FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Gutteridge, CE
Curtis, SM
Major, JW
Nin, DA
Bhattacharjee, AK
Nichols, DA
Gerena, L
AF Gutteridge, Clare E.
Curtis, Sean M.
Major, Joshua W.
Nin, Daniel A.
Bhattacharjee, Apurba K.
Nichols, Daniel A.
Gerena, Lucia
TI Synthesis of Dichlorophenyl-, Cyanophenyl- and Quinolinyl-Substituted
alpha-Ethoxyacetic Acids and Derivatives, via alpha-Hydroxyarylacetic
Acids
SO LETTERS IN ORGANIC CHEMISTRY
LA English
DT Article
DE 2-Ethoxyacetamide; 2-ethoxyphenylacetamide; ethylation; phenylacetic
acid
AB A synthetic approach to novel series of alpha-ethoxy-alpha-phenylacetamides and alpha-ethoxy-alpha-quinolinylacetamides was developed. Aryl aldehydes were converted to cyanohydrins, which were then hydrolyzed or alcoholyzed. Following ethylation of the alpha-hydroxy group, peptide-coupling protocols were used to produce the target amides. These amides, together with the alpha-ethoxy intermediates, have significant potential for a broad range of application including as antimalarial, fungicidal, bactericidal, anticoagulant, hypolipidemic and sleep-promoting agents.
C1 [Gutteridge, Clare E.; Curtis, Sean M.; Major, Joshua W.; Nin, Daniel A.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
[Bhattacharjee, Apurba K.; Nichols, Daniel A.; Gerena, Lucia] Walter Reed Army Inst Res, Div Expt Therapeut, Silver Spring, MD 20910 USA.
RP Gutteridge, CE (reprint author), US Naval Acad, 572M Holloway Rd,Mailstop 9B, Annapolis, MD 21402 USA.
EM gutterid@usna.edu
FU Military Infectious Diseases Research Program; Research Corporation;
Office of Naval Research; United States Naval Academy
FX The authors are grateful for support of this work by the Military
Infectious Diseases Research Program, the Research Corporation (for a
Cottrell College Science Award to C.G.) the Office of Naval Research and
the United States Naval Academy (including Naval Academy Research
Committee support). Material has been reviewed by the Walter Reed Army
Institute of Research. There is no objection to its presentation and/or
publication. 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 the Army or the Department of
Defense.
NR 21
TC 1
Z9 1
U1 0
U2 0
PU BENTHAM SCIENCE PUBL LTD
PI SHARJAH
PA EXECUTIVE STE Y-2, PO BOX 7917, SAIF ZONE, 1200 BR SHARJAH, U ARAB
EMIRATES
SN 1570-1786
EI 1875-6255
J9 LETT ORG CHEM
JI Lett. Org. Chem.
PY 2015
VL 12
IS 6
BP 407
EP 412
PG 6
WC Chemistry, Organic
SC Chemistry
GA CM4YF
UT WOS:000357691900006
ER
PT S
AU Cochenour, BM
Laux, AE
AF Cochenour, Brandon M.
Laux, Alan E.
BE Hou, WW
Arnone, RA
TI Experimental validation of a Monte Carlo model for determining the
temporal response of the underwater optical communications channel
SO OCEAN SENSING AND MONITORING VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Ocean Sensing and Monitoring VII
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE Underwater; laser communications; scattering; dispersion; Monte Carlo
ID SCATTERING ALBEDO; MODULATED LIGHT; PROPAGATION; WATER
AB Recent interest in high speed laser communications underwater has restimulated theoretical studies in laser propagation in turbid media. In particular, the characterization of temporal dispersion is of paramount importance in order to predict the bandwidth and capacity of underwater optical channels. While the temporal aspects of underwater laser propagation have received attention from the modeling community in the past, few if any of these models have been validated with experimental data. However recent advances in hardware technology now enable experimental characterization at high speeds (GHz). Such measurements have been made by the authors.1 In this work, we develop a Monte Carlo model, and present initial results validated against the aforementioned experimental data.
C1 [Cochenour, Brandon M.; Laux, Alan E.] Naval Air Warfare Ctr, Patuxent River, MD 20670 USA.
RP Cochenour, BM (reprint author), Naval Air Warfare Ctr, 22347 Cedar Point Rd, Patuxent River, MD 20670 USA.
EM brandon.cochenour@navy.mil
NR 12
TC 0
Z9 0
U1 2
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-575-9
J9 PROC SPIE
PY 2015
VL 9459
AR 94590A
DI 10.1117/12.2177840
PG 9
WC Remote Sensing; Optics
SC Remote Sensing; Optics
GA BD0SJ
UT WOS:000357647400002
ER
PT S
AU Illig, DW
Laux, A
Lee, RW
Jemison, WD
Mullen, LJ
AF Illig, David W.
Laux, Alan
Lee, Robert W.
Jemison, William D.
Mullen, Linda J.
BE Hou, WW
Arnone, RA
TI FMCW optical ranging technique in turbid waters
SO OCEAN SENSING AND MONITORING VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Ocean Sensing and Monitoring VII
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE LIDAR; FMCW; underwater; optical; laser; modulation; ranging; scattering
ID UNDERWATER TARGET; LIDAR
AB The performance of a frequency-modulated continuous-wave (FMCW) hybrid lidar-radar system will be presented in the context of an underwater optical ranging application. In adapting this technique from the radar community, a laser is intensity-modulated with a linear frequency ramp. A custom wideband laser source modulated by a new wideband digital synthesizer board is used to transmit an 800 MHz wide chirp into the underwater channel. The transmitted signal is mixed with a reference copy to obtain a "beat" signal representing the distance to the desired object. The expected form of the return signal is derived for turbid waters, a highly scattering environment, indicating that FMCW can detect both the desired object and the volumetric center of the backscatter "clutter" signal. This result is verified using both laboratory experiments and a realistic simulation model of the underwater optical channel. Ranging performance is explored as a function of both object position and water turbidity. Experimental and simulated results are in good agreement and performance out to ten attenuation lengths is reported, equivalent to 100 meters in open ocean or 5 meters in a turbid harbor condition.
C1 [Illig, David W.; Jemison, William D.] Clarkson Univ, Dept Elect & Comp Engn, Potsdam, NY 13699 USA.
[Laux, Alan; Lee, Robert W.; Mullen, Linda J.] NAVAIR, Naval Air Syst Command, Electroopt & Special Mission Sensors Div, 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 20
TC 2
Z9 2
U1 1
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-575-9
J9 PROC SPIE
PY 2015
VL 9459
AR 94590B
DI 10.1117/12.2177051
PG 10
WC Remote Sensing; Optics
SC Remote Sensing; Optics
GA BD0SJ
UT WOS:000357647400003
ER
PT S
AU Liu, GG
Han, M
Hou, WL
Matt, S
Goode, W
AF Liu, Guigen
Han, Ming
Hou, Weilin
Matt, Silvia
Goode, Wesley
BE Hou, WW
Arnone, RA
TI A miniature fiber-optic sensor for high-resolution and high-speed
temperature sensing in ocean environment
SO OCEAN SENSING AND MONITORING VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Ocean Sensing and Monitoring VII
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE Fiber-optic sensors; Fabry-Perot interferometer; thermometer; high-speed
detection
ID TURBULENCE
AB Temperature measurement is one of the key quantifies in ocean research. Temperature variations on small and large scales are key to air-sea interactions and climate change, and also regulate circulation patterns, and heat exchange. The influence from rapid temperature changes within microstructures are can have strong impacts to optical and acoustical sensor performance. In this paper, we present an optical fiber sensor for the high-resolution and high-speed temperature profiling. The developed sensor consists of a thin piece of silicon wafer which forms a Fabry-Perot interferometer (FPI) on the end of fiber. Due to the unique properties of silicon, such as large thermal diffusivity, notable thermo-optic effects and thermal expansion coefficients of silicon, the proposed sensor exhibits excellent sensitivity and fast response to temperature variation. The small mass of the tiny probe also contributes to a fast response due to the large surface-to-volume ratio. The high reflective index at infrared wavelength range and surface flatness of silicon endow the FPI a spectrum with high visibilities, leading to a superior temperature resolution along with a new data processing method developed by us. Experimental results indicate that the fiber-optic temperature sensor can achieve a temperature resolution better than 0.001 degrees C with a sampling frequency as high as 2 kHz. In addition, the miniature footprint of the senor provide high spatial resolutions. Using this high performance thermometer, excellent characterization of the real-time temperature profile within the flow of water turbulence has been realized.
C1 [Liu, Guigen; Han, Ming] Univ Nebraska, Dept Elect Engn, Lincoln, NE 68588 USA.
[Hou, Weilin; Matt, Silvia; Goode, Wesley] Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Han, M (reprint author), Univ Nebraska, Dept Elect Engn, Lincoln, NE 68588 USA.
EM mhan3@unl.edu
NR 11
TC 0
Z9 0
U1 2
U2 9
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-575-9
J9 PROC SPIE
PY 2015
VL 9459
AR 94590I
DI 10.1117/12.2180168
PG 6
WC Remote Sensing; Optics
SC Remote Sensing; Optics
GA BD0SJ
UT WOS:000357647400010
ER
PT S
AU Matt, S
Hou, WL
Goode, W
Liu, GG
Han, M
Kanaev, A
Restaino, S
AF Matt, Silvia
Hou, Weilin
Goode, Wesley
Liu, Guigen
Han, Ming
Kanaev, Andrey
Restaino, Sergio
BE Hou, WW
Arnone, RA
TI A controlled laboratory environment to study EO signal degradation due
to underwater turbulence
SO OCEAN SENSING AND MONITORING VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Ocean Sensing and Monitoring VII
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE Optical turbulence; turbulence measurements; Rayleigh-Benard tank;
numerical simulation; temperature measurements; computational fluid
dynamics; oceanic optics
AB Temperature microstructure in the ocean can lead to localized changes in the index of refraction and can distort underwater electro-optical (EO) signal transmission. A similar phenomenon is well-known from atmospheric optics and generally referred to as "optical turbulence". Though turbulent fluctuations in the ocean distort EO signal transmission and can impact various underwater applications, from diver visibility to active and passive remote sensing, there have been few studies investigating the subject. To provide a test bed for the study of impacts from turbulent flows on underwater EO signal transmission, and to examine and mitigate turbulence effects, we set up a laboratory turbulence environment allowing the variation of turbulence intensity. Convective turbulence is generated in a large Rayleigh-Benard tank and the turbulent flow is quantified using high-resolution Acoustic Doppler Velocimeter profilers and fast thermistor probes. The turbulence measurements are complemented by computational fluid dynamics simulations of convective turbulence emulating the tank environment. These numerical simulations supplement the sparse laboratory measurements. The numerical data compared well to the laboratory data and both conformed to the Kolmogorov spectrum of turbulence and the Batchelor spectrum of temperature fluctuations. The controlled turbulence environment can be used to assess optical image degradation in the tank in relation to turbulence intensity, as well as to apply adaptive optics techniques. This innovative approach that combines optical techniques, turbulence measurements and numerical simulations can help understand how to mitigate the effects of turbulence impacts on underwater optical signal transmission, as well as advance optical techniques to probe oceanic processes.
C1 [Matt, Silvia; Hou, Weilin; Goode, Wesley] Naval Res Lab, Stennis Space Ctr, MS 39426 USA.
[Liu, Guigen; Han, Ming] Univ Nebraska, Dept Elect Engn, Lincoln, NE 68588 USA.
[Kanaev, Andrey; Restaino, Sergio] Naval Res Lab, Washington, DC 20375 USA.
RP Matt, S (reprint author), Naval Res Lab, Stennis Space Ctr, MS 39426 USA.
EM silvia.matt@nrlssc.navy.mil
NR 18
TC 0
Z9 0
U1 2
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-575-9
J9 PROC SPIE
PY 2015
VL 9459
AR 94590H
DI 10.1117/12.2177028
PG 10
WC Remote Sensing; Optics
SC Remote Sensing; Optics
GA BD0SJ
UT WOS:000357647400009
ER
PT S
AU Ouyang, B
Hou, WL
Caimi, FM
Dalgleish, FR
Vuorenkoski, AK
Gong, S
AF Ouyang, Bing
Hou, Weilin
Caimi, Frank M.
Dalgleish, Fraser R.
Vuorenkoski, Anni K.
Gong, Sue
BE Hou, WW
Arnone, RA
TI Distributed Compressive Sensing vs. Dynamic Compressive Sensing:
Improving the Compressive Line Sensing Imaging System through Their
Integration
SO OCEAN SENSING AND MONITORING VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Ocean Sensing and Monitoring VII
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
AB In recent years, a compressive sensing based underwater imaging system has been under investigation: the Compressive Line Sensing (CLS) imaging system. In the CLS system, each line segment is sensed independently; with regard to signal reconstruction, the correlation among the adjacent lines is exploited via the joint sparsity in the distributed compressive sensing model. Interestingly, the dynamic compressive sensing signal model is also capable of exploiting the correlated nature of the adjacent lines through a Bayesian framework. This paper proposes a new CLS reconstruction technique through the integration of these different models, and includes an evaluation of the proposed technique using the experiment dataset obtained from an underwater imaging test setup.
C1 [Ouyang, Bing; Caimi, Frank M.; Dalgleish, Fraser R.; Vuorenkoski, Anni K.] Florida Atlantic Univ, Harbor Branch Oceanog Inst, Ft Pierce, FL 34946 USA.
[Hou, Weilin] Naval Res Lab, Stennis Space Ctr, MS 39556 USA.
[Gong, Sue] Texas Christian Univ, Dept Engn, Ft Worth, TX 76129 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 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 978-1-62841-575-9
J9 PROC SPIE
PY 2015
VL 9459
AR 94590D
DI 10.1117/12.2180130
PG 12
WC Remote Sensing; Optics
SC Remote Sensing; Optics
GA BD0SJ
UT WOS:000357647400005
ER
PT S
AU Shulman, I
Penta, B
Richman, J
Jacobs, G
Anderson, S
Sakalaukus, P
AF Shulman, Igor
Penta, Bradley
Richman, James
Jacobs, Gregg
Anderson, Stephanie
Sakalaukus, Peter
BE Hou, WW
Arnone, RA
TI ARE THE SATELLITE-OBSERVED NARROW, STREAKY CHLOROPHYLL FILAMENTS LOCALLY
INTENSIFIED BY THE SUBMESOSCALE PROCESSES?
SO OCEAN SENSING AND MONITORING VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Ocean Sensing and Monitoring VII
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE Coastal Processes; Submesoscale Processes; Phytoplankton Filaments;
Interdisciplinary Oceanography
ID MONTEREY BAY; WINDS
AB Based on observations and modeling studies we have evaluated the impact of submesoscale processes on the development and intensification of offshore narrow (5-10km wide) phytoplankton filaments during summer time in the Monterey Bay, CA. We have demonstrated that, submesoscale processes (surface frontogenesis and nonlinear Ekman transport) lead to the development of very productive phytoplankton patches along the edges between the cold jet and warm anticyclonic eddy. Our results illustrate that during persistent upwelling favorable winds, submesoscale processes can modulate the development and intensification of offshore narrow (5-10km wide) phytoplankton filaments. These processes can incubate the phytoplankton population offshore (as for example, bioluminescent dinoflagellates during August 2003). These offshore phytoplankton filaments can migrate onshore during relaxed winds following the upwelling, and be an additional source of phytoplankton bloom development in and around Monterey Bay. Therefore, the discussed offshore phytoplankton filaments may be a factor in the Bay ecosystem health, as for example, in the development of such events as harmful algae blooms (HABs). All these emphasize the importance of further observational and modeling studies of these submesoscale processes which impact the development and intensification of offshore phytoplankton filaments.
C1 [Shulman, Igor; Penta, Bradley; Richman, James; Jacobs, Gregg; Anderson, Stephanie; Sakalaukus, Peter] Naval Res Lab, Div Oceanog, Stennis Space Ctr, MS 39529 USA.
RP Shulman, I (reprint author), Naval Res Lab, Div Oceanog, Stennis Space Ctr, MS 39529 USA.
NR 19
TC 0
Z9 0
U1 0
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-575-9
J9 PROC SPIE
PY 2015
VL 9459
AR 94590K
DI 10.1117/12.2177569
PG 14
WC Remote Sensing; Optics
SC Remote Sensing; Optics
GA BD0SJ
UT WOS:000357647400012
ER
PT S
AU Smedstad, LF
Barron, CN
Bourg, RN
Brooking, MW
Bryant, DA
Carr, RJ
Heaney, KD
Holmberg, EA
Mask, AC
Mensi, BL
AF Smedstad, Lucy F.
Barron, Charlie N.
Bourg, Rachel N.
Brooking, Michael W.
Bryant, Danielle A.
Carr, Robert J.
Heaney, Kevin D.
Holmberg, Edward A.
Mask, Andrea C.
Mensi, Bryan L.
BE Hou, WW
Arnone, RA
TI An expansion of Glider Observation Strategies to systematically transmit
and analyze preferred waypoints of underwater gliders
SO OCEAN SENSING AND MONITORING VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Ocean Sensing and Monitoring VII
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE operational ocean modeling; gliders; autonomous platforms
AB The Glider Observation STrategies (GOST) system provides real-time assistance to ocean glider pilots by suggesting preferred ocean glider waypoints based on ocean forecasts and their uncertainties. Restrictions on waterspace, preferred operational areas, and other glider trajectories are also taken into account. Using existing operational regional Navy Coastal Ocean Model (RNCOM) output, demonstrations of glider waypoint calculation are ongoing in Navy operational areas. After the ocean forecast models and GOST components run at the Navy DoD Supercomputing Resource Center (Navy DSRC), GOST-suggested glider paths are transferred to the Glider Operations Center (GOC). The glider pilots at the GOC import this information into their Unmanned Systems Interface (USI), developed at the University of Washington, Applied Physics Laboratory (APL-UW) to evaluate the suggested glider paths, make adjustments, and update waypoints for the gliders. The waypoints being sent are visualized and analyzed using graphic capabilities to convey guidance uncertainty developed under a grant to the University of New Orleans (UNO) and added under the Environmental Measurements Path Planner (EMPath) system within GOST. USI forwards automatic messages from the gliders with recent glider location, speed, and depth to GOST for the next cycle. Over the course of these demonstrations, capabilities were added or modified including use of initial glider bearing, preferred path, refinement of glider turn frequency, correction of glider speed, and introduction of glider rendezvous locations. Automation has been added with help from the modeling group at the Naval Oceanographic Office (NAVOCEANO). GOST supports NAVOCEANO's ongoing efforts to direct and recover gliders, to safely navigate in changing ocean conditions, and to provide feedback to improve ocean model prediction.
C1 [Smedstad, Lucy F.; Barron, Charlie N.] Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
[Bourg, Rachel N.; Brooking, Michael W.; Bryant, Danielle A.; Mask, Andrea C.; Mensi, Bryan L.] Naval Oceanog Off NAVOCEANO, Stennis Space Ctr, MS 39529 USA.
[Carr, Robert J.] Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA.
[Heaney, Kevin D.] Ocean Acoust Serv & Instrumentat Syst Inc OASIS, Lexington, MA USA.
[Holmberg, Edward A.] Univ New Orleans, New Orleans, LA 70148 USA.
RP Smedstad, LF (reprint author), Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
RI Barron, Charlie/C-1451-2008
NR 9
TC 0
Z9 0
U1 1
U2 6
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-575-9
J9 PROC SPIE
PY 2015
VL 9459
AR UNSP 94590J
DI 10.1117/12.2176560
PG 12
WC Remote Sensing; Optics
SC Remote Sensing; Optics
GA BD0SJ
UT WOS:000357647400011
ER
PT J
AU Rockafellar, RT
Royset, JO
AF Rockafellar, R. Tyrrell
Royset, Johannes O.
TI MEASURES OF RESIDUAL RISK WITH CONNECTIONS TO REGRESSION, RISK TRACKING,
SURROGATE MODELS, AND AMBIGUITY
SO SIAM JOURNAL ON OPTIMIZATION
LA English
DT Article
DE risk measures; residual risk; generalized regression; surrogate
estimation; optimization under stochastic ambiguity
ID CONDITIONAL EXPECTED SHORTFALL; VALUE-AT-RISK; UNCERTAINTY
QUANTIFICATION; PORTFOLIO OPTIMIZATION; PROGRAMS
AB Measures of residual risk are developed as an extension of measures of risk. They view a random variable of interest in concert with an auxiliary random vector that helps to manage, predict, and mitigate the risk in the original variable. Residual risk can be exemplified as a quantification of the improved situation faced by a hedging investor compared to that of a single-asset investor, but the notion reaches further, with deep connections emerging with forecasting and generalized regression. We establish the fundamental properties in this framework and show that measures of residual risk along with generalized regression can play central roles in the development of risk-tuned approximations of random variables, in tracking of statistics, and in estimation of the risk of conditional random variables. The paper ends with dual expressions for measures of residual risk which lead to further insights and a new class of distributionally robust optimization models.
C1 [Rockafellar, R. Tyrrell] Univ Washington, Dept Math, Seattle, WA 98195 USA.
[Royset, Johannes O.] Naval Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.
RP Rockafellar, RT (reprint author), Univ Washington, Dept Math, Seattle, WA 98195 USA.
EM rtr@uw.edu; joroyset@nps.edu
FU U.S. Air Force Office of Scientific Research [FA9550-11-1-0206,
F1ATAO1194GOO1, F4FGA04094G003]; DARPA [HR0011412251]
FX This material is based upon work supported in part by the U.S. Air Force
Office of Scientific Research under FA9550-11-1-0206, F1ATAO1194GOO1,
and F4FGA04094G003 as well as DARPA under HR0011412251. The U.S.
Government retains a nonexclusive, royalty-free license to publish or
reproduce the published form of this contribution, or allow others to do
so, for U.S. Government purposes. Copyright is owned by SIAM to the
extent not limited by these rights.
NR 30
TC 0
Z9 0
U1 4
U2 5
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1052-6234
EI 1095-7189
J9 SIAM J OPTIMIZ
JI SIAM J. Optim.
PY 2015
VL 25
IS 2
BP 1179
EP 1208
DI 10.1137/151003271
PG 30
WC Mathematics, Applied
SC Mathematics
GA CM0YR
UT WOS:000357406900018
ER
PT S
AU Costa, R
Wettergren, TA
AF Costa, Russell
Wettergren, Thomas A.
BE Kadar, I
TI Computationally efficient angles-only tracking with particle flow
filters
SO SIGNAL PROCESSING, SENSOR/INFORMATION FUSION, AND TARGET RECOGNITION
XXIV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Signal Processing, Sensor/Information Fusion, and Target
Recognition XXIV
CY APR 20-22, 2015
CL Baltimore, MD
SP SPIE
AB Particle filters represent the current state of the art in nonlinear, non-Gaussian filtering. They are easy to implement and have been applied in numerous domains. That being said, particle filters can be impractical for problems with state dimensions greater than four, if some other problem specific efficiencies can't be identified. This "curse of dimensionality" makes particle filters a computationally burdensome approach, and the associated re-sampling makes parallel processing difficult. In the past several years an alternative to particle filters dubbed particle flows has emerged as a (potentially) much more efficient method to solving non-linear, non-Gaussian problems. Particle flow filtering (unlike particle filtering) is a deterministic approach, however, its implementation entails solving an under-determined system of partial differential equations which has infinitely many potential solutions. In this work we apply the filters to angles-only target motion analysis problems in order to quantify the (if any) computational gains over standard particle filtering approaches. In particular we focus on the simplest form of particle flow filter, known as the exact particle flow filter. This form assumes a Gaussian prior and likelihood function of the unknown target states and is then linearized as is standard practice for extended Kalman filters. We implement both particle filters and particle flows and perform numerous numerical experiments for comparison.
C1 [Costa, Russell; Wettergren, Thomas A.] Naval Undersea Warfare Ctr, Div Newport, Newport, RI 02841 USA.
RP Costa, R (reprint author), Naval Undersea Warfare Ctr, Div Newport, 1176 Howell St, Newport, RI 02841 USA.
EM Russell.costa@navy.mil; t.a.wettergren@ieee.org
OI Wettergren, Thomas/0000-0002-6623-8412
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 978-1-62841-590-2
J9 PROC SPIE
PY 2015
VL 9474
AR 947404
DI 10.1117/12.2177143
PG 12
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD0AD
UT WOS:000357014700012
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
Kruse, FA
TI Calculation of Electronic-Excited-State Absorption Spectra of Water
Clusters Using Time-Dependent Density Functional Theory
SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND
ULTRASPECTRAL IMAGERY XXI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Algorithms and Technologies for Multispectral,
Hyperspectral, and Ultraspectral Imagery XXI
CY APR 21-23, 2015
CL Baltimore, MD
SP SPIE
DE excited states; UV-visible spectra
ID SIMPLE POTENTIAL FUNCTIONS; GAUSSIAN-BASIS SETS; LIQUID WATER; GLOBAL
MINIMA; AB-INITIO; (H2O)(N); N-LESS-THAN-OR-EQUAL-TO-21; REPRODUCTION
AB Calculations are presented of electronic-excited-state absorption spectra for molecular clusters of H2O using time-dependent density functional theory (TD-DFT). Calculation of excited state resonance structure using TD-DFT can provide interpretation of absorption spectra with respect to molecular structure for excitation by electromagnetic waves at frequencies within the UV-visible range. The absorption spectrum corresponding to electronic excitation states of a molecular cluster consisting of a relatively small number of water molecules should be associated with response features that are intermediate between that of isolated molecules and that of a bulk lattice. 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 electronic excitation states presented here.
C1 [Huang, L.; Lambrakos, S. G.] Naval Res Lab, Washington, DC 20375 USA.
[Shabaev, A.] George Mason Univ, Fairfax, VA 22030 USA.
[Massa, L.] CUNY Hunter Coll, New York, NY 10021 USA.
RP Huang, L (reprint author), Naval Res Lab, Washington, DC 20375 USA.
NR 22
TC 0
Z9 0
U1 3
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 978-1-62841-588-9
J9 PROC SPIE
PY 2015
VL 9472
AR 94720B
DI 10.1117/12.2176435
PG 9
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD0DU
UT WOS:000357086800010
ER
PT S
AU Kruse, FA
McDowell, M
AF Kruse, Fred A.
McDowell, Meryl
BE VelezReyes, M
Kruse, FA
TI Analysis of multispectral and hyperspectral longwave infrared (LWIR)
data for geologic mapping
SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND
ULTRASPECTRAL IMAGERY XXI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Algorithms and Technologies for Multispectral,
Hyperspectral, and Ultraspectral Imagery XXI
CY APR 21-23, 2015
CL Baltimore, MD
SP SPIE
DE MODIS/ASTER Airborne Simulator (MASTER); Hyperspectral Thermal Emission
Spectrometer (HyTES); Multispectral Imaging (MSI); Imaging Spectrometry;
Hyperspectral Imaging (HSI); Longwave Infrared (LWIR); Spectral Geology;
Mountain Pass California remote sensing
ID SPACEBORNE THERMAL EMISSION; REFLECTION RADIOMETER ASTER; AIRBORNE;
CALIFORNIA; SCANNER; NEVADA; IMAGES; TEMPERATURE; MOUNTAINS; SYSTEMS
AB Multispectral MODIS/ASTER Airborne Simulator (MASTER) data and Hyperspectral Thermal Emission Spectrometer (HyTES) data covering the 8 - 12 mu m spectral range (longwave infrared or LWIR) were analyzed for an area near Mountain Pass, California. Decorrelation stretched images were initially used to highlight spectral differences between geologic materials. Both datasets were atmospherically corrected using the ISAC method, and the Normalized Emissivity approach was used to separate temperature and emissivity. The MASTER data had 10 LWIR spectral bands and approximately 35-meter spatial resolution and covered a larger area than the HyTES data, which were collected with 256 narrow (approximately 17nm-wide) spectral bands at approximately 2.3-meter spatial resolution. Spectra for key spatially-coherent, spectrally-determined geologic units for overlap areas were overlain and visually compared to determine similarities and differences. Endmember spectra were extracted from both datasets using n-dimensional scatterplotting and compared to emissivity spectral libraries for identification. Endmember distributions and abundances were then mapped using Mixture-Tuned Matched Filtering (MTMF), a partial unmixing approach. Multispectral results demonstrate separation of silica-rich vs non-silicate materials, with distinct mapping of carbonate areas and general correspondence to the regional geology. Hyperspectral results illustrate refined mapping of silicates with distinction between similar units based on the position, character, and shape of high resolution emission minima near 9 mu m. Calcite and dolomite were separated, identified, and mapped using HyTES based on a shift of the main carbonate emissivity minimum from approximately 11.3 to 11.2 mu m respectively. Both datasets demonstrate the utility of LWIR spectral remote sensing for geologic mapping.
C1 [Kruse, Fred A.] Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
[Kruse, Fred A.] Naval Postgrad Sch, Ctr Remote Sensing, Monterey, CA 93943 USA.
[McDowell, Meryl] Scitor Corp, Reston, VA 20190 USA.
RP Kruse, FA (reprint author), Naval Postgrad Sch, Dept Phys, 833 Dyer Ave, Monterey, CA 93943 USA.
NR 40
TC 1
Z9 1
U1 1
U2 11
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-588-9
J9 PROC SPIE
PY 2015
VL 9472
AR 94721E
DI 10.1117/12.2176657
PG 10
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD0DU
UT WOS:000357086800043
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 VelezReyes, M
Kruse, FA
TI Spectral Analysis of Water Samples Using Modulated Resonance For
Monitoring of Public Water Resources
SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND
ULTRASPECTRAL IMAGERY XXI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Algorithms and Technologies for Multispectral,
Hyperspectral, and Ultraspectral Imagery XXI
CY APR 21-23, 2015
CL Baltimore, MD
SP SPIE
DE water monitoring; spectral analysis; contaminants
AB Hyperspectral analysis of water samples taken from public water resources in the New York City metro area has demonstrated the potential application of this type of analysis for water monitoring, treatment and evaluation prior to filtration. Hyperspectral monitoring of contaminants 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, which are associated with specific water resources. To achieve this, it is necessary to establish correlation between hyperspectral signatures and types of contaminants to be found within specific water resources. Correlation between absorption spectra and changes in chemical and physical characteristics of contaminants requires sufficient sensitivity. The present study examines the sensitivity of modulated resonance features with respect to characteristics of water contaminants for hyperspectral analysis of water samples.
C1 [Lambrakos, S. G.] Naval Res Lab, Ctr Computat Mat, Washington, DC 20375 USA.
[Yapijakis, C.] Naval Res Lab, Signature Technol Off, Washington, DC 20375 USA.
[Aiken, D.; Ramsey, S.; Peak, J.] Cooper Union Adv Sci & Art, Albert Nerkin Sch Engn, New York, NY USA.
[Shabaev, A.] George Mason Univ, Fairfax, VA 22030 USA.
RP Lambrakos, SG (reprint author), Naval Res Lab, Ctr Computat Mat, Code 6390, Washington, DC 20375 USA.
NR 23
TC 1
Z9 1
U1 2
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-588-9
J9 PROC SPIE
PY 2015
VL 9472
AR 947216
DI 10.1117/12.2177969
PG 10
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD0DU
UT WOS:000357086800036
ER
PT S
AU Chen, YH
Helle, MH
Ting, A
Gordon, DF
Polyanskiy, MN
Pogorelsky, I
Babzien, M
Najmudin, Z
AF Chen, Y. -H.
Helle, M. H.
Ting, A.
Gordon, D. F.
Polyanskiy, M. N.
Pogorelsky, I.
Babzien, M.
Najmudin, Z.
BE Ledingham, KWD
Esarey, E
Spohr, K
Schroeder, CB
McKenna, P
Gruner, FJ
Bolton, PR
TI Observation of monoenergetic protons from a near-critical gas target
tailored by a hydrodynamic shock
SO LASER ACCELERATION OF ELECTRONS, PROTONS, AND IONS III; AND MEDICAL
APPLICATIONS OF LASER-GENERATED BEAMS OF PARTICLES III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Laser Acceleration of Electrons, Protons, and Ions III and
Medical Applications of Laser-Generated Beams of Particles III
CY APR 13-15, 2015
CL Prague, CZECH REPUBLIC
SP SPIE
DE laser acceleration of protons; ion acceleration; shock wave
acceleration; laser hole boring; CO2 lasers; near-critical plasmas
ID ION-ACCELERATION; BEAMS
AB We present our recent experimental results of monoenergetic protons accelerated from the interaction of an intense terawatt CO2 laser pulse with a near-critical hydrogen gas target, with its density profile tailored by a hydrodynamic shock. A 5-ns Nd: YAG laser pulse is focused onto a piece of stainless steel foil mounted at the front edge of the gas jet nozzle orifice. The ablation launches a spherical shock into the near-critical gas column, which creates a sharp density gradient at the front edge of the target, with similar to 6X local density enhancement up to several times of critical density within similar to< 100 microns. With such density profile, we have obtained monoenergetic proton beams with good shot-to-shot reproducibility and energies up to 1.2 MeV.
C1 [Chen, Y. -H.; Helle, M. H.; Ting, A.; Gordon, D. F.] Naval Res Lab, Plasma Phys Div, Washington, DC 20375 USA.
[Polyanskiy, M. N.; Pogorelsky, I.; Babzien, M.] Brookhaven Natl Lab, Accelerator Test Facil, Upton, NY 11973 USA.
[Najmudin, Z.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England.
RP Chen, YH (reprint author), Naval Res Lab, Plasma Phys Div, Washington, DC 20375 USA.
EM yu-hsin.chen.ctr@nrl.navy.mil
RI Chen, Yu-hsin/I-3400-2012; Polyanskiy, Mikhail/E-8406-2010
OI Chen, Yu-hsin/0000-0002-9603-7371;
NR 11
TC 1
Z9 1
U1 2
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 978-1-62841-635-0
J9 PROC SPIE
PY 2015
VL 9514
AR 95140C
DI 10.1117/12.2182094
PG 6
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD0AK
UT WOS:000357019800005
ER
PT S
AU Helle, MH
Gordon, DF
Kaganovich, D
Chen, YH
Ting, A
AF Helle, M. H.
Gordon, D. F.
Kaganovich, D.
Chen, Y. -H.
Ting, A.
BE Ledingham, KWD
Esarey, E
Spohr, K
Schroeder, CB
McKenna, P
Gruner, FJ
Bolton, PR
TI Laser Accelerated Ions from Near Critical Gaseous Targets
SO LASER ACCELERATION OF ELECTRONS, PROTONS, AND IONS III; AND MEDICAL
APPLICATIONS OF LASER-GENERATED BEAMS OF PARTICLES III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Laser Acceleration of Electrons, Protons, and Ions III and
Medical Applications of Laser-Generated Beams of Particles III
CY APR 13-15, 2015
CL Prague, CZECH REPUBLIC
SP SPIE
DE ions; protons; plasma; laser acceleration; high-intensity lasers;
magnetic vortex acceleration
ID PLASMA; BEAMS
AB An intense laser pulse propagating through a near-critical density plasma is capable of generating a high peak current electron beam (similar to 100kA) by means of a laser wakefield operating in the bubble regime. This beam drives surface currents on the sheath of the cavitation that produces large azithumal magnetic fields (similar to 100 MG) and induces an on-axis electron current. These effects lead to a Z-pinch of the ambient plasma ions. Eventually the field confining the pinch relaxes and the ions explode radially due to self-repulsive forces. If this process occurs at a sharp exit gradient, the ions acquire some forward momentum consistent with the magnetic vortex acceleration mechanism. Fully 3D simulations indicate that the highest energy ions are emitted conically with a secondary lower energy ion beam accelerated on the axis.
C1 [Helle, M. H.; Gordon, D. F.; Kaganovich, D.; Ting, A.] Naval Res Lab, Plasma Phys Div, Washington, DC 20375 USA.
[Chen, Y. -H.] Res Support Instruments Inc, Lanham, MD 20706 USA.
RP Helle, MH (reprint author), Naval Res Lab, Plasma Phys Div, Washington, DC 20375 USA.
EM mike.helle@nrl.navy.mil
RI Chen, Yu-hsin/I-3400-2012;
OI Chen, Yu-hsin/0000-0002-9603-7371; Kaganovich,
Dmitri/0000-0002-0905-5871
NR 11
TC 1
Z9 1
U1 0
U2 6
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-635-0
J9 PROC SPIE
PY 2015
VL 9514
AR 951409
DI 10.1117/12.2178878
PG 7
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD0AK
UT WOS:000357019800003
ER
PT S
AU Aiken, DC
Ramsey, S
Mayo, T
Bellemare, J
Lambrakos, SG
Peak, J
AF Aiken, Daniel C.
Ramsey, Scott
Mayo, Troy
Bellemare, James
Lambrakos, Samuel G.
Peak, Joseph
BE Druy, MA
Crocombe, RA
Bannon, DP
TI Inverse Analysis of Triarylamine-Dye Transmission Spectra
SO NEXT-GENERATION SPECTROSCOPIC TECHNOLOGIES VIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Next-Generation Spectroscopic Technologies VIII
CY APR 20-22, 2015
CL Baltimore, MD
SP SPIE
DE Inverse analysis; Kramers-Kronig Relations; Lorentz Oscillator;
permittivity; dielectric response; transmissivity; least-squares;
constraint conditions
AB Inverse analysis of transmission spectra for triarylamine dye in acetone is presented. This analysis employs a parametric model of transmission through a sample of finite thickness, where the permittivity function is represented parametrically by a linear combination of Lorentz oscillator models. The results of this analysis provide estimates of the permittivity function for triarylamine dye, which can be adopted as input data to other types of models, such as those for prediction of transmission and reflectivity spectra for composites containing mixtures of dyes and other materials. In addition, the results of this analysis should contribute to a data base of estimated permittivity functions for practical analysis of spectra.
C1 [Aiken, Daniel C.; Ramsey, Scott; Mayo, Troy; Bellemare, James; Peak, Joseph] Naval Res Lab, Signature Technol Off, Washington, DC 20375 USA.
[Lambrakos, Samuel G.] Naval Res Lab, Ctr Computat Mat, Mat Sci & Technol Div, Washington, DC 20375 USA.
RP Aiken, DC (reprint author), Naval Res Lab, Signature Technol Off, 4555 Overlook Ave SW, Washington, DC 20375 USA.
NR 9
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 978-1-62841-598-8
J9 PROC SPIE
PY 2015
VL 9482
AR 948217
DI 10.1117/12.2087061
PG 11
WC Optics; Spectroscopy
SC Optics; Spectroscopy
GA BD0AF
UT WOS:000357016100034
ER
PT S
AU Major, KJ
Poutous, MK
Dunnill, KF
Ewing, KJ
Sanghera, JS
Aggarwal, ID
AF Major, Kevin J.
Poutous, Menelaos K.
Dunnill, Kevin F.
Ewing, Kenneth J.
Sanghera, Jasbinder S.
Aggarwal, Ishwar D.
BE Druy, MA
Crocombe, RA
Bannon, DP
TI Filter selection criteria for the discrimination of strongly overlapping
chemical spectra
SO NEXT-GENERATION SPECTROSCOPIC TECHNOLOGIES VIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Next-Generation Spectroscopic Technologies VIII
CY APR 20-22, 2015
CL Baltimore, MD
SP SPIE
DE FTIR; chemical sensing; broad-band filtered detection; overlapping
signal separation; comparative discrimination spectral detection.
ID KROMOSCOPY
AB Increasing the selectivity of sensors, while at the same time reducing their complexity, size and cost, are challenges to the sensing community. To this end, an area of exploration has been the development of filter-based chemical sensors. We have recently introduced an approach that utilizes multiple, broadband, infrared (IR) filters to enable discrimination of target chemicals, in the presence of potential interferents that have IR spectral signatures in a limited waveband. Our analysis technique, comparative discrimination spectral detection (CDSD), utilizes a set of broad IR transmission filters, to discriminate between a specific target chemical and multiple interferents with strongly overlapping IR spectra. We have demonstrated the ability of this technique to correctly distinguish between chemicals in the carbon - hydrogen stretch region of the IR absorption spectrum (2700 - 3300 cm(-1); 3.0 - 3.7 mu m).
We present a numerical study exploring the choices of desired optical filter sets, and the resulting overall discrimination by these filter sets. Filter parameter choices, such as the peak transmission position and bandwidth, are fundamental in filter-based chemical sensing discrimination systems. In this paper, we describe a systematic numerical approach used to explore how optical filter properties, and filter overlap affect corresponding discrimination results. We describe the interaction between the overlapping spectra and various filter sets on both target and interferent chemicals. We discuss which filter parameters provide optimum selectivity for specific target chemicals and how this information can be utilized to select filters for future direct-filter sensors based on this methodology.
C1 [Major, Kevin J.; Poutous, Menelaos K.; Dunnill, Kevin F.; Aggarwal, Ishwar D.] Univ N Carolina, Dept Phys & Opt Sci, Charlotte, NC 28223 USA.
[Ewing, Kenneth J.; Sanghera, Jasbinder S.] Naval Res Lab, Washington, DC 20375 USA.
RP Major, KJ (reprint author), Univ N Carolina, Dept Phys & Opt Sci, Charlotte, NC 28223 USA.
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 978-1-62841-598-8
J9 PROC SPIE
PY 2015
VL 9482
AR 948213
DI 10.1117/12.2176623
PG 8
WC Optics; Spectroscopy
SC Optics; Spectroscopy
GA BD0AF
UT WOS:000357016100030
ER
PT S
AU Cambrea, LR
Harris, DC
Salem, JA
AF Cambrea, Lee R.
Harris, Daniel C.
Salem, Jonathan A.
BE Zelinski, BJ
TI Weibull analysis and window lifetime prediction: a tutorial
SO WINDOW AND DOME TECHNOLOGIES AND MATERIALS XIV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Window and Dome Technologies and Materials XIV
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE Weibull analysis; slow crack growth; proof testing; window design;
window lifetime; transparent ceramics
ID CRACK
AB Mechanical strength measurements of transparent ceramic window material coupons are customarily fit to a Weibull equation that describes the strength and its distribution. Predictions of window lifetime under stress are commonly based on slow crack growth parameters obtained by measuring the mechanical strength of coupons over a range of constant stress rates. This tutorial paper describes how to derive Weibull and slow crack growth parameters from strength measurements and how to use those parameters to predict window lifetime under stress. Proof testing is employed to ensure that a window begins its life with a known, minimum strength.
C1 [Cambrea, Lee R.; Harris, Daniel C.] Naval Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA.
[Salem, Jonathan A.] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA.
RP Cambrea, LR (reprint author), Naval Air Warfare Ctr, Weap Div, 1900 N Knox Rd Stop 6303, China Lake, CA 93555 USA.
NR 9
TC 0
Z9 0
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-569-8
J9 PROC SPIE
PY 2015
VL 9453
AR 94530A
DI 10.1117/12.2087410
PG 12
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA BC9TC
UT WOS:000356858200007
ER
PT S
AU Kim, W
Baker, C
Villalobos, G
Bayya, S
Hunt, M
Sadowski, B
Aggarwal, I
Sanghera, J
AF Kim, Woohong
Baker, Colin
Villalobos, Guillermo
Bayya, Shyam
Hunt, Michael
Sadowski, Bryan
Aggarwal, Ishwar
Sanghera, Jas
BE Zelinski, BJ
TI Low Loss Spinel Windows for High Energy Lasers
SO WINDOW AND DOME TECHNOLOGIES AND MATERIALS XIV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Window and Dome Technologies and Materials XIV
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE Spinel; Transparent ceramics; Laser ceramics
ID POWDERS
AB Ideal exit aperture windows for high-energy laser (HEL) should possess low absorption and scattering losses and be environmentally rugged and strong in order to protect the laser gain medium without compromising the light propagating through the window. Spinel is an ideal candidate for this application due to its high mechanical strength, high thermal conductivity, and excellent optical transmission between 0.2 similar to 5 mu m. However, spinel ceramics fabricated with commercial powders often show inhomogeneity and suffer from absorption and scattering caused by various types of intrinsic and extrinsic impurities present in the powders. Here, we report on a convenient and economical powder purification method to significantly lower the absorption loss of transparent spinel ceramics using commercial powders. Acid washing was successfully used to reduce absorption loss in spinel ceramic fabricated using commercial powder from > 20,000 ppm/cm down to 75 ppm/cm.
C1 [Kim, Woohong; Baker, Colin; Villalobos, Guillermo; Bayya, Shyam; Sanghera, Jas] Naval Res Lab, Washington, DC 20375 USA.
[Hunt, Michael] Univ Res Fdn, Greenbelt, MD 20770 USA.
[Sadowski, Bryan; Aggarwal, Ishwar] Sotera Def Solut Inc, Annapolis Jct, MD 20701 USA.
RP Kim, W (reprint author), Naval Res Lab, 4555 Overlook Av SW, Washington, DC 20375 USA.
EM rick.kim@nrl.navy.mil
RI Baker, Colin/I-6657-2015
NR 12
TC 1
Z9 1
U1 1
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-569-8
J9 PROC SPIE
PY 2015
VL 9453
AR 945303
DI 10.1117/12.2176378
PG 6
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA BC9TC
UT WOS:000356858200002
ER
PT S
AU Sanghera, JS
Rock, B
Villalobos, G
Kim, W
Hunt, M
Sadowski, B
Bayya, S
Aggarwal, I
Imam, MA
AF Sanghera, Jasbinder S.
Rock, Ben
Villalobos, Guillermo
Kim, Woohong
Hunt, Michael
Sadowski, Bryan
Bayya, Shyam
Aggarwal, Ishwar
Imam, M. Ashraf
BE Zelinski, BJ
TI Highly Transparent Spinel Windows by Microwave Sintering
SO WINDOW AND DOME TECHNOLOGIES AND MATERIALS XIV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Window and Dome Technologies and Materials XIV
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE Spinel ceramic; microwave sintering; transparent
AB Spinel ceramic exhibits excellent optical and mechanical properties, but its widespread use in high volume applications has been limited primarily due to the high cost associated with hot pressing and finishing. While, we have previously demonstrated techniques to reduce finishing costs, in this paper we report on the use of microwave sintering to make spinel ceramic at significantly lower cost than traditional hot pressing. We also identify preferred grain growth as well as an intra-granular fracture mode.
C1 [Sanghera, Jasbinder S.; Rock, Ben; Villalobos, Guillermo; Kim, Woohong; Bayya, Shyam] Naval Res Lab, Washington, DC 20375 USA.
[Hunt, Michael] URF, Greenbelt, MD 20770 USA.
[Sadowski, Bryan; Aggarwal, Ishwar] Sotera Def Solut Inc, Annapolis Jct, MD 20701 USA.
[Imam, M. Ashraf] George Washington Univ, Washington, DC 20052 USA.
RP Sanghera, JS (reprint author), Naval Res Lab, Washington, DC 20375 USA.
NR 15
TC 1
Z9 1
U1 4
U2 9
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-569-8
J9 PROC SPIE
PY 2015
VL 9453
AR 945302
DI 10.1117/12.2180287
PG 8
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA BC9TC
UT WOS:000356858200001
ER
PT S
AU Springer, RM
Thomas, ME
Brown, AM
AF Springer, R. M.
Thomas, M. E.
Brown, A. M.
BE Zelinski, BJ
TI Scatter properties of polycrystalline YAG in the visible and
near-infrared
SO WINDOW AND DOME TECHNOLOGIES AND MATERIALS XIV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Window and Dome Technologies and Materials XIV
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE Scatter; total integrated scatter (TIS); diffuse scatter; Yttrium
Aluminum Garnet (YAG); Nd:YAG
AB Yttrium Aluminum Garnet (YAG) is an important laser host material. Ideal host materials have low loss at the laser transition frequency. This becomes more important as the gain length increases or a low gain transition is of interest. Unfortunately, single crystal YAG suffers from relatively high scatter caused by strain induced index of refraction variations generated by the growth method. For this reason polycrystalline YAG has been developed with virtually no strain. Furthermore, this material can be doped with concentrations that vary spatially. This can provide a tremendous advantage in matching the gain volume to the mode volume in a laser. However, because of the grain boundaries and porosity, polycrystalline materials have scatter loss. Angle resolved, in-plane scatter measurements of polycrystalline YAG and Nd: YAG are reported from 405 to 1064 nm. This covers the range of interest for laser operation but also with enough bandwidth to derive a physical understanding of the scatter mechanisms. A model is also applied to provide physical insight and interpolation and meaningful extrapolation of the experimental results.
C1 [Springer, R. M.] Naval Air Warfare Ctr, Div Aircraft, Patuxent River, MD 20670 USA.
[Thomas, M. E.] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA.
[Brown, A. M.] Johns Hopkins Univ, Whiting Sch Engn, Baltimore, MD USA.
RP Springer, RM (reprint author), Naval Air Warfare Ctr, Div Aircraft, Patuxent River, MD 20670 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 978-1-62841-569-8
J9 PROC SPIE
PY 2015
VL 9453
AR 945307
DI 10.1117/12.2181913
PG 11
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA BC9TC
UT WOS:000356858200005
ER
PT S
AU Sullivan, RM
AF Sullivan, Roger M.
BE Zelinski, BJ
TI A History of Semi-Active Laser Dome and Window Materials
SO WINDOW AND DOME TECHNOLOGIES AND MATERIALS XIV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Window and Dome Technologies and Materials XIV
CY APR 21-22, 2015
CL Baltimore, MD
SP SPIE
DE Semi-Active Laser Guidance; Dome Materials; Polycarbonate
ID POLYCARBONATE; MASER; GLASS; RUBY
AB Semi-Active Laser (SAL) guidance systems were developed starting in the mid-1960's and today form an important class of precision guided weapons. The laser wavelengths generally fall in the short wave infrared region of the spectrum. Relative to passive, image based, infrared seekers the optical demands placed on the domes or windows of SAL seekers is very modest, allowing the use of low cost, easily manufactured materials, such as polycarbonate. This paper will examine the transition of SAL window and dome science and technology from the laboratory to battlefield, with special emphasis on the story of polycarbonate domes.
C1 Off Naval Res, Arlington, VA 22203 USA.
RP Sullivan, RM (reprint author), Off Naval Res, 875 N Randolph St, Arlington, VA 22203 USA.
EM roger.sullivan@navy.mil
NR 52
TC 0
Z9 0
U1 1
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-569-8
J9 PROC SPIE
PY 2015
VL 9453
AR 945309
DI 10.1117/12.2177631
PG 15
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA BC9TC
UT WOS:000356858200006
ER
PT J
AU Young, G
Jacob, R
Zachariah, MR
AF Young, Gregory
Jacob, Rohit
Zachariah, Michael R.
TI HIGH PRESSURE IGNITION AND COMBUSTION OF ALUMINUM HYDRIDE
SO COMBUSTION SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Alane; Aluminum hydride; Combustion; Ignition
ID HYDROGEN; DECOMPOSITION; POLYMORPHS; PARTICLES; KINETICS;
THERMODYNAMICS; STORAGE; ALANE; ALH3
AB An experimental study was conducted to determine the high pressure ignition characteristics of alpha-aluminum hydride. Aluminum hydride particles were heated on a platinum filament at heating rates of approximately 1 x 10(5) K/s in a pressure vessel for pressures ranging up to about 7 MPa, in order to quantify the ignition temperature and to observe the ignition process. Experiments were conducted in air, argon, and nitrogen as the pressurizing environment. This study revealed that the dehydrogenation of aluminum hydride is not a function of pressure under the conditions tested. In addition, ignition temperatures were found to be approximately linearly related to pressure until pressures exceeded about 0.4 MPa, at which point they remained constant through the highest pressures tested. High speed imaging of the ignition process showed a dramatic change in the ignition behavior for pressures above 0.4 MPa, corresponding to what we believe is a threshold for H-2/air autoginition or perhaps even an explosion limit. We find that the combustion behavior of aluminum hydride particles shared many traits similar to what has been previously observed with aluminum particles including a diffusion flame surrounding the particle, spinning, jetting, and explosions/fragmentation. Quenched particles also showed clear evidence of gas phase combustion with parent particles containing nanofeatures, which were condensed from the gas phase. The results of this study provide additional understanding on the ignition and combustion process of aluminum hydride at extreme conditions, which may be useful in modeling efforts or in the development of solid propellants.
C1 [Young, Gregory] Naval Surface Warfare Ctr, Indian Head Div, RDT&E Dept, Indian Head, MD 20640 USA.
[Jacob, Rohit; Zachariah, Michael R.] Univ Maryland, College Pk, MD 20742 USA.
RP Young, G (reprint author), Naval Surface Warfare Ctr, Indian Head Div, RDT&E Dept, Indian Head, MD 20640 USA.
EM gregory.young1@navy.mil
FU ILIR program at the Naval Surface Warfare Center-Indian Head Division
(NSWC-IHD); Army Research Office
FX This research effort was supported through the ILIR program at the Naval
Surface Warfare Center-Indian Head Division (NSWC-IHD) and the Army
Research Office.
NR 36
TC 1
Z9 1
U1 5
U2 15
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0010-2202
EI 1563-521X
J9 COMBUST SCI TECHNOL
JI Combust. Sci. Technol.
PY 2015
VL 187
IS 9
BP 1335
EP 1350
DI 10.1080/00102202.2015.1038383
PG 16
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical
SC Thermodynamics; Energy & Fuels; Engineering
GA CL4ZI
UT WOS:000356967100002
ER
PT S
AU Carr, NB
Rowe, NC
AF Carr, Nicholas B.
Rowe, Neil C.
BE Ternovskiy, IV
Chin, P
TI A Prototype Forensic Toolkit for Industrial-Control-Systems Incident
Response
SO CYBER SENSING 2015
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Cyber Sensing
CY APR 21, 2015
CL Baltimore, MD
SP SPIE
DE Industrial control systems; cyberattacks; intrusion detection; testing;
incident response; critical infrastructure; WMIC; Bro
AB Industrial control systems (ICSs) are an important part of critical infrastructure in cyberspace. They are especially vulnerable to cyber-attacks because of their legacy hardware and software and the difficulty of changing it. We first survey the history of intrusions into ICSs, the more serious of which involved a continuing adversary presence on an ICS network. We discuss some common vulnerabilities and the categories of possible attacks, noting the frequent use of software written a long time ago. We propose a framework for designing ICS incident response under the constraints that no new software must be required and that interventions cannot impede the continuous processing that is the norm for such systems. We then discuss a prototype toolkit we built using the Windows Management Instrumentation Command-Line tool for host-based analysis and the Bro intrusion-detection software for network-based analysis. Particularly useful techniques we used were learning the historical range of parameters of numeric quantities so as to recognize anomalies, learning the usual addresses of connections to a node, observing Internet addresses (usually rare), observing anomalous network protocols such as unencrypted data transfers, observing unusual scheduled tasks, and comparing key files through registry entries and hash values to find malicious modifications. We tested our methods on actual data from ICSs including publicly-available data, voluntarily-submitted data, and researcher-provided ''advanced persistent threat" data. We found instances of interesting behavior in our experiments. Intrusions were generally easy to see because of the repetitive nature of most processing on ICSs, but operators need to be motivated to look.
C1 [Carr, Nicholas B.] Dept Homeland Secur, Washington, DC 20528 USA.
[Rowe, Neil C.] US Naval Postgrad Sch, Dept Comp Sci, Monterey, CA 93943 USA.
RP Carr, NB (reprint author), Dept Homeland Secur, Washington, DC 20528 USA.
EM ncrowe@nps.edu
NR 19
TC 0
Z9 0
U1 1
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-574-2
J9 PROC SPIE
PY 2015
VL 9458
AR 945804
DI 10.1117/12.2179796
PG 13
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BC9NR
UT WOS:000356673200003
ER
PT S
AU Yahyaoui, A
Rowe, NC
AF Yahyaoui, Aymen
Rowe, Neil C.
BE Ternovskiy, IV
Chin, P
TI Testing Simple Deceptive Honeypot Tools
SO CYBER SENSING 2015
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Cyber Sensing
CY APR 21, 2015
CL Baltimore, MD
SP SPIE
DE Honeypots; deception; Glastopf; Kippo; testing; virtualization; Web
sites; SSH
AB Deception can be a useful defensive technique against cyber-attacks; it has the advantage of unexpectedness to attackers and offers a variety of tactics. Honeypots are a good tool for deception. They act as decoy computers to confuse attackers and exhaust their time and resources. This work tested the effectiveness of two free honeypot tools in real networks by varying their location and virtualization, and the effects of adding more deception to them. We tested a Web honeypot tool, Glastopf and an SSH honeypot tool Kippo. We deployed the Web honeypot in both a residential network and our organization's network and as both real and virtual machines; the organization honeypot attracted more attackers starting in the third week. Results also showed that the virtual honeypots received attacks from more unique IP addresses. They also showed that adding deception to the Web honeypot, in the form of additional linked Web pages and interactive features, generated more interest by attackers. For the purpose of comparison, we used examined log files of a legitimate Web-site www.cmand.org. The traffic distributions for the Web honeypot and the legitimate Web site showed similarities (with much malicious traffic from Brazil), but the SSH honeypot was different (with much malicious traffic from China). Contrary to previous experiments where traffic to static honeypots decreased quickly, our honeypots received increasing traffic over a period of three months. It appears that both honeypot tools are useful for providing intelligence about cyber-attack methods, and that additional deception is helpful.
C1 [Yahyaoui, Aymen] Tunisian Air Force, Tunis, Tunisia.
[Rowe, Neil C.] US Naval Postgrad Sch, Dept Comp Sci, Monterey, CA USA.
RP Yahyaoui, A (reprint author), Tunisian Air Force, Tunis, Tunisia.
EM ncrowe@nps.edu
NR 9
TC 0
Z9 0
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-574-2
J9 PROC SPIE
PY 2015
VL 9458
AR 945803
DI 10.1117/12.2179793
PG 15
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BC9NR
UT WOS:000356673200002
ER
PT S
AU Baylog, JG
Wettergren, TA
AF Baylog, John G.
Wettergren, Thomas A.
BE Bishop, SS
Isaacs, JC
TI Multiple Pass Collaborative Search in the Presence of False Alarms
SO DETECTION AND SENSING OF MINES, EXPLOSIVE OBJECTS, AND OBSCURED TARGETS
XX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Detection and Sensing of Mines, Explosive Objects, and
Obscured Targets XX
CY APR 20-23, 2015
CL Baltimore, MD
SP SPIE
DE collaborative search; autonomous agents; mine hunting; search theory;
optimization
AB This paper addresses the planning of multiple collaborative searchers that are seeking to find hidden objects (i.e. mines) in environments where the sensor detection process is prone to false alarms. In such situations it is anticipated that collaboration between searchers that are examining the same sub-regions may be used to mitigate the impact of false alarms. A standard Receiver Operator Characteristic (ROC) analysis is conducted and the mapping between a single search pass ROC curve and an equivalent multiple search pass representation within a cumulative probability space is discussed. This mapping produces an analogous family of ROC curves for an increasing number of search passes using either a first detection or multiple occurrence performance criteria. The migration of ROC operating points is analyzed as additional search passes are included within a search plan and suggests the need to coordinate search effort with operating point selection. The mapping from waiting time event probabilities to a total error performance criterion weighted according to the cumulative probabilities of missed detection and false alarm is developed. Details of its application for threshold optimization within search planning is discussed and numerical results are provided to demonstrate the usefulness of the models in evaluating performance trade-offs.
C1 [Baylog, John G.; Wettergren, Thomas A.] Naval Undersea Warfare Ctr, 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
OI Wettergren, Thomas/0000-0002-6623-8412
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 978-1-62841-570-4
J9 PROC SPIE
PY 2015
VL 9454
AR 94541G
DI 10.1117/12.2177331
PG 10
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BC9OO
UT WOS:000356708000048
ER
PT S
AU Liu, GG
Hou, WL
Qiao, W
Han, M
AF Liu, Guigen
Hou, Weilin
Qiao, Wei
Han, Ming
BE Pickrell, G
Udd, E
Du, HH
TI Fiber-optic anemometer based on silicon Fabry-Perot interferometer
SO FIBER OPTIC SENSORS AND APPLICATIONS XII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Fiber Optic Sensors and Applications XII
CY APR 22-23, 2015
CL Baltimore, MD
SP SPIE
DE Fiber-optic sensors; anemometer; Fabry-Perot interferometer; silicon
film; thermal effects
ID BRAGG; SENSORS
AB Flowmeters have been finding vast applications in all kinds of industrial processes, such as process control, food quality surveillance, wind turbines, environment monitoring, etc. In this paper, we propose a new anemometer which consists of a Fabry-Perot interferometer (FPI) implemented using a thin silicon mounted on the tip of an optical fiber. The anemometer takes advantage of the superior thermal and optical properties of silicon. Silicon is transparent to infrared wavelength, while it absorbs visible light. Thus, the silicon FPI can be heated by a beam injected from a red diode laser while the infrared signals go through it without any interference from the heating light. The heat loss from the silicon film will increase when the sensor is placed in stronger flow (wind), which induces a decrease in the optical path of the silicon FPI, which lead to blueshifts the output spectrum. A higher wind speed corresponds to a larger wavelength shift. By tuning the heating power, the response range and sensitivity of the anemometer is changed. Experimental results demonstrate that a wavelength shift -0.574 nm was observed for a wind speed of 4 m/s. Better sensitivity is to be expected when stronger heating applied. The proposed sensor also features simple structure, low cost and fast response.
C1 [Liu, Guigen; Qiao, Wei; Han, Ming] Univ Nebraska, Dept Elect Engn, Lincoln, NE 68588 USA.
[Hou, Weilin] Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Han, M (reprint author), Univ Nebraska, Dept Elect Engn, Lincoln, NE 68588 USA.
EM mhan3@unl.edu
NR 9
TC 1
Z9 1
U1 0
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-596-4
J9 PROC SPIE
PY 2015
VL 9480
AR 94800A
DI 10.1117/12.2180258
PG 5
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BD0AJ
UT WOS:000357019100009
ER
PT S
AU Allen, MR
Kim, JJ
Agrawal, BN
AF Allen, Matthew R.
Kim, Jae Jun
Agrawal, Brij N.
BE Pham, KD
Chen, G
TI Correction of Active Space Telescope Mirror Using Woofer-Tweeter
Adaptive Optics
SO SENSORS AND SYSTEMS FOR SPACE APPLICATIONS VIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Sensors and Systems for Space Applications
CY APR 20-21, 2015
CL Baltimore, MD
SP SPIE
DE segmented mirror telescope; dual deformable mirror; woofer-tweeter;
space telescope; adaptive optics; active optics; wavefront control
AB Future large aperture space telescopes may use lightweight correctable active mirrors. The Naval Postgraduate School's Segmented Mirror Telescope (SMT) test bed uses 1-meter silicon carbide (SiC) active mirror segments to form a six-segment deployable 3-meter telescope. The active segments suffer from residual surface errors after a correction is applied. A deformable mirror is added at the SMT pupil plane to improve this residual error. The large active SMT segment represents the woofer, and a small continuous micro-electro-mechanical system (MEMS) deformable mirror represents the tweeter. A global influence matrix and closed loop constrained least squares controller command the active segment and additional deformable mirror as a single device. An interferometer measures the surface error and provides feedback to the controller. Simulation and experimental results demonstrate a significant improvement in wavefront error compared to a 2-step sequential woofer-tweeter constrained least squares control approach.
C1 [Allen, Matthew R.; Kim, Jae Jun; Agrawal, Brij N.] Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
RP Allen, MR (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, Watkins Hall,700 Dyer Rd, Monterey, CA 93943 USA.
NR 10
TC 1
Z9 1
U1 0
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-585-8
J9 PROC SPIE
PY 2015
VL 9469
AR 946902
DI 10.1117/12.2176311
PG 10
WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics;
Physics, Applied
SC Engineering; Optics; Physics
GA BC9WB
UT WOS:000356922000002
ER
PT S
AU Ouyang, B
Hou, WL
Caimi, FM
Dalgleish, FR
Vuorenkoski, AK
Gong, S
Britton, W
AF Ouyang, Bing
Hou, Weilin
Caimi, Frank M.
Dalgleish, Fraser R.
Vuorenkoski, Anni K.
Gong, Sue
Britton, Water
BE Ahmad, F
TI Near-infrared compressive line sensing imaging system using individually
addressable laser diode array
SO COMPRESSIVE SENSING IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Compressive Sensing IV
CY APR 22-24, 2015
CL Baltimore, MD
SP SPIE
DE Compressive Sensing; DMD; Laser; Infrared Imaging; Individually
Addressable Laser Diode Array
AB The compressive line sensing (CLS) active imaging system was proposed and validated through a series of test-tank experiments. As an energy-efficient alternative to the traditional line-scan serial image, the CLS system will be highly beneficial for long-duration surveillance missions using unmanned, power-constrained platforms such as unmanned aerial or underwater vehicles. In this paper, the application of an active spatial light modulator (SLM), the individually addressable laser diode array, in a CLS imaging system is investigated. In the CLS context, active SLM technology can be advantageous over passive SLMs such as the digital micro-mirror device. Initial experimental results are discussed.
C1 [Ouyang, Bing; Caimi, Frank M.; Dalgleish, Fraser R.; Vuorenkoski, Anni K.; Britton, Water] Florida Atlantic Univ, Harbor Branch, Oceanog Inst, Ft Pierce, FL 34946 USA.
[Hou, Weilin] Naval Res Lab, Stennis Space Ctr, MS 39556 USA.
[Gong, Sue] Texas Christian Univ, Dept Engn, Ft Worth, TX 76129 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 15
TC 0
Z9 0
U1 1
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-600-8
J9 PROC SPIE
PY 2015
VL 9484
DI 10.1117/12.2178804
PG 12
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BC9MK
UT WOS:000356619200015
ER
PT J
AU Lamb, KG
Warn-Varnas, A
AF Lamb, K. G.
Warn-Varnas, A.
TI Two-dimensional numerical simulations of shoaling internal solitary
waves at the ASIAEX site in the South China Sea
SO NONLINEAR PROCESSES IN GEOPHYSICS
LA English
DT Article
ID SLOPE-SHELF TOPOGRAPHY; TRAPPED CORES; TIDAL FLOW; GENERATION;
EVOLUTION; BREAKING; SOLITONS; DYNAMICS; ROTATION; BEHAVIOR
AB The interaction of barotropic tides with Luzon Strait topography generates some of the world's largest internal solitary waves which eventually shoal and dissipate on the western side of the northern South China Sea. Two-dimensional numerical simulations of the shoaling of a single internal solitary wave at the site of the Asian Seas International Acoustic Experiment (ASIAEX) have been undertaken in order to investigate the sensitivity of the shoaling process to the stratification and the underlying bathymetry and to explore the influence of rotation. The bulk of the simulations are inviscid; however, exploratory simulations using a vertical eddy-viscosity confined to a near bottom layer, along with a no-slip boundary condition, suggest that viscous effects may become important in water shallower than about 200 m. A shoaling solitary wave fissions into several waves. At depths of 200-300 m the front of the leading waves become nearly parallel to the bottom and develop a very steep back as has been observed. The leading waves are followed by waves of elevation (pedestals) that are conjugate to the waves of depression ahead and behind them. Horizontal resolutions of at least 50 m are required to simulate these well. Wave breaking was found to occur behind the second or third of the leading solitary waves, never at the back of the leading wave. Comparisons of the shoaling of waves started at depths of 1000 and 3000 m show significant differences and the shoaling waves can be significantly non-adiabatic even at depths greater than 2000 m. When waves reach a depth of 200 m, their amplitudes can be more than 50% larger than the largest possible solitary wave at that depth. The shoaling behaviour is sensitive to the presence of small-scale features in the bathymetry: a 200 m high bump at 700 m depth can result in the generation of many mode-two waves and of higher mode waves. Sensitivity to the stratification is considered by using three stratifications based on summer observations. They primarily differ in the depth of the thermocline. The generation of mode-two waves and the behaviour of the waves in shallow water is sensitive to this depth. Rotation affects the shoaling waves by reducing the amplitude of the leading waves via the radiation of long trailing inertiagravity waves. The nonlinear-dispersive evolution of these inertia-gravity waves results in the formation of secondary mode-one wave packets.
C1 [Lamb, K. G.] Univ Waterloo, Dept Appl Math, Waterloo, ON N2L 3G1, Canada.
[Warn-Varnas, A.] Naval Res Lab, Stennis Space Ctr, Stennis Space Ctr, MS 39539 USA.
RP Lamb, KG (reprint author), Univ Waterloo, Dept Appl Math, Waterloo, ON N2L 3G1, Canada.
EM kglamb@uwaterloo.ca
FU Office of Naval Research [PE 62435]; Natural Sciences and Engineering
Research Council of Canada (NSERC); Canadian Foundation for Innovation
FX This work is supported by the Office of Naval Research under PE 62435
(A. Warn-Varnas) and grants from the Natural Sciences and Engineering
Research Council of Canada (NSERC) and the Canadian Foundation for
Innovation (K. Lamb). The facilities of the Shared Hierarchical Academic
Research Computing Network (SHARCNET: http://www.sharcnet.ca) and
Compute/Calcul Canada were used for some of this work.
NR 51
TC 2
Z9 2
U1 5
U2 17
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1023-5809
J9 NONLINEAR PROC GEOPH
JI Nonlinear Process Geophys.
PY 2015
VL 22
IS 3
BP 289
EP 312
DI 10.5194/npg-22-289-2015
PG 24
WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
GA CL1AM
UT WOS:000356674400004
ER
PT J
AU Townsend, TK
Heuer, WB
Foos, EE
Kowalski, E
Yoon, W
Tischler, JG
AF Townsend, Troy K.
Heuer, William B.
Foos, Edward E.
Kowalski, Eric
Yoon, Woojun
Tischler, Joseph G.
TI Safer salts for CdTe nanocrystal solution processed solar cells: the
dual roles of ligand exchange and grain growth
SO JOURNAL OF MATERIALS CHEMISTRY A
LA English
DT Article
ID COLLOIDAL QUANTUM DOTS; CDSE NANOCRYSTALS; PHOTOVOLTAICS; EFFICIENCY;
CDCL2; SPECTROSCOPY; DEVICE; STEP
AB Inorganic CdSe/CdTe nanocrystals for solid-state photovoltaic devices are typically sintered into a bulk-like material after annealing in the presence of solid cadmium chloride. As in commercial CdTe devices, this salt exposure is a key component to improve device performance by promoting grain growth. However, in contrast to vapor depositions, we demonstrate that the role of the salt treatment also involves crucial ligand removal reactions, which are a unique challenge facing nanocrystal ink depositions. After testing other salts such as CdF2, CdCl2, CdBr2, CdI2 and Cd(NO3)(2) for oleate ligand removal as determined by FTIR, SEM imaging of CdTe grain growth revealed the largest grains were observed from reactions with CdCl2 (142 +/- 26 nm) and, to a lesser extent, CdBr2 (131 +/- 19 nm). These results were used to identify cadmium-free alternatives. Trimethylsilyl chloride (28.0 +/- 5.1 nm), NH4Br (75.5 +/- 31 nm) and NH4Cl (136 +/- 39 nm) were also tested, demonstrating comparable ligand removal and grain growth to the cadmium halides. In order to validate these observations, heterojunction photovoltaic devices were fabricated from CdSe/CdTe nanocrystals treated with non-toxic NH4Cl in place of the conventional CdCl2. Under AM 1.5G illumination, open circuit voltages (V-oc), short circuit currents (J(sc)) and efficiencies (eta) of solar cells processed with evaporated Au and commercial ITO were found to be V-oc = 0.46 +/- 0.02 V, J(sc) = 9.27 +/- 0.6 mA cm(-2), and eta = 1.73 +/- 0.24 demonstrating minimal differences in film morphology and device performance compared to those fabricated using cadmium chloride. Specific properties of the salts (solubility, reactivity, melting point and the identity of both the cation and the anion) were found to have a profound impact on grain growth and consequently device performance, suggesting the need for further investigation of additional non-toxic metal halide salts for this reaction.
C1 [Townsend, Troy K.] St Marys Coll Maryland, Dept Chem & Biochem, St Marys City, MD 20686 USA.
[Heuer, William B.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
[Foos, Edward E.] NSWC Indian Head EOD Technol Div, Indian Head, MD 20640 USA.
[Kowalski, Eric] US Naval Res Lab, ASEE NREIP Intern, Washington, DC USA.
[Yoon, Woojun; Tischler, Joseph G.] Naval Res Lab, Washington, DC 20375 USA.
RP Townsend, TK (reprint author), St Marys Coll Maryland, Dept Chem & Biochem, St Marys City, MD 20686 USA.
EM tktownsend@smcm.edu
FU Office of Naval Research (ONR); National Research Council (NRC)
FX The Office of Naval Research (ONR) is gratefully acknowledged for
financial support. This work was conducted while Professor Townsend held
a National Research Council (NRC) Postdoctoral Fellowship at the Naval
Research Laboratory. E.K. acknowledges the Naval Research Enterprise
Internship Program (NREIP).
NR 43
TC 4
Z9 4
U1 2
U2 27
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 2015
VL 3
IS 24
BP 13057
EP 13065
DI 10.1039/c5ta02488a
PG 9
WC Chemistry, Physical; Energy & Fuels; Materials Science,
Multidisciplinary
SC Chemistry; Energy & Fuels; Materials Science
GA CK2EG
UT WOS:000356022800058
ER
PT J
AU Babcock, RW
Senthill, A
Lamichhane, KM
Agsalda, J
Lindbo, GD
AF Babcock, Roger W., Jr.
Senthill, Atiim
Lamichhane, Krishna M.
Agsalda, Jessica
Lindbo, Glen D.
TI Enhanced nitrogen removal with an onsite aerobic cyclic biological
treatment unit
SO WATER SCIENCE AND TECHNOLOGY
LA English
DT Article
DE aerobic treatment unit; nitrogen removal; onsite disposal system
ID WASTE-WATER; SYSTEM
AB Coastal Zone Act Reauthorization Amendments (CZARA, Section 6217) necessitate the requirement that onsite wastewater disposal units located near impaired surface waters or groundwater to provide at least 50% nitrogen removal. Approximately 38% of Hawaii households use onsite systems including septic tanks and cesspools that cannot meet this requirement. Upgrades to aerobic treatment units (ATUs) are a possible compliance solution. In Hawaii, ATUs must meet National Sanitation Foundation Standard 40 (NSF40) Class I effluent criteria. Previously, a multi-chamber, flow-through, combined attached/suspended growth type ATU (OESIS-750) and presently, a sequencing batch type ATU (CBT 0.8KF-210) were evaluated for NSF40 compliance, nutrient removal capability (NSF245), and adaptability for water reuse (NSF350). Both units easily achieved the NSF40 Class I effluent criteria. While the OESIS-750 achieved only 19% nitrogen removal, the CBT unit achieved 81% nitrogen removal, meeting the NSF245 criteria and CZARA requirements for applications in critical wastewater disposal areas. In addition, the CBT consistently produced effluent with turbidity less than 2 NTU (NSF350) and UVT254 greater than 70%, facilitating the production of unrestricted-use recycled water.
C1 [Babcock, Roger W., Jr.] Univ Hawaii, Dept Civil & Environm Engn, Honolulu, HI 96822 USA.
[Senthill, Atiim] US Navy, Dept Navy, Washington, DC USA.
[Lamichhane, Krishna M.] Univ Hawaii, Hawaii Nat Energy Inst, Honolulu, HI 96822 USA.
[Agsalda, Jessica] Austin Tsutsumi & Associates, Honolulu, HI 96817 USA.
[Lindbo, Glen D.] Int Wastewater Technol, Waipahu, HI 96789 USA.
RP Babcock, RW (reprint author), Univ Hawaii, Dept Civil & Environm Engn, 2540 Dole St,Holmes 383, Honolulu, HI 96822 USA.
EM rbabcock@hawaii.edu
FU International Wastewater Technologies
FX The authors would like to thank International Wastewater Technologies
for sponsoring the research.
NR 18
TC 0
Z9 0
U1 2
U2 5
PU IWA PUBLISHING
PI LONDON
PA ALLIANCE HOUSE, 12 CAXTON ST, LONDON SW1H0QS, ENGLAND
SN 0273-1223
EI 1996-9732
J9 WATER SCI TECHNOL
JI Water Sci. Technol.
PY 2015
VL 71
IS 12
BP 1831
EP 1837
DI 10.2166/wst.2015.172
PG 7
WC Engineering, Environmental; Environmental Sciences; Water Resources
SC Engineering; Environmental Sciences & Ecology; Water Resources
GA CK5BP
UT WOS:000356237400011
PM 26067503
ER
PT J
AU Jung, E
Albrecht, BA
Jonsson, HH
Chen, YC
Seinfeld, JH
Sorooshian, A
Metcalf, AR
Song, S
Fang, M
Russell, LM
AF Jung, E.
Albrecht, B. A.
Jonsson, H. H.
Chen, Y. -C.
Seinfeld, J. H.
Sorooshian, A.
Metcalf, A. R.
Song, S.
Fang, M.
Russell, L. M.
TI Precipitation effects of giant cloud condensation nuclei artificially
introduced into stratocumulus clouds
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID MARINE STRATOCUMULUS; WARM RAIN; HYGROSCOPIC FLARES; CONVECTIVE CLOUDS;
MODEL; SIMULATION; BALANCE; RADAR
AB To study the effect of giant cloud condensation nuclei (GCCN) on precipitation processes in stratocumulus clouds, 1-10 mu m diameter salt particles (salt powder) were released from an aircraft while flying near the cloud top on 3 August 2011 off the central coast of California. The seeded area was subsequently sampled from the aircraft that was equipped with aerosol, cloud, and precipitation probes and an upward-facing cloud radar. During post-seeding sampling, made 30-60 min after seeding, the mean cloud droplet size increased, the droplet number concentration decreased, and large drop (e.g., diameter larger than 10 mu m) concentration increased. Average drizzle rates increased from about 0.05 to 0.20 mm h(-1), and the liquid water path decreased from about 52 to 43 g m(-2). Strong radar returns associated with drizzle were observed on the post-seeding cloud-base level-leg flights and were accompanied by a substantial depletion of the cloud liquid water content. The changes were large enough to suggest that the salt particles with concentrations estimated to be 10(-2) to 10(-4) cm(-3) resulted in a four-fold increase in the cloud-base rainfall rate and depletion of the cloud water due to rainout. In contrast, a case is shown where the cloud was already precipitating (on 10 August) and the effect of adding GCCN to the cloud was insignificant.
C1 [Jung, E.; Albrecht, B. A.; Song, S.; Fang, M.] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA.
[Jonsson, H. H.] Naval Postgrad Sch, Ctr Interdisciplinary Remotely Piloted Aircraft S, Monterey, CA USA.
[Chen, Y. -C.; Seinfeld, J. H.; Metcalf, A. R.] CALTECH, Pasadena, CA 91125 USA.
[Chen, Y. -C.] CALTECH, Jet Prop Lab, Pasadena, CA USA.
[Sorooshian, A.] Univ Arizona, Dept Chem & Environm Engn, Tucson, AZ USA.
[Sorooshian, A.] Univ Arizona, Dept Atmospher Sci, Tucson, AZ USA.
[Russell, L. M.] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA.
RP Jung, E (reprint author), Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA.
EM eunsil.jung@gmail.com
RI Metcalf, Andrew/C-5666-2012;
OI Metcalf, Andrew/0000-0003-0385-1356; Sorooshian,
Armin/0000-0002-2243-2264
FU National Science Foundation [AGS-1013423, AGS-1008848, AGS-1013381,
AGS-1013319, ATM-0744636, AGS-0821599, ATM-0349015]; Office of Naval
Research [N00014-11-1-0783, N00014-10-1-0811, N00014-10-1-0200,
N00014-08-1-0465]
FX The E-PEACE field campaign and modeling studies were funded by the
National Science Foundation (AGS-1013423; AGS-1008848; AGS-1013381;
AGS-1013319; ATM-0744636; AGS-0821599; ATM-0349015) and the Office of
Naval Research (N00014-11-1-0783; N00014-10-1-0811; N00014-10-1-0200;
N00014-08-1-0465). The authors gratefully acknowledge the crew of the
CIRPAS Twin Otter for their assistance during the field campaign and
Daniel Rosenfeld for providing the powdered salt. We also appreciate the
outstanding efforts of Tom Snowdon on the design and fabrication of the
salt-powder dispensing system. We greatly appreciate the thoughtful
comments provided by the reviewer Jorgen Jensen.
NR 28
TC 3
Z9 3
U1 3
U2 14
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 2015
VL 15
IS 10
BP 5645
EP 5658
DI 10.5194/acp-15-5645-2015
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CJ2BM
UT WOS:000355289200020
ER
PT J
AU Buchard, V
da Silva, AM
Colarco, PR
Darmenov, A
Randles, CA
Govindaraju, R
Torres, O
Campbell, J
Spurr, R
AF Buchard, V.
da Silva, A. M.
Colarco, P. R.
Darmenov, A.
Randles, C. A.
Govindaraju, R.
Torres, O.
Campbell, J.
Spurr, R.
TI Using the OMI aerosol index and absorption aerosol optical depth to
evaluate the NASA MERRA Aerosol Reanalysis
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID OZONE MONITORING INSTRUMENT; REMOTE-SENSING OBSERVATIONS; SKY RADIANCE
MEASUREMENTS; SPECTRAL DEPENDENCE; GLOBAL DISTRIBUTION;
LIGHT-ABSORPTION; ORGANIC-CARBON; DUST TRANSPORT; GOCART MODEL; AERONET
DATA
AB A radiative transfer interface has been developed to simulate the UV aerosol index (AI) from the NASA Goddard Earth Observing System version 5 (GEOS-5) aerosol assimilated fields. The purpose of this work is to use the AI and aerosol absorption optical depth (AAOD) derived from the Ozone Monitoring Instrument (OMI) measurements as independent validation for the Modern Era Retrospective analysis for Research and Applications Aerosol Reanalysis (MERRAero). MERRAero is based on a version of the GEOS-5 model that is radiatively coupled to the Goddard Chemistry, Aerosol, Radiation, and Transport (GOCART) aerosol module and includes assimilation of aerosol optical depth (AOD) from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor. Since AI is dependent on aerosol concentration, optical properties and altitude of the aerosol layer, we make use of complementary observations to fully diagnose the model, including AOD from the Multi-angle Imaging SpectroRadiometer (MISR), aerosol retrievals from the AErosol RObotic NETwork (AERONET) and attenuated backscatter coefficients from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) mission to ascertain potential misplacement of plume height by the model. By sampling dust, biomass burning and pollution events in 2007 we have compared model-produced AI and AAOD with the corresponding OMI products, identifying regions where the model representation of absorbing aerosols was deficient. As a result of this study over the Saharan dust region, we have obtained a new set of dust aerosol optical properties that retains consistency with the MODIS AOD data that were assimilated, while resulting in better agreement with aerosol absorption measurements from OMI. The analysis conducted over the southern African and South American biomass burning regions indicates that revising the spectrally dependent aerosol absorption properties in the near-UV region improves the modeled-observed AI comparisons. Finally, during a period where the Asian region was mainly dominated by anthropogenic aerosols, we have performed a qualitative analysis in which the specification of anthropogenic emissions in GEOS-5 is adjusted to provide insight into discrepancies observed in AI comparisons.
C1 [Buchard, V.; da Silva, A. M.; Colarco, P. R.; Darmenov, A.; Randles, C. A.; Govindaraju, R.; Torres, O.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Buchard, V.] Univ Space Res Assoc, GESTAR, Columbia, MD USA.
[Randles, C. A.] Morgan State Univ, GESTAR, Baltimore, MD 21239 USA.
[Govindaraju, R.] Sci Syst & Applicat Inc, Lanham, MD USA.
[Campbell, J.] Naval Res Lab, Marine Meteorol Div, Monterey, CA USA.
[Spurr, R.] RT Solut Inc, Cambridge, MA 02138 USA.
RP Buchard, V (reprint author), NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
EM virginie.buchard@nasa.gov
RI Campbell, James/C-4884-2012; Colarco, Peter/D-8637-2012
OI Campbell, James/0000-0003-0251-4550; Colarco, Peter/0000-0003-3525-1662
FU Office of Naval Research [322]; NASA Langley Research Center Interagency
[RPO201422]
FX Author J. Campbell acknowledges the support of the Office of Naval
Research Code 322 and NASA Langley Research Center Interagency Agreement
RPO201422 on behalf of the CALIPSO Science Team.
NR 67
TC 21
Z9 21
U1 0
U2 16
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 2015
VL 15
IS 10
BP 5743
EP 5760
DI 10.5194/acp-15-5743-2015
PG 18
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CJ2BM
UT WOS:000355289200026
ER
PT J
AU Allen, DR
Hoppel, KW
Kuhl, DD
AF Allen, D. R.
Hoppel, K. W.
Kuhl, D. D.
TI Wind extraction potential from ensemble Kalman filter assimilation of
stratospheric ozone using a global shallow water model
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID 4-DIMENSIONAL VARIATIONAL ASSIMILATION; CHEMICAL-CONSTITUENT
OBSERVATIONS; 4D-VAR ASSIMILATION; COVARIANCE LOCALIZATION; BALANCE;
SYSTEM; IMPACT; INITIALIZATION; PREDICTION; EQUATIONS
AB The feasibility of extracting wind information from stratospheric ozone observations is tested using ensemble Kalman filter (EnKF) data assimilation (DA) and a global shallow water model that includes advection of an ozone-like tracer. Simulated observations are created from a truth run (TR) that resembles the Northern Hemisphere winter stratosphere with a polar vortex disturbed by planetary-scale wave forcing. Ozone observations mimic sampling of a polar-orbiting satellite, while geopotential height observations are randomly placed in space and time. EnKF experiments are performed assimilating ozone, height, or both, over a 10-day period. The DA is also implemented using two different pairs of flow variables: zonal and meridional wind (EnKF-uv) and stream function and velocity potential (EnKF-psi chi). Each experiment is tuned for optimal localization length, while the ensemble spread is adaptively inflated using the TR. The experiments are evaluated using the maximum wind extraction potential (WEP). Ozone only assimilation improves winds (WEP = 46% for EnKF-uv, and 58% for EnKF-psi chi), but suffers from spurious gravity wave generation. Application of nonlinear normal mode initialization (NMI) greatly reduces the unwanted imbalance and increases the WEP for EnKF-uv (84 %) and EnKF-psi chi (81 %). Assimilation of only height observations also improved the winds (WEP = 60% for EnKF-uv, and 69% for EnKF-psi chi), with much less imbalance compared to the ozone experiment. The assimilation of both height and ozone performed the best, with WEP increasing to similar to 87% (similar to 90% with NMI) for both EnKF-uv and EnKF-psi chi, demonstrating that wind extraction from ozone assimilation can be beneficial even in a data-rich environment. Ozone assimilation particularly improves the tropical winds, which are not well constrained by height observations due to lack of geostrophy.
C1 [Allen, D. R.; Hoppel, K. W.; Kuhl, D. 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 US Office of Naval Research
FX We would like to thank Alan Geer, one anonymous reviewer, and the editor
for helpful comments on the manuscript. This work was funded by the US
Office of Naval Research.
NR 51
TC 2
Z9 2
U1 0
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 2015
VL 15
IS 10
BP 5835
EP 5850
DI 10.5194/acp-15-5835-2015
PG 16
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CJ2BM
UT WOS:000355289200032
ER
PT J
AU Chervin, CN
Ko, JS
Miller, BW
Dudek, L
Mansour, AN
Donakowski, MD
Brintlinger, T
Gogotsi, P
Chattopadhyay, S
Shibata, T
Parker, JF
Hahn, BP
Rolison, DR
Long, JW
AF Chervin, Christopher N.
Ko, Jesse S.
Miller, Bryan W.
Dudek, Lisa
Mansour, Azzam N.
Donakowski, Martin D.
Brintlinger, Todd
Gogotsi, Pavel
Chattopadhyay, Soma
Shibata, Tomohiro
Parker, Joseph F.
Hahn, Benjamin P.
Rolison, Debra R.
Long, Jeffrey W.
TI Defective by design: vanadium-substituted iron oxide nanoarchitectures
as cation-insertion hosts for electrochemical charge storage
SO JOURNAL OF MATERIALS CHEMISTRY A
LA English
DT Article
ID LITHIUM-ION BATTERIES; K-EDGE; AEROGELS; V2O5; NANOPARTICLES;
GAMMA-FE2O3; MONOLITHS; EPOXIDES; IFEFFIT; CATHODE
AB Vanadium-substituted iron oxide aerogels (2 : 1 Fe : V ratio; VFe2Ox) are synthesized using an epoxide-initiated sol-gel method to form high surface-area, mesoporous materials in which the degree of crystallinity and concentration of defects are tuned via thermal treatments under controlled atmospheres. Thermal processing of the X-ray amorphous, as-synthesized VFe2Ox aerogels at 300 degrees C under O-2-rich conditions removes residual organic byproducts while maintaining a highly defective gamma-Fe2O3-like local structure with minimal long-range order and vanadium in the +5 state. When as-synthesized VFe2Ox aerogels are heated under low partial pressure of O-2 (e.g., flowing argon), a fraction of vanadium sites are reduced to the +4 state, driving crystallization to a Fe3O4-like cubic phase. Subsequent thermal oxidation of this nanocrystalline VFe2Ox aerogel re-oxidizes vanadium +4 to +5, creating additional cation vacancies and re-introducing disordered oxide domains. We correlate the electrochemical charge-storage properties of this series of VFe2Ox aerogels with their degree of order and chemical state, as verified by X-ray diffraction, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy. We find that the disordered O-2-heated VFe2Ox aerogel yields the highest Li+- and Na+-insertion capacities among this series, approaching 130 mA h g(-1) and 70 mA h g(-1), respectively. Direct heat-treatment of the VFe2Ox aerogel in flowing argon to yield the partially reduced, nanocrystalline form results in significantly lower Li+-insertion capacity (77 mA h g(-1)), which improves to 105 mA h g(-1) by thermal oxidation to create additional vacancies and structural disorder.
C1 [Chervin, Christopher N.; Miller, Bryan W.; Donakowski, Martin D.; Gogotsi, Pavel; Parker, Joseph F.; Hahn, Benjamin P.; Rolison, Debra R.; Long, Jeffrey W.] US Naval Res Lab, Surface Chem Branch, Washington, DC 20375 USA.
[Ko, Jesse S.] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA.
[Dudek, Lisa] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
[Mansour, Azzam N.] Naval Surface Warfare Ctr, Carderock Div, Mat & Power Syst Branch, West Bethesda, MD 20817 USA.
[Brintlinger, Todd] US Naval Res Lab, Mat & Sensors Branch, Washington, DC 20375 USA.
[Chattopadhyay, Soma] Elgin Community Coll, Dept Phys Sci, Elgin, IL 60123 USA.
[Chattopadhyay, Soma; Shibata, Tomohiro] IIT, CSRRI, Adv Photon Source, Argonne, IL 60439 USA.
RP Chervin, CN (reprint author), US Naval Res Lab, Surface Chem Branch, Code 6170, Washington, DC 20375 USA.
EM christopher.chervin@nrl.navy.mil; jeffrey.long@nrl.navy.mil
RI ID, MRCAT/G-7586-2011
FU U.S. Office of Naval Research; U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
FX This work was supported by the U.S. Office of Naval Research. Use of the
Advanced Photon Source at Argonne National Laboratory was supported by
the U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract no. DE-AC02-06CH11357. M.D.D. and B.P.H. were
NRC-NRL post-doctoral associates.
NR 47
TC 3
Z9 3
U1 9
U2 52
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 2015
VL 3
IS 22
BP 12059
EP 12068
DI 10.1039/c5ta01507c
PG 10
WC Chemistry, Physical; Energy & Fuels; Materials Science,
Multidisciplinary
SC Chemistry; Energy & Fuels; Materials Science
GA CJ5UK
UT WOS:000355556300049
ER
PT J
AU Christensen, M
Zhang, J
Reid, JS
Zhang, X
Hyer, EJ
Smirnov, A
AF Christensen, M.
Zhang, J.
Reid, J. S.
Zhang, X.
Hyer, E. J.
Smirnov, A.
TI A theoretical study of the effect of subsurface oceanic bubbles on the
enhanced aerosol optical depth band over the southern oceans as detected
from MODIS and MISR
SO ATMOSPHERIC MEASUREMENT TECHNIQUES
LA English
DT Article
ID BREAKING WIND-WAVES; NATURAL MICROBUBBLES; DATA-ASSIMILATION;
AQUEOUS-MEDIA; SEA FOAM; REFLECTANCE; RETRIEVALS; AERONET; WATER;
ENTRAINMENT
AB Submerged oceanic bubbles, which have a much longer life span than whitecaps or bubble rafts, have been hypothesized to increase the water-leaving radiance and thus affect satellite-based estimates of water-leaving radiance to non-trivial levels. This study explores this effect further to determine whether such bubbles are of sufficient magnitude to impact satellite aerosol optical depth (AOD) retrievals through perturbation of the lower boundary conditions. There has been significant discussion in the community regarding the high positive biases in retrieved AODs in many remote ocean regions. In this study, for the first time, the effects of oceanic bubbles on satellite retrievals of AOD are studied by using a linked Second Simulation of a Satellite Signal in the Solar Spectrum (6S) atmospheric and HydroLight oceanic radiative transfer models. The results suggest an insignificant impact on AOD retrievals in regions with near-surface wind speeds of less than 12ms(-1). However, the impact of bubbles on aerosol retrievals could be on the order of 0.02-0.04 for higher wind conditions within the scope of our simulations (e. g., winds < 20m s(-1). This bias is propagated to global scales using 1 year of Moderate Resolution Imaging Spectroradiometer (MODIS) and Advanced Microwave Scanning Radiometer EOS (AMSR-E) data to investigate the possible impacts of oceanic bubbles on an enhanced AOD belt observed over the high-latitude southern oceans (also called the enhanced southern oceans anomaly, or ESOA) by some passive satellite sensors. Ultimately, this study is supportive of the null hypothesis: submerged bubbles are not the major contributor to the ESOA feature. This said, as retrievals progress to higher and higher resolutions, such as from airborne platforms, the uniform bubble correction in clean marine conditions should probably be separately accounted for against individual bright whitecaps and bubble rafts.
C1 [Christensen, M.; Zhang, J.] Univ N Dakota, Dept Atmospher Sci, Grand Forks, ND 58201 USA.
[Reid, J. S.; Hyer, E. J.] Naval Res Lab, Marine Meteorol Div, Monterey, CA USA.
[Zhang, X.] Univ N Dakota, Dept Earth Syst Sci & Policy, Grand Forks, ND 58201 USA.
[Smirnov, A.] Sci Syst & Applicat Inc, Lanham, MD USA.
[Smirnov, A.] NASA Goddard Space Flight Ctr, Greenbelt, MD USA.
RP Zhang, J (reprint author), Univ N Dakota, Dept Atmospher Sci, Grand Forks, ND 58201 USA.
EM jzhang@atmos.und.edu
RI Hyer, Edward/E-7734-2011; Reid, Jeffrey/B-7633-2014
OI Hyer, Edward/0000-0001-8636-2026; Reid, Jeffrey/0000-0002-5147-7955
FU Office of Naval Research Codes 322 [N00014-10-0816, N0001414AF00002];
NASA project [NNX14AJ13G]; NASA EPSCoR [NNX13AB20A]; NSF [IIA-1355466]
FX Jianglong Zhang and Jeffrey Reid acknowledge the support from the Office
of Naval Research Codes 322 (N00014-10-0816 and N0001414AF00002).
Matthew Christensen and Jianglong Zhang acknowledge the support of the
NASA project (NNX14AJ13G). Xiaodong Zhang acknowledges the support of a
NASA EPSCoR grant NNX13AB20A as well as NSF IIA-1355466. MODIS data were
obtained from the Level 1 and Atmosphere Archive and Distribution System
(LAADS). We also thank individual PIs from the AERONET sites for the
sunphotometer data. We also thank Andrew Sayer and another reviewer for
their constructive comments/suggestions.
NR 57
TC 0
Z9 0
U1 2
U2 13
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 2015
VL 8
IS 5
BP 2149
EP 2160
DI 10.5194/amt-8-2149-2015
PG 12
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CJ2BJ
UT WOS:000355288900014
ER
PT J
AU Angulo, I
Grande, O
Jenn, D
Guerra, D
de la Vega, D
AF Angulo, I.
Grande, O.
Jenn, D.
Guerra, D.
de la Vega, D.
TI Estimating reflectivity values from wind turbines for analyzing the
potential impact on weather radar services
SO ATMOSPHERIC MEASUREMENT TECHNIQUES
LA English
DT Article
ID FARMS
AB The World Meteorological Organization (WMO) has repeatedly expressed concern over the increasing number of impact cases of wind turbine farms on weather radars. Current signal processing techniques to mitigate wind turbine clutter (WTC) are scarce, so the most practical approach to this issue is the assessment of the potential interference from a wind farm before it is installed. To do so, and in order to obtain a WTC reflectivity model, it is crucial to estimate the radar cross section (RCS) of the wind turbines to be built, which represents the power percentage of the radar signal that is backscattered to the radar receiver.
For the proposed model, a representative scenario has been chosen in which both the weather radar and the wind farm are placed on clear areas; i. e., wind turbines are supposed to be illuminated only by the lowest elevation angles of the radar beam.
This paper first characterizes the RCS of wind turbines in the weather radar frequency bands by means of computer simulations based on the physical optics theory and then proposes a simplified model to estimate wind turbine RCS values. This model is of great help in the evaluation of the potential impact of a certain wind farm on the weather radar operation.
C1 [Angulo, I.; Grande, O.; Guerra, D.; de la Vega, D.] Univ Basque Country UPV EHU, Bilbao, Spain.
[Jenn, D.] Naval Postgrad Sch, Monterey, CA USA.
RP de la Vega, D (reprint author), Univ Basque Country UPV EHU, Bilbao, Spain.
EM david.delavega@ehu.es
OI de la Vega, David/0000-0003-4811-4173
FU Spanish Ministry of Economy and Competitiveness (Ministerio de Economia
y Competitividad) [TEC2012-32370]; University of the Basque Country
(Euskal Herriko Unibertsitatea)
FX This work has been partially supported by the Spanish Ministry of
Economy and Competitiveness (Ministerio de Economia y Competitividad,
project TEC2012-32370) and the University of the Basque Country (Euskal
Herriko Unibertsitatea, program for the specialization of the
postdoctoral researcher staff).
NR 26
TC 1
Z9 1
U1 2
U2 7
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 2015
VL 8
IS 5
BP 2183
EP 2193
DI 10.5194/amt-8-2183-2015
PG 11
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CJ2BJ
UT WOS:000355288900017
ER
PT J
AU Matsumae, T
Koehler, AD
Greenlee, JD
Anderson, TJ
Baumgart, H
Jernigan, GG
Hobart, KD
Kub, FJ
AF Matsumae, T.
Koehler, A. D.
Greenlee, J. D.
Anderson, T. J.
Baumgart, H.
Jernigan, G. G.
Hobart, K. D.
Kub, F. J.
TI Temporary Bonding with Polydimethylglutarimide Based Lift Off Resist as
a Layer Transfer Platform
SO ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
LA English
DT Article
ID SILICON-WAFERS
AB Bonding of lift off resist (LOR) was performed to realize temporary wafer bonding without residue. Bonding process conditions such as spin speed, pre-bake temperature, and bonding temperature were optimized to obtain a large bonded area with high bond strength. Under optimized process conditions, a bonded area covering over 98% of the wafer surface, with a room temperature bond strength of nearly 5 J/m(2) is achieved. During razor blade testing, fracture often occurs at the Si wafer. Moreover, debonding using an N-Methyl-2-pyrrolidone (NMP)-based solvent left the wafer surface extremely small amount of residue. Thus, the optimized bonding processed developed in this research is suitable for a clean temporary bonding process. (C) The Author(s) 2015. 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 [Matsumae, T.; Baumgart, H.] Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA.
[Koehler, A. D.; Anderson, T. J.; Jernigan, G. G.; Hobart, K. D.; Kub, F. J.] US Naval Res Lab, Washington, DC 20375 USA.
[Greenlee, J. D.] NRL, Washington, DC 20375 USA.
RP Matsumae, T (reprint author), Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA.
EM takashi.mtm@gmail.com
NR 13
TC 2
Z9 2
U1 2
U2 8
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 2015
VL 4
IS 7
BP P190
EP P194
DI 10.1149/2.0031507jss
PG 5
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA CJ0SA
UT WOS:000355187000012
ER
PT J
AU Weiner, RG
Smith, AF
Skrabalak, SE
AF Weiner, Rebecca G.
Smith, Alison F.
Skrabalak, Sara E.
TI Synthesis of hollow and trimetallic nanostructures by seed-mediated
co-reduction
SO CHEMICAL COMMUNICATIONS
LA English
DT Article
ID GALVANIC REPLACEMENT REACTIONS; METAL NANOSTRUCTURES;
CHEMICAL-STABILITY; SILVER NANOCUBES; GOLD NANOCAGES; SERS ACTIVITY; AG
NANOCUBES; NANOCRYSTALS; AU; DEPOSITION
AB Coupling seed-mediated co-reduction with galvanic replacement for the first time provides a route to trimetallic (Ag-Au-Pd) nanostructures with hollow interiors. Moreover, manipulating the synthetic conditions can suppress galvanic replacement and facilitate formation of trimetallic core@shell (Ag@Au-Pd) nanostructures. These results illustrate the role of seed composition in the synthesis of architecturally defined multimetallic nanostructures by seed-mediated co-reduction.
C1 [Weiner, Rebecca G.; Smith, Alison F.; Skrabalak, Sara E.] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA.
[Smith, Alison F.] NAVSEA Crane, Crane, IN 47533 USA.
RP Skrabalak, SE (reprint author), Indiana Univ, Dept Chem, 800 E Kirkwood, Bloomington, IN 47405 USA.
EM sskrabal@indiana.edu
FU Indiana University start-up funds; NSF [CHE-1306853]
FX This work was supported by Indiana University start-up funds and NSF
Award CHE-1306853. SES is a Cottrell Scholar (Research Corporation),
Alfred P. Sloan Fellow, and Camille Dreyfus Teacher-Scholar. We thank
Dr. David Morgan and the IU Nanoscale Characterization Facility for
access to instrumentation.
NR 29
TC 4
Z9 4
U1 6
U2 47
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 1359-7345
EI 1364-548X
J9 CHEM COMMUN
JI Chem. Commun.
PY 2015
VL 51
IS 42
BP 8872
EP 8875
DI 10.1039/c5cc02318a
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA CI1CG
UT WOS:000354477600035
PM 25925127
ER
PT J
AU Engelmann, SU
Bruce, RL
Nakamura, M
Metzler, D
Walton, SG
Joseph, EA
AF Engelmann, S. U.
Bruce, R. L.
Nakamura, M.
Metzler, D.
Walton, S. G.
Joseph, E. A.
TI Challenges of Tailoring Surface Chemistry and Plasma/Surface
Interactions to Advance Atomic Layer Etching
SO ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
LA English
DT Article
ID INDUCTIVELY-COUPLED PLASMA; HIGH-DENSITY-PLASMA; LOW-TEMPERATURE;
NEUTRAL BEAM; CU FILMS; SILICON; ION; IRRADIATION; DISCHARGES; MECHANISM
AB The ability to achieve atomic layer etch precision is reviewed in detail for a variety of material sets and implementation methods. For a cyclic approach most similar to a reverse ALD scheme, the process window to achieve a truly self-limited atomic layer etch (ALE) process is identified and the limitations as a function of controlling the adsorption step, the irradiation energy, and the reaction process are examined. Alternative approaches, namely processes to enable pseudo-ALE precision, are then introduced and results from their application investigated. Most of the recent work in plasma process development can be characterized by three fundamental approaches to atomic layer etching. Lastly, recent developments employing reactant flux control are briefly introduced, which have shown to provide a self-limited process that is able to exhibit high selectivity and pattern fidelity. The key feature of this novel method may be the ability to combine advances from the other atomic layer etch approaches. (C) The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email:oa@electrochem.org. All rights reserved.
C1 [Engelmann, S. U.; Bruce, R. L.; Metzler, D.; Joseph, E. A.] IBM Corp, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA.
[Nakamura, M.] ZEON Chem LP, Louisville, KY 40211 USA.
[Metzler, D.] Univ Maryland, College Pk, MD 20742 USA.
[Walton, S. G.] Naval Res Lab, Plasma Phys Div, Washington, DC 20375 USA.
RP Engelmann, SU (reprint author), IBM Corp, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA.
EM suengelm@us.ibm.com
RI Bruce, Robert/F-6548-2016
OI Bruce, Robert/0000-0002-5574-5603
FU Naval Research Laboratory Base Program; National Science Foundation
[CBET-1134273]
FX Special thanks go to B. Harrison, J.M. Papalia, S. Holmes, D. Farmer, K.
Uppireddi, E. Kamnang, G. Tulevski, D. Neumayer, A. Bol, E. Sikorski, P.
Bouvron, W. Price, Y. Zhang and N. Fuller. S. J. Han, J. Chang and Y.
Zhu are thanked for contributions to parts of this work. The authors
would also like to thank the MRL management for support of this work. S.
E. furthermore specifically thanks L. Lecordier and A. Pyzyna for
fruitful discussions and a close look into the world of ALD and PE-ALD.
This work was partially supported by the Naval Research Laboratory Base
Program. S. E., D.M. and E. A. J. gratefully acknowledge support by the
National Science Foundation for research under award CBET-1134273 which
led to part of the work described here, and also thank G. S. Oehrlein
who serves as PI of this award.
NR 73
TC 9
Z9 9
U1 4
U2 18
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 2015
VL 4
IS 6
BP N5054
EP N5060
DI 10.1149/2.0101506jss
PG 7
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA CI5GR
UT WOS:000354783100002
ER
PT J
AU Walton, SG
Boris, DR
Hernandez, SC
Lock, EH
Petrova, TB
Petrov, GM
Fernsler, RF
AF Walton, S. G.
Boris, D. R.
Hernandez, S. C.
Lock, E. H.
Petrova, Tz. B.
Petrov, G. M.
Fernsler, R. F.
TI Electron Beam Generated Plasmas for Ultra Low T-e Processing
SO ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
LA English
DT Article
ID SURFACE MODIFICATION; NEGATIVE-IONS; EXTRACTION; DEPOSITION; GRAPHENE;
SYSTEM; GAAS
AB The Naval Research Laboratory (NRL) has developed a processing system based on an electron beam-generated plasma. Unlike conventional discharges produced by electric fields (DC, RF, microwave, etc.), ionization is driven by a high-energy (similar to few keV) electron beam, an approach that can be attractive to atomic layer processing applications. In particular, high electron densities (10(10)-10(11) cm(-3)) can be produced in electron beam generated plasmas, where the electron temperature remains between 0.3 and 1.0 eV. Accordingly, a large flux of ions can be delivered to substrate surfaces with kinetic energies in the range of 1 to 5 eV. This provides the potential for controllably etching and/or engineering both the surface morphology and chemistry with monolayer precision. This work describes the electron beam driven plasma processing system, with particular attention paid to system characteristics and the ability to control the generation and delivery of ions to the surface and their energies. (C) The Author(s) 2015. 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 [Walton, S. G.; Boris, D. R.; Hernandez, S. C.; Petrova, Tz. B.; Petrov, G. M.] Naval Res Lab, Plasma Phys Div, Washington, DC 20375 USA.
[Lock, E. H.] Naval Res Lab, Mat Sci & Technol Div, Washington, DC 20375 USA.
[Fernsler, R. F.] Sotera Def Solut Inc, Annapolis Jct, MD 20701 USA.
RP Walton, SG (reprint author), Naval Res Lab, Plasma Phys Div, Washington, DC 20375 USA.
EM scott.walton@nrl.navy.mil
FU Naval Research Laboratory
FX This work was supported by the Naval Research Laboratory base program.
NR 58
TC 10
Z9 10
U1 3
U2 12
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 2015
VL 4
IS 6
BP N5033
EP N5040
DI 10.1149/2.0071506jss
PG 8
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA CI5GR
UT WOS:000354783100015
ER
PT J
AU Raghupathi, M
Wick, BD
AF Raghupathi, Mrinal
Wick, Brett D.
TI SOME REMARKS ABOUT INTERPOLATING SEQUENCES IN REPRODUCING KERNEL HILBERT
SPACES
SO HOUSTON JOURNAL OF MATHEMATICS
LA English
DT Article
DE Interpolating Sequences; Schur-Agler Class; Riemann Surfaces
ID ANALYTIC FUNCTIONS; THEOREM
AB In this paper we study two separate problems on interpolation. We first give some new equivalences of Stout's Theorem on necessary and sufficient conditions for a sequence of points to be an interpolating sequence on a finite open Riemann surface. We next turn our attention to the question of interpolation for reproducing kernel Hilbert spaces on the polydisc and provide a collection of equivalent statements about when it is possible to interpolation in the Schur-Agler class of the associated reproducing kernel Hilbert space.
C1 [Raghupathi, Mrinal] US Naval Acad, Dept Math, Annapolis, MD 21403 USA.
[Wick, Brett D.] Georgia Inst Technol, Sch Math, Atlanta, GA 30332 USA.
RP Raghupathi, M (reprint author), US Naval Acad, Dept Math, Annapolis, MD 21403 USA.
EM raghupat@usna.edu; wick@math.gatechedu
OI Wick, Brett/0000-0003-1890-0608
FU Office of Naval Research NARC grant; National Science Foundation DMS
[1001098, 0955432]
FX Research supported by the Office of Naval Research NARC grant.; Research
supported in part by a National Science Foundation DMS Grant # 1001098
and # 0955432.
NR 15
TC 0
Z9 0
U1 0
U2 0
PU UNIV HOUSTON
PI HOUSTON
PA DEPT MATH, HOUSTON, TX 77204 USA
SN 0362-1588
J9 HOUSTON J MATH
JI Houst. J. Math.
PY 2015
VL 41
IS 1
BP 213
EP 230
PG 18
WC Mathematics
SC Mathematics
GA CI5LZ
UT WOS:000354799300012
ER
PT S
AU Christophersen, M
Phlips, BF
Boudreau, AJ
Yetzbacher, MK
AF Christophersen, M.
Phlips, B. F.
Boudreau, A. J.
Yetzbacher, M. K.
BE Cain, JP
Sanchez, MI
TI Multiple Height Calibration Reference for Nano-Metrology
SO METROLOGY, INSPECTION, AND PROCESS CONTROL FOR MICROLITHOGRAPHY XXIX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT 29th Conference on Metrology, Inspection, and Process Control for
Microlithography
CY FEB 23-26, 2015
CL San Jose, CA
SP SPIE, NOVA Ltd
DE step height; scanning probe microscope; nano-metrology; calibration;
gray-tone lithography; atomic layer deposition
ID SURFACE
AB Modern nano-metrology instruments require calibration references with nanometer accuracy in the x, y, and z directions. A common problem is the accurate calibration in the z direction (height). For example, it is generally not difficult to obtain accurate x-and y-calibration references for a Scanning Probe Microscope (SPM). It is, however, much more difficult to obtain accurate z-axis results. It is difficult to control z-axis piezo dynamics because during scanning in the xy-plane the x-and y-axes move at a constant rate whiles the z axis does not. Furthermore due to the high cost of producing calibration standards, the microscope is often calibrated at only one height. However, if the relationship between the measured z height and the actual z height is not linear, then the height measurements will not be correct. In this paper, we will present a method for the fabrication of calibration references with: (i) sub-10 nm features and (ii) multiple step heights on one reference, allowing for better calibration of the non-linearity in the z direction.
C1 [Christophersen, M.; Phlips, B. F.; Boudreau, A. J.; Yetzbacher, M. K.] US Navy, Res Lab, Washington, DC 20375 USA.
RP Christophersen, M (reprint author), US Navy, Res Lab, 4555 Overlook Ave,SW, Washington, DC 20375 USA.
RI Christophersen, Marc/B-6795-2008
NR 9
TC 0
Z9 0
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-526-1
J9 PROC SPIE
PY 2015
VL 9424
AR 94240R
DI 10.1117/12.2085502
PG 11
WC Optics; Physics, Applied; Imaging Science & Photographic Technology
SC Optics; Physics; Imaging Science & Photographic Technology
GA BC6OK
UT WOS:000354250200026
ER
PT B
AU Clary, C
AF Clary, Christopher
BE Fair, CC
Watson, SJ
TI The Safety and Security of the Pakistani Nuclear Arsenal
SO PAKISTAN'S ENDURING CHALLENGES
LA English
DT Article; Book Chapter
ID FORCES; BOMB
C1 [Clary, Christopher] MIT, Dept Polit Sci, Cambridge, MA 02139 USA.
[Clary, Christopher] RAND Corp, Stanton Nucl Secur, Washington, DC USA.
[Clary, Christopher] Council Foreign Relat Int Affairs, New Delhi, India.
[Clary, Christopher] Naval Postgrad Sch, Monterey, CA USA.
[Clary, Christopher] Henry L Stimson Ctr, Washington, DC USA.
RP Clary, C (reprint author), MIT, Dept Polit Sci, Cambridge, MA 02139 USA.
NR 69
TC 0
Z9 0
U1 0
U2 0
PU UNIV PENNSYLVANIA PRESS
PI PHILADELPHIA
PA 3905 SPRUCE STREET, PHILADELPHIA, PA 19104 USA
BN 978-0-8122-4690-2
PY 2015
BP 98
EP 127
D2 10.9783/9780812290967
PG 30
WC Economics; Political Science
SC Business & Economics; Government & Law
GA BC4BK
UT WOS:000352243800005
ER
PT B
AU Jaskoski, M
AF Jaskoski, Maiah
BE Dunigan, M
Petersohn, U
TI The Military Protection Markets in Peru and Ecuador: A Detailed Analysis
SO MARKETS FOR FORCE: PRIVATIZATION OF SECURITY ACROSS WORLD REGIONS
LA English
DT Article; Book Chapter
ID COLOMBIA
C1 Naval Postgrad Sch, Dept Natl Secur Affairs, Monterey, CA 93943 USA.
RP Jaskoski, M (reprint author), Naval Postgrad Sch, Dept Natl Secur Affairs, Monterey, CA 93943 USA.
NR 27
TC 0
Z9 0
U1 0
U2 0
PU UNIV PENNSYLVANIA PRESS
PI PHILADELPHIA
PA 3905 SPRUCE STREET, PHILADELPHIA, PA 19104 USA
BN 978-0-8122-4686-5
PY 2015
BP 38
EP 51
PG 14
WC International Relations; Political Science
SC International Relations; Government & Law
GA BC3XN
UT WOS:000352036200004
ER
PT J
AU Nedoluha, GE
Siskind, DE
Lambert, A
Boone, C
AF Nedoluha, G. E.
Siskind, D. E.
Lambert, A.
Boone, C.
TI The decrease in mid-stratospheric tropical ozone since 1991
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID CHEMISTRY EXPERIMENT ACE; SAGE-II; TRENDS; MODEL; VARIABILITY;
CIRCULATION; VALIDATION; PROFILE; GASES; HALOE
AB While global stratospheric O-3 has begun to recover, there are localized regions where O-3 has decreased since 1991. Specifically, we use measurements from the Halogen Occultation Experiment (HALOE) for the period 1991-2005 and the NASA Aura Microwave Limb Sounder (MLS) for the period 2004-2013 to demonstrate a significant decrease in O-3 near similar to 10 hPa in the tropics. O-3 in this region is very sensitive to variations in NOy, and the observed decrease can be understood as a spatially localized, yet long-term increase in NOy. In turn, using data from MLS and from the Atmospheric Chemistry Experiment (ACE), we show that the NOy variations are caused by decreases in N2O which are likely linked to long-term variations in dynamics. To illustrate how variations in dynamics can affect N2O and O-3, we show that by decreasing the upwelling in the tropics, more of the N2O can photodissociate with a concomitant increase in NOy production (via N2O + O(D-1) -> 2NO) at 10 hPa. Ultimately, this can cause an O-3 decrease of the observed magnitude.
C1 [Nedoluha, G. E.; Siskind, D. E.] Naval Res Lab, Washington, DC 20375 USA.
[Lambert, A.] CALTECH, Jet Prop Lab, Pasadena, CA USA.
[Boone, C.] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada.
RP Nedoluha, GE (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM nedoluha@nrl.navy.mil
FU NASA under the Upper Atmosphere Research Program; Naval Research
Laboratory; Office of Naval Research
FX This project was funded by NASA under the Upper Atmosphere Research
Program, by the Naval Research Laboratory, and by the Office of Naval
Research. Work at the Jet Propulsion Laboratory, California Institute of
Technology, was carried out under a contract with the National
Aeronautics and Space Administration. MLS and HALOE data are available
from the NASA Goddard Earth Science Data Information and Services Center
(acdisc.gsfc.nasa.gov). ACE-FTS data is available at
www.ace.uwaterloo.ca.
NR 32
TC 2
Z9 2
U1 0
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 2015
VL 15
IS 8
BP 4215
EP 4224
DI 10.5194/acp-15-4215-2015
PG 10
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CH2EH
UT WOS:000353838000015
ER
PT S
AU Breger, J
Delehanty, JB
Gemmill, KB
Field, LD
Blanco-Canosa, JB
Dawson, PE
Huston, AL
Medintz, IL
AF Breger, Joyce
Delehanty, James B.
Gemmill, Kelly Boeneman
Field, Lauren D.
Blanco-Canosa, Juan B.
Dawson, Philip E.
Huston, Alan L.
Medintz, Igor L.
BE Parak, WJ
Osinski, M
Liang, XJ
TI Membrane-Targeting Peptides for Nanoparticle-Facilitated Cellular
Imaging and Analysis
SO COLLOIDAL NANOPARTICLES FOR BIOMEDICAL APPLICATIONS X
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Colloidal Nanoparticles for Biomedical Applications X
CY FEB 07-09, 2015
CL San Francisco, CA
SP SPIE, Ocean Opt Inc
DE nanoassemblies; cell-penetrating peptide; quantum dot; controlled
release; fluorescence
ID INTRACELLULAR DELIVERY
AB The controlled delivery of nanomaterials to the plasma membrane is critical for the development of nanoscale probes that can eventually enable cellular imaging and analysis of membrane processes. Chief among the requisite criteria are delivery/targeting modalities that result in the long-term residence (e.g., days) of the nanoparticles on the plasma membrane while simultaneously not interfering with regular cellular physiology and homeostasis. Our laboratory has developed a suite of peptidyl motifs that target semiconductor nanocrystals (quantum dots (QDs)) to the plasma membrane where they remain resident for up to three days. Notably, only small a percentage of the QDs are endocytosed over this time course and cellular viability is maintained. This talk will highlight the utility of these peptide-QD constructs for cellular imaging and analysis.
C1 [Breger, Joyce; Delehanty, James B.; Gemmill, Kelly Boeneman; Field, Lauren D.; Medintz, Igor L.] US Naval Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
[Blanco-Canosa, Juan B.; Dawson, Philip E.] Scripps Res Inst, Dept Chem, La Jolla, CA 92037 USA.
[Huston, Alan L.] US Naval Res Lab, Div Opt Sci, Washington, DC 20375 USA.
RP Breger, J (reprint author), US Naval Res Lab, Ctr Biomol Sci & Engn, 4555 Overlook Ave SW, Washington, DC 20375 USA.
NR 7
TC 0
Z9 0
U1 0
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-428-8
J9 PROC SPIE
PY 2015
VL 9338
AR 93381P
DI 10.1117/12.2077026
PG 4
WC Engineering, Biomedical; Nanoscience & Nanotechnology; Optics
SC Engineering; Science & Technology - Other Topics; Optics
GA BC6NI
UT WOS:000354173600026
ER
PT S
AU DeVore, MS
Stich, DG
Keller, AM
Ghosh, Y
Goodwin, PM
Phipps, ME
Stewart, MH
Cleyrat, C
Wilson, BS
Lidke, DS
Hollingsworth, JA
Werner, JH
AF DeVore, Matthew S.
Stich, Dominik G.
Keller, Aaron M.
Ghosh, Yagnaseni
Goodwin, Peter M.
Phipps, Mary E.
Stewart, Michael H.
Cleyrat, Cedric
Wilson, Bridget S.
Lidke, Diane S.
Hollingsworth, Jennifer A.
Werner, James H.
BE Parak, WJ
Osinski, M
Liang, XJ
TI Three dimensional time-gated tracking of non-blinking quantum dots in
live cells
SO COLLOIDAL NANOPARTICLES FOR BIOMEDICAL APPLICATIONS X
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Colloidal Nanoparticles for Biomedical Applications X
CY FEB 07-09, 2015
CL San Francisco, CA
SP SPIE, Ocean Opt Inc
DE Single particle tracking; time-gating; quantum dot; microscopy
ID SINGLE-PARTICLE TRACKING; SHELL-THICKNESS; 3 DIMENSIONS; NANOCRYSTALS;
FLUORESCENCE; DYNAMICS; PHOTOLUMINESCENCE; SUPPRESSION; PRECISION;
MEMBRANE
AB Single particle tracking has provided a wealth of information about biophysical processes such as motor protein transport and diffusion in cell membranes. However, motion out of the plane of the microscope or blinking of the fluorescent probe used as a label generally limits observation times to several seconds. Here, we overcome these limitations by using novel non-blinking quantum dots as probes and employing a custom 3D tracking microscope to actively follow motion in three dimensions (3D) in live cells. Signal-to-noise is improved in the cellular milieu through the use of pulsed excitation and time-gated detection.
C1 [DeVore, Matthew S.; Stich, Dominik G.; Keller, Aaron M.; Ghosh, Yagnaseni; Goodwin, Peter M.; Phipps, Mary E.; Hollingsworth, Jennifer A.; Werner, James H.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
[Stewart, Michael H.] US Naval Res Lab, Div Opt Sci, Washington, DC 20375 USA.
[Cleyrat, Cedric; Wilson, Bridget S.; Lidke, Diane S.] Univ New Mexico, Dept Pathol, Albuquerque, NM 87131 USA.
[Cleyrat, Cedric; Wilson, Bridget S.; Lidke, Diane S.] Univ New Mexico, Canc Res & Treatment Ctr, Albuquerque, NM 87131 USA.
RP DeVore, MS (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87545 USA.
RI Cleyrat, Cedric/F-1824-2016
OI Cleyrat, Cedric/0000-0002-1928-6497
NR 54
TC 1
Z9 1
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-428-8
J9 PROC SPIE
PY 2015
VL 9338
AR 933812
DI 10.1117/12.2082943
PG 15
WC Engineering, Biomedical; Nanoscience & Nanotechnology; Optics
SC Engineering; Science & Technology - Other Topics; Optics
GA BC6NI
UT WOS:000354173600014
ER
PT J
AU Young, G
Jian, GQ
Jacob, R
Zachariah, MR
AF Young, Gregory
Jian, Guoqiang
Jacob, Rohit
Zachariah, Michael R.
TI DECOMPOSITION AND IGNITION CHARACTERISTICS OF TITANIUM HYDRIDE AT HIGH
HEATING RATES
SO COMBUSTION SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Decomposition; Ignition; TiH2; Titanium hydride
ID OXIDATION PROCESS; COMBUSTION; HYDROGEN; BEHAVIOR; AIR; GENERATION;
PARTICLES; ALUMINUM; STORAGE; POWDER
AB An experimental study was conducted to evaluate the decomposition, ignition, and combustion behavior of titanium hydride under high heating rate conditions. Samples were deposited on filaments, which were rapidly heated by joule heating under various conditions. Dehydrogenation experiments were conducted under vacuum conditions at heating rates of up to 4 x 10(5) K/s. The results of these experiments suggest that, at high heating rates, the onset of dehydrogenation is limited by intraparticle diffusion. The ignition and combustion behavior was studied in air and for ambient pressures ranging from atmospheric up to 7 MPa in a windowed pressure vessel. Broadband light emission was used to quantify the ignition temperature. The experiments revealed that the ignition temperature decreased linearly with increasing pressure from approximately 1700 K to 1475 K. Comparison of the dehydrogenation temperatures to the ignition temperatures over the entire pressure range suggests that the onset of the dehydrogenation process is not likely to be affected by ambient pressure. Finally, observation of the steady state combustion process by high speed imaging and post mortem analysis revealed many similar combustion characteristics to pure titanium. Particle explosions were observed and quenched particles were found to consist of titanium, nitrogen, and oxygen.
C1 [Young, Gregory] Naval Surface Warfare Ctr, Indian Head Div, RDT&E Dept, Indian Head, MD 20640 USA.
[Jian, Guoqiang; Jacob, Rohit; Zachariah, Michael R.] Univ Maryland, College Pk, MD 20742 USA.
RP Young, G (reprint author), Naval Surface Warfare Ctr, Indian Head Div, RDT&E Dept, Indian Head, MD 20640 USA.
EM gregory.young1@navy.mil
FU Naval Surface Warfare Center-Indian Head Division (NSWC-IHD); Army
Research Office
FX This research effort was supported through the ILIR program at the Naval
Surface Warfare Center-Indian Head Division (NSWC-IHD) and from the Army
Research Office. The authors would specifically like to thank Dr. Al
Stern.
NR 28
TC 0
Z9 0
U1 3
U2 10
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0010-2202
EI 1563-521X
J9 COMBUST SCI TECHNOL
JI Combust. Sci. Technol.
PY 2015
VL 187
IS 8
BP 1182
EP 1194
DI 10.1080/00102202.2015.1019619
PG 13
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical
SC Thermodynamics; Energy & Fuels; Engineering
GA CH8VA
UT WOS:000354313000003
ER
PT S
AU Friebele, EJ
Baker, CC
Askins, CG
Fontana, JP
Hunt, MP
Peele, JR
Marcheschi, BA
Oh, E
Kim, W
Sanghera, J
Zhang, J
Pattnaik, RK
Merkle, LD
Dubinskii, M
AF Friebele, E. Joseph
Baker, Colin C.
Askins, Charles G.
Fontana, Jake P.
Hunt, Michael P.
Peele, John R.
Marcheschi, Barbara A.
Oh, Eunkeu
Kim, Woohong
Sanghera, Jasbinder
Zhang, Jun
Pattnaik, Radha K.
Merkle, Larry D.
Dubinskii, Mark
BE Shaw, LB
Ballato, J
TI Erbium nanoparticle doped fibers for efficient, resonantly-pumped
Er-doped fiber lasers
SO FIBER LASERS XII: TECHNOLOGY, SYSTEMS, AND APPLICATIONS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Fiber Lasers XII - Technology, Systems, and Applications
CY FEB 09-12, 2015
CL San Francisco, CA
SP SPIE, NKT Photon A S, PolarOnyx Inc
DE Erbium doped fiber; nanoparticles; high energy lasers; fiber lasers
ID SIZE; BOEHMITE; SHAPE
AB Nanoparticle (NP) doping is a new technique for making erbium-doped fibers (EDFs); the Er ions are surrounded by a cage of aluminum and oxygen ions, substantially reducing Er3+ ion-ion energy exchange and its deleterious effects on laser performance. Er-Al-doped NPs have been synthesized and doped in-situ into the silica soot of the preform core. We report the first known measurements of NP-doped EDFs in a resonantly-core pumped master oscillator-power amplifier (MOPA) configuration; the optical-to-optical slope efficiency was 80.4%, which we believe is a record for this type of fiber.
C1 [Friebele, E. Joseph; Baker, Colin C.; Askins, Charles G.; Fontana, Jake P.; Marcheschi, Barbara A.; Kim, Woohong; Sanghera, Jasbinder] Naval Res Lab, Washington, DC 20375 USA.
[Hunt, Michael P.] Univ Res Fdn, Greenbelt, MD 20770 USA.
[Peele, John R.; Oh, Eunkeu] Sotera Def Syst, Columbia, MD 21046 USA.
[Zhang, Jun; Pattnaik, Radha K.; Merkle, Larry D.; Dubinskii, Mark] Army Res Lab, Ade Iphi, MD 20783 USA.
RP Friebele, EJ (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM joe.friebele@ndnavy.mil
RI Baker, Colin/I-6657-2015
NR 11
TC 1
Z9 1
U1 0
U2 9
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-434-9
J9 PROC SPIE
PY 2015
VL 9344
AR 934412
DI 10.1117/12.2079443
PG 8
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BC6EZ
UT WOS:000353887400025
ER
PT S
AU Mathews, SA
Charipar, NA
Auyeung, RCY
Kim, H
Pique, A
AF Mathews, Scott A.
Charipar, Nicholas A.
Auyeung, Ray C. Y.
Kim, Heungsoo
Pique, Alberto
BE Klotzbach, U
Washio, K
Arnold, CB
TI Laser Forward Transfer of Solder Paste for Microelectronics Fabrication
SO LASER-BASED MICRO- AND NANOPROCESSING IX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Laser-Based Micro- and Nanoprocessing IX
CY FEB 10-12, 2015
CL San Francisco, CA
SP SPIE
DE Additive Manufacturing; Laser Direct-Write; Laser-induced forward
transfer (LIFT); Printing of solder pastes
ID PRINTING TECHNOLOGY; LIGHT
AB The progressive miniaturization of electronic devices requires an ever-increasing density of interconnects attached via solder joints. As a consequence, the overall size and spacing (or pitch) of these solder joint interconnects keeps shrinking. When the pitch between interconnects decreases below 200 pm, current technologies, such as stencil printing, find themselves reaching their resolution limit. Laser direct-write (LDW) techniques based on laser-induced forward transfer (LIFT) of functional materials offer unique advantages and capabilities for the printing of solder pastes. At NRL, we have demonstrated the successful transfer, patterning, and subsequent reflow of commercial Pb-free solder pastes using LIFT. Transfers were achieved both with the donor substrate in contact with the receiving substrate and across a 25 mu m gap, such that the donor substrate does not make contact with the receiving substrate. We demonstrate the transfer of solder paste features down to 25 mu m in diameter and as large as a few hundred microns, although neither represents the ultimate limit of the LIFT process in terms of spatial dimensions. Solder paste was transferred onto circular copper pads as small as 30 pm and subsequently reflowed, in order to demonstrate that the solder and flux were not adversely affected by the LIFT process.
C1 [Mathews, Scott A.; Charipar, Nicholas A.; Auyeung, Ray C. Y.; Kim, Heungsoo; Pique, Alberto] Naval Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
RP Mathews, SA (reprint author), Naval Res Lab, Div Mat Sci & Technol, Code 6364, Washington, DC 20375 USA.
EM scott.mathews@nrl.navy.mil
NR 12
TC 2
Z9 2
U1 1
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-441-7
J9 PROC SPIE
PY 2015
VL 9351
AR 93510Y
DI 10.1117/12.2080410
PG 9
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BC6NM
UT WOS:000354184400021
ER
PT J
AU Samanta, A
Walper, SA
Susumu, K
Dwyer, CL
Medintz, IL
AF Samanta, Anirban
Walper, Scott A.
Susumu, Kimihiro
Dwyer, Chris L.
Medintz, Igor L.
TI An enzymatically-sensitized sequential and concentric energy transfer
relay self-assembled around semiconductor quantum dots
SO NANOSCALE
LA English
DT Article
ID PROTEOLYTIC ACTIVITY; PROTEASE ACTIVITY; FLUORESCENT PROTEIN; FIREFLY
LUCIFERASE; NANOPARTICLES; DELIVERY; SURFACE; LOGIC; BIOCONJUGATION;
ACCELERATION
AB The ability to control light energy within de novo nanoscale structures and devices will greatly benefit their continuing development and ultimate application. Ideally, this control should extend from generating the light itself to its spatial propagation within the device along with providing defined emission wavelength (s), all in a stand-alone modality. Here we design and characterize macromolecular nanoassemblies consisting of semiconductor quantum dots (QDs), several differentially dye-labeled peptides and the enzyme luciferase which cumulatively demonstrate many of these capabilities by engaging in multiple-sequential energy transfer steps. To create these structures, recombinantly-expressed luciferase and the dye-labeled peptides were appended with a terminal polyhistidine sequence allowing for controlled ratio-metric self-assembly around the QDs via metal-affinity coordination. The QDs serve to provide multiple roles in these structures including as central assembly platforms or nanoscaffolds along with acting as a potent energy harvesting and transfer relay. The devices are activated by addition of coelenterazine H substrate which is oxidized by luciferase producing light energy which sensitizes the central 625 nm emitting QD acceptor by bioluminescence resonance energy transfer (BRET). The sensitized QD, in turn, acts as a relay and transfers the energy to a first peptide-labeled Alexa Fluor 647 acceptor dye displayed on its surface. This dye then transfers energy to a second red-shifted peptide-labeled dye acceptor on the QD surface through a second concentric Forster resonance energy transfer (FRET) process. Alexa Fluor 700 and Cy5.5 are both tested in the role of this terminal FRET acceptor. Photophysical analysis of spectral profiles from the resulting sequential BRET-FRET-FRET processes allow us to estimate the efficiency of each of the transfer steps. Importantly, the efficiency of each step within this energy transfer cascade can be controlled to some extent by the number of enzymes/peptides displayed on the QD. Further optimization of the energy transfer process(es) along with potential applications of such devices are finally discussed.
C1 [Samanta, Anirban; Walper, Scott A.; Medintz, Igor L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
[Samanta, Anirban] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA.
[Susumu, Kimihiro] US Naval Res Lab, Opt Sci Div, Washington, DC 20375 USA.
[Susumu, Kimihiro] Sotera Def Solut, Columbia, MD 21046 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.
EM igor.medintz@nrl.navy.mil
FU NRL; NRL NSI; DTRA JSTO MIPR [B112582M]
FX IM acknowledge financial support from NRL, the NRL NSI, and DTRA JSTO
MIPR no. B112582M. CD acknowledges the ONR Summer Faculty Program.
NR 62
TC 13
Z9 13
U1 8
U2 63
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 2015
VL 7
IS 17
BP 7603
EP 7614
DI 10.1039/c5nr00828j
PG 12
WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials
Science, Multidisciplinary; Physics, Applied
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CH4DI
UT WOS:000353981700015
PM 25804284
ER
PT S
AU Taylor, CD
Major, KJ
Joshi, R
Busse, LE
Frantz, J
Sanghera, JS
Aggarwal, ID
Poutous, MK
AF Taylor, C. D.
Major, K. J.
Joshi, R.
Busse, L. E.
Frantz, J.
Sanghera, J. S.
Aggarwal, I. D.
Poutous, M. K.
BE Jiang, S
Digonnet, MJF
TI Optical performance of random anti-reflection structures on curved
surfaces
SO OPTICAL COMPONENTS AND MATERIALS XII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Optical Components and Materials XII
CY FEB 09-11, 2015
CL San Francisco, CA
SP SPIE
DE random anti-reflection surfaces; anti-reflection coated lenses; fused
silica; optical lenses
ID LENSES
AB Random anti-reflection structured surfaces (rARSS) have been reported to improve transmittance of optical-grade fused silica planar substrates to values greater than 99%. These textures are achieved using reactive-ion etching techniques and often result in transmitted spectra with no measurable interference effects (fringes) for a wide range of wavelengths. The inductively-coupled reactive ion plasma (ICP-RIE) used in the fabrication process to etch the rARSS is anisotropic, and thus well-suited for planar components. The improvement in spectral transmission has been found to be independent of optical incidence angles, for values from 0 degrees to +/- 30 degrees. Qualifying and quantifying the rARSS performance on curved substrates, such as concave and convex lenses, is required to optimize the fabrication of a desirable AR effect on optical-power elements. In this work, rARSS was fabricated on fused silica plano-convex and plano-concave lenses, using an optimized ICP-RIE process, to maximize optical transmission in the range from 500 nm to 1100 nm. Results are presented from optical transmission tests of matched sets of varying curvature lenses with rARSS at a wavelength of 633nm. The transmission was measured as a function of radial distance from the apex of each lens, and shows the anisotropic dependence of the etch process. The transmittance profiles between the different sphericity of the tested lenses as well as the matched sets of concave and convex surfaces are compared. The measured angle-of-incidence dependence of planar silica versus silica lenses with rARSS is also presented.
C1 [Taylor, C. D.; Major, K. J.; Joshi, R.; Poutous, M. K.] Univ N Carolina, Dept Phys & Opt Sci, Charlotte, NC 28223 USA.
[Busse, L. E.; Frantz, J.; Sanghera, J. S.] Naval Res Lab, Washington, DC 20375 USA.
[Aggarwal, I. D.] Sotera Def Solut, Herndon, VA 20171 USA.
RP Taylor, CD (reprint author), Univ N Carolina, Dept Phys & Opt Sci, Charlotte, NC 28223 USA.
NR 5
TC 1
Z9 1
U1 4
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 978-1-62841-449-3
J9 PROC SPIE
PY 2015
VL 9359
AR 935916
DI 10.1117/12.2076791
PG 8
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA BC6OT
UT WOS:000354268500025
ER
PT S
AU Rabinovich, WS
Mahon, R
Goetz, PG
Pruessner, M
Ferraro, MS
Park, D
Fleet, E
DePrenger, MJ
AF Rabinovich, William S.
Mahon, Rita
Goetz, Peter G.
Pruessner, Marcel
Ferraro, Mike S.
Park, Doe
Fleet, Erin
DePrenger, Michael J.
BE Reed, GT
Watts, MR
TI Interferometric microscopy of silicon photonic devices
SO SILICON PHOTONICS X
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Silicon Photonics X
CY FEB 09-12, 2015
CL San Francisco, CA
SP SPIE
DE silicon photonics; holography; interferometry; multimode; coherence
ID OPTICAL PHASED-ARRAY; ON-INSULATOR
AB Silicon photonics provides the ability to construct complex photonic circuits that act on the amplitude and phase of multiple optical channels. Many applications of silicon photonics depend on maintenance of optical coherence among the various waveguides and structures on the chip. Other applications can depend on the modal structures of the waveguides. All these application require the ability to characterize the amplitude and phase of individual optical channels. Fourier imaging with high numerical aperture microscope objectives has been used to image the intensity of individual channels of photonic structures in both real and Fourier space. In other work, holographic imaging of multimode fibers has allowed modal decomposition. In this work we use interferometric microscopy to image the amplitude and phase of a variety of silicon photonic structures. These include a multimode interference splitter and a multimode waveguide under various excitation conditions.
C1 [Rabinovich, William S.; Mahon, Rita; Goetz, Peter G.; Pruessner, Marcel; Ferraro, Mike S.; Park, Doe; Fleet, Erin] US Navy, Res Lab, Washington, DC 20375 USA.
[DePrenger, Michael J.] Tekla, Dumfries, VA 22025 USA.
RP Rabinovich, WS (reprint author), US Navy, Res Lab, Washington, DC 20375 USA.
NR 5
TC 2
Z9 2
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-457-8
J9 PROC SPIE
PY 2015
VL 9367
AR 93670O
DI 10.1117/12.2077267
PG 4
WC Optics; Physics, Applied
SC Optics; Physics
GA BC6QD
UT WOS:000354373600018
ER
PT S
AU Restaino, SR
Hou, W
Kanaev, A
Matt, S
Font, C
AF Restaino, S. R.
Hou, W.
Kanaev, A.
Matt, S.
Font, C.
BE Bifano, TG
Kubby, J
Gigan, S
TI Wavefront Sensing and Analysis for Underwater Laser Propagation
SO ADAPTIVE OPTICS AND WAVEFRONT CONTROL FOR BIOLOGICAL SYSTEMS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive Optics and Wavefront Control for Biological
Systems
CY FEB 07-09, 2015
CL San Francisco, CA
SP SPIE
AB The use of Adaptive Optics (AO) to correct for aberrations in a wavefront of propagating light has become customary for Astronomical applications and is now expanding to many other areas going from medical imaging to industrial applications. However, the propagation of light underwater has remained out of the main stream AO community for a variety of reasons, not least the shear difficulty of the situation. Our group has become a program that attempts to define under which circumstances such a correction could be envisioned. We take advantage of the NRL laboratory facility in Stennis, MS, where a large Plexiglas tank of water is equipped with heating and cooling plates that allow for a well measured thermal gradient that in turn generates different degrees of turbulence that can distort a propagating laser beam. In this paper we report on the preliminary findings of this ongoing program. The paper will describe the facility and the AO test-bed, the measurements made and some of the preliminary result.
C1 US Navy, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Hou, W.; Matt, S.] US Navy, Res Lab, Div Oceanog, Washington, DC 20375 USA.
[Kanaev, A.] US Navy, Res Lab, Opt Sci Div, Washington, DC 20375 USA.
[Font, C.] US Navy, Res Lab, Div Informat Technol, Washington, DC 20375 USA.
RP Restaino, SR (reprint author), US Navy, Res Lab, Remote Sensing Div, Code 7210,4555 Overlook Ave SW, Washington, DC 20375 USA.
NR 5
TC 0
Z9 0
U1 1
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-425-7
J9 PROC SPIE
PY 2015
VL 9335
AR 93350G
DI 10.1117/12.2082716
PG 5
WC Microscopy; Optics; Radiology, Nuclear Medicine & Medical Imaging
SC Microscopy; Optics; Radiology, Nuclear Medicine & Medical Imaging
GA BC6FG
UT WOS:000353891900008
ER
PT S
AU Rabinovich, WS
Goetz, PG
Pruessner, M
Mahon, R
Ferraro, MS
Park, D
Fleet, E
DePrenger, MJ
AF Rabinovich, William S.
Goetz, Peter G.
Pruessner, Marcel
Mahon, Rita
Ferraro, Mike S.
Park, Doe
Fleet, Erin
DePrenger, Michael J.
BE Hemmati, H
Boroson, DM
TI Free space optical communication link using a silicon photonic optical
phased array
SO FREE-SPACE LASER COMMUNICATION AND ATMOSPHERIC PROPAGATION XXVII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Free-Space Laser Communication and Atmospheric Propagation
XXVII
CY FEB 08-09, 2015
CL San Francisco, CA
SP SPIE
DE free space optical communication; silicon photonics; optical phased
array; non-mechanical beam steering
AB Many components for free space optical communication systems have shrunken in size over the last decade. However, the steering systems have remained large and power hungry. Non-mechanical beam steering offers a path to reducing the size of these systems. Optical phased arrays can allow integrated beam steering elements. One of the most important aspects of an optical phased array technology is its scalability to a large number of elements. Silicon photonics can potentially offer this scalability using CMOS foundry techniques. In this paper a small-scale silicon photonic optical phased array is demonstrated for both the transmitter and receiver functions in a free space optical link. The device using an array of thermo-optically controlled waveguide phase shifters and demonstrates one-dimensional steering with a single control electrode. Transmission of a digitized video data stream over the link is shown.
C1 [Rabinovich, William S.; Goetz, Peter G.; Pruessner, Marcel; Ferraro, Mike S.; Park, Doe; Fleet, Erin] US Navy, Res Lab, Washington, DC 20375 USA.
[DePrenger, Michael J.] Tekla, Dumfries, VA 22025 USA.
RP Rabinovich, WS (reprint author), US Navy, Res Lab, Washington, DC 20375 USA.
NR 7
TC 3
Z9 3
U1 1
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-444-8
J9 PROC SPIE
PY 2015
VL 9354
AR 93540B
DI 10.1117/12.2077222
PG 6
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BC6AR
UT WOS:000353710100009
ER
PT S
AU Wilcox, C
Fernandez, B
Bagnasco, J
Martinez, T
Romeo, R
Agrawal, B
AF Wilcox, Christopher
Fernandez, Bautista
Bagnasco, John
Martinez, Ty
Romeo, Robert
Agrawal, Brij
BE Hemmati, H
Boroson, DM
TI The meter-class carbon fiber reinforced polymer mirror and segmented
mirror telescope at the Naval Postgraduate School
SO FREE-SPACE LASER COMMUNICATION AND ATMOSPHERIC PROPAGATION XXVII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Free-Space Laser Communication and Atmospheric Propagation
XXVII
CY FEB 08-09, 2015
CL San Francisco, CA
SP SPIE
AB The Adaptive Optics Center of Excellence for National Security at the Naval Postgraduate School has implemented a technology testing platform and array of facilities for next-generation space-based telescopes and imaging system development. The Segmented Mirror Telescope is a 3-meter, 6 segment telescope with actuators on its mirrors for system optical correction. Currently, investigation is being conducted in the use of lightweight carbon fiber reinforced polymer structures for large monolithic optics. Advantages of this material include lower manufacturing costs, very low weight, and high durability and survivability compared to its glass counterparts. Design and testing has begun on a 1-meter, optical quality CFRP parabolic mirror for the purpose of injecting collimated laser light through the SMT primary and secondary mirrors as well as the following aft optics that include wavefront sensors and deformable mirrors. This paper will present the design, testing, and usage of this CFRP parabolic mirror and the current path moving forward with this ever-evolving technology.
C1 [Wilcox, Christopher; Martinez, Ty] US Naval Res Lab, Washington, DC 20375 USA.
[Fernandez, Bautista; Bagnasco, John; Agrawal, Brij] US Naval Postgrad Sch, Monterey, CA USA.
[Romeo, Robert] Composite Mirror Applicat Inc, Tucson, AZ USA.
RP Wilcox, C (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
EM chris.wilcox@nrl.navy.mil
NR 5
TC 0
Z9 0
U1 1
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-444-8
J9 PROC SPIE
PY 2015
VL 9354
AR 93540J
DI 10.1117/12.2082628
PG 8
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BC6AR
UT WOS:000353710100015
ER
PT J
AU Duffin, AM
Springer, KW
Ward, JD
Jarman, KD
Robinson, JW
Endres, MC
Hart, GL
Gonzalez, JJ
Oropeza, D
Russo, RE
Willingham, DG
Naes, BE
Fahey, AJ
Eiden, GC
AF Duffin, Andrew M.
Springer, Kellen W.
Ward, Jesse D.
Jarman, Kenneth D.
Robinson, John W.
Endres, Mackenzie C.
Hart, Garret L.
Gonzalez, Jhanis J.
Oropeza, Dayana
Russo, Richard E.
Willingham, David G.
Naes, Benjamin E.
Fahey, Albert J.
Eiden, Gregory C.
TI Femtosecond laser ablation multicollector ICPMS analysis of uranium
isotopes in NIST glass
SO JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
LA English
DT Article
ID PLASMA-MASS SPECTROMETRY; TRANSPORT EFFICIENCIES; REFERENCE VALUES;
MC-ICPMS; MS; PARTICLES; PLUTONIUM; RESOLUTION; AEROSOLS; STANDARD
AB We utilized femtosecond laser ablation together with multi-collector inductively coupled plasma mass spectrometry to measure the uranium isotopic content of NIST 61x (x = 0, 2, 4, 6) glasses. The uranium content of these glasses is a linear two-component mixing between isotopically natural uranium and the isotopically depleted spike used in preparing the glasses. Laser ablation results match extremely well, generally within a few ppm, with solution analysis following sample dissolution and chemical separation. In addition to isotopic data, sample utilization efficiency measurements indicate that over 1% of ablated uranium atoms reach a mass spectrometer detector, making this technique extremely efficient. Laser sampling also allows for spatial analysis and our data indicate that rare uranium concentration inhomogeneities exist in NIST 616 glass.
C1 [Duffin, Andrew M.; Springer, Kellen W.; Ward, Jesse D.; Jarman, Kenneth D.; Robinson, John W.; Endres, Mackenzie C.; Hart, Garret L.; Willingham, David G.; Naes, Benjamin E.; Eiden, Gregory C.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Gonzalez, Jhanis J.; Oropeza, Dayana; Russo, Richard E.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Fahey, Albert J.] Naval Res Lab, Washington Dc, DC USA.
RP Eiden, GC (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM gregory.eiden@pnnl.gov
RI Fahey, Albert/C-5611-2015; Jarman, Kenneth/B-6157-2011;
OI Jarman, Kenneth/0000-0002-4396-9212; Willingham,
David/0000-0002-7166-8994
FU National Nuclear Security Administration, Office of Defense Nuclear
Nonproliferation Research and Development [DNN-RD/NA-22]; U.S.
Department of Energy (DOE) [DE-AC05-75RLO1830]; Chemical Science
Division, Office of Basic Energy Sciences; Defense Nuclear
Nonproliferation Research and Development Office of the U.S. DOE at the
Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]
FX The National Nuclear Security Administration, Office of Defense Nuclear
Nonproliferation Research and Development, DNN-RD/NA-22, supported this
work under an Interagency Agreement with the U.S. Department of Energy
(DOE) under Contract DE-AC05-75RLO1830. Part of this work was supported
by the Chemical Science Division, Office of Basic Energy Sciences and
the Defense Nuclear Nonproliferation Research and Development Office of
the U.S. DOE under contract number DE-AC02-05CH11231 at the Lawrence
Berkeley National Laboratory.
NR 36
TC 4
Z9 5
U1 6
U2 26
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 0267-9477
EI 1364-5544
J9 J ANAL ATOM SPECTROM
JI J. Anal. At. Spectrom.
PY 2015
VL 30
IS 5
BP 1100
EP 1107
DI 10.1039/c4ja00452c
PG 8
WC Chemistry, Analytical; Spectroscopy
SC Chemistry; Spectroscopy
GA CH1FW
UT WOS:000353767600010
ER
PT J
AU Zhang, JH
Parrish, DA
Shreeve, JM
AF Zhang, Jiaheng
Parrish, Damon A.
Shreeve, Jean'ne M.
TI Curious cases of 3,6-dinitropyrazolo[4,3-c]pyrazole-based energetic
cocrystals with high nitrogen content: an alternative to salt formation
SO CHEMICAL COMMUNICATIONS
LA English
DT Article
ID CO-CRYSTALS; PI-STACKING; PERFORMANCE; STABILITY; DESIGN; CL-20
AB Two structurally interesting 3,6-dinitropyrazolo[4,3-c] pyrazole-based energetic cocrystals were prepared and confirmed by single crystal X-ray diffraction. As novel energetic materials, these two unusual neutral acid-base complexes possess high nitrogen content, good detonation properties, and improved impact and friction sensitivities which highlight their potential energetic applications.
C1 [Zhang, Jiaheng; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA.
[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
FU ONR [NOOO14-12-1-0536]
FX The authors gratefully acknowledge the support of ONR
(NOOO14-12-1-0536). We are indebted to Dr Thao T. Vo and Dr Orion
Berryman for considerable assistance with crystal structure analysis
(NSF CHE-1337908).
NR 33
TC 6
Z9 6
U1 1
U2 24
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 1359-7345
EI 1364-548X
J9 CHEM COMMUN
JI Chem. Commun.
PY 2015
VL 51
IS 34
BP 7337
EP 7340
DI 10.1039/c5cc01745a
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA CG0RC
UT WOS:000352973400014
PM 25820478
ER
PT S
AU Keuthan, LM
Harrington, RJ
Willey, JM
AF Keuthan, Lynn M.
Harrington, Robert J.
Willey, Jefferson M.
BE Bouman, CA
Sauer, KD
TI Image Reconstruction in the Presence of Non-Linear Mixtures Utilizing
Wavelet Variable-Dependency Modeling in Compressed Sensing Algorithms
SO COMPUTATIONAL IMAGING XIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Computational Imaging XIII
CY FEB 10-11, 2015
CL San Francisco, CA
SP Soc Imaging Sci & Technol, SPIE
DE Compressed sensing; directional wavelet transforms; overcomplete tight
frame; bivariate shrinkage; Gaussian-scale mixtures
ID SIGNAL RECOVERY; SCALE MIXTURES; MINIMIZATION; SUBSPACES; GAUSSIANS;
SPARSITY; UNION
AB In Compressed Sensing (CS) Theory sparse signals can be reconstructed from far fewer measurements than the Nyquist Sampling Limit. Initial Compressed Sensing algorithms implicitly assume that sparsity domain coefficients are independently distributed. Accounting for and exploiting statistical dependencies in sparse signals can improve recovery performance. Wavelets and their theoretical principles, and the structural statistical modeling of dependencies, are applied to improve feature optimization in the presence of non-linear mixtures.
Sparsifying Transforms, such as the Discrete Wavelet Transform (DWT), are used for spatial dependencies such as in natural images. This can exploit hierarchical structure and multiscale subbands of frequencies and orientation, exploiting dependencies across and within scales. Bayes Least Squares-Gaussian-scale Mixtures accurately describe statistical dependencies of wavelet coefficients in images, and, therefore, can be incorporated to address dependencies and improve performance. Sparsifying Transforms and Bayes Least Squares-Gaussian-scale Mixtures are incorporated to model and account for dependency characteristics during the coefficient-weight construction of Compressed Sensing algorithm iterations. The resulting accuracy and performance improvements of incorporating wavelets and their theoretical principles, and incorporating the structural and statistical modeling of dependencies, to account for variable-dependencies in image reconstruction algorithms are shown, both quantitatively and qualitatively.
C1 [Keuthan, Lynn M.; Harrington, Robert J.] George Washington Univ, Washington, DC 20052 USA.
[Willey, Jefferson M.] Naval Res Lab, Washington, DC 20375 USA.
RP Keuthan, LM (reprint author), George Washington Univ, Washington, DC 20052 USA.
NR 43
TC 0
Z9 0
U1 1
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-491-2
J9 PROC SPIE
PY 2015
VL 9401
AR 940103
DI 10.1117/12.2083488
PG 14
WC Engineering, Electrical & Electronic; Optics; Imaging Science &
Photographic Technology
SC Engineering; Optics; Imaging Science & Photographic Technology
GA BC5AJ
UT WOS:000353126600001
ER
PT S
AU Field, LD
Andrasfalvy, BK
Galinanes, GL
Huber, D
Barbic, M
Macklin, JJ
Susumu, K
Delehanty, JB
Huston, AL
Makara, JK
Medintz, IL
AF Field, Lauren D.
Andrasfalvy, Bertalan K.
Galinanes, Gregorio L.
Huber, Daniel
Barbic, Mladen
Macklin, John J.
Susumu, Kimihiro
Delehanty, James B.
Huston, Alan L.
Makara, Judit K.
Medintz, Igor L.
BE Hirschberg, H
Madsen, SJ
Jansen, ED
Luo, Q
Mohanty, SK
Thakor, NV
TI Visualization and Neuronal Cell Targeting During Electrophysiological
Recordings Facilitated by Quantum Dots
SO Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Optical Techniques in Neurosurgery, Neurophotonics, and
Optogenetics II
CY FEB 07-10, 2015
CL San Francisco, CA
SP SPIE, Plexon Inc
AB The simultaneous visualization, identification and targeting of neurons during patch clamp-mediated electrophysiological recordings is a basic technique in neuroscience, yet it is often complicated by the inability to visualize the pipette tip, particularly in deep brain tissue. Here we demonstrate a novel approach in which fluorescent quantum dot probes are used to coat pipettes prior to their use. The strong two-photon absorption cross sections of the quantum dots afford robust contrast at significantly deeper penetration depths than current methods allow. We demonstrate the utility of this technique in multiple recording formats both in vitro and in vivo where imaging of the pipettes is achieved at remarkable depths (up to 800 microns). Notably, minimal perturbation of cellular physiology is observed over the hours-long time course of neuronal recordings. We discuss our results within the context of the role that quantum dot nanoprobes may play in understanding neuronal cell physiology.
C1 [Andrasfalvy, Bertalan K.; Makara, Judit K.] Hungarian Acad Sci, Inst Expt Med, Lendulet Lab Neuronal Signaling, H-1083 Budapest, Hungary.
[Galinanes, Gregorio L.; Huber, Daniel] Univ Geneva, CMU, Dept Basic Neurosci, CH-1211 Geneva 4, Switzerland.
[Barbic, Mladen; Macklin, John J.] Howard Hughes Med Inst, Appl Phys & Instrumentat Grp, Ashburn, VA 20147 USA.
[Susumu, Kimihiro; Huston, Alan L.] US Naval Res Lab, Opt Sci Div, Washington, DC 20375 USA.
[Field, Lauren D.; Delehanty, James B.; Medintz, Igor L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
[Susumu, Kimihiro] Sotera Def Solut, Annapolis Jct, MD 20701 USA.
[Field, Lauren D.] Univ Maryland, Dept Bioengn, College Pk, MD 20742 USA.
RP Field, LD (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA.
NR 9
TC 0
Z9 0
U1 4
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 978-1-62841-395-3
J9 PROC SPIE
PY 2015
VL 9305
AR 93050Y
DI 10.1117/12.2076934
PG 6
WC Microscopy; Optics
SC Microscopy; Optics
GA BC5OE
UT WOS:000353410600015
ER
PT S
AU Carothers, MT
Ngo, HT
Rakvic, RN
Broussard, RP
AF Carothers, Matthew T.
Ngo, Hau T.
Rakvic, Ryan N.
Broussard, Randy P.
BE Kehtarnavaz, N
Carlsohn, MF
TI Iris Unwrapping Using the Bresenham Circle Algorithm for Real-Time Iris
Recognition
SO REAL-TIME IMAGE AND VIDEO PROCESSING 2015
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Real-Time Image and Video Processing
CY FEB 10, 2015
CL San Francisco, CA
SP Soc Imaging Sci & Technol, SPIE
DE Iris recognition system; pupil; limbic boundary; polar coordinate
transform; Bresenham Circle Algorithm; parallel architecture; FPGA;
template matrix
AB An efficient parallel architecture design for the iris unwrapping process in a real-time iris recognition system using the Bresenham Circle Algorithm is presented in this paper. Based on the characteristics of the model parameters this algorithm was chosen over the widely used polar conversion technique as the iris unwrapping model. The architecture design is parallelized to increase the throughput of the system and is suitable for processing an inputted image size of 320 x 240 pixels in real-time using Field Programmable Gate Array technology. Quartus software is used to implement, verify, and analyze the design's performance using the VHSIC Hardware Description Language. The system's predicted processing time is faster than the modern iris unwrapping technique used today*.
C1 [Carothers, Matthew T.; Ngo, Hau T.; Rakvic, Ryan N.] US Naval Acad, Elect & Comp Engn Dept, Annapolis, MD 21402 USA.
[Broussard, Randy P.] US Naval Acad, Weap & Syst Engn Dept, Annapolis, MD 21402 USA.
RP Carothers, MT (reprint author), US Naval Acad, Elect & Comp Engn Dept, Annapolis, MD 21402 USA.
EM m151026@usna.edu; ngo@usna.edu; rakvic@usna.edu; broussar@usna.edu
NR 23
TC 0
Z9 0
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-490-5
J9 PROC SPIE
PY 2015
VL 9400
AR 94000E
DI 10.1117/12.2079801
PG 11
WC Engineering, Electrical & Electronic; Optics; Imaging Science &
Photographic Technology
SC Engineering; Optics; Imaging Science & Photographic Technology
GA BC5AL
UT WOS:000353130100012
ER
PT J
AU Good, BL
Smith, K
Merrill, C
AF Good, Brandon L.
Smith, Kelsey
Merrill, Craig
TI Validation of C-Band Permittivity of Fresh Water using Periodic Jets
SO IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
LA English
DT Article
DE Focused beam; free space measurements; water permittivity
AB This letter presents the results of a free space experiment that validated the Meissner and Wentz model of fresh water permittivity at 13 degrees C in C-Band. The experiment consisted of creating a periodic water jet array inside a focused beam measurement system. The focused beam system measures the radio frequency (RF) response to a finite array of free flowing water jets. The results of the experiment are compared to a one-dimensional Rigorous Coupled-Wave Analysis (RCWA) prediction for infinitely periodic cylinders of water. The consistency between the measured and predicted values appears to validate the permittivity of fresh water at 13 degrees C in C-Band as predicted by the Meissner and Wentz model. This method for measuring and predicting the one-dimensional RCWA solver could be used to characterize properties of other liquids.
C1 [Good, Brandon L.; Smith, Kelsey; Merrill, Craig] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA.
RP Good, BL (reprint author), Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA.
EM brandon.good@navy.mil; kelsey.m.smith@navy.mil; craig.f.merrill@navy.mil
FU Carderock Division under the Naval Innovative Science and Engineering
(NISE) program
FX Manuscript received July 01, 2014; revised October 09, 2014; accepted
November 25, 2014. Date of publication December 18, 2014; date of
current version April 07, 2015. This work was funded by Carderock
Division under the Naval Innovative Science and Engineering (NISE)
program, managed by the NSWC Carderock Division Director of Research.
NR 9
TC 0
Z9 0
U1 1
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1536-1225
EI 1548-5757
J9 IEEE ANTENN WIREL PR
JI IEEE Antennas Wirel. Propag. Lett.
PY 2015
VL 14
BP 891
EP 894
DI 10.1109/LAWP.2014.2383836
PG 4
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA CF7MA
UT WOS:000352739400003
ER
PT J
AU Madhogaria, S
Baggenstoss, PM
Schikora, M
Koch, W
Cremers, D
AF Madhogaria, Satish
Baggenstoss, Paul M.
Schikora, Marek
Koch, Wolfgang
Cremers, Daniel
TI Car Detection by Fusion of HOG and Causal MRF
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID VEHICLE DETECTION; RECOGNITION; CLASSIFIERS; FEATURES
AB Detection of cars has a high variety of civil and military applications, e.g., transportation control, traffic monitoring, and surveillance. It forms an important aspect in the deployment of autonomous unmanned aerial systems in rescue or surveillance missions. In this paper, we present a two-stage algorithm for detecting automobiles in aerial digital images. In the first stage, a feature-based detection is performed, based on local histogram of oriented gradients and support vector machine classification. Next, a generative statistical model is used to generate a ranking for each patch. The ranking can be used as a measure of confidence or a threshold to eliminate those patches that are least likely to be an automobile. We analyze the results obtained from three different types of data sets. In various experiments, we present the performance improvement of this approach compared to a discriminative-only approach; the false alarm rate is reduced by a factor of 7 with only a 10% drop in the recall rate.
C1 [Madhogaria, Satish; Schikora, Marek; Koch, Wolfgang] Fraunhofer FKIE, Sensor Data & Fus, D-53343 Wachtberg, Germany.
[Baggenstoss, Paul M.] Naval Undersea Warfare Ctr, Newport, RI USA.
[Cremers, Daniel] Tech Univ Munich, Dept Comp Sci, D-85748 Garching, Germany.
RP Madhogaria, S (reprint author), Fraunhofer FKIE, Sensor Data & Fus, Fraunhofer Str 20, D-53343 Wachtberg, Germany.
EM satish.madhogaria@fkie.fraunhofer.de; paul.m.baggenstoss@ieee.org;
marek.schikora@fkie.fraunhofer.de; wolfgang.koch@fkie.fraunhofer.de;
daniel.cremer@in.tum.de
NR 27
TC 1
Z9 1
U1 3
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9251
EI 1557-9603
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD JAN
PY 2015
VL 51
IS 1
BP 575
EP 590
DI 10.1109/TAES.2014.120141
PG 16
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
Telecommunications
SC Engineering; Telecommunications
GA CF6XT
UT WOS:000352700900045
ER
PT J
AU Fellows, M
Baylis, C
Cohen, L
Marks, RJ
AF Fellows, Matthew
Baylis, Charles
Cohen, Lawrence
Marks, Robert J., II
TI Real-Time Load Impedance Optimization for Radar Spectral Mask Compliance
and Power Efficiency
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID ADJACENT-CHANNEL POWER; MULTIOBJECTIVE OPTIMIZATION; PARETO; ALGORITHM;
DESIGN; PULL; RF
AB This paper presents a fast optimization algorithm for power amplifiers in radar transmitters based upon a metric designed to assess spectral mask compliance. The search finds the load impedance maximizing the power-added efficiency (PAE) while providing compliance with the assigned spectral mask. Measurement results illustrate consistency in the chosen optimum values of efficiency, while spectral mask requirements are consistently met at the optimum load impedances chosen by the search. This algorithm will allow adaptive radar transmitter amplifiers to quickly adjust their load impedances to change frequency bands of operation, change spectral output properties based on nearby spectrum users, and meet dynamically varying spectral mask requirements.
C1 [Fellows, Matthew; Baylis, Charles; Marks, Robert J., II] Baylor Univ, Dept Elect & Comp Engn, Waco, TX 76798 USA.
[Cohen, Lawrence] Naval Res Lab, Washington, DC 20375 USA.
RP Fellows, M (reprint author), Baylor Univ, Dept Elect & Comp Engn, One Bear Pl 97356, Waco, TX 76798 USA.
EM Charles_Baylis@Baylor.edu
FU National Science Foundation [ECCS-1343316]
FX This work has been funded under a grant from the National Science
Foundation (Award ECCS-1343316).
NR 31
TC 2
Z9 2
U1 0
U2 0
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9251
EI 1557-9603
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD JAN
PY 2015
VL 51
IS 1
BP 591
EP 599
DI 10.1109/TAES.2014.130825
PG 9
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
Telecommunications
SC Engineering; Telecommunications
GA CF6XT
UT WOS:000352700900046
ER
PT J
AU Yin, P
Zhang, JH
Parrish, DA
Shreeve, JM
AF Yin, Ping
Zhang, Jiaheng
Parrish, Damon A.
Shreeve, Jean'ne M.
TI Energetic fused triazoles - a promising C-N fused heterocyclic cation
SO JOURNAL OF MATERIALS CHEMISTRY A
LA English
DT Article
ID BUILDING-BLOCKS; SALTS; DINITRAMIDE; DERIVATIVES; PYRAZOLES; DNU
AB In the field of energetic materials, molecular stability and detonation properties are two key criteria used to evaluate overall performance. In this work, a new family of 3,6,7-triamino-7H-[1,2,4] triazolo[5,1-c][1,2,4] triazol-2-ium salts is explored as fused azole based energetic materials. These nitrogen-rich salts were fully characterized by elemental analyses, and infrared and multinuclear NMR spectra. Structural confirmation of 6, 8 and 13 was supported by single-crystal X-ray diffraction. Computational studies associated with heats of formation and detonation performance were performed by using Gaussian 03 and EXPLO5 v6.01 programs, respectively. Based on experimental and theoretical data, free base 8 and ionic derivatives 7 and 9 show good densities (d, 1.73-1.82 g cm(3)), favourable thermal stabilities (T-d, 199-279 degrees C), excellent detonation performance (P, 25.9-33.9 GPa; v(D), 8580-9090 m s(-1)) and acceptable impact and friction sensitivities (IS, 6-40 J; FS, 160-360 N).
C1 [Yin, Ping; Zhang, Jiaheng; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA.
[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@uidhao.edu
RI Yin, Ping/A-3699-2014
OI Yin, Ping/0000-0002-2870-8225
FU ONR [NOOO14-12-1-0536, N00014-15-WX-0-0149]; DTRA [HDTRA 1-11-1-0034]
FX We are grateful to ONR (NOOO14-12-1-0536), ONR (N00014-15-WX-0-0149) and
to DTRA (HDTRA 1-11-1-0034) for support of this research.
NR 45
TC 12
Z9 13
U1 1
U2 25
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 2015
VL 3
IS 16
BP 8606
EP 8612
DI 10.1039/c5ta01329a
PG 7
WC Chemistry, Physical; Energy & Fuels; Materials Science,
Multidisciplinary
SC Chemistry; Energy & Fuels; Materials Science
GA CF3ZZ
UT WOS:000352489200025
ER
PT J
AU Trinh, QT
Kalisch, S
Preusse, P
Chun, HY
Eckermann, SD
Ern, M
Riese, M
AF Trinh, Q. T.
Kalisch, S.
Preusse, P.
Chun, H. -Y.
Eckermann, S. D.
Ern, M.
Riese, M.
TI A comprehensive observational filter for satellite infrared limb
sounding of gravity waves
SO ATMOSPHERIC MEASUREMENT TECHNIQUES
LA English
DT Article
ID BREWER-DOBSON CIRCULATION; DEEP TROPICAL CONVECTION; MIDDLE ATMOSPHERE;
MOMENTUM FLUX; PARAMETERIZATION SCHEME; DRAG PARAMETERIZATION; SABER
EXPERIMENT; CLIMATE MODELS; STRATOSPHERE; RADIANCE
AB This paper describes a comprehensive observational filter for satellite infrared limb sounding of gravity waves. The filter considers instrument visibility and observation geometry with a high level of accuracy. It contains four main processes: visibility filter, projection of the wavelength on the tangent-point track, aliasing effect, and calculation of the observed vertical wavelength. The observation geometries of the SABER (Sounding of the Atmosphere using Broadband Emission Radiometry) and HIRDLS (High Resolution Dynamics Limb Sounder) are mimicked. Gravity waves (GWs) simulated by coupling a convective GW source (CGWS) scheme and the gravity wave regional or global ray tracer (GROGRAT) are used as an example for applying the observational filter. Simulated spectra in terms of horizontal and vertical wave numbers (wavelengths) of gravity wave momentum flux (GWMF) are analyzed under the influence of the filter. We find that the most important processes, which have significant influence on the spectrum are the visibility filter (for both SABER and HIRDLS observation geometries) and aliasing for SABER and projection on tangent-point track for HIRDLS. The vertical wavelength distribution is mainly affected by the retrieval as part of the 'visibility filter' process. In addition, the short-horizontal-scale spectrum may be projected for some cases into a longer horizontal wavelength interval which originally was not populated. The filter largely reduces GWMF values of very short horizontal wavelength waves. The implications for interpreting observed data are discussed.
C1 [Trinh, Q. T.; Kalisch, S.; Preusse, P.; Ern, M.; Riese, M.] Forschungszentrum Julich, Inst Energy & Climate Res, Stratosphere IEK 7, D-52425 Julich, Germany.
[Chun, H. -Y.] Yonsei Univ, Dept Atmospher Sci, Lab Atmospher Dynam, Seoul 120749, South Korea.
[Eckermann, S. D.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Trinh, QT (reprint author), Forschungszentrum Julich, Inst Energy & Climate Res, Stratosphere IEK 7, D-52425 Julich, Germany.
EM t.trinh@fz-juelich.de
RI Riese, Martin/A-3927-2013; Ern, Manfred/I-8839-2016; Preusse,
Peter/A-1193-2013;
OI Riese, Martin/0000-0001-6398-6493; Ern, Manfred/0000-0002-8565-2125;
Preusse, Peter/0000-0002-8997-4965; Trinh, Thai/0000-0001-5588-2184
NR 88
TC 10
Z9 10
U1 4
U2 8
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 2015
VL 8
IS 3
BP 1491
EP 1517
DI 10.5194/amt-8-1491-2015
PG 27
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CE9IT
UT WOS:000352158300033
ER
PT B
AU Shao, XY
Mueller, A
Griffith, C
Enyart, G
AF Shao, Xiaoyun
Mueller, Adam
Griffith, Chelsea
Enyart, Griffin
BE Cimellaro, GP
Nagarajaiah, S
Kunnath, SK
TI A Versatile Hybrid Testing System and Its Application in Developing
Hybrid Simulation Methods for NEESR Projects
SO COMPUTATIONAL METHODS, SEISMIC PROTECTION, HYBRID TESTING AND RESILIENCE
IN EARTHQUAKE ENGINEERING: A TRIBUTE TO THE RESEARCH CONTRIBUTIONS OF
PROF. ANDREI REINHORN
SE Geotechnical Geological and Earthquake Engineering
LA English
DT Article; Book Chapter
AB Hybrid simulation method in earthquake engineering, which combines physical testing and numerical simulation, was developed to evaluate seismic performance of civil structural systems. Thus, instead of constructing a full sized structural specimen, hybrid simulation allows researchers to build a complex experimental substructure tested experimentally while the relatively simple part of the structure is numerically simulated to economically obtain the full structural responses. Recently a versatile hybrid testing system was built at the Laboratory of Earthquake and Structural Simulation (LESS) at Western Michigan University. The major equipment consists of a seismic simulator (often called shake table), an actuator/reaction system and an advanced hybrid testing controller. Such testing system is capable of conducting various hybrid simulation experiments such as displacement-based pseudodynamic substructure testing as well as force-based real time dynamic hybrid testing. The benchmark scale testing system at LESS is particularly suitable for development of hybrid simulation techniques and earthquake engineering education and outreach activities. The development of this testing system including both hardware and software integration is presented. Example hybrid simulation methods that can be conducted using the developed testing system as well as its applications in the hybrid simulation method development of two NEESR projects are discussed.
C1 [Shao, Xiaoyun; Mueller, Adam] Western Michigan Univ, Kalamazoo, MI 49008 USA.
[Griffith, Chelsea] Naval Sea Syst Command, Dept Navy, Washington, DC USA.
[Enyart, Griffin] City Decatur, Decatur, IL 62523 USA.
RP Shao, XY (reprint author), Western Michigan Univ, 1903 W Michigan Ave, Kalamazoo, MI 49008 USA.
EM Xiaoyun.shao@wmich.edu; Chelsea.Griffith@navy.mil;
griffinenyart@gmail.com
NR 12
TC 0
Z9 0
U1 0
U2 2
PU SPRINGER-VERLAG BERLIN
PI BERLIN
PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY
BN 978-3-319-06394-2; 978-3-319-06393-5
J9 GEOTECH GEOL EARTHQ
PY 2015
VL 33
BP 129
EP 148
DI 10.1007/978-3-319-06394-2_9
D2 10.1007/978-3-319-06394-2
PG 20
WC Engineering, Geological
SC Engineering
GA BC2EC
UT WOS:000350769000010
ER
PT J
AU Oba, RM
AF Oba, Roger M.
TI MINIMAL SPARSE SAMPLING FOR FOURIER-POLYNOMIAL CHAOS IN ACOUSTIC
SCATTERING
SO INTERNATIONAL JOURNAL FOR UNCERTAINTY QUANTIFICATION
LA English
DT Article
DE Smolyak algorithm; polynomial chaos; stochastic sparse grid collocation;
high-dimensional methods; stochastic partial differential equations;
acoustics
ID QUADRATURE-RULES; PROPAGATION; UNCERTAINTY; INTEGRATION; SURFACES
AB Single frequency acoustic scattering from an uncertain surface (with sinusoidal components) admits an efficient Fourier-polynomial chaos (FPC) expansion of the acoustic field. The expansion coefficients are computed non-intrusively, i.e., by functional sampling from existing acoustic models. The structure of the acoustic decomposition permits sparse selection of FPC orders within the framework of the Smolyak construction. The main result shows a minimal, sparse sampling required to exactly reconstruct FPC expansions of Smolyak form. To this end, this paper defines two concepts: exactly discretizable orthonormal, function systems (EDO); and nested systems created by decimation or "fledging." An EDO generalizes the Nyquist-Shannon sampling conditions (exact recovery of "bandlimited" functions given sufficient sampling) to multidimensional FPC expansions. EDO criteria replace the concept of polynomially exact quadrature. Fledging parallels the idea of sub-sampling for sub-bands, from higher to lower level. The FPC Smolyak construction is an EDO fledged from a full grid EDO. An EDO results exactly when the sampled FPC expansion can be inverted to find its coefficients. EDO fledging requires that the lower level (1) has grid points and expansion orders nested in the higher level, and (2) derives its map from the samples to the coefficients from the higher level map. The theory begins with a single dimension fledged EDO, since a tensor product of fledged EDOs yields a fledged tensor EDO. A sequence of nested EDO levels fledge recursively from the largest EDO. The Smolyak construction uses telescoping sums of tensor products up to a maximum level to develop nested EDO systems for sparse grids and orders. The Smolyak construction transform gives exactly the inverse of the weighted evaluation map, and that inverse has a condition number that expresses the numerical limitations of the Smolyak construction.
