FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Gutteridge, CE Major, JW Nin, DA Curtis, SM Bhattacharjee, AK Gerena, L Nichols, DA AF Gutteridge, Clare E. Major, Joshua W. Nin, Daniel A. Curtis, Sean M. Bhattacharjee, Apurba K. Gerena, Lucia Nichols, Daniel A. TI In vitro efficacy of 2,N-bisarylated 2-ethoxyacetamides against Plasmodium falciparum SO BIOORGANIC & MEDICINAL CHEMISTRY LETTERS LA English DT Article DE Chalcone; 2-Ethoxyacetamide; Malaria; Plasmodium falciparum; 1,3-Diphenyl-2-propen-1-ones ID VIVO EFFICACY; CHALCONES; LICOCHALCONE; DERIVATIVES; METABOLISM; AGENT; ACIDS AB Investigation of a series of 2, N-bisarylated 2-ethoxyacetamides resulted in the identification of four inhibitors 5, 20, 24, 29 with single-digit micromolar in vitro efficacy against two drug-resistant Plasmodium falciparum strains. These compounds are analogs of structurally-related 1,3-bisaryl-2-propen-1-ones (chalcones), the latter showing efficacy in vitro but not in a malaria-infected mouse. The 2, N-bisarylated 2-ethoxyacetamides (e.g., 2, 5, 20) were shown to possess significantly greater stability in the presence of metabolizing enzymes than the corresponding 1,3-bisaryl-2-propen-1-ones (e.g., 1, 3, 18). Published by Elsevier Ltd. C1 [Gutteridge, Clare E.; Major, Joshua W.; Nin, Daniel A.; Curtis, Sean M.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA. [Bhattacharjee, Apurba K.; Gerena, Lucia; Nichols, Daniel A.] Walter Reed Army Inst Res, Div Expt Therapeut, Silver Spring, MD 20910 USA. RP Gutteridge, CE (reprint author), US Naval Acad, Dept Chem, Annapolis, MD 21402 USA. EM gutterid@usna.edu FU Cottrell College Science Award from The Research Corporation for Science Advancement; Military Infectious Diseases Research Program; Office of Naval Research; Naval Academy Research Council of the United States Naval Academy FX We are grateful for support of this work by a Cottrell College Science Award from The Research Corporation for Science Advancement, by the Military Infectious Diseases Research Program, by the Office of Naval Research, and by the Naval Academy Research Council of the United States Naval Academy. The opinions or assertions contained herein are the private views of the authors and are not to be construed as official, or reflecting true views of the Department of Defense, the Department of the Army or the Department of the Navy. NR 23 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0960-894X EI 1464-3405 J9 BIOORG MED CHEM LETT JI Bioorg. Med. Chem. Lett. PD FEB 1 PY 2016 VL 26 IS 3 BP 1048 EP 1051 DI 10.1016/j.bmcl.2015.12.032 PG 4 WC Chemistry, Medicinal; Chemistry, Organic SC Pharmacology & Pharmacy; Chemistry GA DB8WJ UT WOS:000368797600070 PM 26750257 ER PT J AU Zhuang, X Yang, MT Sing, MLC Dolabdjian, C Finkel, P Li, JF Viehland, D AF Zhuang, Xin Yang, May-Tia Sing, Marc Lam Chok Dolabdjian, Christophe Finkel, Peter Li, Jiefang Viehland, Dwight TI Tunable Magnetoelectric Bending Resonance for Sensing Static Magnetic Fields SO IEEE SENSORS JOURNAL LA English DT Article DE Magnetoelectric effect; equivalent circuit modeling; magnetic field measurement ID MAGNETOSTRICTIVE/PIEZOELECTRIC LAMINATE COMPOSITE; 1/F NOISE; STRAIN AB Bilayered magnetostrictive-piezoelectric composites exhibit a resonant enhancement of magnetoelectric coupling when operated under bending mode. Such composites are of importance for achieving ultrasensitive magnetometers for quasi-static magnetic fields detection by measuring the parameter variations near the resonant frequency. The detection performance is limited by diverse noise processes appearing in the composite and associated electronics, such as extrinsic interferences due to environmental vibrations and temperature variations and also loss noise related to energy dissipations in the composite. The noise source, in bending mode, is due to thermomechanical dissipations. In this paper, the field detection performance relating to this noise in a doubly clamped magnetoelectric composite is investigated by means of modulation techniques. C1 [Zhuang, Xin; Yang, May-Tia; Sing, Marc Lam Chok; Dolabdjian, Christophe] Univ Caen, CNRS, Grp Rech Informat Image Automat & Instrumentat, F-14032 Caen, France. [Finkel, Peter] US Navy, Res Lab, Washington, DC 20375 USA. [Li, Jiefang; Viehland, Dwight] Virginia Tech, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA. RP Zhuang, X; Yang, MT; Sing, MLC; Dolabdjian, C (reprint author), Univ Caen, CNRS, Grp Rech Informat Image Automat & Instrumentat, F-14032 Caen, France.; Finkel, P (reprint author), US Navy, Res Lab, Washington, DC 20375 USA.; Li, JF; Viehland, D (reprint author), Virginia Tech, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA. EM xin.zhuang@unicaen.fr; may-tia.yang@ensicaen.fr; mlam@ensicaen.fr; christophe.dolabdjian@unicaen.fr; peter.finkel@navy.mil; jiefang@mse.vt.edu; viehland@mse.vt.edu FU Office of Naval Research Global; La Region Basse-Normandie, France FX This work was supported in part by the Office of Naval Research Global and in part by La Region Basse-Normandie, France. NR 36 TC 1 Z9 1 U1 8 U2 31 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1530-437X EI 1558-1748 J9 IEEE SENS J JI IEEE Sens. J. PD FEB PY 2016 VL 16 IS 3 BP 662 EP 669 DI 10.1109/JSEN.2015.2490581 PG 8 WC Engineering, Electrical & Electronic; Instruments & Instrumentation; Physics, Applied SC Engineering; Instruments & Instrumentation; Physics GA DC2VU UT WOS:000369077200012 ER PT J AU Hu, Y Menyuk, CR Hutchinson, MN Urick, VJ Williams, KJ AF Hu, Yue Menyuk, Curtis R. Hutchinson, Meredith N. Urick, Vincent J. Williams, Keith J. TI Impact of the Coulomb interaction on the Franz-Keldysh effect in high-current photodetectors SO OPTICS LETTERS LA English DT Article ID OPTICAL-ABSORPTION; FIELD AB The Franz-Keldysh effect has been recognized as the largest contributor to oscillations in the responsivity of high-current photodetectors as a function of the applied bias or the incident light wavelength and to device nonlinearity. Prior work only considered the effect of the electric field without considering the Coulomb interaction. We show that it is not possible to obtain agreement with experiments at all optical wavelengths without including this effect in the effective mass equation. We find the maxima and minima in the absorption of the applied electric field shift when the Coulomb interaction is included. We then use the calculated absorption with the drift-diffusion equations to calculate the responsivity in a partially depleted absorber (PDA) photodetector, and we obtain excellent agreement with experiments at all biases and optical wavelengths. (C) 2016 Optical Society of America C1 [Hu, Yue; Menyuk, Curtis R.] Univ Maryland Baltimore Cty, 1000 Hilltop Circle, Baltimore, MD 21250 USA. [Hutchinson, Meredith N.; 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, 1000 Hilltop Circle, Baltimore, MD 21250 USA. EM yuehu1@umbc.edu FU Naval Reseach Laboratory [N00173-09-2-C016, N00173-15-1-G905] FX Naval Reseach Laboratory (N00173-09-2-C016, N00173-15-1-G905). NR 23 TC 0 Z9 0 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0146-9592 EI 1539-4794 J9 OPT LETT JI Opt. Lett. PD FEB 1 PY 2016 VL 41 IS 3 BP 456 EP 459 DI 10.1364/OL.41.000456 PG 4 WC Optics SC Optics GA DC2MQ UT WOS:000369051200006 PM 26907396 ER PT J AU Gnandt, RJ Smith, JL Nguyen-Ta, K McDonald, L LeClere, LE AF Gnandt, Ryan J. Smith, Jennifer L. Nguyen-Ta, Kim McDonald, Lucas LeClere, Lance E. TI High-Tensile Strength Tape Versus High-Tensile Strength Suture: A Biomechanical Study SO ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY LA English DT Article ID PECTORALIS MAJOR MUSCLE; ACHILLES-TENDON REPAIRS; ROTATOR CUFF; BICEPS TENODESIS; RUPTURES; METAANALYSIS; INJURIES; MODEL AB Purpose: To determine which suture design, high-tensile strength tape or high-tensile strength suture, performed better at securing human tissue across 4 selected suture techniques commonly used in tendinous repair, by comparing the total load at failure measured during a fixed-rate longitudinal single load to failure using a biomechanical testing machine. Methods: Matched sets of tendon specimens with bony attachments were dissected from 15 human cadaveric lower extremities in a manner allowing for direct comparison testing. With the use of selected techniques (simple Mason-Allen in the patellar tendon specimens, whip stitch in the quadriceps tendon specimens, and Krackow stitch in the Achilles tendon specimens), 1 sample of each set was sutured with a 2-mm braided, nonabsorbable, high-tensile strength tape and the other with a No. 2 braided, nonabsorbable, high-tensile strength suture. A total of 120 specimens were tested. Each model was loaded to failure at a fixed longitudinal traction rate of 100 mm/min. The maximum load and failure method were recorded. Results: In the whip stitch and the Krackow-stitch models, the high-tensile strength tape had a significantly greater mean load at failure with a difference of 181 N (P = .001) and 94 N (P = .015) respectively. No significant difference was found in the Mason-Allen and simple stitch models. Pull-through remained the most common method of failure at an overall rate of 56.7% (suture = 55%; tape = 58.3%). Conclusions: In biomechanical testing during a single load to failure, high-tensile strength tape performs more favorably than high-tensile strength suture, with a greater mean load to failure, in both the whip-and Krackow-stitch models. Although suture pull-through remains the most common method of failure, high-tensile strength tape requires a significantly greater load to pull-through in a whip-stitch and Krakow-stitch model. C1 [Gnandt, Ryan J.; Smith, Jennifer L.; Nguyen-Ta, Kim; McDonald, Lucas; LeClere, Lance E.] Naval Med Ctr San Diego, Dana C Covey Orthopaed Biomech Lab, Dept Orthopaed Surg, San Diego, CA USA. RP LeClere, LE (reprint author), US Naval Acad, USN, Naval Hlth Clin Annapolis, 250 Wood Rd, Annapolis, MD 21402 USA. EM LeClere.Navy.Sports@gmail.com OI McDonald, Lucas/0000-0002-0191-7959; LeClere, Lance/0000-0002-4154-9900 NR 22 TC 3 Z9 3 U1 3 U2 6 PU W B SAUNDERS CO-ELSEVIER INC PI PHILADELPHIA PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA SN 0749-8063 EI 1526-3231 J9 ARTHROSCOPY JI Arthroscopy PD FEB PY 2016 VL 32 IS 2 BP 356 EP 363 DI 10.1016/j.arthro.2015.08.013 PG 8 WC Orthopedics; Surgery SC Orthopedics; Surgery GA DB5CJ UT WOS:000368531100026 PM 26483169 ER PT J AU Fluke, L Ward, W McEvoy, C Earley, A Oxner, CR AF Fluke, L. Ward, W. McEvoy, C. Earley, A. Oxner, C. R. TI Survival Risk in Breast Cancer Related to Delays in Surgical Care SO ANNALS OF SURGICAL ONCOLOGY LA English DT Meeting Abstract CT 69th Annual Cancer Symposium of the Society-of-Surgical-Oncology CY MAR 02-05, 2016 CL Boston, MA SP Soc Surg Oncol C1 [Fluke, L.; Ward, W.; McEvoy, C.; Earley, A.; Oxner, C. R.] Naval Med Ctr Portsmouth, Gen Surg, Portsmouth, VA USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1068-9265 EI 1534-4681 J9 ANN SURG ONCOL JI Ann. Surg. Oncol. PD FEB PY 2016 VL 23 SU 1 MA P74 BP S70 EP S70 PG 1 WC Oncology; Surgery SC Oncology; Surgery GA DB0FW UT WOS:000368185000178 ER PT J AU Nita, R Trammell, SA Ellis, GA Moore, MH Soto, CM Leary, DH Fontana, J Talebzadeh, SF Knight, DA AF Nita, Rafaela Trammell, Scott A. Ellis, Gregory A. Moore, Martin H. Soto, Carissa M. Leary, Dagmar H. Fontana, Jake Talebzadeh, Somayeh F. Knight, D. Andrew TI Kinetic analysis of the hydrolysis of methyl parathion using citrate-stabilized 10 nm gold nanoparticles SO CHEMOSPHERE LA English DT Article DE Methyl parathion; Degradation; Gold nanoparticles; Catalysis AB "Ligand-free" citrate-stabilized 10 nm gold nanoparticles (AuNPs) promote the hydrolysis of the thiophosphate ester methyl parathion (MeP) on the surface of gold as a function of pH and two temperature values. At 50 degrees C, the active surface gold atoms show catalytic turnover w similar to 4 times after 8 h and little turnover of gold surface atoms at 25 degrees C with only 40% of the total atoms being active. From Michaelis-Menten analysis, k(cat) increases between pH 8 and 9 and decreases above pH 9. A global analysis of the spectral changes confirmed the stoichiometric reaction at 25 degrees C and the catalytic reaction at 50 degrees C and mass spectrometry confirmed the identity of p-nitrophenolate (PNP) product. Additional decomposition pathways involving oxidation and hydrolysis independent of the formation of PNP were also seen at 50 degrees C for both catalyzed and un-catalyzed reactions. This work represents the first kinetic analysis of ligand-free AuNP catalyzed hydrolysis of a thiophosphate ester. (C) 2015 Elsevier Ltd. All rights reserved. C1 [Nita, Rafaela; Talebzadeh, Somayeh F.; Knight, D. Andrew] Florida Inst Technol, Dept Chem, Melbourne, FL 32901 USA. [Trammell, Scott A.; Moore, Martin H.; Soto, Carissa M.; Leary, Dagmar H.; Fontana, Jake] Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. [Ellis, Gregory A.] Naval Res Lab, Postdoctoral Res Associate, Natl Res Council, Natl Acad Sci, Washington, DC 20375 USA. RP Knight, DA (reprint author), Florida Inst Technol, Dept Chem, 150 West Univ Blvd, Melbourne, FL 32901 USA. EM aknight@fit.edu FU Defense Threat Reduction Agency-joint Science and Technology Office for Chemical and Biological Defense (MIPR) [B102405M, B112542M, HDTRA136555]; American Society of Engineering Education; Office of Naval Research FX This work received support from the Defense Threat Reduction Agency-joint Science and Technology Office for Chemical and Biological Defense (MIPR #B102405M, B112542M and HDTRA136555. D.A.K is grateful to the American Society of Engineering Education and Office of Naval Research for a Distinguished Faculty Fellowship. NR 8 TC 1 Z9 1 U1 15 U2 29 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0045-6535 EI 1879-1298 J9 CHEMOSPHERE JI Chemosphere PD FEB PY 2016 VL 144 BP 1916 EP 1919 DI 10.1016/j.chemosphere.2015.10.036 PG 4 WC Environmental Sciences SC Environmental Sciences & Ecology GA DA4MQ UT WOS:000367774400242 PM 26547026 ER PT J AU Judd, KP Savelyev, I Zhang, Q Handler, RA AF Judd, K. Peter Savelyev, Ivan Zhang, Qi Handler, Robert A. TI The thermal signature of a submerged jet impacting normal to a free surface SO JOURNAL OF VISUALIZATION LA English DT Article ID AIR-WATER-INTERFACE; SUBJECT C1 [Judd, K. Peter; Savelyev, Ivan] Naval Res Lab, Washington, DC 20375 USA. [Zhang, Qi; Handler, Robert A.] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA. RP Judd, KP (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM kjudd@ccs.nrl.navy.mil FU Naval Research Laboratory FX The first two authors would like to acknowledge the support of the Naval Research Laboratory. NR 18 TC 0 Z9 0 U1 4 U2 6 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1343-8875 EI 1875-8975 J9 J VISUAL-JAPAN JI J. Vis. PD FEB PY 2016 VL 19 IS 1 BP 1 EP 5 DI 10.1007/s12650-015-0303-0 PG 5 WC Computer Science, Interdisciplinary Applications; Imaging Science & Photographic Technology SC Computer Science; Imaging Science & Photographic Technology GA DA9ZH UT WOS:000368167800001 ER PT J AU Chun, C Neta, B AF Chun, Changbum Neta, Beny TI Comparison of several families of optimal eighth order methods SO APPLIED MATHEMATICS AND COMPUTATION LA English DT Article DE Iterative methods; Order of convergence; Basin of attraction; Extraneous fixed points ID SOLVING NONLINEAR EQUATIONS; FIND MULTIPLE ROOTS; ITERATIVE METHODS; 4TH-ORDER FAMILY; ATTRACTION; BASINS; CONVERGENCE; DYNAMICS AB Several families of optimal eighth order methods to find simple roots are compared to the best known eighth order method due to Wang and Liu (2010). We have tried to improve their performance by choosing the free parameters of each family using two different criteria. Published by Elsevier Inc. C1 [Chun, Changbum] Sungkyunkwan Univ, Dept Math, Suwon 16419, South Korea. [Neta, Beny] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Neta, B (reprint author), Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. EM cbchun@skku.edu; bneta@nps.edu FU Basic Science Research Program through the National Research Foundation of Korea(NRF) - Ministry of Education [NRF-2013R1A1A2005012] FX This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education (NRF-2013R1A1A2005012). The first author thanks the Applied Mathematics Departmentat the Naval Postgraduate School for hosting him during the years. NR 37 TC 0 Z9 0 U1 0 U2 4 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0096-3003 EI 1873-5649 J9 APPL MATH COMPUT JI Appl. Math. Comput. PD FEB 1 PY 2016 VL 274 BP 762 EP 773 DI 10.1016/j.amc.2015.10.092 PG 12 WC Mathematics, Applied SC Mathematics GA DA0XW UT WOS:000367521900066 ER PT J AU Proudfoot, N Wakefield, M Young, B AF Proudfoot, Nicholas Wakefield, Max Young, Ben TI Intersection cohomology of the symmetric reciprocal plane SO JOURNAL OF ALGEBRAIC COMBINATORICS LA English DT Article DE Intersection cohomology; Reciprocal plane; Kazhdan-Lusztig polynomial; Matroid AB We compute the Kazhdan-Lusztig polynomial of the uniform matroid of rank n - 1 on n elements by proving that the coefficient of t(i) is equal to the number of ways to choose i non-intersecting chords in an (n - i + 1)-gon. We also show that the corresponding intersection cohomology group is isomorphic to the irreducible representation of Sn associated with the partition [n - 2i, 2, ... , 2]. C1 [Proudfoot, Nicholas; Young, Ben] Univ Oregon, Dept Math, Eugene, OR 97403 USA. [Wakefield, Max] US Naval Acad, Dept Math, Annapolis, MD 21402 USA. RP Proudfoot, N (reprint author), Univ Oregon, Dept Math, Eugene, OR 97403 USA. EM njp@uoregon.edu; wakefiel@usna.edu; bjy@uoregon.edu FU NSF [DMS-0950383]; Simons Foundation; Office of Naval Research; Japan Society for the Promotion of Science FX N. Proudfoot Supported by NSF Grant DMS-0950383. M. Wakefield Supported by the Simons Foundation, the Office of Naval Research, and the Japan Society for the Promotion of Science. NR 13 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0925-9899 EI 1572-9192 J9 J ALGEBR COMB JI J. Algebr. Comb. PD FEB PY 2016 VL 43 IS 1 BP 129 EP 138 DI 10.1007/s10801-015-0628-8 PG 10 WC Mathematics SC Mathematics GA DA2FW UT WOS:000367611700007 ER PT J AU Baucom, JN Merrill, MH Field, CR Newsome, GA Johnson, KJ AF Baucom, Jared N. Merrill, Marriner H. Field, Christopher R. Newsome, G. Asher Johnson, Kevin J. TI Effect of Placing a Probe in an Acoustic Drop Levitator SO JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME LA English DT Article AB In this paper, we use computational modeling to explore the effects of placing a probe within the active volume of an acoustic levitator. A two-step computational approach is used to visualize the levitation nodes using thousands of simulated particles driven by the acoustophoretic force and gravity. Our analysis shows that the size and position of a probe can strongly alter the shape, location, and intensity of existing levitation nodes. This has a direct impact on the ability to use acoustic levitation for drop suspension in the presence of disruptive probes. C1 [Baucom, Jared N.; Merrill, Marriner H.] US Naval Res Lab, Multifunct Mat Branch, Washington, DC 20375 USA. [Field, Christopher R.; Johnson, Kevin J.] US Naval Res Lab, Naval Tech Ctr Safety & Survivabil, Washington, DC 20375 USA. [Newsome, G. Asher] Nova Res Inc, Alexandria, VA 22308 USA. RP Merrill, MH (reprint author), US Naval Res Lab, Multifunct Mat Branch, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM marriner.merrill@nrl.navy.mil; graham.newsome.ctr@nrl.navy.mil RI Newsome, G. Asher/J-8970-2012; OI Newsome, G. Asher/0000-0003-1683-2197; Merrill, Marriner/0000-0001-5695-088X FU Office of Naval Research (ONR) through the Basic Research Program of Naval Research Laboratory FX Funding for this project was provided by the Office of Naval Research (ONR) through the Basic Research Program of Naval Research Laboratory. NR 17 TC 0 Z9 0 U1 3 U2 11 PU ASME PI NEW YORK PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA SN 1048-9002 EI 1528-8927 J9 J VIB ACOUST JI J. Vib. Acoust.-Trans. ASME PD FEB PY 2016 VL 138 IS 1 AR 011011 DI 10.1115/1.4031672 PG 7 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA DA0XV UT WOS:000367521800011 ER PT J AU Rafi, JM Pellegrini, G Fadeyev, V Galloway, Z Sadrozinski, HFW Christophersen, M Phlips, BF Lynn, D Kierstead, J Hoeferkamp, M Gorelov, I Palni, P Wang, R Seidel, S AF Rafi, J. M. Pellegrini, G. Fadeyev, V. Galloway, Z. Sadrozinski, H. F. -W. Christophersen, M. Phlips, B. F. Lynn, D. Kierstead, J. Hoeferkamp, M. Gorelov, I. Palni, P. Wang, R. Seidel, S. TI Gamma and proton irradiation effects and thermal stability of electrical characteristics of metal-oxide-silicon capacitors with atomic layer deposited Al2O3 dielectric SO SOLID-STATE ELECTRONICS LA English DT Article DE Al2O3; ALD; Gamma irradiation; Proton irradiation; Irradiation effects; Thermal stability ID INDUCED LEAKAGE CURRENT; KAPPA GATE DIELECTRICS; SLIM EDGE TECHNOLOGY; SI SOLAR-CELLS; ALD AL2O3; SURFACE RECOMBINATION; RADIATION; PASSIVATION; CHARGE; FILMS AB The radiation hardness and thermal stability of the electrical characteristics of atomic layer deposited Al2O3 layers to be used as passivation films for silicon radiation detectors with slim edges are investigated. To directly measure the interface charge and to evaluate its change with the ionizing dose, metal-oxide-silicon (MOS) capacitors implementing differently processed Al2O3 layers were fabricated on p-type silicon substrates. Qualitatively similar results are obtained for degradation of capacitance-voltage and current-voltage characteristics under gamma and proton irradiations up to equivalent doses of 30 Mrad and 21.07 Mrad, respectively. While similar negative charge densities are initially extracted for all non-irradiated capacitors, superior radiation hardness is obtained for MOS structures with alumina layers grown with H2O instead of O-3 as oxidant precursor. Competing effects between radiation-induced positive charge trapping and hydrogen release from the H2O-grown Al2O3 layers may explain their higher radiation resistance. Finally, irradiated and non-irradiated MOS capacitors with differently processed Al2O3 layers have been subjected to thermal treatments in air at temperatures ranging between 100 degrees C and 200 degrees C and the thermal stability of their electrical characteristics has been evaluated. Partial recovery of the gamma-induced degradation has been noticed for O-3-grown MOS structures. This can be explained by a trapped holes emission process, for which an activation energy of 1.38 +/- 0.15 eV has been extracted. (C) 2015 Elsevier Ltd. All rights reserved. C1 [Rafi, J. M.; Pellegrini, G.] IMB CNM CSIC, Inst Microelect Barcelona, Bellaterra 08193, Spain. [Fadeyev, V.; Galloway, Z.; Sadrozinski, H. F. -W.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA. [Christophersen, M.; Phlips, B. F.] US Naval Res Lab, Washington, DC USA. [Lynn, D.; Kierstead, J.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. [Hoeferkamp, M.; Gorelov, I.; Palni, P.; Wang, R.; Seidel, S.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA. RP Rafi, JM (reprint author), IMB CNM CSIC, Inst Microelect Barcelona, Campus UAB, Bellaterra 08193, Spain. EM jm.rafi@csic.es RI Christophersen, Marc/B-6795-2008; Rafi, Joan Marc/D-5500-2012; Pellegrini, Giulio/F-4921-2011 OI Rafi, Joan Marc/0000-0003-4581-9477; Pellegrini, Giulio/0000-0002-1606-3546 FU Spanish Ministry of Education and Science through the Particle Physics National Program [FPA2013-48308-C2-2-P]; Department of Energy [DE-FG02-13ER41983]; DOE [DE-SC0012704] FX This work has been performed within the framework of CERN RD50 Collaboration and ATLAS Planar Pixel Proposal. This work has been partially financed by the Spanish Ministry of Education and Science through the Particle Physics National Program FPA2013-48308-C2-2-P. We would like to thank the Institute for Nanoscience (NSI) at the U.S. Naval Research Laboratory (NRL) and the NSI staff. The work done at NRL was supported by the Chief of Naval Research (CNR). The work at SCIPP was supported by Department of Energy, Grant DE-FG02-13ER41983. The work at BNL was supported by DOE Contract No. DE-SC0012704. NR 55 TC 2 Z9 2 U1 7 U2 18 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-1101 EI 1879-2405 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD FEB PY 2016 VL 116 BP 38 EP 45 DI 10.1016/j.sse.2015.11.029 PG 8 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA DA1FQ UT WOS:000367542100008 ER PT J AU Parker, CW Fritz, TA Carssow, DB AF Parker, C. W. Fritz, T. A. Carssow, D. B. TI The loss cone imager SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Electron spectrometer; Solid state detector; Electron; Collimator; Radiation belts; Loss cone ID PITCH-ANGLE DISTRIBUTION; ENERGETIC PARTICLE; RADIATION BELT; SLOT REGION; ELECTRONS AB The Loss Cone Imager (LCI) instrument package on the US Air Force's Demonstration and Science eXperiment (DSX) mission is expected to provide in-situ measurements of energetic charged particles in the Earth's radiation belts. The LCI comprises an 18-pixel imaging electron spectrometer known as the Fixed Sensor Head (FSH) and a single pixel, narrow view angle, large geometric factor, charged particle telescope known as the High-Sensitivity Telescope (HST). The LCI is anticipated to be flown in a 6000 km x 12,000 km orbit at 42 inclination to allow sampling of the inner and outer radiation belts as well as the slot region. (C) 2015 Elsevier B.V. All rights reserved. C1 [Parker, C. W.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. [Fritz, T. A.] Boston Univ, Ctr Space Phys, Boston, MA 02215 USA. [Carssow, D. B.] Naval Res Lab, Washington, DC 20375 USA. RP Parker, CW (reprint author), Johns Hopkins Univ, Appl Phys Lab, 11100 Johns Hopkins Rd, Laurel, MD 20723 USA. EM Charles.Parker@jhuapl.edu FU United States Air Force Research Laboratory, Space Vehicles Directorate [FA8718-05-C-0013, FA9453-10-C-0221] FX This work was supported by the United States Air Force Research Laboratory, Space Vehicles Directorate under contract numbers FA8718-05-C-0013 and FA9453-10-C-0221. NR 11 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 EI 1872-9576 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD FEB 1 PY 2016 VL 808 BP 11 EP 20 DI 10.1016/j.nima.2015.11.010 PG 10 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA CZ4TM UT WOS:000367095600002 ER PT J AU Tang, NK Mao, SW Kompella, S AF Tang, Ningkai Mao, Shiwen Kompella, Sastry TI On power control in full duplex underlay cognitive radio networks SO AD HOC NETWORKS LA English DT Article DE Cognitive radio; Control theory; Full duplex transmission; Interference mitigation; Power control; Stability ID WIRELESS NETWORKS; CAPACITY; SYSTEMS; DESIGN AB Both cognitive radio (CR) and full duplex transmissions are effective means to enhance spectrum efficiency and network capacity. In this paper, we investigate the problem of power control in an underlay CR network where the CR nodes are capable of full-duplex (FD) transmissions. The objective is to guarantee the required quality of service (QoS) in the form of a minimum signal-to-interference-plus-noise (SINR) ratio at each CR user and keep the interference to primary users below a prescribed threshold. We design an effective distributed power control scheme that integrates a proportional-integral-derivative (PID) controller and a power constraint mechanism to achieve the above goals. We analyze the stability performance of the proposed scheme and develop a hybrid scheme that can switch between FD and half duplex (HD) modes. The proposed scheme is validated with extensive simulations. (C) 2015 Elsevier B.V. All rights reserved. C1 [Tang, Ningkai; Mao, Shiwen] Auburn Univ, Dept Elect & Comp Engn, Auburn, AL 36849 USA. [Kompella, Sastry] Naval Res Lab, Div Informat Technol, Washington, DC 20375 USA. RP Mao, SW (reprint author), Auburn Univ, Dept Elect & Comp Engn, Auburn, AL 36849 USA. EM nzt0007@tigermail.auburn.edu; smao@ieee.org; sk@ieee.org OI Tang, Ningkai/0000-0001-7191-211X FU US National Science Foundation (NSF) [CNS-0953513]; U.S. Naval Research Laboratory (NRL); Wireless Engineering Research and Education Center (WEREC) at Auburn University FX This work is supported in part by the US National Science Foundation (NSF) under Grant CNS-0953513, the U.S. Naval Research Laboratory (NRL), and the Wireless Engineering Research and Education Center (WEREC) at Auburn University. NR 40 TC 1 Z9 1 U1 3 U2 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1570-8705 EI 1570-8713 J9 AD HOC NETW JI Ad Hoc Netw. PD FEB PY 2016 VL 37 BP 183 EP 194 DI 10.1016/j.adhoc.2015.08.018 PN 2 PG 12 WC Computer Science, Information Systems; Telecommunications SC Computer Science; Telecommunications GA CZ0DK UT WOS:000366775100005 ER PT J AU Konkowski, DA Helliwell, TM AF Konkowski, Deborah A. Helliwell, Thomas M. TI Understanding singularities - Classical and quantum SO INTERNATIONAL JOURNAL OF MODERN PHYSICS A LA English DT Article DE Classical singularity; quantum singularity; essentially self-adjoint ID QUASI-REGULAR SPACETIMES; FIELD; TIMES; PERSPECTIVE; DYNAMICS AB The definitions of classical and quantum singularities are reviewed. Examples are given of both as well as their utility in general relativity. In particular, the classical and quantum singularity structure of certain interesting conformally static spherically symmetric spacetimes modeling scalar field collapse are reviewed. The spacetimes include the Roberts spacetime, the Husain-Martinez-Nunez spacetime and the Fonarev spacetime. The importance of understanding spacetime singularity structure is discussed. C1 [Konkowski, Deborah A.] US Naval Acad, Dept Math, 572C Holloway Rd, Annapolis, MD 21402 USA. [Helliwell, Thomas M.] Harvey Mudd Coll, Dept Phys, Claremont, CA 91711 USA. RP Konkowski, DA (reprint author), US Naval Acad, Dept Math, 572C Holloway Rd, Annapolis, MD 21402 USA.; Helliwell, TM (reprint author), Harvey Mudd Coll, Dept Phys, Claremont, CA 91711 USA. EM dak@usna.edu; helliwell@HMC.edu NR 52 TC 0 Z9 0 U1 3 U2 3 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-751X EI 1793-656X J9 INT J MOD PHYS A JI Int. J. Mod. Phys. A PD JAN 30 PY 2016 VL 31 IS 2-3 SI SI AR 1641007 DI 10.1142/S0217751X16410074 PG 10 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA DE2UW UT WOS:000370483700008 ER PT J AU Halim, J Cook, KM Naguib, M Eklund, P Gogotsi, Y Rosen, J Barsoum, MW AF Halim, Joseph Cook, Kevin M. Naguib, Michael Eklund, Per Gogotsi, Yury Rosen, Johanna Barsoum, Michel W. TI X-ray photoelectron spectroscopy of select multi-layered transition metal carbides (MXenes) SO APPLIED SURFACE SCIENCE LA English DT Article DE MXene; XPS; Metal carbides ID 2-DIMENSIONAL TITANIUM CARBIDE; HIGH VOLUMETRIC CAPACITANCE; THIN-FILMS; ELECTRONIC-PROPERTIES; MOLYBDENUM-DISULFIDE; THERMAL-STABILITY; GRAPHITE OXIDE; ION BATTERIES; ATOMIC LAYERS; XPS ANALYSIS AB In this work, a detailed high resolution X-ray photoelectron spectroscopy (XPS) analysis is presented for select MXenes a recently discovered family of two-dimensional (2D) carbides and carbonitrides. Given their 2D nature, understanding their surface chemistry is paramount. Herein we identify and quantify the surface groups present before, and after, sputter-cleaning as well as freshly prepared vs. aged multi layered cold pressed discs. The nominal compositions of the MXenes studied here are Ti-3 C2Tx,Ti3CNTx, Nb2CTx and Nb4C3Tx where T represents surface groups that this work attempts to quantify. In all the cases, the presence of three surface terminations, O, OH and F, in addition to OH-terminations relatively strongly bonded to H2O molecules, was confirmed. From XPS peak fits, it was possible to establish the average sum of the negative charges of the terminations for the aforementioned MXenes. Based on this work, it is now possible to quantify the nature of the surface terminations. This information can, in turn, be used to better design and tailor these novel 2D materials for various applications. Published by Elsevier B.V. C1 [Halim, Joseph; Gogotsi, Yury; Barsoum, Michel W.] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA. [Halim, Joseph; Gogotsi, Yury] Drexel Univ, AJ Drexel Nanomat Inst, Philadelphia, PA 19104 USA. [Halim, Joseph; Eklund, Per; Rosen, Johanna; Barsoum, Michel W.] Linkoping Univ, Dept Phys Chem & Biol IFM, Thin Film Phys Div, SE-58331 Linkoping, Sweden. [Cook, Kevin M.] Naval Air Syst Command, Mat Engn Div, Patuxent River, MD 20670 USA. [Naguib, Michael] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Cook, KM (reprint author), Naval Air Syst Command, Mat Engn Div, Patuxent River, MD 20670 USA. EM kevin.m.cook1@navy.mil RI Eklund, Per/B-7677-2011; Rosen, Johanna/M-9284-2014; OI Eklund, Per/0000-0003-1785-0864; Naguib, Michael/0000-0002-4952-9023 FU Swedish Research Council (VR) [642-2013-8020]; European Research Council under the European Communities/ERC [258509]; KAW Fellowship program; Swedish Foundation for Strategic Research (SSF) through the synergy grant FUNCASE; Future Research Leaders 5 program; Laboratory Directed Research and Development Program of Oak Ridge National Laboratory FX This work was supported by the European Research Council under the European Communities Seventh Framework Programme (FP7/2007-2013)/ERC Grant agreement no. [258509]. J.R. acknowledges funding from the Swedish Research Council (VR) grant no. 642-2013-8020 and from the KAW Fellowship program. The Swedish Foundation for Strategic Research (SSF) is acknowledged for support through the synergy grant FUNCASE and the Future Research Leaders 5 program. MN was partially sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy. We also acknowledge Dr. Jian Yang for providing Nb4AlC3 powders. NR 70 TC 37 Z9 37 U1 55 U2 116 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-4332 EI 1873-5584 J9 APPL SURF SCI JI Appl. Surf. Sci. PD JAN 30 PY 2016 VL 362 BP 406 EP 417 DI 10.1016/j.apsusc.2015.11.089 PG 12 WC Chemistry, Physical; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA DB6XB UT WOS:000368657900056 ER PT J AU Fritz, C Wang, Z Nesbitt, SW Dunkerton, TJ AF Fritz, Cody Wang, Zhuo Nesbitt, Stephen W. Dunkerton, Timothy J. TI Vertical structure and contribution of different types of precipitation during Atlantic tropical cyclone formation as revealed by TRMM PR SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID PART I; REFLECTIVITY; CYCLOGENESIS; PERFORMANCE; ALGORITHM; BUDGET; WAVES; RADAR; RAIN AB Cloud evolution during tropical cyclogenesis was examined using the TRMM PR products from 3 days before to 1 day after genesis. Precipitation increases substantially within 36 h before genesis. Stratiform clouds, mid-level convection, and deep convection all contribute to the increasing precipitation. The contribution by stratiform precipitation is due to its increasing areal coverage, while its pixel rain rate changes little from Day -3 to Day +1. The contribution by mid-level and deep convections results from their increasing areal coverage and intensifying rain rates. Among the three types of convection, deep convection has the largest pixel rain rate, but mid-level convection occurs most frequently and makes the largest contribution to the total precipitation. The overall contribution by convective clouds, despite their low areal coverage, is comparable to that by stratiform precipitation. It is suggested that tropical cyclogenesis may be an outcome of the collective contribution by different precipitation types. C1 [Fritz, Cody; Wang, Zhuo; Nesbitt, Stephen W.] Univ Illinois, Dept Atmospher Sci, Urbana, IL 61801 USA. [Dunkerton, Timothy J.] NW Res Associates Inc, POB 3027, Bellevue, WA 98009 USA. [Dunkerton, Timothy J.] Naval Postgrad Sch, Monterey, CA USA. RP Wang, Z (reprint author), Univ Illinois, Dept Atmospher Sci, Urbana, IL 61801 USA. EM zhuowang@illinois.edu FU National Science Foundation [AGS-1118429] FX This research was supported by the National Science Foundation grant AGS-1118429. TRMM PR data were obtained from the NASA Goddard Earth Sciences Data and Information Services Center. We would also like to acknowledge the NWS National Hurricane Center for making the best track data publicly available. NR 29 TC 2 Z9 2 U1 2 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 EI 1944-8007 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JAN 28 PY 2016 VL 43 IS 2 BP 894 EP 901 DI 10.1002/2015GL067122 PG 8 WC Geosciences, Multidisciplinary SC Geology GA DG4QG UT WOS:000372056400050 ER PT J AU Harris, JR Jensen, KL Shiffler, DA AF Harris, J. R. Jensen, K. L. Shiffler, D. A. TI Edge enhancement control in linear arrays of ungated field emitters SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID VACUUM MICROELECTRONICS; EMISSION CATHODES; SURFACE FLASHOVER; CONES AB In arrays of ungated field emitters, the field enhancement factor of each emitter decreases as the distance between the emitters decreases, an effect known as screening. At the edge of these arrays, emitters experience reduced screening, leading to higher field enhancement factors than emitters at the array center, causing nonuniform emission across the array. Here, we consider this effect in linear arrays of ungated field emitters spaced at distances comparable to their heights, which is the regime that generally maximizes their average current density. A Line Charge Model is used to assess the degree to which these edge effects propagate into the array interior, and to study the impact of varying the height, location, and tip radius of emitters at the ends of an array on the edge enhancement. It is shown that each of these techniques can accomplish this edge enhancement control, but each has advantages and disadvantages that will be discussed. C1 [Harris, J. R.] US Navy Reserve, Navy Operat Support Ctr New Orleans, New Orleans, LA 70143 USA. [Jensen, K. L.] Naval Res Lab, Code 6364, Washington, DC 20375 USA. [Shiffler, D. A.] Air Force Res Lab, Directed Energy Directorate, Albuquerque, NM 87117 USA. RP Harris, JR (reprint author), US Navy Reserve, Navy Operat Support Ctr New Orleans, New Orleans, LA 70143 USA. OI Jensen, Kevin/0000-0001-8644-1680 FU Office of Naval Research Reserve Component Joint ST Focus Area; Air Force Office of Scientific Research FX The authors gratefully acknowledge the support they have received from the Office of Naval Research Reserve Component Joint S&T Focus Area (JRH) and from the Air Force Office of Scientific Research (KLJ), without which this work would not have been possible. NR 42 TC 5 Z9 5 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-8979 EI 1089-7550 J9 J APPL PHYS JI J. Appl. Phys. PD JAN 28 PY 2016 VL 119 IS 4 AR 043301 DI 10.1063/1.4940410 PG 8 WC Physics, Applied SC Physics GA DD4ME UT WOS:000369896300004 ER PT J AU Tseng, F Simsek, E Gunlycke, D AF Tseng, Frank Simsek, Ergun Gunlycke, Daniel TI Using dark states for exciton storage in transition-metal dichalcogenides SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article DE transition-metal dichalcogenides; dark exciton states; exciton storage ID BINDING-ENERGY; QUANTUM-DOT; WS2; SEMICONDUCTORS; CRYSTALS; PHOTOLUMINESCENCE; ABSORPTION; DISULFIDE; DYNAMICS; WSE2 AB We explore the possibility of storing excitons in excitonic dark states in monolayer semiconducting transition-metal dichalcogenides. In addition to being optically inactive, these dark states require the electron and hole to be spatially separated, thus inhibiting electron/hole recombination and allowing exciton lifetimes to be extended. Based on an atomistic exciton model, we derive transition matrix elements and an approximate selection rule showing that excitons could be transitioned into and out of dark states using a pulsed infrared laser. For illustration, we also present exciton population scenarios based on a population analysis for different recombination decay constants. Longer exciton lifetimes could make these materials candidates for applications in energy management and quantum information processing. C1 [Tseng, Frank] Natl Res Council Res Associate, Washington, DC 20001 USA. [Tseng, Frank; Gunlycke, Daniel] Naval Res Lab, Washington, DC 20375 USA. [Simsek, Ergun] George Washington Univ, Washington, DC 20052 USA. RP Gunlycke, D (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM daniel.gunlycke@nrl.navy.mil FU Office of Naval Research (ONR); Naval Research Laboratory (NRL); NRL through the ONR Summer Faculty Program; NRL through the NRC Research Associateship Program FX This work has been funded by the Office of Naval Research (ONR), directly and through the Naval Research Laboratory (NRL). ES and FT acknowledge support from NRL through the ONR Summer Faculty Program and the NRC Research Associateship Program, respectively. NR 37 TC 0 Z9 0 U1 6 U2 22 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 EI 1361-648X J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD JAN 27 PY 2016 VL 28 IS 3 AR 034005 DI 10.1088/0953-8984/28/3/034005 PG 6 WC Physics, Condensed Matter SC Physics GA DB7WG UT WOS:000368727000008 PM 26704568 ER PT J AU Mason, BP Whittaker, M Hemmer, J Arora, S Harper, A Alnemrat, S McEachen, A Helmy, S de Alaniz, JR Hooper, JP AF Mason, B. P. Whittaker, M. Hemmer, J. Arora, S. Harper, A. Alnemrat, S. McEachen, A. Helmy, S. de Alaniz, J. Read Hooper, J. P. TI A temperature-mapping molecular sensor for polyurethane-based elastomers SO APPLIED PHYSICS LETTERS LA English DT Article ID VISIBLE-LIGHT; EXPLOSIVES; DESIGN AB We present a crosslinked polyurethane elastomer featuring a thermochromic molecular sensor for local temperature analysis. The thermochrome is a modified donor-acceptor Stenhouse adduct (DASA) that was dispersed homogeneously into the polymer blend in minuscule amounts. Rapid temperature jump measurements in a pyroprobe and impacts in a Hopkinson bar show that the DASA has suitable kinetics for detecting localized temperature increase following impact or rapid heating. The thermochrome retains a signature of the peak temperature in the elastomer, allowing post-mortem mapping of micron-scale temperature localization in materials such as explosive and propellant composites. We demonstrate the concept by using the kinetics of the DASA activation to determine peak temperatures reached during bullet perforation of the polyurethane. (C) 2016 AIP Publishing LLC. C1 [Mason, B. P.] Naval Surface Warfare Ctr, Res Dept, Indian Head, MD 20640 USA. [Whittaker, M.; Arora, S.; Harper, A.; Alnemrat, S.; McEachen, A.; Hooper, J. P.] Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA. [Hemmer, J.; Helmy, S.; de Alaniz, J. Read] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA. RP Hooper, JP (reprint author), Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA. EM jphooper@nps.edu OI Read de Alaniz, Javier/0000-0003-2770-9477; alnemrat, sufian/0000-0002-5143-4066 FU DTRA Basic Research [HDTRA1618480] FX The authors would like to acknowledge DTRA Basic Research under Grant No. HDTRA1618480 administered by Su Peiris and Allen Dalton and the California NanoSystems Institute (CNSI) Challenge Grant Program. NR 9 TC 5 Z9 5 U1 13 U2 20 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JAN 25 PY 2016 VL 108 IS 4 AR 041906 DI 10.1063/1.4940750 PG 4 WC Physics, Applied SC Physics GA DK8YZ UT WOS:000375217200019 ER PT J AU Grund, JM Toledo, C Davis, SM Ridzon, R Moturi, E Scobie, H Naouri, B Reed, JB Njeuhmeli, E Thomas, AG Benson, FN Sirengo, MW Muyenzi, LN Lija, GJI Rogers, JH Mwanasalli, S Odoyo-June, E Wamai, N Kabuye, G Zulu, JE Aceng, JR Bock, N AF Grund, Jonathan M. Toledo, Carlos Davis, Stephanie M. Ridzon, Renee Moturi, Edna Scobie, Heather Naouri, Boubker Reed, Jason B. Njeuhmeli, Emmanuel Thomas, Anne G. Benson, Francis Ndwiga Sirengo, Martin W. Muyenzi, Leon Ngeruka Lija, Gissenge J. I. Rogers, John H. Mwanasalli, Salli Odoyo-June, Elijah Wamai, Nafuna Kabuye, Geoffrey Zulu, James Exnobert Aceng, Jane Ruth Bock, Naomi TI Tetanus Cases After Voluntary Medical Male Circumcision for HIV Prevention - Eastern and Southern Africa, 2012-2015 SO MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT LA English DT Editorial Material C1 [Grund, Jonathan M.; Toledo, Carlos; Davis, Stephanie M.; Bock, Naomi] CDC, Div Global HIV & TB, Atlanta, GA 30333 USA. [Moturi, Edna; Scobie, Heather; Naouri, Boubker] CDC, Global Immunizat Div, Atlanta, GA 30333 USA. [Reed, Jason B.] Off US Global AIDS Coordinator, Washington, DC USA. [Njeuhmeli, Emmanuel] US Agcy Int Dev, Washington, DC 20523 USA. [Thomas, Anne G.] Naval Hlth Res Ctr, Dept Def, San Diego, CA USA. [Benson, Francis Ndwiga; Sirengo, Martin W.] Minist Hlth, Natl AIDS & STI Control Programme, Nairobi, Kenya. [Muyenzi, Leon Ngeruka] Rwanda Mil Hosp, Minist Def, Kigali, Rwanda. [Lija, Gissenge J. I.] Minist Hlth & Social Welf, Natl AIDS Control Program, Dar Es Salaam, Tanzania. [Rogers, John H.; Mwanasalli, Salli] CDC, Div Global HIV & TB Tanzania, Atlanta, GA 30333 USA. [Odoyo-June, Elijah] CDC, Div Global HIV & TB Kenya, Atlanta, GA 30333 USA. [Wamai, Nafuna; Kabuye, Geoffrey] CDC, Div Global HIV & TB Uganda, Atlanta, GA 30333 USA. [Zulu, James Exnobert] Minist Community Dev Mother & Child Hlth, Lusaka, Zambia. [Aceng, Jane Ruth] Uganda Minist Hlth, Kampala, Uganda. RP Grund, JM (reprint author), CDC, Div Global HIV & TB, Atlanta, GA 30333 USA. EM jgrund@cdc.gov NR 7 TC 3 Z9 3 U1 0 U2 0 PU CENTERS DISEASE CONTROL PI ATLANTA PA 1600 CLIFTON RD, ATLANTA, GA 30333 USA SN 0149-2195 EI 1545-861X J9 MMWR-MORBID MORTAL W JI MMWR-Morb. Mortal. Wkly. Rep. PD JAN 22 PY 2016 VL 65 IS 2 BP 36 EP 37 PG 2 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA DF4TS UT WOS:000371344400006 PM 26797167 ER PT J AU Dahlburg, RB Einaudi, G Taylor, BD Ugarte-Urra, I Warren, HP Rappazzo, AF Velli, M AF Dahlburg, R. B. Einaudi, G. Taylor, B. D. Ugarte-Urra, I. Warren, H. P. Rappazzo, A. F. Velli, M. TI OBSERVATIONAL SIGNATURES OF CORONAL LOOP HEATING AND COOLING DRIVEN BY FOOTPOINT SHUFFLING SO ASTROPHYSICAL JOURNAL LA English DT Article DE Sun: activity; Sun: corona; Sun: magnetic fields; turbulence ID EUV IMAGING SPECTROMETER; SOLAR ACTIVE REGIONS; AN ATOMIC DATABASE; X-RAY TELESCOPE; MAGNETOHYDRODYNAMIC TURBULENCE; TRANSITION-REGION; EMISSION MEASURE; ENERGY-RELEASE; MAGNETIC-FIELD; CURRENT SHEETS AB The evolution of a coronal loop is studied by means of numerical simulations of the fully compressible threedimensional magnetohydrodynamic equations using the HYPERION code. The footpoints of the loop magnetic field are advected by random motions. As a consequence, the magnetic field in the loop is energized and develops turbulent nonlinear dynamics characterized by the continuous formation and dissipation of field-aligned current sheets: energy is deposited at small scales where heating occurs. Dissipation is nonuniformly distributed so that only a fraction of the coronal mass and volume gets heated at any time. Temperature and density are highly structured at scales that, in the solar corona, remain observationally unresolved: the plasma of our simulated loop is multithermal, where highly dynamical hotter and cooler plasma strands are scattered throughout the loop at sub-observational scales. Numerical simulations of coronal loops of 50,000 km length and axial magnetic field intensities ranging from 0.01 to 0.04 T are presented. To connect these simulations to observations, we use the computed number densities and temperatures to synthesize the intensities expected in emission lines typically observed with the Extreme Ultraviolet Imaging Spectrometer on Hinode. These intensities are used to compute differential emission measure distributions using the Monte Carlo Markov Chain code, which are very similar to those derived from observations of solar active regions. We conclude that coronal heating is found to be strongly intermittent in space and time, with only small portions of the coronal loop being heated: in fact, at any given time, most of the corona is cooling down. C1 [Dahlburg, R. B.; Taylor, B. D.] Naval Res Lab, LCP & FD, Washington, DC 20375 USA. [Einaudi, G.] Berkeley Res Associates Inc, Beltsville, MD 20705 USA. [Ugarte-Urra, I.] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA. [Warren, H. P.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA. [Rappazzo, A. F.] Adv Heliophys, Pasadena, CA 91106 USA. [Velli, M.] Univ Calif Los Angeles, EPSS, Los Angeles, CA 90095 USA. RP Dahlburg, RB (reprint author), Naval Res Lab, LCP & FD, Washington, DC 20375 USA. EM rdahlbur@lcp.nrl.navy.mil OI Ugarte-Urra, Ignacio/0000-0001-5503-0491 FU NRL funds [6.2]; NASA SRT program; NASA; Jet Propulsion Laboratory; California Institute of Technology FX We thank an anonymous referee for helpful remarks. We thank J.P. Dahlburg and J.M. Laming for helpful conversations. This research was supported in part by NRL 6.2 funds, the NASA SR&T program, and by NASA through subcontracts with the Jet Propulsion Laboratory, California Institute of Technology. Computational resources supporting this work were provided by LCP&FD, and in part by the DOD HPCMP. AIA and HMI data are courtesy of NASA/SDO and the AIA and HMI science teams. Hinode is a Japanese mission developed and launched by ISAS/JAXA, with NAOJ as domestic partner and NASA and STFC (UK) as international partners. It is operated by these agencies in cooperation with ESA and NSC (Norway). NR 73 TC 4 Z9 4 U1 0 U2 0 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 JAN 20 PY 2016 VL 817 IS 1 AR 47 DI 10.3847/0004-637X/817/1/47 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA DB9YA UT WOS:000368872400047 ER PT J AU Takami, H Murase, K Dermer, CD AF Takami, Hajime Murase, Kohta Dermer, Charles D. TI ISOTROPY CONSTRAINTS ON POWERFUL SOURCES OF ULTRAHIGH-ENERGY COSMIC RAYS AT 10(19) eV SO ASTROPHYSICAL JOURNAL LA English DT Article DE BL Lacertae objects: individual (1ES 0229+200, 1ES 0347-121, 1ES 1101-232); cosmic rays; magnetic fields; methods: numerical ID GALACTIC MAGNETIC-FIELD; LARGE-SCALE STRUCTURE; BL LACERTAE OBJECTS; EXTREME TEV BLAZARS; VHE GAMMA-RAYS; ARRIVAL DISTRIBUTION; EXTRAGALACTIC OBJECTS; TRANSIENT SOURCES; RADIO GALAXIES; ECHO EMISSION AB Anisotropy in the arrival direction distribution of ultrahigh-energy cosmic rays (UHECRs) produced by powerful sources is numerically evaluated. We show that nondetection of significant anisotropy at approximate to 10(19) eV at present and in future experiments imposes general upper limits on UHECR proton luminosity of steady sources as a function of source redshifts. The upper limits constrain the existence of typical steady 10(19) eV UHECR sources in the local universe and limit their local density to greater than or similar to 10(-3) Mpc(-3), assuming average intergalactic magnetic fields less than 10(-9) G. This isotropy, being stronger than that measured at the highest energies, may indicate the transient generation of UHECRs. Our calculations are applied for extreme high-frequency-peaked BL Lacertae objects 1ES 0229+200, 1ES 1101-232, and 1ES 0347-121, to test the UHECR-induced cascade model, in which beamed UHECR protons generate TeV radiation in transit from sources. While the magnetic-field structure surrounding the sources affects the required absolute cosmic-ray luminosity of the blazars, the magnetic-field structure surrounding the Milky Way directly affects the observed anisotropy. If these magnetic fields are weak enough, significant UHECR anisotropy from these blazars is detectable by the Pierre Auger Observatory unless the maximum energy of UHECR protons is below 10(19) eV. Furthermore, if these are the sources of UHECRs above 10(19) eV, a local magnetic structure surrounding the Milky Way is needed to explain the observed isotropy at similar to 10(19) eV, which may be incompatible with large magnetic structures around all galaxies for the UHECR-induced cascade model to work with reasonable jet powers. C1 [Takami, Hajime] High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Ctr Theory, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan. [Murase, Kohta] Inst Adv Study, 1 Einstein Dr, Princeton, NJ 08540 USA. [Murase, Kohta] Penn State Univ, Dept Astron & Astrophys, Ctr Particle & Gravitat Astrophys, Dept Phys, 525 Davey Lab, University Pk, PA 16802 USA. [Dermer, Charles D.] US Naval Res Lab, Div Space Sci, Code 7653, Washington, DC 20375 USA. RP Takami, H (reprint author), High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Ctr Theory, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan. RI Murase, Kohta/B-2710-2016 OI Murase, Kohta/0000-0002-5358-5642 FU Japan Society for the Promotion of Science KAKENHI [24.9375]; NASA through Hubble Fellowship - STScI [51310.01]; NASA [NAS 5-26555]; Naval Research FX We are grateful to Soebur Razzaque, Fumio Takahara, and Eli Waxman for useful discussion. We especially thank John Beacom for stimulating comments on local extragalactic magnetic fields. We also thank an anonymous referee for fruitful comments. This work is supported by the Japan Society for the Promotion of Science KAKENHI 24.9375 (H.T.), and NASA through Hubble Fellowship grant No. 51310.01 awarded by the STScI, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under Contract No. NAS 5-26555 (K.M.). The work of C.D. is supported by the Chief of Naval Research. NR 94 TC 2 Z9 2 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JAN 20 PY 2016 VL 817 IS 1 AR 59 DI 10.3847/0004-637X/817/1/59 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA DB9YA UT WOS:000368872400059 ER PT J AU Long, JW Wallace, JM Peterson, GW Huynh, K AF Long, Jeffrey W. Wallace, Jean M. Peterson, Gregory W. Huynh, Kim TI Manganese Oxide Nanoarchitectures as Broad-Spectrum Sorbents for Toxic Gases SO ACS APPLIED MATERIALS & INTERFACES LA English DT Article DE manganese oxide; ammonia; sulfur dioxide; hydrogen sulfide; air filtration ID SELECTIVE CATALYTIC-REDUCTION; NANOCRYSTALLINE METAL-OXIDES; SULFUR-DIOXIDE; REACTIVE ADSORPTION; SURFACE-CHEMISTRY; AQUEOUS-SOLUTIONS; HYDROGEN-SULFIDE; ETHYL SULFIDE; FT-IR; OXIDATION AB We demonstrate that sol-gel-derived manganese oxide (MnOx) nanoarchitectures exhibit broad-spectrum filtration activity for three chemically diverse toxic gases: NH3, SO2, and H2S. Manganese oxides are synthesized via the reaction of NaMnO4 and fumaric acid to form monolithic gels of disordered, mixed-talent Na-MnOx; incorporated Na+ is readily exchanged for H+ by subsequent acid rinsing to form a more crystalline H-MnOx phase. For both Na-MnOx and H-MnOx forms, controlled pore-fluid removal yields either densified, yet still mesoporous, xerogels or low-density aerogels (prepared by drying from supercritical CO2). The performance of these MnOx nanoarchitectures as filtration media is assessed using dynamic-challenge microbreakthrough protocols. We observe technologically relevant sorption capacities under both dry conditions and wet (80% relative humidity) for each of the three toxic industrial chemicals investigated. The Na-MnOx xerogels and aerogels provide optimal performance with the aerogel exhibiting maximum sorption capacities of 39, 200, and 680 mg g(-1) for NH3, SO2, and H2S, respectively. Postbreakthrough characterization using X-ray photoelectron spectroscopy (XPS) and diffuse-reflectance infrared Fourier transform spectroscopy (DRIFTS) confirms that NH3 is captured and partially protonated within the MnOx structure, while SO2 undergoes oxidation by the redox-active oxide to form adsorbed sulfate at the MnOx surface. Hydrogen sulfide is also oxidized to form a combination of sulfate and sulfur/polysulfide products, concomitant with a decrease in the average Mn oxidation state from 3.43 to 2.94 and generation of a MnOOH phase. C1 [Long, Jeffrey W.] US Naval Res Lab, Surface Chem Branch, Code 6170, Washington, DC 20375 USA. [Wallace, Jean M.] Nova Res Inc, Alexandria, VA 22308 USA. [Peterson, Gregory W.] US Army, Res Dev & Engn Command, Edgewood Chem Biol Ctr, Aberdeen Proving Ground, MD 21010 USA. [Huynh, Kim] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA. RP Long, JW (reprint author), US Naval Res Lab, Surface Chem Branch, Code 6170, Washington, DC 20375 USA. EM jeffrey.long@nrl.navy.mil FU U.S. Office of Naval Research; Edgewood Chemical Biological Center (Aberdeen, MD); U.S. Defense Threat Reduction Agency FX J.W.L. acknowledges the support of the U.S. Office of Naval Research and Edgewood Chemical Biological Center (Aberdeen, MD). G.W.P. and K.L.T.H. acknowledge the support of the U.S. Defense Threat Reduction Agency. NR 66 TC 1 Z9 1 U1 14 U2 58 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1944-8244 J9 ACS APPL MATER INTER JI ACS Appl. Mater. Interfaces PD JAN 20 PY 2016 VL 8 IS 2 BP 1184 EP 1193 DI 10.1021/acsami.5b09508 PG 10 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA DB6UL UT WOS:000368651100016 PM 26741498 ER PT J AU Golden, JP Burden, DK Fears, KP Barlow, DE So, CR Burns, J Miltenberg, B Orihuela, B Rittshof, D Spillmann, CM Wahl, KJ Tender, LM AF Golden, Joel P. Burden, Daniel K. Fears, Kenan P. Barlow, Daniel E. So, Christopher R. Burns, Justin Miltenberg, Benjamin Orihuela, Beatriz Rittshof, Daniel Spillmann, Christopher M. Wahl, Kathryn J. Tender, Leonard M. TI Imaging Active Surface Processes in Barnacle Adhesive Interfaces SO LANGMUIR LA English DT Article ID PLASMON RESONANCE SPECTROSCOPY; SELF-ASSEMBLED MONOLAYERS; BALANUS-AMPHITRITE; IN-SITU; AMPHIBALANUS-AMPHITRITE; BASE PLATE; CEMENT; GROWTH; REATTACHMENT; MECHANICS AB Surface plasmon resonance imaging (SPRI) and voltammetry were used simultaneously to monitor Amphibalanus (=Balanus) amphitrite barnacles reattached and grown on gold-coated glass slides in artificial seawater. Upon reattachment, SPRI revealed rapid surface adsorption of material with a higher refractive index than seawater at the barnacle/gold interface. Over longer time periods, SPRI also revealed secretory activity around the perimeter of the barnacle along the seawater/gold interface extending many millimeters beyond the barnacle and varying in shape and region with time. Ex situ experiments using attenuated total reflectance infrared (ATR-IR) spectroscopy confirmed that reattachment of barnacles was accompanied by adsorption of protein to surfaces on similar time scales as those in the SPRI experiments. Barnacles were grown through multiple molting cycles. While the initial reattachment region remained largely unchanged, SPRI revealed the formation of sets of paired concentric rings having alternately darker/lighter appearance (corresponding to lower and higher refractive indices, respectively) at the barnacle/gold interface beneath the region of new growth. Ex situ experiments coupling the SPRI imaging with optical and FTIR microscopy revealed that the paired rings coincide with molt cycles, with the brighter rings associated with regions enriched in amide moieties. The brighter rings were located just beyond orifices of cement ducts, consistent with delivery of amide-rich chemistry from the ducts. The darker rings were associated with newly expanded cuticle. In situ voltammetry using the SPRI gold substrate as the working electrode revealed presence of redox active compounds (oxidation potential approx 0.2 V vs Ag/AgCl) after barnacles were reattached on surfaces. Redox activity persisted during the reattachment period. The results reveal surface adsorption processes coupled to the complex secretory and chemical activity under barnacles as they construct their adhesive interfaces. C1 [Golden, Joel P.; Spillmann, Christopher M.; Tender, Leonard M.] US Navy, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. [Burden, Daniel K.; So, Christopher R.; Burns, Justin] US Navy, Res Lab, Natl Res Council Post Doc, Washington, DC 20375 USA. [Fears, Kenan P.; Barlow, Daniel E.; Wahl, Kathryn J.] US Navy, Res Lab, Div Chem, Washington, DC 20375 USA. [Miltenberg, Benjamin] NREIP, Amer Soc Engn Educ, Washington, DC 20036 USA. [Orihuela, Beatriz; Rittshof, Daniel] Duke Univ, Marine Lab, Beaufort, NC 28516 USA. RP Tender, LM (reprint author), US Navy, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.; Wahl, KJ (reprint author), US Navy, Res Lab, Div Chem, Washington, DC 20375 USA. EM kathryn.wahl@nrl.navy.mil; leonard.tender@nrl.navy.mil OI Wahl, Kathryn/0000-0001-8163-6964; So, Christopher/0000-0001-7572-778X FU Office of Naval Research (NRL) [N0001414WX20573, N0001414WX00736]; Office of Naval Research (Duke) [N0014-11-1-0180, N00014-12-1-0365]; NRL FX We acknowledge support from the Office of Naval Research Coatings Program (NRL N0001414WX20.573 and N0001414WX00736; Duke N0014-11-1-0180 and N00014-12-1-0365), and NRL Base 6.1 Funding. D.K.B. and J.B. were National Research Council Postdoctoral Associates. NR 56 TC 2 Z9 2 U1 3 U2 28 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD JAN 19 PY 2016 VL 32 IS 2 BP 541 EP 550 DI 10.1021/acs.langmuir.5b03286 PG 10 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA DB5OO UT WOS:000368563700019 PM 26681301 ER PT J AU Wilson, RM Shirley, WE Natu, SS AF Wilson, Ryan M. Shirley, Wilbur E. Natu, Stefan S. TI Anomalous supersolidity in a weakly interacting dipolar Bose mixture on a square lattice SO PHYSICAL REVIEW A LA English DT Article ID POLAR-MOLECULES; QUANTUM; PHASE; BOSONS; SUPERFLUID; HELIUM; ATOMS; STATE; GAS AB We calculate the mean-field phase diagram of a zero-temperature, binary Bose mixture on a square optical lattice, where one species possesses a non-negligible dipole moment. Remarkably, this system exhibits supersolidity for anomalously weak dipolar interaction strengths, which are readily accessible with current experimental capabilities. The supersolid phases are robust, in that they occupy large regions in the parameter space. Further, we identify a first-order quantum phase transition between supersolid and superfluid phases. Our results demonstrate the rich features of the dipolar Bose mixture, and suggest that this system is well suited for exploring supersolidity in the experimental setting. C1 [Wilson, Ryan M.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA. [Shirley, Wilbur E.; Natu, Stefan S.] Univ Maryland, Condensed Matter Theory Ctr, College Pk, MD 20742 USA. [Shirley, Wilbur E.; Natu, Stefan S.] Univ Maryland, Joint Quantum Inst, Dept Phys, College Pk, MD 20742 USA. [Shirley, Wilbur E.] CALTECH, Pasadena, CA 91125 USA. RP Shirley, WE (reprint author), Univ Maryland, Condensed Matter Theory Ctr, College Pk, MD 20742 USA.; Shirley, WE (reprint author), Univ Maryland, Joint Quantum Inst, Dept Phys, College Pk, MD 20742 USA.; Shirley, WE (reprint author), CALTECH, Pasadena, CA 91125 USA. EM rwilson@usna.edu FU Office of Naval Research [N00014115WX01372]; National Science Foundation [PHY-1516421]; JQI-PFC Seed Grant; LPS-CMTC; LPS-MPO-CMTC; JQI-NSF-PFC; ARO-MURI FX We acknowledge B. M. Anderson for helpful conversations in the early stages of this work. R.W. acknowledges partial support from the Office of Naval Research under Grant No. N00014115WX01372, and from the National Science Foundation under Grant No. PHY-1516421. W.S. acknowledges support from a JQI-PFC Seed Grant. S.N. thanks the LPS-CMTC, LPS-MPO-CMTC, JQI-NSF-PFC, and ARO-MURI for support. NR 56 TC 1 Z9 1 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 EI 1094-1622 J9 PHYS REV A JI Phys. Rev. A PD JAN 19 PY 2016 VL 93 IS 1 AR 011605 DI 10.1103/PhysRevA.93.011605 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA DB4HH UT WOS:000368473600004 ER PT J AU Adamczyk, L Adkins, JK Agakishiev, G Aggarwal, MM Ahammed, Z Alekseev, I Aparin, A Arkhipkin, D Aschenauer, EC Averichev, GS Bai, X Bairathi, V Banerjee, A Bellwied, R Bhasin, A Bhati, AK Bhattarai, P Bielcik, J Bielcikova, J Bland, LC Bordyuzhin, IG Bouchet, J Brandenburg, D Brandin, AV Bunzarov, I Butterworth, J Caines, H Sanchez, MCD Campbell, JM Cebra, D Cervantes, MC Chakaberia, I Chaloupka, P Chang, Z Chattopadhyay, S Chen, X Chen, JH Cheng, J Cherney, M Chisman, O Christie, W Contin, G Crawford, HJ Das, S De Silva, LC Debbe, RR Dedovich, TG Deng, J Derevschikov, AA di Ruzza, B Didenko, L Dilks, C Dong, X Drachenberg, JL Draper, JE Du, CM Dunkelberger, LE Dunlop, JC Efimov, LG Engelage, J Eppley, G Esha, R Evdokimov, O Eyser, O Fatemi, R Fazio, S Federic, P Fedorisin, J Feng, Z Filip, P Fisyak, Y Flores, CE Fulek, L Gagliardi, CA Garand, D Geurts, F Gibson, A Girard, M Greiner, L Grosnick, D Gunarathne, DS Guo, Y Gupta, A Gupta, S Guryn, W Hamad, A Hamed, A Haque, R Harris, JW He, L Heppelmann, S Heppelmann, S Hirsch, A Hoffmann, GW Hofman, DJ Horvat, S Huang, HZ Huang, B Huang, X Huck, P Humanic, TJ Igo, G Jacobs, WW Jang, H Jiang, K Judd, EG Kabana, S Kalinkin, D Kang, K Kauder, K Ke, HW Keane, D Kechechyan, A Khan, ZH Kikola, DP Kisel, I Kisiel, A Kochenda, L Koetke, DD Kollegger, T Kosarzewski, LK Kraishan, AF Kravtsov, P Krueger, K Kulakov, I Kumar, L Kycia, RA Lamont, MAC Landgraf, JM Landry, KD Lauret, J Lebedev, A Lednicky, R Lee, JH Li, X Li, Y Li, W Li, C Li, X Li, ZM Lisa, MA Liu, F Ljubicic, T Llope, WJ Lomnitz, M Longacre, RS Luo, X Ma, L Ma, YG Ma, GL Ma, R Magdy, N Majka, R Manion, A Margetis, S Markert, C Masui, H Matis, HS McDonald, D Meehan, K Minaev, NG Mioduszewski, S Mishra, D Mohanty, B Mondal, MM Morozov, DA Mustafa, MK Nandi, BK Nasim, M Nayak, TK Nigmatkulov, G Niida, T Nogach, LV Noh, SY Novak, J Nurushev, SB Odyniec, G Ogawa, A Oh, K Okorokov, V Jr, DO Page, BS Pak, R Pan, YX Pandit, Y Panebratsev, Y Pawlik, B Pei, H Perkins, C Peterson, A Pile, P Planinic, M Pluta, J Poljak, N Poniatowska, K Porter, J Posik, M Poskanzer, AM Pruthi, NK Putschke, J Qiu, H Quintero, A Ramachandran, S Raniwala, S Raniwala, R Ray, RL Ritter, HG Roberts, JB Rogachevskiy, OV Romero, JL Roy, A Ruan, L Rusnak, J Rusnakova, O Sahoo, NR Sahu, PK Salur, S Sandweiss, J Sarkar, A Schambach, J Scharenberg, RP Schmah, AM Schmidke, WB Schmitz, N Seger, J Seyboth, P Shah, N Shahaliev, E Shanmuganathan, PV Shao, M Sharma, B Sharma, MK Shen, WQ Shi, SS Shou, QY Sichtermann, EP Sikora, R Simko, M Singha, S Skoby, MJ Smirnov, N Smirnov, D Song, L Sorensen, P Spinka, HM Srivastava, B Stanislaus, TDS Stepanov, M Stock, R Strikhanov, M Stringfellow, B Sumbera, M Summa, B Sun, X Sun, Z Sun, Y Sun, XM Surrow, B Svirida, N Szelezniak, MA Tang, Z Tang, AH Tarnowsky, T Tawfik, A Thaeder, J Thomas, JH Timmins, AR Tlusty, D Tokarev, M Trentalange, S Tribble, RE Tribedy, P Tripathy, SK Trzeciak, BA Tsai, OD Ullrich, T Underwood, DG Upsal, I Van Buren, G van Nieuwenhuizen, G Vandenbroucke, M Varma, R Vasiliev, AN Vertesi, R Videbaek, F Viyogi, YP Vokal, S Voloshin, SA Vossen, A Wang, F Wang, Y Wang, G Wang, Y Wang, JS Wang, H Webb, JC Webb, G Wen, L Westfall, GD Wieman, H Wissink, SW Witt, R Wu, YF Wu, Y Xiao, ZG Xie, W Xin, K Xu, Z Xu, H Xu, YF Xu, QH Xu, N Yang, Y Yang, C Yang, S Yang, Y Yang, Q Ye, Z Ye, Z Yepes, P Yi, L Yip, K Yoo, IK Yu, N Zbroszczyk, H Zha, W Zhang, JB Zhang, Y Zhang, S Zhang, J Zhang, J Zhang, Z Zhang, XP Zhao, J Zhong, C Zhou, L Zhu, X Zoulkarneeva, Y Zyzak, M AF Adamczyk, L. Adkins, J. K. Agakishiev, G. Aggarwal, M. M. Ahammed, Z. Alekseev, I. Aparin, A. Arkhipkin, D. Aschenauer, E. C. Averichev, G. S. Bai, X. Bairathi, V. Banerjee, A. Bellwied, R. Bhasin, A. Bhati, A. K. Bhattarai, P. Bielcik, J. Bielcikova, J. Bland, L. C. Bordyuzhin, I. G. Bouchet, J. Brandenburg, D. Brandin, A. V. Bunzarov, I. Butterworth, J. Caines, H. Sanchez, M. Calderon de la Barca Campbell, J. M. Cebra, D. Cervantes, M. C. Chakaberia, I. Chaloupka, P. Chang, Z. Chattopadhyay, S. Chen, X. Chen, J. H. Cheng, J. Cherney, M. Chisman, O. Christie, W. Contin, G. Crawford, H. J. Das, S. De Silva, L. C. Debbe, R. R. Dedovich, T. G. Deng, J. Derevschikov, A. A. di Ruzza, B. Didenko, L. Dilks, C. Dong, X. Drachenberg, J. L. Draper, J. E. Du, C. M. Dunkelberger, L. E. Dunlop, J. C. Efimov, L. G. Engelage, J. Eppley, G. Esha, R. Evdokimov, O. Eyser, O. Fatemi, R. Fazio, S. Federic, P. Fedorisin, J. Feng, Z. Filip, P. Fisyak, Y. Flores, C. E. Fulek, L. Gagliardi, C. A. Garand, D. Geurts, F. Gibson, A. Girard, M. Greiner, L. Grosnick, D. Gunarathne, D. S. Guo, Y. Gupta, A. Gupta, S. Guryn, W. Hamad, A. Hamed, A. Haque, R. Harris, J. W. He, L. Heppelmann, S. Heppelmann, S. Hirsch, A. Hoffmann, G. W. Hofman, D. J. Horvat, S. Huang, H. Z. Huang, B. Huang, X. Huck, P. Humanic, T. J. Igo, G. Jacobs, W. W. Jang, H. Jiang, K. Judd, E. G. Kabana, S. Kalinkin, D. Kang, K. Kauder, K. Ke, H. W. Keane, D. Kechechyan, A. Khan, Z. H. Kikola, D. P. Kisel, I. Kisiel, A. Kochenda, L. Koetke, D. D. Kollegger, T. Kosarzewski, L. K. Kraishan, A. F. Kravtsov, P. Krueger, K. Kulakov, I. Kumar, L. Kycia, R. A. Lamont, M. A. C. Landgraf, J. M. Landry, K. D. Lauret, J. Lebedev, A. Lednicky, R. Lee, J. H. Li, X. Li, Y. Li, W. Li, C. Li, X. Li, Z. M. Lisa, M. A. Liu, F. Ljubicic, T. Llope, W. J. Lomnitz, M. Longacre, R. S. Luo, X. Ma, L. Ma, Y. G. Ma, G. L. Ma, R. Magdy, N. Majka, R. Manion, A. Margetis, S. Markert, C. Masui, H. Matis, H. S. McDonald, D. Meehan, K. Minaev, N. G. Mioduszewski, S. Mishra, D. Mohanty, B. Mondal, M. M. Morozov, D. A. Mustafa, M. K. Nandi, B. K. Nasim, Md. Nayak, T. K. Nigmatkulov, G. Niida, T. Nogach, L. V. Noh, S. Y. Novak, J. Nurushev, S. B. Odyniec, G. Ogawa, A. Oh, K. Okorokov, V. Jr, D. Olvitt Page, B. S. Pak, R. Pan, Y. X. Pandit, Y. Panebratsev, Y. Pawlik, B. Pei, H. Perkins, C. Peterson, A. Pile, P. Planinic, M. Pluta, J. Poljak, N. Poniatowska, K. Porter, J. Posik, M. Poskanzer, A. M. Pruthi, N. K. Putschke, J. Qiu, H. Quintero, A. Ramachandran, S. Raniwala, S. Raniwala, R. Ray, R. L. Ritter, H. G. Roberts, J. B. Rogachevskiy, O. V. Romero, J. L. Roy, A. Ruan, L. Rusnak, J. Rusnakova, O. Sahoo, N. R. Sahu, P. K. Salur, S. Sandweiss, J. Sarkar, A. Schambach, J. Scharenberg, R. P. Schmah, A. M. Schmidke, W. B. Schmitz, N. Seger, J. Seyboth, P. Shah, N. Shahaliev, E. Shanmuganathan, P. V. Shao, M. Sharma, B. Sharma, M. K. Shen, W. Q. Shi, S. S. Shou, Q. Y. Sichtermann, E. P. Sikora, R. Simko, M. Singha, S. Skoby, M. J. Smirnov, N. Smirnov, D. Song, L. Sorensen, P. Spinka, H. M. Srivastava, B. Stanislaus, T. D. S. Stepanov, M. Stock, R. Strikhanov, M. Stringfellow, B. Sumbera, M. Summa, B. Sun, X. Sun, Z. Sun, Y. Sun, X. M. Surrow, B. Svirida, N. Szelezniak, M. A. Tang, Z. Tang, A. H. Tarnowsky, T. Tawfik, A. Thaeder, J. Thomas, J. H. Timmins, A. R. Tlusty, D. Tokarev, M. Trentalange, S. Tribble, R. E. Tribedy, P. Tripathy, S. K. Trzeciak, B. A. Tsai, O. D. Ullrich, T. Underwood, D. G. Upsal, I. Van Buren, G. van Nieuwenhuizen, G. Vandenbroucke, M. Varma, R. Vasiliev, A. N. Vertesi, R. Videbaek, F. Viyogi, Y. P. Vokal, S. Voloshin, S. A. Vossen, A. Wang, F. Wang, Y. Wang, G. Wang, Y. Wang, J. S. Wang, H. Webb, J. C. Webb, G. Wen, L. Westfall, G. D. Wieman, H. Wissink, S. W. Witt, R. Wu, Y. F. Wu, Y. Xiao, Z. G. Xie, W. Xin, K. Xu, Z. Xu, H. Xu, Y. F. Xu, Q. H. Xu, N. Yang, Y. Yang, C. Yang, S. Yang, Y. Yang, Q. Ye, Z. Ye, Z. Yepes, P. Yi, L. Yip, K. Yoo, I. -K. Yu, N. Zbroszczyk, H. Zha, W. Zhang, J. B. Zhang, Y. Zhang, S. Zhang, J. Zhang, J. Zhang, Z. Zhang, X. P. Zhao, J. Zhong, C. Zhou, L. Zhu, X. Zoulkarneeva, Y. Zyzak, M. CA STAR Collaboration TI Centrality dependence of identified particle elliptic flow in relativistic heavy ion collisions at root s(NN)=7.7-62.4 GeV SO PHYSICAL REVIEW C LA English DT Article ID NUCLEAR COLLISIONS; RESONANCE DECAY; PARTON; MODEL; STAR AB Elliptic flow (v(2)) values for identified particles at midrapidity in Au + Au collisions measured by the STAR experiment in the Beam Energy Scan at the Relativistic Heavy Ion Collider at root s(NN) = 7.7-62.4 GeV are presented for three centrality classes. The centrality dependence and the data at root s(NN) = 14.5 GeV are new. Except at the lowest beam energies, we observe a similar relative v(2) baryon-meson splitting for all centrality classes which is in agreement within 15% with the number-of-constituent quark scaling. The larger v(2) for most particles relative to antiparticles, already observed for minimum bias collisions, shows a clear centrality dependence, with the largest difference for the most central collisions. Also, the results are compared with a multiphase transport (AMPT) model and fit with a blast wave model. C1 [Adamczyk, L.; Fulek, L.; Sikora, R.] AGH Univ Sci & Technol, PL-30059 Krakow, Poland. [Krueger, K.; Spinka, H. M.; Underwood, D. G.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. [Arkhipkin, D.; Aschenauer, E. C.; Bland, L. C.; Chakaberia, I.; Christie, W.; Debbe, R. R.; di Ruzza, B.; Didenko, L.; Dunlop, J. C.; Eyser, O.; Fazio, S.; Fisyak, Y.; Guryn, W.; Heppelmann, S.; Ke, H. W.; Lamont, M. A. C.; Landgraf, J. M.; Lauret, J.; Lebedev, A.; Lee, J. H.; Li, X.; Ljubicic, T.; Longacre, R. S.; Ma, R.; Ogawa, A.; Page, B. S.; Pak, R.; Pile, P.; Ruan, L.; Schmidke, W. B.; Smirnov, D.; Sorensen, P.; Tang, A. H.; Tribedy, P.; Ullrich, T.; Van Buren, G.; van Nieuwenhuizen, G.; Videbaek, F.; Wang, H.; Webb, J. C.; Webb, G.; Xu, Z.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Crawford, H. J.; Engelage, J.; Judd, E. G.; Perkins, C.] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Sanchez, M. Calderon de la Barca; Cebra, D.; Draper, J. E.; Flores, C. E.; Meehan, K.; Romero, J. L.] Univ Calif Davis, Davis, CA 95616 USA. [Chisman, O.; Dunkelberger, L. E.; Esha, R.; Huang, H. Z.; Igo, G.; Landry, K. D.; Nasim, Md.; Pan, Y. X.; Trentalange, S.; Tsai, O. D.; Wang, G.; Wen, L.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA. [Feng, Z.; Huck, P.; Li, Z. M.; Liu, F.; Luo, X.; Pei, H.; Shi, S. S.; Sun, X. M.; Wang, Y.; Wu, Y. F.; Yang, Y.; Yu, N.; Zhang, J. B.; Zhao, J.] Cent China Normal Univ HZNU, Wuhan 430079, Peoples R China. [Bai, X.; Evdokimov, O.; Hofman, D. J.; Huang, B.; Khan, Z. H.; Pandit, Y.; Ye, Z.] Univ Illinois, Chicago, IL 60607 USA. [Cherney, M.; De Silva, L. C.; Seger, J.] Creighton Univ, Omaha, NE 68178 USA. [Bielcik, J.; Chaloupka, P.; Rusnakova, O.; Trzeciak, B. A.] Czech Tech Univ, FNSPE, Prague 11519, Czech Republic. [Bielcikova, J.; Federic, P.; Rusnak, J.; Simko, M.; Sumbera, M.; Tlusty, D.; Vertesi, R.] Nucl Phys Inst AS CR, Rez 25068, Czech Republic. [Kisel, I.; Kollegger, T.; Kulakov, I.; Stock, R.; Zyzak, M.] FIAS, D-60438 Frankfurt, Germany. [Das, S.; Sahu, P. K.; Tripathy, S. K.] Inst Phys, Bhubaneswar 751005, Orissa, India. [Nandi, B. K.; Sarkar, A.; Varma, R.] Indian Inst Technol, Bombay 400076, Maharashtra, India. [Jacobs, W. W.; Skoby, M. J.; Vossen, A.; Wissink, S. W.] Indiana Univ, Bloomington, IN 47408 USA. [Alekseev, I.; Bordyuzhin, I. G.; Kalinkin, D.; Svirida, N.] Alikhanov Inst Theoret & Expt Phys, Moscow 117218, Russia. [Bhasin, A.; Gupta, A.; Gupta, S.; Sharma, M. K.] Univ Jammu, Jammu 180001, India. [Agakishiev, G.; Aparin, A.; Averichev, G. S.; Bunzarov, I.; Dedovich, T. G.; Efimov, L. G.; Fedorisin, J.; Filip, P.; Kechechyan, A.; Lednicky, R.; Panebratsev, Y.; Rogachevskiy, O. V.; Shahaliev, E.; Tokarev, M.; Vokal, S.; Zoulkarneeva, Y.] Joint Inst Nucl Res, Dubna 141980, Russia. [Bouchet, J.; Hamad, A.; Kabana, S.; Keane, D.; Lomnitz, M.; Margetis, S.; Quintero, A.; Shanmuganathan, P. V.; Singha, S.; Wu, Y.] Kent State Univ, Kent, OH 44242 USA. [Adkins, J. K.; Fatemi, R.; Ramachandran, S.] Univ Kentucky, Lexington, KY 40506 USA. [Jang, H.; Noh, S. Y.] Korea Inst Sci & Technol Informat, Taejon 305701, South Korea. [Chen, X.; Du, C. M.; Sun, Z.; Wang, J. S.; Xu, H.; Yang, Y.; Zhang, J.] Inst Modern Phys, Lanzhou 730000, Peoples R China. [Contin, G.; Dong, X.; Greiner, L.; Manion, A.; Masui, H.; Matis, H. S.; Mustafa, M. K.; Odyniec, G.; Porter, J.; Poskanzer, A. M.; Qiu, H.; Ritter, H. G.; Salur, S.; Schmah, A. M.; Sichtermann, E. P.; Sun, X.; Szelezniak, M. A.; Thaeder, J.; Thomas, J. H.; Wieman, H.; Xu, N.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Schmitz, N.; Seyboth, P.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. [Novak, J.; Tarnowsky, T.; Westfall, G. D.] Michigan State Univ, E Lansing, MI 48824 USA. [Brandin, A. V.; Kochenda, L.; Kravtsov, P.; Nigmatkulov, G.; Okorokov, V.; Strikhanov, M.] Moscow Engn Phys Inst, Moscow 115409, Russia. [Bairathi, V.; Haque, R.; Mishra, D.; Mohanty, B.] Natl Inst Sci Educ & Res, Bhubaneswar 751005, Orissa, India. [Campbell, J. M.; Humanic, T. J.; Lisa, M. A.; Peterson, A.; Upsal, I.] Ohio State Univ, Columbus, OH 43210 USA. [Kycia, R. A.; Pawlik, B.] Inst Nucl Phys PAN, PL-31342 Krakow, Poland. [Aggarwal, M. M.; Bhati, A. K.; Kumar, L.; Pruthi, N. K.; Sharma, B.] Panjab Univ, Chandigarh 160014, India. [Dilks, C.; Heppelmann, S.; Summa, B.] Penn State Univ, University Pk, PA 16802 USA. [Derevschikov, A. A.; Minaev, N. G.; Morozov, D. A.; Nogach, L. V.; Nurushev, S. B.; Vasiliev, A. N.] Inst High Energy Phys, Protvino 142281, Russia. [Garand, D.; He, L.; Hirsch, A.; Scharenberg, R. P.; Srivastava, B.; Stepanov, M.; Stringfellow, B.; Wang, F.; Xie, W.] Purdue Univ, W Lafayette, IN 47907 USA. [Oh, K.; Yoo, I. -K.] Pusan Natl Univ, Pusan 609735, South Korea. [Raniwala, S.; Raniwala, R.] Univ Rajasthan, Jaipur 302004, Rajasthan, India. [Brandenburg, D.; Butterworth, J.; Eppley, G.; Geurts, F.; Roberts, J. B.; Xin, K.; Yepes, P.] Rice Univ, Houston, TX 77251 USA. [Guo, Y.; Jiang, K.; Li, C.; Shao, M.; Sun, Y.; Tang, Z.; Yang, C.; Yang, S.; Yang, Q.; Zha, W.; Zhang, Y.; Zhou, L.] Univ Sci & Technol China, Hefei 230026, Peoples R China. [Deng, J.; Xu, Q. H.; Zhang, J.] Shandong Univ, Jinan 250100, Shandong, Peoples R China. [Chen, J. H.; Li, W.; Ma, L.; Ma, Y. G.; Ma, G. L.; Shah, N.; Shen, W. Q.; Shou, Q. Y.; Xu, Y. F.; Zhang, S.; Zhang, Z.; Zhong, C.] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China. [Magdy, N.] SUNY Stony Brook, Stony Brook, NY 11794 USA. [Gunarathne, D. S.; Kraishan, A. F.; Li, X.; Jr, D. Olvitt; Posik, M.; Surrow, B.; Vandenbroucke, M.] Temple Univ, Philadelphia, PA 19122 USA. [Cervantes, M. C.; Chang, Z.; Gagliardi, C. A.; Hamed, A.; Mioduszewski, S.; Mondal, M. M.; Sahoo, N. R.; Tribble, R. E.] Texas A&M Univ, College Stn, TX 77843 USA. [Bhattarai, P.; Hoffmann, G. W.; Markert, C.; Ray, R. L.; Schambach, J.] Univ Texas Austin, Austin, TX 78712 USA. [Bellwied, R.; McDonald, D.; Song, L.; Timmins, A. R.] Univ Houston, Houston, TX 77204 USA. [Cheng, J.; Huang, X.; Kang, K.; Li, Y.; Wang, Y.; Xiao, Z. G.; Zhang, X. P.; Zhu, X.] Tsinghua Univ, Beijing 100084, Peoples R China. [Witt, R.] US Naval Acad, Annapolis, MD 21402 USA. [Drachenberg, J. L.; Gibson, A.; Grosnick, D.; Koetke, D. D.; Stanislaus, T. D. S.] Valparaiso Univ, Valparaiso, IN 46383 USA. [Ahammed, Z.; Banerjee, A.; Chattopadhyay, S.; Nayak, T. K.; Roy, A.; Viyogi, Y. P.] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India. [Girard, M.; Kikola, D. P.; Kisiel, A.; Kosarzewski, L. K.; Pluta, J.; Poniatowska, K.; Zbroszczyk, H.] Warsaw Univ Technol, PL-00661 Warsaw, Poland. [Kauder, K.; Llope, W. J.; Niida, T.; Putschke, J.; Voloshin, S. A.] Wayne State Univ, Detroit, MI 48201 USA. [Tawfik, A.] World Lab Cosmol & Particle Phys WLCAPP, Cairo 11571, Egypt. [Caines, H.; Harris, J. W.; Horvat, S.; Majka, R.; Sandweiss, J.; Smirnov, N.; Yi, L.] Yale Univ, New Haven, CT 06520 USA. [Planinic, M.; Poljak, N.] Univ Zagreb, HR-10002 Zagreb, Croatia. RP Adamczyk, L (reprint author), AGH Univ Sci & Technol, PL-30059 Krakow, Poland. RI Chaloupka, Petr/E-5965-2012; Huang, Bingchu/H-6343-2015; Fazio, Salvatore /G-5156-2010; Xin, Kefeng/O-9195-2016; Yi, Li/Q-1705-2016; Alekseev, Igor/J-8070-2014; Tawfik, Abdel Nasser/M-6220-2013; Okorokov, Vitaly/C-4800-2017; Ma, Yu-Gang/M-8122-2013; Gunarathne, Devika/C-4903-2017; OI Kycia, Radoslaw/0000-0002-6390-4627; Huang, Bingchu/0000-0002-3253-3210; Xin, Kefeng/0000-0003-4853-9219; Yi, Li/0000-0002-7512-2657; Alekseev, Igor/0000-0003-3358-9635; Tawfik, Abdel Nasser/0000-0002-1679-0225; Okorokov, Vitaly/0000-0002-7162-5345; Ma, Yu-Gang/0000-0002-0233-9900; Gunarathne, Devika/0000-0002-7155-7418; Ke, Hongwei/0000-0003-1463-7291 FU Office of Nuclear Physics within the U.S. DOE Office of Science; U.S. NSF; Ministry of Education and Science of the Russian Federation; NNSFC of China; CAS of China; MoST of China; MoE of China; National Research Foundation of Korea; GA of the Czech Republic; MSMT of the Czech Republic; FIAS of Germany; DAE of India; DST of India; UGC of India; National Science Centre of Poland; National Research Foundation; Ministry of Science, Education and Sports of the Republic of Croatia; RosAtom of Russia; RHIC Operations Group and RCF at BNL; NERSC Center at LBNL; KISTI Center in Korea; Open Science Grid consortium FX We thank the RHIC Operations Group and RCF at BNL, the NERSC Center at LBNL, the KISTI Center in Korea, and the Open Science Grid consortium for providing resources and support. This work was supported in part by the Office of Nuclear Physics within the U.S. DOE Office of Science, the U.S. NSF, the Ministry of Education and Science of the Russian Federation, NNSFC, CAS, MoST and MoE of China, the National Research Foundation of Korea, GA and MSMT of the Czech Republic, FIAS of Germany, DAE, DST, and UGC of India, the National Science Centre of Poland, National Research Foundation, the Ministry of Science, Education and Sports of the Republic of Croatia, and RosAtom of Russia. NR 28 TC 2 Z9 2 U1 4 U2 16 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 EI 1089-490X J9 PHYS REV C JI Phys. Rev. C PD JAN 19 PY 2016 VL 93 IS 1 AR 014907 DI 10.1103/PhysRevC.93.014907 PG 13 WC Physics, Nuclear SC Physics GA DB4WL UT WOS:000368514200007 ER PT J AU Tang, YX Gao, HX Mitchell, LA Parrish, DA Shreeve, JM AF Tang, Yongxing Gao, Haixiang Mitchell, Lauren A. Parrish, Damon A. Shreeve, Jean'ne M. TI Enhancing Energetic Properties and Sensitivity by Incorporating Amino and Nitramino Groups into a 1,2,4-Oxadiazole Building Block SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION LA English DT Article DE amines; detonation; energetic materials; nitramino groups; oxadiazoles ID PROMISING PROPERTIES; HIGH-DENSITY; PERFORMANCE; DERIVATIVES; FAMILY; SALTS; DESIGN; AZO AB A single nitrogen-rich heterocyclic ring with many energetic groups is expected to exhibit excellent detonation performance. We report an effective approach for the synthesis of 3-amino-5-nitramino-1,2,4-oxadiazole, which has nitramino and amino groups in the same building block. The single-crystal X-ray structure shows layered hydrogen-bonding pairs as well as the presence of a water molecule which ensure insensitivity. Through incorporation of a cation, the hydrazinium or hydroxylammonium salts exhibit good energetic performance and acceptable sensitivities. C1 [Tang, Yongxing; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA. [Gao, Haixiang] China Agr Univ, Dept Appl Chem, Beijing 100193, Peoples R China. [Mitchell, Lauren A.; Parrish, Damon A.] Naval Res Lab, Washington, DC 20375 USA. RP Shreeve, JM (reprint author), Univ Idaho, Dept Chem, Moscow, ID 83844 USA. EM jshreeve@uidaho.edu OI Mitchell, Lauren/0000-0002-1311-0108 FU ONR [NOOO14-12-1-0536]; DTRA [HDTRA 1-11-1-0034] FX We are grateful to ONR (NOOO14-12-1-0536) and DTRA (HDTRA 1-11-1-0034) for support of this work. NR 40 TC 8 Z9 8 U1 3 U2 29 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA POSTFACH 101161, 69451 WEINHEIM, GERMANY SN 1433-7851 EI 1521-3773 J9 ANGEW CHEM INT EDIT JI Angew. Chem.-Int. Edit. PD JAN 18 PY 2016 VL 55 IS 3 BP 1147 EP 1150 DI 10.1002/anie.201509985 PG 4 WC Chemistry, Multidisciplinary SC Chemistry GA DA8QF UT WOS:000368070000056 PM 26617389 ER PT J AU Cambazoglu, MK Blain, CA Smith, TA Linzell, RS AF Cambazoglu, Mustafa Kemal Blain, Cheryl Ann Smith, Travis A. Linzell, Robert S. TI Relationships between wind predictions and model resolution over coastal regions SO OCEAN ENGINEERING LA English DT Article DE Atmospheric predictions; COAMPS; Resolution; Wind speed; Turkish Straits System; Chesapeake Bay ID CHESAPEAKE BAY; CIRCULATION; VALIDATION; PRESSURE; CURRENTS; STRAIT; SYSTEM; FIELDS; EVENT; SEA AB The impact of resolution on wind predictions within regions of complex coastal geometry is evaluated using a quadruple nest of COAMPS (R) (27 km to 1 km) to find an optimal configuration of spatial and temporal resolution. Two regions, Turkish Straits System and Chesapeake Bay, are selected because of their diverse coastal environments, the availability of wind observations and to determine if the relationships between resolution and wind prediction accuracy would be valid for geographically different regions. The coarse resolution model successfully simulates the general trend of the surface wind variation, but cannot capture peak events accurately. Increased spatial resolution results in more accurate wind predictions. The coastline representation and land features impact friction over land and blocking of the winds and affect accuracy of wind predictions. 27-km resolution products lack important details over coastal waters and are not adequate to force high resolution ocean models. No evident improvement in accuracy is observed when increasing the resolution from 3-km to 1-km. An increase in frequency of the wind records from 3-hourly to hourly is required to capture frontal events with strong wind speeds and sharp gradients. Our analysis for both regions suggests the use of hourly atmospheric products at 3 km resolution for oceanic forcing purposes. (C) 2015 Elsevier Ltd. All rights reserved. C1 [Cambazoglu, Mustafa Kemal] Univ So Mississippi, Dept Marine Sci, 1020 Balch Blvd, Stennis Space Ctr, MS 39529 USA. [Blain, Cheryl Ann; Smith, Travis A.] Naval Res Lab, Div Oceanog, Ocean Dynam & Predict Branch, Stennis Space Ctr, MS 39529 USA. [Linzell, Robert S.] Vencore Serv & Solut Inc, Stennis Space Ctr, MS 39529 USA. RP Cambazoglu, MK (reprint author), Univ So Mississippi, Dept Marine Sci, 1020 Balch Blvd, Stennis Space Ctr, MS 39529 USA. EM Mustafa.Cambazoglu@usm.edu FU Office of Naval Research under the 6.2 NRL program "Development of a Multi-Scale Coupled Ocean Model System: Application to the Turkish Straits" FX This work is supported by the Office of Naval Research under the 6.2 NRL program "Development of a Multi-Scale Coupled Ocean Model System: Application to the Turkish Straits". The authors would like to thank Dr. Mikdat Kadioglu of Istanbul Technical University and Dr. Ewa Jarosz of Naval Research Laboratory for providing the measurement data, and to Mr. Kevin Roark in his assistance in data analysis. This paper is contribution number NRL/JA/7320-11-0855. NR 38 TC 0 Z9 0 U1 1 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0029-8018 J9 OCEAN ENG JI Ocean Eng. PD JAN 15 PY 2016 VL 112 BP 97 EP 116 DI 10.1016/j.oceaneng.2015.10.019 PG 20 WC Engineering, Marine; Engineering, Civil; Engineering, Ocean; Oceanography SC Engineering; Oceanography GA DD7HG UT WOS:000370093700009 ER PT J AU Lubrano, AL Andrews, B Hammond, M Collins, GE Rose-Pehrsson, S AF Lubrano, Adam L. Andrews, Benjamin Hammond, Mark Collins, Greg E. Rose-Pehrsson, Susan TI Analysis of ammonium nitrate headspace by on-fiber solid phase microextraction derivatization with gas chromatography mass spectrometry SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article DE Ammonium nitrate fuel oil; Solid phase microextraction; Butyl chloroformate; Gas chromatography-mass spectrometry ID THERMAL-DESORPTION INSTRUMENTATION; DEPOSITION CALIBRATION METHOD; VAPOR-TIME PROFILES; INTERNAL STANDARD; QUANTITATION; SENSOR; EXPLOSIVES AB A novel analytical method has been developed for the quantitation of trace levels of ammonia in the headspace of ammonium nitrate (AN) using derivatized solid phase microextraction (SPME) fibers with gas chromatography mass spectrometry (GC-MS). Ammonia is difficult to detect via direct injection into a GC-MS because of its low molecular weight and extreme polarity. To circumvent this issue, ammonia was derivatized directly onto a SPME fiber by the reaction of butyl chloroformate coated fibers with the ammonia to form butyl carbamate. A derivatized externally sampled internal standard (dESIS) method based upon the reactivity of diethylamine with unreacted butyl chloroformate on the SPME fiber to form butyl diethylcarbamate was established for the reproducible quantification of ammonia concentration. Both of these compounds are easily detectable and separable via GC-MS. The optimized method was then used to quantitate the vapor concentration of ammonia in the headspace of two commonly used improvised explosive device (IED) materials, ammonium nitrate fuel oil (ANFO) and ammonium nitrate aluminum powder (Ammonal), as well as identify the presence of additional fuel components within the headspace. Published by Elsevier B.V. C1 [Lubrano, Adam L.; Andrews, Benjamin] Nova Res Inc, Alexandria, VA 22308 USA. [Hammond, Mark; Collins, Greg E.; Rose-Pehrsson, Susan] US Naval Res Lab, Div Chem, Washington, DC 20375 USA. RP Rose-Pehrsson, S (reprint author), US Naval Res Lab, Div Chem, Washington, DC 20375 USA. EM susan.rosepehrsson@nrl.navy.mil FU U.S. Department of Homeland Security, Science and Technology Directorate, Homeland Security Advanced Research Projects Agency, Explosives Division FX The authors would like to thank Russell Jeffries for helpful discussions and insight, and acknowledge the U.S. Department of Homeland Security, Science and Technology Directorate, Homeland Security Advanced Research Projects Agency, Explosives Division, for funding this work. NR 19 TC 1 Z9 1 U1 10 U2 28 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 EI 1873-3778 J9 J CHROMATOGR A JI J. Chromatogr. A PD JAN 15 PY 2016 VL 1429 BP 8 EP 12 DI 10.1016/j.chroma.2015.11.054 PG 5 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA DC9RQ UT WOS:000369559100002 PM 26718189 ER PT J AU Smith, SH Marx, DE AF Smith, Stephen H. Marx, Donald E., Jr. TI De-facto marine protection from a Navy bombing range: Farallon De Medinilla, Mariana Archipelago, 1997 to 2012 SO MARINE POLLUTION BULLETIN LA English DT Article DE Marianas; Ordnance; De-facto; Preserve; Corals; Fishes ID AUSTRALIAN SCLERACTINIAN CORALS; CHAGOS ARCHIPELAGO; INDIAN-OCEAN; REEFS; ISLANDS; BIODIVERSITY; COMMONWEALTH; DISEASES; IMPACTS; GUAM AB Fourteen surveys were conducted at Farallon De Medinilla (a U.S. Department of Defense bombing range in the Mariana Archipelago) between 1997 and 2012; annual surveys were conducted from 1999 through 2012. There was no evidence that the condition of the biological resources assessed had changed, or been adversely impacted to a significant degree by the training activities being conducted there. Restricted access has resulted in a de-facto preserve effect and outweighs minor negative impacts from training. The health, abundance and biomass of fishes, corals and other marine resources are comparable to or superior to those in similar habitats at other locations within the Mariana Archipelago. Our research suggests that the greatest threat to FDM's marine resources is from fishermen, not military training activities. Published by Elsevier Ltd. C1 [Smith, Stephen H.; Marx, Donald E., Jr.] US Navy, Space & Naval Warfare Syst Ctr, Pacific Energy & Environm Sci Grp, Washington, DC USA. RP Smith, SH (reprint author), SPAWAR SSC, Code H56,2293 Victor Wharf Access Rd,Bldg 992, Pearl City, HI 96782 USA. EM Stephen.h.smith@navy.mil FU U.S. Navy Pacific Fleet Environmental Readiness Division FX We wish to thank U.S. Navy Pacific Fleet Environmental Readiness Division for providing the funding to conduct the scientific dive surveys as well as the preparation of the publication. NR 48 TC 0 Z9 0 U1 0 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0025-326X EI 1879-3363 J9 MAR POLLUT BULL JI Mar. Pollut. Bull. PD JAN 15 PY 2016 VL 102 IS 1 BP 187 EP 198 DI 10.1016/j.marpolbul.2015.07.023 PG 12 WC Environmental Sciences; Marine & Freshwater Biology SC Environmental Sciences & Ecology; Marine & Freshwater Biology GA DD7MU UT WOS:000370109500032 PM 26621576 ER PT J AU Fardad, S Das, S Salandrino, A Breckenfeld, E Kim, H Wu, J Hui, RQ AF Fardad, Shima Das, Susobhan Salandrino, Alessandro Breckenfeld, Eric Kim, Heungsoo Wu, Judy Hui, Rongqing TI All-optical short pulse translation through cross-phase modulation in a VO2 thin film SO OPTICS LETTERS LA English DT Article ID VANADIUM DIOXIDE; TRANSITION; DEVICES AB VO2 is a promising material for reconfigurable photonic devices due to the ultrafast changes in electronic and optical properties associated with its dielectric-to-metal phase transition. Based on a fiber-optic, pump-probe setup at 1550 nm wavelength window, and by varying the pump-pulse duration, we show that the material phase transition is primarily caused by the pump-pulse energy. For the first time, we demonstrate that the instantaneous optical phase modulation of probe during pump leading edge can be utilized to create short optical pulses at probe wavelength, through optical frequency discrimination. This circumvents the impact of long recovery time well known for the phase transition of VO2. (C) 2016 Optical Society of America C1 [Fardad, Shima; Das, Susobhan; Salandrino, Alessandro; Hui, Rongqing] Univ Kansas, Dept Elect Engn & Comp Sci, Lawrence, KS 66045 USA. [Breckenfeld, Eric; Kim, Heungsoo] Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Wu, Judy] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA. RP Hui, RQ (reprint author), Univ Kansas, Dept Elect Engn & Comp Sci, Lawrence, KS 66045 USA. EM rhui@ku.edu FU Army Research Office (ARO) [0910295, W911NF-16-1-0029]; National Science Foundation (NSF) [1105986, 1337737, 1508494] FX Army Research Office (ARO) (0910295, W911NF-16-1-0029); National Science Foundation (NSF) (1105986, 1337737, 1508494). NR 18 TC 0 Z9 0 U1 10 U2 36 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0146-9592 EI 1539-4794 J9 OPT LETT JI Opt. Lett. PD JAN 15 PY 2016 VL 41 IS 2 BP 238 EP 241 DI 10.1364/OL.41.000238 PG 4 WC Optics SC Optics GA DC2MF UT WOS:000369050100012 PM 26766683 ER PT J AU Anaya, J Rossi, S Alomari, M Kohn, E Toth, L Pecz, B Hobart, KD Anderson, TJ Feygelson, TI Pate, BB Kuball, M AF Anaya, Julian Rossi, Stefano Alomari, Mohammed Kohn, Erhard Toth, Lajos Pecz, Bela Hobart, Karl D. Anderson, Travis J. Feygelson, Tatyana I. Pate, Bradford B. Kuball, Martin TI Control of the in-plane thermal conductivity of ultra-thin nanocrystalline diamond films through the grain and grain boundary properties SO ACTA MATERIALIA LA English DT Article DE Thermal conductivity; Nanocrystalline diamond; Grain boundaries; Thin films ID POLYCRYSTALLINE CVD DIAMOND; CHEMICAL-VAPOR-DEPOSITION; LOW TEMPERATURES; SCATTERING; DIFFUSIVITY; SILICON; CONDUCTANCE; VACANCIES; CRYSTALS; PHONONS AB The in-plane thermal conductivity of polycrystalline diamond near its nucleation site, which is a key parameter to an efficient integration of diamond in modern high power AlGaN/GaN high electron mobility devices, has been studied. By controlling the lateral grain size evolution through the diamond growth conditions it has been possible to increase the in-plane thermal conductivity of the polycrystalline diamond film for a given thickness. Besides, the in-plane thermal conductivity has been found strongly inhomogeneous across the diamond films, being also possible to control this inhomogeneity by the growth conditions. The experimental results has been explained through a combined effect of the phonon mean free path confinement due the grain size and the quality of the grain/grain interfaces, showing that both effects evolve with the grain expansion and are dependant on the diamond growth conditions. This analysis shows how the thermal transport in the near nucleation region of polycrystalline diamond can be controlled, which ultimately opens the door to create ultra-thin layers with a engineered thermal conductivity, ranging from a few W/m K to a few hundreds of W/m K. (c) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 [Anaya, Julian; Kuball, Martin] Univ Bristol, Ctr Device Thermog & Reliabil, Bristol BS8 1TH, Avon, England. [Rossi, Stefano; Alomari, Mohammed; Kohn, Erhard] Univ Ulm, Inst Electron Devices & Circuits EBS, D-89069 Ulm, Germany. [Toth, Lajos; Pecz, Bela] Inst Tech Phys & Mat Sci, Energy Res Ctr, Budapest, Hungary. [Hobart, Karl D.; Anderson, Travis J.; Feygelson, Tatyana I.; Pate, Bradford B.] Naval Res Lab, Washington, DC 20375 USA. RP Anaya, J (reprint author), Univ Bristol, Ctr Device Thermog & Reliabil, Bristol BS8 1TH, Avon, England. EM J.anayaCalvo@bristol.ac.uk RI Pate, Bradford/B-4752-2010 OI Pate, Bradford/0000-0002-3288-2947 FU DARPA [FA8650-15-C-7517]; ONR Global [N62909-13-1-N210]; OTKA (Hungary) [K108869] FX We want to thank Prof. Erhard Kohn for the helpful technical support. This work is in part support supported by DARPA Contract No: FA8650-15-C-7517, monitored by Dr. Avram Bar Cohen and Dr. John Blevins supported by Dr. Joseph Maurer and Dr. Abirami Sivananthan. We also acknowledge financial support from ONR Global under the Award No. N62909-13-1-N210. B.P. and LT. also thanks the support of the OTKA (Hungary) Grant No. K108869. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of DARPA and ONRG. NR 73 TC 10 Z9 10 U1 20 U2 53 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 EI 1873-2453 J9 ACTA MATER JI Acta Mater. PD JAN 15 PY 2016 VL 103 BP 141 EP 152 DI 10.1016/j.actamat.2015.09.045 PG 12 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA DA2MU UT WOS:000367630500014 ER PT J AU Schoenecker, S Willett, P Bar-Shalom, Y AF Schoenecker, Steven Willett, Peter Bar-Shalom, Yaakov TI The Effect of K-Distributed Clutter on Trackability SO IEEE TRANSACTIONS ON SIGNAL PROCESSING LA English DT Article DE Extreme value; K-distribution; ML-PMHT; multistatic sonar; tracking; thresholds; trackability ID EXTREME-VALUE ANALYSIS; ML-PMHT; DATA ASSOCIATION; TRACKING; REVERBERATION; TARGETS; PDA AB In the field of target tracking, a tremendous amount of work has been done on designing and implementing algorithms. However, much less work has been performed on analyzing whether, for a given target in a given environment, tracking is possible at all. Our recent work developed a framework to answer just that. But the only clutter amplitude model it could process was Rayleigh. On the other hand, the K-distribution, much heavier-tailed than Rayleigh, has recently been posited to more accurately describe "real" sonar clutter. In this paper, we incorporate K-distributed clutter into the trackability framework, and the differences are significant. We find we answer the question, "When tracking a target, does using amplitude actually help?" C1 [Schoenecker, Steven] Naval Undersea Warfare Ctr, Newport, RI 02841 USA. [Willett, Peter; Bar-Shalom, Yaakov] Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA. RP Schoenecker, S (reprint author), Naval Undersea Warfare Ctr, Newport, RI 02841 USA. EM steven.schoenecker@navy.mil; willett@engr.uconn.edu; ybs@engr.uconn.edu FU ONR grants [N00014-10-1-0029, N00014-13-1-0231]; ARO grant [W911NF-06-1-0467] FX This work was supported by ONR grants N00014-10-1-0029, N00014-13-1-0231, and ARO grant W911NF-06-1-0467. NR 36 TC 0 Z9 0 U1 2 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1053-587X EI 1941-0476 J9 IEEE T SIGNAL PROCES JI IEEE Trans. Signal Process. PD JAN 15 PY 2016 VL 64 IS 2 BP 475 EP 484 DI 10.1109/TSP.2015.2478745 PG 10 WC Engineering, Electrical & Electronic SC Engineering GA CZ7AX UT WOS:000367253400015 ER PT J AU Gerke, TL Little, BJ Maynard, JB AF Gerke, Tammie L. Little, Brenda J. Maynard, J. Barry TI Manganese deposition in drinking water distribution systems SO SCIENCE OF THE TOTAL ENVIRONMENT LA English DT Article DE Manganese; Drinking water; Chlorine; Chloramine; Micro-XANES; Micro-XRF ID CORROSION SCALES; OXIDE; SORPTION; LEAD; SPECIATION; RELEASE; METALS; GROWTH; MODEL AB This study provides a physicochemical assessment of manganese deposits on brass and lead components from two fully operational drinking water distributions systems. One of the systems was maintained with chlorine; the other, with secondary chloramine disinfection. Synchrotron-based in-situ micro X-ray adsorption near edge structure was used to assess the mineralogy. In-situ micro X-ray fluorescence mapping was used to demonstrate the spatial relationships between manganese and potentially toxic adsorbed metal ions. The Mn deposits ranged in thickness from 0.01 to 400 mu m. They were composed primarily of Mn oxides/oxhydroxides, birnessite (Mn3+ and Mn4+) and hollandite (Mn2+ and Mn4+), and a Mn silicate, braunite (Mn2+ and Mn4+), in varying proportions. Iron, chromium, and strontium, in addition to the alloying elements lead and copper, were colocated within manganese deposits. With the exception of iron, all are related to specific health issues and are of concern to the U.S. Environmental Protection Agency (U.S. EPA). The specific properties of Mn deposits, i.e., adsorption of metals ions, oxidation of metal ions and resuspension are discussed with respect to their influence on drinking water quality. (C) 2015 Elsevier B.V. All rights reserved. C1 [Gerke, Tammie L.; Maynard, J. Barry] Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA. [Little, Brenda J.] Naval Res Lab, Stennis Space Ctr, MS 39529 USA. RP Gerke, TL (reprint author), Miami Univ, Dept Geol & Environm Earth Sci, Middletown, OH 45042 USA. EM Tammie.Gerke@miamioh.edu; brenda.little@nrlssc.navy.mil; maynarjb@ucmail.uc.edu FU U.S. DOE [DE-AC02-06CH11357] FX Sector 20 facilities at the Advanced Photon Source, and research at these facilities, are supported by the US Department of Energy Basic Energy Sciences, Canadian Light Source and its funding partners, the University of Washington, and the Advanced Photon Source. Use of the Advanced Photon Source, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science by Argonne National Laboratory, was supported by U.S. DOE under Contract No, DE-AC02-06CH11357. We thank M. K. DeSantis for photographs of pipe samples and Kirk Scheckel and Steve Held for Mn standards. NR 40 TC 5 Z9 5 U1 6 U2 55 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0048-9697 EI 1879-1026 J9 SCI TOTAL ENVIRON JI Sci. Total Environ. PD JAN 15 PY 2016 VL 541 BP 184 EP 193 DI 10.1016/j.scitotenv.2015.09.054 PG 10 WC Environmental Sciences SC Environmental Sciences & Ecology GA CW8ZY UT WOS:000365289300022 PM 26409148 ER PT J AU Avramov-Zamurovic, S Nelson, C Guth, S Korotkova, O Malek-Madani, R AF Avramov-Zamurovic, S. Nelson, C. Guth, S. Korotkova, O. Malek-Madani, R. TI Experimental study of electromagnetic Bessel-Gaussian Schell Model beams propagating in a turbulent channel SO OPTICS COMMUNICATIONS LA English DT Article DE Spatially partially coherent laser beams; Scintillation index; Propagation of electromagnetic laser beams in turbulence ID RING-SHAPED BEAMS; PARTIALLY COHERENT; ATMOSPHERIC-TURBULENCE; OPTICAL COMMUNICATION; INTENSITY FLUCTUATIONS; SCINTILLATION; POLARIZATION AB We report on experimental generation of Electromagnetic Bessel-Gaussian Schell-Model [EBGSM] beams via incoherent superposition of two mutually orthogonal electric field components, both originated from a laser source, whose phases are spatially modified by two nematic liquid crystal Spatial Light Modulators. The EBGSM beam is then passed through a weakly fluctuating turbulent channel and examined for contrast in its fluctuating intensity. It is demonstrated that after passing through turbulence the electromagnetic beam exhibits reduction in the scintillation index on the order of 50%, as compared with that for an equivalent scalar beam, in strong agreement with recent theoretical predictions. Published by Elsevier B.V. C1 [Avramov-Zamurovic, S.] US Naval Acad, Weap & Syst Engn, Annapolis, MD 21402 USA. [Nelson, C.] US Naval Acad, Elect & Comp Engn Dept, Annapolis, MD 21402 USA. [Guth, S.; Malek-Madani, R.] US Naval Acad, Dept Math, Annapolis, MD 21402 USA. [Korotkova, O.] Univ Miami, Dept Phys, Coral Gables, FL 33146 USA. RP Avramov-Zamurovic, S (reprint author), US Naval Acad, Weap & Syst Engn, 105 Maryland Ave, Annapolis, MD 21402 USA. EM avramov@usna.edu FU US ONR Grant [N0001414-WX-00267, N0001414WX00197, N001614WX30023]; Air Force Office of Scientific Research (AFOSR) Grant [FA9550-12-1-0449]; Office of Naval Research (ONR) Grant [N00014-15-1-2350] FX S. Avramov-Zamurovic and S. Guth are supported by US ONR Grant: N0001414-WX-00267. R. Malek-Madani is supported by US ONR Grant N0001414WX00197. C. Nelson' is supported by US ONR grant N001614WX30023. O. Korotkova is supported by the Air Force Office of Scientific Research (AFOSR) Grant FA9550-12-1-0449; and the Office of Naval Research (ONR) Grant N00014-15-1-2350. NR 34 TC 5 Z9 5 U1 5 U2 23 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 EI 1873-0310 J9 OPT COMMUN JI Opt. Commun. PD JAN 15 PY 2016 VL 359 BP 207 EP 215 DI 10.1016/j.optcom.2015.09.078 PG 9 WC Optics SC Optics GA CV5RB UT WOS:000364327600032 ER PT J AU Tan, YM Cervantes, O Nam, S Molitoris, JD Hooper, JP AF Tan, Yi Ming Cervantes, Octavio Nam, SeanWoo Molitoris, John D. Hooper, Joseph P. TI Dynamic fragmentation of cellular, ice-templated alumina scaffolds SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID BRITTLE MATERIALS; CERAMICS; COMPOSITES; FABRICATION AB We examine the dynamic failure of ice-templated freeze-cast alumina scaffolds that are being considered as biomimetic hierarchical structures. Three porosities of alumina freeze-cast structures were fabricated, and a systematic variation in microstructural properties such as lamellar width and thickness was observed with changing porosity. Dynamic impact tests were performed in a light-gas gun to examine the failure properties of these materials under high strain-rate loading. Nearly complete delamination was observed following impact, along with characteristic cracking across the lamellar width. Average fragment size decreases with increasing porosity, and a theoretical model was developed to explain this behavior based on microstructural changes. Using an energy balance between kinetic, strain, and surface energies within a single lamella, we are able to accurately predict the characteristic fragment size using only standard material properties of bulk alumina. (C) 2016 AIP Publishing LLC. C1 [Tan, Yi Ming; Nam, SeanWoo; Hooper, Joseph P.] Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA. [Cervantes, Octavio; Molitoris, John D.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Hooper, JP (reprint author), Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA. EM jphooper@nps.edu FU Defense Threat Reduction Agency; U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX This work was funded by the Defense Threat Reduction Agency under the supervision of Bill Wilson. Freeze casting work at LLNL was performed through the AMEA collaboration fostered by the LLNL National Security Office. All LLNL work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344. Lawrence Livermore National Security, LLC. NR 32 TC 1 Z9 1 U1 8 U2 17 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-8979 EI 1089-7550 J9 J APPL PHYS JI J. Appl. Phys. PD JAN 14 PY 2016 VL 119 IS 2 AR 024901 DI 10.1063/1.4939702 PG 8 WC Physics, Applied SC Physics GA DC5UA UT WOS:000369284800045 ER PT J AU Alnemrat, S Mayo, DH DeCarlo, S Hooper, JP AF Alnemrat, Sufian Mayo, Dennis H. DeCarlo, Samantha Hooper, Joseph P. TI Growth of metalloid aluminum clusters on graphene vacancies SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DISPROPORTIONATION; NANOCLUSTERS; GRAPHITE; ENERGY; CARBON; AL; PD AB Ab initio simulations are used to show that graphene vacancy sites may offer a means of templated growth of metalloid aluminum clusters from their monohalide precursors. We present density functional theory and ab initio molecular dynamics simulations of the aluminum halide AlCl interacting with a graphene surface. Unlike a bare Al adatom, AlCl physisorbs weakly on vacancy-free graphene with little charge transfer and no hybridization with carbon orbitals. The barrier for diffusion of AlCl along the surface is negligible. Covalent bonding is seen only with vacancies and results in strong chemisorption and considerable distortion of the nearby lattice. Car-Parrinello molecular dynamics simulations of AlCl liquid around a graphene single vacancy show spontaneous metalloid cluster growth via a process of repeated insertion reactions. This suggests a means of templated cluster nucleation and growth on a carbon substrate and provides some confirmation for the role of a trivalent aluminum species in nucleating a ligated metalloid cluster from AlCl and AlBr solutions. (C) 2016 AIP Publishing LLC. C1 [Alnemrat, Sufian; Hooper, Joseph P.] US Navy, Postgrad Sch, Monterey, CA 93943 USA. [Mayo, Dennis H.] US Navy, Ctr Surface Warfare, Indian Head, MD 20640 USA. [DeCarlo, Samantha] Univ Maryland, Dept Chem, College Pk, MD 20742 USA. RP Hooper, JP (reprint author), US Navy, Postgrad Sch, Monterey, CA 93943 USA. EM jphooper@nps.edu OI alnemrat, sufian/0000-0002-5143-4066 FU Office of Naval Research Multi-University Research Initiative on Metalloid Cluster Networks [ONR-N00014-15-1-2681]; National Research Council; DTRA Basic Research FX This work was funded by the Office of Naval Research Multi-University Research Initiative on Metalloid Cluster Networks under Grant No. ONR-N00014-15-1-2681 (program directors Clifford Bedford and Kenny Lipkowitz). This research was performed while one of the authors (S.A.) held a National Research Council Research Associateship Award at Naval Postgraduate School. S.D. and D.M. acknowledge DTRA Basic Research for support. NR 49 TC 0 Z9 0 U1 2 U2 11 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD JAN 14 PY 2016 VL 144 IS 2 AR 024703 DI 10.1063/1.4939594 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA DB6IO UT WOS:000368618400037 PM 26772583 ER PT J AU Casalini, R Roland, CM AF Casalini, R. Roland, C. M. TI The "anomalous" dynamics of decahyroisoquinoline revisited SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID GLASS-FORMING LIQUIDS; DIELECTRIC-RELAXATION; SUPERCOOLED LIQUIDS; SECONDARY-MODES; DECAHYDROISOQUINOLINE; TRANSITION; PRESSURE; POLYMERS; DENSITY; TIME AB Decahydroisoquinoline (DHIQ) appears to be a unique material-the only non-associated, simple liquid with dynamics deviating from density scaling. To examine whether this anomaly is real, the density, rho, of DHIQ was measured at temperatures, T, as low as 214 K and pressures up to similar to 1.2 GPa. This enabled the equation of state (EoS) to be determined, without extrapolation, over the range of thermodynamic conditions for which the relaxation times had been reported. Using this less ambiguous EoS, we find that within the precision of the available relaxation times, the latter are a function of T/rho(3.9), contrary to previous reports. Thus, the behavior of DHIQ is unexceptional; similar to every non-associated liquid tested to date, its dynamics comply with density scaling. C1 [Casalini, R.; Roland, C. M.] Naval Res Lab, Div Chem, Washington, DC 20375 USA. RP Casalini, R (reprint author), Naval Res Lab, Div Chem, Washington, DC 20375 USA. FU Office of Naval Research FX We thank M. Paluch of Silesian University for kindly providing relaxation data for DHIQ in digital form and D. Fragiadakis for the analysis software (grafitylabs.com). This work was supported by the Office of Naval Research. NR 35 TC 3 Z9 3 U1 4 U2 9 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD JAN 14 PY 2016 VL 144 IS 2 AR 024502 DI 10.1063/1.4940034 PG 3 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA DB6IO UT WOS:000368618400034 PM 26772580 ER PT J AU Rittenhouse, ST Wray, A Johnson, BL AF Rittenhouse, Seth T. Wray, Andrew Johnson, B. L. TI Hyperspherical approach to a three-boson problem in two dimensions with a magnetic field SO PHYSICAL REVIEW A LA English DT Article ID GENERAL-ORDER COLLISIONS; 2-DIMENSIONAL ELECTRONS; INTERACTING ELECTRONS; SMALL CLUSTERS; 3-BODY HALOS; QUANTUM DOTS; TERTIARY AB We examine a system of three-bosons confined to two dimensions in the presence of a perpendicular magnetic field within the framework of the adiabatic hyperspherical method. For the case of zero-range, regularized pseudopotential interactions, we find that the system is nearly separable in hyperspherical coordinates and that, away from a set of narrow avoided crossings, the full energy eigenspectrum as a function of the two-dimensional (2D) s-wave scattering length is well described by ignoring coupling between adiabatic hyperradial potentials. In the case of weak attractive or repulsive interactions, we find the lowest three-body energy states exhibit even-odd parity oscillations as a function of total internal 2D angular momentum and that for weak repulsive interactions, the universal lowest energy interacting state has an internal angular momentum of M = 3. With the inclusion of repulsive higher angular momentum we surmise that the origin of a set of "magic number" states (states with anomalously low energy) might emerge as the result of a combination of even-odd parity oscillations and the pattern of degeneracy in the noninteracting lowest Landau level states. C1 [Rittenhouse, Seth T.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA. [Rittenhouse, Seth T.; Wray, Andrew; Johnson, B. L.] Western Washington Univ, Dept Phys & Astron, Bellingham, WA 98225 USA. RP Rittenhouse, ST (reprint author), US Naval Acad, Dept Phys, Annapolis, MD 21402 USA. FU NSF [PHY-1516337, PHY-1516421]; Cottrell College Science Award through the Research Corporation for Scientific Advancement FX The authors would like to thank B. M. Peden, D. Blume, and J. P. D'Incao for helpful discussions and insights. S.T.R. acknowledges support from NSF Grants No. PHY-1516337 and No. PHY-1516421 and from a Cottrell College Science Award through the Research Corporation for Scientific Advancement. NR 39 TC 1 Z9 1 U1 2 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 EI 1094-1622 J9 PHYS REV A JI Phys. Rev. A PD JAN 14 PY 2016 VL 93 IS 1 AR 012511 DI 10.1103/PhysRevA.93.012511 PG 11 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA DB1TC UT WOS:000368290900009 ER PT J AU Becker, CR Prokes, SM Love, CT AF Becker, Collin R. Prokes, S. M. Love, Corey T. TI Enhanced Lithiation Cycle Stability of ALD-Coated Confined a-Si Microstructures Determined Using In Situ AFM SO ACS APPLIED MATERIALS & INTERFACES LA English DT Article DE silicon; lithium ion; atomic force microscopy; in situ; battery ID LITHIUM-ION BATTERIES; ATOMIC LAYER DEPOSITION; AMORPHOUS-SILICON; ELECTROLYTE ADDITIVES; VINYLENE CARBONATE; FORCE MICROSCOPY; POUCH CELLS; ANODES; PERFORMANCE; NANOPARTICLES AB Microfabricated amorphous silicon (alpha-Si) pits similar to 4 mu m in diameter and 100 nm thick were fabricated to be partially confined in a nickel (Ni) current collector. Corresponding unconfined pillars were also fabricated. The samples were coated with 1.5, 3, or 6 nm of Al2O3 ALD. These samples were tested in electrolytes of 3:7 by weight ethylene carbonate:ethyl methyl carbonate (EC:EMC) with 1.2 M LiPF6 salt with and without 2% fluoroethylene carbonate (FEC) and in a pure FEC electrolyte with 10 wt % LiPF6. The samples were imaged with an atomic force microscope during electrochemical cycling to evaluate morphology evolution and solid electrolyte interphase (SEI) formation. The partially confined alpha-Si structures had superior cycle efficiency relative to the unconfined alpha-Si pillars. Additionally, samples with 3 nm of ALD achieved higher charge capacity and enhanced cycle life compared to samples without ALD, demonstrated thinner SEI formation, and after 10 cycles at a 1 C rate remained mostly intact and had actually decreased in diameter. Finally, the samples with 3 nm of ALD had better capacity retention in the baseline 3:7 EC:EMC than in either of the FEC containing electrolytes. C1 [Becker, Collin R.] US Army, Res Lab, Electrochem Branch, 2800 Powder Mill Rd, Adelphi, MD 20783 USA. [Prokes, S. M.] US Navy, Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA. [Love, Corey T.] US Navy, Res Lab, Div Chem, Washington, DC 20375 USA. RP Becker, CR (reprint author), US Army, Res Lab, Electrochem Branch, 2800 Powder Mill Rd, Adelphi, MD 20783 USA. EM Collin.r.becker.civ@mail.mil FU US Army Research Lab; Nanoscience Institute at the US Naval Research Lab FX We are grateful for financial support from the US Army Research Lab and Nanoscience Institute at the US Naval Research Lab. We thank John Moulder from PHI for the XPS measurements and Sam Delp from the US Army Research Lab for providing electrolytes. NR 37 TC 5 Z9 5 U1 19 U2 65 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1944-8244 J9 ACS APPL MATER INTER JI ACS Appl. Mater. Interfaces PD JAN 13 PY 2016 VL 8 IS 1 BP 530 EP 537 DI 10.1021/acsami.5b09544 PG 8 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA DB5OH UT WOS:000368563000064 PM 26672626 ER PT J AU McCreary, KM Hanbicki, AT Jernigan, GG Culbertson, JC Jonker, BT AF McCreary, Kathleen M. Hanbicki, Aubrey T. Jernigan, Glenn G. Culbertson, James C. Jonker, Berend T. TI Synthesis of Large-Area WS2 monolayers with Exceptional Photoluminescence SO SCIENTIFIC REPORTS LA English DT Article ID CHEMICAL-VAPOR-DEPOSITION; MONO LAYER MOS2; MOLYBDENUM-DISULFIDE; SINGLE-LAYER; GRAIN-BOUNDARY; HIGH-QUALITY; GROWTH; FILMS; WSE2; SEMICONDUCTOR AB Monolayer WS2 offers great promise for use in optical devices due to its direct bandgap and high photoluminescence intensity. While fundamental investigations can be performed on exfoliated material, large-area and high quality materials are essential for implementation of technological applications. In this work, we synthesize monolayer WS2 under various controlled conditions and characterize the films using photoluminescence, Raman and x-ray photoelectron spectroscopies. We demonstrate that the introduction of hydrogen to the argon carrier gas dramatically improves the optical quality and increases the growth area of WS2, resulting in films exhibiting mm(2) coverage. The addition of hydrogen more effectively reduces the WO3 precursor and protects against oxidative etching of the synthesized monolayers. The stoichiometric WS2 monolayers synthesized using Ar + H-2 carrier gas exhibit superior optical characteristics, with photoluminescence emission full width half maximum (FWHM) values below 40 meV and emission intensities nearly an order of magnitude higher than films synthesized in a pure Ar environment. C1 [McCreary, Kathleen M.; Hanbicki, Aubrey T.; Jernigan, Glenn G.; Culbertson, James C.; Jonker, Berend T.] Naval Res Lab, Washington, DC 20375 USA. RP McCreary, KM (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM kathleen.mccreary@nrl.navy.mil FU NRL; NRL Nanoscience Institute; Air Force Office of Scientific Research [OARD 14IOA018-134141]; National Research Council FX Core programs at NRL and the NRL Nanoscience Institute supported this work. This work was supported in part by the Air Force Office of Scientific Research under contract number OARD 14IOA018-134141. This research was performed while K.M.M held a National Research Council Research Associateship Award at NRL. The authors acknowledge use of facilities in the NRL Nanoscience Institute and thank David Zapotok and Dean St. Amand for technical support. NR 45 TC 8 Z9 8 U1 26 U2 94 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 2045-2322 J9 SCI REP-UK JI Sci Rep PD JAN 13 PY 2016 VL 6 AR 19159 DI 10.1038/srep19159 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA DC2QI UT WOS:000369061000001 PM 26758908 ER PT J AU Martinez-Miranda, LJ Taylor, JW Kurihara, LK AF Martinez-Miranda, Luz J. Taylor, Jefferson W. Kurihara, Lynn K. TI Interfacial Structure of a Liquid Crystal/Nanoparticle Nanocomposite Studied by X-ray Scattering: Indirect Evidence for the Role of Faceting of the Nanoparticles SO LANGMUIR LA English DT Article ID HYBRID SOLAR-CELLS; PERFORMANCE IMPROVEMENT; ZNO NANOPARTICLES; PHASE-SEPARATION; CRYSTAL DEVICE; MORPHOLOGY; MICROSTRUCTURE; ORGANIZATION; MONOLAYERS; BEHAVIOR AB The interfacial structure in a liquid crystal/nanoparticle nanocomposite is dictated by the type of nanoparticle and its functionalization compound. Nanocomposites consisting of smectic liquid crystals and nanoparticles have been studied for their applications in devices such as photo-voltaics and to model biological devices. With the use of a model system, this paper presents evidence of an interfacial structure close to the vicinity of the nanoparticles that is more disordered than that of the bulk liquid crystal but is still in the smectic phase, and it seems to follow the faceting of the structure the nanoparticles adopt when they coalesce or recluster after the liquid crystal is added. C1 [Martinez-Miranda, Luz J.] Univ Maryland, Energy Res Ctr, Dept Mat Sci & Engn, College Pk, MD 20742 USA. [Taylor, Jefferson W.] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA. [Kurihara, Lynn K.] US Naval Res Lab, Washington, DC 20375 USA. RP Martinez-Miranda, LJ (reprint author), NEXTFED, 8320 Old Courthouse Rd Suite 200, Vienna, VA 22182 USA. EM ljmm@umd.edu FU NSF [NSF-DMR-0906433] FX This work was supported by NSF Grant NSF-DMR-0906433. We thank Prof. L. Hirst of the University of California at Merced and Dr. Chen Hui Zhu from Lawrence Berkeley Laboratory, Berkeley, for useful discussions. NR 53 TC 1 Z9 1 U1 2 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD JAN 12 PY 2016 VL 32 IS 1 BP 239 EP 246 DI 10.1021/acs.langmuir.5b03255 PG 8 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA DB2ES UT WOS:000368321700028 PM 26638982 ER PT J AU Kurata, N Vella, K Hamilton, B Shivji, M Soloviev, A Matt, S Tartar, A Perrie, W AF Kurata, Naoko Vella, Kate Hamilton, Bryan Shivji, Mahmood Soloviev, Alexander Matt, Silvia Tartar, Aurelien Perrie, William TI Surfactant-associated bacteria in the near-surface layer of the ocean SO SCIENTIFIC REPORTS LA English DT Article ID MARINE BACTERIUM; SEA; MICROLAYER; EXOPOLYSACCHARIDE; MICROORGANISMS; BACTERIONEUSTON; BIOSURFACTANTS; INTERFACE; SEQUENCES; GULF AB Certain marine bacteria found in the near-surface layer of the ocean are expected to play important roles in the production and decay of surface active materials; however, the details of these processes are still unclear. Here we provide evidence supporting connection between the presence of surfactantassociated bacteria in the near-surface layer of the ocean, slicks on the sea surface, and a distinctive feature in the synthetic aperture radar (SAR) imagery of the sea surface. From DNA analyses of the in situ samples using pyrosequencing technology, we found the highest abundance of surfactantassociated bacterial taxa in the near-surface layer below the slick. Our study suggests that production of surfactants by marine bacteria takes place in the organic-rich areas of the water column. Produced surfactants can then be transported to the sea surface and form slicks when certain physical conditions are met. This finding has potential applications in monitoring organic materials in the water column using remote sensing techniques. Identifying a connection between marine bacteria and production of natural surfactants may provide a better understanding of the global picture of biophysical processes at the boundary between the ocean and atmosphere, air-sea exchange of greenhouse gases, and production of climate-active marine aerosols. C1 [Kurata, Naoko; Vella, Kate; Hamilton, Bryan; Shivji, Mahmood; Soloviev, Alexander] Nova SE Univ, Halmos Coll Nat Sci & Oceanog, Dania, FL USA. [Soloviev, Alexander] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA. [Matt, Silvia] Naval Res Lab, Stennis Space Ctr, MS USA. [Tartar, Aurelien] Nova SE Univ, Dept Biol Sci, Ft Lauderdale, FL 33314 USA. [Perrie, William] Fisheries & Oceans Canada, Bedford Inst Oceanog, Sherbrooke, PQ, Canada. RP Kurata, N (reprint author), Nova SE Univ, Halmos Coll Nat Sci & Oceanog, Dania, FL USA. EM kurata.naoko.jp@gmail.com; soloviev@nova.edu FU SCOR; NSU OC project; NRL; National Science Foundation (NSF); NSU OC Kevin Kohler Memorial Scholarship Research Fund; GoMRI project FX The work is a part of the SCOR "Sea Surface Microlayer" working group (WG 141) sponsored by SCOR and the National Science Foundation (NSF). This is also a follow up on the COST Action 735 meeting "Surfactants and the Microlayer Gas Exchange", 18-19 March 2009, Plymouth, UK organized by Peter Liss (UEA) and attended by one of the authors (Soloviev). We thank Cristopher Garbe (Heidelberg University) for important discussion regarding this research. Chris Maingot, Jenny Fenton and Brian Ettinger (NSU OC) helped with the sample collection. We acknowledge James Peever, and Kaoru Kurata for manuscript editing assistance and for preparation of graphic images. We acknowledge the Canadian Space Agency for providing SAR satellite imagery. Biao Zhang (BIO) coordinated RADARSAT 2 acquisitions. David Moraga Amador (ICBR/UF) conducted the 454 DNA sequencing of microlayer samples. We thank Cayla Dean for important comments and editing the manuscript. The work was supported by the NSU OC project, "Hydrodynamics and Remote Sensing of Far Wakes of Ships", the NSU OC Kevin Kohler Memorial Scholarship Research Fund, and the GoMRI project "Consortium for advanced research on transport of hydrocarbon in the environment" (PI: Tamay Ozgokmen, UM RSMAS). S. Matt was supported by a NRL Karle Fellowship. NR 47 TC 0 Z9 0 U1 4 U2 30 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 2045-2322 J9 SCI REP-UK JI Sci Rep PD JAN 12 PY 2016 VL 6 AR 19123 DI 10.1038/srep19123 PG 8 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA DA9EJ UT WOS:000368110800001 PM 26753514 ER PT J AU Polito, V Reep, JW Reeves, KK Simoes, PJA Dudik, J Del Zanna, G Mason, HE Golub, L AF Polito, V. Reep, J. W. Reeves, K. K. Simoes, P. J. A. Dudik, J. Del Zanna, G. Mason, H. E. Golub, L. TI SIMULTANEOUS IRIS AND HINODE/EIS OBSERVATIONS AND MODELING OF THE 2014 OCTOBER 27 X2.0. CLASS FLARE SO ASTROPHYSICAL JOURNAL LA English DT Article DE Sun: chromosphere; Sun: flares; techniques: spectroscopic ID ULTRAVIOLET IMAGING SPECTROMETER; CORONAL DIAGNOSTIC SPECTROMETER; LOOP RADIATIVE HYDRODYNAMICS; QUASI-SEPARATRIX LAYERS; X-RAY OBSERVATIONS; SOLAR-FLARES; CHROMOSPHERIC EVAPORATION; IMPULSIVE PHASE; ATOMIC DATABASE; ACTIVE-REGION AB We present a study of the X2-class flare which occurred on 2014 October 27 and was observed with the Interface Region Imaging Spectrograph (IRIS) and the EUV Imaging Spectrometer (EIS) on board the Hinode satellite. Thanks to the high cadence and spatial resolution of the IRIS and EIS instruments, we are able to compare simultaneous observations of the Fe XXI 1354.08 angstrom. and Fe XXIII 263.77 angstrom high-temperature emission (greater than or similar to 10 MK) in the flare ribbon during the chromospheric evaporation phase. We find that IRIS observes completely blueshifted Fe XXI line profiles, up to 200 km s(-1) during the rise phase of the flare, indicating that the site of the plasma upflows is resolved by IRIS. In contrast, the Fe XXIII line is often asymmetric, which we interpret as being due to the lower spatial resolution of EIS. Temperature estimates from SDO/AIA and Hinode/XRT show that hot emission (log(T[K]) > 7.2) is first concentrated at the footpoints before filling the loops. Density-sensitive lines from IRIS and EIS give estimates of electron number density of greater than or similar to 10(12) cm(-3) in the transition region lines and 10(10) cm(-3) in the coronal lines during the impulsive phase. In order to compare the observational results against theoretical predictions, we have run a simulation of a flare loop undergoing heating using the HYDRAD 1D hydro code. We find that the simulated plasma parameters are close to the observed values that are obtained with IRIS, Hinode, and AIA. These results support an electron beam heating model rather than a purely thermal conduction model as the driving mechanism for this flare. C1 [Polito, V.; Reep, J. W.; Del Zanna, G.; Mason, H. E.] Univ Cambridge, DAMTP, CMS, Wilberforce Rd, Cambridge CB3 0WA, England. [Reep, J. W.] Naval Res Lab, Natl Res Council Postdoc Program, Washington, DC 20375 USA. [Reeves, K. K.; Golub, L.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 01238 USA. [Simoes, P. J. A.] Univ Glasgow, SUPA Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland. [Dudik, J.] Acad Sci Czech Republic, Inst Astron, CS-25165 Ondrejov, Czech Republic. RP Polito, V (reprint author), Univ Cambridge, DAMTP, CMS, Wilberforce Rd, Cambridge CB3 0WA, England. RI Dudik, Jaroslav/D-5876-2013; OI Reep, Jeffrey/0000-0003-4739-1152; Reeves, Katharine/0000-0002-6903-6832; Golub, Leon/0000-0001-9638-3082 FU Isaac Newton Studentship; Cambridge Trust; IRIS team at Harvard-Smithsonian Centre for Astrophysics; RS Newton Alumni Programme; NASA; STFC; Lockheed-Martin [8100002705]; European Community's Seventh Framework Programme [606862]; Norwegian Space Center (NSC, Norway) through an ESA PRODEX contract FX V.P. acknowledges support from the Isaac Newton Studentship, the Cambridge Trust, the IRIS team at Harvard-Smithsonian Centre for Astrophysics and the RS Newton Alumni Programme. This research was performed while J.W.R. held an NRC Research Associateship award at the US Naval Research Laboratory with support from NASA, and previously a PDRA at the University of Cambridge. H.E.M. and G.D.Z. acknowledge support from the STFC and the RS Newton Alumni Programme. L.G. and K.R. are supported by contract 8100002705 from Lockheed-Martin to SAO. P.J.A.S. acknowledges support from the European Community's Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 606862 (F-CHROMA). J.D. acknowledges support from the RS Newton Alumni Programme.r IRIS is a NASA small explorer mission developed and operated by LMSAL with mission operations executed at NASA Ames Research center and major contributions to downlink communications funded by the Norwegian Space Center (NSC, Norway) through an ESA PRODEX contract. Hinode is a Japanese mission developed and launched by ISAS/JAXA, with NAOJ as domestic partner and NASA and STFC (UK) as international partners. It is operated by these agencies in cooperation with ESA and NSC (Norway). AIA data are courtesy of NASA/SDO and the respective science teams. CHIANTI is a collaborative project involving researchers at the universities of Cambridge (UK), George Mason, and Michigan (USA). NR 112 TC 11 Z9 11 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JAN 10 PY 2016 VL 816 IS 2 AR 89 DI 10.3847/0004-637X/816/2/89 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA DB0ZV UT WOS:000368238500041 ER PT J AU Wood, BE Howard, RA Linton, MG AF Wood, Brian E. Howard, Russell A. Linton, Mark G. TI IMAGING PROMINENCE ERUPTIONS OUT TO 1 AU SO ASTROPHYSICAL JOURNAL LA English DT Article DE interplanetary medium; solar wind; Sun: coronal mass ejections (CMEs); Sun: filaments, prominences ID CORONAL MASS EJECTION; MAGNETIC-FLUX ROPE; JUNE 7 ERUPTION; EMPIRICAL RECONSTRUCTION; INNER HELIOSPHERE; RETURNING PLASMA; LARGE DISTANCES; ACTIVE REGIONS; SUN; MORPHOLOGY AB Views of two bright prominence eruptions trackable all the way to 1 AU are here presented, using the heliospheric imagers on the Solar TErrestrial RElations Observatory (STEREO) spacecraft. The two events first erupted from the Sun on 2011. June. 7 and 2012. August. 31, respectively. Only these two examples of clear prominence eruptions observable this far from the Sun could be found in the STEREO image database, emphasizing the rarity of prominence eruptions this persistently bright. For the 2011. June event, a time-dependent 3D reconstruction of the prominence structure is made using point-by-point triangulation. This is not possible for the August event due to a poor viewing geometry. Unlike the coronal mass ejection (CME) that accompanies it, the 2011. June prominence exhibits little deceleration from the Sun to 1 AU, as a consequence moving upwards within the CME. This demonstrates that prominences are not necessarily tied to the CME's magnetic structure far from the Sun. A mathematical framework is developed for describing the degree of self-similarity for the prominence's expansion away from the Sun. This analysis suggests only modest deviations from self-similar expansion, but close to the Sun the prominence expands radially somewhat more rapidly than self-similarity would predict. C1 [Wood, Brian E.; Howard, Russell A.; Linton, Mark G.