FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Zimmerman, AT
Lynch, JP
Ferrese, FT
AF Zimmerman, Andrew T.
Lynch, Jerome P.
Ferrese, Frank T.
TI Market-Based Resource Allocation for Distributed Data Processing in
Wireless Sensor Networks
SO ACM TRANSACTIONS ON EMBEDDED COMPUTING SYSTEMS
LA English
DT Article
DE Algorithms; Performance; Experimentation; Wireless sensor networks;
optimization; pricing; distributed algorithms
ID ALGORITHMS; SYSTEMS
AB In recent years, improved wireless technologies have enabled the low-cost deployment of large numbers of sensors for a wide range of monitoring applications. Because of the computational resources (processing capability, storage capacity, etc.) collocated with each sensor in a wireless network, it is often possible to perform advanced data analysis tasks autonomously and in-network, eliminating the need for the post-pocessing of sensor data. With new parallel algorithms being developed for in-network computation, it has become necessary to create a framework in which all of a wireless network's scarce resources (CPU time, wireless bandwidth, storage capacity, battery power, etc.) can be best utilized in the midst of competing computational requirements. In this study, a market-based method is developed to autonomously distribute these scarce network resources across various computational tasks with competing objectives and/or resource demands. This method is experimentally validated on a network of wireless sensing prototypes, where it is shown to be capable of Pareto-optimally allocating scarce network resources. Then, it is applied to the real-world problem of rupture detection in shipboard chilled water systems.
C1 [Zimmerman, Andrew T.; Lynch, Jerome P.] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA.
[Ferrese, Frank T.] USN, Ctr Surface Warfare, Carderock Div, Philadelphia, PA 19112 USA.
RP Zimmerman, AT (reprint author), Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA.
EM atzimmer@umich.edu; jerlynch@umich.edu
FU U.S. Office of Naval Research [N00014-05-1-0596, N00014-09-C0103];
National Defense Science and Engineering Graduate Fellowship Program
FX This work is supported by the U.S. Office of Naval Research (Contracts
N00014-05-1-0596 and N00014-09-C0103 granted to J. P. Lynch). Additional
support has been provided to A. T. Zimmerman by the National Defense
Science and Engineering Graduate Fellowship Program.
NR 36
TC 1
Z9 1
U1 1
U2 2
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 1539-9087
EI 1558-3465
J9 ACM T EMBED COMPUT S
JI ACM Trans. Embed. Comput. Syst.
PD MAR
PY 2013
VL 12
IS 3
AR 84
DI 10.1145/2442116.2442134
PG 28
WC Computer Science, Hardware & Architecture; Computer Science, Software
Engineering
SC Computer Science
GA 175FS
UT WOS:000321216900018
ER
PT J
AU Carroll, TL
Rachford, FJ
AF Carroll, Thomas L.
Rachford, Frederic J.
TI Object identification based on filtering
SO IET RADAR SONAR AND NAVIGATION
LA English
DT Article
ID TARGET IDENTIFICATION; RADAR; NOISE
AB The authors use an acoustic experiment to test a method for identifying radar or sonar targets based on information from the target's impulse response function. The new algorithm uses a long modulated pulse of relatively low resolution. Using concepts from the field of dynamics, the algorithm measures the similarity between a signal reflected from a target and a previously recorded reference. The authors conducted acoustic experiments with some simple objects to validate the algorithm, although the actual target identification method could be used for radar or sonar.
C1 [Carroll, Thomas L.; Rachford, Frederic J.] USN, Res Lab, Washington, DC 20375 USA.
RP Carroll, TL (reprint author), USN, Res Lab, Code 6362, Washington, DC 20375 USA.
EM Thomas.Carroll@nrl.navy.mil
OI Carroll, Thomas/0000-0002-2371-2049
NR 17
TC 1
Z9 1
U1 0
U2 2
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8784
J9 IET RADAR SONAR NAV
JI IET Radar Sonar Navig.
PD MAR
PY 2013
VL 7
IS 3
BP 255
EP 260
DI 10.1049/iet-rsn.2012.0194
PG 6
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 181YQ
UT WOS:000321707300006
ER
PT J
AU Khemlani, S
Johnson-Laird, PN
AF Khemlani, Sangeet
Johnson-Laird, P. N.
TI Cognitive changes from explanations
SO JOURNAL OF COGNITIVE PSYCHOLOGY
LA English
DT Article
DE Explanations; Inconsistency; Mental models; Minimalism; Reasoning
ID BELIEF REVISION; INCONSISTENCIES
AB When individuals detect that a description is inconsistent, theorists from William James onwards have argued that a cognitive change occurs: They modify the description in a minimal way to make it consistent. We present an alternative hypothesis: Reasoners create an explanation that resolves the inconsistency, and the explanation entails a revision or reinterpretation of the description. According to this principle of resolution, revision is consequent upon explanation. Hence, when individuals have such an explanation in mind, they should be faster than otherwise to modify assertions to make them consistent. Two experiments corroborated this prediction.
C1 [Khemlani, Sangeet] Naval Res Lab, Washington, DC 20375 USA.
[Johnson-Laird, P. N.] Princeton Univ, Princeton, NJ 08544 USA.
RP Khemlani, S (reprint author), Naval Res Lab, Navy Ctr Appl Res Artificial Intelligence, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM skhemlani@gmail.com
NR 20
TC 7
Z9 7
U1 1
U2 4
PU PSYCHOLOGY PRESS
PI HOVE
PA 27 CHURCH RD, HOVE BN3 2FA, EAST SUSSEX, ENGLAND
SN 2044-5911
J9 J COGN PSYCHOL
JI J. Cogn. Psychol.
PD MAR 1
PY 2013
VL 25
IS 2
SI SI
BP 139
EP 146
DI 10.1080/20445911.2012.720968
PG 8
WC Psychology, Experimental
SC Psychology
GA 189XT
UT WOS:000322302300002
ER
PT J
AU Sivaprakasam, V
Huston, AL
Schultz, A
Eversole, JD
AF Sivaprakasam, Vasanthi
Huston, Alan L.
Schultz, Abraham
Eversole, Jay D.
TI A Novel Polarized Elastic Scatter Detection Method of Aerosol Particle
Velocimetry with Reduced Errors Due to Coincidence and Phantom Particles
SO AEROSOL SCIENCE AND TECHNOLOGY
LA English
DT Article
ID LASER-INDUCED FLUORESCENCE
AB This article describes a novel polarized elastic scattering method to measure flow velocities of aerosol particles. Velocities of individual aerosol particles of mixed size, and composition have been determined from time differences between scattered light pulses as they move between two parallel laser beams separated by a fixed distance, known as a time-of-flight method. By using two orthogonally polarized laser beams, the detected light pulses can be assigned to each beam by simultaneously determining their respective depolarization ratio. This implementation of time-of-flight velocimetry provides a mechanically robust distance between the two beams, which reduces error in the measurement and improves both its precision and accuracy, but more importantly, the use of the polarization features of the scattered light reduces errors due to particle coincidence and phantom particles caused by confusion of start and stop timing pulses. This approach was developed and demonstrated in an application to provide effective timing for subsequent selective actions on individual particles downstream such as: further diagnostic measurement, electrical charging and capture. These downstream actions require accurately predicted individual particle trajectories. Copyright 2013 American Association for Aerosol Research
C1 [Sivaprakasam, Vasanthi; Huston, Alan L.; Eversole, Jay D.] Naval Res Lab, Div Opt Sci, Washington, DC 20375 USA.