C1 Naval Res Lab, Acoust Div, Washington, DC 20375 USA.
RP Oba, RM (reprint author), Naval Res Lab, Acoust Div, Washington, DC 20375 USA.
EM roger.oba@nrl.navy.mil
FU Office of Naval Research
FX This research is sponsored by the Office of Naval Research.
NR 25
TC 0
Z9 0
U1 2
U2 3
PU BEGELL HOUSE INC
PI DANBURY
PA 50 NORTH ST, DANBURY, CT 06810 USA
SN 2152-5080
EI 2152-5099
J9 INT J UNCERTAIN QUAN
JI Int. J. Uncertain. Quantif.
PY 2015
VL 5
IS 1
BP 1
EP 20
DI 10.1615/Int.J.UncertaintyQuantification.2015010084
PG 20
WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary
Applications
SC Engineering; Mathematics
GA CF6YB
UT WOS:000352701700001
ER
PT J
AU Beasley, CA
Sassin, MB
Long, JW
AF Beasley, Christopher A.
Sassin, Megan B.
Long, Jeffrey W.
TI Extending Electrochemical Quartz Crystal Microbalance Techniques to
Macroscale Electrodes: Insights on Pseudocapacitance Mechanisms in
MnOx-Coated Carbon Nanofoams
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID CHARGE STORAGE MECHANISM; ENERGY-STORAGE; AQUEOUS-ELECTROLYTES;
MANGANESE-DIOXIDE; NANOSCALE MNO2; SUPERCAPACITORS; OXIDE; CAPACITORS;
NANOARCHITECTURES; PERFORMANCE
AB Electrochemical quartz crystal microbalance studies of MnOx-coated carbon nanofoams reveal that charge-compensation mechanisms associated with MnOx pseudocapacitance in mild aqueous electrolytes are dominated by anion insertion rather than more commonly reported cation ejection. Specific charge-compensation behavior depends on such factors as electrolyte composition, nanofoam pore size, and polarization amplitude. For example, MnOx carbon nanofoams with average pore sizes of 5-20 nm, cycled in 2.5 M LiNO3, reveal a kinetically-hindered, mixed anion-cation charge-compensation mechanism, whereas the same nanofoam cycled in 2.5 M NaNO3 shows only anion association. Nanofoams with larger pores (10-200 nm) that are cycled in 2.5 M LiNO3, reveal anion-only charge compensation. Our results demonstrate that critical new insights on charge-storage mechanisms are achieved using EQCM methods, even when analyzing practical, macroscale electrodes such as carbon nanofoams. (C) The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. All rights reserved.
C1 [Beasley, Christopher A.] Gamry Instruments, Warminster, PA 18974 USA.
[Sassin, Megan B.; Long, Jeffrey W.] Naval Res Lab, Surface Chem Branch, Washington, DC 20375 USA.
RP Beasley, CA (reprint author), Gamry Instruments, Warminster, PA 18974 USA.
EM cbeasley@gamry.com
FU U.S. Office of Naval Research
FX We thank Dr. Debra Rolison (U.S. Naval Research Laboratory, Washington,
DC) for providing valuable feedback in the preparation of this
manuscript. J.W.L. and M.B.S acknowledge financial support from the U.S.
Office of Naval Research.
NR 41
TC 2
Z9 2
U1 4
U2 17
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 2015
VL 162
IS 5
BP A5060
EP A5064
DI 10.1149/2.0091505jes
PG 5
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA CE6VL
UT WOS:000351976200011
ER
PT J
AU Brousse, T
Belanger, D
Long, JW
AF Brousse, Thierry
Belanger, Daniel
Long, Jeffrey W.
TI To Be or Not To Be Pseudocapacitive?
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID RAY-ABSORPTION SPECTROSCOPY; ELECTROCHEMICAL CAPACITORS; CHARGE STORAGE;
OXIDE-FILMS; ACTIVATED CARBON; MANGANESE OXIDE; RUO2 ELECTRODES;
ENERGY-STORAGE; SUPERCAPACITORS; PERFORMANCE
AB There are an increasing number of studies regarding active electrode materials that undergo faradaic reactions but are used for electrochemical capacitor applications. Unfortunately, some of these materials are described as "pseudocapacitive" materials despite the fact that their electrochemical signature (e.g., cyclic voltarnmogram and charge/discharge curve) is analogous to that of a "battery" material, as commonly observed for Ni(OH)(2) and cobalt oxides in KOH electrolyte. Conversely, true pseudocapacitive electrode materials such as MnO2 display electrochemical behavior typical of that observed for a capacitive carbon electrode. The difference between these two classes of materials will be explained, and we demonstrate why it is inappropriate to describe nickel oxide or hydroxide and cobalt oxide/hydroxide as pseudocapacitive electrode materials. (C) The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commerdial reuse; distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. All rights reserved.
C1 [Brousse, Thierry] Univ Nantes, Inst Mat Jean Rouxel IMN, F-44322 Nantes 3, France.
[Brousse, Thierry] CNRS, Reseau Stockage Electrochim Energi RS2E, FR 3459, F-75700 Paris, France.
[Belanger, Daniel] Univ Quebec, Dept Chim, Montreal, PQ H3C 3P8, Canada.
[Long, Jeffrey W.] US Naval Res Lab, Surface Chem Branch, Washington, DC 20375 USA.
RP Brousse, T (reprint author), Univ Nantes, Inst Mat Jean Rouxel IMN, F-44322 Nantes 3, France.
EM Thierry.brousse@univ-nantes.fr
NR 43
TC 238
Z9 238
U1 46
U2 152
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 2015
VL 162
IS 5
BP A5185
EP A5189
DI 10.1149/2.0201505jes
PG 5
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA CE6VL
UT WOS:000351976200026
ER
PT J
AU Long, JW
Brousse, T
Belanger, D
AF Long, Jeffrey W.
Brousse, Thierry
Belanger, Daniel
TI Electrochemical Capacitors: Fundamentals to Applications
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Editorial Material
C1 [Long, Jeffrey W.] US Naval Res Lab, Sulface Chem Branch, Washington, DC 20375 USA.
[Brousse, Thierry] Univ Nantes, Inst Mat Jean Rouxel IMN, CNRS, F-44322 Nantes 3, France.
[Belanger, Daniel] Univ Quebec, Dept Chim, Montreal, PQ H3C 3P8, Canada.
RP Long, JW (reprint author), US Naval Res Lab, Sulface Chem Branch, Code 6170, Washington, DC 20375 USA.
EM jeffrey.long@nrl.navy.mil; thierry.brousse@univ-nantes.fr;
belanger.daniel@uqam.ca
NR 2
TC 1
Z9 1
U1 7
U2 36
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 2015
VL 162
IS 5
BP Y3
EP Y3
DI 10.1149/2.0261505jes
PG 1
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA CE6VL
UT WOS:000351976200001
ER
PT J
AU Mcrae, RHD
Sharples, JJ
Fromm, M
AF Mcrae, R. H. D.
Sharples, J. J.
Fromm, M.
TI Linking local wildfire dynamics to pyroCb development
SO NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
LA English
DT Article
ID MOISTURE-CONTENT; FIRE; STRATOSPHERE; PYROCUMULONIMBUS; AUSTRALIA; MODEL
AB Extreme wildfires are global phenomena that consistently result in loss of life and property and further impact the cultural, economic and political stability of communities. In their most severe form they cause widespread devastation of environmental assets and are capable of impacting the upper troposphere/lower stratosphere through the formation of a thunderstorm within the plume. Such fires are now often observed by a range of remote-sensing technologies, which together allow a greater understanding of a fire's complex dynamics.
This paper considers one such fire that burnt in the Blue Mountains region of Australia in late November 2006, which is known to have generated significant pyrocumulonimbus clouds in a series of blow-up events. Observations of this fire are analysed in detail to investigate the localised processes contributing to extreme fire development. In particular, it has been possible to demonstrate for the first time that the most violent instances of pyroconvection were driven by, and not just associated with, atypical local fire dynamics, especially the fire channelling phenomenon, which arises due to an interaction between an active fire, local terrain attributes and critical fire weather and causes the fire to rapidly transition from a frontal to an areal burning pattern. The impacts of local variations in fire weather and of the atmospheric profile are also discussed, and the ability to predict extreme fire development with state-of-the-art tools is explored.
C1 [Mcrae, R. H. D.] Australian Capital Terr Emergency Serv Agcy, Canberra, ACT, Australia.
[Sharples, J. J.] Univ New S Wales, Canberra, ACT, Australia.
[Fromm, M.] US Naval Res Lab, Washington, DC USA.
RP Mcrae, RHD (reprint author), Australian Capital Terr Emergency Serv Agcy, Canberra, ACT, Australia.
EM rick.mcrae@act.gov.au
NR 41
TC 4
Z9 4
U1 3
U2 13
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1561-8633
J9 NAT HAZARD EARTH SYS
JI Nat. Hazards Earth Syst. Sci.
PY 2015
VL 15
IS 3
BP 417
EP 428
DI 10.5194/nhess-15-417-2015
PG 12
WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences;
Water Resources
SC Geology; Meteorology & Atmospheric Sciences; Water Resources
GA CE9JT
UT WOS:000352160900005
ER
PT J
AU Liu, X
Queen, DR
Metcalf, TH
Karel, JE
Hellman, F
AF Liu, X.
Queen, D. R.
Metcalf, T. H.
Karel, J. E.
Hellman, F.
TI AMORPHOUS DIELECTRIC THIN FILMS WITH EXTREMELY LOW MECHANICAL LOSS
SO ARCHIVES OF METALLURGY AND MATERIALS
LA English
DT Article
DE Internal friction; amorphous silicon; elastic modulus; speed of sound;
tunneling systems
ID LOW-ENERGY EXCITATIONS; THERMAL-CONDUCTIVITY; ELASTIC PROPERTIES;
TUNNELING STATES; SOLIDS; SILICON; GLASSES; MODEL
AB The ubiquitous low-energy excitations are one of the universal phenomena of amorphous solids. These excitations dominate the acoustic, dielectric, and thermal properties of structurally disordered solids. One exception has been a type of hydrogenated amorphous silicon (a-Si:H) with 1 at.% H. Using low temperature elastic and thermal measurements of electron-beam evaporated amorphous silicon (a-Si), we show that TLS can be eliminated in this system as the films become denser and more structurally ordered under certain deposition conditions. Our results demonstrate that TLS are not intrinsic to the glassy state but instead reside in low density regions of the amorphous network. This work obviates the role hydrogen was previously thought to play in removing TLS in a-Si:H and favors an ideal four-fold covalently bonded amorphous structure as the cause for the disappearance of TLS. Our result supports the notion that a-Si can be made a "perfect glass" with "crystal-like" properties, thus offering an encouraging opportunity to use it as a simple crystal dielectric alternative in applications, such as in modern quantum devices where TLS are the source of dissipation, decoherence and 1/f noise.
C1 [Liu, X.; Metcalf, T. H.] Naval Res Lab, Washington, DC 20375 USA.
[Queen, D. R.] NRC, Washington, DC 20375 USA.
[Karel, J. E.; Hellman, F.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Hellman, F.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Liu, X (reprint author), Naval Res Lab, CODE 7130, Washington, DC 20375 USA.
RI Karel, Julie/J-5305-2014
FU Office of Naval Research; NSF [DMR-0907724]; U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was supported by the Office of Naval Research and NSF
DMR-0907724. Film growth was supported by the U.S. Department of Energy
DE-AC02-05CH11231.
NR 23
TC 1
Z9 2
U1 4
U2 10
PU POLSKA AKAD NAUK, POLISH ACAD SCIENCES, INST METALL & MATER SCI PAS
PI WARSZAWA
PA PL, 00-901 WARSZAWA, POLAND
SN 1733-3490
EI 2300-1909
J9 ARCH METALL MATER
JI Arch. Metall. Mater.
PY 2015
VL 60
IS 1
BP 359
EP 363
DI 10.1515/amm-2015-0059
PG 5
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA CE9CV
UT WOS:000352142100058
ER
PT J
AU Breger, JC
Walper, SA
Oh, E
Susumu, K
Stewart, MH
Deschamps, JR
Medintz, IL
AF Breger, Joyce C.
Walper, Scott A.
Oh, Eunkeu
Susumu, Kimihiro
Stewart, Michael H.
Deschamps, Jeffrey R.
Medintz, Igor L.
TI Quantum dot display enhances activity of a phosphotriesterase trimer
SO CHEMICAL COMMUNICATIONS
LA English
DT Article
ID BACTERIAL COLLAGEN; SURFACE; NANOPARTICLES; BIOCATALYSIS; RESONANCE;
POLYMERS; LIGANDS; ENZYMES; AGENTS
AB Phosphotriesterase was engineered into a spontaneously forming trimer by appending it to a synthetic collagen-like triple-helix motif. Enzymatic hydrolysis of the insecticide and organophosphate nerve agent simulant paraoxon was then examined. Assembling the phosphotriesterase trimer onto semiconductor quantum dots increased the enzyme's catalytic rate and efficiency.
C1 [Breger, Joyce C.; Walper, Scott A.; Deschamps, Jeffrey R.; Medintz, Igor L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
[Breger, Joyce C.] Amer Soc Engn Educ, Washington, DC 20036 USA.
[Oh, Eunkeu; Susumu, Kimihiro; Stewart, Michael H.] US Naval Res Lab, Opt Sci Div, Washington, DC 20375 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.
EM igor.medintz@nrl.navy.mil
FU DTRA; NRL NSI
FX We acknowledge support from DTRA and the NRL NSI.
NR 27
TC 13
Z9 13
U1 4
U2 22
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 1359-7345
EI 1364-548X
J9 CHEM COMMUN
JI Chem. Commun.
PY 2015
VL 51
IS 29
BP 6403
EP 6406
DI 10.1039/c5cc00418g
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA CE5BA
UT WOS:000351843500035
PM 25764989
ER
PT J
AU Babich, YV
Feigelson, BN
Chepurov, AI
AF Babich, Yuri V.
Feigelson, Boris N.
Chepurov, Anatoly I.
TI Stages of the temperature gradient growth of HPHT diamonds
SO HIGH TEMPERATURES-HIGH PRESSURES
LA English
DT Article
DE High pressure; Diamond; Growth
ID CRYSTALS; RATES
AB The investigation of crystal dynamics during HPHT diamond growth by conventional temperature gradient method in closed metal-carbon system revealed two main stages. The initial A-stage demonstrates an increase in the mass growth rate of the crystal, and the next B-stage is characterized by its stabilization near the maximum reached level. The first A-stage is assumed to be controlled by the rate of convective transport of carbon. The dissolution of carbon source is supposed as a rate-controlling step for diamond growth during the second B-stage.
C1 [Babich, Yuri V.; Chepurov, Anatoly I.] Russian Acad Sci, Inst Geol & Mineral, Siberian Branch, Novosibirsk 630090, Russia.
[Feigelson, Boris N.] Naval Res Lab, Washington, DC 20375 USA.
RP Babich, YV (reprint author), Russian Acad Sci, Inst Geol & Mineral, Siberian Branch, Pr Koptyuga 3, Novosibirsk 630090, Russia.
EM babich@igm.nsc.ru
RI Babich, Yuri/A-5655-2014; Chepurov, Anatoli/A-6730-2014
NR 12
TC 0
Z9 0
U1 3
U2 11
PU OLD CITY PUBLISHING INC
PI PHILADELPHIA
PA 628 NORTH 2ND ST, PHILADELPHIA, PA 19123 USA
SN 0018-1544
EI 1472-3441
J9 HIGH TEMP-HIGH PRESS
JI High Temp.-High Press.
PY 2015
VL 44
IS 2
BP 93
EP 103
PG 11
WC Thermodynamics; Mechanics; Materials Science, Characterization & Testing
SC Thermodynamics; Mechanics; Materials Science
GA CE8VQ
UT WOS:000352122600002
ER
PT J
AU Ioup, E
Yang, Z
Barre, B
Sample, J
Shaw, KB
Abdelguerfi, M
AF Ioup, Elias
Yang, Zhao
Barre, Brent
Sample, John
Shaw, Kevin B.
Abdelguerfi, Mahdi
TI Annotating Uncertainty in Geospatial and Environmental Data
SO IEEE INTERNET COMPUTING
LA English
DT Article
AB The Geography Markup Language (GML) - the existing standard for encoding geospatial data - has no mechanism for annotating such data with uncertainty. To address this issue while supporting the geospatial community's existing data and service standards, the authors extend GML to enable uncertainty markup. They demonstrate this extension's use with some common geospatial data types and Web services. The result is a robust capability to share error information while maintaining compatibility with existing geospatial data clients.
C1 [Ioup, Elias; Barre, Brent; Sample, John] US Naval Res Lab, Geospatial Comp Sect, Washington, DC 20375 USA.
[Yang, Zhao; Abdelguerfi, Mahdi] Univ New Orleans, Dept Comp Sci, New Orleans, LA 70148 USA.
[Shaw, Kevin B.] US Naval Res Lab, Off Geospatial Sci & Technol Innovat, Marine Geosci Div, Washington, DC USA.
RP Ioup, E (reprint author), US Naval Res Lab, Geospatial Comp Sect, Washington, DC 20375 USA.
EM elias.ioup@nrlssc.navy.mil; zyand1@uno.edu; brent.barre@nrlssc.navy.mil;
john.sample@nrlssc.navy.mil; kevin.shaw@nrlssc.navy.mil;
mabdelgu@uno.edu
NR 14
TC 0
Z9 0
U1 0
U2 1
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1089-7801
EI 1941-0131
J9 IEEE INTERNET COMPUT
JI IEEE Internet Comput.
PD JAN-FEB
PY 2015
VL 19
IS 1
BP 18
EP 27
PG 10
WC Computer Science, Software Engineering
SC Computer Science
GA CE4AG
UT WOS:000351771900003
ER
PT J
AU Hetro, A
Rossetto, J
Bahlawan, N
Ryan, M
AF Hetro, Ashley
Rossetto, Janel
Bahlawan, Nahed
Ryan, Margaret
TI Clinical pharmacists supporting patients with diabetes and/or
hyperlipidemia in a military medical home
SO JOURNAL OF THE AMERICAN PHARMACISTS ASSOCIATION
LA English
DT Article
ID MANAGEMENT; CHALLENGE; OUTCOMES; PROGRAM
AB Objective: To evaluate the effect of clinical pharmacists embedded in primary care at a military facility by reviewing laboratory assessments following pharmacist management of referred patients with diabetes and hyperlipidemia.
Methods: Electronic medical records of patients who were referred to clinical pharmacists for control of diabetes and/or hyperlipidemia were reviewed for those with at least two encounters during a 6-month period with baseline and follow-up laboratory assessments. As appropriate to patient diagnoses, glycosylated hemoglobin (A1C), low density lipoprotein cholesterol (LDLC), triglycerides (TGs), and body mass index (BMI) were included in assessments. Paired t tests were used to determine the statistical significance of mean changes between the beginning and end of the 6-month period.
Results: In the cohort of patients with diabetes (n = 46), mean A1C decrease over 6 months was 0.9 points (P = 0.004). In the cohort of patients with hyperlipidemia (n = 15), mean LDL-C decrease was 20 mg/dL (P = 0.004). Changes in mean LDL-C, TGs, and BMIs were observed in each group but were not statistically significant.
Conclusion: Although small sample sizes limited statistical power in this analysis, results suggest that referral of ambulatory patients to a clinical pharmacist in a military medical home for diabetes and/or hyperlipidemia improved care management.
C1 [Hetro, Ashley] Naval Hosp, Camp Pendleton, CA 92055 USA.
[Rossetto, Janel] Naval Hosp, Dept Pharm, Camp Pendleton, CA 92055 USA.
[Bahlawan, Nahed] Naval Hosp, Pharm Residency Program, Camp Pendleton, CA 92055 USA.
[Ryan, Margaret] Naval Hosp, Clin Invest Program, Camp Pendleton, CA 92055 USA.
RP Hetro, A (reprint author), Naval Hosp, Camp Pendleton, CA 92055 USA.
EM Ashley.hetro@med.navy.mil
NR 5
TC 0
Z9 0
U1 0
U2 0
PU AMER PHARMACEUTICAL ASSOC
PI WASHINGTON
PA 2215 CONSTITUTION AVE NW, WASHINGTON, DC 20037 USA
SN 1544-3191
EI 1544-3450
J9 J AM PHARM ASSOC
JI J. Am. Pharm. Assoc.
PD JAN-FEB
PY 2015
VL 55
IS 1
BP 73
EP 76
DI 10.1331/JAPhA.2015.14103
PG 4
WC Pharmacology & Pharmacy
SC Pharmacology & Pharmacy
GA CE7IN
UT WOS:000352012700016
PM 25539358
ER
PT B
AU Bradford, JC
AF Bradford, James C.
BE Thompson, AS
Frentzos, CG
TI THE WAR OF 1812 1812-1815
SO ROUTLEDGE HANDBOOK OF AMERICAN MILITARY AND DIPLOMATIC HISTORY: THE
COLONIAL PERIOD TO 1877
LA English
DT Article; Book Chapter
C1 [Bradford, James C.] Texas A&M Univ, College Stn, TX 77843 USA.
RP Bradford, JC (reprint author), US Naval Acad, Air War Coll, Annapolis, MD 21402 USA.
NR 114
TC 0
Z9 0
U1 0
U2 0
PU ROUTLEDGE
PI ABINGDON
PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND
BN 978-1-315-81734-7; 978-0-415-53380-5
PY 2015
BP 175
EP 181
PG 7
WC History
SC History
GA BB9SG
UT WOS:000348591300021
ER
PT B
AU Schroeder, JH
AF Schroeder, John H.
BE Thompson, AS
Frentzos, CG
TI COMMODORE MATTHEW C. PERRY AND JAPAN
SO ROUTLEDGE HANDBOOK OF AMERICAN MILITARY AND DIPLOMATIC HISTORY: THE
COLONIAL PERIOD TO 1877
LA English
DT Article; Book Chapter
C1 [Schroeder, John H.] Univ Wisconsin Milwaukee, Milwaukee, WI 53211 USA.
[Schroeder, John H.] US Naval Acad, Annapolis, MD 21402 USA.
RP Schroeder, JH (reprint author), Univ Wisconsin Milwaukee, Milwaukee, WI 53211 USA.
NR 5
TC 0
Z9 0
U1 1
U2 1
PU ROUTLEDGE
PI ABINGDON
PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND
BN 978-1-315-81734-7; 978-0-415-53380-5
PY 2015
BP 249
EP 256
PG 8
WC History
SC History
GA BB9SG
UT WOS:000348591300030
ER
PT J
AU Boyd, TJ
Montgomery, MT
Cuenca, RH
Hagimoto, Y
AF Boyd, T. J.
Montgomery, M. T.
Cuenca, R. H.
Hagimoto, Y.
TI Combined radiocarbon and CO2 flux measurements used to determine in situ
chlorinated solvent mineralization rate
SO ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
LA English
DT Article
ID VADOSE ZONE; NATURAL ATTENUATION; BIODEGRADATION; BIOREMEDIATION;
GROUNDWATER; PERFORMANCE
AB A series of combined measurements was made at the Naval Air Station North Island (NASNI) Installation Restoration Site 5, Unit 2 during July and August 2013. Combined measurements included CO2 respiration rate, CO2 radiocarbon content to estimate chlorinated hydrocarbon (CH) mineralization and a zone of influence (ZOI) model. CO2 was collected continuously over 2 two-week periods by recirculating monitoring well headspace gas through NaOH traps. A series of 12 wells in the main CH plume zone and a background well with no known historical contamination were sampled. The background well CO2 was used to determine radiocarbon content derived from respired natural organic matter. A two end-member mixing model was then used to determine the amount of CH-derived carbon present in the CO2 collected from plume region wells. The ZOI model provided an estimate for the soil volume sampled at each well. CH mineralization rates were highest upgradient and at the plume fringe for areas of high historical contamination and ranged from 0.02 to 5.6 mg CH carbon per day. Using the ZOI model volume estimates, CH-carbon removal ranged from 0.2 to 32 mg CH-carbon m(-3) per day. Because the rate estimates were based on a limited sampling (temporally), they were not further extrapolated to long-term contaminant degradation estimates. However, if the site manager or regulators required them, estimates - subject to long-term variability uncertainties - could be made using volume and rate data determined over short timescales. A more comprehensive seasonal sampling is needed to constrain long-term remediation models for the entire impacted area and identify environmental conditions related to more rapid turnover times amongst the wells.
C1 [Boyd, T. J.; Montgomery, M. T.] US Naval Res Lab, Marine Biogeochem Sect, Washington, DC 20375 USA.
[Cuenca, R. H.; Hagimoto, Y.] Oregon State Univ, Dept Biol & Ecol Engn, Corvallis, OR 97331 USA.
RP Boyd, TJ (reprint author), US Naval Res Lab, Marine Biogeochem Sect, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM thomas.boyd@nrl.navy.mil; Richard.Cuenca@oregonstate.edu
FU Strategic Environmental Research and Development Program (SERDP)
[ER-2338]
FX Financial support for this research was provided by the Strategic
Environmental Research and Development Program (SERDP ER-2338; Andrea
Leeson, Program Manager). Michael Pound, Naval Facilities Engineering
Command, Southwest provided logistical and site support for the project.
Brian White, Erika Thompson and Richard Wong (CBI Federal Services, Inc)
provided on-site logistical support, historical site perspective and
relevant reports. Todd Wiedemeier (T. H. Wiedemeier & Associates)
provided documentation, discussion and historical site perspectives.
NR 33
TC 0
Z9 0
U1 4
U2 10
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2050-7887
EI 2050-7895
J9 ENVIRON SCI-PROC IMP
JI Environ. Sci.-Process Impacts
PY 2015
VL 17
IS 3
BP 683
EP 692
DI 10.1039/c4em00514g
PG 10
WC Chemistry, Analytical; Environmental Sciences
SC Chemistry; Environmental Sciences & Ecology
GA CD9TM
UT WOS:000351441300019
PM 25686305
ER
PT J
AU Solomon, N
AF Solomon, Nathan
TI "Only God Can Judge Me": Faith, Trauma, and Combat
SO INTERPRETATION-A JOURNAL OF BIBLE AND THEOLOGY
LA English
DT Article
DE Trauma; Combat; Chaplaincy; Veterans; Liminality; Pastoral Care; PTSD
AB The particular trauma of combat is a special subset of trauma for those who experience it (the Sent), those who call for it (the Senders), and those who minister in the midst of it (the Liminals). The trauma experiences of veterans are a unique opportunity for the church to embrace its own liminal calling.
C1 US Navy, Chaplain Corps, Washington, DC 20374 USA.
RP Solomon, N (reprint author), US Navy, Chaplain Corps, Washington, DC 20374 USA.
EM wnsolomon@gmail.com
NR 14
TC 0
Z9 0
U1 0
U2 0
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0020-9643
EI 2159-340X
J9 INTERPRETATION
JI Interpretation-J. Bible Theol.
PD JAN
PY 2015
VL 69
IS 1
BP 63
EP 75
DI 10.1177/0020964314552631
PG 13
WC Religion
SC Religion
GA CD7VH
UT WOS:000351302300005
ER
PT J
AU Koul, M
AF Koul, Michelle
TI The effect of zinc-rich epoxy coatings on the corrosion and cracking
resistance of armored military vehicles
SO MATERIALS PERFORMANCE
LA English
DT Editorial Material
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Koul, M (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
EM koul@usna.edu
NR 0
TC 0
Z9 0
U1 2
U2 3
PU NATL ASSOC CORROSION ENG
PI HOUSTON
PA 1440 SOUTH CREEK DRIVE, HOUSTON, TX 77084-4906 USA
SN 0094-1492
J9 MATER PERFORMANCE
JI Mater. Perform.
PD JAN
PY 2015
VL 54
IS 1
BP 22
EP 23
PG 2
WC Materials Science, Characterization & Testing
SC Materials Science
GA CD6JD
UT WOS:000351194500006
ER
PT J
AU Xu, Q
Wei, L
Nai, K
Liu, S
Rabin, RM
Zhao, QY
AF Xu, Qin
Wei, Li
Nai, Kang
Liu, Shun
Rabin, Robert M.
Zhao, Qingyun
TI A Radar Wind Analysis System for Nowcast Applications
SO ADVANCES IN METEOROLOGY
LA English
DT Article
ID WSR-88D; ERROR
AB A radar wind analysis system (RWAS) has been developed for nowcast applications. By ingesting real-time wind observations from operational WSR-88D radars and surface mesonet, this system can produce and display real-time vector winds at each selected vertical level or on each conical surface of radar scans superimposed on radar reflectivity or radial-velocity images. An early version of the system has been evaluated and used to provide real-time winds to drive high-resolution emergency response dispersion models. This paper presents the detailed formulations of background error correlation functions used in each of the three steps of vectorwind analysis performed in the RWAS and the method of solution used in each step of vectorwind analysis. The performances of the RWAS are demonstrated by illustrative examples.
C1 [Xu, Qin; Nai, Kang; Rabin, Robert M.] Natl Severe Storms Lab, Norman, OK 73072 USA.
[Wei, Li; Nai, Kang] Univ Oklahoma, Cooperat Inst Mesoscale Meteorol Studies, Oklahoma City, OK 73072 USA.
[Liu, Shun] Natl Ctr Environm Predict, College Pk, MD 20740 USA.
[Liu, Shun] IM Syst Grp Inc, College Pk, MD 20740 USA.
[Zhao, Qingyun] Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
RP Xu, Q (reprint author), Natl Severe Storms Lab, Norman, OK 73072 USA.
EM qin.xu@noaa.gov
FU ONR [N000141410281]; DOC/NOAA/OAR under NOAA-OU Cooperative Agreement
[NA17RJ1227]
FX The authors are thankful to Dr. Jidong Gao of NSSL and the anonymous
reviewer for their comments and suggestions that improved the
presentation of the results. This research was supported by the ONR
Grant N000141410281 to the University of Oklahoma (OU). Funding was also
provided by DOC/NOAA/OAR under NOAA-OU Cooperative Agreement no.
NA17RJ1227.
NR 28
TC 1
Z9 1
U1 0
U2 2
PU HINDAWI PUBLISHING CORPORATION
PI NEW YORK
PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA
SN 1687-9309
EI 1687-9317
J9 ADV METEOROL
JI Adv. Meteorol.
PY 2015
AR 264515
DI 10.1155/2015/264515
PG 13
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CD4PS
UT WOS:000351066500001
ER
PT J
AU Goddi, C
Henkel, C
Zhang, Q
Zapata, L
Wilson, TL
AF Goddi, C.
Henkel, C.
Zhang, Q.
Zapata, L.
Wilson, T. L.
TI Hot ammonia around young O-type stars II. JVLA imaging of highly excited
metastable NH3 masers in W51-North
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE masers; stars: formation; ISM: molecules; radio lines: ISM; ISM:
individual objects: W51; ISM: clouds
ID W51 MASSIVE CORES; FORMING REGIONS; NONMETASTABLE AMMONIA; INTERSTELLAR
AMMONIA; DYNAMICAL COLLAPSE; SOURCE I; EMISSION; RESOLUTION; AU;
VARIABILITY
AB Context. This paper is the second in a series of ammonia (NH3) multilevel imaging studies in high-mass star forming regions.
Aims. We want to identify the location of the maser emission from highly excited levels of ammonia within the W51 IRS2 high-mass star forming complex that was previously discovered in a single dish monitoring program.
Methods. We have used the Karl Jansky Very Large Array (JVLA) at the 1 cm band to map five highly excited metastable inversion transitions of NH3, (J, K) = (6, 6), (7, 7), (9, 9), (10, 10), and (13, 13), in W51 IRS2 with similar to 0.'' 2 angular resolution.
Results. We present detections of both thermal (extended) ammonia emission in the five inversion lines, with rotational states ranging in energy from about 400 K to 1700 K, and point-like ammonia maser emission in the (6, 6), (7, 7), and (9, 9) lines. For the point-like emission, we estimate lower limits to the peak brightness temperatures of 1.7 x 10(5) K, 6 x 10(3) K, and 1 x 10(4) K for the (6, 6), (7, 7), and (9, 9) transitions, respectively, confirming their maser nature. The thermal ammonia emits around a local standard of rest velocity of V-LSR = 60 km s(-1), near the cloud's systemic velocity, appears elongated in the east-west direction across 4 '' and is confined by the HII regions W51d (to the north), W51d1 (to the east), and W51d2 (to the west). The NH3 masers are observed in the eastern tip of the dense clump traced by thermal NH3, offset by 0.'' 65 to the east from its emission peak, and have a peak velocity at similar to 47.5 km s(-1). No maser components are detected near the systemic velocity. The NH3 masers arise close to but separated from (0.'' 65 or 3500 AU) the rare vibrationally excited SiO masers, which are excited in a powerful bipolar outflow driven by the deeply embedded high-mass young stellar object (YSO) W51-North. This means that the two maser species cannot be excited by the same object. Interestingly, the NH3 masers originate at the same sky position as a peak in a submm line of SO2 imaged with the Submillimeter Array, tracing a face-on circumstellar disk or ring around W51-North. In addition, the thermal emission from the most highly excited NH3 lines, (10, 10) and (13, 13), shows two main condensations, the dominant one towards W51-North with the SiO and H2O masers, and a weaker peak at the NH3 maser position.
Conclusions. We propose a scenario where the ring seen in SO2 emission is a circumbinary disk surrounding (at least) two high-mass YSOs, W51-North (exciting the SiO masers) and a nearby companion (exciting the NH3 masers), separated by 3500 AU. This finding indicates a physical connection (in a binary) between the two rare SiO and NH3 maser species.
C1 [Goddi, C.] Joint Inst VLBI Europe, NL-7990 AA Dwingeloo, Netherlands.
[Henkel, C.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Henkel, C.] King Abdulaziz Univ, Dept Astron, Jeddah 21589, Saudi Arabia.
[Zhang, Q.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Zapata, L.] Univ Nacl Autonoma Mexico, Ctr Radioastron & Astrofis, Mexico City 58089, DF, Mexico.
[Wilson, T. L.] US Naval Res Lab, Washington, DC 20375 USA.
RP Goddi, C (reprint author), Joint Inst VLBI Europe, Postbox 2, NL-7990 AA Dwingeloo, Netherlands.
EM goddi@jive.nl
NR 41
TC 3
Z9 3
U1 0
U2 1
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
EI 1432-0746
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD JAN
PY 2015
VL 573
AR A109
DI 10.1051/0004-6361/201424696
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA CD1AM
UT WOS:000350806000029
ER
PT J
AU Schmied, EA
Padilla, GA
Thomsen, CJ
Lauby, MDH
Harris, E
Taylor, MK
AF Schmied, Emily A.
Padilla, Genieleah A.
Thomsen, Cynthia J.
Lauby, Melissa D. Hiller
Harris, Erica
Taylor, Marcus K.
TI Sex differences in coping strategies in military survival school
SO JOURNAL OF ANXIETY DISORDERS
LA English
DT Article
DE Coping; Military; Posttraumatic stress disorder; Sex differences
ID POSTTRAUMATIC-STRESS-DISORDER; MENTAL-HEALTH DIAGNOSES; CONFIRMATORY
FACTOR-ANALYSIS; STRUCTURAL EQUATION MODELS; GENDER-DIFFERENCES;
AFGHANISTAN VETERANS; WAR VETERANS; EMOTION REGULATION; SOCIAL SUPPORT;
RISK-FACTORS
AB A wealth of research has examined psychological responses to trauma among male military service members, but few studies have examined sex differences in response to trauma, such as coping strategies. This study assessed coping strategies used by male and female U.S. service members completing an intensely stressful mock-captivity exercise, compared strategies by sex, and assessed the relationship between coping and posttraumatic stress symptoms (PTSS). Two hundred service members (78% male) completed self-report surveys before and after mock captivity. Surveys assessed demographics, service characteristics, PTSS, and coping strategies used during mock captivity. Participants used seven coping strategies: denial, self-blame, religion, self-distraction, behavioral disengagement, positive reframing, and planning. Women used denial (p <= .05), self-blame (p <= .05), and positive reinterpretation (p <= .05) strategies more frequently than men, and they had higher PTSS levels following the exercise. Structural equation modeling showed that the relationship between sex and PTSS was fully Mediated by coping strategies. The results of this study suggest that reducing the use of maladaptive coping strategies may mitigate PTSS among females. Future efforts should target improving coping during highly stressful and traumatic experiences. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Schmied, Emily A.; Padilla, Genieleah A.; Thomsen, Cynthia J.; Harris, Erica; Taylor, Marcus K.] Naval Hlth Res Ctr, San Diego, CA 92106 USA.
[Lauby, Melissa D. Hiller] Naval Special Warfare, San Diego, CA 92155 USA.
RP Schmied, EA (reprint author), Naval Hlth Res Ctr, 140 Sylvester Rd, San Diego, CA 92106 USA.
NR 55
TC 3
Z9 3
U1 1
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0887-6185
EI 1873-7897
J9 J ANXIETY DISORD
JI J. Anxiety Disord.
PD JAN
PY 2015
VL 29
BP 7
EP 13
DI 10.1016/j.janxdis.2014.10.005
PG 7
WC Psychology, Clinical; Psychiatry
SC Psychology; Psychiatry
GA CC3RC
UT WOS:000350265700003
PM 25465883
ER
PT S
AU Kim, M
Kim, CS
Bewley, WW
Merritt, CD
Canedy, CL
Abell, J
Vurgaftman, I
Meyer, JR
AF Kim, M.
Kim, C. S.
Bewley, W. W.
Merritt, C. D.
Canedy, C. L.
Abell, J.
Vurgaftman, I.
Meyer, J. R.
BE Razeghi, M
Tournie, E
Brown, GJ
TI Interband Cascade Lasers with High CW Power and Brightness
SO QUANTUM SENSING AND NANOPHOTONIC DEVICES XII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Quantum Sensing and Nanophotonic Devices XII
CY FEB 08-12, 2015
CL San Francisco, CA
SP SPIE
DE Interband cascade laser; mid-infrared; cw output power; wallplug
efficiency; high efficiency
AB We report corrugated narrow-ridge interband cascade lasers emitting at lambda approximate to 3.5 mu m that have been fabricated using CH4/Cl-2- and BCl3-based inductively coupled plasma reactive ion etch processes, with largely similar results from both types of etches. The highest brightness figure of merit was obtained at intermediate ridge width (28 mu m), for which the maximum cw output power at T = 25 degrees C was 522 mW and the corresponding wallplug efficiency and beam quality factor were 10.3% and M-2 = 3.1, respectively. The high output power may be attributed to a 7-stage design that employs thicker separate confinement layers for lower internal loss.
C1 [Kim, M.] Sotera Def Solut Inc, Columbia, MD 21046 USA.
[Kim, C. S.; Bewley, W. W.; Merritt, C. D.; Canedy, C. L.; Abell, J.; Vurgaftman, I.; Meyer, J. R.] Naval Res Lab, Code 5613, Washington, DC 20375 USA.
RP Kim, M (reprint author), Sotera Def Solut Inc, Columbia, MD 21046 USA.
EM MWIR_lasers@nrl.navy.mil
NR 17
TC 1
Z9 1
U1 1
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-1-62841-460-8
J9 PROC SPIE
PY 2015
VL 9370
AR 937029
DI 10.1117/12.2081929
PG 9
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BC1NA
UT WOS:000350275500060
ER
PT J
AU Butler, JT
Sasao, T
AF Butler, Jon T.
Sasao, Tsutomu
TI High-Speed Hardware Partition Generation
SO ACM TRANSACTIONS ON RECONFIGURABLE TECHNOLOGY AND SYSTEMS
LA English
DT Article
DE Design; Algorithms; Performance; Reconfigurable computer; set partition;
integer partition; index to partition generator; combinatorial objects;
partition tree; partition diagram
ID ALGORITHMS
AB We demonstrate circuits that generate set and integer partitions on a set S of n objects at a rate of one per clock. Partitions are ways to group elements of a set together and have been extensively studied by researchers in algorithm design and theory. We offer two versions of a hardware set partition generator. In the first, partitions are produced in lexicographical order in response to successive clock pulses. In the second, an index input determines the set partition produced. Such circuits are useful in the hardware implementation of the optimum distribution of tasks to processors. We show circuits for integer partitions as well. Our circuits are combinational. For large n, they can have a large delay. However, one can easily pipeline them to produce one partition per clock period. We show (1) analytical and (2) experimental time/complexity results that quantify the efficiency of our designs. For example, our results show that a hardware set partition generator running on a 100MHz FPGA produces partitions at a rate that is approximately 10 times the rate of a software implementation on a processor running at 2.26GHz.
C1 [Butler, Jon T.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
[Sasao, Tsutomu] Meiji Univ, Dept Comp Sci, Tama Ku, Kawasaki, Kanagawa 2148571, Japan.
RP Butler, JT (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
EM jon_butler@msn.com; sasao@cs.meiji.ac.jp
FU Japan Society for the Promotion of Science (JSPS)
FX This research is supported by a Grant-in-Aid for Scientific Research of
the Japan Society for the Promotion of Science (JSPS). This article is
an extended version of Butler and Sasao [2013b].
NR 26
TC 0
Z9 0
U1 1
U2 2
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 1936-7406
EI 1936-7414
J9 ACM T RECONFIG TECHN
JI ACM T. Reconfigurable Technol. Syst.
PD JAN
PY 2015
VL 7
IS 4
AR 28
DI 10.1145/2629472
PG 17
WC Computer Science, Hardware & Architecture
SC Computer Science
GA CC7EG
UT WOS:000350529900001
ER
PT J
AU Slokar, T
Lopez-Mariscal, C
Krek, JL
Stukelj, R
Zupanc, O
Kralj-Iglic, V
AF Slokar, Tanja
Lopez-Mariscal, Carlos
Krek, Judita Lea
Stukelj, Roman
Zupanc, Oskar
Kralj-Iglic, Veronika
TI Effect of Lidocaine and Epinephrine on Human Erythrocyte Shape and
Vesiculability of Blood Cells
SO ADVANCES IN CONDENSED MATTER PHYSICS
LA English
DT Article
ID PLATELET-DERIVED MICROPARTICLES; EXTRACELLULAR VESICLES;
PERIPHERAL-BLOOD; MECHANISM; MICROVESICLES; COMMUNICATION; STABILITY;
ACTIVATION; GENERATION; COMPONENTS
AB The effect of local anesthetic composed of lidocaine and epinephrine on vesiculability of blood cells and erythrocyte shape was studied. Whole blood and plasma were incubated with lidocaine/epinephrine. Extracellular vesicles were isolated by centrifugation and washing and counted by flow cytometry. Lidocaine/epinephrine and each component alone were added to diluted blood. Shape changes were recorded by micrographs. An ensemble of captured frames was analyzed for populations of discocytes, echinocytes, and stomatocytes by using statistical methods. Incubation of whole blood and blood plasma with lidocaine/epinephrine considerably increased concentration of extracellular vesicles in isolates (for an average factor 3.4 in blood and 2.8 in plasma). Lidocaine/epinephrine caused change of erythrocyte shape from mainly discocytic to mainly stomatocytic (higher than 50%). Lidocaine alone had even stronger stomatocytic effect (the percent of stomatocytes was higher than 95%) while epinephrine had echinocytic effect (the percent of echinocytes was higher than 80%). The differences were highly statistically significant (p < 10(-8)) with statistical power P = 1. Lidocaine/epinephrine induced regions of highly anisotropically curved regions indicating that lidocaine and epinephrine interact with erythrocyte membrane. It was concluded that lidocaine/epinephrine interacts with cell membranes and increases vesiculability of blood cells in vitro.
C1 [Slokar, Tanja; Zupanc, Oskar] Univ Ljubljana, Med Ctr, Dept Orthopaed Surg, SI-1000 Ljubljana, Slovenia.
[Lopez-Mariscal, Carlos; Krek, Judita Lea; Stukelj, Roman; Kralj-Iglic, Veronika] Univ Ljubljana, Lab Clin Biophys, Fac Hlth Sci, SI-1000 Ljubljana, Slovenia.
[Lopez-Mariscal, Carlos] US Naval Res Lab, Washington, DC 20375 USA.
RP Kralj-Iglic, V (reprint author), Univ Ljubljana, Lab Clin Biophys, Fac Hlth Sci, Zdravstvena 5, SI-1000 Ljubljana, Slovenia.
EM veronika.kralj-iglic@fe.uni-lj.si
FU ARRS [J1-6728, J3-5499, P3-0388]
FX The authors are thankful for support from ARRS Grants J1-6728, J3-5499,
and P3-0388.
NR 48
TC 0
Z9 0
U1 2
U2 4
PU HINDAWI PUBLISHING CORP
PI NEW YORK
PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA
SN 1687-8108
EI 1687-8124
J9 ADV COND MATTER PHYS
JI Adv. Condens. Matter Phys.
PY 2015
AR 870602
DI 10.1155/2015/870602
PG 10
WC Physics, Condensed Matter
SC Physics
GA CC2DD
UT WOS:000350154400001
ER
PT S
AU Bhunia, AK
Taitt, CR
Kim, MS
AF Bhunia, A. K.
Taitt, C. R.
Kim, M. S.
BE Bhunia, AK
Kim, MS
Taitt, CR
TI High throughput screening strategies and technology platforms for
detection of pathogens: an introduction
SO HIGH THROUGHPUT SCREENING FOR FOOD SAFETY ASSESSMENT: BIOSENSOR
TECHNOLOGIES, HYPERSPECTRAL IMAGING AND PRACTICAL APPLICATIONS
SE Woodhead Publishing Series in Food Science Technology and Nutrition
LA English
DT Editorial Material; Book Chapter
ID LISTERIA-MONOCYTOGENES; ESCHERICHIA-COLI; UNITED-STATES; ENRICHMENT
CULTIVATION; VIBRIO-VULNIFICUS; FOODBORNE ILLNESS; OUTBREAK; FOOD;
SALMONELLA; INFECTIONS
C1 [Bhunia, A. K.] Purdue Univ, W Lafayette, IN 47907 USA.
[Taitt, C. R.] US Naval Res Lab, Washington, DC USA.
[Kim, M. S.] ARS, USDA, Beltsville, MD USA.
RP Bhunia, AK (reprint author), Purdue Univ, W Lafayette, IN 47907 USA.
NR 36
TC 0
Z9 0
U1 1
U2 5
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2042-8049
BN 978-0-85709-807-8; 978-0-85709-801-6
J9 WOODHEAD PUBL FOOD S
JI Woodhead Publ. Food Sci. Technol. Nutr.
PY 2015
IS 262
BP 1
EP 9
DI 10.1016/B978-0-85709-801-6.00001-0
PG 9
WC Food Science & Technology
SC Food Science & Technology
GA BC0DI
UT WOS:000348925600001
ER
PT S
AU Taitt, CR
North, SH
AF Taitt, C. R.
North, S. H.
BE Bhunia, AK
Kim, MS
Taitt, CR
TI Flow cytometry and pathogen screening in foods
SO HIGH THROUGHPUT SCREENING FOR FOOD SAFETY ASSESSMENT: BIOSENSOR
TECHNOLOGIES, HYPERSPECTRAL IMAGING AND PRACTICAL APPLICATIONS
SE Woodhead Publishing Series in Food Science Technology and Nutrition
LA English
DT Article; Book Chapter
ID ESCHERICHIA-COLI O157-H7; IN-SITU HYBRIDIZATION; THROUGHPUT SUSPENSION
ARRAY; RAPID DETECTION; GROUND-BEEF; LISTERIA-MONOCYTOGENES; SIGNAL
AMPLIFICATION; SACCHAROMYCES-CEREVISIAE; ALCOHOLIC FERMENTATION;
STAPHYLOCOCCUS-AUREUS
C1 [Taitt, C. R.; North, S. H.] US Naval Res Lab, Washington, DC 20375 USA.
RP Taitt, CR (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
NR 94
TC 0
Z9 0
U1 0
U2 2
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2042-8049
BN 978-0-85709-807-8; 978-0-85709-801-6
J9 WOODHEAD PUBL FOOD S
JI Woodhead Publ. Food Sci. Technol. Nutr.
PY 2015
IS 262
BP 195
EP 218
DI 10.1016/B978-0-85709-801-6.00008-3
PG 24
WC Food Science & Technology
SC Food Science & Technology
GA BC0DI
UT WOS:000348925600008
ER
PT S
AU Taitt, CR
North, SH
AF Taitt, C. R.
North, S. H.
BE Bhunia, AK
Kim, MS
Taitt, CR
TI Total internal reflection fluorescence (TIRF) array biosensors for
biothreat agents for food safety and food defense
SO HIGH THROUGHPUT SCREENING FOR FOOD SAFETY ASSESSMENT: BIOSENSOR
TECHNOLOGIES, HYPERSPECTRAL IMAGING AND PRACTICAL APPLICATIONS
SE Woodhead Publishing Series in Food Science Technology and Nutrition
LA English
DT Article; Book Chapter
ID FIBER-OPTIC BIOSENSOR; STAPHYLOCOCCAL-ENTEROTOXIN-B; CRYSTAL ENHANCED
FLUORESCENCE; BACILLUS-ANTHRACIS SPORES; POLYMERASE-CHAIN-REACTION;
WAVE-GUIDE BIOSENSOR; RAPID DETECTION; PROTEIN MICROARRAYS; DNA
MICROARRAYS; ANTIMICROBIAL PEPTIDES
C1 [Taitt, C. R.; North, S. H.] US Naval Res Lab, Washington, DC 20375 USA.
RP Taitt, CR (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
NR 144
TC 0
Z9 0
U1 2
U2 8
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2042-8049
BN 978-0-85709-807-8; 978-0-85709-801-6
J9 WOODHEAD PUBL FOOD S
JI Woodhead Publ. Food Sci. Technol. Nutr.
PY 2015
IS 262
BP 399
EP 424
DI 10.1016/B978-0-85709-801-6.00017-4
PG 26
WC Food Science & Technology
SC Food Science & Technology
GA BC0DI
UT WOS:000348925600017
ER
PT J
AU Frank, D
Foster, D
Sou, IM
Calantoni, J
Chou, P
AF Frank, Donya
Foster, Diane
Sou, In Mei
Calantoni, Joseph
Chou, Pai
TI Lagrangian measurements of incipient motion in oscillatory flows
SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
LA English
DT Article
DE incipient motion; wave bottom boundary layer; Smart Sediment Grains;
sediment transport; nearshore processes
ID SEDIMENT TRANSPORT; SHEET FLOW; WAVES; SHELF
AB Incipient motion of coarse gravel-sized sediment was investigated under a range of oscillatory flows. This article examines the relative significance of shear stresses and pressure gradients in triggering motion, which was directly measured with electronic Smart Sediment Grains (SSGs). The data suggest that incipient motion was induced by the pressure gradients in flows with large accelerations, by the shear stresses in flows with low accelerations and greater shear, and by the combined effects in intermediate flows. A modified incipient motion criterion was evaluated accounting for the combined effects of the shear stresses and pressure gradients, which may be more widely applicable in the marine environment.
C1 [Frank, Donya] Univ New Hampshire, Ctr Ocean Engn, Durham, NH 03824 USA.
[Foster, Diane] Univ New Hampshire, Dept Mech Engn, Durham, NH 03824 USA.
[Sou, In Mei] Naval Res Lab, Stennis Space Ctr, MS USA.
[Calantoni, Joseph] Naval Res Lab, Marine Geosci Div, Stennis Space Ctr, MS USA.
[Chou, Pai] Univ Calif Irvine, Dept Elect Engn & Comp Sci, Irvine, CA USA.
EM donya.frank.ctr.jm@nrlssc.navy.mil
FU National Science Foundation [CBET-0933409, CBET-0933694]; Dissertation
Year Fellowship from the University of New Hampshire Graduate School;
National Research Council Research Associateship Program at the Naval
Research Laboratory; Office of Naval Research; Ministry of Economic
Affairs (Taiwan) [100-EC-17-A-04-S1-044]
FX This work was sponsored (in part) by the National Science Foundation
under grants CBET-0933409 and CBET-0933694. Any opinions, findings, and
conclusions or recommendations expressed in this material are those of
the authors and do not necessarily reflect the views of the National
Science Foundation. Donya Frank was partially supported by a
Dissertation Year Fellowship from the University of New Hampshire
Graduate School, and this work was conducted as a part of her Ph.D.
studies. In Mei Sou was supported as a postdoctoral fellow through the
National Research Council Research Associateship Program at the Naval
Research Laboratory. Joseph Calantoni was supported under base funding
to the Naval Research Laboratory from the Office of Naval Research. The
authors would like to acknowledge NRL staff members Timothy Kooney,
Julian Simeonov, and David Dobson, as well as UNH graduate student Emily
Carlson for their assistance with data collection and processing during
the experiment. Yu-Min Kao, who helped to develop the SSG electronics,
was supported by the Ministry of Economic Affairs (Taiwan) grant
100-EC-17-A-04-S1-044. The authors are unable to host the data publicly
at this time due to privacy and security concerns. Moreover, the data
used to produce these results were collected with Particle Image
Velocimetry techniques, which produce very large data sets and require
several weeks to process with proprietary software. The authors would be
willing to collaborate on an individual basis but are unable to make the
data publicly available at this time. Anyone wishing to collaborate
should contact the corresponding author to arrange direct data transfer.
NR 22
TC 5
Z9 5
U1 1
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9275
EI 2169-9291
J9 J GEOPHYS RES-OCEANS
JI J. Geophys. Res.-Oceans
PD JAN
PY 2015
VL 120
IS 1
BP 244
EP 256
DI 10.1002/2014JC010183
PG 13
WC Oceanography
SC Oceanography
GA CB8OP
UT WOS:000349890000015
ER
PT J
AU Share, GH
Murphy, RJ
Tylka, AJ
Dennis, BR
Ryan, JM
AF Share, Gerald H.
Murphy, Ronald J.
Tylka, Allan J.
Dennis, Brian R.
Ryan, James M.
TI Misidentification of the source of a neutron transient detected by
MESSENGER on 4 June 2011
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
DE Solar neutrons; solar energetic particles; solar flares
ID GAMMA-RAY LINES; ENERGETIC PARTICLE; SOLAR; FLARE; SPECTROMETER;
SPACECRAFT; TELESCOPE; SPECTRA; STEREO; FNIT
AB Low-energy (1-10 MeV) neutrons emanating from the Sun provide unique information about accelerated ions with steep energy spectra that may be produced in weak solar flares. However, observation of these solar neutrons can only be made in the inner heliosphere where measurement is difficult due to high background rates from neutrons produced by energetic ions interacting in the spacecraft. These ions can be from solar energetic particle events or produced in passing shocks associated with fast coronal mass ejections. Therefore, it is of the utmost importance that investigators rule out these secondary neutrons before making claims about detecting neutrons from the Sun. The MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) neutron spectrometer recorded an hour-long neutron transient beginning at 15:45 UTC on 4 June 2011 for which Lawrence et al. (2014) claim there is strong evidence that the neutrons were produced by the interaction of ions in the solar atmosphere. We studied this event in detail using data from the MESSENGER neutron spectrometer, gamma ray spectrometer, X-ray Spectrometer, and Energetic Particle Spectrometer and from the particle spectrometers on STEREO A. We demonstrate that the transient neutrons were secondaries produced by energetic ions, probably accelerated by a passing shock, that interacted in the spacecraft. We also identify significant faults with the authors' arguments in favor of a solar neutron origin for the transient.
C1 [Share, Gerald H.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[Murphy, Ronald J.] Naval Res Lab, Div Space Sci, Washington, DE USA.
[Tylka, Allan J.; Dennis, Brian R.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Ryan, James M.] Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.
RP Share, GH (reprint author), Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
EM share@astro.umd.edu
FU NSF/SHINE [1156092]
FX We thank Anne K. Tolbert for assistance in accessing and plotting
MESSENGER XRS data and Richard Starr (richard.d.starr@nasa.gov) for
explaining how to access these data and the characteristics of the XRS
instrument. All of the other data used in this paper either came from
Lawrence et al. [2014] or open sources such as the STEREO data center.
This work was funded in part by NSF/SHINE grant 1156092 and by the Chief
of Naval Research.
NR 26
TC 2
Z9 2
U1 1
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD JAN
PY 2015
VL 120
IS 1
BP 1
EP 11
DI 10.1002/2014JA020663
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA CB8OX
UT WOS:000349891300001
ER
PT J
AU Grach, SM
Sergeev, EN
Mishin, EV
Shindin, AV
McCarrick, M
AF Grach, S. M.
Sergeev, E. N.
Mishin, E. V.
Shindin, A. V.
McCarrick, M.
TI Intermediate downshifted maximum of stimulated electromagnetic emission
at high-power HF heating: A new twist on an old problem
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
DE stimulated electromagnetic emissions; HF heating experiments
ID PUMP WAVE FREQUENCY; LOWER-HYBRID WAVES; SPECTRAL FEATURES; IONOSPHERE
AB We report a new spectral feature of Stimulated Electromagnetic Emission (SEE) from the F region ionosphere observed during high-power HF heating experiments at the SURA and High Frequency Active Auroral Research Program heating facilities. It is located in the SEE spectrum between the pump wave frequency f(0) and the well-known Downshifted Maximum and thus named the Intermediate Downshifted Maximum (IDM). IDM appears at effective radiated powers (ERP) P(0)30MW and the pump frequencies above electron gyroharmonics, f0-sfce50 (up to 250)kHz (s = 2, 3, 4). It mirrors the well-known Upshifted Maximum (UM) relative to f(0). The salient stationary and dynamic properties of IDM are described and discussed.
C1 [Grach, S. M.; Sergeev, E. N.; Shindin, A. V.] Lobachevsky State Univ Nizhny Novgorod, Natl Res Univ, Niznny Novgorod, Russia.
[Sergeev, E. N.] Radiophys Res Inst, Nizhnii Novgorod, Russia.
[Mishin, E. V.] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[McCarrick, M.] Naval Res Lab, Washington, DC 20375 USA.
RP Mishin, EV (reprint author), Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
EM Evgeny.Mishin@us.af.mil
RI Shindin, Alexey/R-8728-2016;
OI Shindin, Alexey/0000-0003-1242-5666; Grach, Savely/0000-0003-1726-4793
FU Russian Foundation for Basic Research [12-02-00513, 13-02-12074];
Russian Scientific Foundation [14 12 00706]; Air Force Office of
Scientific Research
FX S.M.G., E.N.S., and A.V.S. were supported by Russian Foundation for
Basic Research, projects 12-02-00513, 13-02-12074 (Introduction and
Experimental results) and Russian Scientific Foundation (project 14 12
00706 (Discussion and Summary)). E.V.M. was supported by Air Force
Office of Scientific Research. The HAARP facility operation was provided
by U.S. Air Force and U.S. Navy. Data can be requested from S. Grach
(email: sgrach@rf.unn.ru).
NR 26
TC 4
Z9 4
U1 0
U2 6
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD JAN
PY 2015
VL 120
IS 1
BP 666
EP 674
DI 10.1002/2014JA020423
PG 9
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA CB8OX
UT WOS:000349891300043
ER
PT J
AU Ratchford, D
Yeom, J
Long, JP
Pehrsson, PE
AF Ratchford, Daniel
Yeom, Junghoon
Long, James P.
Pehrsson, Pehr. E.
TI Influence of inhomogeneous porosity on silicon nanowire Raman
enhancement and leaky mode modulated photoluminescence
SO NANOSCALE
LA English
DT Article
ID POROUS SILICON; SEMICONDUCTOR NANOWIRE; LIGHT-ABSORPTION; PHOTOVOLTAIC
APPLICATIONS; SI NANOWIRES; ARRAYS; NANOSTRUCTURES; FABRICATION;
SCATTERING; GERMANIUM
AB Metal-assisted chemical etching (MACE) offers an inexpensive, massively parallel fabrication process for producing silicon nanowires (SiNWs). These nanowires can possess a degree of porosity depending on etch conditions. Because the porosity is often spatially inhomogeneous, there is a need to better understand its nature if applications exploiting the porosity are to be pursued. Here, the resolution afforded by micro-Raman and micro-photoluminescence (PL) is used to elucidate the effects of porosity heterogeneity on the optical properties of individual SiNWs produced in large arrays with MACE, while also determining the spatial character of the heterogeneity. For highly porous SiNWs, there is a dramatic reduction in Raman signal and an increase in PL near the SiNW tips. PL spectra collected along the SiNW length exhibit peaks due to leaky mode resonances. Analysis of the PL resonance peaks, Raman spectrum line shape, SEM images, and EDS spectra indicate that the SiNWs possess both radial and axial heterogeneity wherein, from base to SiNW tip, the SiNWs comprise a shell of increasingly thick porous Si surrounding a tapering core of bulk Si. This work describes how structural porosity variation shapes SiNW optical properties, which will influence the design of new SiNW-based photonic devices and chemical/biological sensors.
C1 [Ratchford, Daniel; Yeom, Junghoon] Naval Res Lab, Natl Res Council Res Associateship Program, Washington, DC 20375 USA.
[Long, James P.; Pehrsson, Pehr. E.] Naval Res Lab, Chem Div, Washington, DC 20375 USA.
RP Pehrsson, PE (reprint author), Naval Res Lab, Chem Div, Washington, DC 20375 USA.
EM pehr.pehrsson@nrl.navy.mil
FU National Research Council Research Associateship Awards at the US Naval
Research Laboratory
FX This research was performed while DR and JY held National Research
Council Research Associateship Awards at the US Naval Research
Laboratory.
NR 51
TC 3
Z9 3
U1 4
U2 26
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 2015
VL 7
IS 9
BP 4124
EP 4133
DI 10.1039/c4nr06329e
PG 10
WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials
Science, Multidisciplinary; Physics, Applied
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CC1ZJ
UT WOS:000350143700037
PM 25666765
ER
PT S
AU Simsek, FG
Kwon, YW
AF Simsek, Fatma Gulden
Kwon, Young W.
BE Lackovic, I
Vasic, D
TI Wall Shear Stress Distribution in Aneurysm Initiation in an Idealized
Three-Layered Abdominal Aorta
SO 6TH EUROPEAN CONFERENCE OF THE INTERNATIONAL FEDERATION FOR MEDICAL AND
BIOLOGICAL ENGINEERING
SE IFMBE Proceedings
LA English
DT Proceedings Paper
CT 6th European Conference of the
International-Federation-for-Medical-and-Biological-Engineering (MBEC)
CY SEP 07-11, 2014
CL Dubrovnik, CROATIA
SP Croatian Med & Biol Engn Soc, Int Federat Med & Biol Engn, Minist Sci Educ & Sports Republ Croatia, Minist Hlth Republ Croatia, Univ Zagreb, Fac Elect Engn & Comp, European Alliance Med & Biol Engn & Sci, European Cooperat Sci & Technol
DE Fluid-structure interaction; abdominal aortic aneurysm; three-layered
wall; aneurysm initiation
ID COMPUTATIONAL MODEL; CEREBRAL ANEURYSM; GROWTH
AB Initiation of aneurysm is modeled in an idealized three-layered abdominal aorta model. Linear elastic material property is chosen for the vessel. Fluid-structure interaction between the blood and the vessel is included in the study. Physiological boundary conditions are applied at the inlet and outlet of the model. Aneurysm initiation is achieved by decreasing the Young's modulus of elasticity in a circular ring in the media of the model. Wall shear stress on the blood-vessel interface and through the vessel thickness is compared between the aneurysm initiated and healthy abdominal aorta.
C1 [Simsek, Fatma Gulden] Bogazici Univ, Inst Biomed Engn, Kandilli Campus, Istanbul, Turkey.
[Kwon, Young W.] Naval Post Grad Sch, Dept Mech & Aerosp Engn, Monterey, CA USA.
RP Simsek, FG (reprint author), Bogazici Univ, Inst Biomed Engn, Kandilli Campus, Istanbul, Turkey.
EM fatma.temiz@boun.edu.tr
NR 12
TC 0
Z9 0
U1 0
U2 1
PU SPRINGER-VERLAG BERLIN
PI BERLIN
PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY
SN 1680-0737
BN 978-3-319-11127-8
J9 IFMBE PROC
PY 2015
VL 45
BP 391
EP +
DI 10.1007/978-3-319-11128-5_98
PG 2
WC Engineering, Biomedical; Medical Informatics; Neurosciences
SC Engineering; Medical Informatics; Neurosciences & Neurology
GA BC0RY
UT WOS:000349454200098
ER
PT J
AU Moltz, JC
AF Moltz, James Clay
TI Twenty-First-Century Space Security: Conflict or Collaboration?
SO CURRENT HISTORY
LA English
DT Editorial Material
C1 Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Moltz, JC (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU CURRENT HIST INC
PI PHILADELPHIA
PA 4225 MAIN ST PO BOX 4647, PHILADELPHIA, PA 19127 USA
SN 0011-3530
EI 1944-785X
J9 CURR HIST
JI Curr. Hist.
PD JAN
PY 2015
VL 114
IS 768
BP 16
EP 22
PG 7
WC International Relations; Political Science
SC International Relations; Government & Law
GA CB6KA
UT WOS:000349734700003
ER
PT J
AU Cunha, JM
Menichini, AA
Crockett, A
AF Cunha, Jesse M.
Menichini, Amilcar A.
Crockett, Adam
TI The retention effects of high years of service cliff-vesting pension
plans
SO ECONOMICS LETTERS
LA English
DT Article
DE Retention; Cliff vesting; Retirement
AB We study the retention effects of the Australian military's decision to remove a 20-year cliff-vesting requirement from their retirement system in 1991. We follow to the present individuals who self-selected into and out of the 20-year cliff-vesting plan, as well as those who were forced out of the plan. Eliminating the high years of service cliff-vesting provision leads to consistently higher attrition over time. Published by Elsevier B.V.
C1 [Cunha, Jesse M.; Menichini, Amilcar A.] Naval Postgrad Sch, Monterey, CA 93943 USA.
[Crockett, Adam] Australian Def Force, Canberra, Australia.
RP Cunha, JM (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
EM jessecunha@gmail.com; aamenich@nps.edu; adamj.crockett@gmail.com
NR 8
TC 0
Z9 0
U1 1
U2 4
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0165-1765
EI 1873-7374
J9 ECON LETT
JI Econ. Lett.
PD JAN
PY 2015
VL 126
BP 6
EP 9
DI 10.1016/j.econlet.2014.11.005
PG 4
WC Economics
SC Business & Economics
GA CB4HA
UT WOS:000349587600002
ER
PT J
AU Connell, TL
Risha, GA
Yetter, RA
Roberts, CW
Young, G
AF Connell, Terrence L., Jr.
Risha, Grant A.
Yetter, Richard A.
Roberts, Colin W.
Young, Gregory
TI Boron and Polytetrafluoroethylene as a Fuel Composition for Hybrid
Rocket Applications
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article; Proceedings Paper
CT 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
CY JUL 14-17, 2013
CL San Jose, CA
SP AIAA, ASME, SAE, ASEE
ID METAL-FLUOROCARBON-PYROLANTS; MAGNESIUM/TEFLON/VITON MTV; COMBUSTION
BEHAVIOR; SOLID-PROPELLANTS; IGNITION; PARTICLES; FLUORINE; MAGNESIUM;
ALUMINUM; PTFE
AB A composition consisting of 80% polytetrafluoroethylene and 20% boron (by weight) was considered as a potential high-density solid fuel mixture for mixed hybrid rocket propulsive applications. Constant-pressure strand burner experiments for the given formulation indicated a low-pressure self-deflagration limit of approximately 2.2 MPa (319 psia), and a burning rate correlation r(b)[cm/s] = 0.042(P[MPa])(0.531) was determined. Pressurized counterflow burner experiments conducted using pure oxygen revealed formation of surface char, which prevented measurement of solid fuel regression rates below 2 MPa, indicating an additional resistance for heat and mass transfer. Static-fired rocket motor experiments, conducted to determine the pressure and flow dependencies of the system, exhibited characteristic exhaust velocity efficiencies ranging from approximately 86 to 96%. Whereas classical hybrids do not have a strong dependence of fuel regression rate on pressure, a pressure dependence was observed in this system below the low-pressure self-deflagration limit due to the pressure dependence of the decomposition and fluorination kinetics of the solid fuel mixture. Below the low-pressure self-deflagration limit, the motor operated at a constant pressure, typical of a classical hybrid, whereas above the limit, a progressive burn was observed, characteristic of a composite propellant. Systematic oxidizer dilution with nitrogen revealed a decrease in pressurization rate with decreasing oxygen content, and an ignition limit was achieved for this system when the oxygen mass fraction was reduced from 0.65 to 0.6. Characteristic exhaust velocity efficiencies were not noticeably affected by oxidizer dilution with nitrogen over the range considered.
C1 [Connell, Terrence L., Jr.; Yetter, Richard A.] Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA.
[Risha, Grant A.] Penn State Univ, Div Business & Engn, Altoona Coll, University Pk, PA 16802 USA.
[Roberts, Colin W.; Young, Gregory] US Naval Surface Warfare Ctr, Indian Head Div, RDT&E Dept, Indian Head, MD 20640 USA.
RP Connell, TL (reprint author), Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA.
NR 68
TC 1
Z9 1
U1 3
U2 16
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
EI 1533-3876
J9 J PROPUL POWER
JI J. Propul. Power
PD JAN-FEB
PY 2015
VL 31
IS 1
BP 373
EP 385
DI 10.2514/1.B35200
PG 13
WC Engineering, Aerospace
SC Engineering
GA CB1BS
UT WOS:000349362100031
ER
PT J
AU Young, G
Roberts, CW
Stoltz, CA
AF Young, Gregory
Roberts, Colin W.
Stoltz, Chad A.
TI Ignition and Combustion Enhancement of Boron with
Polytetrafluoroethylene
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article
ID FLUORINE; PARTICLES; MAGNESIUM; MIXTURES
AB The ignition and combustion properties of fuel-rich mixtures of boron and polytetrafluorethylene in air and argon were studied as a function of pressure at a heating rate of approximately 1 x 10(5) K/s to simulate heating rates that individual ingredients may be subjected to in propellant burning. Mixtures ranging from 20 to 100 wt% boron (balance polytetrafluorethylene) and pressures up to 7MPa were considered in this study. Ignition of the samples was achieved by joule heating of a platinum filament within a pressure vessel of selected atmospheres. Ignition of the mixture was characterized by monitoring broadband light emission, whereas boron ignition specifically was verified by identification of the BO2 molecule using emission spectroscopy. At atmospheric pressure, none of the mixtures ignited within the duration of the experiment. Mixtures containing more than 80% boron did not consistently ignite under any conditions within the duration of the experiment. It was found that the ignition temperature for all of the mixtures was a function of pressure with a reduction in ignition temperature of about 300 K when increasing the pressure from 2 to 7 MPa. At pressures greater than approximately 3.5 MPa, the ignition temperature was insensitive to mixture composition for all mixtures that ignited. The results suggest that the enhancement of boron ignition is the result of sufficient polytetrafluoroethylene decomposition products to remove the oxide layer of boron.
C1 [Young, Gregory; Roberts, Colin W.; Stoltz, Chad A.] US Naval Surface Warfare Ctr, Indian Head Div, RDT&E Dept, Indian Head, MD 20640 USA.
RP Young, G (reprint author), US Naval Surface Warfare Ctr, Indian Head Div, RDT&E Dept, Indian Head, MD 20640 USA.
EM gregory.young1@navy.mil
FU Office of Naval Research In-House Laboratory Independent Research
program at the U.S. Naval Surface Warfare Center - Indian Head Explosive
Ordnance Disposal Technology Division
FX This research effort was supported through the Office of Naval Research
In-House Laboratory Independent Research program at the U.S. Naval
Surface Warfare Center - Indian Head Explosive Ordnance Disposal
Technology Division. The authors would specifically like to thank Al
Stern, Kim Proctor for her assistance with the Microtrac measurements,
and Michael Zachariah at the University of Maryland for his assistance
in development of the temperature-jump setup.
NR 24
TC 2
Z9 3
U1 1
U2 3
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0748-4658
EI 1533-3876
J9 J PROPUL POWER
JI J. Propul. Power
PD JAN-FEB
PY 2015
VL 31
IS 1
BP 386
EP 392
DI 10.2514/1.B35390
PG 7
WC Engineering, Aerospace
SC Engineering
GA CB1BS
UT WOS:000349362100032
ER
PT J
AU Anderson, JM
Catlett, MR
Stewart, DO
AF Anderson, Jason M.
Catlett, M. Ryan
Stewart, Devin O.
TI Modeling Rotor Unsteady Forces and Sound Due to Homogeneous Turbulence
Ingestion
SO AIAA JOURNAL
LA English
DT Article
ID GRID-GENERATED TURBULENCE; INFERRING PROPELLER INFLOW; NEAR-FIELD
RESPONSE; ASYMPTOTIC THEORY; PART 2; NOISE; RADIATION; THRUST
AB An analytical approach is presented to model the broadband unsteady force cross-correlations exerted on a rotor due to a spatially homogeneous turbulent inflow. In addition, the rotor unsteady force cross-correlation matrix is treated as a set of correlated, compact dipole acoustic sources to predict the low-frequency radiated sound field of a subsonic rotor ingesting a turbulent flow. It is shown that turbulence-induced rotor forces in the radial and axial directions are uncorrelated for the special condition when spatially homogeneous turbulence is ingested, and further it is shown that radial-to-axial force correlation can exist when the turbulent inflow velocity field contains a coherent once-per-revolution variation. Equations to estimate rotor turbulence ingestion sound from noncompact dipole sources are also developed for situations when the compact acoustic assumption is invalid. A numerical simulation of the turbulence force and acoustic response for a 10-bladed rotor ingesting a spatially homogeneous turbulent inflow closely match an available experimental data set. A numerical simulation was also performed for a variation in rotor blade pitch, which indicated that radial force dipole source strength becomes nearly comparable to axial force dipole source strength when the blade-tip pitch angle reaches a value of pi/4.
C1 [Anderson, Jason M.; Catlett, M. Ryan; Stewart, Devin O.] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA.
RP Anderson, JM (reprint author), Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA.
FU Ki-Han Kim of the Office of Naval Research [N0001412WX21363]
FX The authors would like to thank Ki-Han Kim of the Office of Naval
Research for sponsorship of this work performed under contract
N0001412WX21363.
NR 17
TC 0
Z9 0
U1 0
U2 2
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
EI 1533-385X
J9 AIAA J
JI AIAA J.
PD JAN
PY 2015
VL 53
IS 1
BP 81
EP 92
DI 10.2514/1.J052874
PG 12
WC Engineering, Aerospace
SC Engineering
GA CB3VU
UT WOS:000349558100007
ER
PT J
AU Abramowski, A
Aharonian, F
Benkhali, FA
Akhperjanian, AG
Anguner, E
Anton, G
Backes, M
Balenderan, S
Balzer, A
Barnacka, A
Becherini, Y
Tjus, JB
Bernlhr, K
Birsin, E
Bissaldi, E
Biteau, J
Bottcher, M
Boisson, C
Bolmont, J
Bordas, P
Brucker, J
Brun, F
Brun, P
Bulik, T
Carrigan, S
Casanova, S
Chadwick, PM
Chalme-Calvet, R
Chaves, RCG
Cheesebrough, A
Chretien, M
Colafrancesco, S
Cologna, G
Conrad, J
Couturier, C
Cui, Y
Dalton, M
Daniel, MK
Davids, ID
Degrange, B
Deil, C
deWilt, P
Dickinson, HJ
Djannati-Atai, A
Domainko, W
Drury, LO
Dubus, G
Dutson, K
Dyks, J
Dyrda, M
Edwards, T
Egberts, K
Eger, P
Espigat, P
Farnier, C
Fegan, S
Feinstein, F
Fernandes, MV
Fernandez, D
Fiasson, A
Fontaine, G
Forster, A
Fussling, M
Gajdus, M
Gallant, YA
Garrigoux, T
Giavitto, G
Giebels, B
Glicenstein, JF
Grondin, MH
Grudzinska, M
Haffner, S
Hahn, J
Harris, J
Heinzelmann, G
Henri, G
Hermann, G
Hervet, O
Hillert, A
Hinton, JA
Hofmann, W
Hofverberg, P
Holler, M
Horns, D
Jacholkowska, A
Jahn, C
Jamrozy, M
Janiak, M
Jankowsky, F
Jung, I
Kastendieck, MA
Katarzynski, K
Katz, U
Kaufmann, S
Khelifi, B
Kieffer, M
Klepser, S
Klochkov, D
Kluzniak, W
Kneiske, T
Kolitzus, D
Komin, N
Kosack, K
Krakau, S
Krayzel, F
Kruger, PP
Laffon, H
Lamanna, G
Lefaucheur, J
Lemiere, A
Lemoine-Goumard, M
Lenain, JP
Lohse, T
Lopatin, A
Lu, CC
Marandon, V
Marcowith, A
Marx, R
Maurin, G
Maxted, N
Mayer, M
McComb, TJL
Mehault, J
Meintjes, PJ
Menzler, U
Meyer, M
Moderski, R
Mohamed, M
Moulin, E
Murach, T
Naumann, CL
de Naurois, M
Niemiec, J
Nolan, SJ
Oakes, L
Odaka, H
Ohm, S
Wilhelmi, ED
Opitz, B
Ostrowski, M
Oya, I
Panter, M
Parsons, RD
Arribas, MP
Pekeur, NW
Pelletier, G
Perez, J
Petrucci, PO
Peyaud, B
Pita, S
Poon, H
Puhlhofer, G
Punch, M
Quirrenbach, A
Raab, S
Raue, M
Reichardt, I
Reimer, A
Reimer, O
Renaud, M
de los Reyes, R
Rieger, F
Rob, L
Romoli, C
Rosier-Lees, S
Rowell, G
Rudak, B
Rulten, CB
Sahakian, V
Sanchez, DA
Santangelo, A
Schlickeiser, R
Schussler, F
Schulz, A
Schwanke, U
Schwarzburg, S
Schwemmer, S
Sol, H
Spengler, G
Spies, F
Stawarz, L
Steenkamp, R
Stegmann, C
Stinzing, F
Stycz, K
Sushch, I
Tavernet, JP
Tavernier, T
Taylor, AM
Terrier, R
Tluczykont, M
Trichard, C
Valerius, K
van Eldik, C
van Soelen, B
Vasileiadis, G
Venter, C
Viana, A
Vincent, P
Volk, HJ
Volpe, F
Vorster, M
Vuillaume, T
Wagner, SJ
Wagner, P
Wagner, RM
Ward, M
Weidinger, M
Weitzel, Q
White, R
Wierzcholska, A
Willmann, P
Wrnlein, A
Wouters, D
Yang, R
Zabalza, V
Zacharias, M
Zdziarski, AA
Zech, A
Zechlin, HS
Finke, J
Fortin, P
Horan, D
AF Abramowski, A.
Aharonian, F.
Benkhali, F. Ait
Akhperjanian, A. G.
Anguener, E.
Anton, G.
Backes, M.
Balenderan, S.
Balzer, A.
Barnacka, A.
Becherini, Y.
Tjus, J. Becker
Bernlhr, K.
Birsin, E.
Bissaldi, E.
Biteau, J.
Boettcher, M.
Boisson, C.
Bolmont, J.
Bordas, P.
Brucker, J.
Brun, F.
Brun, P.
Bulik, T.
Carrigan, S.
Casanova, S.
Chadwick, P. M.
Chalme-Calvet, R.
Chaves, R. C. G.
Cheesebrough, A.
Chretien, M.
Colafrancesco, S.
Cologna, G.
Conrad, J.
Couturier, C.
Cui, Y.
Dalton, M.
Daniel, M. K.
Davids, I. D.
Degrange, B.
Deil, C.
deWilt, P.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubus, G.
Dutson, K.
Dyks, J.
Dyrda, M.
Edwards, T.
Egberts, K.
Eger, P.
Espigat, P.
Farnier, C.
Fegan, S.
Feinstein, F.
Fernandes, M. V.
Fernandez, D.
Fiasson, A.
Fontaine, G.
Foerster, A.
Fuessling, M.
Gajdus, M.
Gallant, Y. A.
Garrigoux, T.
Giavitto, G.
Giebels, B.
Glicenstein, J. F.
Grondin, M. -H.
Grudzinska, M.
Haeffner, S.
Hahn, J.
Harris, J.
Heinzelmann, G.
Henri, G.
Hermann, G.
Hervet, O.
Hillert, A.
Hinton, J. A.
Hofmann, W.
Hofverberg, P.
Holler, M.
Horns, D.
Jacholkowska, A.
Jahn, C.
Jamrozy, M.
Janiak, M.
Jankowsky, F.
Jung, I.
Kastendieck, M. A.
Katarzynski, K.
Katz, U.
Kaufmann, S.
Khelifi, B.
Kieffer, M.
Klepser, S.
Klochkov, D.
Kluzniak, W.
Kneiske, T.
Kolitzus, D.
Komin, Nu.
Kosack, K.
Krakau, S.
Krayzel, F.
Krueger, P. P.
Laffon, H.
Lamanna, G.
Lefaucheur, J.
Lemiere, A.
Lemoine-Goumard, M.
Lenain, J. -P.
Lohse, T.
Lopatin, A.
Lu, C. -C.
Marandon, V.
Marcowith, A.
Marx, R.
Maurin, G.
Maxted, N.
Mayer, M.
McComb, T. J. L.
Mehault, J.
Meintjes, P. J.
Menzler, U.
Meyer, M.
Moderski, R.
Mohamed, M.
Moulin, E.
Murach, T.
Naumann, C. L.
de Naurois, M.
Niemiec, J.
Nolan, S. J.
Oakes, L.
Odaka, H.
Ohm, S.
Wilhelmi, E. de Ona
Opitz, B.
Ostrowski, M.
Oya, I.
Panter, M.
Parsons, R. D.
Arribas, M. Paz
Pekeur, N. W.
Pelletier, G.
Perez, J.
Petrucci, P. -O.
Peyaud, B.
Pita, S.
Poon, H.
Puehlhofer, G.
Punch, M.
Quirrenbach, A.
Raab, S.
Raue, M.
Reichardt, I.
Reimer, A.
Reimer, O.
Renaud, M.
de los Reyes, R.
Rieger, F.
Rob, L.
Romoli, C.
Rosier-Lees, S.
Rowell, G.
Rudak, B.
Rulten, C. B.
Sahakian, V.
Sanchez, D. A.
Santangelo, A.
Schlickeiser, R.
Schuessler, F.
Schulz, A.
Schwanke, U.
Schwarzburg, S.
Schwemmer, S.
Sol, H.
Spengler, G.
Spies, F.
Stawarz, L.
Steenkamp, R.
Stegmann, C.
Stinzing, F.
Stycz, K.
Sushch, I.
Tavernet, J. -P.
Tavernier, T.
Taylor, A. M.
Terrier, R.
Tluczykont, M.
Trichard, C.
Valerius, K.
van Eldik, C.
van Soelen, B.
Vasileiadis, G.
Venter, C.
Viana, A.
Vincent, P.
Voelk, H. J.
Volpe, F.
Vorster, M.
Vuillaume, T.
Wagner, S. J.
Wagner, P.
Wagner, R. M.
Ward, M.
Weidinger, M.
Weitzel, Q.
White, R.
Wierzcholska, A.
Willmann, P.
Wrnlein, A.
Wouters, D.
Yang, R.
Zabalza, V.
Zacharias, M.
Zdziarski, A. A.
Zech, A.
Zechlin, H. -S.
Finke, J.
Fortin, P.
Horan, D.
CA HESS Collaboration
TI The high-energy gamma-ray emission of AP Librae
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE galaxies: active; BL Lacertae objects: individual: AP Librae; gamma
rays: galaxies
ID LARGE-AREA TELESCOPE; ACTIVE GALACTIC NUCLEI; BL-LACERTAE OBJECTS;
EXTRAGALACTIC BACKGROUND LIGHT; SOURCE PKS 1514-24; MULTIWAVELENGTH
OBSERVATIONS; CRAB-NEBULA; SOURCE LIST; VARIABILITY; DISCOVERY
AB The gamma-ray spectrum of the low-frequency-peaked BL Lac (LBL) object AP Librae is studied, following the discovery of very-high-energy (VHE; E > 100 GeV) gamma-ray emission up to the TeV range by the H.E.S.S. experiment. Thismakes AP Librae one of the few VHE emitters of the LBL type. The measured spectrum yields a flux of (8.8 +/- 1.5(stat) +/- 1.8(sys)) x 10(-12) cm(-2) s(-1) above 130 GeV and a spectral index of Gamma = 2.65 +/- 0.19(stat) +/- 0.20(sys). This study also makes use of Fermi-LAT observations in the high energy (HE, E > 100 MeV) range, providing the longest continuous light curve (5 years) ever published on this source. The source underwent a flaring event between MJD 56 306-56 376 in the HE range, with a flux increase of a factor of 3.5 in the 14 day bin light curve and no significant variation in spectral shape with respect to the low-flux state. While the H.E.S.S. and (low state) Fermi-LAT fluxes are in good agreement where they overlap, a spectral curvature between the steep VHE spectrum and the Fermi-LAT spectrum is observed. The maximum of the gamma-ray emission in the spectral energy distribution is located below the GeV energy range.
C1 [Abramowski, A.; Fernandes, M. V.; Heinzelmann, G.; Horns, D.; Kastendieck, M. A.; Opitz, B.; Raue, M.; Spies, F.] Univ Hamburg, Inst Experimentalphys, D-22761 Hamburg, Germany.
[Aharonian, F.; Benkhali, F. Ait; Bernlhr, K.; Brun, F.; Carrigan, S.; Casanova, S.; Deil, C.; Domainko, W.; Edwards, T.; Eger, P.; Foerster, A.; Grondin, M. -H.; Hahn, J.; Hermann, G.; Hillert, A.; Hofmann, W.; Hofverberg, P.; Krueger, P. P.; Lu, C. -C.; Marandon, V.; Marx, R.; Odaka, H.; Wilhelmi, E. de Ona; Panter, M.; Parsons, R. D.; Poon, H.; de los Reyes, R.; Rieger, F.; Viana, A.; Voelk, H. J.; Volpe, F.; Weitzel, Q.; Yang, R.; Zabalza, V.] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany.
[Aharonian, F.; Drury, L. O'C.; Romoli, C.; Taylor, A. M.] Dublin Inst Adv Studies, Dublin 4, Ireland.
[Aharonian, F.; Akhperjanian, A. G.; Sahakian, V.] Natl Acad Sci Republ Armenia, Yerevan, Armenia.
[Akhperjanian, A. G.; Sahakian, V.] Yerevan Phys Inst, Yerevan 375036, Armenia.
[Anguener, E.; Bernlhr, K.; Birsin, E.; Gajdus, M.; Lohse, T.; Murach, T.; Oakes, L.; Oya, I.; Schwanke, U.; Spengler, G.; Sushch, I.; Wagner, P.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Anton, G.; Brucker, J.; Haeffner, S.; Jahn, C.; Jung, I.; Katz, U.; Lopatin, A.; Raab, S.; Stinzing, F.; Valerius, K.; van Eldik, C.; Willmann, P.; Wrnlein, A.] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany.
[Backes, M.; Davids, I. D.; Steenkamp, R.] Univ Namibia, Dept Phys, Windhoek, Namibia.
[Balenderan, S.; Chadwick, P. M.; Cheesebrough, A.; Daniel, M. K.; Harris, J.; McComb, T. J. L.; Nolan, S. J.; Ward, M.] Univ Durham, Dept Phys, Durham DH1 3LE, England.
[Balzer, A.; Giavitto, G.; Klepser, S.; Schulz, A.; Stegmann, C.; Stycz, K.] DESY, D-15738 Zeuthen, Germany.
[Balzer, A.; Fuessling, M.; Holler, M.; Mayer, M.; Stegmann, C.] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany.
[Barnacka, A.; Becherini, Y.; Dyks, J.; Janiak, M.; Kluzniak, W.; Moderski, R.; Rudak, B.; Zdziarski, A. A.] Nicolaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland.
[Becherini, Y.] Linnaeus Univ, Dept Phys & Elect Engn, S-35195 Vaxjo, Sweden.
[Tjus, J. Becker; Krakau, S.; Menzler, U.; Schlickeiser, R.; Weidinger, M.] Ruhr Univ Bochum, Inst Theoret Phys, D-44780 Bochum, Germany.
[Bissaldi, E.; Egberts, K.; Kolitzus, D.; Perez, J.; Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.
[Biteau, J.; Degrange, B.; Fegan, S.; Fontaine, G.; Giebels, B.; de Naurois, M.; Horan, D.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France.
[Biteau, J.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA.
[Boettcher, M.; Casanova, S.; Davids, I. D.; Krueger, P. P.; Pekeur, N. W.; Sushch, I.; Venter, C.; Vorster, M.] North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.
[Boisson, C.; Hervet, O.; Rulten, C. B.; Sol, H.; Zech, A.] Univ Paris Diderot, CNRS, Observ Paris, LUTH, F-92190 Meudon, France.
[Bolmont, J.; Chalme-Calvet, R.; Chretien, M.; Couturier, C.; Garrigoux, T.; Jacholkowska, A.; Kieffer, M.; Lenain, J. -P.; Naumann, C. L.; Tavernet, J. -P.; Vincent, P.] Univ Paris 07, Univ Paris 06, LPNHE, CNRS,IN2P3, F-75252 Paris, France.
[Bordas, P.; Cui, Y.; Klochkov, D.; Puehlhofer, G.; Santangelo, A.; Schwarzburg, S.] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany.
[Brun, P.; Chaves, R. C. G.; Glicenstein, J. F.; Kosack, K.; Moulin, E.; Peyaud, B.; Schuessler, F.] CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France.
[Bulik, T.; Grudzinska, M.; Zabalza, V.] Univ Warsaw, Astron Observ, PL-00478 Warsaw, Poland.
[Colafrancesco, S.] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa.
[Cologna, G.; Grondin, M. -H.; Jankowsky, F.; Kaufmann, S.; Mohamed, M.; Quirrenbach, A.; Schwemmer, S.; Wagner, S. J.; Zacharias, M.] Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany.
[Conrad, J.; Dickinson, H. J.; Farnier, C.; Meyer, M.; Wagner, R. M.] Stockholm Univ, Oskar Klein Ctr, Albanova Univ Ctr, Dept Phys, S-10691 Stockholm, Sweden.
[Dalton, M.; Laffon, H.; Lemoine-Goumard, M.; Mehault, J.] Univ Bordeaux 1, Ctr Etudes Nucl Bordeaux Gradignan, CNRS, IN2P3, F-33175 Gradignan, France.
[deWilt, P.; Maxted, N.; Rowell, G.] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia.
[Djannati-Atai, A.; Espigat, P.; Khelifi, B.; Lefaucheur, J.; Lemiere, A.; Pita, S.; Punch, M.; Reichardt, I.; Tavernier, T.; Terrier, R.] Univ Paris Diderot, Observ Paris, Sorbonne Paris Cite, CNRS,IN2P3,CEA Irfu,APC, F-75205 Paris 13, France.
[Dubus, G.; Henri, G.; Pelletier, G.; Petrucci, P. -O.; Vuillaume, T.] UJF Grenoble 1, CNRS INSU, Inst Planetol & Astrophys Grenoble, UMR 5274, F-38041 Grenoble, France.
[Dutson, K.; Hinton, J. A.; Ohm, S.; White, R.] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England.
[Dyrda, M.; Niemiec, J.] Inst Fizyki Jadrowej PAN, PL-31342 Krakow, Poland.
[Feinstein, F.; Fernandez, D.; Gallant, Y. A.; Marcowith, A.; Renaud, M.; Vasileiadis, G.] Univ Montpellier 2, CNRS, Lab Univers & Particules Montpellier, IN2P3, F-34095 Montpellier 5, France.
[Fiasson, A.; Komin, Nu.; Krayzel, F.; Lamanna, G.; Maurin, G.; Rosier-Lees, S.; Sanchez, D. A.; Trichard, C.] Univ Savoie, CNRS, Lab Annecy Le Vieux Phys Particules, IN2P3, F-74941 Annecy Le Vieux, France.
[Jamrozy, M.; Ostrowski, M.; Stawarz, L.; Wierzcholska, A.] Uniwersytet Jagiello, Obserwatorium Astron, PL-30244 Krakow, Poland.
[Katarzynski, K.] Nicholas Copernicus Univ, Torun Ctr Astron, PL-87100 Torun, Poland.
[Meintjes, P. J.; van Soelen, B.] Univ Free State, Dept Phys, ZA-9300 Bloemfontein, South Africa.
[Rob, L.] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, CR-18000 Prague 8, Czech Republic.
[Finke, J.] US Naval Res Lab, Washington, DC 20375 USA.
[Fortin, P.] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA.
RP Biteau, J (reprint author), Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France.
EM biteau@in2p3.fr; david.sanchez@lapp.in2p3.fr; pafortin@cfa.harvard.edu
RI Katarzynski, Krzysztof/G-4528-2014; Schussler, Fabian/G-5313-2013;
Jamrozy, Marek/F-4507-2015; Katz, Uli/E-1925-2013; Casanova,
Sabrina/J-8935-2013; Anton, Gisela/C-4840-2013; Reimer,
Olaf/A-3117-2013; van Eldik, Christopher/C-3901-2013; Tjus,
Julia/G-8145-2012; Meyer, Manuel/E-2697-2016; Bissaldi,
Elisabetta/K-7911-2016; Backes, Michael/N-5126-2016; Reichardt,
Ignasi/P-7478-2016; Moulin, Emmanuel/B-5959-2017; Daniel,
Michael/A-2903-2010; Komin, Nukri/J-6781-2015
OI Schussler, Fabian/0000-0003-1500-6571; Katz, Uli/0000-0002-7063-4418;
Casanova, Sabrina/0000-0002-6144-9122; Anton,
Gisela/0000-0003-2039-4724; Reimer, Olaf/0000-0001-6953-1385; van Eldik,
Christopher/0000-0001-9669-645X; Meyer, Manuel/0000-0002-0738-7581;
Bissaldi, Elisabetta/0000-0001-9935-8106; Backes,
Michael/0000-0002-9326-6400; Reichardt, Ignasi/0000-0003-3694-3820;
Moulin, Emmanuel/0000-0003-4007-0145; Chadwick,
Paula/0000-0002-1468-2685; Kneiske, Tanja M./0000-0002-3210-6200;
Daniel, Michael/0000-0002-8053-7910; de los Reyes Lopez,
Raquel/0000-0003-0485-9552; Komin, Nukri/0000-0003-3280-0582
FU German Ministry for Education and Research (BMBF); Max Planck Society;
French Ministry for Research; Astroparticle Interdisciplinary Programme
of the CNRS [CNRS-IN2P3]; UK. Particle Physics and Astronomy Research
Council (PPARC); IPNP of the Charles University; South African
Department of Science and Technology; National Research Foundation;
University of Namibia; INAF in Italy; CNES in France; Fermi LAT
FX The support of the Namibian authorities and of the University of Namibia
in facilitating the construction and operation of H.E.S.S. is gratefully
acknowledged, as is the support by the German Ministry for Education and
Research (BMBF), the Max Planck Society, the French Ministry for
Research, the CNRS-IN2P3 and the Astroparticle Interdisciplinary
Programme of the CNRS, the UK. Particle Physics and Astronomy Research
Council (PPARC), the IPNP of the Charles University, the South African
Department of Science and Technology and National Research Foundation,
and by the University of Namibia. We appreciate the excellent work of
the technical support staff in Berlin, Durham, Hamburg, Heidelberg,
Palaiseau, Paris, Saclay, and in Namibia in the construction and
operation of the equipment. The Fermi LAT Collaboration acknowledges
support from a number of agencies and institutes for both development
and the operation of the LAT as well as scientific data analysis. These
include NASA and DOE in the United States, CEA/Irfu and IN2P3/CNRS in
France, ASI and INFN in Italy, MEXT, KEK, and JAXA in Japan, and the
K.A. Wallenberg Foundation, the Swedish Research Council and the
National Space Board in Sweden. Additional support from INAF in Italy
and CNES in France for science analysis during the operations phase is
also gratefully acknowledged. The authors want to acknowledge the
anonymous referee for his/her help that greatly improved the paper.
NR 60
TC 4
Z9 4
U1 4
U2 15
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
EI 1432-0746
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD JAN
PY 2015
VL 573
AR A31
DI 10.1051/0004-6361/201321436
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AX4KJ
UT WOS:000346901300001
ER
PT J
AU Reid, JS
Lagrosas, ND
Jonsson, HH
Reid, EA
Sessions, WR
Simpas, JB
Uy, SN
Boyd, TJ
Atwood, SA
Blake, DR
Campbell, JR
Cliff, SS
Holben, BN
Holz, RE
Hyer, EJ
Lynch, P
Meinardi, S
Posselt, DJ
Richardson, KA
Salinas, SV
Smirnov, A
Wang, Q
Yu, L
Zhang, J
AF Reid, J. S.
Lagrosas, N. D.
Jonsson, H. H.
Reid, E. A.
Sessions, W. R.
Simpas, J. B.
Uy, S. N.
Boyd, T. J.
Atwood, S. A.
Blake, D. R.
Campbell, J. R.
Cliff, S. S.
Holben, B. N.
Holz, R. E.
Hyer, E. J.
Lynch, P.
Meinardi, S.
Posselt, D. J.
Richardson, K. A.
Salinas, S. V.
Smirnov, A.
Wang, Q.
Yu, L.
Zhang, J.
TI Observations of the temporal variability in aerosol properties and their
relationships to meteorology in the summer monsoonal South China
Sea/East Sea: the scale-dependent role of monsoonal flows, the
Madden-Julian Oscillation, tropical cyclones, squall lines and cold
pools
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID MARITIME CONTINENT; MICROBURST ACTIVITY; OPTICAL-PROPERTIES;
UNITED-STATES; HAZE EPISODE; TRADE-WIND; SMOKE; TRANSPORT; INDONESIA;
RAINFALL
AB In a joint NRL/Manila Observatory mission, as part of the Seven SouthEast Asian Studies program (7-SEAS), a 2-week, late September 2011 research cruise in the northern Palawan archipelago was undertaken to observe the nature of southwest monsoonal aerosol particles in the South China Sea/East Sea (SCS/ES) and Sulu Sea region. Previous analyses suggested this region as a receptor for biomass burning from Borneo and Sumatra for boundary layer air entering the monsoonal trough. Anthropogenic pollution and biofuel emissions are also ubiquitous, as is heavy shipping traffic. Here, we provide an overview of the regional environment during the cruise, a time series of key aerosol and meteorological parameters, and their interrelationships. Overall, this cruise provides a narrative of the processes that control regional aerosol loadings and their possible feedbacks with clouds and precipitation. While 2011 was a moderate El Nino-Southern Oscillation (ENSO) La Nina year, higher burning activity and lower precipitation was more typical of neutral conditions. The large-scale aerosol environment was modulated by the Madden-Julian Oscillation (MJO) and its associated tropical cyclone (TC) activity in a manner consistent with the conceptual analysis performed by Reid et al. (2012). Advancement of the MJO from phase 3 to 6 with accompanying cyclogenesis during the cruise period strengthened flow patterns in the SCS/ES that modulated aerosol life cycle. TC inflow arms of significant convection sometimes span from Sumatra to Luzon, resulting in very low particle concentrations (minimum condensation nuclei CN< 150 cm(-3), non-sea-salt PM2.5 < 1 mu g m(-3)). However, elevated carbon monoxide levels were occasionally observed suggesting passage of polluted air masses whose aerosol particles had been rained out. Conversely, two drier periods occurred with higher aerosol particle concentrations originating from Borneo and Southern Sumatra (CN > 3000 cm(-3) and non-sea-salt PM2.5 10-25 mu g m(-3)). These cases corresponded with two different mechanisms of convection suppression: lower free-tropospheric dry-air intrusion from the Indian Ocean, and large-scale TC-induced subsidence. Veering vertical wind shear also resulted in aerosol transport into this region being mainly in the marine boundary layer (MBL), although lower free troposphere transport was possible on the western sides of Sumatra and Borneo. At the hourly time scale, particle concentrations were observed to be modulated by integer factors through convection and associated cold pools. Geostationary satellite observations suggest that convection often takes the form of squall lines, which are bowed up to 500 km across the monsoonal flow and 50 km wide. These squall lines, initiated by cold pools from large thunderstorms and likely sustained by a veering vertical wind shear and aforementioned mid-troposphere dry layers, propagated over 1500 km across the entirety of the SCS/ES, effectively cutting large swaths of MBL aerosol particles out of the region. Our conclusion is that while large-scale flow patterns are very important in modulating convection, and hence in allowing long-range transport of smoke and pollution, more short-lived phenomena can modulate cloud condensation nuclei (CCN) concentrations in the region, resulting in pockets of clean and polluted MBL air. This will no doubt complicate large scale comparisons of aerosol-cloud interaction.
C1 [Reid, J. S.; Reid, E. A.; Campbell, J. R.; Hyer, E. J.; Richardson, K. A.] Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
[Lagrosas, N. D.; Simpas, J. B.; Uy, S. N.] Manila Observ, Quezon City, Philippines.
[Jonsson, H. H.; Wang, Q.] Naval Postgrad Sch, Dept Meteorol, Monterey, CA USA.
[Sessions, W. R.] Naval Res Lab, CSC, Monterey, CA USA.
[Boyd, T. J.] Naval Res Lab, Biogeochem Sect, Washington, DC USA.
[Atwood, S. A.] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA.
[Blake, D. R.; Meinardi, S.] Univ Calif Irvine, Dept Chem, Irvine, CA 92717 USA.
[Cliff, S. S.] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA.
[Holben, B. N.] NASA, Goddard Space Flight Ctr, Biospher Sci Lab, Greenbelt, MD USA.
[Holz, R. E.] Univ Wisconsin, Space Sci Engn Ctr, Madison, WI USA.
[Lynch, P.] Naval Res Lab, CSC Inc, Monterey, CA USA.
[Posselt, D. J.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
[Salinas, S. V.] Natl Univ Singapore, Ctr Remote Imaging Sensing & Proc, Singapore 117548, Singapore.
[Smirnov, A.] Sci Syst & Applicat Inc, Lanham, MD USA.
[Yu, L.] Natl Univ Singapore, Dept Civil & & Environm Engn, Singapore 117548, Singapore.
[Zhang, J.] Univ N Dakota, Dept Meteorol, Grand Forks, ND 58201 USA.
RP Reid, JS (reprint author), Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
EM jeffrey.reid@nrlmry.navy.mil
RI Hyer, Edward/E-7734-2011; Campbell, James/C-4884-2012; Yu,
Liya/H-2573-2013; Posselt, Derek/I-4912-2012; Reid, Jeffrey/B-7633-2014
OI Hyer, Edward/0000-0001-8636-2026; Campbell, James/0000-0003-0251-4550;
Yu, Liya/0000-0001-9182-6593; Posselt, Derek/0000-0002-5670-5822; Reid,
Jeffrey/0000-0002-5147-7955
FU NRL Base Program; ONR [35, 38]; NASA on behalf of MPLNET [NNG13HH10I];
SEAC4RS Science Team
FX Organization of this research cruise and associated land base
collections required the assistance of a number of organizations,
including the staff of the Office of Naval Research-Global program
office and reservist unit (esp. J. Johnson, B. McBride, P. Marshall),
the Manila Observatory (esp. A. Loyzaga and Fr. D. McNamara), US State
Department/Embassy in Manila (esp. M. T. Villa and D. Saulys), and the
Naval Postgraduate School (esp. R. Lind). We are most grateful to the
Vasco ship management and crew, managed by Cosmix Underwater Research
Ltd, (esp. L. Heymans and A. du Parc). We are also grateful to the host
institutions for regional AERONET site deployment and the use of derived
optical thickness data herein. Conversations with and guidance from C.
Sampson (NRL) on regional tropical cyclone behavior are gratefully
acknowledged. Figure construction was also assisted by C. Curtis (NRL)
and R. Johnson (UND). Funding for this research cruise and analysis was
provided from a number of sources. Vasco time procurement was provided
by the NRL 6.1 Base Program via an ONR Global grant to the Manila
Observatory. Funding for NRL scientist deployment and instrument
analysis was provided by the NRL Base Program and ONR 35. Remote sensing
and model analysis was provided by the NASA Interdisciplinary Science
Program. Reservist support was provided by ONR Program 38. The AERONET
deployments were supported by the NASA Radiation Science Program. Gas
chemistry was provided by the NASA Tropospheric Chemistry Program.
Author J. R. Campbell acknowledges the support of NASA Interagency
Agreement NNG13HH10I on behalf of MPLNET and the SEAC4RS
Science Team.
NR 82
TC 6
Z9 6
U1 7
U2 57
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 2015
VL 15
IS 4
BP 1745
EP 1768
DI 10.5194/acp-15-1745-2015
PG 24
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CB7IP
UT WOS:000349800500011
ER
PT J
AU Campbell, JR
Vaughan, MA
Oo, M
Holz, RE
Lewis, JR
Welton, EJ
AF Campbell, J. R.
Vaughan, M. A.
Oo, M.
Holz, R. E.
Lewis, J. R.
Welton, E. J.
TI Distinguishing cirrus cloud presence in autonomous lidar measurements
SO ATMOSPHERIC MEASUREMENT TECHNIQUES
LA English
DT Article
ID TRANSITION LAYER CIRRUS; RADIATIVE PROPERTIES; CLIMATE; ALGORITHM; ICE;
AEROSOLS; FACILITY; MISSION
AB 2012 Level-2 Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) satellite-based cloud data sets are investigated for thresholds that distinguish the presence of cirrus clouds in autonomous lidar measurements, based on temperatures, heights, optical depth and phase. A thermal threshold, proposed by Sassen and Campbell (2001) for cloud top temperature T-top <= -37 degrees C, is evaluated versus CALIOP algorithms that identify ice-phase cloud layers using polarized backscatter measurements. Derived global mean cloud top heights (11.15 vs. 10.07 km above mean sea level; a.m.s.l.), base heights (8.76 km a.m.s.l. vs. 7.95 km a.m.s.l.), temperatures (-58.48 degrees C vs. -52.18 degrees C and -42.40 degrees C vs. -38.13 degrees C, respectively, for tops and bases) and optical depths (1.18 vs. 1.23) reflect the sensitivity to this constraint. Over 99% of all T-top <= -37 degrees C clouds are classified as ice by CALIOP Level-2 algorithms. Over 81% of all ice clouds correspond with T-top <= -37 degrees C. For instruments lacking polarized measurements, and thus practical estimates of phase, T-top <= -37 degrees C provides sufficient justification for distinguishing cirrus, as opposed to the risks of glaciated liquid-water cloud contamination occurring in a given sample from clouds identified at relatively "warm" (T-top > -37 degrees C) temperatures. Although accounting for uncertainties in temperatures collocated with lidar data (i.e., model reanalyses/sondes) may justifiably relax the threshold to include warmer cases, the ambiguity of "warm" ice clouds cannot be fully reconciled with available measurements, conspicuously including phase. Cloud top heights and optical depths are investigated, and global distributions and frequencies derived, as functions of CALIOP-retrieved phase. These data provide little additional information, compared with temperature alone, and may exacerbate classification uncertainties overall.
C1 [Campbell, J. R.] Naval Res Lab, Monterey, CA 93943 USA.
[Vaughan, M. A.] NASA, Langley Res Ctr, Hampton, VA 23665 USA.
[Oo, M.; Holz, R. E.] Univ Wisconsin, Ctr Space Sci & Engn, Madison, WI 53706 USA.
[Lewis, J. R.] Univ Maryland Baltimore Cty, Joint Ctr Earth Syst Technol, Baltimore, MD 21228 USA.
[Welton, E. J.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
RP Campbell, JR (reprint author), Naval Res Lab, Monterey, CA 93943 USA.
EM james.campbell@nrlmry.navy.mil
RI Campbell, James/C-4884-2012
OI Campbell, James/0000-0003-0251-4550
FU NASA Radiation Sciences Program [NNG13HH10I]; Oceanographer of the Navy
through the Program Office at PEO [N2/N6E, C4I PMW-120]
FX This research was conducted through NASA Interagency Agreement
NNG13HH10I on behalf of the NASA Micropulse Lidar Network, which itself
is supported by the NASA Radiation Sciences Program (H. Maring). Authors
M. Oo and R. E. Holz acknowledge support from the Oceanographer of the
Navy (N2/N6E) through the Program Office at PEO C4I PMW-120.
NR 47
TC 8
Z9 8
U1 3
U2 9
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 2015
VL 8
IS 1
BP 435
EP 449
DI 10.5194/amt-8-435-2015
PG 15
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CA5WD
UT WOS:000348977600032
ER
PT J
AU Gould, BD
Rodgers, JA
Schuette, M
Bethune, K
Louis, S
Rocheleau, R
Swider-Lyons, K
AF Gould, Benjamin D.
Rodgers, Joseph A.
Schuette, Michael
Bethune, Keith
Louis, Shaquille
Rocheleau, Richard
Swider-Lyons, Karen
TI Performance and Limitations of 3D-Printed Bipolar Plates in Fuel Cells
SO ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
LA English
DT Article
ID STACKS
AB 3D-printing is being touted as a tool for prototyping and manufacturing metal fuel cell bipolar plate (BPP) designs as it may speed development and lower costs by avoiding costly tooling, plus the 3D parts can be made as a single piece without welding. We use the 3D-printing method of direct metal laser sintering (DMLS) to make 21 cm(2) titanium-alloy BPPs with embedded flow channels. To minimize the contact resistance in an individual cell, the surface of each BPP is polished to the appropriate roughness and coated with a conductive corrosion barrier. The coated BPPs are assembled with the appropriate seals, catalyst coated membranes and gas diffusion layers into both a single-cell and a 40-cell stack and tested. The single-cell stack performs well compared to a standard, but the 40-cell fuel cell stack power is 400 W, or 20% less than expected due to inadequate flatness of several of the DMLS BPPs. This cell-to-cell mismatch leads to high contact resistance in several of the cells. DMLS clearly shows the benefit of being able to make complex flow fields and hollow parts with no welds and is useful for prototyping flow fields in single cells or short stacks. More work is needed toward reducing the weight and increasing the flatness of BPPs made by DMLS before they can be used in larger stacks. (C) The Author(s) 2015. Published by ECS. All rights reserved.
C1 [Gould, Benjamin D.; Rodgers, Joseph A.; Louis, Shaquille; Swider-Lyons, Karen] US Naval Res Lab, Washington, DC 20375 USA.
[Schuette, Michael] Sotera Def Solut Inc, Columbia, MD 21046 USA.
[Bethune, Keith; Rocheleau, Richard] Univ Hawaii, Hawaii Nat Energy Inst, Honolulu, HI 96822 USA.
RP Gould, BD (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
EM benjamin.gould@nrl.navy.mil
FU Office of Naval Research
FX The authors thank the Office of Naval Research for financial support of
this work.
NR 21
TC 1
Z9 1
U1 8
U2 31
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 2015
VL 4
IS 4
SI SI
BP P3063
EP P3068
DI 10.1149/2.0091504jss
PG 6
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA CB3TA
UT WOS:000349550300010
ER
PT J
AU Zhuang, X
Sing, MLC
Dolabdjian, C
Wang, YJ
Finkel, P
Li, JF
Viehland, D
AF Zhuang, Xin
Sing, Marc Lam Chok
Dolabdjian, Christophe
Wang, Yaojin
Finkel, Peter
Li, Jiefang
Viehland, Dwight
TI Sensitivity and Noise Evaluation of a Bonded Magneto(elasto) Electric
Laminated Sensor Based on In-Plane Magnetocapacitance Effect for
Quasi-Static Magnetic Field Sensing
SO IEEE TRANSACTIONS ON MAGNETICS
LA English
DT Article
DE Magnetic noise; magnetoelectric; modulation
AB The quasi-static magnetic field detection of a layer-bonded magneto(elasto) electric (ME) laminate has been investigated by measuring the in-plane electric capacitance via its interdigital electrodes close to the piezoelectric resonant frequency. The ME-layered composite is considered as a stress-induced dielectric effect because there is practically no direct response of the electric capacitance to an external magnetic field. The sensitivity is dominated by the magnetoelastic coupling in the magnetic layer and on the stress induced by the permittivity change in the piezoelectric layer. The low-frequency magnetocapacitance effect is sensitive to an external magnetic bias which can modulate the electric permittivity by producing a stress. The magnetoelastic coupling is another important parameter for this magnetic field detection mode. For a given magnetic field, the amplitude of the magnetostriction is directly related to this parameter as well. Therefore, an optimal magnetic bias can maximize the induced strain or stress which is coupled into the piezoelectric layer through the change of the electric permittivity in this layer. To evaluate the sensitivity and the noise performance by the magnetocapacitance effect, we have used the piezoelectric and magnetic constitutive equations to predict the permittivity dependence. Experimentally, this sensor achieved an equivalent magnetic noise spectral density, presently still limited, by the noise of the detection electronics, similar to 100 pT/root Hz at 1 Hz and offered a dc detection capability. With the model and experimental nonlinear factors, an equivalent sensor noise spectral density close to the pT/root Hz can be ultimately predicted considering the mechanical loss limitation of the sensor.
C1 [Zhuang, Xin; Sing, Marc Lam Chok; Dolabdjian, Christophe] Normandie Univ, F-14032 Caen, France.
[Zhuang, Xin; Sing, Marc Lam Chok; Dolabdjian, Christophe] Univ Caen Basse Normandie, GREYC Lab, F-14032 Caen, France.
[Zhuang, Xin; Sing, Marc Lam Chok; Dolabdjian, Christophe] CNRS, F-14032 Caen, France.
[Wang, Yaojin; Li, Jiefang; Viehland, Dwight] Virginia Polytech Inst & State Univ, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA.
[Finkel, Peter] US Naval Res Lab, Washington, DC 20375 USA.
RP Zhuang, X (reprint author), Normandie Univ, F-14032 Caen, France.
EM xzhuang11@yahoo.fr
RI Wang, Yaojin/F-3748-2012
OI Wang, Yaojin/0000-0003-2561-1855
FU Office of Naval Research Global
FX This work was supported by the Office of Naval Research Global.
NR 17
TC 3
Z9 3
U1 7
U2 34
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9464
EI 1941-0069
J9 IEEE T MAGN
JI IEEE Trans. Magn.
PD JAN
PY 2015
VL 51
IS 1
AR 2500204
DI 10.1109/TMAG.2014.2356852
PN 1
PG 4
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA CB2HD
UT WOS:000349446800013
ER
PT J
AU Link, RE
AF Link, Richard E.
TI Round-robin Analysis of Standard Data Sets for Fracture Toughness
Evaluation in ASTM E1820
SO JOURNAL OF TESTING AND EVALUATION
LA English
DT Article
DE unloading compliance; J-integral; J(IC); J-R curve
AB A set of standard data sets from typical fracture toughness tests was used in an analytical round-robin to determine whether the proposed data sets were suitable for use as adjuncts to ASTM E1820-09, "Standard Test Method for the Measurement of Fracture Toughness."Four laboratories participated in the round-robin and submitted analyses of all of the data sets. The results showed good agreement among the laboratories on the individual J-integral calculations and crack size estimates. However, small differences in the estimated crack extension during the tests led to large uncertainty in the calculated fracture toughness of up to 20 % of the mean value of the fracture toughness from all of the laboratories for the data set. A synthesized test record that eliminated the nonlinear behavior commonly observed in unloading compliance test records was developed and distributed to the participants. There was excellent agreement among the results from all participants for the synthesized data set. The standard data sets were determined to be suitable for validating analysis programs for calculating fracture toughness in accordance with ASTM E1820. The uncertainty in the calculated fracture toughness could be reduced by prescribing in the test method exactly which data points in an unload are to be used for estimating the crack length, rather than letting the user decide which data points to include.
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Link, RE (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 8
TC 1
Z9 1
U1 1
U2 4
PU AMER SOC TESTING MATERIALS
PI W CONSHOHOCKEN
PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA
SN 0090-3973
EI 1945-7553
J9 J TEST EVAL
JI J. Test. Eval.
PD JAN
PY 2015
VL 43
IS 1
BP 159
EP 170
DI 10.1520/JTE20130143
PG 12
WC Materials Science, Characterization & Testing
SC Materials Science
GA CB2JU
UT WOS:000349454100010
ER
PT J
AU Feigelson, BN
Bermudez, VM
Hite, JK
Robinson, ZR
Wheeler, VD
Sridhara, K
Hernandez, SC
AF Feigelson, Boris N.
Bermudez, Victor M.
Hite, Jennifer K.
Robinson, Zachary R.
Wheeler, Virginia D.
Sridhara, Karthik
Hernandez, Sandra C.
TI Growth and spectroscopic characterization of monolayer and few-layer
hexagonal boron nitride on metal substrates
SO NANOSCALE
LA English
DT Article
ID THERMAL-CONDUCTIVITY; H-BN; GRAPHENE; CU(111); NI(111); DISPERSION;
CRYSTAL; COPPER; RANGE
AB Atomically thin two dimensional hexagonal boron nitride (2D h-BN) is one of the key materials in the development of new van der Waals heterostructures due to its outstanding properties including an atomically smooth surface, high thermal conductivity, high mechanical strength, chemical inertness and high electrical resistance. The development of 2D h-BN growth is still in the early stages and largely depends on rapid and accurate characterization of the grown monolayer or few layers h-BN films. This paper demonstrates a new approach to characterizing monolayer h-BN films directly on metal substrates by grazing-incidence infrared reflection absorption spectroscopy (IRRAS). Using h-BN films grown by atmospheric-pressure chemical vapor deposition on Cu and Ni substrates, two new sub-bands are found for the A(2u) out-of-plane stretching mode. It is shown, using both experimental and computational methods, that the lower-energy sub-band is related to 2D h-BN coupled with substrate, while the higher energy sub-band is related to decoupled (or free-standing) 2D h-BN. It is further shown that this newly-observed fine structure in the A(2u) mode can be used to assess, quickly and easily, the homogeneity of the h-BN-metal interface and the effects of metal surface contamination on adhesion of the layer.
C1 [Feigelson, Boris N.; Bermudez, Victor M.; Hite, Jennifer K.; Robinson, Zachary R.; Wheeler, Virginia D.; Sridhara, Karthik; Hernandez, Sandra C.] US Naval Res Lab, Washington, DC 20375 USA.
[Sridhara, Karthik] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
RP Feigelson, BN (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM boris.feygelson@nrl.navy.mil
RI Hite, Jennifer/L-5637-2015
OI Hite, Jennifer/0000-0002-4090-0826
FU Naval Research Laboratory basic research program; Office of Naval
Research; American Society for Engineering Education
FX The authors gratefully acknowledge the Naval Research Laboratory basic
research program and the Office of Naval Research for support of this
work. Authors also gratefully acknowledge Dr Kurt Gaskill and Dr Fritz
Kub for their support of this work. Also, Z.R.R. would like to thank the
American Society for Engineering Education for his postdoctoral support.
NR 39
TC 4
Z9 5
U1 8
U2 94
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 2015
VL 7
IS 8
BP 3694
EP 3702
DI 10.1039/c4nr05557h
PG 9
WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials
Science, Multidisciplinary; Physics, Applied
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA CB2QY
UT WOS:000349474200044
PM 25640166
ER
PT J
AU Armey, LE
McNab, RM
AF Armey, Laura E.
McNab, Robert M.
TI Democratization and civil war
SO APPLIED ECONOMICS
LA English
DT Article
DE civil war; democracy; conflict; democratization; outcomes of war
ID PANEL-DATA; STATE CAPACITY; DEMOCRACY; MODELS; PEACE; TESTS; ELECTIONS;
EDUCATION; INCOME; OIL
AB This article examines the impact of civil war on democratization, particularly focusing on whether civil war provides an opportunity for institutional reform. We investigate the impact of war termination in general, along with prolonged violence, rebel victory and international intervention on democratization. Using an unbalanced panel data set of 96 countries covering a 34-year period, our analysis suggests that civil war lowers democratization in the succeeding period. Our findings also suggest that United Nations intervention increases democratization, as do wars ending in stalemates. However, wars ending in rebel victories seem to reduce democratization. These findings appear robust to conditioning, different instrument sets, modelling techniques and the measurement of democracy.
C1 [Armey, Laura E.; McNab, Robert M.] Naval Postgrad Sch, Monterey, CA 93933 USA.
RP Armey, LE (reprint author), Naval Postgrad Sch, Monterey, CA 93933 USA.
EM larmey@nps.edu
OI Armey, Laura/0000-0001-5260-5720
NR 56
TC 1
Z9 1
U1 1
U2 9
PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXFORDSHIRE, ENGLAND
SN 0003-6846
EI 1466-4283
J9 APPL ECON
JI Appl. Econ.
PY 2015
VL 47
IS 18
BP 1863
EP 1882
DI 10.1080/00036846.2014.1000529
PG 20
WC Economics
SC Business & Economics
GA CA2SB
UT WOS:000348756500004
ER
PT J
AU Carroll, TL
AF Carroll, T. L.
TI Attractor comparisons based on density
SO CHAOS
LA English
DT Article
ID CHAOTIC TIME-SERIES; STRANGE ATTRACTORS; PREDICTION; SYSTEMS;
RECONSTRUCTION; DIMENSION; ERROR
AB Recognizing a chaotic attractor can be seen as a problem in pattern recognition. Some feature vector must be extracted from the attractor and used to compare to other attractors. The field of machine learning has many methods for extracting feature vectors, including clustering methods, decision trees, support vector machines, and many others. In this work, feature vectors are created by representing the attractor as a density in phase space and creating polynomials based on this density. Density is useful in itself because it is a one dimensional function of phase space position, but representing an attractor as a density is also a way to reduce the size of a large data set before analyzing it with graph theory methods, which can be computationally intensive. The density computation in this paper is also fast to execute. In this paper, as a demonstration of the usefulness of density, the density is used directly to construct phase space polynomials for comparing attractors. Comparisons between attractors could be useful for tracking changes in an experiment when the underlying equations are too complicated for vector field modeling.
C1 US Naval Res Lab, Washington, DC 20375 USA.
RP Carroll, TL (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
EM Thomas.Carroll@nrl.navy.mil
OI Carroll, Thomas/0000-0002-2371-2049
NR 26
TC 3
Z9 3
U1 0
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1054-1500
EI 1089-7682
J9 CHAOS
JI Chaos
PD JAN
PY 2015
VL 25
IS 1
AR 013111
DI 10.1063/1.4906342
PG 6
WC Mathematics, Applied; Physics, Mathematical
SC Mathematics; Physics
GA CA6CV
UT WOS:000348997000011
PM 25637922
ER
PT J
AU Mendola, P
Mumford, SL
Mannisto, TI
Holston, A
Reddy, UM
Laughon, SK
AF Mendola, Pauline
Mumford, Sunni L.
Mannisto, Tuija I.
Holston, Alexander
Reddy, Uma M.
Laughon, S. Katherine
TI Controlled Direct Effects of Preeclampsia on Neonatal Health After
Accounting for Mediation by Preterm Birth
SO EPIDEMIOLOGY
LA English
DT Article
ID MARGINAL STRUCTURAL MODELS; CEREBRAL-PALSY; ANGIOGENIC FACTORS;
GESTATIONAL-AGE; AMNIOTIC-FLUID; RISK; COHORT; PREGNANCY; COMPLICATIONS;
EPIDEMIOLOGY
AB Background: Preeclampsia is characterized by alterations in angiogenic factors that may increase neonatal morbidity independent of preterm birth.
Methods: We estimated the controlled direct effect of preeclampsia on neonatal outcomes independent of preterm birth among 200,103 normotensive and 10,507 preeclamptic singleton pregnancies in the Consortium on Safe Labor (2002-2008). Marginal structural models with stabilized inverse probability weights accounted for potential confounders in the pathway from preeclampsia to preterm birth to neonatal outcomes, including mediator-outcome confounders related to preeclampsia status, such as cesarean delivery. Controlled direct effects of preeclampsia on perinatal mortality, small for gestational age (SGA), neonatal intensive care unit (NICU) admission, respiratory distress syndrome, transient tachypnea of the newborn, anemia, apnea, asphyxia, peri-or intraventricular hemorrhage, and cardiomyopathy were estimated for the hypothesized intervention of term delivery for all infants.
Results: When delivery was set at >= 37 weeks, preeclampsia increased the odds of perinatal mortality (odds ratio = 2.2 [95% confidence interval = 1.1-4.5], SGA = (1.9 [1.8-2.1]), NICU admission (1.9 [1.7-2.1]), respiratory distress syndrome (2.8 [2.0-3.7], transient tachypnea of the newborn (1.6 [1.3-1.9]), apnea (2.2 [1.6-3.1]), asphyxia (2.7 [1.5-4.9]), and peri-or intraventricular hemorrhage (3.2 [1.4-7.7]). No direct effect of preeclampsia at term was observed for anemia or cardiomyopathy. Our results appear robust in the presence of moderate confounding, and restriction to severe preeclampsia yielded similar findings.
Conclusion: Preeclampsia was directly associated with adverse neonatal outcomes beyond morbidity mediated by preterm birth. Although severe neonatal outcomes were less common at later gestational ages, marginal structural models suggested elevated neonatal risk due to preeclampsia even if it was possible to deliver all infants at term.
C1 [Mendola, Pauline; Mumford, Sunni L.; Mannisto, Tuija I.; Laughon, S. Katherine] Eunice Kennedy Shriver Natl Inst Child Hlth & Hum, Div Intramural Populat Hlth Res, Rockville, MD 20852 USA.
[Mannisto, Tuija I.] Natl Inst Hlth & Welf, Dept Chron Dis Prevent, Diabet Prevent Unit, Oulu, Finland.
[Holston, Alexander] Naval Med Ctr Portsmouth, Dept Pediat, Portsmouth, VA USA.
[Reddy, Uma M.] Eunice Kennedy Shriver Natl Inst Child Hlth & Hum, Div Extramural Res, Rockville, MD 20852 USA.
RP Mendola, P (reprint author), Eunice Kennedy Shriver Natl Inst Child Hlth & Hum, Div Intramural Populat Hlth Res, 6100 Execut Blvd,Room 7B03F, Rockville, MD 20852 USA.
EM pauline.mendola@nih.gov
OI Mannisto, Tuija/0000-0002-6382-9153; Mendola,
Pauline/0000-0001-5330-2844
FU Intramural Research Program of the National Institutes of Health, Eunice
Kennedy Shriver National Institute of Child Health and Human
Development; Intramural Research Program of the Eunice Kennedy Shriver
National Institute of Child Health and Human Development, National
Institutes of Health [HHSN267200603425C]
FX Supported by the Intramural Research Program of the National Institutes
of Health, Eunice Kennedy Shriver National Institute of Child Health and
Human Development. The Consortium on Safe Labor was supported by the
Intramural Research Program of the Eunice Kennedy Shriver National
Institute of Child Health and Human Development, National Institutes of
Health through Contract No. HHSN267200603425C.
NR 35
TC 11
Z9 11
U1 1
U2 8
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA TWO COMMERCE SQ, 2001 MARKET ST, PHILADELPHIA, PA 19103 USA
SN 1044-3983
EI 1531-5487
J9 EPIDEMIOLOGY
JI Epidemiology
PD JAN
PY 2015
VL 26
IS 1
BP 17
EP 26
DI 10.1097/EDE.0000000000000213
PG 10
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA AU8XZ
UT WOS:000345878000016
PM 25437315
ER
PT B
AU Mullen, AM
AF Mullen, Admiral Mike
BE Reed, D
TI IN PURSUIT OF PROSPERITY US Foreign Policy in an Era of Natural Resource
Scarcity FOREWORD
SO IN PURSUIT OF PROSPERITY: U.S. FOREIGN POLICY IN AN ERA OF NATURAL
RESOURCE SCARCITY
LA English
DT Editorial Material; Book Chapter
C1 [Mullen, Admiral Mike] Joint Chiefs Staff, Pentagon, AR USA.
[Mullen, Admiral Mike] US Navy, Washington, DC USA.
[Mullen, Admiral Mike] Naval Operat, New York, NY USA.
[Mullen, Admiral Mike] Princeton Univ, Princeton, NJ 08544 USA.
[Mullen, Admiral Mike] Bloomberg Philanthropies, New York, NY USA.
[Mullen, Admiral Mike] Gen Motors, Detroit, MI USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU ROUTLEDGE
PI ABINGDON
PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND
BN 978-1-138-79190-9; 978-1-315-75137-5; 978-1-138-79189-3
PY 2015
BP XVIII
EP XX
PG 3
WC International Relations; Political Science
SC International Relations; Government & Law
GA BB8FF
UT WOS:000346498600001
ER
PT J
AU Ferguson, JD
Reshchikov, MA
Baski, AA
Hite, JK
Mastro, MA
Eddy, CR
AF Ferguson, Josephus D.
Reshchikov, Michael A.
Baski, Alison A.
Hite, Jennifer K.
Mastro, Michael A.
Eddy, Charles R., Jr.
TI Determination of GaN polarity on periodically oriented surfaces
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID FORCE MICROSCOPY; HETEROSTRUCTURES; INVERSION; PHOTOELECTRON; GROWTH;
OXYGEN; FILMS; OXIDE
AB Periodically oriented GaN surfaces have been investigated using scanning probe microscopy techniques to compare Ga- and N-polar regions on a common surface. An epitaxial layer comprising 16 mu m-wide stripes of alternating surface polarity was grown by utilizing a patterned AlN layer on an N-polar GaN template. The regions of different polarity are easily distinguishable in atomic force microscopy (AFM) images, with the Ga-polar stripes, which nucleate on the patterned AlN regions being approximately 300 nm higher than the adjacent N-polar stripes. In addition, local surface potential measurements using scanning Kelvin probe microscopy (SKPM) indicate that the N-polar regions are 0.2 to 0.5 eV higher in potential compared to Ga-polar ones, with lower surface potential contrast occurring after an HCl-based surface treatment. Using conductive AFM, electrons were injected into the surface to probe the surface charging behavior in dark. Only the N-polar regions demonstrated significant localized charging, where changes of over 1.5 eV were seen in SKPM images taken immediately after charging. This behavior was appreciably decreased by an HCl treatment, suggesting that a surface oxide in the N-polar regions plays a significant role in the charging behavior. In addition, the local surface photovoltage (SPV) was measured using above-bandgap illumination. The N-polar regions demonstrate a higher steady-state SPV value and a significantly slower restoration behavior as compared to the Ga-polar regions. The authors therefore find that several characterization techniques can readily distinguish the Ga-versus N-polar regions on this periodically oriented surface. (C) 2014 American Vacuum Society.
C1 [Ferguson, Josephus D.; Reshchikov, Michael A.; Baski, Alison A.] Virginia Commonwealth Univ, Dept Phys, Richmond, VA 23284 USA.
[Hite, Jennifer K.; Mastro, Michael A.; Eddy, Charles R., Jr.] US Naval Res Lab, Washington, DC 20375 USA.
RP Ferguson, JD (reprint author), Univ Mary Washington, Jepson Sci Ctr, 1301 Coll Ave, Fredericksburg, VA 22401 USA.
EM aabaski@vcu.edu
RI Hite, Jennifer/L-5637-2015;
OI Hite, Jennifer/0000-0002-4090-0826; Baski, Alison/0000-0002-8985-8067
FU NSF; Office of Naval Research
FX The authors would like to thank NSF for funding and J. D. McNamara for
helpful discussions. Work at the U.S. Naval Research Laboratory is
supported by the Office of Naval Research.
NR 33
TC 3
Z9 3
U1 0
U2 13
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD JAN
PY 2015
VL 33
IS 1
AR 011206
DI 10.1116/1.4904742
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA CA4ZF
UT WOS:000348915500022
ER
PT J
AU Shifler, D
AF Shifler, D.
TI Meeting materials needs in extreme naval corrosive and oxidative
environments
SO MATERIALS AT HIGH TEMPERATURES
LA English
DT Article
DE Thermal barrier coatings; Metal complexionised ceramics; Intermetallic
alloys; Ceramic matrix composites; Environmental barrier coatings; Gas
turbine engines; Complexions
ID SI-B ALLOYS; THERMAL BARRIER COATINGS; MODIFIED ALUMINIDE COATINGS;
AL-BASED ALLOYS; HOT CORROSION; NANOCRYSTALLINE MATERIALS; PACK
CEMENTATION; BEHAVIOR; SODIUM; DELAMINATION
AB High temperature applications demand materials that have a variety of properties such as high strength, toughness, creep resistance, fatigue resistance, as well a resistance to degradation by interaction with the environment. All potential metallic materials become unstable in many high temperature environments without the presence of a stable, protective coating on the component surface. Reliable high temperature propulsion materials are critical for enabling improvements in engine efficiency, reducing fuel costs, and decreasing maintenance/total life cycle costs. Propulsion materials for both Naval aircraft and ship gas turbine engines are subjected to the corrosive marine, salt laden environment to differing degrees. Materials life is dependent on dynamic combinations of temperature, cyclic activities and mechanical stress with the marine environment. Research seeks to explore and understand the thermodynamics and kinetics of materials interactions and material stability in Naval environments and temperatures in order to develop models that lead to creating new materials or establishing life prediction of existing and novel materials. This research may discover new mechanisms and causes that lead to materials instabilities and degradation at high temperatures. The research and the models that follow need to address how these mechanisms are fundamentally influenced by mechanics, interdiffusion, coating or materials chemistry, temperature, environment and structure in order to establish fundamental scientific principles to mitigate such instabilities and degradation. This paper will dwell on some past results of materials testing and offer some views on future directions into materials research in high temperature materials in aggressive Naval environments which can be applicable to other services.
C1 Off Naval Res, Naval Mat Div, Arlington, VA 22203 USA.
RP Shifler, D (reprint author), Off Naval Res, Naval Mat Div, Arlington, VA 22203 USA.
EM david.shifler@navy.mil
NR 79
TC 0
Z9 0
U1 7
U2 23
PU MANEY PUBLISHING
PI LEEDS
PA STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND
SN 0960-3409
EI 1878-6413
J9 MATER HIGH TEMP
JI Mater. High Temp.
PD JAN
PY 2015
VL 32
IS 1-2
BP 148
EP 159
DI 10.1179/0960340914Z.00000000091
PG 12
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA CA2BF
UT WOS:000348713300021
ER
PT J
AU Lee, RU
Parrish, SC
Saeed, O
Fiedler, CJP
AF Lee, Rachel U.
Parrish, Scott C.
Saeed, Omar
Fiedler, Col Joyce P.
TI Combat Internist: The Internal Medicine Experience in a Combat Hospital
in Afghanistan
SO MILITARY MEDICINE
LA English
DT Article
ID INJURY; IRAQ; CARE
AB Military internists and internal medicine subspecialists are physicians who generally work in traditional internal medicine settings. However, when deployed to combat settings, they must prepare and adapt their skills for a wide spectrum of complex, polytrauma, and multinational patients. There are limitations in personnel, equipment, and technical resources that make the circumstances complex and demanding. This article highlights some of the unique roles, challenges, and experiences of four military internists at the NATO Role 3, a deployed combat hospital in Afghanistan.
C1 [Lee, Rachel U.] Naval Hlth Res Ctr, Operat Infect Dis Dept, San Diego, CA 92106 USA.
[Parrish, Scott C.] Walter Reed Natl Mil Med Ctr, Bethesda, MD 20889 USA.
[Saeed, Omar] Naval Med Ctr San Diego, San Diego, CA 92134 USA.
[Fiedler, Col Joyce P.] 96th Aerosp Med Squadron, Eglin AFB, FL 32542 USA.
RP Lee, RU (reprint author), Naval Hlth Res Ctr, Operat Infect Dis Dept, 140 Sylvester Rd, San Diego, CA 92106 USA.
NR 9
TC 0
Z9 0
U1 0
U2 0
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD JAN
PY 2015
VL 180
IS 1
BP 12
EP 16
DI 10.7205/MILMED-D-14-00262
PG 5
WC Medicine, General & Internal
SC General & Internal Medicine
GA CA7MM
UT WOS:000349101400019
PM 25562851
ER
PT J
AU Peterson, DD
AF Peterson, David D.
TI History of the US Navy Body Composition Program
SO MILITARY MEDICINE
LA English
DT Article
ID WAIST CIRCUMFERENCE; FAT; RELIABILITY; OBESITY; MASS
AB The Navy currently employs maximum weight-for-height tables and body fat prediction equations based on circumference measurements to assess body composition. However, many Sailors believe the current method fails to accurately predict body fat percentage. As a result, the Naval Health Research Center (NHRC) conducted numerous studies in an attempt to improve the accuracy and reliability of the Navy's Body Composition Analysis program. In 2012, NHRC conducted a study that researched the feasibility of using a single abdominal circumference (AC) measurement in lieu of circumference measurements. The Air Force and National Institutes of Health (NIH) employ a single AC measurement taken at the superior border of the iliac crest to assess body composition and all-cause mortality risk. Although the Air Force and NIH use the iliac crest, NHRC is proposing the Navy use the umbilicus as the AC site since it is less invasive and easier to identify. If implemented, the Navy would use cutoff values of 40 in. and 36 in. for males and females, respectively. The purpose of this article is to provide a brief history of the Navy's Body Composition Analysis program as well as propose the transition from circumference measurements to a single AC measurement.
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Peterson, DD (reprint author), US Naval Acad, 121 Blake Rd, Annapolis, MD 21402 USA.
NR 22
TC 0
Z9 0
U1 0
U2 0
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD JAN
PY 2015
VL 180
IS 1
BP 91
EP 96
DI 10.7205/MILMED-D-14-00266
PG 6
WC Medicine, General & Internal
SC General & Internal Medicine
GA CA7MM
UT WOS:000349101400031
PM 25562863
ER
PT J
AU Papacostas, MF
McLean, M
AF Papacostas, Michael F.
McLean, Matthew
TI Blood Cell Exchange in the Treatment of Exercise-Induced Rhabdomyolysis
in a Patient With Sickle Cell Trait
SO MILITARY MEDICINE
LA English
DT Article
ID SUDDEN-DEATH
AB We report the use of red blood cell exchange (RBCex) to treat rhabdomyolysis complicated by acute kidney injury in a 16-year-old African-American female with sickle cell trait (SCT). Treatment with aggressive fluid and electrolyte management failed to stem the rise in her creatine kinase, and RBCex was instituted 27 hours after symptom onset. She had a transient improvement in her creatine kinase following this treatment although it failed to resolve a developing lower extremity compartment syndrome, requiring bilateral lower extremity fasciotomies. The mechanism of exercise-induced rhabdomyolysis in individuals with SCT is theorized to result from localized hypoxia and acidosis within exercising muscle significant enough to cause a localized sickling crisis with resultant rhabdomyolysis. Despite the unique pathophysiology of rhabdomyolysis in individuals with SCT, there is a paucity of adjunctive treatment options beyond fluid and electrolyte therapy. To the best of our knowledge, RBCex for treatment of rhabdomyolysis in a patient with SCT has been described only once before by Huang et al. We report here a second case in the use of RBCex in the treatment of rhadbomyolysis in a patient with SCT.
C1 [Papacostas, Michael F.; McLean, Matthew] Naval Med Ctr Portsmouth, Dept Pediat, Portsmouth, VA 23708 USA.
RP Papacostas, MF (reprint author), Naval Med Ctr Portsmouth, Dept Pediat, 260 John Paul Jones Circle, Portsmouth, VA 23708 USA.
NR 13
TC 1
Z9 1
U1 0
U2 0
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD JAN
PY 2015
VL 180
IS 1
BP E145
EP E148
DI 10.7205/MILMED-D-13-00577
PG 4
WC Medicine, General & Internal
SC General & Internal Medicine
GA CA7MM
UT WOS:000349101400007
PM 25562874
ER
PT J
AU Poludnenko, AY
AF Poludnenko, Alexei Y.
TI Pulsating instability and self-acceleration of fast turbulent flames
SO PHYSICS OF FLUIDS
LA English
DT Article
ID DIRECT NUMERICAL-SIMULATION; LARGE-EDDY SIMULATIONS; PREMIXED FLAMES;
DYNAMIC FORMULATION; SCALE TURBULENCE; WRINKLING MODEL; IA SUPERNOVAE;
COMBUSTION; PROPAGATION; VELOCITY
AB A series of three-dimensional numerical simulations is used to study the intrinsic stability of high-speed turbulent flames. Calculations model the interaction of a fully resolved premixed flame with a highly subsonic, statistically steady, homogeneous, isotropic turbulence. The computational domain is unconfined to prevent the onset of thermoacoustic instabilities. We consider a wide range of turbulent intensities and system sizes, corresponding to the Damkohler numbers Da = 0.1 - 6.0. These calculations show that turbulent flames in the regimes considered are intrinsically unstable. In particular, we find three effects. (1) Turbulent flame speed, S-T, develops pulsations with the observed peak-to-peak amplitude S-T(max) / S-T(min) > 10 and a characteristic time scale close to a large-scale eddy turnover time. Such variability is caused by the interplay between turbulence, which continuously creates the flame surface, and highly intermittent flame collisions, which consume the flame surface. (2) Unstable burning results in the periodic pressure build-up and the formation of pressure waves or shocks, when S-T approaches or exceeds the speed of a Chapman-Jouguet deflagration. (3) Coupling of pressure gradients formed during pulsations with density gradients across the flame leads to the anisotropic amplification of turbulence inside the flame volume and flame acceleration. Such process, which is driven by the baroclinic term in the vorticity transport equation, is a reacting-flow analog of the mechanism underlying the Richtmyer-Meshkov instability. With the increase in turbulent intensity, the limit-cycle instability discussed here transitions to the regime described in our previous work, in which the growth of S-T becomes unbounded and produces a detonation.
C1 Naval Res Lab, Washington, DC 20375 USA.
RP Poludnenko, AY (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM apol@lcp.nrl.navy.mil
FU Air Force Office of Scientific Research (AFOSR) [F1ATA09114G005];
National Aeronautics and Space Administration (NASA) [NNH12AT33I]
FX The author is grateful to Peter Hamlington, Vadim Gamezo, Forman
Williams, Elaine Oran, Chiping Li, and Craig Wheeler for valuable
discussions, as well as the anonymous referees for helpful comments. The
author also gratefully acknowledges assistance of the Department of
Defense High Performance Computing Modernization Program (DoD HPCMP)
Data Analysis and Assessment Center (DAAC), and in particular of
Christopher Lewis and Vu Tran, with data visualization in Fig. 1. This
work was supported by the Air Force Office of Scientific Research
(AFOSR) Award No. F1ATA09114G005 and the National Aeronautics and Space
Administration (NASA) Award No. NNH12AT33I. Computing resources were
provided by the DoD HPCMP under the Frontier project award, and by the
Naval Research Laboratory.
NR 56
TC 11
Z9 11
U1 1
U2 20
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-6631
EI 1089-7666
J9 PHYS FLUIDS
JI Phys. Fluids
PD JAN
PY 2015
VL 27
IS 1
AR 014106
DI 10.1063/1.4905298
PG 25
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA CA7AD
UT WOS:000349068500030
ER
PT J
AU Lee, W
Umansky, MV
Angus, JR
Krasheninnikov, SI
AF Lee, Wonjae
Umansky, Maxim V.
Angus, J. R.
Krasheninnikov, Sergei I.
TI Electromagnetic effects on dynamics of high-beta filamentary structures
SO PHYSICS OF PLASMAS
LA English
DT Article
ID EDGE; TURBULENCE
AB The impacts of the electromagnetic effects on blob dynamics are considered. Electromagnetic BOUT++ simulations on seeded high-beta blobs demonstrate that inhomogeneity of magnetic curvature or plasma pressure along the filament leads to bending of the blob filaments and the magnetic field lines due to increased propagation time of plasma current (Alfven time). The bending motion can enhance heat exchange between the plasma facing materials and the inner scrape-off layer (SOL) region. The effects of sheath boundary conditions on the part of the blob away from the boundary are also diminished by the increased Alfven time. Using linear analysis and BOUT++ simulations, it is found that electromagnetic effects in high temperature and high density plasmas reduce the growth rate of resistive drift wave instability when resistivity drops below a certain value. The blobs temperature decreases in the course of its motion through the SOL and so the blob can switch from the electromagnetic to the electrostatic regime where resistive drift waves become important again. (C) 2015 AIP Publishing LLC.
C1 [Lee, Wonjae; Krasheninnikov, Sergei I.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Umansky, Maxim V.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Angus, J. R.] Naval Res Lab, Washington, DC 20375 USA.
RP Lee, W (reprint author), Univ Calif San Diego, 9500 Gilman Dr, La Jolla, CA 92093 USA.
EM skrash@mae.ucsd.edu
OI Angus, Justin/0000-0003-1474-0002
FU U.S. Department of Energy Office of Science, Office of Fusion Energy
Sciences at UCSD [DE-FG02-04ER54739, DE-SC0010413]; Office of Science of
the U.S. Department of Energy [DE-AC02-05CH11231]; Kwanjeong Educational
Foundation
FX This material was based upon work supported by the U.S. Department of
Energy Office of Science, Office of Fusion Energy Sciences under Award
Nos. DE-FG02-04ER54739 and DE-SC0010413 at UCSD. This research used
resources of the National Energy Research Scientific Computing Center, a
DOE Office of Science User Facility supported by the Office of Science
of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
This research was also supported by the Kwanjeong Educational
Foundation.
NR 22
TC 3
Z9 3
U1 2
U2 5
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD JAN
PY 2015
VL 22
IS 1
AR 012505
DI 10.1063/1.4905639
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA CA8NQ
UT WOS:000349178100027
ER
PT J
AU Pittenger, R
Wiseman, CH
AF Pittenger, Richard
Wiseman, Charles H.
TI Measured Transmission Loss-A Key to Improved Sonar Performance
Prediction
SO SEA TECHNOLOGY
LA English
DT Article
C1 [Pittenger, Richard; Wiseman, Charles H.] US Naval Acad, Annapolis, MD 21402 USA.
RP Pittenger, R (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU COMPASS PUBLICATIONS, INC
PI ARLINGTON
PA 1501 WILSON BLVD., STE 1001, ARLINGTON, VA 22209-2403 USA
SN 0093-3651
J9 SEA TECHNOL
JI Sea Technol.
PD JAN
PY 2015
VL 56
IS 1
BP 47
EP 49
PG 3
WC Engineering, Ocean
SC Engineering
GA CA4SN
UT WOS:000348894800024
ER
PT J
AU Hodyss, D
Nichols, N
AF Hodyss, Daniel
Nichols, Nancy
TI The error of representation: basic understanding
SO TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY
LA English
DT Article
DE Representation error; data assimilation; correlated observations; model
error; Bayesian
ID ATMOSPHERIC DATA ASSIMILATION; SIGNAL/ERROR CORRELATION; DISCRETIZATION
ERROR; UNRESOLVED SCALES; MODEL; INNOVATION
AB Representation error arises from the inability of the forecast model to accurately simulate the climatology of the truth. We present a rigorous framework for understanding this kind of error of representation. This framework shows that the lack of an inverse in the relationship between the true climatology (true attractor) and the forecast climatology (forecast attractor) leads to the error of representation. A new gain matrix for the data assimilation problem is derived that illustrates the proper approaches one may take to perform Bayesian data assimilation when the observations are of states on one attractor but the forecast model resides on another. This new data assimilation algorithm is the optimal scheme for the situation where the distributions on the true attractor and the forecast attractors are separately Gaussian, and there exists a linear map between them. The results of this theory are illustrated in a simple Gaussian multivariate model.
C1 [Hodyss, Daniel] Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
[Nichols, Nancy] Univ Reading, Sch Math & Phys Sci, Reading, Berks, England.
RP Hodyss, D (reprint author), Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
EM daniel.hodyss@nrlmry.navy.mil
FU NERC National Centre for Earth Observation in the UK; European Space
Agency
FX We gratefully acknowledge support from the Chief of Naval Research
PE-0601153N and from the NERC National Centre for Earth Observation in
the UK and the European Space Agency. We thank Jeff Anderson for a
thorough reading and insightful comments on this work.
NR 22
TC 3
Z9 3
U1 0
U2 5
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 2015
VL 67
AR 24822
DI 10.3402/tellusa.v67.24822
PG 17
WC Meteorology & Atmospheric Sciences; Oceanography
SC Meteorology & Atmospheric Sciences; Oceanography
GA CA2FE
UT WOS:000348723500001
ER
PT J
AU Long, JP
Simpkins, BS
AF Long, J. P.
Simpkins, B. S.
TI Coherent Coupling between a Molecular Vibration and Fabry-Perot Optical
Cavity to Give Hybridized States in the Strong Coupling Limit
SO ACS PHOTONICS
LA English
DT Article
DE vacuum Rabi splitting; strong coupling; infrared spectroscopy; optical
cavity; vibrational coupling
ID SEMICONDUCTOR MICROCAVITIES; VACUUM-FIELD; DYNAMICS; NANOCRYSTALS;
POLARITONS; EXCITONS; REGIMES
AB The coherent coupling between an optical transition and a confined optical mode, when sufficiently strong, gives rise to a new pair of mixed modes separated in frequency by the vacuum Rabi splitting. Such systems have been widely investigated for electronic-state transitions such as molecular excitons coupled to surface-plasmons and optical microcavities. However, only very recently have vibrational transitions been considered. Here we experimentally investigate the coupling between a Fabry-Perot cavity and the carbonyl stretch at an infrared frequency near 1730 cm(-1) in polymethyl methacrylate. As is requisite for the "strong coupling" regime, the measured vacuum-Rabi-splitting of 132 cm(-1) is much larger than the full width of either the cavity resonance (34 cm(-1)) or the inhomogeneously broadened carbonyl-stretch absorption (24 cm(-1)). With the assistance of quantitative analysis using transfer-matrix methods, we provide evidence that the mixed-state resonances are relatively immune to inhomogeneous vibrational broadening and demonstrate the ability to extract splittings by convenient angle tuning of the Fabry-Perot cavity to match the vibrational frequency. Opening the field of polaritonic coupling to vibrational species promises to be a rich arena amenable to a wide variety of infrared-active bonds that can be studied both statically (as here) and dynamically with ultrafast methods. Moreover, microfluidic cavities will permit the study of liquids, greatly expanding the range of assessable molecules.
C1 [Long, J. P.; Simpkins, B. S.] Naval Res Lab, Div Chem, Washington, DC 20375 USA.
RP Simpkins, BS (reprint author), Naval Res Lab, Div Chem, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM blake.simpkins@nrl.navy.mil
FU Office of Naval Research Nanoscience Institute Program [61-P087-13]
FX Research was funded by the Office of Naval Research Nanoscience
Institute Program 61-P087-13. The authors thank Dr. J. C. Owrutsky and
Dr. Igor Vurgaftman for enlightening discussion and guidance and Erik
Johnson for measuring the angular spread of the FTIR beam.
NR 39
TC 18
Z9 18
U1 11
U2 31
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2330-4022
J9 ACS PHOTONICS
JI ACS Photonics
PD JAN
PY 2015
VL 2
IS 1
BP 130
EP 136
DI 10.1021/ph5003347
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Optics; Physics, Applied; Physics, Condensed Matter
SC Science & Technology - Other Topics; Materials Science; Optics; Physics
GA AZ6OS
UT WOS:000348339400019
ER
PT J
AU Hwang, WS
Zhao, P
Tahy, K
Nyakiti, LO
Wheeler, VD
Myers-Ward, RL
Eddy, CR
Gaskill, DK
Robinson, JA
Haensch, W
Xing, H
Seabaugh, A
Jena, D
AF Hwang, Wan Sik
Zhao, Pei
Tahy, Kristof
Nyakiti, Luke O.
Wheeler, Virginia D.
Myers-Ward, Rachael L.
Eddy, Charles R., Jr.
Gaskill, D. Kurt
Robinson, Joshua A.
Haensch, Wilfried
Xing, Huili (Grace)
Seabaugh, Alan
Jena, Debdeep
TI Graphene nanoribbon field-effect transistors on wafer-scale epitaxial
graphene on SiC substrates
SO APL Materials
LA English
DT Article
ID QUANTUM; HG1-XCDXTE; DEVICE; EDGES
AB We report the realization of top-gated graphene nanoribbon field effect transistors (GNRFETs) of similar to 10 nm width on large-area epitaxial graphene exhibiting the opening of a band gap of similar to 0.14 eV. Contrary to prior observations of disordered transport and severe edge-roughness effects of graphene nanoribbons (GNRs), the experimental results presented here clearly show that the transport mechanism in carefully fabricated GNRFETs is conventional band-transport at room temperature and inter-band tunneling at low temperature. The entire space of temperature, size, and geometry dependent transport properties and electrostatics of the GNRFETs are explained by a conventional thermionic emission and tunneling current model. Our combined experimental and modeling work proves that carefully fabricated narrow GNRs behave as conventional semiconductors and remain potential candidates for electronic switching devices. (C) 2015 Author(s).
C1 [Hwang, Wan Sik; Zhao, Pei; Tahy, Kristof; Xing, Huili (Grace); Seabaugh, Alan; Jena, Debdeep] Univ Notre Dame, Dept Elect Engn, Notre Dame, IN 46556 USA.
[Hwang, Wan Sik] Korea Aerosp Univ, Dept Mat Engn, Goyang City 412791, Gyeonggi Do, South Korea.
[Nyakiti, Luke O.; Wheeler, Virginia D.; Myers-Ward, Rachael L.; Eddy, Charles R., Jr.; Gaskill, D. Kurt] US Naval Res Lab, Washington, DC 20375 USA.
[Nyakiti, Luke O.] Texas A&M Univ, Dept Mat Sci & Engn, College Stn, TX 77843 USA.
[Robinson, Joshua A.] Penn State Univ, University Pk, PA 16802 USA.
[Robinson, Joshua A.] Penn State Univ, Ctr 2D & Layered Mat, University Pk, PA 16802 USA.
[Haensch, Wilfried] IBM TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA.
RP Hwang, WS (reprint author), Univ Notre Dame, Dept Elect Engn, Notre Dame, IN 46556 USA.
EM whwang@kau.ac.kr; djena@nd.edu
FU Semiconductor Research Corporation (SRC); Nanoelectronics Research
Initiative (NRI); National Institute of Standards and Technology (NIST)
through the Midwest Institute for Nanoelectronics Discovery (MIND);
STARnet; SRC program - MARCO; DARPA; Office of Naval Research (ONR);
National Science Foundation (NSF); ASEE; National Research Foundation of
Korea (NRF) - Ministry of Science, ICT & Future Planning
[2014R1A1A1004770]
FX This work was supported by the Semiconductor Research Corporation (SRC),
Nanoelectronics Research Initiative (NRI), and the National Institute of
Standards and Technology (NIST) through the Midwest Institute for
Nanoelectronics Discovery (MIND), STARnet, an SRC program sponsored by
MARCO and DARPA, and by the Office of Naval Research (ONR), and the
National Science Foundation (NSF). L.O.N. is grateful for the
postdoctoral support from the ASEE and W. S. Hwang acknowledges the
support from Basic Science Research Program through the National
Research Foundation of Korea (NRF) funded by the Ministry of Science,
ICT & Future Planning (2014R1A1A1004770).
NR 45
TC 20
Z9 20
U1 7
U2 55
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 2166-532X
J9 APL MATER
JI APL Mater.
PD JAN
PY 2015
VL 3
IS 1
AR 011101
DI 10.1063/1.4905155
PG 9
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA CA6CC
UT WOS:000348995000001
ER
PT J
AU Collins, MD
Siegmann, WL
AF Collins, Michael D.
Siegmann, William L.
TI Treatment of a sloping fluid-solid interface and sediment layering with
the seismo-acoustic parabolic equation
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID PROPAGATION; APPROXIMATIONS; RAYLEIGH; MEDIA; DEPTH
AB The parabolic equation method is extended to handle problems in seismo-acoustics that have multiple fluid and solid layers, continuous depth dependence within layers, and sloping interfaces between layers. The medium is approximated in terms of a series of range-independent regions, and a single-scattering approximation is used to compute transmitted fields across the vertical interfaces between regions. The approach is implemented in terms of a set of dependent variables that is well suited to piecewise continuous depth dependence in the elastic parameters, but one of the fluid-solid interface conditions in that formulation involves a second derivative that complicates the treatment of sloping interfaces. This issue is resolved by using a non-centered, four-point difference formula for the second derivative. The approach is implemented using a matrix decomposition that is efficient when the parameters of the medium have a general dependence within the upper layers of the sediment but only depend on depth in the water column and deep within the sediment. (C) 2015 Acoustical Society of America.
C1 [Collins, Michael D.] Naval Res Lab, Washington, DC 20375 USA.
[Siegmann, William L.] Rensselaer Polytech Inst, Dept Math Sci, Troy, NY 12180 USA.
RP Siegmann, WL (reprint author), Rensselaer Polytech Inst, Dept Math Sci, Troy, NY 12180 USA.
EM siegmw@rpi.edu
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 15
TC 5
Z9 5
U1 0
U2 2
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 2015
VL 137
IS 1
BP 492
EP 497
DI 10.1121/1.4904526
PG 6
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA AZ6ZX
UT WOS:000348369000065
PM 25618077
ER
PT J
AU Brooks, DH
Ugarte-Urra, I
Warren, HP
AF Brooks, David H.
Ugarte-Urra, Ignacio
Warren, Harry P.
TI Full-Sun observations for identifying the source of the slow solar wind
SO NATURE COMMUNICATIONS
LA English
DT Article
ID EUV IMAGING SPECTROMETER; ACTIVE-REGION OUTFLOWS; DIFFERENTIAL EMISSION
MEASURE; HELIOSPHERIC MAGNETIC-FIELDS; EXTREME-ULTRAVIOLET;
DENSITY-MEASUREMENTS; ATOMIC DATABASE; TRANSITION ZONE; CORONAL HOLES;
HINODE
AB Fast (>700 km s(-1)) and slow (similar to 400 km s(-1)) winds stream from the Sun, permeate the heliosphere and influence the near-Earth environment. While the fast wind is known to emanate primarily from polar coronal holes, the source of the slow wind remains unknown. Here we identify possible sites of origin using a slow solar wind source map of the entire Sun, which we construct from specially designed, full-disk observations from the Hinode satellite, and a magnetic field model. Our map provides a full-Sun observation that combines three key ingredients for identifying the sources: velocity, plasma composition and magnetic topology and shows them as solar wind composition plasma outflowing on open magnetic field lines. The area coverage of the identified sources is large enough that the sum of their mass contributions can explain a significant fraction of the mass loss rate of the solar wind.
C1 [Brooks, David H.; Ugarte-Urra, Ignacio] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA.
[Warren, Harry P.] Div Space Sci, Naval Res Lab, Washington, DC 20375 USA.
RP Brooks, DH (reprint author), Hinode Team, ISAS JAXA, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan.
EM dhbrooks@ssd5.nrl.navy.mil
OI Ugarte-Urra, Ignacio/0000-0001-5503-0491
FU NASA Hinode program; Naval Research Laboratory
FX D.H.B. thanks M. L. DeRosa for guidance on the use of the PFSS software.
This work was performed under contract with the Naval Research
Laboratory and was funded by the NASA Hinode program. 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 co-operation with ESA and NSC (Norway).
CHIANTI is a collaborative project involving George Mason University,
the University of Michigan (USA) and the University of Cambridge (UK).
NR 60
TC 12
Z9 12
U1 0
U2 1
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD JAN
PY 2015
VL 6
AR 5947
DI 10.1038/ncomms6947
PG 9
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA CA3MK
UT WOS:000348810700003
PM 25562705
ER
PT J
AU Wells, TS
Seelig, AD
Ryan, MAK
Jones, JM
Hooper, TI
Jacobson, IG
Boyko, EJ
AF Wells, Timothy S.
Seelig, Amber D.
Ryan, Margaret A. K.
Jones, Jason M.
Hooper, Tomoko I.
Jacobson, Isabel G.
Boyko, Edward J.
TI Hearing loss associated with US military combat deployment
SO NOISE & HEALTH
LA English
DT Article
DE Combat disorders; hearing loss; military personnel
ID TRAUMATIC BRAIN-INJURY; MILLENNIUM COHORT; SERVICE MEMBERS;
NATIONAL-HEALTH; IMPULSE NOISE; ADULTS; PERSONNEL; RISK; POPULATION;
IMPAIRMENT
AB The objective of this study was to define the risk of hearing loss among US military members in relation to their deployment experiences. Data were drawn from the Millennium Cohort Study. Self-reported data and objective military service data were used to assess exposures and outcomes. Among all 48,540 participants, 7.5% self-reported new-onset hearing loss. Self-reported hearing loss showed moderate to substantial agreement (k = 0.57-0.69) with objective audiometric measures. New-onset hearing loss was associated with combat deployment (adjusted odds ratio [AOR] = 1.63, 95% confidence interval [CI] = 1.49-1.77), as well as male sex and older age. Among deployers, new-onset hearing loss was also associated with proximity to improvised explosive devices (AOR = 2.10, 95% CI = 1.62-2.73) and with experiencing a combat-related head injury (AOR = 6.88, 95% CI = 3.77-12.54). These findings have implications for health care and disability planning, as well as for prevention programs.
C1 [Wells, Timothy S.] Adv Analyt Optum, Ann Arbor, MI USA.
[Wells, Timothy S.] Adv Analyt Optum, San Diego, CA USA.
[Seelig, Amber D.; Jacobson, Isabel G.] Naval Hlth Res Ctr, San Diego, CA USA.
[Ryan, Margaret A. K.; Jones, Jason M.] Naval Hosp Camp Pendleton, San Diego, CA USA.
[Hooper, Tomoko I.] Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, Bethesda, MD 20814 USA.
[Seelig, Amber D.; Boyko, Edward J.] VA Puget Sound Hlth Care Syst, Epidemiol Res & Informat Ctr, Seattle, WA USA.
[Boyko, Edward J.] Univ Washington, Dept Med, Seattle, WA USA.
RP Wells, TS (reprint author), 1839 Waverly Rd, Holt, MI USA.
EM tmlbwells@wowway.com
NR 48
TC 2
Z9 2
U1 2
U2 6
PU MEDKNOW PUBLICATIONS & MEDIA PVT LTD
PI MUMBAI
PA B-9, KANARA BUSINESS CENTRE, OFF LINK RD, GHAKTOPAR-E, MUMBAI, 400075,
INDIA
SN 1463-1741
EI 1998-4030
J9 NOISE HEALTH
JI Noise Health
PD JAN-FEB
PY 2015
VL 17
IS 74
BP 34
EP 42
PG 9
WC Audiology & Speech-Language Pathology; Public, Environmental &
Occupational Health
SC Audiology & Speech-Language Pathology; Public, Environmental &
Occupational Health
GA AZ7EH
UT WOS:000348381200005
PM 25599756
ER
PT J
AU Collins, JD
Markham, A
Service, K
Reini, S
Wolf, E
Sessoms, P
AF Collins, John-David
Markham, Amanda
Service, Kathrine
Reini, Seth
Wolf, Erik
Sessoms, Pinata
TI A systematic literature review of the use and effectiveness of the
Computer Assisted Rehabilitation Environment for research and
rehabilitation as it relates to the wounded warrior
SO WORK-A JOURNAL OF PREVENTION ASSESSMENT & REHABILITATION
LA English
DT Review
DE CAREN; immersive virtual environment; warfighter; therapy
ID VIRTUAL ENVIRONMENT; MOVING PLATFORM; BALANCE; CAREN; STABILITY; STROKE;
PERFORMANCE; FEEDBACK; POSTSTROKE; TREADMILL
AB BACKGROUND: Several U.S. military treatment and research facilities employ a Computer Assisted Rehabilitation Environment (CAREN) [Motek Medical BV, Amsterdam, The Netherlands] for research and rehabilitation of complex injuries exhibited by Wounded Warriors. There has been little scientific evidence of the effectiveness of this type of system for rehabilitation.
OBJECTIVE: A systematic review of the literature was completed to determine what type of work has been performed on the CAREN and report findings of clinical significance.
METHODS: Specific terms were searched on electronic databases to include journal articles, abstracts, and peer-reviewed conference proceedings related to the CAREN.
RESULTS: Twenty-six publications were elicited that met our criteria. These were divided by their primary focus: rehabilitation, clinical research, and technical reports.
DISCUSSION: Results from published articles have determined that the system is a capable tool for both assessment and rehabilitation, but little has currently been published, particularly on patient populations.
CONCLUSION: More research needs to be performed to evaluate its effectiveness as a rehabilitation tool compared to other rehabilitation methods. It is expected that a system, such as the CAREN, will challenge patients multifactorially (e.g. physically and cognitively) and provide biofeedback while decreasing rehabilitation time and increasing effectiveness of treatment.
C1 [Collins, John-David; Markham, Amanda; Service, Kathrine; Reini, Seth; Sessoms, Pinata] Naval Hlth Res Ctr, San Diego, CA USA.
[Wolf, Erik] Walter Reed Natl Mil Med Ctr, Bethesda, MD USA.
RP Collins, JD (reprint author), 140 Sylvester Rd, San Diego, CA 92106 USA.
EM johndavidcollins@gmail.com
NR 38
TC 7
Z9 8
U1 1
U2 5
PU IOS PRESS
PI AMSTERDAM
PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS
SN 1051-9815
EI 1875-9270
J9 WORK
JI Work
PY 2015
VL 50
IS 1
BP 121
EP 129
DI 10.3233/WOR-141927
PG 9
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA AZ2DQ
UT WOS:000348045300014
PM 25167904
ER
PT J
AU Davenport, TC
AF Davenport, Tiffany C.
TI Policy-Induced Risk and Responsive Participation: The Effect of a Son's
Conscription Risk on the Voting Behavior of His Parents
SO AMERICAN JOURNAL OF POLITICAL SCIENCE
LA English
DT Article
ID DRAFT LOTTERY; VIETNAM-WAR; SELF-INTEREST; IRAQ-WAR; PROSPECT-THEORY;
PUBLIC-OPINION; CASUALTIES; SUPPORT; ATTITUDES; ELECTIONS
AB When do government policies induce responsive political participation? This study tests two hypotheses in the context of military draft policies. First, policy-induced risk motivates political participation. Second, contextual-level moderators, such as local events that make risk particularly salient, may intensify the effect of risk on participation. I use the random assignment of induction priority in the Vietnam draft lotteries to measure the effect of a son's draft risk on the voter turnout of his parents in the 1972 presidential election. I find higher rates of turnout among parents of men with losing draft lottery numbers. Among parents from towns with at least one prior war casualty, I find a 7 to 9 percentage point effect of a son's draft risk on his parents' turnout. The local casualty contextual-level moderator is theorized to operate through the mechanism of an availability heuristic, whereby parents from towns with casualties could more readily imagine the adverse consequences of draft risk.
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Davenport, TC (reprint author), US Naval Acad, 589 McNair Rd, Annapolis, MD 21402 USA.
EM tdavenpo@usna.edu
NR 84
TC 4
Z9 4
U1 1
U2 4
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0092-5853
EI 1540-5907
J9 AM J POLIT SCI
JI Am. J. Polit. Sci.
PD JAN
PY 2015
VL 59
IS 1
BP 225
EP 241
DI 10.1111/ajps.12117
PG 17
WC Political Science
SC Government & Law
GA AY9WG
UT WOS:000347897800014
ER
PT J
AU Chow, E
Gentry, S
Dzebisashvili, N
Schnitzler, M
Lentine, K
Massie, A
Segev, D
Axelrod, D
AF Chow, Eric
Gentry, Sommer
Dzebisashvili, Nino
Schnitzler, Mark
Lentine, Krista
Massie, Allan
Segev, Dorry
Axelrod, David
TI Reducing Cost of Care for Liver Transplant Candidates and Recipients By
Redistricting Liver Allocation
SO AMERICAN JOURNAL OF TRANSPLANTATION
LA English
DT Meeting Abstract
CT 15th Annual State of the Art Winter Symposium of the
American-Society-of-Transplant-Surgeons (ASTS)
CY JAN 15-18, 2015
CL Miami, FL
SP Amer Soc Transplant Surg
C1 [Chow, Eric; Massie, Allan; Segev, Dorry] Johns Hopkins Univ, Baltimore, MD USA.
[Gentry, Sommer] US Naval Acad, Annapolis, MD 21402 USA.
[Dzebisashvili, Nino; Schnitzler, Mark; Lentine, Krista] St Louis Univ, Sch Med, St Louis, MO USA.
[Axelrod, David] Dartmouth Hitchcock Med Ctr, Lebanon, NH 03766 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1600-6135
EI 1600-6143
J9 AM J TRANSPLANT
JI Am. J. Transplant.
PD JAN
PY 2015
VL 15
SU 1
SI SI
MA P-83
BP 85
EP 85
PG 1
WC Surgery; Transplantation
SC Surgery; Transplantation
GA AZ1YF
UT WOS:000348030600110
ER
PT J
AU Gentry, S
Chow, E
Massie, A
Luo, X
Segev, D
AF Gentry, Sommer
Chow, Eric
Massie, Allan
Luo, Xun
Segev, Dorry
TI Liver Sharing and Organ Procurement Organization Performance
SO AMERICAN JOURNAL OF TRANSPLANTATION
LA English
DT Meeting Abstract
CT 15th Annual State of the Art Winter Symposium of the
American-Society-of-Transplant-Surgeons (ASTS)
CY JAN 15-18, 2015
CL Miami, FL
SP Amer Soc Transplant Surg
C1 [Gentry, Sommer] US Naval Acad, Annapolis, MD 21402 USA.
[Chow, Eric; Massie, Allan; Luo, Xun; Segev, Dorry] Johns Hopkins Univ, Baltimore, MD USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1600-6135
EI 1600-6143
J9 AM J TRANSPLANT
JI Am. J. Transplant.
PD JAN
PY 2015
VL 15
SU 1
SI SI
MA P-97
BP 91
EP 91
PG 1
WC Surgery; Transplantation
SC Surgery; Transplantation
GA AZ1YF
UT WOS:000348030600124
ER
PT J
AU Chow, E
Gentry, S
Segev, D
AF Chow, Eric
Gentry, Sommer
Segev, Dorry
TI Predicted Impact of Redistricting on OPO-Level Import/Export of Livers
SO AMERICAN JOURNAL OF TRANSPLANTATION
LA English
DT Meeting Abstract
CT 15th Annual State of the Art Winter Symposium of the
American-Society-of-Transplant-Surgeons (ASTS)
CY JAN 15-18, 2015
CL Miami, FL
SP Amer Soc Transplant Surg
C1 [Chow, Eric; Segev, Dorry] Johns Hopkins Univ, Baltimore, MD USA.
[Gentry, Sommer] US Naval Acad, Annapolis, MD 21402 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1600-6135
EI 1600-6143
J9 AM J TRANSPLANT
JI Am. J. Transplant.
PD JAN
PY 2015
VL 15
SU 1
SI SI
MA P-105
BP 93
EP 93
PG 1
WC Surgery; Transplantation
SC Surgery; Transplantation
GA AZ1YF
UT WOS:000348030600131
ER
PT J
AU Sessions, WR
Reid, JS
Benedetti, A
Colarco, PR
da Silva, A
Lu, S
Sekiyama, T
Tanaka, TY
Baldasano, JM
Basart, S
Brooks, ME
Eck, TF
Iredell, M
Hansen, JA
Jorba, OC
Juang, HMH
Lynch, P
Morcrette, JJ
Moorthi, S
Mulcahy, J
Pradhan, Y
Razinger, M
Sampson, CB
Wang, J
Westphal, DL
AF Sessions, W. R.
Reid, J. S.
Benedetti, A.
Colarco, P. R.
da Silva, A.
Lu, S.
Sekiyama, T.
Tanaka, T. Y.
Baldasano, J. M.
Basart, S.
Brooks, M. E.
Eck, T. F.
Iredell, M.
Hansen, J. A.
Jorba, O. C.
Juang, H-M H.
Lynch, P.
Morcrette, J-J
Moorthi, S.
Mulcahy, J.
Pradhan, Y.
Razinger, M.
Sampson, C. B.
Wang, J.
Westphal, D. L.
TI Development towards a global operational aerosol consensus: basic
climatological characteristics of the International Cooperative for
Aerosol Prediction Multi-Model Ensemble (ICAP-MME)
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID SEA-SALT AEROSOL; BIOMASS BURNING EMISSIONS; TROPICAL CYCLONE WINDS;
ATMOSPHERIC DUST CYCLE; INDO-GANGETIC PLAINS; FOREST-FIRE SMOKE; SAHARAN
AIR LAYER; OPTICAL DEPTH; DATA ASSIMILATION; TROPOSPHERIC AEROSOL
AB Here we present the first steps in developing a global multi-model aerosol forecasting ensemble intended for eventual operational and basic research use. Drawing from members of the International Cooperative for Aerosol Prediction (ICAP) latest generation of quasi-operational aerosol models, 5-day aerosol optical thickness (AOT) forecasts are analyzed for December 2011 through November 2012 from four institutions: European Centre for Medium-Range Weather Forecasts (ECMWF), Japan Meteorological Agency (JMA), NASA Goddard Space Flight Center (GSFC), and Naval Research Lab/Fleet Numerical Meteorology and Oceanography Center (NRL/FNMOC). For dust, we also include the National Oceanic and Atmospheric Administration-National Geospatial Advisory Committee (NOAA NGAC) product in our analysis. The Barcelona Supercomputing Centre and UK Met Office dust products have also recently become members of ICAP, but have insufficient data to be included in this analysis period. A simple consensus ensemble of member and mean AOT fields for modal species (e.g., fine and coarse mode, and a separate dust ensemble) is used to create the ICAP Multi-Model Ensemble (ICAP-MME). The ICAP-MME is run daily at 00:00 UTC for 6-hourly forecasts out to 120 h. Basing metrics on comparisons to 21 regionally representative Aerosol Robotic Network (AERONET) sites, all models generally captured the basic aerosol features of the globe. However, there is an overall AOT low bias among models, particularly for high AOT events. Biomass burning regions have the most diversity in seasonal average AOT. The Southern Ocean, though low in AOT, nevertheless also has high diversity. With regard to root mean square error (RMSE), as expected the ICAP-MME placed first over all models worldwide, and was typically first or second in ranking against all models at individual sites. These results are encouraging; furthermore, as more global operational aerosol models come online, we expect their inclusion in a robust operational multi-model ensemble will provide valuable aerosol forecasting guidance.