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA. RP Wood, BE (reprint author), Naval Res Lab, Div Space Sci, Washington, DC 20375 USA. EM brian.wood@nrl.navy.mil FU NASA/LWS [NNH14AX61I]; Naval Research FX Financial support was provided by the Chief of Naval Research, and by NASA/LWS award NNH14AX61I to the Naval Research Laboratory. NR 40 TC 3 Z9 3 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JAN 10 PY 2016 VL 816 IS 2 AR 67 DI 10.3847/0004-637X/816/2/67 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA DB0ZV UT WOS:000368238500019 ER PT J AU Hanbicki, AT Kioseoglou, G Currie, M Hellberg, CS McCreary, KM Friedman, AL Jonker, BT AF Hanbicki, A. T. Kioseoglou, G. Currie, M. Hellberg, C. Stephen McCreary, K. M. Friedman, A. L. Jonker, B. T. TI Anomalous temperature-dependent spin-valley polarization in monolayer WS2 SO SCIENTIFIC REPORTS LA English DT Article ID TRANSITION-METAL DICHALCOGENIDES; NONRADIATIVE AUGER RECOMBINATION; EXCITON BINDING-ENERGY; MOLYBDENUM-DISULFIDE; LAYER MOS2; SEMICONDUCTOR; SPECTROSCOPY; NANOCRYSTALS; LIFETIMES; HELICITY AB Single layers of transition metal dichalcogenides (TMDs) are direct gap semiconductors with nondegenerate valley indices. An intriguing possibility for these materials is the use of their valley index as an alternate state variable. Several limitations to such a utility include strong intervalley scattering, as well as multiparticle interactions leading to multiple emission channels. We prepare single-layer WS2 films such that the photoluminescence is from either the neutral or charged exciton (trion). After excitation with circularly polarized light, the neutral exciton emission has zero polarization. However, the trion emission has a large polarization (28%) at room temperature. The trion emission also has a unique, non-monotonic temperature dependence that is a consequence of the multiparticle nature of the trion. This temperature dependence enables us to determine that intervalley scattering, electron-hole radiative recombination, and Auger processes are the dominant mechanisms at work in this system. Because this dependence involves trion systems, one can use gate voltages to modulate the polarization (or intensity) emitted from TMD structures. C1 [Hanbicki, A. T.; Hellberg, C. Stephen; McCreary, K. M.; Friedman, A. L.; Jonker, B. T.] Naval Res Lab, Mat Sci & Technol Div, Washington, DC 20375 USA. [Kioseoglou, G.] Univ Crete, Iraklion 71003, Crete, Greece. [Kioseoglou, G.] Fdn Res & Technol Hellas FORTH, IESL, Iraklion 71110, Crete, Greece. [Currie, M.] Naval Res Lab, Opt Sci Div, Washington, DC 20375 USA. RP Hanbicki, AT (reprint author), Naval Res Lab, Mat Sci & Technol Div, Washington, DC 20375 USA. EM hanbicki@nrl.navy.mil RI Friedman, Adam/D-9610-2011 OI Friedman, Adam/0000-0003-0597-5432 FU core program at NRL; core program at the NRL Nanoscience Institute; Air Force Office of Scientific Research [AOARD 14IOA018-134141]; Naval Research Laboratory FX This work was supported by core programs at NRL and the NRL Nanoscience Institute, and by the Air Force Office of Scientific Research under contract number AOARD 14IOA018-134141. We thank Jim Culbertson for assistance with Raman measurements. GK gratefully acknowledges the hospitality and support of the Naval Research Laboratory where the experiments were performed. KMM performed some research as a National Research Council Research Associate at NRL. NR 42 TC 2 Z9 2 U1 5 U2 49 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 2045-2322 J9 SCI REP-UK JI Sci Rep PD JAN 5 PY 2016 VL 6 AR 18885 DI 10.1038/srep18885 PG 9 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA DB2ZK UT WOS:000368379000001 PM 26728976 ER PT J AU Powers, JH Guerrero, ML Leidy, NK Fairchok, MP Rosenberg, A Hernandez, A Stringer, S Schofield, C Rodriguez-Zulueta, P Kim, K Danaher, PJ Ortega-Gallegos, H Bacci, ED Stepp, N Galindo-Fraga, A St Clair, K Rajnik, M McDonough, EA Ridore, M Arnold, JC Millar, EV Ruiz-Palacios, GM AF Powers, John H. Guerrero, M. Lourdes Leidy, Nancy Kline Fairchok, Mary P. Rosenberg, Alice Hernandez, Andres Stringer, Sonja Schofield, Christina Rodriguez-Zulueta, Patricia Kim, Katherine Danaher, Patrick J. Ortega-Gallegos, Hilda Bacci, Elizabeth Dansie Stepp, Nathaniel Galindo-Fraga, Arturo St Clair, Kristina Rajnik, Michael McDonough, Erin A. Ridore, Michelande Arnold, John C. Millar, Eugene V. Ruiz-Palacios, Guillermo M. TI Development of the Flu-PRO: a patient-reported outcome (PRO) instrument to evaluate symptoms of influenza SO BMC INFECTIOUS DISEASES LA English DT Article DE Influenza; Symptoms; Patient-reported outcomes; Endpoints; Outcome assessments; Content validity ID TASK-FORCE REPORT; CONTENT VALIDITY AB Background: To develop content validity of a comprehensive patient-reported outcome (PRO) measure following current best scientific methodology to standardize assessment of influenza (flu) symptoms in clinical research. Methods: Stage I (Concept Elicitation): 1:1 telephone interviews with influenza-positive adults (>= 18 years) in the US and Mexico within 7 days of diagnosis. Participants described symptom type, character, severity, and duration. Content analysis identified themes and developed the draft Flu-PRO instrument. Stage II (Cognitive Interviewing): The Flu-PRO was administered to a unique set of influenza-positive adults within 14 days of diagnosis; telephone interviews addressed completeness, respondent interpretation of items and ease of use. Results: Samples: Stage I: N = 46 adults (16 US, 30 Mexico); mean (SD) age: 38 (19), 39 (14) years; % female: 56 %, 73 %; race: 69 % White, 97 % Mestizo. Stage II: N = 34 adults (12 US, 22 Mexico); age: 37 (14), 39 (11) years; % female: 50 %, 50 %; race: 58 % White, 100 % Mestizo. Symptoms: Symptoms identified by >50 %: coughing, weak or tired, throat symptoms, congestion, headache, weakness, sweating, chills, general discomfort, runny nose, chest (trouble breathing), difficulty sleeping, and body aches or pains. No new content was uncovered during Stage II; participants easily understood the instrument. Conclusions: Results show the 37-item Flu-PRO is a content valid measure of influenza symptoms in adults with a confirmed diagnosis of influenza. Research is underway to evaluate the suitability of the instrument for children and adolescents. This work can form the basis for future quantitative tests of reliability, validity, and responsiveness to evaluate the measurement properties of Flu-PRO for use in clinical trials and epidemiology studies. C1 [Powers, John H.; Rosenberg, Alice] Leidos Biomed Res Inc, Clin Monitoring & Res Program, Clin Res Directorate, Frederick Natl Lab Canc Res, Frederick, MD 21702 USA. [Powers, John H.; Rosenberg, Alice] NIAID, Collaborat Clin Res Branch, Div Clin Res, Bethesda, MD 20892 USA. [Guerrero, M. Lourdes; Ortega-Gallegos, Hilda; Galindo-Fraga, Arturo; Ruiz-Palacios, Guillermo M.] Inst Nacl Ciencias Med & Nutr Salvador Zubiran, Mexico City, DF, Mexico. [Leidy, Nancy Kline; Stringer, Sonja; Kim, Katherine; Bacci, Elizabeth Dansie] Evidera, Bethesda, MD USA. [Fairchok, Mary P.; Ridore, Michelande; Millar, Eugene V.] Uniformed Serv Univ Hlth Sci, Infect Dis Clin Res Program, Bethesda, MD 20814 USA. [Fairchok, Mary P.; Ridore, Michelande; Millar, Eugene V.] Henry M Jackson Fdn Adv Mil Med, Bethesda, MD USA. [Fairchok, Mary P.; Schofield, Christina] Madigan Army Med Ctr, Tacoma, WA 98431 USA. [Hernandez, Andres] Inst Nacl Enfermedades Infecciosas, Mexico City, DF, Mexico. [Rodriguez-Zulueta, Patricia] Hosp Gen Dr Manuel Gea Gonzalez, Mexico City, DF, Mexico. [Danaher, Patrick J.] San Antonio Hlth Syst, San Antonio, TX USA. [Stepp, Nathaniel] Camp Lejeune, Jacksonville, NC USA. [St Clair, Kristina] Naval Med Ctr Portsmouth, Portsmouth, VA USA. [Rajnik, Michael] Walter Reed Natl Mil Med Ctr, Bethesda, MD USA. [McDonough, Erin A.] Naval Hlth Res Ctr, San Diego, CA USA. [Arnold, John C.] Naval Med Ctr San Diego, San Diego, CA USA. RP Powers, JH (reprint author), Leidos Biomed Res Inc, Clin Monitoring & Res Program, Clin Res Directorate, Frederick Natl Lab Canc Res, Frederick, MD 21702 USA. EM john.powers@nih.gov FU National Cancer Institute, National Institutes of Health [HHSN261200800001E]; National Institutes of Allergy and Infectious Diseases FX This project has been funded in whole or in part with federal funds from the National Cancer Institute, National Institutes of Health, under Contract No. HHSN261200800001E. The content of this publication does not necessarily reflect the views or policies of the Department of Health and Human Services, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government. This project was supported by the National Institutes of Allergy and Infectious Diseases. NR 13 TC 3 Z9 3 U1 2 U2 6 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 JAN 5 PY 2016 VL 16 AR 1 DI 10.1186/s12879-015-1330-0 PG 11 WC Infectious Diseases SC Infectious Diseases GA DA1PC UT WOS:000367566700001 PM 26729246 ER PT J AU Bruneau, T AF Bruneau, Thomas TI Impediments to Fighting the Islamic State: Private Contractors and US Strategy SO JOURNAL OF STRATEGIC STUDIES LA English DT Article DE Strategy. Islamic State; Inherently Governmental Functions; Contracting Officers; Incentives; Private Contractors AB The United States has returned to Iraq, this time to combat the Islamic State. President Barack Obama's strategy to 'degrade, and ultimately destroy the terrorist group' faces serious problems due to political obstacles in obtaining Congressional Authorization for the Use of Military Force (AUMF) and more importantly because of neglect of the crucial role of private contractors. Although the narrative has changed, and there is no public mention of contractors, they remain central to all that the Department of Defense does in the US and abroad. Suggestions are offered on how their performance can be improved to support President Obama's strategy. C1 [Bruneau, Thomas] US Naval Postgrad Sch, Natl Secur Affairs, Monterey, CA USA. RP Bruneau, T (reprint author), US Naval Postgrad Sch, Natl Secur Affairs, Monterey, CA USA. EM tbruneau@nps.edu NR 44 TC 0 Z9 0 U1 4 U2 8 PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD PI ABINGDON PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0140-2390 EI 1743-937X J9 J STRATEGIC STUD JI J. Strateg. Stud. PD JAN 2 PY 2016 VL 39 IS 1 BP 120 EP 141 DI 10.1080/01402390.2015.1065486 PG 22 WC International Relations; Political Science SC International Relations; Government & Law GA DF6XW UT WOS:000371502500006 ER PT J AU Insler, M Swope, K AF Insler, Michael Swope, Kurtis TI School Quality, Residential Choice, and the US Housing Bubble SO HOUSING POLICY DEBATE LA English DT Article DE residential choice; housing expenditures; school quality; U; S; housing crisis AB Using data from the American Housing Survey (years 2001-2009), we find that purchase prices for homes selected primarily to access self-identified good schools rose (relative to homes selected for other reasons) during the key U.S. housing bubble period, compared with the periods before and after the bubble. We observe a similar pattern in homebuyers' mortgage-to-income ratios. Various regression specifications and propensity score matching techniques show that these trends persist conditional on a range of household, demographic, and economic controls. Our results suggest that the strong, bubble-era pursuit of good schools may have played a role in the housing bubble's expansion. C1 [Insler, Michael; Swope, Kurtis] US Naval Acad, Dept Econ, Annapolis, MD 21402 USA. RP Insler, M (reprint author), US Naval Acad, Dept Econ, Annapolis, MD 21402 USA. EM insler@usna.edu NR 29 TC 0 Z9 0 U1 4 U2 10 PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXFORDSHIRE, ENGLAND SN 1051-1482 EI 2152-050X J9 HOUS POLICY DEBATE JI Hous. Policy Debate PD JAN 2 PY 2016 VL 26 IS 1 BP 53 EP 79 DI 10.1080/10511482.2014.956777 PG 27 WC Planning & Development; Urban Studies SC Public Administration; Urban Studies GA CY7UJ UT WOS:000366614500003 ER PT J AU Cotton, RT Pearce, CW Young, PG Kota, N Leung, AC Bagchi, A Qidwai, SM AF Cotton, R. T. Pearce, C. W. Young, P. G. Kota, N. Leung, A. C. Bagchi, A. Qidwai, S. M. TI Development of a geometrically accurate and adaptable finite element head model for impact simulation: the Naval Research Laboratory-Simpleware Head Model SO COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING LA English DT Article DE head impact; blast; traumatic brain injury; simulation; finite element; meshing ID TRAUMATIC BRAIN-INJURY; CORTICAL BONE; INTRACRANIAL-PRESSURE; TRABECULAR BONE; BIOMECHANICS; MECHANISMS; MUSCLE; MOTION AB This study demonstrates a novel model generation methodology that addresses several limitations of conventional finite element head models (FEHM). By operating chiefly in image space, new structures can be incorporated or merged, and the mesh either decimated or refined both locally and globally. This methodology is employed in the development of a highly bio-fidelic FEHM from high-resolution scan data. The model is adaptable and presented here in a form optimised for impact and blast simulations. The accuracy and feasibility of the model are successfully demonstrated against a widely used experimental benchmark in impact loading and through the investigation of potential brain injury under blast overpressure loading. C1 [Cotton, R. T.; Pearce, C. W.] Simpleware Ltd, Exeter EX4 3PL, Devon, England. [Young, P. G.] Univ Exeter, Coll Engn Math & Phys Sci, Exeter, Devon, England. [Kota, N.] Leidos Corp, MCET Dept, Arlington, VA USA. [Leung, A. C.; Bagchi, A.; Qidwai, S. M.] US Naval Res Lab, Multifunct Mat Branch, Washington, DC USA. RP Cotton, RT (reprint author), Simpleware Ltd, Bradninch Hall,Castle St, Exeter EX4 3PL, Devon, England. EM r.cotton@simpleware.com FU Office of Naval Research (ONR) through US Naval Research Laboratory's Basic Research Program; Department of Defense (DoD) High Performance Computing Modernization Program (HPCMP); Air Force Research Laboratory (AFRL); Major Shared Resource Center (MSRC) [416, 231] FX This work was supported by the Office of Naval Research (ONR) through the US Naval Research Laboratory's Basic Research Program, and the Department of Defense (DoD) High Performance Computing Modernization Program (HPCMP) using the Air Force Research Laboratory (AFRL) Major Shared Resource Center (MSRC) under project 416, subproject 231. NR 41 TC 1 Z9 1 U1 3 U2 19 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1025-5842 EI 1476-8259 J9 COMPUT METHOD BIOMEC JI Comput. Methods Biomech. Biomed. Eng. PD JAN 2 PY 2016 VL 19 IS 1 BP 101 EP 113 DI 10.1080/10255842.2014.994118 PG 13 WC Computer Science, Interdisciplinary Applications; Engineering, Biomedical SC Computer Science; Engineering GA CV0FF UT WOS:000363923600002 PM 25563692 ER PT S AU Sapkota, G Case, JR Potter, MG Busse, LE Shaw, LB Sanghera, JS Aggarwal, ID Poutous, MK AF Sapkota, Gopal Case, Jason R. Potter, Matthew G. Busse, Lynda E. Shaw, L. Brandon Sanghera, Jasbinder S. Aggarwal, Ishwar D. Poutous, Menelaos K. BE Exarhos, GJ Gruzdev, VE Menapace, JA Ristau, D Soileau, MJ TI Entry and exit facet laser damage of optical windows with random antireflective surface structures SO LASER-INDUCED DAMAGE IN OPTICAL MATERIALS 2016 SE Proceedings of SPIE LA English DT Proceedings Paper CT 48th SPIE Annual Laser Damage Symposium on Optical Materials for High-Power Lasers CY SEP 25-28, 2015 CL Boulder, CO SP SPIE, Laser Components GmbH, Spica Technologies Inc, ZC Optoelectron Technologies Ltd DE random anti-reflection surfaces; laser-induced damage threshold; laser thermal damage; laser damage resistance; broadband transmission enhancement; fused silica laser windows AB Nanosecond duration, high intensity and high average power laser pulses induce damage on uncoated optics, due to localized field enhancement at the exit surface of the components. Anti-reflection (AR) coated optics, due to their (multiple) thin film boundaries, have similar field enhancement regions, which lead to laser damage on both entry and exit sides. Nano-scale structured optical interfaces with AR performance (ARSS) have been widely demonstrated, and found to have higher laser damage resistance than conventional AR coatings. Comprehensive tests of optical entry and exit structured-surface laser damage using nanosecond pulses for ARSS are not widely available. We measured the laser damage of random anti-reflective surface structures (rARSS), on planar, optical quality, fused silica substrates, using single 6-8ns duration pulses at 1064 nm wavelength. The single-sided rARSS substrates were optimized for Fresnel reflectance suppression at 1064 nm, and the measured transmittance at normal incidence was increased by 3.2%, with a possible theoretical maximum of 3.5%. The high energy laser beam was focused to increase the incident intensity, in order to probe values above and below the damage thresholds reported in the literature. The source laser Q-switch durations were used to directly control incident fluence. Multiple locations were tested for each Q-switch setting, to build a statistical relationship between the fluence and damaging events. Single-sided, AR random surface structured substrates were tested, using entry and exit side orientations, to determine any effects the random structures may have in the damage induced by the field enhancement on the exit side. We found that the AR randomly structured surfaces have a higher resistance, to the onset of laser damage, when they are located at the entry (structured) side of the substrates. In comparison, when the same AR random structures are in the beam exit side of the substrates, the onset of laser damage occurs at lower fluence values. All tests resulting in damage of the optical-quality polished fused silica substrates, and those with the structures on the exit side of the samples, are ballistic in nature, showing surface cracks and outward-directed debris craters, all occurring at the beam exit facet. Of interest are the results from tests completed with the rARSS located on the beam entry side; the damage caused by these tests was not typically ballistic in nature (inward directed craters) and occurred on the structured side of the samples. C1 [Sapkota, Gopal; Case, Jason R.; Potter, Matthew G.; Poutous, Menelaos K.] Univ North Carolina Charlotte, Dept Phys & Opt Sci, Charlotte, NC 28223 USA. [Busse, Lynda E.; Shaw, L. Brandon; Sanghera, Jasbinder S.] Naval Res Lab, Code 5620, Washington, DC 20375 USA. [Aggarwal, Ishwar D.] Sotera Def Solut, Mclean, VA 22102 USA. RP Sapkota, G (reprint author), Univ North Carolina Charlotte, Dept Phys & Opt Sci, Charlotte, NC 28223 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0437-7 J9 PROC SPIE PY 2016 VL 10014 AR UNSP 1001404 DI 10.1117/12.2244540 PG 7 WC Optics; Physics, Applied SC Optics; Physics GA BH0BA UT WOS:000394528400002 ER PT S AU Sanchez, SM AF Sanchez, Susan M. GP IEEE TI SIMULATION EXPERIMENTS: BETTER DATA, NOT JUST BIG DATA SO 2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) SE Proceedings of the European Conference on Antennas and Propagation LA English DT Proceedings Paper CT 10th European Conference on Antennas and Propagation (EuCAP) CY APR 10-15, 2016 CL Davos, SWITZERLAND ID SEQUENTIAL DESIGNS; EFFICIENT AB Data mining tools have been around for several decades, but the term "big data" has only recently captured widespread attention. Numerous success stories have been promulgated as organizations have sifted through massive volumes of data to find interesting patterns that are, in turn, transformed into actionable information. Yet a key drawback to the big data paradigm is that it relies on observational data-limiting the types of insights that can be gained. The simulation world is different. A "data farming" metaphor captures the notion of purposeful data generation from simulation models. Large-scale designed experiments let us grow the simulation output efficiently and effectively. We can explore massive input spaces, uncover interesting features of complex simulation response surfaces, and explicitly identify cause-and-effect relationships. With this new mindset, we can achieve quantum leaps in the breadth, depth, and timeliness of the insights yielded by simulation models. C1 [Sanchez, Susan M.] Naval Postgraduate Sch, Dept Operat Res, 1411 Cunningham Rd, Monterey, CA 93943 USA. RP Sanchez, SM (reprint author), Naval Postgraduate Sch, Dept Operat Res, 1411 Cunningham Rd, Monterey, CA 93943 USA. EM ssanchez@nps.edu NR 32 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2164-3342 BN 978-8-8907-0186-3 J9 PROC EUR CONF ANTENN PY 2016 BP 805 EP 816 PG 12 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XP UT WOS:000388372501008 ER PT S AU Elmegreen, BG Sanchez, SM Szalay, AS AF Elmegreen, Bruce G. Sanchez, Susan M. Szalay, Alexander S. GP IEEE TI THE FUTURE OF COMPUTERIZED DECISION MAKING SO 2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) SE Proceedings of the European Conference on Antennas and Propagation LA English DT Proceedings Paper CT 10th European Conference on Antennas and Propagation (EuCAP) CY APR 10-15, 2016 CL Davos, SWITZERLAND AB Computerized decision making is becoming a reality with exponentially growing data and machine capabilities. Some decision making is extremely complex, historically reserved for governing bodies or market places where the collective human experience and intelligence come to play. Other decision making can be trusted to computers that are on a path now into the future through novel software development and technological improvements in data access. In all cases, we should think about this carefully first: what data are really important for our goals and what data should be ignored or not even stored? The answer to these questions involves human intelligence and understanding before the data-to-decision process begins. C1 [Elmegreen, Bruce G.] IBM Res Div, T J Watson Res Ctr, 1101 Kitchawan Rd, Yorktown Hts, NY 10598 USA. [Sanchez, Susan M.] Naval Postgraduate Sch, Dept Operat Res, Monterey, CA 93943 USA. [Elmegreen, Bruce G.; Sanchez, Susan M.; Szalay, Alexander S.] Johns Hopkins Univ, Dept Phys & Astron, 3701 San Martin Dr, Baltimore, MD 21210 USA. RP Elmegreen, BG (reprint author), IBM Res Div, T J Watson Res Ctr, 1101 Kitchawan Rd, Yorktown Hts, NY 10598 USA.; Elmegreen, BG (reprint author), Johns Hopkins Univ, Dept Phys & Astron, 3701 San Martin Dr, Baltimore, MD 21210 USA. EM bge@us.ibm.com; ssanchez@nps.edu; szalay@jhu.edu NR 13 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2164-3342 BN 978-8-8907-0186-3 J9 PROC EUR CONF ANTENN PY 2016 BP 943 EP 949 PG 7 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XP UT WOS:000388372501020 ER PT S AU Karatas, M Craparo, EM Singham, DI AF Karatas, Mumtaz Craparo, Emily M. Singham, Dashi I. GP IEEE TI SELECTION OF A PLANNING HORIZON FOR A HYBRID MICROGRID USING SIMULATED WIND FORECASTS SO 2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) SE Proceedings of the European Conference on Antennas and Propagation LA English DT Proceedings Paper CT 10th European Conference on Antennas and Propagation (EuCAP) CY APR 10-15, 2016 CL Davos, SWITZERLAND ID RENEWABLE ENERGY-SOURCES AB Hybrid microgrids containing renewable energy sources represent a promising option for organizations wishing to reduce costs while increasing energy security and islanding time. A prime example of such an organization is the U.S. military, which often operates in isolated areas and whose reliance on a fragile commercial electric grid is seen as a security risk. However, incorporating renewable sources into a microgrid is difficult due to their typically intermittent and unpredictable nature. We use simulation techniques to investigate the performance of a hypothetical hybrid microgrid containing both wind turbines and fossil fuel based power sources. Our simulation model produces realistic weather forecast scenarios, which we use to exercise our optimization model and predict optimal grid performance. We perform a sensitivity analysis and find that for day-ahead planning, longer planning horizons are superior to shorter planning horizons, but this improvement diminishes as the length of the planning horizon increases. C1 [Karatas, Mumtaz] Turkish Naval Acad Tuzla, TR-34942 Istanbul, Turkey. [Craparo, Emily M.; Singham, Dashi I.] US Navy, Postgrad Sch, Monterey, CA 93943 USA. RP Karatas, M (reprint author), Turkish Naval Acad Tuzla, TR-34942 Istanbul, Turkey. EM mkaratas@dho.edu.tr; emcrapar@nps.edu; dsingham@nps.edu NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2164-3342 BN 978-8-8907-0186-3 J9 PROC EUR CONF ANTENN PY 2016 BP 1050 EP 1060 PG 11 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XP UT WOS:000388372501030 ER PT S AU Diaz, SA Buckhout-White, S Brown, CW Samanta, A Klein, WP Ancona, MG Dwyer, CL Goldman, ER Melinger, JS Cunningham, PD Spillmann, CM Medintz, IL AF Diaz, Sebastian A. Buckhout-White, Susan Brown, Carl W., III Samanta, Anirban Klein, William P. Ancona, Mario G. Dwyer, Chris L. Goldman, Ellen R. Melinger, Joseph S. Cunningham, Paul D. Spillmann, Chris M. Medintz, Igor L. BE Hutchinson, MR Goldys, EM TI Using DNA nanostructures to harvest light and create energy transfer and harvesting systems SO SPIE BIOPHOTONICS AUSTRALASIA SE Proceedings of SPIE LA English DT Proceedings Paper CT SPIE BioPhotonics Australasia Conference CY OCT 17-19, 2016 CL Adelaide, AUSTRALIA SP RMIT Univ, Univ Adelaide, Trajan Sci & Med, Olympus Coprorat, Australian Res Council, ILab Solut, Lastek PTY Ltd, Leica Microsystems, Micron Opt, Quark Photon, Carl Zeiss AG, SPIE ID SEMICONDUCTOR QUANTUM DOTS; PHOTONIC WIRES; TRANSFER RELAYS; WAVE-GUIDES; DELIVERY; FRET; CASCADES; PROTEINS; DEVICES; LIGAND AB DNA is a biocompatible scaffold that allows for the design of a variety of nanostructures, from straightforward double stranded DNA to more complex DNA origami and 3-D structures. By modifying the structures, with dyes, nanoparticles, or enzymes, they can be used to create light harvesting and energy transfer systems. We have focused on using Forster resonance energy transfer (FRET) between organic fluorophores separated with nanometer precision based on the DNAs defined positioning. Using FRET theory we can control the direction of the energy flow and optimize the design parameters to increase the systems efficiency. The design parameters include fluorophore selection, separation, number, and orientation among others. Additionally the use of bioluminescence resonance energy transfer (BRET) allowed the use of chemical energy, as opposed to photonic, to activate the systems. Here we discuss a variety of systems, such as the longest reported DNA-based molecular photonic wires (> 30 nm), dendrimeric light harvesting systems, and semiconductor nanocrystals integrated systems where they act as both scaffold and antennae for the original excitation. Using a variety of techniques, a comparison of different types of structures as well as heterogeneous vs. homogenous FRET was realized. C1 [Diaz, Sebastian A.; Buckhout-White, Susan; Brown, Carl W., III; Samanta, Anirban; Goldman, Ellen R.; Spillmann, Chris M.; Medintz, Igor L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA. [Klein, William P.] Boise State Univ, Micron Sch Mat Sci & Engn, Nanoscale Mat & Device Grp, Boise, ID 83725 USA. [Ancona, Mario G.; Melinger, Joseph S.; Cunningham, Paul D.] US Naval Res Lab, Opt Sci Div, Code 5600, Washington, DC 20375 USA. [Dwyer, Chris L.] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA. RP Medintz, IL (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA. NR 51 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 978-1-5106-0435-3 J9 PROC SPIE PY 2016 VL 10013 AR UNSP 1001317 DI 10.1117/12.2242727 PG 10 WC Biophysics; Optics; Radiology, Nuclear Medicine & Medical Imaging SC Biophysics; Optics; Radiology, Nuclear Medicine & Medical Imaging GA BH0AZ UT WOS:000394526200013 ER PT S AU Galloway, KS Dey, B AF Galloway, Kevin S. Dey, Biswadip GP IEEE TI Stability and Pure Shape Equilibria for Beacon-referenced Cyclic Pursuit SO 2016 AMERICAN CONTROL CONFERENCE (ACC) SE Proceedings of the American Control Conference LA English DT Proceedings Paper CT American Control Conference (ACC) CY JUL 06-08, 2016 CL Boston, MA SP Amer Automat Control Council DE Cyclic pursuit; Cooperative control; Multiagent systems AB Cyclic pursuit systems provide a means to generate useful global behaviors in a collective of autonomous agents based on dyadic pursuit interactions between neighboring agents in a cycle graph. Here we consider a modified version of the cyclic pursuit framework in which a stationary beacon provides an additional reference for the agents in the system. Building on the framework proposed in our previous work, we derive necessary conditions for stability of circling equilibria in the n-agent system. Furthermore, we employ a change of variables to reveal the existence of a family of invariant manifolds related to spiral motions which maintain the formation shape up to geometric similarity. C1 [Galloway, Kevin S.] US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA. [Dey, Biswadip] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA. RP Galloway, KS (reprint author), US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA. EM kgallowa@usna.edu; biswadip@princeton.edu FU Office of Naval Research under ONR grant [N00014-14-1-0635] FX This research was supported in part by the Office of Naval Research under ONR grant N00014-14-1-0635 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 0743-1619 BN 978-1-4673-8682-1 J9 P AMER CONTR CONF PY 2016 BP 161 EP 166 PG 6 WC Automation & Control Systems SC Automation & Control Systems GA BG3XW UT WOS:000388376100028 ER PT S AU Shaffer, R Karpenko, M Gong, Q AF Shaffer, Richard Karpenko, Mark Gong, Qi GP IEEE TI Unscented Guidance for Waypoint Navigation of a Fixed-Wing UAV SO 2016 AMERICAN CONTROL CONFERENCE (ACC) SE Proceedings of the American Control Conference LA English DT Proceedings Paper CT American Control Conference (ACC) CY JUL 06-08, 2016 CL Boston, MA SP Amer Automat Control Council AB Aerodynamic uncertainty can lead to large variations in the dynamics of fixed-wing unmanned aerial vehicles. Thus, waypoint navigation is normally done using a feedback controller. In some environments navigation can be done in the open-loop provided that the control is desensitized to the uncertainty. In this paper, unscented optimal control is used to design such open-loop controls for guiding a UAV between waypoints. The unscented optimal control problem considers the effects of parametric uncertainty and is formulated as a deterministic optimal control problem so that it can be solved computationally. The results show an improvement of 30% in the mean terminal error and a 35% reduction in the standard deviation for a canonical turn maneuver. A second unscented problem that includes an additional control over the thrust provides an improvement of 50% in the mean error and a 60% reduction in the standard deviation. The unscented guidance provides a new framework for waypoint navigation and could prove to be a promising approach for non ideal environments. C1 [Shaffer, Richard] Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA. [Karpenko, Mark] US Navy, Postgrad Sch, Monterey, CA 93943 USA. [Gong, Qi] Univ Calif Santa Cruz, Appl Math & Stat, Santa Cruz, CA 95064 USA. RP Shaffer, R (reprint author), Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA. EM rsshaffe@ucsc.edu; mkarpenk@nps.edu; qigong@soe.ucsc.edu NR 26 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-1619 BN 978-1-4673-8682-1 J9 P AMER CONTR CONF PY 2016 BP 473 EP 478 PG 6 WC Automation & Control Systems SC Automation & Control Systems GA BG3XW UT WOS:000388376100078 ER PT S AU Opila, DF AF Opila, Daniel F. GP IEEE TI Uncertain Route, Destination, and Traffic Predictions in Energy Management for Hybrid, Plug-in, and Fuel-Cell Vehicles SO 2016 AMERICAN CONTROL CONFERENCE (ACC) SE Proceedings of the American Control Conference LA English DT Proceedings Paper CT American Control Conference (ACC) CY JUL 06-08, 2016 CL Boston, MA SP Amer Automat Control Council ID STOCHASTIC OPTIMAL-CONTROL; ELECTRIC VEHICLES; POWER MANAGEMENT; STRATEGY AB This paper incorporates uncertain future route predictions, destinations, and charging locations with associated speed and grade profiles into the energy management control of alternative powertrains like hybrid, plug-in, electric, and fuel cell vehicles. The method allows the combination of other sources of uncertain information like markov driver models, historic speed information, and real-time traffic predictions. This flexibility allows the consideration of a variety of information cases like uncertain traffic/speed and route information, multiple possible destinations, stopping points, and charging locations, simple range estimates to the destination, and no future knowledge at all. The model can be used with any vehicle type and stochastic control method, and is suitable for real-time calculations either on the vehicle or a server. Two techniques are also presented to reduce the computational complexity of the problem. This approach is demonstrated on a simulated trip with two possible destinations using the stochastic dynamic programming algorithm. C1 [Opila, Daniel F.] US Naval Acad, Fac Elect & Comp Engn, Annapolis, MD 21402 USA. RP Opila, DF (reprint author), US Naval Acad, Fac Elect & Comp Engn, Annapolis, MD 21402 USA. EM opila@usna.edu NR 29 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-1619 BN 978-1-4673-8682-1 J9 P AMER CONTR CONF PY 2016 BP 1685 EP 1692 PG 8 WC Automation & Control Systems SC Automation & Control Systems GA BG3XW UT WOS:000388376101119 ER PT S AU DeVries, LD Kutzer, MDM AF DeVries, Levi D. Kutzer, Michael D. M. GP IEEE TI Kernel Design for Coordination of Autonomous, Time-varying Multi-agent Configurations SO 2016 AMERICAN CONTROL CONFERENCE (ACC) SE Proceedings of the American Control Conference LA English DT Proceedings Paper CT American Control Conference (ACC) CY JUL 06-08, 2016 CL Boston, MA SP Amer Automat Control Council ID PLANAR COLLECTIVE MOTION; COLLISION-AVOIDANCE; SYSTEMS; COMMUNICATION; TRACKING; STABILIZATION; VEHICLES AB The coordination of agents in an autonomous system can greatly increase its ability to perform missions in a wide array of applications including distributed computing, coordination of mobile autonomous agents, and cooperative sensing. To expand the functionality of these systems to a wider array of applications, a need exists for coordinated control algorithms driving the system of nodes or agents to any prescribed state configuration in both time and space using only information passed between communicating agents. Using tools from graph theory, this paper derives a graph transformation method that maps the kernel of a graph's Laplacian matrix to any desired state configuration vector while retaining inter-agent communication characteristics of the graph. Using the transformation, this paper derives a theoretically-justified, decentralized control algorithm driving kinematic agents to any relative time-varying state configuration. Theoretical results are illustrated with numerical examples including load distribution in a computing network and surveillance of a moving target with kinematic agents. C1 [DeVries, Levi D.; Kutzer, Michael D. M.] US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA. RP DeVries, LD (reprint author), US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA. EM devries@usna.edu; kutzer@usna.edu 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 SN 0743-1619 BN 978-1-4673-8682-1 J9 P AMER CONTR CONF PY 2016 BP 1975 EP 1980 PG 6 WC Automation & Control Systems SC Automation & Control Systems GA BG3XW UT WOS:000388376102006 ER PT S AU Ross, IM Karpenko, M Proulx, RJ AF Ross, I. Michael Karpenko, Mark Proulx, Ronald J. GP IEEE TI Path Constraints in Tychastic and Unscented Optimal Control: Theory, Application and Experimental Results SO 2016 AMERICAN CONTROL CONFERENCE (ACC) SE Proceedings of the American Control Conference LA English DT Proceedings Paper CT American Control Conference (ACC) CY JUL 06-08, 2016 CL Boston, MA SP Amer Automat Control Council ID SEARCH AB In recent papers, we have shown that a Lebesgue-Stieltjes optimal control theory forms the foundations for un-scented optimal control. In this paper, we further our results by incorporating uncertain mixed state-control constraints in the problem formulation. We show that the integrated Hamiltonian minimization condition resembles a semi-infinite type mathematical programming problem. The resulting computational difficulties are mitigated through the use of the unscented transform; however, the price of this approximation is a solution to a chance-constrained optimal control problem whose risk level is determined a posteriori. Experimental results conducted at Honeywell are presented to demonstrate the success of the theory. An order of magnitude reduction in the failure rate in obtained through the use of an unscented optimal control that steers a spacecraft testbed driven by control- moment gyros. C1 [Ross, I. Michael; Karpenko, Mark; Proulx, Ronald J.] US Navy, Postgrad Sch, Control & Optimizat, Monterey, CA 93943 USA. RP Karpenko, M (reprint author), US Navy, Postgrad Sch, Control & Optimizat, Monterey, CA 93943 USA. EM mkarpenk@nps.edu FU U.S. Navy's Judge Advocate General's office for securing [US8,880,246 B1, 14/081,921, 61/985,917] FX We thank the U.S. Navy's Judge Advocate General's office for securing US8,880,246 B1 and their strong support in filing our applications for US patents 14/081,921 and 61/985,917. NR 31 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-1619 BN 978-1-4673-8682-1 J9 P AMER CONTR CONF PY 2016 BP 2918 EP 2923 PG 6 WC Automation & Control Systems SC Automation & Control Systems GA BG3XW UT WOS:000388376102160 ER PT S AU Paulson, E Griffin, C AF Paulson, Elisabeth Griffin, Christopher GP IEEE TI Deriving an Optimally Deceptive Policy in Two-Player Iterated Games SO 2016 AMERICAN CONTROL CONFERENCE (ACC) SE Proceedings of the American Control Conference LA English DT Proceedings Paper CT American Control Conference (ACC) CY JUL 06-08, 2016 CL Boston, MA SP Amer Automat Control Council ID FINITE AUTOMATA AB We formulate the problem of determining an optimally deceptive strategy in a repeated game framework. We assume that two players are engaged in repeated play. During an initial time period, Player 1 may deceptively train his opponent to expect a specific strategy. The opponent computes a best response. The best response is computed on an optimally deceptive strategy that maximizes the first player's long-run payoff during actual game play. Player 1 must take into consideration not only his real payoff but also the cost of deception. We formulate the deception problem as a nonlinear optimization problem and show how a genetic algorithm can be used to compute an optimally deceptive play. In particular, we show how the cost of deception can lead to strategies that blend a target strategy (policy) and an optimally deceptive one. C1 [Paulson, Elisabeth] Booz Allen Hamilton, Annapolis Jct, MD 20701 USA. [Griffin, Christopher] US Naval Acad, Dept Math, Annapolis, MD 21402 USA. RP Paulson, E (reprint author), Booz Allen Hamilton, Annapolis Jct, MD 20701 USA. EM elisabethpaulson63@gmail.com; griffinch@ieee.org NR 29 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-1619 BN 978-1-4673-8682-1 J9 P AMER CONTR CONF PY 2016 BP 3808 EP 3813 PG 6 WC Automation & Control Systems SC Automation & Control Systems GA BG3XW UT WOS:000388376103141 ER PT S AU O'Brien, RT Turner, MC AF O'Brien, Richard T., Jr. Turner, Matthew C. GP IEEE TI Improved Computation of Dwell Time using the Real Jordan Form SO 2016 AMERICAN CONTROL CONFERENCE (ACC) SE Proceedings of the American Control Conference LA English DT Proceedings Paper CT American Control Conference (ACC) CY JUL 06-08, 2016 CL Boston, MA SP Amer Automat Control Council ID SWITCHED LINEAR-SYSTEMS; STABILITY AB This paper addresses stability guarantees for a switching system. For this work, a switching system consists of a collection of subsystems with known LTI models and a switching signal that determines which subsystem model governs the system's dynamics at any given time. The switching signal may be the result of an operator's choice or a reaction to external events. Previous work has shown that the switching system will be stable if the switching signal is piecewise constant and dwells on each chosen value for some minimum period of time. Morse and Geromel have proposed methods for estimating an upper bound on the minimum dwell time from the realizations of the LTI subsystems. In recent work, the authors introduced a method that utilizes the real Jordan form. In this paper, the real Jordan form approach is optimized to achieve the accuracy of Geromel's algorithm at a significantly lower computation cost. Numerical simulation of a switched system derived from an adaptive H-infinity vibration attenuation controller illustrates the accuracy and computational efficiency of the proposed algorithm. C1 [O'Brien, Richard T., Jr.] US Naval Acad, Dept Syst Engn, Annapolis, MD 21402 USA. [Turner, Matthew C.] Univ Leicester, Dept Engn, Leicester LE1 7RH, Leics, England. RP O'Brien, RT (reprint author), US Naval Acad, Dept Syst Engn, Annapolis, MD 21402 USA. EM riobrien@usna.edu; mct6@leicester.ac.uk NR 13 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-1619 BN 978-1-4673-8682-1 J9 P AMER CONTR CONF PY 2016 BP 4281 EP 4286 PG 6 WC Automation & Control Systems SC Automation & Control Systems GA BG3XW UT WOS:000388376104057 ER PT S AU Kaufman, E Lee, T Ai, ZM Moskowitz, IS AF Kaufman, Evan Lee, Taeyoung Ai, Zhuming Moskowitz, Ira S. GP IEEE TI Bayesian Occupancy Grid Mapping via an Exact Inverse Sensor Model SO 2016 AMERICAN CONTROL CONFERENCE (ACC) SE Proceedings of the American Control Conference LA English DT Proceedings Paper CT American Control Conference (ACC) CY JUL 06-08, 2016 CL Boston, MA SP Amer Automat Control Council AB Occupancy grid maps are spatial representations of environments, where the space of interest is decomposed into a number of cells that are considered either occupied or free. This paper focuses on occupancy grid mapping, which is to estimate the probability of occupancy for each cell based on range measurements from a known location. For a given probabilistic model of a range sensor, we propose a computationally efficient method to obtain an exact inverse sensor model, and it is utilized to construct a probabilistic mapping algorithm according to the Bayesian framework. Compared with the existing occupancy grid mapping techniques that rely on approximate, heuristic inverse sensor models, the proposed approach yields substantially more accurate maps for the same set of measurements. These are illustrated by numerical examples and experiments. C1 [Kaufman, Evan; Lee, Taeyoung] George Washington Univ, Mech & Aerosp Engn, Washington, DC 20052 USA. [Ai, Zhuming; Moskowitz, Ira S.] US Naval Res Lab, Informat Management & Decis Architectures, Washington, DC 20375 USA. RP Kaufman, E (reprint author), George Washington Univ, Mech & Aerosp Engn, Washington, DC 20052 USA. EM evankaufman@gwu.edu; tylee@gwu.edu FU U.S. Naval Research Laboratory Base Program Work Unit "Intelligent Microflyer"; NSF [CMMI-1243000, CMMI-1335008, CNS-1337722] FX This research has been supported by the U.S. Naval Research Laboratory Base Program Work Unit "Intelligent Microflyer" and in part by NSF under the grants CMMI-1243000, CMMI-1335008, and CNS-1337722. NR 13 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0743-1619 BN 978-1-4673-8682-1 J9 P AMER CONTR CONF PY 2016 BP 5709 EP 5715 PG 7 WC Automation & Control Systems SC Automation & Control Systems GA BG3XW UT WOS:000388376105123 ER PT S AU Justh, EW Krishnaprasad, PS AF Justh, Eric W. Krishnaprasad, P. S. GP IEEE TI Subriemannian geodesics for coupled nonholonomic integrators SO 2016 AMERICAN CONTROL CONFERENCE (ACC) SE Proceedings of the American Control Conference LA English DT Proceedings Paper CT American Control Conference (ACC) CY JUL 06-08, 2016 CL Boston, MA SP Amer Automat Control Council AB We introduce in this paper a one-parameter family of optimal control problems for a pair of nonholonomic integrators, coupled through a mismatch term in the cost functional. The coupling constant parametrizes associated geodesic equations and a novel model problem in subriemannian geometry. A typical slice of the corresponding 5-dimensional geodesic sphere can be visualized by methods used to compute the 2-dimensional subriemannian geodesic sphere for a single nonholonomic integrator. C1 [Krishnaprasad, P. S.] Univ Maryland, Syst Res Inst, College Pk, MD 20742 USA. [Krishnaprasad, P. S.] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA. [Justh, Eric W.] Naval Res Lab, Washington, DC 20375 USA. RP Krishnaprasad, PS (reprint author), Univ Maryland, Syst Res Inst, College Pk, MD 20742 USA.; Krishnaprasad, PS (reprint author), Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA. EM krishna@umd.edu FU ARL/ARO MURI Program [W911NF-13-1-0390]; Office of Naval Research FX This research was supported in part by the ARL/ARO MURI Program Grant No. W911NF-13-1-0390, and 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 SN 0743-1619 BN 978-1-4673-8682-1 J9 P AMER CONTR CONF PY 2016 BP 7281 EP 7288 PG 8 WC Automation & Control Systems SC Automation & Control Systems GA BG3XW UT WOS:000388376107057 ER PT S AU Mckay, J Monga, V Raj, R AF Mckay, J. Monga, V. Raj, R. GP IEEE TI LOCALIZED DICTIONARY DESIGN FOR GEOMETRICALLY ROBUST SONAR ATR SO 2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT 36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS) CY JUL 10-15, 2016 CL Beijing, PEOPLES R CHINA SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers, Geoscience & Remote Sensing Soc, NSSC ID SYNTHETIC-APERTURE SONAR; SPARSE REPRESENTATION; FACE RECOGNITION; CLASSIFICATION AB Advancements in Sonar image capture have opened the door to powerful classification schemes for automatic target recognition (ATR). Recent work has particularly seen the application of sparse reconstruction-based classification (SRC) to sonar ATR, which provides compelling accuracy rates even in the presence of noise and blur. However, existing sparsity based sonar ATR techniques assume that the test images exhibit geometric pose that is consistent with respect to the training set. This work addresses the outstanding open challenge of handling inconsistently posed Sonar images relative to training. We develop a new localized block-based dictionary design that can enable geometric robustness. Further, a dictionary learning method is incorporated to increase performance and efficiency. The proposed SRC with Localized Pose Management (LPM), is shown to outperform the state of the art SIFT feature and SVM approach, due to its power to discern background clutter in Sonar images. C1 [Mckay, J.; Monga, V.] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA. [Raj, R.] US Navy, Res Lab, Washington, DC 20375 USA. RP Mckay, J (reprint author), Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA. FU Office of Naval Research, Arlington, VA [0401531] FX Supported by Office of Naval Research, Arlington, VA, Grant 0401531 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 2153-6996 BN 978-1-5090-3332-4 J9 INT GEOSCI REMOTE SE PY 2016 BP 991 EP 994 PG 4 WC Engineering, Electrical & Electronic; Geosciences, Multidisciplinary; Remote Sensing SC Engineering; Geology; Remote Sensing GA BG3QG UT WOS:000388114601027 ER PT S AU Park, J Johnson, JT Ouellette, J AF Park, Jeonghwan Johnson, Joel T. Ouellette, Jeffrey GP IEEE TI MODELING POLARIMETRIC SEA SURFACE SPECULAR SCATTERING FOR GNSS-R APPLICATIONS SO 2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT 36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS) CY JUL 10-15, 2016 CL Beijing, PEOPLES R CHINA SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers, Geoscience & Remote Sensing Soc, NSSC DE Bistatic scattering; rough surface scattering; GPS signal; remote sensing ID OCEAN AB A study of the polarimetric properties of near specular scattered fields from rough surfaces is reported using a circular polarization basis. Such studies are relevant for Global Navigation Satellite System-Reflectometry (GNSS-R) remote sensing of the sea surface. Particular emphasis in the study is placed on the use of field correlations for the remote sensing of wind direction over the sea surface. C1 [Park, Jeonghwan; Johnson, Joel T.] Ohio State Univ, Dept Elect & Comp Engn, Electrosci Lab, Columbus, OH 43212 USA. [Ouellette, Jeffrey] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. RP Park, J (reprint author), Ohio State Univ, Dept Elect & Comp Engn, Electrosci Lab, Columbus, OH 43212 USA. EM park.1558@osu.edu; johnson.1374@osu.edu; Jeffrey.ouellette@nrl.navy.mil 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 2153-6996 BN 978-1-5090-3332-4 J9 INT GEOSCI REMOTE SE PY 2016 BP 1903 EP 1904 PG 2 WC Engineering, Electrical & Electronic; Geosciences, Multidisciplinary; Remote Sensing SC Engineering; Geology; Remote Sensing GA BG3QG UT WOS:000388114602002 ER PT S AU Hwang, PA Li, XF Zhang, BA Walsh, EJ AF Hwang, Paul A. Li, Xiaofeng Zhang, Biao Walsh, Edward J. GP IEEE TI FETCH-LIMITED SURFACE WAVE GROWTH INSIDE TROPICAL CYCLONES AND HURRICANE WIND SPEED RETRIEVAL SO 2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT 36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS) CY JUL 10-15, 2016 CL Beijing, PEOPLES R CHINA SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers, Geoscience & Remote Sensing Soc, NSSC ID SPECTRA; OCEAN; MODEL C1 [Hwang, Paul A.] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. [Li, Xiaofeng] NOAA NESDIS, GST, College Pk, MD USA. [Zhang, Biao] Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing, Jiangsu, Peoples R China. [Zhang, Biao] Jiangsu Res Ctr Ocean Survey & Technol, Nanjing, Jiangsu, Peoples R China. [Walsh, Edward J.] NOAA, Div Phys Sci, Earth Syst Res Lab, Boulder, CO USA. RP Hwang, PA (reprint author), Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. NR 21 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 978-1-5090-3332-4 J9 INT GEOSCI REMOTE SE PY 2016 BP 2205 EP 2208 PG 4 WC Engineering, Electrical & Electronic; Geosciences, Multidisciplinary; Remote Sensing SC Engineering; Geology; Remote Sensing GA BG3QG UT WOS:000388114602081 ER PT S AU Yan, JB Gogineni, S Braaten, D Brozena, J Rodriguez-Morales, F Arnold, E AF Yan, J. B. Gogineni, S. Braaten, D. Brozena, J. Rodriguez-Morales, F. Arnold, E. GP IEEE TI ULTRA-WIDEBAND RADARS OPERATING OVER THE FREQUENCY RANGE OF 2-18 GHZ FOR MEASUREMENTS ON TERRESTRIAL SNOW AND ICE SO 2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT 36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS) CY JUL 10-15, 2016 CL Beijing, PEOPLES R CHINA SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers, Geoscience & Remote Sensing Soc, NSSC DE Airborne radar; remote sensing; ultra-wideband; cryosphere; snow AB In this paper, we present the development of an ultra-wideband microwave radar for fine-resolution measurements of snow. The radar was developed for operation on a Twin Otter aircraft with a nominal survey altitude of 500 m. The radar is designed to operate in frequency modulated continuous wave (FM-CW) mode from 2 to 18 GHz. The radar has a total transmit power is of 1.5 W and a vertical resolution of 1.6 cm as demonstrated experimentally. The radar has two modes of operation: snow sounding mode for snow thickness measurements and accumulation mapping, and side-looking mode for snow backscatter measurements and imaging. The radar system was flown from Barrow, Alaska in spring 2015 and 2016 as a part of the Naval Research Laboratory sea ice survey campaign to characterize sea ice and snow on sea ice. Between February and March 2016, we also took advantage of radar test flights in Colorado to conduct terrestrial snow measurements over the alpine areas. Sample radar data from the field campaigns will be presented. C1 [Yan, J. B.; Gogineni, S.; Braaten, D.; Rodriguez-Morales, F.; Arnold, E.] Univ Kansas, Ctr Remote Sensing Ice Sheets CReSIS, Lawrence, KS 66045 USA. [Brozena, J.] US Navy, Res Lab, Marine Phys Branch, Washington, DC 20375 USA. RP Yan, JB (reprint author), Univ Kansas, Ctr Remote Sensing Ice Sheets CReSIS, Lawrence, KS 66045 USA. FU NRL [N00173-13-C-2032, 61153N]; NSF [ANT-0424589]; NASA [NNX10AT68G] FX This work was supported by the NRL under contract N00173-13-C-2032. Funding for the Arctic flight was provided by NRL under Program Element 61153N. Early versions of the snow radar were developed with partial support from the NSF under Grant ANT-0424589, and from the NASA under Grant NNX10AT68G. 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 978-1-5090-3332-4 J9 INT GEOSCI REMOTE SE PY 2016 BP 7078 EP 7081 PG 4 WC Engineering, Electrical & Electronic; Geosciences, Multidisciplinary; Remote Sensing SC Engineering; Geology; Remote Sensing GA BG3QG UT WOS:000388114606221 ER PT S AU Klapotke, TM Chapman, RD AF Klapoetke, Thomas M. Chapman, Robert D. BE Mingos, DMP TI Progress in the Area of High Energy Density Materials SO 50 YEARS OF STRUCTURE AND BONDING - THE ANNIVERSARY VOLUME SE Structure and Bonding LA English DT Review; Book Chapter DE Difluoramine compounds; Explosives; Fluorine explosives; High-nitrogen compounds; N-oxides ID BOND-DISSOCIATION ENERGIES; NITROGEN-RICH SALTS; DETONATION PROPERTIES; THERMAL-STABILITY; DERIVATIVES; TETRAZOLE; HEATS; DFT; SPECTROSCOPY; TRIFLUORIDE AB Great strides have been made in increasing performance and decreasing sensitivity in energetic materials since the first commercialization of nitroglycerine (NG) in the form of dynamite in 1867 by Alfred Nobel. However, the high energy manufacturers continue to rely on traditional chemicals to meet their needs. New energetic materials must be developed to extend their capabilities and handling capabilities. The new materials which have been prepared recently have led to new possibilities. Important advances have been made especially in the area of high-nitrogen compounds, organic difluoramine derivatives. Computational simulations have also led not only to a greater insight into the basic thermodynamics and kinetics of these materials but also their practical behavior in the field. This chapter summarizes new developments that have been achieved since Volume 126 of Structure and Bonding, which was published in 2007 and gave a comprehensive review of the field. C1 [Klapoetke, Thomas M.] Ludwig Maximilian Univ Munich, Dept Chem, Energet Mat Res, D-81377 Munich, Germany. [Chapman, Robert D.] Naval Air Syst Command, Naval Air Warfare Ctr, Res & Intelligence Dept, Res Div,Weap Div,Chem Branch Code 4F0000D, China Lake, CA 93555 USA. RP Klapotke, TM (reprint author), Ludwig Maximilian Univ Munich, Dept Chem, Energet Mat Res, D-81377 Munich, Germany. EM tmk@cup.uni-muenchen.de; rchapman@aol.com NR 66 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 0081-5993 BN 978-3-319-35138-4; 978-3-319-35136-0 J9 STRUCT BOND JI Struct. Bond. PY 2016 VL 172 BP 49 EP 63 DI 10.1007/430_2015_190 D2 10.1007/978-3-319-35138-4 PG 15 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA BH0KE UT WOS:000395373500005 ER PT S AU Schaum, A AF Schaum, Alan BE Bruzzone, L Bovolo, F TI Clairvoyant Fusion: A new methodology for designing robust detection algorithms SO IMAGE AND SIGNAL PROCESSING FOR REMOTE SENSING XXII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Image and Signal Processing for Remote Sensing XXII CY SEP 26-28, 2016 CL Edinburgh, SCOTLAND SP SPIE DE clairvoyant fusion; target detection; multispectral; hyperspectral ID CONTINUUM FUSION AB The principles of clairvoyant fusion (CF) are summarized. CF is a new methodology for producing robust solutions to composite hypothesis testing problems. Mathematical methods that have been used to find closed-form solutions are reviewed. A second-stage fusion process is also described, which is guaranteed to produce unbeatable detection algorithms. C1 [Schaum, Alan] Naval Res Lab, Washington, DC 20375 USA. RP Schaum, A (reprint author), Naval Res Lab, Washington, DC 20375 USA. NR 25 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0412-4; 978-1-5106-0413-1 J9 PROC SPIE PY 2016 VL 10004 AR 100040C DI 10.1117/12.2240092 PG 7 WC Engineering, Electrical & Electronic; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BG9FP UT WOS:000393154600011 ER PT S AU Boglione, L Goodman, J AF Boglione, Luciano Goodman, Joel GP IEEE TI Determination of Multi-Port Noise Parameters SO 2016 46TH EUROPEAN MICROWAVE CONFERENCE (EUMC) SE European Microwave Conference LA English DT Proceedings Paper CT 46th European Microwave Conference (EuMC) CY OCT 04-06, 2016 CL London, ENGLAND SP APS AB The paper outlines the main results of a novel and comprehensive analysis for the determination of the noise parameters of linear noisy microwave networks with any number of ports. The well-established approach by Lane for the case of linear 2 port networks becomes a particular case of this analysis. A thorough discussion of the results identifies practical requirements as well as constraints for a successful noise characterization of any N-port networks. The noise parameters of a passive 4 port network are determined to validate the analysis against measurements. This paper is the first demonstration of a method to determine the noise parameters of a linear network with any number of ports. C1 [Boglione, Luciano; Goodman, Joel] Naval Res Lab, Washington, DC 20375 USA. RP Boglione, L (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM luciano.boglione@nrl.navy.mil; joel.goodman@nrl.navy.mil FU US Office of Naval Research, Arlington, VA FX The authors would like to thank Dr. George Stantchev, Naval Research Laboratory, for discussions on matrix properties. This work has been sponsored by the US Office of Naval Research, Arlington, VA. Opinions, interpretations, conclusions, and recommendations are those of the authors and are not necessarily endorsed by the United States Government NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2325-0305 BN 978-2-87487-043-9 J9 EUR MICROW CONF PY 2016 BP 389 EP 392 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG9QA UT WOS:000393581100098 ER PT S AU Shin, S Guyette, AC Naglich, EJ AF Shin, Sanghoon Guyette, Andrew C. Naglich, Eric J. GP IEEE TI Low-loss Self-Switching Bandstop Filter SO 2016 46TH EUROPEAN MICROWAVE CONFERENCE (EUMC) SE European Microwave Conference LA English DT Proceedings Paper CT 46th European Microwave Conference (EuMC) CY OCT 04-06, 2016 CL London, ENGLAND SP APS DE Bandstop filter; notch filter; switchable notch filter; switchable bandstop filter AB A new switchable low-loss bandstop filter is presented based on an indirect switching method combined with all-pass coupled lines. The proposed design allows switching between an all-pass mode and a bandstop filter mode for On/Off operation of a bandstop response. Due to the location of the switch, which is outside of the through line, the passband insertion loss is drastically improved with this new method compared with a conventional switchable bandstop filter configuration. In addition, the method provides consistent group delay throughout the passband in both the all-pass mode and the bandstop filter mode, which is a capability that is not commonly available in conventional multi-path-type switched filter approaches. A 4-pole prototype switchable notch filter centered at 1090 MHz with 14 MHz 30-dB bandwidth was fabricated and measured for demonstration. C1 [Shin, Sanghoon; Guyette, Andrew C.; Naglich, Eric J.] US Naval Res Lab, Washington, DC 20375 USA. RP Shin, S (reprint author), US Naval Res Lab, Washington, DC 20375 USA. FU Defense Advanced Research Projects Agency (DARPA) FX This research was developed with funding from the Defense Advanced Research Projects Agency (DARPA). 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 2325-0305 BN 978-2-87487-043-9 J9 EUR MICROW CONF PY 2016 BP 882 EP 885 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG9QA UT WOS:000393581100219 ER PT J AU Griffin, C Rajtmajer, S Squicciarini, A AF Griffin, Christopher Rajtmajer, Sarah Squicciarini, Anna GP IEEE TI Invited Paper: A model of paradoxical privacy behavior in users and online sites SO 2016 IEEE 2ND INTERNATIONAL CONFERENCE ON COLLABORATION AND INTERNET COMPUTING (IEEE CIC) LA English DT Proceedings Paper CT 2nd IEEE International Conference on Collaboration and Internet Computing (IEEE CIC) CY NOV 01-03, 2016 CL Pittsburgh, PA SP IEEE, IEEE Comp Soc, Univ Pittsburgh, Sch Informat Sci, Drexel Univ, Coll Comp & Informat, RMIT Univ, Zhejiang Univ DE Privacy; users behavior; control ID PERCEIVED CONTROL; INFORMATION AB Recent privacy research has identified some paradoxical behavior that online users often display, such as claiming to be conservative and then actually oversharing. In particular, recent work by Brandimarte et al. [1] discussed an apparent privacy paradox in online interactions. According to the study, users tend to over-disclose private information if they perceive to have control over the disclosure of their content. In this paper, we formally explain this apparent paradox in user privacy behavior as a straightforward optimization of comfort with sharing and perceived control. We describe the interests of a social network site in managing user privacy options. Namely, a site seeks to maximize perceived user control, while managing costs associated with providing that control. Furthermore, we extend the discussion for the case of dynamic time, and study an optimal control problem for the site as it tries to allocate resources toward user privacy control. C1 [Griffin, Christopher] US Naval Acad, Dept Math, Annapolis, MD 21402 USA. [Rajtmajer, Sarah] Penn State Univ, Dept Math, University Pk, PA 16802 USA. [Squicciarini, Anna] Penn State Univ, Coll Info Sci & Tech, University Pk, PA 16802 USA. RP Griffin, C (reprint author), US Naval Acad, Dept Math, Annapolis, MD 21402 USA. EM griffinch@ieee.org; sarah.rajtmajer@gmail.com; asquicciarini@ist.psu.edu FU National Science Foundation CAREER award [1453080] FX Portions of Dr. Squicciarini's work were supported by a National Science Foundation CAREER award, #1453080. NR 25 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-4607-2 PY 2016 BP 206 EP 211 DI 10.1109/CIC.2016.35 PG 6 WC Computer Science, Interdisciplinary Applications SC Computer Science GA BG9OQ UT WOS:000393501100023 ER PT J AU Dudas, PM Weirman, S Griffin, C AF Dudas, Patrick M. Weirman, Samantha Griffin, Christopher GP IEEE TI Little Data, Big Stories: Taking the Pulse of Large-Scaled Events on Twitter SO 2016 IEEE 2ND INTERNATIONAL CONFERENCE ON COLLABORATION AND INTERNET COMPUTING (IEEE CIC) LA English DT Proceedings Paper CT 2nd IEEE International Conference on Collaboration and Internet Computing (IEEE CIC) CY NOV 01-03, 2016 CL Pittsburgh, PA SP IEEE, IEEE Comp Soc, Univ Pittsburgh, Sch Informat Sci, Drexel Univ, Coll Comp & Informat, RMIT Univ, Zhejiang Univ DE social media; social network analysis; natural language processing; sentiment analysis AB With the proliferation of Big Data, Social Science projects being developed, this work takes a step back to design research avenues that specifically look at smaller, realtime Social Science projects. Building on an already developed platform, called Dynamic Twitter Network Analysis (DTNA), we build out exploration into multiple world event types, which were captured in real-time and used smaller datasets to allow the user the ability to seek location and topic-specific data collections in parallel to events occurring. With these datasets, we first establish what could be learned during the event that mimics larger projects in the same domain. Secondly, we compare the events to help bring awareness to strategies that can evolve as specific events occur. The datasets examined are from a 24-hour period from specific locations of relevance with a focus on polarizing events. This includes: 1) Boston Marathon Bombing, 2) Sandy Hook Elementary Shooting, 3) Gezi Park Riots, 4) Hurricane Sandy, 5) Batkid, Make-a-Wish Foundation, 6) Brazil World Cup Protests, and 7) 2014 NBA Championship (Game 5). These networks will be analyzed both from social network analysis (SNA) and natural language processing (NLP) approaches (including sentiment analysis and part of speech tagging comparing personal pronoun use). C1 [Dudas, Patrick M.] Penn State Univ, Appl Res Lab, State Coll, PA 16804 USA. [Weirman, Samantha] Penn State Univ, Coll Informat Sci & Technol, University Pk, PA 16802 USA. [Griffin, Christopher] US Naval Acad, Dept Math, Annapolis, MD 21402 USA. RP Dudas, PM (reprint author), Penn State Univ, Appl Res Lab, State Coll, PA 16804 USA. EM pmd19@psu.edu; ssweirman@psu.edu; griffin@usna.edu NR 36 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-4607-2 PY 2016 BP 474 EP 482 DI 10.1109/CIC.2016.69 PG 9 WC Computer Science, Interdisciplinary Applications SC Computer Science GA BG9OQ UT WOS:000393501100057 ER PT J AU Agnarsson, G Greenlaw, R Kantabutra, S AF Agnarsson, Geir Greenlaw, Raymond Kantabutra, Sanpawat TI The Structure of Rooted Weighted Trees Modeling Layered Cyber-security Systems SO ACTA CYBERNETICA LA English DT Article DE cyber-security model; duality; graph minors; rooted tree; security system; system attack; tree types; weighted rooted tree ID MAXIMUM-DENSITY SUBTREE AB In this paper we consider the structure and topology of a layered-security model in which the containers and their nestings are given in the form of a rooted tree T. A cyber-security model is an ordered three-tuple M = (T, C, P) where C and P are multisets of penetration costs for the containers and target acquisition values for the prizes that are located within the containers, respectively, both of the same cardinality as the set of the non-root vertices of T. The problem that we study is to assign the penetration costs to the edges and the target-acquisition values to the vertices of the tree T in such a way that minimizes the total prize that an attacker can acquire given a limited budget. The attacker breaks into containers starting at the root of T and once a vertex has been broken into, its children can be broken into by paying the associated penetration costs. The attacker must deduct the corresponding penetration cost from the budget, as each new container is broken into. For a given assignment of costs and target values we obtain a security system. We show that in general it is not possible to develop an optimal security system for a given cyber-security model M. We define P- and C-models where the penetration costs and prizes, respectively, all have unit value. We show that if T is a rooted tree such that any P- or C-model M = (T, C, P) has an optimal security system, then T is one of the following types: (i) a rooted path, (ii) a rooted star, (iii) a rooted 3-caterpillar, or (iv) a rooted 4-spider. Conversely, if T is one of these four types of trees, then we show that any P or C-model M = (T, C, P) does have an optimal security system. Finally, we study a duality between P- and C-models that allows us to translate results for P-models into corresponding results for C-models and vice versa. The results obtained give us some mathematical insights into how layered-security defenses should be organized. C1 [Agnarsson, Geir] George Mason Univ, Dept Math Sci, Fairfax, VA 22030 USA. [Greenlaw, Raymond] US Naval Acad, Dept Cyber Sci, Annapolis, MD 21402 USA. [Kantabutra, Sanpawat] Chiang Mai Univ, Dept Comp Engn, Theory Computat Grp, Chiang Mai 50200, Thailand. RP Agnarsson, G (reprint author), George Mason Univ, Dept Math Sci, Fairfax, VA 22030 USA. EM geir@math.gmu.edu; greenlaw@usna.edu; sanpawat@alumni.tufts.edu FU Office of Naval Research; Thailand Research Fund [RSA5480006] FX This work was supported by the Office of Naval Research. The work was also supported by Thailand Research Fund grant No. RSA5480006. - Finally, sincere thanks to the two anonymous referees for all their helpful comments and for spotting some well-hidden (and embarrassing!) typos. This greatly improved the presentation of the paper. NR 14 TC 0 Z9 0 U1 0 U2 0 PU UNIV SZEGED, FAC SCIENCE PI SZEGED PA C/O E SZABO, EXCHANGE LIBRARIAN, DUGONICS TER 13, PO BOX 393, SZEGED, 6701, HUNGARY SN 0324-721X J9 ACTA CYBERN JI Acta Cybern. PY 2016 VL 22 IS 4 BP 735 EP 769 DI 10.14232/actacyb.22.4.2016.2 PG 35 WC Computer Science, Cybernetics SC Computer Science GA EK0EM UT WOS:000393599500002 ER PT J AU Rutledge, KLG Houser, DS Finneran, JF AF Rutledge, Krysta L. Gasser Houser, Dorian S. Finneran, James F. TI Relating Click-Evoked Auditory Brainstem Response Waveforms to Hearing Loss in the Bottlenose Dolphin (Tursiops truncatus) SO AQUATIC MAMMALS LA English DT Article DE odontocete; bottlenose dolphin; Tursiops truncatus; hearing assessment; auditory steady-state response; auditory brainstem response; presbyeusis ID POTENTIALS; CETACEANS; SYSTEM; NOISE AB Comparisons between click-evoked auditory brainstem responses (ABR) and auditory steady-state responses (ASSR) were performed to determine if the click-evoked ABR could be used to predict hearing loss in the bottlenose dolphin (Tursiops truncatus). The ASSR was evoked using sinusoidal amplitude modulated tones at half octave frequency intervals from 20 to 160 kHz and utilized to determine the upper-frequency limit of hearing in each dolphin (i.e., the frequency at which threshold was equal to 120 dB re 1 mu Pa). The click-evoked ABR was then recorded following exposure to a moderate-amplitude click (peak-peak equivalent sound pressure level of 122 dB re 1 mu Pa, 5 to 100 mu s duration) and examined to determine if relationships existed among the upper-frequency limit of hearing and the amplitude/latency characteristics of the click-evoked ABR. The ASSR and click-evoked ABR were measured in six dolphins (4 males and 2 females, from 13 to 49 y of age) with varying hearing sensitivity and frequency range of hearing. A significant relationship existed between click-evoked ABR wave amplitudes and the upper-frequency limit of hearing, although the number of waves showing the relationship varied with the duration of the click. Test times for assessment using frequency-specific ASSR and click-evoked ABR were similar to 45 min and 1 min, respectively. With further definition of normative data, measurement of click-evoked ABRs could form the basis of an expedited electrophysiologic method for hearing screening in delphinids. C1 [Rutledge, Krysta L. Gasser] Washington Univ, Sch Med, Program Audiol & Commun Sci, 660 S Euclid Ave,Campus Box 8042, St Louis, MO 63110 USA. [Houser, Dorian S.] NMMF, 2240 Shelter Isl Dr,Suite 200, San Diego, CA 92106 USA. [Finneran, James F.] US Navy Marine Mammal Program, Space & Naval Warfare Syst Ctr Pacific, Code 71510,53560 Hull St, San Diego, CA 92152 USA. RP Rutledge, KLG (reprint author), Washington Univ, Sch Med, Program Audiol & Commun Sci, 660 S Euclid Ave,Campus Box 8042, St Louis, MO 63110 USA. EM gasserk@wustl.edu OI Houser, Dorian/0000-0002-0960-8528 FU U.S. Navy Living Marine Resources Program FX The authors would like to thank the animal care and training staff at the National Marine Mammal Foundation/U.S. Navy Marine Mammal Program for their assistance in animal training and data collection. Support for data collection was provided by the U.S. Navy Living Marine Resources Program (J. J. Finneran). This study was completed as a Capstone Project and submitted as part of the requirements for the degree of Doctor of Audiology (Au.D.) in the Program in Audiology & Communication Sciences (PACS) at Washington University School of Medicine (WUSM), St. Louis, Missouri. NR 37 TC 0 Z9 0 U1 1 U2 1 PU EUROPEAN ASSOC AQUATIC MAMMALS PI MOLINE PA C/O DR JEANETTE THOMAS, BIOLOGICAL SCIENCES, WESTERN ILLIONIS UNIV-QUAD CITIES, 3561 60TH STREET, MOLINE, IL 61265 USA SN 0167-5427 J9 AQUAT MAMM JI Aquat. Mamm. PY 2016 VL 42 IS 3 BP 339 EP 349 DI 10.1578/AM.42.3.2016.339 PG 11 WC Marine & Freshwater Biology; Zoology SC Marine & Freshwater Biology; Zoology GA EJ7LS UT WOS:000393403800009 ER PT J AU Anderson, TJ Koehler, AD Freitas, JA Weaver, BD Greenlee, JD Tadjer, MJ Imhoff, EA Hobart, KD Kub, FJ AF Anderson, T. J. Koehler, A. D. Freitas, J. A., Jr. Weaver, B. D. Greenlee, J. D. Tadjer, M. J. Imhoff, E. A. Hobart, K. D. Kub, F. J. TI Hyperspectral Electroluminescence Characterization of OFF-State Device Characteristics in Proton Irradiated High Voltage AlGaN/GaN HEMTs SO ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY LA English DT Article ID ELECTRON-MOBILITY TRANSISTORS; RADIATION-DAMAGE; GALLIUM NITRIDE; GAN; LUMINESCENCE; DEGRADATION AB Gallium nitride-based high electron mobility transistors (HEMTs) represent a critical next-generation technology for RF amplifiers. In this work, we implement electroluminescence (EL) imaging to study breakdown mechanisms under high voltage stress conditions in as-fabricated and proton irradiated devices. After irradiation, an increased breakdown voltage and reduced buffer leakage was observed and attributed to the formation of a back barrier structure due to carrier type conversion in the buffer layer from the introduction of donor trap levels near the conduction band. In addition to identifying high field regions associated with device failure, the hyperspectral filter enables spectrum extraction, identifying peaks in the 700 nm-900 nm region associated with both defects and hot electrons that are contributing to device failure, but no change in signature after irradiation implying that radiation-induced defects are non-radiative. Complementary photoluminescence spectroscopy identified a reduction in free carrier density consistent with the generation of compensating trap levels, supporting the proposed model. (C) 2016 The Electrochemical Society. All rights reserved. C1 [Anderson, T. J.; Koehler, A. D.; Freitas, J. A., Jr.; Weaver, B. D.; Greenlee, J. D.; Tadjer, M. J.; Imhoff, E. A.; Hobart, K. D.; Kub, F. J.] US Naval Res Lab, Washington, DC 20375 USA. RP Anderson, TJ (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM travis.anderson@nrl.navy.mil FU National Research Council Research Associateship Award at the Naval Research Laboratory; Office of Naval Research FX This research was performed while J. D. Greenlee held a National Research Council Research Associateship Award at the Naval Research Laboratory. Research at NRL was supported by the Office of Naval Research. The authors thank the NRL Institute for Nanocience for device fabrication support. NR 26 TC 0 Z9 0 U1 2 U2 2 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 2016 VL 5 IS 12 BP Q289 EP Q293 DI 10.1149/2.0281612jss PG 5 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA EJ9VX UT WOS:000393576300018 ER PT J AU Rowe, NC Schwamm, R McCarrin, MR Gera, R AF Rowe, Neil C. Schwamm, Riqui McCarrin, Michael R. Gera, Ralucca TI MAKING SENSE OF EMAIL ADDRESSES ON DRIVES SO JOURNAL OF DIGITAL FORENSICS SECURITY AND LAW LA English DT Article DE digital forensics; electronic mail; email; addresses; users; filtering; networks; visualization AB Drives found during investigations often have useful information in the form of email addresses, which can be acquired by search in the raw drive data independent of the file system. Using these data, we can build a picture of the social networks in which a drive owner participated, even perhaps better than investigating their online profiles maintained by social-networking services, because drives contain much data that users have not approved for public display. However, many addresses found on drives are not forensically interesting, such as sales and support links. We developed a program to filter these out using a Na ve Bayes classifier and eliminated 73.3% of the addresses from a representative corpus. We show that the byte-offset proximity of the remaining addresses found on a drive, their word similarity, and their number of co-occurrences over a corpus are good measures of association of addresses, and we built graphs using this data of the interconnections both between addresses and between drives. Results provided several new insights into our test data. C1 [Rowe, Neil C.; Schwamm, Riqui; McCarrin, Michael R.] US Naval Postgrad Sch, Dept Comp Sci, Monterey, CA 93943 USA. [Gera, Ralucca] US Naval Postgrad Sch, Appl Math Dept, Monterey, CA 93943 USA. RP Rowe, NC (reprint author), US Naval Postgrad Sch, Dept Comp Sci, Monterey, CA 93943 USA. EM ncrowe@nps.edu NR 14 TC 0 Z9 0 U1 0 U2 0 PU ASSOC DIGITAL FORENSICS, SECURITY & LAW PI FARMVILLE PA 201 HIGH ST, FARMVILLE, VA 23909 USA SN 1558-7215 EI 1558-7223 J9 J DIGIT FORENSICS SE JI J. Digit. Forensics Secur. Law PY 2016 VL 11 IS 2 SI SI BP 153 EP 173 PG 21 WC Computer Science, Information Systems SC Computer Science GA EJ7PA UT WOS:000393413400011 ER PT J AU Mansour, AN Kwabi, DG Quinlan, RA Lu, YC Yang, SH AF Mansour, Azzam N. Kwabi, David G. Quinlan, Ronald A. Lu, Yi-Chun Yang Shao-Horn TI Probing the Electrode-Electrolyte Interface in Cycled LiNi0.5Mn1.5O4 by XPS Using Mg and Synchrotron X-rays SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID LITHIUM-ION BATTERIES; HIGH-VOLTAGE SPINEL; PHOTOELECTRON-SPECTROSCOPY; FLUORINATED ELECTROLYTES; RECHARGEABLE BATTERIES; SURFACE-CHEMISTRY; RATE CAPABILITY; CATHODE; LINI0.5MN0.5O2; LIMN1.5NI0.5O4 AB X-ray photoelectron spectroscopy (XPS) was used to investigate the surface chemistry of high voltage spinel, LiNi0.5Mn1.5O4 (LNMO) positive electrodes cycled 5 and 10 times in Li-cells with 1 M LiPF6 in (3: 7) EC:DMC. The XPS spectra were collected using conventional Mg X-rays with energy of 1253.6 eV as well as synchrotron X-rays with energies of 2493.6 and 3498.4 eV in order to examine the depth distribution of various surface chemical species induced during cycling. The XPS spectra revealed a 5 - 10 nm surface layer of organic and LixPFyOz-type species formed as result of electrolyte decomposition, and a comparatively thinner layer composed of transition metal fluorides and LiF. These results suggest that electrolyte decomposition is a major contributor to parasitic reactions in LNMO battery electrochemistry. Limiting electrolyte decomposition with the use of solvents with wide electrochemical stability windows thus comprises a promising strategy for ensuring the practical feasibility of high voltage spinel materials in future Li-ion systems. (C) The Author(s) 2016. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. All rights reserved. C1 [Mansour, Azzam N.; Quinlan, Ronald A.] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA. [Kwabi, David G.; Lu, Yi-Chun; Yang Shao-Horn] MIT, Dept Mech Engn, Cambridge, MA 02139 USA. [Quinlan, Ronald A.] Christopher Newport Univ, Mol Biol & Chem, Newport News, VA 23606 USA. [Lu, Yi-Chun] Chinese Univ Hong Kong, Mech & Automat Engn, Shatin, Hong Kong, Peoples R China. RP Mansour, AN (reprint author), Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA.; Yang, SH (reprint author), MIT, Dept Mech Engn, Cambridge, MA 02139 USA. EM Azzam.Mansour@navy.mil; shaohorn@mit.edu OI Lu, Yi-Chun/0000-0003-1607-1615 FU MRSEC Program of the National Science Foundation [DMR-0819762]; Energy Efficiency and Renewable Energy, Office of FreedomCAR and Vehicle Technologies of the U.S. Department of Energy [DE-AC03-76SF00098]; Lawrence Berkeley National Laboratory; U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886] FX This work was supported in part by the MRSEC Program of the National Science Foundation under award number DMR-0819762 and the Assistant Secretary for the Energy Efficiency and Renewable Energy, Office of FreedomCAR and Vehicle Technologies of the U.S. Department of Energy under contract number DE-AC03-76SF00098 with the Lawrence Berkeley National Laboratory. The synchrotron XPS experiment was conducted on beamline X24A 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 number DE-AC02-98CH10886. We also thank Dr. Conan Weiland and Daniel Fischer of NIST for their assistance and guidance at the beamline, and Tadashi Kawaguchi for help with LNMO synthesis. NR 35 TC 0 Z9 0 U1 6 U2 6 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 2016 VL 163 IS 14 BP A2911 EP A2918 DI 10.1149/2.0331614jes PG 8 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA EK3TV UT WOS:000393852200009 ER PT J AU Tadjer, MJ Mahadik, NA Wheeler, VD Glaser, ER Ruppalt, L Koehler, AD Hobart, KD Eddy, CR Kub, FJ AF Tadjer, Marko J. Mahadik, Nadeemullah A. Wheeler, Virginia D. Glaser, Evan R. Ruppalt, Laura Koehler, Andrew D. Hobart, Karl D. Eddy, Charles R., Jr. Kub, Fritz J. TI Communication-A (001) beta-Ga2O3 MOSFET with+2.9 V Threshold Voltage and HfO2 Gate Dielectric SO ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY LA English DT Article ID MOVPE AB An MOS transistor fabricated on (001) beta-Ga2O3 exfoliated from a commercial (-201) beta-Ga2O3 substrate is reported. A maximum drain current of 11.1 mA/mm was measured, and a non-destructive breakdown was reached around 80 V in the off state. Threshold voltage of +2.9 V was extracted at 0.1 V drain bias, and peak transconductance of 0.18 mS/mm was measured at V-DS = 1 V, corresponding to a field effect mobility of 0.17 cm(2)/Vs. Hall effect and electron spin resonance data suggested that electron conductivity was due primarily to O vacancy donors (V-O(+)) with an estimated density of 2.3 x 10(17) (+/- 50%) cm(-3). (C) The Author(s) 2016. Published by ECS. All rights reserved. C1 [Tadjer, Marko J.; Mahadik, Nadeemullah A.; Wheeler, Virginia D.; Glaser, Evan R.; Ruppalt, Laura; Koehler, Andrew D.; Hobart, Karl D.; Eddy, Charles R., Jr.; Kub, Fritz J.] US Naval Res Lab, Washington, DC 20375 USA. RP Tadjer, MJ (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM marko.tadjer@nrl.navy.mil FU Office of Naval Research (ONR) FX The authors are sincerely grateful to Dr. Jeremy Robinson and Dr. Joshua Caldwell (NRL) for assistance with Ga2O3 exfoliation, Dr. Akito Kuramata (Novel Crystal Technology) for insightful discussions, and the NRL Nanoscience Institute staff (Walter Spratt, Dean St. Amand) for fabrication equipment maintenance. Research at NRL was supported by the Office of Naval Research (ONR). NR 19 TC 4 Z9 4 U1 1 U2 1 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 2016 VL 5 IS 9 BP P468 EP P470 DI 10.1149/2.0061609jss PG 3 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA EC2VS UT WOS:000387983000012 ER PT J AU Davis, DT Chung, TH Clement, MR Day, MA AF Davis, Duane T. Chung, Timothy H. Clement, Michael R. Day, Michael A. GP IEEE TI Consensus-Based Data Sharing for Large-Scale Aerial Swarm Coordination in Lossy Communications Environments SO 2016 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2016) LA English DT Proceedings Paper CT IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) CY OCT 09-14, 2016 CL Daejeon, SOUTH KOREA SP IEEE, RSJ ID SYSTEMS AB Increasing unmanned aerial vehicle (UAV) capabilities and decreasing costs have facilitated growing interest in the development of large, multi-UAV systems, or swarms. The constrained communications environments in which these swarms operate, however, have limited the development of behaviors that require a high degree of deliberative coordination. This work presents two algorithms that use a consensus algorithm approach to reliably exchange information throughout large swarms as a means of facilitating swarm behavior coordination. Results from experiments conducted in simulation and live-fly exercises are presented and discussed. C1 [Davis, Duane T.; Chung, Timothy H.; Clement, Michael R.; Day, Michael A.] Naval Postgrad Sch, Adv Robot Syst Engn Lab, Monterey, CA 93943 USA. RP Davis, DT (reprint author), Naval Postgrad Sch, Adv Robot Syst Engn Lab, Monterey, CA 93943 USA. EM dtdavil@nps.edu; thchung@nps.edu; mrclemen@nps.edu; maday@nps.edu NR 23 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-3762-9 PY 2016 BP 3801 EP 3808 PG 8 WC Computer Science, Artificial Intelligence; Robotics SC Computer Science; Robotics GA BG7XO UT WOS:000391921703122 ER PT J AU Li, J Ye, DH Chung, T Kolsch, M Wachs, J Bouman, C AF Li, Jing Ye, Dong Hye Chung, Timothy Kolsch, Mathias Wachs, Juan Bouman, Charles GP IEEE TI Multi-Target Detection and Tracking from a Single Camera in Unmanned Aerial Vehicles (UAVs) SO 2016 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2016) LA English DT Proceedings Paper CT IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) CY OCT 09-14, 2016 CL Daejeon, SOUTH KOREA SP IEEE, RSJ AB Despite the recent flight control regulations, Unmanned Aerial Vehicles (UAVs) are still gaining popularity in civilian and military applications, as much as for personal use. Such emerging interest is pushing the development of effective collision avoidance systems. Such systems play a critical role UAVs operations especially in a crowded airspace setting. Because of cost and weight limitations associated with UAVs payload, camera based technologies are the de-facto choice for collision avoidance navigation systems. This requires multi-target detection and tracking algorithms from a video, which can be run on board efficiently. While there has been a great deal of research on object detection and tracking from a stationary camera, few have attempted to detect and track small UAVs from a moving camera. In this paper, we present a new approach to detect and track UAVs from a single camera mounted on a different UAV. Initially, we estimate background motions via a perspective transformation model and then identify distinctive points in the background subtracted image. We find spatio-temporal traits of each moving object through optical flow matching and then classify those candidate targets based on their motion patterns compared with the background. The performance is boosted through Kalman filter tracking. This results in temporal consistency among the candidate detections. The algorithm was validated on video datasets taken from a UAV. Results show that our algorithm can effectively detect and track small UAVs with limited computing resources. C1 [Li, Jing; Ye, Dong Hye; Wachs, Juan; Bouman, Charles] Purdue Univ, Dept Elect & Comp Engn & Ind Engn, W Lafayette, IN 47907 USA. [Chung, Timothy; Kolsch, Mathias] Naval Postgrad Sch, Dept Syst Engn & Comp Sci, Monterey, CA 93943 USA. RP Li, J (reprint author), Purdue Univ, Dept Elect & Comp Engn & Ind Engn, W Lafayette, IN 47907 USA. EM li1463@purdue.edu; yed@purdue.edu; thchung@nps.edu; kolsch@nps.edu; jpwachs@purdue.edu; bouman@purdue.edu FU Naval Postgraduate School [NPS-BAA-14-004] FX This work was supported by the Naval Postgraduate School Grant NPS-BAA-14-004. NR 21 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-3762-9 PY 2016 BP 4992 EP 4997 PG 6 WC Computer Science, Artificial Intelligence; Robotics SC Computer Science; Robotics GA BG7XO UT WOS:000391921705004 ER PT B AU Lader, P Fredriksson, DW Volent, Z DeCew, J Rosten, T Strand, IM AF Lader, Pal Fredriksson, David W. Volent, Zsolt DeCew, Jud Rosten, Trond Strand, Ida M. GP ASME TI WAVE RESPONSE OF CLOSED FLEXIBLE BAGS SO PROCEEDINGS OF THE ASME 35TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING , 2016, VOL 6 LA English DT Proceedings Paper CT 35th ASME International Conference on Ocean, Offshore and Arctic Engineering CY JUN 19-24, 2016 CL Busan, SOUTH KOREA SP ASME, Ocean Offshore & Arctic Engn Div ID FILLED MEMBRANE AB Recent environmental considerations, as salmon lice, escape of farmed fish and release of nutrients, have prompted the aquaculture industry to consider the use of closed fish production systems. The use of such systems is considered as one potential way of expanding the salmon production in Norway. To better understand the response in waves of such bags, experiments were conducted with a series of 1:30 scaled models of closed flexible bags. The bags and floater were moored in a wave tank and subjected to series of regular waves (wave period between 0.5 and 1.5s and wave steepness 1/15, 1/30 and 1/60). Three different geometries were investigated; cylindrical, spherical and elliptical, and the models was both tested deflated (70% filling level) and inflated (100% filling level). Incident waves were measured together with the horizontal and vertical motion of the floater in two points (front and aft). Visual observations of the response were also done using cameras. The main finding from the experiments were that a deflated bag was more wave compliant than an inflated bag, and that the integrity (whether water entered or left the bag over the floater) was challenged for the inflated bags even for smaller waves (identified as wave condition B (1.0mS. This study is supported partially by Chief of Navy Research (CCW), NSF Grand AGS-0964396 (KL), and AGS-1153323 (STW). NR 17 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 978-0-7354-1367-2 J9 AIP CONF PROC PY 2016 VL 1720 AR 040021 DI 10.1063/1.4943832 PG 5 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA BG8RW UT WOS:000392692000031 ER PT J AU Harrison, WL Graves, I Procter, A Becchi, M Allwein, G AF Harrison, William L. Graves, Ian Procter, Adam Becchi, Michela Allwein, Gerard GP IEEE TI A Programming Model for Reconfigurable Computing Based in Functional Concurrency SO 2016 11TH INTERNATIONAL SYMPOSIUM ON RECONFIGURABLE COMMUNICATION-CENTRIC SYSTEMS-ON-CHIP (RECOSOC) LA English DT Proceedings Paper CT 11th International Symposium on Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC) CY JUN 27-29, 2016 CL Tallinn, ESTONIA ID HARDWARE; FPGA AB FPGA programmability remains a concern with respect to the broad adoption of the technology. One reason for this is simple: FPGA applications are frequently implementations of concurrent algorithms that could be most directly rendered in concurrent languages, but there is little or no first-class support for concurrent applications in conventional hardware description languages. It stands to reason that FPGA programmability would be enhanced in a hardware description language with first-class concurrency. The starting point for this paper is a functional hardware description language with built-in support for concurrency called ReWire. Because it is a concurrent functional language, ReWire supports the elegant expression of common concurrency paradigms; we illustrate this with several case studies. C1 [Harrison, William L.; Graves, Ian; Procter, Adam] Univ Missouri, Dept Comp Sci, Columbia, MO 65211 USA. [Becchi, Michela] Univ Missouri, Dept Elect & Comp Engn, Columbia, MO 65211 USA. [Allwein, Gerard] US Naval Res Lab, Washington, DC USA. RP Harrison, WL (reprint author), Univ Missouri, Dept Comp Sci, Columbia, MO 65211 USA. NR 19 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-2520-6 PY 2016 PG 8 WC Engineering, Electrical & Electronic SC Engineering GA BG8ET UT WOS:000392264900020 ER PT J AU Hutchinson, MN Estrella, S Mashanovitch, M AF Hutchinson, Meredith N. Estrella, Steven Mashanovitch, Milan GP IEEE TI Packaged High Power MUTC Photodetectors for High SFDR Applications SO 2016 IEEE AVIONICS AND VEHICLE FIBER-OPTICS AND PHOTONICS CONFERENCE (AVFOP) LA English DT Proceedings Paper CT IEEE Avionics and Vehicle Fiber-Optics and Photonics Conference (AVFOP) CY OCT 31-NOV 03, 2016 CL Long Beach, CA SP IEEE, Georgia Tech Res Inst C1 [Hutchinson, Meredith N.] US Naval Res Lab, Washington, DC 20375 USA. [Estrella, Steven; Mashanovitch, Milan] Freedom Photon, Santa Barbara, CA USA. RP Hutchinson, MN (reprint author), US Naval Res Lab, Washington, DC 20375 USA. FU NAVAIR SBIR [N68335-15-C-0308] FX This work was supported in part by NAVAIR SBIR, Contract N68335-15-C-0308. NR 9 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-1599-3 PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BG8CN UT WOS:000392211700022 ER PT S AU Parrish, A Sobiesk, E AF Parrish, Allen Sobiesk, Edward GP IEEE TI Developing ABET Criteria for Undergraduate Cybersecurity Programs SO 2016 IEEE FRONTIERS IN EDUCATION CONFERENCE (FIE) SE Frontiers in Education Conference LA English DT Proceedings Paper CT IEEE Frontiers in Education Conference (FIE) CY OCT 12-15, 2016 CL Gannon Univ, Erie, PA SP Amer Soc Engn Educ Educ Res Methods Div, Inst Elect & Elect Engineers Comp Soc, Inst Elect & Elect Engineers Educ Soc, IEEE Comp Soc, Erie, Inst Elect & Elect Engineers HO Gannon Univ DE Cybersecurity; accreditation; program assessment AB This special session will introduce current work on program criteria currently being developed for use by ABET in accrediting undergraduate cybersecurity programs. It will provide a status report on current efforts in this area, along with expectations for future development and deployment of these criteria. C1 [Parrish, Allen] US Naval Acad, Dept Cyber Sci, Annapolis, MD 21402 USA. [Sobiesk, Edward] Army Cyber Inst, West Point, NY 10996 USA. RP Parrish, A (reprint author), US Naval Acad, Dept Cyber Sci, Annapolis, MD 21402 USA. EM aparrish@usna.edu; edward.sobiesk@usna.edu 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 0190-5848 BN 978-1-5090-1790-4 J9 PROC FRONT EDUC CONF PY 2016 PG 2 WC Education, Scientific Disciplines; Engineering, Electrical & Electronic SC Education & Educational Research; Engineering GA BG8IT UT WOS:000392331500211 ER PT S AU Canedy, CL Warren, MV Merritt, CD Bewley, WW Kim, M Kim, CS Vurgaftman, I Meyer, JR Fradet, M Frez, CF Briggs, RM Forouhar, S AF Canedy, C. L. Warren, M. V. Merritt, C. D. Bewley, W. W. Kim, M. Kim, C. S. Vurgaftman, I. Meyer, J. R. Fradet, M. Frez, C. F. Briggs, R. M. Forouhar, S. GP IEEE TI Interband Cascade Lasers Emitting at 4.6-6.1 mu m SO 2016 INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC) SE IEEE International Semiconductor Laser Conference LA English DT Proceedings Paper CT 25th International Semiconductor Laser Conference (ISLC) CY SEP 12-15, 2016 CL Kobe, JAPAN DE Interband Cascade Laser; Mid-infrared; Diode Laser; Chemical Sensing AB We report interb and cascade lasers exhibiting improved performance in the lambda = 4.6-6.1 mu mon spectral range. For pulsed operation at 300 K, the threshold current density of a broad area device emitting at lambda approximate to 4.8 mu m is 220 A/cm(2), while its external differential quantum efficiency per stage is 339. C1 [Canedy, C. L.; Warren, M. V.; Merritt, C. D.; Bewley, W. W.; Kim, C. S.; Vurgaftman, I.; Meyer, J. R.] Naval Res Lab, Code 5613, Washington, DC 20375 USA. [Kim, M.] Sotera Def Solut Inc, Crofton, MD 21114 USA. [Fradet, M.; Frez, C. F.; Briggs, R. M.; Forouhar, S.] Jet Prop Lab, Pasadena, CA 91109 USA. RP Warren, MV (reprint author), Naval Res Lab, Code 5613, Washington, DC 20375 USA. EM mwir_laser@nrl.navy.mil NR 9 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2326-5442 BN 978-4-8855-2306-9 J9 IEEE INT SEMICONDUCT PY 2016 PG 2 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG8DS UT WOS:000392249800036 ER PT S AU Spott, A Peters, J Davenport, ML Stanton, EJ Zhang, C Bewley, WW Merritt, CD Vurgaftman, I Kim, CS Meyer, JR Kirch, J Mawst, LJ Botez, D Bowers, JE AF Spott, Alexander Peters, Jon Davenport, Michael L. Stanton, Eric J. Zhang, Chong Bewley, William W. Merritt, Charles D. Vurgaftman, Igor Kim, Chul Soo Meyer, Jerry R. Kirch, Jeremy Mawst, Luke J. Botez, Dan Bowers, John E. GP IEEE TI Distributed Feedback Quantum Cascade Lasers on Silicon SO 2016 INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC) SE IEEE International Semiconductor Laser Conference LA English DT Proceedings Paper CT 25th International Semiconductor Laser Conference (ISLC) CY SEP 12-15, 2016 CL Kobe, JAPAN DE Quantum Cascade Laser; Distributed Feedback Laser; Mid-infrared; Silicon Photonics AB We demonstrate disfributed feedback (DFB) quantum cascade lasers (QCLs) that are heterogeneously integrated on silicon. The lasers emit up to 210 mW of pulsed power at room temperature, and operate up to 100 degrees C. C1 [Spott, Alexander; Peters, Jon; Davenport, Michael L.; Stanton, Eric J.; Zhang, Chong; Bowers, John E.] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA. [Bewley, William W.; Merritt, Charles D.; Vurgaftman, Igor; Kim, Chul Soo; Meyer, Jerry R.] Naval Res Lab, Code 5613, Washington, DC 20375 USA. [Kirch, Jeremy; Mawst, Luke J.; Botez, Dan] Univ Wisconsin, Dept Elect & Comp Engn, 1415 Johnson Dr, Madison, WI 53706 USA. RP Spott, A (reprint author), Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA. EM spott@ece.ucsb.edu FU Office of Naval Research (ONR) [N00014-13-C-0147]; National Science Foundation (NSF) [DGE 1144085] FX This work was supported by the Office of Naval Research (ONR) (N00014-13-C-0147) and National Science Foundation (NSF) (DGE 1144085). 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 2326-5442 BN 978-4-8855-2306-9 J9 IEEE INT SEMICONDUCT PY 2016 PG 2 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG8DS UT WOS:000392249800038 ER PT J AU Nemeth, B AF Nemeth, Bence TI Making defense planning meaningful: the evolution of strategic guidance in the Hungarian Ministry of Defense SO DEFENCE AND SECURITY ANALYSIS LA English DT Article DE Defense planning; strategic guidance; Hungary; strategic foresight analysis; Hungarian Defense Force; planning programming budgeting system AB Hungary, a former communist state, adapted a Western-style defense planning system during the 1990s and 2000s. Although on the surface the elements of this planning system were similar to the planning programming budgeting system (PPBS) developed by the US Department of Defense, strategic guidance for defense planning has not been properly developed until recently. Thus, albeit PPBS-based defense plans were developed in the Hungarian Ministry of Defense (Hungarian MoD) regularly, they lacked both an expression of clear priorities and strategic focus. This article delineates the evolution of strategic guidance in the Hungarian MoD concentrating on current developments, and introduces the newly elaborated analytical concepts and tools, which helped to create needed strategic guidance in Hungary. C1 [Nemeth, Bence] Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA. RP Nemeth, B (reprint author), Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA. EM bence.nemeth@zoho.com NR 19 TC 0 Z9 0 U1 1 U2 1 PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD PI ABINGDON PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1475-1798 EI 1475-1801 J9 DEF SECUR ANAL JI Def. Secur. Anal. PY 2016 VL 32 IS 4 BP 321 EP 335 DI 10.1080/14751798.2016.1233693 PG 15 WC International Relations SC International Relations GA EI7DM UT WOS:000392657800005 ER PT J AU Boglione, L AF Boglione, Luciano GP IEEE TI Multi-Port Noise Parameter Determination SO PROCEEDINGS OF THE 2016 TEXAS SYMPOSIUM ON WIRELESS AND MICROWAVE CIRCUITS AND SYSTEMS (WMCS) LA English DT Proceedings Paper CT Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) CY MAR 31-APR 01, 2016 CL Waco, TX SP Baylor Univ, Wireless & Microwave Circuits & Syst Lab, IEEE Microwave Theory & Tech Soc AB The paper outlines the main results of a novel and comprehensive analysis for the determination of the noise parameters of linear noisy microwave networks with any number of ports. The well-established approach by Lane for the case of linear 2 port networks becomes a particular case of this analysis. A thorough discussion of the results identifies practical requirements as well as constraints for a successful noise characterization of any N-port networks. The noise parameters of a circulator are determined to validate the analysis against measurements. This paper is the first demonstration of a method to determine the noise parameters of a linear network with any number of ports. C1 [Boglione, Luciano] Naval Res Lab, Washington, DC 20375 USA. RP Boglione, L (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM luciano.boglione@nrl.navy.mil FU US Office of Naval Research, Arlington, VA FX The authors would like to thank Dr. George Stantchev, NRL. This work has been sponsored by the US Office of Naval Research, Arlington, VA. Opinions, interpretations, conclusions, and recommendations are those of the authors and are not necessarily endorsed by the United States Government NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-2755-2 PY 2016 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG8EP UT WOS:000392264500012 ER PT J AU Latham, C Baylis, C Cohen, L Marks, RJ AF Latham, Casey Baylis, Charles Cohen, Lawrence Marks, Robert J., II GP IEEE TI Dynamic Spectral Mask Construction for Radar Transmission Based on Communication Receiver Locations SO PROCEEDINGS OF THE 2016 TEXAS SYMPOSIUM ON WIRELESS AND MICROWAVE CIRCUITS AND SYSTEMS (WMCS) LA English DT Proceedings Paper CT Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) CY MAR 31-APR 01, 2016 CL Waco, TX SP Baylor Univ, Wireless & Microwave Circuits & Syst Lab, IEEE Microwave Theory & Tech Soc DE cognitive radar; spectral mask; power amplifiers; interchannel interference ID COGNITIVE RADIO AB Dynamic spectrum allocation is becoming a means of allocating spectrum based on users and available frequencies in surrounding geographic regions. Presently, spectral masks are applied to radar transmission based on specifications from governmental regulatory agencies. This paper describes a concept for dynamic spectral mask determination based on the location and acceptable interference power levels at frequencies used by nearby communication receivers. This concept will be applied going forward to allow information from wireless networks about surrounding users to be applied in dynamically constraining radar transmitter spectra. C1 [Latham, Casey; Baylis, Charles; Marks, Robert J., II] Baylor Univ, Wireless & Microwave Circuits & Syst Program, Waco, TX 76798 USA. [Cohen, Lawrence] Naval Res Lab, Radar Div, Washington, DC 20375 USA. RP Latham, C (reprint author), Baylor Univ, Wireless & Microwave Circuits & Syst Program, Waco, TX 76798 USA. FU National Science Foundation [ECCS-1343316] FX This work has been funded by the National Science Foundation (Grant No. ECCS-1343316). 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 BN 978-1-5090-2755-2 PY 2016 PG 5 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG8EP UT WOS:000392264500008 ER PT S AU Aram, S Lee, YT Shan, H AF Aram, Shawn Lee, Yu-Tai Shan, Hua GP ASME TI NUMERICAL ANALYSIS OF SDBD-PLASMA BASED SEPARATION CONTROL ON THE BLADES OF A ROTATING IMPELLER SO PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2016, VOL 1A SE ASME Fluids Engineering Division Summer Meeting LA English DT Proceedings Paper CT ASME Fluids Engineering Division Summer Meeting CY JUL 10-14, 2016 CL Washington, DC SP ASME, Fluids Engn Div ID INDUCED FLUID-DYNAMICS; AXIAL COMPRESSOR; PERFORMANCE; CASCADE AB A numerical study is conducted to explore the performance and efficiency of Single Dielectric Barrier Discharge (SDBD) plasma actuators for controlling the turbulent boundary layer separation that occurs on the blades of a centrifugal fan. The numerical approach is based on the computational method developed previously to couple a DBD Electro Hydro-Dynamic (EHD) body force model with a RANS/LES flow model. The EHD body force model is based on solving the electrostatic equations for the electric potential due to applied voltage and the net charge density due to ionized air. The efficiency of the actuator at four different alternative current (AC) waveforms including sine, pulse, square, and pulse-amplitude-modulated sine is investigated in this study. The effect of applied voltage on the performance of the plasma actuator is also examined for all waveforms. C1 [Aram, Shawn; Lee, Yu-Tai; Shan, Hua] Naval Surface Warfare Center, Carderock Div, West Bethesda, MD 20817 USA. RP Aram, S (reprint author), Naval Surface Warfare Center, Carderock Div, West Bethesda, MD 20817 USA. FU Discovery and Invention Program of the Office of Naval Research FX The work is sponsored by the Discovery and Invention Program of the Office of Naval Research administered at the Naval Surface Warfare Center, Carderock Division under an In-house Laboratory Independent Research (ILIR) Program. NR 49 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 SN 1093-4928 BN 978-0-7918-5028-2 J9 ASME FLUID ENG DIV PY 2016 AR V01AT02A002 PG 11 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA BG8JS UT WOS:000392354900002 ER PT S AU Bandyopadhyay, PR AF Bandyopadhyay, Promode R. GP ASME TI FLYING FISH SCULLS TO TAXI AND PERTURBS WING LIFT WITH TRAVELLING WAVES TO LAND SO PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2016, VOL 1A SE ASME Fluids Engineering Division Summer Meeting LA English DT Proceedings Paper CT ASME Fluids Engineering Division Summer Meeting CY JUL 10-14, 2016 CL Washington, DC SP ASME, Fluids Engn Div ID GLIDING FLIGHT; ANIMALS AB The top 200 meters of oceans abound in life forms since photosynthesis is possible in that layer. Competition and predator-prey (swordfish-flying fish, 10(2)-10(4) to 1 mass ratio) interactions are intense here. Chased by predators, a flying fish (FF) a pleuston frantically escapes from the water and becomes airborne. Here we report the visual observations of oceanic surface and body distortions of FF to surmise the mechanisms of propulsion during taxiing and landing. FF leaps, not when it is chased, but when the additional energy required for further increase in speed underwater exceeds that required to leap.(1) The higher metabolic cost of transport of regular flapping flight in air than in water is circumvented by gliding. We examine the BBCTV video(2) by Richard Attenborough, the noted naturalist. An FF may camber its wings like parafoils and may also twist the outer half of the wings during taxiing and climbing. To produce thrust during taxiing, the FF sculls with the lower lobe of the tail fin to produce a reverse Karman vortex jet; there is rapid flicking of the lower lobe of the tail fin tangentially over the surface. The body acts as a chaotic damped and driven pendulum to produce the high-velocity wide flick. To damp after takeoff, it becomes a single asymmetric pendulum. Unpowered (foil) gliding follows. For descent, the wings are shaped, untwisted parafoils and, just prior to touchdown, travelling waves are superimposed, producing, in contrast to taxiing, an impressively smooth small angle-of-attack tail touchdown on water without any nose down. The spiked crowns of Richtmyer-Meshkov interface instability are visible on the ocean surface during leaping but not during landing. Trailing hydraulic jumps are observable during landing but not during leaping. The leap is a high acceleration and Weber number dominated (inertia/capillary forces) phenomenon, but the landing involves little impact force and is dominated by Froude number forces (inertia/gravity forces). The evidence suggests that, prior to leaping and while still underwater, the FF reads the surface wind direction to align the flight path. C1 [Bandyopadhyay, Promode R.] Naval Undersea Warfare Ctr, Newport, RI 02841 USA. RP Bandyopadhyay, PR (reprint author), Naval Undersea Warfare Ctr, Newport, RI 02841 USA. FU ONR341 Autonomous Systems Program; ASME FED FX This work is sponsored by ONR341 Autonomous Systems Program. The 90th anniversary of ASME FED will be celebrated during the 2016 Summer Meeting, and the author is grateful to ASME FED for the award of the 90th Anniversary Commemorative Special Medal. He is also grateful for the 2015 ASME Fluids Engineering Award and the 2006 ASME Freeman Scholar Award. NR 17 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 SN 1093-4928 BN 978-0-7918-5028-2 J9 ASME FLUID ENG DIV PY 2016 AR V01AT04A001 PG 12 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA BG8JS UT WOS:000392354900031 ER PT S AU Shan, H Aram, S Lee, YT AF Shan, Hua Aram, Shawn Lee, Yu-Tai GP ASME TI NUMERICAL SIMULATION OF FLOW INDUCED BY MULTIPLE DBD PLASMA ACTUATORS SO PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2016, VOL 1A SE ASME Fluids Engineering Division Summer Meeting LA English DT Proceedings Paper CT ASME Fluids Engineering Division Summer Meeting CY JUL 10-14, 2016 CL Washington, DC SP ASME, Fluids Engn Div ID VORTEX; OPTIMIZATION AB Active flow separation control using dielectric barrier discharge (DBD) plasma actuators oriented in the spanwise direction has been successfully investigated by the authors using an integrated numerical simulation tool that couples the unsteady Reynolds averaged Navier-Stokes (URANS) or large eddy simulation (LES) solver for incompressible flows with the DBD electro-hydrodynamic (EHD) body force model. Although many experimental and numerical investigations have indicated that the spanwise-oriented DBD plasma actuator is an effective flow control method, the application is difficult to extend from model-scale to full-scale problems, partly due to the required high amplitude and high bandwidth excitation. Also, the flow control mechanism associated with a spanwise-oriented DBD actuator is mainly direct momentum injection, therefore, the effectiveness of actuation is sensitive to the location of the DBD actuator relative to the location of flow separation. On the other hand, a few experimental studies have shown promising results using the DBD Vortex Generator (DBD-VG) consisting of multiple plasma DBD actuators oriented in the streamwise direction. By generating streamwise vortices extending a long distance downstream, the DBD-VGs enhance the mixing of the inner and outer layers of turbulent boundary layer flows. As a result, the boundary layer can better withstand an adverse pressure gradient. When applied to flow separation control, the effectiveness of the DBD-VGs should be less sensitive to location of flow separation. The present work extends the capability of the integrated numerical simulation tool from a single spanwise-oriented DBD plasma actuator to multiple DBD plasma actuators oriented in any direction, including the streamwise direction. As a demonstration of the new capability in the DBD-URANS coupled solver, numerical simulations of flow induced by a DBD-VG actuator with an array of exposed electrodes in a quiescent environment, as well as in a turbulent boundary layer over a flat plate, are carried out. The numerical simulation successfully reproduced the longitudinal vortices embedded in the boundary layer. C1 [Shan, Hua; Aram, Shawn; Lee, Yu-Tai] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA. RP Shan, H (reprint author), Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA. FU Discovery and Invention Program of the Office of Naval Research FX The work reported in this paper was sponsored by the Discovery and Invention Program of the Office of Naval Research administered at the Naval Surface Warfare Center, Carderock Division under an In-house Laboratory Independent Research (ILIR) Program. This work used the Kilrain system at Navy DoD Supercomputing Resource Center. NR 17 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 SN 1093-4928 BN 978-0-7918-5028-2 J9 ASME FLUID ENG DIV PY 2016 AR V01AT13A005 PG 10 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA BG8JS UT WOS:000392354900083 ER PT S AU Vargas, A Shan, H AF Vargas, Abel Shan, Hua GP ASME TI A NUMERICAL APPROACH FOR MODELING ROUGHNESS FOR MARINE APPLICATIONS SO PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2016, VOL 1B SE ASME Fluids Engineering Division Summer Meeting LA English DT Proceedings Paper CT ASME Fluids Engineering Division Summer Meeting CY JUL 10-14, 2016 CL Washington, DC SP ASME, Fluids Engn Div ID FRICTIONAL RESISTANCE; TURBULENCE MODEL; WALL ROUGHNESS; ACCOUNT AB A roughness wall model based on the equivalent sandgrain roughness approach that accounts for the log-law solution for turbulent boundary layer over fully rough surfaces is implemented into a viscous flow solver called NavyFOAM. The rough wall model is implemented as a wall function and is used in conjunction with the k-omega turbulence model. The roughness model is validated against experiments conducted on rough plates in a water tunnel and towed in a channel. Two sets of simulations, single-phase Reynolds-Averaged Navier-Stokes (RANS) and two-phase unsteady RANS were conducted to validate the current roughness model. Current results show good agreement with the roughness functions (Delta U+) and is within 1.5% of the experimental results. The overall frictional resistance predicted for the rough plates towed in a water channel is within 2% of the experimentally obtained results. With these promising results, the aim is to develop a computational capability for predicting added hull resistance due to biofouling. C1 [Vargas, Abel; Shan, Hua] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA. RP Vargas, A (reprint author), Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA. FU Naval Surface Warfare Center Carderock Division LDRD program under the direction of Dr. J. Price FX This research was funded by the Naval Surface Warfare Center Carderock Division LDRD program under the direction of Dr. J. Price. Many thanks to Dr. Eric Holm, Dr. Peter Chang, Dr. Joseph Gorski, and Dr. Shawn Aram for providing useful insight and technical support. Prof. Michael Schultz from the U.S. Naval Academy for providing the experimental data is also thanked. The rest of the Hydrodynamic Modeling of Biofouling-associated Roughness and Drag team members are also acknowledged. NR 32 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 SN 1093-4928 BN 978-0-7918-5029-9 J9 ASME FLUID ENG DIV PY 2016 AR V01BT30A005 PG 11 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA BG8JT UT WOS:000392355300072 ER PT S AU Vorwald, J Schwartz, A Kent, C AF Vorwald, John Schwartz, Alan Kent, Christopher GP ASME TI NEAR TERM SHIP MOTION FORECASTING FROM PRIOR MOTION SO PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2016, VOL 1B SE ASME Fluids Engineering Division Summer Meeting LA English DT Proceedings Paper CT ASME Fluids Engineering Division Summer Meeting CY JUL 10-14, 2016 CL Washington, DC SP ASME, Fluids Engn Div ID IDENTIFICATION; MODEL AB Ship-motion forecasting can be useful for naval operations such as aircraft landing, cargo transfer, off-loading of small boats, and ship "mating" between a large transport ship and smaller ships. The forecasted ship motion is particularly useful in sea states above SS3 when unanticipated large motions can suddenly occur. A 5- to 10-second forecast of future ship motion provides the operator time to compensate for the motion to avoid serious collisions. Ship motion forecasting can enable autonomous landing during higher sea states and can also provide an alternative ship location estimate during emergency procedures such as loss of communication link. This paper summarizes the evaluation of four categories of forecasting methodologies: subspace algorithms, autoregressive algorithms, nonlinear autoregressive using a wavelet network, and perturbation error methods. Simulated Model 5415 ship motion was evaluated in 24 conditions including sea states 4-6, ship speeds of 5, 10, 20, and 30 kts, and wave headings 150 and 180 deg (bow and head seas). For each condition, the simulation motion data was divided into twenty 7.5-minute segments consisting of 0.5 to 5 minutes of training data and 2.5 minutes of testing data. Two types of forecasting accuracy metrics were developed. One metric was based on forecasting simulated ship motion and the other metric involved forecasting periods when the motion exceeds threshold limits within a 4-second window, representing a quiescent period. The results indicate that for simulation forecast accuracy, the correlation coefficient between forecasted and actual motion was greater than 80% for 5-sec forecast horizons, and greater than 60% for 10-sec forecast horizons. For motion threshold forecasting, the forecasting accuracy was greater than 90% for 5-sec horizons and greater than 60% for 10-sec horizons. A qualitative assessment of both simulation and threshold metrics indicated that 80% accuracy produces a good forecast and 60% accuracy produces an acceptable forecast. Threshold forecasting can forecast the presence and duration of near-future quiescent periods, enabling safer, more efficient operations and reduced cost of ship-based aviation operations such as launch, recovery, and movement of aircraft. C1 [Vorwald, John; Schwartz, Alan; Kent, Christopher] Naval Surface Warfare Ctr, Carderock Div, Bethesda, MD 20817 USA. RP Vorwald, J (reprint author), Naval Surface Warfare Ctr, Carderock Div, Bethesda, MD 20817 USA. NR 15 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA SN 1093-4928 BN 978-0-7918-5029-9 J9 ASME FLUID ENG DIV PY 2016 AR V01BT30A004 PG 8 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA BG8JT UT WOS:000392355300071 ER PT B AU Jankowski, NR Smith, AN Hanrahan, BM AF Jankowski, Nicholas R. Smith, Andrew N. Hanrahan, Brendan M. GP ASME TI THERMAL MODEL OF A THIN FILM PULSED PYROELECTRIC GENERATOR SO PROCEEDINGS OF THE ASME SUMMER HEAT TRANSFER CONFERENCE, 2016, VOL 1 LA English DT Proceedings Paper CT ASME Summer Heat Transfer Conference CY JUL 10-14, 2016 CL Washington, DC SP ASME, Heat Transfer Div ID ENERGY CONVERTER; CONVERSION; HEAT AB Recent high energy density thin film material development has led to an increased interest in pyroelectric energy conversion. Using state-of-the-art lead-zirconate-titanate piezoelectric films capable of withstanding high electric fields we previously demonstrated single cycle energy conversion densities of 4.28 J/cm(3). While material improvement is ongoing, an equally challenging task involves developing the thermal and thermodynamic process though which we can harness this thermalptopelectric energy conversion capability. By coupling high speed thermal transients from pulsed heating with rapid charge and discharge cycles, there is potential for achieving high energy conversion efficiency. We briefly present thermodynamic equivalent models for pyroelectric power generation based on the traditional Brayton and Ericsson cycles, where temperature pressure states in a working fluid are replaced by temperature field states in a solid pyroelectric material. Net electrical work is then determined by integrating the path taken along the temperature dependent polarization curves for the material. From the thermodynamic cycles we identify the necessary cyclical thermal conditions to realize net power generation, including a figure of merit, r(EC), or the electrocaloric ratio, to aid in guiding generator design. Additionally, lumped transient analytical heat transfer models of the pyroelectric system with pulsed thermal input have been developed to evaluate the impact of reservoir temperatures, cycle frequency, and heating power on cycle output. These models are used to compare the two thermodynamic cycles. This comparison shows that as with traditional thermal cycles the Ericsson cycle provides the potential for higher cycle work while the Brayton cycle can produce a higher output power at higher thermal efficiency. Additionally, limitations to implementation of a high-speed Ericsson cycle were identified, primarily tied to conflicts between the available temperature margin and the requirement for isothermal electrical charging and discharging. C1 [Jankowski, Nicholas R.; Hanrahan, Brendan M.] US Army Res Lab, Adelphi, MD 20783 USA. [Smith, Andrew N.] US Naval Acad, Annapolis, MD 21402 USA. RP Jankowski, NR (reprint author), US Army Res Lab, Adelphi, MD 20783 USA. NR 9 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 978-0-7918-5032-9 PY 2016 AR V001T01A010 PG 9 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA BG8JX UT WOS:000392359100010 ER PT B AU Warzoha, RJ Smith, AN Harris, M AF Warzoha, Ronald J. Smith, Andrew N. Harris, Maurice GP ASME TI IMPROVING THE RESOLUTION OF STEADY-STATE, INFRARED-BASED THERMAL INTERFACE RESISTANCE MEASUREMENTS USING HIGH-PRECISION METROLOGY TO DETERMINE IN-SITU TIM THICKNESS SO PROCEEDINGS OF THE ASME SUMMER HEAT TRANSFER CONFERENCE, 2016, VOL 1 LA English DT Proceedings Paper CT ASME Summer Heat Transfer Conference CY JUL 10-14, 2016 CL Washington, DC SP ASME, Heat Transfer Div ID PERFORMANCE AB The performance characteristics of thermal interface materials (TIMs) are quickly outpacing our ability to measure them using steady-state techniques. In fact, scientists have turned to photothermal techniques like Time-domain Thermoreflectance (TDTR) to measure the impedance to heat flow across TIMs, namely due to their relatively low measurement uncertainties. However, such techniques are costly, require significant sample preparation, only measure local thermal impedances and are not yet equipped to measure thermal resistance as a function of pressure. Instead, it is desirable to maximize the resolution of traditional steady-state equipment for these types of measurements. In this work, we develop a more robust and accurate methodology to determine the temperature difference across the junction of a traditional steady-state apparatus using high accuracy measurements of in-situ TIM thickness in tandem with infrared thermography. This methodology eliminates a significant fraction of the uncertainty associated with the measurement of thermal interface resistance. Importantly, the use of this method improves the accuracy of the measurement device by an order of magnitude at interfacial thermal resistance values on the order of 1.10(-6) m(2). K/W when compared to state-of-the-art, thermal probe-based measurement systems. C1 [Warzoha, Ronald J.; Smith, Andrew N.] US Naval Acad, Heat & Mass Transfer Lab, Dept Mech Engn, Annapolis, MD 21146 USA. [Harris, Maurice] US Naval Acad, Dept Mech Engn, Annapolis, MD 21146 USA. RP Warzoha, RJ (reprint author), US Naval Acad, Heat & Mass Transfer Lab, Dept Mech Engn, Annapolis, MD 21146 USA. EM warzoha@usna.edu; ansmith@usna.edu FU Office of Naval Research FX The work of the machine shop at the United States Naval Academy is greatly appreciated. This work was funded in part by the Office of Naval Research. NR 15 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5032-9 PY 2016 AR V001T02A001 PG 8 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA BG8JX UT WOS:000392359100015 ER PT S AU Rodriguez-Seda, EJ AF Rodriguez-Seda, Erick J. BE Petre, E Brezovan, M TI Reduced-Attention Output Feedback Control of Linear Systems with Bounded Disturbances SO 2016 20TH INTERNATIONAL CONFERENCE ON SYSTEM THEORY, CONTROL AND COMPUTING (ICSTCC) SE International Conference on System Theory Control and Computing LA English DT Proceedings Paper CT 20th International Conference on System Theory, Control and Computing (ICSTCC) CY OCT 13-15, 2016 CL Sinaia, ROMANIA SP Inst Elect & Elect Engineers, Control Syst Soc, Univ Craiova, Fac Automat Comp Elect, Automat Control Res Ctr, Gheorghe Asachi Tech Univ Iasi, Fac Automat Control & Comp Engn, Dunarea Jos Univ Galati, Fac Control Syst Comp Elect & Elect Engn, Minist Educ & Res Romania, Natl Authority Sci Res & Innovat, IEEE Romanian Sect, Romanian Acad Tech Sci, Romanian Soc Automat & Tech Informat DE Sampled-data systems; Networked control; Self-triggered control; observability; reconstructability AB One of the main challenges in Networked Control Systems is to make better use of shared communication and computing resources while preserving closed-loop stability and good performance of the controlled process. Herein, we present an output feedback control strategy that reduces the communication overhead of the networked control system by increasing the time between control and measurement samples. The control design is based on self-triggered control and ensures closed-loop stability and ultimate boundedness of the state vector despite the presence of bounded input and output disturbances. The current work assumes that not all state variables are available for measurement and employs a reconstruction technique to estimate the state vector. Since the sampling is time-varying, this paper also presents results on the preservation of reconstructability and observability of linear systems under aperiodic sampling. Two numerical examples are presented to illustrate the performance of the state estimation and reduced-attention control strategy. C1 [Rodriguez-Seda, Erick J.] US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA. RP Rodriguez-Seda, EJ (reprint author), US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA. EM rodrigue@usna.edu 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 SN 2372-1618 BN 978-1-5090-2720-0 J9 INT CONF SYST THEO PY 2016 BP 269 EP 276 PG 8 WC Automation & Control Systems; Computer Science, Hardware & Architecture; Computer Science, Information Systems SC Automation & Control Systems; Computer Science GA BG7QC UT WOS:000391609900047 ER PT S AU Banks, HB Valovcin, D Mack, S Gossard, AC Pfeiffer, L Sherwin, MS AF Banks, Hunter B. Valovcin, Darren Mack, Shawn Gossard, Art C. Pfeiffer, Loren Sherwin, Mark S. GP IEEE TI High-order Sideband Generation: Effect of Optical Polarization SO 2016 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 05-10, 2016 CL San Jose, CA ID HIGH-HARMONIC GENERATION AB Continuous optical excitation of excitons in quantum wells driven by intense, monochromatic terahertz fields leads to high-order sideband generation. With optical and terahertz fields perpendicular, sideband generation is enhanced, leading to 60th-order and higher processes. C1 [Banks, Hunter B.; Valovcin, Darren; Sherwin, Mark S.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Banks, Hunter B.; Valovcin, Darren; Sherwin, Mark S.] Univ Calif Santa Barbara, Inst Terahertz Sci & Technol, Santa Barbara, CA 93106 USA. [Mack, Shawn] Naval Res Lab, Washington, DC 20375 USA. [Gossard, Art C.] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA. [Pfeiffer, Loren] Dept Elect Engn, Princeton, NJ USA. RP Banks, HB (reprint author), Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.; Banks, HB (reprint author), Univ Calif Santa Barbara, Inst Terahertz Sci & Technol, Santa Barbara, CA 93106 USA. EM hbanks@physics.ucsb.edu 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 2160-9020 BN 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286400260 ER PT S AU Busse, LE Frantz, JA Shaw, LB Poutous, MK Aggarwal, ID Sanghera, JS AF Busse, Lynda E. Frantz, Jesse A. Shaw, L. Brandon Poutous, Menelaos K. Aggarwal, Ishwar D. Sanghera, Jasbinder S. GP IEEE TI Antireflective Surface Microstructures on Optics for Laser Applications SO 2016 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 05-10, 2016 CL San Jose, CA ID WINDOWS; LOSSES; FIBERS AB The optical performance of AR surface microstructures on optics for laser systems is presented, as applied to large windows, laser crystals, lenses and optical fibers. Ultralow reflectance and very high laser induced damage thresholds have been demonstrated. C1 [Busse, Lynda E.; Frantz, Jesse A.; Shaw, L. Brandon; Sanghera, Jasbinder S.] US Navy, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Poutous, Menelaos K.; Aggarwal, Ishwar D.] Univ N Carolina, Dept Phys & Opt Sci, Charlotte, NC 28223 USA. RP Busse, LE (reprint author), US Navy, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM lynda.busse@nrl.navy.mil 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 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286402366 ER PT S AU Cranch, G Johnson, L Heerschap, S Seaver, M Miller, G AF Cranch, Geoffrey Johnson, Lee Heerschap, Seth Seaver, Mark Miller, Gary GP IEEE TI Towards Attometer/Hz(1/2) Displacement Resolution in DFB Fiber Laser Acoustic Emission Sensors SO 2016 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 05-10, 2016 CL San Jose, CA ID NOISE AB A distributed feedback fiber laser is shown to achieve a displacement resolution approaching 3x10(-17) m/Hz(1/2) up to 10 MHz (similar to 10(3) more sensitive than the current state-of-the-art). Detection of acoustic emission events from cracks induced in fatigued lap joints is demonstrated. C1 [Cranch, Geoffrey; Johnson, Lee; Heerschap, Seth; Miller, Gary] US Navy, Res Lab, Washington, DC 20375 USA. [Seaver, Mark] Sotera Def Solut Inc, C4ISR Div, Columbia, MD USA. RP Cranch, G (reprint author), US Navy, Res Lab, Washington, DC 20375 USA. EM geoff_cranch@yahoo.com 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 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286400149 ER PT S AU Doster, T Watnik, AT AF Doster, Timothy Watnik, Abbie T. GP IEEE TI OAM Channel Efficiency in the Presence of Turbulence for Laguerre-and Bessel-Gauss Beams SO 2016 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 05-10, 2016 CL San Jose, CA AB Bessel-Gauss beams, a type of pseudo non-diffracting beam, are examined for their robustness for propagation through turbulent free space and compared to Laguerre-Gauss beams of various orders using an optical transformation sorting methods. C1 [Doster, Timothy; Watnik, Abbie T.] US Navy, Res Lab, Washington, DC 20003 USA. RP Doster, T (reprint author), US Navy, Res Lab, Washington, DC 20003 USA. EM timothy.doster@nrl.navy.mil; abbie.watnik@nrl.navy.mil 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 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286403419 ER PT S AU Hu, J Menyuk, CR Wei, CL Shaw, LB Sanghera, JS Aggarwal, ID AF Hu, Jonathan Menyuk, Curtis R. Wei, Chengli Shaw, L. Brandon Sanghera, Jasbinder S. Aggarwal, Ishwar D. GP IEEE TI Pr3+-doped Mid-infrared Chalcogenide Fiber Amplifiers using Cascaded Amplification SO 2016 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 05-10, 2016 CL San Jose, CA ID GLASS-FIBER; MU-M; LASER; IR AB We computationally investigate cascaded amplification in a three-level mid-infrared Pr3+-doped chalcogenide fiber amplifier. We show that 45% of the pump power that is injected at 2 mu m can be shifted to 4.5 mu m. C1 [Hu, Jonathan; Wei, Chengli] Baylor Univ, Dept Elect & Comp Engn, Waco, TX 76798 USA. [Menyuk, Curtis R.] Univ Maryland Baltimore Cty, Dept Comp Sci & Elect Engn, Baltimore, MD 21250 USA. [Shaw, L. Brandon; Sanghera, Jasbinder S.] Naval Res Lab, Code 5620, Washington, DC 20375 USA. [Aggarwal, Ishwar D.] Sotera Def Solut, 2200 Def Highway, Crofton, MD 21114 USA. RP Hu, J (reprint author), Baylor Univ, Dept Elect & Comp Engn, Waco, TX 76798 USA. EM jonathan_hu@baylor.edu NR 9 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-9020 BN 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286403081 ER PT S AU Hu, Y Menyuk, CR Xie, XJ Hutchinson, M Urick, VJ Campbell, J Williams, KJ AF Hu, Yue Menyuk, Curtis R. Xie, Xiaojun Hutchinson, Meredith Urick, Vincent J. Campbell, Joe Williams, Keith J. GP IEEE TI Numerical Modeling of Amplitude-to-Phase Conversion in Modified Uni-Traveling Carrier (MUTC) Photodetector SO 2016 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 05-10, 2016 CL San Jose, CA ID GENERATION AB We calculate the amplitude-to-phase noise conversion in a MUTC photodetector. We obtained two nulls as measured in the experiments, and we explain their origin. C1 [Hu, Yue; Menyuk, Curtis R.] Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA. [Hutchinson, Meredith; Urick, Vincent J.; Williams, Keith J.] Naval Res Lab, Photon Technol Branch, Washington, DC 20375 USA. [Xie, Xiaojun; Campbell, Joe] Univ Virginia, Charlottesville, VA 22904 USA. RP Hu, Y (reprint author), Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA. EM yuehu1@umbc.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 2160-9020 BN 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286402021 ER PT S AU Hutchinson, MN Frigo, NJ Peasant, JR AF Hutchinson, M. N. Frigo, N. J. Peasant, J. R. GP IEEE TI Novel Characterization of Photodiode Intermodulation Distortion SO 2016 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 05-10, 2016 CL San Jose, CA AB A novel method is presented to characterize photodiode intermodulation distortion (IMD) as a function of output frequency. We find that for a given bias voltage and photocurrent, the IMDs can fall along a single curve. C1 [Hutchinson, M. N.] US Naval Res Lab, Washington, DC 20375 USA. [Frigo, N. J.] US Naval Acad, Annapolis, MD 21402 USA. [Peasant, J. R.] Duke Univ, Durham, NC 27708 USA. RP Hutchinson, MN (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM meredith.hutchinson@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 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286402468 ER PT S AU Jadidi, MM Sushkov, AB Myers-Ward, RL Boyd, AK Daniels, KM Gaskill, DK Fuhrer, MS Drew, HD Murphy, TE AF Jadidi, Mohammad M. Sushkov, Andrei B. Myers-Ward, Rachel L. Boyd, Anthony K. Daniels, Kevin M. Gaskill, D. Kurt Fuhrer, Michael S. Drew, H. Dennis Murphy, Thomas E. GP IEEE TI Terahertz Plasmon Resonances in Graphene-Filled Subwavelength Metallic Apertures SO 2016 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 05-10, 2016 CL San Jose, CA AB We observe and theoretically study new plasmon resonances in hybrid metal-graphene structures. We demonstrate anomalously high resonant terahertz absorption and transmission in graphene-filled metallic apertures. These tunable plasmon resonances can find applications in terahertz optoelectronics. (C) 2016 Optical Society of America C1 [Jadidi, Mohammad M.; Murphy, Thomas E.] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA. [Sushkov, Andrei B.; Fuhrer, Michael S.; Drew, H. Dennis] Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USA. [Myers-Ward, Rachel L.; Boyd, Anthony K.; Daniels, Kevin M.; Gaskill, D. Kurt] US Naval Res Lab, Washington, DC 20375 USA. [Fuhrer, Michael S.] Monash Univ, Sch Phys, Clayton, Vic 3800, Australia. RP Jadidi, MM (reprint author), Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA. EM mmjadidi@umd.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 2160-9020 BN 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286401006 ER PT S AU O'Hagan, S Northern, JH Gras, B Ewart, P Kim, CS Kim, M Merritt, CD Bewley, WW Canedy, CL Abell, J Vurgaftman, I Meyer, JR AF O'Hagan, S. Northern, J. H. Gras, B. Ewart, P. Kim, C. S. Kim, M. Merritt, C. D. Bewley, W. W. Canedy, C. L. Abell, J. Vurgaftman, I. Meyer, J. R. GP IEEE TI Multi-species sensing using multi-mode absorption spectroscopy with mid-infrared interband cascade lasers SO 2016 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 05-10, 2016 CL San Jose, CA C1 [O'Hagan, S.; Northern, J. H.; Ewart, P.] Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England. [Gras, B.] Ecole Natl Super Ingenieurs CAEN, 6 Bd Marechal Juin, F-14050 Caen, France. [Kim, C. S.; Merritt, C. D.; Bewley, W. W.; Canedy, C. L.; Abell, J.; Vurgaftman, I.; Meyer, J. R.] Naval Res Lab, Code 5604, Washington, DC 20375 USA. [Kim, M.] Sotera Def Solut Inc, Columbia, MD 21046 USA. RP O'Hagan, S (reprint author), Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England. 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 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286401195 ER PT S AU Paarmann, A Razdolski, I Caldwell, JD Giles, A Giannini, V Gewinner, S Schollkopf, W Maier, SA Wolf, M AF Paarmann, A. Razdolski, I. Caldwell, J. D. Giles, A. Giannini, V. Gewinner, S. Schoellkopf, W. Maier, S. A. Wolf, M. GP IEEE TI Mid-Infrared Second Harmonic Spectroscopy Probing Surface Phonon Polariton Localization in SiC Nanopillars SO 2016 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 05-10, 2016 CL San Jose, CA AB We experimentally demonstrate mid-infrared second harmonic generation frequency-domain spectroscopy as a novel, highly sensitive approach to investigate the degree of sub-wavelength localization of surface phonon polaritons in SiC nanopillars. C1 [Paarmann, A.; Razdolski, I.; Gewinner, S.; Schoellkopf, W.; Wolf, M.] Max Planck Gesell, Fritz Haber Inst, Berlin, Germany. [Caldwell, J. D.; Giles, A.] US Naval Res Lab, Washington, DC USA. [Giannini, V.; Maier, S. A.] Imperial Coll London, London, England. RP Paarmann, A (reprint author), Max Planck Gesell, Fritz Haber Inst, Berlin, Germany. EM alexander.paarmann@fhi-berlin.mpg.de RI Paarmann, Alex/G-4490-2012 OI Paarmann, Alex/0000-0002-8271-2284 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 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286401128 ER PT S AU Schermer, RT Urick, VJ McKinney, JD AF Schermer, Ross T. Urick, V. J. McKinney, Jason D. GP IEEE TI Acousto-Optic Delay Modulation of a Photonic Signal SO 2016 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 05-10, 2016 CL San Jose, CA AB This paper demonstrates an acousto-optic technique for delay modulation of wide bandwidth RF photonic signals. By modulating RF delay, sideband power is varied 20 dB/frequency decade over the 0.1-10 GHz range, potentially enabling for applications such as instantaneous frequency measurement. C1 [Schermer, Ross T.; Urick, V. J.; McKinney, Jason D.] US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Schermer, RT (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. 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 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286402034 ER PT S AU Spott, A Peters, J Davenport, ML Stanton, EJ Merritt, CD Bewley, WW Vurgaftman, I Meyer, JR Kirch, J Mawst, LJ Botez, D Bowers, JE AF Spott, Alexander Peters, Jon Davenport, Michael L. Stanton, Eric J. Merritt, Charles D. Bewley, William W. Vurgaftman, Igor Meyer, Jerry R. Kirch, Jeremy Mawst, Luke J. Botez, Dan Bowers, John E. GP IEEE TI Quantum Cascade Laser on Silicon at 4.8 mu m SO 2016 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 05-10, 2016 CL San Jose, CA AB Here we demonstrate a room-temperature, 4.8 mu m quantum cascade laser (QCL) heterogeneously integrated with silicon-on-nitride-on-insulator waveguides. QCL mesas are defined above silicon waveguides to form lasers. C1 [Spott, Alexander; Peters, Jon; Davenport, Michael L.; Stanton, Eric J.; Bowers, John E.] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA. [Merritt, Charles D.; Vurgaftman, Igor; Meyer, Jerry R.] US Navy, Res Lab, Code 5613, Washington, DC 20735 USA. [Kirch, Jeremy; Mawst, Luke J.; Botez, Dan] Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA. RP Spott, A (reprint author), Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA. EM spott@ece.ucsb.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 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286403132 ER PT S AU Stievater, TH Holmstrom, SA Kozak, DA McGill, RA Pruessner, MW Tyndall, N Rabinovich, WS Khurgin, JB AF Stievater, T. H. Holmstrom, S. A. Kozak, D. A. McGill, R. A. Pruessner, M. W. Tyndall, N. Rabinovich, W. S. Khurgin, J. B. GP IEEE TI Trace-Gas Raman Spectroscopy Using Functionalized Waveguides SO 2016 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 05-10, 2016 CL San Jose, CA ID FIBER AB The vapor-phase Raman spectra of trace concentrations of chemicals are measured using highly evanescent silicon nitride rib waveguides functionalized with a top cladding that is designed to strongly sorb organophosphonates and other toxic species. C1 [Stievater, T. H.; Kozak, D. A.; McGill, R. A.; Pruessner, M. W.; Tyndall, N.; Rabinovich, W. S.] 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 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 2160-9020 BN 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286402212 ER PT S AU Valovcin, D Banks, HB Mack, S Gossard, AC Pfeiffer, L Sherwin, MS AF Valovcin, Darren Banks, Hunter B. Mack, Shawn Gossard, Art C. Pfeiffer, Loren Sherwin, Mark S. GP IEEE TI High-Order Sideband Generation in Semiconductors: Beyond the Three Step Model SO 2016 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 05-10, 2016 CL San Jose, CA AB Measurements of high-order sideband generation and absorption as a function of near-ir frequency in strong monochromatic sub-THz fields highlight opportunities to explore recollision physics in regimes that are difficult to access in atomic systems. C1 [Valovcin, Darren; Banks, Hunter B.; Sherwin, Mark S.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Valovcin, Darren; Banks, Hunter B.; Sherwin, Mark S.] Univ Calif Santa Barbara, Inst Terahertz Sci & Technol, Santa Barbara, CA 93106 USA. [Mack, Shawn] US Navy, Res Lab, Washington, DC USA. [Gossard, Art C.] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA. [Pfeiffer, Loren] Dept Elect Engn, Princeton, NJ USA. RP Valovcin, D (reprint author), Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.; Valovcin, D (reprint author), Univ Calif Santa Barbara, Inst Terahertz Sci & Technol, Santa Barbara, CA 93106 USA. EM valovcin@phyiscs.ucsb.edu 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 2160-9020 BN 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286402099 ER PT S AU Volet, N Spott, A Stanton, EJ Davenport, ML Peters, J Meyer, J Bowers, JE AF Volet, Nicolas Spott, Alexander Stanton, Eric J. Davenport, Michael L. Peters, Jon Meyer, Jerry Bowers, John E. GP IEEE TI Semiconductor optical amplifiers at 2.0-mu m wavelength heterogeneously integrated on silicon SO 2016 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 05-10, 2016 CL San Jose, CA ID LASER; SPEED; LIDAR AB We report the first semiconductor optical amplifiers at 2.0-mu m wavelength, heterogeneously integrated by bonding an InP-based active region to silicon. On-chip gain larger than 10 dB is observed at 20 degrees C over a 40-nm bandwidth. C1 [Volet, Nicolas; Spott, Alexander; Stanton, Eric J.; Davenport, Michael L.; Peters, Jon; Bowers, John E.] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA. [Meyer, Jerry] Naval Res Lab, Washington, DC 20735 USA. RP Volet, N (reprint author), Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA. EM volet@ece.ucsb.edu 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 SN 2160-9020 BN 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286402486 ER PT S AU Warren, MV Canedy, CL Kim, CS Kim, M Merritt, CD Bewley, WW Vurgaftman, I Meyer, JR AF Warren, M. V. Canedy, C. L. Kim, C. S. Kim, M. Merritt, C. D. Bewley, W. W. Vurgaftman, I. Meyer, J. R. GP IEEE TI Reduced Contact Duty Cycle to Reduce Loss in Distributed-Feedback Interband Cascade Lasers SO 2016 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 05-10, 2016 CL San Jose, CA AB Threshold current densities for single-mode cw operation at room temperature were lowest and slope efficiencies highest for DFB interband cascade lasers with top contacts covering only a fraction of the ridge surface. C1 [Warren, M. V.; Canedy, C. L.; Kim, C. S.; Merritt, C. D.; Bewley, W. W.; Vurgaftman, I.; Meyer, J. R.] Naval Res Lab, Code 5613, Washington, DC 20375 USA. [Kim, C. S.] Sotera Def Solut Inc, Crofton, MD 21114 USA. RP Warren, MV (reprint author), Naval Res Lab, Code 5613, Washington, DC 20375 USA. EM mwir_laser@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 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286403129 ER PT S AU Wu, YW Seaton, M Bracker, A Gammon, D AF Wu, Yanwen Seaton, Matt Bracker, Allan Gammon, Dan GP IEEE TI Localized Plasmonic-assisted Polarization Dependent State Switching in a Single Semiconductor Quantum Dot SO 2016 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 05-10, 2016 CL San Jose, CA AB We demonstrated polarization dependent switching between two different charged states in a single quantum dot. We note that this switching is a consequence of the modification of the local electromagnetic field by a plasmonic structure. C1 [Wu, Yanwen; Seaton, Matt] Univ South Carolina, Dept Phys & Astron, Smart State Ctr Expt Nanoscale Phys, Columbia, SC 29201 USA. [Bracker, Allan; Gammon, Dan] Naval Res Lab, Washington, DC 20375 USA. RP Wu, YW (reprint author), Univ South Carolina, Dept Phys & Astron, Smart State Ctr Expt Nanoscale Phys, Columbia, SC 29201 USA. EM wu223@mailbox.sc.edu; gammon@nrl.navy.mil NR 2 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-9020 BN 978-1-9435-8011-8 J9 CONF LASER ELECTR PY 2016 PG 2 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7HE UT WOS:000391286400270 ER PT J AU Koehler, AD Anderson, TJ Tadjer, MJ Feigelson, BN Hobart, KD Kub, FJ Nath, A Shahin, DI AF Koehler, Andrew D. Anderson, Travis J. Tadjer, Marko J. Feigelson, Boris N. Hobart, Karl D. Kub, Francis J. Nath, Anindya Shahin, David I. GP IEEE TI Vertical GaN Junction Barrier Schottky Diodes by Mg Implantation and Activation Annealing SO 2016 IEEE 4TH WORKSHOP ON WIDE BANDGAP POWER DEVICES AND APPLICATIONS (WIPDA) LA English DT Proceedings Paper CT 4th IEEE Workshop on Wide Bandgap Power Devices and Applications (WiPDA) CY NOV 07-09, 2016 CL Fayetteville, AR SP IEEE, IEEE Power Elect Soc, IEEE Electron Devices Soc, Power Sources Manufacturers Assoc, Univ Arkansas DE JBS diode; junction barrier Schottky diode; vertical GaN; GaN; power; GaN AB Vertical GaN Junction barrier Schottky (JBS) diodes are fabricated on hydride vapor phase epitaxy (HVPE) GaN substrates. The p-type JBS gridded regions were formed by selective area doping by Mg ion implantation followed by an activation anneal. Implantation was performed into a 10 mu m thick unintentionally doped GaN layer grown by metal organic chemical vapor deposition (MOCVD). Evaporating Pd/Au formed the anode contacts and the cathode was formed of Ti/Al/Ni/Au. Activation of the Mg-implanted GaN was achieved by implementing a three part process, which includes: 1) capping the GaN surface with sputtered AlN, 2) annealing in a 350 PSI nitrogen overpressure environment, and 3) performing a multi-cycle rapid thermal anneal (MRTA) with a peak temperature of 1350 degrees C. In addition to the JBS structures, Schottky barrier diodes (SBDs) and PiN diodes were also fabricated. C1 [Koehler, Andrew D.; Anderson, Travis J.; Tadjer, Marko J.; Feigelson, Boris N.; Hobart, Karl D.; Kub, Francis J.] US Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA. [Nath, Anindya] George Mason Univ, Dept Elect & Comp Engn, Fairfax, VA 22030 USA. [Shahin, David I.] Univ Maryland, Mat Sci & Engn, College Pk, MD 20742 USA. RP Koehler, AD (reprint author), US Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA. EM andrew.koehler@nrl.navy.mil NR 9 TC 0 Z9 0 U1 4 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-1576-4 PY 2016 BP 344 EP 346 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA BG7ZJ UT WOS:000392116100066 ER PT S AU Rohrer, JP Killeen, KM AF Rohrer, Justin P. Killeen, Kevin M. GP IEEE TI Geolocation Assisted Routing Protocols for Vehicular Networks SO 2016 INTERNATIONAL CONFERENCE ON CONNECTED VEHICLES AND EXPO (ICCVE) SE International Conference on Connected Vehicles and Expo LA English DT Proceedings Paper CT International Conference on Connected Vehicles and Expo (ICCVE) CY SEP 12-16, 2016 CL Seattle, WA SP IEEE ID AD HOC NETWORKS; CONNECTED MOBILE NETWORKS AB The class of flooding-based DTN routing protocols that leverage (transitive) encounter probabilities have been shown to perform well in selected simulations and scenarios, however they are especially sensitive to heterogeneous mobility models in which some nodes' mobility pattern is on a significantly different timescale than others. In particular, military and disaster response scenarios can exhibit abrupt topology changes. We analytically show that the worst-case inputs to these existing DTN routing algorithms can drastically reduce their performance. In light of such scenarios, we develop new protocols that inherit the benefits of existing schemes, while leveraging geographic assistance to enable faster recovery from abrupt topology changes. C1 [Rohrer, Justin P.; Killeen, Kevin M.] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Rohrer, JP (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA. EM jprohrer@nps.edu; kmkillee@nps.edu FU US Marine Corps; US Navy FX The authors would like to thank Geoff Xie and Rob Beverly for their helpful insights, advice, and critique of this work. This work was funded in part by the US Marine Corps and US Navy. Views and conclusions are those of the authors and should not be interpreted as representing the official policies or position of the U. S. government. NR 24 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2378-1289 BN 978-1-5090-4524-2 J9 INT CONF CONNECT VEH PY 2016 BP 1 EP 6 DI 10.1109/ICCVE.2016.1 PG 6 WC Engineering, Electrical & Electronic; Transportation Science & Technology SC Engineering; Transportation GA BG7ZX UT WOS:000392133800001 ER PT J AU Aliakbarpour, H Prasath, VBS Palaniappan, K Seetharaman, G Dias, J AF Aliakbarpour, Hadi Prasath, V. B. Surya Palaniappan, Kannappan Seetharaman, Guna Dias, Jorge TI Heterogeneous Multi-View Information Fusion: Review of 3-D Reconstruction Methods and a New Registration with Uncertainty Modeling SO IEEE ACCESS LA English DT Article DE Structure-from-motion; image registration; 3D reconstruction; heterogeneous information fusion; homography; coupled sensors; inertial measurement unit (IMU); sensor network; geometric uncertainty; virtual reality ID INERTIAL SENSORS; 3-DIMENSIONAL RECONSTRUCTION; REAL-TIME; 3D; CALIBRATION; CAMERA; IMAGES; VISION AB We consider a multisensor network fusion framework for 3-D data registration using inertial planes, the underlying geometric relations, and transformation model uncertainties. We present a comprehensive review of 3-D reconstruction methods and registration techniques in terms of the underlying geometric relations and associated uncertainties in the registered images. The 3-D data registration and the scene reconstruction task using a set of multiview images are an essential goal of structure-from motion algorithms that still remains challenging for many applications, such as surveillance, human motion and behavior modeling, virtual-reality, smart-rooms, health-care, teleconferencing, games, human robot interaction, medical imaging, and scene understanding. We propose a framework to incorporate measurement uncertainties in the registered imagery, which is a critical issue to ensure the robustness of these applications but is often not addressed. In our test bed environment, a network of sensors is used where each physical node consists of a coupled camera and associated inertial sensor (IS)/inertial measurement unit. Each camera-IS node can be considered as a hybrid sensor or fusion-based virtual camera. The 3-D scene information is registered onto a set of virtual planes defined by the IS. The virtual registrations are based on using the homography calculated from 3-D orientation data provided by the IS. The uncertainty associated with each 3-D point projected onto the virtual planes is modeled using statistical geometry methods. Experimental results demonstrate the feasibility and effectiveness of the proposed approach for multiview reconstruction with sensor fusion. C1 [Aliakbarpour, Hadi; Prasath, V. B. Surya; Palaniappan, Kannappan] Univ Missouri, Dept Comp Sci, Computat Imaging & VisAnal Lab, Columbia, MO 65211 USA. [Seetharaman, Guna] US Naval Res Lab, Adv Comp Concepts, Washington, DC 20375 USA. [Dias, Jorge] Univ Coimbra, Inst Syst & Robot, Fac Sci & Technol, P-3000315 Coimbra, Portugal. [Dias, Jorge] Khalifa Univ Sci Technol & Res, Inst Robot, Abu Dhabi 127788, U Arab Emirates. RP Prasath, VBS (reprint author), Univ Missouri, Dept Comp Sci, Computat Imaging & VisAnal Lab, Columbia, MO 65211 USA. EM prasaths@missouri.edu OI Prasath, Surya/0000-0001-7163-7453 FU U.S. Air Force Research Laboratory [AFRL FA8750-14-2-0072]; Portuguese Foundation for Science and Technology FX This work was supported in part by the U.S. Air Force Research Laboratory under Grant AFRL FA8750-14-2-0072 and in part by the Portuguese Foundation for Science and Technology. NR 92 TC 0 Z9 0 U1 3 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 2016 VL 4 BP 8264 EP 8285 DI 10.1109/ACCESS.2016.2629987 PG 22 WC Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA EH0XO UT WOS:000391487700010 ER PT S AU He, ZF Mao, SW Kompella, S Swami, A AF He, Zhifeng Mao, Shiwen Kompella, Sastry Swami, Ananthram GP IEEE TI Link Scheduling and Channel Assignment with a Graph Spectral Clustering Approach SO MILCOM 2016 - 2016 IEEE MILITARY COMMUNICATIONS CONFERENCE SE IEEE Military Communications Conference LA English DT Proceedings Paper CT 35th IEEE Military Communications Conference (MILCOM) CY NOV 01-03, 2016 CL Baltimore, MD SP IEEE, AFCEA, IEEE Commun Soc DE Link scheduling; channel assignment; spectral graph theory; clustering ID WIRELESS NETWORKS; CAPACITY AB We tackle the challenging problem of link scheduling and channel assignment in multi-channel, multi-hop wireless networks, aiming to achieve high network throughput. We adopt the signed graph spectral clustering algorithm to solve this problem heuristically, by jointly considering channel gain and mutual interference. The basic idea is to cluster links with smaller mutual interference and allocate channels with a higher gain. Simulation results demonstrate the advantages of our proposed algorithm over a benchmark scheme in terms of minimum link throughput and sum throughput. C1 [He, Zhifeng; Mao, Shiwen] Auburn Univ, Dept Elect & Comp Engn, Auburn, AL 36849 USA. [Kompella, Sastry] US Navy, Res Lab, Div Informat Technol, Washington, DC 20375 USA. [Swami, Ananthram] US Army, Res Lab, Adelphi, MD 20783 USA. RP He, ZF (reprint author), Auburn Univ, Dept Elect & Comp Engn, Auburn, AL 36849 USA. EM zzh0008@tigermail.auburn.edu; smao@ieee.org; sk@ieee.org; a.swami@ieee.org 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 2155-7578 BN 978-1-5090-3781-0 J9 IEEE MILIT COMMUN C PY 2016 BP 73 EP 78 PG 6 WC Telecommunications SC Telecommunications GA BG7LX UT WOS:000391433600013 ER PT S AU Kam, C Kompella, S Nguyen, GD Wieselthier, JE Ephremides, A AF Kam, Clement Kompella, Sastry Nguyen, Gam D. Wieselthier, Jeffrey E. Ephremides, Anthony GP IEEE TI Controlling the Age of Information: Buffer Size, Deadline, and Packet Replacement SO MILCOM 2016 - 2016 IEEE MILITARY COMMUNICATIONS CONFERENCE SE IEEE Military Communications Conference LA English DT Proceedings Paper CT 35th IEEE Military Communications Conference (MILCOM) CY NOV 01-03, 2016 CL Baltimore, MD SP IEEE, AFCEA, IEEE Commun Soc AB We study the age of information, which is a recently introduced metric for measuring the freshness of a continually updated piece of information as observed at a remote monitor. The age of information metric has been studied for a variety of different queuing systems, and in this work, we consider the impact of buffer sizes, packet deadlines, and packet replacement on the average age of information for queuing systems. We conduct a simulation-based study in which we modeled a wide variety of queuing systems and control mechanisms in simulation and computed the average age of information. We first study the buffer size alone to see how it affects the average age, and then we look at adding a packet deadline for such a system. We consider packet deadline control in the buffer only and in both the buffer and server, and we also compare the performance with a random deadline. We observe how the buffer size and deadline are optimized for the age, and we identify general trends for how to choose values of control mechanisms under different conditions of the packet generation rate. Lastly, we study the ability to replace packets in the buffer with newly arriving packets, and we are particularly interested in whether we can achieve the performance of such a system by controlling buffer size and deadline alone, for systems in which we do not have the ability to do packet replacement. C1 [Kam, Clement; Kompella, Sastry; Nguyen, Gam D.] US Navy, Res Lab, Div Informat Technol, Washington, DC 20375 USA. [Wieselthier, Jeffrey E.] Wieselthier Res, Silver Spring, MD USA. [Ephremides, Anthony] Univ Maryland, Elect & Comp Engn Dept, College Pk, MD 20742 USA. RP Kam, C (reprint author), US Navy, Res Lab, Div Informat Technol, Washington, DC 20375 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 2155-7578 BN 978-1-5090-3781-0 J9 IEEE MILIT COMMUN C PY 2016 BP 301 EP 306 PG 6 WC Telecommunications SC Telecommunications GA BG7LX UT WOS:000391433600052 ER PT S AU Macker, JP AF Macker, Joseph P. GP IEEE TI Hamlet: a Metaphor for Modeling and Analyzing Network Conversational Adjacency Graphs SO MILCOM 2016 - 2016 IEEE MILITARY COMMUNICATIONS CONFERENCE SE IEEE Military Communications Conference LA English DT Proceedings Paper CT 35th IEEE Military Communications Conference (MILCOM) CY NOV 01-03, 2016 CL Baltimore, MD SP IEEE, AFCEA, IEEE Commun Soc AB This paper presents a working model of conversational adjacency graphs (CAGs), both temporal and non-temporal, useful in analyzing interactive communication patterns amongst distributed network actors. The paper utilizes Shakespeare's Hamlet as a baseline reference model to outline the construction of representative weighted graph models of inter-actor conversations, both temporal and non-temporal. A sampling of related complex network analytic metrics both temporal and non-temporal variants is also presented on the respective graph models. We discuss a related experiment carried out in which network exchanges amongst distributed actor nodes are orchestrated within an emulated virtual wireless network scenario. A blind construction of the representative CAG is presented from received traffic logs without a-prior knowledge of the play ordering. In this case, source identification and reception ordering are the sole pieces of information used to estimate conversational adjacency relationships. We demonstrate that the example "blind" CAG construction from the empirically-measured model appears to reasonable match the baseline conversation graph model developed with a-priori information directly from play script. Issues and related ongoing work is discussed regarding the related analytics and potential applications of such models. C1 [Macker, Joseph P.] US Navy, Res Lab, Div Informat Technol, Washington, DC 20375 USA. RP Macker, JP (reprint author), US Navy, Res Lab, Div Informat Technol, Washington, DC 20375 USA. EM joseph.macker@nrl.navy.mil NR 14 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2155-7578 BN 978-1-5090-3781-0 J9 IEEE MILIT COMMUN C PY 2016 BP 582 EP 587 PG 6 WC Telecommunications SC Telecommunications GA BG7LX UT WOS:000391433600099 ER PT S AU Macker, JP AF Macker, Joseph P. GP IEEE TI An Improved Local Bridging Centrality Model for Distributed Network Analytics SO MILCOM 2016 - 2016 IEEE MILITARY COMMUNICATIONS CONFERENCE SE IEEE Military Communications Conference LA English DT Proceedings Paper CT 35th IEEE Military Communications Conference (MILCOM) CY NOV 01-03, 2016 CL Baltimore, MD SP IEEE, AFCEA, IEEE Commun Soc ID BETWEENNESS AB Classifying an edge or a node within a network graph according to its bridging characteristics is an important structural measure that has many practical analytic applications. Bridging centrality is a relatively new graph-based centrality metric for classifying nodes serving as key structural connections between dense components. A global bridging centrality has been previously introduced and requires global knowledge of the entire graph structure to perform the centrality computation. Recently, a local bridging centrality variant was also introduced that can be calculated locally requiring only limited local neighborhood graph information. We introduce an extended model of the recently introduced local bridging centrality based upon the the concept of a local "friends of friends" or 2-hop neighbor distance egocentric graph. We further develop and analyze the use of this extended centrality with both unweighted and weighted graph structures. Finally we present a series of comparative studies using a variety of graph models and examine ranking correlation comparisons with global bridging centrality results. Our analysis includes comparisons with both past literature models and newer temporal graph results of a 100-node mobile wireless network scenario with link weights representing dynamic reception quality. C1 [Macker, Joseph P.] US Navy, Res Lab, Div Informat Technol, Washington, DC 20375 USA. RP Macker, JP (reprint author), US Navy, Res Lab, Div Informat Technol, Washington, DC 20375 USA. EM joseph.macker@nrl.navy.mil NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2155-7578 BN 978-1-5090-3781-0 J9 IEEE MILIT COMMUN C PY 2016 BP 600 EP 605 PG 6 WC Telecommunications SC Telecommunications GA BG7LX UT WOS:000391433600102 ER PT S AU Nock, K Font, C Rupar, M AF Nock, Kristen Font, Carlos Rupar, Michael GP IEEE TI Adaptive Transmission Algorithms for a Hard-Switched FSO/RF Link SO MILCOM 2016 - 2016 IEEE MILITARY COMMUNICATIONS CONFERENCE SE IEEE Military Communications Conference LA English DT Proceedings Paper CT 35th IEEE Military Communications Conference (MILCOM) CY NOV 01-03, 2016 CL Baltimore, MD SP IEEE, AFCEA, IEEE Commun Soc DE Communication systems; communication system control; hard-switching; hybrid FSO/RF channels; transmission algorithms AB Hybrid communication systems exploit channel diversity to improve network performance. One such example is hybrid Free Space Optical (FSO)/Radio Frequency (RF) systems. These networks aim to merge the high capacity of FSO links with the high availability of RF links to form resilient high-bandwidth communications. When used for wireless communications, the main challenge is the dynamic response to variations in the atmospheric channel in adverse weather conditions. In this paper we simulate adaptive hard-switched transmission algorithms on a practical prototype hybrid system. FSO channel scenarios are formed based on climate data, and are emulated on the prototype system to compare the performance of the hybrid system to each solo carrier respectively. C1 [Nock, Kristen; Font, Carlos; Rupar, Michael] US Navy, Res Lab, Washington, DC 20375 USA. RP Nock, K (reprint author), US Navy, Res Lab, Washington, DC 20375 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2155-7578 BN 978-1-5090-3781-0 J9 IEEE MILIT COMMUN C PY 2016 BP 877 EP 881 PG 5 WC Telecommunications SC Telecommunications GA BG7LX UT WOS:000391433600149 ER PT S AU Sridharan, G Kumbhkar, R Mandayam, NB Seskar, I Kompella, S AF Sridharan, Gokul Kumbhkar, Ratnesh Mandayam, Narayan B. Seskar, Ivan Kompella, Sastry GP IEEE TI Physical-layer Security of NC-OFDM-based Systems SO MILCOM 2016 - 2016 IEEE MILITARY COMMUNICATIONS CONFERENCE SE IEEE Military Communications Conference LA English DT Proceedings Paper CT 35th IEEE Military Communications Conference (MILCOM) CY NOV 01-03, 2016 CL Baltimore, MD SP IEEE, AFCEA, IEEE Commun Soc DE low probability of exploitation; noncontiguous-OFDM; cyclostationary analysis; cyclic autocorrelation function ID CYCLOSTATIONARITY AB This paper examines the low-probability-of-exploitation (LPE) characteristics of a noncontiguous orthogonal frequency division multiplexing (NC-OFDM) system. NC-OFDM transmission is similar to OFDM transmission but only uses a subset of the frequencies either to avoid incumbent transmissions or due to tactical considerations. This paper considers an NC-OFDM transmission with a given set of active subcarriers and examines how an eavesdropper can infer transmission parameters such as total duration of an NC-OFDM symbol, length of the cyclic prefix, etc., using tools like the cyclostationary analysis. Such an analysis reveals that difficulty in estimating the total nominal bandwidth of NC-OFDM transmissions (bandwidth that includes frequencies occupied by inactive subcarriers) poses a fundamental challenge in determining the correct sampling rate and the subsequent retrieval of the transmitted signal. The analysis also shows that the features of the cyclic autocorrelation function (CAF) of an NC-OFDM transmission depend closely on the set of active subcarriers. Procedures for inferring the transmission parameters from the CAF are discussed while noting that the choice of an interleaved set of subcarriers introduces additional ambiguity in determining the transmission parameters. A PCA-based offline timing recovery scheme is proposed and used as a guidepost in determining the minimum rate at which an active set of subcarriers must be refreshed to avoid easy exploitation. Finally, key advantages of an NC-OFDM system over an OFDM system from an LPE-standpoint are discussed and suggestions for an LPE-centric design of NC-OFDM systems are made. C1 [Sridharan, Gokul; Kumbhkar, Ratnesh; Mandayam, Narayan B.; Seskar, Ivan] Rutgers State Univ, WINLAB, 671 Route 1, North Brunswick, NJ 08902 USA. [Kompella, Sastry] US Navy, Res Lab, Div Informat Technol, Washington, DC 20375 USA. RP Sridharan, G (reprint author), Rutgers State Univ, WINLAB, 671 Route 1, North Brunswick, NJ 08902 USA. EM gokul@winlab.rutgers.edu; ratnesh@winlab.rutgers.edu; narayan@winlab.rutgers.edu; seskar@winlab.rutgers.edu; sk@ieee.org 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 SN 2155-7578 BN 978-1-5090-3781-0 J9 IEEE MILIT COMMUN C PY 2016 BP 1101 EP 1106 PG 6 WC Telecommunications SC Telecommunications GA BG7LX UT WOS:000391433600186 ER PT S AU Cohen, AE Lee, YT Heide, DA Moran, TM AF Cohen, Aaron E. Lee, Yvette T. Heide, David A. Moran, Thomas M. GP IEEE TI A Novel Software Defined Radio Relay Method for Power Conservation SO MILCOM 2016 - 2016 IEEE MILITARY COMMUNICATIONS CONFERENCE SE IEEE Military Communications Conference LA English DT Proceedings Paper CT 35th IEEE Military Communications Conference (MILCOM) CY NOV 01-03, 2016 CL Baltimore, MD SP IEEE, AFCEA, IEEE Commun Soc DE Relay; VHF; Radio; High Altitude; Balloon AB To meet beyond line of sight (BLOS) communications requirements, a novel software defined radio relay method for power conservation is proposed. This method is able to achieve approximately 7.5 watt per relay node power savings for SNR challenged links (probability = 1/3), adjacent interference links (probability = 1/3), and 33% clear links (probability = 1/3). This is accomplished by dynamically adjusting the relay methodology between a low power amplifyand-forward (AF) relay method, a compress-and-forward (CF) relay method, and a power intensive decode-and-forward (DF) relay method. To demonstrate the novel architecture the following models were developed in MATLAB/Simulink and tested on an Avnet Zynq-7000 software defined radio (SDR) with Military RT 1439A radios: an audio FM transmitter model, an audio FM receiver model, an AF relay model, a CF relay model, a DF relay model, and the novel SDR relay model. C1 [Cohen, Aaron E.; Lee, Yvette T.; Heide, David A.; Moran, Thomas M.] US Navy, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Cohen, AE (reprint author), US Navy, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. OI Cohen, Aaron/0000-0002-1637-2103 NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2155-7578 BN 978-1-5090-3781-0 J9 IEEE MILIT COMMUN C PY 2016 BP 1131 EP 1136 PG 6 WC Telecommunications SC Telecommunications GA BG7LX UT WOS:000391433600191 ER PT S AU Dillon, M Fu, EH Gdula, D Mai, T Molnar, J Tran, L AF Dillon, Matthew Fu, Er-Hsien (Frank) Gdula, Daniel Trang Mai Molnar, Joseph Lan Tran GP IEEE TI Real and Virtual Wireless Radio Network Emulator SO MILCOM 2016 - 2016 IEEE MILITARY COMMUNICATIONS CONFERENCE SE IEEE Military Communications Conference LA English DT Proceedings Paper CT 35th IEEE Military Communications Conference (MILCOM) CY NOV 01-03, 2016 CL Baltimore, MD SP IEEE, AFCEA, IEEE Commun Soc AB In this paper, we discuss the use of the RF Wireless Network Environment emulator. Its architecture and capabilities are investigated. Four case studies of the RF network emulator are presented in this paper. The first case study simulates the slow-hopping anti-jamming waveform. The second case study is the application of spectrum masking, the third is the use of power difference of arrival localization algorithm to triangulate the location of a local unknown emitter and the fourth utilizes the emulator for testing and verification of a Multiple Link Common Data Link System. The network architecture and setup of the environment emulator for each case is discussed in detail. C1 [Dillon, Matthew; Trang Mai; Molnar, Joseph; Lan Tran] US Navy, Res Lab, Networks & Commun Syst Branch, Washington, DC 20375 USA. [Fu, Er-Hsien (Frank); Gdula, Daniel] KEYW Corp, Hanover, MD USA. RP Dillon, M (reprint author), US Navy, Res Lab, Networks & Commun Syst Branch, Washington, DC 20375 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2155-7578 BN 978-1-5090-3781-0 J9 IEEE MILIT COMMUN C PY 2016 BP 1279 EP 1285 PG 7 WC Telecommunications SC Telecommunications GA BG7LX UT WOS:000391433600216 ER PT S AU Ju, J Kim, D Ku, B Ko, H Han, DK AF Ju, Jaeyong Kim, Daehun Ku, Bonhwa Ko, Hanseok Han, David K. GP IEEE TI Online Multi-Object Tracking based on Hierarchical Association Framework SO PROCEEDINGS OF 29TH IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION WORKSHOPS, (CVPRW 2016) SE IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops LA English DT Proceedings Paper CT 29th IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW) CY JUN 26-JUL 01, 2016 CL Las Vegas, NV SP IEEE, IEEE Comp Soc AB Online multi-object tracking is one of the crucial tasks in time-critical computer vision applications. In this paper, the problem of online multi-object tracking in complex scenes from a single, static, un-calibrated camera is addressed. In complex scenes, it is still challenging due to frequent and prolonged occlusions, abrupt motion change of objects, unreliable detections, and so on. To handle these difficulties, this paper proposes a four-stage hierarchical association framework based on online tracking-by-detection strategy. For this framework, tracks and detections are divided into several groups depending on several cues obtained from association results with the proposed track confidence. In each association stage, different sets of tracks and detections are associated to handle the following problems simultaneously: track generation, progressive trajectory construction, track drift and fragmentation. The experimental results show the robustness and effectiveness of the proposed method compared with other state-of-the-art methods. C1 [Ju, Jaeyong; Kim, Daehun; Ku, Bonhwa; Ko, Hanseok] Korea Univ, Sch Elect Engn, Seoul, South Korea. [Han, David K.] Off Naval Res, Arlington, VA 22217 USA. RP Ju, J (reprint author), Korea Univ, Sch Elect Engn, Seoul, South Korea. EM jyju@ispl.korea.ac.kr; dhkim@ispl.korea.ac.kr; bhku@ispl.korea.ac.kr; hsko@korea.ac.kr; ctmkhan@gmail.com 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 SN 2160-7508 BN 978-1-5090-1437-8 J9 IEEE COMPUT SOC CONF PY 2016 BP 1273 EP 1281 DI 10.1109/CVPRW.2016.161 PG 9 WC Computer Science, Artificial Intelligence SC Computer Science GA BG7PP UT WOS:000391572100154 ER PT S AU Lawson, W Hiatt, L Sullivan, K AF Lawson, Wallace Hiatt, Laura Sullivan, Keith GP IEEE TI Detecting Anomalous Objects on Mobile Platforms SO PROCEEDINGS OF 29TH IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION WORKSHOPS, (CVPRW 2016) SE IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops LA English DT Proceedings Paper CT 29th IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW) CY JUN 26-JUL 01, 2016 CL Las Vegas, NV SP IEEE, IEEE Comp Soc ID BACKGROUND SUBTRACTION; EVENT DETECTION; SCENES AB We present an approach where a robot patrols a fixed path through an environment, autonomously locating suspicious or anomalous objects. To learn, the robot patrols this environment building a dictionary describing what is present. The dictionary is built by clustering features from a deep neural network. The objects present vary depending on the scene, which means that an object that is anomalous in one scene may be completely normal in another. To reason about this, the robot uses a computational cognitive model to learn the dictionary elements that are typically found in each scene. Once the dictionary and model has been built, the robot can patrol the environment matching objects against the dictionary, and querying the model to find the most likely objects present and to determine which objects (if any) are anomalous. We demonstrate our approach by patrolling two indoor and one outdoor environments. C1 [Lawson, Wallace; Hiatt, Laura; Sullivan, Keith] Naval Res Lab, Washington, DC 20375 USA. RP Lawson, W (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM ed.lawson@nrl.navy.mil; laura.hiatt@nrl.navy.mil; keith.sullivan@nrl.navy.mil NR 33 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-7508 BN 978-1-5090-1437-8 J9 IEEE COMPUT SOC CONF PY 2016 BP 1426 EP 1433 DI 10.1109/CVPRW.2016.179 PG 8 WC Computer Science, Artificial Intelligence SC Computer Science GA BG7PP UT WOS:000391572100172 ER PT S AU Poostchi, M Aliakbarpour, H Viguier, R Bunyak, F Palaniappan, K Seetharaman, G AF Poostchi, Mandieh Aliakbarpour, Hadi Viguier, Raphael Bunyak, Filiz Palaniappan, Kannappan Seetharaman, Guna GP IEEE TI Semantic Depth Map Fusion for Moving Vehicle Detection in Aerial Video SO PROCEEDINGS OF 29TH IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION WORKSHOPS, (CVPRW 2016) SE IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops LA English DT Proceedings Paper CT 29th IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW) CY JUN 26-JUL 01, 2016 CL Las Vegas, NV SP IEEE, IEEE Comp Soc ID ACTIVE CONTOURS; TRACKING; CAMERA; ROAD AB Wide area motion imagery from an aerial platform offers a compelling advantage in providing a global picture of traffic flows for transportation and urban planning that is complementary to the information from a network of ground-based sensors and instrumented vehicles. We propose an automatic moving vehicle detection system for wide area aerial video based on semantic fusion of motion information with projected building footprint information to significantly reduce the false alarm rate in urban scenes with many tall structures. Motion detections are obtained using the flux tensor and combined with a scene level depth mask to identify tall structures using height information derived from a dense 3D point cloud estimated using multiview stereo from the same source imagery or a prior model. The trace of the flux tensor provides robust spatio-temporal information of moving edges including the motion of tall structures caused by parallax effects. The parallax induced motions are filtered out by incorporating building depth maps obtained from dense urban 3D point clouds. Using a level-set based geodesic active contours framework, the coarse thresholded tall structures depth masks evolved and stopped at the actual building boundaries. Experiments are carried out on a cropped 2k x 2k region of interest for 200 frames from Albuquerque urban aerial imagery. An average precision of 83% and recall of 76% have been reported using an object-level detection performance evaluation method. C1 [Poostchi, Mandieh; Aliakbarpour, Hadi; Viguier, Raphael; Bunyak, Filiz; Palaniappan, Kannappan] Univ Missouri, Dept Comp Sci, Columbia, MO 65211 USA. [Seetharaman, Guna] US Naval Res Lab, Washington, DC USA. RP Poostchi, M (reprint author), Univ Missouri, Dept Comp Sci, Columbia, MO 65211 USA. EM mpoostchi@mail.missouri.edu; aliakbarpourh@missouri.edu; rvbb3@missouri.edu; bunyak@missouri.edu; palaniappan@missouri.edu; guna@ieee.org NR 46 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-7508 BN 978-1-5090-1437-8 J9 IEEE COMPUT SOC CONF PY 2016 BP 1575 EP 1583 DI 10.1109/CVPRW.2016.196 PG 9 WC Computer Science, Artificial Intelligence SC Computer Science GA BG7PP UT WOS:000391572100189 ER PT J AU King, JR McDowell, LK AF King, Joshua R. McDowell, Luke K. GP IEEE TI Correcting Relational Bias to Improve Classification in Sparsely-Labeled Networks SO PROCEEDINGS OF 3RD IEEE/ACM INTERNATIONAL CONFERENCE ON DATA SCIENCE AND ADVANCED ANALYTICS, (DSAA 2016) LA English DT Proceedings Paper CT 3rd IEEE/ACM International Conference on Data Science and Advanced Analytics (DSAA) CY OCT 17-19, 2016 CL Montral, CANADA SP IEEE, Amer Stat Assoc, Infosys, IEEE Big Data, Liaoning Tech Univ, Tata Consultancy Serv, KDD, Univ Alberta, Int Inst Data & Anal, IEEE Task Force Data Sci & Adv Analyt, IEEE Task Force Behavioral Econ & Socio Cultural Comp, ACM, IEEE Computat Intelligence Soc, IEEE Comp Soc ID COLLECTIVE CLASSIFICATION AB Many classification problems involve nodes that have a natural connection between them, such as links between people, pages, or social network accounts. Recent work has demonstrated how to learn relational dependencies from these links, then leverage them as predictive features. However, while this can often improve accuracy, the use of linked information can also lead to cascading prediction errors, especially in the common-case when a network is only sparsely-labeled. In response, this paper examines several existing and new methods for correcting the "relational bias" that leads to such errors. First, we explain how existing approaches can be divided into "resemblance-based" and "assignment-based" methods, and provide the first experimental comparison between them. We demonstrate that all of these methods can improve accuracy, but that the former type typically leads to better accuracy. Moreover, we show that the more flexible methods typically perform best, motivating a new assignment-based method that often improves accuracy vs. a more rigid method. In addition, we demonstrate for the first time that some of these methods can also improve accuracy when combined with Gibbs sampling for inference. However, we show that, with Gibbs, correcting relational bias also requires improving label initialization, and present two new initialization methods that yield large accuracy gains. Finally, we evaluate the effects of relational bias when "neighbor attributes," recently-proposed additions that can provide more stability during inference, are included as model features. We show that such attributes reduce the negative impact of bias, but that using some form of bias correction remains important for achieving maximal accuracy. C1 [King, Joshua R.; McDowell, Luke K.] US Naval Acad, Dept Comp Sci, Annapolis, MD 21402 USA. RP King, JR (reprint author), US Naval Acad, Dept Comp Sci, Annapolis, MD 21402 USA. EM jrkingjr9@gmail.com; lmcdowel@usna.edu 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 978-1-5090-5206-6 PY 2016 BP 31 EP 40 DI 10.1109/DSAA.2016.11 PG 10 WC Computer Science, Information Systems SC Computer Science GA BG7PT UT WOS:000391583800004 ER PT J AU Nussbaum, D Pickl, S Dupuy, A Nistor, MS AF Nussbaum, Daniel Pickl, Stefan Dupuy, Arnold Nistor, Marian Sorin BE Koch, R Rodosek, G TI The Nexus Between Cyber Security and Energy Security SO PROCEEDINGS OF THE 15TH EUROPEAN CONFERENCE ON CYBER WARFARE AND SECURITY (ECCWS 2016) LA English DT Proceedings Paper CT 15th European Conference on Cyber Warfare and Security (ECCWS) CY JUL 07-08, 2016 CL Univ Bundeswehr, Munich, GERMANY HO Univ Bundeswehr DE energy security; cyber security; energy-cyber nexus; critical infrastructure; graph-based approach AB The centrality of cyber and the issues surrounding it are incontrovertible in today's world. This is true across practically every domain of human behavior, of which some examples are warfare, business, and economics. What is less recognized are the critical linkages that exist between the incontrovertible centrality of cyber and other critical resource issues, three examples of which are water supply, transport security and especially energy security. We propose a special graph-based approach which can be used for all of these critical infrastructures. C1 [Nussbaum, Daniel] Naval Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA. [Nussbaum, Daniel] Naval Postgrad Sch, Energy Acad Grp, Monterey, CA 93943 USA. [Pickl, Stefan] Univ Bundeswehr Munchen, Operat Res, Neubiberg, Germany. [Dupuy, Arnold] Booz Allen Hamilton Contract Support Deputy Assit, Washington, DC USA. [Nistor, Marian Sorin] Univ Bundeswehr Munchen, Dept Comp Sci, Neubiberg, Germany. RP Nussbaum, D (reprint author), Naval Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.; Nussbaum, D (reprint author), Naval Postgrad Sch, Energy Acad Grp, Monterey, CA 93943 USA. EM dnussbaum@nps.edu; stefan.pickl@unibw.de; arnold.c.dupuy.ctr@mail.mil; sorin.nistor@unibw.de OI Nistor, Marian Sorin/0000-0003-1827-9989 FU People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme FP7 under REA Grant [317382] FX Research of author Marian Sorin Nistor, was funded by the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme FP7/2007-2013/ under REA Grant Agreement Number 317382. NR 14 TC 0 Z9 0 U1 0 U2 0 PU ACAD CONFERENCES LTD PI NR READING PA CURTIS FARM, KIDMORE END, NR READING, RG4 9AY, ENGLAND BN 978-1-910810-96-5 PY 2016 BP 228 EP 236 PG 9 WC Computer Science, Theory & Methods; International Relations SC Computer Science; International Relations GA BG7SO UT WOS:000391677000028 ER PT S AU Hwang, CO Given, JA Kim, Y Lee, S Lee, S AF Hwang, Chi-Ok Given, James A. Kim, Youngwon Lee, Sunggeun Lee, Sungbae BE Korozlu, N Pokharel, B Abourriche, A Salvi, DTBD AlMosaw, AI Chotisuwan, S TI First- and last-passage Monte Carlo algorithms for charge density on a conducting surface SO PROCEEDINGS OF THE 2016 INTERNATIONAL CONFERENCE ON INNOVATIVE MATERIAL SCIENCE AND TECHNOLOGY (IMST 2016) SE Advances in Intelligent Systems Research LA English DT Proceedings Paper CT International Conference on Innovative Material Science and Technology (IMST) CY AUG 19-21, 2016 CL Shenzhen, PEOPLES R CHINA DE monte carlo; first-passage; last-passage; charge density ID UNIT CUBE; HYDRODYNAMIC FRICTION; CAPACITANCE; WALK AB First-passage and last-passage algorithms, which are two diffusion Monte Carlo methods, can obtain charge density on a conducting surface. In general, the first-passage algorithms have been used to obtain the capacitance of the arbitrary-shaped conductors. In contrast, the last-passage algorithm was introduced to calculate the charge density at a general point on a conducting surface by using the diffusing paths that initiate at that point. Here, the conductor was held at unit voltage without any charge outside of the conductor. The two algorithms are inherently related. The last-passage algorithm is the time reversal of the first-passage algorithm. In this paper, it is shown that Kai Lai Chung's last-passage algorithm is equivalent to the first-passage algorithm. In addition, based on the time reversality of the last-passage algorithms we extend the last-passage algorithm to calculate the charge density with a charge distribution and a dielectric interface also. Lastly, we mention the recent progress in which we can obtain the charge density on a conducting surface under the general non-constant Dirichlet boundary conditions. C1 [Hwang, Chi-Ok; Lee, Sungbae] GIST, Div Liberal Arts & Sci, GIST Coll, Gwangju, South Korea. [Given, James A.] Naval Res Lab, MS5720,4555 Overlook Ave SW, Washington, DC 20375 USA. [Kim, Youngwon] GIST, Dept Phys & Photon Sci, Gwangju, South Korea. [Lee, Sunggeun] GIST, Sch Elect Engn & Comp Sci, Gwangju, South Korea. RP Hwang, CO (reprint author), GIST, Div Liberal Arts & Sci, GIST Coll, Gwangju, South Korea. EM chwang@gist.ac.kr NR 21 TC 0 Z9 0 U1 1 U2 1 PU ATLANTIS PRESS PI PARIS PA 29 AVENUE LAVMIERE, PARIS, 75019, FRANCE SN 1951-6851 BN 978-94-6252-269-5 J9 ADV INTEL SYS RES PY 2016 VL 139 BP 139 EP 147 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA BG7TG UT WOS:000391726800021 ER PT S AU Zheng, W Liu, X Lupke, G Hanbicki, AT Jonker, BT AF Zheng, Wei Liu, Xiao Lupke, Gunter Hanbicki, Aubrey T. Jonker, Berend T. BE Drouhin, HJ Wegrowe, JE Razeghi, M TI The Road Towards Nonlinear Magneto-Plasmonics SO SPINTRONICS IX SE Proceedings of SPIE LA English DT Proceedings Paper CT 9th Spintronics Symposium / SPIE Conference CY AUG 28-SEP 01, 2016 CL San Diego, CA SP SPIE DE Nonlinear Magneto-Plasmonics; Magneto-Plasmonics; magnetic induced second harmonic generation; nano structures ID 2ND-HARMONIC GENERATION; SURFACE-PLASMONS; METALLIC-FILMS; MAGNETOPLASMONICS; OPTICS AB Nonlinear magneto-plasmonics (NMP) describes systems where nonlinear optics, magnetics and plasmonics are all involved. NMP can be referred to as interdisciplinary studies at the intersection of Nonlinear Plasmonics (NP), Magneto-Plasmonics (MP), and nanoscience. In NMP systems, nanostructures are the bases, Surface Plasmons (SPs) work as catalyst due to strong field enhancement effects, and the nonlinear magneto-optical Kerr effect (nonlinear MOKE) plays an important role as a characterization method. Many new effects were discovered recently, which include enhanced magnetization-induced harmonic generation, controlled and enhanced magnetic contrast, magneto-chiral effect, correlation between giant magnetroresistance (GMR) and nonlinear MOKE, etc. We review the structures, experiments, findings, and the applications of NMP. C1 [Zheng, Wei; Liu, Xiao; Lupke, Gunter] Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23185 USA. [Hanbicki, Aubrey T.; Jonker, Berend T.] Naval Res Lab, Mat Sci & Technol Div, Washington, DC 20375 USA. RP Zheng, W (reprint author), Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23185 USA. EM wzheng@wm.edu NR 23 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 978-1-5106-0254-0 J9 PROC SPIE PY 2016 VL 9931 AR UNSP 99312W DI 10.1117/12.2238941 PG 4 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG7MU UT WOS:000391482500029 ER PT S AU Dermer, CD AF Dermer, Charles D. BE Fornengo, N Regis, M Zechlin, HS TI Theory of high-energy messengers SO XIV INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS (TAUP 2015), PTS 1-7 SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 14th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 07-11, 2015 CL Torino, ITALY SP Univ Torino, Ist Nazl Fisica Nucl, Ist Nazl Astrofisica, Agenzia Spaziale Italiana, Accademia Scienze Torino, Consorzio Interuniversitario Fis Spaziale, Int Union Pure & Appl Phys ID EXTRAGALACTIC BACKGROUND LIGHT; GAMMA-RAY EMISSION; INTERGALACTIC MAGNETIC-FIELD; LARGE-AREA TELESCOPE; COSMIC-RAYS; TEV BLAZARS; ARRIVAL DIRECTIONS; NEUTRAL BEAMS; CONSTRAINTS; NEUTRINOS AB Knowledge of the distant high-energy universe comes from photons, ultra-high energy cosmic rays (UHECRs), high-energy neutrinos, and gravitational waves. The theory of high-energy messengers reviewed here focuses on the extragalactic background light at all wavelengths, cosmic rays and magnetic fields in intergalactic space, and neutrinos of extragalactic origin. Comparisons are drawn between the intensities of photons and UHECRs in intergalactic space, and the high-energy neutrinos recently detected with IceCube at about the Waxman-Bahcall flux. Source candidates for UHECRs and high-energy neutrinos are reviewed, focusing on star-forming and radio-loud active galaxies. HAWC and Advanced LIGO are just underway, with much anticipation. C1 [Dermer, Charles D.] US Naval Res Lab, Code 7653,4555 Overlook Ave SW, Washington, DC 20375 USA. RP Dermer, CD (reprint author), US Naval Res Lab, Code 7653,4555 Overlook Ave SW, Washington, DC 20375 USA. EM Charles.Dermer@outlook.com NR 55 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2016 VL 718 DI 10.1088/1742-6596/718/2/022008 PG 12 WC Astronomy & Astrophysics; Physics, Particles & Fields; Physics, Mathematical SC Astronomy & Astrophysics; Physics GA BG7NA UT WOS:000391490200008 ER PT J AU Crouse, DF AF Crouse, David Frederic GP IEEE TI Bearings-Only Localization Using Direction Cosines SO 2016 19TH INTERNATIONAL CONFERENCE ON INFORMATION FUSION (FUSION) LA English DT Proceedings Paper CT 19th International Conference on Information Fusion (FUSION) CY JUL 05-08, 2016 CL Heidelberg, GERMANY SP Robert Bosch GmbH, ATLAS ELEKTRONIK, RANDOM SETS LLC, Syst & Technol Res, Metron, Continental, AIRBUS, BECKHOFF, Springer, Int Soc Informat Fus, Intelligent Sensor Actuator Syst, Karlsruhe Inst Technol, Fraunhofer, VDE, COMO, Conf Catalysts LLC, IEEE, AESS Soc AB Algorithms for localizing a target given multiple simultaneous direction measurements to the target (triangulation) are useful for passively localizing emitters. This paper derives an explicit suboptimal least squares solution to 2D and 3D passive localization using direction cosines (a natural output of an antenna array processing algorithm) as well as refinement techniques. A consistent covariance matrix can be obtained using cubature integration. C1 [Crouse, David Frederic] US Navy, Res Lab, 4555 Overlook Ave,SW, Washington, DC 20375 USA. RP Crouse, DF (reprint author), US Navy, Res Lab, 4555 Overlook Ave,SW, Washington, DC 20375 USA. EM david.crouse@nrl.navy.mil NR 27 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-9964-5274-8 PY 2016 BP 304 EP 311 PG 8 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG7HA UT WOS:000391273400042 ER PT J AU Pothitos, M Tummala, M Scrofani, J McEachen, J AF Pothitos, Michail Tummala, Murali Scrofani, James McEachen, John GP IEEE TI Multi-sensor Image Fusion and Target Classification for Improved Maritime Domain Awareness SO 2016 19TH INTERNATIONAL CONFERENCE ON INFORMATION FUSION (FUSION) LA English DT Proceedings Paper CT 19th International Conference on Information Fusion (FUSION) CY JUL 05-08, 2016 CL Heidelberg, GERMANY SP Robert Bosch GmbH, ATLAS ELEKTRONIK, RANDOM SETS LLC, Syst & Technol Res, Metron, Continental, AIRBUS, BECKHOFF, Springer, Int Soc Informat Fus, Intelligent Sensor Actuator Syst, Karlsruhe Inst Technol, Fraunhofer, VDE, COMO, Conf Catalysts LLC, IEEE, AESS Soc DE image fusion; machine learning; feature selection; neural networks; speeded-up robust features AB In this paper, we propose a scheme for classification of maritime targets through fusion of images collected from dissimilar sensors with an objective to improve maritime domain awareness. Low- and medium-level fusion methods are applied to three types of image data-visual, thermal, multi-spectral-using features obtained from the speeded-up robust features algorithm. The goal was to implement the classification scheme using machine learning techniques. Results indicate that multi-spectral images from low-level fusion yielded the best classification performance. Artificial neural networks are used to derive the classification results and demonstrate the ability to obtain results in a timely manner that could accommodate near real-time classification. C1 [Pothitos, Michail] Hellen Navy, Operat Evaluat Directorate Hellen Fleet HQ, Athens, Greece. [Tummala, Murali; Scrofani, James; McEachen, John] US Navy, Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA. RP Pothitos, M (reprint author), Hellen Navy, Operat Evaluat Directorate Hellen Fleet HQ, Athens, Greece. EM pothymike@yahoo.gr; mtummala@nps.edu; jwscrofa@nps.edu; mceachen@nps.edu NR 23 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-9964-5274-8 PY 2016 BP 1170 EP 1177 PG 8 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG7HA UT WOS:000391273400156 ER PT S AU Chen, CA Stoleru, R Xie, GG AF Chen, Chien-An Stoleru, Radu Xie, Geoffrey G. GP IEEE TI Energy-efficient and Fault-tolerant Mobile Cloud Storage SO 2016 5TH IEEE INTERNATIONAL CONFERENCE ON CLOUD NETWORKING (IEEE CLOUDNET) SE IEEE International Conference on Cloud Networking LA English DT Proceedings Paper CT 5th IEEE International Conference on Cloud Networking (IEEE CloudNet) CY OCT 03-05, 2016 CL Pisa, ITALY SP IEEE, IEEE Commun Soc, CLOUD4WI, IEEE Software Defined Networks, Juniper Networks, NetResults, NEXTWORKS, Welcome italia, IEEE Comp Soc, IEEE SDN Initiat AB Mobile Cloud Storage (MCS) systems - cloud storage on mobile devices without access to remote data center-type cloud resources, are not only interesting from a theoretical point of view, as they pose the most challenging design settings, but also important in enabling real-world applications such as disaster relief, military operation, and mining in remote areas. Central to MCS design is how to minimize the energy consumption of the battery-powered devices while still maintaining the data reliability and availability. Unfortunately, existing solutions do not model the energy-efficiency and data reliability of MCS in an integrated manner. Their formulations predominantly make use of heuristics, which may over-emphasize energy efficiency and not provide sufficient data reliability for some applications. In this paper, we design an energy-efficient distributed data storage framework in MCS under explicit data reliability requirement. The novel formulations produce a reliability-compliant and energy-efficient MCS system. The performance characteristics of our solutions are extensively evaluated through both real-world and synthetic mobility traces. C1 [Chen, Chien-An; Stoleru, Radu] Texas A&M Univ, Dept Comp Sci & Engn, College Stn, TX 77843 USA. [Xie, Geoffrey G.] Naval Postgrad Sch, Dept Comp Sci, Monterey, CA USA. RP Chen, CA (reprint author), Texas A&M Univ, Dept Comp Sci & Engn, College Stn, TX 77843 USA. EM jaychen@cse.tamu.edu; stoleru@cse.tamu.edu; xie@nps.edu NR 18 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2374-3239 BN 978-1-5090-5093-2 J9 IEEE INT CONF CL NET PY 2016 BP 51 EP 57 DI 10.1109/CloudNet.2016.13 PG 7 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems SC Computer Science GA BG7LN UT WOS:000391421700009 ER PT S AU Fiondella, L Nikora, A Wandji, T AF Fiondella, Lance Nikora, Allen Wandji, Thierry GP IEEE TI Software Reliability and Security: Challenges and Crosscutting Themes SO 2016 IEEE 27TH INTERNATIONAL SYMPOSIUM ON SOFTWARE RELIABILITY ENGINEERING WORKSHOPS (ISSREW) SE IEEE International Symposium on Software Reliability Engineering Workshops LA English DT Proceedings Paper CT 27th IEEE International Symposium on Software Reliability Engineering (ISSRE) CY OCT 23-27, 2016 CL Ottawa, CANADA SP IEEE, Carleton Univ, IEEE Comp Soc, Carleton Univ, Fac Engn & Design, Reliabil Soc AB Security has emerged as one of the most significant challenges to organizations that develop software system. As software systems involvement in managing financial systems, infrastructure, and industrial systems increases, the potential consequences of unauthorized access to those systems becomes more and more severe. We examine relationships between software reliability engineering and cybersecurity to develop more effective ways of assessing and improving system security. C1 [Fiondella, Lance] Univ Massachusetts, Elect & Comp Engn, N Dartmouth, MA 02747 USA. [Nikora, Allen] CALTECH, NASA, Jet Prop Lab, Pasadena, CA 91125 USA. [Wandji, Thierry] Naval Air Syst Command, Patuxent River, MD 20670 USA. RP Fiondella, L (reprint author), Univ Massachusetts, Elect & Comp Engn, N Dartmouth, MA 02747 USA. EM lfiondella@umassd.edu; allen.p.nikora@jpl.nasa.gov; ketchiozo.wandji@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 2375-821X BN 978-1-5090-3601-1 J9 IEEE INT SYMP SOFTW PY 2016 BP 55 EP 56 DI 10.1109/ISSREW.2016.47 PG 2 WC Computer Science, Software Engineering; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG7JT UT WOS:000391391100016 ER PT S AU Raeker, BO Rudolph, SM AF Raeker, Brian O. Rudolph, Scott M. GP IEEE TI Verification of Radiation Pattern Control Using a Cylindrical Metasurface SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers AB We present transmission measurement results of a cylindrical impedance metasurface used to reshape the radiation pattern of an enclosed two-dimensional current line source. The metasurface was fabricated using printed circuit board methods and measured in a parallel plate waveguide. Measurement results are in agreement with the desired azimuthal image pattern, validating the design procedure of the cylindrical metasurface. C1 [Raeker, Brian O.; Rudolph, Scott M.] US Naval Res Lab, Washington, DC 20375 USA. RP Raeker, BO (reprint author), US Naval Res Lab, Washington, DC 20375 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 93 EP 94 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377100045 ER PT S AU Raeker, BO Rudolph, SM AF Raeker, Brian O. Rudolph, Scott M. GP IEEE TI Spherical Metasurface for Radiation Pattern Control SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers AB We present a method to reshape the radiation pattern of an antenna into an arbitrarily defined pattern through the use of a spherical impedance metasurface that completely encloses a source. We derive analytical equations to determine the sheet impedance distribution of the spherical metasurface to realize a 4 pi steradian desired electric field image pattern. To demonstrate the performance, we reshape the radiation pattern of a small dipole current source into a near-field pattern taking the shape of a nautical anchor. C1 [Raeker, Brian O.; Rudolph, Scott M.] US Naval Res Lab, Washington, DC 20375 USA. RP Raeker, BO (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM brian.raeker@nrl.navy.mil; scott.rudolph@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 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 95 EP 96 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377100046 ER PT S AU Logan, JT Kindt, RW Lee, MY Vouvakis, MN AF Logan, John T. Kindt, Rick W. Lee, Michael Y. Vouvakis, Marinos N. GP IEEE TI Opportunities and Advances in Ultra-Wideband Electronically Scanned Arrays SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers AB This paper discusses bandwidth and polarization challenges in modern dual-polarized ultra-wideband (UWB) electronically scanned array (ESA) aperture design and two recent solution advances aiming to remedy such issues: a 6: 1 Planar Ultrawideband Modular Antenna (PUMA) array and a 10: 1 Sliced Notch Antenna (SNA) array. The proposed arrays enable wide bandwidth, low cross-polarization, and high efficiency from both low-profile and high-profile array research directions to appeal to a wider variety of applications and design embodiments. The proposed UWB-ESAs are analyzed alongside a conventional 10: 1 all-metal Vivaldi array to shed light upon modern design trends and implications. C1 [Logan, John T.; Lee, Michael Y.; Vouvakis, Marinos N.] Univ Massachusetts Amherst, ECE Dept, Amherst, MA 01003 USA. [Kindt, Rick W.] US Navy, Res Lab, Div Radar, Washington, DC 20375 USA. RP Logan, JT (reprint author), Univ Massachusetts Amherst, ECE Dept, Amherst, MA 01003 USA. OI Logan, John/0000-0002-5174-6588 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 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 431 EP 432 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377100207 ER PT S AU Lee, MY Kindt, RW Vouvakis, MN AF Lee, Michael Y. Kindt, Rick W. Vouvakis, Marinos N. GP IEEE TI Planar Ultrawideband Modular Antenna (PUMA) Wavelength-Scaled Array SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers AB The wavelength-scaled array architecture reduces element count and associated T/R module costs by replacing a portion of a periodic array by fewer, but scaled up elements that are excited only at lower frequency bands. We propose the implementation of the wavelength-scaled array using low-cost Planar Ultrawideband Modular Antenna (PUMA) radiators to further reduce cost, profile and improve polarization performance. Full wave finite array simulations are used to quantify the impedance and far-field radiation performance of the PUMA wavelengthscaled array and to compare it to conventional square array counterparts. C1 [Lee, Michael Y.; Vouvakis, Marinos N.] Univ Massachusetts Amherst, Dept ECE, Amherst, MA 01003 USA. [Kindt, Rick W.] US Navy, Res Lab, Washington, DC 20375 USA. RP Lee, MY (reprint author), Univ Massachusetts Amherst, Dept ECE, Amherst, MA 01003 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 435 EP 436 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377100209 ER PT S AU Rudolph, SM AF Rudolph, Scott M. GP IEEE TI Nonlinear Fresnel Zone Plate Reflector SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers AB This paper describes a nonlinear Fresnel zone plate reflector designed to operate at 2.8GHz. The alternating Fresnel zones of the reflector are made from two different nonlinear metamaterials: one that reflects like a short circuit at low incident power levels and another that reflects like an open circuit. Both metamaterials transition from highly reflective to highly transparent as the incident power increases. Additionally, as the metamaterials transition to their transparent state the phase difference between their reflection coefficients decreases substantially, causing the reflector to lose its focusing capabilities. In this way, the field observed at the focus is reduced both as a consequence of the metamaterials becoming transparent as well as the reflector defocusing. C1 [Rudolph, Scott M.] US Navy, Res Lab, Washington, DC 20375 USA. RP Rudolph, SM (reprint author), US Navy, Res Lab, Washington, DC 20375 USA. EM scott.rudolph@nrl.navy.mil 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 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 727 EP 728 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377100351 ER PT S AU Dorsey, WM Mital, R Scholnik, DP AF Dorsey, W. Mark Mital, Rashmi Scholnik, Dan P. GP IEEE TI Phase-Only Synthesis of Omnidirectional Patterns with Multiple Nulls from a Uniform Circular Array SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers DE Antenna phased arrays; Optimisation; Beamforming arrays AB An unconstrained optimization technique is presented for the phase-only synthesis of omnidirectional array patterns with multiple null regions from a circular array. C1 [Dorsey, W. Mark; Mital, Rashmi; Scholnik, Dan P.] US Navy, Res Lab, Div Radar, Washington, DC 20375 USA. RP Dorsey, WM (reprint author), US Navy, Res Lab, Div Radar, Washington, DC 20375 USA. EM mark.dorsey@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 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 765 EP 766 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377100370 ER PT S AU Rao, SM AF Rao, Sadasiva M. GP IEEE TI EM Scattering by Electrically Large Inhomogeneous Dielectric Objects - MOM/Power Series Solution Approach SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers AB In this work, we extend the recently developed method of moments/power series solution (MOM-PS) procedure to obtain radar cross section (RCS) of an inhomogeneous dielectric body due to a plane wave incidence. The procedure involves modeling the body using tetrahedron cells, assigning material parameters to each cell and employing Shaubert-Wilton-Glisson (SWG) functions to approximate the unknown flux density induced in the body. Next, we apply the recently developed MOM-PS procedure to solve for the unknowns. The new procedure is simple and yields accurate results for the material body problem. C1 [Rao, Sadasiva M.] US Navy, Res Lab, Div Radar, Washington, DC 20375 USA. RP Rao, SM (reprint author), US Navy, Res Lab, Div Radar, Washington, DC 20375 USA. NR 3 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 1575 EP 1576 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377100763 ER PT S AU Kindt, R Mital, R Vouvakis, M AF Kindt, Rick Mital, Rashmi Vouvakis, Marinos GP IEEE TI 3:1-Bandwidth Millimeter-Wave PUMA Array SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers AB A planar-printed PUMA array at 4mm scale is presented that operates over roughly 12GHz to 38GHz (approximately 3:1 bandwidth), demonstrating PUMA technology manufactured at millimeter-wave scales. The simple design consists of a single layer of Rogers 3003 material plated front and back with through vias, sandwiched between a structural metal backing and a superstrate radome layer. The aperture is less than 0.4 wavelengths thick at the highest frequency of operation. Scan performance is excellent, with VSWR <2 for 45-degree scans in all planes, VSWR <3 for 60-degree scans in all planes and over all frequencies. Measured results are presented. C1 [Kindt, Rick; Mital, Rashmi] Naval Res Lab, Div Radar, Washington, DC 20375 USA. [Vouvakis, Marinos] Univ Massachusetts, ECE Dept, Amherst, MA 01003 USA. RP Kindt, R (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 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 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 1867 EP 1868 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377100906 ER PT S AU Good, BL AF Good, Brandon L. GP IEEE TI Effective Properties of Cylinders in a Square Lattice SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers ID ANTIREFLECTIVE PROPERTIES AB Periodic subwavelength structures on a boundary can enhance the transmission through the boundary. While rigorous methods are accurate for designing these structures, recent methods could benefit from an improved effective medium approximation. In this work, a modified Rayleigh mixture formula is used to approximate the effective properties of periodic cylinders in a square lattice for transverse electromagnetic plane waves. The modified Rayleigh mixture formula outperforms the Maxwell Garnett formula where the height is greater than the diameter. A comparison is shown for completeness. C1 [Good, Brandon L.] US Navy, Ctr Surface Warfare, Carderock Div, Bethesda, MD 20084 USA. RP Good, BL (reprint author), US Navy, Ctr Surface Warfare, Carderock Div, Bethesda, MD 20084 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 1985 EP 1986 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377100965 ER PT S AU Good, BL Roper, DA Mirotznik, MS Good, AJ AF Good, Brandon L. Roper, David A., Jr. Mirotznik, Mark S. Good, Austin J. GP IEEE TI Effective Media Theory of Dry Powder Dot Printing SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers AB Fiberglass composites with three dimensionally varying dielectric properties have been created using a novel dry powder dot deposition system. The out of plane and in plane effective properties were previously determined empirically with seperate methods. This work establishes an analytic effective media approach to characterizing the dielectric constant for both cases. C1 [Good, Brandon L.; Roper, David A., Jr.] US Navy, Ctr Surface Warfare, Carderock Div, Bethesda, MD 20084 USA. [Mirotznik, Mark S.; Good, Austin J.] Univ Delaware, Dept Elect & Comp Engn, Newark, DE USA. RP Good, BL (reprint author), US Navy, Ctr Surface Warfare, Carderock Div, Bethesda, MD 20084 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 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 1987 EP 1988 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377100966 ER PT S AU Good, BL Roper, DA AF Good, Brandon L. Roper, David A., Jr. GP IEEE TI Luneburg Lens Created from Distributed Water Cylinders SO 2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM SE IEEE Antennas and Propagation Society International Symposium LA English DT Proceedings Paper CT IEEE-Antennas-and-Propagation-Society International Symposium CY JUN 26-JUL 01, 2016 CL Fajardo, PR SP Inst Elect & Elect Engineers Antennas & Propagat Soc, Inst Elect & Elect Engineers AB In this work, a Luneburg lens operating at 15 GHz is created from water cylinders. The approach uses effective media of water and an iterative dielectric distribution method to achieve the Luneburg lens electromagnetic profile. From the approach, the focusing of energy using the proposed Luneburg lens is shown numerically. While the approach is successfully creates a luneburg lens, the losses due to the water significant. C1 [Good, Brandon L.; Roper, David A., Jr.] Naval Surface Warfare Ctr, Carderock Div, Bethesda, MD 20817 USA. RP Good, BL (reprint author), Naval Surface Warfare Ctr, Carderock Div, Bethesda, MD 20817 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 1522-3965 BN 978-1-5090-2886-3 J9 IEEE ANTENNAS PROP PY 2016 BP 2157 EP 2158 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG3XZ UT WOS:000388377101045 ER PT S AU Baker, CC Friebele, EJ Askins, CG Hunt, MP Marcheschi, BA Fontana, J Peele, JR Kim, W Sanghera, J Zhang, J Pattnaik, RK Merkle, LD Dubinskii, M Chen, YM Dajani, IA Mart, C AF Baker, Colin C. Friebele, E. Joseph Askins, Charles G. Hunt, Michael P. Marcheschi, Barbara A. Fontana, Jake Peele, John R. Kim, Woohong Sanghera, Jasbinder Zhang, Jun Pattnaik, Radha K. Merkle, Larry D. Dubinskii, Mark chen, Youming Dajani, Iyad A. Mart, Cody BE Ballato, J TI Nanoparticle Doping for Improved Er-doped Fiber Lasers SO FIBER LASERS XIII: TECHNOLOGY, SYSTEMS, AND APPLICATIONS SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Fiber Lasers XIII -Technology, Systems, and Applications CY FEB 15-18, 2016 CL San Francisco, CA SP SPIE, NKT Photon A S, PolarOnyx Inc DE Erbium doped fiber; nanoparticles; high energy lasers; fiber lasers ID BRILLOUIN-SCATTERING SUPPRESSION AB A nanoparticle (NP) doping technique was used for making erbium-doped fibers (EDFs) for high energy lasers. The nanoparticles were doped into the silica soot of preforms, which were drawn into fibers. The Er luminescence lifetimes of the NP-doped cores are longer than those of corresponding solution-doped silica, and substantially less Al is incorporated into the NP-doped cores. Optical-to-optical slope efficiencies of greater than 71% have been measured. Initial investigations of stimulated Brillouin scattering (SBS) have indicated that SBS suppression is achieved by NP doping, where we observed a low intrinsic Brillouin gain coefficient, of similar to 1x 10(-11) m/W and the Brillouin bandwidth was increased by 2.5x compared to fused silica. C1 [Baker, Colin C.; Friebele, E. Joseph; Askins, Charles G.; Hunt, Michael P.; Marcheschi, Barbara A.; Fontana, Jake; Kim, Woohong; Sanghera, Jasbinder] US Navy, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Peele, John R.] Sotera Def Syst, 430 Natl Business Pkwy, Annapolis, MD 20701 USA. [Zhang, Jun; Pattnaik, Radha K.; Merkle, Larry D.; Dubinskii, Mark; chen, Youming] US Army, Res Lab, 2800 Powder Mill Rd, Adelphi, MD 20783 USA. [Dajani, Iyad A.] US Air Force, Res Lab, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA. [Mart, Cody] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA. RP Baker, CC (reprint author), US Navy, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-62841-963-4 J9 PROC SPIE PY 2016 VL 9728 AR UNSP 97280T DI 10.1117/12.2217905 PG 9 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Optics SC Engineering; Materials Science; Optics GA BG7JR UT WOS:000391388500026 ER PT J AU Tyagi, A Squicciarini, A Rajtmajer, S Griffin, C AF Tyagi, Alpana Squicciarini, Anna Rajtmajer, Sarah Griffin, Christopher GP IEEE TI An in-depth study of peer influence on collective decision making for multi-party access control SO PROCEEDINGS OF 2016 IEEE 17TH INTERNATIONAL CONFERENCE ON INFORMATION REUSE AND INTEGRATION (IEEE IRI) LA English DT Proceedings Paper CT 17th IEEE International Conference on Information Reuse and Integration CY JUL 28-30, 2016 CL Pittsburgh, PA SP IEEE, IEEE Comp Soc, Univ Pittsburgh, Sch Informat Sci, IBM, Almaden Inst DE access control; privacy; social networks ID ONLINE SOCIAL NETWORKS; INFORMATION PRIVACY; SELF-DISCLOSURE; COOPERATION; MODEL AB In this paper, we discuss the results of a 159-participant human-subject study on peer influence in multiparty access control decisions in social network sites. Our two-part research study considers users privacy attitudes and behaviors when choosing a privacy policy for joint content, in the context of both synchronous and asynchronous sharing. C1 [Tyagi, Alpana; Squicciarini, Anna] Penn State Univ, Coll Informat Sci & Technol, University Pk, PA 16802 USA. [Rajtmajer, Sarah] Penn State Univ, Dept Math, University Pk, PA 16802 USA. [Griffin, Christopher] US Naval Acad, Dept Math, Ann Harbour, MI USA. RP Tyagi, A (reprint author), Penn State Univ, Coll Informat Sci & Technol, University Pk, PA 16802 USA. EM axt44@psu.edu; acs20@psu.edu; smr48@psu.edu; griffinch@ieee.org NR 33 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-3207-5 PY 2016 BP 305 EP 314 DI 10.1109/IRI.2016.48 PG 10 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG7KA UT WOS:000391397100039 ER PT S AU Gignilliat, R Tepfer, K Wilson, RF Taczak, TM AF Gignilliat, Robert Tepfer, Kathleen Wilson, Rebekah F. Taczak, Thomas M. BE Titterton, DH Grasso, RJ Richardson, MA TI Updates on measurement and modeling techniques for expendable countermeasures SO TECHNOLOGIES FOR OPTICAL COUNTERMEASURES XIII SE Proceedings of SPIE LA English DT Proceedings Paper CT 13th Conference on Technologies for Optical Countermeasures CY SEP 27-28, 2016 CL Edinburgh, SCOTLAND SP SPIE DE Anti-Ship-Missile Off-board Countermeasures; Radiometric Measurement Techniques; Decoy Models AB The potential threat of recently-advertised anti-ship missiles has instigated research at the United States (US) Naval Research Laboratory (NRL) into the improvement of measurement techniques for visual band countermeasures. The goal of measurements is the collection of radiometric imagery for use in the building and validation of digital models of expendable countermeasures. This paper will present an overview of measurement requirements unique to the visual band and differences between visual band and infrared (IR) band measurements. A review of the metrics used to characterize signatures in the visible band will be presented and contrasted to those commonly used in IR band measurements. For example, the visual band measurements require higher fidelity characterization of the background, including improved high-transmittance measurements and better characterization of solar conditions to correlate results more closely with changes in the environment. The range of relevant engagement angles has also been expanded to include higher altitude measurements of targets and countermeasures. In addition to the discussion of measurement techniques, a top-level qualitative summary of modeling approaches will be presented. No quantitative results or data will be presented. C1 [Gignilliat, Robert; Tepfer, Kathleen] US Naval Res Lab, 4555 Overlook Ave,SW, Washington, DC 20375 USA. [Wilson, Rebekah F.; Taczak, Thomas M.] Appl Technol Inc, 5200 Potomac Dr, King George, VA 22485 USA. RP Wilson, RF (reprint author), Appl Technol Inc, 5200 Potomac Dr, King George, VA 22485 USA. EM rebekah.wilson.ctr@nrl.navy.mil NR 4 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0382-0; 978-1-5106-0383-7 J9 PROC SPIE PY 2016 VL 9989 AR 99890P DI 10.1117/12.2245174 PG 13 WC Optics SC Optics GA BG7HI UT WOS:000391294400016 ER PT J AU Angus, JR Swanekamp, SB Schumer, JW Mosher, D Ottinger, PF AF Angus, J. R. Swanekamp, S. B. Schumer, J. W. Mosher, D. Ottinger, P. F. GP IEEE TI Modeling nitrogen plasmas produced by intense electron beams SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Angus, J. R.; Swanekamp, S. B.; Schumer, J. W.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Mosher, D.; Ottinger, P. F.] NRL Engility Inc, Alexandria, VA 22314 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 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600158 ER PT J AU Apruzese, JP Giuliani, JL Ouart, ND Tangri, V Harvey-Thompson, AJ Jones, B Jennings, CA AF Apruzese, J. P. Giuliani, J. L. Ouart, N. D. Tangri, V. Harvey-Thompson, A. J. Jones, B. Jennings, C. A. GP IEEE TI EFFECTS OF A Xe DOPANT ON AN Ar GAS-PUFF IMPLOSION ON Z SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Apruzese, J. P.; Giuliani, J. L.; Ouart, N. D.; Tangri, V.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Harvey-Thompson, A. J.; Jones, B.; Jennings, C. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Apruzese, J. P.] NRL Engil Corp, Chantilly, VA 20151 USA. [Tangri, V.] Berkeley Res Associates Inc, Beltsville, MD 20705 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600168 ER PT J AU Chernyayskiy, IA Rodgers, JC Vlasov, AN Levush, B Antonsen, TM AF Chernyayskiy, Igor A. Rodgers, John C. Vlasov, Alexander N. Levush, Baruch Antonsen, Thomas M., Jr. GP IEEE TI ADVANCED LARGE SIGNAL MODELING OF VACUUM ELECTRONIC DEVICES BASED ON IMPEDANCE CHARACTERIZATION OF SLOW-WAVE STRUCTURES SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Chernyayskiy, Igor A.; Rodgers, John C.; Vlasov, Alexander N.; Levush, Baruch] Naval Res Lab, Washington, DC 20375 USA. [Antonsen, Thomas M., Jr.] Leidos Inc, Reston, VA 20190 USA. RI Antonsen, Thomas/D-8791-2017 OI Antonsen, Thomas/0000-0002-2362-2430 NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600330 ER PT J AU Commisso, RJ Angus, JR Hinshelwood, DD Jackson, SL Mosher, D Ottinger, PF Richardson, AS Schumer, JW Weber, BV Barnes, NR Neal, JS Sinclair, M AF Commisso, R. J. Angus, J. R. Hinshelwood, D. D. Jackson, S. L. Mosher, D. Ottinger, P. F. Richardson, A. S. Schumer, J. W. Weber, B. V. Barnes, N. R. Neal, J. S. Sinclair, M. GP IEEE TI PULSED, INTENSE ELECTRON BEAMS FOR MATERIAL RESPONSE STUDIES WITHOUT THE USE OF EXTERNAL MAGNETIC FIELDS SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE ID SOLIDS C1 [Commisso, R. J.; Angus, J. R.; Hinshelwood, D. D.; Jackson, S. L.; Mosher, D.; Ottinger, P. F.; Richardson, A. S.; Schumer, J. W.; Weber, B. V.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Barnes, N. R.; Neal, J. S.; Sinclair, M.] Atom Weap Estab, Aldermaston, England. [Mosher, D.; Ottinger, P. F.] NRL Engility Inc, Alexandria, VA USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600320 ER PT J AU Cooke, SJ Stantchev, GM Antonsen, TM AF Cooke, Simon J. Stantchev, George M. Antonsen, Thomas M., Jr. GP IEEE TI Accurate, Time-Domain, Electromagnetic Simulation of Embedded Dielectric Interfaces in Neptune SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Cooke, Simon J.; Stantchev, George M.] Naval Res Lab, Washington, DC USA. [Antonsen, Thomas M., Jr.] Leidos Inc, Billerica, MA USA. RI Antonsen, Thomas/D-8791-2017 OI Antonsen, Thomas/0000-0002-2362-2430 NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600329 ER PT J AU Dasgupta, A Giuliani, J Ouart, N Clark, RW Apruzese, JP Ampleford, DJ Hansen, SB AF Dasgupta, A. Giuliani, J. Ouart, N. Clark, R. W. Apruzese, J. P. Ampleford, D. J. Hansen, S. B. GP IEEE TI 1-D NON-LTE K-AND L-SHELL SPECTROSCOPIC SIMULATION OF KR GAS PUFF ON Z SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Dasgupta, A.; Giuliani, J.; Ouart, N.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Clark, R. W.] Berkeley Res Associates Inc, Beltsville, MD 20705 USA. [Apruzese, J. P.] NRL Engility Corp, Chantilly, VA 20151 USA. [Ampleford, D. J.; Hansen, S. B.] Sandia Natl Labs, Albuquerque, NM 87185 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 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600269 ER PT J AU Giuliani, JL Velikovich, AL Zalesak, ST AF Giuliani, J. L. Velikovich, A. L. Zalesak, S. T. GP IEEE TI MAGNETIC FLUX AND HEAT LOSS BY DIFFUSIVE, ADVECTIVE, AND THERMOELECTRIC EFFECTS SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Giuliani, J. L.; Velikovich, A. L.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Zalesak, S. T.] Berkeley Res Associates Inc, Beltsville, MD 20905 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600177 ER PT J AU Jones, TG Kaganovich, D Helle, MH Fischer, R Ting, A Palastro, J Johnson, L Hafizi, B Gordon, D Penano, J Chen, YH AF Jones, T. G. Kaganovich, D. Helle, M. H. Fischer, R. Ting, A. Palastro, J. Johnson, L. Hafizi, B. Gordon, D. Penano, J. Chen, Y. -H. GP IEEE TI Intense Underwater Laser Propagation, Ionization and Heating for Remote Shaped Plasma Generation SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Jones, T. G.; Kaganovich, D.; Helle, M. H.; Fischer, R.; Ting, A.; Palastro, J.; Johnson, L.; Hafizi, B.; Gordon, D.; Penano, J.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Chen, Y. -H.] Res Support Instruments Inc, Lanham, MD 20706 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600377 ER PT J AU Ouart, ND Giuliani, JL Dasgupta, A Velikovich, AL Engelbrecht, J de Grouchy, P Qi, N Shelkovenko, T Pikuz, S Kusse, B Hammer, D Apruzese, JP Clark, RW AF Ouart, N. D. Giuliani, J. L. Dasgupta, A. Velikovich, A. L. Engelbrecht, J. de Grouchy, P. Qi, N. Shelkovenko, T. Pikuz, S. Kusse, B. Hammer, D. Apruzese, J. P. Clark, R. W. GP IEEE TI X-RAY RADIATION FROM PUFF-ON-WIRE IMPLOSIONS ON THE COBRA GENERATOR SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE ID PINCH C1 [Ouart, N. D.; Giuliani, J. L.; Dasgupta, A.; Velikovich, A. L.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Engelbrecht, J.; de Grouchy, P.; Qi, N.; Shelkovenko, T.; Pikuz, S.; Kusse, B.; Hammer, D.] Cornell Univ, Ithaca, NY 14853 USA. [Apruzese, J. P.] Engility Corp, Chantilly, VA USA. [Clark, R. W.] Berkeley Res Associates Inc, Beltsville, MD USA. RI Shelkovenko, Tatiana/M-8254-2015; Pikuz, Sergey/M-8231-2015 NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600064 ER PT J AU Penano, J Helle, MH Rock, B Gordon, DF Palastro, JP Ting, A AF Penano, J. Helle, M. H. Rock, B. Gordon, D. F. Palastro, J. P. Ting, A. GP IEEE TI MICROWAVE INTERACTIONS WITH LASER-GENERATED AIR PLASMA FILAMENTS AND ACOUSTIC SHOCKS SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Penano, J.; Helle, M. H.; Rock, B.; Gordon, D. F.; Palastro, J. P.; Ting, A.] US 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 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600408 ER PT J AU Petillo, J Ovtchinnikov, S Kostas, C Panagos, D Burke, A Nelson, E Stantchev, G Cooke, S Held, B Nichols, A Ayala, S AF Petillo, John Ovtchinnikov, Serguei Kostas, Chris Panagos, Dimitrios Burke, Alex Nelson, Eric Stantchev, George Cooke, Simon Held, Ben Nichols, Alan Ayala, Sreeram GP IEEE TI DEVELOPMENTS IN PARALLELIZATION AND THE USER ENVIRONMENT OF THE MICHELLE CHARGED PARTICLE BEAM OPTICS CODE SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE ID ELECTRON-GUN C1 [Petillo, John; Ovtchinnikov, Serguei; Kostas, Chris; Panagos, Dimitrios; Burke, Alex; Nelson, Eric] Leidos, Billerica, MA 01820 USA. [Stantchev, George; Cooke, Simon] US Naval Res Lab, Washington, DC 20375 USA. [Held, Ben; Nichols, Alan; Ayala, Sreeram] AWR Grp Natl Instruments, Mequon, WI 53092 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600327 ER PT J AU Petrova, TB Wolford, MF Petrov, GM Giuliani, JL Hegeler, F Myers, MC Sethian, JD Fisher, BT Ladouceur, HD AF Petrova, Tz. B. Wolford, M. F. Petrov, G. M. Giuliani, J. L. Hegeler, F. Myers, M. C. Sethian, J. D. Fisher, B. T. Ladouceur, H. D. GP IEEE TI NON-LTE TIME-DEPENDENT PLASMA CHEMISTRY MODEL OF E-BEAM NOX REMEDIATION FROM SURROGATE FLUE GAS MIXTURES SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Petrova, Tz. B.; Wolford, M. F.; Petrov, G. M.; Giuliani, J. L.; Hegeler, F.; Myers, M. C.; Sethian, J. D.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Fisher, B. T.; Ladouceur, H. D.] Naval Res Lab, Div Chem, Washington, DC 20375 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600290 ER PT J AU Richardson, AS Angus, JR Swanekamp, SB Schumer, JW Ottinger, PF AF Richardson, A. S. Angus, J. R. Swanekamp, S. B. Schumer, J. W. Ottinger, P. F. GP IEEE TI 2D Simulations of Hall-Driven Magnetic Field Penetration in Electron-Magnetohydrodynamics SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Richardson, A. S.; Angus, J. R.; Swanekamp, S. B.; Schumer, J. W.] Naval Res Lab, Washington, DC 20375 USA. [Ottinger, P. F.] Engility Corp, Chantilly, VA 20151 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600407 ER PT J AU Rittersdorf, IM Ottinger, PF Allen, RJ Schumer, JW AF Rittersdorf, Ian M. Ottinger, Paul F. Allen, Raymond J. Schumer, Joseph W. GP IEEE TI CURRENT DENSITY SCALING EXPRESSIONS FOR A BIPOLAR SPACE-CHARGE-LIMITED CYLINDRICAL DIODE SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Rittersdorf, Ian M.; Ottinger, Paul F.; Allen, Raymond J.; Schumer, Joseph W.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Ottinger, Paul F.] Engility Corp, Alexandria, VA 22314 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600322 ER PT J AU Schmitt-Sody, A Elle, JA Domonkos, MT Luccro, A Ting, AC Hasson, V AF Schmitt-Sody, Andreas Elle, Jennifer A. Domonkos, Matthew T. Luccro, Adrian Ting, Antonio C. Hasson, Victor GP IEEE TI Laser plasmas from picosecond laser filamentation in the atmosphere and its application on guided high voltage discharges SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Schmitt-Sody, Andreas; Elle, Jennifer A.; Domonkos, Matthew T.] Air Force Res Lab, Albuquerque, NM 87117 USA. [Luccro, Adrian] Boeing DES, Albuquerque, NM 87117 USA. [Ting, Antonio C.] Naval Res Lab, Washington, DC 20375 USA. [Hasson, Victor] Univ Arizona, Tucson, AZ 85721 USA. NR 4 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600163 ER PT J AU Schultz, KA Kantsyrev, VL Shlyaptseva, VV Shrestha, IK Petkov, EE Safronova, AS Moschella, JJ Stafford, A Cooper, MC Petrov, GM AF Schultz, K. A. Kantsyrev, V. L. Shlyaptseva, V. V. Shrestha, I. K. Petkov, E. E. Safronova, A. S. Moschella, J. J. Stafford, A. Cooper, M. C. Petrov, G. M. GP IEEE TI CHARACTERIZATION AND STUDY OF SUPERSONIC PURE AND MIXED NOBLE GAS JETS AS A TARGET FOR A SUB-PS LASER SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Schultz, K. A.; Kantsyrev, V. L.; Shlyaptseva, V. V.; Shrestha, I. K.; Petkov, E. E.; Safronova, A. S.; Moschella, J. J.; Stafford, A.; Cooper, M. C.] Univ Nevada, Dept Phys, Reno, NV 89557 USA. [Petrov, G. M.] Naval Res Lab, 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 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600341 ER PT J AU Simpson, SC Johnston, MD Mazarakis, MG Renk, TJ Tang, R Webb, TJ Nielsen, DS Ziska, DR Kiefer, ML Patel, S Zier, JC Weber, BV AF Simpson, Sean C. Johnston, Mark D. Mazarakis, Michael G. Renk, Timothy J. Tang, Ricky Webb, Timothy J. Nielsen, Dan S. Ziska, Derek R. Kiefer, Mark L. Patel, Sonal Zier, Jacob C. Weber, Bruce V. GP IEEE TI In-Situ Anode Heating and Plasma Glow Discharge Cleaning and Its Effects on Atomic Constituents in the A-K Gap in Self-Magnetic Pinch (SMP) Experiments SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Simpson, Sean C.; Johnston, Mark D.; Mazarakis, Michael G.; Renk, Timothy J.; Tang, Ricky; Webb, Timothy J.; Nielsen, Dan S.; Ziska, Derek R.; Kiefer, Mark L.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Patel, Sonal] Univ Michigan, Ann Arbor, MI 48109 USA. [Zier, Jacob C.; Weber, Bruce V.] Naval Res Lab, 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 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600326 ER PT J AU Stamm, AB Shadwick, BA AF Stamm, Alexander B. Shadwick, Bradley A. GP IEEE TI Variational Formulation of Particle Algorithms for Kinetic E&M Plasma Simulations SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Stamm, Alexander B.] US Naval Res Lab, Washington, DC 20375 USA. [Shadwick, Bradley A.] Univ Nebraska, Lincoln, NE 68588 USA. NR 4 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600363 ER PT J AU Stantchev, GM Cooke, SJ Petillo, JJ Ovtchinnikov, S Burke, A Kostas, C Panagos, D Antonsen, TM AF Stantchev, George M. Cooke, Simon J. Petillo, John J. Ovtchinnikov, Serguei Burke, Alex Kostas, Chris Panagos, Dimitrios Antonsen, Thomas M., Jr. GP IEEE TI A HIGH-PERFORMANCE DISTRIBUTED COMPUTING FRAMEWORK FOR PARAMETRIC DESIGN OPTIMIZATION OF RF DEVICES SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Stantchev, George M.; Cooke, Simon J.] Naval Res Lab, Washington, DC 20375 USA. [Petillo, John J.; Ovtchinnikov, Serguei; Burke, Alex; Kostas, Chris; Panagos, Dimitrios; Antonsen, Thomas M., Jr.] Leidos Inc, Billerica, MA 01821 USA. RI Antonsen, Thomas/D-8791-2017 OI Antonsen, Thomas/0000-0002-2362-2430 NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600328 ER PT J AU Tan, X Griggs, N Rumbach, P Go, DB Jensen, KL AF Tan, Xi Griggs, Nathaniel Rumbach, Paul Go, David B. Jensen, Kevin L. GP IEEE TI Theoretical analysis of resonant effect in ion-enhanced field emission on microplasma cathode surface SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Tan, Xi; Griggs, Nathaniel; Rumbach, Paul; Go, David B.] Univ Notre Dame, Notre Dame, IN 46556 USA. [Jensen, Kevin L.] Naval Res Lab, MSTD, 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 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600119 ER PT J AU Viasov, AN Chernyavskiy, IA Rodgers, JC Cooke, SJ Pasour, J Antonsen, TM Chernin, D AF Viasov, Alexander N. Chernyavskiy, Igor A. Rodgers, John C. Cooke, Simon J. Pasour, John Antonsen, Thomas M., Jr. Chernin, David GP IEEE TI DEVELOPMENT OF LARGE SIGNAL CODES FOR MODELING OF MULTIPLE BEAM FOLDED WAVEGUIDE TWTS SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Viasov, Alexander N.; Chernyavskiy, Igor A.; Rodgers, John C.; Cooke, Simon J.; Pasour, John] Naval Res Lab, Washington, DC 20375 USA. [Antonsen, Thomas M., Jr.; Chernin, David] Leidos Inc, Reston, VA 20191 USA. RI Antonsen, Thomas/D-8791-2017 OI Antonsen, Thomas/0000-0002-2362-2430 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 BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600331 ER PT J AU Weber, BV Commisso, RI Jackson, SL Mosher, D AF Weber, B. V. Commisso, R. I. Jackson, S. L. Mosher, D. GP IEEE TI 10 keV to 100 keV NON-THERMAL RADIATION FROM HIGH-Z EXPLODING WIRES SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Weber, B. V.; Commisso, R. I.; Jackson, S. L.; Mosher, D.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600232 ER PT J AU Zier, JC Weber, BV Boyer, C Cooperstein, G Hinshelwood, DD Richardson, AS Rittersdorf, IM Schumer, JW Swanekamp, SB AF Zier, J. C. Weber, B. V. Boyer, C. Cooperstein, G. Hinshelwood, D. D. Richardson, A. S. Rittersdorf, I. M. Schumer, J. W. Swanekamp, S. B. GP IEEE TI EFFECTS OF PULSED ANODE HEATING ON SELF-MAGNETIC-PINCH RADIOGRAPHIC PERFORMANCE USING NRL'S MERCURY IVA SO 2016 43RD IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCE (ICOPS) LA English DT Meeting Abstract CT 43rd IEEE International Conference on Plasma Science (ICOPS) CY JUN 19-23, 2016 CL Banff, CANADA SP IEEE Nucl & Plasma Sci Soc, Plasma Sci & Applicat Comm, IEEE C1 [Zier, J. C.; Weber, B. V.; Boyer, C.; Cooperstein, G.; Hinshelwood, D. D.; Richardson, A. S.; Rittersdorf, I. M.; Schumer, J. W.; Swanekamp, S. B.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Boyer, C.; Cooperstein, G.] Engility Corp, Chantilly, VA 20151 USA. [Rittersdorf, I. M.] CNR, Naval Res Lab, Ottawa, ON, Canada. NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9601-1 PY 2016 PG 1 WC Engineering, Multidisciplinary; Physics, Fluids & Plasmas SC Engineering; Physics GA BG6ZR UT WOS:000391073600325 ER PT S AU Cotae, P Kang, M Velazquez, A AF Cotae, Paul Kang, Myong Velazquez, Alexander GP IEEE TI Spectral Analysis of Low Rate of Denial of Service Attacks Detection based on Fisher and Siegel Tests SO 2016 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 MAY 22-27, 2016 CL Kuala Lumpur, MALAYSIA SP IEEE DE g-statistic; p-value; Fisher test; Siegel test; confidence interval; significance test; periodic content; low rate DoS attack detection; Shrew attack ID HARMONIC-ANALYSIS; PERIODICITY AB We focus on the detection of Low Rate Denial of Service Attacks (LR DoS) based on their spectral properties. We revised the Fisher g-statistic test and Siegel test for detection of LR DoS attacks such as Shrew and New Shrew attacks. Our results reveal that these attacks can be effectively identified by using Fisher g-statistic test for one dominant periodicity as in the case of Shrew attacks. When multiple (compound) dominant periodicities exist in the case of New Shrew attacks, Siegel test can identify the attack better than Fisher g-statistic test. Our contribution consists in developing a new methodology for rejecting the null hypothesis or identifying LR DoS attacks. Numerical examples for a confidence interval at significance level of alpha = 0.01 and alpha = 0.05 are given for Shrew and New Shrew attacks. C1 [Cotae, Paul] Univ Dist Columbia, Sch Engn & Appl Sci, Dept Elect & Comp Engn, Washington, DC 20008 USA. [Kang, Myong; Velazquez, Alexander] Naval Res Lab, Ctr High Assurance Comp Syst, Code 5540, Washington, DC 20375 USA. RP Cotae, P (reprint author), Univ Dist Columbia, Sch Engn & Appl Sci, Dept Elect & Comp Engn, Washington, DC 20008 USA. EM pcotac@ude.edu; myong.kang@nrl.navy.mil; alexander.velazquez@nrl.navy.mil NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1550-3607 BN 978-1-4799-6664-6 J9 IEEE ICC PY 2016 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG6YK UT WOS:000390993201080 ER PT J AU Kam, C Kompella, S Nguyen, GD Wieselthier, JE Ephremides, A AF Kam, Clement Kompella, Sastry Nguyen, Gam D. Wieselthier, Jeffrey E. Ephremides, Anthony GP IEEE TI Age of Information with a Packet Deadline SO 2016 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY SE IEEE International Symposium on Information Theory LA English DT Proceedings Paper CT IEEE International Symposium on Information Theory (ISIT) CY JUL 10-15, 2016 CL Barcelona, SPAIN SP IEEE, IEEE Informat Theory Soc, Univ Pompeu Fabra Barcelona, NSF, Qualcomm, Huawei, Google, IEEE BigData, Gobierno Espana, Minist Economia Compititividad AB We study the age of information, which is a recently introduced metric for measuring the freshness of a continually updated piece of information as observed at a remote monitor. The age of information metric has been studied for a variety of different queuing systems. In this work, we introduce a packet deadline as a control mechanism and study its impact on the average age of information for an M/M/1/2 queuing system. We analyze the system for a fixed deadline and derive a mathematical expression for the average age. We numerically evaluate the expression and show the relationship of the age performance to that of the M/M/1/1 and M/M/1/2 systems. We show that the system with a deadline constraint can outperform both the M/M/1/1 and M/ M1l/ 2 without such a deadline. C1 [Kam, Clement; Kompella, Sastry; Nguyen, Gam D.] Naval Res Lab, Div Informat Technol, Washington, DC 20375 USA. [Wieselthier, Jeffrey E.] Wieselthier Res, Silver Spring, MD USA. [Ephremides, Anthony] Univ Maryland, Elect & Comp Engn Dept, College Pk, MD 20742 USA. RP Kam, C (reprint author), Naval Res Lab, Div Informat Technol, Washington, DC 20375 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 BN 978-1-5090-1806-2 J9 IEEE INT SYMP INFO PY 2016 BP 2564 EP 2568 PG 5 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG6DW UT WOS:000390098702126 ER PT S AU Ai, ZM Livingston, MA Moskowitz, IS AF Ai, Zhuming Livingston, Mark A. Moskowitz, Ira S. GP IEEE TI Real-time Unmanned Aerial Vehicle 3D Environment Exploration in a Mixed Reality Environment SO 2016 INTERNATIONAL CONFERENCE ON UNMANNED AIRCRAFT SYSTEMS (ICUAS) SE International Conference on Unmanned Aircraft Systems LA English DT Proceedings Paper CT International Conference on Unmanned Aircraft Systems (ICUAS) CY JUN 07-10, 2016 CL Arlington, VA SP IEEE, IEEE Robot & Automat Soc, IEEE CSS, MCA ID POINT CLOUDS; VISUALIZATION; NAVIGATION; OCTREE AB This paper presents a novel human robot interaction system that can be used for real-time 3D environment exploration with an unmanned aerial vehicle (UAV). The method creates a mixed reality environment, in which a user can interactively control a UAV and visualize the exploration data in real-time. The method uses a combination of affordable sensors, and transforms the control and viewing space from the UAV to the controller's perspective. Different hardware and software configurations are studied so that the system can be adjusted to meet different needs and environments. A prototype system is presented and test results are discussed. C1 [Ai, Zhuming; Livingston, Mark A.; Moskowitz, Ira S.] Naval Res Lab, Informat Management & Decis Architectures, 4555 Overlook Ave, Washington, DC 20375 USA. RP Moskowitz, IS (reprint author), Naval Res Lab, Informat Management & Decis Architectures, 4555 Overlook Ave, Washington, DC 20375 USA. EM zhuming.ai@nrl.navy.mil; mark.livingston@nrl.navv.mil; ira.moskowitz@nrl.navy.mil NR 39 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2373-6720 BN 978-1-4673-9333-1 J9 INT CONF UNMAN AIRCR PY 2016 BP 664 EP 670 PG 7 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BG6WU UT WOS:000390883100081 ER PT J AU Wang, Q Wendt, RT Cherrett, RC Wang, SP Rogers, T Yardim, C AF Wang, Qing Wendt, Robert Travis Cherrett, Robin Corey Wang, Shouping Rogers, Ted Yardim, Caglar GP IEEE TI Variability of Index of Refraction from Large Eddy Simulations SO 2016 USNC-URSI RADIO SCIENCE MEETING (JOINT WITH AP-S SYMPOSIUM) LA English DT Proceedings Paper CT IEEE International Symposium on Antennas and Propagation / USNC-URSI Radio Science Meeting CY JUN 26-JUL 01, 2016 CL IEEE Reg 9, Fajardo, PR SP USNC, URSI, Inst Elect & Elect Engineers, IEEE Antennas & Propagat Soc HO IEEE Reg 9 DE Large eddy simulation; atmospheric effects; EM ducting AB Large Eddy Simulation (LES) is able to resolve the variability of the elevated trapping layer on top of the atmospheric boundary layer and hence can be used as a tool to study the uncertainties of using refractive profiles from a mesoscale model that is normally volume averaged within the mesoscale model grid. The variability within a stratocumulustopped boundary layer is quantified here using LES simulated thermodynamic fields. Comparisons are also made between the LES field and aircraft measurements. C1 [Wang, Qing; Wendt, Robert Travis] US Navy, Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA. [Cherrett, Robin Corey] US Navy, Meteorol & Oceanog, Washington, DC USA. [Wang, Shouping] Naval Res Lab, Marine Meteorol Div, Monterey, CA USA. [Rogers, Ted] SPAWAR Syst Ctr Pacific, San Diego, CA USA. [Yardim, Caglar] Ohio State Univ, ElectSci Lab, 1330 Kinnear Rd, Columbus, OH 43210 USA. RP Wang, Q (reprint author), US Navy, Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA. EM qwang@nps.edu; rdwendt@nps.edu; robin.cherrett@navy.mil; Shouping.Wang@nrlmry.navy.mil; trogers@spawar.navy.mil; yardim.7@osu.edu NR 4 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-2852-8 PY 2016 BP 109 EP 110 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG6YL UT WOS:000390996200054 ER PT J AU Wang, Q Burkholder, RJ Yardim, C Pozderac, J Christman, A Fernando, HJS Wang, Q Creegan, ED AF Wang, Qi Burkholder, R. J. Yardim, C. Pozderac, J. Christman, A. Fernando, H. J. S. Wang, Qing Creegan, E. D. GP IEEE TI Evaporation Duct Refractivity Inversion from EM Propagation Measurements and NAVSLaM Predictions SO 2016 USNC-URSI RADIO SCIENCE MEETING (JOINT WITH AP-S SYMPOSIUM) LA English DT Proceedings Paper CT IEEE International Symposium on Antennas and Propagation / USNC-URSI Radio Science Meeting CY JUN 26-JUL 01, 2016 CL IEEE Reg 9, Fajardo, PR SP USNC, URSI, Inst Elect & Elect Engineers, IEEE Antennas & Propagat Soc HO IEEE Reg 9 DE EM propagation; evaporation duct; marine atmospheric boundary layer; refractivity; parabolic wave equation AB An important application of air-sea interaction research is in characterizing marine atmospheric boundary layer (MABL) properties, ducting in particular, in order to predict radar and radio communication conditions in the marine environment. This ongoing research project, conducted off the coast of Duck, NC, during October-November of 2015, provided an opportunity to measure EM propagation during the CASPER at-sea experimental campaigns. The measured signal is used to invert for the evaporation duct refractivity profile based on Terrain Parabolic Equation Model (TPEM) and compared to the profile predicted from NAVSLaM using concurrent meteorological and oceanographic measurements as input. C1 [Wang, Qi; Burkholder, R. J.; Yardim, C.; Pozderac, J.] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA. [Christman, A.; Fernando, H. J. S.] Univ Notre Dame, Civil & Environm Engn & Earth Sci, Notre Dame, IN 46556 USA. [Wang, Qing] US Navy, Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA. [Creegan, E. D.] US Army, Res Lab, White Sands Missile Range, NM USA. RP Wang, Q (reprint author), Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA. EM wang.3726@osu.edu; burkholder.1@osu.edu; yardim.7@osu.edu; pozderac.11@osu.edu; hfernand@nd.edu; adam.christman.10@nd.edu; qwang@nps.edu; edward.d.creegan.civ@mail.mil NR 4 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-2852-8 PY 2016 BP 117 EP 118 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG6YL UT WOS:000390996200058 ER PT J AU Whitener, KE AF Whitener, Keith E., Jr. TI Rapid synthesis of thin amorphous carbon films by sugar dehydration and dispersion SO AIMS MATERIALS SCIENCE LA English DT Article DE thin carbon films; acid dehydration; high-temperature annealing; X-ray photoelectron spectroscopy; Raman spectroscopy; atomic force microscopy ID GRAPHENE; XPS; NANOFIBERS; POLYMERS; GROWTH AB We have prepared amorphous carbon films with variable thicknesses down to <5 nm using a simple procedure which takes minutes and employs no special equipment. We prepare a carbonaceous suspension by the dehydration reaction of sulfuric acid with glucose and show that adding this mixture dropwise into water creates a thin carbon film on the water's surface which can be transferred to an arbitrary substrate. This transparent brown film is non-conductive and has a chemical makeup, excluding hydrogen, of CS0.0213O0.4563. After brief annealing under 10% H-2 in argon at 800 degrees C, the film has a high optical contrast and increased conductivity, with a chemical makeup of CO0.0828, suggesting that the material has at least short-range graphitic order. We repeat the experiment with chitosan replacing glucose and show using Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) that it is likely that nitrogen incorporates into the graphitic lattice. C1 [Whitener, Keith E., Jr.] US Naval Res Lab, Div Chem, Washington, DC 20375 USA. RP Whitener, KE (reprint author), US Naval Res Lab, Div Chem, Washington, DC 20375 USA. EM keith.whitener@nrl.navy.mil FU National Research Council FX K.E.W. acknowledges a fellowship from the National Research Council for this work. NR 34 TC 0 Z9 0 U1 0 U2 0 PU AMER INST MATHEMATICAL SCIENCES-AIMS PI SPRINGFIELD PA PO BOX 2604, SPRINGFIELD, MO 65801-2604 USA SN 2372-0468 EI 2372-0484 J9 AIMS MATER SCI JI AIMS Mater. Sci. PY 2016 VL 3 IS 4 BP 1309 EP 1320 DI 10.3934/matersci.2016.4.1309 PG 12 WC Materials Science, Multidisciplinary SC Materials Science GA EG2PA UT WOS:000390884600002 ER PT J AU Frye, ML Esther, CR Loughlin, C Vanscoy, L AF Frye, M. L. Esther, C. R. Loughlin, C. Vanscoy, L. TI Race, BMI, And Asthma Control In An Equal Access To Care Population SO AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE LA English DT Meeting Abstract CT International Conference of the American-Thoracic-Society (ATS) CY MAY 13-18, 2016 CL San Francisco, CA SP Amer Thorac Soc C1 [Frye, M. L.; Esther, C. R.; Loughlin, C.] Univ N Carolina, Chapel Hill, NC USA. [Vanscoy, L.] Naval Med Ctr Portsmouth, Portsmouth, VA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER THORACIC SOC PI NEW YORK PA 25 BROADWAY, 18 FL, NEW YORK, NY 10004 USA SN 1073-449X EI 1535-4970 J9 AM J RESP CRIT CARE JI Am. J. Respir. Crit. Care Med. PY 2016 VL 193 MA A2155 PG 1 WC Critical Care Medicine; Respiratory System SC General & Internal Medicine; Respiratory System GA EG0VE UT WOS:000390749601295 ER PT J AU Zhao, Y Kendall, T Johnson, B AF Zhao, Ying Kendall, Tony Johnson, Bonnie BE Fred, A Dietz, J Aveiro, D Liu, K Bernardino, J Filipe, J TI Big Data and Deep Analytics Applied to the Common Tactical Air Picture (CTAP) and Combat Identification (CID) SO KDIR: PROCEEDINGS OF THE 8TH INTERNATIONAL JOINT CONFERENCE ON KNOWLEDGE DISCOVERY, KNOWLEDGE ENGINEERING AND KNOWLEDGE MANAGEMENT - VOL. 1 LA English DT Proceedings Paper CT 8th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management (KDIR) CY NOV 09-11, 2016 CL Porto, PORTUGAL DE Big Data; Deep Analytics; Common Tactical Air Picture; Combat Identification; Machine Vision; Object Recognition; Pattern Recognition; Anomaly Detection; Lexical Link Analysis; Heterogeneous Data Sources; Unsupervised Learning AB Accurate combat identification (CID) enables warfighters to locate and identify critical airborne objects as friendly, hostile or neutral with high precision. The current CID processes include processing and analysing data from a vast network of sensors, platforms, and decision makers. CID plays an important role in generating the Common Tactical Air Picture (CTAP) which provides situational awareness to air warfare decision-makers. The Big "CID" Data and complexity of the problem pose challenges as well as opportunities. In this paper, we discuss CTAP and CID challenges and some Big Data and Deep Analytics solutions to address these challenges. We present a use case using a unique deep learning method, Lexical Link Analysis (LLA), which is able to associate heterogeneous data sources for object recognition and anomaly detection, both of which are critical for CTAP and CID applications. C1 [Zhao, Ying; Kendall, Tony; Johnson, Bonnie] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Zhao, Y (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA. NR 18 TC 0 Z9 0 U1 1 U2 1 PU SCITEPRESS PI SETUBAL PA AV D MANUELL, 27A 2 ESQ, SETUBAL, 2910-595, PORTUGAL BN 978-989-758-203-5 PY 2016 BP 443 EP 449 DI 10.5220/0006086904430449 PG 7 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems SC Computer Science GA BG7AH UT WOS:000391111000051 ER PT S AU Kim, W Shaw, B Bayya, S Askins, C Peele, J Rhonehouse, D Meyers, J Thapa, R Gibson, D Sanghera, J AF Kim, W. Shaw, B. Bayya, S. Askins, C. Peele, J. Rhonehouse, D. Meyers, J. Thapa, R. Gibson, D. Sanghera, J. BE Yin, S Guo, R TI Cladded single crystal fibers for high power fiber lasers SO PHOTONIC FIBER AND CRYSTAL DEVICES: ADVANCES IN MATERIALS AND INNOVATIONS IN DEVICE APPLICATIONS X SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Photonic Fiber and Crystal Devices - Advances in Materials and Innovations in Device Applications X CY AUG 28-29, 2016 CL San Diego, CA SP SPIE DE Cladded single crystal fibers; laser heated pedestal growth; high power fiber lasers ID SILICA AB We report on the recent progress in the development of cladded single crystal fibers for high power single frequency lasers. Various rare earth doped single crystal YAG fibers with diameters down to 17 lam with length > 1 m have been successfully drawn using a state-of-the-art Laser Heated Pedestal Growth system. Single and double cladding on rare earth doped YAG fibers have been developed using glasses where optical and physical properties were precisely matched to doped YAG core single crystal fiber. The double clad Yb:YAG fiber structures have dimensions analogous to large mode area (LMA) silica fiber. We also report successful fabrications of all crystalline core/clad fibers where thermal and optical properties are superior over glass cladded YAG fibers. Various fabrication methods, optical characterization and gain measurements on these cladded YAG fibers are reported. C1 [Kim, W.; Shaw, B.; Bayya, S.; Askins, C.; Meyers, J.; Gibson, D.; Sanghera, J.] Naval Res Lab, Washington, DC 20375 USA. [Peele, J.; Thapa, R.] Sotera Def Solut, Herndon, VA 20171 USA. [Rhonehouse, D.] Univ Res Fdn, Greenbelt, MD 20770 USA. RP Kim, W (reprint author), Naval Res Lab, Washington, DC 20375 USA. NR 8 TC 0 Z9 0 U1 4 U2 4 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0307-3; 978-1-5106-0308-0 J9 PROC SPIE PY 2016 VL 9958 AR 99580O DI 10.1117/12.2239218 PG 8 WC Materials Science, Multidisciplinary; Optics SC Materials Science; Optics GA BG7DD UT WOS:000391226800013 ER PT J AU Thompson, RB Thulasiraman, P AF Thompson, Richard B. Thulasiraman, Preetha BE Pellegrini, A GkoulalasDivanis, A DiSanzo, P Avresky, DR TI Confidential and Authenticated Communications in a Large Fixed-Wing UAV Swarm SO 15TH IEEE INTERNATIONAL SYMPOSIUM ON NETWORK COMPUTING AND APPLICATIONS (IEEE NCA 2016) LA English DT Proceedings Paper CT 15th IEEE International Symposium on Network Computing and Applications (IEEE NCA) CY OCT 30-NOV 02, 2016 CL Cambridge, MA SP IEEE, IEEE Comp Soc Tech Comm Distributed Proc, Akamai Technologies Inc, Int Res Inst Autonom Network Comp, IEEE Comp Soc AB Large Unmanned Aerial Vehicle (UAV) swarms are a nascent technology promising useful military and civilian solutions to logistical problems. Securing data communications within the swarm is essential to accomplishing swarm objectives. The Naval Postgraduate School has successfully demonstrated the launch, flight and landing of 50 UAVs. The communications architecture to support a UAV swarm is unique. This paper details the practical challenges of creating a secure communications channel in the swarm. The Advanced Encryption Standard (AES) was chosen as one of the encryption algorithms for testing as it is authorized by the National Security Agency (NSA). Various modes of AES, including Galois/Counter Mode (GCM) and Counter with Cipher Block Chaining Message Authentication Code (CCM), were analyzed within the swarm architecture. The impact of these authenticated encryption algorithms on network capacity and processor performance is presented. In addition to AES, ChaCha20-Poly1305, another type of authenticated encryption scheme was studied. It was found to be the better solution for securing the swarm if classified data is not being handled or created. C1 [Thompson, Richard B.; Thulasiraman, Preetha] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93940 USA. RP Thompson, RB (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93940 USA. EM rbthomps@nps.edu; pthulas1@nps.edu NR 21 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-3216-7 PY 2016 BP 375 EP 382 PG 8 WC Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA BG6NZ UT WOS:000390674600062 ER PT S AU Warzoha, RJ Smith, AN Harris, M AF Warzoha, Ronald J. Smith, Andrew N. Harris, Maurice GP IEEE TI Improved Methodology for Calculating Interfacial Thermal Resistance and Uncertainty for Steady-State TIM Testers with Embedded Probes SO 2016 15TH IEEE INTERSOCIETY CONFERENCE ON THERMAL AND THERMOMECHANICAL PHENOMENA IN ELECTRONIC SYSTEMS (ITHERM) SE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems LA English DT Proceedings Paper CT 15th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm) CY MAY 31-JUN 03, 2016 CL Las Vegas, NV SP IEEE, IEEE Components Packaging & Mfg Technol Soc AB Efforts to miniaturize electronic components within the semiconductor industry continue to intensify stresses on the primary thermal pathways that are used for heat dissipation in electronics packaging equipment. This is particularly true for heat flow pathways that traverse interfaces. Consequently, an increasing priority for thermal engineers is to design materials that are capable of reducing the impedance to heat flow acrosss device junctions. However, the equipment most often used to measure the resistance to heat flow across interfaces (ASTM D5470) is becoming increasingly insufficient for the characterization of next-generation thermal interface materials (TIMs), as evidenced by the wide variability in the reported results for current state-of-the-art TIMs. Through the use of statistical analyses, we show that one possible reason for these discrepancies is the method by which the temperature difference across the interface is calculated. Additionally, we find that there exists a lack of consideration for many potential sources of positional uncertainty that exist within the measurement system, including: 1) the thermal conductivity mismatch between the thermal probes, the heat meter bars and any interstitial filler material used to increase contact conductance between them, 2) drill drift during manufacturing, 3) the temperature and positional uncertainties of each probe along the length of the heat meter bars, 4) the tolerance associated with the location of each thermal probe's junction and 5) the number of thermal probes that are used to determine the temperature difference across the interface. We find that these factors result in an unavoidably large uncertainty in the position of the thermal probes, which produces a significant measurement uncertainty when R-T is on the order of 1.10(-5) m(2).K/W or lower, regardless of the temperature measurement accuracy that can be achieved with the probes. Using numerical simulations, we conduct a parametric study to determine the magnitude of these effects on positional uncertainty. Results suggest that the lowest positional uncertainty is achieved when the thermal probe is significantly less thermally conductive than its surrounding filler, and that drill drift and the uncertainty associated with the location of the actual thermal probe junction account for a significant increase in the overall uncertainty of the measurement. It is expected that these results will allow for the development of steady-state TIM characterization instruments with improved measurement resolutions and for greater consistency between the results of different groups that use thermal probe-based TIM testers. C1 [Warzoha, Ronald J.; Smith, Andrew N.; Harris, Maurice] US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA. RP Warzoha, RJ (reprint author), US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA. EM warzoha@usna.edu; ansmith@usna.edu NR 33 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1087-9870 BN 978-1-4673-8121-5 J9 INTERSOC C THERMAL T PY 2016 BP 1040 EP 1050 PG 11 WC Engineering, Electrical & Electronic; Engineering, Mechanical SC Engineering GA BG6KY UT WOS:000390436000143 ER PT S AU Lawson, W Sullivan, K Narber, C Bekele, E Hiatt, LM AF Lawson, Wallace Sullivan, Keith Narber, Cody Bekele, Esube Hiatt, Laura M. GP IEEE TI Touch Recognition and Learning from Demonstration (LfD) for Collaborative Human-Robot Firefighting Teams SO 2016 25TH IEEE INTERNATIONAL SYMPOSIUM ON ROBOT AND HUMAN INTERACTIVE COMMUNICATION (RO-MAN) SE IEEE RO-MAN LA English DT Proceedings Paper CT 25th IEEE International Symposium on Robot and Human Interactive Communication (IEEE RO-MAN) CY AUG 26-31, 2016 CL Columbia Univ, Teachers Coll, New York City, NY SP IEEE, IEEE Robot & Automat Soc, Robot Soc Japan, Korea Robot Soc, Culinart Grp, Springer, Disney Res, Kowa Amer Corp, PARO Robots HO Columbia Univ, Teachers Coll ID MOTION AB In Navy human firefighting teams, touch is used extensively to communicate among teammates. In noisy, chaotic, and visually challenging environments, such as among fires on Navy ships, this is the only reliable means of communication. The overarching goal of this work is to augment Navy firefighting teams with an autonomous robot serving as a nozzle operator; to accomplish this, the robot must understand the tactile gestures of its human teammates. Preliminary results recognizing touch gestures have indicated the potential of such an autonomous system to serve as a nozzle operator in human-centric firefighting scenarios. C1 [Lawson, Wallace; Sullivan, Keith; Narber, Cody; Bekele, Esube; Hiatt, Laura M.] US Navy, Res Lab, Ctr Appl Res Artificial Intelligence, Washington, DC 20375 USA. RP Lawson, W (reprint author), US Navy, Res Lab, Ctr Appl Res Artificial Intelligence, Washington, DC 20375 USA. NR 25 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1944-9445 BN 978-1-5090-3929-6 J9 IEEE ROMAN PY 2016 BP 994 EP 999 PG 6 WC Computer Science, Artificial Intelligence; Robotics SC Computer Science; Robotics GA BG6OD UT WOS:000390682500127 ER PT S AU Kiriakidis, K Severson, T Connett, B AF Kiriakidis, Kiriakos Severson, Tracie Connett, Brian BE Kounev, S Giese, H Liu, J TI Detecting and Isolating Attacks of Deception in Networked Control Systems SO 2016 IEEE INTERNATIONAL CONFERENCE ON AUTONOMIC COMPUTING (ICAC) SE Proceedings of the International Conference on Autonomic Computing LA English DT Proceedings Paper CT 13th IEEE International Conference on Autonomic Computing (ICAC) CY JUL 17-22, 2016 CL Wurzburg, GERMANY SP IEEE, IEEE Comp Soc, USENIX, SPEC Res Grp, VDE, ITG, Univ Wurzburg, SAP, HUAWEI, Hewlett Packard Enterprise, IBM, Microsoft, Google, IEEE Comp Soc Tech Comm Internet ID FAULT-DETECTION; CONSENSUS; TOPOLOGIES; STATE AB This paper investigates a category of cyber-attacks on control systems, which regulate processes of a single plant while sharing a communication network. The design of these attacks aims to deceive conventional fault detectors that test locally generated residuals for inconsistent statistics. The authors propose a network-wide attack detector and isolator that collects information from other neighborhoods subject to availability of locality and network resources. Their method relies on estimating the output of a process, whose regulator may be under attack, from measurements gathered at other processes connected to the one under examination through links existing at the physical layer. Next, a notional consensus network coalesces all of these estimates into information that is independent of possibly deceptive sensory data at the suspect locality. The thesis of this paper is that residuals generated from far-flung estimates will reveal an anomaly (even if the statistics of local residuals are consistent). A necessary condition is the existence of an observable subsystem within the physical network of interconnected processes. The authors employ graph theory techniques to identify the subsystem and optimize its observability. C1 [Kiriakidis, Kiriakos; Severson, Tracie; Connett, Brian] US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA. RP Kiriakidis, K (reprint author), US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA. EM kiriakid@usna.edu; severson@usna.edu; connett@usna.edu NR 24 TC 0 Z9 0 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA SN 2474-0756 BN 978-1-5090-1653-2 J9 PR INT CONF AUTONOM PY 2016 BP 269 EP 274 DI 10.1109/ICAC.2016.14 PG 6 WC Computer Science, Theory & Methods SC Computer Science GA BG6OC UT WOS:000390681200044 ER PT S AU Kirchner, MR AF Kirchner, Matthew R. GP IEEE TI AUTOMATIC THRESHOLDING OF SIFT DESCRIPTORS SO 2016 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP) SE IEEE International Conference on Image Processing ICIP LA English DT Proceedings Paper CT 23rd IEEE International Conference on Image Processing (ICIP) CY SEP 25-28, 2016 CL Phoenix, AZ SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers, Signal Proc Soc DE SIFT; Clamping; A contrario method; Helmholtz principal; Gestalt theory ID SCALE-INVARIANT KEYPOINTS; HELMHOLTZ PRINCIPLE; DETECTORS; FEATURES AB We introduce a method to perform automatic thresholding of SIFT descriptors that improves matching performance by at least 15.9% on the Oxford image matching benchmark. The method uses a contrario methodology to determine a unique bin magnitude threshold. This is done by building a generative uniform background model for descriptors and determining when bin magnitudes have reached a sufficient level. The presented method, called meaningful clamping, contrasts from the current SIFT implementation by efficiently computing a clamping threshold that is unique for every descriptor. C1 [Kirchner, Matthew R.] Naval Air Warfare Ctr, Image & Signal Proc Branch, Res Off, Weap Div, Code 4F0000D, China Lake, CA 93555 USA. RP Kirchner, MR (reprint author), Naval Air Warfare Ctr, Image & Signal Proc Branch, Res Off, Weap Div, Code 4F0000D, China Lake, CA 93555 USA. EM matthew.kirchner@navy.mil NR 31 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1522-4880 BN 978-1-4673-9961-6 J9 IEEE IMAGE PROC PY 2016 BP 291 EP 295 PG 5 WC Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Engineering; Imaging Science & Photographic Technology GA BG6QD UT WOS:000390782000058 ER PT S AU Meena, S Palaniappan, K Seetharaman, G AF Meena, Sachin Palaniappan, Kannappan Seetharaman, Guna GP IEEE TI USER DRIVEN SPARSE POINT-BASED IMAGE SEGMENTATION SO 2016 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP) SE IEEE International Conference on Image Processing ICIP LA English DT Proceedings Paper CT 23rd IEEE International Conference on Image Processing (ICIP) CY SEP 25-28, 2016 CL Phoenix, AZ SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers, Signal Proc Soc DE Interactive image segmentation; seed points; semi-supervised regression; elastic body splines AB Reducing the amount of user driven input for interactive image segmentation enables faster and more precise foreground extraction of objects. A sparse collection of labeled seed points sampled over image regions can be quickly provided by the user using a few mouse clicks. Seed points are used for training an Elastic Body Spline classifier mapping function. We evaluate the efficiency and accuracy of user defined point inputs compared to fully manual boundary drawing that can be time consuming and automatic image segmentation methods that may not have sufficient accuracy. We show that using an average of just 8 labeled pixels (i.e. sparse set of seed points) the proposed EBS foreground-background thresholding method can achieve 90 percent accuracy compared to manual ground truth on the Berkeley BSDS500 benchmark. C1 [Meena, Sachin; Palaniappan, Kannappan] Univ Missouri, Dept Comp Sci, Columbia, MO 65211 USA. [Seetharaman, Guna] US Naval Res Lab, Washington, DC 20375 USA. RP Meena, S (reprint author), Univ Missouri, Dept Comp Sci, Columbia, MO 65211 USA. NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1522-4880 BN 978-1-4673-9961-6 J9 IEEE IMAGE PROC PY 2016 BP 844 EP 848 PG 5 WC Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Engineering; Imaging Science & Photographic Technology GA BG6QD UT WOS:000390782000168 ER PT S AU Park, D Han, DK Ko, H AF Park, Dubok Han, David K. Ko, Hanseok GP IEEE TI NIGHTTIME IMAGE DEHAZING WITH LOCAL ATMOSPHERIC LIGHT AND WEIGHTED ENTROPY SO 2016 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP) SE IEEE International Conference on Image Processing ICIP LA English DT Proceedings Paper CT 23rd IEEE International Conference on Image Processing (ICIP) CY SEP 25-28, 2016 CL Phoenix, AZ SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers, Signal Proc Soc DE Airlight; dehazing; layer separation; transmission; weighted entropy ID VISIBILITY; QUALITY; MODEL AB In this paper, we propose a novel framework for nighttime image dehazing based on a nighttime haze model which accounts for varying light sources and their glow. First, glow effects are decomposed using relative smoothness. Atmospheric light is then estimated by combining global and local atmospheric lights using a local atmospheric selection map. The transmission is estimated by maximizing an objective function designed with weighted entropy. Finally, haze is removed using two estimated parameters which are atmospheric light and transmission. Experimental results validate the proposed method can achieve haze-free results while alleviating the glow effect. C1 [Park, Dubok; Ko, Hanseok] Korea Univ, Dept Visual Informat Proc, Seoul, South Korea. [Han, David K.] US Navy, Off Naval Res, Ocean Engn & Marine Syst Team, Arlington, VA USA. [Ko, Hanseok] Korea Univ, Sch Elect Engn, Seoul, South Korea. RP Park, D (reprint author), Korea Univ, Dept Visual Informat Proc, Seoul, South Korea. 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 SN 1522-4880 BN 978-1-4673-9961-6 J9 IEEE IMAGE PROC PY 2016 BP 2261 EP 2265 PG 5 WC Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Engineering; Imaging Science & Photographic Technology GA BG6QD UT WOS:000390782002065 ER PT S AU Rengarajan, V Punnappurath, A Rajagopalan, AN Seetharaman, G AF Rengarajan, Vijay Punnappurath, Abhijith Rajagopalan, A. N. Seetharaman, Gunasekaran GP IEEE TI ROLLING SHUTTER SUPER-RESOLUTION IN BURST MODE SO 2016 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP) SE IEEE International Conference on Image Processing ICIP LA English DT Proceedings Paper CT 23rd IEEE International Conference on Image Processing (ICIP) CY SEP 25-28, 2016 CL Phoenix, AZ SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers, Signal Proc Soc DE Burst mode; rolling shutter; super-resolution ID SUPER RESOLUTION AB apturing multiple images using the burst mode of handheld cameras can be a boon to obtain a high resolution (HR) image by exploiting the subpixel motion among the captured images arising from handshake. However, the caveat with mobile phone cameras is that they produce rolling shutter (RS) distortions that must be accounted for in the super-resolution process. We propose a method in which we obtain an RS-free HR image using HR camera trajectory estimated by leveraging the intra- and inter-frame continuity of the camera motion. Experimental evaluations demonstrate that our approach can effectively recover a super-resolved image free from RS artifacts. C1 [Rengarajan, Vijay; Punnappurath, Abhijith; Rajagopalan, A. N.] Indian Inst Technol Madras, Madras, Tamil Nadu, India. [Seetharaman, Gunasekaran] US Navy, Naval Res Lab, Washington, DC USA. RP Rengarajan, V; Punnappurath, A; Rajagopalan, AN (reprint author), Indian Inst Technol Madras, Madras, Tamil Nadu, India. NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1522-4880 BN 978-1-4673-9961-6 J9 IEEE IMAGE PROC PY 2016 BP 2807 EP 2811 PG 5 WC Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Engineering; Imaging Science & Photographic Technology GA BG6QD UT WOS:000390782002163 ER PT J AU Crawford, B Gera, R Miller, R Shrestha, B AF Crawford, Brian Gera, Ralucca Miller, Ryan Shrestha, Bijesh BE Kumar, R Caverlee, J Tong, H TI Community Evolution in Multiplex Layer Aggregation SO PROCEEDINGS OF THE 2016 IEEE/ACM INTERNATIONAL CONFERENCE ON ADVANCES IN SOCIAL NETWORKS ANALYSIS AND MINING ASONAM 2016 LA English DT Proceedings Paper CT 8th IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM) CY AUG 18-21, 2016 CL San Francisco, CA SP IEEE, Assoc Comp Machinery, ACM SIGMOD, IEEE Comp Soc, IEEE TCDE, Springer, VEEPIO AB This research studies community detection in multiplex dark networks. Our method seeks to intelligently select appropriate layers for aggregation to approximate communities in the whole network, while reducing the impact of over-modeling the network. Community evolution is explored as layers of different types of information are added to the partial picture of the network. We determine the set of dominant layers needed to produce similar community partitions to the established ground truth aggregate network. The identification of dominant layers enhances the selection of which layers to choose for aggregation purposes. This reduces redundancy and noise, and increases the optimization of the available data to produce the desired network partitions. We use normalized mutual index (NMI), purity, density, and modularity for methodology evaluation and comparison metrics. C1 [Crawford, Brian] Naval Postgrad Sch, Dept Comp Sci, Monterey, CA USA. [Gera, Ralucca; Miller, Ryan; Shrestha, Bijesh] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. RP Gera, R (reprint author), Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. EM rgera@nps.edu 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 BN 978-1-5090-2846-7 PY 2016 BP 1229 EP 1237 PG 9 WC Computer Science, Information Systems; Communication; Computer Science, Interdisciplinary Applications; Social Sciences, Interdisciplinary SC Computer Science; Communication; Social Sciences - Other Topics GA BG6PQ UT WOS:000390760100190 ER PT S AU Feroci, M Bozzo, E Brandt, S Hernanz, M van der Klis, M Liu, LP Orleanski, P Pohl, M Santangelo, A Schanne, S Stella, L Takahashi, T Tamura, H Watts, A Wilms, J Zane, S Zhang, SN Bhattacharyya, S Agudo, I Ahangarianabhari, M Albertus, C Alford, M Alpar, A Altamirano, D Alvarez, L Amati, L Amoros, C Andersson, N Antonelli, A Argan, A Artigue, R Artigues, B Atteia, JL Azzarello, P Bakala, P Ballantyne, DR Baldazzi, G Baldo, M Balman, S Barbera, M van Baren, C Barret, D Baykal, A Begelman, M Behar, E Behar, O Belloni, T Bellutti, P Bernardini, F Bertuccio, G Bianchi, S Bianchini, A Binko, P Blay, P Bocchino, F Bode, M Bodin, P Bombaci, I Bidaud, JMB Borghi, G Boutloukos, S Bouyjou, F Bradley, L Braga, J Briggs, MS Brown, E Buballa, M Bucciantini, N Burderi, L Burgay, M Bursa, M Budtz-Jorgensen, C Cackett, E Cadoux, FR Cais, P Caliandro, GA Campana, R Campana, S Cao, X Capitanio, F Casares, J Casella, P Castro-Tirado, AJ Cavazzutim, E Cavechi, Y Celestin, S Cerda-Duran, P Chakrabarty, D Chamel, N Chateau, F Chen, C Chen, Y Chen, Y Chenevez, J Chernyakova, M Coker, J Cole, R Collura, A Coriat, M Cornelisse, R Costamante, L Cros, A Cui, W Cumming, A Cusumano, G Czerny, B D'Ai, A D'Ammando, F D'Elia, V Dai, Z Del Monte, E De Luca, A De Martino, D Dercksen, JPC De Pasquale, M De Rosa, A Del Santo, M Di Cosimol, S Degenaar, N den Herder, JW Diebold, S Di Salvo, T Dong, Y Donnarumma, I Doroshenko, V Doyle, G Drake, SA Durant, M Emmanoulopoulos, D Enoto, T Erkut, MH Esposito, P Evangelista, Y Fabian, A Falanga, M Favre, Y Feldman, C Fender, R Peng, H Evangelista, V Ferrigno, C Ficorella, F Finger, M Finger, MH Fraser, GW Frericks, M Fullekrug, M Fuschino, F Gabler, M Galloway, DK Sanchez, JLG Gandhi, P Gao, Z Garcia-Berro, E Gendre, B Gevin, O Gezari, S Giles, AB Gilfanov, M Giommi, P Giovannini, G Giroletti, M Gogus, E Goldwurm, A Goluchova, K Gotz, D Gou, L Gouiffes, C Grandi, P Grassi, M Greiner, J Grinberg, V Groot, P Gschwender, M Gualtieri, L Guedel, M Guidorzi, C Guy, L Haas, D Haensel, P Hailey, M Hamuguchi, K Hansen, F Hartmann, DH Haswell, CA Hebeler, K Heger, A Hempel, M Hermsen, W Homan, J Hornstrup, A Hudec, R Huovelin, J Huppenkothen, D Inam, SC Ingram, A in't Zand, JJM Israel, G Iwasawa, K Izzo, L Jacobs, HM Jetter, F Johannsen, T Jacobs, HM Jenke, PA Jonker, P Jose, J Kaaret, P Kalamkar, M Kalemci, E Kanbach, G Karas, V Karelin, D Kataria, D Keek, L Kennedy, T Klochkov, D Kluzniak, W Koerding, E Kokkotas, K Komossa, S Korpela, S Kouveliotou, C Kowalski, AF Kreykenbohm, I Kuiper, LM Kunneriath, D Kurkela, A Kuvvetli, I La Franca, F Labanti, C Lai, D Lamb, FK Lachaud, C Laubert, PP Lebrun, F Li, X Liang, E Limousin, O Lin, D Linares, M Lodato, G Lodato, G Longo, F Lu, F Lund, N Maccarone, TJ Macera, D Maestre, S Mahmoodifar, S Maier, D Malcovati, P Malzac, J Malone, C Mandel, I Mangano, V Manousakis, A Marelli, JM Margueron, J Marisaldi, M Markoff, SB Markowitz, A Marinucci, A Martindale, A Martinez, G McHardy, IM Medina-Tanco, G Mehdipour, M Melatos, A Mendez, M Mereghetti, S Migliari, S Mignani, R Michalska, M Mihara, T Miller, MC Miller, JM Mineo, T Miniuttill, G Morsink, S Motch, C Motta, S Mouchet, M Mouret, G Mulacova, J Muleri, F Munoz-Darias, T Negueruela, I Neilsen, J Neubert, T Norton, AJ Nowak, M Nucita, A O'Brien, P Oertel, M Olsen, PEH Orienti, M Orio, M Orlandini, M Osborne, JP Osten, R Ozel, F Pacciani, L Paerels, F Paltani, S Paolillo, M Papadakis, I Papitto, A Paragi, Z Paredes, JM Patruno, A Paul, B Pederiva, F Perinati, E Pellizzoni, A Penacchioni, AV Peretz, U Perez, MA Perez-Torres, M Peterson, BM Petracek, V Picciotto, A Piemonte, C Pittoril, C Pons, J Portell, J Possenti, A Postnov, K Poutanen, J Prakash, M Prandoni, I Le Provost, H Psaltis, D Pye, J Qu, J Rambaud, D Ramon, P Ramsay, G Rapisarda, M Rachevski, A Rashevskaya, I Ray, PS Rea, N Reddy, S Reig, P Aranda, MR Remillard, R Reynolds, C Rezzolla, L Ribo, M de la Rie, R Riggio, A Rios, A Rischke, DH Rodriguez-Gil, P Rodriguez, J Rohlfs, R Romano, P Rossi, EMR Rozanska, A Rousseau, A Rudak, B Russell, DM Ryde, F Sabau-Graziati, L Sakamoto, T Sala, G Salvaterra, R Salvetti, D Sanna, A Sandberg, J Savolainen, T Scaringi, S Schaffner-Bielich, J Schatz, H Schee, J Schmid, C Serino, M Shakura, N Shore, S Schnittman, JD Schneider, R Schwenk, A Schwope, AD Sedrakian, A Seyler, JY Shearer, A Slowikowska, A Sims, M Smith, A Smith, DM Smith, PJ Sobolewska, M Sochora, V Soffitta, P Soleri, P Song, L Spencer, A Stamerra, A Stappers, B Staubert, R Steiner, AW Stergioulas, N Stevens, AL Stratta, G Strohmayer, TE Stuchlik, Z Suchy, S Suleimanovi, V Tamburini, F Tauris, T Tavecchio, F Tenzer, C Thielemann, FK Tiengo, A Tolos, L Tombesi, F Tomsick, J Torok, G Torrejon, JM Torres, DF Torresi, E Tramacere, A Traulsen, I Trois, A Turolla, R Turriziani, S Type, S Uter, P Uttley, P Vacchi, A Varniere, P Vaughan, S Vercellone, S Vietri, M Vincent, FH Vrba, V Walton, D Wang, J Wang, Z Watanabe, S Wawrzaszek, R Webb, N Weinberg, N Wende, H Wheatley, P Wijers, R Wijnands, R Wille, M Wilson-Hodge, CA Winter, B Walk, SJ Wood, K Woosley, SE Wu, X Xiao, L Xu, R Yu, W Yuan, F Yuan, W Yuan, Y Zampa, G Zampa, N Zampieri, L Zdunik, L Zdziarski, A Zech, A Zhang, B Zhang, C Zhang, S Zingale, M Zorzi, N Zwart, F AF Feroci, M. Bozzo, E. Brandt, S. Hernanz, M. van der Klis, M. Liu, L. -P. Orleanski, P. Pohl, M. Santangelo, A. Schanne, S. Stella, L. Takahashi, T. Tamura, H. Watts, A. Wilms, J. Zane, S. Zhang, S. -N. Bhattacharyya, S. Agudo, I. Ahangarianabhari, M. Albertus, C. Alford, M. Alpar, A. Altamirano, D. Alvarez, L. Amati, L. Amoros, C. Andersson, N. Antonelli, A. Argan, A. Artigue, R. Artigues, B. Atteia, J. -L. Azzarello, P. Bakala, P. Ballantyne, D. R. Baldazzi, G. Baldo, M. Balman, S. Barbera, M. van Baren, C. Barret, D. Baykal, A. Begelman, M. Behar, E. Behar, O. Belloni, T. Bellutti, P. Bernardini, F. Bertuccio, G. Bianchi, S. Bianchini, A. Binko, P. Blay, P. Bocchino, F. Bode, M. Bodin, P. Bombaci, I. Bidaud, J. -M. Bonnet Borghi, G. Boutloukos, S. Bouyjou, F. Bradley, L. Braga, J. Briggs, M. S. Brown, E. Buballa, M. Bucciantini, N. Burderi, L. Burgay, M. Bursa, M. Budtz-Jorgensen, C. Cackett, E. Cadoux, F. R. Cais, P. Caliandro, G. A. Campana, R. Campana, S. Cao, X. Capitanio, F. Casares, J. 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BE DenHerder, JWA Takahashi, T Bautz, M TI The LOFT mission concept - A status update SO SPACE TELESCOPES AND INSTRUMENTATION 2016: ULTRAVIOLET TO GAMMA RAY SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Space Telescopes and Instrumentation - Ultraviolet to Gamma Ray CY JUN 26-JUL 01, 2016 CL Edinburgh, SCOTLAND SP SPIE DE X-ray astronomy; Silicon detectors; timing; spectroscopy AB The Large Observatory For x-ray Timing (LOFT) is a mission concept which was proposed to ESA as M3 and M4 candidate in the framework of the Cosmic Vision 2015-2025 program. Thanks to the unprecedented combination of effective area and spectral resolution of its main instrument and the uniquely large field of view of its wide field monitor, LOFT will be able to study the behaviour of matter in extreme conditions such as the strong gravitational field in the innermost regions close to black holes and neutron stars and the supra-nuclear densities in the interiors of neutron stars. The science payload is based on a Large Area Detector (LAD, > 8m(2) effective area, 2-30 keV, 240 eV spectral resolution, 1 degree collimated field of view) and a Wide Field Monitor (WFM, 2-50 keV, 4 steradian field of view, 1 arcmin source location accuracy, 300 eV spectral resolution). The WFM is equipped with an on-board system for bright events (e. g., GRB) localization. The trigger time and position of these events are broadcast to the ground within 30 s from discovery. In this paper we present the current technical and programmatic status of the mission. C1 [Feroci, M.; Argan, A.; Campana, R.; Capitanio, F.; Del Monte, E.; De Rosa, A.; Del Santo, M.; Di Cosimol, S.; Donnarumma, I.; Evangelista, Y.; Iwasawa, K.; Muleri, F.; Pacciani, L.; Rapisarda, M.; Soffitta, P.; Trois, A.] IAPS INAF, Via Fosso Cavaliere 100, I-00133 Rome, Italy. 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EM marco.feroci@inaf.it RI Malcovati, Piero/S-2458-2016; OI TORRESI, ELEONORA/0000-0002-5201-010X; Malcovati, Piero/0000-0001-6514-9672; Wheatley, Peter/0000-0003-1452-2240; Paolillo, Maurizio/0000-0003-4210-7693; Sanna, Andrea/0000-0002-0118-2649; de Martino, Domitilla/0000-0002-5069-4202; Groot, Paul/0000-0002-4488-726X; Gendre, Bruce/0000-0002-9077-2025; orienti, monica/0000-0003-4470-7094; Stevens, Abigail/0000-0002-5041-3079; Esposito, Paolo/0000-0003-4849-5092; Poutanen, Juri/0000-0002-0983-0049; Tramacere, Andrea/0000-0002-8186-3793; Ray, Paul/0000-0002-5297-5278 NR 27 TC 0 Z9 0 U1 13 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 978-1-5106-0189-5; 978-1-5106-0190-1 J9 PROC SPIE PY 2016 VL 9905 AR UNSP 99051R-1 DI 10.1117/12.2233161 PN 1 PG 20 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BG2WP UT WOS:000387731500048 ER PT S AU Soffitta, P Bellazzini, R Bozzo, E Burwitz, V Castro-Tirado, AJ Costa, E Courvoisier, T Feng, H Gburek, S Goosmann, R Karas, V Matt, G Muleri, F Nandra, K Pearce, M Poutanen, J Reglero, V Maria, DS Santangelo, A Tagliaferri, G Tenzer, C Vink, J Weisskopf, MC Zane, S Agudo, I Antonelli, A Attina, P Baldini, L Bykov, A Carpentiero, R Cavazzuti, E Churazov, E Del Monte, E De Martino, D Donnarunnna, I Doroslienko, V Evangelista, Y Ferreira, I Gallo, E Grosso, N Kaaret, P Kuulkers, E Laranaga, J Latronico, L Lumb, DH Macian, J Malzac, J Marin, F Massaro, E Minuti, M Mundell, C Ness, JU Oosterbroek, T Paltani, S Pareschi, G Perna, R Petrucci, PO Pinazo, HB Pinchera, M Rodriguez, JP Roncadelli, M Santovincenzo, A Sazonov, S Sgro, C Spiga, D Svoboda, J Theobald, C Theodorou, T Turolla, R de Ona, EW Winter, B Akbar, AM Allan, H Aloisio, B Altamirano, D Amati, L Amato, E Angelakis, E Arezu, J Atteia, JL Axelsson, M Bachetti, M Ballo, L Balman, S Bandiera, R Barcons, N Basso, S Baykal, A Backer, W Behar, E Beheshtipour, B Belmont, R Berger, L Bernardini, F Bianchi, S Bisnovatvi-Kogan, G Blasi, P Blay, P Bodaghee, A Boer, M Boettcher, M Bogdanov, S Bombaci, I Bonino, R Braga, J Brandt, W Brez, A Bucciantini, N Burderi, L Caiazzo, I Campana, R Campana, S Capitanio, F Cappi, M Cardillo, M Casella, P Catmabacak, O Cenko, B Cerda-Duran, P Cerruti, C Chaty, S Chauvin, M Chen, V Chenevez, J Chernyakova, M Teddy, CCC Christodoulou, D Connell, P Corbet, R Zelati, FC Covino, S Cui, W Cusumano, G D'Ai, A D'Ammando, F Dadina, M De Rosa, A De Ruvo, L Degenaar, N Del Santo, M Del Zanna, L Dewangan, G Di Cosimo, S Di Lalla, N Di Persio, G Di Salvo, T Dias, T Done, C Dovciak, M Doyle, G Ducci, L Elsner, R Enoto, T Escada, J Esposito, P Eyles, C Fabiani, S Falanga, M Falocco, S Fan, Y Fender, R Feroci, M Ferrigno, C Forman, W Foschini, L Fragile, C Fuerst, F Fujita, Y Gasent-Blesa, JL Gelfand, J Gendre, B Ghirlanda, G Ghisellini, G Giroletti, M Goetz, D Gomez, JL Gonzalez, D Gonzalcz-Riestra, R Gotthelf, E Gou, L 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Zappacosta, L. Zdziarski, A. A. Zech, A. Zhang, H. Zhang, S. Zhang, S. Zhang, W. Zoghbi, A. BE DenHerder, JWA Takahashi, T Bautz, M TI XIPE the X-ray Imaging Polarimetry Explorer SO SPACE TELESCOPES AND INSTRUMENTATION 2016: ULTRAVIOLET TO GAMMA RAY SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Space Telescopes and Instrumentation - Ultraviolet to Gamma Ray CY JUN 26-JUL 01, 2016 CL Edinburgh, SCOTLAND SP SPIE DE X-ray Astronomy; Polarimetry; X-ray optics; Gas Pixel Detector ID GAS PIXEL DETECTOR; POLARIZATION; RADIATION AB XIPE, the X-ray Imaging Polarimetry Explorer, is a mission dedicated to X-ray Astronomy. At the time of writing XIPE is in a competitive phase A as fourth medium size mission of ESA (M4). It promises to reopen the polarimetry window in high energy Astrophysics after more than 4 decades thanks to a detector that efficiently exploits the photoelectric effect and to X-ray optics with large effective area. XIPE uniqueness is time-spectrally-spatially- resolved X-ray polarimetry as a breakthrough in high energy astrophysics and fundamental physics. Indeed the payload consists of three Gas Pixel Detectors at the focus of three X-ray optics with a total effective area larger than one XMM mirror but with a low weight. The payload is compatible with the fairing of the Vega launcher. XIPE is designed as an observatory for X- ray astronomers with 75% of the time dedicated to a Guest Observer competitive program and it is organized as a consortium across Europe with main contributions from Italy, Germany, Spain, United Kingdom, Poland, Sweden. C1 [Soffitta, P.; Costa, E.; Muleri, F.; Attina, P.; Del Monte, E.; Donnarunnna, I; Evangelista, Y.; Capitanio, F.; Cardillo, M.; De Rosa, A.; Di Cosimo, S.; Di Persio, G.; Fabiani, S.; Feroci, M.; Pacciani, L.; Rubini, A.; Sabatini, S.] IAPS INAF, Via Fosso del Cavaliere 100, I-00133 Rome, Italy. 