152 USA. [Wachen, Jennifer Schuster] Boston Univ, Sch Med, Natl Ctr PTSD, VA Boston Healthcare Syst, Boston, MA 02118 USA. [Gosian, Jeffrey] VA Boston Healthcare Syst, Boston, MA USA. [Moye, Jennifer] Harvard Univ, Sch Med, Dept Psychiat, VA Boston Healthcare Syst, Boston, MA 02115 USA. RP Syme, ML (reprint author), San Diego State Univ, Dept Psychol, 6363 Alvarado Ct,Suite 250, San Diego, CA 92120 USA. EM maggie.mai.29@gmail.com RI Moye, Jennifer/F-2240-2017; OI Moye, Jennifer/0000-0002-3434-347X; Syme, Maggie/0000-0003-3260-5568 FU RRD VA [I01 RX000104] NR 31 TC 1 Z9 1 U1 2 U2 10 PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXFORDSHIRE, ENGLAND SN 0734-7332 J9 J PSYCHOSOC ONCOL JI J. Psychosoc. Oncol. PD JAN 1 PY 2013 VL 31 IS 1 BP 1 EP 12 DI 10.1080/07347332.2012.741096 PG 12 WC Psychology, Social SC Psychology GA 104HS UT WOS:000315983500001 PM 23311968 ER PT S AU McNelley, T Oh-Ishi, K Swaminathan, S Bradley, J Krajewski, P Taleff, E AF McNelley, Terry Oh-Ishi, Keiichiro Swaminathan, Srinivasan Bradley, John Krajewski, Paul Taleff, Eric BE Bernhart, G TI CHARACTERISTICS OF THE GBS-SDC TRANSITION DURING BI-AXIAL FORMING OF AA5083 SO SUPERPLASTICITY IN ADVANCED MATERIALS SE Materials Science Forum LA English DT Proceedings Paper CT 11th International Conference on Superplasticity in Advanced Materials (ICSAM 2012) CY JUL 03-05, 2012 CL Ecole Mines, Albi, FRANCE SP Mairie d'Albi, Conseil Gen Tarn, Conseil Regional Midi Pyrenees, Ecole Mines Albi, Inst Clement Ader, AIRBUS France, Engn Syst Int, Saint Govain SEVA, SCHULER Gmbh HO Ecole Mines DE AA5083; texture; recrystallization; solute drag creep; grain boundary sliding; biaxial deformation ID SUPERPLASTIC AA5083; MECHANISMS AB Thermomechanical processing to enable superplasticity in AA5083 materials includes cold working followed by heating prior to hot blow forming. Upon heating for forming at 450 degrees C, a B-type ({110}< 112 >) rolling texture is replaced by a near-random texture with a weak superimposed cube < 001 > orientation parallel to the sheet normal. The presence of refined grains 7 - 8 mu m in size reflects the predominance of particle-stimulated nucleation of recrystallization prior to forming. The subsequent evolution of microstructure, texture and cavitation behaviour during biaxial deformation in the solute drag creep (SD C) and grain boundary sliding (GBS) regimes will be presented. C1 [McNelley, Terry] USN, Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93940 USA. [Oh-Ishi, Keiichiro] Nagaoka Univ Technol, Dept Mech Engn, Nagaoka, Niigata 9403188, Japan. [Swaminathan, Srinivasan] GE Global Res, Bangalore 560066, Karnataka, India. [Bradley, John; Krajewski, Paul] GM Res & Dev Ctr, Warren, MI 48090 USA. [Taleff, Eric] Univ Texas Austin, Austin, TX 78712 USA. RP McNelley, T (reprint author), USN, Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93940 USA. EM tmcnelley@nps.edu; koishi@mech.nagaokaut.ac.jp; Srinivasan.Swaminathan@ge.com; John.r.bradley@gm.com; paul.e.krajewski@gm.com; taleff@mail.utexas.edu FU University of Texas Austin through a grant from General Motors, Inc.; National Research Council postdoctoral program at the Naval Postgraduate School FX Support for this work was provided by the University of Texas Austin through a grant from General Motors, Inc. K.O. and S.S. also acknowledge support from the National Research Council postdoctoral program at the Naval Postgraduate School. NR 9 TC 0 Z9 0 U1 0 U2 2 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 0255-5476 J9 MATER SCI FORUM PY 2013 VL 735 BP 43 EP + DI 10.4028/www.scientific.net/MSF.735.43 PG 2 WC Materials Science, Multidisciplinary SC Materials Science GA BEA16 UT WOS:000315829400008 ER PT J AU Strack, G Luckarift, HR Sizemore, SR Nichols, RK Farrington, KE Wu, PK Atanassov, P Biffinger, JC Johnson, GR AF Strack, Guinevere Luckarift, Heather R. Sizemore, Susan R. Nichols, Robert K. Farrington, Karen E. Wu, Peter K. Atanassov, Plamen Biffinger, Justin C. Johnson, Glenn R. TI Power generation from a hybrid biological fuel cell in seawater SO BIORESOURCE TECHNOLOGY LA English DT Article DE Microbial fuel cell; Shewanella oneidensis; Enzymatic fuel cell; Bilirubin oxidase; Multicopper oxidase ID ELECTRON-TRANSFER REACTIONS; SHEWANELLA-ONEIDENSIS; WASTE-WATER; REDUCTION; STABILITY; LACCASES; BIOFILMS; OXIDASES; SYSTEM; ANODES AB A hybrid biological fuel cell (HBFC) comprised of a microbial anode for lactate oxidation and an enzymatic cathode for oxygen reduction was constructed and then tested in a marine environment. Shewanella oneidensis DSP-10 was cultivated in laboratory medium and then fixed on a carbon felt electrode via a silica sol-gel process in order to catalyze anodic fuel cell processes. The cathode electrocatalyst was composed of bilirubin oxidase, fixed to a carbon nanotube electrode using a heterobifunctional cross linker, and then stabilized with a silica sol-gel coating. The anode and cathode half-cells provided operating potentials of -0.44 and 0.48 V, respectively (vs. Ag/AgCl). The HBFC maintained a reproducible open circuit voltage >0.7 V for 9 d in laboratory settings and sustained electrocatalytic activity for >24 h in open environment tests. Published by Elsevier Ltd. C1 [Strack, Guinevere; Luckarift, Heather R.; Sizemore, Susan R.; Nichols, Robert K.; Farrington, Karen E.; Johnson, Glenn R.] USAF, Microbiol & Appl Biochem Lab, Airbase Technol Div, Res Lab, Tyndall AFB, FL 32403 USA. [Strack, Guinevere] Oak Ridge Inst Sci & Engn, Oak Ridge, TN 37831 USA. [Luckarift, Heather R.; Sizemore, Susan R.; Nichols, Robert K.; Farrington, Karen E.] Universal Technol Corp, Dayton, OH 45432 USA. [Atanassov, Plamen] Univ New Mexico, Ctr Emerging Energy Technol, Albuquerque, NM 87131 USA. [Wu, Peter K.] Southern Oregon Univ, Dept Phys & Engn, Ashland, OR 97520 USA. [Biffinger, Justin C.] USN, Res Lab, Washington, DC 20375 USA. RP Johnson, GR (reprint author), USAF, Microbiol & Appl Biochem Lab, Airbase Technol Div, Res Lab, Tyndall AFB, FL 32403 USA. EM glenn.johnson.8@us.af.mil RI Atanassov, Plamen/G-4616-2011 FU US AFRL; Air Force Office of Scientific Research FX G. Strack was supported by an appointment to the Postgraduate Research Participation Program at the US AFRL administered by the Oak Ridge Institute for Science and Education through an inter-agency agreement between the US Department of Energy and USAFRL. The AFRL in-house research was supported in part by the Air Force Office of Scientific Research (Walt Kozumbo, Program Manager). NRL thank NRL/ONR BLK 6.2 funding for supporting the autonomous floating demonstration. The authors thank Marie Stephens (Mexico Beach, FL) for providing underwater photography, Kevin Randall and Jamie Vathis for use of watercraft, and Christopher Graeber (Integration Innovation, Inc., Huntsville, AL) for logistical support and open water test operations. NR 31 TC 10 Z9 10 U1 3 U2 43 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0960-8524 J9 BIORESOURCE TECHNOL JI Bioresour. Technol. PD JAN PY 2013 VL 128 BP 222 EP 228 DI 10.1016/j.biortech.2012.10.104 PG 7 WC Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels SC Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels GA 098JO UT WOS:000315545800031 PM 23196242 ER PT J AU Yankaskas, K AF Yankaskas, Kurt TI Prelude: Noise-induced tinnitus and hearing loss in the military SO HEARING RESEARCH LA English DT Article ID SPEECH-INTELLIGIBILITY; AIRCRAFT NOISE; HEALTH-RISK; ANNOYANCE; DEPRESSION; SEVERITY; PROTECTION; PERSONNEL; VETERANS; EXPOSURE AB Hearing is critical to the performance of military personnel and is integral to the rapid and accurate processing of speech information. Thus, noise-induced hearing loss (NIHL) represents a severe impairment that reduces military effectiveness, safety, and quality of life. With the high levels of noise to which military personnel are exposed and the limited protection afforded by hearing conservation programs, it should be no surprise that annual Veterans Affairs disability payments for tinnitus and hearing loss exceeded $1.2 billion for 2009 and continue to increase. Military personnel work in high-noise environments, yet the Department of Defense (DoD) cannot predict who is susceptible to noise-induced hearing loss and tinnitus. Of those exposed to noise, 80% may also suffer from chronic tinnitus. Despite its prevalence, there are no means to objectively measure the severity of tinnitus in those individuals. A fundamental understanding of the underlying mechanisms of tinnitus and its relation to noise-induced hearing loss is critical. Such an understanding may provide insight to who is at risk for each condition, allow aggressive hearing protection measures in those individuals most at risk, and create areas for treatment for those already suffering from the conditions. The current review will address the scope of the problems of NIHL and tinnitus for the military, discuss the noise environments in which military personnel operate, describe the hearing conservation measures currently in place, and the challenges those programs face. Some recent breakthroughs in NIHL research will be discussed along with some challenges and directions for future research on NIHL and tinnitus. Published by Elsevier B.V. C1 Off Naval Res, Noise Induced Hearing Loss Program, Arlington, VA 22203 USA. RP Yankaskas, K (reprint author), Off Naval Res, Noise Induced Hearing Loss Program, Code 342,875 N Randolph St, Arlington, VA 22203 USA. EM kurt.d.yankaskas@navy.mil NR 51 TC 29 Z9 29 U1 3 U2 30 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-5955 J9 HEARING RES JI Hear. Res. PD JAN PY 2013 VL 295 BP 3 EP 8 DI 10.1016/j.heares.2012.04.016 PG 6 WC Audiology & Speech-Language Pathology; Neurosciences; Otorhinolaryngology SC Audiology & Speech-Language Pathology; Neurosciences & Neurology; Otorhinolaryngology GA 098NX UT WOS:000315557100002 PM 22575206 ER PT J AU DeSavage, SA Davis, JP Narducci, FA AF DeSavage, S. A. Davis, J. P. Narducci, F. A. TI Controlling Raman resonances with magnetic fields SO JOURNAL OF MODERN OPTICS LA English DT Article DE Raman resonances; cold atoms ID MAGNETOMETER ATOM INTERFEROMETER; GYROSCOPE AB We utilize the tools already presented in a previous publication [DeSavage, S.A; Gordon, K.H; Clifton, E.M.; Davis, J.P.; Narducci, F.A. J. Mod. Opt. 2011, 58 (21), 2028--2035] to theoretically and experimentally investigate in detail Raman transitions in a sample of laser cooled 85Rb. Using cross-linearly polarized Raman fields, we find that, for an arbitrarily oriented magnetic field, the Raman spectrum consists of up to eleven peaks. However, by judicious choice of magnetic field direction, the spectrum can be reduced to a five peaked spectrum (transverse magnetic field) or a six peaked spectrum (longitudinal magnetic field). We present cases in which the full spectrum can not be thought of as the incoherent sum of the five and six peaked spectra. C1 [DeSavage, S. A.] Aerosp Mass Properties Anal Inc, N Wales, PA 19454 USA. [Davis, J. P.; Narducci, F. A.] USN, Air Syst Command, EO Sensors Div, Patuxent River, MD 20670 USA. RP Narducci, FA (reprint author), USN, Air Syst Command, EO Sensors Div, Bldg 2187,Suite 3190,48110 Shaw Rd, Patuxent River, MD 20670 USA. EM frank@aps.org FU Office of Naval Research [N000421WX20313] FX We acknowledge financial support from the Office of Naval Research (Section 219 grant and Grant N000421WX20313). We gratefully acknowledge the laboratory assistance from Jeanette Wood. Two of us (JPD and FAN) gratefully acknowledge useful discussions with Michael Larsen. NR 16 TC 3 Z9 3 U1 0 U2 10 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0950-0340 J9 J MOD OPTIC JI J. Mod. Opt. PD JAN 1 PY 2013 VL 60 IS 1 SI SI BP 95 EP 102 DI 10.1080/09500340.2012.761738 PG 8 WC Optics SC Optics GA 101JD UT WOS:000315770400013 ER PT J AU Nissen, ME Bergin, RD AF Nissen, Mark E. Bergin, Richard D. TI Knowledge Work Through Social Media Applications: Team Performance Implications of Immersive Virtual Worlds SO JOURNAL OF ORGANIZATIONAL COMPUTING AND ELECTRONIC COMMERCE LA English DT Article DE competitive advantage; immersiveness; information systems; knowledge exchange; presence; social media; technological intermediation; virtual world ID DYNAMIC THEORY; ENVIRONMENTS; FIRM; TASKS AB Knowledge is key to competitive advantage, and the social reach of knowledge can amplify its power in terms of organizational performance. Leveraging such amplification, social media applications are expected broadly to improve the performance of organizational work, which highlights teams, groups, and organizations as particularly appropriate units of analysis. The technological intermediation of knowledge work within and among such social aggregations of people remains a complex endeavor, however. This pertains in particular to immersive, 3D environments supporting virtual social and game worlds. As with other social media applications, such virtual worlds can amplify knowledge broadly, but they also offer potential to approach the sensations of face-to-face (F2F) interaction in terms of presence, copresence, psychological engrossment, and affective experience. In this exploratory study, we employ both quantitative and qualitative research techniques to investigate how teamwork performed through virtual worlds can approach that accomplished via F2F interactions. This leads to important findings, insights, guidelines, and suggestions for expanded research as well as enhanced practice. C1 [Nissen, Mark E.; Bergin, Richard D.] USN, Postgrad Sch, Monterey, CA 93943 USA. [Nissen, Mark E.] USN, Postgrad Sch, Edge Ctr, Monterey, CA 93943 USA. RP Nissen, ME (reprint author), USN, Postgrad Sch, Grad Sch Operat & Informat Sci, 1411 Cunningham Rd,Room GW2006, Monterey, CA 93943 USA. EM MNissen@nps.edu NR 69 TC 2 Z9 2 U1 3 U2 29 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1091-9392 J9 J ORG COMP ELECT COM JI J. Organ. Comp. Electron. Commer. PD JAN 1 PY 2013 VL 23 IS 1-2 SI SI BP 84 EP 109 DI 10.1080/10919392.2013.748612 PG 26 WC Computer Science, Information Systems; Computer Science, Interdisciplinary Applications SC Computer Science GA 098YP UT WOS:000315585300005 ER PT J AU McLay, RN Loeffler, GH Wynn, GH AF McLay, Robert N. Loeffler, George H. Wynn, Gary H. TI Research Methodology for the Study of Complementary and Alternative Medicine in the Treatment of Military PTSD SO PSYCHIATRIC ANNALS LA English DT Article ID POSTTRAUMATIC-STRESS-DISORDER; MEMORY; WATER C1 [McLay, Robert N.] USN, San Diego Med Ctr, Directorate Mental Hlth, Dept Mental Hlth, San Diego, CA 92122 USA. [McLay, Robert N.; Loeffler, George H.] USN, San Diego Med Ctr, Directorate Mental Hlth, San Diego, CA 92122 USA. [Wynn, Gary H.] Walter Reed Army Inst Res, Ctr Mil Psychiat & Neurosci, Silver Spring, MD USA. RP McLay, RN (reprint author), USN, San Diego Med Ctr, Directorate Mental Hlth, 4370 La Jolla Village Dr,Suite 400, San Diego, CA 92122 USA. EM robert.mcclay@med.navy.mil NR 36 TC 1 Z9 1 U1 5 U2 13 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0048-5713 J9 PSYCHIAT ANN JI Psychiatr. Ann. PD JAN PY 2013 VL 43 IS 1 BP 38 EP 43 DI 10.3928/00485713-20130109-09 PG 6 WC Psychiatry SC Psychiatry GA 099OB UT WOS:000315630000009 ER PT J AU Kearney, B Alves, F Grbovic, D Karunasiri, G AF Kearney, Brian Alves, Fabio Grbovic, Dragoslav Karunasiri, Gamani TI Al/SiOx/Al single and multiband metamaterial absorbers for terahertz sensor applications SO OPTICAL ENGINEERING LA English DT Article DE terahertz; metamaterial; perfect absorber; thermal sensor ID QUANTUM CASCADE LASER; FOCAL-PLANE ARRAY; REAL-TIME; BAND; WAVE; TRANSMISSION; ANGLE AB To increase the sensitivity of uncooled thermal sensors in the terahertz (THz) spectral range (1 to 10 THz), we investigated thin metamaterial layers exhibiting resonant absorption in this region. These metamaterial films are comprised of periodic arrays of aluminum (Al) squares and an Al ground plane separated by a thin silicon-rich silicon oxide (SiOx) dielectric film. These standard MEMS materials are also suitable for fabrication of bi-material and microbolometer thermal sensors. Using SiOx instead of SiO2 reduced the residual stress of the metamaterial film. Finite element simulations were performed to establish the design criteria for very thin films with high absorption and spectral tunability. Single-band structures with varying SiOx thicknesses, square size, and periodicity were fabricated and found to absorb nearly 100% at the designed frequencies between three and eight THz. Multiband absorbing structures were fabricated with two or three distinct peaks or a single-broad absorption band. Experimental results indicate that is possible to design very efficient thin THz absorbing films to match specific applications. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. [DOI: 10.1117/1.OE.52.1.013801] C1 [Kearney, Brian; Alves, Fabio; Grbovic, Dragoslav; Karunasiri, Gamani] USN, Postgrad Sch, Monterey, CA 93943 USA. RP Kearney, B (reprint author), USN, Postgrad Sch, Bldg 232,Room 204B,833 Dyer Rd, Monterey, CA 93943 USA. EM karunasiri@nps.edu FU Oak Ridge National Laboratory (ONR); Office of Basic Energy Sciences, U.S. Department of Energy FX This work is supported, in part, through a grant from the Oak Ridge National Laboratory (ONR). The authors would like to thank Raymond Ng, Nick Lavrik, Jay Adeff, and Sam Barone for technical assistance. A portion of this research was conducted at the Center for Nanophase Materials Sciences, which is sponsored at ORN Laboratory by the Office of Basic Energy Sciences, U.S. Department of Energy. NR 31 TC 18 Z9 18 U1 3 U2 58 PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD JAN PY 2013 VL 52 IS 1 AR 013801 DI 10.1117/1.OE.52.1.013801 PG 8 WC Optics SC Optics GA 092VY UT WOS:000315152300013 ER PT J AU Wolford, MF Myers, MC Hegeler, F Sethian, JD AF Wolford, Matthew F. Myers, Matthew C. Hegeler, Frank Sethian, John D. TI NOx removal with multiple pulsed electron beam free of catalysts or reagents SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID KRF LASER; EMISSIONS; IRRADIATION; POLLUTION; NITROGEN; MIXTURE; GASES; SO2 AB A catalyst free approach for nitrogen oxides (NOx) removal has been developed at the United States Naval Research Laboratory. Our goals were to assess the ability of pulsed electron beam to enhance NOx removal at potential lower capital cost with greater efficiency than other large scale NOx removal methods. Removal efficiency over 95% has been attained for NOx concentrations of 1000 parts per million (ppm), 500 ppm and 200 ppm in nitrogen atmosphere. The NOx concentration dropped from 204 ppm to below 4.8 ppm after 10 shots supplying a total dose of 65 kGy. The resultant chemicals after catalyst free pulsed electron beam processing of NOx are nitrogen and oxygen, same as components of air. Pulsed electron beams in a catalyst free approach remove a larger percentage of NOx than continuous wave electron beam with a catalyst. Catalyst free approach removes issues of handling, collecting, transporting and efficiently distributing chemical byproducts. Pulsed electron beams are as efficient as continuous wave electron beams for small removal percentages and have a significant advantage at higher fractional removal percentages of NOx. Preferential destruction of NO species relative to the removal of NO2 species is observed in the pulsed electron beam reaction chamber. The energy required to remove a kilogram of NOx is nearly the same at pressures of 1.16 atmospheres and 1.02 atmospheres. C1 [Wolford, Matthew F.; Myers, Matthew C.; Sethian, John D.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Hegeler, Frank] Commonwealth Technol Inc, Alexandria, VA USA. RP Wolford, MF (reprint author), USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA. RI Wolford, Matthew/D-5834-2013 OI Wolford, Matthew/0000-0002-8624-1336 NR 20 TC 8 Z9 8 U1 1 U2 21 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2013 VL 15 IS 12 BP 4422 EP 4427 DI 10.1039/c3cp50436k PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 096NM UT WOS:000315411200040 PM 23417142 ER PT J AU Arkes, J AF Arkes, Jeremy TI The Temporal Effects of Parental Divorce on Youth Substance Use SO SUBSTANCE USE & MISUSE LA English DT Article DE divorce; drug use; substance use; adolescent; teenage ID ADOLESCENT MARIJUANA USE; FAMILY-STRUCTURE; MARITAL DISRUPTION; CANNABIS USE; DRUG-USE; CHILDREN; METAANALYSIS; ADJUSTMENT; CONFLICT AB This article examines how the parental divorce process affects youth substance use at various stages relative to the divorce. With child-fixed-effect models and a baseline period that is long before the divorce, the estimates rely on within-child changes over time. Youth are more likely to use alcohol 2-4 years before a parental divorce. After the divorce, youth have an increased risk of using alcohol and marijuana, with the effect for marijuana being 12.1 percentage points in the two years right after the divorce (p = .010). The magnitudes of the effects persist as time passes from the divorce. C1 USN, Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93940 USA. RP Arkes, J (reprint author), USN, Postgrad Sch, Grad Sch Business & Publ Policy, 555 Dyer Rd, Monterey, CA 93940 USA. EM arkes@nps.edu NR 22 TC 7 Z9 7 U1 4 U2 57 PU INFORMA HEALTHCARE PI LONDON PA TELEPHONE HOUSE, 69-77 PAUL STREET, LONDON EC2A 4LQ, ENGLAND SN 1082-6084 J9 SUBST USE MISUSE JI Subst. Use Misuse PY 2013 VL 48 IS 3 BP 290 EP 297 DI 10.3109/10826084.2012.755703 PG 8 WC Substance Abuse; Psychiatry; Psychology SC Substance Abuse; Psychiatry; Psychology GA 096MY UT WOS:000315409600011 PM 23363082 ER PT B AU Coelho, DH Hoffer, M AF Coelho, Daniel H. Hoffer, Michael BE Zasler, ND Katz, DI Zafonte, RD TI Audiologic Impairment SO BRAIN INJURY MEDICINE: PRINCIPLES AND PRACTICE, SECOND EDITION LA English DT Article; Book Chapter ID TEMPORAL BONE-FRACTURES; TRAUMATIC BRAIN-INJURY; TRANSCRANIAL MAGNETIC STIMULATION; TYMPANIC MEMBRANE PERFORATIONS; PROGRESSIVE HEARING-LOSS; OUTER HAIR-CELLS; BLAST INJURY; TINNITUS TREATMENT; HEAD-INJURY; NOISE C1 [Coelho, Daniel H.] Univ Connecticut, Storrs, CT USA. [Hoffer, Michael] USN, San Diego Med Ctr, Dept Otolaryngol, San Diego, CA 92152 USA. RP Coelho, DH (reprint author), Univ Connecticut, Storrs, CT USA. NR 74 TC 1 Z9 1 U1 0 U2 3 PU DEMOS MEDICAL PUBLICATIONS PI NEW YORK PA 11 WEST 42ND STREET, 15TH FLOOR, NEW YORK, NY 10036 USA BN 978-1-936287-27-7 PY 2013 BP 769 EP 778 PG 10 WC Clinical Neurology SC Neurosciences & Neurology GA BDJ25 UT WOS:000313536100046 ER PT J AU Giachetti, RE Damodaran, P Mestry, S Prada, C AF Giachetti, Ronald E. Damodaran, Purush Mestry, Sid Prada, Claudia TI Optimization-based decision support system for crew scheduling in the cruise industry SO COMPUTERS & INDUSTRIAL ENGINEERING LA English DT Article DE Crew scheduling; Optimization; Decision support system; Scheduling system; Goal programming ID ASSIGNMENT PROBLEM AB Crew members on cruise ships are hired in a global labor market, and a major cost for cruise lines is moving crew members from their home cities to the cruise ship's departure port. Complicating the crew scheduling problem is the uncertainty due to no-shows, terminations, and other reasons for crew to terminate their contract prematurely. To address this problem, this paper describes a scheduling system that implements a two-stage planning process that first determines overbooking levels for the number of crew to offer contracts to, and then second, a goal integer programming formulation to minimize the movement cost of assigning crew to ships while maintaining adequate crew levels and a desired crew region composition. We solve actual-sized problems characteristic of the cruise industry in a reasonably short amount of time. Experiments comparing the actual crew movement costs to the system's projected crew movement costs show that the scheduling system can consistently reduce the movement costs in the range of 9-23%, better maintain desired crew levels, and better maintain desired crew region composition. Published by Elsevier Ltd. C1 [Giachetti, Ronald E.] USN, Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA. [Damodaran, Purush] No Illinois Univ, Dept Ind & Syst Engn, De Kalb, IL 60115 USA. [Mestry, Sid; Prada, Claudia] Florida Int Univ, Dept Ind & Syst Engn, Miami, FL 33174 USA. RP Giachetti, RE (reprint author), USN, Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA. EM regiache@nps.edu NR 13 TC 1 Z9 1 U1 0 U2 15 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0360-8352 J9 COMPUT IND ENG JI Comput. Ind. Eng. PD JAN PY 2013 VL 64 IS 1 BP 500 EP 510 DI 10.1016/j.cie.2012.08.011 PG 11 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial SC Computer Science; Engineering GA 095BK UT WOS:000315309300046 ER PT J AU Mansour, AM ElKoutby, M El Barbary, MM Mohamed, W Shehata, S El Mohammady, H Mostafa, M Riddle, MS Sebeny, PJ Young, SYN Abdel-Messih, I AF Mansour, Adel M. ElKoutby, Montasser El Barbary, Mohamed M. Mohamed, Wissam Shehata, Sameh El Mohammady, Hanan Mostafa, Manal Riddle, Mark S. Sebeny, Peter J. Young, Sylvia Y. N. Abdel-Messih, Ibrahim TI Enteric viral infections as potential risk factors for intussusception SO JOURNAL OF INFECTION IN DEVELOPING COUNTRIES LA English DT Article DE intussusception; adenovirus; rotavirus ID NATURAL ROTAVIRUS INFECTION; YOUNG-CHILDREN; CHILDHOOD INTUSSUSCEPTION; POLIO VACCINE; INFANTS; DIARRHEA; ADENOVIRUS; EGYPT; IMMUNIZATION; ASSOCIATION AB Introduction: We aimed to identify potential risk factors for intussusception (ISS) among children presenting to two pediatric hospitals in Egypt. Methodology: In this case-control study, enrolled children < 3 years old with ISS (confirmed radiologically and/or surgically) were matched by age and gender to controls admitted with acute non-abdominal surgical illnesses. Stool samples were collected and tested for various enteric bacteria, rotavirus, enteric adenoviruses (EA, 40 and 41) and astroviruses using commercially available ELISA diagnostic kits. Results: From December 2004 to May 2009, 158 cases and 425 matched controls were enrolled. A history of diarrhoea and cough over the preceding four weeks of interview were more common in cases than controls, respectively. Children with mothers who had secondary education and above were 2.2 times more likely to have ISS than those whose mothers had a lower level of education. In spite of the low detection rate of EA infection (regardless of diarrhoea history) and asymptomatic rotavirus infection, they were detected in higher frequencies in cases than controls; however, infection with astrovirus and bacterial pathogens did not appear to be associated with increased risk of ISS. Conclusions: History of diarrhoea and cough over the four weeks preceding the study and maternal education above secondary level were potential risk factors for ISS. EA and asymptomatic rotavirus infection were detected in higher frequencies among cases than controls; however, association with ISS cannot be confirmed. Additional research is needed to confirm these findings and evaluate the pathogenesis which may link such infections with ISS. C1 [Mansour, Adel M.; El Mohammady, Hanan; Mostafa, Manal; Sebeny, Peter J.; Abdel-Messih, Ibrahim] US Naval Med Res Unit 3, Bacteriol & Parasitol Dis Res Program, Cairo, Egypt. [ElKoutby, Montasser; El Barbary, Mohamed M.; Mohamed, Wissam] Cairo Univ, Pediat Surg Dept, Cairo, Egypt. [Shehata, Sameh] Univ Alexandria, Pediat Surg Dept, Alexandria, Egypt. [Riddle, Mark S.] USN, Med Res Ctr, Silver Spring, MD USA. [Young, Sylvia Y. N.] USN, Environm & Prevent Med Unit 6, Honolulu, HI USA. [Mansour, Adel M.; Abdel-Messih, Ibrahim] Novartis Vaccines & Diagnost, Siena, Italy. RP Mansour, AM (reprint author), US Naval Med Res Unit 3, Bacteriol & Parasitol Dis Res Program, NAMRU 3,PSC 452,Box 5000,FPO AE 09835, Cairo, Egypt. EM Adel.mansour.eg@med.navy.mil RI Valle, Ruben/A-7512-2013; OI Shehata, Sameh/0000-0003-4329-0100 FU AFHSC/Div of GEIS work unit [6000.RAD1.D.E0301] FX We would like to acknowledge the research teams at Cairo and Ain Shams University and U.S. Naval Medical Research Unit-3, for their hard work and commitment. Also, we would like to thank all patients and their families for their patience. Finally, we would like to acknowledge our funding agent, who made this work possible; work was funded by AFHSC/Div of GEIS work unit 6000.RAD1.D.E0301. NR 39 TC 10 Z9 11 U1 0 U2 1 PU J INFECTION DEVELOPING COUNTRIES PI TRAMANIGLIO PA JIDC CENT OFF PORTO CONTE RICERCHE RES CTR, S P 55, PORTO CONTE CAPO CACCIA KM 8.400 LOC, TRAMANIGLIO, 07041, ITALY SN 1972-2680 J9 J INFECT DEV COUNTR JI J. Infect. Dev. Ctries. PD JAN PY 2013 VL 7 IS 1 BP 28 EP 35 PG 8 WC Infectious Diseases SC Infectious Diseases GA 092IZ UT WOS:000315115300005 PM 23324817 ER PT J AU Sun, PF Kochel, TJ AF Sun, Peifang Kochel, Tadeusz J. TI The Battle between Infection and Host Immune Responses of Dengue Virus and Its Implication in Dengue Disease Pathogenesis SO SCIENTIFIC WORLD JOURNAL LA English DT Review ID HUMAN DENDRITIC CELLS; BLOOD MONONUCLEAR-CELLS; HEMORRHAGIC-FEVER; HEPARAN-SULFATE; VIRAL REPLICATION; IN-VITRO; CYTOKINE PRODUCTION; ENDOTHELIAL-CELLS; ANTIBODY-RESPONSE; INDUCED APOPTOSIS AB Dengue virus (DENV) is a mosquito-transmitted single stranded RNA virus belonging to genus Flavivirus. The virus is endemic in the tropical and subtropical countries of the world, causing diseases classified according to symptoms and severity (from mild to severe) as dengue fever, dengue hemorrhagic fever, and dengue shock syndrome. Among a variety of human cell types targeted by DENV, monocytes, macrophages, and dendritic cells are members of innate immunity, capable of mounting rapid inflammatory responses. These cells are also major antigen presenting cells, responsible for activating the adaptive immunity for long-term memory. This paper is an overview of the current understanding of the following mutually affected aspects: DENV structure, viral infectivity, cellular receptors, innate immune response, and adaptive immunity. C1 [Sun, Peifang] Henry M Jackson Fdn Adv Mil Med, Bethesda, MD 20817 USA. [Kochel, Tadeusz J.] USN, Dept Viral & Rickettsial Dis, Med Res Ctr, Silver Spring, MD 20910 USA. RP Sun, PF (reprint author), Henry M Jackson Fdn Adv Mil Med, Bethesda, MD 20817 USA. EM peifang.sun@med.navy.mil FU MIDRP [S0210_09] FX This work is supported by The MIDRP funding: S0210_09. The views expressed in this paper are those of the authors and do not necessarily reflect the official policy or position of the Department of the Navy, Department of Defense, or the US Government. T. Kochel is amilitary servicemember. This work was prepared as part of his official duties. Title 17 USC 105 provides that "Copyright protection under this title is not available for any work of the United States Government." Title 17 USC 101 defines a US Government work as a work prepared by amilitary service member or employee of the US Government as part of that person's official duties. NR 109 TC 15 Z9 18 U1 2 U2 26 PU HINDAWI PUBLISHING CORPORATION PI NEW YORK PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA SN 1537-744X J9 SCI WORLD J JI Sci. World J. PY 2013 AR 843469 DI 10.1155/2013/843469 PG 11 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 094PF UT WOS:000315275600001 ER PT J AU Engelstad, A Janssen, T Herbers, THC van Vledder, G Elgar, S Raubenheimer, B Trainor, L Garcia-Garcia, A AF Engelstad, Anita Janssen, Tim Herbers, T. H. C. van Vledder, Gerbrant Elgar, Steve Raubenheimer, Britt Trainor, Lincoln Garcia-Garcia, Ana TI Wave evolution across the Louisiana shelf SO CONTINENTAL SHELF RESEARCH LA English DT Article DE Wave-mud interaction; Fetch-limted wave growth; Wave damping; Louisiana shelf; Atchafalaya mud plume ID INNER CONTINENTAL-SHELF; GULF-OF-MEXICO; SEDIMENT TRANSPORT; ATCHAFALAYA RIVER; SHALLOW-WATER; WIND-SEA; DISSIPATION; MODEL; GROWTH; BOTTOM AB Observations and third-generation wave model hindcasts of ocean surface gravity waves propagating across the Louisiana shelf show that the effects of the mud environment on wave evolution are complex and episodic. Whereas low-frequency waves (0.04-0.20 Hz) show a consistent decay similar to earlier studies, the presence of mud also appears to suppress the development of short waves (0.20-0.25 Hz) under fetch-limited growth conditions. Significant suppression of wave development under wind-forced conditions is found to occur almost exclusively during easterly winds when satellite images show the Atchafalaya mud plume extends into the study area. These results suggest that episodic sediment suspension events with high mud concentrations in the upper water column can affect the evolution of wind waves. (c) 2012 Elsevier Ltd. All rights reserved. C1 [Engelstad, Anita] San Francisco State Univ, Dept Geosci, San Francisco, CA 94132 USA. [Janssen, Tim] Theiss Res, La Jolla, CA 92037 USA. [Herbers, T. H. C.] USN, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA. [van Vledder, Gerbrant] Delft Univ Technol, Environm Fluid Mech Sect, NL-2600 GA Delft, Netherlands. [Elgar, Steve; Raubenheimer, Britt] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA. [Trainor, Lincoln] Royal Australian Navy, Canberra, ACT, Australia. [Garcia-Garcia, Ana] Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA. RP Engelstad, A (reprint author), San Francisco State Univ, Dept Geosci, San Francisco, CA 94132 USA. EM anitaengel@gmx.net NR 36 TC 1 Z9 1 U1 2 U2 14 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0278-4343 J9 CONT SHELF RES JI Cont. Shelf Res. PD JAN 1 PY 2013 VL 52 BP 190 EP 202 DI 10.1016/j.csr.2012.10.005 PG 13 WC Oceanography SC Oceanography GA 090WK UT WOS:000315010500016 ER PT J AU Sassin, MB Greenbaum, SG Stallworth, PE Mansour, AN Hahn, BP Pettigrew, KA Rolison, DR Long, JW AF Sassin, Megan B. Greenbaum, Steve G. Stallworth, Phillip E. Mansour, Azzam N. Hahn, Benjamin P. Pettigrew, Katherine A. Rolison, Debra R. Long, Jeffrey W. TI Achieving electrochemical capacitor functionality from nanoscale LiMn2O4 coatings on 3-D carbon nanoarchitectures SO JOURNAL OF MATERIALS CHEMISTRY A LA English DT Article ID RECHARGEABLE LITHIUM BATTERIES; X-RAY-ABSORPTION; LI-ION BATTERIES; GOOD CYCLING PERFORMANCE; HIGH-RATE CAPABILITY; CATHODE MATERIALS; AQUEOUS-ELECTROLYTES; MANGANESE OXIDE; ENERGY-STORAGE; SPINEL LIMN2O4 AB Conformal nanoscale coatings of Na+-birnessite manganese oxide (MnOx) produced via redox reaction between aqueous permanganate (NaMnO4 center dot H2O) and the carbon surfaces of fiber-paper-supported carbon nanofoams are converted to LiMn2O4 spinel through topotactic exchange of Na+ for Li+ in the as-deposited lamellar birnessite, followed by mild thermal treatments to complete the transformation to LiMn2O4. The evolution of the birnessite-to-spinel conversion is verified with X-ray diffraction, solid-state nuclear magnetic resonance, X-ray absorption spectroscopy, electron microscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. The mild conditions used to convert birnessite to spinel ensure that the conformal nanoscale nature of the oxide coating is retained throughout the macroscopically thick (170 mu m) carbon nanofoam substrate during the conversion process. The architecture of the LiMn2O4-carbon nanofoam facilitates rapid ion/electron transport, enabling the LiMn2O4 to insert and extract Li+ from aqueous electrolytes at scan rates as high as 25 mV s(-1), and with a relaxation time of 37 s as derived from electrochemical impedance. This architectural expression of nanoscale LiMn2O4 delivers full theoretical capacity (148 mA h g(-1)) at 2 mV s(-1). C1 [Sassin, Megan B.; Rolison, Debra R.; Long, Jeffrey W.] USN, Res Lab, Surface Chem Branch Code 6170, Washington, DC 20375 USA. [Greenbaum, Steve G.; Stallworth, Phillip E.] CUNY Hunter Coll, New York, NY 10065 USA. [Mansour, Azzam N.] USN, Ctr Surface Warfare, Carderock Div, Bethesda, MD 20817 USA. [Hahn, Benjamin P.; Pettigrew, Katherine A.] Nova Res Inc, Alexandria, VA 22308 USA. RP Sassin, MB (reprint author), USN, Res Lab, Surface Chem Branch Code 6170, Washington, DC 20375 USA. EM megan.sassin@nrl.navy.mil; steve.greenbaum@hunter.cuny.edu; phillipstall@netscape.net; azzam.mansour@navy.mil; hahnbp@gmail.com; kapettigrew@gmail.com; rolison@nrl.navy.mil; jeffrey.long@nrl.navy.mil FU U.S. Office of Naval Research; National Research Council; U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886] FX This work was supported by the U.S. Office of Naval Research. B. P. H acknowledges the National Research Council for a post-doctoral fellowship (2009-2012). The XAS experiments were conducted at the National Synchrotron Light Source of Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Office of Basic Energy Sciences, under contract no. DE-AC02-98CH10886. NR 64 TC 10 Z9 10 U1 8 U2 87 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2050-7488 J9 J MATER CHEM A JI J. Mater. Chem. A PY 2013 VL 1 IS 7 BP 2431 EP 2440 DI 10.1039/c2ta00937d PG 10 WC Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Energy & Fuels; Materials Science GA 085VT UT WOS:000314643100011 ER PT J AU Brown, L Joyce, P AF Brown, Lloyd Joyce, Peter TI Functionally Graded Bronze/Tungsten-Carbide Castings: A Characterization and Property Study SO JOURNAL OF TESTING AND EVALUATION LA English DT Article DE metal matrix composite; functionally graded composite; conducting alloys; mechanical properties; material properties; resistivity; conductivity ID DEFORMATION; COMPOSITES; PRESSURE AB The contact resistance and wear behavior of electrical contact surfaces is a function of hardness, applied load, and material constituents. This work presents a characterization of the mechanical and physical properties of conducting alloys fabricated as functionally graded metal matrix composites (MMCs), in particular, tungsten-carbide-filled bronze. Tungsten-carbide reinforcing particles are attractive in this application for their high hardness and concomitant wear resistance. When used as bushings, bearings, and sleeve materials, bronze has improved wear performance with the addition of tungsten-carbide particles, which improves the hardness of the contact surface. Bronze might also be attractive as a potential electrical conductor when a need exists for high-strength, wear-resistant contact surfaces as found in circuit breakers and sliding electrical contacts. An overview of two types of MMC production methods, sedimentation and centrifugal casting, is presented. MMCs fabricated using the two different methods are compared and contrasted based on physical and mechanical properties. The use of centrifugal casting provides a more effective improvement in physical and mechanical properties plus significant improvement in hardness with relatively low reduction in base-material conductivity was observed. The centrifugal casting method allows for a more tailored product in terms of locating enhanced material properties within the casting. C1 [Brown, Lloyd; Joyce, Peter] USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA. RP Brown, L (reprint author), USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA. EM lbrown@usna.edu; pjoyce@usna.edu OI Joyce, Peter/0000-0001-6774-2170 FU Office of Naval Research (ONR) [N0001411WX20307] FX The writers thank the following United States Naval Academy personnel for the many efforts exerted on behalf of this research effort. In particular, Dr. Angela Moran, Cort Lillard, Derek Baker, Matt Stanley, and Steve Crutchley were all instrumental to the success of this effort. Additionally, A. P. "Dave" Divecha and Dr. Bill Ferrando, staff metallurgists of the Naval Surface Warfare Center (NSWC), Carderock, Maryland, are acknowledged for graciously providing numerous samples for testing. Naval Academy Midshipmen Michael Gobble, Andrea Lazzaro, Sean Margot, and Dro Gregorian must be noted for the diligent research they conducted in support of this study. Funding for this research comes in part from Office of Naval Research (ONR) Contract No. N0001411WX20307. NR 16 TC 0 Z9 0 U1 0 U2 12 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0090-3973 J9 J TEST EVAL JI J. Test. Eval. PD JAN PY 2013 VL 41 IS 1 BP 22 EP 31 DI 10.1520/JTE104109 PG 10 WC Materials Science, Characterization & Testing SC Materials Science GA 090VW UT WOS:000315009100003 ER PT J AU Kehne, DM Karasik, M Aglitsky, Y Smyth, Z Terrell, S Weaver, JL Chan, Y Lehmberg, RH Obenschain, SP AF Kehne, D. M. Karasik, M. Aglitsky, Y. Smyth, Z. Terrell, S. Weaver, J. L. Chan, Y. Lehmberg, R. H. Obenschain, S. P. TI Implementation of focal zooming on the Nike KrF laser SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID INDUCED SPATIAL INCOHERENCE; FUSION LASERS; NONUNIFORMITIES; PROFILES AB In direct drive inertial confinement laser fusion, a pellet containing D-T fuel is imploded by ablation arising from absorption of laser energy at its outer surface. For optimal coupling, the focal spot of the laser would continuously decrease to match the reduction in the pellet's diameter, thereby minimizing wasted energy. A krypton-fluoride laser (lambda = 248 nm) that incorporates beam smoothing by induced spatial incoherence has the ability to produce a high quality focal profile whose diameter varies with time, a property known as focal zooming. A two-stage focal zoom has been demonstrated on the Nike laser at the Naval Research Laboratory. In the experiment, a 4.4 ns laser pulse was created in which the on-target focal spot diameter was 1.3 mm (full width at half maximum) for the first 2.4 ns and 0.28 mm for the final 2 ns. These two diameters appear in time-integrated focal plane equivalent images taken at several locations in the amplification chain. Eight of the zoomed output beams were overlapped on a 60 mu m thick planar polystyrene target. Time resolved images of self-emission from the rear of the target show the separate shocks launched by the two corresponding laser focal diameters. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789313] C1 [Kehne, D. M.; Karasik, M.; Weaver, J. L.; Chan, Y.; Obenschain, S. P.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Aglitsky, Y.] Sci Applicat Int Corp, Mclean, VA 22150 USA. [Smyth, Z.; Lehmberg, R. H.] Res Support Instruments Inc, Lanham, MD 20706 USA. [Terrell, S.] Commonwealth Technol Inc, Alexandria, VA 22315 USA. RP Kehne, DM (reprint author), USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA. FU U.S. Department of Energy FX The authors would like to thank Nike personnel, B. Jenkins, R. Dicht, L. Granger, S. Krafsig, and J. Picciotta for their technical support. This work was supported by the U.S. Department of Energy. NR 12 TC 6 Z9 8 U1 0 U2 14 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JAN PY 2013 VL 84 IS 1 AR 013509 DI 10.1063/1.4789313 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 086ZH UT WOS:000314729100023 PM 23387652 ER PT J AU Walters, AP Didoszak, JM Kwon, YW AF Walters, A. P. Didoszak, J. M. Kwon, Y. W. TI Explicit modeling of solid ocean floor in shallow underwater explosions SO SHOCK AND VIBRATION LA English DT Article DE Underwater explosion; ocean floor modeling; shallow water; fluid structure interaction AB Current practices for modeling the ocean floor in underwater explosion simulations call for application of an inviscid fluid with soil properties. A method for modeling the ocean floor as a Lagrangian solid, vice an Eulerian fluid, was developed in order to determine its effects on underwater explosions in shallow water using the DYSMAS solver. The Lagrangian solid bottom model utilized transmitting boundary segments, exterior nodal forces acting as constraints, and the application of prestress to minimize any distortions into the fluid domain. For simplicity, elastic materials were used in this current effort, though multiple constitutive soil models can be applied to improve the overall accuracy of the model. Even though this method is unable to account for soil cratering effects, it does however provide the distinct advantage of modeling contoured ocean floors such as dredged channels and sloped bottoms absent in Eulerian formulations. The study conducted here showed significant differences among the initial bottom reflections for the different solid bottom contours that were modeled. The most important bottom contour effect was the distortion to the gas bubble and its associated first pulse timing. In addition to its utility in bottom modeling, implementation of the non-reflecting boundary along with realistic material models can be used to drastically reduce the size of current fluid domains. C1 [Walters, A. P.; Didoszak, J. M.; Kwon, Y. W.] USN, Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA. RP Didoszak, JM (reprint author), USN, Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. EM jmdidosz@nps.edu NR 16 TC 0 Z9 0 U1 0 U2 12 PU IOS PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 1070-9622 J9 SHOCK VIB JI Shock Vib. PY 2013 VL 20 IS 1 BP 189 EP 197 DI 10.3233/SAV-2012-0737 PG 9 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA 089ET UT WOS:000314893500015 ER PT J AU Robinson, JT Schmucker, SW Diaconescu, CB Long, JP Culbertson, JC Ohta, T Friedman, AL Beechem, TE AF Robinson, Jeremy T. Schmucker, Scott W. Diaconescu, C. Bogdan Long, James P. Culbertson, James C. Ohta, Taisuke Friedman, Adam L. Beechem, Thomas E. TI Electronic Hybridization of Large-Area Stacked Graphene Films SO ACS NANO LA English DT Article DE twisted bilayer graphene; interlayer coupling; absorption; functionalization ID CHEMICAL-VAPOR-DEPOSITION; BILAYER GRAPHENE; LAYERS; HETEROSTRUCTURES; GROWTH; CARBON AB Direct, tunable coupling between individually assembled graphene layers is a next step toward designer two-dimensional (2D) crystal systems, with relevance for fundamental studies and technological applications. Here we describe the fabrication and characterization of large-area (>cm(2)), coupled bilayer graphene on SiO2/Si substrates. Stacking two graphene films leads to direct electronic interactions between layers, where the resulting film properties are determined by the local twist angle. Polycrystalline bilayer films have a "stained-glass window" appearance explained by the emergence of a narrow absorption band in the visible spectrum that depends on twist angle. Direct measurement of layer orientation via electron diffraction, together with Raman and optical spectroscopy, confirms the persistence of clean interfaces over large areas. Finally, we demonstrate that interlayer coupling can be reversibly turned off through chemical modification, enabling optical-based chemical detection schemes. Together, these results suggest that 2D crystals can be individually assembled to form electronically coupled systems suitable for large-scale applications. C1 [Robinson, Jeremy T.; Schmucker, Scott W.; Long, James P.; Culbertson, James C.; Friedman, Adam L.] USN, Res Lab, Washington, DC 20007 USA. [Diaconescu, C. Bogdan; Ohta, Taisuke; Beechem, Thomas E.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Robinson, JT (reprint author), USN, Res Lab, Washington, DC 20007 USA. EM jeremy.robinson@nrl.navy.mil RI Friedman, Adam/D-9610-2011; Robinson, Jeremy/F-2748-2010; Schmucker, Scott/D-8312-2012 OI Friedman, Adam/0000-0003-0597-5432; Schmucker, Scott/0000-0003-2908-5282 FU Office of Naval Research; NRL's Nanoscience Institute; National Research Council; U.S. DOE Office of Basic Energy Sciences (BES), Division of Materials Science and Engineering; Sandia LDRD; U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX The work at the Naval Research Laboratory was supported by the Office of Naval Research and NRL's Nanoscience Institute. J.T.R. is grateful for continued technical support from D. Zapotok and D. St Amand and C.D. Cress for assistance with Graphic Design. This research was performed while S.W.S held a National Research Council Research Associateship Award at the Naval Research Laboratory. The work at Sandia National Laboratories was supported by the U.S. DOE Office of Basic Energy Sciences (BES), Division of Materials Science and Engineering and by Sandia LDRD. Sandia National Laboratories is a multiprogram 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 51 TC 32 Z9 32 U1 6 U2 80 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 JAN PY 2013 VL 7 IS 1 BP 637 EP 644 DI 10.1021/nn304834p PG 8 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 078FB UT WOS:000314082800067 PM 23240977 ER PT J AU Ban-Weiss, G Wray, C Delp, W Ly, P Akbari, H Levinson, R AF Ban-Weiss, George Wray, Craig Delp, Woody Ly, Peter Akbari, Hashem Levinson, Ronnen TI Electricity production and cooling energy savings from installation of a building-integrated photovoltaic roof on an office building SO ENERGY AND BUILDINGS LA English DT Article DE Photovoltaic; Building integrated photovoltaic (BIPV); Building energy; White roof; Reflective roof; Building heat transfer ID AIR-QUALITY; SOLAR REFLECTANCE; ALBEDO; IMPACTS AB Reflective roofs can reduce demand for air conditioning and warming of the atmosphere. Roofs can also host photovoltaic (PV) modules that convert sunlight to electricity. In this study we assess the effects of installing a building integrated photovoltaic (BIPV) roof on an office building in Yuma, AZ. The system consists of thin film PV laminated to a white membrane, which lies above a layer of insulation. The solar absorptance of the roof decreased to 0.38 from 0.75 after installation of the BIPV, lowering summertime daily mean roof upper surface temperatures by about 5 degrees C. Summertime daily heat influx through the roof deck fell to +/- 0.1 kWh/m(2) from 0.3-1.0 kWh/m(2). However, summertime daily heat flux from the ventilated attic into the conditioned space was minimally affected by the BIPV, suggesting that the roof was decoupled from the conditioned space. Daily PV energy production was about 25% of building electrical energy use in the summer. For this building the primary benefit of the BIPV appeared to be its capacity to generate electricity and not its ability to reduce heat flows into the building. Building energy simulations were used to estimate the cooling energy savings and heating energy penalties for more typical buildings. (c) 2012 Elsevier B.V. All rights reserved. C1 [Ban-Weiss, George; Wray, Craig; Delp, Woody; Levinson, Ronnen] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. [Ly, Peter] USN, Naval Facil Engn & Expeditionary Ctr, Port Hueneme, CA 93043 USA. [Akbari, Hashem] Concordia Univ, Dept Bldg Civil & Environm Engn, Montreal, PQ, Canada. RP Ban-Weiss, G (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM georgebw@berkeley.edu OI Ban-Weiss, George/0000-0001-8211-2628 FU Department of Defense Environmental Security Technology Certification Program [SI-200813]; Energy Efficiency and Renewable Energy, Office of Building Technology, State, and Community Programs, of the U.S. Department of Energy [DE-AC02-05CH11231] FX This work was supported by the Department of Defense Environmental Security Technology Certification Program under Project No. SI-200813. It was also supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Building Technology, State, and Community Programs, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. We wish to thank Luke O'Dea of Unisolar for technical information on the PV; Michael Boyd and Ronald Durfey of MCAS Yuma for technical assistance; and Jordan Woods of Lawrence Berkeley National Laboratory. NR 25 TC 13 Z9 13 U1 1 U2 28 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0378-7788 J9 ENERG BUILDINGS JI Energy Build. PD JAN PY 2013 VL 56 BP 210 EP 220 DI 10.1016/j.enbuild.2012.06.032 PG 11 WC Construction & Building Technology; Energy & Fuels; Engineering, Civil SC Construction & Building Technology; Energy & Fuels; Engineering GA 082FU UT WOS:000314378500024 ER PT J AU Frolov, S Kudela, RM Bellingham, JG AF Frolov, Sergey Kudela, Raphael M. Bellingham, James G. TI Monitoring of harmful algal blooms in the era of diminishing resources: A case study of the U.S. West Coast SO HARMFUL ALGAE LA English DT Article DE Harmful algal blooms; US West Coast; Observational system design ID SAMPLE PROCESSOR ESP; NORTHERN CALIFORNIA; NEARSHORE RETENTION; SOUTHERN CALIFORNIA; WASHINGTON COAST; PSEUDO-NITZSCHIA; CHLOROPHYLL; TRANSPORT; PATTERNS; SYSTEM AB Spatial and temporal decorrelation scales in phytoplankton bloom magnitudes are reviewed with the goal of informing the design of efficient and informative observing networks for monitoring of potentially harmful algal blooms (HABs) along the U.S. West Coast. Our analysis of historic MODIS Fluorescent Line Height data shows that, unlike several previous studies, seasonal timing of phytoplankton blooms off the U.S. West Coast propagates from South to North. In situ data show that temporal decorrelation scales are shortest off Northern California (similar to 4 days) and longest in the Southern California Bight (similar to 17 days). In a cross-shore direction, we find that variability in the near-shore biomass is decoupled from biomass further offshore (similar to 2-4 km). Our review of the cloud cover gap statistics suggests that satellite data provide reasonably inexpensive information about bloom events, particularly at seasonal to inter-annual scales, but is insufficient to capture many event-scale blooms. Absent adequate satellite data, in situ monitoring becomes essential. Existing networks of automated monitoring sites from piers and moorings off the California coast is insufficient to describe regional variability in blooms, but is likely informative of bloom magnitudes in the immediate proximity of observation stations. We suggest that a more effective network will have a combination of shore-based stations and a few (5-10) offshore moorings. Shore-based stations should be located in proximity to sensitive HAB targets. This would provide monitoring of existing conditions and guide decision-making about beach closures and aquaculture management practices. Offshore stations can serve as proxy for regional conditions and can be used to issue early warnings of potential HAB conditions developing in a specific region. (C) 2012 Elsevier B.V. All rights reserved. C1 [Frolov, Sergey; Bellingham, James G.] Monterey Bay Aquarium Res Inst, Moss Landing, CA 95039 USA. [Kudela, Raphael M.] Univ Calif Santa Cruz, Ocean Sci Dept, Santa Cruz, CA 95064 USA. [Frolov, Sergey] USN, Univ Corp Atmospher Res, Res Lab, Monterey, CA 93493 USA. RP Frolov, S (reprint author), USN, Univ Corp Atmospher Res, Res Lab, 7 Grace Hopper Av, Monterey, CA 93493 USA. EM frolovsa@gmail.com OI Frolov, Sergey/0000-0002-9081-1979 FU David and Lucile Packard Foundation; Office of Naval Research (ONR) [N00014-10-1-0424]; NASA Ocean Biology and Biogeochemistry Program [NNX09AT01G]; California Sea Grant; California Ocean Protection Council [R/OPCCONT-12 A 10]; NOAA CSCOR [NA09NOS4780209]; NOAA MERHAB [NA04NOS4780239] FX Financial support for SF and JGB contribution was provided by the David and Lucile Packard Foundation and the Office of Naval Research (ONR) under grant (N00014-10-1-0424). Financial support for RMK contribution was provided by the NASA Ocean Biology and Biogeochemistry Program award NNX09AT01G, California Sea Grant and California Ocean Protection Council award R/OPCCONT-12 A 10, the PNWTOX program funded by NOAA CSCOR (award NA09NOS4780209), and the Cal-PReEMPT program funded by NOAA MERHAB (NA04NOS4780239). Satellite data were provided by the NASA Ocean Color Processing Group. This is NOAA ECOHAB publication # 723, MERHAB # 166, and PNWTOX # 7, and is a contribution to the GEOHAB Core Research Project on HABs in Upwelling Systems. [SS] NR 45 TC 17 Z9 17 U1 2 U2 44 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1568-9883 J9 HARMFUL ALGAE JI Harmful Algae PD JAN PY 2013 VL 21-22 BP 1 EP 12 DI 10.1016/j.hal.2012.11.001 PG 12 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA 084QI UT WOS:000314553800001 ER PT J AU Trinkunas, H AF Trinkunas, Harold TI The Soldier and the Changing State: Building Democratic Armies in Africa, Asia, Europe, and the Americas SO JOURNAL OF DEMOCRACY LA English DT Book Review C1 [Trinkunas, Harold] USN, Postgrad Sch, Dept Natl Secur Affairs, Monterey, CA USA. RP Trinkunas, H (reprint author), USN, Postgrad Sch, Dept Natl Secur Affairs, Monterey, CA USA. NR 1 TC 0 Z9 0 U1 1 U2 2 PU JOHNS HOPKINS UNIV PRESS PI BALTIMORE PA JOURNALS PUBLISHING DIVISION, 2715 NORTH CHARLES ST, BALTIMORE, MD 21218-4363 USA SN 1045-5736 J9 J DEMOCR JI J. Democr. PD JAN PY 2013 VL 24 IS 1 BP 172 EP 175 PG 4 WC Political Science SC Government & Law GA 074VQ UT WOS:000313843200018 ER PT J AU Zhang, YQ Parrish, DA Shreeve, JM AF Zhang, Yanqiang Parrish, Damon A. Shreeve, Jean'ne M. TI Derivatives of 5-nitro-1,2,3-2H-triazole - high performance energetic materials SO JOURNAL OF MATERIALS CHEMISTRY A LA English DT Article ID SALTS AB The energetic derivatives of 5-nitro-1,2,3-2H-triazole, which include 2-(methyl or amino)-4-(nitramino, azido, or nitro)-5-nitro-1,2,3-2H-triazoles, were prepared in moderate yields, and confirmed with NMR and IR spectroscopy, and elemental analysis. Their key properties, viz., melting and decomposition temperatures, densities, detonation pressures and velocities, and impact sensitivities, were measured or calculated. Among the new derivatives, 2-amino-4,5-dinitro-1,2,3-2H-triazole exhibits properties (T-m, 94 degrees C; T-d, 190 degrees C; rho, 1.83 g cm(-3); P, 36.2 Gpa, v(D), 8843 m s(-1), IS, 24 J), comparable with RDX (T-m, 205 degrees C; T-d, 230 degrees C; rho, 1.80 g cm(-3); P, 35.0 Gpa, v(D), 8762 m s(-1), IS, 7.5 J), and may have potential as a high-performance energetic material. C1 [Zhang, Yanqiang; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA. [Parrish, Damon A.] USN, Res Lab, Washington, DC 20375 USA. RP Zhang, YQ (reprint author), Univ Idaho, Dept Chem, Moscow, ID 83844 USA. EM jshreeve@uidaho.edu OI zhang, yan qiang/0000-0001-5577-0529 FU ONR [N00014-12-1-0536, N00014-11-AF-0-0002] FX The authors gratefully acknowledge the support of ONR (N00014-12-1-0536); (N00014-11-AF-0-0002). NR 32 TC 54 Z9 55 U1 2 U2 50 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2050-7488 J9 J MATER CHEM A JI J. Mater. Chem. A PY 2013 VL 1 IS 3 BP 585 EP 593 DI 10.1039/c2ta00136e PG 9 WC Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Energy & Fuels; Materials Science GA 085RN UT WOS:000314632100021 ER PT J AU He, CL Zhang, JH Parrish, DA Shreeve, JM AF He, Chunlin Zhang, Jiaheng Parrish, Damon A. Shreeve, Jean'ne M. TI 4-Chloro-3,5-dinitropyrazole: a precursor for promising insensitive energetic compounds SO JOURNAL OF MATERIALS CHEMISTRY A LA English DT Article ID N-NITROPYRAZOLES; SALTS; REARRANGEMENT; PYRAZOLES; 4-AMINO-3,5-DINITRO-1H-PYRAZOLE; 3,4,5-TRINITRO-1H-PYRAZOLE; 3,5-DINITROPYRAZOLES; HYDRAZINE; HYDROGEN; DESIGN AB A series of 3,5-dinitropyrazole derivatives was prepared from 4-chloro-3,5-dinitropyrazole in good yields and characterized by IR, H-1, and C-13 NMR (some cases N-15 NMR) spectroscopy, elemental analysis, and DSC. The structures of 7 and 13 were confirmed by single crystal X-ray diffraction. The impact sensitivity was determined using a standard BAM method, and detonation properties were obtained using experimental densities and calculated heats of formation. C1 [He, Chunlin; Zhang, Jiaheng; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA. [Parrish, Damon A.] USN, Res Lab, Washington, DC 20375 USA. RP He, CL (reprint author), Univ Idaho, Dept Chem, Moscow, ID 83844 USA. EM jshreeve@uidhao.edu FU Office of Naval Research [N00014-12-1-0536, N00014-11-AF-0-0002]; Defense Threat Reduction Agency [HDTRA1-11-1-0034] FX This work was supported by the Office of Naval Research (N00014-12-1-0536 to C. H., J. Z., and J. M. S.; N00014-11-AF-0-0002 to D. A. P.), and the Defense Threat Reduction Agency (HDTRA1-11-1-0034 - C. H., J. Z. and J. M. S.). NR 42 TC 37 Z9 38 U1 3 U2 36 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2050-7488 J9 J MATER CHEM A JI J. Mater. Chem. A PY 2013 VL 1 IS 8 BP 2863 EP 2868 DI 10.1039/c2ta01359b PG 6 WC Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Energy & Fuels; Materials Science GA 085XE UT WOS:000314646800021 ER PT J AU Sassin, MB Hoag, CP Willis, BT Kucko, NW Rolison, DR Long, JW AF Sassin, Megan B. Hoag, Cheyne P. Willis, Bradley T. Kucko, Nathan W. Rolison, Debra R. Long, Jeffrey W. TI Designing high-performance electrochemical energy-storage nanoarchitectures to balance rate and capacity SO NANOSCALE LA English DT Article ID DOUBLE-LAYER CAPACITORS; ORDERED MESOPOROUS CARBONS; ELECTROLESS DEPOSITION; MANGANESE OXIDE; NANOSCALE MNO2; CHARGE STORAGE; PORE LENGTH; SUPERCAPACITORS; BEHAVIOR; FORMALDEHYDE AB The impressive specific capacitance and high-rate performance reported for many nanometric charge-storing films on planar substrates cannot impact a technology space beyond microdevices unless such performance translates into a macroscale form factor. In this report, we explore how the nanoscale-to-macroscale properties of the electrode architecture (pore size/distribution, void volume, thickness) define energy and power performance when scaled to technologically relevant dimensions. Our test bed is a device-ready electrode architecture in which scalable, manufacturable carbon nanofoam papers with tunable pore sizes (5-200 nm) and thickness (100-300 mm) are painted with similar to 10 nm coatings of manganese oxide (MnOx). The quantity of capacitance and the rate at which it is delivered for four different MnOx-C variants was assessed by fabricating symmetric electrochemical capacitors using a concentrated aqueous electrolyte. Carbon nanofoam papers containing primarily 10-20 nm mesopores support high MnOx loadings (60 wt%) and device-level capacitance (30 F g(-1)), but the small mesoporous network hinders electrolyte transport and the low void volume restricts the quantity of charge-compensating ions within the electrode, making the full capacitance only accessible at slow rates (5 mV s(-1)). Carbon nanofoam papers with macropores (100-200 nm) facilitate high rate operation (50 mV s(-1)), but deliver significantly lower device capacitance (13 F g(-1)) as a result of lower MnOx loadings (41 wt%). Devices comprising MnOx-carbon nanofoams with interconnecting networks of meso-and macropores balance capacitance and rate performance, delivering 33 F g(-1) at 5 mV s(-1) and 23 F g(-1) at 50 mV s(-1). The use of carbon nanofoam papers with size-tunable pore structures and thickness provides the opportunity to engineer the electrode architecture to deliver scalable quantities of capacitance (F cm(-2)) in tens of seconds with a single device. C1 [Sassin, Megan B.; Hoag, Cheyne P.; Willis, Bradley T.; Kucko, Nathan W.; Rolison, Debra R.; Long, Jeffrey W.] USN, Res Lab, Surface Chem Branch, Code 6170, Washington, DC 20375 USA. RP Sassin, MB (reprint author), USN, Res Lab, Surface Chem Branch, Code 6170, Washington, DC 20375 USA. EM megan.sassin@nrl.navy.mil; jeffrey.long@nrl.navy.mil RI Kucko, Nathan/K-8589-2015 NR 46 TC 10 Z9 10 U1 3 U2 59 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2040-3364 J9 NANOSCALE JI Nanoscale PY 2013 VL 5 IS 4 BP 1649 EP 1657 DI 10.1039/c2nr34044e PG 9 WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 083PM UT WOS:000314477300051 PM 23334529 ER PT J AU Smith, RK Montgomery, MT AF Smith, Roger K. Montgomery, Michael T. TI How important is the isothermal expansion effect in elevating equivalent potential temperature in the hurricane inner core? SO QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY LA English DT Article DE thermodynamic structure; surface fluxes; GRIP; hurricane Earl ID SEA INTERACTION THEORY; SELF-STRATIFICATION; TROPICAL CYCLONES; PART I; MODEL AB We examine aspects of the thermodynamic structure of mature Atlantic hurricane Earl (2010) based on airborne dropwindsondes released from the upper troposphere during the National Aeronautics and Space Administration (NASA), Genesis and Rapid Intensification Processes (GRIP) experiment. Vertical sounding profiles of the data raise questions concerning the relative roles of isothermal expansion and relative humidity increase in elevating the equivalent potential temperature of air parcels spiralling inwards to the eyewall convection region. The observational results obtained for two successive days of this category 4 hurricane show that the isothermal expansion effect leads to roughly one half of the increment in equivalent potential temperature for boundary-layer air parcels moving between the region outside the eyewall and the eyewall and eye region. Copyright (c) 2012 Royal Meteorological Society C1 [Smith, Roger K.] Univ Munich, Inst Meteorol, D-80333 Munich, Germany. [Montgomery, Michael T.] USN, Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA. RP Smith, RK (reprint author), Univ Munich, Inst Meteorol, Theresienstr 37, D-80333 Munich, Germany. EM rogerksmith@online.de FU NASA [NNH09AK561, NNG11PK021, NNG09HG031]; NSF [AGS-0733380]; German Research Council (Deutsche Forschungsgemeinschaft) [SM30-25] FX This article was written during a productive and enjoyable visit to the Bureau of Meteorology's Regional Forecasting Centre in Darwin, Australia, in January 2012 and we thank Dr Andrew Tupper for hosting our visit and providing a supportive atmosphere for conducting our research. The article was stimulated by an anonymous reviewer of another article who asked us to use colours to highlight the differences between eyewall and outer-core soundings for mature hurricane Earl (!). We acknowledge NASA and Ramesh Kakar for their support of the GRIP experiment. MTM acknowledges the support of NSF AGS-0733380 and NASA grants NNH09AK561, NNG11PK021 and NNG09HG031. RKS acknowledges financial support for tropical-cyclone research from the German Research Council (Deutsche Forschungsgemeinschaft) under grant number SM30-25. NR 14 TC 6 Z9 6 U1 0 U2 7 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-9009 J9 Q J ROY METEOR SOC JI Q. J. R. Meteorol. Soc. PD JAN PY 2013 VL 139 IS 670 BP 70 EP 74 DI 10.1002/qj.1969 PN A PG 5 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 087JQ UT WOS:000314758000006 ER PT J AU Daescu, DN Langland, RH AF Daescu, Dacian N. Langland, Rolf H. TI Error covariance sensitivity and impact estimation with adjoint 4D-Var: theoretical aspects and first applications to NAVDAS-AR SO QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY LA English DT Article DE estimation theory; error correlations; observing system experiments; optimization ID DATA ASSIMILATION SYSTEM; VARIATIONAL DATA ASSIMILATION; NUMERICAL WEATHER PREDICTION; MICROWAVE IMAGER RADIANCES; CURRENT SOUNDER RADIANCES; ENSEMBLE KALMAN FILTER; BACKGROUND-ERROR; MODEL; FORECAST; STATISTICS AB This article presents the adjoint-data assimilation system (adjoint-DAS) approach to evaluate the forecast sensitivity with respect to the specification of the observation-error covariance (R-sensitivity) and background-error covariance (B-sensitivity) in a four-dimensional variational (4D-Var) DAS with a single outer-loop iteration. Computationally efficient estimates to the forecast impact of adjustments in the error covariance models are obtained by exploiting the mathematical properties of the R- and B-sensitivity matrices and their relationship with the observation sensitivity vector. An additional contribution of this work is that it establishes a synergistic link between various methodologies to analyze the DAS performance: observation sensitivity and impact assessment, error covariance sensitivity, and a posteriori diagnosis. The practical ability to obtain sensitivity information with respect to R- and B-parameters is presented with the adjoint versions of the Naval Research Laboratory Atmospheric Variational Data Assimilation SystemAccelerated Representer (NAVDAS-AR) and the Navy Operational Global Atmospheric Prediction System (NOGAPS). The adjoint approach is used to provide guidance on the forecast impact of weighting the radiance data in the DAS according to observation-error variance estimates derived from an a posteriori diagnosis. The results indicate that information extracted from both error covariance diagnosis and sensitivity analysis is necessary to design parameter tuning procedures that are effective in reducing the forecast errors. Copyright (c) 2012 Royal Meteorological Society C1 [Daescu, Dacian N.] Portland State Univ, Portland, OR 97207 USA. [Langland, Rolf H.] USN, Res Lab, Marine Meteorol Div, Monterey, CA USA. RP Daescu, DN (reprint author), Portland State Univ, POB 751, Portland, OR 97207 USA. EM daescu@pdx.edu FU Naval Research Laboratory Atmospheric Effects, Analysis, and Prediction BAA [75-09-01, N00173-10-1-G032]; National Science Foundation [DMS-0914937]; ONR [PE-0602435N] FX The work of D. N. Daescu was supported by the Naval Research Laboratory Atmospheric Effects, Analysis, and Prediction BAA #75-09-01 under award N00173-10-1-G032 and by the National Science Foundation under award DMS-0914937. Support for the second author from the sponsor ONR PE-0602435N is gratefully acknowledged. NR 63 TC 5 Z9 5 U1 1 U2 11 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0035-9009 J9 Q J ROY METEOR SOC JI Q. J. R. Meteorol. Soc. PD JAN PY 2013 VL 139 IS 670 BP 226 EP 241 DI 10.1002/qj.1943 PN A PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 087JQ UT WOS:000314758000017 ER PT J AU LeBlanc, J Gardner, N Shukla, A AF LeBlanc, James Gardner, Nate Shukla, Arun TI Effect of polyurea coatings on the response of curved E-Glass/Vinyl ester composite panels to underwater explosive loading SO COMPOSITES PART B-ENGINEERING LA English DT Article DE Glass fibers; Damage tolerance; Impact behavior; Damage mechanics; Polyurea ID SQUARE PLATES; DEFORMATION; IMPACT AB The effects of polyurea coatings on the response of E-Glass/Vinyl ester curved composite panels subjected to underwater explosive loading has been studied. The thickness and location of the polyurea coating has been varied to determine how these parameters affect the transient response. The composite material is a 0 degrees/90 degrees biaxial layup and the coatings are applied to either the loaded or non-loaded faces. The current work utilizes a conical shock tube facility which produces shock loading conditions equivalent to the underwater detonation of an explosive charge. The transient response of the plates is recorded using a three-dimensional (3D) Digital Image Correlation system, consisting of high-speed photography and specialized post processing software. The results show that for a given polyurea thickness, better performance is obtained when the back face of the panel is coated. Similarly the performance is improved as the coating thickness is increased; however this comes at a cost in terms of increased areal weight. The results show that there is likely an optimal coating thickness, that when located on the back face, provides a balanced tradeoff between panel performance and weight increase. Published by Elsevier Ltd. C1 [LeBlanc, James] USN, Undersea Warfare Ctr, Div Newport, Newport, RI 02841 USA. [Gardner, Nate; Shukla, Arun] Univ Rhode Isl, Kingston, RI 02881 USA. RP LeBlanc, J (reprint author), USN, Undersea Warfare Ctr, Div Newport, 1176 Howell St, Newport, RI 02841 USA. EM JAMES.M.LEBLANC@Navy.mil FU Naval Undersea Warfare Center (Division Newport) In-house Laboratory Independent Research program (ILIR); Office of Naval Research under ONR [N00014-10-1-0662] FX The financial support of the Naval Undersea Warfare Center (Division Newport) In-house Laboratory Independent Research program (ILIR) directed by Dr. Anthony Ruffa is greatly acknowledged. Arun Shukla would like to acknowledge the support of Office of Naval Research under ONR Grant No. N00014-10-1-0662 (Dr. Y.D.S. Rajapakse) to the University of Rhode Island. Bruce Booker, Steve Morin, and Jim Sinclair are thanked for their operation of the shock tube facility. Lastly the authors acknowledge Specialty Products, Inc., specifically Shere Bush, for providing the polyurea material used in this study. NR 21 TC 13 Z9 13 U1 1 U2 28 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1359-8368 J9 COMPOS PART B-ENG JI Compos. Pt. B-Eng. PD JAN PY 2013 VL 44 IS 1 BP 565 EP 574 DI 10.1016/j.compositesb.2012.02.038 PG 10 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA 074ZS UT WOS:000313854200068 ER PT J AU Yasinsac, A Irvine, C AF Yasinsac, Alec Irvine, Cynthia TI Help! Is There a Trustworthy-Systems Doctor in the House? SO IEEE SECURITY & PRIVACY LA English DT Editorial Material C1 [Yasinsac, Alec] Univ S Alabama, Sch Comp, Mobile, AL 36688 USA. [Irvine, Cynthia] Naval Postgrad Sch, Monterey, CA USA. RP Yasinsac, A (reprint author), Univ S Alabama, Sch Comp, Mobile, AL 36688 USA. EM yasinsac@southalabama.edu; irvine@nps.edu NR 4 TC 1 Z9 1 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA SN 1540-7993 J9 IEEE SECUR PRIV JI IEEE Secur. Priv. PD JAN-FEB PY 2013 VL 11 IS 1 BP 73 EP 77 PG 5 WC Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA 080QE UT WOS:000314257500013 ER PT J AU McKenna, SP Parkman, KB Perren, LJ McKenna, JR AF McKenna, Sean P. Parkman, Kevin B. Perren, Lee J. McKenna, Jason R. TI Automatic Detection of a Subsurface Wire Using an Electromagnetic Gradiometer SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article DE Buried object detection; correlation; detection algorithms; electromagnetic induction (EMI) ID UNDERGROUND TUNNELS; FREQUENCY; CONDUCTOR; IDENTIFICATION AB A model-based correlation detection scheme is presented with the aim of detecting and localizing subsurface tunnel infrastructure in an automated fashion. Our goal is to develop a comprehensive detection technology that can be fielded and successfully used by nonexperts, while simultaneously being sufficiently robust as to be effective. Our correlation detection algorithm relies on a library of model signals that are generated using an analytical model of a thin subsurface wire in a homogeneous half-space. The wire is illuminated using an active transmitter source (12, 20, or 200 kHz), and its response is sensed using a man-portable electromagnetic gradiometer (EMG) system. The performance of the detector is assessed using synthetic data and receiver operating characteristic (ROC) analysis as well as experimental data collected during a field test. Preliminary ROC results indicate that at sufficient signal-to-noise ratio, the detector can achieve detection probabilities greater than 0.9 with corresponding false alarm rates of less than one every 1000 m. Results from the field tests revealed that the responses from the EMG can be used to detect and localize (to within 0.5 m in the horizontal) a wire target down to a depth of at least 7 m. We believe the EMG system and correlation detector combine to form a promising technology for detecting tunnel infrastructure that can be used by experts and, more importantly, nonexperts as well. C1 [McKenna, Sean P.] USN, Postgrad Sch, Monterey, CA 93943 USA. [Parkman, Kevin B.] USA, Engineer Res & Dev Ctr, Vicksburg, MS 39180 USA. [Perren, Lee J.] Bevilacqua Res Corp, Huntsville, AL 35805 USA. [McKenna, Jason R.] USA, Engineer Res & Dev Ctr, Topog Engn Ctr, Alexandria, VA 22315 USA. RP McKenna, SP (reprint author), USN, Postgrad Sch, Monterey, CA 93943 USA. EM spmckenn@nps.edu; Kevin.B.Parkman@usace.army.mil; Lee.J.Perren@usace.army.mil; jason.r.mckenna@usace.army.mil FU U.S. Army Engineer Research and Development Center under the Rapid Reaction Tunnel Detection Program FX Funding for this research was provided by the U.S. Army Engineer Research and Development Center under the Rapid Reaction Tunnel Detection Program. The Director, Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center granted permission to publish. NR 26 TC 2 Z9 2 U1 1 U2 17 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0196-2892 J9 IEEE T GEOSCI REMOTE JI IEEE Trans. Geosci. Remote Sensing PD JAN PY 2013 VL 51 IS 1 BP 132 EP 139 DI 10.1109/TGRS.2012.2201162 PN 1 PG 8 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA 076NR UT WOS:000313963700015 ER PT J AU Hellum, A Mukherjee, R Benard, A Hull, AJ AF Hellum, Aren Mukherjee, Ranjan Benard, Andre Hull, Andrew J. TI Modeling and simulation of the dynamics of a submersible propelled by a fluttering fluid-conveying tail SO JOURNAL OF FLUIDS AND STRUCTURES LA English DT Article DE Fluid-conveying pipe; Flutter instability; Fish propulsion; Non-inertial reference frame; External flow; Thrust; Time-varying flow; Asymmetric flutter ID SWIMMING PROPULSION; DRAG REDUCTION; SLENDER FISH; LOCOMOTION; DOLPHIN AB A submersible consisting of a flexible fluid-conveying tail affixed to a rigid head is described and equations which account for all accelerations and rotations of the submersible within a plane are derived. Solution of these equations with a finite-difference method provides evidence that this type of submersible can produce thrust in excess of a fixed jet; a conclusion which is corroborated by preliminary experimental results. An extension of the dynamic model which uses a time-varying velocity of the conveyed fluid has been provided, and simulations have been performed which show that the submersible can be maneuvered by properly choosing the functional description of this velocity. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Hellum, Aren; Mukherjee, Ranjan; Benard, Andre] Michigan State Univ, Dept Mech Engn, E Lansing, MI 48824 USA. [Hull, Andrew J.] USN, Undersea Warfare Ctr, Adv Acoust Syst Div, Autonomous & Defens Syst Dept, Newport, RI 02841 USA. RP Mukherjee, R (reprint author), Michigan State Univ, Dept Mech Engn, 2555 Engn Bldg, E Lansing, MI 48824 USA. EM hellumar@egr.msu.edu; mukherji@egr.msu.edu; benard@egr.msu.edu; andrew.hull@navy.mil RI Mukherjee, Ranjan/A-7518-2009 FU Office of Naval Research, ONR [N00014-08-1-0460]; National Science Foundation, NSF [CMMI-1131170] FX The support provided by the Office of Naval Research, ONR Grant no. N00014-08-1-0460, is gratefully acknowledged. The second author would additionally like to acknowledge the support provided by the National Science Foundation, NSF Grant CMMI-1131170. The authors also wish to thank Brian Fickies and other staff members of the Michigan State University intramural swimming pool for permitting us to use their facilities. NR 31 TC 2 Z9 2 U1 1 U2 10 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 JAN PY 2013 VL 36 BP 83 EP 110 DI 10.1016/j.jfluidstructs.2012.08.006 PG 28 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA 076YT UT WOS:000313995800006 ER PT J AU Kaplan, C Dahm, J Oran, E Alexandrov, N Boris, J AF Kaplan, Carolyn Dahm, Johann Oran, Elaine Alexandrov, Natalia Boris, Jay TI Analysis of the Monotonic Lagrangian Grid as an Air Traffic Simulation Tool SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID ALGORITHM; DYNAMICS AB A new research platform, the Air Traffic Monotonic Lagrangian Grid, has been developed to serve as a simulation tool for easy and fast testing of various air traffic system concepts. The underlying algorithm is the Monotonic Lagrangian Grid, which is a fast nearest-neighbors interaction algorithm used for sorting and tracking many moving and interacting objects. The nodes of the Monotonic Lagrangian Grid represent the locations of individual aircraft, and the grid moves at each time step as the aircraft move. The model is used to simulate a 24 h period of air traffic flow in the National Airspace System, during which there are 41,594 flights, and this requires only 79 s of wall-clock time on a single processor of a 1.3 GHz Altix. An analysis is presented of the number of nearest-neighbor nodes that must be checked to ensure adequate separation among aircraft. An investigation of the effect of removing waypoints from aircraft trajectories indicates that this may result in a significant reduction in total flight time. Finally, the model is compared with the traditional Latitude - Longitude grid approach, in which the airspace volume is partitioned into fixed stationary grid cells. Results of the comparison indicate that the main advantage of the Monotonic Lagrangian Grid method is that it is a general sorting algorithm that can sort on multiple properties, providing more computational efficiency. C1 [Kaplan, Carolyn] USN, Res Lab, Labs Computat Phys & Fluid Dynam, Lab Prop Energet & Dynam Syst, Washington, DC 20375 USA. [Dahm, Johann] Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA. [Oran, Elaine; Boris, Jay] USN, Res Lab, LCP & FD, Washington, DC 20375 USA. [Alexandrov, Natalia] NASA, Langley Res Ctr, NextGen Syst Anal Integrat & Evaluat Project, Hampton, VA 23681 USA. RP Kaplan, C (reprint author), USN, Res Lab, Labs Computat Phys & Fluid Dynam, Lab Prop Energet & Dynam Syst, Code 6041, Washington, DC 20375 USA. NR 14 TC 1 Z9 1 U1 0 U2 3 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 2013 VL 36 IS 1 BP 196 EP 206 DI 10.2514/1.56545 PG 11 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA 083AO UT WOS:000314435300016 ER PT J AU Sentchev, A Forget, P Barbin, Y Yaremchuk, M AF Sentchev, Alexei Forget, Philippe Barbin, Yves Yaremchuk, Max TI Surface circulation in the Iroise Sea (W. Brittany) from high resolution HF radar mapping SO JOURNAL OF MARINE SYSTEMS LA English DT Article DE HF radar; Tidal current; Residual flow; Eddy field; Iroise Sea ID ENGLISH-CHANNEL; TIDAL CURRENTS; NORTH-SEA; FRONT; MODEL; DISPERSION; DYNAMICS; OUTFLOW; ISLANDS; TIDES AB The data from two high-frequency radars (HFR) operating in the Iroise Sea are re-processed by applying an improved version of the direction finding algorithm, removing wave-induced surface currents and the variational interpolation on a regular grid. Combining these processing techniques allowed reconstruction of the surface currents at a level of details that was not previously available. Refined resolution enabled to identify fine-scale structures of surface circulation, to quantify the variability of tidal currents and the residual (time averaged) velocity field, and to explain spatial intermittence in polarization of the tidal current ellipses. The analyzed data span two month-long periods in spring and late summer of 2007. The major findings include (a) a dipole structure in the vorticity field characterized by two oppositely rotating eddies, generated on the leeward side of the Ushant Island at flood (negative polarity) and at ebb (positive polarity); (b) an extremely strong fortnightly variability of tidal currents northwest of the Ushant Island with the highest velocity magnitude of 3.9 m/s caused by the interference of the major semi-diurnal tidal constituents; (c) a significant contribution of the higher order nonlinear tidal harmonics to the surface currents in the Fromveur strait, which maintains strong tidal currents and affects the shape of their fortnightly modulation. The residual circulation is characterized by two distinct zones approximately separated by the 100 m isobath: in the offshore zone the residual currents have a significant contribution of the wind-driven component, whereas the nearshore zone is characterized by extremely strong (up to 0.4 m/s) time-independent residual circulation featuring two permanent anticyclonic eddies: north of the western extremity of the Sein archipelago, and north the Ushant Island. The acquired data and the presented results could be useful for regional model validation and studies of the local eddy dynamics, tidal fronts, and passive tracer transport in the region. (C) 2011 Elsevier B.V. All rights reserved. C1 [Sentchev, Alexei] Univ Littoral Cote dOpale, CNRS, UMR8187, Lab Oceanol & Geosci, F-62930 Wimereux, France. [Forget, Philippe; Barbin, Yves] Univ Sud Toulon Var, CNRS, UMR6017, Lab Sondages Electromagnet Environm Terr, F-83130 La Garde, France. [Yaremchuk, Max] USN, Res Lab, Stennis Space Ctr, MS 39529 USA. RP Sentchev, A (reprint author), Univ Littoral Cote dOpale, CNRS, UMR8187, Lab Oceanol & Geosci, F-62930 Wimereux, France. EM alexei.sentchev@univ-littoral.fr; philippe.forget@lseet.univ-tln.fr; yves.barbin@lseet.univ-tln.fr; max.yaremchuk@nrlssc.navy.mil FU ANR (Agence Nationale de la Recherche); INSU (Institut National des Sciences de l'Univers) FX The study was performed in the framework of Epigram (Etudes Physiques Integrees en Gascogne et Region Atlantique-Manche) scientific project (Yves Morel (LEGOS), head of the project) funded by the ANR (Agence Nationale de la Recherche) and INSU (Institut National des Sciences de l'Univers). The HFR data were provided by ACTIMAR with the authorisation of the French Naval Oceanographic Centre (SHOM). Meteorological data have been provided by regional office of Meteo-France. Part of the work was completed when one of the authors (MY) was visiting the Universite du Littoral with support from the French Ministry of Education and Research. We would like also to thank Louis Marie and Fabrice Ardhuin for help with the data. NR 46 TC 7 Z9 7 U1 2 U2 15 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0924-7963 J9 J MARINE SYST JI J. Mar. Syst. PD JAN PY 2013 VL 109 SU S SI SI BP S153 EP S168 DI 10.1016/j.jmarsys.2011.11.024 PG 16 WC Geosciences, Multidisciplinary; Marine & Freshwater Biology; Oceanography SC Geology; Marine & Freshwater Biology; Oceanography GA 082XO UT WOS:000314427500012 ER PT J AU Ruth, RA AF Ruth, Richard A. TI The Universe Unraveling: American Foreign Policy in Cold War Laos SO JOURNAL OF MILITARY HISTORY LA English DT Book Review C1 [Ruth, Richard A.] USN Acad, Annapolis, MD 21402 USA. RP Ruth, RA (reprint author), USN Acad, Annapolis, MD 21402 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU SOC MILITARY HISTORY PI LEXINGTON PA C/O VIRGINIA MILITARY INST, GEORGE C MARSHALL LIBRARY, LEXINGTON, VA 24450-1600 USA SN 0899-3718 J9 J MILITARY HIST JI J. Mil. Hist. PD JAN PY 2013 VL 77 IS 1 BP 393 EP 394 PG 2 WC History SC History GA 069VX UT WOS:000313466300079 ER PT J AU Tsukayama, P Nunez, JH De los Santos, M Soberon, V Lucas, CM Matlashewski, G Llanos-Cuentas, A Ore, M Baldeviano, GC Edgel, KA Lescano, AG Graf, PCF Bacon, DJ AF Tsukayama, Pablo Nunez, Jorge H. De los Santos, Maxy Soberon, Valeria Lucas, Carmen M. Matlashewski, Greg Llanos-Cuentas, Alejandro Ore, Marianela Baldeviano, G. Christian Edgel, Kimberly A. Lescano, Andres G. Graf, Paul C. F. Bacon, David J. TI A FRET-Based Real-Time PCR Assay to Identify the Main Causal Agents of New World Tegumentary Leishmaniasis SO PLOS NEGLECTED TROPICAL DISEASES LA English DT Article ID POLYMERASE-CHAIN-REACTION; CUTANEOUS-LEISHMANIASIS; OLD-WORLD; SPECIES DISCRIMINATION; ANTIMONIAL TREATMENT; KINETOPLAST DNA; PERU; IDENTIFICATION; DIAGNOSIS; PARASITES AB In South America, various species of Leishmania are endemic and cause New World tegumentary leishmaniasis (NWTL). The correct identification of these species is critical for adequate clinical management and surveillance activities. We developed a real-time polymerase chain reaction (PCR) assay and evaluated its diagnostic performance using 64 archived parasite isolates and 192 prospectively identified samples collected from individuals with suspected leishmaniasis enrolled at two reference clinics in Lima, Peru. The real-time PCR assay was able to detect a single parasite and provided unambiguous melting peaks for five Leishmania species of the Viannia subgenus that are highly prevalent in South America: L. (V.) braziliensis, L. (V.) panamensis, L. (V.) guyanensis, L. (V.) peruviana and L. (V.) lainsoni. Using kinetoplastid DNA-based PCR as a gold standard, the real-time PCR had sensitivity and specificity values of 92% and 77%, respectively, which were significantly higher than those of conventional tests such as microscopy, culture and the leishmanin skin test (LST). In addition, the real-time PCR identified 147 different clinical samples at the species level, providing an overall agreement of 100% when compared to multilocus sequence typing (MLST) data performed on a subset of these samples. Furthermore, the real-time PCR was three times faster and five times less expensive when compared to PCR - MLST for species identification from clinical specimens. In summary, this new assay represents a cost-effective and reliable alternative for the identification of the main species causing NWTL in South America. C1 [Tsukayama, Pablo; Nunez, Jorge H.; De los Santos, Maxy; Soberon, Valeria; Lucas, Carmen M.; Baldeviano, G. Christian; Edgel, Kimberly A.; Lescano, Andres G.; Graf, Paul C. F.; Bacon, David J.] US Naval Med Res Unit 6 NAMRU 6, Dept Parasitol, Lima, Peru. [Matlashewski, Greg] McGill Univ, Dept Microbiol & Immunol, Quebec City, PQ, Canada. [Llanos-Cuentas, Alejandro] Univ Peruana Cayetano Heredia, Inst Med Trop Alexander von Humboldt, Leishmaniasis Working Grp, Lima, Peru. [Ore, Marianela] Cent Mil Hosp, Lima, Peru. [Graf, Paul C. F.] USN, San Diego Med Ctr, Microbiol Immunol & Mol Diagnost Lab Dept, San Diego, CA 92152 USA. [Bacon, David J.] USN, Res Lab, Washington, DC 20375 USA. RP Tsukayama, P (reprint author), US Naval Med Res Unit 6 NAMRU 6, Dept Parasitol, Lima, Peru. EM willy.lescano@med.navy.mil RI Valle, Ruben/A-7512-2013; Lescano, Andres/B-8479-2008; OI Lescano, Andres/0000-0001-9779-633X; Graf, Paul/0000-0002-1094-7498 FU Global Emerging Infections Surveillance and Response System (AFHSC/GEIS) of the U.S. Department of Defense [CO497_11_L1, CO466_11_L1]; NIH/FIC [2D43 TW007393, 6 (NAMRU-6)] FX This study was funded by grants CO497_11_L1 and CO466_11_L1 of the Global Emerging Infections Surveillance and Response System (AFHSC/GEIS) of the U.S. Department of Defense. Additionally, this work was supported by the training grant 2D43 TW007393 awarded to the U.S. Naval Medical Research Unit No. 6 (NAMRU-6) by NIH/FIC. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 36 TC 11 Z9 11 U1 0 U2 5 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1935-2735 J9 PLOS NEGLECT TROP D JI Plos Neglect. Trop. Dis. PD JAN PY 2013 VL 7 IS 1 AR e1956 DI 10.1371/journal.pntd.0001956 PG 9 WC Infectious Diseases; Parasitology; Tropical Medicine SC Infectious Diseases; Parasitology; Tropical Medicine GA 081ZB UT WOS:000314360200006 PM 23301111 ER PT J AU Huang, L Shabaev, A Lambrakos, SG Massa, L AF Huang, L. Shabaev, A. Lambrakos, S. G. Massa, L. TI Ground-state spectral features of molecular clusters RDX excited at THz frequencies SO VIBRATIONAL SPECTROSCOPY LA English DT Article DE THz spectra; Vibrational resonances; OFT calculations ID GAUSSIAN-BASIS SETS; TERAHERTZ SPECTROSCOPY; EXPLOSIVES; 1,3,5-TRINITRO-S-TRIAZINE AB Calculations are presented of ground state resonance structure at THz frequencies for molecular clusters of the high explosive RDX using density functional theory (DFT). The spectral features of this resonance structure are due to coupling of resonance modes for ground state excitation. In particular, the coupling among ground state resonance modes provides a reasonable molecular level interpretation of spectral features associated with THz excitation of molecular clusters. THz excitation is associated with frequencies that are characteristically perturbative to molecular electronic states, in contrast to frequencies that can induce appreciable electronic state transition. Owing to this characteristic of THz excitation, one is able to make a direct association between local oscillations about ground-state minima of molecules, either isolated or comprising a cluster, and THz excitation spectra. The DFT software GAUSSIAN was used for the calculations of ground state resonance structure presented here. (C) 2012 Elsevier B.V. All rights reserved. C1 [Huang, L.; Lambrakos, S. G.] USN, Res Lab, Washington, DC 20375 USA. [Shabaev, A.] George Mason Univ, Fairfax, VA 22030 USA. [Massa, L.] CUNY Hunter Coll, New York, NY 10021 USA. RP Shabaev, A (reprint author), George Mason Univ, Fairfax, VA 22030 USA. FU Office of Naval Research FX This work was supported by the Office of Naval Research. NR 34 TC 4 Z9 5 U1 2 U2 25 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0924-2031 EI 1873-3697 J9 VIB SPECTROSC JI Vib. Spectrosc. PD JAN PY 2013 VL 64 BP 62 EP 67 DI 10.1016/j.vibspec.2012.10.003 PG 6 WC Chemistry, Analytical; Chemistry, Physical; Spectroscopy SC Chemistry; Spectroscopy GA 074XO UT WOS:000313848600010 ER PT J AU Epstein, JE AF Epstein, Judith E. TI Taking a Bite out of Malaria: Controlled Human Malaria Infection by Needle and Syringe SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Editorial Material ID PLASMODIUM-FALCIPARUM; SPOROZOITE INOCULATION; HUMAN VOLUNTEERS; CHALLENGE; PROTECTION; IMMUNIZATION; ATOVAQUONE; MOSQUITOS; EFFICACY; IMMUNITY C1 USN, Med Res Ctr, US Mil Malaria Vaccine Program, Silver Spring, MD 20910 USA. RP Epstein, JE (reprint author), USN, Med Res Ctr, US Mil Malaria Vaccine Program, 503 Robert Grant Ave, Silver Spring, MD 20910 USA. EM Judith.Epstein@med.navy.mil NR 21 TC 11 Z9 11 U1 0 U2 4 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DR, STE 130, MCLEAN, VA 22101 USA SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD JAN PY 2013 VL 88 IS 1 BP 3 EP 4 DI 10.4269/ajtmh.2013.12-0715 PG 2 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA 073QL UT WOS:000313757500002 PM 23303797 ER PT J AU Contursi, A Poglitsch, A Carpio, JG Veilleux, S Sturm, E Fischer, J Verma, A Hailey-Dunsheath, S Lutz, D Davies, R Gonzalez-Alfonso, E Sternberg, A Genzel, R Tacconi, L AF Contursi, A. Poglitsch, A. Carpio, J. Gracia Veilleux, S. Sturm, E. Fischer, J. Verma, A. Hailey-Dunsheath, S. Lutz, D. Davies, R. Gonzalez-Alfonso, E. Sternberg, A. Genzel, R. Tacconi, L. TI Spectroscopic FIR mapping of the disk and galactic wind of M 82 with Herschel-PACS SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE galaxies: individual: M 82; infrared: ISM; galaxies: kinematics and dynamics; galaxies: starburst ID STARBURST GALAXY M82; ULTRALUMINOUS INFRARED GALAXIES; SPECTRAL ENERGY-DISTRIBUTION; LYMAN BREAK GALAXIES; MICRON LINE DEFICIT; BLACK-HOLE MASS; PHOTODISSOCIATION REGIONS; STAR-FORMATION; ULTRAVIOLET-SPECTRA; LUMINOUS STARBURSTS AB Context. We present maps of the main cooling lines of the neutral atomic gas ([OI] at 63 and 145 mu m and [CII] at 158 mu m) and in the [OIII] 88 mu m line of the starburst galaxy M 82, carried out with the PACS spectrometer on board the Herschel satellite. Aims. Our aim is to study the nature of the neutral atomic gas of M 82 and to compare this gas with the molecular and ionized gas in the M 82 disk and outflow. Methods. By applying PDR modeling we were able to derive maps of the main ISM physical parameters, including the optical depth (tau([CII])), at unprecedented spatial resolution (similar to 300 pc). Results. We can clearly kinematically separate the disk from the outflow in all lines. The tau([CII]) is less than 1 everywhere, is lower in the outflow than in the disk, and within the disk is lower in the starburst region. The [CII] and [OI] distributions are consistent with PDR emission both in the disk and in the outflow. Surprisingly, in the outflow, the atomic and the ionized gas traced by the [OIII] line both have a deprojected velocity of similar to 75 km s(-1), very similar to the average velocity of the outflowing cold molecular gas (similar to 100 km s(-1)) and several times smaller than the outflowing material detected in H alpha (similar to 600 km s(-1)). This suggests that the cold molecular and neutral atomic gas and the ionized gas traced by the [OIII] 88 mu m line are dynamically coupled to each other but decoupled from the H alpha emitting gas. Conclusions. We propose a scenario where cold clouds from the disk are entrained into the outflow by the winds where they likely evaporate, surviving as small, fairly dense cloudlets (n(H) similar to 500-1000 cm(-3), G(0) similar to 500-1000, T-gas similar to 300 K). We show that the UV photons provided by the starburst are sufficient to excite the PDR shells around the molecular cores and probably also the ionized gas that flows at the same PDR velocity. The mass of the neutral atomic component in the outflow is >= 2-8 x 10(7) M-circle dot to be compared with that of the molecular component (3.3 x 10(8) M-circle dot) and of the H alpha emitting gas (5.8 x 10(6) M-circle dot). The mass loading factor, (M) over dot(Outflow)/SFR, of the molecular plus neutral atomic gas in the outflow is similar to 2. Energy and momentum driven outflow models can explain the data equally well, if all the outflowing gas components are taken into account. C1 [Contursi, A.; Poglitsch, A.; Carpio, J. Gracia; Sturm, E.; Hailey-Dunsheath, S.; Lutz, D.; Davies, R.; Genzel, R.; Tacconi, L.] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany. [Veilleux, S.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA. [Fischer, J.] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA. [Verma, A.] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England. [Gonzalez-Alfonso, E.] Univ Alcala de Henares, Dept Fis, Madrid 28871, Spain. [Sternberg, A.] Tel Aviv Univ, Sackler Sch Phys & Astron, IL-69978 Ramat Aviv, Israel. RP Contursi, A (reprint author), Max Planck Inst Extraterr Phys, Postfach 1312, D-85741 Garching, Germany. EM contursi@mpe.mpg.de FU BMVIT (Austria); ESA-PRODEX (Belgium); CEA/CNES (France); DLR (Germany); ASI/INAF (Italy); CICYT/MCYT(Spain); US ONR; NHSC; Spanish Ministerio de Ciencia e Innovacion [AYA2010-21697-C05-01]; Research Associate at the Harvard-Smithsonian Center for Astrophysics FX PACS has been developed by a consortium of institutes led by MPE (Germany) and including UVIE (Austria); KU Leuven, CSL, IMEC (Belgium); CEA, LAM (France); MPIA (Germany); INAF-IFSI/OAA/OAP/OAT, LENS, SISSA (Italy); IAC (Spain). This development has been supported by the funding agencies BMVIT (Austria), ESA-PRODEX (Belgium), CEA/CNES (France), DLR (Germany), ASI/INAF (Italy), and CICYT/MCYT(Spain). Basic research in IR astronomy at NRL is funded by the US ONR: J.F. also acknowledges support from the NHSC. E.G.-A. thanks the support by the Spanish Ministerio de Ciencia e Innovacion under project AYA2010-21697-C05-01, and is a Research Associate at the Harvard-Smithsonian Center for Astrophysics. NR 93 TC 15 Z9 15 U1 0 U2 1 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 EI 1432-0746 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JAN PY 2013 VL 549 AR A118 DI 10.1051/0004-6361/201219214 PG 26 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 073LR UT WOS:000313745000118 ER PT J AU Henkel, C Wilson, TL Asiri, H Mauersberger, R AF Henkel, C. Wilson, T. L. Asiri, H. Mauersberger, R. TI Ammonia in the hot core W 51-IRS2: 11 new maser lines and a maser component with a velocity drift SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE masers; ISM: clouds; ISM: individual objects: W51; HII regions; ISM: molecules; radio lines: ISM ID STAR-FORMING REGIONS; VIBRATIONALLY EXCITED AMMONIA; HIGH-RESOLUTION OBSERVATIONS; ORION-KL; NONMETASTABLE AMMONIA; INTERSTELLAR AMMONIA; MASSIVE STAR; EMISSION; MULTILEVEL; W51 AB With the 100-m telescope at Effelsberg, 19 ammonia (NH3) maser lines have been detected toward the prominent massive star forming region W51-IRS2. Eleven of these inversion lines, the (J, K) = (6, 2), (5, 3), (7, 4), (8, 5), (7, 6), (7, 7), (9, 7), (10, 7), (9, 9), (10, 9), and (12, 12) transitions, are classified as masers for the first time in outer space. All detected masers are related to highly excited inversion doublets. The (5, 4) maser originates from an inversion doublet similar to 340 K above the ground state, while the (12, 12) transition, at similar to 1450K, is the most highly excited NH3 maser line so far known. Strong variability is seen not only in ortho- but also in para-NH3 transitions. Bright narrow emission features are observed, for the first time, in (mostly) ortho- ammonia transitions, at V-LSR similar to 45 km s(-1), well separated from the quasi-thermal emission near 60 km s(-1). These features were absent similar to 25 years ago and show a velocity drift of about +0.2 km s(-1) yr(-1). The component is likely related to the SiO maser source in W51-IRS2 and a possible scenario explaining the velocity drift is outlined. The 57 km s(-1) component of the (9, 6) maser line is found to be strongly linearly polarised. Maser emission in the (J, K) to (J + 1, K) inversion doublets is strictly forbidden by selection rules for electric dipole transitions in the ground vibrational state. However, such pairs (and even triplets with (J + 2, K)) are common toward W51-IRS2. Similarities in line widths and velocities indicate that such groups of maser lines arise from the same regions, which can be explained by pumping through vibrational excitation. The large number of NH3 maser lines in W51-IRS2 is most likely related to the exceptionally high kinetic temperature and NH3 column density of this young massive star forming region. C1 [Henkel, C.] Max Planck Inst Radioastron, D-53121 Bonn, Germany. [Henkel, C.; Asiri, H.] King Abdulaziz Univ, Fac Sci, Dept Astron, Jeddah, Saudi Arabia. [Wilson, T. L.] USN, Res Lab, Washington, DC 20375 USA. [Mauersberger, R.] Joint ALMA Observ, Vitacura, Santiago De Chi, Chile. RP Henkel, C (reprint author), Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany. EM chenkel@mpifr-bonn.mpg.de RI Faculty of, Sciences, KAU/E-7305-2017 NR 55 TC 5 Z9 5 U1 0 U2 7 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JAN PY 2013 VL 549 AR A90 DI 10.1051/0004-6361/201220098 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 073LR UT WOS:000313745000090 ER PT J AU Gay, DAT Ritchie, JV Perry, JN Horne, S AF Gay, D. A. T. Ritchie, J. V. Perry, J. N. Horne, S. TI Ultrasound of penetrating ocular injury in a combat environment SO CLINICAL RADIOLOGY LA English DT Review AB Penetrating eye injuries are uncommon in a civilian environment, but unfortunately, very common in a military emergency department. Ultrasound of the eye is quick, reliable, accurate, and easy to learn. This review aims to demonstrate normal anatomy and penetrating injuries of the anterior and posterior compartments of the eye. (C) 2012 The Royal College of Radiologists. Published by Elsevier Ltd. All rights reserved. C1 [Gay, D. A. T.; Horne, S.] Derriford Hosp, Plymouth PL6 8DH, Devon, England. [Perry, J. N.] Peterborough City Hosp, Peterborough, Cambs, England. [Ritchie, J. V.] Naval Med Ctr Portsmouth, Portsmouth, VA USA. RP Gay, DAT (reprint author), Derriford Hosp, Derriford Rd, Plymouth PL6 8DH, Devon, England. EM davegay@nhs.net NR 5 TC 2 Z9 2 U1 0 U2 4 PU W B SAUNDERS CO LTD PI LONDON PA 32 JAMESTOWN RD, LONDON NW1 7BY, ENGLAND SN 0009-9260 J9 CLIN RADIOL JI Clin. Radiol. PD JAN PY 2013 VL 68 IS 1 BP 82 EP 84 DI 10.1016/j.crad.2012.05.015 PG 3 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA 077FO UT WOS:000314013500012 PM 22832145 ER PT J AU Ferraro, RR Peters-Lidard, CD Hernandez, C Turk, FJ Aires, F Prigent, C Lin, X Boukabara, SA Furuzawa, FA Gopalan, K Harrison, KW Karbou, F Li, L Liu, CT Masunaga, H Moy, L Ringerud, S Skofronick-Jackson, GM Tian, YD Wang, NY AF Ferraro, Ralph R. Peters-Lidard, Christa D. Hernandez, Cecilia Turk, F. Joseph Aires, Filipe Prigent, Catherine Lin, Xin Boukabara, Sid-Ahmed Furuzawa, Fumie A. Gopalan, Kaushik Harrison, Kenneth W. Karbou, Fatima Li, Li Liu, Chuntao Masunaga, Hirohiko Moy, Leslie Ringerud, Sarah Skofronick-Jackson, Gail M. Tian, Yudong Wang, Nai-Yu TI An Evaluation of Microwave Land Surface Emissivities Over the Continental United States to Benefit GPM-Era Precipitation Algorithms SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article DE Emissivity; land surface; passive microwave remote sensing; precipitation ID NUMERICAL WEATHER PREDICTION; GLOBAL 4DVAR ASSIMILATION; SATELLITE-OBSERVATIONS; AMSU OBSERVATIONS; SOIL-MOISTURE; WATER-VAPOR; RETRIEVAL; MODELS; GHZ; WORKSHOP AB Passive microwave (PMW) satellite-based precipitation over land algorithms rely on physical models to define the most appropriate channel combinations to use in the retrieval, yet typically require considerable empirical adaptation of the model for use with the satellite measurements. Although low-frequency channels are better suited to measure the emission due to liquid associated with rain, most techniques to date rely on high-frequency, scattering-based schemes since the low-frequency methods are limited to the highly variable land surface background, whose radiometric contribution is substantial and can vary more than the contribution of the rain signal. Thus, emission techniques are generally useless over the majority of the Earth's surface. As a first step toward advancing to globally useful physical retrieval schemes, an intercomparison project was organized to determine the accuracy and variability of several emissivity retrieval schemes. A three-year period (July 2004-June 2007) over different targets with varying surface characteristics was developed. The PMW radiometer data used includes the Special Sensor Microwave Imagers, SSMI Sounder, Advanced Microwave Scanning Radiometer (AMSR-E), Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI), Advanced Microwave Sounding Units, and Microwave Humidity Sounder, along with land surface model emissivity estimates. Results from three specific targets in North America were examined. While there are notable discrepancies among the estimates, similar seasonal trends and associated variability were noted. Because of differences in the treatment surface temperature in the various techniques, it was found that comparing the product of temperature and emissivity yielded more insight than when comparing the emissivity alone. This product is the major contribution to the overall signal measured by PMW sensors and, if it can be properly retrieved, will improve the utility of emission techniques for over land precipitation retrievals. As a more rigorous means of comparison, these emissivity time series were analyzed jointly with precipitation data sets, to examine the emissivity response immediately following rain events. The results demonstrate that while the emissivity structure can be fairly well characterized for certain surface types, there are other more complex surfaces where the underlying variability is more than can be captured with the PMW channels. The implications for Global Precipitation Measurement-era algorithms suggest that physical retrievals are feasible over vegetated land during the warm seasons. C1 [Ferraro, Ralph R.] NOAA, NESDIS, College Pk, MD 20740 USA. [Peters-Lidard, Christa D.; Lin, Xin; Skofronick-Jackson, Gail M.; Tian, Yudong] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Turk, F. Joseph] CALTECH, Jet Prop Lab, Radar Sci Grp, Pasadena, CA 91109 USA. [Aires, Filipe] Estellus, Paris, France. [Prigent, Catherine] CNRS, Observ Paris, Lab Etud Rayonnement & Matiere Astrophys, Paris, France. [Lin, Xin; Wang, Nai-Yu] Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20740 USA. [Boukabara, Sid-Ahmed; Moy, Leslie] NOAA, NESDIS, Camp Springs, MD 20746 USA. [Furuzawa, Fumie A.; Masunaga, Hirohiko] Nagoya Univ, Hydrospher Atmospher Res Ctr, Nagoya, Aichi 4648601, Japan. [Gopalan, Kaushik] ISRO, Ctr Space Applicat, Ahmadabad 380053, Gujarat, India. [Harrison, Kenneth W.] N Carolina State Univ, Raleigh, NC 27695 USA. [Karbou, Fatima] Meteo France, Natl Ctr Meteorol Res, GAME, Minist Ecol Dev Durable Transports & Logement, Toulouse, France. [Li, Li] USN, Res Lab, Washington, DC 20375 USA. [Liu, Chuntao] Univ Utah, Dept Atmospher Sci, Salt Lake City, UT 84112 USA. [Ringerud, Sarah] Colorado State Univ, Boulder, CO 80309 USA. RP Ferraro, RR (reprint author), NOAA, NESDIS, College Pk, MD 20740 USA. EM Ralph.R.Ferraro@noaa.gov RI PMM, JAXA/K-8537-2016; Masunaga, Hirohiko/C-2488-2008; Skofronick-Jackson, Gail/D-5354-2012; Boukabara, Sid Ahmed/F-5577-2010; Measurement, Global/C-4698-2015; Ferraro, Ralph/F-5587-2010; Wang, Nai-Yu/E-5303-2016; Peters-Lidard, Christa/E-1429-2012 OI Masunaga, Hirohiko/0000-0002-6336-5002; Gopalan, Kaushik/0000-0002-7980-6183; Boukabara, Sid Ahmed/0000-0002-1857-3806; Ferraro, Ralph/0000-0002-8393-7135; Peters-Lidard, Christa/0000-0003-1255-2876 FU National Aeronautics and Space Administration; National Oceanic and Atmospheric Administration (NOAA); NASA's Precipitation Measuring Missions (PMM) program; NESDIS FX This work was supported in part by the National Aeronautics and Space Administration and the National Oceanic and Atmospheric Administration (NOAA) (R. Kakar, A. Hou, J. Pereira, A. Powell). The contents of this paper are solely the opinions of the author(s) and do not constitute a statement of policy, decision, or position on behalf of NOAA or the U.S. Government.; The authors acknowledge support through NASA's Precipitation Measuring Missions (PMM) program, in particular, R. Kakar, PMM Program Scientist and A. Hou, PMM Project Scientist. Ferraro, Hernandez, and Wang would also like to acknowledge support from NESDIS (J. Pereira and A. Powell). Peters-Lidard, Harrison and Tian gratefully acknowledge support from NASA and the Air Force Weather Agency supporting LIS/CRTM coupling for the JCSDA. TRMM data were made available through the NASA/GSFC Precipitation Processing System (PPS). F. J. Turk's work was performed at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. NR 45 TC 36 Z9 38 U1 2 U2 40 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0196-2892 J9 IEEE T GEOSCI REMOTE JI IEEE Trans. Geosci. Remote Sensing PD JAN PY 2013 VL 51 IS 1 BP 378 EP 398 DI 10.1109/TGRS.2012.2199121 PN 2 PG 21 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA 077IO UT WOS:000314021300003 ER PT J AU Costa, R Kay, S AF Costa, Russell Kay, Steven TI A Geometrical Interpretation of Exponentially Embedded Families of Gaussian Probability Density Functions for Model Selection SO IEEE TRANSACTIONS ON SIGNAL PROCESSING LA English DT Article DE Exponentially embedded families; hypothesis testing; modeling; signal detection ID TRIANGULATION AB Model selection via exponentially embedded families (EEF) of probability models has been shown to perform well on many practical problems of interest. A key component in utilizing this approach is the definition of a model origin (i.e. null hypothesis) which is embedded individually within each competing model. In this correspondence we give a geometrical interpretation of the EEF and study the sensitivity of the EEF approach to the choice of model origin in a Gaussian hypothesis testing framework. We introduce the information center (I-center) of competing models as an origin in this procedure and compare this to using the standard null hypothesis. Finally we derive optimality conditions for which the EEF using I-center achieves optimal performance in the Gaussian hypothesis testing framework. C1 [Costa, Russell] USN, Undersea Warfare Ctr, Newport, RI 02841 USA. [Kay, Steven] Univ Rhode Isl, Dept Elect Comp & Biomed Engn, Kingston, RI 02881 USA. RP Costa, R (reprint author), USN, Undersea Warfare Ctr, Newport, RI 02841 USA. EM russell.costa@navy.mil; kay@ele.uri.edu FU In-house Laboratory Independent Research Program of the Naval Undersea Warfare Center FX Manuscript received February 27, 2012; revised July 11, 2012; accepted September 05, 2012. Date of publication October 04, 2012; date of current version December 06, 2012. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Z. Jane Wang. This work was supported by the In-house Laboratory Independent Research Program of the Naval Undersea Warfare Center. NR 12 TC 0 Z9 0 U1 0 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1053-587X J9 IEEE T SIGNAL PROCES JI IEEE Trans. Signal Process. PD JAN PY 2013 VL 61 IS 1 BP 62 EP 67 DI 10.1109/TSP.2012.2222393 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA 075OJ UT WOS:000313896100008 ER PT J AU Chen, JH Lin, SJ AF Chen, Jan-Huey Lin, Shian-Jiann TI Seasonal Predictions of Tropical Cyclones Using a 25-km-Resolution General Circulation Model SO JOURNAL OF CLIMATE LA English DT Article ID WESTERN NORTH PACIFIC; REGIONAL ATMOSPHERIC MODEL; EAST-INDIAN OCEAN; INTERANNUAL VARIABILITY; ATLANTIC HURRICANES; FREQUENCY; SIMULATIONS; IMPACT; PARAMETERIZATION; CLIMATOLOGY AB Retrospective seasonal predictions of tropical cyclones (TCs) in the three major ocean basins of the Northern Hemisphere are performed from 1990 to 2010 using the Geophysical Fluid Dynamics Laboratory High-Resolution Atmospheric Model (HiRAM) at 25-km resolution. Atmospheric states are initialized for each forecast, with the sea surface temperature anomaly (SSTA) "persisted" from that at the starting time during the 5-month forecast period (July-November). Using a five-member ensemble, it is shown that the storm counts of both tropical storm (TS) and hurricane categories are highly predictable in the North Atlantic basin during the 21-yr period. The correlations between the 21-yr observed and model predicted storm counts are 0.88 and 0.89 for hurricanes and TSs, respectively. The prediction in the eastern North Pacific is skillful, but it is not as outstanding as that in the North Atlantic. The persistent SSTA assumption appears to be less robust for the western North Pacific, contributing to less skillful predictions in that region. The relative skill in the prediction of storm counts is shown to be consistent with the quality of the predicted large-scale environment in the three major basins. It is shown that intensity distribution of TCs can be captured well by the model if the central sea level pressure is used as the threshold variable instead of the commonly used 10-m wind speed. This demonstrates the feasibility of using the 25-km-resolution HiRAM, a general circulation model designed initially for long-term climate simulations, to study the impacts of climate change on the intensity distribution of TCs. C1 [Chen, Jan-Huey] Princeton Univ, Program Atmospher & Ocean Sci, Princeton, NJ 08544 USA. [Chen, Jan-Huey; Lin, Shian-Jiann] Natl Ocean & Atmospher Adm, Geophys Fluid Dynam Lab, Princeton, NJ USA. RP Chen, JH (reprint author), USN, Res Lab, 7 Grace Hopper Ave, Monterey, CA 93943 USA. EM jan-huey.chen.ctr.tw@nrlmry.navy.mil FU NOAA's Hurricane Forecast Improvement Project FX We thank Tim Marchok for his assistance on the use of the tracker program he developed, and Zhitao Yu for his assistance to process the storm filter program. We also thank Yuqing Wang for the discussion about the seasonal TC activities over the western Pacific Ocean. Funding from NOAA's Hurricane Forecast Improvement Project made this project possible. NR 51 TC 26 Z9 27 U1 0 U2 7 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0894-8755 EI 1520-0442 J9 J CLIMATE JI J. Clim. PD JAN PY 2013 VL 26 IS 2 BP 380 EP 398 DI 10.1175/JCLI-D-12-00061.1 PG 19 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 073JX UT WOS:000313740400002 ER PT J AU Fonda, R Reynolds, A Feng, CR Knipling, K Rowenhorst, D AF Fonda, Richard Reynolds, Anthony Feng, C. R. Knipling, Keith Rowenhorst, David TI Material Flow in Friction Stir Welds SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID GRAIN-STRUCTURE; ALUMINUM-ALLOYS; TEXTURE; MICROSTRUCTURE; VISUALIZATION; FCC; DEFORMATION; STRESS; SHEAR AB Friction stir welding generates periodic features within the weld. These "onion ring" features are associated with variations in both texture and the orientation of that texture along the length of the weld. Analysis of an AA2195 friction stir weld reveals the presence of periodic oscillations between the dominant B and B components of the ideal shear texture, suggesting a periodic reversal in the predominant shear orientation during welding that is inconsistent with current understandings of the friction stir welding process. Microstructural features present in the weld and machine force variations during welding indicate that these textures may arise from the oscillation of an off-centered tool. Such a tool oscillation can generate a periodic extrusion of material around the tool, giving rise to the observed flow features, machine force variations, and reversals of the local shear texture orientations. A new model of material flow during friction stir welding is proposed to explain the observed features. DOI: 10.1007/s11661-012-1460-6 (C) The Minerals, Metals & Materials Society and ASM International 2012 C1 [Fonda, Richard; Feng, C. R.; Knipling, Keith; Rowenhorst, David] USN, Res Lab, Washington, DC 20375 USA. [Reynolds, Anthony] Univ S Carolina, Columbia, SC 29208 USA. RP Fonda, R (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM Richard.Fonda@nrl.navy.mil RI Reynolds, Anthony/F-2585-2010 FU Naval Research Laboratory under the Office of Naval Research; Structural Metallics program of ONR; NASA-Langley Research Center; Center for Friction Stir Processing (an NSF I/UCRC) FX RWF, CRF, KEK, and DJR would like to acknowledge funding for this research from the Naval Research Laboratory under the auspices of the Office of Naval Research and from the Structural Metallics program of ONR. APR was partially supported by the NASA-Langley Research Center and the Center for Friction Stir Processing (an NSF I/UCRC). The authors would also like to acknowledge the valuable assistance of Leroy Levenberry, Helen Fonda, and Dr. Marie Cox. NR 37 TC 14 Z9 14 U1 2 U2 52 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD JAN PY 2013 VL 44A IS 1 BP 337 EP 344 DI 10.1007/s11661-012-1460-6 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 073BO UT WOS:000313718500034 ER PT J AU Crum-Cianflone, NF Moore, DJ Letendre, S Roediger, MP Eberly, L Weintrob, A Ganesan, A Johnson, E Del Rosario, R Agan, BK Hale, BR AF Crum-Cianflone, Nancy F. Moore, David J. Letendre, Scott Roediger, Mollie Poehlman Eberly, Lynn Weintrob, Amy Ganesan, Anuradha Johnson, Erica Del Rosario, Raechel Agan, Brian K. Hale, Braden R. TI Low prevalence of neurocognitive impairment in early diagnosed and managed HIV-infected persons SO NEUROLOGY LA English DT Article ID ACTIVE ANTIRETROVIRAL THERAPY; HUMAN-IMMUNODEFICIENCY-VIRUS; NEUROPSYCHOLOGICAL IMPAIRMENT; RISK-FACTORS; ERA; SEROCONVERSION; DISORDERS; ADHERENCE; DEMENTIA; PATTERNS AB Objective: To describe the prevalence of neurocognitive impairment (NCI) among early diagnosed and managed HIV-infected persons (HIV+) compared to HIV-negative controls. Methods: We performed a cross-sectional study among 200 HIV+ and 50 matched HIV-uninfected (HIV-) military beneficiaries. HIV+ patients were categorized as earlier (<6 years of HIV, no AIDS-defining conditions, and CD4 nadir >200 cells/mm(3)) or later stage patients (n = 100 in each group); both groups were diagnosed early and had access to care. NCI was diagnosed using a comprehensive battery of standardized neuropsychological tests. Results: HIV+ patients had a median age of 36 years, 91% were seroconverters (median window of 1.2 years), had a median duration of HIV of 5 years, had a CD4 nadir of 319, had current CD4 of 546 cells/mm(3), and 64% were on highly active antiretroviral therapy (initiated 1.3 years after diagnosis at a median CD4 of 333 cells/mm(3)). NCI was diagnosed among 38 (19%, 95% confidence interval 14%-25%) HIV+ patients, with a similar prevalence of NCI among earlier and later stage patients (18% vs 20%, p = 0.72). The prevalence of NCI among HIV+ patients was similar to HIV- patients. Conclusions: HIV+ patients diagnosed and managed early during the course of HIV infection had a low prevalence of NCI, comparable to matched HIV-uninfected persons. Early recognition and management of HIV infection may be important in limiting neurocognitive impairment. Neurology (R) 2013;80:371-379 C1 [Crum-Cianflone, Nancy F.; Roediger, Mollie Poehlman; Eberly, Lynn; Weintrob, Amy; Ganesan, Anuradha; Johnson, Erica; Del Rosario, Raechel; Agan, Brian K.; Hale, Braden R.] Uniformed Serv Univ Hlth Sci, Infect Dis Clin Res Program, Bethesda, MD 20814 USA. [Crum-Cianflone, Nancy F.; Del Rosario, Raechel; Hale, Braden R.] USN, San Diego Med Ctr, HIV Clin, San Diego, CA 92152 USA. [Crum-Cianflone, Nancy F.; Hale, Braden R.] USN, Hlth Res Ctr, San Diego, CA 92152 USA. [Moore, David J.; Letendre, Scott] Univ Calif San Diego, Hlth Neurobehav Res Program, San Diego, CA 92103 USA. [Roediger, Mollie Poehlman; Eberly, Lynn] Univ Minnesota, Div Biostat, Minneapolis, MN USA. [Weintrob, Amy] Walter Reed Army Med Ctr, Infect Dis Clin, Washington, DC 20307 USA. [Ganesan, Anuradha] Natl Naval Med Ctr, Infect Dis Clin, Bethesda, MD USA. [Johnson, Erica] San Antonio Mil Med Ctr, Infect Dis Serv, San Antonio, TX USA. RP Crum-Cianflone, NF (reprint author), Uniformed Serv Univ Hlth Sci, Infect Dis Clin Res Program, Bethesda, MD 20814 USA. EM nancy.crum@med.navy.mil OI Agan, Brian/0000-0002-5114-1669; Eberly, Lynn/0000-0003-4763-330X FU Infectious Disease Clinical Research Program (IDCRP), a Department of Defense (DoD) program [IDCRP-016]; National Institute of Allergy and Infectious Diseases, NIH [Y1-AI-5072]; Neurobehavioral Health Research Center from the National Institute of Mental Health (UCSD HIV Neurobehavioral Research Center) [P30 MH62512] FX Support for this work (IDCRP-016) was provided by the Infectious Disease Clinical Research Program (IDCRP), a Department of Defense (DoD) program executed through the Uniformed Services University of the Health Sciences. This project has been funded in whole, or in part, with federal funds from the National Institute of Allergy and Infectious Diseases, NIH, under Inter-Agency Agreement Y1-AI-5072. Support was also obtained by the Neurobehavioral Health Research Center from the National Institute of Mental Health (UCSD HIV Neurobehavioral Research Center, P30 MH62512). The content of this publication is the sole responsibility of the authors and does not necessarily reflect the views or policies of the NIH or the Department of Health and Human Services, the DoD, or the Departments of the Army, Navy, or Air Force. Mention of trade names, commercial products, or organizations does not imply endorsement by the US Government. Go to Neurology.org for full disclosures. NR 32 TC 23 Z9 24 U1 1 U2 3 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0028-3878 J9 NEUROLOGY JI Neurology PD JAN PY 2013 VL 80 IS 4 BP 371 EP 379 DI 10.1212/WNL.0b013e31827f0776 PG 9 WC Clinical Neurology SC Neurosciences & Neurology GA 076MQ UT WOS:000313961000015 PM 23303852 ER PT J AU Bennett, BR Chick, TF Ancona, MG Boos, JB AF Bennett, Brian R. Chick, Theresa F. Ancona, Mario G. Boos, J. Brad TI Enhanced hole mobility and density in GaSb quantum wells SO SOLID-STATE ELECTRONICS LA English DT Article DE Molecular beam epitaxy; Quantum wells; Semiconducting III-V materials; Field-effect transistors; GaSb ID FIELD-EFFECT TRANSISTORS; MOLECULAR-BEAM EPITAXY; LOW-POWER APPLICATIONS; COMPOUND SEMICONDUCTORS; HIGH-PERFORMANCE; N-CHANNEL; ELECTRON; RELAXATION; TRANSPORT; CIRCUITS AB Modulation-doped quantum wells (QWs) of GaSb clad by AlAsSb were grown by molecular beam epitaxy on InP substrates. By virtue of quantum confinement and compressive strain of the GaSb, the heavy- and light-hole valence bands in the well are split and the hole mobility is thereby significantly enhanced. Room-temperature Hall mobilities as high as 1200-1500 cm(2)/V s were achieved for 5-10 nm QWs and biaxial strains of 1-3%. This contrasts with earlier work on GaSb/AlGaAsSb QWs on GaAs substrates in which the mobilities were found to fall off above 1% strain. Moreover, unlike in comparable InGaSb and InSb QWs, the high mobilities were maintained out to sheet densities of 3.5 x 10(12)/cm(2). As a result, the sheet resistivities observed in the GaSb/AlAsSb wells reached record levels as low as 1500 Omega/square. Modeling indicates that this performance gain is due to the larger valence band offset of the GaSb QWs and the consequent reduction in scattering because of the better confinement and the lower doping levels needed for a given sheet charge. Published by Elsevier Ltd. C1 [Bennett, Brian R.; Chick, Theresa F.; Ancona, Mario G.; Boos, J. Brad] USN, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA. RP Bennett, BR (reprint author), USN, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA. EM brian.bennett@nrl.navy.mil RI Bennett, Brian/A-8850-2008 OI Bennett, Brian/0000-0002-2437-4213 FU Office of Naval Research FX The authors thank the Office of Naval Research for funding support. NR 39 TC 7 Z9 7 U1 0 U2 34 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD JAN PY 2013 VL 79 BP 274 EP 280 DI 10.1016/j.sse.2012.08.004 PG 7 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA 071RD UT WOS:000313611000052 ER PT J AU Bebarta, VS Pitotti, R Lairet, J Dixon, P Bush, A Tanen, DA AF Bebarta, Vikhyat S. Pitotti, Rebecca Lairet, Julio Dixon, Patricia Bush, Anneke Tanen, David A. TI Utility of Sodium Thiosulfate in Acute Cyanide Toxicity Reply SO ANNALS OF EMERGENCY MEDICINE LA English DT Letter ID SUS-SCROFA MODEL; HYDROXOCOBALAMIN C1 [Bebarta, Vikhyat S.; Pitotti, Rebecca; Lairet, Julio] San Antonio Mil Med Ctr, Dept Emergency Med, San Antonio, TX USA. [Dixon, Patricia; Bush, Anneke] Wilford Hall USAF Med Ctr, Div Clin Res, San Antonio, TX 78236 USA. [Tanen, David A.] USN, Dept Emergency Med, Med Ctr, San Diego, CA 92152 USA. RP Bebarta, VS (reprint author), San Antonio Mil Med Ctr, Dept Emergency Med, San Antonio, TX USA. RI bebarta, vikhyat/K-3476-2015 NR 6 TC 3 Z9 3 U1 1 U2 2 PU MOSBY-ELSEVIER PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA SN 0196-0644 J9 ANN EMERG MED JI Ann. Emerg. Med. PD JAN PY 2013 VL 61 IS 1 BP 125 EP 126 DI 10.1016/j.annemergmed.2012.08.008 PG 2 WC Emergency Medicine SC Emergency Medicine GA 069WY UT WOS:000313469000031 PM 23260695 ER PT J AU Kleinman, SJ Kepler, SO Koester, D Pelisoli, I Pecanha, V Nitta, A Costa, JES Krzesinski, J Dufour, P Lachapelle, FR Bergeron, P Yip, CW Harris, HC Eisenstein, DJ Althaus, L Corsico, A AF Kleinman, S. J. Kepler, S. O. Koester, D. Pelisoli, Ingrid Pecanha, Viviane Nitta, A. Costa, J. E. S. Krzesinski, J. Dufour, P. Lachapelle, F. -R. Bergeron, P. Yip, Ching-Wa Harris, Hugh C. Eisenstein, Daniel J. Althaus, L. Corsico, A. TI SDSS DR7 WHITE DWARF CATALOG SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE catalogs; magnetic fields; stars: luminosity function, mass function; surveys; white dwarfs ID DIGITAL-SKY-SURVEY; IA PROGENITOR SURVEY; 1ST DATA RELEASE; ELECTRIC MICROFIELD DISTRIBUTIONS; 7TH DATA RELEASE; SPECTROSCOPIC ANALYSIS; ATMOSPHERIC PARAMETERS; PHOTOMETRIC ANALYSIS; SOLAR NEIGHBORHOOD; MASS-DISTRIBUTION AB We present a new catalog of spectroscopically confirmed white dwarf stars from the Sloan Digital Sky Survey (SDSS) Data Release 7 spectroscopic catalog. We find 20,407 white dwarf spectra, representing 19,712 stars, and provide atmospheric model fits to 14,120 DA and 1011 DB white dwarf spectra from 12,843 and 923 stars, respectively. These numbers represent more than a factor of two increase in the total number of white dwarf stars from the previous SDSS white dwarf catalogs based on DR4 data. Our distribution of subtypes varies from previous catalogs due to our more conservative, manual classifications of each star in our catalog, supplementing our automatic fits. In particular, we find a large number of magnetic white dwarf stars whose small Zeeman splittings mimic increased Stark broadening that would otherwise result in an overestimated log g if fit as a non-magnetic white dwarf. We calculate mean DA and DB masses for our clean, non-magnetic sample and find the DB mean mass is statistically larger than that for the DAs. C1 [Kleinman, S. J.; Nitta, A.] Gemini Observ, Hilo, HI 96720 USA. [Kepler, S. O.; Pelisoli, Ingrid; Pecanha, Viviane; Costa, J. E. S.] Univ Fed Rio Grande do Sul, Inst Fis, Porto Alegre, RS, Brazil. [Koester, D.] Univ Kiel, Inst Theoret Phys & Astrophys, D-24098 Kiel, Germany. [Krzesinski, J.] Pedag Univ Cracow, Mt Suhora Observ, PL-30084 Krakow, Poland. [Dufour, P.; Lachapelle, F. -R.; Bergeron, P.] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada. [Yip, Ching-Wa] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Harris, Hugh C.] USN Observ, Flagstaff Stn, Flagstaff, AZ 86001 USA. [Eisenstein, Daniel J.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Althaus, L.; Corsico, A.] Fac Ciencias Astron & Geofis, RA-1900 La Plata, Argentina. RP Kleinman, SJ (reprint author), Gemini Observ, 670 N Aohoku Pl, Hilo, HI 96720 USA. EM hch@nofs.navy.mil RI Kepler, S. O. /H-5901-2012; Pelisoli, Ingrid/H-8619-2014; OI Kepler, S. O. /0000-0002-7470-5703; Lachapelle, Francois-Rene/0000-0003-4997-0449 FU Gemini Observatory; Alfred P. Sloan Foundation; National Science Foundation; U.S. Department of Energy; National Aeronautics and Space Administration; Japanese Monbukagakusho; Max Planck Society; Higher Education Funding Council for England; American Museum of Natural History; Astrophysical Institute Potsdam; University of Basel; University of Cambridge; Case Western Reserve University; University of Chicago; Drexel University; Fermilab; Institute for Advanced Study; Japan Participation Group; Johns Hopkins University; Joint Institute for Nuclear Astrophysics; Kavli Institute for Particle Astrophysics and Cosmology; Korean Scientist Group; Chinese Academy of Sciences (LAMOST); Los Alamos National Laboratory; Max-Planck-Institute for Astronomy (MPIA); Max-Planck-Institute for Astrophysics (MPA); New Mexico State University; Ohio State University; University of Pittsburgh; University of Portsmouth; Princeton University; United States Naval Observatory; University of Washington; NSERC Canada; FQRNT Quebec; FAPERGS; CNPq-Brazil FX We thank Matt Burleigh for thorough and useful comments during the referee process. This work was partially supported by the Gemini Observatory which is operated by the Association of Universities for Research in Astronomy, Inc., on behalf of the international Gemini partnership of Argentina, Australia, Brazil, Canada, Chile, the United Kingdom, and the United States of America. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web Site is http://www.sdss.org/.; The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. The Participating Institutions are the American Museum of Natural History, Astrophysical Institute Potsdam, University of Basel, University of Cambridge, Case Western Reserve University, University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, Ohio State University, University of Pittsburgh, University of Portsmouth, Princeton University, the United States Naval Observatory, and the University of Washington. P. D. is a CRAQ postdoctoral fellow. This work was supported in part by NSERC Canada and FQRNT Quebec. S.O.K., I. P., V.P., and J.E.S. were supported by FAPERGS and CNPq-Brazil. NR 89 TC 129 Z9 129 U1 1 U2 12 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JAN PY 2013 VL 204 IS 1 AR UNSP 5 DI 10.1088/0067-0049/204/1/5 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 070NN UT WOS:000313515500005 ER PT J AU Riemer, M Montgomery, MT Nicholls, ME AF Riemer, M. Montgomery, M. T. Nicholls, M. E. TI Further examination of the thermodynamic modification of the inflow layer of tropical cyclones by vertical wind shear SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID CLOUD MICROPHYSICS PARAMETERIZATION; INTENSITY; HURRICANES; RAMS; MODELS; SENSITIVITY; EVOLUTION; VORTICES; EXCHANGE; IMPACT AB Recent work has developed a new framework for the impact of vertical wind shear on the intensity evolution of tropical cyclones. A focus of this framework is on the frustration of the tropical cyclone's power machine by shear-induced, persistent downdrafts that flush relatively cool and dry (lower equivalent potential temperature, theta(e)) air into the storm's inflow layer. These previous results have been based on idealised numerical experiments for which we have deliberately chosen a simple set of physical parameterisations. Before efforts are undertaken to test the proposed framework with real atmospheric data, we assess here the robustness of our previous results in a more realistic and representative experimental setup by surveying and diagnosing five additional numerical experiments. The modifications of the experimental setup comprise the values of the exchange coefficients of surface heat and momentum fluxes, the inclusion of experiments with ice microphysics, and the consideration of weaker, but still mature tropical cyclones. In all experiments, the depression of the inflow layer theta(e) values is significant and all tropical cyclones exhibit the same general structural changes when interacting with the imposed vertical wind shear. Tropical cyclones in which strong downdrafts occur more frequently exhibit a more pronounced depression of inflow layer theta(e) outside of the eyewall in our experiments. The magnitude of the theta(e) depression underneath the eyewall early after shear is imposed in our experiments correlates well with the magnitude of the ensuing weakening of the respective tropical cyclone. Based on the evidence presented, it is concluded that the newly proposed framework is a robust description of intensity modification in our suite of experiments. C1 [Riemer, M.] Johannes Gutenberg Univ Mainz, Inst Phys Atmosphare, D-55122 Mainz, Germany. [Montgomery, M. T.] USN, Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA. [Montgomery, M. T.] NOAAs Hurricane Res Div, Miami, FL USA. [Nicholls, M. E.] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA. RP Riemer, M (reprint author), Johannes Gutenberg Univ Mainz, Inst Phys Atmosphare, D-55122 Mainz, Germany. EM mriemer@uni-mainz.de RI Riemer, Michael/C-5491-2009 FU NSF [ATM-0715426]; ONR [N0001411WX20095]; NOAA's Hurricane Research Division; National Research Council Research Associateship Award at the Naval Postgraduate School in Monterey, CA, USA FX John Molinari's comments during the review process of RMN10 (available online through the ACPD website at http://www.atmos-chem-phys-discuss.net/9/10711/2009/acpd-9-10711-2009.ht ml) were very helpful for the current study. The thoughtful comments by Roger Smith and an anonymous reviewer have helped to improve the presentation of our results. Most of this research was performed while the first author held a National Research Council Research Associateship Award at the Naval Postgraduate School in Monterey, CA, USA. This work was supported by NSF grant ATM-0715426, the ONR grant N0001411WX20095 and NOAA's Hurricane Research Division. NR 41 TC 19 Z9 19 U1 0 U2 9 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY SN 1680-7316 J9 ATMOS CHEM PHYS JI Atmos. Chem. Phys. PY 2013 VL 13 IS 1 BP 327 EP 346 DI 10.5194/acp-13-327-2013 PG 20 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 070NA UT WOS:000313513700020 ER PT J AU Beal, DN Leinhos, HA Fredette, AR Berube, R AF Beal, David N. Leinhos, Henry A. Fredette, Albert R. Berube, Richard TI Unified Scaling for Flapping Fins SO IEEE JOURNAL OF OCEANIC ENGINEERING LA English DT Article DE Biological system modeling; control system synthesis; fluid dynamics; marine vehicles ID FISH PECTORAL FIN; OSCILLATING FOILS; INSECT FLIGHT; PERFORMANCE; PROPULSION; FORCES; EFFICIENCY AB Conventional scaling for steady-fin or flapping-fin forces in a uniform flow is by definition incompatible with the scaling that has been developed for hovering flapping fins. Most flapping-fin-based vehicles will need to operate in all three operating regimes: fixed fin in cruise, flapping in cruise, and flapping in hover. A unified normalization scheme is proposed to enable smooth and optimal transition of the scaling rules between these regimes. A rigid flapping foil was experimentally tested in a towing tank. The generated side force was found to be a function only of the fin bias angle and the vector magnitude of the inflow and flapping speeds. The thrust was found to be a function of the ratio of fin flapping speed to total speed magnitude in addition to bias and speed magnitude. As an application of this scaling, an algorithm to synthesize the foil motion parameters for a desired thrust and side force regardless of vehicle speed was tested experimentally on a single foil in real time. C1 [Beal, David N.; Leinhos, Henry A.; Fredette, Albert R.; Berube, Richard] USN, UnderseaWarfare Ctr, Newport, RI 02841 USA. RP Beal, DN (reprint author), USN, UnderseaWarfare Ctr, Newport, RI 02841 USA. EM david.beal@navy.mil FU U.S. Office of Naval Research FX This work was supported in part by the U.S. Office of Naval Research (Dr. Thomas McKenna). NR 13 TC 0 Z9 0 U1 0 U2 10 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0364-9059 J9 IEEE J OCEANIC ENG JI IEEE J. Ocean. Eng. PD JAN PY 2013 VL 38 IS 1 BP 1 EP 11 DI 10.1109/JOE.2012.2219412 PG 11 WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA 072SB UT WOS:000313691400001 ER PT J AU Abelev, A Valent, P AF Abelev, Andrei Valent, Philip TI Strain-Rate Dependence of Strength of the Gulf of Mexico Soft Sediments SO IEEE JOURNAL OF OCEANIC ENGINEERING LA English DT Article DE Angular velocity; civil engineering; materials testing; measurement techniques; offshore installations; seafloor; sediments; soil moisture; soil properties ID CLAYS; BEHAVIOR; STRESS AB Many marine civil engineering applications require knowledge and understanding of the behavior and strength properties of soft cohesive marine sediments under high strain-rate conditions, typically encountered during impact penetration events of sediment probes and other objects as a result of free fall through the water column. To investigate these effects, a series of variable rotational rate vane shear tests was performed on a sample of Gulf of Mexico marine mud, using a precision rheometer and spanning the rotational rate range of 0.25-1000 r/min. A wide range of water contents from 55% to 95% (liquidity index: 1.5-3.3) was examined as a primary influence on the response of a particular saturated silty clay material. Nonlinearities in the behavior of this soil were analyzed, and applicability and precision of various models were examined. A modified rate equation is suggested yielding good correlation with experimental data at all water contents and all rotational rates explored. A testing schedule for a complete material constant derivation procedure is outlined. C1 [Abelev, Andrei] USN, Res Lab, Washington, DC 20375 USA. [Valent, Philip] USN, Res Lab, Stennis Space Ctr, MS 39529 USA. RP Abelev, A (reprint author), USN, Res Lab, Washington, DC 20375 USA. EM andrei.abelev@nrl.navy.mil NR 21 TC 1 Z9 1 U1 0 U2 42 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0364-9059 EI 1558-1691 J9 IEEE J OCEANIC ENG JI IEEE J. Ocean. Eng. PD JAN PY 2013 VL 38 IS 1 BP 25 EP 31 DI 10.1109/JOE.2012.2208293 PG 7 WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA 072SB UT WOS:000313691400003 ER PT J AU Bandyopadhyay, PR Thivierge, DP McNeilly, FM Fredette, A AF Bandyopadhyay, Promode R. Thivierge, Daniel P. McNeilly, Frank M. Fredette, Albert TI An Electronic Circuit for Trickle Charge Harvesting From Littoral Microbial Fuel Cells SO IEEE JOURNAL OF OCEANIC ENGINEERING LA English DT Article DE Autonomous sensing; benthic power engineering; littoral basin; microbial fuel cells (MFCs); trickle charge harvesting ID ELECTRICITY-GENERATION; NARRAGANSETT BAY; ENERGY; POWER; VEHICLES; PERFORMANCE; TECHNOLOGY; NANOWIRES; BATTERIES AB In this paper, the design of an electronic circuit for harvesting energy trickling from benthic sources and the long-term performance in powering sensors and devices in a littoral tidal basin are considered. The process has to contend with the randomness, diurnal variations, and low levels and voltages in available energy compared to what is required by oceanographic sensors. The system has two components: a circuit for conditioning the power and a large area electrode array in a littoral basin. The circuit has two stages and is able to overcome the leaks in capacitors used to store the power; the energy is stored first in a small capacitor and then in a large one so that voltages compatible with sensors are produced. The footprint of the anode is 10 m(2) and is inserted into the sediment and the cathode resides in the salt water above the sediment. Several different sensors and actuators have been autonomously powered by the stored energy (4.2 kJ at 12 V). A beacon and an underwater acoustic sensor (5 h of activation of combined hydrophone and three-axis accelerometer sensors, every 40 h; duty cycle has been doubled with recent improvements) have been powered over one to two months. Also, in-water propulsion (for 165 s at a time) of a 25-W biorobotic flapping fin propulsor has been achieved. The system is suitable primarily for powering sensors. It has been operated for more than three years at useful duty cycles, indicating sustainability for autonomous usage. C1 [Bandyopadhyay, Promode R.; Thivierge, Daniel P.; McNeilly, Frank M.; Fredette, Albert] USN, Undersea Warfare Ctr, Autonomous & Defens Syst Dept, Newport, RI 02841 USA. RP Bandyopadhyay, PR (reprint author), USN, Undersea Warfare Ctr, Autonomous & Defens Syst Dept, Newport, RI 02841 USA. EM promode.bandyopadhya@navy.mil FU U.S. Office of Naval Research Biocentric Technology Program [ONR34] FX This work was supported by the U.S. Office of Naval Research Biocentric Technology Program (ONR34). NR 29 TC 9 Z9 9 U1 2 U2 31 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0364-9059 J9 IEEE J OCEANIC ENG JI IEEE J. Ocean. Eng. PD JAN PY 2013 VL 38 IS 1 BP 32 EP 42 DI 10.1109/JOE.2012.2213311 PG 11 WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA 072SB UT WOS:000313691400004 ER PT J AU Zajic, AG Edelmann, GF AF Zajic, Alenka G. Edelmann, Geoffrey F. TI Feasibility Study of Underwater Acoustic Communications Between Buried and Bottom-Mounted Sensor Network Nodes SO IEEE JOURNAL OF OCEANIC ENGINEERING LA English DT Article DE Distributed sensor networks; orthogonal frequency-division multiplexing (OFDM); underwater acoustic communications ID OFDM AB This paper presents a feasibility study of underwater communications between buried sensor network nodes. To investigate this problem, two experiments have been conducted: where some sensor nodes are buried in the sediment, and where all sensor nodes are buried in the sediment. The orthogonal frequency-division multiplexing (OFDM) communications have been chosen to test underwater communications because of its unique strength in handling transmissions over long dispersive channels. Since the existing OFDM schemes for underwater communications are designed to achieve high data rate communications within the water column and are not adequate for communications between sensors placed on the ocean floor, a new low-complexity OFDM receiver has been proposed. The proposed receiver performs frame-by-frame channel estimation, residual phase tracking, diversity combining, and data demodulation. This approach is adopted because of its effectiveness in applications with very fast varying channels and a large number of propagation paths. It is demonstrated that the error-free performance can be achieved between buried sensors using the proposed OFDM receiver. C1 [Zajic, Alenka G.] Georgia Inst Technol, Sch Comp Sci, Atlanta, GA 30332 USA. [Edelmann, Geoffrey F.] USN, Res Lab, Washington, DC 20375 USA. RP Zajic, AG (reprint author), Georgia Inst Technol, Sch Comp Sci, Atlanta, GA 30332 USA. EM azajic@cc.gatech.edu; edelmann@nrl.navy.mil FU U.S. Office of Naval Research FX This work was supported by the U.S. Office of Naval Research. NR 10 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 0364-9059 J9 IEEE J OCEANIC ENG JI IEEE J. Ocean. Eng. PD JAN PY 2013 VL 38 IS 1 BP 109 EP 116 DI 10.1109/JOE.2012.2212832 PG 8 WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA 072SB UT WOS:000313691400011 ER PT J AU Thomas, JP Qidwai, SM Pogue, WR Pham, GT AF Thomas, J. P. Qidwai, S. M. Pogue, W. R., III Pham, G. T. TI Multifunctional structure-battery composites for marine systems SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article DE Carbon; epoxy; lithium-ion; battery; unmanned; Ragone; pouch-cell ID LITHIUM ENERGY CELLS; ION BATTERIES; PERFORMANCE; DESIGN AB Multifunctional structure-battery composites were developed using fiber reinforced marine composites for structure function and rechargeable lithium-ion cells for energy storage and structure function. Laminate, sandwich, and modular beam configurations were fabricated and tested to determine flexural stiffness and strength, energy storage capacity versus discharge rate, and buoyancy (density). The structure-battery composites exhibited higher flexural stiffness but lower strength than equivalent unifunctional designs, energy storage capacities between 40 and 60 Wh/L, and buoyancies bracketing the unifunctional specimen values. Issues requiring further attention include: improved bending strength, simplified fabrication, reversible attachments for modular components, electrical wiring and connections, and battery management circuitry. C1 [Thomas, J. P.; Qidwai, S. M.; Pogue, W. R., III] USN, Res Lab, Multifunct Mat Branch, Washington, DC 20375 USA. [Pham, G. T.] PEO LS, MCSC, Quantico, VA USA. RP Thomas, JP (reprint author), USN, Res Lab, Multifunct Mat Branch, Code 6350,4555 Overlook Ave SW, Washington, DC 20375 USA. EM james.p.thomas@nrl.navy.mil OI Qidwai, Siddiq/0000-0002-2389-118X FU ONR/NRL 6.1 Core Research Funding FX Support of this work under ONR/NRL 6.1 Core Research Funding is gratefully acknowledged. NR 49 TC 10 Z9 10 U1 6 U2 36 PU SAGE PUBLICATIONS LTD PI LONDON PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND SN 0021-9983 J9 J COMPOS MATER JI J. Compos Mater. PD JAN PY 2013 VL 47 IS 1 SI SI BP 5 EP 26 DI 10.1177/0021998312460262 PG 22 WC Materials Science, Composites SC Materials Science GA 074OO UT WOS:000313822200002 ER PT J AU MacGregor, AJ Dougherty, AL Tang, JJ Galarneau, MR AF MacGregor, Andrew J. Dougherty, Amber L. Tang, Janet J. Galarneau, Michael R. TI Postconcussive Symptom Reporting Among US Combat Veterans With Mild Traumatic Brain Injury From Operation Iraqi Freedom SO JOURNAL OF HEAD TRAUMA REHABILITATION LA English DT Article DE combat; concussion; depression; mild traumatic brain injury; military; posttraumatic stress disorder; PTSD ID POSTTRAUMATIC-STRESS-DISORDER; MENTAL-HEALTH PROBLEMS; WAR VETERANS; AFGHANISTAN; DEPRESSION; DEPLOYMENT; OUTCOMES; RATES; CARE AB Objective: To examine the association between postconcussive symptoms and mild traumatic brain injury (MTBI) among combat veterans while adjusting for posttraumatic stress disorder (PTSD) and depression. Patients: Military personnel with provider-diagnosed MTBI (n = 334) or nonhead injury (n = 658) were identified from the Expeditionary Medical Encounter Database. Main Outcome Measures: Post-Deployment Health Assessments and Re-Assessments were used to examine postconcussive symptoms and self-rated health. Results: Personnel with MTBI were more likely to report headache (odds ratio [OR] = 3.37; 95% confidence interval [CI] = 2.19-5.17), back pain (OR = 1.79; 95% CI = 1.23-2.60), memory problems (OR = 1.86; 95% CI = 1.20-2.88), tinnitus (OR = 1.63; 95% CI = 1.10-2.41), and dizziness (OR = 2.13; 95% CI = 1.06-4.29) compared with those with non-head injuries. Among those with MTBI, self-reported decline in health was associated with memory problems (OR = 5.07; 95% CI = 2.56-10.02) and dizziness (OR = 10.60; 95% CI = 3.48-32.27). Conclusions: Mild traumatic brain injury is associated with reports of negative health consequences among combat veterans even when accounting for co-occurring psychological morbidity. The identification of postconcussive symptoms related to declines in a service member's self-rated health may be important in targeting and prioritizing clinical interventions. C1 [MacGregor, Andrew J.; Dougherty, Amber L.; Tang, Janet J.; Galarneau, Michael R.] USN, Hlth Res Ctr, Dept Med Modeling Simulat & Mission Support, San Diego, CA 92106 USA. RP Dougherty, AL (reprint author), USN, Hlth Res Ctr, Dept Med Modeling Simulat & Mission Support, 140 Sylvester Rd, San Diego, CA 92106 USA. EM amber.dougherty@med.navy.mil FU US Navy Bureau of Medicine under the Wounded, Ill and Injured/Psychological Health/Traumatic Brain Injury Program [60819] FX This work was supported by the US Navy Bureau of Medicine under the Wounded, Ill and Injured/Psychological Health/Traumatic Brain Injury Program, Work Unit No. 60819. NR 42 TC 18 Z9 18 U1 1 U2 18 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0885-9701 J9 J HEAD TRAUMA REHAB JI J. Head Trauma Rehabil. PD JAN-FEB PY 2013 VL 28 IS 1 BP 59 EP 67 DI 10.1097/HTR.0b013e3182596382 PG 9 WC Clinical Neurology; Rehabilitation SC Neurosciences & Neurology; Rehabilitation GA 070ZW UT WOS:000313555400007 PM 22688214 ER PT J AU Nguyen, S LeardMann, CA Smith, B Conlin, AMS Slymen, DJ Hooper, TI Ryan, MAK Smith, TC AF Nguyen, Stacie LeardMann, Cynthia A. Smith, Besa Conlin, Ava Marie S. Slymen, Donald J. Hooper, Tomoko I. Ryan, Margaret A. K. Smith, Tyler C. CA Millennium Cohort Study Team TI Is Military Deployment a Risk Factor for Maternal Depression? SO JOURNAL OF WOMENS HEALTH LA English DT Article ID MILLENNIUM COHORT; POSTPARTUM DEPRESSION; MENTAL-HEALTH; US MILITARY; FOLLOW-UP; PREVALENCE; VALIDATION; COMBAT; WOMEN; CARE AB Background: Maternal depression is a common condition among new mothers that can be associated with poor maternal health and negative consequences on infant health. Little research has been conducted to examine maternal depression, especially among military mothers, where unique conditions often exist. Using data from a large military cohort, this study prospectively examined the relationship between deployment experience before and after childbirth and maternal depression among U.S. servicewomen. Methods: The study included 1,660 female Millennium Cohort participants who gave birth during active duty service and completed baseline and follow-up questionnaires between 2001 and 2008. Maternal depression was assessed at follow-up using Primary Care Evaluation of Mental Disorders Patient Health Questionnaire criteria. Results: Deployment before childbirth, regardless of combat experience, and deployment without combat experience after childbirth did not increase the risk of maternal depression. Women who deployed and reported combat experience after childbirth were at increased risk for maternal depression compared with nondeployed women who gave birth (adjusted odds ratio [OR] 2.01, 95% confidence interval [CI] 1.17-3.43). Among the subgroup of female combat deployers, however, women who gave birth did not have a significantly increased risk for depression compared with those who did not give birth. Conclusions: Military women who deployed with combatlike experiences after childbirth were at increased risk for postdeployment maternal depression. The risk, however, appeared primarily related to combat rather than childbirth-related experiences. C1 [Nguyen, Stacie; LeardMann, Cynthia A.; Smith, Besa; Conlin, Ava Marie S.; Smith, Tyler C.] USN, Dept Deployment Hlth Res, Hlth Res Ctr, San Diego, CA 92106 USA. [Slymen, Donald J.] San Diego State Univ, Grad Sch Publ Hlth, San Diego, CA 92182 USA. [Hooper, Tomoko I.] Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, Bethesda, MD 20814 USA. [Ryan, Margaret A. K.] USN, Hosp Camp Pendleton, Camp Pendleton, CA USA. RP LeardMann, CA (reprint author), USN, Dept Deployment Hlth Res, Hlth Res Ctr, 140 Sylvester Rd, San Diego, CA 92106 USA. EM cynthia.leardmann@med.navy.mil FU U.S. Department of Defense [60002]; Military Operational Medicine Research Program of the U.S. Army Medical Research and Materiel Command, Fort Detrick, MD FX This study represents NHRC report 11-44, supported by the U.S. Department of Defense, under work unit No. 60002, and funded by the Military Operational Medicine Research Program of the U.S. Army Medical Research and Materiel Command, Fort Detrick, MD. The views expressed in this article are those of the authors and do not reflect the official policy or position of the U.S. Department of the Navy, U.S. Department of the Army, U.S. Department of the Air Force, U.S. Department of Defense, U.S. Department of Veterans Affairs, or the U.S. Government. Approved for public release; distribution is unlimited. The funding organizations had no role in the design and conduct of the study; collection, analysis, or preparation of data; or preparation, review, or approval of the manuscript. NR 40 TC 8 Z9 8 U1 1 U2 12 PU MARY ANN LIEBERT INC PI NEW ROCHELLE PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA SN 1540-9996 J9 J WOMENS HEALTH JI J. Womens Health PD JAN PY 2013 VL 22 IS 1 BP 9 EP 18 DI 10.1089/jwh.2012.3606 PG 10 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Obstetrics & Gynecology; Women's Studies SC Public, Environmental & Occupational Health; General & Internal Medicine; Obstetrics & Gynecology; Women's Studies GA 071HE UT WOS:000313580800004 PM 23051068 ER PT J AU Gonzalez-Martin, C Teigell-Perez, N Lyles, M Valladares, B Griffin, DW AF Gonzalez-Martin, Cristina Teigell-Perez, Nuria Lyles, Mark Valladares, Basilio Griffin, Dale W. TI Epifluorescent direct counts of bacteria and viruses from topsoil of various desert dust storm regions SO RESEARCH IN MICROBIOLOGY LA English DT Article DE Desert soils; Bacteria; Viruses; Direct counts; Dust storms ID MICROORGANISMS; ENVIRONMENTS; MENINGITIS; TRANSPORT; DIVERSITY; AFRICA; SOILS AB Topsoil from arid regions is the main source of dust clouds that move through the earth's atmosphere, and microbial communities within these soils can survive long-range dispersion. Microbial abundance and chemical composition were analyzed in topsoil from various desert regions. Statistical analyses showed that microbial direct counts were strongly positively correlated with calcium concentrations and negatively correlated with silicon concentrations. While variance between deserts was expected, it was interesting to note differences between sample sites within a given desert region, illustrating the 'patchy' nature of microbial communities in desert environments. (C) 2012 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved. C1 [Gonzalez-Martin, Cristina; Teigell-Perez, Nuria; Valladares, Basilio] Univ Inst Trop Dis & Publ Hlth Canary Isl, Tenerife 38203, Canary Islands, Spain. [Lyles, Mark] USN, War Coll, Ctr Naval Warfare Studies, Newport, RI 02841 USA. [Griffin, Dale W.] US Geol Survey, Geol Discipline, Tallahassee, FL 32303 USA. RP Gonzalez-Martin, C (reprint author), Univ Inst Trop Dis & Publ Hlth Canary Isl, Tenerife 38203, Canary Islands, Spain. EM cristina.bio.ull@gmail.com; nteigell@gmail.com; Mark.Lyles@usnwc.edu; bvallada@ull.es; dgriffin@usgs.gov FU Spanish Ministry of Science and Innovation [CGL2010-21366-C04-01]; USGS office in Tallahassee, FL, USA FX This work was partially supported by the Spanish Ministry of Science and Innovation, through I + D project CGL2010-21366-C04-01. We thank all personnel from the USGS office in Tallahassee, FL, USA for their hospitality and support. The use of trade names is for descriptive purposes only and does not infer endorsement by the U.S. Government. The USGS is exempt from any liability derived from this paper. NR 18 TC 6 Z9 6 U1 2 U2 16 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0923-2508 J9 RES MICROBIOL JI Res. Microbiol. PD JAN PY 2013 VL 164 IS 1 BP 17 EP 21 DI 10.1016/j.resmic.2012.08.009 PG 5 WC Microbiology SC Microbiology GA 070VU UT WOS:000313542400004 PM 22989672 ER PT J AU Hoheisel, R Dimroth, F Bett, AW Messenger, SR Jenkins, PP Walters, RJ AF Hoheisel, Raymond Dimroth, Frank Bett, Andreas W. Messenger, Scott R. Jenkins, Phillip P. Walters, Robert J. TI Electroluminescence analysis of irradiated GaInP/GaInAs/Ge space solar cells SO SOLAR ENERGY MATERIALS AND SOLAR CELLS LA English DT Article DE Solar cell; Space; Degradation; III-V; Electroluminescence; Multi-junction ID DEGRADATION AB Electroluminescence measured at different injection current densities is used to study the effect of particle irradiation on GaInP/GaInAs/Ge triple-junction solar cells. By employing the optoelectronic reciprocity relation, the irradiation-induced degradation in the J-V characteristics of all individual subcells and their underlying diode saturation parameters is derived. Also, the dependence of the solar cell irradiation response on the position of the irradiation-induced non-radiative recombination centers within the cell active region, i.e., the quasi-neutral regions and the space charge region, is discussed. (C) 2012 Elsevier B.V. All rights reserved. C1 [Hoheisel, Raymond] George Washington Univ, Washington, DC 20037 USA. [Hoheisel, Raymond; Dimroth, Frank; Bett, Andreas W.] Fraunhofer Inst Solar Energy Syst, D-79110 Freiburg, Germany. [Messenger, Scott R.; Jenkins, Phillip P.; Walters, Robert J.] USN, Res Lab, Washington, DC 20375 USA. RP Hoheisel, R (reprint author), George Washington Univ, 2121 1 St NW, Washington, DC 20037 USA. EM hoheisel@ccs.nrl.navy.mil NR 19 TC 21 Z9 21 U1 3 U2 49 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-0248 J9 SOL ENERG MAT SOL C JI Sol. Energy Mater. Sol. Cells PD JAN PY 2013 VL 108 BP 235 EP 240 DI 10.1016/j.solmat.2012.06.015 PG 6 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA 071PX UT WOS:000313607800036 ER PT J AU Biffinger, JC Fitzgerald, LA Howard, EC Petersen, ER Fulmer, PA Wu, PK Ringeisen, BR AF Biffinger, Justin C. Fitzgerald, Lisa A. Howard, Erinn C. Petersen, Emily R. Fulmer, Preston A. Wu, Peter K. Ringeisen, Bradley R. TI Controlling autonomous underwater floating platforms using bacterial fermentation SO APPLIED MICROBIOLOGY AND BIOTECHNOLOGY LA English DT Article DE Clostridium acetobutylicum; Hydrogen; Pressure; Ballast; Fermentation ID BIOHYDROGEN PRODUCTION; CLOSTRIDIUM-ACETOBUTYLICUM; HIGH-PRESSURE; POWER; PERSPECTIVES; CHALLENGES AB Biogenic gas has a wide range of energy applications from being used as a source for crude bio-oil components to direct ignition for heating. The current study describes the use of biogenic gases from Clostridium acetobutylicum for a new application-renewable ballast regeneration for autonomous underwater devices. Uninterrupted (continuous) and blocked flow (pressurization) experiments were performed to determine the overall biogas composition and total volume generated from a semirigid gelatinous matrix. For stopped flow experiments, C. acetobutylicum generated a maximum pressure of 55 psi over 48 h composed of 60 % hydrogen gas when inoculated in a 5 % agar (w/v) support with 5 % glucose (w/v) in the matrix. Typical pressures over 24 h at 318 K ranged from 10 to 33 psi. These blocked flow experiments show for the first time the use of microbial gas production as a way to repressurize gas cylinders. Continuous flow experiments successfully demonstrated how to deliver biogas to an open ballast control configuration for deployable underwater platforms. This study is a starting point for engineering and microbiology investigations of biogas which will advance the integration of biology within autonomous systems. C1 [Biffinger, Justin C.; Fitzgerald, Lisa A.; Howard, Erinn C.; Fulmer, Preston A.; Ringeisen, Bradley R.] USN, Res Lab, Div Chem, Washington, DC 20375 USA. [Petersen, Emily R.] Nova Res Inc, Alexandria, VA 22308 USA. [Wu, Peter K.] So Oregon Univ, Dept Phys, Ashland, OR 97520 USA. RP Biffinger, JC (reprint author), USN, Res Lab, Div Chem, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM justin.biffinger@nrl.navy.mil RI Fulmer, Preston/L-7702-2014 OI Fulmer, Preston/0000-0002-2981-576X FU Naval Research Laboratory/Office of Naval Research FX The authors thank the Naval Research Laboratory/Office of Naval Research 6.2 program for funding and Glenn R. Johnson and co-workers (Air Force Research Laboratory, Tyndall AFB) for organizing, providing supplies and support, and assisting the field deployment demonstration. The authors thank Barry J. Spargo for his support and advice for this program. Field deployment of the zero power-consuming ballast control system was a joint collaboration between the U. S. Naval Research Laboratory (J. Biffinger), the U. S. Air Force Research Laboratory (G. Johnson), and the University of New Mexico (P. Atanassov). NR 26 TC 0 Z9 0 U1 0 U2 17 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0175-7598 J9 APPL MICROBIOL BIOT JI Appl. Microbiol. Biotechnol. PD JAN PY 2013 VL 97 IS 1 BP 135 EP 142 DI 10.1007/s00253-012-4296-5 PG 8 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 064HS UT WOS:000313065400012 PM 22851013 ER PT J AU Burns, CJ Chung, KK Aden, JK Lundy, JB Nitzschke, SL Renz, EM Cancio, LC AF Burns, Christopher J. Chung, Kevin K. Aden, James K. Lundy, Jonathan B. Nitzschke, Stephanie L. Renz, Evan M. Cancio, Leopoldo C. TI High Risk But Not Always Lethal: The Effect of Cirrhosis on Thermally Injured Adults SO JOURNAL OF BURN CARE & RESEARCH LA English DT Article ID STAGE LIVER-DISEASE; ABDOMINAL OPERATIONS; NONHEPATIC SURGERY; MODEL; MORTALITY; SCORE AB The aim of this article was to determine the effect of cirrhosis on mortality in thermally injured adult patients. We conducted a retrospective review of patients admitted to our burn center during 2003 to 2010. Eight hundred eight patients were included in this study, of whom 24 had the diagnosis of cirrhosis established from electronic medical records and/or autopsy reports. The mortality rate for the cirrhotic patients was 50%, and for the noncirrhotic patients it was 14.8%. On logistic regression, age (odds ratio [OR], 1.08; confidence interval [CI], 1.06-1.10), TBSA (OR, 1.08; CI, 1.06-1.10), inhalation injury (OR, 3.17, CI, 1.61-6.25), and cirrhosis (OR, 8.78; CI, 2.97-25.98) had independent effects on mortality. Of the 24 cirrhotic patients in this study, the admission Model for End-Stage Liver Disease score for the patients who survived hospitalization was 12.1 +/- 4.0, and for the patients who died it was 13.8 +/- 6.0 (P = .4). When comparing patients with 10 to 50% TBSA burn, the mortality rate for cirrhotic patients was 83.3% (10/12), and for the noncirrhotic patients it was only 12.7% (50/394), P < .0001. Adults with cirrhosis are rarely able to survive burn injuries > 10% TBSA. Although we did not detect a significant association between admission Model for End-Stage Liver Disease score and death, the presence of cirrhosis is a high premorbid contributor and, therefore, new strategies are needed to improve outcomes. (J Burn Care Res 2013;34:115-119) C1 [Burns, Christopher J.; Chung, Kevin K.; Aden, James K.; Lundy, Jonathan B.; Nitzschke, Stephanie L.; Renz, Evan M.; Cancio, Leopoldo C.] USA, Inst Surg Res, Ft Sam Houston, TX 78234 USA. [Burns, Christopher J.] USN, Med Res Unit, Ft Sam Houston, TX USA. RP Chung, KK (reprint author), USA, Inst Surg Res, 3698 Chambers Pass, San Antonio, TX 78234 USA. NR 23 TC 2 Z9 2 U1 0 U2 0 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 1559-047X J9 J BURN CARE RES JI J. Burn Care Res. PD JAN-FEB PY 2013 VL 34 IS 1 BP 115 EP 119 DI 10.1097/BCR.0b013e318269be4a PG 5 WC Emergency Medicine; Dermatology; Surgery SC Emergency Medicine; Dermatology; Surgery GA 068IH UT WOS:000313359400027 PM 23292579 ER PT J AU Park, MS Elsberry, RL AF Park, Myung-Sook Elsberry, Russell L. TI Latent Heating and Cooling Rates in Developing and Nondeveloping Tropical Disturbances during TCS-08: TRMM PR versus ELDORA Retrievals SO JOURNAL OF THE ATMOSPHERIC SCIENCES LA English DT Article ID DOPPLER RADAR DATA; SPECTRAL RETRIEVAL; SQUALL-LINE; PART I; MESOSCALE; MODEL; THERMODYNAMICS; MICROPHYSICS; CYCLOGENESIS; KINEMATICS AB Unique sets of Electra Doppler Radar (ELDORA) observations in both developing and nondeveloping tropical disturbances in the western North Pacific are used to retrieve latent heating and cooling rates. During the reintensification of Sinlaku, maximum heating rates of about 80 K h(-1) are diagnosed in the upper troposphere in the region of a strong updraft and maximum cooling rates of about -45 K h(-1) are diagnosed in the lower troposphere in the region of a strong convective-scale downdraft. The southern convective burst in the pre-Nuri mission had a lower-tropospheric maximum in latent heating that was a more favorable condition for tropical cyclone formation than was the upper-tropospheric maximum in heating and the lower-tropospheric maximum in cooling in the northern convective burst. Two nondeveloping tropical disturbances had deeper layers of more uniform heating and of cooling rates, and some evidence of more shallow cloud tops, that distinguished them from the developing cases. Although the Shige et al. Tropical Rainfall Measuring Mission (TRMM) precipitation radar (PR) algorithm was only intended to be applied over large areas on longer time scales, the PR-derived latent heating profiles were compared with the ELDORA-derived profiles to reveal important mesoscale effects. Because all six cases indicated near-zero cooling rates, a new TRMM PR algorithm should be developed that would include the effects of saturated convective-scale downdrafts in tropical mesoscale convective systems (MCSs). Production of a legacy TRMMPR dataset with this improvement would be useful for diagnosing tropical cyclone formation dating back to 1998, and for specifying initial and validation conditions for numerical models in the tropics. C1 [Park, Myung-Sook; Elsberry, Russell L.] USN, Postgrad Sch, Dept Meteorol, Grad Sch Engn & Appl Sci, Monterey, CA 93943 USA. RP Park, MS (reprint author), USN, Postgrad Sch, Dept Meteorol, Grad Sch Engn & Appl Sci, 589 Dyer Rd, Monterey, CA 93943 USA. EM mpark@nps.edu FU Office of Naval Research; National Science Foundation FX This study was performed during the first author's National Research Council Associateship at the Naval Postgraduate School (NPS), Monterey, California. The participation of the second author was funded by the Office of Naval Research and the National Science Foundation. Dr. Michael M. Bell provided a great contribution to this research by guiding the first author in the analysis and interpretation of the ELDORA observations that were provided by the Earth Observing Laboratory at the National Center for Atmospheric Research (NCAR). His contribution to this research is particularly appreciated. Prof. Patrick Harr is acknowledged for his leadership of the TCS-08 experiment and comments on this work, and many scientists at NPS, Naval Research Lab in Monterey, and NCAR did great jobs in conjunction with the ELDORA operation and processing. Profs. Takayabu and Shige, who did the challenging work developing the TRMM PR SLH heating algorithm, provided guidance in interpreting this product. The NRL provided Goggle Earth files to make Figs. 1a, 1d, 7a, and 7d, and Figs. S1a and S1d. Mrs. Penny Jones provided skillful manuscript assistance. The first author thanks the editor and the reviewers for providing many constructive comments. NR 38 TC 10 Z9 10 U1 0 U2 8 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0022-4928 J9 J ATMOS SCI JI J. Atmos. Sci. PD JAN PY 2013 VL 70 IS 1 BP 15 EP 35 DI 10.1175/JAS-D-12-083.1 PG 21 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 068KH UT WOS:000313365100003 ER PT J AU Park, MS Penny, AB Elsberry, RL Billings, BJ Doyle, JD AF Park, Myung-Sook Penny, Andrew B. Elsberry, Russell L. Billings, Brian J. Doyle, James D. TI Latent Heating and Cooling Rates in Developing and Nondeveloping Tropical Disturbances during TCS-08: Radar-Equivalent Retrievals from Mesoscale Numerical Models and ELDORA SO JOURNAL OF THE ATMOSPHERIC SCIENCES LA English DT Article ID PART I; CONVECTIVE SYSTEMS; MONSOON EXPERIMENT; WESTERN PACIFIC; DEEP CONVECTION; PRECIPITATION; CYCLONES; CYCLOGENESIS; SIMULATIONS; CLOUD AB Latent heating and cooling rates have a critical role in predicting tropical cyclone formation and intensification. In a prior study, Park and Elsberry estimated the latent heating and cooling rates from aircraft Doppler radar [Electra Doppler Radar (ELDORA)] observations for two developing and two nondeveloping tropical disturbances during the Tropical Cyclone Structure 2008 (TCS-08) field experiment. In this study, equivalent retrievals of heating rates from two mesoscale models with 1-km resolution are calculated with the same radar thermodynamic retrieval. Contoured frequency altitude diagrams and vertical profiles of the net latent heating rates from the model are compared with the ELDORA-retrieved rates in similar cloud-cluster regions relative to the center of circulation. In both the developing and nondeveloping cases, the radar-equivalent retrievals from the two models tend to overestimate heating for less frequently occurring, intense convective cells that contribute to positive vorticity generation and spinup in the lower troposphere. The model maximum cooling rates are consistently smaller in magnitude than the heating maxima for the nondeveloping cases as well as the developing cases. Whereas in the model the cooling rates are predominantly associated with melting processes, the effects of evaporative cooling are underestimated in convective downdraft regions and at upper levels. Because of the net warming of the columns, the models tend to overintensify the lower-tropospheric circulations if these intense convective cells are close to the circulation center. Improvements in the model physical process representations are required to realistically represent the evaporative cooling effects. C1 [Park, Myung-Sook; Penny, Andrew B.; Elsberry, Russell L.] USN, Postgrad Sch, Dept Meteorol, Grad Sch Engn & Appl Sci, Monterey, CA 93943 USA. [Billings, Brian J.] CNR, Monterey, CA USA. [Doyle, James D.] USN, Res Lab, Monterey, CA 93943 USA. RP Park, MS (reprint author), USN, Postgrad Sch, Dept Meteorol, Grad Sch Engn & Appl Sci, 589 Dyer Rd, Monterey, CA 93943 USA. EM mpark@nps.edu FU Office of Naval Research (ONR) [0603207N]; National Science Foundation; Department of Defense (DoD) High Performance FX This study was performed during the first author's National Research Council (NRC) Research Associateship Program (RAP) at the Naval Postgraduate School (NPS), Monterey, California. The participation of the fourth author was also done during his NRC RAP at the Naval Research Laboratory. The participation of the second and third authors was funded by the Office of Naval Research (ONR) and the National Science Foundation. Computing resources at NPS were provided by the NPS High Performance Computing Center, and the initial conditions for the WRF integrations were provided by the European Centre for Medium-Range Weather Forecasts. The fourth and fifth authors acknowledge support through the ONR Program Element 0603207N and support for computational resources through a grant from the Department of Defense (DoD) High Performance, with computing time from the DoD Supercomputing Resource Centers at Stennis Space Center in Mississippi and at Wright-Patterson Air force Base in Ohio. Mrs. Penny Jones provided skillful manuscript preparation assistance. NR 43 TC 5 Z9 5 U1 0 U2 6 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0022-4928 J9 J ATMOS SCI JI J. Atmos. Sci. PD JAN PY 2013 VL 70 IS 1 BP 37 EP 55 DI 10.1175/JAS-D-11-0311.1 PG 19 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 068KH UT WOS:000313365100004 ER PT J AU Moore, RW Montgomery, MT Davies, H AF Moore, Richard W. Montgomery, Michael T. Davies, Huw TI Genesis Criteria for Diabatic Rossby Vortices: A Model Study SO MONTHLY WEATHER REVIEW LA English DT Article ID LIVED MESOCONVECTIVE VORTICES; MOIST BAROCLINIC ATMOSPHERE; CYCLOGENESIS; ENVIRONMENT; DYNAMICS; VORTEX; FRONTOGENESIS; CLIMATOLOGY; SIMULATIONS; CIRCULATION AB A suite of idealized mesoscale model simulations are conducted to examine the dynamic pathway to the genesis of short-scale, moist baroclinic disturbances. It is shown that in an initially subsaturated environment, two distinct stages of development are necessary before a preexisting surface-concentrated, warm-core vortex can begin to amplify. The first stage, termed environmental preconditioning, involves the moistening of the lower atmosphere via the transport of relatively high equivalent potential temperature air into the immediate environment of the translating vortex. The second stage results from continuous cloud diabatic processes and it involves the emergence of a low-level positive potential vorticity (PV) anomaly with some evidence of a further, more diffuse, negative PV anomaly at higher elevations. The PV structure is characteristic of a diabatic Rossby vortex (DRV). The disturbance does not begin to amplify until the magnitude and coherence of the low-level PV structure allows for the sufficient production of eddy available potential energy through diabatic processes to overcome frictional dissipation, and this necessitates forced convection for a finite period of time. A comparison of the simulated disturbance structure with observed DRVs lends credence to the idealized model results. Furthermore, the simulations facilitate the identification of an amplitude threshold for DRV genesis that is defined as a function of both environmental parameters (baroclinicity and moisture content) and the strength of an initial disturbance. In particular, if, given a background environment, the amplitude of an initial disturbance is not sufficiently large, frictional processes will inhibit the genesis of a growing disturbance within a realistic time frame. C1 [Moore, Richard W.; Montgomery, Michael T.] USN, Dept Meteorol, Postgrad Sch, Monterey, CA 93943 USA. [Davies, Huw] ETH, Inst Atmospher & Climate Sci IACETH, Zurich, Switzerland. RP Moore, RW (reprint author), USN, Dept Meteorol, Postgrad Sch, 589 Dyer Rd, Monterey, CA 93943 USA. EM rwmoor1@nps.edu FU Swiss National Science Foundation [200020-105197/1]; National Science Foundation [AGS-0305412, AGS-0733380, AGS-0849356] FX This work was supported by the Swiss National Science Foundation Grant 200020-105197/1 and National Science Foundation Grants AGS-0305412, AGS-0733380, and AGS-0849356. We would also like to thank Maxi Boettcher, Russ Schumacher, and Heini Wernli for their constructive comments. NR 31 TC 8 Z9 8 U1 1 U2 8 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0027-0644 J9 MON WEATHER REV JI Mon. Weather Rev. PD JAN PY 2013 VL 141 IS 1 BP 252 EP 263 DI 10.1175/MWR-D-12-00080.1 PG 12 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA 064MH UT WOS:000313078900014 ER PT J AU Gunlycke, D Vasudevan, S White, CT AF Gunlycke, Daniel Vasudevan, Smitha White, Carter T. TI Confinement, Transport Gap, and Valley Polarization in Graphene from Two Parallel Decorated Line Defects SO NANO LETTERS LA English DT Article DE Graphene; quantum transport; resonant tunneling; transport barrier; transport gap; valley polarization ID CARBON NANOTUBES; LAYER GRAPHENE; NANORIBBONS; GRAPHITE; EDGE AB Quantum transport calculations show that a transport gap approximately E-g = 2hv(F)/W can be engineered in graphene using two parallel transport barriers, separated by W, extended along the zigzag direction. The barriers, modeled by chemically decorated observed line defects, create confinement and resonance bands tracing the bands in zigzag nanoribbons. The resonance bands terminate at the dimensional crossover, where the states become boundary-localized, leaving the transport gap. The structure also allows for nearly perfect valley polarization. C1 [Gunlycke, Daniel; White, Carter T.] USN, Res Lab, Div Chem, Washington, DC 20375 USA. [Vasudevan, Smitha] George Washington Univ, Dept Chem, Washington, DC 20052 USA. RP Gunlycke, D (reprint author), USN, Res Lab, Div Chem, Washington, DC 20375 USA. EM daniel.gunlycke.sw@nrl.navy.mil FU U.S. Office of Naval Research; U.S. Naval Research Laboratory FX The authors acknowledge support from the U.S. Office of Naval Research, directly and through the U.S. Naval Research Laboratory. NR 23 TC 22 Z9 22 U1 1 U2 65 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 EI 1530-6992 J9 NANO LETT JI Nano Lett. PD JAN PY 2013 VL 13 IS 1 BP 259 EP 263 DI 10.1021/nl304015q 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 065IP UT WOS:000313142300044 PM 23215005 ER PT J AU Schwer, D Kailasanath, K AF Schwer, Douglas Kailasanath, K. TI Fluid dynamics of rotating detonation engines with hydrogen and hydrocarbon fuels SO PROCEEDINGS OF THE COMBUSTION INSTITUTE LA English DT Article DE RDE; Hydrocarbon; Simulation; Continuous detonation AB Rotating detonation engines (RDE's) represent a logical step from pulsed detonation engine concepts to a continuous detonation engine concept for obtaining propulsion from the high efficiency detonation cycle. The hydrogen/air and hydrogen/oxygen RDE concepts have been most extensively studied, however, being able to use hydrocarbon fuels is essential for practical RDE's. The current paper extends our hydrogen/air model to hydrocarbon fuels with both air and pure oxygen as the oxidizer. Before beginning the RDE calculations, several detonation tube results are summarized showing the ability of the code to reproduce the correct detonation velocity and CJ properties. In addition, a calculation capturing the expected irregular detonation cell patterns of ethylene/air is also shown. To do the full range of fuels and oxidizers, we found the use of temperature-dependent thermodynamic properties to be essential, especially for hydrocarbon/oxygen mixtures. The overall results for air-breathing RDE's with hydrocarbons ranged from 1990 to 2540 s, while in pure oxygen mode the specific impulse varied from 700 to 1070 s. These results were between 85% and 89% of the expected ideal detonation cycle results, and are in line with previous hydrogen/air estimates from our previous work. We conclude from this that hydrocarbon RDE's are viable and that the basic flow-field patterns and behaviors are very similar to the hydrogen/air cases detailed previously. Published by Elsevier Inc. on behalf of The Combustion Institute. C1 [Schwer, Douglas] USN, Res Lab, Lab Computat Phys, Washington, DC 20375 USA. USN, Res Lab, Lab Fluid Dynam, Washington, DC 20375 USA. RP Schwer, D (reprint author), USN, Res Lab, Lab Computat Phys, Code 6041,4555 Overlook Ave SW, Washington, DC 20375 USA. EM schwer@lcp.nrl.navy.mil NR 16 TC 22 Z9 25 U1 6 U2 57 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 1540-7489 EI 1873-2704 J9 P COMBUST INST JI Proc. Combust. Inst. PY 2013 VL 34 BP 1991 EP 1998 DI 10.1016/j.proci.2012.05.046 PN 2 PG 8 WC Thermodynamics; Energy & Fuels; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA 065ES UT WOS:000313131800012 ER PT J AU Taylor, BD Kessler, DA Gamezo, VN Oran, ES AF Taylor, B. D. Kessler, D. A. Gamezo, V. N. Oran, E. S. TI Numerical simulations of hydrogen detonations with detailed chemical kinetics SO PROCEEDINGS OF THE COMBUSTION INSTITUTE LA English DT Article DE Detonation cells; Numerical simulation; Hydrogen; Chemical kinetics; Vibrational relaxation ID CELL STRUCTURES; AIR MIXTURES; WAVES; RELAXATION; ALGORITHMS AB Time-dependent, multidimensional simulations of unstable propagating detonations were performed using a detailed thermochemical reaction model for a stoichiometric argon-diluted hydrogen-oxygen mixture at low pressures and a hydrogen-air mixture at atmospheric pressure. Detonation cells computed for the low-pressure, dilute H-2-O-2-Ar systems were regular in shape, and their sizes compared reasonably well with experimental observations. The computed H-2-air cells at atmospheric conditions were qualitatively different from those observed in experiments, and their widths range from less than 1 mm to nearly 5 mm with multilevel hierarchal structures. The effective activation energy of the H-2-air mixture, based on constant-volume ignition delay times computed using the detailed thermochemical model, varies between 5 and 40 over the range of post-shock temperatures and pressures in the simulations and is, on average, significantly larger than expected based on the regularity of experimental cellular patterns. Analysis of the simulations suggests that vibrational relaxation of the gas molecules, a process which is ignored when calibrating detailed chemical reaction models, occurs on time scales similar to the ignition delay times for the detonations and may be a source of discrepancy between numerical and experimental results. (C) 2012 The Combustion Institute. Published by Elsevier Inc. All rights reserved. C1 [Taylor, B. D.] USN, Res Lab, Lab Computat Phys, Washington, DC 20375 USA. USN, Res Lab, Lab Fluid Dynam, Washington, DC 20375 USA. RP Taylor, BD (reprint author), USN, Res Lab, Lab Computat Phys, Code 6043,4555 Overlook Ave SW, Washington, DC 20375 USA. EM bdtaylor@lcp.nrl.navy.mil FU Naval Research Laboratory through the Office of Naval Research; National Research Council Postdoctoral Research Associateship Program FX This work was supported by the Naval Research Laboratory through the Office of Naval Research and the National Research Council Postdoctoral Research Associateship Program. Computational facilities were provided by the Laboratories for Computational Physics and Fluid Dynamics and the DoD High Performance Computing Modernization Program. The authors thank Michael Burke, Yiguang Ju, Wing Tsang, David Sheen, and Forman Williams for helpful discussions regarding chemical kinetics. NR 28 TC 21 Z9 22 U1 2 U2 39 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 1540-7489 J9 P COMBUST INST JI Proc. Combust. Inst. PY 2013 VL 34 BP 2009 EP 2016 DI 10.1016/j.proci.2012.05.045 PN 2 PG 8 WC Thermodynamics; Energy & Fuels; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA 065ES UT WOS:000313131800014 ER PT J AU Staton, SJR Castillo, JA Taylor, TJ Herckes, P Hayes, MA AF Staton, Sarah J. R. Castillo, Josemar A. Taylor, Thomas J. Herckes, Pierre Hayes, Mark A. TI Identifying indoor environmental patterns from bioaerosol material using HPLC SO ANALYTICAL AND BIOANALYTICAL CHEMISTRY LA English DT Article; Proceedings Paper CT 4th EuCheMS Chemistry Congress (4ECC) CY AUG 26-30, 2012 CL Prague, CZECH REPUBLIC DE Bioaerosols; Environmental monitoring; Environmental pattern recognition; HPLC; Separation ID PARTICULATE MATTER; PROTEINS; KERATIN; MASS; ATMOSPHERE AB A substantial portion of the atmospheric particle budget is of biological origin (human and animal dander, plant and insect debris, etc.). These bioaerosols can be considered information-rich packets of biochemical data specific to the organism of origin. In this study, bioaerosol samples from various indoor environments were analyzed to create identifiable patterns attributable to a source level of occupation. Air samples were collected from environments representative of human high-traffic- and low-traffic indoor spaces along with direct human skin sampling. In all settings, total suspended particulate matter was collected and the total aerosol protein concentration ranged from 0.03 to 1.2 mu g/m(3). High performance liquid chromatography was chosen as a standard analysis technique for the examination of aqueous aerosol extracts to distinguish signatures of occupation compared to environmental background. The results of this study suggest that bioaerosol "fingerprinting" is possible with the two test environments being distinguishable at a 97 % confidence interval. C1 [Staton, Sarah J. R.; Castillo, Josemar A.; Herckes, Pierre; Hayes, Mark A.] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85281 USA. [Staton, Sarah J. R.] USN, Res Lab, Washington, DC USA. [Taylor, Thomas J.] Arizona State Univ, Dept Math & Stat Sci, Tempe, AZ 85281 USA. RP Hayes, MA (reprint author), Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85281 USA. EM MHayes@asu.edu RI Herckes, Pierre/E-6824-2011 OI Herckes, Pierre/0000-0002-0205-3187 FU Department of State Fulbright Fellowship; Department of Education Foreign Language and Area Studies Fellowship (FLAS); NIH [1R03AI094193-01, 1R03AI099740-01, R21EB010191-01A1] FX Special thanks for the assistance of Dr. Jim Anderson for providing the air samplers. This research was financially supported in part through the Department of State Fulbright Fellowship and the Department of Education Foreign Language and Area Studies Fellowship (FLAS) as well as NIH grants 1R03AI094193-01, 1R03AI099740-01, and R21EB010191-01A1. NR 25 TC 3 Z9 3 U1 1 U2 28 PU SPRINGER HEIDELBERG PI HEIDELBERG PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY SN 1618-2642 EI 1618-2650 J9 ANAL BIOANAL CHEM JI Anal. Bioanal. Chem. PD JAN PY 2013 VL 405 IS 1 BP 351 EP 357 DI 10.1007/s00216-012-6495-4 PG 7 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 064HG UT WOS:000313064000035 PM 23092966 ER PT J AU Flagg, SY Regis, DP Petersen, K Mahon, RT AF Flagg, Seth Y. Regis, David P. Petersen, Kyle Mahon, Richard T. TI Interrupted Oxygen Pre-Breathing and Decompression Outcomes in Swine SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article DE decompression illness; disabled submarine; non-recompressive therapy; pre-oxygenation ID SICKNESS; SATURATION; SUBMARINE; ESCAPE; MODEL; RISK AB FLAGG SY, REGIS DP, PETERSEN K, MAHON RT. Interrupted oxygen prebreathing and decompression outcomes in swine. Aviat Space Environ Med 2013; 84:12-6. Background: Rescue from a disabled submarine may result in substantial risk for severe decompression sickness (DCS) among survivors. Oxygen prebreathe (OPB) before rapid decompression has been shown to significantly reduce risk or delay onset for severe DCS in animals. However, the duration of this benefit remains unknown and might even be lost if a delay between the prebreathe period to initiation of recompression therapy allows for nitrogen reaccumulation. Methods: We hypothesized that the benefit of OPB would be lost following subsequent periods of air interruption in a 70-kg swine saturation model. Following OPB of 45 or 60 min with varying periods (30, 45, 60 min) of air interruption, 61 swine exposed to 2.7 ATA for 22 h were rapidly decompressed. Swine without OPB served as negative controls and swine treated with 45 min of OPB without air interruption served as positive controls. Results: Comparing experimental groups for Type II DCS incidence showed OPB120/60 being the only experimental group (11%) statistically different than the negative control group OPB0 (80%). Log rank tests comparing Type II DCS free survival only showed statistically significant differences for OPB45/60 compared to positive control group OPB45, while, more importantly, demonstrating a significant difference for OPB120/60 compared to that approximated for OPB45, indicating a significant reversal of the air interruption effects with longer OPB on Type II DCS disease free survival. Discussion: Based on these findings we concluded that the protective effects of OPB against severe DCS are reduced with increasing periods of air interruption. C1 [Flagg, Seth Y.] Ft Belvoir Community Hosp, Ft Belvoir, VA USA. [Regis, David P.; Mahon, Richard T.] USN, Med Res Ctr, Undersea Med Dept, Silver Spring, MD USA. [Petersen, Kyle] USN, Med Res Unit 6, Washington, DC USA. RP Flagg, SY (reprint author), Care of Temple D, USN, Med Res Ctr, Undersea Med Dept, 503 Grant Ave, Silver Spring, MD 20910 USA. EM diana.temple@med.navy.mil FU NAVSEA Work Unit [603713N.A0903] FX The views expressed in this article are those of the authors and do not necessarily reflect the official policy or position of the Department of the Navy, Department of Defense, nor the U.S. Government. There are no financial or other relationships that could be viewed as causing bias or conflict of interest for any of the authors. This work was funded by NAVSEA Work Unit Number 603713N.A0903. NR 16 TC 0 Z9 0 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 USA SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JAN PY 2013 VL 84 IS 1 BP 12 EP 16 DI 10.3357/ASEM.3282.2013 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA 062LN UT WOS:000312921400003 PM 23304993 ER PT J AU Orsello, CA Phillips, AS Rice, GM AF Orsello, Christopher A. Phillips, Andrea S. Rice, George M. TI Height and In-Flight Low Back Pain Association Among Military Helicopter Pilots SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article DE lumbar spine; low back pain; helicopter; predictors; military ID INTRADISCAL PRESSURE; INTERVERTEBRAL DISC; AIRCRAFT TYPE; AVIATORS; SYMPTOMS; MRI AB ORSELLO CA, PHILLIPS AS, RICE GM. Height and in-flight low back pain association among military helicopter pilots. Aviat Space Environ Med 2013; 84:32-7. Introduction: Low back pain (LBP) among helicopter pilots is a well-recognized problem, with prevalence ranging from 61 to over 80%. Studies indicate association with total flight hour (TFH) exposure and lack of association with height or body mass index (BMI); however, those that have excluded pilots with back injuries unrelated to flying are limited. Methods: Surveyed regarding LBP were 1028 U.S. Navy helicopter pilots. Of the 648 (63%) respondents, 83 pilots, or 12.9%, who reported nonflying related back injuries and those without necessary data were excluded, yielding N = 554. Case-control analysis was performed with logistic regression for height, BMI, and TFH on significant LBP (defined as >30% of each flight) presence versus absence with Chi-square on the median split of each and ANOVA to include airframes. Results: Height was a positive predictor for significant LBP among all subjects (OR: 1.7), with the strongest association among male pilots (OR: 2.1). BMI, THF, and airframe (H-60, TH-57, H-53, and H-46) were not associated. Discussion: These results imply that ergonomic stressors that adversely impact lumbar symmetry may be a predominant factor in LBP during flight. Significant prevalence rates may persist in the absence of design enhancements that mitigate these stressors. Height was a significant predictor for in-flight LBP among U.S. Navy helicopter pilots studied and BMI, TFHs, and airframe were not. For every 1 '' increase among male pilot height values, the odds of experiencing significant LBP in flight increased by 9.3%, with those equal/taller than median (71 in.) having over twice the odds compared with those shorter. Keywords: lumbar spine, low back pain, helicopter, predictors, military. C1 [Orsello, Christopher A.] USN, Aerosp Med Inst, Pensacola, FL 32508 USA. USN, Postgrad Sch, Monterey, CA USA. RP Orsello, CA (reprint author), USN, Aerosp Med Inst, 340 Hulse Rd,Code 33, Pensacola, FL 32508 USA. EM christopher.orsello@med.navy.mil NR 30 TC 8 Z9 9 U1 7 U2 14 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 USA SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JAN PY 2013 VL 84 IS 1 BP 32 EP 37 DI 10.3357/ASEM.3425.2013 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA 062LN UT WOS:000312921400007 PM 23304997 ER PT J AU Guerard, F Lee, YS Tripier, R Szajek, LP Deschamps, JR Brechbiel, MW AF Guerard, Francois Lee, Yong-Sok Tripier, Raphael Szajek, Lawrence P. Deschamps, Jeffrey R. Brechbiel, Martin W. TI Investigation of Zr(IV) and Zr-89(IV) complexation with hydroxamates: progress towards designing a better chelator than desferrioxamine B for immuno-PET imaging SO CHEMICAL COMMUNICATIONS LA English DT Article ID POSITRON-EMISSION-TOMOGRAPHY; MONOCLONAL-ANTIBODIES; CHEMISTRY; ACID; ZIRCONIUM(IV); IRON(III); CANCER AB Single crystal X-ray diffraction shows that Zr(IV) forms an octa-coordinated complex with 4 bidentate hydroxamates whose solution structures were investigated by utilizing density functional theory at the level of B3LYP/DGDZVP. Stability constants obtained by potentiometry were in accordance with the tendency observed when radiolabeling with Zr-89. C1 [Guerard, Francois; Brechbiel, Martin W.] NCI, Radioimmune & Inorgan Chem Sect, Radiat Oncol Branch, NIH, Bethesda, MD 20892 USA. [Lee, Yong-Sok] NIH, Ctr Mol Modeling, Div Computat Biosci, Ctr Informat Technol, Bethesda, MD 20892 USA. [Tripier, Raphael] Univ Brest, CNRS, UMR 6521, Lab Chim Electrochim Mol & Chim Analyt, F-29200 Brest, France. [Szajek, Lawrence P.] NIH, Positron Emiss Tomog Dept, Warren Grant Magnuson Clin Ctr, Bethesda, MD 20892 USA. [Deschamps, Jeffrey R.] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. RP Brechbiel, MW (reprint author), NCI, Radioimmune & Inorgan Chem Sect, Radiat Oncol Branch, NIH, Bethesda, MD 20892 USA. EM martinwb@mail.nih.gov OI Deschamps, Jeffrey/0000-0001-5845-0010; Guerard, Francois/0000-0001-9795-2785 FU Intramural Research Program of the NIH; National Cancer Institute; Center for Cancer Research; Center for Information Technology; NIDA [Y1-DA1101]; Naval Research Laboratory (NRL) [Y1-DA1101] FX This work was supported by the Intramural Research Program of the NIH, National Cancer Institute, Center for Cancer Research and the Center for Information Technology. The quantum chemical study utilized PC/LINUX clusters at the Center for Molecular Modeling of the NIH (http://cit.nih.gov). X-ray crystallographic studies were supported by NIDA through Interagency Agreement #Y1-DA1101 with the Naval Research Laboratory (NRL). NR 18 TC 37 Z9 37 U1 4 U2 53 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1359-7345 J9 CHEM COMMUN JI Chem. Commun. PY 2013 VL 49 IS 10 BP 1002 EP 1004 DI 10.1039/c2cc37549d PG 3 WC Chemistry, Multidisciplinary SC Chemistry GA 064FW UT WOS:000313059300015 PM 23250287 ER PT J AU Zhang, JF Jex, E Feng, TW Sivko, GS Baillie, LW Goldman, S Van Kampen, KR Tang, DCC AF Zhang, Jianfeng Jex, Edward Feng, Tsungwei Sivko, Gloria S. Baillie, Leslie W. Goldman, Stanley Van Kampen, Kent R. Tang, De-chu C. TI An Adenovirus-Vectored Nasal Vaccine Confers Rapid and Sustained Protection against Anthrax in a Single-Dose Regimen SO CLINICAL AND VACCINE IMMUNOLOGY LA English DT Article ID TOXIN LETHAL FACTOR; BACILLUS-ANTHRACIS; IMMUNE-RESPONSE; INFLUENZA VACCINES; VIRUS-INFECTION; IMMUNIZATION; MUCOSAL; CELLS; CHALLENGE; POTENT AB Bacillus anthracis is the causative agent of anthrax, and its spores have been developed into lethal bioweapons. To mitigate an onslaught from airborne anthrax spores that are maliciously disseminated, it is of paramount importance to develop a rapid-response anthrax vaccine that can be mass administered by nonmedical personnel during a crisis. We report here that intranasal instillation of a nonreplicating adenovirus vector encoding B. anthracis protective antigen could confer rapid and sustained protection against inhalation anthrax in mice in a single-dose regimen in the presence of preexisting adenovirus immunity. The potency of the vaccine was greatly enhanced when codons of the antigen gene were optimized to match the tRNA pool found in human cells. In addition, an adenovirus vector encoding lethal factor can confer partial protection against inhalation anthrax and might be coadministered with a protective antigen-based vaccine. C1 [Zhang, Jianfeng; Jex, Edward; Feng, Tsungwei; Van Kampen, Kent R.; Tang, De-chu C.] Vaxin Inc, Gaithersburg, MD USA. [Sivko, Gloria S.] Battelle Biomed Res Ctr, W Jefferson, OH USA. [Baillie, Leslie W.; Goldman, Stanley] USN, Med Res Ctr, Biol Def Res Directorate, Rockville, MD USA. RP Zhang, JF (reprint author), Vaxin Inc, Gaithersburg, MD USA. EM zhang@vaxin.com OI Baillie, Les/0000-0002-8186-223X FU National Institutes of Health [1-UC1-AI067198-01] FX This study was supported in part by the National Institutes of Health (1-UC1-AI067198-01). NR 45 TC 9 Z9 11 U1 1 U2 21 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 1556-6811 J9 CLIN VACCINE IMMUNOL JI Clin. Vaccine Immunol. PD JAN PY 2013 VL 20 IS 1 BP 1 EP 8 DI 10.1128/CVI.00280-12 PG 8 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA 064HI UT WOS:000313064400001 PM 23100479 ER PT J AU Jimmy, DH Sundufu, AJ Malanoski, AP Jacobsen, KH Ansumana, R Leski, TA Bangura, U Bockarie, AS Tejan, E Lin, BC Stenger, DA AF Jimmy, David H. Sundufu, Abu J. Malanoski, Anthony P. Jacobsen, Kathryn H. Ansumana, Rashid Leski, Tomasz A. Bangura, Umaru Bockarie, Alfred S. Tejan, Edries Lin, Baochuan Stenger, David A. TI Water quality associated public health risk in Bo, Sierra Leone SO ENVIRONMENTAL MONITORING AND ASSESSMENT LA English DT Article DE Groundwater; Water resources; Waterborne diseases; Microbiology; Physicochemistry; Sierra Leone ID ESCHERICHIA-COLI O157-H7; DRINKING-WATER; MICROBIOLOGICAL CONTAMINATION; PHYSICOCHEMICAL ANALYSIS; RURAL COMMUNITIES; FECAL POLLUTION; FRESH-WATER; GROUNDWATER; NIGERIA; GHANA AB Human health depends on reliable access to safe drinking water, but in many developing countries only a limited number of wells and boreholes are available. Many of these water resources are contaminated with biological or chemical pollutants. The goal of this study was to examine water access and quality in urban Bo, Sierra Leone. A health census and community mapping project in one neighborhood in Bo identified the 36 water sources used by the community. A water sample was taken from each water source and tested for a variety of microbiological and physicochemical substances. Only 38.9% of the water sources met World Health Organization (WHO) microbial safety requirements based on fecal coliform levels. Physiochemical analysis indicated that the majority (91.7%) of the water sources met the requirements set by the WHO. In combination, 25% of these water resources met safe drinking water criteria. No variables associated with wells were statistically significant predictors of contamination. This study indicated that fecal contamination is the greatest health risk associated with drinking water. There is a need to raise hygiene awareness and implement inexpensive methods to reduce fecal contamination and improve drinking water safety in Bo, Sierra Leone. C1 [Malanoski, Anthony P.; Leski, Tomasz A.; Lin, Baochuan; Stenger, David A.] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. [Jimmy, David H.; Sundufu, Abu J.; Ansumana, Rashid; Bockarie, Alfred S.] Njala Univ, Bo, Sierra Leone. [Jimmy, David H.; Ansumana, Rashid; Bangura, Umaru; Bockarie, Alfred S.] Mercy Hosp Res Lab, Kulanda Town, Bo, Sierra Leone. [Jacobsen, Kathryn H.] George Mason Univ, Dept Global & Community Hlth, Fairfax, VA 22030 USA. [Tejan, Edries] Mercy Hosp, Kulanda Town, Bo, Sierra Leone. RP Lin, BC (reprint author), USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. EM baochuan.lin@nrl.navy.mil RI Jacobsen, Kathryn/B-5857-2008; Leski, Tomasz/K-6916-2013; Lin, Baochuan/A-8390-2009; Malanoski, Anthony/C-7814-2011 OI Jacobsen, Kathryn/0000-0002-4198-6246; Leski, Tomasz/0000-0001-7688-9887; Lin, Baochuan/0000-0002-9484-0785; Malanoski, Anthony/0000-0001-6192-888X FU Office of Naval Research; Office of the Under Secretary of Defense for Acquisition, Technology, and Logistics FX The funding for this project is provided by the Office of Naval Research and the Office of the Under Secretary of Defense for Acquisition, Technology, and Logistics. We thank Dr. Robert A. Rubins at Whittier College (Whittier, CA) for providing guidance in statistical analysis. We also thank Ms. Anne Kusterbeck and Dr. Jinny Liu for critical review of this manuscript. The opinions and assertions contained herein are those of the authors and none are to be construed as those of the US Department of Defense, US Department of the Navy, any other military service, or Government Agency at large. NR 41 TC 4 Z9 4 U1 3 U2 51 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0167-6369 J9 ENVIRON MONIT ASSESS JI Environ. Monit. Assess. PD JAN PY 2013 VL 185 IS 1 BP 241 EP 251 DI 10.1007/s10661-012-2548-6 PG 11 WC Environmental Sciences SC Environmental Sciences & Ecology GA 061GB UT WOS:000312835300021 PM 22350346 ER PT J AU Turner, SE Ambrico, JM AF Turner, Stephen E. Ambrico, Joseph M. TI Underwater Implosion of Cylindrical Metal Tubes SO JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME LA English DT Article DE implosion; fluid-structure-interaction; collapse ID PIPELINES; DYNAMICS; BUBBLE; WATER AB The basic physics of the underwater implosion of metal tubes is studied using small scale experiments and finite element simulations. A series of underwater implosion experiments have been conducted with thin-wall aluminum alloy 6061-T6 tubes. The nominal tube dimensions are 2.54 cm outside diameter and 30.48 cm length. Two cylinders collapsed at their natural buckling pressure of 6895 kPa gauge pressure (1000 psig). Two additional cylinders were caused to implode at 6205 kPa gauge pressure (900 psig) using an initiator mechanism. Each of the four cylinders failed with a mode 2 shape (collapsed shape is flat with two lobes). The near field pressure time-history in the water is measured at a radial distance of 10.16 cm (4in.) from the centerline at three points along the cylinder's length. The pressure time-histories show very similar behavior between the cylinders which buckled naturally and those which were mechanically initiated at 90% of the buckling pressure. To aid in understanding the physical implosion phenomena, a computational model is developed with a fluid-structure-interaction finite element code (DYSMAS). This model is validated against the experimental data, and it is used to explain the features of the implosion pressure pulse and how it is physically created. [DOI: 10.1115/1.4006944] C1 [Turner, Stephen E.; Ambrico, Joseph M.] USN, Undersea Warfare Ctr, Newport, RI 02841 USA. RP Turner, SE (reprint author), USN, Undersea Warfare Ctr, 1176 Howell St,Bldg 990,Code 4121, Newport, RI 02841 USA. EM Stephen.e.turner1@navy.mil; Joseph.ambrico@navy.mil FU Office of Naval Research; Naval Undersea Warfare Center, Division Newport FX The authors would like to acknowledge support for this research from the Office of Naval Research and from the Naval Undersea Warfare Center, Division Newport. NR 17 TC 14 Z9 14 U1 2 U2 18 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA SN 0021-8936 J9 J APPL MECH-T ASME JI J. Appl. Mech.-Trans. ASME PD JAN PY 2013 VL 80 IS 1 AR 011013 DI 10.1115/1.4006944 PG 11 WC Mechanics SC Mechanics GA 063VF UT WOS:000313029400013 ER PT J AU Huang, L Lambrakos, SG Shabaev, A Bernstein, N Jacobs, V Massa, L AF Huang, L. Lambrakos, S. G. Shabaev, A. Bernstein, N. Jacobs, V. Massa, L. TI Dielectric Response at THz Frequencies of Water Complexes of beta-HMX Calculated by Density Functional Theory SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE LA English DT Article DE advanced characterization; material selection; modeling processes ID GAUSSIAN-BASIS SETS; TERAHERTZ SPECTROSCOPY; EXPLOSIVES; SPECTRUM AB The need for better detection of explosive devices has imposed a necessity for determining the dielectric response properties of energetic materials with respect to electromagnetic wave excitation. Among the range of different frequencies for electromagnetic excitation, the THz frequency range is of particular interest because of its nondestructive nature. The present study is based on significant progress in density functional theory (DFT), and associated software technology, which is sufficiently mature for the determination of dielectric response functions, and actually provides complementary information to that obtained from experiment. This point is further demonstrated in this study by calculations of ground state resonance structure associated with water complexes of the high explosive beta-HMX using DFT, which is for the construction of parameterized dielectric response functions for excitation by electromagnetic waves at frequencies within the THz range. These dielectric functions provide for different types of analyses concerning the dielectric response of explosives. In particular, these dielectric response functions provide quantitative initial estimates of spectral response features for subsequent adjustment with respect to additional information such as laboratory measurements and other types of theory based calculations. With respect to qualitative analysis, these spectra provide for the molecular level interpretation of response structure. The DFT software GAUSSIAN was used for the calculations of ground state resonance structure presented here. C1 [Huang, L.; Lambrakos, S. G.; Bernstein, N.; Jacobs, V.] USN, Res Lab, Washington, DC 20375 USA. [Shabaev, A.] George Mason Univ, Fairfax, VA 22030 USA. [Massa, L.] CUNY Hunter Coll, New York, NY 10065 USA. RP Huang, L (reprint author), USN, Res Lab, Washington, DC 20375 USA. EM lambrakos@anvil.nrl.navy.mil FU Office of Naval Research FX This study was supported by the Office of Naval Research. NR 28 TC 0 Z9 0 U1 0 U2 25 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1059-9495 EI 1544-1024 J9 J MATER ENG PERFORM JI J. Mater. Eng. Perform. PD JAN PY 2013 VL 22 IS 1 BP 17 EP 29 DI 10.1007/s11665-012-0240-1 PG 13 WC Materials Science, Multidisciplinary SC Materials Science GA 059NT UT WOS:000312712900003 ER PT J AU Odom, JL Krolik, JL Rogers, JS AF Odom, Jonathan L. Krolik, Jeffrey L. Rogers, Jeffrey S. TI Maximum-likelihood spatial spectrum estimation in dynamic environments with a short maneuverable array SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID PASSIVE SYNTHETIC-APERTURE; TOWED-ARRAY; EM ALGORITHM; PERFORMANCE; SEARCH; LOCALIZATION; TRACK; NOISE AB This work concerns the development of field directionality mapping algorithms for short acoustic arrays on mobile maneuverable platforms that avoid the left/right ambiguities and endfire resolution degradation common to longer non-maneuverable line arrays. In this paper, it is shown that short maneuverable arrays can achieve a high fraction of usable bearing space for target detection in interference-dominated scenarios, despite their lower array gain against diffuse background noise. Two narrowband techniques are presented which use the expectation-maximization maximum likelihood algorithm under different models of the time-varying field directionality. The first, derivative based maximum likelihood, uses a deterministic model while the second, recursive Bayes maximum likelihood, uses a stochastic model for the time-varying spatial spectrum. In addition, a broadband extension is introduced that incorporates temporal spectral knowledge to suppress ambiguities when the average sensor array spacing is greater than a half-wavelength. Dynamic multi-source simulations demonstrate the ability of a short, maneuvering array to reduce array ambiguities and spatial grating lobes in an interference dominated environment. Monte Carlo evaluation of receiver operating characteristics is used to evaluate the improvement in source detection achieved by the proposed methods versus conventional broadband beamforming. (C) 2013 Acoustical Society of America. [http://dx. doi.org/10.1121/1.4770233] C1 [Odom, Jonathan L.; Krolik, Jeffrey L.] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA. [Rogers, Jeffrey S.] USN, Res Lab, Acoust Div, Washington, DC 20375 USA. RP Odom, JL (reprint author), Duke Univ, Dept Elect & Comp Engn, POB 90291, Durham, NC 27708 USA. EM jonathan.odom@duke.edu FU ONR [N000140810947] FX This work was supported by ONR under Grant No. N000140810947. NR 27 TC 2 Z9 2 U1 2 U2 6 PU ACOUSTICAL SOC AMER AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JAN PY 2013 VL 133 IS 1 BP 311 EP 322 DI 10.1121/1.4770233 PG 12 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA 063XF UT WOS:000313034700040 PM 23297904 ER PT J AU DiCecco, J Gaudette, JE Simmons, JA AF DiCecco, John Gaudette, Jason E. Simmons, James A. TI Multi-component separation and analysis of bat echolocation calls SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID FRACTIONAL FOURIER-TRANSFORM; EMPIRICAL MODE DECOMPOSITION; POLYNOMIAL-PHASE TRANSFORM; TIME-FREQUENCY; INSTANTANEOUS FREQUENCY; AMBIGUITY FUNCTION; EPTESICUS-FUSCUS; SIGNALS; REPRESENTATIONS; WIGNER AB The vast majority of animal vocalizations contain multiple frequency modulated (FM) components with varying amounts of non-linear modulation and harmonic instability. This is especially true of biosonar sounds where precise time-frequency templates are essential for neural information processing of echoes. Understanding the dynamic waveform design by bats and other echolocating animals may help to improve the efficacy of man-made sonar through biomimetic design. Bats are known to adapt their call structure based on the echolocation task, proximity to nearby objects, and density of acoustic clutter. To interpret the significance of these changes, a method was developed for component separation and analysis of biosonar waveforms. Techniques for imaging in the time-frequency plane are typically limited due to the uncertainty principle and interference cross terms. This problem is addressed by extending the use of the fractional Fourier transform to isolate each non-linear component for separate analysis. Once separated, empirical mode decomposition can be used to further examine each component. The Hilbert transform may then successfully extract detailed time-frequency information from each isolated component. This multi-component analysis method is applied to the sonar signals of four species of bats recorded in-flight by radiotelemetry along with a comparison of other common time-frequency representations. [http://dx.doi.org/10.1121/1.4768877] C1 [DiCecco, John; Gaudette, Jason E.] USN, Undersea Warfare Ctr, Newport, RI 02841 USA. [Simmons, James A.] Brown Univ, Dept Neurosci, Providence, RI 02912 USA. [Gaudette, Jason E.] Brown Univ, Ctr Biomed Engn, Providence, RI 02912 USA. RP Gaudette, JE (reprint author), USN, Undersea Warfare Ctr, 1176 Howell St, Newport, RI 02841 USA. EM jason.e.gaudette@navy.mil FU Naval Undersea Warfare Center, Division Newport, RI; ONR [N00014-09-1-0691] FX This work was funded through internal investments by the Naval Undersea Warfare Center, Division Newport, RI and ONR Grant No. N00014-09-1-0691. The authors wish to thank Hiroshi Riquimaroux and Shizuko Hiryu for providing time series data from recordings using the Telemike recording system, Ivars Kirsteins and Lee Estes for discussions on the FrFT, and Laura Kloepper and Andrea Simmons for editorial suggestions. Figures showing the WVD, smoothed pseudoWVD, and reassignment method for comparison were produced using the Time-Frequency Toolbox for MATLAB. NR 46 TC 5 Z9 5 U1 3 U2 76 PU ACOUSTICAL SOC AMER AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JAN PY 2013 VL 133 IS 1 BP 538 EP 546 DI 10.1121/1.4768877 PG 9 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA 063XF UT WOS:000313034700061 PM 23297925 ER PT J AU Casey, K Hernandez-Boussard, T Mell, MW Lee, JT AF Casey, Kevin Hernandez-Boussard, Tina Mell, Matthew W. Lee, Jason T. TI Differences in readmissions after open repair versus endovascular aneurysm repair SO JOURNAL OF VASCULAR SURGERY LA English DT Article; Proceedings Paper CT 26th Annual Meeting of the Western-Vascular-Society CY SEP 17-20, 2011 CL Kauai, HI SP Western Vasc Soc ID ABDOMINAL-AORTIC-ANEURYSM; RANDOMIZED CONTROLLED-TRIAL; EXPERIENCE; MORTALITY; SURGERY AB Objective: Reintervention rates after repair of abdominal aortic aneurysm (AAA) are higher for endovascular repair (EVAR) than for open repair, mostly due to treatment for endoleaks, whereas open surgical operations for bowel obstruction and abdominal hernias are higher after open repair. However, readmission rates after EVAR or open repair for nonoperative conditions and complications that do not require an intervention are not well documented. We sought to determine reasons for all-cause readmissions within the first year after open repair and EVAR. Methods: Patients who underwent elective AAA repair in California during a 6-year period were identified from the Health Care and Utilization Project State Inpatient Database. All patients who had a readmission in California <= 1 year of their index procedure were included for evaluation. Readmission rates and primary and secondary diagnoses associated with each readmission were analyzed and recorded. Results: From 2003 to 2008, there were 15,736 operations for elective AAA repair, comprising 9356 EVARs (60%) and 6380 open repairs (40%). At 1 year postoperatively, the readmission rate was 52.1% after open repair and 55.4% after EVAR (P = .0003). The three most common principle diagnoses associated with readmission after any type of AAA repair were failure to thrive, cardiac issues, and infection. When stratified by repair type, patients who underwent open repair were more likely to be readmitted with primary diagnoses associated with failure to thrive, cardiac complications, and infection compared with EVAR (all P < .001). Those who underwent EVAR were more likely, however, to be readmitted with primary diagnoses of device-related complications (P = .05), cardiac complications, and infection. Conclusions: Total readmission rates within 1 year after elective AAA repair are greater after EVAR than after open repair. Reasons for readmission vary between the two cohorts but are related to the magnitude of open surgery after open repair, device issues after EVAR, and the usual cardiac and infectious complications after either intervention. Systems-based analysis of these causes of readmission can potentially improve patient expectations and care after elective aneurysm repair. (J Vasc Surg 2013;57:89-95.) C1 [Hernandez-Boussard, Tina; Mell, Matthew W.; Lee, Jason T.] Stanford Univ, Med Ctr, Div Vasc Surg, Stanford, CA 94305 USA. [Casey, Kevin] USN, San Diego Med Ctr, Div Vasc Surg, San Diego, CA 92152 USA. RP Lee, JT (reprint author), Stanford Univ, Med Ctr, Div Vasc Surg, 300 Pasteur Dr,Ste H3600, Stanford, CA 94305 USA. EM jtlee@stanford.edu FU AHRQ HHS [K01 HS018558] NR 18 TC 16 Z9 16 U1 0 U2 7 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 JAN PY 2013 VL 57 IS 1 BP 89 EP 95 DI 10.1016/j.jvs.2012.07.005 PG 7 WC Surgery; Peripheral Vascular Disease SC Surgery; Cardiovascular System & Cardiology GA 061FN UT WOS:000312833800016 PM 23164606 ER PT J AU Juarez, D Long, KC Aguilar, P Kochel, TJ Halsey, ES AF Juarez, Diana Long, Kanya C. Aguilar, Patricia Kochel, Tadeusz J. Halsey, Eric S. TI Assessment of plaque assay methods for alphaviruses SO JOURNAL OF VIROLOGICAL METHODS LA English DT Article DE Alphavirus; Plaque assay; Agarose; Carboxymethylcellulose ID VENEZUELAN-EQUINE-ENCEPHALITIS; REDUCTION NEUTRALIZATION; MAYARO-VIRUS; PERU; DENGUE; TRANSMISSION; REGION; AGAR AB Viruses from the Alphavirus genus are responsible for numerous arboviral diseases impacting human health throughout the world. Confirmation of acute alphavirus infection is based on viral isolation, identification of viral RNA, or a fourfold or greater increase in antibody titers between acute and convalescent samples. In convalescence, the specificity of antibodies to an alphavirus may be confirmed by plaque reduction neutralization test. To identify the best method for alphavirus and neutralizing antibody recognition, the standard solid method using a cell monolayer overlay with 0.4% agarose and the semisolid method using a cell suspension overlay with 0.6% carboxymethyl cellulose (CMC) overlay were evaluated. Mayaro virus, Una virus, Venezuelan equine encephalitis virus (VEEV), and Western equine encephalitis virus (WEEV) were selected to be tested by both methods. The results indicate that the solid method showed consistently greater sensitivity than the semisolid method. Also, a "semisolid-variant method" using a 0.6% CMC overlay on a cell monolayer was assayed for virus titration. This method provided the same sensitivity as the solid method for VEEV and also had greater sensitivity for WEEV titration. Modifications in plaque assay conditions affect significantly results and therefore evaluation of the performance of each new assay is needed. Published by Elsevier B.V. C1 [Juarez, Diana; Long, Kanya C.; Halsey, Eric S.] USN, Med Res Unit 6, Lima, Peru. [Long, Kanya C.] Univ Calif Davis, Davis, CA 95616 USA. [Aguilar, Patricia] Univ Texas Med Branch, Dept Pathol, Galveston, TX USA. [Kochel, Tadeusz J.] USN, Med Res Ctr, Silver Spring, MD USA. RP Juarez, D (reprint author), USN, Med Res Unit 6, Amer Embassy 3230,Lima Pl, Washington, DC 20521 USA. EM diana.juarez@med.navy.mil RI Valle, Ruben/A-7512-2013 FU United States Department of Defense Global Emerging Infections Systems Research Program [847705.82000.25GB.B0016] FX This study was partially funded by the United States Department of Defense Global Emerging Infections Systems Research Program. WORK UNIT NUMBER: 847705.82000.25GB.B0016. NR 21 TC 2 Z9 2 U1 1 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-0934 J9 J VIROL METHODS JI J. Virol. Methods PD JAN PY 2013 VL 187 IS 1 BP 185 EP 189 DI 10.1016/j.jviromet.2012.09.026 PG 5 WC Biochemical Research Methods; Biotechnology & Applied Microbiology; Virology SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Virology GA 058BR UT WOS:000312609600031 PM 23085307 ER PT J AU Macera, CA Aralis, HJ Rauh, MJ MacGregor, AJ AF Macera, Caroline A. Aralis, Hilary J. Rauh, Mitchell J. MacGregor, Andrew J. TI Do Sleep Problems Mediate the Relationship between Traumatic Brain Injury and Development of Mental Health Symptoms after Deployment? SO SLEEP LA English DT Article DE Posttraumatic stress disorder; sleep problems; traumatic brain injury ID POSTTRAUMATIC-STRESS-DISORDER; CONFIRMATORY FACTOR-ANALYSIS; IRAQ WAR; DISTURBANCE; INSOMNIA; COMBAT; DIMENSIONALITY; AFGHANISTAN; DEPRESSION; VETERANS AB Study Objectives: Military members screening positive for blast-related traumatic brain injury (TBI) may subsequently screen positive for posttraumatic stress disorder (PTSD) or depression. The role of sleep as a mediating factor in the development of mental health symptoms was explored. Design: Prospective study with symptoms evaluated at two time points. Setting: Postdeployment service in Iraq, Afghanistan, or Kuwait during 2008 and 2009. Participants: There were 29,640 US Navy and Marine Corps men (29,019 who did not screen positive for PTSD at baseline, 27,702 who did not screen positive for depression at baseline, and 27,320 who did not screen positive at baseline for either condition). Measurements and Results: After controlling for sleep problems, the adjusted odds of receiving a positive PTSD screening at follow-up decreased from 1.61 (95% confidence interval [CI] 1.21-2.14) to 1.32 (95% CI 0.99-1.77) for a subject screening positive for TBI relative to a subject screening negative, suggesting that sleep problems mediated 26% of TBI's effect on development of PTSD. Likewise, after controlling for sleep problems, the adjusted odds of receiving a positive depression screening decreased from 1.41 (95% CI 1.11-1.80) to 1.15 (95% CI 0.90-1.47), suggesting that sleep problems mediated 41% of TBI's effect on development of depression. Results were similar for those with either PTSD or depression (37% mediated). Conclusions: These results suggest that sleep problems mediate the effect of a positive TBI screening on the development of mental health disorders, and sleep problems may be an early indicator of risk for PTSD or depression. C1 [Macera, Caroline A.] USN, Dept Warfighter Performance, Hlth Res Ctr, DHAPP, San Diego, CA 92106 USA. RP Macera, CA (reprint author), USN, Dept Warfighter Performance, Hlth Res Ctr, DHAPP, 140 Sylvester Rd, San Diego, CA 92106 USA. EM carol.macera@med.navy.mil FU U.S. Navy Bureau of Medicine and Surgery [60818] FX This work was supported by the U.S. Navy Bureau of Medicine and Surgery under Work Unit No. 60818. The views expressed are those of the authors and do not reflect the official policy or position of the Department of the Navy, Department of Defense, or the US Government. Approved for public release; distribution is unlimited. This research was conducted in compliance with all applicable federal regulations governing the protection of human subjects (protocol NHRC. 2009.0020). NR 33 TC 26 Z9 26 U1 1 U2 11 PU AMER ACAD SLEEP MEDICINE PI WESTCHESTER PA ONE WESTBROOK CORPORATE CTR, STE 920, WESTCHESTER, IL 60154 USA SN 0161-8105 J9 SLEEP JI Sleep PD JAN 1 PY 2013 VL 36 IS 1 BP 83 EP 90 DI 10.5665/sleep.2306 PG 8 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA 063LT UT WOS:000313001200013 PM 23288974 ER PT J AU Buckhout-White, S Robinson, JT Bassim, ND Goldman, ER Medintz, IL Ancona, MG AF Buckhout-White, Susan Robinson, Jeremy T. Bassim, Nabil D. Goldman, Ellen R. Medintz, Igor L. Ancona, Mario G. TI TEM imaging of unstained DNA nanostructures using suspended graphene SO SOFT MATTER LA English DT Article ID ELECTRON-MICROSCOPY; NUCLEIC-ACIDS; LARGE-AREA; FILMS; COMPLEXES; ARRAYS; VAPOR AB We demonstrate a method for imaging unstained DNA nanostructures with transmission electron microscopy via suspended graphene supports. Central to the technique is a sacrificial silicon membrane beneath the graphene that provides mechanical support during aqueous sample deposition but is then eliminated in a final step using a XeF2 dry etch. C1 [Buckhout-White, Susan] George Mason Univ, Manassas, VA 20110 USA. [Buckhout-White, Susan; Goldman, Ellen R.; Medintz, Igor L.] USN, Ctr Bio Mol Sci & Engn, Res Lab, Washington, DC 20375 USA. [Robinson, Jeremy T.; Ancona, Mario G.] USN, Elect Sci & Technol Div, Res Lab, Washington, DC 20375 USA. [Bassim, Nabil D.] USN, Mat Sci & Technol Div, Res Lab, Washington, DC 20375 USA. RP Buckhout-White, S (reprint author), George Mason Univ, 10910 Univ Blvd,MS 4E3, Manassas, VA 20110 USA. EM susan.buckhout-white.ctr@nrl.navy.mil; mario.ancona@nrl.navy.mil RI Robinson, Jeremy/F-2748-2010 FU Maryland NanoCenter; NispLab; NSF as a MRSEC Shared Experimental Facility; ONR; NRL; NRL-NSI FX The authors would like to acknowledge the support of the Maryland NanoCenter and its NispLab. The NispLab is supported in part by the NSF as a MRSEC Shared Experimental Facility. We also acknowledge the financial support of ONR, NRL and NRL-NSI. NR 27 TC 6 Z9 6 U1 1 U2 67 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2013 VL 9 IS 5 BP 1414 EP 1417 DI 10.1039/c2sm26950c PG 4 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 062TK UT WOS:000312945200002 ER PT J AU Hanafi, HA El-Din, EMN El-Hossary, SSI Kaldas, RM Villinski, JT Furman, BD Fryauff, DJ AF Hanafi, Hanafi A. El-Din, El-Shaimaa M. Nour El-Hossary, Shabaan S. I. Kaldas, Rania M. Villinski, Jeffrey T. Furman, Barry D. Fryauff, David J. TI Experimental acquisition, development, and transmission of Leishmania tropica by Phlebotomus duboscqi SO ACTA TROPICA LA English DT Article DE Phlebotomus duboscqi; Leishmania tropica; Transmission; Vector competency ID ANTHROPONOTIC CUTANEOUS LEISHMANIASIS; SAND FLIES; EXPERIMENTAL-INFECTION; LUTZOMYIA-LONGIPALPIS; VECTOR; PSYCHODIDAE; DIPTERA; KENYA; PARASITE; SANDFLIES AB We report experimental infection and transmission of Leishmania tropica (Wright), by the blood-feeding sand fly Phlebotomus duboscqi (Neveu-Lemaire). Groups of laboratory-reared female sand flies that fed "naturally" on L tropica-infected hamsters, or artificially, via membrane feeding device, on a suspension of L tropica amastigotes, were dissected at progressive time points post-feeding. Acquisition, retention and development of L tropica through procyclic, nectomonad, and leptomonad stages to the infective metacyclic promastigote stage, and anterior progression of the parasites from abdominal midgut blood-meal to the thoracic midgut were demonstrated in both groups. Membrane feeding on the concentrated amastigote suspension led to metacyclic promastigote infections in 60% of sand flies, whereas only 3% of P. duboscqi that fed naturally on an infected hamster developed metacyclics. Sand flies from both groups re-fed on naive hamsters, but despite infections in 25-50% of membrane-fed and 2-3.5% of naturally fed flies, no skin lesions developed in the hamsters. After four months of observation these animals were euthanized and necropsied. Screening of the organs and tissue by polymerase cinain reaction (PCR) that targeted the small subunit RNA gene, amplified generic Leishmania DNA from liver, spleen, bone marrow, and blood, but only from hamsters bitten by membrane-infected P. duboscqi. These results are notable in demonstrating the ability of P. duboscqi, originating from Kenya, to acquire, retain, develop, and transmit a Turkish strain of L tropica originally isolated from a human case of cutaneous leishmaniasis. This marks the first demonstration of complete development and transmission of L tropica by a member of the Phlebotomus subgenus of sand flies. Published by Elsevier B.V. C1 [Hanafi, Hanafi A.; El-Din, El-Shaimaa M. Nour; El-Hossary, Shabaan S. I.; Kaldas, Rania M.; Villinski, Jeffrey T.; Furman, Barry D.; Fryauff, David J.] USN, Med Res Unit 3, Cairo, Egypt. RP Fryauff, DJ (reprint author), USN, Med Res Ctr, Walter Reed Army Inst Res, Mil Malaria Vaccine Program,Inst Review Board, 503 Robert Grant Ave, Silver Spring, MD 20910 USA. EM david.fryauff@med.navy.mil FU NMRDC, Bethesda, MD [00101.BUX.3408] FX The experiments reported herein were conducted in compliance with the Animal Welfare Act and in accordance with the principles set forth in the "Guide for the Care and Use of Laboratory Animals", Institute of Laboratory Animal Resources, National Research Council, National Academy Press, 1996. The research protocol and methods employed in this work were reviewed and approved by a duly constituted Institutional Animal Care and Use Committee (IACUC), NAMRU-3 Animal Use Protocol No. 08-01. All animals used in this work were cared for and maintained under conditions approved by the Association for Assessment and Accreditation of Laboratory Animal Care (AAALAC). This work was supported by NMRDC, Bethesda, MD, Work Unit Number 00101.BUX.3408. NR 55 TC 2 Z9 2 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0001-706X J9 ACTA TROP JI Acta Trop. PD JAN PY 2013 VL 125 IS 1 BP 37 EP 42 DI 10.1016/j.actatropica.2012.09.001 PG 6 WC Parasitology; Tropical Medicine SC Parasitology; Tropical Medicine GA 055LG UT WOS:000312417200005 PM 22975149 ER PT J AU Gentry, SE Massie, AB Lentine, KL Axelrod, DA Segev, DL AF Gentry, Sommer E. Massie, Allan B. Lentine, Krista L. Axelrod, David A. Segev, Dorry L. TI Addressing Geographic Disparities in Liver Allocation Using Mathematical Redistricting SO AMERICAN JOURNAL OF TRANSPLANTATION LA English DT Meeting Abstract CT 13th Annual State of the Art Winter Symposium of the American-Society-of-Transplant-Surgeons (ASTS) Held in Conjunction with the NATCO Symposium for Advanced Transplant Professionals CY JAN 31-FEB 03, 2013 CL Miami, FL SP Amer Soc Transplant Surg (ASTS), NATCO C1 [Massie, Allan B.; Segev, Dorry L.] Johns Hopkins Univ, Sch Med, Dept Surg, Baltimore, MD 21205 USA. [Gentry, Sommer E.] USN Acad, Annapolis, MD 21402 USA. [Axelrod, David A.] Dartmouth Hitchcock Med Ctr, Dept Surg, Hanover, NH USA. [Lentine, Krista L.] St Louis Univ, Sch Med, Div Nephrol, St Louis, MO USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1600-6135 J9 AM J TRANSPLANT JI Am. J. Transplant. PD JAN PY 2013 VL 13 SU 2 SI SI BP 66 EP 67 PG 2 WC Surgery; Transplantation SC Surgery; Transplantation GA 057CT UT WOS:000312540200033 ER PT J AU Gentry, SE Chow, EKH Wickliffe, CE Massie, AB Leighton, T Snyder, JJ Israni, AK Kasiske, BL Segev, DL AF Gentry, Sommer E. Chow, Eric K. H. Wickliffe, Corey E. Massie, Allan B. Leighton, Tabitha Snyder, Jon J. Israni, Ajay K. Kasiske, Bert L. Segev, Dorry L. TI Distance, Transport Time, and Cold Ischemia Time in Liver Transplantation SO AMERICAN JOURNAL OF TRANSPLANTATION LA English DT Meeting Abstract CT 13th Annual State of the Art Winter Symposium of the American-Society-of-Transplant-Surgeons (ASTS) Held in Conjunction with the NATCO Symposium for Advanced Transplant Professionals CY JAN 31-FEB 03, 2013 CL Miami, FL SP Amer Soc Transplant Surg (ASTS), NATCO C1 [Chow, Eric K. H.; Wickliffe, Corey E.; Massie, Allan B.; Segev, Dorry L.] Johns Hopkins Univ, Sch Med, Dept Surg, Baltimore, MD 21205 USA. [Snyder, Jon J.; Israni, Ajay K.; Kasiske, Bert L.] Univ Minnesota, Sch Publ Hlth, Minneapolis, MN USA. [Gentry, Sommer E.] USN Acad, Annapolis, MD 21402 USA. [Leighton, Tabitha] Sci Registry Transplant Recipients, Minneapolis, MN USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1600-6135 J9 AM J TRANSPLANT JI Am. J. Transplant. PD JAN PY 2013 VL 13 SU 2 SI SI BP 85 EP 85 PG 1 WC Surgery; Transplantation SC Surgery; Transplantation GA 057CT UT WOS:000312540200096 ER PT J AU Phillips, CJ Woolpert, T Sevick, C Faix, D Blair, PJ Crum-Cianflone, NF AF Phillips, Christopher J. Woolpert, Tabitha Sevick, Carter Faix, Dennis Blair, Patrick J. Crum-Cianflone, Nancy F. TI Comparison of the Effectiveness of Trivalent Inactivated Influenza Vaccine and Live, Attenuated Influenza Vaccine in Preventing Influenza-Like Illness Among US Military Service Members, 2006-2009 SO CLINICAL INFECTIOUS DISEASES LA English DT Article DE pneumonia; influenza-like illness; trivalent inactivated influenza vaccine; attenuated influenza vaccine; military ID UNITED-STATES; YOUNG-CHILDREN; A H1N1; SEASONAL INFLUENZA; RELATIVE EFFICACY; VIRUS VACCINE; IMPACT; ADULTS; WORLDWIDE; PERSONNEL AB Background. Influenza is a significant cause of morbidity, and vaccination is the preferred preventive strategy. Data regarding the preferred influenza vaccine type among adults are limited. Methods. The effectiveness of 2 currently available influenza vaccines LAIV and TIV in preventing influenza-like illness (ILI) was compared among US military members (aged 18-49 years) during 3 consecutive influenza seasons (2006-2009). ILI, influenza, and pneumonia events post-vaccination were compared between vaccine types using Cox proportional hazard models adjusted for sociodemographic factors, occupation, and geographic area. Results. A total of 41 670 vaccination events were evaluated, including 28 929 during 2 "well-matched" seasons (2006-2007 and 2008-2009: LAIV n = 22 734, TIV n = 6195) and 12 741 during a suboptimally matched season due to mild antigenic drift (2007-2008: LAIV n = 9447, TIV n = 3294). ILI crude incidence rates for LAIV and TIV were 139 and 127 cases per 1000 person-seasons for the well-matched seasons, respectively, and 150 and 165 cases per 1000 person-seasons for the suboptimally matched season, respectively. In the multivariable models, there were no differences in ILI events by vaccine type (well-matched seasons: hazard ratio [HR], 0.97; 95% confidence interval [CI], .90-1.06; suboptimally matched season: HR, 1.00; 95% CI, .90-1.11). There were also no differences in influenza and/or pneumonia events by vaccine group. Conclusions. Between 2006 and 2009, TIV and LAIV had similar effectiveness in preventing ILI and influenza/pneumonia events among healthy adults. C1 [Crum-Cianflone, Nancy F.] USN, Hlth Res Ctr, Dept Deployment Hlth Res, San Diego, CA 92152 USA. [Woolpert, Tabitha; Faix, Dennis; Blair, Patrick J.] USN, Hlth