C1 [Sessions, W. R.; Lynch, P.] CSC Inc, Monterey, CA USA.
[Reid, J. S.; Hansen, J. A.; Sampson, C. B.; Westphal, D. L.] Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
[Benedetti, A.; Morcrette, J-J; Razinger, M.] European Ctr Medium Range Weather Forecasts Readi, Reading, Berks, England.
[Colarco, P. R.; da Silva, A.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Lu, S.; Iredell, M.; Juang, H-M H.; Moorthi, S.; Wang, J.] NOAA NCEP, College Pk, MD USA.
[Sekiyama, T.; Tanaka, T. Y.] Japan Meteorol Agcy, Meteorol Res Inst, Atmospher Environm & Appl Meteorol Res Dept, Tsukuba, Ibaraki, Japan.
[Baldasano, J. M.; Basart, S.; Jorba, O. C.] Barcelona Supercomp Ctr, Ctr Nacl Supercomp, Earth Sci Dept, Barcelona, Spain.
[Brooks, M. E.; Mulcahy, J.; Pradhan, Y.] Met Off, Exeter, Devon, England.
[Eck, T. F.] NASA, Goddard Space Flight Ctr, USRA, Greenbelt, MD 20771 USA.
[Wang, J.] IM Syst Grp Inc, Rockville, MD USA.
RP Reid, JS (reprint author), Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
EM jeffrey.reid@nrlmry.navy.mil
RI Reid, Jeffrey/B-7633-2014; Brooks, Malcolm/E-7466-2011; Colarco,
Peter/D-8637-2012
OI Basart, Sara/0000-0002-9821-8504; Pradhan, Yaswant/0000-0002-3680-4751;
Jorba, Oriol/0000-0001-5872-0244; Reid, Jeffrey/0000-0002-5147-7955;
Brooks, Malcolm/0000-0002-4773-8630; Colarco, Peter/0000-0003-3525-1662
FU Office of Naval Research [code 322]; MACC-II project - European
Commission under the EU [283576]; Environmental Research and Technology
Development Fund of the Ministry of the Environment (MOE) of Japan
[B-1202]; Spanish Government [CGL2010/19652, CSD2007-0050]; Severo Ochoa
Program [SEV-2011-00067]
FX The authors are greatly indebted to their individual programs for
supporting ICAP and the development of the multi-model ensemble. We
recognize and appreciate the countless researchers and computer
engineers whose work supports the development and distribution of
aerosol forecasts. As data assimilation is key to model performance, we
are grateful to NASA LANCE-MODIS for providing MODIS near-real-time data
used in nearly all of the models here. We also acknowledge the effort of
the AERONET team (project leader Brent Holben) and the various site
principal investigators and site managers of the numerous AERONET sites
utilized in this study. Funding for the development of the construction
of ICAP-MME was provided by the Office of Naval Research, code 322.
Angela Benedetti, Jean-Jacques Morcrette and Miha Razinger were
supported through the MACC-II project, which is funded by the European
Commission under the EU Seventh Research Framework Programme, contract
number 283576. MASINGAR is developed in the Meteorological Research
Institute of Japan Meteorological Agency, and a part of the development
was funded by the Environmental Research and Technology Development Fund
(B-1202) of the Ministry of the Environment (MOE) of Japan. NAAPS
development is supported by the Office of Naval Research code 322, and
PMW-120. NGAC development has been supported by Joint Center for
Satellite Data Assimilation, NASA Applied Science Program, and NOAA
National Weather Service. NMMB/BSC-CTM development is supported by the
Spanish Government under grants CGL2010/19652, CSD2007-0050 and the
grant SEV-2011-00067 of Severo Ochoa Program.
NR 147
TC 15
Z9 15
U1 1
U2 14
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 2015
VL 15
IS 1
BP 335
EP 362
DI 10.5194/acp-15-335-2015
PG 28
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AZ0TQ
UT WOS:000347958200020
ER
PT J
AU Mahadik, NA
Qadri, SB
Freitas, JA
AF Mahadik, N. A.
Qadri, S. B.
Freitas, J. A., Jr.
TI Structural Inhomogeneities and Impurity Incorporation in Growth of
High-Quality Ammonothermal GaN Substrates
SO CRYSTAL GROWTH & DESIGN
LA English
DT Article
ID STRESS; LAYERS; HEMTS; BULK
AB Ammonothermal Gallium Nitride (GaN) substrates are the most promising substrates for homoepitaxial growth of GaN films having low dislocation density. Growth-induced structural inhomogeneities in these substrates were investigated by high-resolution X-ray topography (HR-XRT) and high-resolution X-ray diffraction (HR-XRD). A one-to-one correlation of defects was observed in photoluminescence imaging. From the HR-XRD intrinsic rocking curve widths were found to be 16 arcsecs indicating superior crystalline quality. The lattice constants were measured from symmetric and asymmetric reflections to be similar to bulk values indicting low sample strian. The true dislocation density, from the HR-XRT images, was observed to be of the order of 10(2) cm(-2) in the samples, and the radius of curvature was greater than 600 m. Growth striations were observed in the a and m-pane samples and are attributed to inhomogeneity in impurity incorporation during growth. Photoluminescence imaging showed deep level luminescent centers along the growth striations.
C1 [Mahadik, N. A.; Qadri, S. B.; Freitas, J. A., Jr.] US Naval Res Lab, Washington, DC 20375 USA.
RP Mahadik, NA (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
EM nadeem.mahadik@nrl.navy.mil
NR 23
TC 4
Z9 4
U1 4
U2 24
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1528-7483
EI 1528-7505
J9 CRYST GROWTH DES
JI Cryst. Growth Des.
PD JAN
PY 2015
VL 15
IS 1
BP 291
EP 294
DI 10.1021/cg5013523
PG 4
WC Chemistry, Multidisciplinary; Crystallography; Materials Science,
Multidisciplinary
SC Chemistry; Crystallography; Materials Science
GA AY6HK
UT WOS:000347667500036
ER
PT J
AU Dzikowicz, BR
Hefner, BT
Leasko, RA
AF Dzikowicz, Benjamin R.
Hefner, Brian T.
Leasko, Robert A.
TI Underwater Acoustic Navigation Using a Beacon With a Spiral Wave Front
SO IEEE JOURNAL OF OCEANIC ENGINEERING
LA English
DT Article
DE Acoustic devices; acoustic navigation; phased array; underwater
navigation
ID ARRAY
AB In this paper, a method for performing underwater acoustic navigation using a spiral wave-front beacon is examined. A transducer designed to emit a signal whose phase changes by 360 in one revolution can be used in conjunction with a reference signal to determine the aspect of a remote receiver relative to the beacon. Experiments are conducted comparing spiral wave-front beacon navigation to Global Positioning System (GPS) onboard an unmanned surface vehicle. The advantages and disadvantages of several outgoing signals and processing techniques are compared. The most successful technique involves the use of a phased array projector utilizing a broadband signal. Aspect is determined by using a weighted mean over frequencies. Sources of error for each of the techniques are also examined.
C1 [Dzikowicz, Benjamin R.] Naval Res Lab, Washington, DC 20375 USA.
[Hefner, Brian T.] Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA.
[Leasko, Robert A.] NSWC PCD, Panama City, FL 32407 USA.
RP Dzikowicz, BR (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM ben.dzikowicz@nrl.navy.mil; hefner@apl.washingtion.edu;
robert.leasko@navy.mil
FU U.S. Office of Naval Research
FX This work was supported by the U.S. Office of Naval Research. This work
was presented in part at the Second Pan-American/Iberian Meeting on
Acoustics, Cancun, Mexico, Nov. 15-19, 2010 (J. Acoust. Soc. Amer., vol.
128, p. 2328, Nov. 2010) and at the 162nd Meeting of the Acoustical
Society of America, San Diego, CA, USA, Oct. 31-Nov. 4, 2011 (J. Acoust.
Soc. Amer., vol. 130, p. 2527, Nov. 2011).
NR 18
TC 2
Z9 2
U1 2
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0364-9059
EI 1558-1691
J9 IEEE J OCEANIC ENG
JI IEEE J. Ocean. Eng.
PD JAN
PY 2015
VL 40
IS 1
BP 177
EP 186
DI 10.1109/JOE.2013.2293962
PG 10
WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical &
Electronic; Oceanography
SC Engineering; Oceanography
GA AZ0ZY
UT WOS:000347971400016
ER
PT J
AU Park, MS
Kim, HS
Ho, CH
Elsberry, RL
Lee, MI
AF Park, Myung-Sook
Kim, Hyeong-Seog
Ho, Chang-Hoi
Elsberry, Russell L.
Lee, Myong-In
TI Tropical Cyclone Mekkhala's (2008) Formation over the South China Sea:
Mesoscale, Synoptic-Scale, and Large-Scale Contributions
SO MONTHLY WEATHER REVIEW
LA English
DT Article
ID WESTERN NORTH PACIFIC; MADDEN-JULIAN OSCILLATION; AFRICAN EASTERLY WAVE;
TRMM PRECIPITATION RADAR; MULTIVARIATE MJO INDEX; PREEXISTING TYPHOON;
ENERGY DISPERSION; COOLING RATES; PART I; CYCLOGENESIS
AB Tropical cyclone formation close to the coastline of the Asian continent presents a significant threat to heavily populated coastal countries. A case study of Tropical Storm Mekkhala (2008) that developed off the coast of Vietnamis presented using the high-resolution analyses of the European Centre for Medium-Range Weather Forecasts/Year of Tropical Convection and multiple satellite observations. The authors have analyzed contributions to the formation from large-scale intraseasonal variability, synoptic perturbations, and mesoscale convective systems (MCSs). Within a large-scale westerly wind burst (WWB) associated with the Madden-Julian oscillation (MJO), synoptic perturbations generated by two preceding tropical cyclones initiated the pre-Mekkhala low-level vortex over the Philippine Sea. Typhoon Hagupit produced a synoptic-scale wave train that contributed to the development of Jangmi, but likely suppressed the Mekkhala formation. The low-level vortex of the pre-Mekkhala disturbance was then initiated in a confluent zone between northeasterlies in advance of Typhoon Jangmi and the WWB. Akey contribution to the development of Mekkhala was from diurnally varying MCSs that were invigorated in the WWB. The oceanic MCSs, which typically develop off the west coast of the Philippines in the morning and dissipate in the afternoon, were prolonged beyond the regular diurnal cycle. A combination with the MCSs developing downstream of the Philippines led to the critical structure change of the oceanic convective cluster, which implies the critical role of mesoscale processes. Therefore, the diurnally varying mesoscale convective processes over both the ocean and land are shown to have an essential role in the formation of Mekkhala in conjunction with large-scale MJO and the synoptic-scale TC influences.
C1 [Park, Myung-Sook; Lee, Myong-In] Ulsan Natl Inst Sci & Technol, Sch Urban & Environm Engn, Ulsan, South Korea.
[Kim, Hyeong-Seog] Korea Maritime & Ocean Univ, Ocean Sci & Technol Sch, Pusan 606791, South Korea.
[Ho, Chang-Hoi] Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea.
[Elsberry, Russell L.] Naval Postgrad Sch, Dept Meteorol, Monterey, CA USA.
RP Kim, HS (reprint author), Korea Maritime & Ocean Univ, Ocean Sci & Technol Sch, 727 Taejongro, Pusan 606791, South Korea.
EM hyeongseog@kmou.ac.kr
RI Kim, Hyeong-Seog/F-4496-2010; Ho, Chang-Hoi/H-8354-2015;
OI Kim, Hyeong-Seog/0000-0003-2577-3301; Lee, Myong-In/0000-0001-8983-8624
FU Korea Meteorological Administration Research and Development Program
under the Center for Atmospheric Sciences and Earthquake Research
(CATER) [2012-2040]; Office of Naval Research Marine Meteorology section
FX This work was funded by the Korea Meteorological Administration Research
and Development Program under the Center for Atmospheric Sciences and
Earthquake Research (CATER) Grant 2012-2040. Professor R. L. Elsberry is
supported by the Office of Naval Research Marine Meteorology section.
Figures 10-12 were generated through a program on University of Utah PMM
sciences site. Thus, the first author appreciates Dr. C. Liu at Texas
A&M for discussing the figures. Mrs. Penny Jones is acknowledged for her
support in the manuscript preparation.
NR 51
TC 2
Z9 3
U1 2
U2 13
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0027-0644
EI 1520-0493
J9 MON WEATHER REV
JI Mon. Weather Rev.
PD JAN
PY 2015
VL 143
IS 1
BP 88
EP 110
DI 10.1175/MWR-D-14-00119.1
PG 23
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AZ0DO
UT WOS:000347916700007
ER
PT J
AU Liao, FL
Lo, B
Sexton, D
Qu, J
Ma, CS
Chan, RCT
Lu, Q
Che, RC
Kwok, WM
He, HY
Fairclough, S
Tsang, SCE
AF Liao, Fenglin
Lo, Ben Tsz
Sexton, Douglas
Qu, Jin
Ma, Chensheng
Chan, Rath Chau-Ting
Lu, Qin
Che, Renchao
Kwok, Wai-Ming
He, Heyong
Fairclough, Simon
Tsang, Shik Chi Edman
TI A New Class of Tunable Heterojunction by using Two Support Materials for
the Synthesis of Supported Bimetallic Catalysts
SO CHEMCATCHEM
LA English
DT Article
DE excitons; heterojunctions; nanoparticles; reduction; supported catalysts
ID FEMTOSECOND DYNAMICS; METHANOL; HYDROCARBONS; SPECTROSCOPY; LIQUID;
ALLOYS; CO
AB Finely dispersed Rh or Pd nanoparticles are decorated with a small quantity of Fe atoms, originating from the controlled reduction of two supports, the mixed oxides of ZnFe2O4-Fe2O3, to form supported RhFe or PdFe bimetallic nanoparticles without significant change in particle size. The selectivity of ethylene glycol hydrogenolysis can be manipulated by adjusting the compositions of the catalysts. This reveals the important underlying principle for rational design and synthesis of new supported bimetallic nanoparticles by using two mixed oxides with a tailored heterojunction that exerts tuning catalytic properties.
C1 [Liao, Fenglin; Lo, Ben Tsz; Sexton, Douglas; Qu, Jin; Fairclough, Simon; Tsang, Shik Chi Edman] Univ Oxford, Dept Chem, Wolfson Catalysis Ctr, Oxford OX1 3QR, England.
[Ma, Chensheng; Chan, Rath Chau-Ting; Kwok, Wai-Ming] Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Kong, Hong Kong, Peoples R China.
[Lu, Qin] Naval Res Lab, Washington, DC 20375 USA.
[Che, Renchao; He, Heyong] Fudan Univ, Shanghai Key Lab Mol Catalysis, Shanghai 200433, Peoples R China.
RP Tsang, SCE (reprint author), Univ Oxford, Dept Chem, Wolfson Catalysis Ctr, S Parks Rd, Oxford OX1 3QR, England.
EM Edman.Tsang@chem.ox.ac.uk
OI KWOK, Wai-Ming/0000-0003-3673-1182
NR 24
TC 5
Z9 5
U1 4
U2 40
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1867-3880
EI 1867-3899
J9 CHEMCATCHEM
JI ChemCatChem
PD JAN
PY 2015
VL 7
IS 2
BP 230
EP 235
DI 10.1002/cctc.201402710
PG 6
WC Chemistry, Physical
SC Chemistry
GA AY8CG
UT WOS:000347781400005
ER
PT J
AU Staton, SJR
Woodward, A
Castillo, JA
Swing, K
Hayes, MA
AF Staton, Sarah J. R.
Woodward, Andrea
Castillo, Josemar A.
Swing, Kelly
Hayes, Mark A.
TI Ground level environmental protein concentrations in various ecuadorian
environments: Potential uses of aerosolized protein for ecological
research
SO ECOLOGICAL INDICATORS
LA English
DT Article
DE Bioaerosol; Ecuador; Environmental monitoring; Non-invasive; Protein
ID PARTICULATE MATTER; AMAZONIA; IDENTIFICATION; PRECIPITATION;
DEFORESTATION; BIODIVERSITY; PATTERNS; SITE; MASS
AB Large quantities of free protein in the environment and other bioaerosols are ubiquitous throughout terrestrial ground level environments and may be integrative indicators of ecosystem status. Samples of ground level bioaerosols were collected from various ecosystems throughout Ecuador, including pristine humid tropical forest (pristine), highly altered secondary humid tropical forest (highly altered), secondary transitional very humid forest (regrowth transitional), and suburban dry montane deforested (suburban deforested). The results explored the sensitivity of localized aerosol protein concentrations to spatial and temporal variations within ecosystems, and their value for assessing environmental change. Ecosystem specific variations in environmental protein concentrations were observed: pristine 0.32 +/- 0.09 mu g/m(3), highly altered 0.07 +/- 0.05 mu g/m(3), regrowth transitional 0.17 +/- 0.06 mu g/m(3), and suburban deforested 0.09 +/- 0.04 mu g/m(3). Additionally, comparisons of intra-environmental differences in seasonal/daily weather (dry season 0.08 +/- 0.03 mu g/m(3) and wet season 0.10 +/- 0.04 mu g/m(3)), environmental fragmentation (buffered 0.19 +/- 0.06 mu g/m(3) and edge 0.15 +/- 0.06 mu g/m(3)), and sampling height (ground level 0.32 +/- 0.09 mu g/m(3) and 10 m 0.24 +/- 0.04 mu g/m(3)) demonstrated the sensitivity of protein concentrations to environmental conditions. Local protein concentrations in altered environments correlated well with satellite-based spectral indices describing vegetation productivity: normalized difference vegetation index (NDVI) (r(2)=0.801), net primary production (NPP) (r(2) = 0.827), leaf area index (LAI) (r(2)=0.410). Moreover, protein concentrations distinguished the pristine site, which was not differentiated in spectral indices, potentially due to spectral saturation typical of highly vegetated environments. Bioaerosol concentrations represent an inexpensive method to increase understanding of environmental changes, especially in densely vegetated ecosystems with high canopies or in areas needing high spatial and temporal resolution. Further research to expand understanding of the applicability of bioaerosol concentrations for environmental monitoring is supported by this pilot study. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Staton, Sarah J. R.; Castillo, Josemar A.; Hayes, Mark A.] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA.
[Woodward, Andrea] US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, Seattle, WA 98115 USA.
[Swing, Kelly] Univ San Francisco Quito, Cumbaya, Ecuador.
RP Staton, SJR (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM sjrstaton@gmail.com
FU Department of State Fulbright Fellowship; Department of Education
Foreign Language and Area Studies Fellowship (FLAS)
FX This research was financially supported in part through the Department
of State Fulbright Fellowship and the Department of Education Foreign
Language and Area Studies Fellowship (FLAS). Great thanks are extended
to the Universidad San Francisco de Quito for all of their assistance,
guidance, and access to the Estacion de Biodiversidad Tiputini. Also
appreciated are the contributions and access offered by Dr. Jorge Nunez,
Dr. William Waters, Dr. Wilma Freire, Ms. Anne Helke, Dr. Tod Swanson,
the School of the Andes and Amazon, Mr. Samuel Andi, and the Itapod
Reserve. The research was conducted under permit number
014-IC-FAU/FLO-DPN/MA from the Ecuadorian Ministerio del Ambiente. Any
use of trade, product, or firm names is for descriptive purposes only
and does not imply endorsement by the U.S. Government.
NR 40
TC 1
Z9 1
U1 7
U2 21
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1470-160X
EI 1872-7034
J9 ECOL INDIC
JI Ecol. Indic.
PD JAN
PY 2015
VL 48
BP 389
EP 395
DI 10.1016/j.ecolind.2014.08.036
PG 7
WC Biodiversity Conservation; Environmental Sciences
SC Biodiversity & Conservation; Environmental Sciences & Ecology
GA AY3PK
UT WOS:000347495100041
ER
PT J
AU Turchi, PJ
AF Turchi, Peter J.
TI Compact Transformer Drive for High-Current Applications
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Megampere; pulsed power; transformer
ID PLASMA-FLOW SWITCH
AB The approach called precision high energy-density liner implosion experiment (PHELIX) provides a technique to allow research on high energy-density phenomena associated with liner implosions in a scaled-down system suitable for use with proton radiography. It has been noted that the ratio of load current to bank energy is almost an order of magnitude higher using the PHELIX transformer technique than achievable with direct drive from high-energy capacitor banks. This increase in current per stored-joule offers the opportunity for using similar transformer arrangements for other applications apart from imploding liners. These potential applications include rail-guns and the dense plasma focus. Results from the dimensionless analyses previously used successfully to design PHELIX will be described for these new applications and design limitations will be discussed.
C1 [Turchi, Peter J.] Air Force Weap Lab, Albuquerque, NM USA.
[Turchi, Peter J.] Naval Res Lab, Plasma Technol Branch, Washington, DC USA.
[Turchi, Peter J.] R&D Associates Inc, Washington Res Lab, Alexandria, VA USA.
[Turchi, Peter J.] Ohio State Univ, Columbus, OH 43210 USA.
[Turchi, Peter J.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Turchi, Peter J.] Amer Inst Aeronaut & Astronaut, Reston, VA 20191 USA.
RP Turchi, PJ (reprint author), Amer Inst Aeronaut & Astronaut, Reston, VA 20191 USA.
EM nmturchi1@aol.com
NR 14
TC 0
Z9 0
U1 1
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD JAN
PY 2015
VL 43
IS 1
BP 335
EP 338
DI 10.1109/TPS.2014.2375312
PN 2
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA AY8EL
UT WOS:000347787100002
ER
PT J
AU Turchi, PJ
AF Turchi, Peter J.
TI Liner Stability Problems for Megagauss Fusion
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Fusion; imploding liners; megagauss
ID COMPRESSION
AB Megagauss fields obtained by liner implosion may offer controlled fusion at much lower cost, size, and entry power levels than conventional fusion schemes. Such implosions are subject to elastic-plastic instability (for solid-density liners) and Rayleigh-Taylor instability in fluid liners (liquid or plasma). This paper provides budgets on allowable perturbations for the inner surface of the liner to offer a simple guide for researchers.
C1 [Turchi, Peter J.] Air Force Weap Lab, Albuquerque, NM USA.
[Turchi, Peter J.] Naval Res Lab, Plasma Technol Branch, Washington, DC USA.
[Turchi, Peter J.] R&D Associates Inc, Washington Res Lab, Alexandria, VA USA.
[Turchi, Peter J.] Ohio State Univ, Columbus, OH 43210 USA.
[Turchi, Peter J.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Turchi, Peter J.] Amer Inst Aeronaut & Astronaut, Reston, VA 20191 USA.
RP Turchi, PJ (reprint author), Amer Inst Aeronaut & Astronaut, Reston, VA 20191 USA.
EM nmturchi1@aol.com
NR 9
TC 1
Z9 1
U1 1
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD JAN
PY 2015
VL 43
IS 1
BP 369
EP 373
DI 10.1109/TPS.2014.2375315
PN 2
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA AY8EL
UT WOS:000347787100009
ER
PT J
AU Jardine, DA
Recupero, WD
Conley, GS
AF Jardine, Dinchen A.
Recupero, William D.
Conley, George S.
TI An Unusual Cause of Sudden Hearing Loss
SO JAMA OTOLARYNGOLOGY-HEAD & NECK SURGERY
LA English
DT Editorial Material
ID NEUROSARCOIDOSIS; SARCOIDOSIS; MANAGEMENT
C1 [Jardine, Dinchen A.; Recupero, William D.; Conley, George S.] Naval Med Ctr Portsmouth, Dept Otolaryngol Head & Neck Surg, Portsmouth, VA 23708 USA.
RP Jardine, DA (reprint author), Naval Med Ctr Portsmouth, Dept Otolaryngol Head & Neck Surg, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
EM Dinchen.Jardine@med.navy.mil
NR 8
TC 2
Z9 2
U1 0
U2 1
PU AMER MEDICAL ASSOC
PI CHICAGO
PA 330 N WABASH AVE, STE 39300, CHICAGO, IL 60611-5885 USA
SN 2168-6181
EI 2168-619X
J9 JAMA OTOLARYNGOL
JI JAMA Otolaryngol-Head Neck Surg.
PD JAN
PY 2015
VL 141
IS 1
BP 91
EP 92
DI 10.1001/jamaoto.2014.2785
PG 2
WC Otorhinolaryngology; Surgery
SC Otorhinolaryngology; Surgery
GA AZ1AQ
UT WOS:000347973300018
PM 25375245
ER
PT J
AU Abarca, SF
Montgomery, MT
AF Abarca, Sergio F.
Montgomery, Michael T.
TI Are Eyewall Replacement Cycles Governed Largely by Axisymmetric Balance
Dynamics?
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Article
DE Hurricanes; typhoons
ID SECONDARY EYEWALL
AB The authors question the widely held view that radial contraction of a secondary eyewall during an eyewall replacement cycle is well understood and governed largely by the classical theory of axisymmetric balance dynamics. The investigation is based on a comparison of the secondary circulation and derived tangential wind tendency between a full-physics simulation and the Sawyer-Eliassen balance model. The comparison is made at a time when the full-physics model exhibits radial contraction of the secondary eyewall during a canonical eyewall replacement cycle. It is shown that the Sawyer-Eliassen model is unable to capture the phenomenology of secondary eyewall radial contraction because it predicts a net spindown of the boundary layer tangential winds and does not represent the boundary layer spinup mechanism that has been articulated in recent work.
C1 [Abarca, Sergio F.; Montgomery, Michael T.] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Abarca, SF (reprint author), Naval Postgrad Sch, 589 Dyer Rd,Root Hall,Room 254, Monterey, CA 93943 USA.
EM sergio.abarca.fuente@gmail.com
FU National Science Foundation [AGS 0733380, IAA-1313948]; National
Research Council (NRC) through its Research Associateship Program;
National Research Council (NRC) through its host institution; Naval
Postgraduate School (NPS) in Monterey, California
FX This work was supported in part by National Science Foundation Awards
AGS 0733380 and IAA-1313948. Sergio F. Abarca gratefully acknowledges
the support from the National Research Council (NRC) through its
Research Associateship Program, and the host institution, the Naval
Postgraduate School (NPS) in Monterey, California. The authors thank
Professor Roger Smith for reading a draft of the manuscript and offering
suggestions that helped clarify the presentation.
NR 15
TC 5
Z9 5
U1 0
U2 1
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-4928
EI 1520-0469
J9 J ATMOS SCI
JI J. Atmos. Sci.
PD JAN
PY 2015
VL 72
IS 1
BP 82
EP 87
DI 10.1175/JAS-D-14-0151.1
PG 6
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AY1WA
UT WOS:000347378900006
ER
PT J
AU Xu, Q
Wei, L
Jin, Y
Zhao, QY
Cao, J
AF Xu, Qin
Wei, Li
Jin, Yi
Zhao, Qingyun
Cao, Jie
TI A Dynamically Constrained Method for Determining the Vortex Centers of
Tropical Cyclones Predicted by High-Resolution Models
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Article
DE Hurricanes; Variational analysis; Diagnostics
ID INITIALIZATION SCHEME; RELOCATION; SYSTEM
AB This paper proposes a new method to properly define and accurately determine the vortex center of a model-predicted tropical cyclone (TC) from a dynamic perspective. Ideally, a dynamically determined TC vortex center should maximize the gradient wind balance or, equivalently, minimize the gradient wind imbalance measured by an energy norm over the TC vortex. In practice, however, such an energy norm cannot be used to easily and unambiguously determine the TC vortex center. An alternative yet practical approach is developed to dynamically and unambiguously define the TC vortex center. In this approach, the TC vortex core of near-solid-body rotation is modeled by a simple parametric vortex constrained by the gradient wind balance. Therefore, the modeled vortex can fit simultaneously the perturbation pressure and streamfunction of the TC vortex part (extracted from the model-predicted fields) over the TC vortex core area (within the radius of maximum tangential wind), while the misfit is measured by a properly defined cost function. Minimizing this cost function yields the desired dynamic optimality condition that can uniquely define the TC vortex center. Using this dynamic optimality condition, a new method is developed in the form of iterative least squares fit to accurately determine the TC vortex center. The new method is shown to be efficient and effective for finding the TC vortex center that accurately satisfies the dynamic optimality condition.
C1 [Xu, Qin] Natl Severe Storms Lab, Norman, OK 73072 USA.
[Wei, Li] Univ Oklahoma, Cooperat Inst Mesoscale Meteorol Studies, Norman, OK 73019 USA.
[Jin, Yi; Zhao, Qingyun] Naval Res Lab, Marine Meteorol Div, Monterey, CA USA.
[Cao, Jie] Chinese Acad Sci, Inst Atmospher Phys, Beijing, Peoples R China.
RP Xu, Q (reprint author), Natl Severe Storms Lab, 120 David L Boren Blvd, Norman, OK 73072 USA.
EM qin.xu@noaa.gov
FU ONR [N000141010778, N000141410281]; NOAA/OAR under NOAA-OU
[NA11OAR4320072]
FX The authors are thankful to Qingfu Liu and Guang-Ping Lou of NCEP,
Vincent Wood of NSSL, and anonymous reviewers for their comments and
suggestions that improved the presentation of the results. The research
was supported by the ONR Grants N000141010778 and N000141410281 to the
University of Oklahoma (OU). Funding was also provided by NOAA/OAR under
NOAA-OU Cooperative Agreement NA11OAR4320072, U.S. Department of
Commerce. The COAMPS-TC simulations were performed at the Navy DoD
Supercomputing Resource Center at Stennis, MS.
NR 21
TC 3
Z9 3
U1 0
U2 5
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-4928
EI 1520-0469
J9 J ATMOS SCI
JI J. Atmos. Sci.
PD JAN
PY 2015
VL 72
IS 1
BP 88
EP 103
DI 10.1175/JAS-D-14-0090.1
PG 16
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AY1WA
UT WOS:000347378900007
ER
PT J
AU Potter, H
Graber, HC
Williams, NJ
Collins, CO
Ramos, RJ
Drennan, WM
AF Potter, Henry
Graber, Hans C.
Williams, Neil J.
Collins, Clarence O., III
Ramos, Rafael J.
Drennan, William M.
TI In situ Measurements of Momentum Fluxes in Typhoons
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Article
DE Atmosphere-ocean interaction; Hurricanes; typhoons; Marine boundary
layer
ID HURRICANE BOUNDARY-LAYER; SEA-SURFACE ROUGHNESS; ATMOSPHERE-WAVE-OCEAN;
TROPICAL CYCLONES; TURBULENT FLUXES; SENSIBLE HEAT; WIND STRESS;
SPECTRAL CHARACTERISTICS; CBLAST-HURRICANE; ITOP 2010
AB One of the scientific objectives of the U.S. Office of Naval Research-sponsored Impact of Typhoons on the Ocean in the Pacific (ITOP) campaign was improved understanding of air-sea fluxes at high wind speeds. Here the authors present the first-ever direct measurements of momentum fluxes recorded in typhoons near the surface. Data were collected from a moored buoy over 3 months during the 2010 Pacific typhoon season. During this period, three typhoons and a tropical storm were encountered. Maximum 30-min sustained wind speeds above 26 m s(-1) were recorded. Data are presented for 1245 h of direct flux measurements. The drag coefficient shows evidence of a rolloff at wind speeds greater than 22 m s(-1), which occurred during the passage of a single typhoon. This result is in agreement with other studies but occurs at a lower wind speed than previously measured. The authors conclude that this rolloff was caused by a reduction in the turbulent momentum flux at the frequency of the peak waves during strongly forced conditions.
C1 [Potter, Henry; Graber, Hans C.; Williams, Neil J.; Collins, Clarence O., III; Ramos, Rafael J.; Drennan, William M.] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA.
RP Potter, H (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM henry.potter.ctr@nrl.navy.mil
RI Collins, Clarence/P-7384-2015;
OI Collins, Clarence/0000-0003-4553-616X; Potter, Henry/0000-0003-0142-107X
FU ONR [N0014-09-1-0392, DURIP N00014-09-0818]; NSF [OCE-0526442]
FX ITOP was funded by ONR under Grant N0014-09-1-0392. We thank this agency
for their support. We also acknowledge the contributions of Mike Rebozo
at RSMAS, Joe Gabriele and Cary Smith of Environment Canada, and the
WHOI mooring group led by John Kemp. We are also grateful for support
and assistance provided by the captains and crew of the R/V Roger
Revelle. We acknowledge additional support from NSF (Grant OCE-0526442)
for the development of the EASI buoy and ONR (Grant DURIP
N00014-09-0818) for funding construction of the second EASI buoy. We
also thank the three anonymous reviewers and the editor.
NR 47
TC 7
Z9 9
U1 0
U2 16
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-4928
EI 1520-0469
J9 J ATMOS SCI
JI J. Atmos. Sci.
PD JAN
PY 2015
VL 72
IS 1
BP 104
EP 118
DI 10.1175/JAS-D-14-0025.1
PG 15
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AY1WA
UT WOS:000347378900008
ER
PT J
AU Wang, Z
Leary, DH
Malanoski, AP
Li, RW
Hervey, WJ
Eddie, BJ
Tender, GS
Yanosky, SG
Vora, GJ
Tender, LM
Lin, B
Strycharz-Glaven, SM
AF Wang, Zheng
Leary, Dagmar H.
Malanoski, Anthony P.
Li, Robert W.
Hervey, W. Judson
Eddie, Brian J.
Tender, Gabrielle S.
Yanosky, Shelley G.
Vora, Gary J.
Tender, Leonard M.
Lin, Baochuan
Strycharz-Glaven, Sarah M.
TI A Previously Uncharacterized, Nonphotosynthetic Member of the
Chromatiaceae Is the Primary CO2-Fixing Constituent in a
Self-Regenerating Biocathode
SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID ELECTRON-TRANSFER; MICROBIAL ELECTROSYNTHESIS; GEOBACTER-SULFURREDUCENS;
METAPROTEOMIC ANALYSES; COMMODITY CHEMICALS; MASS-SPECTROMETRY;
GENE-EXPRESSION; BACTERIA; PROTEIN; BIOFILMS
AB Biocathode extracellular electron transfer (EET) may be exploited for biotechnology applications, including microbially mediated O-2 reduction in microbial fuel cells and microbial electrosynthesis. However, biocathode mechanistic studies needed to improve or engineer functionality have been limited to a few select species that form sparse, homogeneous biofilms characterized by little or no growth. Attempts to cultivate isolates from biocathode environmental enrichments often fail due to a lack of some advantage provided by life in a consortium, highlighting the need to study and understand biocathode consortia in situ. Here, we present metagenomic and metaproteomic characterization of a previously described biocathode biofilm (+310 mV versus a standard hydrogen electrode [SHE]) enriched from seawater, reducing O-2, and presumably fixing CO2 for biomass generation. Metagenomics identified 16 distinct cluster genomes, 15 of which could be assigned at the family or genus level and whose abundance was roughly divided between Alpha- and Gammaproteobacteria. A total of 644 proteins were identified from shotgun metaproteomics and have been deposited in the the ProteomeXchange with identifier PXD001045. Cluster genomes were used to assign the taxonomic identities of 599 proteins, with Marinobacter, Chromatiaceae, and Labrenzia the most represented. RubisCO and phosphoribulokinase, along with 9 other Calvin-Benson-Bassham cycle proteins, were identified from Chromatiaceae. In addition, proteins similar to those predicted for iron oxidation pathways of known iron-oxidizing bacteria were observed for Chromatiaceae. These findings represent the first description of putative EET and CO2 fixation mechanisms for a self-regenerating, self-sustaining multispecies biocathode, providing potential targets for functional engineering, as well as new insights into biocathode EET pathways using proteomics.
C1 [Wang, Zheng; Leary, Dagmar H.; Malanoski, Anthony P.; Hervey, W. Judson; Vora, Gary J.; Tender, Leonard M.; Lin, Baochuan; Strycharz-Glaven, Sarah M.] Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
[Li, Robert W.] ARS, USDA, Anim Genom & Improvement Lab, Beltsville, MD USA.
[Eddie, Brian J.; Tender, Gabrielle S.] CALTECH, Pasadena, CA 91125 USA.
[Yanosky, Shelley G.] Amer Soc Engn Educ, Washington, DC USA.
RP Strycharz-Glaven, SM (reprint author), Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
EM sarah.glaven@nrl.navy.mil
RI Lin, Baochuan/A-8390-2009; Malanoski, Anthony/C-7814-2011;
OI Lin, Baochuan/0000-0002-9484-0785; Malanoski,
Anthony/0000-0001-6192-888X; Vora, Gary/0000-0002-0657-8597; Eddie,
Brian/0000-0002-3559-3892
FU Office of Naval Research via U.S. NRL core funds [N0001413WX20995,
N0001414WX20485, N0001414WX20518]
FX This work was funded by the Office of Naval Research via U.S. NRL core
funds, as well as under the following award numbers (to S.M.S.-G.):
N0001413WX20995, N0001414WX20485, and N0001414WX20518.
NR 72
TC 15
Z9 16
U1 7
U2 66
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0099-2240
EI 1098-5336
J9 APPL ENVIRON MICROB
JI Appl. Environ. Microbiol.
PD JAN
PY 2015
VL 81
IS 2
BP 699
EP 712
DI 10.1128/AEM.02947-14
PG 14
WC Biotechnology & Applied Microbiology; Microbiology
SC Biotechnology & Applied Microbiology; Microbiology
GA AY1UL
UT WOS:000347377500026
PM 25398855
ER
PT J
AU Secrest, NJ
Satyapal, S
Gliozzi, M
Rothberg, B
Ellison, SL
Mowry, WS
Rosenberg, JL
Fischer, J
Schmitt, H
AF Secrest, N. J.
Satyapal, S.
Gliozzi, M.
Rothberg, B.
Ellison, S. L.
Mowry, W. S.
Rosenberg, J. L.
Fischer, J.
Schmitt, H.
TI AN OPTICALLY OBSCURED AGN IN A LOW MASS, IRREGULAR DWARF GALAXY: A
MULTI-WAVELENGTH ANALYSIS OF J1329+3234
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE black hole physics; galaxies: active; galaxies: dwarf; infrared:
galaxies; X-rays: galaxies
ID ACTIVE GALACTIC NUCLEI; X-RAY SOURCES; DIGITAL SKY SURVEY; STAR-FORMING
GALAXIES; EMISSION-LINE GALAXIES; CARTWHEEL RING GALAXY; BLACK-HOLES;
BULGELESS GALAXIES; SEYFERT-GALAXIES; RADIO GALAXIES
AB Supermassive black holes (SMBHs) are found ubiquitously in large, bulge-dominated galaxies throughout the local universe, yet little is known about their presence and properties in bulgeless and low-mass galaxies. This is a significant deficiency, since the mass distribution and occupation fraction of nonstellar black holes provide important observational constraints on SMBH seed formation theories and many dwarf galaxies have not undergone major mergers that would erase information on their original black hole population. Using data from the Widefield Infrared Survey Explorer, we discovered hundreds of bulgeless and dwarf galaxies that display mid-infrared signatures of extremely hot dust highly suggestive of powerful accreting massive black holes, despite having no signatures of black hole activity at optical wavelengths. Here we report, in our first follow-up X-ray investigation of this population, that the irregular dwarf galaxy J132932.41+323417.0 (z = 0.0156) contains a hard, unresolved X-ray source detected by XMM -Newton with luminosity L2-10 keV = 2.4 x 10(40) erg s(-1), over two orders of magnitude greater than that expected from star formation, strongly suggestive of the presence of an accreting massive black hole. While enhanced X-ray emission and hot dust can be produced in extremely low metallicity environments, J132932.41+323417.0 is not extremely metal poor (approximate to 40% solar). With a stellar mass of 2.0 x 10(8) M-circle dot, this galaxy is similar in mass to the Small Magellanic Cloud, and is one of the lowest mass galaxies with evidence for a massive nuclear black hole currently known.
C1 [Secrest, N. J.; Satyapal, S.; Gliozzi, M.; Rothberg, B.; Mowry, W. S.; Rosenberg, J. L.] George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA.
[Rothberg, B.] Leibniz Inst Astrophys Potsdam AIP, D-14482 Potsdam, Germany.
[Rothberg, B.] Univ Arizona, LBT Observ, Tucson, AZ 85721 USA.
[Ellison, S. L.] Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 1A1, Canada.
[Fischer, J.; Schmitt, H.] Remote Sensing Div, Naval Res Lab, Washington, DC 20375 USA.
RP Secrest, NJ (reprint author), George Mason Univ, Dept Phys & Astron, MS 3F3,4400 Univ Dr, Fairfax, VA 22030 USA.
OI Fischer, Jacqueline/0000-0001-6697-7808
FU Chandra Guest Investigator Program under NASA [G01-12126X]; NSF-AST
[000167932]; Office of Naval Research
FX We thank the anonymous referee for a very thorough and considered review
that significantly improved the quality of this paper. N.J.S. and S.S.
gratefully acknowledge support by the Chandra Guest Investigator Program
under NASA Grant G01-12126X. J.L.R. acknowledges support from NSF-AST
000167932. Basic research in astronomy at the Naval Research Laboratory
is funded by the Office of Naval Research.
NR 73
TC 11
Z9 11
U1 0
U2 1
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 1
PY 2015
VL 798
IS 1
AR 38
DI 10.1088/0004-637X/798/1/38
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AX9TO
UT WOS:000347245100035
ER
PT J
AU Wang, YM
Colaninno, RC
Baranyi, T
Li, J
AF Wang, Y. -M.
Colaninno, R. C.
Baranyi, T.
Li, J.
TI ACTIVE-REGION TILT ANGLES: MAGNETIC VERSUS WHITE-LIGHT DETERMINATIONS OF
JOY'S LAW
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: activity; Sun: faculae, plages; Sun: magnetic fields; Sun:
photosphere; sunspots
ID FLUX TRANSPORT DYNAMO; SUNSPOT GROUPS; SOLAR SURFACE; SUN; FIELDS;
CYCLE; MODEL; EVOLUTION; ROTATION; LATITUDE
AB The axes of solar active regions are inclined relative to the east-west direction, with the tilt angle tending to increase with latitude ("Joy's law"). Observational determinations of Joy's law have been based either on white-light images of sunspot groups or on magnetograms, where the latter have the advantage of measuring directly the physically relevant quantity (the photospheric field), but the disadvantage of having been recorded routinely only since the mid-1960s. White-light studies employing the historical Mount Wilson (MW) database have yielded tilt angles that are smaller and that increase less steeply with latitude than those obtained from magnetic data. We confirm this effect by comparing sunspot-group tilt angles from the Debrecen Photoheliographic Database with measurements made by Li and Ulrich using MW magnetograms taken during cycles 21-23. Whether white-light or magnetic data are employed, the median tilt angles significantly exceed the mean values, and provide a better characterization of the observed distributions. The discrepancy between the white-light and magnetic results is found to have two main sources. First, a substantial fraction of the white-light "tilt angles" refer to sunspots of the same polarity. Of greater physical significance is that the magnetograph measurements include the contribution of plage areas, which are invisible in white-light images but tend to have greater axial inclinations than the adjacent sunspots. Given the large uncertainties inherent in both the white-light and the magnetic measurements, it remains unclear whether any systematic relationship exists between tilt angle and cycle amplitude during cycles 16-23.
C1 [Wang, Y. -M.; Colaninno, R. C.] US Navy, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Baranyi, T.] Hungarian Acad Sci, Res Ctr Astron & Earth Sci, Heliophys Observ, H-4010 Debrecen, Hungary.
[Li, J.] Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA.
RP Wang, YM (reprint author), US Navy, Res Lab, Div Space Sci, Washington, DC 20375 USA.
EM yi.wang@nrl.navy.mil; robin.colaninno@nrl.navy.mil;
baranyi@tigris.unideb.hu; jli@igpp.ucla.edu
OI Colaninno, Robin/0000-0002-3253-4205
FU Office of Naval Research; European Community's Seventh Framework
Programme (project eHEROES)
FX We thank the referee for comments, and G. Chintzoglou, J. S. Morrill, K.
Muglach, N. R. Sheeley, Jr., D. G. Socker, R. K. Ulrich, and the
participants of the International Space Science Institute Workshop on
"The Solar Activity Cycle: Physical Causes and Consequences" for helpful
discussions. We are also indebted to the Debrecen Heliophysical
Observatory, MW/UCLA, and NSO/KP for providing the data used in this
investigation, which was funded by the Office of Naval Research and by
the European Community's Seventh Framework Programme (project eHEROES).
NR 49
TC 5
Z9 5
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 1
PY 2015
VL 798
IS 1
AR 50
DI 10.1088/0004-637X/798/1/50
PG 14
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AX9TO
UT WOS:000347245100047
ER
PT J
AU Haq, R
Aras, R
Besachio, DA
Borgie, RC
Audette, MA
AF Haq, Rabia
Aras, Rifat
Besachio, David A.
Borgie, Roderick C.
Audette, Michel A.
TI 3D lumbar spine intervertebral disc segmentation and compression
simulation from MRI using shape-aware models
SO INTERNATIONAL JOURNAL OF COMPUTER ASSISTED RADIOLOGY AND SURGERY
LA English
DT Article
DE Lumbar intervertebral disc; Herniated disc; Active surface models; Disc
compression
ID LOW-BACK-PAIN; DEGENERATION; MESHES
AB More accurate and robust image segmentations are needed for identification of spine pathologies and to assist with spine surgery planning and simulation. A framework for 3D segmentation of healthy and herniated intervertebral discs from T2-weighted magnetic resonance imaging was developed that exploits weak shape priors encoded in simplex mesh active surface models.
Weak shape priors inherent in simplex mesh deformable models have been exploited to automatically segment intervertebral discs. An ellipsoidal simplex template mesh was initialized within the disc image boundary through affine landmark-based registration and was allowed to deform according to image gradient forces. Coarse-to-fine multi-resolution approach was adopted in conjunction with decreasing shape memory forces to accurately capture the disc boundary. User intervention is allowed to turn off the shape feature and guide model deformation when the internal simplex shape memory influence hinders detection of pathology. A resulting surface mesh was utilized for disc compression simulation under gravitational and weight loads using Simulation Open Framework Architecture. For testing, 16 healthy discs were automatically segmented, and five pathological discs were segmented with minimal supervision.
Segmentation results were validated against expert guided segmentation and demonstrate mean absolute shape distance error of 1 mm. Healthy intervertebral disc compression simulation resulted in a bulging disc under vertical pressure of 100 N/cm.
This study presents the application of a simplex active surface model featuring weak shape priors for 3D segmentation of healthy as well as herniated discs. A framework was developed that enables the application of shape priors in the healthy part of disc anatomy, with user intervention when the priors were inapplicable. The surface-mesh-based segmentation method is part of a processing pipeline for anatomical modelling to support interactive surgery simulation.
C1 [Haq, Rabia; Aras, Rifat; Audette, Michel A.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Besachio, David A.; Borgie, Roderick C.] Naval Med Ctr Portsmouth, Portsmouth, VA USA.
RP Haq, R (reprint author), Old Dominion Univ, Norfolk, VA 23529 USA.
EM rhaqx001@odu.edu; raras001@odu.edu; David.Besachio@med.navy.mil;
Roderick.Borgie@med.navy.mil; maudette@odu.edu
NR 25
TC 6
Z9 6
U1 2
U2 4
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1861-6410
EI 1861-6429
J9 INT J COMPUT ASS RAD
JI Int. J. Comput. Assist. Radiol. Surg.
PD JAN
PY 2015
VL 10
IS 1
BP 45
EP 54
DI 10.1007/s11548-014-1094-9
PG 10
WC Engineering, Biomedical; Radiology, Nuclear Medicine & Medical Imaging;
Surgery
SC Engineering; Radiology, Nuclear Medicine & Medical Imaging; Surgery
GA AY2IU
UT WOS:000347413500005
PM 24996394
ER
PT J
AU Moran, D
AF Moran, Daniel
TI Knife Fights: A Memoir of Modern War in Theory and Practice
SO JOURNAL OF MILITARY HISTORY
LA English
DT Book Review
C1 [Moran, Daniel] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Moran, D (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU SOC MILITARY HISTORY
PI LEXINGTON
PA C/O VIRGINIA MILITARY INST, GEORGE C MARSHALL LIBRARY, LEXINGTON, VA
24450-1600 USA
SN 0899-3718
EI 1543-7795
J9 J MILITARY HIST
JI J. Mil. Hist.
PD JAN
PY 2015
VL 79
IS 1
BP 265
EP 266
PG 2
WC History
SC History
GA AY0ED
UT WOS:000347269600061
ER
PT J
AU Willingham, D
Naes, BE
Fahey, AJ
AF Willingham, D.
Naes, B. E.
Fahey, A. J.
TI Validating mass spectrometry measurements of nuclear materials via a
non-contact volume analysis method of ion sputter craters
SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
LA English
DT Article
DE Secondary ion mass spectrometry; Sputter yield; Useful yield; Uranium
ID DEPTH PROFILES; ISOTOPE RATIOS; CAMECA IMS-4F; ICP-MS; SIMS; SURFACE;
SILICON; ENERGY; IONIZATION; PARTICLES
AB A combination of secondary ion mass spectrometry, optical profilometry and a statistically-driven algorithm was used to develop a non-contact volume analysis method to validate the useful yields of nuclear materials. The volume analysis methodology was applied to ion sputter craters created in silicon and uranium substrates sputtered by 18.5 keV O- and 6.0 keV Ar+ ions. Sputter yield measurements were determined from the volume calculations and were shown to be comparable to Monte Carlo calculations and previously reported experimental observations. Additionally, the volume calculations were used to determine the useful yields of Si+, SiO+ and SiO2 (+) ions from the silicon substrate and U+, UO+ and UO2 (+) ions from the uranium substrate under 18.5 keV O- and 6.0 keV Ar+ ion bombardment. This work represents the first steps toward validating the interlaboratory and cross-platform performance of mass spectrometry for the analysis of nuclear materials.
C1 [Willingham, D.; Naes, B. E.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Fahey, A. J.] US Naval Res Lab, Washington, DC 20375 USA.
RP Willingham, D (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA.
EM david.willingham@pnnl.gov
RI Fahey, Albert/C-5611-2015;
OI Willingham, David/0000-0002-7166-8994
NR 42
TC 0
Z9 0
U1 1
U2 15
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0236-5731
EI 1588-2780
J9 J RADIOANAL NUCL CH
JI J. Radioanal. Nucl. Chem.
PD JAN
PY 2015
VL 303
IS 1
BP 655
EP 662
DI 10.1007/s10967-014-3313-9
PG 8
WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science &
Technology
SC Chemistry; Nuclear Science & Technology
GA AY0OB
UT WOS:000347294600074
ER
PT J
AU O'Keeffe, SC
Tang, S
Kopacz, AM
Smith, J
Rowenhorst, DJ
Spanos, G
Liu, WK
Olson, GB
AF O'Keeffe, Stephanie Chan
Tang, Shan
Kopacz, Adrian M.
Smith, Jacob
Rowenhorst, David J.
Spanos, George
Liu, Wing Kam
Olson, Gregory B.
TI Multiscale ductile fracture integrating tomographic characterization and
3-D simulation
SO ACTA MATERIALIA
LA English
DT Article
DE Ductile fracture; 3-D characterization; Multiscale simulations; Crack
propagation; Serial sectioning
ID MULTIRESOLUTION CONTINUUM; STRENGTH STEELS; VOLUME FRACTION; PLASTICITY;
FAILURE; MODEL; TOUGHNESS; MECHANISM
AB Ductile fracture in alloys is a multiscale process in which primary voids formed at micron-scale particles coalesce by a zig-zag pattern of shear localization driven by finer-scale microvoiding at submicron-scale secondary particles. Employing the method of serial sectioning, unprecedented 3-D microstructural reconstructions of steel crack-tip process zones are obtained and implemented into a large-scale simulation for ductile fracture analysis. A quantitative understanding of the microvoid sheeting mechanism and mixed-mode failure controlling the zig-zag fracture surface are presented using the modeling technique utilized herein. We define and quantify metrics of fracture by analyzing the crack opening distance, process zone size, zig-zag wavelength and void growth ratios in the crack tip reconstructions. The quantitative agreement of these metrics between experiment and simulation supports a new and developing predictive structure/property theory to enable materials design. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [O'Keeffe, Stephanie Chan; Olson, Gregory B.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
[Tang, Shan; Kopacz, Adrian M.; Smith, Jacob; Liu, Wing Kam] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA.
[Rowenhorst, David J.] Multifunct Mat Branch, Naval Res Lab, Washington, DC 20375 USA.
[Spanos, George] Minerals Met & Mat Soc, Warrendale, PA 15086 USA.
[Liu, Wing Kam] King Abdulaziz Univ, Distinguished Scientists Program Comm, Jeddah 21413, Saudi Arabia.
RP Liu, WK (reprint author), Northwestern Univ, Dept Mech Engn, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM w-liu@northwestern.edu; g-olson@northwestem.edu
RI Olson, Gregory/B-7529-2009; Liu, Wing/B-7599-2009
FU ONR/DARPA; National Science Foundation Graduate Research Fellowship
Program
FX The authors would like to acknowledge the financial support from the
ONR/DARPA-sponsored Dynamic 3-Dimensional Digital Structures ("D3D")
Program (Program Manager: Dr. Julie Christodoulou) and the National
Science Foundation Graduate Research Fellowship Program.
NR 36
TC 5
Z9 5
U1 3
U2 21
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 1
PY 2015
VL 82
BP 503
EP 510
DI 10.1016/j.actamat.2014.09.016
PG 8
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA AX6FE
UT WOS:000347017800047
ER
PT J
AU Zhang, W
Liu, WX
Wang, X
Liu, LM
Ferrese, F
AF Zhang, Wei
Liu, Wenxin
Wang, Xin
Liu, Liming
Ferrese, Frank
TI Online Optimal Generation Control Based on Constrained Distributed
Gradient Algorithm
SO IEEE TRANSACTIONS ON POWER SYSTEMS
LA English
DT Article
DE Distributed control system; distributed gradient algorithm; N-1 rule;
online optimal generation control
ID ECONOMIC-DISPATCH; POWER-SYSTEMS; FUTURE; OPTIMIZATION; FREQUENCY;
CONSENSUS; NETWORK
AB In traditional power system, economic dispatch and generation control are separately applied. Online generation adjustment is necessary to regulate generation reference for real-time control to realize economic operation of power systems. Since most economic dispatch solutions are centralized, they are usually expensive to implement, susceptible to single-point-failures, and inflexible. To address the above-mentioned problems, this paper proposed a multi-agent system based distributed control solution that can realize optimal generation control. The solution is designed based upon an improved distributed gradient algorithm, which can address both equality and inequality constraints. To improve the reliability of multi-agent system, the N - 1 rule is introduced to design the communication network topology. Compared with centralized solutions, the distributed control solution not only can achieve comparable solutions but also can respond timely when the systemexperiences change of operating conditions. MAS based real-time simulation results demonstrate the effectiveness of the proposed solution.
C1 [Zhang, Wei] Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Heilongjiang, Peoples R China.
[Liu, Wenxin] New Mexico State Univ, Klipsch Sch Elect & Comp Engn, Las Cruces, NM 88001 USA.
[Wang, Xin] Shanghai Jiao Tong Univ, Ctr Elect & Elect Technol, Shanghai 200030, Peoples R China.
[Liu, Liming] ABB Inc, Raleigh, NC 27606 USA.
[Ferrese, Frank] Naval Surface Warfare Ctr, Carderock Div, Philadelphia, PA 19112 USA.
RP Zhang, W (reprint author), Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Heilongjiang, Peoples R China.
FU U.S. National Science Foundation under Grant ECCS [1125776]; U.S. Office
of Naval Research [N000141310161]
FX This work was supported in part by the U.S. National Science Foundation
under Grant ECCS #1125776 and in part by the U.S. Office of Naval
Research under Grant N000141310161. Paper no. TPWRS-00452-2013.
NR 42
TC 25
Z9 28
U1 2
U2 18
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0885-8950
EI 1558-0679
J9 IEEE T POWER SYST
JI IEEE Trans. Power Syst.
PD JAN
PY 2015
VL 30
IS 1
BP 35
EP 45
DI 10.1109/TPWRS.2014.2319315
PG 11
WC Engineering, Electrical & Electronic
SC Engineering
GA AX1WM
UT WOS:000346734000004
ER
PT J
AU Brownell, CJ
AF Brownell, Cody J.
TI Measurement of infiltration heat recovery in a test cell with high flow
rates
SO JOURNAL OF BUILDING PHYSICS
LA English
DT Article
DE Infiltration; heat recovery; air leakage; building envelope; building
energy use
AB Infiltration heat recovery is the process that occurs when a building envelope acts as a heat exchanger for infiltrating air. This heat recovery process results in a reduced heat loss compared to predictions that use only flow rate and the total difference in enthalpy between inside and outside air. A series of experiments show the relationship between infiltration flow rate and heat loss in a test cell, with an emphasis on the high flow rate regime. A 3.5-m(3) test cell was built with standard light-frame construction and one removable panel, to allow testing of wall sections with different engineered flow path lengths. Experiments were conducted with two different wall sections and at six different infiltration flow rates. Experimentally determined heat recovery factors are compared to computational fluid dynamics and agree to within approximately 15%.
C1 US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
RP Brownell, CJ (reprint author), US Naval Acad, Dept Mech Engn, 590 Holloway Rd Stop 11-C, Annapolis, MD 21402 USA.
EM brownell@usna.edu
NR 7
TC 0
Z9 0
U1 2
U2 3
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1744-2591
EI 1744-2583
J9 J BUILD PHYS
JI J. Build Phys.
PD JAN
PY 2015
VL 38
IS 4
BP 350
EP 359
DI 10.1177/1744259114522117
PG 10
WC Construction & Building Technology
SC Construction & Building Technology
GA AX5WG
UT WOS:000346994900004
ER
PT J
AU Papadas, I
Christodoulides, JA
Kioseoglou, G
Armatas, GS
AF Papadas, Ioannis
Christodoulides, Joseph A.
Kioseoglou, George
Armatas, Gerasimos S.
TI A high surface area ordered mesoporous BiFeO3 semiconductor with
efficient water oxidation activity
SO JOURNAL OF MATERIALS CHEMISTRY A
LA English
DT Article
ID LIGHT PHOTOCATALYTIC PROPERTIES; VISIBLE-LIGHT; NANOPARTICLES;
IRRADIATION; CARBON; NANOCOMPOSITES; DEGRADATION; ADSORPTION; MECHANISM;
CATALYSTS
AB Bismuth ferrite (BiFeO3) is an important multiferroic oxide material because of its unique magnetic and ferroelectric properties. Here, we synthesize for the first time a highly ordered mesoporous BiFeO3 semiconductor using tartaric acid-assisted growth of the BiFeO3 compound inside the pores of a carbon template. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and N-2 physisorption measurements reveal that the template-free material possesses a three-dimensional hexagonal mesostructure with a Large internal BET surface area (141 m(2) g(-1)) and narrow sized pores (ca. 4 nm). Aka, the pore was comprise single-phase BiFeO3 nanocrystals according to the high-resolution TEM, electron diffraction and magnetic experiments. The mesoporous BiFeO3 shows high activity for the photocatalytic oxygen evolution reaction (OER) under UV-visible Light (lambda > 380 nm), affording an average oxygen evolution rate of 66 mu mol h(-1) g(-1). We also show that the propensity of photogenerated hales for the OER can be significanty enhanced when 1 wt% Au nanoparticles are deposited on the BiFeO3 surface. The Au/BiFeO3 heterostructure exerts excellent OER activity (586 mu mol h(-1) g(-1)) and Long-term cycling stability, raising the possibility for the design of effective and robust OER photocatalysts.
C1 [Papadas, Ioannis; Kioseoglou, George; Armatas, Gerasimos S.] Univ Crete, Dept Mat Sci & Technol, Iraklion 71003, Crete, Greece.
[Christodoulides, Joseph A.] Naval Res Lab, Washington, DC 20375 USA.
RP Armatas, GS (reprint author), Univ Crete, Dept Mat Sci & Technol, Iraklion 71003, Crete, Greece.
EM garmatas@materials.uoc.gr
RI Armatas, Gerasimos/F-4753-2011;
OI Armatas, Gerasimos/0000-0001-9475-1929; Papadas,
Ioannis/0000-0003-4718-1411
FU Greek Ministry of Education; European Union under ERC grant
(MESOPOROUS-NPs) [MIS 374071]; THALES project [MIS 377064]
FX Financial support from the Greek Ministry of Education and the European
Union under the ERC grant (MESOPOROUS-NPs, MIS 374071) and the THALES
project (MIS 377064) is gratefully acknowledged. We thank Prof. I.
Konstantinou and Dr M. Antonopoulou (Environmental and Natural Resources
Management Department, University of Patras) for help with handling the
elemental CHN data.
NR 48
TC 20
Z9 20
U1 15
U2 126
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 2015
VL 3
IS 4
BP 1587
EP 1593
DI 10.1039/c4ta05272b
PG 7
WC Chemistry, Physical; Energy & Fuels; Materials Science,
Multidisciplinary
SC Chemistry; Energy & Fuels; Materials Science
GA AX4MH
UT WOS:000346906100029
ER
PT J
AU Mori, K
Lee, EW
Frazier, WE
Niji, K
Battel, G
Tran, A
Iriarte, E
Perez, O
Ruiz, H
Choi, T
Stoyanov, P
Ogren, J
Alrashaid, J
Es-Said, OS
AF Mori, K.
Lee, E. W.
Frazier, W. E.
Niji, K.
Battel, G.
Tran, A.
Iriarte, E.
Perez, O.
Ruiz, H.
Choi, T.
Stoyanov, P.
Ogren, J.
Alrashaid, J.
Es-Said, O. S.
TI Effect of Tempering and Baking on the Charpy Impact Energy of
Hydrogen-Charged 4340 Steel
SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
LA English
DT Article
DE 4340 steel; baking; charpy impact test; hydrogen charging
AB Tempered AISI 4340 steel was hydrogen charged and tested for impact energy. It was found that samples tempered above 468 A degrees C (875 A degrees F) and subjected to hydrogen charging exhibited lower impact energy values when compared to uncharged samples. No significant difference between charged and uncharged samples tempered below 468 A degrees C (875 A degrees F) was observed. Neither exposure nor bake time had any significant effect on impact energy within the tested ranges.
C1 [Mori, K.; Tran, A.; Iriarte, E.; Perez, O.; Ruiz, H.; Choi, T.; Stoyanov, P.; Ogren, J.; Alrashaid, J.; Es-Said, O. S.] Loyola Marymount Univ, Dept Mech Engn, Los Angeles, CA 90045 USA.
[Lee, E. W.; Frazier, W. E.] Naval Air Warfare Ctr, Div Aircraft, Patuxent River, MD 20670 USA.
[Niji, K.; Battel, G.] Moog Inc, Torrance, CA 90501 USA.
RP Es-Said, OS (reprint author), Loyola Marymount Univ, Dept Mech Engn, Los Angeles, CA 90045 USA.
EM oessaid@lmu.edu
FU National Science Foundation Research Experience for Undergraduates, NSF
[EEC-0353668]
FX This work was funded by the National Science Foundation Research
Experience for Undergraduates, NSF Grant #EEC-0353668. The authors
appreciate the helpful comments and discussion from Dr. Sergiy Kalnaus
of Oak Ridge National Laboratory.
NR 31
TC 3
Z9 3
U1 4
U2 9
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1059-9495
EI 1544-1024
J9 J MATER ENG PERFORM
JI J. Mater. Eng. Perform.
PD JAN
PY 2015
VL 24
IS 1
BP 329
EP 337
DI 10.1007/s11665-014-1268-1
PG 9
WC Materials Science, Multidisciplinary
SC Materials Science
GA AX6KG
UT WOS:000347030600035
ER
PT J
AU Qiao, JC
Casalini, R
Pelletier, JM
AF Qiao, J. C.
Casalini, R.
Pelletier, J. M.
TI Main (alpha) relaxation and excess wing in Zr50Cu40Al10 bulk metallic
glass investigated by mechanical spectroscopy
SO JOURNAL OF NON-CRYSTALLINE SOLIDS
LA English
DT Article; Proceedings Paper
CT 7th International Discussion Meeting on Relaxations in Complex Systems
(IDMRCS)
CY JUL 21-26, 2013
CL Univ Politecnica Catalunya, Barcelona, SPAIN
SP Energia Campus Int Excellence, Barcelona Knowledge Campus, Inst Laue Langevin, Julich Forschungszentrum, CNRS, Lab Leon Brillouin, Int Dielectr Soc, AirLiquide, Almirall, Bruker, Extrasolution, Matgas, Mettler Toledo, Novocontrol Technologies, TA Instruments, Polish Acad Sci, Inst High Pressure Phys
HO Univ Politecnica Catalunya
DE Metallic glass; Mechanical spectroscopy; Main relaxation; Excess wing;
Fragility
ID FORMING LIQUIDS; BETA-RELAXATION; ELASTIC MODELS; TEMPERATURE;
TRANSITION; VISCOSITY; STABILITY; FORMERS; ALLOYS
AB The dynamic mechanical relaxation behaviour of Zr50Cu40Al10 bulk metallic glass was investigated by mechanical spectroscopy as a function of temperature. The mechanical spectra show the evidence of an "excess wing" process at the lower temperatures. The alpha-relaxation spectra of Zr50Cu40Al10 bulk metallic glass was described with a Kohlrausch-Williams-Watts (KWW) function, with the exponent beta(Kww) = 0.5 +/- 0.02. The fragility parameter m of the Zr50Cu40Al10 is m = 57 +/- 5. The values of m and beta K-ww are found to agree with the correlation found for other glasses m = 250(+/- 30) - 320 beta K-ww [R. Bohmer, K.L. Ngai, C.A. Angell et al. J. Chem. Phys. 99 (1993) 4201-4209]. Aging experiments give strong evidence that the observed "excess wing" is a submerged secondary process and not part of the or process. (C)2014 Elsevier B.V. All rights reserved.
C1 [Qiao, J. C.; Pelletier, J. M.] Univ Lyon, CNRS, Lyon, France.
[Qiao, J. C.; Pelletier, J. M.] MATEIS, INSA Lyon, UMR5510, F-69621 Villeurbanne, France.
[Casalini, R.] Naval Res Lab, Div Chem, Washington, DC 20375 USA.
RP Pelletier, JM (reprint author), Univ Lyon, MATEIS, INSA Lyon, UMR CNRS5510, Bat B Pascal, F-69621 Villeurbanne, France.
EM jean-marc.pelletier@insa-lyon.fr
NR 37
TC 3
Z9 3
U1 2
U2 24
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3093
EI 1873-4812
J9 J NON-CRYST SOLIDS
JI J. Non-Cryst. Solids
PD JAN 1
PY 2015
VL 407
SI SI
BP 106
EP 109
DI 10.1016/j.jnoncrysol.2014.08.009
PG 4
WC Materials Science, Ceramics; Materials Science, Multidisciplinary
SC Materials Science
GA AX6FJ
UT WOS:000347018300016
ER
PT J
AU Wang, A
Martin-Horcajo, S
Tadjer, MJ
Calle, F
AF Wang, Ashu
Martin-Horcajo, Sara
Tadjer, Marko J.
Calle, Fernando
TI Simulation of temperature and electric field-dependent barrier traps
effects in AlGaN/GaN HEMTs
SO SEMICONDUCTOR SCIENCE AND TECHNOLOGY
LA English
DT Article
DE AlGaN/GaN HEMTs; reverse gate current; barrier traps
ID MOLECULAR-BEAM EPITAXY; CURRENT TRANSPORT MECHANISM; LEAKAGE CURRENT
MECHANISMS; ASSISTED TUNNELING MODEL; MOBILITY TRANSISTORS; GATE
LEAKAGE; GAN; EMISSION; OXIDES
AB We considered electron trapping and detrapping processes in the AlGaN barrier of AlGaN/GaN high electron mobility transistors as that trapping is the process of electrons directly tunneling from the gate metal into the AlGaN barrier traps while detrapping is electrons emission from the traps into the AlGaN conduction band by phonon-assisted tunneling. By fully coupling the electron emission characteristic time with the device thermal and electrical behavior, simulations were performed to comprehensively analyze the contributions of device bias, accounting for self-heating and electric field dependent electron detrapping. Discussions on the current-transient method for traps characterization based on these simulations and impact of traps-dependent reverse gate current on drain current collapse are presented.
C1 [Wang, Ashu; Martin-Horcajo, Sara; Calle, Fernando] Univ Politecn Madrid, ETSI Telecomun, ISOM, E-28040 Madrid, Spain.
[Wang, Ashu; Martin-Horcajo, Sara; Calle, Fernando] Univ Politecn Madrid, ETSI Telecomun, Dept Ingn Elect, E-28040 Madrid, Spain.
[Tadjer, Marko J.] Naval Res Lab, Washington, DC 20375 USA.
RP Wang, A (reprint author), Univ Politecn Madrid, ETSI Telecomun, ISOM, E-28040 Madrid, Spain.
EM awang@isom.upm.es
OI CALLE GOMEZ, FERNANDO/0000-0001-7869-6704
FU Ministerio de Economia y Competitividad of Spain [RUE (CSD2009-0046),
CAVE (TEC2012-38247)]; American Society of Engineering Education,
Washington DC
FX This work was supported by RUE (CSD2009-0046) and CAVE (TEC2012-38247)
projects, from Ministerio de Economia y Competitividad of Spain. MJT
acknowledges partial support from the American Society of Engineering
Education, Washington DC.
NR 26
TC 1
Z9 1
U1 2
U2 28
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0268-1242
EI 1361-6641
J9 SEMICOND SCI TECH
JI Semicond. Sci. Technol.
PD JAN
PY 2015
VL 30
IS 1
AR 015010
DI 10.1088/0268-1242/30/1/015010
PG 8
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Condensed Matter
SC Engineering; Materials Science; Physics
GA AX6LH
UT WOS:000347033300011
ER
PT J
AU Melzer, JM
Winters, J
Mitchell, AO
AF Melzer, Jonathan M.
Winters, Jessica
Mitchell, Allen O.
TI Isolated adult lymphadenopathy: a rare presentation of Langerhans cell
histiocytosis
SO AMERICAN JOURNAL OF OTOLARYNGOLOGY
LA English
DT Article
ID EOSINOPHILIC GRANULOMA
AB Intro: Langerhans cell histiocytosis (LCH) is a rare disease involving the proliferation of histiocytes in one or more organ systems. The presentation of LCH is more common in the pediatric population and rarely occurs within the adult population. Isolated lymph node involvement is an extremely rare presentation of the disease. The authors present a case of isolated lymph node LCH in an otherwise healthy adult female and discuss management strategies for these unusual findings.
Methods: A case report of a patient at a tertiary care facility in June 2014 is discussed.
Results/Discussion: The diagnosis, clinical course, and management strategies for isolated adult LCH are discussed and reviewed.
Conclusion: Langerhans cell histiocytosis rarely presents with isolated lymph node involvement in adults. Management and surveillance algorithms are discussed in this unusual case of seemingly benign lymphadenopathy. Published by Elsevier Inc.
C1 [Melzer, Jonathan M.; Mitchell, Allen O.] Naval Med Ctr Portsmouth, Dept Otolaryngol Head & Neck Surg, Portsmouth, VA 23708 USA.
[Winters, Jessica] Uniformed Serv Univ Hlth Sci, F Edward Hebert Sch Med, Bethesda, MD 20814 USA.
RP Melzer, JM (reprint author), Naval Med Ctr Portsmouth, Dept Otolaryngol Head & Neck Surg, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
EM Jonathan.melzer@med.navy.mil; Jessica.winters@usuhs.edu;
Allen.mitchell@med.navy.mil
NR 13
TC 0
Z9 0
U1 0
U2 1
PU W B SAUNDERS CO-ELSEVIER INC
PI PHILADELPHIA
PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA
SN 0196-0709
EI 1532-818X
J9 AM J OTOLARYNG
JI Am. J. Otolaryngol.
PD JAN-FEB
PY 2015
VL 36
IS 1
BP 103
EP 105
DI 10.1016/j.amjoto.2014.10.016
PG 3
WC Otorhinolaryngology
SC Otorhinolaryngology
GA AX2EL
UT WOS:000346756300021
PM 25459314
ER
PT J
AU Love, CT
Baturina, OA
Swider-Lyons, KE
AF Love, Corey T.
Baturina, Olga A.
Swider-Lyons, Karen E.
TI Observation of Lithium Dendrites at Ambient Temperature and Below
SO ECS ELECTROCHEMISTRY LETTERS
LA English
DT Article
ID ION CELLS; GROWTH; ELECTRODEPOSITION; MICROSCOPY; INTERFACES;
MECHANISMS; LIQUID
AB Lithium-ion batteries are prone to failure at low temperatures and dendrite growth during charging is one suspect. We attempt to understand lithium dendrite growth by observing their number, initiation time and growth rate at ambient and sub-ambient temperatures: -10 degrees C, 5 degrees C, and 20 degrees C using an in-situ optical microscopy cell (Li-0 vertical bar Li-0). We find that while dendrites initiate quickly at -10 degrees C, the cells at 5 degrees C short-circuit most rapidly due in part to a favorable morphology at this temperature. The experimental approach has broad applicability to other electrochemical energy storage technologies where mass transport limitations are present at low temperatures, particularly Li-air, Li-S, and Zn-air batteries. (C) The Author(s) 2014. Published by ECS. All rights reserved.
C1 [Love, Corey T.; Baturina, Olga A.; Swider-Lyons, Karen E.] US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
RP Love, CT (reprint author), US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
EM corey.love@nrl.navy.mil
FU Office of Naval Research
FX The authors thank the Office of Naval Research for financial support of
this work. The authors acknowledge the assistance of Dr. Benjamin Gould
and Drew Rogers for fabrication of gaskets used to properly seal the
in-situ optical microscopy cell.
NR 19
TC 9
Z9 9
U1 13
U2 82
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
SN 2162-8726
EI 2162-8734
J9 ECS ELECTROCHEM LETT
JI ECS Electrochem. Lett.
PY 2015
VL 4
IS 2
BP A24
EP A27
DI 10.1149/2.0041502eel
PG 4
WC Electrochemistry; Materials Science, Multidisciplinary
SC Electrochemistry; Materials Science
GA AX2JN
UT WOS:000346769600002
ER
PT J
AU Adilov, N
Alexander, PJ
Cunningham, BM
AF Adilov, Nodir
Alexander, Peter J.
Cunningham, Brendan M.
TI An Economic Analysis of Earth Orbit Pollution
SO ENVIRONMENTAL & RESOURCE ECONOMICS
LA English
DT Article
DE Orbital debris; Economics of space; Space pollution
ID DEBRIS; COMMONS; SPACE
AB Space debris, an externality generated by expended launch vehicles and damaged satellites, reduces the expected value of space activities by increasing the probability of damaging existing satellites or other space vehicles. Unlike terrestrial pollution, debris created in the production process interacts with firms' final products, and is, moreover, self-propagating: collisions between debris or extant satellites creates additional debris. We construct a formal model to explore private incentives to launch satellites and to mitigate space debris. The model predicts that, relative to the social optimum, firms launch too many satellites and choose technologies which create more debris than is socially optimal. We discuss remediation strategies and policies, and demonstrate that Pigovian taxes can be used to internalize the debris externality.
C1 [Adilov, Nodir] Indiana Univ Purdue Univ, Ft Wayne, IN 46805 USA.
[Alexander, Peter J.] FCC, Washington, DC USA.
[Cunningham, Brendan M.] US Naval Acad, Annapolis, MD 21402 USA.
RP Adilov, N (reprint author), Indiana Univ Purdue Univ, Ft Wayne, IN 46805 USA.
EM adilovn@ipfw.edu
OI Alexander, Peter/0000-0002-4957-9012
NR 18
TC 1
Z9 1
U1 4
U2 12
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0924-6460
EI 1573-1502
J9 ENVIRON RESOUR ECON
JI Environ. Resour. Econ.
PD JAN
PY 2015
VL 60
IS 1
BP 81
EP 98
DI 10.1007/s10640-013-9758-4
PG 18
WC Economics; Environmental Studies
SC Business & Economics; Environmental Sciences & Ecology
GA AX2LK
UT WOS:000346775200005
ER
PT J
AU Leban, FA
Diaz-Gonzalez, J
Parker, GG
Zhao, WF
AF Leban, Frank A.
Diaz-Gonzalez, James
Parker, Gordon G.
Zhao, Weifeng
TI Inverse Kinematic Control of a Dual Crane System Experiencing Base
Motion
SO IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
LA English
DT Article
DE Control design; kinematics; motion compensation
AB For over 30 years, many active and passive antipendulation concepts have been explored for use on cranes in the marine environment. These range from simple tension member restraints to command filtering strategies and advanced feedback control laws, where both measured ship/platform motion and payload swing are required. Single crane control systems that compensate for own ship or target ship motion and payload swing damping are well developed, and have been demonstrated. Cargo transfer control is more complex when multiple ship-mounted cranes are used, representing a closed kinematic chain. However, the potential benefits include larger capacity and better load control. In this brief, an inverse kinematic control strategy is presented that uses two cranes' actuation capability (hoist lengths and boom angles) to keep its load fixed in inertial space regardless of the motion of the ship on which the cranes are mounted. An underdetermined solution is developed. Unique crane commands can then be computed using a minimum norm solution. A dynamic simulation is described for use in algorithm development and initial validation. Final verification was performed using two cranes mounted on a motion controlled platform.
C1 [Leban, Frank A.] Naval Surface Warfare Ctr, Carderock Div, Bethesda, MD 20817 USA.
[Diaz-Gonzalez, James] BMT Designers & Planners Inc, Arlington, VA 22204 USA.
[Parker, Gordon G.] Michigan Technol Univ, Houghton, MI 49931 USA.
[Zhao, Weifeng] Adv Technol & Res Corp, Columbia, MD 21046 USA.
RP Leban, FA (reprint author), Naval Surface Warfare Ctr, Carderock Div, Bethesda, MD 20817 USA.
EM frank.leban@navy.mil; jdiaz@dandp.com; ggparker@mtu.edu;
tzhao@atrcorp.com
NR 20
TC 4
Z9 4
U1 4
U2 13
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1063-6536
EI 1558-0865
J9 IEEE T CONTR SYST T
JI IEEE Trans. Control Syst. Technol.
PD JAN
PY 2015
VL 23
IS 1
BP 331
EP 339
DI 10.1109/TCST.2014.2314020
PG 9
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA AX2SN
UT WOS:000346794600029
ER
PT J
AU Erdeniz, D
Levinson, AJ
Sharp, KW
Rowenhorst, DJ
Fonda, RW
Dunand, DC
AF Erdeniz, Dinc
Levinson, Amanda J.
Sharp, Keith W.
Rowenhorst, David J.
Fonda, Richard W.
Dunand, David C.
TI Pack Aluminization Synthesis of Superalloy 3D Woven and 3D Braided
Structures
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article
ID MECHANICAL-PROPERTIES; CELLULAR METALS; ARCHITECTURED MATERIALS;
ALUMINIDE COATINGS; FLUID PERMEABILITY; BASE SUPERALLOYS; NICKEL;
MICROSTRUCTURE; DIFFUSION; FOAMS
AB Micro-architectured, precipitation-strengthened structures were created in a new process combining weaving, gas-phase alloying, diffusion, and precipitation. First, high-ductility Ni-20 wt pct Cr wires with 202 mu m diameter were braided, or non-crimp orthogonal woven, into three-dimensional structures. Second, these structures were vapor-phase alloyed with Al at 1273 K (1000 A degrees C) by pack cementation, creating uniform NiAl coatings on the wires when using a retort. Also, solid-state bonding was achieved at wire intersections, where two wires were sufficiently close to each other, as determined via optical and X-ray tomographic microscopy. Third, the NiAl-coated wires were fully homogenized and aged to form gamma' precipitates distributed in a gamma matrix phase, the same microstructure providing strength in nickel-based superalloys. The resulting structures-consisting of wires (i) woven in a controlled three-dimensional architecture, (ii) bonded at contact points and (iii) strengthened by gamma' precipitates-are expected to show high strength at ambient and elevated temperatures, low density, and high permeability which is useful for active cooling.
C1 [Erdeniz, Dinc; Dunand, David C.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
[Levinson, Amanda J.] Natl Res Council Fellow US Naval Res Lab, Washington, DC 20375 USA.
[Sharp, Keith W.] SAERTEX USA LLC, Fabr 3D, Huntersville, NC 28078 USA.
[Rowenhorst, David J.; Fonda, Richard W.] US Naval Res Lab, Microstruct Evolut & Joining Sect, Washington, DC 20375 USA.
RP Erdeniz, D (reprint author), Northwestern Univ, Dept Mat Sci & Engn, 2220 Campus Dr, Evanston, IL 60208 USA.
EM d-erdeniz@northwestern.edu
RI Dunand, David/B-7515-2009; Erdeniz, Dinc/E-8871-2010
OI Erdeniz, Dinc/0000-0002-8705-7282
FU Defense Advanced Research Projects Agency [W91CRB1010004]
FX The authors acknowledge the financial support from the Defense Advanced
Research Projects Agency under award number W91CRB1010004 (Dr. Judah
Goldwasser, program manager). They also thank Profs. Kevin Hemker,
Timothy Weihs, and James Guest (Johns Hopkins University) for useful
discussions, and Dr. Andrew Geltmacher (NRL) for his help with X-ray
micro-tomography.
NR 45
TC 5
Z9 5
U1 2
U2 18
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
EI 1543-1940
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD JAN
PY 2015
VL 46A
IS 1
BP 426
EP 438
DI 10.1007/s11661-014-2602-9
PG 13
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA AX2QI
UT WOS:000346788600046
ER
PT J
AU Griffiths, H
Cohen, L
Watts, S
Mokole, E
Baker, C
Wicks, M
Blunt, S
AF Griffiths, Hugh
Cohen, Lawrence
Watts, Simon
Mokole, Eric
Baker, Chris
Wicks, Mike
Blunt, Shannon
TI Radar Spectrum Engineering and Management: Technical and Regulatory
Issues
SO PROCEEDINGS OF THE IEEE
LA English
DT Article
DE Radar; radar transmitters; radio communication; radio broadcast
transmitters; interference
ID WAVE-FORM DESIGN; RADIO; TRANSMITTERS; STRATEGIES; NOISE; SONAR; BATS
AB The radio-frequency (RF) electromagnetic spectrum, extending from below 1 MHz to above 100 GHz, represents a precious resource. It is used for a wide range of purposes, including communications, radio and television broadcasting, radionavigation, and sensing. Radar represents a fundamentally important use of the electromagnetic (EM) spectrum, in applications which include air traffic control, geophysical monitoring of Earth resources from space, automotive safety, severe weather tracking, and surveillance for defense and security. Nearly all services have a need for greater bandwidth, which means that there will be ever-greater competition for this finite resource. The paper explains the nature of the spectrum congestion problem from a radar perspective, and describes a number of possible approaches to its solution both from technical and regulatory points of view. These include improved transmitter spectral purity, passive radar, and intelligent, cognitive approaches that dynamically optimize spectrum use.
C1 [Griffiths, Hugh] UCL, London WC1E 6BT, England.
[Cohen, Lawrence; Mokole, Eric] Naval Res Lab, Div Radar, Washington, DC 20375 USA.
[Watts, Simon] Thales, Crawley RH10 9PZ, W Sussex, England.
[Baker, Chris] Ohio State Univ, Columbus, OH 43210 USA.
[Wicks, Mike] Univ Dayton, Dayton, OH 45469 USA.
[Blunt, Shannon] Univ Kansas, Kansas City, KS 66160 USA.
RP Griffiths, H (reprint author), UCL, Mortimer St, London WC1E 6BT, England.
EM h.griffiths@ieee.org; lawrence.cohen@nrl.navy.mil;
simon.watts@uk.thalesgroup.com; eric.mokole@verizon.net;
baker@ece.osu.edu; michael.wicks@udri.udayton.edu; sdblunt@ittc.ku.edu
NR 59
TC 34
Z9 34
U1 2
U2 19
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9219
EI 1558-2256
J9 P IEEE
JI Proc. IEEE
PD JAN
PY 2015
VL 103
IS 1
BP 85
EP 102
DI 10.1109/JPROC.2014.2365517
PG 18
WC Engineering, Electrical & Electronic
SC Engineering
GA AX2JF
UT WOS:000346768700005
ER
PT J
AU Kwon, YW
Hall, BL
AF Kwon, Y. W.
Hall, B. L.
TI Analyses of cracks in thick stiffened plates repaired with single-sided
composite patch
SO COMPOSITE STRUCTURES
LA English
DT Article
DE Composite patch; Stiffened plate; Single-side patch; Thick plate; Strain
energy release rate
ID NUMERICAL-ANALYSIS; BONDED REPAIR
AB This study investigated the effect of composite patches applied to thick stiffened plates with single-sided repairs. A simplified analytical model was derived to predict the reduction in the mode I strain energy release rates resulting from the single-sided composite patches. Finite element analyses were also conducted to compute the mode I strain energy release rates with and without composite patches, and their results were compared to the analytical model prediction. Furthermore, changes in the location of the neural axis with single-side patches were examined with their effects on the effectiveness of the patch repair with variations in both material and geometric parameters of the patch and plate. The neutral axis location in the patched plate played an important role to influence the effectiveness of the composite patch. Published by Elsevier Ltd.
C1 [Kwon, Y. W.; Hall, B. L.] Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93940 USA.
RP Kwon, YW (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93940 USA.
EM ywkwon@nps.edu
FU Naval Surface Warfare Center - Carderock Division
FX This work was supported by Naval Surface Warfare Center - Carderock
Division. Their financial and technical supports are greatly
appreciated.
NR 16
TC 0
Z9 0
U1 0
U2 5
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0263-8223
EI 1879-1085
J9 COMPOS STRUCT
JI Compos. Struct.
PD JAN
PY 2015
VL 119
BP 727
EP 737
DI 10.1016/j.compstruct.2014.09.052
PG 11
WC Materials Science, Composites
SC Materials Science
GA AW9AW
UT WOS:000346551100065
ER
PT J
AU Stemper, BD
Yoganandan, N
Baisden, JL
Umale, S
Shah, AS
Shender, BS
Paskoff, GR
AF Stemper, Brian D.
Yoganandan, Narayan
Baisden, Jamie L.
Umale, Sagar
Shah, Alok S.
Shender, Barry S.
Paskoff, Glenn R.
TI Rate-dependent fracture characteristics of lumbar vertebral bodies
SO JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
LA English
DT Article
DE Lumbar spine; Injury tolerance; Compression fracture; Sex differences;
Biomechanics; Gz
ID QUANTITATIVE COMPUTED-TOMOGRAPHY; BONE-MINERAL DENSITY; LOADING RATE;
COMPRESSIVE STRENGTH; CEMENT AUGMENTATION; DYNAMIC-RESPONSE; END-PLATE;
INJURIES; SPINE; VERTEBROPLASTY
AB Experimental testing incorporating lumbar columns and isolated components is essential to advance the understanding of injury tolerance and for the development of safety enhancements. This study incorporated a whole column axial acceleration model and an isolated vertebral body model to quantify compression rates during realistic loading and compressive tolerance of vertebrae. Eight lumbar columns and 53 vertebral bodies from 23 PMHS were used. Three-factor ANOVA was used to determine significant differences (p <0.05) in physiologic and failure biomechanics based on compression rate, spinal level, and gender. Results demonstrated a significant increase in ultimate force (i.e., fracture) from lower to higher compression rates. Ultimate stress also increased with compression rate. Displacement and strain to failure were consistent at both compression rates. Differences in ultimate mechanics between vertebral bodies obtained from males and females demonstrated non-significant trends, with female vertebral bodies having lower ultimate force that would be associated with decreased injury tolerance. This was likely a result of smaller vertebrae in that population. Combined with existing literature, results presented in this manuscript contribute to the understanding of lumbar spine tolerance during axial loading events that occur in both military and civilian environments with regard to effects of compression rate and gender. (C) 2014 Published by Elsevier Ltd.
C1 [Stemper, Brian D.; Yoganandan, Narayan; Baisden, Jamie L.; Umale, Sagar; Shah, Alok S.] Med Coll Wisconsin, Dept Surg, Milwaukee, WI 53226 USA.
[Stemper, Brian D.; Yoganandan, Narayan; Baisden, Jamie L.; Umale, Sagar; Shah, Alok S.] Vet Affairs Med Ctr, Milwaukee, WI 53226 USA.
[Shender, Barry S.; Paskoff, Glenn R.] Naval Air Warfare Ctr, Div Aircraft, Patuxent River, MD 20670 USA.
RP Stemper, BD (reprint author), Med Coll Wisconsin, Dept Surg, Milwaukee, WI 53226 USA.
EM bstemper@mcw.edu
FU Office of Naval Research through Naval Air Warfare Center Aircraft
Division [N00421-10-C-0049]; Department of Veterans Affairs Medical
Research
FX This research was supported in part by the Office of Naval Research
through Naval Air Warfare Center Aircraft Division Contract
N00421-10-C-0049, and the Department of Veterans Affairs Medical
Research.
NR 37
TC 2
Z9 2
U1 2
U2 15
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1751-6161
EI 1878-0180
J9 J MECH BEHAV BIOMED
JI J. Mech. Behav. Biomed. Mater.
PD JAN
PY 2015
VL 41
BP 271
EP 279
DI 10.1016/j.jmbbm.2014.07.035
PG 9
WC Engineering, Biomedical; Materials Science, Biomaterials
SC Engineering; Materials Science
GA AW3XW
UT WOS:000346217400026
PM 25154535
ER
PT J
AU Ewing, KJ
Gibson, D
Sanghera, J
Miklos, F
AF Ewing, K. J.
Gibson, D.
Sanghera, J.
Miklos, F.
TI Desorption electrospray ionization-mass spectrometric analysis of low
vapor pressure chemical particulates collected from a surface
SO ANALYTICA CHIMICA ACTA
LA English
DT Article
DE Desorption electrospray ionization; Mass spectrometry; Low vapor
pressure chemical; Collection; Surface; Sticky screens
ID WARFARE AGENTS; CHROMATOGRAPHY; EXTRACTION
AB The collection of a low vapor pressure chemical simulant triethyl phosphate sorbed onto silica gel (TEP/SG) from a surface with subsequent analysis of the TEP/SG particulates using desorption electrospray ionization-mass spectrometry (DESI-MS) is described. Collection of TEP/SG particulates on a surface was accomplished using a sticky screen sampler composed of a stainless steel screen coated with partially polymerized polydimethylsiloxane (PDMS). DESI-MS analysis of TEP/SG particulates containing different percentages of TEP sorbed onto silica gel enabled the generation of response curves for the TEP ions m/z 155 and m/z 127. Using the response curves the calculation of the mass of TEP in a 25 wt% sample of TEP/SG was calculated, results show that the calculated mass of TEP was 14% different from the actual mass of TEP in the sample using the m/z 127 TEP ion response curve. Detection limits for the TEP vapor and TEP/SG particulates were calculated to be 4 mg and 6 particles, respectively. Published by Elsevier B.V.
C1 [Ewing, K. J.; Gibson, D.; Sanghera, J.] Naval Res Lab, Washington, DC 20375 USA.
[Miklos, F.] Sotera Def Solut, Herndon, VA USA.
RP Ewing, KJ (reprint author), Naval Res Lab, Code 5620,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM ken.ewing@nrl.navy.mile
FU Joint Program Executive Office; Dr. Angela Ervin, DHS ST
[HSHQDC-11-X-00568]
FX The authors gratefully thank the Joint Program Executive Office for
Chemical and Biological Defense/Joint Project Manager for Nuclear,
Biological and Chemical Contamination Avoidance and Dr. Angela Ervin,
DHS S&T, contract #HSHQDC-11-X-00568 for supporting this work.
NR 25
TC 2
Z9 3
U1 1
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0003-2670
EI 1873-4324
J9 ANAL CHIM ACTA
JI Anal. Chim. Acta
PD JAN 1
PY 2015
VL 853
BP 368
EP 374
DI 10.1016/j.aca.2014.09.042
PG 7
WC Chemistry, Analytical
SC Chemistry
GA AU5MT
UT WOS:000345652000036
PM 25467481
ER
PT J
AU Martinage, R
AF Martinage, Robert
TI Under the Sea The Vulnerability of the Commons
SO FOREIGN AFFAIRS
LA English
DT Article
C1 [Martinage, Robert] US Navy, Washington, DC USA.
NR 0
TC 1
Z9 1
U1 3
U2 3
PU COUNCIL FOREIGN RELAT IONS INC
PI NEW YORK
PA HAROLD PRATT HOUSE, 58 E 68TH ST, NEW YORK, NY 10065 USA
SN 0015-7120
J9 FOREIGN AFF
JI Foreign Aff.
PD JAN-FEB
PY 2015
VL 94
IS 1
BP 117
EP +
PG 10
WC International Relations
SC International Relations
GA AW4DN
UT WOS:000346231600017
ER
PT J
AU Schwartz, IB
Lindley, B
Shaw, LB
AF Schwartz, Ira B.
Lindley, Brandon
Shaw, Leah B.
GP IEEE
TI Adaptive Dynamics, Control, and Extinction in Networked Populations
SO 2015 18TH INTERNATIONAL CONFERENCE ON INFORMATION FUSION (FUSION)
LA English
DT Proceedings Paper
CT 18th International Conference on Information Fusion (Fusion)
CY JUL 06-09, 2015
CL Washington, DC
ID RECURRENT EPIDEMICS; SYSTEMS
AB Real networks consisting of social contacts do not possess static connections. That is, social connections may be time dependent due to a variety of individual behavioral decisions based on current network links between people. Examples of adaptive networks occur in epidemics, where information about infectious individuals may change the rewiring of healthy people, or in the recruitment of individuals to a cause or fad, where rewiring may optimize recruitment of susceptible individuals. In this talk, we will review some of the dynamical properties of adaptive and random networks, such as bifurcation structure and the size of fluctuations. We will also show how adaptive networks predict novel phenomena as well as yield insight into new controls.
Applying a new transition rate approximation that incorporates link dynamics, we extend the theory of large deviations to stochastic network extinction to predict extinction times. In particular, we use the theory to find the most probable paths leading to extinction. We then apply the methodology to network models and discover how mean extinction times scale with network parameters in Erdos-Renyi networks. The results are shown to compare quite well with Monte Carlo simulations of the network in predicting both the most optimal paths to extinction and mean extinction times.
C1 [Schwartz, Ira B.] US Navy, Res Lab, Div Plasma Phys, Nonlinear Syst Dynam Sect, Code 6792, Washington, DC 20375 USA.
[Lindley, Brandon] Daniel H Wagner Assoc Inc, 2 Eaton St,Suite 500, Hampton, VA 23669 USA.
[Shaw, Leah B.] Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23817 USA.
RP Schwartz, IB (reprint author), US Navy, Res Lab, Div Plasma Phys, Nonlinear Syst Dynam Sect, Code 6792, Washington, DC 20375 USA.
EM Ira.Schwartz@nrl.navy.mil; brandon.lindley@va.wagner.com; lbshaw@wm.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
BN 978-0-9824-4386-6
PY 2015
BP 194
EP 199
PG 6
WC Computer Science, Artificial Intelligence; Computer Science,
Interdisciplinary Applications; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BG5KW
UT WOS:000389523300027
ER
PT J
AU Mishra, M
Sidoti, D
Fernando, D
Ayala, M
Han, X
Avvari, GV
Zhang, LY
Pattipati, KR
An, W
Hansen, JA
Kleinman, DL
AF Mishra, Manisha
Sidoti, David
Fernando, Diego
Ayala, Martinez
Han, Xu
Avvari, Gopi Vinod
Zhang, Lingyi
Pattipati, Krishna R.
An, Woosun
Hansen, James A.
Kleinman, David L.
GP IEEE
TI Dynamic Resource Management and Information Integration for Proactive
Decision Support and Planning
SO 2015 18TH INTERNATIONAL CONFERENCE ON INFORMATION FUSION (FUSION)
LA English
DT Proceedings Paper
CT 18th International Conference on Information Fusion (Fusion)
CY JUL 06-09, 2015
CL Washington, DC
DE Resource management; surveillance; interdiction; value of information;
multi-level resource allocation
AB Major challenges anticipated by future mission planners comprise automated processing, interpretation, and development of intelligent decisions using large volumes of dynamically evolving structured and unstructured data, while simultaneously decreasing the time necessary to plan and replan. Motivated by the need to seamlessly integrate automated information processing and resource management for proactive decision-making and execution in a highly adaptive network-centric environment, we propose a) surveillance and interdiction algorithms for dynamic resource management; b) distributed and collaborative mixed-initiative multi-level resource allocation algorithms to allocate hierarchically-organized assets to process inter-dependent tasks and goals; and c) quantifying the value of information in order to accomplish mission objectives. The decision support concepts and algorithms discussed in this paper seek to maximize the efficiency of information transactions in mission planning/re-planning processes by achieving shared situational awareness and increased mission effectiveness. We specifically focus on the dynamic decision making processes associated with planning in a broad range of maritime operations.
C1 [Mishra, Manisha; Sidoti, David; Fernando, Diego; Ayala, Martinez; Han, Xu; Avvari, Gopi Vinod; Zhang, Lingyi; Pattipati, Krishna R.] Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA.
[An, Woosun] SIMNET Co Ltd, Seoul, South Korea.
[Hansen, James A.] US Navy, Res Lab, Monterey, CA 93943 USA.
[Kleinman, David L.] US Navy, Postgrad Sch, Monterey, CA 93943 USA.
RP Mishra, M (reprint author), Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA.
EM krishna@engr.uconn.edu; dlkleinm@nps.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 978-0-9824-4386-6
PY 2015
BP 295
EP 302
PG 8
WC Computer Science, Artificial Intelligence; Computer Science,
Interdisciplinary Applications; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BG5KW
UT WOS:000389523300040
ER
PT J
AU Crouse, DF
AF Crouse, David Frederic
GP IEEE
TI Cubature/Unscented/Sigma Point Kalman Filtering with Angular Measurement
Models
SO 2015 18TH INTERNATIONAL CONFERENCE ON INFORMATION FUSION (FUSION)
LA English
DT Proceedings Paper
CT 18th International Conference on Information Fusion (Fusion)
CY JUL 06-09, 2015
CL Washington, DC
ID SYSTEMS; TRACKING
AB Filtering algorithms that use different forms of numerical integration to handle measurement and process non-linearities, such as the cubature Kalman filter, can perform extremely poorly in many applications involving angular measurements. We demonstrate how such filters can be modified to take into account the circular nature of the angular measurements, dramatically improving performance. Unlike common alternate techniques, the cubature methods can be easily used with angular measurements arising from ray-traceable propagation models.
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 38
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-0-9824-4386-6
PY 2015
BP 1550
EP 1557
PG 8
WC Computer Science, Artificial Intelligence; Computer Science,
Interdisciplinary Applications; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BG5KW
UT WOS:000389523300204
ER
PT S
AU Day, MA
Clement, MR
Russo, JD
Davis, D
Chung, TH
AF Day, Michael A.
Clement, Michael R.
Russo, John D.
Davis, Duane
Chung, Timothy H.
GP IEEE
TI Multi-UAV Software Systems and Simulation Architecture
SO 2015 INTERNATIONAL CONFERENCE ON UNMANNED AIRCRAFT SYSTEMS (ICUAS'15)
SE International Conference on Unmanned Aircraft Systems
LA English
DT Proceedings Paper
CT International Conference on Unmanned Aircraft Systems (ICUAS)
CY JUN 09-12, 2015
CL Denver, CO
SP IEEE, CSS, IEEE Robot & Automat Soc, MCA
AB As unmanned aerial systems (UAS) continue to increasingly require greater integration of sophisticated software systems, developing and utilizing best practices and principles of formal software systems engineering can enhance and ensure the safety, reliability, and performance of these systems. This paper highlights the detailed implementation of a number of such tools, including agile software development methods such as automated software testing, and enhanced simulation-in- the-loop testing for multi-UAS virtual and live-fly capabilities. Significant and tangible benefit to active field experimentation is demonstrated through description of these integrated approaches, impacting ongoing efforts in multi-UAS research, testing, and assessment practices.
C1 [Day, Michael A.; Russo, John D.; Chung, Timothy H.] Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA.
[Clement, Michael R.] Naval Postgrad Sch, Dept Informat Sci, Monterey, CA USA.
[Davis, Duane] Naval Postgrad Sch, Cyber Acad Grp, Monterey, CA USA.
RP Day, MA (reprint author), Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA.
EM maday@nps.edu; mrclemen@nps.edu; jdrusso1@nps.edu; dtdavi1@ps.edu;
thchung@nps.edu
NR 24
TC 2
Z9 2
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2373-6720
BN 978-1-4799-6010-1
J9 INT CONF UNMAN AIRCR
PY 2015
BP 426
EP 435
PG 10
WC Engineering, Aerospace; Engineering, Electrical & Electronic; Remote
Sensing
SC Engineering; Remote Sensing
GA BG3ZW
UT WOS:000388438500052
ER
PT S
AU Hernandez, AS
AF Hernandez, Alejandro S.
BE Tolk, A
Jafer, S
Padilla, JJ
TI INTEGRATING SIMULATION-DRIVEN DECISIONS AND BUSINESS WARGAMES TO SHAPE
FISCAL POLICIES
SO 48TH ANNUAL SIMULATION SYMPOSIUM (ANSS 2015)
SE PROCEEDINGS OF THE ANNUAL SIMULATION SYMPOSIA
LA English
DT Proceedings Paper
CT 48th Annual Simulation Symposium (ANSS) / Spring Simulation
Multi-Conference (SpringSim)
CY APR 12-15, 2015
CL Alexandria, VA
SP Soc Modeling & Simulat Int
DE Computer Experimentation; Joint Theater Level Simulation; Gaming;
Decision Analysis
AB In 2013 sequestration resulted in defense budgets absorbing the greatest proportion of cutbacks. Leaders are on notice that future debates must be built on more solid cost positions related to operational success. In this paper we use a systems engineering approach to develop a decision support system that integrates operational planning, gaming, computer simulation, and experimentation. The resulting methodology translates strategic budget decisions into terms of military effectiveness. Central to this effort is implementation of a campaign level simulation to adjudicate the success of U.S. forces in a given mission set. Equally important is the transformation of a computer-assisted wargame into a closed-loop simulation experiment to examine the trade space of the problem. To meet the challenges of austere economic environments we offer policy makers a fiscally-bounded, simulation-based gaming process to provide credible options that are quantifiable, repeatable, and analytically defendable.
C1 [Hernandez, Alejandro S.] US Navy, Postgrad Sch, Dept Syst Engn, 777 Dyer Rd, Monterey, CA 94394 USA.
RP Hernandez, AS (reprint author), US Navy, Postgrad Sch, Dept Syst Engn, 777 Dyer Rd, Monterey, CA 94394 USA.
EM ahernand@nps.edu
NR 33
TC 0
Z9 0
U1 0
U2 0
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA
SN 1080-241X
BN 978-1-5108-0099-1
J9 PROC ANNU SIMUL SYMP
PY 2015
BP 111
EP 118
PG 8
WC Computer Science, Interdisciplinary Applications
SC Computer Science
GA BG9JR
UT WOS:000393330600015
ER
PT B
AU Ford, DN
Damnjanovic, I
Johnson, ST
AF Ford, David N.
Damnjanovic, Ivan
Johnson, Scott T.
BE Johnston, EW
TI PUBLIC-PRIVATE PARTNERSHIPS A Study of Risk Allocation Design Envelopes
SO GOVERNANCE IN THE INFORMATION ERA: THEORY AND PRACTICE OF POLICY
INFORMATICS
LA English
DT Article; Book Chapter
ID COLLECTIVE BEHAVIOR; THRESHOLD MODELS; PROJECTS; DYNAMICS
C1 [Ford, David N.] Texas A&M Univ, Zachry Dept Civil Engn, Construct Engn & Management Program, College Stn, TX 77843 USA.
[Ford, David N.] US Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA USA.
[Ford, David N.] Univ Bergen, Dept Informat Sci Fac, N-5020 Bergen, Norway.
[Damnjanovic, Ivan] Texas A&M Univ, Zachry Dept Civil Engn, College Stn, TX 77843 USA.
[Johnson, Scott T.] SYSDYNX LLC, Stamford, CT USA.
[Johnson, Scott T.] Univ North Dakota, IES, Grand Forks, ND USA.
[Johnson, Scott T.] Univ North Dakota, Petr Engn, Grand Forks, ND USA.
RP Ford, DN (reprint author), Texas A&M Univ, Zachry Dept Civil Engn, Construct Engn & Management Program, College Stn, TX 77843 USA.
NR 37
TC 0
Z9 0
U1 0
U2 0
PU ROUTLEDGE
PI ABINGDON
PA 2 PARK SQ, MILTON PARK, ABINGDON OX14 4RN, OXFORD, ENGLAND
BN 978-1-138-83208-4; 978-1-315-73621-1; 978-1-138-83207-7
PY 2015
BP 119
EP 143
PG 25
WC Information Science & Library Science; Public Administration
SC Information Science & Library Science; Public Administration
GA BF6RU
UT WOS:000383655800008
ER
PT J
AU Chikhradze, NM
Marquis, FDS
Abashidze, GS
AF Chikhradze, Nikoloz M.
Marquis, Fernand D. S.
Abashidze, Guram S.
TI Hybrid fiber and nanopowder reinforced composites for wind turbine
blades
SO JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
LA English
DT Article
DE Epoxy; Hybrid fiber-reinforced composite; Coefficient of operating
condition
AB The results of an investigation into the production of wind turbine blades manufactured using polymer composites reinforced by hybrid (carbon, basalt, glass) fibers and strengthened by various nanopowders (oxides, carbides, borides) are presented. The hybrid fiber-reinforced composites (HFRC) were manufactured with prepreg technology by molding pre-saturated epoxy-strengthened matrix-reinforced fabric. Performance of the manufactured composites was estimated with values of the coefficient of operating condition (COC) at a moderate and elevated temperature. (C) 2015 Brazilian Metallurgical, Materials and Mining Association. Published by Elsevier Editora Ltda. All rights reserved.
C1 [Chikhradze, Nikoloz M.] Georgian Tech Univ, Tbilisi, Rep of Georgia.
[Chikhradze, Nikoloz M.; Abashidze, Guram S.] G Tsulukidze Min Inst Georgia, Tbilisi, Rep of Georgia.
[Marquis, Fernand D. S.] Wayne Mayer Inst Syst Engn, Naval Postgrad Sch, Dept Syst Engn, Monterey, CA USA.
RP Chikhradze, NM (reprint author), Georgian Tech Univ, Tbilisi, Rep of Georgia.
EM chikhradze@mining.org.ge
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 2238-7854
EI 2214-0697
J9 J MATER RES TECHNOL
JI J. Mater. Res. Technol-JMRT
PD JAN-MAR
PY 2015
VL 4
IS 1
BP 60
EP 67
DI 10.1016/j.jmrt.2015.01.002
PG 8
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA V46PS
UT WOS:000209896700009
ER
PT S
AU Huang, T
Pirlo, RK
Qin, W
Lin, YL
Wei, LN
Schmidt, L
Erdman, N
Xi, TF
DeSilva, MN
Gao, BZ
AF Huang, Ting
Pirlo, Russell K.
Qin, Wan
Lin, Yongliang
Wei, Lina
Schmidt, Lucas
Erdman, Nick
Xi, Tingfei
DeSilva, Mauris N.
Gao, Bruce Z.
BE Biffi, E
TI Development of a Compartmentalized Biochip for Axonal Isolation and
Neuronal-Circuit Formation at the Single-Cell Level
SO MICROFLUIDIC AND COMPARTMENTALIZED PLATFORMS FOR NEUROBIOLOGICAL
RESEARCH
SE Neuromethods
LA English
DT Article; Book Chapter
DE Microfabrication; Laser cell-micropatterning; Axon isolation; Single
cell-resolution circuits; Polarize
ID MICROELECTRODE ARRAYS; PLATFORM; NETWORKS; ARCHITECTURE; GUIDANCE;
DENSITY; CULTURE; GROWTH
AB In vitro neuronal networks in cell cultures have tremendous potential for the investigation of synapse formation, development, and function, especially with the development of microelectrode arrays. Most current techniques used to form a defined neuronal network are based on microcontact-printing, but the intercellular connections in the patterned low-density network are formed randomly, systematic study of a specific network is not possible. For such study, a practical tool for creating defined neuronal networks in which each intercellular connection can be formed according to a predetermined pattern is critical. In addition, because glia-particularly astrocytes-play an important role in neuronal network processing, a precise platform to study glia-neuron interaction at the single-cell level is necessary. In this chapter we describe a biochip-microfabrication technique and a unique laser cell-micropatterning system for creation of a compartmentalized, axon-isolating, polarized neuron-growth platform at the single-cell level.
C1 [Huang, Ting; Wei, Lina; Schmidt, Lucas; Erdman, Nick; Gao, Bruce Z.] Clemson Univ, Dept Bioengn, Clemson, SC USA.
[Huang, Ting; Wei, Lina; Xi, Tingfei] Peking Univ, Acad Adv Interdisciplinary Studies, Ctr Biomed Mat & Tissue Engn, Beijing 100871, Peoples R China.
[Pirlo, Russell K.] Naval Res Lab, Bioenergy & Biofabricat Sect, Washington, DC 20375 USA.
[Lin, Yongliang] Natl Engn Lab Regenerat Implantable Med Devices, Guangzhou, Guangdong, Peoples R China.
[DeSilva, Mauris N.] Naval Med Res Unit San Antonio, Ft Sam Houston, TX USA.
RP Huang, T (reprint author), Clemson Univ, Dept Bioengn, Clemson, SC USA.
NR 35
TC 0
Z9 0
U1 0
U2 0
PU HUMANA PRESS INC
PI TOTOWA
PA 999 RIVERVIEW DR, STE 208, TOTOWA, NJ 07512-1165 USA
SN 0893-2336
BN 978-1-4939-2510-0; 978-1-4939-2509-4
J9 NEUROMETHODS
JI Neuromethods
PY 2015
VL 103
BP 83
EP 104
DI 10.1007/978-1-4939-2510-0_5
D2 10.1007/978-1-4939-2510-0
PG 22
WC Neurosciences
SC Neurosciences & Neurology
GA BE5AF
UT WOS:000372458800007
ER
PT J
AU Robinson, ZR
Jernigan, GG
Currie, M
Hite, JK
Bussmann, KM
Nyakiti, LO
Garces, NY
Nath, A
Rao, MV
Wheeler, VD
Myers-Ward, RL
Wollmershauser, JA
Feigelson, BN
Eddy, CR
Gaskill, DK
AF Robinson, Zachary R.
Jernigan, Glenn G.
Currie, Marc
Hite, Jennifer K.
Bussmann, Konrad M.
Nyakiti, Luke O.
Garces, Nelson Y.
Nath, Anindya
Rao, Mulpuri V.
Wheeler, Virginia D.
Myers-Ward, Rachael L.
Wollmershauser, James A.
Feigelson, Boris N.
Eddy, Charles R.
Gaskill, D. Kurt
TI Challenges to graphene growth on SiC(000(1)over-bar): Substrate effects,
hydrogen etching and growth ambient
SO CARBON
LA English
DT Article
ID EPITAXIAL-GRAPHENE; SILICON-CARBIDE; SI-FACE; TRANSISTORS; VAPOR;
TRANSPARENT; SUBLIMATION
AB Controlling the uniformity and morphology of graphene grown on the C-face of SiC is more difficult than on the Si-face. To improve graphene grown on the C-face, a continuous growth process was developed in a conventional tube furnace that included in situ surface preparation by annealing in H-2 followed by an Ar-mediated growth, which was done at a variety of different temperatures and pressures. Optimized H-2 etch conditions for the C-face were developed to improve the starting substrate morphology and reduce the effect of substrate defects on growth. The resulting graphene film, however, had non-uniform thickness due to intrinsic bulk defects within the SiC substrate and an interfacial oxide. Differences between substrate properties, such as polytype, are shown to have a significant effect on growth, with a 4H substrate displaying faster in-plane graphene growth than a 6H substrate. A primarily 2-domain graphene film with significant rotational disorder was found regardless of the starting substrate and growth conditions. Ultra-high vacuum desorption of the interfacial oxide caused the graphene to reorder into a single preferred rotational orientation, suggesting trace oxygen impurities in the growth chamber can play an important role in graphene growth on the C-face of SiC. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Robinson, Zachary R.; Jernigan, Glenn G.; Currie, Marc; Hite, Jennifer K.; Bussmann, Konrad M.; Nyakiti, Luke O.; Garces, Nelson Y.; Wheeler, Virginia D.; Myers-Ward, Rachael L.; Wollmershauser, James A.; Feigelson, Boris N.; Eddy, Charles R.; Gaskill, D. Kurt] US Naval Res Lab, Washington, DC 20375 USA.
[Nyakiti, Luke O.] Texas A&M Univ, Dept Marine Engn Mat Sci & Engn, College Stn, TX 77843 USA.
[Garces, Nelson Y.] Sotera Def Solut, Crofton, MD 21114 USA.
[Nath, Anindya; Rao, Mulpuri V.] George Mason Univ, Fairfax, VA 22030 USA.
RP Robinson, ZR (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM Zachary.Robinson.ctr@nrl.navy.mil; Glenn.Jernigan@nrl.navy.mil
RI Hite, Jennifer/L-5637-2015
OI Hite, Jennifer/0000-0002-4090-0826
NR 39
TC 5
Z9 5
U1 6
U2 79
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0008-6223
EI 1873-3891
J9 CARBON
JI Carbon
PD JAN
PY 2015
VL 81
BP 73
EP 82
DI 10.1016/j.carbon.2014.09.025
PG 10
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA AU5ZX
UT WOS:000345682900008
ER
PT J
AU Rossi, JE
Cress, CD
Merrill, A
Soule, KJ
Cox, ND
Landi, BJ
AF Rossi, Jamie E.
Cress, Cory D.
Merrill, Andrew
Soule, Karen J.
Cox, Nathanael D.
Landi, Brian J.
TI Intrinsic diameter dependent degradation of single-wall carbon nanotubes
from ion irradiation
SO CARBON
LA English
DT Article
ID THIN-FILM TRANSISTORS; GATE DIELECTRICS; TRANSPARENT; NETWORKS; DYNAMICS
AB The structural response of single-wall carbon nanotube (SWCNT) thin-films to ion irradiation has been systematically studied with increasing fluence between 5 x 10(12) and 1 x 10(15) (150 keV(11)B(+))/cm(2) as a function of SWCNT diameter distribution. SEM analysis reveals that the SWCNT morphology remains intact after radiation exposure. The optical absorbance intensity decreases with increasing fluence, and near complete suppression is observed at approximately 2.5 x 10(14) (B-11(+))/cm(2), resulting in an equivalent reduction in signal intensity for resonant Raman spectroscopy. Changes observed in the optical response with increasing fluence demonstrate that defective SWCNTs behave similarly to other strongly doped or physically shortened SWCNTs. The Raman D/G' increases with fluence for all samples, yet the magnitude of increase is strongly dependent on the SWCNT diameter distribution. The diameter dependence stems from differences in the SWCNT mass per unit length, which is incorporated into an inter-vacancy length (L-v) model that describes the radiation-induced changes. Ultimately, all SWCNT data converge to show an equivalent change in D/G' at a corresponding L-v, even though the fluence required to achieve a particular L-v varies with SWCNT diameter. Thus, the radiation-induced changes in SWCNTs are intrinsically linked to their diameter, representing a fundamental property unique to this class of nanomaterials. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Rossi, Jamie E.; Merrill, Andrew; Soule, Karen J.; Cox, Nathanael D.; Landi, Brian J.] Rochester Inst Technol, NanoPower Res Lab, Rochester, NY 14623 USA.
[Cress, Cory D.] US Navy, Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
[Soule, Karen J.; Landi, Brian J.] Rochester Inst Technol, Dept Chem Engn, Rochester, NY 14623 USA.
[Cox, Nathanael D.] Rochester Inst Technol, Dept Microsyst Engn, Rochester, NY 14623 USA.
RP Landi, BJ (reprint author), Rochester Inst Technol, Dept Chem Engn, Rochester, NY 14623 USA.
EM brian.landi@rit.edu
RI Cox, Nathanael/A-2564-2017;
OI Cox, Nathanael/0000-0003-0843-9141; Cress, Cory/0000-0001-7563-6693
FU United States Government through the Defense Threat Reduction Agency
(DTRA) [HDTRA-1-10-1-0122]; U.S. Government
FX The authors gratefully acknowledge funding from the United States
Government through the Defense Threat Reduction Agency (DTRA) under
Grant HDTRA-1-10-1-0122. This material is based upon work funded in
whole or in party by the U.S. Government, and any opinions, findings,
conclusions, or recommendations expressed in this material are those of
the author(s) and do not necessarily reflect the views of the U.S.
Government. The authors also thank T. Mastrangelo for synthesis of the
laser SWCNT soots.
NR 33
TC 10
Z9 10
U1 1
U2 17
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0008-6223
EI 1873-3891
J9 CARBON
JI Carbon
PD JAN
PY 2015
VL 81
BP 488
EP 496
DI 10.1016/j.carbon.2014.09.081
PG 9
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA AU5ZX
UT WOS:000345682900053
ER
PT J
AU Rohlfs, C
Sullivan, R
McNab, R
AF Rohlfs, Chris
Sullivan, Ryan
McNab, Robert
TI CAN THE PRESIDENT REALLY AFFECT ECONOMIC GROWTH? PRESIDENTIAL EFFORT AND
THE POLITICAL BUSINESS CYCLE
SO ECONOMIC INQUIRY
LA English
DT Article
ID ELECTIONS
AB Presidential elections are often seen as referendums on the health of the economy; however, little evidence exists on the president's ability to influence gross domestic product (GDP). This study examines the effect of the incentive to be reelected and the resulting increase in presidential effort on GDP growth. Growth is found to rise in reelection years for first-term presidents after 1932 and to fall in election years before 1932, when reelection was uncommon, and for second-term presidents generally. This effect is largest for high-quality presidentswho probably have the highest return to effortand is spread across multiple sectors of the economy. (JEL D78, D72, E32, J24)
C1 [Sullivan, Ryan; McNab, Robert] US Naval Postgrad Sch, Monterey, CA 93943 USA.
EM carohlfs@gmail.com; rssulliv@nps.edu; rmmcnab@nps.edu
OI Rohlfs, Chris/0000-0001-7714-9231
NR 38
TC 0
Z9 0
U1 3
U2 7
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0095-2583
EI 1465-7295
J9 ECON INQ
JI Econ. Inq.
PD JAN
PY 2015
VL 53
IS 1
BP 240
EP 257
DI 10.1111/ecin.12111
PG 18
WC Economics
SC Business & Economics
GA AU0ZH
UT WOS:000345350200014
ER
PT J
AU Augenblick, N
Cunha, JM
AF Augenblick, Ned
Cunha, Jesse M.
TI COMPETITION AND COOPERATION IN A PUBLIC GOODS GAME: A FIELD EXPERIMENT
SO ECONOMIC INQUIRY
LA English
DT Article
ID INTERGROUP COMPETITION; SOCIAL PREFERENCES; SOLICITATION; PROVISION;
DONATIONS; IDENTITY; AUCTIONS; BEHAVIOR; IMPACT
AB We explore the effects of competitive and cooperative motivations on contributions in a field experiment. A total of 10,000 potential political donors received solicitations referencing past contribution behavior of members of the competing party (competition treatment), the same party (cooperative treatment), or no past contribution information (control). We first theoretically analyze the effect of these treatments on the contribution behavior of agents with different social preferences in a modified intergroup public good (IPG) game. Then, we report the empirical results: Contribution rates in the competitive, cooperative, and control treatments were 1.45%, 1.08%, and 0.78%, respectively. With the exception of one large contribution, the distribution of contributions in the competitive treatment first order stochastically dominates that of the cooperative treatment. Qualitatively, it appears that the cooperative treatment induced more contributions around the common monetary reference point, while the competitive treatment led to more contributions at twice this amount. These results suggest that eliciting competitive rather than cooperative motivations can lead to higher contributions in IPG settings. (JEL D72, H41, C93)
C1 [Augenblick, Ned] Univ Calif Berkeley, Haas Sch Business, Berkeley, CA 94720 USA.
[Cunha, Jesse M.] Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 95060 USA.
RP Augenblick, N (reprint author), Univ Calif Berkeley, Haas Sch Business, Berkeley, CA 94720 USA.
EM ned@haas.berkeley.edu; jcunha@nps.edu
NR 29
TC 2
Z9 2
U1 0
U2 8
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0095-2583
EI 1465-7295
J9 ECON INQ
JI Econ. Inq.
PD JAN
PY 2015
VL 53
IS 1
BP 574
EP 588
DI 10.1111/ecin.12105
PG 15
WC Economics
SC Business & Economics
GA AU0ZH
UT WOS:000345350200033
ER
PT J
AU Creasey, E
Rahman, AS
Smith, KA
AF Creasey, Ellyn
Rahman, Ahmed S.
Smith, Katherine A.
TI DOES NATION BUILDING SPUR ECONOMIC GROWTH?
SO ECONOMIC INQUIRY
LA English
DT Article
ID AID; EMPIRICS
AB Nation building, the allocation of economic aid conditional on military assistance in conflict and post-conflict environments, has cost the world trillions of dollars over the last half century. Yet few attempts have been made to quantify the potential economic growth effects for the recipient country from the provision of this aid. Using a 45-year panel dataset, we construct a measure of nation building using a three-way interaction term between military assistance, economic aid, and conflict regime. Considering that slow growing and problem-prone countries may be less likely to receive aid, we instrument for economic aid by estimating donor-to-donee aid flows in a first-stage procedure. Using this approach, we find that spending on nation building has positive growth effects during conflict periods, but that these effects disappear after conflict. (JEL F3, F4, O5)
C1 [Creasey, Ellyn] US Navy, US Naval Acad, Dept Econ, Annapolis, MD 21402 USA.
[Rahman, Ahmed S.; Smith, Katherine A.] US Naval Acad, Dept Econ, Annapolis, MD 21402 USA.
RP Creasey, E (reprint author), US Navy, US Naval Acad, Dept Econ, Annapolis, MD 21402 USA.
EM eacreasey@gmail.com; rahman@usna.edu; ksmith@usna.edu
NR 38
TC 1
Z9 1
U1 0
U2 3
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0095-2583
EI 1465-7295
J9 ECON INQ
JI Econ. Inq.
PD JAN
PY 2015
VL 53
IS 1
BP 660
EP 680
DI 10.1111/ecin.12148
PG 21
WC Economics
SC Business & Economics
GA AU0ZH
UT WOS:000345350200038
ER
PT J
AU Gordon, DF
Hafizi, B
Landsman, AS
AF Gordon, D. F.
Hafizi, B.
Landsman, A. S.
TI Amplitude flux, probability flux, and gauge invariance in the finite
volume scheme for the Schrodinger equation
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Schrodinger equation; Finite volume; Bohmian trajectories
ID TRAJECTORIES; TIME
AB The time-dependent Schrodinger equation can be put in a probability conserving, gauge invariant form, on arbitrary structured grids via finite volume discretization. The gauge terms in the discrete system cancel with a portion of the amplitude flux to produce abbreviated flux functions. The resulting time translation operator is strictly unitary, and is compatible with an efficient operator splitting scheme that allows for multi-dimensional simulation with complex grid geometries. Moreover, the abbreviated amplitude flux is necessary to the construction of a conservative probability current. This construction turns out to be important when computing Bohmian trajectories in multi-dimensions. Bohmian trajectories are useful in the interpretation of quantum mechanical phenomena such as tunneling ionization, and provide a bridge between quantum and classical regimes. Published by Elsevier Inc.
C1 [Gordon, D. F.; Hafizi, B.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Landsman, A. S.] Swiss Fed Inst Technol, Zurich, Switzerland.
RP Gordon, DF (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RI Landsman, Alexandra/I-6399-2013
OI Landsman, Alexandra/0000-0002-8194-8439
FU Naval Research Laboratory 6.1 Base Program [WU-4987]; U.S. Department of
Energy (DOE) [DE-AI02-93ER40797]
FX This work is supported by the Naval Research Laboratory 6.1 Base Program
(WU-4987), and the U.S. Department of Energy (DOE) under Grant
DE-AI02-93ER40797. We appreciate useful discussions with M.H. Helle, A.
Ting, J.R. Penano, A. Zigler, J. Palastro, T. Rensink, and T. Antonsen,
Jr. Resources of the National Energy Research Scientific Computing
Center (NERSC), and of the U.S. Department of Defense High Performance
Computing and Modernization Program (HPCMP), were used in this work.
NR 16
TC 2
Z9 2
U1 0
U2 8
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
EI 1090-2716
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD JAN 1
PY 2015
VL 280
BP 457
EP 464
DI 10.1016/j.jcp.2014.10.008
PG 8
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA AU3CK
UT WOS:000345490200024
ER
PT J
AU Storm, DF
McConkie, T
Katzer, DS
Downey, BP
Hardy, MT
Meyer, DJ
Smith, DJ
AF Storm, D. F.
McConkie, T.
Katzer, D. S.
Downey, B. P.
Hardy, M. T.
Meyer, D. J.
Smith, David J.
TI Effect of interfacial oxygen on the microstructure of MBE-grown
homoepitaxial N-polar GaN
SO JOURNAL OF CRYSTAL GROWTH
LA English
DT Article
DE Defects; Impurities; Molecular beam epitaxy; Nitrides; N-polar nitrides
ID MOLECULAR-BEAM EPITAXY; ALGAN/GAN HETEROSTRUCTURES; HEMTS
AB We have investigated the microstructure of homoepitaxial N-polar GaN layers grown by rf-plasma-assisted molecular beam epitaxy on freestanding GaN substrates. The structural quality of the epitaxial layers improves when the sheet density of oxygen present on the substrate surface diminishes. An initial sheet density of oxygen of similar to 0.5 monolayer (ML) results in a highly defective epitaxial layer, while an epitaxial layer with no visible threading dislocations was grown on a substrate with an initial oxygen sheet density of similar to 0.08 ML. The significant reduction in oxygen was achieved by using several cycles of Ga deposition and thermal desorption prior to the start of epitaxial growth combined with an initial ultrathin 15-angstrom AlN nucleation layer. These results indicate that reducing the density of oxygen on the surfaces of freestanding N-polar GaN substrates is vital for obtaining high quality homoepitaxial N-polar GaN layers. Published by Elsevier B.V.
C1 [Storm, D. F.; Katzer, D. S.; Downey, B. P.; Hardy, M. T.; Meyer, D. J.] US Navy, Res Lab, Elect Sci &Technol Div, Washington, DC 20375 USA.
[McConkie, T.; Smith, David J.] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
RP Storm, DF (reprint author), US Navy, Res Lab, Elect Sci &Technol Div, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM david.storm@nrl.navy.mil
OI Hardy, Matthew/0000-0002-8016-6347
FU Office of Naval Research; Air Force Research Laboratory Sensors
Directorate Technical Task 261 [HC1047-05-D-4005]
FX The authors wish to thank Dr. Glenn Jernigan for helpful discussions and
ME Neil Green for assistance with sample preparation. This work was
supported by the Office of Naval Research under funding from Dr. R Maki.
The electron microscopy studies at ASU were supported under contract to
Wyle Laboratories as part of Reliability Information Analysis Center
(RIAC) Contract HC1047-05-D-4005 under the Air Force Research Laboratory
Sensors Directorate Technical Task 261 (monitor: Chris Bozada), The
authors (TM and DJS) acknowledge the use of the facilities in the John
M. Cowley Center for High Resolution Electron Microscopy.
NR 14
TC 3
Z9 3
U1 9
U2 37
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-0248
EI 1873-5002
J9 J CRYST GROWTH
JI J. Cryst. Growth
PD JAN 1
PY 2015
VL 409
BP 14
EP 17
DI 10.1016/j.jcrysgro.2014.09.042
PG 4
WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied
SC Crystallography; Materials Science; Physics
GA AT4YO
UT WOS:000344949500003
ER
PT J
AU Banks, W
Finch, C
Luca, F
Pomerance, C
Stanica, P
AF Banks, William
Finch, Carrie
Luca, Florian
Pomerance, Carl
Stanica, Pantelimon
TI SIERPINSKI AND CARMICHAEL NUMBERS
SO TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY
LA English
DT Article
ID GREATEST PRIME FACTOR; ARITHMETIC PROGRESSIONS; FORM; INTEGERS;
INTERVAL; DIVISOR; TOTIENT
AB We establish several related results on Carmichael, Sierpinski and Riesel numbers. First, we prove that almost all odd natural numbers k have the property that 2(n)k + 1 is not a Carmichael number for any n is an element of N; this implies the existence of a set K of positive lower density such that for any k is an element of K the number 2(n)k + 1 is neither prime nor Carmichael for every n is an element of N. Next, using a recent result of Matomaki and Wright, we show that there are >= x(1/5) Carmichael numbers up to x that are also Sierpinski and Riesel. Finally, we show that if 2(n)k + 1 is Lehmer, then n <= 150 omega(k)(2) log k, where omega(k) is the number of distinct primes dividing k.
C1 [Banks, William] Univ Missouri, Dept Math, Columbia, MO 65211 USA.
[Finch, Carrie] Washington & Lee Univ, Dept Math, Lexington, VA 24450 USA.
[Luca, Florian] Univ Witwatersrand, Sch Math, ZA-2050 Johannesburg, South Africa.
[Luca, Florian] UNAM Juriquilla, Math Inst, Santiago De Queretaro 76230, Queretaro De Ar, Mexico.
[Pomerance, Carl] Dartmouth Coll, Dept Math, Hanover, NH 03755 USA.
[Stanica, Pantelimon] Naval Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
RP Banks, W (reprint author), Univ Missouri, Dept Math, Columbia, MO 65211 USA.
EM bbanks@math.missouri.edu; finchc@wlu.edu; fluca@matmor.unam.mx;
carl.pomerance@dartmouth.edu; pstanica@nps.edu
FU Marcos Moshinsky fellowship; NSF [DMS-1001180]; [PAPIIT 104512]
FX The authors thank the referee for a careful reading of the manuscript
and for useful suggestions, and Jan-Hendrik Evertse for helpful advice
and for providing some references. They also thank Pedro Berrizbeitia
for an enlightening conversation. The third-named author was supported
in part by Project PAPIIT 104512 and a Marcos Moshinsky fellowship. The
fourth-named author would like to acknowledge support from NSF grant
DMS-1001180. The fifth-named author acknowledges sabbatical support from
the Naval Postgraduate School.
NR 29
TC 1
Z9 1
U1 1
U2 3
PU AMER MATHEMATICAL SOC
PI PROVIDENCE
PA 201 CHARLES ST, PROVIDENCE, RI 02940-2213 USA
SN 0002-9947
EI 1088-6850
J9 T AM MATH SOC
JI Trans. Am. Math. Soc.
PD JAN
PY 2015
VL 367
IS 1
BP 355
EP 376
AR PII S0002-9947(2014)06083-2
PG 22
WC Mathematics
SC Mathematics
GA AT3HM
UT WOS:000344826400014
ER
PT J
AU Margulies, S
Onn, S
Pasechnik, DV
AF Margulies, S.
Onn, S.
Pasechnik, D. V.
TI On the complexity of Hilbert refutations for partition
SO JOURNAL OF SYMBOLIC COMPUTATION
LA English
DT Article
DE Hilbert's Nullstellensatz; Linear algebra; Partition
ID LOWER BOUNDS; POLYNOMIAL CALCULUS; PROOFS; NULLSTELLENSATZ
AB Given a set of integers W, the PARTITION problem determines whether W can be divided into two disjoint subsets with equal sums. We model the PARTITION problem as a system of polynomial equations, and then investigate the complexity of a Hilbert's Nullstellensatz refutation, or certificate, that a given set of integers is not partitionable. We provide an explicit construction of a minimum-degree certificate, and then demonstrate that the PARTITION problem is equivalent to the determinant of a carefully constructed matrix called the partition matrix. In particular, we show that the determinant of the partition matrix is a polynomial that factors into an iteration over all possible partitions of W. Published by Elsevier Ltd.
C1 [Margulies, S.] US Naval Acad, Dept Math, Annapolis, MD 21402 USA.
[Onn, S.] Technion Israel Inst Technol, Haifa, Israel.
[Pasechnik, D. V.] Nanyang Technol Univ, Sch Phys & Math Sci, Singapore 639798, Singapore.
RP Margulies, S (reprint author), US Naval Acad, Dept Math, Annapolis, MD 21402 USA.
EM margulie@usna.edu; onn@ie.technion.ac.il; dima@ntu.edu.sg
OI Pasechnik, Dmitrii/0000-0002-7557-6886
FU NSF [DSS-0729251, NSF-CSSI-0926618, DSS-0240058]; Rice University VIGRE
program; Defense Advanced Research Projects Agency [N66001-10-1-4040];
Israel Science Foundation
FX The authors would like to acknowledge the support of NSF DSS-0729251,
NSF-CSSI-0926618, DSS-0240058, the Rice University VIGRE program, and
the Defense Advanced Research Projects Agency under Award No.
N66001-10-1-4040. Additionally, research on this projected was supported
in part by a grant from the Israel Science Foundation.
NR 19
TC 1
Z9 1
U1 2
U2 8
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0747-7171
J9 J SYMB COMPUT
JI J. Symb. Comput.
PD JAN-FEB
PY 2015
VL 66
BP 70
EP 83
DI 10.1016/j.jsc.2013.06.005
PG 14
WC Computer Science, Theory & Methods; Mathematics, Applied
SC Computer Science; Mathematics
GA AR1VX
UT WOS:000343373800005
ER
PT J
AU Bruski, P
Erwin, SC
Herfort, J
Tahraoui, A
Ramsteiner, M
AF Bruski, Pawel
Erwin, Steven C.
Herfort, Jens
Tahraoui, Abbes
Ramsteiner, Manfred
TI Probing the electronic band structure of ferromagnets with spin
injection and extraction
SO PHYSICAL REVIEW B
LA English
DT Article
ID GAAS(001); TRANSPORT
AB We study spin injection and spin extraction signals in lateral spin-valve structures consisting of ferromagnetic Co2FeSi contacts on n-type GaAs transport channels. The dependence of the spin-valve signals on the bias current is found to strongly depend on the degree of ordering in the Co2FeSi lattice. For the fully ordered L2(1) phase, the signal is equal for injection and extraction and independent of the bias current. In contrast, a strong dependence of the relative signal strengths (spin injection versus extraction) on the bias current is observed for the partially disordered B2 phase. We explain the strongly different behavior by the crucial influence of the respective electronic band structure on the spin generation processes.
C1 [Bruski, Pawel; Herfort, Jens; Tahraoui, Abbes; Ramsteiner, Manfred] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany.
[Erwin, Steven C.] Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
RP Bruski, P (reprint author), Paul Drude Inst Festkorperelekt, Hausvogteipl 5-7, D-10117 Berlin, Germany.
EM ramsteiner@pdi-berlin.de
FU U.S. Office of Naval Research Laboratory's Basic Research Program
FX We acknowledge the expert technical support by Walid Anders, Angela
Riedel, and Gerd Paris, as well as the critical reading of the
manuscript by Oliver Brandt and Holger Grahn. This work was supported in
part by the U.S. Office of Naval Research Laboratory's Basic Research
Program.
NR 23
TC 1
Z9 1
U1 1
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD DEC 31
PY 2014
VL 90
IS 24
AR 245150
DI 10.1103/PhysRevB.90.245150
PG 5
WC Physics, Condensed Matter
SC Physics
GA CB8OZ
UT WOS:000349891600003
ER
PT J
AU Radin, JM
Hawksworth, AW
Kammerer, PE
Balansay, M
Raman, R
Lindsay, SP
Brice, GT
AF Radin, Jennifer M.
Hawksworth, Anthony W.
Kammerer, Peter E.
Balansay, Melinda
Raman, Rema
Lindsay, Suzanne P.
Brice, Gary T.
TI Epidemiology of Pathogen-Specific Respiratory Infections among Three US
Populations
SO PLOS ONE
LA English
DT Article
ID INFLUENZA-LIKE ILLNESSES; VIRAL-INFECTIONS; CLINICAL SIGNS; PCR;
SURVEILLANCE; CHILDREN; VIRUSES; COINFECTIONS; PNEUMONIA; COMMUNITY
AB Background: Diagnostic tests for respiratory infections can be costly and time-consuming. Improved characterization of specific respiratory pathogens by identifying frequent signs, symptoms and demographic characteristics, along with improving our understanding of coinfection rates and seasonality, may improve treatment and prevention measures.
Methods: Febrile respiratory illness (FRI) and severe acute respiratory infection (SARI) surveillance was conducted from October 2011 through March 2013 among three US populations: civilians near the US-Mexico border, Department of Defense (DoD) beneficiaries, and military recruits. Clinical and demographic questionnaire data and respiratory swabs were collected from participants, tested by PCR for nine different respiratory pathogens and summarized. Age stratified characteristics of civilians positive for influenza and recruits positive for rhinovirus were compared to other and no/unknown pathogen. Seasonality and coinfection rates were also described.
Results: A total of 1444 patients met the FRI or SARI case definition and were enrolled in this study. Influenza signs and symptoms varied across age groups of civilians. Recruits with rhinovirus had higher percentages of pneumonia, cough, shortness of breath, congestion, cough, less fever and longer time to seeking care and were more likely to be male compared to those in the no/unknown pathogen group. Coinfections were found in 6% of all FRI/SARI cases tested and were most frequently seen among children and with rhinovirus infections. Clear seasonal trends were identified for influenza, rhinovirus, and respiratory syncytial virus.
Conclusions: The age-stratified clinical characteristics associated with influenza suggest that age-specific case definitions may improve influenza surveillance and identification. Improving identification of rhinoviruses, the most frequent respiratory infection among recruits, may be useful for separating out contagious individuals, especially when larger outbreaks occur. Overall, describing the epidemiology of pathogen specific respiratory diseases can help improve clinical diagnoses, establish baselines of infection, identify outbreaks, and help prioritize the development of new vaccines and treatments.
C1 [Radin, Jennifer M.; Hawksworth, Anthony W.; Kammerer, Peter E.; Balansay, Melinda; Brice, Gary T.] Naval Hlth Res Ctr San Diego, Operat Infect Dis Dept, San Diego, CA 92106 USA.
[Radin, Jennifer M.] Univ Calif San Diego, San Diego State Univ, Joint Doctoral Program Publ Hlth Epidemiol, San Diego, CA 92103 USA.
[Raman, Rema] Univ Calif San Diego, Dept Family & Prevent Med, La Jolla, CA 92093 USA.
[Lindsay, Suzanne P.] San Diego State Univ, Grad Sch Publ Hlth, San Diego, CA 92182 USA.
RP Radin, JM (reprint author), Naval Hlth Res Ctr San Diego, Operat Infect Dis Dept, San Diego, CA 92106 USA.
EM jennifer.radin@med.navy.mil
FU Department of Defense Global Emerging Infections Surveillance and
Response System [60805]
FX This work was supported by the Department of Defense Global Emerging
Infections Surveillance and Response System under Work Unit No. 60805.
The funders had no role in study design, data collection and analysis,
decision to publish, or preparation of the manuscript.
NR 34
TC 5
Z9 5
U1 2
U2 6
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD DEC 30
PY 2014
VL 9
IS 12
AR e114871
DI 10.1371/journal.pone.0114871
PG 16
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AX6YH
UT WOS:000347063500009
PM 25549089
ER
PT J
AU Trammell, SA
Zabetakis, D
Moore, M
Verbarg, J
Stenger, DA
AF Trammell, Scott A.
Zabetakis, Dan
Moore, Martin
Verbarg, Jasenka
Stenger, David A.
TI Square Wave Voltammetry of TNT at Gold Electrodes Modified with
Self-Assembled Monolayers Containing Aromatic Structures
SO PLOS ONE
LA English
DT Article
ID BRIDGES; EXPLOSIVES; 2,4,6-TRINITROTOLUENE; REDUCTION; MOLECULES
AB Square wave voltammetry for the reduction of 2,4,6-trinitrotoluene (TNT) was measured in 100 mM potassium phosphate buffer (pH 8) at gold electrodes modified with self-assembled monolayers (SAMs) containing either an alkane thiol or aromatic ring thiol structures. At 15 Hz, the electrochemical sensitivity (mu A/ppm) was similar for all SAMs tested. However, at 60 Hz, the SAMs containing aromatic structures had a greater sensitivity than the alkane thiol SAM. In fact, the alkane thiol SAM had a decrease in sensitivity at the higher frequency. When comparing the electrochemical response between simulations and experimental data, a general trend was observed in which most of the SAMs had similar heterogeneous rate constants within experimental error for the reduction of TNT. This most likely describes a rate limiting step for the reduction of TNT. However, in the case of the alkane SAM at higher frequency, the decrease in sensitivity suggests that the rate limiting step in this case may be electron tunneling through the SAM. Our results show that SAMs containing aromatic rings increased the sensitivity for the reduction of TNT when higher frequencies were employed and at the same time suppressed the electrochemical reduction of dissolved oxygen.
C1 [Trammell, Scott A.; Zabetakis, Dan; Moore, Martin; Verbarg, Jasenka; Stenger, David A.] Ctr Bio Mol Sci & Engn, Naval Res Lab, Washington, DC 20375 USA.
RP Zabetakis, D (reprint author), Ctr Bio Mol Sci & Engn, Naval Res Lab, Washington, DC 20375 USA.
EM daniel.zabetakis@nrl.navy.mil
FU Office of Naval Research
FX This work was funded by the Office of Naval Research. The funders had no
role in study design, data collection and analysis, decision to publish,
or preparation of the manuscript.
NR 31
TC 1
Z9 1
U1 1
U2 8
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD DEC 30
PY 2014
VL 9
IS 12
AR e115966
DI 10.1371/journal.pone.0115966
PG 12
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AX6YH
UT WOS:000347063500044
PM 25549081
ER
PT J
AU Zhou, CL
Cui, BY
Vurgaftman, I
Canedy, CL
Kim, CS
Kim, M
Bewley, WW
Merritt, CD
Abell, J
Meyer, JR
Grayson, M
AF Zhou, Chuanle
Cui, Boya
Vurgaftman, I.
Canedy, C. L.
Kim, C. S.
Kim, M.
Bewley, W. W.
Merritt, C. D.
Abell, J.
Meyer, J. R.
Grayson, M.
TI Thermal conductivity tensors of the cladding and active layers of
interband cascade lasers
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID 3-OMEGA METHOD; FILMS
AB The cross-plane and in-plane thermal conductivities of the W-active stages and InAs/AlSb superlattice optical cladding layer of an interband cascade laser (ICL) were characterized for temperatures ranging from 15 K to 324 K. The in-plane thermal conductivity of the active layer is somewhat larger than the cross-plane value at temperatures above about 30 K, while the thermal conductivity tensor becomes nearly isotropic at the lowest temperatures studied. These results will improve ICL performance simulations and guide the optimization of thermal management. (C) 2014 AIP Publishing LLC.
C1 [Zhou, Chuanle; Cui, Boya; Grayson, M.] Northwestern Univ, Evanston, IL 60208 USA.
[Vurgaftman, I.; Canedy, C. L.; Kim, C. S.; Bewley, W. W.; Merritt, C. D.; Abell, J.; Meyer, J. R.] Naval Res Lab, Washington, DC 20375 USA.
[Kim, M.] Sotera Def Solut Inc, Crofton, MD 21114 USA.
RP Grayson, M (reprint author), Northwestern Univ, Evanston, IL 60208 USA.
EM m-grayson@northwestern.edu
RI Grayson, Matthew/B-7159-2009
FU AFOSR Grant [FA-9550-09-1-0237, FA-9550-12-1-0169]; Initiative for
Sustainability and Energy at Northwestern (ISEN); NSF MRSEC Grant
[DMR-1121262]; ONR
FX The work at Northwestern was supported by AFOSR Grant Nos.
FA-9550-09-1-0237 and FA-9550-12-1-0169, the Initiative for
Sustainability and Energy at Northwestern (ISEN), and NSF MRSEC Grant
No. DMR-1121262. Work at NRL was supported by ONR.
NR 12
TC 1
Z9 1
U1 4
U2 10
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 DEC 29
PY 2014
VL 105
IS 26
AR 261905
DI 10.1063/1.4905279
PG 3
WC Physics, Applied
SC Physics
GA AX8PO
UT WOS:000347171300017
ER
PT J
AU Hargrave, B
Strange, R
Navare, S
Stratton, M
Burcus, N
Murray, L
Lundberg, C
Bulysheva, A
Li, FY
Heller, R
AF Hargrave, Barbara
Strange, Robert, Jr.
Navare, Sagar
Stratton, Michael
Burcus, Nina
Murray, Len
Lundberg, Cathryn
Bulysheva, Anna
Li, Fanying
Heller, Richard
TI Gene Electro Transfer of Plasmid Encoding Vascular Endothelial Growth
Factor for Enhanced Expression and Perfusion in the Ischemic Swine Heart
SO PLOS ONE
LA English
DT Article
ID LEFT-VENTRICULAR VOLUMES; MYOCARDIAL-INFARCTION; EJECTION FRACTION;
ELECTROPORATION; ECHOCARDIOGRAPHY; DELIVERY; THERAPY; DNA
AB Myocardial ischemia can damage heart muscle and reduce the heart's pumping efficiency. This study used an ischemic swine heart model to investigate the potential for gene electro transfer of a plasmid encoding vascular endothelial growth factor for improving perfusion and, thus, for reducing cardiomyopathy following acute coronary syndrome. Plasmid expression was significantly greater in gene electro transfer treated tissue compared to injection of plasmid encoding vascular endothelial growth factor alone. Higher gene expression was also seen in ischemic versus non-ischemic groups with parameters 20 Volts (p<0.03), 40 Volts (p<0.05), and 90 Volts (p<0.05), but not with 60 Volts (p<0.09) while maintaining a pulse width of 20 milliseconds. The group with gene electro transfer of plasmid encoding vascular endothelial growth factor had increased perfusion in the area at risk compared to control groups. Troponin and creatine kinase increased across all groups, suggesting equivalent ischemia in all groups prior to treatment. Echocardiography was used to assess ejection fraction, cardiac output, stroke volume, left ventricular end diastolic volume, and left ventricular end systolic volume. No statistically significant differences in these parameters were detected during a 2-week time period. However, directional trends of these variables were interesting and offer valuable information about the feasibility of gene electro transfer of vascular endothelial growth factor in the ischemic heart. The results demonstrate that gene electro transfer can be applied safely and can increase perfusion in an ischemic area. Additional study is needed to evaluate potential efficacy.
C1 [Hargrave, Barbara; Burcus, Nina; Lundberg, Cathryn; Bulysheva, Anna; Li, Fanying; Heller, Richard] Old Dominion Univ, Frank Reidy Res Ctr Bioelect, Norfolk, VA 23529 USA.
[Hargrave, Barbara; Heller, Richard] Old Dominion Univ, Coll Hlth Sci, Sch Med Diagnost & Translat Sci, Norfolk, VA USA.
[Strange, Robert, Jr.; Navare, Sagar; Stratton, Michael] Naval Med Ctr Portsmouth, Portsmouth, VA USA.
[Murray, Len] Sobran Inc, Fairfax, VA USA.
RP Heller, R (reprint author), Old Dominion Univ, Frank Reidy Res Ctr Bioelect, Norfolk, VA 23529 USA.
EM rheller@odu.edu
FU National Institutes of Health [R33 HL005441]
FX Funding for this work came from the National Institutes of Health R33
HL005441. The funders had no role in study design, data collection and
analysis, decision to publish, or preparation of the manuscript.
NR 25
TC 2
Z9 2
U1 0
U2 1
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD DEC 29
PY 2014
VL 9
IS 12
AR e115235
DI 10.1371/journal.pone.0115235
PG 23
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AX7UN
UT WOS:000347120200029
PM 25545364
ER
PT J
AU Pollack, A
Alnemrat, S
Chamberlain, TW
Khlobystov, AN
Hooper, JP
Osswald, S
AF Pollack, Andrew
Alnemrat, Sufian
Chamberlain, Thomas W.
Khlobystov, Andrei N.
Hooper, Joseph P.
Osswald, Sebastian
TI Electronic Property Modification of Single-Walled Carbon Nanotubes by
Encapsulation of Sulfur-Terminated Graphene Nanoribbons
SO SMALL
LA English
DT Article
ID RESONANT RAMAN-SCATTERING; OPTICAL-PROPERTIES; LAYER GRAPHENE;
SPECTROSCOPY; OXIDATION; APPROXIMATION; ENERGY; MODES; BAND
AB The use of carbon nanotubes (CNTs) as cylindrical reactor vessels has become a viable means for synthesizing graphene nanoribbons (GNRs). While previous studies demonstrated that the size and edge structure of the as-produced GNRs are strongly dependent on the diameter of the tubes and the nature of the precursor, the atomic interactions between GNRs and surrounding CNTs and their effect on the electronic properties of the overall system are not well understood. Here, it is shown that the functional terminations of the GNR edges can have a strong influence on the electronic structure of the system. Analysis of SWCNTs before and after the insertion of sulfur-terminated GNRs suggests a metallization of the majority of semiconducting SWCNTs. This is indicated by changes in the radial breathing modes and the D and G band Raman features, as well as UV-vis-NIR absorption spectra. The variation in resonance conditions of the nanotubes following GNR insertion make direct (n, m) assignment by Raman spectroscopy difficult. Thus, density functional theory calculations of representative GNR/SWCNT systems are performed. The results confirm significant changes in the band structure, including the development of a metallic state in the semiconducting SWCNTs due to sulfur/tube interactions. The GNR-induced metallization of semiconducting SWCNTs may offer a means of controlling the electronic properties of bulk CNT samples and eliminate the need for a physical separation of semiconducting and metallic tubes.
C1 [Pollack, Andrew; Alnemrat, Sufian; Hooper, Joseph P.; Osswald, Sebastian] Univ Circle Monterey, Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
[Chamberlain, Thomas W.; Khlobystov, Andrei N.] Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England.
[Khlobystov, Andrei N.] Univ Nottingham, Nottingham Nanotechnol & Nanosci Ctr, Nottingham NG7 2RD, England.
RP Osswald, S (reprint author), Purdue Univ, Sch Mat Engn, Neil Armstrong Hall Engn,701 West Stadium Ave, W Lafayette, IN 47907 USA.
EM sosswald@purdue.edu
RI Khlobystov, Andrei/C-1240-2015; alnemrat, sufian/J-4511-2015;
Chamberlain, Thomas/E-1446-2017
OI Khlobystov, Andrei/0000-0001-7738-4098; alnemrat,
sufian/0000-0002-5143-4066; Chamberlain, Thomas/0000-0001-8100-6452
FU Research Initiation Program of NPS' Office of Research, ONR
[N0001414WX00160]; EPSRC; ERC; Royal Society; Nottingham Nanoscience and
Nanotechnology Centre
FX This work was supported by the Research Initiation Program of NPS'
Office of Research, ONR grant N0001414WX00160, the EPSRC, ERC, Royal
Society and Nottingham Nanoscience and Nanotechnology Centre.
NR 56
TC 2
Z9 2
U1 3
U2 40
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1613-6810
EI 1613-6829
J9 SMALL
JI Small
PD DEC 29
PY 2014
VL 10
IS 24
BP 5077
EP 5086
DI 10.1002/smll.201401034
PG 10
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA AW6FD
UT WOS:000346364000010
PM 25123503
ER
PT J
AU Aguilar, A
Sun, W
Liu, L
Lu, JF
McEachern, D
Bernard, D
Deschamps, JR
Wang, SM
AF Aguilar, Angelo
Sun, Wei
Liu, Liu
Lu, Jianfeng
McEachern, Donna
Bernard, Denzil
Deschamps, Jeffrey R.
Wang, Shaomeng
TI Design of Chemically Stable, Potent, and Efficacious MDM2 Inhibitors
That Exploit the Retro-Mannich Ring-Opening-Cyclization Reaction
Mechanism in Spiro-oxindoles
SO JOURNAL OF MEDICINAL CHEMISTRY
LA English
DT Article
ID P53 PATHWAY; PROTEIN; ACTIVATION; MOLECULE; SPIROOXINDOLES;
AMPLIFICATION; ANTAGONISTS; DISCOVERY; BINDING; CANCER
AB Inhibition of the MDM2-p53 protein-protein interaction is being actively pursued as a new anticancer therapeutic strategy, and spiro-oxindoles have been designed as a class of potent and efficacious small-molecule inhibitors of this interaction (MDM2 inhibitors). Our previous study showed that some of our first-generation spiro-oxindoles undergo a reversible ring-opening-cyclization reaction that, from a single compound in protic solution, results in an equilibrium mixture of four diastereoisomers. By exploiting the ring-opening-cyclization reaction mechanism, we have designed and synthesized a series of second-generation spiro-oxindoles with symmetrical pyrrolidine C2 substitution. These compounds undergo a rapid and irreversible conversion to a single, stable diastereoisomer. Our study has yielded compound 31 (MI-1061), which binds to MDM2 with K-i = 0.16 nM, shows excellent chemical stability, and achieves tumor regression in the SJSA-1 xenograft tumor model in mice.
C1 [Aguilar, Angelo; Sun, Wei; Liu, Liu; Lu, Jianfeng; McEachern, Donna; Bernard, Denzil; Wang, Shaomeng] Univ Michigan, Ctr Comprehens Canc, Ann Arbor, MI 48109 USA.
[Aguilar, Angelo; Sun, Wei; Liu, Liu; Lu, Jianfeng; McEachern, Donna; Bernard, Denzil; Wang, Shaomeng] Univ Michigan, Dept Internal Med, Ann Arbor, MI 48109 USA.
[Aguilar, Angelo; Sun, Wei; Liu, Liu; Lu, Jianfeng; McEachern, Donna; Bernard, Denzil; Wang, Shaomeng] Univ Michigan, Dept Pharmacol, Ann Arbor, MI 48109 USA.
[Aguilar, Angelo; Sun, Wei; Liu, Liu; Lu, Jianfeng; McEachern, Donna; Bernard, Denzil; Wang, Shaomeng] Univ Michigan, Dept Med Chem, Ann Arbor, MI 48109 USA.
[Deschamps, Jeffrey R.] Naval Res Lab, Washington, DC 20375 USA.
RP Wang, SM (reprint author), Univ Michigan, Ctr Comprehens Canc, 1500 E Med Ctr Dr, Ann Arbor, MI 48109 USA.
EM shaomeng@umich.edu
RI SUN, Wei/M-1180-2015
FU NCI/NIH [R01CA121279]; University of Michigan Cancer Center grant
[P30CA046592]; Sanofi; Ascenta Therapeutics Inc.
FX This work was supported by grants from the NCI/NIH R01CA121279,
University of Michigan Cancer Center grant P30CA046592, Sanofi, and
Ascenta Therapeutics Inc. We thank Dr. G. W. A. Milne for editing of the
manuscript.
NR 33
TC 7
Z9 7
U1 6
U2 24
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0022-2623
EI 1520-4804
J9 J MED CHEM
JI J. Med. Chem.
PD DEC 25
PY 2014
VL 57
IS 24
BP 10486
EP 10498
DI 10.1021/jm501541j
PG 13
WC Chemistry, Medicinal
SC Pharmacology & Pharmacy
GA AY2RR
UT WOS:000347437400021
PM 25496041
ER
PT J
AU Keller, TM
Laskoski, M
Saab, AP
Qadri, SB
Kolel-Veetil, M
AF Keller, Teddy M.
Laskoski, Matthew
Saab, Andrew P.
Qadri, Syed B.
Kolel-Veetil, Manoj
TI In Situ Formation of Nanoparticle Titanium Carbide/Nitride Shaped
Ceramics from Meltable Precursor Composition
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID CARBOTHERMAL REDUCTION; TIC POWDERS; CARBON; CARBIDES; GEL
AB A new synthetic method has been developed for the in situ formation of TiC and TiN nanoparticles in a shaped solid from a meltable precursor composition. The reactants are titanium hydride (TiH2) and 1,2,4,5-tetrakis(phenylethynyl)benzene (TPEB), which interact above 600 degrees C to form TiC and TiN nanoparticles in the presence of argon and nitrogen, respectively. When the compacted powdered precursor composition is heated above 200 degrees C, the acetylenic units of TPEB react forming a networked polymer with the TiH2 homogeneously dispersed in the confines of the thermoset. During the carbonization process of 1,2,4,5-tetrakis(phenylethynyl)benzene, the carbon atom migrate into the interstitial space of the Ti lattice, resulting in stoichiometric TiC being formed. The novel reaction yields shaped solids of nanoparticle ceramics.
C1 [Keller, Teddy M.; Laskoski, Matthew; Saab, Andrew P.; Kolel-Veetil, Manoj] Naval Res Lab, Div Chem, Washington, DC 20375 USA.
[Qadri, Syed B.] Naval Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
RP Keller, TM (reprint author), Naval Res Lab, Div Chem, Code 6120, Washington, DC 20375 USA.
EM teddy.keller@nrl.navy.mil
FU Office of Naval Research (ONR)
FX The authors wish to thank the Office of Naval Research (ONR) for
financial support of this work.
NR 32
TC 1
Z9 1
U1 11
U2 37
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD DEC 25
PY 2014
VL 118
IS 51
BP 30153
EP 30161
DI 10.1021/jp5082388
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA AY1NR
UT WOS:000347360200080
ER
PT J
AU Breckenfeld, E
Chen, ZH
Damodaran, AR
Martin, LW
AF Breckenfeld, Eric
Chen, Zuhuang
Damodaran, Anoop. R.
Martin, Lane W.
TI Effects of Nonequilibrium Growth, Nonstoichiometry, and Film Orientation
on the Metal-to-Insulator Transition in NdNiO3 Thin Films
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE nickelates; epitaxial thin films; stoichiometry; strain; transport
ID PULSED-LASER DEPOSITION; PRESSURE-DEPENDENCE; STOICHIOMETRY;
PEROVSKITES; DEFECTS
AB Next-generation devices will rely on exotic functional properties not found in traditional systems. One class of materials of particular interest for applications are those possessing metal-to-insulator transitions (MITs). In this work, we probe the relationship between variations in the growth process, subsequent variations in cation stoichiometry, and the MIT in NdNiO3 thin films. Slight variations in the growth conditions, in particular the laser fluence, during pulsed-laser deposition growth of NdNiO3 produces films that are both single-phase and coherently strained to a range of substrates despite possessing as much as 15% Nd-excess. Subsequent study of the temperature-dependence of the electronic transport reveals dramatic changes in both the onset and magnitude of the resistivity change at the MIT with increasing cation nonstoichiometry giving rise to a decrease (and ultimately a suppression) of the transition and the magnitude of the resistivity change. From there, the electronic transport of nearly ideal NdNiO3 thin films are studied as a function of epitaxial strain, thickness, and orientation. Overall, transitioning from tensile to compressive strain results in a systematic reduction of the onset and magnitude of the resistivity change across the MIT, thinner films are found to possess sharper MITs with larger changes in the resistivity at the transition, and (001)-oriented films exhibit sharper and larger MITs as compared to (110)- and (111)-oriented films as a result of highly anisotropic in-plane transport in the latter.
C1 [Breckenfeld, Eric] Naval Res Lab, Mat Sci & Technol Div, Washington, DC 20475 USA.
[Chen, Zuhuang; Damodaran, Anoop. R.; Martin, Lane W.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Martin, Lane W.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Martin, LW (reprint author), Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
EM lwmartin@berkeley.edu
RI Chen, Zuhuang/E-7131-2011; Martin, Lane/H-2409-2011
OI Chen, Zuhuang/0000-0003-1912-6490; Martin, Lane/0000-0003-1889-2513
FU National Science Foundation [DMR-1124696]; Air Force Office of
Scientific Research [FA9550-12-1-0471]; Army Research Office
[W911NF-14-1-0104]; Department of Energy [DE-SC0012375]
FX E.B. acknowledges the support of the National Science Foundation under
grant DMR-1124696. Z.H.C. acknowledges the support of the Air Force
Office of Scientific Research under grant FA9550-12-1-0471. A.R.D.
acknowledges support from the Army Research Office under grant
W911NF-14-1-0104. L.W.M. acknowledges support from the Department of
Energy under grant DE-SC0012375.
NR 41
TC 13
Z9 13
U1 0
U2 42
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 DEC 24
PY 2014
VL 6
IS 24
BP 22436
EP 22444
DI 10.1021/am506436s
PG 9
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA AX8DA
UT WOS:000347139400082
PM 25454898
ER
PT J
AU Elias, JS
Risch, M
Giordano, L
Mansour, AN
Shao-Horn, Y
AF Elias, Joseph S.
Risch, Marcel
Giordano, Livia
Mansour, Azzam N.
Shao-Horn, Yang
TI Structure, Bonding, and Catalytic Activity of Monodisperse,
Transition-Metal-Substituted CeO2 Nanoparticles
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID X-RAY-ABSORPTION; CO OXIDATION; CARBON-MONOXIDE; CERIUM OXIDE; ISOTOPIC
EXCHANGE; CRYSTAL-STRUCTURE; OXYGEN; COPPER; CU; SURFACE
AB We present a simple and generalizable synthetic route toward phase-pure, monodisperse transition-metal-substituted ceria nanoparticles (M0.1Ce0.9O2-x, M = Mn, Fe, Co, Ni, Cu). The solution-based pyrolysis of a series of heterobimetallic Schiff base complexes ensures a rigorous control of the size, morphology and composition of 3 nm M0.1Ce0.9O2-x crystallites for CO oxidation catalysis and other applications. X-ray absorption spectroscopy confirms the dispersion of aliovalent (M3+ and M2+) transition metal ions into the ceria matrix without the formation of any bulk transition metal oxide phases, while steady-state CO oxidation catalysis reveals an order of magnitude increase in catalytic activity with copper substitution. Density functional calculations of model slabs of these compounds confirm the stabilization of M3+ and M2+ in the lattice of CeO2. These results highlight the role of the host CeO2 lattice in stabilizing high oxidation states of aliovalent transition metal dopants that ordinarily would be intractable, such as Cu3+, as well as demonstrating a rational approach to catalyst design. The current work demonstrates, for the first time, a generalizable approach for the preparation of transition-metal-substituted CeO2 for a broad range of transition metals with unparalleled synthetic control and illustrates that Cu3+ is implicated in the mechanism for CO oxidation on CuO-CeO2 catalysts.
C1 [Elias, Joseph S.] MIT, Dept Chem, Cambridge, MA 02139 USA.
[Risch, Marcel; Shao-Horn, Yang] MIT, Elect Res Lab, Cambridge, MA 02139 USA.
[Shao-Horn, Yang] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA.
[Giordano, Livia; Shao-Horn, Yang] MIT, Dept Mech Engn, Cambridge, MA 02139 USA.
[Giordano, Livia] Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy.
[Mansour, Azzam N.] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA.
RP Elias, JS (reprint author), MIT, Dept Chem, Cambridge, MA 02139 USA.
EM jselias@mit.edu; shaohorn@mit.edu
OI Elias, Joseph/0000-0002-2941-777X
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-98CH10886]; Center for Nanophase Materials Sciences at
Oak Ridge National Laboratory [CNMS2013-292]; Canada Foundation for
Innovation; Natural Sciences and Engineering Research Council of Canada;
National Research Council Canada; Canadian Institutes of Health
Research; Government of Saskatchewan; Western Economic Diversification
Canada; University of Saskatchewan; Philip Morris International;
National Science Foundation Graduate Research Fellowship [DGE-1122374];
National Science Foundation [CHE-0946721]
FX Use of the National Synchrotron Light Source, Brookhaven National
Laboratory, was supported by the U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-98CH10886. DFT computations in this work were benefited from the
use of the National Energy Research Scientific Computing Center
allocation of the Center for Nanophase Materials Sciences at Oak Ridge
National Laboratory under Grant Number CNMS2013-292. Research described
in this paper was also performed at the Canadian Light Source, which is
funded by the Canada Foundation for Innovation, the Natural Sciences and
Engineering Research Council of Canada, the National Research Council
Canada, the Canadian Institutes of Health Research, the Government of
Saskatchewan, Western Economic Diversification Canada, and the
University of Saskatchewan. This work was partially supported by Philip
Morris International. J.S.E. was supported by the National Science
Foundation Graduate Research Fellowship under Grant No. DGE-1122374. The
X-ray diffractometer used for single-crystal studies was purchased with
the help of funding from the National Science Foundation under Grant No.
CHE-0946721. The authors would like to thank Ms. Kelsey Stoerzinger at
MIT and Ms. Sarah Purdy at University of Saskatchewan for their
assistance with soft XAS, Mr. Thomas Carney at MIT for assistance with
ICP-AES, and thanks are due to the staff members at beamline X11A at
NSLS and beamline SGM at CLS. The authors would like to thank Professor
Yuriy Roman and his lab at MIT for helpful discussions concerning
reactor design and Dr. Peter Muller at MIT for acquiring the
single-crystal diffraction data.
NR 52
TC 28
Z9 28
U1 22
U2 176
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD DEC 20
PY 2014
VL 136
IS 49
BP 17193
EP 17200
DI 10.1021/ja509214d
PG 8
WC Chemistry, Multidisciplinary
SC Chemistry
GA AW8YC
UT WOS:000346544200035
PM 25406101
ER
PT J
AU Sheeley, NR
Warren, HP
Lee, J
Chung, S
Katz, J
Namkung, M
AF Sheeley, N. R., Jr.
Warren, H. P.
Lee, J.
Chung, S.
Katz, J.
Namkung, M.
TI USING RUNNING DIFFERENCE IMAGES TO TRACK PROPER MOTIONS OF XUV CORONAL
INTENSITY ON THE SUN
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: corona; Sun: magnetic fields; Sun: UV radiation
ID EUV IMAGING SPECTROMETER; ACTIVE-REGION; POLAR PLUMES; FILAMENT
CHANNELS; UMBRAL FLASHES; SOLAR CORONA; WAVES; OSCILLATIONS; OUTFLOWS;
CHROMOSPHERE
AB We have developed a procedure for observing and tracking proper motions of faint XUV coronal intensity on the Sun and have applied this procedure to study the collective motions of cellular plumes and the shorter-period waves in sunspots. Our space/time maps of cellular plumes show a series of tracks with the same 5-8 minute repetition times and similar to 100 km s(-1) sky-plane speeds found previously in active-region fans and in coronal hole plumes. By synchronizing movies and space/time maps, we find that the tracks are produced by elongated ejections from the unipolar flux concentrations at the bases of the cellular plumes and that the phases of these ejections are uncorrelated from cell to cell. Thus, the large-scale motion is not a continuous flow, but is more like a system of independent conveyor belts all moving in the same direction along the magnetic field. In contrast, the proper motions in sunspots are clearly waves resulting from periodic disturbances in the sunspot umbras. The periods are similar to 2.6 minutes, but the sky-plane speeds and wavelengths depend on the heights of the waves above the sunspot. In the chromosphere, the waves decelerate from 35-45 km s(-1) in the umbra to 7-8 km s(-1) toward the outer edge of the penumbra, but in the corona, the waves accelerate to similar to 60-100 km s(-1). Because chromospheric and coronal tracks originate from the same space/time locations, the coronal waves must emerge from the same umbral flashes that produce the chromospheric waves.
C1 [Sheeley, N. R., Jr.; Warren, H. P.; Lee, J.] US Navy, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Sheeley, NR (reprint author), US Navy, Res Lab, Div Space Sci, Washington, DC 20375 USA.
EM neil.sheeley@nrl.navy.mil; harry.warren@nrl.navy.mil
OI Warren, Harry/0000-0001-6102-6851
FU Naval Research Enterprise Internship Program(NREIP) at NRL; NASA; Office
of Naval Research
FX We are grateful to Nathan Rich (NRL) for his continuing help in the
development of software for observing and analyzing SOHO, STEREO, and
SDO images. We are grateful to the AIA and HMI science teams for
providing observations from the NASA SDO spacecraft, and especially to
Sam Freeland (Lockheed), Todd Hoeksema (Stanford), Marc de Rosa
(Lockheed), and Phil Scherrer (Stanford) for help with downloading the
data. It is a pleasure to acknowledge Jack Harvey (NSO), Frank Hill
(NSO), G. Stenborg (GMU), Yi-Ming Wang (NRL), and Peter Young (GMU) for
useful scientific discussions. One of us (S. C.) acknowledges support
from the Naval Research Enterprise Internship Program(NREIP) at NRL. Two
of us (J.K. and M.N.) thank NRL for allowing us to participate in this
research as NRL Student Volunteers. Financial support was provided by
NASA and the Office of Naval Research.
NR 41
TC 2
Z9 2
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD DEC 20
PY 2014
VL 797
IS 2
AR 131
DI 10.1088/0004-637X/797/2/131
PG 25
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AW5BS
UT WOS:000346291600059
ER
PT J
AU Shah, K
Drake, SJ
Wetz, DA
Ostanek, JK
Miller, SP
Heinzel, JM
Jain, A
AF Shah, K.
Drake, S. J.
Wetz, D. A.
Ostanek, J. K.
Miller, S. P.
Heinzel, J. M.
Jain, A.
TI An experimentally validated transient thermal model for cylindrical
Li-ion cells
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Lithium-ion cells; Energy conversion; Transient thermal management;
Battery cooling; Laplace transforms
ID MANAGEMENT-SYSTEM; PHASE-CHANGE; BATTERIES; LITHIUM; PACKS
AB Measurement and modeling of thermal phenomena in Li-ion cells is a critical research challenge that directly affects both performance and safety. Even though the operation of a Li-ion cell is in most cases a transient phenomenon, most available thermal models for Li-ion cells predict only steady-state temperature fields. This paper presents the derivation, experimental validation and application of an analytical model to predict the transient temperature field in a cylindrical Li-ion cell in response to time-varying heat generation within the cell. The derivation is based on Laplace transformation of governing energy equations, and accounts for anisotropic thermal conduction within the cell. Model predictions are in excellent agreement with experimental measurements on a thermal test cell. The effects of various thermophysical properties and parameters on transient thermal characteristics of the cell are analyzed. The effect of pulse width and cooling time for pulsed operation is quantified. The thermal response to multiple cycles of discharge and charge is computed, and cell-level trade-offs for this process are identified. The results presented in this paper may help understand thermal phenomena in Li-ion cells, and may contribute towards thermal design and optimization tools for energy conversion and storage systems based on Li-ion cells. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Shah, K.; Drake, S. J.; Jain, A.] Univ Texas Arlington, Mech & Aerosp Engn Dept, Arlington, TX USA.
[Wetz, D. A.] Univ Texas Arlington, Dept Elect Engn, Arlington, TX USA.
[Ostanek, J. K.; Miller, S. P.; Heinzel, J. M.] US Navy, Carderock Div, Naval Surface Warfare Ctr, Washington, DC USA.
RP Jain, A (reprint author), 500 W First St,Rm 211, Arlington, TX 76019 USA.
EM jaina@uta.edu
OI Shah, Krishna/0000-0002-7802-6361
FU ONR [N000141310819]
FX This research was partly under ONR grant number N000141310819. The
authors acknowledge assistance from Mr. Jared Jones in automation of
data acquisition for the experiments.
NR 28
TC 14
Z9 14
U1 3
U2 61
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
EI 1873-2755
J9 J POWER SOURCES
JI J. Power Sources
PD DEC 20
PY 2014
VL 271
BP 262
EP 268
DI 10.1016/j.jpowsour.2014.07.118
PG 7
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA AR2CQ
UT WOS:000343391600035
ER
PT J
AU Stroman, RO
Jackson, GS
Garsany, Y
Swider-Lyons, K
AF Stroman, Richard O.
Jackson, Gregory S.
Garsany, Yannick
Swider-Lyons, Karen
TI A calibrated hydrogen-peroxide direct-borohydride fuel cell model
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Fuel cell; Borohydride; Design; Transport; Power density; Reactant
utilization
ID SODIUM-BOROHYDRIDE; OXIDATION; KINETICS; CATHODE; ELECTROCATALYST;
DECOMPOSITION; GENERATION; HYDROLYSIS; ELECTRODES; PARAMETERS
AB A numerical model with global reaction rates is calibrated to measurements from a simple hydrogen-peroxide direct-borohydride fuel cell (H2O2-DBFC), and then used to unravel complex electrochemical and competing parasitic reactions. In this H2O2-DBFC, fuel (1-50 mM NaBH4/2 M NaOH) is oxidized at a Au anode and oxidizer (10-40 mM H2O2/1 M H2SO4) is reduced at a Pd:Ir cathode. Polarization curves and electrode potentials, as functions of fuel and oxidizer feeds support global reaction rate parameter fitting. The measurements and calibrated model showed H2O2 decomposition at the cathode depresses open circuit voltage from 3.01 V theoretical to 1.65 V, and when H2O2 supply is limited, cathode potentials are sufficiently negative to make H+ reduction to H-2 thermodynamically favorable. Calibrated model results show that thin concentration boundary layers limit reactant utilization and current density. Decreasing the inlet concentrations, flow rates, and cell voltage slow parasitic reactions and favor desirable charge transfer reactions. Peak conversion efficiency and peak power density coincide because thermodynamic efficiency and parasitic reaction rates decrease (relative to charge transfer reaction rates) with increasing current density. We conclude that the performance of a fuel cell with parasitic side reactions can be predicted through numerical modeling. Published by Elsevier B.V.
C1 [Stroman, Richard O.; Swider-Lyons, Karen] US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
[Stroman, Richard O.] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA.
[Jackson, Gregory S.] Colorado Sch Mines, Dept Mech Engn, Golden, CO 80401 USA.
[Garsany, Yannick] EXCET Inc, Springfield, VA 22151 USA.
RP Stroman, RO (reprint author), US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
EM richard.stroman@nrl.navy.mil
RI Jackson, Gregory/N-9919-2014; Stroman, Richard/F-6868-2014
OI Jackson, Gregory/0000-0002-8928-2459; Stroman,
Richard/0000-0003-4937-8365
FU NRL Edison Memorial Training Program; NRL Chemistry Division; Office of
Naval Research
FX The authors gratefully acknowledge the support of the NRL Edison
Memorial Training Program, the NRL Chemistry Division, and the Office of
Naval Research for their support of this work.