[Schultz, Abraham] Sotera Def Solut Inc, Washington, DC USA.
RP Sivaprakasam, V (reprint author), Naval Res Lab, Div Opt Sci, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM vasanthi.sivaprakasam@nrl.navy.mil
NR 19
TC 0
Z9 0
U1 1
U2 5
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
SN 0278-6826
J9 AEROSOL SCI TECH
JI Aerosol Sci. Technol.
PD MAR 1
PY 2013
VL 47
IS 3
BP 249
EP 257
DI 10.1080/02786826.2012.746777
PG 9
WC Engineering, Chemical; Engineering, Mechanical; Environmental Sciences;
Meteorology & Atmospheric Sciences
SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric
Sciences
GA 174RM
UT WOS:000321173100003
ER
PT J
AU Metcalf, AR
Loza, CL
Coggon, MM
Craven, JS
Jonsson, HH
Flagan, RC
Seinfeld, JH
AF Metcalf, Andrew R.
Loza, Christine L.
Coggon, Matthew M.
Craven, Jill S.
Jonsson, Haflidi H.
Flagan, Richard C.
Seinfeld, John H.
TI Secondary Organic Aerosol Coating Formation and Evaporation: Chamber
Studies Using Black Carbon Seed Aerosol and the Single-Particle Soot
Photometer
SO AEROSOL SCIENCE AND TECHNOLOGY
LA English
DT Review
ID LASER-INDUCED INCANDESCENCE; ABSORPTION CROSS-SECTION; AIR-POLLUTION
SOURCES; LIGHT-ABSORPTION; OPTICAL-PROPERTIES; MASS-SPECTROMETER;
SMOG-CHAMBER; MIXING STATE; HYGROSCOPIC PROPERTIES; SOUTHERN AFRICA
AB We report a protocol for using black carbon (BC) aerosol as the seed for secondary organic aerosol (SOA) formation in an environmental chamber. We employ a single-particle soot photometer (SP2) to probe single-particle SOA coating growth dynamics and find that SOA growth on nonspherical BC aerosol is diffusion-limited. Aerosol composition measurements with an Aerodyne high resolution time-of-flight aerosol mass spectrometer (AMS) confirm that the presence of BC seed does not alter the composition of SOA as compared to self-nucleated SOA or condensed SOA on ammonium sulfate seed. We employ a 3-wavelength photoacoustic soot spectrometer (PASS-3) to measure optical properties of the systems studied, including fullerene soot as the surrogate BC seed, nucleated naphthalene SOA from high-NOx photooxidation, and nucleated -pinene SOA from low-NOx photooxidation. A core-and-shell Mie scattering model of the light absorption enhancement is in good agreement with measured enhancements for both the low- and high-NOx -pinene photooxidation systems, reinforcing the assumption of a core-shell morphology for coated BC particles. A discrepancy between measured and modeled absorption enhancement factors in the naphthalene photooxidation system is attributed to the wavelength-dependence of refractive index of the naphthalene SOA. The coating of high-NOx -pinene SOA decreases after reaching a peak thickness during irradiation, reflecting a volatility change in the aerosol, as confirmed by the relative magnitudes of f(43) and f(44) in the AMS spectra. The protocol described here provides a framework by which future studies of SOA optical properties and single-particle growth dynamics may be explored in environmental chambers. Copyright 2013 American Association for Aerosol Research
C1 [Metcalf, Andrew R.; Flagan, Richard C.; Seinfeld, John H.] CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA.
[Metcalf, Andrew R.] Sandia Natl Labs, Combust Res Facil, Livermore, CA USA.
[Loza, Christine L.; Coggon, Matthew M.; Craven, Jill S.; Flagan, Richard C.; Seinfeld, John H.] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA.
[Jonsson, Haflidi H.] Naval Postgrad Sch, Ctr Interdisciplinary Remotely Piloted Aircraft S, Monterey, CA USA.
RP Seinfeld, JH (reprint author), CALTECH, Div Chem & Chem Engn, 1200 E Calif Blvd,Mail Code 210-41, Pasadena, CA 91125 USA.
EM seinfeld@caltech.edu
RI Metcalf, Andrew/C-5666-2012; Coggon, Matthew/I-8604-2016
OI Metcalf, Andrew/0000-0003-0385-1356; Coggon, Matthew/0000-0002-5763-1925
FU U.S. Department of Energy [DE-SC0006626]
FX This work was supported by the U.S. Department of Energy grant
DE-SC0006626.
NR 103
TC 8
Z9 8
U1 5
U2 92
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0278-6826
EI 1521-7388
J9 AEROSOL SCI TECH
JI Aerosol Sci. Technol.
PD MAR 1
PY 2013
VL 47
IS 3
BP 326
EP 347
DI 10.1080/02786826.2012.750712
PG 22
WC Engineering, Chemical; Engineering, Mechanical; Environmental Sciences;
Meteorology & Atmospheric Sciences
SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric
Sciences
GA 174RM
UT WOS:000321173100010
ER
PT J
AU Schnieders, J
Garbe, CS
Peirson, WL
Smith, GB
Zappa, CJ
AF Schnieders, J.
Garbe, C. S.
Peirson, W. L.
Smith, G. B.
Zappa, C. J.
TI Analyzing the footprints of near-surface aqueous turbulence: An image
processing-based approach
SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
LA English
DT Article
ID AIR-WATER-INTERFACE; LANGMUIR CIRCULATIONS; GAS TRANSFER; TEMPERATURE
FIELD; STREAK FORMATION; HEAT-FLUX; SEA HEAT; EXCHANGE; RENEWAL; OCEAN
AB In this contribution, a detailed investigation of surface thermal patterns on the water surface is presented, with wind speeds ranging from 1 to 7 m s(-1) and various surface conditions. Distinct structures can be observed on the surface-small-scale short-lived structures termed fish scales and larger-scale cold streaks that are consistent with the footprints of Langmuir circulations. The structure of the surface heat pattern depends strongly on wind-induced stress. Consistent behavior regarding the spacing of cold streaks can be observed in a range of laboratory facilities when expressed as a function of water-sided friction velocity, u*. This behavior systematically decreased until a point of saturation at u* = 0.7 cm/s. We present a new image processing-based approach to the analysis of the spacing of cold streaks based on a machine learning approach to classify the thermal footprints of near-surface turbulence. Comparison is made with studies of Langmuir circulation and the following key points are found. Results suggest a saturation in the tangential stress, anticipating that similar behavior will be observed in the open ocean. A relation to Langmuir numbers shows that thermal footprints in infrared images are consistent with Langmuir circulations and depend strongly on wind wave conditions.
C1 [Schnieders, J.; Garbe, C. S.] Heidelberg Univ, Interdisciplinary Ctr Sci Comp IWR, D-69115 Heidelberg, Germany.
[Peirson, W. L.] Univ New S Wales, Water Res Lab, Sydney, NSW, Australia.
[Smith, G. B.] USN, Res Lab, Washington, DC 20375 USA.
[Zappa, C. J.] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA.