Res Ctr, Dept Operat Infect Dis, San Diego, CA 92152 USA. RP Crum-Cianflone, NF (reprint author), USN, Hlth Res Ctr, Dept Deployment Hlth Res, 160 Sylvester Rd, San Diego, CA 92152 USA. EM nancy.crum@med.navy.mil RI Valle, Ruben/A-7512-2013 FU US Military Vaccine (MILVAX) Agency FX This work was supported by the US Military Vaccine (MILVAX) Agency. The views expressed in this article are those of the authors and do not reflect the official policy or position of the US Department of the Navy, US Department of Defense, or the US government. Approved for public release, distribution is unlimited. This research has been conducted in compliance with all applicable federal regulations governing the protection of human subjects in research (protocol NHRC.2010.0027). NR 31 TC 9 Z9 9 U1 0 U2 21 PU OXFORD UNIV PRESS INC PI CARY PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD JAN 1 PY 2013 VL 56 IS 1 BP 11 EP 19 DI 10.1093/cid/cis860 PG 9 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA 058AE UT WOS:000312605500006 PM 23183869 ER PT J AU Larabee, MD AF Larabee, Mark D. TI Poetry of the First World War 1914-1918: A Critical Evaluation SO ENGLISH LITERATURE IN TRANSITION 1880-1920 LA English DT Book Review C1 [Larabee, Mark D.] USN Acad, Annapolis, MD USA. RP Larabee, MD (reprint author), USN Acad, Annapolis, MD USA. NR 1 TC 0 Z9 0 U1 0 U2 4 PU ENGLISH LITERATURE TRANSITION PI GREENSBORO PA UNIV NORTH CAROLINA DEPT ENGLISH, GREENSBORO, NC 27412-5001 USA SN 0013-8339 J9 ENGL LIT TRANSITION JI Engl. Lit. Transit. PY 2013 VL 56 IS 1 BP 125 EP 128 PG 4 WC Literature, British Isles SC Literature GA 055JZ UT WOS:000312413500012 ER PT J AU Masterson, JH Jourdain, VJ Collard, DA Choe, CH Christman, MS L'Esperance, JO Auge, BK AF Masterson, James H. Jourdain, Victor J. Collard, Daniel A. Choe, Chong H. Christman, Matthew S. L'Esperance, James O. Auge, Brian K. TI Changes in Urine Parameters After Desert Exposure: Assessment of Stone Risk in United States Marines Transiently Exposed to a Desert Environment SO JOURNAL OF UROLOGY LA English DT Article DE urolithiasis; desert climate; military personnel ID SUNLIGHT AB Purpose: Living in a desert environment has been associated with a higher incidence of kidney stone formation, likely because of concentrated urine output, higher production of vitamin D and genetic predisposition. We determined the changes in urinary parameters after a group of United States Marines temporarily transitioned from a temperate environment to a desert environment. Materials and Methods: A total of 50 Marines completed a questionnaire and performed 3, 24-hour urine collections before mobilization to the desert, after 30 days in the desert and 2 weeks after returning from the desert. Results: Daily urine output decreased 68% to 0.52 L despite marked increased fluid intake (17 L per day). Total daily urinary excretion of calcium, uric acid, sodium, magnesium and potassium in the desert decreased by 70%, 41%, 53%, 22% and 36%, respectively. Urinary pH decreased from 6.1 to 5.6 while in the desert, and citrate and oxalate had minimal changes. After their return from the desert, apart from a decrease of 22% in oxalate, there were no statistically significant differences from baseline. While in the desert, relative supersaturation risks of uric acid and sodium urate were increased 153% and 56%, respectively. Brushite relative supersaturation decreased 24%. After their return there was no statistical difference from baseline. Conclusions: Our findings suggest that the kidneys preserved water and electrolytes while the Marines were subjected to the desert environment. Despite this conservation, relative saturations indicate increased risk of stones in healthy men exposed to a desert environment with rapid resolution upon return. C1 [Masterson, James H.; Collard, Daniel A.; Choe, Chong H.; L'Esperance, James O.] USN, Dept Urol, San Diego Med Ctr, San Diego, CA 92124 USA. [Christman, Matthew S.] Childrens Hosp Philadelphia, Div Urol, Philadelphia, PA 19104 USA. [Auge, Brian K.] St Lukes Mt States Urol, Boise, ID USA. RP Masterson, JH (reprint author), USN, Dept Urol, Med Ctr, 34800 Bob Wilson Dr, San Diego, CA 92124 USA. EM James.masterson@med.navy.mil NR 15 TC 3 Z9 3 U1 1 U2 9 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0022-5347 J9 J UROLOGY JI J. Urol. PD JAN PY 2013 VL 189 IS 1 BP 165 EP 170 DI 10.1016/j.juro.2012.08.097 PG 6 WC Urology & Nephrology SC Urology & Nephrology GA 057ZZ UT WOS:000312604800056 PM 23174258 ER PT J AU Mungan, CE Lipscombe, TC AF Mungan, Carl E. Lipscombe, Trevor C. TI Complementary curves of descent SO EUROPEAN JOURNAL OF PHYSICS LA English DT Article AB The shapes of two wires in a vertical plane with the same starting and ending points are described as complementary curves of descent if beads frictionlessly slide down both of them in the same time, starting from rest. Every analytic curve has a unique complement, except for a cycloid (solution of the brachistochrone problem), which is self complementary. A striking example is a straight wire whose complement is a lemniscate of Bernoulli. Alternatively, the wires can be tracks down which round objects undergo a rolling race. The level of presentation is appropriate for an intermediate undergraduate course in classical mechanics. C1 [Mungan, Carl E.] USN Acad, Dept Phys, Annapolis, MD 21402 USA. [Lipscombe, Trevor C.] Catholic Univ Amer Press, Washington, DC 20064 USA. RP Mungan, CE (reprint author), USN Acad, Dept Phys, Annapolis, MD 21402 USA. EM mungan@usna.edu; lipscombe@cua.edu NR 9 TC 2 Z9 2 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0143-0807 J9 EUR J PHYS JI Eur. J. Phys. PD JAN PY 2013 VL 34 IS 1 BP 59 EP 65 DI 10.1088/0143-0807/34/1/59 PG 7 WC Education, Scientific Disciplines; Physics, Multidisciplinary SC Education & Educational Research; Physics GA 053ED UT WOS:000312252500015 ER PT J AU Smith, LN Elad, M AF Smith, Leslie N. Elad, Michael TI Improving Dictionary Learning: Multiple Dictionary Updates and Coefficient Reuse SO IEEE SIGNAL PROCESSING LETTERS LA English DT Article DE Dictionary-learning; K-SVD; MOD; sparse and redundant representations ID SPARSE; REPRESENTATIONS; ALGORITHM AB In this letter, we propose two improvements of the MOD and K-SVD dictionary learning algorithms, by modifying the two main parts of these algorithms-the dictionary update and the sparse coding stages. Our first contribution is a different dictionary-update stage that aims at finding both the dictionary and the representations while keeping the supports intact. The second contribution suggests to leverage the known representations from the previous sparse-coding in the quest for the updated representations. We demonstrate these two ideas in practice and show how they lead to faster training and better quality outcome. C1 [Smith, Leslie N.] USN, Res Lab, Opt Sci Div, Washington, DC 20375 USA. [Elad, Michael] Technion Israel Inst Technol, Dept Comp Sci, IL-32000 Haifa, Israel. RP Smith, LN (reprint author), USN, Res Lab, Opt Sci Div, Washington, DC 20375 USA. EM Leslie.Smith@nrl.navy.mil; elad@cs.technion.ac.il FU ERC [320649]; U.S. Naval Research Laboratory FX This work was supported by the ERC Advanced Grant Agreement 320649 and by the U.S. Naval Research Laboratory. The associate editor coordinating the review of this manuscript and approving it for publication was Prof. Anna Scaglione. NR 15 TC 45 Z9 51 U1 2 U2 23 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1070-9908 J9 IEEE SIGNAL PROC LET JI IEEE Signal Process. Lett. PD JAN PY 2013 VL 20 IS 1 BP 79 EP 82 DI 10.1109/LSP.2012.2229976 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA 053IU UT WOS:000312265700001 ER PT J AU Russell, JC Smith, S Novales, W Lindsey, LLM Hanson, J AF Russell, Jessica C. Smith, Sandi Novales, Wilma Lindsey, Lisa L. Massi Hanson, Joseph TI Use of the Extended Parallel Processing Model to Evaluate Culturally Relevant Kernicterus Messages SO JOURNAL OF PEDIATRIC HEALTH CARE LA English DT Article DE Kernicterus; Extended Parallel Processing Model; formative message research ID NEONATAL HYPERBILIRUBINEMIA; FEAR APPEALS; MANAGEMENT; RISK; DESIGN; SYSTEM AB Introduction: Kernicterus is a serious but easily preventable disease in newborns that is not well-known even by some health care professionals. This study evaluated a parent guide and poster on kernicterus awareness and prevention generated by the Centers for Disease Control and Prevention. The Extended Parallel Processing Model was used as a framework for creating the interview protocol and analyzing the results. Method: In-depth interviews were conducted with four parents and six health care personnel of different ethnicities to evaluate the materials. Content for the parent guide and poster was held constant, but photos were varied according to the ethnicity of the baby (white, African American, or Hispanic) and the language in which the interviews were conducted (English and Spanish). Results: The parent guide was evaluated positively, but reactions to the poster were varied. The consensus was that the poster drew more attention than the pocket guide but lacked sufficient information about what jaundice is or how to treat it, while the pocket guide provided information, especially with regard to efficacy. The Extended Parallel Processing Model claims that when efficacy is equal to or higher than perceived threat, respondents should engage in recommended responses, which was the general finding from these interviews. Discussion: Recommendations for improvements of the materials are presented. The focus on different ethnicities in the materials was perceived as unnecessary and potentially counter-productive. Both parents and health care professionals mentioned the lack of information regarding treatment. Providing information on the length and effectiveness of treatment for jaundice and kernicterus might increase efficacy in averting the threat in both conditions. J Pediatr Health Care. (2013) 27, 33-40. C1 [Russell, Jessica C.] Michigan State Univ, Dept Commun, E Lansing, MI 48842 USA. [Smith, Sandi; Novales, Wilma] Michigan State Univ, Hlth & Risk Commun Ctr, E Lansing, MI 48842 USA. [Lindsey, Lisa L. Massi] USN, Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA USA. [Hanson, Joseph] Calif State Univ Sacramento, Sacramento, CA 95819 USA. RP Russell, JC (reprint author), Michigan State Univ, Dept Commun, E Lansing, MI 48842 USA. EM russe346@msu.edu FU Centers for Disease Control and Prevention FX Funding for this project was awarded to the Health and Risk Communication Center at Michigan State University by the Centers for Disease Control and Prevention. NR 23 TC 2 Z9 2 U1 0 U2 5 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0891-5245 J9 J PEDIATR HEALTH CAR JI J. Pediatr. Health Care PD JAN-FEB PY 2013 VL 27 IS 1 BP 33 EP 40 DI 10.1016/j.pedhc.2011.06.003 PG 8 WC Health Policy & Services; Nursing; Pediatrics SC Health Care Sciences & Services; Nursing; Pediatrics GA 051LB UT WOS:000312127100008 PM 23237614 ER PT J AU Pender, RJ Shiels, AB Bialic-Murphy, L Mosher, SM AF Pender, Richard J. Shiels, Aaron B. Bialic-Murphy, Lalasia Mosher, Stephen M. TI Large-scale rodent control reduces pre- and post-dispersal seed predation of the endangered Hawaiian lobeliad, Cyanea superba subsp superba (Campanulaceae) SO BIOLOGICAL INVASIONS LA English DT Article DE Alien invasive species; Captive-feeding trials; Frugivory; Mus musculus; Plant recruitment; Rattus rattus ID NORTHERN OFFSHORE ISLANDS; RATTUS-EXULANS PEALE; NEW-ZEALAND; INTRODUCED RODENTS; INVASIVE RATS; SMALL MAMMALS; DRY FOREST; ERADICATION; RECRUITMENT; DISPERSAL AB Large-scale rodent control can help to manage endangered species that are vulnerable to invasive rodent consumption. A 26 ha rodent snap-trap grid was installed in montane forest on Oahu Island, Hawaii, in order to protect endangered snails and plants. To assess the effectiveness of this trapping operation in reducing fruit consumption and seed predation of the endangered Hawaiian lobeliad, Cyanea superba subsp. superba, pre- and post-dispersal C. superba fruit consumption were monitored for 36 plants at the site with rodent control (Kahanahaiki) and 42 plants at an adjacent site without rodent control (Pahole). Over 47 % of all monitored fruit were eaten on the plants at Pahole compared to 4 % at Kahanahaiki. Images captured using motion-sensing cameras suggest that black rats (Rattus rattus) were the only pre-dispersal fruit consumers. To quantify post-dispersal fruit consumption, and to identify the culprit frugivore(s), mature fruit were placed in tracking tunnels positioned on the forest floor and checked daily. At Pahole, all of the fruit were consumed by rats compared to 29 % at Kahanahaiki. Lastly, to determine if rodents from the sites were predators or dispersers of C. superba seed, fruit were fed to captive black rats and house mice (Mus musculus). Black rats consumed entire fruit, killing all the seed, while mice did little damage to the fruit and seed. Therefore, large-scale rat trapping can directly benefit the reproduction of C. superba subsp. superba. Controlling black rats at restoration sites appears integral to the successful restoration of this endangered plant species. C1 [Pender, Richard J.; Bialic-Murphy, Lalasia; Mosher, Stephen M.] Univ Hawaii Manoa, Dept Bot, Pacific Cooperat Studies Unit, Honolulu, HI 96822 USA. [Shiels, Aaron B.] Natl Wildlife Res Ctr, USDA, APHIS, Hawaii Field Stn, Hilo, HI 96721 USA. [Bialic-Murphy, Lalasia; Mosher, Stephen M.] US Army Garrison, Oahu Army Nat Resources Program, Environm Div, Directorate Publ Works, Schofield Barracks, HI 96857 USA. [Mosher, Stephen M.] USN, Naval Facil Engn Command Marianas, Santa Rita, GU 96915 USA. RP Pender, RJ (reprint author), Univ Hawaii Manoa, Dept Bot, Pacific Cooperat Studies Unit, 3190 Maile Way, Honolulu, HI 96822 USA. EM pender@hawaii.edu FU Oahu Army Natural Resources Program (OANRP); Fulbright New Zealand; John R. Templin Scholarship FX We thank the Oahu Army Natural Resources Program (OANRP) for funding and logistical support of this project-we are especially grateful for the many staff members that helped with the intensive and on-going rodent trapping at Kahanahaiki. We thank both OANRP and the Pahole Natural Area Reserve managers (State of Hawaii) for land access, and Don Drake, Kapua Kawelo, Matthew Keir, Clifford Morden, Julia Rowe, Lauren Weisenberger, and two anonymous reviewers for their helpful comments on an earlier draft of this manuscript. RJP and ABS wish to thank the Pacific Cooperative Studies Unit and Clifford Morden for providing logistical support. RJP gratefully acknowledges the financial support provided by Fulbright New Zealand and the John R. Templin Scholarship. This research was approved by the University of Hawaii Animal Use and Care Committee. NR 45 TC 6 Z9 6 U1 11 U2 96 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1387-3547 J9 BIOL INVASIONS JI Biol. Invasions PD JAN PY 2013 VL 15 IS 1 BP 213 EP 223 DI 10.1007/s10530-012-0280-3 PG 11 WC Biodiversity Conservation; Ecology SC Biodiversity & Conservation; Environmental Sciences & Ecology GA 051PZ UT WOS:000312140800017 ER PT J AU Wentworth, BA Stein, MB Redwine, LS Xue, Y Taub, PR Clopton, P Nayak, KR Maisel, AS AF Wentworth, Bailey A. Stein, Murray B. Redwine, Laura S. Xue, Yang Taub, Pam R. Clopton, Paul Nayak, Keshav R. Maisel, Alan S. TI Post-Traumatic Stress Disorder A Fast Track to Premature Cardiovascular Disease? SO CARDIOLOGY IN REVIEW LA English DT Review DE post-traumatic stress disorder; cardiovascular disease; biomarkers; MR-proADM; copeptin ID PITUITARY-ADRENAL AXIS; CORONARY-HEART-DISEASE; MALE MILITARY VETERANS; C-REACTIVE PROTEIN; SALIVARY CORTISOL; WAR VETERANS; MYOCARDIAL-INFARCTION; LIPID CONCENTRATIONS; PLATELET REACTIVITY; ANXIETY DISORDERS AB An increasing body of evidence reported in the literature indicates a possible role for post-traumatic stress disorder (PTSD) as a cause for cardiovascular disease (CVD). However, mechanistic evidence on the progression of adverse cardiac outcomes in PTSD is lacking. In this review, we examine the potential paths by which CVD could occur in those with PTSD. Dysregulation of the hypothalamic-pituitary-adrenal axis and autonomic nervous dysfunction are commonly observed in PTSD, which in turn leads to a variety of physiological changes potentially damaging to the heart. Increased inflammation, dysfunction of the vascular endothelium, hypercoagulability, and cardiac hyperreactivity all have been noted in patients with PTSD. Altered neurochemistry, most notably increased arginine vasopressin, as well as an increased prevalence of the metabolic syndrome, may also contribute to adverse cardiac outcomes. Although the association between PTSD and physical disease is often complicated by health risk behaviors or comorbid psychiatric conditions, the evidence for a link between PTSD and CVD is substantial. In our examination, we attempt to identify potential cardiac biomarkers that may be useful in detecting increased cardiac risk in patients with PTSD. As research in this area is exceedingly limited, we hope to inspire further research, as there is great potential value in identifying prognostically useful cardiac biomarkers so as to predict and prevent the onset of CVD in patients with PTSD. C1 [Wentworth, Bailey A.; Stein, Murray B.; Redwine, Laura S.; Xue, Yang; Taub, Pam R.; Maisel, Alan S.] Univ Calif San Diego, Dept Psychiat & Behav Med, La Jolla, CA 92093 USA. [Xue, Yang; Taub, Pam R.; Clopton, Paul; Maisel, Alan S.] VA San Diego Healthcare Syst, Dept Cardiol, San Diego, CA USA. [Nayak, Keshav R.] Balboa Naval Hosp, San Diego, CA USA. RP Wentworth, BA (reprint author), Univ Calif San Diego, Dept Psychiat & Behav Med, 9500 Gilman Dr,MC 0804, La Jolla, CA 92093 USA. EM bwentwor@ucsd.edu OI Taub, Pam/0000-0002-0684-0655; Redwine, Laura/0000-0001-7633-2034 FU Alere; Abbott; Nanosphere; BG Diagnostics; Gilead FX Dr. Alan Maisel consults and has research activities with a number of biomarker companies, although there is no specific conflict with this manuscript. Consultant at Alere. Grants from Alere, Abbott, Nanosphere, BG Diagnostics, Gilead. Member of Advisory Board at EFG Inc., Critical Diagnostics. NR 97 TC 39 Z9 39 U1 9 U2 35 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 1061-5377 J9 CARDIOL REV JI Cardiol. Rev. PD JAN-FEB PY 2013 VL 21 IS 1 BP 16 EP 22 DI 10.1097/CRD.0b013e318265343b PG 7 WC Cardiac & Cardiovascular Systems SC Cardiovascular System & Cardiology GA 049TI UT WOS:000312005900003 PM 22717656 ER PT S AU Trautz, KM Jenkins, PP Walters, RJ Scheiman, D Hoheisel, R Tatavarti, R Chan, R Miyamoto, H Adams, JGJ Elarde, VC Grimsley, J AF Trautz, Kelly M. Jenkins, Phillip P. Walters, Robert J. Scheiman, David Hoheisel, Raymond Tatavarti, Rao Chan, Ray Miyamoto, Haruki Adams, Jessica G. J. Elarde, Victor C. Grimsley, James GP IEEE TI Mobile Solar Power SO 2012 IEEE 38TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC), VOL 2 SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 38th IEEE Photovoltaic Specialists Conference (PVSC) CY JUN 03-08, 2012 CL Austin, TX SP IEEE, IEEE Electron Devides Soc (EDS), IEEE Photon Soc, IEEE Power & Energy Soc (PES), HelioVolt Corp, SunShot, US Dept Energy DE Battery recharger; epitaxial lift off; solar cell; solar panel ID CELLS AB The military's need to reduce both fuel and battery resupply is a real-time requirement for increasing combat effectiveness and decreasing vulnerability. Mobile photovoltaics (PV) is a technology that can address these needs by leveraging emerging, flexible space PV technology. In this project, the development and production of a semirigid, lightweight, efficient solar blanket with the ability to mount on, or stow in, a backpack and recharge a high-capacity rechargeable lithium-ion battery was undertaken. The 19% efficient blanket consists of a 10 x 3 solar array of 20 cm(2) and single-junction epitaxial lift-off solar cells, which have an efficiency of similar to 22% under AM1.5G illumination. A power-conditioning module was also developed to interface the solar panel to the battery. Thirteen systems were outfitted during a Limited Objective Experiment-1 in February 2012, and based on the results, a second version of the system is in development. C1 [Trautz, Kelly M.; Jenkins, Phillip P.; Walters, Robert J.; Scheiman, David; Hoheisel, Raymond] US Naval Res Lab, Washington, DC 20375 USA. [Hoheisel, Raymond] George Washington Univ, Washington, DC 20375 USA. [Tatavarti, Rao; Chan, Ray; Miyamoto, Haruki; Adams, Jessica G. J.; Elarde, Victor C.] MicroLink Devices Inc, Niles, IL 60714 USA. [Grimsley, James] Digital Intelligence Inc LLC, Norman, OK 73019 USA. RP Trautz, KM (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM Kelly.Trautz@nrl.navy.mil; phillip.jenkins@nrl.navy.mil; robert.walters@nrl.navy.mil; david.scheiman@nrl.navy.mil; raymond.hoheisel.ctr.gm@nrl.navy.mil; rtatavarti@mldevices.com; rchan@mldevices.com; hmiyamoto@mldevices.com; jadams@mldevices.com; velarde@mldevices.com; grimsleyj@dii1.com NR 5 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 J9 IEEE PHOT SPEC CONF PY 2013 DI 10.1109/JPHOTOV.2012.2215580 PG 7 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BC7HM UT WOS:000354881800096 ER PT J AU Gaillardin, M Raine, M Duhamel, O Girard, S Paillet, P McMorrow, D Warner, JH Andrieu, F Barraud, S Faynot, O AF Gaillardin, M. Raine, M. Duhamel, O. Girard, S. Paillet, P. McMorrow, D. Warner, J. H. Andrieu, F. Barraud, S. Faynot, O. GP IEEE TI Impact of mechanical strain on the charge collection mechanisms of nanometer scaled SOI devices under heavy ion and pulsed laser irradiation SO 2013 14TH EUROPEAN CONFERENCE ON RADIATION AND ITS EFFECTS ON COMPONENTS AND SYSTEMS (RADECS) LA English DT Proceedings Paper CT 14th European Conference on Radiation and its Effects on Components and Systems (RADECS) CY SEP 23-27, 2013 CL Oxford, ENGLAND SP Synergy Hlth plc, RADECS Assoc, IEEE, Nucl & Plasma Sci Soc, AWE, Intersil, Peregrine Semicond DE Single-Event Effects (SEE); Single-Event Transient (SET); charge collection; heavy ion; pulsed laser; mechanical stress; strained silicon; SOI; Fully Depleted (FD) ID SIGE HBTS; TRANSIENTS; DEPENDENCE; MODE AB We investigate the impact of performance boosters using mechanical stress on the Single-Event Transient (SET) response of nanometer scaled Fully-Depleted Silicon-On-Insulator (SOI) devices. Heavy ion-induced charge collection mechanisms are analyzed through the measurement of fast transients on dedicated test structures processed either on standard relaxed or bi-axially tensile strained SOI substrates. C1 [Gaillardin, M.; Raine, M.; Duhamel, O.; Paillet, P.] CEA, DAM, DIF, F-91297 Arpajon, France. [Girard, S.] Univ St Etienne, UMR CNRS 5516, Lab H Curien, F-42000 St Etienne, France. [McMorrow, D.; Warner, J. H.] US Navy, Res Lab, Washington, DC 20375 USA. [Andrieu, F.; Barraud, S.; Faynot, O.] CEA, LETI Minatec, F-38000 Grenoble, France. RP Gaillardin, M (reprint author), CEA, DAM, DIF, F-91297 Arpajon, France. RI Andrieu, Francois/E-8773-2015 NR 22 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-5057-0 PY 2013 PG 7 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Engineering, Electrical & Electronic; Physics, Applied SC Computer Science; Engineering; Physics GA BC0JL UT WOS:000349119800056 ER PT J AU Kelly, AT Alles, ML Ball, DR Massengill, LW Ramaswamy, S Haddad, NF Brown, RD Fleming, PR Chan, E Ekanayake, V Kelly, CW Pelosi, C McMorrow, D Buchner, SP Warner, JH Berg, MD AF Kelly, Andrew T. Alles, Michael L. Ball, Dennis R. Massengill, Lloyd W. Ramaswamy, S. Haddad, Nadim F. Brown, Ronald D. Fleming, Patrick R. Chan, Ernesto Ekanayake, Virantha Kelly, Clinton W. Pelosi, Christopher McMorrow, Dale Buchner, Steven P. Warner, Jeffery H. Berg, Melanie D. GP IEEE TI Mitigation of Single-Event Charge Sharing in a Commercial FPGA Architecture SO 2013 14TH EUROPEAN CONFERENCE ON RADIATION AND ITS EFFECTS ON COMPONENTS AND SYSTEMS (RADECS) LA English DT Proceedings Paper CT 14th European Conference on Radiation and its Effects on Components and Systems (RADECS) CY SEP 23-27, 2013 CL Oxford, ENGLAND SP Synergy Hlth plc, RADECS Assoc, IEEE, Nucl & Plasma Sci Soc, AWE, Intersil, Peregrine Semicond DE Single event effects; charge sharing; radiation hardening by design; RHFGPA ID NM CMOS TECHNOLOGY; 2-PHOTON ABSORPTION; POTENTIAL MODULATION; WELL CONTACTS; THROUGH-WAFER; LASER; COLLECTION AB The motivation for single event effects (SEE) analysis and mitigation as part of the process for adaptation of a commercial Field Programmable Gate Array (FPGA) architecture for space-qualified applications is discussed. The interdependent roles of heavy-ion and laser-induced upset evaluation coupled with computer-aided investigations of SEE mechanisms and mitigation techniques in this process are shown to enable a significant reduction in SEE sensitivity of the device, while achieving minimal impact on remanufacturing steps. C1 [Kelly, Andrew T.; Ramaswamy, S.; Haddad, Nadim F.; Brown, Ronald D.; Fleming, Patrick R.; Chan, Ernesto] BAE Syst, Manassas, VA 22201 USA. [Alles, Michael L.; Ball, Dennis R.; Massengill, Lloyd W.] Vanderbilt Univ, Inst Space & Defense Elect, Nashville, TN 37203 USA. [Ekanayake, Virantha; Kelly, Clinton W.; Pelosi, Christopher] Achronix Semicond Corp, Santa Clara, CA 95054 USA. [McMorrow, Dale; Buchner, Steven P.; Warner, Jeffery H.] US Navy, Res Lab, Washington, DC 20375 USA. [Berg, Melanie D.] MEI Technol, Greenbelt, MD 20771 USA. RP Kelly, AT (reprint author), BAE Syst, Manassas, VA 22201 USA. EM andrew.kelly1@baesystems.com; mike.alles@vanderbilt.edu; mcmorrow@ccs.nrl.navy.mil; melanie.d.berg@nasa.gov NR 16 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-5057-0 PY 2013 PG 8 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Engineering, Electrical & Electronic; Physics, Applied SC Computer Science; Engineering; Physics GA BC0JL UT WOS:000349119800057 ER PT J AU Warner, JH McMorrow, DP Buchner, S Boos, JB Bennett, BR Cress, CD Champlain, JG Roche, N Paillet, P Gaillardin, M AF Warner, Jeffrey H. McMorrow, Dale P. Buchner, Stephen Boos, J. Brad Bennett, Brian R. Cress, Cory D. Champlain, James G. Roche, Nicolas Paillet, Philippe Gaillardin, Marc GP IEEE TI Ion-Induced Charge-Collection Transients in p-channel AlGaSb/InGaSb Field-Effect Transistors SO 2013 14TH EUROPEAN CONFERENCE ON RADIATION AND ITS EFFECTS ON COMPONENTS AND SYSTEMS (RADECS) LA English DT Proceedings Paper CT 14th European Conference on Radiation and its Effects on Components and Systems (RADECS) CY SEP 23-27, 2013 CL Oxford, ENGLAND SP Synergy Hlth plc, RADECS Assoc, IEEE, Nucl & Plasma Sci Soc, AWE, Intersil, Peregrine Semicond DE Single Event Transients; InAs; GaAs; AlGaSb; InGaSb; FET; HEMT; HFET; MESFET; heavy ions; protons; charge collection; SET cross section; charge enhancement; electron trapping; quantum well; Schottky barrier gate ID ELECTRON-MOBILITY TRANSISTORS; HEMTS; PERFORMANCE AB The first ion-induced, time-resolved charge-collection measurements for p-channel AlGaSb/InGaSb field-effect transistors are reported. The transient response reveals two distinct decay regions; a fast initial decay (< 1 ns) followed by a slower decay (> 10 ns). The slow decay is associated with charge enhancement processes, which are explained by electron trapping and de-trapping via deep-level traps located in the AlGaSb barrier material. Charge enhancement effects are reported for different drain and gate bias conditions, and it is found that charge-enhancement effects are suppressed when the gate bias is increased toward depletion. The effects of the bias on the transient response are presented and discussed. C1 [Warner, Jeffrey H.; McMorrow, Dale P.; Buchner, Stephen; Boos, J. Brad; Bennett, Brian R.; Cress, Cory D.; Champlain, James G.; Roche, Nicolas] Naval Res Lab, Washington, DC 20375 USA. [Paillet, Philippe; Gaillardin, Marc] CEA, DAM, DIF, F-91297 Arpajon, France. RP Warner, JH (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM Single-event-effects@nrl.navy.mil FU Office of Naval Research; Defense Threat Reduction Agency FX This work was supported by the Office of Naval Research and the Defense Threat Reduction Agency 6.1 basic research program. NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-5057-0 PY 2013 PG 7 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Engineering, Electrical & Electronic; Physics, Applied SC Computer Science; Engineering; Physics GA BC0JL UT WOS:000349119800001 ER PT S AU Kim, M Han, DK Ko, H AF Kim, Minjae Han, David K. Ko, Hanseok GP IEEE TI MULTIMODAL IMAGE FUSION VIA SPARSE REPRESENTATION WITH LOCAL PATCH DICTIONARIES SO 2013 20TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP 2013) SE IEEE International Conference on Image Processing ICIP LA English DT Proceedings Paper CT 20th IEEE International Conference on Image Processing (ICIP) CY SEP 15-18, 2013 CL Melbourne, AUSTRALIA SP Inst Elect & Elect Engineers, IEEE Signal Proc Soc DE Sparse representation; Image fusion; Dictionary learning; K-SVD; Non-local means denoising ID LEARNED DICTIONARIES; RECOGNITION; ALGORITHMS; PURSUIT; VISION AB Sparse representation is a promising technique for the field of image processing and pattern recognition. It generally exploits over-complete dictionaries which is fixed and known in advance, or learned using training algorithm such as K-SVD. In this paper, we propose a new multimodal image fusion approach based on the sparsity model with local patch dictionaries generated directly from input images. For every location in the image, dictionary is simply constructed with neighboring patches. Experimental results show that the proposed method is efficient and competitive with some existing image fusion methods. C1 [Kim, Minjae; Ko, Hanseok] Korea Univ, Sch Elect Engn, Seoul, South Korea. [Han, David K.] Off Naval Res, Arlington, VA 22217 USA. RP Kim, M (reprint author), Korea Univ, Sch Elect Engn, Seoul, South Korea. NR 29 TC 2 Z9 2 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1522-4880 BN 978-1-4799-2341-0 J9 IEEE IMAGE PROC PY 2013 BP 1301 EP 1305 PG 5 WC Imaging Science & Photographic Technology SC Imaging Science & Photographic Technology GA BC3FD UT WOS:000351597601083 ER PT S AU Fox, BJ Rock, BY Vernon, RJ AF Fox, Bryan J. Rock, B. Y. Vernon, Ronald J. GP IEEE TI Simulating a Traveling-Wave Resonator for High-Power ECRH Testing SO 2013 38TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) SE International Conference on Infrared Millimeter and Terahertz Waves LA English DT Proceedings Paper CT 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) CY SEP 01-06, 2013 CL Mainz, GERMANY SP Fraunhofer Inst Phys Measurement Tech IPM, Univ Kaiserslautern, IEEE Microwave Theory & Tech Soc, State Rhineland Palatinate, Minist Sci & Educ, OPTIMAS, Xiton Photon GmbH, Univ Kaiserslautern, Fac Phys, HUBNER, Edinburgh Instruments, Lake Shore, Anritsu Corp, Innovat Ctr Appl Syst Modeling, Optence, TRAS Inc, Advantest, Edmund Opt AB A traveling-wave resonator may have many times the power supplied by a microwave source, making it possible to test components at a much higher power than would otherwise be available. Here, the simulation results of a traveling-wave resonator are presented. C1 [Fox, Bryan J.; Vernon, Ronald J.] Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA. [Rock, B. Y.] Naval Res Lab, Div Plasma Phys, Naval Beam Phys Branch, Washington, DC 20375 USA. RP Fox, BJ (reprint author), Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA. 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 2162-2027 BN 978-1-4673-4717-4 J9 INT CONF INFRA MILLI PY 2013 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BB7OW UT WOS:000345855300297 ER PT S AU Yuan, Z Chen, CY Kumar, A Nainani, A Bennett, BR Boos, JB Saraswat, KC AF Yuan, Ze Chen, Chien-Yu Kumar, Archana Nainani, Aneesh Bennett, Brian R. Boos, J. Brad Saraswat, Krishna C. GP IEEE TI Effects of Oxidant Dosing on GaSb (100) prior to Atomic Layer Deposition and High-Performance Antimonide-based P-Channel MOSFETs with Ni-alloy S/D SO 2013 71ST ANNUAL DEVICE RESEARCH CONFERENCE (DRC) SE IEEE Device Research Conference Proceedings LA English DT Proceedings Paper CT 71st Device Research Conference (DRC) CY JUN 23-26, 2013 CL Univ Notre Dame, Notre Dame, IN SP IEEE Electron Devices Soc, IEEE HO Univ Notre Dame C1 [Yuan, Ze; Chen, Chien-Yu; Kumar, Archana; Saraswat, Krishna C.] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA. [Nainani, Aneesh] Appl Mat Inc, Santa Clara, CA 95054 USA. [Bennett, Brian R.; Boos, J. Brad] Naval Res Lab, Washington, DC 20375 USA. RP Yuan, Z (reprint author), Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA. EM zeyuan@stanford.edu RI Bennett, Brian/A-8850-2008 OI Bennett, Brian/0000-0002-2437-4213 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 1548-3770 BN 978-1-4799-0811-0; 978-1-4799-0812-7 J9 IEEE DEVICE RES CONF PY 2013 BP 25 EP + PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BB8TK UT WOS:000347466000022 ER PT S AU Feemster, MG AF Feemster, Matthew G. GP ASEE TI A Systematic Approach for Development and Simulation of Digital Control Algorithms using SIMULINK SO 2013 ASEE ANNUAL CONFERENCE SE ASEE Annual Conference & Exposition LA English DT Proceedings Paper CT ASEE Annual Conference CY JUN 23-26, 2013 CL Atlanta, GA SP ASEE AB In this paper, a methodology is presented to assist students in the development of a digital control algorithm. Specifically, the recent ability to embed functions within the SIMULINK environment of the software package MATLAB has facilitated the ability to simulate "C-like" digital control algorithms. The proposed methodology is presented through a laboratory exercise that develops a digital heading controller implemented within the Dynamic C environment for an autonomous ground vehicle. C1 [Feemster, Matthew G.] US Naval Acad, Annapolis, MD 21402 USA. RP Feemster, MG (reprint author), US Naval Acad, Annapolis, MD 21402 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC ENGINEERING EDUCATION PI WASHINGTON PA 1818 N STREET, NW SUITE 600, WASHINGTON, DC 20036 USA SN 2153-5965 J9 ASEE ANNU CONF EXPO PY 2013 PG 12 WC Education & Educational Research; Education, Scientific Disciplines; Engineering, Multidisciplinary SC Education & Educational Research; Engineering GA BE7HB UT WOS:000375256304019 ER PT S AU Burgers, AP Schaibley, JR McCracken, GA Steel, DG Bracker, AS Gammon, D Sham, LJ AF Burgers, A. P. Schaibley, J. R. McCracken, G. A. Steel, D. G. Bracker, A. S. Gammon, D. Sham, L. J. GP IEEE TI Direct Detection of Optical Rabi Oscillations from a Single Quantum Dot SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA AB We use coherent transient resonance fluorescence to follow the time evolution of Rabi oscillations in a semiconductor quantum dot. We obtain a lifetime limited decoherence rate. C1 [Burgers, A. P.; Schaibley, J. R.; McCracken, G. A.; Steel, D. G.] HM Randall Lab Phys, Ann Arbor, MI 48109 USA. [Bracker, A. S.; Gammon, D.] Naval Res Lab, Washington, DC 20375 USA. [Sham, L. J.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. RP Burgers, AP (reprint author), HM Randall Lab Phys, Ann Arbor, MI 48109 USA. EM dst@umich.edu; gammon@nrl.navy.mil; lsham@ucsd.edu NR 8 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262505027 ER PT S AU Cranch, GA Miller, GA Harrison, J Foster, S AF Cranch, G. A. Miller, G. A. Harrison, J. Foster, S. GP IEEE TI Characterization of the DFB fiber laser resonator strength and alpha-parameter by response to external feedback SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA ID BRAGG GRATINGS AB A method to characterize the linewidth enhancement factor or alpha-parameter of erbium doped fiber from measurements of the sensitivity to backreflection of DFB fiber lasers with a range of known resonator strengths is presented. C1 [Cranch, G. A.; Miller, G. A.] Naval Res Lab, Washington, DC 20375 USA. [Harrison, J.; Foster, S.] Def Sci & Technol Org, Edinburgh, SA 5111, Australia. RP Cranch, GA (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. 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 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262504038 ER PT S AU Elezzabi, AY Straatsma, C Johnson, M AF Elezzabi, A. Y. Straatsma, C. Johnson, Mark GP IEEE TI THz Spinplasmonic Spectroscopy of Surface Magnetization States at Magnetic/Non-Magnetic Metal Interfaces SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA AB We report novel, unusual effects in sub-lambda spinplasmonic media using THz-TDS. THz field shape, amplitude, hysteretic effects, and time delay are sensitive to surface magnetization states and ferromagnetic/non-ferromagnetic (F/N) metallic junctions. C1 [Elezzabi, A. Y.; Straatsma, C.] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB, Canada. [Johnson, Mark] Naval Res Lab, Washington, DC 20375 USA. RP Elezzabi, AY (reprint author), Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB, Canada. EM elezzabi@ece.ualberta.ca 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 SN 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262502050 ER PT S AU Elle, J Anaraki, S Penano, J Gordon, D Ting, A Sprangle, P Milchberg, H AF Elle, J. Anaraki, S. Penano, J. Gordon, D. Ting, A. Sprangle, P. Milchberg, H. GP IEEE TI Electron Density Measurements of Plasma Columns for N-2 Atmospheric Lasing SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA AB Line emission of N-2 and time-resolved electron density are measured in a several centimeter long plasma column. Peak density is 6*10(15) cm(-3) and emission from the second positive system of N-2 is observed. C1 [Elle, J.; Anaraki, S.; Sprangle, P.; Milchberg, H.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA. [Penano, J.; Gordon, D.; Ting, A.; Sprangle, P.] US Navy, Res Lab, Div Plasma Phys, Washington, DC 20375 USA. RP Elle, J (reprint author), Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA. EM elle1270@umd.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 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262504156 ER PT S AU Melinger, JS Yang, YH Mandeghar, M Grischkowsky, D AF Melinger, Joseph S. Yang, Yihong Mandeghar, Maboubeh Grischkowsky, D. GP IEEE TI Remote THz Monitoring of an Evolving Gas-Phase Mixture SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA ID TRANSMISSION AB We show how THz time-domain spectroscopy can be used for the remote detection of an evolving gas phase mixture containing D2O and HDO and to characterize the reaction kinetics of: H2O + D2O -> 2HDO. (C) 2013 Optical Society of America C1 [Melinger, Joseph S.] US Navy, Res Lab, Washington, DC 20375 USA. [Yang, Yihong; Mandeghar, Maboubeh; Grischkowsky, D.] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA. RP Melinger, JS (reprint author), US Navy, Res Lab, Code 6812, Washington, DC 20375 USA. EM joseph.melinger@nrl.navy.mil; daniel.grischkowsky@okstate.edu 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 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262502053 ER PT S AU Moody, G Singh, R Li, H Akimov, IA Bayer, M Reuter, D Wieck, AD Bracker, AS Gammon, D Cundiff, ST AF Moody, G. Singh, R. Li, H. Akimov, I. A. Bayer, M. Reuter, D. Wieck, A. D. Bracker, A. S. Gammon, D. Cundiff, S. T. GP IEEE TI Confinement Effects on Biexciton Binding in Semiconductor Quantum Dots Measured with 2D Coherent Spectroscopy SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA AB Two-dimensional coherent spectroscopy on a series of quantum dot samples with different morphology reveals that biexciton binding is independent of the details of confinement in InAs dots, in contrast to the behavior in GaAs dots. (C) 2013 Optical Society of America C1 [Moody, G.; Singh, R.; Li, H.; Cundiff, S. T.] Univ Colorado, JILA, Boulder, CO 80309 USA. [Moody, G.; Singh, R.; Li, H.; Cundiff, S. T.] NIST, Boulder, CO 80309 USA. [Moody, G.; Singh, R.; Cundiff, S. T.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA. [Akimov, I. A.; Bayer, M.] Tech Univ Dortmund, Expt Phys 2, D-44221 Dortmund, Germany. [Akimov, I. A.] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. [Reuter, D.; Wieck, A. D.] Ruhr Univ Bochum, Lehrstuhl Angew Festkoerperphys, D-44780 Bochum, Germany. [Bracker, A. S.; Gammon, D.] Naval Res Lab, Washington, DC 20375 USA. RP Moody, G (reprint author), Univ Colorado, JILA, Boulder, CO 80309 USA. EM cundiff@jila.colorado.edu RI Wieck, Andreas Dirk/C-5129-2009 OI Wieck, Andreas Dirk/0000-0001-9776-2922 NR 8 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262505062 ER PT S AU Noginova, N Rono, V Bates, B Caldwell, JD AF Noginova, N. Rono, V. Bates, B. Caldwell, J. D. GP IEEE TI Plasmon Drag Effect in Metal Nanostructures SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA AB A dramatic enhancement of the photon drag effect was observed in nanostructured gold and silver at localized plasmon resonance conditions. We demonstrated a possibility to control the effect with nanoscale geometry. (C) 2013 Optical Society of America C1 [Noginova, N.; Rono, V.; Bates, B.] Norfolk State Univ, Norfolk, VA 23504 USA. [Caldwell, J. D.] Naval Res Lab, Washington, DC 20375 USA. RP Noginova, N (reprint author), Norfolk State Univ, Norfolk, VA 23504 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 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262505072 ER PT S AU Pruessner, MW Goetz, PG Stievater, TH Rabinovich, WS Urick, VJ AF Pruessner, M. W. Goetz, P. G. Stievater, T. H. Rabinovich, W. S. Urick, V. J. GP IEEE TI Integrated Cascaded Linear Microcavity Filters SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA AB We experimentally demonstrate cascaded microcavities for enhanced bandwidth and extinction. The cavities are integrated into waveguides by etching three sets of quarter-wavelength trenches, each set forming a reflector. Experiments compare well with transfer matrix predictions. C1 [Pruessner, M. W.; Goetz, P. G.; Stievater, T. H.; Rabinovich, W. S.; Urick, V. J.] Naval Res Lab, Washington, DC 20375 USA. RP Pruessner, MW (reprint author), Naval Res Lab, Washington, DC 20375 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262502130 ER PT S AU Schaibley, JR Burgers, AP McCracken, GA Duan, LM Berman, PR Steel, DG Bracker, AS Gammon, D Sham, LJ AF Schaibley, J. R. Burgers, A. P. McCracken, G. A. Duan, L. -M. Berman, P. R. Steel, D. G. Bracker, A. S. Gammon, D. Sham, L. J. GP IEEE TI Entanglement between a Quantum Dot Spin and a Photon SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA ID SINGLE-PHOTON; ATOM AB We demonstrate entanglement between an InAs quantum dot (QD) electron spin qubit and a photon. This valuable quantum information resource can be used to mediate spin-spin entanglement between distant nodes of a QD spin network. C1 [Schaibley, J. R.; Burgers, A. P.; McCracken, G. A.; Duan, L. -M.; Berman, P. R.; Steel, D. G.] Univ Michigan, HM Randall Lab, Ann Arbor, MI 48109 USA. [Bracker, A. S.; Gammon, D.] Naval Res Lab, Washington, DC 20375 USA. [Sham, L. J.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. RP Schaibley, JR (reprint author), Univ Michigan, HM Randall Lab, Ann Arbor, MI 48109 USA. EM dst@eecs.umich.edu; gammon@nrl.navy.mil; lsham@ucsd.edu NR 11 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262505034 ER PT S AU Stievater, TH Pruessner, MW Park, D Rabinovich, WS McGill, RA Holmstrom, SA Khurgin, JB AF Stievater, T. H. Pruessner, M. W. Park, D. Rabinovich, W. S. McGill, R. A. Holmstrom, S. A. Khurgin, J. B. GP IEEE TI Evanescent Field Absorption Spectroscopy of Trace Gases Using Functionalized Microring Resonators SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA AB We detect trace gases at ppb levels using evanescent-field absorption spectroscopy in microring resonators coated with sorbent polymers. The overtone spectra derive from mid-infrared resonances that provide a signature of analyte toxicity. (C) 2013 Optical Society of America C1 [Stievater, T. H.; Pruessner, M. W.; Park, D.; Rabinovich, W. S.; McGill, R. A.] Naval Res Lab, Washington, DC 20375 USA. [Holmstrom, S. A.] Univ Tulsa, Tulsa, OK 74104 USA. [Khurgin, J. B.] Johns Hopkins Univ, Baltimore, MD 21218 USA. RP Stievater, TH (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM opticalmems@nrl.navy.mil 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 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262502119 ER PT S AU Yoon, SJ Palastro, JP Gordon, DF Milchberg, HM AF Yoon, S. J. Palastro, J. P. Gordon, D. F. Milchberg, H. M. GP IEEE TI Quasi-phasematched Laser Wakefield Acceleration In a Corrugated Plasma Channel SO 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) SE Conference on Lasers and Electro-Optics LA English DT Proceedings Paper CT Conference on Lasers and Electro-Optics (CLEO) CY JUN 09-14, 2013 CL San Jose, CA AB Plasma wakefields driven by laser pulses can accelerate electrons to relativistic energies. The energy saturates when electrons outrun the wakefield's accelerating phase. Quasi-phasematching, enabled by corrugated plasma channels, is applied to overcome this limitation. C1 [Yoon, S. J.; Palastro, J. P.; Milchberg, H. M.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA. [Gordon, D. F.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. RP Yoon, SJ (reprint author), Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA. EM sungjunyoon@gmail.com NR 4 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-9020 BN 978-1-55752-973-2 J9 CONF LASER ELECTR PY 2013 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC7WX UT WOS:000355262503278 ER PT S AU Phelps, C Royset, JO Gong, Q AF Phelps, Chris Royset, Johannes O. Gong, Qi GP IEEE TI Sample Average Approximations in Optimal Control of Uncertain Systems SO 2013 IEEE 52ND ANNUAL CONFERENCE ON DECISION AND CONTROL (CDC) SE IEEE Conference on Decision and Control LA English DT Proceedings Paper CT 52nd IEEE Annual Conference on Decision and Control (CDC) CY DEC 10-13, 2013 CL Florence, ITALY SP Honeywell, MathWorks, Springer, Taylor & Francis, Univ Trieste, Elsevier, GE Global Res, Natl Instruments, PendCon, Soc Ind & Appl Math, Wolfram, Journal Franklin Inst, United Technologies Res Ctr, Danieli Automat ID SEARCH; TARGET; MOTION AB This paper focuses on an optimal control problem in which the objective is to minimize the expectation of a cost functional with stochastic parameters. The inclusion of the stochastic parameters in the objective raises new theoretical and computational challenges not present in a standard nonlinear optimal control problem. In this paper, we provide a numerical framework for the solution of this uncertain optimal control problem by taking a sample average approximation approach. An independent random sample is taken from the parameter space, and the expectation is approximated by the sample average. The result is a family of standard nonlinear optimal control problems which can be solved using existing techniques. We provide an optimality function for both the uncertain optimal control problem and its approximation, and show that the approximation based on the sample average approach is consistent in the sense of Polak. We illustrate the approach with a numerical example arising in optimal search for a moving target. C1 [Phelps, Chris; Gong, Qi] Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA. [Royset, Johannes O.] Naval Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA. RP Phelps, C (reprint author), Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA. EM cdphelps@soe.ucsc.edu; joroyset@nps.edu; qigong@soe.ucsc.edu NR 24 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-1546 BN 978-1-4673-5717-3 J9 IEEE DECIS CONTR P PY 2013 BP 1958 EP 1965 PG 8 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BC4AR UT WOS:000352223502046 ER PT S AU Krener, AJ AF Krener, Arthur J. GP IEEE TI Filtering Boundary Value Discrete Time Linear Systems SO 2013 IEEE 52ND ANNUAL CONFERENCE ON DECISION AND CONTROL (CDC) SE IEEE Conference on Decision and Control LA English DT Proceedings Paper CT 52nd IEEE Annual Conference on Decision and Control (CDC) CY DEC 10-13, 2013 CL Florence, ITALY SP Honeywell, MathWorks, Springer, Taylor & Francis, Univ Trieste, Elsevier, GE Global Res, Natl Instruments, PendCon, Soc Ind & Appl Math, Wolfram, Journal Franklin Inst, United Technologies Res Ctr, Danieli Automat AB The Aegis Combat System [1] is used to protect US Navy vessels from planes and missiles. The computer-based command-and-decision element is the core of the Aegis Combat System. This interface makes the ACS capable of simultaneous operation against almost all kinds of threats. The Aegis Ballistic Missile Defense System program is intended to enable the Aegis system to act in a sea-based ballistic missile defense function, to counter short- and medium-range ballistic missiles of the variety typically employed by a number of potential opponent states. It works by firing a large amount of projectiles at the incoming missiles. Critical to the success of this system are real time accurate estimates of the trajectories of the incoming missiles. This requires filtering of the noisy measurements but what distinguishes it from standard filtering is that we know where the missiles are heading. (If they are not heading toward the ship or the target that the ship is protecting then we don't care about them.) In effect we are interested in filtering a system that has boundary constraints. Hence we consider the problem of filtering a linear system that satisfies boundary conditions rather than initial conditions. C1 Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Krener, AJ (reprint author), Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. EM ajkrener@nps.edu 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 0743-1546 BN 978-1-4673-5717-3 J9 IEEE DECIS CONTR P PY 2013 BP 7684 EP 7689 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BC4AR UT WOS:000352223508101 ER PT B AU Abramovich, YI San Antonio, G AF Abramovich, Yuri I. San Antonio, Geoffrey GP IEEE TI Aperture Varying Autoregressive Covariance Modeling for 2D Oversampled Receive Arrays SO 2013 IEEE 5TH INTERNATIONAL WORKSHOP ON COMPUTATIONAL ADVANCES IN MULTI-SENSOR ADAPTIVE PROCESSING (CAMSAP 2013) LA English DT Proceedings Paper CT 5th IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP) CY DEC 15-18, 2013 CL FRANCE SP IEEE DE Over-the-horizon radar; autoregressive modeling; 2D phased array; superdirectivity; oversampled array; HF ID MULTIVARIATE PARAMETRIC MODELS; MAXIMUM-ENTROPY EXTENSIONS; BLOCK MATRICES AB Recently it has been proposed that two-dimensional (2D) oversampled received arrays could be used to provide signal-to-external noise ratio (SENR) gains for over-the-horizon radar applications which are strongly externally noise limited. These array configurations can be used to exploit superdirective adaptive beamforming techniques. A key element of the superdirective adaptive beamforming process is the estimation of the array spatial noise covariance matrix. In this paper we propose a parametric covariance modeling technique called aperture varying autoregressive (AVAR) covariance modeling that captures the 2D spatial correlation structure of high-frequency (HF) background noise sampled by an oversampled 2D receive array. The use of this covariance modeling technique can significantly reduce the computational requirements for the inversion of large spatial covariance matrices. Additional gains are achieved via reduced sample support requirements for an N-element 2D receive array. In this paper we introduce 2D aperture varying autoregressive models AVAR(m, l) that are spatially non-stationary generalizations of traditional autoregressive AR(m) or AR (m, l) techniques. While traditional AR techniques model covariance structure as toeplitz or toeplitz-block-toeplitz, these new AVAR models enforce a banded or doubly banded inverse covariance structure which is more general. The introduced AVAR methods are closely coupled to the oversampled array architecture which in the presence of nearly homogeneous external noise exhibits spatial correlation most strongly amongst closely spaced elements. Therefore the use of these AVAR methods effectively restricts the adaptive beamforming to gains achievable through superdirective beamforming. C1 [Abramovich, Yuri I.] WR Syst, Fairfax, VA 22030 USA. [San Antonio, Geoffrey] US Naval Res Lab, Washington, DC 20375 USA. RP Abramovich, YI (reprint author), WR Syst, Fairfax, VA 22030 USA. FU Office of Naval Research FX This work was sponsored by the Office of Naval Research under an NRL 6.1 Base Program 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 BN 978-1-4673-3146-3; 978-1-4673-3144-9 PY 2013 BP 400 EP + PG 2 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BC1BA UT WOS:000349915100101 ER PT J AU Carley, KM Pfeffer, J Liu, H Morstatter, F Goolsby, R AF Carley, Kathleen M. Pfeffer, Juergen Liu, Huan Morstatter, Fred Goolsby, Rebecca BE Ozyer, T Carrington, P TI Near Real Time Assessment of Social Media Using Geo-Temporal Network Analytics SO 2013 IEEE/ACM INTERNATIONAL CONFERENCE ON ADVANCES IN SOCIAL NETWORKS ANALYSIS AND MINING (ASONAM) LA English DT Proceedings Paper CT IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM) CY AUG 25-28, 2013 CL Niagara Falls, CANADA SP IEEE, Assoc Comp Machinery, Assoc Comp Machinery SIGKDD, IEEE Comp Soc, IEEE TCDE, Global Univ, Hellen American Univ, Springer, Microsoft, EXtra, Springer Verlag, Assoc Comp Machinery SIGMOD AB When a crisis occurs, there is often little time to evaluate the situation and determine how best to respond. We use rapid ethnographic methods centered on the construction of geo-temporally contextualized social and knowledge networks. By utilizing a combination of Twitter and news media, the consulate attack in Libya were examined in near real time. In this work we outline a procedure to extract key insights from the event as an event unfolds using a suite of tools developed by a team of researchers from two universities. C1 [Carley, Kathleen M.; Pfeffer, Juergen] Carnegie Mellon Univ, SCS, ISR, Pittsburgh, PA 15213 USA. [Carley, Kathleen M.] Netanomics, Pittsburgh, PA USA. [Liu, Huan; Morstatter, Fred] Arizona State Univ, CIDSE, Tempe, AZ USA. [Goolsby, Rebecca] Off Naval Res, Arlington, VA 22217 USA. RP Carley, KM (reprint author), Carnegie Mellon Univ, SCS, ISR, Pittsburgh, PA 15213 USA. EM kathleen.carley@cs.cmu.edu; jpfeffer@cs.cmu.edu; huan.liu@asu.edu; fred.morstatter@asu.edu; rebecca.goolsby@navy.mil NR 16 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4503-2240-9 PY 2013 BP 523 EP 530 PG 8 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BC5YC UT WOS:000353639700076 ER PT S AU Anderson, TJ Hobart, KD Tadjer, MJ Koehler, AD Feygelson, TI Hite, JK Pate, BB Kub, FJ Eddy, CR AF Anderson, T. J. Hobart, K. D. Tadjer, M. J. Koehler, A. D. Feygelson, T. I. Hite, J. K. Pate, B. B. Kub, F. J. Eddy, C. R., Jr. GP IEEE TI Nanocrystalline Diamond for Near Junction Heat Spreading in GaN Power HEMTs SO 2013 IEEE COMPOUND SEMICONDUCTOR INTEGRATED CIRCUIT SYMPOSIUM (CSICS): INTEGRATED CIRCUITS IN GAAS, INP, SIGE, GAN AND OTHER COMPOUND SEMICONDUCTORS SE IEEE Compound Semiconductor Integrated Circuits Symposium LA English DT Proceedings Paper CT 35th IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS) - Integrated Circuits in GaAs, InP, SiGe, GaN and other Compound Semiconductors CY OCT 13-16, 2013 CL Monterey, CA SP IEEE, IEEE Electron Devices Soc, IEEE Solid State Circuits Soc, IEEE Microwave Theory & Tech Soc DE GaN; HEMT; nanocrystalline diamond ID NANODIAMOND; DEVICES; RAMAN AB Reduced performance in Gallium Nitride (GaN)-based high electron mobility transistors (HEMTs) as a result of self-heating has been well-documented. A new approach, termed "gate after diamond," is shown to improve the thermal budget of the deposition process and enable large-area diamond without degrading the gate metal. Nanocrystalline (NCD)-capped devices had 20% lower channel temperature at equivalent power dissipation. Improved electrical characteristics were observed, notably improved on-resistance and breakdown voltage, and reduced gate leakage. Further refinements to the NCD growth process have enabled deposition directly on the GaN surface. Pulsed I-V measurements indicate a comparable passivation effect to conventional SiNX-capped devices. C1 [Anderson, T. J.; Hobart, K. D.; Tadjer, M. J.; Koehler, A. D.; Feygelson, T. I.; Hite, J. K.; Pate, B. B.; Kub, F. J.; Eddy, C. R., Jr.] Naval Res Lab, Washington, DC 20375 USA. RP Anderson, TJ (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM travis.anderson@nrl.navy.mil NR 12 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2162-7940 BN 978-1-4799-0583-6 J9 IEEE COMP SEMICON PY 2013 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BE2OT UT WOS:000369740100060 ER PT S AU Poust, B Gambin, V Sandhu, R Smorchkova, I Lewis, G Elmadjian, R Li, D Geiger, C Heying, B Wojtowicz, M Oki, A Pate, BB Feygelson, T Hobart, K AF Poust, Benjamin Gambin, Vincent Sandhu, Rajinder Smorchkova, Ioulia Lewis, Gregory Elmadjian, Raffi Li, Danny Geiger, Craig Heying, Benjamin Wojtowicz, Mike Oki, Aaron Pate, Bradford B. Feygelson, Tatyana Hobart, Karl GP IEEE TI Selective Growth of Diamond in Thermal Vias for GaN HEMTs SO 2013 IEEE COMPOUND SEMICONDUCTOR INTEGRATED CIRCUIT SYMPOSIUM (CSICS): INTEGRATED CIRCUITS IN GAAS, INP, SIGE, GAN AND OTHER COMPOUND SEMICONDUCTORS SE IEEE Compound Semiconductor Integrated Circuits Symposium LA English DT Proceedings Paper CT 35th IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS) - Integrated Circuits in GaAs, InP, SiGe, GaN and other Compound Semiconductors CY OCT 13-16, 2013 CL Monterey, CA SP IEEE, IEEE Electron Devices Soc, IEEE Solid State Circuits Soc, IEEE Microwave Theory & Tech Soc DE Power amplifiers; diamond; HEMTs AB GaN on SiC technology has offered tremendous benefits over existing GaAs-based RF technologies. The high breakdown voltage and current handling capability of GaN HEMTs enable a 10x increase in RF power over conventional GaAs-based devices for the same device size. These benefits translate to dramatically improved performance for military and commercial communications, radar and high-power RF systems. However, despite the high thermal conductivity materials and optimized epitaxial profiles already being used, additional improvement of MMIC performance is limited by thermal constraints. Substrate and near channel thermal resistance is a key thermal bottleneck limiting device compaction and junction temperature reduction. NGAS will report on revolutionary methods being developed to directly integrate high quality, high thermal conductivity diamond materials with more than 4x greater thermal conductivity over existing state-of-the-art GaN on SiC HEMT technology. Reducing temperature in the device channel and surrounding regions is critical for reliable operation, supporting additional device compaction and improving circuit performance. C1 [Poust, Benjamin; Gambin, Vincent; Sandhu, Rajinder; Smorchkova, Ioulia; Lewis, Gregory; Elmadjian, Raffi; Li, Danny; Geiger, Craig; Heying, Benjamin; Wojtowicz, Mike; Oki, Aaron] Northrop Grumman Aerosp Syst, Redondo Beach, CA 90278 USA. [Pate, Bradford B.; Feygelson, Tatyana; Hobart, Karl] Naval Res Lab, Washington, DC 20375 USA. RP Poust, B (reprint author), Northrop Grumman Aerosp Syst, Redondo Beach, CA 90278 USA. 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 2162-7940 BN 978-1-4799-0583-6 J9 IEEE COMP SEMICON PY 2013 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BE2OT UT WOS:000369740100063 ER PT S AU Mo, HN Peng, Z Zhou, Z Zuba, M Jiang, ZH Cui, JH AF Mo, Haining Peng, Zheng Zhou, Zhong Zuba, Michael Jiang, Zaihan Cui, Jun-Hong GP IEEE TI Coding based Multi-hop Coordinated Reliable Data Transfer for Underwater Acoustic Networks: Design, Implementation and Tests SO 2013 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM) SE IEEE Global Communications Conference LA English DT Proceedings Paper CT IEEE Global Communications Conference (GLOBECOM) CY DEC 09-13, 2013 CL Atlanta, GA SP IEEE AB Motivated by some critical observations from field tests, in this paper, we design and implement a Coding based multi-hop Coordinated Reliable Data Transfer (CCRDT) protocol for underwater acoustic networks. CCRDT is based on hop-by-hop reliable data transfer with multi-hop coordination. For the per-hop data transfer, a GF(256) Random Linear Coding scheme and a coding ratio estimation approach are proposed to guarantee the reliability and efficiency of data transfer. In addition, a multi-hop coordination scheme is designed to enable transmission pipelining that allows multiple nodes to transmit simultaneously. By carefully scheduling the transmission of every node, our multi-hop coordination scheme effectively eliminates packet collisions, which further improves the end-to-end throughput. We implement CCRDT on a lab testbed and conducted extensive tests to evaluate its performance. Our results show that CCRDT achieves a higher end-to-end throughput than other existing reliable data transfer protocols which have been implemented in real systems. C1 [Mo, Haining; Peng, Zheng; Zhou, Zhong; Zuba, Michael; Cui, Jun-Hong] Univ Connecticut, Comp Sci & Engn Dept, Storrs, CT 06269 USA. [Jiang, Zaihan] US Naval Res Lab, Acoust Div, Washington, DC USA. RP Mo, HN (reprint author), Univ Connecticut, Comp Sci & Engn Dept, Storrs, CT 06269 USA. EM haining.mo@engr.uconn.edu; zhengpeng@engr.uconn.edu; zhongzhou@engr.uconn.edu; zuba@engr.uconn.edu; jcui@engr.uconn.edu RI Peng, Zheng/J-3629-2014 OI Peng, Zheng/0000-0001-9055-1436 NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2334-0983 BN 978-1-4799-1353-4 J9 IEEE GLOB COMM CONF PY 2013 BP 4566 EP 4571 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BD0LG UT WOS:000357299604111 ER PT S AU Thulasiraman, P AF Thulasiraman, Preetha GP IEEE TI RPL Routing for Multigateway AMI Networks Under Interference Constraints SO 2013 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC) SE IEEE International Conference on Communications LA English DT Proceedings Paper CT IEEE International Conference on Communications (ICC) CY JUN 09-13, 2013 CL Budapest, HUNGARY SP IEEE AB The IETF is developing an IPv6 Routing Protocol for Low Power and Lossy Networks (RPL) for smart machine-tomachine networks. In this paper, we present a RPL protocol for the mesh based multigateway Advanced Metering Infrastructure (AMI) of the Smart Grid. The multigateway RPL is based on the construction and maintenance of multiple directed acyclic graphs (DAG) that are each rooted at a gateway. The DAGs are constructed using node rank computation. We incorporate an interference based routing metric into the RPL to facilitate rank computation. The interference link metric, based on SINR measurements, is used to construct and maintain DAGs for least interference routing. We will show that our multigateway RPL protocol performs better in terms of packet delivery ratio, delay and throughput when compared to generic routing schemes such as AODV and RPL protocols that use ETX (expected transmission time) as the link metric. We also study the multigateway RPL under link failures to show that high throughput data routing can be achieved. C1 Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA. RP Thulasiraman, P (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA. EM pthulas1@nps.edu NR 17 TC 3 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1550-3607 BN 978-1-4673-3122-7 J9 IEEE ICC PY 2013 BP 4477 EP 4482 PG 6 WC Telecommunications SC Telecommunications GA BC0WB UT WOS:000349673804087 ER PT S AU Miller, TL James, MW Roberts, JB Biswas, SK Cecil, D Jones, WL Johnson, J Farrar, S Sahawneh, S Ruf, CS Morris, M Uhlhorn, EW Black, PG AF Miller, Timothy L. James, M. W. Roberts, J. B. Biswas, S. K. Cecil, D. Jones, W. L. Johnson, J. Farrar, S. Sahawneh, S. Ruf, C. S. Morris, M. Uhlhorn, E. W. Black, P. G. GP IEEE TI THE HURRICANE IMAGING RADIOMETER: PRESENT AND FUTURE SO 2013 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 International Geoscience and Remote Sensing Symposium (IGARSS) CY JUL 21-26, 2013 CL Melbourne, AUSTRALIA SP IEEE, Inst Elect & Elect Engineers, Geoscience & Remote Sensing Soc DE HIRAD; hurricane wind speed; imaging radiometer AB The Hurricane Imaging Radiometer (HIRAD) is an airborne passive microwave radiometer designed to provide high resolution, wide swath imagery of surface wind speed in tropical cyclones from a low profile planar antenna with no mechanical scanning. Wind speed and rain rate images from HIRAD's first field campaign (GRIP, 2010) are presented here followed, by a discussion on the performance of the newly installed thermal control system during the 2012 HS3 campaign. The paper ends with a discussion on the next generation dual polarization HIRAD antenna (already designed) for a future system capable of measuring wind direction as well as wind speed. C1 [Miller, Timothy L.; James, M. W.; Roberts, J. B.; Biswas, S. K.; Cecil, D.] NASA, MSFC, Earth Sci Off, Huntsville, AL 35805 USA. [Jones, W. L.; Johnson, J.; Farrar, S.; Sahawneh, S.] Univ Cent Florida, Dept EECS, Orlando, FL 32816 USA. [Ruf, C. S.; Morris, M.] Univ Michigan, AOSS Dept, Ann Arbor, MI 48109 USA. [Uhlhorn, E. W.] NOAA, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA. [Black, P. G.] SAIC Inc, Naval Res Lab, Monterey, CA 93940 USA. RP Miller, TL (reprint author), NASA, MSFC, Earth Sci Off, Huntsville, AL 35805 USA. RI Ruf, Christopher/I-9463-2012 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 SN 2153-6996 BN 978-1-4799-1114-1 J9 INT GEOSCI REMOTE SE PY 2013 BP 1897 EP 1899 DI 10.1109/IGARSS.2013.6723174 PG 3 WC Engineering, Electrical & Electronic; Geosciences, Multidisciplinary; Remote Sensing SC Engineering; Geology; Remote Sensing GA BB7JO UT WOS:000345638901255 ER PT S AU Serafino, F Ludeno, G Lugni, C Flampouris, S Natale, A Arturi, D Soldovieri, F AF Serafino, F. Ludeno, G. Lugni, C. Flampouris, S. Natale, A. Arturi, D. Soldovieri, F. GP IEEE TI GENERATION OF BATHYMETRIC MAPS WITH HIGH RESOLUTION THROUGH THE ANALYSIS OF NAUTICAL X-BAND RADAR IMAGES SO 2013 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 International Geoscience and Remote Sensing Symposium (IGARSS) CY JUL 21-26, 2013 CL Melbourne, AUSTRALIA SP IEEE, Inst Elect & Elect Engineers, Geoscience & Remote Sensing Soc DE sea state monitoring; X-band radar data; shallow coastal areas; bathymetry AB This work deals with the analysis of a novel data processing approach to estimate the local depth in a shallow coastal area starting from X-band radar data. The approach is based on the maximization of the Normalized Scalar Product (NSP) between the measured and the theoretical wave dispersion relations, which embed the dependence on the searched for parameters (current vector and depth). In the present work, we presented an improvement version of NSP approach able to estimate the local depth, which allows to obtain a high resolution spatial map (subpixel) of the investigated area. The performances of the NSP approach is evaluated by comparing the estimated bathymetry with the ground truth provided the multi-beam echo sounder reported on the same grid resolution of the bathymetric maps of the X-band radar images. C1 [Serafino, F.; Natale, A.; Soldovieri, F.] CNR, Inst Electromagnet Sensing Environm, Via Diocleziano 328, I-80124 Naples, Italy. [Ludeno, G.; Arturi, D.] Vitrociset Spa, Rome 00156, Italy. [Ludeno, G.] Univ Naples 2, Ind & Informat Engn Dept, I-81031 Rome, Italy. CNR, INSEAN Maritime Res Inst, Natl Res Council, I-00128 Rome, Italy. [Lugni, C.; Flampouris, S.] Naval Res Lab, Ocean Dynam Predict Branch, Stennis Space Ctr, MS 39529 USA. [Arturi, D.] Univ Studies Mediterranea, Coll Telecommun Engn, Dept Informat Engn, I-89124 Reggio Di Calabria, Italy. RP Serafino, F (reprint author), CNR, Inst Electromagnet Sensing Environm, Via Diocleziano 328, I-80124 Naples, Italy. EM serafino.f@irea.cnr.it; ludeno.g@irea.cnr.it; c.lugni@insean.it; stylianos.flampouris.ctr.gr@nrlssc.navy.mil; d.arturi.cons@vitrociset.it; soldovieri.f@irea.cnr.it RI Lugni, Claudio/C-5382-2016; OI Lugni, Claudio/0000-0003-3747-6048; Ludeno, Giovanni/0000-0001-5672-2721; SOLDOVIERI, FRANCESCO/0000-0002-0377-3127 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 SN 2153-6996 BN 978-1-4799-1114-1 J9 INT GEOSCI REMOTE SE PY 2013 BP 2278 EP 2280 DI 10.1109/IGARSS.2013.6723272 PG 3 WC Engineering, Electrical & Electronic; Geosciences, Multidisciplinary; Remote Sensing SC Engineering; Geology; Remote Sensing GA BB7JO UT WOS:000345638902096 ER PT S AU Meyer, DJ AF Meyer, David J. GP IEEE TI Assessment of GaN High-Electron-Mobility Transistor Reliability for RF Amplifier Applications SO 2013 IEEE INTERNATIONAL INTEGRATED RELIABILITY WORKSHOP FINAL REPORT (IRW) SE IEEE International Integrated Reliability Workshop Final Report LA English DT Proceedings Paper CT IEEE International Integrated Reliability Workshop (IIRW) CY OCT 13-17, 2013 CL South Lake Tahoe, CA SP IEEE, IEEE Electron Devices Soc, IEEE Reliabil Soc C1 Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA. RP Meyer, DJ (reprint author), Naval Res Lab, Elect Sci & Technol Div, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM david.meyer@nrl.navy.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 1930-8841 BN 978-1-4799-0350-4 J9 INT INTEG REL WRKSP PY 2013 BP 31 EP 31 PG 1 WC Engineering, Electrical & Electronic SC Engineering GA BC7OC UT WOS:000355093800015 ER PT S AU Masuda, M Derickson, D Weatherford, T Porter, M AF Masuda, Michael Derickson, Dennis Weatherford, Todd Porter, Matthew GP IEEE TI Effects of Gate Stress Evaluated Using Low Frequency Noise Measurements in GaN on Si HEMTs SO 2013 IEEE INTERNATIONAL INTEGRATED RELIABILITY WORKSHOP FINAL REPORT (IRW) SE IEEE International Integrated Reliability Workshop Final Report LA English DT Proceedings Paper CT IEEE International Integrated Reliability Workshop (IIRW) CY OCT 13-17, 2013 CL South Lake Tahoe, CA SP IEEE, IEEE Electron Devices Soc, IEEE Reliabil Soc DE GaN on Si; HEMT; low frequency noise; RTS noise; 1/f noise; gate stress; electron traps; activation energy AB Change in the drain and gate current low frequency noise (LFN) spectra of GaN-on-Si high electron mobility transistors (HEMTs) is measured before and after the application of electric field stressing on the gate. Extracted Hooge parameters are found to be consistent with previous research. RTS noise spectra are found to appear superimposed upon the 1/f spectrum after device stress. Time constants of the RTS spectra are characterized over a range of temperatures and voltages. It is found that RTS noise time constants change with ln(tau(rts)) proportional to 1/kT allowing trap activation energies to be calculated. Electron trapping mechanisms responsible for the modification of the RTS spectra are discussed in connection with degradation processes induced by field dependent stressing. C1 [Masuda, Michael; Derickson, Dennis] Cal Poly State Univ, Dept Elect Engn, San Luis Obispo, CA 93407 USA. [Weatherford, Todd; Porter, Matthew] Naval Postgrad Sch, Elect & Comp Engn Dept, Monterey, CA USA. RP Masuda, M (reprint author), Cal Poly State Univ, Dept Elect Engn, San Luis Obispo, CA 93407 USA. NR 10 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1930-8841 BN 978-1-4799-0350-4 J9 INT INTEG REL WRKSP PY 2013 BP 121 EP 124 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BC7OC UT WOS:000355093800040 ER PT J AU Kam, C Kompella, S Ephremides, A AF Kam, Clement Kompella, Sastry Ephremides, Anthony GP IEEE TI Age of Information Under Random Updates SO 2013 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS (ISIT) SE IEEE International Symposium on Information Theory LA English DT Proceedings Paper CT IEEE International Symposium on Information Theory (ISIT) CY JUL 07-12, 2013 CL Istanbul, TURKEY SP IEEE, IEEE Informat Theory Soc AB We consider the system where a source randomly generates status update messages and transmits them via a network cloud to the intended destination. These update message can take different times to traverse the network, which we model as exponential service times, and may result in packets reaching the destination out of order, rendering some of the earlier transmissions obsolete. We analyze the status update age for such a system, and show that it tracks well with simulation results. C1 [Kam, Clement; Kompella, Sastry] Naval Res Lab, Div Informat Technol, Washington, DC 20375 USA. RP Kam, C (reprint author), Naval Res Lab, Div Informat Technol, Washington, DC 20375 USA. FU Office of Naval Research. FX This work was supported by the Office of Naval Research. NR 6 TC 11 Z9 11 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-0446-4 J9 IEEE INT SYMP INFO PY 2013 BP 66 EP + PG 2 WC Computer Science, Information Systems; Telecommunications SC Computer Science; Telecommunications GA BC0CQ UT WOS:000348913400014 ER PT S AU Rao, JBL Mital, R Patel, DP Parent, MG Tavik, GC AF Rao, J. B. L. Mital, R. Patel, D. P. Parent, M. G. Tavik, G. C. GP IEEE TI Low-Cost Phased Array Antenna for Satellite Communications on Mobile Earth Stations SO 2013 IEEE INTERNATIONAL SYMPOSIUM ON PHASED ARRAY SYSTEMS AND TECHNOLOGY SE IEEE International Symposium on Phased Array Systems & Technology LA English DT Proceedings Paper CT 5th IEEE International Symposium on Phased Array Systems and Technology CY OCT 15-18, 2013 CL Waltham, MA SP IEEE ID GEOSYNCHRONOUS ARC COVERAGE; LINEAR-ARRAY; 60-DEGREES AB Future US Navy ships are expected to use multifunction, low radar cross section (RCS) phased array antennas for satellite communications. In this paper, we present a unique phased array concept in which a single planar array antenna (on a mobile earth station) can be used to communicate simultaneously with several geostationary (GEO) satellites by generating multiple independent beams. This array will have full electronic beam scanning capability in the azimuth direction with fixed beam positions in the orthogonal (elevation) plane using one or at most two hard-wired squints without the need for redesigning the antenna for different earth station locations. The proposed technique will reduce the cost and complexity of phased array antennas designed for mobile earth stations. C1 [Rao, J. B. L.] Sotera Def Solut Inc, Herndon, VA 20171 USA. [Mital, R.; Patel, D. P.; Parent, M. G.; Tavik, G. C.] US Navy, Res Lab, Washington, DC 20375 USA. RP Rao, JBL (reprint author), Sotera Def Solut Inc, Herndon, VA 20171 USA. EM rashmi.mital@nrl.navy.mil 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 1554-8422 BN 978-1-4673-1127-4 J9 IEEE INT SYMP PHASE PY 2013 BP 214 EP 219 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BC1WA UT WOS:000350442700038 ER PT S AU Coleman, JO Dorsey, WM AF Coleman, Jeffrey O. Dorsey, W. Mark GP IEEE TI Phase-only Beam Broadening in Large Transmit Arrays Using Complex-Weight Gradient Descent SO 2013 IEEE INTERNATIONAL SYMPOSIUM ON PHASED ARRAY SYSTEMS AND TECHNOLOGY SE IEEE International Symposium on Phased Array Systems & Technology LA English DT Proceedings Paper CT 5th IEEE International Symposium on Phased Array Systems and Technology CY OCT 15-18, 2013 CL Waltham, MA SP IEEE AB Day recently obtained phase-only element weights for a large transmit array of arbitrary geometry by optimizing complex weights using an objective function that penalized amplitude variation. He used gradient descent modified with a classic SVD technique to create point and sector nulls as desired. Here Day's approach is extended to allow for main-beam broadening as might be needed to illuminate multiple receive beams. This is done by adding a second objective term, one penalizing variation in array-factor amplitude across a grid of beamspace points covering the desired broad main beam. The tension between the two objective terms turns out to be challenging to manage, and at this preliminary stage of algorithm development, parameter scheduling across a sequence of stages of the optimization is required to obtain good solutions. C1 [Coleman, Jeffrey O.; Dorsey, W. Mark] Naval Res Lab, Div Radar, Washington, DC 20375 USA. RP Coleman, JO (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 USA. EM jeffc@alum.mit.edu; wmdorsey@vt.edu NR 3 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1554-8422 BN 978-1-4673-1127-4 J9 IEEE INT SYMP PHASE PY 2013 BP 440 EP 447 PG 8 WC Engineering, Electrical & Electronic SC Engineering GA BC1WA UT WOS:000350442700076 ER PT S AU Mital, R Rao, JBL Patel, DP Tavik, GC AF Mital, R. Rao, J. B. L. Patel, D. P. Tavik, G. C. GP IEEE TI Wideband Multifunction Array Architectures using Wavelength-Scaled Radiating Elements SO 2013 IEEE INTERNATIONAL SYMPOSIUM ON PHASED ARRAY SYSTEMS AND TECHNOLOGY SE IEEE International Symposium on Phased Array Systems & Technology LA English DT Proceedings Paper CT 5th IEEE International Symposium on Phased Array Systems and Technology CY OCT 15-18, 2013 CL Waltham, MA SP IEEE AB There has been a significant increase in developing multifunction wideband arrays to consolidate the large number of narrowband reflector antennas on US Navy ships. However, the use of conventional methods results in a need for an extremely large number of radiating elements to populate these arrays resulting in a complex and costly multifunction array. We propose architectures that use wavelengthscaled arrays in combination with asymmetrical distribution of arrays to reduce the number of radiating elements by more than a factor of two as well as ease bandwidth requirements. Additionally, a combination of rectangular and square apertures is used, where possible to help further reduce the number of simultaneous beams from any section of the full array. These proposed architectures are capable of providing eight different beams from a single wideband multifunction array. C1 [Mital, R.; Patel, D. P.; Tavik, G. C.] US Naval Res Lab, Washington, DC 20375 USA. [Rao, J. B. L.] Sotera Def Solut Inc, Herndon, VA 20171 USA. RP Mital, R (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM rashmi.mital@nrl.navy.