NR 42
TC 4
Z9 4
U1 3
U2 25
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
EI 1873-2755
J9 J POWER SOURCES
JI J. Power Sources
PD DEC 20
PY 2014
VL 271
BP 421
EP 430
DI 10.1016/j.jpowsour.2014.07.139
PG 10
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA AR2CQ
UT WOS:000343391600056
ER
PT J
AU Zabetakis, D
Olson, MA
Anderson, GP
Legler, PM
Goldman, ER
AF Zabetakis, Dan
Olson, Mark A.
Anderson, George P.
Legler, Patricia M.
Goldman, Ellen R.
TI Evaluation of Disulfide Bond Position to Enhance the Thermal Stability
of a Highly Stable Single Domain Antibody
SO PLOS ONE
LA English
DT Article
ID HEAVY-CHAIN ANTIBODIES; FRAGMENTS; STABILIZATION; REPERTOIRE;
IDENTIFICATION; IMMUNOASSAY; EVOLUTION; SELECTION; REGIONS; TOXIN
AB Single domain antibodies are the small recombinant variable domains derived from camelid heavy-chain-only antibodies. They are renowned for their stability, in large part due to their ability to refold following thermal or chemical denaturation. In addition to refolding after heat denaturation, A3, a high affinity anti-Staphylococcal Enterotoxin B single domain antibody, possesses a melting temperature of similar to 84 degrees C, among the highest reported for a single domain antibody. In this work we utilized the recently described crystal structure of A3 to select locations for the insertion of a second disulfide bond and evaluated the impact that the addition of this second bond had on the melting temperature. Four double-disulfide versions of A3 were constructed and each was found to improve the melting temperature relative to the native structure without reducing affinity. Placement of the disulfide bond at a previously published position between framework regions 2 and 3 yielded the largest improvement (>6 degrees C), suggesting this location is optimal, and seemingly provides a universal route to raise the melting temperature of single domain antibodies. This study further demonstrates that even single domain antibodies with extremely high melting points can be further stabilized by addition of disulfide bonds.
C1 [Zabetakis, Dan; Anderson, George P.; Legler, Patricia M.; Goldman, Ellen R.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
[Olson, Mark A.] USAMRIID, Dept Cell Biol & Biochem, Frederick, MD 21702 USA.
RP Goldman, ER (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
EM ellen.goldman@nrl.navy.mil
RI Anderson, George/D-2461-2011
OI Anderson, George/0000-0001-7545-9893
FU Defense Threat Reduction Agency [CBCALL12-LS6-2-0036]
FX This work was supported by the Defense Threat Reduction Agency
(CBCALL12-LS6-2-0036). The funders had no role in study design, data
collection and analysis, decision to publish or preparation of the
manuscript.
NR 39
TC 4
Z9 4
U1 2
U2 26
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD DEC 19
PY 2014
VL 9
IS 12
AR e115405
DI 10.1371/journal.pone.0115405
PG 14
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AX8WK
UT WOS:000347186200025
PM 25526640
ER
PT J
AU Cunningham, PD
Khachatrian, A
Buckhout-White, S
Deschamps, JR
Goldman, ER
Medintz, IL
Melinger, JS
AF Cunningham, Paul D.
Khachatrian, Ani
Buckhout-White, Susan
Deschamps, Jeffrey R.
Goldman, Ellen R.
Medintz, Igor L.
Melinger, Joseph S.
TI Resonance Energy Transfer in DNA Duplexes Labeled with Localized Dyes
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID SINGLE-MOLECULE FLUORESCENCE; PHOTONIC WIRES; FRET; PHOTOPHYSICS;
ORIENTATION; DEPENDENCE; DYNAMICS; SYSTEM; ACIDS; CY3
AB The growing maturity of DNA-based architectures has raised considerable interest in applying them to create photoactive light harvesting and sensing devices. Toward optimizing efficiency in such structures, resonant energy transfer was systematically examined in a series of dye-labeled DNA duplexes where donor-acceptor separation was incrementally changed from 0 to 16 base pairs. Cyanine dyes were localized on the DNA using double phosphoramidite attachment chemistry. Steady state spectroscopy, single-pair fluorescence, time-resolved fluorescence, and ultrafast two-color pump-probe methods were utilized to examine the energy transfer processes. Energy transfer rates were found to be more sensitive to the distance between the Cy3 donor and Cy5 acceptor dye molecules than efficiency measurements. Picosecond energy transfer and near-unity efficiencies were observed for the closest separations. Comparison between our measurements and the predictions of Forster theory based on structural modeling of the dye-labeled DNA duplex suggest that the double phosphoramidite linkage leads to a distribution of intercalated and nonintercalated dye orientations. Deviations from the predictions of Forster theory point to a failure of the point dipole approximation for separations of less than 10 base pairs. Interactions between the dyes that alter their optical properties and violate the weak-coupling assumption of Foster theory were observed for separations of less than four base pairs, suggesting the removal of nucleobases causes DNA deformation and leads to enhanced dye-dye interaction.
C1 [Cunningham, Paul D.; Khachatrian, Ani; Buckhout-White, Susan; Deschamps, Jeffrey R.; Goldman, Ellen R.; Medintz, Igor L.; Melinger, Joseph S.] US Naval Res Lab, Washington, DC 20375 USA.
[Khachatrian, Ani] Sotera Def, Annapolis Jct, MD 20701 USA.
[Buckhout-White, Susan] George Mason Univ, Manassas, VA 20110 USA.
RP Cunningham, PD (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM paul.cunningham@nrl.navy.mil; joseph.melinger@nrl.navy.mil
FU Nanoscience Institute at the Naval Research Laboratory; Office of Naval
Research
FX This work was supported by the Nanoscience Institute at the Naval
Research Laboratory and the Office of Naval Research.
NR 50
TC 11
Z9 11
U1 6
U2 64
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD DEC 18
PY 2014
VL 118
IS 50
BP 14555
EP 14565
DI 10.1021/jp5065006
PG 11
WC Chemistry, Physical
SC Chemistry
GA AX2FQ
UT WOS:000346759400001
PM 25397906
ER
PT J
AU Papeer, J
Botton, M
Gordon, D
Sprangle, P
Zigler, A
Henis, Z
AF Papeer, J.
Botton, M.
Gordon, D.
Sprangle, P.
Zigler, A.
Henis, Z.
TI Extended lifetime of high density plasma filament generated by a dual
femtosecond-nanosecond laser pulse in air
SO NEW JOURNAL OF PHYSICS
LA English
DT Article
DE femtosecond filamentation; plasma filaments; high power lasers; air
plasma; laser plasma interaction
ID TRANSPARENT MEDIA
AB A substantially extended lifetime of a high-density plasma channel generated in the wake of an intense femtosecond pulse propagating in air is experimentally demonstrated. Free electron density above 10(15) cm(-3) in the formed plasma filament is measured to be sustained for more than 30 ns. This high-density plasma lifetime prolongation of more than one order of magnitude is achieved by properly timed irradiation of the filament with a relatively low-intensity nanosecond laser pulse, in comparison with a filament without such irradiation. The experimental results are in good agreement with our theoretical model that follows the evolution of the temperature and density of various molecules, atoms, and ion species. The results point to the possibility of generating extremely long time duration, stable high-density plasma filaments in air.
C1 [Papeer, J.; Botton, M.; Zigler, A.; Henis, Z.] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel.
[Gordon, D.; Sprangle, P.] Naval Res Lab, Plasma Div, Washington, DC 20375 USA.
RP Papeer, J (reprint author), Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel.
EM Evgeny.Papeer@mail.huji.ac.il
FU Israeli Science Foundation [1545]
FX This work was supported by the Israeli Science Foundation, grant number
1545.
NR 22
TC 9
Z9 9
U1 2
U2 30
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1367-2630
J9 NEW J PHYS
JI New J. Phys.
PD DEC 17
PY 2014
VL 16
AR 123046
DI 10.1088/1367-2630/16/12/123046
PG 10
WC Physics, Multidisciplinary
SC Physics
GA AX3EC
UT WOS:000346822200004
ER
PT J
AU Zawdie, KA
Huba, JD
AF Zawdie, K. A.
Huba, J. D.
TI Can HF heating generate ESF bubbles?
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
DE artificial HF heating; ionosphere; bubbles
ID EQUATORIAL SPREAD-F; POWER RADIO-WAVES; MODEL
AB The injection of powerful HF waves into the ionosphere can lead to strong electron heating followed by a pressure perturbation which can locally reduce the plasma density. In the postsunset equatorial ionosphere, density perturbations can provide the seed to generate equatorial spread F (ESF) bubbles. In this paper, a modified version of the SAMI3/ESF ionosphere code is used to model the density depletions created by HF heating and to determine if ESF bubbles can be artificially generated. It is found that HF heating primarily redistributes plasma along the geomagnetic field and does not significantly perturb the flux tube integrated conductivities. Thus, HF heating does not appear to be a viable method to seed or generate ESF bubbles.
C1 [Zawdie, K. A.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Huba, J. D.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Zawdie, KA (reprint author), Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
EM kate.zawdie@nrl.navy.mil
OI Zawdie, Kate/0000-0001-7192-4356
FU NRL Base Funds; LWS NASA grant
FX We thank Paul Bernhardt for suggesting this problem and providing useful
insights, and Clayton Coker and Sarah McDonald for helpful
conversations. This research has been supported by NRL Base Funds and an
LWS NASA grant (J.D.H.). This work is from a dissertation to be
submitted to the Graduate School, University of Maryland, by Katherine
Zawdie in partial fulfillment of the requirements for the PhD. degree in
Physics. Data are available on request from the lead author.
NR 19
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U1 1
U2 1
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 DEC 16
PY 2014
VL 41
IS 23
BP 8155
EP 8160
DI 10.1002/2014GL062293
PG 6
WC Geosciences, Multidisciplinary
SC Geology
GA AZ8JP
UT WOS:000348462000002
ER
PT J
AU Huba, JD
Sazykin, S
AF Huba, J. D.
Sazykin, S.
TI Storm time ionosphere and plasmasphere structuring: SAMI3-RCM simulation
of the 31 March 2001 geomagnetic storm
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
DE magnetic storm; SAMI3; RCM model; simulation study; ionosphere
ID ELECTRIC-FIELD; LATITUDE IONOSPHERE; MODEL; MAGNETOSPHERE; PENETRATION;
SATURATION; DENSITY; SYSTEM; DRIVEN
AB We present the first self-consistent modeling study of the ionosphere-plasmasphere system response to a geomagnetic storm. We use the coupled SAMI3-Rice Convention Model (RCM) of the global ionosphere and inner magnetosphere, with self-consistent electrodynamics, to simulate the 31 March 2001 magnetic storm. We find that the penetration electric fields associated with the magnetic storm lead to a storm time-enhanced density (SED) in the low- to middle-latitude ionosphere and that the separation in latitude of the Appleton anomaly peaks increases. The SED exhibits magnetic conjugacy, occurring in both the Northern and Southern Hemispheres. Moreover, mapping the boundary of the SED into the equatorial plane coincides with the development of a plume-like structure in the plasmasphere. These preliminary results are consistent with observations.
C1 [Huba, J. D.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Sazykin, S.] Rice Univ, Dept Phys & Astron, Houston, TX USA.
RP Huba, JD (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
EM huba@nrl.navy.mil
RI Sazykin, Stanislav/C-3775-2008
OI Sazykin, Stanislav/0000-0002-9401-4248
FU LWS NASA grant; NRL Base Funds; NASA [NNX10AL04G, NNX10AQ43G,
NNX11AJ38G]; NSF [OCI-0959097]; NIH [NCRR S10RR02950]; IBM Shared
University Research (SUR) Award; CISCO; Qlogic; Adaptive Computing
FX This research has been supported by an LWS NASA grant and NRL Base
Funds. Work at Rice University was supported by NASA grants NNX10AL04G,
NNX10AQ43G, and NNX11AJ38G. Computing resources supporting this work at
Rice University were provided by the NASA High-End Computing (HEC)
Program through the NASA Advanced Supercomputing (NAS) Division at Ames
Research Center, and by Rice University in part by the Data Analysis and
Visualization Cyberinfrastructure funded by NSF under grant OCI-0959097,
and by NIH award NCRR S10RR02950 and an IBM Shared University Research
(SUR) Award in partnership with CISCO, Qlogic, and Adaptive Computing.
Data are available upon request from the lead author. Lastly, we
acknowledge use of NASA/GSFC's Space Physics Data Facility's OMNIWeb (or
CDAWeb or ftp) service, and OMNI data.
NR 33
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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 DEC 16
PY 2014
VL 41
IS 23
BP 8208
EP 8214
DI 10.1002/2014GL062110
PG 7
WC Geosciences, Multidisciplinary
SC Geology
GA AZ8JP
UT WOS:000348462000009
ER
PT J
AU Cheriton, OM
McPhee-Shaw, EE
Storlazzi, CD
Rosenberger, KJ
Shaw, WJ
Raanan, BY
AF Cheriton, Olivia M.
McPhee-Shaw, Erika E.
Storlazzi, Curt D.
Rosenberger, Kurt J.
Shaw, William J.
Raanan, Ben Y.
TI Upwelling rebound, ephemeral secondary pycnoclines, and the creation of
a near-bottom wave guide over the Monterey Bay continental shelf
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
DE upwelling; internal waves of elevation; near-bed pycnocline; continental
shelf; Monterey Bay
ID INTERNAL SOLITARY WAVES; SUBMARINE-CANYON; INNER-SHELF; TIDES;
STRATIFICATION; VARIABILITY; CALIFORNIA; TRANSPORT; SYSTEM
AB Several sequential upwelling events were observed in fall 2012, using measurements from the outer half of the continental shelf in Monterey Bay, during which the infiltration of dense water onto the shelf created a secondary, near-bottom pycnocline. This deep pycnocline existed in concert with the near-surface pycnocline and enabled the propagation of near-bottom, cold, semidiurnal internal tidal bores, as well as energetic, high-frequency, nonlinear internal waves of elevation (IWOE). The IWOE occurred within 20m of the bottom, had amplitudes of 8-24m, periods of 6-45min, and depth-integrated energy fluxes up to 200Wm(-1). Iribarren numbers (<0.03) indicate that these IWOE were nonbreaking in this region of the shelf. These observations further demonstrate how regional upwelling dynamics and the resulting bulk, cross-margin hydrography is a first-order control on the ability of internal waves, at tidal and higher frequencies, to propagate through continental shelf waters.
C1 [Cheriton, Olivia M.; Storlazzi, Curt D.; Rosenberger, Kurt J.] US Geol Survey, Pacific Coastal & Marine Sci Ctr, Santa Cruz, CA 95060 USA.
[McPhee-Shaw, Erika E.] Western Washington Univ, Shannon Point Marine Ctr, Anacortes, WA USA.
[Shaw, William J.] US Naval Postgrad Sch, Dept Oceanog, Monterey, CA USA.
[Raanan, Ben Y.] Calif State Univ, Moss Landing Marine Labs, Moss Landing, CA USA.
RP Cheriton, OM (reprint author), US Geol Survey, Pacific Coastal & Marine Sci Ctr, Santa Cruz, CA 95060 USA.
EM ocheriton@usgs.gov
OI Cheriton, Olivia/0000-0003-3011-9136
FU National Science Foundation [OCE0961810]; U.S. Geological Survey's
Coastal and Marine Geology Program
FX This project was funded by the National Science Foundation (grant
OCE0961810 to McPhee-Shaw, Bellingham, Shaw, and Stanton) and by the
U.S. Geological Survey's Coastal and Marine Geology Program. We thank C.
Hunter, T. Elfers, P. Dal Ferro, J. White, and J. Ferreira for
deployment support. We are grateful to M. McManus at the University of
Hawaii at Manoa for loaning us the autonomous profiler. J. Sevadjian
(MLML) provided helpful discussions. B. Edwards and J. Reid supplied the
mud belt sediment distribution data shown in Figure 1, and N. Golden
assisted with the mapping of these data. We thank the captain and crews
of the R/V Pt Sur. We are grateful to C. Sherwood for an initial review
of the manuscript, and to B. Weller and an anonymous reviewer for their
helpful comments. Use of trademark names does not imply U.S. government
endorsement of product. The USGS data sets presented herein can be
obtained by sending a written request to the corresponding author.
NR 32
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U1 1
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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 DEC 16
PY 2014
VL 41
IS 23
BP 8503
EP 8511
DI 10.1002/2014GL061897
PG 9
WC Geosciences, Multidisciplinary
SC Geology
GA AZ8JP
UT WOS:000348462000046
ER
PT J
AU Newsome, GA
Ackerman, LK
Johnson, KJ
AF Newsome, G. Asher
Ackerman, Luke K.
Johnson, Kevin J.
TI Humidity Affects Relative Ion Abundance in Direct Analysis in Real Time
Mass Spectrometry of Hexamethylene Triperoxide Diamine
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID DIELECTRIC BARRIER DISCHARGE; TEMPERATURE PLASMA PROBE; AMBIENT
CONDITIONS; IONIZATION SOURCE; VAPOR-PRESSURES; HMTD
AB Unstable explosive hexamethylene triperoxide diamine (HMTD) is dangerous in quantity and benefits from the minimal sampling handling associated with atmospheric pressure chemical ionization for mass spectral analysis. Seasonal variation observed in HMTD mass spectra suggested a humidity dependence. Therefore, direct analysis in real time (DART) ionization mass spectra were acquired at a range of humidity values. An enclosure was designed to fit around the ion source and mass spectrometer inlet at atmospheric pressure. The enclosure was supplied with controlled amounts of humidified air from a test atmosphere generator to create programmable conditions for ambient analysis. The relative abundance and fragmentation of analyte ions were observed to change reliably with changing humidity values and, to a lesser degree, temperature. Humidity at such plasma-based ion sources should be regulated to avoid similar to 90% shifts in relative ion abundance and provide stability and reproducibility of HMTD analysis.
C1 [Newsome, G. Asher] Nova Res Inc, Alexandria, VA 22308 USA.
[Ackerman, Luke K.] US FDA, Ctr Food Safety & Appl Nutr, Off Regulatory Sci, Div Analyt Chem, College Pk, MD 20740 USA.
[Johnson, Kevin J.] US Naval Res Lab, Naval Tech Ctr Safety & Survivabil, Washington, DC 20375 USA.
RP Newsome, GA (reprint author), Nova Res Inc, 1900 Elkin St,Suite 230, Alexandria, VA 22308 USA.
EM graham.newsome.ctr@nrl.navy.mil
RI Newsome, G. Asher/J-8970-2012; Ackerman, Luke/E-4597-2011
OI Newsome, G. Asher/0000-0003-1683-2197; Ackerman,
Luke/0000-0001-6626-3039
FU Office of Naval Research (ONR) through the Naval Research Laboratory's
Basic Research Program
FX The authors wish to thank Michael Malito of Nova Research, Inc., for
assistance with designing the source enclosure and Lauryn DeGreeff-Silk
of the Naval Research Laboratory for preparing the HMTD solution.
Funding for this project was provided by the Office of Naval Research
(ONR) through the Naval Research Laboratory's Basic Research Program.
NR 25
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Z9 6
U1 4
U2 39
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
EI 1520-6882
J9 ANAL CHEM
JI Anal. Chem.
PD DEC 16
PY 2014
VL 86
IS 24
BP 11977
EP 11980
DI 10.1021/ac503652x
PG 4
WC Chemistry, Analytical
SC Chemistry
GA AX1BR
UT WOS:000346683900011
PM 25419648
ER
PT J
AU Boyd, DA
Bezares, FJ
Pacardo, DB
Ukaegbu, M
Hosten, C
Ligler, FS
AF Boyd, Darryl A.
Bezares, Francisco J.
Pacardo, Dennis B.
Ukaegbu, Maraizu
Hosten, Charles
Ligler, Frances S.
TI Small-Molecule Detection in Thiol-Yne Nanocomposites via
Surface-Enhanced Raman Spectroscopy
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID GOLD NANOPARTICLES; BIOMARKER DETECTION; FACILE FABRICATION;
OPTICAL-PROPERTIES; ANTHRAX BIOMARKER; CLICK CHEMISTRY; SCATTERING;
SENSORS; DNA; PHOTOPOLYMERIZATIONS
AB Surface-enhanced Raman spectroscopy (SERS) is generally performed on planar surfaces, which can be difficult to prepare and may limit the interaction of the sensing surface with targets in large volume samples. We propose that nanocomposite materials can be configured that both include SERS probes and provide a high surface area-to-volume format, i.e., fibers. Thiol-yne nanocomposite films and fibers were fabricated using exposure to long-wave ultraviolet light after the inclusion of gold nanoparticles (AuNPs) functionalized with thiophenol. A SERS response was observed that was proportional to the aggregation of the AuNPs within the polymers and the amount of thiophenol present. Overall, this proof-of-concept fabrication of SERS active polymers indicated that thiol-yne nanocomposites may be useful as durable film or fiber SERS probes. Properties of the nanocomposites were evaluated using various techniques including UV-vis spectroscopy, mu-Raman spectroscopy, dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis, and transmission electron microscopy.
C1 [Boyd, Darryl A.] Naval Res Lab, Opt Sci Div, Washington, DC 20375 USA.
[Bezares, Francisco J.] ICFO, Castelldefels 08860, Barcelona, Spain.
[Pacardo, Dennis B.; Ligler, Frances S.] Univ N Carolina, Dept Biomed Engn, Raleigh, NC 27695 USA.
[Pacardo, Dennis B.; Ligler, Frances S.] N Carolina State Univ, Raleigh, NC 27695 USA.
[Ukaegbu, Maraizu; Hosten, Charles] Howard Univ, Dept Chem, Washington, DC 20059 USA.
RP Boyd, DA (reprint author), Naval Res Lab, Opt Sci Div, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM darryl.boyd@nrl.navy.mil
RI Boyd, Darryl/F-4269-2016
OI Boyd, Darryl/0000-0001-7327-2443
FU ONR/NRL Work Unit 9899; Jerome & Isabella Karle Fellowship; State of
North Carolina; National Science Foundation
FX The work was supported by ONR/NRL Work Unit 9899 and the Jerome &
Isabella Karle Fellowship. The views are those of the authors and do not
represent the opinion or policy of the US Navy or Department of Defense.
The authors acknowledge the use of experimental facilities in the Hosten
lab at Howard University. The authors also acknowledge the use of the
Analytical Instrumentation Facility (AIF) at the North Carolina State
University, which is supported by the State of North Carolina and the
National Science Foundation.
NR 63
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U1 5
U2 66
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
EI 1520-6882
J9 ANAL CHEM
JI Anal. Chem.
PD DEC 16
PY 2014
VL 86
IS 24
BP 12315
EP 12320
DI 10.1021/ac503607b
PG 6
WC Chemistry, Analytical
SC Chemistry
GA AX1BR
UT WOS:000346683900058
PM 25383912
ER
PT J
AU Smith, TC
Powell, TM
Jacobson, IG
Smith, B
Hooper, TI
Boyko, EJ
Gackstetter, GD
AF Smith, Tyler C.
Powell, Teresa M.
Jacobson, Isabel G.
Smith, Besa
Hooper, Tomoko I.
Boyko, Edward J.
Gackstetter, Gary D.
TI Chronic Multisymptom Illness: A Comparison of Iraq and Afghanistan
Deployers With Veterans of the 1991 Gulf War
SO AMERICAN JOURNAL OF EPIDEMIOLOGY
LA English
DT Article
DE Gulf War syndrome; illnesses in Gulf War Veterans; multisystem illness;
symptom self-reporting
ID POSTTRAUMATIC-STRESS-DISORDER; MILITARY SERVICE MEMBERS;
POPULATION-BASED SURVEY; SELF-REPORTED SYMPTOMS; MILLENNIUM COHORT;
COMBAT DEPLOYMENT; US MILITARY; HEALTH-STATUS; FOLLOW-UP;
HOSPITALIZATION DATA
AB Symptoms and illnesses reported by veterans of the 1991 GulfWar era are a cause of potential concern for those military members who have deployed to the Gulf region in support of more recent contingency operations in Iraq and Afghanistan. In the present study, we quantified self-reported symptoms from participants in the Millennium Cohort Study, a prospective study representing all US service branches, including both active duty and Reserve/National Guard components (2001-2008). Self-reported symptoms were uniquely compared with those in a cohort of subjects from the 1991 Gulf War to gain context for the present report. Symptoms were then aggregated to identify cases of chronic multisymptom illness (CMI) based on the case definition from the Centers for Disease Control and Prevention. The prevalence of self-reported CMI symptoms was compared with that collected in 1997-1999 from a study population of US Seabees from the 1991 Gulf War, as well as from deployed and nondeployed subgroups. Although overall symptom reporting was much less in the Millennium Cohort than in the 1991 Gulf War cohort, a higher prevalence of reported CMI was noted among deployed compared with nondeployed contemporary cohort members. An increased understanding of coping skills and resilience and development of well-designed screening instruments, along with appropriate clinical and psychological follow-up for returning veterans, might help to focus resources on early identification of potential long-term chronic disease manifestations.
C1 [Smith, Tyler C.] Natl Univ, Dept Community Hlth, San Diego, CA 92123 USA.
[Smith, Tyler C.] Natl Univ, Dept Def, Ctr Deployment Hlth Res, Naval Hlth Res Ctr, San Diego, CA 92123 USA.
[Powell, Teresa M.; Jacobson, Isabel G.; Smith, Besa] Naval Hlth Res Ctr, Dept Def Ctr Deployment Hlth Res, San Diego, CA USA.
[Smith, Besa] Univ Calif San Diego, Sch Med, Dept Family & Prevent Med, San Diego, CA 92103 USA.
[Hooper, Tomoko I.; Gackstetter, Gary D.] Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, Bethesda, MD 20814 USA.
[Boyko, Edward J.] Dept Vet Affairs Puget Sound Healthcare Syst, Seattle Epidemiol Res & Informat Ctr, Seattle, WA USA.
[Gackstetter, Gary D.] Analyt Serv Inc ANSER, Arlington, VA USA.
RP Smith, TC (reprint author), Natl Univ, Dept Community Hlth, Sch Hlth & Human Serv, 3678 Aero Court, San Diego, CA 92123 USA.
EM tsmith@nu.edu
FU US Department of Defense
FX This research was supported by the US Department of Defense and was
conducted in compliance with all applicable federal regulations
governing the protection of human subjects in research (protocol
NHRC.2000.0007). Additional support was provided by the Henry M. Jackson
Foundation for the advancement of Military Medicine, Rockville,
Maryland. VA Puget Sound Health Care System provided support for Dr.
Boyko's participation in this research.
NR 58
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U1 1
U2 11
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0002-9262
EI 1476-6256
J9 AM J EPIDEMIOL
JI Am. J. Epidemiol.
PD DEC 15
PY 2014
VL 180
IS 12
BP 1176
EP 1187
DI 10.1093/aje/kwu240
PG 12
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA AW6ZN
UT WOS:000346414300007
PM 25466246
ER
PT J
AU Zhang, XD
Boss, E
Gray, DJ
AF Zhang, Xiaodong
Boss, Emmanuel
Gray, Deric J.
TI Significance of scattering by oceanic particles at angles around 120
degree
SO OPTICS EXPRESS
LA English
DT Article
ID INHERENT OPTICAL-PROPERTIES; REFRACTIVE-INDEX; BACKWARD DIRECTION;
LIGHT-SCATTERING; COASTAL WATERS; BREAKING WAVES; PURE SEAWATER;
SEA-WATER; BACKSCATTERING; COEFFICIENT
AB Field observations and theoretical studies have shown that shapes of the volume scattering functions (VSFs) of oceanic particles in the backward directions, i.e., VSFs normalized by the total backscattering coefficient, exhibit a surprisingly low variability at angles near 120 degree, which is also confirmed by measurements of VSFs in coastal waters around the US. To investigate what this minimum variability angle (theta*) represents, we estimated mean values of the VSFs in the backward angles using four mean value theorems: mean value for integral, weighted mean value for integral, classic mean value for differentiation and Cauchy's mean value. We also estimated the angles corresponding to the minimum values of the VSFs. We found theta* to be very close to the angles representing the classic mean values for differentiation of the VSFs. The low variability is due to the fact that the classic mean values vary little with the composition and sizes of particles. (C) 2014 Optical Society of America
C1 [Zhang, Xiaodong] Univ N Dakota, Dept Earth Syst Sci & Policy, Grand Forks, ND 58202 USA.
[Boss, Emmanuel] Univ Maine, Sch Marine Sci, Orono, ME 04469 USA.
[Gray, Deric J.] US Navy, Res Lab Code 7231, Washington, DC 20375 USA.
RP Zhang, XD (reprint author), Univ N Dakota, Dept Earth Syst Sci & Policy, Grand Forks, ND 58202 USA.
EM zhang@aero.und.edu
RI Boss, Emmanuel/C-5765-2009
OI Boss, Emmanuel/0000-0002-8334-9595
FU National Aeronautics and Space Administration (NASA) [NNX13AB20A,
NNX13AN72G]; Office of Naval Research [00014-13-1-0146]
FX XZ acknowledges the funding support from National Aeronautics and Space
Administration (NASA) (NNX13AB20A, NNX13AN72G). EB acknowledges funding
support from the Office of Naval Research (00014-13-1-0146). We thank
two anonymous reviewers for their valuable comments.
NR 44
TC 4
Z9 4
U1 1
U2 4
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD DEC 15
PY 2014
VL 22
IS 25
BP 31329
EP 31336
DI 10.1364/OE.22.031329
PG 8
WC Optics
SC Optics
GA AW6GW
UT WOS:000346368800125
PM 25607081
ER
PT J
AU Nepal, N
Goswami, R
Qadri, SB
Mahadik, NA
Kub, FJ
Eddy, CR
AF Nepal, N.
Goswami, R.
Qadri, S. B.
Mahadik, N. A.
Kub, F. J.
Eddy, C. R., Jr.
TI Growth of MN/Pt heterostructures on amorphous substrates at low
temperatures via atomic layer epitaxy
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Atomic layer epitaxy; AlN/Pt heterostructures; Microelectromechanical
systems; Low temperature
ID THIN-FILMS; ALN; QUALITY; RESONATORS; BULK
AB Recent results on atomic layer epitaxy (ALE) growth and characterization of (0001)AlN on highly oriented (111)Pt layers on amorphous HfO2/Si(100) are reported. HfO2 was deposited by atomic layer deposition on Si(100) followed by ALE growth of Pt(15 nm) and, subsequently, AlN(60 nm) at 500 degrees C. Based on the X-ray diffraction and transmission electron microscopy measurements, the Pt and AlN layers are highly oriented along the (111) and (0002) directions, respectively. Demonstrations of AlN/Pt heterostructures open up the possibility of new state-of-the-art microelectromechanical systems devices. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Nepal, N.; Goswami, R.; Qadri, S. B.; Mahadik, N. A.; Kub, F. J.; Eddy, C. R., Jr.] US Naval Res Lab, Washington, DC 20375 USA.
RP Nepal, N (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM nnepalncsu@gmail.com
FU American Society for Engineering Education - U.S. Naval Research
Laboratory postdoctoral fellowship program; Office of Naval Research
(ONR)
FX N.N. would like to acknowledge the support of The American Society for
Engineering Education - U.S. Naval Research Laboratory postdoctoral
fellowship program. This work is supported by the Office of Naval
Research (ONR).
NR 13
TC 2
Z9 2
U1 2
U2 5
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD DEC 15
PY 2014
VL 93
BP 44
EP 47
DI 10.1016/j.scriptamat.2014.08.027
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA AU2XO
UT WOS:000345478100011
ER
PT J
AU Hota, SS
Chowdhury, P
Khoo, TL
Carpenter, MP
Janssens, RVF
Qiu, Y
Ahmad, I
Greene, JP
Tandel, SK
Seweryniak, D
Zhu, S
Bertone, PF
Chiara, CJ
Deo, AY
D'Olympia, N
Gros, S
Guess, CJ
Harrington, T
Hartley, DJ
Henning, G
Hoffman, CR
Jackson, EG
Kondev, FG
Lakshmi, S
Lauritsen, T
Lister, CJ
McCutchan, EA
Moran, K
Nair, C
Peterson, D
Shirwadkar, U
Stefanescu, I
AF Hota, S. S.
Chowdhury, P.
Khoo, T. L.
Carpenter, M. P.
Janssens, R. V. F.
Qiu, Y.
Ahmad, I.
Greene, J. P.
Tandel, S. K.
Seweryniak, D.
Zhu, S.
Bertone, P. F.
Chiara, C. J.
Deo, A. Y.
D'Olympia, N.
Gros, S.
Guess, C. J.
Harrington, T.
Hartley, D. J.
Henning, G.
Hoffman, C. R.
Jackson, E. G.
Kondev, F. G.
Lakshmi, S.
Lauritsen, T.
Lister, C. J.
McCutchan, E. A.
Moran, K.
Nair, C.
Peterson, D.
Shirwadkar, U.
Stefanescu, I.
TI N=151 Pu, Cm and Cf nuclei under rotational stress: Role of higher-order
deformations
SO PHYSICS LETTERS B
LA English
DT Article
DE Superheavy; Neutron-rich; Inelastic and transfer reactions; Rotational
alignments; Higher-order deformations
ID ISOTOPES; DECAY
AB Fast-rotating N = 151 isotones Pu-245, Cm-247 and Cf-249 have been studied through inelastic excitation and transfer reactions with radioactive targets. While all have a ground-state band built on a nu j(15/2)[734]9/2(-) Nilsson configuration, new excited bands have also been observed in each isotone. These odd-N excited bands allow a comparison of the alignment behavior for two different configurations, where the nu j(15/2) alignment is either blocked or allowed. The effect of higher order deformations is explored through cranking calculations, which help clarify the elusive nature of nu j(15/2) alignments. (C) 2014 The Authors. Published by Elsevier B.V.
C1 [Hota, S. S.; Chowdhury, P.; Qiu, Y.; Tandel, S. K.; Deo, A. Y.; D'Olympia, N.; Guess, C. J.; Harrington, T.; Jackson, E. G.; Lakshmi, S.; Lister, C. J.; Moran, K.; Shirwadkar, U.] Univ Massachusetts, Dept Phys, Lowell, MA 01854 USA.
[Khoo, T. L.; Carpenter, M. P.; Janssens, R. V. F.; Ahmad, I.; Greene, J. P.; Seweryniak, D.; Zhu, S.; Bertone, P. F.; Chiara, C. J.; Gros, S.; Henning, G.; Hoffman, C. R.; Kondev, F. G.; Lauritsen, T.; McCutchan, E. A.; Nair, C.; Peterson, D.; Stefanescu, I.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Chiara, C. J.; Stefanescu, I.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Hartley, D. J.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA.
RP Chowdhury, P (reprint author), Univ Massachusetts, Dept Phys, Lowell, MA 01854 USA.
EM sankha.hota@anu.edu.au; partha_chowdhury@uml.edu
RI Carpenter, Michael/E-4287-2015; Hoffman, Calem/H-4325-2016
OI Carpenter, Michael/0000-0002-3237-5734; Hoffman,
Calem/0000-0001-7141-9827
FU Office of Basic Energy Science, U.S. Department of Energy; U.S.
Department of Energy, Office of Science, Office of Nuclear Physics
[DE-FG02-94ER40848, DE-FG02-94ER40834, DE-AC02-06CH11357]; National
Science Foundation [PHY-1203100]
FX Fruitful discussions with S. Frauendorf are gratefully acknowledged. We
also acknowledge the trans-plutonium element production facilities at
Oak Ridge National Laboratory, supported by the Office of Basic Energy
Science, U.S. Department of Energy, for providing isotopes for the
targets. This material is based upon work supported by the U.S.
Department of Energy, Office of Science, Office of Nuclear Physics,
under award numbers DE-FG02-94ER40848 and DE-FG02-94ER40834, and
contract number DE-AC02-06CH11357, and the National Science Foundation
under Grant number PHY-1203100. This research used resources of ANL's
ATLAS facility, which is a DOE Office of Science user facility.
NR 36
TC 4
Z9 4
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD DEC 12
PY 2014
VL 739
BP 13
EP 18
DI 10.1016/j.physletb.2014.10.021
PG 6
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA AW0RW
UT WOS:000346002000003
ER
PT J
AU Adamczyk, L
Adkins, JK
Agakishiev, G
Aggarwal, MM
Ahammed, Z
Alekseev, I
Alford, J
Anson, CD
Aparin, A
Arkhipkin, D
Aschenauer, EC
Averichev, GS
Balewski, J
Banerjee, A
Barnovska, Z
Beavis, DR
Bellwied, R
Bhasin, A
Bhati, AK
Bhattarai, P
Bichsel, H
Bielcik, J
Bielcikova, J
Bland, LC
Bordyuzhin, G
Borowski, W
Bouchet, J
Brandin, AV
Brovko, SG
Bultmann, S
Bunzarov, I
Burton, TP
Butterworth, J
Caines, H
Sanchez, MCD
Cebra, D
Cendejas, R
Cervantes, MC
Chaloupka, P
Chang, Z
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, L
Cheng, J
Cherney, M
Chikanian, A
Christie, W
Chwastowski, J
Codrington, MJM
Corliss, R
Cramer, JG
Crawford, HJ
Cui, X
Das, S
Leyva, AD
De Silva, LC
Debbe, RR
Dedovich, TG
Deng, J
Derevschikov, AA
de Souza, RD
Dhamija, S
di Ruzza, B
Didenko, L
Dilks, C
Ding, F
Djawotho, P
Dong, X
Drachenberg, JL
Draper, JE
Du, CM
Dunkelberger, LE
Dunlop, JC
Efimov, LG
Engelage, J
Engle, KS
Eppley, G
Eun, L
Evdokimov, O
Fatemi, R
Fazio, S
Fedorisin, J
Filip, P
Finch, E
Fisyak, Y
Flores, CE
Gagliardi, CA
Gangadharan, DR
Garand, D
Geurts, F
Gibson, A
Girard, M
Gliske, S
Grosnick, D
Guo, Y
Gupta, A
Gupta, S
Guryn, W
Haag, B
Hajkova, O
Hamed, A
Han, LX
Haque, R
Harris, W
Hays-Wehle, JP
Heppelmann, S
Hirsch, A
Hoffmann, GW
Hofman, DJ
Horvat, S
Huang, B
Huang, HZ
Huang, X
Huck, P
Humanic, TJ
Igo, G
Jacobs, WW
Jang, H
Judd, EG
Kabana, S
Kalinkin, D
Kang, K
Kauder, K
Ke, HW
Keane, D
Kechechyan, A
Kesich, A
Khan, ZH
Kikola, DP
Kisel, I
Kisiel, A
Koetke, DD
Kollegger, T
Konzer, J
Koralt, I
Korsch, W
Kotchenda, L
Kravtsov, P
Krueger, K
Kulakov, I
Kumar, L
Kycia, RA
Lamont, MAC
Landgraf, JM
Landry, KD
Lauret, J
Lebedev, A
Lednicky, R
Lee, JH
Leight, W
LeVine, MJ
Li, C
Li, W
Li, X
Li, X
Li, Y
Li, ZM
Lima, LM
Lisa, MA
Liu, F
Ljubicic, T
Llope, WJ
Longacre, RS
Luo, X
Ma, GL
Ma, YG
Don, DMMDM
Mahapatra, DP
Majka, R
Margetis, S
Markert, C
Masui, H
Matis, HS
McDonald, D
McShane, TS
Minaev, NG
Mioduszewski, S
Mohanty, B
Mondal, MM
Morozov, DA
Munhoz, MG
Mustafa, MK
Nandi, BK
Nasim, M
Nayak, TK
Nelson, JM
Nogach, LV
Noh, SY
Novak, J
Nurushev, SB
Odyniec, G
Ogawa, A
Oh, K
Ohlson, A
Okorokov, V
Oldag, EW
Oliveira, RAN
Pachr, M
Page, BS
Pal, SK
Pan, YX
Pandit, Y
Panebratsev, Y
Pawlak, T
Pawlik, B
Pei, H
Perkins, C
Peryt, W
Pile, P
Planinic, M
Pluta, J
Plyku, D
Poljak, N
Porter, J
Poskanzer, AM
Pruthi, NK
Przybycien, M
Pujahari, PR
Qiu, H
Quintero, A
Ramachandran, S
Raniwala, R
Raniwala, S
Ray, RL
Riley, CK
Ritter, HG
Roberts, JB
Rogachevskiy, OV
Romero, JL
Ross, JF
Roy, A
Ruan, L
Rusnak, J
Sahoo, NR
Sahu, PK
Sakrejda, I
Salur, S
Sandacz, A
Sandweiss, J
Sangaline, E
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
Shen, WQ
Shi, SS
Shou, QY
Sichtermann, EP
Singaraju, RN
Skoby, MJ
Smirnov, D
Smirnov, N
Solanki, D
Sorensen, P
Desouza, UG
Spinka, HM
Srivastava, B
Stanislaus, TDS
Stevens, JR
Stock, R
Strikhanov, M
Stringfellow, B
Suaide, AAP
Sumbera, M
Sun, X
Sun, XM
Sun, Y
Sun, Z
Surrow, B
Svirida, DN
Symons, TJM
de Toledo, AS
Takahashi, J
Tang, AH
Tang, Z
Tarnowsky, T
Thomas, JH
Timmins, AR
Tlusty, D
Tokarev, M
Trentalange, S
Tribble, RE
Tribedy, P
Trzeciak, BA
Tsai, OD
Turnau, J
Ullrich, T
Underwood, DG
Van Buren, G
van Nieuwenhuizen, G
Vanfossen, JA
Varma, R
Vasconcelos, GMS
Vasiliev, AN
Vertesi, R
Videbaek, F
Viyogi, YP
Vokal, S
Vossen, A
Wada, M
Walker, M
Wang, F
Wang, G
Wang, H
Wang, JS
Wang, XL
Wang, Y
Wang, Y
Webb, G
Webb, JC
Westfall, GD
Wieman, H
Wissink, SW
Witt, R
Wu, YF
Xiao, Z
Xie, W
Xin, K
Xu, H
Xu, N
Xu, QH
Xu, Y
Xu, Z
Yan, W
Yang, C
Yang, Y
Yang, Y
Ye, Z
Yepes, P
Yi, L
Yip, K
Yoo, IK
Zawisza, Y
Zbroszczyk, H
Zha, W
Zhang, JB
Zhang, JL
Zhang, S
Zhang, XP
Zhang, Y
Zhang, ZP
Zhao, F
Zhao, J
Zhong, C
Zhu, X
Zhu, YH
Zoulkarneeva, Y
Zyzak, M
AF Adamczyk, L.
Adkins, J. K.
Agakishiev, G.
Aggarwal, M. M.
Ahammed, Z.
Alekseev, I.
Alford, J.
Anson, C. D.
Aparin, A.
Arkhipkin, D.
Aschenauer, E. C.
Averichev, G. S.
Balewski, J.
Banerjee, A.
Barnovska, Z.
Beavis, D. R.
Bellwied, R.
Bhasin, A.
Bhati, A. K.
Bhattarai, P.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Bland, L. C.
Bordyuzhin, G.
Borowski, W.
Bouchet, J.
Brandin, A. V.
Brovko, S. G.
Bueltmann, S.
Bunzarov, I.
Burton, T. P.
Butterworth, J.
Caines, H.
Sanchez, M. Calderon de la Barca
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chaloupka, P.
Chang, Z.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, L.
Cheng, J.
Cherney, M.
Chikanian, A.
Christie, W.
Chwastowski, J.
Codrington, M. J. M.
Corliss, R.
Cramer, J. G.
Crawford, H. J.
Cui, X.
Das, S.
Leyva, A. Davila
De Silva, L. C.
Debbe, R. R.
Dedovich, T. G.
Deng, J.
Derevschikov, A. A.
de Souza, R. Derradi
Dhamija, S.
di Ruzza, B.
Didenko, L.
Dilks, C.
Ding, F.
Djawotho, P.
Dong, X.
Drachenberg, J. L.
Draper, J. E.
Du, C. M.
Dunkelberger, L. E.
Dunlop, J. C.
Efimov, L. G.
Engelage, J.
Engle, K. S.
Eppley, G.
Eun, L.
Evdokimov, O.
Fatemi, R.
Fazio, S.
Fedorisin, J.
Filip, P.
Finch, E.
Fisyak, Y.
Flores, C. E.
Gagliardi, C. A.
Gangadharan, D. R.
Garand, D.
Geurts, F.
Gibson, A.
Girard, M.
Gliske, S.
Grosnick, D.
Guo, Y.
Gupta, A.
Gupta, S.
Guryn, W.
Haag, B.
Hajkova, O.
Hamed, A.
Han, L. -X.
Haque, R.
Harris, W.
Hays-Wehle, J. P.
Heppelmann, S.
Hirsch, A.
Hoffmann, G. W.
Hofman, D. J.
Horvat, S.
Huang, B.
Huang, H. Z.
Huang, X.
Huck, P.
Humanic, T. J.
Igo, G.
Jacobs, W. W.
Jang, H.
Judd, E. G.
Kabana, S.
Kalinkin, D.
Kang, K.
Kauder, K.
Ke, H. W.
Keane, D.
Kechechyan, A.
Kesich, A.
Khan, Z. H.
Kikola, D. P.
Kisel, I.
Kisiel, A.
Koetke, D. D.
Kollegger, T.
Konzer, J.
Koralt, I.
Korsch, W.
Kotchenda, L.
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.
Leight, W.
LeVine, M. J.
Li, C.
Li, W.
Li, X.
Li, X.
Li, Y.
Li, Z. M.
Lima, L. M.
Lisa, M. A.
Liu, F.
Ljubicic, T.
Llope, W. J.
Longacre, R. S.
Luo, X.
Ma, G. L.
Ma, Y. G.
Don, D. M. M. D. Madagodagettige
Mahapatra, D. P.
Majka, R.
Margetis, S.
Markert, C.
Masui, H.
Matis, H. S.
McDonald, D.
McShane, T. S.
Minaev, N. G.
Mioduszewski, S.
Mohanty, B.
Mondal, M. M.
Morozov, D. A.
Munhoz, M. G.
Mustafa, M. K.
Nandi, B. K.
Nasim, Md.
Nayak, T. K.
Nelson, J. M.
Nogach, L. V.
Noh, S. Y.
Novak, J.
Nurushev, S. B.
Odyniec, G.
Ogawa, A.
Oh, K.
Ohlson, A.
Okorokov, V.
Oldag, E. W.
Oliveira, R. A. N.
Pachr, M.
Page, B. S.
Pal, S. K.
Pan, Y. X.
Pandit, Y.
Panebratsev, Y.
Pawlak, T.
Pawlik, B.
Pei, H.
Perkins, C.
Peryt, W.
Pile, P.
Planinic, M.
Pluta, J.
Plyku, D.
Poljak, N.
Porter, J.
Poskanzer, A. M.
Pruthi, N. K.
Przybycien, M.
Pujahari, P. R.
Qiu, H.
Quintero, A.
Ramachandran, S.
Raniwala, R.
Raniwala, S.
Ray, R. L.
Riley, C. K.
Ritter, H. G.
Roberts, J. B.
Rogachevskiy, O. V.
Romero, J. L.
Ross, J. F.
Roy, A.
Ruan, L.
Rusnak, J.
Sahoo, N. R.
Sahu, P. K.
Sakrejda, I.
Salur, S.
Sandacz, A.
Sandweiss, J.
Sangaline, E.
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.
Shen, W. Q.
Shi, S. S.
Shou, Q. Y.
Sichtermann, E. P.
Singaraju, R. N.
Skoby, M. J.
Smirnov, D.
Smirnov, N.
Solanki, D.
Sorensen, P.
Desouza, U. G.
Spinka, H. M.
Srivastava, B.
Stanislaus, T. D. S.
Stevens, J. R.
Stock, R.
Strikhanov, M.
Stringfellow, B.
Suaide, A. A. P.
Sumbera, M.
Sun, X.
Sun, X. M.
Sun, Y.
Sun, Z.
Surrow, B.
Svirida, D. N.
Symons, T. J. M.
de Toledo, A. Szanto
Takahashi, J.
Tang, A. H.
Tang, Z.
Tarnowsky, T.
Thomas, J. H.
Timmins, A. R.
Tlusty, D.
Tokarev, M.
Trentalange, S.
Tribble, R. E.
Tribedy, P.
Trzeciak, B. A.
Tsai, O. D.
Turnau, J.
Ullrich, T.
Underwood, D. G.
Van Buren, G.
van Nieuwenhuizen, G.
Vanfossen, J. A., Jr.
Varma, R.
Vasconcelos, G. M. S.
Vasiliev, A. N.
Vertesi, R.
Videbaek, F.
Viyogi, Y. P.
Vokal, S.
Vossen, A.
Wada, M.
Walker, M.
Wang, F.
Wang, G.
Wang, H.
Wang, J. S.
Wang, X. L.
Wang, Y.
Wang, Y.
Webb, G.
Webb, J. C.
Westfall, G. D.
Wieman, H.
Wissink, S. W.
Witt, R.
Wu, Y. F.
Xiao, Z.
Xie, W.
Xin, K.
Xu, H.
Xu, N.
Xu, Q. H.
Xu, Y.
Xu, Z.
Yan, W.
Yang, C.
Yang, Y.
Yang, Y.
Ye, Z.
Yepes, P.
Yi, L.
Yip, K.
Yoo, I. -K.
Zawisza, Y.
Zbroszczyk, H.
Zha, W.
Zhang, J. B.
Zhang, J. L.
Zhang, S.
Zhang, X. P.
Zhang, Y.
Zhang, Z. P.
Zhao, F.
Zhao, J.
Zhong, C.
Zhu, X.
Zhu, Y. H.
Zoulkarneeva, Y.
Zyzak, M.
TI J/psi polarization in p plus p collisions at root s=200 GeV in STAR
SO PHYSICS LETTERS B
LA English
DT Article
DE Charmonia; Polarization; Spin alignment; STAR; RHIC
ID HADRONIC PRODUCTION; J-PSI; HEAVY QUARKONIUM; TEV; DISTRIBUTIONS;
UPSILON; PROMPT; GLUON
AB We report on a polarization measurement of inclusive J/psi mesons in the di-electron decay channel at mid-rapidity at 2 < p(T) < 6 GeV/c in p + p collisions at root s = 200 GeV. Data were taken with the STAR detector at RHIC. The J/psi polarization measurement should help to distinguish between different models of the J/psi production mechanism since they predict different p(T) dependences of the J/psi polarization. In this analysis, J/psi is studied in the helicity frame. The polarization parameter lambda(theta) measured at RHIC becomes smaller towards high p(T), indicating more longitudinal J/psi polarization as p(T) increases. The result is compared with predictions of presently available models. (C) 2014 The Authors. Published by Elsevier B.V.
C1 [Adamczyk, L.; Przybycien, M.] AGH Univ Sci & Technol, Krakow, Poland.
[Gliske, S.; Krueger, K.; Spinka, H. M.; Underwood, D. G.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Nelson, J. M.] Univ Birmingham, Birmingham, W Midlands, England.
[Arkhipkin, D.; Aschenauer, E. C.; Beavis, D. R.; Bland, L. C.; Burton, T. P.; Christie, W.; Debbe, R. R.; di Ruzza, B.; Didenko, L.; Dunlop, J. C.; Fazio, S.; Fisyak, Y.; Guryn, W.; Huang, B.; Ke, H. W.; Lamont, M. A. C.; Landgraf, J. M.; Lauret, J.; Lebedev, A.; Lee, J. H.; LeVine, M. J.; Ljubicic, T.; Longacre, R. S.; Ogawa, A.; Pile, P.; Ruan, L.; Schmidke, W. B.; Smirnov, D.; Sorensen, P.; Tang, A. H.; Ullrich, T.; Van Buren, G.; Videbaek, F.; Wang, H.; Webb, J. C.; 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.
[Brovko, S. G.; Sanchez, M. Calderon de la Barca; Cebra, D.; Ding, F.; Draper, J. E.; Flores, C. E.; Haag, B.; Kesich, A.; Romero, J. L.; Sangaline, E.] Univ Calif Davis, Davis, CA 95616 USA.
[Dunkelberger, L. E.; Huang, H. Z.; Igo, G.; Landry, K. D.; Pan, Y. X.; Shah, N.; Trentalange, S.; Tsai, O. D.; Wang, G.; Zhao, F.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[de Souza, R. Derradi; Takahashi, J.; Vasconcelos, G. M. S.] Univ Estadual Campinas, Sao Paulo, Brazil.
[Chen, L.; Huck, P.; Li, Z. M.; Liu, F.; Luo, X.; Pei, H.; Wu, Y. F.; Yang, Y.; Zhang, J. B.; Zhao, J.] Cent China Normal Univ HZNU, Wuhan 430079, Peoples R China.
[Evdokimov, O.; Hofman, D. J.; Kauder, K.; Khan, Z. H.; Pandit, Y.; Wang, Y.; Ye, Z.] Univ Illinois, Chicago, IL 60607 USA.
[Chwastowski, J.; Kycia, R. A.] Cracow Univ Technol, Krakow, Poland.
[Cherney, M.; Don, D. M. M. D. Madagodagettige; McShane, T. S.; Ross, J. F.; Seger, J.] Creighton Univ, Omaha, NE 68178 USA.
[Bielcik, J.; Chaloupka, P.; Hajkova, O.; Pachr, M.] Czech Tech Univ, FNSPE, Prague 11519, Czech Republic.
[Barnovska, Z.; Bielcikova, J.; Rusnak, J.; Sumbera, M.; Tlusty, D.; Vertesi, R.] Acad Sci Czech Republic, Inst Nucl Phys, CZ-25068 Rez, Czech Republic.
[Kisel, I.; Kollegger, T.; Kulakov, I.; Stock, R.; Zyzak, M.] FIAS, Frankfurt, Germany.
[Das, S.; Mahapatra, D. P.; Sahu, P. K.] Inst Phys, Bhubaneswar 751005, Orissa, India.
[Nandi, B. K.; Pujahari, P. R.; Sarkar, A.; Varma, R.] Indian Inst Technol, Bombay 400076, Maharashtra, India.
[Dhamija, S.; Jacobs, W. W.; Page, B. S.; Skoby, M. J.; Vossen, A.; Wissink, S. W.] Indiana Univ, Bloomington, IN 47408 USA.
[Alekseev, I.; Bordyuzhin, G.; Kalinkin, D.; Svirida, D. N.] Alikhanov Inst Theoret & Expt Phys, Moscow, Russia.
[Bhasin, A.; Gupta, A.; Gupta, S.] 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 Nucl Res Inst, Dubna 141980, Russia.
[Alford, J.; Bouchet, J.; Keane, D.; Margetis, S.; Quintero, A.; Shanmuganathan, P. V.; Vanfossen, J. A., Jr.] Kent State Univ, Kent, OH 44242 USA.
[Adkins, J. K.; Fatemi, R.; Korsch, W.; Ramachandran, S.; Webb, G.] Univ Kentucky, Lexington, KY 40506 USA.
[Jang, H.; Noh, S. Y.] Korea Inst Sci & Technol Informat, Taejon, South Korea.
[Du, C. M.; Sun, Z.; Wang, J. S.; Xu, H.; Yang, Y.] Inst Modern Phys, Lanzhou, Peoples R China.
[Dong, X.; Eun, L.; Masui, H.; Matis, H. S.; Mustafa, M. K.; Odyniec, G.; Porter, J.; Poskanzer, A. M.; Qiu, H.; Ritter, H. G.; Sakrejda, I.; Salur, S.; Schmah, A. M.; Shi, S. S.; Sichtermann, E. P.; Sun, X.; Sun, X. M.; Symons, T. J. M.; Thomas, J. H.; Wieman, H.; Xu, N.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Balewski, J.; Corliss, R.; Hays-Wehle, J. P.; Leight, W.; Stevens, J. R.; van Nieuwenhuizen, G.; Walker, M.] MIT, Cambridge, MA 02139 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.; Kotchenda, L.; Kravtsov, P.; Okorokov, V.; Strikhanov, M.] Moscow Engn Phys Inst, Moscow 115409, Russia.
[Haque, R.; Kumar, L.; Mohanty, B.] Natl Inst Sci Educ & Res, Bhubaneswar 751005, Orissa, India.
[Anson, C. D.; Gangadharan, D. R.; Humanic, T. J.; Lisa, M. A.] Ohio State Univ, Columbus, OH 43210 USA.
[Bueltmann, S.; Koralt, I.; Plyku, D.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Pawlik, B.; Turnau, J.] Inst Nucl Phys PAN, Krakow, Poland.
[Aggarwal, M. M.; Bhati, A. K.; Pruthi, N. K.; Sharma, B.] Panjab Univ, Chandigarh 160014, India.
[Cendejas, R.; Dilks, C.; Heppelmann, S.] 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, Russia.
[Garand, D.; Hirsch, A.; Konzer, J.; Li, X.; Scharenberg, R. P.; Srivastava, B.; Stringfellow, B.; Wang, F.; Xie, W.; Yi, L.] Purdue Univ, W Lafayette, IN 47907 USA.
[Oh, K.; Yoo, I. -K.] Pusan Natl Univ, Pusan 609735, South Korea.
[Raniwala, R.; Raniwala, S.; Solanki, D.] Univ Rajasthan, Jaipur 302004, Rajasthan, India.
[Butterworth, J.; Eppley, G.; Geurts, F.; Llope, W. J.; McDonald, D.; Roberts, J. B.; Xin, K.; Yepes, P.] Rice Univ, Houston, TX 77251 USA.
[Lima, L. M.; Munhoz, M. G.; Oliveira, R. A. N.; Desouza, U. G.; Suaide, A. A. P.; de Toledo, A. Szanto] Univ Sao Paulo, Sao Paulo, Brazil.
[Chen, H. F.; Cui, X.; Guo, Y.; Li, C.; Shao, M.; Sun, Y.; Tang, Z.; Wang, X. L.; Xu, Y.; Yang, C.; Zawisza, Y.; Zha, W.; Zhang, Y.; Zhang, Z. P.] Univ Sci & Technol China, Anhua 230026, Peoples R China.
[Deng, J.; Xu, Q. H.; Zhang, J. L.] Shandong Univ, Jinan 250100, Shandong, Peoples R China.
[Chen, J. H.; Han, L. -X.; Li, W.; Ma, G. L.; Ma, Y. G.; Shen, W. Q.; Shou, Q. Y.; Zhang, S.; Zhong, C.; Zhu, Y. H.] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Borowski, W.; Kabana, S.] SUBATECH, Nantes, France.
[Li, X.; Surrow, B.] Temple Univ, Philadelphia, PA 19122 USA.
[Cervantes, M. C.; Chang, Z.; Djawotho, P.; Gagliardi, C. A.; Hamed, A.; Mioduszewski, S.; Mondal, M. M.; Tribble, R. E.] Texas A&M Univ, College Stn, TX 77843 USA.
[Bhattarai, P.; Codrington, M. J. M.; Leyva, A. Davila; Hoffmann, G. W.; Markert, C.; Oldag, E. W.; Ray, R. L.; Schambach, J.; Wada, M.] Univ Texas Austin, Austin, TX 78712 USA.
[Bellwied, R.; De Silva, L. C.; Timmins, A. R.] Univ Houston, Houston, TX 77204 USA.
[Cheng, J.; Huang, X.; Kang, K.; Li, Y.; Wang, Y.; Xiao, Z.; Yan, W.; Zhang, X. P.; Zhu, X.] Tsinghua Univ, Beijing 100084, Peoples R China.
[Engle, K. S.; 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.; Pal, S. K.; Roy, A.; Sahoo, N. R.; Singaraju, R. N.; Tribedy, P.; Viyogi, Y. P.] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India.
[Girard, M.; Kikola, D. P.; Kisiel, A.; Pawlak, T.; Peryt, W.; Pluta, J.; Sandacz, A.; Trzeciak, B. A.; Zbroszczyk, H.] Warsaw Univ Technol, Warsaw, Poland.
[Bichsel, H.; Cramer, J. G.] Univ Washington, Seattle, WA 98195 USA.
[Caines, H.; Chikanian, A.; Finch, E.; Harris, W.; Horvat, S.; Majka, R.; Ohlson, A.; Riley, C. K.; Sandweiss, J.; Smirnov, N.] Yale Univ, New Haven, CT 06520 USA.
[Planinic, M.; Poljak, N.] Univ Zagreb, HR-10002 Zagreb, Croatia.
RP Trzeciak, BA (reprint author), Warsaw Univ Technol, Warsaw, Poland.
EM barbara.trzeciak@gmail.com
RI Aparecido Negrao de Oliveira, Renato/G-9133-2015; Kycia,
Radoslaw/J-4397-2015; Chaloupka, Petr/E-5965-2012; Suaide,
Alexandre/L-6239-2016; Takahashi, Jun/B-2946-2012; Rusnak,
Jan/G-8462-2014; Bielcikova, Jana/G-9342-2014; Sumbera,
Michal/O-7497-2014; XIAO, Zhigang/C-3788-2015; Fazio, Salvatore
/G-5156-2010; Xin, Kefeng/O-9195-2016; Yi, Li/Q-1705-2016; Kumar,
Lokesh/A-6154-2010; Alekseev, Igor/J-8070-2014; Svirida,
Dmitry/R-4909-2016; Inst. of Physics, Gleb Wataghin/A-9780-2017; Ma,
Yu-Gang/M-8122-2013; Derradi de Souza, Rafael/M-4791-2013
OI Kycia, Radoslaw/0000-0002-6390-4627; Suaide,
Alexandre/0000-0003-2847-6556; Takahashi, Jun/0000-0002-4091-1779;
Sumbera, Michal/0000-0002-0639-7323; Xin, Kefeng/0000-0003-4853-9219;
Yi, Li/0000-0002-7512-2657; Kumar, Lokesh/0000-0002-2746-9840; Alekseev,
Igor/0000-0003-3358-9635; Ma, Yu-Gang/0000-0002-0233-9900; Derradi de
Souza, Rafael/0000-0002-2084-7001
FU Offices of NP; HEP within the U.S. DOE Office of Science; U.S. NSF;
CNRS/IN2P3; FAPESP CNPq of Brazil; Ministry of Ed. and Sci. of the
Russian Federation; NNSFC; CAS; MoST; MoE of China; Korean Research
Foundation, GA; MSMT of the Czech Republic; FIAS of Germany; DAE; DST;
CSIR of India; National Science Centre of Poland; National Research
Foundation [NRF-2012004024]; Ministry of Sci., Ed. and Sports of the
Rep. of Croatia; RosAtom of Russia
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
Offices of NP and HEP within the U.S. DOE Office of Science, the U.S.
NSF, CNRS/IN2P3, FAPESP CNPq of Brazil, Ministry of Ed. and Sci. of the
Russian Federation, NNSFC, CAS, MoST and MoE of China, the Korean
Research Foundation, GA and MSMT of the Czech Republic, FIAS of Germany,
DAE, DST, and CSIR of India, National Science Centre of Poland, National
Research Foundation (NRF-2012004024), Ministry of Sci., Ed. and Sports
of the Rep. of Croatia, and RosAtom of Russia.
NR 43
TC 4
Z9 4
U1 1
U2 32
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD DEC 12
PY 2014
VL 739
BP 180
EP 188
DI 10.1016/j.physletb.2014.10.049
PG 9
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA AW0RW
UT WOS:000346002000029
ER
PT J
AU Oran, ES
Gamezo, VN
Zipf, RK
AF Oran, E. S.
Gamezo, V. N.
Zipf, R. K., Jr.
TI LARGE-SCALE EXPERIMENTS AND ABSOLUTE DETONABILITY OF METHANE/AIR
MIXTURES
SO COMBUSTION SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Absolute detonability; Detonation cell size; Explosion limits;
Methane-air explosions; Methane detonability
ID TO-DETONATION TRANSITION; GAS-AIR MIXTURES
AB The Gas Explosions Research Facility at Lake Lynn Experimental Mines was used to determine the detonability limit of methane for a 1-meter diameter tube as a function of the percent of methane in air. The measurements showed detonation limits of 5.3% (lean) and 15.6% (rich). A method for extrapolating these limits to larger systems, more relevant to coal mine tunnels, was proposed based on a simple scaling law and some empirical information on the number of cells required for a detonation to propagate in closed, open, and partially open geometries. The scaling law reproduces the measured detonation-cell sizes measured in the 1-m tube. Applying this to a tunnel the size of a coal mine produces a detonability limit less than the currently measured flammability limit for methane/air at atmospheric conditions, which raises interesting questions for detonation and combustion theory and suggests measurements in larger tubes.
C1 [Oran, E. S.] Univ Maryland, Dept Aerosp Engn, College Pk, MD 20742 USA.
[Gamezo, V. N.] Naval Res Lab, Computat Phys & Fluid Dynam Lab, Washington, DC 20375 USA.
[Zipf, R. K., Jr.] NIOSH, Off Mine Safety & Hlth Res, Pittsburgh, PA USA.
RP Oran, ES (reprint author), Naval Res Lab, Computat Phys & Fluid Dynam Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM elaine.oran@gmail.com
FU Office of Mine Safety and Health Research of the National Institute for
Occupational Safety and Health; Office of Naval Research through the
U.S. Naval Research Laboratory; University of Maryland through Minta
Martin Endowment Funds in the Department of Aerospace Engineering;
University of Maryland through Glenn L. Martin Institute Chaired
Professorship at the A. James Clark School of Engineering
FX The bulk of the research on which this paper is based was sponsored by
the Office of Mine Safety and Health Research of the National Institute
for Occupational Safety and Health and the Office of Naval Research
through the U.S. Naval Research Laboratory. Preparation of this paper
was supported by the University of Maryland through Minta Martin
Endowment Funds in the Department of Aerospace Engineering, and through
the Glenn L. Martin Institute Chaired Professorship at the A. James
Clark School of Engineering.
NR 25
TC 3
Z9 3
U1 0
U2 150
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0010-2202
EI 1563-521X
J9 COMBUST SCI TECHNOL
JI Combust. Sci. Technol.
PD DEC 10
PY 2014
VL 187
IS 1-2
SI SI
BP 324
EP 341
DI 10.1080/00102202.2014.976308
PG 18
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical
SC Thermodynamics; Energy & Fuels; Engineering
GA AW4PP
UT WOS:000346263500015
ER
PT J
AU Sheeley, NR
Wang, YM
AF Sheeley, N. R., Jr.
Wang, Y. -M.
TI CORONAL INFLOWS DURING THE INTERVAL 1996-2014
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: corona; Sun: coronal mass ejections (CMEs); Sun: magnetic fields;
sunspots
ID NONAXISYMMETRIC OPEN FLUX; X-RAY EVENTS; MASS EJECTIONS; MAGNETIC-FIELD;
RIGID ROTATION; SOLAR CORONA; HOLES; FLARE; RECONNECTION; EVOLUTION
AB We extend our previous counts of coronal inflows from the 5 yr interval 1996-2001 to the 18 yr interval 1996-2014. By comparing stackplots of these counts with similar stackplots of the source-surface magnetic field and its longitudinal gradient, we find that the inflows occur in long-lived streams with counting rates in excess of 18 inflows per day at sector boundaries where the gradient exceeds 0.22 G rad(-1). These streams are responsible for the high (86%) correlation between the inflow rate and the longitudinal field gradient. The overall inflow rate was several times larger in sunspot cycle 23 than it has been so far in cycle 24, reflecting the relatively weak source-surface fields during this cycle. By comparison, in cycles 21-22, the source-surface field and its gradient had bursts of great strength, as if large numbers of inflows occurred during those cycles. We find no obvious relation between inflows and coronal mass ejections (CMEs) on timescales of days to weeks, regardless of the speeds of the CMEs, and only a 60% correlation on timescales of months, provided the CMEs are fast (V > 600 km s(-1)). We conclude that most of the flux carried out by CMEs is returned to the Sun via field line reconnection well below the 2.0 R-circle dot inner limit of the LASCO field of view, and that the remainder accumulates in the outer corona for an eventual return at sector boundaries.
C1 [Sheeley, N. R., Jr.; Wang, Y. -M.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Sheeley, NR (reprint author), Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
FU NASA; Office of Naval Research
FX We are grateful to the NSO, WSO, and MDI/HMI science teams for providing
magnetic field measurements. We thank Nathan Rich (NRL) for continuing
to provide high-quality LASCO C2 observations and for his help with
software problems. We are grateful to him, and to Harry Warren (NRL),
Ignacio Ugarte-Urra (GMU), and Guillermo Stenborg (GMU) for programming
help. We are pleased to acknowledge Angelos Vourlidas (NRL) for
providing useful references on CMEs. Financial support was provided by
NASA and the Office of Naval Research.
NR 45
TC 3
Z9 3
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 DEC 10
PY 2014
VL 797
IS 1
AR 10
DI 10.1088/0004-637X/797/1/10
PG 14
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AU9LT
UT WOS:000345915000010
ER
PT J
AU Adamczyk, L
Adkins, JK
Agakishiev, G
Aggarwal, MM
Ahammed, Z
Alekseev, I
Alford, J
Anson, CD
Aparin, A
Arkhipkin, D
Aschenauer, EC
Averichev, GS
Banerjee, A
Beavis, DR
Bellwied, R
Bhasin, A
Bhati, AK
Bhattarai, P
Bichsel, H
Bielcik, J
Bielcikova, J
Bland, LC
Bordyuzhin, IG
Borowski, W
Bouchet, J
Brandin, AV
Brovko, SG
Bultmann, S
Bunzarov, I
Burton, TP
Butterworth, J
Caines, H
Sanchez, MCD
Cebra, D
Cendejas, R
Cervantes, MC
Chaloupka, P
Chang, Z
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, L
Cheng, J
Cherney, M
Chikanian, A
Christie, W
Chwastowski, J
Codrington, MJM
Contin, G
Cramer, JG
Crawford, HJ
Cui, X
Das, S
Leyva, AD
De Silva, LC
Debbe, RR
Dedovich, TG
Deng, J
Derevschikov, AA
de Souza, RD
Dhamija, S
di Ruzza, B
Didenko, L
Dilks, C
Ding, F
Djawotho, P
Dong, X
Drachenberg, JL
Draper, JE
Du, CM
Dunkelberger, LE
Dunlop, JC
Efimov, LG
Engelage, J
Engle, KS
Eppley, G
Eun, L
Evdokimov, O
Eyser, O
Fatemi, R
Fazio, S
Fedorisin, J
Filip, P
Finch, E
Fisyak, Y
Flores, CE
Gagliardi, CA
Gangadharan, DR
Garand, D
Geurts, F
Gibson, A
Girard, M
Gliske, S
Greiner, L
Grosnick, D
Gunarathne, DS
Guo, Y
Gupta, A
Gupta, S
Guryn, W
Haag, B
Hamed, A
Han, LX
Haque, R
Harris, JW
Heppelmann, S
Hirsch, A
Hoffmann, GW
Hofman, DJ
Horvat, S
Huang, B
Huang, HZ
Huang, X
Huck, P
Humanic, TJ
Igo, G
Jacobs, WW
Jang, H
Judd, EG
Kabana, S
Kalinkin, D
Kang, K
Kauder, K
Ke, HW
Keane, D
Kechechyan, A
Kesich, A
Khan, ZH
Kikola, DP
Kisel, I
Kisiel, A
Koetke, DD
Kollegger, T
Konzer, J
Koralt, I
Kotchenda, L
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
LeVine, MJ
Li, C
Li, W
Li, X
Li, X
Li, Y
Li, ZM
Lisa, MA
Liu, F
Ljubicic, T
Llope, WJ
Lomnitz, M
Longacre, RS
Luo, X
Ma, GL
Ma, YG
Don, DMMDM
Mahapatra, DP
Majka, R
Margetis, S
Markert, C
Masui, H
Matis, HS
McDonald, D
McShane, TS
Minaev, NG
Mioduszewski, S
Mohanty, B
Mondal, MM
Morozov, DA
Mustafa, MK
Nandi, BK
Nasim, M
Nayak, TK
Nelson, JM
Nigmatkulov, G
Nogach, LV
Noh, SY
Novak, J
Nurushev, SB
Odyniec, G
Ogawa, A
Oh, K
Ohlson, A
Okorokov, V
Oldag, EW
Olvitt, DL
Pachr, M
Page, BS
Pal, SK
Pan, YX
Pandit, Y
Panebratsev, Y
Pawlak, T
Pawlik, B
Pei, H
Perkins, C
Peryt, W
Pile, P
Planinic, M
Pluta, J
Poljak, N
Porter, J
Poskanzer, AM
Pruthi, NK
Przybycien, M
Pujahari, PR
Putschke, J
Qiu, H
Quintero, A
Ramachandran, S
Raniwala, R
Raniwala, S
Ray, RL
Riley, CK
Ritter, HG
Roberts, JB
Rogachevskiy, OV
Romero, JL
Ross, JF
Roy, A
Ruan, L
Rusnak, J
Rusnakova, O
Sahoo, NR
Sahu, PK
Sakrejda, I
Salur, S
Sandweiss, J
Sangaline, E
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
Shen, WQ
Shi, SS
Shou, QY
Sichtermann, EP
Singaraju, RN
Skoby, MJ
Smirnov, D
Smirnov, N
Solanki, D
Sorensen, P
Spinka, HM
Srivastava, B
Stanislaus, TDS
Stevens, JR
Stock, R
Strikhanov, M
Stringfellow, B
Sumbera, M
Sun, X
Sun, XM
Sun, Y
Sun, Z
Surrow, B
Svirida, DN
Symons, TJM
Szelezniak, MA
Takahashi, J
Tang, AH
Tang, Z
Tarnowsky, T
Thomas, JH
Timmins, AR
Tlusty, D
Tokarev, M
Trentalange, S
Tribble, RE
Tribedy, P
Trzeciak, BA
Tsai, OD
Turnau, J
Ullrich, T
Underwood, DG
Van Buren, G
van Nieuwenhuizen, G
Vandenbroucke, M
Vanfossen, JA
Varma, R
Vasconcelos, GMS
Vasiliev, AN
Vertesi, R
Videbaek, F
Viyogi, YP
Vokal, S
Vossen, A
Wada, M
Wang, F
Wang, G
Wang, H
Wang, JS
Wang, XL
Wang, Y
Wang, Y
Webb, G
Webb, JC
Westfall, GD
Wieman, H
Wissink, SW
Witt, R
Wu, YF
Xiao, Z
Xie, W
Xin, K
Xu, H
Xu, J
Xu, N
Xu, QH
Xu, Y
Xu, Z
Yan, W
Yang, C
Yang, Y
Yang, Y
Ye, Z
Yepes, P
Yi, L
Yip, K
Yoo, IK
Yu, N
Zawisza, Y
Zbroszczyk, H
Zha, W
Zhang, JB
Zhang, JL
Zhang, S
Zhang, XP
Zhang, Y
Zhang, ZP
Zhao, F
Zhao, J
Zhong, C
Zhu, X
Zhu, YH
Zoulkarneeva, Y
Zyzak, M
AF Adamczyk, L.
Adkins, J. K.
Agakishiev, G.
Aggarwal, M. M.
Ahammed, Z.
Alekseev, I.
Alford, J.
Anson, C. D.
Aparin, A.
Arkhipkin, D.
Aschenauer, E. C.
Averichev, G. S.
Banerjee, A.
Beavis, D. R.
Bellwied, R.
Bhasin, A.
Bhati, A. K.
Bhattarai, P.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Bland, L. C.
Bordyuzhin, I. G.
Borowski, W.
Bouchet, J.
Brandin, A. V.
Brovko, S. G.
Bueltmann, S.
Bunzarov, I.
Burton, T. P.
Butterworth, J.
Caines, H.
Sanchez, M. Calderon de la Barca
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chaloupka, P.
Chang, Z.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, L.
Cheng, J.
Cherney, M.
Chikanian, A.
Christie, W.
Chwastowski, J.
Codrington, M. J. M.
Contin, G.
Cramer, J. G.
Crawford, H. J.
Cui, X.
Das, S.
Leyva, A. Davila
De Silva, L. C.
Debbe, R. R.
Dedovich, T. G.
Deng, J.
Derevschikov, A. A.
Derradi de Souza, R.
Dhamija, S.
di Ruzza, B.
Didenko, L.
Dilks, C.
Ding, F.
Djawotho, P.
Dong, X.
Drachenberg, J. L.
Draper, J. E.
Du, C. M.
Dunkelberger, L. E.
Dunlop, J. C.
Efimov, L. G.
Engelage, J.
Engle, K. S.
Eppley, G.
Eun, L.
Evdokimov, O.
Eyser, O.
Fatemi, R.
Fazio, S.
Fedorisin, J.
Filip, P.
Finch, E.
Fisyak, Y.
Flores, C. E.
Gagliardi, C. A.
Gangadharan, D. R.
Garand, D.
Geurts, F.
Gibson, A.
Girard, M.
Gliske, S.
Greiner, L.
Grosnick, D.
Gunarathne, D. S.
Guo, Y.
Gupta, A.
Gupta, S.
Guryn, W.
Haag, B.
Hamed, A.
Han, L-X.
Haque, R.
Harris, J. W.
Heppelmann, S.
Hirsch, A.
Hoffmann, G. W.
Hofman, D. J.
Horvat, S.
Huang, B.
Huang, H. Z.
Huang, X.
Huck, P.
Humanic, T. J.
Igo, G.
Jacobs, W. W.
Jang, H.
Judd, E. G.
Kabana, S.
Kalinkin, D.
Kang, K.
Kauder, K.
Ke, H. W.
Keane, D.
Kechechyan, A.
Kesich, A.
Khan, Z. H.
Kikola, D. P.
Kisel, I.
Kisiel, A.
Koetke, D. D.
Kollegger, T.
Konzer, J.
Koralt, I.
Kotchenda, L.
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.
LeVine, M. J.
Li, C.
Li, W.
Li, X.
Li, X.
Li, Y.
Li, Z. M.
Lisa, M. A.
Liu, F.
Ljubicic, T.
Llope, W. J.
Lomnitz, M.
Longacre, R. S.
Luo, X.
Ma, G. L.
Ma, Y. G.
Don, D. M. M. D. Madagodagettige
Mahapatra, D. P.
Majka, R.
Margetis, S.
Markert, C.
Masui, H.
Matis, H. S.
McDonald, D.
McShane, T. S.
Minaev, N. G.
Mioduszewski, S.
Mohanty, B.
Mondal, M. M.
Morozov, D. A.
Mustafa, M. K.
Nandi, B. K.
Nasim, Md.
Nayak, T. K.
Nelson, J. M.
Nigmatkulov, G.
Nogach, L. V.
Noh, S. Y.
Novak, J.
Nurushev, S. B.
Odyniec, G.
Ogawa, A.
Oh, K.
Ohlson, A.
Okorokov, V.
Oldag, E. W.
Olvitt, D. L., Jr.
Pachr, M.
Page, B. S.
Pal, S. K.
Pan, Y. X.
Pandit, Y.
Panebratsev, Y.
Pawlak, T.
Pawlik, B.
Pei, H.
Perkins, C.
Peryt, W.
Pile, P.
Planinic, M.
Pluta, J.
Poljak, N.
Porter, J.
Poskanzer, A. M.
Pruthi, N. K.
Przybycien, M.
Pujahari, P. R.
Putschke, J.
Qiu, H.
Quintero, A.
Ramachandran, S.
Raniwala, R.
Raniwala, S.
Ray, R. L.
Riley, C. K.
Ritter, H. G.
Roberts, J. B.
Rogachevskiy, O. V.
Romero, J. L.
Ross, J. F.
Roy, A.
Ruan, L.
Rusnak, J.
Rusnakova, O.
Sahoo, N. R.
Sahu, P. K.
Sakrejda, I.
Salur, S.
Sandweiss, J.
Sangaline, E.
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.
Shen, W. Q.
Shi, S. S.
Shou, Q. Y.
Sichtermann, E. P.
Singaraju, R. N.
Skoby, M. J.
Smirnov, D.
Smirnov, N.
Solanki, D.
Sorensen, P.
Spinka, H. M.
Srivastava, B.
Stanislaus, T. D. S.
Stevens, J. R.
Stock, R.
Strikhanov, M.
Stringfellow, B.
Sumbera, M.
Sun, X.
Sun, X. M.
Sun, Y.
Sun, Z.
Surrow, B.
Svirida, D. N.
Symons, T. J. M.
Szelezniak, M. A.
Takahashi, J.
Tang, A. H.
Tang, Z.
Tarnowsky, T.
Thomas, J. H.
Timmins, A. R.
Tlusty, D.
Tokarev, M.
Trentalange, S.
Tribble, R. E.
Tribedy, P.
Trzeciak, B. A.
Tsai, O. D.
Turnau, J.
Ullrich, T.
Underwood, D. G.
Van Buren, G.
van Nieuwenhuizen, G.
Vandenbroucke, M.
Vanfossen, J. A., Jr.
Varma, R.
Vasconcelos, G. M. S.
Vasiliev, A. N.
Vertesi, R.
Videbaek, F.
Viyogi, Y. P.
Vokal, S.
Vossen, A.
Wada, M.
Wang, F.
Wang, G.
Wang, H.
Wang, J. S.
Wang, X. L.
Wang, Y.
Wang, Y.
Webb, G.
Webb, J. C.
Westfall, G. D.
Wieman, H.
Wissink, S. W.
Witt, R.
Wu, Y. F.
Xiao, Z.
Xie, W.
Xin, K.
Xu, H.
Xu, J.
Xu, N.
Xu, Q. H.
Xu, Y.
Xu, Z.
Yan, W.
Yang, C.
Yang, Y.
Yang, Y.
Ye, Z.
Yepes, P.
Yi, L.
Yip, K.
Yoo, I-K.
Yu, N.
Zawisza, Y.
Zbroszczyk, H.
Zha, W.
Zhang, J. B.
Zhang, J. L.
Zhang, S.
Zhang, X. P.
Zhang, Y.
Zhang, Z. P.
Zhao, F.
Zhao, J.
Zhong, C.
Zhu, X.
Zhu, Y. H.
Zoulkarneeva, Y.
Zyzak, M.
CA STAR Collaboration
TI Dielectron azimuthal anisotropy at mid-rapidity in Au plus Au collisions
at root s(NN)=200 GeV
SO PHYSICAL REVIEW C
LA English
DT Article
ID RESISTIVE PLATE CHAMBERS; QUARK-GLUON PLASMA; PARTICLE IDENTIFICATION;
STAR EXPERIMENT; P COLLISIONS; COLLABORATION; PERSPECTIVE; SYSTEM; TRAY;
TPC
AB We report on the first measurement of the azimuthal anisotropy (v(2)) of dielectrons (e(+)e(-) pairs) at mid-rapidity fromv root s(NN) = 200 GeV Au + Au collisions with the STAR detector at the Relativistic Heavy Ion Collider (RHIC), presented as a function of transverse momentum (pT) for different invariant-mass regions. In the mass region M-ee < 1.1 GeV/c(2) the dielectron v(2) measurements are found to be consistent with expectations from pi(0), eta, omega, and phi decay contributions. In the mass region 1.1 < M-ee < 2.9 GeV/c(2), the measured dielectron v(2) is consistent, within experimental uncertainties, with that from the c<(c)over bar> contributions.
C1 [Adamczyk, L.; Przybycien, M.] AGH Univ Sci & Technol, Krakow, Poland.
[Gliske, S.; Krueger, K.; Spinka, H. M.; Underwood, D. G.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Nelson, J. M.] Univ Birmingham, Birmingham, W Midlands, England.
[Arkhipkin, D.; Aschenauer, E. C.; Beavis, D. R.; Bland, L. C.; Burton, T. P.; Christie, W.; Debbe, R. R.; di Ruzza, B.; Didenko, L.; Dunlop, J. C.; Eyser, O.; Fazio, S.; Fisyak, Y.; Guryn, W.; Huang, B.; Ke, H. W.; Lamont, M. A. C.; Landgraf, J. M.; Lauret, J.; Lebedev, A.; Lee, J. H.; LeVine, M. J.; Ljubicic, T.; Longacre, R. S.; Ogawa, A.; Pile, P.; Ruan, L.; Schmidke, W. B.; Smirnov, D.; Sorensen, P.; Tang, A. H.; Ullrich, T.; Van Buren, G.; Videbaek, F.; Wang, H.; Webb, J. C.; 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.
[Brovko, S. G.; Sanchez, M. Calderon de la Barca; Cebra, D.; Ding, F.; Draper, J. E.; Flores, C. E.; Haag, B.; Kesich, A.; Romero, J. L.; Sangaline, E.] Univ Calif Davis, Davis, CA 95616 USA.
[Dunkelberger, L. E.; Huang, H. Z.; Igo, G.; Landry, K. D.; Pan, Y. X.; Shah, N.; Trentalange, S.; Tsai, O. D.; Wang, G.; Zhao, F.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[Derradi de Souza, R.; Takahashi, J.; Vasconcelos, G. M. S.] Univ Estadual Campinas, Sao Paulo, Brazil.
[Chen, L.; Huck, P.; Li, Z. M.; Liu, F.; Luo, X.; Pei, H.; Wu, Y. F.; Xu, J.; Yang, Y.; Yu, N.; Zhang, J. B.; Zhao, J.] Cent China Normal Univ, HZNU, Wuhan 430079, Peoples R China.
[Evdokimov, O.; Hofman, D. J.; Kauder, K.; Khan, Z. H.; Pandit, Y.; Wang, Y.; Ye, Z.] Univ Illinois, Chicago, IL 60607 USA.
[Chwastowski, J.; Kycia, R. A.] Cracow Univ Technol, Krakow, Poland.
[Cherney, M.; De Silva, L. C.; Don, D. M. M. D. Madagodagettige; McShane, T. S.; Ross, J. F.; Seger, J.] Creighton Univ, Omaha, NE 68178 USA.
[Bielcik, J.; Chaloupka, P.; Pachr, M.; Rusnakova, O.; Trzeciak, B. A.] Czech Tech Univ, FNSPE, Prague 11519, Czech Republic.
[Bielcikova, J.; Rusnak, J.; Sumbera, M.; Tlusty, D.; Vertesi, R.] Acad Sci Czech Republic, Inst Nucl Phys, CZ-25068 Rez, Czech Republic.
[Kisel, I.; Kollegger, T.; Kulakov, I.; Stock, R.; Zyzak, M.] Frankfurt Inst Adv Studies FIAS, Frankfurt, Germany.
[Das, S.; Mahapatra, D. P.; Sahu, P. K.] Inst Phys, Bhubaneswar 751005, Orissa, India.
[Nandi, B. K.; Pujahari, P. R.; Sarkar, A.; Varma, R.] Indian Inst Technol, Bombay 400076, Maharashtra, India.
[Dhamija, S.; Jacobs, W. W.; Page, B. S.; Skoby, M. J.; Vossen, A.; Wissink, S. W.] Indiana Univ, Bloomington, IN 47408 USA.
[Alekseev, I.; Bordyuzhin, I. G.; Kalinkin, D.; Svirida, D. N.] Alikhanov Inst Theoret & Expt Phys, Moscow, Russia.
[Bhasin, A.; Gupta, A.; Gupta, S.] 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.
[Alford, J.; Bouchet, J.; Keane, D.; Lomnitz, M.; Margetis, S.; Quintero, A.; Shanmuganathan, P. V.] Kent State Univ, Kent, OH 44242 USA.
[Adkins, J. K.; Fatemi, R.; Ramachandran, S.; Webb, G.] Univ Kentucky, Lexington, KY 40506 USA.
[Jang, H.; Noh, S. Y.] Korea Inst Sci & Technol Informat, Taejon, South Korea.
[Du, C. M.; Sun, Z.; Wang, J. S.; Xu, H.; Yang, Y.] Inst Modern Phys, Lanzhou, Peoples R China.
[Contin, G.; Dong, X.; Eun, L.; Greiner, L.; Masui, H.; Matis, H. S.; Mustafa, M. K.; Odyniec, G.; Porter, J.; Poskanzer, A. M.; Qiu, H.; Ritter, H. G.; Sakrejda, I.; Salur, S.; Schmah, A. M.; Shi, S. S.; Sichtermann, E. P.; Sun, X.; Sun, X. M.; Symons, T. J. M.; Szelezniak, M. A.; Thomas, J. H.; Wieman, H.; Xu, N.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Stevens, J. R.; van Nieuwenhuizen, G.] MIT, Cambridge, MA 02139 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.; Kotchenda, L.; Kravtsov, P.; Nigmatkulov, G.; Okorokov, V.; Strikhanov, M.] Moscow Engn Phys Inst, Moscow 115409, Russia.
[Haque, R.; Kumar, L.; Mohanty, B.; Nasim, Md.] Natl Inst Sci Educ & Res, Bhubaneswar 751005, Orissa, India.
[Anson, C. D.; Gangadharan, D. R.; Humanic, T. J.; Lisa, M. A.] Ohio State Univ, Columbus, OH 43210 USA.
[Bueltmann, S.; Koralt, I.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Pawlik, B.; Turnau, J.] Inst Nucl Phys PAN, Krakow, Poland.
[Aggarwal, M. M.; Bhati, A. K.; Pruthi, N. K.; Sharma, B.] Panjab Univ, Chandigarh 160014, India.
[Cendejas, R.; Dilks, C.; Heppelmann, S.] 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, Russia.
[Garand, D.; Hirsch, A.; Konzer, J.; Li, X.; Scharenberg, R. P.; Srivastava, B.; Stringfellow, B.; Wang, F.; Xie, W.; Yi, L.] Purdue Univ, W Lafayette, IN 47907 USA.
[Oh, K.; Yoo, I-K.] Pusan Natl Univ, Pusan 609735, South Korea.
[Raniwala, R.; Raniwala, S.; Solanki, D.] Univ Rajasthan, Jaipur 302004, Rajasthan, India.
[Butterworth, J.; Eppley, G.; Geurts, F.; Llope, W. J.; Roberts, J. B.; Xin, K.; Yepes, P.] Rice Univ, Houston, TX 77251 USA.
[Chen, H. F.; Cui, X.; Guo, Y.; Li, C.; Shao, M.; Sun, Y.; Tang, Z.; Wang, X. L.; Xu, Y.; Yang, C.; Zawisza, Y.; Zha, W.; Zhang, Y.; Zhang, Z. P.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Deng, J.; Xu, Q. H.; Zhang, J. L.] Shandong Univ, Jinan 250100, Shandong, Peoples R China.
[Chen, J. H.; Han, L-X.; Li, W.; Ma, G. L.; Ma, Y. G.; Shen, W. Q.; Shou, Q. Y.; Zhang, S.; Zhong, C.; Zhu, Y. H.] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Borowski, W.; Kabana, S.] SUBATECH, Nantes, France.
[Gunarathne, D. S.; Kraishan, A. F.; Li, X.; Surrow, B.; Vandenbroucke, M.] Temple Univ, Philadelphia, PA 19122 USA.
[Cervantes, M. C.; Chang, Z.; Djawotho, P.; 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.; Codrington, M. J. M.; Leyva, A. Davila; Hoffmann, G. W.; Markert, C.; Oldag, E. W.; Ray, R. L.; Schambach, J.; Wada, M.] Univ Texas Austin, Austin, TX 78712 USA.
[Bellwied, R.; McDonald, D.; Timmins, A. R.] Univ Houston, Houston, TX 77204 USA.
[Cheng, J.; Huang, X.; Kang, K.; Li, Y.; Wang, Y.; Xiao, Z.; Yan, W.; Zhang, X. P.; Zhu, X.] Tsinghua Univ, Beijing 100084, Peoples R China.
[Engle, K. S.; 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.; Pal, S. K.; Roy, A.; Singaraju, R. N.; Tribedy, P.; Viyogi, Y. P.] Ctr Variable Energy Cyclotron, Kolkata 700064, India.
[Girard, M.; Kikola, D. P.; Kisiel, A.; Pawlak, T.; Peryt, W.; Pluta, J.; Zbroszczyk, H.] Warsaw Univ Technol, Warsaw, Poland.
[Bichsel, H.; Cramer, J. G.] Univ Washington, Seattle, WA 98195 USA.
[Putschke, J.] Wayne State Univ, Detroit, MI 48201 USA.
[Caines, H.; Chikanian, A.; Finch, E.; Harris, J. W.; Horvat, S.; Majka, R.; Ohlson, A.; Riley, C. K.; Sandweiss, J.; Smirnov, N.] 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, Krakow, Poland.
RI Alekseev, Igor/J-8070-2014; Svirida, Dmitry/R-4909-2016; Inst. of
Physics, Gleb Wataghin/A-9780-2017; Okorokov, Vitaly/C-4800-2017; Ma,
Yu-Gang/M-8122-2013; Gunarathne, Devika/C-4903-2017; Takahashi,
Jun/B-2946-2012; Rusnak, Jan/G-8462-2014; Bielcikova, Jana/G-9342-2014;
Sumbera, Michal/O-7497-2014; XIAO, Zhigang/C-3788-2015; Fazio, Salvatore
/G-5156-2010; Kumar, Lokesh/A-6154-2010; Kycia, Radoslaw/J-4397-2015;
Chaloupka, Petr/E-5965-2012; Huang, Bingchu/H-6343-2015; Derradi de
Souza, Rafael/M-4791-2013; Xin, Kefeng/O-9195-2016; Yi, Li/Q-1705-2016
OI Alekseev, Igor/0000-0003-3358-9635; Okorokov,
Vitaly/0000-0002-7162-5345; Ma, Yu-Gang/0000-0002-0233-9900; Gunarathne,
Devika/0000-0002-7155-7418; Takahashi, Jun/0000-0002-4091-1779; Sumbera,
Michal/0000-0002-0639-7323; Kumar, Lokesh/0000-0002-2746-9840; Kycia,
Radoslaw/0000-0002-6390-4627; Huang, Bingchu/0000-0002-3253-3210;
Derradi de Souza, Rafael/0000-0002-2084-7001; Xin,
Kefeng/0000-0003-4853-9219; Yi, Li/0000-0002-7512-2657
FU RHIC Operations Group and RCF at BNL; NERSC Center at LBNL; KISTI Center
in Korea; Open Science Grid consortium; Offices of NP; HEP within the US
DOE Office of Science; US NSF; CNRS/IN2P3; FAPESP CNPq of Brazil;
Ministry of Education and Science of the Russian Federation; NNSFC; CAS;
MoST; MoE of China; Korean Research Foundation; GA and MSMT of the Czech
Republic; FIAS of Germany; DAE; DST; CSIR of India; National Science
Centre of Poland; National Research Foundation [NRF-2012004024];
Ministry of Science, Education and Sports of the Republic of Croatia;
RosAtom of Russia
FX We thank C. Gale, R. Rapp, G. Vujanovic, and C. Young for valuable
discussions and for providing the theoretical calculations. 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
Offices of NP and HEP within the US DOE Office of Science, the US NSF,
CNRS/IN2P3, FAPESP CNPq of Brazil, the Ministry of Education and Science
of the Russian Federation, NNSFC, CAS, MoST, and MoE of China, the
Korean Research Foundation, GA and MSMT of the Czech Republic, FIAS of
Germany, DAE, DST, and CSIR of India, the National Science Centre of
Poland, the National Research Foundation (NRF-2012004024), the Ministry
of Science, Education and Sports of the Republic of Croatia, and RosAtom
of Russia.
NR 64
TC 5
Z9 5
U1 1
U2 53
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 DEC 9
PY 2014
VL 90
IS 6
AR 064904
DI 10.1103/PhysRevC.90.064904
PG 15
WC Physics, Nuclear
SC Physics
GA AW6MR
UT WOS:000346384100005
ER
PT J
AU Yin, P
Zhang, JH
Parrish, DA
Shreeve, JM
AF Yin, Ping
Zhang, Jiaheng
Parrish, Damon A.
Shreeve, Jean'ne M.
TI Energetic N,N '-Ethylene-Bridged Bis(nitropyrazoles): Diversified
Functionalities and Properties
SO CHEMISTRY-A EUROPEAN JOURNAL
LA English
DT Article
DE bis(nitropyrazoles); energetic properties; explosives; nitrogen
heterocycles; structure elucidation
ID DERIVATIVES; SALTS; MONO; 3,4,5-TRINITRO-1H-PYRAZOLE; PERFORMANCE;
NITRATION; DESIGN; DI
AB A new class of N, N'-ethylene-bridged bis(nitropyrazoles) was synthesized and fully characterized. The highly efficient formation of the N, N'-ethylene bridge was accomplished using dibromoethane and ammonium or potassium pyrazolate. Further functional-group transformations of diaminobis(pyrazole) and dichlorobis(pyrazole) gave rise to diversified derivatives, including dinitramino-, diazido- and hexanitrobis(pyrazole). Single-crystal X-ray diffractions were obtained for hexanitro and diazido derivatives to illustrate the structural characteristics. Heats of formation and detonation performance were calculated by using Gaussian 03 and EXPLO5 v6.01 programs, respectively. Because of the different functionalized groups, the impact and friction sensitivities of these new compounds range from insensitive to sensitive. Among them, the hexanitro derivative displays the most promising overall energetic properties (density (rho)= 1.84 g cm(-3); decomposition temperature (T-d) = 250 degrees C; detonation pressure (P) = 34.1 GPa; detonation velocity (v(D))= 8759 ms(-1); impact sensitivity (IS) = 25 J; friction sensitivity (FS) = 160 N), which is competitive with those of 1,3,5-trinitrotriazacyclohexane (rho = 1.80 g cm(-3); T-d = 205 degrees C; P = 35.0 GPa; v(D) = 8762 ms(-1); IS = 7 J; FS= 120 N).
C1 [Yin, Ping; Zhang, Jiaheng; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA.
[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
RI Yin, Ping/A-3699-2014
OI Yin, Ping/0000-0002-2870-8225
FU ONR [NOOO14-12-1-0536]
FX We are grateful to Dr. Clifford Bedford and also for the support of ONR
(NOOO14-12-1-0536).
NR 41
TC 21
Z9 22
U1 2
U2 27
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0947-6539
EI 1521-3765
J9 CHEM-EUR J
JI Chem.-Eur. J.
PD DEC 8
PY 2014
VL 20
IS 50
BP 16529
EP 16536
DI 10.1002/chem.201404991
PG 8
WC Chemistry, Multidisciplinary
SC Chemistry
GA AW1NJ
UT WOS:000346055800018
PM 25332202
ER
PT J
AU Heyman, JN
Kune, RFF
Alebachew, BA
Nguyen, MD
Robinson, JT
AF Heyman, J. N.
Kune, R. F. Foo
Alebachew, B. A.
Nguyen, M. D.
Robinson, J. T.
TI Ultrafast terahertz Faraday rotation in graphene
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID CARRIER DISTRIBUTIONS; DYNAMICS; CONDUCTIVITY; SPECTROSCOPY; RELAXATION;
FILMS; LAYER
AB Terahertz (THz) Faraday rotation measurements were performed to investigate carrier dynamics in p-type Chemical vapor deposition (CVD) graphene. We used static and time-resolved polarization-sensitive THz transmission measurements in a magnetic field to probe free carriers in GaAs, InP, and Graphene. Static measurements probe the equilibrium carrier density and momentum scattering rate. Time-resolved (optical pump/THz probe) measurements probe the change in these quantities following photoexcitation. In a typical CVD graphene sample, we found that 0.5 ps following photoexcitation with 1 x 10(13) photons/cm(2) pulses at 800nm the effective hole scattering time decreased from 37 fs to 34.5 fs, while the carrier concentration increased from 2.0 x 10(12) cm(-2) to 2.04 x 10(12) cm(-2), leading to a transient decrease in the conductivity of the film. (C) 2014 AIP Publishing LLC.
C1 [Heyman, J. N.; Kune, R. F. Foo; Alebachew, B. A.; Nguyen, M. D.] Macalester Coll, St Paul, MN 55105 USA.
[Robinson, J. T.] Naval Res Lab, Washington, DC 20375 USA.
RP Heyman, JN (reprint author), Macalester Coll, St Paul, MN 55105 USA.
OI Heyman, James/0000-0003-1236-674X
FU National Science Foundation [DMR-1006065]; Office of Naval Research
FX The authors acknowledge the contribution of Mr. Yilikal Ayino in
building the THz magnetospectroscopy system. This material was based
upon work supported by the National Science Foundation under Grant No.
DMR-1006065. Research at NRL was supported by Base Programs funded
through the Office of Naval Research.
NR 30
TC 3
Z9 3
U1 1
U2 34
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD DEC 7
PY 2014
VL 116
IS 21
AR 214302
DI 10.1063/1.4903212
PG 5
WC Physics, Applied
SC Physics
GA AW0TU
UT WOS:000346007400043
ER
PT J
AU Padin, DS
Faix, D
Brodine, S
Lemus, H
Hawksworth, A
Putnam, S
Blair, P
AF Padin, Damaris S.
Faix, Dennis
Brodine, Stephanie
Lemus, Hector
Hawksworth, Anthony
Putnam, Shannon
Blair, Patrick
TI Retrospective analysis of demographic and clinical factors associated
with etiology of febrile respiratory illness among US military basic
trainees
SO BMC INFECTIOUS DISEASES
LA English
DT Article
DE Adenovirus; Influenza; Military trainees; Military medicine; Diagnosis
ID ADENOVIRUS SEROTYPE 14; CASE-DEFINITION; NAVAL RECRUITS; LARGE EPIDEMIC;
UNITED-STATES; YOUNG-ADULTS; RISK-FACTORS; INFLUENZA; INFECTION; HEALTHY
AB Background: Basic trainees in the US military have historically been vulnerable to respiratory infections. Adenovirus and influenza are the most common etiological agents responsible for febrile respiratory illness (FRI) among trainees and present with similar clinical signs and symptoms. Identifying demographic and clinical factors associated with the primary viral pathogens causing FRI epidemics among trainees will help improve differential diagnosis and allow for appropriate distribution of antiviral medications. The objective of this study was to determine what demographic and clinical factors are associated with influenza and adenovirus among military trainees.
Methods: Specimens were systematically collected from military trainees meeting FRI case definition (fever >= 38.0 degrees C with either cough or sore throat; or provider-diagnosed pneumonia) at eight basic training centers in the USA. PCR and/or cell culture testing for respiratory pathogens were performed on specimens. Interviewer-administered questionnaires collected information on patient demographic and clinical factors. Polychotomous logistic regression was employed to assess the association between these factors and FRI outcome categories: laboratory-confirmed adenovirus, influenza, or other FRI. Sensitivity, specificity, positive and negative predictive value were calculated for individual predictors and clinical combinations of predictors.
Results: Among 21,570 FRI cases sampled between 2004 and 2009, 63.6% were laboratory-confirmed adenovirus cases and 6.6% were laboratory-confirmed influenza cases. Subjects were predominantly young men (86.8% men; mean age 20.8 +/- 3.8 years) from Fort Jackson (18.8%), Great Lakes (17.1%), Fort Leonard Wood (16.3%), Marine Corps Recruit Depot (MCRD) San Diego (19.0%), Fort Benning (13.3%), Lackland (7.5%), MCRD Parris Island (8.7%), and Cape May (3.2%). The best multivariate predictors of adenovirus were the combination of sore throat (odds ratio [OR], 2.94; 95% confidence interval [CI], 2.66-3.25), cough (OR, 2.33; 95% CI, 2.11-2.57), and fever (OR, 2.07; 95% CI, 1.90-2.26) with a PPV of 77% (p <= .05). A combination of cough, fever, training week 0-2 and acute onset were most predictive of influenza (PPV = 38%; p <= .05).
Conclusions: Specific demographic and clinical factors were associated with laboratory-confirmed influenza and adenovirus among military trainees. Findings from this study can guide clinicians in the diagnosis and treatment of military trainees presenting with FRI.
C1 [Padin, Damaris S.; Faix, Dennis; Hawksworth, Anthony; Putnam, Shannon; Blair, Patrick] Naval Hlth Res Ctr, San Diego, CA 92106 USA.
[Brodine, Stephanie; Lemus, Hector] San Diego State Univ, Grad Sch Publ Hlth, San Diego, CA 92182 USA.
RP Padin, DS (reprint author), Naval Hlth Res Ctr, 140 Sylvester Rd, San Diego, CA 92106 USA.
EM dspadin@gmail.com
FU Armed Forces Health Surveillance Center, Global Emerging Infections
Surveillance and Response System (GEIS) [60501]
FX This work was supported by the Armed Forces Health Surveillance Center,
Global Emerging Infections Surveillance and Response System (GEIS)
operations, under work unit number 60501. The funding organization was
not involved in study design, data collection, analysis, interpretation
of results, or manuscript writing. The views expressed in this article
are those of the authors and do not reflect the official policy or
position of the Department of the Navy, Department of Defense, or the US
Government. Approved for public release; distribution is unlimited. This
research has been conducted in compliance with all applicable federal
regulations governing the protection of human subjects in research
(protocol NHRC.1999.0002).
NR 27
TC 4
Z9 4
U1 2
U2 3
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1471-2334
J9 BMC INFECT DIS
JI BMC Infect. Dis.
PD DEC 5
PY 2014
VL 14
AR 576
DI 10.1186/s12879-014-0576-2
PG 10
WC Infectious Diseases
SC Infectious Diseases
GA AY3JQ
UT WOS:000347480500001
PM 25475044
ER
PT J
AU Gu, L
Livenere, JE
Zhu, G
Tumkur, TU
Hu, H
Cortes, CL
Jacob, Z
Prokes, SM
Noginov, MA
AF Gu, Lei
Livenere, J. E.
Zhu, G.
Tumkur, T. U.
Hu, H.
Cortes, C. L.
Jacob, Z.
Prokes, S. M.
Noginov, M. A.
TI Angular distribution of emission from hyperbolic metamaterials
SO SCIENTIFIC REPORTS
LA English
DT Article
ID NEGATIVE REFRACTION; OPTICAL HYPERLENS; FIELD; SUPERLENS; INDEX
AB We have studied angular distribution of emission of dye molecules deposited on lamellar metal/dielectric and Si/Ag nanowire based metamaterials with hyperbolic dispersion. In agreement with the theoretical prediction, the emission pattern of dye on top of lamellar metamaterial is similar to that on top of metal. At the same time, the effective medium model predicts the emission patterns of the nanowire array and the dye film deposited on glass to be nearly identical to each other. This is not the case of our experiment. We tentatively explain the nearly Lambertian (proportional to cos theta) angular distribution of emission of the nanowire based sample by a surface roughness.
C1 [Gu, Lei; Livenere, J. E.; Zhu, G.; Tumkur, T. U.; Noginov, M. A.] Norfolk State Univ, Ctr Mat Res, Norfolk, VA 23504 USA.
[Hu, H.; Cortes, C. L.; Jacob, Z.] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada.
[Prokes, S. M.] US Navy, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA.
RP Noginov, MA (reprint author), Norfolk State Univ, Ctr Mat Res, Norfolk, VA 23504 USA.
EM mnoginov@nsu.edu
RI Tumkur, Thejaswi/L-3635-2016
OI Tumkur, Thejaswi/0000-0001-6390-0362
FU NSF PREM grant [DMR 1205457]; NSF IGERT grant [DGE 0966188]; AFOSR grant
[FA9550-09-1-0456]
FX The authors acknowledge the support by the NSF PREM grant # DMR 1205457,
NSF IGERT grant #DGE 0966188, and AFOSR grant # FA9550-09-1-0456.
NR 35
TC 8
Z9 8
U1 1
U2 40
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 DEC 5
PY 2014
VL 4
AR 7327
DI 10.1038/srep07327
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AW4SC
UT WOS:000346269800002
PM 25476126
ER
PT J
AU Cusick, KD
Fitzgerald, LA
Pirlo, RK
Cockrell, AL
Petersen, ER
Biffinger, JC
AF Cusick, Kathleen D.
Fitzgerald, Lisa A.
Pirlo, Russell K.
Cockrell, Allison L.
Petersen, Emily R.
Biffinger, Justin C.
TI Selection and Evaluation of Reference Genes for Expression Studies with
Quantitative PCR in the Model Fungus Neurospora crassa under Different
Environmental Conditions in Continuous Culture
SO PLOS ONE
LA English
DT Article
ID TIME RT-PCR; HOUSEKEEPING GENES; DIPTERA TEPHRITIDAE; ASCOMYCETE FUNGI;
QUANTIFICATION; NORMALIZATION; RNA; VALIDATION
AB Neurospora crassa has served as a model organism for studying circadian pathways and more recently has gained attention in the biofuel industry due to its enhanced capacity for cellulase production. However, in order to optimize N. crassa for biotechnological applications, metabolic pathways during growth under different environmental conditions must be addressed. Reverse-transcription quantitative PCR (RT-qPCR) is a technique that provides a high-throughput platform from which to measure the expression of a large set of genes over time. The selection of a suitable reference gene is critical for gene expression studies using relative quantification, as this strategy is based on normalization of target gene expression to a reference gene whose expression is stable under the experimental conditions. This study evaluated twelve candidate reference genes for use with N. crassa when grown in continuous culture bioreactors under different light and temperature conditions. Based on combined stability values from NormFinder and Best Keeper software packages, the following are the most appropriate reference genes under conditions of: (1) light/dark cycling: btl, asl, and vma1; (2) all-dark growth: btl, tbp, vma1, and vma2; (3) temperature flux: btl, vma1, act, and asl; (4) all conditions combined: vma1, vma2, tbp, and btl. Since N. crassa exists as different cell types (uni- or multi-nucleated), expression changes in a subset of the candidate genes was further assessed using absolute quantification. A strong negative correlation was found to exist between ratio and threshold cycle (C-T) values, demonstrating that C-T changes serve as a reliable reflection of transcript, and not gene copy number, fluctuations. The results of this study identified genes that are appropriate for use as reference genes in RT-qPCR studies with N. crassa and demonstrated that even with the presence of different cell types, relative quantification is an acceptable method for measuring gene expression changes during growth in bioreactors.
C1 [Cusick, Kathleen D.; Cockrell, Allison L.] US Naval Res Lab, Natl Res Council Associateship, Washington, DC 20375 USA.
[Fitzgerald, Lisa A.; Pirlo, Russell K.; Petersen, Emily R.; Biffinger, Justin C.] US Naval Res Lab, Div Chem, Washington, DC USA.
RP Cusick, KD (reprint author), US Naval Res Lab, Natl Res Council Associateship, Washington, DC 20375 USA.
EM Kathleen_cusick.ctr@code6100.nrl.navy.mil
FU Defense Advanced Research Projects Agency's Biochronicity program [MIPR
HR001133889]
FX This work was funded by the Defense Advanced Research Projects Agency's
Biochronicity program MIPR HR001133889. The views expressed are those of
the authors and do not reflect the official policy or position of the
Department of Defense or the U.S. Government. The funders had no role in
study design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 40
TC 4
Z9 4
U1 2
U2 35
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD DEC 4
PY 2014
VL 9
IS 12
AR e112706
DI 10.1371/journal.pone.0112706
PG 23
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AW6MB
UT WOS:000346382500074
PM 25474155
ER
PT J
AU Smolyaninova, VN
Yost, B
Zander, K
Osofsky, MS
Kim, H
Saha, S
Greene, RL
Smolyaninov, II
AF Smolyaninova, Vera N.
Yost, Bradley
Zander, Kathryn
Osofsky, M. S.
Kim, Heungsoo
Saha, Shanta
Greene, R. L.
Smolyaninov, Igor I.
TI Experimental demonstration of superconducting critical temperature
increase in electromagnetic metamaterials
SO SCIENTIFIC REPORTS
LA English
DT Article
ID SIZE
AB A recent proposal that the metamaterial approach to dielectric response engineering may increase the critical temperature of a composite superconductor-dielectric metamaterial has been tested in experiments with compressed mixtures of tin and barium titanate nanoparticles of varying composition. An increase of the critical temperature of the order of Delta T similar to 0.15 Kcompared to bulk tin has been observed for 40% volume fraction of barium titanate nanoparticles. Similar results were also obtained with compressed mixtures of tin and strontium titanate nanoparticles.
C1 [Smolyaninova, Vera N.; Yost, Bradley; Zander, Kathryn] Towson Univ, Dept Phys Astron & Geosci, Towson, MD 21252 USA.
[Osofsky, M. S.; Kim, Heungsoo] Naval Res Lab, Washington, DC 20375 USA.
[Saha, Shanta; Greene, R. L.] Univ Maryland, Dept Phys, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USA.
[Smolyaninov, Igor I.] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA.
RP Smolyaninova, VN (reprint author), Towson Univ, Dept Phys Astron & Geosci, 8000 York Rd, Towson, MD 21252 USA.
EM smoly@umd.edu
FU NSF grant at Towson [DMR-1104676]; AFOSR grant at Maryland
[FA9550-09-1-0603]
FX This work was supported in part by NSF grant DMR-1104676 at Towson and
AFOSR grant FA9550-09-1-0603 at Maryland. We are grateful to S. Anlage
for fruitful discussion, and to M. Monk for experimental help.
NR 18
TC 6
Z9 6
U1 1
U2 14
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 DEC 4
PY 2014
VL 4
AR 7321
DI 10.1038/srep07321
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AW4RM
UT WOS:000346268300001
PM 25471303
ER
PT J
AU Helton, JS
Pajerowski, DM
Qiu, YM
Zhao, Y
Shulyatev, DA
Mukovskii, YM
Bychkov, GL
Barilo, SN
Lynn, JW
AF Helton, Joel S.
Pajerowski, Daniel M.
Qiu, Yiming
Zhao, Yang
Shulyatev, Dmitry A.
Mukovskii, Yakov M.
Bychkov, Georgii L.
Barilo, Sergei N.
Lynn, Jeffrey W.
TI Polaron-mediated spin correlations in metallic and insulating
La(1-x)A(x)MnO(3) (A = Ca, Sr, or Ba)
SO PHYSICAL REVIEW B
LA English
DT Article
ID MAGNETORESISTIVE OXIDE LA0.7CA0.3MNO3; FERROMAGNETIC MANGANITES;
SINGLE-CRYSTALS; LA1-XCAXMNO3; SUPERCONDUCTORS; LA1-XSRXMNO3;
TRANSITION; DYNAMICS; PHYSICS
AB Neutron spectroscopy measurements reveal short-range spin correlations near and above the ferromagneticparamagnetic phase transition in manganite materials of the form La(1-x)A(x)MnO(3), including samples with an insulating ground state as well as colossal magnetoresistive samples with a metallic ground state. Quasielastic magnetic scattering is revealed that forms clear ridges running along the [100]-type directions in momentum space. A simple model consisting of a conduction electron hopping between spin-polarized Mn ions that becomes self-trapped after a few hops captures the essential physics of this magnetic component of the scattering. We associate this scattering component with the magnetic part of diffuse polarons, as we observe a temperature dependence similar to that of the diffuse structural scattering arising from individual polarons.
C1 [Helton, Joel S.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA.
[Helton, Joel S.; Pajerowski, Daniel M.; Qiu, Yiming; Zhao, Yang; Lynn, Jeffrey W.] NIST, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA.
[Qiu, Yiming; Zhao, Yang] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
[Shulyatev, Dmitry A.; Mukovskii, Yakov M.] Natl Univ Sci & Technol MISiS, Moscow 119991, Russia.
[Bychkov, Georgii L.; Barilo, Sergei N.] Acad Sci, Inst Solid State & Semicond Phys, Minsk 220072, Byelarus.
RP Helton, JS (reprint author), US Naval Acad, Dept Phys, Annapolis, MD 21402 USA.
EM helton@usna.edu; jeffrey.lynn@nist.gov
OI Pajerowski, Daniel/0000-0003-3890-2379
FU National Science Foundation (USA) [DMR-0944772]; Office of Naval
Research through the Naval Academy Research Council [N001614WX30023];
Ministry of Education and Science of the Russian Federation
[3.2076.2014/K]
FX This work utilized facilities supported in part by the National Science
Foundation (USA) under Agreement No. DMR-0944772. J.S.H acknowledges
partial support from the Office of Naval Research through the Naval
Academy Research Council, Award No. N001614WX30023. D.A.S. acknowledges
in part the Ministry of Education and Science of the Russian Federation,
Project No. 3.2076.2014/K, designated within the framework of 2014-2016
competitive grants for universities.
NR 50
TC 2
Z9 2
U1 3
U2 22
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD DEC 3
PY 2014
VL 90
IS 21
AR 214411
DI 10.1103/PhysRevB.90.214411
PG 7
WC Physics, Condensed Matter
SC Physics
GA CA9RE
UT WOS:000349261700002
ER
PT J
AU Kantsyrev, VL
Chuvatin, AS
Rudakov, LI
Velikovich, AL
Shrestha, IK
Esaulov, AA
Safronova, AS
Shlyaptseva, VV
Osborne, GC
Astanovitsky, AL
Weller, ME
Stafford, A
Schultz, KA
Cooper, MC
Cuneo, ME
Jones, B
Vesey, RA
AF Kantsyrev, V. L.
Chuvatin, A. S.
Rudakov, L. I.
Velikovich, A. L.
Shrestha, I. K.
Esaulov, A. A.
Safronova, A. S.
Shlyaptseva, V. V.
Osborne, G. C.
Astanovitsky, A. L.
Weller, M. E.
Stafford, A.
Schultz, K. A.
Cooper, M. C.
Cuneo, M. E.
Jones, B.
Vesey, R. A.
TI Compact hohlraum configuration with parallel planar-wire-array x-ray
sources at the 1.7-MA Zebra generator
SO PHYSICAL REVIEW E
LA English
DT Article
ID DESIGN
AB A compact Z-pinch x-ray hohlraum design with parallel-driven x-ray sources is experimentally demonstrated in a configuration with a central target and tailored shine shields at a 1.7-MA Zebra generator. Driving in parallel two magnetically decoupled compact double-planar-wire Z pinches has demonstrated the generation of synchronized x-ray bursts that correlated well in time with x-ray emission from a central reemission target. Good agreement between simulated and measured hohlraum radiation temperature of the central target is shown. The advantages of compact hohlraum design applications for multi-MA facilities are discussed.
C1 [Kantsyrev, V. L.; Shrestha, I. K.; Esaulov, A. A.; Safronova, A. S.; Shlyaptseva, V. V.; Osborne, G. C.; Astanovitsky, A. L.; Weller, M. E.; Stafford, A.; Schultz, K. A.; Cooper, M. C.] Univ Nevada, Dept Phys, Reno, NV 89557 USA.
[Chuvatin, A. S.] Ecole Polytech, Plasma Phys Lab, F-91128 Palaiseau, France.
[Rudakov, L. I.] Icarus Res Inc, Bethesda, MD 20824 USA.
[Velikovich, A. L.] US Navy, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Cuneo, M. E.; Jones, B.; Vesey, R. A.] Sandia Natl Labs, Albuquerque, NM 87110 USA.
RP Kantsyrev, VL (reprint author), Univ Nevada, Dept Phys, Reno, NV 89557 USA.
FU DOE/NNSA [DE-NA0001984, DE-FC52-06NA27586]; DOE/SNL [681371]; U.S.
Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL8500]; [DE-NA0002075]
FX This work was supported by the DOE/NNSA under Cooperative Agreements No.
DE-NA0001984 and No. DE-FC52-06NA27586, and in part by Agreement No.
DE-NA0002075 and a DOE/SNL Grant No. 681371. Sandia National
Laboratories is a multiprogram laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
for the U.S. Department of Energy's National Nuclear Security
Administration under Contract No. DE-AC04-94AL8500.
NR 13
TC 2
Z9 2
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
EI 1550-2376
J9 PHYS REV E
JI Phys. Rev. E
PD DEC 2
PY 2014
VL 90
IS 6
AR 063101
DI 10.1103/PhysRevE.90.063101
PG 5
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA AU9PX
UT WOS:000345928200007
PM 25615200
ER
PT J
AU McNab, RM
Angelis, DI
AF McNab, Robert M.
Angelis, Diana I.
TI Does computer-based training impact maintenance costs and actions? An
empirical analysis of the US Navy's AN/SQQ-89(v) sonar system
SO APPLIED ECONOMICS
LA English
DT Article
DE computer-based training; costs; system GMM; US Navy; maintenance
ID COGNITIVE LOAD THEORY; ASSISTED-INSTRUCTION; METAANALYSIS; PERFORMANCE;
STUDENTS; TIME
AB The United States Navy decided in the early 2000s to replace traditional, instructor-led schoolhouse training with computer-based training (CBT). While employing CBT may produce gains in knowledge acquisition and lower costs for repetitive, low-skill work, there is a lack of empirical evidence whether these benefits exist for more highly skilled Navy operations. Anecdotal evidence suggests that CBT failed to sufficiently prepare new sailors for sophisticated systems' maintenance and operation. To determine the validity of this evidence, we examine how CBT has affected the AN/SQQ-89(v) sonar. We empirically analyse whether the Navy's introduction of CBT significantly altered fleet maintenance costs, actions and training requirements, by assembling a unique data set of ships, locations, personnel, maintenance costs and maintenance actions. Controlling for the Navy's plan to man the system, the number of authorized billets and the number of personnel on board, we find that CBT adversely impacts costs, actions and maintenance hours for the sonar system.
C1 [McNab, Robert M.; Angelis, Diana I.] Naval Postgrad Sch, Def Resources Management Inst, Monterey, CA 93933 USA.
RP McNab, RM (reprint author), Naval Postgrad Sch, Def Resources Management Inst, Monterey, CA 93933 USA.
EM rmmcnab@nps.edu
NR 40
TC 1
Z9 1
U1 2
U2 445
PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXFORDSHIRE, ENGLAND
SN 0003-6846
EI 1466-4283
J9 APPL ECON
JI Appl. Econ.
PD DEC 2
PY 2014
VL 46
IS 34
BP 4256
EP 4266
DI 10.1080/00036846.2014.955254
PG 11
WC Economics
SC Business & Economics
GA AQ1RW
UT WOS:000342559700010
ER
PT J
AU MacKenzie, CA
Trafalis, TB
Barker, K
AF MacKenzie, Cameron A.
Trafalis, Theodore B.
Barker, Kash
TI A Bayesian Beta Kernel Model for Binary Classification and Online
Learning Problems
SO STATISTICAL ANALYSIS AND DATA MINING
LA English
DT Article
DE data mining; kernel; Bayesian; beta distribution; online learning
ID SUPPORT VECTOR MACHINES; CLASSIFIERS; ALGORITHMS
AB Recent advances in data mining have integrated kernel functions with Bayesian probabilistic analysis of Gaussian distributions. These machine-learning approaches can incorporate prior information with new data to calculate probabilistic rather than deterministic values for unknown parameters. This article extensively analyzes a specific Bayesian kernel model that uses a kernel function to calculate a posterior beta distribution that is conjugate to the prior beta distribution. Numerical testing of the beta kernel model on several benchmark datasets reveals that this model's accuracy is comparable with those of the support vector machine (SVM), relevance vector machine, naive Bayes, and logistic regression, and the model runs more quickly than all the other algorithms except for logistic regression. When one class occurs much more frequently than the other class, the beta kernel model often outperforms other strategies to handle imbalanced datasets, including under-sampling, over-sampling, and the Synthetic Minority Over-Sampling Technique. If data arrive sequentially over time, the beta kernel model easily and quickly updates the probability distribution, and this model is more accurate than an incremental SVM algorithm for online learning. (C) 2014 Wiley Periodicals, Inc.
C1 [MacKenzie, Cameron A.] Naval Postgrad Sch, Def Resources Management Inst, Monterey, CA 93943 USA.
[Trafalis, Theodore B.; Barker, Kash] Univ Oklahoma, Sch Ind & Syst Engn, Norman, OK 73019 USA.
RP MacKenzie, CA (reprint author), Naval Postgrad Sch, Def Resources Management Inst, Monterey, CA 93943 USA.
EM camacken@nps.edu
OI Trafalis, Theodore/0000-0001-6740-6337; Barker, Kash/0000-0002-0142-1558
NR 62
TC 0
Z9 0
U1 0
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1932-1864
EI 1932-1872
J9 STAT ANAL DATA MIN
JI Stat. Anal. Data Min.
PD DEC
PY 2014
VL 7
IS 6
BP 434
EP 449
DI 10.1002/sam.11241
PG 16
WC Computer Science, Artificial Intelligence; Computer Science,
Interdisciplinary Applications; Statistics & Probability
SC Computer Science; Mathematics
GA CV3UX
UT WOS:000364193000007
ER
PT J
AU Raphael, MP
Christodoulides, JA
Delehanty, JB
Long, JP
Byers, JM
AF Raphael, M. P.
Christodoulides, J. A.
Delehanty, J. B.
Long, J. P.
Byers, J. M.
TI Quantitative Real Time Imaging of Protein Secretions from Single Cells.
SO MOLECULAR BIOLOGY OF THE CELL
LA English
DT Meeting Abstract
CT ASCB/IFCB Meeting
CY DEC 06-10, 2014
CL Philadelphia, PA
SP Amer Soc Cell Biol, Int Federat Cell Biol
C1 [Raphael, M. P.; Christodoulides, J. A.; Delehanty, J. B.; Long, J. P.; Byers, J. M.] Naval Res Lab, Washington, DC 20375 USA.
NR 0
TC 0
Z9 0
U1 1
U2 4
PU AMER SOC CELL BIOLOGY
PI BETHESDA
PA 8120 WOODMONT AVE, STE 750, BETHESDA, MD 20814-2755 USA
SN 1059-1524
EI 1939-4586
J9 MOL BIOL CELL
JI Mol. Biol. Cell
PD DEC
PY 2014
VL 25
MA P614
PG 1
WC Cell Biology
SC Cell Biology
GA CE8LP
UT WOS:000352094101242
ER
PT J
AU Petry, FE
Yager, RR
AF Petry, Frederick E.
Yager, Ronald R.
TI Principles for organization of creative groups
SO JOURNAL OF AMBIENT INTELLIGENCE AND HUMANIZED COMPUTING
LA English
DT Article
DE Group creativity; Diversity; Generalization
ID DECISION-MAKING; DIVERSITY CRITERION; HIERARCHIES; WORDS; LOGIC
AB In this paper we first propose an outline for an overall organization of the group creative process. In particular two major components of the process are considered in detail. For group selection, diversity measures including those based on information theory and a species diversity measure are discussed and examples provided. The idea of a diversity space is also introduced to obtain some intuition on the issues relative to population diversity. The actual creative idea generation process is then considered with respect to the social interactions inside the selected creative group. Approaches to modeling the ways in which linguistic persuasion can occur are described. Finally approaches to the generalization of the ideas that evolved using concept hierarchies are presented.
C1 [Petry, Frederick E.] Stennis Space Ctr, Naval Res Lab, Hancock, MS 39529 USA.
[Yager, Ronald R.] Iona Coll, Inst Machine Intelligence, New Rochelle, NY 10801 USA.
RP Yager, RR (reprint author), Iona Coll, Inst Machine Intelligence, New Rochelle, NY 10801 USA.
EM yager@panix.com
FU Naval Research Laboratory's Base Program [0602435N]; ONR Grant
[N000141010121]
FX We would like to thank the Naval Research Laboratory's Base Program,
Program Element No. 0602435N and ONR Grant Award No. N000141010121 for
sponsoring this research.
NR 38
TC 0
Z9 0
U1 0
U2 3
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1868-5137
EI 1868-5145
J9 J AMB INTEL HUM COMP
JI J. Ambient Intell. Humaniz. Comput.
PD DEC
PY 2014
VL 5
IS 6
BP 789
EP 797
DI 10.1007/s12652-013-0213-8
PG 9
WC Computer Science, Artificial Intelligence; Computer Science, Information
Systems; Telecommunications
SC Computer Science; Telecommunications
GA CD7AH
UT WOS:000351242100002
ER
PT J
AU Elmore, P
Petry, F
Yager, R
AF Elmore, Paul
Petry, Fred
Yager, Ronald
TI Comparative measures of aggregated uncertainty representations
SO JOURNAL OF AMBIENT INTELLIGENCE AND HUMANIZED COMPUTING
LA English
DT Article
DE Information theory; Decision making; Possibility theory; Shannon
entropy; Gini index; Renyi entropy; Possibilistic conditioning;
Consistency measures
ID INFORMATION; ENTROPY
AB Uncertainty must be taken into account in all aspects of ambient intelligence and human decisions and activities. We investigate how to utilize both probabilistic and possibilistic sources of information for use in humanized decision-making. In particular we examine aspects of the possibilistic conditioning of probability developed by Yager. To provide bounding of the resulting probability analysis of the cases of completely certain and uncertain probability and possibility distribution are carried out. Additionally the cases of intermediate uncertainty and a general case of possibilities are analyzed. The Zadeh consistency measure is also used to assess these cases. To consider whether the conditioned probability is more informative for decision-making, three measures, Shannon entropy, Gini index and Renyi entropy are used to compare the original probability distributions and the conditioned distribution for the cases described.
C1 [Elmore, Paul; Petry, Fred] Naval Res Lab, Stennis Space Ctr, Stennis Space Ctr, MS 39529 USA.
[Yager, Ronald] Iona Coll, Inst Machine Intelligence, New Rochelle, NY 10801 USA.
RP Petry, F (reprint author), Naval Res Lab, Stennis Space Ctr, Stennis Space Ctr, MS 39529 USA.
EM fpetry@nrlssc.navy.mil
FU Naval Research Laboratory's Base Program [0602435 N]; ARO MURI grant
[W911NF-09-1-0392]
FX We would like to thank the Naval Research Laboratory's Base Program,
Program Element No. 0602435 N for sponsoring this research. Ronald Yager
has been in part supported by ARO MURI grant Number W911NF-09-1-0392.
NR 25
TC 4
Z9 4
U1 1
U2 4
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1868-5137
EI 1868-5145
J9 J AMB INTEL HUM COMP
JI J. Ambient Intell. Humaniz. Comput.
PD DEC
PY 2014
VL 5
IS 6
BP 809
EP 819
DI 10.1007/s12652-014-0228-9
PG 11
WC Computer Science, Artificial Intelligence; Computer Science, Information
Systems; Telecommunications
SC Computer Science; Telecommunications
GA CD7AH
UT WOS:000351242100004
ER
PT J
AU Chen, YT
Lin, CH
Chen, CH
Liu, JY
Huba, JD
Chang, LC
Liu, HL
Lin, JT
Rajesh, PK
AF Chen, Yu-Tsung
Lin, C. H.
Chen, C. H.
Liu, J. Y.
Huba, J. D.
Chang, L. C.
Liu, H. -L.
Lin, J. T.
Rajesh, P. K.
TI Theoretical study of the ionospheric plasma cave in the equatorial
ionization anomaly region
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID F-REGION; MODEL; DENSITY; TIDES; LAYER
AB This paper investigates the physical mechanism of an unusual equatorial electron density structure, plasma cave, located underneath the equatorial ionization anomaly by using theoretical simulations. The simulation results provide important new understanding of the dynamics of the equatorial ionosphere. It has been suggested previously that unusual (E) over right arrow x (B) over right arrow drifts might be responsible for the observed plasma cave structure, but model simulations in this paper suggest that the more likely cause is latitudinal meridional neutral wind variations. The neutral winds are featured by two divergent wind regions at off-equator latitudes and a convergent wind region around the magnetic equator, resulting in plasma divergences and convergence, respectively, to form the plasma caves structure. The tidal-decomposition analysis further suggests that the cave related meridional neutral winds and the intensity of plasma cave are highly associated with the migrating terdiurnal tidal component of the neutral winds.
C1 [Chen, Yu-Tsung; Lin, C. H.; Chen, C. H.; Lin, J. T.; Rajesh, P. K.] Natl Cheng Kung Univ, Dept Earth Sci, Tainan 70101, Taiwan.
[Liu, J. Y.; Chang, L. C.] Natl Cent Univ, Inst Space Sci, Jhongli, Taiwan.
[Huba, J. D.] Naval Res Lab, Plasma Phys Div, Washington, DC 20375 USA.
[Liu, H. -L.] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80307 USA.
RP Chen, CH (reprint author), Natl Cheng Kung Univ, Dept Earth Sci, Tainan 70101, Taiwan.
EM koichi@mail.ncku.edu.tw
RI Liu, Han-Li/A-9549-2008; Chang, Loren/G-3722-2015; Liu,
Jann-Yenq/Q-1668-2015;
OI Liu, Han-Li/0000-0002-6370-0704; Lin, Charles C. H./0000-0001-8955-8753
FU Ministry of Science and Technology (MST); National Space Organization of
Taiwan [MOST-103-2111-M-006-003-MY3, NSC-102-2119-M-006-007,
NSC-103-2111M-006-001-MY2, NSPO-S-102066, NSPO-S-102132]; MST grant
[NSC-101-2111-M-008-021-MY2]
FX This research was partially supported by Ministry of Science and
Technology (MST) and National Space Organization of Taiwan to National
Cheng Kung University under MOST-103-2111-M-006-003-MY3,
NSC-102-2119-M-006-007, NSC-103-2111M-006-001-MY2, NSPO-S-102066, and
NSPO-S-102132. L.C.C. was supported by MSTgrant
NSC-101-2111-M-008-021-MY2. The authors thank I.-T. Lee for his
discussion and helpful comments. The authors are grateful to the two
reviewers for their comprehensive and kind suggestions.
NR 26
TC 1
Z9 1
U1 0
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD DEC
PY 2014
VL 119
IS 12
DI 10.1002/2014JA020235
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA CA8IG
UT WOS:000349161100068
ER
PT J
AU Clarke, TE
Higgins, CA
Skarda, J
Imai, K
Imai, M
Reyes, F
Thieman, J
Jaeger, T
Schmitt, H
Dalal, NP
Dowell, J
Ellingson, SW
Hicks, B
Schinzel, F
Taylor, GB
AF Clarke, T. E.
Higgins, C. A.
Skarda, Jinhie
Imai, Kazumasa
Imai, Masafumi
Reyes, Francisco
Thieman, Jim
Jaeger, Ted
Schmitt, Henrique
Dalal, Nagini Paravastu
Dowell, Jayce
Ellingson, S. W.
Hicks, Brian
Schinzel, Frank
Taylor, G. B.
TI Probing Jovian decametric emission with the long wavelength array
station 1
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID COMPLETE POLARIZATION STATE; ELECTRON-CYCLOTRON MASER; IO-JUPITER
INTERACTION; RADIO EMISSIONS; DYNAMIC SPECTRA; S-BURSTS; KILOMETRIC
RADIATION; MILLISECOND BURSTS; MODULATION LANES; ARCS
AB New observations of Jupiter's decametric radio emissions have been made with the Long Wavelength Array Station 1 (LWA1), which is capable of making high-quality observations as low as 11 MHz. Full Stokes parameters were determined for bandwidths of 16 MHz. Here we present the first LWA1 results for the study of six Io-related events at temporal resolutions as fine as 0.25 ms. LWA1 data show excellent spectral detail in Jovian DAM such as simultaneous left-hand circular (LHC) and right-hand circular (RHC) polarized Io-related arcs and source envelopes, modulation lane features, S-burst structures, narrow band N events, and interactions between S bursts and N events. The sensitivity of the LWA1 combined with the low-radio-frequency interference environment allow us to trace the start of the LHC Io-C source region to much earlier CML III than typically found in the literature. We find that the Io-C starts as early as CML III = 230 degrees at frequencies near 11 MHz. This early start of the Io-C emission may be valuable for refining models of the emission mechanism. We also detect modulation lane structures that appear continuous across LHC and RHC emissions, suggesting that both polarizations may originate from the same hemisphere of Jupiter. We present a study of rare S bursts detected during an Io-D event and show that drift rates are consistent with those from other Io-related sources. Finally, S-N burst events are seen in high spectral and temporal resolution and our data strongly support the cospatial origins of these events.
C1 [Clarke, T. E.; Schmitt, Henrique; Hicks, Brian] Naval Res Lab, Washington, DC 20375 USA.
[Higgins, C. A.] Middle Tennessee State Univ, Dept Phys & Astron, Murfreesboro, TN 37130 USA.
[Skarda, Jinhie] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA.
[Imai, Kazumasa] Kochi Natl Coll Technol, Dept Elect Engn & Informat Sci, Kochi, Japan.
[Imai, Masafumi] Kyoto Univ, Dept Geophys, Kyoto, Japan.
[Reyes, Francisco] Univ Florida, Dept Astron, Gainesville, FL 32611 USA.
[Thieman, Jim] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Jaeger, Ted] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA.
[Dalal, Nagini Paravastu] Naval Res Lab, ASEEE, Washington, DC 20375 USA.
[Dowell, Jayce; Schinzel, Frank; Taylor, G. B.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
[Ellingson, S. W.] Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA.
RP Clarke, TE (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM tracy.clarke.ca@nrl.navy.mil
RI Imai, Masafumi/S-8736-2016
OI Imai, Masafumi/0000-0002-2814-4036
FU 6.1 Base funding; Office of Naval Research [N00014-07-C-0147]; National
Science Foundation of the University Radio Observatories program
[AST-1139963, AST-1139974]; Tennessee Space Grant Consortium; JSPS
KAK-ENHI [25400480]; Science and Engineering Apprenticeship Program
(SEAP) at the Naval Research Laboratory; NSF [AST-1212162]
FX We thank the referees for a careful reading of the manuscript and
helpful comments. We also wish to thank the staff of the Long Wavelength
Array. Basic research in radio astronomy at the Naval Research
Laboratory is supported by 6.1 Base funding. Construction of LWA1 was
supported by the Office of Naval Research under contract
N00014-07-C-0147. Support for operations and continuing development of
LWA1 is provided by the National Science Foundation under grants
AST-1139963 and AST-1139974 of the University Radio Observatories
program. C.A.H. acknowledges support from the Tennessee Space Grant
Consortium. This research has been supported in part by JSPS KAK-ENHI
grant 25400480. J.S. (a student at Montgomery Blair High School) was
supported by the Science and Engineering Apprenticeship Program (SEAP)
at the Naval Research Laboratory. G.B.T. acknowledges partial support
for this work from NSF grant AST-1212162. Data used for this publication
are available through request to the authors.
NR 62
TC 1
Z9 1
U1 0
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD DEC
PY 2014
VL 119
IS 12
DI 10.1002/2014JA020289
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA CA8IG
UT WOS:000349161100015
ER
PT J
AU Booth-Kewley, S
McWhorter, SK
AF Booth-Kewley, Stephanie
McWhorter, Stephanie K.
TI Highly Realistic, Immersive Training for Navy Corpsmen: Preliminary
Results
SO MILITARY MEDICINE
LA English
DT Article
AB Highly realistic, immersive training has been developed for Navy corpsmen based on the success of the Infantry Immersion Trainer. This new training is built around scenarios that are designed to depict real-life, operational situations. Each scenario used in the training includes sights, sounds, smells, and distractions to simulate realistic and challenging combat situations. The primary objective of this study was to assess corpsmen participants' satisfaction with highly realistic training. The study sample consisted of 434 male Navy service members attending Field Medical Training Battalion-West, Camp Pendleton, California. Corpsmen participants completed surveys after receiving the training. Participants expressed high levels of satisfaction with the training overall and with several specific elements of the training. The element of the training that the corpsmen rated the highest was the use of live actors. The vast majority of the participants reported that the training had increased their overall confidence about being successful corpsmen and had strengthened their confidence in their ability to provide care under pressure. Additional research should extend highly realistic training to other military medical provider populations.
C1 [Booth-Kewley, Stephanie; McWhorter, Stephanie K.] Naval Hlth Res Ctr, Behav Sci & Epidemiol Dept, San Diego, CA 92106 USA.
RP Booth-Kewley, S (reprint author), Naval Hlth Res Ctr, Behav Sci & Epidemiol Dept, 140 Sylvester Rd, San Diego, CA 92106 USA.
FU U.S. Navy Medicine Bureau of Medicine and Surgery (BUMED), Washington,
DC [61113]
FX The authors gratefully acknowledge Dr. Karl Van Orden, Isabel Altarejos,
Renee Dell'Acqua, Robyn Highfill-McRoy, Emily Schmied, and the
leadership and staff of the Field Medical Training Battalion-West, Camp
Pendleton, for assistance with the study. This research was supported by
the U.S. Navy Medicine Bureau of Medicine and Surgery (BUMED),
Washington, DC, under Work Unit No. 61113.
NR 4
TC 0
Z9 0
U1 0
U2 1
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD DEC
PY 2014
VL 179
IS 12
BP 1439
EP 1443
DI 10.7205/MILMED-D-14-00198
PG 5
WC Medicine, General & Internal
SC General & Internal Medicine
GA CA7MB
UT WOS:000349100300006
PM 25469964
ER
PT J
AU Gaillou, E
Post, JE
Byrne, KS
Butler, JE
AF Gaillou, Eloise
Post, Jeffrey E.
Byrne, Keal S.
Butler, James E.
TI STUDY OF THE BLUE MOON DIAMOND
SO GEMS & GEMOLOGY
LA English
DT Article
ID TEMPERATURE TREATMENT; HIGH-PRESSURE; PHOSPHORESCENCE; HOPE
AB The Blue Moon diamond, discovered in January 2014 at the historic Cullinan mine in South Africa, is of significance from both trade and scientific perspectives. The 29.62 ct rough yielded a 12.03 ct Fancy Vivid blue, Internally Flawless gem. The authors were provided the opportunity to study this rare diamond at the Smithsonian Institution before it went on exhibit at the Natural History Museum of Los Angeles County. Infrared spectroscopy revealed that the amount of uncompensated boron in the diamond was 0.26 +/- 0.04 ppm, consistent with measurements of several large type IIb blue diamonds previously studied. After exposure to short-wave ultraviolet light, the Blue Moon displayed orange-red phosphorescence that remained visible for up to 20 seconds. This observation was surprising, as orange-red phosphorescence is typically associated with diamonds of Indian origin, such as the Hope and the Wittelsbach-Graff. Time-resolved phosphorescence spectra exhibited peaks at 660 and 500 nm, typical for natural type II blue diamonds. As with most natural diamonds, the Blue Moon showed strain-induced birefringence.
C1 [Gaillou, Eloise] MINES ParisTech, Sch Mines, Paris, France.
[Gaillou, Eloise] Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20560 USA.
[Gaillou, Eloise] Nat Hist Museum Los Angeles Cty, Los Angeles, CA USA.
[Post, Jeffrey E.] Natl Gem & Mineral Collect, Washington, DC USA.
[Byrne, Keal S.; Butler, James E.] Smithsonians Natl Museum Nat Hist, Washington, DC USA.
[Butler, James E.] Naval Res Lab, Washington, DC 20375 USA.
RP Gaillou, E (reprint author), MINES ParisTech, Sch Mines, Paris, France.
EM eloise.gaillou@gmail.com
RI Butler, James/B-7965-2008; Gaillou, Eloise/D-1753-2009
OI Butler, James/0000-0002-4794-7176; Gaillou, Eloise/0000-0002-7949-268X
NR 16
TC 1
Z9 1
U1 0
U2 14
PU GEMOLOGICAL INST AMER
PI CARLSBAD
PA 5345 ARMADA DR, CARLSBAD, CA 92008 USA
SN 0016-626X
J9 GEMS GEMOL
JI Gems Gemol.
PD WIN
PY 2014
VL 50
IS 4
BP 280
EP 286
DI 10.5741/GEMS.50.4.280
PG 7
WC Mineralogy
SC Mineralogy
GA CA0RF
UT WOS:000348623600004
ER
PT J
AU Barrett, BS
Swick, WA
Smith, DE
AF Barrett, Bradford S.
Swick, William A.
Smith, Dwight E., Jr.
TI Assessing an Undergraduate Oceanography Curriculum
SO OCEANOGRAPHY
LA English
DT Editorial Material
ID METEOROLOGY; EDUCATION; WEATHER
C1 [Barrett, Bradford S.; Swick, William A.; Smith, Dwight E., Jr.] US Naval Acad, Dept Oceanog, Annapolis, MD 21402 USA.
RP Barrett, BS (reprint author), US Naval Acad, Dept Oceanog, Annapolis, MD 21402 USA.
EM bbarrett@usna.edu
NR 26
TC 1
Z9 1
U1 1
U2 3
PU OCEANOGRAPHY SOC
PI ROCKVILLE
PA P.O. BOX 1931, ROCKVILLE, MD USA
SN 1042-8275
J9 OCEANOGRAPHY
JI Oceanography
PD DEC
PY 2014
VL 27
IS 4
SI SI
BP 13
EP 17
DI 10.5670/oceanog.2014.99
PG 5
WC Oceanography
SC Oceanography
GA CA3TC
UT WOS:000348828000004
ER
PT J
AU Denning, PJ
AF Denning, Peter J.
TI The Whole Professional
SO COMMUNICATIONS OF THE ACM
LA English
DT Editorial Material
C1 Naval Postgrad Sch Monterey, Cebrowski Inst Informat innovat, Monterey, CA 93943 USA.
RP Denning, PJ (reprint author), Naval Postgrad Sch Monterey, Cebrowski Inst Informat innovat, Monterey, CA 93943 USA.
EM pjd@nps.edu
NR 6
TC 2
Z9 2
U1 0
U2 0
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 0001-0782
EI 1557-7317
J9 COMMUN ACM
JI Commun. ACM
PD DEC
PY 2014
VL 57
IS 12
BP 24
EP 27
DI 10.1145/2676859
PG 4
WC Computer Science, Hardware & Architecture; Computer Science, Software
Engineering; Computer Science, Theory & Methods
SC Computer Science
GA AZ6AZ
UT WOS:000348301800019
ER
PT J
AU Armey, LE
Lipow, J
Webb, NJ
AF Armey, Laura E.
Lipow, Jonathan
Webb, Natalie J.
TI The impact of electronic financial payments on crime
SO INFORMATION ECONOMICS AND POLICY
LA English
DT Article
DE Electronic financial transactions; Crime; Cashless economy
ID VIOLENT CRIME; PANEL-DATA; INEQUALITY
AB In this paper, we test the hypothesis that access to electronic payments may reduce crime. Our results suggest that there is a negative and significant statistical relationship between access to electronic payments and the incidence of economic crimes such as robbery and burglary, while electronic transactions do little to reduce the incidence of non-economic crimes such as homicide and rape. This paper provides evidence that policies and technologies that enable the proliferation of cashless transactions have the desired impact of deterring crime. Published by Elsevier B.V.
C1 [Armey, Laura E.; Lipow, Jonathan; Webb, Natalie J.] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Armey, LE (reprint author), Naval Postgrad Sch, 699 Dyer Rd,Bldg 234, Monterey, CA 93943 USA.
EM larmey@nps.edu; jlipow@nps.edu; njwebb@nps.edu
OI Armey, Laura/0000-0001-5260-5720
NR 20
TC 0
Z9 0
U1 2
U2 11
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-6245
EI 1873-5975
J9 INF ECON POLICY
JI Inf. Econ. Policy
PD DEC
PY 2014
VL 29
BP 46
EP 57
DI 10.1016/j.infoecopol.2014.10.002
PG 12
WC Economics
SC Business & Economics
GA AY5GN
UT WOS:000347601000004
ER
PT J
AU Melzer, JM
Baldassari, CM
AF Melzer, Jonathan M.
Baldassari, Cristina M.
TI Hypoharyngeal injury in an infant from non-accidental trauma
SO INTERNATIONAL JOURNAL OF PEDIATRIC OTORHINOLARYNGOLOGY
LA English
DT Article
DE Non-accidental trauma; Trauma; Hypopharyngeal injury; Oropharyngeal
injury; Child abuse; Oropharyngeal laceration
AB Non-accidental trauma is a sad but commonly described mechanism of injury in the pediatric literature. However, the otolaryngologist infrequently encounters the initial presentation of non-accidental trauma despite the fact that a significant percentage of injuries take place in the head and neck. This case report seeks to discuss otolaryngologic presentations of non-accidental trauma in the pediatric population as well as to discuss management strategies. The case of a 3 month old female with a hypopharyngeal injury and esophageal perforation is presented and discussed. Published by Elsevier Ireland Ltd.
C1 [Melzer, Jonathan M.] Naval Med Ctr, Dept Otolaryngol Head & Neck Surg, Portsmouth, VA USA.
[Baldassari, Cristina M.] Eastern Virginia Med Sch, Dept Otolaryngol Head & Neck Surg, Norfolk, VA 23501 USA.
[Baldassari, Cristina M.] Childrens Hosp Kings Daughters, Dept Pediat Otolaryngol, Norfolk, VA USA.
RP Melzer, JM (reprint author), Naval Med Ctr Portsmouth, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
EM jmelzer215@gmail.com
NR 4
TC 1
Z9 1
U1 0
U2 3
PU ELSEVIER IRELAND LTD
PI CLARE
PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000,
IRELAND
SN 0165-5876
EI 1872-8464
J9 INT J PEDIATR OTORHI
JI Int. J. Pediatr. Otorhinolaryngol.
PD DEC
PY 2014
VL 78
IS 12
BP 2312
EP 2313
DI 10.1016/j.ijporl.2014.09.014
PG 2
WC Otorhinolaryngology; Pediatrics
SC Otorhinolaryngology; Pediatrics
GA AY6FY
UT WOS:000347663800055
PM 25305065
ER
PT J
AU Williams, RG
AF Williams, Reginald G.
TI The Naval Research Enterprise Intern Program (NREIP)
SO NAVAL ENGINEERS JOURNAL
LA English
DT Article
AB The Naval Research Enterprise Intern Program (NREIP) provides a practical means for undergraduate and graduate students to have hands on research opportunities at a naval laboratory under the guidance of a mentor. The hands-on opportunity is one of the most basic resources to influence the initial and lifetime career decisions of these future scientist and engineers. Our goal is that STEM graduates can look back and point to NREIP as one of the major key factors in their career choice. The Navy also wants to continually increase the number of underrepresented groups who participate in NREIP by reaching out and encouraging students to apply from Historically Black Colleges and Universities and Minority Serving Institutes (HBCU/MSI).
C1 Off Naval Res, NREIP Program, Arlington, VA 22217 USA.
RP Williams, RG (reprint author), Off Naval Res, NREIP Program, Arlington, VA 22217 USA.
RI Duello, Theresa/P-5752-2015
NR 22
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC NAVAL ENG INC
PI ALEXANDRIA
PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 USA
SN 0028-1425
EI 1559-3584
J9 NAV ENG J
JI Nav. Eng. J.
PD DEC
PY 2014
VL 126
IS 4
BP 55
EP 59
PG 5
WC Engineering, Marine; Engineering, Civil; Oceanography
SC Engineering; Oceanography
GA AY7JC
UT WOS:000347735700008
ER
PT J
AU Cooper, K
Edwards, D
AF Cooper, Kelly
Edwards, David
TI CINT: Centers for Innovation in Naval Technology
SO NAVAL ENGINEERS JOURNAL
LA English
DT Article
C1 [Cooper, Kelly] Off Naval Res, Arlington, VA 22217 USA.
[Edwards, David] Strateg Anal Inc, Toronto, ON, Canada.
RP Cooper, K (reprint author), Off Naval Res, Arlington, VA 22217 USA.
NR 5
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC NAVAL ENG INC
PI ALEXANDRIA
PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 USA
SN 0028-1425
EI 1559-3584
J9 NAV ENG J
JI Nav. Eng. J.
PD DEC
PY 2014
VL 126
IS 4
BP 73
EP 78
PG 6
WC Engineering, Marine; Engineering, Civil; Oceanography
SC Engineering; Oceanography
GA AY7JC
UT WOS:000347735700011
ER
PT J
AU Cummings, MA
AF Cummings, Mary Ann
TI Swappable Experimental Frames and Simulators For System of Systems
Modeling and Simulations (Work In Progress)
SO NAVAL ENGINEERS JOURNAL
LA English
DT Article
AB Today, many military weapon capabilities are achieved through a System of Systems (SoS) approach. Modeling and Simulation (M&S) is an affordable validation alternative to operationally testing all functionality and interfaces in a complex weapon SoS. This paper describes research in developing a mechanism for producing a simulator and experimental frame (also known as the simulation objectives) that can be reused such that only one simulator to drive all the models of an SoS simulation and one experimental frame that allows user inputs to modify parameters to test many objectives is needed. Using the definition of "swappable" to mean the ability to exchange one item for another, this mechanism also produces swappable simulators and experimental frames that allow the models not to change when the simulator and/or the objectives of the experiment change. In addition, a metrics collector is added to allow for the specification and collection of SoS metrics that can be used to identify emergent behavior among the interactions of the models. These elements provide reusable experimental frames and simulation drivers to be used with any models tied together in a simulation. A framework that accepts these simulators and experimental frames can be used for any simulation.
C1 Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Cummings, MA (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 13
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC NAVAL ENG INC
PI ALEXANDRIA
PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 USA
SN 0028-1425
EI 1559-3584
J9 NAV ENG J
JI Nav. Eng. J.
PD DEC
PY 2014
VL 126
IS 4
BP 103
EP 106
PG 4
WC Engineering, Marine; Engineering, Civil; Oceanography
SC Engineering; Oceanography
GA AY7JC
UT WOS:000347735700016
ER
PT J
AU Golda, EM
AF Golda, E. Michael
TI Women in Engineering - Enabling the First Electronic Computer
SO NAVAL ENGINEERS JOURNAL
LA English
DT Editorial Material
C1 Naval Ship Syst Engn Stn, Carderock Div, Naval Surface Warfare Ctr, Machinery Res & Engn Dept, Philadelphia, PA 19107 USA.
RP Golda, EM (reprint author), Naval Ship Syst Engn Stn, Carderock Div, Naval Surface Warfare Ctr, Machinery Res & Engn Dept, Philadelphia, PA 19107 USA.
NR 4
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC NAVAL ENG INC
PI ALEXANDRIA
PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 USA
SN 0028-1425
EI 1559-3584
J9 NAV ENG J
JI Nav. Eng. J.
PD DEC
PY 2014
VL 126
IS 4
BP 176
EP 176
PG 1
WC Engineering, Marine; Engineering, Civil; Oceanography
SC Engineering; Oceanography
GA AY7JC
UT WOS:000347735700029
ER
PT J
AU Santiago, F
Bagwell, BE
Pinon, V
Krishna, S
AF Santiago, Freddie
Bagwell, Brett E.
Pinon, Victor, III
Krishna, Sanjay
TI Adaptive polymer lens for rapid zoom shortwave infrared imaging
applications
SO OPTICAL ENGINEERING
LA English
DT Article
DE polymer lens; zoom; tunable; optics; photonics
AB This work demonstrates the use of adaptive polymer lenses (APLs) for short-wavelength infrared (SWIR) applications. First, we present a push-button adaptive optical zoom system for variable magnification with a SWIR focal plane array. We then present a push-button, variable divergence, SWIR laser system for pointing and illumination. Last, we outline a system that combines the two: an SWIR adaptive zoom coupled with an APL-enhanced designator/illuminator. The result would allow a user to toggle between different fields of view (magnification), while optimizing illumination (beam divergence) for each field of view. This could be critical for situational awareness and target identification/designation in tactical applications. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
C1 [Santiago, Freddie] US Naval Res Lab, Washington, DC 20375 USA.
[Bagwell, Brett E.; Pinon, Victor, III] Sandia Natl Labs, Albuquerque, NM 87123 USA.
[Krishna, Sanjay] UNM Ctr High Technol Mat, Albuquerque, NM 87106 USA.
RP Santiago, F (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM freddie.santiago@nrl.navy.mil
FU U.S. Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX SNL will like to acknowledge UTC Aerospace Systems, Sensors Unlimited,
for their technical support on this effort, and Night Vision and
Electronic Sensors Directorate for funding this research. Sandia
National Laboratories is a multi-program laboratory managed and operated
by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin
Corporation, for the U.S. Department of Energy's National Nuclear
Security Administration under contract DE-AC04-94AL85000. SAND Number:
2014-4801 J.
NR 4
TC 1
Z9 1
U1 1
U2 6
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
EI 1560-2303
J9 OPT ENG
JI Opt. Eng.
PD DEC
PY 2014
VL 53
IS 12
AR 125101
DI 10.1117/1.OE.53.12.125101
PG 4
WC Optics
SC Optics
GA AY7EX
UT WOS:000347725200060
ER
PT J
AU MacKenzie, CA
AF MacKenzie, Cameron A.
TI Summarizing Risk Using Risk Measures and Risk Indices
SO RISK ANALYSIS
LA English
DT Article
DE Risk communication; risk index; risk measure; transportation
ID ACCEPTABLE RISK; VULNERABILITY; FOUNDATIONS; AVIATION; SAFETY; MODEL
AB Our society is fascinated with risk in many different areas and disciplines. One of the main ways to describe and communicate the level of risk is through risk indices, which summarize risk using numbers or categories such as words, letters, or colors. These indices are used to communicate risks to the public, understand how risk is changing over time, compare among different risks, and support decision making. Given the different methods to construct risk indices, including flawed methods such as risk matrices, this article develops specific steps that analysts can follow to create a risk index. This article emphasizes the importance of describing risk with a probability distribution, developing a numerical risk measure that summarizes the probability distribution, and finally translating the risk measure to an index. Measuring the risk is the most difficult part and requires the analyst to summarize a probability distribution into one or possibly a few numbers. The risk measure can then be transformed to a numerical or categorical index. I apply the method outlined in this article to construct a risk index that compares the risk of fatalities in aviation and highway transportation.
C1 Naval Postgrad Sch, Def Resources Management Inst, Monterey, CA 93943 USA.
RP MacKenzie, CA (reprint author), Naval Postgrad Sch, Def Resources Management Inst, 699 Dyer Rd,Bldg 234, Monterey, CA 93943 USA.
EM camacken@nps.edu
NR 89
TC 4
Z9 4
U1 2
U2 13
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0272-4332
EI 1539-6924
J9 RISK ANAL
JI Risk Anal.
PD DEC
PY 2014
VL 34
IS 12
BP 2143
EP 2162
DI 10.1111/risa.12220
PG 20
WC Public, Environmental & Occupational Health; Mathematics,
Interdisciplinary Applications; Social Sciences, Mathematical Methods
SC Public, Environmental & Occupational Health; Mathematics; Mathematical
Methods In Social Sciences
GA AZ6DY
UT WOS:000348309900007
PM 24916468
ER
PT J
AU Phelps, C
Gong, Q
Royset, JO
Walton, C
Kaminer, I
AF Phelps, Chris
Gong, Qi
Royset, Johannes O.
Walton, Claire
Kaminer, Isaac
TI Consistent approximation of a nonlinear optimal control problem with
uncertain parameters
SO AUTOMATICA
LA English
DT Article
DE Optimal control; Computational methods; Optimization; Nonlinear system;
Search theory
ID OPTIMAL SEARCH; MOVING TARGET; OPTIMIZATION; MOTION; CONVERGENCE;
PROBABILITY; THEOREM
AB This paper focuses on a non-standard constrained nonlinear optimal control problem in which the objective functional involves an integration over a space of stochastic parameters as well as an integration over the time domain. The research is inspired by the problem of optimizing the trajectories of multiple searchers attempting to detect non-evading moving targets. In this paper, we propose a framework based on the approximation of the integral in the parameter space for the considered uncertain optimal control problem. The framework is proved to produce a zeroth-order consistent approximation in the sense that accumulation points of a sequence of optimal solutions to the approximate problem are optimal solutions of the original problem. In addition, we demonstrate the convergence of the corresponding adjoint variables. The accumulation points of a sequence of optimal state-adjoint pairs for the approximate problem satisfy a necessary condition of Pontryagin Minimum Principle type, which facilitates assessment of the optimality of numerical solutions. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Phelps, Chris; Gong, Qi; Walton, Claire] Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA.
[Royset, Johannes O.] Naval Postgrad Sch, Dept Operat Res, Monterey, CA USA.
[Kaminer, Isaac] Naval Postgrad Sch, Dept Mech & Astronaut Engn, Monterey, CA USA.
RP Phelps, C (reprint author), Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA.
EM cdphelps@soe.ucsc.edu; qigong@soe.ucsc.edu; joroyset@nps.edu;
cwalton@soe.ucsc.edu; kaminer@nps.edu
FU US Office of Naval Research [N0001412WX21229]
FX This work is supported by US Office of Naval Research under Grant
N0001412WX21229. The material in this paper was partially presented at
the 51st IEEE Conference on Decision and Control (CDC), December 10-13,
2012, Maui, Hawaii, USA. This paper was recommended for publication in
revised form by Associate Editor Michael V. Basin under the direction of
Editor Ian R. Petersen.
NR 40
TC 6
Z9 6
U1 1
U2 13
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0005-1098
EI 1873-2836
J9 AUTOMATICA
JI Automatica
PD DEC
PY 2014
VL 50
IS 12
BP 2987
EP 2997
DI 10.1016/j.automatica.2014.10.025
PG 11
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA AY7SW
UT WOS:000347760100003
ER
PT J
AU Pearman, DW
Herbers, THC
Janssen, TT
van Ettinger, HD
McIntyre, SA
Jessen, PF
AF Pearman, D. W.
Herbers, T. H. C.
Janssen, T. T.
van Ettinger, H. D.
McIntyre, S. A.
Jessen, P. F.
TI Drifter observations of the effects of shoals and tidal-currents on wave
evolution in San Francisco Bight
SO CONTINENTAL SHELF RESEARCH
LA English
DT Article
DE Drifting buoy; Wave-current interaction; Tidal inlet; GPS-accelerometer
buoy; Non-stationary time series; Inhomogeneous wave field
ID SHALLOW-WATER; BUOY; DISSIPATION; SPECTRUM; DEEP
AB Detailed observations of wave evolution and wave-current interaction in tidal inlets and river mouths are practically non-existent. This is in part due to the practical difficulty of installing and maintaining fixed instruments in this harsh environment with large waves, strong currents, dynamic seabed morphology, and often busy ship traffic, but also due to the fact that it is difficult to resolve the spatial variability and evolution of the wave and current field from an array of point measurements. This work explores the use of newly developed small, free-drifting buoys to collect wave and current measurements in a coastal inlet. The instruments, referred to as wave-resolving drifters (or WRD), are small and lightweight enough so that they can be deployed and retrieved from small vessels, and relatively inexpensive so that large numbers can be used. The surface-following drifters resolve the three-dimensional wave orbital motion and surface current field by combining GPS and accelerometer measurements. We validate the WRD platform and its sensor package in open ocean conditions in Monterey Bay by comparing the WRD observations to observations made by a collocated 40 cm-diameter Datawell Waverider buoy. To study wave evolution in the San Francisco Bight, 30 WRDs are deployed near the San Francisco Bay entrance (Golden Gate) during peak ebb tide so that the drifters flow out of the bay, and into the incident wave field. Wave statistics are estimated through local ensemble averaging of drifter observations, and ensemble-averaged wave spectra are used to capture the wave evolution through the inlet area. Comparisons with numerical simulations of the simulating waves near shore (SWAN) model help identify the various processes acting on different frequency ranges of the wave field, and ray diagrams show the distinct effects of refraction by variable depth on the lower-frequency swells and refraction by currents on the higher-frequency wind waves. This combined analysis demonstrates the potential of using relatively inexpensive surface-following drifters to investigate surface dynamics in a complicated and energetic coastal inlet. Published by Elsevier Ltd.
C1 [Pearman, D. W.; Herbers, T. H. C.; McIntyre, S. A.; Jessen, P. F.] Naval Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA.
[Herbers, T. H. C.; Janssen, T. T.; van Ettinger, H. D.] Theiss Res, El Granada, CA 94018 USA.
RP Pearman, DW (reprint author), Naval Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA.
EM dwpearma@nps.edu
FU Office of Naval Research (Littoral Geosciences and Optics Program and
Physical Oceanography Program)
FX This research is supported by the Office of Naval Research (Littoral
Geosciences and Optics Program and Physical Oceanography Program). The
captains and crews of the RN POINT SUR and the RN QUESTUARY provided
excellent support and demonstrated amazing levels of flexibility in the
field experiments.
NR 29
TC 3
Z9 3
U1 2
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0278-4343
EI 1873-6955
J9 CONT SHELF RES
JI Cont. Shelf Res.
PD DEC 1
PY 2014
VL 91
BP 109
EP 119
DI 10.1016/j.csr.2014.08.011
PG 11
WC Oceanography
SC Oceanography
GA AY5HR
UT WOS:000347603900009
ER
PT J
AU McCarrick, H
Flanigan, D
Jones, G
Johnson, BR
Ade, P
Araujo, D
Bradford, K
Cantor, R
Che, G
Day, P
Doyle, S
Leduc, H
Limon, M
Luu, V
Mauskopf, P
Miller, A
Mroczkowski, T
Tucker, C
Zmuidzinas, J
AF McCarrick, H.
Flanigan, D.
Jones, G.
Johnson, B. R.
Ade, P.
Araujo, D.
Bradford, K.
Cantor, R.
Che, G.
Day, P.
Doyle, S.
Leduc, H.
Limon, M.
Luu, V.
Mauskopf, P.
Miller, A.
Mroczkowski, T.
Tucker, C.
Zmuidzinas, J.
TI Horn-coupled, commercially-fabricated aluminum lumped-element kinetic
inductance detectors for millimeter wavelengths
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID NOISE; SUPERCONDUCTOR; PERFORMANCE; DESIGN; SYSTEM
AB We discuss the design, fabrication, and testing of prototype horn-coupled, lumped-element kinetic inductance detectors (LEKIDs) designed for cosmic microwave background studies. The LEKIDs are made from a thin aluminum film deposited on a silicon wafer and patterned using standard photolithographic techniques at STAR Cryoelectronics, a commercial device foundry. We fabricated 20-element arrays, optimized for a spectral band centered on 150 GHz, to test the sensitivity and yield of the devices as well as the multiplexing scheme. We characterized the detectors in two configurations. First, the detectors were tested in a dark environment with the horn apertures covered, and second, the horn apertures were pointed towards a beam-filling cryogenic blackbody load. These tests show that the multiplexing scheme is robust and scalable, the yield across multiple LEKID arrays is 91%, and the measured noise-equivalent temperatures for a 4 K optical load are in the range 26 +/- 6 mu K root s. (C) 2014 AIP Publishing LLC.
C1 [McCarrick, H.; Flanigan, D.; Jones, G.; Johnson, B. R.; Araujo, D.; Limon, M.; Luu, V.; Miller, A.] Columbia Univ, Dept Phys, New York, NY 10025 USA.
[Ade, P.; Doyle, S.; Mauskopf, P.; Tucker, C.] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales.
[Bradford, K.; Che, G.] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
[Cantor, R.] STAR Cryoelect, Santa Fe, NM 87508 USA.
[Day, P.; Leduc, H.; Zmuidzinas, J.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Mauskopf, P.] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
[Mauskopf, P.] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
[Mroczkowski, T.] Naval Res Lab, Washington, DC 20375 USA.
[Zmuidzinas, J.] CALTECH, Dept Phys, Pasadena, CA 91125 USA.
RP McCarrick, H (reprint author), Columbia Univ, Dept Phys, New York, NY 10025 USA.
EM hlm2124@columbia.edu
OI Limon, Michele/0000-0002-5900-2698; Mroczkowski,
Tony/0000-0003-3816-5372
FU Research Initiatives for Science and Engineering (RISE) program at
Columbia University; internal Columbia University funding
FX This LEKID research is supported by a grant from the Research
Initiatives for Science and Engineering (RISE) program at Columbia
University to B.R.J., and by internal Columbia University funding to
A.M. Matthew Underhill at the Micromachining Laboratory at Arizona State
University machined the aluminum module with horns used for the
measurements reported here. We thank the Xilinx University Program for
their generous donation of FPGA hardware and software tools used in the
readout system. We also thank the anonymous reviewer for helpful
comments. This research has made use of NASA's Astrophysics Data System.
NR 44
TC 9
Z9 9
U1 0
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2014
VL 85
IS 12
AR 123117
DI 10.1063/1.4903855
PG 16
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA AX8OL
UT WOS:000347168500019
PM 25554282
ER
PT J
AU Barnard, L
Scott, C
Owens, M
Lockwood, M
Tucker-Hood, K
Thomas, S
Crothers, S
Davies, JA
Harrison, R
Lintott, C
Simpson, R
O'Donnell, J
Smith, AM
Waterson, N
Bamford, S
Romeo, F
Kukula, M
Owens, B
Savani, N
Wilkinson, J
Baeten, E
Poeffel, L
Harder, B
AF Barnard, L.
Scott, C.
Owens, M.
Lockwood, M.
Tucker-Hood, K.
Thomas, S.
Crothers, S.
Davies, J. A.
Harrison, R.
Lintott, C.
Simpson, R.
O'Donnell, J.
Smith, A. M.
Waterson, N.
Bamford, S.
Romeo, F.
Kukula, M.
Owens, B.
Savani, N.
Wilkinson, J.
Baeten, E.
Poeffel, L.
Harder, B.
TI The Solar Stormwatch CME catalogue: Results from the first space weather
citizen science project
SO SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
LA English
DT Article
DE CMEs; citizen science; STEREO
ID CORONAL MASS EJECTIONS; AUTOMATIC DETECTION; 1 AU; TRACKING; SUN;
IMAGES; LASCO; EARTH; WIND
AB Solar Stormwatch was the first space weather citizen science project, the aim of which is to identify and track coronal mass ejections (CMEs) observed by the Heliospheric Imagers aboard the STEREO satellites. The project has now been running for approximately 4 years, with input from >16,000 citizen scientists, resulting in a data set of >38,000time-elongation profiles of CME trajectories, observed over 18 preselected position angles. We present our method for reducing this data set into a CME catalogue. The resulting catalogue consists of 144 CMEs over the period January 2007 to February 2010, of which 110 were observed by STEREO-A and 77 were observed by STEREO-B. For each CME, the time-elongation profiles generated by the citizen scientists are averaged into a consensus profile along each position angle that the event was tracked. We consider this catalogue to be unique, being at present the only citizen science-generated CME catalogue, tracking CMEs over an elongation range of 4 degrees out to a maximum of approximately 70 degrees. Using single spacecraft fitting techniques, we estimate the speed, direction, solar source region, and latitudinal width of each CME. This shows that at present, the Solar Stormwatch catalogue (which covers only solar minimum years) contains almost exclusively slow CMEs, with a mean speed of approximately 350 km s(-1). The full catalogue is available for public access at . This includes, for each event, the unprocessed time-elongation profiles generated by Solar Stormwatch, the consensus time-elongation profiles, and a set of summary plots, as well as the estimated CME properties.
C1 [Barnard, L.; Scott, C.; Owens, M.; Lockwood, M.; Tucker-Hood, K.; Thomas, S.] Univ Reading, Dept Meteorol, Reading, Berks, England.
[Crothers, S.; Davies, J. A.; Harrison, R.] Rutherford Appleton Lab, RAL Space, Chilton, England.
[Lintott, C.; Simpson, R.; O'Donnell, J.] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England.
[Smith, A. M.] GitHub Inc, San Francisco, CA USA.
[Waterson, N.] Natl Maritime Museum, Greenwich, England.
[Bamford, S.] Univ Nottingham, Ctr Astron & Particle Theory, Nottingham NG7 2RD, Notts, England.
[Romeo, F.; Kukula, M.; Owens, B.] Royal Museums Greenwich, Royal Greenwich Observ, London, England.
[Savani, N.] Naval Res Lab, Washington, DC USA.
[Wilkinson, J.; Baeten, E.; Poeffel, L.; Harder, B.] Univ Oxford, Dept Astrophys, Zooniverse, Oxford OX1 3RH, England.
RP Barnard, L (reprint author), Univ Reading, Dept Meteorol, Reading, Berks, England.
EM l.a.barnard@reading.ac.uk
RI Owens, Mathew/B-3006-2010; Lockwood, Mike/G-1030-2011; Barnard,
Luke/L-2930-2015; Scott, Christopher/H-8664-2012; Bamford,
Steven/E-8702-2010;
OI Owens, Mathew/0000-0003-2061-2453; Lockwood, Mike/0000-0002-7397-2172;
Barnard, Luke/0000-0001-9876-4612; Scott,
Christopher/0000-0001-6411-5649; Bamford, Steven/0000-0001-7821-7195;
O'Donnell, James/0000-0002-4610-2526; Thomas, Simon/0000-0001-6762-8247;
Smith, Arfon/0000-0002-3957-2474
FU UK's Natural Environmental Research Council (NERC) [NE/J024678/1]
FX The Solar Stormwatch CME catalogue and the raw Solar Stormwatch data
used in its construction are available to download at
www.met.reading.ac.uk/similar to spate/solarstormwatch. The STEREO/HI
data are available for download from
http://www.ukssdc.rl.ac.uk/solar/stereo/data.html. We thank the UK's
Natural Environmental Research Council (NERC) for support under grant
NE/J024678/1. Solar Stormwatch is a joint project between the Royal
Observatory Greenwich, the Rutherford Appleton Laboratory Space
division, the Zooniverse team, and the University of Reading. STEREO is
the third mission in NASA's Solar Terrestrial Probes program. STEREO/HI
was developed by a consortium comprising RAL, the University of
Birmingham (UK), CSL (Belgium), and NRL (USA). This publication has been
made possible by the participation of more than 16,000 volunteers in the
Solar Stormwatch project (http://www.solarstormwatch.com/authors). This
publication has been made possible by the participation of more than
16,000 volunteers in the Solar Stormwatch project
(http://www.solarstormwatch.com/authors).
NR 42
TC 6
Z9 6
U1 0
U2 14
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1542-7390
J9 SPACE WEATHER
JI Space Weather
PD DEC
PY 2014
VL 12
IS 12
BP 657
EP 674
DI 10.1002/2014SW001119
PG 18
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
GA AZ1ZO
UT WOS:000348034100002
ER
PT J
AU Murphy, RJ
Kozlovsky, B
Share, GH
AF Murphy, R. J.
Kozlovsky, B.
Share, G. H.