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[Hartmann, D.; Paliya, V. S.] Clemson Univ, Clemson, SC 29634 USA. [Haswell, C.; Norton, A.] Open Univ, Walton Hall, Milton Keynes MK7 6AA, Bucks, England. [Heger, A.; Ho, L.] Monash Univ, Sch Phys, Monash Ctr Astrophys, Clayton, Vic 3800, Australia. [Heger, A.; Ho, L.] Monash Univ, Sch Math Sci, Clayton, Vic 3800, Australia. [Xu, R.] Peking Univ, 5 Yiheyuan Rd Haidian Dist, Beijing 100871, Peoples R China. [Stiele, H.] Tsinghua Univ, 30 Shuangqing Rd, Beijing, Peoples R China. [Huovelin, J.; Korpela, S.] Univ Helsinki, Dept Phys, Div Geophys & Astron, POB 48, FI-00014 Helsinki, Finland. [Izzo, L.] Sapienza Univ, Ple A Moro 2, I-00185 Rome, Italy. [Izzo, L.] ICRA, Ple A Moro 2, I-00185 Rome, Italy. [Jackson, M.] Cardiff Univ, Cardiff CF10 3XQ, Wales. [Jiang, J.] Fudan Univ, 220 Handan Rd, Shanghai, Peoples R China. [Ji, L.; Zhang, S.; Zhang, S.] Inst High Energy Phys, 19B YuquanLu, Beijing 1000049, Peoples R China. [Johannsen, T.] Perimeter Inst Theoret Phys, 31 Caroline St North, Waterloo, ON N2L 2Y5, Canada. [Jorstad, S.] Boston Univ, Inst Astrophys Res, Address 725 Commonwealth Ave, Boston, MA 02215 USA. [Koerding, E.] Radboud Univ Nijmegen, Comeniuslaan 4, NL-6525 HP Nijmegen, Netherlands. [Kong, A.] Natl Tsing Hua Univ, 101,Sect 2,Guangiu Rd, Hsinchu, Taiwan. [Kreykenbohm, I; Wilms, J.] Univ Erlangen Nurnberg, Schlosspl 4, D-91054 Erlangen, Germany. [Lai, D.] Cornell Univ, Space Bldg, Ithaca, NY 14853 USA. [Lazzati, D.] Oregon State Univ, Dept Phys, 301 Weniger Hall, Corvallis, OR 97331 USA. [Leahy, D.] Univ Calgary, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada. [Li, L. -X] Kavli Inst Astron & Astrophys, Qinghua W Rd, Beijing, Peoples R China. [Li, Z.] Xiangtan Univ, Dept Phys, Xiangtan, Hunan, Peoples R China. [Liu, H.] Guangxi Univ, Nanning, Xixiangtang, Peoples R China. [Lodato, G.] Univ Milan, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy. [Lohfink, A.; Middleton, N.] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England. [Longo, F.] Univ Trieste, Via Alfonso Valerio 32, I-34128 Trieste, Italy. [Luna, G.] IAFE COBNICET, RA-2290 Buenos Aires, DF, Argentina. [Mainieri, V] ESO, Karl Schwarzschild Str 2, D-85748 Garching, Germany. [Maitra, D.] Wheaton Coll, Dept Phys & Astron, 501 Coll Ave, Wheaton, IL 60187 USA. [Majczyna, A.] Natl Ctr Nucl Res, Andrzeja Soltana 7, PL-05400 Otwock, Poland. [Manousakis, A.; Rozanska, A.; Rudak, B.; Zdziarski, A. A.] Copernicus Astron Ctr, Bartycka 18, Warsaw, Poland. [Margutti, R.] NYU, New York, NY USA. [Marschcr, A.] Boston Univ, Boston, MA 02215 USA. [Massaro, E.; Shesheng, X.] Univ Roma La Sapienza, Piazzale Aldo Moro 5, I-00185 Rome, Italy. [McLaughlin, M.] West Virginia Univ, Morgantown, WV 26506 USA. [Medina-Tanco, G.] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Apartado Postal 70-543,Ciudad Univ, Mexico City 04510, DF, Mexico. [Mehdipour, N.] SRON, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands. [Mingo, B.; O'Brien, P.; Osborne, J.; Wiersema, K.] Univ Leicester, Univ Rd, Leicester LE1 7RH, Leics, England. [Morlino, G.] Gran Sasso Sci Inst, Viale Francesco Crispi 7, Laquila, Italy. [Nagataki, S.] RIKEN, Wako, Saitama, Japan. [Nardini, F.] Keele Univ, Keele ST5 5BG, Staffs, England. [Nattila, J.; Tsygankov, S.] Tuorla Observ, Vaisalantie 20, Piikkio 21500, Finland. [Nenonen, S.] Oxford Instruments Analyt Oy, Tarvonsalmenkatu 17, Espoo, Finland. [Nucita, A.] Univ Lecce, Piazza Tancredi N7, I-73100 Lecce, Italy. [Odaka, H.] ISAS JAXA, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan. [Olmi, B.; Pili, A. G.] Univ Florence, Piazza San Marco 4, I-50121 Florence, Italy. [Omodei, N.] Kipac, 2575 Sand Hill Rd,M-S 29, Menlo Pk, CA 94025 USA. [Pohl, M.] Univ Geneva, DPNC, Quai Ernest Ansermet 30, CH-1205 Geneva, Switzerland. [Papadakis, I] Univ Crete, Phys Dept, GR-71003 Iraklion, Greece. [Paragi, Z.] Joint Inst VLBI Europe JIVE, Postbus 2, NL-7090 AA Dwingeloo, Netherlands. [Pascal, P.] Observ Midi Pyrenees, 14 Ave Edouard Belim, F-31400 Toulouse, France. [Paul, B.] Raman Res Inst, C V Raman Ave, Sadashivanagar 560080, India. [Postnov, K.] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119992, Russia. [Reig, P.] Fdn Res & Technol Hellas, Leof Plastira 100, Iraklion 70013, Greece. [Reinsch, K.] Georg August Univ Goettingen, Inst Astrophys, Friedrich Hund Pl 1, D-37077 Gottingen, Germany. [Reiprich, T.] Argelander Inst Astron, Auf Hugel 71, D-53121 Bonn, Germany. [Rossi, M. E.] Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands. [Rosswog, S.] Stockholm Univ, Univ Vagen 10, S-11418 Stockholm, Sweden. [Sala, G.] Univ Politecn Cataluna, Campus Nord,Calle Jordi Girona 1-3, Barcelona 08034, Spain. [Savolainen, T.] Aalto Univ, Metsahovi Radio Observ, POB 13000, FI-00076 Aalto, Finland. [Schawinski, K.] Swiss Fed Inst Technol, Wolfgang Pauli Str 27, CH-8093 Zurich, Switzerland. [Schwope, A.] Leibniz Inst Astrophys Potsdam, An Sternwarte 16, D-14482 Potsdam, Germany. [Sharon, M.] Univ Alberta, Edmonton, AB T6G 2E9, Canada. [Shaw, A.] Univ Southampton, Southampton SO17 1BJ, Hants, England. [Shearer, A.] Natl Univ Ireland Galway, Univ Rd, Galway, Ireland. [Shih, I. -C; Vincent, F.; Zech, A.] Observ Paris, 61 Ave Observ, F-75014 Paris, France. [Stamerra, A.; Zanni, C.] INAF OA Torino, I-10024 Turin, Italy. [Stappers, B.] Univ Manchester, Booth St West, Manchester M15 6PB, Lancs, England. [Starrfield, S.] Arizona State Univ Tempe, Sch Earth & Space Explorat, POB 871404, Tempe, AZ 85287 USA. [Stawarz, L.] Jagiellonian Univ, Astron Observ, Ft 38 Skala,Orla 171, PL-30244 Krakow, Poland. [Stergioulas, N.] Aristotle Univ Thessaloniki, Thessaloniki 54124, Greece. [Slowikowska, A.] Janusz Gil Inst Astron, Ul Szafrana 2, PL-65516 Zielona Gora, Poland. [Tiengo, A.] Ist Univ Super Pavia, IUSS, Palazzo Broletto,Piazza Vittoria 15, I-27100 Pavia, Italy. [Tombesi, F.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA. [Tomsick, J.] Univ Calif Berkeley, Space Sci Lab, 7 Gauss Way, Berkeley, CA 94720 USA. [Tong, H.] Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China. [Torok, G.] Silesian Univ Opava, Na Rybnicku 626-1, Opava 74601, Czech Republic. [Trimble, V] Univ Calif Irvine, Phys Astron Dept, Phys 4575, Irvine, CA 92697 USA. [Turriziani, S.] Univ Roma Tor Vergata, Via Ric Sci 1, I-00133 Rome, Italy. [Varniere, P.] Univ Paris Diderot, AstroParticule & Cosmol, APC, CNRS,UMR 7164,N2P3, F-75205 Paris 13, France. [Wang, Z.] Tongji Univ, Shanghai 200092, Peoples R China. [Wheeler, J. C.] Univ Texas Austin, Dept Astron, 2515 Speedway,Stop C1400, Austin, TX 78712 USA. [Yu, W.; Yuan, F.] Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China. [Zanin, R.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany. [Zhang, H.] Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA. RP Soffitta, P (reprint author), IAPS INAF, Via Fosso del Cavaliere 100, I-00133 Rome, Italy. RI Bykov, Andrei/E-3131-2014; Miniutti, Giovanni/L-2721-2014; OI Miniutti, Giovanni/0000-0003-0707-4531; de Martino, Domitilla/0000-0002-5069-4202; Gendre, Bruce/0000-0002-9077-2025; orienti, monica/0000-0003-4470-7094; Del Zanna, Luca/0000-0001-5200-882X; Angelakis, Emmanouil/0000-0001-7327-5441; Poutanen, Juri/0000-0002-0983-0049; Blasi, Pasquale/0000-0003-2480-599X NR 25 TC 1 Z9 1 U1 10 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 978-1-5106-0189-5; 978-1-5106-0190-1 J9 PROC SPIE PY 2016 VL 9905 AR UNSP 990515 DI 10.1117/12.2233046 PN 1 PG 20 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BG2WP UT WOS:000387731500030 ER PT S AU Tatischeff, V Tavani, M von Ballmoos, P Hanlon, L Oberlack, U Aboudan, A Argan, A Bernard, D Brogna, A Bulgarelli, A Bykov, A Campana, R Caraveo, P Cardillo, M Coppi, P De Angelis, A Diehl, R Donnarumma, I Fioretti, V Giuliani, A Grenier, I Grove, JE Hamadache, C Hartmann, D Hernanz, M Isern, J Kanbach, G Kiener, J Knodlseder, J Labanti, C Laurent, P Limousin, O Longo, F Marisaldi, M McBreen, S McEnery, JE Mereghetti, S Mirabel, F Morselli, A Nakazawa, K Peyre, J Piano, G Pittori, C Sabatini, S Stawarz, L Thompson, DJ Ulyanov, A Walter, R Wu, X Zdziarski, A Zoglauer, A AF Tatischeff, V. Tavani, M. von Ballmoos, P. Hanlon, L. Oberlack, U. Aboudan, A. Argan, A. Bernard, D. Brogna, A. Bulgarelli, A. Bykov, A. Campana, R. Caraveo, P. Cardillo, M. Coppi, P. De Angelis, A. Diehl, R. Donnarumma, I. Fioretti, V. Giuliani, A. Grenier, I. Grove, J. E. Hamadache, C. Hartmann, D. Hernanz, M. Isern, J. Kanbach, G. Kiener, J. Knodlseder, J. Labanti, C. Laurent, P. Limousin, O. Longo, F. Marisaldi, M. McBreen, S. McEnery, J. E. Mereghetti, S. Mirabel, F. Morselli, A. Nakazawa, K. Peyre, J. Piano, G. Pittori, C. Sabatini, S. Stawarz, L. Thompson, D. J. Ulyanov, A. Walter, R. Wu, X. Zdziarski, A. Zoglauer, A. CA E-ASTROGAM Collaboration BE DenHerder, JWA Takahashi, T Bautz, M TI The e-ASTROGAM gamma-ray space mission SO SPACE TELESCOPES AND INSTRUMENTATION 2016: ULTRAVIOLET TO GAMMA RAY SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Space Telescopes and Instrumentation - Ultraviolet to Gamma Ray CY JUN 26-JUL 01, 2016 CL Edinburgh, SCOTLAND SP SPIE DE Gamma-ray astronomy; time-domain astronomy; space mission; Compton and pair creation telescope; gamma-ray polarization; high-energy astrophysical phenomena ID LARGE-AREA TELESCOPE; SOURCE CATALOG; ASTRONOMY; DETECTOR; DESIGN; CTA AB e-ASTROGAM is a gamma-ray space mission to be proposed as the M5 Medium-size mission of the European Space Agency. It is dedicated to the observation of the Universe with unprecedented sensitivity in the energy range 0.2 - 100 MeV, extending up to GeV energies, together with a groundbreaking polarization capability. It is designed to substantially improve the COMPTEL and Fermi sensitivities in the MeV-GeV energy range and to open new windows of opportunity for astrophysical and fundamental physics space research. e-ASTROGAM will operate as an open astronomical observatory, with a core science focused on (1) the activity from extreme particle accelerators, including gamma-ray bursts and active galactic nuclei and the link of jet astrophysics to the new astronomy of gravitational waves, neutrinos, ultra-high energy cosmic rays, (2) the high-energy mysteries of the Galactic center and inner Galaxy, including the activity of the supermassive black hole, the Fermi Bubbles, the origin of the Galactic positrons, and the search for dark matter signatures in a new energy window; (3) nucleosynthesis and chemical evolution, including the life cycle of elements produced by supernovae in the Milky Way and the Local Group of galaxies. e-ASTROGAM will be ideal for the study of high-energy sources in general, including pulsars and pulsar wind nebulae, accreting neutron stars and black holes, novae, supernova remnants, and magnetars. And it will also provide important contributions to solar and terrestrial physics. The e-ASTROGAM telescope is optimized for the simultaneous detection of Compton and pair-producing gamma-ray events over a large spectral band. It is based on a very high technology readiness level for all subsystems and includes many innovative features for the detectors and associated electronics. C1 [Tatischeff, V.; Kiener, J.; Peyre, J.] CNRS, CSNSM, IN2P3, F-91405 Orsay, France. [Tatischeff, V.; Hamadache, C.; Kiener, J.; Peyre, J.] Univ Paris 11, F-91405 Orsay, France. [Tavani, M.; Argan, A.; Donnarumma, I.; Piano, G.; Sabatini, S.] INAF IAPS, Via Fosso Cavaliere 100, I-00133 Rome, Italy. [Tavani, M.; Stawarz, L.] Univ Roma Tor Vergata, Dip Fis, Via Ric Sci, I-00133 Rome, Italy. [Tavani, M.; Hanlon, L.] Gran Sasso Sci Inst, Viale Francesco Crispi 7, I-67100 Laquila, Italy. [von Ballmoos, P.; Knodlseder, J.] IRAP, 9 Av Colonel Roche, F-31028 Toulouse, France. [McBreen, S.; Ulyanov, A.] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland. [Oberlack, U.] Johannes Gutenberg Univ Mainz, PRISMA Detector Lab, Mainz, Germany. [Aboudan, A.; Bulgarelli, A.; Campana, R.; Labanti, C.; Marisaldi, M.] INAF IASF Bologna, Via Gobetti 101, I-40129 Bologna, Italy. [Bernard, D.] Ecole Polytech, LLR, CNRS IN2P3, F-91128 Palaiseau, France. [Bykov, A.] Ioffe Inst, St Petersburg 194021, Russia. [Caraveo, P.; Giuliani, A.; Mereghetti, S.] INAF IASF Milano, Via E Bassini 15, I-20133 Milan, Italy. [Cardillo, M.] INAF, Osservatorio Astron Arcetri, Largo Enrico Fermi 5, I-50125 Florence, Italy. [Coppi, P.] Yale Univ, Dept Astron, POB 208101, New Haven, CT 06520 USA. [De Angelis, A.] INFN Padova, Via Marzolo 8, I-35141 Padua, Italy. [Diehl, R.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Grenier, I.] Univ Paris Diderot, CNRS, CEA IRFU, AIM Paris Saclay, F-91191 Gif Sur Yvette, France. [Grove, J. E.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA. [Hartmann, D.] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA. [Hernanz, M.; Isern, J.] ICE CSIC IEEC, Campus UAB, Barcelona 08193, Spain. [Laurent, P.] Univ Paris Diderot, APC, Observ Paris, CNRS IN2P3,CEA Irfu, 10 Rue Alice Domont & Leonie Duquet, F-75205 Paris 13, France. [Limousin, O.] CEA Saclay, DSM, Irfu, Serv Astrophys, F-91191 Gif Sur Yvette, France. [Longo, F.] Univ Trieste, Dip Fis, Via Valerio 2, I-34127 Trieste, Italy. [Longo, F.] INFN, Via Valerio 2, I-34127 Trieste, Italy. [McEnery, J. E.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Morselli, A.] INFN Roma Tor Vergata, Via Ric Sci 1, I-00133 Rome, Italy. [Nakazawa, K.] Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo, Japan. [Pittori, C.] ASI Sci Data Ctr ASDC, Via Politecn, I-00133 Rome, Italy. [Pittori, C.] INAF OAR, Via Frascati 33, I-00078 Rome, Italy. [Stawarz, L.] JAXA, ISAS, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan. [Stawarz, L.] Jagiellonian Univ, Astron Observ, Ulica Orla 171, PL-30244 Krakow, Poland. [Walter, R.] Univ Geneva, Observ Geneva, ISDC, CH-1211 Geneva 4, Switzerland. [Wu, X.] Univ Geneva, Dept Phys Nucl & Corpusculaire, CH-1211 Geneva 4, Switzerland. [Zdziarski, A.] Cent Astron M Kopernika, Bartycka 18, PL-00716 Warsaw, Poland. [Zoglauer, A.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. RP Tatischeff, V (reprint author), CNRS, CSNSM, IN2P3, F-91405 Orsay, France.; Tatischeff, V (reprint author), Univ Paris 11, F-91405 Orsay, France. EM Vincent.Tatischeff@csnsm.in2p3.fr RI Bykov, Andrei/E-3131-2014 NR 27 TC 2 Z9 2 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0189-5; 978-1-5106-0190-1 J9 PROC SPIE PY 2016 VL 9905 AR UNSP 99052N DI 10.1117/12.2231601 PN 1 PG 11 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BG2WP UT WOS:000387731500075 ER PT S AU Wilson-Hodge, CA Ray, PS Chakrabarty, D Feroci, M Alvarez, L Baysinger, M Becker, C Bozzo, E Brandt, S Carson, B Chapman, J Dominguez, A Fabisinski, L Gangl, B Garcia, J Griffith, C Hernanz, M Hickman, R Hopkins, R Hui, M Ingram, L Jenke, P Korpela, S Maccarone, T Michalska, M Pohl, M Santangelo, A Schanne, S Schnell, A Stella, L van der Klis, M Watts, A Winter, B Zane, S AF Wilson-Hodge, Colleen A. Ray, Paul S. Chakrabarty, Deepto Feroci, Marco Alvarez, Laura Baysinger, Michael Becker, Chris Bozzo, Enrico Brandt, Soren Carson, Billy Chapman, Jack Dominguez, Alexandra Fabisinski, Leo Gangl, Bert Garcia, Jay Griffith, Christopher Hernanz, Margarita Hickman, Robert Hopkins, Randall Hui, Michelle Ingram, Luster Jenke, Peter Korpela, Seppo Maccarone, Tom Michalska, Malgorzata Pohl, Martin Santangelo, Andrea Schanne, Stephane Schnell, Andrew Stella, Luigi van der Klis, Michiel Watts, Anna Winter, Berend Zane, Silvia CA LOFT Consortium US-LOFT SWG LOFT-P Collaboration BE DenHerder, JWA Takahashi, T Bautz, M TI Large Observatory for x-ray Timing (LOFT-P): A Probe-class Mission Concept Study SO SPACE TELESCOPES AND INSTRUMENTATION 2016: ULTRAVIOLET TO GAMMA RAY SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Space Telescopes and Instrumentation - Ultraviolet to Gamma Ray CY JUN 26-JUL 01, 2016 CL Edinburgh, SCOTLAND SP SPIE DE Neutron Stars; Black Holes; X-ray Timing; Silicon Drift Detectors; Mission Concepts AB LOFT-P is a mission concept for a NASA Astrophysics Probe-Class (<$1B) X-ray timing mission, based on the LOFT M-class concept originally proposed to ESAs M3 and M4 calls. LOFT-P requires very large collecting area, high time resolution, good spectral resolution, broad-band spectral coverage (2-30 keV), highly flexible scheduling, and an ability to detect and respond promptly to time-critical targets of opportunity. It addresses science questions such as: What is the equation of state of ultra dense matter? What are the effects of strong gravity on matter spiraling into black holes? It would be optimized for sub-millisecond timing of bright Galactic X-ray sources including X-ray bursters, black hole binaries, and magnetars to study phenomena at the natural timescales of neutron star surfaces and black hole event horizons and to measure mass and spin of black holes. These measurements are synergistic to imaging and high-resolution spectroscopy instruments, addressing much smaller distance scales than are possible without very long baseline X-ray interferometry, and using complementary techniques to address the geometry and dynamics of emission regions. LOFT-P would have an effective area of >6 m(2), > 10x that of the highly successful Rossi X-ray Timing Explorer (RXTE). A sky monitor (2-50 keV) acts as a trigger for pointed observations, providing high duty cycle, high time resolution monitoring of the X-ray sky with similar to 20 times the sensitivity of the RXTE All-Sky Monitor, enabling multi-wavelength and multi-messenger studies. A probe-class mission concept would employ lightweight collimator technology and large-area solid-state detectors, segmented into pixels or strips, technologies which have been recently greatly advanced during the ESA M3 Phase A study of LOFT. Given the large community interested in LOFT (> 800 supporters*, the scientific productivity of this mission is expected to be very high, similar to or greater than RXTE (similar to 2000 refereed publications). We describe the results of a study, recently completed by the MSFC Advanced Concepts Office, that demonstrates that such a mission is feasible within a NASA probe-class mission budget. C1 [Wilson-Hodge, Colleen A.; Baysinger, Michael; Becker, Chris; Carson, Billy; Chapman, Jack; Dominguez, Alexandra; Fabisinski, Leo; Gangl, Bert; Garcia, Jay; Hickman, Robert; Hopkins, Randall; Hui, Michelle; Ingram, Luster; Schnell, Andrew] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA. [Ray, Paul S.] US Naval Res Lab, Washington, DC USA. [Chakrabarty, Deepto] MIT Kavli Inst Astrophys & Space Res, Cambridge, MA USA. [Feroci, Marco] INAF IASF, Rome, Italy. [Feroci, Marco] INFN Roma Tor Vergata, Rome, Italy. [Alvarez, Laura; Hernanz, Margarita] ICE CSIC IEEC, Barcelona, Spain. [Bozzo, Enrico] ISDC, Geneva, Switzerland. [Brandt, Soren] DTU, Lyngby, Denmark. [Griffith, Christopher] US Naval Res Lab, NRC Res Associate, Washington, DC USA. [Jenke, Peter] Univ Alabama, Huntsville, AL 35899 USA. [Korpela, Seppo] Univ Helsinki, Helsinki, Finland. [Maccarone, Tom] Texas Tech Univ, Lubbock, TX 79409 USA. [Michalska, Malgorzata] Space Res Ctr, Warsaw, Poland. [Pohl, Martin] DPNC, Geneva, Switzerland. [Santangelo, Andrea] Tuebingen Univ, Tubingen, Germany. [Schanne, Stephane] CEA Saclay, IRFU, Saclay, France. [Stella, Luigi] INAF OA, Rome, Italy. [van der Klis, Michiel; Watts, Anna] Univ Amsterdam, Amsterdam, Netherlands. [Winter, Berend; Zane, Silvia] UCL, Mullard Space Sci Lab, London, England. RP Wilson-Hodge, CA (reprint author), NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA. EM colleen.wilson@nasa.gov OI Ray, Paul/0000-0002-5297-5278 NR 10 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0189-5; 978-1-5106-0190-1 J9 PROC SPIE PY 2016 VL 9905 AR UNSP 99054Y-1 DI 10.1117/12.2232944 PN 1 PG 12 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BG2WP UT WOS:000387731500141 ER PT J AU Canclini, J McMasters, J Shey, J Walker, O Rakvic, R Ngo, H Fairbanks, KD AF Canclini, JonPaul McMasters, James Shey, James Walker, Owens Rakvic, Ryan Ngo, Hau Fairbanks, Kevin D. BE Chakrabarti, S Saha, HN TI Inferring Read and Write Operations of Solid-State Drives Based on Energy Consumption SO 2016 IEEE 7TH ANNUAL UBIQUITOUS COMPUTING, ELECTRONICS MOBILE COMMUNICATION CONFERENCE (UEMCON) LA English DT Proceedings Paper CT 7th IEEE Annual Ubiquitous Computing, Electronics and Mobile Communication Conference (IEEE UEMCON) CY OCT 20-22, 2016 CL New York, NY SP IEEE, Columbia Univ, IEEE New York Sect, IEEE USA, IEEE Reg 1 DE Flash Memory Cells; Memory Architecture; Data Processing; Classification Algorithms AB The demand for Solid-State drives (SSDs) has risen as their speed, size, and architecture have improved. SSDs introduce a security risk because they contain a separate processor to optimize the SSD's lifespan. The lack of transparency of the operations conducted by this onboard processor creates a challenge to users, particularly in digital forensics settings. This paper utilizes non-destructive voltage measurement techniques to monitor the occurrence of read and write operations on an SSD. An automated cross-drive, cross-operating system classifier is presented which is capable of correctly identifying both read and write operations with up to 100 percent accuracy across four different experimental configurations. C1 [Canclini, JonPaul; McMasters, James; Shey, James; Walker, Owens; Rakvic, Ryan; Ngo, Hau] US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA. [Fairbanks, Kevin D.] US Naval Acad, USNA Digital Forens Lab, Annapolis, MD 21402 USA. RP Canclini, J (reprint author), US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA. EM jonpaulcanclini@gmail.com; jamesmcmasters1@yahoo.com; shey@usna.edu; owalker@usna.edu; rakvic@usna.edu; ngo@usna.edu; kevin@fairbanksphd.com 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 978-1-5090-1496-5 PY 2016 PG 6 WC Computer Science, Hardware & Architecture; Computer Science, Interdisciplinary Applications; Telecommunications SC Computer Science; Telecommunications GA BG6LL UT WOS:000390536700093 ER PT J AU Zhao, Y Zhou, CC AF Zhao, Ying Zhou, Charles C. BE Chakrabarti, S Saha, HN TI System Self-Awareness Towards Deep Learning and Discovering High-Value Information SO 2016 IEEE 7TH ANNUAL UBIQUITOUS COMPUTING, ELECTRONICS MOBILE COMMUNICATION CONFERENCE (UEMCON) LA English DT Proceedings Paper CT 7th IEEE Annual Ubiquitous Computing, Electronics and Mobile Communication Conference (IEEE UEMCON) CY OCT 20-22, 2016 CL New York, NY SP IEEE, Columbia Univ, IEEE New York Sect, IEEE USA, IEEE Reg 1 DE System Self-Awareness; Deep Learning; high-value information discovery; recursion; distributed systems; swarm intelligence; Lexical Link Analysis; Collaborative Learning Agent; modularity; Big Data ID CENTRALITY; NETWORKS AB In this paper, we show a System Self-Awareness concept and theory that can be used to discover authoritative and popular information as well as emerging and anomalous information when traditional connections among information nodes (e.g., hyperlinks or citations) are not available. The different categories of information can be all high-value depending on the application requirements. A System Self-Awareness is a data-driven framework, modeled and measured using a recursive distributed infrastructure named Collaborative Learning Agent and a Deep Learning method named Lexical Link Analysis. The combination of the three allows Deep Reinforcement Learning and Swarm Intelligence to be extended and enhanced in a completely new perspective. C1 [Zhao, Ying] Naval Postgrad Sch, Dept Informat Sci, Monterey, CA 93943 USA. [Zhou, Charles C.] Quantum Intelligence Inc, Monterey, CA 93943 USA. RP Zhao, Y (reprint author), Naval Postgrad Sch, Dept Informat Sci, Monterey, CA 93943 USA. EM yzhao@nps.edu; charles.zhou@quantumii.com NR 40 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-1496-5 PY 2016 PG 8 WC Computer Science, Hardware & Architecture; Computer Science, Interdisciplinary Applications; Telecommunications SC Computer Science; Telecommunications GA BG6LL UT WOS:000390536700087 ER PT S AU Chung, TH Clement, MR Day, MA Jones, KD Davis, D Jones, M AF Chung, Timothy H. Clement, Michael R. Day, Michael A. Jones, Kevin D. Davis, Duane Jones, Marianna BE Okamura, A Menciassi, A Ude, A Burschka, D Lee, D Arrichiello, F Liu, H Moon, H Neira, J Sycara, K Yokoi, K Martinet, P Oh, P Valdastri, P Krovi, V TI Live-Fly, Large-Scale Field Experimentation for Large Numbers of Fixed-Wing UAVs SO 2016 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA) SE IEEE International Conference on Robotics and Automation ICRA LA English DT Proceedings Paper CT IEEE International Conference on Robotics and Automation (ICRA) CY MAY 16-21, 2016 CL Royal Inst Technol, Ctr Autonomous Syst, Stockholm, SWEDEN SP IEEE, IEEE Robot & Automat Soc, ABB, DJI, KUKA, Husqvarna, iRobot, Khalifa Univ, Kinova Univ, MOOG, PAL Robot, UBER, Amazon HO Royal Inst Technol, Ctr Autonomous Syst ID NETWORKS AB In this paper, we present extensive advances in live-fly field experimentation capabilities of large numbers of fixed-wing aerial robots, and highlight both the enabling technologies as well as the challenges addressed in such large-scale flight operations. We showcase results from recent field tests, including the autonomous launch, flight, and landing of 50 UAVs, which illuminate numerous operational lessons learned and generate rich multi-UAV datasets. We detail the design and open architecture of the testbed, which intentionally leverages low-cost and open-source components, aimed at promoting continued advances and alignment of multi-robot systems research and practice. C1 [Chung, Timothy H.; Clement, Michael R.; Day, Michael A.; Jones, Kevin D.; Davis, Duane; Jones, Marianna] Naval Postgrad Sch, Adv Robot Syst Engn Lab, Monterey, CA 93943 USA. RP Chung, TH (reprint author), Naval Postgrad Sch, Adv Robot Syst Engn Lab, Monterey, CA 93943 USA. EM thchung@nps.edu; mrclemen@nps.edu; maday@nps.edu; kdjones@nps.edu; dtdavi1@nps.edu; mjjones@nps.edu NR 16 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1050-4729 BN 978-1-4673-8026-3 J9 IEEE INT CONF ROBOT PY 2016 BP 1255 EP 1262 PG 8 WC Automation & Control Systems; Robotics SC Automation & Control Systems; Robotics GA BG5KH UT WOS:000389516201020 ER PT S AU Maule, RW AF Maule, R. William BE Pu, C Fox, G Damiani, E TI Complex Quality of Service Lifecycle Assessment Methodology SO 2016 IEEE INTERNATIONAL CONGRESS ON BIG DATA - BIGDATA CONGRESS 2016 SE IEEE International Congress on Big Data LA English DT Proceedings Paper CT IEEE International Congress on Big Data (BigData Congress) CY JUN 27-JUL 02, 2016 CL San Francisco, CA SP IEEE, IEEE Comp Soc, Serv Comp, Serv Soc, Cloud Comp, BiG Data, hp, IBM, ERICSSON, SAP, IBM Res, Huawei, Object Management Grp, IEEE Cloud Comp, Business Proc Integrat & Management, IT Profess, Int Journal Web Serv Res, Comp Now, IEEE Transact Serv Comp DE QoS; SOA; BigData; IoT; Cyber; Lifecycle ID SYSTEMS AB Large-scale systems engineering projects involving hundreds of independent systems with complex systems integration requirements and high levels of security necessitate specialized analytics methodology to ensure systems readiness across their operational lifecycle. This includes assessment of systems, components, processes and services over time, and in the range of technical, operational and environmental contexts in which the service will operate. This paper presents a quality of service audit method for assessment of complex integrated services. C1 [Maule, R. William] US Navy, Postgrad Sch, Grad Sch Operat & Informat Sci, Monterey, CA 93943 USA. RP Maule, RW (reprint author), US Navy, Postgrad Sch, Grad Sch Operat & Informat Sci, Monterey, CA 93943 USA. EM rwmaule@nps.edu NR 37 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2379-7703 BN 978-1-5090-2622-7 J9 IEEE INT CONGR BIG PY 2016 BP 462 EP 469 DI 10.1109/BigDataCongress.2016.71 PG 8 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BG6FJ UT WOS:000390212200064 ER PT S AU Gomez-Garcia, R Guyette, AC AF Gomez-Garcia, Roberto Guyette, Andrew C. GP IEEE TI Two-Branch Channelized Passive Filters for Lowpass and Bandpass Applications SO 2016 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS) SE IEEE MTT-S International Microwave Symposium LA English DT Proceedings Paper CT IEEE MTT-S International Microwave Symposium (IMS) CY MAY 22-27, 2016 CL San Francisco, CA SP IEEE DE Bandpass filters; channelized filters; lowpass filters; microstrip filters; notch filters; passive filters; planar filters; reconfigurable filters; transmission zero (TZ); tunable filters ID ACTIVE-FILTERS AB Fully-passive two-branch channelized circuit configurations for high-selectivity planar filter realization are reported in this work. They exploit the in-parallel connection of two frequency-contiguous low-order passive filters-main and auxiliary channels-to synthesize an enhanced-selectivity filtering response by means of signal-interference principles. Added features of the channelized passive filter in relation to its building channels are: i) bandwidth enlargement of the overall transmission band and ii) the generation of reconfigurable notches in the transfer function of the main channel for dynamic interference suppression by detuning the poles of the auxiliary channel. As experimental proof-of-concept, two microstrip prototypes consisting of a frequency-static quasi-elliptic-type lowpass filter and a bandpass filter with tunable-dual-notch-creation capability through mechanically-adjustable capacitors are built and tested. C1 [Gomez-Garcia, Roberto] Univ Alcala De Henares, Dept Signal Theory & Commun, Madrid 28871, Spain. [Guyette, Andrew C.] Naval Res Lab, Code 6851, Washington, DC 20375 USA. RP Gomez-Garcia, R (reprint author), Univ Alcala De Henares, Dept Signal Theory & Commun, Madrid 28871, Spain. EM roberto.gomez.garcia@ieee.org; andrew.guyette@nrl.navy.mil NR 5 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0149-645X BN 978-1-5090-0698-4 J9 IEEE MTT S INT MICR PY 2016 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG6JO UT WOS:000390313200298 ER PT S AU Naglich, EJ Guyette, AC AF Naglich, Eric J. Guyette, Andrew C. GP IEEE TI Power-Dependent Bandstop Filters for Frequency-Selective Limiting SO 2016 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS) SE IEEE MTT-S International Microwave Symposium LA English DT Proceedings Paper CT IEEE MTT-S International Microwave Symposium (IMS) CY MAY 22-27, 2016 CL San Francisco, CA SP IEEE DE Limiting; filters; resonator filters; microstrip filters; microwave filters ID LIMITERS AB The use of a power-dependent coupling structure that allows a cul-de-sac bandstop filter topology to continuously transform between a resonant all-pass response and a bandstop filter response with increasing input power is shown. In contrast to limiter devices that provide a wideband short circuit or ferrite resonance under high-power excitation, the concept presented in this paper provides the ability to design limiters with frequency-selectivity and without magnetic materials. For verification, a third-order power-dependent bandstop filter was designed and fabricated. It has a center frequency of 2.15 GHz, 3 dB bandwidth of 400 MHz, 1 dB limiting threshold of approximately 25 dBm, a response time of 10 ns, and provides over 16 dB of limiting. C1 [Naglich, Eric J.; Guyette, Andrew C.] Naval Res Lab, Washington, DC 20375 USA. RP Naglich, EJ (reprint author), Naval Res Lab, Washington, DC 20375 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 978-1-5090-0698-4 J9 IEEE MTT S INT MICR PY 2016 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG6JO UT WOS:000390313200411 ER PT J AU Deal, T Smith, KB AF Deal, Thomas Smith, Kevin B. GP IEEE TI Modeling Acoustic Vector Fields for Inverse Problems (Invited Paper) SO 2016 IEEE/OES CHINA OCEAN ACOUSTICS SYMPOSIUM (COA) LA English DT Proceedings Paper CT IEEE/OES China Ocean Acoustics (COA) CY JAN 09-11, 2016 CL Harbin, PEOPLES R CHINA SP IEEE, OES DE vector field; complex acoustic intensity; reciprocity; inverse field; propagation modeling AB Acoustic vector sensors that measure pressure and orthogonal particle velocity are gaining widespread interest. Predicting their performance requires calculating the pressure field and the velocity fields, which require spatial gradients of the pressure field. In typical hydrophone applications, significant computational savings are realized by using reciprocity to generate the pressure field as a function of source position rather than receive position. However, the presence of the spatial gradients in the velocity fields means that reciprocity cannot be used to model the vector field for inverse problems. Instead, the inverse vector velocity field must be computed point by point, even for the simplest environments. Examples of this effect are demonstrated by the derivation of analytic expressions for pressure and particle velocity in a Pekeris waveguide. These simple waveguide results are extended to arbitrary, range-dependent, environment parameters using a parabolic equation model. C1 [Deal, Thomas] US Navy, Undersea Warfare Ctr, Div Newport, Newport, RI 02841 USA. [Smith, Kevin B.] US Navy, Postgrad Sch, Monterey, CA 93943 USA. RP Deal, T (reprint author), US Navy, Undersea Warfare Ctr, Div Newport, Newport, RI 02841 USA. EM thomas.deal@navy.mil; kbsmith@nps.edu NR 4 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9978-4 PY 2016 PG 5 WC Acoustics; Engineering, Multidisciplinary SC Acoustics; Engineering GA BG6HU UT WOS:000390300800196 ER PT J AU Cochenour, B Laux, A Mullen, L AF Cochenour, Brandon Laux, Alan Mullen, Linda GP IEEE TI Temporal dispersion in underwater laser communication links: closing the loop between model and experiment SO 2016 IEEE THIRD UNDERWATER COMMUNICATIONS AND NETWORKING CONFERENCE (UCOMMS) LA English DT Proceedings Paper CT 3rd IEEE Underwater Communications and Networking Conference (UComms) CY AUG 30-SEP 01, 2016 CL Lerici, ITALY SP IEEE, IEEE Ocean Engn Soc, Off Naval Res, Sci & Technol Seal, Allied Command Transformat, Off Naval Res Global, Kongsberg, Atlas Elektronik, Fondazione Cassa Risparmio Spezia, Carispezia ID SCATTERING ALBEDO; MODULATED LIGHT; WATER; PROPAGATION AB An elevated interest in underwater optical communications has resulted in the development of numerous theoretical models to predict both signal attenuation and bandwidth (pulse spreading) for underwater optical links. Few, if any, of these models have been experimentally validated, owing mostly to the difficulty in measuring temporal dispersion in these challenging environments. In this work, we begin to close the loop between theory and experiment, by validating a numerical Monte Carlo model against experimental data. Channel attenuation and frequency response is measured out to 1 GHz over similar to 20 attenuation lengths in a line-of-sight configuration. C1 [Cochenour, Brandon; Laux, Alan; Mullen, Linda] Naval Air Warfare Ctr, Patuxent River, MD 20670 USA. RP Cochenour, B (reprint author), Naval Air Warfare Ctr, Patuxent River, MD 20670 USA. EM brandon.cochenour@navy.mil NR 18 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-2696-8 PY 2016 PG 5 WC Computer Science, Hardware & Architecture; Telecommunications SC Computer Science; Telecommunications GA BG6FL UT WOS:000390229100016 ER PT J AU Rodriguez-Seda, EJ Severson, T Kiriakidis, K AF Rodriguez-Seda, Erick J. Severson, Trade Kiriakidis, Kiriakos GP IEEE TI Recovery after Attacks of Deception on Networked Control Systems SO 2016 RESILIENCE WEEK (RWS) LA English DT Proceedings Paper CT Resilience Week (RWS) CY AUG 16-18, 2016 CL Chicago, IL SP Idaho Natl Labs, Inst Elect & Elect Engineers, IEEE Ind Elect Soc ID AVERAGE CONSENSUS; TOPOLOGIES AB This paper follows on the authors' recent work that developed a network-wide attack detector and isolator. Having determined that the sensor of a regulated process is compromised, the problem shifts to maintaining the stability of the subject process and the integrity of the greater physical plant. First, measurements gathered at other processes, interconnected at the physical layer, provide estimates of the output of the process under attack through a bank of state observers. Next, a weighted consensus algorithm fuses all of these estimates into information that is actionable, being independent of the deceptive sensory data. The estimation error is shown to be sector-bounded. To address the resulting latency time in regulation, the authors employ a self-triggered control policy whose aim is to stabilize the attacked process. Furthermore, they test the proposed concept by simulation and demonstrate the safe operation of the physical plant. C1 [Rodriguez-Seda, Erick J.; Severson, Trade; Kiriakidis, Kiriakos] US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA. RP Rodriguez-Seda, EJ (reprint author), US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA. EM rodrigue@usna.edu; severson@usna.edu; kiriakid@usna.edu NR 18 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-2002-7 PY 2016 BP 109 EP 114 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BG6IA UT WOS:000390301800017 ER PT S AU Blais, C AF Blais, Curtis BE Hodicky, J TI Challenges in Representing Human-Robot Teams in Combat Simulations SO MODELLING AND SIMULATION FOR AUTONOMOUS SYSTEMS, MESAS 2016 SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 3rd International Workshop on Modelling and Simulation for Autonomous Systems (MESAS) CY JUN 15-16, 2016 CL Rome, ITALY SP IEEE Robot & Automat Soc, IEEE RAS Italian Chapter, IEEE Italy Sect Syst Council Chapter, IEEE RAS Multi Robot Syst Tech Comm, IEEE RAS Networked Robots Tech Comm, Movimento Italiano Modellazione & Simulazione, Simulat Team, Off Naval Res Sci & Technol, FABARIS DE Human-robot teams; Modeling; Simulation; Unmanned systems; Robotic forces; Autonomous systems; Combat modeling ID SYSTEMS AB Unmanned systems are changing the nature of future warfare. Combat simulations attempt to represent essential elements of warfare to support training, analysis, and testing. While combat simulations have rapidly incorporated representations of unmanned systems into their capabilities, little has been done to distinguish unmanned systems from human systems in these simulations. This is making it difficult to impossible to consider questions of future manned/unmanned system mix, levels of unmanned system autonomy required for most effective operational success, and other relevant questions. One might think that replacing humans with fully autonomous unmanned systems, such as in unmanned convoys, results in identical mission performance with the added benefit of a decrease in loss of human life. However, this is a naive line of reasoning when one considers that unmanned systems cannot react to the battlespace environment with the same level of flexibility as humans. Unfortunately, we have not yet been able to capture such distinctions in combat models. This paper discusses the challenges we face in developing improved models of human systems, robotic systems, and human-robot teams in combat simulations, with examples posed in the context of the Combined Arms Analysis Tool for the 21st Century (COMBATXXI), a discrete-event simulation developed and employed by the U.S. Army and U.S. Marine Corps to address analytical questions about future warfighting capabilities. C1 [Blais, Curtis] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Blais, C (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA. EM clblais@nps.edu NR 25 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-319-47605-6; 978-3-319-47604-9 J9 LECT NOTES COMPUT SC PY 2016 VL 9991 BP 3 EP 16 DI 10.1007/978-3-319-47605-6_1 PG 14 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BG6CF UT WOS:000389939300001 ER PT S AU Armstrong, JT Baines, EK Schmitt, HR Restaino, SR Clark, JH Benson, JA Hutter, DJ Zavala, RT van Belle, GT AF Armstrong, J. Thomas Baines, Ellyn K. Schmitt, Henrique R. Restaino, Sergio R. Clark, James H., III Benson, James A. Hutter, Donald J. Zavala, Robert T. van Belle, Gerard T. BE Malbet, F CreechEakman, MJ Tuthill, PG TI The Navy Precision Optical Interferometer: an update SO OPTICAL AND INFRARED INTERFEROMETRY AND IMAGING V SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optical and Infrared Interferometry and Imaging V CY JUN 27-JUL 01, 2016 CL Edinburgh, SCOTLAND SP SPIE DE optical interferometry; NPOI ID NPOI; COMBINER; ARRAY; DISK AB We describe the current status of the Navy Precision Optical Interferometer (NPOI), including developments since the last SPIE meeting. The NPOI group has added stations as far as 250m from the array center and added numerous infrastructure improvements. Science programs include stellar diameters and limb darkening, binary orbits, Be star disks, exoplanet host stars, and progress toward high-resolution stellar surface imaging. Technical and infrastructure projects include on-sky demonstrations of baseline bootstrapping with six array elements and of the VISION beam combiner, control system updates, integration of the long delay lines, and updated firmware for the Classic beam combiner. Our plans to add up to four 1.8 m telescopes are no longer viable, but we have recently acquired separate funding for adding three 1 m AO-equipped telescopes and an infrared beam combiner to the array. C1 [Armstrong, J. Thomas; Baines, Ellyn K.; Schmitt, Henrique R.; Restaino, Sergio R.; Clark, James H., III] US Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. [Benson, James A.; Hutter, Donald J.; Zavala, Robert T.] US Naval Observ, Flagstaff Stn, Flagstaff, AZ 86001 USA. [van Belle, Gerard T.] Lowell Observ, 1400 W Mars Hill Rd, Flagstaff, AZ 86001 USA. RP Armstrong, JT (reprint author), US Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. EM tom.armstrong@nrl.navy.mil NR 31 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 978-1-5106-0193-2 J9 PROC SPIE PY 2016 VL 9907 AR 990702 DI 10.1117/12.2235077 PG 8 WC Engineering, Aerospace; Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Engineering; Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BG6DE UT WOS:000390024400002 ER PT S AU Baines, EK Armstrong, JT Schmitt, HR Zavala, RT Benson, JA Niedzielski, A Zielinski, P Vanko, M Wolszczan, A AF Baines, Ellyn K. Armstrong, J. Thomas Schmitt, Henrique R. Zavala, R. T. Benson, James A. Niedzielski, Andrzej Zielinski, Pawel Vanko, Martin Wolszczan, Aleksander BE Malbet, F CreechEakman, MJ Tuthill, PG TI Observing the PTPS sample of evolved exoplanet host candidates using the NPOI SO OPTICAL AND INFRARED INTERFEROMETRY AND IMAGING V SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optical and Infrared Interferometry and Imaging V CY JUN 27-JUL 01, 2016 CL Edinburgh, SCOTLAND SP SPIE DE exoplanet host star candidates; optical interferometry; fundamental stellar parameters; angular diameter measurements; effective temperatures; exoplanet characterization ID STARS; INTERFEROMETRY; PARAMETERS AB We plan to measure the angular diameters of a sample of Penn State-Torun Planet Search (PTPS) giant exoplanet host star candidates using the Navy Precision Optical Interferometer. The radii of evolved giant stars obtained using spectroscopy are usually ill-defined because of the method's indirect nature and evolutionary model dependency. The star's radius is a critical parameter used to calculate luminosity and mass, which are often not well known for giant stars. Therefore, this problem also affects the orbital period, mass, and surface temperature of the planet. Our interferometric observations will significantly decrease the errors for these parameters. We present preliminary results from NPOI observations of six stars in the PTPS sample. C1 [Baines, Ellyn K.; Armstrong, J. Thomas; Schmitt, Henrique R.] Naval Res Lab, Washington, DC 20375 USA. [Zavala, R. T.; Benson, James A.] US Naval Observ, Flagstaff Stn, Flagstaff, AZ USA. [Niedzielski, Andrzej] Nicolaus Copernicus Univ, Torun, Poland. [Zielinski, Pawel] Masaryk Univ, Dept Theoret Phys & Astrophys, Brno, Czech Republic. [Vanko, Martin] Slovak Acad Sci, Astron Inst, Tatranska Lomnica, Slovakia. [Wolszczan, Aleksander] Penn State Univ, University Pk, PA 16802 USA. RP Baines, EK (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM ellyn.baines@nrl.navy.mil NR 39 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0193-2 J9 PROC SPIE PY 2016 VL 9907 AR 99073T DI 10.1117/12.2233159 PG 8 WC Engineering, Aerospace; Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Engineering; Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BG6DE UT WOS:000390024400098 ER PT S AU Jorgensen, AM Mozurkewich, D Armstrong, JT Schmitt, HR Baines, EK van Belle, GT AF Jorgensen, A. M. Mozurkewich, D. Armstrong, J. T. Schmitt, H. R. Baines, E. K. van Belle, G. T. BE Malbet, F CreechEakman, MJ Tuthill, PG TI Multi-baseline Chain Bootstrapping with New Classic at the NPOI SO OPTICAL AND INFRARED INTERFEROMETRY AND IMAGING V SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optical and Infrared Interferometry and Imaging V CY JUN 27-JUL 01, 2016 CL Edinburgh, SCOTLAND SP SPIE ID COHERENT INTEGRATION AB Imaging with optical interferometers requires fringe measurements on baseline long enough to resolve the target. These long baselines typically have low fringe contrast. Phasing them requires fringe tracking on shorter baselines which typically have greater fringe contrast and combining the fringe-tracking signals on the short baselines to phase the long baselines in a baseline bootstrapping configuration. On long resolving baselines coherent integration also becomes necessary in order to shorten the integration time. This paper addresses both the baseline bootstrapping and the coherent integration. The Navy Precision Optical Interferometer (NPOI) is laid out in a way which permits long-baseline phasing from shorter baselines in a multi-baseline scheme. The New Classic instrument for NPOI was designed specifically to implement the multi-baseline bootstrapping capability and multi-baseline observations can now be carried out routinely at the NPOI. This paper provides details about the bootstrapping scheme at NPOI and shows some initial results. We also discuss the bootstrapping error budget, describe our new Bayesian coherent integration algorithm and compare its performance to theory. C1 [Jorgensen, A. M.] New Mexico Inst Min & Technol, Socorro, NM 87801 USA. [Mozurkewich, D.] Seabrook Engn, Seabrook, MD USA. [Armstrong, J. T.; Schmitt, H. R.; Baines, E. K.] Naval Res Lab, Washington, DC 20375 USA. [van Belle, G. T.] Lowell Observ, 1400 W Mars Hill Rd, Flagstaff, AZ 86001 USA. RP Jorgensen, AM (reprint author), New Mexico Inst Min & Technol, Socorro, NM 87801 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0193-2 J9 PROC SPIE PY 2016 VL 9907 AR 99072C DI 10.1117/12.2234389 PG 7 WC Engineering, Aerospace; Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Engineering; Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BG6DE UT WOS:000390024400064 ER PT S AU Jorgensen, AM Schmitt, HR Armstrong, JT Baines, EK Hindsley, R Mozurkewich, D van Belle, GT AF Jorgensen, A. M. Schmitt, H. R. Armstrong, J. T. Baines, E. K. Hindsley, R. Mozurkewich, D. van Belle, G. T. BE Malbet, F CreechEakman, MJ Tuthill, PG TI The New Classic Instrument for the Navy Precision Optical Interferometer SO OPTICAL AND INFRARED INTERFEROMETRY AND IMAGING V SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optical and Infrared Interferometry and Imaging V CY JUN 27-JUL 01, 2016 CL Edinburgh, SCOTLAND SP SPIE AB The New Classic instrument was built as a electronics and computer upgrade to the existing Classic beam combiner at the Navy Precision Optical Interferometer (NPOI). The classic beam combiner is able to record 32 of 96 available channels and has a data throughput limitation which results in a low duty cycle. Additionally the computing power of the Classic system limited the amount of fringe tracking that was possible. The New Classic system implements a high-throughput data acquisition system which is capable of recording all 96 channels continuously. It also has a modern high-speed computer for data management and data processing. The computer is sufficiently powerful to implement more sophisticated fringe-tracking algorithms than the Classic system, including multi-baseline bootstrapping. In this paper we described the New Classic hardware and software, including the fringe-tracking algorithm, performance, and the user interface. We also show some initial results from the first 5-station, 4-baseline bootstrapping carried out in January 2015. C1 [Jorgensen, A. M.] New Mexico Inst Min & Technol, Socorro, NM 87801 USA. [Schmitt, H. R.; Armstrong, J. T.; Baines, E. K.; Hindsley, R.] Naval Res Lab, Washington, DC 20375 USA. [Mozurkewich, D.] Seabrook Engn, Seabrook, MD USA. [van Belle, G. T.] Lowell Observ, 1400 W Mars Hill Rd, Flagstaff, AZ 86001 USA. RP Jorgensen, AM (reprint author), New Mexico Inst Min & Technol, Socorro, NM 87801 USA. EM anders@nmt.edu NR 3 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0193-2 J9 PROC SPIE PY 2016 VL 9907 AR 990725 DI 10.1117/12.2232682 PG 8 WC Engineering, Aerospace; Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Engineering; Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BG6DE UT WOS:000390024400060 ER PT S AU Schmitt, HR Armstrong, JT Restaino, SR van Belle, G AF Schmitt, Henrique R. Armstrong, J. Thomas Restaino, Sergio R. van Belle, Gerard BE Malbet, F CreechEakman, MJ Tuthill, PG TI Monitoring a decade of seeing at the NPOI with quad cell measurements SO OPTICAL AND INFRARED INTERFEROMETRY AND IMAGING V SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optical and Infrared Interferometry and Imaging V CY JUN 27-JUL 01, 2016 CL Edinburgh, SCOTLAND SP SPIE DE seeing monitoring; facilities; NPOI; atmospheric turbulence AB As a part of regular operations, the Navy Precision Optical Interferometer (NPOI) uses Narrow Angle Trackers (NAT) for atmospheric tip-tilt correction. This correction is done using a quad cell array for each station, and is based on the error signals measured by these arrays. We compiled NPOI NAT jitter information for the period of 2005 to 2014. Here we investigate the correlation of the NAT jitter between different NPOI stations, and determine a correction for shot-noise induced jitter. We present initial results from the correlation between NAT jitter and quasi simultaneous seeing measurements done with the Lowell Observatory 31 '' telescope, separated by similar to 500 m. We also discuss some limitations of this technique and future improvements. C1 [Schmitt, Henrique R.; Armstrong, J. Thomas; Restaino, Sergio R.] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. [van Belle, Gerard] Lowell Observ, 1400 W Mars Hill Rd, Flagstaff, AZ 86001 USA. RP Schmitt, HR (reprint author), Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. EM hschmitt@ccs.nrl.navy.mil NR 3 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0193-2 J9 PROC SPIE PY 2016 VL 9907 AR 99071X DI 10.1117/12.2233088 PG 6 WC Engineering, Aerospace; Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Engineering; Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BG6DE UT WOS:000390024400053 ER PT J AU Sonchack, J Aviv, AJ Keller, E AF Sonchack, John Aviv, Adam J. Keller, Eric GP ACM TI Timing SDN Control Planes to Infer Network Configurations SO SDN-NFV SECURITY'16: PROCEEDINGS OF THE 2016 ACM INTERNATIONAL WORKSHOP ON SECURITY IN SOFTWARE DEFINED NETWORKS & NETWORK FUNCTION VIRTUALIZATION LA English DT Proceedings Paper CT ACM International Workshop on Security in Software Defined Networks and Network Function Virtualization (SDN-NFV) CY MAR 11, 2016 CL New Orleans, LA SP ACM SIGSAC, ACM AB In this paper, we study information leakage by control planes of Software Defined Networks. We find that the response time of an OpenFlow control plane depends on its workload, and we develop an inference attack that an adversary with control of a single host could use to learn about network configurations without needing to compromise any network infrastructure (i.e. switches or controller servers). We also demonstrate that our inference attack works on real OpenFlow hardware. To our knowledge, no previous work has evaluated OpenFlow inference attacks outside of simulation. C1 [Sonchack, John] Univ Penn, Philadelphia, PA 19104 USA. [Aviv, Adam J.] US Naval Acad, Annapolis, MD 21402 USA. [Keller, Eric] Univ Colorado, Boulder, CO 80309 USA. RP Sonchack, J (reprint author), Univ Penn, Philadelphia, PA 19104 USA. EM jsonch@cis.upenn.edu; aviv@usna.edu; eric.keller@colorado.edu NR 3 TC 0 Z9 0 U1 1 U2 1 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 978-1-4503-4078-6 PY 2016 BP 19 EP 22 DI 10.1145/2876019.2876030 PG 4 WC Computer Science, Cybernetics; Computer Science, Information Systems; Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BG6HA UT WOS:000390297100004 ER PT J AU Baxter, P Lemaignan, S Trafton, JG AF Baxter, Paul Lemaignan, Severin Trafton, J. Gregory GP ACM TI Cognitive Architectures for Social Human-Robot Interaction SO ELEVENTH ACM/IEEE INTERNATIONAL CONFERENCE ON HUMAN ROBOT INTERATION (HRI'16) LA English DT Proceedings Paper CT 11th ACM/IEEE International Conference on Human-Robot Interaction (HRI) CY MAR 07-10, 2016 CL Christchurch, NEW ZEALAND SP ACM, IEEE, ACM SIGCHI, ACM SIGAI, IEEE Robot & Automat Soc, HFES, AAAI, ACM SIGART DE Cognitive Architectures; Cognitive Robotics; Social Human-Robot Interaction AB Social HRI requires robots able to use appropriate, adaptive and contingent behaviours to form and maintain engaging social interactions with people. Cognitive Architectures emphasise a generality of mechanism and application, making them an ideal basis for such technical developments. Following the successful first workshop on Cognitive Architectures for HRI at the 2014 HRI conference, this second edition of the workshop focusses specifically on applications to social interaction. The full-day workshop is centred on participant contributions, and structured around a set of questions to provide a common basis of comparison between different assumptions, approaches, mechanisms, and architectures. These contributions will be used to support extensive and structured discussions, with the aim of facilitating the development and application of cognitive architectures to social HRI systems. By attending, we envisage that participants will gain insight into how the consideration of cognitive architectures complements the development of autonomous social robots. C1 [Baxter, Paul; Lemaignan, Severin] Univ Plymouth, Ctr Robot & Neural Syst, Plymouth PL4 8AA, Devon, England. [Trafton, J. Gregory] US Navy, Res Lab, Washington, DC 20375 USA. RP Baxter, P (reprint author), Univ Plymouth, Ctr Robot & Neural Syst, Plymouth PL4 8AA, Devon, England. EM paul.baxter@plymouth.ac.uk; severin.lemaignan@plymouth.ac.uk; greg.trafton@nrl.navy.mil NR 7 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 978-1-4673-8369-1 PY 2016 BP 579 EP 580 PG 2 WC Computer Science, Cybernetics; Robotics SC Computer Science; Robotics GA BG5YW UT WOS:000389809100140 ER PT J AU Rerkngamsanga, P Tummala, M Scrofani, J McEachen, J AF Rerkngamsanga, Pornrerk Tummala, Murali Scrofani, James McEachen, John GP IEEE TI Generalized Hough Transform For Object Classification in the Maritime Domain SO 2016 11TH SYSTEMS OF SYSTEM ENGINEERING CONFERENCE (SOSE), IEEE LA English DT Proceedings Paper CT 11th IEEE System of Systems Engineering Conference (SoSE) CY JUN 12-16, 2016 CL Kongsberg, NORWAY SP IEEE DE generalized Hough transform; neural networks; image classification; maritime domain; feature selection AB A generalized Hough transform-based classification scheme for an object-of-interest in maritime-domain images is proposed in this paper. The scheme explores the use of Hough features and neural networks to classify large sets of image objects collected in the maritime domain environment. The object edge points are extracted and used to generate the generalized Hough coordinate tables. The Hough coordinates are in turn reformatted to form Hough features maps. The coordinates of dominant peaks called Hough features are extracted and fed into a feed-forward, back-propagation neural network for classification. In this research, the scheme is tested using perfect geometric shapes as well as maritime-domain images of ships, aircraft, and clouds, and the classification results obtained are reported. C1 [Rerkngamsanga, Pornrerk] Royal Thai Navy, Naval Communicat & IT Headquarters, Bangkok 10600, Thailand. [Tummala, Murali; Scrofani, James; McEachen, John] Naval Postgraduate Sch, Dept Elect & Comp Engn, Monterey, CA USA. RP Rerkngamsanga, P (reprint author), Royal Thai Navy, Naval Communicat & IT Headquarters, Bangkok 10600, Thailand. EM usnaclass07@hotmail.com; mtummala@nps.edu; jwscrofa@nps.edu; mceachen@nps.edu NR 14 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8727-9 PY 2016 PG 6 WC Computer Science, Software Engineering; Engineering, Multidisciplinary; Operations Research & Management Science SC Computer Science; Engineering; Operations Research & Management Science GA BG5WB UT WOS:000389776900028 ER PT J AU Nguyen, GD Kompella, S Kam, C Wieselthier, JE Ephremides, A AF Nguyen, Gam D. Kompella, Sastry Kam, Clement Wieselthier, Jeffrey E. Ephremides, Anthony GP IEEE TI Wireless Link Connectivity under Hostile Interference: Nash and Stackelberg Equilibria SO 2016 14TH INTERNATIONAL SYMPOSIUM ON MODELING AND OPTIMIZATION IN MOBILE, AD HOC, AND WIRELESS NETWORKS (WIOPT) LA English DT Proceedings Paper CT 14th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) CY MAY 09-13, 2016 CL Tempe, AZ ID GAME AB We formulate the interaction between communication and hostile interference in wireless systems as a non-zero-sum two-player game. One player is the transmitter aiming to establish or maintain the communication to its receivers, and the other player is the interferer aiming to prevent or disrupt the communication. The strategy of the transmitter is a transmission power level, while the strategy of the interferer is an interfering power level. We provide closed-form equilibria for both Nash and Stackelberg models. We show that, while a Stackelberg equilibrium always exists, a Nash equilibrium exists only when the wireless channel is affected by fading. In addition, for the case of Rayleigh channel fading, we show that both players have the same power cost at Nash equilibrium. C1 [Nguyen, Gam D.; Kompella, Sastry; Kam, Clement] Naval Res Lab, Div Informat Technol, Washington, DC 20375 USA. [Wieselthier, Jeffrey E.] Wieselthier Res, Silver Spring, MD USA. [Ephremides, Anthony] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA. RP Nguyen, GD (reprint author), Naval Res Lab, Div Informat Technol, Washington, DC 20375 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 BN 978-1-5090-1311-1 PY 2016 BP 290 EP 297 PG 8 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG5PZ UT WOS:000389647700039 ER PT S AU Mastro, MA Wheeler, VD AF Mastro, Michael A. Wheeler, Virginia D. GP IEEE TI Ultra-Thin Absorber based on Phase Change Metamaterial Superlattice SO 2016 17TH INTERNATIONAL SYMPOSIUM ON ANTENNA TECHNOLOGY AND APPLIED ELECTROMAGNETICS (ANTEM) SE International Symposium on Antenna Technology and Applied Electromagnetics LA English DT Proceedings Paper CT 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) CY JUL 10-13, 2016 CL Montreal, CANADA SP Concordia Univ, IEEE, Univ Manitoba, APS, URSI DE metamaterial; vanadium dioxide; absorber; emitter; superlattice; infrared AB In this paper, a superlattice VO2/SiO2 metamaterial on a lossy substrate is designed to create a near perfect absorber with tunability across the infrared spectrum. We selected VO2 as it presents a dielectric to metal-like phase change slightly above room temperature. Additionally, the slightly lossy nature of high-temperature VO2 presents comparable and small components (real and imaginary) of the complex refractive index across portions of the visible and infrared. Coupled with a limited conductivity substrate, VO2 has been employed to create highly absorbing/emitting structures where the thickness of the VO2 is ultra-thin (t << lambda/4n). Nevertheless, metal-like VO2 does not possess comparable and small components of the complex refractive index across the entire infrared spectrum, which limits the universality of this ultra-thin VO2 absorber design. Here we employ an ultra-thin superlattice of VO2/SiO2 to create a composite metamaterial that is readily designed for high absorbance across the infrared spectrum. C1 [Mastro, Michael A.; Wheeler, Virginia D.] US Navy, Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA. RP Mastro, MA (reprint author), US Navy, Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA. EM michael.mastro@nrl.navy.mil NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2380-8616 BN 978-1-4673-8477-3 J9 INT SYMP ANT TECH PY 2016 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG5MJ UT WOS:000389539700113 ER PT S AU Cahay, M Zhu, W Fairchild, SB Jensen, KL Back, TC Gruen, G Murray, T Forbes, RG Harris, JR Shiffler, DA AF Cahay, M. Zhu, W. Fairchild, S. B. Jensen, K. L. Back, T. C. Gruen, G. Murray, T. Forbes, R. G. Harris, J. R. Shiffler, D. A. GP IEEE TI A platform to optimize the field emission properties of carbon-nanotube-based fibers SO 2016 29TH INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE (IVNC) SE International Vacuum Nanoelectronics Conference LA English DT Proceedings Paper CT 29th International Vacuum Nanoelectronics Conference (IVNC) CY JUL 11-15, 2016 CL Vancouver, CANADA SP IEEE, IEEE Electron Devices Soc, ZEISS, Modern Electron, Amer Vacuum Soci, Paul Scherrer Inst, Elect & Comp Engn, Univ British Columbia, Peter Wall Inst Adv Studies, Dept Elect & Comp Engn DE carbon nanotube fibers; field electron emission; self-heating effects; multiscale modeling; Nottingham effect AB Building on recent efforts [1-4] to characterize carbon nanotube fibers (CNFs) and electron emission [5,6] suitable for compact, high power, high frequency, vacuum electronic devices, this paper describes a proposed exhaustive approach towards optimizing CNF field emission (FE) properties. It outlines how a platform geared towards meaningful comparisons between different CNF-based emitters can be developed. The platform envisages an iterative procedure involving (a) the growth, processing, and functionalization of CNFs, (b) full investigation of the CNF material properties before and after FE diagnosis, and (c) multi-scale modeling of FE properties, including self-heating, shielding effects and beam characteristics in the CNFs and in the emitting carbon nanotubes (CNTs) at the fiber apexes. The modeling would be applicable to a wide variety of CNFs and wire-like sources, and would provide essential feedback to the growth, processing, and functionalization of CNFs, in order to optimize their FE properties (especially long-term stability, low noise, and maximum emission current, current density and brightness. C1 [Cahay, M.; Zhu, W.] Univ Cincinnati, Dept Elect Engn & Comp Syst, Cincinnati, OH 45221 USA. [Fairchild, S. B.] US Air Force, Mat & Mfg Directorate, Res Lab, Wright Patterson Afb, OH 45433 USA. [Jensen, K. L.] US Navy, Res Lab, Code 6364, Washington, DC 20375 USA. [Back, T. C.; Gruen, G.; Murray, T.] Univ Dayton, Res Inst, Dayton, OH 45469 USA. [Forbes, R. G.] Univ Surrey, Adv Technol Inst, Guildford GU2 7XH, Surrey, England. [Forbes, R. G.] Univ Surrey, Dept Elect & Elect Engn, Guildford GU2 7XH, Surrey, England. [Harris, J. R.; Shiffler, D. A.] US Air Force, Res Lab, Directed Energy Directorate, Albuquerque, NM 87117 USA. RP Cahay, M (reprint author), Univ Cincinnati, Dept Elect Engn & Comp Syst, Cincinnati, OH 45221 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 2164-2370 BN 978-1-5090-2419-3 J9 INT VACUUM NANOELECT PY 2016 PG 2 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology SC Engineering; Science & Technology - Other Topics GA BG5ML UT WOS:000389543500013 ER PT S AU Shaw, JL Champlain, JG Kong, BD Jensen, KL Boos, JB AF Shaw, Jonathan L. Champlain, James G. Kong, Byoung-Don Jensen, Kevin L. Boos, J. Brad GP IEEE TI Planar Graphene Vacuum Transistor Performance Potential SO 2016 29TH INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE (IVNC) SE International Vacuum Nanoelectronics Conference LA English DT Proceedings Paper CT 29th International Vacuum Nanoelectronics Conference (IVNC) CY JUL 11-15, 2016 CL Vancouver, CANADA SP IEEE, IEEE Electron Devices Soc, ZEISS, Modern Electron, Amer Vacuum Soci, Paul Scherrer Inst, Elect & Comp Engn, Univ British Columbia, Peter Wall Inst Adv Studies, Dept Elect & Comp Engn DE field emission; graphene; vacuum transistor AB We have considered the opportunities and challenges of fabricating a planar vacuum transistor using the edge of a single layer graphene sheet as a field emission electron source. The emission current needed to produce significant gain and power at mm-wave frequencies is roughly 100mA/mm. Simple arguments suggest such emission currents are possible. C1 [Shaw, Jonathan L.; Champlain, James G.; Kong, Byoung-Don; Jensen, Kevin L.; Boos, J. Brad] US Naval Res Lab, Electromagnet Technol Branch, Washington, DC 20375 USA. RP Shaw, JL (reprint author), US Naval Res Lab, Electromagnet Technol Branch, Washington, DC 20375 USA. EM jon.shaw@nrl.navy.mil NR 0 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2164-2370 BN 978-1-5090-2419-3 J9 INT VACUUM NANOELECT PY 2016 PG 2 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology SC Engineering; Science & Technology - Other Topics GA BG5ML UT WOS:000389543500009 ER PT S AU Tan, X Griggs, N Rumbach, P Go, DB Jensen, KL AF Tan, Xi Griggs, Nathaniel Rumbach, Paul Go, David B. Jensen, Kevin L. GP IEEE TI Resonant Tunneling Behavior In Ion-Enhanced Field and Thermo-Field Emission SO 2016 29TH INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE (IVNC) SE International Vacuum Nanoelectronics Conference LA English DT Proceedings Paper CT 29th International Vacuum Nanoelectronics Conference (IVNC) CY JUL 11-15, 2016 CL Vancouver, CANADA SP IEEE, IEEE Electron Devices Soc, ZEISS, Modern Electron, Amer Vacuum Soci, Paul Scherrer Inst, Elect & Comp Engn, Univ British Columbia, Peter Wall Inst Adv Studies, Dept Elect & Comp Engn DE field emission; resonant tunneling AB Under a high electrical field, field emission current may be significantly enhanced by positive ions very close to the cathode surface. In addition to distorting the potential field to both lower and thin the potential barrier, the ion can also induce resonant tunneling, which can be a major factor in the emission current. In this study, resonant tunneling behavior has been investigated using a simple model by solving the 1D Schrodinger's equation in the presence of an ion approaching the surface. Analysis shows that as the ion approaches the surface, resonant states move from lower to higher energies. Further, as the electric field increases, the resonant states move from higher to lower energies. Resonant contributions can be dominant under high applied field (similar to 0.5-3 V/nm) when the ion is close to the surface (similar to 0.5-3 nm). Under such conditions the resonances are located near the energy region that has highest differential emission current, which is proportional to the product of the supply function and the transmission probability. The results of this study suggest that it may be possible to control (maximize/minimize) the emission current by matching/ mismatching the supply function to the resonant states, which can be applied to various electron emission technologies. C1 [Tan, Xi; Griggs, Nathaniel; Rumbach, Paul; Go, David B.] Univ Notre Dame, Dept Aerosp & Mech Engn, Notre Dame, IN 46556 USA. [Jensen, Kevin L.] Naval Res Lab, Elect & Opt Mat & Devices, Washington, DC 20375 USA. RP Tan, X (reprint author), Univ Notre Dame, Dept Aerosp & Mech Engn, Notre Dame, IN 46556 USA. EM xtan1@nd.edu NR 9 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2164-2370 BN 978-1-5090-2419-3 J9 INT VACUUM NANOELECT PY 2016 PG 2 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology SC Engineering; Science & Technology - Other Topics GA BG5ML UT WOS:000389543500049 ER PT J AU Daniels, KM Jadidi, MM Sushkov, AB Boyd, AK Nath, A Drew, HD Murphy, TE Myers-Ward, RL Gaskill, DK AF Daniels, K. M. Jadidi, M. M. Sushkov, A. B. Boyd, A. K. Nath, A. Drew, H. D. Murphy, T. E. Myers-Ward, R. L. Gaskill, D. K. GP IEEE TI Narrow Terahertz Plasmon Resonance of Quasi-freestanding Bilayer Epitaxial Graphene SO 2016 74TH ANNUAL DEVICE RESEARCH CONFERENCE (DRC) LA English DT Meeting Abstract CT 74th Annual Device Research Conference (DRC) CY JUN 19-22, 2016 CL University of Delaware, Newark, DE SP IEEE, IEEE Electron Devices Soc HO University of Delaware C1 [Daniels, K. M.] NRC Postdoctoral Fellow Residing NRL, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Jadidi, M. M.; Sushkov, A. B.; Drew, H. D.; Murphy, T. E.] Univ Maryland, College Pk, MD 20375 USA. [Nath, A.] George Mason Univ, 4400 Univ Dr, Fairfax, VA 22030 USA. [Myers-Ward, R. L.; Gaskill, D. K.] US Naval Res Lab, 4555 OverlookAve SW, Washington, DC 20375 USA. EM kevin.dantels.ctrl@nrl.navv.mil NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-2827-6 PY 2016 PG 2 GA BG5MA UT WOS:000389535400029 ER PT J AU Verma, A Song, B Meyer, D Downey, B Wheeler, V Xing, HL Jena, D AF Verma, Amit Song, Bo Meyer, David Downey, Brian Wheeler, Virginia Xing, Huili (Grace) Jena, Debdeep GP IEEE TI Demonstration of GaN HyperFETs with ALD VO2 SO 2016 74TH ANNUAL DEVICE RESEARCH CONFERENCE (DRC) LA English DT Meeting Abstract CT 74th Annual Device Research Conference (DRC) CY JUN 19-22, 2016 CL University of Delaware, Newark, DE SP IEEE, IEEE Electron Devices Soc HO University of Delaware ID TRANSISTORS; TRANSITION C1 [Verma, Amit; Song, Bo; Xing, Huili (Grace); Jena, Debdeep] Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA. [Verma, Amit; Song, Bo; Xing, Huili (Grace); Jena, Debdeep] Cornell Univ, Mat Sci & Engn, Ithaca, NY 14853 USA. [Xing, Huili (Grace); Jena, Debdeep] Univ Notre Dame, Dept Elect Engn, Notre Dame, IN 46556 USA. [Meyer, David; Downey, Brian; Wheeler, Virginia] US Naval Res Lab, Washington, DC 20375 USA. EM averma@cornell.edu; djena@cornell.edu NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-2827-6 PY 2016 PG 2 GA BG5MA UT WOS:000389535400008 ER PT J AU Vaneman, WK AF Vaneman, Warren K. GP IEEE TI Enhancing Model-Based Systems Engineering with the Lifecycle Modeling Language SO 2016 ANNUAL IEEE SYSTEMS CONFERENCE (SYSCON) LA English DT Proceedings Paper CT 10th Annual IEEE International Systems Conference (SysCon) CY APR 18-21, 2016 CL Orlando, FL SP IEEE, IEEE Syst Council DE Model-Based Systems Engineering; Systems Modeling Language (SysML); Lifecycle Modeling Language (LML) AB As systems become more complex, the systems engineering community must find new and more efficient ways of dealing with complexity throughout the system's lifecycle. Model-Based Systems Engineering (MBSE) has proven to be effective at managing complexity through the development of systems in a virtual environment. Several languages have been developed in the spirit of MBSE; however, these languages often do not include the full spectrum of information needed for holistic system solutions. The Lifecycle Modeling Language (LML) has been developed to provide extensible language that contains both visualization models and an ontology. When LML is coupled with the Systems Modeling Language (SysML), the result is a modeling constructs that better supports systems engineering processes across the entire spectrum of lifecycle concerns. This coupling will not only be beneficial today, but could serve as a catalyst for a future MBSE environment. C1 [Vaneman, Warren K.] Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA. RP Vaneman, WK (reprint author), Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA. NR 7 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9519-9 PY 2016 BP 451 EP 457 PG 7 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG5PW UT WOS:000389647000069 ER PT J AU Vaneman, WK AF Vaneman, Warren K. GP IEEE TI The System of Systems Engineering and Integration "Vee" Model SO 2016 ANNUAL IEEE SYSTEMS CONFERENCE (SYSCON) LA English DT Proceedings Paper CT 10th Annual IEEE International Systems Conference (SysCon) CY APR 18-21, 2016 CL Orlando, FL SP IEEE, IEEE Syst Council DE System of Systems; System of Systems Engineering and Integration; Systems Engineering "Vee" Model AB In the twenty-first century, mission success will require unprecedented interoperability among disparate constituent systems resulting in a System of Systems (SoS). Unlike traditional systems engineering where systems are created based on a set of user needs, a SoS is composed of multiple constituent systems, at various stages within their lifecycles (i.e. new start systems, systems in-development, legacy systems), to satisfy needed mission capabilities. System of Systems Engineering has been exploring appropriate methods and processes for almost two decades. This paper takes the discussion further by introducing a System of Systems Engineering and Integration (SOSE&I) methodology. SoSE&I is the planning, analyzing, and integrating of constituent systems into an SoS capability greater than the sum of those individual systems. The SoSE&I "Vee" process model is introduced and discusses how it is used to engineer the SoS throughout its lifecycle to increase systems integration and interoperability, and directly impact the operational success. C1 [Vaneman, Warren K.] Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA. RP Vaneman, WK (reprint author), Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA. NR 10 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9519-9 PY 2016 BP 566 EP 572 PG 7 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG5PW UT WOS:000389647000087 ER PT S AU Yanar, B Su, WL AF Yanar, Burak Su, Weilian GP IEEE TI Dynamic Extension of Network for Collecting Data from Multiple Ground Nodes SO 2016 IEEE 21ST INTERNATIONAL CONFERENCE ON EMERGING TECHNOLOGIES AND FACTORY AUTOMATION (ETFA) SE IEEE International Conference on Emerging Technologies and Factory Automation-ETFA LA English DT Proceedings Paper CT 21st IEEE International Conference on Emerging Technologies and Factory Automation (ETFA) CY SEP 06-09, 2016 CL OWL Univ Appl Sci, Fraunhofer IOSB INA, Berlin, GERMANY SP IEEE, IES, OWL Univ Appl Sci, Inst Ind Informat Technologies HO OWL Univ Appl Sci, Fraunhofer IOSB INA DE Ad-hoc; UAV; directed antenna; multi hop AB Often times there is a need to do remote monitoring. The remote sites may be located far away; thus, traditional connectivity, such as fiber, is not possible. This paper proposes to use unmanned aerial vehicles (UAVs) to provide connectivity to ground sensor clusters on a suburban industrial area. Very small, commercial scale UAVs can be used to monitor a bunch of ground sensor nodes without the dependency of a physical connection to the remote sites. This technique can be used to create modular sensor grids with very low cost. The proposed research is to define the best ad-hoc network parameters for supporting the maximum number of programmable logic controllers (PLC) from a reasonable altitude using very small size, commercial UAVs. As a result, using TEE 802.11 with Dynamic MANET on Demand (DYMO) routing protocol can support five PLC clusters, which have 10 nodes each, from a 100-meters altitude with less than 350milliseconds delay. C1 [Yanar, Burak; Su, Weilian] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA. RP Yanar, B (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA. EM byanar@nps.edu; weilian@nps.edu NR 11 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1946-0740 BN 978-1-5090-1314-2 J9 IEEE INT C EMERG PY 2016 PG 6 WC Automation & Control Systems SC Automation & Control Systems GA BG5LB UT WOS:000389524200069 ER PT S AU Ge, HY Kirsteins, IP AF Ge, Hongya Kirsteins, Ivars P. GP IEEE TI LUCKY RANGING WITH TOWED ARRAYS IN UNDERWATER ENVIRONMENTS SUBJECT TO NON-STATIONARY SPATIAL COHERENCE LOSS SO 2016 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING PROCEEDINGS SE International Conference on Acoustics Speech and Signal Processing ICASSP LA English DT Proceedings Paper CT IEEE International Conference on Acoustics, Speech, and Signal Processing CY MAR 20-25, 2016 CL Shanghai, PEOPLES R CHINA SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Signal Proc Soc DE Array Signal Processing; Passive Ranging; Spatial Coherence; Passive Sonar; Underwater Acoustics ID OF-ARRIVAL ESTIMATION; WAVE-FRONTS AB This paper presents our new results on lucky ranging utilizing a towed array in environments subject to unknown fluctuating spatial coherence losses. We derive a lucky maximum likelihood range estimator based on the probabilistic assumption that each collected data snapshot is either coherent or purely incoherent with some probability. Our lucky range estimator can be interpreted as first ranking the coherence quality of each data snapshot according to an array gain-like quantity during the parameter search, followed by accumulation of likelihood surfaces out of data snapshots of high spatial-coherence. This effectively avoids the wash-out or the smearing results encountered in the traditional processing procedures of utilizing a long integration time without a prior screening for the data spatial-coherence. An important advantage of the lucky approach is that it makes no prior assumptions about the signal spatial coherence loss model. This estimator has greatly improved robustness over the conventional estimator when coherence is low and time-varying. C1 [Ge, Hongya] New Jersey Inst Technol, Dept ECE, Newark, NJ 07201 USA. [Kirsteins, Ivars P.] Naval Undersea Warfare Ctr, Newport, RI 02841 USA. RP Ge, HY (reprint author), New Jersey Inst Technol, Dept ECE, Newark, NJ 07201 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1520-6149 BN 978-1-4799-9988-0 J9 INT CONF ACOUST SPEE PY 2016 BP 3156 EP 3160 PG 5 WC Acoustics; Engineering, Electrical & Electronic SC Acoustics; Engineering GA BG3XQ UT WOS:000388373403059 ER PT S AU Wagner, KT Doroslovacki, MI AF Wagner, Kevin T. Doroslovacki, Milos I. GP IEEE TI DISTRIBUTED LMS ESTIMATION OF SCALED AND DELAYED IMPULSE RESPONSES SO 2016 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING PROCEEDINGS SE International Conference on Acoustics Speech and Signal Processing ICASSP LA English DT Proceedings Paper CT IEEE International Conference on Acoustics, Speech, and Signal Processing CY MAR 20-25, 2016 CL Shanghai, PEOPLES R CHINA SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Signal Proc Soc DE Adaptive filtering; convergence; distributed algorithms; least mean square algorithms ID STRATEGIES; ADAPTATION; NETWORKS AB The ability to perform distributed estimation across a neighborhood of nodes when the impulse responses present at each node are related by an unknown time delay and scaling is presented in this work. The time delay estimation is performed by correlating estimates of the unknown impulse response from neighboring nodes. The estimated time delay corresponds to the shift associated with the peak of this correlation. Next combination of neighboring nodes is performed by reweighting node estimates. This reweighting factor is calculated by forming the ratio of the norm of estimated impulse response in a reference node with the norm of the estimated impulse response in a neighboring node. Simulation results demonstrating improved convergence performance for a cooperative network when estimating the time delay and amplitude weights relative to the performance of a non-cooperative network are depicted. C1 [Wagner, Kevin T.] Naval Res Lab, Div Radar, Washington, DC 20375 USA. [Doroslovacki, Milos I.] George Washington Univ, Dept Elect & Comp Engn, Washington, DC 20052 USA. RP Wagner, KT (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1520-6149 BN 978-1-4799-9988-0 J9 INT CONF ACOUST SPEE PY 2016 BP 4154 EP 4158 PG 5 WC Acoustics; Engineering, Electrical & Electronic SC Acoustics; Engineering GA BG3XQ UT WOS:000388373404060 ER PT J AU Berbekar, E Harms, F Leitl, B Boris, J Moses, A Obenschain, K Patnaik, G Fischer, S Storm, K AF Berbekar, E. Harms, F. Leitl, B. Boris, J. Moses, A. Obenschain, K. Patnaik, G. Fischer, S. Storm, K. GP IEEE TI Hazmat Dispersion Modeling in Support of Urban Emergency Response for the Fire Brigade in Hamburg, Germany SO 2016 IEEE SYMPOSIUM ON TECHNOLOGIES FOR HOMELAND SECURITY (HST) LA English DT Proceedings Paper CT IEEE Symposium on Technologies for Homeland Security (HST) CY MAY 10-11, 2016 CL Waltham, MA SP IEEE DE Emergency response; dispersion modeling; urban CFD; accidental releases; emergency response tool; urban environment AB First responders need a more or less instant estimate of danger zones resulting from accidental airborne releases of hazardous materials in order to take immediate action, to coordinate rescue teams and to protect the population and critical infrastructure. To fulfill the need for efficient access to reliable results in a first responders environment while maintaining sufficient dispersion modeling accuracy, pre-computed high-resolution CFD modeling can be combined with 'physical data reduction' in an emergency assessment tool. This approach, specific to the geometry of the city of Hamburg, has been adopted by the Fire Brigade in Hamburg, Germany. C1 [Berbekar, E.; Harms, F.; Leitl, B.] Univ Hamburg, Environm Wind Tunnel Lab, Inst Meteorol, Hamburg, Germany. [Boris, J.; Moses, A.; Obenschain, K.; Patnaik, G.] Naval Res Lab, Labs Computat Phys & Fluid Dynam, Washington, DC 20375 USA. [Fischer, S.] Dept Interior & Sports, Directorate Publ Secur Fire Protect & Disaster Co, Hamburg, Germany. [Storm, K.] Hamburg Fire Brigade, Analyt Task Force Lead, Strateg Operat Planning Sect, Hamburg, Germany. RP Berbekar, E (reprint author), Univ Hamburg, Environm Wind Tunnel Lab, Inst Meteorol, Hamburg, Germany. 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 BN 978-1-5090-0770-7 PY 2016 PG 6 WC Computer Science, Information Systems; Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BG5NO UT WOS:000389584500068 ER PT S AU Chatterjee, D Rao, SM Kluskens, MS AF Chatterjee, D. Rao, S. M. Kluskens, M. S. GP IEEE TI Some New Techniques for Evaluating Sommerfeld Integrals for Microstrip Antenna Analysis SO 2016 URSI INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC THEORY (EMTS) SE URSI International Symposium on Electromagnetic Theory LA English DT Proceedings Paper CT URSI International Symposium on Electromagnetic Theory (EMTS) CY AUG 14-18, 2016 CL Espoo, FINLAND SP URSI ID DOMAIN GREENS-FUNCTIONS; MULTILAYERED MEDIA; EFFICIENT COMPUTATION; LAYERED MEDIUM; COMPONENTS; ACCURATE; SURFACE; MODES AB A new transformation for evaluating Sommerfeld integrals is derived here when the path is deformed in the upper half of the complex plane. This transformation has the feature that as the lateral separation rho -> infinity, the argument of the Bessel function diminishes. It is argued that this approach shall facilitate much efficient calculation of Sommerfeld integrals. C1 [Chatterjee, D.] Univ Missouri, CSEE Dept, Kansas City, MO 64110 USA. [Rao, S. M.; Kluskens, M. S.] US Navy, Res Lab, Div Radar, Washington, DC 20375 USA. RP Chatterjee, D (reprint author), Univ Missouri, CSEE Dept, Kansas City, MO 64110 USA. EM chatd@umkc.edu 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 2163-405X BN 978-1-5090-2502-2 J9 URSI INT SYM ELECT PY 2016 BP 335 EP 337 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA BG5UN UT WOS:000389770800096 ER PT S AU Helle, MH Gordon, DF Kaganovich, D Zingale, A Ting, A AF Helle, Michael H. Gordon, Daniel F. Kaganovich, Dmitri Zingale, Anthony Ting, Antonio BE Hogan, MJ TI Accelerated Protons from Near Critical Density Gaseous Targets SO ADVANCED ACCELERATOR CONCEPTS, (AAC 2014) SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Advanced Accelerator Concepts Workshop CY JUL 13-18, 2014 CL San Jose, CA SP U S Dept Energy, Off High Energy Phys, Bergoz Instrumentat, Coherent, Radiabeam Technologies, THORLABS, Continuum, Amplitude Technologies, U S Dept Energy, Imagine Opt, Spectra Phys, Northrop Grumman, LEO ID BEAMS AB We report the generation of energetic protons from the interaction of an intense laser pulse with a near critical plasma density gaseous target. The target was formed by tailoring the gas flow of a hypersonic jet with externally generated hydrodynamic shocks. Configurations utilizing either a single or two colliding shocks were investigated. A 500mJ, 50 fs pulse from a Ti: Sapphire laser system was able to generate protons beams with energies < 2MeV from a 70 mu m thick, 3x10(20) cm(-3) hydrogen gas target. These results are consistent with simulations. Simulations indicate that acceleration is due to electrostatic fields as well as inductive fields produced by a strong azimuthal magnetic field. C1 [Helle, Michael H.; Ting, Antonio] US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Zingale, Anthony] RSI Inc, 4325-B Forbes Blvd, Lanham, MD 20706 USA. RP Helle, MH (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM mike.helle@nrl.navy.mil NR 8 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 978-0-7354-1439-6 J9 AIP CONF PROC PY 2016 VL 1777 AR UNSP 090004 DI 10.1063/1.4965679 PG 5 WC Physics, Applied; Physics, Particles & Fields SC Physics GA BG5JH UT WOS:000389510300090 ER PT S AU Jing, CG Konecny, R Gold, SH AF Jing, Chunguang Konecny, R. Gold, Steven H. BE Hogan, MJ TI Experimental Study of Multipactor Suppression In Externally Powered Dielectric Accelerating Structures SO ADVANCED ACCELERATOR CONCEPTS, (AAC 2014) SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Advanced Accelerator Concepts Workshop CY JUL 13-18, 2014 CL San Jose, CA SP U S Dept Energy, Off High Energy Phys, Bergoz Instrumentat, Coherent, Radiabeam Technologies, THORLABS, Continuum, Amplitude Technologies, U S Dept Energy, Imagine Opt, Spectra Phys, Northrop Grumman, LEO DE Dielectric accelerator; multipactor AB Multipactor is the major issue limiting the gradient of Dielectric-Loaded Accelerating (DLA) structures. Theoretical models predict that a solenoidal magnetic field applied to DLA structures may completely supress the multipactor. To test this approach, two DLA structures were tested and strong multipactor suppression was observed. C1 [Jing, Chunguang; Konecny, R.] Euclid Techlabs LLC, Solon, OH 44139 USA. [Jing, Chunguang; Konecny, R.] Argonne Natl Lab, Div High Energy Phys, Lemont, IL 60439 USA. [Gold, Steven H.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. RP Jing, CG (reprint author), Euclid Techlabs LLC, Solon, OH 44139 USA.; Jing, CG (reprint author), Argonne Natl Lab, Div High Energy Phys, Lemont, IL 60439 USA. EM jingchg@anl.gov NR 6 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 978-0-7354-1439-6 J9 AIP CONF PROC PY 2016 VL 1777 AR UNSP 060004 DI 10.1063/1.4965633 PG 4 WC Physics, Applied; Physics, Particles & Fields SC Physics GA BG5JH UT WOS:000389510300044 ER PT S AU Palastro, J Gordon, D Hafizi, B Penano, J Helle, M Ting, A Kaganovich, D AF Palastro, John Gordon, Daniel Hafizi, Bahman Penano, Joe Helle, Michael Ting, Antonio Kaganovich, Dmitri BE Hogan, MJ TI A Nonlinear Plasma Retroreflector for Single Pulse Compton Backscattering SO ADVANCED ACCELERATOR CONCEPTS, (AAC 2014) SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Advanced Accelerator Concepts Workshop CY JUL 13-18, 2014 CL San Jose, CA SP U S Dept Energy, Off High Energy Phys, Bergoz Instrumentat, Coherent, Radiabeam Technologies, THORLABS, Continuum, Amplitude Technologies, U S Dept Energy, Imagine Opt, Spectra Phys, Northrop Grumman, LEO ID LASER; SCATTERING; BEAMS AB An ultrashort laser pulse incident on a sharp plasma gradient undergoes a partial reversal in Poynting flux. The resulting counterpropagating field can Compton backscatter from electrons accelerated in the incident pulse's wakefield. We examine the reversal mechanism and properties of the counterpropagating field to optimize the Compton scattered radiation. C1 [Palastro, John] Icarus Res, POB 30780, Bethesda, MD 20824 USA. [Gordon, Daniel; Hafizi, Bahman; Penano, Joe; Helle, Michael; Ting, Antonio; Kaganovich, Dmitri] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. RP Palastro, J (reprint author), Icarus Res, POB 30780, Bethesda, MD 20824 USA. EM john.palastro.ctr@nrl.navy.mil NR 15 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 978-0-7354-1439-6 J9 AIP CONF PROC PY 2016 VL 1777 AR UNSP 080010 DI 10.1063/1.4965667 PG 5 WC Physics, Applied; Physics, Particles & Fields SC Physics GA BG5JH UT WOS:000389510300078 ER PT S AU Ting, A Kaganovich, D Hafizi, B Palastro, J Helle, M Gordon, D Penano, J Seely, J AF Ting, Antonio Kaganovich, Dmitri Hafizi, Bahman Palastro, John Helle, Michael Gordon, Daniel Penano, Joseph Seely, John BE Hogan, MJ TI Prospects of Coherent Compton Backscattered X-rays from Self-Generated Wiggler in a Laser Wakefield Accelerator SO ADVANCED ACCELERATOR CONCEPTS, (AAC 2014) SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Advanced Accelerator Concepts Workshop CY JUL 13-18, 2014 CL San Jose, CA SP U S Dept Energy, Off High Energy Phys, Bergoz Instrumentat, Coherent, Radiabeam Technologies, THORLABS, Continuum, Amplitude Technologies, U S Dept Energy, Imagine Opt, Spectra Phys, Northrop Grumman, LEO ID FREE-ELECTRON-LASER; SYNCHROTRON SOURCE; ENERGY SPREAD; GAIN; EMITTANCE; REGIME; PULSES; PLASMA AB A unique Compton backscattering configuration for generating monochromatic, short pulse, and potentially coherent x-rays in a Laser Wakefield Accelerator (LWFA) is being studied at the Naval Research Laboratory. Reflection mechanisms such as stimulated Raman scattering and shock-created density gradients in a plasma can generate the required backward-travelling laser pulse directly from the same laser pulse used in the LWFA, i.e., the high energy electron beam and the counter-propagating photon beam are both self-generated by an ultrashort laser pulse in plasma. The automatic alignment of the counter-propagating electrons and photons together with the extended interaction distance and tightly guided beam sizes in a LWFA can lead to a high-gain situation for the Doppler upshifted forward propagating x-rays. Possibilities for exponential gain to achieve coherent generation of the x-rays are investigated. Using 1D warm beam FEL analysis, millimeter gain lengths could be obtained for optimistic energy spread and emittance parameters. C1 [Ting, Antonio; Kaganovich, Dmitri; Hafizi, Bahman; Helle, Michael; Gordon, Daniel; Penano, Joseph] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Palastro, John] Icarus Res Inc, POB 30780, Bethesda, MD 20824 USA. [Seely, John] Artep Inc, 2922 Excelsior Springs Ct, Ellicott City, MD 21042 USA. RP Ting, A (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. EM ting@nrl.navy.mil NR 22 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 978-0-7354-1439-6 J9 AIP CONF PROC PY 2016 VL 1777 AR UNSP 080018 DI 10.1063/1.4965675 PG 5 WC Physics, Applied; Physics, Particles & Fields SC Physics GA BG5JH UT WOS:000389510300086 ER PT S AU Floyd, MW Aha, DW AF Floyd, Michael W. Aha, David W. BE Goel, A DiazAgudo, MB RothBerghofer, T TI Incorporating Transparency During Trust-Guided Behavior Adaptation SO CASE-BASED REASONING RESEARCH AND DEVELOPMENT, ICCBR 2016 SE Lecture Notes in Artificial Intelligence LA English DT Proceedings Paper CT 24th International Conference on Case-Based Reasoning Research and Development (ICCBR) CY OCT 31-NOV 02, 2016 CL Atlanta, GA SP US NSF, Knexus Corp, Springer, Georgia Tech GVU Res Ctr DE Inverse trust; Behavior adaptation; Explanation; Transparency ID RECOMMENDER SYSTEMS; EXPLANATIONS; PROVENANCE AB An important consideration in human-robot teams is ensuring that the robot is trusted by its teammates. Without adequate trust, the robot may be underutilized or disused, potentially exposing human teammates to dangerous situations. We have previously investigated an agent that can assess its own trustworthiness and adapt its behavior accordingly. In this paper we extend our work by adding a transparency layer that allows the agent to explain why it adapted its behavior. The agent uses explanations based on explicit feedback received from an operator. This allows it to provide simple, concise, and understandable explanations. We evaluate our system on scenarios from a simulated robotics domain by demonstrating that the agent can provide explanations that closely align with an operator's feedback. C1 [Floyd, Michael W.] Knexus Res Corp, Springfield, VA 22153 USA. [Aha, David W.] Naval Res Lab, Navy Ctr Appl Res AI, Code 5514, Washington, DC 20375 USA. RP Floyd, MW (reprint author), Knexus Res Corp, Springfield, VA 22153 USA. EM michael.floyd@knexusresearch.com; david.aha@nrl.navy.mil NR 24 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-319-47096-2; 978-3-319-47095-5 J9 LECT NOTES ARTIF INT PY 2016 VL 9969 BP 124 EP 138 DI 10.1007/978-3-319-47096-2_9 PG 15 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems SC Computer Science GA BG5WR UT WOS:000389799100009 ER PT S AU Kristan, M Leonardis, A Matas, J Felsberg, M Pflugfelder, R Cehovin, L Vojir, T Hager, G Lukezic, A Fernandez, G Gupta, A Petrosino, A Memarmoghadam, A Garcia-Martin, A Montero, AS Vedaldi, A Robinson, A Ma, AJ Varfolomieiev, A Alatan, A Erdem, A Ghanem, B Liu, B Han, BY Martinez, B Chang, CM Xu, CS Sun, C Kim, DJ Chen, DP Du, DW Mishra, D Yeung, DY Gundogdu, E Erdem, E Khan, F Porikli, F Zhao, F Bunyak, F Battistone, F Zhu, G Roffo, G Subrahmanyam, GRKS Bastos, G Seetharaman, G Medeiros, H Li, HD Qi, HG Bischof, H Possegger, H Lu, HC Lee, HM Nam, H Chang, HJ Drummond, I Valmadre, J Jeong, JC Cho, JI Lee, JY Zhu, JK Feng, JY Gao, J Choi, JY Xiao, JJ Kim, JW Jeong, J Henriques, JF Lang, JC Choi, J Martinez, JM Xing, JL Gao, JY Palaniappan, K Lebeda, K Gao, K Mikolajczyk, K Qin, L Wang, LJ Wen, LY Bertinetto, L Rapuru, MK Poostchi, M Maresca, M Danelljan, M Mueller, M Zhang, MD Arens, M Valstar, M Tang, M Baek, M Khan, MH Wang, NY Fan, NN Al-Shakarji, N Miksik, O Akin, O Moallem, P Senna, P Torr, PHS Yuen, PC Huang, QM Martin-Nieto, R Pelapur, R Bowden, R Laganiere, R Stolkin, R Walsh, R Krah, SB Li, SK Zhang, SP Yao, SZ Hadfield, S Melzi, S Lyu, SW Li, SY Becker, S Golodetz, S Kakanuru, S Choi, S Hu, T Mauthner, T Zhang, T Pridmore, T Santopietro, V Hu, WM Li, WB Hubner, W Lan, XY Wang, XM Li, X Li, Y Demiris, Y Wang, YF Qi, YK Yuan, ZJ Cai, ZX Xu, Z He, ZY Chi, ZZ AF Kristan, Matej Leonardis, Ales Matas, Jiri Felsberg, Michael Pflugfelder, Roman Cehovin, Luka Vojir, Tomas Hager, Gustav Lukezic, Alan Fernandez, Gustavo Gupta, Abhinav Petrosino, Alfredo Memarmoghadam, Alireza Garcia-Martin, Alvaro Montero, Andres Solis Vedaldi, Andrea Robinson, Andreas Ma, Andy J. Varfolomieiev, Anton Alatan, Aydin Erdem, Aykut Ghanem, Bernard Liu, Bin Han, Bohyung Martinez, Brais Chang, Chang-Ming Xu, Changsheng Sun, Chong Kim, Daijin Chen, Dapeng Du, Dawei Mishra, Deepak Yeung, Dit-Yan Gundogdu, Erhan Erdem, Erkut Khan, Fahad Porikli, Fatih Zhao, Fei Bunyak, Filiz Battistone, Francesco Zhu, Gao Roffo, Giorgio Subrahmanyam, Gorthi R. K. Sai Bastos, Guilherme Seetharaman, Guna Medeiros, Henry Li, Hongdong Qi, Honggang Bischof, Horst Possegger, Horst Lu, Huchuan Lee, Hyemin Nam, Hyeonseob Chang, Hyung Jin Drummond, Isabela Valmadre, Jack Jeong, Jae-chan Cho, Jae-il Lee, Jae-Yeong Zhu, Jianke Feng, Jiayi Gao, Jin Choi, Jin Young Xiao, Jingjing Kim, Ji-Wan Jeong, Jiyeoup Henriques, Joao F. Lang, Jochen Choi, Jongwon Martinez, Jose M. Xing, Junliang Gao, Junyu Palaniappan, Kannappan Lebeda, Karel Gao, Ke Mikolajczyk, Krystian Qin, Lei Wang, Lijun Wen, Longyin Bertinetto, Luca Rapuru, Madan Kumar Poostchi, Mahdieh Maresca, Mario Danelljan, Martin Mueller, Matthias Zhang, Mengdan Arens, Michael Valstar, Michel Tang, Ming Baek, Mooyeol Khan, Muhammad Haris Wang, Naiyan Fan, Nana Al-Shakarji, Noor Miksik, Ondrej Akin, Osman Moallem, Payman Senna, Pedro Torr, Philip H. S. Yuen, Pong C. Huang, Qingming Martin-Nieto, Rafael Pelapur, Rengarajan Bowden, Richard Laganiere, Robert Stolkin, Rustam Walsh, Ryan Krah, Sebastian B. Li, Shengkun Zhang, Shengping Yao, Shizeng Hadfield, Simon Melzi, Simone Lyu, Siwei Li, Siyi Becker, Stefan Golodetz, Stuart Kakanuru, Sumithra Choi, Sunglok Hu, Tao Mauthner, Thomas Zhang, Tianzhu Pridmore, Tony Santopietro, Vincenzo Hu, Weiming Li, Wenbo Huebner, Wolfgang Lan, Xiangyuan Wang, Xiaomeng Li, Xin Li, Yang Demiris, Yiannis Wang, Yifan Qi, Yuankai Yuan, Zejian Cai, Zexiong Xu, Zhan He, Zhenyu Chi, Zhizhen BE Hua, G Jegou, H TI The Visual Object Tracking VOT2016 Challenge Results SO COMPUTER VISION - ECCV 2016 WORKSHOPS, PT II SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 14th European Conference on Computer Vision (ECCV) CY OCT 08-16, 2016 CL Amsterdam, NETHERLANDS DE Performance evaluation; Short-term single-object trackers; VOT ID CORRELATION FILTERS; NONRIGID OBJECTS; MEAN-SHIFT; MOTION; FACE AB The Visual Object Tracking challenge VOT2016 aims at comparing short-term single-object visual trackers that do not apply pre-learned models of object appearance. Results of 70 trackers are presented, with a large number of trackers being published at major computer vision conferences and journals in the recent years. The number of tested state-of-the-art trackers makes the VOT 2016 the largest and most challenging benchmark on short-term tracking to date. For each participating tracker, a short description is provided in the Appendix. The VOT2016 goes beyond its predecessors by (i) introducing a new semi-automatic ground truth bounding box annotation methodology and (ii) extending the evaluation system with the no-reset experiment. C1 [Kristan, Matej; Cehovin, Luka; Lukezic, Alan] Univ Ljubljana, Ljubljana, Slovenia. [Leonardis, Ales; Xiao, Jingjing; Stolkin, Rustam] Univ Birmingham, Birmingham, England. [Matas, Jiri; Vojir, Tomas] Czech Tech Univ, Prague, Czech Republic. [Felsberg, Michael; Hager, Gustav; Robinson, Andreas; Khan, Fahad; Danelljan, Martin] Linkoping Univ, Linkoping, Sweden. [Pflugfelder, Roman; Fernandez, Gustavo] Austrian Inst Technol, Seibersdorf, Austria. [Porikli, Fatih; Li, Hongdong] ARC Ctr Excellence Robot Vis, Brisbane, Qld, Australia. [Gundogdu, Erhan] Aselsan Res Ctr, Ankara, Turkey. [Choi, Jin Young; Jeong, Jiyeoup; Choi, Jongwon] ASRI, Seoul, South Korea. [Porikli, Fatih; Zhu, Gao; Li, Hongdong] Australian Natl Univ, Canberra, ACT, Australia. [Gupta, Abhinav] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Xu, Changsheng; Zhao, Fei; Feng, Jiayi; Gao, Jin; Xing, Junliang; Gao, Junyu; Qin, Lei; Zhang, Mengdan; Tang, Ming; Zhang, Tianzhu; Hu, Weiming] Chinese Acad Sci, Beijing, Peoples R China. [Sun, Chong; Lu, Huchuan; Wang, Lijun; Wang, Yifan; Chi, Zhizhen] Dalian Univ Technol, Dalian, Peoples R China. [Jeong, Jae-chan; Cho, Jae-il; Lee, Jae-Yeong; Kim, Ji-Wan; Choi, Sunglok] Elect & Telecommun Res Inst, Seoul, South Korea. [Arens, Michael; Krah, Sebastian B.; Becker, Stefan; Huebner, Wolfgang] Fraunhofer IOSB, Karlsruhe, Germany. [Bischof, Horst; Possegger, Horst; Mauthner, Thomas] Graz Univ Technol, Graz, Austria. [Erdem, Aykut; Erdem, Erkut; Akin, Osman] Hacettepe Univ, Cankaya, Turkey. [Fan, Nana; Huang, Qingming; Zhang, Shengping; Li, Xin; Qi, Yuankai; He, Zhenyu] Harbin Inst Technol, Harbin, Peoples R China. [Ma, Andy J.; Yuen, Pong C.; Lan, Xiangyuan; Cai, Zexiong] Hong Kong Baptist Univ, Kowloon Tong, Peoples R China. [Yeung, Dit-Yan; Wang, Naiyan; Li, Siyi] Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China. [Chang, Hyung Jin; Mikolajczyk, Krystian; Demiris, Yiannis] Imperial Coll London, London, England. [Mishra, Deepak; Subrahmanyam, Gorthi R. K. Sai; Rapuru, Madan Kumar; Kakanuru, Sumithra] Indian Inst Space Sci & Technol, Thiruvananthapuram, Kerala, India. [Ghanem, Bernard; Mueller, Matthias] KAUST, Thuwal, Saudi Arabia. [Varfolomieiev, Anton] Kyiv Polytech Inst, Kiev, Ukraine. [Li, Wenbo] Lehigh Univ, Bethlehem, PA 18015 USA. [Medeiros, Henry; Walsh, Ryan] Marquette Univ, Milwaukee, WI 53233 USA. Middle East Tech Univ, Cankaya, Turkey. [Seetharaman, Guna] US Navy, Res Lab, Washington, DC 20375 USA. [Nam, Hyeonseob] NAVER Corp, Seongnam, South Korea. [Porikli, Fatih] CSIRO, Data61, Eveleigh, Australia. [Petrosino, Alfredo; Battistone, Francesco; Maresca, Mario; Santopietro, Vincenzo] Parthenope Univ Naples, Naples, Italy. [Han, Bohyung; Kim, Daijin; Lee, Hyemin; Baek, Mooyeol] POSTECH, Pohang, South Korea. [Garcia-Martin, Alvaro; Martinez, Jose M.; Martin-Nieto, Rafael] Univ Autonoma Madrid, Madrid, Spain. [Bastos, Guilherme; Drummond, Isabela; Senna, Pedro] Univ Fed Itajuba, Pinheirinho, Brazil. [Chang, Chang-Ming; Wen, Longyin; Li, Shengkun; Lyu, Siwei] Univ Albany, Albany, GA USA. [Du, Dawei; Qi, Honggang; Huang, Qingming; Hu, Tao] Univ Chinese Acad Sci, Beijing, Peoples R China. [Memarmoghadam, Alireza; Moallem, Payman] Univ Isfahan, Esfahan, Iran. [Bunyak, Filiz; Palaniappan, Kannappan; Gao, Ke; Poostchi, Mahdieh; Al-Shakarji, Noor; Pelapur, Rengarajan; Yao, Shizeng] Univ Missouri, Columbia, MO 65211 USA. [Martinez, Brais; Valstar, Michel; Khan, Muhammad Haris; Pridmore, Tony; Wang, Xiaomeng] Univ Nottingham, Nottingham, England. [Montero, Andres Solis; Lang, Jochen; Laganiere, Robert] Univ Ottawa, Ottawa, ON, Canada. [Vedaldi, Andrea; Valmadre, Jack; Henriques, Joao F.; Bertinetto, Luca; Miksik, Ondrej; Torr, Philip H. S.; Golodetz, Stuart] Univ Oxford, Oxford, England. [Lebeda, Karel; Bowden, Richard; Hadfield, Simon] Univ Surrey, Guildford, Surrey, England. [Roffo, Giorgio; Melzi, Simone] Univ Verona, Verona, Italy. [Chen, Dapeng; Yuan, Zejian] Xi An Jiao Tong Univ, Xian, Peoples R China. [Zhu, Jianke; Li, Yang; Xu, Zhan] Zhejiang Univ, Hangzhou, Zhejiang, Peoples R China. [Liu, Bin] Moshanghua Technol Co, Beijing, Peoples R China. RP Kristan, M (reprint author), Univ Ljubljana, Ljubljana, Slovenia. EM matej.kristan@fri.uni-lj.si OI Cehovin, Luka/0000-0003-2823-272X NR 114 TC 1 Z9 1 U1 5 U2 5 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-319-48881-3; 978-3-319-48880-6 J9 LECT NOTES COMPUT SC PY 2016 VL 9914 BP 777 EP 823 DI 10.1007/978-3-319-48881-3_54 PG 47 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BG5HT UT WOS:000389501700054 ER PT S AU Felsberg, M Kristan, M Matas, J Leonardis, A Pflugfelder, R Hager, G Berg, A Eldesokey, A Ahlberg, J Cehovin, L Vojir, T Lukezic, A Fernandez, G Petrosino, A Garcia-Martin, A Montero, AS Varfolomieiev, A Erdem, A Han, BH Chang, CM Du, DW Erdem, E Khan, FS Porikli, F Zhao, F Bunyak, F Battistone, F Zhu, G Seetharaman, G Li, HD Qi, HG Bischof, H Possegger, H Nam, H Valmadre, J Zhu, JK Feng, JY Lang, JC Martinez, JM Palaniappan, K Lebeda, K Gao, K Mikolajczyk, K Wen, LY Bertinetto, L Poostchi, M Maresca, M Danelljan, M Arens, M Tang, M Baek, M Fan, NN Al-Shakarji, N Miksik, O Akin, O Torr, PHS Huang, QM Martin-Nieto, R Pelapur, R Bowden, R Laganiere, R Krah, SB Li, SK Yao, SZ Hadfield, S Lyu, SW Becker, S Golodetz, S Hu, T Mauthner, T Santopietro, V Li, W Hubner, W Li, X Li, Y Xu, Z He, ZY AF Felsberg, Michael Kristan, Matej Matas, Jiri Leonardis, Ales Pflugfelder, Roman Hager, Gustav Berg, Amanda Eldesokey, Abdelrahman Ahlberg, Jorgen Cehovin, Luka Vojir, Tomas Lukezic, Alan Fernandez, Gustavo Petrosino, Alfredo Garcia-Martin, Alvaro Montero, Andres Solis Varfolomieiev, Anton Erdem, Aykut Han, Bohyung Chang, Chang-Ming Du, Dawei Erdem, Erkut Khan, Fahad Shahbaz Porikli, Fatih Zhao, Fei Bunyak, Filiz Battistone, Francesco Zhu, Gao Seetharaman, Guna Li, Hongdong Qi, Honggang Bischof, Horst Possegger, Horst Nam, Hyeonseob Valmadre, Jack Zhu, Jianke Feng, Jiayi Lang, Jochen Martinez, Jose M. Palaniappan, Kannappan Lebeda, Karel Gao, Ke Mikolajczyk, Krystian Wen, Longyin Bertinetto, Luca Poostchi, Mahdieh Maresca, Mario Danelljan, Martin Arens, Michael Tang, Ming Baek, Mooyeol Fan, Nana Al-Shakarji, Noor Miksik, Ondrej Akin, Osman Torr, Philip H. S. Huang, Qingming Martin-Nieto, Rafael Pelapur, Rengarajan Bowden, Richard Laganiere, Robert Krah, Sebastian B. Li, Shengkun Yao, Shizeng Hadfield, Simon Lyu, Siwei Becker, Stefan Golodetz, Stuart Hu, Tao Mauthner, Thomas Santopietro, Vincenzo Li, Wenbo Huebner, Wolfgang Li, Xin Li, Yang Xu, Zhan He, Zhenyu BE Hua, G Jegou, H TI The Thermal Infrared Visual Object Tracking VOT-TIR2016 Challenge Results SO COMPUTER VISION - ECCV 2016 WORKSHOPS, PT II SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 14th European Conference on Computer Vision (ECCV) CY OCT 08-16, 2016 CL Amsterdam, NETHERLANDS DE Performance evaluation; Object tracking; Thermal IR; VOT ID CORRELATION FILTERS AB The Thermal Infrared Visual Object Tracking challenge 2016, VOT-TIR2016, aims at comparing short-term single-object visual trackers that work on thermal infrared (TIR) sequences and do not apply pre-learned models of object appearance. VOT-TIR2016 is the second benchmark on short-term tracking in TIR sequences. Results of 24 trackers are presented. For each participating tracker, a short description is provided in the appendix. The VOT-TIR2016 challenge is similar to the 2015 challenge, the main difference is the introduction of new, more difficult sequences into the dataset. Furthermore, VOT-TIR2016 evaluation adopted the improvements regarding overlap calculation in VOT2016. Compared to VOT-TIR2015, a significant general improvement of results has been observed, which partly compensate for the more difficult sequences. The dataset, the evaluation kit, as well as the results are publicly available at the challenge website. C1 [Felsberg, Michael; Hager, Gustav; Berg, Amanda; Eldesokey, Abdelrahman; Ahlberg, Jorgen; Khan, Fahad Shahbaz; Danelljan, Martin] Linkoping Univ, Linkoping, Sweden. [Kristan, Matej; Cehovin, Luka; Lukezic, Alan] Univ Ljubljana, Ljubljana, Slovenia. [Matas, Jiri; Vojir, Tomas] Czech Tech Univ, Prague, Czech Republic. [Leonardis, Ales] Univ Birmingham, Birmingham, England. [Pflugfelder, Roman; Fernandez, Gustavo] Austrian Inst Technol, Seibersdorf, Austria. [Berg, Amanda; Ahlberg, Jorgen] Termisk Syst Tekn AB, Linkoping, Sweden. [Porikli, Fatih; Li, Hongdong] ARC Ctr Excellence Robot Vis, Canberra, ACT, Australia. [Du, Dawei; Zhao, Fei; Qi, Honggang; Feng, Jiayi; Tang, Ming; Huang, Qingming; Hu, Tao] Australian Natl Univ, Canberra, ACT, Australia. [Du, Dawei; Zhao, Fei; Qi, Honggang; Feng, Jiayi; Tang, Ming; Huang, Qingming; Hu, Tao] Chinese Acad Sci, Beijing, Peoples R China. [Arens, Michael; Krah, Sebastian B.; Becker, Stefan; Huebner, Wolfgang] Fraunhofer IOSB, Karlsruhe, Germany. [Bischof, Horst; Possegger, Horst; Mauthner, Thomas] Graz Univ Technol, Graz, Austria. [Erdem, Aykut; Erdem, Erkut; Akin, Osman] Hacettepe Univ, Ankara, Turkey. [Fan, Nana; Li, Xin; He, Zhenyu] Harbin Inst Technol, Harbin, Peoples R China. [Mikolajczyk, Krystian] Imperial Coll London, London, England. [Varfolomieiev, Anton] Kyiv Polytech Inst, Kiev, Ukraine. [Li, Wenbo] Lehigh Univ, Bethlehem, PA 18015 USA. [Seetharaman, Guna] US Navy, Res Lab, Washington, DC 20375 USA. [Nam, Hyeonseob] NAVER Corp, Seongnam, South Korea. [Porikli, Fatih] CSIRO, Data61, Alexandria, Australia. [Petrosino, Alfredo; Battistone, Francesco; Maresca, Mario; Santopietro, Vincenzo] Parthenope Univ Naples, Naples, Italy. [Han, Bohyung; Baek, Mooyeol] POSTECH, Pohang, South Korea. [Garcia-Martin, Alvaro; Martinez, Jose M.; Martin-Nieto, Rafael] Univ Autonoma Madrid, Madrid, Spain. [Chang, Chang-Ming; Wen, Longyin; Li, Shengkun; Lyu, Siwei] Univ Albany, Albany, GA USA. [Bunyak, Filiz; Palaniappan, Kannappan; Gao, Ke; Poostchi, Mahdieh; Al-Shakarji, Noor; Pelapur, Rengarajan; Yao, Shizeng] Univ Missouri, Columbia, MO 65211 USA. [Montero, Andres Solis; Lang, Jochen; Laganiere, Robert] Univ Ottawa, Ottawa, ON, Canada. [Valmadre, Jack; Bertinetto, Luca; Miksik, Ondrej; Torr, Philip H. S.; Golodetz, Stuart] Univ Oxford, Oxford, England. [Lebeda, Karel; Bowden, Richard; Hadfield, Simon] Univ Surrey, Guildford, Surrey, England. [Zhu, Jianke; Li, Yang; Xu, Zhan] Zhejiang Univ, Hangzhou, Zhejiang, Peoples R China. RP Felsberg, M (reprint author), Linkoping Univ, Linkoping, Sweden. OI Cehovin, Luka/0000-0003-2823-272X NR 56 TC 0 Z9 0 U1 4 U2 4 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-319-48881-3; 978-3-319-48880-6 J9 LECT NOTES COMPUT SC PY 2016 VL 9914 BP 824 EP 849 DI 10.1007/978-3-319-48881-3_55 PG 26 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BG5HT UT WOS:000389501700055 ER PT S AU Clarke, TE Kassim, NE Brisken, W Helmboldt, J Peters, W Ray, PS Polisensky, E Giacintucci, S AF Clarke, Tracy E. Kassim, Namir E. Brisken, Walter Helmboldt, Joseph Peters, Wendy Ray, Paul S. Polisensky, Emil Giacintucci, Simona BE Hall, HJ Gilmozzi, R Marshall, HK TI Commensal low frequency observing on the NRAO VLA: VLITE status and future plans SO GROUND-BASED AND AIRBORNE TELESCOPES VI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ground-Based and Airborne Telescopes VI CY JUN 26-JUL 01, 2016 CL Edinburgh, SCOTLAND SP SPIE DE radio interferometry; low frequency; Very Large Array; astrophysics; ionosphere; VLITE ID LARGE ARRAY; SKY SURVEY AB The National Radio Astronomy Observatory's 27 antenna Karl G. Jansky Very Large Array (NRAO VLA) has been successfully transitioned to a broadband system. As part of this transition, the US Naval Research Laboratory (NRL) worked with NRAO to develop, install, and commission a new commensal low frequency system on the VLA. The VLA Low-band Ionosphere and Transient Experiment (VLITE) has dedicated samplers and uses spare NRAO optical fibers to transmit the signal from 10 low band receivers on VLA antennas to a dedicated real-time DiFX correlator. For these 10 antennas, this observing mode provides simultaneous data from both the low frequency receivers through the VLITE correlator and from the VLA higher frequencies receivers (1-50 GHz) through the NRAO WIDAR correlator. During the first 1.5 years of operation, VLITE recorded data at roughly 70% wall-time, providing 64 MHz of bandwidth centered at 352 MHz with 2s sample time and 100 kHz spectral resolution. VLITE operations require no additional resources from the VLA system and greatly expand the capabilities of the VLA through value-added PI science, stand-alone astrophysics, the opening of a new window on transient searches, and serendipity. We present an overview of the VLITE program, discuss the sky coverage and depth obtained during the first 1.5 years of operation, and briefly outline a possible path forward to a full 27 antenna LOw Band Observatory (LOBO) which could run commensally with all VLA operations. C1 [Clarke, Tracy E.; Kassim, Namir E.; Helmboldt, Joseph; Peters, Wendy; Ray, Paul S.; Polisensky, Emil] US Navy, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Brisken, Walter] Natl Radio Astron Observ, 1003 Lopezville Dr, Socorro, NM 87801 USA. [Giacintucci, Simona] Univ Maryland, Dept Astron, College Pk, MD 20742 USA. RP Clarke, TE (reprint author), US Navy, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM tracy.clarke@nrl.navy.mil OI Ray, Paul/0000-0002-5297-5278 NR 19 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0191-8; 978-1-5106-0192-5 J9 PROC SPIE PY 2016 VL 9906 AR UNSP 99065B DI 10.1117/12.2233036 PN 1 PG 9 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BG2WM UT WOS:000387731100160 ER PT S AU Asanuma, I Yamaguchi, T Park, JG Mackin, KJ Mittleman, J AF Asanuma, Ichio Yamaguchi, Takashi Park, John-goel Mackin, Kenneth J. Mittleman, John BE Silny, JF Ientilucci, EJ TI Detection limit of fishing boats by the day night band (DNB) on VIIRS SO IMAGING SPECTROMETRY XXI SE Proceedings of SPIE LA English DT Proceedings Paper CT SPIE's 21st Imaging Spectrometry Conference CY AUG 29-30, 2016 CL San Diego, CA SP SPIE DE Day Night Band; VIIRS; Suomi-NPP; Fishery; South China Sea; Lunar reflectance ID DEEP CONVECTIVE CLOUDS; DAY/NIGHT BAND; LIGHT; CAPABILITIES; CALIBRATION AB The detection limit of DNB was proposed as a function of the brightness temperature (BT) at 3.7 mu m, where the transmittance of cloud could be observed as a change of surface temperature. The shortwave infrared band exhibited a wide distribution in BT more than the thermal infrared band for the same level of DNB radiance. The lights from surface were identified even under the full Moon condition with the proposed method, where clouds were reflecting the lunar lights. A different distribution of clouds for day to day and a change of the Moon phase with its elevation make this problem more complicated. But the approach of contrast based evaluation of surface lights and lunar reflected lights could be one solution to distinguish the lights from the surface. Currently, a validation is necessary in the future to confirm this algorithm and to validate the detected pixels to be fishing boats with the stable light sources. The time series data of fishing boats could be studied to analyze the region of fishing area relative to the distribution of sea surface temperature and/or chlorophyll-a. C1 [Asanuma, Ichio; Yamaguchi, Takashi; Park, John-goel; Mackin, Kenneth J.] Tokyo Univ Informat Sci, Tokyo, Japan. [Mittleman, John] Naval Res Lab, Washington, DC 20375 USA. RP Asanuma, I (reprint author), Tokyo Univ Informat Sci, Tokyo, Japan. NR 20 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0343-1; 978-1-5106-0344-8 J9 PROC SPIE PY 2016 VL 9976 AR UNSP 99760P DI 10.1117/12.2237701 PG 8 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA BG5QQ UT WOS:000389680900019 ER PT S AU Schaum, A Allman, E Stites, M AF Schaum, Alan Allman, Eric Stites, Matthew BE Silny, JF Ientilucci, EJ TI Clairvoyant fusion detection of ocean anomalies in WorldView-2 spectral imagery SO IMAGING SPECTROMETRY XXI SE Proceedings of SPIE LA English DT Proceedings Paper CT SPIE's 21st Imaging Spectrometry Conference CY AUG 29-30, 2016 CL San Diego, CA SP SPIE DE ship detection; clairvoyant fusion; anomaly detection; ocean surveillance AB For every possible mixture of clouds and ocean in WorldView-2 8-band data, we construct an anomaly detector (called a "clairvoyant" because we never know which mixture is appropriate in any given pixel). Then we combine these using a fusion technique. The usual method of deriving an analytic expression describing the envelope of all the clairvoyants' decision boundaries is not possible. Instead, we compute the intersections of infinitesimally close boundaries generated by differential changes in the mixing fraction. When glued together, these 6-dimensional hyperstrings constitute the desired 7-dimensional decision boundary of the fused anomaly detector. However, no closed-form solution exists for the fused result. Therefore, we construct an approximation to the fused detection boundary by first flattening the strings into 6-dimensional hyperplanes and then gluing them together a la 3D printing. C1 [Schaum, Alan; Allman, Eric] Naval Res Lab, Washington, DC USA. [Stites, Matthew] Space Dynam Lab, Logan, UT USA. RP Schaum, A (reprint author), Naval Res Lab, Washington, DC USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0343-1; 978-1-5106-0344-8 J9 PROC SPIE PY 2016 VL 9976 AR UNSP 99760G DI 10.1117/12.2239142 PG 11 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA BG5QQ UT WOS:000389680900012 ER PT B AU Guth, PL AF Guth, Peter L. BE McDonald, EV Bullard, T TI Digital Elevation Models to Support Desert Warfare SO MILITARY GEOSCIENCES AND DESERT WARFARE: PAST LESSONS AND MODERN CHALLENGES SE Advances in Military Geosciences LA English DT Proceedings Paper CT 9th International Conference on Military Geosciences (ICMG) CY JUN 20-24, 2011 CL Las Vegas, NV DE DEMs; SRTM; ASTER GDEM; LiDAR ID LIDAR AB Digital elevation models (DEMs) provide a fundamental resource for terrain analysis and military mission planning. Recent developments have changed the quality of the DEMs available worldwide. The Shuttle Radar Topography Mission (SRTM) flew in 2000 and created DEMs with resolutions of 1 '' (similar to 30 m) for the US military and 3 '' (similar to 90 m) freely available for the general public. The SRTM covered all the earth except for high latitude regions. For the rest of the world its major limitations are the data voids in regions of high relief. Less publicized are the voids in dry desert sand, which account for a larger fraction of the voids than those in high mountains. In contrast to the active radar used for SRTM, which worked day/night and through clouds, the more recent ASTER GDEM used near infrared energy which only worked in daylight and could not penetrate clouds. Development of the ASTER GDEM required years of data collection for relatively complete coverage. Significant anomalies were present in version 1, in large part due to undetected clouds. Version 2 of GDEM offered improvements, but still has anomalies, and the desert regions have the largest concentration of poorly correlated GDEM and SRTM. SRTM or GDEM can provide terrain data for large area, small scale military operations. For very large scale operations, interferometric synthetic aperture radar (IFSAR) DEMs provide point spacings of 3-5 m and LiDAR provides spacings of about 1 m. These data sets are much less widely and freely available, in part because of the huge volume of data: SRTM 3 " requires 35 GB for global coverage, ASTER GDEM about 561 GB, and 1 m LiDAR will require about 1000 TB for full coverage. LiDAR point clouds offer additional visualization and analysis capabilities compared to traditional grids. C1 [Guth, Peter L.] US Naval Acad, Dept Oceanog, 572C Holloway Rd, Annapolis, MD 21402 USA. RP Guth, PL (reprint author), US Naval Acad, Dept Oceanog, 572C Holloway Rd, Annapolis, MD 21402 USA. EM pguth@usna.edu NR 31 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-1-4939-3429-4; 978-1-4939-3427-0 J9 ADV MIL GEOSCI PY 2016 BP 259 EP 272 DI 10.1007/978-1-4939-3429-4_17 PG 14 WC Geography; Geosciences, Multidisciplinary; History SC Geography; Geology; History GA BG5YC UT WOS:000389807200017 ER PT S AU Sapkota, G Case, JR Busse, LE Frantz, JA Shaw, LB Sanghera, JS Aggarwal, ID Poutous, MK AF Sapkota, Gopal Case, Jason R. Busse, Lynda E. Frantz, Jesse A. Shaw, L. Brandon Sanghera, Jasbinder S. Aggarwal, Ishwar D. Poutous, Menelaos K. BE Campo, EM Dobisz, EA Eldada, LA TI Characterization of random anti-reflecting surface structures and their polarization response at off-normal angles of incidence SO NANOENGINEERING: FABRICATION, PROPERTIES, OPTICS, AND DEVICES XIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Nanoengineering - Fabrication, Properties, Optics, and Devices XIII CY AUG 30-31, 2016 CL San Diego, CA SP SPIE DE random anti-reflection surfaces; polarization; polarization extinction ratio; broadband transmission enhancement; wide-angle polarization insensitivity ID FUSED-SILICA AB Random anti-reflecting surface structures (rARSS) are fabricated on fused silica substrates, for broadband and omnidirectional applications. These structures are fabricated using dry reactive ion etching. Etching parameters, such as RF power, flow ratio of etching gases, and etching time, determine the surface morphology of the random structures. The surface roughness of the random structures induces a gradient index transition over the boundary, yielding transmission enhancement compared to plain polished fused silica. We present variable angle-of-incidence (AOI) and polarization transmission measurements, through rARSS on fused silica at 633nm, and compare the results with conventional AR coating simulations. We tested a number of different samples, all with optimized transmission near 633nm, but different surface characteristics, and found that rARSS have structural characteristics which affect transmission at non-normal angles of incidence. We show that rARSS on fused silica substrates outperform conventional BBAR and SLAR thin film coatings in transmission enhancement, for incident light with AOI from 0 degrees to 55 degrees. We measured rARSS with zero degree of polarization in transmission, for AOI ranging from 0 degrees to 60 degrees in certain cases. A figure of merit that includes both the transmission degree of polarization and transmission enhancement is formulated in order to quantify rARSS performance for both effects. We found that rARSS measured performance is better than SLAR and BBAR, for transmission with AOI greater than 30 degrees and up to 70 degrees, especially for p-polarized incident light, which is the stricter criterion. Applications requiring polarization insensitivity and AR performance can be positively impacted by these surface structures. C1 [Sapkota, Gopal; Case, Jason R.; Poutous, Menelaos K.] Univ North Carolina Charlotte, Dept Phys & Opt Sci, Charlotte, NC 28223 USA. [Busse, Lynda E.; Frantz, Jesse A.; Shaw, L. Brandon; Sanghera, Jasbinder S.] Naval Res Lab, Code 5620, Washington, DC 20375 USA. [Aggarwal, Ishwar D.] Sotera Def Solut, Mclean, VA 22102 USA. RP Sapkota, G (reprint author), Univ North Carolina Charlotte, Dept Phys & Opt Sci, Charlotte, NC 28223 USA. NR 11 TC 1 Z9 1 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0245-8; 978-1-5106-0246-5 J9 PROC SPIE PY 2016 VL 9927 AR 992712 DI 10.1117/12.2235380 PG 8 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Optics SC Engineering; Science & Technology - Other Topics; Optics GA BG6DC UT WOS:000390022300020 ER PT S AU Hite, J Nepal, N Anderson, VR Freitas, JA Mastro, MA Eddy, CR AF Hite, Jennifer Nepal, Neeraj Anderson, Virginia R. Freitas, Jaime A. Mastro, Michael A. Eddy, Charles R., Jr. BE Razeghi, M Brown, GJ Lewis, JS TI Atomic layer epitaxy for quantum well nitride-based devices SO QUANTUM SENSING AND NANO ELECTRONICS AND PHOTONICS XIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Quantum Sensing and Nano Electronics and Photonics XIII CY FEB 14-18, 2016 CL San Francisco, CA SP SPIE DE III-nitride; atomic layer epitaxy; quantum well ID MOLECULAR-BEAM EPITAXY; THIN-FILMS; GROWTH; DEPOSITION; GAN; TEMPERATURES AB The development and characterization of nitride QW structures grown by atomic layer epitaxy (ALEp) for device applications are discussed. We have grown epitaxial thin films (4-10nm) covering the full range of binary and ternary III-N compositions by ALEp. In this work, ALEp-grown QW structures are presented. Optical characteristics are discussed. Characterization of layer interfaces and composition are critical to the development of this growth technique for quantum-based devices. Structures to study this by atom probe tomography have been created. By understanding the structure of crystalline ALEp films with nanometer-scale thickness, the unique properties of these materials can be advanced for quantum-scale applications. C1 [Hite, Jennifer; Freitas, Jaime A.; Mastro, Michael A.; Eddy, Charles R., Jr.] US Naval Res Lab, Washington, DC 20375 USA. [Nepal, Neeraj] Sotera Def Solut, Crofton, MD 21114 USA. [Anderson, Virginia R.] Amer Soc Engn Educ, Washington, DC USA. RP Hite, J (reprint author), US Naval Res Lab, Washington, DC 20375 USA. NR 27 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-62841-990-0 J9 PROC SPIE PY 2016 VL 9755 AR 97551W DI 10.1117/12.2209111 PG 6 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG4AA UT WOS:000388442500023 ER PT S AU Merritt, CD Bewley, WW Canedy, CL Kim, CS Kim, M Vurgaftman, I Meyer, JR AF Merritt, C. D. Bewley, W. W. Canedy, C. L. Kim, C. S. Kim, M. Vurgaftman, I. Meyer, J. R. BE Razeghi, M Brown, GJ Lewis, JS TI Interband Cascade Lasers with CW Wallplug Efficiency Higher than 40% at Low Temperatures SO QUANTUM SENSING AND NANO ELECTRONICS AND PHOTONICS XIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Quantum Sensing and Nano Electronics and Photonics XIII CY FEB 14-18, 2016 CL San Francisco, CA SP SPIE DE Interband cascade laser; mid-infrared; threshold current density; wallplug efficiency; high efficiency AB We report cw wallplug efficiencies (WPEs) for mid-infrared interband cascade lasers (ICLs) that are comparable to those of state-of-the-art quantum cascade lasers at temperatures ranging from the cryogenic regime to room temperature. The continuous wave (cw) WPE for 10-stage broad-area devices remains above 40% for temperatures up to 125 K, and is still >30% at T = 175 K. At 80 K the threshold current density for a 2-mm-long cavity is only 11 A/cm(2), and slope efficiencies are > 2.2 W/A at all temperatures = 200 K. A 32-mu m-wide x 3-mm-long ridge with 7 active stages and high-reflection and anti-reflection coatings on the two facets displays a cw WPE of 24% at T = 200 K and 12% at T = 300 K. The cw WPE of another narrow-ridge ICL was 18% at room temperature. C1 [Merritt, C. D.; Bewley, W. W.; Canedy, C. L.; Kim, C. S.; Vurgaftman, I.; Meyer, J. R.] Naval Res Lab, Code 5613, Washington, DC 20375 USA. [Kim, M.] Sotera Def Solut MD Inc, Columbia, MD 21046 USA. RP Meyer, JR (reprint author), Naval Res Lab, Code 5613, Washington, DC 20375 USA. EM MWIR_laser@nrl.navy.mil NR 17 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 978-1-62841-990-0 J9 PROC SPIE PY 2016 VL 9755 AR 97550G DI 10.1117/12.2209388 PG 8 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG4AA UT WOS:000388442500009 ER PT S AU Courtney, DW Thulasiraman, P AF Courtney, David W. Thulasiraman, Preetha GP IEEE TI Implementation of Secure 6LoWPAN Communications for Tactical Wireless Sensor Networks SO 2016 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS) SE IEEE Conference on Computer Communications Workshops LA English DT Proceedings Paper CT IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS) CY APR 10-14, 2016 CL San Francisco, CA SP IEEE AB Tactical wireless sensor networks (WSN) consist of power constrained devices spread throughout a region of interest to provide data extraction in real time. The main challenges to the deployment of tactical WSNs for mission-centric operations are limited nodal energy and information security. In this paper we develop security mechanisms to be implemented on a tactical WSN using the 6LoWPAN protocol for use by the United States Marine Corps (USMC). Specifically, we develop an architectural framework for tactical WSNs by studying security gaps and vulnerabilities within the 6LoWPAN security sublayer which is based on IEEE 802.15.4. We develop a key management scheme that is non-broadcast but that is also feasible in an operational scenario. In addition, we modify the 6LoWPAN packet structure to facilitate the newly developed keying mechanism. The tactical WSN architecture is designed to defend against a variety of network attacks that can potentially occur. Simulations will be conducted via MATLAB to show the effectiveness of the developed keying and communication mechanisms. C1 [Courtney, David W.; Thulasiraman, Preetha] US Navy, Postgrad Sch, Monterey, CA 93943 USA. RP Courtney, DW (reprint author), US Navy, Postgrad Sch, Monterey, CA 93943 USA. EM dwcourtn@nps.edu; pthulas1@nps.edu 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 2159-4228 BN 978-1-4673-9955-5 J9 IEEE CONF COMPUT PY 2016 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG4WN UT WOS:000389210700132 ER PT S AU Rye, EC Rohrer, JP Beverly, R AF Rye, Erik C. Rohrer, Justin P. Beverly, Robert GP IEEE TI Revisiting AS-Level Graph Reduction SO 2016 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS) SE IEEE Conference on Computer Communications Workshops LA English DT Proceedings Paper CT IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS) CY APR 10-14, 2016 CL San Francisco, CA SP IEEE AB The topological structure of the Internet - the interconnection of routers and autonomous systems (ASes) is large and complex. Frequently it is necessary to evaluate network protocols and applications on "Internet-like" graphs in order understand their security, resilience, and performance properties. A fundamental obstacle to emulation and simulation is creating realistic Internet-like topologies of reduced order. We reexamine existing AS graph reduction algorithms and find that they struggle to capture graph theoretic properties of modern topologies and topologies obtained from different sources. We develop a new AS graph reduction method that performs weIl across time periods and data sets. C1 [Rye, Erik C.] US Naval Acad, Annapolis, MD 21402 USA. [Rohrer, Justin P.; Beverly, Robert] US Navy, Postgrad Sch, Monterey, CA USA. RP Rye, EC (reprint author), US Naval Acad, Annapolis, MD 21402 USA. EM rye@usna.edu; jprohrer@nps.edu; rbeverly@nps.edu NR 28 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2159-4228 BN 978-1-4673-9955-5 J9 IEEE CONF COMPUT PY 2016 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG4WN UT WOS:000389210700086 ER PT S AU Bouzi, PM Lou, JW Miller, GA Cranch, GA Fatemi, FK AF Bouzi, Pierre M. Lou, Janet W. Miller, Gary A. Cranch, Geoffrey A. Fatemi, Fredrik K. GP IEEE TI Characterization of Spin Polarization for Cesium Vapor Confined within Hollow Core Fibers SO 2016 IEEE International Frequency Control Symposium (IFCS) SE IEEE International Frequency Control Symposium LA English DT Proceedings Paper CT IEEE International Frequency Control Symposium (IFCS) CY MAY 09-12, 2016 CL New Orleans, LA SP IEEE, UFFC DE Spin relaxation; lifetime; Cesium; capillaries ID MAGNETOMETER; SENSITIVITY; LASER AB We have performed time-resolved measurements on cesium vapor to measure the dependence of the spin relaxation time on confinement area. Lifetime results obtained for cesium vapor trapped inside capillaries with diameters ranging from 75 mu m to 1.4 mm are up to 75% shorter than that obtained within a 4.5 cm chamber. C1 [Bouzi, Pierre M.] CNR, 500 Fifth St NW, Washington, DC 20001 USA. [Lou, Janet W.; Miller, Gary A.; Cranch, Geoffrey A.] Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Fatemi, Fredrik K.] US Army, Res Lab, Electroopt & Photon Div, 2800 Powder Mill Rd, Adelphi, MD 20783 USA. RP Bouzi, PM (reprint author), CNR, 500 Fifth St NW, Washington, DC 20001 USA. EM pierre.bouzi.ctr@nrl.navy.mil NR 12 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1075-6787 BN 978-1-5090-2091-1 J9 P IEEE INT FREQ CONT PY 2016 BP 181 EP 182 PG 2 WC Engineering, Electrical & Electronic; Physics, Applied; Telecommunications SC Engineering; Physics; Telecommunications GA BG4WK UT WOS:000389204500046 ER PT J AU Roche, DS Apon, D Choi, SG Yerukhimovich, A AF Roche, Daniel S. Apon, Daniel Choi, Seung Geol Yerukhimovich, Arkady GP ACM TI POPE: Partial Order Preserving Encoding SO CCS'16: PROCEEDINGS OF THE 2016 ACM SIGSAC CONFERENCE ON COMPUTER AND COMMUNICATIONS SECURITY LA English DT Proceedings Paper CT 23rd ACM Conference on Computer and Communications Security (CCS) CY OCT 24-28, 2016 CL Vienna, AUSTRIA SP Assoc Comp Machinery, ACM Special Interest Grp Secur Audit & Control ID ENCRYPTED DATA AB Recently there has been much interest in performing search queries over encrypted data to enable functionality while protecting sensitive data. One particularly efficient mechanism for executing such queries is order-preserving encryption/encoding (OPE) which results in ciphertexts that preserve the relative order of the underlying plaintexts thus allowing range and comparison queries to be performed directly on ciphertexts. Recently, Popa et al. (S&P 2013) gave the first construction of an ideally-secure OPE scheme and Kerschbaum (CCS 2015) showed how to achieve the even stronger notion of frequency-hiding OPE. However, as Naveed et al. (CCS 2015) have recently demonstrated, these constructions remain vulnerable to several attacks. Additionally, all previous ideal OPE schemes (with or without frequency-hiding) either require a large round complexity of O(log n) rounds for each insertion, or a large persistent client storage of size O(n), where n is the number of items in the database. It is thus desirable to achieve a range query scheme addressing both issues gracefully. In this paper, we propose an alternative approach to range queries over encrypted data that is optimized to support insert-heavy work-loads as are common in "big data" applications while still maintaining search functionality and achieving stronger security. Specifically, we propose a new primitive called partial order preserving encoding (POPE) that achieves ideal OPE security with frequency hiding and also leaves a sizable fraction of the data pairwise incomparable. Using only O(1) persistent and O(n (epsilon)) non-persistent client storage for 0 < epsilon < 1, our POPE scheme provides extremely fast batch insertion consisting of a single round, and efficient search with O(1) amortized cost for up to O(n(1-epsilon) ) search queries. This improved security and performance makes our scheme better suited for today's insert-heavy databases. C1 [Roche, Daniel S.; Choi, Seung Geol] US Naval Acad, Annapolis, MD 21402 USA. [Apon, Daniel] Univ Maryland, College Pk, MD 20742 USA. [Yerukhimovich, Arkady] MIT, Lincoln Lab, 244 Wood St, Lexington, MA 02173 USA. RP Roche, DS (reprint author), US Naval Acad, Annapolis, MD 21402 USA. EM roche@usna.edu; dapon@cs.umd.edu; choi@usna.edu; arkady@ll.mit.edu NR 43 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 978-1-4503-4139-4 PY 2016 BP 1131 EP 1142 DI 10.1145/2976749.2978345 PG 12 WC Computer Science, Information Systems; Telecommunications SC Computer Science; Telecommunications GA BG2ZW UT WOS:000387820900053 ER PT J AU Jansen, R Johnson, A AF Jansen, Rob Johnson, Aaron GP ACM TI Safely Measuring Tor SO CCS'16: PROCEEDINGS OF THE 2016 ACM SIGSAC CONFERENCE ON COMPUTER AND COMMUNICATIONS SECURITY LA English DT Proceedings Paper CT 23rd ACM Conference on Computer and Communications Security (CCS) CY OCT 24-28, 2016 CL Vienna, AUSTRIA SP Assoc Comp Machinery, ACM Special Interest Grp Secur Audit & Control AB Tor is a popular network for anonymous communication. The usage and operation of Tor is not well-understood, however, because its privacy goals make common measurement approaches ineffective or risky. We present PrivCount, a system for measuring the Tor network designed with user privacy as a primary goal. PrivCount securely aggregates measurements across Tor relays and over time to produce differentially private outputs. PrivCount improves on prior approaches by enabling flexible exploration of many diverse kinds of Tor measurements while maintaining accuracy and privacy for each. We use PrivCount to perform a measurement study of Tor of sufficient breadth and depth to inform accurate models of Tor users and traffic. Our results indicate that Tor has 710,000 users connected but only 550,000 active at a given time, that Web traffic now constitutes 91% of data bytes on Tor, and that the strictness of relays' connection policies significantly affects the type of application data they forward. C1 [Jansen, Rob; Johnson, Aaron] US Navy, Res Lab, Washington, DC 20375 USA. RP Jansen, R (reprint author), US Navy, Res Lab, Washington, DC 20375 USA. EM rob.g.jansen@nrl.navy.mil; aaron.m.johnson@nrl.navy.mil NR 23 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 978-1-4503-4139-4 PY 2016 BP 1553 EP 1567 DI 10.1145/2976749.2978310 PG 15 WC Computer Science, Information Systems; Telecommunications SC Computer Science; Telecommunications GA BG2ZW UT WOS:000387820900079 ER PT S AU Haq, R Cates, J Besachio, DA Borgie, RC Audette, MA AF Haq, Rabia Cates, Joshua Besachio, David A. Borgie, Roderick C. Audette, Michel A. BE Vrtovec, T Yao, J Glocker, B Klinder, T Frangi, A Zheng, G Li, S TI Statistical Shape Model Construction of Lumbar Vertebrae and Intervertebral Discs in Segmentation for Discectomy Surgery Simulation SO Computational Methods and Clinical Applications for Spine Imaging, CSI 2015 SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 3rd International Workshop and Challenge on Computational Methods and Clinical Applications for Spine Imaging (CSI) CY OCT 05, 2015 CL Munich, GERMANY SP Brainlab AG ID LOW-BACK-PAIN; DEGENERATION; GENERATION; 3-D AB Discectomy procedure simulations require patient-specific and robust three-dimensional representation of vertebral and intervertebral disc structures, as well as existing pathology, of the lumbar spine. Prior knowledge, such as expected shape and variation within a sample population, can be incorporated through statistical shape models to optimize the image segmentation process. This paper describes a framework for construction of statistical shape models (SSMs) of nine L1 vertebrae and eight L1-L2 intervertebral discs from computed tomography and magnetic resonance (MR) images respectively. The generated SSMs are utilized as a reference for knowledge-based priors to optimize coarse-to-fine multi-surface segmentation of vertebrae and intervertebral discs in volumetric MR images. Correspondence between instances within each model has been established using entropy-based energy minimization of particles on the image surfaces, which is independent of any reference bias or surface parameterization techniques. The resulting shape models faithfully capture variability within the first seven principal modes. C1 [Haq, Rabia; Audette, Michel A.] Old Dominion Univ, Norfolk, VA 23529 USA. [Cates, Joshua] Univ Utah, Salt Lake City, UT USA. [Besachio, David A.; Borgie, Roderick C.] Naval Med Ctr Portsmouth, Portsmouth, NH USA. RP Haq, R (reprint author), Old Dominion Univ, Norfolk, VA 23529 USA. EM rhaqx001@odu.edu; cates@sci.utah.edu; david.besachio@med.navy.mil; roderick.borgie@med.navy.mil; maudette@odu.edu NR 33 TC 0 Z9 0 U1 3 U2 3 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-319-41827-8; 978-3-319-41826-1 J9 LECT NOTES COMPUT SC PY 2016 VL 9402 BP 85 EP 96 DI 10.1007/978-3-319-41827-8_8 PG 12 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods; Radiology, Nuclear Medicine & Medical Imaging SC Computer Science; Radiology, Nuclear Medicine & Medical Imaging GA BG5IF UT WOS:000389504400008 ER PT S AU Sibley, C Coyne, J Avvari, GV Mishra, M Pattipati, KR AF Sibley, Ciara Coyne, Joseph Avvari, Gopi Vinod Mishra, Manisha Pattipati, Krishna R. BE Schmorrow, DD Fidopiastis, CM TI Supporting Multi-objective Decision Making Within a Supervisory Control Environment SO Foundations of Augmented Cognition: Neuroergonomics and Operational Neuroscience, Pt II SE Lecture Notes in Artificial Intelligence LA English DT Proceedings Paper CT 10th International Conference on Foundations of Augmented Cognition (AC) held as part of 18th International Conference on Human-Computer Interaction (HIC International) CY JUL 17-22, 2016 CL Toronto, CANADA DE Supervisory control; Decision making; Risk; Eye tracking; Situation awareness AB This paper discusses decision making challenges involved in the management of multiple unmanned vehicles within a dynamic mission environment. Given the increased likelihood of this new supervisory control paradigm, the authors developed the Supervisory Control Operations User Testbed (SCOUT). A brief overview of SCOUT will be provided, followed by a summary of initial research conducted within the testbed which demonstrates how eye tracking measurements can be utilized to assess workload and predict situation awareness. Subsequent discussion will address challenges associated with dynamic decision making under uncertainty, with respect to multiple asset allocation. Techniques for measuring the accuracy of these decisions as well as assessing operator risk throughout the mission will also be presented. The paper concludes with discussion of how these new decision making metrics can be used to drive decision aids and compares decision making performance and risk bias under varying levels of task load. C1 [Sibley, Ciara; Coyne, Joseph] Naval Res Lab, Washington, DC 20375 USA. [Avvari, Gopi Vinod; Mishra, Manisha; Pattipati, Krishna R.] Univ Connecticut, Storrs, CT USA. RP Sibley, C (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM ciara.sibley@nrl.navy.mil; joseph.coyne@nrl.navy.mil; vinod@engr.uconn.edu; manisha.mishra@engr.uconn.edu; krishna@engr.uconn.edu NR 11 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-319-39952-2; 978-3-319-39951-5 J9 LECT NOTES ARTIF INT PY 2016 VL 9744 BP 210 EP 221 DI 10.1007/978-3-319-39952-2_21 PG 12 WC Computer Science, Cybernetics; Ergonomics; Neurosciences; Psychology, Experimental SC Computer Science; Engineering; Neurosciences & Neurology; Psychology GA BG5DP UT WOS:000389409800021 ER PT S AU Nguyen, TD Gondree, MA AF Nguyen, Thuy D. Gondree, Mark A. BE Becue, A CuppensBoulahia, N Cuppens, F Katsikas, S Lambrinoudakis, C TI Teaching Industrial Control System Security Using Collaborative Projects SO Security of Industrial Control Systems and Cyber Physical Systems SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 1st Workshop on Cybersecurity of Industrial Control Systems (CyberICS) / 1st Workshop on the Security of Cyber-Physical Systems (WOS-CPS) CY SEP 21-22, 2015 CL Vienna, AUSTRIA DE ICS; SCADA; Ship-board ICS; Education; Capstone project ID CRITICAL INFRASTRUCTURE; CURRICULUM AB In this work, we discuss lessons learned over the past three years while supporting a graduate capstone course centered on research projects in industrial control system (ICS) security. Our course considers real-world problems in shipboard ICS posed by external stakeholders: a system-owner and related subject matter experts. We describe the course objectives, format, expectations and outcomes. While our experiences are generally positive, we remark on opportunities for curricula improvement relevant to those considering incorporating realistic ICS topics into their classroom, or those working with an external SME. C1 [Nguyen, Thuy D.; Gondree, Mark A.] 