RP Garbe, CS (reprint author), Heidelberg Univ, Interdisciplinary Ctr Sci Comp IWR, Speyerer Str 6, D-69115 Heidelberg, Germany.
EM Christoph.Garbe@iwr.uni-heidelberg.de
OI Peirson, William/0000-0001-8775-5200
FU HGS Mathcomp Graduate School; DAAD (German Academic Exchange Service)
FX We are grateful to Roland Rocholz and Maximilian Bopp for providing mean
square slope and friction velocity measurements. We would like to thank
two anonymous reviewers for helpful comments. This work was supported by
the HGS Mathcomp Graduate School and the DAAD (German Academic Exchange
Service).
NR 44
TC 6
Z9 6
U1 1
U2 9
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9275
J9 J GEOPHYS RES-OCEANS
JI J. Geophys. Res.-Oceans
PD MAR
PY 2013
VL 118
IS 3
BP 1272
EP 1286
DI 10.1002/jgrc.20102
PG 15
WC Oceanography
SC Oceanography
GA 163GE
UT WOS:000320323200016
ER
PT J
AU Penko, AM
Calantoni, J
Rodriguez-Abudo, S
Foster, DL
Slinn, DN
AF Penko, A. M.
Calantoni, J.
Rodriguez-Abudo, S.
Foster, D. L.
Slinn, D. N.
TI Three-dimensional mixture simulations of flow over dynamic rippled beds
SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
LA English
DT Article
ID OSCILLATORY FLOW; SAND RIPPLES; SEDIMENT TRANSPORT; FIELD OBSERVATIONS;
VORTEX RIPPLES; NORTH-CAROLINA; GEOMETRY; ENTRAINMENT; DIMENSIONS;
MIGRATION
AB A three-dimensional mixture theory model for flow and sediment transport in the seafloor boundary layer, SedMix3D, simulated the flow over and the resulting sediment entrainment and evolution of rippled beds. SedMix3D treats the fluid-sediment mixture as a continuum of varying density and viscosity with the concentration of sediment and velocity of the mixture simulated by the Navier-Stokes equations coupled with a sediment flux equation for the mixture. Model validation was performed by comparing simulated time-dependent flow quantities and bulk flow statistics with measurements obtained in the laboratory under scaled forcing conditions. Two-dimensional planes extracted from a three-dimensional simulation were compared to observations made using planar Particle Image Velocimetry (PIV) in a laboratory flume. The simulated results of time-averaged velocities and time-dependent quantities of vorticity and swirling strength were in good agreement with the observations. The model was used to analyze the three-dimensionality of vortex formation and ejection produced by oscillatory flow over vortex ripples, a process that cannot be observed in the laboratory with planar PIV measurements. The three-dimensional simulated results showed that the swirling strength varied significantly in the cross-flow direction, indicating that the vortices formed and dissipated non-uniformly due to random fluctuations. Subsequently, an order of magnitude difference in offshore sediment flux was observed using two different methods to calculate sediment fluxes (spatially averaging and at a point). The results suggest that while a two-dimensional plane may be sufficient to examine the general hydrodynamics over ripples, three-dimensional analysis is necessary for a complete understanding of sediment transport.
C1 [Penko, A. M.; Calantoni, J.] USN, Marine Geosci Div, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Rodriguez-Abudo, S.; Foster, D. L.] Univ New Hampshire, Ctr Ocean Engn, Durham, NH 03824 USA.
[Foster, D. L.] Univ New Hampshire, Dept Mech Engn, Durham, NH 03824 USA.
[Slinn, D. N.] Univ Florida, Dept Civil & Coastal Engn, Gainesville, FL USA.
RP Penko, AM (reprint author), USN, Marine Geosci Div, Res Lab, Code 7434,1005 Balch Blvd, Stennis Space Ctr, MS 39529 USA.
EM Code7434@nrlssc.navy.mil
FU Naval Research Laboratory; Office of Naval Research; National Science
Foundation [CTS-0348203]
FX A. M. P. was supported by the Jerome and Isabella Karle Distinguished
Scholar Fellowship Program at the Naval Research Laboratory. J. C. was
supported under base funding to the Naval Research Laboratory from the
Office of Naval Research. S. R. A. and D. L. F. were supported by the
National Science Foundation (CTS-0348203). This work was supported in
part by a grant of computer time from the DoD High Performance Computing
Modernization Program at the NAVY, AFRL, and the ERDC DSRC.
NR 49
TC 9
Z9 9
U1 4
U2 16
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9275
J9 J GEOPHYS RES-OCEANS
JI J. Geophys. Res.-Oceans
PD MAR
PY 2013
VL 118
IS 3
BP 1543
EP 1555
DI 10.1002/jgrc.20120
PG 13
WC Oceanography
SC Oceanography
GA 163GE
UT WOS:000320323200035
ER
PT J
AU Giordano, S
Ciaravella, A
Raymond, JC
Ko, YK
Suleiman, R
AF Giordano, S.
Ciaravella, A.
Raymond, J. C.
Ko, Y-K
Suleiman, R.
TI UVCS/SOHO catalog of coronal mass ejections from 1996 to 2005:
Spectroscopic proprieties
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID CME CURRENT SHEETS; SHOCK-WAVE DRIVEN; ULTRAVIOLET SPECTROSCOPY;
3-DIMENSIONAL STRUCTURE; RADIO OBSERVATIONS; SOHO OBSERVATIONS; SOLAR
CORONA; UV; RECONNECTION; TEMPERATURE
AB Ultraviolet spectra of the extended solar corona have been routinely obtained by SOHO/UltraViolet Coronagraph Spectrometer (UVCS) since 1996. Sudden variations of spectral parameters are mainly due to the detection of coronal mass ejections (CMEs) crossing the instrumental slit. We present a catalog of CME ultraviolet spectra based upon a systematic search of events in the Large Angle and Spectrometric Coronagraph (LASCO) CME catalog, and we discuss their statistical properties. Our catalog includes 1059 events through the end of 2005, covering nearly a full solar cycle. It is available online at the URL http://solarweb.oato.inaf.it/UVCS_CME and embedded in the online LASCO CME catalog (http://cdaw.gsfc.nasa.gov/CME_list). The emission lines observed provide diagnostics of CME plasma parameters, such as the light-of-sight velocity, density, and temperature and allow to link the CME onset data to the extended corona white-light images. The catalog indicates whether there are clear signatures of features such as shock waves, current sheets, O VI flares, helical motions, and which part of the CME structures (front, cavity, or prominence material) are detected. The most common detected structure is the cool prominence material (in about 70% of the events). For each event, the catalog also contains movies, images, plots, and information relevant to address detailed scientific investigations. The number of events detected in UV is about one tenth of the LASCO CMEs and about one fourth of the halo events. We find that UVCS tends to detect faster, more massive, and energetic CME than LASCO, and for about 40% of the events, it has been possible to determine the plasma light-of-sight velocity.
C1 [Giordano, S.] Osserv Astron Torino, INAF, I-10025 Pino Torinese, Italy.
[Ciaravella, A.] Osserv Astron Palermo, INAF, Palermo, Italy.
[Raymond, J. C.; Suleiman, R.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Ko, Y-K] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Giordano, S (reprint author), Osserv Astron Torino, INAF, I-10025 Pino Torinese, Italy.