TI RADIOACTIVE POSITRON EMITTER PRODUCTION BY ENERGETIC ALPHA PARTICLES IN
SOLAR FLARES
SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
LA English
DT Article
DE interplanetary medium; Sun: activity; Sun: chromosphere; Sun: flares;
Sun: particle emission; Sun: X-rays; gamma rays
ID GAMMA-RAY SPECTROSCOPY; PARTIAL CROSS-SECTIONS; EXCITATION-FUNCTIONS;
ANNIHILATION RADIATION; CORONAL ABUNDANCES; NUCLEAR-REACTIONS; NEUTRON
EMISSION; X-RAY; O-16; TARGETS
AB Measurements of the 0.511MeV positron-annihilation line from solar flares are used to explore the flare process in general and ion acceleration in particular. In flares, positrons are produced primarily by the decay of radioactive positron-emitting isotopes resulting from nuclear interactions of flare-accelerated ions with ambient solar material. Kozlovsky et al. provided ion-energy-dependent production cross sections for 67 positron emitters evaluated from their threshold energies (some <1 MeV nucleon(-1)) to a GeV nucleon(-1), incorporating them into a computer code for calculating positron-emitter production. Adequate cross-section measurements were available for proton reactions, but not for alpha-particle reactions where only crude estimates were possible. Here we re-evaluate the alpha-particle cross sections using new measurements and nuclear reaction codes. In typical large gamma-ray line flares, proton reactions dominate positron production, but alpha-particle reactions will dominate for steeper accelerated-ion spectra because of their relatively low threshold energies. With the accelerated-He-3 reactions added previously, the code is now reliable for calculating positron production from any distribution of accelerated-ion energies, not just those of typical flares. We have made the code available in the online version of the Journal. We investigate which reactions, projectiles, and ion energies contribute to positron production. We calculate ratios of the annihilation-line fluence to fluences of other gamma-ray lines. Such ratios can be used in interpreting flare data and in determining which nuclear radiation is most sensitive for revealing acceleration of low-energy ions at the Sun.
C1 [Murphy, R. J.] US Navy, Res Lab, Washington, DC 20375 USA.
[Kozlovsky, B.] Tel Aviv Univ, IL-69978 Tel Aviv, Israel.
[Share, G. H.] Univ Maryland, College Pk, MD 20742 USA.
RP Murphy, RJ (reprint author), US Navy, Res Lab, Code 7650, Washington, DC 20375 USA.
EM murphy@ssd5.nrl.navy.mil; benz@wise.tau.ac.il; share@astro.umd.edu
FU NASA [NNH13AV36]; Chief of Naval Research; Israeli Science Foundation
FX We thank the anonymous reviewer for careful reading of the manuscript
and for comments and suggestions that considerably improved the paper.
We also acknowledge A. J. Koning for development of the nuclear reaction
code TALYS, his help in using the code, and his willingness to answer
questions concerning nuclear physics. This work was supported by NASA
grant NNH13AV36 and the Chief of Naval Research. B. Kozlovsky
acknowledges the Israeli Science Foundation for support.
NR 60
TC 2
Z9 2
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0067-0049
EI 1538-4365
J9 ASTROPHYS J SUPPL S
JI Astrophys. J. Suppl. Ser.
PD DEC
PY 2014
VL 215
IS 2
AR 18
DI 10.1088/0067-0049/215/2/18
PG 23
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AY4IX
UT WOS:000347542500003
ER
PT J
AU Cellini, SR
Chaudhary, L
AF Cellini, Stephanie Riegg
Chaudhary, Latika
TI The labor market returns to a for-profit college education
SO ECONOMICS OF EDUCATION REVIEW
LA English
DT Article
DE Returns to education; For-profit colleges; NLSY; Earnings
ID COMMUNITY-COLLEGE; TRAINING-PROGRAMS; EARNINGS; BENEFITS; STUDENTS;
2-YEAR; IMPACT
AB A lengthy literature estimating the returns to education has largely ignored the for-profit sector. In this paper, we estimate the earnings gains to for-profit college attendance using restricted-access data from the 1997 National Longitudinal Survey of Youth (NLSY97). Using an individual fixed effects estimation strategy that allows us to control for time-invariant unobservable characteristics of students, we find that students who enroll in associate's degree programs in for-profit colleges experience earnings gains of about 10% relative to high school graduates with no college degree, conditional on employment. Since associate's degree students attend for an average of 2.6 years, this translates to a 4% return per year of education in a for-profit college, slightly lower than estimates of returns for other sectors found in the literature. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Cellini, Stephanie Riegg] George Washington Univ, Trachtenberg Sch Publ Policy & Publ Adm, Washington, DC 20052 USA.
[Cellini, Stephanie Riegg] NBER, Cambridge, MA 02138 USA.
[Chaudhary, Latika] Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA USA.
RP Cellini, SR (reprint author), George Washington Univ, Trachtenberg Sch Publ Policy & Publ Adm, 805 21st St NW,601, Washington, DC 20052 USA.
EM scellini@gwu.edu; lhartman@nps.edu
NR 48
TC 8
Z9 8
U1 1
U2 13
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0272-7757
EI 1873-7382
J9 ECON EDUC REV
JI Econ. Educ. Rev.
PD DEC
PY 2014
VL 43
BP 125
EP 140
DI 10.1016/j.econedurev.2014.10.001
PG 16
WC Economics; Education & Educational Research
SC Business & Economics; Education & Educational Research
GA AY3PO
UT WOS:000347495500009
ER
PT J
AU Renk, TJ
Harper-Slaboszewicz, V
Mikkelson, KA
Ginn, WC
Ottinger, PF
Schumer, JW
AF Renk, T. J.
Harper-Slaboszewicz, V.
Mikkelson, K. A.
Ginn, W. C.
Ottinger, P. F.
Schumer, J. W.
TI Use of a radial self-field diode geometry for intense pulsed ion beam
generation at 6 MeV on Hermes III
SO PHYSICS OF PLASMAS
LA English
DT Article
ID INSULATED ELECTRON FLOW; IN-CELL SIMULATIONS; ROD-PINCH DIODE; AURORA
PULSER; IMPEDANCE; PLASMA; ACCELERATORS; POLARITY; FUSION; VACUUM
AB We investigate the generation of intense pulsed focused ion beams at the 6 MeV level using an inductive voltage adder (IVA) pulsed-power generator, which employs a magnetically insulated transmission line (MITL). Such IVA machines typical run at an impedance of few tens of Ohms. Previous successful intense ion beam generation experiments have often featured an "axial" pinch-reflex ion diode (i.e., with an axial anode-cathode gap) and operated on a conventional Marx generator/water line driver with an impedance of a few Ohms and no need for an MITL. The goals of these experiments are to develop a pinch-reflex ion diode geometry that has an impedance to efficiently match to an IVA, produces a reasonably high ion current fraction, captures the vacuum electron current flowing forward in the MITL, and focuses the resulting ion beam to small spot size. A new "radial" pinch-reflex ion diode (i.e., with a radial anode-cathode gap) is found to best demonstrate these properties. Operation in both positive and negative polarities was undertaken, although the negative polarity experiments are emphasized. Particle-in-cell (PIC) simulations are consistent with experimental results indicating that, for diode impedances less than the self-limited impedance of the MITL, almost all of the forward-going IVA vacuum electron flow current is incorporated into the diode current. PIC results also provide understanding of the diode-impedance and ion-focusing properties of the diode. In addition, a substantial high-energy ion population is also identified propagating in the "reverse" direction, i.e., from the back side of the anode foil in the electron beam dump. (C) 2014 AIP Publishing LLC.
C1 [Renk, T. J.; Harper-Slaboszewicz, V.; Mikkelson, K. A.; Ginn, W. C.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Ottinger, P. F.] ENGILITY, Chantilly, VA 20151 USA.
[Schumer, J. W.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Renk, TJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM tjrenk@sandia.gov
OI Harper-Slaboszewicz, Victor/0000-0001-9518-9253; Ottinger,
Paul/0000-0001-9901-7379
FU Laboratory Directed Research and Development program at Sandia National
Laboratories; U.S. Department of Energy, National Nuclear Security
Administration [DE-AC04-94AL85000]
FX The authors acknowledge the technical support of the Hermes facility
staff-Gary Tilley, Chris Kirtley, and J. J. Montoya. The authors also
acknowledge fruitful technical discussions with Dr. Steve Rosenthal and
Dr. Bryan Oliver. This work was supported by the Laboratory Directed
Research and Development program at Sandia National Laboratories, a
multi-program laboratory managed and operated by Sandia Corporation, a
wholly owned subsidiary of Lockheed Martin Company, for the U.S.
Department of Energy, National Nuclear Security Administration under
Contract No. DE-AC04-94AL85000.
NR 49
TC 3
Z9 3
U1 3
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2014
VL 21
IS 12
AR 123114
DI 10.1063/1.4903947
PG 17
WC Physics, Fluids & Plasmas
SC Physics
GA AX8ME
UT WOS:000347162700084
ER
PT J
AU Wang, YM
AF Wang, Y. -M.
TI Solar Cycle Variation of the Sun's Low-Order Magnetic Multipoles:
Heliospheric Consequences
SO SPACE SCIENCE REVIEWS
LA English
DT Review
DE Solar cycle; Low-order magnetic multipoles; Interplanetary magnetic
field; Heliospheric current sheet
ID COSMIC-RAY MODULATION; DIFFERENTIAL ROTATION; CORONAL ROTATION;
GEOMAGNETIC-ACTIVITY; LASCO OBSERVATIONS; BASHFUL BALLERINA; MAUNDER
MINIMUM; CURRENT SHEET; TILT ANGLES; FIELD
AB The Sun's dipole and quadrupole components play a central role in the solar cycle evolution of the interplanetary magnetic field (IMF). The long-term variation of the radial IMF component approximately tracks that of the total dipole moment, with additional contributions coming near sunspot maximum from the quadrupole moment and from CMEs. The axial and equatorial components of the dipole vary out of phase with each other over the solar cycle. The equatorial dipole, whose photospheric sources are subject to rotational shearing, decays on a timescale of similar to 1 yr and must be continually regenerated by new sunspot activity; its fluctuating strength depends not only on the activity level, but also on the longitudinal phase relationships among the active regions. During cycles 21-23, the equatorial dipole and IMF reached their peak strength similar to 2 yrs after sunspot maximum; conversely, large dips or "Gnevyshev gaps" occurred when active regions emerged longitudinally out of phase with each other. The Be-10-inferred phase shift in the IMF variation during the Maunder Minimum may be explained by a decrease in the amplitude of the equatorial dipole relative to the axial dipole, due either to a systematic weakening of the emerging bipoles or to an increase in their tilt angles. In mid-2012, during the polarity reversal of cycle 24, the nonaxisymmetric quadrupole component became so dominant that the heliospheric current sheet (HCS) split into two cylindrical components. Hemispheric asymmetries in sunspot activity give rise to an axisymmetric quadrupole component, which has combined with the axial dipole to produce a systematic southward displacement of the HCS since cycle 20.
C1 Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Wang, YM (reprint author), Naval Res Lab, Div Space Sci, Code 7682W, Washington, DC 20375 USA.
EM yi.wang@nrl.navy.mil
FU NASA; Office of Naval Research
FX I am grateful to A. Balogh for the opportunity to participate in the
International Space Science Institute (ISSI) Workshop on "The Solar
Activity Cycle: Physical Causes and Consequences," held in November
2013. This work was supported by NASA and the Office of Naval Research.
NR 54
TC 0
Z9 0
U1 4
U2 8
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-6308
EI 1572-9672
J9 SPACE SCI REV
JI Space Sci. Rev.
PD DEC
PY 2014
VL 186
IS 1-4
BP 387
EP 407
DI 10.1007/s11214-014-0051-9
PG 21
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AY2HO
UT WOS:000347409800013
ER
PT J
AU Tsoi, S
Dev, P
Friedman, AL
Stine, R
Robinson, JT
Reinecke, TL
Sheehan, PE
AF Tsoi, Stanislav
Dev, Pratibha
Friedman, Adam L.
Stine, Rory
Robinson, Jeremy T.
Reinecke, Thomas L.
Sheehan, Paul E.
TI van der Waals Screening by Single-Layer Graphene and Molybdenum
Disulfide
SO ACS NANO
LA English
DT Article
DE graphene; van der Waals interactions; screening; atomic force microscopy
ID MEMBRANES; ADHESION
AB A sharp tip of atomic force microscope is employed to probe van der Waals forces of a silicon oxide substrate with adhered graphene. Experimental results obtained in the range of distances from 3 to 20 nm indicate that single-, double-,and triple-layer graphenes screen the van der Waals forces of the substrate. Fluorination of graphene, which makes it electrically insulating, lifts the screening in the single-layer graphene. The van der Waals force from graphene determined per layer decreases with the number of layers. In addition, increased hole doping of graphene increases the force. Finally, we also demonstrate screening of the van der Waals forces of the silicon oxide substrate by single- and double-layer molybdenum disulfide.
C1 [Tsoi, Stanislav; Sheehan, Paul E.] US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
[Dev, Pratibha; Robinson, Jeremy T.; Reinecke, Thomas L.] US Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
[Friedman, Adam L.] US Naval Res Lab, Div Mat, Washington, DC 20375 USA.
RP Tsoi, S (reprint author), US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
EM stanislav.tsoi@nrl.navy.mil
RI Stine, Rory/C-6709-2013; Friedman, Adam/D-9610-2011; Sheehan,
Paul/B-4793-2010
OI Friedman, Adam/0000-0003-0597-5432; Sheehan, Paul/0000-0003-2668-4124
FU Naval Research Laboratory Base Program; National Research Council
through a National Research Council Fellowship
FX This work was supported by the Naval Research Laboratory Base Program.
P.D. appreciates the support of the National Research Council through a
National Research Council Fellowship. We thank Mr. David Zapotok for his
assistance with fabrication procedures.
NR 30
TC 8
Z9 8
U1 5
U2 64
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD DEC
PY 2014
VL 8
IS 12
BP 12410
EP 12417
DI 10.1021/nn5050905
PG 8
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA AX8CL
UT WOS:000347138000053
PM 25412420
ER
PT J
AU Guild, MD
Garcia-Chocano, VM
Kan, WW
Sanchez-Dehesa, J
AF Guild, Matthew D.
Garcia-Chocano, Victor M.
Kan, Weiwei
Sanchez-Dehesa, Jose
TI Enhanced inertia from lossy effective fluids using multi-scale sonic
crystals
SO AIP ADVANCES
LA English
DT Article; Proceedings Paper
CT 2nd International Conference on Phononic Crystals/Metamaterials, Phonon
Transport and Optomechanics
CY JUN 02-07, 2013
CL Amer Inst Phys, Sharm El-Sheikh, EGYPT
HO Amer Inst Phys
ID BAND-STRUCTURE; CYLINDERS; DENSITY; SOUND
AB In this work, a recent theoretically predicted phenomenon of enhanced permittivity with electromagnetic waves using lossy materials is investigated for the analogous case of mass density and acoustic waves, which represents inertial enhancement. Starting from fundamental relationships for the homogenized quasi-static effective density of a fluid host with fluid inclusions, theoretical expressions are developed for the conditions on the real and imaginary parts of the constitutive fluids to have inertial enhancement, which are verified with numerical simulations. Realizable structures are designed to demonstrate this phenomenon using multi-scale sonic crystals, which are fabricated using a 3D printer and tested in an acoustic impedance tube, yielding good agreement with the theoretical predictions and demonstrating enhanced inertia. (C) 2014 Author(s).
C1 [Guild, Matthew D.; Garcia-Chocano, Victor M.; Kan, Weiwei; Sanchez-Dehesa, Jose] Univ Politecn Valencia, Dept Ingn Elect, Grp Fenomenos Ondulatorios, E-46022 Valencia, Spain.
[Kan, Weiwei] Nanjing Univ, Inst Acoust, Dept Phys, Key Lab Modern Acoust,MOE, Nanjing 210093, Jiangsu, Peoples R China.
RP Guild, MD (reprint author), US Naval Res Lab, NRC Postdoctoral Res Associateship Program, Washington, DC 20375 USA.
EM mdguild@utexas.edu; jsdehesa@upv.es
FU U.S. Office of Naval Research [N000141210216]
FX This work was supported by the U.S. Office of Naval Research (Award
N000141210216).
NR 30
TC 6
Z9 6
U1 1
U2 14
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 2158-3226
J9 AIP ADV
JI AIP Adv.
PD DEC
PY 2014
VL 4
IS 12
AR 124302
DI 10.1063/1.4901880
PG 12
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA AX8PC
UT WOS:000347170100016
ER
PT J
AU Ruppalt, LB
Cleveland, ER
Champlain, JG
Bennett, BR
Prokes, SM
AF Ruppalt, Laura B.
Cleveland, Erin R.
Champlain, James G.
Bennett, Brian R.
Prokes, Sharka M.
TI Integration of atomic layer deposited high-k dielectrics on GaSb via
hydrogen plasma exposure
SO AIP ADVANCES
LA English
DT Article
ID MOS CAPACITORS; ANTIMONIDE; PERFORMANCE; INTERFACE; MOBILITY;
CONDUCTANCE; PASSIVATION; COMPOUND; DENSITY; MOSFETS
AB In this letter we report the efficacy of a hydrogen plasma pretreatment for integrating atomic layer deposited (ALD) high-k dielectric stacks with device-quality p-type GaSb(001) epitaxial layers. Molecular beam eptiaxy-grown GaSb surfaces were subjected to a 30 minute H-2/Ar plasma treatment and subsequently removed to air. Highk HfO2 and Al2O3/HfO2 bilayer insulating films were then deposited via ALD and samples were processed into standard metal-oxide-semiconductor (MOS) capacitors. The quality of the semiconductor/dielectric interface was probed by current-voltage and variable-frequency admittance measurements. Measurement results indicate that the H-2-plamsa pretreatment leads to a low density of interface states nearly independent of the deposited dielectric material, suggesting that pre-deposition H-2-plasma exposure, coupled with ALD of high-k dielectrics, may provide an effective means for achieving high-quality GaSb MOS structures for advanced Sb-based digital and analog electronics. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
C1 [Ruppalt, Laura B.; Cleveland, Erin R.; Champlain, James G.; Bennett, Brian R.; Prokes, Sharka M.] Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
RP Ruppalt, LB (reprint author), Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
EM laura.ruppalt@nrl.navy.mil
RI Bennett, Brian/A-8850-2008
OI Bennett, Brian/0000-0002-2437-4213
FU Office of Naval Research
FX This work was supported by the Office of Naval Research. The authors
thank Doewon Park and Connie Kornegay for their contributions to device
fabrication.
NR 34
TC 3
Z9 3
U1 0
U2 26
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 2158-3226
J9 AIP ADV
JI AIP Adv.
PD DEC
PY 2014
VL 4
IS 12
DI 10.1063/1.4905452
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA AX8PC
UT WOS:000347170100084
ER
PT J
AU Abele, TA
Besachio, DA
Quigley, EP
Gurgel, RK
Shelton, C
Harnsberger, HR
Wiggins, RH
AF Abele, T. A.
Besachio, D. A.
Quigley, E. P.
Gurgel, R. K.
Shelton, C.
Harnsberger, H. R.
Wiggins, R. H., III
TI Diagnostic Accuracy of Screening MR Imaging Using Unenhanced Axial CISS
and Coronal T2WI for Detection of Small Internal Auditory Canal Lesions
SO AMERICAN JOURNAL OF NEURORADIOLOGY
LA English
DT Article
ID FAST SPIN-ECHO; SENSORINEURAL HEARING-LOSS; ACOUSTIC NEUROMA;
CONSTRUCTIVE INTERFERENCE; SCHWANNOMA; SEQUENCE; OUTCOMES; NERVE
AB BACKGROUND AND PURPOSE: While enhanced TIWI is considered the "gold standard" for detection of internal auditory canal pathology, unenhanced fluid-sensitive sequences have shown high sensitivity for lesion identification. Our purpose was to evaluate the diagnostic accuracy of an unenhanced MR imaging protocol using axial CISS and coronal T2WI for detection of small (10 mm or less) internal auditory canal lesions.
MATERIALS AND METHODS: Twenty-three patients with small internal auditory canal lesions and 13 patients without lesions who had undergone MR imaging using the screening protocol and confirmatory gadolinium-enhanced thin section T1WI were identified. Two blinded neuroradiologists retrospectively evaluated all examinations using 1) only axial CISS, 2) only corona! T2WI, and 3) axial and coronal sequences together. Accuracy, specificity, sensitivity, and interobserver agreement were assessed.
RESULTS: Median maximum lesion dimension was 4 mm (range, 2-10 mm). Accuracy, specificity, and sensitivity for axial CISS alone were 0.94, 0.96, and 0.91 for observer 1 and 0.94, 0.92, and 1.00 for observer 2. The data for the coronal T2WI sequence only were 0.94, 0.96, and 0.91 for observer 1, and 0.99,1.00, and 0.96 for observer 2. Using axial and coronal sequences, the data were 0.97, 0.96, and 1.00 for observer 1, and 0.99, 0.98, and 1.00 for observer 2. kappa coefficients were 0.84 for the axial sequence only, 0.90 for corona' only, and 0.91 for axial and coronal both.
CONCLUSIONS: Screening noncontrast MR imaging using a combination of axial CISS and coronal T2WI sequences can detect small internal auditory canal lesions with 100% sensitivity and excellent interobserver agreement.
C1 [Abele, T. A.; Quigley, E. P.; Harnsberger, H. R.; Wiggins, R. H., III] Univ Utah, Dept Radiol, Salt Lake City, UT 84132 USA.
[Wiggins, R. H., III] Univ Utah, Dept Biomed Informat, Salt Lake City, UT 84132 USA.
[Gurgel, R. K.; Shelton, C.; Wiggins, R. H., III] Univ Utah, Div Otolaryngol Head & Neck Surg, Salt Lake City, UT 84132 USA.
[Besachio, D. A.] Naval Med Ctr Portsmouth, Dept Radiol, Portsmouth, VA USA.
RP Abele, TA (reprint author), Univ Utah, Dept Radiol, 30 North 1900 East 1A071, Salt Lake City, UT 84132 USA.
EM travis.abele@hsc.utah.edu
NR 21
TC 1
Z9 1
U1 2
U2 3
PU AMER SOC NEURORADIOLOGY
PI DENVILLE
PA PO BOX 3000, DENVILLE, NJ 07834-9349 USA
SN 0195-6108
EI 1936-959X
J9 AM J NEURORADIOL
JI Am. J. Neuroradiol.
PD DEC
PY 2014
VL 35
IS 12
BP 2366
EP 2370
DI 10.3174/ajnr.A4041
PG 5
WC Clinical Neurology; Neuroimaging; Radiology, Nuclear Medicine & Medical
Imaging
SC Neurosciences & Neurology; Radiology, Nuclear Medicine & Medical Imaging
GA AX1EI
UT WOS:000346690500025
PM 25034778
ER
PT J
AU Kim, T
Lee, J
Fredriksson, DW
Decew, J
Drach, A
Moon, K
AF Kim, Taeho
Lee, Jihoon
Fredriksson, David W.
DeCew, Judson
Drach, Andrew
Moon, Kiyoung
TI Engineering analysis of a submersible abalone aquaculture cage system
for deployment in exposed marine environments
SO AQUACULTURAL ENGINEERING
LA English
DT Article
DE CFD; Flow; Finite element modeling; Abalone cage; Structural analysis;
Mooring system tensions
ID NUMERICAL MODELING TECHNIQUES; FISH CAGE; COEFFICIENTS; REPLACEMENT;
MEAL; AIR
AB Great potential may exist in the development of abalone aquaculture in underutilized, exposed marine environments. Abalone is a shellfish that feeds on kelp and as a product, can often render high market value. In this study, the development of a commercial-size, submersible abalone cage grow-out system with a modular box structure is described. The flow field characteristics within the abalone containment structure were analyzed with computational fluid dynamic software. The hydrodynamic response of the moored containment structure was investigated with a Morison equation type finite element model that simulates fluid-structure interaction. Environmental forcing input to the model consisted of loading conditions representing combinations of currents with a magnitude of 1.0 m/s and irregular seas with a significant wave height of 8.01 m and peak period of 12.52 s. Simulations were performed with the abalone cage model in both surface and submerged configurations. From the simulations, the attachment loads were determined and used in a structural model to calculate local stresses. Structural analysis of the deployment and recovery operation was also investigated. The results indicate the importance of including a combination of detailed structural/hydrodynamic/flow analyses into the design framework to avoid catastrophic failures of abalone farming systems. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Kim, Taeho; Lee, Jihoon] Chonnam Natl Univ, Div Marine Technol, Yeosu 550749, South Korea.
[Fredriksson, David W.] US Naval Acad, Dept Naval Architecture & Ocean Engn, Annapolis, MD 21402 USA.
[DeCew, Judson] Univ New Hampshire, Ctr Ocean Engn, Durham, NH 03824 USA.
[Drach, Andrew] Univ Texas Austin, Inst Computat Engn & Sci, Austin, TX 78712 USA.
[Moon, Kiyoung] Yonsei Univ, Dept Computat Sci & Engn, Seoul 120749, South Korea.
RP Kim, T (reprint author), Chonnam Natl Univ, Div Marine Technol, Yeosu 550749, South Korea.
EM kimth@jnu.ac.kr; jihoon.lee@jnu.ac.kr
OI Kim, Taeho/0000-0001-5043-5828; Drach, Andrew/0000-0003-4211-1254
FU Fishery Commercialization Technology Development Program, Ministry of
Ocean and Fisheries, Republic of Korea [112091-2]
FX This research was supported by Fishery Commercialization Technology
Development Program, (112091-2) Ministry of Ocean and Fisheries,
Republic of Korea.
NR 29
TC 3
Z9 3
U1 1
U2 17
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0144-8609
EI 1873-5614
J9 AQUACULT ENG
JI Aquac. Eng.
PD DEC
PY 2014
VL 63
BP 72
EP 88
DI 10.1016/j.aquaeng.2014.10.006
PG 17
WC Agricultural Engineering; Fisheries
SC Agriculture; Fisheries
GA AX7ZH
UT WOS:000347129600010
ER
PT J
AU Drikas, ZB
Gil, JG
Hong, SK
Andreadis, TD
Yeh, JH
Taddese, BT
Anlage, SM
AF Drikas, Zachary B.
Gil, Jesus Gil
Hong, Sun K.
Andreadis, Tim D.
Yeh, Jen-Hao
Taddese, Biniyam T.
Anlage, Steven M.
TI Application of the Random Coupling Model to Electromagnetic Statistics
in Complex Enclosures
SO IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
LA English
DT Article
DE Electromagnetic compatibility (EMC); over-moded enclosures; probability
density function; random coupling model (RCM); statistical
electromagnetism; wave scattering
ID CHAOTIC MICROWAVE CAVITIES; SCATTERING MATRICES; IMPEDANCE
AB The effectiveness of the random coupling model (RCM) in predicting electromagnetic wave coupling to targeted electronic components within a complex enclosure is examined. In the short-wavelength limit with respect to the characteristic length of the enclosure, electromagnetic wave propagation within a large enclosure is sensitive to small changes to the interior, or to the boundaries of the enclosure. Such changes can reduce or invalidate the applicability of deterministic predictions of the electromagnetic fields at radiofrequencies (RF) in large enclosures. Under such circumstances, a statistical approach is needed to provide a better understanding of RF coupling to components within large enclosures. In this paper, we experimentally demonstrate the applicability of a statistical technique, the RCM, to estimate the probabilistic magnitudes of RF fields on electrically large components (i.e., long cables, etc.) that are partially shielded within a complex, 3-D enclosure.
C1 [Drikas, Zachary B.; Gil, Jesus Gil; Hong, Sun K.; Andreadis, Tim D.] Naval Res Lab, Dept Tact Elect, Warfare Div, Washington, DC 20375 USA.
[Yeh, Jen-Hao; Taddese, Biniyam T.; Anlage, Steven M.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
RP Drikas, ZB (reprint author), Naval Res Lab, Dept Tact Elect, Warfare Div, Washington, DC 20375 USA.
EM zachary.drikas@nrl.navy.mil; jesus.gilgil@nrl.navy.mil;
sun.hong@nrl.navy.mil; tim.andreadis@nrl.navy.mil; davidyeh@umd.edu;
bini01@umd.edu; anlage@umd.edu
RI Hong, Sun/E-9597-2014
OI Hong, Sun/0000-0003-4417-8727
FU ONR Applied Electromagnetics Program [N0001410WX20844]; ONR/Maryland
Applied Electromagnetics Center [N0 0014-09-1-1190]; ONR MURI
[N00014-07-1-0734]
FX This work was supported by the ONR Applied Electromagnetics Program
N0001410WX20844, the ONR/Maryland Applied Electromagnetics Center under
Grant N0 0014-09-1-1190, Task A2, and ONR MURI through Grant
N00014-07-1-0734.
NR 20
TC 5
Z9 5
U1 0
U2 7
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9375
EI 1558-187X
J9 IEEE T ELECTROMAGN C
JI IEEE Trans. Electromagn. Compat.
PD DEC
PY 2014
VL 56
IS 6
BP 1480
EP 1487
DI 10.1109/TEMC.2014.2337262
PG 8
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA AX1OS
UT WOS:000346716800028
ER
PT J
AU Alles, ML
Hughes, HL
Ball, DR
McMarr, PJ
Schrimpf, RD
AF Alles, Michael L.
Hughes, Harold L.
Ball, Dennis R.
McMarr, Patrick J.
Schrimpf, Ronald D.
TI Total-Ionizing-Dose Response of Narrow, Long Channel 45 nm PDSOI
Transistors
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Long channel; narrow channel; partially-depleted SOI; total ionizing
dose (TID)
ID RADIATION; SOI; OXIDES
AB Measured results and 3D TCAD simulations demonstrate that narrow, long channel PDSOI devices may exhibit a total-ionizing-dose response more like FDSOI devices, attributable to regions of lighter body doping and trapped charge in the isolation regions.
C1 [Alles, Michael L.; Ball, Dennis R.; Schrimpf, Ronald D.] Vanderbilt Univ, Inst Space & Def Elect, Nashville, TN 37235 USA.
[Hughes, Harold L.] Naval Res Lab, Washington, DC 20375 USA.
[McMarr, Patrick J.] Sotera Def Solut, Herndon, VA 20171 USA.
RP Alles, ML (reprint author), Vanderbilt Univ, Inst Space & Def Elect, 221 Kirkland Hall, Nashville, TN 37235 USA.
EM mike.alles@vanderbilt.edu; hughes@estd.nrl.navy.mil;
patrick.mcmarr.ctr@nrl.navy.mil
FU Defense Threat Reduction Agency; Naval Research Laboratory
[N00173-13-1-G017]
FX This work was supported in part by the Defense Threat Reduction Agency
and in part by the Naval Research Laboratory under Grant
N00173-13-1-G017.
NR 13
TC 3
Z9 3
U1 1
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 2945
EP 2950
DI 10.1109/TNS.2014.2366725
PN 1
PG 6
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100021
ER
PT J
AU Francis, SA
Petrosky, JC
McClory, JW
Cress, CD
AF Francis, S. Ashley
Petrosky, James C.
McClory, John W.
Cress, Cory D.
TI Effects of Proton and X-ray Irradiation on Graphene Field-Effect
Transistors with Thin Gate Dielectrics
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Charge pumping; graphene; hysteresis; oxide traps; radiation effects
ID SI-SIO2 INTERFACE; DEFECT FORMATION; MOS-TRANSISTORS; DEVICES; TRAPS
AB Charge pumping and drain current-gate voltage (I-D-V-G) measurements are used to investigate degradation and environmental effects in X-ray and proton-irradiated graphene transistors. X-ray irradiation initially degrades mobility due to hole trapping in the oxide, and induces oxygen-related p-type doping that is evident in the increase in I-D once trapped holes anneal out; after long times, interface trap buildup dominates device response. Both the drain current and charge pumping current decrease initially after proton irradiation due to displacement damage and dedoping. However, continued degradation indicates further damage to the graphene layer itself, likely from oxygen-related defect creation in the graphene, induced water and gas molecules between the graphene layer and underlying substrate, or some combination of both. These results indicate that the environment can significantly affect the radiation response of graphene devices, and that the long-term response of the device may be quite different from the initial response due to defect creation, charge migration and annealing.
C1 [Francis, S. Ashley; Petrosky, James C.; McClory, John W.] Air Force Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
[Cress, Cory D.] US Naval Res Lab, Washington, DC USA.
RP Francis, SA (reprint author), Air Force Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45433 USA.
EM sarah.francis.ctr@afit.edu; james.petrosky@afit.edu; jmcclory@afit.edu;
carbon.nanoelectronics@nrl.navy.mil
OI Cress, Cory/0000-0001-7563-6693
FU Air Force Nuclear Weapon Center; Defense Threat Reduction Agency
FX The work of S. A. Francis was supported by a scholarship program managed
by the Oak Ridge Institute for Science and Education. This work was
supported in part by the Air Force Nuclear Weapon Center and the Defense
Threat Reduction Agency.
NR 35
TC 1
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U1 1
U2 13
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3010
EP 3017
DI 10.1109/TNS.2014.2364780
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100031
ER
PT J
AU Roig, F
Dusseau, L
Ribeiro, P
Auriel, G
Roche, NJH
Privat, A
Vaille, JR
Boch, J
Saigne, F
Marec, R
Calve, P
Bezerra, F
Ecoffet, R
Azais, B
AF Roig, F.
Dusseau, L.
Ribeiro, P.
Auriel, G.
Roche, N. J-H.
Privat, A.
Vaille, J. -R.
Boch, J.
Saigne, F.
Marec, R.
Calve, P.
Bezerra, F.
Ecoffet, R.
Azais, B.
TI Impact of Neutron-Induced Displacement Damage on the ATREE Response in
LM124 Operational Amplifier
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Bipolar analog integrated circuits; circuit modeling; displacement
damage; total non-ionizing dose; transient radiation effects; transient
response; X-ray effects
ID IONIZING-RADIATION; ANALOG CIRCUITS; BIPOLAR; TRANSIENTS; DEVICES;
ASETS; MODEL
AB The synergistic effect between displacement damage dose (DDD) and analog transient radiation effects on electronics (ATREE) in an operational amplifier (LM124) (opamp) from three different manufacturers is investigated. Pulsed X-ray experiments have highlighted ATREE sensitivity on devices significantly more important following exposure to fission neutrons than for unirradiated devices. A previously developed simulation tool is used to model ATREE responses taking into account the electrical parameters degradation due to displacement damage phenomenon. A good agreement is observed between model outputs and experimental ATREE results.
C1 [Roig, F.; Ribeiro, P.; Auriel, G.] Commissariat Energie Atom & Energies Alternat, F-46500 Gramat, France.
[Roig, F.; Dusseau, L.; Privat, A.; Vaille, J. -R.; Boch, J.; Saigne, F.] Univ Montpellier 2, CNRS, IES, UMR 5214, F-34097 Montpellier 5, France.
[Roche, N. J-H.] US Naval Res Lab, Washington, DC 20375 USA.
[Roche, N. J-H.] George Washington Univ, Washington, DC USA.
[Marec, R.; Calve, P.] Thales Alenia Space, F-31037 Toulouse 1, France.
[Bezerra, F.; Ecoffet, R.] Ctr Natl Etud Spatiales, F-31401 Toulouse 9, France.
[Azais, B.] Direct Generale Armement, F-92221 Bagneux, France.
RP Roig, F (reprint author), Commissariat Energie Atom & Energies Alternat, F-46500 Gramat, France.
EM Fabien.Roig@CEA.fr
FU Direction Generale de l'Armement; Centre National d'Etudes Spatiales;
Thales Alenia Space
FX The authors would like to thank the Direction Generale de l'Armement,
the Centre National d'Etudes Spatiales and Thales Alenia Space for their
support on this work.
NR 16
TC 3
Z9 3
U1 1
U2 7
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3043
EP 3049
DI 10.1109/TNS.2014.2365048
PN 1
PG 7
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100036
ER
PT J
AU Roche, NJH
Buchner, SP
Foster, CC
King, MP
Dodds, NA
Warner, JH
Mc Morrow, D
Decker, T
O'Neill, PM
Reddell, BD
Nguyen, KV
Samsel, IK
Hooten, NC
Bennett, WG
Reed, RA
AF Roche, N. J-H.
Buchner, S. P.
Foster, C. C.
King, M. P.
Dodds, N. A.
Warner, J. H.
Mc Morrow, D.
Decker, T.
O'Neill, P. M.
Reddell, B. D.
Nguyen, K. V.
Samsel, I. K.
Hooten, N. C.
Bennett, W. G.
Reed, R. A.
TI Validation of the Variable Depth Bragg Peak Method for Single-Event
Latchup Testing Using Ion Beam Characterization
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Bragg peak; heavy ions; pulse height analysis; single event latchup
AB The Variable Depth Bragg Peak method has been investigated for single event latchup testing by comparing latchup cross sections for heavy ions at low and high energies and by pulse height analysis. Results show that, unlike for an SOI device previously tested, where the charge collection depth is very small (70 nm), the comparison is not straightforward for latchup because of the large charge collection volumes involved. The variation in LET with depth for lower-energy ions greatly affects the comparison, but, if a charge collection depth of 50 mu m is assumed and the LET is averaged over that distance, the comparison improves significantly.
C1 [Roche, N. J-H.] George Washington Univ, Washington, DC 20073 USA.
[Buchner, S. P.; Warner, J. H.; Mc Morrow, D.] Naval Res Lab, Washington, DC 20375 USA.
[Foster, C. C.] Foster Consulting Serv LLC, University Pl, WA 98466 USA.
[King, M. P.; Dodds, N. A.; Samsel, I. K.; Hooten, N. C.; Bennett, W. G.; Reed, R. A.] Vanderbilt Univ, Nashville, TN 37212 USA.
[Decker, T.] Analog Devices Inc, Greensboro, NC 27409 USA.
[O'Neill, P. M.; Reddell, B. D.] NASA, JSC, Houston, TX 77058 USA.
[Nguyen, K. V.] Jacobs Technol, Houston, TX 77258 USA.
RP Roche, NJH (reprint author), George Washington Univ, Washington, DC 20073 USA.
EM Nicolas.roche.ctr.fr@nrl.navy.mil; fosterchc@nventure.com;
decker@analog.com; kyson.v.nguyen@nasa.gov
NR 9
TC 2
Z9 2
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3061
EP 3067
DI 10.1109/TNS.2014.2367593
PN 1
PG 7
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100039
ER
PT J
AU Chen, DK
Kim, H
Phan, A
Wilcox, E
LaBel, K
Buchner, S
Khachatrian, A
Roche, N
AF Chen, Dakai
Kim, Hak
Phan, Anthony
Wilcox, Edward
LaBel, Kenneth
Buchner, Stephen
Khachatrian, Ani
Roche, Nicolas
TI Single-Event Effect Performance of a Commercial Embedded ReRAM
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Heavy ion testing; lasers; non-volatile memory; radiation effects in
ICs; single-event effect (SEE)
ID HEAVY-ION IRRADIATION; ELECTRICAL CHARACTERISTICS; NONVOLATILE MEMORY;
IMPACT; CELLS
AB We show the single-event effect characteristics of a production-level embedded resistive memory. The resistive memory under investigation is a reduction-oxidation random access memory embedded inside a microcontroller. The memory structure consists of Ir top electrode, Ta-2 O5-6/TaOx metal-oxide, and TaN bottom electrode. The radiation testing focused on the resistive memory array and peripheral circuits, while other portions of the microcontroller were shielded against the ion beam. We found that the resistive memory array is hardened against heavy ion and pulsed-laser-induced bit upsets. However, the microcontroller is susceptible to single-event functional interrupts due to single-event upsets in the resistive memory peripheral control circuits, which comprise of CMOS elements. Furthermore, the resistive memory architecture is not susceptible to functional failures during write, which is problematic for flash memories due to radiation-induced charge pump degradation.
C1 [Chen, Dakai; LaBel, Kenneth] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Kim, Hak; Phan, Anthony; Wilcox, Edward] ASRC Space & Def, Seabrook, MD 20706 USA.
[Buchner, Stephen; Khachatrian, Ani; Roche, Nicolas] Naval Res Lab, Washington, DC 20375 USA.
RP Chen, DK (reprint author), NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
EM dakai.chen-1@nasa.gov; hak.s.kim@nasa.gov; stephen.buchner@nrl.navy.mil
FU NASA Electronic Parts and Packaging (NEPP) Program; Defense Threat
Reduction Agency (DTRA) under IACRO [DTRA10027-8002]
FX This work was supported in part by the NASA Electronic Parts and
Packaging (NEPP) Program and the Defense Threat Reduction Agency (DTRA)
under IACRO DTRA10027-8002 to NASA.
NR 24
TC 7
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U1 3
U2 14
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3088
EP 3094
DI 10.1109/TNS.2014.2361488
PN 1
PG 7
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100043
ER
PT J
AU Lourenco, NE
Fleetwood, ZE
Jung, SW
Cardoso, AS
Chakraborty, PS
England, TD
Roche, NJH
Khachatrian, A
McMorrow, D
Buchner, SP
Melinger, JS
Warner, JH
Paki, P
Kaynak, M
Tillack, B
Knoll, D
Cressler, JD
AF Lourenco, Nelson E.
Fleetwood, Zachary E.
Jung, Seungwoo
Cardoso, Adilson S.
Chakraborty, Partha S.
England, Troy D.
Roche, Nicolas J. -H.
Khachatrian, Ani
McMorrow, Dale
Buchner, Stephen P.
Melinger, Joseph S.
Warner, Jeffrey H.
Paki, Pauline
Kaynak, Mehmet
Tillack, Bernd
Knoll, Dieter
Cressler, John D.
TI On the Transient Response of a Complementary (npn plus pnp) SiGe HBT
BiCMOS Technology
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE C-SiGe; charge collection; complementary bipolar; complementary-SiGe;
nanoTCAD; PNP heterojunction bipolar transistors; radiation hardening;
SiGe HBT; silicon-germanium technology; single-event effects (SEE);
single-event transient (SET)
ID DESIGNING ELECTRONIC SYSTEMS; PROTON TOLERANCE; PART-I; CIRCUITS;
4TH-GENERATION; MITIGATION; OPERATION; LOGIC
AB The single-event transient (SET) response of a third-generation bulk C-SiGe (npn + pnp) BiCMOS platform is investigated for the first time. Pulsed-laser, two-photon absorption experiments show that the pnp SiGe heterojunction bipolar transistor (SiGe HBT) exhibits a significant reduction in sensitive area as well as an improved transient response compared with the npn SiGe HBT. Ion-strike simulations on 3-D TCAD, C-SiGe HBT models agree with experimental findings, showing a reduction in overall transient duration and collected charge for the pnp SiGe HBT. These improvements in device-level SETs are attributed to the n-well isolation layer present in the vertical material stack of the pnp HBT. These results suggest that precision analog, RF/mm-wave, and high-speed digital applications utilizing unhardened, high-performance bulk pnp SiGe HBTs should benefit from an inherently improved SEE response.
C1 [Lourenco, Nelson E.; Fleetwood, Zachary E.; Jung, Seungwoo; Cardoso, Adilson S.; Chakraborty, Partha S.; Cressler, John D.] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA.
[England, Troy D.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
[Roche, Nicolas J. -H.] George Washington Univ, Washington, DC 20052 USA.
[Khachatrian, Ani] Sotera Def, Annapolis Jct, MD 20701 USA.
[McMorrow, Dale; Buchner, Stephen P.; Melinger, Joseph S.; Warner, Jeffrey H.] Naval Res Lab, Washington, DC 20052 USA.
[Paki, Pauline] Def Threat Reduct Agcy, Ft Belvoir, VA 22060 USA.
[Kaynak, Mehmet; Tillack, Bernd; Knoll, Dieter] IHP Microelect, D-15236 Frankfurt, Germany.
RP Lourenco, NE (reprint author), Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA.
EM nlourenco@gatech.edu; cressler@ece.gatech.edu
FU Defense Threat Reduction Agency [HDTRA1-13-C-0058]
FX This work was supported by the Defense Threat Reduction Agency under
contract HDTRA1-13-C-0058.
NR 32
TC 4
Z9 4
U1 1
U2 8
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3146
EP 3153
DI 10.1109/TNS.2014.2361269
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100051
ER
PT J
AU Jung, SW
Lourenco, NE
Song, IY
Oakley, MA
England, TD
Arora, R
Cardoso, AS
Roche, NJH
Khachatrian, A
McMorrow, D
Buchner, SP
Melinger, JS
Warner, JH
Paki-Amouzou, P
Babcock, JA
Cressler, JD
AF Jung, Seungwoo
Lourenco, Nelson E.
Song, Ickhyun
Oakley, Michael A.
England, Troy D.
Arora, Rajan
Cardoso, Adilson S.
Roche, Nicolas J. -H.
Khachatrian, Ani
McMorrow, Dale
Buchner, Stephen P.
Melinger, Joseph S.
Warner, Jeffrey H.
Paki-Amouzou, Pauline
Babcock, Jeff A.
Cressler, John D.
TI An Investigation of Single-Event Transients in C-SiGe HBT on SOI Current
Mirror Circuits
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Current mirrors; inverse-mode operation; mixed-mode simulation;
radiation hardening; SiGe HBT; single-event effects; single-event
transient; single-event upset; TCAD
ID DESIGNING ELECTRONIC SYSTEMS; DEEP TRENCH ISOLATION; INVERSE-MODE;
VOLTAGE REFERENCES; RHBD TECHNIQUES; RADIATION; MITIGATION; OPERATION;
PERFORMANCE; IMPACT
AB The single-event effect sensitivity of three different commonly employed current mirror circuits, as well as an unconventional inverse-mode current mirror, all implemented in C-SiGe (NPN + PNP) HBT on SOI technology are investigated. Comparisons of the measured data of the basic NPN and PNP current mirror circuits show higher single-event radiation tolerance of PNP SiGe HBTs compared with NPN SiGe HBTs. The concept of utilizing inverse-mode SiGe HBTs in current mirror circuits is investigated. Measurement results validate the feasibility of employing inverse-mode PNP SiGe HBTs in current mirrors and show an excellent resilience against ion-strikes. Full 3-D NanoTCAD models of the SiGe HBTs are developed and used in mixed-mode TCAD simulations (within Cadence) to validate the measurement results. Finally, based on the measurement data and analysis of the four current mirrors, some practical suggestions and observations are offered for operation of such circuits in extreme environments.
C1 [Jung, Seungwoo; Lourenco, Nelson E.; Song, Ickhyun; Oakley, Michael A.; England, Troy D.; Cardoso, Adilson S.; Cressler, John D.] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA.
[Arora, Rajan; Babcock, Jeff A.] Texas Instruments Inc, Dallas, TX 75243 USA.
[Roche, Nicolas J. -H.; Khachatrian, Ani; McMorrow, Dale; Buchner, Stephen P.; Melinger, Joseph S.; Warner, Jeffrey H.] Naval Res Lab, Washington, DC 20375 USA.
[Paki-Amouzou, Pauline] Def Threat Reduct Agcy, Ft Belvoir, VA 22060 USA.
RP Jung, SW (reprint author), Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA.
EM jung@gatech.edu; nlourenco@gatech.edu; ihsong@gatech.edu;
maoakley@gatech.edu; tengland3@gatech.edu; arora@ti.com;
cardosoa@gatech.edu; nroche@gwu.edu; dale.mcmorrow@nrl.navy.mil;
stephen.buchner@nrl.navy.mil; jeffrey.warner@nrl.navy.mil;
pauline.amouzou@dtra.mil; jeff.babcock@ti.com; cressler@ece.gatech.edu
FU Defense Threat Reduction Agency [HDTRA1-13-C-0058]
FX This work was supported by the Defense Threat Reduction Agency under
contract HDTRA1-13-C-0058.
NR 29
TC 6
Z9 7
U1 0
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3193
EP 3200
DI 10.1109/TNS.2014.2358207
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100057
ER
PT J
AU Roig, F
Dusseau, L
Ribeiro, P
Auriel, G
Roche, NJH
Privat, A
Vaille, JR
Boch, J
Saigne, F
Marec, R
Calvel, P
Bezerra, F
Ecoffet, R
Azais, B
AF Roig, Fabien
Dusseau, L.
Ribeiro, P.
Auriel, G.
Roche, N. J. -H.
Privat, A.
Vaille, J. -R.
Boch, J.
Saigne, F.
Marec, R.
Calvel, P.
Bezerra, F.
Ecoffet, R.
Azais, B.
TI The Role of Feedback Resistors and TID Effects in the ASET Response of a
High Speed Current Feedback Amplifier
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Bipolar analog integrated circuits; ionizing dose; single event
transient; transient analysis; transient response
ID SINGLE-EVENT TRANSIENTS; LM124 OPERATIONAL-AMPLIFIER;
INTEGRATED-CIRCUITS; SENSITIVITY
AB The influence of external circuit designs on ASET shapes in a high speed current feedback amplifier (CFA) (AD844) is investigated by means of the pulsed laser single event effect (PLSEE) simulation technique. Changes of the feedback resistors modify circuit's electrical parameters such as closed-loop gain and bandwidth, affecting amplifier stability and so ASET shapes. Qualitative explanations based on general electronic rules and feedback theories enable the understanding of a CFA operation establishing a correlation between the evolution of external feedback resistor values and ASET parameters. TID effects on the ASET sensitivity in AD844 CFA are also investigated in this work highlighting different behaviors according to the impacted bipolar transistor in the integrated circuit.
C1 [Roig, Fabien; Ribeiro, P.; Auriel, G.] CEA Gramat, Commissariat Energie Atom & Energies Alternat, F-46500 Gramat, France.
[Roig, Fabien; Dusseau, L.; Privat, A.; Vaille, J. -R.; Boch, J.; Saigne, F.] Univ Montpellier 2, IES UMR CNRS 5214, F-34097 Montpellier 5, France.
[Roche, N. J. -H.] US Naval Res Lab, Washington, DC 20375 USA.
[Roche, N. J. -H.] George Washington Univ, Washington, DC 20052 USA.
[Marec, R.; Calvel, P.] Thales Alenia Space, F-31037 Toulouse 1, France.
[Bezerra, F.; Ecoffet, R.] Ctr Natl Etud Spatiales, F-31401 Toulouse 9, France.
[Azais, B.] DGA, F-92221 Bagneux, France.
RP Roig, F (reprint author), CEA Gramat, Commissariat Energie Atom & Energies Alternat, F-46500 Gramat, France.
EM Fabien.Roig@CEA.fr
FU Direction Generale de l'Armement; Centre National d'Etudes Spatiales;
U.S. Naval Research Laboratory; Thales Alenia Space
FX The authors would like to thank the Direction Generale de l'Armement,
the Centre National d'Etudes Spatiales, the U.S. Naval Research
Laboratory and Thales Alenia Space for their support on this work.
NR 20
TC 3
Z9 3
U1 1
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3201
EP 3209
DI 10.1109/TNS.2014.2369347
PN 1
PG 9
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100058
ER
PT J
AU Cardoso, AS
Chakraborty, PS
Karaulac, N
Fleischhauer, DM
Lourenco, NE
Fleetwood, ZE
Omprakash, AP
England, TD
Jung, S
Najafizadeh, L
Roche, NJH
Khachatrian, A
Warner, JH
McMorrow, D
Buchner, SP
Zhang, EX
Zhang, CX
McCurdy, MW
Reed, RA
Fleetwood, DM
Paki-Amouzou, P
Cressler, JD
AF Cardoso, Adilson S.
Chakraborty, Partha S.
Karaulac, Nedeljko
Fleischhauer, David M.
Lourenco, Nelson E.
Fleetwood, Zachary E.
Omprakash, Anup P.
England, Troy D.
Jung, Seungwoo
Najafizadeh, Laleh
Roche, Nicolas J. -H.
Khachatrian, Ani
Warner, Jeffrey H.
McMorrow, Dale
Buchner, Stephen P.
Zhang, En Xia
Zhang, Cher Xuan
McCurdy, Michael W.
Reed, Robert A.
Fleetwood, Daniel M.
Paki-Amouzou, Pauline
Cressler, John D.
TI Single-Event Transient and Total Dose Response of Precision Voltage
Reference Circuits Designed in a 90-nm SiGe BiCMOS Technology
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Bandgap reference (BGR); biCMOS circuits; PIN diode; precision voltage
reference; radiation; radiation hardening by design; SiGe heterojunction
bipolar transistors (HBTs); single-event transient (SET); total ionizing
dose (TID); transient radiation effects; transient response
ID INDUCED CHARGE COLLECTION; ELECTRONIC SYSTEMS; MITIGATION; PERFORMANCE;
SIMULATION; OPERATION; SEE
AB This paper presents an investigation of the impact of single-event transients (SETs) and total ionization dose (TID) on precision voltage reference circuits designed in a fourth-generation, 90-nm SiGe BiCMOS technology. A first-order uncompensated bandgap reference (BGR) circuit is used to benchmark the SET and TID responses of these voltage reference circuits (VRCs). Based on the first-order BGR radiation response, new circuit-level radiation-hardening-by-design (RHBD) techniques are proposed. An RHBD technique using inverse-mode (IM) transistors is demonstrated in a BGR circuit. In addition, a PIN diode VRC is presented as a potential SET and TID tolerant, circuit-level RHBD alternative.
C1 [Cardoso, Adilson S.; Chakraborty, Partha S.; Karaulac, Nedeljko; Fleischhauer, David M.; Lourenco, Nelson E.; Fleetwood, Zachary E.; Omprakash, Anup P.; England, Troy D.; Jung, Seungwoo; Cressler, John D.] Georgia Inst Technol, Sch Elect & Comp Engn, NW, Atlanta, GA 30332 USA.
[Najafizadeh, Laleh] Rutgers State Univ, Dept Elect & Comp Engn, Piscataway, NJ 08854 USA.
[Roche, Nicolas J. -H.; Khachatrian, Ani; Warner, Jeffrey H.; McMorrow, Dale; Buchner, Stephen P.] Naval Res Lab, Washington, DC 20375 USA.
[Roche, Nicolas J. -H.] George Washington Univ, Washington, DC 20052 USA.
[Paki-Amouzou, Pauline] Def Threat Reduct Agcy, Ft Belvoir, VA 22060 USA.
[Zhang, En Xia; Zhang, Cher Xuan; McCurdy, Michael W.; Reed, Robert A.; Fleetwood, Daniel M.] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA.
RP Cardoso, AS (reprint author), Georgia Inst Technol, Sch Elect & Comp Engn, NW, Atlanta, GA 30332 USA.
EM cardosoa@gatech.edu
RI Zhang , Cher Xuan/J-4754-2015
OI Zhang , Cher Xuan/0000-0003-0518-864X
FU Defense Threat Reduction Agency [HDTRA1-13-C-0058]; NASA-NEPP
FX This work was supported in part by the Defense Threat Reduction Agency
under HDTRA1-13-C-0058 and by NASA-NEPP.
NR 23
TC 5
Z9 5
U1 0
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3210
EP 3217
DI 10.1109/TNS.2014.2358078
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100059
ER
PT J
AU Song, I
Jung, S
Lourenco, NE
Raghunathan, US
Fleetwood, ZE
Zeinolabedinzadeh, S
Gebremariam, TB
Inanlou, F
Roche, NJH
Khachatrian, A
McMorrow, D
Buchner, SP
Melinger, JS
Warner, JH
Paki-Amouzou, P
Cressler, JD
AF Song, Ickhyun
Jung, Seungwoo
Lourenco, Nelson E.
Raghunathan, Uppili S.
Fleetwood, Zachary E.
Zeinolabedinzadeh, Saeed
Gebremariam, Tikurete B.
Inanlou, Farzad
Roche, Nicholas J. -H.
Khachatrian, Ani
McMorrow, Dale
Buchner, Stephen P.
Melinger, Joseph S.
Warner, Jeffrey H.
Paki-Amouzou, Pauline
Cressler, John D.
TI Design of Radiation-Hardened RF Low-Noise Amplifiers Using Inverse-Mode
SiGe HBTs
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Cascode; inverse-mode; low-noise amplifier (LNA); mixed-mode simulation;
pulsed-laser; radiation-hardening-by-design (RHBD); siGe HBT;
single-event effect (SEE); single-event transient (SET); two photon
absorption (TPA)
ID PROTON TOLERANCE; PERFORMANCE; MITIGATION; IMPACT
AB A SiGe RF low-noise amplifier (LNA) with built-in tolerance to single-event transients is proposed. The LNA utilizes an inverse-mode SiGe HBT for the common-base transistor in a cascode core. This new cascode configuration exhibits reduced transient peaks and shorter transient durations compared to the conventional cascode one. The improved SET response was verified with through-wafer two-photon absorption pulsed-laser experiments and supported via mixed-mode TCAD simulations. In addition, analysis of the RF performance and the reliability issues associated with the inverse-mode operation further suggests this new cascode structure can be a strong contender for space-based applications. The LNA with the inverse-mode-based cascode core was fabricated in a 130 nm SiGe BiCMOS platform and has similar RF performance to the conventional schematic-based LNA, further validating the proposed approach.
C1 [Song, Ickhyun; Jung, Seungwoo; Lourenco, Nelson E.; Raghunathan, Uppili S.; Fleetwood, Zachary E.; Zeinolabedinzadeh, Saeed; Gebremariam, Tikurete B.; Inanlou, Farzad; Cressler, John D.] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA.
[Roche, Nicholas J. -H.] George Washington Univ, Washington, DC 20052 USA.
[Roche, Nicholas J. -H.; Khachatrian, Ani; McMorrow, Dale; Buchner, Stephen P.; Melinger, Joseph S.; Warner, Jeffrey H.] Naval Res Lab, Washington, DC 20375 USA.
[Khachatrian, Ani] Sotera Def, Annapolis Jct, MD 20701 USA.
[Paki-Amouzou, Pauline] Def Threat Reduct Agcy, Ft Belvoir, VA 22060 USA.
RP Song, IY (reprint author), Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA.
EM ihsong@gatech.edu
FU Defense Threat Reduction Agency [HDTRA1-13-C-0058]; NASA-NEPP; IBM
FX This work was supported in part by the Defense Threat Reduction Agency
under contract HDTRA1-13-C-0058, NASA-NEPP, and IBM.
NR 20
TC 10
Z9 10
U1 5
U2 10
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3218
EP 3225
DI 10.1109/TNS.2014.2363631
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100060
ER
PT J
AU Messenger, SR
Wong, F
Hoang, B
Cress, CD
Walters, RJ
Kluever, CA
Jones, G
AF Messenger, Scott R.
Wong, Frankie
Hoang, Bao
Cress, Cory D.
Walters, Robert J.
Kluever, Craig A.
Jones, Glenn
TI Low-Thrust Geostationary Transfer Orbit (LT2GEO) Radiation Environment
and Associated Solar Array Degradation Modeling and Ground Testing
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Radiation effects; radiation environments; solar cells
ID ELECTRIC PROPULSION
AB Low-thrust geostationary transfer orbits (LT2GEO) are found to offer significant low cost options thus making them very attractive for GEO missions. However, LT2GEOs increase the transfer orbit time from days to months, thereby causing a significant increase in the time that satellites traverse the most intense trapped particle radiation belts. This paper describes the LT2GEO radiation environment and provides some practical implications using new solar cell technologies and materials. New solar cell and coverglass testing protocols are established using Monte Carlo transport modeling and experimental results are given for Qioptiq CMG borosilicate coverglass.
C1 [Messenger, Scott R.] Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA.
[Wong, Frankie; Hoang, Bao] Space Syst Loral, Palo Alto, CA 94303 USA.
[Cress, Cory D.; Walters, Robert J.] US Naval Res Lab, Washington, DC 20375 USA.
[Kluever, Craig A.] Univ Missouri, Columbia, MO 65211 USA.
[Jones, Glenn] Qioptiq Space Technol, Trefnant, Denbigh, Wales.
RP Messenger, SR (reprint author), Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA.
EM scott.messenger@umbc.edu; fwong@sslmda.com; bhoang@sslmda.com;
klueverc@missouri.edu; Glenn.Jones@uk.qioptiq.com
OI Cress, Cory/0000-0001-7563-6693
FU U.S. Naval Research Laboratory [0173-14-1-G002]
FX This work was supported in part by the U.S. Naval Research Laboratory
under Grant 0173-14-1-G002.
NR 26
TC 2
Z9 2
U1 1
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3348
EP 3355
DI 10.1109/TNS.2014.2364894
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100076
ER
PT J
AU Khachatrian, A
Roche, NJH
McMorrow, D
Warner, JH
Buchner, SP
Melinger, JS
AF Khachatrian, Ani
Roche, Nicolas J-H
McMorrow, Dale
Warner, Jeffrey H.
Buchner, Stephen P.
Melinger, Joseph S.
TI A Dosimetry Methodology for Two-Photon Absorption Induced Single-Event
Effects Measurements
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE Beam monitors; dosimetry; laser beamline; operating point; optical
measurement; photodetector; pulsed laser; quantitative correlation;
single-event effects; two-photon absorption
ID PULSED-LASER; TRANSIENTS; DEVICES; DESIGNS; BEAM; ION
AB A pulsed-laser dosimetry approach for two-photon absorption (TPA) single-event effects (SEE) measurements is presented. Development and implementation of three online beam monitors is described. The beammonitors permit characterization of the primary laser beam parameters of interest: the pulse energy delivered to the device under test, the pulse duration, and the focused laser spot size. A direct consequence of this methodology is the ability to monitor continuously the operating point of the TPA SEE pulsed-laser beamline and to make the necessary adjustments when parameters drift, either during an experiment or between experiments.
C1 [Khachatrian, Ani] Sotera Def Solut, Annapolis Jct, MD 20701 USA.
[Khachatrian, Ani; Roche, Nicolas J-H; McMorrow, Dale; Warner, Jeffrey H.; Buchner, Stephen P.; Melinger, Joseph S.] US Naval Res Lab, Washington, DC 20375 USA.
[Roche, Nicolas J-H] George Washington Univ, Washington, DC 20052 USA.
RP Khachatrian, A (reprint author), Sotera Def Solut, Annapolis Jct, MD 20701 USA.
EM ani.khachatrian.ctr@nrl.navy.mil; nicolas.roche.ctr.fr@nrl.navy.mil;
mc-morrow@ccs.nrl.navy.mil
FU DTRA Radiation Hardened Microelectronics Program; Office of Naval
Research
FX This work was supported by the DTRA Radiation Hardened Microelectronics
Program and the Office of Naval Research.
NR 20
TC 6
Z9 6
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3416
EP 3423
DI 10.1109/TNS.2014.2369006
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100085
ER
PT J
AU Hales, JM
McMorrow, D
Roche, NJH
Khachatrian, A
Warner, JH
Buchner, SP
Melinger, JS
Perry, JW
Lotshaw, WT
Dubikovsky, V
AF Hales, Joel M.
McMorrow, Dale
Roche, Nicolas J-H.
Khachatrian, Ani
Warner, Jeffrey H.
Buchner, Stephen P.
Melinger, Joseph S.
Perry, Joseph W.
Lotshaw, William T.
Dubikovsky, Vladislav
TI Simulation of Light-Matter Interaction and Two-Photon Absorption Induced
Charge Deposition by Ultrashort Optical Pulses in Silicon
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 51st Annual IEEE International Nuclearand Space Radiation Effects
Conference (NSREC)
CY JUL 14-18, 2014
CL Paris, FRANCE
SP IEEE
DE CMOS; free-carrier absorption; free-carrier refraction; nonlinear
optics; optical Kerr effect; silicon; single-event effect (SEE);
single-event upset (SEU); two-photon absorption
ID NONLINEAR REFRACTION; THROUGH-WAFER; KNIFE-EDGE; MU-M; BEAM; LIMITER;
FOCUS
AB Nonlinear beam propagation software is used to calculate quantitatively the two-photon absorption (TPA)-induced charge-density profiles generated in silicon by focused femtosecond laser pulses under conditions that are experimentally relevant for single-event effects studies. The described approach permits simulation and prediction of the impact of various optical nonlinearities on the beam propagation through, and generation of free carriers in silicon for F/#s approaching one. It is found that, even at moderate incident laser pulse energies, the nonlinear-optical processes of nonlinear refraction, free-carrier absorption, and free-carrier refraction all contribute, and must be considered in describing the TPA-induced charge generation in silicon. Free-carrier refraction is found to play the dominant role in distorting the charge density profile at larger pulse energies. The simulation results are validated with experimentally measured beam sizes for different focusing conditions.
C1 [Hales, Joel M.; Khachatrian, Ani] Sotera Def, Annapolis Jct, MD 20701 USA.
[Hales, Joel M.; Perry, Joseph W.] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
[McMorrow, Dale; Roche, Nicolas J-H.; Khachatrian, Ani; Warner, Jeffrey H.; Buchner, Stephen P.; Melinger, Joseph S.] US Naval Res Lab, Washington, DC 20375 USA.
[Roche, Nicolas J-H.] George Washington Univ, Washington, DC 20052 USA.
[Lotshaw, William T.] Aerosp Corp, El Segundo, CA 90245 USA.
[Dubikovsky, Vladislav] Intrace Med SA, CH-1015 Lausanne, Switzerland.
RP Hales, JM (reprint author), Sotera Def, Annapolis Jct, MD 20701 USA.
EM mc-morrow@ccs.nrl.navy.mil
FU DTRA Radiation Hardened Microelectronics Program; Office of Naval
Research; Office of Naval Research [N00014-97-1-0936]; Naval Air Warfare
Center Joint Service Agile Program [N00421-98-C-1327]
FX This work was supported by the DTRA Radiation Hardened Microelectronics
Program and the Office of Naval Research. The NLOBPM code used in this
research was developed at CREOL, The College of Optics and Photonics,
under support from the Office of Naval Research, grant N00014-97-1-0936,
and the Naval Air Warfare Center Joint Service Agile Program, contract
N00421-98-C-1327. See references [7], [10], and [11].
NR 23
TC 6
Z9 6
U1 2
U2 20
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
EI 1558-1578
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD DEC
PY 2014
VL 61
IS 6
BP 3504
EP 3511
DI 10.1109/TNS.2014.2368569
PN 1
PG 8
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA AX1RO
UT WOS:000346724100098
ER
PT J
AU Liou, K
Wu, CC
Dryer, M
Wu, ST
Rich, N
Plunkett, S
Simpson, L
Fry, CD
Schenk, K
AF Liou, Kan
Wu, Chin-Chun
Dryer, Murray
Wu, Shi-Tsan
Rich, Nathan
Plunkett, Simon
Simpson, Lynn
Fry, Craig D.
Schenk, Kevin
TI Global simulation of extremely fast coronal mass ejection on 23 July
2012
SO JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
LA English
DT Article
DE Coronal mass ejection; MHD simulation; CME-driven shock
ID SOLAR-WIND; INTERPLANETARY SPACE; GEOMAGNETIC STORMS; SHOCK-WAVES; BOW
SHOCK; TIME; ARRIVAL; MODEL; EARTH; ACCELERATION
AB The July 23, 2012 CME was an extremely fast backside event, reaching similar to 1 AU (STEREO-A) within 20 h as compared to similar to 3-6 days for typical CME events. Here, we present results from a simulation study of the CME and its driven shock using a combined kinematic and magnetohydrodynamic (MHD) simulation model, H3DMHD. In general, the model results match well with in situ measurements in the arrival time of the CME-driven shock and the total magnetic field strength, assuming an initial CME speed of 3100 km/s. Based on extrapolation of an empirical model, the fast CME and its large magnetic field (I vertical bar B vertical bar similar to 120 nT) are capable of producing an extremely large geomagnetic storm (Dst similar to - 545 nT), comparable to the well-known Halloween storm in 2003, if the CME had made a direct impact to the Earth. We investigated the effect of the adiabatic index (gamma). It is found that the shock tends to arrive slightly later for a smaller gamma value, and gamma=5/3 provides the best agreement for the shock arrival time. We also demonstrate that the strength (the Mach number) of the CME-driven fast-mode shock is not the largest at the "nose" of the CME. This is mainly due to the manifestation of fast-mode wave speed upstream of the shock. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Liou, Kan] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA.
[Wu, Chin-Chun; Rich, Nathan; Plunkett, Simon; Simpson, Lynn] US Navy, Res Lab, Washington, DC 20375 USA.
[Dryer, Murray] NOAA, Space Weather Predict Ctr Ret, Boulder, CO 80305 USA.
[Wu, Shi-Tsan] Univ Alabama, CSPAR, Huntsville, AL 35899 USA.
[Fry, Craig D.] Explorat Phys Int Inc, Huntsville, AL 35806 USA.
[Schenk, Kevin] NASA, GSFC, Greenbelt, MD USA.
RP Liou, K (reprint author), Johns Hopkins Univ, Appl Phys Lab, Johns Hopkins Rd, Laurel, MD 20723 USA.
EM kan.liou@jhuapl.edu
RI Liou, Kan/C-2089-2016
OI Liou, Kan/0000-0001-5277-7688
FU NSF [AGS-0964396, AGS1153323]; APL's Janney grant; ONR 6.1 program
FX We are grateful to the Reviewers for their constructive comments on the
paper. We acknowledge the use of solar EUV disk and coronagraph images
from the STEREO/SECCHI instrument (R.A. Howard, PI), solar wind plasma
data from STEREO/PLASTIC Investigation (A.B. Galvin, PI), and magnetic
field data from STEREO/IMPACT (J. Luhmann, PI). The SECCHI data used
here are produced by an international consortium of the Naval Research
Laboratory, Lockheed Martin Solar and Astrophysics Laboratory, and NASA
Goddard Space Flight Center (USA), Rutherford Appleton Laboratory and
University of Birmingham (UK), Max-Planck-Institut fur
Sonnensystemforschung (Germany), Centre Spatiale de Liege (Belgium),
Institut d'Optique Theorique et Appliquee and Institut d'Astrophysique
Spatiale (France). The work at JHUAPL was supported partially by NSF
Grant AGS-0964396. KL acknowledges support from APL's Janney grant for
preparation of the manuscript. The work at NRL was supported by ONR 6.1
program. The work of S.-T. Wu is supported by NSF Grant AGS1153323 to
UAH.
NR 54
TC 11
Z9 11
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1364-6826
EI 1879-1824
J9 J ATMOS SOL-TERR PHY
JI J. Atmos. Sol.-Terr. Phys.
PD DEC
PY 2014
VL 121
BP 32
EP 41
DI 10.1016/j.jastp.2014.09.013
PN A
PG 10
WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
GA AX6GY
UT WOS:000347022200004
ER
PT J
AU Bradstreet, AJ
Brander, RW
McCarroll, JR
Brighton, B
Howes, DD
Drozdzewski, D
Sherker, S
Turner, I
Roberts, A
MacMahan, J
AF Bradstreet, Anthony J.
Brander, Robert W.
McCarroll, Jak R.
Brighton, Barbara
Howes, Dale Dominey
Drozdzewski, Danielle
Sherker, Shauna
Turner, Ian
Roberts, Amelia
MacMahan, Jamie
TI Rip Current Survival Principles: Towards Consistency
SO JOURNAL OF COASTAL RESEARCH
LA English
DT Article
DE Rip currents; survival methods; principles; public education; social
marketing; communication; public safety; drowning prevention; injury
prevention; drowning; key messages
ID CURRENT HAZARD; BEACH
AB Advances in applied rip current research over the past 10 years have dramatically increased our collective understanding of the hazard posed to communities by rip currents. Repeated drifter, dye, swimmer, in situ instrumentation, and model experimentation has demonstrated the highly variable nature of rip currents, which has significant implications for long standing survival strategies. Analysis of prevalent rip current survival advice revealed that under variable rip current conditions, the advice may not prove effective in-situ, resulting in individual adopting alternative behaviours, which may or may not have been endorsed or promoted by safety authorities. This paper discusses evidence supporting key principles prominent in the discourse between public safety practitioners and rip current researchers, and presents how these principles relate to each other in practice. The principles are set into two categories: avoidance and survival. They have been developed to support consistent engagement, education and communication strategies for community resilience and further reduce the burden of rip current related drowning globally.
C1 [Bradstreet, Anthony J.; Brighton, Barbara] Surf Life Saving Australia, Sydney, NSW, Australia.
[Brander, Robert W.; McCarroll, Jak R.; Drozdzewski, Danielle; Sherker, Shauna; Roberts, Amelia] UNSW Australia, Sch Biol Earth & Environm Sci, Sydney, NSW, Australia.
[Turner, Ian] UNSW Australia, Water Res Lab, Sch Civil & Environm Engn, Sydney, NSW, Australia.
[Howes, Dale Dominey] Univ Sydney, Sch Geosci, Sydney, NSW 2006, Australia.
[MacMahan, Jamie] Naval Postgrad Sch, Monterey, CA USA.
RP Bradstreet, AJ (reprint author), Surf Life Saving Australia, 789 Bot Rd, Sydney, NSW, Australia.
EM abradstreet@slsa.asn.au
OI Drozdzewski, Danielle/0000-0001-6802-0540; Turner,
Ian/0000-0001-9884-6917
FU Australian Research Council [LP110200134]; Surf Life Saving Australia
FX The work described in this publication was supported by the Australian
Research Council Linkage Grant Project LP110200134 and Surf Life Saving
Australia.
NR 28
TC 3
Z9 3
U1 4
U2 13
PU COASTAL EDUCATION & RESEARCH FOUNDATION
PI LAWRENCE
PA 810 EAST 10TH STREET, LAWRENCE, KS 66044 USA
SN 0749-0208
EI 1551-5036
J9 J COASTAL RES
JI J. Coast. Res.
PD WIN
PY 2014
SI 72
BP 85
EP 92
DI 10.2112/SI72-016.1
PG 8
WC Environmental Sciences; Geography, Physical; Geosciences,
Multidisciplinary
SC Environmental Sciences & Ecology; Physical Geography; Geology
GA AY0GI
UT WOS:000347275100016
ER
PT J
AU Buckhout-White, S
Spillmann, CM
Algar, WR
Khachatrian, A
Melinger, JS
Goldman, ER
Ancona, MG
Medintz, IL
AF Buckhout-White, Susan
Spillmann, Christopher M.
Algar, W. Russ
Khachatrian, Ani
Melinger, Joseph S.
Goldman, Ellen R.
Ancona, Mario G.
Medintz, Igor L.
TI Assembling programmable FRET-based photonic networks using designer DNA
scaffolds
SO NATURE COMMUNICATIONS
LA English
DT Article
ID QUANTUM DOTS; ENERGY-TRANSFER; NUCLEIC-ACIDS; NANOSTRUCTURES;
NANOTECHNOLOGY; WIRES; DENDRIMER; POLYFLUOROPHORES; MOLECULES; JUNCTIONS
AB DNA demonstrates a remarkable capacity for creating designer nanostructures and devices. A growing number of these structures utilize Forster resonance energy transfer (FRET) as part of the device's functionality, readout or characterization, and, as device sophistication increases so do the concomitant FRET requirements. Here we create multi-dye FRET cascades and assess how well DNA can marshal organic dyes into nanoantennae that focus excitonic energy. We evaluate 36 increasingly complex designs including linear, bifurcated, Holliday junction, 8-arm star and dendrimers involving up to five different dyes engaging in four-consecutive FRET steps, while systematically varying fluorophore spacing by Forster distance (R-0). Decreasing R-0 while augmenting cross-sectional collection area with multiple donors significantly increases terminal exciton delivery efficiency within dendrimers compared with the first linear constructs. Forster modelling confirms that best results are obtained when there are multiple interacting FRET pathways rather than independent channels by which excitons travel from initial donor(s) to final acceptor.
C1 [Buckhout-White, Susan; Spillmann, Christopher M.; Algar, W. Russ; Goldman, Ellen R.; Medintz, Igor L.] US Navy, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
[Buckhout-White, Susan] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA.
[Algar, W. Russ] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada.
[Khachatrian, Ani; Melinger, Joseph S.; Ancona, Mario G.] US Navy, Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
[Khachatrian, Ani] Sotera Def Solut Inc, Columbia, MD 21046 USA.
RP Medintz, IL (reprint author), US Navy, Res Lab, Ctr Biomol Sci & Engn, Code 6900,4555 Overlook Ave, Washington, DC 20375 USA.
EM Igor.medintz@nrl.navy.mil
FU NSERC
FX We acknowledge the Office of Naval Research and the NRL Nanosciences
Institute. W.R.A. is grateful to NSERC for a postdoctoral fellowship.
NR 70
TC 27
Z9 27
U1 15
U2 95
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD DEC
PY 2014
VL 5
AR 5615
DI 10.1038/ncomms6615
PG 16
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AX9MA
UT WOS:000347225600001
PM 25504073
ER
PT J
AU Mabry, TJ
AF Mabry, Tristan James
TI The European Union as Crisis Manager: Patterns and Prospects
SO PERSPECTIVES ON POLITICS
LA English
DT Book Review
C1 [Mabry, Tristan James] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Mabry, TJ (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 1
TC 0
Z9 0
U1 0
U2 1
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 1537-5927
EI 1541-0986
J9 PERSPECT POLIT
JI Perspect. Polit.
PD DEC
PY 2014
VL 12
IS 4
BP 965
EP 967
DI 10.1017/S1537592714002898
PG 4
WC Political Science
SC Government & Law
GA AX1WP
UT WOS:000346734400088
ER
PT J
AU Doherty, BJ
AF Doherty, Brendan J.
TI Presidential Reelection Fundraising from Jimmy Carter to Barack Obama
SO POLITICAL SCIENCE QUARTERLY
LA English
DT Article
ID 2002 CONGRESSIONAL ELECTIONS
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Doherty, BJ (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 62
TC 0
Z9 0
U1 0
U2 0
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0032-3195
EI 1538-165X
J9 POLIT SCI QUART
JI Polit. Sci. Q.
PD WIN
PY 2014
VL 129
IS 4
BP 585
EP 612
DI 10.1002/polq.12253
PG 28
WC Political Science
SC Government & Law
GA AX1MI
UT WOS:000346710700002
ER
PT J
AU Lindley, BS
Shaw, LB
Schwartz, IB
AF Lindley, Brandon S.
Shaw, Leah B.
Schwartz, Ira B.
TI Rare-event extinction on stochastic networks
SO EPL
LA English
DT Article
ID RECURRENT EPIDEMICS; DYNAMICS; EVOLUTION; SYSTEMS; TIME
AB We consider the problem of extinction processes on random networks with a given structure. For sufficiently large well-mixed populations, the process of extinction of one or more state variable components occurs in the tail of the quasi-stationary probability distribution, thereby making it a rare event. Here we show how to extend the theory of large deviations to random networks to predict extinction times. In particular, we use the theory to find the most probable path leading to extinction. We apply the methodology to epidemic models and discover how mean extinction times scale with epidemiological and network parameters in Erdos-Renyi networks. The results are shown to compare quite well with Monte Carlo simulations of the network in predicting both the most probable paths to extinction and mean extinction times. Copyright (C) EPLA, 2014
C1 [Lindley, Brandon S.; Schwartz, Ira B.] US Naval Res Lab, Div Plasma Phys, Nonlinear Syst Dynam Sect, Washington, DC 20375 USA.
[Shaw, Leah B.] Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23187 USA.
RP Lindley, BS (reprint author), US Naval Res Lab, Div Plasma Phys, Nonlinear Syst Dynam Sect, Code 6792, Washington, DC 20375 USA.
FU NRL base funding [N0001414WX00023]; Office of Naval Research
[N0001414WX20610]; Army Research Office; National Institute of General
Medical Sciences [R01GM090204]; Air Force Office of Scientific Research
FX BSL was a National Research Council post doctoral fellow. IBS was
supported by NRL base funding (N0001414WX00023) and Office of Naval
Research (N0001414WX20610). LBS was supported by the Army Research
Office, Air Force Office of Scientific Research, and by Award No.
R01GM090204 from the National Institute of General Medical Sciences.
NR 36
TC 5
Z9 5
U1 0
U2 3
PU EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
PI MULHOUSE
PA 6 RUE DES FRERES LUMIERE, MULHOUSE, 68200, FRANCE
SN 0295-5075
EI 1286-4854
J9 EPL-EUROPHYS LETT
JI EPL
PD DEC
PY 2014
VL 108
IS 5
AR 58008
DI 10.1209/0295-5075/108/58008
PG 5
WC Physics, Multidisciplinary
SC Physics
GA AX2RR
UT WOS:000346792400040
ER
PT J
AU Kompella, S
Nguyen, GD
Kam, C
Wieselthier, JE
Ephremides, A
AF Kompella, Sastry
Nguyen, Gam D.
Kam, Clement
Wieselthier, Jeffrey E.
Ephremides, Anthony
TI Cooperation in Cognitive Underlay Networks: Stable Throughput Tradeoffs
SO IEEE-ACM TRANSACTIONS ON NETWORKING
LA English
DT Article
DE Cognitive shared channels; dominant systems; interacting queues;
multipacket reception; stable throughput; wireless networks
ID INFORMATION-THEORETIC PERSPECTIVE; MULTIPACKET RECEPTION; WIRELESS
NETWORKS; MULTIPLE-ACCESS; SLOTTED ALOHA; STABILITY; CHANNELS; PROTOCOL;
RADIO; CAPABILITY
AB This paper addresses fundamental issues in a shared channel where the users have different priority levels. In particular, we study a two-user cognitive shared channel consisting of a primary (higher-priority) and a secondary user, operating in the cognitive underlay fashion, but in a novel way where interference suffered by the primary user is compensated by requiring the secondary user to cooperatively relay some of the primary's packets. We start by analyzing the case of no node cooperation, where nodes transmit their own packets to their respective destinations. We then extend the analysis to a system in which the secondary node acts as a relay for the primary user, in addition to serving its own packets. Specifically, in the cognitive cooperation case, the secondary node forwards those packets to the primary destination that it receives successfully from the primary source. In such cognitive shared channels, a tradeoff arises in terms of activating the secondary along with the primary so that both transmissions may be successful, but with a lower probability, compared to the case of the secondary node staying idle when the primary user transmits. Results show the benefits of relaying for both the primary as well as the secondary nodes in terms of the stable-throughput region.
C1 [Kompella, Sastry; Nguyen, Gam D.; Kam, Clement] Naval Res Lab, Washington, DC 20375 USA.
[Wieselthier, Jeffrey E.] Wieselthier Res, Silver Spring, MD 20904 USA.
[Ephremides, Anthony] Univ Maryland, Elect & Comp Engn Dept, College Pk, MD 20742 USA.
[Ephremides, Anthony] Univ Maryland, Syst Res Inst, College Pk, MD 20742 USA.
RP Kompella, S (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM sastry.kompella@nrl.navy.mil; gam.nguyen@nrl.navy.mil;
Clement.Kam@nrl.navy.mil; wieselthier@itd.nrl.navy.mi; etony@umd.edu
FU ONR; OSD ASD(RE)
FX The work of S. Kompella, G. D. Nguyen, and C. Kam was supported in part
by the ONR and the OSD ASD(R&E).
NR 26
TC 4
Z9 4
U1 0
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1063-6692
EI 1558-2566
J9 IEEE ACM T NETWORK
JI IEEE-ACM Trans. Netw.
PD DEC
PY 2014
VL 22
IS 6
BP 1756
EP 1768
DI 10.1109/TNET.2013.2284788
PG 13
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods; Engineering, Electrical & Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA AX2SZ
UT WOS:000346796000005
ER
PT J
AU Morabito, MG
AF Morabito, M. G.
TI Empirical Equations for Planing Hull Bottom Pressures
SO JOURNAL OF SHIP RESEARCH
LA English
DT Article
DE planing hull; pressures; fluid-structure interaction
ID SPEED; WATER
AB Recently there has been increasing interest in the fluid structure interaction problem of planing hull bottom structure during slamming events. Significant work has been done in estimating the bottom pressures that occur during a slam and incorporating this into structural models of planing craft. In this article, empirical equations for the pressure distribution on prismatic planing hulls are developed, including both hydrostatic and hydrodynamic effects, deadrise variation, trim, and wetted length. The empirical method is based on relevant experimental measurements of planing hull bottom pressures that have been made over an 80-year period. This analysis may readily be extended to the impact problem by substitution of an equivalent planing velocity, which is discussed in the article. The end result is a closed form solution for bottom pressures on prismatic planing craft that can be rapidly calculated using a simple spreadsheet. The method is applicable for deadrise angles from 0 degrees to 40 degrees, trim angles up to 30 degrees, and wetted lengths up to five beams. This wide range of parameters is significantly larger than most current models. The empirical method is modular, allowing for substitution of more accurate formulae as more data become available in the future.
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Morabito, MG (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
FU Office of Naval Research, Atlantic Center for the Innovative Design and
Control of Small Ships [N00014-10-1-065]
FX I thank Dr. Raju Datla and Dr. Daniel Savitsky of Stevens Institute of
Technology for consistent support and guidance throughout this project.
This project was partially funded by the Office of Naval Research,
Atlantic Center for the Innovative Design and Control of Small Ships,
Award #N00014-10-1-065, Project Manager Kelly Cooper.
NR 22
TC 4
Z9 4
U1 1
U2 8
PU SOC NAVAL ARCHITECTS MARINE ENGINEERS
PI JERSEY CITY
PA 601 PAVONIA AVENUE, JERSEY CITY, NJ 07306 USA
SN 0022-4502
EI 1542-0604
J9 J SHIP RES
JI J. Ship Res.
PD DEC
PY 2014
VL 58
IS 4
BP 185
EP 200
DI 10.5957/JOSR.58.4.140006
PG 16
WC Engineering, Marine; Engineering, Civil
SC Engineering
GA AX4GZ
UT WOS:000346892800001
ER
PT J
AU Fromille, S
Phillips, J
AF Fromille, Samuel
Phillips, Jonathan
TI Super Dielectric Materials
SO MATERIALS
LA English
DT Article
DE capacitor; dielectric; energy
ID IRON PENTACARBONYL DECOMPOSITION; BARIUM-TITANATE CERAMICS; BATIO3-NI
COMPOSITES; CRITICAL-BEHAVIOR; CONSTANT; WATER; ADSORPTION; FIELD;
SUPERCAPACITOR; ENHANCEMENT
AB Evidence is provided here that a class of materials with dielectric constants greater than 10(5) at low frequency (<10(-2) Hz), herein called super dielectric materials (SDM), can be generated readily from common, inexpensive materials. Specifically it is demonstrated that high surface area alumina powders, loaded to the incipient wetness point with a solution of boric acid dissolved in water, have dielectric constants, near 0 Hz, greater than 4 x 10(8) in all cases, a remarkable increase over the best dielectric constants previously measured for energy storage capabilities, ca. 1 x 10(4). It is postulated that any porous, electrically insulating material (e.g., high surface area powders of silica, titania, etc.), filled with a liquid containing a high concentration of ionic species will potentially be an SDM. Capacitors created with the first generated SDM dielectrics (alumina with boric acid solution), herein called New Paradigm Super (NPS) capacitors display typical electrostatic capacitive behavior, such as increasing capacitance with decreasing thickness, and can be cycled, but are limited to a maximum effective operating voltage of about 0.8 V. A simple theory is presented: Water containing relatively high concentrations of dissolved ions saturates all, or virtually all, the pores (average diameter 500 angstrom) of the alumina. In an applied field the positive ionic species migrate to the cathode end, and the negative ions to the anode end of each drop. This creates giant dipoles with high charge, hence leading to high dielectric constant behavior. At about 0.8 V, water begins to break down, creating enough ionic species to "short" the individual water droplets. Potentially NPS capacitor stacks can surpass "supercapacitors" in volumetric energy density.
C1 [Fromille, Samuel; Phillips, Jonathan] Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
RP Phillips, J (reprint author), Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
EM sfromille@gmail.com; jphillip@nps.edu
FU Energy Expeditionary Office of the US Marine Corporation
FX Partial support for this work was obtained from the Energy Expeditionary
Office of the US Marine Corporation.
NR 40
TC 6
Z9 6
U1 8
U2 91
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 1996-1944
J9 MATERIALS
JI Materials
PD DEC
PY 2014
VL 7
IS 12
BP 8197
EP 8212
DI 10.3390/ma7128197
PG 16
WC Materials Science, Multidisciplinary
SC Materials Science
GA AX2TG
UT WOS:000346796800035
ER
PT J
AU Piepmeier, JA
Firebaugh, S
Olsen, CS
AF Piepmeier, Jenelle Armstrong
Firebaugh, Samara
Olsen, Caitlin S.
TI Uncalibrated Visual Servo Control of Magnetically Actuated Microrobots
in a Fluid Environment
SO MICROMACHINES
LA English
DT Article
DE microelectromechanical devices; microrobots; uncalibrated visual
servoing
ID DIMENSIONS; SURFACES
AB Microrobots have a number of potential applications for micromanipulation and assembly, but also offer challenges in power and control. This paper describes an uncalibrated vision-based control system for magnetically actuated microrobots operating untethered at the interface between two immiscible fluids. The microrobots are 20 mu m thick and approximately 100-200 mu m in lateral dimension. Several different robot shapes are investigated. The robots and fluid are in a 20 x 20 x 15 mm vial placed at the center of four electromagnets. Pulse width modulation of the electromagnet currents is used to control robot speed and direction. Given a desired position, a controller based on recursive least square estimation drives the microrobot to the goal without a priori knowledge of system parameters such as drag coefficients or intrinsic and extrinsic camera parameters. Results are verified experimentally using a variety of microrobot shapes and system configurations.
C1 [Piepmeier, Jenelle Armstrong; Firebaugh, Samara; Olsen, Caitlin S.] US Naval Acad, Annapolis, MD 21402 USA.
RP Piepmeier, JA (reprint author), US Naval Acad, 105 Maryland Ave, Annapolis, MD 21402 USA.
EM piepmeie@usna.edu; firebaug@usna.edu; caitlinolsen.co@gmail.com
NR 28
TC 1
Z9 2
U1 1
U2 16
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 2072-666X
J9 MICROMACHINES-BASEL
JI Micromachines
PD DEC
PY 2014
VL 5
IS 4
BP 797
EP 813
DI 10.3390/mi5040797
PG 17
WC Nanoscience & Nanotechnology; Instruments & Instrumentation
SC Science & Technology - Other Topics; Instruments & Instrumentation
GA AX2TD
UT WOS:000346796400001
ER
PT J
AU Blunt, SD
Mccormick, P
Higgins, T
Rangaswamy, M
AF Blunt, Shannon D.
Mccormick, Patrick
Higgins, Thomas
Rangaswamy, Muralidhar
TI Physical emission of spatially-modulated radar
SO IET RADAR SONAR AND NAVIGATION
LA English
DT Article
DE MIMO radar; phase coding; modulation; spatially-modulated radar;
physical emission; arbitrary polyphase codes; spectrally well-contained
waveforms; time-varying beampattern; MIMO radar; fixational eye
movement; human eye; visual acuity enhancement; frequency-diverse array;
pulsed radar; spatial modulation framework; sidelobe levels; angle
domains; delay domains; spectral content; joint delay-angle emission
design criteria; cognitive radar
ID MIMO RADAR; DESIGN
AB Leveraging the recent development of a physical implementation of arbitrary polyphase codes as spectrally well-contained waveforms, the notion of spatial modulation is developed whereby a time-varying beampattern is incorporated into the physical emission of an individual pulse. This subset of the broad category of MIMO radar is inspired by the operation of fixational eye movement within the human eye to enhance visual acuity and also subsumes the notion of the frequency-diverse array for application to pulsed radar. From this spatial modulation framework, some specific emission examples are evaluated in terms of resolution and sidelobe levels for the delay and angle domains. The impact of spatial modulation upon spectral content is also considered and possible joint delay-angle emission design criteria are suggested. Simulation results of selected target arrangements demonstrate the promise of enhanced discrimination and the basis for the development of future cognitive radar capabilities that may mimic salient aspects of the visual cortex.
C1 [Blunt, Shannon D.; Mccormick, Patrick] Univ Kansas, Elect Engn & Comp Sci Dept, Lawrence, KS 66045 USA.
[Higgins, Thomas] US Naval Res Lab, Radar Div, Washington, DC 20375 USA.
[Rangaswamy, Muralidhar] US Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA.
RP Blunt, SD (reprint author), Univ Kansas, Elect Engn & Comp Sci Dept, 2335 Irving Hill Rd, Lawrence, KS 66045 USA.
EM sdblunt@ittc.ku.edu
FU Air Force Office of Scientific Research; Naval Research Laboratory -
Radar Division; Office of Naval Research
FX This work was supported in part by the Air Force Office of Scientific
Research, the Naval Research Laboratory - Radar Division, and the Office
of Naval Research base funding program. All views and opinions expressed
here are the authors' own and do not reflect the official position of
the U.S. Department of Defense.
NR 15
TC 7
Z9 7
U1 1
U2 5
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8784
EI 1751-8792
J9 IET RADAR SONAR NAV
JI IET Radar Sonar Navig.
PD DEC
PY 2014
VL 8
IS 9
BP 1234
EP 1246
DI 10.1049/iet-rsn.2014.0057
PG 13
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA AW6CG
UT WOS:000346356500029
ER
PT J
AU Fellows, M
Baylis, C
Martin, J
Cohen, L
Marks, RJ
AF Fellows, Matthew
Baylis, Charles
Martin, Joshua
Cohen, Lawrence
Marks, Robert J., II
TI Direct algorithm for the Pareto load-pull optimisation of power-added
efficiency and adjacent-channel power ratio
SO IET RADAR SONAR AND NAVIGATION
LA English
DT Article
DE Pareto optimisation; radar transmitters; power amplifiers; adaptive
radar; radio spectrum management; electromagnetic wave reflection;
adjacent channel interference; Pareto load pull optimisation; direct
optimisation algorithm; power added efficiency; adjacent channel power
ratio; adaptive radar system; spectrum requirements; power amplifier
load reflection coefficient; Pareto optimum; PAE; radar transmitter
ID MULTIOBJECTIVE OPTIMIZATION; AMPLIFIER
AB Adaptive radar systems will be required to operate in different frequency bands with spectrum requirements that will likely change both in time and with geographic region. A new algorithm is presented that allows direct optimisation of an amplifier's load reflection coefficient to find a Pareto optimum between the power-added efficiency (PAE) and adjacent-channel power ratio. Comparisons of simulation and measurement results are presented. The new algorithm's results compare well with traditionally acquired data and show consistency between the optimum values for PAE that are obtained from different starting points. Measurement comparison is performed with the previous optimisation algorithm reported by the authors, and results show that up to a 50% reduction in the number of measured experimental queries can be obtained. This translates into a significant time savings in reconfiguring a radar transmitter power amplifier.
C1 [Fellows, Matthew; Baylis, Charles; Marks, Robert J., II] Baylor Univ, Dept Elect & Comp Engn, Waco, TX 76798 USA.
[Martin, Joshua] L 3 Commun, Waco, TX USA.
[Cohen, Lawrence] US Naval Res Lab, Washington, DC USA.
RP Fellows, M (reprint author), Baylor Univ, Dept Elect & Comp Engn, Waco, TX 76798 USA.
EM Charles_Baylis@baylor.edu
FU United States Naval Research Laboratory; U.S. Naval Research Laboratory
FX This work has been funded in part by a grant from the United States
Naval Research Laboratory to Baylor University. The authors wish to
thank our NAVSEA 05H sponsor Mr. Douglas Knapman, as well as Agilent
Technologies for donation of the Advanced Design System software, and
Modelithics for donation of the simulation device model libraries used
in this work through the Modelithics University Program.; This work was
supported in part by a grant from the U.S. Naval Research Laboratory.
NR 16
TC 8
Z9 8
U1 0
U2 1
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8784
EI 1751-8792
J9 IET RADAR SONAR NAV
JI IET Radar Sonar Navig.
PD DEC
PY 2014
VL 8
IS 9
BP 1280
EP 1287
DI 10.1049/iet-rsn.2013.0235
PG 8
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA AW6CG
UT WOS:000346356500033
ER
PT J
AU Mertoguno, JS
AF Mertoguno, J. Sukarno
TI Human Decision Making Model for Autonomic Cyber Systems
SO INTERNATIONAL JOURNAL ON ARTIFICIAL INTELLIGENCE TOOLS
LA English
DT Article
DE Statistical learning; formal reasoning; hybrid statistical-formal; close
loop autonomy; real-time autonomy
AB Real-time autonomy is a key element for system which closes the loop between observation, interpretation, planning, and action, commonly found in UxV, robotics, smart vehicle technologies, automated industrial machineries, and autonomic computing. Real-time autonomic cyber system requires timely and accurate decision making and adaptive planning. Autonomic decision making understands its own state and the perceived state of its environment. It is capable of anticipating changes and future states and projecting the effects of actions into future states. Understanding of current state and the knowledge/model of the world are needed for extrapolating actions and deriving action plans. This position paper proposes a hybrid, statistical-formal approach toward achieving real-time autonomy.
C1 Off Naval Res, Arlington, VA 22203 USA.
RP Mertoguno, JS (reprint author), Off Naval Res, Arlington, VA 22203 USA.
EM sukarno.mertoguno@navy.mil
NR 4
TC 0
Z9 0
U1 1
U2 2
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0218-2130
EI 1793-6349
J9 INT J ARTIF INTELL T
JI Int. J. Artif. Intell. Tools
PD DEC
PY 2014
VL 23
IS 6
SI SI
AR 1460023
DI 10.1142/S0218213014600239
PG 6
WC Computer Science, Artificial Intelligence; Computer Science,
Interdisciplinary Applications
SC Computer Science
GA AX4OL
UT WOS:000346911500005
ER
PT J
AU Lin, YC
Chang, CYS
Ghosh, RK
Li, J
Zhu, H
Addou, R
Diaconescu, B
Ohta, T
Peng, X
Lu, N
Kim, MJ
Robinson, JT
Wallace, RM
Mayer, TS
Datta, S
Li, LJ
Robinson, JA
AF Lin, Yu-Chuan
Chang, Chih-Yuan S.
Ghosh, Ram Krishna
Li, Jie
Zhu, Hui
Addou, Rafik
Diaconescu, Bogdan
Ohta, Taisuke
Peng, Xin
Lu, Ning
Kim, Moon J.
Robinson, Jeremy T.
Wallace, Robert M.
Mayer, Theresa S.
Datta, Suman
Li, Lain-Jong
Robinson, Joshua A.
TI Atomically Thin Heterostructures Based on Single-Layer Tungsten
Diselenide and Graphene
SO NANO LETTERS
LA English
DT Article
DE direct growth; heterostructures; graphene; tungsten diselenide (WSe2);
LEED/LEEM; electron tunneling; conductive AFM
ID TRANSITION-METAL DICHALCOGENIDES; DER-WAALS HETEROSTRUCTURES; EPITAXIAL
GRAPHENE; MONOLAYER MOS2; PHOTOLUMINESCENCE; GROWTH
AB Heterogeneous engineering of two-dimensional layered materials, including metallic graphene and semiconducting transition metal dichalcogenides, presents an exciting opportunity to produce highly tunable electronic and optoelectronic systems. In order to engineer pristine layers and their interfaces, epitaxial growth of such heterostructures is required. We report the direct growth of crystalline, monolayer tungsten diselenide (WSe2) on epitaxial graphene (EG) grown from silicon carbide. Raman spectroscopy, photoluminescence, and scanning tunneling microscopy confirm high-quality WSe2 monolayers, whereas transmission electron microscopy shows an atomically sharp interface, and low energy electron diffraction confirms near perfect orientation between WSe2 and EG. Vertical transport measurements across the WSe2/EG heterostructure provides evidence that an additional barrier to carrier transport beyond the expected WSe2/EG band offset exists due to the interlayer gap, which is supported by theoretical local density of states (LDOS) calculations using self-consistent density functional theory (DFT) and nonequilibrium Greens function (NEGF).
C1 [Lin, Yu-Chuan; Robinson, Joshua A.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
[Lin, Yu-Chuan; Robinson, Joshua A.] Penn State Univ, Ctr Dimens & Layered Mat 2, University Pk, PA 16802 USA.
[Chang, Chih-Yuan S.; Li, Lain-Jong] Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan.
[Ghosh, Ram Krishna; Li, Jie; Mayer, Theresa S.; Datta, Suman] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA.
[Zhu, Hui; Addou, Rafik; Peng, Xin; Lu, Ning; Kim, Moon J.; Wallace, Robert M.] Univ Texas Dallas, Dept Mat Sci & Engn, Richardson, TX 75080 USA.
[Diaconescu, Bogdan; Ohta, Taisuke] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Robinson, Jeremy T.] Naval Res Lab, Washington, DC 20375 USA.
[Li, Lain-Jong] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal 23955, Saudi Arabia.
RP Li, LJ (reprint author), Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan.
EM lance.li@kaust.edu.sa; jrobinson@psu.edu
RI Li, Lain-Jong/D-5244-2011; Lu, Ning/H-2351-2012; Kim, Moon/A-2297-2010;
Addou, Rafik/C-8992-2013; Wallace, Robert/A-5283-2008
OI Li, Lain-Jong/0000-0002-4059-7783; Addou, Rafik/0000-0002-5454-0315;
Wallace, Robert/0000-0001-5566-4806
FU Center for Low Energy Systems Technology (LEAST); STARnet phase of the
Focus Center Research Program (FCRP), a Semiconductor Research
Corporation (SRC) program - MARCO; STARnet phase of the Focus Center
Research Program (FCRP), a Semiconductor Research Corporation (SRC)
program - DARPA; Southwest Academy on Nanoelectronics (SWAN) a SRC
center - Nanoelectronics Research Initiative; Southwest Academy on
Nanoelectronics (SWAN) a SRC center - NIST; NRL Base Programs through
the Office of Naval Research; US DOE Office of Basic Energy Sciences
(BES), Division of Materials Science and Engineering; Sandia LDRD; U.S.
Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]; Academia Sinica Taiwan; KAUST Saudi Arabia; US
[AOARD-134137]
FX The work at Penn State and UT Dallas was supported by the Center for Low
Energy Systems Technology (LEAST), one of six centers supported by the
STARnet phase of the Focus Center Research Program (FCRP), a
Semiconductor Research Corporation (SRC) program sponsored by MARCO and
DARPA. Work at UT-Dallas was also supported by the Southwest Academy on
Nanoelectronics (SWAN) a SRC center sponsored by the Nanoelectronics
Research Initiative and NIST. Device fabrication was supported by the
Pennsylvania State University Materials Research Institute
Nanofabrication Lab and the National Science Foundation Cooperative
Agreement No. ECS-0335765. J.T.R. acknowledges support by NRL Base
Programs through the Office of Naval Research. The work at SNL was
supported by the US DOE Office of Basic Energy Sciences (BES), Division
of Materials Science and Engineering and by Sandia LDRD. Sandia National
Laboratories is a multiprogram laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
for the U.S. Department of Energy's National Nuclear Security
Administration under contract DE-AC04-94AL85000. L.J.L. acknowledges the
support from Academia Sinica Taiwan, KAUST Saudi Arabia, and US
AOARD-134137. Support for the WiteC Raman system, Bruker Dimension AFM,
and nanofabrication facilities was provided by the National
Nanotechnology Infrastructure Net- work at Penn State.
NR 30
TC 37
Z9 37
U1 23
U2 286
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD DEC
PY 2014
VL 14
IS 12
BP 6936
EP 6941
DI 10.1021/nl503144a
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA AW5NY
UT WOS:000346322800029
PM 25383798
ER
PT J
AU Lin, KY
Atkinson, MP
Glazebrook, KD
AF Lin, Kyle Y.
Atkinson, Michael P.
Glazebrook, Kevin D.
TI Optimal Patrol to Uncover Threats in Time When Detection is Imperfect
SO NAVAL RESEARCH LOGISTICS
LA English
DT Article
DE surveillance; infrastructure protection; search and detection;
Lagrangian relaxation; approximate dynamic programming
ID ALLOCATION; ALGORITHMS; MODEL
AB Consider a patrol problem, where a patroller traverses a graph through edges to detect potential attacks at nodes. An attack takes a random amount of time to complete. The patroller takes one time unit to move to and inspect an adjacent node, and will detect an ongoing attack with some probability. If an attack completes before it is detected, a cost is incurred. The attack time distribution, the cost due to a successful attack, and the detection probability all depend on the attack node. The patroller seeks a patrol policy that minimizes the expected cost incurred when, and if, an attack eventually happens. We consider two cases. A random attacker chooses where to attack according to predetermined probabilities, while a strategic attacker chooses where to attack to incur the maximal expected cost. In each case, computing the optimal solution, although possible, quickly becomes intractable for problems of practical sizes. Our main contribution is to develop efficient index policiesbased on Lagrangian relaxation methodology, and also on approximate dynamic programmingwhich typically achieve within 1% of optimality with computation time orders of magnitude less than what is required to compute the optimal policy for problems of practical sizes. (c) 2014 Wiley Periodicals, Inc. Naval Research Logistics, 61: 557-576, 2014
C1 [Lin, Kyle Y.; Atkinson, Michael P.] Naval Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.
[Glazebrook, Kevin D.] Univ Lancaster, Dept Management Sci, Sch Management, Lancaster LA1 4YX, England.
RP Lin, KY (reprint author), Naval Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.
EM kylin@nps.edu
OI Glazebrook, Kevin/0000-0002-5045-0718
FU Office of Naval Research
FX This material is based upon work supported by the Office of Naval
Research. The authors thank the Associate Editor and two anonymous
reviewers for their valuable comments.
NR 24
TC 1
Z9 1
U1 0
U2 9
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0894-069X
EI 1520-6750
J9 NAV RES LOG
JI Nav. Res. Logist.
PD DEC
PY 2014
VL 61
IS 8
BP 557
EP 576
DI 10.1002/nav.21603
PG 20
WC Operations Research & Management Science
SC Operations Research & Management Science
GA AW4KU
UT WOS:000346250900001
ER
PT J
AU Suselj, K
Hogan, TF
Teixeira, J
AF Suselj, Kay
Hogan, Timothy F.
Teixeira, Joao
TI Implementation of a Stochastic Eddy-Diffusivity/Mass-Flux
Parameterization into the Navy Global Environmental Model
SO WEATHER AND FORECASTING
LA English
DT Article
DE Boundary layer; Convective parameterization; Parameterization;
Stochastic models; Subgrid-scale processes
ID SHALLOW CUMULUS CONVECTION; BOUNDARY-LAYER CLOUDS; PDF-BASED MODEL;
UNIFIED PARAMETERIZATION; TURBULENCE CLOSURE; MOIST CONVECTION; PART II;
SINGLE-COLUMN; TRANSPORT; PARAMETRIZATION
AB A unified boundary layer and shallow convection parameterization based on a stochastic eddy-diffusivity/mass-flux (EDMF) approach is implemented and tested in the Navy Global Environmental Model (NAVGEM). The primary goals of this work are to improve the representation of convectively driven boundary layers and the coupling between the boundary layer and cumulus regions. Within the EDMF framework the subgrid vertical fluxes are calculated as a sum of an eddy-diffusivity part, which in the current implementation is based on the approach developed by Louis in the late 1970s, and a stochastic mass-flux parameterization. The mass-flux parameterization is a model for both dry and moist convective thermals. Dry thermals, which represent surface-forced coherent structures in a flow, provide countergradient mixing in the boundary layer and, if conditions permit, are the roots for moist thermals. Moist thermals represent shallow convective clouds. The new parameterization implemented in a single-column model (SCM) version of NAVGEM is shown to be able to realistically simulate a variety of dry and moist convective cases. The NAVGEM SCM results are validated against large-eddy-simulation results. The skill of NAVGEM as a global weather forecasting model is considerably improved with the new EDMF parameterization. The EDMF parameterization became part of the operational NAVGEM in November 2013.
C1 [Suselj, Kay; Teixeira, Joao] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Hogan, Timothy F.] Naval Res Lab, Marine Meteorol Div, Monterey, CA USA.
RP Suselj, K (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA.
EM kay.suselj@jpl.nasa.gov
FU Office of Naval Research [N0001411IP20087, N0001411IP20069,
N0001413WX20163]; National Aeronautics and Space Administration
FX We acknowledge the support provided by the Office of Naval Research,
Marine Meteorology Program, under Awards N0001411IP20087,
N0001411IP20069, and N0001413WX20163. This work was partially carried
out at the Jet Propulsion Laboratory, California Institute of
Technology, under a contract with the National Aeronautics and Space
Administration. We thank the editor and two anonymous reviewers for
their constructive comments, which helped us to improve the manuscript.
NR 43
TC 6
Z9 6
U1 5
U2 20
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0882-8156
EI 1520-0434
J9 WEATHER FORECAST
JI Weather Forecast.
PD DEC
PY 2014
VL 29
IS 6
BP 1374
EP 1390
DI 10.1175/WAF-D-14-00043.1
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AW5ZG
UT WOS:000346348800008
ER
PT J
AU Chin, J
AF Chin, John
TI Female With Asymmetrically Dilated Right Pupil
SO ANNALS OF EMERGENCY MEDICINE
LA English
DT Editorial Material
C1 Naval Med Ctr Portsmouth, Dept Emergency Med, Portsmouth, VA 23708 USA.
RP Chin, J (reprint author), Naval Med Ctr Portsmouth, Dept Emergency Med, Portsmouth, VA 23708 USA.
NR 5
TC 1
Z9 1
U1 0
U2 0
PU MOSBY-ELSEVIER
PI NEW YORK
PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0196-0644
J9 ANN EMERG MED
JI Ann. Emerg. Med.
PD DEC
PY 2014
VL 64
IS 6
BP 684
EP +
DI 10.1016/j.annemergmed.2014.04.016
PG 2
WC Emergency Medicine
SC Emergency Medicine
GA AW3YZ
UT WOS:000346220200027
PM 25454568
ER
PT J
AU Greenlee, JD
Anderson, TJ
Feigelson, BN
Hite, JK
Bussmann, KM
Eddy, CR
Hobart, KD
Kub, FJ
AF Greenlee, Jordan D.
Anderson, Travis J.
Feigelson, Boris N.
Hite, Jennifer K.
Bussmann, Konrad M.
Eddy, Charles R., Jr.
Hobart, Karl D.
Kub, Francis J.
TI Comparison of AIN encapsulants for high-temperature GaN annealing
SO APPLIED PHYSICS EXPRESS
LA English
DT Article
ID ALN ENCAPSULANT; ACTIVATION; GROWTH
AB Four different capping structures for high-temperature annealing of GaN were studied. The studied caps included a two-layer MOCVD-deposited cap and three different MOCVD + sputtered layer capping structures. After an annealing pulse of 1500 degrees C, the MOCVD cap surface roughened due to decomposition of the underlying GaN. GaN decomposition was evident via observation of thermal decomposition pits after etching of the AIN caps. It was found that the combination of an MOCVD cap with a sputtered cap greatly reduced the amount of GaN decomposition as the density of thermal etch pits decreased by 99.4%. (C) 2014 The Japan Society of Applied Physics
C1 [Greenlee, Jordan D.] US Navy, Res Lab, Natl Res Council Postdoctoral Fellow Residing, Washington, DC 20375 USA.
[Anderson, Travis J.; Feigelson, Boris N.; Hite, Jennifer K.; Bussmann, Konrad M.; Eddy, Charles R., Jr.; Hobart, Karl D.; Kub, Francis J.] Naval Res Lab, Washington, DC 20375 USA.
RP Greenlee, JD (reprint author), US Navy, Res Lab, Natl Res Council Postdoctoral Fellow Residing, Washington, DC 20375 USA.
EM jordan.greenlee.ctr@nrl.navy.mil
RI Hite, Jennifer/L-5637-2015
OI Hite, Jennifer/0000-0002-4090-0826
FU 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.
NR 19
TC 4
Z9 4
U1 1
U2 10
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1882-0778
EI 1882-0786
J9 APPL PHYS EXPRESS
JI Appl. Phys. Express
PD DEC
PY 2014
VL 7
IS 12
AR 121003
DI 10.7567/APEX.7.121003
PG 4
WC Physics, Applied
SC Physics
GA AW2MM
UT WOS:000346122300003
ER
PT J
AU Barth, M
Rayner, GB
McDonnell, S
Wallace, RM
Bennett, BR
Engel-Herbert, R
Datta, S
AF Barth, Michael
Rayner, G. Bruce, Jr.
McDonnell, Stephen
Wallace, Robert M.
Bennett, Brian R.
Engel-Herbert, Roman
Datta, Suman
TI High quality HfO2/p-GaSb(001) metal-oxide-semiconductor capacitors with
0.8 nm equivalent oxide thickness
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID GASB; HYDROGEN
AB We investigate in-situ cleaning of GaSb surfaces and its effect on the electrical performance of p-type GaSb metal-oxide-semiconductor capacitor (MOSCAP) using a remote hydrogen plasma. Ultrathin HfO2 films grown by atomic layer deposition were used as a high permittivity gate dielectric. Compared to conventional ex-situ chemical cleaning methods, the in-situ GaSb surface treatment resulted in a drastic improvement in the impedance characteristics of the MOSCAPs, directly evidencing a much lower interface trap density and enhanced Fermi level movement efficiency. We demonstrate that by using a combination of ex-situ and in-situ surface cleaning steps, aggressively scaled HfO2/p-GaSb MOSCAP structures with a low equivalent oxide thickness of 0.8 nm and efficient gate modulation of the surface potential are achieved, allowing to push the Fermi level far away from the valence band edge high up into the band gap of GaSb. (c) 2014 AIP Publishing LLC.
C1 [Barth, Michael; Datta, Suman] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA.
[Rayner, G. Bruce, Jr.] Kurt J Lesker Co, Pittsburgh, PA 15025 USA.
[McDonnell, Stephen; Wallace, Robert M.] Univ Texas Dallas, Dept Mat Sci & Engn, Richardson, TX 75080 USA.
[Bennett, Brian R.] Naval Res Lab, Washington, DC 20357 USA.
[Engel-Herbert, Roman] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
RP Engel-Herbert, R (reprint author), Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
EM rue2@psu.edu; sdatta@engr.psu.edu
RI Bennett, Brian/A-8850-2008; McDonnell, Stephen/E-1868-2011; Wallace,
Robert/A-5283-2008
OI Bennett, Brian/0000-0002-2437-4213; McDonnell,
Stephen/0000-0001-9173-2060; Wallace, Robert/0000-0001-5566-4806
FU Defense Threat Reduction Agency (DTRA) [HDTRA1-12-1-0026]
FX The authors thank Ke Wang from the Materials Research Laboratory at The
Pennsylvania State University for his help with transmission electron
microscopy. This work was supported by the Defense Threat Reduction
Agency (DTRA) under Award No. HDTRA1-12-1-0026.
NR 25
TC 9
Z9 9
U1 0
U2 39
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD DEC 1
PY 2014
VL 105
IS 22
AR 222103
DI 10.1063/1.4903068
PG 5
WC Physics, Applied
SC Physics
GA AW4QH
UT WOS:000346265200039
ER
PT J
AU Kindberg, AA
Bendriem, RM
Spivak, CE
Chen, J
Handreck, A
Lupica, CR
Liu, J
Freed, WJ
Lee, CT
AF Kindberg, Abigail A.
Bendriem, Raphael M.
Spivak, Charles E.
Chen, Jia
Handreck, Annelie
Lupica, Carl R.
Liu, Jinny
Freed, William J.
Lee, Chun-Ting
TI An in vitro model of human neocortical development using pluripotent
stem cells: cocaine-induced cytoarchitectural alterations
SO DISEASE MODELS & MECHANISMS
LA English
DT Article
DE Neocortical development; Dorsal forebrain model; hPSCs; Cocaine;
Premature neuronal differentiation
ID DEVELOPING CEREBRAL-CORTEX; NEUROTROPHIC FACTOR; SIGMA-1 RECEPTOR;
LAMINAR FATE; INTERNEURONS; NEURONS; PROLIFERATION; INHIBITION; MONKEY;
MOUSE
AB Neocortical development involves ordered specification of forebrain cortical progenitors to various neuronal subtypes, ultimately forming the layered cortical structure. Modeling of this process using human pluripotent stem cells (hPSCs) would enable mechanistic studies of human neocortical development, while providing new avenues for exploration of developmental neocortical abnormalities. Here, we show that preserving hPSCs aggregates - allowing embryoid body formation - while adding basic fibroblast growth factor (bFGF) during neuroepithelial development generates neural rosettes showing dorsal forebrain identity, including Mash1(+) dorsal telencephalic GABAergic progenitors. Structures that mirrored the organization of the cerebral cortex formed after rosettes were seeded and cultured for 3 weeks in the presence of FGF18, BDNF and NT3. Neurons migrated along radial glia scaffolding, with deep-layer CTIP2(+) cortical neurons appearing after 1 week and upper-layer SATB2(+) cortical neurons forming during the second and third weeks. At the end of differentiation, these structures contained both glutamatergic and GABAergic neurons, with glutamatergic neurons being most abundant. Thus, this differentiation protocol generated an hPSC-based model that exhibits temporal patterning and a neuronal subtype ratio similar to that of the developing human neocortex. This model was used to examine the effects of cocaine during neocorticogenesis. Cocaine caused premature neuronal differentiation and enhanced neurogenesis of various cortical neuronal subtypes. These cocaine-induced changes were inhibited by the cytochrome P450 inhibitor cimetidine. This in vitro model enables mechanistic studies of neocorticogenesis, and can be used to examine the mechanisms through which cocaine alters the development of the human neocortex.
C1 [Kindberg, Abigail A.; Bendriem, Raphael M.; Spivak, Charles E.; Chen, Jia; Lupica, Carl R.; Freed, William J.; Lee, Chun-Ting] NIDA, Cellular Neurobiol Res Branch, Intramural Res Program, NIH,Dept Hlth & Human Serv, Baltimore, MD 21244 USA.
[Handreck, Annelie] Univ Vet Med, Dept Pharmacol Toxicol & Pharm, D-30173 Hannover, Germany.
[Liu, Jinny] US Naval Res Lab, Center Bio Mol Sci & Engn, Washington, DC 20375 USA.
RP Lee, CT (reprint author), NIDA, Cellular Neurobiol Res Branch, Intramural Res Program, NIH,Dept Hlth & Human Serv, Baltimore, MD 21244 USA.
EM clee@mail.nih.gov
FU National Institute on Drug Abuse Intramural Research Program (NIDA IRP)
FX This work was funded by the National Institute on Drug Abuse Intramural
Research Program (NIDA IRP).
NR 35
TC 3
Z9 3
U1 2
U2 20
PU COMPANY OF BIOLOGISTS LTD
PI CAMBRIDGE
PA BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE CB4 4DL,
CAMBS, ENGLAND
SN 1754-8403
EI 1754-8411
J9 DIS MODEL MECH
JI Dis. Model. Mech.
PD DEC
PY 2014
VL 7
IS 12
BP 1397
EP 1405
DI 10.1242/dmm.017251
PG 9
WC Cell Biology; Pathology
SC Cell Biology; Pathology
GA AW2AL
UT WOS:000346090500009
PM 25288682
ER
PT J
AU Felker, CC
AF Felker, Craig C.
TI Ships of Oak, Guns of Iron: The War of 1812 and the Forging of an
American Navy.
SO HISTORIAN
LA English
DT Book Review
C1 [Felker, Craig C.] US Naval Acad, Annapolis, MD 21402 USA.
RP Felker, CC (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0018-2370
EI 1540-6563
J9 HISTORIAN
JI Historian
PD WIN
PY 2014
VL 76
IS 4
BP 839
EP 840
DI 10.1111/hisn.12054_30
PG 2
WC History
SC History
GA AW3BI
UT WOS:000346160100033
ER
PT J
AU Augier, M
Knudsen, T
Mcnab, RM
AF Augier, Mie
Knudsen, Thorbjorn
McNab, Robert M.
TI Advancing the field of organizations through the study of military
organizations
SO INDUSTRIAL AND CORPORATE CHANGE
LA English
DT Article
ID PERSPECTIVE; INTEGRATION; STRATEGY; CULTURE
AB This article argues that the field of organization studies may learn from closer study of decision-making and behaviors in military organizations. It describes some of the intellectual roots of organizational studies within a strategic, military context; discusses some recent characteristics of strategic competition that organization scholars may find fruitful to study; and view some of the key contemporary challenges in military organizations through the lens of strategic organization design, a framework the builds on, and integrates, several streams of research in organizational behavior that have implications for, and influence, how organizations make strategic decisions.
C1 [Augier, Mie; McNab, Robert M.] Naval Postgrad Sch, Monterey, CA 93933 USA.
[Knudsen, Thorbjorn] Univ Southern Denmark, DK-5230 Odense M, Denmark.
RP Augier, M (reprint author), Naval Postgrad Sch, 699 Dyer Rd,Bldg 234, Monterey, CA 93933 USA.
EM maugier@nps.edu; tok@sam.sdu.dk; rmmcnab@nps.edu
NR 58
TC 0
Z9 0
U1 5
U2 8
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0960-6491
EI 1464-3650
J9 IND CORP CHANGE
JI Ind. Corp. Change
PD DEC
PY 2014
VL 23
IS 6
BP 1417
EP 1444
DI 10.1093/icc/dtt059
PG 28
WC Business; Economics; Management
SC Business & Economics
GA AW1FM
UT WOS:000346035800002
ER
PT J
AU Choi, SR
Faucett, DC
Alexander, DJ
AF Choi, Sung R.
Faucett, D. Calvin
Alexander, Donald J.
TI Foreign Object Damage by Spherical Steel Projectiles in an N720/Alumina
Oxide/Oxide Ceramic Matrix Composite
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID GRADE SILICON NITRIDES; IMPACT DAMAGE; SIC/SIC COMPOSITE; FIBER
COMPOSITES; BALL PROJECTILES; PARTICLE IMPACT; BEHAVIOR; INDENTATION;
PERFORMANCE; AMBIENT
AB Foreign object-damage (FOD) phenomena of an N720/alumina oxide/oxide ceramic matrix composite (CMC), impacted by 1.59-mm spherical chrome steel projectiles up to Mach 1, were assessed at ambient temperature at a normal incidence angle in both partial and full supports. The impact damage was in the form of craters, matrix/fiber tow breakage, compaction of the material, delamination and cone cracks, and their occurrence and degree depended on both impact velocity and type of target supports. The partial support resulted in significant damage with increasing impact velocity, accompanying substantial strength degradation. The presence of tensile stress and presumably stress wave interaction at the backside of a target could have been responsible for greater impact damage in partial support. Although the CMC targets impacted at 340m/s were on the verge of being penetrated, the targets still survived catastrophic failure retaining about 68% of the as-received strength, indicative of relatively superior FOD resistance as compared to monolithic ceramic counterparts. A quasi-static analysis of impact force prediction was made based on the energy balance principle and was validated indirectly using the experimental data on frontal impact damage size.
C1 [Choi, Sung R.; Faucett, D. Calvin; Alexander, Donald J.] 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
FU Office of Naval Research
FX The authors acknowledge the continued supports by the Office of Naval
Research and Dr. David Shifler.
NR 41
TC 3
Z9 3
U1 2
U2 10
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0002-7820
EI 1551-2916
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD DEC
PY 2014
VL 97
IS 12
BP 3926
EP 3934
DI 10.1111/jace.13197
PG 9
WC Materials Science, Ceramics
SC Materials Science
GA AW2EA
UT WOS:000346099800033
ER
PT J
AU Cao, X
Li, T
Peng, M
Chen, W
Chen, GH
AF Cao, Xi
Li, Tim
Peng, Melinda
Chen, Wen
Chen, Guanghua
TI Effects of Monsoon Trough Intraseasonal Oscillation on Tropical
Cyclogenesis over the Western North Pacific
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Article
ID MADDEN-JULIAN OSCILLATION; SYNOPTIC-SCALE DISTURBANCES; PART I; CYCLONE
ACTIVITY; MODULATION; MODEL; INTENSITY; EQUATION; GENESIS; TYPHOON
AB The effects of intraseasonal oscillation (ISO) of the western North Pacific (WNP) monsoon trough on tropical cyclone (TC) formation were investigated using the Advanced Research Weather Research and Forecasting (ARW) Model. A weak vortex was specified initially and inserted into the background fields containing climatological-mean anomalies associated with active and inactive phases of monsoon trough ISOs. The diagnosis of simulations showed that monsoon trough ISO can modulate TC development through both dynamic and thermodynamic processes. The dynamic impact is attributed to the lower midtropospheric large-scale vorticity associated with monsoon trough ISO. Interactions between cyclonic vorticity in the lower middle troposphere during the active ISO phase and a vortex lead to the generation of vortex-scale outflow at the midlevel, which promotes the upward penetration of friction-induced ascending motion and thus upward moisture transport. In addition, the low-level convergence associated with active ISO also helps the upward moisture transport. Both processes contribute to stronger diabatic heating and thus promote a positive convection circulation moisture feedback. On the other hand, the large-scale flow associated with inactive ISO suppresses upward motion near the core by inducing the midlevel inflow and the divergence forcing within the boundary layer, both inhibiting TC development. The thermodynamic impact comes from greater background specific humidity associated with active ISO that allows a stronger diabatic heating. Experiments that separated the dynamic and thermodynamic impacts of the ISO showed that the thermodynamic anomaly from active ISO contributes more to TC development, while the dynamic anomalies from inactive ISO can inhibit vortex development completely.
C1 [Cao, Xi; Chen, Wen; Chen, Guanghua] Chinese Acad Sci, Ctr Monsoon Syst Res, Inst Atmospher Phys, Beijing, Peoples R China.
[Cao, Xi; Li, Tim] Univ Hawaii Manoa, IPRC, Honolulu, HI 96822 USA.
[Cao, Xi; Li, Tim] Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Honolulu, HI 96822 USA.
[Li, Tim] Nanjing Univ Informat Sci & Technol, Int Lab Climate & Environm Change, CDRC ESMC, Nanjing, Peoples R China.
[Peng, Melinda] Naval Res Lab, Monterey, CA USA.
RP Li, T (reprint author), Univ Hawaii Manoa, IPRC, 1680 East West Rd,POST Bldg 401, Honolulu, HI 96822 USA.
EM timli@hawaii.edu
RI Chen, Wen/G-6058-2011
OI Chen, Wen/0000-0001-9327-9079
FU China National 973 Project [2015CB453200]; National Natural Science
Foundation of China [41475084, 41275001]; Office of Naval Research
[N00014-1210450]; National Science Foundation [AGS-1106536];
International Pacific Research Center (IPRC) - Japan Agency for
Marine-Earth Science and Technology (JAMSTEC)
FX X.C. would like to thank Prof. Xuyang Ge for his assistance in numerical
model simulation. The authors thank the three anonymous reviewers for
helpful comments. This study was supported by China National 973 Project
2015CB453200; National Natural Science Foundation of China (Grants
41475084 and 41275001); Office of Naval Research Grant N00014-1210450;
National Science Foundation Grant AGS-1106536; and the International
Pacific Research Center (IPRC), which is sponsored by the Japan Agency
for Marine-Earth Science and Technology (JAMSTEC).
NR 43
TC 9
Z9 11
U1 2
U2 22
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-4928
EI 1520-0469
J9 J ATMOS SCI
JI J. Atmos. Sci.
PD DEC
PY 2014
VL 71
IS 12
BP 245
EP 266
DI 10.1175/JAS-D-13-0407.1
PG 22
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AU9BF
UT WOS:000345886100015
ER
PT J
AU Montgomery, MT
Abarca, SF
Smith, RK
Wu, CC
Huang, YH
AF Montgomery, Michael T.
Abarca, Sergio F.
Smith, Roger K.
Wu, Chun-Chieh
Huang, Yi-Hsuan
TI Comments on "How Does the Boundary Layer Contribute to Eyewall
Replacement Cycles in Axisymmetric Tropical Cyclones?"
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Article
ID POTENTIAL VORTICITY; PART II; DYNAMICS; MODEL; JETS; CORE
C1 [Montgomery, Michael T.; Abarca, Sergio F.] Naval Postgrad Sch, Monterey, CA 93943 USA.
[Smith, Roger K.] Univ Munich, Munich, Germany.
[Wu, Chun-Chieh; Huang, Yi-Hsuan] Natl Taiwan Univ, Dept Atmospher Sci, Taipei 10764, Taiwan.
RP Montgomery, MT (reprint author), Naval Postgrad Sch, Dept Meteorol, Root Hall,589 Dyer Rd, Monterey, CA 93943 USA.
EM mtmontgo@nps.edu
OI Wu, Chun-Chieh/0000-0002-3612-4537
FU National Science Foundation [AGS 0733380]; National Research Council
(NRC); Naval Postgraduate School (NPS) in Monterey, California; National
Science Council of Taiwan [NSC 101-2111-M-002-008-MY3]; German Research
Council (Deutsche Forschungsgemeinschaft) [SM30-23]
FX This work was supported in part by National Science Foundation Award AGS
0733380. Sergio F. Abarca gratefully acknowledges the support from the
National Research Council (NRC), through its Research Associateship
Program, and the host institution, the Naval Postgraduate School (NPS)
in Monterey, California. Chun-Chieh Wu and Yi-Hsuan Huang are supported
by the National Science Council of Taiwan through Grant NSC
101-2111-M-002-008-MY3. RKS acknowledges financial support for this
research from the German Research Council (Deutsche
Forschungsgemeinschaft) under Grant SM30-23.
NR 24
TC 6
Z9 6
U1 0
U2 3
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-4928
EI 1520-0469
J9 J ATMOS SCI
JI J. Atmos. Sci.
PD DEC
PY 2014
VL 71
IS 12
BP 288
EP 297
DI 10.1175/JAS-D-13-0286.1
PG 10
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AU9BF
UT WOS:000345886100017
ER
PT J
AU Kim, WH
Baker, C
Villalobos, G
Frantz, J
Shaw, B
Sadowski, B
Hunt, M
Aggarwal, I
Sanghera, J
AF Kim, Woohong
Baker, Colin
Villalobos, Guillermo
Frantz, Jesse
Shaw, Brandon
Sadowski, Bryan
Hunt, Michael
Aggarwal, Ishwar
Sanghera, Jasbinder
TI Highly transparent ceramics obtained from jet milled sesquioxide powders
synthesized by co-precipitation method
SO OPTICAL MATERIALS EXPRESS
LA English
DT Article
ID LASER; MICROSTRUCTURE; EFFICIENCY
AB High purity Yb3+ doped Lu2O3 powder has been synthesized by the co-precipitation method. The powders underwent a jet milling at various feed rate using a commercial jet mill machine. It is found that jet milling is very effective in breaking up of large agglomerates without cross-contamination. Median agglomerate size decreased from 8.74 mu m to 1.06 mu m when jet milled at a feed rate 0.75 lb/hr. There was no noticeable increase in impurities picked up during the jet milling process in the final powder obtained after a sacrificial run that was carried out for the purpose of conditioning the surface of the liner. Homogeneous, uniform, and highly transparent ceramic was obtained from the ceramic hot pressed with the final jet milled powder compared to the one made from as-produced powder where some defects and splotches are often observed. Transmission of the Yb3+: Lu2O3 ceramics obtained from the jet milled powder is very close to the theoretical limit, demonstrating the excellent quality of the transparent ceramic. (C) 2014 Optical Society of America
C1 [Kim, Woohong; Baker, Colin; Villalobos, Guillermo; Frantz, Jesse; Shaw, Brandon; Sanghera, Jasbinder] Naval Res Lab, Washington, DC 20375 USA.
[Sadowski, Bryan; Aggarwal, Ishwar] bSotera Def Solut, Herndon, VA 20171 USA.
[Hunt, Michael] Res Fdn, Greenbelt, MD 20770 USA.
RP Kim, WH (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM rick.kim@nrl.navy.mil
RI Baker, Colin/I-6657-2015
NR 20
TC 2
Z9 2
U1 4
U2 29
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 2159-3930
J9 OPT MATER EXPRESS
JI Opt. Mater. Express
PD DEC 1
PY 2014
VL 4
IS 12
BP 2497
EP 2503
DI 10.1364/OME.4.002497
PG 7
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA AW1EU
UT WOS:000346034100005
ER
PT J
AU Busse, LE
Florea, CM
Frantz, JA
Shaw, LB
Aggarwal, ID
Poutous, MK
Joshi, R
Sanghera, JS
AF Busse, Lynda E.
Florea, Catalin M.
Frantz, Jesse A.
Shaw, L. Brandon
Aggarwal, Ishwar D.
Poutous, Menelaos K.
Joshi, Rajendra
Sanghera, Jas S.
TI Anti-reflective surface structures for spinel ceramics and fused silica
windows, lenses and optical fibers
SO OPTICAL MATERIALS EXPRESS
LA English
DT Article
AB Anti-reflective surfaces structures (ARSS) have been successfully fabricated on fused silica windows, lenses and fibers, and spinel ceramics. The reflection loss for spinel was reduced from 7% per surface to 0.9%. For fused silica with ARSS, the reflection loss was reduced to 0.02% near 1 mu m. Pulsed laser damage thresholds at 1.06 mu m were measured and thresholds as high as 100 J/cm(2) were obtained for fused silica windows of up to 10 cm in diameter with ARSS and 850 J/cm(2) for silica fibers with ARSS on the end faces. Spinel samples with ARSS showed damage thresholds more than two times higher than that of spinel with traditional AR coatings. (C) 2014 Optical Society of America
C1 [Busse, Lynda E.; Frantz, Jesse A.; Shaw, L. Brandon; Sanghera, Jas S.] US Naval Res Lab, Washington, DC 20375 USA.
[Florea, Catalin M.; Aggarwal, Ishwar D.] Sotera Def Solut, Herndon, VA 20171 USA.
[Poutous, Menelaos K.; Joshi, Rajendra] Univ N Carolina, Charlotte, NC 28223 USA.
RP Busse, LE (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM lynda.busse@nrl.navy.mil
FU Joint Technology Office for High Energy Lasers (JTO-HEL)
FX The authors acknowledge support for this work from the Joint Technology
Office for High Energy Lasers (JTO-HEL) and some of the ARSS fabrication
as provided by TelAztec, Inc. and the laser damage testing conducted by
Spica Technologies, Inc.
NR 11
TC 11
Z9 11
U1 0
U2 16
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 2159-3930
J9 OPT MATER EXPRESS
JI Opt. Mater. Express
PD DEC 1
PY 2014
VL 4
IS 12
BP 2504
EP 2515
DI 10.1364/OME.4.002504
PG 12
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA AW1EU
UT WOS:000346034100006
ER
PT J
AU Fuller, ME
AF Fuller, Mark E.
TI A battery model for constant-power discharge including rate effects
SO ENERGY CONVERSION AND MANAGEMENT
LA English
DT Article
DE Battery model; State-of-charge; Rate-effect; Primary alkaline battery
ID LITHIUM-ION BATTERIES; EQUATION
AB A battery discharge model is developed to predict terminal voltage and current for a constant-power discharge. The model accounts for the impact of discharge rate on the effective capacity. The model utilizes empirically-determined coefficients, easily obtainable from product data sheets. The model is intended to provide estimates for initial predictions and system sizing; total computational and engineering costs to develop the inputs and obtain results are low. Comparison of model predictions with experimental data in the development and testing of alkaline primary cell battery packs shows good agreement. Published by Elsevier Ltd.
C1 Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Fuller, ME (reprint author), Naval Undersea Warfare Ctr, 1176 Howell St,Bldg 1302-2, Newport, RI 02841 USA.
EM mark.e.fuller1@navy.mil
OI Fuller, Mark/0000-0003-0002-0717
FU United States Department of Defense component organizations
FX This work was conducted at the Naval Undersea Warfare Center Division
Newport. All funding was provided by United States Department of Defense
component organizations.
NR 14
TC 2
Z9 2
U1 0
U2 8
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0196-8904
EI 1879-2227
J9 ENERG CONVERS MANAGE
JI Energy Conv. Manag.
PD DEC
PY 2014
VL 88
BP 199
EP 205
DI 10.1016/j.enconman.2014.08.015
PG 7
WC Thermodynamics; Energy & Fuels; Mechanics
SC Thermodynamics; Energy & Fuels; Mechanics
GA AU6PU
UT WOS:000345725400020
ER
PT J
AU Hagerott, M
AF Hagerott, Mark
TI Stuxnet and the vital role of critical infrastructure operators and
engineers
SO INTERNATIONAL JOURNAL OF CRITICAL INFRASTRUCTURE PROTECTION
LA English
DT Article
C1 US Naval Acad, Ctr Cyber Studies, Annapolis, MD 21402 USA.
RP Hagerott, M (reprint author), US Naval Acad, Ctr Cyber Studies, Annapolis, MD 21402 USA.
EM hagerott@usna.edu
NR 0
TC 10
Z9 10
U1 1
U2 12
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1874-5482
EI 2212-2087
J9 INT J CRIT INFR PROT
JI Int. J. Crit. Infrastruct. Prot.
PD DEC
PY 2014
VL 7
IS 4
BP 244
EP 246
DI 10.1016/j.ijcip.2014.09.001
PG 3
WC Computer Science, Information Systems; Engineering, Multidisciplinary
SC Computer Science; Engineering
GA AW0WS
UT WOS:000346012500004
ER
PT J
AU Chadwick, JL
Sridhara, S
Goodrich, J
Mitchell, AO
Gessler, EM
AF Chadwick, Jonathan L.
Sridhara, Shankar
Goodrich, Jennifer
Mitchell, Allen O.
Gessler, Eric M.
TI Humanitarian Otolaryngology: A Navy Hospital Ship Experience
SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY
LA English
DT Article
DE humanitarian; otolaryngology; medical mission
ID MISSIONS
AB The USNS Comfort (T-AH-20) is 1 of 2 United States Navy hospital ships. In 2011, she deployed to 9 countries in Central and South America including Jamaica, Peru, Colombia, Ecuador, Nicaragua, Guatemala, El Salvador, Costa Rica, and Haiti. Eight surgical specialties including otolaryngology were involved, for a combined total of about 150 cases per country. An advance team coordinated patients with the Host Nation to be seen for presurgical screening. Selected patients were then taken aboard the ship for surgery and recovered in either the ship's intensive care unit or ward. They were then discharged prior to ship embarkment to the next country. A total of 95 otolaryngology cases were performed during 9 mission stops. The mean number of procedures performed was 12 per country, with thyroidectomy being the most common. A wide variety of general otolaryngology procedures were performed without significant complications, markedly impacting the quality of life in these underserved countries.
C1 [Chadwick, Jonathan L.; Mitchell, Allen O.; Gessler, Eric M.] Naval Med Ctr Portsmouth, Dept Otolaryngol, Portsmouth, VA 23708 USA.
[Sridhara, Shankar; Goodrich, Jennifer] Walter Reed Natl Mil Med Ctr, Dept Otolaryngol, Bethesda, MD USA.
RP Gessler, EM (reprint author), Naval Med Ctr Portsmouth, Dept Otolaryngol, Portsmouth, VA 23708 USA.
EM eric.gessler@med.navy.mil
NR 11
TC 0
Z9 0
U1 0
U2 1
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0194-5998
EI 1097-6817
J9 OTOLARYNG HEAD NECK
JI Otolaryngol. Head Neck Surg.
PD DEC
PY 2014
VL 151
IS 6
BP 960
EP 962
DI 10.1177/0194599814549159
PG 3
WC Otorhinolaryngology; Surgery
SC Otorhinolaryngology; Surgery
GA AU8PS
UT WOS:000345859300011
PM 25193516
ER
PT J
AU Tian, LG
Dong, LT
Bhavanam, S
Phan, N
Atluri, SN
AF Tian, Longgang
Dong, Leiting
Bhavanam, Sharada
Nam Phan
Atluri, Satya N.
TI Mixed-mode fracture & non-planar fatigue analyses of cracked I-beams,
using a 3D SGBEM-FEM Alternating Method
SO THEORETICAL AND APPLIED FRACTURE MECHANICS
LA English
DT Article
DE SGBEM-FEM Alternating Method; I-beam; Stress intensity factor; Fatigue
crack growth
ID STRESS INTENSITY FACTORS; FINITE-ELEMENT; SINGULAR TRACTION; GROWTH;
ELASTICITY; MECHANICS; THICKNESS; INTEGRALS; COLUMNS; PLATES
AB In the present paper, computations of mixed mode stress intensity factor (SIF) variations along the crack front, and fatigue-crack-growth simulations, in cracked I-beams, considering different load cases and initial crack configurations, are carried out by employing the three-dimensional SGBEM (Symmetric Galerkin Boundary Element Method)-FEM (Finite Element Method) Alternating Method. For mode-I cracks in the I-beam, the computed SIFs by using the SGBEM-FEM Alternating Method are in very good agreement with available empirical solutions. The predicted fatigue life of cracked I-beams agrees well with experimental observations in the open literature. For mixed-mode cracks in the web or in the flange of the I-beams, no analytical or empirical solutions are available in the literature. Thus mixed-mode SIFs for mixed-mode web and flange cracks are presented, and non-planar fatigue growth simulations are given, as benchmark examples for future studies. Moreover, because very minimal efforts of preprocessing and very small computational burden are needed, the current SGBEM-FEM Alternating Method is very suitable for fracture and fatigue analyses of 3D structures such as I-beams. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Tian, Longgang] Tongji Univ, Coll Civil Engn, Dept Geotech Engn, Shanghai 200092, Peoples R China.
[Tian, Longgang; Bhavanam, Sharada; Atluri, Satya N.] Univ Calif Irvine, Ctr Aerosp Res & Educ, Irvine, CA USA.
[Dong, Leiting] Hohai Univ, Dept Engn Mech, Nanjing, Jiangsu, Peoples R China.
[Nam Phan] Naval Air Syst Command, Struct Div, Patuxent River, MD USA.
RP Dong, LT (reprint author), Hohai Univ, Dept Engn Mech, Nanjing, Jiangsu, Peoples R China.
EM dong.leiting@gmail.com
RI TIAN, Longgang/M-5826-2013; Dong, Leiting /D-7970-2013
OI TIAN, Longgang/0000-0003-4250-8083; Dong, Leiting /0000-0003-1460-1846
FU China Scholarship Council [201306260034]; National Basic Research
Program of China (973 Program) [2011CB013800]; New Century Excellent
Talents Project in China [NCET-12-0415]
FX The first author gratefully acknowledges the financial support of China
Scholarship Council (Grant No. 201306260034); National Basic Research
Program of China (973 Program; 2011CB013800); and New Century Excellent
Talents Project in China (NCET-12-0415).
NR 41
TC 2
Z9 2
U1 0
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-8442
EI 1872-7638
J9 THEOR APPL FRACT MEC
JI Theor. Appl. Fract. Mech.
PD DEC
PY 2014
VL 74
BP 188
EP 199
DI 10.1016/j.tafmec.2014.10.002
PG 12
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA AU6OW
UT WOS:000345723000021
ER
PT J
AU Sanabia, ER
Barrett, BS
Fine, CM
AF Sanabia, Elizabeth R.
Barrett, Bradford S.
Fine, Caitlin M.
TI Relationships between Tropical Cyclone Intensity and Eyewall Structure
as Determined by Radial Profiles of Inner-Core Infrared Brightness
Temperature
SO MONTHLY WEATHER REVIEW
LA English
DT Article
ID SATELLITE IMAGERY; OBJECTIVE SCHEME; HURRICANE VORTEX; DVORAK TECHNIQUE;
WATER-VAPOR; EVOLUTION; COMPOSITES; CONVECTION; TROPOPAUSE; TESTS
AB Radial profiles of infrared brightness temperature for 2405 different satellite observations from 14 western North Pacific tropical cyclones (TCs) from the 2012 season were analyzed and compared to intensity and changes in intensity. Four critical points along the inner core of each infrared (IR) brightness temperature (BT) profile were identified: coldest cloud top (CCT), first overshooting top (FOT), and lower (L45) and upper (U45) extent of the inner eyewall. Radial movement of the mean CCT point outward with increasing TC intensity, combined with subsequent warming of the mean L45 point with intensity, highlighted structure changes that are consistent with eye and eyewall development. When stratified by latitude and vertical wind shear, the CCT point moved radially outward for all cases, notably at higher intensities for lower-latitude TCs and at lower intensities for higher-latitude TCs. The majority of the warming of the L45 point with increasing intensity occurred for low-latitude and low-shear cases. Slopes of IR BT between the four critical points were statistically significantly negatively correlated with intensity, indicating that stronger (weaker) TCs had more (less) negative slopes of IR BT and more (less) vertical eyewall profiles. Furthermore, except in high-shear cases, the most negative correlations were found in the inner eyewall, consistent with results from recent studies based on radar reconnaissance data. Finally, 12-h changes in slope were found to lead 12-h changes in intensity most often at higher latitudes, providing evidence that changes in the secondary TC circulation may lead changes in the primary TC circulation for both strengthening and weakening TCs.
C1 [Sanabia, Elizabeth R.; Barrett, Bradford S.] US Naval Acad, Dept Oceanog, Annapolis, MD USA.
[Fine, Caitlin M.] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA.
RP Barrett, BS (reprint author), 572C Holloway Rd, Annapolis, MD 21402 USA.
EM bbarrett@usna.edu
FU American Society for Engineering Education's (ASEE) Science and
Engineering Apprenticeship Program (SEAP); Naval Academy Research
Council; Naval Academy Office of Midshipman Research
FX The authors thank Jeffrey Hawkins, Kim Richardson, and the entire
satellite group at the Naval Research Laboratory-Monterey for providing
processed MTSAT-2 satellite data for the 2012 western North Pacific
season. The authors also thank Mark DeMaria for his assistance with the
shear criteria in the SHIPS developmental data. The authors are also
grateful for the efforts of Cassandra Merino and Anna Haschert, who were
funded by the American Society for Engineering Education's (ASEE)
Science and Engineering Apprenticeship Program (SEAP), for their
assistance in the early stages of the project. Partial support for this
study was provided by the Naval Academy Research Council and the Naval
Academy Office of Midshipman Research.
NR 46
TC 5
Z9 5
U1 1
U2 12
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0027-0644
EI 1520-0493
J9 MON WEATHER REV
JI Mon. Weather Rev.
PD DEC
PY 2014
VL 142
IS 12
BP 4581
EP 4599
DI 10.1175/MWR-D-13-00336.1
PG 19
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AU8QE
UT WOS:000345860400013
ER
PT J
AU Dickens, JF
Owens, BD
Cameron, KL
Kilcoyne, K
Allred, CD
Svoboda, SJ
Sullivan, R
Tokish, JM
Peck, KY
Rue, JP
AF Dickens, Jonathan F.
Owens, Brett D.
Cameron, Kenneth L.
Kilcoyne, Kelly
Allred, C. Dain
Svoboda, Steven J.
Sullivan, Robert
Tokish, John M.
Peck, Karen Y.
Rue, John-Paul
TI Return to Play and Recurrent Instability After In-Season Anterior
Shoulder Instability A Prospective Multicenter Study
SO AMERICAN JOURNAL OF SPORTS MEDICINE
LA English
DT Article
DE glenohumeral; anterior instability; in season; return
ID ARTHROSCOPIC BANKART REPAIR; FOLLOW-UP; NONOPERATIVE TREATMENT; INDEX
WOSI; DISLOCATION; MANAGEMENT; STABILIZATION; 1ST-TIME; LESIONS; YOUNG
AB Background: There is no consensus on the optimal treatment of in-season athletes with anterior shoulder instability, and limited data are available to guide return to play.
Purpose: To examine the likelihood of return to sport and the recurrence of instability after an in-season anterior shoulder instability event based on the type of instability (subluxation vs dislocation). Additionally, injury factors and patient-reported outcome scores administered at the time of injury were evaluated to assess the predictability of eventual successful return to sport and time to return to sport during the competitive season.
Study Design: Cohort study (prognosis); Level of evidence, 2.
Methods: Over 2 academic years, 45 contact intercollegiate athletes were prospectively enrolled in a multicenter observational study to assess return to play after in-season anterior glenohumeral instability. Baseline data collection included shoulder injury characteristics and shoulder-specific patient-reported outcome scores at the time of injury. All athletes underwent an accelerated rehabilitation program without shoulder immobilization and were followed during their competitive season to assess the success of return to play and recurrent instability.
Results: Thirty-three of 45 (73%) athletes returned to sport for either all or part of the season after a median 5 days lost from competition (interquartile range, 13). Twelve athletes (27%) successfully completed the season without recurrence. Twenty-one athletes (64%) returned to in-season play and had subsequent recurrent instability including 11 recurrent dislocations and 10 recurrent subluxations. Of the 33 athletes returning to in-season sport after an instability event, 67% (22/33) completed the season. Athletes with a subluxation were 5.3 times more likely (odds ratio [OR], 5.32; 95% CI, 1.00-28.07; P = .049) to return to sport during the same season when compared with those with dislocations. Logistic regression analysis suggests that the Western Ontario Shoulder Instability Index (OR, 1.05; 95% CI, 1.00-1.09; P = .037) and Simple Shoulder Test (OR, 1.03; 95% CI, 1.00-1.05; P = .044) administered after the initial instability event are predictive of the ability to return to play. Time loss from sport after a shoulder instability event was most strongly and inversely correlated with the Simple Shoulder Test (P = .007) at the time of initial injury.
Conclusion: In the largest prospective study evaluating shoulder instability in in-season contact athletes, 27% of athletes returned to play and completed the season without subsequent instability. While the majority of athletes who return to sport complete the season, recurrent instability events are common regardless of whether the initial injury was a subluxation or dislocation.
C1 US Naval Acad, Annapolis, MD 21402 USA.
US Mil Acad, West Point, NY 10996 USA.
US Air Force Acad, Colorado Springs, CO 80840 USA.
RP Dickens, JF (reprint author), US Mil Acad, Keller Army Hosp, 3328 East Continental Rd, West Point, NY 10996 USA.
EM jon.f.dickens@gmail.com
OI Cameron, Kenneth/0000-0002-6276-4482
NR 46
TC 15
Z9 15
U1 0
U2 12
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0363-5465
EI 1552-3365
J9 AM J SPORT MED
JI Am. J. Sports Med.
PD DEC
PY 2014
VL 42
IS 12
BP 2842
EP 2850
DI 10.1177/0363546514553181
PG 9
WC Orthopedics; Sport Sciences
SC Orthopedics; Sport Sciences
GA AU4SA
UT WOS:000345600600007
PM 25378207
ER
PT J
AU Tadjer, MJ
Hobart, KD
Anderson, TJ
Feygelson, TI
Myers-Ward, RL
Koehler, AD
Calle, F
Eddy, CR
Gaskill, DK
Pate, BB
Kub, FJ
AF Tadjer, Marko J.
Hobart, Karl D.
Anderson, Travis J.
Feygelson, Tatyana I.
Myers-Ward, Rachael L.
Koehler, Andrew D.
Calle, Fernando
Eddy, Charles R., Jr.
Gaskill, D. Kurt
Pate, Bradford B.
Kub, Fritz J.
TI Thermionic-Field Emission Barrier Between Nanocrystalline Diamond and
Epitaxial 4H-SiC
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE Nanocrystalline diamond; 4H-SiC; Schottky; thermionic emission; field
emission
ID CVD
AB A novel Schottky-like rectifying heterojunction between two low-doped widebandgap semiconductors is presented. The conduction mechanism of p-type nanocrystalline diamond and n-type 4H-SiC with a near-unity ideality factor was determined via two-terminal current-voltage measurements as a function of temperature and SiC doping concentration. I-V characteristics at 300 and 510 K were fit at low forward bias with good agreement using thermionic emission theory. A wide temperature range ideality factor analysis revealed a thermionic-field rectifying barrier to low-doped and moderately doped SiC epilayers, which could lead to improved contacts for SiC-based piezoresistors, resonators, and microelectromechanical systems.
C1 [Tadjer, Marko J.; Hobart, Karl D.; Anderson, Travis J.; Feygelson, Tatyana I.; Myers-Ward, Rachael L.; Koehler, Andrew D.; Eddy, Charles R., Jr.; Gaskill, D. Kurt; Pate, Bradford B.; Kub, Fritz J.] Naval Res Lab, Washington, DC 20375 USA.
[Calle, Fernando] Univ Politecn Madrid, Inst Optoelect Syst & Microtechnol, E-28040 Madrid, Spain.
RP Tadjer, MJ (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM marko.tadjer.ctr@nrl.navy.mil
RI Pate, Bradford/B-4752-2010;
OI Pate, Bradford/0000-0002-3288-2947; CALLE GOMEZ,
FERNANDO/0000-0001-7869-6704
FU U.S. Naval Research Laboratory, Washington, DC, USA; Office of Naval
Research, Arlington, VA, USA; American Society for Engineering Education
FX This work was supported in part by the U.S. Naval Research Laboratory,
Washington, DC, USA, and in part by the Office of Naval Research,
Arlington, VA, USA. The work of M. J. Tadjer was supported by the
Post-Doctoral Fellowship Program through the American Society for
Engineering Education. The review of this letter was arranged by Editor
M. Tabib-Azar.
NR 17
TC 0
Z9 0
U1 1
U2 19
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0741-3106
EI 1558-0563
J9 IEEE ELECTR DEVICE L
JI IEEE Electron Device Lett.
PD DEC
PY 2014
VL 35
IS 12
BP 1173
EP 1175
DI 10.1109/LED.2014.2364596
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA AU4IY
UT WOS:000345575400004
ER
PT J
AU Koehler, AD
Specht, P
Anderson, TJ
Weaver, BD
Greenlee, JD
Tadjer, MJ
Porter, M
Wade, M
Dubon, OC
Hobart, KD
Weatherford, TR
Kub, FJ
AF Koehler, Andrew D.
Specht, Petra
Anderson, Travis J.
Weaver, Bradley D.
Greenlee, Jordan D.
Tadjer, Marko J.
Porter, Matthew
Wade, Michael
Dubon, Oscar C.
Hobart, Karl D.
Weatherford, Todd R.
Kub, Francis J.
TI Proton Radiation-Induced Void Formation in Ni/Au-Gated AlGaN/GaN HEMTs
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE GaN HEMT; proton irradiation; defect; reliability; schottky gate; nickel
void
ID ELECTRON-MOBILITY TRANSISTORS; IRRADIATION
AB AlGaN/GaN high-electron mobility transistors (HEMTs) were exposed to 2-MeV protons irradiation, at room temperature, up to a fluence of 6 x 10(14) H+/cm(2). Aside from degradation resulting from radiation-induced charge trapping, transmission electron microscopy and electrical measurements reveal a radiation-induced defect located at the edges of the Ni/Au Schottky gate in the proton-irradiated devices. At the edges of the Ni/Au gate, the Ni of the Ni/Au gate diffused up into the Au layer and migrated into the AlGaN barrier, leaving voids in the Ni layer at the gate edges after irradiation. These radiation-induced voids are caused by diffusion of Ni through vacancy exchange, known as the Kirkendall effect, resulting in reduced gate area and degrading the HEMT performance.
C1 [Koehler, Andrew D.; Anderson, Travis J.; Weaver, Bradley D.; Greenlee, Jordan D.; Tadjer, Marko J.; Hobart, Karl D.; Kub, Francis J.] Naval Res Lab, Washington, DC 20375 USA.
[Specht, Petra; Dubon, Oscar C.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Porter, Matthew; Wade, Michael; Weatherford, Todd R.] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Koehler, AD (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM andrew.koehler@nrl.navy.mil
OI Greenlee, Jordan/0000-0002-9244-0470
FU Defense Threat Reduction Agency [DTRA-253-HDTRA-122227]
FX This work was supported by the Defense Threat Reduction Agency under
Project DTRA-253-HDTRA-122227. The review of this letter was arranged by
Editor M. Radosavljevic.
NR 11
TC 9
Z9 10
U1 3
U2 29
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0741-3106
EI 1558-0563
J9 IEEE ELECTR DEVICE L
JI IEEE Electron Device Lett.
PD DEC
PY 2014
VL 35
IS 12
BP 1194
EP 1196
DI 10.1109/LED.2014.2363433
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA AU4IY
UT WOS:000345575400011
ER
PT J
AU Baker, BW
Brewer, LN
AF Baker, B. W.
Brewer, L. N.
TI Joining of Oxide Dispersion Strengthened Steels for Advanced Reactors
SO JOM
LA English
DT Article
ID NANOSTRUCTURED FERRITIC ALLOY; FRICTION STIR WELDS; ACTIVATION
FERRITIC/MARTENSITIC STEELS; RESEARCH-AND-DEVELOPMENT;
MECHANICAL-PROPERTIES; STRUCTURAL-MATERIALS; ODS STEELS;
TEMPERATURE-DEPENDENCE; ELECTRON-MICROSCOPY; TENSILE PROPERTIES
AB The design, manufacture, and experimental analysis of structural materials capable of operation in the high temperatures, corrosive environments, and radiation damage spectra of future reactor designs remain one of the key pacing items for advanced reactor designs. The most promising candidate structural materials are vanadium-based refractory alloys, silicon carbide composites and oxide dispersion strengthened steels. Of these, oxide dispersion strengthened steels are a likely near-term candidate to meet required demands. This paper reviews different variants of oxide dispersion strengthened steels and discusses their capability with regard to high-temperature strength, corrosion resistance, and radiation damage resistance. Additionally, joining of oxide dispersion strengthened steels, which has been cited as a limiting factor preventing their use, is addressed and reviewed. Specifically, friction stir welding of these steels is reviewed as a promising joining method for oxide dispersion strengthened steels.
C1 [Baker, B. W.] US Naval Acad, Annapolis, MD 21402 USA.
[Brewer, L. N.] Naval Postgrad Sch, Monterey, CA USA.
RP Baker, BW (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
EM bbaker@usna.edu; lnbrewer@nps.edu
RI Baker, Bradford/H-9709-2014
OI Baker, Bradford/0000-0002-1183-5586
FU Lawrence Livermore National Laboratory
FX The authors thank Lawrence Livermore National Laboratory specifically
Joe Farmer and Bassem El-Dasher for sponsorship of this review as well
as Murray Mahoney and MegaStir for assistance with friction stir welding
of samples. The authors also thank and acknowledge support from Terry
McNelley and Sarath Menon for assistance in accomplishment of
experimental analyses.
NR 91
TC 4
Z9 4
U1 1
U2 38
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
EI 1543-1851
J9 JOM-US
JI JOM
PD DEC
PY 2014
VL 66
IS 12
BP 2442
EP 2457
DI 10.1007/s11837-014-1206-6
PG 16
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
Mining & Mineral Processing
GA AU1RF
UT WOS:000345397200010
ER
PT J
AU Andrasfalvy, BK
Galinanes, GL
Huber, D
Barbic, M
Macklin, JJ
Susumu, K
Delehanty, JB
Huston, AL
Makara, JK
Medintz, IL
AF Andrasfalvy, Bertalan K.
Galinanes, Gregorio L.
Huber, Daniel
Barbic, Mladen
Macklin, John J.
Susumu, Kimihiro
Delehanty, James B.
Huston, Alan L.
Makara, Judit K.
Medintz, Igor L.
TI Quantum dot-based multiphoton fluorescent pipettes for targeted neuronal
electrophysiology
SO NATURE METHODS
LA English
DT Article
ID WHOLE-CELL RECORDINGS; CA1 PYRAMIDAL NEURONS; IN-VIVO; MAMMALIAN BRAIN
AB Targeting visually identified neurons for electrophysiological recording is a fundamental neuroscience technique; however, its potential is hampered by poor visualization of pipette tips in deep brain tissue. We describe quantum dot-coated glass pipettes that provide strong two-photon contrast at deeper penetration depths than those achievable with current methods. We demonstrated the pipettes' utility in targeted patch-clamp recording experiments and single-cell electroporation of identified rat and mouse neurons in vitro and in vivo.
C1 [Andrasfalvy, Bertalan K.; Makara, Judit K.] Hungarian Acad Sci, Inst Expt Med, MTA KOKI Lendulet Lab Neuronal Signaling, Budapest, Hungary.
[Galinanes, Gregorio L.; Huber, Daniel] Univ Geneva, Dept Basic Neurosci, Geneva, Switzerland.
[Barbic, Mladen; Macklin, John J.] Howard Hughes Med Inst, Appl Phys & Instrumentat Grp, Ashburn, VA USA.
[Susumu, Kimihiro; Huston, Alan L.] US Naval Res Lab, Div Opt Sci, Washington, DC USA.
[Susumu, Kimihiro] Sotera Def Solut, Columbia, MD USA.
[Delehanty, James B.; Medintz, Igor L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC USA.
RP Andrasfalvy, BK (reprint author), Hungarian Acad Sci, Inst Expt Med, MTA KOKI Lendulet Lab Neuronal Signaling, Budapest, Hungary.
EM andrasfalvy.bertalan@koki.mta.hu; igor.medintz@nrl.navy.mil
RI Huber, Daniel/C-2932-2013
FU Wellcome Trust [090915/Z/09/Z]; Hungarian Academy of Sciences (Lendulet)
[LP-2011-012]; Howard Hughes Medical Institute; Swiss National Science
Foundation
FX The authors acknowledge the Defense Advanced Research Projects Agency,
Naval Research Laboratory Nanosciences Institute, Defense Threat
Reduction Agency Joint Science and Technology Office MIPR B112582M and
Invitrogen for providing the 625-nm QDs. We thank G. Szabo and Z. Mate
(Institute of Experimental Medicine) for providing the CCK/DsReDt3 BAC
and PV/GFP BAC transgenic mice. We thank J. Veres, Zs. Kohus, Z.
Peterfy, N. Lenkey and E. Papp (Institute of Experimental Medicine) for
providing brain slices with fluorescently labeled neurons; A. Holtmaat
(University of Geneva) for providing the Thy-1 EGFP-M mice; and J.
Weber, A. Raksai-Maar, M. Prsa and M. Cane for technical assistance.
This work was supported in part by the Wellcome Trust (grant
090915/Z/09/Z, J.K.M. and B.K.A.), Hungarian Academy of Sciences
(Lendulet LP-2011-012, J.K.M.), Howard Hughes Medical Institute and
Swiss National Science Foundation (D.H.).
NR 22
TC 18
Z9 18
U1 6
U2 46
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1548-7091
EI 1548-7105
J9 NAT METHODS
JI Nat. Methods
PD DEC
PY 2014
VL 11
IS 12
BP 1237
EP +
DI 10.1038/NMETH.3146
PG 7
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA AU4FF
UT WOS:000345564600018
PM 25326662
ER
PT J
AU Zhao, LY
Ha, S
Sharp, KW
Geltmacher, AB
Fonda, RW
Kinsey, AH
Zhang, Y
Ryan, SM
Erdeniz, D
Dunand, DC
Hemker, KJ
Guest, JK
Weihs, TP
AF Zhao, Longyu
Ha, Seunghyun
Sharp, Keith W.
Geltmacher, Andrew B.
Fonda, Richard W.
Kinsey, Alex H.
Zhang, Yong
Ryan, Stephen M.
Erdeniz, Dinc
Dunand, David C.
Hemker, Kevin J.
Guest, James K.
Weihs, Timothy P.
TI Permeability measurements and modeling of topology-optimized metallic
3-D woven lattices
SO ACTA MATERIALIA
LA English
DT Article
DE 3-D woven lattices; Permeability; Topology optimization; Finite-element
modeling; X-ray tomography
ID HEAT-TRANSFER; CELLULAR METAL; MECHANICAL-PROPERTIES; COMPRESSIVE
BEHAVIOR; PACK-ALUMINIZATION; FLUID PERMEABILITY; SANDWICH PANELS;
SCAFFOLD DESIGN; FOAMS; FLOW
AB Topology optimization was combined with a 3-D weaving technique to design and fabricate structures with optimized combinations of fluid permeability and mechanical stiffness. Two different microarchitected structures are considered: one is a "standard" weave in which all wires were included, while the other is termed an "optimized" weave as specific wires were removed to maximize the permeability of the resulting porous materials with only a limited reduction in stiffness. Permeability was measured and predicted for both structures that were 3-D woven with either Cu or Ni-20Cr wires. The as-woven wires in the Cu lattices were bonded at contact points using solder or braze while the Ni-20Cr wires were bonded at contact points using pack aluminization. Permeability was measured under laminar flow conditions in all three normal directions for unbonded and bonded samples and in the optimized structure it was found to increase between 200% and 600%, depending on direction, over the standard structures. Permeability was also predicted using finite-element modeling with as-fabricated wires positions that were identified with optical microscopy or X-ray tomography; the measurements and predictions show good agreement. Lastly, the normalized permeability values significantly exceed those found for stochastic, metallic foams and other periodic structures with a material volume fraction of over 30%. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Zhao, Longyu; Kinsey, Alex H.; Ryan, Stephen M.; Hemker, Kevin J.; Weihs, Timothy P.] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA.
[Ha, Seunghyun; Guest, James K.] Johns Hopkins Univ, Dept Civil Engn, Baltimore, MD 21218 USA.
[Sharp, Keith W.] SAERTEX USA LLC, Huntersville, NC 28078 USA.
[Geltmacher, Andrew B.; Fonda, Richard W.] US Navy, Res Lab, Multifunct Mat Branch, Washington, DC 20375 USA.
[Zhang, Yong; Hemker, Kevin J.; Weihs, Timothy P.] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA.
[Erdeniz, Dinc; Dunand, David C.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
RP Zhao, LY (reprint author), Johns Hopkins Univ, Dept Mat Sci & Engn, 3400 N Charles St, Baltimore, MD 21218 USA.
EM longyu@jhu.edu
RI Weihs, Timothy/A-3313-2010; Dunand, David/B-7515-2009; Erdeniz,
Dinc/E-8871-2010; Guest, James/A-1943-2010
OI Erdeniz, Dinc/0000-0002-8705-7282; Guest, James/0000-0002-6468-8890
FU Defense Advanced Research Projects Agency (DARPA)-Materials with
Controlled Microstructural Architecture (MCMA) [W91CRB1010004]
FX This work was funded by the Defense Advanced Research Projects Agency
(DARPA)-Materials with Controlled Microstructural Architecture (MCMA),
under award no. W91CRB1010004 (Dr. Judah Goldwasser, program manager).
The authors would like to thank Mr. Wesley Cohen for assistance during
permeability testing, and Mike Franckowiak and Frank Cook for machining
test fixtures.
NR 57
TC 9
Z9 9
U1 7
U2 47
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 DEC
PY 2014
VL 81
BP 326
EP 336
DI 10.1016/j.actamat.2014.08.037
PG 11
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA AT8JM
UT WOS:000345179800032
ER
PT J
AU Chun, C
Neta, B
Kim, S
AF Chun, Changbum
Neta, Beny
Kim, Sujin
TI ON JARRATT'S FAMILY OF OPTIMAL FOURTH-ORDER ITERATIVE METHODS AND THEIR
DYNAMICS
SO FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY
LA English
DT Article
DE Iterative Methods; Order of Convergence; Weight Functions; Simple Roots
ID MULTIPLE ROOTS; EQUATIONS
AB P. Jarratt has developed a family of fourth-order optimal methods. He suggested two members of the family. The dynamics of one of those was discussed previously. Here we show that the family can be written using a weight function and analyze all members of the family to find the best performer.
C1 [Chun, Changbum; Kim, Sujin] Sungkyunkwan Univ, Dept Math, Suwon 440746, South Korea.
[Neta, Beny] US Navy, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
RP Neta, B (reprint author), US Navy, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
EM cbchun@skku.edu; bneta@nps.edu; sjylover012@hanmail.net
FU 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).
NR 18
TC 14
Z9 14
U1 0
U2 2
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0218-348X
EI 1793-6543
J9 FRACTALS
JI Fractals-Complex Geom. Patterns Scaling Nat. Soc.
PD DEC
PY 2014
VL 22
IS 4
AR 1450013
DI 10.1142/S0218348X14500133
PG 16
WC Mathematics, Interdisciplinary Applications; Multidisciplinary Sciences
SC Mathematics; Science & Technology - Other Topics
GA AT7BK
UT WOS:000345091000007
ER
PT J
AU Rockafellar, RT
Royset, JO
AF Rockafellar, R. T.
Royset, J. O.
TI Random variables, monotone relations, and convex analysis
SO MATHEMATICAL PROGRAMMING
LA English
DT Article
DE Random variables; Quantiles; Superquantiles; Superexpectations;
Superdistributions; Convergence in distribution; Stochastic dominance;
Comonotonicity; Measures of risk; Value-at-risk;
Conditional-value-at-risk; Convex analysis; Conjugate duality;
Stochastic optimization
ID MEAN-RISK MODELS; VALUE-AT-RISK; STOCHASTIC-DOMINANCE; REGRESSION;
OPTIMIZATION
AB Random variables can be described by their cumulative distribution functions, a class of nondecreasing functions on the real line. Those functions can in turn be identified, after the possible vertical gaps in their graphs are filled in, with maximal monotone relations. Such relations are known to be the subdifferentials of convex functions. Analysis of these connections yields new insights. The generalized inversion operation between distribution functions and quantile functions corresponds to graphical inversion of monotone relations. In subdifferential terms, it corresponds to passing to conjugate convex functions under the Legendre-Fenchel transform. Among other things, this shows that convergence in distribution for sequences of random variables is equivalent to graphical convergence of the monotone relations and epigraphical convergence of the associated convex functions. Measures of risk that employ quantiles (VaR) and superquantiles (CVaR), either individually or in mixtures, are illuminated in this way. Formulas for their calculation are seen from a perspective that reveals how they were discovered. The approach leads further to developments in which the superquantiles for a given distribution are interpreted as the quantiles for an overlying "superdistribution." In this way a generalization of Koenker-Basset error is derived which lays a foundation for superquantile regression as a higher-order extension of quantile regression.
C1 [Rockafellar, R. T.] Univ Washington, Seattle, WA 98195 USA.
[Royset, J. O.] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Royset, JO (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
EM rtr@uw.edu; joroyset@nps.edu
FU Air Force Office of Scientific Research [FA9550-11-1-0206,
F1ATAO1194GOO1]
FX This work was supported by the Air Force Office of Scientific Research
under Grants FA9550-11-1-0206 and F1ATAO1194GOO1.
NR 26
TC 3
Z9 3
U1 1
U2 9
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 0025-5610
EI 1436-4646
J9 MATH PROGRAM
JI Math. Program.
PD DEC
PY 2014
VL 148
IS 1-2
BP 297
EP 331
DI 10.1007/s10107-014-0801-1
PG 35
WC Computer Science, Software Engineering; Operations Research & Management
Science; Mathematics, Applied
SC Computer Science; Operations Research & Management Science; Mathematics
GA AT3BK
UT WOS:000344809700012
ER
PT J
AU Medynets, K
Solomyak, B
AF Medynets, Konstantin
Solomyak, Boris
TI Second-order ergodic theorem for self-similar tiling systems
SO ERGODIC THEORY AND DYNAMICAL SYSTEMS
LA English
DT Article
ID INVARIANT-MEASURES; SUBSTITUTION TILINGS; BRATTELI DIAGRAMS;
TRANSFORMATIONS; SUBSHIFTS; DYNAMICS; DENSITY; GRAPH; SETS
AB We consider infinite measure-preserving non-primitive self-similar tiling systems in Euclidean space R-d. We establish the second-order ergodic theorem for such systems, with exponent equal to the Hausdorff dimension of a graph-directed self-similar set associated with the substitution rule.
C1 [Medynets, Konstantin] US Naval Acad, Dept Math, Annapolis, MD 21402 USA.
[Solomyak, Boris] Univ Washington, Dept Math, Seattle, WA 98195 USA.
RP Medynets, K (reprint author), US Naval Acad, Dept Math, Annapolis, MD 21402 USA.
EM medynets@usna.edu; solomyak@uw.edu
FU NSF [DMS-0968879]
FX We are grateful to Karl Petersen, who asked whether the second-order
ergodic theorem holds for the Sierpinski gasket tiling system and who
told us about Fisher's paper [Fi]. We would also like to thank the
referee for his/her valuable comments. B. S. is supported in part by NSF
grant DMS-0968879.
NR 31
TC 0
Z9 0
U1 0
U2 2
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0143-3857
EI 1469-4417
J9 ERGOD THEOR DYN SYST
JI Ergod. Theory Dyn. Syst.
PD DEC
PY 2014
VL 34
BP 2018
EP 2053
DI 10.1017/etds.2013.27
PN 6
PG 36
WC Mathematics, Applied; Mathematics
SC Mathematics
GA AS7UH
UT WOS:000344459600014
ER
PT J
AU Romano, A
Guo, J
Prokscha, T
Meyer, T
Hirsch, S
Braun, J
Sack, I
Scheel, M
AF Romano, Anthony
Guo, Jing
Prokscha, Torben
Meyer, Thomas
Hirsch, Sebastian
Braun, Juergen
Sack, Ingolf
Scheel, Michael
TI In Vivo Waveguide Elastography: Effects of Neurodegeneration in Patients
with Amyotrophic Lateral Sclerosis
SO MAGNETIC RESONANCE IN MEDICINE
LA English
DT Article
DE amyotrophic lateral sclerosis; magnetic resonance elastography;
diffusion tensor imaging; anisotropic inversions; white matter tracts;
waveguide elastography
ID MAGNETIC-RESONANCE ELASTOGRAPHY; DIFFUSION-TENSOR MRI; WHITE-MATTER;
BRAIN VISCOELASTICITY; MECHANICAL-PROPERTIES; CORTICOSPINAL TRACT;
STIFFNESS; DIAGNOSIS; TISSUE; SHEAR
AB PurposeWaveguide elastography (WGE) combines magnetic resonance elastography (MRE), diffusion tensor imaging (DTI), and anisotropic inversions for a determination of the elastic properties of white matter. Previously, the method evaluated the anisotropic elastic properties of the corticospinal tracts (CSTs) of healthy volunteers. Here, the sensitivity of WGE is tested for the detection of pathologic changes in a cohort of patients with Amyotrophic Lateral Sclerosis (ALS).
MethodsMRE and DTI were performed in 14 patients with ALS and 14 healthy, age-matched controls. A comparison was made between three components from WGE and the DTI metrics FA, MD, PD, and RD, for the detection of differences between patients and controls. It was hypothesized that the stiffness values in the CSTs of the patients would be significantly lower due to the known neurodegeneration associated with ALS.
ResultsTwo anisotropic shear moduli polarized parallel and perpendicular to the CSTs were significantly reduced in ALS patients (P < 0.0001), whereas the anisotropic longitudinal modulus polarized parallel to the CSTs showed no significant differences.
ConclusionThe results of this study suggest a relatively high sensitivity of two anisotropic shear moduli as noninvasive metrics for the assessment of neuronal degeneration within the CSTs. Magn Reson Med 72:1755-1761, 2014. (c) 2013 Wiley Periodicals, Inc.
C1 [Romano, Anthony] Naval Res Lab, Washington, DC USA.
[Guo, Jing; Hirsch, Sebastian; Sack, Ingolf; Scheel, Michael] Charite, Dept Radiol, D-13353 Berlin, Germany.
[Prokscha, Torben; Meyer, Thomas] Charite, Dept Neurol, D-13353 Berlin, Germany.
[Braun, Juergen] Charite, Inst Med Informat, D-13353 Berlin, Germany.
RP Romano, A (reprint author), 4555 Overlook Ave,Code 7130, Washington, DC 20375 USA.
EM anthony.romano@nrl.navy.mil
FU Volkswagen Foundation and Charite Foundation
FX Grant sponsors: Office of Naval Research, Friedrich C. Luft Clinical
Scientist Pilot Program (funded by Volkswagen Foundation and Charite
Foundation).
NR 43
TC 8
Z9 8
U1 0
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0740-3194
EI 1522-2594
J9 MAGN RESON MED
JI Magn. Reson. Med.