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 NR 23 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-319-40385-4; 978-3-319-40384-7 J9 LECT NOTES COMPUT SC PY 2016 VL 9588 BP 16 EP 30 DI 10.1007/978-3-319-40385-4_2 PG 15 WC Computer Science, Hardware & Architecture; Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BG5GY UT WOS:000389498400002 ER PT S AU Chappell, SP Beaton, KH Miller, MJ Graff, TG Abercromby, AFJ Gernhardt, ML Halcon, C AF Chappell, Steven P. Beaton, Kara H. Miller, Matthew J. Graff, Trevor G. Abercromby, Andrew F. J. Gernhardt, Michael L. Halcon, Christopher GP IEEE TI NEEMO 18-20: Analog Testing for Mitigation of Communication Latency during Human Space Exploration SO 2016 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 05-12, 2016 CL Big Sky, MT SP IEEE AB NASA Extreme Environment Mission Operations (NEEMO) is an underwater spaceflight analog that allows a true mission-like operational environment and uses buoyancy effects and added weight to simulate different gravity levels. Three missions were undertaken from 2014-2015, NEEMO 18-20. All missions were performed at the Florida International University's Aquarius Reef Base, an undersea research habitat. During each mission, the effects of communication latencies on operations concepts, timelines, and tasks were studied. METHODS: Twelve subjects (4 per mission) were weighed out to simulate near-zero or partial gravity extravehicular activity (EVA) and evaluated different operations concepts for integration and management of a simulated Earth-based science team (ST) to provide input and direction during exploration activities. Exploration traverses were preplanned based on precursor data. Subjects completed science-related tasks including presampling surveys, geologic-based sampling, and marine-based sampling as a portion of their tasks on saturation dives up to 4 hours in duration that were designed to simulate EVA on Mars or the moons of Mars. One-way communication latencies, 5 and 10 minutes between space and mission control, were simulated throughout the missions. Objective data included task completion times, total EVA times, crew idle time, translation time, ST assimilation time (defined as time available for ST to discuss data/imagery after data acquisition). Subjective data included acceptability, simulation quality, capability assessment ratings, and comments. RESULTS : Precursor data can be used effectively to plan and execute exploration traverse EVAs (plans included detailed location of science sites, high-fidelity imagery of the sites, and directions to landmarks of interest within a site). Operations concepts that allow for presampling surveys enable efficient traverse execution and meaningful Mission Control Center (MCC) interaction across communication latencies and can be done with minimal crew idle time. Imagery and contextual information from the EVA crew that is transmitted real-time to the intravehicular activity (IVA) crewmember(s) can be used to verify that exploration traverse plans are being executed correctly. That same data can be effectively used by MCC (across comm latency) to provide meaningful feedback and instruction to the crew regarding sampling priorities, additional tasks, and changes to the EVA timeline. Text / data capabilities are preferred over voice capabilities between MCC and IVA when executing exploration traverse plans over communication latency. C1 [Chappell, Steven P.; Beaton, Kara H.] Wyle Sci Technol & Engn Grp, Wyle HAC 37C,1290 Hercules Dr, Houston, TX 77058 USA. [Miller, Matthew J.] Georgia Inst Technol, 270 Ferst Dr,Room 416, Atlanta, GA 30332 USA. [Graff, Trevor G.] Jacobs Engn Grp, Dept Sci, 2224 Bay Area Blvd, Houston, TX 77058 USA. [Abercromby, Andrew F. J.; Gernhardt, Michael L.] NASA, 2101 NASA Pkwy, Houston, TX 77058 USA. [Halcon, Christopher] US Navy, Washington, DC USA. RP Chappell, SP (reprint author), Wyle Sci Technol & Engn Grp, Wyle HAC 37C,1290 Hercules Dr, Houston, TX 77058 USA. EM steven.p.chappell@nasa.gov; kara.h.beaton@nasa.gov; mmiller@gatech.edu; trevor.g.graff@nasa.gov; andrew.abercromby@nasa.gov; michael.l.gernhardt@nasa.gov; Chalcon08@gmail.com 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 SN 1095-323X BN 978-1-4673-7676-1 J9 AEROSP CONF PROC PY 2016 PG 12 WC Engineering, Aerospace SC Engineering GA BG3XT UT WOS:000388374902033 ER PT S AU Crouse, DF AF Crouse, David Frederic GP IEEE TI Target Track Initiation in Difficult Scenarios Using Probability-1 Homotopy Methods and Cubature Integration SO 2016 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 05-12, 2016 CL Big Sky, MT SP IEEE ID NONLINEAR EQUATION; RADAR; ALGORITHMS; LOCALIZATION; SEEKING; ROOTS; CODES; SUITE AB Probability-1 homotopy algorithms are seldom taught in standard numerical analysis classes, and, with a few exceptions, their utility in target track initiation has been largely overlooked. This paper demonstrates how such methods can be used for unbiased measurement conversion and initial target-state estimation in difficult scenarios involving non-simultaneous measurements when combined with cubature integration techniques. Scenarios considered are range-only and time-delay-of-arrival-only measurements as well as surface-wave time-delay-of-arrival-only measurements. C1 [Crouse, David Frederic] Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Crouse, DF (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM david.crouse@nrl.navy.mil NR 72 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 978-1-4673-7676-1 J9 AEROSP CONF PROC PY 2016 PG 21 WC Engineering, Aerospace SC Engineering GA BG3XT UT WOS:000388374900071 ER PT S AU Hanlon, EAS Lange, ME Keegan, BP Culton, EA Corbett, MJ Roser, JG Safbom, CP Wenger, BA Kang, JS AF Hanlon, Edward A. S. Lange, Morgan E. Keegan, Benjamin P. Culton, Eryn A. Corbett, Matthieu J. Roser, John G. Safbom, Conor P. Wenger, Benjamin A. Kang, Jin S. GP IEEE TI AMODS: Autonomous Mobile On-orbit Diagnostic System SO 2016 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 05-12, 2016 CL Big Sky, MT SP IEEE AB Researchers at the United States Naval Academy are developing an Autonomous Mobile On-orbit Diagnostic System (AMODS) which utilizes CubeSats to perform on-orbit inspections on conventional spacecraft. AMODS comprises a multiple CubeSat arrangement wherein one self-propelled transport CubeSat (BRICSat) will deliver one of several "repair" CubeSats (RSats) with manipulable arms to spacecraft for the purpose of providing diagnostic and maintenance services designed to repair or extend the life of that craft. AMODS will be validated in three phases. Phase One commenced in May 2015 with the launch of the transport module (BRICSat-P) where the effectiveness of microcathode thrusters to provide appropriate Delta V was evaluated. A second transport module (BRICSat-D), which will use data from BRICSat-P to improve thruster control and demonstrate proximity operation maneuvers using the propulsion system, will launch in September 2016. Phase Two involves the 2017 launch of the prototype repair unit, RSat-P, to test the effectiveness of the robotic manipulators, and Phase Three comprises the 2018 launch of the first fully operational Space Tug, BRICSat-T and three repair modules, RSat-1,2,3 to fully validate core functionality and on-orbit feasibility. This paper provides an overview of the entire mission. It commences with an analysis of the design of the BRICSat transfer vehicle and the results of the BRICSat-P flight experiment. The paper will introduce the process and strategic details which guide the development and integration of the transport and repair units to optimize tendering and deployment functions. It will also include a summary of the RSat design, its visual, assessment and repair proficiencies and the requirements for actuations in a space environment. Finally, it will address the methods of validating the entire AMODS system on-orbit. C1 [Hanlon, Edward A. S.; Lange, Morgan E.; Keegan, Benjamin P.; Culton, Eryn A.; Corbett, Matthieu J.; Roser, John G.; Safbom, Conor P.; Wenger, Benjamin A.; Kang, Jin S.] US Naval Acad, 590 Holloway Rd,MS 11B, Annapolis, MD 21412 USA. RP Kang, JS (reprint author), US Naval Acad, 590 Holloway Rd,MS 11B, Annapolis, MD 21412 USA. EM kang@usna.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 1095-323X BN 978-1-4673-7676-1 J9 AEROSP CONF PROC PY 2016 PG 10 WC Engineering, Aerospace SC Engineering GA BG3XT UT WOS:000388374900016 ER PT S AU Kawecki, T Roesler, G Sullivan, B Pirozzoli, J AF Kawecki, Thomas Roesler, Gordon Sullivan, Brook Pirozzoli, James GP IEEE TI Communications Considerations for Satellite Servicing in or Near-Geosynchronous Earth Orbit SO 2016 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 05-12, 2016 CL Big Sky, MT SP IEEE AB Developing a robotic servicing vehicle (RSV) capable of providing high-value, reliable services to satellites in geosynchronous Earth orbit (GEO) require solving a myriad of technical challenges and answering numerous regulatory and policy questions. One such challenge is space/ground communications. Space/ground communications present a significant challenge to the RSV designer: establishing the means by which the RSV would receive commands from and send telemetry, including video, to its ground controllers during critical servicing operations. RSV operators would require good situational awareness for safety of operations, which would require large telemetry bandwidth supporting multiple high-resolution, high frame -rate, near-simultaneous, low-latency, low-jitter video feeds. Constraints on potential RSV communications subsystem design include: a) the ability to obtain frequency allocations in the appropriate location for a given servicing event; 1)) ground station access over all GEO longitudes; c) the need to avoid electromagnetic and radio frequency (RF) interference between the RSV and the client satellite (client-sat); d) communications subsystem design impacts on the RSV; and e) communications redundancy approaches, at least for critical command functions and recovery following outages. The impact of these constraints on a number of options for communications system designs are discussed, and some ambiguities in the regulatory environment are identified. RSV system design would be highly dependent upon the desired set of customer spacecraft to be serviced, as foreign-flagged spacecraft have different spectrum allocations than U.S. spacecraft, and military spectrum allocations are different from commercial spectrum allocations. A number of communications system options are presented. Communications system hardware requirements are discussed for each option, as are the advantages and disadvantages of each approach. Proposed system concepts include the use of novel communications approaches not in widespread use today the W band and laser (free space optical) communications. Electromagnetic and RF interference between the RSV and client-sat would present a significant challenge. In addition to the transmitters/receivers on each vehicle, there is the potential for interference from unintentional sources (e.g., spurs, harmonics, broadband noise). There is also the possibility raised in some servicing scenarios that the same grounding path used to mitigate charging differential between the RSV and the client-sat when docked would also provide a path for interfering signals to travel between the servicer and client-sat. Steps to mitigate these sources of potential interference would be unique to each space system,and only preliminary approaches will be discussed. C1 [Kawecki, Thomas; Pirozzoli, James] Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Roesler, Gordon] Def Adv Res Projects Agcy, 675 North Randolph St, Arlington, VA 22203 USA. [Sullivan, Brook] Sullivan Analyt & Tech Serv LLC, SETA, Oakton, VA 22124 USA. RP Kawecki, T (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM tom.kawecki@nrl.navy.mil; gordon.roesler@darpa.mil; brook.sullivan.ctr@darpa.mil; james.pirozzoli@nrl.navy.mil NR 5 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 978-1-4673-7676-1 J9 AEROSP CONF PROC PY 2016 PG 11 WC Engineering, Aerospace SC Engineering GA BG3XT UT WOS:000388374903024 ER PT S AU Nadella, BK Avvari, GV Kumar, A Mishra, M Sidoti, D Pattipati, KR Sibley, C Coyne, J Monfort, SS AF Nadella, Bala Kishore Avvari, Gopi Vinod Kumar, Avnish Mishra, Manisha Sidoti, David Pattipati, Krishna R. Sibley, Ciara Coyne, Joseph Monfort, Samuel S. GP IEEE TI Proactive Decision Support for Dynamic Assignment and Routing of Unmanned Aerial Systems SO 2016 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 05-12, 2016 CL Big Sky, MT SP IEEE ID ALGORITHM AB Unmanned Aerial System (UAS) missions are executed by teams of operators with highly specialized training and roles; however, the task demands on each operator are highly variable, often resulting in uneven workloads among operators and sometimes in mishaps. Therefore, there is a need to develop anticipative and effective decision support algorithms that permit the evaluation of courses of action (COAs), while assuring that operators are attending to the right task at the right time and that task demands do not exceed the operator's cognitive capabilities in dynamic multi-mission environments. Motivated by the need to assist UAS operators in efficiently managing their workloads, this paper develops algorithms for the dynamic scheduling of UAS tasks by providing efficient COA recommendations in an unobtrusive manner. The dynamic scheduling of a set of UASs to search for targets with varying rewards is an NP-hard problem. We model this problem as an extension to the open vehicle routing problem (OVRP). Extensions to OVRP include risk propensity of human decision making, task deadlines, and multiple vehicle types. UAS operators would benefit greatly from the COA recommendations and the algorithms proposed in this paper by a) enhancing rapid planning and re-planning capabilities; b) proactive allocation of UASs, while balancing operator workloads; and c) adapting plans as new targets of opportunity appear or information is updated about a target and/or UAS. The proposed algorithms are embedded in the Supervisory Control Operations User Testbed (SCOUT (TM)), an experimental paradigm developed by the Naval Research Laboratory-Washington DC. C1 [Nadella, Bala Kishore; Avvari, Gopi Vinod; Kumar, Avnish; Mishra, Manisha; Sidoti, David; Pattipati, Krishna R.] Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA. [Sibley, Ciara; Coyne, Joseph] Naval Res Lab, Washington, DC 20375 USA. [Monfort, Samuel S.] George Mason Univ, Fairfax, VA 22030 USA. RP Pattipati, KR (reprint author), Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA. EM krishna@engr.uconn.edu NR 19 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 978-1-4673-7676-1 J9 AEROSP CONF PROC PY 2016 PG 11 WC Engineering, Aerospace SC Engineering GA BG3XT UT WOS:000388374903023 ER PT S AU Winternitz, LMB Mitchell, JW Hassouneh, MA Valdez, JE Price, SR Semper, SR Yu, WH Ray, PS Wood, KS Arzoumanian, Z Gendreau, KC AF Winternitz, Luke M. B. Mitchell, Jason W. Hassouneh, Munther A. Valdez, Jennifer E. Price, Samuel R. Semper, Sean R. Yu, Wayne H. Ray, Paul S. Wood, Kent S. Arzoumanian, Zaven Gendreau, Keith C. GP IEEE TI SEXTANT X-ray Pulsar Navigation Demonstration: Flight System and Test Results SO 2016 IEEE AEROSPACE CONFERENCE SE IEEE Aerospace Conference Proceedings LA English DT Proceedings Paper CT IEEE Aerospace Conference CY MAR 05-12, 2016 CL Big Sky, MT SP IEEE AB The Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a technology demonstration enhancement to the Neutron-star Interior Composition Explorer (NICER) mission. NICER is a NASA Explorer Mission of Opportunity that will be hosted on the International Space Station (ISS). SEXTANT will, for the first time, demonstrate real-time, on-board X-ray Pulsar Navigation (XNAV), a significant milestone in the quest to establish a GPS-like navigation capability available throughout our Solar System and beyond. This paper gives an overview of the SEXTANT system architecture and describes progress prior to environmental testing of the NICER flight instrument. It provides descriptions and development status of the SEXTANT flight software and ground system, as well as detailed description and results from the flight software functional and performance testing within the highfidelity Goddard Space Flight Center (GSFC) X-ray Navigation Laboratory Testbed (GXLT) software and hardware simulation environment. Hardware-in-the-loop simulation results are presented, using the engineering model of the NICER timing electronics and the GXLT pulsar simulator-the GXLT precisely controls NASA GSFC's unique Modulated X-ray Source to produce X-rays that make the NICER detector electronics appear as if they were aboard the ISS viewing a sequence of millisecond pulsars. C1 [Winternitz, Luke M. B.; Mitchell, Jason W.; Hassouneh, Munther A.; Valdez, Jennifer E.; Price, Samuel R.; Semper, Sean R.; Yu, Wayne H.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Ray, Paul S.; Wood, Kent S.] Naval Res Lab, Washington, DC 20375 USA. [Arzoumanian, Zaven] NASA GSFC USRA, Greenbelt, MD 20771 USA. [Gendreau, Keith C.] NASA GSFC, Code 662, Greenbelt, MD 20771 USA. RP Winternitz, LMB (reprint author), NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. EM luke.b.winternitz@nasa.gov 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 1095-323X BN 978-1-4673-7676-1 J9 AEROSP CONF PROC PY 2016 PG 12 WC Engineering, Aerospace SC Engineering GA BG3XT UT WOS:000388374903060 ER PT J AU Barsoum, RG AF Barsoum, Roshdy G. BE Woodley, C Cullis, I TI PHASE TRANSFORMATIONS IN GLASS ASSOCIATED WITH HYPER-VELOCITY IMPACT AND IMPLICATIONS IN CONSTITUTIVE MODELING SO 29TH INTERNATIONAL SYMPOSIUM ON BALLISTICS, VOLS 1 AND 2 LA English DT Proceedings Paper CT 29th International Symposium on Ballistics CY MAY 09-13, 2016 CL Edinburgh, SCOTLAND SP Natl Def Ind Assoc, Int Ballist Soc C1 [Barsoum, Roshdy G.] Off Naval Res, 875 North Randolph St, Arlington, VA 22217 USA. RP Barsoum, RG (reprint author), Off Naval Res, 875 North Randolph St, Arlington, VA 22217 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU DESTECH PUBLICATIONS, INC PI LANCASTER PA 439 DUKE STREET, LANCASTER, PA 17602-4967 USA BN 978-1-60595-317-5 PY 2016 BP 1004 EP 1010 PG 7 WC Mechanics; Physics, Applied SC Mechanics; Physics GA BG4OO UT WOS:000389021400115 ER PT J AU Freitas, CJ Grimm, MV Bigger, RP Mackiewicz, JF AF Freitas, Christopher J. Grimm, Matthew V. Bigger, Rory P. Mackiewicz, James F. BE Woodley, C Cullis, I TI INJURY CHARACTERIZATION DUE TO PENETRATING PROJECTILES SO 29TH INTERNATIONAL SYMPOSIUM ON BALLISTICS, VOLS 1 AND 2 LA English DT Proceedings Paper CT 29th International Symposium on Ballistics CY MAY 09-13, 2016 CL Edinburgh, SCOTLAND SP Natl Def Ind Assoc, Int Ballist Soc AB Simulation tools using fast-running model forms for armor ballistic performance and penetrating injury response, coupled to Monte-Carlo based probabilistic methods to account for the inherently statistical nature of threat engagement with a PPE armor solution and penetrating injury dynamics are being developed. A critical element to the evolving predictive capability is development of improved model forms that account for the complex interactions between the threat, armor, and human body. These improved models require validation data from appropriate experiments to insure accurate and representative simulation results, as well as the insights gained through analysis of experimental data. Thus to support the development of improved behind armor injury models, an experimental methodology was developed and executed in which the extent of injuries resulting from residual velocities of ballistic projectiles were directly measured; specifically dynamic pressure and strain during the wound cavity formation, collapse, and final depth of projectile penetration. C1 [Freitas, Christopher J.; Grimm, Matthew V.; Bigger, Rory P.] Southwest Res Inst, Dept Engn Dynam, 6220 Culebra Rd, San Antonio, TX 78238 USA. [Mackiewicz, James F.] US Naval Hlth Res Ctr, Special Projects Dept, Duty Stn Natick NCTRF, Natick, MA USA. RP Freitas, CJ (reprint author), Southwest Res Inst, Dept Engn Dynam, 6220 Culebra Rd, San Antonio, TX 78238 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU DESTECH PUBLICATIONS, INC PI LANCASTER PA 439 DUKE STREET, LANCASTER, PA 17602-4967 USA BN 978-1-60595-317-5 PY 2016 BP 1220 EP 1232 PG 13 WC Mechanics; Physics, Applied SC Mechanics; Physics GA BG4OO UT WOS:000389021400140 ER PT J AU Garfield, J AF Garfield, Josiah BE Woodley, C Cullis, I TI BULLET IMPACT AND SLOW COOK-OFF ENHANCEMENT FOR A SMALL THERMOBARIC WARHEAD SO 29TH INTERNATIONAL SYMPOSIUM ON BALLISTICS, VOLS 1 AND 2 LA English DT Proceedings Paper CT 29th International Symposium on Ballistics CY MAY 09-13, 2016 CL Edinburgh, SCOTLAND SP Natl Def Ind Assoc, Int Ballist Soc AB Enhancements to a small thermobaric warhead were incorporated to improve the Insensitive Munition (IM) response to Bullet Impact (BI) and Slow Cook-Off (SCO). The munition currently does not receive a passing reaction for BI, SCO, or Fragment Impact (FI). The original plan was to address BI and SCO, the two worst ratings, however cost savings were realized and FI was also tested. IM technology integration included replacement of the baseline thermobaric material with a shock mitigating reactive lining system and the integration of a modified aft closure and aft closure vent cover. The warhead with the IM technology integration resulted in passing reactions in all three tests, BI, SCO, and FI. In addition to improving the IM response, it was important to maintain or potentially improve the thermobaric component of this system. The thermobaric performance was testing through the static detonation of the warheads in an instrumented two-room structure. While the predicted Blast Overpressure (BOP) lethality of the baseline verses the IM enhanced warhead were similar, the IM enhanced warhead exhibited a reduction in thermobaric performance. C1 [Garfield, Josiah] Naval Air Warfare Ctr, Weap Div, 1 Adm Circle Stop 1002, China Lake, CA 93555 USA. RP Garfield, J (reprint author), Naval Air Warfare Ctr, Weap Div, 1 Adm Circle Stop 1002, China Lake, CA 93555 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU DESTECH PUBLICATIONS, INC PI LANCASTER PA 439 DUKE STREET, LANCASTER, PA 17602-4967 USA BN 978-1-60595-317-5 PY 2016 BP 1250 EP 1257 PG 8 WC Mechanics; Physics, Applied SC Mechanics; Physics GA BG4OO UT WOS:000389021400142 ER PT J AU Grover, J Tompkins, B AF Grover, Jared Tompkins, Bob BE Woodley, C Cullis, I TI MODIFYING PREFORMED FRAGMENT DISPERSION BY FORM FACTOR SO 29TH INTERNATIONAL SYMPOSIUM ON BALLISTICS, VOLS 1 AND 2 LA English DT Proceedings Paper CT 29th International Symposium on Ballistics CY MAY 09-13, 2016 CL Edinburgh, SCOTLAND SP Natl Def Ind Assoc, Int Ballist Soc C1 [Grover, Jared; Tompkins, Bob] Naval Air Warfare Ctr, Weap Div, Warhead Dev Branch, 2400 East Pilot Plant Rd Stop 5402, China Lake, CA 93555 USA. RP Grover, J (reprint author), Naval Air Warfare Ctr, Weap Div, Warhead Dev Branch, 2400 East Pilot Plant Rd Stop 5402, China Lake, CA 93555 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU DESTECH PUBLICATIONS, INC PI LANCASTER PA 439 DUKE STREET, LANCASTER, PA 17602-4967 USA BN 978-1-60595-317-5 PY 2016 BP 1676 EP 1684 PG 9 WC Mechanics; Physics, Applied SC Mechanics; Physics GA BG4OO UT WOS:000389021400185 ER PT J AU Barsoum, RG AF Barsoum, Roshdy G. BE Woodley, C Cullis, I TI PHASE TRANSFORMATIONS IN GLASS ASSOCIATED WITH HYPER-VELOCITY IMPACT AND IMPLICATIONS IN CONSTITUTIVE MODELING SO 29TH INTERNATIONAL SYMPOSIUM ON BALLISTICS, VOLS 1 AND 2 LA English DT Proceedings Paper CT 29th International Symposium on Ballistics CY MAY 09-13, 2016 CL Edinburgh, SCOTLAND SP Natl Def Ind Assoc, Int Ballist Soc C1 [Barsoum, Roshdy G.] Off Naval Res, 875 North Randolph St, Arlington, VA 22217 USA. RP Barsoum, RG (reprint author), Off Naval Res, 875 North Randolph St, Arlington, VA 22217 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU DESTECH PUBLICATIONS, INC PI LANCASTER PA 439 DUKE STREET, LANCASTER, PA 17602-4967 USA BN 978-1-60595-317-5 PY 2016 BP 2417 EP 2423 PG 7 WC Mechanics; Physics, Applied SC Mechanics; Physics GA BG4OO UT WOS:000389021400262 ER PT J AU Barsoum, RG Dudt, PJ Qadri, S Ferrando, W AF Barsoum, Roshdy G. Dudt, Philip J. Qadri, Syed Ferrando, William BE Woodley, C Cullis, I TI POLYMORPHIC ACTIVITY GENERATED IN SODA-LIME GLASS AT HYPER-VELOCITY IMPACT SO 29TH INTERNATIONAL SYMPOSIUM ON BALLISTICS, VOLS 1 AND 2 LA English DT Proceedings Paper CT 29th International Symposium on Ballistics CY MAY 09-13, 2016 CL Edinburgh, SCOTLAND SP Natl Def Ind Assoc, Int Ballist Soc ID DENSITY AB Polymorphic transformations are key in assessing the unusual response of glassy materials to hyper-velocity particle impacts. Examination of soda-lime glass impacted under hyper-velocity conditions indicates formation of Stishovite, a high-density polymorph and formation of other more common crystalline silica phases, alpha-quartz and beta-crystobalite. These findings along with molecular dynamic computer analysis support further understanding of these interactions for compounding new glass chemistries and predicting performance against a wider variety of impactors. These findings can also help elucidate interpretations of meteoric minerals that may have been vitrified in reaching the earth or evaluation of other recovered space materials in the future. C1 [Barsoum, Roshdy G.] Off Naval Res, 875 N Randolph St, Arlington, VA 22217 USA. [Dudt, Philip J.; Ferrando, William] Naval Surface Warfare Ctr Carderock, 9500 MacArthur Blvd, West Bethesda, MD USA. [Qadri, Syed] Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Barsoum, RG (reprint author), Off Naval Res, 875 N Randolph St, Arlington, VA 22217 USA. NR 19 TC 0 Z9 0 U1 0 U2 0 PU DESTECH PUBLICATIONS, INC PI LANCASTER PA 439 DUKE STREET, LANCASTER, PA 17602-4967 USA BN 978-1-60595-317-5 PY 2016 BP 2477 EP 2487 PG 11 WC Mechanics; Physics, Applied SC Mechanics; Physics GA BG4OO UT WOS:000389021400269 ER PT S AU Newsom, B Mittu, R Livingston, MA Russell, S Decker, JW Leadbetter, E Moskowitz, IS Gilliam, A Sibley, C Coyne, J Abramson, M AF Newsom, Benjamin Mittu, Ranjeev Livingston, Mark A. Russell, Stephen Decker, Jonathan W. Leadbetter, Eric Moskowitz, Ira S. Gilliam, Antonio Sibley, Ciara Coyne, Joseph Abramson, Myriam BE Snidaro, L Garcia, J Llinas, J Blasch, E TI Modeling User Behaviors to Enable Context-Aware Proactive Decision Support SO CONTEXT-ENHANCED INFORMATION FUSION: BOOSTING REAL-WORLD PERFORMANCE WITH DOMAIN KNOWLEDGE SE Advances in Computer Vision and Pattern Recognition LA English DT Article; Book Chapter DE Context-driven; Decision making; Dynamic modeling; Operational modality; Temporal reasoning AB The problem of automatically recognizing a user's operational context, the implications of its shifting properties, and reacting in a dynamic manner are at the core of mission intelligence and decision making. Environments such as the OZONE Widget Framework (http:// www. owfgoss. org) (OWF) provide the foundation for capturing the objectives, actions, and activities of both the mission analyst and the decision maker. By utilizing a "context container" that envelops an OZONE Application, we hypothesize that both user action and intent can be used to characterize user context with respect to operational modality (strategic, tactical, opportunistic, or random). As the analyst moves from one operational modality to another, we propose that information visualization techniques should adapt and present data and analysis pertinent to the new modality and to the trend of the shift. As a system captures the analyst's actions and decisions in response to the new visualizations, the context container has the opportunity to assess the analyst's perception of the information value, risk, uncertainty, prioritization, projection, and insight with respect to the current context stage. This paper will describe a conceptual architecture for an adaptive work environment for inferring user behavior and interaction within the OZONE framework, in order to provide the decision C1 [Newsom, Benjamin] Next Century Corp, 7075 Samuel Morse Dr, Columbia, MD 21046 USA. [Mittu, Ranjeev; Livingston, Mark A.; Decker, Jonathan W.; Leadbetter, Eric; Moskowitz, Ira S.; Gilliam, Antonio; Sibley, Ciara; Coyne, Joseph; Abramson, Myriam] Naval Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA. [Russell, Stephen] Army Res Lab, 2800 Powder Mill Rd, Adelphi, MD 20783 USA. RP Newsom, B (reprint author), Next Century Corp, 7075 Samuel Morse Dr, Columbia, MD 21046 USA. EM ben.newsom@nextcentury.com NR 55 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG LONDON LTD PI GODALMING PA SWEETAPPLE HOUSE CATTESHALL RD FARNCOMBE, GODALMING GU7 1NH, SURREY, ENGLAND SN 2191-6586 BN 978-3-319-28971-7; 978-3-319-28969-4 J9 ADV COMPUT VIS PATT PY 2016 BP 231 EP 267 DI 10.1007/978-3-319-28971-7_10 D2 10.1007/978-3-319-28971-7 PG 37 WC Computer Science, Artificial Intelligence SC Computer Science GA BG2YJ UT WOS:000387776900011 ER PT J AU Mandal, B Stanica, P Gangopadhyay, S Pasalic, E AF Mandal, Bimal Stanica, Pantelimon Gangopadhyay, Sugata Pasalic, Enes TI An Analysis of the C Class of Bent Functions SO FUNDAMENTA INFORMATICAE LA English DT Article DE Boolean functions; bent functions; permutation polynomials ID F-2(N) AB Two (so-called C; D) classes of permutation-based bent Boolean functions were introduced by Carlet [4] two decades ago, but without specifying some explicit construction methods for their construction (apart from the subclass D-0). In this article, we look in more detail at the C class, and derive some existence and nonexistence results concerning the bent functions in the C class for many of the known classes of permutations over F-2n. Most importantly, the existence results induce generic methods of constructing bent functions in class C which possibly do not belong to the completed Maiorana-McFarland class. The question whether the specific permutations and related subspaces we identify in this article indeed give bent functions outside the completed Maiorana-McFarland class remains open. C1 [Mandal, Bimal] Indian Inst Technol Roorkee, Dept Math, Roorkee, Uttar Pradesh, India. [Stanica, Pantelimon] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA. [Gangopadhyay, Sugata] Indian Inst Technol Roorkee, Dept Comp Sci & Engn, Roorkee, Uttar Pradesh, India. [Pasalic, Enes] Univ Primorska, Fac Math Nat Sci & Informat Technol Famnit, Koper, Slovenia. RP Mandal, B (reprint author), Indian Inst Technol Roorkee, Dept Math, Roorkee, Uttar Pradesh, India. EM bimalmandal90@gmail.com; pstanica@nps.edu; gsugata@gmail.com; enes.pasalic6@gmail.com FU VSP [N62909-13-1-V105]; IIT Roorkee FX We are thankful to the reviewers for very useful comments that helped us a lot to significantly improve both technical and editorial quality of the manuscript. Part of this paper was written during an enjoyable visit of S.G. at the Applied Mathematics Department of Naval Postgraduate School, supported in part by VSP award no. N62909-13-1-V105 (Department of the US Navy, ONR-Global). B. M. thanks IIT Roorkee for supporting his research. NR 20 TC 0 Z9 0 U1 0 U2 0 PU IOS PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 0169-2968 EI 1875-8681 J9 FUND INFORM JI Fundam. Inform. PY 2016 VL 146 IS 3 BP 271 EP 292 DI 10.3233/FI-2016-1386 PG 22 WC Computer Science, Software Engineering; Mathematics, Applied SC Computer Science; Mathematics GA ED2YV UT WOS:000388717000003 ER PT S AU Michopoulos, JG Shahinpoor, M Iliopoulos, A AF Michopoulos, John G. Shahinpoor, Mohsen Iliopoulos, Athanasios BE Shahinpoor, M TI A Continuum Multiphysics Theory for Electroactive Polymers and Ionic Polymer Metal Composites SO IONIC POLYMER METAL COMPOSITES (IPMCS): SMART MULTI-FUNCTIONAL MATERIALS AND ARTIFICIAL MUSCLES, VOL 2 SE RSC Smart Materials LA English DT Article; Book Chapter ID ELECTROMECHANICAL TRANSDUCTION; IRREVERSIBLE-PROCESSES; RECIPROCAL RELATIONS C1 [Michopoulos, John G.] Naval Res Lab, Computat Multiphys Syst Lab, Code 6394, Washington, DC 20374 USA. [Shahinpoor, Mohsen] Univ Maine, Dept Mech Engn, Orono, ME 04469 USA. [Iliopoulos, Athanasios] George Mason Univ, Computat Mat Sci Ctr, Fairfax, VA 22030 USA. RP Michopoulos, JG (reprint author), Naval Res Lab, Computat Multiphys Syst Lab, Code 6394, Washington, DC 20374 USA. NR 40 TC 0 Z9 0 U1 0 U2 0 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, CAMBRIDGE CB4 4WF, CAMBS, ENGLAND SN 2046-0066 BN 978-1-78262-723-4; 978-1-78262-721-0 J9 RSC SMART MATER PY 2016 IS 18 BP 257 EP 284 PG 28 WC Engineering, Mechanical; Materials Science, Multidisciplinary; Materials Science, Biomaterials; Physics, Applied; Polymer Science SC Engineering; Materials Science; Physics; Polymer Science GA BG2IQ UT WOS:000387402800008 ER PT S AU Michopoulos, JG Shahinpoor, M Iliopoulos, A AF Michopoulos, John G. Shahinpoor, Moshen Iliopoulos, Athanasios BE Shahinpoor, M TI Multiphysics Modeling of Nonlinear Ionic Polymer Metal Composite Plates SO IONIC POLYMER METAL COMPOSITES (IPMCS): SMART MULTI-FUNCTIONAL MATERIALS AND ARTIFICIAL MUSCLES, VOL 2 SE RSC Smart Materials LA English DT Article; Book Chapter C1 [Michopoulos, John G.] Naval Res Lab, Computat Multiphys Syst Lab, Code 6394, Washington, DC 20374 USA. [Shahinpoor, Moshen] Univ Maine, Dept Mech Engn, Orono, ME 04469 USA. [Iliopoulos, Athanasios] George Mason Univ, Computat Mat Sci Ctr, Fairfax, VA 22030 USA. RP Michopoulos, JG (reprint author), Naval Res Lab, Computat Multiphys Syst Lab, Code 6394, Washington, DC 20374 USA. NR 26 TC 0 Z9 0 U1 0 U2 0 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, CAMBRIDGE CB4 4WF, CAMBS, ENGLAND SN 2046-0066 BN 978-1-78262-723-4; 978-1-78262-721-0 J9 RSC SMART MATER PY 2016 IS 18 BP 285 EP 310 PG 26 WC Engineering, Mechanical; Materials Science, Multidisciplinary; Materials Science, Biomaterials; Physics, Applied; Polymer Science SC Engineering; Materials Science; Physics; Polymer Science GA BG2IQ UT WOS:000387402800009 ER PT B AU Ioup, GE Ioup, JW Sidorovskaia, NA Tiemann, CO Kuczaj, SA Ackleh, AS Newcomb, JJ Ma, BL Paulos, R Ekimov, A Rayborn, GH Stephens, JM Tashmukhambetov, AM AF Ioup, George E. Ioup, Juliette W. Sidorovskaia, Natalia A. Tiemann, Christopher O. Kuczaj, Stan A. Ackleh, Azmy S. Newcomb, Joal J. Ma, Baoling Paulos, Robin Ekimov, Alexander Rayborn, Grayson H., Jr. Stephens, James M. Tashmukhambetov, Arslan M. BE Au, WWL Lammers, MO TI Environmental Acoustic Recording System (EARS) in the Gulf of Mexico SO LISTENING IN THE OCEAN: NEW DISCOVERIES AND INSIGHTS ON MARINE LIFE FROM AUTONOMOUS PASSIVE ACOUSTIC RECORDERS SE Modern Acoustics and Signal Processing LA English DT Article; Book Chapter ID WHALES PHYSETER-MACROCEPHALUS; FEMALE SPERM-WHALES; BEAKED-WHALES; CLICK-TRAINS; TIME DIFFERENCE; BEAM PATTERN; BROAD-BAND; LOCALIZATION; ECHOLOCATION; COMMUNICATION AB The Littoral Acoustic Demonstration Center (LADC) was formed in early 2001 to utilize Environmental Acoustic Recording System (EARS) buoys developed by the Naval Oceanographic Office (NAVOCEANO) which has provided technical guidance and support to LADC. The purpose of LADC is to make environmental measurements, which is not part of the mission of NAVOCEANO. This chapter describes the Gulf of Mexico marine mammal measurements and related data analysis of LADC. LADC has also used the buoys to characterize the three-dimensional acoustic field of a seismic airgun array and to analyze the noise due to nearby storms. LADC is a consortium of scientists from universities and the U. S. Navy. The following institutions are or have been represented: initially, the University of New Orleans, the University of Southern Mississippi, and the Naval Research Laboratory-Stennis Space Center; and then the University of Louisiana at Lafayette, the Applied Research Laboratories at the University of Texas at Austin, and Oregon State University. The scientists are listed in the first section of the chapter. A technical overview of EARS technology is given in Sect. 6.2. The current Generation 2 EARS buoys can record four channels of up to 25 kHz each or one channel up to 96 kHz. LADC has conducted marine mammal experiments in the Gulf of Mexico in 2001, 2002, 2007, and 2010. The 2007 experiments were at sites 9 and 23 miles from the Macondo Well Oil Spill. These sites as well as the 2001 and 2002 sites were recorded in the 2010 experiment to measure changes related to earlier measurements. LADC has also done seismic airgun array experiments in 2003 and 2007. The marine mammal experiments are summarized in Sect. 3, where experiments in the Mediterranean Sea, which had LADC participation, are also listed. The remaining Sects. 6.4 through 6.11 describe the analysis to date of LADC data and also the analysis by LADC scientists of workshop data for detection, classification, and localization purposes. Section 6.4 describes sperm whale click structure analysis for click-train demarcation and identification of individual whales. The tendency of whales diving together to establish different cadences for their echolocation clicks to keep from interfering with each other is presented in Sect. 6.5. The identification of individual whales by clustering echolocation clicks of sperm and beaked whales and coda clicks of sperm whales is discussed in Sect. 6.6. The application of click change detection to know if the same or a different whale are speaking on successive clicks is described in Sect. 6.7. This method allows one to follow a turning sperm whale. A technique for localizing individual clicking whales is presented in Sect. 6.8. The integration of the above techniques is discussed in Sect. 6.9, which also suggests how whales might identify each other. Sperm whale coda classification and repertoire analysis are the subject of Sect. 6.10. Finally, statistical modeling for population estimation is given in Sect. 6.11. C1 [Ioup, George E.; Ioup, Juliette W.; Tashmukhambetov, Arslan M.] Univ New Orleans, Dept Phys, New Orleans, LA 70148 USA. [Sidorovskaia, Natalia A.] Univ Louisiana Lafayette, Dept Phys, POB 43680, Lafayette, LA 70504 USA. [Tiemann, Christopher O.] Univ Texas Austin, Appl Res Labs, Austin, TX 78758 USA. [Tiemann, Christopher O.] R2Sonic LLC, 5307 Ind Oaks Blvd,Suite 120, Austin, TX 78735 USA. [Kuczaj, Stan A.; Paulos, Robin] Univ Southern Mississippi, Dept Psychol, Marine Mammal Behav & Cognit Lab, OMH 231, Hattiesburg, MS 39406 USA. [Ackleh, Azmy S.] Univ Louisiana Lafayette, RP Authement Coll Sci, Lafayette, LA 70504 USA. [Ackleh, Azmy S.] Univ Louisiana Lafayette, Dept Math, Lafayette, LA 70504 USA. [Newcomb, Joal J.] Naval Res Lab, Stennis Space Ctr, MS 39529 USA. [Newcomb, Joal J.] Naval Oceanog Off, Stennis Space Ctr, MS 39522 USA. [Ma, Baoling] Millersville Univ Pennsylvania, Dept Math, Millersville, PA 17551 USA. [Ekimov, Alexander] Univ Mississippi, Natl Ctr Phys Acoust, Oxford, MS 38677 USA. [Rayborn, Grayson H., Jr.; Stephens, James M.] Univ Southern Mississippi, Dept Phys & Astron, Hattiesburg, MS 39406 USA. [Stephens, James M.] Signal Res Ctr, Hattiesburg, MS 39406 USA. [Stephens, James M.] Southwest Mississippi Community Coll, Div Math & Sci, Summit, MS 39666 USA. [Tashmukhambetov, Arslan M.] LLOG Explorat Co, 1001 Ochsner Blvd,Suite 200, Covington, LA 70433 USA. RP Ioup, GE (reprint author), Univ New Orleans, Dept Phys, New Orleans, LA 70148 USA. EM geioup@uno.edu NR 99 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-1-4939-3176-7; 978-1-4939-3175-0 J9 MOD ACOUST SIGN PROC PY 2016 BP 117 EP 162 DI 10.1007/978-1-4939-3176-7_6 D2 10.1007/978-1-4939-3176-7 PG 46 WC Acoustics; Engineering, Electrical & Electronic; Marine & Freshwater Biology SC Acoustics; Engineering; Marine & Freshwater Biology GA BG4HX UT WOS:000388838600008 ER PT B AU Moretti, D Morrissey, R Jarvis, S Shaffer, J AF Moretti, David Morrissey, Ronald Jarvis, Susan Shaffer, Jessica BE Au, WWL Lammers, MO TI Findings from US Navy Hydrophone Ranges SO LISTENING IN THE OCEAN: NEW DISCOVERIES AND INSIGHTS ON MARINE LIFE FROM AUTONOMOUS PASSIVE ACOUSTIC RECORDERS SE Modern Acoustics and Signal Processing LA English DT Article; Book Chapter ID BLAINVILLES BEAKED-WHALES; MESOPLODON-DENSIROSTRIS AB The U.S. Navy maintains several instrumented ranges equipped with large arrays of bottom-mounted hydrophones that are typically used to track undersea vehicles. The major ranges include the Atlantic Undersea Test and Evaluation Center (AUTEC) located in the Bahamas, the Southern California Offshore Range (SCORE) located off San Clemente Island, and the Pacific Missile Range Facility (PMRF) located off the western side of Kauai, HI. Each of these ranges provides tracking arrays covering an area in excess of 1200 km(2). These hydrophone arrays are being used to develop marine mammal passive acoustic detection, classification, localization, and density estimation methods. Hardware systems installed at all three facilities allow real-time monitoring of vocalizing marine mammals. Using these systems, Blainville's beaked whales have been detected at AUTEC and PMRF. Cuvier's beaked whales have been detected at SCORE and to a lesser extent at AUTEC. These "sonar sensitive" species are present despite the repeated use of sonar. Based on passive acoustics, the movement of these species in response to sonar has been documented. By combining passive acoustic beaked whale and sonar data with AUTEC ship track data, a risk function for Blainville's beaked whales was developed. In addition, by combining hydrophone with recording tag data, the beam pattern and source level of Blainville's beaked whale were measured along with the system's detection function. This enabled the development of passive acoustic density estimation algorithms. These algorithms are being applied to the long-term, in situ monitoring of beaked whale population at all three facilities. C1 [Moretti, David; Morrissey, Ronald; Jarvis, Susan; Shaffer, Jessica] Naval Undersea Warfare Ctr, Newport, RI 02841 USA. RP Moretti, D (reprint author), Naval Undersea Warfare Ctr, Newport, RI 02841 USA. EM david.moretti@navy.mil NR 18 TC 0 Z9 0 U1 2 U2 2 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-1-4939-3176-7; 978-1-4939-3175-0 J9 MOD ACOUST SIGN PROC PY 2016 BP 239 EP 256 DI 10.1007/978-1-4939-3176-7_10 D2 10.1007/978-1-4939-3176-7 PG 18 WC Acoustics; Engineering, Electrical & Electronic; Marine & Freshwater Biology SC Acoustics; Engineering; Marine & Freshwater Biology GA BG4HX UT WOS:000388838600012 ER PT J AU Cusick, KD Wilhelm, SW Hargraves, PE Sayler, GS AF Cusick, Kathleen D. Wilhelm, Steven W. Hargraves, Paul E. Sayler, Gary S. TI Single-cell PCR of the luciferase conserved catalytic domain reveals a unique cluster in the toxic bioluminescent dinoflagellate Pyrodinium bahamense SO AQUATIC BIOLOGY LA English DT Article DE Indian River Lagoon; Dinoflagellate; Pyrodinium bahamense; Saxitoxin; Single-cell PCR; Luciferase; Bioluminescence ID GULF-OF-CALIFORNIA; GONYAULAX-POLYEDRA; GENE; DINOPHYCEAE; SEQUENCES; SCINTILLONS; MORPHOLOGY; PARTICLES; DIVERSITY; EVOLUTION AB Pyrodinium bahamense is a toxic, bioluminescent dinoflagellate with a record of intense bloom formation in both the Atlantic-Caribbean and Indo-Pacific regions. To date, limited genetic information exists for P. bahamense in comparison to other closely related harmful algal bloom taxa such as Alexandrium, or other bioluminescent taxa such as Pyrocystis. This study utilized single-cell PCR to explore the molecular diversity of P. bahamense within the Indian River Lagoon (IRL), Florida, USA, and a bioluminescent bay in Puerto Rico. Pyrodinium-specific primers targeting a ca. 1.2-kb region of the 18S rRNA gene and degenerate primers targeting the conserved catalytic domain of the luciferase gene (lcf) were applied to single cells isolated from both geographic regions as well as single cells of clonal isolates from the IRL. Phylogenetic analysis revealed that while P. bahamense is more closely related to Alexandrium spp. at the 18S rRNA gene level, its lcf sequences are more closely related to Pyrocystis spp. than Alexandrium spp. Pyrodinium bahamense lcf sequences from the Western Atlantic formed 2 distinct clusters. These clusters were defined by a set of core amino acid substitutions, and the extent of variation was greater than that recorded between the established variants of Pyrocystis lcf. lcf sequences from an Indo-Pacific strain formed a third distinct cluster. Based on these results, the potential of lcf for use in tracking sub-populations of P. bahamense is discussed. C1 [Cusick, Kathleen D.; Wilhelm, Steven W.; Sayler, Gary S.] Univ Tennessee, Ctr Environm Biotechnol, 676 Dabney Hall, Knoxville, TN 37996 USA. [Wilhelm, Steven W.; Sayler, Gary S.] Univ Tennessee, Dept Microbiol, Knoxville, TN 37996 USA. [Sayler, Gary S.] Univ Tennessee, Dept Ecol & Evolutionary Biol, Knoxville, TN 37996 USA. [Hargraves, Paul E.; Sayler, Gary S.] Florida Atlantic Univ, Harbor Branch Oceanog Inst, Ft Pierce, FL 34946 USA. [Hargraves, Paul E.; Sayler, Gary S.] UT ORNL Joint Inst Biol Sci, Oak Ridge, TN 37831 USA. [Cusick, Kathleen D.] US Naval Res Lab, Washington, DC 20375 USA. RP Cusick, KD (reprint author), Univ Tennessee, Ctr Environm Biotechnol, 676 Dabney Hall, Knoxville, TN 37996 USA.; Cusick, KD (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM kdcusick@gmail.com FU NASA graduate student fellowship FX The authors thank Drs. Wayne Litaker and Mark Vandersea, NOAA, and Dr. Allen Place, University of Maryland, for providing the Karlodinium DNA, and Dr. Alison Buchan and Mary Hadden, University of Tennessee, for the Roseobacter DNA. We greatly appreciate the scientific advice and support of Dr. Michael Latz (UC San Diego). Many thanks to members of the Aquatic Group at the Kennedy Space Center: Doug Scheidt, Karen Holloway-Adkins, Eric Reier, and Russ Lowers, along with Greg Cusick, for water sample collection. K.D.C. was supported by a NASA graduate student fellowship. This is contribution no. 2041 from the Harbor Branch Oceanographic Institute. NR 42 TC 0 Z9 0 U1 7 U2 7 PU INTER-RESEARCH PI OLDENDORF LUHE PA NORDBUNTE 23, D-21385 OLDENDORF LUHE, GERMANY SN 1864-7790 EI 1864-7782 J9 AQUAT BIOL JI Aquat. Biol. PY 2016 VL 25 BP 139 EP 150 DI 10.3354/ab00664 PG 12 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA ED0BY UT WOS:000388509200002 ER PT J AU Sonchack, J Aviv, AJ AF Sonchack, John Aviv, Adam J. TI Exploring large scale security system reproducibility with the LESS simulator SO JOURNAL OF COMPUTER SECURITY LA English DT Article DE Data challenges; large scale security; simulation; agent based; stochastic ID INTERNET AB Many network security systems analyze large scale data collected from multiple collaborating domains or aggregated network vantage points. Scale is clearly beneficial for these systems, however it also makes them difficult to design and test. Large scale data sets can be difficult to acquire and may not contain important meta-information (e.g. ground truth). Further, their limited availability can make it extremely difficult to understand how well experimental results would reproduce in different conditions, or at different networks. In this article, we discuss using simulation to overcome these challenges. We present an augmented version of LESS, our recently proposed agent based simulator for evaluating large scale network security systems. LESS uses publicly available data sets and high level parameters to generate synthetic traffic that models large scale, multi-network scenarios. Essentially, LESS allows researchers to "scale up" the data and statistics about networks and attacks that they have access to, so that they can be used to test large scale network security systems. Researchers can also tune LESS's high level parameters to better understand the sensitivities of their systems, and the reproducibility of their results. The version of LESS that we discuss in this article is extended to allow researchers to study an additional factor of system performance related to reproducibility: deployment location; by modeling the global Internet topology at the Autonomous System level. We demonstrate the applicability and benefits of LESS by tuning it with publicly available traces and then using generated records to reproduce and extend results from several recently proposed large scale security systems. In new experiments, we use LESS to study how deployment location affects large scale security systems. Our results demonstrate that LESS can evoke realistic performance from these systems with minimal tuning and provide insight into the network and topological factors that may affect the reproducibility of their evaluations. C1 [Sonchack, John] Univ Penn, Philadelphia, PA 19104 USA. [Aviv, Adam J.] US Naval Acad, Annapolis, MD 21402 USA. RP Aviv, AJ (reprint author), US Naval Acad, Annapolis, MD 21402 USA. EM jsonch@cis.upenn.edu; aviv@usna.edu NR 35 TC 0 Z9 0 U1 0 U2 0 PU IOS PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 0926-227X EI 1875-8924 J9 J COMPUT SECUR JI J. Comput. Secur. PY 2016 VL 24 IS 5 BP 645 EP 665 DI 10.3233/JCS-160553 PG 21 WC Computer Science, Information Systems SC Computer Science GA EC5YG UT WOS:000388212600004 ER PT S AU Hyden, P McGrath, RG AF Hyden, Paul McGrath, Richard G. BE Broome, BD Hanratty, TP Hall, DL Llinas, J TI Leveraging Human Decision Making through the Optimal Management of Centralized Resources SO NEXT-GENERATION ANALYST IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Next-Generation Analyst IV CY APR 18-19, 2016 CL Baltimore, MD SP SPIE DE Resource allocation; decision making; mixed integer optimization; stochastic modeling; queuing theory AB Combining results from mixed integer optimization, stochastic modeling and queuing theory, we will advance the interdisciplinary problem of efficiently and effectively allocating centrally managed resources. Academia currently fails to address this, as the esoteric demands of each of these large research areas limits work across traditional boundaries. The commercial space does not currently address these challenges due to the absence of a profit metric. By constructing algorithms that explicitly use inputs across boundaries, we are able to incorporate the advantages of using human decision makers. Key improvements in the underlying algorithms are made possible by aligning decision maker goals with the feedback loops introduced between the core optimization step and the modeling of the overall stochastic process of supply and demand. A key observation is that human decision-makers must be explicitly included in the analysis for these approaches to be ultimately successful. Transformative access gives warfighters and mission owners greater understanding of global needs and allows for relationships to guide optimal resource allocation decisions. Mastery of demand processes and optimization bottlenecks reveals long term maximum marginal utility gaps in capabilities. C1 [Hyden, Paul] US Naval Res Lab, Washington, DC 20375 USA. [McGrath, Richard G.] US Naval Acad, Annapolis, MD 21402 USA. RP Hyden, P (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM paul.hyden@nrl.navy.mil; rmcgrath@usna.edu NR 14 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0092-8 J9 PROC SPIE PY 2016 VL 9851 AR UNSP 98510C DI 10.1117/12.2219587 PG 7 WC Optics SC Optics GA BG3ZY UT WOS:000388441000010 ER PT S AU Mannaru, P Balasingam, B Pattipati, K Sibley, C Coyne, J AF Mannaru, Pujitha Balasingam, Balakumar Pattipati, Krishna Sibley, Ciara Coyne, Joseph BE Broome, BD Hanratty, TP Hall, DL Llinas, J TI On the Use of Hidden Markov Models for Gaze Pattern Modeling SO NEXT-GENERATION ANALYST IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Next-Generation Analyst IV CY APR 18-19, 2016 CL Baltimore, MD SP SPIE DE human computer interaction; cognitive workload; gaze metrics; hidden Markov models; nearest neighbor index; NNI AB Some of the conventional metrics derived from gaze patterns (on computer screens) to study visual attention, engagement and fatigue are saccade counts, nearest neighbor index (NNI) and duration of dwells/fixations. Each of these metrics has drawbacks in modeling the behavior of gaze patterns; one such drawback comes from the fact that some portions on the screen are not as important as some other portions on the screen. This is addressed by computing the eye gaze metrics corresponding to important areas of interest (AOI) on the screen. There are some challenges in developing accurate AOI based metrics: firstly, the definition of AOI is always fuzzy; secondly, it is possible that the AOI may change adaptively over time. Hence, there is a need to introduce eye-gaze metrics that are aware of the AOI in the field of view; at the same time, the new metrics should be able to automatically select the AOI based on the nature of the gazes. In this paper, we propose a novel way of computing NNI based on continuous hidden Markov models (HMM) that model the gazes as 2D Gaussian observations (x-y coordinates of the gaze) with the mean at the center of the AOI and covariance that is related to the concentration of gazes. The proposed modeling allows us to accurately compute the NNI metric in the presence of multiple, undefined AOI on the screen in the presence of intermittent casual gazing that is modeled as random gazes on the screen. C1 [Mannaru, Pujitha; Balasingam, Balakumar; Pattipati, Krishna] Univ Connecticut, Dept Elect & Comp Engn, 371 Fairfield Way,U-4157, Storrs, CT 06269 USA. [Sibley, Ciara; Coyne, Joseph] Naval Res Lab, Warfighter Human Syst Integrat Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Balasingam, B (reprint author), Univ Connecticut, Dept Elect & Comp Engn, 371 Fairfield Way,U-4157, Storrs, CT 06269 USA. EM pujitha.mannaru@engr.uconn.edu; bala@engr.uconn.edu; krishna@engr.uconn.edu; ciara.sibley@nrl.navy.mil; joseph.coyne@nrl.navy.mil NR 12 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 978-1-5106-0092-8 J9 PROC SPIE PY 2016 VL 9851 AR UNSP 98510R DI 10.1117/12.2224190 PG 7 WC Optics SC Optics GA BG3ZY UT WOS:000388441000025 ER PT S AU Mannaru, P Balasingam, B Pattipati, K Sibley, C Coyne, J AF Mannaru, Pujitha Balasingam, Balakumar Pattipati, Krishna Sibley, Ciara Coyne, Joseph BE Broome, BD Hanratty, TP Hall, DL Llinas, J TI Cognitive Context Detection Using Pupillary Measurements SO NEXT-GENERATION ANALYST IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Next-Generation Analyst IV CY APR 18-19, 2016 CL Baltimore, MD SP SPIE DE cognitive workload; unmanned aerial systems; human computer interaction; supervisory control; pupillometry; pupillography AB In this paper, we demonstrate the use of pupillary measurements as indices of cognitive workload. We analyze the pupillary data of twenty individuals engaged in a simulated Unmanned Aerial System (UAS) operation in order to understand and characterize the behavior of pupil dilation under varying task load (i.e., workload) levels. We present three metrics that can be employed as real-time indices of cognitive workload. In addition, we develop a predictive system utilizing the pupillary metrics to demonstrate cognitive context detection within simulated supervisory control of UAS. Further, we use pupillary data collected concurrently from the left and right eye and present comparative results of the use of separate vs. combined pupillary data for detecting cognitive context. C1 [Mannaru, Pujitha; Balasingam, Balakumar; Pattipati, Krishna] Univ Connecticut, Dept Elect & Comp Engn, 371 Fairfield Way,U-4157, Storrs, CT 06269 USA. [Sibley, Ciara; Coyne, Joseph] Naval Res Lab, Warfighter Human Syst Integrat Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Balasingam, B (reprint author), Univ Connecticut, Dept Elect & Comp Engn, 371 Fairfield Way,U-4157, Storrs, CT 06269 USA. EM pujitha.mannaru@engr.uconn.edu; bala@engr.uconn.edu; krishna@engr.uconn.edu; ciara.sibley@nrl.navy.mil; joseph.coyne@nrl.navy.mil NR 11 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 978-1-5106-0092-8 J9 PROC SPIE PY 2016 VL 9851 AR UNSP 98510Q DI 10.1117/12.2224176 PG 8 WC Optics SC Optics GA BG3ZY UT WOS:000388441000024 ER PT S AU Mannaru, P Balasingam, B Pattipati, K Sibley, C Coyne, J AF Mannaru, Pujitha Balasingam, Balakumar Pattipati, Krishna Sibley, Ciara Coyne, Joseph BE Broome, BD Hanratty, TP Hall, DL Llinas, J TI Cognitive Context Detection in UAS Operators Using Eye-Gaze Patterns on Computer Screens SO NEXT-GENERATION ANALYST IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Next-Generation Analyst IV CY APR 18-19, 2016 CL Baltimore, MD SP SPIE DE unmanned aerial systems; unmanned aerial vehicles; human computer interaction; operator fatigue detection; cognitive work load; eye-gaze metrics; eye movement metrics AB In this paper, we demonstrate the use of eye-gaze metrics of unmanned aerial systems (UAS) operators as effective indices of their cognitive workload. Our analyses are based on an experiment where twenty participants performed pre-scripted UAS missions of three different difficulty levels by interacting with two custom designed graphical user interfaces (GUIs) that are displayed side by side. First, we compute several eye-gaze metrics, traditional eye movement metrics as well as newly proposed ones, and analyze their effectiveness as cognitive classifiers. Most of the eye-gaze metrics are computed by dividing the computer screen into "cells". Then, we perform several analyses in order to select metrics for effective cognitive context classification related to our specific application; the objective of these analyses are to (i) identify appropriate ways to divide the screen into cells; (ii) select appropriate metrics for training and classification of cognitive features; and (iii) identify a suitable classification method. C1 [Mannaru, Pujitha; Balasingam, Balakumar; Pattipati, Krishna] Univ Connecticut, Dept Elect & Comp Engn, 371 Fairfield Way,U-4157, Storrs, CT 06269 USA. [Sibley, Ciara; Coyne, Joseph] Naval Res Lab, Warfighter Human Syst Integrat Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Balasingam, B (reprint author), Univ Connecticut, Dept Elect & Comp Engn, 371 Fairfield Way,U-4157, Storrs, CT 06269 USA. EM pujitha.mannaru@engr.uconn.edu; bala@engr.uconn.edu; krishna@engr.uconn.edu; ciara.sibley@nrl.navy.mil; joseph.coyne@nrl.navy.mil NR 7 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0092-8 J9 PROC SPIE PY 2016 VL 9851 AR UNSP 98510F DI 10.1117/12.2224184 PG 11 WC Optics SC Optics GA BG3ZY UT WOS:000388441000013 ER PT S AU Mittu, R Lin, J Li, QZ Gao, YF Rangwala, H Shargo, P Robinson, J Rose, C Tunison, P Turek, M Thomas, S Hanselman, P AF Mittu, Ranjeev Lin, Jessica Li, Qingzhe Gao, Yifeng Rangwala, Huzefa Shargo, Peter Robinson, Joshua Rose, Carolyn Tunison, Paul Turek, Matt Thomas, Stephen Hanselman, Phil BE Broome, BD Hanratty, TP Hall, DL Llinas, J TI Foundations for Context-Aware Information Retrieval for Proactive Decision Support SO NEXT-GENERATION ANALYST IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Next-Generation Analyst IV CY APR 18-19, 2016 CL Baltimore, MD SP SPIE DE Decision support; social media; ISR; normalcy modeling; anomaly detection; user roles; geo-spatial behavior modeling AB Intelligence analysts and military decision makers are faced with an onslaught of information. From the now ubiquitous presence of intelligence, surveillance, and reconnaissance (ISR) platforms providing large volumes of sensor data, to vast amounts of open source data in the form of news reports, blog postings, or social media postings, the amount of information available to a modern decision maker is staggering. Whether tasked with leading a military campaign or providing support for a humanitarian mission, being able to make sense of all the information available is a challenge. Due to the volume and velocity of this data, automated tools are required to help support reasoned, human decisions. In this paper we describe several automated techniques that are targeted at supporting decision making. Our approaches include modeling the kinematics of moving targets as motifs; developing normalcy models and detecting anomalies in kinematic data; automatically classifying the roles of users in social media; and modeling geo-spatial regions based on the behavior that takes place in them. These techniques cover a wide-range of potential decision maker needs. C1 [Mittu, Ranjeev] US Naval Res Lab, Informat Management & Decis Architectures Branch, Div Informat Technol, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Lin, Jessica; Li, Qingzhe; Gao, Yifeng; Rangwala, Huzefa] George Mason Univ, 4400 Univ Dr, Fairfax, VA 22030 USA. [Shargo, Peter; Robinson, Joshua] BAE Syst, 4721 Emperor Blvd,Suite 330, Durham, NC USA. [Rose, Carolyn] Carnegie Mellon Univ, 5000 Forbes Ave, Pittsburgh, PA 15213 USA. [Tunison, Paul; Turek, Matt] Kitware Inc, 28 Corp Dr, Clifton Pk, NY USA. [Thomas, Stephen; Hanselman, Phil] US Air Force, Res Lab, Sensors Directorate, 2241 Avion Circle, Wright Patterson AFB, OH 45433 USA. RP Mittu, R (reprint author), US Naval Res Lab, Informat Management & Decis Architectures Branch, Div Informat Technol, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM ranjeev.mittu@nrl.navy.mil; matt.turek@kitware.com NR 18 TC 0 Z9 0 U1 3 U2 3 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0092-8 J9 PROC SPIE PY 2016 VL 9851 AR UNSP 985108 DI 10.1117/12.2231152 PG 17 WC Optics SC Optics GA BG3ZY UT WOS:000388441000007 ER PT S AU Monfort, SS Sibley, CM Coyne, JT AF Monfort, Samuel S. Sibley, Ciara M. Coyne, Joseph T. BE Broome, BD Hanratty, TP Hall, DL Llinas, J TI Using machine learning and real-time workload assessment in a high-fidelity UAV simulation environment SO NEXT-GENERATION ANALYST IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Next-Generation Analyst IV CY APR 18-19, 2016 CL Baltimore, MD SP SPIE DE mental workload; eye tracking; situation awareness; machine learning; unmanned systems ID ADAPTIVE AUTOMATION; MENTAL WORKLOAD; TASK; DILATION; VEHICLES; ENTROPY AB Future unmanned vehicle operations will see more responsibilities distributed among fewer pilots. Current systems typically involve a small team of operators maintaining control over a single aerial platform, but this arrangement results in a suboptimal configuration of operator resources to system demands. Rather than devoting the full-time attention of several operators to a single UAV, the goal should be to distribute the attention of several operators across several UAVs as needed. Under a distributed-responsibility system, operator task load would be continuously monitored, with new tasks assigned based on system needs and operator capabilities. The current paper sought to identify a set of metrics that could be used to assess workload unobtrusively and in near real-time to inform a dynamic tasking algorithm. To this end, we put 20 participants through a variable-difficulty multiple UAV management simulation. We identified a subset of candidate metrics from a larger pool of pupillary and behavioral measures. We then used these metrics as features in a machine learning algorithm to predict workload condition every 60 seconds. This procedure produced an overall classification accuracy of 78%. An automated tasker sensitive to fluctuations in operator workload could be used to efficiently delegate tasks for teams of UAV operators. C1 [Monfort, Samuel S.] George Mason Univ, 4400 Univ Dr, Fairfax, VA 22030 USA. [Sibley, Ciara M.; Coyne, Joseph T.] US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Monfort, SS (reprint author), George Mason Univ, 4400 Univ Dr, Fairfax, VA 22030 USA. NR 40 TC 0 Z9 0 U1 4 U2 4 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0092-8 J9 PROC SPIE PY 2016 VL 9851 AR UNSP 98510B DI 10.1117/12.2219703 PG 10 WC Optics SC Optics GA BG3ZY UT WOS:000388441000009 ER PT S AU Jandhyala, S Walper, SA Cargill, AA Ozual, A Daniele, MA AF Jandhyala, Sidhartha Walper, Scott A. Cargill, Allison A. Ozual, Abigail Daniele, Michael A. BE Cullum, BM Kiehl, D McLamore, ES TI Integration of biochemical sensors into wearable biomaterial platforms SO SMART BIOMEDICAL AND PHYSIOLOGICAL SENSOR TECHNOLOGY XIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Smart Biomedical and Physiological Sensor Technology XIII CY APR 18-19, 2016 CL Baltimore, MD SP SPIE DE Biosensors; Wearable Electronics; Biomaterials; Nanocellulose; Glucose Sensor; Glucose Oxidase; Amperometric; Electrochemical ID ELECTROCHEMICAL GLUCOSE BIOSENSORS; EPIDERMAL ELECTRONICS; ARRAYS; ENZYME AB With rapidly inflating healthcare costs, a limited supply of physicians and an alarming surge in lifestyle diseases, radical changes must be made to improve preventative medicine and ensure a sustainable healthcare system. A compelling solution is to equip the population with wearable health monitors to continuously record representative and actionable physiological data. Herein, we present a preliminary design and evaluation of a biochemical sensor node enabled by a substrate comprised of a nanocellulose thin-film that conforms to the skin and carries a printed sensor element. The nanocellulose layer ensures conformal and biocompatible contact with the skin, while a printed layer provides a high surface-area electrode. While the recognition/transduction element can be exchanged for many different sensing motifs, we utilize the general structure of an electrochemical glucose sensor. C1 [Jandhyala, Sidhartha; Daniele, Michael A.] North Carolina State Univ, Joint Dept Biomed Engn, Raleigh, NC 27695 USA. [Jandhyala, Sidhartha; Daniele, Michael A.] Univ N Carolina, Raleigh, NC 27695 USA. [Walper, Scott A.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. [Cargill, Allison A.] US Naval Res Lab, Naval Res Enterprise Internship Program, Washington, DC 20375 USA. [Ozual, Abigail] US Naval Res Lab, Naval Res Lab, HBCU MI Internship Program, Washington, DC 20375 USA. [Daniele, Michael A.] North Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA. RP Daniele, MA (reprint author), North Carolina State Univ, Joint Dept Biomed Engn, Raleigh, NC 27695 USA.; Daniele, MA (reprint author), Univ N Carolina, Raleigh, NC 27695 USA. EM mdaniel6@ncsu.edu NR 24 TC 0 Z9 0 U1 4 U2 4 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0104-8 J9 PROC SPIE PY 2016 VL 9863 AR UNSP 98630Q DI 10.1117/12.2226039 PG 6 WC Engineering, Biomedical; Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BG2WU UT WOS:000387732700019 ER PT B AU Holmes, JJ AF Holmes, John J. BE Dhanak, MR Xiros, NI TI Ocean Electromagnetics SO SPRINGER HANDBOOK OF OCEAN ENGINEERING LA English DT Article; Book Chapter ID HARMONIC MAGNETIC DIPOLE; FINITE DEPTH; SEA AB Even though acoustic waves can travel long distances in the sea with little attenuation, ocean electromagnetics has important applications in the areas of geophysical surveys and searches of the seafloor and sub-bottom, communications across the sea-air boundary, and high data transfer rate at short ranges. Unlike in-air propagation of electromagnetic fields, the finite conductivity of seawater results in a frequency-dependent phase velocity, attenuation, intrinsic impedance, and reflection and transmission coefficients at the ocean's surface. After giving a short summary of the electric and magnetic properties of the ocean, this chapter begins with Maxwell's equations and develops the mathematical descriptions of electromagnetic fields and dipole sources within a conducting media. The differences between plane wave reflection and transmission at the surface of fresh water and seawater are used to highlight how electromagnetic propagation within the electrically conducting ocean is so very different than the more familiar radio frequency transmissions in air. In addition, equations are presented that describe the fields from submerged electric and magnetic dipoles that are located both far and near the sea surface. These formulations are valid over the frequency range from 0 Hz to a few MHz. Finally, a brief discussion of ocean electromagnetics at optical wavelengths is given at the end of this chapter. C1 [Holmes, John J.] Naval Surface Warfare Ctr, Underwater Electromagnet Signatures & Technol Div, 9500 MacArthur Blvd, West Bethesda, MD 20817 USA. RP Holmes, JJ (reprint author), Naval Surface Warfare Ctr, Underwater Electromagnet Signatures & Technol Div, 9500 MacArthur Blvd, West Bethesda, MD 20817 USA. EM john.j.holmes@navy.mil NR 18 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-319-16649-0; 978-3-319-16648-3 PY 2016 BP 177 EP 195 D2 10.1007/978-3-319-16649-0 PG 19 WC Engineering, Ocean SC Engineering GA BF9UK UT WOS:000385959700010 ER PT B AU Bandyopadhyay, PR AF Bandyopadhyay, Promode R. BE Dhanak, MR Xiros, NI TI Highly Maneuverable Biorobotic Underwater Vehicles SO SPRINGER HANDBOOK OF OCEAN ENGINEERING LA English DT Article; Book Chapter ID CONTROL SURFACES; CONTROL-SYSTEM; FISH; HYDRODYNAMICS; ANIMALS; CIRCUIT AB After receiving only a trickle of interest over the past 50 years or so, biolocomotion has more recently attracted broader attention. In this chapter, biology-inspired highly maneuverable underwater vehicles (of approximate to 1m length scale) that have achieved some degree of maturity are reviewed. Primarily, the Naval Undersea Warfare Center (NUWC) works are described. The nonlinear theoretical foundation of animal-inspired hydrodynamics and control is summarized. Low-speed propulsion (including hovering and maneuvering), control, and integration with sensors are considered. High-lift flapping-fin propulsion technology, cycle-averaged and olivo-cerebellar temporal control, integration with interaural time-differencing bio-sonar, and basin demonstration of utility are discussed. While numerous variables affect the mechanisms and integration of actuators, controllers, and sensors, the principles of self-regulating nonlinear dynamics provide a common and simplifying framework for the development of biorobotic vehicles. The salient features of these vehicles and their control design laws are tabulated. These emergent, low-speed platforms complement existing higher speed naval capabilities and are not substitutes for any existing mature system; in this sense, their utility depends on the imaginative nature of future operation concepts - a process that is unpredictable. The greater potential of the biorobotics approach is limited by a serious lack of progress in so-called strong artificial muscle technology, as well as by a lack of understanding of nonlinear temporal control and sensing and how they should be integrated. Application to utility has been facilitated where understanding of the underlying science has been mathematically formulated, and such formulation needs to be more widely emulated. C1 [Bandyopadhyay, Promode R.] Naval Undersea Warfare Ctr, Undersea Warfare Weap Vehicles & Defens Syst Dept, 1176 Howell St, Newport, RI 02841 USA. RP Bandyopadhyay, PR (reprint author), Naval Undersea Warfare Ctr, Undersea Warfare Weap Vehicles & Defens Syst Dept, 1176 Howell St, Newport, RI 02841 USA. EM promode.bandyopadhya@navy.mil NR 54 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-319-16649-0; 978-3-319-16648-3 PY 2016 BP 281 EP 300 D2 10.1007/978-3-319-16649-0 PG 20 WC Engineering, Ocean SC Engineering GA BF9UK UT WOS:000385959700014 ER PT B AU Brizzolara, S Brizzolara, RA AF Brizzolara, Stefano Brizzolara, Robert A. BE Dhanak, MR Xiros, NI TI Autonomous Sea Surface Vehicles SO SPRINGER HANDBOOK OF OCEAN ENGINEERING LA English DT Article; Book Chapter ID COMPUTATIONAL FLUID-DYNAMICS; SHIP HYDRODYNAMICS; WAVE RESISTANCE; NAVIGATION AB Capitalizing on the experience and technology developments gained with underwater autonomous vehicles, the current research frontier in the field of autonomous marine vehicles has moved from under water to the sea surface, i.e., autonomous sea surface vehicles. Current and future perspectives of these types of autonomous vehicles are given in Sect. 13.1, with particular attention paid to US navy current interests. These were initiated a decade ago and still actively drive developments in this sector. The ability to design craft specialized for particular tasks to reach the best performance at sea, going beyond size and operational/safety limitations currently imposed by manned ships, offers unique opportunities to the naval architect. In this respect, the basic naval architecture principles that drive the selection of a type of hull with respect to operational requirements are given in the Sect. 13.3. The selection of the type of hull is a preliminary essential activity for the successful design or acquisition of an autonomous surface craft. Finally, as a practical example, Sect. 13.4 summarizes the main results of extensive research done at the MIT-iShip lab to develop a new class of autonomous unmanned surface vehicles, based on a highly specialized and optimized design of an unconventional SWATH (small waterplane area twin hull) hull, able to achieve superior performance and operational capabilities in real sea state conditions. C1 [Brizzolara, Stefano] MIT, MIT Innovat Ship Design Lab, 77 Massachusetts Ave, Cambridge, MA 02139 USA. [Brizzolara, Robert A.] Off Naval Res, Sea Platforms & Weap Div, 875 N Randolph St, Arlington, VA 22203 USA. RP Brizzolara, S (reprint author), MIT, MIT Innovat Ship Design Lab, 77 Massachusetts Ave, Cambridge, MA 02139 USA. EM stebriz@mit.edu; robert.brizzolara@navy.mil NR 62 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-319-16649-0; 978-3-319-16648-3 PY 2016 BP 323 EP 340 D2 10.1007/978-3-319-16649-0 PG 18 WC Engineering, Ocean SC Engineering GA BF9UK UT WOS:000385959700016 ER PT B AU Dean, MS AF Dean, Michael S. BE Dhanak, MR Xiros, NI TI Salvage Operations SO SPRINGER HANDBOOK OF OCEAN ENGINEERING LA English DT Article; Book Chapter AB Salvage engineering is a broad-based, interdisciplinary field. Salvage engineers must have a firm grasp on the principles of naval architecture to be able to assess the strength and stability of a damaged vessel. A working knowledge of strength of materials, mechanics, dynamics, and structures is requisite, as is some understanding of soil mechanics, fluid dynamics, coastal processes, safety engineering, and the theory and practice associated with rigging systems design and operation, pumping operations, compressed air system design and operation, metals fabrication, industrial processes, and explosive use. An effective salvage engineer will also be familiar with ship operations, deck seamanship, machinery operation, diving, and oil-spill remediation. That said, an often quoted anecdote states that: Ship salvage is a science of vague assumptions based on debatable figures from inconclusive instruments, performed with equipment of problematic accuracy by persons of doubtful reliability and of questionable mentality. The referenced publications contain thousands of pages of information developed from decades of experience and operations. Anyone undertaking marine salvage operations would be well advised to spend time within these publications to leverage the wealth of that knowledge. The material presented throughout this chapter is from a set of the United States Navy's Salvage Technical Manuals (Vol. 1-3) [42.1-3] published by Commander, Naval Sea Systems Command, Office of the Director of Ocean Engineering, Supervisor of Salvage and Diving. C1 [Dean, Michael S.] Naval Sea Syst Command, 1333 Isaac Hull Ave,SE Stop 1075, Washington, DC 20376 USA. RP Dean, MS (reprint author), Naval Sea Syst Command, 1333 Isaac Hull Ave,SE Stop 1075, Washington, DC 20376 USA. EM michael.s.dean@navy.mil NR 6 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-319-16649-0; 978-3-319-16648-3 PY 2016 BP 985 EP 1065 D2 10.1007/978-3-319-16649-0 PG 81 WC Engineering, Ocean SC Engineering GA BF9UK UT WOS:000385959700047 ER PT J AU Miller, BJ AF Miller, Brien J. BE Harrigan, P Kirschenbaum, MG TI THE APPLICATION OF STATISTICAL AND FORENSICS VALIDATION TO SIMULATION MODELING IN WARGAMES SO ZONES OF CONTROL: PERSPECTIVES ON WARGAMING SE Game Histories LA English DT Article; Book Chapter C1 [Miller, Brien J.] FAA, Real Time & Simulat Syst, Washington, DC 20591 USA. [Miller, Brien J.] NASA, Real Time & Simulat Syst, Washington, DC 20546 USA. [Miller, Brien J.] US Navy, Real Time & Simulat Syst, Washington, DC USA. RP Miller, BJ (reprint author), FAA, Real Time & Simulat Syst, Washington, DC 20591 USA.; Miller, BJ (reprint author), NASA, Real Time & Simulat Syst, Washington, DC 20546 USA.; Miller, BJ (reprint author), US Navy, Real Time & Simulat Syst, Washington, DC USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MIT PRESS PI CAMBRIDGE PA FIVE CAMBRIDGE CENTER, CAMBRIDGE, MA 02142 USA BN 978-0-262-03399-2 J9 GAME HIST PY 2016 BP 183 EP 200 PG 18 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods; Management; Operations Research & Management Science; Political Science SC Computer Science; Business & Economics; Operations Research & Management Science; Government & Law GA BG3RG UT WOS:000388166000019 ER PT J AU Bond, L AF Bond, Larry BE Harrigan, P Kirschenbaum, MG TI CREATING PERSIAN INCURSION SO ZONES OF CONTROL: PERSPECTIVES ON WARGAMING SE Game Histories LA English DT Article; Book Chapter C1 [Bond, Larry] Officer Candidate Sch, Newport, RI USA. [Bond, Larry] US Navy, Washington, DC USA. RP Bond, L (reprint author), Officer Candidate Sch, Newport, RI USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MIT PRESS PI CAMBRIDGE PA FIVE CAMBRIDGE CENTER, CAMBRIDGE, MA 02142 USA BN 978-0-262-03399-2 J9 GAME HIST PY 2016 BP 281 EP 287 PG 7 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods; Management; Operations Research & Management Science; Political Science SC Computer Science; Business & Economics; Operations Research & Management Science; Government & Law GA BG3RG UT WOS:000388166000026 ER PT S AU Jansen, RW Sletten, MA Toporkov, J Menk, S Raj, RG Rosenberg, L AF Jansen, Robert W. Sletten, Mark A. Toporkov, Jakov Menk, Steven Raj, Raghu G. Rosenberg, Luke GP VDE VERLAG GMBH TI Ocean Imaging with the NRL Multichannel SAR System SO 11TH EUROPEAN CONFERENCE ON SYNTHETIC APERTURE RADAR (EUSAR 2016) SE EUSAR Proceedings LA English DT Proceedings Paper CT 11th European Conference on Synthetic Aperture Radar (EUSAR) CY JUN 07-09, 2016 CL Hamburg, GERMANY SP ITG, VDE, AIRBUS, Fraunhofer, DLR, EUREL, URSI, DGON, IEEE GRSS, IEEE AESS, TIMES Microwave Syst, GLOBES Elektronik GMBH & CO KG ID RADAR AB The Naval Research Laboratory recently developed an X-band airborne MSAR (Multichannel Synthetic Aperture Radar) test bed system that consists of 32 along-track phase centers through the use of two transmit horns and 16 receive antennas. This system was deployed in September 2014 and again in October 2015 to perform extensive and systematic data collections on a variety of maritime targets under different environmental conditions. This paper presents a description of the system, some image results, and the results of coherent analyses to characterize a variety of moving backscatter sources; especially ships and shoaling ocean waves. C1 [Jansen, Robert W.; Sletten, Mark A.; Toporkov, Jakov; Menk, Steven; Raj, Raghu G.] Naval Res Lab, Washington, DC 20375 USA. [Rosenberg, Luke] Def Sci & Technol Grp, Canberra, ACT, Australia. RP Jansen, RW (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM jansen@nrl.navy.mil; mark.sletten@nrl.navy.mil; jakov.toporkov@nrl.navy.mil; steven.menk@nrl.navy.mil; Raghu.raj@nrl.navy.mil; Luke.Rosenberg@dsto.defence.gov.au NR 12 TC 0 Z9 0 U1 1 U2 1 PU VDE VERLAG GMBH PI BERLIN PA BISMARCKSTRASSE 33, BERLIN, 10625, GERMANY SN 2197-4403 BN 978-3-8007-4228-8 J9 EUSAR PROC PY 2016 BP 255 EP 258 PG 4 WC Remote Sensing; Imaging Science & Photographic Technology SC Remote Sensing; Imaging Science & Photographic Technology GA BG3MH UT WOS:000388020600059 ER PT S AU Roche, DS Aviv, A Choi, SG AF Roche, Daniel S. Aviv, Adam Choi, Seung Geol GP IEEE TI A Practical Oblivious Map Data Structure with Secure Deletion and History Independence SO 2016 IEEE SYMPOSIUM ON SECURITY AND PRIVACY (SP) SE IEEE Symposium on Security and Privacy LA English DT Proceedings Paper CT IEEE Symposium on Security and Privacy (SP) CY MAY 23-25, 2016 CL San Jose, CA SP IEEE, IEEE Comp Soc AB We present a new oblivious RAM that supports variable-sized storage blocks (vORAM), which is the first ORAM to allow varying block sizes without trivial padding. We also present a new history-independent data structure (a HIRB tree) that can be stored within a vORAM. Together, this construction provides an efficient and practical oblivious data structure (ODS) for a key/value map, and goes further to provide an additional privacy guarantee as compared to prior ODS maps: even upon client compromise, deleted data and the history of old operations remain hidden to the attacker. We implement and measure the performance of our system using Amazon Web Services, and the single-operation time for a realistic database (up to 256K entries) is less than 1 second. This represents a 100x speed-up compared to the current best oblivious map data structure (which provides neither secure deletion nor history independence) by Wang et al. (CCS 14). C1 [Roche, Daniel S.; Aviv, Adam; Choi, Seung Geol] US Naval Acad, Dept Comp Sci, Annapolis, MD 21402 USA. RP Roche, DS (reprint author), US Naval Acad, Dept Comp Sci, Annapolis, MD 21402 USA. EM roche@usna.edu; aviv@usna.edu; choi@usna.edu NR 41 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1081-6011 BN 978-1-5090-0824-7 J9 P IEEE S SECUR PRIV PY 2016 BP 178 EP 197 DI 10.1109/SP.2016.19 PG 20 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG2EQ UT WOS:000387292800011 ER PT S AU Datte, P Ross, JS Froula, D Galbraith, J Glenzer, S Hatch, B Kilkenny, J Landen, O Manuel, AM Molander, W Montgomery, D Moody, J Swadling, G Weaver, J de Dios, GV Vitalich, M AF Datte, P. Ross, J. S. Froula, D. Galbraith, J. Glenzer, S. Hatch, B. Kilkenny, J. Landen, O. Manuel, A. M. Molander, W. Montgomery, D. Moody, J. Swadling, G. Weaver, J. de Dios, G. Vergel Vitalich, M. BE Storm, E TI The preliminary design of the optical Thomson scattering diagnostic for the National Ignition Facility SO 9TH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS (IFSA 2015) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 9th International Conference on Inertial Fusion Sciences and Applications (IFSA) CY SEP 20-25, 2015 CL Univ California, Seattle, WA SP Lawrence Livermore Natl Lab, Inst Lasers & Plasmas, Inst Laser Engn, Los Alamos Natl Lab, LCLS, NIF&PS, Phys & Life Sci, UR LLE, Sandia Natl Lab HO Univ California AB The National Ignition Facility (NIF) is a 192 laser beam facility designed to support the Stockpile Stewardship, High Energy Density and Inertial Confinement Fusion programs. We report on the preliminary design of an Optical Thomson Scattering (OTS) diagnostic that has the potential to transform the community's understanding of NIF hohlraum physics by providing first principle, local, time-resolved measurements of under-dense plasma conditions. The system design allows operation with different probe laser wavelengths by manual selection of the appropriate beamsplitter and gratings before the shot. A deep-UV probe beam (lambda(0) between 185-215 nm) will optimally collect Thomson scattered light from plasma densities of 5 x 10(20) electrons/cm(3) while a 3 omega probe will optimally collect Thomson scattered light from plasma densities of 1 x 10(19) electrons/cm(3). We report the phase I design of a two phase design strategy. Phase I includes the OTS recording system to measure background levels at NIF and phase II will include the integration of a probe laser. C1 [Datte, P.; Ross, J. S.; Galbraith, J.; Hatch, B.; Kilkenny, J.; Landen, O.; Manuel, A. M.; Molander, W.; Moody, J.; Swadling, G.; de Dios, G. Vergel; Vitalich, M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Froula, D.] Univ Rochester, Laser Energet Lab, Rochester, NY USA. [Montgomery, D.] Los Alamos Natl Lab, Los Alamos, NM USA. [Weaver, J.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Glenzer, S.] SLAC Natl Accelerator Lab, Menlo Pk, CA USA. RP Datte, P (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM datte1@llnl.gov OI Swadling, George/0000-0001-8370-8837 NR 5 TC 3 Z9 3 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2016 VL 717 AR UNSP 012089 DI 10.1088/1742-6596/717/1/012089 PG 4 WC Physics, Applied; Physics, Fluids & Plasmas; Physics, Nuclear SC Physics GA BG2ZB UT WOS:000387785300089 ER PT S AU Landen, OL Baker, KL Clark, DS Goncharov, VN Hammel, BA Ho, DD Hurricane, OA Lindl, JD Loomis, EN Masse, L Mauche, C Milovich, JL Peterson, L Smalyuk, VA Yi, SA Velikovich, AL Weber, C AF Landen, O. L. Baker, K. L. Clark, D. S. Goncharov, V. N. Hammel, B. A. Ho, D. D. Hurricane, O. A. Lindl, J. D. Loomis, E. N. Masse, L. Mauche, C. Milovich, J. L. Peterson, L. Smalyuk, V. A. Yi, S. A. Velikovich, A. L. Weber, C. BE Storm, E TI Indirect-drive ablative Richtmyer Meshkov node scaling SO 9TH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS (IFSA 2015) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 9th International Conference on Inertial Fusion Sciences and Applications (IFSA) CY SEP 20-25, 2015 CL Univ California, Seattle, WA SP Lawrence Livermore Natl Lab, Inst Lasers & Plasmas, Inst Laser Engn, Los Alamos Natl Lab, LCLS, NIF&PS, Phys & Life Sci, UR LLE, Sandia Natl Lab HO Univ California ID NATIONAL IGNITION FACILITY; TARGETS; INSTABILITY AB The ablation front Rayleigh Taylor hydroinstability growth dispersion curve for indirect-drive implosions has been shown to be dependent on the Richtmyer Meshkov growth during the first shock transit phase. In this paper, a simplified treatment of the first shock ablative Richtmyer-Meshkov (ARM) growth dispersion curve is used to extract differences in ablation front perturbation growth behavior as function of foot pulse shape and ablator material for comparing the merits of various ICF design option. C1 [Landen, O. L.; Baker, K. L.; Clark, D. S.; Hammel, B. A.; Ho, D. D.; Hurricane, O. A.; Lindl, J. D.; Masse, L.; Mauche, C.; Milovich, J. L.; Peterson, L.; Smalyuk, V. A.; Weber, C.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Goncharov, V. N.] Laser Energet Lab, Rochester, NY USA. [Yi, S. A.] Los Alamos Natl Lab, Los Alamos, NM USA. [Velikovich, A. L.] Naval Res Lab, Washington, DC USA. RP Landen, OL (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM landenl@llnl.gov NR 30 TC 0 Z9 0 U1 2 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2016 VL 717 AR UNSP 012034 DI 10.1088/1742-6596/717/1/012034 PG 4 WC Physics, Applied; Physics, Fluids & Plasmas; Physics, Nuclear SC Physics GA BG2ZB UT WOS:000387785300034 ER PT S AU Radha, PB Hohenberger, M Marshall, FJ Michel, DT Bates, J Boehly, TR Collins, TJB Craxton, RS Delettrez, JA Dixit, SN Edgell, DH Frenje, JA Froula, DH Goncharov, VN Hu, SX Karasik, M Knauer, JP LePape, S Marozas, JA McCrory, RL McKenty, PW Meyerhofer, DD Myatt, JF Obenschein, S Petrasso, RD Regan, SP Rosenberg, MJ Sangster, TC Seka, W Shvydky, A Sio, H Skupsky, S Zylstra, A AF Radha, P. B. Hohenberger, M. Marshall, F. J. Michel, D. T. Bates, J. Boehly, T. R. Collins, T. J. B. Craxton, R. S. Delettrez, J. A. Dixit, S. N. Edgell, D. H. Frenje, J. A. Froula, D. H. Goncharov, V. N. Hu, S. X. Karasik, M. Knauer, J. P. LePape, S. Marozas, J. A. McCrory, R. L. McKenty, P. W. Meyerhofer, D. D. Myatt, J. F. Obenschein, S. Petrasso, R. D. Regan, S. P. Rosenberg, M. J. Sangster, T. C. Seka, W. Shvydky, A. Sio, H. Skupsky, S. Zylstra, A. BE Storm, E TI Polar-direct-drive experiments at the National Ignition Facility SO 9TH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS (IFSA 2015) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 9th International Conference on Inertial Fusion Sciences and Applications (IFSA) CY SEP 20-25, 2015 CL Univ California, Seattle, WA SP Lawrence Livermore Natl Lab, Inst Lasers & Plasmas, Inst Laser Engn, Los Alamos Natl Lab, LCLS, NIF&PS, Phys & Life Sci, UR LLE, Sandia Natl Lab HO Univ California ID SIMULATION; OMEGA AB Polar-direct-drive experiments at the National Ignition Facility (NIF) are being used to validate direct-drive-implosion models. Energy coupling and fast-electron preheat are the primary issues being studied in planar and imploding geometries on the NIF. Results from backlit images from implosions indicate that the overall drive is well modeled although some differences remain in the thickness of the imploding shell. Implosion experiments to mitigate cross-beam energy transfer and preheat from two-plasmon decay are planned for the next year. C1 [Radha, P. B.; Hohenberger, M.; Marshall, F. J.; Michel, D. T.; Boehly, T. R.; Collins, T. J. B.; Craxton, R. S.; Delettrez, J. A.; Edgell, D. H.; Froula, D. H.; Goncharov, V. N.; Hu, S. X.; Knauer, J. P.; Marozas, J. A.; McCrory, R. L.; McKenty, P. W.; Myatt, J. F.; Regan, S. P.; Rosenberg, M. J.; Sangster, T. C.; Seka, W.; Shvydky, A.; Skupsky, S.] Univ Rochester, Laser Energet Lab, 250 East River Rd, Rochester, NY 14623 USA. [Bates, J.; Karasik, M.; Obenschein, S.] Naval Res Lab, Washington, DC 20375 USA. [Dixit, S. N.; LePape, S.] Lawrence Livermore Lab, Livermore, CA 94550 USA. [Frenje, J. A.; Petrasso, R. D.; Sio, H.; Zylstra, A.] MIT, Plasma Fus Sci Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA. [Meyerhofer, D. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Radha, PB (reprint author), Univ Rochester, Laser Energet Lab, 250 East River Rd, Rochester, NY 14623 USA. EM rbah@lle.rochester.edu NR 19 TC 0 Z9 0 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2016 VL 717 AR UNSP 012009 DI 10.1088/1742-6596/717/1/012009 PG 4 WC Physics, Applied; Physics, Fluids & Plasmas; Physics, Nuclear SC Physics GA BG2ZB UT WOS:000387785300009 ER PT S AU Schmitt, AJ Obenschain, SP AF Schmitt, Andrew J. Obenschain, Stephen P. BE Storm, E TI Hot spot formation and stagnation properties in simulations of direct-drive NIF implosions SO 9TH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS (IFSA 2015) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 9th International Conference on Inertial Fusion Sciences and Applications (IFSA) CY SEP 20-25, 2015 CL Univ California, Seattle, WA SP Lawrence Livermore Natl Lab, Inst Lasers & Plasmas, Inst Laser Engn, Los Alamos Natl Lab, LCLS, NIF&PS, Phys & Life Sci, UR LLE, Sandia Natl Lab HO Univ California AB We investigate different proposed methods of increasing the hot spot energy and radius in inertial confinement fusion implosions. In particular, shock mistiming (preferentially heating the inner edge of the target's fuel) and increasing the initial vapor gas density are investigated as possible control mechanisms. We find that only the latter is effective in substantially increasing the hot spot energy and dimensions while achieving ignition. In all cases an increase in the hot spot energy is accompanied by a decrease in the hot spot energy density (pressure) and both the yield and the gain of the target drop substantially. 2D simulations of increased vapor density targets predict an increase in the robustness of the target with respect to surface perturbations but are accompanied by significant yield degradation. C1 [Schmitt, Andrew J.; Obenschain, Stephen P.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. RP Schmitt, AJ (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. EM andrew.schmitt@nrl.navy.mil NR 9 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2016 VL 717 AR UNSP 012047 DI 10.1088/1742-6596/717/1/012047 PG 4 WC Physics, Applied; Physics, Fluids & Plasmas; Physics, Nuclear SC Physics GA BG2ZB UT WOS:000387785300047 ER PT S AU Solodov, AA Rosenberg, MJ Myatt, JF Epstein, R Regan, SP Seka, W Shaw, J Hohenberger, M Bates, JW Moody, JD Ralph, JE Turnbull, DP Barrios, MA AF Solodov, A. A. Rosenberg, M. J. Myatt, J. F. Epstein, R. Regan, S. P. Seka, W. Shaw, J. Hohenberger, M. Bates, J. W. Moody, J. D. Ralph, J. E. Turnbull, D. P. Barrios, M. A. BE Storm, E TI Hydrodynamic simulations of long-scale-length plasmas for two-plasmon-decay planar-target experiments on the NIF SO 9TH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS (IFSA 2015) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 9th International Conference on Inertial Fusion Sciences and Applications (IFSA) CY SEP 20-25, 2015 CL Univ California, Seattle, WA SP Lawrence Livermore Natl Lab, Inst Lasers & Plasmas, Inst Laser Engn, Los Alamos Natl Lab, LCLS, NIF&PS, Phys & Life Sci, UR LLE, Sandia Natl Lab HO Univ California AB The two-plasmon-decay (TPD) instability can be detrimental for direct-drive inertial confinement fusion because it generates high-energy electrons that can preheat the target, thereby reducing target performance. Hydrodynamic simulations to design a new experimental platform to investigate TPD and other laser-plasma instabilities relevant to direct-drive-ignition implosions at the National Ignition Facility are presented. The proposed experiments utilize planar plastic targets with an embedded Mo layer to characterize generation of hot electrons through Mo K-alpha fluorescence and hard x-ray emission. Different laser-irradiation geometries approximate conditions near both the equator and the pole of a polar-direct-drive implosion. C1 [Solodov, A. A.; Rosenberg, M. J.; Myatt, J. F.; Epstein, R.; Regan, S. P.; Seka, W.; Shaw, J.; Hohenberger, M.] Univ Rochester, Laser Energet Lab, 250 East River Rd, Rochester, NY 14623 USA. [Bates, J. W.] Naval Res Lab, Washington, DC 20375 USA. [Moody, J. D.; Ralph, J. E.; Turnbull, D. P.; Barrios, M. A.] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Solodov, AA (reprint author), Univ Rochester, Laser Energet Lab, 250 East River Rd, Rochester, NY 14623 USA. EM asol@lle.rochester.edu NR 13 TC 1 Z9 1 U1 1 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2016 VL 717 AR UNSP 012053 DI 10.1088/1742-6596/717/1/012053 PG 4 WC Physics, Applied; Physics, Fluids & Plasmas; Physics, Nuclear SC Physics GA BG2ZB UT WOS:000387785300053 ER PT S AU Doctor, KZ Ackleson, SG Bachmann, CM Gray, DJ Montes, MJ Fusina, RA Houser, PR AF Doctor, Katarina Z. Ackleson, Steven G. Bachmann, Charles M. Gray, Deric J. Montes, Marcos J. Fusina, Robert A. Houser, Paul R. BE VelezReyes, M Messinger, DW TI How Many Spectral Bands are Necessary to Describe the Directional Reflectance of Beach Sands? SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XXII SE Proceedings of SPIE LA English DT Proceedings Paper CT 22nd SPIE Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXII CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE bidirectional reflectance distribution function (BRDF); wavelength dependence; spectral variability; hyperspectral; dominant directional reflective properties; goniometer; sheet flow; beach sand ID BIDIRECTIONAL REFLECTANCE AB Spectral variability in the visible, near-infrared and shortwave directional reflectance factor of beach sands and freshwater sheet flow is examined using principal component and correlation matrix analysis of in situ measurements. In previous work we concluded that the hyperspectral bidirectional reflectance distribution function (BRDF) of beach sands in the absence of sheet flow exhibit weak spectral variability, the majority of which can be described with three broad spectral bands with wavelength ranges of 350-450 nm, 700-1350 nm, and 1450-2400 nm.1 Observing sheet flow on sand we find that a thin layer of water enhances reflectance in the specular direction at all wavelengths and that spectral variability may be described using four spectral band regions of 350-450 nm, 500-950 nm, 950-1350 nm, and 1450-2400 nm. Spectral variations are more evident in sand surfaces of greater visual roughness than in smooth surfaces, regardless of sheet flow. C1 [Doctor, Katarina Z.; Ackleson, Steven G.; Gray, Deric J.; Montes, Marcos J.; Fusina, Robert A.] Naval Res Lab, Remote Sensing Div, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Bachmann, Charles M.] Rochester Inst Technol, Digital Imaging & Remote Sensing Lab, Rochester, NY 14623 USA. [Doctor, Katarina Z.; Houser, Paul R.] George Mason Univ, Dept Geog & Geoinformat Sci, Fairfax, VA 22030 USA. RP Doctor, KZ (reprint author), Naval Res Lab, Remote Sensing Div, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM katarina.doctor@nrl.navy.mil NR 14 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 978-1-5106-0081-2 J9 PROC SPIE PY 2016 VL 9840 AR 98401I DI 10.1117/12.2222221 PG 9 WC Engineering, Electrical & Electronic; Optics; Imaging Science & Photographic Technology SC Engineering; Optics; Imaging Science & Photographic Technology GA BF6RJ UT WOS:000383611600040 ER PT S AU Doster, T Olson, CC AF Doster, Timothy Olson, Colin C. BE VelezReyes, M Messinger, DW TI Building Robust Neighborhoods for Manifold Learning-Based Image Classification and Anomaly Detection SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XXII SE Proceedings of SPIE LA English DT Proceedings Paper CT 22nd SPIE Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXII CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE Anomaly Detection; Laplacian Eigenmaps; Manifold Learning; Image Classification; Neighborhood Construction ID MULTISPECTRAL DATA; EIGENMAPS; SPACE AB We exploit manifold learning algorithms to perform image classification and anomaly detection in complex scenes involving hyperspectral land cover and broadband IR maritime data. The results of standard manifold learning techniques are improved by including spatial information. This is accomplished by creating super-pixels which are robust to affine transformations inherent in natural scenes. We utilize techniques from harmonic analysis and image processing, namely, rotation, skew, flip, and shift operators to develop a more representational graph structure which defines the data-dependent manifold. C1 [Doster, Timothy; Olson, Colin C.] US Naval Res Lab, 4555 Overlook Ave SE, Washington, DC 20375 USA. RP Doster, T (reprint author), US Naval Res Lab, 4555 Overlook Ave SE, Washington, DC 20375 USA. EM timothy.doster@nrl.navy.mil NR 40 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 978-1-5106-0081-2 J9 PROC SPIE PY 2016 VL 9840 AR 984015 DI 10.1117/12.2227224 PG 13 WC Engineering, Electrical & Electronic; Optics; Imaging Science & Photographic Technology SC Engineering; Optics; Imaging Science & Photographic Technology GA BF6RJ UT WOS:000383611600030 ER PT S AU Gillis, DB AF Gillis, David B. BE VelezReyes, M Messinger, DW TI A nonlinear modeling framework for the detection of underwater objects in hyperspectral imagery SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XXII SE Proceedings of SPIE LA English DT Proceedings Paper CT 22nd SPIE Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXII CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE Hyperspectral; underwater; target detection; manifold learning AB The detection of underwater objects of interest (or targets) in hyperspectral imagery is a challenging problem, with a number of complications that are not present in land-based hyperspectral target detection. The main challenge in underwater detection is that, in contrast to land, where the observed spectrum of an associated target is largely independent of the surrounding background (e.g. the signature of a tank looks more or less the same whether it is on a road or in a field of grass), the observed spectrum of an underwater target is a highly nonlinear function of the background that is, the optical properties of the water body that the object is submerged in, as well as the depth of the target. As a result, the same object in different types of water and/or at different depths will in general have very different observed spectral signatures. In this work, we present a general overview of the various challenges involved in underwater detection, and present a novel approach that fuses forward radiative-transfer modeling, ocean color predictions, and nonlinear mathematical techniques (manifold learning) to model both the background and target signature(s) and perform detection over a wide range of environmental conditions and depths. C1 [Gillis, David B.] Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Gillis, DB (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM David.gillis@nrl.navy.mil NR 19 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0081-2 J9 PROC SPIE PY 2016 VL 9840 AR 98401B DI 10.1117/12.2228496 PG 14 WC Engineering, Electrical & Electronic; Optics; Imaging Science & Photographic Technology SC Engineering; Optics; Imaging Science & Photographic Technology GA BF6RJ UT WOS:000383611600034 ER PT S AU Huang, L Lambrakos, SG Shabaev, A Massa, L AF Huang, L. Lambrakos, S. G. Shabaev, A. Massa, L. BE VelezReyes, M Messinger, DW TI Calculation of Vibrational and Electronic Excited-State Absorption Spectra of Arsenic-Water Complexes Using Density Functional Theory SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XXII SE Proceedings of SPIE LA English DT Proceedings Paper CT 22nd SPIE Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXII CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE water monitoring; spectral analysis; contaminants ID SIMPLE POTENTIAL FUNCTIONS; GAUSSIAN-BASIS SETS; CLUSTERS (H2O)(N); LIQUID WATER; GLOBAL MINIMA; AB-INITIO; N-LESS-THAN-OR-EQUAL-TO-21; REPRODUCTION AB Calculations are presented of vibrational and electronic excited-state absorption spectra for As-H20 complexes using density function theory (DFT) and time-dependent density functional theory (TD-DFT). DFT and TDDFT can provide interpretation of absorption spectra with respect to molecular structure for excitation by electromagnetic waves at frequencies within the IR and UV-visible ranges. The absorption spectrum corresponding to excitation states of As-H20 complexes consisting of relatively small numbers of water molecules should be associated with response features that are intermediate between that of isolated molecules and that of a bulk system. DFT and TD-DFT calculated absorption spectra represent quantitative estimates that can be correlated with additional information obtained from laboratory measurements and other types of theory based calculations. The DFT software GAUSSIAN was used for the calculations of excitation states presented here. C1 [Huang, L.; Lambrakos, S. G.] Naval Res Lab, Ctr Computat Mat, Code 6390, Washington, DC 20375 USA. [Shabaev, A.] George Mason Univ, Fairfax, VA 22030 USA. [Massa, L.] CUNY Hunter Coll, New York, NY 10021 USA. RP Huang, L (reprint author), Naval Res Lab, Ctr Computat Mat, Code 6390, Washington, DC 20375 USA. NR 24 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0081-2 J9 PROC SPIE PY 2016 VL 9840 AR 98401E DI 10.1117/12.2222592 PG 9 WC Engineering, Electrical & Electronic; Optics; Imaging Science & Photographic Technology SC Engineering; Optics; Imaging Science & Photographic Technology GA BF6RJ UT WOS:000383611600036 ER PT S AU Olson, CC Doster, T AF Olson, C. C. Doster, T. BE VelezReyes, M Messinger, DW TI A Parametric Study of Unsupervised Anomaly Detection Performance in Maritime Imagery Using Manifold Learning Techniques SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND ULTRASPECTRAL IMAGERY XXII SE Proceedings of SPIE LA English DT Proceedings Paper CT 22nd SPIE Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXII CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE Hyperspectral Imaging; Nonlinear Dimensionality Reduction; Manifold Learning; Anomaly Detection; Unsupervised Learning; Target Detection ID HYPERSPECTRAL IMAGERY AB We investigate the parameters that govern an unsupervised anomaly detection framework that uses nonlinear techniques to learn a better model of the non-anomalous data. A manifold or kernel-based model is learned from a small, uniformly sampled subset in order to reduce computational burden and under the assumption that anomalous data will have little effect on the learned model because their rarity reduces the likelihood of their inclusion in the subset. The remaining data are then projected into the learned space and their projection errors used as detection statistics. Here, kernel principal component analysis is considered for learning the background model. We consider spectral data from an 8-band multispectral sensor as well as panchromatic infrared images treated by building a data set composed of overlapping image patches. We consider detection performance as a function of patch neighborhood size as well as embedding parameters such as kernel bandwidth and dimension. ROC curves are generated over a range of parameters and compared to RX performance. C1 [Olson, C. C.; Doster, T.] Naval Res Lab, Opt Sci Div, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Olson, CC (reprint author), Naval Res Lab, Opt Sci Div, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM colin.olson@nrl.navy.mil NR 20 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 978-1-5106-0081-2 J9 PROC SPIE PY 2016 VL 9840 AR 984016 DI 10.1117/12.2227226 PG 9 WC Engineering, Electrical & Electronic; Optics; Imaging Science & Photographic Technology SC Engineering; Optics; Imaging Science & Photographic Technology GA BF6RJ UT WOS:000383611600031 ER PT J AU Yates, MD Eddie, BJ Kotloski, NJ Lebedev, N Malanoski, AP Lin, BC Strycharz-Glaven, SM Tender, LM AF Yates, Matthew D. Eddie, Brian J. Kotloski, Nicholas J. Lebedev, Nikolai Malanoski, Anthony P. Lin, Baochuan Strycharz-Glaven, Sarah M. Tender, Leonard M. TI Toward understanding long-distance extracellular electron transport in an electroautotrophic microbial community SO ENERGY & ENVIRONMENTAL SCIENCE LA English DT Article ID GEOBACTER-SULFURREDUCENS BIOFILMS; RESONANCE RAMAN-SPECTRA; CYTOCHROME-C; COMMODITY CHEMICALS; REDOX CENTERS; IRON-SULFUR; RUBREDOXIN; SPECTROSCOPY; ELECTRICITY; FERREDOXIN AB Microbial electrosynthesis (ME) seeks to use electroautotrophy (the reduction of CO2 by microbial electrode catalysts) to generate useful multi-carbon compounds. It combines the utility of electrosynthesis with the durability of microorganisms and potential to engineer microbial metabolic processes. Central to achieving efficient ME is understanding the extracellular electron transport (EET) processes that enable certain microorganisms to utilize electrodes as metabolic electron donors. The Marinobacter-Chromatiaceae-Labrenzia (MCL) biocathode is an electroautotrophic biofilm-forming microbial community enriched from seawater that grows aerobically on gold or graphite cathodes, which we study to understand the mechanisms underpinning electroautotrophy. Evidence suggests that MCL reduces O-2 using the cathode as its sole electron donor, directing a portion of the acquired electrons and energy to fix CO2 for biomass. A key feature of MCL is that it grows at +310 mV vs. SHE. Here, we apply electrochemical gating measurements, originally developed to study electron transport through polymer films, to study EET through living MCL biofilms. The results indicate that MCL biofilms employ a redox conduction mechanism to transport electrons across the biofilm/electrode interface and into the biofilm over multiple cell lengths (at least 5 mm) away from the electrode surface. In addition to making living MCL biofilms electrically conductive (60 mu S cm(-1) at 30 degrees C - more than 10 times greater conductivity than any other living microbial biofilm for which reliable measurements have been made), it enables electron uptake by cells not in direct contact with the electrode surface, which has not been previously reported for any biocathode. Confocal resonance Raman microscopy confirms the presence of c-type cytochromes as the putative redox cofactors involved in LD-EET, consistent with the activation energy for LD-EET obtained from the temperature dependency of the electrochemical gating measurements. These results provide the first report and mechanistic characterization of long-distance EET occurring within a multi-cell thick electroautotrophic biofilm - key milestones toward rational design and optimization of viable ME systems. C1 [Yates, Matthew D.; Eddie, Brian J.; Kotloski, Nicholas J.; Lebedev, Nikolai; Malanoski, Anthony P.; Lin, Baochuan; Strycharz-Glaven, Sarah M.; Tender, Leonard M.] Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. [Yates, Matthew D.] CNR, Washington, DC 20418 USA. [Kotloski, Nicholas J.] George Mason Univ, Fairfax, VA 22030 USA. RP Tender, LM (reprint author), Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA. EM tender@nrl.navy.mil RI Malanoski, Anthony/C-7814-2011; OI Malanoski, Anthony/0000-0001-6192-888X; Yates, Matthew/0000-0003-4373-3864 FU Office of Naval Research [N0001415WX01038, N0001415WX00195]; Naval Research Laboratory base funds; Naval Research Laboratory Nanosciences Institute FX Funding provided by the Office of Naval Research (Award #N0001415WX01038 and N0001415WX00195), the Naval Research Laboratory base funds and the Naval Research Laboratory Nanosciences Institute. NR 86 TC 0 Z9 0 U1 35 U2 35 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1754-5692 EI 1754-5706 J9 ENERG ENVIRON SCI JI Energy Environ. Sci. PY 2016 VL 9 IS 11 BP 3544 EP 3558 DI 10.1039/c6ee02106a PG 15 WC Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical; Environmental Sciences SC Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology GA EC1JZ UT WOS:000387862100021 ER PT J AU Zhang, JH Dharavath, S Mitchell, LA Parrish, DA Shreeve, JM AF Zhang, Jiaheng Dharavath, Srinivas Mitchell, Lauren A. Parrish, Damon A. Shreeve, Jean'ne M. TI Bridged bisnitramide-substituted furazan-based energetic materials SO JOURNAL OF MATERIALS CHEMISTRY A LA English DT Article ID HIGH-PERFORMANCE; HIGH-DENSITY; DERIVATIVES; SALTS; COCRYSTALS; STABILITY; STRATEGY; ACID AB A series of bridged bisnitramide energetic compounds was designed and synthesized based on amino/nitro-functionalized furazans with methyl-NNO-azoxy, 1,2,4-oxadiazole and 3-hydrazino(imino)methyl side-chain groups. For comparison, 4-(methyl-azoxy)-3-nitraminofurazan as a direct nitration product and the corresponding ammonium salt were also prepared. All new compounds were thoroughly characterized by IR, NMR, elemental analyses, and differential scanning calorimetry (DSC). Two of them were further confirmed by single-crystal X-ray diffraction analysis. Heats of formation and detonation properties were calculated by using Gaussian 03 and EXPLO 5 programs, respectively. Energetic evaluation indicates that these compounds have potential to compete with the traditional explosive TNT and in some cases approach high explosive PETN. In addition, these results show that the combination of alkyl-bridging moiety and furazan ring expand the options for the design of new energetic materials with varying sensitivities. C1 [Zhang, Jiaheng] Harbin Inst Technol, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China. [Dharavath, Srinivas; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA. [Mitchell, Lauren A.] Univ Minnesota, Dept Chem, 207 Pleasant St SE, Minneapolis, MN 55455 USA. [Parrish, Damon A.] Naval Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA. RP Zhang, JH (reprint author), Harbin Inst Technol, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China.; Shreeve, JM (reprint author), Univ Idaho, Dept Chem, Moscow, ID 83844 USA. EM jzhang@uidaho.edu; jshreeve@uidaho.edu FU Office of Naval Research [N00014-16-1-2089]; Defense Threat Reduction Agency [HDTRA 1-15-1-0028]; M. J. Murdock Charitable Trust [2014120:MNL:11/20/2014] FX Financial support of the Office of Naval Research (N00014-16-1-2089), the Defense Threat Reduction Agency (HDTRA 1-15-1-0028), and the M. J. Murdock Charitable Trust (No. 2014120:MNL:11/20/2014) for funds supporting the purchase of a 500 MHz NMR spectrometer is greatly acknowledged. NR 50 TC 0 Z9 0 U1 1 U2 1 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 2016 VL 4 IS 43 BP 16961 EP 16967 DI 10.1039/c6ta08055c PG 7 WC Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Energy & Fuels; Materials Science GA EC1PL UT WOS:000387878700025 ER PT S AU Glassman, J AF Glassman, Jacob BE Suresh, R TI Open Architecture for Rapid Deployment of Capability SO OPEN ARCHITECTURE/OPEN BUSINESS MODEL NET-CENTRIC SYSTEMS AND DEFENSE TRANSFORMATION 2016 SE Proceedings of SPIE LA English DT Proceedings Paper CT 21st Conference on Open Architecture/Open Business Model Net-Centric Systems and Defense Transformation CY APR 19-20, 2016 CL Baltimore, MD SP SPIE AB Modern warfare has drastically changed from conventional to non-conventional and from fixed threats to dynamic ones over the past several decades. This unprecedented fundamental shift has now made our adversaries and their weapons more nebulous and ever changing. Our current acquisition system however is not suited to develop, test and deploy essential capability to counter these dynamic threats in time to combat them. This environment requires a new infrastructure in our system design to rapidly adopt capabilities that we do not currently plan for or even know about. The key to enabling this rapid implementation is Open Architecture in acquisition. The DoD has shown it can rapidly prototype capabilities such as unmanned vehicles but has severely struggled in moving from the prototyping to deployment. A major driver of this disconnect is the lack of established infrastructure to employ said capability such as launch and recovery systems and command and control. If we are to be successful in transitioning our rapid capability to the warfighter we must implement established well defined interfaces and enabling technologies to facilitate the rapid adoption of capability so the warfighter has the tools to effectively counter the threat. C1 [Glassman, Jacob] Naval Sea Syst Command, 1333 Isaac Hull Ave SE, Washington, DC 20376 USA. RP Glassman, J (reprint author), Naval Sea Syst Command, 1333 Isaac Hull Ave SE, Washington, DC 20376 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0090-4 J9 PROC SPIE PY 2016 VL 9849 AR 98490A DI 10.1117/12.2219907 PG 5 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Computer Science, Interdisciplinary Applications SC Computer Science GA BF6UN UT WOS:000383735100005 ER PT B AU Kappus, ME Ackleson, SG Bowles, JH Corson, MR Davis, CO Gao, BC Gould, RW Korwan, DR Lewis, MD Lucke, RL Montes, MJ Moses, WJ Nahorniak, JS Patterson, KW Wagner, EJ AF Kappus, Mary E. Ackleson, Steven G. Bowles, Jeffrey H. Corson, Michael R. Davis, Curtiss O. Gao, Bo-Cai Gould, Richard W., Jr. Korwan, Daniel R. Lewis, Mark David Lucke, Robert L. Montes, Marcos J. Moses, Wesley J. Nahorniak, Jasmine S. Patterson, Karen W. Wagner, Ellen J. BE Qian, SE TI Hyperspectral Imager for the Coastal Ocean on the International Space Station SO OPTICAL PAYLOADS FOR SPACE MISSIONS LA English DT Article; Book Chapter ID RADIATIVE-TRANSFER CODE; REMOTE-SENSING IMAGERY; CHLOROPHYLL CONCENTRATION; ATMOSPHERIC CORRECTION; VECTOR VERSION; SATELLITE DATA; WATER-QUALITY; VALIDATION; RADIANCE; SEAWIFS C1 [Kappus, Mary E.; Ackleson, Steven G.; Bowles, Jeffrey H.; Gao, Bo-Cai; Korwan, Daniel R.; Moses, Wesley J.; Patterson, Karen W.; Wagner, Ellen J.] Naval Res Lab, Washington, DC 20375 USA. [Corson, Michael R.; Lucke, Robert L.] US Naval Res Lab, Washington, DC USA. [Davis, Curtiss O.] Oregon State Univ, Corvallis, OR 97331 USA. [Gould, Richard W., Jr.; Lewis, Mark David] Naval Res Lab, Stennis Space Ctr, MS USA. [Nahorniak, Jasmine S.] Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA. RP Kappus, ME (reprint author), Naval Res Lab, Washington, DC 20375 USA. NR 29 TC 0 Z9 0 U1 2 U2 2 PU JOHN WILEY & SONS LTD PI CHICHESTER PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, WEST SUSSEX, ENGLAND BN 978-1-118-94526-1; 978-1-118-94514-8 PY 2016 BP 29 EP 51 PG 23 WC Engineering, Aerospace; Instruments & Instrumentation; Optics; Imaging Science & Photographic Technology SC Engineering; Instruments & Instrumentation; Optics; Imaging Science & Photographic Technology GA BF8XK UT WOS:000385248800003 ER PT J AU Pruessner, MW Park, D Kozak, DA Stievater, TH Rabinovich, WS AF Pruessner, Marcel W. Park, Doewon Kozak, Dmitry A. Stievater, Todd H. Rabinovich, William S. GP IEEE TI Effective Index Tuning In Micro-Opto-Mechanical Structures Using Gradient Electric Forces SO 2016 IEEE PHOTONICS SOCIETY SUMMER TOPICAL MEETING SERIES (SUM) LA English DT Proceedings Paper CT IEEE Photonics Society Summer Topical Meeting Series (SUM) CY JUL 11-13, 2016 CL Newport Beach, CA SP IEEE AB We demonstrate a new device architecture enabling large effective index tuning in a highly-evanescent waveguide interacting with a suspended microbridge. Using gradient electric forces, we actuate the microbridge to induce dynamic phase shifts Delta phi>pi at low electrical power. C1 [Pruessner, Marcel W.; Park, Doewon; Kozak, Dmitry A.; Stievater, Todd H.; Rabinovich, William S.] US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Pruessner, MW (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM marcel.pruessner@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 BN 978-1-5090-1900-7 PY 2016 BP 164 EP 165 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG1QC UT WOS:000386968000080 ER PT S AU Wolfe, KC Kutzer, MDM Tunstel, EW AF Wolfe, Kevin C. Kutzer, Michael D. M. Tunstel, Edward W. GP IEEE TI Exploiting Redundancy to Improve Bimanual Telepresent Manipulation SO 2016 WORLD AUTOMATION CONGRESS (WAC) SE World Automation Congress LA English DT Proceedings Paper CT World Automation Congress (WAC) CY JUL 31-AUG 04, 2016 CL PR DE Bimanual dexterous robotics; reduced-order control; telepresent manipulation; explosive ordnance disposal AB Teleoperated robots are used in scenarios that require a human operator due to complex unstructured environments and risks associated with mistakes. This work focuses on telepresent manipulation where the human operator is immersed in the environment of an explosive ordnance disposal robot equipped with an anthropomorphic bimanual manipulator of many degrees of freedom. Using an approach that extends the application of null space optimization to a manipulator with bifurcating kinematic structure, redundancy is exploited to allow the user easier, more natural control while the system improves robot pose with respect to task-centric cost functions. Early results reveal that actively optimizing a cost function for managing joint ranges of motion effectively permits exploitation of redundancy without requiring additional user input during teleoperation. Additional cost functions motivated by this result are presented to further improve bimanual telepresent manipulation. C1 [Wolfe, Kevin C.; Tunstel, Edward W.] Johns Hopkins Appl Phys Lab, Laurel, MD 20723 USA. [Kutzer, Michael D. M.] US Naval Acad, Annapolis, MD 21402 USA. RP Wolfe, KC (reprint author), Johns Hopkins Appl Phys Lab, Laurel, MD 20723 USA. EM Kevin.Wolfe@jhuapl.edu; kutzer@usna.edu; Edward.Tunstel@jhuapl.edu NR 18 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2154-4824 J9 WORLD AUTOMAT CONG PY 2016 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BG1AJ UT WOS:000386618400076 ER PT S AU Cordoba-Jabonero, C Adame, JA Campbell, JR Cuevas, E Diaz, JP Exposito, F Gil-Ojeda, M AF Cordoba-Jabonero, Carmen Antonio Adame, Jose Campbell, James R. Cuevas, Emilio Pedro Diaz, Juan Exposito, Francisco Gil-Ojeda, Manuel BE Gross, B Moshary, F Arend, M TI LIDAR RATIO DERIVED FOR PURE DUST AEROSOLS: MULTI-YEAR MICRO PULSE LIDAR OBSERVATIONS IN A SAHARAN DUST-INFLUENCED REGION SO 27TH INTERNATIONAL LASER RADAR CONFERENCE (ILRC 27) SE EPJ Web of Conferences LA English DT Proceedings Paper CT 27th International Laser Radar Conference (ILRC) CY JUL 05-10, 2015 CL Natl Ocean & Atmospher Adm, Cooperat Remote Sensing Sci & Technol Ctr, New York City, NY SP City Univ New York, City Coll HO Natl Ocean & Atmospher Adm, Cooperat Remote Sensing Sci & Technol Ctr AB A seasonal distribution of the Lidar Ratio (LR, extinction-to-backscattering coefficient ratio) for pure Saharan dust particles has been achieved. Simultaneous MPLNET/Micro Pulse lidar measurements in synergy with AERONET sun photometer data were collected in the Tenerife area, a Saharan dust-influenced region, from June 2007 to November 2009. Dusty cases were mostly observed in summertime (71.4 % of total dusty cases). No differences were found among the LR values derived for spring, summertime and autumn times (a rather consistent seasonally averaged LR value of 57 sr is found). In wintertime, however, a higher mean LR is derived (65 sr), associated likely with a potential contamination from fine biomass burning particles coming from Sahel area during wintertime deforestation fires period. Results, obtained from a free-tropospheric pristine station (AEMET/Izatia Observatory) under Saharan dust intrusion occurrence, provide a more realistic perspective about LR values to be used in elastic lidar-derived AOD inversion for Saharan pure dust particles, and hence in improving CALIPSO AOD retrievals. C1 [Cordoba-Jabonero, Carmen; Antonio Adame, Jose; Gil-Ojeda, Manuel] Inst Nacl Tecn Aeroesp, Atmospher Res & Instrumentat Branch, Madrid 28850, Spain. [Campbell, James R.] Naval Res Lab, Marine Meteorol Div, Aerosol & Radiat Sci Sect, Monterey, CA USA. [Cuevas, Emilio] Agencia Estatal Meteorol AEMET, Izana Atmospher Res Ctr, Santa Cruz De Tenerife, Spain. [Pedro Diaz, Juan; Exposito, Francisco] Univ La Laguna, Dept Fundamental Phys, San Cristobal la Laguna, Spain. RP Cordoba-Jabonero, C (reprint author), Inst Nacl Tecn Aeroesp, Atmospher Res & Instrumentat Branch, Madrid 28850, Spain. EM cordobajc@inta.es OI Exposito, Francisco Javier/0000-0002-6946-6090 NR 15 TC 1 Z9 1 U1 2 U2 2 PU E D P SCIENCES PI CEDEX A PA 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE SN 2100-014X J9 EPJ WEB CONF PY 2016 VL 119 AR UNSP 23017 DI 10.1051/epjconf/201611923017 PG 4 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG1GC UT WOS:000386726600211 ER PT S AU Lewis, JR Welton, EJ Campbell, JR Haftings, PC AF Lewis, Jasper R. Welton, Ellsworth J. Campbell, James R. Haftings, Phillip C. BE Gross, B Moshary, F Arend, M TI MPLNET V3 CLOUD AND PLANETARY BOUNDARY LAYER DETECTION SO 27TH INTERNATIONAL LASER RADAR CONFERENCE (ILRC 27) SE EPJ Web of Conferences LA English DT Proceedings Paper CT 27th International Laser Radar Conference (ILRC) CY JUL 05-10, 2015 CL Natl Ocean & Atmospher Adm, Cooperat Remote Sensing Sci & Technol Ctr, New York City, NY SP City Univ New York, City Coll HO Natl Ocean & Atmospher Adm, Cooperat Remote Sensing Sci & Technol Ctr ID LIDAR; RETRIEVALS AB The NASA Micropulse Lidar Network Version 3 algorithms for planetary boundary layer and cloud detection are described and differences relative to the previous Version 2 algorithms are highlighted. A year of data from the Goddard Space Flight Center site in Greenbelt, MD consisting of diurnal and seasonal trends is used to demonstrate the results. Both the planetary boundary layer and cloud algorithms show significant improvement of the previous version. C1 [Lewis, Jasper R.] Univ Maryland Baltimore Cty, Joint Ctr Earth Syst Technol, Baltimore, MD 21250 USA. [Lewis, Jasper R.; Welton, Ellsworth J.; Haftings, Phillip C.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Campbell, James R.] Naval Res Lab, Monterey, CA 93943 USA. [Haftings, Phillip C.] Sci Syst & Applicat Inc, Lanham, MD 20706 USA. RP Lewis, JR (reprint author), Univ Maryland Baltimore Cty, Joint Ctr Earth Syst Technol, Baltimore, MD 21250 USA.; Lewis, JR (reprint author), NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. EM jasper.r.lewis@nasa.gov NR 7 TC 0 Z9 0 U1 0 U2 0 PU E D P SCIENCES PI CEDEX A PA 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE SN 2100-014X J9 EPJ WEB CONF PY 2016 VL 119 AR UNSP 16011 DI 10.1051/epjconf/201611916011 PG 4 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG1GC UT WOS:000386726600142 ER PT S AU Lolli, S Lewis, JR Welton, EJ Campbell, JR Gu, Y AF Lolli, Simone Lewis, Jasper R. Welton, Ellsworth J. Campbell, James R. Gu, Y. BE Gross, B Moshary, F Arend, M TI UNDERSTANDING SEASONAL VARIABILITY IN THIN CIRRUS CLOUDS FROM CONTINUOUS MPLNET OBSERVATIONS AT GSFC IN 2012 SO 27TH INTERNATIONAL LASER RADAR CONFERENCE (ILRC 27) SE EPJ Web of Conferences LA English DT Proceedings Paper CT 27th International Laser Radar Conference (ILRC) CY JUL 05-10, 2015 CL Natl Ocean & Atmospher Adm, Cooperat Remote Sensing Sci & Technol Ctr, New York City, NY SP City Univ New York, City Coll HO Natl Ocean & Atmospher Adm, Cooperat Remote Sensing Sci & Technol Ctr ID RADIATION AB Optically thin cirrus cloud (optical depth < 0.3) net radiative forcing represents one of the primary uncertainties in climate feedback, as sub-visible clouds play a fundamental role in atmospheric radiation balance and climate change. A lidar is a very sensitive optical device to detect clouds with an optical depth as low as 10(-4). In this paper we assess the daytime net radiative forcing of sub visible cirrus clouds detected at Goddard Space Flight Center, a permanent observational site of the NASA Micro Pulse Lidar Network in 2012. Depending on their height, season and hour of the day, the solar albedo effect can outweigh the infrared greenhouse effect, cooling the earth-atmosphere system rather than warming it exclusively. As result, based on latitude, the net forcing of sub-visible cirrus clouds can be more accurately parameterized in climate models. C1 [Lolli, Simone; Lewis, Jasper R.] NASA JCET, Code 612, Greenbelt, MD 20771 USA. [Welton, Ellsworth J.] NASA, Code 612, Greenbelt, MD 20771 USA. [Campbell, James R.] Naval Res Lab, Monterey, CA 93940 USA. [Gu, Y.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA. RP Lolli, S (reprint author), NASA JCET, Code 612, Greenbelt, MD 20771 USA. EM simone.lolli@nasa.