EM giordano@oato.inaf.it
OI Ciaravella, Angela/0000-0002-3127-8078; Giordano,
Silvio/0000-0002-3468-8566
FU National Aeronautics and Space Administration (NASA) [NNG06GG78G,
NNX09AB17G, NNX11AB61G]
FX This work was supported by National Aeronautics and Space Administration
(NASA) grants NNG06GG78G, NNX09AB17G, and NNX11AB61G to the Smithsonian
Astrophysical Observatory. The LASCO CME catalog is generated and
maintained at the CDAW Data Center by NASA and the Catholic University
of America in cooperation with the Naval Research Laboratory. SOHO is a
project of international cooperation between the European Space Agency
(ESA) and the NASA. UVCS is a joint project of NASA, Italian Space
Agency (ASI), and the Swiss Funding Agencies. We thank Antonio
Volpicelli for help to release the online catalog.
NR 63
TC 7
Z9 7
U1 0
U2 5
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD MAR
PY 2013
VL 118
IS 3
BP 967
EP 981
DI 10.1002/jgra.50166
PG 15
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 135FP
UT WOS:000318274000002
ER
PT J
AU Mahmoudian, A
Scales, WA
Bernhardt, PA
Samimi, A
Kendall, E
Ruohoniemi, JM
Isham, B
Vega-Cancel, O
Bordikar, M
AF Mahmoudian, A.
Scales, W. A.
Bernhardt, P. A.
Samimi, A.
Kendall, E.
Ruohoniemi, J. M.
Isham, B.
Vega-Cancel, O.
Bordikar, M.
TI Ion gyro-harmonic structuring in the stimulated radiation spectrum and
optical emissions during electron gyro-harmonic heating
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID POWER RADIO-WAVES; ELECTROMAGNETIC EMISSION; ENHANCED AIRGLOW;
DOWNSHIFTED PEAK; FREQUENCY; IONOSPHERE; PLASMA; INSTABILITY;
SIMULATION; GENERATION
AB Stimulated electromagnetic emissions (SEEs) are secondary radiation produced during active space experiments in which the ionosphere is actively heated with high power high frequency (HF) ground-based radio transmitters. Recently, there has been significant interest in ion gyro-harmonic structuring the SEE spectrum due to the potential for new diagnostic information available such as electron acceleration and creation of artificial ionization layers. These relatively recently discovered gyro-harmonic spectral features have almost exclusively been studied when the transmitting frequency is near the second electron gyro-harmonic frequency. The first extensive systematic experimental investigations of the possibility of these spectral features for third electron gyro-harmonic heating are provided here. Discrete spectral features shifted from the transmit frequency ordered by harmonics of the ion gyro-frequency were observed for third electron gyro-harmonic heating for the first time at a recent campaign at the High Frequency Active Auroral Research Program (HAARP) facility. These features were also closely correlated with a broader band feature at a larger frequency shift from the transmit frequency known as the downshifted peak (DP). The power threshold of these spectral features was measured, as well as their behavior with heater beam angle, and proximity of the transmit frequency to the third electron gyro-harmonic frequency. Comparisons were also made with similar spectral features observed during second electron gyro-harmonic heating during the same campaign. A theoretical model is provided that interprets these spectral features as resulting from parametric decay instabilities in which the pump field ultimately decays into high frequency upper hybrid/electron Bernstein and low frequency neutralized ion Bernstein IB and/or obliquely propagating ion acoustic waves at the upper hybrid interaction altitude. Coordinated optical and SEE observations were carried out in order to provide a better understanding of electron acceleration and precipitation processes. Optical emissions were observed associated with SEE gyro-harmonic features for pump heating near the second electron gyro-harmonic during the campaign. The observations affirm strong correlation between the gyro-structures and the pump-induced optical emissions.
C1 [Mahmoudian, A.; Scales, W. A.; Samimi, A.; Ruohoniemi, J. M.; Bordikar, M.] Virginia Tech, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24060 USA.
[Bernhardt, P. A.] USN, Div Plasma Phys, Res Lab, Washington, DC USA.
[Kendall, E.] SRI Int, Menlo Pk, CA 94025 USA.
[Isham, B.; Vega-Cancel, O.] Inter Amer Univ Puerto Rico, Dept Nat Sci & Math, Bayamon, PR USA.
RP Mahmoudian, A (reprint author), Virginia Tech, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24060 USA.
EM alirezam@vt.edu
FU National Science Foundation; Army Research Office [W911NF-11-0217,
W911NF-10-1-0002]
FX Some of this work was supported by the National Science Foundation. B.
I. and O.V.-C. were supported by Army Research Office grants
W911NF-11-0217 and W911NF-10-1-0002. The observations reported here were
supported by the HAARP program through the Polar Aeronomy and Radio
Science (PARS) Summer School. HAARP is a DoD program operated jointly by
the U.S. Air Force and U.S. Navy. The authors wish to thank HAARP
personnel for their assistance in designing this experiment and Bill
Bristow for providing SuperDARN measurements.
NR 43
TC 13
Z9 14
U1 0
U2 9
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD MAR
PY 2013
VL 118
IS 3
BP 1270
EP 1287
DI 10.1002/jgra.50167
PG 18
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 135FP
UT WOS:000318274000029
ER
PT J
AU Wang, C
AF Wang, Chong
TI Conscious Capitalism Firms: DO THEY BEHAVE AS THEIR PROPONENTS SAY?
SO CALIFORNIA MANAGEMENT REVIEW
LA English
DT Article
DE Conscious Capitalism; Corporate Social Responsibility; Stakeholder
Orientation
ID EARNINGS MANAGEMENT; JAMES-OTOOLE; HALF CHEERS; PERFORMANCE; ACCRUALS
AB Proponents of the Conscious Capitalism (CC) movement claim that CC firms should demonstrate a lower gross margin, a higher profit margin, a lower SG&A, and a lower marketing expense than their non-CC comparable firms. Using a sample of industry-year-size matched control firms as the CC firms' benchmark, this article shows that empirical evidence largely disagrees with these conjectures. It further shows that in contrast to the implications of the CC movement, CC firms neither demonstrated superior stock performance relative to the S&P 500 in recent years, nor do they respond less to the pressures from the equity market.
C1 USN, Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
RP Wang, C (reprint author), USN, Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
RI alrefaei, hessa/F-1443-2015
NR 18
TC 0
Z9 0
U1 5
U2 19
PU UNIV CALIF
PI BERKELEY
PA GRAD SCH BUSINESS ADMIN, BERKELEY, CA 94720 USA
SN 0008-1256
J9 CALIF MANAGE REV
JI Calif. Manage. Rev.
PD SPR
PY 2013
VL 55
IS 3
BP 60
EP 86
DI 10.1525/cmr.2013.55.3.60
PG 27
WC Business; Management
SC Business & Economics
GA 136TM
UT WOS:000318386300003
ER
PT J
AU Wang, C
AF Wang, Chong
TI On the Scientific Status of the Conscious Capitalism Theory
SO CALIFORNIA MANAGEMENT REVIEW
LA English
DT Editorial Material
DE Conscious Capitalism; Refutability; Consistency; Generality
ID HALF CHEERS
AB This note is a response to Rajendra Sisodia's commentary on my article on the topic of Conscious Capitalism (in this issue of California Management Review). First, it raises new concerns based on Sisodia's commentary and challenges the scientific status of the Conscious Capitalism theory. It focuses on refutability, consistency, and generality, as these three characteristics are essential features of any scientific theory. Second, it responds to Sisodia's various comments.