PD DEC
PY 2014
VL 72
IS 6
BP 1755
EP 1761
DI 10.1002/mrm.25067
PG 7
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA AT2XS
UT WOS:000344798300027
PM 24347290
ER
PT J
AU Thuillier, G
Schmidtke, G
Erhardt, C
Nikutowski, B
Shapiro, AI
Bolduc, C
Lean, J
Krivova, N
Charbonneau, P
Cessateur, G
Haberreiter, M
Melo, S
Delouille, V
Mampaey, B
Yeo, KL
Schmutz, W
AF Thuillier, G.
Schmidtke, G.
Erhardt, C.
Nikutowski, B.
Shapiro, A. I.
Bolduc, C.
Lean, J.
Krivova, N.
Charbonneau, P.
Cessateur, G.
Haberreiter, M.
Melo, S.
Delouille, V.
Mampaey, B.
Yeo, K. L.
Schmutz, W.
TI Solar Spectral Irradiance Variability in November/December 2012:
Comparison of Observations by Instruments on the International Space
Station and Models
SO SOLAR PHYSICS
LA English
DT Article
DE Spectral solar irradiance variability; International Space Station;
SOLSPEC; SolACES; Solar Modeling
ID MG-II INDEX; EUV IRRADIANCE; ULTRAVIOLET; ATMOSPHERE; CALIBRATION;
MINIMUM; MONITOR; CLIMATE; DESIGN; SORCE
AB Onboard the International Space Station (ISS), two instruments are observing the solar spectral irradiance (SSI) at wavelengths from 16 to 2900 nm. Although the ISS platform orientation generally precludes pointing at the Sun more than 10 -aEuro parts per thousand 14 days per month, in November/December 2012 a continuous period of measurements was obtained by implementing an ISS 'bridging' maneuver. This enabled observations to be made of the solar spectral irradiance (SSI) during a complete solar rotation. We present these measurements, which quantify the impact of active regions on SSI, and compare them with data simultaneously gathered from other platforms, and with models of spectral irradiance variability. Our analysis demonstrates that the instruments onboard the ISS have the capability to measure SSI variations consistent with other instruments in space. A comparison among all available SSI measurements during November-December 2012 in absolute units with reconstructions using solar proxies and observed solar activity features is presented and discussed in terms of accuracy.
C1 [Thuillier, G.] LATMOS CNRS, F-78280 Guyancourt, France.
[Schmidtke, G.; Erhardt, C.; Nikutowski, B.] Fraunhofer Inst Phys Measurement Tech, D-79110 Freiburg, Germany.
[Nikutowski, B.] Univ Leipzig, Inst Meteorol, D-04103 Leipzig, Germany.
[Shapiro, A. I.; Cessateur, G.; Haberreiter, M.; Schmutz, W.] World Radiat Ctr, Phys Meteorol Observ Davos, CH-7260 Davos, Switzerland.
[Bolduc, C.; Charbonneau, P.] Univ Montreal, Dept Phys, Montreal, PQ H2C 3J7, Canada.
[Lean, J.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Krivova, N.; Yeo, K. L.] Max Planck Inst Sonnensyst Forsch, Gottigen, Germany.
[Melo, S.] Univ Toronto, Dept Phys, Toronto, ON, Canada.
[Delouille, V.; Mampaey, B.] Solar Terr Ctr Excellence, Brussels, Belgium.
[Delouille, V.; Mampaey, B.] Royal Observ Belgium, Brussels, Belgium.
RP Thuillier, G (reprint author), LATMOS CNRS, 11 Blvd Alembert, F-78280 Guyancourt, France.
EM gerard.thuillier@latmos.ipsl.fr
RI Schmutz, Werner/B-4153-2014
OI Schmutz, Werner/0000-0003-1159-5639
FU Centre National d'Etudes Spatiales (France); Centre National de la
Recherche Scientifique (France); Federal Office for Scientific,
Technical and Cultural Affairs (Belgium); Bundesministerium fur
Forschung und Technologie (Germany); DLR; ESA; Fraunhofer Gesellschaft;
Swiss National Science Foundation [CRSI122-130642, 100020 140573]; Fond
Quebecois pour la Recherche en Nature et Technologie; European Community
[313188 (SOLID)]; FP7 programme [284461]; NASA
FX The SOLSPEC and SolACES investigations are supported by the Centre
National d'Etudes Spatiales (France), the Centre National de la
Recherche Scientifique (France), the Federal Office for Scientific,
Technical and Cultural Affairs (Belgium), and the Bundesministerium fur
Forschung und Technologie (Germany). The participating institutes are
the Service d'Aeronomie du CNRS, now LATMOS, the Institut d'Aeronomie
Spatiale de Belgique, the Fraunhofer Institute for Physical Measuring
Technique (Freiburg), and the Landessternwarte of Heidelberg. The
SOLSPEC and SolACES absolute calibrations have been carried out with the
blackbody BB3200g from the Physikalisch-Technische Bundesanstalt (PTB,
Braunschweig, Germany), and cross-calibrated at BESSY II (PTB, Berlin,
Germany), respectively. SOLAR constitutes an external payload of the ESA
COLUMBUS laboratory placed onboard the International Space Station. The
SOLAR operations are conducted by the Belgium User Support Operations
Center (B-USOC) via the COLUMBUS Control Center of DLR
(Oberpfaffenhofen, Germany). SolACES has been developed by the
Fraunhofer IPM. EADS Astrium Friedrichshafen supported the institute in
performing the qualification and documentation. The project was
sponsored by DLR, ESA, and the Fraunhofer Gesellschaft. A. I. Shapiro is
supported by the Swiss National Science Foundation under grant
CRSI122-130642 (FUPSOL) and 100020 140573. C. Bolduc and P. Charbonneau
are supported by a team grant and a doctoral fellowship from the Fond
Quebecois pour la Recherche en Nature et Technologie. We are happy to
thank J. Harder and, M. Snow and M. DeLand for providing the SIM data
and Mg II index, respectively, and B-USOC for providing the raw SOLSPEC
data used in this study. The research leading to these results has
received funding from the European Community's Seventh Framework
Programme (FP7 2012) under grant agreement No. 313188 (SOLID). G.
Cessateur is supported by the FP7 programme (eHeroes, No. 284461). J.
Lean acknowledges NASA support.
NR 52
TC 5
Z9 5
U1 0
U2 11
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-0938
EI 1573-093X
J9 SOL PHYS
JI Sol. Phys.
PD DEC
PY 2014
VL 289
IS 12
BP 4433
EP 4452
DI 10.1007/s11207-014-0588-5
PG 20
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AT0FI
UT WOS:000344612200002
ER
PT J
AU Xu, P
Qi, D
Schoelz, JK
Thompson, J
Thibado, PM
Wheeler, VD
Nyakiti, LO
Myers-Ward, RL
Eddy, CR
Gaskill, DK
Neek-Amal, M
Peeters, PM
AF Xu, P.
Qi, D.
Schoelz, J. K.
Thompson, J.
Thibado, P. M.
Wheeler, V. D.
Nyakiti, L. O.
Myers-Ward, R. L.
Eddy, C. R., Jr.
Gaskill, D. K.
Neek-Amal, M.
Peeters, P. M.
TI Multilayer graphene, Moire patterns, grain boundaries and defects
identified by scanning tunneling microscopy on the m-plane, non-polar
surface of SiC
SO CARBON
LA English
DT Article
ID EPITAXIAL GRAPHENE; SUSPENDED GRAPHENE; LAYER GRAPHENE; GRAPHITE;
TRANSPORT
AB Epitaxial graphene is grown on a non-polar n(+) 6H-SiC m-plane substrate and studied using atomic scale scanning tunneling microscopy. Multilayer graphene is found throughout the surface and exhibits rotational disorder. Moire patterns of different spatial periodicities are found, and we found that as the wavelength increases, so does the amplitude of the modulations. This relationship reveals information about the interplay between the energy required to bend graphene and the interaction energy, i.e. van der Waals energy, with the graphene layer below. Our experiments are supported by theoretical calculations which predict that the membrane topographical amplitude scales with the Moire pattern wavelength, L as L-1 + alpha L-2. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Xu, P.; Qi, D.; Schoelz, J. K.; Thompson, J.; Thibado, P. M.] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA.
[Wheeler, V. D.; Myers-Ward, R. L.; Eddy, C. R., Jr.; Gaskill, D. K.] US Naval Res Lab, Washington, DC 20375 USA.
[Nyakiti, L. O.] Texas A&M Univ, Dept Marine Engn, College Stn, TX 77843 USA.
[Nyakiti, L. O.] Texas A&M Univ, Dept Mat Sci & Engn, College Stn, TX 77843 USA.
[Neek-Amal, M.; Peeters, P. M.] Univ Antwerp, Dept Fys, B-2020 Antwerp, Belgium.
[Neek-Amal, M.] Shahid Rajaee Teacher Training Univ, Dept Phys, Tehran 16785136, Iran.
RP Thibado, PM (reprint author), Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA.
EM Thibado@uark.edu
FU ONR [N00014-10-1-0181]; NSF [DMR-0855358]; American Society for
Engineering Education; Naval Research Laboratory Postdoctoral Fellow
Program; Office of Naval Research; Flemish Science Foundation (FWO-Vl);
Methusalem Foundation of the Flemish Government; EUROgraphene project
CONGRAN; EU [299855]
FX P.X. and P.M.T. gratefully acknowledge the financial support of ONR
under grant N00014-10-1-0181 and NSF under grant DMR-0855358. L.O.N.
acknowledges the support of American Society for Engineering Education
and Naval Research Laboratory Postdoctoral Fellow Program. Work at the
U.S. Naval Research Laboratory is supported by the Office of Naval
Research. This work was supported by the Flemish Science Foundation
(FWO-Vl), the Methusalem Foundation of the Flemish Government, and the
EUROgraphene project CONGRAN. M.N.-A was supported by the EU-Marie Curie
IIF postdoc Fellowship 299855.
NR 43
TC 7
Z9 7
U1 4
U2 62
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0008-6223
EI 1873-3891
J9 CARBON
JI Carbon
PD DEC
PY 2014
VL 80
BP 75
EP 81
DI 10.1016/j.carbon.2014.08.028
PG 7
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA AS2TN
UT WOS:000344132400009
ER
PT J
AU Fonda, RW
Spanos, G
AF Fonda, Richard W.
Spanos, George
TI Effects of Cooling Rate on Transformations in a Fe-9 Pct Ni Steel
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article
ID LOW-CARBON STEEL; COALESCED BAINITE; HSLA STEELS; STRENGTH; ALLOY;
MARTENSITE; MICROSTRUCTURES; TEMPERATURE; DESIGN
AB The transformations of a high-strength 9Ni-Cr-Mo-V steel were characterized as a function of cooling rate by dilatometry, microhardness measurements, and microstructural characterization. The results demonstrate that this steel is extremely insensitive to changes in cooling rate, generating a duplex microstructure of coarse autotempered martensite within a matrix of fine lath martensite at nearly all cooling rates. The coarse autotempered martensite is observed even at very slow cooling rates, although the lath martensite becomes replaced by lath (or bainitic) ferrite.
C1 [Fonda, Richard W.; Spanos, George] Naval Res Lab, Washington, DC 20375 USA.
RP Fonda, RW (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM Richard.Fonda@nrl.navy.mil
FU Office of Naval Research
FX The authors would like to acknowledge the experimental assistance of Ed
Pierpoint and many helpful discussions with Roy Vandermeer. We also
gratefully acknowledge funding from the Office of Naval Research.
NR 42
TC 2
Z9 2
U1 2
U2 17
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
EI 1543-1940
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD DEC
PY 2014
VL 45A
IS 13
BP 5982
EP 5989
DI 10.1007/s11661-014-2588-3
PG 8
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA AS5UM
UT WOS:000344334900018
ER
PT J
AU Mungan, CE
AF Mungan, Carl E.
TI ... And hand-cranked induction
SO PHYSICS TEACHER
LA English
DT Letter
C1 [Mungan, Carl E.] US Naval Acad, Annapolis, MD 21402 USA.
RP Mungan, CE (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSN PHYSICS TEACHERS
PI COLLEGE PK
PA 5110 ROANOKE PLACE SUITE 101, COLLEGE PK, MD 20740 USA
SN 0031-921X
J9 PHYS TEACH
JI Phys. Teach.
PD DEC
PY 2014
VL 52
IS 9
BP 518
EP 518
DI 10.1119/1.4902190
PG 1
WC Physics, Multidisciplinary
SC Physics
GA CX5YM
UT WOS:000365778400002
ER
PT J
AU Warzoha, RJ
Fleischer, AS
AF Warzoha, Ronald J.
Fleischer, Amy S.
TI Improved heat recovery from paraffin-based phase change materials due to
the presence of percolating graphene networks
SO INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
LA English
DT Article
DE Paraffin; Thermal conductivity; Thermal energy storage; Graphene;
Molecular alignment
ID THERMAL-ENERGY STORAGE; CONDUCTIVITY ENHANCEMENT; CHANGE COMPOSITES;
GRAPHITE; PCM; DIFFUSIVITY; ADDITIVES; TRANSPORT; FOAMS; WAX
AB Presently, engineers are unable to fully utilize the high thermal energy storage capacities of paraffin-based phase change materials (PCMs) in electronics cooling and waste heat recovery applications due to their inherently low thermal conductivities, which result in slow melting and solidification rates. In order to increase the paraffin's thermal conductivity, several groups have implanted nanoparticles within PCMs. Despite remarkable improvements in their thermal conductivities, however, it is expected that less thermal energy can be harvested during the nanocomposite PCM's solidification period due to the removal of some PCM mass in favor of the nanoparticles. In this study, a heat exchanger system is used to extract thermal energy that has been stored within paraffin nanocomposites embedded in a thermal containment unit (TCU). We find that the amount of thermal energy that can be harnessed from MWCNT, Al or TiO2 nanocomposite PCMs (at 20 v.% concentrations) is approximately 15-17% lower than the amount that can be extracted from the base paraffin during its period of solidification, as expected. However, the amount of thermal energy that can be harnessed from paraffin in the presence of graphene nanoparticle networks (15 nm thickness, 15 mu m diameter, at 20 v.%) is found to be nearly 11% greater than for the base paraffin. Based on these results, it is posited that the paraffin's alkane molecules are beginning to align across the face of the graphene nanoparticles, resulting in a more crystalline paraffin structure at the graphene-paraffin interface and a higher absolute phase change enthalpy. Consequently, it is expected that this work will open up new avenues of research for the creation of advanced nanocomposite PCMs with exceptionally high thermal conductivities and thermal energy storage capacities. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Warzoha, Ronald J.] US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
[Fleischer, Amy S.] Villanova Univ, Dept Mech Engn, Villanova, PA 19085 USA.
RP Fleischer, AS (reprint author), Villanova Univ, Dept Mech Engn, Villanova, PA 19085 USA.
EM amy.fleischer@villanova.edu
OI Warzoha, Ronald/0000-0002-5454-4551
FU National Science Foundation [CBET1235769]; Environmental Protection
Agency; United States Environmental Protection Agency (EPA)
FX The authors appreciate the support of the National Science Foundation
(CBET1235769) and the Environmental Protection Agency Science to Achieve
Results (STAR) Fellowship. Any opinions, findings, and conclusions or
recommendations expressed in this material are those of the author(s)
and do not necessarily reflect the views of the National Science
Foundation. The research described in this paper has also been funded in
part by the United States Environmental Protection Agency (EPA) under
the Science to Achieve Results (STAR) Graduate Fellowship Program. EPA
has not officially endorsed this publication and the views expressed
herein may not reflect the views of the EPA.
NR 42
TC 9
Z9 9
U1 11
U2 79
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0017-9310
EI 1879-2189
J9 INT J HEAT MASS TRAN
JI Int. J. Heat Mass Transf.
PD DEC
PY 2014
VL 79
BP 314
EP 323
DI 10.1016/j.ijheatmasstransfer.2014.08.009
PG 10
WC Thermodynamics; Engineering, Mechanical; Mechanics
SC Thermodynamics; Engineering; Mechanics
GA AR7TE
UT WOS:000343781900031
ER
PT J
AU Wollmershauser, JA
Feigelson, BN
Gorzkowski, EP
Ellis, CT
Goswami, R
Qadri, SB
Nguyen, DD
Tischler, JG
Kub, FJ
Everett, RK
AF Wollmershauser, J. A.
Feigelson, B. N.
Gorzkowski, E. P.
Ellis, C. T.
Goswami, R.
Qadri, S. B.
Nguyen, Dat D.
Tischler, J. G.
Kub, F. J.
Everett, R. K.
TI Reply to comments on "An extended hardness limit in bulk nanoceramics",
Acta Materialia 69 (2014) 9-16
SO SCRIPTA MATERIALIA
LA English
DT Editorial Material
DE Hall-Petch; Spinel; High-pressure sintering; Nanoceramic;
Nanocrystalline ceramic
ID MECHANICAL-PROPERTIES; GRAIN-SIZE; MODEL; CERAMICS; ALUMINA; SPINEL
AB A response is provided to comments by Krell concerning the validity of the Hall-Petch relationship and the optical transmission in nanocrystalline ceramics discussed in a recent Acta Materialia paper. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
C1 [Wollmershauser, J. A.; Feigelson, B. N.; Gorzkowski, E. P.; Ellis, C. T.; Goswami, R.; Qadri, S. B.; Tischler, J. G.; Kub, F. J.; Everett, R. K.] Naval Res Lab, Washington, DC 20375 USA.
[Nguyen, Dat D.] Calif State Univ Long Beach, Long Beach, CA 90840 USA.
RP Wollmershauser, JA (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM james.wollmershauser@nrl.navy.mil; boris.feygelson@nrl.navy.mil
NR 22
TC 2
Z9 2
U1 4
U2 24
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD DEC 1
PY 2014
VL 92
BP 65
EP 68
DI 10.1016/j.scriptamat.2014.08.016
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA AR5KQ
UT WOS:000343624100018
ER
PT J
AU Jaskoski, M
AF Jaskoski, Maiah
TI Environmental Licensing and Conflict in Peru's Mining Sector: A
Path-Dependent Analysis
SO WORLD DEVELOPMENT
LA English
DT Article
DE environmental impact assessement; Latin America; path dependence; Peru;
prior consultation; resource conflict
ID LIVELIHOODS; MOVEMENTS; PROJECTS; AMERICA; BRAZIL; ANDES
AB What is the relationship between formal participatory structures and the onset and evolution of popular mobilization? Under what conditions does mobilization bring about policy and even institutional change? This article examines mining conflict and in particular the project approval stage, when mobilization is most likely to interrupt extraction in Peru. Utilizing a path-dependent framework, the paper finds that very limited spaces for community participation in the environmental impact assessment process in fact have prompted and transformed popular mobilization in extractive zones, leading to outside scrutiny and the stalling of major projects. (C) 2014 Elsevier Ltd. All rights reserved.
C1 Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Jaskoski, M (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 90
TC 7
Z9 7
U1 3
U2 20
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0305-750X
J9 WORLD DEV
JI World Dev.
PD DEC
PY 2014
VL 64
BP 873
EP 883
DI 10.1016/j.worlddev.2014.07.010
PG 11
WC Economics; Planning & Development
SC Business & Economics; Public Administration
GA AP7GP
UT WOS:000342246100064
ER
PT J
AU Stout, B
Towsley, A
AF Stout, Brian
Towsley, Adam
TI Endomorphisms of bounded height and resultant
SO JOURNAL OF NUMBER THEORY
LA English
DT Article
DE Arithmetic dynamics; Bounded height; Bounded resultant
AB Let K be an algebraic number field and B >= 1. For an endomorphism phi : P-n -> P-n defined over K of degree d let subset of O-K denote its minimal resultant ideal. For a fixed height function h(Md)(n) on the moduli space of dynamical systems this paper shows that all such morphisms phi of bounded resultant N-K/Q(R-phi) <= B and bounded height h(Md)(n) () <= B are contained in finitely many PGL(n+1) (K)-equivalence classes. This answers a question of Silverman in the affirmative. (C) 2014 Elsevier Inc. All rights reserved.
C1 [Stout, Brian] US Naval Acad, Dept Math, Annapolis, MD 21401 USA.
[Towsley, Adam] CUNY, Grad Ctr, Dept Math, New York, NY 10016 USA.
RP Towsley, A (reprint author), CUNY, Grad Ctr, Dept Math, New York, NY 10016 USA.
EM stout@usna.edu; atowsley@gc.cuny.edu
NR 4
TC 0
Z9 0
U1 0
U2 1
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0022-314X
EI 1096-1658
J9 J NUMBER THEORY
JI J. Number Theory
PD DEC
PY 2014
VL 145
BP 426
EP 432
DI 10.1016/j.jnt.2014.06.006
PG 7
WC Mathematics
SC Mathematics
GA AO8OX
UT WOS:000341615200024
ER
PT J
AU Turk, FJ
Li, L
Haddad, ZS
AF Turk, Francis Joseph
Li, Li
Haddad, Ziad S.
TI A Physically Based Soil Moisture and Microwave Emissivity Data Set for
Global Precipitation Measurement (GPM) Applications
SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
LA English
DT Article
DE Emissivity; Global Precipitation Measurement (GPM); land; microwave;
precipitation; radiometer; satellite; Tropical Rainfall Measuring
Mission (TRMM); vegetation
ID LAND-SURFACE EMISSIVITIES; PRINCIPAL COMPONENTS; UNITED-STATES; SMAP
MISSION; B-FACTOR; AMSR-E; RETRIEVAL; VEGETATION; MODEL; SYSTEM
AB The joint National Aeronautics and Space Administration and Japanese Aerospace Exploration Agency (JAXA) Global Precipitation Measurement (GPM) mission will provide considerably more observations over complex and dynamically changing land backgrounds. A physically based precipitation retrieval using GPM's satellite constellation of passive microwave (PMW) observations has to accommodate the spatially and temporally varying radiometric signature of the land surface to constrain the set of candidate rainfall solutions. The challenge for retrieval algorithms is to identify and isolate precipitation profiles whose simulated observations agree with the satellite observations and are also representative of the surface conditions. Microwave emissivity modeling results are presented from a physically based land algorithm that retrieves soil moisture, vegetation water content, and surface temperature, along with the emissivity using polarized 10, 18, and 37 GHz channel measurements from the WindSat sensor onboard the Coriolis satellite, and results from the Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI). The emissivity mean, coefficient of variation, covariance, and correlation slope are examined for the range of clear-scene surface properties observed by WindSat and TRMM between 2003-2012 and 2002-2011, respectively, under a range of seasons, time of day, rain events, etc. These joint data provide a means to examine the extent to which the surface geophysical properties control the microwave land surface emissivity covariability, to better utilize these lower frequency observations in overland PMW-based precipitation retrievals.
C1 [Turk, Francis Joseph; Haddad, Ziad S.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Li, Li] Naval Res Lab, Washington, DC 20375 USA.
RP Turk, FJ (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA.
EM jturk@jpl.nasa.gov; li.li@nrl.navy.mil
RI Measurement, Global/C-4698-2015
FU National Aeronautics and Space Administration (NASA) Precipitation
Measurement Missions (PMM); NASA
FX The authors acknowledge the support from the National Aeronautics and
Space Administration (NASA) Precipitation Measurement Missions (PMM)
through Dr. R. Kakar. TRMM data are provided courtesy of the
Precipitation Processing System at the Goddard Space Flight Center. The
authors would like to thank Dr. P. Kirstetter and Dr. J. Zhang from the
University of Oklahoma and the National Severe Storms Laboratory for
their assistance with the National Mosaic and Multi-Sensor QPE radar
processing. The authors would also like to thank Dr. Y. Tian and others
from the PMM Land Surface Working Group for the valuable comments. The
work by F. J. Turk and Z. S. Haddad was performed at the Jet Propulsion
Laboratory, California Institute of Technology, under a contract with
NASA.
NR 49
TC 7
Z9 7
U1 1
U2 53
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0196-2892
EI 1558-0644
J9 IEEE T GEOSCI REMOTE
JI IEEE Trans. Geosci. Remote Sensing
PD DEC
PY 2014
VL 52
IS 12
BP 7637
EP 7650
DI 10.1109/TGRS.2014.2315809
PG 14
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
& Photographic Technology
GA AO7KM
UT WOS:000341532100014
ER
PT J
AU Hwang, PA
Perrie, W
Zhang, B
AF Hwang, Paul A.
Perrie, William
Zhang, Biao
TI Cross-Polarization Radar Backscattering From the Ocean Surface and Its
Dependence on Wind Velocity
SO IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
LA English
DT Article
DE Cross-polarization (cross-pol); radar scattering; sea surface; wind
ID VECTOR WINDS; BAND; DEPOLARIZATION; SPEEDS
AB Recent wind retrieval algorithms using cross-polarization (cross-pol) radar sea return (VH) assume that VH is independent on the azimuth angle and mainly varies with the wind speed. Incidence angle dependence is either absent or is only in wind speeds less than 21 m/s. However, azimuth and incidence angle variations are expected since theory and data comparisons show the dominance of surface effects in the scattering mechanisms; thus, both co-polarization and cross-pol cross sections reflect the directional distribution of the ocean surface roughness and wave breaking. Here, the VH dependence on wind velocity is analyzed with special focus on the variations with the incidence and azimuth angles. The results show that, for the typical incidence angle range of radar images used for hurricane wind retrieval (20 degrees-50 degrees), the magnitude of these angular variations is equivalent to a difference of about 10 m/s in the retrieved wind speed for low-to-strong winds (< similar to 21 m/s) and probably for strong-to-severe winds (> similar to 21 m/s) as well. It is prudent to incorporate the incidence angle dependence and the azimuth angle dependence in the wind retrieval algorithm and in the signal simulation for the design of next-generation scatterometers. The dependence on the wind speed is also examined. It reconfirms that the VH sensitivity increases toward high winds, but signal saturation may occur.
C1 [Hwang, Paul A.] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Perrie, William] Fisheries & Oceans Canada, Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada.
[Zhang, Biao] Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Peoples R China.
RP Hwang, PA (reprint author), Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
EM paul.hwang@nrl.navy.mil; perriew@mar.dfo-mpo.gc.ca;
zhangbiao@nuist.edu.cn
FU Office of Naval Research ("Breaking-Wave Effects under High Winds");
Canadian Space Agency through the Government Related Initiatives
Program; Chinese National High Technology Research and Development (863)
Program [2013AA09A505]; National Science Youth Foundation of Jiangsu
[BK2012467]; Naval Research Laboratory under NRL Contribution
[NRL/JA/7260-14-0033]
FX This work was supported in part by the Office of Naval Research
("Breaking-Wave Effects under High Winds"), by the Canadian Space Agency
through the Government Related Initiatives Program, by the Chinese
National High Technology Research and Development (863) Program under
Grant 2013AA09A505, by the National Science Youth Foundation of Jiangsu
under Grant BK2012467, and by the Naval Research Laboratory under NRL
Contribution NRL/JA/7260-14-0033.
NR 21
TC 7
Z9 7
U1 0
U2 22
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1545-598X
EI 1558-0571
J9 IEEE GEOSCI REMOTE S
JI IEEE Geosci. Remote Sens. Lett.
PD DEC
PY 2014
VL 11
IS 12
BP 2188
EP 2192
DI 10.1109/LGRS.2014.2324276
PG 5
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
& Photographic Technology
GA AN9TJ
UT WOS:000340951400034
ER
PT J
AU Sidikou, A
AF Sidikou, Aissata
TI The strange destination of women in The strange destination of Wangrin
SO FRENCH FORUM
LA French
DT Article
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Sidikou, A (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 15
TC 0
Z9 0
U1 0
U2 1
PU UNIV NEBRASKA PRESS
PI LINCOLN
PA 1111 LINCOLN MALL, LINCOLN, NE 68588-0630 USA
SN 0098-9355
EI 1534-1836
J9 FR FORUM
JI Fr. Forum
PD WIN
PY 2014
VL 39
IS 1
BP 127
EP 141
PG 15
WC Literature, Romance
SC Literature
GA AM6ZZ
UT WOS:000340015800009
ER
PT J
AU Johnson, TH
AF Johnson, Thomas H.
TI The Thistle and the Drone: How America's War on Terror Became a Global
War on Tribal Islam
SO MIDDLE EAST JOURNAL
LA English
DT Book Review
C1 [Johnson, Thomas H.] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Johnson, TH (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 1
TC 0
Z9 0
U1 0
U2 22
PU MIDDLE EAST INST
PI WASHINGTON
PA 1761 N ST NW, CIRCULATION DEPT, WASHINGTON, DC 20036-2882 USA
SN 0026-3141
EI 1940-3461
J9 MIDDLE EAST J
JI Middle East J.
PD WIN
PY 2014
VL 68
IS 1
BP 181
EP 182
PG 2
WC Area Studies
SC Area Studies
GA AG2UD
UT WOS:000335271700025
ER
PT J
AU Warren, TC
AF Warren, T. Camber
TI Not by the Sword Alone: Soft Power, Mass Media, and the Production of
State Sovereignty
SO INTERNATIONAL ORGANIZATION
LA English
DT Article
ID CIVIL-WAR ONSET; INTERNATIONAL-POLITICS; CONFLICT; CAPACITY; PEACE;
SEVERITY; REBEL; UNCERTAINTY; NATIONALISM; LEGITIMACY
AB Scholars of civil conflict have long recognized the importance of state strength in the suppression of nascent insurgencies. However, previous empirical investigations have generally focused on the material and coercive dimensions of state power, obscuring the critical role played by the generation of widespread voluntary compliance through processes of political communication, that is, the production of 'soft power.' In contrast, in this article I focus on a factormass communication technologythat can enhance state capacity only by strengthening the state's ability to broadly and publicly disseminate political messages. I argue that the enhanced capacities for large-scale normative influence generated by mass communication technologies can be expected to produce substantial barriers to the mobilization of militarized challenges to state rule, by strengthening economies of scale in the marketplace of ideas. Utilizing newly compiled cross-national data on mass media accessibility in the post-World War II period, I show that densely constituted mass media systems dramatically reduce the probability of large-scale civil violence, thereby providing new evidence for the fundamental importance of nonmaterial state capacities in the suppression of internal armed conflicts.
C1 Naval Postgrad Sch, Dept Def Anal, Monterey, CA 93943 USA.
RP Warren, TC (reprint author), Naval Postgrad Sch, Dept Def Anal, Monterey, CA 93943 USA.
EM CamberW@gmail.com
NR 128
TC 3
Z9 3
U1 2
U2 89
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0020-8183
EI 1531-5088
J9 INT ORGAN
JI Int. Organ.
PD WIN
PY 2014
VL 68
IS 1
BP 111
EP 141
DI 10.1017/S0020818313000350
PG 31
WC International Relations; Political Science
SC International Relations; Government & Law
GA AD0QP
UT WOS:000332939500004
ER
PT J
AU Bogle, L
AF Bogle, Lori
TI One Firm Anchor: The Church and the Merchant Seafarer, an Introductory
History
SO CATHOLIC HISTORICAL REVIEW
LA English
DT Book Review
C1 [Bogle, Lori] US Naval Acad, Annapolis, MD 21402 USA.
RP Bogle, L (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 1
TC 0
Z9 0
U1 0
U2 1
PU CATHOLIC UNIV AMER PRESS
PI WASHINGTON
PA 620 MICHIGAN AVENUE NE ADMIN BLDG ROOM 303, WASHINGTON, DC 20064 USA
SN 0008-8080
EI 1534-0708
J9 CATHOL HIST REV
JI Cathol. Hist. Rev.
PD WIN
PY 2014
VL 100
IS 1
BP 101
EP 102
PG 2
WC History
SC History
GA AB9RM
UT WOS:000332133400008
ER
PT J
AU Insler, M
AF Insler, Michael
TI The Health Consequences of Retirement
SO JOURNAL OF HUMAN RESOURCES
LA English
DT Article
ID SOCIAL-SECURITY; INSURANCE; DECISION; BEHAVIOR; OUTCOMES
AB This paper examines the impact of retirement on individuals' health. Declines in health commonly compel workers to retire, so the challenge is to disentangle the simultaneous causal effects. The estimation strategy employs an instrumental variables specification. The instrument is based on workers' self-reported probabilities of working past ages 62 and 65, taken from the first period in which they are observed. Results indicate that the retirement effect on health is beneficial and significant. Investigation into behavioral data, such as smoking and exercise, suggests that retirement may affect health through such channels. With additional leisure time, many retirees practice healthier habits.
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Insler, M (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
EM insler@usna.edu
NR 30
TC 5
Z9 5
U1 2
U2 62
PU UNIV WISCONSIN PRESS
PI MADISON
PA JOURNAL DIVISION, 1930 MONROE ST, 3RD FL, MADISON, WI 53711 USA
SN 0022-166X
EI 1548-8004
J9 J HUM RESOUR
JI J. Hum. Resour.
PD WIN
PY 2014
VL 49
IS 1
BP 195
EP 233
PG 39
WC Economics; Industrial Relations & Labor
SC Business & Economics
GA AB0QZ
UT WOS:000331498500007
ER
PT J
AU Allenby, B
Hagerott, M
AF Allenby, Brad
Hagerott, Mark
TI Universal Conscription as Technology Policy
SO ISSUES IN SCIENCE AND TECHNOLOGY
LA English
DT Article
C1 [Allenby, Brad] Arizona State Univ, Sch Sustainable Engn & Built Environm, Ira A Fulton Sch Engn, Tempe, AZ 85287 USA.
[Hagerott, Mark] US Naval Acad, Annapolis, MD 21402 USA.
RP Allenby, B (reprint author), Arizona State Univ, Sch Sustainable Engn & Built Environm, Ira A Fulton Sch Engn, Tempe, AZ 85287 USA.
EM braden.allenby@asu.edu; hagerott@usna.edu
NR 11
TC 1
Z9 1
U1 1
U2 7
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0748-5492
EI 1938-1557
J9 ISSUES SCI TECHNOL
JI Issues Sci. Technol.
PD WIN
PY 2014
VL 30
IS 2
BP 41
EP 46
PG 6
WC Engineering, Multidisciplinary; Engineering, Industrial;
Multidisciplinary Sciences; Social Issues
SC Engineering; Science & Technology - Other Topics; Social Issues
GA 292DV
UT WOS:000329883300013
ER
PT J
AU Woo, DJ
Hooper, JP
Osswald, S
Bottolfson, BA
Brewer, LN
AF Woo, Dong Jin
Hooper, Joseph P.
Osswald, Sebastian
Bottolfson, Brent A.
Brewer, Luke N.
TI Low temperature synthesis of carbon nanotube-reinforced aluminum metal
composite powders using cryogenic milling
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID AL MATRIX COMPOSITES; RAMAN-SPECTROSCOPY; MICROSTRUCTURAL
CHARACTERIZATION; NANOSTRUCTURED MATERIALS; MECHANICAL-PROPERTIES;
BEHAVIOR; NANOCOMPOSITES; NANODIAMOND; DISPERSION; EVOLUTION
AB Carbon nanotube (CNT)-reinforced aluminum composite powders were synthesized by cryogenic milling. The effects of different milling parameters and CNT contents on the structural characteristics and mechanical properties of the resulting composite powders were studied. Detailed information on powder morphology and the dispersion and structural integrity of the CNTs is crucial for many powder consolidation methods, particularly cold spray, which is increasingly utilized to fabricate metal-based nanocomposites. While all of the produced composite powders exhibited particle sizes suitable for spray applications, it was found that with increasing CNT content, the average particle size decreased and the size distribution became narrower. The dispersion of CNTs improved with milling time and helped to maintain a small Al grain size during cryogenic milling. Although extensive milling allowed for substantial grain size reduction, the process caused notable CNT degradation, leading to a deterioration of the mechanical properties of the resulting composite.
C1 [Woo, Dong Jin; Hooper, Joseph P.; Osswald, Sebastian] US Navy, Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
[Bottolfson, Brent A.; Brewer, Luke N.] US Navy, Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
RP Osswald, S (reprint author), Purdue Univ, Sch Mat Engn, 701 West Stadium Ave, W Lafayette, IN 47907 USA.
EM sosswald@purdue.edu
FU Office of Naval Research [30]
FX The authors would like to thank Dr. Sarath Menon (NPS) for his
assistance with SEM analysis. This work was supported by the Office of
Naval Research (Code 30).
NR 70
TC 4
Z9 4
U1 2
U2 26
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
EI 2044-5326
J9 J MATER RES
JI J. Mater. Res.
PD NOV 28
PY 2014
VL 29
IS 22
BP 2644
EP 2656
DI 10.1557/jmr.2014.300
PG 13
WC Materials Science, Multidisciplinary
SC Materials Science
GA AW7FG
UT WOS:000346429500005
ER
PT J
AU Bulterys, M
Berry, RJ
Watts, DH
AF Bulterys, Marc
Berry, Robert J.
Watts, D. Heather
TI Preconception antiretroviral therapy and birth defects: what is needed?
SO AIDS
LA English
DT Editorial Material
DE antiretroviral therapy; birth defects; drug safety; HIV infection;
mother-to-child transmission; pregnancy; surveillance
ID TO-CHILD TRANSMISSION; NEURAL-TUBE DEFECTS; INFECTED WOMEN;
HIV-INFECTION; FOLIC-ACID; SCALE-UP; MOTHER; PREVENTION; SAFETY;
PREGNANCY
C1 [Bulterys, Marc] NHRC, Dept Def HIV AIDS Prevent Program, San Diego, CA 92106 USA.
[Bulterys, Marc] Ctr Global Hlth, Div Global HIV AIDS, Atlanta, GA USA.
[Berry, Robert J.] Ctr Dis Control & Prevent, Natl Ctr Birth Defects & Dev Disabil, Div Birth Defects & Dev Disabil, Atlanta, GA USA.
[Watts, D. Heather] US Dept State, Off Global AIDS, Washington, DC 20520 USA.
RP Bulterys, M (reprint author), NHRC, Dept Def HIV AIDS Prevent Program DHAPP, 140 Sylvester Rd, San Diego, CA 92106 USA.
EM Marc.Bulterys@med.navy.mil
OI Berry, Robert/0000-0002-7162-5046
NR 31
TC 0
Z9 0
U1 0
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0269-9370
EI 1473-5571
J9 AIDS
JI Aids
PD NOV 28
PY 2014
VL 28
IS 18
BP 2777
EP 2780
DI 10.1097/QAD.0000000000000500
PG 4
WC Immunology; Infectious Diseases; Virology
SC Immunology; Infectious Diseases; Virology
GA AT9XO
UT WOS:000345277300016
PM 25493603
ER
PT J
AU Hervig, ME
Stevens, MH
AF Hervig, Mark E.
Stevens, Michael H.
TI Interpreting the 35 year SBUV PMC record with SOFIE observations
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID POLAR MESOSPHERIC CLOUDS; NOCTILUCENT CLOUDS; NLC OBSERVATIONS;
WATER-VAPOR; SOLAR-CYCLE; ALOMAR; SUMMER; LIDAR
AB Observations of polar mesospheric clouds (PMC) from the solar backscatter ultraviolet (SBUV) instruments are compared to the Solar Occultation For Ice Experiment (SOFIE). SBUV measurements are used to determine the PMC vertical column ice mass abundance (or ice water content, IWC) for comparison with SOFIE. Improved SBUV simulations are employed that accounted for nonspherical particles, and the multiwavelength measurements are used to retrieve particle size as the median radius (r(m)) of a Gaussian distribution. SBUV IWC retrievals incorporated r(m) as temporally smoothed values, to reduce propagation of r(m) errors but capture the effects of variable r(m) in IWC. For seasonal averages the SBUV-SOFIE r(m) differences are 22 +/- 6% in the Northern Hemisphere (NH) and 22 +/- 12% in the Southern Hemisphere (SH), and IWC differences were 3 +/- 6% in the NH and 7 +/- 12% in the SH. The SBUV record was used to derive IWC and particle size for 1979-2013 for 64-74 degrees N. The results indicate a secular increase in r(m) of 0.23 +/- 0.16 nm decade(-1) and a linear IWC trend of 2.6 +/- 1.2% decade(-1). Multiple regression of IWC to solar and trend terms reveals that 1.6% decade(-1) of the IWC trend can be attributed to a decline in solar Lyman alpha since 1979. The residual IWC trend from multiple regression (1.0% decade(-1)), presumably due to other external forcing such as changing atmospheric composition, is a factor of six less than PMC trends previously reported from a shorter time series of SBUV data.
C1 [Hervig, Mark E.] GATS Inc, Driggs, ID 83422 USA.
[Stevens, Michael H.] Naval Res Lab, Div Space Sci, Washington, DC USA.
RP Hervig, ME (reprint author), GATS Inc, Driggs, ID 83422 USA.
EM m.e.hervig@gats-inc.com
FU NASA/AIM mission - NASA's Small Explorers Program [NAS5-03132]
FX This work was supported by the NASA/AIM mission which is funded by
NASA's Small Explorers Program under contract NAS5-03132. We thank M.T.
DeLand for rigorous analysis of the SBUV PMC data and for making the
results available (sbuv2.gsfc.nasa.gov/pmc/scans_v3/). The SOFIE V1.2
summary files used in this work are available online at
sofie.gats-inc.com.
NR 41
TC 11
Z9 11
U1 0
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
EI 2169-8996
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD NOV 27
PY 2014
VL 119
IS 22
BP 12689
EP 12705
DI 10.1002/2014JD021923
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AW5YA
UT WOS:000346345600017
ER
PT J
AU Timm, MJ
Matta, CF
Massa, L
Huang, LL
AF Timm, Matthew J.
Matta, Cherif F.
Massa, Lou
Huang, Lulu
TI The Localization-Delocalization Matrix and the Electron-Density-Weighted
Connectivity Matrix of a Finite Graphene Nanoribbon Reconstructed from
Kernel Fragments
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID INCREMENTAL CORRELATION TREATMENT; POLYCYCLIC AROMATIC-HYDROCARBONS;
QUANTUM-MECHANICAL CALCULATION; ENERGY DECOMPOSITION SCHEME; RING
CRITICAL-POINTS; LARGE MOLECULES; HARTREE-FOCK; NONNUCLEAR ATTRACTORS;
CONQUER APPROACH; CHARGE-DENSITY
AB Bader's quantum theory of atoms in molecules (QTAIM) and chemical graph theory, merged in the localization-delocalization matrices (LDMs) and the electron-density-weighted connectivity matrices (EDWCM), are shown to benefit in computational speed from the kernel energy method (KEM). The LDM and EDWCM quantum chemical graph matrices of a 66-atom C46H20 hydrogen-terminated armchair graphene nanoribbon, in 14 (2x7) rings of C2v symmetry, are accurately reconstructed from kernel fragments. (This includes the full sets of electron densities at 84 bond critical points and 19 ring critical points, and the full sets of 66 localization and 4290 delocalization indices (LIs and DIs).) The average absolute deviations between KEM and directly calculated atomic electron populations, obtained from the sum of the LIs and half of the DIs of an atom, are 0.0012 +/- 0.0018 e(-) (similar to 0.02 +/- 0.03%) for carbon atoms and 0.0007 +/- 0.0003 e(-) (similar to 0.01 +/- 0.01%) for hydrogen atoms. The integration errors in the total electron population (296 electrons) are +0.0003 e(-) for the direct calculation (+0.0001%) and +0.0022 e(-) for KEM (+0.0007%). The accuracy of the KEM matrix elements is, thus, probably of the order of magnitude of the combined precision of the electronic structure calculation and the atomic integrations. KEM appears capable of delivering not only the total energies with chemical accuracy (which is well documented) but also local and nonlocal properties accurately, including the DIs between the fragments (crossing fragmentation lines). Matrices of the intact ribbon, the kernels, the KEM-reconstructed ribbon, and errors are available as Supporting Information .
C1 [Timm, Matthew J.; Matta, Cherif F.] Mt St Vincent Univ, Dept Chem & Phys, Halifax, NS B3M 2J6, Canada.
[Matta, Cherif F.] Dalhousie Univ, Dept Chem, Halifax, NS B3H 4J3, Canada.
[Matta, Cherif F.] St Marys Univ, Dept Chem, Halifax, NS B3H 3C3, Canada.
[Massa, Lou] CUNY, Hunter Coll, New York, NY 10065 USA.
[Massa, Lou] CUNY, Grad Sch, New York, NY 10065 USA.
[Huang, Lulu] Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
RP Matta, CF (reprint author), Mt St Vincent Univ, Dept Chem & Phys, Halifax, NS B3M 2J6, Canada.
EM cherif.matta@msvu.ca
FU Natural Sciences and Engineering Research Council of Canada; Canada
Foundation for Innovation; Mount Saint Vincent University; U.S. Naval
Research Laboratory [47203-00 01]; PSC CUNY [63842-00 41]; U.S. Office
of Naval Research through Naval Research Laboratory's Basic Research
Program
FX The authors thank Todd A. Keith, Ismat Sumar, and the two anonymous
reviewers for their helpful suggestions. Funding for this project was
provided by the Natural Sciences and Engineering Research Council of
Canada, the Canada Foundation for Innovation, Mount Saint Vincent
University (C.F.M.), the U.S. Naval Research Laboratory (project no.
47203-00 01), a PSC CUNY Award (project no. 63842-00 41) (L.M.), and the
U.S. Office of Naval Research through the Naval Research Laboratory's
Basic Research Program (L.H.)
NR 105
TC 7
Z9 7
U1 1
U2 6
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD NOV 27
PY 2014
VL 118
IS 47
BP 11304
EP 11316
DI 10.1021/jp508490p
PG 13
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AU6OG
UT WOS:000345721500019
PM 25343715
ER
PT J
AU Parker, JF
Nelson, ES
Wattendorf, MD
Chervin, CN
Long, JW
Rolison, DR
AF Parker, Joseph F.
Nelson, Eric S.
Wattendorf, Matthew D.
Chervin, Christopher N.
Long, Jeffrey W.
Rolison, Debra R.
TI Retaining the 3D Framework of Zinc Sponge Anodes upon Deep Discharge in
Zn-Air Cells
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE zinc; zinc-air; batteries; morphology; energy; three-dimensional
architecture
ID FUEL-CELL; BATTERIES; ELECTRODE; CATHODE
AB We fabricate three-dimensional zinc electrodes from emulsion-cast sponges of Zn powder that are thermally treated to produce rugged monoliths. This highly conductive, 3D-wired aperiodic scaffold achieves 740 mA h g(Zn)(-1) when discharged in primary Zn-air cells (>90% of theoretical Zn capacity). We use scanning electron microscopy and X-ray diffraction to monitor the microstructural evolution of a series of Zn sponges when oxidized in Zn-air cells to specific depths-of-discharge (20, 40, 60, 80% DOD) at a technologically relevant rate (C/40; 4-6 mA cm(-2)). The Zn sponges maintain their 3D-monolithic form factor at all DOD. The cell resistance remains low under all test conditions, indicating that an inner core of metallic Zn persists that 3D-electrically wires the electrode, even to deep DOD.
C1 [Parker, Joseph F.; Nelson, Eric S.; Wattendorf, Matthew D.; Chervin, Christopher N.; Long, Jeffrey W.; Rolison, Debra R.] US Naval Res Lab, Surface Chem Branch, Washington, DC 20375 USA.
RP Parker, JF (reprint author), US Naval Res Lab, Surface Chem Branch, Code 6170, Washington, DC 20375 USA.
EM joseph.parker@nrl.navy.mil; rolison@nrl.navy.mil
FU U.S. Office of Naval Research; U.S. Naval Research Laboratory
FX This work was supported by the U.S. Office of Naval Research. J.F.P.
acknowledges a Jerome and Isabella Karle Distinguished Scholar
Fellowship from the U.S. Naval Research Laboratory.
NR 27
TC 6
Z9 6
U1 9
U2 74
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 NOV 26
PY 2014
VL 6
IS 22
BP 19471
EP 19476
DI 10.1021/am505266c
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA AU6OF
UT WOS:000345721400002
PM 25350789
ER
PT J
AU Guenthner, AJ
Wright, ME
Chafin, AP
Reams, JT
Lamison, KR
Ford, MD
Kirby, SPJ
Zavala, JJ
Mabry, JM
AF Guenthner, Andrew J.
Wright, Michael E.
Chafin, Andrew P.
Reams, Josiah T.
Lamison, Kevin R.
Ford, Michael D.
Kirby, Shawn P. J.
Zavala, Jacob J.
Mabry, Joseph M.
TI Mechanisms of Decreased Moisture Uptake in Ortho-Methylated Di(cyanate
ester) Networks
SO MACROMOLECULES
LA English
DT Article
ID CYANATE ESTER; PHYSICAL-PROPERTIES; MORPHOLOGICAL PROPERTIES;
POLYCYANURATE NETWORKS; NANOCOMPOSITES; COMPOSITE; RESINS; HYBRID;
DEGRADATION; TEMPERATURE
AB Decreases of up to 50% in the moisture uptake of polycyanurate networks based on 2,2-bis(4-cyanatophenyl)propane (BADCy) and 1,1-bis(4-cyanatophenyl)ethane (LECy) were observed when analogous networks containing a single methyl group ortho- to each arylcyanurate linkage were prepared by reduction and acid-catalyzed coupling of salicylic acid followed by treatment with cyanogen bromide and subsequent cyclotrimerization. The differences in water uptake were observed despite similar decreases in packing fraction as conversion proceeded in all networks studied. Conversely, the presence or absence of methyl groups at arylene bridges, remote from the cyanurate oxygen, had no influence on water uptake. Vitrification during cure had little effect on either free volume development or moisture uptake. These results confirm that steric hindrance from ortho-methyl groups inhibits absorption of water presumably by decreasing the thermodynamic favorability of sterically permitted interaction with the cyanurate oxygen. A further examination of the effect of two different catalysts, 2 parts per hundred of a 30:1 by weight mixture of nonylphenol and copper(II) acetylacetonate and 500 ppm of dibutyltin dilaurate (DBTDL), compared to analogous uncatalyzed networks, showed that hydrolytic stability was dramatically affected by catalyst choice, while thermochemical stability was also impacted. These results provide important insights into the mechanisms that determine structureproperty relationships in polycyanurate networks.
C1 [Guenthner, Andrew J.; Kirby, Shawn P. J.; Mabry, Joseph M.] Air Force Res Lab, Aerosp Syst Directorate, Edwards AFB, CA 93524 USA.
[Reams, Josiah T.; Lamison, Kevin R.; Ford, Michael D.; Zavala, Jacob J.] Air Force Res Lab, ERC Inc, Edwards AFB, CA 93524 USA.
[Wright, Michael E.; Chafin, Andrew P.] Naval Air Warfare Ctr, Weap Div, China Lake, CA 93555 USA.
RP Guenthner, AJ (reprint author), Air Force Res Lab, Aerosp Syst Directorate, Edwards AFB, CA 93524 USA.
EM andrew.guenthner@us.af.mil
FU Office of Naval Research; Air Force Research Laboratory Rocket
Propulsion Division; Air Force Office of Scientific Research; Cal Poly
University Center for Excellence in STEM Education (CESAME) STEM Teacher
and Researcher (STAR) program
FX The support of the Office of Naval Research, Air Force Research
Laboratory Rocket Propulsion Division, and the Air Force Office of
Scientific Research is gratefully acknowledged. S.P.J.K. thanks the Cal
Poly University Center for Excellence in STEM Education (CESAME) STEM
Teacher and Researcher (STAR) program for sponsorship of a research
internship at the Air Force Research Laboratory, under which a portion
of this work was completed.
NR 43
TC 9
Z9 9
U1 2
U2 13
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
EI 1520-5835
J9 MACROMOLECULES
JI Macromolecules
PD NOV 25
PY 2014
VL 47
IS 22
BP 7691
EP 7700
DI 10.1021/ma501862a
PG 10
WC Polymer Science
SC Polymer Science
GA AU4AZ
UT WOS:000345552700002
ER
PT J
AU Rosa, PFS
Zeng, B
Adriano, C
Garitezi, TM
Grant, T
Fisk, Z
Balicas, L
Johannes, MD
Urbano, RR
Pagliuso, PG
AF Rosa, P. F. S.
Zeng, B.
Adriano, C.
Garitezi, T. M.
Grant, T.
Fisk, Z.
Balicas, L.
Johannes, M. D.
Urbano, R. R.
Pagliuso, P. G.
TI Quantum oscillations in EuFe2As2 single crystals
SO PHYSICAL REVIEW B
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTIVITY; IRON; BAFE2AS2
AB Quantum oscillation measurements provide relevant information about the Fermi surface (FS) properties of strongly correlated metals. Here, we report on the Shubnikov-de Haas effect via high-field resistivity measurements of EuFe2As2 (Eu122) and BaFe2As2 (Ba122) single crystals. Although both pnictide compounds are isovalent with similar effective masses and density of states, at the Fermi level, our results reveal subtle changes in their fermiology. Remarkably, although the spin-density-wave (SDW) ordering temperature is higher in the Eu-rich end, Eu122 displays a much more isotropic and three-dimensional-like FS when compared with Ba122, in agreement with band structure calculations. Our experimental results suggest an anisotropic contribution of the Fe 3d orbitals to the FS in Ba122. We speculate that this orbital differentiation may be responsible for the suppression of the SDW phase in the FeAs-based compounds.
C1 [Rosa, P. F. S.; Adriano, C.; Garitezi, T. M.; Urbano, R. R.; Pagliuso, P. G.] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP, Brazil.
[Rosa, P. F. S.; Grant, T.; Fisk, Z.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Zeng, B.; Balicas, L.] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
[Johannes, M. D.] Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
RP Rosa, PFS (reprint author), Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP, Brazil.
RI Grant, Ted/O-7453-2014; Inst. of Physics, Gleb Wataghin/A-9780-2017
OI Grant, Ted/0000-0002-2636-8212;
FU FAPESP-SP; AFOSR MURI; CNPq; FINEP-Brazil; DOE-BES [DE-SC0002613]; NSF
[NSF-DMR-0084173]; U.S. Office of Naval Research through the Naval
Research Laboratory's Basic Research Program; State of Florida
FX This work was supported by FAPESP-SP, AFOSR MURI, CNPq, and
FINEP-Brazil. L.B. is supported by DOE-BES through Award No.
DE-SC0002613. Work at NHMFL was performed under the auspices of the NSF
through Grant No. NSF-DMR-0084173 and the State of Florida. Funding for
M.D.J. was provided by the U.S. Office of Naval Research through the
Naval Research Laboratory's Basic Research Program.
NR 37
TC 1
Z9 1
U1 4
U2 39
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 24
PY 2014
VL 90
IS 19
AR 195146
DI 10.1103/PhysRevB.90.195146
PG 6
WC Physics, Condensed Matter
SC Physics
GA AU3UH
UT WOS:000345538500003
ER
PT J
AU Lumb, MP
Steiner, MA
Geisz, JF
Walters, RJ
AF Lumb, Matthew P.
Steiner, Myles A.
Geisz, John F.
Walters, Robert J.
TI Incorporating photon recycling into the analytical drift-diffusion model
of high efficiency solar cells
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID SHOCKLEY-QUEISSER LIMIT; GAAS; RECOMBINATION; PERFORMANCE; LUMINESCENCE;
COHERENT
AB The analytical drift-diffusion formalism is able to accurately simulate a wide range of solar cell architectures and was recently extended to include those with back surface reflectors. However, as solar cells approach the limits of material quality, photon recycling effects become increasingly important in predicting the behavior of these cells. In particular, the minority carrier diffusion length is significantly affected by the photon recycling, with consequences for the solar cell performance. In this paper, we outline an approach to account for photon recycling in the analytical Hovel model and compare analytical model predictions to GaAs-based experimental devices operating close to the fundamental efficiency limit. (C) 2014 AIP Publishing LLC.
C1 [Lumb, Matthew P.] George Washington Univ, Washington, DC 20037 USA.
[Lumb, Matthew P.; Walters, Robert J.] Naval Res Lab, Washington, DC 20375 USA.
[Steiner, Myles A.; Geisz, John F.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Lumb, MP (reprint author), George Washington Univ, 2121 1 St NW, Washington, DC 20037 USA.
FU U.S. Department of Energy [DE-AC36-08GO28308]; Foundational Program to
Advance Cell Efficiency; Office of Naval Research
FX The authors would like to thank I. Vurgaftman for advice and helpful
suggestions during the preparation of this manuscript, J. G. J. Adams,
V. C. Elarde, and the R&D team at MicroLink Devices, and D. Friedman, I.
Garcia, and S. Kurtz of NREL for helpful discussions relating to this
work. Research at NREL was supported by the U.S. Department of Energy
under Contract No. DE-AC36-08GO28308 and funded in part by the
Foundational Program to Advance Cell Efficiency. This work was supported
by the Office of Naval Research.
NR 37
TC 16
Z9 16
U1 4
U2 15
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD NOV 21
PY 2014
VL 116
IS 19
AR 194504
DI 10.1063/1.4902320
PG 10
WC Physics, Applied
SC Physics
GA AU3LC
UT WOS:000345513700054
ER
PT J
AU Yadav, RB
Ma, WC
Marsh, JC
Ijaz, QA
Janssens, RVF
Carpenter, MP
Hoffman, CR
Lauritsen, T
Zhu, S
Kondev, FG
Urdal, GG
Hagemann, GB
Hartley, DJ
Riedinger, LL
Mukhopadhyay, S
AF Yadav, R. B.
Ma, W. C.
Marsh, J. C.
Ijaz, Q. A.
Janssens, R. V. F.
Carpenter, M. P.
Hoffman, C. R.
Lauritsen, T.
Zhu, S.
Kondev, F. G.
Urdal, G. G.
Hagemann, G. B.
Hartley, D. J.
Riedinger, L. L.
Mukhopadhyay, S.
TI Multiple excitation modes in Hf-163
SO PHYSICAL REVIEW C
LA English
DT Article
ID HIGH-SPIN SPECTROSCOPY; RARE-EARTH NUCLEI; LIFETIME MEASUREMENTS;
TRIAXIAL SUPERDEFORMATION; WOBBLING EXCITATIONS; WELL; CROSSINGS;
LU-161; ER-158; STATES
AB Excited states of Hf-163 were populated using the Zr-94(Ge-74,5n) reaction and the decay gamma rays were measured with the Gammasphere spectrometer. Two previously known bands were extended to higher spins, and nine new bands were identified. In addition to bands associated with three- and five-quasiparticle configurations, two gamma-vibrational bands coupled to the i(13/2) excitation were also observed. The lowest level of a newly identified, negative-parity band is proposed to be the ground state of the nucleus. A systematic delay of the high-spin proton crossing frequency with increasing quadrupole deformation from Hf-162 to Hf-172 was established. Extensive band searches failed to reveal a triaxial, strongly deformed structure in Hf-163 similar to the one observed in several nuclei around A similar to 165.
C1 [Yadav, R. B.; Ma, W. C.; Marsh, J. C.; Ijaz, Q. A.] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA.
[Janssens, R. V. F.; Carpenter, M. P.; Hoffman, C. R.; Lauritsen, T.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Kondev, F. G.; Urdal, G. G.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
[Hagemann, G. B.] Niels Bohr Inst, DK-2100 Copenhagen, Denmark.
[Hartley, D. J.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA.
[Riedinger, L. L.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Mukhopadhyay, S.] Bhabha Atom Res Ctr, Div Nucl Phys, Bombay 400085, Maharashtra, India.
RP Yadav, RB (reprint author), Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA.
RI Carpenter, Michael/E-4287-2015; Hoffman, Calem/H-4325-2016
OI Carpenter, Michael/0000-0002-3237-5734; Hoffman,
Calem/0000-0001-7141-9827
FU US Department of Energy, Office of Science, Office of Nuclear Physics
[DE-FG02-95ER40939 (MSU), DE-AC02-06CH11357 (ANL)]; National Science
Foundation [PHY-1203100 (USNA)]
FX The authors thank the ANL operations staff at Gammasphere and gratefully
acknowledge the efforts of J. P. Greene for the target preparation. This
material was based upon work supported by the US Department of Energy,
Office of Science, Office of Nuclear Physics, under Award No.
DE-FG02-95ER40939 (MSU) and under Contract No. DE-AC02-06CH11357 (ANL),
and by the National Science Foundation under Grant No. PHY-1203100
(USNA). This research used resources of ANL's ATLAS facility, which is a
DOE Office of Science User Facility.
NR 53
TC 0
Z9 0
U1 1
U2 3
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 NOV 19
PY 2014
VL 90
IS 5
AR 054325
DI 10.1103/PhysRevC.90.054325
PG 12
WC Physics, Nuclear
SC Physics
GA AU2RW
UT WOS:000345466300002
ER
PT J
AU Gor, GY
AF Gor, Gennady Y.
TI Adsorption Stress Changes the Elasticity of Liquid Argon Confined in a
Nanopore
SO LANGMUIR
LA English
DT Article
ID FUNCTIONAL THEORY MODEL; MICROPOROUS MATERIALS; INDUCED DEFORMATION;
POROMECHANICS; PRESSURE; COAL; SOLIDS; SILICA; FLUID
AB Knowledge of the elastic properties of a fluid is crucial for predicting its flow under high pressure, particularly in porous melt. However, when a fluid is confined to a nanopore, many of its thermodynamic properties change as compared to bulk. Here we study the effect,,o14.,. confinement on the bulk modulus of liquid argon adsorbed in mesopores using classical density functional theory. We show that, at pressures lower than the saturation pressure, high adsorption stress in the pore causesIth lowering of the fluid bulk modulus, a phenomenon which was recent] observed experimentally [Schappert, K.; Paster, R. Europhys. Lett. 2014, Os 5600]. Furthermore, we find that the pore size has a strong effect on the fluid bulk modulus, so that even at saturation, the elastic properties nanoconfined fluid differ from the bulk values. We show that this difference is also due to the adsorption stress. Our results provide',-a basis for 'a new : method for characterization of porous materials and have implications for such as coal or shale.
C1 [Gor, Gennady Y.] Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA.
RP Gor, GY (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM ggor@princeton.edu
NR 34
TC 9
Z9 9
U1 2
U2 27
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 18
PY 2014
VL 30
IS 45
BP 13564
EP 13569
DI 10.1021/la503877q
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA AT9RS
UT WOS:000345264500009
PM 25346060
ER
PT J
AU Alidoust, M
Halterman, K
AF Alidoust, Mohammad
Halterman, Klaus
TI Long-range triplet supercurrents induced by singlet supercurrents
parallel to magnetic interfaces
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID FERROMAGNET; SUPERCONDUCTOR
AB Employing a spin-parameterized Keldysh-Usadel technique for the diffusive regime, we demonstrate that even in the low proximity limit, considerable long-ranged triplet supercurrents can be effectively generated by spin-singlet supercurrents flowing parallel to the interfaces of uniform double ferromagnet interlayers with noncollinear exchange fields independent of actual junction geometry. The triplet supercurrents are found to be most pronounced when the thicknesses of the ferromagnet strips are unequal. To experimentally verify this generic phenomenon, we propose an accessible and controllable structure that can fully isolate the long-range triplet effects. (C) 2014 AIP Publishing LLC.
C1 [Alidoust, Mohammad] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland.
[Halterman, Klaus] Naval Air Warfare Ctr, Michelson Lab, Div Phys, China Lake, CA 93555 USA.
[Alidoust, Mohammad] Univ Isfahan, Dept Phys, Fac Sci, Esfahan 8174673441, Iran.
RP Alidoust, M (reprint author), Univ Basel, Dept Phys, Klingelbergstr 82, CH-4056 Basel, Switzerland.
EM phymalidoust@gmail.com; klaus.halterman@navy.mil
OI Halterman, Klaus/0000-0002-6355-3134; Alidoust,
Mohammad/0000-0002-1554-687X
FU ONR; DOD HPCMP
FX We would like to thank G. Sewell for valuable instructions in the
numerical parts of this work. We also appreciate N. O. Birge for useful
conversations and comments. K.H. is supported in part by ONR and by a
grant of supercomputer resources provided by the DOD HPCMP.
NR 27
TC 5
Z9 6
U1 1
U2 24
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 NOV 17
PY 2014
VL 105
IS 20
AR 202601
DI 10.1063/1.4898205
PG 4
WC Physics, Applied
SC Physics
GA AU3KZ
UT WOS:000345513300051
ER
PT J
AU Haegel, NM
Christian, T
Scandrett, C
Norman, AG
Mascarenhas, A
Misra, P
Liu, T
Sukiasyan, A
Pickett, E
Yuen, H
AF Haegel, N. M.
Christian, T.
Scandrett, C.
Norman, A. G.
Mascarenhas, A.
Misra, Pranob
Liu, Ting
Sukiasyan, Arsen
Pickett, Evan
Yuen, Homan
TI Doping dependence and anisotropy of minority electron mobility in
molecular beam epitaxy-grown p type GaInP
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID OPTICAL ANISOTROPY; MODULATION; ALLOYS
AB Direct imaging of minority electron transport via the spatially resolved recombination luminescence signature has been used to determine carrier diffusion lengths in GaInP as a function of doping. Minority electron mobility values are determined by performing time resolved photoluminescence measurements of carrier lifetime on the same samples. Values at 300K vary from similar to 2000 to 400 cm(2)/V s and decrease with increasing doping. Anisotropic diffusion lengths and strongly polarized photoluminescence are observed, resulting from lateral composition modulation along the [110] direction. We report anisotropic mobility values associated with carrier transport parallel and perpendicular to the modulation direction. (C) 2014 AIP Publishing LLC.
C1 [Haegel, N. M.; Christian, T.; Norman, A. G.; Mascarenhas, A.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Scandrett, C.] Naval Postgrad Sch, Monterey, CA 93943 USA.
[Misra, Pranob; Liu, Ting; Sukiasyan, Arsen; Pickett, Evan; Yuen, Homan] Solar Junct Inc, San Jose, CA 95131 USA.
RP Haegel, NM (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
RI Norman, Andrew/F-1859-2010
OI Norman, Andrew/0000-0001-6368-521X
FU Naval Postgraduate School in part by National Science Foundation
[DMR-0804527]; NPS Energy Academic Group; Navy Energy Coordination
Office; Department of Energy, Office of Science Graduate Fellowship
Program (DOE SCGF) [DE-AC05-06OR23100]; Department of Energy Office of
Science, Basic Energy Sciences [DEAC36-08GO28308]
FX This work was supported at the Naval Postgraduate School in part by
National Science Foundation Grant No. DMR-0804527 and in part by the NPS
Energy Academic Group with funding from the Navy Energy Coordination
Office. T.C. acknowledges support from the Department of Energy, Office
of Science Graduate Fellowship Program (DOE SCGF), made possible in part
by the American Recovery and Reinvestment Act of 2009, administered by
ORISE-ORAU under Control No. DE-AC05-06OR23100. TRPL work at NREL was
supported by the Department of Energy Office of Science, Basic Energy
Sciences under DEAC36-08GO28308.
NR 17
TC 2
Z9 2
U1 0
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 17
PY 2014
VL 105
IS 20
AR 202116
DI 10.1063/1.4902316
PG 5
WC Physics, Applied
SC Physics
GA AU3KZ
UT WOS:000345513300044
ER
PT J
AU Yin, P
Parrish, DA
Shreeve, JM
AF Yin, Ping
Parrish, Damon A.
Shreeve, Jean'ne M.
TI Bis(nitroamino-1,2,4-triazolates): N-Bridging Strategy Toward
Insensitive Energetic Materials
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE bis(1,2,4-triazolates); detonation performance; energetic materials;
polynitro compounds
ID IONIC LIQUIDS; DERIVATIVES; SALTS; EXPLOSIVES; NITRATION; DESIGN; MONO
AB Modern energetic motifs for military and civilian applications are most often evaluated using various criteria, for example, energetic properties, production costs, and safety issues. Given this background, the design of energetic materials requires a deep understanding of both detonation performance and molecular stability. Here a new family of energetic bis(nitroamino-1,2,4-triazolates), which exhibit good thermal stabilities, excellent detonation properties, and low sensitivities, has been designed. Furthermore, two hydroxylammonium bis(azolates) with pyrazole and tetrazole backbones were synthesized, and they exhibit energetic properties analogous to the triazoles. This work highlights the application potential of N-bridged bis(azolates) as promising energetic materials.
C1 [Yin, Ping; Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA.
[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
RI Yin, Ping/A-3699-2014
OI Yin, Ping/0000-0002-2870-8225
NR 47
TC 31
Z9 32
U1 7
U2 62
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1433-7851
EI 1521-3773
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PD NOV 17
PY 2014
VL 53
IS 47
BP 12889
EP 12892
DI 10.1002/anie.201408127
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA AT2UY
UT WOS:000344793400039
PM 25293640
ER
PT J
AU Thindza, M
Flynn, RA
Shirk, JS
Beadie, G
AF Thindza, Michael
Flynn, Richard A.
Shirk, James S.
Beadie, G.
TI Thin sample refractive index by transmission spectroscopy
SO OPTICS EXPRESS
LA English
DT Article
ID WHITE-LIGHT INTERFEROMETRY; WAVELENGTH CALIBRATION; LENSES;
SPECTROMETER; THICKNESS
AB Transmission spectroscopy and a small number of refractometer index measurements are combined to provide refractive index measurements of transparent samples similar to 50 um thick at hundreds of wavelengths with absolute accuracies <1x10(-4). Key to the technique is the use of independent index measurements to circumvent the need for an independent thickness measurement of the sample. The method was demonstrated on glass samples where fits to Cauchy curves had RMS accuracies <3x10(-5) from 415 to 1610 nm. Issues that must be addressed to reach this level of accuracy are discussed. (C) 2014 Optical Society of America
C1 [Thindza, Michael; Flynn, Richard A.; Beadie, G.] Naval Res Lab, Opt Sci Div, Washington, DC 20375 USA.
[Shirk, James S.] Sotera Def Solut Inc, Columbia, MD 21046 USA.
RP Beadie, G (reprint author), Naval Res Lab, Opt Sci Div, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM polymer_GRIN_lenses@nrl.navy.mil
FU DARPA
FX The authors wish to acknowledge DARPA for financial support for this
work. The views expressed are those of the authors and do not reflect
the official policy or position of the Department of Defense or the U.S.
Government. Distribution Statement A: This document has been approved
for public release, distribution is unlimited.
NR 29
TC 0
Z9 0
U1 1
U2 5
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 17
PY 2014
VL 22
IS 23
BP 28537
EP 28552
DI 10.1364/OE.22.028537
PG 16
WC Optics
SC Optics
GA AT9TI
UT WOS:000345268500077
ER
PT J
AU Rabinovich, WS
Mahon, R
Ferraro, M
Goetz, PG
Murphy, JL
AF Rabinovich, W. S.
Mahon, R.
Ferraro, M.
Goetz, P. G.
Murphy, J. L.
TI Reduction of scintillation in optical modulating retro-reflector links
SO OPTICS EXPRESS
LA English
DT Article
ID TO-STRONG TURBULENCE; ATMOSPHERIC-TURBULENCE; BEAM; STATISTICS; SYSTEM
AB Optical modulating retro-reflectors enable free-space optical links that have greatly reduced pointing requirements and do not require a laser at one end of the link. However, these types of links can exhibit very high optical scintillation due to the double passage of the beam through the atmosphere. This high scintillation causes fades and surges that can lead to packet errors in the link. It is shown that scintillation can be greatly reduced through a combination of techniques including retro-reflector diversity, aperture averaging and bistatic optical interrogation. Improvements of 20 dB in link performance are demonstrated. (C) 2014 Optical Society of America
C1 [Rabinovich, W. S.; Mahon, R.; Ferraro, M.; Goetz, P. G.; Murphy, J. L.] US Naval Res Lab, Code 5654, Washington, DC 20375 USA.
RP Rabinovich, WS (reprint author), US Naval Res Lab, Code 5654, Washington, DC 20375 USA.
EM Rabinovich@nrl.navy.mil
FU Office of Naval Research
FX We acknowledge the support of the Office of Naval Research.
NR 23
TC 3
Z9 3
U1 0
U2 5
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 17
PY 2014
VL 22
IS 23
BP 28553
EP 28565
DI 10.1364/OE.22.028553
PG 13
WC Optics
SC Optics
GA AT9TI
UT WOS:000345268500078
PM 25402097
ER
PT J
AU McWilliams, B
Dibelka, J
Yen, CF
AF McWilliams, B.
Dibelka, J.
Yen, C. -F.
TI Multi scale modeling and characterization of inelastic deformation
mechanisms in continuous fiber and 2D woven fabric reinforced metal
matrix composites
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Metal matrix composites (MMCs); Mechanical properties; Finite element
method; Micromechanics; Cohesive zone modeling
ID TENSILE-STRENGTH; FLOW-STRESS; ALUMINUM; DAMAGE; BEHAVIOR; EVOLUTION;
FRACTURE; YIELD
AB Continuous unidirectional ceramic fiber and woven fabric reinforced metal matrix composites (MMCs) have potential to obtain very high specific strengths and stiffnesses, but use in structural applications has thus far been limited by their inherently low ductility, particularly in tensile loading conditions. In this work, a multi-scale micromechanics based finite element framework is used to predict, and understand the effect of microstructure on the tensile deformation behavior, including progressive damage and failure, of ceramic fiber and fabric reinforced MMCs. A hierarchal approach is implemented in which a micro-scale model is used to determine the transversely isotropic elasto-plastic mechanical behavior of unidirectional fiber reinforced MMC based on the properties of an aluminum alloy matrix, individual ceramic fibers, and the fiber-matrix interface. The validated transversely isotropic constitutive behavior is then input into a unit cell model for a woven fabric MMC consisting of unidirectional MMC tows in an aluminum matrix. Parallel experimental tensile testing and characterization of fracture mechanisms are used to validate our model for unidirectional and 2D weave fabric MMC. Cohesive zones are used to model the interfacial properties at both scales and we are able to quantify the contribution of various deformation and damage mechanisms such as ductile matrix failure, interfacial decohesion, transverse plasticity, and axial fiber fracture to the overall mechanical response of the MMC. It was found that interfacial debonding contributes significantly to the inelastic response of unidirectional and woven fabric MMC and that experimental data are relatively well reproduced by a model that assumes a weak interfacial debonding cohesive law (maximum allowable interface stresses on the order of 100 MPa and total work of decohesion = 75 J/m(2)). Published by Elsevier B.V.
C1 [McWilliams, B.; Yen, C. -F.] US Army, Res Lab, Weap & Mat Res Directorate, Aberdeen Proving Ground, MD 21005 USA.
[Dibelka, J.] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD USA.
RP McWilliams, B (reprint author), US Army, Res Lab, Weap & Mat Res Directorate, Aberdeen Proving Ground, MD 21005 USA.
EM brandon.a.mcwilliams.civ@mail.mil; jessica.a.dibelka.civ@mail.mil;
chianfong.yen.civ@mail.mil
NR 48
TC 3
Z9 3
U1 3
U2 24
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
EI 1873-4936
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 17
PY 2014
VL 618
BP 142
EP 152
DI 10.1016/j.msea.2014.08.063
PG 11
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA AS7MG
UT WOS:000344439500018
ER
PT J
AU Sundermeyer, MA
Skyllingstad, E
Ledwell, JR
Concannon, B
Terray, EA
Birch, D
Pierce, SD
Cervantes, B
AF Sundermeyer, Miles A.
Skyllingstad, Eric
Ledwell, James R.
Concannon, Brian
Terray, Eugene A.
Birch, Daniel
Pierce, Stephen D.
Cervantes, Brandy
TI Observations and numerical simulations of large-eddy circulation in the
ocean surface mixed layer
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID LANGMUIR CIRCULATION; BOUNDARY-LAYER; TURBULENCE; WIND; WAVES
AB Two near-surface dye releases were mapped on scales of minutes to hours temporally, meters to order 1 km horizontally, and 1-20 m vertically using a scanning, depth-resolving airborne lidar. In both cases, dye evolved into a series of rolls with their major axes approximately aligned with the wind and/or near-surface current. In both cases, roll spacing was also of order 5-10 times the mixed layer depth, considerably larger than the 1-2 aspect ratio expected for Langmuir cells. Numerical large-eddy simulations under similar forcing showed similar features, even without Stokes drift forcing. In one case, inertial shear driven by light winds induced large aspect ratio large-eddy circulation. In the second, a preexisting lateral mixed layer density gradient provided the dominant forcing. In both cases, the growth of the large-eddy structures and the strength of the resulting dispersion were highly dependent on the type of forcing.
C1 [Sundermeyer, Miles A.; Birch, Daniel] Univ Massachusetts Dartmouth, Sch Marine Sci & Technol, N Dartmouth, MA 02747 USA.
[Skyllingstad, Eric; Pierce, Stephen D.; Cervantes, Brandy] Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA.
[Ledwell, James R.; Terray, Eugene A.] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
[Concannon, Brian] Naval Air Syst Command, Patuxent River, MD USA.
RP Sundermeyer, MA (reprint author), Univ Massachusetts Dartmouth, Sch Marine Sci & Technol, N Dartmouth, MA 02747 USA.
EM msundermeyer@umassd.edu
FU Cecil H. and Ida M. Green Technology Innovation Fund through Woods Hole
Oceanographic Institution; Coastal Ocean Institute through Woods Hole
Oceanographic Institution [27001545]; Office of Naval Research
[N00014-01-1-0984]; ONR [N00014-09-1-0194, N00014-09-1-0175,
N00014-11-WX-21010, N00014-12-WX-21031, N00014-09-1-0460]; NSF
[OCE-0751734, OCE-0751653]; [N00014-09-1-0268]
FX Support for the 2004 field experiment was provided by the Cecil H. and
Ida M. Green Technology Innovation Fund and Coastal Ocean Institute
grant 27001545, both through Woods Hole Oceanographic Institution, and
by Office of Naval Research grant N00014-01-1-0984. Support for the 2011
field experiments was provided by ONR grants N00014-09-1-0194,
N00014-09-1-0175, N00014-11-WX-21010, N00014-12-WX-21031, and
N00014-09-1-0460 and NSF grants OCE-0751734 and OCE-0751653. Simulations
were supported under grant N00014-09-1-0268. Lidar data represented in
Figures 1 and 3 can be obtained by contacting M. Sundermeyer. Numerical
model results depicted in Figures 2 and 4 can be obtained by contacting
E. Skyllingstad. In memoriam Murray Levine.
NR 24
TC 2
Z9 2
U1 0
U2 14
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 NOV 16
PY 2014
VL 41
IS 21
BP 7584
EP 7590
DI 10.1002/2014GL061637
PG 7
WC Geosciences, Multidisciplinary
SC Geology
GA AU3MT
UT WOS:000345518300023
ER
PT J
AU Maalouf, M
MacKenzie, CA
Radakrishnan, S
Court, M
AF Maalouf, Maher
MacKenzie, Cameron. A.
Radakrishnan, Sridhar
Court, Mary
TI A new fuzzy logic approach to capacitated dynamic Dial-a-Ride problem
SO FUZZY SETS AND SYSTEMS
LA English
DT Article
DE Dial-a-Ride problem; Fuzzy logic; Transportation
ID TIME WINDOWS; LINGUISTIC-SYNTHESIS; HEURISTIC ALGORITHM; GENETIC
ALGORITHMS; TRANSPORTATION; SYSTEMS
AB Almost all Dial-a-Ride problems (DARP) described in the literature pertain to the design of optimal routes and schedules for n customers who specify pick-up and drop-off times. In this article we assume that the customer is mainly concerned with the drop-off time because it is the most important to the customer. Based on the drop-off time specified by the customer and the customer's location, a pick-up time is calculated and given to the customer by the dispatching office. We base our formulation on a dynamic fuzzy logic approach in which a new request is assigned to a vehicle. The fuzzy logic algorithm chooses the vehicle to transport the customer by seeking to satisfy two objectives. The first reflects the customer's preference and minimizes the time a customer spends in the vehicle, and the second reflects the company's preference and minimizes the distance a vehicle needs to travel to transport the customer. The proposed heuristic algorithm is relatively simple and computationally efficient in comparison with most deterministic algorithms for solving both small and large sized problems.
C1 [Maalouf, Maher] Khalifa Univ, Abu Dhabi, U Arab Emirates.
[MacKenzie, Cameron. A.] Naval Postgrad Sch, Def Resources Management Inst, Monterey, CA 93943 USA.
[Radakrishnan, Sridhar] Univ Oklahoma, Sch Comp Sci, Norman, OK 73019 USA.
[Court, Mary] Univ Oklahoma, Sch Ind Engn, Norman, OK 73019 USA.
RP Maalouf, M (reprint author), Khalifa Univ, POB 127788, Abu Dhabi, U Arab Emirates.
EM maher.maalouf@kustar.ac.ae; camacken@nps.edu; sridhar@ou.edu;
mcourt@ou.edu
OI Maalouf, Maher/0000-0003-0516-6870
NR 37
TC 3
Z9 3
U1 1
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0165-0114
EI 1872-6801
J9 FUZZY SET SYST
JI Fuzzy Sets Syst.
PD NOV 16
PY 2014
VL 255
BP 30
EP 40
DI 10.1016/j.fss.2014.03.010
PG 11
WC Computer Science, Theory & Methods; Mathematics, Applied; Statistics &
Probability
SC Computer Science; Mathematics
GA AR1XV
UT WOS:000343378800003
ER
PT J
AU Grizzle, RE
Ward, LG
Fredriksson, DW
Irish, JD
Langan, R
Heinig, CS
Greene, JK
Abeels, HA
Peter, CR
Eberhardt, AL
AF Grizzle, R. E.
Ward, L. G.
Fredriksson, D. W.
Irish, J. D.
Langan, R.
Heinig, C. S.
Greene, J. K.
Abeels, H. A.
Peter, C. R.
Eberhardt, A. L.
TI Long-term seafloor monitoring at an open ocean aquaculture site in the
western Gulf of Maine, USA: Development of an adaptive protocol
SO MARINE POLLUTION BULLETIN
LA English
DT Article
DE Finfish cages; Benthos; Environmental impacts; Adaptive monitoring
ID FISH CAGE; BENTHIC COMMUNITIES; WASTE TRANSPORT; SYSTEM; SEDIMENTS;
IMPACTS; DEPOSITION; DYNAMICS; CULTURE; FARMS
AB The seafloor at an open ocean finfish aquaculture facility in the western Gulf of Maine, USA was monitored from 1999 to 2008 by sampling sites inside a predicted impact area modeled by oceanographic conditions and fecal and food settling characteristics, and nearby reference sites. Univariate and multivariate analyses of benthic community measures from box core samples indicated minimal or no significant differences between impact and reference areas. These findings resulted in development of an adaptive monitoring protocol involving initial low-cost methods that required more intensive and costly efforts only when negative impacts were initially indicated. The continued growth of marine aquaculture is dependent on further development of farming methods that minimize negative environmental impacts, as well as effective monitoring protocols. Adaptive monitoring protocols, such as the one described herein, coupled with mathematical modeling approaches, have the potential to provide effective protection of the environment while minimize monitoring effort and costs. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Grizzle, R. E.; Ward, L. G.] Univ New Hampshire, Jackson Estuarine Lab, Sch Marine Sci & Ocean Engn, Durham, NH 03824 USA.
[Ward, L. G.] Univ New Hampshire, Dept Earth Sci, Ctr Coastal & Ocean Mapping, Durham, NH 03824 USA.
[Fredriksson, D. W.] US Naval Acad, Dept Naval Architecture & Ocean Engn, Annapolis, MD 21402 USA.
[Irish, J. D.] Univ New Hampshire, Ocean Engn Program, Durham, NH 03824 USA.
[Langan, R.] Univ New Hampshire, Sch Marine Sci & Ocean Engn, Durham, NH 03824 USA.
[Heinig, C. S.] MER Assessment Corp, Brunswick, ME 04011 USA.
[Greene, J. K.] Nature Conservancy, North Amer Reg, Oceans & Coasts Program, Arlington, VA 22203 USA.
[Abeels, H. A.] Univ Florida, Inst Food & Agr Sci, Cocoa, FL 32926 USA.
[Peter, C. R.; Eberhardt, A. L.] Univ New Hampshire, Dept Nat Resources, Jackson Estuarine Lab, Durham, NH 03824 USA.
RP Grizzle, RE (reprint author), Univ New Hampshire, Jackson Estuarine Lab, Sch Marine Sci & Ocean Engn, Durham, NH 03824 USA.
EM ray.grizzle@unh.edu
FU National Oceanic and Atmospehric Administration; UNH Atlantic Marine
Aquaculture Center; UNH/NOAA Joint Hydrographic Center Award
[NA10NOS4000073]
FX The environmental monitoring program for the University of New Hampshire
Open Ocean Aquaculture Demonstration Project was funded by the National
Oceanic and Atmospehric Administration via grants to the University of
New Hampshire (UNH) Cooperative Institute for New England Mariculture
and Fisheries (CINEMAR) and the UNH Atlantic Marine Aquaculture Center.
Additional funding for Ward was provided by UNH/NOAA Joint Hydrographic
Center Award NA10NOS4000073. Nearly all of the field sampling and
deployments was conducted using UNH Research Vessel Gulf Challenger.
Field work was assisted by a number of UNH personnel including Mellissa
Brodeur, Jamie Adams and David Shay. The manuscript was improved
substantially by the thoughtful comments of one reviewer.
NR 53
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U1 1
U2 24
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 NOV 15
PY 2014
VL 88
IS 1-2
BP 129
EP 137
DI 10.1016/j.marpolbul.2014.09.014
PG 9
WC Environmental Sciences; Marine & Freshwater Biology
SC Environmental Sciences & Ecology; Marine & Freshwater Biology
GA AU3CG
UT WOS:000345489800027
PM 25287226
ER
PT J
AU Agassi, YD
Oates, DE
AF Agassi, Y. D.
Oates, D. E.
TI Intermodulation distortion and surface resistance in impurity-doped YBCO
and MgB2
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article
DE Surface resistance; Magnesium diboride; Intermodulation distortion; Thin
films; Energy-gap symmetry
ID D-WAVE SUPERCONDUCTOR; TEMPERATURE PENETRATION-DEPTH; THIN-FILMS;
MICROWAVE RESPONSE; SCATTERING; IMPEDANCE; NONLINEARITY; RESONATORS;
DEPENDENCE; EQUATIONS
AB Calculations of the microwave intermodulation distortion (IMD) and surface resistance of impuritydoped YBCO, MgB2 and Nb are presented. These are qualitatively distinct superconductors due to their energy-gap symmetries, d-wave (l = 2), i-wave (l = 6) and s-wave (l = 0), respectively. The calculations are compared with previously published IMD and surface-resistance measurements of impurity-doped YBCO and Nb. The agreement between the data and fitted calculations is excellent in all cases. In the absence of IMD and surface-resistance measurements for doped MgB2, we present representative predictions. The calculations are based on a Green's-function approach that yields analytical expressions for the penetration depth and the nonlinear kernel in the constitutive relation. This penetration-depth expression reproduces the measured T-2 low-temperature variation for doped superconductors and the surface-resistance reduction over that of the pure material. Regarding the IMD in superconductors with a nodal energy gap, the effect of doping is to enhance its magnitude and suppress its low-temperature 1/T-2 divergence predicted by the nonlinear Meissner effect. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Agassi, Y. D.] Naval Surface Warfare Ctr, Carderock Div, Bethesda, MD 20817 USA.
[Oates, D. E.] MIT, Lincoln Lab, Lexington, MA 02420 USA.
RP Oates, DE (reprint author), MIT, Lincoln Lab, Lexington, MA 02420 USA.
EM oates@ll.mit.edu
FU Naval Surface Warfare Center, Carderock Division, Bethesda, MD
FX This work was supported by the Naval Surface Warfare Center, Carderock
Division, Bethesda, MD.
NR 72
TC 1
Z9 1
U1 1
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
EI 1873-2143
J9 PHYSICA C
JI Physica C
PD NOV 15
PY 2014
VL 506
SI SI
BP 119
EP 132
DI 10.1016/j.physc.2014.09.006
PG 14
WC Physics, Applied
SC Physics
GA AS4JD
UT WOS:000344240100018
ER
PT J
AU Love, CT
Virji, MBV
Rocheleau, RE
Swider-Lyons, KE
AF Love, Corey T.
Virji, Maheboob B. V.
Rocheleau, Richard E.
Swider-Lyons, Karen E.
TI State-of-health monitoring of 18650 4S packs with a single-point
impedance diagnostic
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Electrochemical impedance spectroscopy; Lithium ion battery; State of
health; Overcharge; Safety; 18650
ID LITHIUM-ION BATTERY; ELECTROCHEMICAL IMPEDANCE; LOW-TEMPERATURE;
PERFORMANCE; LI; CELLS; SPECTROSCOPY; LIXCOO2; SAFETY; MODEL
AB The state-of-health (SOH) of Li-ion batteries and battery packs must be monitored effectively for abuse to prevent failure and accidents. In a previous publication, we described a single-point impedance diagnostic method for detecting damage in single prismatic lithium polymer rechargeable cells subjected to overcharge abuse. We now determine whether the single-point impedance diagnostic method is applicable to 45 battery packs. At 316 Hz, commercial 18650 LiCoO2 cells are determined to have the least change in impedance response when cycled between 3.0 and 4.2 V, for states-of-charge (SOC) of 0-100%. The impedance response of single cells at 316 Hz changes dramatically during overcharge (SOC = 125%), presumably due to change in their solid electrolyte interface (SEI) layers at the electrodes. When a single cell is purposely subjected to such overcharge abuse and then integrated into a 4S pack with 3 other healthy cells, the impedance response of the 4S pack at 316 Hz also changes, despite variances in the impedance response of each of the 3 healthy cells. The results suggest that this single-point impedance method could serve as a diagnostic in an all-inclusive battery management system to identify overcharge abuse of single cells without individual cell monitoring. Published by Elsevier B.V.
C1 [Love, Corey T.; Swider-Lyons, Karen E.] US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
[Virji, Maheboob B. V.; Rocheleau, Richard E.] Univ Hawaii Manoa, Hawaii Nat Energy Inst, Honolulu, HI 96822 USA.
RP Love, CT (reprint author), US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
EM corey.love@nrl.navy.mil
NR 28
TC 12
Z9 12
U1 4
U2 90
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
EI 1873-2755
J9 J POWER SOURCES
JI J. Power Sources
PD NOV 15
PY 2014
VL 266
BP 512
EP 519
DI 10.1016/j.jpowsour.2014.05.033
PG 8
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA AL0GV
UT WOS:000338806300065
ER
PT J
AU Hillson, R
Alejandre, JD
Jacobsen, KH
Ansumana, R
Bockarie, AS
Bangura, U
Lamin, JM
Malanoski, AP
Stenger, DA
AF Hillson, Roger
Alejandre, Joel D.
Jacobsen, Kathryn H.
Ansumana, Rashid
Bockarie, Alfred S.
Bangura, Umaru
Lamin, Joseph M.
Malanoski, Anthony P.
Stenger, David A.
TI Methods for Determining the Uncertainty of Population Estimates Derived
from Satellite Imagery and Limited Survey Data: A Case Study of Bo City,
Sierra Leone
SO PLOS ONE
LA English
DT Article
ID RESOLUTION; EPIDEMIC
AB This study demonstrates the use of bootstrap methods to estimate the total population of urban and periurban areas using satellite imagery and limited survey data. We conducted complete household surveys in 20 neighborhoods in the city of Bo, Sierra Leone, which collectively were home to 25,954 persons living in 1,979 residential structures. For five of those twenty sections, we quantized the rooftop areas of structures extracted from satellite images. We used bootstrap statistical methods to estimate the total population of the pooled sections, including the associated uncertainty intervals, as a function of sample size. Evaluations based either on rooftop area per person or on the mean number of occupants per residence both converged on the true population size. We demonstrate with this simulation that demographic surveys of a relatively small proportion of residences can provide a foundation for accurately estimating the total population in conjunction with aerial photographs.
C1 [Hillson, Roger; Alejandre, Joel D.] Naval Res Lab, Div Informat Technol, Washington, DC USA.
[Jacobsen, Kathryn H.] George Mason Univ, Dept Global & Community Hlth, Fairfax, VA 22030 USA.
[Ansumana, Rashid; Bockarie, Alfred S.] Njala Univ, Bo, Sierra Leone.
[Ansumana, Rashid; Bockarie, Alfred S.; Bangura, Umaru; Lamin, Joseph M.] Mercy Hosp Res Lab, Bo, Sierra Leone.
[Malanoski, Anthony P.; Stenger, David A.] Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
RP Stenger, DA (reprint author), Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
EM david.stenger@nrl.navy.mil
RI Jacobsen, Kathryn/B-5857-2008; Malanoski, Anthony/C-7814-2011
OI Jacobsen, Kathryn/0000-0002-4198-6246; Malanoski,
Anthony/0000-0001-6192-888X
FU Defense Threat Reduction Agency, Joint Science and Technology Office
FX This work was funded by the Defense Threat Reduction Agency, Joint
Science and Technology Office via contract to the United States Naval
Research Laboratory. There is no past, present or future Intellectual
Property associated with the work described in the paper, and none of
the authors have any financial interests or conflicts in the outcome of
the study. The funders had no role in study design, data collection and
analysis, decision to publish, or preparation of the manuscript.
NR 30
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U1 0
U2 5
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 14
PY 2014
VL 9
IS 11
AR e112241
DI 10.1371/journal.pone.0112241
PG 14
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AU4DF
UT WOS:000345558500039
PM 25398101
ER
PT J
AU Seo, DM
Afroz, T
Allen, JL
Boyle, PD
Trulove, PC
De Long, HC
Henderson, WA
AF Seo, Daniel M.
Afroz, Taliman
Allen, Joshua L.
Boyle, Paul D.
Trulove, Paul C.
De Long, Hugh C.
Henderson, Wesley A.
TI Structural Interactions within Lithium Salt Solvates: Cyclic Carbonates
and Esters
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID AMORPHOUS CONCENTRATED LIQUID; PROPYLENE CARBONATE; ETHYLENE CARBONATE;
GAMMA-BUTYROLACTONE; CRYSTAL-STRUCTURE; AB-INITIO; IONIC ASSOCIATION;
LOW-TEMPERATURE; NONAQUEOUS ELECTROLYTES; VIBRATIONAL FREQUENCIES
AB Only limited information is available regarding the manner in which cyclic carbonate and ester solvents coordinate Li+ cations in electrolyte solutions for lithium batteries. One approach to gleaning significant insight into these interactions is to examine crystalline solvate structures. To this end, eight new solvate structures are reported with ethylene carbonate, gamma-butyrolactone, and gamma-valerolactone: (EC)(3):LiClO4, (EC)(2):LiClO4, (EC)(2):LiBF4, (GBL)(4):LiPF6, (GBL)(1):LiClO4, (GVL)(1):LiClO4, (GBL)(1):LiBF4, and (GBL)(1):LiCF3SO3. The crystal structure of (EC)(1):LiCF3SO3 is also re-reported for comparison. These structures enable the factors that govern the manner in which the ions are coordinated and the ion/solvent packing-in the solid-state-to be scrutinized in detail.
C1 [Seo, Daniel M.; Afroz, Taliman; Allen, Joshua L.; Henderson, Wesley A.] N Carolina State Univ, Dept Chem & Biomol Engn, Ion Liquids & Electrolytes Energy Technol ILEET L, Raleigh, NC 27695 USA.
[Boyle, Paul D.] N Carolina State Univ, Dept Chem, Xray Struct Facil, Raleigh, NC 27695 USA.
[Trulove, Paul C.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
[De Long, Hugh C.] Air Force Off Sci Res, Arlington, VA 22203 USA.
[Henderson, Wesley A.] Pacific NW Natl Lab, Electrochem Mat & Syst Grp, Energy & Environm Directorate, Richland, WA 99352 USA.
RP Henderson, WA (reprint author), N Carolina State Univ, Dept Chem & Biomol Engn, Ion Liquids & Electrolytes Energy Technol ILEET L, Raleigh, NC 27695 USA.
EM Wesley.Henderson@pnnl.gov
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering [DE-SC0002169]
FX The authors wish to express their gratitude to the U.S. Department of
Energy, Office of Basic Energy Sciences, Division of Materials Sciences
and Engineering, which supported this research under Award DE-SC0002169.
NR 60
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U1 5
U2 32
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 13
PY 2014
VL 118
IS 45
BP 25884
EP 25889
DI 10.1021/jp5079168
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA AT5IW
UT WOS:000344978000008
ER
PT J
AU Schaefer, GH
ten Brummelaar, T
Gies, DR
Farrington, CD
Kloppenborg, B
Chesneau, O
Monnier, JD
Ridgway, ST
Scott, N
Tallon-Bosc, I
McAlister, HA
Boyajian, T
Maestro, V
Mourard, D
Meilland, A
Nardetto, N
Stee, P
Sturmann, J
Vargas, N
Baron, F
Ireland, M
Baines, EK
Che, X
Jones, J
Richardson, ND
Roettenbacher, RM
Sturmann, L
Turner, NH
Tuthill, P
van Belle, G
von Braun, K
Zavala, RT
Banerjee, DPK
Ashok, NM
Joshi, V
Becker, J
Muirhead, PS
AF Schaefer, G. H.
ten Brummelaar, T.
Gies, D. R.
Farrington, C. D.
Kloppenborg, B.
Chesneau, O.
Monnier, J. D.
Ridgway, S. T.
Scott, N.
Tallon-Bosc, I.
McAlister, H. A.
Boyajian, T.
Maestro, V.
Mourard, D.
Meilland, A.
Nardetto, N.
Stee, P.
Sturmann, J.
Vargas, N.
Baron, F.
Ireland, M.
Baines, E. K.
Che, X.
Jones, J.
Richardson, N. D.
Roettenbacher, R. M.
Sturmann, L.
Turner, N. H.
Tuthill, P.
van Belle, G.
von Braun, K.
Zavala, R. T.
Banerjee, D. P. K.
Ashok, N. M.
Joshi, V.
Becker, J.
Muirhead, P. S.
TI The expanding fireball of Nova Delphini 2013
SO NATURE
LA English
DT Article
ID CLASSICAL NOVAE; INTERFEROMETRIC OBSERVATIONS; SPECTROSCOPIC EVOLUTION;
RECURRENT NOVAE; T PYXIDIS; OUTBURST; SHELLS; SPECTROGRAPH; REMNANTS;
PHASE
AB A classical nova occurs when material accreting onto the surface of a white dwarf in a close binary system ignites in a thermonuclear runaway(1,2). Complex structures observed in the ejecta at late stages(3-5) could result from interactions with the companion during the common-envelope phase(6,7). Alternatively, the explosion could be intrinsically bipolar, resulting from a localized ignition on the surface of the white dwarf(8) or as a consequence of rotational distortion(9,10). Studying the structure of novae during the earliest phases is challenging because of the high spatial resolution needed to measure their small sizes(11). Here we report near-infrared interferometric measurements of the angular size of Nova Delphini 2013, starting one day after the explosion and continuing with extensive time coverage during the first 43 days. Changes in the apparent expansion rate can be explained by an explosion model consisting of an optically thick core surrounded by a diffuse envelope. The optical depth of the ejected material changes as it expands. We detect an ellipticity in the light distribution, suggesting a prolate or bipolar structure that develops as early as the second day. Combining the angular expansion rate with radial velocity measurements, we derive a geometric distance to the nova of 4.54 +/- 60.59 kiloparsecs from the Sun.
C1 [Schaefer, G. H.; ten Brummelaar, T.; Farrington, C. D.; Scott, N.; Sturmann, J.; Vargas, N.; Sturmann, L.; Turner, N. H.] Georgia State Univ, CHARA Array, Mt Wilson Observ, Mt Wilson, CA 91023 USA.
[Gies, D. R.; Kloppenborg, B.; McAlister, H. A.; Baron, F.; Jones, J.] Georgia State Univ, Ctr High Angular Resolut Astron, Atlanta, GA 30302 USA.
[Gies, D. R.; Kloppenborg, B.; McAlister, H. A.; Baron, F.; Jones, J.] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30302 USA.
[Chesneau, O.; Mourard, D.; Meilland, A.; Nardetto, N.; Stee, P.] Univ Sophia Antipolis UNS, CNRS, Observ Cote Azur, Lab Lagrange,UMR 7293, F-06304 Nice 4, France.
[Monnier, J. D.; Che, X.; Roettenbacher, R. M.; Becker, J.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA.
[Ridgway, S. T.] Natl Opt Astron Observ, Tucson, AZ 85719 USA.
[Tallon-Bosc, I.] Univ Lyon 1, Observ Lyon, F-69230 St Genis Laval, France.
[Tallon-Bosc, I.] Ecole Normale Super Lyon, Ctr Rech Astrophys Lyon, CNRS, UMR 5574, F-69007 Lyon, France.
[Boyajian, T.] Yale Univ, Dept Astron, New Haven, CT 06511 USA.
[Maestro, V.] Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia.
[Ireland, M.] Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia.
[Baines, E. K.] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Richardson, N. D.] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada.
[Richardson, N. D.] Univ Montreal, CRAQ, Montreal, PQ H3C 3J7, Canada.
[van Belle, G.] Lowell Observ, Flagstaff, AZ 86001 USA.
[von Braun, K.] Max Planck Inst Astron, D-69117 Heidelberg, Germany.
[Zavala, R. T.] US Naval Observ, Flagstaff Stn, Flagstaff, AZ 86001 USA.
[Banerjee, D. P. K.; Ashok, N. M.; Joshi, V.] Phys Res Lab, Astron & Astrophys Div, Ahmadabad 380009, Gujarat, India.
[Becker, J.] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91106 USA.
[Muirhead, P. S.] Boston Univ, Dept Astron, Boston, MA 02215 USA.
RP Schaefer, GH (reprint author), Georgia State Univ, CHARA Array, Mt Wilson Observ, Mt Wilson, CA 91023 USA.
EM schaefer@chara-array.org
RI Zavala, Robert/D-7821-2011; Muirhead, Philip/H-2273-2014;
OI Zavala, Robert/0000-0002-9402-2870; Muirhead,
Philip/0000-0002-0638-8822; Becker, Juliette/0000-0002-7733-4522;
Richardson, Noel/0000-0002-2806-9339
FU National Science Foundation [AST-1009080]; National Science Foundation
through NSF grants [AST 0908253, AST 1211129]; Georgia State University
through the College of Arts and Sciences; National Aeronautics and Space
Administration; National Science Foundation
FX We acknowledge the variable star observations from the AAVSO
International Database contributed by observers worldwide and used in
this research. We thank O. Garde and other members of the Astronomical
Ring for Access to Spectroscopy for use of their archive of Nova Del
2013 spectra. We thank G. J. Schwarz, S. N. Shore, and F. M. Walter for
discussions that helped us to interpret the nova observations. This
material is based upon work supported by the National Science Foundation
under grant number AST-1009080. The CHARA Array is funded by the
National Science Foundation through NSF grants AST 0908253 and AST
1211129, and by Georgia State University through the College of Arts and
Sciences. This publication made use of data products from the Two Micron
All Sky Survey, which is a joint project of the University of
Massachusetts and the Infrared Processing and Analysis Center/California
Institute of Technology, funded by the National Aeronautics and Space
Administration and the National Science Foundation.
NR 49
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PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
EI 1476-4687
J9 NATURE
JI Nature
PD NOV 13
PY 2014
VL 515
IS 7526
BP 234
EP U182
DI 10.1038/nature13834
PG 14
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AT0MZ
UT WOS:000344631400042
PM 25363778
ER
PT J
AU Stimpert, AK
DeRuiter, SL
Southall, BL
Moretti, DJ
Falcone, EA
Goldbogen, JA
Friedlaender, A
Schorr, GS
Calambokidis, J
AF Stimpert, A. K.
DeRuiter, S. L.
Southall, B. L.
Moretti, D. J.
Falcone, E. A.
Goldbogen, J. A.
Friedlaender, A.
Schorr, G. S.
Calambokidis, J.
TI Acoustic and foraging behavior of a Baird's beaked whale, Berardius
bairdii, exposed to simulated sonar
SO SCIENTIFIC REPORTS
LA English
DT Article
ID WESTERN NORTH PACIFIC; PREY CAPTURE; MESOPLODON-DENSIROSTRIS;
PHYSETER-MACROCEPHALUS; MEGAPTERA-NOVAEANGLIAE; FEEDING-BEHAVIOR; KILLER
WHALES; ECHOLOCATION; PORPOISES; KINEMATICS
AB Beaked whales are hypothesized to be particularly sensitive to anthropogenic noise, based on previous strandings and limited experimental and observational data. However, few species have been studied in detail. We describe the underwater behavior of a Baird's beaked whale (Berardius bairdii) from the first deployment of a multi-sensor acoustic tag on this species. The animal exhibited shallow (23 +/- 15 m max depth), intermediate (324 +/- 49 m), and deep (1138 +/- 243 m) dives. Echolocation clicks were produced with a mean inter-click interval of approximately 300 ms and peak frequency of 25 kHz. Two deep dives included presumed foraging behavior, with echolocation pulsed sounds (presumed prey capture attempts) associated with increased maneuvering, and sustained inverted swimming during the bottom phase of the dive. A controlled exposure to simulated mid-frequency active sonar (3.5-4 kHz) was conducted 4 hours after tag deployment, and within 3 minutes of exposure onset, the tagged whale increased swim speed and body movement, and continued to show unusual dive behavior for each of its next three dives, one of each type. These are the first data on the acoustic foraging behavior in this largest beaked whale species, and the first experimental demonstration of a response to simulated sonar.
C1 [Stimpert, A. K.] US Navy, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA.
[Stimpert, A. K.] Moss Landing Marine Labs, Vertebrate Ecol Lab, Moss Landing, CA 95039 USA.
[DeRuiter, S. L.] Univ St Andrews, Ctr Res Ecol & Environm Modeling, St Andrews, Fife, Scotland.
[Southall, B. L.] Southall Environm Associates Inc, Aptos, CA USA.
[Moretti, D. J.] Naval Undersea Warfare Ctr, Newport, RI USA.
[Falcone, E. A.; Schorr, G. S.; Calambokidis, J.] Cascadia Res Collect, Olympia, WA USA.
[Goldbogen, J. A.] Stanford Univ, Hopkins Marine Stn, Dept Biol, Pacific Grove, CA 93950 USA.
[Friedlaender, A.] Oregon State Univ, Hatfield Marine Sci Ctr, Sea & Marine Mammal Inst, Newport, OR 97365 USA.
RP Stimpert, AK (reprint author), US Navy, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA.
EM astimpert@mlml.calstate.edu
OI Goldbogen, Jeremy/0000-0002-4170-7294; DeRuiter,
Stacy/0000-0002-0571-0306
FU US Navy Chief of Naval Operations; Environmental Readiness Program;
Office of Naval Research; Naval Postgraduate School; National Research
Council; NMFS [14534]; Channel Islands National Marine Sanctuary
[2010-003]
FX We gratefully acknowledge the assistance of all the SOCAL-BRS team
members, especially Peter Tyack, Patricia Arranz, John Joseph, Ashley
Dilley, Scott Fisher, Karin Fulkerson, Ron Morrissey, the U. S. Navy's
SCORE range, and the crew of the R/V Truth. Eva Nosal provided valuable
advice, and we also acknowledge the contributions of Mark Johnson, who
developed many tag data analysis tools that were modified for this work.
Research was supported by the US Navy Chief of Naval Operations,
Environmental Readiness Program, the Office of Naval Research, the Naval
Postgraduate School, and the National Research Council. Experiments were
performed under NMFS permit no. 14534 and Channel Islands National
Marine Sanctuary permit no. 2010-003 (B. Southall, principal
investigator for both).
NR 48
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U1 11
U2 72
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 NOV 13
PY 2014
VL 4
AR 7031
DI 10.1038/srep07031
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AT2JZ
UT WOS:000344762200006
PM 25391309
ER
PT J
AU Bashkansky, M
Vurgaftman, I
Pipino, ACR
Reintjes, J
AF Bashkansky, Mark
Vurgaftman, Igor
Pipino, Andrew C. R.
Reintjes, J.
TI Significance of heralding in spontaneous parametric down-conversion
SO PHYSICAL REVIEW A
LA English
DT Article
ID SINGLE-PHOTON SOURCES
AB Single photons exhibit nonclassical, counterintuitive behavior that can be exploited in the developing field of quantum technology. They are needed for various applications such as quantum key distribution, optical quantum information processing, quantum computing, intensity measurement standards, and others yet to be discovered in this developing field. This drives the current intensive research into the realization of true deterministic sources of single photons on demand. Lacking such a source, many researchers default to the well-established workhorse: spontaneous parametric down-conversion that generates entangled signal-idler pairs. Since this source is thermal statistical in nature, it is common to use a detected idler photon to herald the production of a signal photon. The need exists to determine the quality of the single photons generated in the heralded signal beam. Quite often, the literature reports a heralded second-order coherence function of the signal photons conditioned on the idler photons using readily available single-photon detectors. In this work we examine the applicability of this technique to single-photon characterization and the consequences of the fact that the most commonly used single-photon detectors are not photon-number resolving. Our results show that this method using non-photon-resolving detectors can only be used to characterize the signal-idler correlations rather than the nature of the signal-photon state alone.
C1 [Bashkansky, Mark; Vurgaftman, Igor] Naval Res Lab, Washington, DC 20375 USA.
[Pipino, Andrew C. R.] Strateg Engn Syst, Springfield, VA 22153 USA.
[Reintjes, J.] Sotera Def Solut, Annapolis Jct, MD 20701 USA.
RP Bashkansky, M (reprint author), Naval Res Lab, Code 5613, Washington, DC 20375 USA.
EM bashkansky@nrl.navy.mil
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 12
TC 3
Z9 4
U1 0
U2 10
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 NOV 12
PY 2014
VL 90
IS 5
AR 053825
DI 10.1103/PhysRevA.90.053825
PG 6
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA AY5PC
UT WOS:000347623400012
ER
PT J
AU Strycharz-Glaven, SM
Roy, J
Boyd, D
Snider, R
Erickson, JS
Tender, LM
AF Strycharz-Glaven, Sarah M.
Roy, Jared
Boyd, Darryl
Snider, Rachel
Erickson, Jeffrey S.
Tender, Leonard M.
TI Electron Transport through Early Exponential-Phase Anode-Grown Geobacter
sulfurreducens Biofilms
SO CHEMELECTROCHEM
LA English
DT Article
DE biofilms; biofuel cells; electrochemistry; electron transfer;
interdigitated microelectrode arrays
ID CHARGE-TRANSPORT; RESPIRING BACTERIA; MICROBIAL NANOWIRES; CONDUCTIVITY;
FILMS; SYSTEMS; SPECTROSCOPY; POLYANILINE; FABRICATION; MICROSCOPY
AB Geobacter sulfurreducens biofilms were grown to early exponential phase (i.e. the point at which the catalytic current first begins to increase) on interdigitated microelectrode arrays (IDAs), resulting in the formation of sparse cell clusters surrounded by extracellular polymeric substance (EPS). Continuous domains of EPS (defined here to include extracellular materials including filaments), but not cell clusters, were observed to bridge the gaps between adjacent electrode bands. Electrochemical gate measurements revealed electrical continuity between adjacent IDA electrode bands, indicating that extracellular electron transport (EET) occurs through the EPS. The dependency of the source-drain current on the gate potential is peak shaped, which is consistent with EPS acting as a redox conductor. The gate potential at which the maximum source-drain current occurs is approximately 0.13V more positive than that for stationary-phase biofilms, indicating that redox cofactors involved in EET at the early exponential phase are different to those at the stationary phase.
C1 [Strycharz-Glaven, Sarah M.; Erickson, Jeffrey S.; Tender, Leonard M.] Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
[Roy, Jared] George Mason Univ, Fairfax, VA 22030 USA.
[Boyd, Darryl; Snider, Rachel] CNR, Washington, DC 20418 USA.
RP Strycharz-Glaven, SM (reprint author), Naval Res Lab, Ctr Bio Mol Sci & Engn, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM sarah.glaven@nrl.navy.mil; tender@nrl.navy.mil
RI Erickson, Jeffrey/F-6273-2011
FU Naval Research Laboratory; Office of Naval Research
FX Funding was provided by the Naval Research Laboratory and the Office of
Naval Research.
NR 59
TC 7
Z9 7
U1 5
U2 40
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 2196-0216
J9 CHEMELECTROCHEM
JI ChemElectroChem
PD NOV 11
PY 2014
VL 1
IS 11
SI SI
BP 1957
EP 1965
DI 10.1002/celc.201402168
PG 9
WC Electrochemistry
SC Electrochemistry
GA AT9GW
UT WOS:000345237000028
ER
PT J
AU Orienti, M
D'Ammando, F
Giroletti, M
Finke, J
Ajello, M
Dallacasa, D
Venturi, T
AF Orienti, M.
D'Ammando, F.
Giroletti, M.
Finke, J.
Ajello, M.
Dallacasa, D.
Venturi, T.
TI Exploring the multiband emission of TXS 0536+145: the most distant
gamma-ray flaring blazar
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE radiation mechanisms: non-thermal; galaxies quasars: individual: TXS
0536+145; gamma-rays: general; radio continuum: general
ID ACTIVE GALACTIC NUCLEI; LARGE-AREA TELESCOPE; EXTRAGALACTIC BACKGROUND
LIGHT; BL LACERTAE OBJECTS; SUPERLUMINAL MOTION; COMPTON ANALYSIS;
BRIGHT BLAZARS; SOURCE CATALOG; MISSION; RADIO
AB We report results of a multiband monitoring campaign of the flat spectrum radio quasar TXS 0536+145 at redshift 2.69. This source was detected during a very high gamma-ray activity state in 2012 March by the Large Area Telescope on board Fermi, becoming the gamma-ray flaring blazar at the highest redshift detected so far. At the peak of the flare the source reached an apparent isotropic gamma-ray luminosity of 6.6 x 10(49) erg s(-1) which is comparable to the values achieved by the most luminous blazars. This activity triggered radio-to-X-rays monitoring observations by Swift, Very Long Baseline Array, European VLBI Network, and Medicina single-dish telescope. Significant variability was observed from radio to X-rays supporting the identification of the gamma-ray source with TXS 0536+145. Both the radio and gamma-ray light curves show a similar behaviour, with the gamma-rays leading the radio variability with a time lag of about 4-6 months. The luminosity increase is associated with a flattening of the radio spectrum. No new superluminal component associated with the flare was detected in high-resolution parsec-scale radio images. During the flare the gamma-ray spectrum seems to deviate from a power law, showing a curvature that was not present during the average activity state. The gamma-ray properties of TXS 0536+145 are consistent with those shown by the high-redshift gamma-ray blazar population.
C1 [Orienti, M.; D'Ammando, F.; Giroletti, M.; Dallacasa, D.; Venturi, T.] Ist Radioastron, INAF, I-40129 Bologna, Italy.
[D'Ammando, F.; Dallacasa, D.] Univ Bologna, Dipartimento Fis & Astron, I-40127 Bologna, Italy.
[Finke, J.] US Naval Res Lab, Washington, DC 20375 USA.
[Ajello, M.] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA.
RP Orienti, M (reprint author), Ist Radioastron, INAF, Via Gobetti 101, I-40129 Bologna, Italy.
EM orienti@ira.inaf.it
OI orienti, monica/0000-0003-4470-7094
FU European national research council; Chinese national research council;
South African national research council; European Commission [283393];
NASA
FX We thank D. Blinov for providing the 70-cm AZT-8 optical data. We are
grateful to D. J. Thompson and S. Digel for carefully reading the
manuscript. We thank the anonymous referee for useful suggestions. The
VLBA is operated by the US National Radio Astronomy Observatory which is
a facility of the National Science Foundation operated under a
cooperative agreement by Associated Universities, Inc. The European VLBI
Network is a joint facility of European, Chinese, South African, and
other radio astronomy institutes funded by their national research
councils. The research leading to these results has received funding
from the European Commission Seventh Framework Programme (FP/2007-2013)
under grant agreement no. 283393 (RadioNet3).; This research has made
use of the NASA/IPAC Extragalactic Database (NED) which is operated by
the JPL, Californian Institute of Technology, under contract with the
NASA.
NR 39
TC 3
Z9 3
U1 0
U2 1
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0035-8711
EI 1365-2966
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD NOV 11
PY 2014
VL 444
IS 4
BP 3040
EP 3051
DI 10.1093/mnras/stu1644
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AR2FW
UT WOS:000343400100004
ER
PT J
AU Kong, BD
Jin, ZH
Kim, KW
AF Kong, Byoung Don
Jin, Zhenghe
Kim, Ki Wook
TI Hot-Electron Transistors for Terahertz Operation Based on
Two-Dimensional Crystal Heterostructures
SO PHYSICAL REVIEW APPLIED
LA English
DT Article
ID HEXAGONAL BORON-NITRIDE; GRAPHENE; FREQUENCY; DEVICES; STATES; LIMITS
AB This work illustrates the feasibility of ultra-high-frequency operation in a vertical three-terminal electronic device by exploiting the advantages of two-dimensional (2D) crystal heterostructures. The proposed device utilizes a gapped 2D material as the tunnel barrier between a graphene base and a metallic emitter, while the Schottky contact with an n-type substrate forms the base-collector junction. The ultrathin active region formed by the 2D insulating and semimetallic layers ensure the required subnanometer-scale control in the thickness and the lateral uniformity, overcoming the major limitations of conventional 3D materials. Atomistic simulations based on the coupled density functional theory and nonequilibrium Green's function method, in combination with an equivalent device model, clearly reveal well-defined transistor characteristics with a good current drive. The analysis also points out the prominence of emitter material selection for superior performance. With proper optimization, the device is capable of reaching the intrinsic cutoff frequencies over a few THz even under realistic constraints, indicating a technological pathway beyond the current limit.
C1 [Kong, Byoung Don; Jin, Zhenghe; Kim, Ki Wook] N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA.
RP Kong, BD (reprint author), US Navy, Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA.
EM kwk@ncsu.edu
RI KONG, BYOUNG DON/A-2186-2012
OI KONG, BYOUNG DON/0000-0003-4072-4399
FU FAME (Function Accelerated nanoMaterial Engineering Center); U.S. Office
of Naval Research
FX This work was supported in part by FAME (Function Accelerated
nanoMaterial Engineering Center) [one of six centers of STARnet
(Semiconductor Technology Advanced Research Network), a SRC
(Semiconductor Research Corporation) program sponsored by MARCO
(Microelectronics Advanced Research Corporation) and DARPA] and the U.S.
Office of Naval Research.
NR 36
TC 4
Z9 4
U1 4
U2 22
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2331-7019
J9 PHYS REV APPL
JI Phys. Rev. Appl.
PD NOV 10
PY 2014
VL 2
IS 5
AR 054006
DI 10.1103/PhysRevApplied.2.054006
PG 9
WC Physics, Applied
SC Physics
GA AT4OQ
UT WOS:000344919800001
ER
PT J
AU Fischer, J
Abel, NP
Gonzalez-Alfonso, E
Dudley, CC
Satyapal, S
van Hoof, PAM
AF Fischer, Jacqueline
Abel, N. P.
Gonzalez-Alfonso, E.
Dudley, C. C.
Satyapal, S.
van Hoof, P. A. M.
TI A FAR-INFRARED SPECTRAL SEQUENCE OF GALAXIES: TRENDS AND MODELS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: active; galaxies: ISM; galaxies: starburst; infrared:
galaxies; radiation mechanisms: thermal
ID LONG-WAVELENGTH SPECTROMETER; STRUCTURE LINE DIAGNOSTICS; RAY DOMINATED
REGIONS; STAR-FORMING REGIONS; ISO-LWS SPECTROSCOPY; PHYSICAL
CONDITIONS; MOLECULAR OUTFLOWS; HERSCHEL-PACS; INTERSTELLAR-MEDIUM;
STARBURST GALAXY
AB We present a framework for the interpretation of the far-infrared spectra of galaxies in which we have expanded the model parameters compared with previous work by varying the ionization parameter U, column density N(H), and gas density at the cloud face n(H+) for a central starburst or active galactic nucleus (AGN). We compare these models carried out with the Cloudy spectral synthesis code to trends in line-to-total far-infrared luminosity ratios, far-infrared fine-structure line ratios, IRAS colors, and OH and H2O column densities found in the well-studied sample of 10 nearby galaxies from the IRAS Bright Galaxy Sample with infrared luminosities greater than 10(10) L-circle dot and IRAS 60 mu m fluxes equal to or greater than that of the nearby ultraluminous infrared galaxy (ULIRG) Arp 220. We find that the spectral sequence extending from normal starburst-type emission-line-dominated spectra to ULIRG-type absorption-dominated spectra with significant absorption from excited levels can be best explained by simultaneously increasing the hydrogen column density, from as low as 10(21) cm(-2) to as high as 10(24.8) cm(-2) or greater, and the ionization parameter, from as low as 10(-4) to as high as 1. The starburst models best reproduce most of the sequence, while AGN models are somewhat better able to produce the high OH and H2O column densities in Arp 220. Our results suggest that the molecular interstellar medium in ULIRG-like, molecular-absorption-dominated systems is located close to and at least partially obscures the source of power throughout much of the far-infrared, which must be taken into account in order to properly interpret diagnostics of both their sources of power and of feedback.
C1 [Fischer, Jacqueline; Dudley, C. C.] US Navy, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Abel, N. P.] Univ Cincinnati, Clermont Coll, MCGP Dept, Batavia, OH 45103 USA.
[Gonzalez-Alfonso, E.] Univ Alcala De Henares, Dept Fis & Matemat, E-28871 Alcala De Henares, Madrid, Spain.
[Satyapal, S.] George Mason Univ, Sch Phys Astron & Computat Sci, MS 3F3, Fairfax, VA 22030 USA.
[van Hoof, P. A. M.] Royal Observ Belgium, B-1180 Brussels, Belgium.
RP Fischer, J (reprint author), US Navy, Res Lab, Remote Sensing Div, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM jackie.fischer@nrl.navy.mil
OI van Hoof, Peter/0000-0001-7490-0739; Fischer,
Jacqueline/0000-0001-6697-7808
FU Office of Naval Research; Spanish Ministerio de Economia y
Competitividad [AYA2010-21697-C05-0, FIS2012-39162-C06-01]; NASA ADAP
program [NNX07AH49G]; Belgian Science Policy Office through the ESX
PRODEX program
FX We thank Gary Ferland and the rest of the Cloudy group for useful
discussions related to this work. Basic research in infrared astronomy
at the Naval Research Laboratory is funded by the Office of Naval
Research. E.G.-A. is a Research Associate at the Harvard-Smithsonian
Center for Astrophysics and thanks the Spanish Ministerio de Economia y
Competitividad for support under projects AYA2010-21697-C05-0 and
FIS2012-39162-C06-01. J.F. and E.G.-A. acknowledge support from NASA
ADAP program NNX07AH49G. P.v.H. acknowledges support from the Belgian
Science Policy Office through the ESX PRODEX program.
NR 71
TC 7
Z9 7
U1 0
U2 1
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 NOV 10
PY 2014
VL 795
IS 2
AR 117
DI 10.1088/0004-637X/795/2/117
PG 24
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AR8YT
UT WOS:000343857900016
ER
PT J
AU Marelli, M
Harding, A
Pizzocaro, D
De Luca, A
Wood, KS
Caraveo, P
Salvetti, D
Parkinson, PMS
Acero, F
AF Marelli, M.
Harding, A.
Pizzocaro, D.
De Luca, A.
Wood, K. S.
Caraveo, P.
Salvetti, D.
Parkinson, P. M. Saz
Acero, F.
TI ON THE PUZZLING HIGH-ENERGY PULSATIONS OF THE ENERGETIC RADIO-QUIET
gamma-RAY PULSAR J1813-1246
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE gamma rays: stars; pulsars: general; pulsars: individual (PSR
J1813-1246); stars: neutron; X-rays: stars
ID BLIND FREQUENCY SEARCHES; ALL-SKY SURVEY; X-RAY; XMM-NEWTON; CURVATURE
RADIATION; LIKELIHOOD RATIO; MAGNETIC-FIELD; NEUTRON-STARS; WIND
NEBULAE; LIGHT CURVES
AB We have analyzed the new deep XMM-Newton and Chandra observations of the energetic, radio-quiet pulsar J1813-1246. The X-ray spectrum is nonthermal, very hard, and absorbed. Based on spectral considerations, we propose that J1813 is located at a distance further than 2.5 kpc. J1813 is highly pulsed in the X-ray domain, with a light curve characterized by two sharp, asymmetrical peaks, separated by 0.5 in phase. We detected no significant X-ray spectral changes during the pulsar phase. We extended the available Fermi ephemeris to five years. We found two glitches. The gamma-ray light curve is characterized by two peaks, separated by 0.5 in phase, with a bridge in between and no off-pulse emission. The spectrum shows clear evolution in phase, being softer at the peaks and hardening toward the bridge. Surprisingly, both X-ray peaks lag behind the gamma-ray ones by a quarter of phase. We found a hint of detection in the 30-500 keV band with INTEGRAL, which is consistent with the extrapolation of both the soft X-ray and gamma-ray emission of J1813. The unique X-ray and gamma-ray phasing suggests a singular emission geometry. We discuss some possibilities within the current pulsar emission models. Finally, we develop an alternative geometrical model where the X-ray emission comes from polar cap pair cascades.
C1 [Marelli, M.; Pizzocaro, D.; De Luca, A.; Caraveo, P.; Salvetti, D.] Ist Astrofis Spaziale Fis Cosm Milano, INAF, I-20133 Milan, Italy.
[Harding, A.] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA.
[Pizzocaro, D.] Univ Insubria, I-21100 Varese, Italy.
[De Luca, A.; Caraveo, P.] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy.
[Wood, K. S.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Parkinson, P. M. Saz] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China.
[Parkinson, P. M. Saz] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Acero, F.] Univ Paris Diderot, CEA Saclay, CEA IRFU CNRS, Serv Astrophys,Lab AIM, F-91191 Gif Sur Yvette, France.
RP Marelli, M (reprint author), Ist Astrofis Spaziale Fis Cosm Milano, INAF, Via E Bassini 15, I-20133 Milan, Italy.
EM marelli@lambrate.inaf.it
OI Caraveo, Patrizia/0000-0003-2478-8018; Marelli,
Martino/0000-0002-8017-0338
FU NASA in the United States; DOE in the United States; CEA/Irfu in France;
IN2P3/CNRS in France; ASI in Italy; INFN in Italy; MEXT in Japan; KEK in
Japan; JAXA in Japan; K.A. Wallenberg Foundation; Swedish Research
Council; National Space Board in Sweden; INAF in Italy; CNES in France;
National Aeronautics and Space Administration through Chandra X-ray
Observatory Center [GO3-14053X]; National Aeronautics Space
Administration [NAS8-03060]; ASI-INAF [I/037/12/0, art.22 L.240/2010];
SWIFT [ASI-INAF I-004-11-0]; Fermi [ASI-INAF I-005-12-0]
FX We warmly thank Paizis Adamantia, Andrea Giuliani, Fabio Gastaldelli,
and Andrea Belfiore for discussions and help. We also thank Massimiliano
Razzano and Marianne Lemoine-Goumard for their good work as Galactic
Coordinators. The Fermi LAT Collaboration acknowledges support from a
number of agencies and institutes for both development and the operation
of the LAT as well as scientific data analysis. These include NASA and
DOE in the United States, CEA/Irfu and IN2P3/CNRS in France, ASI and
INFN in Italy, MEXT, KEK, and JAXA in Japan, and the K.A. Wallenberg
Foundation, the Swedish Research Council, and the National Space Board
in Sweden. Additional support from INAF in Italy and CNES in France for
science analysis during the operations phase is also gratefully
acknowledged. Support for this work was provided by the National
Aeronautics and Space Administration through Chandra Award Number
GO3-14053X issued by the Chandra X-ray Observatory Center, which is
operated by the Smithsonian Astrophysical Observatory for and on behalf
of the National Aeronautics Space Administration under contract
NAS8-03060. This work was supported by the ASI-INAF contract I/037/12/0,
art.22 L.240/2010 for the project "Calibrazione ed Analisi del satallite
NuSTAR". This work was partially supported by the SWIFT contract
ASI-INAF I-004-11-0 and the Fermi contract ASI-INAF I-005-12-0.
NR 70
TC 5
Z9 5
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 NOV 10
PY 2014
VL 795
IS 2
AR 168
DI 10.1088/0004-637X/795/2/168
PG 13
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AR8YT
UT WOS:000343857900067
ER
PT J
AU Edwankar, RV
Edwankar, CR
Deschamps, JR
Cook, JM
AF Edwankar, Rahul V.
Edwankar, Chitra R.
Deschamps, Jeffrey R.
Cook, James M.
TI General Strategy for Synthesis of C-19 Methyl-Substituted
Sarpagine/Macroline/Ajmaline Indole Alkaloids Including Total Synthesis
of 19(S),20(R)-Dihydroperaksine, 19(S),20(R)-Dihydroperaksine-17-al, and
Peraksine
SO JOURNAL OF ORGANIC CHEMISTRY
LA English
DT Article
ID ENANTIOSPECIFIC TOTAL-SYNTHESIS; ASYMMETRIC TRANSFER HYDROGENATION;
ALPHA,BETA-ACETYLENIC KETONES; PROPARGYLIC ALCOHOLS; REGIOSELECTIVE
HYDROSTANNATIONS; ENANTIOSELECTIVE REDUCTION; STEREOSELECTIVE-SYNTHESIS;
SELECTIVE REDUCTIONS; MONOTERPENOID INDOLE; EFFICIENT CATALYST
AB A detailed account of the development of a general strategy for synthesis of the C-19 methyl-substituted alkaloids including total synthesis of 19(S),20(R)-dihydroperaksine-17-al (1), 19(S),20(R)-dihydroperaksine (2), and peraksine (6) is presented. Efforts directed toward the total synthesis of macrosalhine chloride (5) are also reported. Important to success is the sequence of chemical reactions which include a critical haloboration reaction, regioselective hydroboration, and controlled oxidation (to provide sensitive enolizable aldehydes at C-20). In addition, the all-important Pd-catalyzed ?-vinylation reaction has been extended to a chiral C-19 alkyl-substituted substrate for the first time. Synthesis of the advanced intermediate 64 completes an improved formal total synthesis of talcarpine (26) and provides a starting point for synthesis of macroline-related alkaloids 2731. Similarly, extension of this synthetic strategy in the ring A oxygenated series should provide easy access to the northern hemisphere 32b of the bisindoles angustricraline, alstocraline, and foliacraline (Figure 4).
C1 [Edwankar, Rahul V.; Edwankar, Chitra R.; Cook, James M.] Univ Wisconsin, Dept Chem & Biochem, Milwaukee, WI 53201 USA.
[Deschamps, Jeffrey R.] Naval Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
RP Cook, JM (reprint author), Univ Wisconsin, Dept Chem & Biochem, Milwaukee, WI 53201 USA.
EM capncook@uwm.edu
FU NIH [MH-046851]; Lynde and Harry Bradley Foundation; NIDA-NRL
Interagency Agreement [Y1-DA1101]
FX We acknowledge the NIH, MH-046851 (in part), and the Lynde and Harry
Bradley Foundation for support of this work. X-ray crystallographic
studies were supported by NIDA-NRL Interagency Agreement Number
Y1-DA1101. We thank Professor Joachim Stockigt for kindly providing
authentic samples of 19(S),20(R)-dihydroperaksine-17-al (1) and
19(S),20(R)-dihydroperaksine (2) for TLC comparison.
NR 87
TC 6
Z9 6
U1 1
U2 27
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0022-3263
J9 J ORG CHEM
JI J. Org. Chem.
PD NOV 7
PY 2014
VL 79
IS 21
BP 10030
EP 10048
DI 10.1021/jo5016163
PG 19
WC Chemistry, Organic
SC Chemistry
GA AT0PR
UT WOS:000344638200012
PM 25247616
ER
PT J
AU Hite, JK
Gaddipati, P
Meyer, DJ
Mastro, MA
Eddy, CR
AF Hite, J. K.
Gaddipati, P.
Meyer, D. J.
Mastro, M. A.
Eddy, C. R., Jr.
TI Correlation of threading screw dislocation density to GaN 2-DEG mobility
SO ELECTRONICS LETTERS
LA English
DT Article
DE microwave oscillators; LC circuits; low-voltage quadrature LC
oscillator; quadrature inductor-capacitor oscillator; phase ambiguity
problem; figure-of-merit; FoM; start-up performance; frequency 5 GHz
AB A direct correlation between local threading screw dislocation densities in an aluminium gallium nitride/gallium nitride (AlGaN/GaN) heterostructure and the mobility of electrons in the two-dimensional electron gas (2-DEG) formed at the interface of that heterostructure is presented. Threading screw dislocations are directly imaged through open areas of Hall-effect test structures using electron channelling contrast imaging. The dislocation density measured for a given test structure is correlated to the mobility of the same structure. The results show a direct, negative correlation between mobility and screw/mixed dislocation density.
C1 [Hite, J. K.; Meyer, D. J.; Mastro, M. A.; Eddy, C. R., Jr.] US Naval Res Lab, Washington, DC 20375 USA.
[Gaddipati, P.] Amer Soc Engn Educ, Sci & Engn Apprenticeship Program, Washington, DC 20036 USA.
RP Hite, JK (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM jennifer.hite@nrl.navy.mil
RI Hite, Jennifer/L-5637-2015
OI Hite, Jennifer/0000-0002-4090-0826
FU Office of Naval Research; American Society for Engineering Education
under the Science and Engineering Apprenticeship Program; NRL Institute
for Nanoscience
FX Work at the U.S. Naval Research Laboratory is supported by the Office of
Naval Research. P. Gaddipati thanks the American Society for Engineering
Education for support under the Science and Engineering Apprenticeship
Program. The authors thank the NRL Institute for Nanoscience and staff
for equipment use and support.
NR 4
TC 3
Z9 3
U1 0
U2 19
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 0013-5194
EI 1350-911X
J9 ELECTRON LETT
JI Electron. Lett.
PD NOV 6
PY 2014
VL 50
IS 23
BP 1722
EP 1723
DI 10.1049/el.2014.2401
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA AT4WN
UT WOS:000344942600040
ER
PT J
AU Kim, YC
Bhattacharya, A
Mittal, J
AF Kim, Young C.
Bhattacharya, Apratim
Mittal, Jeetain
TI Macromolecular Crowding Effects on Coupled Folding and Binding
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID PROTEIN-PROTEIN INTERACTIONS; INTRINSICALLY DISORDERED PROTEIN;
NATIVE-STATE STABILITY; IN-VIVO; GLOBULAR-PROTEINS; ESCHERICHIA-COLI;
UNFOLDED PROTEIN; VOLUME EXCLUSION; EXCLUDED-VOLUME; CONSEQUENCES
AB Replica exchange molecular dynamics simulations are performed on the protein complex pKID-KIX to understand the effects of macromolecular crowding on coupled folding and binding events. A structure-based protein model at the residue level is adopted for the two proteins to include intramolecular conformational flexibility, while crowding macromolecules are represented as spherical particles. The interactions between crowders and protein residues can be either purely repulsive or a combination of short-range repulsion and intermediate-range attraction. Consistent with previous studies on rigid-body protein binding in the presence of spherical crowders, we find that the complex formation is stabilized by repulsive protein-crowder interactions and destabilized by sufficiently strong attractive protein-crowder interactions. Competition between stabilizing repulsive and destabilizing attractive interactions is quantitatively captured by a previous theoretical model developed for describing the change in the binding free energy of rigid proteins in a crowded environment. We find that protein flexibility has little effect on the thermodynamics of the pKID-KIX binding (with respect to bulk) for repulsive and weakly attractive protein-crowder interactions. For strong protein-crowder attractive interactions, the destabilizing effect due to crowding is attenuated by protein flexibility. Interestingly, the mechanism of coupled folding and binding observed in bulk remains unchanged under highly crowded conditions over a broad range of protein-crowder interaction strengths. Also, strong protein-crowder attractive interactions can significantly stabilize intermediate states involving partial contact between pKID and KIX domains.
C1 [Kim, Young C.] Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
[Bhattacharya, Apratim; Mittal, Jeetain] Lehigh Univ, Dept Chem & Biomol Engn, Bethlehem, PA 18015 USA.
RP Kim, YC (reprint author), Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
EM youngchan.kim@nrl.navy.mil; jeetain@lehigh.edu
FU National Science Foundation [TG-MCB-120014]
FX We thank Prof. Javier Buceta (Lehigh University) for helpful
discussions. Use of the high-performance computing capabilities of the
Extreme Science and Engineering Discovery Environment (XSEDE), which is
supported by the National Science Foundation grant TG-MCB-120014, is
gratefully acknowledged.
NR 54
TC 7
Z9 7
U1 0
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 6
PY 2014
VL 118
IS 44
BP 12621
EP 12629
DI 10.1021/jp508046y
PG 9
WC Chemistry, Physical
SC Chemistry
GA AS9RS
UT WOS:000344579900005
PM 25302571
ER
PT J
AU McCreary, KM
Hanbicki, AT
Robinson, JT
Cobas, E
Culbertson, JC
Friedman, AL
Jernigan, GG
Jonker, BT
AF McCreary, Kathleen M.
Hanbicki, Aubrey T.
Robinson, Jeremy T.
Cobas, Enrique
Culbertson, James C.
Friedman, Adam L.
Jernigan, Glenn G.
Jonker, Berend T.
TI Large-Area Synthesis of Continuous and Uniform MoS2 Monolayer Films on
Graphene
SO ADVANCED FUNCTIONAL MATERIALS
LA English
DT Article
ID CHEMICAL-VAPOR-DEPOSITION; HEXAGONAL BORON-NITRIDE; LAYER MOS2; ATOMIC
LAYERS; PHASE GROWTH; HETEROSTRUCTURES; DICHALCOGENIDES; TRANSPARENT;
EXFOLIATION; TRANSISTORS
AB Heterostructures composed of multiple layers of different atomically thin materials are of interest due to their unique properties and potential for new device functionality. MoS2-graphene heterostructures have shown promise as photodetectors and vertical tunnel transistors. However, progress is limited by the typically micrometer-scale devices and by the multiple alignments required for fabrication when utilizing mechanically exfoliated material. Here, the synthesis of large-area, continuous, and uniform MoS2 monolayers directly on graphene by chemical vapor deposition is reported, resulting in heterostructure samples on the centimeter scale with the possibility for even larger lateral dimensions. Atomic force microscopy, photoluminescence, X-ray photoelectron, and Raman spectroscopies demonstrate uniform single-layer growth of stoichiometric MoS2. The ability to reproducibly generate large-area heterostructures is highly advantageous for both fundamental investigations and technological applications.
C1 [McCreary, Kathleen M.; Hanbicki, Aubrey T.; Robinson, Jeremy T.; Cobas, Enrique; Culbertson, James C.; Friedman, Adam L.; Jernigan, Glenn G.; 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.ctr@nrl.navy.mil; berry.jonker@nrl.navy.mil
RI Friedman, Adam/D-9610-2011
OI Friedman, Adam/0000-0003-0597-5432
FU Naval Research Laboratory (NRL); National Research Council Research
Associateship Award at NRL
FX This work was supported by programs at core programs at the Naval
Research Laboratory (NRL). 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. K. M. M. synthesized the MoS2- graphene samples;
J.T.R. provided CVD graphene substrates; K. M. M., A. T. H., and J.C.C.,
and G.G.J. performed optical and chemical analysis. K. M. M. and B.T.J.
wrote the manuscript. All authors contributed to the interpretation of
the data and editing of the manuscript.
NR 44
TC 35
Z9 35
U1 16
U2 233
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1616-301X
EI 1616-3028
J9 ADV FUNCT MATER
JI Adv. Funct. Mater.
PD NOV 5
PY 2014
VL 24
IS 41
BP 6449
EP 6454
DI 10.1002/adfm.201401511
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA AS9ZA
UT WOS:000344595600005
ER
PT J
AU Tsai, HC
Elsberry, RL
AF Tsai, Hsiao-Chung
Elsberry, Russell L.
TI Improved Tropical Cyclone Intensity and Intensity Spread Prediction in
Bifurcation Situations
SO ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES
LA English
DT Article
DE Tropical cyclone intensity forecasts; tropical cyclone intensity spread
prediction; intensity forecast uncertainty; intensity bifurcation
situations
ID WESTERN NORTH PACIFIC; DEPENDENT INTENSITY; GUIDANCE
AB Bifurcation or bi-modal tropical cyclone intensity forecasts may arise due to uncertainty in the timing of formation, timing and magnitude of rapid intensification periods, or track forecast uncertainty leading to landfall or non-landfall or leading to interaction with warm-or cold-ocean eddies. An objective technique is developed and tested to detect these intensity bifurcation situations in our weighted-analog intensity (WANI) forecasts that are based on the 10 best historical analogs to the Joint Typhoon Warning Center (JTWC) official track forecasts. About 19% of the overall sample of 1136 WANI forecasts in the western North Pacific during the 2010-2012 seasons met the criteria for a substantial intensity bifurcation situation. Using a hierarchical clustering technique, two clusters of the 10 best analogs are defined and separate WANI forecasts and intensity spreads are calculated for the two clusters. If an always perfect selection of the correct cluster WANI forecast of each bifurcation situation is made, a substantial improvement in the intensity mean absolute errors is achieved relative to the original WANI forecasts based on all 10 of the best analogs. These perfect-cluster selection WANI forecasts have smaller bias errors and are more highly correlated with the verifying intensities at all forecast intervals through 120 h. Without further bias correction and calibration, the cluster WANI intensity spreads are under-determined as the Probability of Detections are smaller than the desired 68%. Four examples of WANI cluster predictions of intensity bifurcation situations are provided to illustrate how a correct choice of the intensity forecast and the intensity spread can be the basis for improved warnings of the threat from western North Pacific tropical cyclones.
C1 [Tsai, Hsiao-Chung; Elsberry, Russell L.] Naval Postgrad Sch, Dept Meteorol, Monterey, CA USA.
[Tsai, Hsiao-Chung] Tamkang Univ, Dept Water Resources & Environm Engn, New Taipei City, Taiwan.
[Elsberry, Russell L.] Univ Colorado, Hazards Ctr, Trauma, Hlth, Colorado Springs, CO 80919 USA.
RP Elsberry, RL (reprint author), Univ Colorado, Hazards Ctr, Trauma, Hlth, Colorado Springs, CO 80919 USA.
EM elsberrylr@comcast.net
FU Office of Naval Research Marine Meteorology section
FX Dr. H.-C. Tsai is a National Research Council post-doc at the Naval
Postgraduate School. He and Professor R. L. Elsberry are supported by
the Office of Naval Research Marine Meteorology section. Mrs. Penny
Jones provided excellent assistance in the manuscript preparation.
NR 6
TC 0
Z9 0
U1 0
U2 3
PU KOREAN METEOROLOGICAL SOC
PI SEOUL
PA SHINKIL-DONG 508, SIWON BLDG 704, YONGDUNGPO-GU, SEOUL, 150-050, SOUTH
KOREA
SN 1976-7633
EI 1976-7951
J9 ASIA-PAC J ATMOS SCI
JI Asia-Pac. J. Atmos. Sci.
PD NOV
PY 2014
VL 50
IS 1
SU S
BP 117
EP 128
DI 10.1007/s13143-014-0054-1
PG 12
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA CQ7TM
UT WOS:000360807400010
ER
PT J
AU Gallagher, CM
More, K
Masaquel, AS
Kamath, T
Guerin, A
Ionescu-Ittu, R
Gauthier-Loiselle, M
Nitulescu, R
Sicignano, N
Barnett, B
Wu, EQ
AF Gallagher, C. M.
More, K.
Masaquel, A. S.
Kamath, T.
Guerin, A.
Ionescu-Ittu, R.
Gauthier-Loiselle, M.
Nitulescu, R.
Sicignano, N.
Barnett, B.
Wu, E. Q.
TI OVERALL SURVIVAL IN PATIENTS WITH HER2+EARLY STAGE BREAST CANCER
PATIENTS TREATED WITH TRASTUZUMAB IN THE US DEPARTMENT OF DEFENSE
PRACTICE SETTING
SO VALUE IN HEALTH
LA English
DT Meeting Abstract
C1 [Gallagher, C. M.] Walter Reed Natl Mil Med Ctr, Bethesda, MD USA.
[More, K.] Naval Med Ctr Portsmouth, Portsmouth, VA USA.
[Masaquel, A. S.; Kamath, T.; Barnett, B.] Genentech Inc, San Francisco, CA 94080 USA.
[Guerin, A.; Ionescu-Ittu, R.; Gauthier-Loiselle, M.; Nitulescu, R.] Anal Grp Inc, Montreal, PQ, Canada.
[Sicignano, N.] Hlth ResearchTx, Trevose, VA USA.
[Wu, E. Q.] Anal Grp Inc, Boston, MA USA.
NR 0
TC 0
Z9 0
U1 0
U2 3
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1098-3015
EI 1524-4733
J9 VALUE HEALTH
JI Value Health
PD NOV
PY 2014
VL 17
IS 7
MA PCN6
BP A615
EP A615
PG 1
WC Economics; Health Care Sciences & Services; Health Policy & Services
SC Business & Economics; Health Care Sciences & Services
GA AX4QT
UT WOS:000346917302204
PM 27202155
ER
PT J
AU Kus, MS
Juliano, ML
AF Kus, Martin S.
Juliano, Michael L.
TI Do All Women With Indeterminate Pregnancies Need a Formal Ultrasound
Before Discharge From the Emergency Department?
SO MILITARY MEDICINE
LA English
DT Article
ID ECTOPIC PREGNANCY; PELVIC ULTRASOUND; INTRAUTERINE
AB Objective: The identification of ectopic pregnancy is the primary concern for pregnant patients with an indeterminate ultrasound (an empty uterus or gestational sac). The absence of free fluid and adnexal masses by ultrasound combined with the absence of ectopic risk factors are used to place women in a "low-risk" category. We believe that women in a "low-risk" category with a beta-human chorionic gonadotropin (beta-hCG) below 3,000 mIU/mL can be discharged with only an emergency department (ED) ultrasound, provided there is 48 to 72 hours obstetric follow-up. Methods: Follow-up encounters from August 2010 to March 2011 were reviewed. The inclusion criteria were women who only received an ED performed indeterminate ultrasound and an acute follow-up appointment with concern for ectopic pregnancy. Results: Forty-nine women met inclusion criteria. Twenty-nine women (59.2%, 95% CI: 45.4%-73%) had a spontaneous abortion; 18 women (36.7%, 95% CI: 23.2%-50.2%) had a normal pregnancy, and 2 women (4.1%, 95% CI: 1.5%-9.7%) had an ectopic pregnancy. Both ectopic pregnancies had no risk factors with beta-hCG values of 96 and 197 mIU/mL. Conclusion: This study suggests that low-risk indeterminate pregnancies by an ED ultrasound and beta-hCG level <3,000 mIU/mL can be safely discharged without formal ultrasonography provided a 48 to 72 hours follow-up with an obstetrician.
C1 [Kus, Martin S.] Submarine Squadron SIX, Dept Med, Norfolk, VA 23511 USA.
[Juliano, Michael L.] Naval Med Ctr Portsmouth, Dept Emergency Med, Portsmouth, VA 23708 USA.
RP Kus, MS (reprint author), Submarine Squadron SIX, Dept Med, 9168 Second St,Suite 202, Norfolk, VA 23511 USA.
NR 20
TC 2
Z9 2
U1 0
U2 2
PU ASSOC MILITARY SURG US
PI BETHESDA
PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 USA
SN 0026-4075
EI 1930-613X
J9 MIL MED
JI Milit. Med.
PD NOV
PY 2014
VL 179
IS 11
BP 1263
EP 1265
DI 10.7205/MILMED-D-14-00049
PG 3
WC Medicine, General & Internal
SC General & Internal Medicine
GA CA7LK
UT WOS:000349098600021
PM 25373052
ER
PT J
AU Michaud, A
Rothert, J
AF Michaud, Amanda
Rothert, Jacek
TI Optimal borrowing constraints and growth in a small open economy
SO JOURNAL OF INTERNATIONAL ECONOMICS
LA English
DT Article
DE Learning-by-doing; Borrowing constraints; Chinese economy; Capital
controls
ID REAL EXCHANGE-RATE; CAPITAL CONTROLS; FLOWS; CHINA; RISK
AB Chinese high growth has been accompanied by government restrictions on international borrowing (capital controls). In this paper, we ask: are such restrictions a useful policy tool to facilitate growth? We provide a theory of borrowing constraints on households as a tool to correct a learning-by-doing externality. Borrowing constraints operate as a policy tool through two channels: (i) increasing labor supply and (ii) reallocating labor towards traded goods. We find that welfare gains are closest to that of the First-Best Planner allocation when the externality is not too large. We compute the sequence of optimal constraints along the growth path and show how the use of this policy tool contributes to repressed wages, current account balance, and slow real exchange rate appreciation. Published by Elsevier B.V.
C1 [Michaud, Amanda] Indiana Univ, Bloomington, IN 47405 USA.
[Rothert, Jacek] US Naval Acad, Annapolis, MD 21402 USA.
RP Rothert, J (reprint author), US Naval Acad, Dept Econ, 589 McNair Rd, Annapolis, MD 21402 USA.
EM jacek.rothert@gmail.com
NR 41
TC 3
Z9 3
U1 2
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-1996
EI 1873-0353
J9 J INT ECON
JI J. Int. Econ.
PD NOV
PY 2014
VL 94
IS 2
BP 326
EP 340
DI 10.1016/j.jinteco.2014.07.001
PG 15
WC Economics
SC Business & Economics
GA AY5CY
UT WOS:000347592000011
ER
PT J
AU Tedesso, TW
Calusdian, J
Sewing, C
Pace, PE
AF Tedesso, Thomas W.
Calusdian, James
Sewing, Carsten
Pace, Phillip E.
TI Wideband direction finding using a photonic robust symmetrical number
system technique
SO OPTICAL ENGINEERING
LA English
DT Article
DE photonics; Mach-Zehnder modulator; direction finding; robust symmetrical
number system; electronic warfare
ID VECTOR NEURAL-NETWORK; TO-DIGITAL CONVERTER; ANGLE-OF-ARRIVAL; EMITTER
IDENTIFICATION; MICROWAVE PHOTONICS; DYNAMIC-RANGE; SIGNALS
AB Dual electrode Mach-Zehnder modulators (DE-MZMs) are used to conduct phase detection for direct wideband direction finding (DF) of microwave signals. It is demonstrated theoretically and through simulation and experimentation that the normalized magnitude of the output signal phase detector circuit is equal to |sin(psi/2)|, where psi is the phase difference between the plane waves arriving at the reference and measurement antennas of a linear DF array. A four-element wideband photonic DF system with robust symmetrical number system preprocessing is presented. Simulation and experimental testing results are provided to demonstrate the theoretical concept. The results demonstrate a direct DF receiver using DE-MZMs that achieves fine angular resolution using a much smaller array size than is typically required for linear arrays employing super-resolution signal processing techniques. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
C1 [Tedesso, Thomas W.] US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA.
[Calusdian, James; Sewing, Carsten; Pace, Phillip E.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
RP Tedesso, TW (reprint author), US Naval Acad, Dept Elect & Comp Engn, 105 Maryland Ave,Mail Stop 14B, Annapolis, MD 21402 USA.
EM tedesso@usna.edu
NR 38
TC 1
Z9 1
U1 0
U2 2
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
EI 1560-2303
J9 OPT ENG
JI Opt. Eng.
PD NOV
PY 2014
VL 53
IS 11
AR 114109
DI 10.1117/1.OE.53.11.114109
PG 13
WC Optics
SC Optics
GA AY7EH
UT WOS:000347723600056
ER
PT J
AU Terray, A
Hebert, CG
Hart, SJ
AF Terray, A.
Hebert, C. G.
Hart, S. J.
TI Optical chromatographic sample separation of hydrodynamically focused
mixtures
SO BIOMICROFLUIDICS
LA English
DT Article
ID PARTICLES; FLOW; MANIPULATION
AB Optical chromatography relies on the balance between the opposing optical and fluid drag forces acting on a particle. A typical configuration involves a loosely focused laser directly counter to the flow of particle-laden fluid passing through a microfluidic device. This equilibrium depends on the intrinsic properties of the particle, including size, shape, and refractive index. As such, uniquely fine separations are possible using this technique. Here, we demonstrate how matching the diameter of a microfluidic flow channel to that of the focusing laser in concert with a unique microfluidic platform can be used as a method to fractionate closely related particles in a mixed sample. This microfluidic network allows for a monodisperse sample of both polystyrene and poly( methyl methacrylate) spheres to be injected, hydrodynamically focused, and completely separated. To test the limit of separation, a mixed polystyrene sample containing two particles varying in diameter by less than 0.5 mu m was run in the system. The analysis of the resulting separation sets the framework for continued work to perform ultra-fine separations. (C) 2014 AIP Publishing LLC.
C1 [Terray, A.; Hebert, C. G.] Naval Res Lab, Div Chem, Washington, DC 20375 USA.
[Hart, S. J.] LumaCyte, Keswick, VA 22947 USA.
RP Terray, A (reprint author), Naval Res Lab, Div Chem, Code 6112,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM terray@nrl.navy.mil
FU Office of Naval Research; Naval Research Laboratory
FX The authors would like to acknowledge the Office of Naval Research and
the Naval Research Laboratory for support of this research.
NR 25
TC 3
Z9 3
U1 1
U2 14
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1932-1058
J9 BIOMICROFLUIDICS
JI Biomicrofluidics
PD NOV
PY 2014
VL 8
IS 6
AR 064102
DI 10.1063/1.4901824
PG 8
WC Biochemical Research Methods; Biophysics; Nanoscience & Nanotechnology;
Physics, Fluids & Plasmas
SC Biochemistry & Molecular Biology; Biophysics; Science & Technology -
Other Topics; Physics
GA AX8LG
UT WOS:000347160400004
PM 25553179
ER
PT J
AU Cornuelle, B
Hansen, J
Kirtman, B
Sandgathe, S
Warren, S
AF Cornuelle, Bruce
Hansen, James
Kirtman, Benjamin
Sandgathe, Scott
Warren, Steve
TI ISSUES AND CHALLENGES WITH USING ENSEMBLE-BASED PREDICTION TO PROBE THE
WEATHER-CLIMATE INTERFACE
SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
LA English
DT Editorial Material
C1 [Cornuelle, Bruce] Scripps Inst Oceanog, La Jolla, CA USA.
[Hansen, James] Naval Res Lab, Monterey, CA USA.
[Kirtman, Benjamin] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA.
[Warren, Steve] Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA.
[Warren, Steve] NOAA, NWS, Off Sci & Technol, Silver Spring, MD USA.
RP Sandgathe, S (reprint author), Univ Washington, Appl Phys Lab, 1013 NE 40th St, Seattle, WA 98105 USA.
EM sandgathe@apl.washington.edu
NR 1
TC 0
Z9 0
U1 0
U2 3
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0003-0007
EI 1520-0477
J9 B AM METEOROL SOC
JI Bull. Amer. Meteorol. Soc.
PD NOV
PY 2014
VL 95
IS 11
BP 213
EP 215
DI 10.1175/BAMS-D-13-00235.1
PG 3
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AX9LU
UT WOS:000347225100001
ER
PT J
AU Chang, YC
Chu, PC
Centurioni, LR
Tseng, RS
AF Chang, Yu-Chia
Chu, Peter C.
Centurioni, Luca R.
Tseng, Ruo-Shan
TI Observed near-surface currents under four super typhoons
SO JOURNAL OF MARINE SYSTEMS
LA English
DT Article
DE SVP drifter; Super typhoon; Current velocity; Northwestern Pacific
Ocean; Saffir-Simpson hurricane scale
ID UPPER OCEAN RESPONSE; COAWST MODELING SYSTEM; TROPICAL CYCLONE;
MIXED-LAYER; HURRICANES KATRINA; WAVE WAKE; SEA; SIMULATIONS; EXCHANGE;
DRIFTERS
AB The upper ocean currents under four category-5 (super) typhoons [Chaba (2004), Maon (2004), Saomai (2006), and Jangmi (2008)] were studied using data from four drifters of the Surface Velocity Program (SVP) (Niiler, 2001) in the northwestern Pacific. Maximum current velocities occurring to the right of the super typhoon tracks were observed as 2.6 m s(-1) for slow-moving (2.9 m s(-1)) Maon, 2.1 m s(-1) for typical-moving Chaba (5.1 m s(-1)), 1.4 m s(-1) for fast-moving Jangmi (6.8 m s(-1)), and 1.2 m s(-1) for fast-moving Saomai (8.1 m s(-1)). Furthermore, dependence of the mixed layer current velocity under a super typhoon on its translation speed and statistical relationships between the maximum current speed and the Saffir-Simpson hurricane scale are also provided. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Chang, Yu-Chia] Natl Sun Yat Sen Univ, Dept Marine Biotechnol & Resources, Kaohsiung 80424, Taiwan.
[Chu, Peter C.] Naval Postgrad Sch, Dept Oceanog, Naval Ocean Anal & Predict Lab, Monterey, CA 93943 USA.
[Centurioni, Luca R.] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA.
[Tseng, Ruo-Shan] Natl Sun Yat Sen Univ, Dept Oceanog, Kaohsiung 80424, Taiwan.
RP Chang, YC (reprint author), 70 Lienhai Rd, Kaohsiung 80424, Taiwan.
EM ycchang@staff.nsysu.edu.tw
FU Ministry of Science and Technology of Taiwan, Republic of China [MOST
102-2611-M-110-010-MY3]; Naval Oceanographic Office [N6230612PO00123]
FX This research was completed with grants from the Ministry of Science and
Technology of Taiwan, Republic of China (MOST 102-2611-M-110-010-MY3).
Peter C. Chu was supported by the Naval Oceanographic Office
(N6230612PO00123). We are grateful for the comments of two anonymous
reviewers.
NR 50
TC 2
Z9 3
U1 5
U2 18
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0924-7963
EI 1879-1573
J9 J MARINE SYST
JI J. Mar. Syst.
PD NOV
PY 2014
VL 139
BP 311
EP 319
DI 10.1016/j.jmarsys.2014.07.011
PG 9
WC Geosciences, Multidisciplinary; Marine & Freshwater Biology;
Oceanography
SC Geology; Marine & Freshwater Biology; Oceanography
GA AX6FD
UT WOS:000347017700026
ER
PT J
AU Dasgupta, A
Clark, RW
Ouart, ND
Giuliani, JL
AF Dasgupta, Arati
Clark, Robert W.
Ouart, Nicholas D.
Giuliani, John L.
TI Cu spectroscopy from a z-pinch plasma
SO PHYSICA SCRIPTA
LA English
DT Article; Proceedings Paper
CT 11th International Colloquium on Atomic Spectra and Oscillator Strengths
for Astrophysical and Laboratory Plasmas
CY AUG 05-09, 2013
CL Mons, BELGIUM
DE spectroscopy; non-LTE modeling; z-pinch plasma
ID RADIATION; LINE; DIAGNOSTICS; TRANSPORT; EMISSION; PHYSICS; DENSE; FE
AB Recent improvements in diagnostic techniques at the Sandia Laboratories Z accelerator have facilitated the production of very detailed x-ray spectral data in the range of 1-20 keV. The high energy density plasma produced in a z-pinch is inherently in non-local thermodynamic equilibrium (NLTE). We therefore employ a NLTE collisional equilibrium model in a 1D radiation-magnetohydrodynamics code to simulate the dynamics of the pinch and to generate synthetic emission spectra. We will discuss the effects on radiation spectra and the yields of using simplifying assumptions in the atomic model and/or the radiation transport. X-ray emission from moderately high atomic number plasmas such as Fe and Cu wire array implosions often include substantial 2p-1s K-alpha radiation. In a z-pinch plasma, K-shell vacancies can be produced by e-beams, hot electrons at the tail of a Maxwellian and also by photopumping from energetic photons emitted near the pinch axis. In the Z-1975 Cu wire implosion, K-alpha lines from various ionization stages of Cu as well as from minor constituents including Ni, Fe and Cr are observed. We have calculated K-alpha production within a full simulation of a Cu implosion, including contributions from energetic electrons and photons. Photo-pumped K-alpha emission can be distinguished from that produced by e-beams; K-shell vacancies will be produced near the axis for a beam, and near the outer edge of the plasma for energetic photons. Spectroscopic modeling of these K-alpha lines as well as K- and L-shell emission from valence electrons can provide quantitative diagnostics of plasma parameters. This methodology can also be used to investigate K-alpha emission from other laboratory experiments such as EBIT and astrophysical plasmas.
C1 [Dasgupta, Arati; Ouart, Nicholas D.; Giuliani, John L.] US Navy, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Clark, Robert W.] Berkeley Res Associates Inc, Beltsville, MD 20705 USA.
RP Dasgupta, A (reprint author), US Navy, Res Lab, Div Plasma Phys, Code 6720, Washington, DC 20375 USA.
EM arati.dasgupta@nrl.navy.mil
NR 23
TC 1
Z9 1
U1 0
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0031-8949
EI 1402-4896
J9 PHYS SCRIPTA
JI Phys. Scr.
PD NOV
PY 2014
VL 89
IS 11
AR 114008
DI 10.1088/0031-8949/89/11/114008
PG 9
WC Physics, Multidisciplinary
SC Physics
GA AX0QK
UT WOS:000346656500008
ER
PT J
AU Flora, TJ
Reeder, MF
Lofthouse, A
Kraft, N
AF Flora, Thomas J.
Reeder, Mark F.
Lofthouse, Andrew
Kraft, Neal
TI Dynamic Store Release of Ice Models from a Cavity into Mach 2.9 Flow
SO JOURNAL OF AIRCRAFT
LA English
DT Article; Proceedings Paper
CT 51st AIAA Aerospace Sciences Meeting and Exhibit Including the New
Horizons Forum and Aerospace Exposition
CY JAN 06-11, 2013
CL Grapevine, TX
SP AIAA
AB An investigation was conducted into store separation from a cavity in a Mach 2.94 freestream using both experimental and computational methods. Both approaches used an open cavity with a length-to-depth ratio of 4.5, and for the sake of simplicity, release of a spherical model was analyzed. The experimental process used a piezoresistive pressure transducer to collect the time-varying content of the pressure signal, while schlieren visualization and high-speed photography capture the dynamic response of a store released from the cavity. Computationally, the OVERFLOW solver was applied with higher-order numerical methods, Chimera grids, and the delayed detached-eddy simulation/ shear-stress transport hybrid turbulence model. Tests were performed in a blow downtunnel exhausting to a vacuum, which enabled robust control of the total pressure, and computational conditions were selected to match the experiment. The studies demonstrated that the shock wave formed on the bottom surface of the sphere led to the loss of vertical momentum for the sphere and, subsequently, its ascent back into the cavity for all but the lowest stagnation pressure conditions. Vortex-generating spoiler devices and an Mk-82 ice model were also experimentally tested to determine their effect, and the spoiler increased the vertical displacement of the store during separation, as expected.
C1 [Flora, Thomas J.] US Air Force Inst Technol, Naval Air Syst Command, Wright Patterson AFB, OH 45433 USA.
[Reeder, Mark F.] US Air Force Inst Technol, Dept Aeronaut & Astronaut, Wright Patterson AFB, OH 45433 USA.
[Lofthouse, Andrew] US Air Force Acad, Modeling & Simulat Res Ctr, Colorado Springs, CO 80840 USA.
[Kraft, Neal] US Naval Acad, Annapolis, MD 21402 USA.
RP Flora, TJ (reprint author), NAVAIR, New Delhi, India.
NR 21
TC 1
Z9 4
U1 0
U2 1
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0021-8669
EI 1533-3868
J9 J AIRCRAFT
JI J. Aircr.
PD NOV-DEC
PY 2014
VL 51
IS 6
BP 1927
EP 1941
DI 10.2514/1.C032459
PG 15
WC Engineering, Aerospace
SC Engineering
GA AW0KJ
UT WOS:000345980800021
ER
PT J
AU Pique, A
Kim, H
AF Pique, Alberto
Kim, Heungsoo
TI Laser-Induced Forward Transfer of Functional Materials: Advances and
Future Directions
SO JOURNAL OF LASER MICRO NANOENGINEERING
LA English
DT Article
DE laser induced forward transfer; LIFT; laser direct-write; laser
printing; printed electronics; nanoinks
ID METAL-DEPOSITION; DIRECT-WRITE; INTERCONNECTS; LAYER
AB Laser direct-write (LDW) techniques based on laser-induced forward transfer (LIFT) of functional materials offer unique advantages and capabilities for the rapid prototyping of electronic, optical and sensor elements as opposed to other digital printing processes like inkjet. LIFT processes have been applied to the fabrication of a wide variety of microelectronic elements such as interconnects, passive components, antennas, sensors, power sources and embedded circuits. Overall, LDW techniques are highly adaptable digital microfabrication processes in terms of materials versatility, substrate compatibility and range of writing speed, scale and resolution. This article will describe the unique advantages and capabilities of LIFT-based processes when used in conjunction with fluids and nanopastes, discuss their applications and consider their future for printing electronics.
C1 [Pique, Alberto; Kim, Heungsoo] Naval Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
RP Pique, A (reprint author), Naval Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
EM pique@nrl.navy.mil
FU Office of Naval Research (ONR) through the Naval Research Laboratory
Basic Research Program
FX This work was funded by the Office of Naval Research (ONR) through the
Naval Research Laboratory Basic Research Program. The authors would like
to thank Dr. Guido Hennig of DI Projekt AG, for providing valuable
details on the Lasersonic (R) process.
NR 22
TC 4
Z9 4
U1 2
U2 39
PU JAPAN LASER PROCESSING SOC
PI OSAKA
PA OSAKA UNIV, 11-1 MIHOGAOKA, IBARAKI C/O KATAYAMA LAB, JOINING & WELDING
RES INST, OSAKA, 567-0047, JAPAN
SN 1880-0688
J9 J LASER MICRO NANOEN
JI J. Laser Micro Nanoeng.
PD NOV
PY 2014
VL 9
IS 3
BP 192
EP 197
DI 10.2961/jlmn.2014.03.0002
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Optics; Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Optics; Physics
GA AW3KD
UT WOS:000346184500002
ER
PT J
AU Radojcic, DV
Morabito, MG
Simic, AP
Zgradic, AB
AF Radojcic, Dejan V.
Morabito, Michael G.
Simic, Aleksandar P.
Zgradic, Antonio B.
TI Modeling with Regression Analysis and Artificial Neural Networks the
Resistance and Trim of Series 50 Experiments with V-Bottom Motor Boats
SO JOURNAL OF SHIP PRODUCTION AND DESIGN
LA English
DT Article
DE planing craft; hard chine hulls; resistance/trim evaluation; regression
analysis; artificial neural network (ANN); Series 50
AB Mathematical representations for the resistance, trim, and wetted length of the Experimental Model Basin Series 50 have been developed using conventional regression analysis techniques as well as artificial neural networks. Series 50 is a standard series of 20 V-bottomed motor boats tested in 1941. These hulls could be representative of today's semidisplacement hulls. Recently, the series has been reanalyzed and published using contemporary planing coefficients, enabling resistance prediction in design stages. In the present study, mathematical representations are developed for the Series 50 as an alternative to using charts or data tables. Two methods are used, regression analysis and artificial neural networks. This study provides a useful resistance prediction method for designers and an opportunity to compare and contrast regression analysis and artificial neural networks applied to standard series. The main finding of the study is that both techniques were capable of developing stable and accurate models. A detailed quantification of the differences between methods is provided.
C1 [Radojcic, Dejan V.; Simic, Aleksandar P.] Univ Belgrade, Dept Naval Architecture, Fac Mech Engn, Belgrade, Serbia.
[Morabito, Michael G.] US Naval Acad, Dept Naval Architecture & Ocean Engn, Annapolis, MD 21402 USA.
[Zgradic, Antonio B.] NAVAR, Herceg Novi, Montenegro.
RP Radojcic, DV (reprint author), Univ Belgrade, Dept Naval Architecture, Fac Mech Engn, Belgrade, Serbia.
NR 20
TC 1
Z9 1
U1 0
U2 1
PU SOC NAVAL ARCHITECTS MARINE ENGINEERS
PI JERSEY CITY
PA 601 PAVONIA AVENUE, JERSEY CITY, NJ 07306 USA
SN 2158-2866
EI 2158-2874
J9 J SHIP PROD DES
JI J. Ship Prod. Des.
PD NOV
PY 2014
VL 30
IS 4
BP 153
EP 174
DI 10.5957/JSPD.30.4.140011
PG 22
WC Engineering, Marine
SC Engineering
GA AW1GC
UT WOS:000346037300001
ER
PT J
AU Judge, CQ
AF Judge, Carolyn Q.
TI Empirical Methods for Predicting Lift and Heel Moment for a Heeled
Planing Hull
SO JOURNAL OF SHIP PRODUCTION AND DESIGN
LA English
DT Article
DE planing; hydrodynamics (general); high speed craft
ID STABILITY
AB Even in calm water, high-speed vessels can display unstable behaviors such as chine walking, sudden large heel, and porpoising. Large heel angle can result in the loss of transverse stability at high forward speed. When a planing craft begins to plane, the hydrodynamic lift forces raise the hull out of the water, reducing the underwater geometry. An experimental program at the U.S. Naval Academy has been designed to investigate the transverse stability of planing hulls. An experimental mechanism to force a planing hull model in heave and roll motion was designed and built. The first model tested was a wooden prismatic planing hull model with a constant deadrise of 20 degrees, a beam of 1.48 ft (0.45 m), and a total length of 5 ft (1.52 m). The model was held at various heel and running draft positions while fixed in pitch, yaw, and sway. The tests were done at two model speeds, for one model displacement, five fixed heel angles, and five fixed running heave positions. The lift and sway forces, along with the heel moment, were measured and underwater photography was taken of the wetted surface. This article presents a set of equations based on empirical relationships for calculating the lift and heel moment for a prismatic planing hull at nonzero heel angles.
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Judge, CQ (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 13
TC 2
Z9 2
U1 0
U2 1
PU SOC NAVAL ARCHITECTS MARINE ENGINEERS
PI JERSEY CITY
PA 601 PAVONIA AVENUE, JERSEY CITY, NJ 07306 USA
SN 2158-2866
EI 2158-2874
J9 J SHIP PROD DES
JI J. Ship Prod. Des.
PD NOV
PY 2014
VL 30
IS 4
BP 175
EP 183
DI 10.5957/JSPD.30.4.130059
PG 9
WC Engineering, Marine
SC Engineering
GA AW1GC
UT WOS:000346037300002
ER
PT J
AU Huang, TD
Harbison, M
Kvidahl, L
Niolet, D
Walks, J
Stefanick, K
Phillippi, M
Dong, P
DeCan, L
Caccese, V
Blomquist, P
Kihl, D
Wong, R
Nappi, N
Gardner, J
Wong, C
Bjornson, M
Manuel, A
AF Huang, T. D.
Harbison, Michael
Kvidahl, Lee
Niolet, David
Walks, John
Stefanick, Kevin
Phillippi, Mark
Dong, Pingsha
DeCan, Larry
Caccese, Vincent
Blomquist, Paul
Kihl, David
Wong, Rick
Nappi, Natale
Gardner, James
Wong, Catherine
Bjornson, Michael
Manuel, Allen
TI Reduction of Overwelding and Distortion for Naval Surface Combatants,
Part 1: Optimized Weld Sizing for Lightweight Ship Structures
SO JOURNAL OF SHIP PRODUCTION AND DESIGN
LA English
DT Article
DE weld sizing; overwelding; shipbuilding; production; fatigue; shear;
distortion
AB As high-strength thin-steel use in ship design increases, dimensional management becomes critical to control construction costs and schedule in ship production. In the U.S. shipbuilding industry, improvements to shipbuilding facilities and processing technology have not kept pace with the rate of change in ship design. Additionally, new designs using thinner steels are subject to legacy weld-sizing criteria, which may inappropriately size welds on lightweight materials. These two factors result in widespread overwelding, causing severe plate buckling in naval vessels during construction. The problem of overwelding has two distinct sources: 1) the weld-sizing methods developed in the 1980s are still used in most shipbuilding specifications regardless of ship class. This prevents the incentive of application of latest technologies that can make strong, precision fillet welds for modern lightweight thin steel naval surface combatants; and 2) shipyard welders tend to make welds even larger than design requirements to satisfy naval production specifications, which do not allow for any undersized welds. On average, production welds are 3 mm larger than design, which can more than double the heat input and distortion caused by welding. The approach to the solution of this overwelding problem will be described in detail in this article: 1) develop appropriate weld-sizing criteria for thin plate structures; this can be facilitated by numerical modeling to ensure adequate static shear, tensile, bending, fatigue, and dynamic impact capacity of structural welds; and 2) perform a robust designed experiment to establish confidence that small weld sizes can provide necessary performance and strength to meet the design service life of the vessel and provide data to NAVSEA technical warrant holders to support the implementation of an underweld tolerance for ship production to prevent overwelding.
C1 [Stefanick, Kevin; Phillippi, Mark] Concurrent Technol Corp, Johnstown, PA USA.
[Dong, Pingsha; DeCan, Larry] Univ New Orleans, New Orleans, LA 70148 USA.
[Caccese, Vincent] Univ Maine, Orono, ME USA.
[Blomquist, Paul] Appl Thermal Sci Inc, Sanford, ME USA.
[Kihl, David; Wong, Rick] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD USA.
[Nappi, Natale; Gardner, James; Wong, Catherine; Bjornson, Michael] Naval Sea Syst Command, Washington, DC USA.
[Manuel, Allen] DDL Omni, Mclean, VA USA.
NR 11
TC 2
Z9 2
U1 3
U2 13
PU SOC NAVAL ARCHITECTS MARINE ENGINEERS
PI JERSEY CITY
PA 601 PAVONIA AVENUE, JERSEY CITY, NJ 07306 USA
SN 2158-2866
EI 2158-2874
J9 J SHIP PROD DES
JI J. Ship Prod. Des.
PD NOV
PY 2014
VL 30
IS 4
BP 184
EP 193
DI 10.5957/JSPD.30.4.130028
PG 10
WC Engineering, Marine
SC Engineering
GA AW1GC
UT WOS:000346037300003
ER
PT J
AU Fu, HL
Wang, XD
Chu, PC
Zhang, XF
Han, GJ
Li, W
AF Fu, HongLi
Wang, Xidong
Chu, Peter C.