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU E D P SCIENCES PI CEDEX A PA 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE SN 2100-014X J9 EPJ WEB CONF PY 2016 VL 119 AR UNSP 11004 DI 10.1051/epjconf/201611911004 PG 4 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG1GC UT WOS:000386726600097 ER PT S AU St Pe, A Wesloh, D Antoszewski, G Daham, F Goudarzi, N Rabenhorst, S Delgado, R AF St Pe, Alexandra Wesloh, Daniel Antoszewski, Graham Daham, Farrah Goudarzi, Navid Rabenhorst, Scott Delgado, Ruben BE Gross, B Moshary, F Arend, M TI IMPROVING MARYLAND'S OFFSHORE WIND ENERGY RESOURCE ESTIMATE USING DOPPLER WIND LIDAR TECHNOLOGY TO ASSESS MICROTMETEOROLOGY CONTROLS SO 27TH INTERNATIONAL LASER RADAR CONFERENCE (ILRC 27) SE EPJ Web of Conferences LA English DT Proceedings Paper CT 27th International Laser Radar Conference (ILRC) CY JUL 05-10, 2015 CL Natl Ocean & Atmospher Adm, Cooperat Remote Sensing Sci & Technol Ctr, New York City, NY SP City Univ New York, City Coll HO Natl Ocean & Atmospher Adm, Cooperat Remote Sensing Sci & Technol Ctr AB There is enormous potential to harness the kinetic energy of offshore wind and produce power. However significant uncertainties are introduced in the offshore wind resource assessment process, due in part to limited observational networks and a poor understanding of the marine atmosphere's complexity. Given the cubic relationship between a turbine's power output and wind speed, a relatively small error in the wind speed estimate translates to a significant error in expected power production. The University of Maryland Baltimore County (UMBC) collected in-situ measurements offshore, within Maryland's Wind Energy Area (WEA) from July-August 2013. This research demonstrates the ability of Doppler wind lidar technology to reduce uncertainty in estimating an offshore wind resource, compared to traditional resource assessment techniques, by providing a more accurate representation of the wind profile and associated hub-height wind speed variability. The second objective of this research is to elucidate the impact of offshore micrometeorology controls (stability, wind shear, turbulence) on a turbine's ability to produce power. Compared to lidar measurements, power law extrapolation estimates and operational National Weather Service models underestimated hub-height wind speeds in the WEA. In addition, lidar observations suggest the frequent development of a low-level wind maximum (LLWM), with high turbine layer wind shear and low turbulence intensity within a turbine's rotor layer (40m-160m). Results elucidate the advantages of using Doppler wind lidar technology to improve offshore wind resource estimates and its ability to monitor under-sampled offshore meteorological controls impact on a potential turbine's ability to produce power. C1 [St Pe, Alexandra; Wesloh, Daniel; Antoszewski, Graham; Daham, Farrah] Univ Maryland, Baltimore, MD 21250 USA. [Goudarzi, Navid] Univ Maryland, College Pk, MD 20742 USA. [Rabenhorst, Scott] Naval Res Lab, Washington, DC 20375 USA. [Delgado, Ruben] Joint Ctr Earth Syst Technol, Baltimore, MD 21250 USA. RP St Pe, A (reprint author), Univ Maryland, Baltimore, MD 21250 USA. EM astpe@umbc.edu NR 7 TC 0 Z9 0 U1 0 U2 0 PU E D P SCIENCES PI CEDEX A PA 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE SN 2100-014X J9 EPJ WEB CONF PY 2016 VL 119 AR UNSP 14004 DI 10.1051/epjconf/201611914004 PG 3 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BG1GC UT WOS:000386726600118 ER PT S AU Brown, BC AF Brown, Bryan C. BE Majji, M Turner, JD Wawrzyniak, GG Cerven, WT TI ORBIT DETERMINATION FOR GEOSYNCHRONOUS SPACECRAFT ACROSS UNOBSERVED STATION-KEEPING MANEUVERS SO ASTRODYNAMICS 2015 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT AAS/AIAA Astrodynamics Specialist Conference CY AUG 11-13, 2015 CL Vail, CO SP Amer Astronaut Soc, Space Flight Mech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm AB Accurately determining the orbits of geosynchronous spacecraft is challenging at best, and is even more difficult when such a spacecraft undergoes a station keeping maneuver during which no observations are taken. Often even the times and kind of maneuver are unknown (apse pair, node pair, hybrid, etc.), except in the spacecraft operations center. Even so, it is often desirable to be able to include both pre-maneuver and post-maneuver observations in the orbit determination process. We discuss one method for modeling and using such maneuver models in batch Weighted Least Squares orbit determination. C1 [Brown, Bryan C.] US Naval Res Lab, Space Syst Dev Dept, Code 8114, Washington, DC 20375 USA. RP Brown, BC (reprint author), US Naval Res Lab, Space Syst Dev Dept, Code 8114, Washington, DC 20375 USA. NR 3 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 978-0-87703-629-6 J9 ADV ASTRONAUT SCI PY 2016 VL 156 BP 419 EP 427 PN I-IV PG 9 WC Engineering, Aerospace SC Engineering GA BG2OP UT WOS:000387517700023 ER PT S AU Warner, JG Lemm, KM AF Warner, John G. Lemm, Krysta M. BE Majji, M Turner, JD Wawrzyniak, GG Cerven, WT TI ON COMPARING PRECISION ORBIT SOLUTIONS OF GEODETIC SATELLITES GIVEN SEVERAL ATMOSPHERIC DENSITY MODELS SO ASTRODYNAMICS 2015 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT AAS/AIAA Astrodynamics Specialist Conference CY AUG 11-13, 2015 CL Vail, CO SP Amer Astronaut Soc, Space Flight Mech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm ID INCOHERENT-SCATTER DATA; MASS-SPECTROMETER; ACCURACY; DRAG AB Many aspects of a satellite mission are directly impacted by the ability to precisely determine and accurately predict the satellite's orbit through high precision orbit determination. While gravity forces are typically well understood, the modeling of non-conservative forces to a high precision, which is critical to high precision orbit determination of satellites in low Earth orbit, is often more challenging. A number of current and historically recommended atmospheric density models are examined using the Naval Research Laboratory's Orbit Covariance Estimation and ANalysis (OCEAN) tool. High precision laser ranging data to geodetic satellites were used as test cases to evaluate the solution accuracy and predictive capabilities of the atmospheric density models. Orbit fit and prediction comparison metrics are generated for multiple atmospheric density models. Generally, the Jacchia-Bowman 2008 model results in predictive orbit solutions that more closely follow the definitive orbit solution over the entire 30 day prediction span. Surprisingly, the exponential atmospheric density model, while the simplest model, preforms almost as well over the first ten days of orbit prediction. C1 [Warner, John G.; Lemm, Krysta M.] US Naval Res Lab, Mission Dev Branch, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Warner, JG (reprint author), US Naval Res Lab, Mission Dev Branch, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 30 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 978-0-87703-629-6 J9 ADV ASTRONAUT SCI PY 2016 VL 156 BP 429 EP 440 PN I-IV PG 12 WC Engineering, Aerospace SC Engineering GA BG2OP UT WOS:000387517700024 ER PT S AU Eiler, E Warner, JG AF Eiler, Eric Warner, John G. BE Majji, M Turner, JD Wawrzyniak, GG Cerven, WT TI CHARACTERIZING THE EFFECTS OF LOW ORDER PERTURBATIONS ON GEODETIC SATELLITE PRECISION ORBIT DETERMINATION SO ASTRODYNAMICS 2015 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT AAS/AIAA Astrodynamics Specialist Conference CY AUG 11-13, 2015 CL Vail, CO SP Amer Astronaut Soc, Space Flight Mech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm ID REFERENCE SYSTEMS; EARTH AB Satellite operations often rely on the ability to precisely determine and accurately predict the satellite's orbit. Thus, there are numerous papers dedicated to developing methodologies for successful orbit determination. However, there are also lower order forces that act upon satellites that are not directly studied in detail. Two such phenomenon are studied here; perturbations due to the Lunar geopotential, and lower order relativistic corrections. The effects of both on orbit determination are studied with US Naval Research Laboratory's Orbit Covariance Estimation and ANalysis (OCEAN) tool. High precision laser ranging data of geodetic satellites are used as test cases to evaluate the solution accuracy and predictive capabilities. Orbit fit quality and prediction comparison metrics are generated for a number of lunar gravity field models, as well as including or excluding several lower order relativistic corrections. Recommendations are made based on the results. C1 [Eiler, Eric; Warner, John G.] US Naval Res Lab, Mission Dev Branch, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Eiler, E (reprint author), US Naval Res Lab, Mission Dev Branch, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 25 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 978-0-87703-629-6 J9 ADV ASTRONAUT SCI PY 2016 VL 156 BP 477 EP 488 PN I-IV PG 12 WC Engineering, Aerospace SC Engineering GA BG2OP UT WOS:000387517700027 ER PT S AU Karpenko, M Ross, IM Stoneking, ET Lebsock, KL Dennehy, N AF Karpenko, Mark Ross, I. Michael Stoneking, Eric T. Lebsock, Kenneth L. Dennehy, Neil BE Majji, M Turner, JD Wawrzyniak, GG Cerven, WT TI A MICRO-SLEW CONCEPT FOR PRECISION POINTING OF THE KEPLER SPACECRAFT SO ASTRODYNAMICS 2015 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT AAS/AIAA Astrodynamics Specialist Conference CY AUG 11-13, 2015 CL Vail, CO SP Amer Astronaut Soc, Space Flight Mech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm ID FLIGHT AB In light of the failure of two of four reaction wheels, the pointing precision of the Kepler spacecraft became so severely degraded that its original mission of hunting planets near the Cygnus constellation could not be continued. Since the scientific instrument remained fully functional, a new mission for Kepler called the K2 mission was proposed. In the K2 mission, Kepler uses a hybrid control architecture for pointing in the ecliptic plane. With the hybrid control architecture, the achievable pointing precision depends on the minimum impulse bit of the spacecraft reaction control system. This paper describes an alternative control strategy called the micro-slew which can be executed with reaction wheels only and used to reduce the control deadband associated with a hybrid control architecture. The new idea may therefore improve the pointing precision of the Kepler spacecraft beyond the K2 mission. The micro-slew concept is based on the observation that the solar radiation pressure acting on Kepler as a disturbance torque can be repurposed as a control torque in order to eliminate reliance on thrusters for three axis control. This is done by designing a three-axis attitude maneuver over small angles (less than 10(-4) rad) using concepts from optimal control. C1 [Karpenko, Mark; Ross, I. Michael] Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. [Stoneking, Eric T.] NASA, Goddard Spaceflight Ctr, Code 591, Greenbelt, MD 20771 USA. [Lebsock, Kenneth L.] Orbital Sci Corp, Tech Serv Div, 7500 Greenway Ctr Dr,Suite 1500, Greenbelt, MD 20770 USA. [Dennehy, Neil] NASA, Guidance Nav & Control, Engn Safety Ctr, Langley Res Ctr, Mail Stop 118, Hampton, VA 23681 USA. RP Karpenko, M (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. EM mkarpenk@nps.edu NR 13 TC 0 Z9 0 U1 1 U2 1 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 978-0-87703-629-6 J9 ADV ASTRONAUT SCI PY 2016 VL 156 BP 1463 EP 1478 PN I-IV PG 16 WC Engineering, Aerospace SC Engineering GA BG2OP UT WOS:000387517700085 ER PT S AU Karpenko, M King, JT AF Karpenko, Mark King, Jeffery T. BE Majji, M Turner, JD Wawrzyniak, GG Cerven, WT TI AGILITY ENVELOPES FOR REACTION WHEEL SPACECRAFT SO ASTRODYNAMICS 2015 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT AAS/AIAA Astrodynamics Specialist Conference CY AUG 11-13, 2015 CL Vail, CO SP Amer Astronaut Soc, Space Flight Mech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm AB Spacecraft agility is limited by the maximum torque that reaction wheels can provide. Therefore, a reaction wheel array is typically configured to maximize the inscribed sphere of the reaction wheel torque envelope. However, maximizing the inscribed torque sphere does not, in general, maximize agility. Thus, the industry standard approach can severely underestimate the true capability of an attitude control system. This paper presents the concept of the agility envelope for reaction wheel arrays as a means to identify "hidden agility" that can be exploited to maximize the slew performance of a conventional attitude control system. In a typical example, this hidden agility can be used to reduce slew times without the need for larger, more costly hardware or new control algorithms. Since the agility envelope for a reaction wheel attitude control system is an n-dimensional hypercube projected into three-dimensional space, simple expressions exist for determining the maximal agility envelope. These expressions are developed and used to solve for the limits on angular acceleration and rate for maneuver design and implementation as well as for finding the reaction wheel skew angles that maximize agility for a given spacecraft configuration. C1 [Karpenko, Mark] Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. [King, Jeffery T.] US Naval Acad, Dept Aerosp Engn, 121 Blake Rd, Annapolis, MD 21402 USA. RP Karpenko, M (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. EM mkarpenk@nps.edu NR 15 TC 0 Z9 0 U1 1 U2 1 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 978-0-87703-629-6 J9 ADV ASTRONAUT SCI PY 2016 VL 156 BP 1889 EP 1908 PN I-IV PG 20 WC Engineering, Aerospace SC Engineering GA BG2OP UT WOS:000387517700110 ER PT S AU Ross, IM Proulx, RJ Karpenko, M AF Ross, I. Michael Proulx, Ronald J. Karpenko, Mark BE Majji, M Turner, JD Wawrzyniak, GG Cerven, WT TI UNSCENTED OPTIMIZATION SO ASTRODYNAMICS 2015 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT AAS/AIAA Astrodynamics Specialist Conference CY AUG 11-13, 2015 CL Vail, CO SP Amer Astronaut Soc, Space Flight Mech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm AB Unscented optimization combines the concept of the unscented transform with standard optimization to produce a simple technique for mitigating the effect of uncertainties. This new approach addresses some long-standing challenges in practical probabilistic programming by trading some well-known theoretical and computational difficulties to an a posteriori, estimation of risk and reliability. Every practical optimization problem can be unscented; hence, the concepts introduced in this paper can be applied to a wide range of problems in astrodynamics. If unscented optimization techniques are used during the early phases of a mission design, it holds the potential to provide program managers quick estimates on risk, reliability and associated costs so that "optimal missions" do not suffer from cost overruns due to requirements creep. Using numerical examples, we demonstrate how it is possible to reduce risk from 50% all the way down to 1%. C1 [Ross, I. Michael; Proulx, Ronald J.; Karpenko, Mark] Naval Postgrad Sch, Control & Optimizat Labs, 700 Dyer Rd, Monterey, CA 93943 USA. RP Karpenko, M (reprint author), Naval Postgrad Sch, Control & Optimizat Labs, 700 Dyer Rd, Monterey, CA 93943 USA. EM mkarpenk@nps.edu NR 29 TC 0 Z9 0 U1 1 U2 1 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 978-0-87703-629-6 J9 ADV ASTRONAUT SCI PY 2016 VL 156 BP 2583 EP 2602 PN I-IV PG 20 WC Engineering, Aerospace SC Engineering GA BG2OP UT WOS:000387517700149 ER PT S AU Healy, L Binz, C AF Healy, Liam Binz, Christopher BE Majji, M Turner, JD Wawrzyniak, GG Cerven, WT TI POSTERIOR DISTRIBUTION OF AN ORBITAL ENSEMBLE FROM POSITION-ONLY OBSERVATIONS SO ASTRODYNAMICS 2015 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT AAS/AIAA Astrodynamics Specialist Conference CY AUG 11-13, 2015 CL Vail, CO SP Amer Astronaut Soc, Space Flight Mech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm AB Unassociated partial-state observations of orbits can provide probabilistic information on the earth orbital environment. A probability density function (pdf) of orbits may be constructed from position-only observations by assuming that velocities are all equally possible subject only to physical constraints. The eccentricity vector can be computed; combined with previously-presented results for other elements, this can be used to derive the pdf over a complete set of state variables. Unassociated position observations from an ensemble of orbits provide a joint pdf by orbital element. The location of sensors and the distribution of orbits affect the quality and utility of the results. C1 [Healy, Liam; Binz, Christopher] Naval Res Lab, Code 8233,4555 Overlook Ave, Washington, DC 20375 USA. RP Healy, L (reprint author), Naval Res Lab, Code 8233,4555 Overlook Ave, Washington, DC 20375 USA. NR 7 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 978-0-87703-629-6 J9 ADV ASTRONAUT SCI PY 2016 VL 156 BP 4043 EP 4054 PN I-IV PG 12 WC Engineering, Aerospace SC Engineering GA BG2OP UT WOS:000387517700235 ER PT S AU McGrath, CB Karpenko, M Proulx, RJ AF McGrath, Christopher B. Karpenko, Mark Proulx, Ronald J. BE Majji, M Turner, JD Wawrzyniak, GG Cerven, WT TI DISTRIBUTED COMPUTATION FOR NEAR REAL-TIME FOOTPRINT GENERATION SO ASTRODYNAMICS 2015 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT AAS/AIAA Astrodynamics Specialist Conference CY AUG 11-13, 2015 CL Vail, CO SP Amer Astronaut Soc, Space Flight Mech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm ID ENTRY AB It is computationally expensive to generate landing footprints for reentry vehicles. Techniques that utilize parallel computation can therefore significantly decrease computation time. Distributed computing techniques can be used to calculate an entire footprint in almost the same time that it takes a serial method to generate a single footprint point. The resulting speedup is a significant step towards real-time footprint generation. This paper describes two different parallel implementations of a psuedospectral optimal control solver and analyzes the footprint generation speedup achieved by both program architectures. C1 [McGrath, Christopher B.; Karpenko, Mark] Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. [Proulx, Ronald J.] Naval Postgrad Sch, Space Syst Acad Grp, 700 Dyer Rd, Monterey, CA 93943 USA. [McGrath, Christopher B.; Karpenko, Mark; Proulx, Ronald J.] AIAA, Reston, VA 20191 USA. RP McGrath, CB (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA.; McGrath, CB (reprint author), AIAA, Reston, VA 20191 USA. NR 19 TC 0 Z9 0 U1 2 U2 2 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 978-0-87703-629-6 J9 ADV ASTRONAUT SCI PY 2016 VL 156 BP 4165 EP 4183 PN I-IV PG 19 WC Engineering, Aerospace SC Engineering GA BG2OP UT WOS:000387517700241 ER PT S AU Frontera, PJ Proulx, RJ Karpenko, M Ross, IM AF Frontera, Paul J. Proulx, Ronald J. Karpenko, Mark Ross, I. Michael BE Majji, M Turner, JD Wawrzyniak, GG Cerven, WT TI ANALYSIS OF HYPER-PSEUDOSPECTRAL TRANSFORMATION OF RANDOM VARIABLES SO ASTRODYNAMICS 2015 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT AAS/AIAA Astrodynamics Specialist Conference CY AUG 11-13, 2015 CL Vail, CO SP Amer Astronaut Soc, Space Flight Mech Comm, Amer Inst Aeronaut & Astronaut, Astrodynam Tech Comm AB Accurate transformation of random variables is required for many estimation algorithms with applications including guidance, navigation, and control (GNC). While the linear transformation of random variables is well understood, nonlinear transformations remain challenging as analytic solutions frequently do not exist and numerical techniques must be employed. Existing approximation methods for nonlinear transformations include linearization, Monte Carlo analysis using a sufficiently large number of samples, and numerical integration using the Unscented Transform. This paper analyzes performance of the Unscented Transform using hyper-pseudospectral points (HS points) compared to existing methods for the nonlinear transformation of random variables. C1 [Frontera, Paul J.; Karpenko, Mark; Ross, I. Michael] Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. [Proulx, Ronald J.] Naval Postgrad Sch, Space Syst Acad Grp, 700 Dyer Rd, Monterey, CA 93943 USA. RP Frontera, PJ (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. EM pjfronte@nps.edu NR 13 TC 0 Z9 0 U1 1 U2 1 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 978-0-87703-629-6 J9 ADV ASTRONAUT SCI PY 2016 VL 156 BP 4185 EP 4204 PN I-IV PG 20 WC Engineering, Aerospace SC Engineering GA BG2OP UT WOS:000387517700242 ER PT S AU Mitchell, AJ Copp, P Savard, G Lister, CJ Lane, GJ Carpenter, MP Clark, JA Zhu, S Ayangeakaa, AD Bottoni, S Brown, TB Chowdhury, P Chillery, TW David, HM Hartley, DJ Heckmaier, E Janssens, RVF Kolos, K Kondev, FG Lauritsen, T McCutchan, EA Norman, EB Padgett, S Scielzo, ND Seweryniak, D Smith, ML Wilson, GL AF Mitchell, A. J. Copp, P. Savard, G. Lister, C. J. Lane, G. J. Carpenter, M. P. Clark, J. A. Zhu, S. Ayangeakaa, A. D. Bottoni, S. Brown, T. B. Chowdhury, P. Chillery, T. W. David, H. M. Hartley, D. J. Heckmaier, E. Janssens, R. V. F. Kolos, K. Kondev, F. G. Lauritsen, T. McCutchan, E. A. Norman, E. B. Padgett, S. Scielzo, N. D. Seweryniak, D. Smith, M. L. Wilson, G. L. BE Reed, MW Simpson, EC Mitchell, AJ TI Recent advances in beta-decay spectroscopy at CARIBU SO HEAVY ION ACCELERATOR SYMPOSIUM 2015: INTERNATIONAL NUCLEAR STRUCTURE CONFERENCE IN REMEMBRANCE OF GEORGE DRACOULIS SE EPJ Web of Conferences LA English DT Proceedings Paper CT Heavy Ion Accelerator Symposium / International Nuclear Structure Conference in Remembrance of George Dracoulis CY SEP 14-18, 2015 CL Australian Natl Univ, Canberra, AUSTRALIA HO Australian Natl Univ AB beta-decay spectroscopy of nuclei far from stability can provide powerful insight into a broad variety of topics in nuclear science, ranging from exotic nuclear structure phenomena, stellar nucleosynthesis processes, and applied topics such as quantifying "decay heat" discrepancies for advanced nuclear fuel cycles. Neutronrich nuclei approaching the drip-line are difficult to access experimentally, leaving many key examples largely under studied. The CARIBU radioactive beam facility at Argonne National Laboratory exploits spontaneous fission of Cf-252 in production of such beams. The X-Array and SATURN decay station have been commissioned to perform detailed decay spectroscopy of low-energy CARIBU beams. An extended science campaign was started during 2015; with projects investigating nuclear shape changes, collective octupole vibrations, beta-delayed neutron emission, and decay-scheme properties which could explain the reactor antineutrino puzzle. In this article we review the current status of the setup, update on the first results and recent hardware upgrades, and look forward to future possibilities. C1 [Mitchell, A. J.; Lane, G. J.; Smith, M. L.] Australian Natl Univ, Dept Nucl Phys, Canberra, ACT 2601, Australia. [Copp, P.; Lister, C. J.; Brown, T. B.; Chowdhury, P.; Chillery, T. W.; Wilson, G. L.] Univ Massachusetts Lowell, Dept Phys & Appl Phys, Lowell, MA 01854 USA. [Savard, G.; Carpenter, M. P.; Clark, J. A.; Zhu, S.; Ayangeakaa, A. D.; Bottoni, S.; David, H. M.; Janssens, R. V. F.; Lauritsen, T.; Seweryniak, D.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. [Savard, G.] Univ Chicago, Dept Phys, Chicago, IL 60637 USA. [Chillery, T. W.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England. [Hartley, D. J.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA. [Heckmaier, E.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. [Kolos, K.; Norman, E. B.; Padgett, S.; Scielzo, N. D.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Kondev, F. G.] Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. [McCutchan, E. A.] Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA. [Norman, E. B.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. [David, H. M.] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany. RP Mitchell, AJ (reprint author), Australian Natl Univ, Dept Nucl Phys, Canberra, ACT 2601, Australia. EM aj.mitchell@anu.edu.au NR 13 TC 0 Z9 0 U1 1 U2 1 PU E D P SCIENCES PI CEDEX A PA 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE SN 2100-014X J9 EPJ WEB CONF PY 2016 VL 123 AR UNSP 04006 DI 10.1051/epjconf/201612304006 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BG2OU UT WOS:000387536400026 ER PT J AU Grujicic, M Ramaswami, S Snipes, J Yavari, R Dudt, P AF Grujicic, Mica Ramaswami, S. Snipes, Jennifer Yavari, Ramin Dudt, Philip TI Improvement in head blast-protection via the use of polyurea-augmented advanced combat helmet Experimental investigation and computational analysis SO INTERNATIONAL JOURNAL OF STRUCTURAL INTEGRITY LA English DT Article DE Polyurea; Traumatic brain injury; Advanced combat helmet; Helmet augmentation ID TRAUMATIC BRAIN-INJURY; MITIGATION; MODEL; CAPABILITY; WAVE AB Purpose - The purpose of this paper is to optimize the design of the advanced combat helmet (ACH) currently in use, by its designers in order to attain maximum protection against ballistic impacts (fragments, shrapnel, etc.) and hard-surface/head collisions. Since traumatic brain injury experienced by a significant fraction of the soldiers returning from the recent conflicts is associated with their exposure to blast, the ACH should be redesigned in order to provide the necessary level of protection against blast loads. In the present work, augmentations of the ACH for improved blast protections are considered. These augmentations include the use of a polyurea (a nano-segregated elastomeric copolymer)-based ACH external coating/internal lining. Design/methodology/approach - To demonstrate the efficacy of this approach, instrumented (unprotected, standard-ACH-protected, and augmented-ACH-protected) head-mannequin blast experiments are carried out. These experimental efforts are complemented with the appropriate combined Eulerian/Lagrangian transient non-linear dynamics computational fluid/solid interaction analysis. Findings - The results obtained indicated that: when the extent of peak over-pressure reduction is used as a measure of the blast-mitigation effectiveness, polyurea-based augmentations do not noticeably improve, and sometimes slightly worsen, the performance of the standard ACH; when the extent of specific impulse reduction is used as a measure of the blast-mitigation effectiveness, application of the polyurea external coating to the standard ACH improves the blast-mitigation effectiveness of the helmet, particularly at shorter values of the charge-detonation standoff distance (SOD). At longer SODs, the effects of the polyurea-based ACH augmentations on the blast-mitigation efficacy of the standard ACH are inconclusive; and the use of the standard ACH significantly lowers the accelerations experienced by the skull and the intracranial matter. As far as the polyurea-based augmentations are concerned, only the internal lining at shorter SODs appears to yield additional reductions in the head accelerations. Originality/value - To the authors' knowledge, the present work contains the first report of a combined experimental/computational study addressing the problem of blast-mitigation by polyurea-based augmentation of ACH. C1 [Grujicic, Mica; Ramaswami, S.; Snipes, Jennifer; Yavari, Ramin] Clemson Univ, Dept Mech Engn, Clemson, SC 29634 USA. [Dudt, Philip] Naval Surface Warfare Ctr, Carderock Div, Clemson, SC USA. RP Grujicic, M (reprint author), Clemson Univ, Dept Mech Engn, Clemson, SC 29634 USA. EM gmica@clemson.edu NR 49 TC 0 Z9 0 U1 0 U2 0 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY BD16 1WA, W YORKSHIRE, ENGLAND SN 1757-9864 EI 1757-9872 J9 INT J STRUCT INTEGR JI Int. J. Struct. Integr. PY 2016 VL 7 IS 4 BP 516 EP 552 DI 10.1108/IJSI-08-2015-0027 PG 37 WC Engineering, Multidisciplinary SC Engineering GA EB1XL UT WOS:000387149500003 ER PT J AU Whitener, KE Lee, WK Stine, R Tamanaha, CR Kidwell, DA Robinson, JT Sheehan, PE AF Whitener, Keith E., Jr. Lee, Woo-Kyung Stine, Rory Tamanaha, Cy R. Kidwell, David A. Robinson, Jeremy T. Sheehan, Paul E. TI Activation of radical addition to graphene by chemical hydrogenation SO RSC ADVANCES LA English DT Article ID HIGH THERMAL-CONDUCTIVITY; ELECTRICAL-CONDUCTIVITY; FUNCTIONALIZATION; NANOCOMPOSITES; FLUORIDE; SENSORS; REDUCTION; STABILITY AB We report several methods of chemical dehydrogenation of hydrogenated graphene (HG), characterizing the results using Raman, X-ray photoelectron spectroscopy, and electrical conductivity measurements. Notably, the hydrogen-graphene bonds appear to activate the graphene toward subsequent reaction such that, in several cases, the addition of the dehydrogenating agent to the graphene accompanies the removal of hydrogen. We compare the uptake of chemical groups on HG to those on pristine graphene and find that HG reacts more readily than pristine graphene with radical generators such as chlorine and AIBN. C1 [Whitener, Keith E., Jr.; Lee, Woo-Kyung; Tamanaha, Cy R.; Kidwell, David A.; Sheehan, Paul E.] US Naval Res Lab, Div Chem, Washington, DC 20375 USA. [Stine, Rory] Nova Res, 1900 Elkins St Suite 230, Alexandria, VA 22308 USA. [Robinson, Jeremy T.] US Naval Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA. RP Whitener, KE (reprint author), US Naval Res Lab, Div Chem, Washington, DC 20375 USA. EM keith.whitener@nrl.navy.mil FU Defense Advanced Research Projects Agency [MIPR HR0011512805]; Naval Research Laboratory Karle Fellowship; base programs FX This research was developed with funding from the Defense Advanced Research Projects Agency (MIPR HR0011512805). The views, opinions and/or findings expressed are those of the author and should not be interpreted as representing the official views or policies of the Department of Defense or the U. S. Government. This work was also supported by a Naval Research Laboratory Karle Fellowship and base programs. NR 40 TC 0 Z9 0 U1 9 U2 9 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2046-2069 J9 RSC ADV JI RSC Adv. PY 2016 VL 6 IS 96 BP 93356 EP 93362 DI 10.1039/c6ra21113e PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA DZ1WI UT WOS:000385631900018 ER PT S AU Nagayama, S Sasao, T Butler, JT AF Nagayama, Shinobu Sasao, Tsutomu Butler, Jon T. GP IEEE TI An Efficient Heuristic for Linear Decomposition of Index Generation Functions SO 2016 IEEE 46TH INTERNATIONAL SYMPOSIUM ON MULTIPLE-VALUED LOGIC (ISMVL 2016) SE International Symposium on Multiple-Valued Logic LA English DT Proceedings Paper CT 46th IEEE International Symposium on Multiple-Valued Logic (ISMVL) CY MAY 18-20, 2016 CL Sapporo, JAPAN SP IEEE, IEEE Comp Soc, Hokkaido Univ, IST, ML DE Heuristic; balanced decision tree; linear decomposition; index generation functions; logic design AB This paper proposes a heuristic for linear decomposition of index generation functions using a balanced decision tree. The proposed heuristic finds a good linear decomposition of an index generation function by recursively dividing a set of its function values into two balanced subsets. Since the proposed heuristic is fast and requires a small amount of memory, it is applicable even to large index generation functions that cannot be solved in a reasonable time by existing heuristics. This paper shows time and space complexities of the proposed heuristic, and experimental results using some large examples to show its efficiency. C1 [Nagayama, Shinobu] Hiroshima City Univ, Dept Comp & Network Engn, Hiroshima, Japan. [Sasao, Tsutomu] Meiji Univ, Dept Comp Sci, Kawasaki, Kanagawa, Japan. [Butler, Jon T.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA USA. RP Nagayama, S (reprint author), Hiroshima City Univ, Dept Comp & Network Engn, Hiroshima, Japan. NR 18 TC 0 Z9 0 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA SN 0195-623X BN 978-1-4673-9488-8 J9 INT SYM MVL PY 2016 BP 96 EP 101 DI 10.1109/ISMVL.2016.52 PG 6 WC Computer Science, Software Engineering; Engineering, Electrical & Electronic; Logic SC Computer Science; Engineering; Science & Technology - Other Topics GA BG0WO UT WOS:000386537300017 ER PT J AU Carey, D Shannon, R AF Carey, David Shannon, Russell GP IEEE TI Inhibiting Factors in Design for Testability Higher Education SO 2016 IEEE AUTOTESTCON PROCEEDINGS LA English DT Proceedings Paper CT IEEE AUTOTESTCON CY SEP 12-15, 2016 CL Anaheim, CA SP IEEE, IEEE Instrumentat & Measurement Soc, AESS, IEEE Aerosp & Elect Syst Soc DE DFT; diagnostics; education; built-in test; ATE; test; design for testability AB Many engineering students are not graduating with the necessary knowledge or experience in design for testability (DFT), automatic test equipment (ATE), or diagnostics in order to work in these fields. They typically do not demonstrate a consistent understanding of integrated diagnostics, or have an appreciation of the need. These same "fresh out" engineers will ultimately derive the low-level requirements for developing diagnostic systems, and this lack of knowledge of testing environments will have a significant impact. Failure to adequately address the integrated diagnostics and testing needs of a system greatly impacts its supportability and, consequently, the cost of that system throughout its life cycle. Integrated diagnostics is a career field for which there currently exists no standard set of basic qualifications, few educational opportunities to study at the university level, no clear processes within most organizations for practicing integrated diagnostics as a systems engineering activity, and no uniform method of sharing techniques and lessons learned with new employees. Studies have found that the majority of test engineer training is on-the-job, rather than knowledge acquired as part of a higher education degree program, or a formal training process [1]-[7]. As a result, it requires two to three years for any recent graduate to become competent in the field of test engineering. There are three main inhibiting factors to teaching design for testability as part of post-secondary education. The first factor is cost. The high cost, and quick obsolescence, of many ATE systems is a barrier to entry to any small-or medium-sized college's engineering department budget. Even accounting for corporate donations, there are hidden costs, such as facilities and equipment maintenance, which make ATE prohibitively expensive. Moreover, in the United States, all engineering curricula must be accredited by the Accreditation Board for Engineering and Technology (ABET). It is an arduous process, even for such well-worn topics as electrical engineering or mechanical engineering. A department chair is unlikely to risk the department's accreditation, or prolong the accreditation process, by including an exotic topic such as DFT or diagnostics. Finally, it is the goal of most institutions that their students will obtain employment upon graduation. To that end, curricula are often tailored to the demands of local employers. If surrounding industry is not asking for skilled diagnostic or DFT engineers, then there is no incentive for an engineering department to include it in a degree curriculum. This paper explores each of these factors in depth, and provides mitigations for overcoming the challenges that each presents. C1 [Carey, David] Wilkes Univ, Wilkes Barre, PA 18766 USA. [Shannon, Russell] Naval Air Syst Command, Lakehurst, NJ USA. RP Carey, D (reprint author), Wilkes Univ, Wilkes Barre, PA 18766 USA. EM david.carey@wilkes.edu; russell.shannon@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 BN 978-1-5090-0789-9 PY 2016 PG 5 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG1HF UT WOS:000386738000052 ER PT J AU Heagney, CP AF Heagney, Christopher P. GP IEEE TI Digital Radio Frequency Memory Synthetic Instrument Enhancing US Navy Automated Test Equipment Mission SO 2016 IEEE AUTOTESTCON PROCEEDINGS LA English DT Proceedings Paper CT IEEE AUTOTESTCON CY SEP 12-15, 2016 CL Anaheim, CA SP IEEE, IEEE Instrumentat & Measurement Soc, AESS, IEEE Aerosp & Elect Syst Soc DE Automated Test Equipment; Unit Under Test; Consolidated Automated Support System; Digital Radio Frequency Memory; Synthetic Instrument; Defensive Electronic Countermeasures AB This research project aims to expand the capability of current US Navy Automated Test Equipment (ATE) family of testers known as the Consolidated Automated Support System (CASS). Industry research is now focused on breaking the historical construct of test equipment. Advances in the field of Synthetic Instruments have opened the door to test avionics in new ways. Every year new capabilities are developed using core hardware and increasingly capable software modules to create complex waveforms. This research creates a Digital Radio Frequency Memory (DRFM) Synthetic Instrument that can be programmed to perform a wide array of low latency Radio Frequency (RF) tests. Synthetic Instruments are defined as a concatenation of hardware and software modules used in combination to emulate a traditional piece of electronic instrumentation. This Synthetic Instrument couples high speed Analog-to-Digital Converters (ADC) to high speed Digital-to-Analog Converters (DAC) with Field Programmable Gate Arrays (FPGA) in between for digital signal processing. An RF front end is used to down convert the RF to baseband where it is sampled, modified, and up converted back to RF. The FPGA performs Digital Signal Processing (DSP) on the signal to achieve the desired output. Application of this DRFM in automated testing is demonstrated using a Reconfigurable Transportable Consolidated Automated Support System (RTCASS) tester at Naval Air Systems Command (NAVAIR) Jacksonville, FL. The Unit Under Test (UUT) is an ALQ-162 Defensive Electronic Countermeasures (DECM) receiver-transmitter. Ultra-low latency signals are generated to simulate enemy jamming stimulus. As the ALQ-162 detects and responds to the input, the DRFM switches to a new frequency. The time taken by the ALQ-162 to acquire, respond, and re-acquire is measured. This test confirms the internal Yttrium Iron Garnet (YIG) oscillator meets slew specifications. Currently Navy ATE can only test RF units using high latency steady state tests. This research project developed a supplemental unit that can be added to the VXI chassis in the CASS family of testers and conduct ultra-low latency active tests. The instrument acts as hardware-in-the-loop to perform real-time tests including a new capability to measure jamming response time from DECM avionics. Demonstrated performance capabilities include: latency < 100 ns, output Spurious-Free Dynamic Range (SFDR) > 80 dBc, input SFDR > 60 dBc, frequency tuning resolution < 2 Hz, and frequency settling time < 0.5 ns. New RF capabilities developed by this effort parallel similar research ongoing for digital test instruments like the Teradyne High Speed Subsystem. Incorporating this Digital RF Memory synthetic instrument into current and future ATE will improve readiness and supportability of the fleet. Improvements demonstrated by this research project will expand the type and quantity of assets able to be tested by current and future ATE. C1 [Heagney, Christopher P.] Naval Air Syst Command, Fleet Readiness Ctr South East, Jacksonville, FL 32212 USA. RP Heagney, CP (reprint author), Naval Air Syst Command, Fleet Readiness Ctr South East, Jacksonville, FL 32212 USA. EM christopher.heagney@navy.mil 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 978-1-5090-0789-9 PY 2016 PG 8 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG1HF UT WOS:000386738000019 ER PT J AU Lindahl, P Leeb, S Donnal, J Bredariol, LG AF Lindahl, Peter Leeb, Steven Donnal, John Bredariol, Lt. Greg GP IEEE TI Noncontact Sensors and Nonintrusive Load Monitoring (NILM) Aboard the USCGC Spencer SO 2016 IEEE AUTOTESTCON PROCEEDINGS LA English DT Proceedings Paper CT IEEE AUTOTESTCON CY SEP 12-15, 2016 CL Anaheim, CA SP IEEE, IEEE Instrumentat & Measurement Soc, AESS, IEEE Aerosp & Elect Syst Soc AB Modernization in the U.S. Navy and U.S. Coast Guard includes an emphasis on automation systems to help replace manual tasks and reduce crew sizes. This places a high reliance on monitoring systems to ensure proper operation of equipment and maintain safety at sea. Nonintrusive Load Monitors (NILM) provide low-cost, rugged, and easily installed options for electrical system monitoring. This paper describes a real-world case study of newly developed noncontact NILM sensors installed aboard the USCGC SPENCER, a Famous class (270 ft) cutter. These sensors require no ohmic contacts for voltage measurements and can measure individual currents inside a multi-phase cable bundle. Aboard the SPENCER, these sensors were used to investigate automated testing applications including power system metric reporting, watchstander log generation, and machinery condition monitoring. C1 [Lindahl, Peter; Leeb, Steven; Bredariol, Lt. Greg] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA. [Donnal, John] US Naval Acad, Annapolis, MD 21402 USA. [Bredariol, Lt. Greg] US Coast Guard, Cambridge, MA 02139 USA. RP Lindahl, P (reprint author), MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA. EM lindahl@mit.edu NR 18 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-0789-9 PY 2016 PG 10 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG1HF UT WOS:000386738000066 ER PT J AU Kokalj-Filipovic, S Goodman, J Acosta, CB Stantchev, G AF Kokalj-Filipovic, Silvija Goodman, Joel Acosta, Crystal Bertoncini Stantchev, George GP IEEE TI I/O HSMM: Learning Behavioral Dynamics of a Cognitive Wireless Network Node From Spectrum Sensing SO 2016 ANNUAL CONFERENCE ON INFORMATION SCIENCE AND SYSTEMS (CISS) LA English DT Proceedings Paper CT 50th Annual Conference on Information Science and Systems (CISS) CY MAR 16-18, 2016 CL Princeton Univ, Dept Elect Engn, Princeton, NJ HO Princeton Univ, Dept Elect Engn AB learning the bi-modal behavioral dynamics of a network of cognitive radios (CRs). Each of the two modes of the CRs is represented as a Hidden Semi-Markov model (HSMM), where the states, state durations and emissions, transition probabilities between states, and transitions between modes are uncovered based solely on RF spectrum sensing. The learning of the CR dynamics is non-parametric and derived from the Hierarchical Dirichlet Process (HDP), with the switching between the two modes modeled as a latent variable that is estimated as a part of the learning process. The non-parametric model provides flexibility in handling unknown communication protocols. We evaluate the quality of learning against ground truth, and demonstrate that this approach is promising and merits extension to more complex models. C1 [Kokalj-Filipovic, Silvija; Goodman, Joel; Acosta, Crystal Bertoncini; Stantchev, George] Naval Res Lab, Washington, DC 20375 USA. RP Kokalj-Filipovic, S (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM silvija.kokalj-filipovic@nrl.navy.mil; joel.goodman@nrl.navy.mil; crystal.acosta@nrl.navy.mil; george.stantchev@nrl.navy.mil 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 978-1-4673-9457-4 PY 2016 PG 6 WC Computer Science, Information Systems; Information Science & Library Science SC Computer Science; Information Science & Library Science GA BG0JO UT WOS:000386277800083 ER PT J AU Kumblikar, R Sridharan, G Mandayam, NB Seskar, I Kompellat, S AF Kumblikar, Ratnesh Sridharan, Gokul Mandayam, Narayan B. Seskar, Ivan Kompellat, Sastry GP IEEE TI Design and Implementation of an Underlay Control Channel for NC-OFDM-Based Networks SO 2016 ANNUAL CONFERENCE ON INFORMATION SCIENCE AND SYSTEMS (CISS) LA English DT Proceedings Paper CT 50th Annual Conference on Information Science and Systems (CISS) CY MAR 16-18, 2016 CL Princeton Univ, Dept Elect Engn, Princeton, NJ HO Princeton Univ, Dept Elect Engn DE noncontiguous-OFDM; control channel design; frequency offset estimation; timing recovery; PN sequences ID SYNCHRONIZATION TECHNIQUES; FREQUENCY; SYSTEMS AB This paper designs an underlay control channel for noncontiguous-OFDM-based cognitive networks. Noncontiguous OFDM (NC-OFDM) provides a fast and flexible manner of accessing disjoint parts of the spectrum and is ideally suited for dynamic spectrum access. While similar to OFDM, NC-OFDM explicitly restricts transmission to only certain subcarriers that are free of incumbent transmissions. In particular, this paper considers designing a control channel for a cognitive network consisting of multiple point-to-point (p2p) links that operate over a wide bandwidth that might encompass some primary transmissions. In such a scenario, control channel becomes vital not only to share basic transmission parameters but also to aid timing and frequency recovery of NC-OFDM transmission; a nontrivial problem in itself. The proposed design is a low-power underlay transmission that spans the entire bandwidth regardless of any incumbent transmissions and uses direct sequence spread spectrum (DSSS). The control channel operates in one of two modes. The first mode aids timing and frequency recovery through a two-step process, while the second mode is used for control data transmission. To enable multiple access, the p2p links use orthogonal pseudo-noise (PN) sequences. The proposed control channel is implemented on USRPs in the ORBIT testbed using GNU Radio. Experimental results suggest robust timing and frequency offset recovery even in the presence of concurrent primary transmissions and support for about 10 to 20kbps over a 1 MHz bandwidth at an uncoded symbol-error-rate of about 10(-2) under typical operating conditions. C1 [Kumblikar, Ratnesh; Sridharan, Gokul; Mandayam, Narayan B.; Seskar, Ivan] Rutgers State Univ, WINLAB, North Brunswick, NJ 08901 USA. [Kompellat, Sastry] Naval Res Lab, Informat Technol Div, Washington, DC USA. RP Kumblikar, R (reprint author), Rutgers State Univ, WINLAB, North Brunswick, NJ 08901 USA. EM ratnesh@winlab.rutgers.edu; gokul@winlab.rutgers.edu; narayan@winlab.rutgers.edu; seskar@winlab.rutgers.edu; sk@ieee.org NR 24 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9457-4 PY 2016 PG 6 WC Computer Science, Information Systems; Information Science & Library Science SC Computer Science; Information Science & Library Science GA BG0JO UT WOS:000386277800041 ER PT J AU Park, D Han, DK Ko, H AF Park, Dubok Han, David K. Ko, Hanseok GP IEEE TI Enhancing Underwater Color Images of Diving Mask Mounted Digital Camera via Non-local Means Denoising SO 2016 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 07-11, 2016 CL Las Vegas, NV SP IEEE AB This paper proposes a novel framework for enhancing underwater images captured by digital camera embedded into underwater diving mask. Our approach adjusts the color balance using biasness and average of luminance. Then, scene visibility is enhanced based on underwater image model. Magnified noise in enhanced images is alleviated by Non-local means (NLM) denoising. The final enhanced images are characterized by improved visibility while retaining color fidelity and reduced noise. Our method does not require specialized hardware or prior knowledge about the underwater environment. C1 [Park, Dubok; Ko, Hanseok] Korea Univ, Dept Visual Informat Proc, Seoul, South Korea. [Han, David K.] Off Naval Res, Arlington, VA USA. RP Park, D (reprint author), Korea Univ, Dept Visual Informat Proc, Seoul, South Korea. 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 978-1-4673-8364-6 J9 IEEE ICCE PY 2016 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG0ME UT WOS:000386327000185 ER PT J AU Begum, R Eisen, E Legarra, J Chernyavskiy, IA Vlasov, AN Antonsen, TM AF Begum, Rasheda Eisen, Edward Legarra, Jim Chernyavskiy, Igor A. Vlasov, Alexander N. Antonsen, Thomas M., Jr. GP IEEE TI Evaluation of TESLA Code for Filter-Loaded Output Cavity Feature SO 2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) SE IEEE International Vacuum Electronics Conference IVEC LA English DT Proceedings Paper CT 17th IEEE International Vacuum Electronics Conference (IVEC) CY APR 19-21, 2016 CL Monterey, CA SP IEEE, Army Res Off, L 3, Electron Energy Corp, Ceradyne Inc, Appl Phys Technologies, Colorado Power Elect, Lockheed Martin, Commun & Power Ind, Leidos, Northrop Grumman, SSL, Teledyne Microwave Solut, Raytheon, Bridge 12, Beam Wave Res Inc, CBL Ceram Ltd, CST Amer Inc, HRC, e beam Incorporated, SMI, Tech X DE Filter-loaded output cavity; klystron ID SIMULATION AB Recently a new feature was added to the NRL 2.5D Klystron code called TESLA in collaboration with CPI. The feature involves modeling a klystron with a filter-loaded output cavity. The latter replaces a conventional unloaded single-gap output cavity in a klystron when wide bandwidth is needed. The feature was first evaluated by comparing with cold test data for a stand-alone output cavity. Later the full -blown TESLA predictions were compared with CPI 1-D code for drive curve and band-pass curve. C1 [Begum, Rasheda; Eisen, Edward; Legarra, Jim] Commun & Power Ind Inc, 811 Hansen Way, Palo Alto, CA 94304 USA. [Chernyavskiy, Igor A.; Vlasov, Alexander N.] US Naval Res Lab, Washington, DC 20375 USA. [Antonsen, Thomas M., Jr.] Leidos, Reston, VA 20190 USA. RP Begum, R (reprint author), Commun & Power Ind Inc, 811 Hansen Way, Palo Alto, CA 94304 USA. EM rasheda.begum@cpii.com RI Antonsen, Thomas/D-8791-2017 OI Antonsen, Thomas/0000-0002-2362-2430 NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9217-4 J9 IEEE INT VAC ELECT C PY 2016 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG0DO UT WOS:000386185700068 ER PT J AU Calame, JP Cook, AM Joye, CD Abe, DK AF Calame, Jeffrey P. Cook, Alan M. Joye, Colin D. Abe, David K. GP IEEE TI Microwave Absorbing Composites for Vacuum Electronics: New Material Compositions with Unusual Frequency Responses and Improved Characterization of Existing Materials SO 2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) SE IEEE International Vacuum Electronics Conference IVEC LA English DT Proceedings Paper CT 17th IEEE International Vacuum Electronics Conference (IVEC) CY APR 19-21, 2016 CL Monterey, CA SP IEEE, Army Res Off, L 3, Electron Energy Corp, Ceradyne Inc, Appl Phys Technologies, Colorado Power Elect, Lockheed Martin, Commun & Power Ind, Leidos, Northrop Grumman, SSL, Teledyne Microwave Solut, Raytheon, Bridge 12, Beam Wave Res Inc, CBL Ceram Ltd, CST Amer Inc, HRC, e beam Incorporated, SMI, Tech X DE ceramic; composite; dielectric; permittivity; copper oxide; aluminum oxide; beryllium oxide; silicon carbide; spinel; loss; absorber AB Microwave absorbing composites are of considerable importance in vacuum electronics, and therefore present an opportunity for further research. The synthesis and complex dielectric properties of new types of transition metal spinel-based microwave absorbing composites with unusual frequency responses are described. Also presented are improved dielectric measurements of more traditional BeO-SiC absorbers. C1 [Calame, Jeffrey P.; Cook, Alan M.; Joye, Colin D.; Abe, David K.] Naval Res Lab, Washington, DC 20375 USA. RP Calame, JP (reprint author), Naval Res Lab, Washington, DC 20375 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9217-4 J9 IEEE INT VAC ELECT C PY 2016 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG0DO UT WOS:000386185700096 ER PT J AU Chernyavskiy, IA Vlasov, AN Rodgers, JC Levush, B Antonsen, TM Chernin, DP AF Chernyavskiy, Igor A. Vlasov, Alexander N. Rodgers, John C. Levush, Baruch Antonsen, Thomas M., Jr. Chernin, David P. GP IEEE TI Large-signal Modeling of Vacuum Electronic Devices Based on Impedance Characterization of Slow-wave Structures SO 2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) SE IEEE International Vacuum Electronics Conference IVEC LA English DT Proceedings Paper CT 17th IEEE International Vacuum Electronics Conference (IVEC) CY APR 19-21, 2016 CL Monterey, CA SP IEEE, Army Res Off, L 3, Electron Energy Corp, Ceradyne Inc, Appl Phys Technologies, Colorado Power Elect, Lockheed Martin, Commun & Power Ind, Leidos, Northrop Grumman, SSL, Teledyne Microwave Solut, Raytheon, Bridge 12, Beam Wave Res Inc, CBL Ceram Ltd, CST Amer Inc, HRC, e beam Incorporated, SMI, Tech X DE large-signal code; arbitrary slow-wave structure; whole structure modes; circuit impedance matrix ID SIMULATION AB We report progress in the development of a 2D large-signal simulation code based on the use of modes of the impedance matrix that characterizes the slow-wave structure. We apply linear network approach in which input/output and interaction gaps are described as parts in a network. Finite element EM code is used to compute the frequency dependent impedance matrix of the network. The impedance matrix then is used in the large-signal algorithm to model the beam-wave interaction self-consistently in the device. Multiple-beam devices can be modeled in serial mode by using the approximation of identical beams, or in the more accurate, parallel mode by using an expanded impedance matrix for which each gap in each beam-tunnel is a port. First results of the newly developed algorithm and its validation by comparison with a PIC code and with experiment will be presented. C1 [Chernyavskiy, Igor A.; Vlasov, Alexander N.; Rodgers, John C.; Levush, Baruch] Naval Res Lab, Washington, DC USA. [Antonsen, Thomas M., Jr.; Chernin, David P.] Leidos Inc, Reston, VA 20190 USA. RP Chernyavskiy, IA (reprint author), Naval Res Lab, Washington, DC USA. RI Antonsen, Thomas/D-8791-2017 OI Antonsen, Thomas/0000-0002-2362-2430 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 978-1-4673-9217-4 J9 IEEE INT VAC ELECT C PY 2016 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG0DO UT WOS:000386185700067 ER PT J AU Cook, AM Joye, CD Albright, BS Calame, JP Abe, DK AF Cook, Alan M. Joye, Colin D. Albright, Benjamin S. Calame, Jeffrey P. Abe, David K. GP IEEE TI Microfabrication Methods for W-band TWT Circuits SO 2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) SE IEEE International Vacuum Electronics Conference IVEC LA English DT Proceedings Paper CT 17th IEEE International Vacuum Electronics Conference (IVEC) CY APR 19-21, 2016 CL Monterey, CA SP IEEE, Army Res Off, L 3, Electron Energy Corp, Ceradyne Inc, Appl Phys Technologies, Colorado Power Elect, Lockheed Martin, Commun & Power Ind, Leidos, Northrop Grumman, SSL, Teledyne Microwave Solut, Raytheon, Bridge 12, Beam Wave Res Inc, CBL Ceram Ltd, CST Amer Inc, HRC, e beam Incorporated, SMI, Tech X DE Electron tubes; lithography; millimeter wave tubes; millimeter wave amplifiers; traveling wave tubes; 3D printing; additive manufacturing AB Fabrication of slow-wave circuits for TWTs is challenging at frequencies in the upper millimeter-wave range, due to size and geometry limitations of available methods. We describe fabrication techniques being developed for mmW circuits based on microfabrication and additive manufacturing. We present progress on W-band serpentine waveguide circuits fabricated by UV-LIGA, 3D printing, and CNC machining. C1 [Cook, Alan M.; Joye, Colin D.; Albright, Benjamin S.; Calame, Jeffrey P.; Abe, David K.] US Naval Res Lab, Code 6850,4555 Overlook Ave SW, Washington, DC 20375 USA. RP Cook, AM (reprint author), US Naval Res Lab, Code 6850,4555 Overlook Ave SW, Washington, DC 20375 USA. NR 3 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9217-4 J9 IEEE INT VAC ELECT C PY 2016 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG0DO UT WOS:000386185700044 ER PT J AU Cooke, SJ Stantchev, GM Antonsen, TM AF Cooke, Simon J. Stantchev, George M. Antonsen, Thomas M., Jr. GP IEEE TI Accurate Electromagnetic Simulation of Dielectrics in Device Structures using Neptune SO 2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) SE IEEE International Vacuum Electronics Conference IVEC LA English DT Proceedings Paper CT 17th IEEE International Vacuum Electronics Conference (IVEC) CY APR 19-21, 2016 CL Monterey, CA SP IEEE, Army Res Off, L 3, Electron Energy Corp, Ceradyne Inc, Appl Phys Technologies, Colorado Power Elect, Lockheed Martin, Commun & Power Ind, Leidos, Northrop Grumman, SSL, Teledyne Microwave Solut, Raytheon, Bridge 12, Beam Wave Res Inc, CBL Ceram Ltd, CST Amer Inc, HRC, e beam Incorporated, SMI, Tech X DE electromagnetic simulation; embedded boundary method; vacuum electronics AB Dielectric materials play an important role in many classes of vacuum electronic device, but they present unique challenges to simulate accurately using time-domain Electromagnetic Particle-in-Cell (EM-PIC) codes. Results for previously published embedded boundary (or 'cut-cell') algorithms typically do not exhibit true 2nd-order convergence with respect to grid cell size when curved interfaces must be resolved, particularly when the ratio of dielectric constants across an interface is large. We demonstrate here a new algorithm for time-domain simulation of structures that successfully addresses this challenge and provides accurate results in a broad range of geometries. We have implemented the algorithm within the Neptune EM-PIC code to execute efficiently on fast GPUs or multicore CPUs, and will present results for specific device simulations. C1 [Cooke, Simon J.; Stantchev, George M.] Naval Res Lab, Electromagnet Technol Branch, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Antonsen, Thomas M., Jr.] Leidos Inc, 700 Technol Pk Dr, Billerica, MA USA. RP Cooke, SJ (reprint author), Naval Res Lab, Electromagnet Technol Branch, 4555 Overlook Ave SW, Washington, DC 20375 USA. RI Antonsen, Thomas/D-8791-2017 OI Antonsen, Thomas/0000-0002-2362-2430 NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9217-4 J9 IEEE INT VAC ELECT C PY 2016 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG0DO UT WOS:000386185700001 ER PT J AU Joye, CD Cook, AM Calame, JP Nguyen, KT Wright, EL Albright, BS Abel, DK Atkinson, J Kimura, T AF Joye, Colin D. Cook, Alan M. Calame, Jeffrey P. Nguyen, Khanh T. Wright, Edward L. Albright, Benjamin S. Abel, David K. Atkinson, John Kimura, Takuji GP IEEE TI Microfabricated 233 GHz Traveling Wave Amplifier SO 2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) SE IEEE International Vacuum Electronics Conference IVEC LA English DT Proceedings Paper CT 17th IEEE International Vacuum Electronics Conference (IVEC) CY APR 19-21, 2016 CL Monterey, CA SP IEEE, Army Res Off, L 3, Electron Energy Corp, Ceradyne Inc, Appl Phys Technologies, Colorado Power Elect, Lockheed Martin, Commun & Power Ind, Leidos, Northrop Grumman, SSL, Teledyne Microwave Solut, Raytheon, Bridge 12, Beam Wave Res Inc, CBL Ceram Ltd, CST Amer Inc, HRC, e beam Incorporated, SMI, Tech X DE Electron tubes; lithography; millimeter wave tubes; millimeter wave amplifiers; traveling wave tubes AB We present development progress for a 233 GHz hybrid serpentine waveguide TWT amplifier employing microfabrication techniques based on UV-LIGA. Maximum output power from the circuit is predicted to exceed 140 W from a 20 kV, 124 mA electron beam. Updates include progress of the circuit microfabrication and testing, window tuning, and electron gun. C1 [Joye, Colin D.; Cook, Alan M.; Calame, Jeffrey P.; Albright, Benjamin S.; Abel, David K.] US Naval Res Lab, Code 6850,4555 Overlook Ave SW, Washington, DC 20375 USA. [Nguyen, Khanh T.; Wright, Edward L.] Beam Wave Res Inc, Bethesda, MD 20814 USA. [Atkinson, John; Kimura, Takuji] Commun & Power Ind LLC, Palo Alto, CA 94304 USA. RP Joye, CD (reprint author), US Naval Res Lab, Code 6850,4555 Overlook Ave SW, Washington, DC 20375 USA. NR 4 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9217-4 J9 IEEE INT VAC ELECT C PY 2016 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG0DO UT WOS:000386185700048 ER PT J AU Petillo, J Ovtchinnikov, S Kostas, C Panagos, D Burke, A Nelson, E Stantchev, G Cooke, S AF Petillo, John Ovtchinnikov, Serguei Kostas, Chris Panagos, Dimitrios Burke, Alex Nelson, Eric Stantchev, George Cooke, Simon GP IEEE TI Developments in Parallelization and the User Environment of the MICHELLE Charged Particle Beam Optics Code SO 2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) SE IEEE International Vacuum Electronics Conference IVEC LA English DT Proceedings Paper CT 17th IEEE International Vacuum Electronics Conference (IVEC) CY APR 19-21, 2016 CL Monterey, CA SP IEEE, Army Res Off, L 3, Electron Energy Corp, Ceradyne Inc, Appl Phys Technologies, Colorado Power Elect, Lockheed Martin, Commun & Power Ind, Leidos, Northrop Grumman, SSL, Teledyne Microwave Solut, Raytheon, Bridge 12, Beam Wave Res Inc, CBL Ceram Ltd, CST Amer Inc, HRC, e beam Incorporated, SMI, Tech X DE MICHELLE; electron optics; electron gun code; HPC; GPU; Intel Xeon Phi; domain decomposition; multicore; multithreading; CAPSTONE; GSB ID ELECTRON-GUN AB The next generation of the MICHELLE ES PIC code is to improve its parallelization and leverages a number of existing and emerging DOD HPC architectures and software including distributed memory clusters, multicore, and computational accelerators such as GPUs and Intel Xeon Phi co-processors. The ongoing project supported by the DOD HASI program also aims to build interfaces between MICHELLE and existing HPC tools such as CAPSTONE, GSB, ParaView, and VisIt for efficient design and optimization workflow. This paper reports on the latest progress and discusses applicable algorithms and implementations. C1 [Petillo, John; Ovtchinnikov, Serguei; Kostas, Chris; Panagos, Dimitrios; Burke, Alex; Nelson, Eric] Leidos Corp, Billerica, MA 01820 USA. [Stantchev, George; Cooke, Simon] US Naval Res Lab, Washington, DC 20375 USA. RP Petillo, J (reprint author), Leidos Corp, Billerica, MA 01820 USA. NR 3 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9217-4 J9 IEEE INT VAC ELECT C PY 2016 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG0DO UT WOS:000386185700064 ER PT J AU Stantchev, G Cooke, S Petillo, J Ovtchinnikov, S Burke, A Kostas, C Panagos, D Antonsen, T AF Stantchev, George Cooke, Simon Petillo, John Ovtchinnikov, Serguei Burke, Alex Kostas, Chris Panagos, Dimitrios Antonsen, Thomas GP IEEE TI High Performance Parametric Design Optimization of RF Devices SO 2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) SE IEEE International Vacuum Electronics Conference IVEC LA English DT Proceedings Paper CT 17th IEEE International Vacuum Electronics Conference (IVEC) CY APR 19-21, 2016 CL Monterey, CA SP IEEE, Army Res Off, L 3, Electron Energy Corp, Ceradyne Inc, Appl Phys Technologies, Colorado Power Elect, Lockheed Martin, Commun & Power Ind, Leidos, Northrop Grumman, SSL, Teledyne Microwave Solut, Raytheon, Bridge 12, Beam Wave Res Inc, CBL Ceram Ltd, CST Amer Inc, HRC, e beam Incorporated, SMI, Tech X DE RF device simulation; RF amplifier; high-performance computing; numerical optimization; GPU computing; Neptune; MICHELLE; DAKOTA; Galaxy Simulation Builder AB We present an integrated environment for large scale multi-parameter design optimization of RF devices based on AFRL's Galaxy Simulation Builder productivity tool for distributed high-performance computing, Sandia National Lab's DAKOTA optimization library, and a suite of highly efficient GPU-based Electromagnetic codes developed at NRL in collaboration with Leidos, Inc. The environment allows for an end-toend optimization cycle of an RF device to be set up, deployed, carried out, monitored and analyzed in a quick, user-friendly, robust, and flexible fashion using a diverse variety of high-end parallel computing resources. C1 [Stantchev, George; Cooke, Simon] US Naval Res Lab, Washington, DC 20375 USA. [Petillo, John; Ovtchinnikov, Serguei; Burke, Alex; Kostas, Chris; Panagos, Dimitrios; Antonsen, Thomas] Leidos Inc, Billerica, MA 01821 USA. RP Stantchev, G (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM george.stantchev@nrl.navy.mil NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9217-4 J9 IEEE INT VAC ELECT C PY 2016 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG0DO UT WOS:000386185700003 ER PT J AU Vlasov, A Antonsen, T Chernyayskiy, I Chernin, D Rodgers, J Cooke, S Pasour, J AF Vlasov, Alexander Antonsen, Thomas, Jr. Chernyayskiy, Igor Chernin, David Rodgers, John Cooke, Simon Pasour, John GP IEEE TI Development of Simulation Tools for Design of Multiple Beam Folded Waveguide TWTs SO 2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) SE IEEE International Vacuum Electronics Conference IVEC LA English DT Proceedings Paper CT 17th IEEE International Vacuum Electronics Conference (IVEC) CY APR 19-21, 2016 CL Monterey, CA SP IEEE, Army Res Off, L 3, Electron Energy Corp, Ceradyne Inc, Appl Phys Technologies, Colorado Power Elect, Lockheed Martin, Commun & Power Ind, Leidos, Northrop Grumman, SSL, Teledyne Microwave Solut, Raytheon, Bridge 12, Beam Wave Res Inc, CBL Ceram Ltd, CST Amer Inc, HRC, e beam Incorporated, SMI, Tech X DE multiple beam devices; folded waveguide slow wave structure; traveling wave amplifiers ID RADIATION AB NRL large signal design codes have been developed recently to be suitable for accurate simulations of multiple beam traveling wave tubes (MB-TWT). MB-TWTs are attractive novel devices with enhanced power-bandwidth characteristics. However, they are more vulnerable to spurious oscillations than single beam TWTs. The results of performance and stability analysis of MB-TWTs with 3D EM codes, NRL 3D PIC code Neptune and recently developed 1D and 2.5D design codes TESLA-FW and CHRISTINE-FW are presented and discussed. C1 [Vlasov, Alexander; Chernyayskiy, Igor; Rodgers, John; Cooke, Simon; Pasour, John] Naval Res Lab, Washington, DC 20375 USA. [Antonsen, Thomas, Jr.; Chernin, David] Leidos Inc, Reston, VA 20191 USA. RP Vlasov, A (reprint author), Naval Res Lab, Washington, DC 20375 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 BN 978-1-4673-9217-4 J9 IEEE INT VAC ELECT C PY 2016 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BG0DO UT WOS:000386185700004 ER PT S AU Baylis, C Fellows, M Barkate, J Tsatsoulas, A Rezayat, S Lamers, L Marks, RJ Cohen, L AF Baylis, Charles Fellows, Matthew Barkate, Joseph Tsatsoulas, Alexander Rezayat, Sarvin Lamers, Lucilia Marks, Robert J., II Cohen, Lawrence GP IEEE TI Circuit Optimization Algorithms for Real-Time Spectrum Sharing Between Radar and Communications SO 2016 IEEE RADAR CONFERENCE (RADARCONF) SE IEEE Radar Conference LA English DT Proceedings Paper CT IEEE Radar Conference (RadarConf) CY MAY 02-06, 2016 CL Philadelphia, PA SP IEEE DE Smith Chart; power amplifiers; optimization; power-added efficiency; adjacent-channel power ratio ID POWER-AMPLIFIER; IMPEDANCE AB The ability of radar and communication applications to share the radio spectrum will require the use of innovative agile circuit techniques for radar and communications. Reconfigurable circuits can provide real-time adjustment of operating frequency and spectral output, while maintaining system performance and maximizing power efficiency. This paper discusses recent developments in circuit optimization techniques for power efficiency and spectral performance. Optimization of a single parameter (load reflection coefficient) for multiple criteria is first addressed, followed by multiple-parameter, multiple-criteria optimizations. The use of the recently innovated Smith Tube to optimize additional parameters, such as input power and bias voltage, simultaneously with the load impedance is discussed. Optimization examples and a forward look to fast, emerging multidimensional circuit optimization techniques are provided. C1 [Baylis, Charles; Fellows, Matthew; Barkate, Joseph; Tsatsoulas, Alexander; Rezayat, Sarvin; Lamers, Lucilia; Marks, Robert J., II] Baylor Univ, Wireless & Microwave Circuits & Syst Program, Waco, TX 76798 USA. [Cohen, Lawrence] US Naval Res Lab, Div Radar, Washington, DC USA. RP Baylis, C (reprint author), Baylor Univ, Wireless & Microwave Circuits & Syst Program, Waco, TX 76798 USA. EM Charles_Baylis@baylor.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 SN 1097-5764 BN 978-1-5090-0863-6 J9 IEEE RAD CONF PY 2016 BP 12 EP 15 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG0MM UT WOS:000386327800003 ER PT S AU Jakabosky, J Ravenscroft, B Blunt, SD Martone, A AF Jakabosky, John Ravenscroft, Brandon Blunt, Shannon D. Martone, Anthony GP IEEE TI Gapped Spectrum Shaping for Tandem-Hopped Radar/Communications & Cognitive Sensing SO 2016 IEEE RADAR CONFERENCE (RADARCONF) SE IEEE Radar Conference LA English DT Proceedings Paper CT IEEE Radar Conference (RadarConf) CY MAY 02-06, 2016 CL Philadelphia, PA SP IEEE ID WAVE-FORM DESIGN; RADAR; TRANSMIT AB A non-repeating FMCW waveform was recently developed and experimentally demonstrated to provide a feasible instantiation of FM noise radar. This emission scheme was subsequently examined in terms of the impact of both stationary and hopped spectral gaps with the prospect of enabling in-band interference avoidance for cognitive sensing and possibly tandem hopped radar/communications. Here this gap-hopped spectrum framework is further explored with regard to the relation between the shaping of spectral gaps and the associated time sidelobe response. Experimental loopback measurements are shown that provide a sense of how this form of emission would operate on a real system. C1 [Jakabosky, John; Ravenscroft, Brandon; Blunt, Shannon D.] Univ Kansas, Radar Syst Lab, Lawrence, KS 66045 USA. [Jakabosky, John] Naval Res Lab, Div Radar, Washington, DC 20375 USA. [Martone, Anthony] US Army, Res Lab, Adelphi, MD USA. RP Jakabosky, J (reprint author), Univ Kansas, Radar Syst Lab, Lawrence, KS 66045 USA.; Jakabosky, J (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 USA. NR 19 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1097-5764 BN 978-1-5090-0863-6 J9 IEEE RAD CONF PY 2016 BP 22 EP 27 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG0MM UT WOS:000386327800005 ER PT S AU Raj, RG Jansen, RW Sletten, MA AF Raj, Raghu G. Jansen, Robert W. Sletten, Mark A. GP IEEE TI A Sparsity based approach to Velocity SAR Imaging SO 2016 IEEE RADAR CONFERENCE (RADARCONF) SE IEEE Radar Conference LA English DT Proceedings Paper CT IEEE Radar Conference (RadarConf) CY MAY 02-06, 2016 CL Philadelphia, PA SP IEEE DE Imaging; Synthetic Aperture Radar (SAR); Multichannel SAR (MSAR); Sparsity; Velocity Processing; Wavelets AB We recently successfully developed an airborne MSAR (Multichannel Synthetic Aperture Radar) test bed system that consists of 32 along-track phase centers through the use of two transmit horns and 16 receive antennas [1-4]. We have subsequently deployed this system, both in September 2014 and more recently in October 2015, to perform extensive and systematic data collections on a variety of land-based and maritime targets under different environmental conditions. The resulting data poses important signal processing challenges pertaining to optimum ways of combining the signals obtained from various channels so that the underlying information of interest can be effectively extracted in the presence of noise and clutter. In this paper we focus on the imaging problem and propose a novel method of simultaneously exploiting the multichannel structure of the data acquisition and the underlying sparse structure of the scene being imaged. After giving a brief overview of our airborne NRL MSAR system and the basics of velocity processing, we proceed to describe our novel algorithm and demonstrate our initial experimental results. The novelty of this paper is two-fold: to the best of our knowledge, this is first time that velocity processing has been used in conjunction with sparsity based processing; and that the resulting approach is applied to real data captured by our airborne NRL MSAR system. C1 [Raj, Raghu G.; Jansen, Robert W.; Sletten, Mark A.] US Naval Res Lab, Washington, DC 20375 USA. RP Raj, RG (reprint author), US Naval Res Lab, Washington, DC 20375 USA. 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 SN 1097-5764 BN 978-1-5090-0863-6 J9 IEEE RAD CONF PY 2016 BP 282 EP 287 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG0MM UT WOS:000386327800053 ER PT S AU McCormick, PM Blunt, SD Higgins, T AF McCormick, Patrick M. Blunt, Shannon D. Higgins, Thomas GP IEEE TI A Gradient Descent Implementation of Adaptive Pulse Compression SO 2016 IEEE RADAR CONFERENCE (RADARCONF) SE IEEE Radar Conference LA English DT Proceedings Paper CT IEEE Radar Conference (RadarConf) CY MAY 02-06, 2016 CL Philadelphia, PA SP IEEE DE adaptive filtering; gradient descent AB Gradient descent is an iterative method of determining the minima or maxima of a function. The algorithm can be used to solve a linear system of equations when the computational cost of a matrix inverse is too expensive for an application. Here, gradient descent is applied to Adaptive Pulse Compression (APC), yielding the GraD-APC algorithm. Specifically, a unit-gain constrained version of GraD-APC with optimal step size is derived for use with frequency modulated (FM) waveforms, particularly for cases in which the waveform time-bandwidth product is large enough to prohibit practical use of the original matrix inverse based APC. The range-profile estimation of GraD-APC is compared to that of fully adaptive APC using both simulated and experimentally measured data. C1 [McCormick, Patrick M.; Blunt, Shannon D.] Univ Kansas, Radar Syst Lab, Lawrence, KS 66045 USA. [Higgins, Thomas] Naval Res Lab, Div Radar, Washington, DC 20375 USA. RP McCormick, PM (reprint author), Univ Kansas, Radar Syst Lab, Lawrence, KS 66045 USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1097-5764 BN 978-1-5090-0863-6 J9 IEEE RAD CONF PY 2016 BP 411 EP 415 PG 5 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG0MM UT WOS:000386327800078 ER PT S AU Abramovich, YI Antonio, GS AF Abramovich, Yuri I. Antonio, Geoffrey San GP IEEE TI Non-Fluctuating Target Detection in Fluctuating K-Distributed Interference and Noise SO 2016 IEEE RADAR CONFERENCE (RADARCONF) SE IEEE Radar Conference LA English DT Proceedings Paper CT IEEE Radar Conference (RadarConf) CY MAY 02-06, 2016 CL Philadelphia, PA SP IEEE DE K distributed noise; generalized likelihood ratio test; extreme statistics ID COMPOUND-GAUSSIAN CLUTTER; RADAR DETECTION AB This paper deals with the problem of non-fluctuating target detection in the presence of a mixture of heavy tailed K-distributed clutter and independent noise. Prior papers have derived generalized likelihood ratio tests (GLRT) for this problem as well as approximations of the GLRT. These results show the required optimum processing and its vastly different efficiency as compared to similar results derived under standard Gaussian assumptions. In this study we examine the detection performance of several proposed detectors using numerical simulation techniques. We demonstrate their performance under different clutter and noise conditions. We also propose a two-stage detection scheme for a multi-observation multi-channel detection problem. C1 [Abramovich, Yuri I.] WR Syst, Fairfax, VA 22030 USA. [Antonio, Geoffrey San] US Naval Res Lab, Washington, DC 20375 USA. RP Abramovich, YI (reprint author), WR Syst, Fairfax, VA 22030 USA. NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1097-5764 BN 978-1-5090-0863-6 J9 IEEE RAD CONF PY 2016 BP 975 EP 979 PG 5 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG0MM UT WOS:000386327800189 ER PT S AU Meager, G Romero, RA Staples, Z AF Meager, Geoffrey Romero, Ric A. Staples, Zachary GP IEEE TI Estimation and Cancellation of High Powered Radar Interference for Communication Signal Collection SO 2016 IEEE RADAR CONFERENCE (RADARCONF) SE IEEE Radar Conference LA English DT Proceedings Paper CT IEEE Radar Conference (RadarConf) CY MAY 02-06, 2016 CL Philadelphia, PA SP IEEE DE parameter estimation; matched-filter detection; QPSK; radar; interference; LSE AB In this paper, we investigate the demodulation of a communication signal that is interfered by a high-powered radar signal. We choose quaternary phase-shift keying (QPSK) modulation for illustration. A least squares estimator (LSE) is used to estimate the amplitude and phase of the interfering radar signal to be used for interference cancellation. Then a maximum likelihood detection (MLD) receiver is used. We show that the QPSK SER improvement in the radar interference environment depends on collection time. For large collection times, the SER approaches the theoretical SER for QPSK. Unfortunately, as the collection time decreases the variance of the radar estimate increases, which degrades the SER. Further, we show increases in radar estimate variance as the QPSK SNR increases, which affects the SER. We propose a form of interference cancellation based on estimating the radar signal and then subtracting it from the received signal prior to MLD of the communication signal. C1 [Meager, Geoffrey; Romero, Ric A.; Staples, Zachary] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Meager, G (reprint author), Naval Postgrad Sch, Monterey, CA 93943 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 1097-5764 BN 978-1-5090-0863-6 J9 IEEE RAD CONF PY 2016 BP 1034 EP 1037 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG0MM UT WOS:000386327800201 ER PT S AU Dorsey, WM Scholnik, DP AF Dorsey, W. Mark Scholnik, Dan P. GP IEEE TI Transmit and Receive Circular Array Pattern Synthesis for Radar Applications SO 2016 IEEE RADAR CONFERENCE (RADARCONF) SE IEEE Radar Conference LA English DT Proceedings Paper CT IEEE Radar Conference (RadarConf) CY MAY 02-06, 2016 CL Philadelphia, PA SP IEEE DE Antenna phased arrays; Optimization; Beamforming arrays; Radar AB Circular arrays are an appealing if underused option for radar systems that require 360 degrees coverage in azimuth. They require no mechanical scanning and do not suffer from the high-angle scan loss and beam broadening of linear and planar arrays. The circular geometry, along with suitable pattern synthesis techniques, enables some unique capabilities. On transmit they provide the flexibilty to synthesize a continuum of beam shapes, from omnidirectional to sector to high gain. On receive, simultaneous high-gain beams can be formed to cover any desired azimuth footprint. In this paper we explore the capabilities of circular arrays through a series of pattern synthesis design examples. C1 [Dorsey, W. Mark; Scholnik, Dan P.] US Naval Res Lab, Div Radar, Washington, DC 20375 USA. RP Dorsey, WM (reprint author), US Naval Res Lab, Div Radar, Washington, DC 20375 USA. EM mark.dorsey@nrl.navy.mil 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 SN 1097-5764 BN 978-1-5090-0863-6 J9 IEEE RAD CONF PY 2016 BP 1109 EP 1114 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG0MM UT WOS:000386327800215 ER PT S AU Jakabosky, J Blunt, SD Himed, B AF Jakabosky, John Blunt, Shannon D. Himed, Braham GP IEEE TI Spectral-Shape Optimized FM Noise Radar for Pulse Agility SO 2016 IEEE RADAR CONFERENCE (RADARCONF) SE IEEE Radar Conference LA English DT Proceedings Paper CT IEEE Radar Conference (RadarConf) CY MAY 02-06, 2016 CL Philadelphia, PA SP IEEE ID WAVE-FORMS AB A non-repeating, spectrum-optimized FM waveform suitable for radar pulse agility is described. The waveform is an alternative manifestation of the recently developed pseudo-random optimized (PRO) FMCW framework for FM noise radar, now implemented in a pulsed form. Each pulsed FM waveform is iteratively optimized to match a spectrum shape with low range sidelobes and good spectral properties, while the random initialization for each waveform ensures sufficient diversity that the resulting optimized form is unique, thereby providing decoherence of range sidelobes. The performance of this pulse-agile structure is examined in simulation and subsequently demonstrated with measured results of static and moving targets. C1 [Jakabosky, John; Blunt, Shannon D.] Univ Kansas, Radar Syst Lab, Lawrence, KS 66045 USA. [Jakabosky, John] Naval Res Lab, Div Radar, Washington, DC 20375 USA. [Himed, Braham] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH USA. RP Jakabosky, J (reprint author), Univ Kansas, Radar Syst Lab, Lawrence, KS 66045 USA.; Jakabosky, J (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 USA. NR 23 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1097-5764 BN 978-1-5090-0863-6 J9 IEEE RAD CONF PY 2016 BP 1215 EP 1220 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BG0MM UT WOS:000386327800236 ER PT J AU Maynord, M Bhattacharya, S Aha, DW AF Maynord, Michael Bhattacharya, Sambit Aha, David W. GP IEEE TI Image Surveillance Assistant SO 2016 IEEE WINTER APPLICATIONS OF COMPUTER VISION WORKSHOPS (WACVW) LA English DT Proceedings Paper CT IEEE Winter Applications of Computer Vision Workshops (WACVW) CY MAR 10, 2016 CL Lake Placid, NY SP IEEE AB Security watchstanders who monitor multiple videos over long periods of time can be susceptible to information overload and fatigue. To address this, we present a configurable perception pipeline architecture, called the Image Surveillance Assistant (ISA), for assisting watchstanders with video surveillance tasks. We also present ISA(1), an initial implementation that can be configured with a set of context specifications which watchstanders can select or provide to indicate what imagery should generate notifications. ISA(1)'s inputs include (1) an image and (2) context specifications, which contain English sentences and a decision boundary defined over object detection vectors. ISA(1) assesses the match of the image with the contexts by comparing (1) detected versus specified objects and (2) automatically-generated versus specified captions. Finally, we present a study to assess the utility of using captions in ISA(1), and found that they substantially improve the performance of image context detection. C1 [Maynord, Michael] Univ Maryland, Dept Comp Sci, College Pk, MD 20742 USA. [Bhattacharya, Sambit] Fayetteville State Univ, Dept Math & Comp Sci, Fayetteville, NC 28301 USA. [Aha, David W.] Naval Res Lab, Navy Ctr Appl Res AI, Code 5514, Washington, DC 20375 USA. RP Maynord, M (reprint author), Univ Maryland, Dept Comp Sci, College Pk, MD 20742 USA. EM maynord@umd.edu; sbhattac@uncfsu.edu; david.aha@nrl.navy.mil 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 978-1-5090-2114-7 PY 2016 PG 7 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG0KW UT WOS:000386313400006 ER PT J AU Buckhout-White, S Brown, CW Hastman, DA Ancona, MG Melinger, JS Goldman, ER Medintz, IL AF Buckhout-White, Susan Brown, Carl W., III Hastman, David A., Jr. Ancona, Mario G. Melinger, Joseph S. Goldman, Ellen R. Medintz, Igor L. TI Expanding molecular logic capabilities in DNA-scaffolded multiFRET triads SO RSC ADVANCES LA English DT Article ID RESONANCE ENERGY-TRANSFER; PERSONALIZED MEDICINE; RESISTANCE GENES; QUANTUM DOTS; FLUORESCENCE; CIRCUITS; FRET; COMPUTATION; TECHNOLOGY AB Dynamic rearrangement of DNA nanostructures provides a straightforward yet powerful mechanism for sequence-specific sensing and potential signaling of such interactions. These rearrangements are often interpreted in the context of Boolean logic gates as a means of both reflecting the underlying sensing and providing preliminary processing of the raw data. Here, we expand on previous work to optimize both the sensing and signal transduction of an initial DNA-triad sensor prototype. The core structure of this DNA triad consists of dye-labeled arms connected by 1, 2, or 3 single-stranded DNA linkers, whose presence and length alter the efficiency of Forster resonance energy transfer (FRET) between the dyes. The latter forms the basis for sensing through the use of DNA hybridization and displacement which result in structural rearrangements with each configuration correlated to a different logic state. Three different avenues were pursued to optimize the sensor function: (1) restructuring the connecting linkers and dye-choices in the original structure; (2) changing the mechanism of distance modulation between the arms; and (3) moving the signaling dyes to within the single-stranded portion of the structure. The first approach provided for improvements in FRET properties and the ability to reconfigure and switch the sensors between different types of Boolean logic gates such as going from INHIBIT 1 to Enabled OR by changing dyes, for example. The last approach proved to be the most versatile providing for the largest changes in FRET along with the ability to be repeatedly toggled and reset for multiple sequential sensing events. Switching could be completed in an isothermal manner with a near stoichiometric concentration of inputs and input complements. The continued development and potential applications of these and similar types of DNA sensors are discussed. C1 [Buckhout-White, Susan; Brown, Carl W., III; Hastman, David A., Jr.; Goldman, Ellen R.; Medintz, Igor L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA. [Ancona, Mario G.; Melinger, Joseph S.] US Naval Res Lab, Elect Sci & Technol Div, Code 6876, Washington, DC 20375 USA. [Brown, Carl W., III] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA. RP Medintz, IL (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA. EM Igor.medintz@nrl.navy.mil FU ONR; DTRA; NRL; NRL-NSI; LUCI grants of the NSSEFF program through the OSD FX Financial support is gratefully acknowledged from ONR, DTRA, NRL, the NRL-NSI and LUCI grants in support of the NSSEFF program through the OSD. NR 51 TC 1 Z9 1 U1 1 U2 1 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2046-2069 J9 RSC ADV JI RSC Adv. PY 2016 VL 6 IS 100 BP 97587 EP 97598 DI 10.1039/c6ra23079b PG 12 WC Chemistry, Multidisciplinary SC Chemistry GA EA0XO UT WOS:000386312700014 ER PT J AU Urick, VJ AF Urick, Vincent J. GP IEEE TI Considerations and Application Opportunities for Integrated Microwave Photonics SO 2016 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC) LA English DT Proceedings Paper CT Optical Fiber Communications Conference and Exhibition (OFC) CY MAR 20-24, 2016 CL Anaheim, CA ID CIRCUITS AB Integrated microwave photonics has become a topic of considerable research, due in part to the breakthroughs in photonic integrated circuits for industrial telecommunications. A critical assessment of this trend is presented, including important considerations that are lacking in the emerging integrated microwave photonics community The design space for microwave photonics is reviewed in the context of the "link on a chip" concept. Niche application areas for integrated microwave photonics based on optically coherent techniques are highlighted. C1 [Urick, Vincent J.] Naval Res Lab, Appl RF Photon Sect, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Urick, VJ (reprint author), Naval Res Lab, Appl RF Photon Sect, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM vincent.urick@nrl.navy.mil NR 29 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-9435-8007-1 PY 2016 PG 3 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BF6BN UT WOS:000382938100007 ER PT J AU Davis, MC Groshens, TJ AF Davis, Matthew C. Groshens, Thomas J. TI A new synthesis route for the preparation of the avocadofuran (2-hexadecylfuran) SO ARKIVOC LA English DT Article DE Furfuraldehyde; Perkin reaction; Lindlar catalyst; insecticide; avocadofurans ID ACID; PEAR AB A new synthetic route for the preparation of the insecticidal compound 2-hexadecylfuran is described in this study. The procedure starts from readily available furfuraldehyde and palmitic anhydride via two steps employing the Perkin reaction and resulting in a 25% overall yield. The method can be deemed as a practical and environmentally friendly route to prepare a potentially important class of insecticide. C1 [Davis, Matthew C.; Groshens, Thomas J.] Naval Air Warfare Ctr, Michelson Lab, Chem & Mat Div, China Lake, CA 93555 USA. RP Davis, MC (reprint author), Naval Air Warfare Ctr, Michelson Lab, Chem & Mat Div, China Lake, CA 93555 USA. EM matthew.davis@navy.mil FU Strategic Environmental Research and Development Program (SERDP) FX This research was made possible by the generous financial support from the Strategic Environmental Research and Development Program (SERDP). The authors are indebted to Professor Emeritus J.-P. Anselme for kindly editing the manuscript. The authors would also like to thank Mary Ray and Mara Bowen of the Technical Library (NAWCWD) for assistance in collecting several literature citations. We also thank Professor Emeritus John Capinera of the University of Florida, Professor David Riley of the University of Georgia and Professor John Trumble of the University of California Riverside for information about Spodoptera and permission to use a photograph. NR 22 TC 0 Z9 0 U1 2 U2 2 PU ARKAT USA INC PI GAINESVILLE PA C/O ALAN R KATRITZKY, UNIV FLORIDA, DEPT CHEMISTRY, PO BOX 117200, GAINESVILLE, FL 32611 USA SN 1551-7004 EI 1551-7012 J9 ARKIVOC JI Arkivoc PY 2016 BP 242 EP 248 DI 10.3998/ark.5550190.p009.718 PN 5 PG 7 WC Chemistry, Organic SC Chemistry GA DZ4BC UT WOS:000385801100016 ER PT J AU Belanger, HG Lange, RT Bailie, J Iverson, GL Arrieux, JP Ivins, BJ Cole, WR AF Belanger, Heather G. Lange, Rael T. Bailie, Jason Iverson, Grant L. Arrieux, Jacques P. Ivins, Brian J. Cole, Wesley R. TI Interpreting change on the neurobehavioral symptom inventory and the PTSD checklist in military personnel SO CLINICAL NEUROPSYCHOLOGIST LA English DT Article DE Traumatic brain injury; mild TBI; PTSD; military; concussion; reliable change ID TRAUMATIC BRAIN-INJURY; POSTTRAUMATIC-STRESS-DISORDER; POSTCONCUSSION SYMPTOMS; CLINICAL-SIGNIFICANCE; CIVILIAN VERSION; SERVICE MEMBERS; NATIONAL-GUARD; NORMATIVE DATA; IRAQ; ASSOCIATIONS AB Objective: The purpose of this study was to examine the prevalence and stability of symptom reporting in a healthy military sample and to develop reliable change indices for two commonly used self-report measures in the military health care system. Participants and method: Participants were 215 U.S. active duty service members recruited from Fort Bragg, NC as normal controls as part of a larger study. Participants completed the Neurobehavioral Symptom Inventory (NSI) and Posttraumatic Checklist (PCL) twice, separated by approximately 30days. Results: Depending on the endorsement level used (i.e. ratings of mild' or greater vs. ratings of moderate' or greater), approximately 2-15% of this sample met DSM-IV symptom criteria for Postconcussional Disorder across time points, while 1-6% met DSM-IV symptom criteria for Posttraumatic Stress Disorder. Effect sizes for change from Time 1 to Time 2 on individual symptoms were small (Cohen's d=.01 to .13). The test-retest reliability for the NSI total score was r=.78 and the PCL score was r=.70. An eight-point change in symptom reporting represented reliable change on the NSI total score, with a seven-point change needed on the PCL. Conclusions: Postconcussion-like symptoms are not unique to mild TBI and are commonly reported in a healthy soldier sample. It is important for clinicians to use normative data when evaluating a service member or veteran and when evaluating the likelihood that a change in symptom reporting is reliable and clinically meaningful. C1 [Belanger, Heather G.] James A Haley VAMC, Dept Mental Hlth & Behav Sci, Tampa, FL 33612 USA. [Belanger, Heather G.] Univ S Florida, Dept Psychiat & Behav Neurosci, Tampa, FL 33620 USA. [Belanger, Heather G.; Lange, Rael T.; Bailie, Jason; Iverson, Grant L.; Arrieux, Jacques P.; Ivins, Brian J.; Cole, Wesley R.] Def & Vet Brain Injury Ctr, Silver Spring, MD 20910 USA. [Lange, Rael T.] Natl Intrepid Ctr Excellence, Bethesda, MD USA. [Lange, Rael T.] Walter Reed Natl Mil Med Ctr, Bethesda, MD USA. [Lange, Rael T.] Univ British Columbia, Vancouver, BC, Canada. [Bailie, Jason] Naval Hosp, Camp Pendleton, CA USA. [Iverson, Grant L.] Harvard Med Sch, Boston, MA USA. [Iverson, Grant L.] Spaulding Rehabil Hosp, Charlestown, MA USA. [Iverson, Grant L.] Red Sox Fdn, Boston, MA USA. [Iverson, Grant L.] Massachusetts Gen Hosp, Home Base Program, Boston, MA 02114 USA. [Arrieux, Jacques P.; Cole, Wesley R.] Womack Army Med Ctr, Ft Bragg, NC USA. RP Belanger, HG (reprint author), James A Haley VAMC, Dept Mental Hlth & Behav Sci, Tampa, FL 33612 USA.; Belanger, HG (reprint author), Univ S Florida, Dept Psychiat & Behav Neurosci, Tampa, FL 33620 USA.; Belanger, HG (reprint author), Def & Vet Brain Injury Ctr, Silver Spring, MD 20910 USA. EM Heather.Belanger@va.gov NR 40 TC 0 Z9 0 U1 2 U2 2 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 1385-4046 EI 1744-4144 J9 CLIN NEUROPSYCHOL JI Clin. Neuropsychol. PY 2016 VL 30 IS 7 BP 1063 EP 1073 DI 10.1080/13854046.2016.1193632 PG 11 WC Psychology, Clinical; Clinical Neurology; Psychology SC Psychology; Neurosciences & Neurology GA DY9FU UT WOS:000385440100009 PM 27266484 ER PT S AU Shivashankarand, V Alford, R Roberts, M Aha, DW AF Shivashankarand, Vikas Alford, Ron Roberts, Mark Aha, David W. BE Kaminka, GA Fox, M Bouquet, P Hullermeier, E Dignum, V Dignum, F VanHarmelen, F TI Cost-Optimal Algorithms for Planning with Procedural Control Knowledge SO ECAI 2016: 22ND EUROPEAN CONFERENCE ON ARTIFICIAL INTELLIGENCE SE Frontiers in Artificial Intelligence and Applications LA English DT Proceedings Paper CT 22nd European Conference on Artificial Intelligence (ECAI) CY AUG 29-SEP 02, 2016 CL Hague, NETHERLANDS SP European Assoc Artificial Intelligence, PricewaterhouseCoopers, Taylor & Francis Grp, Essence ITN Network, Vrije Univ Amsterdam ID LANDMARKS C1 [Shivashankarand, Vikas] Knexus Res Corp, Natl Harbor, MD 20745 USA. [Alford, Ron] MITRE, Mclean, VA USA. [Roberts, Mark; Aha, David W.] Naval Res Lab, Washington, DC 20375 USA. RP Shivashankarand, V (reprint author), Knexus Res Corp, Natl Harbor, MD 20745 USA. EM vikas.shivashankar@knexusresearch.com; ralford@mitre.org; mark.roberts.ctr@nrl.navy.mil; david.aha@nrl.navy.mil NR 8 TC 0 Z9 0 U1 0 U2 0 PU IOS PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 0922-6389 BN 978-1-61499-672-9; 978-1-61499-671-2 J9 FRONT ARTIF INTEL AP PY 2016 VL 285 BP 1702 EP 1703 DI 10.3233/978-1-61499-672-9-1702 PG 2 WC Computer Science, Artificial Intelligence SC Computer Science GA BF9PP UT WOS:000385793700255 ER PT S AU Ouyang, B Hou, WL Gong, CL Caimi, FM Dalgleish, FR Vuorenkoski, AK Xiao, XF Voelz, DG AF Ouyang, Bing Hou, Weilin Gong, Cuiling Caimi, Frank M. Dalgleish, Fraser R. Vuorenkoski, Anni K. Xiao, Xifeng Voelz, David G. BE Douglass, MR King, PS Lee, BL TI Experimental Study of a DMD Based Compressive Line Sensing Imaging System in the Turbulence Environment SO EMERGING DIGITAL MICROMIRROR DEVICE BASED SYSTEMS AND APPLICATIONS VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Emerging Digital Micromirror Device Based Systems and Applications VIII CY FEB 15-17, 2016 CL San Francisco, CA SP SPIE, DLP Texas Instruments DE Compressive sensing; DMD; imaging through turbulence AB The Compressive Line Sensing (CLS) active imaging system has been demonstrated to be effective in scattering mediums, such as coastal turbid water, fog and mist, through simulations and test tank experiments. The CLS prototype hardware consists of a CW laser, a DMD, a photomultiplier tube, and a data acquisition instrument. CLS employs whiskbroom imaging formation that is compatible with traditional survey platforms. The sensing model adopts the distributed compressive sensing theoretical framework that exploits both intra-signal sparsity and highly correlated nature of adjacent areas in a natural scene. During sensing operation, the laser illuminates the spatial light modulator DMD to generate a series of 1D binary sensing pattern from a codebook to "encode" current target line segment. A single element detector PMT acquires target reflections as encoder output. The target can then be recovered using the encoder output and a predicted on-target codebook that reflects the environmental interference of original codebook entries. In this work, we investigated the effectiveness of the CLS imaging system in a turbulence environment. Turbulence poses challenges in many atmospheric and underwater surveillance applications. A series of experiments were conducted in the Naval Research Lab's optical turbulence test facility with the imaging path subjected to various turbulence intensities. The total-variation minimization sparsifying basis was used in imaging reconstruction. The preliminary experimental results showed that the current imaging system was able to recover target information under various turbulence strengths. The challenges of acquiring data through strong turbulence environment and future enhancements of the system will be discussed. C1 [Ouyang, Bing; Caimi, Frank M.; Dalgleish, Fraser R.; Vuorenkoski, Anni K.] Florida Atlantic Univ, Harbor Branch Oceanog Inst, 5600 US1 North, Ft Pierce, FL 34946 USA. [Hou, Weilin] Naval Res Lab, 1009 Balch Blvd, Stennis Space Ctr, MS 39529 USA. [Gong, Cuiling] Texas Christian Univ, Dept Engn, TCU BOX 298640, Ft Worth, TX 76129 USA. [Xiao, Xifeng; Voelz, David G.] New Mexico State Univ, Klipsch Sch Elect & Comp Engn, Las Cruces, NM 88003 USA. RP Ouyang, B (reprint author), Florida Atlantic Univ, Harbor Branch Oceanog Inst, 5600 US1 North, Ft Pierce, FL 34946 USA. EM bouyang@hboi.fau.edu NR 19 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-62841-996-2 J9 PROC SPIE PY 2016 VL 9761 AR 97610K DI 10.1117/12.2212426 PG 8 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF6RI UT WOS:000383611000013 ER PT B AU Mea, WJ Wall, RJ AF Mea, William J. Wall, Richard J., Jr. BE Sims, RR Quatro, SA TI A HUMAN DIGNITY APPROACH TO BUSINESS ETHICS FOR EXECUTIVES SO EXECUTIVE ETHICS II: ETHICAL DILEMMAS AND CHALLENGES FOR THE C-SUITE LA English DT Article; Book Chapter C1 [Mea, William J.] US Dept Labor, Off Disabil Employment Policy, Chicago, IL USA. [Mea, William J.] US Naval Acad, Annapolis, MD 21402 USA. [Wall, Richard J., Jr.] Cerner Corp, Kansas City, MO USA. NR 30 TC 0 Z9 0 U1 0 U2 0 PU INFORMATION AGE PUBLISHING-IAP PI CHARLOTTE PA PO BOX 79049, CHARLOTTE, NC 28271-7047 USA BN 978-1-68123-538-7; 978-1-68123-539-4 PY 2016 BP 327 EP 358 PG 32 WC Business; Management SC Business & Economics GA BF7FM UT WOS:000384032500017 ER PT J AU Manosalva, R Panwar, A AF Manosalva, Rodolfo Panwar, Aru TI The diagnostic challenge of salivary gland malignancies SO EXPERT REVIEW OF ANTICANCER THERAPY LA English DT Editorial Material DE Salivary gland; malignancy; diagnosis; fine needle aspiration (FNA); cytology; pre-operative imaging ID FINE-NEEDLE-ASPIRATION; PAROTID-GLAND; TUMOROUS LESIONS; CORE BIOPSY; ULTRASOUND; CARCINOMA; ACCURACY; CYTOLOGY; NECK C1 [Manosalva, Rodolfo] Naval Med Ctr Portsmouth, Dept Otolaryngol Head & Neck Surg, Portsmouth, VA USA. [Panwar, Aru] Univ Nebraska Med Ctr, Div Head & Neck Surg, Dept Otolaryngol Head & Neck Surg, Omaha, NE USA. [Panwar, Aru] Nebraska Methodist Hosp, Head & Neck Surg Oncol, Omaha, NE USA. RP Panwar, A (reprint author), 981225 Nebraska Med Ctr, Omaha, NE 68198 USA. EM aru.panwar@unmc.edu NR 17 TC 1 Z9 1 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND SN 1473-7140 EI 1744-8328 J9 EXPERT REV ANTICANC JI Expert Rev. Anticancer Ther PY 2016 VL 16 IS 10 BP 1001 EP 1002 DI 10.1080/14737140.2016.1224182 PG 2 WC Oncology SC Oncology GA DY8FZ UT WOS:000385365600002 PM 27553020 ER PT S AU Fields, BC Kocis, SM Williams, KL Karpenko, M AF Fields, Brian C. Kocis, Shawn M. Williams, Kerri L. Karpenko, Mark BE Chart, DA TI HARDWARE-IN-THE-LOOP SIMULATOR FOR RAPID PROTOTYPING OF CMG-BASED ATTITUDE CONTROL SYSTEMS SO GUIDANCE, NAVIGATION, AND CONTROL 2016 SE Advances in the Astronautical Sciences LA English DT Proceedings Paper CT 39th Annual American-Astronautical-Society Rocky Mountain Section Guidance, Navigation and Control Conference CY FEB 05-10, 2016 CL Breckenridge, CO SP Amer Astronaut Soc ID SPACECRAFT AB Control moment gyroscopes (CMGs) are the actuators of choice for agile spacecraft. While they are remarkably capable torquers, attitude control using CMGs is challenging since gimbal commands must be properly allocated in order to avoid control singularities in the momentum space. Heritage systems typically cannot utilize the full capability of a CMG array and are therefore operated within only a small region of the momentum envelope. The range of operation of CMG systems can, however, be extended through the development and implementation of new steering concepts to avoid singular states. To transition these new algorithms to practice, extensive simulation and ground testing is necessary. This paper describes a hardware-in-the-loop (HI) simulator for rapid prototyping of CMG attitude control laws that has been developed by students at the Naval Postgraduate School. The HIL testbed is aimed at providing students and other researchers a platform for developing and testing new ideas for agile control of CMG spacecraft in a hardware-based laboratory environment. The results of several Hit experiments are presented to illustrate the functionality of the testbed, which allows real CMG hardware to be exercised against a numerical simulation of a spacecraft. C1 [Fields, Brian C.; Kocis, Shawn M.; Williams, Kerri L.] Naval Postgrad Sch, Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. [Karpenko, Mark] Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. RP Karpenko, M (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd, Monterey, CA 93943 USA. EM mkarpenk@nps.edu NR 27 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 978-0-87703-631-9 J9 ADV ASTRONAUT SCI PY 2016 VL 157 BP 43 EP 56 PG 14 WC Automation & Control Systems; Engineering, Aerospace SC Automation & Control Systems; Engineering GA BF9WA UT WOS:000385997100004 ER PT J AU Miakonkana, GVM Nguelifack, BM Abebe, A AF Miakonkana, Guy-vanie M. Nguelifack, Brice M. Abebe, Asheber TI Rank-based group variable selection SO JOURNAL OF NONPARAMETRIC STATISTICS LA English DT Article DE nonparametric; oracle property; penalised regression; robust linear model ID REGRESSION; REGULARIZATION; LASSO AB A robust rank-based estimator for variable selection in linear models, with grouped predictors, is studied. The proposed estimation procedure extends the existing rank-based variable selection [Johnson, B. A., and Peng, L. (2008), 'Rank-based Variable Selection', Journal of Nonparametric Statistics, 20(3): 241-252] and the ww-scad [Wang, L., and Li, R. (2009), 'Weighted Wilcoxon-type Smoothly Clipped Absolute Deviation Method', Biometrics, 65(2): 564-571] to linear regression models with grouped variables. The resulting estimator is robust to contamination or deviations in both the response and the design space. The Oracle property and asymptotic normality of the estimator are established under some regularity conditions. Simulation studies reveal that the proposed method performs better than the existing rank-based methods [Johnson, B. A., and Peng, L. (2008), 'Rank-based Variable Selection', Journal of Nonparametric Statistics, 20(3): 241-252; Wang, L., and Li, R. (2009), 'Weighted Wilcoxon-type Smoothly Clipped Absolute Deviation Method', Biometrics, 65(2): 564-571] for grouped variables models. This estimation procedure also outperforms the adaptive hlasso [Zhou, N., and Zhu, J. (2010), 'Group Variable Selection Via a Hierarchical Lasso and its Oracle Property', Interface, 3(4): 557-574] in the presence of local contamination in the design space or for heavy-tailed error distribution. C1 [Miakonkana, Guy-vanie M.] Travelers, One Tower Sq Plaza Bldg, Hartford, CT USA. [Nguelifack, Brice M.] US Naval Acad, Dept Math, Annapolis, MD 21402 USA. [Abebe, Asheber] Auburn Univ, Dept Math & Stat, Auburn, AL 36849 USA. RP Nguelifack, BM (reprint author), US Naval Acad, Dept Math, Annapolis, MD 21402 USA. EM nguelifa@usna.edu RI Abebe, Ash/C-3681-2014 OI Abebe, Ash/0000-0001-5759-2383 FU NSF [DMS-1343651] FX The last author gratefully acknowledges support from the NSF under grant number DMS-1343651. NR 13 TC 0 Z9 0 U1 1 U2 1 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND SN 1048-5252 EI 1029-0311 J9 J NONPARAMETR STAT JI J. Nonparametr. Stat. PY 2016 VL 28 IS 3 BP 550 EP 562 DI 10.1080/10485252.2016.1190842 PG 13 WC Statistics & Probability SC Mathematics GA DZ5YM UT WOS:000385938200006 ER PT S AU Kim, AM Olsen, RC Beland, M AF Kim, Angela M. Olsen, Richard C. Beland, Martin BE Turner, MD Kamerman, GW TI Simulated full-waveform LiDAR compared to Riegl VZ-400 terrestrial laser scans SO LASER RADAR TECHNOLOGY AND APPLICATIONS XXI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser Radar Technology and Applications XXI CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE LiDAR; Monte Carlo; ray tracing; VoxLAD; simulation; small footprint; full-waveform ID LEAF-AREA DISTRIBUTION AB A 3-D Monte Carlo ray-tracing simulation of LiDAR propagation models the reflection, transmission and ab- sorption interactions of laser energy with materials in a simulated scene. In this presentation, a model scene consisting of a single Victorian Boxwood (Pittosporum undulatum) tree is generated by the high-fidelity tree voxel model VoxLAD using high-spatial resolution point cloud data from a Riegl VZ-400 terrestrial laser scanner. The VoxLAD model uses terrestrial LiDAR scanner data to determine Leaf Area Density (LAD) measurements for small volume voxels (20 cm sides) of a single tree canopy. VoxLAD is also used in a non-traditional fashion in this case to generate a voxel model of wood density. Information from the VoxLAD model is used within the LiDAR simulation to determine the probability of LiDAR energy interacting with materials at a given voxel location. The LiDAR simulation is defined to replicate the scanning arrangement of the Riegl VZ-400; the resulting simulated full-waveform LiDAR signals compare favorably to those obtained with the Riegl VZ-400 terrestrial laser scanner C1 [Kim, Angela M.; Olsen, Richard C.] Naval Postgrad Sch, Ctr Remote Sensing, 833 Dyer Rd, Monterey, CA 93943 USA. [Kim, Angela M.; Olsen, Richard C.] Naval Postgrad Sch, Dept Phys, 833 Dyer Rd, Monterey, CA 93943 USA. [Beland, Martin] Univ Laval, Dept Geomat Sci, 2325 Rue Univ, Quebec City, PQ, Canada. RP Kim, AM (reprint author), Naval Postgrad Sch, Ctr Remote Sensing, 833 Dyer Rd, Monterey, CA 93943 USA.; Kim, AM (reprint author), Naval Postgrad Sch, Dept Phys, 833 Dyer Rd, Monterey, CA 93943 USA. EM amkim@nps.edu NR 9 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0073-7 J9 PROC SPIE PY 2016 VL 9832 AR UNSP 98320T DI 10.1117/12.2223929 PG 14 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF9PW UT WOS:000385794300021 ER PT S AU Kim, AM Kruse, FA Olsen, RC AF Kim, Angela M. Kruse, Fred A. Olsen, Richard C. BE Turner, MD Kamerman, GW TI Integrated analysis of Light Detection and Ranging (LiDAR) and Hyperspectral Imagery (HSI) data SO LASER RADAR TECHNOLOGY AND APPLICATIONS XXI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser Radar Technology and Applications XXI CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE LiDAR; Hyperspectral; HSI; Raster Fusion; Point Cloud Fusion AB LiDAR and hyperspectral data provide rich and complementary information about the content of a scene. In this work, we examine methods of data fusion, with the goal of minimizing information loss due to point-cloud rasterization and spatial-spectral resampling. Two approaches are investigated and compared: 1) a point-cloud approach in which spectral indices such as Normalized Difference Vegetation Index (NDVI) and principal components of the hyperspectral image are calculated and appended as attributes to each LiDAR point falling within the spatial extent of the pixel, and a supervised machine learning approach is used to classify the resulting fused point cloud; and 2) a raster-based approach in which LiDAR raster products (DEMs, DSMs, slope, height, aspect, etc) are created and appended to the hyperspectral image cube, and traditional spectral classification techniques are then used to classify the fused image cube. The methods are compared in terms of classification accuracy. LiDAR data and associated orthophotos of the NPS campus collected during 2012 - 2014 and hyperspectral Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) data collected during 2011 are used for this work C1 [Kim, Angela M.] Naval Postgrad Sch, Ctr Remote Sensing, 833 Dyer Rd, Monterey, CA 93943 USA. Naval Postgrad Sch, Dept Phys, 833 Dyer Rd, Monterey, CA USA. RP Kim, AM (reprint author), Naval Postgrad Sch, Ctr Remote Sensing, 833 Dyer Rd, Monterey, CA 93943 USA. EM amkim@nps.edu 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 978-1-5106-0073-7 J9 PROC SPIE PY 2016 VL 9832 AR UNSP 98320W DI 10.1117/12.2223041 PG 15 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF9PW UT WOS:000385794300023 ER PT S AU Miller, CI Thomas, JJ Kim, AM Metcalf, JP Olsen, RC AF Miller, Chad I. Thomas, Judson J. Kim, Angela M. Metcalf, Jeremy P. Olsen, Richard C. BE Turner, MD Kamerman, GW TI Application of image classification techniques to multispectral lidar point cloud data SO LASER RADAR TECHNOLOGY AND APPLICATIONS XXI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser Radar Technology and Applications XXI CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE lidar; image classification; multispectral lidar; point cloud AB Data from Optech Titan are analyzed here for purposes of terrain classification, adding the spectral data component to the lidar point cloud analysis. Nearest-neighbor sorting techniques are used to create the merged point cloud from the three channels. The merged point cloud is analyzed using spectral analysis techniques that allow for the exploitation of color, derived spectral products (pseudo-NDVI), as well as lidar features such as height values, and return number. Standard spectral image classification techniques are used to train a classifier, and analysis was done with a Maximum Likelihood supervised classification. Terrain classification results show an overall accuracy improvement of 10% and a kappa coefficient increase of 0.07 over a raster-based approach. C1 [Miller, Chad I.; Thomas, Judson J.; Kim, Angela M.; Metcalf, Jeremy P.; Olsen, Richard C.] SAIC, 1710 SAIC Dr, Mclean, VA 22102 USA. [Miller, Chad I.; Thomas, Judson J.; Kim, Angela M.; Metcalf, Jeremy P.; Olsen, Richard C.] Naval Postgrad Sch, 833 Dyer Rd, Monterey, CA 93943 USA. RP Miller, CI (reprint author), SAIC, 1710 SAIC Dr, Mclean, VA 22102 USA.; Miller, CI (reprint author), Naval Postgrad Sch, 833 Dyer Rd, Monterey, CA 93943 USA. EM cimiller1@nps.edu NR 11 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 978-1-5106-0073-7 J9 PROC SPIE PY 2016 VL 9832 AR UNSP 98320X DI 10.1117/12.2223257 PG 12 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF9PW UT WOS:000385794300024 ER PT S AU Kendziora, CA Furstenberg, R Papantonakis, M Nguyen, V McGill, RA AF Kendziora, Christopher A. Furstenberg, Robert Papantonakis, Michael Nguyen, Viet McGill, R. Andrew BE George, T Dutta, AK Islam, MS TI Broadband infrared imaging spectroscopy for standoff detection of trace explosives SO MICRO- AND NANOTECHNOLOGY SENSORS, SYSTEMS, AND APPLICATIONS VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Micro- and Nanotechnology Sensors, Systems, and Applications VIII CY APR 17-21, 2016 CL Baltimore, MD SP SPIE DE explosives; standoff detection; infrared; QCL; imaging; focal plane array; photothermal AB This manuscript describes advancements toward a mobile platform for standoff detection of trace explosives on relevant substrates using broadband infrared spectroscopic imaging. In conjunction with this, we are developing a technology for detection based on photo-thermal infrared (IR) imaging spectroscopy (PT-IRIS). PT-IRIS leverages one or more IR quantum cascade lasers (QCL), 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 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. Here we describe methods to increase both sensitivity to trace explosives and selectivity between different analyte types by exploiting a broader spectral range than in previous configurations. Previously we demonstrated PT-IRIS at several meters of standoff distance indoors and in field tests, while operating the lasers below the infrared eye-safe intensity limit (100 mW/cm(2)). Sensitivity to explosive traces as small as a single 10 mu m diameter particle (similar to 1 ng) has been demonstrated. C1 [Kendziora, Christopher A.; Furstenberg, Robert; Papantonakis, Michael; Nguyen, Viet; McGill, R. Andrew] Naval Res Lab, Code 6365,4555 Overlook Ave SW, Washington, DC 20375 USA. RP Kendziora, CA (reprint author), Naval Res Lab, Code 6365,4555 Overlook Ave SW, Washington, DC 20375 USA. EM chris.kendziora@nrl.navy.mil NR 18 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 978-1-5106-0077-5 J9 PROC SPIE PY 2016 VL 9836 AR UNSP 98362G DI 10.1117/12.2224049 PG 10 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Optics; Physics, Applied SC Engineering; Science & Technology - Other Topics; Optics; Physics GA BF9OX UT WOS:000385791900049 ER PT S AU Restaino, SR Armstrong, JT Baines, EK Schmitt, HR Clark, JH AF Restaino, Sergio R. Armstrong, J. Thomas Baines, Ellyn K. Schmitt, Henrique R. Clark, James H., III BE George, T Dutta, AK Islam, MS TI Using Optical Interferometry for GEO satellites imaging: an update SO MICRO- AND NANOTECHNOLOGY SENSORS, SYSTEMS, AND APPLICATIONS VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Micro- and Nanotechnology Sensors, Systems, and Applications VIII CY APR 17-21, 2016 CL Baltimore, MD SP SPIE DE geostationary satellites; optical interferometry; imaging; telescope arrays AB We describe multi -baseline observations of a geostationary satellite using the Navy Precision Optical Interferometer (NPOI) during the glint season of March 2015. We succeeded in detecting DirecTV-7S with an interferometer baseline length of 8.8 m on two nights, with a brief simultaneous detection at 9.8 m baseline length on the second night. These baseline lengths correspond to a resolution of similar to 4 m at geostationary altitude. This is the first multiple -baseline interferometric detection of a satellite. C1 [Restaino, Sergio R.; Armstrong, J. Thomas; Baines, Ellyn K.; Schmitt, Henrique R.; Clark, James H., III] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. RP Restaino, SR (reprint author), Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0077-5 J9 PROC SPIE PY 2016 VL 9836 AR UNSP 983603 DI 10.1117/12.2224750 PG 8 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Optics; Physics, Applied SC Engineering; Science & Technology - Other Topics; Optics; Physics GA BF9OX UT WOS:000385791900003 ER PT J AU Smith, AF Harvey, SM Skrabalak, SE Weiner, RG AF Smith, Alison F. Harvey, Samantha M. Skrabalak, Sara E. Weiner, Rebecca G. TI Engineering high refractive index sensitivity through the internal and external composition of bimetallic nanocrystals SO NANOSCALE LA English DT Article ID SURFACE-PLASMON RESONANCE; CHEMICAL-STABILITY; OPTICAL-CONSTANTS; CO-REDUCTION; NANOSTRUCTURES; NANOPARTICLES; SHAPE; SIZE; GOLD; AG AB High refractive index sensitivity (RIS) of branched Au-Pd nanocrystals (NCs) is engineered through lowering the dielectric dispersion at the NC resonant wavelength with internal or external atomic % Pd. To our knowledge, these NCs display the highest ensemble RIS measurement for colloids with LSPR maximum band positions <= 900 nm, and these results are corroborated with FDTD computations. C1 [Smith, Alison F.; Harvey, Samantha M.; Skrabalak, Sara E.; Weiner, Rebecca G.] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA. [Smith, Alison F.] NAVSEA Crane, Crane, IN 47522 USA. RP Skrabalak, SE; Weiner, RG (reprint author), Indiana Univ, Dept Chem, Bloomington, IN 47405 USA. EM sskrabal@indiana.edu; rgweiner@indiana.edu FU NSWC; Siedle Inorganic Fellowship FX The authors acknowledge the U.S. National Science Foundation (CHE-1306853 and CHE-1602476), Alice Hui, and Dr Kallum Koczkur. SES is a Cottrell Scholar, Alfred P. Sloan Fellow, and Camille Dreyfus Teacher-Scholar. AFS and RGW acknowledge a NSWC Crane PhD Fellowship and the Siedle Inorganic Fellowship, respectively. NR 22 TC 1 Z9 1 U1 4 U2 4 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2040-3364 EI 2040-3372 J9 NANOSCALE JI Nanoscale PY 2016 VL 8 IS 38 BP 16841 EP 16845 DI 10.1039/c6nr04085c PG 5 WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA DY8MA UT WOS:000385383100003 PM 27345192 ER PT B AU Abdi, F DorMohammadi, S Ahmad, J Godines, C Morscher, GN Choi, S Mansour, R Gonczy, S AF Abdi, Frank DorMohammadi, Saber Ahmad, Jalees Godines, Cody Morscher, Gregory N. Choi, Sung Mansour, Rabih Gonczy, Steve GP ASME TI OPTIMIZING CERAMIC MATRIX COMPOSITE INTERLAMINAR FRACTURE TOUGHNESS (MODE I) WEDGE TEST SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2016, VOL 6 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 13-17, 2016 CL Seoul, SOUTH KOREA SP Int Gas Turbine Inst DE Interlaminar Crack Growth Resistance; Wedge Test Methods; Ceramic Matrix Composites (CMC); Mode I fracture toughness; effect of As-built/As-is structural simulation; Multi-scale Progressive Failure Analysis (MS-PFA); Cohesive type failure ID INPLANE MECHANICAL-PROPERTIES AB ASTM test standards for CMC's Crack Growth Resistance (CGR) may exhibit a zig-zag (wavy) crack path pattern, and fiber bridging. The experimental parameters that may contribute to the difficulty can be summarized as: specimen width and thickness, interface coating thickness, mixed mode failure evolution, and interlaminar defects. Modes I crack growth resistances, G(1) were analytically determined at ambient temperature using wedge test, a modified double cantilever beam (DCB). Several Finite Element (FE) based Multi-scale modeling potential techniques were investigated: a) Multi-scale progressive failure analysis (MS-PFA); b) Virtual Crack Closure Technique (VCCT). Advantages and disadvantages of each were identified. The final modeling algorithm recommended was an integrated damage and fracture evolution methodology using combined MS-PFA and VCCT. The material tested in this study was a slurry-cast melt infiltrated SiC/SiC composite with Tyranno ZMI fibers (Ube Industries, Kyoto, Japan) and a BN interphase. The fiber architecture consisted of eight plies of balanced 2-D woven five-harness satin. The total fiber volume fraction was about 30% with half of the fibers in the 0 degrees direction and half in the 90 direction. All specimens had a nominal thickness of 4 mm. An alumina wedge with 18 degrees head angle (2 alpha) was used. In this method, a splitting force is created by inserting a vertically moving wedge in a notch causing the arms to separate and forcing an interlaminar crack at the sharpest end of the notch The MS-PFA numerical model predicted the damage and fracture evolution and utilized the GENOA UMAT (User Material Subroutine) for Damage and FEM (Finite Element Model) stress intensity and LEFM (Linear elastic Fracture Model), Cohesive Model for Fracture. The analysis results (Fracture energy vs. crack length, Fracture energy vs. load, Fracture energy vs. crack opening displacement) matched the Mode I coupon tests and revealed the following key findings. Mode I-Wedge specimen exhibits: 1) failure mode is due to interlaminar tension (ILT) only in the interface section and a zig-zag pattern observed; 2) VCCT crack growth resistance is well matched to the test data; and 3) failure mode is a mixed mode behavior of Interlaminar tension (ILT) to interlaminar shear (ILS). The final Wedge test specimen configuration optimization includes the sensitivity of design parameters to CGR: a) wedge contact coefficient of friction; b) lever arms thickness, and c) inclined head angle, distance between the initial crack and wedge tip. C1 [Abdi, Frank; DorMohammadi, Saber; Ahmad, Jalees; Godines, Cody] AlphaSTAR Corp, Long Beach, CA 90804 USA. [Morscher, Gregory N.; Mansour, Rabih] Univ Akron, Akron, OH 44325 USA. [Choi, Sung] NAVAIR, Patuxent River, MD USA. [Gonczy, Steve] Gateway Mat, Mt Prospect, IL USA. RP Abdi, F (reprint author), AlphaSTAR Corp, Long Beach, CA 90804 USA. NR 11 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4982-8 PY 2016 AR UNSP V006T02A006 PG 16 WC Education, Scientific Disciplines; Engineering, Mechanical; Materials Science, Multidisciplinary SC Education & Educational Research; Engineering; Materials Science GA BF9CU UT WOS:000385459200006 ER PT B AU Abdi, F Godines, C Morscher, GN Choi, S Montero, MV Han, ZP Presby, M AF Abdi, Frank Godines, Cody Morscher, Gregory N. Choi, Sung Montero, Marc Villa Han, Zipeng Presby, Michael GP ASME TI FOREIGN OBJECT DAMAGE AND FATIGUE AFTER IMPACT SIMULATIONS ON FLAT AND CURVED HI NICALON AND HI NICALON TYPE S (MI SIC) SPECIMENS AT ROOM AND 1200 degrees C USING BUILDING BLOCK APPROACH SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2016, VOL 6 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 13-17, 2016 CL Seoul, SOUTH KOREA SP Int Gas Turbine Inst DE CMC SiC/SiC (Hi-Nicalon; Hi-Nicalon Type S); Material Characterization and Qualification (MCQ software); Foreign Object Damage (FOD); Fatigue after FOD; Building Block Validation; Multi-Scale Progressive Failure Analysis Damage and Fracture Evolution; Effect of Defects; Nondestructive Evaluation ID COMPOSITE AB SiC-based ceramic matrix composites (CMC) in turbine engine applications must sustain fatigue residual life after foreign object impacts that might occur in services. Experiments, nondestructive evaluations (NDE), and simulations have illustrated good correlations between impact energy and foreign object damage (FOD) and fatigue life after impact at room and 1200 degrees C temperatures. Flat and curved five-harness satin (5HS) woven CMCs specimens, consisting of Hi-Nicalon Type S (Goodrich) and Hi-Nicalon (Rolls Royce) in MI SiC matrix, were tested and simulated. Tests measured electrical resistivity (ER), acoustic emission (AE), and microscopy. Simulations used a building block validation strategy and the Multi-Scale Progressive Failure Analysis (MS-PFA) method. Simulations complemented experiments in understanding and predicting the damage states, of impact, and fatigue residual strength after impact of CMCs to form a more complete understanding of the damage mechanisms involved in such events. The GENOA software developed by Alpha STAR Corporation [1, 2, 3] is capable of Durability and Damage Tolerance (D&DT), life, and reliability predictions by means of multi-scale progressive failure analysis (damage and fracture evolution). In general, CMCs are modeled using effective fiber, matrix, and interface constitutive behaviors, from which the lamina stiffness, strengths, and the strain rate effect can be derived. Similarly, the fatigue strength and stiffness degradation, and the effect of defects in a matrix micro crack density, voids, as well as fibers waviness, and damages after impact can be characterized. The final simulation is static loading and impact on a generic CMC SiC/SiC (Sylramic MI 5HS) blade which is to be used in future blade optimization based on minimizing damage incurred. The GENOA software platform supports FAA recommended ASTM standard Building-Block Validation Strategy with reduced tests conducting: 1) Material Calibration and Qualification, and 2) FEM Verification, Validation, and 3) Blind Predictions (Accreditation). The simulation and test comparisons performed included the damage size for both the CMC (fracture) and the steel impactor (plastic deformation), rebound velocities, SN curves for fatigue of pristine and impacted specimens at room and high temperatures. All simulations showed good correlation. The MS-PFA tool demonstrated a great potential for CMC post FOD fatigue life for part certification supported with reduced tests. C1 [Abdi, Frank; Godines, Cody; Montero, Marc Villa] Alpha STAR Corp, Long Beach, CA 90804 USA. [Morscher, Gregory N.; Han, Zipeng; Presby, Michael] Univ Akron, Akron, OH 44325 USA. [Choi, Sung] NAVAIR, Patuxent River, MD USA. RP Abdi, F (reprint author), Alpha STAR Corp, Long Beach, CA 90804 USA. NR 13 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4982-8 PY 2016 AR UNSP V006T02A007 PG 10 WC Education, Scientific Disciplines; Engineering, Mechanical; Materials Science, Multidisciplinary SC Education & Educational Research; Engineering; Materials Science GA BF9CU UT WOS:000385459200007 ER PT B AU Han, ZP Morscher, GN Maillet, E Kannan, M Choi, SR Abdi, F AF Han, Zipeng Morscher, Gregory N. Maillet, Emmanuel Kannan, Manigandan Choi, Sung R. Abdi, Frank GP ASME TI ELECTRICAL RESISTANCE AND ACOUSTIC EMISSION DURING FATIGUE TESTING OF PRISTINE AND HIGH VELOCITY IMPACT SIC/SIC COMPOSITES AT ROOM AND ELEVATED TEMPERATURE SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2016, VOL 6 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 13-17, 2016 CL Seoul, SOUTH KOREA SP Int Gas Turbine Inst ID CERAMIC-MATRIX COMPOSITES; BEHAVIOR AB Electrical resistance (ER) is a relatively new approach for real-time monitoring and evaluating damage in SiC/SiC composites for a variety of loading conditions. In this study, ER of woven silicon carbide fiber-reinforced silicon carbide composite systems in their pristine and impacted state were measured under cyclic loading conditions at room and high temperature (1200C). In addition, modal acoustic emission (AE) was also monitored, which can reveal the occasion of matrix cracks and fiber. ER measurement and AE technique are shown in this study to be useful methods to monitor damage and indicate the failure under cyclic loading. Based on the slope of the ER evolution, an initial attempt has been made to develop a method allowing a critical damage phase to be identified. While the physical meaning of the critical point is not yet clear, it has the potential to allow the failure to be indicated at its early stage. C1 [Han, Zipeng; Morscher, Gregory N.; Kannan, Manigandan] Univ Akron, Akron, OH 44325 USA. [Maillet, Emmanuel] GE Global Res, Niskayuna, NY USA. [Choi, Sung R.] Naval Air Syst Command, Patuxent River, MD USA. [Abdi, Frank] AlphaSTAR Corp, Long Beach, CA USA. RP Han, ZP (reprint author), Univ Akron, Akron, OH 44325 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 978-0-7918-4982-8 PY 2016 AR UNSP V006T02A002 PG 7 WC Education, Scientific Disciplines; Engineering, Mechanical; Materials Science, Multidisciplinary SC Education & Educational Research; Engineering; Materials Science GA BF9CU UT WOS:000385459200002 ER PT B AU Kedir, N Faucett, D Sanchez, L Choi, SR AF Kedir, Nesredin Faucett, David Sanchez, Luis Choi, Sung R. GP ASME TI FOREIGN OBJECT DAMAGE IN AN OXIDE/OXIDE CERAMIC MATRIX COMPOSITE (CMC) UNDER PRESCRIBED TENSILE LOADING SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2016, VOL 6 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 13-17, 2016 CL Seoul, SOUTH KOREA SP Int Gas Turbine Inst DE Foreign object damage (FOD); impact damage; ballistic projectile impact; ceramic matrix composite (CMC); N720/alumina CMC; mechanical properties; prediction of post-impact strength ID SIC/SIC COMPOSITE; FIBER COMPOSITES; PROJECTILES; BEHAVIOR; PERFORMANCE; STEELS AB Foreign object damage (FOD) behavior of an N720/alumina oxide/oxide ceramic matrix composite (CMC) was characterized at ambient temperature by using spherical projectiles impacted at velocities ranging from 100 to 350 m/s. The CMC targets were subject to ballistic impact at a normal incidence angle while being loaded under different levels of tensile loading in order to simulate conditions of rotating aeroengine airfoils. The impact damage of frontal and back surfaces was assessed with respect to impact velocity and load factor. Subsequent post-impact residual strength was also estimated to determine quantitatively the severity of impact damage. Impact force was predicted based on the principles of energy conservation. C1 [Kedir, Nesredin; Faucett, David; Sanchez, Luis; 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 27 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4982-8 PY 2016 AR UNSP V006T02A005 PG 11 WC Education, Scientific Disciplines; Engineering, Mechanical; Materials Science, Multidisciplinary SC Education & Educational Research; Engineering; Materials Science GA BF9CU UT WOS:000385459200005 ER PT B AU Vick, M Young, T Kelly, M Tuttle, S Hinnant, K AF Vick, Michael Young, Trent Kelly, Matthew Tuttle, Steven Hinnant, Katherine GP ASME TI A SIMPLE RECUPERATED CERAMIC MICROTURBINE: DESIGN CONCEPT, CYCLE ANALYSIS, AND RECUPERATOR COMPONENT PROTOTYPE TESTS SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2016, VOL 8 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 13-17, 2016 CL Seoul, SOUTH KOREA SP Int Gas Turbine Inst AB Ceramic recuperators could enable microturbines to achieve higher fuel efficiency and specific power. Challenges include finding a suitable ceramic fabrication process, minimizing stray heat transfer and gas leakage, mitigating thermal stress, and joining the ceramic parts to neighboring metal components. This paper describes engine and recuperator design concepts intended to address these obstacles. The engine is sized to produce twelve kilowatts of shaft power, and it has a reverse-flow compressor and turbine. Motivations for this layout are to balance axial thrust forces on the rotor assembly; to minimize gas leakage along the rotating shaft; to reduce heat transfer to the compressor diffuser; to enable the use of a simple, single-can combustor; and to provide room for lightweight ceramic insulation surrounding all hot section components. The recuperator is an annular, radial counterflow heat exchanger with the can combustor at the center. It is assembled from segmented wafers made by ceramic injection molding (CIM). These are housed in a pressure vessel to load the walls mainly in compression, and are joined together by flexible adhesives in the cool areas to accommodate thermal expansion. A representative wafer stack was built by laser cutting, laminating, and sintering tapecast ceramic material. The prototype was tested at temperatures up to 675 degrees C, and the results were used to validate analytical and computational fluid dynamics (CFD) models, which were then used to estimate the effectiveness of the actual design. Turbomachinery efficiencies were also calculated using CFD, and allowances were made for additional losses like bearing friction and gas leakage. Based on these component performance estimates, a cycle model indicates the engine could achieve a net fuel-to-electrical efficiency of 21%, at a core weight including the recuperator of 11 kg, or about 1 kg/kW electric output. C1 [Vick, Michael; Young, Trent; Kelly, Matthew] US Naval Res Lab, Vehicle Res Sect, Code 5712, Washington, DC 20375 USA. [Tuttle, Steven; Hinnant, Katherine] US Naval Res Lab, Combust Dynam, Code 6185, Washington, DC 20375 USA. RP Vick, M (reprint author), US Naval Res Lab, Vehicle Res Sect, Code 5712, Washington, DC 20375 USA. EM michael.vick@nrl.navy.mil; steven.tuttle@nrl.navy.mil NR 39 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4986-6 PY 2016 AR UNSP V008T23A030 PG 14 WC Engineering, Mechanical SC Engineering GA BF9DA UT WOS:000385467300030 ER PT J AU Tang, YX Gao, HX Imler, GH Parrish, DA Shreeve, JM AF Tang, Yongxing Gao, Haixiang Imler, Gregory H. Parrish, Damon A. Shreeve, Jean'ne M. TI Energetic dinitromethyl group functionalized azofurazan and its azofurazanates SO RSC ADVANCES LA English DT Article ID POSITIVE OXYGEN BALANCE; SALTS; 1,2,4-OXADIAZOLE; SENSITIVITY; DERIVATIVES; NITROAZOLES; MONO AB Incorporating explosophore groups such as nitro, dinitromethyl, and azo into furazan results in potential candidates for energetic materials applications. In this study, 3,3'-azofurazan was functionalized with fluorodinitromethyl (2) and dinitromethyl (3) moieties by fluorination and acidification of potassium 4,4'-bis(dinitromethyl)-3,3'-azofurazanate (1), respectively. In addition, 3 was converted to its ammonium (4), hydrazinium (5) and hydroxylammonium (7) salts. All the compounds were fully characterized by multinuclear NMR and IR spectra, and elemental analysis. Compounds 2 and 3 are further supported by X-ray crystallographic analysis. Electronic structures were also studied. In addition, physicochemical properties, such as thermal stability, density, and sensitivity were measured, and energetic properties (e.g., detonation velocities and detonation pressures) were calculated using EXPLO5 code. C1 [Tang, Yongxing; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID USA. [Gao, Haixiang] China Agr Univ, Dept Appl Chem, Beijing 100193, Peoples R China. [Imler, Gregory H.; Parrish, Damon A.] US Navy, Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA. RP Shreeve, JM (reprint author), Univ Idaho, Dept Chem, Moscow, ID USA. EM hxgao@cau.edu.cn; jshreeve@uidaho.edu FU Office of Naval Research [N00014-16-1-2089]; Defense Threat Reduction Agency [HDTRA 1-15-1-0028]; Murdock Charitable Trust; Bruker AVANCE 500 nuclear magnetic resonance spectrometer FX This work was supported by the Office of Naval Research (N00014-16-1-2089) and the Defense Threat Reduction Agency (HDTRA 1-15-1-0028). We are grateful to the Murdock Charitable Trust for funding the Bruker AVANCE 500 nuclear magnetic resonance spectrometer. NR 43 TC 0 Z9 0 U1 2 U2 2 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 2046-2069 J9 RSC ADV JI RSC Adv. PY 2016 VL 6 IS 94 BP 91477 EP 91482 DI 10.1039/c6ra22007j PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA DY8GO UT WOS:000385367300049 ER PT J AU Doyle, HM Tom, JG Nogacek, KH Anderson, CR Kang, JS AF Doyle, Haley M. Tom, Joseph G. Nogacek, Kari H. Anderson, Chris R. Kang, Jin S. TI Design and Development of DRAGONS In-situ Orbital Debris Detection and Characterization Payload SO TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES LA English DT Article; Proceedings Paper CT 30th International Symposium on Space Technology and Science CY JUL 04-10, 2015 CL Kobe, JAPAN DE NASA; Orbital Debris; MMOD; Sensor; Resistive Grid AB Orbital debris poses a constant threat to satellites. Some larger debris can be tracked and avoided, but smaller objects cannot be tracked. In addition, there exists a data gap in orbital debris dispersion models for particles less than 5 mm in diameter. The Debris Resistive/Acoustic Grid Orbital Navy Sensor (DRAGONS) fills this critical gap in debris monitoring capability. DRAGONS is a sensor system developed by the U.S. Naval Academy and NASA. Consisting of multiple sensor layers, the sensor is capable of providing size, velocity, angle of incidence, and density information of the impacting micrometeoroid and orbital debris. DRAGONS will provide real-time monitoring of orbital debris of small sizes, and will be deployed on the outside of the International Space Station in 2016 for in-situ characterization of debris flux, resulting in improved risk assessment and situation awareness. DRAGONS has been developed and tested for functionality. However, some concerns were raised in regards to its sensitivity to the possible damage that may occur due to environmental loading. The paper provides an overview of the design of the sensor grid, and discusses test results for thermal and vibration loading, as well as potential secondary damage from the force of particle impact. C1 [Doyle, Haley M.; Tom, Joseph G.; Nogacek, Kari H.; Anderson, Chris R.; Kang, Jin S.] US Naval Acad, Annapolis, MD 21402 USA. RP Kang, JS (reprint author), US Naval Acad, Annapolis, MD 21402 USA. EM kang@usna.edu NR 8 TC 0 Z9 0 U1 0 U2 0 PU JAPAN SOC AERONAUT SPACE SCI PI TOKYO PA KOKUKAIKAN-BUNKAN 1-18-2 SHINBASHI MINATO-KU, TOKYO, JAPAN SN 0549-3811 J9 T JPN SOC AERONAUT S JI Trans. Jpn. Soc. Aeronaut. Space Sci. PY 2016 VL 59 IS 4 BP 218 EP 225 PG 8 WC Engineering, Aerospace SC Engineering GA DZ4YU UT WOS:000385869000003 ER PT J AU Eberle, C AF Eberle, Christopher TI RELIGION, RESPECT AND WAR: AGAINST THE CANONICAL VISION OF RELIGION IN POLITICS SO ETICA & POLITICA LA Italian DT Article DE Religious reasons; secular reasons; justified coercion; respect; war ID RESTRAINT AB The last several decades have witnessed a vibrant discussion about the proper political role of religion in pluralistic liberal democracies. An important part of that discussion has been a dispute about the role that religious and secular reasons properly play in the justification of state coercion. As I understand it, the standard view advocated by the members of that pantheon, and by many others as well, includes the following two claims, namely, that religious reasons cannot play a decisive role in justifying state coercion and that citizens and public officials in a liberal polity should not endorse state coercion that requires decisive religious support. I am skeptical about the standard view's restrictions on religious reasons as a class - restrictions that apply to any and all religious considerations, to religious reasons as such. My main aim in this paper is to motivate skepticism regarding the standard view. I will try to achieve this aim by reflecting on what I take to be the paradigmatic case of state coercion, namely, the use of military violence in war. C1 [Eberle, Christopher] US Naval Acad, Dept Leadership Eth & Law, Annapolis, MD 21402 USA. RP Eberle, C (reprint author), US Naval Acad, Dept Leadership Eth & Law, Annapolis, MD 21402 USA. EM eberle@usna.edu NR 24 TC 0 Z9 0 U1 0 U2 0 PU UNIV STUDI TRIESTE, EDIZIONI UNIVERSITA TRIESTE-EUT PI TRIESTE PA VIA EDOARDO WEISS 21, TRIESTE, 34128, ITALY SN 1825-5167 J9 ETICA POLITICA JI Etica Politica PY 2016 VL 18 IS 1 BP 11 EP 33 PG 23 WC Philosophy SC Philosophy GA DY1WH UT WOS:000384884600002 ER PT B AU Cernan, EA AF Cernan, Eugene A. BA Burgess, C Doolan, K BF Burgess, C Doolan, K TI Fallen Astronauts Heroes Who Died Reaching for the Moon REVISED EDITION Foreword SO FALLEN ASTRONAUTS: HEROES WHO DIED REACHING FOR THE MOON SE Outward Odyssey-A Peoples History of Spaceflight LA English DT Editorial Material; Book Chapter C1 [Cernan, Eugene A.] US Navy, Washington, DC 20374 USA. RP Cernan, EA (reprint author), US Navy, Washington, DC 20374 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIV NEBRASKA PRESS PI LINCOLN PA 1111 LINCOLN MALL, LINCOLN, NE 68588-0630 USA BN 978-0-8032-8599-6; 978-0-8032-8509-5 J9 OUTW ODYSS PEOPLES PY 2016 BP XV EP XVII PG 3 WC History & Philosophy Of Science SC History & Philosophy of Science GA BF7WD UT WOS:000384525800001 ER PT B AU Grissom, VI White, EH Chaffee, RB AF Grissom, Virgil Ivan White, Edward Higgins, II Chaffee, Roger Bruce BA Burgess, C Doolan, K BF Burgess, C Doolan, K TI Countdown to Disaster SO FALLEN ASTRONAUTS: HEROES WHO DIED REACHING FOR THE MOON SE Outward Odyssey-A Peoples History of Spaceflight LA English DT Article; Book Chapter C1 [Grissom, Virgil Ivan; White, Edward Higgins, II] USAF, Washington, DC 20330 USA. [Chaffee, Roger Bruce] USN, Washington, DC USA. RP Grissom, VI (reprint author), USAF, Washington, DC 20330 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIV NEBRASKA PRESS PI LINCOLN PA 1111 LINCOLN MALL, LINCOLN, NE 68588-0630 USA BN 978-0-8032-8599-6; 978-0-8032-8509-5 J9 OUTW ODYSS PEOPLES PY 2016 BP 117 EP 217 PG 101 WC History & Philosophy Of Science SC History & Philosophy of Science GA BF7WD UT WOS:000384525800005 ER PT J AU Tang, YX He, CL Imler, GH Parrish, DA Shreeve, JM AF Tang, Yongxing He, Chunlin Imler, Gregory H. Parrish, Damon A. Shreeve, Jean'ne M. TI Design and synthesis of N-methylene-C linked tetrazole and nitramino-1,2,4-triazole: an approach to promising energetic materials SO JOURNAL OF MATERIALS CHEMISTRY A LA English DT Article ID HIGH-PERFORMANCE; THERMAL-STABILITY; SENSITIVITY; SALTS; MONO AB Asymmetric disubstituted N-methylene-C-bridged nitrogen-rich heterocycles (tetrazole and nitramino1,2,4-triazole) were synthesized in three steps and their nitrogen-rich energetic salts were prepared. The structures of these compounds have been established by spectral and analytical data, and, in some cases, by single crystal X-ray diffraction studies. Detonation performance was determined using the EXPLO5 6.01 code based on calculated heats of formation and measured densities. The N-methylene-C-bridged compounds exhibit moderate thermal stability combined with high detonation performance and acceptable sensitivity and therefore are of interest for possible application as energetic materials. C1 [Tang, Yongxing; He, Chunlin; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA. [Imler, Gregory H.; Parrish, Damon A.] Naval Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA. RP Shreeve, JM (reprint author), Univ Idaho, Dept Chem, Moscow, ID 83844 USA. EM jshreeve@uidaho.edu FU Office of Naval Research [N00014-16-1-2089]; Defense Threat Reduction Agency [HDTRA 1-15-1-0028]; Murdock Charitable Trust FX This work was supported by the Office of Naval Research (N00014-16-1-2089) and the Defense Threat Reduction Agency (HDTRA 1-15-1-0028). We are also grateful to the Murdock Charitable Trust for funding the Bruker AVANCE 500 nuclear magnetic resonance spectrometer. NR 34 TC 0 Z9 0 U1 4 U2 4 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 2016 VL 4 IS 36 BP 13923 EP 13929 DI 10.1039/c6ta05057c PG 7 WC Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Energy & Fuels; Materials Science GA DX2YE UT WOS:000384238900029 ER PT B AU Shifler, DA Sanchez, L Kedir, N Faucett, D Mahapatra, R Choi, SR AF Shifler, D. A. Sanchez, L. Kedir, N. Faucett, D. Mahapatra, R. Choi, S. R. GP ASME TI THERMAL STABILITY OF NICKEL-BASE ALLOYS SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2016, VOL 1 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 13-17, 2016 CL Seoul, SOUTH KOREA SP Int Gas Turbine Inst DE Ni-base superalloys; thermal stability; oxidation; microstructures; gamma-prime/gamma phases; Vickers hardness; interdiffusion; compressive yield stress ID SUPERALLOY AB The thermal stability of three Ni-base samples was assessed at 1850F (1010 degrees C) and 2000F (1093 degrees C) in ambient air as a function of exposure time ranging from 500 to 2000 hrs. Assessments of thermal stability of the samples were made using weight change, oxidation, microstructural evolution, and post-exposure mechanical properties such as Vickers microhardness and compressive yield stress. The three samples included bare Alloy "A" (9Cr-6A1-1.5Hf), Alloy "A" with.an overlay coating, and bare Alloy "B" (12Cr-3A1), were not much different in compositions. At 1850F, oxidation as measured by weight change was insignificant up to 2000 h in all the three samples. At 2000F, however, noticeable weight change occurred, increasing linearly with time all in the three samples. The oxidation penetration from surface to matrix for these samples was more intense when exposed to above 1000 hours, forming various oxides, gamma-prime (Upsilon') depletion zones, and TCP phases. The size and area fraction of Upsilon' precipitates were determined as a function of temperature and exposure time. Post-exposure mechanical properties were also assessed through Vickers hardness and compressive yield stress. A maximum change in Vickers hardness was about 10% at both temperatures up to 2000 hrs. The change in compressive yield stress was more pronounced than the change in Vickers hardness as a function of thermal exposure and time. C1 [Shifler, D. A.] Off Naval Res, Arlington, VA 22203 USA. [Sanchez, L.; Kedir, N.; Faucett, D.; Mahapatra, R.; Choi, S. R.] Naval Air Syst Command, Patuxent River, MD 20670 USA. RP Shifler, DA (reprint author), Off Naval Res, Arlington, VA 22203 USA. EM david.shifler@navy.mil NR 28 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4968-2 PY 2016 AR UNSP V001T22A008 PG 12 WC Engineering, Mechanical SC Engineering GA BF8EI UT WOS:000384850000063 ER PT B AU Li, YC Chen, H Tan, D Katz, J AF Li, Yuanchao Chen, Huang Tan, David Katz, Joseph GP ASME TI EFFECTS OF TIP CLEARANCE AND OPERATING CONDITIONS ON THE FLOW STRUCTURE AND TURBULENCE WITHIN AN AXIAL COMPRESSOR ROTOR PASSAGE SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2016, VOL 2A LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 13-17, 2016 CL Seoul, SOUTH KOREA SP Int Gas Turbine Inst ID PARTICLE IMAGE VELOCIMETRY; LEAKAGE VORTEX; WAKE; GAP; PIV; PUMP; CASCADE AB The flows in the tip regions of two rotors with blades of similar geometry but different tip clearance are studied experimentally to determine the effect of gap on the flow structure at different operating conditions. The experiments have been performed in the JHU optically index-matched facility, where the refractive index of the fluid is matched with that of the acrylic rotor blades and casing, facilitating unobstructed Stereo Particle Image Velocimetry (SPIV) measurements. The blade geometries are based on the first one and a half stages of the Low Speed Axial Compressor (LSAC) facility at NASA Glenn. The tip gap sizes are 0.49% and 2.3% of the blade chordlength, and measurements are performed for two flow rates, the lower of which is just above stall conditions. The presence and trajectories of the tip leakage vortex (TLV) and secondary structures are visualized by recording high speed movies of cavitation at lower pressures. The results consist of performance curves, distributions of velocity, circumferential vorticity and turbulent kinetic energy, as well as the strength and trajectory of vortices. Increasing the tip gap reduces the static-to-static pressure coefficient for all flow conditions. For the higher flow rate, a wider tip gap has several effects: (i) It delays the rollup of the TLV and its detachment from the suction side (SS) corner of the blade, presumably due to the larger distance from the endwall casing and the 'image vortex'. (ii) It alters the blade loading and reduces the circulation shed from the blade. (iii) It delays the onset of TLV bursting in the aft part of the rotor passage. (iv) For both gaps, the endwall boundary layer separates at the point where the leakage flow meets the opposite-direction main passage flow. For the wide gap, the separated layer with opposite sign vorticity remains above the TLV; while for the narrow gap, the TLV entrains this layer around itself. And (v) consistent with the major differences in flow structure, the spatial distributions and magnitudes of all the turbulence intensity are also very different. Trends and flow structure are quite different at pre-stall conditions. Most notably, TLV rollup is still delayed for the wide gap, but vortex bursting and associated arrival of multiple secondary structures to the pressure side (PS) of the next blade occur earlier. Consequently, the turbulence level on both sides of the blade tip is substantially higher, and remnants of the previous TLV are ingested into the next tip gap. C1 [Li, Yuanchao; Chen, Huang; Tan, David; Katz, Joseph] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA. [Tan, David] Naval Surface Warfare Ctr, Carderock Div NSWCCD, 9500 MacArthur Blvd, Bethesda, MD 20817 USA. RP Li, YC (reprint author), Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA. NR 46 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 978-0-7918-4969-9 PY 2016 AR UNSP V02AT37A030 PG 16 WC Engineering, Mechanical SC Engineering GA BF8EK UT WOS:000384850200030 ER PT B AU Volino, RJ AF Volino, Ralph J. GP ASME TI CONTROL OF TIP LEAKAGE IN A HIGH PRESSURE TURBINE CASCADE USING TIP BLOWING SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2016, VOL 2B LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 13-17, 2016 CL Seoul, SOUTH KOREA SP Int Gas Turbine Inst ID HEAT-TRANSFER; BLADE AB Blowing from the tip of a turbine blade was studied experimentally to determine if total pressure loss could be reduced. Experiments were done with a linear cascade in a low speed wind tunnel. Total pressure drop through the blade row and secondary velocity fields in the passage between two blades were measured. Cases were documented with various blowing hole configurations on flat and squealer tipped blades. Blowing normal to the tip was not helpful, and in some cases increased losses. Blowing from the bottom of a squealer cavity provided little benefit. With a flat tip, blowing from holes located near and inclined toward the pressure side generally reduced total pressure drop by reducing the effect of the tip leakage vortex. Holes near the axial location of maximum loading were most helpful, while holes closer to the leading and trailing edges were not as effective. Higher jet velocity resulted in larger total pressure drop reduction. With a tip gap of 1.5% of axial chord, jets with a velocity 1.5 times the cascade inlet velocity had a significant effect. A total pressure drop reduction of the order 20% was possible using a jet mass flow of about 0.4% of the main flow. Jets were most effective with smaller tip gaps, as they were more able to counter the leakage flow. C1 [Volino, Ralph J.] US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA. RP Volino, RJ (reprint author), US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA. EM volino@usna.edu NR 30 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 978-0-7918-4970-5 PY 2016 AR UNSP V02BT38A019 PG 14 WC Engineering, Mechanical SC Engineering GA BF8EL UT WOS:000384850300019 ER PT J AU Chun, C Ding, GL Mayhew, D Oxley, J AF Chun, Carolyn Ding, Guoli Mayhew, Dillon Oxley, James TI UNAVOIDABLE CONNECTED MATROIDS RETAINING A SPECIFIED MINOR SO SIAM JOURNAL ON DISCRETE MATHEMATICS LA English DT Article DE unavoidable minor; connected matroid AB A sufficiently large connected matroid M contains a big circuit or a big cocircuit. Wu showed that we can ensure that M has a big circuit or a big cocircuit containing any chosen element of M. In this paper, we prove that, for a fixed connected matroid N, if M is a sufficiently large connected matroid having N as a minor, then, up to duality, either M has a big connected minor in which N is a spanning restriction and the deletion of E(N) is a large connected uniform matroid, or M has, as a minor, the 2-sum of a big circuit and a connected single-element extension or coextension of N. In addition, we find a set of unavoidable minors for the class of graphs that have a cycle and a bond with a big intersection. C1 [Chun, Carolyn] US Naval Acad, Dept Math, Annapolis, MD 21402 USA. [Ding, Guoli; Oxley, James] Louisiana State Univ, Dept Math, Baton Rouge, LA 70803 USA. [Mayhew, Dillon] Victoria Univ Wellington, Sch Math Stat & Operat Res, Wellington, New Zealand. RP Chun, C (reprint author), US Naval Acad, Dept Math, Annapolis, MD 21402 USA. EM chun@usna.edu; ding@math.lsu.edu; dillon.mayhew@msor.vuw.ac.nz; oxley@math.lsu.edu OI Chun, Carolyn/0000-0002-1872-8951 FU London Mathematical Society Travel Grant; National Science Foundation; Marsden Fund of New Zealand; National Security Agency FX The authors were partially supported by a London Mathematical Society Travel Grant, the National Science Foundation, the Marsden Fund of New Zealand, and the National Security Agency. NR 11 TC 0 Z9 0 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0895-4801 EI 1095-7146 J9 SIAM J DISCRETE MATH JI SIAM Discret. Math. PY 2016 VL 30 IS 3 BP 1590 EP 1606 DI 10.1137/14096089X PG 17 WC Mathematics, Applied SC Mathematics GA DY3TH UT WOS:000385017100017 ER PT J AU Causley, MF Cho, HN Christlieb, AJ Seal, DC AF Causley, Matthew F. Cho, Hana Christlieb, Andrew J. Seal, David C. TI METHOD OF LINES TRANSPOSE: HIGH ORDER L-STABLE O(N) SCHEMES FOR PARABOLIC EQUATIONS USING SUCCESSIVE CONVOLUTION SO SIAM JOURNAL ON NUMERICAL ANALYSIS LA English DT Article DE method of lines transpose; transverse method of lines; Rothe's method; parabolic PDEs; implicit methods; boundary integral methods; alternating direction implicit methods; ADI schemes; higher order L-stable; multiderivative ID FOURIER-SPECTRAL METHOD; SPINODAL DECOMPOSITION; DIFFERENTIAL EQUATIONS; WAVE-EQUATION; ALLEN-CAHN; POTENTIALS; MODELS AB We present a new solver for nonlinear parabolic problems that is L-stable and achieves high order accuracy in space and time. The solver is built by first constructing a one-dimensional heat equation solver that uses fast O(N) convolution. This fundamental solver has arbitrary order of accuracy in space and is based on the use of the Green's function to invert a modified Helmholtz equation. Higher orders of accuracy in time are then constructed through a novel technique known as successive convolution (or resolvent expansions). These resolvent expansions facilitate our proofs of stability and convergence, and permit us to construct schemes that have provable stiff decay. The multidimensional solver is built by repeated application of dimensionally split independent fundamental solvers. Finally, we solve nonlinear parabolic problems by using the integrating factor method, where we apply the basic scheme to invert linear terms (that look like a heat equation), and make use of Hermite-Birkhoff interpolants to integrate the remaining nonlinear terms. Our solver is applied to several linear and nonlinear equations including heat, Allen-Cahn, and the FitzHugh-Nagumo system of equations in one and two dimensions. C1 [Causley, Matthew F.] Kettering Univ, Dept Math, Flint, MI 48504 USA. [Cho, Hana; Christlieb, Andrew J.] Michigan State Univ, Dept Math, E Lansing, MI 48824 USA. [Christlieb, Andrew J.] Michigan State Univ, Dept Elect Engn, E Lansing, MI 48824 USA. [Seal, David C.] US Naval Acad, Dept Math, Annapolis, MD 21402 USA. RP Causley, MF (reprint author), Kettering Univ, Dept Math, Flint, MI 48504 USA. EM mcausley@kettering.edu; chohana@msu.edu; andrewch@math.msu.edu; seal@usna.edu FU AFOSR [FA9550-12-1-0343, FA9550-12-1-0455, FA9550-15-1-0282]; NSF [DMS-1418804]; New Mexico Consortium grant [NMC0155-01]; NASA [NMX15AP39G] FX This work was supported in part by AFOSR grants FA9550-12-1-0343, FA9550-12-1-0455, and FA9550-15-1-0282, NSF grant DMS-1418804, New Mexico Consortium grant NMC0155-01, and NASA grant NMX15AP39G. NR 45 TC 1 Z9 1 U1 1 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1429 EI 1095-7170 J9 SIAM J NUMER ANAL JI SIAM J. Numer. Anal. PY 2016 VL 54 IS 3 BP 1635 EP 1652 DI 10.1137/15M1035094 PG 18 WC Mathematics, Applied SC Mathematics GA DY3WC UT WOS:000385026000014 ER PT B AU O'Neil, HF Baker, EL Perez, RS AF O'Neil, Harold F. Baker, Eva L. Perez, Ray S. BE ONeil, HF Baker, EL Perez, RS TI USING GAMES AND SIMULATIONS FOR TEACHING AND ASSESSMENT Key Issues PREFACE SO USING GAMES AND SIMULATIONS FOR TEACHING AND ASSESSMENT: KEY ISSUES LA English DT Editorial Material; Book Chapter C1 [O'Neil, Harold F.] Univ Southern Calif, Educ Psychol & Technol, Rossier Sch Educ, Los Angeles, CA 90089 USA. [Baker, Eva L.] Univ Calif Los Angeles, Natl Ctr Res Evaluat Stand & Student Testing CRES, Los Angeles, CA USA. [Perez, Ray S.] Off Naval Res, Arlington, VA USA. RP O'Neil, HF (reprint author), Univ Southern Calif, Educ Psychol & Technol, Rossier Sch Educ, Los Angeles, CA 90089 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU ROUTLEDGE PI ABINGDON PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND BN 978-0-415-73788-3; 978-1-315-81776-7; 978-0-415-73787-6 PY 2016 BP XXI EP XXIV PG 4 WC Education & Educational Research SC Education & Educational Research GA BF7UA UT WOS:000384481500001 ER PT B AU Perez, RS Skinner, A Chatelier, P AF Perez, Ray S. Skinner, Anna Chatelier, Paul BE ONeil, HF Baker, EL Perez, RS TI LESSONS LEARNED FROM INTELLIGENT TUTORING RESEARCH FOR SIMULATION SO USING GAMES AND SIMULATIONS FOR TEACHING AND ASSESSMENT: KEY ISSUES LA English DT Article; Book Chapter ID COGNITIVE TASK-ANALYSIS; MEDICAL-EDUCATION; COMPUTER-SIMULATIONS; SELF-EXPLANATIONS; NATURAL-LANGUAGE; INSTRUCTION; SYSTEM; ACQUISITION; DIALOGUE; DESIGN C1 [Perez, Ray S.] Off Naval Res, Arlington, VA 22217 USA. [Skinner, Anna] AnthroTronix Inc, Silver Spring, MD USA. [Chatelier, Paul] Naval Postgrad Sch, Monterey, CA USA. [Chatelier, Paul] Naval Med Serv Corps, Los Angeles, CA USA. [Chatelier, Paul] Naval Postgrad Sch, Modeling & Simulat Inst MOVES, Monterey, CA USA. [Chatelier, Paul] NATO, Brussels, Belgium. [Chatelier, Paul] DoD Overseas Human Factors Med & M&S Programs, Washington, DC USA. RP Perez, RS (reprint author), Off Naval Res, Arlington, VA 22217 USA. NR 181 TC 0 Z9 0 U1 2 U2 2 PU ROUTLEDGE PI ABINGDON PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND BN 978-0-415-73788-3; 978-1-315-81776-7; 978-0-415-73787-6 PY 2016 BP 99 EP 142 PG 44 WC Education & Educational Research SC Education & Educational Research GA BF7UA UT WOS:000384481500007 ER PT B AU Perez, RS Ralph, J Niehaus, J AF Perez, Ray S. Ralph, Jason Niehaus, James BE ONeil, HF Baker, EL Perez, RS TI THE ROLE OF NEUROBIOLOGY IN TEACHING AND ASSESSING GAMES SO USING GAMES AND SIMULATIONS FOR TEACHING AND ASSESSMENT: KEY ISSUES LA English DT Article; Book Chapter ID ACTION-VIDEO-GAME; COGNITIVE CONTROL; SELECTIVE ATTENTION; WORKING-MEMORY; PREFRONTAL CORTEX; INTELLIGENCE; EXPERIENCE; EDUCATION; PLAYERS; LOAD C1 [Perez, Ray S.] Off Naval Res, Arlington, VA 22217 USA. [Perez, Ray S.] Human Syst Community Interest DoD, Dayton, OH USA. [Ralph, Jason] Naval Undersea Warfare Ctr, Newport, RI USA. [Niehaus, James] Charles River Analyt, Cambridge, MA USA. RP Perez, RS (reprint author), Off Naval Res, Arlington, VA 22217 USA. NR 64 TC 0 Z9 0 U1 0 U2 0 PU ROUTLEDGE PI ABINGDON PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND BN 978-0-415-73788-3; 978-1-315-81776-7; 978-0-415-73787-6 PY 2016 BP 163 EP 180 PG 18 WC Education & Educational Research SC Education & Educational Research GA BF7UA UT WOS:000384481500009 ER PT S AU Costley, RD Folks, WR Kirkendall, CK Galan-Comas, G Smith, EW Parker, MW Hathaway, KK AF Costley, R. Daniel Folks, William R. Kirkendall, Clay K. Galan-Comas, Gustavo Smith, Eric W. Parker, Michael W. Hathaway, Kent K. BE Dubinskii, M Post, SG TI Applications of signal multiplexing in fiber optic-based acoustic and seismic sensors SO LASER TECHNOLOGY FOR DEFENSE AND SECURITY XII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser Technology for Defense and Security XII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Optical fiber sensors; interferometry; remote sensing; acoustic sensing; seismic sensing; sensor multiplexing AB Fiber optic systems are deployed in a variety of settings as strain sensors to locate small disturbances along the length of the optical fiber cable, which is often tens of kilometers long. This technology has the advantages of low cost and design simplicity, as the sensor is its own source of telemetry and may be easily repaired or replaced. One of the limitations of current technology is noise from optical backscatter events in the fiber resulting in a degraded signal in individual spatial zones leading to signal fading. Detection within these zones along the length of the fiber is then obscured. Signal multiplexing may be used to increase sensitivity and signal-to-noise ratio and reduce signal fading. In such an architecture, multiple channels are multiplexed together and transmitted along the fiber. In this article, we report on results from two different systems that were tested using such techniques. Results are then compared with a single channel system. C1 [Costley, R. Daniel; Folks, William R.; Galan-Comas, Gustavo; Smith, Eric W.] US Army, Corps Engineers, Geotech & Struct Lab, Vicksburg, MS 39180 USA. [Kirkendall, Clay K.] Naval Res Lab, Opt Sci Div, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Parker, Michael W.] Cold Reg Res & Engn Lab, 72 Lyme Rd, Hanover, NH 03755 USA. [Hathaway, Kent K.] Coastal & Hydraul Lab, Field Res Facil, 1261 Duck Rd, Kitty Hawk, NC 27949 USA. RP Costley, RD (reprint author), US Army, Corps Engineers, Geotech & Struct Lab, Vicksburg, MS 39180 USA. NR 16 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0075-1 J9 PROC SPIE PY 2016 VL 9834 AR UNSP 98340X DI 10.1117/12.2223211 PG 9 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF8EG UT WOS:000384769800019 ER PT J AU Sozen, V Craparo, EM AF Sozen, Volkan Craparo, E. M. TI Optimal Unmanned Aerial Vehicle Allocation for Border Surveillance SO MILITARY OPERATIONS RESEARCH LA English DT Article AB Border surveillance is an important concern for nations wishing to detect and intercept intruders. Unmanned aerial vehicles (UAVs) allow for modernization of border surveillance efforts, improving performance while reducing cost. While UAVs carry a number of advantages over traditional means of border surveillance, they also present new operational challenges. This paper formulates mathematical models designed to find the best way to utilize a given fleet of UAVs by deciding their routes, altitudes, and speeds in order to maximize the probability of detecting intruders. These models can aid a decision maker in effectively acquiring and employing a UAV fleet for border surveillance. C1 [Sozen, Volkan] Turkish Army, Ankara, Turkey. [Craparo, E. M.] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Sozen, V (reprint author), Turkish Army, Ankara, Turkey. EM vsozen@kkk.tsk.tr; emcrapar@nps.edu NR 11 TC 0 Z9 0 U1 4 U2 4 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 2016 VL 21 IS 3 BP 19 EP 35 DI 10.5711/1082598321319 PG 17 WC Operations Research & Management Science SC Operations Research & Management Science GA DX8HS UT WOS:000384629300002 ER PT S AU Leitl, B Harms, F Berbekar, E Boris, J Patnaik, G Obenschain, K Fischer, S AF Leitl, Bernd Harms, Frank Berbekar, Eva Boris, Jay Patnaik, Gopal Obenschain, Keith Fischer, Susanne BE DeRademacher, E Schmelzer, P TI Local-Scale Hazmat Dispersion Modelling for First Responders Based on High-Resolution Computational Fluid Dynamics - an Overview of CT-Analyst Hamburg SO 15TH INTERNATIONAL SYMPOSIUM ON LOSS PREVENTION AND SAFETY PROMOTION (LOSS 2016) SE Chemical Engineering Transactions LA English DT Proceedings Paper CT 15th International Symposium on Loss Prevention and Safety Promotion CY JUN 05-08, 2016 CL Freiburg, GERMANY AB Accidental and deliberate releases of harmful substances pose a tremendous challenge to first responders because of the large number of possible casualties and the resulting potential environmental and economic damage in densely populated areas. Within minutes after a release, countermeasures must be taken to protect the population and environment adequately. This requires the exposed area, travel time of pollutants and possible exposure levels to be known in advance with sufficient accuracy in complex urban and industrial terrain where accidental releases are possible. This paper introduces an innovative and efficient concept for a more reliable local-scale hazmat dispersion modelling in the context of emergency response, developed at NRL. Using the current implementation of this approach for first response professionals in the city of Hamburg as an example, an overview of the emergency response tool CT-Analyst Hamburg is presented. Unique features of the tool such as source location reconstruction based on available measured data or the simulation of pollutant retention time in built-up terrain are discussed. The extensive efforts undertaken to carefully and reliably validate the first responder's tool are described. Both, the underlying CFD-LES simulations as well as the CT-Analyst tool have been validated extensively using high-resolution test data sets generated in special boundary layer wind tunnel facilities and available field test data. C1 [Leitl, Bernd; Harms, Frank; Berbekar, Eva] Univ Hamburg, Meteorol Inst, Bundesstr 55, D-20146 Hamburg, Germany. [Boris, Jay; Patnaik, Gopal; Obenschain, Keith] Naval Res Lab, Adv Computat Phys Lab, 4555 Overlook Ave, Washington, DC 20375 USA. [Fischer, Susanne] City Hamburg Minist Interior & Sports, Johanniswall 4, D-20095 Hamburg, Germany. RP Leitl, B (reprint author), Univ Hamburg, Meteorol Inst, Bundesstr 55, D-20146 Hamburg, Germany. EM bernd.leitl@uni-hamburg.de NR 5 TC 0 Z9 0 U1 2 U2 2 PU AIDIC SERVIZI SRL PI MILANO PA VIA GIUSEPPE COLOMBO 81/A, MILANO, MI 20133, ITALY SN 1974-9791 BN 978-88-95608-39-6 J9 CHEM ENGINEER TRANS PY 2016 VL 48 BP 43 EP 48 DI 10.3303/CET1648008 PG 6 WC Engineering, Industrial SC Engineering GA BF7AE UT WOS:000383876200008 ER PT S AU Garren, DA AF Garren, David A. BE Zelnio, E Garber, FD TI Signature Predictions of Surface Targets Undergoing Braking Maneuvers in Squinted Spotlight Synthetic Aperture Radar Imagery SO ALGORITHMS FOR SYNTHETIC APERTURE RADAR IMAGERY XXIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Algorithms for Synthetic Aperture Radar Imagery XXIII CY APR 21, 2016 CL Baltimore, MD SP SPIE DE Synthetic aperture radar; moving targets; radar signatures; radar imagery ID MOVING TARGETS; MORPHOLOGY AB This paper investigates methodologies for predicting the smear signatures in squinted spotlight synthetic aperture radar (SAR) imagery collections due to surface targets that are undergoing braking maneuvers. Previous analysis considered the case of broadside collection geometries. Analytic computation of a power series expansion is used to compute a generic expression for the down-range and cross-range components of the predicted mover signature. In addition, recent analysis presents capabilities for predicting the full signature shape, including the smear width and interference effects. The current investigations focuses on the effects of squinted collection geometries upon braking targets signatures. C1 [Garren, David A.] Naval Postgrad Sch, Monterey, CA 93943 USA. RP Garren, DA (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA. EM dagarren@nps.edu NR 11 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0084-3 J9 PROC SPIE PY 2016 VL 9843 AR 984303 DI 10.1117/12.2224376 PG 10 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BF7MS UT WOS:000384247400003 ER PT J AU Matei, FC Xharo, M Bala, E AF Matei, Florina Cristiana Xharo, Mimoza Bala, Eduart TI Albania's Intelligence after Hoxha: The Cat's Grin and Hidden Claws SO INTERNATIONAL JOURNAL OF INTELLIGENCE AND COUNTERINTELLIGENCE LA English DT Article C1 [Matei, Florina Cristiana] Naval Postgrad Sch, CCMR, Monterey, CA USA. [Matei, Florina Cristiana] Kings Coll London, Dept War Studies, London WC2R 2LS, England. [Xharo, Mimoza] Acad Secur Albanias State Police, Ctr Sci Res, Tirana, Albania. [Xharo, Mimoza] Def Intelligence & Secur Agcy, Anal, Tirana, Albania. [Bala, Eduart] Albanias Def Army Naval & Air Attache US, Washington, DC USA. [Bala, Eduart] Albanian State Intelligence Serv, Counter Terrorism Ctr, Tirana, Albania. [Bala, Eduart] Albanian State Intelligence Serv, Tirana, Albania. [Bala, Eduart] Albanian Def Acad, Natl Strategy & Secur Dept, Tirana, Albania. RP Matei, FC (reprint author), Naval Postgrad Sch, CCMR, Monterey, CA USA.; Matei, FC (reprint author), Kings Coll London, Dept War Studies, London WC2R 2LS, England. NR 25 TC 0 Z9 0 U1 0 U2 0 PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD PI ABINGDON PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0885-0607 EI 1521-0561 J9 INT J INTELL COUNTER JI Int. J. Intell. Counterintelligence PY 2016 VL 29 IS 2 BP 299 EP 327 DI 10.1080/08850607.2015.1083340 PG 29 WC International Relations SC International Relations GA DX4KI UT WOS:000384349400005 ER PT J AU Rubin, M AF Rubin, Michael TI Winter Is Coming: Why Vladimir Putin and the Enemies of the Free World Must Be Stopped SO INTERNATIONAL JOURNAL OF INTELLIGENCE AND COUNTERINTELLIGENCE LA English DT Book Review C1 [Rubin, Michael] Amer Enterprise Inst Publ Policy Res, Washington, DC 20036 USA. [Rubin, Michael] US Naval Postgrad Sch, Monterey, CA 93943 USA. RP Rubin, M (reprint author), Amer Enterprise Inst Publ Policy Res, Washington, DC 20036 USA.; Rubin, M (reprint author), US Naval Postgrad Sch, Monterey, CA 93943 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD PI ABINGDON PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0885-0607 EI 1521-0561 J9 INT J INTELL COUNTER JI Int. J. Intell. Counterintelligence PY 2016 VL 29 IS 4 BP 813 EP 819 DI 10.1080/08850607.2016.1177405 PG 7 WC International Relations SC International Relations GA DX4NZ UT WOS:000384359700009 ER PT J AU Hodyss, D Bishop, CH Morzfeld, M AF Hodyss, Daniel Bishop, Craig H. Morzfeld, Matthias TI To what extent is your data assimilation scheme designed to find the posterior mean, the posterior mode or something else? SO TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY LA English DT Article DE data assimilation; ensemble methods; variational methods ID VARIATIONAL DATA ASSIMILATION; ECMWF OPERATIONAL IMPLEMENTATION; NUMERICAL WEATHER-PREDICTION; METEOROLOGICAL OBSERVATIONS; KALMAN FILTER; MET OFFICE; 4D-VAR; FORMULATION; PHYSICS; SYSTEM AB Recently there has been a surge in interest in coupling ensemble-based data assimilation methods with variational methods (commonly referred to as 4DVar). Here we discuss a number of important differences between ensemble-based and variational methods that ought to be considered when attempting to fuse these methods. We note that the Best Linear Unbiased Estimate (BLUE) of the posterior mean over a data assimilation window can only be delivered by data assimilation schemes that utilise the 4-dimensional (4D) forecast covariance of a prior distribution of non-linear forecasts across the data assimilation window. An ensemble Kalman smoother (EnKS) may be viewed as a BLUE approximating data assimilation scheme. In contrast, we use the dual form of 4DVar to show that the most likely non-linear trajectory corresponding to the posterior mode across a data assimilation window can only be delivered by data assimilation schemes that create counterparts of the 4D prior forecast covariance using a tangent linear model. Since 4DVar schemes have the required structural framework to identify posterior modes, in contrast to the EnKS, they may be viewed as mode approximating data assimilation schemes. Hence, when aspects of the EnKS and 4DVar data assimilation schemes are blended together in a hybrid, one would like to be able to understand how such changes would affect the mode-or mean-finding abilities of the data assimilation schemes. This article helps build such understanding using a series of simple examples. We argue that this understanding has important implications to both the interpretation of the hybrid state estimates and to their design. C1 [Hodyss, Daniel; Bishop, Craig H.] Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA. [Morzfeld, Matthias] Univ Arizona, Dept Math, Tucson, AZ 85721 USA. RP Hodyss, D (reprint author), Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA. EM daniel.hodyss@nrlmry.navy.mil NR 40 TC 1 Z9 1 U1 1 U2 1 PU CO-ACTION PUBLISHING PI JARFALLA PA RIPVAGEN 7, JARFALLA, SE-175 64, SWEDEN SN 0280-6495 EI 1600-0870 J9 TELLUS A JI Tellus Ser. A-Dyn. Meteorol. Oceanol. PY 2016 VL 68 AR 30625 DI 10.3402/tellusa.v68.30625 PG 17 WC Meteorology & Atmospheric Sciences; Oceanography SC Meteorology & Atmospheric Sciences; Oceanography GA DX6HD UT WOS:000384483500001 ER PT J AU Cotae, P Kang, M Velazquez, A AF Cotae, Paul Kang, Myong Velazquez, Alexander GP IEEE TI Multiple Time Series Fisher Periodicity Test for the Detection of the Distributed New Shrew Attacks SO 2016 INTERNATIONAL CONFERENCE ON COMMUNICATIONS (COMM 2016) SE International Conference on Communications (ICC) LA English DT Proceedings Paper CT IEEE 11th International Conference on Communications (COMM) CY JUN 09-11, 2016 CL Bucharest, ROMANIA SP Mil Tech Acad, Politehnica Univ Bucharest, IEEE DE g-statistic; p-value; Fisher test; significance test; periodic content; low rate DoS attack detection; Shrew attack ID HARMONIC-ANALYSIS; SIEGEL TEST; COMPONENTS AB We focus on the detection of Low Rate Denial of Service Attacks (LR DoS) based on their spectral properties. Fisher g-statistics test for one time series was used to detect low frequency periodic bursts of Shrew and New Shrew attacks. The main contribution of this paper is the extension of Fisher g-statistic test to multiple time series. We developed an algorithm based on Fisher G-statistics test that identifies all attackers of the Distributed New Shrew attacks. Numerical examples of Fisher g-statistics test for one time series and of Fisher G-statistics test for multiple time series are provided. We have simulated the Shrew, New Shrew and Distributed New Shrew attacks with an NS-3 simulator. C1 [Cotae, Paul] Univ Dist Columbia, Sch Engn & Appl Sci, Elect & Comp Engn Dept, Washington, DC 20008 USA. [Kang, Myong; Velazquez, Alexander] US Navy, Res Lab, Ctr High Assurance Comp Syst, Code 5540, Washington, DC 20375 USA. RP Cotae, P (reprint author), Univ Dist Columbia, Sch Engn & Appl Sci, Elect & Comp Engn Dept, Washington, DC 20008 USA. EM pcotae@udc.edu; myong.kang@nrl.navy.mil; alexander.velazquez@nrl.navy.mil NR 25 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8197-0 J9 INT CONF COMM PY 2016 BP 9 EP 14 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BF6JR UT WOS:000383221900002 ER PT S AU Lambrakos, SG Yapijakis, C Aiken, D Shabaev, A Ramsey, S Peak, J AF Lambrakos, S. G. Yapijakis, C. Aiken, D. Shabaev, A. Ramsey, S. Peak, J. BE VoDinh, T Lieberman, RA Gauglitz, GG TI Case Study Sensitivity Analysis of Transmission Spectra for Water Contaminant Monitoring SO ADVANCED ENVIRONMENTAL, CHEMICAL, AND BIOLOGICAL SENSING TECHNOLOGIES XIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Advanced Environmental, Chemical, and Biological Sensing Technologies XIII CY APR 17-19, 2016 CL Baltimore, MD SP SPIE DE Parametric model; Transmission spectra; Absorption coefficient; Water monitoring; Ozonation; Near-absorption-edge; Window of transparency; Hyperspectral imaging AB Monitoring of contaminants associated with specific water resources using transmission spectra, with respect to types and relative concentrations, requires tracking statistical profiles of water contaminants in terms of spatial-temporal distributions of electromagnetic absorption spectra ranging from the ultraviolet to infrared. For this purpose, correlation between spectral signatures and types of contaminants within specific water resources must be made, as well as correlation of spectral signatures with results of processes for removal of contaminants, such as ozonation. Correlation between absorption spectra and changes in chemical and physical characteristics of contaminants, within a volume of sampled solution, requires sufficient sensitivity. The present study examines the sensitivity of transmission spectra with respect to general characteristics of water contaminants for spectral analysis of water samples. C1 [Aiken, D.; Ramsey, S.; Peak, J.] Naval Res Lab, Signature Technol Off, 4555 Overlook Ave,Southwest, Washington, DC 20375 USA. [Lambrakos, S. G.] Naval Res Lab, Ctr Computat Mat, Mat Sci & Technol Div, 4555 Overlook Ave,Southwest, Washington, DC 20375 USA. [Yapijakis, C.] Albert Nerkin Sch Engn, Cooper Union, New York, NY USA. [Shabaev, A.] George Mason Univ, Fairfax, VA 22030 USA. RP Lambrakos, SG (reprint author), Naval Res Lab, Ctr Computat Mat, Mat Sci & Technol Div, 4555 Overlook Ave,Southwest, Washington, DC 20375 USA. NR 22 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0103-1 J9 PROC SPIE PY 2016 VL 9862 AR 98620L DI 10.1117/12.2220047 PG 8 WC Chemistry, Analytical; Environmental Sciences SC Chemistry; Environmental Sciences & Ecology GA BF6UO UT WOS:000383735300012 ER PT S AU Furstenberg, R Kendziora, CA Papantonakis, MR Nguyen, V McGill, RA AF Furstenberg, Robert Kendziora, Christopher A. Papantonakis, Michael R. Viet Nguyen McGill, R. Andrew BE Fountain, AW TI Characterization and control of tunable quantum cascade laser beam parameters for stand-off spectroscopy SO CHEMICAL, BIOLOGICAL, RADIOLOGICAL, NUCLEAR, AND EXPLOSIVES (CBRNE) SENSING XVII SE Proceedings of SPIE LA English DT Proceedings Paper CT 17th Meeting of the Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing Conference met as part of the SPIE Defense + Commercial Sensing (DCS) Symposium CY APR 18-20, 2016 CL Baltimore, MD SP SPIE DE Quantum cascade laser; QCL; beam parameters; beam profile; beam wander; mode hops; stand-off spectroscopy; photo-thermal spectroscopy AB Infrared active stand-off detection techniques often employ high power tunable quantum cascade lasers (QCLs) for target illumination. Due to the distances involved, any fluctuation of the laser beam direction and/or beam profile is amplified at the sample position. If not accounted for, this leads to diminished performance (both sensitivity and selectivity) of the detection technique as a direct result of uncertainties in laser irradiance at each imaged pixel of the sample. This is especially true for detection approaches which illuminate a relatively small footprint at the target since the laser beam profile spatial fluctuations are often comparable to the (focused) laser spot size. Also, there is often a necessary trade-off between high output QCL power and beam quality. Therefore, precise characterization of the laser beam profile and direction as a function of laser properties (tuning wavelength, current and operating mode: pulsed or CW) is imperative. We present detailed measurements of beam profiles, beam wander and power fluctuations and their reproducibility as function of laser wavelength and stand-off distance for a commercially available tunable quantum cascade laser. We present strategies for improving beam quality by compensating for fluctuations using a motorized mirror and a pair of motorized lenses. We also investigate QCL mode hops and how they affect laser beam properties at the sample. Detailed mode-hop stability maps were measured. C1 [Furstenberg, Robert; Kendziora, Christopher A.; Papantonakis, Michael R.; Viet Nguyen; McGill, R. Andrew] Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Furstenberg, R (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM robert.furstenberg@nrl.navy.mil NR 21 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0065-2 J9 PROC SPIE PY 2016 VL 9824 AR UNSP 98240L DI 10.1117/12.2224003 PG 12 WC Agricultural Engineering; Optics SC Agriculture; Optics GA BF6PI UT WOS:000383503600016 ER PT S AU Marsh, JC Litz, MS Carroll, JJ Chiara, CJ Guardala, NA Demaree, JD AF Marsh, J. C. Litz, M. S. Carroll, J. J. Chiara, C. J. Guardala, N. A. Demaree, J. D. BE Fountain, AW TI Progress Towards a LaBr3-based Associated Particle Imaging Test Bed for Contraband Detection and Bulk Materials Analysis SO CHEMICAL, BIOLOGICAL, RADIOLOGICAL, NUCLEAR, AND EXPLOSIVES (CBRNE) SENSING XVII SE Proceedings of SPIE LA English DT Proceedings Paper CT 17th Meeting of the Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing Conference met as part of the SPIE Defense + Commercial Sensing (DCS) Symposium CY APR 18-20, 2016 CL Baltimore, MD SP SPIE DE LaBr3; Associated Particle Imaging; VME AB An array of nine 811 cm(3) LaBr3:Ce crystals coupled to photomultiplier tubes is used to detect. rays induced from materials by neutrons emitted from a Deuterium-Tritium neutron generator. The accompanying digital data acquisition system has been developed to understand operational limits for remote detection of explosive contraband and analysis of material composition. Results are presented demonstrating current system performance, with the eventual goal of detecting a small (less than 5%) change in the composition of a material. Improvement expected over existing analog data collection systems are described along with discussion of the enhancements. C1 [Marsh, J. C.; Chiara, C. J.] US Army Res Lab, Adelphi Lab Ctr, Oak Ridge Associated Univ Fellowship Program, Adelphi, MD 20783 USA. [Litz, M. S.; Carroll, J. J.] US Army Res Lab, Adelphi Lab Ctr, Adelphi, MD USA. [Guardala, N. A.] Naval Surface Warfare Ctr, Carderock Div, Carderock, MD USA. [Demaree, J. D.] US Army Res Lab, Aberdeen, MD USA. RP Marsh, JC (reprint author), US Army Res Lab, Adelphi Lab Ctr, Oak Ridge Associated Univ Fellowship Program, Adelphi, MD 20783 USA. EM jarrod.c.marsh.ctr@mail.mil; marc.s.litz@us.army.mil; james.j.carroll99.civ@mail.mil; christopher.j.chiara2.ctr@mail.mil; noel.a.guardala.civ@mail.mil; john.d.demaree.civ@mail.mil NR 22 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0065-2 J9 PROC SPIE PY 2016 VL 9824 AR UNSP 98240N DI 10.1117/12.2224157 PG 12 WC Agricultural Engineering; Optics SC Agriculture; Optics GA BF6PI UT WOS:000383503600018 ER PT S AU Papantonakis, MR Furstenberg, R Nguyen, V Fischer, T Howard, A Adams, K Kendziora, CA McGill, RA AF Papantonakis, Michael R. Furstenberg, Robert Viet Nguyen Fischer, Thomas Howard, Andrew Adams, Katy Kendziora, Christopher A. McGill, R. Andrew BE Fountain, AW TI Persistence of Explosives Under Real World Conditions SO CHEMICAL, BIOLOGICAL, RADIOLOGICAL, NUCLEAR, AND EXPLOSIVES (CBRNE) SENSING XVII SE Proceedings of SPIE LA English DT Proceedings Paper CT 17th Meeting of the Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing Conference met as part of the SPIE Defense + Commercial Sensing (DCS) Symposium CY APR 18-20, 2016 CL Baltimore, MD SP SPIE DE Trace explosives detection; 2,4-dinitrotolene; particles; sublimation; humidity; airflow velocity; fingerprint; sieving; test coupon; particle image analysis ID FINGERPRINT FORMATION; THERMAL PLUME; AIR-FLOW; TRANSPORT; DYNAMICS; BODY AB Those that handle explosives materials invariably become contaminated with particulates of materials, which become entrapped in the grooves of the fingers and are then transferred by contact to other surfaces. These particles provide an evidentiary trail which is useful for security applications, a fact which is enhanced by the fact that many explosives materials of interest have low vapor pressures, augmenting their longevity. The persistence or stability of explosives particles on a substrate is a function of several environmental parameters or particle properties, including vapor pressure, particle size and geometry, airflow, particle field size, substrate topography, humidity, reactivity, adlayers, admixtures, particle areal density, and temperature. In this work we deposited particles of 2,4-dinitrotoluene on standard microscope glass slides by particle sieving and studied their sublimation as a function of temperature and relative humidity. A custom airflow cell allowed us to monitor the particles with in situ photomicroscopy while keeping the airflow over the particles, substrate type, and areal field size constant for each experiment. We define the size-independent radial sublimation velocity for the equivalent sphere of a particle as the parameter to characterize the sublimation rate. The dependence of the sublimation rate for an ensemble of particles on temperature was quantified according the radial sublimation velocity, while the sublimation of 2,4-dinintrotoluene was found to independent of relative humidity between 25-90%. C1 [Papantonakis, Michael R.; Furstenberg, Robert; Viet Nguyen; Kendziora, Christopher A.; McGill, R. Andrew] US Naval Res Lab, Washington, DC 20375 USA. [Fischer, Thomas] Fed Off Bundeswehr Equipment IT & In Serv Support, D-56073 Koblenz, Germany. [Howard, Andrew] Amer Soc Engn Educ, Washington, DC USA. [Adams, Katy] Oak Ridge Inst Sci & Educ, Oak Ridge, TN USA. RP McGill, RA (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM mcgill@nrl.navy.mil NR 16 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0065-2 J9 PROC SPIE PY 2016 VL 9824 AR UNSP 982419 DI 10.1117/12.2223910 PG 7 WC Agricultural Engineering; Optics SC Agriculture; Optics GA BF6PI UT WOS:000383503600036 ER PT S AU Stievater, TH Khurgin, JB Holmstrom, SA Kozak, DA Pruessner, MW Rabinovich, WS McGill, RA AF Stievater, Todd H. Khurgin, Jacob B. Holmstrom, Scott A. Kozak, Dmitry A. Pruessner, Marcel W. Rabinovich, William S. McGill, R. Andrew BE Fountain, AW TI Nanophotonic Waveguides for Chip-Scale Raman Spectroscopy: Theoretical Considerations SO CHEMICAL, BIOLOGICAL, RADIOLOGICAL, NUCLEAR, AND EXPLOSIVES (CBRNE) SENSING XVII SE Proceedings of SPIE LA English DT Proceedings Paper CT 17th Meeting of the Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing Conference met as part of the SPIE Defense + Commercial Sensing (DCS) Symposium CY APR 18-20, 2016 CL Baltimore, MD SP SPIE DE Raman Spectroscopy; Chemical Sensing; Nanophotonics; Waveguides AB Highly evanescent nanophotonic waveguides enable extremely efficient Raman spectroscopy in chip-scale photonic integrated circuits due to the continuous excitation and collection of Raman scattering along the entire waveguide length. Such waveguides can be used for detection and identification of condensed-phase analytes, or, if functionalized by a sorbent as a top-cladding, can be used to detect trace concentrations of chemical species. The scattering efficiency is modified in guided-mode structures compared to unconfined, micro-Raman geometries. Here, we describe the theoretical framework for understanding the Raman scattering efficiency in nanophotonic waveguides, and compare these calculations to our measurements of trace gases in hypersorbent-clad silicon nitride waveguides. C1 [Stievater, Todd H.; Kozak, Dmitry A.; Pruessner, Marcel W.; Rabinovich, William S.; McGill, R. Andrew] Naval Res Lab, Washington, DC 20375 USA. [Khurgin, Jacob B.] Johns Hopkins Univ, Dept Elect Engn, Baltimore, MD 21218 USA. [Holmstrom, Scott A.] Univ Tulsa, Dept Phys & Engn Phys, Tulsa, OK 74104 USA. RP Stievater, TH (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM opticalmems@nrl.navy.mil NR 6 TC 0 Z9 0 U1 4 U2 4 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0065-2 J9 PROC SPIE PY 2016 VL 9824 AR UNSP 982404 DI 10.1117/12.2227905 PG 6 WC Agricultural Engineering; Optics SC Agriculture; Optics GA BF6PI UT WOS:000383503600004 ER PT S AU Breger, J Delehanty, J Susumu, K Anderson, G Muttenhaler, M Dawson, P Medintzi, I AF Breger, Joyce Delehanty, James Susumu, Kimihiro Anderson, George Muttenhaler, Markus Dawson, Philip Medintzi, Igor BE Parak, WJ Osinski, M Liang, XJ TI The Influence of Cell Penetrating Peptide Branching on Cellular Uptake of QDs SO COLLOIDAL NANOPARTICLES FOR BIOMEDICAL APPLICATIONS XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Colloidal Nanoparticles for Biomedical Applications XI CY FEB 13-15, 2016 CL San Francisco, CA SP SPIE DE nanoassemblies; cell-penetrating peptide; quantum dot; controlled release; fluorescence ID QUANTUM DOTS; DELIVERY; PROTEIN AB Semiconductor quantum dots (QDs) serve as a valuable platform for understating the intricacies of nanoparticle cellular uptake and fate for the development of theranostics. Developing novel internalization peptides that maximize cellular uptake while minimizing the amount of peptide is important to allow space on the nanoparticle for other cargo (e.g. drugs). We have designed a range of branched, dendritic internalization peptides composed of polyarginine (Arg(9)) branches (1 to 16 repeats) attached a dendritic wedge based on the sequence WP9G2H6. By attaching these branched dendritic peptides to QD's, we can study the influence of branching on cellular uptake as a function of time, ratio, and degree of branching. C1 [Breger, Joyce; Delehanty, James; Anderson, George; Medintzi, Igor] US Naval Res Lab, Ctr Bio Mol Sci & Engn, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Susumu, Kimihiro] US Naval Res Lab, Opt Phys Branch, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Muttenhaler, Markus; Dawson, Philip] Scripps Res Inst, Dept Chem, 10550 North Torrey Pines Rd, La Jolla, CA 92037 USA. RP Breger, J (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, 4555 Overlook Ave SW, Washington, DC 20375 USA. RI Anderson, George/D-2461-2011 OI Anderson, George/0000-0001-7545-9893 NR 8 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-62841-956-6 J9 PROC SPIE PY 2016 VL 9722 AR 97220R DI 10.1117/12.2207311 PG 5 WC Engineering, Biomedical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Optics SC Engineering; Science & Technology - Other Topics; Materials Science; Optics GA BF6XO UT WOS:000383763300019 ER PT S AU Diaz, SA Brown, CW Malanoski, AP Oh, E Susumu, K Medintz, IL AF Diaz, Sebastian A. Brown, Carl W., III Malanoski, Anthony P. Oh, Eunkeu Susumu, Kimihiro Medintz, Igor L. BE Parak, WJ Osinski, M Liang, XJ TI Quantum dot based enzyme activity sensors present deviations from Michaelis-Menten kinetic model SO COLLOIDAL NANOPARTICLES FOR BIOMEDICAL APPLICATIONS XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Colloidal Nanoparticles for Biomedical Applications XI CY FEB 13-15, 2016 CL San Francisco, CA SP SPIE ID PROTEOLYTIC ACTIVITY; GOLD NANOPARTICLES; ACCELERATION; FLUORESCENCE; LIGANDS AB Nanosensors employing quantum dots (QDs) and enzyme substrates with fluorescent moieties offer tremendous promise for disease surveillance/diagnostics and as high-throughput co-factor assays. Advantages of QDs over other nanoscaffolds include their small size and inherent photochemical properties such as size tunable fluorescence, ease in attaching functional moieties, and resistance to photobleaching. These properties make QDs excellent Forster Resonance Energy Transfer (FRET) donors; well-suited for rapid, optical measurement applications. We report enzyme sensors designed with a single FRET donor, the QD donor acting as a scaffold to multiple substrates or acceptors. The QD-sensor follows the concrete activity of the enzyme, as compared to the most common methodologies that quantify the enzyme amount or its mRNA precursor. As the sensor reports on the enzyme activity in real-time we can actively follow the kinetics of the enzyme. Though classic Michaelis-Menten (MM) parameters can be obtained to describe the activity. In the course of these experiments deviations, both decreasing and increasing the kinetics, from the common MM model were observed upon close examinations. From these observations additional experiments were undertaken to understand the varying mechanisms. Different enzymes can present different deviations depending on the chosen target, e.g. trypsin appears to present a positive hopping mechanism while collagenase demonstrates a QD caused reversible inhibition. C1 [Diaz, Sebastian A.; Brown, Carl W., III; Malanoski, Anthony P.; Medintz, Igor L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA. [Oh, Eunkeu; Susumu, Kimihiro] Opt Sci Div, Code 5600, Columbia, MD 21046 USA. [Oh, Eunkeu; Susumu, Kimihiro] Sotera Def Solut, Columbia, MD 21046 USA. RP Medintz, IL (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA. RI Malanoski, Anthony/C-7814-2011 OI Malanoski, Anthony/0000-0001-6192-888X NR 23 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-62841-956-6 J9 PROC SPIE PY 2016 VL 9722 AR 97220K DI 10.1117/12.2214235 PG 9 WC Engineering, Biomedical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Optics SC Engineering; Science & Technology - Other Topics; Materials Science; Optics GA BF6XO UT WOS:000383763300015 ER PT S AU Nag, OK Naciri, J Spillmann, CM Delehanty, JB AF Nag, Okhil K. Naciri, Jawad Spillmann, Christopher M. Delehanty, James B. BE Parak, WJ Osinski, M Liang, XJ TI Membrane-Targeting Liquid Crystal Nanoparticles (LCNPs) for Drug Delivery SO COLLOIDAL NANOPARTICLES FOR BIOMEDICAL APPLICATIONS XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Colloidal Nanoparticles for Biomedical Applications XI CY FEB 13-15, 2016 CL San Francisco, CA SP SPIE DE Nanoparticle actuation; drug delivery; controlled release; liquid crystal; fluorescence ID THERAPY; NANOCOLLOIDS AB In addition to maintaining the structural integrity of the cell, the plasma membrane regulates multiple important cellular processes, such as endocytosis and trafficking, apoptotic pathways and drug transport. The modulation or tracking of such cellular processes by means of controlled delivery of drugs or imaging agents via nanoscale delivery systems is very attractive. Nanoparticle-mediated delivery systems that mediate long-term residence (e.g., days) and controlled release of the cargoes in the plasma membrane while simultaneously not interfering with regular cellular physiology would be ideal for this purpose. Our laboratory has developed a plasma membrane-targeted liquid crystal nanoparticle (LCNP) formulation that can be loaded with dyes or drugs which can be slowly released from the particle over time. Here we highlight the utility of these nanopreparations for membrane delivery and imaging. C1 [Nag, Okhil K.; Naciri, Jawad; Spillmann, Christopher M.; Delehanty, James B.] Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900,4555 Overlook Ave SW, Washington, DC 20375 USA. RP Nag, OK (reprint author), Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900,4555 Overlook Ave SW, Washington, DC 20375 USA. NR 16 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-62841-956-6 J9 PROC SPIE PY 2016 VL 9722 AR 972215 DI 10.1117/12.2212529 PG 6 WC Engineering, Biomedical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Optics SC Engineering; Science & Technology - Other Topics; Materials Science; Optics GA BF6XO UT WOS:000383763300027 ER PT S AU Rowland, CE Susumu, K Stewart, MH Oh, E Makinen, AJ O'Shaughnessy, TJ Kushto, G Wolak, MA Erickson, JS Efros, AL Huston, AL Delehanty, JB AF Rowland, Clare E. Susumu, Kimihiro Stewart, Michael H. Oh, Eunkeu Makinen, Antti J. O'Shaughnessy, Thomas J. Kushto, Gary Wolak, Mason A. Erickson, Jeffrey S. Efros, Alexander L. Huston, Alan L. Delehanty, James B. BE Parak, WJ Osinski, M Liang, XJ TI Imaging cellular membrane potential through ionization of quantum dots SO COLLOIDAL NANOPARTICLES FOR BIOMEDICAL APPLICATIONS XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Colloidal Nanoparticles for Biomedical Applications XI CY FEB 13-15, 2016 CL San Francisco, CA SP SPIE DE neuronal action potential; cellular membrane; quantum dots; voltage sensitive dyes; patch clamp ID RESONANCE ENERGY-TRANSFER; ELECTRIC-FIELD; AUGER RECOMBINATION; CDSE NANOCRYSTALS; VOLTAGE; FLUORESCENCE; BRAIN; NANOPARTICLES; NEUROSCIENCE; DELIVERY AB Recent interest in quantum dots (QDs) stems from the plethora of potential applications that arises from their tunable absorption and emission profiles, high absorption cross sections, resistance to photobleaching, functionalizable surfaces, and physical robustness. The emergent use of QDs in biological imaging exploits these and other intrinsic properties. For example, quantum confined Stark effect (QCSE), which describes changes in the photoluminescence (PL) of QDs driven by the application of an electric field, provides an inherent means of detecting changes in electric fields by monitoring QD emission and thus points to a ready mean of imaging membrane potential (and action potentials) in electrically active cells. Here we examine the changing PL of various QDs subjected to electric fields comparable to those found across a cellular membrane. By pairing static and time-resolved PL measurements, we attempt to understand the mechanism driving electric-field-induced PL quenching and ultimately conclude that ionization plays a substantial role in initiating PL changes in systems where QCSE has traditionally been credited. Expanding on these findings, we explore the rapidity of response of the QD PL to applied electric fields and demonstrate changes amply able to capture the millisecond timescale of cellular action potentials. C1 [Rowland, Clare E.; Delehanty, James B.] Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900,4555 Overlook Ave SE, Washington, DC 20375 USA. [Susumu, Kimihiro; Stewart, Michael H.; Oh, Eunkeu; Makinen, Antti J.; Kushto, Gary; Wolak, Mason A.; Huston, Alan L.] Naval Res Lab, Div Opt Sci, Code 5600,4555 Overlook Ave SE, Washington, DC 20375 USA. [O'Shaughnessy, Thomas J.; Efros, Alexander L.] Naval Res Lab, Div Mat Sci & Technol, Code 6300,4555 Overlook Ave SE, Washington, DC 20375 USA. RP Rowland, CE (reprint author), Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900,4555 Overlook Ave SE, Washington, DC 20375 USA. NR 37 TC 1 Z9 1 U1 5 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 978-1-62841-956-6 J9 PROC SPIE PY 2016 VL 9722 AR 97220S DI 10.1117/12.2207337 PG 8 WC Engineering, Biomedical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Optics SC Engineering; Science & Technology - Other Topics; Materials Science; Optics GA BF6XO UT WOS:000383763300020 ER PT S AU Baylog, JG Wettergren, TA AF Baylog, John G. Wettergren, Thomas A. BE Bishop, SS Isaacs, JC TI Risk Based Scheduling of Multiple Search Passes for UUVs SO DETECTION AND SENSING OF MINES, EXPLOSIVE OBJECTS, AND OBSCURED TARGETS XXI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XXI CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE collaborative search; autonomous search; autonomous agents; mine hunting; search theory; search effort distribution; planning on risk; ROC optimization; double greedy algorithm AB This paper addresses selected computational aspects of collaborative search planning when multiple search agents seek to find hidden objects (i.e. mines) in operating environments where the detection process is prone to false alarms. A Receiver Operator Characteristic (ROC) analysis is applied to construct a Bayesian cost objective function that weighs and combines missed detection and false alarm probabilities. It is shown that for fixed ROC operating points and a validation criterion consisting of a prerequisite number of detection outcomes, an interval exists in the number of conducted search passes over which the risk objective function is supermodular. We show that this property is not retained beyond validation criterion boundaries. We investigate the use of greedy algorithms for distributing search effort and, in particular, examine the double greedy algorithm for its applicability under conditions of varying criteria. Numerical results are provided to demonstrate the effectiveness of the approach. C1 [Baylog, John G.; Wettergren, Thomas A.] Naval Undersea Warfare Ctr, 1176 Howell St, Newport, RI 02841 USA. RP Baylog, JG (reprint author), Naval Undersea Warfare Ctr, 1176 Howell St, Newport, RI 02841 USA. EM john.baylog@navy.mil; t.a.wettergren@ieee.org NR 12 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0064-5 J9 PROC SPIE PY 2016 VL 9823 PG 10 WC Optics SC Optics GA BF6KK UT WOS:000383223700059 ER PT S AU Major, KJ Poutous, MK Dunnill, KF Ewing, KJ Sanghera, JS Deguzman, PC Aggarwal, ID AF Major, Kevin J. Poutous, Menelaos K. Dunnill, Kevin F. Ewing, Kenneth J. Sanghera, Jasbinder S. Deguzman, P. C. Aggarwal, Ishwar D. BE Bishop, SS Isaacs, JC TI Evaluation of a biomimetic optical-filter based chemical sensor for detection of hazardous chemical vapors in the infrared SO DETECTION AND SENSING OF MINES, EXPLOSIVE OBJECTS, AND OBSCURED TARGETS XXI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XXI CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE Chemical sensing; broad-band filtered detection; overlapping signal separation; comparative discrimination spectral detection; optical sensing methods. ID DISCRIMINATION; KROMOSCOPY AB Detection of concealed hazardous materials is a pressing need for the global defense community. To address this need, the development of reliable and readily-deployable sensing devices is a key area of research. A multitude of infrared sensing techniques are being studied which allow for reliable sensing of concealed threats. Continued development in this field is working to increase the selectivity of such infrared sensors, while at the same time reducing their complexity, size and cost. We have recently developed a biomimetic optical filter based approach, based on human color vision, that utilizes multiple, broadband, overlapping infrared (IR) filters to clearly discriminate between hazardous target chemicals and interferents with very similar mid-IR spectral signatures. This technique was extensively studied in order to select filters which provide optimum selectivity for specific chemical sets. Using this knowledge, we designed and assembled a gas-phase sensor which uses three broadband mid-IR filters to detect and discriminate between a target chemical, fuel oil, and various interferents with strongly overlapping IR absorption bands in the carbon - hydrogen stretch region of the IR absorption spectrum 2700 cm(-1) - 3300 cm(-1) (3.0 mu m -3.7 mu m). We present an overview of the design and performance of this filter-based system and explore the ability of this system to detect and discriminate between strongly overlapping target and interferent chemicals. The detection results using the filter-based system are compared to numerical methods to demonstrate the operation of this methodology. We present the results of experiments with both target and interferent chemicals present with chemicals both in and out of the detection set, and discuss future field development and application of this approach. C1 [Major, Kevin J.; Aggarwal, Ishwar D.] Sotera Def Solut, Herndon, VA 20171 USA. [Poutous, Menelaos K.; Dunnill, Kevin F.; Aggarwal, Ishwar D.] Univ North Carolina Charlotte, Dept Phys & Opt Sci, Charlotte, NC 28223 USA. [Ewing, Kenneth J.; Sanghera, Jasbinder S.] Naval Res Lab, Code 5620, Washington, DC 20375 USA. [Deguzman, P. C.] Univ North Carolina Charlotte, Ctr Optoelect & Opt Commun, Charlotte, NC 28223 USA. RP Major, KJ (reprint author), Sotera Def Solut, Herndon, VA 20171 USA. NR 10 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 978-1-5106-0064-5 J9 PROC SPIE PY 2016 VL 9823 AR 98230U DI 10.1117/12.2224145 PG 6 WC Optics SC Optics GA BF6KK UT WOS:000383223700026 ER PT S AU Alley, D Cochenour, B Mullen, L AF Alley, Derek Cochenour, Brandon Mullen, Linda BE Hou, WW Arnone, RA TI Remotely operated compact underwater temporally encoded imager CUTEI SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE ROV; optical; communications; imaging; underwater; MEMS; OpenROV AB Remotely operated vehicles (ROVs) typically use traditional optical imaging systems, such as cameras, for high resolution imaging. Cameras are effective in clear water, but have extremely poor performance in degraded visual environments (DVEs) such as turbid coastal waters and harbors. This is due to the multiple scattering of the light from the particulates and organic matter in the water. Laser-based sensors have been developed to enhance optical imaging in DVEs1,3,4,5,6. However, since conventional approaches require that the illuminator and receiver be located on the same platform, the size, weight, and power (SWaP) requirements are incompatible with small ROVs. Researchers at NAVAIR have developed a low cost optical imager utilizing a bistatic geometry where the illuminator and receiver are mounted on separate, smaller platforms. The illuminator steers a modulated laser beam with a microelectromechanical system (MEMS) scanner to sequentially illuminate an underwater object. A distant receiver collects the object reflected laser light and reconstructs the imagery. Communications information, including a synchronization sequence, is encoded onto the modulation which is used by the receiver to build the image. The SWaP of the illuminator's components have been optimized and integrated into a modified version of the OpenROV, a miniature, commercial off-the-shelf ROV. This paper reports on the efforts to reduce the SWaP of the modulated illuminator and the results of testing this system in a laboratory water tank environment. C1 [Alley, Derek; Cochenour, Brandon; Mullen, Linda] Naval Air Syst Command, 22347 Cedar Point Rd,Bldg 2185 Suite 1100, Patuxent River, MD 20670 USA. RP Alley, D (reprint author), Naval Air Syst Command, 22347 Cedar Point Rd,Bldg 2185 Suite 1100, Patuxent River, MD 20670 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 982708 DI 10.1117/12.2229773 PG 6 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700007 ER PT S AU Arnone, R Vandermuelen, R Ladner, S Ondrusek, M Kovach, C Yang, HP Salisbury, J AF Arnone, Robert Vandermuelen, Ryan Ladner, Sherwin Ondrusek, Michael Kovach, Charles Yang, Haoping Salisbury, Joseph BE Hou, WW Arnone, RA TI Diurnal changes in ocean color in coastal waters SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Ocean Color; Diurnal; Uncertainty; SNPP VIIRS; AERONET; Validation; Orbit Overlap; GEOCAPE ID INHERENT OPTICAL-PROPERTIES; VALIDATION; PRODUCTS; AERONET; NETWORK AB Coastal processes can change on hourly time scales in response to tides, winds and biological activity, which can influence the color of surface waters. These temporal and spatial ocean color changes require satellite validation for applications using bio-optical products to delineate diurnal processes. The diurnal color change and capability for satellite ocean color response were determined with in situ and satellite observations. Hourly variations in satellite ocean color are dependent on several properties which include: a) sensor characterization b) advection of water masses and c) diurnal response of biological and optical water properties. The in situ diurnal changes in ocean color in a dynamic turbid coastal region in the northern Gulf of Mexico were characterized using above water spectral radiometry from an AErosol RObotic NETwork (AERONET -WavCIS CSI-06) site that provides up to 8-10 observations per day (in 15-30 minute increments). These in situ diurnal changes were used to validate and quantify natural bio-optical fluctuations in satellite ocean color measurements. Satellite capability to detect changes in ocean color was characterized by using overlapping afternoon orbits of the VIIRS-NPP ocean color sensor within 100 minutes. Results show the capability of multiple satellite observations to monitor hourly color changes in dynamic coastal regions that are impacted by tides, re-suspension, and river plume dispersion. Hourly changes in satellite ocean color were validated with in situ observation on multiple occurrences during different times of the afternoon. Also, the spatial variability of VIIRS diurnal changes shows the occurrence and displacement of phytoplankton blooms and decay during the afternoon period. Results suggest that determining the temporal and spatial changes in a color / phytoplankton bloom from the morning to afternoon time period will require additional satellite coverage periods in the coastal zone. C1 [Arnone, Robert; Yang, Haoping] Univ Southern Mississippi, Dept Marine Sci, Stennis Space Ctr, MS 39529 USA. [Ladner, Sherwin] Naval Res Lab, Stennis Space Ctr, MS 39529 USA. [Ondrusek, Michael; Kovach, Charles] NOAA, NESDIS, STAR, Ctr Weather & Climate Predict, College Pk, MD 20740 USA. [Vandermuelen, Ryan] NASA, SSAI, GSFC 616-1, Greenbelt, MD 20771 USA. [Salisbury, Joseph] Univ New Hampshire, Durham, NH 03824 USA. RP Arnone, R (reprint author), Univ Southern Mississippi, Dept Marine Sci, Stennis Space Ctr, MS 39529 USA. RI Ondrusek, Michael/F-5617-2010 OI Ondrusek, Michael/0000-0002-5311-9094 NR 18 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 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 982711 DI 10.1117/12.2241018 PG 8 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700026 ER PT S AU Bernotas, MP Nelson, C AF Bernotas, Marius P. Nelson, Charles BE Hou, WW Arnone, RA TI Probability Density Function Analysis for Optical Turbulence with Applications to Underwater Communications Systems SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Underwater optical turbulence; optical communications; turbulence emulator; probability density functions; non-linear curve fitting; bit error rate; communications performance; beam propagation AB The Weibull and Exponentiated Weibull probability density functions have been examined for the free space regime using heuristically derived shape and scale parameters. This paper extends current literature to the underwater channel and explores use of experimentally derived parameters. Data gathered in a short range underwater channel emulator was analyzed using a nonlinear curve fitting methodology to optimize the scale and shape parameters of the PDFs. This method provides insight into the scaled effects of underwater optical turbulence on a long range link, and may yield a general set of equations for determining the PDF for an underwater optical link. C1 [Bernotas, Marius P.; Nelson, Charles] US Naval Acad, 121 Buchanan Rd, Annapolis, MD 21412 USA. RP Bernotas, MP (reprint author), US Naval Acad, 121 Buchanan Rd, Annapolis, MD 21412 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 98270D DI 10.1117/12.2229814 PG 10 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700012 ER PT S AU Illig, DW Jemison, WD Mullen, LJ AF Illig, David W. Jemison, William D. Mullen, Linda J. BE Hou, WW Arnone, RA TI Independent component analysis for underwater lidar clutter rejection SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE LIDAR; blind source separation; independent component analysis; FMCW; underwater; ranging; scattering AB This work demonstrates a new statistical approach towards backscatter "clutter" rejection for continuous-wave underwater lidar systems: independent component analysis. Independent component analysis is a statistical signal processing technique which can separate a return of interest from clutter in a statistical domain. After highlighting the statistical processing concepts, we demonstrate that underwater lidar target and backscatter returns have very different distributions, facilitating their separation in a statistical domain. Example profiles are provided showing the results of this separation, and ranging experiment results are presented. In the ranging experiment, performance is compared to a more conventional frequency-domain filtering approach. Target tracking is maintained to 14.5 attenuation lengths in the laboratory test tank environment, a 2.5 attenuation length improvement over the baseline. C1 [Illig, David W.; Jemison, William D.] Clarkson Univ, Dept Elect & Comp Engn, 8 Clarkson Ave, Potsdam, NY 13699 USA. [Mullen, Linda J.] Naval Air Syst Command, NAVAIR, Electroopt & Special Mission Sensors Div, 22347 Cedar Point Rd, Patuxent River, MD 20670 USA. RP Illig, DW (reprint author), Clarkson Univ, Dept Elect & Comp Engn, 8 Clarkson Ave, Potsdam, NY 13699 USA. EM illigdw@clarkson.edu NR 22 TC 1 Z9 1 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 98270J DI 10.1117/12.2222817 PG 10 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700017 ER PT S AU Kanaev, AV Gladysz, S Barros, RAD Matt, S Nootz, GA Josset, DB Hou, W AF Kanaev, A. V. Gladysz, S. Barros, R. Almeida de Sa Matt, S. Nootz, G. A. Josset, D. B. Hou, W. BE Hou, WW Arnone, RA TI Measurements of optical underwater turbulence under controlled conditions SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Underwater light propagation; wavefront sensing; power spectrum ID LASER-BEAM PROPAGATION; OCEANIC TURBULENCE; COMMUNICATION AB Laser beam propagation underwater is becoming an important research topic because of high demand for its potential applications. Namely, ability to image underwater at long distances is highly desired for scientific and military purposes, including submarine awareness, diver visibility, and mine detection. Optical communication in the ocean can provide covert data transmission with much higher rates than that available with acoustic techniques, and it is now desired for certain military and scientific applications that involve sending large quantities of data. Unfortunately underwater environment presents serious challenges for propagation of laser beams. Even in clean ocean water, the extinction due to absorption and scattering theoretically limit the useful range to few attenuation lengths. However, extending the laser light propagation range to the theoretical limit leads to significant beam distortions due to optical underwater turbulence. Experiments show that the magnitude of the distortions that are caused by water temperature and salinity fluctuations can significantly exceed the magnitude of the beam distortions due to atmospheric turbulence even for relatively short propagation distances. We are presenting direct measurements of optical underwater turbulence in controlled conditions of laboratory water tank using two separate techniques involving wavefront sensor and LED array. These independent approaches will enable development of underwater turbulence power spectrum model based directly on the spatial domain measurements and will lead to accurate predictions of underwater beam propagation. C1 [Kanaev, A. V.] Naval Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA. [Gladysz, S.; Barros, R. Almeida de Sa] Fraunhofer Inst Optron Syst Technol & Image Explo, Gutleuthausstr 1, D-76275 Ettlingen, Germany. [Matt, S.; Hou, W.] Naval Res Lab, 1009 Balch Blvd, Stennis Space Ctr, MS 39529 USA. [Nootz, G. A.; Josset, D. B.] Naval Res Lab, Natl Res Council Postdoctoral Res Associate Resid, 1009 Balch Blvd, Stennis Space Ctr, MS 39529 USA. RP Kanaev, AV (reprint author), Naval Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA. NR 19 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 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 982705 DI 10.1117/12.2230256 PG 8 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700004 ER PT S AU Land, P Robinson, D Roeder, J Cook, D Majumdar, AK AF Land, Phillip Robinson, Dennis Roeder, James Cook, Dean Majumdar, Arun K. BE Hou, WW Arnone, RA TI Integration of a Laser Doppler Vibrometer and Adaptive Optics system for acoustic-optical detection in the presence of random water wave distortions SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Adaptive Optics; fast steering mirror; deformable mirror; Shack-Hartmann wavefront sensor; air-water interface; optical-acoustic device; acousto-optic sensing AB A new technique has been developed for improving the Signal-to-Noise Ratio (SNR) of underwater acoustic signals measured above the water's surface. This technique uses a Laser Doppler Vibrometer (LDV) and an Adaptive Optics (AO) system (consisting of a fast steering mirror, deformable mirror, and Shack-Hartmann Wavefront Sensor) for mitigating the effect of surface water distortions encountered while remotely recording underwater acoustic signals. The LDV is used to perform non-contact vibration measurements of a surface via a two beam laser interferometer. We have demonstrated the feasibility of this technique to overcome water distortions artificially generated on the surface of the water in a laboratory tank. In this setup, the LDV beam penetrates the surface of the water and travels down to be reflected off a submerged acoustic transducer. The reflected or returned beam is then recorded by the LDV as a vibration wave measurement. The LDV extracts the acoustic wave information while the AO mitigates the water surface distortions, increasing the overall SNR. The AO system records the Strehl ratio, which is a measure of the quality of optical image formation. In a perfect optical system the Strehl ratio is unity, however realistic systems with imperfections have Strehl ratios below one. The operation of the AO control system in open-loop and closed-loop configurations demonstrates the utility of the AO-based LDV for many applications. C1 [Land, Phillip; Robinson, Dennis; Roeder, James; Cook, Dean; Majumdar, Arun K.] Naval Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA. RP Land, P (reprint author), Naval Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA. EM phillip.land@navy.mil NR 5 TC 0 Z9 0 U1 3 U2 3 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 982702 DI 10.1117/12.2229300 PG 13 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700001 ER PT S AU Land, P Majumdar, AK AF Land, Phillip Majumdar, Arun K. BE Hou, WW Arnone, RA TI Demonstration of Adaptive Optics for mitigating laser propagation through a random air-water interface SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Adaptive Optics; fast steering mirror; deformable mirror; Shack-Hartmann wavefront sensor; air-water interface; random media AB This paper describes a new concept of mitigating signal distortions caused by random air-water interface using an adaptive optics (AO) system. This is the first time the concept of using an AO for mitigating the effects of distortions caused mainly by a random air-water interface is presented. We have demonstrated the feasibility of correcting the distortions using AO in a laboratory water tank for investigating the propagation effects of a laser beam through an air-water interface. The AO system consisting of a fast steering mirror, deformable mirror, and a Shack-Hartmann Wavefront Sensor for mitigating surface water distortions has a unique way of stabilizing and aiming a laser onto an object underneath the water. Essentially the AO system mathematically takes the complex conjugate of the random phase caused by air-water interface allowing the laser beam to penetrate through the water by cancelling with the complex conjugates. The results show the improvement of a number of metrics including Strehl ratio, a measure of the quality of optical image formation for diffraction limited optical system. These are the first results demonstrating the feasibility of developing a new sensor system such as Laser Doppler Vibrometer (LDV) utilizing AO for mitigating surface water distortions. C1 [Land, Phillip; Majumdar, Arun K.] Naval Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA. RP Majumdar, AK (reprint author), Naval Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA. EM arun.majumdar@navy.mil NR 4 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 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 982703 DI 10.1117/12.2229307 PG 8 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700002 ER PT S AU Matt, S Hou, WL Goode, W Hellman, S AF Matt, Silvia Hou, Weilin Goode, Wesley Hellman, Samuel BE Hou, WW Arnone, RA TI Velocity fields and optical turbulence near the boundary in a strongly convective laboratory flow SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Optical turbulence; turbulence measurements; Rayleigh-Benard tank; numerical simulation; Particle Image Velocimetry; computational fluid dynamics; boundary layers AB Boundary layers around moving underwater vehicles or other platforms can be a limiting factor for optical communication. Turbulence in the boundary layer of a body moving through a stratified medium can lead to small variations in the index of refraction, which impede optical signals. As a first step towards investigating this boundary layer effect on underwater optics, we study the flow near the boundary in the Rayleigh-Benard laboratory tank at the Naval Research Laboratory Stennis Space Center. The tank is set up to generate temperature-driven, i.e., convective turbulence, and allows control of the turbulence intensity. This controlled turbulence environment is complemented by computational fluid dynamics simulations to visualize and quantify multi-scale flow patterns. The boundary layer dynamics in the laboratory tank are quantified using a state-of-the-art Particle Image Velocimetry (PIV) system to examine the boundary layer velocities and turbulence parameters. The velocity fields and flow dynamics from the PIV are compared to the numerical model and show the model to accurately reproduce the velocity range and flow dynamics. The temperature variations and thus optical turbulence effects can then be inferred from the model temperature data. Optical turbulence is also visible in the raw data from the PIV system. The newly collected data are consistent with previously reported measurements from high-resolution Acoustic Doppler Velocimeter profilers (Nortek Vectrino), as well as fast thermistor probes and novel next-generation fiber-optics temperature sensors. This multi-level approach to studying optical turbulence near a boundary, combining in-situ measurements, optical techniques, and numerical simulations, can provide new insight and aid in mitigating turbulence impacts on underwater optical signal transmission. C1 [Matt, Silvia; Hou, Weilin; Goode, Wesley] Naval Res Lab, Stennis Space Ctr, MS 39426 USA. [Hellman, Samuel] Dantec Dynam Inc, Holtsville, NY 11742 USA. RP Matt, S (reprint author), Naval Res Lab, Stennis Space Ctr, MS 39426 USA. EM silvia.matt@nrlssc.navy.mil NR 8 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 98270F DI 10.1117/12.2229800 PG 11 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700013 ER PT S AU Ouyang, B Hou, WL Gong, CL Caimi, FM Dalgleish, FR Vuorenkoski, AK AF Ouyang, Bing Hou, Weilin Gong, Cuiling Caimi, Frank M. Dalgleish, Fraser R. Vuorenkoski, Anni K. BE Hou, WW Arnone, RA TI Experimental Study of a DMD Based Compressive Line Sensing Imaging System in the Turbulence Environment SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Compressive sensing; DMD; imaging through turbulence AB The Compressive Line Sensing (CLS) active imaging system has been demonstrated to be effective in scattering mediums, such as turbid coastal water through simulations and test tank experiments. Since turbulence is encountered in many atmospheric and underwater surveillance applications, a new CLS imaging prototype was developed to investigate the effectiveness of the CLS concept in a turbulence environment. Compared with earlier optical bench top prototype, the new system is significantly more robust and compact. A series of experiments were conducted at the Naval Research Lab's optical turbulence test facility with the imaging path subjected to various turbulence intensities. In addition to validating the system design, we obtained some unexpected exciting results in the strong turbulence environment, the time-averaged measurements using the new CLS imaging prototype improved both SNR and resolution of the reconstructed images. We will discuss the implications of the new findings, the challenges of acquiring data through strong turbulence environment, and future enhancements. C1 [Ouyang, Bing; Caimi, Frank M.; Dalgleish, Fraser R.; Vuorenkoski, Anni K.] Florida Atlantic Univ, Oceanog Inst, Harbor Branch, 5600 US1 North, Ft Pierce, FL 34946 USA. [Hou, Weilin] Naval Res Lab, 1009 Balch Blvd, Stennis Space Ctr, MS 39529 USA. [Gong, Cuiling] Texas Christian Univ, Dept Engn, TCU BOX 298640, Ft Worth, TX 76129 USA. RP Ouyang, B (reprint author), Florida Atlantic Univ, Oceanog Inst, Harbor Branch, 5600 US1 North, Ft Pierce, FL 34946 USA. EM bouyang@hboi.fau.edu NR 16 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 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 982709 DI 10.1117/12.2229754 PG 8 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700008 ER PT S AU Redding, B Davis, A Kirkendall, C Dandridge, A AF Redding, Brandon Davis, Allen Kirkendall, Clay Dandridge, Anthony BE Hou, WW Arnone, RA TI The Influence of Underwater Turbulence on Optical Phase Measurements SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Interferometric underwater sensing; underwater turbulence AB Emerging underwater optical imaging and sensing applications rely on phase-sensitive detection to provide added functionality and improved sensitivity. However, underwater turbulence introduces spatio-temporal variations in the refractive index of water which can degrade the performance of these systems. Although the influence of turbulence on traditional, non-interferometric imaging has been investigated, its influence on the optical phase remains poorly understood. Nonetheless, a thorough understanding of the spatio-temporal dynamics of the optical phase of light passing through underwater turbulence are crucial to the design of phase-sensitive imaging and sensing systems. To address this concern, we combined underwater imaging with high speed holography to provide a calibrated characterization of the effects of turbulence on the optical phase. By measuring the modulation transfer function of an underwater imaging system, we were able to calibrate varying levels of optical turbulence intensity using the Simple Underwater Imaging Model (SUIM). We then used high speed holography to measure the temporal dynamics of the optical phase of light passing through varying levels of turbulence. Using this method, we measured the variance in the amplitude and phase of the beam, the temporal correlation of the optical phase, and recorded the turbulence induced phase noise as a function of frequency. By bench marking the effects of varying levels of turbulence on the optical phase, this work provides a basis to evaluate the real-world potential of emerging underwater interferometric sensing modalities. C1 [Redding, Brandon; Davis, Allen; Kirkendall, Clay; Dandridge, Anthony] Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Redding, B (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. EM brandon.redding@nrl.navy.mil NR 8 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 982707 DI 10.1117/12.2230203 PG 7 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700006 ER PT S AU Rumbaugh, LK Dunn, KJ Bollt, EM Cochenour, B Jemison, WD AF Rumbaugh, Luke K. Dunn, Kaitlin J. Bollt, Erik M. Cochenour, Brandon Jemison, William D. BE Hou, WW Arnone, RA TI An underwater chaotic lidar sensor based on synchronized blue laser diodes SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Underwater lidar; laser diodes; chaotic lidar; chaos; synchronized chaos AB We present a novel chaotic lidar system designed for underwater impulse response measurements. The system uses two recently introduced, low-cost, commercially available 462 nm multimode InGaN laser diodes, which are synchronized by a bi-directional optical link. This synchronization results in a noise-like chaotic intensity modulation with over 1 GHz bandwidth and strong modulation depth. An advantage of this approach is its simple transmitter architecture, which uses no electrical signal generator, electro-optic modulator, or optical frequency doubler. C1 [Rumbaugh, Luke K.; Dunn, Kaitlin J.; Jemison, William D.] Clarkson Univ, Dept Elect & Comp Engn, 8 Clarkson Ave, Potsdam, NY 13699 USA. [Bollt, Erik M.] Clarkson Univ, Dept Math, Potsdam, NY 13699 USA. [Cochenour, Brandon] Naval Air Warfare Ctr, Electroopt & Special Mission Sensors Div, 22347 Cedar Point Rd, Patuxent River, MD 20670 USA. RP Rumbaugh, LK (reprint author), Clarkson Univ, Dept Elect & Comp Engn, 8 Clarkson Ave, Potsdam, NY 13699 USA. EM rumbaulk@clarkson.edu NR 16 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 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 982701 DI 10.1117/12.2224498 PG 11 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700016 ER PT S AU Shulman, I Gould, RW Anderson, S Sakalaukus, P AF Shulman, Igor Gould, Richard W., Jr. Anderson, Stephanie Sakalaukus, Peter BE Hou, WW Arnone, RA TI SENSITIVITY OF MODELED OCEAN HEAT CONTENT TO ERRORS IN SHORT WAVE RADIATION AND ITS ATTENUATION WITH DEPTH SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Short Wave Penetration; Numerical Oceanic Modeling; Radiant Heating Rate; Coastal Oceanography AB Short wave radiation (SWR) and its attenuation with depth have a major impact on the vertical distribution of the oceanic water temperature, dynamical processes, and ocean-atmosphere interactions. In numerical modeling of oceanic processes, the SWR usually comes from the atmospheric model predictions, while the short wave attenuation schemes are internally prescribed (estimated) inside the oceanic dynamical model. It has been reported that atmospheric models show a tendency to overestimate the shortwave radiation due to underestimation of predicted low-level clouds. Most existing schemes to specify the attenuation of SWR with depth in numerical models are based on: the Jerlov (1976) water-types classification; climatological estimates of attenuation coefficients or from the biological model predictions of light-absorbing and scattering water constituents. All of the above attenuation schemes are prone to introducing errors in the attenuation of short wave radiation with depth. As a result, we have to deal with two types of errors in the oceanic modeling: those due to the incorrect specification of the magnitude of SWR at the surface (from the atmospheric model), and those due to inaccurate vertical attenuation of SWR (prescribed in the oceanic model). We have developed an approach for estimating errors in the oceanic model heat budget due to errors in surface values of SWR and in its attenuation with depth. Based on this approach, we present examples illustrating sensitivities of the heat budget of the water column to the changes in specification of surface SWR and its attenuation. C1 [Shulman, Igor; Gould, Richard W., Jr.; Anderson, Stephanie; Sakalaukus, Peter] Naval Res Lab, Div Oceanog, Stennis Space Ctr, MS 39426 USA. RP Shulman, I (reprint author), Naval Res Lab, Div Oceanog, Stennis Space Ctr, MS 39426 USA. NR 17 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 98270S DI 10.1117/12.2229251 PG 16 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700020 ER PT S AU Walters, G Kane, T Jefferies, R Antonelli, L AF Walters, Gage Kane, Tim Jefferies, Rhett Antonelli, Lynn BE Hou, WW Arnone, RA TI Statistical Characterization of the Optical Interaction at a Supercavitating Interface SO OCEAN SENSING AND MONITORING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ocean Sensing and Monitoring VIII CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE supercavitation; air/water interface; optical propagation AB The optical characteristics of an air/water interface have been widely studied for natural interface formations. However, the creation and management of artificial cavities creates a complicated interaction of gas and liquid that makes optical sensing and communication through the interface challenging. A ventilated cavity can reduce friction in underwater vehicles, but the resulting bubble drastically impedes optical and acoustic communication propagation. The complicated interaction at the air/water boundary yields surface waves and turbulence that make modeling and compensating of the optical properties difficult. Our experimental approach uses a narrow laser beam to probe the surface of the interface and measure the beam deflection and lensing effects. Using a vehicle model with a cavitator in a water tunnel, a laser beam is propagated outward from the model through the boundary and projected onto a target grid. The beam projection is captured using a high-speed camera, allowing us to measure and analyze beam shape and deflection. This approach has enabled us to quantify the temporal and spatial periodic variations in the beam propagation through the cavity boundary and fluid. C1 [Walters, Gage; Jefferies, Rhett] Penn State Univ, Appl Res Lab, University Pk, PA 16804 USA. [Kane, Tim] Penn State Univ, Sch Elect Engn & Comp Sci, University Pk, PA 16804 USA. [Antonelli, Lynn] Naval Undersea Warfare Ctr, Newport, RI 02841 USA. RP Kane, T (reprint author), Penn State Univ, Sch Elect Engn & Comp Sci, University Pk, PA 16804 USA. EM tjk7@psu.edu 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 978-1-5106-0068-3 J9 PROC SPIE PY 2016 VL 9827 AR UNSP 982704 DI 10.1117/12.2223949 PG 6 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BF6LC UT WOS:000383238700003 ER PT S AU Cai, CX Le, F Sun, X Xie, GG Jamjoom, H Campbell, RH AF Cai, Chris X. Le, Franck Sun, Xin Xie, Geoffrey G. Jamjoom, Hani Campbell, Roy H. GP IEEE TI CRONets: Cloud-Routed Overlay Networks SO PROCEEDINGS 2016 IEEE 36TH INTERNATIONAL CONFERENCE ON DISTRIBUTED COMPUTING SYSTEMS ICDCS 2016 SE IEEE International Conference on Distributed Computing Systems LA English DT Proceedings Paper CT IEEE 36th International Conference on Distributed Computing Systems (ICDCS) CY JUN 27-30, 2016 CL Nara, JAPAN SP IEEE, IEEE Comp Soc, Natl Inst information & Commun Technol, IEICE Commun Soc AB Overlay networking and ISP-assisted tunneling are effective solutions to overcome problematic BGP routes and bypass troublesome autonomous systems. Despite their demonstrated effectiveness, overlay support is not broadly available. In this paper, we propose Cloud-Routed Overlay Networks (CRONets), whereby users can readily build their own overlays using nodes from global and well-provisioned cloud providers like IBM Softlayer or Amazon EC2. While previous studies have demonstrated the benefits of overlay networks with the high-speed experimental Internet2 backbone, we are the first to evaluate the improvements in a realistic-cloud-setting. We conduct a large-scale experiment where we observe 6,600 Internet paths. The results show that CRONets improve the throughput for 78% of the default Internet paths with a median and average improvement factors of 1.67 and 3.27 times respectively, at a tenth of the cost of leasing private lines of comparable performance. We also performed a longitudinal measurement, and demonstrate that the performance gains are consistent over time with only a small number of overlay nodes needed to be deployed. However, given the size and dynamic nature of the Internet routing system (e.g., due to congestion and failures), selecting the proper path is still a challenging problem. To address it, we propose a novel solution based on the newly-introduced MPTCP extensions. Our experiments show that MPTCP can achieve the maximum observed throughput across the different overlay paths. C1 [Cai, Chris X.; Campbell, Roy H.] UIUC, Urbana, IL 61801 USA. [Le, Franck; Jamjoom, Hani] IBM Res, Yorktown Hts, NY USA. [Sun, Xin] FIU, Miami, FL USA. [Xie, Geoffrey G.] US Navy, Postgrad Sch, Monterey, CA 93943 USA. RP Cai, CX (reprint author), UIUC, Urbana, IL 61801 USA. NR 24 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1063-6927 BN 978-1-5090-1482-8 J9 INT CON DISTR COMP S PY 2016 BP 67 EP 77 DI 10.1109/ICDCS.2016.49 PG 11 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF6KS UT WOS:000383224500009 ER PT S AU Hollerman, WA Fontenot, RS Williams, S Miller, J AF Hollerman, William A. Fontenot, Ross S. Williams, Stephen Miller, John BE Pham, KD Chen, G TI Using luminescent materials as the active element for radiation sensors SO SENSORS AND SYSTEMS FOR SPACE APPLICATIONS IX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Sensors and Systems for Space Applications IX CY APR 18-19, 2016 CL Baltimore, MD SP SPIE DE luminescent materials; Birks and Black equation; half brightness fluence; proton irradiation ID PROTON-INDUCED FLUORESCENCE; EUROPIUM DIBENZOYLMETHIDE TRIETHYLAMMONIUM; TRIBOLUMINESCENT MATERIALS; SPECTROSCOPIC ANALYSIS; ZNS-MN; YAG-CE; YTTRIUM; IRRADIATION; PHOSPHORS; EMISSION AB Ionizing radiation poses a significant challenge for Earth-based defense applications as well as human and/or robotic space missions. Practical sensors based on luminescence will depend heavily upon research investigating the resistance of these materials to ionizing radiation and the ability to anneal or self-heal from damage caused by such radiation. In 1951, Birks and Black showed experimentally that the luminescent efficiency of anthracene bombarded by alphas varies with total fluence (N) as (I/I-0) = 1/(1 + AN), where I is the luminescence yield, I-0 is the initial yield, and A is a constant. The half brightness (N-1/2) is defined as the fluence that reduce the emission light yield to half and is equal to is the inverse of A. Broser and Kallmann developed a similar relationship to the Birks and Black equation for inorganic phosphors irradiated using alpha particles. From 1990 to the present, we found that the Birks and Black relation describes the reduction in light emission yield for every tested luminescent material except lead phosphate glass due to proton irradiation. These results indicate that radiation produced quenching centers compete with emission for absorbed energy. The purpose of this paper is to present results from research completed in this area over the last few years. Particular emphasis will be placed on recent measurements made on new materials such as europium tetrakis dibenzoylmethide triethylammonium (EuD(4)TEA). Results have shown that EuD(4)TEA with its relatively small N-1/2 might be a good candidate for use as a personal proton fluence sensor. C1 [Hollerman, William A.; Williams, Stephen; Miller, John] Univ Louisiana Lafayette, Dept Phys, Lafayette, LA 70503 USA. [Fontenot, Ross S.] Naval Surface Warfare Ctr Carderock Div, West Bethesda, MD 20817 USA. RP Hollerman, WA (reprint author), Univ Louisiana Lafayette, Dept Phys, Lafayette, LA 70503 USA. NR 38 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 978-1-5106-0079-9 J9 PROC SPIE PY 2016 VL 9838 AR 98380Z DI 10.1117/12.2228934 PG 12 WC Engineering, Electrical & Electronic; Optics; Physics, Applied; Imaging Science & Photographic Technology SC Engineering; Optics; Physics; Imaging Science & Photographic Technology GA BF6KP UT WOS:000383224200030 ER PT S AU Jacobs, VL AF Jacobs, Verne L. BE Shahriar, SM Scheuer, J TI Classical, semi-classical, and quantized-field descriptions of light propagation in general non-local and non-stationary dispersive and absorbing media SO SLOW LIGHT, FAST LIGHT, AND OPTO-ATOMIC PRECISION METROLOGY IX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Slow Light, Fast Light, and Opto-Atomic Precision Metrology IX CY FEB 15-18, 2016 CL San Francisco, CA SP SPIE DE Light-matter interactions; reduced density matrix; linear and non-linear electromagnetic response; pump-probe optical phenomena; quantum kinetic equations; spectral line shapes ID ELECTROMAGNETICALLY INDUCED TRANSPARENCY; DENSITY-MATRIX; RELAXATION; RADIATION; PLASMA AB Classical, semi-classical, and quantum-field descriptions for the interaction of light with matter are systematically discussed. Applications of interest include precise determinations of the linear and the non-linear electromagnetic response relevant to resonant pump-probe optical phenomena, such as electromagnetically induced transparency. In the quantum-mechanical description of matter systems, we introduce a general reduced-density-matrix framework. Time-domain (equation-of-motion) and frequency-domain (resolvent-operator) formulations are developed in a unified and self-consistent manner, using a Liouville-space operator representation. A preliminary semi-classical perturbation treatment of the electromagnetic interaction is adopted, in which the electromagnetic field is described as a classical field satisfying the Maxwell equations. Compact Liouville-space operator expressions are derived for the linear and the general (n'th order) non-linear electromagnetic-response tensors describing moving many-electron systems. The tetradic matrix elements of the Liouville-space self-energy operators, which are introduced in the time-domain and frequency-domain formulations, are evaluated for environmental collisional and radiative interactions, in order to provide explicit forms for the quantum kinetic equations and the spectral-line shape formulas. It is emphasized that a quantized-field approach is essential for a fully self-consistent quantum-mechanical description of the interacting light-matter system. C1 [Jacobs, Verne L.] Naval Res Lab, Washington, DC 20375 USA. RP Jacobs, VL (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM verne.jacobs@nrl.navy.mil NR 22 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-62841-998-6 J9 PROC SPIE PY 2016 VL 9763 AR UNSP 97631P DI 10.1117/12.2220203 PG 16 WC Optics; Physics, Applied SC Optics; Physics GA BF6LA UT WOS:000383236400022 ER PT S AU Frantz, JA Busse, LE Major, KJ Sapkota, G Poutous, MK Aggarwal, ID Sanghera, JS AF Frantz, J. A. Busse, L. E. Major, K. J. Sapkota, G. Poutous, M. K. Aggarwal, I. D. Sanghera, J. S. BE Clarkson, WA Shori, RK TI Random anti-reflection structures on large optics for high energy laser applications SO SOLID STATE LASERS XXV: TECHNOLOGY AND DEVICES SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Solid State Lasers XXV - Technology and Devices CY FEB 15-18, 2016 CL San Francisco, CA SP SPIE DE Moth eye; anti-reflective coatings; high energy laser optics; laser windows; nanostructured surfaces ID SURFACE-STRUCTURES; WINDOWS AB Random anti-reflection surface structures (rARSSs) have been shown to increase the transmission of an optical surface to > 99.9%. They are an attractive alternative to traditional thin film anti-reflection (AR) coatings for several reasons: They provide AR performance over a larger spectral and angular range, and unlike thin film coatings, they are patterned directly into the optic rather than deposited on its surface. As a result, they are not prone to delamination under thermal cycling that can occur with thin film coatings, and their laser damage thresholds can be considerably higher. In this work, an optimized reactive ion etch procedure was used to pattern rARSSs on fused silica windows, with performance optimized for high energy laser applications at 1.06 mu m. We have demonstrated scale-up of this processing technique for windows with dimension of up to 33 cm. This work represents what we believe to be the largest diameter nanostructured surface on an inorganic material. The windows have been shown to have a laser damage thresholds at 1.06 mu m of > 100 J/cm(2) -approaching those of the substrate, and approximately five times higher than those of comparable, C1 [Frantz, J. A.; Busse, L. E.; Sanghera, J. S.] Naval Res Lab, Code 5620,4555 Overlook Ave SW, Washington, DC 20375 USA. [Major, K. J.; Aggarwal, I. D.] Sotera Def Solut, 2121 Cooperat Way 400, Herndon, VA 20171 USA. [Sapkota, G.; Poutous, M. K.] Univ N Carolina, Dept Phys & Opt Sci, 9201 Univ City Blvd, Charlotte, NC 28223 USA. RP Frantz, JA (reprint author), Naval Res Lab, Code 5620,4555 Overlook Ave SW, Washington, DC 20375 USA. 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 978-1-62841-961-0 J9 PROC SPIE PY 2016 VL 9726 AR 97261T DI 10.1117/12.2211149 PG 6 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF6XP UT WOS:000383765300048 ER PT S AU Wettergren, TA Bays, MJ AF Wettergren, Thomas A. Bays, Matthew J. BE Karlsen, RE Gage, DW Shoemaker, CM Gerhart, GR TI Optimal Vehicle Planning and the Search Tour Problem SO UNMANNED SYSTEMS TECHNOLOGY XVIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Unmanned Systems Technology XVIII CY APR 20-21, 2016 CL Baltimore, MD SP SPIE DE Planning algorithms; mixed-integer linear programming; inner/outer optimization; unmanned vehicles; search and rescue; vehicle control ID HYBRID SYSTEMS; OPTIMIZATION; LOGIC AB We describe a problem of optimal planning for unmanned vehicles and illustrate two distinct procedures for its solution. The problem under consideration, which we refer to as the search tour problem, involves the determination of multi-stage plans for unmanned vehicles conducting search operations. These types of problems are important in situations where the searcher has varying performance in different regions throughout the domain due to environmental complexity. The ability to provide robust planning for unmanned systems under difficult environmental conditions is critical for their use in search operations. The problem we consider consists of searches with variable times for each of the stages, as well as an additional degree of freedom for each stage to select from one of a finite set of operational configurations. As each combination of configuration and stage time leads to a different performance level, there is a need to determine the optimal configuration of these stages. When the complexity of constraints on total time, as well as resources expended at each stage for a given configuration, are added, the problem becomes one of non-trivial search effort allocation and numerical methods of optimization are required. We show two solution approaches for this numerical optimization problem. The first solution technique is to use a mixed-integer linear programming formulation, for which commercially available solvers can find optimal solutions in a reasonable amount of time. We use this solution as a baseline and compare against a new inner/outer optimization formulation. This inner/outer optimization compares favorably to the baseline solution, but is also amenable to adaptation as the search operation progresses. Numerical examples illustrate the utility of the approach for unmanned vehicle search planning. C1 [Wettergren, Thomas A.] Naval Undersea Warfare Ctr, Newport Div, Newport, RI 02841 USA. [Bays, Matthew J.] Naval Surface Warfare Ctr, Panama City Div, Panama City, FL 32407 USA. RP Wettergren, TA (reprint author), Naval Undersea Warfare Ctr, Newport Div, Newport, RI 02841 USA. EM thomas.wettergren@navy.mil; matthew.bays@navy.mil OI Wettergren, Thomas/0000-0002-6623-8412 NR 18 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0078-2 J9 PROC SPIE PY 2016 VL 9837 AR 983703 DI 10.1117/12.2224134 PG 9 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF6KQ UT WOS:000383224300003 ER PT J AU Shey, J Rakvic, R Ngo, H Walker, O Tedesso, T Blanco, JA Fairbanks, K AF Shey, James Rakvic, Ryan Ngo, Hau Walker, Owens Tedesso, Thomas Blanco, Justin A. Fairbanks, Kevin GP IEEE TI Inferring Trimming Activity of Solid-State Drives Based on Energy Consumption SO 2016 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT IEEE International Instrumentation and Measurement Technology Conference (I2MTC) CY MAY 23-26, 2016 CL Taipei, TAIWAN SP IEEE, IEEE Instrumentat & Measurement Soc, NAR Labs, Instrumetn Technol Res Ctr, TRIOPTICS Taiwan, HsintekOptics, BASO Precis Opt Ltd, Ind Technol Res Inst, YINSH, T & U, Lumos Technol Co Ltd, Zimmerman Sci Co Ltd, CMOS Sensor Inc, arn, Keysight Technologies, Zurich Instrumetns, Samwell Testing Inc DE SSD; power consumption; modeling AB Solid-state drives (SSDs) have become pervasive in modern computing and are replacing hard disk drives in many applications. However, the mechanism by which SSDs store and modify data is intrinsically different from hard disk drives. For example, a memory location on a SSD must be erased prior to being written. The main contribution of this paper is a set of measurement and analysis techniques for inferring the behavior of a SSD by observing its power consumption. This paper measures and analyzes the energy consumption of the TRIM command for three separate SSDs. Energy and time models are derived for all three SSDs and it is shown that these models are approximately linear as a function of the size of the file being trimmed. Additionally, empirically obtained signatures are presented to identify when a TRIM command is issued to the SSD based on the observed waveform. Our findings support the hypothesis that energy and time models, as well as power signatures, differ among drive manufacturers. C1 [Shey, James; Rakvic, Ryan; Ngo, Hau; Walker, Owens; Tedesso, Thomas; Blanco, Justin A.; Fairbanks, Kevin] US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA. RP Shey, J (reprint author), US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA. EM shey@usna.edu; rakvic@usna.edu; ngo@usna.edu; owalker@usna.edu; tedesso@usna.edu; blanco@usna.edu; fairbank@usna.edu 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 978-1-4673-9220-4 PY 2016 BP 1189 EP 1194 PG 6 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BF5RF UT WOS:000382523600210 ER PT S AU Barkate, J Tsatsoulas, A Fellows, M Flachsbart, M Baylis, C Cohen, L Marks, RJ AF Barkate, Joseph Tsatsoulas, Alexander Fellows, Matthew Flachsbart, Matthew Baylis, Charles Cohen, Lawrence Marks, Robert J., II GP IEEE TI Fast, Momentum-Aided Optimization of Transmitter Amplifier Load Impedance and Input Power for Cognitive Radio Using the Power Smith Tube SO 2016 IEEE RADIO AND WIRELESS SYMPOSIUM (RWS) SE IEEE Radio and Wireless Symposium LA English DT Proceedings Paper CT IEEE Radio and Wireless Symposium (RWS) CY JAN 24-27, 2016 CL Austin, TX SP IEEE, IEEE MTT S, IEEE APS, IEEE EMB DE Power amplifiers; load-pull; nonlinear measurements; design; cognitive radio AB A fast search including momentum is used to quickly and simultaneously optimize power-amplifier load impedance and input power for the highest power-added efficiency while maintaining adjacent-channel power ratio within compliance limits. This search makes use of the recently developed Power Smith Tube, and is expected to be useful in real-time reconfigurable communications and radar transmitters, as well as for fast computer and measurement aided design of power amplifiers. Simulation and measurement results are shown to demonstrate the improved accuracy provided by adding momentum to the search. C1 [Barkate, Joseph; Tsatsoulas, Alexander; Fellows, Matthew; Flachsbart, Matthew; Baylis, Charles; Marks, Robert J., II] Baylor Univ, Waco, TX 76798 USA. [Cohen, Lawrence] US Naval Res Lab, Div Radar, Washington, DC USA. RP Barkate, J (reprint author), Baylor Univ, Waco, TX 76798 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 2164-2958 BN 978-1-4673-9806-0 J9 IEEE RADIO WIRELESS PY 2016 BP 54 EP 56 PG 3 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BF5KL UT WOS:000382152600018 ER PT S AU Cheu, A Morys, MM Anderson, CR Durgin, GD AF Cheu, Alex Morys, Marcin M. Anderson, Christopher R. Durgin, Gregory D. GP IEEE TI RF Propagation Through Vegetation with Time-Varying Moisture SO 2016 IEEE RADIO AND WIRELESS SYMPOSIUM (RWS) SE IEEE Radio and Wireless Symposium LA English DT Proceedings Paper CT IEEE Radio and Wireless Symposium (RWS) CY JAN 24-27, 2016 CL Austin, TX SP IEEE, IEEE MTT S, IEEE APS, IEEE EMB AB Six broadband measurements were made of the transmission at 3-4 GHz between two horn antennas 30 cm above the ground through 80 cm tall grass. Water was sprayed over the tall grass, and the variation in transmission was captured as the water evaporated. The results show an increase in transmission through the wet grass of 6.5 dB at an 8 m distance. This partially supports our hypothesis that moistened grass may act as a dielectric waveguide for ground-based wireless devices and sensors. The results not only provide a working model for predicting path loss for ground-based radio sensors, but suggest a potential method for wireless sensing of bulk moisture content in vegetation. C1 [Cheu, Alex; Morys, Marcin M.; Durgin, Gregory D.] Georgia Inst Technol, 777 Atlantic Dr, Atlanta, GA 30332 USA. [Anderson, Christopher R.] US Naval Acad, 105 Maryland Ave, Annapolis, MD 21402 USA. RP Cheu, A (reprint author), Georgia Inst Technol, 777 Atlantic Dr, Atlanta, GA 30332 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 2164-2958 BN 978-1-4673-9806-0 J9 IEEE RADIO WIRELESS PY 2016 BP 73 EP 75 PG 3 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BF5KL UT WOS:000382152600024 ER PT S AU Eustice, D Baylis, C Cohen, L Marks, RJ AF Eustice, Dylan Baylis, Charles Cohen, Lawrence Marks, Robert J., II GP IEEE TI Waveform Synthesis via Alternating Projections with Ambiguity Function, Peak-to-Average Power Ratio, and Spectrum Requirements SO 2016 IEEE RADIO AND WIRELESS SYMPOSIUM (RWS) SE IEEE Radio and Wireless Symposium LA English DT Proceedings Paper CT IEEE Radio and Wireless Symposium (RWS) CY JAN 24-27, 2016 CL Austin, TX SP IEEE, IEEE MTT S, IEEE APS, IEEE EMB DE Ambiguity function; radar waveform design; alternating projections AB A method is presented which synthesizes a radar waveform with desirable ambiguity function properties, while simultaneously meeting user-specified requirements on the waveform's peak-to-average power ratio (PAPR) and spectrum. The result is a radar waveform optimization providing desired range-Doppler resolution, spectral compliance, and power efficiency capability. The waveforms are generated via projection and are not constrained to any set of basis functions. A brief overview of the projection process is given, as well as the outline for the methodology to ensuring PAPR and spectral compliance. Simulation and measurement results show successful operation of the approach. C1 [Eustice, Dylan; Baylis, Charles; Marks, Robert J., II] Baylor Univ, Wireless & Microwave Circuits & Syst Program, Waco, TX 76798 USA. [Cohen, Lawrence] US Naval Res Lab, Radar Div, Washington, DC USA. RP Eustice, D (reprint author), Baylor Univ, Wireless & Microwave Circuits & Syst Program, Waco, TX 76798 USA. 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 2164-2958 BN 978-1-4673-9806-0 J9 IEEE RADIO WIRELESS PY 2016 BP 190 EP 192 PG 3 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BF5KL UT WOS:000382152600053 ER PT S AU Fellows, M Rezayat, S Barlow, J Barkate, J Tsatsoulas, A Baylis, C Cohen, L Marks, RJ AF Fellows, Matthew Rezayat, Sarvin Barlow, Jennifer Barkate, Joseph Tsatsoulas, Alexander Baylis, Charles Cohen, Lawrence Marks, Robert J., II GP IEEE TI The Bias Smith Tube: Simultaneous Optimization of Bias Voltage and Load Impedance in Power Amplifier Design SO 2016 IEEE RADIO AND WIRELESS SYMPOSIUM (RWS) SE IEEE Radio and Wireless Symposium LA English DT Proceedings Paper CT IEEE Radio and Wireless Symposium (RWS) CY JAN 24-27, 2016 CL Austin, TX SP IEEE, IEEE MTT S, IEEE APS, IEEE EMB DE Power amplifiers; load-pull; nonlinear measurements; design ID HIGH-EFFICIENCY; LINEARITY AB Multiple factors must he considered in power amplifier design for wireless communications and radar, including bias voltage, input power, and load impedance. The Bias Smith Tube is presented as a three-dimensional extension of the Smith Chart with bias voltage as the vertical axis. It allows simultaneous visualization of nonlinear output characteristic behaviors over transistor bias voltage and load reflection coefficient. Simulated and measured threedimensional surfaces of constant power-added efficiency (PAE), adjacent channel power ratio (ACPR), and delivered power are shown in the Bias Smith Tube, and a design approach is illustrated that finds the combination of load impedance and bias voltage providing maximum PAE under ACPR and/or delivered power constraints. C1 [Fellows, Matthew; Rezayat, Sarvin; Barlow, Jennifer; Barkate, Joseph; Tsatsoulas, Alexander; Baylis, Charles; Marks, Robert J., II] Baylor Univ, Wireless & Microwave Circuits & Syst Program, Waco, TX 76798 USA. [Cohen, Lawrence] US Naval Res Lab, Radar Div, Washington, DC USA. RP Fellows, M (reprint author), Baylor Univ, Wireless & Microwave Circuits & Syst Program, Waco, TX 76798 USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2164-2958 BN 978-1-4673-9806-0 J9 IEEE RADIO WIRELESS PY 2016 BP 215 EP 218 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BF5KL UT WOS:000382152600060 ER PT J AU Li, D Zhang, L Liu, ZQ Wu, ZQ Zhang, ZP AF Li, Dong Zhang, Lin Liu, Zhiqiang Wu, Zhiqiang Zhang, Zhiping GP IEEE TI Mixed Signal Detection and Carrier Frequency Estimation based on Spectral Coherent Features SO 2016 INTERNATIONAL CONFERENCE ON COMPUTING, NETWORKING AND COMMUNICATIONS (ICNC) LA English DT Proceedings Paper CT International Conference on Computing, Networking and Communications (ICNC) CY FEB 15-18, 2016 CL Kauai, HI SP IEEE, IEEE Comp Soc ID SD-SMSE FRAMEWORK; COGNITIVE RADIO; THEORETICAL FRAMEWORK; MODULATED SIGNALS AB Signal detection and RF parameter estimation have received strong interest in recent years due to the need of spectrum sensing in rapidly growing cognitive radio network research. In most of existing work, the target signal is often assumed to be a single primary user signal without overlap in spectrum with other signals. However, in a spectrally congested environment such as cognitive radio network, or in a spectrally contested environment such as a battlefield, multiple signals are often mixed together with significant overlap in spectrum. In our previous work, we have demonstrated the feasibility of using second order spectrum correlation function (SCF) cyclostationary feature to perform mixed signal detection. In this paper, we extend our work to employ a robust algorithm to detect mixed signals and estimate their carrier frequencies via spectral coherence function (SOF) features. We also evaluate the detection and estimation performances of the proposed algorithm in various channel conditions and signal mixture scenarios. Simulation results confirm the effectiveness of the proposed scheme. C1 [Li, Dong; Wu, Zhiqiang; Zhang, Zhiping] Wright State Univ, Dept Elect Engn, Dayton, OH 45435 USA. [Zhang, Lin] Sun Yat Sen Univ, Sch Informat Sci & Technol, Guangzhou, Guangdong, Peoples R China. [Liu, Zhiqiang] US Navy, Res Lab, Acoust Div, Washington, DC USA. RP Li, D (reprint author), Wright State Univ, Dept Elect Engn, Dayton, OH 45435 USA. EM Zhang.176@wright.edu 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 978-1-4673-8579-4 PY 2016 PG 5 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA BF5KF UT WOS:000382143300111 ER PT S AU Metcalf, JP Olsen, RC AF Metcalf, Jeremy P. Olsen, Richard C. BE Zalameda, JN Bison, P TI Evaluation of terrestrial photogrammetric point clouds derived from thermal imagery SO THERMOSENSE: THERMAL INFRARED APPLICATIONS XXXVIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Thermosense - Thermal Infrared Applications XXXVIII CY APR 18-21, 2016 CL Baltimore, MD SP SPIE, FLIR Syst Inc, IRCameras LLC DE Thermal imaging; MWIR; photogrammetry; computer vision; point cloud AB Computer vision and photogrammetric techniques have been widely applied to digital imagery producing high density 3D point clouds. Using thermal imagery as input, the same techniques can be applied to infrared data to produce point clouds in 3D space, providing surface temperature information. The work presented here is an evaluation of the accuracy of 3D reconstruction of point clouds produced using thermal imagery. An urban scene was imaged over an area at the Naval Postgraduate School, Monterey, CA, viewing from above as with an airborne system. Terrestrial thermal and RGB imagery were collected from a rooftop overlooking the site using a FLIR SC8200 MWIR camera and a Canon T1i DSLR. In order to spatially align each dataset, ground control points were placed throughout the study area using Trimble R10 GNSS receivers operating in RTK mode. Each image dataset is processed to produce a dense point cloud for 3D evaluation. C1 [Metcalf, Jeremy P.; Olsen, Richard C.] Naval Postgrad Sch, 833 Dyer Rd, Monterey, CA 93943 USA. RP Metcalf, JP (reprint author), Naval Postgrad Sch, 833 Dyer Rd, Monterey, CA 93943 USA. 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 978-1-5106-0102-4 J9 PROC SPIE PY 2016 VL 9861 AR UNSP 986119 DI 10.1117/12.2224406 PG 7 WC Optics; Physics, Applied SC Optics; Physics GA BF6DU UT WOS:000382994300038 ER PT S AU Phoenix, A Bales, D Sarlo, R Pham, T Tarazaga, PA AF Phoenix, Austin Bales, Dustin Sarlo, Rodrigo Thanh Pham Tarazaga, Pablo A. BE Mains, M TI Optimal Parameter Identification for Model Correlation Using Model Reduction Methods SO TOPICS IN MODAL ANALYSIS & TESTING, VOL 10 SE Conference Proceedings of the Society for Experimental Mechanics Series LA English DT Proceedings Paper CT 34th IMAC Conference and Exposition on Structural Dynamics CY JAN 25-28, 2016 CL Orlando, FL SP Soc Experimental Mech DE Model reduction; Model correlation; Discrete empirical interpolation method (DEIM); Dime; Finite element analysis AB Classically, to achieve correlation between a dynamic test and a Finite Element Model (FEM), an experienced engineer chooses a small subset of input parameters and uses a model updating technique or engineering judgment to update the parameters until the error between the FEM and the test article is acceptable. To reduce the intricacy and difficulty of model correlation, model reduction methods such as the Discrete Empirical Interpolation Method (DEIM), and dime are implemented to reduce the scale of the problem by reducing the number of FEM parameters to its most critical ones. These model reduction methods serve to identify the critical parameters required to develop an accurate model with reduced engineering effort and computational resources. The insight gained using these methods is critical to develop an optimal, reduced parameter set that provides high correlation with minimal iterative costs. This can be seen as a particular approach to sensitivity analysis in the model updating community. The parameter set rankings derived from each method are evaluated by correlating each parameter set on five simulated test geometries. The methodology presented highlights the most valuable parameters for correlation, enabling a straightforward and computationally efficient model correlation approach. C1 [Phoenix, Austin; Thanh Pham] US Naval Res Lab, Naval Ctr Space Technol, Washington, DC 20375 USA. [Bales, Dustin; Sarlo, Rodrigo; Tarazaga, Pablo A.] Virginia Tech, Vibrat Adapt Struct & Testing Lab, 310 Goodwin Hall, Blacksburg, VA 24060 USA. RP Phoenix, A (reprint author), US Naval Res Lab, Naval Ctr Space Technol, Washington, DC 20375 USA. EM aphoenix@vt.edu NR 14 TC 0 Z9 0 U1 4 U2 4 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 2191-5644 BN 978-3-319-30249-2; 978-3-319-30248-5 J9 C PROC SOC EXP MECH PY 2016 BP 281 EP 292 DI 10.1007/978-3-319-30249-2_25 PG 12 WC Engineering, Mechanical SC Engineering GA BF5GK UT WOS:000381976700025 ER PT S AU Fontenot, RS Mathur, VK Barkyoumb, JH Mungan, CE Tran, TN AF Fontenot, Ross S. Mathur, Veerendra K. Barkyoumb, John H. Mungan, Carl E. Tran, Thanh N. BE Epstein, RI Andresen, BF Hehlen, MP Heremans, JP Ruhlich, IN SheikBahae, M TI Measuring the anti-Stokes luminescence of CdSe/ZnS quantum dots for laser cooling applications SO TRI-TECHNOLOGY DEVICE REFRIGERATION (TTDR) SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Tri-Technology Device Refrigeration (TTDR) CY APR 19-20, 2016 CL Baltimore, MD SP SPIE DE Optical cooling; optical refrigeration; nanomaterial applications; laser cooling of solids ID CORE/SHELL NANOCRYSTALS; EPITAXIAL-GROWTH; REFRIGERATION; RADIATION AB The first demonstration of laser cooling of solids was of an ytterbium doped fluorozirconate glass. While this groundbreaking work successfully showed that it is possible to cool solids using laser cooling, rare-earth materials are governed by Boltzmann statistics limiting their cooling ability to about 100 K. Direct-bandgap semiconductors, on the other hand, are governed by Fermi-Dirac statistics, which allows for a theoretical cooling limit of 10 K as well as higher cooling efficiencies. Recently, it was demonstrated that it is possible to cool CdS nanoribbons by 40 K. That success was attributed to CdS strong electron-phonon coupling, which makes it possible to resonantly annihilate more than one longitudinal optical phonon during each up conversion cycle. To further increase the cooling power, large external quantum efficiency is required. A nanostructure is preferred because it creates confined excitons of tunable wavelength and reduces the self-absorption of the anti-Stokes fluorescence owing to the shorter path length for photons to escape the crystal. However, organically passivated quantum dots have a low quantum yield due to surface related trap states. A core-shell nanostructure alleviates this problem by passivating the surface trap states and protecting against environmental changes and photo-oxidative degradation. As such, we chose to investigate CdSe/ZnS core shell structure for laser cooling applications. This article highlights the measurement of the anti-Stokes luminescence, the dependence of the laser wavelength on the anti-Stokes emission of colloidal quantum dots, and the successful incorporation of CdSe/ZnS into polymers. C1 [Fontenot, Ross S.; Mathur, Veerendra K.; Barkyoumb, John H.; Tran, Thanh N.] Naval Surface Warfare Ctr, Carderock Div, 9500 MacArthur Blvd, West Bethesda, MD 20817 USA. [Mungan, Carl E.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA. RP Fontenot, RS (reprint author), Naval Surface Warfare Ctr, Carderock Div, 9500 MacArthur Blvd, West Bethesda, MD 20817 USA. NR 23 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 978-1-5106-0062-1 J9 PROC SPIE PY 2016 VL 9821 AR UNSP 982103 DI 10.1117/12.2222826 PG 7 WC Optics SC Optics GA BF6KZ UT WOS:000383235900001 ER PT J AU Barlow, DE Biffinger, JC Cockrell-Zugell, AL Lo, M Kjoller, K Cook, D Lee, WK Pehrsson, PE Crookes-Goodson, WJ Hung, CS Nadeau, LJ Russell, JN AF Barlow, Daniel E. Biffinger, Justin C. Cockrell-Zugell, Allison L. Lo, Michael Kjoller, Kevin Cook, Debra Lee, Woo Kyung Pehrsson, Pehr E. Crookes-Goodson, Wendy J. Hung, Chia-Suei Nadeau, Lloyd J. Russell, John N., Jr. TI The importance of correcting for variable probe-sample interactions in AFM-IR spectroscopy: AFM-IR of dried bacteria on a polyurethane film SO ANALYST LA English DT Article ID ATOMIC-FORCE MICROSCOPY; DIFFRACTION LIMIT; SPECTROMICROSCOPY; RESPONSES; SURFACES; BIOFILMS; COATINGS AB AFM-IR is a combined atomic force microscopy-infrared spectroscopy method that shows promise for nanoscale chemical characterization of biological-materials interactions. In an effort to apply this method to quantitatively probe mechanisms of microbiologically induced polyurethane degradation, we have investigated monolayer clusters of similar to 200 nm thick Pseudomonas protegens Pf-5 bacteria (Pf) on a 300 nm thick polyether-polyurethane (PU) film. Here, the impact of the different biological and polymer mechanical properties on the thermomechanical AFM-IR detection mechanism was first assessed without the additional complication of polymer degradation. AFM-IR spectra of Pf and PU were compared with FTIR and showed good agreement. Local AFM-IR spectra of Pf on PU (Pf-PU) exhibited bands from both constituents, showing that AFM-IR is sensitive to chemical composition both at and below the surface. One distinct difference in local AFM-IR spectra on Pf-PU was an anomalous similar to 4x increase in IR peak intensities for the probe in contact with Pf versus PU. This was attributed to differences in probe-sample interactions. In particular, significantly higher cantilever damping was observed for probe contact with PU, with a similar to 10x smaller Q factor. AFM-IR chemical mapping at single wavelengths was also affected. We demonstrate ratioing of mapping data for chemical analysis as a simple method to cancel the extreme effects of the variable probe-sample interactions. C1 [Barlow, Daniel E.; Biffinger, Justin C.; Lee, Woo Kyung; Pehrsson, Pehr E.; Russell, John N., Jr.] Naval Res Lab, Div Chem, Washington, DC 20375 USA. [Cockrell-Zugell, Allison L.] CNR, Postdoctoral Res Associate, Washington, DC 20001 USA. [Lo, Michael; Kjoller, Kevin; Cook, Debra] Anasys Instruments Inc, Santa Barbara, CA USA. [Crookes-Goodson, Wendy J.; Hung, Chia-Suei; Nadeau, Lloyd J.] Air Force Res Lab, Mat & Mfg Directorate, Soft Matter Mat Branch, Wright Patterson AFB, OH 45433 USA. RP Barlow, DE (reprint author), Naval Res Lab, Div Chem, Washington, DC 20375 USA. EM daniel.barlow@nrl.navy.mil FU Air Force Office of Scientific Research [12RX14COR] FX We thank Kathryn Wahl (NRL) for helpful comments and critical review of the manuscript. This work was supported by the Air Force Office of Scientific Research under award number 12RX14COR. NR 28 TC 0 Z9 0 U1 6 U2 6 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 0003-2654 EI 1364-5528 J9 ANALYST JI Analyst PY 2016 VL 141 IS 16 BP 4848 EP 4854 DI 10.1039/c6an00940a PG 7 WC Chemistry, Analytical SC Chemistry GA DT3XF UT WOS:000381413800003 PM 27403761 ER PT J AU Allen, DR Hoppel, K Kuhl, DD AF Allen, Douglas R. Hoppel, Karlw. Kuhl, David D. TI Hybrid ensemble 4DVar assimilation of stratospheric ozone using a global shallow water model SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID VARIATIONAL DATA ASSIMILATION; CHEMICAL-CONSTITUENT OBSERVATIONS; EXTENDED KALMAN FILTER; 4D-VAR ASSIMILATION; WIND EXTRACTION; WEATHER-PREDICTION; NAVDAS-AR; IMPLEMENTATION; FORMULATION; SYSTEMS AB Wind extraction from stratospheric ozone (O-3) assimilation is examined using a hybrid ensemble 4-D variational assimilation (4DVar) shallow water model (SWM) system coupled to the tracer advection equation. Stratospheric radiance observations are simulated using global observations of the SWM fluid height (Z), while O-3 observations represent sampling by a typical polar-orbiting satellite. Four ensemble sizes were examined (25, 50, 100, and 1518 members), with the largest ensemble equal to the number of dynamical state variables. The optimal length scale for ensemble localization was found by tuning an ensemble Kalman filter (EnKF). This scale was then used for localizing the ensemble covariances that were blended with conventional covariances in the hybrid 4DVar experiments. Both optimal length scale and optimal blending coefficient increase with ensemble size, with optimal blending coefficients varying from 0.2-0.5 for small ensembles to 0.5-1.0 for large ensembles. The hybrid system outperforms conventional 4DVar for all ensemble sizes, while for large ensembles the hybrid produces similar results to the offline EnKF. Assimilating O-3 in addition to Z benefits the winds in the hybrid system, with the fractional improvement in global vector wind increasing from similar to 35% with 25 and 50 members to similar to 50% with 1518 members. For the smallest ensembles (25 and 50 members), the hybrid 4DVar assimilation improves the zonal wind analysis over conventional 4DVar in the Northern Hemisphere (winter-like) region and also at the Equator, where Z observations alone have difficulty constraining winds due to lack of geostrophy. For larger ensembles (100 and 1518 members), the hybrid system results in both zonal and meridional wind error reductions, relative to 4DVar, across the globe. C1 [Allen, Douglas R.; Hoppel, Karlw.; Kuhl, David D.] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. RP Allen, DR (reprint author), Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA. EM douglas.allen@nrl.navy.mil FU Office of Naval Research [BE-033-02-42, BE-435-050] FX We would like to thank Thomas Milewski, one anonymous referee, and the editor for helpful comments on the manuscript. Douglas R. Allen and Karl W. Hoppel acknowledge support from Office of Naval Research base funding via Task BE-033-02-42. David D. Kuhl and Karl W. Hoppel acknowledge support from Office of Naval Research base funding via Task BE-435-050. NR 33 TC 1 Z9 1 U1 3 U2 3 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 2016 VL 16 IS 13 BP 8193 EP 8204 DI 10.5194/acp-16-8193-2016 PG 12 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA DS9GQ UT WOS:000381091400009 ER PT J AU Freismuth, TM Rutherford, B Boothe, MA Montgomery, MT AF Freismuth, Thomas M. Rutherford, Blake Boothe, Mark A. Montgomery, Michael T. TI Why did the storm ex-Gaston (2010) fail to redevelop during the PREDICT experiment? SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID WAVE CRITICAL LAYER; TCS-08 FIELD EXPERIMENT; TROPICAL CYCLOGENESIS; TYPHOON NURI; GENESIS; VORTICITY; EVOLUTION; SIMULATIONS; DYNAMICS; CYCLONES AB An analysis is presented of the failed redevelopment of ex-Gaston during the 2010 PREDICT field campaign based on the European Centre for Medium Range Weather Forecast (ECMWF) analyses. We analyze the dynamics and kinematics of ex-Gaston to investigate the role of dry, environmental air in the failed redevelopment. The flow topology defined by the calculation of particle trajectories shows that ex-Gaston's pouch was vulnerable to dry, environmental air on all days of observations. As early as 12: 00 UTC 2 September 2010, a dry layer at and above 600 hPa results in a decrease in the vertical mass flux and vertical relative vorticity. These findings support the hypothesis that entrained, dry air near 600 hPa thwarted convective updraughts and vertical mass flux, which in turn led to a reduction in vorticity and a compromised pouch at these middle levels. A compromised pouch allows further intrusion of dry air and quenching of subsequent convection, therefore hindering vorticity amplification through vortex tube stretching. This study supports recent work investigating the role of dry air in moist convection during tropical cyclogenesis. C1 [Freismuth, Thomas M.; Boothe, Mark A.; Montgomery, Michael T.] Naval Postgrad Sch, Monterey, CA USA. [Rutherford, Blake] Northwest Res Associates, Redmond, WA USA. RP Montgomery, MT (reprint author), Naval Postgrad Sch, Monterey, CA USA. EM mtmontgo@nps.edu FU NSF [AGS-1432983, AGS-1313948]; NOAA HFIP grant [N0017315WR00048]; NASA [NNG11PK021]; US Naval Postgraduate School FX T. M. Freismuth acknowledges OPNAV N2/N6, CNMOC, and valuable discussions with Gerard Kilroy and Tim Dunkerton. B. Rutherford acknowledges the support of NSF AGS-1432983. M. T. Montgomery acknowledges the support of NSF AGS-1313948, NOAA HFIP grant N0017315WR00048, NASA grant NNG11PK021 and the US Naval Postgraduate School. ECMWF data provided by Peter Bauer at ECMWF, Gerald Thomsen, and Gerard Kilroy and Roger Smith from the Ludwig Maximilian University of Munich and the Deutscher Wetterdienst. The views expressed herein are those of the authors and do not represent sponsoring agencies or institutions. NR 25 TC 0 Z9 0 U1 1 U2 1 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 2016 VL 16 IS 13 BP 8511 EP 8519 DI 10.5194/acp-16-8511-2016 PG 9 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA DS9GQ UT WOS:000381091400029 ER PT J AU Jung, E Albrecht, BA Feingold, G Jonsson, HH Chuang, P Donaher, SL AF Jung, Eunsil Albrecht, Bruce A. Feingold, Graham Jonsson, Haflidi H. Chuang, Patrick Donaher, Shaunna L. TI Aerosols, clouds, and precipitation in the North Atlantic trades observed during the Barbados aerosol cloud experiment - Part 1: Distributions and variability SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID CONDENSATION NUCLEI; SHALLOW CUMULUS; BOUNDARY-LAYER; WIND CUMULUS; OCEAN; STRATOCUMULUS; MICROPHYSICS; SIMULATIONS; ENERGY; RADAR AB Shallow marine cumulus clouds are by far the most frequently observed cloud type over the Earth's oceans; but they are poorly understood and have not been investigated as extensively as stratocumulus clouds. This study describes and discusses the properties and variations of aerosol, cloud, and precipitation associated with shallow marine cumulus clouds observed in the North Atlantic trades during a field campaign (Barbados Aerosol Cloud Experiment-BACEX, March-April 2010), which took place off Barbados where African dust periodically affects the region. The principal observing platform was the Center for Interdisciplinary Remotely Piloted Aircraft Studies (CIRPAS) Twin Otter (TO) research aircraft, which was equipped with standard meteorological instruments, a zenith pointing cloud radar and probes that measured aerosol, cloud, and precipitation characteristics. The temporal variation and vertical distribution of aerosols observed from the 15 flights, which included the most intense African dust event during all of 2010 in Barbados, showed a wide range of aerosol conditions. During dusty periods, aerosol concentrations increased substantially in the size range between 0.5 and 10 mu m (diameter), particles that are large enough to be effective giant cloud condensation nuclei (CCN). The 10-day back trajectories showed three distinct air masses with distinct vertical structures associated with air masses originating in the Atlantic (typical maritime air mass with relatively low aerosol concentrations in the marine boundary layer), Africa (Saharan air layer), and midlatitudes (continental pollution plumes). Despite the large differences in the total mass loading and the origin of the aerosols, the overall shapes of the aerosol particle size distributions were consistent, with the exception of the transition period. The TO was able to sample many clouds at various phases of growth. Maximum cloud depth observed was less than similar to 3 km, while most clouds were less than 1 km deep. Clouds tend to precipitate when the cloud is thicker than 500-600 m. Distributions of cloud field characteristics (depth, radar reflectivity, Doppler velocity, precipitation) were well identified in the reflectivity-velocity diagram from the cloud radar observations. Two types of precipitation features were observed for shallow marine cumulus clouds that may impact boundary layer differently: first, a classic cloud-base precipitation where precipitation shafts were observed to emanate from the cloud base; second, cloud-top precipitation where precipitation shafts emanated mainly near the cloud tops, sometimes accompanied by precipitation near the cloud base. The second type of precipitation was more frequently observed during the experiment. Only 42-44% of the clouds sampled were non-precipitating throughout the entire cloud layer and the rest of the clouds showed precipitation somewhere in the cloud, predominantly closer to the cloud top. C1 [Jung, Eunsil; Albrecht, Bruce A.] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Dept Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA. [Feingold, Graham] NOAA, ESRL, Boulder, CO 80305 USA. [Jonsson, Haflidi H.] Naval Postgrad Sch, Monterey, CA 93943 USA. [Chuang, Patrick] Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA. [Donaher, Shaunna L.] Emory Univ, Dept Environm Sci, Atlanta, GA 30322 USA. RP Jung, E (reprint author), Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Dept Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA. EM eunsil.jung@gmail.com RI Manager, CSD Publications/B-2789-2015 FU ONR [N000140810465]; NOAA's Climate Goal FX We thank all individuals who made the observations on the CIRPAS Twin Otter during BACEX. We thank Joseph M. Prospero (University of Miami) for providing dust surface data and he and his staff for establishing and maintaining the Ragged Point AERONET sites used in this investigation. Jung and Albrecht are funded by ONR Grant N000140810465. Feingold acknowledges support from NOAA's Climate Goal. Eunsil Jung thanks Robert Seigel (publiscize.com) for scrutinizing an early stage of the manuscript. We thank two anonymous reviewers for their constructive and comprehensive comments on the manuscript. NR 46 TC 2 Z9 2 U1 8 U2 8 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 2016 VL 16 IS 13 BP 8643 EP 8666 DI 10.5194/acp-16-8643-2016 PG 24 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA DS9GQ UT WOS:000381091400037 ER PT J AU Donakowski, MD Wallace, JM Sassin, MB Chapman, KW Parker, JF Long, JW Rolison, DR AF Donakowski, Martin D. Wallace, Jean M. Sassin, Megan B. Chapman, Karena W. Parker, Joseph F. Long, Jeffrey W. Rolison, Debra R. TI Crystal engineering in 3D: converting nanoscale lamellar manganese oxide to cubic spinel while affixed to a carbon architecture SO CRYSTENGCOMM LA English DT Article ID PAIR DISTRIBUTION FUNCTION; LOCAL ATOMIC-STRUCTURE; LITHIUM-ION BATTERIES; X-RAY-DIFFRACTION; SOLID-STATE NMR; ELECTROLESS DEPOSITION; CATHODE MATERIAL; NANOTUBES; NANOARCHITECTURES; FILMS AB By applying differential pair distribution function (DPDF) analyses to the energy-storage relevant MnOx/carbon system-but in a 3D architectural rather than powder-composite configuration-we can remove contributions of the carbon nanofoam paper scaffold and quantify the multiphasic oxide speciation as the nanoscale, disordered MnOx grafted to the carbon walls (MnOx@CNF) structurally rearranges in situ from disordered birnessite AMnOx (A = Na+; Li+) to tetragonal Mn3O4 to spinel LiMn2O4. The first reaction step involves topotactic exchange of interlayer Na+ by Li+ in solution followed by thermal treatments to crystal engineer the similar to 10 nm-thick 2D layered oxide throughout the macroscale nanofoam paper into a cubic phase. The oxide remains affixed to the walls of the nanofoam throughout the phase transformations. The DPDF fits are improved by retention of one plane of birnessite-like oxide after conversion to spinel. We support the DPDF-derived assignments by X-ray photoelectron spectroscopy and Raman spectroscopy, the latter of which tracks how crystal engineering the oxide affects the disorder of the carbon substrate. We further benchmark MnOx@CNF with nonaqueous electrochemical measurements versus lithium as the oxide converts from X-ray-amorphous birnessite to interlayer-registered LiMnOx to spinel. The lamellar AMnOx displays pseudocapacitive electrochemical behavior, with a doubling of specific capacitance for the interlayer-registered LiMnOx, while the spinel LiMn2O4@CNF displays a faradaic electrochemical response characteristic of Li-ion insertion. Our results highlight the need for holistic understanding when crystal engineering an (atomistic) charge-storing phase within the (architectural) structure of practical electrodes. C1 [Donakowski, Martin D.] CNR, Washington, DC USA. [Donakowski, Martin D.; Wallace, Jean M.; Sassin, Megan B.; Parker, Joseph F.; Long, Jeffrey W.; Rolison, Debra R.] US Naval Res Lab, Surface Chem Branch Code 6170, Washington, DC 20375 USA. [Wallace, Jean M.] Nova Res Inc, 1900 Elkin St, Alexandria, VA 22308 USA. [Chapman, Karena W.] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA. RP Rolison, DR (reprint author), US Naval Res Lab, Surface Chem Branch Code 6170, Washington, DC 20375 USA. EM rolison@nrl.navy.mil FU U.S. Office of Naval Research; National Research Council; DOE Office of Science [DE-AC02-06CH11357] FX This work was supported by the U.S. Office of Naval Research. M. D. D. acknowledges the National Research Council for a Postdoctoral Fellowship (2014-2017). This research used resources of the Advanced Photon Source (APS), a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The PDF experiments were conducted at 11-ID-B of the APS. A synchrotron PXRD pattern was obtained via the mail-in program at 11-BM of the APS. We thank Dr. Mikhail Feygenson (Oak Ridge National Laboratory) and the 11-ID-B/NOMAD partner program for initial data collection of pair distribution function data. NR 54 TC 1 Z9 1 U1 7 U2 7 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1466-8033 J9 CRYSTENGCOMM JI Crystengcomm PY 2016 VL 18 IS 32 BP 6035 EP 6048 DI 10.1039/c6ce00861e PG 14 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA DT4EI UT WOS:000381432500010 ER PT J AU Chand, D He, CL Mitchell, LA Parrish, DA Shreeve, JM AF Chand, Deepak He, Chunlin Mitchell, Lauren A. Parrish, Damon A. Shreeve, Jean'ne M. TI Electrophilic iodination: a gateway to high iodine compounds and energetic materials SO DALTON TRANSACTIONS LA English DT Article ID HIGH-DENSITY; SALTS; DERIVATIVES; PYRAZOLES AB A large number of iodine atoms can be introduced into a single molecule in a one-pot reaction using trifluoroperacetic acid-mediated electrophilic iodination methodology. The scope of this reaction was investigated extensively using several pyrazole substrates which resulted in nine polyiodo pyrazole compounds with iodine content as high as 80%. This synthetic methodology was also utilized successfully for iodination of benzimidazoles. Tetraiodobenzimidazole was nitrated with 100% nitric acid to give a high yield of 4,5,6,7-tetranitro-1H-benzimidazol-2(3H)-one (14). All of these materials were fully characterized and compounds 5, 9, 10 and 14 were confirmed further with single crystal X-ray analysis. High density, positive oxygen balance, and very good impact sensitivity values characterize 14. For the first time, two 1,2,5-oxadiazole-N-oxide rings were introduced into a benzimidazole ring (11) which remarkably improves the stability of oxadiazole-N-oxide compounds. C1 [Chand, Deepak; He, Chunlin; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA. [Mitchell, Lauren A.] Univ Minnesota, Dept Chem, 207 Pleasant St SE, Minneapolis, MN 55455 USA. [Parrish, Damon A.] Naval Res Lab, Code 6030, Washington, DC 20375 USA. RP Shreeve, JM (reprint author), Univ Idaho, Dept Chem, Moscow, ID 83844 USA. EM jshreeve@uidaho.edu OI Mitchell, Lauren/0000-0002-1311-0108 FU ONR [N00014-16-1-2089]; Defense Threat Reduction Agency [HDTRA 1-15-1-0028] FX The authors are grateful for the support of ONR (N00014-16-1-2089), and the Defense Threat Reduction Agency (HDTRA 1-15-1-0028). We deeply appreciate the help of Dr Jerry Boatz, Air Force Research Laboratory, Edwards Airforce Base, CA for the calculation of the heat of formation for 14. NR 36 TC 1 Z9 1 U1 6 U2 6 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1477-9226 EI 1477-9234 J9 DALTON T JI Dalton Trans. PY 2016 VL 45 IS 35 BP 13827 EP 13833 DI 10.1039/c6dt02438f PG 7 WC Chemistry, Inorganic & Nuclear SC Chemistry GA DV2JE UT WOS:000382745900023 PM 27510578 ER PT S AU Liu, GG Sheng, QW Geraldo, RLP Hou, WL Han, M AF Liu, Guigen Sheng, Qiwen Geraldo, Resende Lisboa Piassetta Hou, Weilin Han, Ming BE Udd, E Pickrell, G Du, HH TI A fiber-optic water flow sensor based on laser-heated silicon Fabry-Perot cavity SO FIBER OPTIC SENSORS AND APPLICATIONS XIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Fiber Optic Sensors and Applications XIII CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE Fiber-optic sensors; Fabry-Perot interferometer; flow sensor; oceanography ID OPTICAL-FIBER; FLOWMETER; INTERFEROMETER; ANEMOMETER AB A hot-wire fiber-optic water flow sensor based on laser-heated silicon Fabry-Perot interferometer (FPI) has been proposed and demonstrated in this paper. The operation of the sensor is based on the convective heat loss to water from a heated silicon FPI attached to the cleaved enface of a piece of single-mode fiber. The flow-induced change in the temperature is demodulated by the spectral shifts of the reflection fringes. An analytical model based on the FPI theory and heat transfer analysis has been developed for performance analysis. Numerical simulations based on finite element analysis have been conducted. The analytical and numerical results agree with each other in predicting the behavior of the sensor. Experiments have also been carried to demonstrate the sensing principle and verify the theoretical analysis. Investigations suggest that the sensitivity at low flow rates are much larger than that at high flow rates and the sensitivity can be easily improved by increasing the heating laser power. Experimental results show that an average sensitivity of 52.4 nm/(m/s) for the flow speed range of 1.5 mm/s to 12 mm/s was obtained with a heating power of similar to 12 mW, suggesting a resolution of similar to 1 mu m/s assuming a wavelength resolution of 0.05 pm. C1 [Liu, Guigen; Sheng, Qiwen; Geraldo, Resende Lisboa Piassetta; Han, Ming] Univ Nebraska Lincoln, Dept Elect & Comp Engn, Lincoln, NE 68588 USA. [Hou, Weilin] Naval Res Lab, Code 7333, Stennis Space Ctr, MS 39529 USA. RP Han, M (reprint author), Univ Nebraska Lincoln, Dept Elect & Comp Engn, Lincoln, NE 68588 USA. EM mhan3@unl.edu NR 16 TC 1 Z9 1 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0093-5 J9 PROC SPIE PY 2016 VL 9852 AR UNSP 98521B DI 10.1117/12.2230556 PG 7 WC Optics; Physics, Applied SC Optics; Physics GA BF5QU UT WOS:000382503300032 ER PT S AU Kelly, RF Anderson, TS AF Kelly, Ryan F. Anderson, Thomas S. BE Kolodny, MA Pham, T TI A Vector Relational Data Modeling approach to Insider Threat intelligence SO GROUND/AIR MULTISENSOR INTEROPERABILITY, INTEGRATION, AND NETWORKING FOR PERSISTENT ISR VII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ground/Air Multisensor Interoperability, Integration, and Networking for Persistent ISR VII CY APR 18-20, 2016 CL Baltimore, MD SP SPIE DE Crowd-source Insider Threat Intelligence ID RECOMMENDER SYSTEMS AB We address the problem of detecting insider threats before they can do harm. In many cases, co-workers notice indications of suspicious activity prior to insider threat attacks. A partial solution to this problem requires an understanding of how information can better traverse the communication network between human intelligence and insider threat analysts. Our approach employs modern mobile communications technology and scale free network architecture to reduce the network distance between human sensors and analysts. In order to solve this problem, we propose a Vector Relational Data Modeling approach to integrate human "sensors," geo-location, and existing visual analytics tools. This integration problem is known to be difficult due to quadratic increases in cost associated with complex integration solutions. A scale free network integration approach using vector relational data modeling is proposed as a method for reducing network distance without increasing cost. C1 [Kelly, Ryan F.; Anderson, Thomas S.] Naval Postgrad Sch, Dept Informat Sci, 1 Univ Way, Monterey, CA 93940 USA. RP Kelly, RF (reprint author), Naval Postgrad Sch, Dept Informat Sci, 1 Univ Way, Monterey, CA 93940 USA. NR 28 TC 0 Z9 0 U1 3 U2 3 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0072-0 J9 PROC SPIE PY 2016 VL 9831 AR 98310W DI 10.1117/12.2224299 PG 10 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF4UA UT WOS:000381708900020 ER PT J AU Apte, A Goncalves, P Yoho, K AF Apte, Aruna Goncalves, Paulo Yoho, Keenan TI Capabilities and competencies in humanitarian operations SO JOURNAL OF HUMANITARIAN LOGISTICS AND SUPPLY CHAIN MANAGEMENT LA English DT Article DE Humanitarian logistics; Civil-military co-operation; Capabilities and competencies ID SUPPLY CHAINS; AID; MANAGEMENT; LOGISTICS AB Purpose - Both the military and non-military organizations (NMO) bring assets, skills, and capabilities to a humanitarian crisis, however, their capabilities and competencies are very diverse. Identification of the specific competencies and capabilities that are core to these types of organizations can enable better planning by both military and NMOs, allowing them to achieve greater effectiveness and efficiency in the humanitarian response. The purpose of this paper is to explore the core capabilities of the military and NMOs engaged in humanitarian operations. Design/methodology/approach - The work builds on existing literature on the core competency of the corporation. The authors extend the concept of the ability to identify, cultivate, and exploit the core capabilities in the private sector to the organizations that want to respond efficiently and effectively to disasters. The authors develop a core competencies test for such organizations. Findings - The research identifies the competencies and capabilities that are core to the US military and NMOs for humanitarian assistance and disaster relief. By identifying such abilities the authors establish a vein of research for exploring the role of such organizations to facilitate greater understanding among academics, policy makers, and decision makers in public administration, public health, and international aid. Originality/value - Existing literature in humanitarian logistics does not adequately address identification of those competencies and capabilities that are core to the military organizations and NMOs and are most needed during the operational life cycle of a humanitarian crisis. In addition to identifying them, the authors compare the core capabilities of the military and NMO. C1 [Apte, Aruna] Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA. [Goncalves, Paulo] Univ Svizzera Italiana, Lugano, Switzerland. [Yoho, Keenan] Rollins Coll, Roy E Crummer Grad Sch Business, Winter Pk, FL 32789 USA. RP Apte, A (reprint author), Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA. EM auapte@nps.edu NR 69 TC 1 Z9 1 U1 1 U2 1 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY BD16 1WA, W YORKSHIRE, ENGLAND SN 2042-6747 EI 2042-6755 J9 J HUMANIT LOGIST SUP JI J. Humanist. Logist. Supply Chain Manag. PY 2016 VL 6 IS 2 BP 240 EP 258 DI 10.1108/JHLSCM-04-2015-0020 PG 19 WC Management SC Business & Economics GA DU0PC UT WOS:000381906000006 ER PT S AU Lu, T Chao, TH Chen, K Luong, A Dewees, M Yan, XY Chow, E Torres, G AF Lu, Thomas Chao, Tien-Hsin Chen, Kang (Frank) Luong, Andrew Dewees, Mallory Yan, Xinyi Chow, Edward Torres, Gilbert BE Casasent, D Alam, MS TI Cross-correlation and image alignment for multi-band IR sensors SO OPTICAL PATTERN RECOGNITION XXVII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optical Pattern Recognition XXVII CY APR 20-21, 2016 CL Baltimore, MD SP SPIE DE Multi-band IR images; cross-correlation; image processing; feature extraction; Wavelets AB We present the development of a cross-correlation algorithm for correlating objects in the long wave, mid wave and short wave Infrared sensor arrays. The goal is to align the images in the multi sensor suite by correlating multiple key features in the images. Due to the wavelength differences, the object appears very differently in the sensor images even the sensors focus on the same object In order to perform accurate correlation of the same object in the multi-band images, we perform image processing on the images so that the features of the object become similar to each other. Fourier domain band pass filters are used to enhance the images. Mexican Hat and Gaussian Derivative Wavelets are used to further enhance the features of the object. A Python based QT graphical user interface has been implemented to carry out the process. We show reliable results of the cross-correlation of the objects in multiple band videos. C1 [Lu, Thomas; Chao, Tien-Hsin; Chow, Edward] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA. [Chen, Kang (Frank)] Univ Calif Los Angeles, Los Angeles, CA USA. [Luong, Andrew] Univ Calif Irvine, Irvine, CA USA. [Dewees, Mallory] Saddleback Coll, Mission Viejo, CA USA. [Yan, Xinyi] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Torres, Gilbert] Naval Air Warfare Ctr, Point Mugu Nawc, CA USA. RP Lu, T (reprint author), CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA. EM Thomas.t.lu@jpl.nasa.gov NR 2 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 978-1-5106-0086-7 J9 PROC SPIE PY 2016 VL 9845 AR 984505 DI 10.1117/12.2224694 PG 12 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF4UB UT WOS:000381709400003 ER PT S AU Brandsema, MJ Narayanan, RM Lanzagorta, M AF Brandsema, Matthew J. Narayanan, Ram M. Lanzagorta, Marco BE Ranney, KI Doerry, A TI Analytical Formulation of the Quantum Electromagnetic Cross Section SO RADAR SENSOR TECHNOLOGY XX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Radar Sensor Technology XX CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE Quantum Radar; QRCS; RCS; Quantum Advantage; Quantum Information Science AB It has been found that the quantum radar cross section (QRCS) equation can be written in terms of the Fourier transform of the surface atom distribution of the object. This paper uses this form to provide an analytical formulation of the quantum radar cross section by deriving closed form expressions for various geometries. These expressions are compared to the classical radar cross section (RCS) expressions and the quantum advantages are discerned from the differences in the equations. Multiphoton illumination is also briefly discussed. C1 [Brandsema, Matthew J.; Narayanan, Ram M.] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA. [Lanzagorta, Marco] Naval Res Lab, Washington, DC 20375 USA. RP Brandsema, MJ (reprint author), Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA. EM mattbrandsema@yahoo.com NR 8 TC 1 Z9 1 U1 3 U2 3 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0070-6 J9 PROC SPIE PY 2016 VL 9829 AR UNSP 98291H DI 10.1117/12.2224026 PG 8 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BF5QW UT WOS:000382503800045 ER PT S AU Lanzagorta, M Jitrik, O Uhlmann, J Venegas, S AF Lanzagorta, Marco Jitrik, Oliverio Uhlmann, Jeffrey Venegas, Salvador BE Ranney, KI Doerry, A TI Clutter Attenuation Using the Doppler Effect in Standoff Electromagnetic Quantum Sensing SO RADAR SENSOR TECHNOLOGY XX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Radar Sensor Technology XX CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE Quantum Radar; Quantum Sensing; Quantum Sensors; Quantum Information; Doppler Effect; Radar; Radar Clutter; Clutter Attenuation; Electronic Warfare; Radar Countermeasures AB In the context of traditional radar systems, the Doppler effect is crucial to detect and track moving targets in the presence of clutter. In the quantum radar context, however, most theoretical performance analyses to date have assumed static targets. In this paper we consider the Doppler effect at the single photon level. In particular, we describe how the Doppler effect produced by clutter and moving targets modifies the quantum distinguishability and the quantum radar error detection probability equations. Furthermore, we show that Doppler-based delay line cancelers can reduce the effects of clutter in the context of quantum radar, but only in the low-brightness regime. Thus, quantum radar may prove to be an important technology if the electronic battlefield requires stealthy tracking and detection of moving targets in the presence of clutter. C1 [Lanzagorta, Marco] Naval Res Lab, Washington, DC 20375 USA. [Jitrik, Oliverio] Ranken Inst, Mexico City, DF, Mexico. [Uhlmann, Jeffrey] Univ Missouri, Columbia, MO USA. [Venegas, Salvador] Monterrey Inst Technol, Mexico City, DF, Mexico. RP Lanzagorta, M (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM marco.lanzagorta@nrl.navy.mil; oliverio00jm@gmail.com; juhlmann@missouri.edu; salvador.venegas-andraca@keble.oxon.org NR 11 TC 0 Z9 0 U1 3 U2 3 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0070-6 J9 PROC SPIE PY 2016 VL 9829 AR UNSP 98291E DI 10.1117/12.2223972 PG 17 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BF5QW UT WOS:000382503800042 ER PT S AU Lanzagorta, M Uhlmann, J Jitrik, O Venegas-Andraca, SE Wiesman, S AF Lanzagorta, Marco Uhlmann, Jeffrey Jitrik, Oliverio Venegas-Andraca, Salvador E. Wiesman, Seth BE Ranney, KI Doerry, A TI Quantum Computation of the Electromagnetic Cross Section of Dielectric Targets SO RADAR SENSOR TECHNOLOGY XX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Radar Sensor Technology XX CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE Radar; Quantum Computation; Radar Cross Sections; Quantum Information; Sensing; Scattering Matrix; Radar Absorbing Materials ID SCATTERING-THEORY; WALKS; GRAPHS AB The Radar Cross Section (RCS) is a crucial element for assessing target visibility and target characterization, and it depends not only on the target's geometry but also on its composition. However, the calculation of the RCS is a challenging task due to the mathematical description of electromagnetic phenomena as well as the computational resources needed. In this paper, we will introduce two ideas for the use of quantum information processing techniques to calculate the RCS of dielectric targets. The first is to use toolboxes of quantum functions to determine the geometric component of the RCS. The second idea is to use quantum walks, expressed in terms of scattering processes, to model radar absorbing materials. C1 [Lanzagorta, Marco] Naval Res Lab, Washington, DC 20375 USA. [Uhlmann, Jeffrey; Wiesman, Seth] Univ Missouri, Columbia, MO 65211 USA. [Jitrik, Oliverio] Ranken Inst, Mexico City, DF, Mexico. [Venegas-Andraca, Salvador E.] Tecnol Monterrey, Escuela Ciencias & Ingn, Monterrey, Estado De Mexic, Mexico. RP Lanzagorta, M (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM marco.lanzagorta@nrl.navy.mil; uhlmannj@missouri.edu NR 30 TC 0 Z9 0 U1 4 U2 4 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0070-6 J9 PROC SPIE PY 2016 VL 9829 AR UNSP 98291I DI 10.1117/12.2224078 PG 15 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BF5QW UT WOS:000382503800046 ER PT S AU Lanzagorta, M Uhlmann, J Le, T Jitrik, O Venegas-Andraca, SE AF Lanzagorta, Marco Uhlmann, Jeffrey Le, True Jitrik, Oliverio Venegas-Andraca, Salvador E. BE Ranney, KI Doerry, A TI Improving Quantum Sensing Efficiency with Virtual Modes SO RADAR SENSOR TECHNOLOGY XX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Radar Sensor Technology XX CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE Quantum Radar; Quantum Sensing; Quantum Sensors; Quantum Information; Data Fusion; Multistatic Radar; Virtual Modes AB Recent research suggests that quantum radar offers several potential advantages over classical sensing technologies. At present, the primary practical challenge is the fast and efficient generation of entangled microwave photons. To mitigate this limitation we propose and briefly examine a distributed architecture to synthetically increase the number of effectively-distinguishable modes. C1 [Lanzagorta, Marco] Naval Res Lab, Washington, DC 20375 USA. [Uhlmann, Jeffrey; Le, True] Univ Missouri, Columbia, MO 65211 USA. [Jitrik, Oliverio] Ranken Inst, Mexico City, DF, Mexico. [Venegas-Andraca, Salvador E.] Tecnol Monterrey, Escuela Ciencias & Ingn, Monterrey, Mexico. RP Lanzagorta, M (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM marco.lanzagorta@nrl.navy.mil NR 12 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 978-1-5106-0070-6 J9 PROC SPIE PY 2016 VL 9829 AR UNSP 98291D DI 10.1117/12.2223981 PG 8 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BF5QW UT WOS:000382503800041 ER PT S AU Lanzagorta, M Jitrik, O Uhlmann, J Venegas, S AF Lanzagorta, Marco Jitrik, Oliverio Uhlmann, Jeffrey Venegas, Salvador BE Ranney, KI Doerry, A TI Quantum Seismography SO RADAR SENSOR TECHNOLOGY XX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Radar Sensor Technology XX CY APR 18-21, 2016 CL Baltimore, MD SP SPIE DE Quantum Radar; Quantum Sensing; Quantum Sensors; Quantum Information; Seismography; Seismology; Optical Interferometer; Quantum Seismography; Earthquake Early Warning System; Forensic Seismology AB A major scientific thrust from recent years has been to try to harness quantum phenomena to increase the performance of a wide variety of information processing devices. In particular, quantum radar has emerged as an intriguing theoretical concept that could revolutionize electromagnetic standoff sensing. In this paper we will discuss how the techniques developed for quantum radar could also be used towards the design of novel seismographs able to detect small ground vibrations., We use a hypothetical earthquake warning system in order to compare quantum seismography with traditional seismographic techniques. C1 [Lanzagorta, Marco] Naval Res Lab, Washington, DC 20375 USA. [Jitrik, Oliverio] Ranken Inst, Mexico City, DF, Mexico. [Uhlmann, Jeffrey] Univ Missouri, Columbia, MO USA. [Venegas, Salvador] Monterrey Inst Technol, Mexico City, DF, Mexico. RP Lanzagorta, M (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM marco.lanzagorta@nrl.navy.mil; oliverio00jm@gmail.com; uhlmannj@missouri.edu; salvador.venegas-andraca@keble.oxon.org NR 35 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0070-6 J9 PROC SPIE PY 2016 VL 9829 AR UNSP 98291G DI 10.1117/12.2223831 PG 16 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BF5QW UT WOS:000382503800044 ER PT J AU Mjelde, FV Smith, K Lunde, P Espevik, R AF Mjelde, Frode Voll Smith, Kip Lunde, Petter Espevik, Roar TI Military teams - A demand for resilience SO WORK-A JOURNAL OF PREVENTION ASSESSMENT & REHABILITATION LA English DT Article DE Team performance assessment; teamwork; taskwork; scenario-based simulator training; transfer of training ID TEAMWORK AB BACKGROUND: The Royal Norwegian Naval Academy (RNoNA) has an interest in enhancing military teams' knowledge, skills and abilities to deal with complex situations and environments. OBJECTIVE: The objective is to document the need for resilience in military teams and to expand the understanding of how such behavior can be meaningfully instilled through team training interventions. METHOD: Norwegian military subject matter experts (SMEs) assessed the performance of military teams participating in complex military training exercises. Eight cadet teams at the RNoNA were assessed during two separate 4-hour simulator training exercises and a 48-hour live training exercise. RESULTS: Positive Spearman rank correlation coefficients between resilience assessments in the simulator training exercises and the live training exercise were strongest when the simulator scenario emphasized resilience factors inherent in the live exercise, and weakest when the simulator scenario did not facilitate the task demands in the live exercise. CONCLUSION: The study showed that resilience assessed in teams during simulator training exercises predicted their resilient behavior in a subsequent live training exercise and that the proper design of scenario-based simulator training can realistically and effectively represent resilience stressors found in live operations. C1 [Mjelde, Frode Voll; Lunde, Petter; Espevik, Roar] Royal Norwegian Naval Acad, Bergen, Norway. [Smith, Kip] US Naval Postgrad Sch, Monterey, CA USA. RP Mjelde, FV (reprint author), Royal Norwegian Naval Acad, Human Factors, Simulat & Training, POB 51 Haakonsvern, N-5886 Bergen, Norway. EM frode.voll@sksk.mil.no FU Royal Norwegian Naval Academy FX This work was sponsored by The Royal Norwegian Naval Academy. Special thanks go to Cdr Sg. Olav Kjellevold Olsen, NOR Navy, for his contribution to the development of the RNoN Aassessment tool. This work benefitted from reviews by two faculty members of the U.S. Naval Postgraduate School, Monterey, CA, Susan Hutchins and Michael McCauley. NR 29 TC 0 Z9 0 U1 0 U2 0 PU IOS PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 1051-9815 EI 1875-9270 J9 WORK JI Work PY 2016 VL 54 IS 2 BP 283 EP 294 DI 10.3233/WOR-162298 PG 12 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA DS9RM UT WOS:000381121000006 PM 27259180 ER PT S AU Bayya, S Gibson, D Nuygen, V Beadie, G Sanghera, J Kotov, M AF Bayya, Shyam Gibson, Daniel Vinh Nuygen Beadie, Guy Sanghera, Jasbinder Kotov, Mikhail BE Vizgaitis, JN Andresen, BF Marasco, PL Sanghera, JS Snyder, MP TI Expanded IR glass map for multispectral optics designs SO ADVANCED OPTICS FOR DEFENSE APPLICATIONS: UV THROUGH LWIR SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Advanced Optics for Defense Applications - UV through LWIR CY APR 17-19, 2016 CL Baltimore, MD SP SPIE DE SWIR; MWIR; LWIR; IR glass; multispectral optics AB This paper presents new multispectral IR glasses with transmission from 0.9 to > 14 lam in wavelength and refractive index from 2.38 to 2.17. These new glasses are designed to have comparable glass softening temperatures and compatible coefficients of thermal expansion to allow bonding and co-molding of multilayer optics. With large variation in their Abbe numbers and negative to near-zero dn/dT, optics made from these new glasses can significantly reduce the size/weight or complexity of the multispectral imaging systems for weight sensitive platforms. C1 [Bayya, Shyam; Gibson, Daniel; Vinh Nuygen; Beadie, Guy; Sanghera, Jasbinder] Naval Res Lab, Code 5620, Washington, DC 20375 USA. [Kotov, Mikhail] Sotera Def Solut, Herndon, VA USA. RP Bayya, S (reprint author), Naval Res Lab, Code 5620, Washington, DC 20375 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0063-8 J9 PROC SPIE PY 2016 VL 9822 AR UNSP 98220N DI 10.1117/12.2224130 PG 9 WC Optics SC Optics GA BF5NT UT WOS:000382320500021 ER PT S AU Bayya, S Villalobos, G Hunt, M Kim, W Plunkett, S Sanghera, J AF Bayya, Shyam Villalobos, Guillermo Hunt, Michael Kim, Woohong Plunkett, Simon Sanghera, Jasbinder BE Vizgaitis, JN Andresen, BF Marasco, PL Sanghera, JS Snyder, MP TI Rugged spinel optics for space based imaging systems SO ADVANCED OPTICS FOR DEFENSE APPLICATIONS: UV THROUGH LWIR SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Advanced Optics for Defense Applications - UV through LWIR CY APR 17-19, 2016 CL Baltimore, MD SP SPIE DE Space optics; Particle impact damage; Radiation damage; Spinel; Rugged; Multispectral optics ID IMPACTS AB Space environment is very harsh for optical systems. Currently available optical materials for space applications are susceptible to surface and bulk damage due to high-speed impacts from dust and debris found in the space environment. Impacts lead to surface pitting and fracturing that may compromise structural integrity and degrade the optical performance of imaging systems. We are developing polycrystalline spinel as a rugged optics material. With its 3x hardness and 5x strength, as compared to BK7 glass, spinel is a very promising optical material for space imaging applications. Spinel's broad transmission from 160 nm to 5000 nm will also enable multispectral imaging from ultraviolet to midwave infrared. C1 [Bayya, Shyam; Villalobos, Guillermo; Hunt, Michael; Kim, Woohong; Plunkett, Simon; Sanghera, Jasbinder] Naval Res Lab, Washington, DC 20375 USA. RP Bayya, S (reprint author), Naval Res Lab, Washington, DC 20375 USA. NR 11 TC 0 Z9 0 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0063-8 J9 PROC SPIE PY 2016 VL 9822 AR UNSP 982204 DI 10.1117/12.2224144 PG 6 WC Optics SC Optics GA BF5NT UT WOS:000382320500003 ER PT S AU Beadie, G Mait, JN Flynn, RA Milojkovic, P AF Beadie, G. Mait, J. N. Flynn, R. A. Milojkovic, P. BE Vizgaitis, JN Andresen, BF Marasco, PL Sanghera, JS Snyder, MP TI Materials Figure of Merit for Achromatic Gradient Index (GRIN) Optics SO ADVANCED OPTICS FOR DEFENSE APPLICATIONS: UV THROUGH LWIR SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Advanced Optics for Defense Applications - UV through LWIR CY APR 17-19, 2016 CL Baltimore, MD SP SPIE DE Gradient index optics; GRIN; Optical design; Polymer co-extrusion; Achromats ID REFRACTIVE-INDEX; LENS AB A new figure of merit is developed for ranking pairs of materials as candidates for gradient index (GRIN) optics capable of good color correction. The approach leverages recent work which derives a connection in GRIN lenses between the optical properties of constituent materials and the wavelength dependence of the lens power. We extend the analysis here, the effectiveness of which is evidenced by a simulated f/3 GRIN lens with diffraction-limited performance over the visible spectrum, using the top material pair selected out of a database of >60,000 possible candidates. C1 [Beadie, G.; Flynn, R. A.] US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. [Mait, J. N.; Milojkovic, P.] Army Res Lab, 2800 Powder Mill Rd, Adelphi, MD 20783 USA. RP Beadie, G (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 4 TC 1 Z9 1 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0063-8 J9 PROC SPIE PY 2016 VL 9822 AR UNSP 98220Q DI 10.1117/12.2224105 PG 6 WC Optics SC Optics GA BF5NT UT WOS:000382320500024 ER PT S AU Flynn, RA Beadie, G AF Flynn, Richard A. Beadie, Guy BE Vizgaitis, JN Andresen, BF Marasco, PL Sanghera, JS Snyder, MP TI Athermal achromat lens enabled by polymer gradient index optics SO ADVANCED OPTICS FOR DEFENSE APPLICATIONS: UV THROUGH LWIR SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Advanced Optics for Defense Applications - UV through LWIR CY APR 17-19, 2016 CL Baltimore, MD SP SPIE DE Gradient index optics; GRIN; Optical design; Polymer co-extrusion; Achromat; Athermal; Thermal ID REFRACTIVE-INDEX; SPHERICAL GRADIENT; DESIGN AB An optical design is shown which provides simultaneous color correction over the visible spectrum and passive thermal compensation, for an f/4 doublet made of a glass and a polymer gradient index (GRIN) element. The design is enabled by a new optical model for the thermally varying GRIN element, which incorporates measured material properties from 20-40 degrees C (limited only by the extent of the measured data set). The design is made possible because of the GRIN degrees of freedom available to the material. A color-corrected doublet is most efficient when there is a large ratio of the dispersion strength (Abbe number) between the two materials. To make that doublet athermal, however, there needs to be an equally high ratio between the thermal coefficients. The large ratio of polymer to glass thermal coefficients presents a unique advantage for GRIN: the effective GRIN dispersion coefficient can have just as large a ratio to the glass as the thermal coefficients, making for a powerful athermal achromat. To our knowledge, this is the first example of a polymer GRIN used for simultaneous chromatic and thermal correction. C1 [Flynn, Richard A.; Beadie, Guy] US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. RP Flynn, RA (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA. NR 9 TC 1 Z9 1 U1 2 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0063-8 J9 PROC SPIE PY 2016 VL 9822 AR UNSP 98220S DI 10.1117/12.2224124 PG 7 WC Optics SC Optics GA BF5NT UT WOS:000382320500026 ER PT S AU Gibson, D Bayya, S Nguyen, V Sanghera, J Kotov, M Miklos, R McClain, C AF Gibson, Daniel Bayya, Shyam Vinh Nguyen Sanghera, Jas Kotov, Mikhail Miklos, Robert McClain, Collin BE Vizgaitis, JN Andresen, BF Marasco, PL Sanghera, JS Snyder, MP TI IR GRIN Optics for Imaging SO ADVANCED OPTICS FOR DEFENSE APPLICATIONS: UV THROUGH LWIR SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Advanced Optics for Defense Applications - UV through LWIR CY APR 17-19, 2016 CL Baltimore, MD SP SPIE DE GRIN optics; imaging; chalcogenide; infrared; MWIR; LWIR; SWIR; dual-band ID GRADIENT REFRACTIVE-INDEX; EYE LENS AB Infrared (IR) transmitting gradient index (GRIN) materials have been developed for broad-band IR imaging. This material is derived from the diffusion of homogeneous chalcogenide glasses has good transmission for all IR wavebands. The optical properties of the IR-GRIN materials are presented and the fabrication methodologies are discussed. Modeling and optimization of the diffusion process is exploited to minimize the deviation of the index profile from the design profile. C1 [Gibson, Daniel; Bayya, Shyam; Vinh Nguyen; Sanghera, Jas] US Naval Res Lab, Code 5620,4555 Overlook Ave SW, Washington, DC 20375 USA. [Kotov, Mikhail; Miklos, Robert] Sotera Def Solut, 2121 Cooperat Way 400, Herndon, VA 20171 USA. [McClain, Collin] Univ Res Fdn, 6411 Ivy Lane 110, Greenbelt, MD 20770 USA. RP Gibson, D (reprint author), US Naval Res Lab, Code 5620,4555 Overlook Ave SW, Washington, DC 20375 USA. NR 22 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 978-1-5106-0063-8 J9 PROC SPIE PY 2016 VL 9822 AR UNSP 98220R DI 10.1117/12.2224094 PG 9 WC Optics SC Optics GA BF5NT UT WOS:000382320500025 ER PT S AU Lindberg, GP Berg, RH Deegan, J Benson, R Salvaggio, PS Gross, N Weinstein, BA Gibson, D Bayya, S Sanghera, J Nguyen, V Kotov, M AF Lindberg, G. P. Berg, R. H. Deegan, J. Benson, R. Salvaggio, P. S. Gross, N. Weinstein, B. A. Gibson, D. Bayya, S. Sanghera, J. Nguyen, V Kotov, M. BE Vizgaitis, JN Andresen, BF Marasco, PL Sanghera, JS Snyder, MP TI Raman and CT scan mapping of chalcogenide glass diffusion generated gradient index profiles SO ADVANCED OPTICS FOR DEFENSE APPLICATIONS: UV THROUGH LWIR SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Advanced Optics for Defense Applications - UV through LWIR CY APR 17-19, 2016 CL Baltimore, MD SP SPIE DE Chalcogenide; Glass; Metrology; Gradient Index Optics (GRIN); Lenses AB Metrology of a gradient index (GRIN) material is non-trivial, especially in the realm of infrared and large refractive index. Traditional methods rely on index matching fluids which are not available for indexes as high as those found in the chalcogenide glasses (2.4-3.2). By diffusing chalcogenide glasses of similar composition one can blend the properties in a continuous way. In an effort to measure this we will present data from both x-ray computed tomography scans (CT scans) and Raman mapping scans of the diffusion profiles. Proof of concept measurements on undiffused bonded sheets of chalcogenide glasses were presented previously.' The profiles measured will be of axially stacked sheets of chalcogenide glasses diffused to create a linear GRIN profile and nested tubes of chalcogenide glasses diffused to create a radial parabolic GRIN profile. We will show that the x-ray absorption in the CT scan and the intensity of select Raman peaks spatially measured through the material are indicators of the concentration of the diffusion ions and correlate to the spatial change in refractive index. We will also present finite element modeling (FEM) results and compare them to post precision glass molded (PGM) elements that have undergone CT and Raman mapping. C1 [Lindberg, G. P.; Berg, R. H.; Deegan, J.; Benson, R.; Salvaggio, P. S.] Rochester Precis Opt, W Henrietta, NY 14586 USA. [Gross, N.; Weinstein, B. A.] SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA. [Gibson, D.; Bayya, S.; Sanghera, J.; Nguyen, V] Naval Res Lab, Code 5620, Washington, DC 20375 USA. [Kotov, M.] Sotera Def Solut, Annapolis Jct, MD USA. RP Lindberg, GP (reprint author), Rochester Precis Opt, W Henrietta, NY 14586 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0063-8 J9 PROC SPIE PY 2016 VL 9822 AR UNSP 98220W DI 10.1117/12.2223775 PG 6 WC Optics SC Optics GA BF5NT UT WOS:000382320500029 ER PT S AU Bashkansky, M Pruessner, MW Vurgaftman, I Kim, M Reintjes, J AF Bashkansky, Mark Pruessner, Marcel W. Vurgaftman, Igor Kim, Mijin Reintjes, J. BE Donkor, E Hayduk, M TI Higher-Order Spontaneous Parametric Down-Conversion with Back-Propagating Idler using a Submicron Poled KTP Waveguide SO QUANTUM INFORMATION AND COMPUTATION IX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Quantum Information and Computation IX CY APR 20-21, 2016 CL Baltimore, MD SP SPIE DE Spontaneous parametric down-conversion; SPDC; periodically poled waveguide AB Spontaneous parametric downconversion (SPDC) using periodically poled nonlinear optical crystals under the quasi-phase-matching condition has found wide use in quantum optics. High efficiencies and good coupling to single-mode fibers resulted from using channel waveguides in crystals. It is often desirable to have a very narrow bandwidth for the signal and idler photons, but under the typical operating conditions, phase matching dictates the bandwidth of the SPDC to be of the order of <1 nm. This occurs because the co-propagating signal and idler photons are entangled, and an increase of the signal wave-vector is compensated by a decrease of the idler wave-vector. One way to reduce the bandwidth is by forming either external or internal cavities. Additionally, bandwidth reduction is possible without cavities when the signal and idler are counter-propagating, and the changes in the wave-vector with frequency are additive. To accomplish this a domain inversion on the wavelength scale is required. In this work, we experimentally demonstrate SPDC in one-dimensional KTP-based waveguides with sub-micron poling for forward and backward interactions. Some of the spectral features of the generated light are accounted for by mode coupling theory in periodically poled waveguides but other features are as yet not explained. C1 [Bashkansky, Mark; Pruessner, Marcel W.; Vurgaftman, Igor] Naval Res Lab, Washington, DC 20375 USA. [Kim, Mijin; Reintjes, J.] Sotera Def Solut Inc, Columbia, MD USA. RP Bashkansky, M (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM bashkansky@nrl.navy.mil NR 9 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0114-7 J9 PROC SPIE PY 2016 VL 9873 AR 987303 DI 10.1117/12.2222303 PG 8 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF4TN UT WOS:000381692900002 ER PT S AU Reintjes, J Bashkansky, M AF Reintjes, J. Bashkansky, Mark BE Donkor, E Hayduk, M TI A proposed optical test for Popper's challenge to quantum mechanics SO QUANTUM INFORMATION AND COMPUTATION IX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Quantum Information and Computation IX CY APR 20-21, 2016 CL Baltimore, MD SP SPIE DE Entangled ghost imaging; Spontaneous Parametric Downconversion; Popper's experiment ID DELAYED CHOICE; ERASER AB We describe an optical configuration that is predicted to exhibit the behavior described by Popper in his challenge to conventional quantum mechanics. Popper rejected this behavior on the grounds that it was unphysical because it relied on observer knowledge as a causative agent. We offer an interpretation in which the behavior arises simply out of the mode properties of an entangled system. In this interpretation the observer knowledge reveals in which mode an excitation occurs, but does not affect future behavior as asserted by Popper. We also discuss the relation of our system to the quantum eraser. C1 [Reintjes, J.] Sotera Def Solut, Columbia, MD USA. [Bashkansky, Mark] Naval Res Lab, Code 5613, Washington, DC 20375 USA. RP Reintjes, J (reprint author), Sotera Def Solut, Columbia, MD USA. NR 18 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0114-7 J9 PROC SPIE PY 2016 VL 9873 AR 987309 DI 10.1117/12.2222307 PG 13 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF4TN UT WOS:000381692900006 ER PT S AU Smith, JF AF Smith, James F., III BE Donkor, E Hayduk, M TI Quantum hyper-entanglement and angular spectrum decomposition applied to sensors SO QUANTUM INFORMATION AND COMPUTATION IX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Quantum Information and Computation IX CY APR 20-21, 2016 CL Baltimore, MD SP SPIE DE Quantum sensing/information/detection/imaging; quantum hyper-entanglement/entanglement; super sensitivity/super resolution; quantum isolation; angular spectrum decomposition; adaptive optics; photonic orbital angular momentum; radial quantum number; quantum Fisher information/Cramer-Rao lower bound; quantum Chernoff bound AB Hyper-entanglement with an emphasis on mode type is used to extend a previously developed atmospheric imaging system. Angular spectrum expansions combined with second quantization formalism permits many different mode types to be considered using a common formalism. Fundamental Gaussian, standard Hermite-Gaussian, standard Laguerre-Gaussian, and Bessel modes are developed. Hyper-entanglement refers to entanglement in more than one degree of freedom, e.g. polarization, energy-time and orbital angular momentum. The system functions at optical or infrared frequencies. Only the signal photon propagates in the atmosphere, the ancilla photon is retained within the detector. This results in loss being essentially classical, giving rise to stronger forms of entanglement. A simple atomic physics based model of the scattering target is developed. This model permits the derivation in closed form of the loss coefficient for photons with a given mode type scattering from the target. Signal loss models for propagation, transmission, detection, and scattering are developed and applied. The probability of detection of photonic orbital angular momentum is considered in terms of random media theory. A model of generation and detection efficiencies for the different degrees of freedom is also considered. The implications of loss mechanisms for signal to noise ratio (SNR), and other quantum information theoretic quantities are discussed. Techniques for further enhancing the system's SNR and resolution through adaptive optics are examined. The formalism permits random noise and entangled or non-entangled sources of interference to be modeled. C1 [Smith, James F., III] Naval Res Lab, Code 5741, 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 18 TC 1 Z9 1 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0114-7 J9 PROC SPIE PY 2016 VL 9873 AR 98730M DI 10.1117/12.2222147 PG 16 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF4TN UT WOS:000381692900014 ER PT S AU Ewing, KJ Sanghera, J Myers, SW Ervin, AM Carey, C Gleason, G Mosser, L Levy, L Hennessey, MK Bulluck, R AF Ewing, K. J. Sanghera, J. Myers, S. W. Ervin, A. M. Carey, C. Gleason, G. Mosser, L. Levy, L. Hennessey, M. K. Bulluck, R. BE Kim, MS Chao, K Chin, BA TI Applicability of Ion Mobility Spectrometry for Detection of Quarantine Pests in Wood SO SENSING FOR AGRICULTURE AND FOOD QUALITY AND SAFETY VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Sensing for Agriculture and Food Quality and Safety VIII CY APR 20-21, 2016 CL Baltimore, MD SP SPIE AB Visual inspection is the most commonly used method for detecting quarantine pests in agricultural cargo items at ports. For example, solid wood packing material (SWPM) at ports may be a pathway for wood pests and is a frequent item of inspection at ports. The inspection process includes examination of the external surface of the item and often destructive sampling to detect internal pest targets. There are few tools available to inspectors to increase the efficiency of inspection and reduce the labor involved. Ion mobility spectrometry (IMS) has promise as an aid for inspection. Because pests emit volatile organic compounds (VOCs) such as hormone like substances, Ion Mobility Spectrometry (IMS) was investigated for possible utility for detecting pests during inspection. SWPM is a major pest pathway in trade, and fumigation of many kinds of wood, including SWPM, with methyl bromide (MeBr) following a published schedule(1) is regularly conducted for phytosanitary reasons prior to shipment to the United States. However, the question remains as to how long the methyl bromide remains in the wood samples after fumigation such that it could act as an interferent to the detection of pest related VOC emissions. This work investigates the capability of ion mobility spectrometry to detect the presence of residual methyl bromide in fumigated maple and poplar wood samples at different times post fumigation up to 118 days after fumigation. Data show that MeBr can be detected in the less dense poplar wood up to 118 days after fumigation while MeBr can be detected in the denser maple wood 55 days after fumigation. C1 [Ewing, K. J.; Sanghera, J.] Naval Res Lab, Washington, DC 20375 USA. [Myers, S. W.] US Anim & Plant Hlth Inspect Serv, USDA, Boston, MA USA. [Ervin, A. M.] DHS S&T, Washington, DC USA. [Carey, C.; Gleason, G.] Bruker Detect Corp, Billerica, MA USA. [Mosser, L.] US Anim & Plant Hlth Inspect Serv, USDA, Miami, FL USA. [Levy, L.] US Anim & Plant Hlth Inspect Serv, USDA, Beltsville, MD USA. [Hennessey, M. K.; Bulluck, R.] US Anim & Plant Hlth Inspect Serv, USDA, Raleigh, NC USA. RP Ewing, KJ (reprint author), Naval Res Lab, Washington, DC 20375 USA. EM ken.ewing@nrl.navy.mil NR 0 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 978-1-5106-0105-5 J9 PROC SPIE PY 2016 VL 9864 AR 98640P DI 10.1117/12.2223877 PG 7 WC Agriculture, Multidisciplinary; Remote Sensing; Optics SC Agriculture; Remote Sensing; Optics GA BF4TO UT WOS:000381693200015 ER PT J AU Gompert, DC Stover, BH AF Gompert, David C. Stover, Bruce H. TI Creating a Sino-US Energy Relationship SO SURVIVAL LA English DT Article AB America's emergence as a producer of liquid hydrocarbons suggests an opportunity to sell energy to China, help reduce its greenhouse-gas emissions and lend stability to this most critical relationship. C1 [Gompert, David C.] US Naval Acad, Annapolis, MD 21402 USA. [Gompert, David C.] Natl Intelligence, Annapolis, MD USA. [Stover, Bruce H.] Univ Oklahoma, Price Coll Energy Inst, Norman, OK 73019 USA. [Gompert, David C.; Stover, Bruce H.] Bristow Grp, Norman, OK USA. RP Gompert, DC (reprint author), US Naval Acad, Annapolis, MD 21402 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD PI ABINGDON PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0039-6338 EI 1468-2699 J9 SURVIVAL JI Survival PY 2016 VL 58 IS 4 BP 63 EP 69 DI 10.1080/00396338.2016.1207950 PG 7 WC International Relations; Political Science SC International Relations; Government & Law GA DT3IL UT WOS:000381374300004 ER PT S AU Mechtel, DM Jenkins, RB Joyce, PJ Nelson, CL AF Mechtel, Deborah M. Jenkins, R. Brian Joyce, Peter J. Nelson, Charles L. BE Andresen, BF Fulop, GF Hanson, CM Norton, PR TI RF switching network: a novel technique for IR sensing SO INFRARED TECHNOLOGY AND APPLICATIONS XLII SE Proceedings of SPIE LA English DT Proceedings Paper CT 42 Conference on Infrared Technology and Applications XLII CY APR 18-21, 2016 CL Baltimore, MA SP SPIE DE IR sensing; photoconductive sensors; RF switching network AB Rapid sensing of near infrared (IR) energy on a composite structure would provide information that could mitigate damage to composite structures. This paper describes a novel technique that implements photoconductive sensors in a radio frequency (RF) switching network designed to locate in real time the position and intensity of IR radiation incident on a composite structure. In the implementation described here, photoconductive sensors act as rapid response switches in a two layer RF network embedded in an FR-4 laminate. To detect radiation, phosphorous doped silicon photoconductive sensors are inserted in GHz range RF transmission lines. Photoconductive sensors use semiconductor materials that are optically sensitive at material dependent wavelengths. Incident radiation at the appropriate wavelength produces hole-electron pairs, so that the semiconductor becomes a conductor. By permitting signal propagation only when a sensor is illuminated, the RF signals are selectively routed from the lower layer transmission lines to the upper layer lines, thereby pinpointing the location and strength of incident radiation on a structure. Simulations based on a high frequency 3D planar electromagnetics model are presented and compared to experimental results. Experimental results are described for GHz range RF signal control for 300 mW and 180 mW incident energy from 975 nm and 1060 nm wavelength lasers respectively, where upon illumination, RF transmission line signal output power doubled when compared to non-illuminated results. Experimental results are reported for 100 W incident energy from a 1060 nm laser. Test results illustrate that real-time signal processing would permit a structure or vehicle to be controlled in response to incident radiation C1 [Mechtel, Deborah M.; Jenkins, R. Brian; Nelson, Charles L.] US Naval Acad, Dept Elect & Comp Engn, 105 Maryland Ave, Annapolis, MD 21402 USA. [Joyce, Peter J.] US Naval Acad, Dept Mech Engn, 590 Holloway Rd,Maryland Ave, Annapolis, MD 21402 USA. RP Mechtel, DM (reprint author), US Naval Acad, Dept Elect & Comp Engn, 105 Maryland Ave, Annapolis, MD 21402 USA. OI Joyce, Peter/0000-0001-6774-2170 NR 2 TC 1 Z9 1 U1 3 U2 3 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0060-7 J9 PROC SPIE PY 2016 VL 9819 AR 981925 DI 10.1117/12.2224353 PG 9 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA BF4JD UT WOS:000381071600070 ER PT J AU Iosifescu, DV Neborsky, RJ Valuck, RJ AF Iosifescu, Dan V. Neborsky, Robert J. Valuck, Robert J. TI The use of the Psychiatric Electroencephalography Evaluation Registry (PEER) to personalize pharmacotherapy SO NEUROPSYCHIATRIC DISEASE AND TREATMENT LA English DT Article DE EEG; depression; antidepressant; suicide; predictive analytics ID STAR-ASTERISK-D; EEG AB Purpose: This study aims to determine whether Psychiatric Electroencephalography Evaluation Registry (PEER) Interactive (an objective, adjunctive tool based on a comparison of a quantitative electroencephalogram to an existing registry of patient outcomes) is more effective than the current standard of care in treatment of subjects suffering from depression. Patients and methods: This is an interim report of an ongoing, 2-year prospective, randomized, double blind, controlled study to evaluate PEER Interactive in guiding medication selection in subjects with a primary diagnosis of depression vs standard treatment. Subjects in treatment at two military hospitals were blinded as to study group assignment and their self-report symptom ratings were also blinded. Quick Inventory of Depressive Symptomatology, Self-Report(QIDS-SR16) depression scores were the primary efficacy endpoint. One hundred and fifty subjects received a quantitative electroencephalography exam and were randomized to either treatment as usual or PEER-informed pharmacotherapy. Subjects in the control group were treated according to Veterans Administration/Department of Defense Guidelines, the current standard of care. In the experimental group, the attending physician received a PEER report ranking the subject's likely clinical response to on-label medications. Results: In this post hoc interim analysis subjects were separated into Report Followed and Report Not Followed groups-based on the concordance between their subsequent treatment and PEER medication guidance. We thus evaluated the predictive validity of PEER recommendations. We found significantly greater improvements in depression scores (QIDS-SR16 P<0.03), reduction in suicidal ideation (Concise Health Risk Tracking Scale-SR7 P<0.002), and post-traumatic stress disorder (PTSD) score improvement (PTSD Checklist Military/Civilian P<0.04) for subjects treated with PEER-recommended medications compared to those who did not follow PEER recommendations. Conclusion: This interim analysis suggests that an objective tool such as PEER Interactive can help improve medication selection. Consistent with results of earlier studies, it supports the hypothesis that PEER-guided treatment offers distinct advantages over the current standard of care. C1 [Iosifescu, Dan V.] Icahn Sch Med Mt Sinai, Adult Psychopharmacol Program, Psychiat & Neurosci, New York, NY 10029 USA. [Neborsky, Robert J.] Univ Calif San Diego, Sch Med, San Diego, CA 92103 USA. [Neborsky, Robert J.] Univ Calif Los Angeles, Los Angeles, CA USA. [Neborsky, Robert J.] US Navy, Med Corps, Washington, DC USA. [Valuck, Robert J.] Univ Colorado, Pharm Epidemiol & Family Med, Denver, CO 80202 USA. [Valuck, Robert J.] Univ Colorado, Ctr Pharmaceut Outcomes Res, Denver, CO 80202 USA. [Valuck, Robert J.] Colorado Consortium Prescript Drug Abuse Prevent, Denver, CO USA. RP Iosifescu, DV (reprint author), Icahn Sch Med Mt Sinai, Psychiat & Neurosci, One Gustave L Levy Pl,Box 1230, New York, NY 10029 USA. EM dan.iosifescu@mssm.edu FU Dey Pharmaceuticals; Eli Lilly; Bristol Myers Squibb; MacNeil Pharmaceuticals; Icahn School of Medicine at Mount Sinai from Alkermes; AstraZeneca; Brainsway; Euthymics; Neosync; Roche; Shire FX Dr Neborsky serves as a medical advisor to CNS Response. He has served as paid faculty member for Dey Pharmaceuticals, Eli Lilly, Bristol Myers Squibb and has conducted investigator-initiated studies under a grant from MacNeil Pharmaceuticals.; Over the last 5 years, Dr Iosifescu has received research funding through Icahn School of Medicine at Mount Sinai from Alkermes, AstraZeneca, Brainsway, Euthymics, Neosync, Roche and Shire; he was a consultant to Avanir, Axsome, CNS Response, INSYS Therapeutics, Lundbeck, Otsuka, Servier, and Sunovion. NR 17 TC 0 Z9 0 U1 0 U2 0 PU DOVE MEDICAL PRESS LTD PI ALBANY PA PO BOX 300-008, ALBANY, AUCKLAND 0752, NEW ZEALAND SN 1178-2021 J9 NEUROPSYCH DIS TREAT JI Neuropsychiatr. Dis. Treat. PY 2016 VL 12 BP 2131 EP 2142 DI 10.2147/NDT.S113712 PG 12 WC Clinical Neurology; Psychiatry SC Neurosciences & Neurology; Psychiatry GA DU4VE UT WOS:000382209900001 PM 27601908 ER PT S AU Brown, CG Bowman, SR Hite, JK Freitas, JA Kub, FJ Eddy, CR Vurgaftman, I Meyer, JR Leach, JH Udwary, K AF Brown, Christopher G. Bowman, Steven R. Hite, Jennifer K. Freitas, Jaime A. Kub, Francis J. Eddy, Charles R., Jr. Vurgaftman, Igor Meyer, Jerry R. Leach, Jacob H. Udwary, Kevin BE Vodopyanov, KL Schepler, KL TI Frequency conversion in free-standing periodically oriented Gallium Nitride SO NONLINEAR FREQUENCY GENERATION AND CONVERSION: MATERIALS, DEVICES, AND APPLICATIONS XV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Nonlinear Frequency Generation and Conversion - Materials, Devices, and Applications XV CY FEB 15-17, 2016 CL San Francisco, CA SP SPIE DE Nonlinear optics; semiconductors; Gallium Nitride; Periodically Oriented GaN ID GAN AB Gallium nitride's (GaN) material properties of broadband transparency, high thermal conductivity, and wide-band gap make it a promising candidate for high-power frequency conversion devices. The strong internal polarization of GaN leads to large second-order nonlinearity, but conventional phase matching is prevented due to weak birefringence. To obtain efficient nonlinear optic frequency conversion, patterned inversion growth has been developed to induce quasiphase matching (QPM). We have fabricated and tested periodically oriented GaN (PO-GaN) devices to obtain QPM frequency conversion. This report discusses our recent measurements of second harmonic generation resonances for these devices. C1 [Brown, Christopher G.] Univ Res Fdn, 6411 Ivy Lane, Greenbelt, MD 20770 USA. [Bowman, Steven R.; Hite, Jennifer K.; Freitas, Jaime A.; Kub, Francis J.; Eddy, Charles R., Jr.; Vurgaftman, Igor; Meyer, Jerry R.] US Navy, Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA. [Leach, Jacob H.; Udwary, Kevin] Kyma Technol Inc, 8829 Midway West Rd, Raleigh, NC 27617 USA. RP Brown, CG (reprint author), Univ Res Fdn, 6411 Ivy Lane, Greenbelt, MD 20770 USA. NR 9 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 978-1-62841-966-5 J9 PROC SPIE PY 2016 VL 9731 AR UNSP 97310E DI 10.1117/12.2213447 PG 6 WC Materials Science, Multidisciplinary; Optics SC Materials Science; Optics GA BF5DD UT WOS:000381883700008 ER PT S AU Cunningham, PD Lane, PA Melinger, JS Esenturk, O Heilweil, EJ AF Cunningham, Paul D. Lane, Paul A. Melinger, Joseph S. Esenturk, Okan Heilweil, Edwin J. BE Anwar, MF Crowe, TW Manzur, T TI Probing Charge Transfer and Hot Carrier Dynamics in Organic Solar Cells with Terahertz Spectroscopy SO TERAHERTZ PHYSICS, DEVICES, AND SYSTEMS X: ADVANCED APPLICATIONS IN INDUSTRY AND DEFENSE SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Terahertz Physics, Devices, and Systems X - Advanced Applications in Industry and Defense CY APR 17-19, 2016 CL Baltimore, MD SP SPIE DE terahertz spectroscopy; carrier dynamics; organic solar cells ID POWER CONVERSION EFFICIENCY; TRANSFER EXCITONS; TRANSFER STATES; SEMICONDUCTORS; GENERATION; ENERGY; FILM AB Time-resolved terahertz spectroscopy (TRTS) was used to explore charge generation, transfer, and the role of hot carriers in organic solar cell materials. Two model molecular photovoltaic systems were investigated: with zinc phthalocyanine (ZnPc) or alpha-sexathiophene (alpha-6T) as the electron donors and buckminsterfullerene (C-60) as the electron acceptor. TRTS provides charge carrier conductivity dynamics comprised of changes in both population and mobility. By using time-resolved optical spectroscopy in conjunction with TRTS, these two contributions can be disentangled. The sub-picosecond photo-induced conductivity decay dynamics of C-60 were revealed to be caused by auto-ionization: the intrinsic process by which charge is generated in molecular solids. In donor-acceptor blends, the long-lived photo-induced conductivity is used for weight fraction optimization of the constituents. In nanoscale multi layer films, the photo-induced conductivity identifies optimal layer thicknesses. In films of ZnPc/C-60, electron transfer from ZnPc yields hot charges that localize and become less mobile as they theunalize. Excitation of high-lying Franck Condon states in C-60 followed by hole-transfer to ZnPc similarly produces hot charge carriers that self-localize; charge transfer clearly precedes carrier cooling. This picture is contrasted to charge transfer in alpha-6T/C-60, where hole transfer takes place from a theunalized state and produces equilibrium carriers that do not show characteristic signs of cooling and self-localization. These results illustrate the value of terahertz spectroscopic methods for probing charge transfer reactions. C1 [Cunningham, Paul D.; Lane, Paul A.; Melinger, Joseph S.] US Naval Res Lab, Washington, DC 20375 USA. [Esenturk, Okan] Middle East Tech Univ, Dept Chem, Ankara, Turkey. [Heilweil, Edwin J.] NIST, Gaithersburg, MD 20899 USA. RP Cunningham, PD (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM paul.cunningham@nrl.navy.mil OI Esenturk, Okan/0000-0001-6539-4344 NR 35 TC 0 Z9 0 U1 6 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 978-1-5106-0097-3 J9 PROC SPIE PY 2016 VL 9856 AR UNSP 98560Y DI 10.1117/12.2228379 PG 8 WC Optics; Physics, Applied SC Optics; Physics GA BF4WC UT WOS:000381729300016 ER PT S AU Gordon, DF Hasson, V von Bergmann, H Chen, YH Schmitt-Sody, A Penano, JR AF Gordon, Daniel F. Hasson, Victor von Bergmann, Hubertus Chen, Yu-hsin Schmitt-Sody, A. Penano, Joseph R. BE Rafailov, MK Mazur, E TI Advanced Concepts for High-Power, Short-Pulse CO2 Laser Development SO ULTRAFAST BANDGAP PHOTONICS SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ultrafast Bandgap Photonics CY APR 18-20, 2016 CL Baltimore, MD SP SPIE DE infrared laser; carbon dioxide laser; short pulse; terawatt ID LASER AB Ultra-short pulse lasers are dominated by solid-state technology, which typically operates in the near-infrared. Efforts to extend this technology to longer wavelengths are meeting with some success, but the trend remains that longer wavelengths correlate with greatly reduced power. The carbon dioxide (CO2) laser is capable of delivering high energy, 10 micron wavelength pulses, but the gain structure makes operating in the ultra-short pulse regime difficult. The Naval Research Laboratory and Air Force Research Laboratory are developing a novel CO2 laser designed to deliver similar to 1 Joule, similar to 1 picosecond pulses, from a compact gain volume (similar to 2x2x80 cm). The design is based on injection seeding an unstable resonator, in order to achieve high energy extraction efficiency, and to take advantage of power broadening. The unstable resonator is seeded by a solid state front end, pumped by a custom built titanium sapphire laser matched to the CO2 laser bandwidth. In order to access a broader range of mid infrared wavelengths using CO2 lasers, one must consider nonlinear frequency multiplication, which is non-trivial due to the bandwidth of the 10 micron radiation. C1 [Gordon, Daniel F.; Penano, Joseph R.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. [Hasson, Victor] Univ Arizona, Tucson, AZ USA. [von Bergmann, Hubertus] PaR Syst, Pretoria, South Africa. [Chen, Yu-hsin] Res Support Instruments, Lanham, MD USA. [Schmitt-Sody, A.] Air Force Res Lab, Albuquerque, NM USA. RP Gordon, DF (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA. NR 7 TC 0 Z9 0 U1 3 U2 3 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-5106-0076-8 J9 PROC SPIE PY 2016 VL 9835 AR UNSP 98350Z DI 10.1117/12.2223835 PG 5 WC Optics; Physics, Applied SC Optics; Physics GA BF5EQ UT WOS:000381933900014 ER PT S AU Hales, JM Khachatrian, A Roche, NJH Buchner, S Warner, J McMorrow, D AF Hales, Joel M. Khachatrian, Ani Roche, Nicolas J-H. Buchner, Stephen Warner, Jeffrey McMorrow, Dale BE Rafailov, MK Mazur, E TI Numerical approaches for predicting two-photon absorption induced single-event effects in semiconductors SO ULTRAFAST BANDGAP PHOTONICS SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ultrafast Bandgap Photonics CY APR 18-20, 2016 CL Baltimore, MD SP SPIE DE single event effect (SEE); two-photon absorption; radiation hardening; free-carrier absorption; free-carrier refraction; nonlinear optics; optical Kerr effect; silicon ID SILICON; LASER AB Two numerical approaches for determining the charge generated in semiconductors via two-photon absorption (2PA) under conditions relevant for laser-based single-event effects (SEE) experiments are presented. The first approach uses a simple analytical expression incorporating a small number of experimental/material parameters while the second approach employs a comprehensive beam propagation method that accounts for all the complex nonlinear optical (NLO) interactions present. The impact of the excitation conditions, device geometry, and specific NLO interactions on the resulting collected charge in silicon devices is also discussed. These approaches can provide value to the radiation-effects community by predicting the impacts that varying experimental parameters will have on 2PA SEE measurements. C1 [Hales, Joel M.; Khachatrian, Ani; Roche, Nicolas J-H.; Buchner, Stephen; Warner, Jeffrey; McMorrow, Dale] Naval Res Lab, Code 6816, Washington, DC 20375 USA. [Hales, Joel M.; Khachatrian, Ani] Sotera Def Solut, Annapolis Jct, MD 20701 USA. [Roche, Nicolas J-H.] George Washington Univ, Washington, DC 20052 USA. RP Hales, JM (reprint author), Naval Res Lab, Code 6816, Washington, DC 20375 USA.; Hales, JM (reprint author), Sotera Def Solut, Annapolis Jct, MD 20701 USA. NR 14 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 978-1-5106-0076-8 J9 PROC SPIE PY 2016 VL 9835 AR UNSP 98350B DI 10.1117/12.2223847 PG 7 WC Optics; Physics, Applied SC Optics; Physics GA BF5EQ UT WOS:000381933900004 ER PT S AU Young, S AF Young, Steve BE Rafailov, MK Mazur, E TI The Bulk Photovoltaic Effect as a Novel Mechanism for Sensing Devices and Applications SO ULTRAFAST BANDGAP PHOTONICS SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Ultrafast Bandgap Photonics CY APR 18-20, 2016 CL Baltimore, MD SP SPIE DE bulk photovoltaic; photogalvanic; ultrafast; photonics ID CRYSTALS; BATIO3; LINBO3; BIFEO3 AB The bulk photovoltaic effect describes the generation of photocurrents and photovoltages in bulk materials lacking a center of symmetry. Its principal mechanism is "shift current," a nonlinear-optical, inherently quantum mechanical process. While most attention has been devoted to its prospects as a means of solar energy capture, shift current bulk photovoltaic effect possesses a number of distinguishing features that make it well-suited to sensing and switching applications: photovoltages substantially exceeding the material's band gap, response amplitudes and directions that can depend on both photon energy and polarization, and response that occurs on ultrafast timescales. C1 [Young, Steve] US Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA. RP Young, S (reprint author), US Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA. EM steve.young.ctr@nrl.navy.mil NR 30 TC 0 Z9 0 U1 7 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 978-1-5106-0076-8 J9 PROC SPIE PY 2016 VL 9835 AR UNSP 98350P DI 10.1117/12.2225103 PG 8 WC Optics; Physics, Applied SC Optics; Physics GA BF5EQ UT WOS:000381933900007 ER PT J AU Alappattu, DP Wang, Q AF Alappattu, Denny P. Wang, Qing GP IEEE TI Evaporation and Elevated Duct Properties over the Subtropical Eastern Pacific Ocean Region Using MAGIC Data SO 2016 UNITED STATES NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM) LA English DT Proceedings Paper CT United-States-National-Committee of URSI National Radio Science Meeting (USNC-URSI NRSM) CY JAN 06-09, 2016 CL Boulder, CO SP URSI, United States Natl Comm C1 [Alappattu, Denny P.; Wang, Qing] Naval Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA. RP Alappattu, DP (reprint author), Naval Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8678-4 PY 2016 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BF4WJ UT WOS:000381740500009 ER PT J AU Webster, T AF Webster, Tegan GP IEEE TI Airborne Multistatic Polarimetric Radar Modeling SO 2016 UNITED STATES NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM) LA English DT Proceedings Paper CT United-States-National-Committee of URSI National Radio Science Meeting (USNC-URSI NRSM) CY JAN 06-09, 2016 CL Boulder, CO SP URSI, United States Natl Comm AB Previous work developed a data model and corresponding imaging operation for multistatic polarimetric radar with stationary transmitters and receivers and moving targets. This paper extends the model to an airborne multistatic polarimetric radar scenario and considers multiple moving transmitting and receiving platforms in addition to moving targets. The formulation results in an expression for the received data that may be coherently combined across receivers, represented in a global coordinate system. C1 [Webster, Tegan] Naval Res Lab, Div Radar, Washington, DC 20375 USA. RP Webster, T (reprint author), Naval Res Lab, Div Radar, 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 BN 978-1-4673-8678-4 PY 2016 PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BF4WJ UT WOS:000381740500034 ER PT S AU Beniam, I Mathews, SA Charipar, NA Auyeung, RCY Pique, A AF Beniam, Iyoel Mathews, Scott A. Charipar, Nicholas A. Auyeung, Raymond C. Y. Pique, Alberto BE Gu, B Helvajian, H Pique, A TI Laser Printing of 3D Metallic Interconnects SO LASER 3D MANUFACTURING III SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser 3D Manufacturing III CY FEB 15-18, 2016 CL San Francisco, CA SP SPIE, Polaronyx Inc, Nanoscribe Gmbh DE Additive Manufacturing; Laser Direct-Write; Laser-induced forward transfer (LIFT); Printing of metallic interconnects ID DIRECT-WRITE AB The use of laser-induced forward transfer (LIFT) techniques for the printing of functional materials has been demonstrated for numerous applications. The printing gives rise to patterns, which can be used to fabricate planar interconnects. More recently, various groups have demonstrated electrical interconnects from laser-printed 3D structures. The laser printing of these interconnects takes place through aggregation of voxels of either molten metal or of pastes containing dispersed metallic particles. However, the generated 3D structures do not posses the same metallic conductivity as a bulk metal interconnect of the same cross-section and length as those formed by wire bonding or tab welding. An alternative is to laser transfer entire 3D structures using a technique known as lase-and-place. Lase-and-place is a LIFT process whereby whole components and parts can be transferred from a donor substrate onto a desired location with one single laser pulse. This paper will describe the use of LIFT to laser print freestanding, solid metal foils or beams precisely over the contact pads of discrete devices to interconnect them into fully functional circuits. Furthermore, this paper will also show how the same laser can be used to bend or fold the bulk metal foils prior to transfer, thus forming compliant 3D structures able to provide strain relief for the circuits under flexing or during motion from thermal mismatch. These interconnect "bridges" can span wide gaps (on the order of a millimeter) and accommodate height differences of tens of microns between adjacent devices. Examples of these laser printed 3D metallic bridges and their role in the development of next generation electronics by additive manufacturing will be presented. C1 [Beniam, Iyoel; Mathews, Scott A.; Charipar, Nicholas A.; Auyeung, Raymond C. Y.; Pique, Alberto] Naval Res Lab, Div Mat Sci & Technol, Code 6364, Washington, DC 20375 USA. RP Pique, A (reprint author), Naval Res Lab, Div Mat Sci & Technol, Code 6364, Washington, DC 20375 USA. EM pique@nrl.navy.mil NR 12 TC 0 Z9 0 U1 4 U2 4 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-62841-973-3 J9 PROC SPIE PY 2016 VL 9738 AR UNSP 97380I DI 10.1117/12.2213646 PG 8 WC Optics; Physics, Applied SC Optics; Physics GA BF3YE UT WOS:000380605700010 ER PT S AU Smyrek, P Kim, H Zheng, Y Seifert, HJ Pique, A Pfleging, W AF Smyrek, P. Kim, H. Zheng, Y. Seifert, H. J. Pique, A. Pfleging, W. BE Gu, B Helvajian, H Pique, A TI Laser-printing and femtosecond laser-structuring of electrode materials for the manufacturing of 3D lithium-ion micro-batteries SO LASER 3D MANUFACTURING III SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Laser 3D Manufacturing III CY FEB 15-18, 2016 CL San Francisco, CA SP SPIE, Polaronyx Inc, Nanoscribe Gmbh DE Laser-direct write; laser-printing; femtosecond laser; laser-structuring; lithium-ion battery; lithium nickel manganese cobalt oxide; 3D micro-battery ID DIRECT-WRITE; MICROBATTERIES AB Recently, three-dimensional (3D) electrode architectures have attracted great interest for the development of lithium-ion micro-batteries applicable for Micro-Electro-Mechanical Systems (MEMS), sensors, and hearing aids. Since commercial available micro-batteries are mainly limited in overall cell capacity by their electrode footprint, new processing strategies for increasing both capacity and electrochemical performance have to be developed. In case of such standard microbatteries, two-dimensional (2D) electrode arrangements are applied with thicknesses up to 200 mu m. These electrode layers are composed of active material, conductive agent, graphite, and polymeric binder. Nevertheless, with respect to the type of active material, the active material to conductive agent ratio, and the film thickness, such thick-films suffer from low ionic and electronic conductivities, poor electrolyte accessibility, and finally, limited electrochemical performance under challenging conditions. In order to overcome these drawbacks, 3D electrode arrangements are under intense investigation since they allow the reduction of lithium-ion diffusion pathways in between interdigitated electrodes, even for electrodes with enhanced mass loadings. In this paper, we present how to combine laser-printing and femtosecond laser-structuring for the development of advanced 3D electrodes composed of Li(Ni1/3Mn1/3Co1/3)O-2 (NMC). In a first step, NMC thick-films were laser-printed and calendered to achieve film thicknesses in the range of 50 mu m -80 mu m. In a second step, femtosecond laser-structuring was carried out in order to generate 3D architectures directly into thick-films. Finally, electrochemical cycling of laser-processed films was performed in order to evaluate the most promising 3D electrode designs suitable for application in long life-time 3D micro-batteries. C1 [Smyrek, P.; Zheng, Y.; Seifert, H. J.; Pfleging, W.] Karlsruhe Inst Technol, IAM AWP, POB 3640, D-76021 Karlsruhe, Germany. [Kim, H.; Pique, A.] Naval Res Lab, Washington, DC 20375 USA. [Smyrek, P.; Pfleging, W.] Karlsruhe Nano Micro Facil, H von Helmholtz Pl 1, D-76344 Egg Leopoldshafen, Germany. RP Smyrek, P (reprint author), Karlsruhe Inst Technol, IAM AWP, POB 3640, D-76021 Karlsruhe, Germany.; Smyrek, P (reprint author), Karlsruhe Nano Micro Facil, H von Helmholtz Pl 1, D-76344 Egg Leopoldshafen, Germany. EM peter.smyrek@kit.edu NR 12 TC 0 Z9 0 U1 17 U2 17 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-1-62841-973-3 J9 PROC SPIE PY 2016 VL 9738 AR UNSP 973806 DI 10.1117/12.2211546 PG 5 WC Optics; Physics, Applied SC Optics; Physics GA BF3YE UT WOS:000380605700005 ER PT S AU Diaz, SA Breger, JC Medintz, IL AF Diaz, S. A. Breger, J. C. Medintz, I. L. BE Kumar, CV TI Monitoring Enzymatic Proteolysis Using Either Enzyme- or Substrate-Bioconjugated Quantum Dots SO RATIONAL DESIGN OF ENZYME-NANOMATERIALS SE Methods in Enzymology LA English DT Review; Book Chapter ID RESONANCE ENERGY-TRANSFER; TRANSFER RELAYS; CHEMOSELECTIVE LIGATION; NANOPARTICLES; PROTEIN; PHOSPHOTRIESTERASE; DONORS; FRET; ACCELERATION; BIOCATALYSIS AB Rational design of enzyme-nanoparticle hybrids is still in its infancy and the design is often inspired by potential access to many beneficial sensing properties such as increased stability, sensitivity, and even enhanced enzyme activities in specific cases. Deriving quantitative kinetic data from these constructs is not trivial, however, since the intrinsic design gives rise to unique properties that can influence the enzymatic assays that are central to the application of the hybrids. Here, we present two distinct assay methodologies for following the kinetic activity of composite enzyme-nanoparticle constructs. We utilize luminescent semiconductor nanocrystals or quantum dots (QDs) as the prototypical nanoparticulate platform for these sensing formats and target proteolytic enzyme activity as the main assay. The first assay is analogous to most current enzymatic assays and is designed to compare QD-enzyme constructs; this format is based on utilizing a fixed concentration of enzyme displayed on the QD and excess substrate in the solution, and the analysis utilizes data from initial velocities. The second assay is designed to analyze kinetics using a QD-substrate construct, in which the enzyme and QD interactions are short lived. Here, the nanoparticle-substrate concentration is held constant and exposed to increasing concentrations of the enzyme in solution. This later methodology is based on a fluorescent ratiometric signal that follows the entire progress curve of the enzyme reaction. A comparison of these two different assays of the series of enzyme-nanoparticle and substrate-nanoparticle constructs provides deeper insight into the enzyme kinetics of these hybrids, while still testing of individual variables within a given format, to allow for further optimization within each set. C1 [Diaz, S. A.; Breger, J. C.; Medintz, I. L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA. [Diaz, S. A.; Breger, J. C.] Amer Soc Engn Educ, Washington, DC USA. RP Medintz, IL (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA. EM Igor.medintz@nrl.navy.mil NR 67 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA SN 0076-6879 BN 978-0-12-804833-7; 978-0-12-804680-7 J9 METHOD ENZYMOL JI Methods Enzymol. PY 2016 VL 571 BP 19 EP 54 DI 10.1016/bs.mie.2016.01.001 PG 36 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Materials Science, Biomaterials SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Materials Science GA BF4SI UT WOS:000381639600003 PM 27112393 ER PT J AU Turcu, ICE Negoita, F Jaroszynski, DA Mckenna, P Balascuta, S Ursescu, D Dancus, I Cernaianu, MO Tataru, MV Ghenuche, P Stutman, D Boianu, A Risca, M Toma, M Petcu, C Acbas, G Yoffe, SR Noble, A Ersfeld, B Brunetti, E Capdessus, R Murphy, C Ridgers, CP Neely, D Mangles, SPD Gray, RJ Thomas, AGR Kirk, JG Ilderton, A Marklund, M Gordon, DF Hafizi, B Kaganovich, D Palastro, JP D'Humieres, E Zepf, M Sarri, G Gies, H Karbstein, F Schreiber, J Paulus, GG Dromey, B Harvey, C Di Piazza, A Keitel, CH Kaluza, MC Gales, S Zamfir, NV AF Turcu, I. C. E. Negoita, F. Jaroszynski, D. A. Mckenna, P. Balascuta, S. Ursescu, D. Dancus, I. Cernaianu, M. O. Tataru, M. V. Ghenuche, P. Stutman, D. Boianu, A. Risca, M. Toma, M. Petcu, C. Acbas, G. Yoffe, S. R. Noble, A. Ersfeld, B. Brunetti, E. Capdessus, R. Murphy, C. Ridgers, C. P. Neely, D. Mangles, S. P. D. Gray, R. J. Thomas, A. G. R. Kirk, J. G. Ilderton, A. Marklund, M. Gordon, D. F. Hafizi, B. Kaganovich, D. Palastro, J. P. D'Humieres, E. Zepf, M. Sarri, G. Gies, H. Karbstein, F. Schreiber, J. Paulus, G. G. Dromey, B. Harvey, C. Di Piazza, A. Keitel, C. H. Kaluza, M. C. Gales, S. Zamfir, N. V. TI HIGH FIELD PHYSICS AND QED EXPERIMENTS AT ELI-NP SO ROMANIAN REPORTS IN PHYSICS LA English DT Article DE Extreme Light; Ultra-intense Laser Pulses; High Field Physics; Quantum Electrodynamics ID NONLINEAR THOMSON SCATTERING; LASER-PLASMA INTERACTIONS; PONDEROMOTIVE ACCELERATION; RADIATION REACTION; ELECTRONS; IONIZATION; GENERATION; LIMIT; WAVE; ELECTRODYNAMICS AB ELI-NP facility will enable for the first time the use of two 10 PW laser beams for quantum electrodynamics (QED) experiments. The first beam will accelerate electrons to relativistic energies. The second beam will subject relativistic electrons to the strong electromagnetic field generating QED processes: intense gamma ray radiation and electron-positron pair formation. The laser beams will be focused to intensities above 10(21) Wcm(-2) and reaching 10(22)-10(23) Wcm(-2) for the first time. We propose to use this capability to investigate new physical phenomena at the interfaces of plasma, nuclear and particle physics at ELI-NP. This High Power Laser System Technical Design Report (HPLS-TDR2) presents the experimental area E6 at ELI-NP for investigating high field physics and quantum electrodynamics and the production of electron-positron-pairs and of energetic gamma-rays. The scientific community submitted 12 commissioning runs for E6 interaction chamber with two 10 PW laser beams and one proposal for the CETAL interaction chamber with 1 PW laser. The proposals are representative of the international high field physics community being written by 48 authors from 14 European and US organizations. The proposals are classified according to the science area investigated into: Radiation Reaction Physics: Classical and Quantum; Compton and Thomson Scattering Physics: Linear and Non Linear Regimes; QED in Vacuum; Atoms in Extreme Fields. Two pump-probe colliding 10 PW laser beams are proposed for the E6 interaction chamber. The focused pump laser beam accelerates the electrons to relativistic energies. The accelerated electron bunches interact with the very high electro-magnetic field of the focused probe laser beam. We propose two main types of experiments with: (a) gas targets in which the pump laser-beam is focused by a long focal length mirror and drives a wakefield in which the electron bunch is accelerated to multi-GeV energies and then exposed to the EM field of the probe laser which is tightly focused; (b) solid targets in which both the pump and probe laser beams are focused on the solid target, one accelerating the electrons in the solid and the other, delayed, providing the high electric field to which the relativistic electrons are subjected. We propose four main focusing configurations for the pump and probe laser beams, two for each type of target: counter-propagating 10 PW focused laser beams and the two 10 PW laser beams focused in the same direction. For solid targets we propose an additional configuration with plasma-mirror on the pump laser beam: the plasma mirror placed between the focusing mirror and target. It is proposed that the 10 PW laser beams will have polarization control and focus control by means of adaptive optics. Initially only one 10 PW may have polarization control and adaptive optics. In order to accommodate the two laser beams and diagnostics the proposed interaction chamber is quasi-octagonal with a diameter of 4.5 m. A large electron-spectrometer is proposed for multi-GeV electrons. Other diagnostics are requested for: gamma-rays, electrons and positrons, protons and ions, plasma characterization, transmitted and reflected laser beam. Targets will be provided by the ELI-NP Target Laboratory or purchased. The E6 experiments and diagnostics will benefit from the ELI-NP Electronics Laboratory, the Workshop and the Optics Laboratory. In order to ensure radiation-protection, a large beam-dump is planned for both multi-GeV electrons and multi-100 MeV protons. C1 [Turcu, I. C. E.; Negoita, F.; Balascuta, S.; Ursescu, D.; Dancus, I.; Cernaianu, M. O.; Tataru, M. V.; Ghenuche, P.; Stutman, D.; Boianu, A.; Risca, M.; Toma, M.; Petcu, C.; Acbas, G.; Gales, S.; Zamfir, N. V.] Horia Hulubei Natl Inst Phys & Nucl Engn, ELI NP, 30 Reactorului St, RO-077125 Bucharest, Romania. [Turcu, I. C. E.; Neely, D.] STFC Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England. [Jaroszynski, D. A.; Mckenna, P.; Yoffe, S. R.; Noble, A.; Ersfeld, B.; Brunetti, E.; Capdessus, R.; Gray, R. J.] Univ Strathclyde, SUPA, Dept Phys, Glasgow G4 0NG, Lanark, Scotland. [Stutman, D.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Murphy, C.; Ridgers, C. P.] Univ York, Dept Phys, York YO10 5D, N Yorkshire, England. [Mangles, S. P. D.] Imperial Coll, Blackett Lab, London SW7 2BZ, England. [Thomas, A. G. R.] Univ Michigan, Ctr Ultrafast Opt Sci, Ann Arbor, MI 48109 USA. [Kirk, J. G.; Di Piazza, A.; Keitel, C. H.] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany. [Ilderton, A.; Marklund, M.] Chalmers, Dept Phys, SE-41296 Gothenburg, Sweden. [Gordon, D. F.; Hafizi, B.; Kaganovich, D.; Palastro, J. P.] Naval Res Lab, Washington, DC 20375 USA. [D'Humieres, E.] Univ Bordeaux, CNRS, CEA, CELIA, F-33405 Talence, France. [Zepf, M.; Gies, H.; Karbstein, F.; Paulus, G. G.; Kaluza, M. C.] Helmholtz Inst Jena, Frobelstieg 3, D-07743 Jena, Germany. [Zepf, M.; Gies, H.; Paulus, G. G.; Kaluza, M. C.] Univ Jena, Max Wien Pl 1, D-07743 Jena, Germany. [Zepf, M.; Sarri, G.; Dromey, B.; Harvey, C.] Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland. [Schreiber, J.] Univ Munich, Fak Phys, D-85748 Garching, Germany. [Schreiber, J.] Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany. RP Turcu, ICE (reprint author), Horia Hulubei Natl Inst Phys & Nucl Engn, ELI NP, 30 Reactorului St, RO-077125 Bucharest, Romania.; Turcu, ICE (reprint author), STFC Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England. EM edmond.turcu@eli-np.ro RI Ursescu, Daniel/F-2216-2010; Ghenuche, Petru /J-3535-2012; Stutman, Dan/P-4048-2015 OI Ursescu, Daniel/0000-0002-0612-670X; FU Project Extreme Light Infrastructure Nuclear Physics (ELI-NP) - Phase I; European Union through the European Regional Development Fund; Romanian Government FX The work was supported by the Project Extreme Light Infrastructure Nuclear Physics (ELI-NP) - Phase I, a project co-financed by the Romanian Government and European Union through the European Regional Development Fund. NR 110 TC 7 Z9 7 U1 27 U2 33 PU EDITURA ACAD ROMANE PI BUCURESTI PA CALEA 13 SEPTEMBRIE NR 13, SECTOR 5, BUCURESTI 050711, ROMANIA SN 1221-1451 EI 1841-8759 J9 ROM REP PHYS JI Rom. Rep. Phys. PY 2016 VL 68 SU 1 BP S145 EP S231 PG 87 WC Physics, Multidisciplinary SC Physics GA DS2LT UT WOS:000380601700005 ER PT J AU Meierding, E AF Meierding, Emily TI Dismantling the Oil Wars Myth SO SECURITY STUDIES LA English DT Article ID UNITED-STATES; INTERSTATE; SECURITY; STRATEGY; WEAPON; FORCE; POWER AB This article argues that, contrary to the assumptions of international relations scholars, policymakers, and the general public, states do not engage in oil wars. A twofold strategy is employed to support this assertion. First, the article scrutinizes the logical underpinnings of oil war claims, arguing that proponents have underestimated the obstacles to seizing and exploiting foreign resources and, consequently, exaggerated the likelihood of oil wars. Second, the article examines four conflicts that are commonly identified as international oil wars: Japan's attack on the Dutch East Indies in World War II, Iraq's invasion of Kuwait, the Iran-Iraq War, and the Chaco War between Bolivia and Paraguay. It finds that the desire to control additional oil resources was not the fundamental cause of aggression in any of these conflicts. In the latter two cases, aggression was unconnected to oil interests. In the former, states fought for their survival, not for an oil prize. C1 [Meierding, Emily] Naval Postgraduate Sch, Monterey, CA 93943 USA. RP Meierding, E (reprint author), Naval Postgraduate Sch, Monterey, CA 93943 USA. NR 121 TC 1 Z9 1 U1 4 U2 4 PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD PI ABINGDON PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0963-6412 EI 1556-1852 J9 SECUR STUD JI Secur. Stud. PY 2016 VL 25 IS 2 BP 258 EP 288 DI 10.1080/09636412.2016.1171968 PG 31 WC International Relations SC International Relations GA DR9PI UT WOS:000380228200003 ER PT B AU Kumar, A Ben-Tzvi, P Snyder, M AF Kumar, Anil Ben-Tzvi, Pinhas Snyder, Murray GP ASME TI UAV-BASED WIRELESS TELEMETRY SYSTEM FOR THE ESTIMATION OF SHIP AIR WAKE PATTERNS SO INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 9 LA English DT Proceedings Paper CT ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference CY AUG 02-05, 2015 CL Boston, MA SP ASME, Design Engn Div, ASME, Comp & Informat Engn Div ID SIMULATION AB This paper presents the development of a wireless instrumentation system for estimation of air turbulence patterns in real-time. The proposed system uses off-the-shelf RC helicopter flying in wind turbulent regions and uses the oscillations caused by wind gusts to measure turbulence. This paper presents the proposed system as a tool to measure off board ship air wake patterns generated by a cruising naval patrol craft. Two aviation grade Inertial Navigation Systems (INS) with onboard filters are used in this system. These filters precisely measure the dynamics and the location of the helicopter with respect to the vessel. The data is then wirelessly transmitted to a base station on the vessel where Back Propagation neural networks are used to remove the effects of pilot inputs from vibrational data in real time to extract the oscillations caused by the turbulence alone. The system was tested in Chesapeake Bay in a wide range of wind conditions and the results are shown as air wake intensity patterns plotted on helicopter trajectory around the cruising vessel. The proposed system will be used for experimental validation of CFD models to predict ship air wakes. C1 [Kumar, Anil; Ben-Tzvi, Pinhas; Snyder, Murray] George Washington Univ, Washington, DC 20052 USA. [Snyder, Murray] US Naval Acad, Annapolis, MD 21402 USA. RP Kumar, A (reprint author), George Washington Univ, Washington, DC 20052 USA. NR 23 TC 0 Z9 0 U1 3 U2 3 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5719-9 PY 2016 AR V009T07A092 PG 7 WC Engineering, Biomedical; Engineering, Mechanical SC Engineering GA BF1NX UT WOS:000380413900092 ER PT B AU Yoo, J Restorff, JB Wun-Fogle, M AF Yoo, JinHyeong Restorff, James B. Wun-Fogle, Marilyn GP ASME TI NON-CONTACT TENSION SENSING USING FE-GA ALLOY STRIP SO ASME CONFERENCE ON SMART MATERIALS, ADAPTIVE STRUCTURES AND INTELLIGENT SYSTEMS, 2015, VOL 2 LA English DT Proceedings Paper CT ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems CY SEP 21-23, 2015 CL Colorado Springs, CO SP ASME, Aerospace Div ID MAGNETOSTRICTIVE PROPERTIES AB This paper describes a proof-of-concept non-contact strain sensor, using a magnetostrictive Fe-Ga alloy (Galfenol). Magnetostrictive materials demonstrate dimensional changes in response to a magnetic field. In contrast with typical piezoceramic materials, Galfenol is the most ductile of the current transduction materials and appears to have an excellent ability to withstand mechanical shock and tension. Galfenol also exhibits the inverse (Villari) effect: both the magnetization and permeability change in response to an applied stress. Galfenol has low hysteresis loses, less than similar to 10% of its transduction potential over a range of -20 to +80 degrees C. The magnetization's response to stress depends strongly on both magnetic field bias and alloy composition. Galfenol's Villari effect can be used in various sensor configurations together with either a giant magnetoresistance (GMR) sensor, Hall Effect sensor or pickup coil to sense the magnetization / permeability changes in Galfenol when stressed. The sensor described in this paper utilizes the permeability change, which is not time dependent and can measure static loads. The design reported here targets low force, low frequency applications, such as inclination measurements and stress monitoring. The sensor was able to measure both static and dynamic stress. The static sensitivity was +3.64 Oe/kN for the Hall sensor close to the bias magnet and -1.49 Oe/kN for the Hall sensor at the other end of the Galfenol strip. We conclude that a Galfenol strain sensor is a viable candidate for bolt stress monitoring in critical applications. C1 [Yoo, JinHyeong] US Army Res Lab, Aberdeen Proving Ground, MD USA. [Restorff, James B.; Wun-Fogle, Marilyn] US Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD USA. RP Yoo, J (reprint author), US Army Res Lab, Aberdeen Proving Ground, MD USA. NR 3 TC 0 Z9 0 U1 3 U2 3 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5730-4 PY 2016 AR V002T04A008 PG 5 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BF0YF UT WOS:000379884200008 ER PT B AU Davis, JD Kutzer, MD Chirikjian, GS AF Davis, Joshua D. Kutzer, Michael D. Chirikjian, Gregory S. GP ASME TI ALGORITHMS FOR MULTILAYER CONFORMAL ADDITIVE MANUFACTURING SO INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 1A LA English DT Proceedings Paper CT ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference CY AUG 02-05, 2015 CL Boston, MA SP ASME, Design Engn Div, ASME, Comp & Informat Engn Div AB Despite the rapid advance of additive manufacturing technologies in recent years, methods to fully encase objects with multilayer, thick features are still undeveloped. This issue can be overcome by printing layers conformally about an object's natural geometry, as opposed to current methods that utilize planar layering. With this mindset, two new methods are derived to generate uniformly distributed layers between initial and desired geometries in both two and three dimensions. The first method is based on variable offset curves and can only be applied to convex or star-convex geometries. The second method is based on manipulated solutions to Laplace's equation and is applicable to all geometries. Using each method, we present examples of layer generation for several geometries of varying convexities. Results are compared, and the respective advantages and limitations of each method are discussed. C1 [Davis, Joshua D.; Chirikjian, Gregory S.] Johns Hopkins Univ, Robot & Prot Kinemat Lab, Dept Mech Engn, Baltimore, MD 21218 USA. [Kutzer, Michael D.] US Naval Acad, Weap & Syst Engn, Annapolis, MD 21401 USA. RP Davis, JD (reprint author), Johns Hopkins Univ, Robot & Prot Kinemat Lab, Dept Mech Engn, Baltimore, MD 21218 USA. EM jdavi160@jhu.edu; kutzer@usna.edu; gregc@jhu.edu 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 978-0-7918-5704-5 PY 2016 AR V01AT02A028 PG 10 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial; Engineering, Manufacturing; Engineering, Mechanical SC Computer Science; Engineering GA BF0XY UT WOS:000379883000028 ER PT B AU Iliopoulos, A Michopoulos, JG AF Iliopoulos, Athanasios Michopoulos, John G. GP ASME TI TOWARDS CRACK TRAJECTORY IDENTIFICATION VIA THE DIRECT STRAIN IMAGING METHOD SO INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 1A LA English DT Proceedings Paper CT ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference CY AUG 02-05, 2015 CL Boston, MA SP ASME, Design Engn Div, ASME, Comp & Informat Engn Div ID FINITE-ELEMENT-METHOD; LEVEL SETS; GROWTH; FRACTURE; IMPLEMENTATION; CRITERION; DISPLACEMENT; PROPAGATION; TIP AB In this paper we present an investigation on the feasibility of exploiting the Direct Strain Imaging (DSI) method for the purpose of tracking propagating discontinuities on the surface of a deformable body under mechanical load. The proposed approach is based on a strain compatibility functional that does not require any assumptions about the continuity conditions of the underlying medium. The proposed approach is based on the recently introduced Direct Strain Imaging method that is used to identify with high accuracy the full fields of strain tensor components that are required to define the strain compatibility functional. We performed synthetic numerical experiments based on the exercising the eXtended Finite Element Method solution for simulating a propagating crack of a particular problem in order to assess the feasibility and potential of the proposed approach. We demonstrated that indeed our DSI-based approach can achieve a very accurate determination of the crack trajectory even under noisy conditions. C1 [Iliopoulos, Athanasios] George Mason Univ, Computat Mat Sci Ctr, Fairfax, VA 22030 USA. [Iliopoulos, Athanasios] US Navy, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA. [Michopoulos, John G.] US Navy, Ctr Computat Mat Sci, Computat Multiphys Syst Lab, Washington, DC 20375 USA. RP Iliopoulos, A (reprint author), George Mason Univ, Computat Mat Sci Ctr, Fairfax, VA 22030 USA.; Iliopoulos, A (reprint author), US Navy, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA. NR 61 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 978-0-7918-5704-5 PY 2016 AR V01AT02A060 PG 11 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial; Engineering, Manufacturing; Engineering, Mechanical SC Computer Science; Engineering GA BF0XY UT WOS:000379883000060 ER PT B AU Iliopoulos, A Michopoulos, JG Lambrakos, S AF Iliopoulos, Athanasios Michopoulos, John G. Lambrakos, Samuel GP ASME TI TOWARDS INVERSE ESTIMATION OF PROPERTIES, PROCESS PARAMETERS AND RESIDUAL EFFECTS FOR FRICTION STIR WELDING SO INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 1A LA English DT Proceedings Paper CT ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference CY AUG 02-05, 2015 CL Boston, MA SP ASME, Design Engn Div, ASME, Comp & Informat Engn Div ID ALUMINUM-ALLOY 6061-T6; NUMERICAL-SIMULATION; HEAT-TRANSFER; STRESSES; MODEL; OPTIMIZATION; TEMPERATURE; DISTORTION; ZONE AB Forward and inverse modeling of the friction stir welding (FSW) process is an important endeavor that can be used to optimize process parameters that play a significant role on achieving manufactured part specification requirements. One such requirement is the minimization of permanent deformation induced by the plastically deformed zone close and inside the stirred zone. However, at the same time modeling FSW requires the estimation of process parameters that are not directly measurable. In this work we present a computational framework for applying an inverse approach for the heat conduction equation with experimentally guided volume heat source term that can be used to identify such parameters and subsequently use them for solving the associated forward coupled thermo-plastic problem in a Lagrangian frame of reference. We demonstrate the versatility of our framework by determining the feasibility of determining plastic (and hence residual) deformation. C1 [Iliopoulos, Athanasios] George Mason Univ, Computat Mat Sci Ctr, Fairfax, VA 22030 USA. [Iliopoulos, Athanasios] Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA. [Michopoulos, John G.; Lambrakos, Samuel] Naval Res Lab, Ctr Computat Mat Sci, Computat Multiphys Syst Lab, Washington, DC 20375 USA. RP Iliopoulos, A (reprint author), George Mason Univ, Computat Mat Sci Ctr, Fairfax, VA 22030 USA.; Iliopoulos, A (reprint author), Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA. NR 65 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5704-5 PY 2016 AR V01AT02A059 PG 12 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial; Engineering, Manufacturing; Engineering, Mechanical SC Computer Science; Engineering GA BF0XY UT WOS:000379883000059 ER PT B AU Komninelli, F Iliopoulos, A Michopoulos, JG AF Komninelli, Foteini Iliopoulos, Athanasios Michopoulos, John G. GP ASME TI TOWARDS IDENTIFICATION OF LOWER SCALE COMPOSITE MATERIAL PROPERTIES FROM HIGHER SCALE EXPERIMENTAL DATA VIA INVERSE ANALYSIS OF COUPLED MULTISCALE MODELS SO INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 1A LA English DT Proceedings Paper CT ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference CY AUG 02-05, 2015 CL Boston, MA SP ASME, Design Engn Div, ASME, Comp & Informat Engn Div ID ELLIPSOIDAL INCLUSION; STRAIN-MEASUREMENT; ELASTIC FIELD; HOMOGENIZATION; OPTIMIZATION; DISPLACEMENT; FORMULAS; TENSOR AB In the present paper we demonstrate the application of a multi scale inverse methodology for identifying material properties of the constituents of a selected composite material with long fibers embedded in a polymer matrix by utilizing macro-scale experimental data. Taking advantage of a computational homogenization technique for periodic microstructures, the proposed optimization methodology allows, for the determination of a considerable number of the elastic properties of the composite material at the micro-scale of the constituents and their interface zone. Our approach describes the theoretical development and numerical implementation of a multi-scale modeling chain of the composite, extending from the periodic microstructure represented by a suitable unit cell and subjected to appropriate periodic boundary conditions at the micro scale, to the composite lamina at the meso-scale, to the laminated, multi-axially loaded material at the macro-scale. By applying the proposed methodology, we have been able to accurately calculate several fiber, matrix properties by utilizing properly generated synthetic data of the macro-scale behavior of the composite laminate. Furthermore, in an effort to explore the potential of our method for identifying quantities that manifest only after manufacturing including damage quantities at the micro-scale, we have initiated an effort to explore the capability of determining fiber-matrix interfacial properties and have demonstrated initial success. C1 [Komninelli, Foteini; Iliopoulos, Athanasios] George Mason Univ, Computat Mat Sci Ctr, Fairfax, VA 22030 USA. [Komninelli, Foteini; Iliopoulos, Athanasios] Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA. [Michopoulos, John G.] Naval Res Lab, Ctr Computat Mat Sci, Computat Multiphys Syst Lab, Washington, DC 20375 USA. RP Komninelli, F (reprint author), George Mason Univ, Computat Mat Sci Ctr, Fairfax, VA 22030 USA.; Komninelli, F (reprint author), Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA. NR 45 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 978-0-7918-5704-5 PY 2016 AR V01AT02A061 PG 12 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial; Engineering, Manufacturing; Engineering, Mechanical SC Computer Science; Engineering GA BF0XY UT WOS:000379883000061 ER PT B AU Steuben, J Michopoulos, JG Iliopoulos, A Turner, C AF Steuben, John Michopoulos, John G. Iliopoulos, Athanasios Turner, Cameron GP ASME TI TOWARDS REAL-TIME COMPOSITE MATERIAL CHARACTERIZATION USING SURROGATE MODELS AND GPGPU COMPUTING SO INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 1A LA English DT Proceedings Paper CT ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference CY AUG 02-05, 2015 CL Boston, MA SP ASME, Design Engn Div, ASME, Comp & Informat Engn Div ID VIRTUAL FIELDS METHOD; SIMPLEX-METHOD; IDENTIFICATION; DISPLACEMENT; STIFFNESSES AB In this paper we address the particular need for high-speed or "real-time" characterization of realistic anisotropic material systems such as laminated composites. This is driven by the desire to dynamically alter the loading paths applied by a multiaxial robotic test frame during the testing of a specimen, so that strain states are developed in the specimen in a manner that activates the maximum excitation of the specimen's constitutive properties. In order to achieve this goal, we present an evolutionary adaptation of earlier work into computationally efficient material characterization using response-surface surrogate models. This approach is enhanced by the adoption of highly-parallel General Purpose Graphics Processing (GPGPU) computing. We discuss the challenges of adapting the characterization problem for GPGPU computing, particularly in terms of parallelization, synchronization, and approximation. Two parallelized algorithms for characterization are developed, and the merits of each are discussed. We then demonstrate validation results on a simple linear-elastic material system, and present statistical data which demonstrate the robustness of the approach in the presence of experimental noise. We conclude with remarks regarding the performance of the GPGPU-enabled characterization algorithm, and its applicability to more complex material systems. C1 [Steuben, John; Michopoulos, John G.] Naval Res Lab, Ctr Computat Mat Sci, Computat Multiphys Syst Lab, Washington, DC 20375 USA. [Iliopoulos, Athanasios] George Mason Univ, Computat Mat Sci Ctr, Fairfax, VA 22030 USA. [Iliopoulos, Athanasios] Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA. [Turner, Cameron] Colorado Sch Mines, Coll Engn & Comp Sci, Golden, CO 80401 USA. RP Steuben, J (reprint author), Naval Res Lab, Ctr Computat Mat Sci, Computat Multiphys Syst Lab, Washington, DC 20375 USA. NR 44 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 978-0-7918-5704-5 PY 2016 AR V01AT02A058 PG 13 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial; Engineering, Manufacturing; Engineering, Mechanical SC Computer Science; Engineering GA BF0XY UT WOS:000379883000058 ER PT B AU Wimmer, SA DeGiorgi, VG Gorzkowski, E AF Wimmer, Stephanie A. DeGiorgi, Virginia G. Gorzkowski, Edward GP ASME TI MODELING THE LAMINATION OF A MULTILAYERED TAPE CAST CERAMIC COMPONENT WITH FUGITIVE PHASES BEFORE SINTERING SO INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 1A LA English DT Proceedings Paper CT ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference CY AUG 02-05, 2015 CL Boston, MA SP ASME, Design Engn Div, ASME, Comp & Informat Engn Div AB A small finished ceramic component with micro-channels or other complex geometry requires a high degree of dimensional accuracy. The accuracy of the finished ceramic component depends upon the accuracy of the unfired ceramic body before sintering. One approach to creating micro-channels in ceramics is the fugitive phase approach. In this approach a sacrificial material is placed within the unfired ceramic to form channels or voids. The fugitive phase is removed or sacrificed during the subsequent sintering. For this paper, the authors examine the lamination step of the fugitive phase approach computationally. In the lamination step layers of unfired tape cast ceramic and layers of fugitive phase material are pressed together before sintering. The geometry examined in this paper is a quarter-symmetry model of a ten ceramic layer and nine fugitive phase layer structure. Three dimensional modeling is used to capture out of plane motion, displacement of the fugitive phase pieces, viscoelastic deformation, and rebounding when the layered structure is removed from the die press. The unfired ceramic is modeled as tape cast mullite and the fugitive phase is paper. The fugitive phase is modeled as linear elastic while the unfired ceramic is modeled as viscoelastic at a range of temperatures. The authors examine the filling of voids, pressure gradients, and conditions during unloading. C1 [Wimmer, Stephanie A.; DeGiorgi, Virginia G.; Gorzkowski, Edward] Naval Res Lab, Washington, DC 20375 USA. RP Wimmer, SA (reprint author), Naval Res Lab, Washington, DC 20375 USA. NR 11 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 978-0-7918-5704-5 PY 2016 AR V01AT02A064 PG 8 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial; Engineering, Manufacturing; Engineering, Mechanical SC Computer Science; Engineering GA BF0XY UT WOS:000379883000064 ER PT J AU Rendon, JM Rendon, RG AF Rendon, Juanita M. Rendon, Rene G. TI Procurement fraud in the US Department of Defense Implications for contracting processes and internal controls SO MANAGERIAL AUDITING JOURNAL LA English DT Article DE Internal controls; Fraud; Auditability theory; Contract management AB Purpose - This paper aims to explore selected real-world procurement fraud incidents in the US Department of Defense (DoD) and the implications of these incidents to the DoD's contracting processes and internal controls. Design/methodology/approach - This paper analyzes actual procurement fraud incidents and identifies in which phase of the contract management process the fraud occurred and which internal control component was associated with the fraud scheme. Findings - The fraud incidents generally occurred during the source selection and the contract administration phases and involved the control activities, monitoring and control environment components of internal control. Research limitations/implications - The fraud incidents are analyzed using contract management and internal control frameworks adopted by the US Government. Recommendations are developed for improving contracting processes and internal controls as an approach to deterring and detecting procurement fraud and may be applicable to other international public procurement bodies. Practical implications - Governments are ensuring auditability in public procurement as a means of improving agency governance. The research findings suggest that an emphasis on capable contracting processes and effective internal controls should be adopted for fighting procurement fraud. Social implications - Ensuring auditability in public procurement has a far-reaching effect in society. The value of capable processes and effective internal controls is gaining much attention in public agencies, as they strive for accountability, integrity and transparency in their governance processes. Originality/value - By emphasizing capable processes and effective internal controls, governments can apply a strategic approach to detecting and deterring fraud and thus ensure that government monies are spent in the most effective and efficient ways. C1 [Rendon, Juanita M.; Rendon, Rene G.] US Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA. RP Rendon, RG (reprint author), US Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA. EM rgrendon@nps.edu NR 59 TC 0 Z9 0 U1 5 U2 5 PU EMERALD GROUP PUBLISHING LTD PI BINGLEY PA HOWARD HOUSE, WAGON LANE, BINGLEY BD16 1WA, W YORKSHIRE, ENGLAND SN 0268-6902 EI 1758-7735 J9 MANAG AUDIT J JI Manag. Audit. J. PY 2016 VL 31 IS 6-7 BP 748 EP 767 DI 10.1108/MAJ-11-2015-1267 PG 20 WC Business, Finance SC Business & Economics GA DR3UH UT WOS:000379827600008 ER PT S AU Yen, J Sengupta, D AF Yen, Jim Sengupta, Dhiman GP Inst Navigat TI Long Distance Time Transfer using Time Reversal ((TR)-R-3) SO PROCEEDINGS OF THE 47TH ANNUAL PRECISE TIME AND TIME INTERVAL SYSTEMS AND APPLICATIONS MEETING SE Annual Precise Time and Time Interval Systems and Applications Meeting LA English DT Proceedings Paper CT 47th Annual Precise Time and Time Interval Systems and Applications Meeting (PTTI) / International Technical Meeting of the-Institute-of-Navigation CY JAN 25-28, 2016 CL Monterey, CA SP Inst Navigat AB Time transfer techniques currently utilized by the public and private sectors rely heavily on external infrastructure, such as physical links or satellites. Time Transfer using Time Reversal ((TR)-R-3) technique, pioneered by Dr. Eung-Gi Paek, is medium agnostic, therefore the technique can be applied to High Frequency (HF) radio waves. The use of HF radio waves allows long distance communications that is independent of any external infrastructure. In this paper, a long distance implementation of the (TR)-R-3 technique was demonstrated to compare the (TR)-R-3 technique to currently utilized time transfer techniques. This research effort was funded by DARPA. C1 [Yen, Jim; Sengupta, Dhiman] US Naval Res Lab, Washington, DC 20375 USA. RP Yen, J (reprint author), US Naval Res Lab, Washington, DC 20375 USA. NR 4 TC 0 Z9 0 U1 1 U2 1 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 USA SN 2333-2085 J9 ANN TIME TIME INTERV PY 2016 BP 99 EP 106 PG 8 WC Instruments & Instrumentation; Remote Sensing; Telecommunications SC Instruments & Instrumentation; Remote Sensing; Telecommunications GA BF0XQ UT WOS:000379858000014 ER PT B AU Segala, DB Wettergren, TA AF Segala, David B. Wettergren, Thomas A. GP ASME TI PARAMETER EXPLORATION IN ACOUSTIC SCATTERING MODEL WITH LIMITED MODEL INFORMATION SO PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2015, VOL 4A LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition (IMECE2015) CY NOV 13-19, 2015 CL Houston, TX SP ASME ID INTERPOLATION METHODS AB In this paper, we fit we explore three different model approximation schemes in order to determine a representative model of measured data. As in many experimental settings where complex phenomenon is challenging to capture, limited sampled points of the physical process are known. However, there is knowledge of an upper and lower bounding solution. In the case where only the sampled points are known, a polynomial fit of order four (with only 5 known sampled points) produces a very crude fit with the largest amount of error. An average of the bounding solutions is able to provide a more accurate fit but still moderately crude. Finally, it is shown that the convex hull of the bounding solution with the sampled points is able to provide a fit with the least amount of error. We demonstrate this by predicting the target strength of an unknown acoustically scattering rigid sphere which is sampled at equally spaced frequencies over a vast range of frequency values. C1 [Segala, David B.; Wettergren, Thomas A.] Naval Undersea Warfare Ctr, DIVNPT, 1176 Howell St, Newport, RI 02841 USA. RP Segala, DB (reprint author), Naval Undersea Warfare Ctr, DIVNPT, 1176 Howell St, Newport, RI 02841 USA. EM david.segala@navy.mil NR 8 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 978-0-7918-5739-7 PY 2016 AR V04AT04A040 PG 6 WC Engineering, Mechanical SC Engineering GA BF0WS UT WOS:000379703200040 ER PT B AU Duddu, R Kota, N Qidwai, S AF Duddu, Ravindra Kota, Nithyanand Qidwai, Siddiq GP ASME TI AN EXTENDED FINITE ELEMENT MODEL OF CREVICE AND PITTING CORROSION SO PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2015, VOL 9 LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition (IMECE2015) CY NOV 13-19, 2015 CL Houston, TX SP ASME ID STAINLESS-STEEL; LOCALIZED CORROSION; MATHEMATICAL-MODEL; PIT PROPAGATION; ALUMINUM-ALLOYS; MASS-TRANSPORT; CRACK-GROWTH; DIFFUSION; DISSOLUTION AB A sharp interface model formulation is developed for simulating the electrochemical environment in crevices/pits due to galvanic corrosion in aqueous media. The concentration of ionic species and the electrical potential in the crevice is established using the non-dimensionalized Nernst-Planck equations along with the assumption of local electro-neutrality. The crevice/pit interface fluxes are defined in terms of the cathodic and anodic current densities using Butler-Volmer kinetics. The extended finite element method is used to discretize the governing equations and the level set function to describe the interface morphology independent of the underlying finite element mesh. The advantage of this formulation is that it eliminates the need for cumbersome mesh generation and remeshing when the interface morphology changes. Numerical investigations of steady-state intergranular crevice corrosion in idealized Al-Mg alloy microstructures in two-dimensions are conducted to establish the viability of the formulation. Simulation results predict large pH and chloride concentration within the crevice environment, which leads us to the conclusion that chemical reactions and precipitation play a prominent role during crevice corrosion. C1 [Duddu, Ravindra] Vanderbilt Univ, Dept Civil & Environm Engn, Nashville, TN 37212 USA. [Kota, Nithyanand] Leidos Corp, Mat Corros & Engn Technol, Arlington, VA 22203 USA. [Qidwai, Siddiq] US Naval Res Lab, Multifunct Mat Branch, Code 6350, Washington, DC 20375 USA. RP Duddu, R (reprint author), Vanderbilt Univ, Dept Civil & Environm Engn, Nashville, TN 37212 USA. EM ravindra.duddu@vanderbilt.edu; nithyanandkota@gmail.com; siddig.qidwai@nrl.navy.mil NR 30 TC 0 Z9 0 U1 3 U2 3 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5752-6 PY 2016 AR V009T12A021 PG 11 WC Engineering, Mechanical SC Engineering GA BF0XE UT WOS:000379791500021 ER PT J AU Xu, Q Wei, L Gao, JD Zhao, QY Nai, K Liu, S AF Xu, Qin Wei, Li Gao, Jidong Zhao, Qingyun Nai, Kang Liu, Shun TI Multistep variational data assimilation: important issues and a spectral approach SO TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY LA English DT Article DE data assimilation; variational analysis; multistep; multiscale; spectral formulation ID 3-DIMENSIONAL ERROR COVARIANCES; MEASURING INFORMATION-CONTENT; RANGE FORECAST ERRORS; STATISTICAL STRUCTURE; INNOVATION VECTORS; RADIOSONDE DATA; ANALYSIS SYSTEM; PART II; HEIGHT; FORMULATIONS AB In this paper, two important issues are raised for multistep variational data assimilation in which broadly distributed coarse-resolution observations are analysed in the first step, and then locally distributed high-resolution observations are analysed in the second step (and subsequent steps if any). The first one concerns how to objectively estimate or efficiently compute the analysis error covariance for the analysed field obtained in the first step and used to update the background field in the next step. To attack this issue, spectral formulations are derived for efficiently calculating the analysis error covariance functions. The calculated analysis error covariance functions are verified against their respective benchmarks for one- and two-dimensional cases and shown to be very (or fairly) good approximations for uniformly (or non-uniformly) distributed coarse-resolution observations. The second issue concerns whether and under what conditions the above calculated analysis error covariance can make the two-step analysis more accurate than the conventional single-step analysis. To answer this question, idealised numerical experiments are performed to compare the two-step analyses with their respective counterpart single-step analyses while the background error covariance is assumed to be exactly known in the first step but the number of iterations performed by the minimisation algorithm is limited (to mimic the computationally constrained situations in operational data assimilation). The results show that the two-step analysis is significantly more accurate than the single-step analysis until the iteration number becomes so large that the single-step analysis can reach the final convergence or nearly so. The two-step analysis converges much faster and thus is more efficient than the single-step analysis to reach the same accuracy. Its computational efficiency can be further enhanced by properly coarsening the grid resolution in the first step with the high-resolution grid used only over the nested domain in the second step. C1 [Xu, Qin; Gao, Jidong] NOAA, Natl Severe Storms Lab, Norman, OK 73069 USA. [Wei, Li; Nai, Kang] Univ Oklahoma, Cooperat Inst Mesoscale Meteorol Studies, Norman, OK 73019 USA. [Zhao, Qingyun] Naval Res Lab, Marine Meteorol Div, Monterey, CA USA. [Liu, Shun] Natl Ctr Environm Predict, Rockville, MD USA. [Liu, Shun] IM Syst Grp, Rockville, MD USA. RP Xu, Q (reprint author), NOAA, Natl Severe Storms Lab, Norman, OK 73069 USA. EM Qin.Xu@noaa.gov FU ONR [N000141410281]; NSF [AGS-1341878]; NOAA/Office of Oceanic and Atmospheric Research, U.S. Department of Commerce [NA11OAR4320072] FX The authors are thankful to Prof. S. Lakshmivarahan of the University of Oklahoma (OU) and the three anonymous reviewers for their comments and suggestions that improved the presentation of the paper. The research work was supported by the ONR Grant N000141410281 and NSF grant AGS-1341878 to OU. Funding was also provided to CIMMS by NOAA/Office of Oceanic and Atmospheric Research under NOAA-OU Cooperative Agreement #NA11OAR4320072, U.S. Department of Commerce. NR 19 TC 0 Z9 0 U1 1 U2 1 PU CO-ACTION PUBLISHING PI JARFALLA PA RIPVAGEN 7, JARFALLA, SE-175 64, SWEDEN SN 0280-6495 EI 1600-0870 J9 TELLUS A JI Tellus Ser. A-Dyn. Meteorol. Oceanol. PY 2016 VL 68 AR 31110 DI 10.3402/tellusa.v68.31110 PG 26 WC Meteorology & Atmospheric Sciences; Oceanography SC Meteorology & Atmospheric Sciences; Oceanography GA DR4ZW UT WOS:000379913600001 ER PT J AU Siskind, DE Nedoluha, GE Sassi, F Rong, PP Bailey, SM Hervig, ME Randall, CE AF Siskind, David E. Nedoluha, Gerald E. Sassi, Fabrizio Rong, Pingping Bailey, Scott M. Hervig, Mark E. Randall, Cora E. TI Persistence of upper stratospheric wintertime tracer variability into the Arctic spring and summer SO ATMOSPHERIC CHEMISTRY AND PHYSICS LA English DT Article ID ENERGETIC PARTICLE-PRECIPITATION; OZONE; TEMPERATURE; SIMULATION; MODEL; THERMOSPHERE; MESOSPHERE; ATMOSPHERE; SATELLITE; TRANSPORT AB Using data from the Aeronomy of Ice in the Mesosphere (AIM) and Aura satellites, we have categorized the interannual variability of winter- and springtime upper stratospheric methane (CH4). We further show the effects of this variability on the chemistry of the upper stratosphere throughout the following summer. Years with strong wintertime mesospheric descent followed by dynamically quiet springs, such as 2009, lead to the lowest summertime CH4. Years with relatively weak wintertime descent, but strong springtime planetary wave activity, such as 2011, have the highest summertime CH4. By sampling the Aura Microwave Limb Sounder (MLS) according to the occultation pattern of the AIM Solar Occultation for Ice Experiment (SOFIE), we show that summertime upper stratospheric chlorine monoxide (ClO) almost perfectly anticorrelates with the CH4. This is consistent with the reaction of atomic chlorine with CH4 to form the reservoir species, hydrochloric acid (HCl). The summertime ClO for years with strong, uninterrupted mesospheric descent is about 50aEuro-% greater than in years with strong horizontal transport and mixing of high CH4 air from lower latitudes. Small, but persistent effects on ozone are also seen such that between 1 and 2aEuro-hPa, ozone is about 4-5aEuro-% higher in summer for the years with the highest CH4 relative to the lowest. This is consistent with the role of the chlorine catalytic cycle on ozone. These dependencies may offer a means to monitor dynamical effects on the high-latitude upper stratosphere using summertime ClO measurements as a proxy. Additionally, these chlorine-controlled ozone decreases, which are seen to maximize after years with strong uninterrupted wintertime descent, represent a new mechanism by which mesospheric descent can affect polar ozone. Finally, given that the effects on ozone appear to persist much of the rest of the year, the consideration of winter/spring dynamical variability may also be relevant in studies of ozone trends. C1 [Siskind, David E.; Sassi, Fabrizio] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA. [Nedoluha, Gerald E.] Naval Res Lab, Remote Sensing Div, Washington, DC USA. [Rong, Pingping] Hampton Univ, Ctr Atmospher Sci, Hampton, VA 23668 USA. [Bailey, Scott M.] Virginia Tech, Bradley Dept Elect & Comp Engn, Blacksburg, VA USA. [Hervig, Mark E.] GATS Inc, Driggs, ID USA. [Randall, Cora E.] Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA. [Randall, Cora E.] Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA. RP Siskind, DE (reprint author), Naval Res Lab, Div Space Sci, Washington, DC 20375 USA. EM david.siskind@nrl.navy.mil RI Randall, Cora/L-8760-2014; OI Randall, Cora/0000-0002-4313-4397; Sassi, Fabrizio/0000-0002-9492-7434 NR 48 TC 0 Z9 0 U1 1 U2 2 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 2016 VL 16 IS 12 BP 7957 EP 7967 DI 10.5194/acp-16-7957-2016 PG 11 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA DQ7VZ UT WOS:000379417300030 ER PT J AU Hubert, D Lambert, JC Verhoelst, T Granville, J Keppens, A Baray, JL Bourassa, AE Cortesi, U Degenstein, DA Froidevaux, L Godin-Beekmann, S Hoppel, KW Johnson, BJ Kyrola, E Leblanc, T Lichtenberg, G Marchand, M McElroy, CT Murtagh, D Nakane, H Portafaix, T Querel, R Russell, JM Salvador, J Smit, HGJ Stebel, K Steinbrecht, W Strawbridge, KB Stubi, R Swart, DPJ Taha, G Tarasick, DW Thompson, AM Urban, J van Gijsel, JAE Van Malderen, R von der Gathen, P Walker, KA Wolfram, E Zawodny, JM AF Hubert, Daan Lambert, Jean-Christopher Verhoelst, Tijl Granville, Jose Keppens, Arno Baray, Jean-Luc Bourassa, Adam E. Cortesi, Ugo Degenstein, Doug A. Froidevaux, Lucien Godin-Beekmann, Sophie Hoppel, Karl W. Johnson, Bryan J. Kyrola, Erkki Leblanc, Thierry Lichtenberg, Guenter Marchand, Marion McElroy, C. Thomas Murtagh, Donal Nakane, Hideaki Portafaix, Thierry Querel, Richard Russell, James M., III Salvador, Jacobo Smit, Herman G. J. Stebel, Kerstin Steinbrecht, Wolfgang Strawbridge, Kevin B. Stubi, Rene Swart, Daan P. J. Taha, Ghassan Tarasick, David W. Thompson, Anne M. Urban, Joachim van Gijsel, Joanna A. E. Van Malderen, Roeland von der Gathen, Peter Walker, Kaley A. Wolfram, Elian Zawodny, Joseph M. TI Ground-based assessment of the bias and long-term stability of 14 limb and occultation ozone profile data records SO ATMOSPHERIC MEASUREMENT TECHNIQUES LA English DT Article ID STRATOSPHERIC OZONE; SAGE-II; VERTICAL-DISTRIBUTION; RETRIEVAL ALGORITHM; POAM-III; DATA SET; SATELLITE MEASUREMENTS; RELATIVE DRIFTS; ERROR ANALYSIS; PAST CHANGES AB The ozone profile records of a large number of limb and occultation satellite instruments are widely used to address several key questions in ozone research. Further progress in some domains depends on a more detailed understanding of these data sets, especially of their long-term stability and their mutual consistency. To this end, we made a systematic assessment of 14 limb and occultation sounders that, together, provide more than three decades of global ozone profile measurements. In particular, we considered the latest operational Level-2 records by SAGE II, SAGE III, HALOE, UARS MLS, Aura MLS, POAM II, POAM III, OSIRIS, SMR, GOMOS, MIPAS, SCIAMACHY, ACE-FTS and MAESTRO. Central to our work is a consistent and robust analysis of the comparisons against the ground-based ozonesonde and stratospheric ozone lidar networks. It allowed us to investigate, from the troposphere up to the stratopause, the following main aspects of satellite data quality: long-term stability, overall bias and short-term variability, together with their dependence on geophysical parameters and profile representation. In addition, it permitted us to quantify the overall consistency between the ozone profilers. Generally, we found that between 20 and 40 km the satellite ozone measurement biases are smaller than +/- 5 %, the short-term variabilities are less than 5-12% and the drifts are at most +/- 5% decade(-1) (or even +/- 3% decade(-1) for a few records). The agreement with ground-based data degrades somewhat towards the stratopause and especially towards the tropopause where natural variability and low ozone abundances impede a more precise analysis. In part of the stratosphere a few records deviate from the preceding general conclusions; we identified biases of 10% and more (POAM II and SCIAMACHY), markedly higher single-profile variability (SMR and SCIAMACHY) and significant long-term drifts (SCIAMACHY, OSIRIS, HALOE and possibly GOMOS and SMR as well). Furthermore, we reflected on the repercussions of our findings for the construction, analysis and interpretation of merged data records. Most notably, the discrepancies between several recent ozone profile trend assessments can be mostly explained by instrumental drift. This clearly demonstrates the need for systematic comprehensive multi-instrument comparison analyses. C1 [Hubert, Daan; Lambert, Jean-Christopher; Verhoelst, Tijl; Granville, Jose; Keppens, Arno] Royal Belgian Inst Space Aeron BIRA IASB, Brussels, Belgium. [Baray, Jean-Luc; Portafaix, Thierry] Univ Reunion, CNRS, Lab Atmosphere & Cyclones, Meteo France,OSU Reunion, St Denis, Reunion. [Baray, Jean-Luc] Univ Clermont Ferrand, CNRS, Observ Phys Globe Clermont Ferrand, Lab Meteorol Phys, Clermont Ferrand, France. [Bourassa, Adam E.; Degenstein, Doug A.] Univ Saskatchewan, Inst Space & Atmospher Studies, Saskatoon, SK, Canada. [Cortesi, Ugo] Ist Fis Appl Nello Carrara Consiglio Nazl Ric, Sesto Fiorentino, Italy. [Froidevaux, Lucien] CALTECH, Jet Prop Lab, Pasadena, CA USA. [Godin-Beekmann, Sophie; Marchand, Marion] Univ Versailles St Quentin Yvelines, CNRS, Lab Atmosphere Milieux Observ Spatiales, Paris, France. [Hoppel, Karl W.] Naval Res Lab, Washington, DC 20375 USA. [Johnson, Bryan J.] NOAA, Global Monitoring Div, Earth Syst Res Lab, Boulder, CO USA. [Kyrola, Erkki] Finnish Meteorol Inst, FIN-00101 Helsinki, Finland. [Leblanc, Thierry] CALTECH, Jet Prop Lab, Wrightwood, CA USA. [Lichtenberg, Guenter] German Aerosp Ctr DLR, Remote Sensing Technol Inst, Oberpfaffenhofen, Germany. [McElroy, C. Thomas] York Univ, Toronto, ON M3J 2R7, Canada. [Murtagh, Donal; Urban, Joachim] Chalmers, Dept Earth & Space Sci, S-41296 Gothenburg, Sweden. [Nakane, Hideaki] Kochi Univ Technol, Kochi, Japan. [Nakane, Hideaki] Natl Inst Environm Studies, Tsukuba, Ibaraki, Japan. [Querel, Richard] Natl Inst Water & Atmospher Res, Lauder, New Zealand. [Russell, James M., III] Hampton Univ, Dept Atmospher & Planetary Sci, Hampton, VA 23668 USA. [Salvador, Jacobo; Wolfram, Elian] CEILAP UNIDEF MINDEF CONICET, UMI IFAECI CNRS 3351, Villa Martelli, Argentina. [Smit, Herman G. J.] Res Ctr Julich, Inst Energy & Climate Res Troposphere IEK 8, Julich, Germany. [Stebel, Kerstin] Norwegian Inst Air Res NILU, Kjeller, Norway. [Steinbrecht, Wolfgang] Deutsch Wetterdienst, Meteorol Observatorium, Hohenpeissenberg, Germany. [Strawbridge, Kevin B.; Tarasick, David W.] Environm & Climate Change Canada, Air Qual Res, Toronto, ON, Canada. [Stubi, Rene] MeteoSwiss, Payerne Aerol Stn, Payerne, Switzerland. [Swart, Daan P. J.] Natl Inst Publ Hlth & Environm RIVM, Bilthoven, Netherlands. [Taha, Ghassan] Univ Space Res Assoc, Greenbelt, MD USA. [Taha, Ghassan; Thompson, Anne M.] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA. [van Gijsel, Joanna A. E.] Royal Netherlands Meteorol Inst KNMI, De Bilt, Netherlands. [Van Malderen, Roeland] Royal Meteorol Inst Belgium, Brussels, Belgium. [von der Gathen, Peter] Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Potsdam, Germany. [Walker, Kaley A.] Univ Toronto, Dept Phys, Toronto, ON, Canada. [Walker, Kaley A.] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada. [Zawodny, Joseph M.] NASA, Langley Res Ctr, Hampton, VA 23665 USA. RP Hubert, D (reprint author), Royal Belgian Inst Space Aeron BIRA IASB, Brussels, Belgium. EM daan.hubert@aeronomie.be RI von der Gathen, Peter/B-8515-2009; van Gijsel, Joanna/F-8087-2010; Smit, Herman/J-2397-2012; Querel, Richard/D-3770-2015; Thompson, Anne /C-3649-2014; OI von der Gathen, Peter/0000-0001-7409-1556; Smit, Herman/0000-0002-2268-4189; Querel, Richard/0000-0001-8792-2486; Thompson, Anne /0000-0002-7829-0920; Hubert, Daan/0000-0002-4365-865X; Tarasick, David/0000-0001-9869-0692 FU ESA; EU under FP6 project GEOmon [FP6-2005-Global-4-036677]; ESA's CCI Ozone project; Belgian Science Policy Office (BELSPO); ProDEx project SECPEA; ProDEx project A3C; ESA/ProDEx projects Ex Val [C90190, CN1-4]; Dutch Ministry of Infrastructure and Environment; National Aeronautics and Space Administration; NASA; NOAA; Canadian Space Agency; Natural Sciences and Engineering Research Council of Canada; German (DLR) space agency; Dutch (NSO) space agency; Belgian contribution via BIRA-IASB; space agency of Sweden; space agency of Canada; space agency of Finland; space agency of France FX Part of this work was funded by ESA projects Multi-TASTE and VALID, by the EU under FP6 project GEOmon (FP6-2005-Global-4-036677), and by ESA's CCI Ozone project. D. Hubert, A. Keppens and T. Verhoelst acknowledge national funding from the Belgian Science Policy Office (BELSPO) and ProDEx projects SECPEA and A3C. K. Stebel acknowledges funding from the ESA/ProDEx projects Ex Val (C90190, CN1-4, 2005-2011). J. A. E. van Gijsel and D. Swart acknowledge support from the Dutch Ministry of Infrastructure and Environment. Work performed at the Jet Propulsion Laboratory was done under contract with the National Aeronautics and Space Administration. We are also grateful to C. De Clercq, D. Pieroux and S. Vandenbussche for their valuable input. The ozonesonde and lidar data used in this publication were obtained as part of WMO's Global Atmosphere Watch (GAW) and two of its main contributors, namely, the Network for the Detection of Atmospheric Composition Change (NDACC) and the Southern Hemisphere ADditional OZonesondes programme (SHADOZ). The authors acknowledge the meticulous and sustained work of the PIs and staff at ozonesonde and lidar stations to acquire and maintain long-term ozone data records of high quality. The data records are publicly available via the NDACC Data Host Facility (http://www.ndacc.org), the SHADOZ archive (http://croc.gsfc.nasa.gov/shadoz) and the World Ozone and Ultraviolet Data Centre (http://www.woudc.org). NDACC and SHADOZ are supported by meteorological services and space agencies from many countries, with archives funded by NASA and NOAA. We acknowledge the work by F. Posny, as PI of the ozonesonde observations at Reunion Island. The authors also thank the satellite science and processing teams and the contributing space agencies. Measurements from the SAGE and HALOE missions are provided and maintained through support from NASA's Earth Science Division. The Atmospheric Chemistry Experiment (ACE), also known as SCISAT, is a Canadian-led mission mainly supported by the Canadian Space Agency and the Natural Sciences and Engineering Research Council of Canada. SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIA-MACHY) is a joint contribution of Germany, The Netherlands and Belgium to ESA's environmental satellite Envisat and is funded by the German (DLR) and Dutch (NSO) space agencies with Belgian contribution via BIRA-IASB. Sweden's Odin satellite carries the atmospheric and astronomical missions OSIRIS and SMR, developed and funded jointly by the space agencies of Sweden, Canada, Finland and France. This work is dedicated to our much appreciated colleague J. Urban, who regrettably passed away. NR 111 TC 10 Z9 10 U1 12 U2 14 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 2016 VL 9 IS 6 BP 2497 EP 2534 DI 10.5194/amt-9-2497-2016 PG 38 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA DQ7OM UT WOS:000379397100004 ER PT J AU Reeder, DB AF Reeder, D. Benjamin TI Field observation of low-to-mid-frequency acoustic propagation characteristics of an estuarine salt wedge SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID COLUMBIA RIVER ESTUARY; AMBIENT NOISE; WATER; TURBULENCE; SHIP AB The estuarine environment often hosts a salt wedge, the stratification of which is a function of the tide's range and speed of advance, river discharge volumetric flow rate, and river mouth morphology. Competing effects of temperature and salinity on sound speed in this stratified environment control the degree of acoustic refraction occurring along an acoustic path. A field experiment was carried out in the Columbia River Estuary to test the hypothesis: the estuarine salt wedge is acoustically observable in terms of low-to-mid-frequency acoustic propagation. Linear frequency-modulated acoustic signals in the 500-2000 Hz band were transmitted during the advance and retreat of the salt wedge during May 27-29, 2013. Results demonstrate that the salt wedge front is the dominant physical mechanism controlling acoustic propagation in this environment: received signal energy is relatively stable before and after the passage of the salt wedge front when the acoustic path consists of a single medium (either entirely fresh water or entirely salt water), and suffers a 10-15 dB loss and increased variability during salt wedge front passage. Physical parameters and acoustic propagation modeling corroborate and inform the acoustic observations. C1 [Reeder, D. Benjamin] Naval Postgrad Sch, Dept Oceanog, 833 Dyer Rd, Monterey, CA 93943 USA. RP Reeder, DB (reprint author), Naval Postgrad Sch, Dept Oceanog, 833 Dyer Rd, Monterey, CA 93943 USA. EM dbreeder@nps.edu FU Office of Naval Research FX The expertise and tireless efforts of the captain and crew of the R/V Oceanus (OSU), NPS Engineer Chris Miller, and UW/APL colleagues Jim Thomson, Chris Bassett, and Seth Zippel were indispensable in the collection of these data and are sincerely appreciated. Thanks to Guy Gelfenbaum (USGS) for the use of the tripod at Station A5. Thanks also to Antonio Baptista, Charles Seaton, and Paul Turner at CMOP for modeled temperature and salinity profiles used in the acoustic modeling. This work was supported by the Office of Naval Research. NR 33 TC 0 Z9 0 U1 3 U2 4 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 EI 1520-8524 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD JAN PY 2016 VL 139 IS 1 BP 21 EP 29 DI 10.1121/1.4939108 PG 9 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA DQ9ZO UT WOS:000379568000005 PM 26827001 ER PT J AU Tailleart, NR Martin, FJ Rayne, RJ Bayles, RA Rubinoff, A Levenberry, L Natishan, PM AF Tailleart, N. R. Martin, F. J. Rayne, R. J. Bayles, R. A. Rubinoff, A. Levenberry, L. Natishan, P. M. TI Communication-Restoring the Pitting Resistance of Sensitized Duplex Stainless Steel Using Interstitial Hardening SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID LOW-TEMPERATURE; CORROSION-RESISTANCE; S-PHASE; PRECIPITATION; BEHAVIOR; ALLOYS AB Cast duplex stainless steel, alloy 2205, a mix of ferrite and austenite, was heat-treated at 845 degrees C which produced additional phases, e.g., sigma and chi. The new phases depleted the surrounding grains of passivity-promoting elements such as Cr, causing alloy sensitization and a corresponding decrease in pitting resistance. A low temperature gas-phase interstitial hardening (IH) surface modification process was used to surface alloy sensitized samples. Anodic polarization curves showed that after IH treatment, the pitting resistance, determined by the pitting potential, of sensitized samples was restored to values of the as-cast material. (C) The Author(s) 2016. Published by ECS. C1 [Tailleart, N. R.; Martin, F. J.; Natishan, P. M.] US Naval Res Lab, Div Chem, Washington, DC 20375 USA. [Rayne, R. J.] US Naval Res Lab, Div Engn & Mat Sci, Washington, DC 20375 USA. [Bayles, R. A.; Rubinoff, A.] Excet Inc, Springfield, VA 22150 USA. [Levenberry, L.] Leidos Inc, Reston, VA 20190 USA. RP Tailleart, NR (reprint author), US Naval Res Lab, Div Chem, Washington, DC 20375 USA. EM nicole.tailleart@nrl.navy.mil FU Office of Naval Research; Naval Research Laboratory FX The authors gratefully acknowledge the Office of Naval Research and the Naval Research Laboratory for financial support of this work. NR 26 TC 0 Z9 0 U1 16 U2 16 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 2016 VL 163 IS 8 BP C423 EP C425 DI 10.1149/2.0391608jes PG 3 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA DR1TO UT WOS:000379688000059 ER PT J AU Sassin, MB Garsany, Y Gould, BD Swider-Lyons, K AF Sassin, M. B. Garsany, Y. Gould, B. D. Swider-Lyons, K. TI Impact of Compressive Stress on MEA Pore Structure and Its Consequence on PEMFC Performance SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID GAS-DIFFUSION LAYERS; RAY COMPUTED-TOMOGRAPHY; MEMBRANE FUEL-CELLS; CONTACT RESISTANCE; BIPOLAR PLATES; CLAMPING PRESSURE; TRANSPORT; MICROSTRUCTURE; PEFC; GDL AB One of the most important factors in the assembly of polymer electrolyte membrane fuel cells (PEMFCs) is to set the appropriate normal compressive stress to the cell to balance the conflicting demands of mitigating gas leaks and decreasing contact resistance without damaging the porous components so that optimal performance is obtained. Herein we systematically evaluate the influence of compressive stress (0 to 1.4 MPa) on membrane electrode assemblies (MEAs) composed of spray-coated catalyst layers (CLs) and gas diffusion media (GDM) containing both a gas diffusion layer (GDL) and a microporous layer (MPL) by changing the gasket thickness. The CL structure is unaltered at the levels of compressive stress evaluated in this study, as confirmed by postmortem scanning electron microscopy and electrochemical evaluation. However, the pore structure of the MPL of the GDM is significantly altered at compressive stresses >= 0.96 MPa, resulting in a loss of up to 95% of the cumulative pore volume in the MPL. This collapse of the MPL structure results in up to a 19% decrease in current density in the mass transport region of the polarization curve. Oxygen gain voltage analysis confirms that the mass transport limitation occurs in the GDM. We conclude that compressive stress must be optimized around the MPL and that cross-sectional SEM is an effective tool for observing changes in the overall porosity in MEA components. (C) 2016 The Electrochemical Society. All rights reserved. C1 [Sassin, M. B.; Gould, B. D.; Swider-Lyons, K.] US Naval Res Lab, Washington, DC 20375 USA. [Garsany, Y.] EXCET INC, Springfield, VA 22151 USA. RP Sassin, MB (reprint author), US Naval Res Lab, Washington, DC 20375 USA. EM megan.sassin@nrl.navy.mil FU Office of Naval Research FX The authors are grateful to the Office of Naval Research for financial support of this project. The authors thank Keith Bethune for helpful discussions on fuel cell assembly protocols. NR 42 TC 1 Z9 1 U1 8 U2 12 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 2016 VL 163 IS 8 BP F808 EP F815 DI 10.1149/2.0291608jes PG 8 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA DR1TO UT WOS:000379688000094 ER PT J AU He, CL Tang, YX Mitchell, LA Parrish, DA Shreeve, JM AF He, Chunlin Tang, Yongxing Mitchell, Lauren A. Parrish, Damon A. Shreeve, Jean'ne M. TI N-Oxides light up energetic performances: synthesis and characterization of dinitraminobisfuroxans and their salts SO JOURNAL OF MATERIALS CHEMISTRY A LA English DT Article ID IONIC DERIVATIVES; BUILDING-BLOCK; GENERATION; 1,2,4-OXADIAZOLE; HETEROCYCLES; SENSITIVITY; DENSITY; DESIGN; ACID; AZO AB 4,4'-Diamino-[3,3'-bi(1,2,5-oxadiazole)]-5,5'-dioxide and 4,4'-diamino-[3,3'-bi(1,2,5-oxadiazole)]-2,2'-dioxide were nitrated in 100% HNO3 at -10 degrees C to give 4,4'-dinitramino-[3,3'-bi(1,2,5-oxadiazole)]-5,5'-dioxide (3) and 4,4'-diamino-[3,3'-bi(1,2,5-oxadiazole)]-2,2'dioxide (4). Nine nitrogen-rich salts were prepared and were characterized by infrared and multinuclear NMR spectroscopy, elemental analysis, differential scanning calorimetry (DSC) and X-ray single crystal diffraction in some cases. Their detonation properties were evaluated by EXPLO5 code using the measured density and calculated heat of formation. The sensitivities were determined by standard BAM methods. Several of the new molecules exhibit detonation and other properties which compete with or exceed those of HMX. C1 [He, Chunlin; Tang, Yongxing; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA. [Mitchell, Lauren A.] Univ Minnesota, Dept Chem, 207 Pleasant St SE, Minneapolis, MN 55455 USA. [Parrish, Damon A.] Naval Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA. RP Shreeve, JM (reprint author), Univ Idaho, Dept Chem, Moscow, ID 83844 USA. EM jshreeve@uidaho.edu OI Mitchell, Lauren/0000-0002-1311-0108 FU Office of Naval Research [N00014-16-1-2089, N00014-15-WX-0-0149]; Defense Threat Reduction Agency [HDTRA 1-15-1-0028] FX This work was supported by the Office of Naval Research (N00014-16-1-2089 and N00014-15-WX-0-0149) and the Defense Threat Reduction Agency (HDTRA 1-15-1-0028). We are indebted to Dr Orion Berryman (NSF-CHE1337908 and CoBRE NIGMS P20GM103546) and Dr Brendan Twamley for crystal structures. NR 54 TC 2 Z9 2 U1 3 U2 6 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 2016 VL 4 IS 23 BP 8969 EP 8973 DI 10.1039/c6ta03619h PG 5 WC Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Energy & Fuels; Materials Science GA DQ1FP UT WOS:000378947200003 ER EF