C1 USN, Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
RP Wang, C (reprint author), USN, Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
NR 5
TC 0
Z9 0
U1 0
U2 6
PU UNIV CALIF
PI BERKELEY
PA GRAD SCH BUSINESS ADMIN, BERKELEY, CA 94720 USA
SN 0008-1256
J9 CALIF MANAGE REV
JI Calif. Manage. Rev.
PD SPR
PY 2013
VL 55
IS 3
BP 97
EP 106
DI 10.1525/cmr.2013.55.3.97
PG 10
WC Business; Management
SC Business & Economics
GA 136TM
UT WOS:000318386300005
ER
PT J
AU Powley, EH
AF Powley, Edward H.
TI The Process and Mechanisms of Organizational Healing
SO JOURNAL OF APPLIED BEHAVIORAL SCIENCE
LA English
DT Article
DE organizational healing; leadership; positive organizational scholarship;
organizational resilience; empathy; relationships at work;
organizational culture
ID POSTTRAUMATIC GROWTH; CRITICAL PERIOD; HUMAN CAPACITY; RESILIENCE;
TRAUMA; COMPASSION; CONSTRUCT; LEADERS; EVENTS; STRESS
AB Organizational healing refers to the work of repairing practices, routines, and structures in the face of disruption and strengthening organizational functioning through social relationships. Healing, more than resilience, coping, or recovery, enables greater organizational strength than what previously existed. Its unique characteristics make it an important construct for further explaining what accounts for developing exceptional organizational systems. Based on the financial and economic challenges facing Prudential Real Estate after the housing market crash in 2008, and parallels from physiological healing processes, I provide an in-depth description of the process of organizational healing that is supported by four mechanisms: empathy, interventions, collective effort, and leadership. Together the process and mechanisms explain how organizational healing enables both resilience and strengthening. These mechanisms point to activities practitioners and leaders may consider when promoting virtuous human systems.
C1 [Powley, Edward H.] USN, Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
RP Powley, EH (reprint author), USN, Postgrad Sch, 555 Dyer Rd,Bldg 330,IN 209, Monterey, CA 93943 USA.
EM ehpowley@nps.edu
NR 103
TC 2
Z9 2
U1 7
U2 28
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0021-8863
J9 J APPL BEHAV SCI
JI J. Appl. Bahav. Sci.
PD MAR
PY 2013
VL 49
IS 1
SI SI
BP 42
EP 68
DI 10.1177/0021886312471192
PG 27
WC Behavioral Sciences; Psychology, Applied; Management; Psychology,
Experimental
SC Behavioral Sciences; Psychology; Business & Economics
GA 140IY
UT WOS:000318649000003
ER
PT J
AU Espinoza, CM
Guillemot, L
Celik, O
Weltevrede, P
Stappers, BW
Smith, DA
Kerr, M
Zavlin, VE
Cognard, I
Eatough, RP
Freire, PCC
Janssen, GH
Camilo, F
Desvignes, G
Hewitt, JW
Hou, X
Johnston, S
Keith, M
Kramer, M
Lyne, A
Manchester, RN
Ransom, SM
Ray, PS
Shannon, R
Theureau, G
Webb, N
AF Espinoza, C. M.
Guillemot, L.
Celik, Oe
Weltevrede, P.
Stappers, B. W.
Smith, D. A.
Kerr, M.
Zavlin, V. E.
Cognard, I.
Eatough, R. P.
Freire, P. C. C.
Janssen, G. H.
Camilo, F.
Desvignes, G.
Hewitt, J. W.
Hou, X.
Johnston, S.
Keith, M.
Kramer, M.
Lyne, A.
Manchester, R. N.
Ransom, S. M.
Ray, P. S.
Shannon, R.
Theureau, G.
Webb, N.
TI Six millisecond pulsars detected by the Fermi Large Area Telescope and
the radio/gamma-ray connection of millisecond pulsars
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE pulsars: general; gamma-rays: general; X-rays: general
ID NEUTRON-STAR ATMOSPHERES; NANCAY RADIO TELESCOPE; PULSED GAMMA-RAYS; PSR
J2051-0827; LIGHT CURVES; GIANT PULSES; POLARIZATION OBSERVATIONS;
TIMING OBSERVATIONS; MAGNETIC-FIELDS; BINARY-SYSTEM
AB We report on the discovery of gamma-ray pulsations from five millisecond pulsars (MSPs) using the Fermi Large Area Telescope (LAT) and timing ephemerides provided by various radio observatories. We also present confirmation of the gamma-ray pulsations from a sixth source, PSR J2051-0827. Five of these six MSPs are in binary systems: PSRs J1713+0747, J1741+1351, J1600-3053 and the two black widow binary pulsars PSRs J0610-2100 and J2051-0827. The only isolated MSP is the nearby PSR J1024-0719, which is also known to emit X-rays. We present X-ray observations in the direction of PSRs J1600-3053 and J2051-0827. While PSR J2051-0827 is firmly detected, we can only give upper limits for the X-ray flux of PSR J1600-3053. There are no dedicated X-ray observations available for the other three objects.
The MSPs mentioned above, together with most of the MSPs detected by Fermi, are used to put together a sample of 30 gamma-ray MSPs. This sample is used to study the morphology and phase connection of radio and gamma-ray pulse profiles. We show that MSPs with pulsed gamma-ray emission which is phase-aligned with the radio emission present the steepest radio spectra and the largest magnetic fields at the light cylinder among all MSPs. Also, we observe a trend towards very low, or undetectable, radio linear polarization levels. These properties could be attributed to caustic radio emission produced at a range of different altitudes in the magnetosphere. We note that most of these characteristics are also observed in the Crab pulsar, the only other radio pulsar known to exhibit phase-aligned radio and gamma-ray emission.
C1 [Espinoza, C. M.; Weltevrede, P.; Stappers, B. W.; Janssen, G. H.; Kramer, M.; Lyne, A.] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England.
[Guillemot, L.; Eatough, R. P.; Freire, P. C. C.; Desvignes, G.; Kramer, M.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Celik, Oe; Hewitt, J. W.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Celik, Oe] CRESST, Greenbelt, MD 20771 USA.
[Celik, Oe] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA.
[Celik, Oe] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA.
[Smith, D. A.; Hou, X.] Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France.
[Kerr, M.] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA.
[Kerr, M.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Zavlin, V. E.] NASA, Space Sci Lab, Marshall Space Flight Ctr, Huntsville, AL 35805 USA.
[Zavlin, V. E.] USRA Sci & Technol Inst, Huntsville, AL 35805 USA.
[Cognard, I.; Desvignes, G.; Theureau, G.] CNRS, UMR 6115, LPCE, F-45071 Orleans 02, France.
[Cognard, I.; Desvignes, G.; Theureau, G.] CNRS, INSU, Observ Paris, Stn Radioastron Nancay, F-18330 Nancay, France.
[Camilo, F.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Camilo, F.] Arecibo Observ, Arecibo, PR 00612 USA.