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 1554-8422 BN 978-1-4673-1127-4 J9 IEEE INT SYMP PHASE PY 2013 BP 588 EP 592 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BC1WA UT WOS:000350442700101 ER PT S AU Ellingson, SW Craig, J Dowell, J Taylor, GB Helmboldt, JF AF Ellingson, S. W. Craig, J. Dowell, J. Taylor, G. B. Helmboldt, J. F. GP IEEE TI Design and Commissioning of the LWA1 Radio Telescope SO 2013 IEEE INTERNATIONAL SYMPOSIUM ON PHASED ARRAY SYSTEMS AND TECHNOLOGY SE IEEE International Symposium on Phased Array Systems & Technology LA English DT Proceedings Paper CT 5th IEEE International Symposium on Phased Array Systems and Technology CY OCT 15-18, 2013 CL Waltham, MA SP IEEE ID SYSTEM AB LWA1 is a new large radio telescope array operating in the frequency range 10-88 MHz, located in central New Mexico. The telescope consists of about 260 pairs of dipole-type antennas whose outputs are individually digitized and formed into beams. Simultaneously, signals from all dipoles can be recorded using one of the telescope's "all dipoles" modes, facilitating all-sky imaging. Notable features of the instrument include four independently-steerable beams utilizing digital true time delay beamforming, high intrinsic sensitivity (approximate to 6 kJy zenith system equivalent flux density), large instantaneous bandwidth (up to 78 MHz), and large field of view (about 3-10., depending on frequency and zenith angle of pointing). This paper summarizes the design of LWA1, its performance as determined in commissioning experiments, and results from early science observations demonstrating the capabilities of the instrument. C1 [Ellingson, S. W.] Virginia Tech, Dept Elect & Comp Engn, Blacksburg, VA 24061 USA. [Craig, J.; Dowell, J.; Taylor, G. B.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA. [Helmboldt, J. F.] US Naval Res Lab, Washington, DC 20375 USA. RP Ellingson, SW (reprint author), Virginia Tech, Dept Elect & Comp Engn, Blacksburg, VA 24061 USA. EM ellingson@vt.edu; jcraig@unm.edu; jdowell@unm.edu; gbtaylor@unm.edu; joe.helmboldt@nrl.navy.mil NR 14 TC 3 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1554-8422 BN 978-1-4673-1127-4 J9 IEEE INT SYMP PHASE PY 2013 BP 776 EP 783 PG 8 WC Engineering, Electrical & Electronic SC Engineering GA BC1WA UT WOS:000350442700132 ER PT J AU Harmon, SR Hutchinson, MN Urick, VJ Williams, KJ AF Harmon, Sharon R. Hutchinson, Meredith N. Urick, Vincent J. Williams, Keith J. GP IEEE TI Determining the Magnitude and Relative Phase of Photodiode IMD2 Using Amplitude Matched MZM-Distortion Cancellation Technique SO 2013 IEEE INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP) LA English DT Proceedings Paper CT IEEE International Topical Meeting on Microwave Photonics (MWP) CY OCT 28-31, 2013 CL Alexandria, VA SP IEEE, IEEE Photon Soc, IEICE, Discovery Semicond Inc, IEEE MTT S, Northrop Grumman AB We characterize photodiode-induced second-order intermodulation distortion (IMD2) implementing a new Mach-Zehnder modulator (MZM) distortion cancellation technique. The magnitude and relative phase of photodiode IMD2 can be determined by measurement of an intensity-modulated directdetection (IMDD) link at the cancellation condition. The magnitude is also found through photodiode fundamental frequency response and calculated second-order output intercept point (OIP2). Experimental results show that the IMDD technique is suitable for rapid amplitude estimation, while also providing phase information for the photodiode non-linearity. C1 [Harmon, Sharon R.] Sotera Def Solut Inc, Annapolis Jct, MD 20701 USA. [Hutchinson, Meredith N.; Urick, Vincent J.; Williams, Keith J.] US Naval Res Lab, Photon Technol Branch, Washington, DC 20375 USA. RP Harmon, SR (reprint author), Sotera Def Solut Inc, Annapolis Jct, MD 20701 USA. EM sharon.harmon.ctr@nrl.navy.mil 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 BN 978-1-4673-6071-5 PY 2013 BP 17 EP 20 PG 4 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC1NL UT WOS:000350285600005 ER PT J AU Hu, Y Menyuk, CR Urick, VJ Williams, KJ AF Hu, Yue Menyuk, Curtis R. Urick, Vincent J. Williams, Keith J. GP IEEE TI Sources of nonlinearity in a PIN photodetector at high applied reverse bias SO 2013 IEEE INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP) LA English DT Proceedings Paper CT IEEE International Topical Meeting on Microwave Photonics (MWP) CY OCT 28-31, 2013 CL Alexandria, VA SP IEEE, IEEE Photon Soc, IEICE, Discovery Semicond Inc, IEEE MTT S, Northrop Grumman ID HIGH ILLUMINATION; PHOTODIODE; SIMULATION AB One-dimensional (1D) and two-dimensional (2D) drift-diffusion models were created to investigate the sources of nonlinearity in a high-current p-i-n photodetector. Incomplete ionization, an external circuit, and impact ionization are all included in the model. We achieve good agreement with the experimental data with both the 1D and 2D model. We show that impact ionization is the dominant source of device nonlinearity at large applied reverse bias. The electron and hole current contributions to the second harmonic power were calculated. We find that the impact ionization is more important for the electrons. We also find that the hole velocity saturates slowly with increasing reverse bias, and the hole current makes a large contribution to the harmonic power at 10 V. This result implies that decreasing the hole injection will decrease the harmonic power. C1 [Hu, Yue; Menyuk, Curtis R.] Univ Maryland Baltimore Cty, Comp Sci & Elect Engn Dept, Baltimore, MD 21250 USA. [Urick, Vincent J.; Williams, Keith J.] Naval Res Lab, Photon Technol Branch, Washington, DC 20375 USA. RP Hu, Y (reprint author), Univ Maryland Baltimore Cty, Comp Sci & Elect Engn Dept, Baltimore, MD 21250 USA. EM yuehu1@umbc.edu NR 18 TC 4 Z9 4 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-6071-5 PY 2013 BP 282 EP 285 PG 4 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BC1NL UT WOS:000350285600073 ER PT J AU Shea, JM Macker, JP AF Shea, John M. Macker, Joseph P. GP IEEE TI Automatic Selection of Number of Clusters in Networks using Relative Eigenvalue Quality SO 2013 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2013) LA English DT Proceedings Paper CT IEEE Military Communications Conference CY NOV 18-20, 2013 CL BAE Syst, San Diego, CA SP IEEE, IEEE Comp Soc, AFCEA, IEEE Commun Soc, MITRE HO BAE Syst AB In communication networks, it is often useful to partition the networks into disjoint clusters so that hierarchical protocols, such as hierarchical routing, can be used. Many clustering techniques have been developed for this purpose, including connectivity-based, centroid-based, and spectral methods. One issue with all of these methods is how to select an appropriate number of clusters from the structure of the network. In this paper, we consider clustering techniques based on spectral graph theory in which the relations among nodes in a communication network are mapped onto a graph. We consider techniques that are designed to minimize the multiway normalized cut, a metric that tries to simultaneously minimize the number of edges cut between clusters while balancing the volumes of the clusters. We develop a new method for determining the number of clusters based on the eigenvalues of a normalized graph Laplacian matrix by comparing the eigenvalues to the statistics of a certain type of random cut of the graph. Performance results are presented to demonstrate the effectiveness of our algorithm. C1 [Shea, John M.] Univ Florida, Wireless Informat Networking Grp, Gainesville, FL 32611 USA. [Macker, Joseph P.] US Navy, Res Lab, Informat Technol Div, Washington, DC 20375 USA. RP Shea, JM (reprint author), Univ Florida, Wireless Informat Networking Grp, Gainesville, FL 32611 USA. EM jshea@ece.ufl.edu; joseph.macker@nrl.navy.mil FU Group-wise Tactical Edge Networking (GTEN) effort at NRL under the OSD Network Communication Capability Program (NCCP) FX The work was funded by the Group-wise Tactical Edge Networking (GTEN) effort at NRL under the OSD Network Communication Capability Program (NCCP). NR 14 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-7695-5124-1 PY 2013 BP 131 EP 136 DI 10.1109/MILCOM.2013.32 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BB8PB UT WOS:000347184000024 ER PT J AU Robertson, A Molnar, J Boksiner, J AF Robertson, Andrew Molnar, Joseph Boksiner, Jeffrey GP IEEE TI Spectrum Database Poisoning for Operational Security in Policy-Based Spectrum Operations SO 2013 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2013) LA English DT Proceedings Paper CT IEEE Military Communications Conference CY NOV 18-20, 2013 CL BAE Syst, San Diego, CA SP IEEE, IEEE Comp Soc, AFCEA, IEEE Commun Soc, MITRE HO BAE Syst AB We consider two games played between a spectrum manager and an adversary. The manager attempts to allocate spectrum to primary DoD wireless users and secondary non-DoD users by means of a dynamically updated database. The adversary attempts to detect the presence of DoD users within a cell by querying the database. To prevent this, the manager may add false allocation entries into the database at the cost of possibly excluding legitimate secondary users. We calculate the Nash equilibria of these games and show that they can be surprisingly favorable to the DoD and the secondary network. The manager can ensure that the enemy derives no utility from the database without excluding many secondary users on average. C1 [Robertson, Andrew; Molnar, Joseph] Naval Res Lab, Networks & Commun Syst Branch, Washington, DC 20375 USA. [Boksiner, Jeffrey] US Army Commun Elect Res, Dev & Engn Ctr CERDEC, Space & Terr Commun, Aberdeen Proving Ground, MD USA. RP Robertson, A (reprint author), Naval Res Lab, Networks & Commun Syst Branch, Washington, DC 20375 USA. FU Office of Secretary of Defense (OSD) Networked Communications Capabilities Program.; NRL Karles Fellowship. FX This work is sponsored by the Office of Secretary of Defense (OSD) Networked Communications Capabilities Program. The authors would also like to thank Dr. Syed A.Shah, Associate Director, Network Technologies of the Office of the Secretary of Defense (OSD) for his support of this work. Andrew Robertson gratefully acknowledges the support provided by the NRL Karles Fellowship. NR 10 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-7695-5124-1 PY 2013 BP 382 EP 387 DI 10.1109/MILCOM.2013.72 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BB8PB UT WOS:000347184000065 ER PT J AU Kam, C Kompella, S Ephremides, A Jiang, ZH AF Kam, Clement Kompella, Sastry Ephremides, Anthony Jiang, Zaihan GP IEEE TI On Optimal Wireless Scheduling with Propagation Delays SO 2013 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2013) LA English DT Proceedings Paper CT IEEE Military Communications Conference CY NOV 18-20, 2013 CL BAE Syst, San Diego, CA SP IEEE, IEEE Comp Soc, AFCEA, IEEE Commun Soc, MITRE HO BAE Syst ID RADIO NETWORKS AB The minimum-length scheduling problem has recently been studied for wireless networks with a realistic physical interference model. In these approaches, the propagation delay is ignored due to the relatively fast speed of RF waves compared to the transmission duration. However, signals in underwater acoustic networks travel at a much slower speed, so the propagation cannot be ignored in determining the transmission schedule. In this work, we highlight the difficulty in determining the minimum-length schedule for networks with non-negligible propagation delays, and we identify some special cases in which the approach without propagation delays can be applied, in some cases yielding an optimal schedule. C1 [Kam, Clement; Kompella, Sastry] Naval Res Lab, Div Informat Technol, Washington, DC 20375 USA. [Ephremides, Anthony] Univ Maryland, Elect & Comp Engn Dept, College Pk, MD 20742 USA. [Jiang, Zaihan] US Navy, Res Lab, Div Acoust, Washington, DC 20375 USA. RP Kam, C (reprint author), Naval Res Lab, Div Informat Technol, Washington, DC 20375 USA. FU Office of Naval Research FX This work was supported by the Office of Naval Research. NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-7695-5124-1 PY 2013 BP 406 EP 411 DI 10.1109/MILCOM.2013.76 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BB8PB UT WOS:000347184000069 ER PT J AU Heide, DA Cohen, AE Lee, YT Moran, TM AF Heide, David A. Cohen, Aaron E. Lee, Yvette T. Moran, Thomas M. GP IEEE TI Variable Data Rate Vocoder Improvements For Secure Interoperable DoD Voice Communication SO 2013 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2013) LA English DT Proceedings Paper CT IEEE Military Communications Conference CY NOV 18-20, 2013 CL BAE Syst, San Diego, CA SP IEEE, IEEE Comp Soc, AFCEA, IEEE Commun Soc, MITRE HO BAE Syst AB One intermediate goal towards achieving universal secure voice interoperability in the Department of Defense (DoD) has been the development of a universal voice encoder (vocoder). This vocoder would seamlessly encode speech at a wide range of interoperable variable and fixed data rates to suit a wide range of DoD communication equipment. This paper describes the most important features of such a vocoder and recent advancements in achieving this goal. Specifically this paper will describe three main areas: 1) Summary of the variable data rate (VDR) algorithm and the most recent improvements to the vocoder. 2) Methods for transcoding between fixed rate and variable data rate vocoding modes. 3) Summary of heavily bit error protected, fixed-rate modes. C1 [Heide, David A.; Cohen, Aaron E.; Lee, Yvette T.; Moran, Thomas M.] US Naval Res Lab, Washington, DC 20375 USA. RP Heide, DA (reprint author), US Naval Res Lab, Washington, DC 20375 USA. OI Cohen, Aaron/0000-0002-1637-2103 NR 7 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-7695-5124-1 PY 2013 BP 702 EP 707 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BB8PB UT WOS:000347184000118 ER PT J AU Adamson, B Claypool, D AF Adamson, Brian Claypool, David GP IEEE TI Mobile Network Emulation - Experiences and Challenges SO 2013 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2013) LA English DT Proceedings Paper CT IEEE Military Communications Conference CY NOV 18-20, 2013 CL BAE Syst, San Diego, CA SP IEEE, IEEE Comp Soc, AFCEA, IEEE Commun Soc, MITRE HO BAE Syst DE wireless; mobile; network; modeling; emulation; simulation AB The development and use of emulation-based modeling of wireless, mobile network systems have matured during the past several years. This approach to experimentation has had several successful applications and a growing community of researchers has been collaborating to advance this technology. A number of challenges have been identified and a systems engineering approach is described to address these challenges. C1 [Adamson, Brian; Claypool, David] Naval Res Lab, Washington, DC 20375 USA. RP Adamson, B (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 14 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-7695-5124-1 PY 2013 BP 1081 EP 1086 DI 10.1109/MILCOM.2013.187 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BB8PB UT WOS:000347184000181 ER PT J AU Martin, J Rhame, D Beverly, R McEachen, J AF Martin, Jeremy Rhame, Danny Beverly, Robert McEachen, John GP IEEE TI Correlating GSM and 802.11 Hardware Identifiers SO 2013 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2013) LA English DT Proceedings Paper CT IEEE Military Communications Conference CY NOV 18-20, 2013 CL BAE Syst, San Diego, CA SP IEEE, IEEE Comp Soc, AFCEA, IEEE Commun Soc, MITRE HO BAE Syst AB The hardware identifiers of common wireless protocols can be exploited by adversaries for both tracking and physical device association. Rather than examining hardware identifiers in isolation, we observe that many modern devices are equipped with multiple wireless interfaces of different physical types, e. g. GSM and 802.11, suggesting that there exists utility in cross-protocol hardware identifier correlation. This research empirically examines the feasibility of such cross-protocol association, concentrating on correlating a GSM hardware identifier to that of the 802.11 hardware identifier on the same device. Our dataset includes 18 distinct mobile devices, with identifiers collected over time at disparate locations. We develop correlation techniques from the perspective of two adversaries: i) limited, able to observe identifiers only in time and space; and ii) a more advanced adversary with visibility into the data stream of each protocol. We first test correlation via temporal and spatial analysis using only basic signal collection, mimicking an RF collection with no decryption or data processing capability. Using a constrained optimization algorithm over temporal and spatial data to perform matching, we demonstrate increasing association accuracy over time, up to approximate to 80% in our experiments. Our second approach simulates the added capability to collect, decrypt, and reconstruct specific application protocol data, and parses the data of one protocol using search terms derived from the other. With the combined techniques, we achieve 100% accuracy and precision. C1 [Martin, Jeremy; Rhame, Danny; Beverly, Robert; McEachen, John] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Martin, J (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA. EM jbmartin@nps.edu; dsrhame@nps.edu; rbeverly@nps.edu; mceachen@nps.edu OI Beverly, Robert/0000-0002-5005-7350 NR 20 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-7695-5124-1 PY 2013 BP 1398 EP 1403 DI 10.1109/MILCOM.2013.237 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BB8PB UT WOS:000347184000232 ER PT J AU Nguyen, TD Gondree, MA Khosalim, J Irvine, CE AF Nguyen, Thuy D. Gondree, Mark A. Khosalim, Jean Irvine, Cynthia E. GP IEEE TI Towards A Cross-Domain MapReduce Framework SO 2013 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2013) LA English DT Proceedings Paper CT IEEE Military Communications Conference CY NOV 18-20, 2013 CL BAE Syst, San Diego, CA SP IEEE, IEEE Comp Soc, AFCEA, IEEE Commun Soc, MITRE HO BAE Syst DE MapReduce; Hadoop; cross-domain services; multilevel security AB The Apache (TM) Hadoop (R) framework provides parallel processing and distributed data storage capabilities that data analytics applications can utilize to process massive sets of raw data. These Big Data applications typically run as a set of MapReduce jobs to take advantage of Hadoop's ease of service deployment and large-scale parallelism. Yet, Hadoop has not been adapted for multilevel secure (MLS) environments where data of different security classifications co-exist. To solve this problem, we have used the Security Enhanced Linux (SELinux) Linux kernel extension in a prototype cross-domain Hadoop on which multiple instances of Hadoop applications run at different sensitivity levels. Their accesses to Hadoop resources are constrained by the underlying MLS policy enforcement mechanism. A benefit of our prototype is its extension of the Hadoop Distributed File System to provide a cross-domain read-down capability for Hadoop applications without requiring complex Hadoop server components to be trustworthy. C1 [Nguyen, Thuy D.; Gondree, Mark A.; Khosalim, Jean; Irvine, Cynthia E.] Naval Postgrad Sch, Dept Comp Sci, Monterey, CA 93943 USA. RP Nguyen, TD (reprint author), Naval Postgrad Sch, Dept Comp Sci, Monterey, CA 93943 USA. EM tdnguyen@nps.edu; mgondree@nps.edu; jkhosali@nps.edu; irvine@nps.edu NR 14 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-7695-5124-1 PY 2013 BP 1436 EP 1441 DI 10.1109/MILCOM.2013.243 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BB8PB UT WOS:000347184000238 ER PT J AU Trassare, ST Beverly, R Alderson, D AF Trassare, Samuel T. Beverly, Robert Alderson, David GP IEEE TI A Technique for Network Topology Deception SO 2013 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2013) LA English DT Proceedings Paper CT IEEE Military Communications Conference CY NOV 18-20, 2013 CL BAE Syst, San Diego, CA SP IEEE, IEEE Comp Soc, AFCEA, IEEE Commun Soc, MITRE HO BAE Syst AB Civilian and military networks are continually probed for vulnerabilities. Cyber criminals, and autonomous botnets under their control, regularly scan networks in search of vulnerable systems to co-opt. Military and more sophisticated adversaries may also scan and map networks as part of reconnaissance and intelligence gathering. This paper focuses on adversaries attempting to map a network's infrastructure, i.e., the critical routers and links supporting a network. We develop a novel methodology, rooted in principles of military deception, for deceiving a malicious traceroute probe and influencing the structure of the network as inferred by a mapping adversary. Our Linux-based implementation runs as a kernel module at a border router to present a deceptive external topology. We construct a proof-of-concept test network to show that a remote adversary using traceroute to map a defended network can be presented with a false topology of the defender's choice. C1 [Trassare, Samuel T.; Beverly, Robert; Alderson, David] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Trassare, ST (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA. EM sttrassa@nps.edu; rbeverly@nps.edu; dlalders@nps.edu OI Beverly, Robert/0000-0002-5005-7350 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 978-0-7695-5124-1 PY 2013 BP 1795 EP 1800 DI 10.1109/MILCOM.2013.303 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BB8PB UT WOS:000347184000298 ER PT S AU Boglione, L AF Boglione, Luciano GP IEEE TI A Novel Extraction Procedure to Determine the Noise Parameters of On-Wafer Devices SO 2013 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST (IMS) SE IEEE MTT-S International Microwave Symposium LA English DT Proceedings Paper CT IEEE MTT-S International Microwave Symposium Digest (IMS) CY JUN 02-07, 2013 CL Seattle, WA SP IEE MTT S ID TRANSISTOR NOISE; MODEL AB A new procedure for the extraction of noise parameters of on-wafer devices is presented and validated experimentally for the first time. The procedure is based on the noise figure measurement of similar devices of different size and biased at constant drain current density J(ds) and constant drain voltage V-ds. Key to its implementation is a scalable noise model. The model in use is the Pospieszalski noise model, based on the equivalent noise temperatures T-gs and T-ds, of the gate-source and the drain-source resistance, respectively. The new procedure also outlines a path towards the experimental validation of all the noise temperatures associated with the device's lossy elements. C1 [Boglione, Luciano] Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Boglione, L (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 11 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 978-1-4673-2141-9; 978-1-4673-6177-4 J9 IEEE MTT S INT MICR PY 2013 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BE2OX UT WOS:000369754300403 ER PT S AU Moon, JS Gaskill, K Asbeck, P AF Moon, Jeong-sun Gaskill, Kurt Asbeck, Peter GP IEEE TI Advances in Graphene-based High-dynamic-Range RF Electronics SO 2013 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST (IMS) SE IEEE MTT-S International Microwave Symposium LA English DT Proceedings Paper CT IEEE MTT-S International Microwave Symposium Digest (IMS) CY JUN 02-07, 2013 CL Seattle, WA SP IEE MTT S DE Graphene; Transistors; heterostructures; NEMS; linear mixers; detectors; mm-Wave; radiometers ID EPITAXIAL-GRAPHENE; TRANSISTORS AB We present recent progress in graphene material, graphene FETs, heterostructures, graphene NEMS, and potentially disruptive RF applications of GFETs such as linear mixers and high dynamic range radiometers. Continuous development of emerging graphene would potentially improve existing RF systems with integration with standard Si/III-V RFICs similar to DARPA heterogeneous integration (DAHI) efforts, and enable a new generation of high performance 3D-RFICs. C1 [Moon, Jeong-sun] HRL Labs, 3011 Malibu Canyon Rd, Malibu, CA 90265 USA. [Gaskill, Kurt] Naval Res Lab, Washington, DC 20375 USA. [Asbeck, Peter] Univ Calif San Diego, La Jolla, CA 92093 USA. RP Moon, JS (reprint author), HRL Labs, 3011 Malibu Canyon Rd, Malibu, CA 90265 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 0149-645X BN 978-1-4673-2141-9; 978-1-4673-6177-4 J9 IEEE MTT S INT MICR PY 2013 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BE2OX UT WOS:000369754300108 ER PT J AU Hutcheson, AL Phlips, EF Weber, BV Wulf, EA AF Hutcheson, Anthony L. Phlips, Ernard F. Weber, Bruce V. Wulf, Eric A. GP IEEE TI Active Interrogation of Shielded Fissionable Material using a Pulsed Bremsstrahlung Source SO 2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC) LA English DT Proceedings Paper CT 60th IEEE Nuclear Science Symposium (NSS) / Medical Imaging Conference (MIC) / 20th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 27-NOV 02, 2013 CL Seoul, SOUTH KOREA SP IEEE, Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc AB Passive detection of shielded special nuclear material (SNM) is a difficult problem, particularly at standoff distances. The SuperMISTI coded imaging and detection system was used with pulsed bremsstrahlung at the Hermes-III facility at Sandia National Laboratories to study active interrogation techniques as an alternative method of detecting shielded SNM. A combination of high-and low-Z shielding of varying thicknesses was used. Delayed gamma and neutron signatures were measured using NaI and He-3 detectors, and signal-to-background ratios were calculated. Experimental setup details and results will be presented. C1 [Hutcheson, Anthony L.; Phlips, Ernard F.; Wulf, Eric A.] US Naval Res Lab, High Energy Space Environm Branch, Washington, DC 20375 USA. [Weber, Bruce V.] US Navy, Res Lab, Washington, DC 20375 USA. RP Hutcheson, AL (reprint author), US Naval Res Lab, High Energy Space Environm Branch, Washington, DC 20375 USA. EM anthony.hutcheson@nrl.navy.mil FU Defense Threat Reduction Agency FX The authors of this work gratefully acknowledge the funding support from the Defense Threat Reduction Agency for this project. NR 6 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-0534-8 PY 2013 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied; Radiology, Nuclear Medicine & Medical Imaging SC Engineering; Physics; Radiology, Nuclear Medicine & Medical Imaging GA BB8OY UT WOS:000347163502107 ER PT J AU Woolf, RS Phlips, BF Hutcheson, AL Wulf, EA Zier, JC Jackson, SL Commisso, RJ Schumer, JW Clemett, C O'Malley, J Hill, C Maddock, R Martin, P Threadgold, J AF Woolf, Richard S. Phlips, Bernard F. Hutcheson, Anthony L. Wulf, Eric A. Zier, Jacob C. Jackson, Stuart L. Commisso, Robert J. Schumer, Joseph W. Clemett, Ceri O'Malley, John Hill, Cassie Maddock, Robert Martin, Philip Threadgold, Jim GP IEEE TI Pulsed Power Active Interrogation of Shielded Fissionable Material SO 2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC) LA English DT Proceedings Paper CT 60th IEEE Nuclear Science Symposium (NSS) / Medical Imaging Conference (MIC) / 20th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors CY OCT 27-NOV 02, 2013 CL Seoul, SOUTH KOREA SP IEEE, Inst Elect & Elect Engineers, Nucl & Plasma Sci Soc AB We report on a collaborative test campaign conducted at the Naval Research Laboratory's Mercury pulsed power facility in December of 2012. The experiment sought to use Mercury in the Intense Pulsed Active Detection (IPAD) [1] mode to interrogate a fissionable material target (depleted uranium, DU) and benchmark the effects of shielding the target with either a low-Z (2% borated high-density polyethylene, BPE) or high-Z (steel) material. A large suite of instrumentation, including He-3, BF3, NaI(Tl), and liquid scintillation detectors were used to measure the delayed. and neutron signatures from the DU. The test campaign consisted of a series of single IPAD pulses, i.e., "shots," employing incremental shielding configurations of BPE (up to 50 g/cm(2)) and steel (up to 150 g/cm(2)) encapsulating the DU target. We show the results from each detector array, for varying amounts of shielding, in terms of the signal-to-noise vs. time. C1 [Woolf, Richard S.; Phlips, Bernard F.; Hutcheson, Anthony L.; Wulf, Eric A.] US Naval Res Lab, Div Space Sci, Washington, DC 20375 USA. [Zier, Jacob C.; Jackson, Stuart L.; Commisso, Robert J.; Schumer, Joseph W.] US Naval Res Lab, Washington, DC 20375 USA. [Clemett, Ceri; O'Malley, John; Hill, Cassie; Maddock, Robert; Martin, Philip; Threadgold, Jim] AtomWeapons Estab, Nucl Secur Sci Grp, Reading RG7 4PR, Berks, England. RP Woolf, RS (reprint author), US Naval Res Lab, Div Space Sci, Washington, DC 20375 USA. EM richard.woolf.ctr@nrl.navy.mil 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 BN 978-1-4799-0534-8 PY 2013 PG 8 WC Engineering, Electrical & Electronic; Physics, Applied; Radiology, Nuclear Medicine & Medical Imaging SC Engineering; Physics; Radiology, Nuclear Medicine & Medical Imaging GA BB8OY UT WOS:000347163503163 ER PT S AU Weiblen, RJ Docherty, A Menyuk, CR Shaw, LB Sanghera, JS Aggarwal, ID AF Weiblen, R. J. Docherty, A. Menyuk, C. R. Shaw, L. B. Sanghera, J. S. Aggarwal, I. D. GP IEEE TI Efficient calculation of the mid-infrared supercontinuum spectrum in As2S3 photonic crystal fibers SO 2013 IEEE PHOTONICS CONFERENCE (IPC) SE IEEE Photonics Conference LA English DT Proceedings Paper CT 26th IEEE Photonics Conference (IPC) CY SEP 08-12, 2013 CL Bellevue, WA SP IEEE, Amer Chem Soc, Multidisciplinary Digital Publishing Inst, IEEE Cloud Comp, LioniX ID GENERATION; BANDWIDTH AB We develop a reduced model using 100 single-shot simulations for the output spectrum from a supercontinuum source using an As2S3 photonic crystal fiber that qualitatively matches the ensemble averaged spectrum expected in an experiment. C1 [Weiblen, R. J.; Docherty, A.; Menyuk, C. R.] Univ Maryland Baltimore Cty, Dept Comp Sci & Elect Engn, TRC 203,1000 Hilltop Circle, Baltimore, MD 21250 USA. [Shaw, L. B.; Sanghera, J. S.] Naval Res Lab, Washington, DC 20375 USA. [Aggarwal, I. D.] Sotera Def Solut, Crofton, MD 21114 USA. RP Weiblen, RJ (reprint author), Univ Maryland Baltimore Cty, Dept Comp Sci & Elect Engn, TRC 203,1000 Hilltop Circle, Baltimore, MD 21250 USA. EM ro2@umbc.edu 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 2374-0140 BN 978-1-4577-1507-5 J9 IEEE PHOTON CONF PY 2013 BP 400 EP 401 PG 2 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BE2RE UT WOS:000369918000201 ER PT S AU Pruessner, MW Park, D Stievater, TH Rabinovich, WS AF Pruessner, Marcel W. Park, Doewon Stievater, Todd H. Rabinovich, Williams S. GP IEEE TI A Low Mode Confinement Integrated Waveguide Platform for High Resolution Displacement Sensing SO 2013 IEEE SENSORS SE IEEE Sensors LA English DT Proceedings Paper CT 12th IEEE Sensors Conference CY NOV 03-06, 2013 CL Baltimore, MD SP IEEE, IEEE Sensors Council AB We demonstrate an integrated waveguide technology and apply it to displacement sensing. The waveguide consists of a 175 nm thick Si3N4 core layer with a 3,000 nm SiO2 bottom cladding and exhibits a large evanescent field. Although the nanophotonic waveguides feature sub-lambda/4 vertical confinement, they are fabrication tolerant with micron-scale lateral features. The technology enables complex photonic circuits without electron-beam lithography, which is commonly required for silicon nanophotonics. An unbalanced Mach-Zehnder interferometer is demonstrated in which the presence of an optical fiber near the waveguide surface induces a phase shift, which correlates with the fiber's position. We discuss future work and prospects for high-resolution displacement sensing. C1 [Pruessner, Marcel W.; Stievater, Todd H.; Rabinovich, Williams S.] Naval Res Lab, Div Opt Sci, Washington, DC 20375 USA. [Park, Doewon] Naval Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA. RP Pruessner, MW (reprint author), Naval Res Lab, Div Opt Sci, Washington, DC 20375 USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1930-0395 BN 978-1-4673-4642-9 J9 IEEE SENSOR PY 2013 BP 183 EP 186 PG 4 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF0XP UT WOS:000379846100048 ER PT S AU Snow, AW Ancona, MG AF Snow, Arthur W. Ancona, Mario G. GP IEEE TI Sensitivity, Selectivity and Nano-Dimensional Effects in Gold Nanocluster Vapor Sensors SO 2013 IEEE SENSORS SE IEEE Sensors LA English DT Proceedings Paper CT 12th IEEE Sensors Conference CY NOV 03-06, 2013 CL Baltimore, MD SP IEEE, IEEE Sensors Council ID SYSTEM AB A chemiresistor vapor sensor based on electron transport through an ensemble of ligand-stabilized gold nanoclusters is made exceptionally sensitive and selective by terminal carboxylic acid functionalization of the alkanethiol ligand. The directionality of the response (conductance increase or decrease) is strongly dependent on the nanoscale dimensions of the gold core and ligand shell thickness. Films of gold nanoclusters composed of a 2 nm metal core with a 0.5 nm -S(CH2)(5)COOH shell are compared to those based on an 8 nm core and a 1.5 nm -S(CH2)(15)COOH shell. Very strong and selective responses to amine vapors are observed but with a reversal of response in the direction of the conductance transduction. This unexpected result cannot be accommodated by known vapor response transduction mechanisms. A speculative new mechanism based on an ionic capacitance generated by the ligand-vapor interaction and confined to the outer surface fraction of the ligand shell is proposed. C1 [Snow, Arthur W.; Ancona, Mario G.] Naval Res Lab, Washington, DC 20375 USA. RP Snow, AW (reprint author), Naval Res Lab, Washington, DC 20375 USA. 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 1930-0395 BN 978-1-4673-4642-9 J9 IEEE SENSOR PY 2013 BP 733 EP 737 PG 5 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF0XP UT WOS:000379846100173 ER PT S AU Lou, JW Cranch, GA Miller, GA Kirkendall, CK AF Lou, Janet W. Cranch, Geoffrey A. Miller, Gary A. Kirkendall, Clay K. GP IEEE TI Miniaturization of Acoustic Vector Sensors Enabled by Viscous Fluids: Towards Fiber Laser Hair Sensors SO 2013 IEEE SENSORS SE IEEE Sensors LA English DT Proceedings Paper CT 12th IEEE Sensors Conference CY NOV 03-06, 2013 CL Baltimore, MD SP IEEE, IEEE Sensors Council AB We demonstrate a path towards the miniaturization of fiber-optic acoustic sensors based on simple cantilever designs. The reduction in response due to miniaturization is offset by the introduction of a viscous fluid around the cantilever, which changes the dominant driving force and introduces damping. This dramatically changes the response and enables responses 10 times greater than otherwise expected, as well as increased operating bandwidth. We show the performance of several different cantilever sensors and the effect of different viscous fluids on their acoustic response. Theoretical modeling results show excellent agreement with our measured data. C1 [Lou, Janet W.] Sotera Def Solut Inc, Mission Syst Div, Annapolis Jct, MD USA. [Cranch, Geoffrey A.; Miller, Gary A.; Kirkendall, Clay K.] Naval Res Lab, Opt Sci Div, Washington, DC 20375 USA. RP Lou, JW (reprint author), Sotera Def Solut Inc, Mission Syst Div, Annapolis Jct, MD USA. NR 6 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1930-0395 BN 978-1-4673-4642-9 J9 IEEE SENSOR PY 2013 BP 774 EP 777 PG 4 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF0XP UT WOS:000379846100183 ER PT S AU Rohrer, JP Xie, GG AF Rohrer, Justin P. Xie, Geoffrey G. GP IEEE TI DTN Hybrid Networks for Vehicular Communications SO 2013 INTERNATIONAL CONFERENCE ON CONNECTED VEHICLES AND EXPO (ICCVE) SE International Conference on Connected Vehicles and Expo LA English DT Proceedings Paper CT 2nd International Conference on Connected Vehicles and Expo (ICCVE) CY DEC 02-06, 2013 CL Las Vegas, NV SP IEEE USA, World Acad Connected Vehicles, SAE Int, Transportat Res Board, Transportat Res Board, Standing Comm Intelligent Transportat Syst, Transportat Res Board, Standing Comm Vehicle Highway Automat, Transportat Res Board, Policy & Org Grp, Int Federat Automat Control, Int Federat Automat Control, Tech Comm Comp Control, Int Federat Automat Control, Tech Comm Telemat Control Commun Networks, Int Federat Automat Control, Tech Comm Human Machine Syst, Int Federat Automat Control, Tech Comm Large Scale Complex Syst, Int Federat Automat Control, Tech Comm Power & Energy Syst, Int Federat Automat Control, Tech Comm Automot Control, Int Federat Automat Control, Tech Comm Transportat Syst, Int Federat Automat Control, Tech Comm Social Impact Automat, Assoc Comp Machinery, Assoc Comp Machinery, Special Interest Grp Spatial Informat, IEEE Stand Assoc, IEEE Commun Soc, IEEE Comp Soc, IEEE Consumer Elect Soc, IEEE Ind Elect Soc, IEEE Intelligent Transportat Syst Soc, IEEE Vehicular Technol Soc, IEEE Power & Energy Soc, IEEE Power Elect Soc, IEEE Electromagnet Compatibility Soc, IEEE Prod Safety Engn Soc, IEEE Reliabil Soc, IEEE Syst Council, IEEE RFID Comm ID AD HOC NETWORKS; TCP AB We present an architecture for combining two established network paradigms, IP and Disruption-Tolerant Networking (DTN), into a unified packet gateway design that leverages the advantages of both. Vehicular networking (VNET) scenarios often involve brittle links between communicating nodes due to their mobility. DTN solutions, by using a dynamic hop-by-hop delivery model instead of the end-to-end IP model, are able to sustain a large class of applications despite intermittent links. As a defining characteristic, our design is application-transparent in that it requires no changes to host applications (or the underlying host protocol stacks) in order for them to use DTN transport when IP is not feasible. In addition, we build into the architecture an explicit disruption notification service for keeping users informed as well preventing application time-outs during an IP outage. Finally, given the wide range of behaviors exhibited by applications that can benefit from DTN, our design supports the notion of an application lattice to allow operators to customize, on a per application/group/protocol basis, how the switch between IP and DTN and the disruption notification are performed. A preliminary evaluation based on a C++ proof-of-concept implementation has illustrated several potential benefits of the proposed architecture for VNET applications. C1 [Rohrer, Justin P.; Xie, Geoffrey G.] Naval Postgrad Sch, Dept Comp Sci, Grad Sch Operat & Informat Sci, Monterey, CA 93943 USA. RP Rohrer, JP (reprint author), Naval Postgrad Sch, Dept Comp Sci, Grad Sch Operat & Informat Sci, Monterey, CA 93943 USA. EM jprohrer@nps.edu; xie@nps.edu NR 26 TC 0 Z9 1 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2378-1289 BN 978-1-4799-2491-2 J9 INT CONF CONNECT VEH PY 2013 BP 114 EP 120 DI 10.1109/ICCVE.2013.25 PG 7 WC Engineering, Electrical & Electronic; Transportation Science & Technology SC Engineering; Transportation GA BC7JZ UT WOS:000354959800020 ER PT S AU Xing, DD Wan, H Zhu, MY Sanchez, SM Kaymal, T AF Xing, Dadi Wan, Hong Zhu, Michael Yu Sanchez, Susan M. Kaymal, Turgut GP IEEE TI SIMULATION SCREENING EXPERIMENTS USING LASSO-OPTIMAL SUPERSATURATED DESIGN AND ANALYSIS: A MARITIME OPERATIONS APPLICATION SO 2013 WINTER SIMULATION CONFERENCE (WSC) SE Winter Simulation Conference Proceedings LA English DT Proceedings Paper CT Winter Simulation Conference on Simulation - Making Decisions in a Complex World CY DEC 08-11, 2013 CL Washington, DC SP Assoc Comp Machinery, Special Interest Grp Simulat, Amer Stat Assoc, Arbeitsgemeinschaft Simulat, Inst Elect & Elect Engineers, Syst, Man, & Cybernet Soc, Inst Ind Engineers, Inst Operat Res & Management Sci, Simulat Soc, Natl Inst Stand & Technol, Soc Modeling & Simulat Int ID SELECTION; CONSTRUCTION; REGRESSION AB Screening methods are beneficial for studies involving simulations that have a large number of variables where a relatively small (but unknown) subset is important. In this paper, we show how a newly proposed Lasso-optimal screening design and analysis method can be useful for efficiently conducting simulation screening experiments. Our approach uses new criteria for generating supersaturated designs, and a new algorithm for selecting the optimal tuning parameters for Lasso model selection. We generate a 24x69 Lasso optimal supersaturated design, illustrate its potential with a numerical evaluation, and apply it to an agent-based simulation of maritime escort operations in the Strait of Gibraltar. This application is part of a larger project that seeks to leverage simulation models during the ship design process, and so construct ships that are both cost effective and operationally effective. The supersaturated screening design has already proved beneficial for model verification and validation. C1 [Xing, Dadi; Wan, Hong] Purdue Univ, Sch Ind Engn, W Lafayette, IN 47907 USA. [Zhu, Michael Yu] Purdue Univ, Dept Stat, W Lafayette, IN 47907 USA. [Sanchez, Susan M.; Kaymal, Turgut] Naval Postgrad Sch, Operat Res Dept, Monterey, CA 93943 USA. RP Xing, DD (reprint author), Purdue Univ, Sch Ind Engn, W Lafayette, IN 47907 USA. EM dxing@purdue.edu; hwan@purdue.edu; yuzhu@purdue.edu; ssanchez@nps.edu; turgutkaymal@gmail.com FU Office of Naval Research; U.S. Army Survivability and Lethality Analysis Directorate FX Susan M. Sanchez was supported in part by grants from the Office of Naval Research and the U.S. Army Survivability and Lethality Analysis Directorate. NR 26 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0891-7736 BN 978-1-4799-3950-3; 978-1-4799-2077-8 J9 WINT SIMUL C PROC PY 2013 BP 497 EP + PG 3 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BC0YO UT WOS:000349838400043 ER PT S AU Singham, DI Royset, JO Wets, RJB AF Singham, Dashi I. Royset, Johannes O. Wets, Roger J-B GP IEEE TI DENSITY ESTIMATION OF SIMULATION OUTPUT USING EXPONENTIAL EPI-SPLINES SO 2013 WINTER SIMULATION CONFERENCE (WSC) SE Winter Simulation Conference Proceedings LA English DT Proceedings Paper CT Winter Simulation Conference on Simulation - Making Decisions in a Complex World CY DEC 08-11, 2013 CL Washington, DC SP Assoc Comp Machinery, Special Interest Grp Simulat, Amer Stat Assoc, Arbeitsgemeinschaft Simulat, Inst Elect & Elect Engineers, Syst, Man, & Cybernet Soc, Inst Ind Engineers, Inst Operat Res & Management Sci, Simulat Soc, Natl Inst Stand & Technol, Soc Modeling & Simulat Int ID QUANTILE AB The density of stochastic simulation output provides more information on system performance than the mean alone. However, density estimation methods may require large sample sizes to achieve a certain accuracy or desired structural properties. A nonparametric estimation method based on exponential epi-splines has shown promise to overcome this difficulty by incorporating qualitative and quantitative information that reduces the space of possible density estimates substantially. Such 'soft' information may come in the form of the knowledge of a non-negative support, unimodality, and monotonicity, and is often available in simulation applications. We examine this method for output analysis of stochastic systems with fixed input parameters, and for a model with stochastic input parameters, with an emphasis on the use of derivative information. C1 [Singham, Dashi I.; Royset, Johannes O.] US Navy, Postgrad Sch, Dept Operat Res, Monterey, CA 93940 USA. RP Singham, DI (reprint author), US Navy, Postgrad Sch, Dept Operat Res, 1411 Cunningham Rd, Monterey, CA 93940 USA. EM dsingham@nps.edu; joroyset@nps.edu; rjbwets@ucdavis.edu NR 9 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0891-7736 BN 978-1-4799-3950-3; 978-1-4799-2077-8 J9 WINT SIMUL C PROC PY 2013 BP 755 EP 765 PG 11 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BC0YO UT WOS:000349838401005 ER PT S AU Sanchez, PJ White, KP AF Sanchez, Paul J. White, K. Preston, Jr. GP IEEE TI HAVE WE REALLY BEEN ANALYZING TERMINATING SIMULATIONS INCORRECTLY ALL THESE YEARS? SO 2013 WINTER SIMULATION CONFERENCE (WSC) SE Winter Simulation Conference Proceedings LA English DT Proceedings Paper CT Winter Simulation Conference on Simulation - Making Decisions in a Complex World CY DEC 08-11, 2013 CL Washington, DC SP Assoc Comp Machinery, Special Interest Grp Simulat, Amer Stat Assoc, Arbeitsgemeinschaft Simulat, Inst Elect & Elect Engineers, Syst, Man, & Cybernet Soc, Inst Ind Engineers, Inst Operat Res & Management Sci, Simulat Soc, Natl Inst Stand & Technol, Soc Modeling & Simulat Int AB We all know how to estimate a confidence interval for the mean based on a random sample. The interval is centered on the sample mean, with the half-width proportional to the sample standard error. We know also that terminating simulations generate independent observations. What simulators appear to have overlooked is that independence alone is insufficient to guarantee a valid random sample-the observations must also be identically distributed. This is a good assumption if the outcome of each replication is a single observation, but it is demonstrably incorrect if the outcome is an aggregate value and the replications have differing numbers of observations. In this paper we explore the implications of this oversight when within-replication observations are independent. We then derive analytic results showing that although the impact on interval estimates can sometimes be negligible, there also are circumstances where the variance of our estimates is significantly increased. We finish with a simple example which demonstrates the potential impact for practitioners. C1 [Sanchez, Paul J.] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Sanchez, PJ (reprint author), Naval Postgrad Sch, 1411 Cunningham Rd, Monterey, CA 93943 USA. EM pjsanche@nps.edu; kpwhite@virginia.edu 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 0891-7736 BN 978-1-4799-3950-3; 978-1-4799-2077-8 J9 WINT SIMUL C PROC PY 2013 BP 814 EP 820 PG 7 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BC0YO UT WOS:000349838401010 ER PT J AU Tetlow, MR Howard, CQ Green, JM AF Tetlow, M. R. Howard, C. Q. Green, J. M. BE Piantadosi, J Anderssen, RS Boland, J TI Integrated Submarine Performance Simulation SO 20TH INTERNATIONAL CONGRESS ON MODELLING AND SIMULATION (MODSIM2013) LA English DT Proceedings Paper CT 20th International Congress on Modelling and Simulation (MODSIM) CY DEC 01-06, 2013 CL Adelaide, AUSTRALIA SP CSIRO, Univ S Australia, Ctr Ind & Appl Math, Australian Govt, Bur Meteorol, GOYDER Inst, Govt S Australia, Australian Math Soc, Australian Math Sci Inst, Simulat Australia, Australian & New Zealand Ind & Appl Math DE Submarine; Simulation AB The procurement planning for high value assets, such as submarines, naval surface ships, aircraft, etc. requires rigorous analysis to ensure that the operation of the platform and its sub-systems meet the capability requirements, based on measures of performance. Measures of performance are identified and defined in a capability analysis, which is not in the scope of the present study. Once the measures of performance have been established, a submarine simulation model can be used to assess the performance of a given design against the measures of performance. Subject matter experts are able to develop high fidelity models of submarine performance and operations. An efficient way to integrate these high fidelity models, to develop a whole-of-submarine simulation model, is to use an integration tool such as Phoenix Integration Model Center. This integrated tool can be used to perform analysis and parameter sensitivity studies to provide a better understanding of the design space. In this paper, a submarine simulation model is developed, using Phoenix Integration Model Center, based on sub-system models developed by subject matter experts. The software tool is validated by comparing the designs to several previous designs described in the public literature. The tool is then applied to a case study, showing the relationship between the weight of a submarine, the number of crew members and the length of its mission in days. The results show a large growth in submarine weight with increasing crew numbers, and a moderate growth in weight with increased mission duration. C1 [Tetlow, M. R.; Howard, C. Q.] Univ Adelaide, Adelaide, SA, Australia. [Green, J. M.] Naval Postgrad Sch, Monterey, CA USA. RP Tetlow, MR (reprint author), Univ Adelaide, Adelaide, SA, Australia. EM matthew.tetlow@adelaide.edu.au NR 13 TC 0 Z9 0 U1 1 U2 1 PU MODELLING & SIMULATION SOC AUSTRALIA & NEW ZEALAND INC PI CHRISTCHURCH PA MSSANZ, CHRISTCHURCH, 00000, NEW ZEALAND BN 978-0-9872143-3-1 PY 2013 BP 1075 EP 1081 PG 7 WC Computer Science, Interdisciplinary Applications; Operations Research & Management Science; Mathematics, Interdisciplinary Applications SC Computer Science; Operations Research & Management Science; Mathematics GA BD0EH UT WOS:000357105901015 ER PT J AU Roberts, B Owen, W AF Roberts, B. Owen, W. BE Chova, LG Martinez, AL Torres, IC TI DISTANCE EDUCATION LESSONS LEARNED PROVIDE FRAMEWORK FOR IMPROVED RESIDENT INSTRUCTION SO 6TH INTERNATIONAL CONFERENCE OF EDUCATION, RESEARCH AND INNOVATION (ICERI 2013) LA English DT Proceedings Paper CT 6th International Conference on Education, Research and Innovation (ICERI) CY NOV 18-20, 2013 CL Seville, SPAIN DE Distance Education; e-learning; Lessons Learned C1 [Roberts, B.; Owen, W.] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Roberts, B (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IATED-INT ASSOC TECHNOLOGY EDUCATION A& DEVELOPMENT PI VALENICA PA LAURI VOLPI 6, VALENICA, BURJASSOT 46100, SPAIN BN 978-84-616-3847-5 PY 2013 BP 6891 EP 6891 PG 1 WC Education & Educational Research SC Education & Educational Research GA BE8BW UT WOS:000376253200139 ER PT S AU Euske, KJ Malina, MA AF Euske, K. J. Malina, Mary A. BE Epstein, MJ Lee, JY TI TRANSFER OF PERFORMANCE MEASUREMENT SYSTEM INNOVATIONS ACROSS ECONOMIC SECTORS SO ADVANCES IN MANAGEMENT ACCOUNTING SE Advances in Management Accounting LA English DT Article; Book Chapter DE Activity-based costing; balanced scorecard; performance measurement system; transfer of ideas; economic sectors ID KNOWLEDGE; DYNAMICS AB Purpose - This chapter studies the transfer of performance measurement system (PMS) innovations across the three sectors of the economy: private, public, and nonprofit. Methodology/approach - The spread of organizational innovations and learning from best practices is slow and complicated (Lillrank, 1995). Based on differences in languages used by writers and readers and differences in employee characteristics among the three sectors as well as cognitive biases, we expect the transfer of PMS innovations to be easier within sectors than across sectors. We use the frequency and timing of journal articles written about activity-based costing and the balanced scorecard as a proxy for the actual transfer of the innovations within and across economic sectors. Findings - Our empirical results indicate that the transfer of the ideas across economic sectors does not happen as quickly as the transfer of the ideas within sectors. We provide evidence that it is the practitioners, not the academics, who lead the transfer of ideas in the open literature from one sector to another. Viewing a sector as unique limits the applicability of available solutions and applications, thereby inhibits useful change. Originality/value of paper - By focusing on differences, the exchange of ideas and techniques among the three economic sectors can be hindered. C1 [Euske, K. J.] Naval Postgrad Sch, Monterey, CA 93943 USA. [Malina, Mary A.] Univ Colorado Denver, Denver, CO USA. RP Euske, KJ (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA. NR 47 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND SN 1474-7871 BN 978-1-78190-843-3; 978-1-78190-842-6 J9 ADV MANAG ACCOUNT PY 2013 VL 22 BP 25 EP 42 DI 10.1108/S1474-7871(2013)0000022007 PG 18 WC Business, Finance; Management SC Business & Economics GA BD1XR UT WOS:000358493300003 ER PT B AU Boudreaux-Bartels, GF Murray, R AF Boudreaux-Bartels, G. Faye Murray, Robin BE Liang, H Bronzino, JD Peterson, DR TI Time-Frequency Signal Representations for Biomedical Signals SO BIOSIGNAL PROCESSING: PRINCIPLES AND PRACTICES LA English DT Article; Book Chapter ID WAVELET TRANSFORM; SPECTROGRAM CORRELATION; DISTRIBUTIONS; RECEIVER C1 [Boudreaux-Bartels, G. Faye; Murray, Robin] Univ Rhode Isl, Dept Elect Comp & Biomed Engn, Kingston, RI 02881 USA. [Murray, Robin] Naval Undersea Warfare Ctr, Environm & Target Phys, Newport, RI USA. RP Boudreaux-Bartels, GF (reprint author), Univ Rhode Isl, Dept Elect Comp & Biomed Engn, Kingston, RI 02881 USA. NR 49 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 978-1-4398-7144-7; 978-1-4398-7143-0 PY 2013 PG 24 WC Engineering, Biomedical; Neurosciences; Imaging Science & Photographic Technology SC Engineering; Neurosciences & Neurology; Imaging Science & Photographic Technology GA BD3ZF UT WOS:000360358200003 ER PT J AU Kumar, A Chakraborty, A Crider, BP Mcellistrem, MT Peters, EE Prados-Estevez, FM Yates, SW Hicks, SF Kersting, LJ Luke, CJ McDonough, PJ Sigillito, AJ Vanhoy, JR AF Kumar, A. Chakraborty, A. Crider, B. P. Mcellistrem, M. T. Peters, E. E. Prados-Estevez, F. M. Yates, S. W. Hicks, S. F. Kersting, L. J. Luke, C. J. McDonough, P. J. Sigillito, A. J. Vanhoy, J. R. BE Garrett, PE Hadinia, B TI MEASUREMENT OF THE ABSOLUTE ELASTIC AND INELASTIC DIFFERENTIAL NEUTRON CROSS SECTIONS FOR Na-23 BETWEEN 2 AND 4 MeV SO CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS LA English DT Proceedings Paper CT 14th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS) CY AUG 28-SEP 02, 2011 CL Univ Guelph, Guelph, CANADA HO Univ Guelph AB Elastic and inelastic neutron scattering angular distributions have been measured from Na-23 for incident neutron energies between 2 and 4 MeV at the University of Kentucky using neutron time-of-flight techniques. The cross sections obtained are important for applications in nuclear reactor development and other areas, and they are an energy region in which existing data are very sparse. Absolute cross sections were obtained by normalizing Na angular distributions to the well-known np cross sections. C1 [Kumar, A.; Chakraborty, A.; Crider, B. P.; Mcellistrem, M. T.; Yates, S. W.] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA. [Peters, E. E.; Yates, S. W.] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA. [Hicks, S. F.; Kersting, L. J.; Luke, C. J.; McDonough, P. J.; Sigillito, A. J.] Univ Dallas, Dept Phys, Irving, TX 75062 USA. [Vanhoy, J. R.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA. EM ajaytyagi@uky.edu; anagha@pa.uky.edu; ben.crider@uky.edu; fe.peters@uky.edu; francisco.prados-estevez@uky.edu; yates@uky.edu; hicks@udallas.edu; vanhoy@usna.edu FU U.S. DOE [DE-AC07-051D14517] FX This work is supported by the U.S. DOE contract no. DE-AC07-051D14517. NR 4 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-4383-63-9 PY 2013 BP 254 EP 259 PG 6 WC Physics, Nuclear SC Physics GA BG8QS UT WOS:000392645700035 ER PT J AU Bianco, L Garrett, PE Sharpey-Schafer, F Barks, RA Bvumbi, SP Lawrie, EA Lawrie, JJ Madiba, TE Mullins, SM Papka, P Roux, DG Minkova, A Dombradi, Z Nyako, BM Timar, J Juhaz, K Korichi, A Curien, D Dudeck, J Riley, MA Wang, X Riedinger, LL Simpson, J Hartley, DJ Kulp, WD Wood, JL Kondev, FG Sletten, GS Ragnarsson, I AF Bianco, L. Garrett, P. E. Sharpey-Schafer, F. Barks, R. A. Bvumbi, S. P. Lawrie, E. A. Lawrie, J. J. Madiba, T. E. Mullins, S. M. Papka, P. Roux, D. G. Minkova, A. Dombradi, Z. Nyako, B. M. Timar, J. Juhaz, K. Korichi, A. Curien, D. Dudeck, J. Riley, M. A. Wang, X. Riedinger, L. L. Simpson, J. Hartley, D. J. Kulp, W. D. Wood, J. L. Kondev, F. G. Sletten, G. S. Ragnarsson, I. BE Garrett, PE Hadinia, B TI GAMMA SPECTROSCOPY OF Sm-150 SO CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS LA English DT Proceedings Paper CT 14th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS) CY AUG 28-SEP 02, 2011 CL Univ Guelph, Guelph, CANADA HO Univ Guelph ID TRANSITIONAL NUCLEI; T REACTIONS; ISOTOPES; STATES; SM AB The N=88 nucleus Sm-150 has been produced during the Nd-148(alpha,2n)Sm-150 reaction at the Accelerator Laboratory of the University of Jyvaskyla, Finland. Nuclei around the N=90 are considered transitional nuclei, since they lie in a region between lighter nuclei which display vibrational-like spectra and heavier isotopes with a rotational-like structure. The structure of this transitional nuclei and in particular the structure of low-lying excited states still poses some question, and in particular more experimental data are required to investigate their non-yrast collective structures. Some preliminary results which include the placing of new levels and a new positive parity band will be presented. C1 [Bianco, L.; Garrett, P. E.] Univ Guelph, Guelph, ON N1G 2W1, Canada. [Sharpey-Schafer, F.; Bvumbi, S. P.; Roux, D. G.] Univ Western Cape, Bellville, South Africa. [Sharpey-Schafer, F.; Barks, R. A.; Lawrie, E. A.; Lawrie, J. J.; Mullins, S. M.; Papka, P.] Univ Zululand, Kwa Zulu, South Africa. [Minkova, A.] iThemba Lab Accelerator Based Sci, Somerset West, South Africa. [Dombradi, Z.; Nyako, B. M.; Timar, J.] Bulgarian Acad Sci, INRNE, Sofia, Bulgaria. [Juhaz, K.] ATOMKI, Debrecen, Hungary. [Korichi, A.] Univ Debrecen, Debrecen, Hungary. [Curien, D.; Dudeck, J.] CSNSM, Orsay, France. [Riley, M. A.; Wang, X.] FSU, Tallahassee, FL USA. [Riedinger, L. L.; Simpson, J.] Daresbury Lab, Warrington, Cheshire, England. [Kulp, W. D.; Wood, J. L.] US Naval Acad, Annapolis, MD 21402 USA. [Kondev, F. G.; Sletten, G. S.] ANL, Lemont, IL USA. [Ragnarsson, I.] NBI, Copenhagen, Denmark. EM lbianco@uoguelph.ca; pgarrett@physics.uoguelph.ca; kondev@anl.gov NR 19 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-4383-63-9 PY 2013 BP 591 EP 595 PG 5 WC Physics, Nuclear SC Physics GA BG8QS UT WOS:000392645700083 ER PT S AU Arnold, A Giesbrecht, M Roche, DS AF Arnold, Andrew Giesbrecht, Mark Roche, Daniel S. BE Gerdt, VP Koepf, W Mayr, EW Vorozhtsov, EV TI Faster Sparse Interpolation of Straight-Line Programs SO COMPUTER ALGEBRA IN SCIENTIFIC COMPUTING, CASC 2013 SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 15th International Workshop on Computer Algebra in Scientific Computing (CASC) CY SEP 09-13, 2013 CL Berlin, GERMANY SP Tech Univ Munchen, Dept Informat, Konrad Zuse Zentrum Informationstechnik Berlin, Deutsche Forschungsgemeinschaft ID POLYNOMIALS AB We give a new probabilistic algorithm for interpolating a "sparse" polynomial f given by a straight-line program. Our algorithm constructs an approximation f* of f, such that f-f* probably has at most half the number of terms of f, then recurses on the difference f-f*. Our approach builds on previous work by Garg and Schost (2009), and Giesbrecht and Roche (2011), and is asymptotically more efficient in terms of the total cost of the probes required than previous methods, in many cases. C1 [Arnold, Andrew; Giesbrecht, Mark] Univ Waterloo, Cheriton Sch Comp Sci, Waterloo, ON N2L 3G1, Canada. [Roche, Daniel S.] US Naval Acad, Annapolis, MD 21402 USA. RP Arnold, A (reprint author), Univ Waterloo, Cheriton Sch Comp Sci, Waterloo, ON N2L 3G1, Canada. EM a4arnold@uwaterloo.ca; mwg@uwaterloo.ca; roche@usna.edu NR 15 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-319-02297-0; 978-3-319-02296-3 J9 LECT NOTES COMPUT SC PY 2013 VL 8136 BP 61 EP 74 PG 14 WC Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BD0ML UT WOS:000357392100005 ER PT S AU Heidenkamp, H Louth, J Taylor, T AF Heidenkamp, Henrik Louth, John Taylor, Trevor BA Heidenkamp, H Louth, J Taylor, T BF Heidenkamp, H Louth, J Taylor, T TI THE DEFENCE INDUSTRIAL TRIPTYCH GOVERNMENT AS CUSTOMER, SPONSOR AND REGULATOR FOREWORD SO DEFENCE INDUSTRIAL TRIPTYCH: GOVERNMENT AS CUSTOMER, SPONSOR AND REGULATOR SE Whitehall Paper LA English DT Editorial Material; Book Chapter C1 [Heidenkamp, Henrik; Taylor, Trevor] RUSI, DISP, London, England. RUSI Univ Roehampton, Sch Business, PhD Programme, London, England. [Louth, John] RUSI, Def Ind & Soc, London, England. [Louth, John] Royal Air Force, London, England. [Louth, John] Commons Def Select Comm, London, England. [Louth, John] Roehampton Univ, Sch Business, London, England. [Taylor, Trevor] Cranfield Univ, Def Acad, Cranfield MK43 0AL, Beds, England. [Taylor, Trevor] Naval Postgrad Sch, Monterey, CA USA. [Taylor, Trevor] Royal Inst Int Affairs, Int Secur Programme, London, England. RP Heidenkamp, H (reprint author), RUSI, DISP, London, England. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ROUTLEDGE PI ABINGDON PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND SN 0268-1307 BN 978-1-317-68689-7; 978-1-138-02358-1 J9 WHITEHALL PAP PY 2013 VL 81 BP 1 EP 2 PG 2 WC Business; Political Science; Public Administration SC Business & Economics; Government & Law; Public Administration GA BF6XC UT WOS:000383746300001 ER PT S AU Heidenkamp, H Louth, J Taylor, T AF Heidenkamp, Henrik Louth, John Taylor, Trevor BA Heidenkamp, H Louth, J Taylor, T BF Heidenkamp, H Louth, J Taylor, T TI THE DEFENCE INDUSTRIAL TRIPTYCH GOVERNMENT AS CUSTOMER, SPONSOR AND REGULATOR INTRODUCTION SO DEFENCE INDUSTRIAL TRIPTYCH: GOVERNMENT AS CUSTOMER, SPONSOR AND REGULATOR SE Whitehall Paper LA English DT Editorial Material; Book Chapter C1 [Heidenkamp, Henrik; Taylor, Trevor] RUSI, DISP, London, England. RUSI Univ Roehampton, Sch Business, PhD Programme, London, England. [Louth, John] RUSI, Def Ind & Soc, London, England. [Louth, John] Royal Air Force, London, England. [Louth, John] Commons Def Select Comm, London, England. [Louth, John] Roehampton Univ, Sch Business, London, England. [Taylor, Trevor] Cranfield Univ, Def Acad, Cranfield MK43 0AL, Beds, England. [Taylor, Trevor] Naval Postgrad Sch, Monterey, CA USA. [Taylor, Trevor] Royal Inst Int Affairs, Int Secur Programme, London, England. RP Heidenkamp, H (reprint author), RUSI, DISP, London, England. NR 9 TC 0 Z9 0 U1 0 U2 0 PU ROUTLEDGE PI ABINGDON PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND SN 0268-1307 BN 978-1-317-68689-7; 978-1-138-02358-1 J9 WHITEHALL PAP PY 2013 VL 81 BP 3 EP 15 PG 13 WC Business; Political Science; Public Administration SC Business & Economics; Government & Law; Public Administration GA BF6XC UT WOS:000383746300002 ER PT S AU Heidenkamp, H Louth, J Taylor, T AF Heidenkamp, Henrik Louth, John Taylor, Trevor BA Heidenkamp, H Louth, J Taylor, T BF Heidenkamp, H Louth, J Taylor, T TI GOVERNMENTS AS CUSTOMERS OF DEFENCE INDUSTRIES SO DEFENCE INDUSTRIAL TRIPTYCH: GOVERNMENT AS CUSTOMER, SPONSOR AND REGULATOR SE Whitehall Paper LA English DT Article; Book Chapter C1 [Heidenkamp, Henrik; Taylor, Trevor] RUSI, DISP, London, England. RUSI Univ Roehampton, Sch Business, PhD Programme, London, England. [Louth, John] RUSI, Def Ind & Soc, London, England. [Louth, John] Royal Air Force, London, England. [Louth, John] Commons Def Select Comm, London, England. [Louth, John] Roehampton Univ, Sch Business, London, England. [Taylor, Trevor] Cranfield Univ, Def Acad, Cranfield MK43 0AL, Beds, England. [Taylor, Trevor] Naval Postgrad Sch, Monterey, CA USA. [Taylor, Trevor] Royal Inst Int Affairs, Int Secur Programme, London, England. RP Heidenkamp, H (reprint author), RUSI, DISP, London, England. NR 52 TC 0 Z9 0 U1 0 U2 0 PU ROUTLEDGE PI ABINGDON PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND SN 0268-1307 BN 978-1-317-68689-7; 978-1-138-02358-1 J9 WHITEHALL PAP PY 2013 VL 81 BP 16 EP 60 PG 45 WC Business; Political Science; Public Administration SC Business & Economics; Government & Law; Public Administration GA BF6XC UT WOS:000383746300003 ER PT S AU Heidenkamp, H Louth, J Taylor, T AF Heidenkamp, Henrik Louth, John Taylor, Trevor BA Heidenkamp, H Louth, J Taylor, T BF Heidenkamp, H Louth, J Taylor, T TI THE STATE-DEFENCE INDUSTRIAL RELATIONSHIP: GOVERNMENT AS SPONSOR SO DEFENCE INDUSTRIAL TRIPTYCH: GOVERNMENT AS CUSTOMER, SPONSOR AND REGULATOR SE Whitehall Paper LA English DT Article; Book Chapter C1 [Heidenkamp, Henrik; Taylor, Trevor] RUSI, DISP, London, England. RUSI Univ Roehampton, Sch Business, PhD Programme, London, England. [Louth, John] RUSI, Def Ind & Soc, London, England. [Louth, John] Royal Air Force, London, England. [Louth, John] Commons Def Select Comm, London, England. [Louth, John] Roehampton Univ, Sch Business, London, England. [Taylor, Trevor] Cranfield Univ, Def Acad, Cranfield MK43 0AL, Beds, England. [Taylor, Trevor] Naval Postgrad Sch, Monterey, CA USA. [Taylor, Trevor] Royal Inst Int Affairs, Int Secur Programme, London, England. RP Heidenkamp, H (reprint author), RUSI, DISP, London, England. NR 45 TC 1 Z9 1 U1 0 U2 0 PU ROUTLEDGE PI ABINGDON PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND SN 0268-1307 BN 978-1-317-68689-7; 978-1-138-02358-1 J9 WHITEHALL PAP PY 2013 VL 81 BP 61 EP 97 PG 37 WC Business; Political Science; Public Administration SC Business & Economics; Government & Law; Public Administration GA BF6XC UT WOS:000383746300004 ER PT S AU Heidenkamp, H Louth, J Taylor, T AF Heidenkamp, Henrik Louth, John Taylor, Trevor BA Heidenkamp, H Louth, J Taylor, T BF Heidenkamp, H Louth, J Taylor, T TI THE REGULATION AND CONTROL OF DEFENCE BUSINESSES SO DEFENCE INDUSTRIAL TRIPTYCH: GOVERNMENT AS CUSTOMER, SPONSOR AND REGULATOR SE Whitehall Paper LA English DT Article; Book Chapter C1 [Heidenkamp, Henrik; Taylor, Trevor] RUSI, DISP, London, England. RUSI Univ Roehampton, Sch Business, PhD Programme, London, England. [Louth, John] RUSI, Def Ind & Soc, London, England. [Louth, John] Royal Air Force, London, England. [Louth, John] Commons Def Select Comm, London, England. [Louth, John] Roehampton Univ, Sch Business, London, England. [Taylor, Trevor] Cranfield Univ, Def Acad, Cranfield MK43 0AL, Beds, England. [Taylor, Trevor] Naval Postgrad Sch, Monterey, CA USA. [Taylor, Trevor] Royal Inst Int Affairs, Int Secur Programme, London, England. RP Heidenkamp, H (reprint author), RUSI, DISP, London, England. NR 40 TC 0 Z9 0 U1 0 U2 0 PU ROUTLEDGE PI ABINGDON PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND SN 0268-1307 BN 978-1-317-68689-7; 978-1-138-02358-1 J9 WHITEHALL PAP PY 2013 VL 81 BP 98 EP 137 PG 40 WC Business; Political Science; Public Administration SC Business & Economics; Government & Law; Public Administration GA BF6XC UT WOS:000383746300005 ER PT S AU Heidenkamp, H Louth, J Taylor, T AF Heidenkamp, Henrik Louth, John Taylor, Trevor BA Heidenkamp, H Louth, J Taylor, T BF Heidenkamp, H Louth, J Taylor, T TI IMPLICATIONS OF THE GOVERNMENT-DEFENCE INDUSTRY RELATIONSHIP SO DEFENCE INDUSTRIAL TRIPTYCH: GOVERNMENT AS CUSTOMER, SPONSOR AND REGULATOR SE Whitehall Paper LA English DT Article; Book Chapter C1 [Heidenkamp, Henrik; Taylor, Trevor] RUSI, DISP, London, England. RUSI Univ Roehampton, Sch Business, PhD Programme, London, England. [Louth, John] RUSI, Def Ind & Soc, London, England. [Louth, John] Royal Air Force, London, England. [Louth, John] Commons Def Select Comm, London, England. [Louth, John] Roehampton Univ, Sch Business, London, England. [Taylor, Trevor] Cranfield Univ, Def Acad, Cranfield MK43 0AL, Beds, England. [Taylor, Trevor] Naval Postgrad Sch, Monterey, CA USA. [Taylor, Trevor] Royal Inst Int Affairs, Int Secur Programme, London, England. RP Heidenkamp, H (reprint author), RUSI, DISP, London, England. NR 21 TC 0 Z9 0 U1 0 U2 0 PU ROUTLEDGE PI ABINGDON PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND SN 0268-1307 BN 978-1-317-68689-7; 978-1-138-02358-1 J9 WHITEHALL PAP PY 2013 VL 81 BP 138 EP 152 PG 15 WC Business; Political Science; Public Administration SC Business & Economics; Government & Law; Public Administration GA BF6XC UT WOS:000383746300006 ER PT S AU Insler, M Compton, J Schmitt, P AF Insler, Michael Compton, James Schmitt, Pamela BE Collins, SM Isaac, RM Norton, DA TI DOES EVERYONE ACCEPT A FREE LUNCH? DECISION-MAKING UNDER (ALMOST) ZERO-COST BORROWING SO EXPERIMENTS IN FINANCIAL ECONOMICS SE Research in Experimental Economics LA English DT Article; Book Chapter DE Survey methods; behavioral economics; personal finance; investment decisions ID STUDENTS AB Purpose - This chapter examines the debt aversion of a group of college students who have the opportunity to take out a sizable, low-interest, non-credit dependent loan. If the loan is simply invested in low-risk assets, it would effectively yield a free lunch in net interest earnings. Methodology - The research uses survey data to examine demographic, socio-economic, personality traits, and other characteristics of those willing and unwilling to accept the loan offer, as well as their intentions of early repayment. Findings - Individuals willing to accept the loan tend to have prior debt, longer planning horizons, come from middle-income families, and may have higher cognitive ability. Anticipated early repayment of the loan is more likely among those with prior investments, no prior debt, from STEM majors, with upper income parents, and those who expect to buy a home soon. Research limitations/implications - We find no consistent relationships between debt aversion and intellectual ability or gender, but this finding may be hampered by our small sample of female loan-rejecters. Our limited sample size also precludes examining interactions between the dimensions of personality types. Originality - We suggest consideration of policies to encourage "smart" borrowing, focusing on the financially disadvantaged, particularly for education loans. This study examines a uniquely occurring natural experiment regarding the opportunity to accept a non-credit dependent loan. Our results describe the behavior of young adults, an infrequently studied yet important segment of the population, especially in the context of borrowing behavior. C1 [Insler, Michael; Schmitt, Pamela] US Naval Acad, Annapolis, MD 21402 USA. [Compton, James] US Navy, Annapolis, MD USA. RP Insler, M (reprint author), US Naval Acad, Annapolis, MD 21402 USA. NR 23 TC 1 Z9 1 U1 1 U2 1 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND SN 0193-2306 BN 978-1-78350-141-0; 978-1-78350-140-3 J9 RES EXP ECON PY 2013 VL 16 BP 145 EP 170 DI 10.1108/S0193-2306(2013)0000016007 PG 26 WC Business, Finance; Economics SC Business & Economics GA BD1TE UT WOS:000358349900007 ER PT B AU Walwanis, MM Swanson, BL Atkinson, BFW AF Walwanis, Melissa M. Swanson, Brandy L. Atkinson, Beth F. Wheeler BE Best, C Galanis, G Kerry, J Sottilare, R TI The Role of Instructor Operator Stations in Training SO FUNDAMENTAL ISSUES IN DEFENSE TRAINING AND SIMULATION SE Human Factors in Defence LA English DT Article; Book Chapter ID TECHNOLOGY C1 [Walwanis, Melissa M.; Atkinson, Beth F. Wheeler] Naval Air Warfare Ctr, Training Syst Div, Patuxent River, MD 20670 USA. [Swanson, Brandy L.] Kaegan Corp, Orlando, FL USA. RP Walwanis, MM (reprint author), Naval Air Warfare Ctr, Training Syst Div, Patuxent River, MD 20670 USA. NR 30 TC 0 Z9 0 U1 0 U2 0 PU ASHGATE PUBLISHING LTD PI ALDERSHOT PA GOWER HOUSE, CROFT ROAD, ALDERSHOT GU11 3HR, ENGLAND BN 978-1-4094-4722-1; 978-1-4094-4721-4 J9 HUM FACT DEFENCE PY 2013 BP 179 EP 191 PG 13 WC Social Sciences, Interdisciplinary SC Social Sciences - Other Topics GA BC4CY UT WOS:000352310800016 ER PT B AU Atkinson, BFW Abbott, RG Merket, DC AF Atkinson, Beth F. Wheeler Abbott, Robert G. Merket, Danielle C. BE Best, C Galanis, G Kerry, J Sottilare, R TI Measuring Up: Benefits and Trends in Performance Measurement Technologies SO FUNDAMENTAL ISSUES IN DEFENSE TRAINING AND SIMULATION SE Human Factors in Defence LA English DT Article; Book Chapter C1 [Atkinson, Beth F. Wheeler] Naval Air Warfare Ctr, Training Syst Div, Patuxent River, MD 20670 USA. [Abbott, Robert G.] Sandia Natl Labs, Livermore, CA 94550 USA. [Merket, Danielle C.] Naval Surface Warfare Ctr, Patuxent River, MD USA. RP Atkinson, BFW (reprint author), Naval Air Warfare Ctr, Training Syst Div, Patuxent River, MD 20670 USA. NR 42 TC 0 Z9 0 U1 0 U2 0 PU ASHGATE PUBLISHING LTD PI ALDERSHOT PA GOWER HOUSE, CROFT ROAD, ALDERSHOT GU11 3HR, ENGLAND BN 978-1-4094-4722-1; 978-1-4094-4721-4 J9 HUM FACT DEFENCE PY 2013 BP 285 EP 296 PG 12 WC Social Sciences, Interdisciplinary SC Social Sciences - Other Topics GA BC4CY UT WOS:000352310800025 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Definition of a Game SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 1 EP 12 PG 12 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000002 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI GAME THEORY FOURTH EDITION Preface SO GAME THEORY, 4TH EDITION LA English DT Editorial Material; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP IX EP + PG 11 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000001 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Two-Person Zero-Sum Games SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 13 EP 34 PG 22 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000003 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Linear Programming SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 35 EP 62 PG 28 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000004 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Infinite Games SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 63 EP 85 PG 23 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000005 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Multistage Games SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 87 EP 116 PG 30 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000006 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Games with Incomplete Information SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 117 EP 145 PG 29 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000007 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Utility Theory SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 147 EP 157 PG 11 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000008 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Two-Person General-Sum Games SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 159 EP 185 PG 27 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000009 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Two-Person Cooperative Games SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 187 EP 205 PG 19 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000010 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI n-Person Games SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 207 EP 228 PG 22 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000011 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Stable Sets SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 229 EP 253 PG 25 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000012 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Indices of Power SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 255 EP 304 PG 50 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000013 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI The Bargaining Set and Related Concepts SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 305 EP 332 PG 28 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000014 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Nonatomic Games SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 333 EP 354 PG 22 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000015 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Games without Side Payments SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 355 EP 394 PG 40 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000016 