Zhang, Xuefeng
Han, Guijun
Li, Wei
TI Tropical cyclone footprint in the ocean mixed layer observed by Argo in
the Northwest Pacific
SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
LA English
DT Article
DE mixed layer response; tropical cyclone; Argo data; barrier layer
ID SOUTH CHINA SEA; SURFACE TEMPERATURE; HEAT-TRANSPORT; BARRIER LAYER;
ENERGY INPUT; HURRICANES; VARIABILITY; INTENSITY; DEPTH; MODEL
AB This study systematically investigated the ocean mixed layer responses to tropical cyclone (TC) using available Argo profiles during the period of 1998-2011 in the northwest Pacific. Results reveal that isothermal layer (IL) deepening and isothermal layer (IL) cooling with evident rightward biases induced by strong TCs are clearer compared to the weak TCs. Likewise, the rightward biases of IL deepening and cooling induced by fast TCs are more obvious than that induced by slow TCs. The upwelling within TC's eye is much stronger for the strong (slow) TCs than weak (fast) TCs. For the strong and slow TCs, the TC-induced rainfall reduces deepening of constant density layer (with its depth called the mixed layer depth, MLD), and in turn increases the barrier layer thickness (BLT). The initial BL prior to TC can restrict IL cooling more markedly under the weak and fast TCs than under the strong and slow TCs. The inertial oscillation is stronger induced by the strong (fast) TCs than by the weak (slow) TCs. In addition, the most pronounced TC-induced mixed layer deepening and IL cooling in July to October climatology occur in the subtropical gyre of the northwest Pacific with enhanced vertical diffusivity. The maximum increase of isothermal layer depth (ILD) and MLD is up to 5 m, with IL cooling up to 0.4 degrees C.
C1 [Fu, HongLi; Wang, Xidong; Zhang, Xuefeng; Han, Guijun; Li, Wei] Natl Marine Data & Informat Serv, SOA, Key Lab Marine Environm Informat Technol, Tianjin, Peoples R China.
[Chu, Peter C.] Naval Postgrad Sch, Dept Oceanog, Naval Ocean Anal & Predict Lab, Monterey, CA USA.
RP Wang, XD (reprint author), Natl Marine Data & Informat Serv, SOA, Key Lab Marine Environm Informat Technol, Tianjin, Peoples R China.
EM xidong_wang@yahoo.com
FU National Basic Research Program of China [2013CB430304]; National
Natural Science Foundation of China [41030854, 41106005, 41176003,
41206178, 41376015]; National High-Tech R&D Program of China
[2013AA09A505]; Office of Naval Research; Naval Oceanographic Office
FX This study was supported by the National Basic Research Program of China
(2013CB430304), National Natural Science Foundation (41030854, 41106005,
41176003, 41206178, and 41376015) of China, and National High-Tech R&D
Program (2013AA09A505) of China. Peter C. Chu was supported by the
Office of Naval Research and Naval Oceanographic Office.
NR 55
TC 3
Z9 4
U1 1
U2 19
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9275
EI 2169-9291
J9 J GEOPHYS RES-OCEANS
JI J. Geophys. Res.-Oceans
PD NOV
PY 2014
VL 119
IS 11
BP 8078
EP 8092
DI 10.1002/2014JC010316
PG 15
WC Oceanography
SC Oceanography
GA AW2FG
UT WOS:000346102900041
ER
PT J
AU Jiang, XC
Hu, JS
Lieber, AM
Jackan, CS
Biffinger, JC
Fitzgerald, LA
Ringeisen, BR
Lieber, CM
AF Jiang, Xiaocheng
Hu, Jinsong
Lieber, Alexander M.
Jackan, Charles S.
Biffinger, Justin C.
Fitzgerald, Lisa A.
Ringeisen, Bradley R.
Lieber, Charles M.
TI Nanoparticle Facilitated Extracellular Electron Transfer in Microbial
Fuel Cells
SO NANO LETTERS
LA English
DT Article
DE Bacteria; facilitated electron transport; electrochemically active; iron
sulfide; shewanella
ID SHEWANELLA-ONEIDENSIS MR-1; BACTERIAL NANOWIRES; TRANSFER MECHANISMS;
REDOX ENZYMES; ELECTRICITY; SINGLE; ELECTROCHEMISTRY; MICROORGANISMS;
ENERGY; GENERATION
AB Microbial fuel cells (MFCs) have been the focus of substantial research interest due to their potential for long-term, renewable electrical power generation via the metabolism of a broad spectrum of organic substrates, although the low power densities have limited their applications to date. Here, we demonstrate the potential to improve the power extraction by exploiting biogenic inorganic nanoparticles to facilitate extracellular electron transfer in MFCs. Simultaneous short-circuit current recording and optical imaging on a nanotechnology-enabled platform showed substantial current increase from Shewanella PV-4 after the formation of cell/iron sulfide nanoparticle aggregates. Detailed characterization of the structure and composition of the cell/nanoparticle interface revealed crystalline iron sulfide nanoparticles in intimate contact with and uniformly coating the cell membrane. In addition, studies designed to address the fundamental mechanisms of charge transport in this hybrid system showed that charge transport only occurred in the presence of live Shewanella, and moreover demonstrated that the enhanced current output can be attributed to improved electron transfer at cell/electrode interface and through the cellular-networks. Our approach of interconnecting and electrically contacting bacterial cells through biogenic nanoparticles represents a unique and promising direction in MFC research and has the potential to not only advance our fundamental knowledge about electron transfer processes in these biological systems but also overcome a key limitation in MFCs by constructing an electrically connected, three-dimensional cell network from the bottom-up.
C1 [Jiang, Xiaocheng; Hu, Jinsong; Lieber, Alexander M.; Jackan, Charles S.; Lieber, Charles M.] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA.
[Lieber, Charles M.] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA.
[Hu, Jinsong] Chinese Acad Sci, Inst Chem, CAS Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China.
[Biffinger, Justin C.; Fitzgerald, Lisa A.; Ringeisen, Bradley R.] US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
RP Lieber, CM (reprint author), Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA.
EM cml@cmliris.harvard.edu
RI Hu, Jin-Song/E-1001-2011; Jiang, Xiaocheng/B-8750-2016
OI Hu, Jin-Song/0000-0002-6268-0959; Jiang, Xiaocheng/0000-0002-3455-3653
FU Air Force Office of Scientific Research; ONR/NRL Nanoscience Institute
[BLK 6.1]
FX C.M.L. and B.R.R. acknowledge support of this work by the Air Force
Office of Scientific Research and J.C.B and L.A.F. acknowledge ONR/NRL
Nanoscience Institute BLK 6.1 funding.
NR 41
TC 16
Z9 18
U1 14
U2 146
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD NOV
PY 2014
VL 14
IS 11
BP 6737
EP 6742
DI 10.1021/nl503668q
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA AU6PE
UT WOS:000345723800112
PM 25310721
ER
PT J
AU Angus, JR
Richardson, AS
Ottinger, PF
Swanekamp, SB
Schumer, JW
AF Angus, J. R.
Richardson, A. S.
Ottinger, P. F.
Swanekamp, S. B.
Schumer, J. W.
TI Nonquasineutral electron vortices in nonuniform plasmas
SO PHYSICS OF PLASMAS
LA English
DT Article
ID MAGNETIC-FIELD PENETRATION; LASER-PULSES; DYNAMICS;
MAGNETOHYDRODYNAMICS; MODEL
AB Electron vortices are observed in the numerical simulation of current carrying plasmas on fast time scales where the ion motion can be ignored. In plasmas with nonuniform density n, vortices drift in the B x del n direction with a speed that is on the order of the Hall speed. This provides a mechanism for magnetic field penetration into a plasma. Here, we consider strong vortices with rotation speeds V-phi close to the speed of light c where the vortex size delta is on the order of the magnetic Debye length lambda(B) = vertical bar B vertical bar/4 pi en and the vortex is thus nonquasineutral. Drifting vortices are typically studied using the electron magnetohydrodynamic model (EMHD), which ignores the displacement current and assumes quasineutrality. However, these assumptions are not strictly valid for drifting vortices when delta approximate to lambda(B). In this paper, 2D electron vortices in nonuniform plasmas are studied for the first time using a fully electromagnetic, collisionless fluid code. Relatively large amplitude oscillations with periods that correspond to high frequency extraordinary modes are observed in the average drift speed. The drift speed W is calculated by averaging the electron velocity field over the vorticity. Interestingly, the time-averaged W from these simulations matches very well with W from the much simpler EMHD simulations even for strong vortices with order unity charge density separation. (C) 2014 AIP Publishing LLC.
C1 [Angus, J. R.; Richardson, A. S.; Swanekamp, S. B.; Schumer, J. W.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Ottinger, P. F.] Engility Corp, Chantilly, VA 20151 USA.
RP Angus, JR (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
OI Ottinger, Paul/0000-0001-9901-7379; Angus, Justin/0000-0003-1474-0002
FU Naval Research Laboratory Karle fellowship and basic and applied
research program
FX Research supported by Naval Research Laboratory Karle fellowship and
basic and applied research program.
NR 29
TC 2
Z9 2
U1 0
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2014
VL 21
IS 11
AR 112306
DI 10.1063/1.4902101
PG 6
WC Physics, Fluids & Plasmas
SC Physics
GA AU5JZ
UT WOS:000345644200026
ER
PT J
AU Angus, JR
Krasheninnikov, SI
AF Angus, J. R.
Krasheninnikov, S. I.
TI Inviscid evolution of large amplitude filaments in a uniform gravity
field
SO PHYSICS OF PLASMAS
LA English
DT Article
ID RAYLEIGH-TAYLOR INSTABILITY; EQUATORIAL SPREAD F; 2-DIMENSIONAL BUBBLE;
GAS BUBBLE; MOTION; LIQUID; EDGE; TURBULENCE; DEVICES
AB The inviscid evolution of localized density stratifications under the influence of a uniform gravity field in a homogeneous, ambient background is studied. The fluid is assumed to be incompressible, and the stratification, or filament, is assumed to be initially isotropic and at rest. It is shown that the center of mass energy can be related to the center of mass position in a form analogous to that of a solid object in a gravity field g by introducing an effective gravity field g(eff), which is less than g due to energy that goes into the background and into non-center of mass motion of the filament. During the early stages of the evolution, geff is constant in time and can be determined from the solution of a 1D differential equation that depends on the initial, radially varying density profile of the filament. For small amplitude filaments such that rho(0) << 1, where rho(0) is the relative amplitude of the filament to the background, the early stage g(eff) scales linearly with rho(0), but as rho(0) -> infinity, g(eff) -> g and is thus independent of rho(0). Fully nonlinear simulations are performed for the evolution of Gaussian filaments, and it is found that the time t(max), which is defined as the time for the center of mass velocity to reach its maximum value U-max, occurs very soon after the constant acceleration phase and so U-max approximate to g(eff)(t = 0)t(max). The simulation results show that U-max similar to 1/t(max) similar to root rho(0) for rho(0) << 1, in agreement with theory and results from previous authors, but that U-max and t(max) both scale approximately with root rho(0) for rho(0) >> 1. The fact that U-max and t(max) have the same scaling with rho(0) for large amplitude filaments is in agreement with the theory presented in this paper. (C) 2014 AIP Publishing LLC.
C1 [Angus, J. R.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Krasheninnikov, S. I.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Krasheninnikov, S. I.] Natl Res Nucl Univ MEPhl, Moscow 115563, Russia.
RP Angus, JR (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
OI Angus, Justin/0000-0003-1474-0002
FU NRL Karle Fellowship; U.S. Department of Energy Office of Science,
Office of Fusion Energy Sciences at UCSD [DE-FG02-04ER54739]; MES of the
Russian Federation at MEPhI [14.Y26.31.008]
FX Research was supported by NRL Karle Fellowship. This material is based
upon work supported by the U.S. Department of Energy Office of Science,
Office of Fusion Energy Sciences under Award No. DE-FG02-04ER54739 at
UCSD and Grant No. 14.Y26.31.008 of the MES of the Russian Federation at
MEPhI.
NR 24
TC 5
Z9 5
U1 0
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2014
VL 21
IS 11
AR 112504
DI 10.1063/1.4901237
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA AU5JZ
UT WOS:000345644200031
ER
PT J
AU Biffinger, JC
Barlow, DE
Pirlo, RK
Babson, DM
Fitzgerald, LA
Zingarelli, S
Nadeau, LJ
Crookes-Goodson, WJ
Russell, JN
AF Biffinger, Justin C.
Barlow, Daniel E.
Pirlo, Russell K.
Babson, David M.
Fitzgerald, Lisa A.
Zingarelli, Sandra
Nadeau, Lloyd J.
Crookes-Goodson, Wendy J.
Russell, John N., Jr.
TI A direct quantitative agar-plate based assay for analysis of Pseudomonas
protegens Pf-5 degradation of polyurethane films
SO INTERNATIONAL BIODETERIORATION & BIODEGRADATION
LA English
DT Article
DE Pseudomonas biofilms; Polyurethane; Biodegradation; FTIR spectroscopy;
Citrate; Impranil
ID POLYESTER-POLYURETHANE; FLUORESCENS; CHLORORAPHIS; PRODUCTS; GROWTH;
ENZYME; BIODEGRADATION; PURIFICATION; PATHWAY; LIPASE
AB A quantitative assay was developed for the direct measurement of polymer film degradation from bacterial colonies on agar plates. Small (1 mm diameter) colonies of Pseudomonas protegens Pf-5 (formerly Pseudomonas fluorescens Pf-5) were used for this work. Interactions between the Pf-5 colonies and thin polyurethane (PU) coatings on ZnSe coupons were evaluated for degradation using infrared spectroscopy. Three different coatings were analyzed and were formed from 1) a colloidal, aqueous - based polyester PU (Impranil (R) DLN); 2) an organic solvent - based polyester PU (Irogran); and 3) an organic solvent - based polyether PU (AS-P108). Over a 24 h time period at 30 degrees C, citrate exposed Pf-5 cultures rapidly degraded Impranil coatings, consistent with analogous zone clearing assays. However, the Irogran and AS-P108 PU's, which are not directly compatible with zone clearing assays, showed no measureable degradation by the coating assay under identical conditions. These results demonstrated the capability to evaluate any variety of polymer formulation as solid films under identical biological conditions. The results also show that rapid microbial degradation of colloidal polyurethanes such as Impranil are not necessarily representative of activity towards other PU materials. Published by Elsevier Ltd.
C1 [Biffinger, Justin C.; Barlow, Daniel E.; Pirlo, Russell K.; Fitzgerald, Lisa A.; Russell, John N., Jr.] US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
[Babson, David M.] Nova Res Inc, Alexandria, VA 22308 USA.
[Zingarelli, Sandra; Nadeau, Lloyd J.; Crookes-Goodson, Wendy J.] Air Force Res Lab, Soft Matter Mat Branch, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA.
RP Barlow, DE (reprint author), US Naval Res Lab, Div Chem, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM daniel.barlow@nrl.navy.mil
FU Air Force Office of Scientific Research [12RX14COR]
FX This study was supported by the Air Force Office of Scientific Research
under award number 12RX14COR.
NR 30
TC 6
Z9 6
U1 2
U2 15
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0964-8305
EI 1879-0208
J9 INT BIODETER BIODEGR
JI Int. Biodeterior. Biodegrad.
PD NOV
PY 2014
VL 95
BP 311
EP 319
DI 10.1016/j.ibiod.2014.09.005
PN B
PG 9
WC Biotechnology & Applied Microbiology; Environmental Sciences
SC Biotechnology & Applied Microbiology; Environmental Sciences & Ecology
GA AU2SS
UT WOS:000345468500004
ER
PT J
AU Bermudez, VM
AF Bermudez, V. M.
TI Design and construction of a research atomic layer deposition system for
in situ infrared and electron spectroscopies
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 20th Topical Conference on High-Temperature Plasma Diagnostics
CY JUN 01-05, 2014
CL Atlanta, GA
ID ABSORPTION-SPECTROSCOPY; SURFACES; ADSORPTION; TRIMETHYLALUMINUM;
TIO2(110); HYDROGEN; SPECTRA; WATER; OXIDE; H2O
AB A description is given of an ultra-high vacuum surface-analysis chamber that incorporates an internal cell for performing atomic layer deposition at a pressure of up to similar to 1 Torr. The apparatus permits the growth process to be interrupted in stages during which data can be obtained using infrared and x-ray photoemission spectroscopies together with other electron-based techniques. Demonstration results are given for the adsorption of H2O on Si (100) at a pressure of similar to 0.3 Torr. The system described is generally applicable in the study of any surface reaction under non-high-vacuum conditions in which there is a need for both infrared and electron spectroscopies.
C1 Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
RP Bermudez, VM (reprint author), Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
EM bermudez@alum.mit.edu
FU Office of Naval Research
FX This work was supported by the Office of Naval Research. E. S. Snow is
thanked for providing the impetus for undertaking this work, and T. L.
Reinecke is gratefully acknowledged for obtaining the necessary funding.
Helpful discussions on the initial design were provided by E. R.
Cleveland and G. W. Rubloff, and T. J. Larrabee provided valuable
assistance with some of the design and construction issues. M. A. Hines
is thanked for help regarding the removal of interference fringes from
IR transmission data and for providing the necessary software.
NR 42
TC 0
Z9 0
U1 5
U2 16
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD NOV
PY 2014
VL 85
IS 11
AR 114101
DI 10.1063/1.4900724
PG 9
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA AU5KO
UT WOS:000345646000275
PM 25430126
ER
PT J
AU Weddel, D
AF Weddel, David
TI Addressing the Navy's Need for Collaboration and Connectivity Lockheed
Martin's Maritime Test Bed
SO SEA TECHNOLOGY
LA English
DT Article
C1 [Weddel, David] Lockheed Martin, Informat Syst & Global Solut Business, Strateg Planning, Bethesda, MD USA.
[Weddel, David] US Navy, Washington, DC USA.
RP Weddel, D (reprint author), Lockheed Martin, Informat Syst & Global Solut Business, Strateg Planning, Bethesda, MD USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU COMPASS PUBLICATIONS, INC
PI ARLINGTON
PA 1501 WILSON BLVD., STE 1001, ARLINGTON, VA 22209-2403 USA
SN 0093-3651
J9 SEA TECHNOL
JI Sea Technol.
PD NOV
PY 2014
VL 55
IS 11
BP 35
EP +
PG 3
WC Engineering, Ocean
SC Engineering
GA AU3ZH
UT WOS:000345548500007
ER
PT J
AU Treude, T
Krause, S
Maltby, J
Dale, AW
Coffin, R
Hamdan, LJ
AF Treude, Tina
Krause, Stefan
Maltby, Johanna
Dale, Andrew W.
Coffin, Richard
Hamdan, Leila J.
TI Sulfate reduction and methane oxidation activity below the
sulfate-methane transition zone in Alaskan Beaufort Sea continental
margin sediments: Implications for deep sulfur cycling
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Article
ID MASSIVE BARITE DEPOSITS; OUT-COMPETE METHANOGENS; BLACK-SHALE BASINS;
ANAEROBIC OXIDATION; MARINE-SEDIMENTS; REDUCING BACTERIA;
DESULFOVIBRIO-DESULFURICANS; ELEMENTAL SULFUR; SP-NOV;
ELECTRON-ACCEPTORS
AB Two similar to 6 m long sediment cores were collected along the similar to 300 m isobath on the Alaskan Beaufort Sea continental margin. Both cores showed distinct sulfate-methane transition zones (SMTZ) at 105 and 120 cm below seafloor (cmbsf). Sulfate was not completely depleted below the SMTZ but remained between 30 and 500 mu M. Sulfate reduction and anaerobic oxidation of methane (AOM) determined by radiotracer incubations were active throughout the methanogenic zone. Although a mass balance could not explain the source of sulfate below the SMTZ, geochemical profiles and correlation network analyses of biotic and abiotic data suggest a cryptic sulfur cycle involving iron, manganese and barite. Inhibition experiments with molybdate and 2-bromoethanesulfonate (BES) indicated decoupling of sulfate reduction and AOM and competition between sulfate reducers and methanogens for substrates. While correlation network analyses predicted coupling of AOM to iron reduction, the addition of manganese or iron did not stimulate AOM. Since none of the classical archaeal anaerobic methanotrophs (ANME) were abundant, the involvement of unknown or unconventional phylotypes in AOM is conceivable. The resistance of AOM activity to inhibitors implies deviation from conventional enzymatic pathways. This work suggests that the classical redox cascade of electron acceptor utilization based on Gibbs energy yields does not always hold in diffusion-dominated systems, and instead biotic processes may be more strongly coupled to mineralogy. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Treude, Tina; Krause, Stefan; Maltby, Johanna; Dale, Andrew W.] GEOMAR Helmholtz Ctr Ocean Res Kiel, Dept Marine Biogeochem, D-24148 Kiel, Germany.
[Coffin, Richard; Hamdan, Leila J.] US Naval Res Lab, Marine Biogeochem Sect, Washington, DC 20375 USA.
RP Treude, T (reprint author), GEOMAR Helmholtz Ctr Ocean Res Kiel, Dept Marine Biogeochem, Wischhofstr 1-3, D-24148 Kiel, Germany.
EM ttreude@geomar.de
RI Dale, Andrew/B-4384-2013
FU Cluster of Excellence 'The Future Ocean' - German Research Foundation;
Office of Naval Research [33]; Department of Energy, National Energy
Technology Laboratory, Morgantown WVA; Naval Research Laboratory (NRL)
Chemistry Division Young Investigator Program; NRL platform support
program
FX We thank the captain and crew of USCGC Polar Sea and C. Verlinden, R.
Downer and L. Bryant for field assistance. We thank R. Plummer, D.
Gustafson, J. Hommer, B. Domeyer, A. Bleyer, R. Suhrberg, and the MITAS
shipboard scientific party for laboratory assistance and P. Gillevet for
insight on network analysis. R. Thauer is thanked for stimulating
discussions. We thank three reviewers for their valuable comments. TT
and SK were supported by the Cluster of Excellence 'The Future Ocean'
funded by the German Research Foundation. Geochemical work was supported
by Office of Naval Research Code 33 and Department of Energy, National
Energy Technology Laboratory, Morgantown WVA. LJH was supported by the
Naval Research Laboratory (NRL) Chemistry Division Young Investigator
Program. Ship time was funded by the NRL platform support program.
NR 98
TC 15
Z9 15
U1 3
U2 71
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
EI 1872-9533
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD NOV 1
PY 2014
VL 144
BP 217
EP 237
DI 10.1016/j.gca.2014.08.018
PG 21
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA AT4XM
UT WOS:000344945600014
ER
PT J
AU Limbert, J
AF Limbert, John
TI US foreign policy and the Iranian Revolution: the Cold War dynamics of
engagement and strategic alliance
SO INTERNATIONAL AFFAIRS
LA English
DT Book Review
C1 [Limbert, John] US Naval Acad, Annapolis, MD 21402 USA.
RP Limbert, J (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 1
TC 0
Z9 0
U1 1
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0020-5850
EI 1468-2346
J9 INT AFF
JI Int. Aff.
PD NOV
PY 2014
VL 90
IS 6
BP 1502
EP 1504
PG 3
WC International Relations
SC International Relations
GA AT2WD
UT WOS:000344794000049
ER
PT J
AU Prak, DJL
Cowart, JS
McDaniel, AM
Trulove, PC
AF Prak, Dianne J. Luning
Cowart, Jim S.
McDaniel, Andrew M.
Trulove, Paul C.
TI Density, Viscosity, Speed of Sound, Bulk Modulus, Surface Tension, and
Flash Point of Binary Mixtures of n-Hexadecane plus Ethylbenzene or plus
Toluene at (293.15 to 373.15) K and 0.1 MPa
SO JOURNAL OF CHEMICAL AND ENGINEERING DATA
LA English
DT Article
ID HYDROTREATED RENEWABLE DIESEL; C-8-C-16 NORMAL-ALKANES; THERMOPHYSICAL
PROPERTIES; SURROGATE MIXTURE; LIQUID MIXTURES; PHYSICOCHEMICAL
AUTHENTICITY; TERNARY MIXTURES; ORGANIC LIQUIDS; FUEL; HYDROCARBONS
AB In this work, the physical properties of binary mixtures of n-hexadecane with toluene or ethylbenzene were measured. Density and viscosity were measured at temperatures ranging from (293.15 to 373.15) K, and the speed of sound was measured at temperatures ranging from (293.15 to 333.15) K. Density mole fraction and temperature data were fit to a fourth-order polynomial. Viscosity mole fraction data were fit using the three-body McAllister model, while the viscosity deviations were fit to a RedlichKister type equation. For both two-component mixtures, the speed of sound at 293.15 K decreased as the mole fraction of the aromatic compound increased until a minimum was reached after which the speed of sound increased slightly to the value of the pure aromatic compound. The bulk modulus was calculated from density and speed of sound data. For both 2-component mixtures, the bulk modulus at 293.15 K decreased slightly as the mole fraction of the aromatic compound increased until a minimum was reached after which the bulk modulus increased to its highest value, which is the value for the aromatic compound. Flash points for the mixtures ranged from (278.5 to 408) K, and surface tension values ranged from (27.3 to 29.2) mN.m(-1).
C1 [Prak, Dianne J. Luning; Trulove, Paul C.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
[Cowart, Jim S.] US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
[McDaniel, Andrew M.] Naval Air Syst, Patuxent River, MD 20670 USA.
RP Prak, DJL (reprint author), US Naval Acad, Dept Chem, 572M Holloway Rd, Annapolis, MD 21402 USA.
EM prak@usna.edu
FU Office of Naval Research
FX This work was funded by the Office of Naval Research.
NR 81
TC 11
Z9 11
U1 3
U2 29
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0021-9568
J9 J CHEM ENG DATA
JI J. Chem. Eng. Data
PD NOV
PY 2014
VL 59
IS 11
BP 3571
EP 3585
DI 10.1021/je500498m
PG 15
WC Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
SC Thermodynamics; Chemistry; Engineering
GA AT5IR
UT WOS:000344977600032
ER
PT J
AU Prak, DJL
Cowart, JS
Trulove, PC
AF Prak, Dianne J. Luning
Cowart, Jim S.
Trulove, Paul C.
TI Density, Viscosity, Speed of Sound, Bulk Modulus, and Surface Tension of
Binary Mixtures of n-Heptane+2,2,4-Trimethylpentane at (293.15 to
338.15) K and 0.1 MPa
SO JOURNAL OF CHEMICAL AND ENGINEERING DATA
LA English
DT Article
ID N-HEPTANE; REFRACTIVE-INDEXES; HIGH-PRESSURE; LIQUID-SYSTEMS;
FLASH-POINT; 2,2,4-TRIMETHYLPENTANE; ALKANES; FUELS; TEMPERATURE; DECANE
AB In this work, the physical properties of binary mixtures of n-heptane and 2,2,4-trimethylpentane were measured. Density and speed of sound were measured at temperatures ranging from (293.15 to 338.15) K, and viscosity was measured at temperatures ranging from (293.15 to 333.15) K. At 298.15 K, pure component values for heptane of 679.61 kg.m3, 0.389 mPa.s, and 1130.1 m.s-(1) for density, viscosity, and speed of sound, respectively, agree with literature values. Similarly for 2,2,4-trimethylpentane, the values of 687.70 kg.m3, 0.501 mPa.s, and 1081.7 m.s-(1) for density, viscosity, and speed of sound, respectively, agree with literature values. Density mole fraction and temperature data were fit to a second-order polynomial. Bulk moduli ranged from (551.7 to 907.1) MPa over (293.15 to 338.15) K. Viscosity mole fraction data were fit using the three-body McAllister model, while the viscosity deviations were fit to a RedlichKister type equation. For the mixtures, an increase in mole fraction of 2,2,4-trimethylpentane resulted in an increase in density and viscosity and in a decrease in speed of sound, bulk modulus, and surface tension. Increases in temperature decreased density, viscosity, speed of sound, and bulk modulus. At room temperature, the surface tension values ranged from (18.7 to 20.3) mN.m-(1). These data can be used by researchers who are modeling the combustion process of mixtures of primary reference fuels and are modeling the physical properties of fuels.
C1 [Prak, Dianne J. Luning; Trulove, Paul C.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
[Cowart, Jim S.] US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
RP Prak, DJL (reprint author), US Naval Acad, Dept Chem, 572M Holloway Rd, Annapolis, MD 21402 USA.
EM prak@usna.edu
FU Office of Naval Research; Naval Academy Research Council Faculty
Recognition Grant
FX This work was funded by the Office of Naval Research and a Naval Academy
Research Council Faculty Recognition Grant.
NR 55
TC 5
Z9 5
U1 3
U2 24
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0021-9568
J9 J CHEM ENG DATA
JI J. Chem. Eng. Data
PD NOV
PY 2014
VL 59
IS 11
BP 3842
EP 3851
DI 10.1021/je5007532
PG 10
WC Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
SC Thermodynamics; Chemistry; Engineering
GA AT5IR
UT WOS:000344977600064
ER
PT J
AU Chamberlin, RE
Guzas, EL
Ambrico, JM
AF Chamberlin, Ryan E.
Guzas, Emily L.
Ambrico, Joseph M.
TI Energy balance during underwater implosion of ductile metallic cylinders
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
AB Energy-based metrics are developed and applied to a numerical test case of implosion of an underwater pressure vessel. The energy metrics provide estimates of the initial energy in the system (potential energy), the energy released into the fluid as a pressure pulse, the energy absorbed by the imploding structure, and the energy absorbed by air trapped within the imploding structure. The primary test case considered is the implosion of an aluminum cylinder [diameter: 2.54 cm (1 in.), length: 27.46 cm (10.81 in.)] that collapses flat in a mode-2 shape with minimal fracture. The test case indicates that the structure absorbs the majority (92%) of the initial energy in the system. Consequently, the energy emitted as a pressure pulse into the fluid is a small fraction, approximately 5%, of the initial energy. The energy absorbed by the structure and the energy emitted into the fluid are calculated for additional simulations of underwater pressure vessel implosions. For all cases investigated, there is minimal fracture in the collapse, the structure absorbs more than 80% of the initial energy of the system, and the released pressure pulse carries away less than 6% of the initial energy.
C1 [Chamberlin, Ryan E.; Guzas, Emily L.; Ambrico, Joseph M.] Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Chamberlin, RE (reprint author), Naval Undersea Warfare Ctr, 1176 Howell St,Bldg 990,Code 4121, Newport, RI 02841 USA.
EM ryan.e.chamberlin@navy.mil
FU In-House Laboratory Independent Research (ILIR) Program of the Naval
Undersea Warfare Center; Office of Naval Research (ONR)
FX The authors would like to acknowledge the support for this research from
the In-House Laboratory Independent Research (ILIR) Program of the Naval
Undersea Warfare Center as well as the Office of Naval Research (ONR).
Access to simulation and experimental data provided by James LeBlanc,
Stephen Turner, and the ONR Payload Implosion and Platform Damage
Avoidance Program is gratefully acknowledged. The use of experimental
data from the Small Business Innovation Research effort conducted by the
Texas Research Institute Austin, Inc. (Dingus, 2007) for model
validation is also gratefully acknowledged.
NR 17
TC 3
Z9 3
U1 1
U2 3
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 NOV
PY 2014
VL 136
IS 5
BP 2489
EP 2496
DI 10.1121/1.4896744
PG 8
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA AT5NG
UT WOS:000344989000020
PM 25373951
ER
PT J
AU Finneran, JJ
Schroth-Miller, M
Borror, N
Tormey, M
Brewer, A
Black, A
Bakhtiari, K
Goya, G
AF Finneran, James J.
Schroth-Miller, Maddie
Borror, Nancy
Tormey, Megan
Brewer, Arial
Black, Amy
Bakhtiari, Kimberly
Goya, Gavin
TI Multi-echo processing by a bottlenose dolphin operating in "packet"
transmission mode at long range
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID TURSIOPS-TRUNCATUS; ECHOLOCATING DOLPHIN; AUDITORY MASKING; OPEN WATERS;
SIGNALS; NOISE; PATTERNS; TARGET; TASKS
AB Bottlenose dolphins performing echolocation tasks at long ranges may utilize a transmission mode where bursts, or "packets," of echolocation clicks are emitted rather than single clicks. The clicks within each packet are separated by time intervals well below the two-way travel time, while the packets themselves are emitted at intervals greater than the two-way travel time. Packet use has been shown to increase with range; however, the exact function of packets and the advantages gained by their utilization remain unknown. In this study, the capability for dolphins to utilize multi-echo processing within packets of echoes was investigated by manipulating the number of available echoes within each packet as a dolphin performed a long-range echolocation task. The results showed an improvement in detectability with an increase in the number of echoes in each packet and suggest that packet use is an adaptation to allow multi-echo processing at long ranges without introducing range ambiguity.
C1 [Finneran, James J.] US Navy Marine Mammal Program, Space & Naval Warfare Syst Ctr Pacific, San Diego, CA 92152 USA.
[Schroth-Miller, Maddie; Borror, Nancy; Tormey, Megan] Natl Marine Mammal Fdn, San Diego, CA 92106 USA.
[Brewer, Arial; Black, Amy; Bakhtiari, Kimberly; Goya, Gavin] G2 Software Syst, San Diego, CA 92110 USA.
RP Finneran, JJ (reprint author), US Navy Marine Mammal Program, Space & Naval Warfare Syst Ctr Pacific, Code 71510,53560 Hull St, San Diego, CA 92152 USA.
EM james.finneran@navy.mil
RI Goya, Gerardo/B-1915-2008
OI Goya, Gerardo/0000-0003-1558-9279
FU SSC Pacific Naval Innovative Science and Engineering (NISE) program
FX The authors thank Randall Dear and Jim Powell for logistic support and
Patrick Moore, Jason Mulsow, Dorian Houser, and Brian Branstetter for
helpful discussions on the experimental approach and data. Roxanne Echon
assisted with data analysis. The study followed a protocol approved by
the Institutional Animal Care and Use Committee at the Biosciences
Division, Space and Naval Warfare Systems Center (SSC) Pacific, and the
Navy Bureau of Medicine and Surgery and followed all applicable U.S.
Department of Defense guidelines. Financial support was provided by the
SSC Pacific Naval Innovative Science and Engineering (NISE) program.
NR 29
TC 2
Z9 2
U1 1
U2 15
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 NOV
PY 2014
VL 136
IS 5
BP 2876
EP 2886
DI 10.1121/1.4898043
PG 11
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA AT5NG
UT WOS:000344989000055
PM 25373986
ER
PT J
AU Crocker, SE
Nielsen, PL
Miller, JH
Siderius, M
AF Crocker, Steven E.
Nielsen, Peter L.
Miller, James H.
Siderius, Martin
TI Geoacoustic inversion of ship radiated noise in shallow water using data
from a single hydrophone
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
AB The Centre for Maritime Research and Experimentation conducted a geoacoustic inverse experiment in the Mediterranean Sea in the summer of 2012. Among the objectives was to employ an autonomous underwater vehicle to collect acoustic data to invert for properties of the seafloor. Inversion results for the compression wave speed in the bottom and the source spectrum of the R/V Alliance during a close approach to the bottom moored vehicle are presented. The estimated wave speed was 1529 m/s (sigma = 10). The source spectrum of the Alliance was estimated across more than six octaves of frequency.
C1 [Crocker, Steven E.] Naval Undersea Warfare Ctr, Sensors & Sonar Syst Dept, Newport, RI 02841 USA.
[Nielsen, Peter L.] Ctr Maritime Res & Experimentat, I-19126 Liguria, Italy.
[Miller, James H.] Univ Rhode Isl, Dept Ocean Engn, Narragansett, RI 02882 USA.
[Siderius, Martin] Portland State Univ, Portland, OR 97201 USA.
RP Crocker, SE (reprint author), Naval Undersea Warfare Ctr, Sensors & Sonar Syst Dept, 1176 Howell St, Newport, RI 02841 USA.
EM steven.crocker@navy.mil; nielsen@cmre.nato.int; miller@egr.uri.edu;
siderius@pdx.edu
OI Miller, James H./0000-0001-7156-3589
FU CMRE; Office of Naval Research; Underwater Sound Reference Division at
the Naval Undersea Warfare Center
FX The authors would like to thank the personnel of the CMRE Engineering
Department for their development of the acoustic array deployed on the
AUV and for their support during the sea trial. The authors are also
grateful for the professionalism of the officers and crew of the R/V
Alliance. This work was supported by CMRE, the Office of Naval Research,
and the Underwater Sound Reference Division at the Naval Undersea
Warfare Center.
NR 6
TC 1
Z9 2
U1 1
U2 12
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 NOV
PY 2014
VL 136
IS 5
BP EL362
EP EL368
DI 10.1121/1.4898739
PG 7
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA AT5NG
UT WOS:000344989000004
PM 25373994
ER
PT J
AU Alampay, MM
Haigney, MC
Flanagan, MC
Perito, RM
Love, KM
Grammer, GG
AF Alampay, Miguel M.
Haigney, Mark C.
Flanagan, Michael C.
Perito, Robert M.
Love, Kathleen M.
Grammer, Geoffrey G.
TI Transcranial Magnetic Stimulation as an Antidepressant Alternative in a
Patient With Brugada Syndrome and Recurrent Syncope
SO MAYO CLINIC PROCEEDINGS
LA English
DT Article
ID BEDSIDE; DRUGS
AB Brugada syndrome (BrS) is a common occult cause of sudden cardiac arrest in otherwise healthy-appearing adults. The pathognomonic electrocardiographic pattern may be unmasked only by certain medications, many of which are unknown. We report a case of a depressed but otherwise healthy man with an asymptomatic right bundle branch block on electrocardiography who experienced antidepressant-induced BrS and ultimately recovered with transcranial magnetic stimulation (TMS). After an initial trial of nortriptyline, the patient's depressive symptoms improved; however, he experienced a syncopal event and was subsequently diagnosed as having BrS. Cross titration to bupropion, which had not previously been known to exacerbate BrS, was followed by another cardiac event. As a result, the patient was referred for TMS as a substitute for pharmacotherapy. After 31 TMS sessions over 8 weeks, the patient demonstrated significant improvement by subjective report and objective reduction in his Patient Health Questionnaire-9 scores from 10 (moderate) to 1 (minimal). Transcranial magnetic stimulation is a Food and Drug Administration-approved nonpharmacologic treatment for depression. Given the potential lethality of BrS with known and unknown psychopharmacologic agents, providers should consider TMS as first-line therapy in this patient population. Bupropion should be added to the list of agents known to exacerbate this disease. (C) 2014 Mayo Foundation for Medical Education and Research
C1 [Alampay, Miguel M.; Perito, Robert M.] Walter Reed Natl Mil Med Ctr, Dept Psychiat, Bethesda, MD USA.
[Haigney, Mark C.] Uniformed Serv Univ Hlth Sci, Dept Med Cardiol, Bethesda, MD 20814 USA.
[Flanagan, Michael C.] Ft Belvoir Community Hosp, Dept Cardiol, Ft Belvoir, VA USA.
[Love, Kathleen M.] Naval Hosp, Dept Cardiol, Camp Pendleton, CA USA.
[Grammer, Geoffrey G.] Natl Intrepid Ctr Excellence, Dept Res, Bethesda, MD USA.
RP Alampay, MM (reprint author), 8901 Wisconsin Ave,Bldg 19,Room 6407, Bethesda, MD 20889 USA.
EM miguel.m.alampay.mil@health.mil
NR 12
TC 1
Z9 1
U1 0
U2 0
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0025-6196
EI 1942-5546
J9 MAYO CLIN PROC
JI Mayo Clin. Proc.
PD NOV
PY 2014
VL 89
IS 11
BP 1584
EP 1587
DI 10.1016/j.mayocp.2014.08.010
PG 4
WC Medicine, General & Internal
SC General & Internal Medicine
GA AT4UK
UT WOS:000344938300018
PM 25444490
ER
PT J
AU Jacobs, GA
Bartels, BP
Bogucki, DJ
Beron-Vera, FJ
Chen, SS
Coelho, EF
Curcic, M
Griffa, A
Gough, M
Haus, BK
Haza, AC
Helber, RW
Hogan, PJ
Huntley, HS
Iskandarani, M
Judt, F
Kirwan, AD
Laxague, N
Valle-Levinson, A
Lipphardt, BL
Mariano, AJ
Ngodock, HE
Novelli, G
Olascoaga, MJ
Ozgokmen, TM
Poje, AC
Reniers, AJHM
Rowley, CD
Ryan, EH
Smith, SR
Spence, PL
Thoppil, PG
Wei, MZ
AF Jacobs, Gregg A.
Bartels, Brent P.
Bogucki, Darek J.
Beron-Vera, Francisco J.
Chen, Shuyi S.
Coelho, Emanuel F.
Curcic, Milan
Griffa, Annalisa
Gough, Matthew
Haus, Brian K.
Haza, Angelique C.
Helber, Robert W.
Hogan, Patrick J.
Huntley, Helga S.
Iskandarani, Mohamed
Judt, Falko
Kirwan, A. D., Jr.
Laxague, Nathan
Valle-Levinson, Arnoldo
Lipphardt, Bruce L., Jr.
Mariano, Arthur J.
Ngodock, Hans E.
Novelli, Guillaume
Olascoaga, M. Josefina
Oezgoekmen, Tamay M.
Poje, Andrew C.
Reniers, Ad J. H. M.
Rowley, Clark D.
Ryan, Edward H.
Smith, Scott R.
Spence, Peter L.
Thoppil, Prasad G.
Wei, Mozheng
TI Data assimilation considerations for improved ocean predictability
during the Gulf of Mexico Grand Lagrangian Deployment (GLAD)
SO OCEAN MODELLING
LA English
DT Article
DE Ocean; Assimilation; Modeling; Gulf of Mexico; Drifter; Covariance
ID GLOBAL OCEAN; COHERENT STRUCTURES; SYSTEM; MODEL; PREDICTION; MESOSCALE;
SIMULATION; TRANSPORT; DYNAMICS; IMPACT
AB Ocean prediction systems rely on an array of assumptions to optimize their data assimilation schemes. Many of these remain untested, especially at smaller scales, because sufficiently dense observations are very rare. A set of 295 drifters deployed in July 2012 in the north-eastern Gulf of Mexico provides a unique opportunity to test these systems down to scales previously unobtainable. In this study, background error covariance assumptions in the 3DVar assimilation process are perturbed to understand the effect on the solution relative to the withheld dense drifter data. Results show that the amplitude of the background error covariance is an important factor as expected, and a proposed new formulation provides added skill. In addition, the background error covariance time correlation is important to allow satellite observations to affect the results over a period longer than one daily assimilation cycle. The results show the new background error covariance formulations provide more accurate placement of frontal positions, directions of currents and velocity magnitudes. These conclusions have implications for the implementation of 3DVar systems as well as the analysis interval of 4DVar systems. Published by Elsevier Ltd.
C1 [Jacobs, Gregg A.; Coelho, Emanuel F.; Helber, Robert W.; Hogan, Patrick J.; Ngodock, Hans E.; Olascoaga, M. Josefina; Oezgoekmen, Tamay M.; Rowley, Clark D.; Smith, Scott R.; Thoppil, Prasad G.; Wei, Mozheng] Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
[Bartels, Brent P.; Spence, Peter L.] Vencore Serv & Solut Inc, Stennis Space Ctr, MS 39529 USA.
[Bogucki, Darek J.] Texas A&M Univ, Coll Sci & Engn, Dept Phys & Environm Sci, Corpus Christi, TX 78412 USA.
[Beron-Vera, Francisco J.; Chen, Shuyi S.; Curcic, Milan; Griffa, Annalisa; Gough, Matthew; Haus, Brian K.; Haza, Angelique C.; Iskandarani, Mohamed; Judt, Falko; Laxague, Nathan; Mariano, Arthur J.; Novelli, Guillaume; Reniers, Ad J. H. M.; Ryan, Edward H.] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA.
[Coelho, Emanuel F.] Univ New Orleans, Dept Phys, New Orleans, LA 70148 USA.
[Griffa, Annalisa] CNR, Ist Sci Marine, I-19032 La Spezia, Italy.
[Huntley, Helga S.; Kirwan, A. D., Jr.; Lipphardt, Bruce L., Jr.] Univ Delaware, Sch Marine Sci & Policy, Newark, DE 19716 USA.
[Valle-Levinson, Arnoldo] Univ Florida, Dept Civil & Coastal Engn, Gainesville, FL 32611 USA.
[Poje, Andrew C.] CUNY Coll Staten Isl, Dept Math, Staten Isl, NY 10314 USA.
RP Jacobs, GA (reprint author), Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
EM Gregg.jacobs@nrlssc.navy.mil
RI CNR, Ismar/P-1247-2014; Judt, Falko/Q-8380-2016;
OI CNR, Ismar/0000-0001-5351-1486; Judt, Falko/0000-0001-7710-9862; Rowley,
Clark/0000-0003-3496-6404
FU BP/The Gulf of Mexico Research Initiative
FX This research is funded by a Grant from BP/The Gulf of Mexico Research
Initiative to the Consortium for Advanced Research on the Transport of
Hydrocarbon in the Environment (CARTHE). The GLAD drifter trajectory
dataset used here is publicly available
(http://dx.doi.org/10.7266/N7VD6WC8). This paper is contribution
NRL/JA/7320-11-1001 and has been approved for public release.
NR 67
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U1 3
U2 15
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1463-5003
EI 1463-5011
J9 OCEAN MODEL
JI Ocean Model.
PD NOV
PY 2014
VL 83
BP 98
EP 117
DI 10.1016/j.ocemod.2014.09.003
PG 20
WC Meteorology & Atmospheric Sciences; Oceanography
SC Meteorology & Atmospheric Sciences; Oceanography
GA AT7DH
UT WOS:000345096400007
ER
PT J
AU Leake, JE
DeVore, CR
Thayer, JP
Burns, AG
Crowley, G
Gilbert, HR
Huba, JD
Krall, J
Linton, MG
Lukin, VS
Wang, W
AF Leake, J. E.
DeVore, C. R.
Thayer, J. P.
Burns, A. G.
Crowley, G.
Gilbert, H. R.
Huba, J. D.
Krall, J.
Linton, M. G.
Lukin, V. S.
Wang, W.
TI Ionized Plasma and Neutral Gas Coupling in the Sun's Chromosphere and
Earth's Ionosphere/Thermosphere
SO SPACE SCIENCE REVIEWS
LA English
DT Review
DE Sun; Ionosphere; Thermosphere; Chromosphere
ID FARLEY-BUNEMAN INSTABILITY; RAYLEIGH-TAYLOR INSTABILITY;
GENERAL-CIRCULATION MODEL; EQUATORIAL SPREAD F; SOLAR-TYPE STARS; ALFVEN
WAVES; MAGNETIC-FIELDS; QUIET-SUN; NUMERICAL SIMULATIONS; FILAMENTARY
STRUCTURE
AB We review physical processes of ionized plasma and neutral gas coupling in the weakly ionized, stratified, electromagnetically-permeated regions of the Sun's chromosphere and Earth's ionosphere/thermosphere. Using representative models for each environment we derive fundamental descriptions of the coupling of the constituent parts to each other and to the electric and magnetic fields, and we examine the variation in magnetization of the components. Using these descriptions we compare related phenomena in the two environments, and discuss electric currents, energy transfer and dissipation. We present examples of physical processes that occur in both atmospheres, the descriptions of which have previously been conducted in contrasting paradigms, that serve as examples of how the chromospheric and ionospheric communities can further collaborate. We also suggest future collaborative studies that will help improve our understanding of these two different atmospheres, which while sharing many similarities, also exhibit large disparities in key quantities.
C1 [Leake, J. E.] George Mason Univ, Fairfax, VA 22030 USA.
[Huba, J. D.; Krall, J.; Linton, M. G.; Lukin, V. S.] Naval Res Lab, Washington, DC 20375 USA.
[DeVore, C. R.; Gilbert, H. R.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Thayer, J. P.] Univ Colorado, Boulder, CO 80309 USA.
[Burns, A. G.; Wang, W.] NCAR, Boulder, CO 80307 USA.
[Crowley, G.] Atmospher & Space Technol Res Associates, Boulder, CO 80301 USA.
RP Leake, JE (reprint author), George Mason Univ, Fairfax, VA 22030 USA.
EM jleake@gmu.edu
RI DeVore, C/A-6067-2015; Burns, Alan/L-1547-2013; Wang,
Wenbin/G-2596-2013; THAYER, JEFFREY P./B-7264-2016
OI DeVore, C/0000-0002-4668-591X; Wang, Wenbin/0000-0002-6287-4542; THAYER,
JEFFREY P./0000-0001-7127-8251
FU NASA's Living with a Star (LWS) Targeted Research and Technology (TRT)
program; NASA's "Living with a Star" Targeted Research and Technology
program "Plasma-Neutral Gas Coupling in the Chromosphere and
Ionosphere"; National Science Foundation
FX This work was supported by NASA's Living with a Star (LWS) Targeted
Research and Technology (TR&T) program. Numerical simulations were
performed under a grant of computer time from the Department of Defense
(DoD) High Performance Computing (HPC) program. The Authors thank the
anonymous referees who contributed significantly to the improvement of
this manuscript.; This work was funded by NASA's "Living with a Star"
Targeted Research and Technology program "Plasma-Neutral Gas Coupling in
the Chromosphere and Ionosphere". Numerical simulations were performed
using a grant of computer time from the DoD High Performance Computing
Program. NCAR is sponsored by the National Science Foundation.
NR 151
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Z9 11
U1 0
U2 16
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-6308
EI 1572-9672
J9 SPACE SCI REV
JI Space Sci. Rev.
PD NOV
PY 2014
VL 184
IS 1-4
BP 107
EP 172
DI 10.1007/s11214-014-0103-1
PG 66
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AU0NJ
UT WOS:000345319600004
ER
PT J
AU Bond, R
Underwood, S
Adams, DE
Cummins, JJ
AF Bond, Ray
Underwood, Sara
Adams, Douglas E.
Cummins, Joshua J.
TI Structural health monitoring-based methodologies for managing
uncertainty in aircraft structural life assessment
SO STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
LA English
DT Article
DE Structural health monitoring; rotorcraft; composites; wide-area
inspection; impact identification; uncertainty management; aircraft
maintenance; risk reduction
ID STIFFENED COMPOSITE PANELS; IMPACT IDENTIFICATION; PIEZOELECTRIC
SENSORS; LOCATION; SYSTEM
AB Aircraft maintenance approaches that rely on only scheduled inspections have an intrinsic amount of uncertainty and risk because intervals do not reflect the loading and damage history of individual aircraft. This risk is more pronounced in composite aircraft, because damage is often not visually apparent. This work presents two case studies of complementary structural health monitoring methods that are designed to reduce the risk in aircraft maintenance, as well as the cost of frequent, lengthy inspections. The first is an impact identification system which is capable of locating impacts to a full-scale fuselage using only three sensors. This impact identification method is able to quantify the severity of impacts, allowing maintenance personnel to focus inspections on areas that have sustained frequent and/or high-amplitude impacts. Using this method, over 97% of impacts to a heavy-lift helicopter fuselage are located within 9 in of the true impact location. The second case study details the development of a noncontact wide-area inspection method, which has the potential to reduce inspection times and uncertainty as compared to labor-intensive inspection methods such as coin tap testing. This inspection method exploits the nonlinear forced vibration characteristics of damaged areas through surface velocity measurements acquired by a scanning laser vibrometer. By comparing the structure's response to forcing functions of differing magnitudes, the local nonlinear characteristics of damage are identified. This automated inspection method is shown to be effective in locating subsurface damage in composite helicopter panels and has the potential to reduce both labor costs and damage detection uncertainty.
C1 [Bond, Ray; Underwood, Sara; Adams, Douglas E.] Purdue Univ, W Lafayette, IN 47907 USA.
[Cummins, Joshua J.] Naval Air Syst Command, Patuxent River, MD USA.
RP Cummins, JJ (reprint author), Vanderbilt Univ, Lab Syst Integr & Reliabil, Nashville, TN 37228 USA.
EM joshua.j.cummins@vanderbilt.edu
FU NAVAIR; SAIC JSORD [PMA261, N00178-04-D-4119]
FX The authors would like to acknowledge the support from NAVAIR and PMA261
in this work through contract N00178-04-D-4119 via SAIC JSORD.
NR 38
TC 2
Z9 3
U1 2
U2 16
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1475-9217
EI 1741-3168
J9 STRUCT HEALTH MONIT
JI Struct. Health Monit.
PD NOV
PY 2014
VL 13
IS 6
BP 621
EP 628
DI 10.1177/1475921714553733
PG 8
WC Engineering, Multidisciplinary; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA AT9EQ
UT WOS:000345231200006
ER
PT J
AU Johnson, WB
Barnett, JE
Elman, NS
Forrest, L
Schwartz-Mette, R
Kaslow, NJ
AF Johnson, W. Brad
Barnett, Jeffrey E.
Elman, Nancy S.
Forrest, Linda
Schwartz-Mette, Rebecca
Kaslow, Nadine J.
TI Preparing Trainees for Lifelong Competence: Creating a Communitarian
Training Culture
SO TRAINING AND EDUCATION IN PROFESSIONAL PSYCHOLOGY
LA English
DT Article
DE competence; training; colleague; communitarian; ethics
ID PROFESSIONAL PSYCHOLOGY; CLINICAL-PSYCHOLOGY; SOCIAL DESIRABILITY;
SELF-ASSESSMENT; MODEL; PERCEPTIONS; IMPAIRMENT; PRINCIPLES; EDUCATION;
SEEKING
AB Professional psychology training programs exert a powerful influence on the ways in which trainees come to appreciate and respond to the ethical mandate to ensure their own professional competence. If training psychologists overemphasize individualistic conceptions of lifelong competence, then trainees may be at risk for professional isolation if and when they experience problems of professional competence. In this article, we describe the virtues of communitarianism as an important shift from individual to community conceptions of competence obligations. We introduce the Communitarian Training Culture (CTC), a training ethos that embraces and supports the evolving culture of competence in psychology while infusing it with a distinctly interdependent and communal character. We describe the contours of an effective CTC and provide specific recommendations for psychology training leaders interested in enhancing the communitarian character of their program.
C1 [Johnson, W. Brad] US Naval Acad, Dept Leadership Eth & Law, Annapolis, MD 21402 USA.
[Barnett, Jeffrey E.] Loyola Univ Maryland, Baltimore, MD USA.
[Elman, Nancy S.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Forrest, Linda] Univ Oregon, Ctr Divers & Community, Fac Outreach, Eugene, OR 97403 USA.
Univ Wyoming, Laramie, WY 82071 USA.
[Kaslow, Nadine J.] Emory Univ, Atlanta, GA 30322 USA.
RP Johnson, WB (reprint author), US Naval Acad, Dept Leadership Eth & Law, Luce Hall 7B, Annapolis, MD 21402 USA.
EM johnsonb@usna.edu
OI Barnett, Jeffrey/0000-0003-0664-4168
NR 73
TC 2
Z9 2
U1 3
U2 9
PU EDUCATIONAL PUBLISHING FOUNDATION-AMERICAN PSYCHOLOGICAL ASSOC
PI WASHINGTON
PA 750 FIRST ST, NE, WASHINGTON, DC 20002-4242 USA
SN 1931-3918
EI 1931-3926
J9 TRAIN EDUC PROF PSYC
JI Train. Educ. Prof. Psychol.
PD NOV
PY 2014
VL 8
IS 4
BP 211
EP 220
DI 10.1037/tep0000048
PG 10
WC Psychology, Educational
SC Psychology
GA AT8BX
UT WOS:000345159800003
ER
PT J
AU Pullen, WM
Henebry, A
Gaskill, T
AF Pullen, W. Michael
Henebry, Andrew
Gaskill, Trevor
TI Variability of Acetabular Coverage Between Supine and Weightbearing
Pelvic Radiographs
SO AMERICAN JOURNAL OF SPORTS MEDICINE
LA English
DT Article
DE pelvic tilt; femoroacetabular impingement; acetabular coverage; pelvic
tilt variability
ID FEMOROACETABULAR IMPINGEMENT; ADULT HIP; OSTEOARTHRITIS; RELIABILITY;
ALIGNMENT
AB Background: Radiographic measures of acetabular coverage are essential screening tools used to characterize bony structure contributing to femoroacetabular impingement (FAI). Small changes in pelvic tilt result in altered radiographic measures of acetabular coverage. Positional changes in pelvic tilt are known to occur between the supine and weightbearing positions. It is unclear whether alteration of pelvic tilt between these positions is clinically sufficient to influence measures of acetabular coverage.
Purpose/Hypothesis: To determine whether, and to what degree, imaging position (supine vs weightbearing) is capable of altering several measures of acetabular orientation: pubic symphysis to sacrococcygeal distance (PSSC), angle of Sharp (SA), Tonnis angle (TA), percentage of acetabular crossover (CO), and lateral center-edge angle of Wiberg (LCEA). The hypothesis was that imaging position would significantly alter all measures of acetabular orientation.
Study Design: Cohort study (diagnosis); Level of evidence, 2.
Methods: A total of 50 consecutive symptomatic hips referred to a single provider for FAI were evaluated with standardized supine and weightbearing anteroposterior pelvic radiographs. Two independent reviewers blinded to patient positioning reviewed each radiograph at 2 separate time points. Mean measurements in each position were compared by use of paired Student t tests, and a Bonferroni-adjusted significance level of P = .01 was used to represent significance.
Results: Statistically significant differences between the supine and weightbearing radiographs were identified for PSSC and all measures of acetabular coverage (P < .003). The mean PSSC decreased between the supine and weightbearing positions by an average of 13.4 mm (P < .001), thereby resulting in decreased mean LCEA, TA, SA, and CO of 1.2 degrees, 1.3 degrees, 0.8 degrees, and 6.3%, respectively (P < .002). The change in positional pelvic tilt was not uniformly predictable and accounted for large measurement changes in some individuals. PSSC also demonstrated considerable inter- and intrasubject variability but averaged 55.8 mm supine and 44.9 mm weightbearing for females and 37.0 mm supine and 20.6 mm weightbearing for males.
Conclusion: In this study of nonarthritic adult patients with hip pain, the data indicate that positional changes are capable of significantly altering pelvic tilt and radiographic measures of acetabular coverage. It appears that the weightbearing position typically, but not universally, correlates with additional posterior pelvic tilt and decreased measures of acetabular coverage. Individual positional variability can contribute to large-magnitude changes in radiographic acetabular measures.
C1 [Pullen, W. Michael; Henebry, Andrew; Gaskill, Trevor] Naval Med Ctr Portsmouth, Dept Orthopaed Surg, Portsmouth, VA 23708 USA.
RP Gaskill, T (reprint author), Naval Med Ctr Portsmouth, Dept Orthopaed Surg, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
EM trevor.gaskill@med.navy.mil
NR 15
TC 10
Z9 10
U1 0
U2 0
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0363-5465
EI 1552-3365
J9 AM J SPORT MED
JI Am. J. Sports Med.
PD NOV
PY 2014
VL 42
IS 11
BP 2643
EP 2648
DI 10.1177/0363546514548854
PG 6
WC Orthopedics; Sport Sciences
SC Orthopedics; Sport Sciences
GA AT0XU
UT WOS:000344658000016
PM 25214530
ER
PT J
AU Myers-Ward, RL
Mahadik, NA
Wheeler, VD
Nyakiti, LO
Stahlbush, RE
Imhoff, EA
Hobart, KD
Eddy, CR
Gaskill, DK
AF Myers-Ward, R. L.
Mahadik, N. A.
Wheeler, V. D.
Nyakiti, L. O.
Stahlbush, R. E.
Imhoff, E. A.
Hobart, K. D.
Eddy, C. R., Jr.
Gaskill, D. K.
TI Spontaneous Conversion of Basal Plane Dislocations in 4 Off-Axis 4H-SiC
Epitaxial Layers
SO CRYSTAL GROWTH & DESIGN
LA English
DT Article
ID GROWTH; EPILAYERS; DEFECTS; CUT; REDUCTION
AB The conversion of basal plane dislocations (BPDs) to electrically benign threading edge dislocations in 4 degrees off-axis 4HSiC epilayers has been investigated using ultraviolet photoluminescence imaging. The conversion spontaneously occurred throughout the epitaxial layer for all substrates studied using similar epitaxial growth conditions. BPD conversion in highly doped epilayers was suppressed compared with lower n-type doped layers, suggesting that nitrogen concentration influences the conversion mechanism. However, it is technologically important for the conversion to occur in a heavily doped buffer layer. The densities of BPDs in low-doped (similar to 10 (14)cm3) films having a thickness of 20 mu m were significantly reduced when a similar to 20 mu m thick highly doped N+ buffer layer was grown between the low-doped layer and the substrate. Without the buffer layer, an average of similar to 50 BPDs cm2 was observed and with the buffer layer, an average of 1.5 BPDs cm2 was detected; the best result was 0.2 BPD cm(-2). A PiN structure consisting of a 25 mu m thick N+ buffer layer to convert the majority of BPDs prior to the device structure was used to test the mitigation process, and the diodes demonstrated no forward voltage change after 225 h of continuous biasing at 100 A cm(-2).
C1 [Myers-Ward, R. L.; Mahadik, N. A.; Wheeler, V. D.; Nyakiti, L. O.; Stahlbush, R. E.; Imhoff, E. A.; Hobart, K. D.; Eddy, C. R., Jr.; Gaskill, D. K.] US Naval Res Lab, Washington, DC 20375 USA.
[Nyakiti, L. O.] ASEE, Washington, DC 20036 USA.
RP Myers-Ward, RL (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM rachael.myers-ward@nrl.navy.mil
FU American Society for Engineering Education-U.S. Naval Research
Laboratory Postdoctoral Fellowship Program; Office of Naval Research
FX L.O. Nyaldti acknowledges support from the American Society for
Engineering Education-U.S. Naval Research Laboratory Postdoctoral
Fellowship Program. Research at the U.S. Naval Research Laboratory is
supported by the Office of Naval Research.
NR 23
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U1 1
U2 22
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1528-7483
EI 1528-7505
J9 CRYST GROWTH DES
JI Cryst. Growth Des.
PD NOV
PY 2014
VL 14
IS 11
BP 5331
EP 5338
DI 10.1021/cg500830j
PG 8
WC Chemistry, Multidisciplinary; Crystallography; Materials Science,
Multidisciplinary
SC Chemistry; Crystallography; Materials Science
GA AS8RW
UT WOS:000344516800001
ER
PT J
AU Guo, LW
Xia, L
Bennett, BR
Boos, JB
Ancona, MG
del Alamo, JA
AF Guo, Luke W.
Xia, Ling
Bennett, Brian R.
Boos, J. Brad
Ancona, Mario G.
del Alamo, Jesus A.
TI Enhancing p-channel InGaSb QW-FETs via Process-Induced Compressive
Uniaxial Strain
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE Antimonide; QW-FETs; InGaSb; p-FET; stressed dielectric; uniaxial strain
ID FIELD-EFFECT TRANSISTORS; COMPOUND SEMICONDUCTORS
AB We study the effect of process-induced uniaxial stress on the performance of biaxially strained InGaSb p-channel quantum-well field-effect transistors (QW-FETs). Uniaxial stress is incorporated using a self-aligned nitride stressor. Compared with unstressed control devices, fabricated stressed devices with a gate length of L-g = 0.30 mu m showed an increase of more than 40% in the drain current at VGS-VT = -0.5 V and V-DS = -2.0 V, an enhancement of more than 40% in the peak extrinsic transconductance at V-DS = -2.0 V, and a reduction in the source and drain resistance of 25%. These figures suggest an enhancement of the intrinsic transconductance by as much as 60%. The improvement in device characteristics was also found to scale favorably with gate length. The results indicate that process-induced compressive uniaxial strain holds great promise for developing high-performance antimonide-based p-FETs.
C1 [Guo, Luke W.; Xia, Ling; del Alamo, Jesus A.] MIT, Microsyst Technol Labs, Cambridge, MA 02139 USA.
[Bennett, Brian R.; Boos, J. Brad; Ancona, Mario G.] Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
RP Guo, LW (reprint author), MIT, Microsyst Technol Labs, Cambridge, MA 02139 USA.
EM lukeguo@mit.edu
RI Xia, Ling/G-5573-2012; Bennett, Brian/A-8850-2008
OI Bennett, Brian/0000-0002-2437-4213
FU Intel Corporation; National Science Foundation through a Graduate
Research Fellowship
FX This work was supported by Intel Corporation. The work of L. W. Guo was
supported by the National Science Foundation through a Graduate Research
Fellowship. The review of this letter was arranged by Editor J. Cai.
NR 20
TC 4
Z9 4
U1 0
U2 7
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0741-3106
EI 1558-0563
J9 IEEE ELECTR DEVICE L
JI IEEE Electron Device Lett.
PD NOV
PY 2014
VL 35
IS 11
BP 1088
EP 1090
DI 10.1109/LED.2014.2357429
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA AS9WA
UT WOS:000344588100006
ER
PT J
AU Neely, M
Kaplan, EL
Blumer, JL
Faix, DJ
Broderick, MP
AF Neely, Michael
Kaplan, Edward L.
Blumer, Jeffrey L.
Faix, Dennis J.
Broderick, Michael P.
TI A Population Pharmacokinetic Modeling Approach Shows that Serum
Penicillin G Concentrations Are Below Inhibitory Concentrations by Two
Weeks after Benzathine Penicillin G Injection in the Majority of Young
Adults
SO ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
LA English
DT Article
ID A STREPTOCOCCAL PHARYNGITIS; RHEUMATIC-FEVER; VITRO SUSCEPTIBILITY; US
ARMY; CHILDREN; ANTIBIOTICS; METAANALYSIS; PROPHYLAXIS; FAMILIES; BURDEN
AB Serum penicillin G falls to low levels 2 weeks after injection as benzathine penicillin G (BPG) in young adults. Using Pmetrics and previously reported penicillin G pharmacokinetic data after 1.2 million units were given as BPG to 329 male military recruits, here we develop the first reported population pharmacokinetic model of penicillin G after BPG injection. We simulated time-concentration profiles over a broad range of pediatric and adult weights after alternative doses and dose frequencies to predict the probability of maintaining serum penicillin G concentrations of >0.02 mg/liter, a proposed protective threshold against group A Streptococcus pyogenes ( GAS). The final population model included linear absorption into a central compartment, distribution to and from a peripheral compartment, and linear elimination from the central compartment, with allometrically scaled volumes and rate constants. With 1.2 million units of BPG given intramuscularly every 4 weeks in four total doses, only 23.2% of 5,000 simulated patients maintained serum penicillin G trough concentrations of >0.02 mg/liter 4 weeks after the last dose. When the doses were 1.8 million units and 2.4 million units, the percentages were 30.2% and 40.7%, respectively. With repeated dosing of 1.2 million units every 3 weeks and every 2 weeks for 4 doses, the percentages of simulated patients with a penicillin G trough concentration of >0.02 mg/liter were 37.8% and 65.2%, respectively. Our simulations support recommendations for more frequent rather than higher BPG doses to prevent recurrent rheumatic heart disease in areas of high GAS prevalence or during outbreaks.
C1 [Neely, Michael] Childrens Hosp Los Angeles, Lab Appl Pharmacokinet & Bioinformat, Los Angeles, CA 90027 USA.
[Neely, Michael] Univ So Calif, Keck Sch Med, Los Angeles, CA 90033 USA.
[Kaplan, Edward L.] Univ Minnesota, Sch Med, Dept Pediat, Minneapolis, MN 55455 USA.
[Blumer, Jeffrey L.] Case Western Reserve Univ, Sch Med, Dept Pediat, Cleveland, OH 44106 USA.
[Blumer, Jeffrey L.] Case Western Reserve Univ, Sch Med, Dept Pharmacol, Cleveland, OH 44106 USA.
[Faix, Dennis J.; Broderick, Michael P.] Naval Hlth Res Ctr, Operat Infect Dis Dept, San Diego, CA USA.
RP Neely, M (reprint author), Childrens Hosp Los Angeles, Lab Appl Pharmacokinet & Bioinformat, Los Angeles, CA 90027 USA.
EM mneely@usc.edu
FU NIH [GM068968, HD070886, U10-HD-031323-15]; Department of Defense
[W911QY-08-P0281]; Military Vaccine Agency [60501]
FX This work was supported by NIH grants GM068968 and HD070886 (M.N.) and
U10-HD-031323-15 (J.L.B.) as well as Department of Defense grant
W911QY-08-P0281 (M.P.B. and D.J.F.). This work was supported by a grant
from the Military Vaccine Agency to the Naval Health Research Center
(work unit 60501).
NR 32
TC 0
Z9 0
U1 1
U2 5
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0066-4804
EI 1098-6596
J9 ANTIMICROB AGENTS CH
JI Antimicrob. Agents Chemother.
PD NOV
PY 2014
VL 58
IS 11
BP 6735
EP 6741
DI 10.1128/AAC.02744-14
PG 7
WC Microbiology; Pharmacology & Pharmacy
SC Microbiology; Pharmacology & Pharmacy
GA AS3EF
UT WOS:000344158600048
PM 25182635
ER
PT J
AU West, AG
Aviv, AJ
AF West, Andrew G.
Aviv, Adam J.
TI Measuring Privacy Disclosures in URL Query Strings
SO IEEE INTERNET COMPUTING
LA English
DT Article
C1 [Aviv, Adam J.] US Naval Acad, Annapolis, MD 21402 USA.
EM awest@verisign.com; aviv@usna.edu
OI West, Andrew/0000-0001-5840-1032
FU ONR [N001614WX30023]; Maryland Procurement Office [H98230-14-C-0127]
FX This article is a significant extension to the one that appeared in the
Proceedings of the 8th Workshop on Web 2.0 Security and Privacy (W2SP
14). We thank Daniel Kim and Kevin Su for their contributions on a
preliminary version.6 ONR grant N001614WX30023 partially
supported our research; this article is based on work supported by the
Maryland Procurement Office under contract H98230-14-C-0127.
NR 16
TC 0
Z9 0
U1 0
U2 1
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1089-7801
EI 1941-0131
J9 IEEE INTERNET COMPUT
JI IEEE Internet Comput.
PD NOV-DEC
PY 2014
VL 18
IS 6
BP 52
EP 59
PG 8
WC Computer Science, Software Engineering
SC Computer Science
GA AS9XM
UT WOS:000344591800009
ER
PT J
AU Hirst, LC
Yakes, MK
Bailey, CG
Tischler, JG
Lumb, MP
Gonzalez, M
Fuhrer, MF
Ekins-Daukes, NJ
Walters, RJ
AF Hirst, Louise C.
Yakes, Michael K.
Bailey, Christopher G.
Tischler, Joseph G.
Lumb, Matthew P.
Gonzalez, Maria
Fuehrer, Markus F.
Ekins-Daukes, N. J.
Walters, Robert J.
TI Enhanced Hot-Carrier Effects in InAlAs/InGaAs Quantum Wells
SO IEEE JOURNAL OF PHOTOVOLTAICS
LA English
DT Article
DE Hot-carrier solar cell (HCSC); InGaAs; InP; thermalization coefficient;
quantum well (QW)
ID SOLAR-CELL ABSORBERS; ENERGY-LOSS RATES; GAAS; PHOTOLUMINESCENCE;
HETEROSTRUCTURES; THERMALIZATION; EFFICIENCY; ELECTRONS; CONTACTS
AB Hot-carrier solar cells require absorber materials with restricted carrier thermalization pathways, in order to slow the rate of heat energy dissipation from the carrier population to the lattice, relative to the rate of carrier extraction. Absorber suitability can be characterized in terms of carrier thermalization coefficient (Q). Materials with lower Q generate steady-state hot-carrier populations at lower levels of incident solar power and, therefore, are better able to perform as hot-carrier absorbers. In this study, we evaluate Q = 2.5 +/- 0.2W . K-1 . cm(-2) for a In-0.52 AlAs/In0.53GaAs single-quantum-well(QW) heterostructure using photoluminescence spectroscopy. This is the lowest experimentally determined Q value for any material system studied to date. Hot-carrier solar cell simulations, using this material as an absorber yield efficiency similar to 39% at 2000X, which corresponds to a >5% enhancement over an equivalent single-junction thermal equilibrium device.
C1 [Hirst, Louise C.; Yakes, Michael K.; Bailey, Christopher G.; Tischler, Joseph G.; Walters, Robert J.] US Naval Res Lab, Washington, DC 20375 USA.
[Lumb, Matthew P.] George Washington Univ, Washington, DC 20037 USA.
[Gonzalez, Maria] Sotera Def Solut Inc, Annapolis Jct, MD 20701 USA.
[Fuehrer, Markus F.; Ekins-Daukes, N. J.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
RP Hirst, LC (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
EM louise.hirst.ctr@nrl.navy.mil; michael.yakes@nrl.navy.mil;
christo-pher.bailey.ctr@nrl.navy.mil; joseph.tischler@nrl.navy.mil;
matthew.lumb.ctr.uk@nrl.navy.mil; maria.gonzalez.ctr.sp@nrl.navy.mil;
markus.fuhrer@imperial.ac.uk; n.ekins-daukes@imperial.ac.uk;
robert.walters@nrl.navy.mil
FU Office of Naval Research; National Research Council Research
Associateship Program
FX This work was supported by the Office of Naval Research. L.C.H. and
C.G.B. acknowledge support from the National Research Council Research
Associateship Program.
NR 38
TC 8
Z9 8
U1 2
U2 16
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 2156-3381
J9 IEEE J PHOTOVOLT
JI IEEE J. Photovolt.
PD NOV
PY 2014
VL 4
IS 6
BP 1526
EP 1531
DI 10.1109/JPHOTOV.2014.2355412
PG 6
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA AS9DH
UT WOS:000344542900032
ER
PT J
AU Escobar, S
Meadows, C
Meseguer, J
Santiago, S
AF Escobar, Santiago
Meadows, Catherine
Meseguer, Jose
Santiago, Sonia
TI State space reduction in the Maude-NRL Protocol Analyzer
SO INFORMATION AND COMPUTATION
LA English
DT Article
ID MODEL; CHECKING; SECURITY; NPA
AB The Maude-NRL Protocol Analyzer (Maude-NPA) is a tool and inference system for reasoning about the security of cryptographic protocols in which the cryptosystems satisfy different equational properties. It both extends and provides a formal framework for the original NRL Protocol Analyzer, which supported equational reasoning in a more limited way. Maude-NPA supports a wide variety of algebraic properties that includes many cryptosystems of interest such as, for example, one-time pads and Diffie-Hellman. Maude-NPA, like the original NPA, looks for attacks by searching backwards from an insecure attack state, and assumes an unbounded number of sessions. Because of the unbounded number of sessions and the support for different equational theories, it is necessary to develop ways of reducing the search space and avoiding infinite search paths. In order for the techniques to prove useful, they need not only to speed up the search, but should not violate completeness, so that failure to find attacks still guarantees security. In this paper we describe some state space reduction techniques that we have implemented in Maude-NPA. We also provide completeness proofs, and experimental evaluations of their effect on the performance of Maude-NPA. (C) 2014 Elsevier Inc. All rights reserved.
C1 [Escobar, Santiago; Santiago, Sonia] Univ Politecn Valencia, DSIC ELP, E-46071 Valencia, Spain.
[Meadows, Catherine] Naval Res Lab, Washington, DC USA.
[Meseguer, Jose] Univ Illinois, Urbana, IL USA.
RP Escobar, S (reprint author), Univ Politecn Valencia, DSIC ELP, E-46071 Valencia, Spain.
EM sescobar@dsic.upv.es; meadows@itd.nrl.navy.mil; meseguer@cs.uiuc.edu;
ssantiago@dsic.upv.es
RI Escobar, Santiago/C-9589-2012
OI Escobar, Santiago/0000-0002-3550-4781
FU EU (FEDER); Spanish MEC/MICINN [TIN 2010-21062-C02-02]; Generalitat
Valenciana [PROMETEO2011/052]; NSF [CNS 09-04749, CCF 09-05584]
FX We would like to thank Antonio Gonzalez for his help in providing
several protocol specifications in Maude-NPA. S. Escobar and S. Santiago
have been partially supported by the EU (FEDER) and the Spanish
MEC/MICINN under grant TIN 2010-21062-C02-02, and by Generalitat
Valenciana PROMETEO2011/052. J. Meseguer and S. Escobar have been
partially supported by NSF grants CNS 09-04749, and CCF 09-05584.
NR 33
TC 1
Z9 1
U1 0
U2 1
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0890-5401
EI 1090-2651
J9 INFORM COMPUT
JI Inf. Comput.
PD NOV
PY 2014
VL 238
SI SI
BP 157
EP 186
DI 10.1016/j.ic.2014.07.007
PG 30
WC Computer Science, Theory & Methods; Mathematics, Applied
SC Computer Science; Mathematics
GA AS0TQ
UT WOS:000343991900007
ER
PT J
AU Lambrakos, SG
AF Lambrakos, S. G.
TI Inverse Thermal Analysis of Ti-6Al-4V Deep-Penetration Welds Using
Volumetric Constraints
SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
LA English
DT Article
DE joining; modeling and simulation; titanium; welding
ID STEEL; MODEL
AB Case study inverse thermal analyses of Ti-6Al-4V deep-penetration welds are presented. These analyses employ a methodology that is in terms of numerical-analytical basis functions for inverse thermal analysis of steady state energy deposition in plate structures. The results of the case studies provide parametric representations of weld temperature histories that can be adopted as input data to various types of computational procedures, such as those for prediction of solid-state phase transformations. In addition, these temperature histories can be used to construct parametric-function representations for inverse thermal analysis of welds corresponding to other process parameters or welding processes whose process conditions are within similar regimes. The present study applies an inverse thermal analysis procedure that provides for the inclusion of volumetric constraint conditions whose two-dimensional projections are mappings onto transverse cross sections of experimentally measured solidification and transformation boundaries.
C1 Naval Res Lab, Mat Sci & Technol Div, Ctr Computat Mat, Washington, DC 20375 USA.
RP Lambrakos, SG (reprint author), Naval Res Lab, Mat Sci & Technol Div, Ctr Computat Mat, Code 6390, Washington, DC 20375 USA.
EM samuel.lambrakos@nrl.navy.mil
FU Naval Research Laboratory (NRL)
FX This work was supported by a Naval Research Laboratory (NRL) internal
core program.
NR 28
TC 1
Z9 1
U1 2
U2 8
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1059-9495
EI 1544-1024
J9 J MATER ENG PERFORM
JI J. Mater. Eng. Perform.
PD NOV
PY 2014
VL 23
IS 11
BP 4019
EP 4031
DI 10.1007/s11665-014-1213-3
PG 13
WC Materials Science, Multidisciplinary
SC Materials Science
GA AS5TA
UT WOS:000344331200023
ER
PT J
AU Jiang, QF
Reinecke, A
Doyle, JD
AF Jiang, Qingfang
Reinecke, Alex
Doyle, James D.
TI Orographic Wave Drag over the Southern Ocean: A Linear Theory
Perspective
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Article
ID GENERAL-CIRCULATION MODEL; MESOSCALE GRAVITY-WAVES; JET-FRONT SYSTEMS;
MIDDLE-ATMOSPHERE; MOUNTAIN WAVES; CLIMATE MODELS; ANDES;
PARAMETERIZATION; BREAKING; PASSAGE
AB Recent studies suggest that stratospheric wind biases in global and climate models in the Southern Hemisphere may result from insufficient orographic wave drag, particularly over the Southern Ocean in the latitude belt centered near 60 degrees S. In this study, contributions to the stratospheric wave drag along 60 degrees S from three neighboring orographic wave sources are evaluated using a multiple-layer linear wave model with large-scale wind and stratification profiles derived from the Interim ECMWF Re-Analysis (ERA-Interim) between the years 1991 and 2010. The orographic wave sources include the Patagonian peaks in the southern Andes, the Antarctic Peninsula, and the island of South Georgia. The climatological and dynamical aspects of the wave drag and its dependence on tropospheric winds are investigated.
The results suggest that these orographic wave sources may have significant contributions to the stratospheric drag over the Southern Ocean through meridional spreading of the wave momentum flux aloft associated with three-dimensional wave propagation. Among the three locations considered, the wave drag from the Antarctic Peninsula is substantially larger than that from Patagonia and nearly two orders of magnitude larger than that from South Georgia island. The orographic wave drag is in general proportional to the westerly component of the surface winds and becomes virtually zero when the surface winds have an easterly component, associated with critical level absorption between the tropospheric easterlies and prevailing westerlies in the stratosphere. The derived wave drag exhibits substantial temporal variations, including synoptic-scale, month-to-month, and interannual variations.
C1 [Jiang, Qingfang; Reinecke, Alex; Doyle, James D.] Naval Res Lab, Monterey, CA 93940 USA.
RP Jiang, QF (reprint author), Naval Res Lab, 7 Grace Hopper Ave, Monterey, CA 93940 USA.
EM jiang@nrlmry.navy.mil
FU Chief of Naval Research through the NRL Base Program [PE 0601153N]
FX This research is supported by the Chief of Naval Research through the
NRL Base Program, PE 0601153N. The authors thank Dr. Pulido and an
anonymous reviewer for their helpful comments.
NR 41
TC 4
Z9 4
U1 0
U2 9
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-4928
EI 1520-0469
J9 J ATMOS SCI
JI J. Atmos. Sci.
PD NOV
PY 2014
VL 71
IS 11
BP 4235
EP 4252
DI 10.1175/JAS-D-14-0035.1
PG 18
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AS4BS
UT WOS:000344219100017
ER
PT J
AU Sou, IM
Calantoni, J
Reed, AH
Furukawa, Y
AF Sou, In Mei
Calantoni, Joseph
Reed, Allen H.
Furukawa, Yoko
TI Initiation of erosion in unidirectional flow using a synchronized
imaging technique
SO JOURNAL OF VISUALIZATION
LA English
DT Article
DE Sediment erosion; Unidirectional flow; Synchronized PIV; Turbulence
C1 [Sou, In Mei; Calantoni, Joseph; Reed, Allen H.; Furukawa, Yoko] Naval Res Lab, Marine Geosci Div, Stennis Space Ctr, MS 39529 USA.
RP Sou, IM (reprint author), Naval Res Lab, Marine Geosci Div, Stennis Space Ctr, MS 39529 USA.
EM inmeisou@gmail.com
FU National Research Council Research Associateship Award; Office of Naval
Research
FX This work was performed while I. M. Sou held a National Research Council
Research Associateship Award and was supported under base funding to the
Naval Research Laboratory from the Office of Naval Research.
NR 4
TC 0
Z9 0
U1 0
U2 2
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 NOV
PY 2014
VL 17
IS 4
BP 303
EP 305
DI 10.1007/s12650-014-0205-6
PG 3
WC Computer Science, Interdisciplinary Applications; Imaging Science &
Photographic Technology
SC Computer Science; Imaging Science & Photographic Technology
GA AS2AZ
UT WOS:000344082700005
ER
PT J
AU Barh, A
Ghosh, S
Varshney, RK
Pal, BP
Sanghera, J
Shaw, LB
Aggarwal, ID
AF Barh, A.
Ghosh, S.
Varshney, R. K.
Pal, B. P.
Sanghera, J.
Shaw, L. B.
Aggarwal, I. D.
TI Mid-IR fiber optic light source around 6 mu m through parametric
wavelength translation
SO LASER PHYSICS
LA English
DT Article
DE microstructured fibers; nonlinear optics; four-wave mixing
ID SUPERCONTINUUM GENERATION; CHALCOGENIDE; FABRICATION; DESIGN; LASERS;
GLASS
AB We report a numerically designed highly nonlinear all-glass chalcogenide microstructured optical fiber (MOF) for the efficient generation of light around 6 mu m through degenerate four-wave mixing by considering a continuous wave CO laser of 5-10 W power emitting at 5.6 mu m as the pump. By tuning the pump wavelength, pump power, fiber dispersion and nonlinear properties, a narrow (N)- and/or broad (B)- band mid-IR all-fiber light source could be realized. Parametric amplification of more than 20 dB is achievable for the N-band source at 6.46 mu m with a maximum power conversion efficiency (C-m) similar to 33%, while a amplification similar to 22 +/- 2 dB is achievable for a B-band source over the wavelength range of 5-6.3 mu m with a C-m > 40%.
C1 [Barh, A.; Varshney, R. K.; Pal, B. P.] Indian Inst Technol Delhi, Dept Phys, New Delhi 110016, India.
[Ghosh, S.] Univ Calcutta, Inst Radio Phys & Elect, Kolkata 700009, India.
[Sanghera, J.; Shaw, L. B.] US Navy, Res Lab, Washington, DC 20375 USA.
[Aggarwal, I. D.] Univ N Carolina, Dept Phys, Charlotte, NC 28223 USA.
RP Barh, A (reprint author), Indian Inst Technol Delhi, Dept Phys, New Delhi 110016, India.
EM ajanta.barh@gmail.com
FU Department of the Navy (USA), Office of Naval Research Global
[N62909-10-1-7141]; CSIR (India); DST (India); [IFA-12]; [PH-13]
FX This work relates to Department of the Navy (USA) Grant N62909-10-1-7141
issued by Office of Naval Research Global to IIT Delhi. The United
States Government has a royalty-free license throughout the world in all
copyrightable material contained herein. Some salient features of these
results were recently reported by us at the OSA's annual conference FiO
at Orlando, FL, in 2013.; AB gratefully acknowledges the award of a
Senior PhD fellowship by CSIR (India). SG acknowledges financial support
from the DST (India) as an INSPIRE Faculty Fellow [IFA-12; PH-13].
NR 22
TC 3
Z9 3
U1 1
U2 18
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1054-660X
EI 1555-6611
J9 LASER PHYS
JI Laser Phys.
PD NOV
PY 2014
VL 24
IS 11
AR 115401
DI 10.1088/1054-660X/24/11/115401
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA AT2YE
UT WOS:000344799600015
ER
PT J
AU Alemberti, A
Smirnov, V
Smith, CF
Takahashi, M
AF Alemberti, Alessandro
Smirnov, Valery
Smith, Craig F.
Takahashi, Minoru
TI Overview of lead-cooled fast reactor activities
SO PROGRESS IN NUCLEAR ENERGY
LA English
DT Review
DE LFR; Lead; Fast reactors
AB The lead-cooled fast reactor (LFR) features a fast neutron spectrum, high temperature operation, and cooling by molten lead or lead-bismuth eutectic (LBE), low-pressure, chemically inert liquids with very good thermodynamic properties. It would have multiple applications including production of electricity, hydrogen and process heat. System concepts represented in plans of the Generation IV International Forum (GIF) System Research Plan (SRP) are based on Europe's ELFR lead-cooled system, Russia's BREST-OD-300 and the SSTAR system concept designed in the US.
The LFR has excellent materials management capabilities since it operates in the fast neutron spectrum and uses a closed fuel cycle enhanced by the fertile conversion of uranium. It can also be used as a burner to consume actinides from spent LWR fuel and as a burner/breeder with thorium matrices. An important feature of the LFR is the enhanced safety that results from the choice of molten lead as a chemically inert and low-pressure coolant. In terms of sustainability, lead is abundant and hence available, even in case of deployment of a large number of reactors. More importantly, as with other fast systems, fuel sustainability is greatly enhanced by the conversion capabilities of the LFR fuel cycle. Because they incorporate a liquid coolant with a very high margin to boiling and benign interaction with air or water, LFR concepts offer substantial potential in terms of safety, design simplification, proliferation resistance and the resulting economic performance. An important factor is the potential for benign end state to severe accidents.
The LFR has development needs in the areas of fuels, materials performance, and corrosion control. During the next 5 years progress is expected on materials, system design, and operating parameters. Significant test and demonstration activities are underway and planned during this time frame. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Alemberti, Alessandro] Ansaldo Nucl, Genoa, Italy.
[Smirnov, Valery] NIKIET, Moscow, Russia.
[Smith, Craig F.] Naval Postgrad Sch, Monterey, CA USA.
[Takahashi, Minoru] Tokyo Inst Technol, Tokyo 152, Japan.
RP Alemberti, A (reprint author), Ansaldo Nucl, Genoa, Italy.
EM alessandro.alemberti@ann.ansaldo.it; sval@nikiet.ru; cfsmith@nps.edu;
mtakahas@nr.titech.acjp
NR 19
TC 9
Z9 9
U1 5
U2 30
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0149-1970
J9 PROG NUCL ENERG
JI Prog. Nucl. Energy
PD NOV
PY 2014
VL 77
BP 300
EP 307
DI 10.1016/j.pnucene.2013.11.011
PG 8
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA AS3WT
UT WOS:000344206700028
ER
PT J
AU Englert, CR
Bays, JT
Marr, KD
Brown, CM
Nicholas, AC
Finne, TT
AF Englert, Christoph R.
Bays, J. Timothy
Marr, Kenneth D.
Brown, Charles M.
Nicholas, Andrew C.
Finne, Theodore T.
TI Optical orbital debris spotter
SO ACTA ASTRONAUTICA
LA English
DT Article
DE Space debris; Orbital debris; Kessler syndrome; Detection; Optical;
Laser
ID LOW-EARTH-ORBIT; SPACE; IMPACTS; CONSEQUENCES; SURFACES
AB The number of man-made debris objects orbiting the Earth, or orbital debris, is alarmingly increasing, resulting in the increased probability of degradation, damage, or destruction of operating spacecraft. In part, small objects (< 10 cm) in Low Earth Orbit (LEO) are of concern because they are abundant and difficult to track or even to detect on a routine basis. Due to the increasing debris population it is reasonable to assume that improved capabilities for on-orbit damage attribution, in addition to increased capabilities to detect and track small objects are needed. Here we present a sensor concept to detect small debris with sizes between approximately 1.0 and 0.01 cm in the vicinity of a host spacecraft for near real time damage attribution and characterization of dense debris fields and potentially to provide additional data to existing debris models. Published by Elsevier Ltd. on behalf of IAA.
C1 [Englert, Christoph R.; Brown, Charles M.; Nicholas, Andrew C.; Finne, Theodore T.] Naval Res Lab, Div Space Sci, Geospace Sci & Technol Branch, Washington, DC 20375 USA.
[Bays, J. Timothy] Off Naval Res Reserve Component, Arlington, VA 22203 USA.
[Marr, Kenneth D.] Naval Res Lab, Washington, DC 20375 USA.
RP Englert, CR (reprint author), Naval Res Lab, Div Space Sci, Geospace Sci & Technol Branch, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM christoph.englert@nrl.navy.mil; tim.bays@pnnl.gov
OI Englert, Christoph/0000-0002-2145-6168
FU Naval Research Laboratory
FX This work was supported by the Naval Research Laboratory. Dr. Bays
contributed to this work as a Navy reservist assigned to the Office of
Naval Research. Dr. Marr contributed to this work as an NRC Associate in
residence at Naval Research Laboratory.
NR 23
TC 3
Z9 3
U1 1
U2 15
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0094-5765
EI 1879-2030
J9 ACTA ASTRONAUT
JI Acta Astronaut.
PD NOV
PY 2014
VL 104
IS 1
SI SI
BP 99
EP 105
DI 10.1016/j.actaastro.2014.07.031
PG 7
WC Engineering, Aerospace
SC Engineering
GA AR8RH
UT WOS:000343841700011
ER
PT J
AU Ventura, J
Romano, M
AF Ventura, Jacopo
Romano, Marcello
TI Exact analytic solution for the spin-up maneuver of an axially symmetric
spacecraft
SO ACTA ASTRONAUTICA
LA English
DT Article
DE Rigid-body dynamics and kinematics; Spin-up maneuver; Analytic solution
ID RIGID-BODY; CONSTANT TORQUE; ROTATION; SUBJECT; FORCES; MOTION
AB The problem of spinning-up an axially symmetric spacecraft subjected to an external torque constant in magnitude and parallel to the symmetry axis is considered. The existing exact analytic solution for an axially symmetric body is applied for the first time to this problem. The proposed solution is valid for any initial conditions of attitude and angular velocity and for any length of time and rotation amplitude. Furthermore, the proposed solution can be numerically evaluated up to any desired level of accuracy. Numerical experiments and comparison with an existing approximated solution and with the integration of the equations of motion are reported in the paper. Finally, a new approximated solution obtained from the exact one is introduced in this paper. (C) 2014 IAA. Published by Elsevier Ltd. All rights reserved.
C1 [Ventura, Jacopo] Tech Univ Munich, Inst Astronaut, D-85748 Garching, Germany.
[Romano, Marcello] Naval Postgrad Sch, Mech & Aerosp Engn Dept, Monterey, CA USA.
RP Ventura, J (reprint author), Tech Univ Munich, Inst Astronaut, D-85748 Garching, Germany.
EM jacopo.ventura@tum.de; mromano@nps.edu
NR 20
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U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0094-5765
EI 1879-2030
J9 ACTA ASTRONAUT
JI Acta Astronaut.
PD NOV
PY 2014
VL 104
IS 1
SI SI
BP 324
EP 340
DI 10.1016/j.actaastro.2014.07.038
PG 17
WC Engineering, Aerospace
SC Engineering
GA AR8RH
UT WOS:000343841700032
ER
PT J
AU Welsh, MM
Federinko, SP
Burnett, DG
Gackstetter, GD
Boyko, EJ
Seelig, AD
Wells, TS
Hooper, TI
AF Welsh, Marleen M.
Federinko, Susan P.
Burnett, Daniel G.
Gackstetter, Gary D.
Boyko, Edward J.
Seelig, Amber D.
Wells, Timothy S.
Hooper, Tomoko I.
TI Deployment-Related Depression Screening, 2001-2008 Comparing Clinical
Versus Research Surveys
SO AMERICAN JOURNAL OF PREVENTIVE MEDICINE
LA English
DT Article
ID POSTTRAUMATIC-STRESS-DISORDER; MILITARY SERVICE MEMBERS; HEALTH-CARE
UTILIZATION; MILLENNIUM COHORT; US MILITARY; SMALLPOX VACCINATION;
COMBAT DEPLOYMENT; ENROLLMENT; IMPACT; AFGHANISTAN
AB Background: Potential adverse mental health effects of deployment, including depression, are an ongoing concern. Although a previous study assessed under-reporting of depression on post-deployment health assessments compared to anonymous surveys, those results were not examined at the individual level to identify demographic or military factors that may be associated with unwillingness to report depression symptoms.
Purpose: To compare self-reported depression symptoms on post-deployment health assessments with responses to the same depression questions on a research survey.
Methods: This cross-sectional study analyzed depression screening responses from 2001 to 2008 from participants of the Millennium Cohort Study, a longitudinal military cohort study, who completed a post-deployment health assessment within 30 days of a research survey. Kappa statistics and percent positive and negative agreement were calculated. Demographic and military characteristics associated with discordant screening results were examined. Initial analyses were performed in 2011, with additional analyses in 2013.
Results: Moderate agreement (kappa=0.464) was observed between paired survey responses. A higher proportion of active duty members, the unmarried, and new accessions into military service endorsed depression symptoms on the research survey but not the military-linked survey. In stratified analyses, agreement was higher in Reserve/National Guard members than active duty (kappa=0.561 vs 0.409). New active duty accessions showed lower agreement (kappa=0.388), as did unmarried active duty participants (kappa=0.304).
Conclusions: Deployment health surveys are important tools for identifying returning service members experiencing depression symptoms. However, these findings suggest that ongoing stigma and barriers to appropriate follow-up mental health care remain to be addressed in the military setting. (C) 2014 American Journal of Preventive Medicine. All rights reserved.
C1 [Welsh, Marleen M.; Federinko, Susan P.; Burnett, Daniel G.; Hooper, Tomoko I.] Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, Bethesda, MD 20814 USA.
[Gackstetter, Gary D.] Analyt Serv Inc, Falls Church, VA USA.
[Boyko, Edward J.] Vet Affairs Puget Sound Hlth Care Syst, Epidemiol Res & Informat Ctr, Seattle, WA USA.
[Seelig, Amber D.] Naval Hlth Res Ctr, Deployment Hlth Res Dept, San Diego, CA USA.
[Wells, Timothy S.] Optum, Ann Arbor, MI USA.
RP Welsh, MM (reprint author), Uniformed Serv Univ Hlth Sci, Dept Prevent Med & Biometr, Room A1040H,4301 Jones Bridge Rd, Bethesda, MD 20814 USA.
EM marleen.welsh.ctr@usuhs.edu
FU Management Information Division, U.S. Defense Manpower Data Center
(Seaside CA); Military Operational Medicine Research Program; U.S. Army
Medical Research and Materiel Command; Military Operational Medicine
Research Program, U.S. Army Medical Research and Materiel Command (Fort
Detrick MD)
FX We would like to thank the entire Millennium Cohort Study Team from the
Deployment Health Research Department, Naval Health Research Center, San
Diego CA, for their support, as well as the Millennium Cohort Study
co-investigators for their leadership. We are also indebted to the
Millennium Cohort Study participants, without whom these analyses would
not be possible. We appreciate the support from the Management
Information Division, U.S. Defense Manpower Data Center (Seaside CA),
Military Operational Medicine Research Program, and U.S. Army Medical
Research and Materiel Command.; The Millennium Cohort Study is funded
through the Military Operational Medicine Research Program, U.S. Army
Medical Research and Materiel Command (Fort Detrick MD). Resources from
the Veterans Affairs Puget Sound Health Care System supported Dr.
Boyko's involvement in this research.
NR 26
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Z9 2
U1 0
U2 3
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0749-3797
EI 1873-2607
J9 AM J PREV MED
JI Am. J. Prev. Med.
PD NOV
PY 2014
VL 47
IS 5
BP 531
EP 540
DI 10.1016/j.amepre.2014.07.036
PG 10
WC Public, Environmental & Occupational Health; Medicine, General &
Internal
SC Public, Environmental & Occupational Health; General & Internal Medicine
GA AR6DP
UT WOS:000343673800001
PM 25241198
ER
PT J
AU Smith, AN
Nochetto, H
AF Smith, Andrew N.
Nochetto, Horacio
TI Laminar thermally developing flow in rectangular channels and parallel
plates: uniform heat flux
SO HEAT AND MASS TRANSFER
LA English
DT Article
ID MICROCHANNELS
AB Numerical simulations were conducted for thermally developing laminar flow in rectangular channels with aspect ratios ranging from 1 to 100, and for parallel plates. The simulations were for laminar, thermally developing flow with H1 boundary conditions: uniform heat flux along the length of the channel and constant temperature around the perimeter. In the limit as the non-dimensional length, x* = x/(D (h) RePr), goes to zero, the Nusselt number is dependent on x* to the negative exponent m. As the non-dimensional length goes to infinity the Nusselt number approaches fully developed values that are independent of x*. General correlations for the local and mean heat transfer coefficients are presented that use an asymptotic blending function to transition between these limiting cases. The discrepancy between the correlation and the numerical results is less than 2.5 % for all aspect ratios. The correlations presented are applicable to all aspect ratios and all non-dimensional lengths, and decrease the discrepancy relative to existing correlations.
C1 [Smith, Andrew N.] US Naval Acad, Annapolis, MD 21146 USA.
[Smith, Andrew N.; Nochetto, Horacio] US Army Res Lab, Adelphi, MD 20783 USA.
RP Smith, AN (reprint author), US Naval Acad, 590 Holloway Rd, Annapolis, MD 21146 USA.
EM ansmith@usna.edu
FU U.S Army Research Laboratory
FX The authors would like to thank the U.S Army Research Laboratory for
their financial support and the members of the Power Components Branch
for their input and discussions. Contributions to this paper by Andrew
Smith were made while on sabbatical at the U. S. Army Research Lab,
Adelphi, MD.
NR 14
TC 3
Z9 3
U1 2
U2 6
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0947-7411
EI 1432-1181
J9 HEAT MASS TRANSFER
JI Heat Mass Transf.
PD NOV
PY 2014
VL 50
IS 11
BP 1627
EP 1637
DI 10.1007/s00231-014-1363-8
PG 11
WC Thermodynamics; Mechanics
SC Thermodynamics; Mechanics
GA AR7IW
UT WOS:000343753800013
ER
PT J
AU Johnson, WB
Skinner, CJ
Kaslow, NJ
AF Johnson, W. Brad
Skinner, Cessily J.
Kaslow, Nadine J.
TI Relational Mentoring in Clinical Supervision: The Transformational
Supervisor
SO JOURNAL OF CLINICAL PSYCHOLOGY
LA English
DT Article
ID COMPETENCE-BASED SUPERVISION; PROFESSIONAL PSYCHOLOGY; PERSPECTIVE;
MODEL
AB Effective clinical supervision naturally incorporates many elements of mentoring. In this article, we us the Mentoring Relationship Continuum (MRC) model to frame a discussion of transformational supervision. We define transformational supervision as a rich developmental relationship characterized by increasing relational reciprocity, a greater range of career and psychosocial mentoring functions, and a strong sense of collegiality. As a strong supervisory relationship approaches the transformational end of the MRC, the supervisor offers increasing levels of support, empowerment, authenticity, and reciprocity; over time, the relationship has a more interdependent, egalitarian, and communitarian character. We employ a case example to illustrate excellent transformational supervision.
C1 [Johnson, W. Brad; Skinner, Cessily J.] US Naval Acad, Annapolis, MD 21402 USA.
[Kaslow, Nadine J.] Emory Univ, Atlanta, GA 30322 USA.
RP Johnson, WB (reprint author), US Naval Acad, Dept Leadership Eth & Law, Luce Hall,Stop 7B, Annapolis, MD 21402 USA.
EM johnsonb@usna.edu
NR 25
TC 0
Z9 0
U1 4
U2 10
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0021-9762
EI 1097-4679
J9 J CLIN PSYCHOL
JI J. Clin. Psychol.
PD NOV
PY 2014
VL 70
IS 11
BP 1073
EP 1081
DI 10.1002/jclp.22128
PG 9
WC Psychology, Clinical
SC Psychology
GA AR9EN
UT WOS:000343875200006
PM 25220809
ER
PT J
AU Kumar, A
Balasubramaniam, M
Chakraborty, A
Crider, BP
Hicks, SF
Karthikraj, C
Kersting, LJ
Luke, CJ
Mcdonough, PJ
McEllistrem, MT
Peters, EE
Prados-Estevez, FM
Sigillito, AJ
Upadhyay, MM
Vanhoy, JR
Yates, SW
AF Kumar, A.
Balasubramaniam, M.
Chakraborty, A.
Crider, B. P.
Hicks, S. F.
Karthikraj, C.
Kersting, L. J.
Luke, C. J.
Mcdonough, P. J.
McEllistrem, M. T.
Peters, E. E.
Prados-Estevez, F. M.
Sigillito, A. J.
Upadhyay, M. M.
Vanhoy, J. R.
Yates, S. W.
TI A study of measured neutron elastic differential neutron cross sections
for Na-23
SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
LA English
DT Article
DE Neutron cross section; Time of flight; TALYS
AB Elastic neutron scattering angular distributions from Na-23 have been measured for incident neutron energies between 1.0 and 4.0 MeV at the University of Kentucky Accelerator Laboratory using neutron time-of-flight techniques for the scattered neutrons. This is an energy region in which existing data are very sparse. Measurements are compared with the predictions of the light particle-induced reaction code TALYS. The calculations reproduce forward angle scattering but have difficulty with relative minima in the differential cross section and large-angle scattering.
C1 [Kumar, A.; Upadhyay, M. M.] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India.
[Kumar, A.; Chakraborty, A.; McEllistrem, M. T.; Peters, E. E.; Prados-Estevez, F. M.; Yates, S. W.] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA.
[Kumar, A.; Chakraborty, A.; Crider, B. P.; Prados-Estevez, F. M.; Yates, S. W.] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA.
[Balasubramaniam, M.; Karthikraj, C.] Bharathiar Univ, Dept Phys, Coimbatore 641046, Tamil Nadu, India.
[Hicks, S. F.; Kersting, L. J.; Luke, C. J.; Mcdonough, P. J.; Sigillito, A. J.] Univ Dallas, Dept Phys, Irving, TX 75062 USA.
[Vanhoy, J. R.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA.
RP Kumar, A (reprint author), Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India.
EM atyagi44@yahoo.co.in
RI Sigillito, Anthony/N-5981-2015; Chandarasekaran, Karthikraj/L-3802-2013
OI Sigillito, Anthony/0000-0002-4765-9414; Chandarasekaran,
Karthikraj/0000-0002-2706-1060
FU UGC from UGC, Govt of India; Department of Science and Technology (DST),
Govt. of India [SR/FTP/PS-068/2010]; U.S. Department of Energy, Office
of Science, NEUP [NU-12-KY-UK-0201-05]; U.S. National Science Foundation
[PHY-0956310]; Cowan Physics Fund at the University of Dallas; Kinnear
Fellowship of the US Naval Academy
FX We acknowledge grants received through the UGC Networking scheme, from
UGC, Govt of India. AK also acknowledges the Department of Science and
Technology (DST), Govt. of India for financial support through
SR/FTP/PS-068/2010. In the United States, this materials is based upon
work supported in part by the U.S. Department of Energy, Office of
Science, NEUP under NU-12-KY-UK-0201-05, and the U.S. National Science
Foundation under PHY-0956310, the Cowan Physics Fund at the University
of Dallas, and the Kinnear Fellowship of the US Naval Academy. We
acknowledge with appreciation the many contributions of accelerator
engineer Harvey Baber.
NR 6
TC 0
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U1 0
U2 3
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0236-5731
EI 1588-2780
J9 J RADIOANAL NUCL CH
JI J. Radioanal. Nucl. Chem.
PD NOV
PY 2014
VL 302
IS 2
BP 1043
EP 1047
DI 10.1007/s10967-014-3535-x
PG 5
WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science &
Technology
SC Chemistry; Nuclear Science & Technology
GA AR9IT
UT WOS:000343888100045
ER
PT J
AU Martin-Horcajo, S
Wang, A
Romero, MF
Tadjer, MJ
Koehler, AD
Anderson, TJ
Calle, F
AF Martin-Horcajo, S.
Wang, A.
Romero, M. F.
Tadjer, M. J.
Koehler, A. D.
Anderson, T. J.
Calle, F.
TI Impact of device geometry at different ambient temperatures on the
self-heating of GaN-based HEMTs
SO SEMICONDUCTOR SCIENCE AND TECHNOLOGY
LA English
DT Article
DE GaN-based HEMTs; self-heating; gate width; gate length; distance between
gate and rain; channel temperature; thermal resistance
ID ALGAN/GAN HEMTS; CHANNEL TEMPERATURE; RAMAN-SPECTROSCOPY;
THERMAL-RESISTANCE; BIAS
AB The influence of the device geometry on the self-heating for GaN-based HEMTs was assessed at different ambient temperatures, from 25 degrees C to 175 degrees C. The results showed that the gate width can significantly affect the heat dissipation. In addition to this, the distribution of the generated heat in the channel has been demonstrated to be dependent on the distance between the gate and drain contacts. Besides the device geometry, the ambient temperature was also found to be relevant for the thermal resistance, mainly due to the temperature-dependent thermal conductivity of the layers and the substrate. The channel temperature and the thermal resistance extracted from the measurements were in good agreement with the simulations.
C1 [Martin-Horcajo, S.; Wang, A.; Romero, M. F.; Calle, F.] Univ Politecn Madrid, ETSI Telecomunicac, Dept Ingn Elect, E-28040 Madrid, Spain.
[Martin-Horcajo, S.; Wang, A.; Romero, M. F.; Calle, F.] Univ Politecn Madrid, ETSI Telecomunicac, Inst Sistemas Optoelect & Microtecnol, E-28040 Madrid, Spain.
[Tadjer, M. J.; Koehler, A. D.; Anderson, T. J.] US Navy, Res Lab, Washington, DC 20375 USA.
RP Martin-Horcajo, S (reprint author), Univ Politecn Madrid, ETSI Telecomunicac, Dept Ingn Elect, Av Complutense 30, E-28040 Madrid, Spain.
EM smartin@isom.upm.es
RI Romero, Fatima/F-7773-2016;
OI CALLE GOMEZ, FERNANDO/0000-0001-7869-6704
FU RUE from Ministerio de Ciencia e Innovacion of Spain [CSD2009-0046];
CAVE from Ministerio de Ciencia e Innovacion of Spain [TEC2012-38247];
PICATA program at the Moncloa Campus for International Excellence (CEI);
American Society for Engineering Education; Office of Naval Research
FX This work was partially supported by RUE (CSD2009-0046) and CAVE
(TEC2012-38247) projects, from Ministerio de Ciencia e Innovacion of
Spain. MJT acknowledges partial support from the PICATA program at the
Moncloa Campus for International Excellence (CEI), and partial support
from the American Society for Engineering Education. Research at NRL was
supported by the Office of Naval Research. The authors would like to
thank Dr T Brazzini and A Bosca for discussions and assistance.
NR 23
TC 2
Z9 2
U1 1
U2 12
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0268-1242
EI 1361-6641
J9 SEMICOND SCI TECH
JI Semicond. Sci. Technol.
PD NOV
PY 2014
VL 29
IS 11
AR 115013
DI 10.1088/0268-1242/29/11/115013
PG 9
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Condensed Matter
SC Engineering; Materials Science; Physics
GA AS0YS
UT WOS:000344003300016
ER
PT J
AU Crane, WM
Newman, JH
Romano, M
AF Crane, William M.
Newman, James H.
Romano, Marcello
TI Characterization of a shape memory alloy interference coupling
SO SMART MATERIALS AND STRUCTURES
LA English
DT Article
DE shape memory alloy; interference coupling; release mechanism
AB A versatile and heretofore unutilized coupling is obtained by press-fitting a hollow nickel titanium shape memory alloy (SMA) shaft into a steel hub. This produces an SMA interference coupling that is distinct from other SMA actuators by the method in which the SMA is used. Press-fitting the hollow SMA shaft in its detwinned martensitic phase into a steel hub creates a joint capable of holding parts such as emergency doors, satellite solar panels, or tamper locks securely together until commanded release. Release is accomplished by heating the SMA to its activation temperature. The resulting decrease in diameter of the hollow SMA shaft allows it to easily slip out of the hub, releasing the part. Load testing of the SMA interference coupling showed ultimate strengths about twice that of traditional press-fit coupling strength calculations. The coupling can be designed to be a simple mechanism of very small size, on the order of one cubic centimeter, capable of achieving coupling strengths in excess of 4000 N (900 lbf).
C1 [Crane, William M.] US Navy, Naval Test Wing Atlantic, Patuxent River, MD 20670 USA.
[Newman, James H.; Romano, Marcello] Naval Postgrad Sch, Space Syst Acad Grp, Monterey, CA 93943 USA.
[Romano, Marcello] Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
RP Crane, WM (reprint author), US Navy, Naval Test Wing Atlantic, NAVAIR 5-1D, Patuxent River, MD 20670 USA.
EM william.m.crane1@navy.mil; jhnewman@nps.edu; mromano@nps.edu
NR 10
TC 0
Z9 0
U1 1
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0964-1726
EI 1361-665X
J9 SMART MATER STRUCT
JI Smart Mater. Struct.
PD NOV
PY 2014
VL 23
IS 11
AR 115011
DI 10.1088/0964-1726/23/11/115011
PG 6
WC Instruments & Instrumentation; Materials Science, Multidisciplinary
SC Instruments & Instrumentation; Materials Science
GA AR9EH
UT WOS:000343874500011
ER
PT J
AU Friedman, AL
Perkins, FK
Cobas, E
Jernigan, GG
Campbell, PM
Hanbicki, AT
Jonker, BT
AF Friedman, Adam L.
Perkins, F. Keith
Cobas, Enrique
Jernigan, Glenn G.
Campbell, Paul M.
Hanbicki, Aubrey T.
Jonker, Berend T.
TI Chemical vapor sensing of two-dimensional MoS2 field effect transistor
devices
SO SOLID-STATE ELECTRONICS
LA English
DT Article; Proceedings Paper
CT International Semiconductor Device Research Symposium (ISDRS)
CY DEC 11-13, 2013
CL Bethesda, MD
DE Two-dimensional materials; MoS2; Chemical vapor sensing; Novel
semiconductors; Transition metal dichalcogenides; Field effect
transistors
ID LAYER MOS2; THIOPHENE HYDRODESULFURIZATION; MONOLAYER MOS2; LARGE-AREA;
BAND-GAP; GRAPHENE; GROWTH; PHOTOTRANSISTORS; HYDROGENATION; CONTACTS
AB MoS2, in single to few-layer format, is of interest because of its potential for advanced transistor and sensor applications. Its sizable bandgap enables single layer transistors with large on/off current ratios, and the large surface-to-volume ratio provides sensitive transduction of surface physisorption to the channel conductivity. Here, we discuss aspects of transistor device fabrication and of chemical vapor sensing experiments. We expose MoS2 chemical sensors to a variety of analytes, find the largest response to triethylamine, a nerve gas by-product, and explain our results based on a donor-acceptor model. We show that our MoS2 sensors provide comparable sensitivity and much higher selectivity than other low-dimensional sensors such as carbon nanotube and graphene chemical sensors. We present results for back-gated sensing and light sensitivity for our monolayer MoS2 sensors, and compare the results with multilayer MoS2 sensors. Published by Elsevier Ltd.
C1 [Friedman, Adam L.; Cobas, Enrique; Hanbicki, Aubrey T.; Jonker, Berend T.] US Naval Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
[Perkins, F. Keith; Jernigan, Glenn G.; Campbell, Paul M.] US Naval Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA.
RP Friedman, AL (reprint author), Code 6361 US Naval Res Lab,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM adam.friedman@nrl.navy.mil
RI Friedman, Adam/D-9610-2011
OI Friedman, Adam/0000-0003-0597-5432
NR 41
TC 11
Z9 11
U1 9
U2 108
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 NOV
PY 2014
VL 101
SI SI
BP 2
EP 7
DI 10.1016/j.sse.2014.06.013
PG 6
WC Engineering, Electrical & Electronic; Physics, Applied; Physics,
Condensed Matter
SC Engineering; Physics
GA AR8PX
UT WOS:000343838200002
ER
PT J
AU Gupta, S
LeBlanc, JM
Shukla, A
AF Gupta, Sachin
LeBlanc, James M.
Shukla, Arun
TI Mechanics of the implosion of cylindrical shells in a confining tube
SO INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
LA English
DT Article
DE Implosion; Implodable volume; Collapse; Pressure waves; Computational
modeling; Fluid structure interaction; Water hammer; Confined
environment
ID UNDERWATER IMPLOSIONS; PROPAGATION PRESSURE; PIPELINES; PIPES
AB A fundamental experimental investigation, with corresponding computational simulations, was conducted to understand the physical mechanisms of implosions of cylindrical shells occurring within a tubular confining space which has a limited potential energy reservoir. In particular, attention was focused on studying the generation of pressure waves from the implosion, the interaction of the pressure waves with the confining tube walls and end caps, and the collapse mechanisms of the implodable volume. Experiments were conducted with three implodable volume geometries which had similar critical collapse pressures. The implodable volumes were aluminum 6061-T6 cylindrical tubing and were placed concentrically within the confining tube. Pressure histories recorded along the length of the confining tube during the experiments were utilized to analytically evaluate the deformation of the implodable volume using fluid-structure coupled deformation models. Computational simulations were conducted using a coupled Eulerian-Lagrangian scheme to explicitly model the implosion process of the tubes along with the resulting compressible fluid flow. The numerical model developed in this study is shown to have high correlation with the experimental results and will serve as a predictive tool for the simulation of the implosion of different cylindrical geometries as well as various tube-in-tube implosion configurations. The experimental results show that the limited hydrostatic potential energy available in a confined environment, as compared to a free field, significantly influences the implosion process. The wall velocities of the implodable volume during the collapse, as well as the extent of the collapse progression, are largely affected by the sudden decrease in the available hydrostatic potential energy. This energy is shown to be partially transformed into elasto-plastic strain energy absorbed in the deformation of the implodable volume, as well as the kinetic energy of the water during the implosion process. Experiments also show that the extent of the collapse progression of an implodable volume can potentially be inhibited within a closed environment, which can lead to the arresting of an implosion event prior to completion for larger implodable volumes. The pressure waves generated during collapse comprise of waves emitted due to the impact of the implodable volume walls, the arrest of rushing water and contact propagation along the walls. These processes later evolve into water hammer type axial wave behavior. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Gupta, Sachin; Shukla, Arun] Univ Rhode Isl, Dynam Photo Mech Lab, Dept Mech Ind & Syst Engn, Kingston, RI 02881 USA.
[LeBlanc, James M.] Naval Undersea Warfare Ctr, Div Newport, Newport, RI 02841 USA.
RP Shukla, A (reprint author), Univ Rhode Isl, Dynam Photo Mech Lab, Dept Mech Ind & Syst Engn, Kingston, RI 02881 USA.
EM shuklaa@egr.uri.edu
FU Office of Naval Research Computational Mechanics Program
[N00014-12-1-0382, N0001412WX21206]
FX The authors kindly acknowledge the financial support provided by the
Office of Naval Research Computational Mechanics Program managed by Dr.
Stephen E. Turner under Grant No. N00014-12-1-0382 (URI) and
N0001412WX21206 (NUWC).
NR 36
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U1 1
U2 14
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0020-7683
EI 1879-2146
J9 INT J SOLIDS STRUCT
JI Int. J. Solids Struct.
PD NOV
PY 2014
VL 51
IS 23-24
BP 3996
EP 4014
DI 10.1016/j.ijsolstr.2014.07.022
PG 19
WC Mechanics
SC Mechanics
GA AR5KB
UT WOS:000343622600015
ER
PT J
AU Genin, GM
Rosenberg, SP
Seger, LM
Tran, EL
Rivet, DJ
Leuthardt, EC
AF Genin, Guy M.
Rosenberg, Stuart P.
Seger, Laura M.
Tran, Elizabeth L.
Rivet, Dennis J.
Leuthardt, Eric C.
TI The freedom to heal: nonrigid immobilization by a halo orthosis
SO JOURNAL OF NEUROSURGERY-SPINE
LA English
DT Article
DE halo orthosis; spinal immobilization; mechanical compliance; structural
characterization
ID CERVICAL-SPINE; VEST ORTHOSIS; NECK; APPARATUS; FORCES; MOTION; MODEL
AB Halo orthoses present a paradox. On the one hand, the nominally rigid immobilization they provide to the head aims to remove loads on the cervical spine following injury or surgery, and the devices are retightened routinely to maintain this. On the other hand, bone growth and remodeling are well known to require mechanical stressing. How are these competing needs balanced? To understand this trade-off in an effective, commercial halo orthosis, the authors quantified the response of a commercial halo orthosis to physiological loading levels, applied symmetrically about the sagittal plane. They showed for the first time that after a few cycles of loading analogous to a few steps taken by a patient, the support presented by a standard commercial halo orthosis becomes nonlinear. When analyzed through straightforward structural modeling, these data revealed that the nonlinearity permits mild head motion while severely restricting larger motion. These observations are useful because they open the possibility that halo orthosis installation could be optimized to transfer mild spinal loads that support healing while blocking pathological loads.
C1 [Genin, Guy M.; Leuthardt, Eric C.] Washington Univ, Dept Neurol Surg, Sch Med, St Louis, MO 63130 USA.
[Genin, Guy M.; Rosenberg, Stuart P.; Seger, Laura M.; Leuthardt, Eric C.] Washington Univ, Dept Mech Engn & Mat Sci, St Louis, MO 63130 USA.
[Rosenberg, Stuart P.; Seger, Laura M.; Tran, Elizabeth L.] Washington Univ, Dept Biomed Engn, St Louis, MO 63130 USA.
[Rivet, Dennis J.] Naval Med Ctr Portsmouth, Dept Neurosurg, Portsmouth, VA USA.
RP Genin, GM (reprint author), Washington Univ, Dept Neurol Surg, Campus Box 1185, St Louis, MO 63130 USA.
EM genin@wustl.edu
FU Johanna D. Bemis Trust; Washington University in St. Louis
FX This work was funded in part by the Johanna D. Bemis Trust and by
Washington University in St. Louis. The authors report no conflict of
interest concerning the materials or methods used in this study or the
findings specified in this paper.
NR 25
TC 0
Z9 0
U1 0
U2 2
PU AMER ASSOC NEUROLOGICAL SURGEONS
PI ROLLING MEADOWS
PA 5550 MEADOWBROOK DRIVE, ROLLING MEADOWS, IL 60008 USA
SN 1547-5654
EI 1547-5646
J9 J NEUROSURG-SPINE
JI J. Neurosurg.-Spine
PD NOV
PY 2014
VL 21
IS 5
BP 811
EP 816
DI 10.3171/2014.7.SPINE13747
PG 6
WC Clinical Neurology; Surgery
SC Neurosciences & Neurology; Surgery
GA AR4AI
UT WOS:000343530000019
PM 25147974
ER
PT J
AU Zhang, FJ
Zhu, H
Wu, YS
Dou, ZH
Zhang, Y
Kleinman, N
Bulterys, M
Wu, ZY
Ma, Y
Zhao, DC
Liu, X
Fang, H
Liu, J
Cai, WP
Shang, H
AF Zhang, Fujie
Zhu, Hao
Wu, Yasong
Dou, Zhihui
Zhang, Yao
Kleinman, Nora
Bulterys, Marc
Wu, Zunyou
Ma, Ye
Zhao, Decai
Liu, Xia
Fang, Hua
Liu, Jing
Cai, Wei-Ping
Shang, Hong
TI HIV, hepatitis B virus, and hepatitis C virus co-infection in patients
in the China National Free Antiretroviral Treatment Program, 2010-12: a
retrospective observational cohort study
SO LANCET INFECTIOUS DISEASES
LA English
DT Article
ID METHADONE-MAINTENANCE TREATMENT; HUMAN-IMMUNODEFICIENCY-VIRUS;
RESOURCE-LIMITED SETTINGS; SUB-SAHARAN AFRICA; INFECTED PATIENTS; GLOBAL
EPIDEMIOLOGY; MULTICENTER COHORT; VIRAL-HEPATITIS; PREGNANT-WOMEN;
THERAPY
AB Background Hepatitis-related liver diseases are a leading cause of mortality and morbidity among people with HIV/AIDS taking combination antiretroviral therapy. We assessed the effect of hepatitis B virus (HBV) and hepatitis C virus (HCV) co-infection on HIV outcomes in patients in China.
Methods We did a nationwide retrospective observational cohort study with data from the China National Free Antiretroviral Treatment Program from 2010-11. Patients older than 18 years starting standard antiretroviral therapy for HIV who had tested positive for HBV and HCV were followed up to Dec 31, 2012. We used Kaplan-Meier analysis and Cox proportional hazard models to evaluate survival, and logistic regression models to estimate virological failure, immunological response, and retention in care.
Findings 33 861 patients with HIV met eligibility criteria. 2958 (8.7%) participants had HBV co-infection, 6149 (18.2%) had HCV co-infection, and 1114 (3.3%) had triple infection. All-cause mortality was higher in participants with triple infection (adjusted hazard ratio 1.90, 95% CI 1.53-2.37) and HCV co-infection (1.46, 1.25-1.70) than in those with HIV only, but not in those with HBV co-infection (1.06, 0.89-1.26). People with triple infection were also more likely to have virological failure (adjusted odds ratio [OR] 1.26, 95% CI 1.02-1.56) than were those with HIV only, whereas the difference was not significant for those with HBV co-infection (0.93, 0.80-1.10) or HCV co-infection (1.10, 0.97-1.26). No co-infection was significantly associated with a difference in CD4 cell count after 1 year of treatment. Loss to follow-up was more common among participants with triple infection (OR 1-37, 95% CI 1.16-1.62) and HCV co-infection (1.30, 1.17-1.45), but not HBV co-infection (0.93, 0.82-1.05), than among those with HIV only.
Interpretation Screening for viral hepatitis is important in individuals diagnosed as HIV positive. Effective management for viral hepatitis should be integrated into HIV treatment programmes. Long-term data are needed about the effect of hepatitis co-infection on HIV disease progression.
C1 [Zhang, Fujie; Wu, Yasong; Dou, Zhihui; Zhang, Yao; Wu, Zunyou; Ma, Ye; Zhao, Decai; Liu, Xia; Fang, Hua] China Ctr Dis Control & Prevent, Natl Ctr AIDS STD Control & Prevent, Beijing, Peoples R China.
[Zhang, Fujie; Liu, Jing; Shang, Hong] China Med Univ, Affiliated Hosp 1, Liaoning, Peoples R China.
[Zhu, Hao; Kleinman, Nora; Bulterys, Marc] US Ctr Dis Control & Prevent, Global AIDS Program, China Off, Beijing, Peoples R China.
[Kleinman, Nora] Assoc Sch & Programs Publ Hlth, Washington, DC USA.
[Cai, Wei-Ping] Guang Zhou Eighth Peoples Hosp, Dept Infect Dis, Guangzhou, Guangdong, Peoples R China.
[Bulterys, Marc] Naval Hlth Res Ctr, Dept Def HIV AIDS Prevent Program, San Diego, CA USA.
RP Shang, H (reprint author), China Med Univ, Key Lab AIDS Immunol, Dept Lab Med, Minist Hlth,Affiliated Hosp 1, 155 Nanjing North St, Shenyang, Peoples R China.
EM hongshang100@hotmail.com
OI Kleinman, Nora/0000-0001-8203-2724
FU National Center for AIDS/STD Control and Prevention, China Center for
Disease Control and Prevention
FX The National Center for AIDS/STD Control and Prevention, China Center
for Disease Control and Prevention.
NR 48
TC 17
Z9 20
U1 3
U2 26
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1473-3099
EI 1474-4457
J9 LANCET INFECT DIS
JI Lancet Infect. Dis.
PD NOV
PY 2014
VL 14
IS 11
BP 1065
EP 1072
DI 10.1016/S1473-3099(14)70946-6
PG 8
WC Infectious Diseases
SC Infectious Diseases
GA AR7EZ
UT WOS:000343743700031
PM 25303841
ER
PT J
AU Prabhakar, G
Ervens, B
Wang, Z
Maudlin, LC
Coggon, MM
Jonsson, HH
Seinfeld, JH
Sorooshian, A
AF Prabhakar, Gouri
Ervens, B.
Wang, Z.
Maudlin, L. C.
Coggon, M. M.
Jonsson, H. H.
Seinfeld, J. H.
Sorooshian, A.
TI Sources of nitrate in stratocumulus cloud water: Airborne measurements
during the 2011 E-PEACE and 2013 NiCE studies
SO ATMOSPHERIC ENVIRONMENT
LA English
DT Article
DE Cloud water; Chloride depletion; Stratocumulus; Marine; Biomass burning;
Sea-salt
ID AEROSOL MASS-SPECTROMETER; MARINE AEROSOL; NITRIC-ACID; EMISSIONS;
FIELD; DEPLOYMENT; EFFICIENCY; CAMPAIGN; IMPACTS; INLET
AB This study examines the sources of NO3- in stratocumulus clouds over the eastern Pacific Ocean off the California coast using airborne and surface measurement data from the Eastern Pacific Emitted Aerosol Cloud Experiment (E-PEACE; 2011) and Nucleation in California Experiment (NiCE; 2013). Average NO3- air-equivalent concentrations in cloud water samples categorized as having been influenced by ship exhaust (2.5 mu g m(-3)), strong marine emissions (2.5 mu g m(-3)) and fires (2.0 mu g m(-3)) were more than twice that in the background cloud water (0.9 mu g m(-3)). During periods when biomass burning plumes resided above cloud top, 16 of 29 cloud water samples were impacted due to instability in the entrainment interface layer with NO3- levels reaching as high as 9.0 mu g m(-3). Nucleation scavenging of chloride depleted sea-salt is a source of cloud water NO3-, with the lowest Cl-:Na+ ratio (1.5) observed in ship-influenced samples. Surface aerosol measurements show that NOT concentrations peak in the particle diameter range of 1.0-5.6 mu m, similar to Na, Cl- and Si, suggesting that drop activation of crustal particles and sea salt could be an important source of NO3- in cloud water. The contrasting behavior of NOT and SO42- is emphasized by the NO3-:SO42- mass concentration ratio which is highest in cloud water (by more than a factor of two) followed by above cloud aerosol, droplet residual particles, and below cloud aerosol. Trends of a decreasing NO3-:SO42- ratio with altitude in clouds are confirmed by parcel model studies due to the higher rate of in-cloud sulfate formation as compared to HNO3 uptake by droplets. (C) 2014 Elsevier Ltd. All rights reserved.
C1 [Prabhakar, Gouri; Maudlin, L. C.; Sorooshian, A.] Univ Arizona, Dept Atmospher Sci, Tucson, AZ 85721 USA.
[Ervens, B.] Univ Colorado, CIRES, Boulder, CO 80309 USA.
[Ervens, B.] NOAA, ESRL CSD, Boulder, CO USA.
[Wang, Z.; Sorooshian, A.] Univ Arizona, Dept Chem & Environm Engn, Tucson, AZ USA.
[Coggon, M. M.; Seinfeld, J. H.] CALTECH, Dept Chem Engn, Pasadena, CA 91125 USA.
[Jonsson, H. H.] Naval Postgrad Sch, Monterey, CA USA.
RP Sorooshian, A (reprint author), Univ Arizona, Dept Atmospher Sci, Tucson, AZ 85721 USA.
EM armin@email.arizona.edu
RI Coggon, Matthew/I-8604-2016; Manager, CSD Publications/B-2789-2015;
OI Coggon, Matthew/0000-0002-5763-1925; Prabhakar,
Gouri/0000-0003-4578-8658; Sorooshian, Armin/0000-0002-2243-2264
FU Office of Naval Research [N00014-11-1-0783, N00014-10-1-0200,
N00014-10-1-0811]; National Science Foundation [AGS-1008848]; NOAA's
Climate Goal
FX This work was funded by Office of Naval Research grants
N00014-11-1-0783, N00014-10-1-0200, and N00014-10-1-0811, and National
Science Foundation grant AGS-1008848. We acknowledge Dean Hegg for
providing the cloud water collector. Barbara Ervens acknowledges support
from NOAA's Climate Goal.
NR 34
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U1 4
U2 22
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1352-2310
EI 1873-2844
J9 ATMOS ENVIRON
JI Atmos. Environ.
PD NOV
PY 2014
VL 97
SI SI
BP 166
EP 173
DI 10.1016/j.atmosenv.2014.08.019
PG 8
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA AR1HQ
UT WOS:000343336700020
ER
PT J
AU Sassi, F
Liu, HL
AF Sassi, Fabrizio
Liu, Han-Li
TI Westward traveling planetary wave events in the lower thermosphere
during solar minimum conditions simulated by SD-WACCM-X
SO JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
LA English
DT Article
DE Lower thermosphere dynamics; Sudden stratospheric warming;
Planetary-scale waves
ID MIDDLE ATMOSPHERE; SEASONAL-VARIATION; MODEL; MESOSPHERE; WARMINGS;
BREAKING; ASSIMILATION; TEMPERATURES; CIRCULATION; DYNAMICS
AB We present numerical simulations with the Whole Atmosphere Community Climate Model, eXtended version (WACCM-X), whose dynamics is constrained by atmospheric specifications during recent and historical solar minimum conditions. The focus of this study is to describe how various dynamical conditions of boreal winter affect the dynamical behavior of the lower thermosphere (90-150 km). The model simulations are carried out during solar minimum conditions and the results shown here discuss the period January 1-March 30 for five years (1995, 1996, 2008, 2009, and 2010). These years were selected because they include boreal winters without stratospheric warming (1995 and 1996), with modest or normal stratospheric warming (2008 and 2010), and with a large and persistent stratospheric warming (2009). The ultimate goal of this study is to encapsulate the statistically significant dynamical behavior due to westward propagating, planetary-scale waves (wavenumber 1 and wavenumber 2) in the lower thermosphere that are associated with different stratospheric conditions. To this end we show that the westward zonal acceleration above about 80 km is by and large described by traveling waves with periods between 2 and 10 days. We show that the momentum carried by these waves is unlikely to affect directly the momentum budget of the extra-tropical lower thermosphere, where instead gravity-wave drag figures prominently. However, at the times leading to and following large stratospheric disturbances, we show prominent meridional propagation of wave activity from the mid-latitudes toward the tropics. In combination with strong eastward meridional wind shear, our results provide further evidence that such equatorward propagation of momentum in the lower thermosphere might influence the amplitude of equatorially trapped tides. Published by Elsevier Ltd.
C1 [Sassi, Fabrizio] Div Space Sci, Naval Res Lab, Washington, DC 20375 USA.
[Liu, Han-Li] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80307 USA.
RP Sassi, F (reprint author), Div Space Sci, Naval Res Lab, Code 7631, Washington, DC 20375 USA.
EM fabrizio.sassi@nrl.navy.mil
RI Liu, Han-Li/A-9549-2008;
OI Liu, Han-Li/0000-0002-6370-0704; Sassi, Fabrizio/0000-0002-9492-7434
FU NASA/LWS [NNH12AT21I]; National Science Foundation (USA) [AGS-1138784];
NASA LWS [NNX09AJ83G, NNX13AE20G]; Office of Naval Research; U.S.
National Science Foundation; DOD High Performance Computing
Modernization Program at the US Navy DOD Supercomputing Resource Center
(NAVO) [NRLDC08695411]
FX The authors wish to thank S.D. Eckermann and J.P. McCormack at NRL, and
A. Maute at NCAR for comments and suggestions at different stages of
this effort. The comments and suggestions of two anonymous reviewers
helped improve the manuscript. FS and HL were partially supported by
NASA/LWS Grant NNH12AT21I. HL acknowledges support by National Science
Foundation (USA) Grant AGS-1138784 and NASA LWS Grants NNX09AJ83G and
NNX13AE20G. FS also acknowledges the support of 6.1 funding from the
Office of Naval Research. The National Center for Atmospheric Research
is sponsored by the U.S. National Science Foundation. This work was
supported in part by a grant of computer time from the DOD High
Performance Computing Modernization Program at the US Navy DOD
Supercomputing Resource Center (NAVO) (grant no. NRLDC08695411).
NR 47
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Z9 6
U1 0
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1364-6826
EI 1879-1824
J9 J ATMOS SOL-TERR PHY
JI J. Atmos. Sol.-Terr. Phys.
PD NOV
PY 2014
VL 119
BP 11
EP 26
DI 10.1016/j.jastp.2014.06.009
PG 16
WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
GA AQ6AQ
UT WOS:000342890100002
ER
PT J
AU Gannon, AJ
Hobson, GV
Hedges, CR
Descovich, GL
AF Gannon, Anthony J.
Hobson, Garth V.
Hedges, Collin R.
Descovich, Gregory L.
TI Investigation and Prediction of Steam-Induced Stall-Margin Reduction in
Two Transonic Rotor Fans
SO JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
LA English
DT Article
DE steam-induced stall; simulation; stall prediction; steam-air mixture
ID COMPRESSOR
AB An investigation into the behavior of two transonic compressor rotors operating at near-stall conditions while ingesting hot-steam was undertaken. This type of inlet flow was similar to that experienced by naval aircraft during steam catapult launches and has had the potential to adversely affect engine performance. The research was divided into three broad areas: experimental, theoretical and numerical. The first area, experimental, used the Naval Postgraduate School's transonic compressor rig. The rig was modified to introduce hot steam into the inlet flow during testing. Two rotor-only tests were completed; one with an unswept rotor and the other with a forward swept rotor. The experimental program yielded two sets of results. The first recorded data on the operational behavior of a transonic compressor ingesting a super-heated steam and air mixture, notably the quantification of the stall margin (SM) reduction. The second data set captured transient measurements of the inlet flow gas properties. The transient inlet data were then used in the second research area; a theoretical analysis based on a thermodynamic model of the inlet flow. Prior to this investigation, little information was available for higher temperature steam-air mixtures of this type. The analysis used certain simplifying assumptions to perform a fundamental of the inflow which yielded the inlet flow transient changes of specific heat capacities, gas constants, and, therefore, sonic velocities. Using these transient inlet properties, the third area of the investigation was performed, developing a numerical model. A fully transient simulation over the time period of an ingestion event would not be practical due to the large computational requirements needed. A quasi-transient method with large intermediate time steps was developed. The method is presented and was found to be reasonable at predicting the stall-margin reduction when compared to the available experimental results. These results would have potential use in design applications and for evaluating existing compressor steam ingestion tolerance.
C1 [Gannon, Anthony J.; Hobson, Garth V.; Hedges, Collin R.; Descovich, Gregory L.] Naval Postgrad Sch, MAE Dept, Monterey, CA 93943 USA.
RP Gannon, AJ (reprint author), Naval Postgrad Sch, MAE Dept, 700 Dyer Rd,RM 245, Monterey, CA 93943 USA.
EM ajgannon@nps.edu; gvhobson@nps.edu; crhedges@gmail.com;
gldescov@yahoo.com
RI Gannon, Anthony/E-9598-2017
OI Gannon, Anthony/0000-0002-4602-4396
NR 15
TC 0
Z9 0
U1 1
U2 6
PU ASME
PI NEW YORK
PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0098-2202
EI 1528-901X
J9 J FLUID ENG-T ASME
JI J. Fluids Eng.-Trans. ASME
PD NOV
PY 2014
VL 136
IS 11
AR 111101
DI 10.1115/1.4028318
PG 9
WC Engineering, Mechanical
SC Engineering
GA AQ6DH
UT WOS:000342898100001
ER
PT J
AU Lee, AM
Briandet, BM
Caranta, DG
Zelig, CM
AF Lee, Amy M.
Briandet, Benjamin M.
Caranta, Diane G.
Zelig, Craig M.
TI Adverse pregnancy outcomes in hypertensive patients: predictive value of
protein concentration versus total protein
SO JOURNAL OF MATERNAL-FETAL & NEONATAL MEDICINE
LA English
DT Article
DE Preeclampsia; proteinuria; twenty-four hour urine protein collection
ID PREECLAMPSIA; EXCRETION
AB Objectives: To compare the predictive value of protein concentration in a twenty-four hour urine collection to the conventional total protein in a twenty-four hour urine collection for adverse pregnancy outcomes in hypertensive patients.
Study design: Retrospective cohort study. Hypertensive patients >= 20 weeks estimated gestational age (EGA) who completed twenty-four hour urine protein collections were identified; antepartum and delivery data were examined. For study patients who met criteria for adverse pregnancy outcome, multi-variable analysis was performed and summary receiver operating characteristic (ROC) curves were generated for each model (total protein compared to protein concentration). The models were compared by analyzing the area under the curve (AUC).
Results: A total of 150 patients were analyzed. Mean gestational age at delivery was 36.7 weeks. Analysis of the ROC curves showed no significant difference between the models (AUCs of 0.668 versus 0.656, p = 0.715). Optimal thresholds were 299.2mg for total protein and 0.1 mg/ml for protein concentration.
Conclusion: A protein concentration of 0.1 mg/ml on a twenty-four hour urine collection appears equivalent to the traditional 300mg total protein. If confirmed by prospective studies, this finding would be clinically important in cases where collections fall short of the 300mg threshold but exceed the 0.1 mg/ml concentration.
C1 [Lee, Amy M.; Caranta, Diane G.; Zelig, Craig M.] Naval Med Ctr Portsmouth, Dept Obstet & Gynecol, Portsmouth, VA 23708 USA.
[Briandet, Benjamin M.] Old Dominion Univ, Dept Math & Stat, Norfolk, VA 23529 USA.
RP Lee, AM (reprint author), Naval Med Ctr Portsmouth, Dept Obstet & Gynecol, Portsmouth, VA 23708 USA.
EM amymilee@gmail.com
NR 8
TC 0
Z9 0
U1 0
U2 4
PU INFORMA HEALTHCARE
PI LONDON
PA TELEPHONE HOUSE, 69-77 PAUL STREET, LONDON EC2A 4LQ, ENGLAND
SN 1476-7058
EI 1476-4954
J9 J MATERN-FETAL NEO M
JI J. Matern.-Fetal Neonatal Med.
PD NOV
PY 2014
VL 27
IS 16
BP 1643
EP 1645
DI 10.3109/14767058.2014.889112
PG 3
WC Obstetrics & Gynecology
SC Obstetrics & Gynecology
GA AQ7WW
UT WOS:000343031000006
PM 24484078
ER
PT J
AU Chaloux, BL
Ricks-Laskoski, HL
Miller, JB
Saunders, KM
Hickner, MA
AF Chaloux, Brian L.
Ricks-Laskoski, Holly L.
Miller, Joel B.
Saunders, Kaitlin M.
Hickner, Michael A.
TI Probing Microphase Separation and Proton Transport Cooperativity in
Polymer-Tethered 1H-Tetrazoles
SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
LA English
DT Article
DE 1H-tetrazole; carboxylic acid; charge carrier density; microphase
separation; polyelectrolytes; proton conductor; proton mobility
ID SOLUBILITY PARAMETERS; CONDUCTING POLYMER; ACID-SOLUTIONS; FORMIC-ACID;
MEMBRANES; MORPHOLOGY; TETRAZOLES; IMPEDANCE; WATER; COPOLYMERS
AB To elucidate the driving forces for phase separation and proton conductivity in polystyrenic alkoxy 1H-tetrazole (PS-Tet), an analogous polystyrenic alkoxy carboxylic acid (PS-HA) was synthesized and the conductivity and chain dynamics of both materials measured. Proton and polymer motions illustrate dramatic differences in the nonaqueous behavior of carboxylic acids and 1H-tetrazoles, belying similarities in their aqueous properties. Exceptional interactions between 1H-tetrazoles drive phase separation not observed in PS-HA or reported for other azole-containing homopolymers. PS-HA and PS-Tet exhibit both dry (0% relative humidity) and hydrated proton dissociations proportional to their aqueous pK(a)s, with residual water acting as the proton acceptor in both polymers. While water is the sole contributor to mobility in PS-HA, PS-Tet exhibits dynamic interactions with water allowing 1H-tetrazole moieties to contribute to proton conduction even in the hydrated state. (c) 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 1375-1387
C1 [Chaloux, Brian L.; Ricks-Laskoski, Holly L.; Miller, Joel B.; Saunders, Kaitlin M.] Naval Res Lab, Div Chem, Mat Chem Branch 6120, Washington, DC 20375 USA.
[Hickner, Michael A.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
RP Ricks-Laskoski, HL (reprint author), Naval Res Lab, Div Chem, Mat Chem Branch 6120, Washington, DC 20375 USA.
EM holly.ricks-laskoski@nrl.navy.mil
FU Office of Naval Research; Naval Research Laboratory
FX The authors would like to thank the Office of Naval Research and the
Naval Research Laboratory for financial support of this project. The
authors would also like to thank Dr. J. Ross Mac-donald for insightful
discussions concerning impedance and dielectric analysis of conduction
in solid ionic conductors. Additionally, BLC would like to acknowledge
NRL's Student Temporary Employment and Pathways (STEP) Programs, and KMS
would like to acknowledge NRL's Science and Engineering Apprenticeship
Program.
NR 44
TC 1
Z9 1
U1 6
U2 19
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-6266
EI 1099-0488
J9 J POLYM SCI POL PHYS
JI J. Polym. Sci. Pt. B-Polym. Phys.
PD NOV 1
PY 2014
VL 52
IS 21
BP 1375
EP 1387
DI 10.1002/polb.23573
PG 13
WC Polymer Science
SC Polymer Science
GA AQ4CI
UT WOS:000342739400001
ER
PT J
AU Peng, MS
Peng, JY
Li, T
Hendricks, E
AF Peng, Melinda S.
Peng, Jiayi
Li, Tim
Hendricks, Eric
TI Effect of baroclinicity on vortex axisymmetrization. Part I: Barotropic
basic vortex
SO ADVANCES IN ATMOSPHERIC SCIENCES
LA English
DT Article
DE vortex axisymmetrization; asymmetry; baroclinicity
ID TROPICAL CYCLONE EVOLUTION; ROSSBY-WAVES; POTENTIAL VORTICITY;
NUMERICAL-MODEL; SPIRAL BANDS; CYCLOGENESIS; ASYMMETRIES; HURRICANES;
DEPENDENCE; BUDGETS
AB The barotropic and baroclinic disturbances axisymmetrized by the barotropic basic vortex are examined in an idealized modeling framework consisting of two layers. Using a Wentzel-Kramers-Brillouin approach, the radial propagation of a baroclinic disturbance is shown to be slower than a barotropic disturbance, resulting in a slower linear axisymmetrization for baroclinic disturbances. The slower-propagating baroclinic waves also cause more baroclinic asymmetric kinetic energy to be transferred directly to the barotropic symmetric vortex than from barotropic disturbances, resulting in a faster axisymmetrization process in the nonlinear baroclinic wave case than in the nonlinear barotropic wave case.
C1 [Peng, Melinda S.; Hendricks, Eric] Naval Res Lab, Monterey, CA USA.
[Peng, Jiayi] NOAA, IMSG, Environm Modeling Ctr, NCEP, College Pk, MD 20740 USA.
[Li, Tim] Univ Hawaii Manoa, Dept Met, Honolulu, HI 96822 USA.
[Li, Tim] Univ Hawaii Manoa, IPRC, Honolulu, HI 96822 USA.
RP Peng, JY (reprint author), NOAA, IMSG, Environm Modeling Ctr, NCEP, College Pk, MD 20740 USA.
EM jiayi.peng@noaa.gov
FU ONR [PE 0602435N, N000140310739]; Japan Agency for Marine-Earth Science
and Technology
FX This work was sponsored by ONR Grants PE 0602435N and N000140310739. The
International Pacific Research Center is partially supported by the
Japan Agency for Marine-Earth Science and Technology.
NR 18
TC 3
Z9 3
U1 1
U2 9
PU SCIENCE PRESS
PI BEIJING
PA 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
SN 0256-1530
EI 1861-9533
J9 ADV ATMOS SCI
JI Adv. Atmos. Sci.
PD NOV
PY 2014
VL 31
IS 6
BP 1256
EP 1266
DI 10.1007/s00376-014-3237-x
PG 11
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AP2MW
UT WOS:000341907500002
ER
PT J
AU Peng, JY
Peng, MS
Li, T
Hendricks, E
AF Peng, Jiayi
Peng, Melinda S.
Li, Tim
Hendricks, Eric
TI Effect of baroclinicity on vortex axisymmetrization. Part II: Baroclinic
basic vortex
SO ADVANCES IN ATMOSPHERIC SCIENCES
LA English
DT Article
DE vortex axisymmetrization; asymmetry; baroclinicity
ID TROPICAL CYCLONE EVOLUTION; ROSSBY-WAVES; POTENTIAL VORTICITY; DOPPLER
RADAR; MODEL; CYCLOGENESIS; DEPENDENCE; NUMBER
AB The effect of baroclinicity on vortex axisymmetrization is examined within a two-layer dynamical model. Three basic state vortices are constructed with varying degrees of baroclinicity: (i) barotropic, (ii) weak baroclinic, and (iii) strong baroclinic. The linear and nonlinear evolution of wavenumber-2 baroclinic disturbances are examined in each of the three basic state vortices. The results show that the radial propagating speed of the vortex Rossby wave at the lower level is larger with the stronger baroclinicity, resulting in a faster linear axisymmetrization process in the stronger baroclinic vortex.
It is found that the nonlinear axisymmetrization process takes the longest time in the strongest baroclinic vortex among the three different basic vortices due to the weaker kinetic energy transfer from asymmetric to symmetric circulations at the lower level. A major finding in this study is that the same initial asymmetric perturbation can have different effects on symmetric vortices depending on the initial vortex baroclinicity. In numerical weather prediction models, this implies that there exists a sensitivity of the subsequent structural and intensity change solely due to the specification of the initial vertical shear of the tropical cyclone vortex.
C1 [Peng, Jiayi] NOAA, IMSG, Environm Modeling Ctr, NCEP, College Pk, MD 20740 USA.
[Peng, Melinda S.; Hendricks, Eric] Naval Res Lab, Monterey, CA USA.
[Li, Tim] Univ Hawaii Manoa, Dept Met, Honolulu, HI 96822 USA.
[Li, Tim] Univ Hawaii Manoa, IPRC, Honolulu, HI 96822 USA.
RP Peng, JY (reprint author), NOAA, IMSG, Environm Modeling Ctr, NCEP, College Pk, MD 20740 USA.
EM jiayi.peng@noaa.gov
FU ONR [N000140310739, PE 0602435N]; Japan Agency for Marine-Earth Science
and Technology (JAMSTEC)
FX This work was supported by ONR Grants N000140310739 and PE 0602435N. The
International Pacific Research Center is partially sponsored by the
Japan Agency for Marine-Earth Science and Technology (JAMSTEC).
NR 14
TC 3
Z9 3
U1 0
U2 6
PU SCIENCE PRESS
PI BEIJING
PA 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
SN 0256-1530
EI 1861-9533
J9 ADV ATMOS SCI
JI Adv. Atmos. Sci.
PD NOV
PY 2014
VL 31
IS 6
BP 1267
EP 1278
DI 10.1007/s00376-014-3238-9
PG 12
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AP2MW
UT WOS:000341907500003
ER
PT J
AU Webb, DF
Bisi, MM
de Koning, CA
Farrugia, CJ
Jackson, BV
Jian, LK
Lugaz, N
Marubashi, K
Mostl, C
Romashets, EP
Wood, BE
Yu, HS
AF Webb, D. F.
Bisi, M. M.
de Koning, C. A.
Farrugia, C. J.
Jackson, B. V.
Jian, L. K.
Lugaz, N.
Marubashi, K.
Moestl, C.
Romashets, E. P.
Wood, B. E.
Yu, H. -S.
TI An Ensemble Study of a January 2010 Coronal Mass Ejection (CME):
Connecting a Non-obvious Solar Source with Its ICME/Magnetic Cloud
SO SOLAR PHYSICS
LA English
DT Article
ID MAGNETIC-FLUX ROPE; EMPIRICAL RECONSTRUCTION; STEREO MISSION;
CONSTANT-ALPHA; SOHO MISSION; IMAGER SMEI; WIND; MODEL; EARTH; LASCO
AB A distinct magnetic cloud (MC) was observed in-situ at the Solar TErrestrial RElations Observatory (STEREO)-B on 20 -aEuro parts per thousand 21 January 2010. About three days earlier, on 17 January, a bright flare and coronal mass ejection (CME) were clearly observed by STEREO-B, which suggests that this was the progenitor of the MC. However, the in-situ speed of the event, several earlier weaker events, heliospheric imaging, and a longitude mismatch with the STEREO-B spacecraft made this interpretation unlikely. We searched for other possible solar eruptions that could have caused the MC and found a faint filament eruption and the associated CME on 14 -aEuro parts per thousand 15 January as the likely solar source event. We were able to confirm this source by using coronal imaging from the Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI)/EUVI and COR and Solar and Heliospheric Observatory (SOHO)/Large Angle and Spectrometric Coronograph (LASCO) telescopes and heliospheric imaging from the Solar Mass Ejection Imager (SMEI) and the STEREO/Heliospheric Imager instruments. We use several empirical models to understand the three-dimensional geometry and propagation of the CME, analyze the in-situ characteristics of the associated ICME, and investigate the characteristics of the MC by comparing four independent flux-rope model fits with the launch observations and magnetic-field orientations. The geometry and orientations of the CME from the heliospheric-density reconstructions and the in-situ modeling are remarkably consistent. Lastly, this event demonstrates that a careful analysis of all aspects of the development and evolution of a CME is necessary to correctly identify the solar counterpart of an ICME/MC.
C1 [Webb, D. F.] Boston Coll, ISR, Chestnut Hill, MA 02167 USA.
[Bisi, M. M.] Rutherford Appleton Lab, RAL Space Sci & Technol Facil Council, Oxford, England.
[de Koning, C. A.] NOAA, Space Weather Predict Ctr, Boulder, CO USA.
[de Koning, C. A.] Univ Colorado, CIRES, Boulder, CO 80309 USA.
[Farrugia, C. J.; Lugaz, N.] Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.
[Farrugia, C. J.; Lugaz, N.] Univ New Hampshire, Dept Phys, Durham, NH 03824 USA.
[Jackson, B. V.; Yu, H. -S.] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA.
[Jian, L. K.] NASA, Goddard Space Flight Ctr, Heliophys Sci Div, Greenbelt, MD 20771 USA.
[Jian, L. K.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[Marubashi, K.] Korea Astron & Space Sci Inst, Taejon, South Korea.
[Moestl, C.] Graz Univ, Inst Phys, A-8010 Graz, Austria.
[Moestl, C.] Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria.
[Romashets, E. P.] Lone Star Coll, Houston, TX USA.
[Wood, B. E.] Naval Res Lab, Div Space Sci, Washington, DC USA.
RP Webb, DF (reprint author), Boston Coll, ISR, Chestnut Hill, MA 02167 USA.
EM david.webb@bc.edu
RI Lugaz, Noe/C-1284-2008; Jian, Lan/B-4053-2010
OI Lugaz, Noe/0000-0002-1890-6156; Jian, Lan/0000-0002-6849-5527
FU Air Force at Boston College [AF19628-00-K-0073, FA8718-04-C-0006]; Navy
contracts [N00173-07-1-G016, N00173-10-1-G001]; European Union [263252];
Marie Curie International Outgoing Fellowship within the 7th European
Community Framework Programme; UCSD NSF [AG-S-1053766, ATM-0925023];
NASA [NNX11AB50G, NNX13AP39G, NAS5-00132]; AFOSR [11NE043]; NSF
[AG-S-1242798, AG-S-1140211]; NASA's Science Mission Directorate as part
of the STEREO project; STFC; NASA TRT grant [NNX09AJ84G]
FX We thank the Institute of Physics, University of Graz, Austria for
hosting a workshop on this event in March 2011. We are grateful to the
STEREO/SECCHI PI, Russell Howard, the STEREO/PLASTIC PI, Antoine Galvin,
and the STEREO/IMPACT PI, Janet Luhmann, for the use of data and
analyses from these instrument suites. We thank Gemma Attrill, John
Clover, Timothy Howard, Nariaki Nitta, Dusan Odstrcil, S. James Tappin,
and Marek Vandas for their analysis efforts on these events during the
January 2010 period. The SMEI instrument is a collaborative project of
the US Air Force Research Laboratory, NASA, the University of California
at San Diego, the University of Birmingham, UK, Boston College, and
Boston University. The STEREO/SECCHI Heliospheric Imager (HI) instrument
was developed by a collaboration that included the Rutherford Appleton
Laboratory and the University of Birmingham, both in the United Kingdom,
the Centre Spatial de Liege (CSL), Belgium, and the US Naval Research
Laboratory (NRL), Washington DC, USA. The SECCHI project is an
international consortium of the Naval Research Laboratory, Lockheed
Martin Solar and Astrophysics Lab, NASA Goddard Space Flight Center,
Rutherford Appleton Laboratory, University of Birmingham,
Max-Planck-Institut fur Sonnensystemforschung, Centre Spatial de Liege,
Institut d'Optique Theorique et Appliquee, and Institut d'Astrophysique
Spatiale. We also benefitted from data from the SOHO mission, which is
an international collaboration between and ESA and NASA, and also from
the SOHO/LASCO CME catalog, generated and maintained by the Center for
Solar Physics and Space Weather, The Catholic University of America in
cooperation with NRL and NASA. The work of DFW was supported at Boston
College by Air Force contracts AF19628-00-K-0073 and FA8718-04-C-0006
and Navy contracts N00173-07-1-G016 and N00173-10-1-G001. The work of CM
was supported by the European Union Seventh Framework Programme
(FP7/2007-2013) under grant agreement no. 263252 (COMESEP), and by a
Marie Curie International Outgoing Fellowship within the 7th European
Community Framework Programme. BVJ and H-SY were supported by UCSD NSF
grant and AG-S-1053766, NASA grant NNX11AB50G, and AFOSR grant 11NE043.
LKJ was supported by NSF grant AG-S-1242798 and by NASA's Science
Mission Directorate as part of the STEREO project, including the IMPACT
and PLASTIC investigations. MMB acknowledges support on these analyses
initially from UCSD NSF grant ATM-0925023, and also from STFC funding to
RAL Space at The Rutherford Appleton Laboratory. CJF was supported by
NASA grant NNX13AP39G and NSF grant AG-S-1140211. Part of this work was
supported by NASA (NAS5-00132) for STEREO/PLASTIC at UNH. CADK was
supported by NASA TR&T grant NNX09AJ84G.
NR 84
TC 2
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U1 0
U2 11
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0038-0938
EI 1573-093X
J9 SOL PHYS
JI Sol. Phys.
PD NOV
PY 2014
VL 289
IS 11
BP 4173
EP 4208
DI 10.1007/s11207-014-0571-1
PG 36
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AO6YW
UT WOS:000341499800010
ER
PT J
AU Ionescu, M
Rogers, LG
AF Ionescu, Marius
Rogers, Luke G.
TI COMPLEX POWERS OF THE LAPLACIAN ON AFFINE NESTED FRACTALS AS
CALDERON-ZYGMUND OPERATORS
SO COMMUNICATIONS ON PURE AND APPLIED ANALYSIS
LA English
DT Article
DE Analysis on fractals; Calderon-Zygmund operators; Riesz potentials;
Bessel potentials
ID SELF-SIMILAR FRACTALS; SIERPINSKI GASKET; SPECTRAL MULTIPLIERS;
DIFFUSION-PROCESSES; KERNEL; SPACES
AB We give the first natural examples of Calderon-Zygmund operators in the theory of analysis on post-critically finite self-similar fractals. This is achieved by showing that the purely imaginary Riesz and Bessel potentials on nested fractals with 3 or more boundary points are of this type. It follows that these operators are bounded on L-p, 1 < p < infinity and satisfy weak 1-1 bounds. The analysis may be extended to in finite blow-ups of these fractals, and to product spaces based on the fractal or its blow-up.
C1 [Ionescu, Marius] US Naval Acad, Dept Math, Annapolis, MD 21402 USA.
[Rogers, Luke G.] Univ Connecticut, Dept Math, Storrs, CT 06269 USA.
RP Ionescu, M (reprint author), US Naval Acad, Dept Math, Annapolis, MD 21402 USA.
EM felijohn@gmail.com; rogers@math.uconn.edu
FU Simons Foundation [209277]
FX This research was partially supported by a grant from the Simons
Foundation (#209277 to Marius Ionescu).
NR 32
TC 2
Z9 2
U1 0
U2 1
PU AMER INST MATHEMATICAL SCIENCES
PI SPRINGFIELD
PA PO BOX 2604, SPRINGFIELD, MO 65801-2604 USA
SN 1534-0392
EI 1553-5258
J9 COMMUN PUR APPL ANAL
JI Commun. Pure Appl. Anal
PD NOV
PY 2014
VL 13
IS 6
BP 2155
EP 2175
DI 10.3934/cpaa.2014.13.2155
PG 21
WC Mathematics, Applied; Mathematics
SC Mathematics
GA AO0QP
UT WOS:000341016400002
ER
PT J
AU Sengers, JV
Wang, YYL
Kamgar-Parsi, B
Dorfman, JR
AF Sengers, J. V.
Wang, Y. -Y. Lin
Kamgar-Parsi, B.
Dorfman, J. R.
TI Kinetic theory of drag on objects in nearly free molecular flow
SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
LA English
DT Article
DE Kinetic theory; Drag coefficient; Inverse-Knudsen-number expansion;
Nearly free molecular flow; Speed ratio
ID BINARY-COLLISION OPERATORS; HYDRODYNAMIC FLOWS; TRANSPORT-COEFFICIENTS;
DENSITY EXPANSION; HARD-SPHERES; GAS; CONTINUUM; CYLINDER
AB Using an analogy between the density expansion of the transport coefficients of moderately dense gases and the inverse-Knudsen-number expansion of the drag on objects in nearly free molecular flows, we formulate the collision integrals that determine the first correction term to the free-molecular drag limit. We then show how the procedure can be applied to calculate the drag coefficients of an oriented disc and a sphere as a function of the speed ratio. (C) 2014 Elsevier B.V. All rights reserved.
C1 [Sengers, J. V.; Dorfman, J. R.] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA.
[Wang, Y. -Y. Lin] Natl Taiwan Normal Univ, Dept Phys, Taipei 116, Taiwan.
[Kamgar-Parsi, B.] Off Naval Res, Math Comp & Informat Res Div, Arlington, VA 22203 USA.
RP Sengers, JV (reprint author), Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA.
EM sengers@umd.edu
NR 39
TC 2
Z9 2
U1 1
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-4371
EI 1873-2119
J9 PHYSICA A
JI Physica A
PD NOV 1
PY 2014
VL 413
BP 409
EP 425
DI 10.1016/j.physa.2014.06.026
PG 17
WC Physics, Multidisciplinary
SC Physics
GA AO0CW
UT WOS:000340977700044
ER
PT J
AU Chen, KS
Tsang, L
Chen, KL
Liao, TH
Lee, JS
AF Chen, Kun-Shan
Tsang, Leung
Chen, Kuan-Liang
Liao, Tien Hao
Lee, Jong-Sen
TI Polarimetric Simulations of SAR at L-Band Over Bare Soil Using
Scattering Matrices of Random Rough Surfaces From Numerical
Three-Dimensional Solutions of Maxwell Equations
SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
LA English
DT Article
DE Coherent target decomposition; numerical simulation; polarimetric
synthetic aperture radar
ID DECOMPOSITION; MOISTURE; MODEL; PARAMETERS; INVERSION; EMISSION
AB We have performed simulations of random rough surface scattering using 3-D numerical solution of Maxwell equations (NMM3D) using surface size up to 32 x 32 squared wavelengths. The rough surfaces are characterized by exponential correlation functions. The simulation results of cross-and copolarization backscattering coefficients were in good agreement with experimental measurements of bare soils at L-band. Because in numerical solutions of Maxwell equations the electric fields of the scattered wave are calculated for each realization, scattering matrices can be simulated by NMM3D, and such simulations are performed in this paper. For a given RMS height, correlation length, soil permittivity, and incident angle, we calculated the radar scattering matrix up to 958 independent realizations. For each realization, the components of the scattering matrix, namely, S-HH, S-VV, S-HV, and S-VH, are calculated. Using the simulated scattering matrices, we calculate the polarimetric speckle statistics (amplitude and phase difference), followed by a comparison with theoretical distributions. For fully developed speckle from the homogeneous rough surface, the results are examined and validated to ensure the simulated data quality as far as polarimetric properties are concerned. By taking ensemble averages, we calculate the coherency matrix from which the eigenvalues, entropy, anisotropy, and alpha angle in coherent target decomposition are then calculated. In particular, characterization of polarimetric descriptors for rough surface is presented. Issues of scattering symmetry characteristics are also discussed.
C1 [Chen, Kun-Shan; Chen, Kuan-Liang] Natl Cent Univ, Inst Space Sci, Jhongli 320, Taiwan.
[Tsang, Leung; Liao, Tien Hao] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA.
[Lee, Jong-Sen] Naval Res Lab, Washington, DC 20375 USA.
RP Chen, KS (reprint author), Natl Cent Univ, Inst Space Sci, Jhongli 320, Taiwan.
FU Asian Office of Aerospace Research and Development [FA2386-13-1-4017];
National Science Council of Taiwan
FX This work was supported in part by the Asian Office of Aerospace
Research and Development under Grant FA2386-13-1-4017, by the National
Science Council of Taiwan for the sabbatical appointment of L. Tsang,
and by the National Aeronautics and Space Administration Soil Moisture
Active/Passive project.
NR 28
TC 7
Z9 7
U1 0
U2 33
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0196-2892
EI 1558-0644
J9 IEEE T GEOSCI REMOTE
JI IEEE Trans. Geosci. Remote Sensing
PD NOV
PY 2014
VL 52
IS 11
BP 7048
EP 7058
DI 10.1109/TGRS.2014.2306922
PG 11
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
& Photographic Technology
GA AN0MN
UT WOS:000340278800023
ER
PT J
AU Hagen, RA
Peters, MF
Liang, RT
Ball, DG
Brozena, JM
AF Hagen, Rick A.
Peters, Mary F.
Liang, Robert T.
Ball, David G.
Brozena, John M.
TI Measuring Arctic Sea Ice Motion in Real Time With Photogrammetry
SO IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
LA English
DT Article
DE Arctic regions; ice; image matching; image motion analysis; image
registration
AB The U.S. Naval Research Laboratory (NRL) has been collecting sea ice data in the Arctic, off the northern coast of Alaska, with an airborne system employing a radar altimeter, lidar, and a photogrammetric camera in an effort to obtain wide swaths of measurements coincident with CryoSat-2 track footprints. Because the satellite tracks traverse regions of moving pack ice, and the aircraft speed and measurement footprint are smaller than that of the satellite, it is necessary to know the local ice motion in order to plan and fly a full-coverage survey. With the advent of functional and real-time orthographic photogrammetric systems, we have developed a Real-Time Ice Motion Estimation (RTIME) system that permits the rapid determination of sea ice motion. RTIME enables tracking of specific patches of ice, allowing direct comparison of airborne data to satellite data on a point-by-point basis. This system should be of utility to other Arctic airborne science programs.
C1 [Hagen, Rick A.; Peters, Mary F.; Liang, Robert T.; Brozena, John M.] Naval Res Lab, Marine Phys Branch, Washington, DC 20375 USA.
[Ball, David G.] Exelis Inc, Alexandria, VA 22303 USA.
RP Hagen, RA (reprint author), Naval Res Lab, Marine Phys Branch, Washington, DC 20375 USA.
EM rick.hagen@nrl.navy.mil; mary.peters@nrl.navy.mil;
robert.liang@nrl.navy.mil; David.Ball.ctr@nrl.navy.mil;
john.brozena@nrl.navy.mil
FU Office of Naval Research through the "Determining the Impact of Sea Ice
Thickness" 6.1 Program [PE 61153N]
FX This work was supported by the Office of Naval Research through the
"Determining the Impact of Sea Ice Thickness" 6.1 Program under Grant PE
61153N.
NR 8
TC 1
Z9 1
U1 1
U2 43
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1545-598X
EI 1558-0571
J9 IEEE GEOSCI REMOTE S
JI IEEE Geosci. Remote Sens. Lett.
PD NOV
PY 2014
VL 11
IS 11
BP 1956
EP 1960
DI 10.1109/LGRS.2014.2314958
PG 5
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
& Photographic Technology
GA AI9SV
UT WOS:000337277500021
ER
PT J
AU Shu, IW
Onton, JA
O'Connell, RM
Simmons, AN
Matthews, SC
AF Shu, I-Wei
Onton, Julie A.
O'Connell, Ryan M.
Simmons, Alan N.
Matthews, Scott C.
TI Combat veterans with comorbid PTSD and mild TBI exhibit a greater
inhibitory processing ERP from the dorsal anterior cingulate cortex
SO PSYCHIATRY RESEARCH-NEUROIMAGING
LA English
DT Article
DE N200; P300; Conflict monitoring; Response inhibition; Biomarker
ID TRAUMATIC BRAIN-INJURY; POSTTRAUMATIC-STRESS-DISORDER; EVENT-RELATED
POTENTIALS; DEFAULT-MODE NETWORK; RESPONSE-INHIBITION; COGNITIVE
CONTROL; CONCUSSED INDIVIDUALS; CONFLICT ADAPTATION; FUNCTIONAL
NETWORKS; HEAD-INJURY
AB Posttraumatic stress disorder (PTSD) is common among combat personnel with mild traumatic brain injury (mTBI). While patients with either PTSD or mTBI share abnormal activation of multiple frontal brain areas, anterior cingulate cortex (ACC) activity during inhibitory processing may be particularly affected by PTSD. To further test this hypothesis, we recorded electroencephalography from 32 combat veterans with mTBI-17 of whom were also comorbid for PTSD (mTBI+PTSD) and 15 without PTSD (mTBI-only). Subjects performed the Stop Task, a validated inhibitory control task requiring inhibition of initiated motor responses. We observed a larger inhibitory processing eventrelated potential (ERP) in veterans with mTBI+PTSD, including greater N200 negativity. Furthermore, greater N200 negativity correlated with greater PTSD severity. This correlation was most dependent on contributions from the dorsal ACC. Support vector machine analysis demonstrated that N200 and P300 amplitudes objectively classified veterans into mTBI-only or mTBI+PTSD groups with 79.4% accuracy. Our results support a model where, in combat veterans with mTBI, larger ERPs from cingulate areas are associated with greater PTSD severity and likely related to difficulty controlling ongoing brain processes, including trauma-related thoughts and feelings. Published by Elsevier Ireland Ltd.
C1 [Shu, I-Wei; Matthews, Scott C.] VISN22 Mental Illness, Res Educ & Clin Ctr, San Diego, CA 92161 USA.
[Shu, I-Wei; O'Connell, Ryan M.; Simmons, Alan N.; Matthews, Scott C.] Vet Affairs San Diego Healthcare Syst, San Diego, CA 92161 USA.
[O'Connell, Ryan M.; Matthews, Scott C.] Univ Calif San Diego, Dept Psychiat, La Jolla, CA 92037 USA.
[Simmons, Alan N.; Matthews, Scott C.] Vet Affairs San Diego Healthcare Syst, Ctr Excellence Stress & Mental Hlth, San Diego, CA 92161 USA.
[Onton, Julie A.] Naval Hlth Res Ctr, San Diego, CA 92106 USA.
[Onton, Julie A.] Univ Calif San Diego, Inst Neural Computat, La Jolla, CA 92093 USA.
RP Shu, IW (reprint author), Vet Affairs San Diego Healthcare Syst, 3350 La Jolla Village Dr,116A, San Diego, CA 92161 USA.
EM ishu@ucsd.edu
FU BUMED under Work Unit 61032; VA Mental Illness Research, Education and
Clinical Center; VA Office of Academic Affiliations; VA Advanced
Fellowship Program in Mental Illness Research Treatment; VA Center of
Excellence for Stress and Mental Health; University of California San
Diego Academic Senate; U.S. Department of Veterans Affairs;
Congressionally Directed Medical Research Programs; CDA-2 Award from the
VA CSRD
FX This work represents Report No. 13-xx and is supported by BUMED under
Work Unit 61032. The views expressed in this article are those of the
authors and do not reflect the official policy or position of the
Department of the Navy, Department of Defense, or the U.S. Government.
Approved for public release; distribution is unlimited. This research
has been conducted in compliance with all applicable federal regulations
governing the protection of human subjects in research (Protocols
NHRC.2010.0022 and NHRC.2010.0023).; The authors are grateful to Elena
Kosheleva and Jenny Marks for their contributions to this research,
which was supported by the VA Mental Illness Research, Education and
Clinical Center, VA Office of Academic Affiliations, VA Advanced
Fellowship Program in Mental Illness Research Treatment, VA Center of
Excellence for Stress and Mental Health, and by grants from the
University of California San Diego Academic Senate, U.S. Department of
Veterans Affairs, and the Congressionally Directed Medical Research
Programs. Dr. Matthews is supported by a CDA-2 Award from the VA CSR&D.
NR 66
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U1 3
U2 29
PU ELSEVIER IRELAND LTD
PI CLARE
PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000,
IRELAND
SN 0925-4927
EI 1872-7506
J9 PSYCHIAT RES-NEUROIM
JI Psychiatry Res. Neuroimaging
PD OCT 30
PY 2014
VL 224
IS 1
BP 58
EP 66
DI 10.1016/j.pscychresns.2014.07.010
PG 9
WC Clinical Neurology; Neuroimaging; Psychiatry
SC Neurosciences & Neurology; Psychiatry
GA AQ0MW
UT WOS:000342478400009
PM 25150386
ER
PT J
AU Hysell, DL
Munk, J
McCarrick, M
AF Hysell, D. L.
Munk, J.
McCarrick, M.
TI Sporadic E ionization layers observed with radar imaging and ionospheric
modification
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
DE sporadic E; ionospheric modification
ID FIELD-ALIGNED IRREGULARITIES; INCOHERENT-SCATTER RADAR; MID-LATITUDE;
MU-RADAR; INSTABILITY; SHEAR; MODULATION; RESONANCE; DIRECTION; PLASMA
AB Sporadic E ionization layers have been observed in the daytime subauroral ionospheric E layer by a 30 MHz radar in Alaska. The radar detects coherent backscatter from meter-scale field-aligned plasma density irregularities. The irregularities were generated by ionospheric modificationby the emission of strong HF electromagnetic waves directly beneath the layersmaking the layers visible to the radar. Aperture-synthesis methods are used to generate imagery of the layers from the radar data. The layers are patchy, with patches organized along fronts spaced by tens of kilometers and propagating slowly toward the southwest. Similar, naturally occurring layers are commonly observed at middle latitudes at night in the absence of ionospheric modification. That the patchy layers can be found at high magnetic latitudes during the day argues that they are most likely produced through the interaction of the ionospheric layer with neutral atmospheric waves and instabilities. Attenuation of the radar echoes when the HF emission frequency exceeded the third harmonic of the electron gyrofrequency was observed and is discussed.
C1 [Hysell, D. L.] Cornell Univ, Ithaca, NY 14850 USA.
[Munk, J.] Univ Alaska Anchorage, Anchorage, AK USA.
[McCarrick, M.] Naval Res Lab, Washington, DC USA.
RP Hysell, DL (reprint author), Cornell Univ, Ithaca, NY 14850 USA.
EM david.hysell@cornell.edu
FU National Science Foundation [AGS-1042057, AGS-1342895]; DARPA
[HR0011-09-C-0099]
FX This work was supported by awards AGS-1042057 and AGS-1342895 from the
National Science Foundation and by contract HR0011-09-C-0099 from DARPA
to Cornell University. D. L. H. appreciates the helpful comments from C.
La Hoz received during the preparation of this manuscript.
NR 44
TC 1
Z9 1
U1 1
U2 7
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 OCT 28
PY 2014
VL 41
IS 20
BP 6987
EP 6993
DI 10.1002/2014GL061691
PG 7
WC Geosciences, Multidisciplinary
SC Geology
GA AU0WO
UT WOS:000345343100001
ER
PT J
AU Khemlani, SS
Barbey, AK
Johnson-Laird, PN
AF Khemlani, Sangeet S.
Barbey, Aron K.
Johnson-Laird, Philip N.
TI Causal reasoning with mental models
SO FRONTIERS IN HUMAN NEUROSCIENCE
LA English
DT Review
DE causal reasoning; mental models; explanations; enabling conditions;
lateral prefrontal cortex
ID PREFRONTAL CORTEX; UNIT-ACTIVITY; ENABLING CONDITIONS; WORKING-MEMORY;
FRONTAL-LOBE; ARCHITECTURE; MONKEY; LESION; COVARIATION; EXPLANATION
AB This paper outlines the model-based theory of causal reasoning. It postulates that the core meanings of causal assertions are deterministic and refer to temporally-ordered sets of possibilities: A causes B to occur means that given A, B occurs, whereas A enables B to occur means that given A, it is possible for B to occur. The paper shows how mental models represent such assertions, and how these models underlie deductive, inductive, and abductive reasoning yielding explanations. It reviews evidence both to corroborate the theory and to account for phenomena sometimes taken to be incompatible with it. Finally, it reviews neuroscience evidence indicating that mental models for causal inference are implemented within lateral prefrontal cortex.