[Johnston, S.; Keith, M.; Manchester, R. N.; Shannon, R.] Australia Telescope Natl Facil, CSIRO Astron & Space Sci, Epping, NSW 1710, Australia.
[Ransom, S. M.] NRAO, Charlottesville, VA 22903 USA.
[Ray, P. S.] USN, Space Sci Div, Res Lab, Washington, DC 20375 USA.
[Webb, N.] CNRS, IRAP, F-31028 Toulouse 4, France.
[Webb, N.] Univ Toulouse, UPS, OMP, GAHEC,IRAP, Toulouse, France.
RP Espinoza, CM (reprint author), Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England.
EM cme@jb.man.ac.uk
OI Shannon, Ryan/0000-0002-7285-6348; Ransom, Scott/0000-0001-5799-9714;
Ray, Paul/0000-0002-5297-5278
FU Science and Technology Facilities Council of the United Kingdom;
Commonwealth Government; National Science Foundation [AST-1100968]
FX The Nancay Radio Observatory is operated by the Paris Observatory,
associated with the French Centre National de la Recherche Scientifique
(CNRS). 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 United
Kingdom. The Westerbork Synthesis Radio Telescope is operated by the
Netherlands Foundation for Radio Astronomy, ASTRON. 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 Arecibo Observatory is operated by SRI
International under a cooperative agreement with the National Science
Foundation (AST-1100968), and in alliance with Ana G. Mendez-Universidad
Metropolitana and the Universities Space Research Association.
NR 100
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Z9 29
U1 0
U2 0
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0035-8711
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD MAR
PY 2013
VL 430
IS 1
BP 571
EP 587
DI 10.1093/mnras/sts657
PG 17
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 135FU
UT WOS:000318274500051
ER
PT J
AU Capra, GG
Ge, XX
Balough, BJ
Shah, AN
Turner, S
Mullin, DP
Pfannenstiel, TJ
AF Capra, Gregory G.
Ge, Xianxi
Balough, Ben J.
Shah, Anil N.
Turner, Sam
Mullin, David P.
Pfannenstiel, Travis J.
TI Management of the Incus Body in Ossiculoplasty
SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY
LA English
DT Article
DE ossiculoplasty; incus; laser Doppler vibrometry; round window membrane;
mass; incus body; incus strut prosthesis; middle ear; sound
transmission; ossicular chain reconstruction
ID MIDDLE-EAR FUNCTION; OSSICULAR CHAIN; STAPES; MASS; MALLEUS;
TRANSMISSION; PROSTHESES; MECHANICS; OSSICLES; SOUND
AB Objective. (1) Evaluate the sound transfer impact of removal of the incus body in ossicular chain reconstruction (OCR) using an incus strut prosthesis. (2) Provide basic science data to assist clinical decision making in ossiculoplasty.
Study Design. Basic science.
Setting. Cadaveric temporal bone research laboratory.
Subjects and Methods. Ossicular chain reconstruction with an incus strut prosthesis was performed on 7 human temporal bones with and without the incus body. The difference in round window membrane (RWM) peak-to-peak displacements (90-dB sound pressure level, 250-8000 Hz) using single-point laser Doppler vibrometry (LDV) was compared with observed baseline, intact ossicular chain values.
Results. Comparing OCR using an incus strut prosthesis to an intact ossicular chain across all 7 temporal bones, the largest differences in RWM velocity occurred at 1011 and 2011 Hz. With increasing frequencies, RWM velocities of the OCR approached the intact ossicular chain. Using a Wilcoxon rank-sum test comparing the ossicular chain with and without the incus body showed no statistically significant difference across all frequencies (P = .925). Removing the incus body resulted in improved median RWM velocity (x10(-2) mm/s) by 0.6 at 1011 Hz and a decrease of 0.6 at 2011 Hz. A rank-sum test to evaluate the difference at 1011 and 2011 Hz did not demonstrate statistical significance.
Conclusion. Removal of the incus body in OCR using an incus strut prosthesis did not significantly change sound transfer function of the middle ear relative to its preservation. Our data suggest the impact of the retained mass in OCR to be minimal.
C1 [Capra, Gregory G.; Ge, Xianxi; Shah, Anil N.; Mullin, David P.] USN, Dept Otolaryngol, Med Ctr San Diego, San Diego, CA USA.
[Balough, Ben J.] Kaiser Permanente South Sacramento, Sacramento, CA USA.
[Turner, Sam] USN, Hosp Camp Lejeune, Camp Lejeune, NC USA.
[Pfannenstiel, Travis J.] San Antonio Mil Med Ctr, Dept Otolaryngol, Ft Sam Houston, TX USA.
RP Capra, GG (reprint author), USN, Dept Otolaryngol Head & Neck Surg, Med Ctr San Diego, 34800 Bob Wilson Dr, San Diego, CA USA.
EM gregory.capra@med.navy.mil
NR 18
TC 1
Z9 1
U1 0
U2 3
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0194-5998
J9 OTOLARYNG HEAD NECK
JI Otolaryngol. Head Neck Surg.
PD MAR
PY 2013
VL 148
IS 3
BP 482
EP 487
DI 10.1177/0194599812472641
PG 6
WC Otorhinolaryngology; Surgery
SC Otorhinolaryngology; Surgery
GA 136LD
UT WOS:000318362500021
PM 23302148
ER
PT J
AU Rose, DV
Miller, CL
Portillo, S
Welch, DR
AF Rose, D. V.
Miller, C. L.
Portillo, S.
Welch, D. R.
TI Electrode-plasma-driven radiation cutoff in long-pulse, high-power
microwave devices
SO PHYSICS OF PLASMAS
LA English
DT Article
ID TRANSMISSION-LINE OSCILLATOR; BACKWARD-WAVE OSCILLATOR;
PARTICLE-IN-CELL; MILO; SIMULATION; TRANSPORT; ION; GENERATION;
OPERATION; EMISSION
AB The impact of electrode plasma dynamics on the radiation production in a high power microwave device is examined using particle-in-cell simulations. Using the design of a compact 2.4 GHz magnetically insulated line oscillator (MILO) as the basis for numerical simulations, we characterize the time-dependent device power and radiation output over a range of cathode plasma formation rates. These numerical simulations can self-consistently produce radiation characteristics that are similar to measured signals in long pulse duration MILOs. This modeling capability should result in improved assessment of existing high-power microwave devices and lead to new designs for increased radiation pulse durations. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794955]
C1 [Rose, D. V.; Miller, C. L.; Welch, D. R.] Voss Sci LLC, Albuquerque, NM 87108 USA.
[Portillo, S.] USN, Ctr Surface Warfare, Dahlgren, VA 22448 USA.
RP Rose, DV (reprint author), Voss Sci LLC, Albuquerque, NM 87108 USA.
EM David.Rose@vosssci.com
FU U.S. Department of Defense through NSWC, Dahlgren, VA
FX Funding for this work was provided by U.S. Department of Defense through
NSWC, Dahlgren, VA. The numerical simulations presented here were
carried out on parallel computer systems at Voss Scientific, with
assistance from R. Clark and C. Mostrom. We thank Dr. W. Stygar for
insightful discussions regarding the role of electrode plasmas in
high-power magnetically insulated systems and Dr. J. Luginsland and
Professor E. Schamiloglu for discussions on HPM device characteristics
and modeling.