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Spatial Games SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 395 EP 412 PG 18 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000017 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI Other Applications SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 413 EP 431 PG 19 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000018 ER PT B AU Owen, G AF Owen, Guillermo BA Owen, G BF Owen, G TI GAME THEORY FOURTH EDITION SO GAME THEORY, 4TH EDITION LA English DT Article; Book Chapter C1 [Owen, Guillermo] Naval Postgrad Sch, Dept Math, Monterey, CA USA. RP Owen, G (reprint author), Naval Postgrad Sch, Dept Math, Monterey, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND BN 978-1-78190-508-1; 978-1-78190-507-4 PY 2013 BP 433 EP 436 PG 4 WC Mathematics, Applied SC Mathematics GA BE7IQ UT WOS:000375316000019 ER PT S AU Lim, TW AF Lim, Tae W. BE Hardaway, LR TI FAST STEERING MIRRORS FOR SPACECRAFT SLEW, SETTLE, AND TRACKING PERFORMANCE ENHANCEMENT SO GUIDANCE AND CONTROL 2013 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT 36th Annual American-Astronautical-Society Rocky Mountain Section Guidance and Control Conference CY FEB 01-06, 2013 CL Rocky Mt Sect, Breckenridge, CO SP Amer Astronaut Soc HO Rocky Mt Sect AB Approaches to harness recent advances in capabilities of a fast steering mirror (FSM) in its size, range of motion, and control bandwidth are explored to enhance the slew, settle, and jitter suppression performance of optical telescope assembly (OTA) payloads as well as their host satellites. As a point study to assess the slew and settle performance benefits of using FSMs and to study their integration approaches for a satellite hosting an OTA payload, the step-stare observation of the Joint Milli-Arcsecond Pathfinder Survey (JMAPS) mission was considered in this paper. The first approach studied was to install an FSM in front of the OTA to perform the step-stare operation by steering the FSM without maneuvering the host satellite. The second approach was to use the satellite bus and its attitude control system to perform slews while employing the FSM to improve settling performance after the slew. The first approach was effective in reducing slew and settle duration, which may take up a significant portion in time in the step-stare observation sequence. However, it required a sizeable FSM mirror with a large range of motion capability in order to accommodate the OTA aperture size. The second approach was beneficial in reducing the required size and range of motion of the FSM by allowing the integration of the FSM within the OTA but was not as effective in reducing the slew and settle time as the first approach since the slew was conducted by the satellite bus. Although preliminary in nature, this study supports that FSMs can be an effective alternative to improving agility and pointing stability for future satellites hosting OTA payloads. C1 [Lim, Tae W.] US Naval Acad, Dept Aerosp Engn, 590 Holloway Rd, Annapolis, MD 21402 USA. RP Lim, TW (reprint author), US Naval Acad, Dept Aerosp Engn, 590 Holloway Rd, Annapolis, MD 21402 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 978-0-87703-601-2 J9 ADV ASTRONAUT SCI PY 2013 VL 149 BP 565 EP 576 PG 12 WC Automation & Control Systems; Engineering, Aerospace SC Automation & Control Systems; Engineering GA BE9HH UT WOS:000377554800038 ER PT J AU Lavietes, AD Trebes, J Borchers, R Dahlburg, J Donnelly, J Isles, A Johnson, N Knoll, G Kouzes, R Lanza, R Lieberman, J Lund, J Prussin, S Russo, J Slakey, F AF Lavietes, Anthony D. Trebes, James Borchers, Robert Dahlburg, Jill Donnelly, John Isles, Adam Johnson, Neil Knoll, Glenn Kouzes, Richard Lanza, Richard Lieberman, Jodi Lund, James Prussin, Stanley Russo, Jeanette Slakey, Francis TI Technical Review of the Domestic Nuclear Detection Office Transformational and Applied Research Directorate's Research and Development Program SO IEEE ACCESS LA English DT Review DE Algorithms and modeling; radiation detection; shielded nuclear materials; nuclear forensics AB At the request of the Domestic Nuclear Detection Office (DNDO), a Study Committee comprised of representatives from the American Physical Society, Panel on Public Affairs, the IEEE, and Nuclear and Plasma Sciences Society performed a technical review of the DNDO Transformational and Applied Research Directorate (TARD) R&D program. TARD's principal objective is to address gaps in the Global Nuclear Detection Architecture (GNDA) through improvements in the performance, cost, and operational burden of detectors and systems. The charge to the Study Committee was to investigate the existing TARD R&D plan and portfolio, recommend changes to the existing plan, and recommend possible new R&D areas and opportunities. This report is the result of an independent, detailed analysis of the current R&D plan and includes, for each application area, observations, and recommendations to focus future investments within the context of the TARD mission. C1 [Lavietes, Anthony D.] IAEA, A-1220 Vienna, Austria. [Trebes, James] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Borchers, Robert] Maui High Performance Comp Ctr, Kihei, HI 96753 USA. [Dahlburg, Jill; Johnson, Neil] Naval Res Lab, Washington, DC 20375 USA. [Donnelly, John] Fire & EMS Inst, Columbia, MO 65203 USA. [Isles, Adam] Raytheon, Waltham, MA 02451 USA. [Knoll, Glenn] Univ Michigan, Ann Arbor, MI 48109 USA. [Kouzes, Richard] Pacific NW Natl Lab, Richland, WA 99354 USA. [Lanza, Richard] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA. [Lieberman, Jodi; Russo, Jeanette; Slakey, Francis] Amer Phys Soc, College Pk, MD 20740 USA. [Lund, James] Sandia Natl Labs, Albuquerque, NM 87123 USA. [Prussin, Stanley] Univ Calif Berkeley, Berkeley, CA 94704 USA. RP Lavietes, AD (reprint author), IAEA, A-1220 Vienna, Austria. EM a.lavietes@ieee.org NR 24 TC 0 Z9 0 U1 2 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 2169-3536 J9 IEEE ACCESS JI IEEE Access PY 2013 VL 1 BP 661 EP 690 DI 10.1109/ACCESS.2013.2281203 PG 30 WC Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA V42ZW UT WOS:000209652700052 ER PT B AU Perry, M Miklosovic, D AF Perry, Matthew Miklosovic, David GP ASME TI TIP FLOWFIELD OF A LOW ASPECT RATIO CIRCULATION CONTROL WING WITH SPANWISE VARIATION IN EFFLUX SO INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION - 2012, VOL 1: ADVANCES IN AEROSPACE TECHNOLOGY LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition CY NOV 09-15, 2012 CL Houston, TX SP ASME AB A stereoscopic particle image velocimetry (SPIV) system was used in a low-speed wind tunnel to measure the external flowfield of a circulation control (CC) wing having an aspect ratio of 1.1. This ongoing project, sponsored by the Office of Naval Research, sought to further the knowledge of the jet interactions and the wingtip vortex formation through 3-component, planar velocity surveys. The CC wing tested had a 20% elliptic airfoil section with a trailing edge Coanda surface that was intended to increase circulation control effectiveness throUgh a segmented system that could create spanwise massflow efflux profiles. To date, 1.2 TB of raw SPIV data have been acquired in one of two wake station planes at z/c = 1.25 over the vertical region of 0.13. < y/b < 0.87 (i.e, the tip region). The three-component velocity data revealed the nature of the interaction of the jet with the external flowfield and the temporal variability at an overall momentum coefficient of 0.08 with spanwise variations in the trailing edge efflux. The results from these tests will be used to quantify, for the first time, the effects of spanwise massflow distributions on the 3D velocity field near the trailing edge, the stall modes, jet interactions, and the overall performance of a CC wing of this geometry C1 [Perry, Matthew; Miklosovic, David] US Naval Acad, Annapolis, MD 21402 USA. RP Perry, M (reprint author), US Naval Acad, Annapolis, MD 21402 USA. NR 25 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 978-0-7918-4517-2 PY 2013 BP 443 EP 453 PG 11 WC Engineering, Aerospace; Engineering, Mechanical SC Engineering GA BC0XZ UT WOS:000349816300045 ER PT B AU Wimmer, SA Pan, MJ DeGiorgi, VG Gorzkowski, EP Leung, AC AF Wimmer, Stephanie A. Pan, Ming-Jen DeGiorgi, Virginia G. Gorzkowski, Edward P. Leung, Alan C. GP ASME TI MODELING TAPE CAST CERAMICS WITH MULTIPLE LAYERS OF FUGITIVE PHASE MATERIALS SO INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION - 2012, VOL 3, PTS A-C: DESIGN, MATERIALS, AND MANUFACTURING LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition CY NOV 09-15, 2012 CL Houston, TX SP ASME AB The fabrication of complex ceramic components requires new processing methods that are able to produce components with intricate geometries and accurate dimensions. The accuracy of the finished ceramic component depends upon precise control of the green ceramic body dimensions and uniformity prior to sintering. The authors are investigating the application of the fugitive phase approach, where a sacrificial material is used to form cavities or channels in the finished ceramic component. This paper, a continuation of a previous work, examines the lamination step of the fugitive phase approach for ceramic fabrication. The lamination step is where the fugitive phase pieces are combined with the tape cast green ceramic pieces. The multilayer green body is pressed to laminate the ceramic tape and fugitive phase layers together. Topological complexity is greatly increased when the tape cast ceramic pieces are interspersed with fugitive phase pieces to build up a consolidated multilayer green body. This paper examines the movement of the fugitive phase pieces, viscoelastic deformation of the ceramic phase, the filling of voids, pressure gradients, and the rebounding that occurs when the green ceramic body is removed from the press. This information will be used to complement parallel experimental investigations of the fugitive phase approach to ceramic fabrication. C1 [Wimmer, Stephanie A.; Pan, Ming-Jen; DeGiorgi, Virginia G.; Gorzkowski, Edward P.; Leung, Alan C.] Naval Res Lab, Washington, DC 20375 USA. RP Wimmer, SA (reprint author), Naval Res Lab, Washington, DC 20375 USA. NR 10 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 978-0-7918-4519-6 PY 2013 BP 9 EP 16 PG 8 WC Engineering, Manufacturing; Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BC1DQ UT WOS:000350004500002 ER PT B AU Trunzo, M Schubbe, J Graham, SM Caton, P AF Trunzo, Mark Schubbe, Joel Graham, Stephen M. Caton, Patrick GP ASME TI INTEGRATION OF CARBON FIBER COMPOSITE MATERIALS INTO AIR-COOLED RECIPROCATING PISTON ENGINES FOR UAV APPLICATIONS SO INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION - 2012, VOL 3, PTS A-C: DESIGN, MATERIALS, AND MANUFACTURING LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition CY NOV 09-15, 2012 CL Houston, TX SP ASME AB The United States Navy (USN) has shown an interest in the development of small displacement, reciprocating piston diesel engines for Unmanned Aerial Vehicles (UAVs). These engines avoid the logistic challenges of relying on gasoline-fueled UAVs, and have relatively low fuel consumption, but suffer from poor power-to-weight ratios. Reducing weight is of significant importance to UAVs to allow sufficient range and loitering times. Carbon fiber composites offer strength-to-weight benefits over the metal components currently used in piston engines. However, composite components have more restrictive operating temperatures. None of the known previous efforts aimed at integration of composites into engines has focused on air-cooled engines and on their potential benefits for UAVs. A small, single-cylinder air-cooled gasoline engine was chosen as a convenient test platform and surrogate for an air-cooled UAV engine. The crankcase and connecting rod from this engine were redesigned using a high fraction of carbon fiber in order to reduce weight. To develop the designs, steady-state temperature profiles were measured both internally and externally. The steady state temperatures for the crankcase ranged between 93 degrees C and 124 degrees C while the connecting rod ranged roughly between 120 degrees C and 160 degrees C. Carbon fiber composite test specimens were tested for strength at a comparable range of temperatures to demonstrate thermal viability. The tensile and compressive tests showed the carbon fiber to be comparable to all aluminum material properties, if not better. Stress was modeled on the stock engine at the worst-case operating condition and used to design the composite crankcase and connecting rod to ensure sufficient strength to survive at this extreme condition. The modeled stresses resulted in a factor of safety of 1.5 for the connecting rod and 3.8 for the crankcase, although internal adhesion of bearing surfaces to fiber was noted as a problem for the connecting rod in the initial prototype, and ultimately led to premature failure. These composite components were integrated and tested, for various lengths of time, on the engine and indicate a potential weight savings of approximately 80% for the crankcase and 26% for the connecting rod. The composite case failed after approximately 20 minutes (O(10(4)) cycles) of operation at the best torque condition (worst-case in terms of mechanical stress) due to manufacturing deficiency at the corners and base; the connecting rod failed after approximately 2 minutes (O(10(3)) cycles) of worst-case operation due to separation of the bearing surface from fiber. Both sets of failures point to simple remedies for follow-on work. The initial prototypes resulted in an overall weight savings of 8.1%. Using commercially available data for small propeller-driven aircraft, this weight savings could be expected to result in a similar relative improvement in aircraft range. C1 [Trunzo, Mark; Schubbe, Joel; Graham, Stephen M.; Caton, Patrick] US Naval Acad, Annapolis, MD 21402 USA. RP Trunzo, M (reprint author), US Naval Acad, Annapolis, MD 21402 USA. NR 12 TC 0 Z9 0 U1 1 U2 4 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4519-6 PY 2013 BP 943 EP 956 PG 14 WC Engineering, Manufacturing; Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BC1DQ UT WOS:000350004500117 ER PT B AU Smith, AN Volino, RJ Flack, KA AF Smith, Andrew N. Volino, Ralph J. Flack, Karen A. GP ASME TI DESIGN OF A HEAT SINK IN AN UNDERGRADUATE HEAT TRANSFER COURSE SO INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION - 2012, VOL 5 LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition CY NOV 09-15, 2012 CL Houston, TX SP ASME AB Thermal design was incorporated into an undergraduate heat transfer course through a multistage design project. The students were tasked with designing water channels to be cut in an aluminum block using a wire electrical discharge machining (EDM) process. The students begin the process by analyzing the internal channels as a one dimensional array of fins using traditional analysis and correlations and Engineering Equation Solver (EES) to perform the calculations. Working in groups of two, the students conduct several parametric studies and develop a preliminary design using an array of fins method. The requirements for the design included outcomes that had to be met, along with weighting factors for key aspects of the design such as thermal performance, pressure drop, fabrication cost and volumetric flow rate. Next, the students analyze their preliminary design using Solid Works flow simulation and compare their results to the one dimensional array of fins analysis. The groups then begin the process of refining their design using Solid Works flow simulation to predict key parameters. Finally, the students select their best design which is fabricated using a wire EDM machine. The heat sinks are tested using a single experimental apparatus and the best design is determined based on the original requirements. The project is first introduced when the students are covering resistor networks and the analysis of an array of fins. The computational aspect of the project begins after the students have covered steady state conduction using finite difference methods. Using the computational results the students plot the heat transfer coefficient on the surface of the channel, which complements the lectures on internal developing flows. C1 [Smith, Andrew N.; Volino, Ralph J.; Flack, Karen A.] US Naval Acad, Annapolis, MD 21042 USA. RP Smith, AN (reprint author), US Naval Acad, Annapolis, MD 21042 USA. NR 6 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 978-0-7918-4521-9 PY 2013 BP 323 EP 328 PG 6 WC Education, Scientific Disciplines; Engineering, Mechanical SC Education & Educational Research; Engineering GA BC1GG UT WOS:000350070700039 ER PT B AU Miller, SP Fleischer, AS AF Miller, Steven P. Fleischer, Amy S. GP ASME TI CONDUCTIVITY MEASUREMENT OF GENETICALLY ANNEALED ZIRCONIA FROM MOLECULAR DYNAMICS SIMULATIONS SO INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION - 2012, VOL 6, PTS A AND B LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition CY NOV 09-15, 2012 CL Houston, TX SP ASME ID ELECTRICAL-CONDUCTIVITY; STABILIZED ZIRCONIA; FUEL-CELLS; SYSTEM; ELECTROLYTES; DEGRADATION; CONDUCTORS AB Characteristics of the annealed state of yttria and scandia stabilized zirconia have been investigated using molecular dynamics simulations. A genetic algorithm was used to find the minimal energy configuration of dopant ions to simulate the effects of annealing for compositions of 8 mol% Y2O3 in ZrO2, and compositions with 9, 10 and 11 mol% Sc2O3 with, respectively, 2, 1 and 0 mol% Y2O3 in ZrO2. Conductivity and diffusion coefficients were calculated in each case, and it was discovered that the conductivity increased when the dopant ions were located distant to each other, and the number of first neighbor dopant-dopant pairs were reduced. Furthermore, the Haven ratio was calculated to be on the order of 0.9 for the 11 mol% doped specimens, but substantially lower for the 8 mol% yttria in zirconia specimens. C1 [Miller, Steven P.] Naval Surface Warfare Ctr, Carderock Div, Philadelphia, PA 19112 USA. RP Miller, SP (reprint author), Naval Surface Warfare Ctr, Carderock Div, Philadelphia, PA 19112 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 978-0-7918-4522-6 PY 2013 BP 1223 EP 1229 PG 7 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BC1GD UT WOS:000350070400133 ER PT B AU Urick, VJ Bucholtz, F Funk, EE AF Urick, Vincent J. Bucholtz, Frank Funk, Eric E. BE Lee, CH TI High Dynamic Range, 100 km Digital Radio-over-Fiber Links SO MICROWAVE PHOTONICS, 2ND EDITION LA English DT Article; Book Chapter ID POLARIZATION-MODE DISPERSION; ANALOG OPTICAL LINKS; MICROWAVE-PHOTONIC LINK; MACH-ZEHNDER MODULATOR; LASER PHASE NOISE; SUPPRESSED-CARRIER MODULATION; CHROMATIC DISPERSION; EXTERNAL MODULATION; INTENSITY NOISE; INTERFEROMETRIC DEMODULATION C1 [Urick, Vincent J.; Bucholtz, Frank] US Naval Res Lab, Washington, DC 20375 USA. [Funk, Eric E.] Red Mt Radio LLC, Ouray, CO USA. RP Urick, VJ (reprint author), US Naval Res Lab, Washington, DC 20375 USA. NR 123 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 978-1-4665-0287-1; 978-1-4665-0286-4 PY 2013 BP 201 EP 241 D2 10.1201/b13886 PG 41 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BC6UA UT WOS:000354484800007 ER PT B AU McKinney, JD Weiner, AM AF McKinney, Jason D. Weiner, Andrew M. BE Lee, CH TI Photonic Synthesis of Ultrabroadband Arbitrary Electromagnetic Waveforms SO MICROWAVE PHOTONICS, 2ND EDITION LA English DT Article; Book Chapter ID ULTRA-WIDE-BAND; I-N PHOTODETECTORS; TIME PULSE SHAPER; ASSISTED GENERATION; SILICON PHOTONICS; WDM TRANSMISSION; PHASE MODULATORS; MILLIMETER-WAVE; HIGH-SPEED; RADIOFREQUENCY C1 [McKinney, Jason D.] US Naval Res Lab, Washington, DC 20375 USA. [Weiner, Andrew M.] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA. RP McKinney, JD (reprint author), US Naval Res Lab, Washington, DC 20375 USA. NR 126 TC 6 Z9 6 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 978-1-4665-0287-1; 978-1-4665-0286-4 PY 2013 BP 243 EP 306 D2 10.1201/b13886 PG 64 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BC6UA UT WOS:000354484800008 ER PT B AU Gross, ML Carrick, D AF Gross, Michael L. Carrick, Don BE Gross, ML Carrick, D TI Military Medical Ethics for the 21st Century Introduction SO MILITARY MEDICAL ETHICS FOR THE 21ST CENTURY SE Military and Defence Ethics LA English DT Editorial Material; Book Chapter C1 [Gross, Michael L.] Univ Haifa, Polit Sci, IL-31999 Haifa, Israel. [Gross, Michael L.] Dutch Minist Def, The Hague, Netherlands. [Gross, Michael L.] Walter Reed Med Ctr, US Army Med Dept, Bethesda, MD USA. [Gross, Michael L.] US Naval Acad, Annapolis, MD 21402 USA. [Gross, Michael L.] Med Corps, Los Angeles, CA USA. [Gross, Michael L.] Israel Def Forces, Natl Secur Coll, Jerusalem, Israel. [Carrick, Don] Univ Hull, Polit Philosophy & Jurisprudence, Kingston Upon Hull HU6 7RX, N Humberside, England. [Carrick, Don] Univ Leeds, Med & Mil Med Eth, Leeds LS2 9JT, W Yorkshire, England. RP Gross, ML (reprint author), Univ Haifa, Polit Sci, IL-31999 Haifa, Israel. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASHGATE PUBLISHING LTD PI ALDERSHOT PA GOWER HOUSE, CROFT ROAD, ALDERSHOT GU11 3HR, ENGLAND BN 978-1-4094-3899-1; 978-1-4094-3898-4 J9 MILIT DEFEN ETHIC PY 2013 BP 1 EP 13 PG 13 WC History SC History GA BC4ER UT WOS:000352395900001 ER PT B AU Gross, ML AF Gross, Michael L. BE Gross, ML Carrick, D TI The Limits of Impartial Medical Treatment during Armed Conflict SO MILITARY MEDICAL ETHICS FOR THE 21ST CENTURY SE Military and Defence Ethics LA English DT Article; Book Chapter ID HEALTH-CARE; WAR; AFGHANISTAN; OBLIGATIONS; PHYSICIANS; COHESION; FREEDOM; SUPPORT; TRIAGE C1 [Gross, Michael L.] Univ Haifa, Polit Sci, IL-31999 Haifa, Israel. [Gross, Michael L.] Dutch Minist Def, The Hague, Netherlands. [Gross, Michael L.] Walter Reed Med Ctr, US Army Med Dept, Bethesda, MD USA. [Gross, Michael L.] US Naval Acad, Annapolis, MD 21402 USA. [Gross, Michael L.] Med Corps, Los Angeles, CA USA. [Gross, Michael L.] Israel Def Forces, Natl Secur Coll, Jerusalem, Israel. RP Gross, ML (reprint author), Univ Haifa, Polit Sci, IL-31999 Haifa, Israel. NR 51 TC 0 Z9 0 U1 0 U2 0 PU ASHGATE PUBLISHING LTD PI ALDERSHOT PA GOWER HOUSE, CROFT ROAD, ALDERSHOT GU11 3HR, ENGLAND BN 978-1-4094-3899-1; 978-1-4094-3898-4 J9 MILIT DEFEN ETHIC PY 2013 BP 71 EP 84 PG 14 WC History SC History GA BC4ER UT WOS:000352395900005 ER PT B AU Mehlman, MJ Lin, P Abney, K AF Mehlman, Maxwell J. Lin, Patrick Abney, Keith BE Gross, ML Carrick, D TI Enhanced Warfighters: A Policy Framework SO MILITARY MEDICAL ETHICS FOR THE 21ST CENTURY SE Military and Defence Ethics LA English DT Article; Book Chapter ID PHARMACOLOGICAL FATIGUE COUNTERMEASURES; US MILITARY; ETHICAL USE; RECOMMENDATIONS; CONSENT; DRUGS C1 [Mehlman, Maxwell J.] Case Western Reserve Univ, Sch Law, Law, Cleveland, OH 44106 USA. [Mehlman, Maxwell J.] Case Western Reserve Univ, Sch Law, Law Med Ctr, Cleveland, OH 44106 USA. [Lin, Patrick] Calif Polytech State Univ San Luis Obispo, Eth & Emerging Sci Grp, San Luis Obispo, CA 93407 USA. [Lin, Patrick] US Naval Acad, Annapolis, MD 21402 USA. [Lin, Patrick] Dartmouth Coll, Hanover, NH 03755 USA. [Abney, Keith] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA. RP Mehlman, MJ (reprint author), Case Western Reserve Univ, Sch Law, Law, Cleveland, OH 44106 USA. NR 23 TC 2 Z9 2 U1 2 U2 2 PU ASHGATE PUBLISHING LTD PI ALDERSHOT PA GOWER HOUSE, CROFT ROAD, ALDERSHOT GU11 3HR, ENGLAND BN 978-1-4094-3899-1; 978-1-4094-3898-4 J9 MILIT DEFEN ETHIC PY 2013 BP 113 EP 126 PG 14 WC History SC History GA BC4ER UT WOS:000352395900008 ER PT J AU Yoho, KD Bummara, J Clark, W Kelley, C AF Yoho, Keenan D. Bummara, Justin Clark, William Kelley, Christopher TI Strategic Resource Allocation: Selecting Vessels to Support Maritime Irregular Warfare SO MILITARY OPERATIONS RESEARCH LA English DT Article AB The US Navy is at a critical juncture in determining the types and numbers of ships it will acquire, retire, and sustain to support an evolving US military strategy. In addition to determining how many aircraft carriers, cruisers, amphibious assault craft, fighters, and helicopters it will need, the Navy must determine how it will confront maritime irregular warfare. Assuming an environment of resource scarcity, where new vessel acquisition to support maritime irregular warfare may be increasingly difficult or unlikely, we introduce a method for evaluating the capability and costs of candidate vessels that are in the current Department of Defense inventory, or widely available from the commercial sector to conduct such a mission. Our method combines wargaming with cost analysis to aid Navy leadership in developing maritime irregular warfare concepts of operation as well as resource allocation decisions. C1 [Yoho, Keenan D.] Naval Postgrad Sch, Monterey, CA USA. [Bummara, Justin; Kelley, Christopher] US Navy, Washington, DC USA. [Clark, William] US Army, Washington, DC USA. RP Yoho, KD (reprint author), Naval Postgrad Sch, Monterey, CA USA. EM kdyoho@nps.edu; justin.bummara@fe.navy.mil; william.clark9@us.army.mil; christopher.kelley@navsoc.socom.mil NR 20 TC 0 Z9 0 U1 0 U2 0 PU MILITARY OPERATIONS RESEARCH SOC PI ALEXANDRIA PA 1703 N BEAUREGARD ST, STE 450, ALEXANDRIA, VA 22311-1717 USA SN 0275-5823 J9 MIL OPER RES JI Mil. Oper. Res. PY 2013 VL 18 IS 3 BP 21 EP 33 DI 10.5711/1082598318321 PG 13 WC Operations Research & Management Science SC Operations Research & Management Science GA V43NY UT WOS:000209689300002 ER PT J AU Brown, GG Carlyle, WM Dell, RF Brau, JW AF Brown, Gerald G. Carlyle, W. Matthew Dell, Robert F. Brau, John W., Jr. TI Optimizing Intratheater Military Airlift in Iraq and Afghanistan SO MILITARY OPERATIONS RESEARCH LA English DT Article AB The Air Tasking and Efficiency Model (ATEM) has been used since 2006. Its development was motivated by an urgent need to plan and evaluate intratheater airlift of passengers and palletized freight for Operation Iraqi Freedom in Iraq and Operation Enduring Freedom in Afghanistan. ATEM plans routes and aircraft configurations (capacity of passenger seats and pallet positions) for a heterogeneous fleet of aircraft flying between multiple airfields. ATEM respects limits on crew duty periods, times and abilities of each airfield to handle and fuel each aircraft type, and aircraft speed and carrying capacity. Initially, ATEM advised improving daily and weekly route ensembles, conveying more passengers and pallets and using fewer aircraft than prior manually generated solutions. This early use reduced the required number of ground convoys and thereby exposure to improvised explosive devices. Later, AI EM advised where to advantageously move aircraft to new home airfields, how to shift aircraft between theaters, and when to bring aircraft home from war. That I have hoisted sail to all the winds, which should transport me farthest from your sight. Shakespeare, Sonnet C1 [Brown, Gerald G.; Carlyle, W. Matthew; Dell, Robert F.] Naval Postgrad Sch, Monterey, CA USA. [Brau, John W., Jr.] USTRANSCOM TCAC D, Washington, DC USA. RP Brown, GG (reprint author), Naval Postgrad Sch, Monterey, CA USA. EM ggbrown@nps.edu; mcarlyle@nps.edu; dell@nps.edu; john.brau@ustranscom.mil FU Air Force Office of Scientific Research; Office of Naval Research FX Brown thanks the Air Force Office of Scientific Research and the Office of Naval Research for long-term, pure research support, with encouragement to find important problems and solve them. Carlyle also acknowledges support from the Office of Naval Research. NR 26 TC 1 Z9 1 U1 1 U2 1 PU MILITARY OPERATIONS RESEARCH SOC PI ALEXANDRIA PA 1703 N BEAUREGARD ST, STE 450, ALEXANDRIA, VA 22311-1717 USA SN 0275-5823 J9 MIL OPER RES JI Mil. Oper. Res. PY 2013 VL 18 IS 3 BP 35 EP 52 DI 10.5711/1082598318335 PG 18 WC Operations Research & Management Science SC Operations Research & Management Science GA V43NY UT WOS:000209689300003 ER PT J AU Byers, JM AF Byers, J. M. TI Quantifying information transfer in signal transduction SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 [Byers, J. M.] Naval Res Lab, Washington, DC 20375 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC CELL BIOLOGY PI BETHESDA PA 8120 WOODMONT AVE, STE 750, BETHESDA, MD 20814-2755 USA SN 1059-1524 EI 1939-4586 J9 MOL BIOL CELL JI Mol. Biol. Cell PY 2013 VL 24 MA 2335 PG 1 WC Cell Biology SC Cell Biology GA V38MY UT WOS:000209348705045 ER PT J AU Raphael, MP Christodoulides, JA Delehanty, JB Long, JP Byers, JM AF Raphael, M. P. Christodoulides, J. A. Delehanty, J. B. Long, J. P. Byers, J. M. TI Quantitative Imaging of Protein Secretions from Single Cells in Real Time SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 [Raphael, M. P.; Christodoulides, J. A.; Delehanty, J. B.; Long, J. P.; Byers, J. M.] Naval Res Lab, Washington, DC 20375 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOLOGY PI BETHESDA PA 8120 WOODMONT AVE, STE 750, BETHESDA, MD 20814-2755 USA SN 1059-1524 EI 1939-4586 J9 MOL BIOL CELL JI Mol. Biol. Cell PY 2013 VL 24 MA 2197 PG 2 WC Cell Biology SC Cell Biology GA V38MY UT WOS:000209348704303 ER PT B AU Kampfer, N Nedoluha, G Haefele, A De Wachter, E AF Kaempfer, Niklaus Nedoluha, Gerald Haefele, Alexander De Wachter, Evelyn BE Kampfer, N TI Microwave Radiometry SO MONITORING ATMOSPHERIC WATER VAPOUR: GROUND-BASED REMOTE SENSING AND IN-SITU METHODS SE ISSI Scientific Report Series LA English DT Article; Book Chapter ID ATMOSPHERIC WATER-VAPOR; MILLIMETER-WAVE SPECTROMETER; RETRIEVAL C1 [Kaempfer, Niklaus; Haefele, Alexander; De Wachter, Evelyn] Univ Bern, Inst Appl Phys, CH-3012 Bern, Switzerland. [Nedoluha, Gerald] Naval Res Lab, Washington, DC 20375 USA. RP Kampfer, N (reprint author), Univ Bern, Inst Appl Phys, Sidlerstr 5, CH-3012 Bern, Switzerland. EM niklaus.kaempfer@iap.unibe.ch NR 24 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-1-4614-3909-7; 978-1-4614-3908-0 J9 ISSI SCI REP SER PY 2013 VL 10 BP 71 EP 93 DI 10.1007/978-1-4614-3909-7_5 D2 10.1007/978-1-4614-3909-7 PG 23 WC Meteorology & Atmospheric Sciences; Remote Sensing SC Meteorology & Atmospheric Sciences; Remote Sensing GA BD5DA UT WOS:000361326400006 ER PT B AU Pirlo, RK Wu, P Ringeisen, B AF Pirlo, Russell Kirk Wu, Peter Ringeisen, Brad BE Fujii, M Lozo, B TI Computer Aided Design and Manufacturing of Soft, Three-Dimensional, Multi-Layer, Biological Constructs Via Laser Printing Onto Laser Machined Composite Biopapers SO NIP29: 29TH INTERNATIONAL CONFERENCE ON DIGITAL PRINTING TECHNOLOGIES / DIGITAL FABRICATION 2013 LA English DT Proceedings Paper CT 29th International Conference on Digital Printing Technologies (NIP29) / Digital Fabrication 2013 CY SEP 29-OCT 03, 2013 CL Seatt;e, WA SP hp invent, xerox, 7-SIGMA, RICOH, CABOT, XAAR, EVONIK IND, esprix technol, INGEDE, Image Sci Assoc, TReK, qea C1 [Pirlo, Russell Kirk; Ringeisen, Brad] US Naval Res Lab, Div Chem, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Wu, Peter] Univ Southern Oregon, Dept Phys & Engn, Ashland, OR 97520 USA. RP Pirlo, RK (reprint author), US Naval Res Lab, Div Chem, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC IMAGING SCIENCE & TECHNOLOGY PI SPRINGFIELD PA 7003 KILWORTH LANE, SPRINGFIELD, VA 22151 USA BN 978-0-89208-306-0 PY 2013 BP 235 EP 235 PG 1 WC Imaging Science & Photographic Technology SC Imaging Science & Photographic Technology GA BG9WA UT WOS:000393928800061 ER PT B AU Lemaire, P Aschenbach, B Seely, JF AF Lemaire, Philippe Aschenbach, Bernd Seely, John F. BE Huber, MCE Pauluhn, A Culhane, JL Timothy, JG Wilhelm, K Zehnder, A TI Space telescopes SO OBSERVING PHOTONS IN SPACE: A GUIDE TO EXPERIMENTAL SPACE ASTRONOMY, 2ND EDITION SE ISSI Scientific Report Series LA English DT Article; Book Chapter ID X-RAY ASTRONOMY; GRAZING-INCIDENCE OPTICS; EXTREME-ULTRAVIOLET; WIDE-FIELD; IMAGING SPECTROMETER; SOLAR; PERFORMANCE; MIRRORS; MULTILAYERS; SENSITIVITY AB A brief survey of normal and grazing incidence space telescope types is given. The optimization of telescope efficiency either by dedicated single, bi-layer or multi-layer coatings is described. An outlook of solar and stellar coronagraphs is included. C1 [Lemaire, Philippe] Univ Paris 11, Inst Astrophys Spatiale, F-91405 Orsay, France. [Seely, John F.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA. RP Lemaire, P (reprint author), Univ Paris 11, Inst Astrophys Spatiale, Bat 425, F-91405 Orsay, France. EM philippe.lemaire@ias.u-psud.fr; john.seely@nrl.navy.mil NR 67 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-1-4614-7804-1; 978-1-4614-7803-4 J9 ISSI SCI REP SER PY 2013 VL 9 BP 183 EP 210 DI 10.1007/978-1-4614-7804-1_9 D2 10.1007/978-1-4614-7804-1 PG 28 WC Astronomy & Astrophysics; Remote Sensing SC Astronomy & Astrophysics; Remote Sensing GA BD5DC UT WOS:000361327100011 ER PT S AU Bright, DS Powley, EH Fry, RE Barrett, F AF Bright, David S. Powley, Edward H. Fry, Ronald E. Barrett, Frank BE Cooperrider, DL Zandee, DP Godwin, LN Avital, M Boland, B TI THE GENERATIVE POTENTIAL OF CYNICAL CONVERSATIONS SO ORGANIZATIONAL GENERATIVITY: THE APPRECIATIVE INQUIRY SUMMIT AND A SCHOLARSHIP OF TRANSFORMATION SE Advances in Appreciative Inquiry LA English DT Article; Book Chapter ID COMPLEX DYNAMICS; TEAMS; PERFORMANCE; INQUIRY; WORK AB A common concern raised in opposition to Appreciative Inquiry (AI) is that a focus on life-giving images in organizations tends to suppress negative voices. It is supposed that AI sees little value in skeptical, cynical, or negative perspectives. However, when AI is properly understood, all voices - both positive and negative - are seen as essential to the life of organization. The challenge is to create an atmosphere in which the cynical voice, rather than perpetuating dysfunction, can be tapped to build generativity. This chapter describes how to accomplish this objective through the use of analogic inquiry, thus exploring the focus on generativity that is central to AI. C1 [Bright, David S.] Wright State Univ, Dayton, OH 45435 USA. [Powley, Edward H.; Barrett, Frank] Naval Postgrad Sch, Monterey, CA USA. [Fry, Ronald E.] Case Western Reserve Univ, Cleveland, OH 44106 USA. RP Bright, DS (reprint author), Wright State Univ, Dayton, OH 45435 USA. NR 46 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND SN 1475-9152 BN 978-1-84855-489-4; 978-1-84855-488-7 J9 ADV APPREC INQ PY 2013 VL 4 BP 135 EP 157 DI 10.1108/S1475-9152(2013)0000004005 PG 23 WC Management SC Business & Economics GA BD1TM UT WOS:000358353200007 ER PT S AU Bhattacharjea, R Anderson, CR Durgin, GD AF Bhattacharjea, R. Anderson, C. R. Durgin, G. D. GP Electromagnet Acad TI A Direct Spectral Domain Method for Near-ground Microwave Radiation by a Vertical Dipole above Earth in the Presence of Atmospheric Refractivity SO PIERS 2013 STOCKHOLM: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM SE Progress in Electromagnetics Research Symposium LA English DT Proceedings Paper CT Progress In Electromagnetics Research Symposium CY AUG 12-15, 2013 CL Stockholm, SWEDEN SP Royal Inst Technol, Sino Swedish Joint Res Ctr Photon, Asian Off Aerosp Res & Dev, Swedish Inst, Swedish Res Council, Zhejiang Univ, Electromagnet Acad, Electromagnet Acad ID HIGHLY OSCILLATORY INTEGRALS; FORM GREENS-FUNCTIONS; COMPLEX IMAGE METHOD; PARABOLIC EQUATION; PROPAGATION; MEDIA; QUADRATURE AB A spectral domain method is presented to calculate the potential of a vertical dipole in a multilayered medium as a model of long-range radio propagation. The spectral domain Green's function (SDGF) for structures with up to hundreds of thousands of layers is calculated using an efficient matrix formulation, thus enabling simulation of continuously stratified media. The SDGF is sampled to perform pole/residue-extraction using contour quadratures and to perform a novel asymptotic Filon-Clenshaw-Curtis (FCC) quadrature to calculate the far-field Green's functions. The near-fields are directly calculated using an adaptive Clenshaw-Curtis quadrature without pole-extraction. Results of numerical simulations are presented in the case of a graded-index waveguide and an atmospheric gradient-layer above a realistic lossy ground. C1 [Bhattacharjea, R.; Durgin, G. D.] Georgia Inst Technol, Atlanta, GA 30332 USA. [Bhattacharjea, R.; Anderson, C. R.] US Naval Acad, Annapolis, MD 21402 USA. RP Bhattacharjea, R (reprint author), Georgia Inst Technol, Atlanta, GA 30332 USA. NR 24 TC 0 Z9 0 U1 0 U2 0 PU ELECTROMAGNETICS ACAD PI CAMBRIDGE PA 777 CONCORD AVENUE, STE 207, CAMBRIDGE, MA 02138 USA SN 1559-9450 BN 978-1-934142-26-4 J9 PR ELECTROMAGN RES S PY 2013 BP 320 EP 324 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BD5FO UT WOS:000361384200065 ER PT S AU Garsany, Y Ge, JJ St-Pierre, J Rocheleau, R Swider-Lyons, KE AF Garsany, Yannick Ge, Junjie St-Pierre, Jean Rocheleau, Richard Swider-Lyons, Karen E. BE Gasteiger, HA Weber, A Shinohara, K Uchida, H Mitsushima, S Schmidt, TJ Narayanan, SR Ramani, V Fuller, T Edmundson, M Strasser, P Mantz, R Fenton, J Buchi, FN Hansen, DC Jones, DL Coutanceau, C SwiderLyons, K Perry, KA TI Standardizing Thin-Film Rotating Disk Electrode Measurements of the Oxygen Reduction Activity of Pt/C SO POLYMER ELECTROLYTE FUEL CELLS 13 (PEFC 13) SE ECS Transactions LA English DT Proceedings Paper CT 13th Polymer Electrolyte Fuel Cell Symposium (PEFC) CY OCT 27-NOV 01, 2013 CL San Francisco, CA SP Electrochem Soc, Electrochem Soc, Ind Electrochemistry & Electrochem Engn Div, Electrochem Soc, Battery Div, Electrochem Soc, Corros Div, Electrochem Soc, Energy Technol Div, Electrochem Soc, Phys & Analyt Electrochemistry Div, N E Chemcat Corp ID CATALYSTS; CARBON; ALLOY; NANOPARTICLES AB Rotating disk electrode voltammetry has been touted as a simple means for benchmarking the oxygen reduction activity of platinum-based catalysts in proton exchange membrane fuel cells. The RDE methodology is still highly variable across laboratories, and due to differences in experimental conditions, up to 2.5x differences in mass activities are reported in recent literature from the same catalyst. We demonstrate an RDE protocol, and show that it can be replicated in two different laboratories. Uniform RDE methodology should be developed so that advanced catalysts can be compared between laboratories. C1 [Garsany, Yannick] EXCET INC, Springfield, VA 22151 USA. [Ge, Junjie; St-Pierre, Jean; Rocheleau, Richard] Univ Hawaii, HNEI, Honolulu, HI 96822 USA. [Swider-Lyons, Karen E.] US Navy, Res Lab, Washington, DC 20375 USA. RP Garsany, Y (reprint author), EXCET INC, Springfield, VA 22151 USA. NR 18 TC 8 Z9 8 U1 7 U2 12 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-446-6; 978-1-60768-445-9 J9 ECS TRANSACTIONS PY 2013 VL 58 IS 1 BP 3 EP 14 DI 10.1149/05801.0003ecst PG 12 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BC6TH UT WOS:000354475600001 ER PT S AU Garsany, Y Ge, JJ St-Pierre, J Rocheleau, R Swider-Lyons, KE AF Garsany, Yannick Ge, Junjie St-Pierre, Jean Rocheleau, Richard Swider-Lyons, Karen E. BE Gasteiger, HA Weber, A Shinohara, K Uchida, H Mitsushima, S Schmidt, TJ Narayanan, SR Ramani, V Fuller, T Edmundson, M Strasser, P Mantz, R Fenton, J Buchi, FN Hansen, DC Jones, DL Coutanceau, C SwiderLyons, K Perry, KA TI ORR Measurements Reproducibility Using a RRDE SO POLYMER ELECTROLYTE FUEL CELLS 13 (PEFC 13) SE ECS Transactions LA English DT Proceedings Paper CT 13th Polymer Electrolyte Fuel Cell Symposium (PEFC) CY OCT 27-NOV 01, 2013 CL San Francisco, CA SP Electrochem Soc, Electrochem Soc, Ind Electrochemistry & Electrochem Engn Div, Electrochem Soc, Battery Div, Electrochem Soc, Corros Div, Electrochem Soc, Energy Technol Div, Electrochem Soc, Phys & Analyt Electrochemistry Div, N E Chemcat Corp ID OXYGEN REDUCTION REACTION; CATALYSTS; CARBON; ELECTRODE AB The NRL rotational drying method was used to prepare thin film Pt/C electrodes. The electrodes were characterized by the RRDE mearsurements, in which the disk curves were used for the ORR kinetic measurements and the ring curves for the H2O2 production evaluation. The reproducibility of both ring and disk currents for the ORR was investigated. It is demonstrated that RRDE methodology was highly repeatable with the use of the high quality films obtained from the rotational drying method. The results were also repeatable across laboratories, even when different measurement equipment was used, as long as attention was paid to key details about film preparation, chemical and gas purity, and cycling procedures. The rotational drying method for the RRDE measurements make it possible in getting highly reliable and reproducible performance data on the catalysts, which is crucial for the validation of the advancement in catalysts at various laboratories. C1 [Garsany, Yannick] EXCET INC, Springfield, VA 22151 USA. [Ge, Junjie; St-Pierre, Jean; Rocheleau, Richard] Univ Hawaii, HNEI, Honolulu, HI 96822 USA. [Swider-Lyons, Karen E.] US Naval Res Lab, Washington, DC 20375 USA. RP Garsany, Y (reprint author), EXCET INC, Springfield, VA 22151 USA. NR 13 TC 3 Z9 3 U1 7 U2 16 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-446-6; 978-1-60768-445-9 J9 ECS TRANSACTIONS PY 2013 VL 58 IS 1 BP 1233 EP 1241 DI 10.1149/05801.1233ecst PG 9 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BC6TH UT WOS:000354475600121 ER PT J AU Breed, M Venter, C Harding, AK Johnson, TJ AF Breed, M. Venter, C. Harding, A. K. Johnson, T. J. BE Botha, R Jili, T TI Implementation of an offset-dipole magnetic field in a pulsar modelling code SO PROCEEDINGS OF SAIP2013: THE 58TH ANNUAL CONFERENCE OF THE SOUTH AFRICAN INSTITUTE OF PHYSICS LA English DT Proceedings Paper CT 58th Annual Conference of the South-African-Institute-of-Physics (SAIP) CY JUL 08-12, 2013 CL Univ Zululand, Richards Bay Campus, Richards Bay, SOUTH AFRICA SP South African Inst Phys HO Univ Zululand, Richards Bay Campus ID LARGE-AREA TELESCOPE; GAMMA-RAY PULSARS; OUTER MAGNETOSPHERE; SLOT GAPS; RADIATION; ACCELERATION; CASCADES; EMISSION; CATALOG AB The light curves of gamma-ray pulsars detected by the Fermi Large Area Telescope show great variety in profile shape and position relative to their radio profiles. Such diversity hints at distinct underlying magnetospheric and/or emission geometries for the individual pulsars. We implemented an offset-dipole magnetic field in an existing geometric pulsar modelling code which already includes static and retarded vacuum dipole fields. In our model, this offset is characterised by a parameter epsilon (with epsilon = 0 corresponding to the static dipole case). We constructed sky maps and light curves for several pulsar parameters and magnetic fields, studying the effect of an offset dipole on the resulting light curves. A standard two-pole caustic emission geometry was used. As an application, we compared our model light curves with Fermi data for the bright Vela pulsar. C1 [Breed, M.; Venter, C.] North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa. [Harding, A. K.] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA. [Johnson, T. J.] Natl Acad Sci, Natl Res Council Res Associate, Washington, DC 20001 USA. [Johnson, T. J.] Naval Res Lab, Washington, DC 20375 USA. RP Breed, M (reprint author), North West Univ, Ctr Space Res, Potchefstroom Campus,Private Bag X6001, ZA-2520 Potchefstroom, South Africa. EM 20574266@nwu.ac.za NR 20 TC 0 Z9 0 U1 0 U2 0 PU SOUTH AFRICAN INST PHYSICS PI LYNNWOOD RIDGE PA POSTNET STE 165, PRIVATE BAG X025, LYNNWOOD RIDGE, 0040, SOUTH AFRICA BN 978-0-620-62819-8 PY 2013 BP 350 EP 355 PG 6 WC Physics, Applied; Physics, Multidisciplinary SC Physics GA BE1GI UT WOS:000367879900059 ER PT J AU Seyffert, AS Venter, C Harding, AK Johnson, TJ AF Seyffert, A. S. Venter, C. Harding, A. K. Johnson, T. J. BE Botha, R Jili, T TI Modelling the gamma-ray and radio light curves of the double pulsar system SO PROCEEDINGS OF SAIP2013: THE 58TH ANNUAL CONFERENCE OF THE SOUTH AFRICAN INSTITUTE OF PHYSICS LA English DT Proceedings Paper CT 58th Annual Conference of the South-African-Institute-of-Physics (SAIP) CY JUL 08-12, 2013 CL Univ Zululand, Richards Bay Campus, Richards Bay, SOUTH AFRICA SP South African Inst Phys HO Univ Zululand, Richards Bay Campus AB Guillemot et al. recently reported the discovery of gamma-ray pulsations from the 22.7 ms pulsar (pulsar A) in the famous double pulsar system J0737-3039A/B. The gamma-ray light curve of pulsar A exhibits two peaks separated by approximately half a rotation, and these are noncoincident with the observed radio and X-ray peaks. This suggests that the gamma-ray emission originates in a part of the magnetosphere distinct from where the radio and X-ray radiation is generated. Thus far, three different methods have been applied to constrain the viewing geometry of pulsar A (the inclination angle between its magnetic and rotation axes, and the observer angle): geometric modelling of the radio and gamma-ray light curves, modelling of the position angle sweep in phase seen in the radio polarisation data, and independent studies of the time evolution of the radio pulse profile of pulsar A. These three independent, complementary methods have yielded consistent results: pulsar A's rotation axis is likely perpendicular to the orbital plane of the binary system, and its magnetic axis close to lying in the orbital plane (making this pulsar an orthogonal rotator). The observer is furthermore observing emission close to the magnetic axis. Thus far, however, current models could not reproduce all the characteristics of the radio and gamma-ray light curves, specifically the large radio-to-gamma phase lag. In this paper we discuss some preliminary modelling attempts to address this problem, and offer ideas on how the light curve fits may be improved by adapting the standard geometric models in order to reproduce the profile peak positions more accurately. C1 [Seyffert, A. S.; Venter, C.] North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa. [Harding, A. K.] NASA, Astrophys Sci Div, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Johnson, T. J.] Natl Acad Sci, Natl Res Council Res Associate, Washington, DC 20001 USA. [Johnson, T. J.] Naval Res Lab, High Energy Space Environm Branch, Washington, DC 20375 USA. RP Seyffert, AS (reprint author), North West Univ, Ctr Space Res, Potchefstroom Campus,Private Bag X6001, ZA-2520 Potchefstroom, South Africa. EM 20126999@nwu.ac.za NR 4 TC 0 Z9 0 U1 0 U2 0 PU SOUTH AFRICAN INST PHYSICS PI LYNNWOOD RIDGE PA POSTNET STE 165, PRIVATE BAG X025, LYNNWOOD RIDGE, 0040, SOUTH AFRICA BN 978-0-620-62819-8 PY 2013 BP 380 EP 384 PG 5 WC Physics, Applied; Physics, Multidisciplinary SC Physics GA BE1GI UT WOS:000367879900064 ER PT J AU Venter, C Johnson, TJ Harding, AK Grove, JE AF Venter, C. Johnson, T. J. Harding, A. K. Grove, J. E. BE Botha, R Jili, T TI Modelling the light curves of Fermi LAT millisecond pulsars SO PROCEEDINGS OF SAIP2013: THE 58TH ANNUAL CONFERENCE OF THE SOUTH AFRICAN INSTITUTE OF PHYSICS LA English DT Proceedings Paper CT 58th Annual Conference of the South-African-Institute-of-Physics (SAIP) CY JUL 08-12, 2013 CL Univ Zululand, Richards Bay Campus, Richards Bay, SOUTH AFRICA SP South African Inst Phys HO Univ Zululand, Richards Bay Campus ID GAMMA-RAY PULSARS; LARGE-AREA TELESCOPE; POLAR CAPS; RADIO; EMISSION; CONSTRAINTS AB We modelled the radio and gamma-ray light curves of millisecond pulsars using outer gap, two-pole caustic, low-altitude slot gap, and pair-starved polar cap geometric models, combined with a semi-empirical conal radio model. We find that no model fits all cases, with the outer gap and two-pole caustic models providing best fits for comparable numbers of millisecond pulsar light curves. We find a broad distribution of best-fit inclination angles as well as a clustering at large observer angles. The outer gap model furthermore seems to require relatively larger inclination angles, while the two-pole caustic model hints at an inverse trend between inclination angle and pulsar spin-down luminosity. C1 [Venter, C.] North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa. [Johnson, T. J.; Grove, J. E.] Naval Res Lab, High Energy Space Environm Branch, Washington, DC 20375 USA. [Johnson, T. J.] Natl Acad Sci, Natl Res Council Res Associate, Washington, DC 20001 USA. [Harding, A. K.] NASA, Astrophys Sci Div, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. RP Venter, C (reprint author), North West Univ, Ctr Space Res, Potchefstroom Campus,Private Bag X6001, ZA-2520 Potchefstroom, South Africa. NR 26 TC 1 Z9 1 U1 0 U2 0 PU SOUTH AFRICAN INST PHYSICS PI LYNNWOOD RIDGE PA POSTNET STE 165, PRIVATE BAG X025, LYNNWOOD RIDGE, 0040, SOUTH AFRICA BN 978-0-620-62819-8 PY 2013 BP 385 EP 390 PG 6 WC Physics, Applied; Physics, Multidisciplinary SC Physics GA BE1GI UT WOS:000367879900065 ER PT J AU Sun, X Xie, GG AF Sun, Xin Xie, Geoffrey G. GP ACM TI Minimizing Network Complexity through Integrated Top-Down Design SO PROCEEDINGS OF THE 2013 ACM INTERNATIONAL CONFERENCE ON EMERGING NETWORKING EXPERIMENTS AND TECHNOLOGIES (CONEXT '13) LA English DT Proceedings Paper CT ACM International Conference on Emerging Networking Experiments and Technologies (CoNEXT) CY DEC 09-12, 2013 CL Santa Barbara, CA SP Assoc Comp Machinery, Assoc Comp Machinery SIGCOMM DE Network complexity; Top-down design; Reachability control; VLAN; IP address allocation AB The network design process today remains ad-hoc and largely complexity agnostic, often resulting in suboptimal networks characterized by excessive amounts of dependencies and commands in device configurations. The unnecessarily high configuration complexity can lead to a huge increase in both the amount of manual intervention required for managing the network and the likelihood of configuration errors, and thus must be avoided. In this paper we present an integrated top-down design approach and show how it can minimize the unnecessary configuration complexity in realizing user reachability control, a key network design objective that involves designing three distinct network elements: VLAN, IP address, and packet filter. Capitalizing on newly-developed abstractions, our approach integrates the design of the three elements into a unified framework by systematically modeling how the design of one element may impact the complexity of other elements. Our approach goes substantially beyond the current "divide-and-conquer" approach that designs each element in complete isolation, and enables minimizing the combined complexity of all elements. Specifically, two new optimization problems are formulated, and novel algorithms and heuristics are developed to solve the formulated problems. Evaluation on a large campus network shows that our approach can effectively reduce the packet filter complexity and VLAN trunking complexity by more than 85% and 70%, respectively, when compared to the ad-hoc approach currently used by the operators. C1 [Sun, Xin] Florida Int Univ, Sch Comp & Informat Sci, Miami, FL 33199 USA. [Xie, Geoffrey G.] Naval Postgrad Sch, Dept Comp Sci, Monterey, CA USA. RP Sun, X (reprint author), Florida Int Univ, Sch Comp & Informat Sci, Miami, FL 33199 USA. EM xinsun@cs.fiu.edu; xie@nps.edu NR 28 TC 0 Z9 0 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 978-1-4503-2101-3 PY 2013 BP 259 EP 270 DI 10.1145/2535372.2535376 PG 12 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems SC Computer Science GA BE4PQ UT WOS:000372056800027 ER PT J AU Tan, XL Hu, LM Zhang, GP Reed, AH Furukawa, Y AF Tan, Xiaoling Hu, Liming Zhang, Guoping Reed, Allen H. Furukawa, Yoko BE Zhaoyin, W Lee, JHW Jizhang, G Shuyou, C TI Settling Velocity and Fractality of Exopolymer-bearing Cohesive Sediments in Fresh and Salt Waters SO PROCEEDINGS OF THE 35TH IAHR WORLD CONGRESS, VOLS I AND II LA English DT Proceedings Paper CT 35th World Congress of the International-Association-for-Hydro-Environment-Engineering-and-Research (IAHR) CY SEP 08-13, 2013 CL Chengdu, PEOPLES R CHINA SP Int Assoc Hydro Environm Engn & Res DE Cohesive sediments; Exopolymer; Fractality; Salt water; Settling velocity ID CLAY-MINERALS; GUAR GUM; MONTMORILLONITE; FLOCCULATION; SUSPENSIONS; POLYSACCHARIDES; ADSORPTION; SMECTITE; SORPTION; KAOLIN AB As the main constituents of cohesive sediments in natural waters, clay particles always interact with the waterborne extracellular polymeric substances (EPS) exuded by microorganisms, or exopolymers, resulting in fractal clay-EPS flocs and hence change in sediment transport. During the transition of cohesive sediments from fresh water to salt water in the estuarine areas, the clay-to-clay and clay-to-EPS interactions will be influenced by the salinity change and thus the alternation to sediment transport. This study investigated the influence of a neutral exopolymer, guar gum, on the size, settling velocity, and fractality of clay flocs in both fresh and sea waters. To account for the variety of different clay types in natural cohesive sediments, four clays, namely kaolinite, illite, Ca- and Na-montmorillonite, were used as the inorganic constituents of flocs. To simulate the water chemistry in coastal areas, fresh water and salt water with a salinity of 35 ppt were used. Experimental results showed that the neutral EPS increased the floc size by promoting flocculation. In fresh water, the floc size increased from similar to 0.1-60 mu m to as large as similar to 100 mu m. The settling velocity of clay-EPS flocs was smaller than pure clay particles of the same size in both fresh and salt water, which may be caused by the reduced density. Due to flocculation, more clay particles are attached to flocs and hence become settable. The fractal dimension of flocs, which was estimated based on a simple floc size-settling velocity model, ranges from 1.763-1.861 for pure clay flocculi, 1.387-1.473 for the clay-EPS flocs, 1.861-1.954 for clay flocculi in salt water, and 1.436-1.905 for clay-EPS flocs in salt water. Both the floc size and settling velocity in salt water are greater than that in fresh water. The increased ion concentration also promotes the flocculation of clay particles and clay-EPS flocs by reducing the double layer thickness and cation bridging, which lead to an increase in floc density and fractal dimension. C1 [Tan, Xiaoling; Zhang, Guoping] Louisiana State Univ, Dept Civil & Environm Engn, Baton Rouge, LA 70803 USA. [Hu, Liming] Tsinghua Univ, State Key Lab Hydro Sci & Engn, Beijing 100084, Peoples R China. [Reed, Allen H.; Furukawa, Yoko] Naval Res Lab, Stennis Space Ctr, MS 39529 USA. RP Tan, XL (reprint author), Louisiana State Univ, Dept Civil & Environm Engn, Baton Rouge, LA 70803 USA. EM xtan3@lsu.edu; gehu@main.tsinghua.edu; gzhang@lsu.edu; Yoko.Furukawa@nrlssc.navy.mil NR 59 TC 0 Z9 0 U1 0 U2 1 PU TSINGHUA UNIV PI BEIJING PA DEPT BUILDING SCI, SCH ARCHITECTURE, SECRETARIAT ISHVAC07, BEIJING, 100084, PEOPLES R CHINA BN 978-7-302-33544-3 PY 2013 BP 3952 EP 3965 PG 14 WC Engineering, Civil; Water Resources SC Engineering; Water Resources GA BB5EZ UT WOS:000343761505019 ER PT J AU Yin, H Zhang, GP Reed, AH Furukawa, Y Liu, Z AF Yin, Hang Zhang, Guoping Reed, Allen H. Furukawa, Yoko Liu, Zhen BE Zhaoyin, W Lee, JHW Jizhang, G Shuyou, C TI Influence of Exopolymer Concentration and Hydrodynamic Forcing on the Size Distribution of Ca-Montmorillonite Flocs SO PROCEEDINGS OF THE 35TH IAHR WORLD CONGRESS, VOLS I AND II LA English DT Proceedings Paper CT 35th World Congress of the International-Association-for-Hydro-Environment-Engineering-and-Research (IAHR) CY SEP 08-13, 2013 CL Chengdu, PEOPLES R CHINA SP Int Assoc Hydro Environm Engn & Res DE Flocculation; Particle size distribution; Ca-montmorillonite and guar flocs; Floc breakdown; Multimodality ID FRACTAL STRUCTURE; ORGANIC-MATTER; GUAR GUM; AGGREGATION AB Cohesive sediments are abundant in natural waters, especially in estuarine and coastal environments where organic matter (particularly extracellular polymeric substances (EPS)) and high water turbulence can lead to the formation of clay-EPS flocs. This flocculation process affects the sediment transport and the geotechnical/geophysical properties of the bottom bed. In order to investigate how EPS concentration and hydrodynamic forcing affect sediment flocculation behavior (e.g., floc size distribution, floc breakdown), a pure clay mineral, Ca-montmorillonite, which is abundant in marine environment and a neutral EPS, guar gum, were used in laboratory to prepare flocs with varying EPS to clay weight ratio (E/C) and the hydrodynamic forcing in a laser diffraction-based particle size analyzer. Results indicate that the cohesive sediment flocs exhibit a multimodal particle size distribution (PSD) in all three flow conditions (i.e., laminar, transitional, and turbulent flows). Statistical deconvolution of the PSD curves suggest that the mixture suspensions consist of four discrete particle groups, consisting of primary particles, flocculi, microflocs, and macroflocs. Neutral guar in anionic Ca-montmorillonite suspensions causes the formation of macroflocs (> 200 mu m) and significantly increases the median particle size by several orders of magnitude when compared with the pure clay. However, adding more guar into the clay does not provide a proportional increase in the macrofloc fraction. Further analysis showed that when the E/C is similar to 2%, which is proposed as a critical value, macroflocs have the largest fraction of the entire population, while microflocs make up the smallest one. This demonstrates that smaller microflocs are most likely to form macroflocs at an E/C of 2% through flocculation, assisted and influenced by van der Waals forces, H bond, and other mechanisms as well as physical and chemical properties of Ca-montmorillonite and guar (e.g., specific surface area, surface charges, swelling properties, number of surface active sites, interlayer cations, and EPS polarity). Further, considering the effect of hydrodynamic forcing, macroflocs are weak and can easily breakdown into smaller microflocs when the flow conditions change from laminar to transition or turbulence, due to the breakage of weaker bonds inside the macroflocs. C1 [Yin, Hang; Zhang, Guoping; Liu, Zhen] Louisiana State Univ, Dept Civil & Environm Engn, Baton Rouge, LA 70803 USA. [Reed, Allen H.; Furukawa, Yoko] Naval Res Lab, Seafloor Sci Branch, Stennis Space Ctr, MS 39529 USA. RP Yin, H (reprint author), Louisiana State Univ, Dept Civil & Environm Engn, Baton Rouge, LA 70803 USA. EM hyin5@lsu.edu; gzhang@lsu.edu; Allen.Reed@nrlssc.navy.mil; Yoko.Furukawa@nrlssc.navy.mil; zliu21@lsu.edu NR 25 TC 0 Z9 0 U1 0 U2 2 PU TSINGHUA UNIV PI BEIJING PA DEPT BUILDING SCI, SCH ARCHITECTURE, SECRETARIAT ISHVAC07, BEIJING, 100084, PEOPLES R CHINA BN 978-7-302-33544-3 PY 2013 BP 4013 EP 4021 PG 9 WC Engineering, Civil; Water Resources SC Engineering; Water Resources GA BB5EZ UT WOS:000343761505025 ER PT J AU Vannicola, F Beard, R Koch, D Kubik, A Wilson, D White, J AF Vannicola, F. Beard, R. Koch, D. Kubik, A. Wilson, D. White, J. GP Inst Navigat TI GPS BLOCK IIF ATOMIC FREQUENCY STANDARD ANALYSIS SO PROCEEDINGS OF THE 45TH ANNUAL PRECISE TIME AND TIME INTERVAL SYSTEMS AND APPLICATIONS MEETING LA English DT Proceedings Paper CT 45th Annual Precise Time and Time Interval Systems and Applications Meeting (PTTI) CY DEC 02-05, 2013 CL Bellevue, WA AB The Naval Research Laboratory (NRL) currently has under life test four GPS Block IIF atomic frequency standards (AFS); two production Excelitas Rubidium Frequency Standards (RFS) and two production Symmetricom Digital Cesium Beam Frequency Standards (DCBFS). NRL, in conjunction with the GPS Directorate, GPS Block IIF prime contractor Boeing and the AFS manufacturers, has been conducting a life test on the GPS IIF AFS units. The RFS have been under test since August 2008 and the DCBFS have been intermittently tested since August 2004. There are currently four GPS Block IIF satellites on-orbit, three operate on a RFS and one operates on a DCBFS. This paper will provide a status of the current NRL life test and performance comparisons with the on-orbit AFS. C1 [Vannicola, F.; Beard, R.; Koch, D.; Wilson, D.] US Naval Res Lab, Washington, DC 20375 USA. RP Vannicola, F (reprint author), US Naval Res Lab, Washington, DC 20375 USA. NR 9 TC 2 Z9 2 U1 1 U2 1 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 USA PY 2013 BP 244 EP 249 PG 6 WC Engineering, Marine; Telecommunications SC Engineering; Telecommunications GA BC0TH UT WOS:000349532400032 ER PT B AU Lader, P Kristiansen, D Jensen, O Fredriksson, DW AF Lader, Pal Kristiansen, David Jensen, Osten Fredriksson, David W. GP ASME TI EXPERIMENTAL STUDY ON THE INTERACTION BETWEEN THE NET AND THE WEIGHT SYSTEM FOR A GRAVITY TYPE FISH FARM SO PROCEEDINGS OF THE ASME 32ND INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING - 2013, VOL 3 LA English DT Proceedings Paper CT 32nd ASME International Conference on Ocean, Offshore and Arctic Engineering CY JUN 09-14, 2013 CL Nantes, FRANCE SP ASME, Ocean Offshore & Arctic Engn Div ID AQUACULTURE; SALMON AB The escape of salmon from aquaculture farms is considered a major problem for the industry. Structural failure is the dominating cause for escapes. One major issue is the contact, and subsequent abrasion between the sinker tube chain and the net, which has caused several large-scale escapes over the past years. Model tests were performed in a tow tank at the United States Naval Academy to investigate at which combinations of waves and current the net deforms and comes in contact with the sinker tube chain. A model in scale 1:40 was used to represent a fish cage with a circumference of 120 meters and net depth of 40 meters. Building a physical model of such a compliant structure is inherently difficult, so particular attention was given to similarity issues. With the physical modelling approach, two different net design and four different weighting systems were tested. The experiments showed that the sinker tube with the fixed connection to the net performs better than individual weights both for cylindrical and conical nets. For cylindrical nets exposed to current only contact occurred at a velocity of 0.3 m/s when using weights and at a velocity of 0.5 m/s when using either the fixed or sliding sinker tube. The results for conical nets exposed to waves and current were less consistent. Weights (contact at 0.3 m/s) performed better than a sinker tube with sliding connection (contact due to waves only) but not as good as a fixed sinker tube (contact at 0.3 m/s). When exposed to waves and current contact occurred at a higher velocity and over a smaller area when using the conical net compared to the conventional cylindrical. For cylindrical nets contact occurred when exposed to waves alone, whereas for conical nets contact occurred at current velocities of 0 m/s, 0.15 m/s, and 0.3 m/s for the weights, the sliding sinker tube, and the fixed sinker tube respectively. C1 [Lader, Pal; Kristiansen, David; Jensen, Osten] SINTEF, Fisheries & Aquaculture, N-7034 Trondheim, Norway. [Fredriksson, David W.] US Naval Acad, Annapolis, MA USA. RP Lader, P (reprint author), SINTEF, Fisheries & Aquaculture, N-7034 Trondheim, Norway. NR 17 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 978-0-7918-5535-5 PY 2013 AR V003T05A019 PG 10 WC Engineering, Ocean; Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BD4DF UT WOS:000360514000071 ER PT B AU Li, X Soteriou, MC Kim, W Cohen, JM Herrmann, M Ham, F Kim, D Le, H Spyropoulos, JT AF Li, X. Soteriou, M. C. Kim, W. Cohen, J. M. Herrmann, M. Ham, F. Kim, D. Le, H. Spyropoulos, J. T. GP ASME TI HIGH FIDELITY SIMULATION OF THE SPRAY GENERATED BY A REALISTIC SWIRLING FLOW INJECTOR SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 1B LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst ID LIQUID JETS; CROSS-FLOW; BREAKUP; ATOMIZATION; EQUATIONS AB Practical aero-engine fuel injection systems are highly complicated, combining complex fuel atomizer and air swirling elements to achieve good fuel-air mixing as well as long residence time in order to enhance both combustion efficiency and stability. While detailed understanding of the multiphase flow processes occurring in a realistic injector has been limited due to the complex geometries and the challenges in near-field measurements, high fidelity, first principles simulation offers, for the first time, the potential for a comprehensive physics-based understanding. In this work, such simulations have been performed to investigate the spray atomization and subsequent droplet transport in a swirling air stream generated by a complex multi-nozzle/swirler combination. A Coupled Level Set and Volume Of Fluid (CLSVOF) approach is used to directly capture the liquid-gas interface and an embedded boundary (EB) method is applied to flexibly handle the complex injector geometry. The ghost fluid (GF) method is also used to facilitate simulations at realistic fuel-air density ratio. Adaptive mesh refinement (AMR) and Lagrangian droplet models are used to efficiently resolve the multi-scale processes. To alleviate the global constraint on the time-step imposed by locally activated AMR near liquid jets, a separate AMR simulation focusing on jet atomization was performed for relatively short physical time and the resulting Lagrangian droplets are coupled into another simulation on a uniform grid at larger time-steps. The high cost simulations were performed at the U.S. Department of Defense high performance computing facilities using over 5000 processors. Experiments at the same flow conditions were conducted at UTRC. The simulation details of flow velocity and vorticity due to the interaction of the fuel jet and swirling air are presented. The velocity magnitude is compared with experimental measurement at two downstream planes. The two-phase spray spreading is compared with experimental images and the flow details are further analyzed to enhance understanding of the complex physics. C1 [Li, X.; Soteriou, M. C.; Kim, W.; Cohen, J. M.] United Technol Res Ctr, E Hartford, CT 06108 USA. [Herrmann, M.] Arizona State Univ, Tempe, AZ 85281 USA. [Ham, F.; Kim, D.; Le, H.] Cascade Technol Inc, Palo Alto, CA 94303 USA. [Spyropoulos, J. T.] Naval Air Syst Command, Patuxent River, MD 20670 USA. [Spyropoulos, J. T.] JSF Program Off, Patuxent River, MD 20670 USA. RP Li, X (reprint author), United Technol Res Ctr, 411 Silver Lane, E Hartford, CT 06108 USA. NR 29 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 978-0-7918-5511-9 PY 2013 AR V002T04A070 PG 12 WC Engineering, Mechanical SC Engineering GA BD5DU UT WOS:000361341000070 ER PT B AU Mora, P Heeb, N Kastner, J Gutmark, EJ Kailasanath, K AF Mora, Pablo Heeb, Nick Kastner, Jeff Gutmark, Ephraim J. Kailasanath, K. GP ASME TI NEAR-AND FAR-FIELD PRESSURE SKEWNESS AND KURTOSIS IN HEATED SUPERSONIC JETS FROM ROUND AND CHEVRON NOZZLES SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 2 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst ID NOISE AB When the turbulent structures in the shear layer of highspeed jets travel at supersonic convective speeds relative to the ambient speed of sound, they radiate Mach waves that become the dominant component of the overall perceived noise. This is consistent with the OASPL in the far field reaching a maximum in same direction as the Mach wave angle. When the speed of the supersonic jet exceeds a certain level, the steepening of the wave-front in the near field produces a noise feature called "crackle." Both pressure wave steepening and crackle cannot be recognized in the spectrum of the pressure signal, but in the temporal waveform of the pressure. The statistics of the pressure signal and its time derivative, particularly skewness, have become standard measures of crackle in heated supersonic jets. Previous studies showed that it is possible to reduce far-field pressure skewness with the implementation of notched and chevron nozzles, and to mitigate Mach Wave radiation with secondary flow techniques. In this paper, we investigate the effect of chevrons on the pressure and dP/dt high-order statistics of a M-d = 1.5 converging-diverging round conical nozzle, both in the near and far fields. Cold and heated jets, T-o = 300 K and 600 K, are tested at over, design, and under-expanded conditions. Far-field results of the heated jet showed that chevrons effectively reduce elevated levels of skewness and kurtosis of the pressure and dP/dt. These reductions are remarkable especially around the Mach Wave angle, the region in which high-order statistics tend to propagate. Near-field results corroborated the effectiveness of chevrons in the skewness reduction. C1 [Mora, Pablo; Heeb, Nick; Kastner, Jeff; Gutmark, Ephraim J.] Univ Cincinnati, Sch Aerosp Syst, Cincinnati, OH 45221 USA. [Kailasanath, K.] US Naval Res Lab, Washington, DC USA. RP Mora, P (reprint author), Univ Cincinnati, Sch Aerosp Syst, Cincinnati, OH 45221 USA. EM morapa@mail.uc.edu; ephraim.gutmark@uc.edu; kailas@lcp.nrl.navy.mil 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 978-0-7918-5513-3 PY 2013 AR V002T01A030 PG 11 WC Engineering, Aerospace; Energy & Fuels; Engineering, Mechanical SC Engineering; Energy & Fuels GA BD5DW UT WOS:000361341300030 ER PT B AU Nelson, C Cain, A Le Du, Y Morris, P Spyropoulos, J AF Nelson, Chris Cain, Alan Le Du, Yong Morris, Philip Spyropoulos, John GP ASME TI Toward Efficient Computational Aeroacoustic Analysis of High Speed Jets SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 2 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst AB Recent improvements in the algorithms and associated processes have resulted in significant improvements in the users' ability to obtain aeroacoustics analysis of hot supersonic jets in a timely manner using only moderate computational resources. This paper discusses these approaches using the example of the Compressible High Order Parallel Acoustics (CHOPA) solver. The fundamental strategy looks to balance computational expense with the accuracy required to predict the most important effects. The objective is to resolve the larger eddies accurately, but exchanges the resolution of fine turbulent structures in return for decreased computational resource requirements. These strategies continue to be developed, along with the corresponding software. As the work progresses, the team expects additional improvements in the near future. C1 [Nelson, Chris; Cain, Alan] Innovat Technol Applicat Co LLC, Chesterfield, MO 63006 USA. [Le Du, Yong; Morris, Philip] Penn State Univ, University Pk, PA 16802 USA. [Spyropoulos, John] Naval Air Syst Command, Patuxent River, MD USA. RP Nelson, C (reprint author), Innovat Technol Applicat Co LLC, Chesterfield, MO 63006 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 978-0-7918-5513-3 PY 2013 AR V002T01A011 PG 14 WC Engineering, Aerospace; Energy & Fuels; Engineering, Mechanical SC Engineering; Energy & Fuels GA BD5DW UT WOS:000361341300011 ER PT B AU Ostanek, JK AF Ostanek, Jason K. GP ASME TI IMPROVING PIN-FIN HEAT TRANSFER PREDICTIONS USING ARTIFICIAL NEURAL NETWORKS SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 3A LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst ID PERFORMANCE AB In much of the public literature on pin-fin heat transfer, Nusselt number is presented as a function of Reynolds number using a power-law correlation. Power-law correlations typically have an accuracy of 20% while the experimental uncertainty of such measurements is typically between 5% and 10%. Additionally, the use of power-law correlations may require many sets of empirical constants to fully characterize heat transfer for different geometrical arrangements. In the present work, artificial neural networks were used to predict heat transfer as a function of streamwise spacing, spanwise spacing, pin-fin height, Reynolds number, and row position. When predicting experimental heat transfer data, the neural network was able to predict 73% of array-averaged heat transfer data to within 10% accuracy while published power-law correlations predicted 48% of the data to within 10% accuracy. Similarly, the neural network predicted 81% of row-averaged data to within 10% accuracy while 52% of the data was predicted to within 10% accuracy using power-law correlations. The present work shows that first-order heat transfer predictions may be simplified by using a single neural network model rather than combining or interpolating between power-law correlations. Furthermore, the neural network may be expanded to include additional pin-fin features of interest such as fillets, duct rotation, pin shape, pin inclination angle, and more making neural networks expandable and adaptable models for predicting pin-fin heat transfer. C1 Naval Surface Warfare Ctr, Carderock Div, Energy Convers R&D, Philadelphia, PA 19112 USA. RP Ostanek, JK (reprint author), Naval Surface Warfare Ctr, Carderock Div, Energy Convers R&D, Philadelphia, PA 19112 USA. NR 21 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 978-0-7918-5514-0 PY 2013 AR V03AT12A053 PG 11 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA BD5DX UT WOS:000361341400053 ER PT B AU Morscher, GN Baker, C Gyekenyesi, A Faucett, C Choi, S AF Morscher, Gregory N. Baker, Christopher Gyekenyesi, Andrew Faucett, Calvin Choi, Sung GP ASME TI DAMAGE DETECTION AND TENSILE PERFORMANCE OF VARIOUS SIC/SIC COMPOSITES IMPACTED WITH HIGH SPEED PROJECTILE SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 4 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst ID MATRIX COMPOSITES AB Implementation of ceramic matrix composites (CMCs) in jet engine applications necessitates the understanding of high velocity impact behavior. To this end, various melt-infiltrated SiC/SiC composites were impacted at room temperature at 350 m/s with different support systems and tensile tested to failure. Non-Destructive techniques including electrical resistance (ER) and flash thermography were used to examine the specimen pre and post impact. Some specimens were then post-tested in order to assess retained properties. For post tested specimens acoustic emission was used to monitor damage accumulation during the post test and leading up to ultimate failure. Microscopy was performed to correlate damage with impact and post-impact applied stress. The properties of the impacted specimens were assessed based on relevant damage zones. The results are also compared with similar studies performed on similar composites with stress-concentrators such as holes or notches and post-impact specimens tested in bending. C1 [Morscher, Gregory N.; Baker, Christopher] Univ Akron, Akron, OH 44325 USA. [Gyekenyesi, Andrew] Ohio Aerosp Inst, Cleveland, OH USA. [Faucett, Calvin; Choi, Sung] NAVAIR, Patuxent River, MD USA. RP Morscher, GN (reprint author), Univ Akron, Akron, OH 44325 USA. NR 12 TC 0 Z9 0 U1 2 U2 3 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5518-8 PY 2013 AR V004T02A010 PG 8 WC Education, Scientific Disciplines; Energy & Fuels; Engineering, Mechanical; Materials Science, Ceramics SC Education & Educational Research; Energy & Fuels; Engineering; Materials Science GA BD5JI UT WOS:000361499900010 ER PT B AU Wolfe, T Lee, YT Slipper, ME AF Wolfe, Tristan Lee, Yu-Tai Slipper, Michael E. GP ASME TI AN OFF-DESIGN PERFORMANCE PREDICTION MODEL FOR LOW-SPEED DOUBLE-DISCHARGE CENTRIFUGAL FANS SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 4 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst AB A generalized model for mapping the trend of the performance characteristics of a double-discharge centrifugal fan is developed based on the work by Casey and Robinson (C&R) which formulated compressor performance maps for tip-speed Mach numbers ranging from 0.4 to 2 using test data obtained from turbochargers with vaneless diffusers. The current paper focuses on low-speed applications for Mach number below 0.4. The C&R model uses four non-dimensional parameters at the design condition including the flow coefficient, the work input coefficient, the tip-speed Mach number and the polytropic efficiency, in developing a prediction model that requires limited geometrical knowledge of the centrifugal turbomachine. For the low-speed fan case, the C&R formulas are further modified to apply a low-speed, incompressible analysis. The effort described in this paper begins by comparing generalized results using efficiency data obtained from a series of fan measurements to that using the C&R model. For the efficiency map, the C&R model is found to heavily depend on the ratio of the flow coefficient at peak efficiency to that at the choke flow condition. Since choke flow is generally not applicable in the low-speed centrifugal fan operational environment, an alternate, but accurate estimation method based on fan free delivery derived from the fan test data is presented. Using this new estimation procedure, the modified C&R model predicts reasonably well using the double-discharge centrifugal fan data for high flow coefficients, but fails to correlate with the data for low flow coefficients. To address this undesirable characteristic, additional modifications to the C&R model are also presented for the fan application at low flow conditions. A Reynolds number correction is implemented in the work input prediction of the C&R model to account for low-speed test conditions. The new model provides reasonable prediction with the current fan data in both work input and pressure rise coefficients. Along with the developments for the efficiency and work input coefficient maps, the use of fan shut-off and free delivery conditions are also discussed for low-speed applications. C1 [Wolfe, Tristan; Slipper, Michael E.] Naval Surface Warfare Ctr, Carderock Div, Ships Syst Engn Stn, Philadelphia, PA 19112 USA. [Lee, Yu-Tai] Naval Surface Warfare Ctr, Carderock Div, Bethesda, MD USA. RP Wolfe, T (reprint author), Naval Surface Warfare Ctr, Carderock Div, Ships Syst Engn Stn, Philadelphia, PA 19112 USA. NR 14 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 978-0-7918-5518-8 PY 2013 AR V004T10A008 PG 11 WC Education, Scientific Disciplines; Energy & Fuels; Engineering, Mechanical; Materials Science, Ceramics SC Education & Educational Research; Energy & Fuels; Engineering; Materials Science GA BD5JI UT WOS:000361499900077 ER PT B AU Wright, JM Faucett, DC Ayre, M Choi, SR AF Wright, Jennifer M. Faucett, D. Calvin Ayre, Matthew Choi, Sung R. GP ASME TI FOREIGN OBJECT DAMAGE (FOD) OF CERAMIC THERMAL BARRIER COATINGS (TBCs) IN GAS TURBINE AIRFOILS SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 4 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst DE Thermal barrier coatings (TBCs); foreign object damage (FOD); ballistic impact testing; coating delamination; delamination analysis ID IMPACT RESISTANCE; INELASTIC DEFORMATION; SIC/SIC COMPOSITES; EROSION; BEHAVIOR; MECHANISMS; PROJECTILES AB Ceramic thermal barrier coatings (TBCs),attributed to their inherent brittle nature, are highly susceptible to damage by impacting foreign particles when the impacting kinetic energy exceeds certain limits. The damage is termed foreign object damage (FOD) in related turbine components and results in various issues/problems to coatings as well as to substrates from delamination to spallation to cracking to catastrophic failure depending on the severity of impact. The FOD testing was performed using a ballistic impact gun for turbine airfoil components coated with 7% yittria stabilized zirconia (7YSZ) by electron beam physical vapor deposit (EB-PVD). A range of impact velocities up to Mach 1 was applied with three different projectile materials of steel, silicon nitride, and glass balls. The damage was assessed and characterized in terms of impact velocity, projectile material, and remaining life of turbine components. An energy-balance approach was made to develop a model to predict delamination of the TBCs upon impact. C1 [Wright, Jennifer M.; Faucett, D. Calvin; Ayre, Matthew; Choi, Sung R.] Naval Air Syst Command, Patuxent River, MD 20670 USA. RP Choi, SR (reprint author), Naval Air Syst Command, Patuxent River, MD 20670 USA. EM sung.choi1@navy.mil NR 29 TC 0 Z9 0 U1 1 U2 3 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5518-8 PY 2013 AR V004T02A006 PG 10 WC Education, Scientific Disciplines; Energy & Fuels; Engineering, Mechanical; Materials Science, Ceramics SC Education & Educational Research; Energy & Fuels; Engineering; Materials Science GA BD5JI UT WOS:000361499900006 ER PT B AU Xue, YB Abdi, F Morscher, GN Choi, S AF Xue, Yibin Abdi, Frank Morscher, Gregory N. Choi, Sung GP ASME TI NON-DESTRUCTIVE CERAMIC MATRIX COMPOSITE IMPACT MODELING VALIDATION SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 4 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst DE Computation of Equivalent Electrical Properties; Ceramic Matrix Composite; Foreign object damage (POD) analysis; Ballistic impact simulation; SiC/SiC; Interphase ID DAMAGE; CRACKING; CREEP AB Ceramic matrix composite (CMC) materials technology is of fundamental importance to gas turbine engine application. POD (foreign Object Damage) in CMC components can result in component localized damage and a loss of post-impact performance. CMC impact generates a varying degree of damage from localized surface damage to complete penetration depending on the severity of impact events. Ceramic Composite equivalent electrical properties are computed based on simplified Multi-scale micromechanics equations. Electrical resistance and/or conductivity are computed utilizing the constituent material properties, effective medium, and percolation theories. Ceramic composite electrical properties simulation requires the algorithm development that combines the effective medium and percolation theories. A physically based percolation model is implemented to characterize the effective electrical conductivity of heterogeneous composites by means of the combination of effective medium (EM) and percolation equations with universal exponents. It is shown that the present model correlates well with the experimental electrical resistivity and acoustic emission data. The change in electrical resistivity after impact is compared with test data of a SA-SiC fiber reinforced SiC matrix composite. The predicted damage after impact and the trend of damage volume correlated well with experimental observations of damage shape and reduction in electrical resistance. Thus, an empirical relationship between damage volume and mechanisms and electrical resistance are developed and presented. C1 [Xue, Yibin; Abdi, Frank] AlphaSTAR Corp, Long Beach, CA 90804 USA. [Morscher, Gregory N.] Univ Akron, Akron, OH 44325 USA. [Choi, Sung] NAVAIR, Ratuxent River, MD USA. RP Xue, YB (reprint author), AlphaSTAR Corp, Long Beach, CA 90804 USA. NR 19 TC 0 Z9 0 U1 1 U2 5 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5518-8 PY 2013 AR V004T02A004 PG 9 WC Education, Scientific Disciplines; Energy & Fuels; Engineering, Mechanical; Materials Science, Ceramics SC Education & Educational Research; Energy & Fuels; Engineering; Materials Science GA BD5JI UT WOS:000361499900004 ER PT B AU Gannon, AJ Hobson, GV Shea, MJ Clay, CS Millsaps, KT AF Gannon, Anthony J. Hobson, Garth V. Shea, Michael J. Clay, Christopher S. Millsaps, Knox T. GP ASME TI MEMS-SCALE TURBOMACHINERY BASED VACUUM ROUGHING PUMP SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 5A LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst AB This study forms part of a program to develop a microelectro-mechanical-systems (MEMS) scale turbomachinery based vacuum pump and investigates the roughing portion of such a system. Such a machine would have many radial stages with the exhaust stages operating near atmospheric conditions while the inlet stages operate at near vacuum conditions. In low vacuum such as those to the inlet of a roughing pump the flow can still be treated as a continuum however the no-slip boundary condition is not accurate. The Knudsen number becomes a dominant non-dimensional parameter in these machines due to their small size and low pressures. As the Knudsen number increases slip flow becomes present at the walls. The study begins with a basic overview on implementing the slip wall boundary condition in a commercial code by specifying the wall shear stress based on the mean-free-path of the gas molecules. This is validated against an available micro-Poiseuille classical solution at Knudsen numbers between 0.001-0.1 with reasonable agreement found. The method of specifying the wall-shear stress is then applied to a generic MEMS scale roughing pump stage that consists of two stators and a rotor operating at a nominal absolute pressure of 500 Pa. The zero flow case was simulated in all cases as the pump down time for these machines is small due to the small volume being evacuated. Initial transient two-dimensional simulations are used to evaluate three boundary conditions, classical no-slip, specified-shear and slip-flow. It is found that the stage pressure rise increased as the flow began to slip at the walls. In addition it was found that at lower pressures the pure slip boundary condition resulted in very similar predictions to the specified shear simulations. As the specified-shear simulations are computationally expensive it is reasonable to use slip-flow boundary conditions. This approach was used to perform three-dimensional simulations of the stage. Again the stage pressure increased when slip-flow was present compared with the classical no-slip boundaries. A characteristic of MEMS scale turbomachinery are the large relative tip gaps requiring three-dimensional simulations. A tip gap sensitivity study was performed and it was found that when no-slip boundaries were present the pressure ratio increased significantly with decreasing tip gap. When slip-flow boundaries were present this relationship was far weaker. C1 [Gannon, Anthony J.; Hobson, Garth V.; Shea, Michael J.; Clay, Christopher S.; Millsaps, Knox T.] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Gannon, AJ (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA. RI Gannon, Anthony/E-9598-2017 OI Gannon, Anthony/0000-0002-4602-4396 NR 6 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 978-0-7918-5519-5 PY 2013 AR V05AT23A024 PG 8 WC Engineering, Marine; Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BD5JJ UT WOS:000361500100048 ER PT B AU Slogar, G Prus, G Canilang, B AF Slogar, Gerrick Prus, Gary Canilang, Benjamin GP ASME TI ETF40B 3rd Vane Field Investigation, Root Cause and Corrective Action SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 5A LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst AB Results from an engineering investigation, including findings, root cause and corrective action of an ETF40B compressor incident, are presented in this paper. Vericor's ETF40B is used to power US NAVY Landing Craft Air Cushion (LCAC) vehicles that have undergone the Service Life Extension Program (SLEP). This paper discusses the initial review of an engine incident, the results of the engineering investigation that led to identifying root cause and the successful validation testing providing fleet corrective action. This paper will present the history of the investigation, the metallurgical analysis findings, the results of finite element stress analysis and investigative testing performed on the vane. The paper will conclude with the testing conducted to verify the design solution and how the final field and production compressor changes were incorporated. C1 [Slogar, Gerrick] Vericor Power Syst Inc, Alpharetta, GA 30022 USA. [Prus, Gary] Parametr Solut Inc, Jupiter, FL 33477 USA. [Canilang, Benjamin] Naval Surface Warfare Ctr, Carderock Div, Branch 935, Philadelphia, PA 20817 USA. RP Slogar, G (reprint author), Vericor Power Syst Inc, 3625 Brookside Pkwy Suite 500, Alpharetta, GA 30022 USA. EM Gerrick.Slogar@Vericor.com; gpp@psnet.com; beniannin.calilang@Navy.Mil NR 0 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 978-0-7918-5519-5 PY 2013 AR V05AT22A002 PG 6 WC Engineering, Marine; Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BD5JJ UT WOS:000361500100021 ER PT B AU Im, JH Shin, JH Hobson, GV Song, SJ Millsaps, KT AF Im, Ju Hyun Shin, Ju Hyun Hobson, Garth V. Song, Seung Jin Millsaps, Knox T. GP ASME TI EFFECT OF LEADING EDGE ROUGHNESS AND REYNOLDS NUMBER ON COMPRESSOR PROFILE LOSS SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 6A LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst ID SURFACE-ROUGHNESS; CASCADE; SEPARATION; FLOW AB An experimental investigation has been conducted to characterize the influence of leading edge roughness and Reynolds number on compressor cascade profile loss. Tests have been conducted in a low-speed linear compressor cascade at Reynolds numbers between 210,000 and 640,000. Blade loading and loss have been measured with pressure taps and pneumatic probes. In addition, a two-component laser-doppler velocimeter (LDV) has been used to measure the boundary layer velocity profiles and turbulence levels at various chordwise locations near the blade suction surface. The "smooth" blade has a centerline-averaged roughness (R-a) of 0.62 mu m. The "rough" blade is roughened by covering the leading edge of the "smooth" blade, including 2% of the pressure side and 2% of the suction side, with a 100 mu m-thick tape with a roughness R-a of 4.97 urn. At Reynolds numbers ranging from 210,000 to 380,000, the leading edge roughness decreases loss slightly. At Reynolds number of 210,000, the leading edge roughness reduces the size of the suction side laminar separation bubble and turbulence level in the turbulent boundary layer after reattachment. Thus, the leading edge roughness reduces displacement and momentum thicknesses as well as profile loss at Reynolds number of 210,000. However, the same leading edge roughness increases loss significantly for Re = 450,000 similar to 640,000. At Reynolds number of 640,000, the leading edge roughness decreases the magnitude of the favorable pressure gradient for axial chordwise locations less than 0.41 and induces turbulent separation for axial chordwise locations greater than 0.63, drastically increasing loss. Thus, roughness limited to the leading edge still has a profound effect on the compressor flow field. C1 [Im, Ju Hyun; Shin, Ju Hyun; Song, Seung Jin] Seoul Natl Univ, Mech & Aerosp Engn, Seoul 151744, South Korea. [Hobson, Garth V.; Millsaps, Knox T.] Naval Postgrad Sch, Mech & Aerosp Engn, Monterey, CA 93943 USA. RP Im, JH (reprint author), Seoul Natl Univ, Mech & Aerosp Engn, Seoul 151744, South Korea. NR 18 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 978-0-7918-5522-5 PY 2013 AR V06AT35A034 PG 10 WC Engineering, Mechanical SC Engineering GA BD5JL UT WOS:000361500500034 ER PT B AU Volino, RJ Galvin, CD Ibrahim, MB AF Volino, Ralph J. Galvin, Christopher D. Ibrahim, Mounir B. GP ASME TI EFFECTS OF PERIODIC UNSTEADINESS ON SECONDARY FLOWS IN HIGH PRESSURE TURBINE PASSAGES SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 6C LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 03-07, 2013 CL San Antonio, TX SP Int Gas Turbine Inst ID ENDWALL; BLADE; TURBULENCE; CASCADE AB Secondary flow losses were investigated experimentally in a linear cascade of high pressure turbine blades in a low speed wind tunnel. Periodic wakes were generated with moving rods upstream of the cascade to simulate the effect of wakes from upstream vanes in an engine. Velocities, turbulence levels and turbulence spectra were documented downstream of the wakes generated by the upstream rods and downstream of the cascade airfoils. Pressure distributions were documented on the airfoils at the midspan and near the tip. Total pressure loss through the passage was measured at the midspan and in the endwall boundary layer. Cases were documented with and without upstream wakes at a Reynolds number of 30,000 based on inlet velocity and axial chord. An additional case was acquired at Re=60,000 without wakes. The effects of wakes and Reynolds number on the pressure distribution on the airfoils were small. In the cases without wakes, total pressure losses were 27% higher at the lower Reynolds number due to thicker boundary layers. Upstream wakes cause an increase of about 80% in total pressure losses at the midspan and a 36% increase near the endwall. Much of this is due to the loss associated with the upstream wakes themselves, but with this direct effect subtracted the losses are still 20% higher in the case with wakes at the midspan with local increases comparable near the endwall. C1 [Volino, Ralph J.; Galvin, Christopher D.] US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA. [Ibrahim, Mounir B.] Cleveland State Univ, Dept Mech Engn, Cleveland, OH 44115 USA. RP Volino, RJ (reprint author), US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA. EM volino@usna.edu NR 27 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 978-0-7918-5524-9 PY 2013 AR V06CT42A042 PG 11 WC Engineering, Mechanical SC Engineering GA BD5XF UT WOS:000361866100076 ER PT B AU Meyer, R AF Meyer, Ramsey GP IEEE TI Simple Messaging and Collaboration System for Disaster Environments SO PROCEEDINGS OF THE THIRD 2013 IEEE GLOBAL HUMANITARIAN TECHNOLOGY CONFERENCE (GHTC 2013) LA English DT Proceedings Paper CT 3rd IEEE Global Humanitarian Technology Conference (GHTC) CY OCT 20-23, 2013 CL San Jose, CA SP IEEE, IEEE Reg 6, Inst Elect & Elect Engineers, San Francisco Bay Area Council, IEEE Humanitarian Activities AdHoc Comm, IEEE Seattle Sect, US Agcy Int Dev, Community Solut Initiat, IEEE Fdn, IEEE Special Interest Grp Humanitarian Technol, Coughlin Associates, IEEE Components, Packaging & Mfg Technol Soc, IEEE USA, IEEE Comm Earth Observat, Engn Change DE Disaster response; disaster relief; communications; SMS; first responders; NGO; non-governmental organizations; collaboration; communication AB A novel communication system for use by all first responders in a given disaster response activity is described. The system is based primarily on SMS messaging technologies and either indigenous mobile phone service providers or mobile phone service brought in via cellular-on-wheels (COWs), UAVs, rapidly deployed towers, etc. End users use either their own cell phones, running a native SMS application, or low-cost phones that are distributed by a large non-governmental organization, such as UN OCHA. If a proprietary network is set up, SIM cards are distributed to end users to allow access to the network, or administrators will explicitly allow access via a phone's IMEI number or other access control methods. C1 Naval Postgrad Sch, Dept Informat Sci, Monterey, CA 93943 USA. RP Meyer, R (reprint author), Naval Postgrad Sch, Dept Informat Sci, Monterey, CA 93943 USA. EM rrmeyer@nps.edu NR 17 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-2401-1; 978-1-4799-2402-8 PY 2013 BP 382 EP 387 PG 6 WC Engineering, Multidisciplinary SC Engineering GA BC1BC UT WOS:000349918000072 ER PT J AU Shank, C Patel, CKN Ahearne, JF Back, C Colella, P Dahlburg, J Falcone, R Gupta, Y Haxton, W Hopkins, MD Jeanloz, R Kammerdiener, J Martin, W Murnane, M Nickell, RE Peddicord, K Peercy, PS Rollett, A Rosner, R Selden, R Shea, K Sullivan, F Was, G Yelick, K Shaw, A Rowberg, R McGee, JP Weidman, S Hamilton, L Whitaker, E Lyons, JW Canizares, CR Corotis, RB Francisco, JS Gear, CW Hatch, HJ Lanzerotti, LJ Reichmanis, E Schwartz, LH Shank, CV Streit, DC McGee, J Mozhi, A Butner, C AF Shank, Charles Patel, C. Kumar N. Ahearne, John F. Back, Christina Colella, Phillip Dahlburg, Jill Falcone, Roger Gupta, Yogendra Haxton, Wick Hopkins, Michael D. Jeanloz, Raymond Kammerdiener, John Martin, William Murnane, Margaret Nickell, Robert E. Peddicord, Kenneth Peercy, Paul S. Rollett, Anthony Rosner, Robert Selden, Robert Shea, Kenneth Sullivan, Francis Was, Gary Yelick, Katherine Shaw, Alan Rowberg, Richard McGee, James P. Weidman, Scott Hamilton, Liza Whitaker, Eric Lyons, John W. Canizares, Claude R. Corotis, Ross B. Francisco, Joseph S. Gear, C. William Hatch, Henry J. Lanzerotti, Louis J. Reichmanis, Elsa Schwartz, Lyle H. Shank, Charles V. Streit, Dwight C. McGee, James Mozhi, Arul Butner, Cy CA Dept Energy Lab Assessments Board Div Engn Phys Sci Natl Acad GP Natl Res Council TI The Quality of Science and Engineering at the NNSA National Security Laboratories Summary SO QUALITY OF SCIENCE AND ENGINEERING AT THE NNSA NATIONAL SECURITY LABORATORIES LA English DT Editorial Material; Book Chapter C1 [Shank, Charles; Shank, Charles V.] Howard Hughes Med Inst, New Haven, CT 06510 USA. [Patel, C. Kumar N.] Pranalytica Inc, Santa Monica, CA USA. [Ahearne, John F.] Sigma Xi, Res Triangle Pk, NC USA. [Back, Christina] Gen Atom Co, San Diego, CA 92138 USA. [Colella, Phillip; Yelick, Katherine] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Dahlburg, Jill] Naval Res Lab, Washington, DC 20375 USA. [Falcone, Roger; Haxton, Wick; Jeanloz, Raymond] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Gupta, Yogendra] Washington State Univ, Pullman, WA 99164 USA. [Hopkins, Michael D.; Rosner, Robert] Univ Chicago, Chicago, IL 60637 USA. [Martin, William; Was, Gary] Univ Michigan, Ann Arbor, MI 48109 USA. [Murnane, Margaret; Corotis, Ross B.] Univ Colorado, Boulder, CO 80309 USA. [Peddicord, Kenneth] Texas A&M Univ, College Stn, TX 77843 USA. [Peercy, Paul S.] Univ Wisconsin, Madison, WI 53706 USA. [Rollett, Anthony] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Shea, Kenneth] Univ Calif Irvine, Irvine, CA USA. [Lyons, John W.] US Army Res Lab, Los Angeles, CA USA. [Canizares, Claude R.] MIT, Cambridge, MA 02139 USA. [Francisco, Joseph S.] Purdue Univ, W Lafayette, IN 47907 USA. [Gear, C. William] Univ Illinois, Urbana, IL 61801 USA. [Hatch, Henry J.] US Army, Los Angeles, CA USA. [Lanzerotti, Louis J.] New Jersey Inst Technol, Newark, NJ 07102 USA. [Reichmanis, Elsa] Georgia Inst Technol, Atlanta, GA 30332 USA. [Schwartz, Lyle H.] Air Force Off Sci Res, Los Angeles, CA USA. [Streit, Dwight C.] Univ Calif Los Angeles, Los Angeles, CA USA. RP Shank, C (reprint author), Howard Hughes Med Inst, New Haven, CT 06510 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU NATL ACADEMIES PRESS PI WASHINGTON PA 2101 CONSTITUTION AVE, WASHINGTON, DC 20418 USA BN 978-0-309-29090-6 PY 2013 BP 1 EP 7 PG 7 WC Engineering, Multidisciplinary SC Engineering GA BC9BO UT WOS:000356274800001 ER PT J AU Shank, C Patel, CKN Ahearne, JF Back, C Colella, P Dahlburg, J Falcone, R Gupta, Y Haxton, W Hopkins, MD Jeanloz, R Kammerdiener, J Martin, W Murnane, M Nickell, RE Peddicord, K Peercy, PS Rollett, A Rosner, R Selden, R Shea, K Sullivan, F Was, G Yelick, K Shaw, A Rowberg, R McGee, JP Weidman, S Hamilton, L Whitaker, E Lyons, JW Canizares, CR Corotis, RB Francisco, JS Gear, CW Hatch, HJ Lanzerotti, LJ Reichmanis, E Schwartz, LH Shank, CV Streit, DC McGee, J Mozhi, A Butner, C AF Shank, Charles Patel, C. Kumar N. Ahearne, John F. Back, Christina Colella, Phillip Dahlburg, Jill Falcone, Roger Gupta, Yogendra Haxton, Wick Hopkins, Michael D. Jeanloz, Raymond Kammerdiener, John Martin, William Murnane, Margaret Nickell, Robert E. Peddicord, Kenneth Peercy, Paul S. Rollett, Anthony Rosner, Robert Selden, Robert Shea, Kenneth Sullivan, Francis Was, Gary Yelick, Katherine Shaw, Alan Rowberg, Richard McGee, James P. Weidman, Scott Hamilton, Liza Whitaker, Eric Lyons, John W. Canizares, Claude R. Corotis, Ross B. Francisco, Joseph S. Gear, C. William Hatch, Henry J. Lanzerotti, Louis J. Reichmanis, Elsa Schwartz, Lyle H. Shank, Charles V. Streit, Dwight C. McGee, James Mozhi, Arul Butner, Cy CA Dept Energy Lab Assessments Board Div Engn Phys Sci Natl Acad GP Natl Res Council TI The Quality of Science and Engineering at the NNSA National Security Laboratories Introduction SO QUALITY OF SCIENCE AND ENGINEERING AT THE NNSA NATIONAL SECURITY LABORATORIES LA English DT Editorial Material; Book Chapter C1 [Shank, Charles; Shank, Charles V.] Howard Hughes Med Inst, New Haven, CT 06510 USA. [Patel, C. Kumar N.] Pranalytica Inc, Santa Monica, CA USA. [Ahearne, John F.] Sigma Xi, Res Triangle Pk, NC USA. [Back, Christina] Gen Atom Co, San Diego, CA 92138 USA. [Colella, Phillip; Yelick, Katherine] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Dahlburg, Jill] Naval Res Lab, Washington, DC 20375 USA. [Falcone, Roger; Haxton, Wick; Jeanloz, Raymond] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Gupta, Yogendra] Washington State Univ, Pullman, WA 99164 USA. [Hopkins, Michael D.; Rosner, Robert] Univ Chicago, Chicago, IL 60637 USA. [Martin, William; Was, Gary] Univ Michigan, Ann Arbor, MI 48109 USA. [Murnane, Margaret; Corotis, Ross B.] Univ Colorado, Boulder, CO 80309 USA. [Peddicord, Kenneth] Texas A&M Univ, College Stn, TX 77843 USA. [Peercy, Paul S.] Univ Wisconsin, Madison, WI 53706 USA. [Rollett, Anthony] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Shea, Kenneth] Univ Calif Irvine, Irvine, CA USA. [Lyons, John W.] US Army Res Lab, Los Angeles, CA USA. [Canizares, Claude R.] MIT, Cambridge, MA 02139 USA. [Francisco, Joseph S.] Purdue Univ, W Lafayette, IN 47907 USA. [Gear, C. William] Univ Illinois, Urbana, IL 61801 USA. [Hatch, Henry J.] US Army, Los Angeles, CA USA. [Lanzerotti, Louis J.] New Jersey Inst Technol, Newark, NJ 07102 USA. [Reichmanis, Elsa] Georgia Inst Technol, Atlanta, GA 30332 USA. [Schwartz, Lyle H.] Air Force Off Sci Res, Los Angeles, CA USA. [Streit, Dwight C.] Univ Calif Los Angeles, Los Angeles, CA USA. RP Shank, C (reprint author), Howard Hughes Med Inst, New Haven, CT 06510 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU NATL ACADEMIES PRESS PI WASHINGTON PA 2101 CONSTITUTION AVE, WASHINGTON, DC 20418 USA BN 978-0-309-29090-6 PY 2013 BP 8 EP 12 PG 5 WC Engineering, Multidisciplinary SC Engineering GA BC9BO UT WOS:000356274800002 ER PT J AU Shank, C Patel, CKN Ahearne, JF Back, C Colella, P Dahlburg, J Falcone, R Gupta, Y Haxton, W Hopkins, MD Jeanloz, R Kammerdiener, J Martin, W Murnane, M Nickell, RE Peddicord, K Peercy, PS Rollett, A Rosner, R Selden, R Shea, K Sullivan, F Was, G Yelick, K Shaw, A Rowberg, R McGee, JP Weidman, S Hamilton, L Whitaker, E Lyons, JW Canizares, CR Corotis, RB Francisco, JS Gear, CW Hatch, HJ Lanzerotti, LJ Reichmanis, E Schwartz, LH Shank, CV Streit, DC McGee, J Mozhi, A Butner, C AF Shank, Charles Patel, C. Kumar N. Ahearne, John F. Back, Christina Colella, Phillip Dahlburg, Jill Falcone, Roger Gupta, Yogendra Haxton, Wick Hopkins, Michael D. Jeanloz, Raymond Kammerdiener, John Martin, William Murnane, Margaret Nickell, Robert E. Peddicord, Kenneth Peercy, Paul S. Rollett, Anthony Rosner, Robert Selden, Robert Shea, Kenneth Sullivan, Francis Was, Gary Yelick, Katherine Shaw, Alan Rowberg, Richard McGee, James P. Weidman, Scott Hamilton, Liza Whitaker, Eric Lyons, John W. Canizares, Claude R. Corotis, Ross B. Francisco, Joseph S. Gear, C. William Hatch, Henry J. Lanzerotti, Louis J. Reichmanis, Elsa Schwartz, Lyle H. Shank, Charles V. Streit, Dwight C. McGee, James Mozhi, Arul Butner, Cy CA Dept Energy Lab Assessments Board Div Engn Phys Sci Natl Acad GP Natl Res Council TI Nuclear Weapons Design SO QUALITY OF SCIENCE AND ENGINEERING AT THE NNSA NATIONAL SECURITY LABORATORIES LA English DT Article; Book Chapter C1 [Shank, Charles; Shank, Charles V.] Howard Hughes Med Inst, New Haven, CT 06510 USA. [Patel, C. Kumar N.] Pranalytica Inc, Santa Monica, CA USA. [Ahearne, John F.] Sigma Xi, Res Triangle Pk, NC USA. [Back, Christina] Gen Atom Co, San Diego, CA 92138 USA. [Colella, Phillip; Yelick, Katherine] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Dahlburg, Jill] Naval Res Lab, Washington, DC 20375 USA. [Falcone, Roger; Haxton, Wick; Jeanloz, Raymond] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Gupta, Yogendra] Washington State Univ, Pullman, WA 99164 USA. [Hopkins, Michael D.; Rosner, Robert] Univ Chicago, Chicago, IL 60637 USA. [Martin, William; Was, Gary] Univ Michigan, Ann Arbor, MI 48109 USA. [Murnane, Margaret; Corotis, Ross B.] Univ Colorado, Boulder, CO 80309 USA. [Peddicord, Kenneth] Texas A&M Univ, College Stn, TX 77843 USA. [Peercy, Paul S.] Univ Wisconsin, Madison, WI 53706 USA. [Rollett, Anthony] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Shea, Kenneth] Univ Calif Irvine, Irvine, CA USA. [Lyons, John W.] US Army Res Lab, Los Angeles, CA USA. [Canizares, Claude R.] MIT, Cambridge, MA 02139 USA. [Francisco, Joseph S.] Purdue Univ, W Lafayette, IN 47907 USA. [Gear, C. William] Univ Illinois, Urbana, IL 61801 USA. [Hatch, Henry J.] US Army, Los Angeles, CA USA. [Lanzerotti, Louis J.] New Jersey Inst Technol, Newark, NJ 07102 USA. [Reichmanis, Elsa] Georgia Inst Technol, Atlanta, GA 30332 USA. [Schwartz, Lyle H.] Air Force Off Sci Res, Los Angeles, CA USA. [Streit, Dwight C.] Univ Calif Los Angeles, Los Angeles, CA USA. RP Shank, C (reprint author), Howard Hughes Med Inst, New Haven, CT 06510 USA. NR 4 TC 0 Z9 0 U1 2 U2 2 PU NATL ACADEMIES PRESS PI WASHINGTON PA 2101 CONSTITUTION AVE, WASHINGTON, DC 20418 USA BN 978-0-309-29090-6 PY 2013 BP 13 EP 18 PG 6 WC Engineering, Multidisciplinary SC Engineering GA BC9BO UT WOS:000356274800003 ER PT J AU Shank, C Patel, CKN Ahearne, JF Back, C Colella, P Dahlburg, J Falcone, R Gupta, Y Haxton, W Hopkins, MD Jeanloz, R Kammerdiener, J Martin, W Murnane, M Nickell, RE Peddicord, K Peercy, PS Rollett, A Rosner, R Selden, R Shea, K Sullivan, F Was, G Yelick, K Shaw, A Rowberg, R McGee, JP Weidman, S Hamilton, L Whitaker, E Lyons, JW Canizares, CR Corotis, RB Francisco, JS Gear, CW Hatch, HJ Lanzerotti, LJ Reichmanis, E Schwartz, LH Shank, CV Streit, DC McGee, J Mozhi, A Butner, C AF Shank, Charles Patel, C. Kumar N. Ahearne, John F. Back, Christina Colella, Phillip Dahlburg, Jill Falcone, Roger Gupta, Yogendra Haxton, Wick Hopkins, Michael D. Jeanloz, Raymond Kammerdiener, John Martin, William Murnane, Margaret Nickell, Robert E. Peddicord, Kenneth Peercy, Paul S. Rollett, Anthony Rosner, Robert Selden, Robert Shea, Kenneth Sullivan, Francis Was, Gary Yelick, Katherine Shaw, Alan Rowberg, Richard McGee, James P. Weidman, Scott Hamilton, Liza Whitaker, Eric Lyons, John W. Canizares, Claude R. Corotis, Ross B. Francisco, Joseph S. Gear, C. William Hatch, Henry J. Lanzerotti, Louis J. Reichmanis, Elsa Schwartz, Lyle H. Shank, Charles V. Streit, Dwight C. McGee, James Mozhi, Arul Butner, Cy CA Dept Energy Lab Assessments Board Div Engn Phys Sci Natl Acad GP Natl Res Council TI Systems Engineering and Aging SO QUALITY OF SCIENCE AND ENGINEERING AT THE NNSA NATIONAL SECURITY LABORATORIES LA English DT Article; Book Chapter C1 [Shank, Charles; Shank, Charles V.] Howard Hughes Med Inst, New Haven, CT 06510 USA. [Patel, C. Kumar N.] Pranalytica Inc, Santa Monica, CA USA. [Ahearne, John F.] Sigma Xi, Res Triangle Pk, NC USA. [Back, Christina] Gen Atom Co, San Diego, CA 92138 USA. [Colella, Phillip; Yelick, Katherine] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Dahlburg, Jill] Naval Res Lab, Washington, DC 20375 USA. [Falcone, Roger; Haxton, Wick; Jeanloz, Raymond] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Gupta, Yogendra] Washington State Univ, Pullman, WA 99164 USA. [Hopkins, Michael D.; Rosner, Robert] Univ Chicago, Chicago, IL 60637 USA. [Martin, William; Was, Gary] Univ Michigan, Ann Arbor, MI 48109 USA. [Murnane, Margaret; Corotis, Ross B.] Univ Colorado, Boulder, CO 80309 USA. [Peddicord, Kenneth] Texas A&M Univ, College Stn, TX 77843 USA. [Peercy, Paul S.] Univ Wisconsin, Madison, WI 53706 USA. [Rollett, Anthony] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Shea, Kenneth] Univ Calif Irvine, Irvine, CA USA. [Lyons, John W.] US Army Res Lab, Los Angeles, CA USA. [Canizares, Claude R.] MIT, Cambridge, MA 02139 USA. [Francisco, Joseph S.] Purdue Univ, W Lafayette, IN 47907 USA. [Gear, C. William] Univ Illinois, Urbana, IL 61801 USA. [Hatch, Henry J.] US Army, Los Angeles, CA USA. [Lanzerotti, Louis J.] New Jersey Inst Technol, Newark, NJ 07102 USA. [Reichmanis, Elsa] Georgia Inst Technol, Atlanta, GA 30332 USA. [Schwartz, Lyle H.] Air Force Off Sci Res, Los Angeles, CA USA. [Streit, Dwight C.] Univ Calif Los Angeles, Los Angeles, CA USA. RP Shank, C (reprint author), Howard Hughes Med Inst, New Haven, CT 06510 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU NATL ACADEMIES PRESS PI WASHINGTON PA 2101 CONSTITUTION AVE, WASHINGTON, DC 20418 USA BN 978-0-309-29090-6 PY 2013 BP 19 EP 25 PG 7 WC Engineering, Multidisciplinary SC Engineering GA BC9BO UT WOS:000356274800004 ER PT J AU Shank, C Patel, CKN Ahearne, JF Back, C Colella, P Dahlburg, J Falcone, R Gupta, Y Haxton, W Hopkins, MD Jeanloz, R Kammerdiener, J Martin, W Murnane, M Nickell, RE Peddicord, K Peercy, PS Rollett, A Rosner, R Selden, R Shea, K Sullivan, F Was, G Yelick, K Shaw, A Rowberg, R McGee, JP Weidman, S Hamilton, L Whitaker, E Lyons, JW Canizares, CR Corotis, RB Francisco, JS Gear, CW Hatch, HJ Lanzerotti, LJ Reichmanis, E Schwartz, LH Shank, CV Streit, DC McGee, J Mozhi, A Butner, C AF Shank, Charles Patel, C. Kumar N. Ahearne, John F. Back, Christina Colella, Phillip Dahlburg, Jill Falcone, Roger Gupta, Yogendra Haxton, Wick Hopkins, Michael D. Jeanloz, Raymond Kammerdiener, John Martin, William Murnane, Margaret Nickell, Robert E. Peddicord, Kenneth Peercy, Paul S. Rollett, Anthony Rosner, Robert Selden, Robert Shea, Kenneth Sullivan, Francis Was, Gary Yelick, Katherine Shaw, Alan Rowberg, Richard McGee, James P. Weidman, Scott Hamilton, Liza Whitaker, Eric Lyons, John W. Canizares, Claude R. Corotis, Ross B. Francisco, Joseph S. Gear, C. William Hatch, Henry J. Lanzerotti, Louis J. Reichmanis, Elsa Schwartz, Lyle H. Shank, Charles V. Streit, Dwight C. McGee, James Mozhi, Arul Butner, Cy CA Dept Energy Lab Assessments Board Div Engn Phys Sci Natl Acad GP Natl Res Council TI The Science Base SO QUALITY OF SCIENCE AND ENGINEERING AT THE NNSA NATIONAL SECURITY LABORATORIES LA English DT Article; Book Chapter C1 [Shank, Charles; Shank, Charles V.] Howard Hughes Med Inst, New Haven, CT 06510 USA. [Patel, C. Kumar N.] Pranalytica Inc, Santa Monica, CA USA. [Ahearne, John F.] Sigma Xi, Res Triangle Pk, NC USA. [Back, Christina] Gen Atom Co, San Diego, CA 92138 USA. [Colella, Phillip; Yelick, Katherine] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Dahlburg, Jill] Naval Res Lab, Washington, DC 20375 USA. [Falcone, Roger; Haxton, Wick; Jeanloz, Raymond] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Gupta, Yogendra] Washington State Univ, Pullman, WA 99164 USA. [Hopkins, Michael D.; Rosner, Robert] Univ Chicago, Chicago, IL 60637 USA. [Martin, William; Was, Gary] Univ Michigan, Ann Arbor, MI 48109 USA. [Murnane, Margaret; Corotis, Ross B.] Univ Colorado, Boulder, CO 80309 USA. [Peddicord, Kenneth] Texas A&M Univ, College Stn, TX 77843 USA. [Peercy, Paul S.] Univ Wisconsin, Madison, WI 53706 USA. [Rollett, Anthony] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Shea, Kenneth] Univ Calif Irvine, Irvine, CA USA. [Lyons, John W.] US Army Res Lab, Los Angeles, CA USA. [Canizares, Claude R.] MIT, Cambridge, MA 02139 USA. [Francisco, Joseph S.] Purdue Univ, W Lafayette, IN 47907 USA. [Gear, C. William] Univ Illinois, Urbana, IL 61801 USA. [Hatch, Henry J.] US Army, Los Angeles, CA USA. [Lanzerotti, Louis J.] New Jersey Inst Technol, Newark, NJ 07102 USA. [Reichmanis, Elsa] Georgia Inst Technol, Atlanta, GA 30332 USA. [Schwartz, Lyle H.] Air Force Off Sci Res, Los Angeles, CA USA. [Streit, Dwight C.] Univ Calif Los Angeles, Los Angeles, CA USA. RP Shank, C (reprint author), Howard Hughes Med Inst, New Haven, CT 06510 USA. NR 5 TC 0 Z9 0 U1 0 U2 1 PU NATL ACADEMIES PRESS PI WASHINGTON PA 2101 CONSTITUTION AVE, WASHINGTON, DC 20418 USA BN 978-0-309-29090-6 PY 2013 BP 26 EP 36 PG 11 WC Engineering, Multidisciplinary SC Engineering GA BC9BO UT WOS:000356274800005 ER PT J AU Shank, C Patel, CKN Ahearne, JF Back, C Colella, P Dahlburg, J Falcone, R Gupta, Y Haxton, W Hopkins, MD Jeanloz, R Kammerdiener, J Martin, W Murnane, M Nickell, RE Peddicord, K Peercy, PS Rollett, A Rosner, R Selden, R Shea, K Sullivan, F Was, G Yelick, K Shaw, A Rowberg, R McGee, JP Weidman, S Hamilton, L Whitaker, E Lyons, JW Canizares, CR Corotis, RB Francisco, JS Gear, CW Hatch, HJ Lanzerotti, LJ Reichmanis, E Schwartz, LH Shank, CV Streit, DC McGee, J Mozhi, A Butner, C AF Shank, Charles Patel, C. Kumar N. Ahearne, John F. Back, Christina Colella, Phillip Dahlburg, Jill Falcone, Roger Gupta, Yogendra Haxton, Wick Hopkins, Michael D. Jeanloz, Raymond Kammerdiener, John Martin, William Murnane, Margaret Nickell, Robert E. Peddicord, Kenneth Peercy, Paul S. Rollett, Anthony Rosner, Robert Selden, Robert Shea, Kenneth Sullivan, Francis Was, Gary Yelick, Katherine Shaw, Alan Rowberg, Richard McGee, James P. Weidman, Scott Hamilton, Liza Whitaker, Eric Lyons, John W. Canizares, Claude R. Corotis, Ross B. Francisco, Joseph S. Gear, C. William Hatch, Henry J. Lanzerotti, Louis J. Reichmanis, Elsa Schwartz, Lyle H. Shank, Charles V. Streit, Dwight C. McGee, James Mozhi, Arul Butner, Cy CA Dept Energy Lab Assessments Board Div Engn Phys Sci Natl Acad GP Natl Res Council TI Modeling and Simulation SO QUALITY OF SCIENCE AND ENGINEERING AT THE NNSA NATIONAL SECURITY LABORATORIES LA English DT Article; Book Chapter C1 [Shank, Charles; Shank, Charles V.] Howard Hughes Med Inst, New Haven, CT 06510 USA. [Patel, C. Kumar N.] Pranalytica Inc, Santa Monica, CA USA. [Ahearne, John F.] Sigma Xi, Res Triangle Pk, NC USA. [Back, Christina] Gen Atom Co, San Diego, CA 92138 USA. [Colella, Phillip; Yelick, Katherine] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Dahlburg, Jill] Naval Res Lab, Washington, DC 20375 USA. [Falcone, Roger; Haxton, Wick; Jeanloz, Raymond] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Gupta, Yogendra] Washington State Univ, Pullman, WA 99164 USA. [Hopkins, Michael D.; Rosner, Robert] Univ Chicago, Chicago, IL 60637 USA. [Martin, William; Was, Gary] Univ Michigan, Ann Arbor, MI 48109 USA. [Murnane, Margaret; Corotis, Ross B.] Univ Colorado, Boulder, CO 80309 USA. [Peddicord, Kenneth] Texas A&M Univ, College Stn, TX 77843 USA. [Peercy, Paul S.] Univ Wisconsin, Madison, WI 53706 USA. [Rollett, Anthony] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Shea, Kenneth] Univ Calif Irvine, Irvine, CA USA. [Lyons, John W.] US Army Res Lab, Los Angeles, CA USA. [Canizares, Claude R.] MIT, Cambridge, MA 02139 USA. [Francisco, Joseph S.] Purdue Univ, W Lafayette, IN 47907 USA. [Gear, C. William] Univ Illinois, Urbana, IL 61801 USA. [Hatch, Henry J.] US Army, Los Angeles, CA USA. [Lanzerotti, Louis J.] New Jersey Inst Technol, Newark, NJ 07102 USA. [Reichmanis, Elsa] Georgia Inst Technol, Atlanta, GA 30332 USA. [Schwartz, Lyle H.] Air Force Off Sci Res, Los Angeles, CA USA. [Streit, Dwight C.] Univ Calif Los Angeles, Los Angeles, CA USA. RP Shank, C (reprint author), Howard Hughes Med Inst, New Haven, CT 06510 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU NATL ACADEMIES PRESS PI WASHINGTON PA 2101 CONSTITUTION AVE, WASHINGTON, DC 20418 USA BN 978-0-309-29090-6 PY 2013 BP 37 EP 44 PG 8 WC Engineering, Multidisciplinary SC Engineering GA BC9BO UT WOS:000356274800006 ER PT J AU Shank, C Patel, CKN Ahearne, JF Back, C Colella, P Dahlburg, J Falcone, R Gupta, Y Haxton, W Hopkins, MD Jeanloz, R Kammerdiener, J Martin, W Murnane, M Nickell, RE Peddicord, K Peercy, PS Rollett, A Rosner, R Selden, R Shea, K Sullivan, F Was, G Yelick, K Shaw, A Rowberg, R McGee, JP Weidman, S Hamilton, L Whitaker, E Lyons, JW Canizares, CR Corotis, RB Francisco, JS Gear, CW Hatch, HJ Lanzerotti, LJ Reichmanis, E Schwartz, LH Shank, CV Streit, DC McGee, J Mozhi, A Butner, C AF Shank, Charles Patel, C. Kumar N. Ahearne, John F. Back, Christina Colella, Phillip Dahlburg, Jill Falcone, Roger Gupta, Yogendra Haxton, Wick Hopkins, Michael D. Jeanloz, Raymond Kammerdiener, John Martin, William Murnane, Margaret Nickell, Robert E. Peddicord, Kenneth Peercy, Paul S. Rollett, Anthony Rosner, Robert Selden, Robert Shea, Kenneth Sullivan, Francis Was, Gary Yelick, Katherine Shaw, Alan Rowberg, Richard McGee, James P. Weidman, Scott Hamilton, Liza Whitaker, Eric Lyons, John W. Canizares, Claude R. Corotis, Ross B. Francisco, Joseph S. Gear, C. William Hatch, Henry J. Lanzerotti, Louis J. Reichmanis, Elsa Schwartz, Lyle H. Shank, Charles V. Streit, Dwight C. McGee, James Mozhi, Arul Butner, Cy CA Dept Energy Lab Assessments Board Div Engn Phys Sci Natl Acad GP Natl Res Council TI Cross-Cutting Themes SO QUALITY OF SCIENCE AND ENGINEERING AT THE NNSA NATIONAL SECURITY LABORATORIES LA English DT Article; Book Chapter C1 [Shank, Charles; Shank, Charles V.] Howard Hughes Med Inst, New Haven, CT 06510 USA. [Patel, C. Kumar N.] Pranalytica Inc, Santa Monica, CA USA. [Ahearne, John F.] Sigma Xi, Res Triangle Pk, NC USA. [Back, Christina] Gen Atom Co, San Diego, CA 92138 USA. [Colella, Phillip; Yelick, Katherine] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Dahlburg, Jill] Naval Res Lab, Washington, DC 20375 USA. [Falcone, Roger; Haxton, Wick; Jeanloz, Raymond] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Gupta, Yogendra] Washington State Univ, Pullman, WA 99164 USA. [Hopkins, Michael D.; Rosner, Robert] Univ Chicago, Chicago, IL 60637 USA. [Martin, William; Was, Gary] Univ Michigan, Ann Arbor, MI 48109 USA. [Murnane, Margaret; Corotis, Ross B.] Univ Colorado, Boulder, CO 80309 USA. [Peddicord, Kenneth] Texas A&M Univ, College Stn, TX 77843 USA. [Peercy, Paul S.] Univ Wisconsin, Madison, WI 53706 USA. [Rollett, Anthony] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Shea, Kenneth] Univ Calif Irvine, Irvine, CA USA. [Lyons, John W.] US Army Res Lab, Los Angeles, CA USA. [Canizares, Claude R.] MIT, Cambridge, MA 02139 USA. [Francisco, Joseph S.] Purdue Univ, W Lafayette, IN 47907 USA. [Gear, C. William] Univ Illinois, Urbana, IL 61801 USA. [Hatch, Henry J.] US Army, Los Angeles, CA USA. [Lanzerotti, Louis J.] New Jersey Inst Technol, Newark, NJ 07102 USA. [Reichmanis, Elsa] Georgia Inst Technol, Atlanta, GA 30332 USA. [Schwartz, Lyle H.] Air Force Off Sci Res, Los Angeles, CA USA. [Streit, Dwight C.] Univ Calif Los Angeles, Los Angeles, CA USA. RP Shank, C (reprint author), Howard Hughes Med Inst, New Haven, CT 06510 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU NATL ACADEMIES PRESS PI WASHINGTON PA 2101 CONSTITUTION AVE, WASHINGTON, DC 20418 USA BN 978-0-309-29090-6 PY 2013 BP 45 EP 48 PG 4 WC Engineering, Multidisciplinary SC Engineering GA BC9BO UT WOS:000356274800007 ER PT S AU Sritharan, SS Xu, M AF Sritharan, Sivaguru S. Xu, Meng BE Dalang, RC Dozzi, M Russo, F TI Malliavin Calculus for Stochastic Point Vortex and Lagrangian Models SO SEMINAR ON STOCHASTIC ANALYSIS, RANDOM FIELDS AND APPLICATIONS VII SE Progress in Probability LA English DT Proceedings Paper CT 7th Seminar on Stochastic Analysis, Random Fields and Applications CY MAY 23-27, 2011 CL Centro Stefano Franscini, Ascona, SWITZERLAND SP Fonds Natl Suisse Rech Sci, Ecole Polytechnique Federale Lausanne HO Centro Stefano Franscini DE Stochastic point vortex model; stochastic Lagrangian model; absolute continuity of law ID NON-LIPSCHITZ COEFFICIENTS; DIFFERENTIAL-EQUATIONS; FLOWS; SDES AB We explore the properties of solutions of two stochastic fluid models for viscous flow in two dimensions. We establish the absolute continuity of the law of the corresponding solution using Malliavin calculus. C1 [Sritharan, Sivaguru S.] Naval Postgrad Sch, Ctr Decis Risk Controls & Signals Intelligence DR, Monterey, CA 93943 USA. [Xu, Meng] Univ Wyoming, Dept Math, Laramie, WY 82071 USA. RP Sritharan, SS (reprint author), Naval Postgrad Sch, Ctr Decis Risk Controls & Signals Intelligence DR, Monterey, CA 93943 USA. EM sssritha@nps.edu; mxu@uwyo.edu FU Army Research Probability and Statistics Program FX This work was completed with the support of the Army Research Probability and Statistics Program. NR 22 TC 0 Z9 0 U1 0 U2 1 PU BIRKHAUSER VERLAG AG PI BASEL PA VIADUKSTRASSE 40-44, PO BOX 133, CH-4010 BASEL, SWITZERLAND SN 1050-6977 BN 978-3-0348-0545-2; 978-3-0348-0544-5 J9 PROG PROBAB PY 2013 VL 67 BP 223 EP 233 PG 11 WC Statistics & Probability SC Mathematics GA BB8MP UT WOS:000346967600011 ER PT S AU Ahn, ES Longman, RW Kim, JJ AF Ahn, Edwin S. Longman, Richard W. Kim, Jae J. BE Tanygin, S Park, RS Starchville, TF Newman, LK TI COMPARISON OF MULTIPLE-PERIOD AND HIGHER ORDER REPETITIVE CONTROL USED TO PRODUCE ROBUSTNESS TO PERIOD FLUCTUATIONS SO SPACEFLIGHT MECHANICS 2013, PTS I-IV SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT 23rd AAS/AIAA Space Flight Mechanics Meeting CY FEB 10-14, 2013 CL Kauai, HI SP Amer Astronaut Soc, Space Flight Mech Tech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm, Anal Graph Inc AB Repetitive control (RC) is a form of control that specifically aims to eliminate the effects of periodic disturbances using knowledge of the disturbance period. It has applications in spacecraft for eliminating disturbances to fine pointing equipment from slight imbalance in reaction wheels or CMG's. In this paper, a spacecraft laser pointing test bed is used for experiments. In some RC applications the period can fluctuate, or the assessment of the period is course due to sampling effects, or the error frequency peak from the disturbance is somewhat wide. In such cases there is a need for control methods that are robust to imprecise knowledge of the disturbance period. This paper evaluates a new method of addressing this problem, by using multiple period repetitive control (MPRC) and making the multiple periods identical. This approach is compared in numeric simulations to the existing method in the literature, higher order repetitive control (HORC) with negative weights. Experimental results will be reported in another publication. In addition, it is shown how to make several other control approaches address the same problem, including matched basis function repetitive control and model predictive control. Advantages and disadvantages of each approach are determined. C1 [Ahn, Edwin S.] Columbia Univ, Mech Engn Dept, New York, NY 10027 USA. [Longman, Richard W.] Columbia Univ, Mech Engn & Civil Engn, New York, NY 10027 USA. [Kim, Jae J.] Naval Postgrad Sch, Mech Aerosp Engn, Monterey, CA 93940 USA. RP Ahn, ES (reprint author), Columbia Univ, Mech Engn Dept, New York, NY 10027 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 978-0-87703-597-8 J9 ADV ASTRONAUT SCI PY 2013 VL 148 BP 179 EP 202 PN I-IV PG 24 WC Engineering, Aerospace SC Engineering GA BE9KW UT WOS:000377723700011 ER PT S AU Sabol, C Segerman, A Hoskins, A Borelli, K Addison, J Duncan, B Roe, K Hill, K Schumacher, PW Coffey, S AF Sabol, Chris Segerman, Alan Hoskins, Aaron Borelli, Kathy Addison, Jason Duncan, Bruce Roe, Kevin Hill, Keric Schumacher, Paul W., Jr. Coffey, Shannon BE Tanygin, S Park, RS Starchville, TF Newman, LK TI AUTOMATED UNCORRELATED TRACK RESOLUTION WITH THE SEARCH AND DETERMINE INTEGRATED ENVIRONMENT (SADIE) SO SPACEFLIGHT MECHANICS 2013, PTS I-IV SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT 23rd AAS/AIAA Space Flight Mechanics Meeting CY FEB 10-14, 2013 CL Kauai, HI SP Amer Astronaut Soc, Space Flight Mech Tech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm, Anal Graph Inc AB A new high performance computing software applications package called the Search and Determine Integrated Environment (SADIE) is being jointly developed and refined by the Air Force and Naval Research Laboratories (AFRL and NRL) to automatically resolve uncorrelated tracks (UCTs) and build a more complete space object catalog for improved Space Situational Awareness (SSA). The motivation for SADIE is to respond to very challenging needs identified by and guidance received from Air Force Space Command (AFSPC) and other senior leaders to develop this technology to support the evolving Joint Space Operations Center (JSpOC) and Alternate Space Control Center (ASC2)-Dahlgren. The SADIE suite includes modification and integration of legacy applications and software components that include Search And Determine (SAD), Satellite Identification (SID), and Parallel Catalog (ParCat), as well as other utilities and scripts to enable end-to-end catalog building and maintenance in a parallel processing environment. SADIE is being developed to handle large catalog building challenges in all orbit regimes and includes the automatic processing of radar, fence, and optical data. Promising real data results are provided for the processing of low Earth radar and Air Force Space Surveillance System fence observations as well as Space Surveillance Telescope optical data. C1 [Sabol, Chris; Schumacher, Paul W., Jr.] Directed Energy Directorate, Air Force Res Lab, Kihei, HI USA. [Segerman, Alan; Hoskins, Aaron; Coffey, Shannon] Naval Res Lab, Washington, DC 20375 USA. [Borelli, Kathy] KJS Consulting, Makawao, HI USA. [Addison, Jason; Hill, Keric] Pacific Def Solut, Kihei, HI USA. [Duncan, Bruce; Roe, Kevin] Boeing Co, Kihei, HI USA. RP Sabol, C (reprint author), Directed Energy Directorate, Air Force Res Lab, Kihei, HI USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 978-0-87703-597-8 J9 ADV ASTRONAUT SCI PY 2013 VL 148 BP 633 EP 647 PN I-IV PG 15 WC Engineering, Aerospace SC Engineering GA BE9KW UT WOS:000377723700038 ER PT S AU Binz, C Healy, L AF Binz, Christopher Healy, Liam BE Tanygin, S Park, RS Starchville, TF Newman, LK TI ASSOCIATION OF SATELLITE OBSERVATIONS USING BAYESIAN INFERENCE SO SPACEFLIGHT MECHANICS 2013, PTS I-IV SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT 23rd AAS/AIAA Space Flight Mechanics Meeting CY FEB 10-14, 2013 CL Kauai, HI SP Amer Astronaut Soc, Space Flight Mech Tech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm, Anal Graph Inc ID MULTIPLE HYPOTHESIS TRACKING; TARGET TRACKING; ALGORITHM; FILTER AB When observing satellites in an increasingly cluttered space environment, ambiguity in measurement association often arises. By using principles of probabilistic, or Bayesian, inference, we can assign numerical values of probability to the different possible associations. Several methods for handling ambiguous satellite observations are discussed, including Probabilistic Data Association (PDA) and Multiple Hypothesis Tracking (MHT). We present a comparison of these methods for a small number of observations and satellites, with a simplified motion and observation models. Filtering performance is characterized for four representative scenarios, including satellite breakups and conjunctions. C1 [Binz, Christopher; Healy, Liam] Naval Res Lab, Math & Orbit Dynam Sect, Code 8233,4555 Overlook Ave SW, Washington, DC 20375 USA. RP Binz, C (reprint author), Naval Res Lab, Math & Orbit Dynam Sect, Code 8233,4555 Overlook Ave SW, Washington, DC 20375 USA. NR 28 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 978-0-87703-597-8 J9 ADV ASTRONAUT SCI PY 2013 VL 148 BP 669 EP 684 PN I-IV PG 16 WC Engineering, Aerospace SC Engineering GA BE9KW UT WOS:000377723700040 ER PT S AU Healy, L Binz, C AF Healy, Liam Binz, Christopher BE Tanygin, S Park, RS Starchville, TF Newman, LK TI MEASUREMENT UNCERTAINTY IN SATELLITE DIRECTION FINDING WITH AN INTERFEROMETER SO SPACEFLIGHT MECHANICS 2013, PTS I-IV SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT 23rd AAS/AIAA Space Flight Mechanics Meeting CY FEB 10-14, 2013 CL Kauai, HI SP Amer Astronaut Soc, Space Flight Mech Tech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm, Anal Graph Inc AB Uncertainties in a direction-finding sensor affect the determined orbit. In a radio-frequency interferometer, modeling only phase difference (timing) uncertainty with a normal distribution, the posterior probability density function of the direction is multimodal. We show that by treating the probability density function of the direction cosine as a discrete set of disconnected regions, or segments, corresponding to each mode, and computing within each mode a conventional mean and standard deviation, we can retain information that would be lost given a conventional treatment which is optimized for a unimodal result. With a corresponding generalization in other parts of the calculation, such as observation association and orbit determination, we may obtain not only improvement of results from a conventional antenna array, but the possibility that a less expensive, simplified array, that can still contribute valuable orbital knowledge, and, due to its lower cost, could enjoy more widespread deployment. We introduce and explain the notion of Multiple Mode Combinatorial Hypothesis Least Squares (MMCHLS), graphing the results obtained from synthesized observations, comparing with the known correct result, as an idea of how that generalization might proceed. C1 [Healy, Liam; Binz, Christopher] Naval Res Lab, Math & Orbit Dynam Sect, Code 8233,4555 Overlook Ave,SW, Washington, DC 20375 USA. RP Healy, L (reprint author), Naval Res Lab, Math & Orbit Dynam Sect, Code 8233,4555 Overlook Ave,SW, Washington, DC 20375 USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 978-0-87703-597-8 J9 ADV ASTRONAUT SCI PY 2013 VL 148 BP 1177 EP 1194 PN I-IV PG 18 WC Engineering, Aerospace SC Engineering GA BE9KW UT WOS:000377723700069 ER PT S AU Anderson, TJ Koehler, AD Tadjer, MJ Hobart, KD Nepal, N Feygelson, TI Pate, BB Eddy, CR Kub, FJ AF Anderson, T. J. Koehler, A. D. Tadjer, M. J. Hobart, K. D. Nepal, N. Feygelson, T. I. Pate, B. B. Eddy, C. R., Jr. Kub, F. J. BE ODwyer, C Douglas, E Jang, S Carter, MT Chueh, YL Jo, MH Suzuki, M He, JH Albin, S Chou, LJ Jin, S MartinPalma, RJ TI Improved Passivation Techniques for AlGaN/GaN HEMTs SO STATE-OF-THE-ART PROGRAM ON COMPOUND SEMICONDUCTORS (SOTAPOCS) 55 -AND- LOW-DIMENSIONAL NANOSCALE ELECTRONIC AND PHOTONIC DEVICES 6 SE ECS Transactions LA English DT Proceedings Paper CT Symposia on State-of-the-Art Program on Compound Semiconductors (SOTAPOCS) 55 and Low-Dimensional Nanoscale Electronics and Photonic Devices 6 held during the 224th Meeting of the Electrochemical-Society CY OCT 27-NOV 01, 2013 CL San Francisco, CA SP Electrochem Soc, Electrochem Soc, Elect & Photon Div, Electrochem Soc, Dielectr Sci & Technol Div, Electrochem Soc, Sensor Div ID IN-SITU AB AlGaN/GaN power high electron mobility transistor (HEMT) performance is limited by current collapse and off-state gate and drain leakage current. A series of studies to improve these properties through optimized surface cleaning, as well as the implementation of novel materials, such as AlN and nanocrystalline diamond, is presented. Reduced leakage currents, degradation of dynamic ON-resistance, and current collapse ratio quantify improvement in HEMT performance. DC I-V measurements, pulsed I-V measurements, and a boost converter test circuit is used to validate these properties. C1 [Anderson, T. J.; Koehler, A. D.; Tadjer, M. J.; Hobart, K. D.; Nepal, N.; Feygelson, T. I.; Pate, B. B.; Eddy, C. R., Jr.; Kub, F. J.] Naval Res Lab, Washington, DC 20375 USA. RP Anderson, TJ (reprint author), Naval Res Lab, Washington, DC 20375 USA. RI Pate, Bradford/B-4752-2010; Chueh, Yu-Lun/E-2053-2013 OI Pate, Bradford/0000-0002-3288-2947; Chueh, Yu-Lun/0000-0002-0155-9987 NR 6 TC 0 Z9 0 U1 1 U2 7 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-453-4; 978-1-62332-099-7 J9 ECS TRANSACTIONS PY 2013 VL 58 IS 8 BP 41 EP 46 DI 10.1149/05808.0041ecst PG 6 WC Electrochemistry; Nanoscience & Nanotechnology; Optics SC Electrochemistry; Science & Technology - Other Topics; Optics GA BC6TC UT WOS:000354472700005 ER PT S AU Smith, DG Segal, MW AF Smith, David G. Segal, Mady Wechsler BE Claster, PN Blair, SL TI ON THE FAST TRACK: DUAL MILITARY COUPLES NAVIGATING INSTITUTIONAL STRUCTURES SO VISIONS OF THE 21ST CENTURY FAMILY: TRANSFORMING STRUCTURES AND IDENTITIES SE Contemporary Perspectives in Family Research LA English DT Article; Book Chapter DE Dual career; military women; military families; life course; work and family ID WORK-FAMILY CONFLICT; LIFE-COURSE; CAREER SATISFACTION; HISTORY CALENDAR; EARNER COUPLES; GENDER; BALANCE; WOMEN; FIT; DECISIONS AB Institutional structures of professional career paths often support bread-winner-homemaker families, with a stay at home wife available full time to support the professional (and children), so the professional can devote complete energy and time to developing a career. This research examines how two partners in the same narrowly structured, fast track occupational culture such as those occurring for dual military officer couples shape how women and men negotiate decision making and life events. Data from interviews with 23 dual U.S. Navy officer couples build upon Becker and Moen's (1999) scaling back notions. With both spouses in these careers, placing limits on work is extremely difficult due to fast track cultures that demand higher status choices and structures that formally do not reliably consider collocations. Trading off occurs, but with distress due to the unique demands on two partners in the fast track culture, which means career death for some. Two partners in fast track careers may not yet have given up on two careers as many peers may have, but they lose a great deal, including time together and their desired number of children. But they ultimately posit individual choice rather than focusing on structural change. The pressured family life resulting is likely similar to that for partners in other narrowly structured, fast track cultures such as in law firms and academia. C1 [Smith, David G.] US Naval Acad, Leadership Eth & Law Dept, Annapolis, MD 21402 USA. [Segal, Mady Wechsler] Univ Maryland, Sociol, College Pk, MD 20742 USA. [Segal, Mady Wechsler] Univ Maryland, Womens Studies Dept, College Pk, MD 20742 USA. RP Smith, DG (reprint author), US Naval Acad, Leadership Eth & Law Dept, Annapolis, MD 21402 USA. NR 70 TC 1 Z9 1 U1 0 U2 1 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY, W YORKSHIRE BD16 1WA, ENGLAND SN 1530-3535 BN 978-1-78350-029-1; 978-1-78350-028-4 J9 CONT PERSP FAM RES PY 2013 VL 7 BP 213 EP 253 DI 10.1108/S1530-3535(2013)0000007011 D2 10.1108/S1530-3535(2013)7 PG 41 WC Family Studies; Sociology SC Family Studies; Sociology GA BD1YM UT WOS:000358503500009 ER PT J AU Beerer, MJ Yoon, H Agrawal, BN AF Beerer, Michael J. Yoon, Hyungjoo Agrawal, Brij N. TI Practical adaptive filter controls for precision beam pointing and tracking with jitter attenuation SO CONTROL ENGINEERING PRACTICE LA English DT Article DE Adaptive filter; Laser beam pointing; Jitter control; Target tracking; Least mean squares (LMS) filter; Recursive least squares (RLS) filter AB The imaging, pointing, and tracking performance of precision optical systems are degraded by various disturbances which induce optical beam jitter. The present research proposes adaptive filter control methods for actively attenuating beam jitter using a fast steering mirror. Control loops with various structures of adaptive transversal filters are developed to suppress time-varying or uncertain jitter, and their characteristics and performances are compared. In particular, for situations when obtaining reference signals which are fully coherent with the disturbance is not possible, methods for incorporating multiple semi-coherent reference signals into the control law are developed. An index variable is defined to measure quality of various references signals, and a few signals are selected based on this index. The developed controllers are verified on a jitter control testbed, and experimental results show that the adaptive methods show superior performance in jitter attenuation over the conventional non-adaptive method. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Yoon, Hyungjoo] Korea Aerosp Res Inst, Taejon 305806, South Korea. [Beerer, Michael J.; Yoon, Hyungjoo; Agrawal, Brij N.] USN, Postgrad Sch, Monterey, CA 93943 USA. RP Yoon, H (reprint author), Korea Aerosp Res Inst, 169-84 Gwahangno, Taejon 305806, South Korea. EM mbeerer@gmail.com; drake.yoon@gmail.com; agrawal@nps.edu NR 15 TC 2 Z9 3 U1 1 U2 17 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0967-0661 J9 CONTROL ENG PRACT JI Control Eng. Practice PD JAN PY 2013 VL 21 IS 1 BP 122 EP 133 DI 10.1016/j.conengprac.2012.09.018 PG 12 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA 046KP UT WOS:000311764200013 ER PT J AU Weiland, C Vlachos, PP AF Weiland, Chris Vlachos, Pavlos P. TI Round gas jets submerged in water SO INTERNATIONAL JOURNAL OF MULTIPHASE FLOW LA English DT Article DE Submerged gas jet; Interfacial stability; Buoyant jet ID LIQUID INTERFACE; HYDRODYNAMICS; INSTABILITY; TRANSITION; INJECTION; DYNAMICS; BUBBLES; BREAKUP; PROBE; METAL AB Water submerged gas jets are characterized by the interplay of inertia and buoyancy forces and can exhibit diverse behaviors ranging from bubbly plumes to stable jets. In this work, direct measurements of the interfacial behavior of water-submerged gas jets, with Mach numbers ranging from subsonic to supersonic, were performed using high-speed digital photography and shadowgraphs. The results indicate that the jets have a preferential pinch-off position that can be attributed and correspond to the location of the maximum streamwise-velocity turbulence fluctuations. A new, experimentally determined jet penetration distance is proposed; the jetting length is taken as the jet length corresponding to a 99% probability of the gas-jet outer boundary being attached to the orifice during the sampling period. Using the shadowgraph analysis and this criterion, we determined that the electro-resistivity probe measurements, previously used to determine the jet penetration length, may be significantly biased. This is attributed to the inability of the probe measurements to distinguish between a continuous gas jet and advecting bubbles. In addition, based on a simple force-balance of the jet cross-section, we introduce a new scaling relationship for the jet penetration distance. This relationship shows that the jetting length scales with the square of the Froude number and compares well with the experimental observations. Finally, measurements of the gas jet boundary acceleration coupled with estimations of the internal gas jet velocity suggest that both Rayleigh-Taylor and Kelvin-Helmholtz mechanisms are nearly equally responsible for governing the jet boundary dynamics. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Vlachos, Pavlos P.] Virginia Tech, Dept Mech Engn, Blacksburg, VA 24061 USA. [Weiland, Chris] USN, Ctr Surface Warfare, Dahlgren Div, Dahlgren, VA 22448 USA. RP Vlachos, PP (reprint author), Virginia Tech, Dept Mech Engn, 114S Randolph Hall, Blacksburg, VA 24061 USA. EM christopher.weiland1@navy.mil; pvlachos@vt.edu RI Vlachos, Pavlos P/G-3779-2010 OI Vlachos, Pavlos P/0000-0002-8040-9257 FU Naval Surface Warfare Center, Dahlgren Division FX This research was sponsored by the Naval Surface Warfare Center, Dahlgren Division. Mr. John Busic and Dr. Jon Yagla served as the technical monitors. Their support is gratefully acknowledged. NR 28 TC 9 Z9 14 U1 2 U2 30 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0301-9322 J9 INT J MULTIPHAS FLOW JI Int. J. Multiph. Flow PD JAN PY 2013 VL 48 BP 46 EP 57 DI 10.1016/j.ijmultiphaseflow.2012.08.002 PG 12 WC Mechanics SC Mechanics GA 048NT UT WOS:000311919900004 ER PT J AU Wei, DM Jordan, PM AF Wei, Dongming Jordan, P. M. TI A note on acoustic propagation in power-law fluids: Compact kinks, mild discontinuities, and a connection to finite-scale theory SO INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS LA English DT Article DE Non-linear acoustics; Power-law fluids; Traveling wave solutions; Finite-scale Navier-Stokes equations ID THERMOVISCOUS FLUIDS; TRAVELING-WAVES; EQUATIONS; MODEL AB Acoustic traveling waves in a class of power-law viscosity fluids are investigated. Both bi-directional and unidirectional versions of the one-dimensional (1D), weakly non-linear equation of motion are derived; traveling wave solutions (TWSs), special cases of which take the form of compact and algebraic kinks, are determined; and the impact of the bulk viscosity on the structure/nature of the kinks is examined. Most significantly, we point out a connection that exists between the power-law model considered here and the recently introduced theory of finite-scale equations. Published by Elsevier Ltd. C1 [Jordan, P. M.] USN, Acoust Div, Res Lab, Stennis Space Ctr, MS 39529 USA. [Wei, Dongming] Univ New Orleans, Dept Math, New Orleans, LA 70148 USA. RP Jordan, PM (reprint author), USN, Acoust Div, Res Lab, Stennis Space Ctr, MS 39529 USA. EM pjordan@nrlssc.navy.mil FU ONR FX P.M.J. is pleased to acknowledge a series helpful discussions with Dr. Len G. Margolin. P.M.J. was supported by ONR funding. NR 23 TC 5 Z9 5 U1 1 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0020-7462 J9 INT J NONLIN MECH JI Int. J. Non-Linear Mech. PD JAN PY 2013 VL 48 BP 72 EP 77 DI 10.1016/j.ijnonlinmec.2012.07.006 PG 6 WC Mechanics SC Mechanics GA 042HS UT WOS:000311462900008 ER PT J AU Kilic, E Stanica, P AF Kilic, Emrah Stanica, Pantelimon TI The inverse of banded matrices SO JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS LA English DT Article DE Triangular matrix; Hessenberg matrix; Inverse; r-banded matrix ID GENERAL TRIDIAGONAL MATRICES AB The inverses of r-banded matrices, for r = 1, 2, 3 have been thoroughly investigated as one can see from the references we provide. Let B-r,B- n(1 <= r <= n) be an n x n matrix of entries {a(j)(i)}, -r <= I <= r, 1 <= j <= r, with the remaining un-indexed entries all zeros. In this paper, generalizing a method of Mallik (1999) [5], we give the LU factorization and the inverse of the matrix B-r,B- n (if it exists). Our results are valid for an arbitrary square matrix (taking r = n), and so, we will give a new approach for computing the inverse of an invertible square matrix. Our method is based on Hessenberg submatrices associated to B-r,B-n. (c) 2012 Elsevier B.V. All rights reserved. C1 [Kilic, Emrah] TOBB Econ & Technol Univ, Dept Math, TR-06560 Ankara, Turkey. [Stanica, Pantelimon] USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Kilic, E (reprint author), TOBB Econ & Technol Univ, Dept Math, TR-06560 Ankara, Turkey. EM ekilic@etu.edu.tr; pstanica@nps.edu FU Air Force-CVAQ; NPS-RIP FX The second author was partially supported by Air Force-CVAQ(D. Nussbaum) and NPS-RIP. NR 14 TC 5 Z9 5 U1 1 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0427 J9 J COMPUT APPL MATH JI J. Comput. Appl. Math. PD JAN 1 PY 2013 VL 237 IS 1 BP 126 EP 135 DI 10.1016/j.cam.2012.07.018 PG 10 WC Mathematics, Applied SC Mathematics GA 020WK UT WOS:000309847100010 ER PT J AU Liu, JL Zabetakis, D Goldman, ER Anderson, GP AF Liu, Jinny L. Zabetakis, Daniel Goldman, Ellen R. Anderson, George P. TI Selection and evaluation of single domain antibodies toward MS2 phage and coat protein SO MOLECULAR IMMUNOLOGY LA English DT Article DE Anti-MS2 empty set; Single domain antibody; Immune library; Biopanning; Coat protein ID TRANSLATIONAL REPRESSION; NUCLEOTIDE SEQUENCE; VIRUS; RNA; FRAGMENTS; BINDING; EXPRESSION; LIBRARY; DISPLAY; GENE AB MS2 phage (MS2 empty set) is a coli phage, non-pathogenic to eukaryotic cells, which has been used as a simulant for viral biothreats, such as those causing smallpox and hemorrhagic fever. MS2 empty set consists of an icosahedral capsid, 28 nm in diameter, and a single stranded RNA genome; the viral capsid is composed of 180 copies of coat protein (CP). In this study, we isolated anti-MS2 empty set single domain antibodies (sdAbs) for the sensitive detection of the MS2 empty set. To achieve this, a first immune sdAb library was prepared from llamas immunized with purified coat protein and a second from animals immunized with MS2 empty set. By panning the two libraries against CP, MS2 empty set, or alternating between the two targets, anti-MS2 empty set and anti-CP sdAbs were selected, sequenced, and characterized for their binding affinity. Both direct binding assays and capture sandwich assays were performed on the MAGPIX platform. One of the best anti-MS2 empty set sdAb, Lib2CP12H, could detect MS2 empty set concentrations as low as 1.45 ng/mL (similar to 5.0E+6 pfu/mL), providing equivalent detection to conventional antibodies. This sdAb is thermally stable with a melting temperature around 60 degrees C and recovered 80% of its secondary structure after heat denaturation. Published by Elsevier Ltd. C1 [Liu, Jinny L.; Zabetakis, Daniel; Goldman, Ellen R.; Anderson, George P.] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. RP Liu, JL (reprint author), USN, Res Lab, Ctr Bio Mol Sci & Engn, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM jinny.liu@nrl.navy.mil; george.anderson@nrl.navy.mil RI Anderson, George/D-2461-2011 OI Anderson, George/0000-0001-7545-9893 FU Defense Advance Research Project Agency (DARPA) FX We thank Drs. James Carney, Jill Czarnecki, and Thomas O'Brien for their generous gift of materials used to complete this work. Also thanks to Drs. Dasha Leary and Stella North for their comments on the manuscript. This work was supported by Defense Advance Research Project Agency (DARPA). The opinions expressed here are those of authors and do not represent those of the US Navy, the US Department of Defense, or the US government. NR 24 TC 10 Z9 11 U1 0 U2 23 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0161-5890 J9 MOL IMMUNOL JI Mol. Immunol. PD JAN-FEB PY 2013 VL 53 IS 1-2 BP 118 EP 125 DI 10.1016/j.molimm.2012.07.010 PG 8 WC Biochemistry & Molecular Biology; Immunology SC Biochemistry & Molecular Biology; Immunology GA 017VF UT WOS:000309618400013 PM 22898187 ER PT J AU Hanna-Wakim, R Chehab, H Mahfouz, I Nassar, F Baroud, M Shehab, M Pimentel, G Wasfy, M House, B Araj, G Matar, G Dbaibo, G AF Hanna-Wakim, Rima Chehab, Hiba Mahfouz, Imane Nassar, Farah Baroud, Maysa Shehab, Marwa Pimentel, Guillermo Wasfy, Momtaz House, Brent Araj, George Matar, Ghassan Dbaibo, Ghassan CA Lebanese Inter-Hosp Pneumococcal TI Epidemiologic characteristics, serotypes, and antimicrobial susceptibilities of invasive Streptococcus pneumoniae isolates in a nationwide surveillance study in Lebanon SO VACCINE LA English DT Review DE S. pneumoniae; Serotype; Resistance; Lebanon; Pediatric; Middle East ID PNEUMOCOCCAL CONJUGATE VACCINE; ANTIBIOTIC-RESISTANCE; SAUDI-ARABIA; DISEASE; INFECTIONS; PREVENTION; PENICILLIN; CHILDREN; CHILDHOOD; PATTERNS AB Invasive pneumococcal disease (IPD) associated with Streptococcus pneumonia is a major public health problem worldwide for all age groups, including in Lebanon. Prevention through vaccination remains the most valuable tool to decrease the burden of disease. Pneumococcal conjugate vaccine 7 (PCV7), marketed internationally including in the Middle East and North Africa region for the prevention of IPD, was introduced in Lebanon in 2006, followed by PCV10 and PCV13 in 2010. However, none of these is currently part of the Extended Program of Immunization schedule and published data on IPD incidence, pneumococcal serotypes and vaccine coverage in the region are lacking. The Lebanese Inter-Hospital Pneumococcal Surveillance Program is a surveillance system set up to determine the burden of IPD and the prevalent serotypes responsible. The aim of this prospective 6-year study carried out in 78 hospitals throughout Lebanon was to obtain such data to help health authorities make informed decisions on the implementation of pneumococcal vaccination at the national level. A total of 257 isolates of culture-confirmed Streptococcus pneumoniae were evaluated. Considering all age groups, vaccine coverage was 41.4%, 53.9%, and 67.2% for PCV7, PCV10, and PCV13 serotypes, respectively; for patients <2, 2-5, and >60 years of age, PCV7 coverage was 50%, 51%, and 35%, respectively; PCV10 coverage was 53%, 74%, 45%, respectively; and PCV13 coverage was 63%, 80%, and 68%, respectively. Overall, 17.4% of these isolates were penicillin-G non-susceptible using the latest established breakpoints and mortality occurred in 23.5% of the patients with non-susceptible isolates. In addition, 10.9% of isolates were multi-drug-resistant. The highest mortality rates were observed in the eldest (>60 years of age) and youngest (<2 years of age) patients. The most prevalent invasive serotypes identified were those found in currently available pneumococcal conjugate vaccines, emphasizing the importance of implementing the vaccine in the routine immunization schedule at the national level. Continuation of current surveillance practices will help assess the impact of vaccine implementation on IPD epidemiology, serotype distribution and antibiotic resistance patterns. (C) 2012 Elsevier Ltd. All rights reserved. C1 [Dbaibo, Ghassan] Amer Univ Beirut, Med Ctr, Dept Pediat & Adolescent Med, Beirut, Lebanon. [Hanna-Wakim, Rima; Chehab, Hiba; Mahfouz, Imane; Baroud, Maysa; Shehab, Marwa; Araj, George; Matar, Ghassan; Dbaibo, Ghassan] Amer Univ Beirut, Ctr Infect Dis Res, Beirut, Lebanon. [Nassar, Farah; Matar, Ghassan] Amer Univ Beirut, Dept Expt Pathol Immunol & Microbiol, Beirut, Lebanon. [Pimentel, Guillermo; Wasfy, Momtaz; House, Brent] USN, Med Res Unit 3, Cairo, Egypt. [Araj, George] Amer Univ Beirut, Dept Pathol & Lab Med, Beirut, Lebanon. RP Dbaibo, G (reprint author), Amer Univ Beirut, Med Ctr, Dept Pediat & Adolescent Med, Cairo St,Room C-649,POB 11-0236, Beirut, Lebanon. EM gdbaibo@aub.edu.lb RI Valle, Ruben/A-7512-2013; OI Pimentel, Guillermo/0000-0003-2464-1526 FU PneumoADIP; MSD; Pfizer; GSK FX Start up funding for LIPSP was provided by PneumoADIP. Additional funding was provided by MSD and Pfizer.; G. Dbaibo is on Advisory Boards for GSK and Pfizer, has received honoraria for lectures from GSK, MSD, Pfizer, and Hikma, and has received research funding through his university from GSK, Pfizer, and MSD. All of the other authors have none to declare. NR 40 TC 3 Z9 3 U1 0 U2 13 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0264-410X J9 VACCINE JI Vaccine PD DEC 31 PY 2012 VL 30 SU 6 BP G11 EP G17 DI 10.1016/j.vaccine.2012.07.020 PG 7 WC Immunology; Medicine, Research & Experimental SC Immunology; Research & Experimental Medicine GA 068RV UT WOS:000313384800004 PM 23228352 ER PT J AU Volino, RJ Ibrahim, MB AF Volino, Ralph J. Ibrahim, Mounir B. TI Separation control on high lift low-pressure turbine airfoils using pulsed vortex generator jets SO APPLIED THERMAL ENGINEERING LA English DT Article; Proceedings Paper CT ASME/ATI/UIT Conference on Thermal and Environmental Issues in Energy Systems CY MAY 16-19, 2010 CL Sorrento, ITALY SP Amer Soc Mech Engineers (ASME), Italian Thermotechn Assoc (ATI), Italian Union Thermal-Fluid Dynam (UIT) DE Low pressure turbine; Separation control; Vortex generator jets ID FLOW TRANSITION; REGION; BLADE AB Boundary layer separation control has been studied using vortex generator jets (VGJs) on a very high lift, low-pressure turbine airfoil. Experiments were done under low (0.6%) freestream turbulence conditions on a linear cascade in a low speed wind tunnel. Pressure surveys on the airfoil surface and downstream total pressure loss surveys were documented. Instantaneous velocity profile measurements were acquired in the suction surface boundary layer. Cases were considered at Reynolds numbers (based on the suction surface length and the nominal exit velocity from the cascade) of 25000 and 50000. Jet pulsing frequency and duty cycle were varied. In cases without flow control, the boundary layer separated and did not reattach. With the VGJs, separation control was achieved. At sufficiently high pulsing frequencies, separation control was possible with low jet velocities and 10% duty cycle. At lower frequencies, a 50% duty cycle helped by separating the disturbances associated with the jets turning on and turning off, thereby doubling the frequency of separation control events above the pulsing frequency. Phase averaged velocity profiles and wavelet spectra of the velocity show the VGJ disturbance causes the boundary layer to reattach, but that it can re-separate between disturbances. When the disturbances occur at high enough frequency, the time available for separation is reduced, and the separation bubble remains closed at all times. Published by Elsevier Ltd. C1 [Volino, Ralph J.] USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA. [Ibrahim, Mounir B.] Cleveland State Univ, Dept Mech Engn, Cleveland, OH 44115 USA. RP Volino, RJ (reprint author), USN Acad, Dept Mech Engn, 590 Holloway Rd, Annapolis, MD 21402 USA. EM volino@usna.edu; m.ibrahim@csuohio.edu NR 23 TC 7 Z9 7 U1 1 U2 34 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-4311 J9 APPL THERM ENG JI Appl. Therm. Eng. PD DEC 31 PY 2012 VL 49 SI SI BP 31 EP 40 DI 10.1016/j.applthermaleng.2011.08.028 PG 10 WC Thermodynamics; Energy & Fuels; Engineering, Mechanical; Mechanics SC Thermodynamics; Energy & Fuels; Engineering; Mechanics GA 014JS UT WOS:000309372500006 ER PT J AU Achee, N Masuoka, P Smith, P Martin, N Chareonviryiphap, T Polsomboon, S Hendarto, J Grieco, J AF Achee, Nicole Masuoka, Penny Smith, Philip Martin, Nicholas Chareonviryiphap, Theeraphap Polsomboon, Suppaluck Hendarto, Joko Grieco, John TI Identifying the effective concentration for spatial repellency of the dengue vector Aedes aegypti SO PARASITES & VECTORS LA English DT Article DE Spatial repellency; Air sampling; Aedes aegypti; Mosquito behavior; Experimental hut; Chemical concentration; DDT; Metofluthrin ID DIPTERA-CULICIDAE; MOVEMENT PATTERNS; THAILAND; CLASSIFICATION AB Background: Current efforts are underway to quantify the chemical concentration in a treated air space that elicits a spatial repellent (deterrent) response in a vector population. Such information will facilitate identifying the optimum active ingredient (AI) dosage and intervention coverage important for the development of spatial repellent tools -one of several novel strategies being evaluated for vector-borne disease control. This study reports initial findings from air sampling experiments conducted under field conditions to describe the relationship between air concentrations of repellent AIs and deterrent behavior in the dengue vector, Aedes aegypti. Methods: Air samples were taken inside and outdoors of experimental huts located in Pu Tuey Village, Kanchanaburi Province, Thailand in conjunction with mosquito behavioral evaluations. A mark-release-recapture study design using interception traps was used to measure deterrency of Ae. aegypti against 0.00625% metofluthrin coils and DDT-treated fabric (2g/m2) within separate experimental trials. Sentinel mosquito cohorts were positioned adjacent to air sampling locations to monitor knock down responses to AI within the treated air space. Air samples were analyzed using two techniques: the U. S. Environmental Protection Agency (USEPA) Compendium Method TO-10A and thermal desorption (TD). Results: Both the USEPA TO-10A and TD air sampling methods were able to detect and quantify volatized AIs under field conditions. Air samples indicated concentrations of both repellent chemicals below thresholds required for toxic responses (mortality) in mosquitoes. These concentrations elicited up to a 58% and 70% reduction in Ae. aegypti entry (i. e., deterrency) into treated experimental huts using metofluthrin coils and DDT-treated fabric, respectively. Minimal knock down was observed in sentinel mosquito cohorts positioned adjacent to air sampling locations during both chemical evaluations. Conclusions: This study is the first to describe two air sampling methodologies that are appropriate for detecting and quantifying repellent chemicals within a treated air space during mosquito behavior evaluations. Results demonstrate that the quantity of AI detected by the mosquito vector, Ae. aegypti, that elicits repellency is far lower than that needed for toxicity. These findings have important implications for evaluation and optimization of new vector control tools that function through mosquito behavior modification as opposed to mortality. C1 [Achee, Nicole; Masuoka, Penny; Polsomboon, Suppaluck; Grieco, John] Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, Bethesda, MD 20814 USA. [Smith, Philip] Hlth Response Team, Dept Labor Occupat Hlth & Safety Adm, Sandy, UT USA. [Martin, Nicholas] USN, Infect Dis Directorate, Med Res Ctr, Silver Spring, MD USA. [Chareonviryiphap, Theeraphap] Katsetsart Univ, Dept Entomol, Fac Agr, Bangkok 10900, Thailand. [Hendarto, Joko] Hasanuddin Univ, Dept Publ Hlth & Prevent Med, Fac Med, Makassar 90245, Indonesia. RP Achee, N (reprint author), Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, 4301 Jones Bridge Rd, Bethesda, MD 20814 USA. EM nicole.achee@usuhs.edu FU Bill & Melinda Gates Foundation [48513]; S.C. Johnson Son, Inc. FX We thank the Armed Forces Development Command, Sai Yok District, Kanchanaburi Province, Thailand for support of the research program by providing land for the establishment of an experimental hut site. We also thank Dr. Maude Christian Meier, Senior Research Scientist, Insect Control RD&E, of S. C. Johnson & Son, Inc. Racine WI for her contribution of metofluthrin coils, sampling pumps and PUF sorbent tubes and Kenneth Welch, also of S. C. Johnson & Son, Inc. for his invaluable input in designing the research study and coordinating ALS Laboratory contracts. Funding for this research was provided by the Bill & Melinda Gates Foundation (Grant #48513) and S.C. Johnson & Son, Inc. NR 14 TC 18 Z9 18 U1 1 U2 23 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1756-3305 J9 PARASITE VECTOR JI Parasites Vectors PD DEC 28 PY 2012 VL 5 AR 300 DI 10.1186/1756-3305-5-300 PG 9 WC Parasitology SC Parasitology GA 075TA UT WOS:000313908200001 PM 23273133 ER PT J AU Sivarajah, I Goodman, DS Wells, JE Narducci, FA Smith, WW AF Sivarajah, I. Goodman, D. S. Wells, J. E. Narducci, F. A. Smith, W. W. TI Evidence of sympathetic cooling of Na+ ions by a Na magneto-optical trap in a hybrid trap SO PHYSICAL REVIEW A LA English DT Article ID LINEAR PAUL TRAP; EXCHANGE-COLLISION TECHNIQUE; BOSE-EINSTEIN CONDENSATE; SODIUM ATOMS; ASSOCIATIVE IONIZATION; STORED IONS; SPECTROSCOPY; DENSITY; PHYSICS; STATES AB A hybrid ion-neutral trap provides an ideal system to study collisional dynamics between ions and neutral atoms. This system provides a general cooling method that can be applied to species that do not have optically accessible transitions and can also potentially cool internal degrees of freedom. The long-range polarization potentials (V proportional to - alpha/r(4)) between ions and neutrals result in large scattering cross sections at cold temperatures, making the hybrid trap a favorable system for efficient sympathetic cooling of ions by collisions with neutral atoms. We present experimental evidence of sympathetic cooling of trapped Na+ ions, which are closed shell and therefore do not have a laser-induced atomic transition from the ground state, by equal-mass cold Na atoms in a magneto-optical trap. DOI: 10.1103/PhysRevA.86.063419 C1 [Sivarajah, I.; Goodman, D. S.; Wells, J. E.; Smith, W. W.] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA. [Narducci, F. A.] USN, Air Syst Command, EO Sensors Div, Patuxent River, MD 20670 USA. RP Sivarajah, I (reprint author), Univ Connecticut, Dept Phys, Storrs, CT 06269 USA. FU NSF [PHY0855570] FX We would like to acknowledge support from the NSF under Grant No. PHY0855570. One of us (F.A.N.) would like to thank the University of Connecticut group for their hospitality during numerous visits. We also thank Jian Lin and Oleg Makarov for their preliminary work on the ring-dye laser and the Na MOT. NR 57 TC 20 Z9 20 U1 1 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD DEC 26 PY 2012 VL 86 IS 6 AR 063419 DI 10.1103/PhysRevA.86.063419 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 061EF UT WOS:000312829800022 ER PT J AU Jolliff, JK Smith, TA Barron, CN deRada, S Anderson, SC Gould, RW Arnone, RA AF Jolliff, Jason K. Smith, Travis A. Barron, Charlie N. deRada, Sergio Anderson, Stephanie C. Gould, Richard W. Arnone, Robert A. TI The impact of coastal phytoplankton blooms on ocean-atmosphere thermal energy exchange: Evidence from a two-way coupled numerical modeling system SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID CIRCULATION MODEL; SOLAR-RADIATION; MONTEREY BAY; WATERS; CALIFORNIA; PRODUCTIVITY; BIOMASS; NCOM; SEA AB A set of sensitivity experiments are performed with a two-way coupled and nested ocean-atmosphere forecasting system in order to deconvolve how dense phytoplankton stocks in a coastal embayment may impact thermal energy exchange processes. Monterey Bay simulations parameterizing solar shortwave transparency in the surface ocean as an invariant oligotrophic oceanic water type estimate consistently colder sea surface temperature (SST) than simulations utilizing more realistic, spatially varying shortwave attenuation terms based on satellite estimates of surface algal pigment concentration. These SST differences lead to an similar to 88% increase in the cumulative turbulent thermal energy transfer from the ocean to the atmosphere over the three month simulation period. The result is a warmer simulated atmospheric boundary layer with respective local air temperature differences approaching similar to 2 degrees C. This study suggests that the retention of shortwave solar flux by ocean flora may directly impact even short-term forecasts of coastal meteorological variables. Citation: Jolliff, J. K., T. A. Smith, C. N. Barron, S. deRada, S. C. Anderson, R. W. Gould, and R. A. Arnone (2012), The impact of coastal phytoplankton blooms on ocean-atmosphere thermal energy exchange: Evidence from a two-way coupled numerical modeling system, Geophys. Res. Lett., 39, L24607, doi:10.1029/2012GL053634. C1 [Jolliff, Jason K.; Smith, Travis A.; Barron, Charlie N.; deRada, Sergio; Anderson, Stephanie C.; Gould, Richard W.] USN, Div Oceanog, Res Lab, Stennis Space Ctr, MS 39529 USA. [Arnone, Robert A.] Univ So Mississippi, Dept Marine Sci, Stennis Space Ctr, MS USA. RP Jolliff, JK (reprint author), USN, Div Oceanog, Res Lab, Code 7331, Stennis Space Ctr, MS 39529 USA. EM jason.jolliff@nrlssc.navy.mil RI sebastianovitsch, stepan/G-8507-2013; Barron, Charlie/C-1451-2008 FU NASA ROSES A.28 Applied Science Program [NNX09AR68G]; NRL 6.2 project "Resolving Bio-Optical Feedback to Ocean/Atmosphere Dynamics," Program [62435N] FX This work was supported by the NRL 6.2 project "Resolving Bio-Optical Feedback to Ocean/Atmosphere Dynamics," Program element 62435N and the NASA ROSES A.28 Applied Science Program contract NNX09AR68G. We thank Bronwyn Cahill for reviewer comments that improved the paper. NR 24 TC 6 Z9 6 U1 1 U2 21 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD DEC 25 PY 2012 VL 39 AR L24607 DI 10.1029/2012GL053634 PG 7 WC Geosciences, Multidisciplinary SC Geology GA 062ST UT WOS:000312943300001 ER PT J AU Guenthner, AJ Davis, MC Ford, MD Reams, JT Groshens, TJ Baldwin, LC Lubin, LM Mabry, JM AF Guenthner, Andrew J. Davis, Matthew C. Ford, Michael D. Reams, Josiah T. Groshens, Thomas J. Baldwin, Lawrence C. Lubin, Lisa M. Mabry, Joseph M. TI Polycyanurate Networks with Enhanced Segmental Flexibility and Outstanding Thermochemical Stability SO MACROMOLECULES LA English DT Article ID DICYANATE ESTER MONOMER; CYANATE ESTER; CURE KINETICS; PHYSICAL-PROPERTIES; TRICYANATE ESTER; THERMOSET CURE; RESINS; LIQUID; 1,3,5-TRIAROYLBENZENES; DEGRADATION AB The synthesis and physical properties of cyanurate networks formed from two new tricyanate monomers, 1,3,5-tris[(4-cyanatophenylmethyl]benzene and 3,5-bis[(4-cyanatophenylmethyl)]phenylcyanate, are reported and compared to those of 1,1,1-tris[(4-cyanatophenyl)]ethane (also known as ESR-255). All three networks possessed somewhat different aromatic contents and cross-link densities; however, the thermochemical stability of these networks, as determined by TGA, was outstanding, with that of 1,3,5-tris[(4-cyanatophenylmethyl)]benzene being among the best known for organic cyanate esters despite its comparatively high segmental flexibility. Moreover, the moisture uptake of cured 1,3,5-tris[(4-cyanatophenylmethyl)]benzene, at 2.2% after 96 h immersed in 85 degrees C water, was comparatively low for a cyanate ester network with a glass transition temperature of 320 degrees C at full cure. When cured for 24 h at 210 degrees C, the dry glass transition temperatures of the networks ranged from 245 to 285 degrees C, while the wet glass transition temperatures ranged from 225 to 240 degrees C. The similarity in glass transition temperatures resulted from a lower extent of cure in the networks with more rigid segments. In essence, for networks with very high glass transition temperatures at full cure, the process conditions, rather than the rigidity of the network, determined the attainable glass transition temperature. Because networks with a higher extent of cure tend to exhibit slower long-term degradation, in this case, the networks with greater segment flexibility enabled superior performance despite exhibiting a lower glass transition temperature at full cure. These results illustrate that, in contrast to the prevailing heuristics for improving the performance of high-temperature thermosetting polymer networks, a more flexible network with a lower glass transition temperature at full cure can offer an optimal combination of thermomechanical and thermochemical performance. C1 [Guenthner, Andrew J.; Mabry, Joseph M.] USAF, Res Lab, Prop Directorate, Edwards Afb, CA 93524 USA. [Davis, Matthew C.; Ford, Michael D.; Groshens, Thomas J.; Baldwin, Lawrence C.] USN, Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA. [Reams, Josiah T.] USAF, Natl Res Council, Res Lab, Edwards Afb, CA 93524 USA. [Lubin, Lisa M.] ERC Inc, Edwards Afb, CA 93524 USA. RP Guenthner, AJ (reprint author), USAF, Res Lab, Prop Directorate, Edwards Afb, CA 93524 USA. EM andrew.guenthner@edwards.af.mil FU Office of Naval Research; Air Force Office of Scientific Research; Air Force Research Laboratory; National Research Council Research Associateship Program FX The support of the Office of Naval Research, the Air Force Office of Scientific Research, the Air Force Research Laboratory, and the National Research Council Research Associateship Program (J.T.R.) is gratefully acknowledged. The authors thank Dr. Suresh Sun of AFRL for helpful advice on the flash chromatography of monomer 1. NR 57 TC 10 Z9 10 U1 1 U2 22 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD DEC 25 PY 2012 VL 45 IS 24 BP 9707 EP 9718 DI 10.1021/ma302300g PG 12 WC Polymer Science SC Polymer Science GA 057LD UT WOS:000312563900017 ER PT J AU Kong, BD Zeng, C Gaskill, DK Wang, KL Kim, KW AF Kong, B. D. Zeng, C. Gaskill, D. K. Wang, K. L. Kim, K. W. TI Two dimensional crystal tunneling devices for THz operation SO APPLIED PHYSICS LETTERS LA English DT Article ID HEXAGONAL BORON-NITRIDE; ELECTRONIC-STRUCTURE; TRANSISTORS; FREQUENCIES AB Two dimensional crystal heterostructures are shown to possess a unique opportunity for nonlinear THz devices. In contrast to the oxide tunneling barrier, the uniformity of layered crystal insulators provides an ideal condition for tunneling barriers in the atomic scale. Numerical calculations based on a first-principles method clearly indicate the feasibility of diode operation with barriers as thin as two monolayers when placed between graphene-metal asymmetric electrodes. Further analysis predicts cut-off frequencies over 10 THz while maintaining strong nonlinearity for zero-bias rectification. Application to hot electron transistors is also examined, illustrating potentially superior performance in the frequency range inaccessible thus far. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4773514] C1 [Kong, B. D.; Kim, K. W.] N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA. [Zeng, C.; Wang, K. L.] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA. [Gaskill, D. K.] USN, Res Lab, Washington, DC 20375 USA. RP Kong, BD (reprint author), N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA. EM kwk@ncsu.edu RI KONG, BYOUNG DON/A-2186-2012 OI KONG, BYOUNG DON/0000-0003-4072-4399 FU SRC Focus Center on Functional Engineered Nano Architectonics (FENA); US Army Research Office; Office of Naval Research FX This work was supported, in part, by the SRC Focus Center on Functional Engineered Nano Architectonics (FENA), US Army Research Office, and the Office of Naval Research. NR 30 TC 12 Z9 12 U1 1 U2 56 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 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 24 PY 2012 VL 101 IS 26 AR 263112 DI 10.1063/1.4773514 PG 5 WC Physics, Applied SC Physics GA 061EN UT WOS:000312830700056 ER PT J AU Defang, GN Martin, NJ Burgess, TH Millar, EV Pecenka, LA Danko, JR Arnold, JC Kochel, TJ Luke, TC AF Defang, Gabriel N. Martin, Nicholas J. Burgess, Timothy H. Millar, Eugene V. Pecenka, LeNae A. Danko, Janine R. Arnold, John C. Kochel, Tadeusz J. Luke, Thomas C. TI Comparative Analysis of Hemagglutination Inhibition Titers Generated Using Temporally Matched Serum and Plasma Samples SO PLOS ONE LA English DT Article ID INFLUENZA-VIRUS; IMMUNOGENICITY; ANTIBODIES; VACCINE AB Influenza-specific hemaggluitination inhibition (HAI) antibody titer, an indicator of immunity to influenza, is often used to measure exposure to influenza in surveillance and immunogenicity studies. Traditionally, serum has been the specimen of choice for HAI assays, but a desire to reduce the amount of blood collected during studies and the availability of plasma in archived sample collections warrant the evaluation of plasma for HAI titer. Therefore, the relationship between serum and plasma HAI titer values is of great interest. Here, we compare HAI titers determined on temporally matched serum and plasma (citrated and heparinized) using influenza A and B viruses. Bland-Altman plots, McNemar's test, and geometric coefficient of variation were used respectively for evaluating agreement, correlation and variability in the serum-plasma titer results. We observed a high degree of agreement (80.5%-98.8%) and correlation (r = 0.796-0.964)in the serum and matched plasma titer values although plasma titers were generally lower than corresponding serum titers. Calculated seropositive (HAI >= 40) rates were higher using serum titers than with plasma titers, but seroconversion rates were unaffected by sample type. Stronger agreement and decreased variability in titers were seen between serum and citrated plasma than between serum and heparinized plasma. Overall, these data suggest that serum or plasma can be used in serodiagnostic HAI assays, but seropositive rates may be underestimated using plasma HAI titers. The type of anticoagulant present in plasma may affect HAI titer values and warrants further investigation. Citation: Defang GN, Martin NJ, Burgess TH, Millar EV, Pecenka LA, et al. (2012) Comparative Analysis of Hemagglutination Inhibition Titers Generated Using Temporally Matched Serum and Plasma Samples. PLoS ONE 7(12): e48229. doi:10.1371/journal.pone.0048229 C1 [Defang, Gabriel N.; Martin, Nicholas J.; Pecenka, LeNae A.; Danko, Janine R.; Kochel, Tadeusz J.; Luke, Thomas C.] USN, Med Res Ctr, Viral & Rickettsial Dis Dept, Silver Spring, MD USA. [Burgess, Timothy H.; Millar, Eugene V.] Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, Infect Dis Clin Res Program, Bethesda, MD 20814 USA. [Arnold, John C.] USN, Med Ctr, San Diego, CA 92152 USA. RP Martin, NJ (reprint author), USN, Med Res Ctr, Viral & Rickettsial Dis Dept, Silver Spring, MD USA. EM nicholas.martin@med.navy.mil FU Armed Forces Health Surveillance Center Global Emerging Infections Surveillance and Response System project [I0279_11_NM]; Navy Bureau of Medicine Defense Health Program [0000188D.0000.000.A0312] FX This work was supported by Armed Forces Health Surveillance Center Global Emerging Infections Surveillance and Response System project I0279_11_NM and Navy Bureau of Medicine Defense Health Program award# 0000188D.0000.000.A0312. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 17 TC 5 Z9 5 U1 0 U2 1 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 DEC 20 PY 2012 VL 7 IS 12 AR e48229 DI 10.1371/journal.pone.0048229 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 060RA UT WOS:000312794500004 PM 23284613 ER PT J AU Ackermann, M Ajello, M Atwood, WB Baldini, L Barbiellini, G Bastieri, D Bechtol, K Bellazzini, R Blandford, RD Bloom, ED Bonamente, E Borgland, AW Bottacini, E Brandt, TJ Bregeon, J Brigida, M Bruel, P Buehler, R Buson, S Caliandro, GA Cameron, RA Caraveo, PA Casandjian, JM Cecchi, C Charles, E Chekhtman, A Chiang, J Ciprini, S Claus, R Cohen-Tanugi, J Conrad, J Cuoco, A Cutini, S D'Ammando, F de Angelis, A de Palma, F Dermer, CD Silva, EDE Drell, PS Drlica-Wagner, A Falletti, L Favuzzi, C Fegan, SJ Focke, WB Fukazawa, Y Funk, S Fusco, P Gargano, F Gasparrini, D Germani, S Giglietto, N Giordano, F Giroletti, M Glanzman, T Godfrey, G Grenier, IA Guiriec, S Gustafsson, M Hadasch, D Hayashida, M Horan, D Hughes, RE Jackson, MS Jogler, T Johannesson, G Johnson, AS Kamae, T Knodlseder, J Kuss, M Lande, J Latronico, L Lionetto, AM Garde, ML Longo, F Loparco, F Lott, B Lovellette, MN Lubrano, P Mazziotta, MN McEnery, JE Mehault, J Michelson, PF Mitthumsiri, W Mizuno, T Moiseev, AA Monte, C Monzani, ME Morselli, A Moskalenko, IV Murgia, S Naumann-Godo, M Norris, JP Nuss, E Ohsugi, T Orienti, M Orlando, E Ormes, JF Paneque, D Panetta, JH Pesce-Rollins, M Pierbattista, M Piron, F Pivato, G Poon, H Raino, S Rando, R Razzano, M Razzaque, S Reimer, A Reimer, O Romoli, C Sbarra, C Scargle, JD Sgro, C Siskind, EJ Spandre, G Spinelli, P Stawarz, L Strong, AW Suson, DJ Tajima, H Takahashi, H Tanaka, T Thayer, JG Thayer, JB Tibaldo, L Tinivella, M Tosti, G Troja, E Usher, TL Vandenbroucke, J Vasileiou, V Vianello, G Vitale, V Waite, AP Wallace, E Wood, KS Wood, M Yang, Z Zaharijas, G Zimmer, S AF Ackermann, M. Ajello, M. Atwood, W. B. Baldini, L. Barbiellini, G. Bastieri, D. Bechtol, K. Bellazzini, R. Blandford, R. D. Bloom, E. D. Bonamente, E. Borgland, A. W. Bottacini, E. Brandt, T. J. Bregeon, J. Brigida, M. Bruel, P. Buehler, R. Buson, S. Caliandro, G. A. Cameron, R. A. Caraveo, P. A. Casandjian, J. M. Cecchi, C. Charles, E. Chekhtman, A. Chiang, J. Ciprini, S. Claus, R. Cohen-Tanugi, J. Conrad, J. Cuoco, A. Cutini, S. D'Ammando, F. de Angelis, A. de Palma, F. Dermer, C. D. do Couto e Silva, E. Drell, P. S. Drlica-Wagner, A. Falletti, L. Favuzzi, C. Fegan, S. J. Focke, W. B. Fukazawa, Y. Funk, S. Fusco, P. Gargano, F. Gasparrini, D. Germani, S. Giglietto, N. Giordano, F. Giroletti, M. Glanzman, T. Godfrey, G. Grenier, I. A. Guiriec, S. Gustafsson, M. Hadasch, D. Hayashida, M. Horan, D. Hughes, R. E. Jackson, M. S. Jogler, T. Johannesson, G. Johnson, A. S. Kamae, T. Knoedlseder, J. Kuss, M. Lande, J. Latronico, L. Lionetto, A. M. Garde, M. Llena Longo, F. Loparco, F. Lott, B. Lovellette, M. N. Lubrano, P. Mazziotta, M. N. McEnery, J. E. Mehault, J. Michelson, P. F. Mitthumsiri, W. Mizuno, T. Moiseev, A. A. Monte, C. Monzani, M. E. Morselli, A. Moskalenko, I. V. Murgia, S. Naumann-Godo, M. Norris, J. P. Nuss, E. Ohsugi, T. Orienti, M. Orlando, E. Ormes, J. F. Paneque, D. Panetta, J. H. Pesce-Rollins, M. Pierbattista, M. Piron, F. Pivato, G. Poon, H. Raino, S. Rando, R. Razzano, M. Razzaque, S. Reimer, A. Reimer, O. Romoli, C. Sbarra, C. Scargle, J. D. Sgro, C. Siskind, E. J. Spandre, G. Spinelli, P. Stawarz, Lukasz Strong, A. W. Suson, D. J. Tajima, H. Takahashi, H. Tanaka, T. Thayer, J. G. Thayer, J. B. Tibaldo, L. Tinivella, M. Tosti, G. Troja, E. Usher, T. L. Vandenbroucke, J. Vasileiou, V. Vianello, G. Vitale, V. Waite, A. P. Wallace, E. Wood, K. S. Wood, M. Yang, Z. Zaharijas, G. Zimmer, S. TI CONSTRAINTS ON THE GALACTIC HALO DARK MATTER FROM FERMI-LAT DIFFUSE MEASUREMENTS SO ASTROPHYSICAL JOURNAL LA English DT Article DE dark matter; Galaxy: halo; gamma rays: diffuse background; methods: statistical ID LARGE-AREA TELESCOPE; GAMMA-RAY EMISSION; MILKY-WAY HALO; SOURCE CATALOG; GALAXY; RADIATION; DENSITY; MODELS; SUBSTRUCTURE; ANNIHILATION AB We have performed an analysis of the diffuse gamma-ray emission with the Fermi Large Area Telescope (LAT) in the Milky Way halo region, searching for a signal from dark matter annihilation or decay. In the absence of a robust dark matter signal, constraints are presented. We consider both gamma rays produced directly in the dark matter annihilation/decay and produced by inverse Compton scattering of the e(+)/e(-) produced in the annihilation/decay. Conservative limits are derived requiring that the dark matter signal does not exceed the observed diffuse gamma-ray emission. A second set of more stringent limits is derived based on modeling the foreground astrophysical diffuse emission using the GALPROP code. Uncertainties in the height of the diffusive cosmic-ray halo, the distribution of the cosmic-ray sources in the Galaxy, the index of the injection cosmic-ray electron spectrum, and the column density of the interstellar gas are taken into account using a profile likelihood formalism, while the parameters governing the cosmic-ray propagation have been derived from fits to local cosmic-ray data. The resulting limits impact the range of particle masses over which dark matter thermal production in the early universe is possible, and challenge the interpretation of the PAMELA/Fermi-LAT cosmic ray anomalies as the annihilation of dark matter. C1 [Ackermann, M.] Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany. [Ajello, M.; Bechtol, K.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Bottacini, E.; Buehler, R.; Cameron, R. A.; Charles, E.; Chekhtman, A.; Chiang, J.; Claus, R.; do Couto e Silva, E.; Drell, P. S.; Drlica-Wagner, A.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Jogler, T.; Johnson, A. S.; Kamae, T.; Lande, J.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Orlando, E.; Paneque, D.; Panetta, J. H.; Reimer, A.; Reimer, O.; Tajima, H.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Usher, T. L.; Vandenbroucke, J.; Vianello, G.; Waite, A. P.; Wood, M.] Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA. [Ajello, M.; Bechtol, K.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Bottacini, E.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; do Couto e Silva, E.; Drell, P. S.; Drlica-Wagner, A.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Jogler, T.; Johnson, A. S.; Kamae, T.; Lande, J.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Orlando, E.; Paneque, D.; Panetta, J. H.; Reimer, A.; Reimer, O.; Tajima, H.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Usher, T. L.; Vandenbroucke, J.; Vianello, G.; Waite, A. P.; Wood, M.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA. [Ajello, M.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Atwood, W. B.; Razzano, M.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA. [Atwood, W. B.; Razzano, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Baldini, L.] Univ Pisa, I-56127 Pisa, Italy. [Baldini, L.; Bellazzini, R.; Bregeon, J.; Kuss, M.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.; Tinivella, M.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy. [Barbiellini, G.; Longo, F.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy. [Barbiellini, G.; Longo, F.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy. [Bastieri, D.; Buson, S.; Gustafsson, M.; Rando, R.; Sbarra, C.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. [Bastieri, D.; Buson, S.; Pivato, G.; Poon, H.; Rando, R.; Romoli, C.; Tibaldo, L.] Univ Padua, Dipartimento Fis & Astron G Galilei, I-35131 Padua, Italy. [Bonamente, E.; Cecchi, C.; D'Ammando, F.; Germani, S.; Lubrano, P.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy. [Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy. [Brandt, T. J.; Guiriec, S.; McEnery, J. E.; Moiseev, A. A.; Troja, E.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Univ Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy. [Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Politecn Bari, I-70126 Bari, Italy. [Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy. [Bruel, P.; Fegan, S. J.; Horan, D.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France. [Caliandro, G. A.; Hadasch, D.] Inst Ciencies Espai IEEE CSIC, E-08193 Barcelona, Spain. [Caraveo, P. A.] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy. [Casandjian, J. M.; Grenier, I. A.; Naumann-Godo, M.; Pierbattista, M.] Univ Paris Diderot, CEA Saclay, Serv Astrophys, Lab AIM,CEA IRFU,CNRS, F-91191 Gif Sur Yvette, France. [Chekhtman, A.; Razzaque, S.; Wood, K. S.] George Mason Univ, Ctr Earth Observing & Space Res, Coll Sci, Fairfax, VA 22030 USA. [Ciprini, S.] ASI Sci Data Ctr, I-00044 Frascati, Roma, Italy. [Cohen-Tanugi, J.; Falletti, L.; Mehault, J.; Nuss, E.; Piron, F.; Vasileiou, V.] Univ Montpellier 2, CNRS, IN2P3, Lab Univers & Particules Montpellier, Montpellier, France. [Conrad, J.; Garde, M. Llena; Yang, Z.; Zaharijas, G.; Zimmer, S.] Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden. [Conrad, J.; Cuoco, A.; Jackson, M. S.; Garde, M. Llena; Yang, Z.; Zaharijas, G.; Zimmer, S.] AlbaNova, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden. [Cutini, S.; Gasparrini, D.] Agenzia Spaziale Italiana ASI Sci Data Ctr, I-00044 Frascati, Roma, Italy. [D'Ammando, F.] IASF Palermo, I-90146 Palermo, Italy. [D'Ammando, F.] INAF Ist Astrofis Spaziale & Fis Cosm, I-00133 Rome, Italy. [de Angelis, A.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy. [de Angelis, A.] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy. [Dermer, C. D.; Lovellette, M. N.] USN, Div Space Sci, Res Lab, Washington, DC 20375 USA. [Fukazawa, Y.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan. [Giroletti, M.; Orienti, M.] INAF Ist Radioastron, I-40129 Bologna, Italy. [Hayashida, M.] Kyoto Univ, Grad Sch Sci, Dept Astron, Sakyo Ku, Kyoto 6068502, Japan. [Hughes, R. E.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA. [Jackson, M. S.] Royal Inst Technol KTH, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden. [Johannesson, G.] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland. [Knoedlseder, J.] CNRS, IRAP, F-31028 Toulouse 4, France. [Knoedlseder, J.] Univ Toulouse, UPS OMP, GAHEC, IRAP, Toulouse, France. [Latronico, L.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy. [Lionetto, A. M.; Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy. [Lionetto, A. M.; Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy. [Lott, B.] Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France. [McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. [McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA. [Mizuno, T.; Ohsugi, T.] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan. [Moiseev, A. A.] Ctr Res & Explorat Space Sci & Technol CRESST, Greenbelt, MD 20771 USA. [Norris, J. P.] Boise State Univ, Dept Phys, Boise, ID 83725 USA. [Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA. [Paneque, D.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. [Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria. [Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria. [Scargle, J. D.] NASA, Div Space Sci, Ames Res Ctr, Moffett Field, CA 94035 USA. [Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA. [Stawarz, Lukasz] JAXA, Inst Space & Astronaut Sci, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan. [Stawarz, Lukasz] Jagiellonian Univ, Astron Observ, PL-30244 Krakow, Poland. [Strong, A. W.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA. [Tajima, H.] Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan. [Vianello, G.] CIFS, I-10133 Turin, Italy. [Wallace, E.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Zaharijas, G.] CEA Saclay, Inst Phys Theor, F-91191 Gif Sur Yvette, France. RP Ackermann, M (reprint author), Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany. EM conrad@fysik.su.se; cuoco@fysik.su.se; yang.395@mps.ohio-state.edu; gzah@physto.se RI Reimer, Olaf/A-3117-2013; Moskalenko, Igor/A-1301-2007; Mazziotta, Mario /O-8867-2015; Sgro, Carmelo/K-3395-2016; Orlando, E/R-5594-2016; Tosti, Gino/E-9976-2013; Rando, Riccardo/M-7179-2013; Morselli, Aldo/G-6769-2011; Funk, Stefan/B-7629-2015; Johannesson, Gudlaugur/O-8741-2015; Loparco, Francesco/O-8847-2015; Gargano, Fabio/O-8934-2015; giglietto, nicola/I-8951-2012; OI Gasparrini, Dario/0000-0002-5064-9495; Baldini, Luca/0000-0002-9785-7726; Caraveo, Patrizia/0000-0003-2478-8018; Sgro', Carmelo/0000-0001-5676-6214; Zaharijas, Gabrijela/0000-0001-8484-7791; SPINELLI, Paolo/0000-0001-6688-8864; Rando, Riccardo/0000-0001-6992-818X; Bastieri, Denis/0000-0002-6954-8862; Pesce-Rollins, Melissa/0000-0003-1790-8018; orienti, monica/0000-0003-4470-7094; Giroletti, Marcello/0000-0002-8657-8852; Reimer, Olaf/0000-0001-6953-1385; Moskalenko, Igor/0000-0001-6141-458X; Mazziotta, Mario /0000-0001-9325-4672; Morselli, Aldo/0000-0002-7704-9553; Funk, Stefan/0000-0002-2012-0080; Johannesson, Gudlaugur/0000-0003-1458-7036; Loparco, Francesco/0000-0002-1173-5673; Gargano, Fabio/0000-0002-5055-6395; giglietto, nicola/0000-0002-9021-2888; De Angelis, Alessandro/0000-0002-3288-2517 FU K. A. Wallenberg Foundation FX Royal Swedish Academy of Sciences Research Fellow, funded by a grant from the K. A. Wallenberg Foundation. NR 75 TC 100 Z9 100 U1 5 U2 26 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 20 PY 2012 VL 761 IS 2 AR 91 DI 10.1088/0004-637X/761/2/91 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 050YH UT WOS:000312090300010 ER PT J AU Chen, J AF Chen, James TI STRUCTURE OF NON-FORCE-FREE MAGNETIC FLUX ROPES IN AN AMBIENT MEDIUM SO ASTROPHYSICAL JOURNAL LA English DT Article DE interplanetary medium; Sun: corona; Sun: coronal mass ejections (CMEs); Sun: helioseismology; stars: magnetic field; Sun: magnetic topology ID CORONAL MASS EJECTION; GEOMAGNETIC STORMS; SOLAR ATMOSPHERE; CONVECTION ZONE; CLOUDS; EMERGENCE; FIELDS; TUBES; RECONNECTION; TOPOLOGY AB The structure of non-force-free equilibrium magnetic flux ropes in an ambient medium of specified pressure p(a) is studied. A flux rope is a self-organized magnetized plasma structure consisting of a localized channel of electric current and the magnetic field arising from this current. An analytic method is developed to obtain one-dimensional equilibrium solutions satisfying c(-1) J x B - del p = 0 subject to the requirements that (1) all physical quantities be nonsingular and continuous, (2) pressure p(r) be physically admissible-real and non-negative, and (3) the magnetic field profile have "minimum complexity." The solutions are shown to be characterized by two parameters, B-t* = (B) over bar (t)/(8 pi p(a))(1/2) and B-p* = B-pa/(8 pi p(a))(1/2), where (B) over bar (t) is the toroidal (axial) field averaged over the cross-sectional radius a and B-pa is the poloidal (azimuthal) field at the edge of the current channel (r = a). The physical constraint on pressure defines equilibrium boundaries in the B-t*-B-p* space beyond which no physical solutions exist. The method is illustrated with a number of families of solutions governed by distinct physical constraints. The force-free limit with p(a) not equal 0 is investigated and is found to be characterized by plasma beta = infinity. The local Alfven speed V-A and plasma beta are computed. The results are scale-invariant. C1 USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA. RP Chen, J (reprint author), USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA. EM James.Chen@nrl.navy.mil FU Naval Research Laboratory Base Program FX This work was supported by the Naval Research Laboratory Base Program. NR 53 TC 6 Z9 6 U1 0 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 20 PY 2012 VL 761 IS 2 AR 179 DI 10.1088/0004-637X/761/2/179 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 050YH UT WOS:000312090300098 ER PT J AU Crockett, CJ Mahmud, NI Prato, L Johns-Krull, CM Jaffe, DT Hartigan, PM Beichman, CA AF Crockett, Christopher J. Mahmud, Naved I. Prato, L. Johns-Krull, Christopher M. Jaffe, Daniel T. Hartigan, Patrick M. Beichman, Charles A. TI A SEARCH FOR GIANT PLANET COMPANIONS TO T TAURI STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE planets and satellites: detection; stars: pre-main sequence; techniques: radial velocities ID RADIAL-VELOCITY VARIABILITY; MAIN-SEQUENCE STARS; BROWN DWARF DESERT; KECK II TELESCOPE; ECHELLE SPECTROGRAPH; PHOTOMETRIC VARIABILITY; STELLAR ACTIVITY; MAGNETIC-FIELDS; MASS; PRECISION AB We present results from an ongoing multiwavelength radial velocity (RV) survey of the Taurus-Auriga star-forming region as part of our effort to identify pre-main-sequence giant planet hosts. These 1-3 Myr old T Tauri stars present significant challenges to traditional RV surveys. The presence of strong magnetic fields gives rise to large, cool star spots. These spots introduce significant RV jitter which can mimic the velocity modulation from a planet-mass companion. To distinguish between spot-induced and planet-induced RV modulation, we conduct observations at similar to 6700 angstrom and similar to 2.3 mu m and measure the wavelength dependence (if any) in the RV amplitude. CSHELL observations of the known exoplanet host Gl 86 demonstrate our ability to detect not only hot Jupiters in the near-infrared but also secular trends from more distant companions. Observations of nine very young stars reveal a typical reduction in RV amplitude at the longer wavelengths by a factor of similar to 2-3. While we cannot confirm the presence of planets in this sample, three targets show different periodicities in the two wavelength regions. This suggests different physical mechanisms underlying the optical and the K-band variability. C1 [Crockett, Christopher J.] USN Observ, Flagstaff, AZ 86001 USA. [Prato, L.] Lowell Observ, Flagstaff, AZ 86001 USA. [Mahmud, Naved I.; Johns-Krull, Christopher M.; Hartigan, Patrick M.] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA. [Jaffe, Daniel T.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA. [Beichman, Charles A.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. [Beichman, Charles A.] CALTECH, NASA Exoplanet Sci Inst NExScI, Pasadena, CA 91125 USA. RP Crockett, CJ (reprint author), USN Observ, 10391 W Naval Observ Rd, Flagstaff, AZ 86001 USA. EM ccrockett@nofs.navy.mil; naved@rice.edu; lprato@lowell.edu; cmj@rice.edu; dtj@astro.as.utexas.edu FU SIM Young Planets Key Project; NASA [05-SSO05-86, 07-SSO07-86, NCC 5-538]; NSF; W.M. Keck Foundation FX The authors thank our anonymous referee for a thorough and enthusiastic review. We acknowledge the SIM Young Planets Key Project for research support; funding was also provided by NASA Origins grants 05-SSO05-86 and 07-SSO07-86. This work made use of the SIMBAD database, the NASA Astrophysics Data System, and the Two Micron All Sky Survey (2MASS), a joint project of the University of Massachusetts and IPAC/Caltech, funded by NASA and the NSF. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. We recognize the significant cultural role that Mauna Kea plays in the indigenous Hawaiian community and are grateful for the opportunity to observe there.; Visiting Astronomer at the Infrared Telescope Facility, which is operated by the University of Hawaii under Cooperative Agreement No. NCC 5-538 with the National Aeronautics and Space Administration, Science Mission Directorate, Planetary Astronomy Program. NR 67 TC 21 Z9 21 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 20 PY 2012 VL 761 IS 2 AR 164 DI 10.1088/0004-637X/761/2/164 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 050YH UT WOS:000312090300083 ER PT J AU Makarov, VV Berghea, C Efroimsky, M AF Makarov, Valeri V. Berghea, Ciprian Efroimsky, Michael TI DYNAMICAL EVOLUTION AND SPIN-ORBIT RESONANCES OF POTENTIALLY HABITABLE EXOPLANETS: THE CASE OF GJ 581d SO ASTROPHYSICAL JOURNAL LA English DT Article DE celestial mechanics; planet-star interactions; planets and satellites: detection; planets and satellites: dynamical evolution and stability; planets and satellites: individual (GJ 581) ID EXTRA-SOLAR PLANETS; M-CIRCLE-PLUS; TIDAL DISSIPATION; HARPS SEARCH; SUPER-EARTHS; SYSTEM; ZONE; MOMENTS; TIDES; AXES AB GJ 581d is a potentially habitable super-Earth in the multiple system of exoplanets orbiting a nearby M dwarf. We investigate this planet's long-term dynamics with an emphasis on its probable final rotation states acquired via tidal interaction with the host. The published radial velocities for the star are re-analyzed with a benchmark planet detection algorithm to confirm that there is no evidence for the recently proposed two additional planets (f and g). Limiting the scope to the four originally detected planets, we assess the dynamical stability of the system and find bounded chaos in the orbital motion. For the planet d, the characteristic Lyapunov time is 38 yr. Long-term numerical integration reveals that the system of four planets is stable, with the eccentricity of the planet d changing quasi-periodically in a tight range around 0.27, and with its semimajor axis varying only a little. The spin-orbit interaction of GJ 581d with its host star is dominated by the tides exerted by the star on the planet. We model this interaction, assuming a terrestrial composition of the mantle. Besides the triaxiality-caused torque and the secular part of the tidal torque, which are conventionally included in the equation of motion, we also include the tidal torques' oscillating components. It turns out that, depending on the mantle temperature, the planet gets trapped into the 2: 1 or an even higher spin-orbit resonance. It is very improbable that the planet could have reached the 1: 1 resonance. This improves the possibility of the planet being suitable for sustained life. C1 [Makarov, Valeri V.; Berghea, Ciprian; Efroimsky, Michael] USN Observ, Washington, DC 20392 USA. RP Makarov, VV (reprint author), USN Observ, 3450 Massachusetts Ave NW, Washington, DC 20392 USA. EM vvm@usno.navy.mil; ciprian.berghea@usno.navy.mil; michael.efroimsky@usno.navy.mil OI Makarov, Valeri/0000-0003-2336-7887; Efroimsky, Michael/0000-0003-1249-9622 NR 41 TC 24 Z9 24 U1 1 U2 17 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 DEC 20 PY 2012 VL 761 IS 2 AR 83 DI 10.1088/0004-637X/761/2/83 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 050YH UT WOS:000312090300002 ER PT J AU Mihos, JC Keating, KM Holley-Bockelmann, K Pisano, DJ Kassim, NE AF Mihos, J. Christopher Keating, Katie M. Holley-Bockelmann, Kelly Pisano, D. J. Kassim, Namir E. TI THE H I ENVIRONMENT OF THE M101 GROUP SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies: dwarf; galaxies: evolution; galaxies: individual (M101); galaxies: interactions; galaxies: ISM ID HIGH-VELOCITY CLOUDS; NEUTRAL HYDROGEN CLOUDS; DWARF IRREGULAR GALAXY; DARK-MATTER MINIHALOS; TULLY-FISHER RELATION; LOCAL GROUP; FORMATION HISTORIES; ATOMIC-HYDROGEN; STAR-FORMATION; GAS ACCRETION AB We present a wide (8 degrees.5 x 6 degrees.7, 1050 x 825 kpc), deep (sigma(NHI) = 10(16.8)-10(17.5) cm(-2)) neutral hydrogen (H I) map of the M101 galaxy group. We identify two new Hi sources in the group environment, one an extremely low surface brightness (and hitherto unknown) dwarf galaxy, and the other a starless Hi cloud, possibly primordial in origin. Our data show that M101' s extended Hi envelope takes the form of a similar to 100 kpc long tidal loop or plume of Hi extending to the southwest of the galaxy. The plume has an Hi mass of similar to 10(8) M-circle dot and a peak column density of N-HI = 5 x 10(17) cm(-2), and while it rotates with the main body of M101, it shows kinematic peculiarities suggestive of a warp or flaring out of the rotation plane of the galaxy. We also find two new H I clouds near the plume with masses similar to 10(7) M-circle dot, similar to H I clouds seen in the M81/M82 group, and likely also tidal in nature. Comparing to deep optical imaging of the M101 group, neither the plume nor the clouds have any extended optical counterparts down to a limiting surface brightness of mu(B) = 29.5. We also trace Hi at intermediate velocities between M101 and NGC 5474, strengthening the case for a recent interaction between the two galaxies. The kinematically complex Hi structure in the M101 group, coupled with the optical morphology of M101 and its companions, suggests that the group is in a dynamically active state that is likely common for galaxies in group environments. C1 [Mihos, J. Christopher] Case Western Reserve Univ, Dept Astron, Cleveland, OH 44106 USA. [Keating, Katie M.] Rincon Res Corp, Tucson, AZ 85711 USA. [Holley-Bockelmann, Kelly] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. [Holley-Bockelmann, Kelly] Fisk Univ, Dept Phys, Nashville, TN 37208 USA. [Pisano, D. J.] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA. [Kassim, Namir E.] USN, Res Lab, Washington, DC 20375 USA. RP Mihos, JC (reprint author), Case Western Reserve Univ, Dept Astron, Cleveland, OH 44106 USA. EM mihos@case.edu; kmk@rincon.com; k.holley@vanderbilt.edu; djpisano@mail.wvu.edu; namir.kassim@nrl.navy.mil OI Mihos, Chris/0000-0002-7089-8616 FU NSF [AST-0607526, AST-1108964, AST-0807873, 1066293, AST-1149491]; NRC; Alfred P. Sloan Foundation; National Science Foundation; U.S. Department of Energy; National Aeronautics and Space Administration; Japanese Monbukagakusho; Max Planck Society; Higher Education Funding Council for England; American Museum of Natural History; Astrophysical Institute Potsdam; University of Basel; University of Cambridge; Case Western Reserve University; University of Chicago; Drexel University; Fermilab; Institute for Advanced Study; Japan Participation Group; Johns Hopkins University; Joint Institute for Nuclear Astrophysics; Kavli Institute for Particle Astrophysics and Cosmology; Korean Scientist Group; Chinese Academy of Sciences (LAMOST); Los Alamos National Laboratory; Max Planck Institute for Astronomy (MPIA); Max Planck Institute for Astrophysics (MPA); New Mexico State University; Ohio State University; University of Pittsburgh; University of Portsmouth; Princeton University; United States Naval Observatory; University of Washington FX J.C.M.'s work on this project has been funded by the NSF through grants AST-0607526 and AST-1108964. K. M. K. acknowledges the NRC Research Associateship program for funding support. K.H.-B. acknowledges support from NSF CAREER award AST-0807873 and thanks the Aspen Center for Physics (supported through NSF grant 1066293) for hospitality and a lovely office to puzzle over p-v diagrams. D.J.P. acknowledges support from NSF CAREER grant AST-1149491. Basic research in radio astronomy at the Naval Research Laboratory is supported by 6.1 base funding. We also thank Stacy McGaugh for several helpful discussions.; This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web site is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. The Participating Institutions are the American Museum of Natural History, Astrophysical Institute Potsdam, University of Basel, University of Cambridge, Case Western Reserve University, University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max Planck Institute for Astronomy (MPIA), the Max Planck Institute for Astrophysics (MPA), New Mexico State University, Ohio State University, University of Pittsburgh, University of Portsmouth, Princeton University, the United States Naval Observatory, and the University of Washington. NR 70 TC 13 Z9 14 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 20 PY 2012 VL 761 IS 2 AR 186 DI 10.1088/0004-637X/761/2/186 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 050YH UT WOS:000312090300105 ER PT J AU Stimpert, AK Peavey, LE Friedlaender, AS Nowacek, DP AF Stimpert, Alison K. Peavey, Lindsey E. Friedlaender, Ari S. Nowacek, Douglas P. TI Humpback Whale Song and Foraging Behavior on an Antarctic Feeding Ground SO PLOS ONE LA English DT Article ID EASTERN NORTH PACIFIC; MEGAPTERA-NOVAEANGLIAE; ATLANTIC-OCEAN; ACOUSTIC DETECTIONS; HAWAIIAN WATERS; FIN WHALES; SOUND; MIGRATION; WESTERN; KINEMATICS AB Reports of humpback whale (Megaptera novaeangliae) song chorusing occurring outside the breeding grounds are becoming more common, but song structure and underwater behavior of individual singers on feeding grounds and migration routes remain unknown. Here, ten humpback whales in the Western Antarctic Peninsula were tagged in May 2010 with non-invasive, suction-cup attached tags to study foraging ecology and acoustic behavior. Background song was identified on all ten records, but additionally, acoustic records of two whales showed intense and continuous singing, with a level of organization and structure approaching that of typical breeding ground song. The songs, produced either by the tagged animals or close associates, shared phrase types and theme structure with one another, and some song bouts lasted close to an hour. Dive behavior of tagged animals during the time of sound production showed song occurring during periods of active diving, sometimes to depths greater than 100 m. One tag record also contained song in the presence of feeding lunges identified from the behavioral sensors, indicating that mating displays occur in areas worthy of foraging. These data show behavioral flexibility as the humpbacks manage competing needs to continue to feed and to prepare for the breeding season during late fall. This may also signify an ability to engage in breeding activities outside of the traditional, warm water breeding ground locations. C1 [Stimpert, Alison K.] USN, Dept Oceanog, Postgrad Sch, Monterey, CA 93943 USA. [Peavey, Lindsey E.] Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA. [Friedlaender, Ari S.; Nowacek, Douglas P.] Duke Univ, Marine Lab, Nicholas Sch Environm, Beaufort, NC 28516 USA. [Nowacek, Douglas P.] Duke Univ, Marine Lab, Pratt Sch Engn, Beaufort, NC 28516 USA. RP Stimpert, AK (reprint author), USN, Dept Oceanog, Postgrad Sch, Monterey, CA 93943 USA. EM akstimpe@nps.edu OI Peavey, Lindsey/0000-0003-4900-5921 FU National Science Foundation [ANT-07-39483]; Acoustical Society of America FX This material is based upon work supported by the National Science Foundation under Grant No. ANT-07-39483. The authors also gratefully acknowledge funding support from the F. V. Hunt Fellowship of the Acoustical Society of America. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 54 TC 9 Z9 9 U1 5 U2 106 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 DEC 19 PY 2012 VL 7 IS 12 AR e51214 DI 10.1371/journal.pone.0051214 PG 8 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 059HF UT WOS:000312694300015 PM 23284666 ER PT J AU Schmidt, AL Paskoff, G Shender, BS Bass, CR AF Schmidt, Allison L. Paskoff, Glenn Shender, Barry S. Bass, Cameron R. TI Risk of Lumbar Spine Injury From Cyclic Compressive Loading SO SPINE LA English DT Article DE fatigue failure; lumbar; whole-body vibration; repeated loading; compression ID WHOLE-BODY VIBRATION; LOW-BACK-PAIN; INTRAABDOMINAL PRESSURE; FATIGUE BEHAVIOR; HEALTH-RISK; POSTURE; JOINTS; DISORDERS; MECHANISM; EXPOSURE AB Study Design. Survival analyses of a large cohort of published lumbar spine compression fatigue tests. Objective. To produce the first large-scale evaluation of human lumbar spine tolerance to repetitive compressive loading and to evaluate and improve guidelines for human exposure to whole-body vibration and repeated mechanical shock environments. Summary of Background Data. Several studies have examined the effects of compressive cyclic loading on the lumbar spine. However, no previous effort has coalesced these studies and produced an injury risk analysis with an expanded sample size. Guidelines have been developed for exposure limits to repetitive loading (e. g., ISO 2631-5), but there has been no large-scale verification of the standard against experimental data. Methods. Survival analyses were performed using the results of 77 male and 28 female cadaveric spinal segment fatigue tests from 6 previously published studies. Segments were fixed at each end and exposed to axial cyclic compression. The effects of the number of cycles, load amplitude, sex, and age were examined through the use of survival analyses. Results. Number of cycles, load amplitude, sex, and age all are significant factors in the likelihood of bony failure in the spinal column. Using a modification of the risk prediction parameter from ISO 2631-5, an injury risk model was developed, which relates risk of vertebral failure to repeated compressive loading. The model predicts lifetime risks less than 7% for industrial machinery exposure from axial compression alone. There was a 38% risk for a high-speed planing craft operator, consistent with epidemiological evidence. Conclusion. A spinal fatigue model which predicts the risk of in vitro lumbar spinal failure within a narrow confidence interval has been developed. Age and sex were found to have significant effects on fatigue strength, with sex differences extending beyond those accounted for by endplate area disparities. C1 [Schmidt, Allison L.; Bass, Cameron R.] Duke Univ, Dept Biomed Engn, Durham, NC 27708 USA. [Paskoff, Glenn; Shender, Barry S.] USN, Air Warfare Ctr, Div Aircraft, Patuxent River, MD USA. RP Schmidt, AL (reprint author), Duke Univ, Dept Biomed Engn, 136 Hudson Hall,Box 90281, Durham, NC 27708 USA. EM allison.schmidt@duke.edu FU Department of the Navy and Naval Air Warfare Center, Patuxent River, MD; Department of Biomedical Engineering, Duke University, Durham, NC FX The Department of the Navy and Naval Air Warfare Center, Patuxent River, MD, and Department of Biomedical Engineering, Duke University, Durham, NC, funds were received to support this work. NR 51 TC 0 Z9 0 U1 1 U2 15 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0362-2436 J9 SPINE JI SPINE PD DEC 15 PY 2012 VL 37 IS 26 BP E1614 EP E1621 DI 10.1097/BRS.0b013e3182752a19 PG 8 WC Clinical Neurology; Orthopedics SC Neurosciences & Neurology; Orthopedics GA 055DV UT WOS:000312396300003 PM 23023594 ER PT J AU Sherwood, JE Mesner, OC Weintrob, AC Hadigan, CM Wilkins, KJ Crum-Cianflone, NF Aronson, NE AF Sherwood, Jeffrey E. Mesner, Octavio C. Weintrob, Amy C. Hadigan, Colleen M. Wilkins, Kenneth J. Crum-Cianflone, Nancy F. Aronson, Naomi E. TI Vitamin D Deficiency and Its Association With Low Bone Mineral Density, HIV-Related Factors, Hospitalization, and Death in a Predominantly Black HIV-Infected Cohort SO CLINICAL INFECTIOUS DISEASES LA English DT Article ID ACTIVE ANTIRETROVIRAL THERAPY; RANDOMIZED CONTROLLED-TRIALS; HUMAN-IMMUNODEFICIENCY-VIRUS; D INSUFFICIENCY; DISEASE PROGRESSION; AFRICAN-AMERICANS; FREE TESTOSTERONE; POSITIVE PATIENTS; HIGH PREVALENCE; RISK-FACTORS AB Background. Low bone mineral density (BMD) is common among patients infected with human immunodeficiency virus (HIV) and present in higher rates in black subjects. This study assessed vitamin D levels in HIV cases versus noninfected matched controls to determine if deficiency was associated with BMD and HIV clinical outcomes. Methods. In total, 271 military beneficiaries with HIV underwent dual energy x-ray absorptiometry (DEXA) screening in 2001-2. Serum 25OH-vitamin D levels were determined using stored serum from the time of DEXA and 6-18 months prior. Two non-HIV-infected controls for each active duty case (n = 205) were matched on age, sex, race, zip code, and season using the Department of Defense Serum Repository (DoDSR). Vitamin D levels <20 ng/mL were considered deficient. HIV-related factors and clinical outcomes were assessed using data collected in the DoD HIV Natural History study. Results. In total, 165 of 205 (80.5%) active duty HIV cases had 2 matched controls available. HIV cases had greater odds of for vitamin D deficiency (VDD) compared with controls (demographics adjusted paired data odds ratio [OR], 1.46, 95% confidence interval [CI], .87-2.45), but this was not statistically significant. Blacks were disproportionately deficient (P < .001) but not relative to HIV status or BMD. Low BMD was associated with typical risk factors (low body mass index and exercise levels, alcohol use); given limited available data the relationship between tenofovir exposure and VDD or low BMD could not be determined. Analysis of HIV-specific factors and outcomes such as exposure to antiretrovirals, HIV progression, hospitalizations, and death revealed no significant associations with vitamin D levels. Conclusions. VDD was highly prevalent in black HIV-infected persons but did not explain the observed racial disparity in BMD. Vitamin D deficiency was not more common among HIV-infected persons, nor did it seem associated with HIV-related factors/clinical outcomes. C1 [Weintrob, Amy C.; Aronson, Naomi E.] Uniformed Serv Univ Hlth Sci, Dept Med, Bethesda, MD 20814 USA. [Sherwood, Jeffrey E.] William Beaumont Army Med Ctr, Dept Med, El Paso, TX 79920 USA. [Mesner, Octavio C.; Weintrob, Amy C.; Wilkins, Kenneth J.; Crum-Cianflone, Nancy F.] Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, Infect Dis Clin Res Program, Bethesda, MD 20814 USA. [Weintrob, Amy C.; Aronson, Naomi E.] Walter Reed Natl Mil Med Ctr, Dept Med, Bethesda, MD USA. [Hadigan, Colleen M.] NIAID, Immunoregulat Lab, Bethesda, MD 20892 USA. [Crum-Cianflone, Nancy F.] USN, San Diego Med Ctr, Infect Dis Clin, San Diego, CA USA. RP Aronson, NE (reprint author), Uniformed Serv Univ Hlth Sci, Dept Med, Rm A3058,4301 Jones Bridge Rd, Bethesda, MD 20814 USA. EM naomi.aronson@usuhs.edu FU Infectious Disease Clinical Research Program (IDCRP), a Department of Defense program through the Uniformed Services University of the Health Sciences [IDCRP-000-03]; National Institute of Allergy and Infectious Diseases, National Institutes of Health [Y1-AI-5072] FX Support for this work (IDCRP-000-03) was provided by the Infectious Disease Clinical Research Program (IDCRP), a Department of Defense program executed through the Uniformed Services University of the Health Sciences. This project has been funded in whole, or in part, with federal funds from the National Institute of Allergy and Infectious Diseases, National Institutes of Health, under Inter-Agency Agreement Y1-AI-5072. NR 36 TC 8 Z9 8 U1 1 U2 10 PU OXFORD UNIV PRESS INC PI CARY PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD DEC 15 PY 2012 VL 55 IS 12 BP 1727 EP 1736 DI 10.1093/cid/cis785 PG 10 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA 044SF UT WOS:000311643000021 PM 22972869 ER PT J AU Li, Y Srimathi, IR Woodward, RH Pung, AJ Poutous, MK Shori, RK Johnson, EG AF Li, Yuan Srimathi, Indumathi Raghu Woodward, Ryan H. Pung, Aaron J. Poutous, Menelaos K. Shori, Ramesh K. Johnson, Eric G. TI Guided-Mode Resonance Filters for Wavelength Selection in Mid-Infrared Fiber Lasers SO IEEE PHOTONICS TECHNOLOGY LETTERS LA English DT Article DE Fiber lasers; fiber optics; micro-optics; optical filters ID MU-M AB A narrowband mid-infrared (mid-IR) guided-mode resonance filter (GMRF) is designed and fabricated using a Hafnium Dioxide film/quartz wafer material system. The fabricated GMRF is then integrated into an erbium (Er)-doped Zr-Ba-La-Al-Na (ZBLAN) fluoride glass fiber laser as a wavelength selective feedback element. The laser operated at 2782 nm with a line-width less than 2 nm demonstrates the viability of GMRFs for wavelength selection in the mid-IR. C1 [Li, Yuan; Srimathi, Indumathi Raghu; Woodward, Ryan H.; Pung, Aaron J.; Poutous, Menelaos K.; Johnson, Eric G.] Clemson Univ, Microphoton Lab, Holcombe Dept Elect & Comp Engn, Clemson, SC 29634 USA. [Shori, Ramesh K.] USN, Air Warfare Ctr, China Lake, CA 93555 USA. RP Li, Y (reprint author), Clemson Univ, Microphoton Lab, Holcombe Dept Elect & Comp Engn, Clemson, SC 29634 USA. EM yli6@clemson.edu; iraghu@clemson.edu; rwoodwa@clemson.edu; apung@clemson.edu; mpoutou@clemson.edu; rshori@ee.ucla.edu; ejohns8@clemson.edu FU HEL-JTO/AFOSR MRI-"3D Meta-Optics for High Energy Lasers" [FA9550-10-1-0543] FX This work was supported by HEL-JTO/AFOSR MRI-"3D Meta-Optics for High Energy Lasers" FA9550-10-1-0543. NR 19 TC 3 Z9 3 U1 2 U2 21 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1041-1135 J9 IEEE PHOTONIC TECH L JI IEEE Photonics Technol. Lett. PD DEC 15 PY 2012 VL 24 IS 24 BP 2300 EP 2302 DI 10.1109/LPT.2012.2227305 PG 3 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA 049ZT UT WOS:000312022900006 ER PT J AU Stenger-Smith, JD Lai, WW Irvin, DJ Yandek, GR Irvin, JA AF Stenger-Smith, John D. Lai, William W. Irvin, David J. Yandek, Gregory R. Irvin, Jennifer A. TI Electroactive polymer-based electrochemical capacitors using poly(benzimidazo-benzophenanthroline) and its pyridine derivative poly(4-aza-benzimidazo-benzophenanthroline) as cathode materials with ionic liquid electrolyte SO JOURNAL OF POWER SOURCES LA English DT Article DE Electrochemical capacitor; Poly(4-aza-benzimidazo-benzophenanthroline); Ionic liquid; Energy density ID LADDER POLYMER; CONDUCTING POLYMERS; CONJUGATED POLYMERS; P-TYPE AB A novel processing technique was used to solution cast films of poly(benzimidazo benzophenanthroline), (BBL), and the novel ladder polymer poly(4-aza-benzimidazo benzophenanthroline) (Py-BBL), which were used as cathode materials in Type IV electroactive polymer-based electrochemical capacitors (EPECs). This new processing technique involves co-casting the polymer from solution with a room temperature ionic liquid, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIBTI). The new processing technique gave polymer films with superior transport properties and electrochemical stabilities, did not require a break-in period, and yielded higher charge capacity than the standard films. Co-cast films of BBL and Py-BBL were each incorporated into separate Type IV EPECs using poly(3,4-propylene dioxythiophene) (PProDOT) as the anode material. It was found that the PProDOT/BBL capacitors store, on average, about 50% more energy than a comparable PProDOT/Py-BBL EPEC. While PProDOT/BBL films have an energy density advantage at rates (power densities) less than 0.01 kW kg(-1), PProDOT/Py-BBL EPECs are capable of delivering higher energy than the BBL EPECs at rates greater than 0.01 kW kg(-1) (550 s per cycle). In fact, PProDOT/Py-BBL devices delivered more than ten times the energy density of PProDOT/BBL devices at 0.5 kW kg(-1) (50 s per cycle). The PProDOT/Py-BBL EPECs were cycled for 10,000 cycles at 65% depth of discharge and maintained 96% of the initial energy and power density, whereas the PProDOT/BBL EPECs were cycled under the same conditions and lost more than 35% of the initial energy and power density after only 2300 cycles. Published by Elsevier B.V. C1 [Stenger-Smith, John D.; Lai, William W.] USN, Air Warfare Ctr, Weap Div, Res & Intelligence Dept, China Lake, CA 93555 USA. [Stenger-Smith, John D.; Lai, William W.] NAWCWD, Div Chem, Res Dept, China Lake, CA 93555 USA. [Irvin, David J.] Syst & Mat Res Corp, Austin, TX 78756 USA. [Yandek, Gregory R.] USAF, Prop Mat Applicat Branch, Res Lab, Prop Directorate AFRL RZSM, Edwards AFB, CA 93524 USA. [Irvin, Jennifer A.] Texas State Univ, Dept Chem & Biochem, San Marcos, TX 78666 USA. RP Stenger-Smith, JD (reprint author), USN, Air Warfare Ctr, Weap Div, Res & Intelligence Dept, China Lake, CA 93555 USA. EM John.Stenger-Smith@navy.mil RI Irvin, Jennifer/C-7968-2013 OI Irvin, Jennifer/0000-0003-3500-8419 FU Office of Naval Research; China Lake ILIR Program FX The authors thank the Office of Naval Research (Drs. M. Anderson and P. Armistead) and the China Lake ILIR Program for the financial support of this project. The authors also thank the reviewers of our original manuscript for their suggestions and Paul Goodman for editing the revised manuscript. NR 18 TC 10 Z9 10 U1 3 U2 49 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD DEC 15 PY 2012 VL 220 BP 236 EP 242 DI 10.1016/j.jpowsour.2012.07.068 PG 7 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 022UW UT WOS:000309990300034 ER PT J AU Shafik, CF Mohareb, EW Yassin, AS Amin, MA El Kholy, A El-Karaksy, H Youssef, FG AF Shafik, Caroline F. Mohareb, Emad W. Yassin, Aymen S. Amin, Madgy A. El Kholy, Amani El-Karaksy, Hanaa Youssef, Fouad G. TI Viral etiologies of lower respiratory tract infections among Egyptian children under five years of age SO BMC INFECTIOUS DISEASES LA English DT Article DE Egypt; Direct fluorescence assay; Lower respiratory tract infections; Pediatric; Polymerase chain reaction; Respiratory viruses; Shell vial culture ID COMMUNITY-ACQUIRED PNEUMONIA; POLYMERASE-CHAIN-REACTION; SYNCYTIAL VIRUS; HOSPITALIZED CHILDREN; HUMAN METAPNEUMOVIRUS; YOUNG-CHILDREN; INFANTS; ILLNESS; PATHOGENS; DISEASE AB Background: Lower respiratory tract infections (LRTI) are responsible for a considerable number of deaths among children, particularly in developing countries. In Egypt and the Middle East region, there is a lack of data regarding the viral causes of LRTI. In this study, we aimed to identify the relative prevalence of various respiratory viruses that contribute to LRTIs in young children. Although, nucleic acid-based methods have gained importance as a sensitive tool to determine the viral infections, their use is limited because of their prohibitive cost in low-income countries. Therefore, we applied three different laboratory methods, and presented the different virus prevalence patterns detected by each method. Methods: We collected nasopharyngeal aspirate samples, demographic data and, clinical data from 450 children under five years of age who presented with LRTI at Abou El Reesh hospital in Cairo during a one-year period. To identify the viral causes of the LRTI we used direct fluorescence assay, real-time reverse-transcriptase polymerase chain reaction (rt-RT-PCR), and shell vial culture. We tested for eight major respiratory viruses. Results: Two hundred sixty-nine patients (59.9%) had a viral infection, among which 10.8% had a co-infection with two or more viruses. By all three methods, respiratory syncytial virus (RSV) was the most predominant, and parainfluenza virus type 2 (HPIV-2), influenza B virus (FLUBV) were the least predominant. Other viral prevalence patterns differed according to the detection method used. The distribution of various viruses among different age groups and seasonal distribution of the viruses were also determined. Conclusions: RSV and human adenovirus were the most common respiratory viruses detected by rt-RT-PCR. Co-infections were found to be frequent among children and the vast majority of co-infections were detected by nucleic acid-based detection assays. C1 [Shafik, Caroline F.; Mohareb, Emad W.; Youssef, Fouad G.] USN, Med Res Unit 3, Cairo 11517, Egypt. [Yassin, Aymen S.; Amin, Madgy A.] Cairo Univ, Dept Microbiol & Immunol, Fac Pharm, Cairo, Egypt. [El Kholy, Amani] Cairo Univ, Dept Clin Pathol, Fac Med, Cairo, Egypt. [El-Karaksy, Hanaa] Cairo Univ, Dept Pediat, Fac Med, Giza, Egypt. RP Shafik, CF (reprint author), USN, Med Res Unit 3, Cairo 11517, Egypt. EM caroline.fayez.eg@med.navy.mil RI Valle, Ruben/A-7512-2013; Yassin, Aymen/N-8490-2016 OI Yassin, Aymen/0000-0002-4423-164X FU United States Department of Defense Global Emerging Infections Systems Surveillance and Response (AFHSC-GEIS) Program [847705.82000.25 GB.E0018] FX The views expressed in this article are those of the author and do not necessarily reflect the official policy or position of the Department of the Navy, Department of Defense, or the U.S. Government. This study was funded by the United States Department of Defense Global Emerging Infections Systems Surveillance and Response (AFHSC-GEIS) Program, work unit # 847705.82000.25 GB.E0018. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. The study protocol # NAMRU3.2006.0010 was approved by the Naval Medical Research Unit No. 3 Institutional Review Board in compliance with all applicable Federal regulations governing the protection of human subjects. Some of the authors are employees of the U.S. Government. This work was prepared as part of their official duties. NR 38 TC 20 Z9 22 U1 0 U2 12 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1471-2334 J9 BMC INFECT DIS JI BMC Infect. Dis. PD DEC 13 PY 2012 VL 12 AR 350 DI 10.1186/1471-2334-12-350 PG 8 WC Infectious Diseases SC Infectious Diseases GA 063ZE UT WOS:000313039900001 PM 23237512 ER PT J AU Richman, JG Arbic, BK Shriver, JF Metzger, EJ Wallcraft, AJ AF Richman, James G. Arbic, Brian K. Shriver, Jay F. Metzger, E. Joseph Wallcraft, Alan J. TI Inferring dynamics from the wavenumber spectra of an eddying global ocean model with embedded tides SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID INTERNAL TIDES; SURFACE MANIFESTATION; GENERAL-CIRCULATION; SATELLITE ALTIMETRY; DEEP-OCEAN; DISSIPATION; VARIABILITY; SIMULATION; TURBULENCE; ACCURACY AB The slopes of the wavenumber spectra of sea surface height (SSH) and kinetic energy (KE) have been used to infer "interior" or surface quasi-geostrophic (QG or SQG) dynamics of the ocean. However, inspection of spectral slopes for altimeter SSH in the mesoscale band of 70 to 250 km shows much flatter slopes than the QG or SQG predictions over most of the ocean. Comparison of altimeter wavenumber spectra with spectra from an eddy resolving global ocean circulation model (the HYbrid Coordinate Ocean Model, HYCOM, at 1/12.5 degrees equatorial resolution), which has embedded tides, suggests that the flatter slopes of the altimeter SSH may arise from three possible sources: (1) presence of strong internal tides, (2) shift of the inertial sub-range to smaller scales and (3) altimeter noise. Artificially adding noise to the model tends to flatten the spectra for low KE regions. Near internal tide generating regions, spectral slopes in the presence of internal waves are much flatter than QG or SQG predictions. Separating the variability into high and low frequency (around periods of 2 days), then a different pattern emerges with a flat high-frequency wavenumber spectrum and a steeper low-frequency wavenumber spectrum. For low mesoscale KE, the inertial sub-range, defined by the nearly flat enstrophy band, moves to smaller scales and the mesoscale band of 70 to 250 km no longer represents the inertial sub-range. The model wavenumber spectra are consistent with QG and SQG theory when internal waves and inertial sub-range shifts are taken into consideration. Citation: Richman, J. G., B. K. Arbic, J. F. Shriver, E. J. Metzger, and A. J. Wallcraft (2012), Inferring dynamics from the wavenumber spectra of an eddying global ocean model with embedded tides, J. Geophys. Res., 117, C12012, doi:10.1029/2012JC008364. C1 [Richman, James G.; Shriver, Jay F.; Metzger, E. Joseph; Wallcraft, Alan J.] USN, Div Oceanog, Res Lab, Stennis Space Ctr, MS 39529 USA. [Arbic, Brian K.] Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA. RP Richman, JG (reprint author), USN, Div Oceanog, Res Lab, Code 7323, Stennis Space Ctr, MS 39529 USA. EM james.richman@nrlssc.navy.mil OI Arbic, Brian K/0000-0002-7969-2294 FU Naval Research Laboratory [N000173-06-C002]; Office of Naval Research [N00014-11-1-0487, 0602435N] FX We thank Rosemary Morrow and Ernesto Rodriguez for suggesting the calculation of wavenumber spectra in our concurrent HYCOM wind-plus-tides simulations. BKA acknowledges funding provided by Naval Research Laboratory contract N000173-06-C002 and Office of Naval Research grant N00014-11-1-0487. JGR, JFS, EJM, and AJW were supported by the projects "Eddy resolving global ocean prediction including tides" and "Ageostrophic vorticity dynamics" sponsored by the Office of Naval Research under program element 0602435N. This work was supported in part by a grant of computer time from the DOD High Performance Computing Modernization Program at the Navy DSRC. This is NRL contribution NRL/JA/7320-12-1280 and has been approved for public release. NR 36 TC 23 Z9 23 U1 2 U2 20 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD DEC 12 PY 2012 VL 117 AR C12012 DI 10.1029/2012JC008364 PG 11 WC Oceanography SC Oceanography GA 055DY UT WOS:000312396600005 ER PT J AU Agakishiev, G Aggarwal, MM Ahammed, Z Alakhverdyants, AV Alekseev, I Alford, J Anderson, BD Anson, CD Arkhipkin, D Averichev, GS Balewski, J Beavis, DR Behera, NK Bellwied, R Betancourt, MJ Betts, RR Bhasin, A Bhati, AK Bichsel, H Bielcik, J Bielcikova, J Bland, LC Bordyuzhin, IG Borowski, W Bouchet, J Braidot, E Brandin, AV Brovko, SG Bruna, E Bueltmann, S Bunzarov, I Burton, TP Cai, XZ Caines, H Sanchez, MCD Cebra, D Cendejas, R Cervantes, MC Chaloupka, P Chattopadhyay, S Chen, HF Chen, JH Chen, JY Chen, L Cheng, J Cherney, M Chikanian, A Christie, W Chung, P Codrington, MJM Corliss, R Cramer, JG Crawford, HJ Cui, X Daugherity, MS Leyva, AD De Silva, LC Debbe, RR Dedovich, TG Deng, J Derevschikov, AA de Souza, RD Didenko, L Djawotho, P Dong, X Drachenberg, JL Draper, JE Du, CM Dunlop, JC Efimov, LG Elnimr, M Engelage, J Eppley, G Estienne, M Eun, L Evdokimov, O Fatemi, R Fedorisin, J Fersch, RG Filip, P Finch, E Fine, V Fisyak, Y Gagliardi, CA Gangadharan, DR Geurts, F Ghosh, P Gorbunov, YN Gordon, A Grebenyuk, OG Grosnick, D Gupta, A Gupta, S Haag, B Hajkova, O Hamed, A Han, LX Hays-Wehle, JP Heppelmann, S Hirsch, A Hoffmann, GW Hofman, DJ Huang, B Huang, HZ Humanic, TJ Huo, L Igo, G Jacobs, WW Jena, C Joseph, J Judd, EG Kabana, S Kang, K Kapitan, J Kauder, K Ke, HW Keane, D Kechechyan, A Kettler, D Kikola, DP Kiryluk, J Kisiel, A Kizka, V Klein, SR Koetke, DD Kollegger, T Konzer, J Koralt, I Koroleva, L Korsch, W Kotchenda, L Kravtsov, P Krueger, K Kumar, L Lamont, MAC Landgraf, JM LaPointe, S Lauret, J Lebedev, A Lednicky, R Lee, JH Leight, W LeVine, MJ Li, C Li, L Li, W Li, X Li, X Li, Y Li, ZM Lima, LM Lisa, MA Liu, F Ljubicic, T Llope, WJ Longacre, RS Lu, Y Lukashov, EV Luo, X Ma, GL Ma, YG Mahapatra, DP Majka, R Mall, OI Manweiler, R Margetis, S Markert, C Masui, H Matis, HS McDonald, D McShane, TS Meschanin, A Milner, R Minaev, NG Mioduszewski, S Mitrovski, MK Mohammed, Y Mohanty, B Mondal, MM Morozov, B Morozov, DA Munhoz, MG Mustafa, MK Naglis, M Nandi, BK Nayak, TK Nogach, LV Nurushev, SB Odyniec, G Ogawa, A Oh, K Ohlson, A Okorokov, V Oldag, EW Oliveira, RAN Olson, D Pachr, M Page, BS Pal, SK Pandit, Y Panebratsev, Y Pawlak, T Pei, H Peitzmann, T Perkins, C Peryt, W Pile, P Planinic, M Pluta, J Plyku, D Poljak, N Porter, J Powell, CB Prindle, D Pruneau, C Pruthi, NK Pujahari, PR Putschke, J Qiu, H Raniwala, R Raniwala, S Ray, RL Redwine, R Reed, R Ritter, HG Roberts, JB Rogachevskiy, OV Romero, JL Ruan, L Rusnak, J Sahoo, NR Sakrejda, I Salur, S Sandweiss, J Sangaline, E Sarkar, A Schambach, J Scharenberg, RP Schaub, J Schmah, AM Schmitz, N Schuster, TR Seele, J Seger, J Selyuzhenkov, I Seyboth, P Shah, N Shahaliev, E Shao, M Sharma, M Shi, SS Shou, QY Sichtermann, EP Simon, F Singaraju, RN Skoby, MJ Smirnov, N Solanki, D Sorensen, P deSouza, UG Spinka, HM Srivastava, B Stanislaus, TDS Steadman, SG Stevens, JR Stock, R Strikhanov, M Stringfellow, B Suaide, AAP Suarez, MC Sumbera, M Sun, XM Sun, Y Sun, Z Surrow, B Svirida, DN Symons, TJM de Toledo, AS Takahashi, J Tang, AH Tang, Z Tarini, LH Tarnowsky, T Thein, D Thomas, JH Tian, J Timmins, AR Tlusty, D Tokarev, M Trainor, TA Trentalange, S Tribble, RE Tribedy, P Trzeciak, BA Tsai, OD Ullrich, T Underwood, DG Van Buren, G van Nieuwenhuizen, G Vanfossen, JA Varma, R Vasconcelos, GMS Vasiliev, AN Videbaek, F Viyogi, YP Vokal, S Wada, M Walker, M Wang, F Wang, G Wang, H Wang, JS Wang, Q Wang, XL Wang, Y Webb, G Webb, JC Westfall, GD Whitten, C Wieman, H Wissink, SW Witt, R Witzke, W Wu, YF Xiao, Z Xie, W Xu, H Xu, N Xu, QH Xu, W Xu, Y Xu, Z Xue, L Yang, Y Yang, Y Yepes, P Yip, K Yoo, IK Zawisza, M Zbroszczyk, H Zhan, W Zhang, JB Zhang, S Zhang, WM Zhang, XP Zhang, Y Zhang, ZP Zhao, F Zhao, J Zhong, C Zhu, X Zhu, YH Zoulkarneeva, Y AF Agakishiev, G. Aggarwal, M. M. Ahammed, Z. Alakhverdyants, A. V. Alekseev, I. Alford, J. Anderson, B. D. Anson, C. D. Arkhipkin, D. Averichev, G. S. Balewski, J. Beavis, D. R. Behera, N. K. Bellwied, R. Betancourt, M. J. Betts, R. R. Bhasin, A. Bhati, A. K. Bichsel, H. Bielcik, J. Bielcikova, J. Bland, L. C. Bordyuzhin, I. G. Borowski, W. Bouchet, J. Braidot, E. Brandin, A. V. Brovko, S. G. Bruna, E. Bueltmann, S. Bunzarov, I. Burton, T. P. Cai, X. Z. Caines, H. Sanchez, M. Calderon de la Barca Cebra, D. Cendejas, R. Cervantes, M. C. Chaloupka, P. Chattopadhyay, S. Chen, H. F. Chen, J. H. Chen, J. Y. Chen, L. Cheng, J. Cherney, M. Chikanian, A. Christie, W. Chung, P. Codrington, M. J. M. Corliss, R. Cramer, J. G. Crawford, H. J. Cui, X. Daugherity, M. S. Leyva, A. Davila De Silva, L. C. Debbe, R. R. Dedovich, T. G. Deng, J. Derevschikov, A. A. Derradi de Souza, R. Didenko, L. Djawotho, P. Dong, X. Drachenberg, J. L. Draper, J. E. Du, C. M. Dunlop, J. C. Efimov, L. G. Elnimr, M. Engelage, J. Eppley, G. Estienne, M. Eun, L. Evdokimov, O. Fatemi, R. Fedorisin, J. Fersch, R. G. Filip, P. Finch, E. Fine, V. Fisyak, Y. Gagliardi, C. A. Gangadharan, D. R. Geurts, F. Ghosh, P. Gorbunov, Y. N. Gordon, A. Grebenyuk, O. G. Grosnick, D. Gupta, A. Gupta, S. Haag, B. Hajkova, O. Hamed, A. Han, L. -X. Hays-Wehle, J. P. Heppelmann, S. Hirsch, A. Hoffmann, G. W. Hofman, D. J. Huang, B. Huang, H. Z. Humanic, T. J. Huo, L. Igo, G. Jacobs, W. W. Jena, C. Joseph, J. Judd, E. G. Kabana, S. Kang, K. Kapitan, J. Kauder, K. Ke, H. W. Keane, D. Kechechyan, A. Kettler, D. Kikola, D. P. Kiryluk, J. Kisiel, A. Kizka, V. Klein, S. R. Koetke, D. D. Kollegger, T. Konzer, J. Koralt, I. Koroleva, L. Korsch, W. Kotchenda, L. Kravtsov, P. Krueger, K. Kumar, L. Lamont, M. A. C. Landgraf, J. M. LaPointe, S. Lauret, J. Lebedev, A. Lednicky, R. Lee, J. H. Leight, W. LeVine, M. J. Li, C. Li, L. Li, W. Li, X. Li, X. Li, Y. Li, Z. M. Lima, L. M. Lisa, M. A. Liu, F. Ljubicic, T. Llope, W. J. Longacre, R. S. Lu, Y. 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CA STAR Collaboration TI Anomalous centrality evolution of two-particle angular correlations from Au-Au collisions at root s(NN)=62 and 200 GeV SO PHYSICAL REVIEW C LA English DT Article ID QUARK-GLUON PLASMA; HEAVY-ION COLLISIONS; NUCLEUS-NUCLEUS COLLISIONS; TRANSVERSE-MOMENTUM; CROSS-SECTIONS; PERFECT LIQUID; QCD MATTER; ENERGY; MODEL; THERMALIZATION AB We present two-dimensional (2D) two-particle angular correlations measured with the STAR detector on relative pseudorapidity eta and azimuth phi for charged particles from Au-Au collisions at root s(NN) = 62 and 200 GeV with transverse momentum p(t) >= 0.15 GeV/c, vertical bar eta vertical bar <= 1, and 2 pi in azimuth. Observed correlations include a same-side (relative azimuth lambda), intermediate (3-6k), roughness (1-3k) and small (