C1 [Khemlani, Sangeet S.] Naval Res Lab, Navy Ctr Appl Res Artificial Intelligence, Washington, DC 20375 USA.
[Barbey, Aron K.] Univ Illinoi Urbana Champaign, Beckman Inst Adv Sci & Technol, Urbana, IL USA.
[Johnson-Laird, Philip N.] Princeton Univ, Dept Psychol, Princeton, NJ 08544 USA.
[Johnson-Laird, Philip N.] NYU, Dept Psychol, New York, NY 10003 USA.
RP Khemlani, SS (reprint author), Naval Res Lab, Navy Ctr Appl Res Artificial Intelligence, Washington, DC 20375 USA.
EM skhemlani@gmail.com; barbey@illinois.edu; phil@princeton.edu
RI Barbey, Aron/L-7312-2015
OI Barbey, Aron/0000-0002-6092-0912
FU National Science Foundation Graduate Research Fellowship; National
Science Foundation Grant [SES 0844851]
FX This research reported herein was supported by a National Science
Foundation Graduate Research Fellowship to the first author, and by
National Science Foundation Grant No. SES 0844851 to the second author
to study deductive and probabilistic reasoning. We are grateful for Max
Lotstein for help in all aspects of the research, including the
computational modeling. We thank Paul Bello, Ruth Byrne, Sam Glucksberg,
Adele Goldberg, Catrinel Haught, Max Lotstein, Marco Ragni, and Greg
Trafton for helpful criticisms.
NR 127
TC 2
Z9 2
U1 4
U2 24
PU FRONTIERS RESEARCH FOUNDATION
PI LAUSANNE
PA PO BOX 110, LAUSANNE, 1015, SWITZERLAND
SN 1662-5161
J9 FRONT HUM NEUROSCI
JI Front. Hum. Neurosci.
PD OCT 28
PY 2014
VL 8
AR 849
DI 10.3389/fnhum.2014.00849
PG 15
WC Neurosciences; Psychology
SC Neurosciences & Neurology; Psychology
GA AR7HJ
UT WOS:000343749700002
PM 25389398
ER
PT J
AU Yu, KG
Rizos, C
Burrage, D
Dempster, AG
Zhang, KF
Markgraf, M
AF Yu, Kegen
Rizos, Chris
Burrage, Derek
Dempster, Andrew G.
Zhang, Kefei
Markgraf, Markus
TI GNSS remote sensing
SO EURASIP JOURNAL ON ADVANCES IN SIGNAL PROCESSING
LA English
DT Editorial Material
ID GPS; SIGNAL
C1 [Yu, Kegen] Wuhan Univ, Sch Geodesy & Geomat, Wuhan 430079, Peoples R China.
[Rizos, Chris] UNSW, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia.
[Burrage, Derek] US Naval Res Lab, Washington, DC 20375 USA.
[Dempster, Andrew G.] UNSW, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia.
[Zhang, Kefei] RMIT Univ, SPACE Res Ctr, Melbourne, Vic 3001, Australia.
[Markgraf, Markus] German Space Operat Ctr DLR, Sect Space Flight Technol, D-82234 Wessling, Germany.
RP Yu, KG (reprint author), Wuhan Univ, Sch Geodesy & Geomat, Wuhan 430079, Peoples R China.
EM kgyu@sgg.whu.edu.cn
NR 7
TC 0
Z9 0
U1 0
U2 10
PU SPRINGER INTERNATIONAL PUBLISHING AG
PI CHAM
PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND
SN 1687-6180
J9 EURASIP J ADV SIG PR
JI EURASIP J. Adv. Signal Process.
PD OCT 25
PY 2014
AR 158
DI 10.1186/1687-6180-2014-158
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA AT0DU
UT WOS:000344608200001
ER
PT J
AU Aquino, TL
Brice, GT
Hayes, S
Myers, CA
McDowell, J
White, B
Garten, R
Johnston, D
AF Aquino, Theodore L.
Brice, Gary T.
Hayes, Sherry
Myers, Christopher A.
McDowell, Jaqueline
White, Brenda
Garten, Rebecca
Johnston, Daniel
TI Influenza Outbreak in a Vaccinated Population - USS Ardent, February
2014
SO MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT
LA English
DT Article
ID NAVY SHIP; TRANSMISSION; VIRUS
C1 [Aquino, Theodore L.] US Navy, Mine Counter Measures Squadron 3, Arlington, VA 22201 USA.
[Brice, Gary T.; Myers, Christopher A.; White, Brenda] US Navy, Naval Hlth Res Ctr, Arlington, VA USA.
[Hayes, Sherry; McDowell, Jaqueline] US Navy, Navy Environm & Prevent Med Unit 5, Arlington, VA USA.
[Garten, Rebecca] CDC, World Hlth Org Collaborating Ctr Influenza, Atlanta, GA 30333 USA.
[Johnston, Daniel] USS Ardent, Independent Duty Corpsman, San Diego, CA USA.
RP Aquino, TL (reprint author), US Navy, Mine Counter Measures Squadron 3, Arlington, VA 22201 USA.
EM taquino@health.usf.edu
NR 11
TC 9
Z9 9
U1 0
U2 1
PU CENTER DISEASE CONTROL & PREVENTION
PI ATLANTA
PA MAILSTOP E-90, ATLANTA, GA 30333 USA
SN 0149-2195
EI 1545-861X
J9 MMWR-MORBID MORTAL W
JI MMWR-Morb. Mortal. Wkly. Rep.
PD OCT 24
PY 2014
VL 63
IS 42
BP 947
EP 949
PG 3
WC Public, Environmental & Occupational Health
SC Public, Environmental & Occupational Health
GA AR7ZL
UT WOS:000343795400003
PM 25340911
ER
PT J
AU Hong, SK
Mendez, VM
Koch, T
Wall, WS
Anlage, SM
AF Hong, Sun K.
Mendez, Victor M.
Koch, Trystan
Wall, Walter S.
Anlage, Steven M.
TI Nonlinear Electromagnetic Time Reversal in an Open Semireverberant
System
SO PHYSICAL REVIEW APPLIED
LA English
DT Article
ID UNDERWATER ACOUSTIC COMMUNICATION; PHASE-CONJUGATION; WIRELESS
COMMUNICATIONS; MIRROR; WAVES; PULSE
AB We consider nonlinear electromagnetic time reversal (TR) applied to a semireverberant complex enclosure containing a discrete passive nonlinear circuit. Unlike closed reverberant systems used for the previous demonstrations of nonlinear electromagnetic TR, the experimental system used here better represents realistic environments that are often far more lossy. Moreover, we demonstrate the use of pulse inversion to extract nonlinear responses for electromagnetic time reversal, which could help overcome potential practical-implementation issues. Concentrating on the application of this technique as an efficient power-delivery method, we evaluate the peak power enhancement resulting from TR focusing at the location of the nonlinear circuit.
C1 [Hong, Sun K.; Mendez, Victor M.; Wall, Walter S.] Naval Res Lab, Tact Elect Warfare Div, Washington, DC 20375 USA.
[Koch, Trystan; Anlage, Steven M.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
[Koch, Trystan] Envisioneering Inc, Alexandria, VA 22303 USA.
RP Hong, SK (reprint author), Naval Res Lab, Tact Elect Warfare Div, Washington, DC 20375 USA.
EM sun.hong@nrl.navy.mil
RI Hong, Sun/E-9597-2014
OI Hong, Sun/0000-0003-4417-8727
FU DARPA; ONR [N00014130474]; Maryland Center for Nanophysics and Advanced
Materials
FX This work is sponsored in part by DARPA (approved for public release,
distribution unlimited). The work at UMD is also supported in part by
the ONR Grant No. N00014130474 and the Maryland Center for Nanophysics
and Advanced Materials. The views expressed are those of the authors and
do not reflect the official policy or position of the Department of
Defense or the U. S. Government. The authors thank Dr. Tim Andreadis,
Mr. Jerry Kim, and Bo Xiao, as well as UMD Gemstone Team TESLA, for
their comments and feedback.
NR 42
TC 4
Z9 4
U1 2
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2331-7019
J9 PHYS REV APPL
JI Phys. Rev. Appl.
PD OCT 23
PY 2014
VL 2
IS 4
AR 044013
DI 10.1103/PhysRevApplied.2.044013
PG 8
WC Physics, Applied
SC Physics
GA AS5YN
UT WOS:000344342500003
ER
PT J
AU Bandyopadhyay, PR
Hellum, AM
AF Bandyopadhyay, Promode R.
Hellum, Aren M.
TI Modeling how shark and dolphin skin patterns control transitional
wall-turbulence vorticity patterns using spatiotemporal phase reset
mechanisms
SO SCIENTIFIC REPORTS
LA English
DT Article
ID UNSTABLE PARALLEL FLOWS; PLANE POISEUILLE FLOW; NON-LINEAR MECHANICS;
BOUNDARY-LAYER; WAVE DISTURBANCES; VISCOUS SUBLAYER; DRAG REDUCTION;
SHEAR FLOWS; DYNAMICS
AB Many slow-moving biological systems like seashells and zebrafish that do not contend with wall turbulence have somewhat organized pigmentation patterns flush with their outer surfaces that are formed by underlying autonomous reaction-diffusion (RD) mechanisms. In contrast, sharks and dolphins contend with wall turbulence, are fast swimmers, and have more organized skin patterns that are proud and sometimes vibrate. A nonlinear spatiotemporal analytical model is not available that explains the mechanism underlying control of flow with such proud patterns, despite the fact that shark and dolphin skins are major targets of reverse engineering mechanisms of drag and noise reduction. Comparable to RD, a minimal self-regulation model is given for wall turbulence regeneration in the transitional regime-laterally coupled, diffusively-which, although restricted to pre-breakdown durations and to a plane close and parallel to the wall, correctly reproduces many experimentally observed spatiotemporal organizations of vorticity in both laminar-to-turbulence transitioning and very low Reynolds number but turbulent regions. We further show that the onset of vorticity disorganization is delayed if the skin organization is treated as a spatiotemporal template of olivo-cerebellar phase reset mechanism. The model shows that the adaptation mechanisms of sharks and dolphins to their fluid environment have much in common.
C1 [Bandyopadhyay, Promode R.; Hellum, Aren M.] Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Bandyopadhyay, PR (reprint author), Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
EM promode.bandyopadhya@navy.mil
FU Office of Naval Research, Biology-Inspired Autonomous Systems Program
[ONR 341]; ASEE-ONR Postdoctoral Fellowship
FX Support of this research came from the Office of Naval Research,
Biology-Inspired Autonomous Systems Program (ONR 341), to P. R. B. A. M.
H. was supported by an ASEE-ONR Postdoctoral Fellowship.
NR 56
TC 1
Z9 1
U1 6
U2 35
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 OCT 23
PY 2014
VL 4
AR 6650
DI 10.1038/srep06650
PG 10
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AR4XK
UT WOS:000343589200001
PM 25338940
ER
PT J
AU Claussen, JC
Daniele, MA
Geder, J
Pruessner, M
Makinen, AJ
Melde, BJ
Twigg, M
Verbarg, JM
Medintz, IL
AF Claussen, Jonathan C.
Daniele, Michael A.
Geder, Jason
Pruessner, Marius
Maekinen, Antti J.
Melde, Brian J.
Twigg, Mark
Verbarg, Jasenka M.
Medintz, Igor L.
TI Platinum-Paper Micromotors: An Urchin-like Nanohybrid Catalyst for Green
Monopropellant Bubble-Thrusters
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE nanowires; platinum; cellulose; propulsion; hydrogen peroxide;
autonomous underwater vehicles (AUVs)
ID HYDROGEN-PEROXIDE DECOMPOSITION; HETEROGENEOUS CATALYSIS; PROPELLED
MICROMOTORS; AUTONOMOUS MOVEMENT; METHANOL OXIDATION; COLLOIDAL
PLATINUM; SINGLE-CRYSTAL; NANOPARTICLES; NANOMOTORS; NANOWIRES
AB Platinum nanourchins supported on microfibrilated cellulose films (MFC) were fabricated and evaluated as hydrogen peroxide catalysts for small-scale, autonomous underwater vehicle (AUV) propulsion systems. The catalytic substrate was synthesized through the reduction of chloroplatinic acid to create a thick film of Pt coral-like microstructures coated with Pt urchin-like nanowires that are arrayed in three dimensions on a two-dimensional MFC film. This organic/inorganic nanohybrid displays high catalytic ability (reduced activation energy of 50-63% over conventional materials and 13-19% for similar Pt nanoparticle-based structures) during hydrogen peroxide (H2O2) decomposition as well as sufficient propulsive thrust (>0.5 N) from reagent grade H2O2 (30% w/w) fuel within a small underwater reaction vessel. The results demonstrate that these layered nanohybrid sheets are robust and catalytically effective for green, H2O2-based micro-AUV propulsion where the storage and handling of highly explosive, toxic fuels are prohibitive due to size-requirements, cost limitations, and close person-to-machine contact.
C1 [Claussen, Jonathan C.] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA.
[Daniele, Michael A.; Pruessner, Marius; Melde, Brian J.; Verbarg, Jasenka M.; Medintz, Igor L.] US Naval Res Lab, Ctr BioMol Sci & Engn, Washington, DC 20375 USA.
[Geder, Jason] US Naval Res Lab, Labs Computat Phys & Fluid Dynam, Washington, DC 20375 USA.
[Maekinen, Antti J.] US Naval Res Lab, Opt Sci Div, Washington, DC 20375 USA.
[Twigg, Mark] US Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
RP Claussen, JC (reprint author), Iowa State Univ, Dept Mech Engn, 2104 Black Engn, Ames, IA 50011 USA.
EM jcclauss@iastate.edu
OI Claussen, Jonathan/0000-0001-7065-1077
FU ONR; NRL; DTRA
FX The authors gratefully acknowledge funding support from ONR, NRL, and
DTRA.
NR 74
TC 10
Z9 10
U1 5
U2 51
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 OCT 22
PY 2014
VL 6
IS 20
BP 17837
EP 17847
DI 10.1021/am504525e
PG 11
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA AR6HF
UT WOS:000343684200061
PM 25215632
ER
PT J
AU Lock, EH
Fernsler, RF
Slinker, SP
Singer, IL
Walton, SG
AF Lock, E. H.
Fernsler, R. F.
Slinker, S. P.
Singer, I. L.
Walton, S. G.
TI Global model for plasmas generated by electron beams in low-pressure
nitrogen
SO JOURNAL OF PHYSICS D-APPLIED PHYSICS
LA English
DT Article
DE plasma diagnostics; optical emission spectroscopy; electron beams
ID CROSS-SECTIONS; FLUORESCENCE EFFICIENCIES; PROCESSING SYSTEM;
GLOW-DISCHARGE; EXCITATION; ARGON; AIR; N2; DIAGNOSTICS; DEPOSITION
AB A global model is presented to determine the densities of the major charged and neutral species generated by a thin, planar electron beam passing through low-pressure nitrogen. The creation rates are based on results provided by a Boltzmann code that includes contributions not only from the beam electrons but also from the energetic daughter electrons created by ionization. Optical emission spectrometry is used to help validate the rates, and measurements of the total ion density are used to help validate the charged-particle densities. A key conclusion of the study is that electron-beam-generated plasmas differ strongly in character and composition, and thus in capabilities, from plasmas generated by the electrical discharges now widely used in material processing.
C1 [Lock, E. H.; Fernsler, R. F.; Slinker, S. P.; Singer, I. L.; Walton, S. G.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Lock, EH (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
EM evgeniya.lock@nrl.navy.mil
FU Naval Research Laboratory Base Programme
FX The work was supported by the Naval Research Laboratory Base Programme.
E H Lock acknowledges G Petrov and Tz Petrova for many useful
discussions. E H Lock acknowledges J Weaver, M Wolford and J Oh for the
tungsten calibration lamp.
NR 63
TC 3
Z9 3
U1 3
U2 16
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0022-3727
EI 1361-6463
J9 J PHYS D APPL PHYS
JI J. Phys. D-Appl. Phys.
PD OCT 22
PY 2014
VL 47
IS 42
AR 425206
DI 10.1088/0022-3727/47/42/425206
PG 12
WC Physics, Applied
SC Physics
GA AQ9EM
UT WOS:000343150100015
ER
PT J
AU Reviol, W
Janssens, RVF
Frauendorf, S
Sarantites, DG
Carpenter, MP
Chen, X
Chiara, CJ
Hartley, DJ
Hauschild, K
Lauritsen, T
Lopez-Martens, A
Montero, M
Pechenaya, OL
Seweryniak, D
Snyder, JB
Zhu, S
AF Reviol, W.
Janssens, R. V. F.
Frauendorf, S.
Sarantites, D. G.
Carpenter, M. P.
Chen, X.
Chiara, C. J.
Hartley, D. J.
Hauschild, K.
Lauritsen, T.
Lopez-Martens, A.
Montero, M.
Pechenaya, O. L.
Seweryniak, D.
Snyder, J. B.
Zhu, S.
TI Characterization of octupole-type structures in Th-221
SO PHYSICAL REVIEW C
LA English
DT Article
ID HIGH-SPIN; CONTRASTING BEHAVIOR; TIDAL WAVES; NUCLEI; DEFORMATION;
GAMMASPHERE; ISOTOPES; SHAPES; STATES; BANDS
AB A detailed level scheme for Th-221 has been established in an experiment using the O-18 + Pb-207 reaction at 96 MeV. The evaporation residues from this fissile system were selected with the HERCULES detector array and residue-gated gamma rays were measured with Gammasphere. Three band structures of interlinked, alternating-parity levels are observed, two of which are non-yrast. In addition, several high-lying excitations are found. The yrast band is seen up to spin-parity 37/2(-) and 39/2(+), beyond which a high-spin feeding transition is observed. The non-yrast sequences are interpreted as parity-doublet structures, based on a configuration similar to that of the yrast band in Th-223 (K = 5/2). The key properties of even-odd nuclei in this mass region [B(E1)/B(E2) and B(M1)/B(E2) ratios, spin alignments, parity splittings] are reviewed.
C1 [Reviol, W.; Sarantites, D. G.; Chen, X.; Montero, M.] Washington Univ, Dept Chem, St Louis, MO 63130 USA.
[Janssens, R. V. F.; Carpenter, M. P.; Chiara, C. J.; Lauritsen, T.; Seweryniak, D.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Frauendorf, S.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Chiara, C. J.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Hartley, D. J.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA.
[Hauschild, K.; Lopez-Martens, A.] CNRS, IN2P3, CSNSM, F-91405 Orsay, France.
[Pechenaya, O. L.; Snyder, J. B.] Washington Univ, Dept Phys, St Louis, MO 63130 USA.
RP Reviol, W (reprint author), Washington Univ, Dept Chem, St Louis, MO 63130 USA.
RI Hauschild, Karl/A-6726-2009; Carpenter, Michael/E-4287-2015
OI Carpenter, Michael/0000-0002-3237-5734
FU US Department of Energy, Office of Nuclear Physics [DE-FG02-88ER-40406,
DE-AC02-06CH11357, DE-FG02-95ER40934, DE-FG02-94ER40834]; National
Science Foundation [PHY-0854815]
FX The authors thank J. Elson (WU) and J. Rohrer (ANL) for technical
support and J. P. Greene (ANL) for the preparation of the targets. This
work was supported by the US Department of Energy, Office of Nuclear
Physics, Contracts No. DE-FG02-88ER-40406, No. DE-AC02-06CH11357, No.
DE-FG02-95ER40934, and No. DE-FG02-94ER40834, and by the National
Science Foundation, Grant No. PHY-0854815.
NR 35
TC 2
Z9 2
U1 0
U2 2
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 OCT 21
PY 2014
VL 90
IS 4
AR 044318
DI 10.1103/PhysRevC.90.044318
PG 18
WC Physics, Nuclear
SC Physics
GA AS1FK
UT WOS:000344025000003
ER
PT J
AU Emery, JD
Wheeler, VH
Johns, JE
McBriarty, ME
Detlefs, B
Hersam, MC
Gaskill, DK
Bedzyk, MJ
AF Emery, Jonathan D.
Wheeler, Virginia H.
Johns, James E.
McBriarty, Martin E.
Detlefs, Blanka
Hersam, Mark C.
Gaskill, D. Kurt
Bedzyk, Michael J.
TI Structural consequences of hydrogen intercalation of epitaxial graphene
on SiC(0001)
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID SILICON-CARBIDE; TRANSISTORS; CONFINEMENT; PERFORMANCE; BARRIER; AREA
AB The intercalation of various atomic species, such as hydrogen, to the interface between epitaxial graphene (EG) and its SiC substrate is known to significantly influence the electronic properties of the graphene overlayers. Here, we use high-resolution X-ray reflectivity to investigate the structural consequences of the hydrogen intercalation process used in the formation of quasi-free-standing (QFS) EG/SiC(0001). We confirm that the interfacial layer is converted to a layer structurally indistinguishable from that of the overlying graphene layers. This newly formed graphene layer becomes decoupled from the SiC substrate and, along with the other graphene layers within the film, is vertically displaced by similar to 2.1 angstrom. The number of total carbon layers is conserved during the process, and we observe no other structural changes such as interlayer intercalation or expansion of the graphene d-spacing. These results clarify the under-determined structure of hydrogen intercalated QFS-EG/SiC(0001) and provide a precise model to inform further fundamental and practical understanding of the system. (C) 2014 AIP Publishing LLC.
C1 [Emery, Jonathan D.; Johns, James E.; McBriarty, Martin E.; Hersam, Mark C.; Bedzyk, Michael J.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
[Wheeler, Virginia H.; Gaskill, D. Kurt] US Navy, Res Lab, Washington, DC 20375 USA.
[Detlefs, Blanka] ESRF, F-38043 Grenoble, France.
[Bedzyk, Michael J.] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
RP Emery, JD (reprint author), Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
EM jdemery@anl.gov; bedzyk@northwestern.edu
RI Detlefs, Blanka/C-9249-2009; Hersam, Mark/B-6739-2009; Bedzyk,
Michael/B-7503-2009;
OI McBriarty, Martin/0000-0002-7802-3267
FU MRSEC (NSF) [DMR-1121262]; Office of Naval Research; DOE
[DE-AC02-06CH11357]; National Science Foundation [DGE-0824162];
Department of Energy [DE-FG02-09ER16109]; W. M. Keck Foundation Science
and Engineering Grant
FX We acknowledge support from MRSEC (NSF Grant No. DMR-1121262) and
support from the Office of Naval Research. We acknowledge use of ID32 at
the ESRF, as well as 5-ID-C and 6-ID-B at the APS, a DOE facility
supported under Contract No. DE-AC02-06CH11357 to Argonne National
Laboratory (ANL). This material is partially based upon work supported
by the National Science Foundation Graduate Research Fellowship under
Grant No. DGE-0824162. We acknowledge Sang-Soo Lee and Paul Fenter
(ANL), as well as Jorg Zegenhagen (ESRF) for valuable discussions
concerning this work. J.E.J. and M.C.H. acknowledge the Department of
Energy (DE-FG02-09ER16109) and a W. M. Keck Foundation Science and
Engineering Grant.
NR 33
TC 9
Z9 9
U1 6
U2 62
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD OCT 20
PY 2014
VL 105
IS 16
AR 161602
DI 10.1063/1.4899142
PG 5
WC Physics, Applied
SC Physics
GA AS6GS
UT WOS:000344363000015
ER
PT J
AU Greve, TR
Leonidaki, I
Xilouris, EM
Weiss, A
Zhang, ZY
van der Werf, P
Aalto, S
Armus, L
Diaz-Santos, T
Evans, AS
Fischer, J
Gao, Y
Gonzalez-Alfonso, E
Harris, A
Henkel, C
Meijerink, R
Naylor, DA
Smith, HA
Spaans, M
Stacey, GJ
Veilleux, S
Walter, F
AF Greve, T. R.
Leonidaki, I.
Xilouris, E. M.
Weiss, A.
Zhang, Z. -Y.
van der Werf, P.
Aalto, S.
Armus, L.
Diaz-Santos, T.
Evans, A. S.
Fischer, J.
Gao, Y.
Gonzalez-Alfonso, E.
Harris, A.
Henkel, C.
Meijerink, R.
Naylor, D. A.
Smith, H. A.
Spaans, M.
Stacey, G. J.
Veilleux, S.
Walter, F.
TI STAR FORMATION RELATIONS AND CO SPECTRAL LINE ENERGY DISTRIBUTIONS
ACROSS THE J-LADDER AND REDSHIFT
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: evolution; galaxies: formation; galaxies: ISM; galaxies:
starburst; ISM: molecules
ID ULTRALUMINOUS INFRARED GALAXIES; DENSE MOLECULAR GAS; LENSED
SUBMILLIMETER GALAXIES; HERSCHEL-SPIRE SPECTROSCOPY; FREE-FREE EMISSION;
FORMING GALAXIES; INTERSTELLAR-MEDIUM; NEARBY GALAXIES; STARBURST
GALAXY; FORMATION LAW
AB We present FIR [50-300 mu m]-CO luminosity relations (i.e., log L-FIR = alpha log L'(CO) + beta) for the full CO rotational ladder from J = 1-0 up to J = 13-12 for a sample of 62 local (z <= 0.1) (Ultra) Luminous InfraredGalaxies (LIRGs; LIR[8-1000 mu m] > 10(11) L-circle dot) using data from Herschel SPIRE-FTS and ground-based telescopes. We extend our sample to high redshifts (z > 1) by including 35 submillimeter selected dusty star forming galaxies from the literature with robust CO observations, and sufficiently well-sampled FIR/submillimeter spectral energy distributions (SEDs), so that accurate FIR luminosities can be determined. The addition of luminous starbursts at high redshifts enlarge the range of the FIR-CO luminosity relations toward the high-IR-luminosity end, while also significantly increasing the small amount of mid-J/high-J CO line data (J = 5-4 and higher) that was available prior to Herschel. This new data set (both in terms of IR luminosity and J-ladder) reveals linear FIR-CO luminosity relations (i.e., a similar or equal to 1) for J = 1-0 up to J = 5-4, with a nearly constant normalization (beta similar to 2). In the simplest physical scenario, this is expected from the (also) linear FIR-(molecular line) relations recently found for the dense gas tracer lines (HCN and CS), as long as the dense gas mass fraction does not vary strongly within our (merger/starburst)-dominated sample. However, from J = 6-5 and up to the J = 13-12 transition, we find an increasingly sublinear slope and higher normalization constant with increasing J. We argue that these are caused by a warm (similar to 100 K) and dense (>10(4) cm(-3)) gas component whose thermal state is unlikely to be maintained by star-formation-powered far-UV radiation fields (and thus is no longer directly tied to the star formation rate). We suggest that mechanical heating (e.g., supernova-driven turbulence and shocks), and not cosmic rays, is the more likely source of energy for this component. The global CO spectral line energy distributions, which remain highly excited from J = 6-5 up to J = 13-12, are found to be a generic feature of the (U)LIRGs in our sample, and further support the presence of this gas component.
C1 [Greve, T. R.] UCL, Dept Phys & Astron, London WC1E 6BT, England.
[Leonidaki, I.; Xilouris, E. M.] Natl Observ Athens, Inst Astron Astrophys Space Applicat & Remote Sen, GR-15236 Penteli, Greece.
[Weiss, A.; Henkel, C.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Zhang, Z. -Y.] Royal Observ, UK Astron Technol Ctr, Sci & Technol Facil Council, Edinburgh EH9 3HJ, Midlothian, Scotland.
[Zhang, Z. -Y.] European So Observ, D-85748 Garching, Germany.
[van der Werf, P.; Meijerink, R.] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands.
[Aalto, S.] Chalmers, Dept Earth & Space Sci, Onsala Observ, S-43994 Onsala, Sweden.
[Armus, L.; Diaz-Santos, T.] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA.
[Evans, A. S.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.
[Evans, A. S.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA.
[Fischer, J.] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Gao, Y.] Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China.
[Gonzalez-Alfonso, E.] Univ Alcala de Henares, Dept Fs, E-28871 Alcala De Henares, Spain.
[Harris, A.; Veilleux, S.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[Henkel, C.] King Abdulaziz Univ, Dept Astron, Jeddah 21589, Saudi Arabia.
[Naylor, D. A.] Univ Lethbridge, Inst Space Imaging Sci, Dept Phys & Astron, Lethbridge, AB T1K 3M4, Canada.
[Smith, H. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Spaans, M.] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands.
[Stacey, G. J.] Cornell Univ, Dept Astron, Ithaca, NY 1485 USA.
[Walter, F.] Max Planck Inst Astron, D-691117 Heidelberg, Germany.
RP Greve, TR (reprint author), UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England.
EM t.greve@ucl.ac.uk
RI Xilouris, Emmanuel/K-9459-2013; LEONIDAKI, IOANNA/K-4351-2013;
OI Zhang, Zhiyu/0000-0002-7299-2876
FU "DeMoGas" project; European Social Fund (ESF); STEC Advanced Fellowship;
Chinese Academy of Sciences Fellowship for Young International
Scientists [2012y1ja0006]; European Research Council (ERC); Office of
Naval Research; NHSC/JPL
FX The authors gratefully acknowledge financial support under the "DeMoGas"
project. The project DeMoGas is implemented under the "ARISTELV Action
of the "Operational Programme Education and Lifelong Learning." The
project is co-funded by the European Social Fund (ESF) and National
Resources. T.R.G. acknowledges support from an STEC Advanced Fellowship.
T.R.G. was also supported by Chinese Academy of Sciences Fellowship for
Young International Scientists (grant no. 2012y1ja0006). Z.Y.Z.
acknowledges support from the European Research Council (ERC) in the
form of Advanced Grant,COSMICISM. We are indebted to P. P. Papadopoulos
for extensive discussions and comments on the paper (He ho'okele wa'a no
ka la 'ino). Basic research in infrared astronomy at the Naval Research
Laboratory is funded by the Office of Naval Research. J.F. also
acknowledges support from the NHSC/JPL. The research presented here has
made use of the NASA/IPAC Extragalactic Database (NED), which is
operated by the Jet Propulsion Laboratory, California Institute of
Technology, under contract with the National Aeronautics and Space
Administration. Finally, we would like to thank the anonymous referee
for a useful and constructive referee report that helped improve the
paper.
NR 133
TC 25
Z9 25
U1 0
U2 6
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 OCT 20
PY 2014
VL 794
IS 2
AR 142
DI 10.1088/0004-637X/794/2/142
PG 16
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AQ8OF
UT WOS:000343085800046
ER
PT J
AU Stawarz, L
Szostek, A
Cheung, CC
Siemiginowska, A
Koziel-Wierzbowska, D
Werner, N
Simionescu, A
Madejski, G
Begelman, MC
Harris, DE
Ostrowski, M
Hagino, K
AF Stawarz, L.
Szostek, A.
Cheung, C. C.
Siemiginowska, A.
Koziel-Wierzbowska, D.
Werner, N.
Simionescu, A.
Madejski, G.
Begelman, M. C.
Harris, D. E.
Ostrowski, M.
Hagino, K.
TI ON THE INTERACTION OF THE PKS B1358-113 RADIO GALAXY WITH THE A1836
CLUSTER
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: active; galaxies: individual (PKS B1358-114); galaxies: jets;
intergalactic medium; X-rays: galaxies: clusters
ID ACTIVE GALACTIC NUCLEI; DEEP CHANDRA OBSERVATION; LARGE-SCALE SHOCK;
X-RAY-EMISSION; INVERSE-COMPTON EMISSION; SUPERMASSIVE BLACK-HOLES;
CENTIMETER VLA SURVEY; DIGITAL SKY SURVEY; LESS-THAN 0.3; XMM-NEWTON
AB Here we present the analysis of multifrequency data gathered for the Fanaroff-Riley type-II (FR II) radio galaxy PKS B1358-113, hosted in the brightest cluster galaxy in the center of A1836. The galaxy harbors one of the most massive black holes known to date, and our analysis of the acquired optical data reveals that this black hole is only weakly active, with a mass accretion rate (M) over dot(acc) similar to 2 x 10(-4) (M) over dot(Edd) similar to 0.02 M-circle dot yr(-1). Based on analysis of new Chandra and XMM-Newton X-ray observations and archival radio data, and assuming the well-established model for the evolution of FR II radio galaxies, we derive the preferred range for the jet kinetic luminosity L-j similar to (1-6) x 10(-3) L-Edd similar to (0.5-3) x 10(45) erg s(-1). This is above the values implied by various scaling relations proposed for radio sources in galaxy clusters, being instead very close to the maximum jet power allowed for the given accretion rate. We also constrain the radio source lifetime as tau(j) similar to 40-70 Myr, meaning the total amount of deposited jet energy E-tot similar to (2-8) x 10(60) erg. We argue that approximately half of this energy goes into shock heating of the surrounding thermal gas, and the remaining 50% is deposited into the internal energy of the jet cavity. The detailed analysis of the X-ray data provides indication for the presence of a bow shock driven by the expanding radio lobes into the A1836 cluster environment. We derive the corresponding shock Mach number in the range M-sh similar to 2-4, which is one of the highest claimed for clusters or groups of galaxies. This, together with the recently growing evidence that powerful FR II radio galaxies may not be uncommon in the centers of clusters at higher redshifts, supports the idea that jet-induced shock heating may indeed play an important role in shaping the properties of clusters, galaxy groups, and galaxies in formation. In this context, we speculate on a possible bias against detecting stronger jet-driven shocks in poorer environments, resulting from inefficient electron heating at the shock front, combined with a relatively long electron-ion temperature equilibration timescale.
C1 [Stawarz, L.; Simionescu, A.; Hagino, K.] JAXA, Inst Space & Astronaut Sci, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan.
[Stawarz, L.; Szostek, A.; Koziel-Wierzbowska, D.; Ostrowski, M.] Jagiellonian Univ, Astron Observ, PL-30244 Krakow, Poland.
[Szostek, A.; Werner, N.] Stanford Univ, KIPAC, Stanford, CA 94305 USA.
[Szostek, A.; Werner, N.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Cheung, C. C.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Siemiginowska, A.; Harris, D. E.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Madejski, G.] Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA.
[Madejski, G.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Begelman, M. C.] Univ Colorado, JILA, Boulder, CO 80309 USA.
[Begelman, M. C.] NIST, Boulder, CO 80309 USA.
RP Stawarz, L (reprint author), JAXA, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan.
EM stawarz@astro.isas.jaxa.jp
OI , kouichi/0000-0003-4235-5304
FU Polish NSC [DEC-2012/04/A/ST9/00083]; Chandra grant [GO0-11144X]; NASA
[DPR S-15633-Y, NAS8-03060]
FX L.S. and M.O. were supported by Polish NSC grant
DEC-2012/04/A/ST9/00083. A.Sz. and G.M. were supported by Chandra grant
GO0-11144X. Work by C.C.C. at NRL is supported in part by NASA DPR
S-15633-Y. Support for A.S. was provided by NASA contract NAS8-03060.
The authors thank the anonymous referee for critical reading of the
submitted manuscript and constructive comments which helped to improve
the paper.
NR 177
TC 3
Z9 3
U1 1
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 OCT 20
PY 2014
VL 794
IS 2
AR 164
DI 10.1088/0004-637X/794/2/164
PG 16
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AQ8OF
UT WOS:000343085800068
ER
PT J
AU Glasbrenner, JK
Bussmann, KM
Mazin, II
AF Glasbrenner, J. K.
Bussmann, K. M.
Mazin, I. I.
TI Magnetic spiral induced by strong correlations in MnAu2
SO PHYSICAL REVIEW B
LA English
DT Article
ID HEAVY RARE-EARTHS; SPIN-DENSITY WAVE; PAR DIFFRACTION; MN1-XCRXAU2;
NEUTRONS; DYNAMICS; METALS; ENERGY; ETUDE; MNSI
AB The compound MnAu2 is one of the oldest known spin-spiral materials, yet the nature of the spiral state is still not clear. The spiral cannot be explained via relativistic effects due to the short pitch of the spiral and the weakness of the spin-orbit interaction in Mn, and another common mechanism, nesting, is ruled out as direct calculations show no features at the relevant wave vector. We propose that the spiral state is induced by a competition between the short-range antiferromagnetic exchange and a long-range interaction induced by the polarization of Au bands, similar to double exchange. We find that, contrary to earlier reports, the ground state in standard density functional theory is ferromagnetic, i.e., the latter interaction dominates. However, an accounting for Coulomb correlations via a Hubbard U suppresses the Schrieffer-Wolff-type s-d magnetic interaction between Mn and Au faster than the superexchange interaction, favoring a spin-spiral state. For realistic values of U, the resulting spiral wave vector is in close agreement with experiment.
C1 [Glasbrenner, J. K.] Naval Res Lab, Natl Res Council, Washington, DC 20375 USA.
[Bussmann, K. M.; Mazin, I. I.] Naval Res Lab, Washington, DC 20375 USA.
RP Glasbrenner, JK (reprint author), Naval Res Lab, Natl Res Council, Washington, DC 20375 USA.
RI Glasbrenner, James/K-5614-2015
OI Glasbrenner, James/0000-0003-2198-2309
FU U.S. Office of Naval Research (ONR) through the Naval Research
Laboratory's Basic Research Program; NRC program at NRL
FX We are very grateful to Kay Dewhurst for his invaluable help and advice
in setting up and performing spiral calculations in ELK. I.I.M.
acknowledges funding from the U.S. Office of Naval Research (ONR)
through the Naval Research Laboratory's Basic Research Program. J.K.G.
acknowledges the support of the NRC program at NRL.
NR 40
TC 4
Z9 4
U1 2
U2 13
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD OCT 17
PY 2014
VL 90
IS 14
AR 144421
DI 10.1103/PhysRevB.90.144421
PG 6
WC Physics, Condensed Matter
SC Physics
GA AS1AI
UT WOS:000344008100002
ER
PT J
AU Wood, WT
Martin, KM
Jung, W
Sample, J
AF Wood, Warren T.
Martin, Kylara M.
Jung, Wooyeol
Sample, John
TI Seismic reflectivity effects from seasonal seafloor temperature
variation
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID SEDIMENTS; BAY; VARIABILITY; MEDIA; DEPTH
AB The effects of seasonal temperature variation on sound speed contrasts at the seafloor are usually considered negligible in the analysis of seismic data but may be significant at large incidence angles (offsets) important for inversion of sediment elastic properties, or long-range acoustic transmission. In coastal areas, the maximum annual seafloor temperature variation can be several degrees Celsius or more, corresponding to a sound speed variation of 30 m/s or more. Thermal pulses propagate via conduction several meters into the seafloor resulting in a damped quasi-sinusoidal temperature profile with predictable wave number characteristics. The oscillating seasonal and spatial character of this signal creates a time-and frequency-dependent effect on the elastic seafloor reflectivity. Results of numerical simulations show that the expected temperature profile for most sediment types and porosities will have the strongest affect on frequencies between about 60 and 600 Hz, at incidence angles greater than about 50 degrees.
C1 [Wood, Warren T.; Sample, John] Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
[Martin, Kylara M.] Naval Res Lab, Natl Res Council Res Associate, Stennis Space Ctr, MS USA.
[Jung, Wooyeol] Naval Res Lab, Washington, DC USA.
RP Wood, WT (reprint author), Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
EM warren.wood@nrlssc.navy.mil
OI Martin, Kylara/0000-0002-4236-908X
FU Office of Naval Research
FX This work was funded by the Office of Naval Research. Data and models
used are available from the references cited. The authors thank Patrick
Hart and one anonymous reviewer for their constructive input.
NR 19
TC 0
Z9 0
U1 1
U2 6
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 OCT 16
PY 2014
VL 41
IS 19
BP 6826
EP 6832
DI 10.1002/2014GL061383
PG 7
WC Geosciences, Multidisciplinary
SC Geology
GA AT4MP
UT WOS:000344913800038
ER
PT J
AU Chomiuk, L
Linford, JD
Yang, J
O'Brien, TJ
Paragi, Z
Mioduszewski, AJ
Beswick, RJ
Cheung, CC
Mukai, K
Nelson, T
Ribeiro, VARM
Rupen, MP
Sokoloski, JL
Weston, J
Zheng, Y
Bode, MF
Eyres, S
Roy, N
Taylor, GB
AF Chomiuk, Laura
Linford, Justin D.
Yang, Jun
O'Brien, T. J.
Paragi, Zsolt
Mioduszewski, Amy J.
Beswick, R. J.
Cheung, C. C.
Mukai, Koji
Nelson, Thomas
Ribeiro, Valerio A. R. M.
Rupen, Michael P.
Sokoloski, J. L.
Weston, Jennifer
Zheng, Yong
Bode, Michael F.
Eyres, Stewart
Roy, Nirupam
Taylor, Gregory B.
TI Binary orbits as the driver of gamma-ray emission and mass ejection in
classical novae
SO NATURE
LA English
DT Article
ID COMMON ENVELOPE PHASE; MERLIN OBSERVATIONS; MONOCEROTIS 2012; EVOLUTION;
OUTBURST; RADIO; REMNANTS; MODELS; CYGNI; WINDS
AB Classical novae are the most common astrophysical thermonuclear explosions, occurring on the surfaces of white dwarf stars accreting gas from companions in binary star systems(1). Novae typically expel about 10(-4) solar masses of material at velocities exceeding 1,000 kilometres per second. However, the mechanism of mass ejection in novae is poorly understood, and could be dominated by the impulsive flash of thermonuclear energy(2), prolonged optically thick winds(3) or binary interaction with the nova envelope(4). Classical novae are now routinely detected at gigaelectronvolt gamma-ray wavelengths(5), suggesting that relativistic particles are accelerated by strong shocks in the ejecta. Here we report high-resolution radio imaging of the gamma-ray-emitting nova V959 Mon. We find that its ejecta were shaped by the motion of the binary system: some gas was expelled rapidly along the poles as a wind from the white dwarf, while denser material drifted out along the equatorial plane, propelled by orbital motion(6,7). At the interface between the equatorial and polar regions, we observe synchrotron emission indicative of shocks and relativistic particle acceleration, thereby pinpointing the location of gamma-ray production. Binary shaping of the nova ejecta and associated internal shocks are expected to be widespread among novae(8), explaining why many novae are gamma-ray emitters(5).
C1 [Chomiuk, Laura; Linford, Justin D.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
[Yang, Jun] Chalmers, Onsala Space Observ, Dept Earth & Space Sci, SE-43992 Onsala, Sweden.
[Yang, Jun; Paragi, Zsolt] Joint Inst VLBI Europe, NL-7990 AA Dwingeloo, Netherlands.
[Yang, Jun] Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China.
[O'Brien, T. J.; Beswick, R. J.] Univ Manchester, Jodrell Bank, Ctr Astrophys, Manchester M13 9PL, Lancs, England.
[Mioduszewski, Amy J.; Rupen, Michael P.] Natl Radio Astron Observ, Socorro, NM 87801 USA.
[Cheung, C. C.] Naval Res Lab, Space Sci Div, Washington, DC 20375 USA.
[Mukai, Koji] Univ Maryland Baltimore Cty, Sch Phys & Astron, Baltimore, MD 21250 USA.
[Mukai, Koji] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA.
[Mukai, Koji] NASA, Goddard Space Flight Ctr, Xray Astrophys Lab, Greenbelt, MD 20771 USA.
[Nelson, Thomas] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
[Ribeiro, Valerio A. R. M.] Univ Cape Town, Dept Astron, Astrophys Cosmol & Grav Ctr, ZA-7701 Rondebosch, South Africa.
[Rupen, Michael P.] Natl Res Council Canada, Herzberg Astron & Astrophys, Penticton, BC V2A 6J9, Canada.
[Sokoloski, J. L.; Weston, Jennifer; Zheng, Yong] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Bode, Michael F.] Liverpool John Moores Univ, Astrophys Res Inst, Liverpool L3 5RF, Merseyside, England.
[Eyres, Stewart] Univ Cent Lancashire, Jeremiah Horrocks Inst Math Phys & Astron, Preston PR1 2HE, Lancs, England.
[Roy, Nirupam] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Taylor, Gregory B.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
RP Chomiuk, L (reprint author), Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
EM chomiuk@pa.msu.edu
FU European Commission [283393, RI-261525]; Moore Foundation; Norris
Foundation; McDonnell Foundation; Associates of the California Institute
of Technology; University of Chicago; state of California; state of
Illinois; state of Maryland; NSF; NASA [DPR S-15633-Y,
10-FERMI10-C4-0060, NNX13AO91G]; NSF [AST-1211778]; South African SKA
Project; Alexander von Humboldt Foundation
FX The National Radio Astronomy Observatory (NRAO) is a facility of the US
National Science Foundation (NSF) operated under cooperative agreement
by Associated Universities, Inc. The EVN is a joint facility of
European, Chinese, South African and other radio astronomy institutes
funded by their respective national research councils. The EVN and
e-VLBI research infrastructures were supported by the European
Commission Seventh Framework Programme (FP/2007-2013) under grant
agreements nos 283393 (RadioNet3) and RI-261525 (NEXPReS). e-MERLIN is
operated by The University of Manchester at Jodrell Bank Observatory on
behalf of the Science and Technology Facilities Council. The SMA is a
joint project between the Smithsonian Astrophysical Observatory and the
Academia Sinica Institute of Astronomy and Astrophysics. Support for
CARMA construction came from the Moore Foundation, the Norris
Foundation, the McDonnell Foundation, the Associates of the California
Institute of Technology, the University of Chicago, the states of
California, Illinois and Maryland, and the NSF. Ongoing CARMA
development and operations are supported by the NSF and by the CARMA
partner universities. L.C. is a Jansky Fellow of the NRAO. This research
received funding from NASA programmes DPR S-15633-Y and
10-FERMI10-C4-0060 (C.C.C.), NASA award NNX13AO91G (T.N.), NSF award
AST-1211778 (J.L.S. and J.W.), the South African SKA Project
(V.A.R.M.R.) and the Alexander von Humboldt Foundation (N.R.).
NR 38
TC 19
Z9 19
U1 0
U2 13
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
EI 1476-4687
J9 NATURE
JI Nature
PD OCT 16
PY 2014
VL 514
IS 7522
BP 339
EP +
DI 10.1038/nature13773
PG 13
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AQ7JH
UT WOS:000342988600045
PM 25296250
ER
PT J
AU Frigo, NJ
Urick, VJ
Bucholtz, F
AF Frigo, Nicholas J.
Urick, Vincent J.
Bucholtz, Frank
TI Simple Linear Space Formalism for Polarization-Dependent
Interferometers: Theory and Application to Phase-Modulated Photonic
Links
SO JOURNAL OF LIGHTWAVE TECHNOLOGY
LA English
DT Article
DE Microwave photonics; optical polarization
ID COUPLERS
AB We outline a formalism for modeling interferometers, such as asymmetric Mach-Zehender interferometers used in both microwave photonic links and modern transmission systems. The formalism permits modeling elements with birefringence and polarization-dependent loss. By introducing a coordinate transformation between the standard "waveguide" view (coupled polarizations and independent waveguides) and the "coupler" view (coupled waveguides with independent polarizations), we reduce modeling to a concatenation of block diagonal operators and coordinate transformations. This connects to, and generalizes, an earlier approach. We illustrate the formalism by calculating the phase shift in a birefringent interferometer suffering differential normal mode losses in the couplers. Such phase shifts can be a significant source of even-order distortion in phase-modulated links employing an interferometer-based receiver.
C1 [Frigo, Nicholas J.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA.
[Urick, Vincent J.; Bucholtz, Frank] US Naval Res Lab, Div Opt Sci, Washington, DC 20375 USA.
RP Frigo, NJ (reprint author), US Naval Acad, Dept Phys, Annapolis, MD 21402 USA.
EM frigo@usna.edu; vincent.urick@nrl.navy.mil; frank.bucholtz@nrl.navy.mil
NR 14
TC 0
Z9 0
U1 1
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0733-8724
EI 1558-2213
J9 J LIGHTWAVE TECHNOL
JI J. Lightwave Technol.
PD OCT 15
PY 2014
VL 32
IS 20
SI SI
BP 3668
EP 3675
DI 10.1109/JLT.2014.2336173
PG 8
WC Engineering, Electrical & Electronic; Optics; Telecommunications
SC Engineering; Optics; Telecommunications
GA AX1JH
UT WOS:000346703000037
ER
PT J
AU Hu, Y
Marks, BS
Menyuk, CR
Urick, VJ
Williams, KJ
AF Hu, Yue
Marks, Brian S.
Menyuk, Curtis R.
Urick, Vincent J.
Williams, Keith J.
TI Modeling Sources of Nonlinearity in a Simple p-i-n Photodetector
SO JOURNAL OF LIGHTWAVE TECHNOLOGY
LA English
DT Article
DE 2D simulation; impact ionization; nonlinearity; p-i-n photodetector
ID PHOTODIODE NONLINEARITIES; TRANSIENT-RESPONSE; HIGH ILLUMINATION;
ABSORPTION; SIMULATION; FIELD
AB Nonlinearity in p-i-n photodetectors leads to power generation at harmonics of the input frequency, limiting the performance of RF-photonic systems. We use one-dimensional and two-dimensional simulations of the drift-diffusion equations to determine the physical origin of the saturation in a simple heterojunction p-i-n photodetector at room temperature. Incomplete ionization, external loading, impact ionization, and the Franz-Keldysh effect are all included in the model. Impact ionization is the main source of nonlinearity at large reverse bias (>10 V in the device that we simulated). The electron and hole current contributions to the second harmonic power were calculated. We find that impact ionization has a greater effect on the electrons than it does on the holes. We also find that the hole velocity saturates slowly with increasing reverse bias, and the hole current makes a large contribution to the harmonic power at 10 V. This result implies that decreasing the hole injection will decrease the harmonic power.
C1 [Hu, Yue; Menyuk, Curtis R.] Univ Maryland Baltimore Cty, Dept Comp Sci & Elect Engn, Baltimore, MD 21250 USA.
[Marks, Brian S.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA.
[Urick, Vincent J.; Williams, Keith J.] Naval Res Lab, Washington, DC 20375 USA.
RP Hu, Y (reprint author), Univ Maryland Baltimore Cty, Dept Comp Sci & Elect Engn, Baltimore, MD 21250 USA.
EM yuehu1@umbc.edu; marks@umbc.edu; menyuk@umbc.edu;
vincent.urick@nrl.navy.mil; keith.williams@nrl.navy.mil
FU Naval Research Laboratory
FX The authors would like to thank J. Diehl and M. Hutchinson for useful
discussions. Work at UMBC was partially supported by the Naval Research
Laboratory. The 2D simulations were carried out at UMBC's high
performance computing facility.
NR 29
TC 17
Z9 17
U1 4
U2 17
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0733-8724
EI 1558-2213
J9 J LIGHTWAVE TECHNOL
JI J. Lightwave Technol.
PD OCT 15
PY 2014
VL 32
IS 20
SI SI
BP 3710
EP 3720
DI 10.1109/JLT.2014.2315740
PG 11
WC Engineering, Electrical & Electronic; Optics; Telecommunications
SC Engineering; Optics; Telecommunications
GA AX1JH
UT WOS:000346703000043
ER
PT J
AU Hutchinson, MN
Singley, JM
Urick, VJ
Harmon, SR
McKinney, JD
Frigo, NJ
AF Hutchinson, Meredith N.
Singley, Joseph M.
Urick, Vincent J.
Harmon, Sharon R.
McKinney, Jason D.
Frigo, Nicholas J.
TI Mitigation of Photodiode Induced Even-Order Distortion in Photonic Links
With Predistortion Modulation
SO JOURNAL OF LIGHTWAVE TECHNOLOGY
LA English
DT Article
DE Distortion; microwave photonics; phase modulation; photodiode
distortion; polarization modulation
ID SUPPRESSION; PHASE
AB A new class of predistortion techniques for suppressing photodiode generated even-order distortion is presented. Modulation induced distortions can be generated to cancel the photodiode even-order contributions. This method is described conceptually, theoretically, and experimentally in a generalized fashion to include intensity-, phase-, and polarization-modulation implementations. Measured suppression of photodiode second-order distortion upwards of 34 dB is demonstrated with frequencies ranging from 1 to 35 GHz.
C1 [Hutchinson, Meredith N.; Singley, Joseph M.; Urick, Vincent J.; McKinney, Jason D.] Naval Res Lab, Washington, DC 20375 USA.
[Harmon, Sharon R.] Sotera Def Solut, Naval Res Lab, Photon Technol Branch, Annapolis, MD 20701 USA.
[Frigo, Nicholas J.] US Naval Acad, Annapolis, MD 21402 USA.
RP Hutchinson, MN (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM meredith.hutchinson@nrl.navy.mil; joseph.singley@nrl.navy.mil;
vin-cent.urick@nrl.navy.mil; sharon.harmon.ctr@nrl.navy.mil;
jason.mckinney@nrl.navy.mil; frigo@usna.edu
FU U.S. Office of Naval Research
FX This work was supported by the U.S. Office of Naval Research.
NR 20
TC 10
Z9 10
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0733-8724
EI 1558-2213
J9 J LIGHTWAVE TECHNOL
JI J. Lightwave Technol.
PD OCT 15
PY 2014
VL 32
IS 20
SI SI
BP 3885
EP 3892
DI 10.1109/JLT.2014.2321481
PG 8
WC Engineering, Electrical & Electronic; Optics; Telecommunications
SC Engineering; Optics; Telecommunications
GA AX1JH
UT WOS:000346703000065
ER
PT J
AU Chun, C
Neta, B
AF Chun, Changbum
Neta, Beny
TI An analysis of a new family of eighth-order optimal methods
SO APPLIED MATHEMATICS AND COMPUTATION
LA English
DT Article
DE Newton's method; Iterative methods; Nonlinear equations; Order of
convergence; Extraneous fixed points; Basin of attraction
ID NONLINEAR EQUATIONS; MULTIPLE ROOTS; ORDER METHODS; ATTRACTION; BASINS
AB A new family of eighth order optimal methods is developed and analyzed. Numerical experiments show that our family of methods perform well and in many cases some members are superior to other eighth order optimal methods. It is shown how to choose the parameters to widen the basin of attraction. Published by Elsevier Inc.
C1 [Chun, Changbum] Sungkyunkwan Univ, Dept Math, Suwon 440746, 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).
NR 23
TC 11
Z9 11
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 OCT 15
PY 2014
VL 245
BP 86
EP 107
DI 10.1016/j.amc.2014.07.068
PG 22
WC Mathematics, Applied
SC Mathematics
GA AR5GU
UT WOS:000343613900008
ER
PT J
AU Patterson, BR
Rowenhorst, DJ
Tikare, V
DeHoff, RT
Kaub, TM
AF Patterson, Burton R.
Rowenhorst, David J.
Tikare, Veena
DeHoff, R. T.
Kaub, Tyler M.
TI Affinities for topological arrangements in grain structures
SO ACTA MATERIALIA
LA English
DT Article
DE 3-D characterization; Grain growth; Monte Carlo simulation; Titanium
alloys; Topology
ID ABOAV-WEAIRE LAW; COLD WORK; GROWTH; MICROSTRUCTURES; EVOLUTION;
TITANIUM; ALUMINUM; NETWORK; LEWIS; SIZE
AB Boundaries between neighboring grains with different numbers of faces exhibit a wide range of tendencies to occur in a structure, from high preference to high avoidance. These tendencies are described here in terms their contact affinity, which describes the extent to which an i-j faced grain pair actually occurs in the structure relative to that expected from statistically random contact. An affinity of unity indicates random occurrence and values above or below unity indicate the corresponding factor above or below random with which a particular pairing occurs. Grain contact affinities determined for both 3-D Monte Carlo grain growth simulations and experimental serial sectioned grains show similar trends of high affinity for contact between few- and many-faced grains, avoidance of contact between grains in similar face classes, and random contact between grains of intermediate face classes and all other classes. Contact affinities have been modeled in terms of the relative face curvatures, with high curvatures of opposite sign exhibiting the highest contact affinities, like signs the lowest, and relatively flat-faced grains showing near-random contact with all other classes. The measure of affinity is thus interpreted as the degree of stability or instability of boundaries against rapid face loss from topological events. The affinity approach overcomes a significant bias of the Aboav-Weaire analysis, which describes the average neighbors of face classes but is insensitive to the actual preference or avoidance for boundaries with other classes. The contact affinity term quantifies these tendencies. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Patterson, Burton R.; DeHoff, R. T.; Kaub, Tyler M.] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
[Rowenhorst, David J.] US Naval Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
[Tikare, Veena] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Patterson, BR (reprint author), Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
EM patters@mse.ufl.edu
FU NSF [DMR-1035188]; ONR Alloy and Joining Program under W. Mullins
Laboratory; ONR Alloy and Joining Program under Sandia National
Laboratory, a multiprogram laboratory; US Department of Energy's
National Nuclear Security Administration [DE-AC04-94AL85000]
FX The authors gratefully acknowledge financial support from NSF Grant No.
DMR-1035188, the ONR Alloy and Joining Program under W. Mullins, and
Sandia National Laboratories, a multiprogram laboratory managed and
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the US Department of Energy's National Nuclear
Security Administration under contract DE-AC04-94AL85000.
NR 35
TC 6
Z9 7
U1 3
U2 14
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 OCT 15
PY 2014
VL 79
BP 411
EP 420
DI 10.1016/j.actamat.2013.10.020
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA AQ3UG
UT WOS:000342718400039
ER
PT J
AU Hemmer, JR
Smith, PD
van Horn, M
Alnemrat, S
Mason, BP
de Alaniz, JR
Osswald, S
Hooper, JP
AF Hemmer, James R.
Smith, Patrick D.
van Horn, Matt
Alnemrat, Sufian
Mason, Brian P.
de Alaniz, Javier Read
Osswald, Sebastian
Hooper, Joseph P.
TI High Strain-Rate Response of Spiropyran Mechanophores in PMMA
SO JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
LA English
DT Article
DE compression; dyes/pigments; failure; fluorescence; impact resistance;
mechanical properties; sensors
ID POLYMER MECHANOCHEMISTRY; DYNAMIC FRACTURE; FORCE; ACTIVATION; STRESS;
COPOLYMERS
AB We report the high strain-rate response of a spiropyran (SP) mechanophore in poly(methylmethacrylate). Previous work on this system has demonstrated a reversible bond scission in the SP under local tensile force, converting it to a fluorescent merocyanine form. A Hopkinson bar was used to apply fast compressive loads at rates from 10(2) to 10(4) s(-1), resulting in significant activation of the SP near fracture surfaces. However, comparison with a similar thermochromic SP reveals that much of the observed activation likely arises from thermal effects during high-rate fracture. These results show the importance of a thermally active control system in distinguishing mechanochromic response during high-rate loading. Microscale fluorescence mapping of the fracture surfaces using a confocal Raman microspectrometer suggests that some distinct mechanical activation may be occurring in craze-like regions during fibril rupture. The thermal response of the SP is useful in its own right for characterizing plastic heating regions during dynamic fracture. Published 2014.
C1 [Hemmer, James R.; de Alaniz, Javier Read] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA.
[Smith, Patrick D.; van Horn, Matt; Alnemrat, Sufian; Osswald, Sebastian; Hooper, Joseph P.] Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
[Mason, Brian P.] Naval Surface Warfare Ctr, Res Dept, Indian Head Div, Indian Head, MD 20640 USA.
RP Hooper, JP (reprint author), Naval Postgrad Sch, Dept Phys, 833 Dyer Way, Monterey, CA 93943 USA.
EM jphooper@nps.edu
RI alnemrat, sufian/J-4511-2015
OI alnemrat, sufian/0000-0002-5143-4066
FU Defense Threat Reduction Agency Basic Sciences program [HDTRA139181]
FX This work was funded by the Defense Threat Reduction Agency Basic
Sciences program under grant number HDTRA139181 and managed by Su
Peiris. The authors would like to thank Joel Carney, Nancy Haegel, and
Markanthony Rivera for useful discussions.
NR 28
TC 7
Z9 7
U1 8
U2 66
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-6266
EI 1099-0488
J9 J POLYM SCI POL PHYS
JI J. Polym. Sci. Pt. B-Polym. Phys.
PD OCT 15
PY 2014
VL 52
IS 20
BP 1347
EP 1356
DI 10.1002/polb.23569
PG 10
WC Polymer Science
SC Polymer Science
GA AQ4CH
UT WOS:000342739300004
ER
PT J
AU Podpirka, AA
Twigg, ME
Tischler, JG
Magno, R
Bennett, BR
AF Podpirka, Adrian A.
Twigg, Mark E.
Tischler, Joseph G.
Magno, Richard
Bennett, Brian R.
TI Step graded buffer for (110) InSb quantum wells grown by molecular beam
epitaxy
SO JOURNAL OF CRYSTAL GROWTH
LA English
DT Article
DE Crystal morphology; Surfaces; Antimonides; Molecular beans epitaxy;
Semiconducting III-V materials
ID STRAINED-LAYER SUPERLATTICES; HYDROGEN-ASSISTED MBE; SPIN RELAXATION;
GAAS(110); GAAS; MORPHOLOGY; SEMICONDUCTORS; TRANSITIONS; KINETICS;
FILMS
AB We report on a two step buffer layer preparation for the growth of InSb quantum wells on a (110) GaAs surface. At each buffer layer step, layer conditions were optimized to produce smooth surfaces compatible with InSb quantum wells. Through varying growth rate, group V/III flux ratio, substrate temperature, and the addition of in situ annealing, we are able to grow In0.85Al0.15Sb on a GaAs substrate with an RMS surface roughness of approximately 2 nm. Surface morphology and cross-sectional transmission electron microscopy (TEM) were analyzed to understand the formation of threading dislocations, inclusions and dislocation filtering. This work presents an initial study for the growth of large lattice mismatched III-V materials on the (110) surface. Published by Elsevier B.V.
C1 [Podpirka, Adrian A.; Twigg, Mark E.; Tischler, Joseph G.; Magno, Richard; Bennett, Brian R.] Naval Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA.
RP Podpirka, AA (reprint author), Naval Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA.
EM adrian.podpirka.ctr@nrl.navy.mil
RI Bennett, Brian/A-8850-2008
OI Bennett, Brian/0000-0002-2437-4213
FU Office of Naval Research, United States
FX This work was funded by the Office of Naval Research, United States. The
authors thank Dr. Shawn Mack for comments and discussions.
NR 33
TC 2
Z9 2
U1 4
U2 27
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-0248
EI 1873-5002
J9 J CRYST GROWTH
JI J. Cryst. Growth
PD OCT 15
PY 2014
VL 404
BP 122
EP 129
DI 10.1016/j.jcrysgro.2014.07.014
PG 8
WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied
SC Crystallography; Materials Science; Physics
GA AO5VU
UT WOS:000341414600021
ER
PT J
AU Kopera, MA
Giraldo, FX
AF Kopera, Michal A.
Giraldo, Francis X.
TI Analysis of adaptive mesh refinement for IMEX discontinuous Galerkin
solutions of the compressible Euler equations with application to
atmospheric simulations
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Adaptive mesh refinement; Discontinuous Galerkin method; Non-conforming
mesh; IMEX; Compressible Euler equations; Atmospheric simulations
ID NAVIER-STOKES EQUATIONS; SHALLOW-WATER EQUATIONS; SPECTRAL-ELEMENT; GRID
REFINEMENT; MODEL; FLOWS; FORMULATION; ACCURACY; PARALLEL; WEATHER
AB The resolutions of interests in atmospheric simulations require prohibitively large computational resources. Adaptive mesh refinement (AMR) tries to mitigate this problem by putting high resolution in crucial areas of the domain. We investigate the performance of a tree-based AMR algorithm for the high order discontinuous Galerkin method on quadrilateral grids with non-conforming elements. We perform a detailed analysis of the cost of AMR by comparing this to uniform reference simulations of two standard atmospheric test cases: density current and rising thermal bubble. The analysis shows up to 15 times speed-up of the AMR simulations with the cost of mesh adaptation below 1% of the total runtime. We pay particular attention to the implicit-explicit (IMEX) time integration methods and show that the ARK2 method is more robust with respect to dynamically adapting meshes than BDF2. Preliminary analysis of preconditioning reveals that it can be an important factor in the AMR overhead. The compiler optimizations provide significant runtime reduction and positively affect the effectiveness of AMR allowing for speed-ups greater than it would follow from the simple performance model. (C) 2014 Elsevier Inc. All rights reserved.
C1 [Kopera, Michal A.; Giraldo, Francis X.] US Navy, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
RP Kopera, MA (reprint author), US Navy, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
EM makopera@nps.edu; fxgirald@nps.edu
OI Kopera, Michal/0000-0002-8192-8251
FU Office of Naval Research [PE-0602435N]; National Science Foundation
[121670]; Air Force Office of Scientific Research
FX The authors gratefully acknowledge the support of the Office of Naval
Research through program element PE-0602435N, the National Science
Foundation ( Division of Mathematical Sciences) through program element
121670, and the Air Force Office of Scientific Research through the
Computational Mathematics Program. The authors are grateful to Andreas
Muller and Simone Marras for constructive discussions that greatly
contributed to this paper.
NR 51
TC 20
Z9 20
U1 2
U2 14
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
EI 1090-2716
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD OCT 15
PY 2014
VL 275
BP 92
EP 117
DI 10.1016/j.jcp.2014.06.026
PG 26
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA AO4LG
UT WOS:000341308900006
ER
PT J
AU Villalobos, G
Bayya, S
Kim, W
Baker, C
Sanghera, J
Hunt, M
Sadowski, B
Miklos, F
Aggarwal, I
AF Villalobos, Guillermo
Bayya, Shyam
Kim, Woohong
Baker, Colin
Sanghera, Jas
Hunt, Michael
Sadowski, Bryan
Miklos, Fritz
Aggarwal, Ishwar
TI Low absorption magnesium aluminate spinel windows for high energy laser
applications
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID TRANSPARENT SPINEL
AB High energy laser (HEL) systems are currently being evaluated for various land, sea, and air based platforms. Some of these systems operate in or have to withstand harsh environment of sand storm, hurricane, and rain. The exit aperture on a HEL system operating in harsh environment can become the single point of failure. Current HEL systems operating in 1-2 mu m wavelength use fused silica windows which are at risk of damage in the theater. Rugged window materials such as sapphire, ALON, and spinel are currently being evaluated as a potential replacement. One of the major parameters in window selection apart from its ruggedness is its absorption loss coefficient at laser wavelength. This paper reports on 3 different methods to reduce absorption loss in spinel ceramic from 100,000 ppm/cm down to 75 ppm/cm. The results are compared with ALON and sapphire.
C1 [Villalobos, Guillermo; Bayya, Shyam; Kim, Woohong; Baker, Colin; Sanghera, Jas] Naval Res Lab, Washington, DC 20375 USA.
[Hunt, Michael] Univ Res Fdn, Greenbelt, MD 20770 USA.
[Sadowski, Bryan; Miklos, Fritz; Aggarwal, Ishwar] Sotera Def Solut Inc, Annapolis Jct, MD 20701 USA.
RP Villalobos, G (reprint author), Naval Res Lab, Code 5620, Washington, DC 20375 USA.
EM guillermo.villalobos@nrl.navy.mil
RI Baker, Colin/I-6657-2015
NR 23
TC 1
Z9 1
U1 2
U2 13
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
EI 2044-5326
J9 J MATER RES
JI J. Mater. Res.
PD OCT 14
PY 2014
VL 29
IS 19
SI SI
BP 2266
EP 2271
DI 10.1557/jmr.2014.184
PG 6
WC Materials Science, Multidisciplinary
SC Materials Science
GA AS8BR
UT WOS:000344475900004
ER
PT J
AU Alnemrat, S
Hooper, JP
AF Alnemrat, Sufian
Hooper, Joseph P.
TI Ab initio metadynamics simulations of oxygen/ligand interactions in
organoaluminum clusters
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID METAL ATOM CLUSTERS; ANION REACTIVITY; BUILDING-BLOCKS; CLOSED-SHELL;
ALUMINUM; O-2; DISSOLUTION; OXIDATION; MODEL; AL
AB Car-Parrinello molecular dynamics combined with a metadynamics algorithm is used to study the initial interaction of O-2 with the low-valence organoaluminum clusters Al4Cp4 (Cp=C5H5) and Al4Cp*(4) (Cp*=C-5[CH3](5)). Prior to reaction with the aluminum core, simulations suggest that the oxygen undergoes a hindered crossing of the steric barrier presented by the outer ligand monolayer. A combination of two collective variables based on aluminum/oxygen distance and lateral oxygen displacement was found to produce distinct reactant, product, and transition states for this process. In the methylated cluster with Cp* ligands, a broad transition state of 45 kJ/mol was observed due to direct steric interactions with the ligand groups and considerable oxygen reorientation. In the non-methylated cluster the ligands distort away from the oxidizer, resulting in a barrier of roughly 34 kJ/mol with minimal O-2 reorientation. A study of the oxygen/cluster system fixed in a triplet multiplicity suggests that the spin state does not affect the initial steric interaction with the ligands. The metadynamics approach appears to be a promising means of analyzing the initial steps of such oxidation reactions for ligand-protected clusters.
C1 [Alnemrat, Sufian; Hooper, Joseph P.] Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
RP Alnemrat, S (reprint author), Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
EM jphooper@nps.edu
RI alnemrat, sufian/J-4511-2015
OI alnemrat, sufian/0000-0002-5143-4066
FU Office of Naval Research [N0001414WX00160]; National Research Council
Research Associateship Award at Naval Postgraduate School
FX The authors would like to thank Dennis Mayo and Bryan Eichhorn for
useful discussions. This work was funded by the Office of Naval Research
Grant No. N0001414WX00160 (program director Clifford Bedford). This
research was performed while one of the authors (S. A.) held a National
Research Council Research Associateship Award at Naval Postgraduate
School.
NR 38
TC 5
Z9 5
U1 3
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD OCT 14
PY 2014
VL 141
IS 14
AR 144304
DI 10.1063/1.4897256
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA AS0SK
UT WOS:000343988500014
PM 25318719
ER
PT J
AU Basu, R
Garvey, A
AF Basu, Rajratan
Garvey, Alfred
TI Effects of ferroelectric nanoparticles on ion transport in a liquid
crystal
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID BATIO3 NANOPARTICLES; TRANSIENT CURRENT; ELECTROOPTIC PROPERTIES;
ROTATIONAL VISCOSITY; ELECTRIC-FIELD; DISPLAYS; CELLS; GENERATION;
CONDUCTION; DEVICES
AB A small quantity of BaTiO3 ferroelectric nanoparticles (FNPs) of 50 nm diameter was doped in a nematic liquid crystal (LC), and the free ion concentration was found to be significantly reduced in the LC+FNP hybrid compared to that of the pure LC. The strong electric fields, due to the permanent dipole moment of the FNPs, trapped some mobile ions, reducing the free ion concentration in the LC media. The reduction of free ions was found to have coherent impacts on the LC's conductivity, rotational viscosity, and electric field-induced nematic switching. (C) 2014 AIP Publishing LLC.
C1 [Basu, Rajratan; Garvey, Alfred] US Naval Acad, Soft Matter & Nanomat Lab, Dept Phys, Annapolis, MD 21402 USA.
RP Basu, R (reprint author), US Naval Acad, Soft Matter & Nanomat Lab, Dept Phys, Annapolis, MD 21402 USA.
EM basu@usna.edu
FU Office of Naval Research, Division 312: Electronics, Sensors and Network
Research [N0001414WX20791]
FX This work was supported by the Office of Naval Research, Division 312:
Electronics, Sensors and Network Research; Award No. N0001414WX20791.
NR 49
TC 14
Z9 14
U1 0
U2 14
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 OCT 13
PY 2014
VL 105
IS 15
AR 151905
DI 10.1063/1.4898581
PG 5
WC Physics, Applied
SC Physics
GA AS5ZK
UT WOS:000344344700025
ER
PT J
AU Staruch, M
Li, JF
Wang, Y
Viehland, D
Finkel, P
AF Staruch, M.
Li, J. F.
Wang, Y.
Viehland, D.
Finkel, P.
TI Giant magnetoelectric effect in nonlinear Metglas/PIN-PMN-PT
multiferroic heterostructure
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID COMPOSITES; MAGNETIZATION; SENSOR
AB In this paper, we demonstrate high converse magnetoelectric (ME) coupling in a Metglas/Pb (In1/2Nb1/2)O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PIN-PMN-PT) laminated ME composite by exploiting stress and field induced reversible ferroelectric-ferroelectric phase transitions in a relaxor ferroelectric single crystal. The approach exploits large transformational strain induced by low applied electric field in a PIN-PMN-PT crystal that was mechanically stressed close to a rhombohedral to orthorhombic phase transformation. The ME coefficient was enhanced by an order of magnitude as compared to the linear piezoelectric regime, with a maximum value of 1.3 x 10(-7) s m(-1) in non-resonant mode. This phenomenon can thus be exploited to provide improvements in the development of ME devices and magnetic sensors. (C) 2014 AIP Publishing LLC.
C1 [Staruch, M.] CNR, Naval Res Lab, Washington, DC 20375 USA.
[Li, J. F.; Wang, Y.; Viehland, D.] Virginia Tech, Blacksburg, VA 24061 USA.
[Finkel, P.] Naval Res Lab, Washington, DC 20375 USA.
RP Finkel, P (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM peter.finkel@nrl.navy.mil
RI Staruch, Margo/M-9260-2015; Wang, Yaojin/F-3748-2012
OI Staruch, Margo/0000-0003-3088-2553; Wang, Yaojin/0000-0003-2561-1855
FU Office of Naval Research (ONR); National Research Council under Research
Associateship Program
FX Funding for this project was provided by the Office of Naval Research
(ONR). M. Staruch's work at the Naval Research Laboratory was supported
in part by the National Research Council under the Research
Associateship Program.
NR 32
TC 14
Z9 14
U1 5
U2 79
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD OCT 13
PY 2014
VL 105
IS 15
AR 152902
DI 10.1063/1.4898039
PG 5
WC Physics, Applied
SC Physics
GA AS5ZK
UT WOS:000344344700053
ER
PT J
AU Glasbrenner, JK
Zutic, I
Mazin, II
AF Glasbrenner, J. K.
Zutic, I.
Mazin, I. I.
TI Theory of Mn-doped II-II-V semiconductors
SO PHYSICAL REVIEW B
LA English
DT Article
ID DILUTED MAGNETIC SEMICONDUCTORS; CURIE-TEMPERATURE; FERROMAGNETISM;
PHYSICS; MODEL
AB A recently discovered magnetic semiconductor Ba1-xKx(Zn1-yMny)(2)As-2, with its decoupled spin and charge doping, provides a unique opportunity to elucidate the microscopic origin of the magnetic interaction and ordering in dilute magnetic semiconductors (DMSs). We show that (i) the conventional density functional theory accurately describes this material, and (ii) the magnetic interaction emerges from the competition of the short-range superexchange and a longer-range interaction mediated by the itinerant As holes, coupled to Mn via the Schrieffer-Wolff p-d interaction representing an effective Hund's rule coupling J(H)(eff). The key difference between the classical double exchange and the actual interaction in DMSs is that an effective J(H)(eff), as opposed to the standard Hund's coupling J(H), depends on the Mn d-band position with respect to the Fermi level, and thus allows tuning of the magnetic interactions. The physically transparent description of this material may also be applicable in more complicated DMS systems.
C1 [Glasbrenner, J. K.] CNR, Naval Res Lab, Washington, DC 20375 USA.
[Zutic, I.] SUNY Buffalo, Dept Phys, New York, NY 14260 USA.
[Mazin, I. I.] Naval Res Lab, Washington, DC 20375 USA.
RP Glasbrenner, JK (reprint author), CNR, Naval Res Lab, Code 6393, Washington, DC 20375 USA.
RI Glasbrenner, James/K-5614-2015
OI Glasbrenner, James/0000-0003-2198-2309
FU Office of Naval Research (ONR) through the Naval Research Laboratory's
Basic Research Program; NRC program at NRL; DOE-BES [DE-SC0004890]; ONR
[N000141310754]
FX We are grateful to A. Petukhov, F. Ning, and C. Q. Jin for their useful
discussions. I. I. M. acknowledges funding from the Office of Naval
Research (ONR) through the Naval Research Laboratory's Basic Research
Program. J.K.G. acknowledges the support of the NRC program at NRL. I.Z.
was supported by DOE-BES Grant No. DE-SC0004890 (theory) and ONR Grant
No. N000141310754 (applications).
NR 36
TC 17
Z9 17
U1 8
U2 42
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD OCT 13
PY 2014
VL 90
IS 14
AR 140403
DI 10.1103/PhysRevB.90.140403
PG 5
WC Physics, Condensed Matter
SC Physics
GA AR7PI
UT WOS:000343771300003
ER
PT J
AU Aliev, AE
Mayo, NK
Baughman, RH
Avirovik, D
Priya, S
Zarnetske, MR
Blottman, JB
AF Aliev, Ali E.
Mayo, Nathanael K.
Baughman, Ray H.
Avirovik, Dragan
Priya, Shashank
Zarnetske, Michael R.
Blottman, John B.
TI Thermal management of thermoacoustic sound projectors using a
free-standing carbon nanotube aerogel sheet as a heat source
SO NANOTECHNOLOGY
LA English
DT Article
DE carbon nanotubes; thermoacoustics; thermal management; Kirchhoff's law
ID TRANSPARENT
AB Carbon nanotube (CNT) aerogel sheets produce smooth-spectra sound over a wide frequency range (1-10(5) Hz) by means of thermoacoustic (TA) sound generation. Protective encapsulation of CNT sheets in inert gases between rigid vibrating plates provides resonant features for the TA sound projector and attractive performance at needed low frequencies. Energy conversion efficiencies in air of 2% and 10% underwater, which can be enhanced by further increasing the modulation temperature. Using a developed method for accurate temperature measurements for the thin aerogel CNT sheets, heat dissipation processes, failure mechanisms, and associated power densities are investigated for encapsulated multilayered CNT TA heaters and related to the thermal diffusivity distance when sheet layers are separated. Resulting thermal management methods for high applied power are discussed and deployed to construct efficient and tunable underwater sound projector for operation at relatively low frequencies, 10 Hz-10 kHz. The optimal design of these TA projectors for high-power SONAR arrays is discussed.
C1 [Aliev, Ali E.; Mayo, Nathanael K.; Baughman, Ray H.] Univ Texas Dallas, Alan G MacDiarmid NanoTech Inst, Richardson, TX 75083 USA.
[Avirovik, Dragan; Priya, Shashank] Virginia Tech, Ctr Energy Harvesting Mat & Syst, Blacksburg, VA 24061 USA.
[Zarnetske, Michael R.; Blottman, John B.] Naval Undersea Warfare Ctr, Newport, RI USA.
RP Aliev, AE (reprint author), Univ Texas Dallas, Alan G MacDiarmid NanoTech Inst, Richardson, TX 75083 USA.
EM Ali.Aliev@utdallas.edu
FU US Office of Naval Research [N00014-14-1-0152, N00014-13-1-0180]; Air
Force Office of Scientific Research grant [FA9550-12-1-0211]; Robert A.
Welch Foundation Grant [AT-0029]
FX We thank Xavier Norberto Lepro Chavez (NanoTech Institute, UT Dallas)
for providing drawable MWNT forests. This research work was supported by
US Office of Naval Research grants N00014-14-1-0152 and
N00014-13-1-0180, Air Force Office of Scientific Research grant
FA9550-12-1-0211, and the Robert A. Welch Foundation Grant AT-0029.
NR 15
TC 4
Z9 4
U1 5
U2 64
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
EI 1361-6528
J9 NANOTECHNOLOGY
JI Nanotechnology
PD OCT 10
PY 2014
VL 25
IS 40
AR 405704
DI 10.1088/0957-4484/25/40/405704
PG 11
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA AQ0WQ
UT WOS:000342503800010
PM 25213658
ER
PT J
AU Wang, H
Han, DK
Ko, H
AF Wang, H.
Han, D. K.
Ko, H.
TI Multimodal image matching via dual-codebook-based self-similarity
hypercube feature descriptor and voting strategy
SO ELECTRONICS LETTERS
LA English
DT Article
ID REGISTRATION
AB An effective feature descriptor is proposed for multimodal local-image patch matching. The conventional self-similarity hypercube (SSH) fails in multimodal image matching due to different intensities of multimodal images. To mitigate this problem, a dual-codebook clustering is proposed for generating the descriptors. It is based on extracting a codebook, respectively, from visible and thermal images but sharing the same k-means clustering index of the local features of visible and thermal image patches. The experimental results show that the proposed approach effectively solves the multimodal image quantisation problem. Moreover, a voting strategy based on the proposed similarity family function facilitates the multimodal image matching more robustly compared with the conventional state-of-the-art methods.
C1 [Wang, H.; Ko, H.] Korea Univ, Sch Elect Engn, Seoul, South Korea.
[Han, D. K.] Off Naval Res, Arlington, VA 22217 USA.
RP Wang, H (reprint author), Korea Univ, Sch Elect Engn, Seoul, South Korea.
EM hsko@korea.ac.kr
FU Seoul RBD Program [WR080951]
FX This research was supported by Seoul R&BD Program (WR080951).
NR 7
TC 0
Z9 0
U1 2
U2 6
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 0013-5194
EI 1350-911X
J9 ELECTRON LETT
JI Electron. Lett.
PD OCT 9
PY 2014
VL 50
IS 21
BP 1518
EP 1519
DI 10.1049/el.2014.1802
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA AR0DS
UT WOS:000343237700017
ER
PT J
AU Ott, FD
Spiegel, LL
Norris, DJ
Erwin, SC
AF Ott, Florian D.
Spiegel, Leo L.
Norris, David J.
Erwin, Steven C.
TI Microscopic Theory of Cation Exchange in CdSe Nanocrystals
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID 1ST-PRINCIPLES CALCULATIONS; ION-EXCHANGE; III-V; SPECTROSCOPY;
DIFFUSION
AB Although poorly understood, cation-exchange reactions are increasingly used to dope or transform colloidal semiconductor nanocrystals (quantum dots). We use density-functional theory and kinetic Monte Carlo simulations to develop a microscopic theory that explains structural, optical, and electronic changes observed experimentally in Ag-cation-exchanged CdSe nanocrystals. We find that Coulomb interactions, both between ionized impurities and with the polarized nanocrystal surface, play a key role in cation exchange. Our theory also resolves several experimental puzzles related to photoluminescence and electrical behavior in CdSe nanocrystals doped with Ag.
C1 [Ott, Florian D.; Spiegel, Leo L.; Norris, David J.] ETH, Opt Mat Engn Lab, CH-8092 Zurich, Switzerland.
[Erwin, Steven C.] Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
RP Ott, FD (reprint author), ETH, Opt Mat Engn Lab, CH-8092 Zurich, Switzerland.
EM dnorris@ethz.ch; steve.erwin@nrl.navy.mil
RI Norris, David/F-4022-2010
FU Swiss National Science Foundation [200021-140617]; U.S. Office of Naval
Research through the Naval Research Laboratory's Basic Research Program
FX We thank Al. L. Efros, A. Sahu, and V. Holmberg for helpful discussions.
This work was supported by the Swiss National Science Foundation under
Award No. 200021-140617 and by the U.S. Office of Naval Research through
the Naval Research Laboratory's Basic Research Program (SCE).
Computations were performed at the ETH High-Performance Computing
Cluster Brutus and the DoD Major Shared Resource Center at AFRL.
NR 34
TC 23
Z9 23
U1 7
U2 59
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 7
PY 2014
VL 113
IS 15
AR 156803
DI 10.1103/PhysRevLett.113.156803
PG 5
WC Physics, Multidisciplinary
SC Physics
GA AQ4VD
UT WOS:000342797100013
PM 25375732
ER
PT J
AU Harmon, SR
McKinney, JD
AF Harmon, Sharon R.
McKinney, Jason D.
TI Broadband RF disambiguation in subsampled analog optical links via
intentionally-introduced sampling jitter
SO OPTICS EXPRESS
LA English
DT Article
ID MICROWAVE SIGNALS; GENERATION; LASERS
AB We introduce a novel technique for broadband RF disambiguation which exploits a known jitter imparted onto the sampling rate of an optical pulse source in a subsampled analog optical link. Coarse disambiguation to bandwidths equal to the sample rate is achieved using pure tones as example waveforms by comparing the amplitude of the jitter-induced sidebands relative to the measured signal within the fundamental Nyquist band (f(rep)/2). This sampling technique allows for ultra-wideband signal recovery with a single measurement. In a first-of-its-kind photonics demonstration we show reliable disambiguation for signals with center frequencies spanning 1 MHz - 40 GHz. (C) 2014 Optical Society of America
C1 [Harmon, Sharon R.] Sotera Def Solut, Herndon, VA 20171 USA.
[McKinney, Jason D.] US Naval Res Lab, SW, Washington, DC 20735 USA.
RP Harmon, SR (reprint author), Sotera Def Solut, Herndon, VA 20171 USA.
EM sharon.harmon.ctr@nrl.navy.mil
NR 15
TC 1
Z9 1
U1 2
U2 4
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD OCT 6
PY 2014
VL 22
IS 20
BP 23928
EP 23937
DI 10.1364/OE.22.023928
PG 10
WC Optics
SC Optics
GA AQ4IE
UT WOS:000342757000018
PM 25321970
ER
PT J
AU Hutchinson, MN
Frigo, NJ
Urick, VJ
AF Hutchinson, Meredith N.
Frigo, Nicholas J.
Urick, Vincent J.
TI Procedure for aligning polarization modulator link for amplitude
modulation applications
SO OPTICS EXPRESS
LA English
DT Article
ID MICROWAVE PHOTONIC LINK; SAGNAC LOOP
AB A procedure is detailed for aligning the transmitted output states of a polarization modulated signal to the analyzer states of a polarizing discriminator in an analog photonic link. The steps in the procedure insure optimal amplitude modulation in the link. Experimental results are presented for biasing in two ways: either the DC bias on the modulator or a rotatable half-wave plate can be used. The corresponding theory is included. (C) 2014 Optical Society of America
C1 [Hutchinson, Meredith N.; Frigo, Nicholas J.; Urick, Vincent J.] Naval Res Lab, Div Opt Sci, Washington, DC 20375 USA.
[Frigo, Nicholas J.] US Naval Acad, Dept Phys, Annapolis, MD 21402 USA.
RP Hutchinson, MN (reprint author), Naval Res Lab, Div Opt Sci, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM meredith.hutchinson@nrl.navy.mil
NR 16
TC 4
Z9 4
U1 0
U2 6
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD OCT 6
PY 2014
VL 22
IS 20
BP 24859
EP 24868
DI 10.1364/OE.22.024859
PG 10
WC Optics
SC Optics
GA AQ4IE
UT WOS:000342757000107
PM 25322059
ER
PT J
AU MacMahan, J
van de Kreeke, J
Reniers, A
Elgar, S
Raubenheimer, B
Thornton, E
Weltmer, M
Rynne, P
Brown, J
AF MacMahan, Jamie
van de Kreeke, Jacobus
Reniers, Ad
Elgar, Steve
Raubenheimer, Britt
Thornton, Ed
Weltmer, Micah
Rynne, Patrick
Brown, Jenna
TI Fortnightly tides and subtidal motions in a choked inlet
SO ESTUARINE COASTAL AND SHELF SCIENCE
LA English
DT Article
DE tidal choking; tide; nonlinear response; fortnightly response; subtidal
signal; tidal wave propagation; inlet
ID LAGOON; CHOKING
AB Amplitudes of semi-diurnal tidal fluctuations measured at an ocean inlet system decay nearly linearly by 87% between the ocean edge of the offshore ebb-tidal delta and the backbay. A monochromatic, dynamical model for a tidally choked inlet separately reproduces the evolution of the amplitudes and phases of the semi-diurnal and diurnal tidal constituents observed between the ocean and inland locations. However, the monochromatic model over-predicts the amplitude and under-predicts the lag of the lower-frequency subtidal and fortnightly motions observed in the backbay. A dimensional model that considers all tidal constituents simultaneously, balances the along-channel pressure gradient with quadratic bottom friction, and that includes a time-varying channel water depth, is used to show that that these model-data differences are associated with nonlinear interactions between the tidal constituents that are not included in non-dimensional, monochromatic models. In particular, numerical simulations suggest that the nonlinear interactions induced by quadratic bottom friction modify the amplitude and phase of the subtidal and fortnightly backbay response. This nonlinear effect on the low-requency (subtidal and fortnightly) motions increases with increasing high-frequency (semi-diurnal) amplitude. The subtidal and fortnightly motions influence water exchange processes, and thus backbay temperature and salinity. Published by Elsevier Ltd.
C1 [MacMahan, Jamie; Thornton, Ed; Weltmer, Micah; Brown, Jenna] Naval Postgrad Sch, Dept Oceanog, Monterey, CA 93933 USA.
[van de Kreeke, Jacobus; Reniers, Ad; Rynne, Patrick] Univ Miami, Appl Marine Phys, Miami, FL 33149 USA.
[Elgar, Steve; Raubenheimer, Britt] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
RP MacMahan, J (reprint author), Naval Postgrad Sch, Dept Oceanog, Monterey, CA 93933 USA.
EM jhmacmah@nps.edu
FU Office of Naval Research [N0001411WX20962, N0001412WX20498]
FX We thank the many people who helped, obtain the field observations
during both nice days and some fairly horrid days, the USACE Field
Research Facility for bathymetry and logistical support, and the Office
of Naval Research (N0001411WX20962; N0001412WX20498) for funding. We
thank the two anonymous reviewers for improving the clarity of this
work.
NR 13
TC 9
Z9 9
U1 0
U2 10
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0272-7714
EI 1096-0015
J9 ESTUAR COAST SHELF S
JI Estuar. Coast. Shelf Sci.
PD OCT 5
PY 2014
VL 150
SI SI
BP 325
EP 331
DI 10.1016/j.ecss.2014.03.025
PN B
PG 7
WC Marine & Freshwater Biology; Oceanography
SC Marine & Freshwater Biology; Oceanography
GA AW3YA
UT WOS:000346217800013
ER
PT J
AU Holland, RJ
Klose, JR
Deschamps, JR
Cao, Z
Keefer, LK
Saavedra, JE
AF Holland, Ryan J.
Klose, John R.
Deschamps, Jeffrey R.
Cao, Zhao
Keefer, Larry K.
Saavedra, Joseph E.
TI Direct Reaction of Amides with Nitric Oxide To Form Diazeniumdiolates
SO JOURNAL OF ORGANIC CHEMISTRY
LA English
DT Article
ID RELEASE; NO; DONORS; CHEMISTRY; AGENTS; HNO
AB We report the apparently unprecedented direct reaction of nitric oxide (NO) with amides to generate ions of structure R(C=O)NH-N(O)=NO-, with examples including R = Me (1a) or 3-pyridyl (1b). The sodium salts of both released NO in pH 7.4 buffer, with 37 degrees C half-lives of 1-3 min. As NO-releasing drug candidates, diazeniumdiolated amides would have the advantage of generating only 1 equiv of base on hydrolyzing exhaustively to NO, in contrast to their amine counterparts, which generate 2 equiv of base.
C1 [Holland, Ryan J.; Keefer, Larry K.] NCI, Drug Design Sect, Biol Chem Lab, Frederick, MD 21702 USA.
[Klose, John R.; Cao, Zhao; Saavedra, Joseph E.] Leidos Biomed Res Inc, Frederick Natl Lab Canc Res, Frederick, MD 21702 USA.
[Deschamps, Jeffrey R.] Naval Res Lab, Ctr Biomol Sci & Engn, Washington, DE 20375 USA.
RP Holland, RJ (reprint author), NCI, Drug Design Sect, Biol Chem Lab, Frederick, MD 21702 USA.
EM hollandrj@mail.nih.gov
RI Keefer, Larry/N-3247-2014
OI Keefer, Larry/0000-0001-7489-9555
FU National Cancer Institute (NCI), National Institutes of Health (NIH)
[HHSN261200800001E]; Intramural Research Program of the NIH, NCI, Center
for Cancer Research; NIDA [Y1-DA1101]; Naval Research Laboratory (NRL)
FX We thank Dr. Sergey Tarasov and Ms. Marzena A. Dyba (Biophysics Resource
in the Structural Biophysics Laboratory, Frederick National Laboratory
for Cancer Research) for assistance with HRMS. This project was funded
by the National Cancer Institute (NCI), National Institutes of Health
(NIH), under Contract HHSN261200800001E, and by the Intramural Research
Program of the NIH, NCI, Center for Cancer Research. The X-ray
crystallographic work was supported by NIDA through Interagency
Agreement #Y1-DA1101 with the Naval Research Laboratory (NRL).
NR 16
TC 2
Z9 2
U1 1
U2 10
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0022-3263
J9 J ORG CHEM
JI J. Org. Chem.
PD OCT 3
PY 2014
VL 79
IS 19
BP 9389
EP 9393
DI 10.1021/jo501670e
PG 5
WC Chemistry, Organic
SC Chemistry
GA AQ3US
UT WOS:000342719600047
PM 25210948
ER
PT J
AU Deng, Y
AF Deng, Yong
TI China: The Post-Responsible Power
SO WASHINGTON QUARTERLY
LA English
DT Article
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Deng, Y (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 43
TC 1
Z9 1
U1 1
U2 2
PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXFORDSHIRE, ENGLAND
SN 0163-660X
EI 1530-9177
J9 WASH QUART
JI Wash. Q.
PD OCT 2
PY 2014
VL 37
IS 4
BP 117
EP 132
DI 10.1080/0163660X.2014.1002159
PG 16
WC International Relations; Law
SC International Relations; Government & Law
GA CA2UL
UT WOS:000348763300001
ER
PT J
AU Fravel, MT
Twomey, CP
AF Fravel, M. Taylor
Twomey, Christopher P.
TI Projecting Strategy: The Myth of Chinese Counter-intervention
SO WASHINGTON QUARTERLY
LA English
DT Article
C1 [Fravel, M. Taylor] MIT, Secur Studies Program, Dept Polit Sci, Cambridge, MA 02139 USA.
[Twomey, Christopher P.] Naval Postgrad Sch, Dept Natl Secur Affairs, Monterey, CA 93943 USA.
RP Fravel, MT (reprint author), MIT, Secur Studies Program, Dept Polit Sci, Cambridge, MA 02139 USA.
NR 56
TC 0
Z9 0
U1 2
U2 4
PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXFORDSHIRE, ENGLAND
SN 0163-660X
EI 1530-9177
J9 WASH QUART
JI Wash. Q.
PD OCT 2
PY 2014
VL 37
IS 4
BP 171
EP 187
DI 10.1080/0163660X.2014.1002164
PG 17
WC International Relations; Law
SC International Relations; Government & Law
GA CA2UL
UT WOS:000348763300004
ER
PT J
AU Avramov-Zamurovic, S
Nelson, C
Malek-Madani, R
Korotkova, O
AF Avramov-Zamurovic, S.
Nelson, C.
Malek-Madani, R.
Korotkova, O.
TI Polarization-induced reduction in scintillation of optical beams
propagating in simulated turbulent atmospheric channels
SO WAVES IN RANDOM AND COMPLEX MEDIA
LA English
DT Article
ID COHERENT GAUSSIAN-BEAM; SCHELL-MODEL BEAMS; INTENSITY FLUCTUATIONS;
COMMUNICATION
AB It is experimentally demonstrated that the class of partially coherent, partially polarized optical beams can be efficiently used for reduction in scintillations on propagation through turbulent air. The experiment involving the electromagnetic beam generation and its interaction with turbulent air simulator is discussed in details. The collected data is in solid agreement with the recently published theoretical predictions.
C1 [Avramov-Zamurovic, S.] US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA.
[Malek-Madani, R.] US Naval Acad, Dept Math, Annapolis, MD 21402 USA.
[Nelson, C.] US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA.
[Korotkova, O.] Univ Miami, Dept Phys, Coral Gables, FL 33124 USA.
RP Avramov-Zamurovic, S (reprint author), US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA.
EM avramov@usna.edu
FU US ONR [N00189-14-T-0120]; US AFOSR [FA9550-12-1-0449]; ONR
[N0001413WX20152]
FX O. Korotkova's research is sponsored by US ONR (#N00189-14-T-0120) and
US AFOSR (#FA9550-12-1-0449). Svetlana Avramov-Zamurovic, Reza
Malek-Madani, and Charles Nelson are sponsored by ONR (N0001413WX20152).
NR 30
TC 16
Z9 16
U1 0
U2 5
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 1745-5030
EI 1745-5049
J9 WAVE RANDOM COMPLEX
JI Waves Random Complex Media
PD OCT 2
PY 2014
VL 24
IS 4
BP 452
EP 462
DI 10.1080/17455030.2014.944242
PG 11
WC Physics, Multidisciplinary
SC Physics
GA AS6YU
UT WOS:000344405900008
ER
PT J
AU Craven, R
Beverly, R
Allman, M
AF Craven, Ryan
Beverly, Robert
Allman, Mark
TI A Middlebox-Cooperative TCP for a non End-to-End Internet
SO ACM SIGCOMM COMPUTER COMMUNICATION REVIEW
LA English
DT Article; Proceedings Paper
CT SIGCOMM Conference
CY AUG 17-22, 2014
CL Chicago, IL
SP ACM SIGCOMM, Assoc Comp Machinery
DE TCP; Middlebox; Header Integrity; Header Modifications
AB Understanding, measuring, and debugging IP networks, particularly across administrative domains, is challenging. One particularly daunting aspect of the challenge is the presence of transparent middleboxes-which are now common in today's Internet. In-path middleboxes that modify packet headers are typically transparent to a TCP, yet can impact end-to-end performance or cause blackholes. We develop TCP HICCUPS to reveal packet header manipulation to both endpoints of a TCP connection. HICCUPS permits endpoints to cooperate with currently opaque middleboxes without prior knowledge of their behavior. For example, with visibility into end-to-end behavior, a TCP can selectively enable or disable performance enhancing options. This cooperation enables protocol innovation by allowing new IP or TCP functionality (e.g., ECN, SACK, Multipath TCP, Tcperypt) to be deployed without fear of such functionality being misconstrued, modified, or blocked along a path. HICCUPS is incrementally deployable and introduces no new options. We implement and deploy TCP HICCUPS across thousands of disparate Internet paths, highlighting the breadth and scope of subtle and hard to detect middlebox behaviors encountered. We then show how path diagnostic capabilities provided by HICCUPS can benefit applications and the network.
C1 [Craven, Ryan; Beverly, Robert] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Craven, R (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
EM rcraven@nps.edu; rbeverly@nps.edu; mallman@icir.org
NR 45
TC 1
Z9 1
U1 1
U2 4
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 0146-4833
EI 1943-5819
J9 ACM SIGCOMM COMP COM
JI ACM SIGCOMM Comp. Commun. Rev.
PD OCT
PY 2014
VL 44
IS 4
BP 151
EP 162
DI 10.1145/2619239.2626321
PG 12
WC Computer Science, Information Systems
SC Computer Science
GA CC7QZ
UT WOS:000350564600035
ER
PT J
AU Snow, AW
Ancona, MG
AF Snow, Arthur W.
Ancona, Mario G.
TI Sensitivity, Selectivity, and Nanodimensional Effects in Gold
Nanocluster Vapor Sensors
SO IEEE SENSORS JOURNAL
LA English
DT Article
DE Chemiresistor; chemiresistor transduction mechanism; deuterated analyte;
gold nanocluster; sensor selectivity; vapor sensor
ID NANOPARTICLE FILMS; CHEMIRESISTOR; METAL; RESISTIVITY; SYSTEM; MODEL
AB A chemiresistor vapor sensor based on electron transport through an ensemble of ligand-stabilized gold nanoclusters is made exceptionally sensitive and selective by terminal carboxylic acid functionalization of the alkanethiol ligand. The directionality of the response (conductance increase or decrease) is strongly dependent on the nanoscale dimensions of the gold core and ligand shell thickness. Films of gold nanoclusters composed of a 2-nm metal core with a 0.5-nm S(CH2)(5)COOH shell are compared with those based on an 8-nm core and a 1.5-nm S(CH2)(15) COOH shell. Sensitivity toward amine vapors covered spanned 4-5 orders of magnitude with a detection limit lower than 0.1 ppm and respective selectivity factors of 100x and 20x over interferent vapors. Sensor isotherm measurements on a series of trialkylamine vapors displayed a sensitivity dependence that correlates with vapor pressure. Comparative responses to deuterated and nondeuterated triethylamine vapor exposures were identical and ruled out a sensor transduction mechanism that couples analyte vibrational modes with electron tunneling between gold nanocluster cores.
C1 [Snow, Arthur W.; Ancona, Mario G.] Naval Res Lab, Washington, DC 20375 USA.
RP Snow, AW (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM arthur.snow@nrl.navy.mil
FU Office of Naval Research
FX This work was supported by the Office of Naval Research. The associate
editor coordinating the review of this paper and approving it for
publication was Prof. Srinivas Tadigadapa.
NR 24
TC 3
Z9 3
U1 4
U2 14
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 OCT
PY 2014
VL 14
IS 10
BP 3330
EP 3336
DI 10.1109/JSEN.2014.2322285
PG 7
WC Engineering, Electrical & Electronic; Instruments & Instrumentation;
Physics, Applied
SC Engineering; Instruments & Instrumentation; Physics
GA AY6PH
UT WOS:000347687600001
ER
PT J
AU Oliveira, LG
Lawrence, MW
AF Oliveira, L. G.
Lawrence, M. W.
TI Developing an ultrasound-guided peripheral intravenous access program
for emergency physicians, nurses and corpsmen (technicians) at a
military hospital
SO INTERNATIONAL EMERGENCY NURSING
LA English
DT Meeting Abstract
C1 [Oliveira, L. G.; Lawrence, M. W.] Naval Med Ctr Portsmouth, Portsmouth, VA USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1755-599X
EI 1878-013X
J9 INT EMERG NURS
JI Int. Emerg. Nurs.
PD OCT
PY 2014
VL 22
IS 4
BP 276
EP 276
PG 1
WC Nursing
SC Nursing
GA AX7LT
UT WOS:000347098200129
ER
PT J
AU Philo, L
Bower, R
You, D
AF Philo, Leonard
Bower, Richard
You, David
TI Joint Prosthesis Infection as a Potential Complication From Variceal
Band Ligation
SO AMERICAN JOURNAL OF GASTROENTEROLOGY
LA English
DT Meeting Abstract
CT 79th Annual Scientific Meeting of the
American-College-of-Gastroenterology
CY OCT 17-22, 2014
CL Philadelphia, PA
SP Amer Coll Gastroenterol
C1 [Philo, Leonard; Bower, Richard; You, David] NMCSD, San Diego, CA USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 0002-9270
EI 1572-0241
J9 AM J GASTROENTEROL
JI Am. J. Gastroenterol.
PD OCT
PY 2014
VL 109
SU 2
MA 1311
BP S386
EP S386
PG 1
WC Gastroenterology & Hepatology
SC Gastroenterology & Hepatology
GA AS6OR
UT WOS:000344383101537
ER
PT J
AU Schoenecker, S
Willett, P
Bar-Shalom, Y
AF Schoenecker, Steven
Willett, Peter
Bar-Shalom, Yaakov
TI Extreme-Value Analysis for ML-PMHT, Part 1: Threshold Determination
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID TARGETS
AB The Maximum Likelihood Probabilistic Multi-Hypothesis Tracker (ML-PMHT) can be used as a powerful multisensor, low-observable, multitarget active sonar tracker. It is a non-Bayesian algorithm that uses a generalized likelihood ratio test to differentiate between clutter and targets. Prior to this paper, the detection threshold used for target discrimination was determined either through trial and error or with lengthy Monte Carlo simulations. We present a new method for determining this threshold by assuming that clutter is uniformly distributed in the search space (which is one of the basic assumptions of the ML-PMHT algorithm) and then treating the log-likelihood ratio (LLR) as a random variable transformation. In this manner we can obtain an expression for the value of any random point on the likelihood surface caused by clutter. We then use extreme value theory to obtain an expression for the probability density function (PDF) of the peak point of the LLR surface due to clutter. From this peak PDF, we can then calculate a threshold based on some desired (small) false track acceptance probability.
C1 [Schoenecker, Steven] Naval Undersea Warfare Ctr, Sensors & Sonar Dept, Newport, RI 02841 USA.
[Willett, Peter; Bar-Shalom, Yaakov] Univ Connecticut, ECE Dept, Storrs, CT 06269 USA.
RP Schoenecker, S (reprint author), Naval Undersea Warfare Ctr, Sensors & Sonar Dept, 1176 Howell St, Newport, RI 02841 USA.
EM steven.schoenecker@navy.mil
FU ONR [N00014-10-10412, N00014-10-1-0029, N00014-13-1-0231]; ARO
[W911NF-06-1-0467]
FX Supported by ONR grants N00014-10-10412, N00014-10-1-0029,
N00014-13-1-0231, and ARO grant W911NF-06-1-0467.
NR 28
TC 5
Z9 5
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9251
EI 1557-9603
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD OCT
PY 2014
VL 50
IS 4
BP 2500
EP 2514
DI 10.1109/TAES.2014.130303
PG 15
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
Telecommunications
SC Engineering; Telecommunications
GA AX2RS
UT WOS:000346792500007
ER
PT J
AU Schoenecker, S
Luginbuhl, T
Willett, P
Bar-Shalom, Y
AF Schoenecker, Steven
Luginbuhl, Tod
Willett, Peter
Bar-Shalom, Yaakov
TI Extreme-Value Analysis for ML-PMHT, Part 2: Target Trackability
SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
LA English
DT Article
ID REVERBERATION; CLUTTER
AB The Maximum Likelihood Probabilistic Multi-Hypothesis Tracker (ML-PMHT) can be used as a powerful multisensor, low-observable, multitarget active tracker. It is a non-Bayesian algorithm that uses a generalized likelihood ratio test (GLRT) to differentiate between clutter and targets. We use a new method, initially developed to obtain the probability density function (pdf) of the maximum point in the ML-PMHT log-likelihood ratio (LLR) due to clutter, to now develop a pdf for the maximum value of the ML-PMHT LLR caused by a target. With expressions for the pdfs of the maximum points caused by both clutter (developed in a companion article) and a target, we can, for a given set of tracking parameters (signal-to-noise ratio, search volume, target measurement probability of detection, etc.), develop ML-PMHT "tracker operating characteristic" curves, similar to receiver operating characteristic curves for a detector. Since ML-PMHT can be thought of as an optimal algorithm in the sense that, as long as the target and the environment match the algorithm's assumptions, all the information from all the available measurements can be used, and no approximations are necessary to get the algorithm to function, the analysis presented in this paper offers for the first time part of the answer to the fundamental question: Can a particular target be tracked?
C1 [Schoenecker, Steven; Luginbuhl, Tod] Naval Undersea Warfare Ctr, Sensors & Sonar Dept, Newport, RI 02841 USA.
[Willett, Peter; Bar-Shalom, Yaakov] Univ Connecticut, Elect & Comp Engn Dept, Storrs, CT 06269 USA.
RP Schoenecker, S (reprint author), Naval Undersea Warfare Ctr, Sensors & Sonar Dept, 1176 Howell St, Newport, RI 02841 USA.
EM steven.schoenecker@navy.mil
FU Office of Naval Research (ONR) [N00014-10-10412, N00014-10-1-0029,
N00014-13-1-0231]; Army Research Office (ARO) [W911NF-06-1-0467]
FX Supported by Office of Naval Research (ONR) grants N00014-10-10412,
N00014-10-1-0029, N00014-13-1-0231, and Army Research Office (ARO) grant
W911NF-06-1-0467.
NR 24
TC 5
Z9 5
U1 0
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9251
EI 1557-9603
J9 IEEE T AERO ELEC SYS
JI IEEE Trans. Aerosp. Electron. Syst.
PD OCT
PY 2014
VL 50
IS 4
BP 2515
EP 2527
DI 10.1109/TAES.2014.130304
PG 13
WC Engineering, Aerospace; Engineering, Electrical & Electronic;
Telecommunications
SC Engineering; Telecommunications
GA AX2RS
UT WOS:000346792500008
ER
PT J
AU Smith, RK
Montgomery, MT
Persing, J
AF Smith, Roger K.
Montgomery, Michael T.
Persing, John
TI On steady-state tropical cyclones
SO QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
LA English
DT Article
DE hurricanes; tropical cyclones; typhoons; steady-state
ID AXISYMMETRICAL NUMERICAL-MODEL; SEA INTERACTION THEORY; MAXIMUM
INTENSITY; HURRICANE INTENSITY; DYNAMICS; SIMULATION; SENSITIVITY; EYE
AB We examine the physical constraints that must be satisfied to allow for a steady-state tropical cyclone in an isolated environment, paying particular attention to the need to replenish absolute angular momentum at exactly the rate at which it is consumed and to the vanishing of the spin-up function above the frictional boundary layer. We conclude that it is unlikely that these conditions will be met simultaneously and question whether globally steady-state tropical cyclone solutions have merit. The implications for previous studies are discussed.
C1 [Smith, Roger K.] Univ Munich, Inst Meteorol, D-80333 Munich, Germany.
[Montgomery, Michael T.; Persing, John] Naval Postgrad Sch, Dept Meteorol, Monterey, CA USA.
RP Smith, RK (reprint author), Univ Munich, Inst Meteorol, Theresienstr 37, D-80333 Munich, Germany.
EM roger.smith@lmu.de
FU NSF [AGS-0733380]
FX This article was begun during a visit by the authors to the Regional
Forecasting Centre in Darwin, Australia in January 2013. We thank the
then Acting Director, Todd Smith, and all the staff of the Centre for
their warm hospitality during our stay there. We also thank Jim
McWilliams for providing some provocative comments on an earlier version
of the manuscript. MTM acknowledges the support of NSF Grant
AGS-0733380.
NR 40
TC 8
Z9 8
U1 1
U2 3
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0035-9009
EI 1477-870X
J9 Q J ROY METEOR SOC
JI Q. J. R. Meteorol. Soc.
PD OCT
PY 2014
VL 140
IS 685
BP 2638
EP 2649
DI 10.1002/qj.2329
PN B
PG 12
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AW5YL
UT WOS:000346346700020
ER
PT J
AU Baggenstoss, PM
Kurth, F
AF Baggenstoss, Paul M.
Kurth, Frank
TI Comparing shift-autocorrelation with cepstrum for detection of burst
pulses in impulsive noise
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
AB The recently introduced shift method is applied to detect and characterize burst-pulse vocalizations produced by marine mammals. To this end, burst pulses are modeled as sequences of click-like events that are repeated after a certain inter-click interval (ICI). The shift method is used to first emphasize events that repeat within an input signal. Afterwards, the ICI can be estimated. A qualitative comparison of the method is made against classical cepstrum using real data. The detection performance is measured using random trials of simulated data with impulsive noise. It is shown that although the cepstrum outperforms in Gaussian noise at low signal-to-noise ratio, the shift method performs significantly better in impulsive noise.
C1 [Baggenstoss, Paul M.] Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
[Kurth, Frank] Fraunhofer FKIE, D-53343 Wachtberg, Germany.
RP Baggenstoss, PM (reprint author), Naval Undersea Warfare Ctr, 1176 Howell St, Newport, RI 02841 USA.
EM p.m.baggenstoss@ieee.org
FU ONR Marine Mammal Advanced Detection Classification and Localization
(ADCL) program; Living Marine Resources (LMR) program
FX The author would like to acknowledge support from both the ONR Marine
Mammal Advanced Detection Classification and Localization (ADCL) program
and the Living Marine Resources (LMR) program.
NR 14
TC 1
Z9 1
U1 0
U2 0
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 OCT
PY 2014
VL 136
IS 4
BP 1574
EP 1582
DI 10.1121/1.4894734
PG 9
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA AW0JF
UT WOS:000345977400026
PM 25324061
ER
PT J
AU Kloepper, LN
Gaudette, JE
Simmons, JA
Buck, JR
AF Kloepper, Laura N.
Gaudette, Jason E.
Simmons, James A.
Buck, John R.
TI Mouth gape angle has little effect on the transmitted signals of big
brown bats (Eptesicus fuscus)
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID ECHOLOCATING BATS; AUDITORY SCENE; TARGET RANGE; PERCEPTION; NEURONS;
SOUNDS; PREY
AB Bats perform high-resolution echolocation by comparing temporal and spectral features of their transmitted pulses to the received echoes. In complex environments with moving prey, dynamically adapting the transmitted pulses can increase the probability of successful target representation and interception. This study further investigates the adaptive vocal-motor strategies of big brown bats (Eptesicus fuscus). During stationary target detection experiments, echolocation sounds were simultaneously recorded with high-speed, infrared video to examine the relationship of mouth position and movement to pulse characteristics among bats. All three bats produced strobe groups, but the proportion and frequency characteristics of the strobe group pulses differed for individual bats. Additionally, mouth gape angle had little effect on the emitted pulse characteristics, which suggests that laryngeal mechanisms drive changes in emitted pulses. (C) 2014 Acoustical Society of America.
C1 [Kloepper, Laura N.; Simmons, James A.] Brown Univ, Dept Neurosci, Providence, RI 02912 USA.
[Gaudette, Jason E.] Naval Undersea Warfare Ctr, USW Weap Vehicles & Defens Syst Dept, Newport, RI 02841 USA.
[Kloepper, Laura N.; Buck, John R.] Univ Massachusetts, Dept Elect & Comp Engn, Dartmouth, MA 02747 USA.
RP Kloepper, LN (reprint author), Brown Univ, Dept Neurosci, 185 Meeting St, Providence, RI 02912 USA.
EM laura.kloepper@gmail.com
FU National Science Foundation Postdoctoral Research Fellowship in Biology
[DBI-1202833]; Independent In-house Laboratory Research (ILIR)
investments by NUWC; [N00014-09-1-0691]
FX The authors thank Victoria Ferreira and Dan Robitzski for help with
animal training and data collection, Ryan Himmelwright for help with
MATLAB software design, and Aidan Leonard for help with mouth angle
measurements. This work was supported by N00014-09-1-0691 to J.A.S., the
National Science Foundation Postdoctoral Research Fellowship in Biology
DBI-1202833 awarded to L.N.K., and the Independent In-house Laboratory
Research (ILIR) investments by NUWC to J.E.G.
NR 23
TC 3
Z9 3
U1 1
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 OCT
PY 2014
VL 136
IS 4
BP 1964
EP 1971
DI 10.1121/1.4895690
PG 8
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA AW0JF
UT WOS:000345977400060
PM 25324095
ER
PT J
AU Baturina, OA
Lu, Q
Padilla, MA
Xin, L
Li, WZ
Serov, A
Artyushkova, K
Atanassov, P
Xu, F
Epshteyn, A
Brintlinger, T
Schuette, M
Collins, GE
AF Baturina, Olga A.
Lu, Qin
Padilla, Monica A.
Xin, Le
Li, Wenzhen
Serov, Alexey
Artyushkova, Kateryna
Atanassov, Plamen
Xu, Feng
Epshteyn, Albert
Brintlinger, Todd
Schuette, Mike
Collins, Greg E.
TI CO2 Electroreduction to Hydrocarbons on Carbon-Supported Cu
Nanoparticles
SO ACS CATALYSIS
LA English
DT Article
DE CO2 electroreduction; rotating disk electrode; Faradaic efficiency;
copper nanoparticles; electrocatalytic activity; hydrocarbons; methane;
ethylene
ID SINGLE-CRYSTAL ELECTRODES; ELECTROCHEMICAL REDUCTION; COPPER ELECTRODE;
ELECTROCATALYTIC CONVERSION; AMBIENT-TEMPERATURE; DIOXIDE REDUCTION;
AQUEOUS-SOLUTIONS; SURFACE; OXIDE; SELECTIVITY
AB Activities of Cu nanopartides supported on carbon black (VC), single-wall carbon nanotubes (SWNTs), and Ketjen Black (KB) toward CO2 electroreduction to hydrocarbons (CH4, C2H2, C2H4, and C2H6) are evaluated using a sealed rotating disk electrode (RDE) setup coupled to a gas clu-omatograph (GC). Thin films of supported Cu catalysts are deposited on RDE tips following a procedure well-established in the fuel cell community. Lead (Pb) underpotential deposition (UPD) is used to determine the electrochemical surface area (ECSA) of thin films of 40 wt % Cu/VC, 20 wt % Cu/SWNT, 50 wt % Cu/KB, and commercial 20 wt % Cu/VC catalysts on glassy carbon electrodes. Faradaic efficiencies of four carbon-supported Cu catalysts toward CO2 electroreduction to hydrocarbons are compared to that of electrodeposited smooth Cu films. For all the catalysts studied, the only hydrocarbons detected by GC are CH4 and C2H4. The Cu nanoparticles are found to be more active toward C2H4 generation versus electrodeposited smooth copper films. For the supported Cu nanocatalysts, the ratio of C2H4/CH4 Faradaic efficiencies is believed to be a function of particle size, as higher ratios are observed for smaller Cu nanoparticles. This is likely due to an increase in the fraction of under-coordinated sites, such as corners, edges, and defects, as the nanopartides become smaller.
C1 [Baturina, Olga A.; Lu, Qin; Epshteyn, Albert; Collins, Greg E.] Naval Res Lab, Div Chem, Washington, DC 20375 USA.
[Brintlinger, Todd] Naval Res Lab, Mat Sci & Technol Div, Washington, DC 20375 USA.
[Padilla, Monica A.; Serov, Alexey; Artyushkova, Kateryna; Atanassov, Plamen] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA.
[Xin, Le; Li, Wenzhen] Michigan Technol Univ, Dept Chem & Biol Engn, Houghton, MI 49931 USA.
[Xu, Feng] Univ Oxford, Dept Chem, Wolfson Catalysis Ctr, Oxford OX1 3QR, England.
[Xu, Feng] Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China.
[Schuette, Mike] Sotera Inc, Herndon, VA 20171 USA.
RP Baturina, OA (reprint author), Naval Res Lab, Div Chem, Washington, DC 20375 USA.
EM olga.baturina@nrl.navy.mil
RI Artyushkova, Kateryna/B-4709-2008
OI Artyushkova, Kateryna/0000-0002-2611-0422
FU NRL HECU/MITCU program; National Science Foundation [CBET1235982];
Office of Naval Research
FX We are grateful to Dr. Karen Swider-Lyons for discussions of this work.
Financial support for this work was provided by the Office of Naval
Research. Monica Padilla's 2012 summer internship at NRL was supported
by NRL HECU/MITCU program. W. Li is grateful to the financial support
from the National Science Foundation (Award No. CBET1235982).
NR 42
TC 28
Z9 28
U1 29
U2 215
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 2155-5435
J9 ACS CATAL
JI ACS Catal.
PD OCT
PY 2014
VL 4
IS 10
BP 3682
EP 3695
DI 10.1021/cs500537y
PG 14
WC Chemistry, Physical
SC Chemistry
GA AU6TS
UT WOS:000345735200042
ER
PT J
AU Childs, DD
Clingan, MJ
Zagoria, RJ
Sirintrapun, J
Tangtiang, K
Anderson, A
Leyendecker, JR
AF Childs, David D.
Clingan, M. Jennings
Zagoria, Ronald J.
Sirintrapun, Joseph
Tangtiang, Kaan
Anderson, Andrea
Leyendecker, John R.
TI In-Phase Signal Intensity Loss in Solid Renal Masses on Dual-Echo
Gradient-Echo MRI: Association With Malignancy and Pathologic
Classification
SO AMERICAN JOURNAL OF ROENTGENOLOGY
LA English
DT Article
DE dual-echo gradient-echo MRI; hemosiderin; renal mass; renal MRI
ID FINE-NEEDLE-ASPIRATION; HEPATIC IRON DEPOSITION; CELL CARCINOMA; MINIMAL
FAT; PRELIMINARY EXPERIENCE; PAPILLARY; DIFFERENTIATION; ANGIOMYOLIPOMA;
OVERLOAD; T2
AB OBJECTIVE. The purposes of this study were to determine the prevalence of in-phase signal intensity loss on dual-echo gradient-echo MRI in solid renal masses using visual and quantitative techniques and to test for any association between in-phase signal intensity loss and pathologic classification.
MATERIALS AND METHODS. The renal MRI studies of 177 patients (192 solid masses consisting of 166 renal cell carcinomas [RCCs], four malignant non-RCCs, and 22 benign tumors) were qualitatively reviewed by two blinded readers for visual evidence of relative in-phase signal intensity loss. For lesions without visual evidence, whole-lesion ROIs were used to attempt quantification of subtle signal intensity loss between opposed- and in-phase images (signal intensity loss index).
RESULTS. Visual in-phase signal intensity loss was noted in 18% of clear cell RCC, 42% of papillary RCC, and no benign lesions. There was significant correlation between malignancy and visual signal intensity loss (Fisher exact test, p = 0.0092). Visual signal intensity loss was predictive of papillary RCC over clear cell RCC (odds ratio, 5.79; p = 0.0002) in logistic regression analysis of all RCCs, controlling for size. Quantitative assessment of remaining lesions provided no additional diagnostic benefit.
CONCLUSION. Visible in-phase signal intensity loss is relatively common within solid renal masses and was associated with RCC and particularly papillary RCC (among all RCCs) in our population. Quantitative analysis in lesions without visible signal intensity loss was not predictive of RCC. Further work should be performed to validate the usefulness of this additional imaging parameter to help characterize renal masses and to determine the impact of this finding on imaging techniques potentially sensitive to susceptibility effects.
C1 [Childs, David D.; Leyendecker, John R.] Wake Forest Univ, Bowman Gray Sch Med, Dept Radiol, Winston Salem, NC 27157 USA.
[Clingan, M. Jennings] Naval Med Ctr Portsmouth, Dept Radiol, Portsmouth, VA USA.
[Zagoria, Ronald J.] Univ Calif San Francisco, Dept Radiol & Biomed Imaging, San Francisco, CA 94143 USA.
[Sirintrapun, Joseph] Mem Sloan Kettering Canc Ctr, Dept Pathol, New York, NY 10021 USA.
[Tangtiang, Kaan] Thammasat Univ, Dept Pathol, Fac Med, Pathum Thani, Thailand.
[Anderson, Andrea] Wake Forest Univ, Bowman Gray Sch Med, Dept Biostat Sci, Winston Salem, NC 27109 USA.
RP Childs, DD (reprint author), Wake Forest Univ, Bowman Gray Sch Med, Dept Radiol, Med Ctr Blvd, Winston Salem, NC 27157 USA.
EM dchilds@wakehealth.edu
OI Sirintrapun, S. Joseph/0000-0003-2921-8831; Zagoria,
Ronald/0000-0001-6926-4627
NR 40
TC 6
Z9 6
U1 0
U2 2
PU AMER ROENTGEN RAY SOC
PI RESTON
PA 1891 PRESTON WHITE DR, SUBSCRIPTION FULFILLMENT, RESTON, VA 22091 USA
SN 0361-803X
EI 1546-3141
J9 AM J ROENTGENOL
JI Am. J. Roentgenol.
PD OCT
PY 2014
VL 203
IS 4
BP W421
EP W428
DI 10.2214/AJR.13.11113
PG 8
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA AU3OP
UT WOS:000345523500010
PM 25247971
ER
PT J
AU Qin, X
Direnzo, MS
Xu, MY
Duan, YL
AF Qin, Xin
Direnzo, Marco S.
Xu, Minya
Duan, Yilong
TI When do emotionally exhausted employees speak up? Exploring the
potential curvilinear relationship between emotional exhaustion and
voice
SO JOURNAL OF ORGANIZATIONAL BEHAVIOR
LA English
DT Article
DE emotional exhaustion; prohibitive voice; promotive voice; job security;
interactional justice climate; curvilinear; multi-level design
ID VOLUNTARY TURNOVER; CITIZENSHIP BEHAVIOR; JOB-PERFORMANCE; WORK;
RESOURCES; BURNOUT; ISSUES; CONSERVATION; ANTECEDENTS; PERCEPTIONS
AB Two studies were conducted to address the potential nonlinear relationship between emotional exhaustion and voice. Study 1 developed and tested a model rooted in conservation of resources theory in which responses to emotional exhaustion are determined by individual-level and group-level conditions that influence the perceived safety and efficacy of voice and drive prohibitive voice behaviors by giving rise to either resource-conservation-based or resource-acquisition-based motivation. Specifically, there was a curvilinear (U-shaped) relationship between emotional exhaustion and prohibitive voice under conditions of (i) high job security and (ii) high interactional justice climate, but a linearly negative relationship when these resources were low. Study 2 replicated and extended these findings to include an empirical examination of these effects on promotive versus prohibitive voice. Results confirmed the findings of Study 1, provided evidence of differences in the nomological networks of promotive and prohibitive voice, and indicated that prohibitive voice is more salient to the experience of high emotional strain. Implications of the findings and areas for future research are discussed. Copyright (C) 2014 John Wiley & Sons, Ltd.
C1 [Qin, Xin] Sun Yat Sen Univ, Sun Yat Sen Business Sch, Guangzhou, Guangdong, Peoples R China.
[Direnzo, Marco S.] Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA USA.
[Xu, Minya; Duan, Yilong] Peking Univ, Guanghua Sch Management, Beijing 100871, Peoples R China.
[Duan, Yilong] China Railway 16th Bur Grp Co Ltd, Beijing, Peoples R China.
RP Xu, MY (reprint author), Peking Univ, Guanghua Sch Management, Room 365, Beijing 100871, Peoples R China.
EM minyaxu@gsm.pku.edu.cn
NR 61
TC 7
Z9 8
U1 15
U2 59
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0894-3796
EI 1099-1379
J9 J ORGAN BEHAV
JI J. Organ. Behav.
PD OCT
PY 2014
VL 35
IS 7
BP 1018
EP 1041
DI 10.1002/job.1948
PG 24
WC Business; Psychology, Applied; Management
SC Business & Economics; Psychology
GA AU1XQ
UT WOS:000345411300008
ER
PT J
AU Shaffer, J
AF Shaffer, Jason
TI Cultivating National Identity through Performance: American Pleasure
Gardens and Entertainment
SO AMERICAN HISTORICAL REVIEW
LA English
DT Book Review
C1 [Shaffer, Jason] US Naval Acad, Annapolis, MD 21402 USA.
RP Shaffer, J (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 1
TC 0
Z9 0
U1 1
U2 1
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0002-8762
EI 1937-5239
J9 AM HIST REV
JI Am. Hist. Rev.
PD OCT
PY 2014
VL 119
IS 4
BP 1266
EP 1266
DI 10.1093/ahr/119.4.1266
PG 1
WC History
SC History
GA AT0AK
UT WOS:000344599100061
ER
PT J
AU Gingeras, R
AF Gingeras, Ryan
TI Healing the Nation: Prisoners of War, Medicine and Nationalism in
Turkey, 1914-1939
SO AMERICAN HISTORICAL REVIEW
LA English
DT Book Review
C1 [Gingeras, Ryan] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Gingeras, R (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 1
TC 0
Z9 0
U1 0
U2 2
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0002-8762
EI 1937-5239
J9 AM HIST REV
JI Am. Hist. Rev.
PD OCT
PY 2014
VL 119
IS 4
BP 1401
EP 1402
DI 10.1093/ahr/119.4.1401
PG 3
WC History
SC History
GA AT0AK
UT WOS:000344599100213
ER
PT J
AU Kulkarni, SS
Apte, UM
Evangelopoulos, NE
AF Kulkarni, Shailesh S.
Apte, Uday M.
Evangelopoulos, Nicholas E.
TI The Use of Latent Semantic Analysis in Operations Management Research
SO DECISION SCIENCES
LA English
DT Article
DE Big Data Analytics; Latent Semantic Analysis; Operations Management
Research; and Unstructured Text
ID AUTHOR COCITATION ANALYSIS; INFORMATION-SYSTEMS; INTELLECTUAL STRUCTURE;
CITATION/CO-CITATION; CONSUMER RESEARCH; DISCIPLINE; EVOLUTION; SCIENCE;
RETRIEVAL; KNOWLEDGE
AB In this article, we introduce the use of Latent Semantic Analysis (LSA) as a technique for uncovering the intellectual structure of a discipline. LSA is an emerging quantitative method for content analysis that combines rigorous statistical techniques and scholarly judgment as it proceeds to extract and decipher key latent factors. We provide a stepwise explanation and illustration for implementing LSA. To demonstrate LSA's ability to uncover the intellectual structure of a discipline, we present a study of the field of Operations Management. We also discuss a number of potential applications of LSA to show how it can be used in empirical Operations Management research, specifically in areas that can benefit from analyzing large volumes of unstructured textual data.
C1 [Kulkarni, Shailesh S.; Evangelopoulos, Nicholas E.] Univ N Texas, Dept Informat Technol & Decis Sci, Denton, TX 76201 USA.
[Apte, Uday M.] Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
RP Kulkarni, SS (reprint author), Univ N Texas, Dept Informat Technol & Decis Sci, 1307 W Highland, Denton, TX 76201 USA.
EM Shailesh.Kulkarni@unt.edu; umapte@nps.edu; Nick.Evangelopoulos@unt.edu
OI Evangelopoulos, Nicholas/0000-0001-9866-6828
NR 49
TC 7
Z9 7
U1 8
U2 31
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0011-7315
EI 1540-5915
J9 DECISION SCI
JI Decis. Sci.
PD OCT
PY 2014
VL 45
IS 5
BP 971
EP 994
DI 10.1111/deci.12095
PG 24
WC Management
SC Business & Economics
GA AS8BA
UT WOS:000344474200006
ER
PT J
AU Mikitchuk, D
Stollberg, C
Doron, R
Kroupp, E
Maron, Y
Strauss, HR
Velikovich, AL
Giuliani, JL
AF Mikitchuk, Dimitry
Stollberg, Christine
Doron, Ramy
Kroupp, Eyal
Maron, Yitzhak
Strauss, Henry R.
Velikovich, Alexander L.
Giuliani, John L.
TI Mitigation of Instabilities in a Z-Pinch Plasma by a Preembedded Axial
Magnetic Field
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Magnetic field effects; optical imaging; plasma pinch; plasma stability
AB The effects of an axial magnetic field on the development of instabilities during a z-pinch implosion are studied using 2-D images and interferometry. The measurements clearly show mitigation of magneto Rayleigh-Taylor instabilities with increased magnitude of the preembedded axial magnetic field. Introducing the axial magnetic field also gives rise to new structures, indicating an interaction between the azimuthal and axial fields.
C1 [Mikitchuk, Dimitry; Stollberg, Christine; Doron, Ramy; Kroupp, Eyal; Maron, Yitzhak] Weizmann Inst Sci, IL-76100 Rehovot, Israel.
[Strauss, Henry R.] HRS Fus, W Orange, NJ 07052 USA.
[Velikovich, Alexander L.; Giuliani, John L.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Mikitchuk, D (reprint author), Weizmann Inst Sci, IL-76100 Rehovot, Israel.
EM dimitry.mikitchuk@weizmann.ac.il; christine.stollberg@weizmann.ac.il;
ramy.doron@weizmann.ac.il; eyal.kroupp@weizmann.ac.il;
yitzhak.maron@weizmann.ac.il; hank@hrsfusion.com;
sasha.velikovich@nrl.navy.mil; john.giuliani@nrl.navy.mil
FU U.S.-Israel Binational Science Foundation [2012096]; DOE-Cornell
University Excellence Center (U.S.)
FX Manuscript received November 11, 2013; revised March 14, 2014; accepted
May 24, 2014. Date of publication June 16, 2014; date of current version
October 21, 2014. This work was supported by the U.S.-Israel Binational
Science Foundation under Grant 2012096 and by the DOE-Cornell University
Excellence Center (U.S.).
NR 5
TC 4
Z9 4
U1 0
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD OCT
PY 2014
VL 42
IS 10
SI SI
BP 2524
EP 2525
DI 10.1109/TPS.2014.2327094
PN 1
PG 2
WC Physics, Fluids & Plasmas
SC Physics
GA AS9FK
UT WOS:000344548300100
ER
PT J
AU Richardson, AS
Angus, JR
Swanekamp, SB
Ottinger, PF
Schumer, JW
AF Richardson, Andrew S.
Angus, Justin R.
Swanekamp, Stephen B.
Ottinger, Paul F.
Schumer, Joseph W.
TI Visualization of Magnetic Field Penetration in Multicomponent Plasma
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Magnetic fields; plasma simulation; plasmas
AB Magnetic pushing of plasmas is an important fundamental phenomena in plasma physics. In the presence of strong plasma-density gradients, Hall-magnetohydrodynamics forces can lead to penetration of the magnetic field into the plasma. For multicomponent plasmas, simulations show that the magnetic field can penetrate the heavy-ion component of the plasma while simultaneously pushing the light ions. Images are presented of the simulated plasma densities showing the resulting species separation.
C1 [Richardson, Andrew S.; Angus, Justin R.; Swanekamp, Stephen B.; Schumer, Joseph W.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Richardson, AS (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
EM steve.richardson@nrl.navy.mil
FU Naval Research Laboratory (NRL) Basic and Applied Research Program; DOD
High Performance Computing Modernization Program, NRL-DC Affiliated
Resource Center
FX This work was supported in part by the Naval Research Laboratory (NRL)
Basic and Applied Research Program and in part by the DOD High
Performance Computing Modernization Program, NRL-DC Affiliated Resource
Center.
NR 3
TC 3
Z9 3
U1 1
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD OCT
PY 2014
VL 42
IS 10
SI SI
BP 2552
EP 2553
DI 10.1109/TPS.2014.2331179
PN 1
PG 2
WC Physics, Fluids & Plasmas
SC Physics
GA AS9FK
UT WOS:000344548300114
ER
PT J
AU Patrick, MA
Joye, CD
De Lucia, FC
AF Patrick, Mark A.
Joye, Colin D.
De Lucia, Frank C.
TI Multimode illumination for speckle reduction and angle neutrality in
millimeter wave active imaging: range and time-resolved mode averaging
SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND
VISION
LA English
DT Article
ID CONCEALED-OBJECT DETECTION
AB Active illumination is an attractive approach for millimeter and submillimeter wave imaging because of its generally larger signal margins and capacity for range determination. However, the resultant speckle from diffuse targets and the requirement that specular targets have strategic angular alignment are significant shortcomings. As a result, many, if not most, demonstrations of active imaging have involved the use of strategically oriented specular targets. We have previously shown[J. Opt. Soc. Am. A29, 2643 (2012)] that spatially time-resolved modulated multimode mixing approaches mitigate these issues. In this paper, we extend this work to demonstrate the use of range resolved multimode mixing as an alternative means to provide statistically independent images for speckle reduction averaging. We also demonstrate the use of systematic illumination of spatial modes in a "grassy field" geometry. (C) 2014 Optical Society of America
C1 [Patrick, Mark A.; De Lucia, Frank C.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Joye, Colin D.] US Naval Res Lab, Washington, DC 20375 USA.
RP De Lucia, FC (reprint author), Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA.
EM delucia.2@osu.edu
FU Defense Advanced Research Projects Agency; Army Research Office; Office
of Naval Research
FX We would like to thank the Defense Advanced Research Projects Agency,
the Army Research Office, and the Office of Naval Research for their
support of this work.
NR 22
TC 1
Z9 1
U1 0
U2 1
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1084-7529
EI 1520-8532
J9 J OPT SOC AM A
JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis.
PD OCT
PY 2014
VL 31
IS 10
BP 2135
EP 2141
DI 10.1364/JOSAA.31.002135
PG 7
WC Optics
SC Optics
GA AT2RH
UT WOS:000344781600004
PM 25401236
ER
PT J
AU Flack, KA
Schultz, MP
AF Flack, Karen A.
Schultz, Michael P.
TI Roughness effects on wall-bounded turbulent flows
SO PHYSICS OF FLUIDS
LA English
DT Article
ID SURFACE-ROUGHNESS; TRANSITIONALLY ROUGH; LAYERS; RESISTANCE; SMOOTH;
SIMILARITY; REGIME; PLATES; PIPE
AB This paper outlines the authors' experimental research in rough-wall-bounded turbulent flows that has spanned the past 15 years. The results show that, in general, roughness effects are confined to the inner layer. In accordance with Townsend's Reynolds number similarity hypothesis, the outer layer is insensitive to surface condition except in the role it plays in setting the length and velocity scales for the outer flow. An exception to this can be two-dimensional roughness which has been observed in some cases to suffer roughness effects far from the wall. However, recent results indicate that similarity also holds for two-dimensional roughness provided the Reynolds number is large, and there is sufficient scale separation between the roughness length scale and the boundary layer thickness. The concept of similarity between smooth-and rough-wall flows is of great practical importance as most computational and analytical modeling tools rely on it either explicitly or implicitly in predicting flows over rough walls. Because of the observed similarity, the roughness function (Delta U+), or shift in the log layer, is a useful way of characterizing the roughness effect on the mean flow and the frictional drag. In the fully rough regime, it is shown that the hydraulic roughness length scale is related to the root-mean-square height (k(rms)) and skewness (s(k)) of the surface elevation probability density function. On the other hand, the onset of roughness effects is seen to be associated with the largest surface features which are typified by the peak-to-trough height (k(t)). Roughness function behavior in the transitionally rough regime varies significantly between roughness types. Since no "universal" roughness function exists, no single roughness length scale can characterize all roughness types in all the flow regimes. Despite this, research using roughness with a systematic variation in texture is ongoing in an effort to uncover surface parameters that lead to the variation in the frictional drag behavior witnessed in the transitionally rough regime.
C1 [Flack, Karen A.] US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
[Schultz, Michael P.] US Naval Acad, Dept Naval Architecture & Ocean Engn, Annapolis, MD 21402 USA.
RP Flack, KA (reprint author), US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
RI Schultz, Michael/C-3670-2008
FU Office of Naval Research
FX The authors would like to acknowledge the Office of Naval Research,
program manager Ron Joslin, for the financial support of this research.
We also appreciate the enlightening discussions over the years with
fellow roughness researchers, with special thanks to Lex Smits, Per-Age
Krogstad, and Ian Castro for sharing their data. Finally, we are very
indebted to the tremendous support we receive from the technical staff
in the Hydromechanics Laboratory and machine shop at the United States
Naval Academy.
NR 54
TC 11
Z9 11
U1 2
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-6631
EI 1089-7666
J9 PHYS FLUIDS
JI Phys. Fluids
PD OCT
PY 2014
VL 26
IS 10
AR 101305
DI 10.1063/1.4896280
PG 17
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA AS9YC
UT WOS:000344593300005
ER
PT J
AU Felker, CC
AF Felker, Craig C.
TI Information at Sea: Shipboard Command and Control in the US Navy, from
Mobile Bay to Okinawa
SO TECHNOLOGY AND CULTURE
LA English
DT Book Review
C1 [Felker, Craig C.] US Naval Acad, Dept Hist, Annapolis, MD 21402 USA.
RP Felker, CC (reprint author), US Naval Acad, Dept Hist, Annapolis, MD 21402 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU JOHNS HOPKINS UNIV PRESS
PI BALTIMORE
PA JOURNALS PUBLISHING DIVISION, 2715 NORTH CHARLES ST, BALTIMORE, MD
21218-4363 USA
SN 0040-165X
EI 1097-3729
J9 TECHNOL CULT
JI Technol. Cult.
PD OCT
PY 2014
VL 55
IS 4
BP 1027
EP 1028
PG 2
WC History & Philosophy Of Science
SC History & Philosophy of Science
GA AT3KX
UT WOS:000344834900032
ER
PT J
AU Mulvaney, SP
Sheehan, PE
AF Mulvaney, Shawn P.
Sheehan, Paul E.
TI Nature Inspires Sensors To Do More with Less
SO ACS NANO
LA English
DT Article
ID DNA; IMMOBILIZATION; ANTIBODIES; MONOLAYERS; BIOSENSORS; TONGUE
AB The world is filled with widely varying chemical, physical, and biological stimuli. Over millennia, organisms have refined their senses to cope with these diverse stimuli, becoming virtuosos in differentiating closely related antigens, handling extremes in concentration, resetting the spent sensing mechanisms, and processing the multiple data streams being generated. Nature successfully deals with both repeating and new stimuli, demonstrating great adaptability when confronted with the latter. Interestingly, nature accomplishes these feats using a fairly simple toolbox. The sensors community continues to draw inspiration from nature's example: just look at the antibodies used as biosensor capture agents or the neural networks that process multivariate data streams. Indeed, many successful sensors have been built by simply mimicking natural systems. However, some of the most exciting breakthroughs occur when the community moves beyond mimicking nature and learns to use nature's tools in innovative ways.
C1 [Mulvaney, Shawn P.; Sheehan, Paul E.] US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
RP Mulvaney, SP (reprint author), US Naval Res Lab, Div Chem, Washington, DC 20375 USA.
EM shawn.mulvaney@nrl.navy.mil
RI Sheehan, Paul/B-4793-2010
OI Sheehan, Paul/0000-0003-2668-4124
NR 20
TC 2
Z9 2
U1 1
U2 30
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1936-0851
EI 1936-086X
J9 ACS NANO
JI ACS Nano
PD OCT
PY 2014
VL 8
IS 10
BP 9729
EP 9732
DI 10.1021/nn505365b
PG 4
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA AS0FC
UT WOS:000343952600006
PM 25310518
ER
PT J
AU Hou, X
Smith, DA
Guillemot, L
Cheung, CC
Cognard, I
Craig, HA
Espinoza, CM
Johnston, S
Kramer, M
Reimer, O
Reposeur, T
Shannon, R
Stappers, BW
Weltevrede, P
AF Hou, X.
Smith, D. A.
Guillemot, L.
Cheung, C. C.
Cognard, I.
Craig, H. A.
Espinoza, C. M.
Johnston, S.
Kramer, M.
Reimer, O.
Reposeur, T.
Shannon, R.
Stappers, B. W.
Weltevrede, P.
TI Six faint gamma-ray pulsars seen with the Fermi Large Area Telescope
Towards a sample blending into the background
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE parallaxes; gamma rays: stars; pulsars: general
ID GALACTIC POPULATION; MILLISECOND PULSARS; SPACE-TELESCOPE; RADIO
TELESCOPE; DISCOVERY; PARAMETERS; CARINAE; CATALOG; WIND; SKY
AB Context. GeV gamma-ray pulsations from over 140 pulsars have been characterized using the Fermi Large Area Telescope, enabling improved understanding of the emission regions within the neutron star magnetospheres, and the contributions of pulsars to high energy electrons and diffuse gamma rays in the Milky Way. The first gamma-ray pulsars to be detected were the most intense and / or those with narrow pulses.
Aims. As the Fermi mission progresses, progressively fainter objects can be studied. In addition to more distant pulsars (thus probing a larger volume of the Galaxy), or ones in high background regions (thus improving the sampling uniformity across the Galactic plane), we detect pulsars with broader pulses or lower luminosity. Adding pulsars to our catalog with inclination angles that are rare in the observed sample, and / or with lower spindown power, will reduce the bias in the currently known gamma-ray pulsar population.
Methods. We use rotation ephemerides derived from radio observations to phase-fold gamma rays recorded by the Fermi Large Area Telescope, to then determine the pulse profile properties. Spectral analysis provides the luminosities and, when the signal-to-noise ratio allows, the cutoff energies. We constrain the pulsar distances by different means in order to minimize the luminosity uncertainties.
Results. We present six new gamma-ray pulsars with an eclectic mix of properties. Three are young, and three are recycled. They include the farthest, the lowest power, two of the highest duty-cycle pulsars seen, and only the fourth young gamma-ray pulsar with a radio interpulse. We discuss the biases existing in the current gamma-ray pulsar catalog, and steps to be taken to mitigate the bias.
C1 [Hou, X.; Smith, D. A.; Reposeur, T.] Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France.
[Guillemot, L.; Cognard, I.] Univ Orleans, CNRS, Lab Phys & Chim Environm & Espace, F-45071 Orleans 02, France.
[Cheung, C. C.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Craig, H. A.; Reimer, O.] Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.
[Craig, H. A.; Reimer, O.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Espinoza, C. M.] Pontificia Univ Catolica Chile, Fac Fis, Inst Astrofis, Santiago 22, Chile.
[Johnston, S.; Shannon, R.] Australia Telescope Natl Facil, CSIRO Astron & Space Sci, Epping, NSW 1710, Australia.
[Kramer, M.; Stappers, B. W.; Weltevrede, P.] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England.
[Kramer, M.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.
[Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria.
[Guillemot, L.; Cognard, I.] CNRS INSU, Observ Paris, Stn Radioastron Nancay, F-18330 Nancay, France.
RP Hou, X (reprint author), Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, BP120, F-33175 Gradignan, France.
EM xianhou.astro@gmail.com; smith@cenbg.in2p3.fr;
lucas.guillemot@cnrs-orleans.fr
RI Reimer, Olaf/A-3117-2013;
OI Reimer, Olaf/0000-0001-6953-1385; Shannon, Ryan/0000-0002-7285-6348
FU Commonwealth Government; Science and Technology Facilities Council of
the UK; Istituto Nazionale di Astrofisica in Italy; Centre National
d'Etudes Spatiales in France; Swift GI program [08-SWIFT508-0054]
FX The Nancay Radio Observatory is operated by the Paris Observatory,
associated with the French Centre National de la Recherche Scientifique
(CNRS). The Parkes radio telescope is part of the Australia Telescope
which is funded by the Commonwealth Government for operation as a
National Facility managed by CSIRO. We thank our colleagues for their
assistance with the radio timing observations. The Lovell Telescope is
owned and operated by the University of Manchester as part of the
Jodrell Bank Centre for Astrophysics with support from the Science and
Technology Facilities Council of the UK. The Fermi LAT Collaboration
acknowledges generous ongoing support from a number of agencies and
institutes that have supported both the development and the operation of
the LAT as well as scientific data analysis. These include the National
Aeronautics and Space Administration and the Department of Energy in the
United States, the Commissariat a l'Energie Atomique and the Centre
National de la Recherche Scientifique/Institut National de Physique
Nucleaire et de Physique des Particules in France, the Agenzia Spaziale
Italiana and the Istituto Nazionale di Fisica Nucleare in Italy, the
Ministry of Education, Culture, Sports, Science and Technology (MEXT),
High Energy Accelerator Research Organization (KEK) and Japan Aerospace
Exploration Agency (JAXA) in Japan, and the K. A. Wallenberg Foundation,
the Swedish Research Council and the Swedish National Space Board in
Sweden. Additional support for science analysis during the operations
phase is gratefully acknowledged from the Istituto Nazionale di
Astrofisica in Italy and the Centre National d'Etudes Spatiales in
France. We thank Jonathan Braine for useful discussions about the HI and
CO maps used to constrain the DM distances. C.C.C. was supported in part
by Swift GI program 08-SWIFT508-0054.
NR 58
TC 7
Z9 7
U1 0
U2 2
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
EI 1432-0746
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD OCT
PY 2014
VL 570
AR A44
DI 10.1051/0004-6361/201424294
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA AS3EE
UT WOS:000344158500095
ER
PT J
AU Rue, JP
Pickett, A
AF Rue, John-Paul
Pickett, Adam
TI Meniscal Repair and Transplantation in the Military Active-duty
Population
SO CLINICS IN SPORTS MEDICINE
LA English
DT Article
DE Knee; Meniscal repair; Arthroscopy; Military
ID CRUCIATE LIGAMENT RECONSTRUCTION; MEDIAL MENISCUS; FOLLOW-UP;
ARTHROSCOPIC REPAIR; AVASCULAR ZONE; ACCELERATED REHABILITATION;
ALLOGRAFT TRANSPLANTATION; FIBRIN CLOT; OUTSIDE-IN; INSIDE-OUT
AB Meniscal tears are more commonly reported in active-duty US military service members than in civilian patient populations. This article presents an overview of meniscal tears as they pertain to the active-duty military population, beginning with the anatomy and biomechanics of the meniscus, types of meniscal tears, and indications for repair. The commonly used techniques for meniscal repair and the success rates and complication of each technique are discussed. The most commonly used technique by the senior author is described, as well as the role for meniscal transplant for treating postmeniscectomy patients in the active-duty military population.
C1 [Rue, John-Paul] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
[Rue, John-Paul] US Naval Acad, Naval Hlth Clin Annapolis, Dept Orthopaed & Sports Med, Annapolis, MD 21402 USA.
[Pickett, Adam] Walter Reed Natl Mil Med Ctr, Dept Orthopaed, Bethesda, MD 20814 USA.
RP Rue, JP (reprint author), US Naval Acad, Naval Hlth Clin Annapolis, Dept Orthopaed & Sports Med, 250 Wood Rd, Annapolis, MD 21402 USA.
EM john-paul.rue@med.navy.mil
NR 62
TC 0
Z9 1
U1 0
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 0278-5919
EI 1556-228X
J9 CLIN SPORT MED
JI Clin. Sports Med.
PD OCT
PY 2014
VL 33
IS 4
BP 641
EP +
DI 10.1016/j.csm.2014.06.007
PG 14
WC Sport Sciences
SC Sport Sciences
GA AS7KJ
UT WOS:000344434800008
PM 25280614
ER
PT J
AU Petry, FE
Yager, RR
AF Petry, Frederick E.
Yager, Ronald R.
TI Fuzzy Concept Hierarchies and Evidence Resolution
SO IEEE TRANSACTIONS ON FUZZY SYSTEMS
LA English
DT Article
DE Congruence of decompositions; decomposition; evidence resolution; fuzzy
hierarchy; granularity measure; overlap measure; partitioning
ID PARTITIONS; DATABASES
AB Evidence resolution has been studied previously for crisp hierarchies and here we develop approaches for fuzzy concept hierarchies. Since fuzzy hierarchies are characterized by decompositions of their domains as opposed to partitions, properties and measures of decompositions are developed. Fuzzy complete and partial evidence resolution is defined and related to the valuation of evidence. Finally a for-and-against analysis is developed for the selection of which concept to choose in the generalization.
C1 [Petry, Frederick E.] Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
[Yager, Ronald R.] Iona Coll, Inst Machine Intelligence, New Rochelle, NY 10801 USA.
[Petry, Frederick E.] Univ Alabama, Dept EECS, Huntsville, AL USA.
[Petry, Frederick E.] Ohio State Univ, Dept EECS, Columbus, OH 43210 USA.
[Petry, Frederick E.] Tulane Univ, Dept EECS, New Orleans, LA 70118 USA.
[Petry, Frederick E.] Tulane Univ, Sch Engn, New Orleans, LA 70118 USA.
[Yager, Ronald R.] Natl Sci Fdn, Informat Sci Program, Arlington, VA 22230 USA.
[Yager, Ronald R.] Iona Coll, New Rochelle, NY 10801 USA.
[Yager, Ronald R.] New York Acad Sci, New York, NY USA.
RP Petry, FE (reprint author), Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
EM fpetry@nrlssc.navy.mil; yager@panix.com
FU Naval Research Laboratory's Base Program [0602435N]; ONR [N000141010121]
FX This work was supported in part by the Naval Research Laboratory's Base
Program, Program Element 0602435N and ONR Grant Award N000141010121.
NR 30
TC 1
Z9 2
U1 0
U2 7
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1063-6706
EI 1941-0034
J9 IEEE T FUZZY SYST
JI IEEE Trans. Fuzzy Syst.
PD OCT
PY 2014
VL 22
IS 5
BP 1151
EP 1161
DI 10.1109/TFUZZ.2013.2286412
PG 11
WC Computer Science, Artificial Intelligence; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA AT2GK
UT WOS:000344751200009
ER
PT J
AU Zhang, H
Raffo, D
Birkhltzer, T
Houston, D
Madachy, R
Munch, J
Sutton, SM
AF Zhang, He
Raffo, David
Birkhltzer, Thomas
Houston, Dan
Madachy, Raymond
Munch, Jurgen
Sutton, Stanley M., Jr.
TI Software process simulation-at a crossroads?
SO JOURNAL OF SOFTWARE-EVOLUTION AND PROCESS
LA English
DT Article
DE software process; systems process; process modeling; software process
simulation
AB Software process simulation (SPS) has been evolving over the past two decades after being introduced to the software engineering community in the 1980s. At that time the SPS technology attracted a great deal of interest from both academics and practitioners in the software process communityeven to the extent of being one of the recommended techniques for achieving multiple Key Process Areas of Level 4 of the Capability Maturity Model Integration. However, in recent years, the growth of SPS seems to have slowed along with the number of reported applications in industry. This article summarizes the special panel that was held during ICSSP 2012 whose goals were to assess whether this technology remains applicable to today's software engineering projects and challenges and to point out the most beneficial opportunities for future research and industry application. Copyright (c) 2014 John Wiley & Sons, Ltd.
C1 [Zhang, He] Nanjing Univ, Software Inst, State Key Lab Novel Software Technol, Nanjing 210008, Jiangsu, Peoples R China.
[Raffo, David] Portland State Univ, Sch Business Adm, Portland, OR 97207 USA.
[Birkhltzer, Thomas] Univ Appl Sci, Constance, Germany.
[Houston, Dan] Aerosp Corp, Comp & Software Div, El Segundo, CA 90245 USA.
[Madachy, Raymond] Naval Postgrad Sch, Dept Syst Engn, Monterey, CA USA.
[Munch, Jurgen] Univ Helsinki, Dept Comp Sci, SF-00510 Helsinki, Finland.
[Sutton, Stanley M., Jr.] IBM TJ Watson Res Ctr, Yorktown Hts, NY USA.
[Zhang, He] Nanjing Univ, Software Inst, Nanjing 210008, Jiangsu, Peoples R China.
RP Zhang, H (reprint author), Nanjing Univ, Software Inst, State Key Lab Novel Software Technol, Nanjing 210008, Jiangsu, Peoples R China.
EM he@software.nju.edu.cn
NR 17
TC 0
Z9 0
U1 1
U2 5
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 2047-7473
EI 2047-7481
J9 J SOFTW-EVOL PROC
JI J. Softw.-Evol. Proc.
PD OCT
PY 2014
VL 26
IS 10
SI SI
BP 923
EP 928
DI 10.1002/smr.1694
PG 6
WC Computer Science, Software Engineering
SC Computer Science
GA AS3AR
UT WOS:000344148200006
ER
PT J
AU Caldwell, JD
Kretinin, AV
Chen, YG
Giannini, V
Fogler, MM
Francescato, Y
Ellis, CT
Tischler, JG
Woods, CR
Giles, AJ
Hong, M
Watanabe, K
Taniguchi, T
Maier, SA
Novoselov, KS
AF Caldwell, Joshua D.
Kretinin, Andrey V.
Chen, Yiguo
Giannini, Vincenzo
Fogler, Michael M.
Francescato, Yan
Ellis, Chase T.
Tischler, Joseph G.
Woods, Colin R.
Giles, Alexander J.
Hong, Minghui
Watanabe, Kenji
Taniguchi, Takashi
Maier, Stefan A.
Novoselov, Kostya S.
TI Sub-diffractional volume-confined polaritons in the natural hyperbolic
material hexagonal boron nitride
SO NATURE COMMUNICATIONS
LA English
DT Article
ID PHONON POLARITONS; LIGHT-ABSORPTION; METAMATERIALS; RESONANCE;
INDEFINITE; HETEROSTRUCTURES; NANOSTRUCTURES; ULTRAVIOLET; RESONATORS;
PLASMONICS
AB Strongly anisotropic media, where the principal components of the dielectric tensor have opposite signs, are called hyperbolic. Such materials exhibit unique nanophotonic properties enabled by the highly directional propagation of slow-light modes localized at deeply sub-diffractional length scales. While artificial hyperbolic metamaterials have been demonstrated, they suffer from high plasmonic losses and require complex nanofabrication, which in turn induces size-dependent limitations on optical confinement. The low-loss, mid-infrared, natural hyperbolic material hexagonal boron nitride is an attractive alternative. Here we report on three-dimensionally confined 'hyperbolic polaritons' in boron nitride nanocones that support four series (up to the seventh order) modes in two spectral bands. The resonant modes obey the predicted aspect ratio dependence and exhibit high-quality factors (Q up to 283) in the strong confinement regime (up to lambda/86). These observations assert hexagonal boron nitride as a promising platform for studying novel regimes of light-matter interactions and nanophotonic device engineering.
C1 [Caldwell, Joshua D.; Tischler, Joseph G.] US Naval Res Lab, Washington, DC 20375 USA.
[Kretinin, Andrey V.; Woods, Colin R.; Novoselov, Kostya S.] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England.
[Chen, Yiguo; Giannini, Vincenzo; Francescato, Yan; Maier, Stefan A.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England.
[Chen, Yiguo; Hong, Minghui] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore.
[Fogler, Michael M.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
[Ellis, Chase T.; Giles, Alexander J.] NRL, NRC Postdoctoral Fellow, Washington, DC 20375 USA.
[Watanabe, Kenji; Taniguchi, Takashi] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan.
RP Caldwell, JD (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM joshua.caldwell@nrl.navy.mil
RI Caldwell, Joshua/B-3253-2008; Novoselov, Kostya/G-9581-2014; Kretinin,
Andrey/L-5122-2013; TANIGUCHI, Takashi/H-2718-2011; WATANABE,
Kenji/H-2825-2011
OI Caldwell, Joshua/0000-0003-0374-2168; Novoselov,
Kostya/0000-0003-4972-5371; WATANABE, Kenji/0000-0003-3701-8119
FU NRL Nanoscience Institute; NRC NRL Postdoctoral Fellowship Program;
EPSRC; Leverhulme Trust; National Research Foundation, Prime Minister's
Office, Singapore under its Competitive Research Program (CRP Award)
[NRF-CRP10-2012-04]; Engineering and Physical Sciences Research Council
(UK); Royal Society (UK); European Research Council; EC-FET European
Graphene Flagship; Office of Naval Research; University of California
Office of the President
FX Funding for NRL authors was provided by the NRL Nanoscience Institute.
J.D.C. carried out this work through the NRL Long-Term Training
(Sabbatical) Program at the University of Manchester. C. T. E. and
A.J.G. acknowledge support from the NRC NRL Postdoctoral Fellowship
Program. Y.F., S. A. M. and V. G. acknowledge support from EPSRC and
Leverhulme Trust. Y.C. and M. H. would like to acknowledge the support
from the National Research Foundation, Prime Minister's Office,
Singapore under its Competitive Research Program (CRP Award No.
NRF-CRP10-2012-04). C. R. W., A. V. K. and K.S.N. acknowledge support
from the Engineering and Physical Sciences Research Council (UK), The
Royal Society (UK), European Research Council and EC-FET European
Graphene Flagship. M. M. F. acknowledges support from the Office of
Naval Research and the University of California Office of the President.
J.D.C. would like to thank Dr Jeremy Robinson and Dr Igor Vurgaftman of
NRL for helpful discussions and comments.
NR 51
TC 86
Z9 86
U1 16
U2 107
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2041-1723
J9 NAT COMMUN
JI Nat. Commun.
PD OCT
PY 2014
VL 5
AR 5221
DI 10.1038/ncomms6221
PG 9
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA AS0QQ
UT WOS:000343983000002
PM 25323633
ER
PT J
AU Chavez, D
Klapotke, TM
Parrish, D
Piercey, DG
Stierstorfer, J
AF Chavez, David
Klapoetke, Thomas M.
Parrish, Damon
Piercey, Davin G.
Stierstorfer, Joerg
TI The Synthesis and Energetic Properties of
3,4-Bis(2,2,2-trinitroethylamino)furazan (BTNEDAF)
SO PROPELLANTS EXPLOSIVES PYROTECHNICS
LA English
DT Article
DE Explosives; Furazans; Trinitroethyl; HEDM
ID SET MODEL CHEMISTRY; SALTS
AB Energetic furazan 3,4-bis(trinitroethylamino)furazan (BTNEDAF) was synthesized in 70% yield. BTNEDAF was characterized as an energetic material in terms of performance, mechanical sensitivity, and thermal stability. BTNEDAF was crystallized from various solvents resulting in multiple polymorphs with varying densities. Some of these polymorphs were characterized with respect to their sensitivity properties. Additionally, the performance of these different polymorphs were calculated using the EXPLO5 code. BTNEDAF was also characterized by vibrational spectroscopy, multinuclear NMR spectroscopy, elemental analysis, scanning electron microscopy (SEM), and calorimetric experiments.
C1 [Chavez, David; Piercey, Davin G.] Los Alamos Natl Lab, Weap Expt Div, Los Alamos, NM 87545 USA.
[Klapoetke, Thomas M.; Piercey, Davin G.; Stierstorfer, Joerg] Univ Munich, Dept Chem, D-81377 Munich, Germany.
[Klapoetke, Thomas M.] Univ Maryland, Dept Mech Engn, UMD, CECD, College Pk, MD 20742 USA.
[Parrish, Damon] US Navy, Res Lab, Struct Matter Lab, Washington, DC 20375 USA.
RP Chavez, D (reprint author), Los Alamos Natl Lab, Weap Expt Div, POB 1663, Los Alamos, NM 87545 USA.
EM dechavez@lanl.gov
RI Stierstorfer, Joerg/B-5261-2015; Klapoetke, Thomas/B-6055-2014
OI Stierstorfer, Joerg/0000-0002-2105-1275; Klapoetke,
Thomas/0000-0003-3276-1157
FU Ludwig-Maximilian University of Munich (LMU); Fonds der Chemischen
Industrie (FCI); European Research Office (ERO) of the U.S. Army
Research Laboratory (ARL); Armament Research, Development and
Engineering Center (ARDEC) [W911NF-09-2-0018, W911NF-09-1-0120,
W011NF-09-1-0056]; Joint Munitions Technology Development Program;
Office of Naval Research [N00014-11-AF-0-0002]
FX Financial support of this work by the Ludwig-Maximilian University of
Munich (LMU), the Fonds der Chemischen Industrie (FCI), the European
Research Office (ERO) of the U.S. Army Research Laboratory (ARL) and the
Armament Research, Development and Engineering Center (ARDEC) under
contract nos. W911NF-09-2-0018, W911NF-09-1-0120 and W011NF-09-1-0056 is
gratefully acknowledged. The authors acknowledge collaborations with Dr.
Mila Krupka (OZM Research, Czech Republic) in the development of new
testing and evaluation methods for energetic materials and with Dr.
Muhamed Sucesca (Brodarski Institute, Croatia) in the development of new
computational codes to predict the detonation and propulsion parameters
of novel explosives. We are indebted to and thank Drs. Betsy M. Rice and
Brad Forch (ARL, Aberdeen, Proving Ground, MD). Stefan Huber is thanked
for assistance with sensitivity measurements. The authors (D. E. C.)
would also like to thank the Joint Munitions Technology Development
Program for funding. D. E. C. would also like to thank Anna Giambra,
Daniel Prestion, Mary Sandstrom, Jose Archuleta, Bettina Reardon, and
Greg Long for performing the sensitivity characterization and testing.
We (D. E. C. and D. A. P.) would also like to thank the Office of Naval
Research (Award No. N00014-11-AF-0-0002).
NR 42
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Z9 8
U1 2
U2 36
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 0721-3115
EI 1521-4087
J9 PROPELL EXPLOS PYROT
JI Propellants Explos. Pyrotech.
PD OCT
PY 2014
VL 39
IS 5
BP 641
EP 648
DI 10.1002/prep.201300135
PG 8
WC Chemistry, Applied; Engineering, Chemical
SC Chemistry; Engineering
GA AS0MD
UT WOS:000343970200003
ER
PT J
AU Montgomery, MT
Zhang, JA
Smith, RK
AF Montgomery, Michael T.
Zhang, Jun A.
Smith, Roger K.
TI An analysis of the observed low-level structure of rapidly intensifying
and mature hurricane Earl (2010)
SO QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
LA English
DT Article
DE hurricanes; typhoons; conventional spin-up mechanism; boundary-layer
spin-up mechanism; thermodynamic structure; surface enthalpy fluxes;
GRIP
ID EQUIVALENT POTENTIAL TEMPERATURE; LAYER WIND STRUCTURE; BOUNDARY-LAYER;
TROPICAL CYCLONES; MAXIMUM INTENSITY; INNER-CORE; PART I; KINEMATIC
STRUCTURE; GPS DROPWINDSONDE; ISABEL 2003
AB We examine dynamic and thermodynamic aspects of Atlantic hurricane Earl (2010) during its intensification and mature phases over four days of intensive measurements. During this period, Earl underwent an episode of rapid intensification, maturity, secondary eyewall replacement, re-intensification and the early part of its decline. The observations are used to appraise elements of a new model for tropical-cyclone intensification. The results affirm the conventional (vortex interior) and boundary-layer spin-up mechanisms that form dynamical elements of the azimuthally averaged view of the new intensification model. The average maximum tangential winds beneath the eyewall are found to exceed the gradient wind by between 20 and 60%. The results suggest also that the gradient wind balance approximation in the low-level vortex interior above the strong inflow layer may not be as accurate in the inner-core region of a tropical cyclone during its intensification as has been widely held. An analysis of the low-level thermodynamic structure affirms the radial increase of moist equivalent potential temperature, (e), with decreasing radius during the intensification process, a necessary ingredient of the new model for maintaining convective instability in the presence of a warming upper troposphere. An unanticipated finding is the discovery of an unmixed boundary layer in terms of (e) within several hundred kilometres of the vortex centre. In the inner-core region, this finding is not consistent with the axisymmetric eruption of the boundary layer into the eyewall unless there are non-conservative (eddy) processes acting to modify the entropy of ascending air.
C1 [Montgomery, Michael T.] Naval Postgraduate Sch, Dept Meteorol, Monterey, CA 93943 USA.
[Zhang, Jun A.] NOAA Hurricane Res Div, Miami, FL USA.
[Smith, Roger K.] Univ Munich, Meteorol Inst, D-81377 Munich, Germany.
RP Montgomery, MT (reprint author), Naval Postgraduate Sch, Dept Meteorol, Monterey, CA 93943 USA.
EM mtmontgo@nps.edu
RI Zhang, Jun/F-9580-2012
FU NSF [AGS-0733380]; NASA [NNH09AK561, NNG11PK021, NNG09HG031]; NOAA's
Hurricane Forecast and Improvement Program (HFIP)
FX We acknowledge NASA and Ramesh Kakar for their support of the GRIP
experiment. MTM acknowledges the support of NSF AGS-0733380 and NASA
grants NNH09AK561, NNG11PK021 and NNG09HG031. JAZ acknowledges the
support from NOAA's Hurricane Forecast and Improvement Program (HFIP).
We want to thank Sim Aberson and Sylvie Lorsolo for providing the radar
composite data for each Earl flight. JAZ is grateful also to Robert
Rogers and Paul Reasor for helpful discussions. Finally, we would like
to thank Dave Raymond and Jonathan Vigh for their perceptive and
constructive reviews.
NR 69
TC 19
Z9 20
U1 1
U2 5
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0035-9009
EI 1477-870X
J9 Q J ROY METEOR SOC
JI Q. J. R. Meteorol. Soc.
PD OCT
PY 2014
VL 140
IS 684
BP 2132
EP 2146
DI 10.1002/qj.2283
PN A
PG 15
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA AS6WN
UT WOS:000344400200004
ER
PT J
AU Teague, WJ
Wijesekera, HW
Jarosz, E
Lugo-Fernandez, A
Hallockc, ZR
AF Teague, W. J.
Wijesekera, H. W.
Jarosz, E.
Lugo-Fernandez, A.
Hallockc, Z. R.
TI Wavelet analysis of near-inertial currents at the East Flower Garden
Bank
SO CONTINENTAL SHELF RESEARCH
LA English
DT Article
DE East Flower Garden Bank; Currents; Inertial Oscillations;
Temperature/salinity; ADCP; Northwestern Gulf of Mexico (27-28N, 93-94W)
ID TEXAS-LOUISIANA SHELF; CONTINENTAL-SHELF; TIME-SERIES; INNER SHELF;
SEA-BREEZE; OSCILLATIONS; OCEAN; GULF; MOTIONS; DRIVEN
AB Near-inertial currents (NICs) often dominate the mean circulation at the East Flower Garden Bank (EFGB), part of the Flower Garden Banks National Marine Sanctuary. The EFGB, one of several submerged coral reefs, is located in the northwestern Gulf of Mexico, about 190 km southeast of Galveston, Texas. The bank is about 6 km wide in the east west direction and rises to within about 20 m from the surface. NICs near the EFGB are described using current data from 5 acoustic Doppler current profilers that were moored at the edges of the bank and on top of the bank for about a year. A wavelet analysis was used in order to better describe the nonstationarity of the NICs. NICs were strongest during spring and summer due to their near resonant response with sea breeze and the shallowness of the mixed layer, and exhibited a first-baroclinic-mode vertical structure. NICS were generally larger near the surface and extended to the bottom on the west side of the EFGB but only to within about 20 m of the bottom on the eastern side of the bank. NIC ellipses were nearly circular and rotated clockwise above the top of the EFGB but became flatter and aligned with the bathymetry with increasing depth; occasionally, on the eastern side of the bank, the NIC vectors rotated counterclockwise due to probable effects of lee vortices arising from the mean flow interacting with the bank. Most energy input by the wind at the surface was likely transferred downward through divergence of the meridional flow against the coastal boundary. The inertial currents were at times more energetic than the mean flow, and often accounted for more than 50% of the total current energy. Published by Elsevier Ltd.
C1 [Teague, W. J.; Wijesekera, H. W.; Jarosz, E.] Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
[Lugo-Fernandez, A.] Bur Ocean Energy Management, New Orleans, LA 70123 USA.
[Hallockc, Z. R.] NVis Solut Inc, Bay St Louis, MS 39520 USA.
RP Teague, WJ (reprint author), Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
EM William.Teague@nrlssc.navy.mil
FU Bureau of Ocean Energy Management (BOEM) [M10PG00038]; Office of Naval
Research in a Naval Research Laboratory (NRL) [0601153N]
FX This work was sponsored by the Bureau of Ocean Energy Management (BOEM;
formerly Minerals Management Service) in the project referred to as
"Currents Over Banks (COB)" through Interagency Agreement No. M10PG00038
and by the Office of Naval Research in a Naval Research Laboratory (NRL)
project referred to as "Mixing Over Rough Topography (MORT)" under
program element 0601153N. The measurements were made in cooperation with
the Flower Garden Banks National Marine Sanctuary (administered by the
National Oceanic and Atmospheric Administration (NOAA)).
NR 35
TC 3
Z9 3
U1 3
U2 10
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0278-4343
EI 1873-6955
J9 CONT SHELF RES
JI Cont. Shelf Res.
PD OCT 1
PY 2014
VL 88
BP 47
EP 60
DI 10.1016/j.csr.2014.06.013
PG 14
WC Oceanography
SC Oceanography
GA AR8TB
UT WOS:000343846100005
ER
PT J
AU Cunha, JM
Miller, T
AF Cunha, Jesse M.
Miller, Trey
TI Measuring value-added in higher education: Possibilities and limitations
in the use of administrative data
SO ECONOMICS OF EDUCATION REVIEW
LA English
DT Article
DE Higher education; Value-added; Administrative data; Graduation;
Persistence; Earnings
ID COLLEGE; EARNINGS; UNIVERSITY; RETURNS
AB This paper develops a general methodology for measuring the value added of institutions of higher education using commonly available administrative data. Our approach recognizes the data limitations and selection problems inherent in higher education, and highlights the challenges these issues pose for education policy. Combining information from different administrative sources in the state of Texas, we follow the universe of Texas college applicants from the time of application (pre-enrollment) through public college and into the labor market. In specifications that do not control for selection, we find large, significant differences across colleges in terms of persistence, graduation, and earnings; however, these differences decrease substantially when we control for selection. In light of the growing interest in using value-added measures in higher education for both funding and incentivizing purposes, our methodology offers unique evidence and lessons for policy makers. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).
C1 [Cunha, Jesse M.] Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
[Miller, Trey] RAND Corp, Santa Monica, CA 90401 USA.
RP Cunha, JM (reprint author), Naval Postgrad Sch, Grad Sch Business & Publ Policy, 555 Dyer Rd,Ingersoll Hall, Monterey, CA 93943 USA.
EM jcunha@nps.edu; tmiller@rand.org
NR 35
TC 5
Z9 5
U1 6
U2 22
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0272-7757
EI 1873-7382
J9 ECON EDUC REV
JI Econ. Educ. Rev.
PD OCT
PY 2014
VL 42
BP 64
EP 77
DI 10.1016/j.econedurev.2014.06.001
PG 14
WC Economics; Education & Educational Research
SC Business & Economics; Education & Educational Research
GA AS2UZ
UT WOS:000344136000006
ER
PT J
AU Liu, ZQ
Yang, TC
AF Liu, Zhiqiang
Yang, T. C.
TI On Overhead Reduction in Time-Reversed OFDM Underwater Acoustic
Communications
SO IEEE JOURNAL OF OCEANIC ENGINEERING
LA English
DT Article
DE Channel shortening; error propagation (EP); maximum ratio combining
(MRC); orthogonal frequency-division multiplexing (OFDM); passive phase
conjugation; time reversal; underwater acoustic communications (UWAC)
ID SPARSE CHANNEL ESTIMATION; SYNCHRONIZATION
AB In this paper, we present a system design for single-input-multiple-output (SIMO) orthogonal frequency-division multiplexing (OFDM) communications over underwater acoustic (UWA) channels. The design targets at improving bandwidth efficiency by reducing the amount of overheads (e. g., guard time intervals, training/pilot symbols) typically associated with SIMO-OFDM UWA communications. The design consists of three key components: 1) preamble-based parameter estimation that exploits full knowledge of the preamble; 2) time-reversal-based symbol detection that enables the use of short guard time intervals for interblock interference avoidance; and 3) decision-directed (DD) channel tracking with error propagation (EP) control that eliminates the need of periodic training for channel tracking. The proposed design is analyzed and tested at a seagoing experiment. The experimental results confirm the merits of our design and demonstrate considerable improvements over a competing alternative.
C1 [Liu, Zhiqiang; Yang, T. C.] Naval Res Lab, Washington, DC 20375 USA.
RP Liu, ZQ (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM zhiqiang@ieee.org; tsihyang@gmail.com
FU U.S. Office of Naval Research (ONR)
FX This work was supported by the U.S. Office of Naval Research (ONR). The
experiment was supported by the Taiwan National Science Council.
NR 22
TC 8
Z9 8
U1 1
U2 17
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0364-9059
EI 1558-1691
J9 IEEE J OCEANIC ENG
JI IEEE J. Ocean. Eng.
PD OCT
PY 2014
VL 39
IS 4
BP 788
EP 800
DI 10.1109/JOE.2013.2285658
PG 13
WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical &
Electronic; Oceanography
SC Engineering; Oceanography
GA AR9OI
UT WOS:000343904000018
ER
EF