NR 29
TC 1
Z9 1
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
J9 PHYS PLASMAS
JI Phys. Plasmas
PD MAR
PY 2013
VL 20
IS 3
AR 034501
DI 10.1063/1.4794955
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA 122DA
UT WOS:000317295200082
ER
PT J
AU Chirita, A
Kukhtarev, N
Kukhtareva, T
Gallegos, S
AF Chirita, Arcadi
Kukhtarev, Nikolai
Kukhtareva, Tatiana
Gallegos, Sonia
TI Remote sensing and characterization of oil on water using coherent
fringe projection and holographic in-line interferometry
SO OPTICAL ENGINEERING
LA English
DT Article
DE in-line holographic interferometry; coherent fringe projection; laser
cleaning; crude oil spill; photoluminescence
ID SPILL
AB We suggest combining several optical methods for remote sensing and characterization of crude oil films and emulsions. These are coherent fringe projection illumination (CFP), holographic in-line interferometry (HILI), and laser-induced fluorescence. The combined methods of CFP and HILI are described in the frame of coherent superposition of partial interference patterns. It is shown that in addition to detection and identification of oil, laser illumination in the green-blue region can also degrade oil. This finding indicates that properly structured laser cleanup can be an alternative method of decontamination. (C) 2013 Society of Photo-Optical Instrumentation Engineers (SPIE) [DOI: 10.1117/1.OE.52.3.035601]
C1 [Chirita, Arcadi] State Univ Moldova, Dept Phys, MD-2009 Kishinev, Moldova.
[Kukhtarev, Nikolai; Kukhtareva, Tatiana] Alabama A&M Univ, Dept Phys, Normal, AL 35762 USA.
[Gallegos, Sonia] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Chirita, A (reprint author), State Univ Moldova, Dept Phys, 60 A Mateevici St, MD-2009 Kishinev, Moldova.
EM arc_chirita@yahoo.com
NR 9
TC 0
Z9 0
U1 2
U2 10
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
J9 OPT ENG
JI Opt. Eng.
PD MAR
PY 2013
VL 52
IS 3
AR 035601
DI 10.1117/1.OE.52.3.035601
PG 5
WC Optics
SC Optics
GA 134XB
UT WOS:000318248000029
ER
PT J
AU Stoneback, M
Ishimaru, A
Reinhardt, C
Kuga, Y
AF Stoneback, Matthew
Ishimaru, Akira
Reinhardt, Colin
Kuga, Yasuo
TI Temperature rise in objects due to optical focused beam through
atmospheric turbulence near ground and ocean surface
SO OPTICAL ENGINEERING
LA English
DT Article
DE turbulence; laser-induced damage; atmospheric optics; infrared lasers;
absorption
ID REFRACTIVE-INDEX; SOLIDS; METALS
AB We consider an optical beam propagated through the atmosphere and incident on an object causing a temperature rise. In clear air, the physical characteristics of the optical beam transmitted to the object surface are influenced primarily by the effect of atmospheric turbulence, which can be significant near the ground or ocean surface. We use a statistical model to quantify the expected power transfer through turbulent atmosphere and provide guidance toward the threshold of thermal blooming for the considered scenarios. The bulk thermal characteristics of the materials considered are used in a thermal diffusion model to determine the net temperature rise at the object surface due to the incident optical beam. These results of the study are presented in graphical form and are of particular interest to operators of high power laser systems operating over large distances through the atmosphere. Numerical examples include a CO2 laser (lambda = 10.6 mu m) with: aperture size of 5 cm, varied pulse duration, and propagation distance of 0.5 km incident on 0.1-mm copper, 10-mm polyimide, 1-mm water, and 10-mm glass/resin composite targets. To assess the effect of near ground/ocean laser propagation, we compare turbulent (of varying degrees) and nonturbulent atmosphere. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. [DOI: 10.1117/1.OE.52.3.036001]
C1 [Stoneback, Matthew; Ishimaru, Akira; Kuga, Yasuo] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA.
[Reinhardt, Colin] USN, Atmospher Propagat Branch, SSC PAC, San Diego, CA 92152 USA.
RP Stoneback, M (reprint author), Univ Washington, Dept Elect Engn, Campus Box 352500, Seattle, WA 98195 USA.
EM matt0825@uw.edu
FU Office of Naval Research [N000141110358]; National Science Foundation
[ECCS0925034]
FX This work was supported by the Office of Naval Research (N000141110358)
and the National Science Foundation (ECCS0925034).
NR 27
TC 1
Z9 1
U1 1
U2 9
PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 0091-3286
J9 OPT ENG
JI Opt. Eng.
PD MAR
PY 2013
VL 52
IS 3
AR 036001
DI 10.1117/1.OE.52.3.036001
PG 8
WC Optics
SC Optics
GA 134XB
UT WOS:000318248000033
ER
PT J
AU Han, X
Bui, H
Mandal, S
Pattipati, KR
Kleinman, DL
AF Han, Xu
Bui, Huy
Mandal, Suvasri
Pattipati, Krishna R.
Kleinman, David L.
TI Optimization-Based Decision Support Software for a Team-In-The-Loop
Experiment: Asset Package Selection and Planning
SO IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
LA English
DT Article
DE m best asset packages; mission planning; operational planning; resource
allocation
ID SCHEDULING PROBLEMS; MIXED-INTEGER; ART SURVEY; ALGORITHMS; ASSIGNMENT
AB This paper presents two domain-independent optimization-based planning algorithms for efficiently allocating assets that are needed to execute a set of interdependent tasks. The first algorithm is an asset package selection module that combines mixed integer programming and an extended Murty's decision space partitioning algorithm that can be used to provide human planners with a set of alternative asset packages that meet individual task requirements, while maximizing task execution accuracy. This asset package selection module was embedded in a decision aid that supported a mixed-initiative team-in-the-loop planning experiment (MOC-1) conducted at the Naval Postgraduate School in March 2009. The experiment examined the effectiveness and efficiency of two different Maritime Operations Center (MOC) organizational structures for conducting a mission planning activity that required the use of scarce resources. The second algorithm is a planning module that integrates weighted length algorithm, asset package selection module, rollout strategy, and a pairwise exchange method to assist experiment designers to set the parametric conditions for the mission planning activity (e. g., asset types and numbers, task requirements, and asset capabilities) and to assure that the tasks as presented to the human planners would, in fact, be achievable to a specified level of accuracy.
C1 [Han, Xu; Pattipati, Krishna R.] Univ Connecticut, Dept Elect Engn, Storrs, CT 06029 USA.
[Bui, Huy] Global Equipment Serv, Ho Chi Minh City, Vietnam.
[Mandal, Suvasri] Qualtech Syst Inc, E Hartford, CT 06108 USA.
[Kleinman, David L.] USN, Dept Informat Sci, Postgrad Sch, Monterey, CA 93943 USA.
RP Han, X (reprint author), Univ Connecticut, Dept Elect Engn, Storrs, CT 06029 USA.
EM xuh06002@engr.uconn.edu; ngochuy55@gmail.com; suvasri.mandal@gmail.com;
krishna@engr.uconn.edu; dlkleinm@nps.edu
FU U.S. Office of Naval Research [N00014-09-1-0062, N00014-12-1-0238]
FX This work was supported by the U.S. Office of Naval Research under
Contracts N00014-09-1-0062 and N00014-12-1-0238. This paper was
recommended by Associate Editor J.-B. Yang.
NR 40
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U1 0
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 2168-2216
J9 IEEE T SYST MAN CY-S
JI IEEE Trans. Syst. Man Cybern. -Syst.
PD MAR
PY 2013
VL 43
IS 2
BP 237
EP 251
DI 10.1109/TSMCA.2012.2201467
PG 15
WC Automation & Control Systems; Computer Science, Cybernetics
SC Automation & Control Systems; Computer Science
GA 126KR
UT WOS:000317614400001
ER
PT J
AU Wang, ZH
Zhou, SL
Catipovic, J
Willett, P
AF Wang, Zhaohui
Zhou, Shengli
Catipovic, Josko
Willett, Peter
TI Asynchronous Multiuser Reception for OFDM in Underwater Acoustic
Communications
SO IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
LA English
DT Article
DE Asynchronous multiuser communications; OFDM; underwater acoustic
channels; overlapped truncation; interference aggregation
ID CHANNEL ESTIMATION; INTERFERENCE SUPPRESSION; NETWORKS; MITIGATION;
SYSTEMS; EQUALIZATION; CHALLENGES
AB Recently significant progress has been made on point-to-point underwater acoustic communications, and the interest has grown on the application of those techniques in multiuser communication settings, where the asynchronous nature of multiuser communication poses a grand challenge. This paper develops a time-asynchronous multiuser reception approach for orthogonal frequency-division multiplexing (OFDM) transmissions in underwater acoustic channels. The received data burst is segmented and apportioned to multiple processing units in an overlapped fashion, where the length of the processing unit depends on the maximum asynchronism among users on the OFDM block level. Interference cancellation is adopted to reduce the interblock interference between overlapped processing units. Within each processing unit, the residual inter-block interference from multiple users is aggregated as one external interference which can be parameterized. Multiuser channel estimation, data detection, and interference mitigation are then carried out in an iterative fashion. Simulation and emulated experimental results demonstrate the robustness of the proposed receiver with signal asynchronism among multiple users in both time-invariant and time-varying environments. It is observed that the receiver decoding performance degrades as the channel time variation and the maximum relative delay among users increase.
C1 [Wang, Zhaohui; Zhou, Shengli; Willett, Peter] Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA.
[Catipovic, Josko] USN, Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Wang, ZH (reprint author), Univ Connecticut, Dept Elect & Comp Engn, 371 Fairfield Way U-4157, Storrs, CT 06269 USA.
EM zhwang@engr.uconn.edu; shengli@engr.uconn.edu; josko.catipovic@navy.mil;
wil-lett@engr.uconn.edu
FU ONR [N00014-09-1-0704]; NSF [ECCS-1128581, CNS-1228936]
FX Z.-H. Wang and S. Zhou are supported by the ONR grant N00014-09-1-0704
(PECASE) as well as the NSF grants ECCS-1128581 and CNS-1228936.
NR 45
TC 15
Z9 15
U1 1
U2 21
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1536-1276
EI 1558-2248
J9 IEEE T WIREL COMMUN
JI IEEE Trans. Wirel. Commun.
PD MAR
PY 2013
VL 12
IS 3
BP 1050
EP 1061
DI 10.1109/TWC.2013.011713.120075
PG 12
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 115GY
UT WOS:000316801800009
ER
PT J
AU Chen, W
Mied, RP
AF Chen, Wei
Mied, Richard P.
TI Optical flow estimation for motion-compensated compression
SO IMAGE AND VISION COMPUTING
LA English
DT Article
DE Optical flow; Optical flow determination; Optical flow estimation;
Displacement estimation; Velocity estimation; Motion compensation;
Motion-compensated prediction; Motion-compensated interpolation;
Motion-Compensated Compression
ID IMAGE SEQUENCES; COMPUTATION; FIELDS; DISCONTINUITIES
AB The computation of optical flow within an image sequence is one of the most widely used techniques in computer vision. In this paper, we present a new approach to estimate the velocity field for motion-compensated compression. It is derived by a nonlinear system using the direct temporal integral of the brightness conservation constraint equation or the Displaced Frame Difference (DFD) equation. To solve the nonlinear system of equations, an adaptive framework is used, which employs velocity field modeling, a nonlinear least-squares model, Gauss-Newton and Levenberg-Marquardt techniques, and an algorithm of the progressive relaxation of the over-constraint. The three criteria by which successful motion-compensated compression is judged are 1.) The fidelity with which the estimated optical flow matches the ground truth motion, 2.) The relative absence of artifacts and "dirty window" effects for frame interpolation, and 3.) The cost to code the motion vector field. We base our estimated flow field on a single minimized target function, which leads to motion-compensated predictions without incurring penalties in any of these three criteria. In particular, we compare our proposed algorithm results with those from Block-Matching Algorithms (BMA), and show that with nearly the same number of displacement vectors per fixed block size, the performance of our algorithm exceeds that of BMA in all the three above points. We also test the algorithm on synthetic and natural image sequences, and use it to demonstrate applications for motion-compensated compression. Published by Elsevier B.V.
C1 [Chen, Wei; Mied, Richard P.] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
RP Chen, W (reprint author), USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
EM wei.chen@nrl.navy.mil
FU Office of Naval Research at the Naval Research Laboratory [WU-4279-02]
FX This research work was supported by the Office of Naval Research through
the project WU-4279-02 at the Naval Research Laboratory.
NR 41
TC 6
Z9 7
U1 0
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0262-8856
EI 1872-8138
J9 IMAGE VISION COMPUT
JI Image Vis. Comput.
PD MAR
PY 2013
VL 31
IS 3
BP 275
EP 289
DI 10.1016/j.imavis.2013.01.002
PG 15
WC Computer Science, Artificial Intelligence; Computer Science, Software
Engineering; Computer Science, Theory & Methods; Engineering, Electrical
& Electronic; Optics
SC Computer Science; Engineering; Optics
GA 122NK
UT WOS:000317324600005
ER
PT J
AU Edoh, K
Hughes, D
Katz, R
AF Edoh, Kossi
Hughes, Derke
Katz, Richard
TI NONLINEARITY IN CICADA SOUND SIGNALS
SO JOURNAL OF BIOLOGICAL SYSTEMS
LA English
DT Article
DE Cicada; Acoustic Signal; Chaos Theory; Burgers' Equation
ID TIME-SERIES; DETERMINISTIC CHAOS; PROPAGATION; ACOUSTICS; SYSTEM; CALLS;
MODEL
AB The nonlinearity of acoustic signals produced by male cicadas and their propagation in the atmosphere using the theory of dynamical systems and partial differential equations are explored in this paper. Previous research using a Volterra equation has shown that the signal data from the vibrations of cicada tymbals and that from the recordings of the acoustic signals about 5 inches away from the cicada exhibit some nonlinear characteristics. The experimental results shown in this paper confirm the nonlinearity of the signals farther from the cicada. A number of nonlinear acoustic signal propagation models are discussed - among them the Burgers' equation which has been implemented and whose results are quite promising.
C1 [Edoh, Kossi] N Carolina Agr & Tech State Univ, Dept Math, Greensboro, NC 27411 USA.
[Hughes, Derke; Katz, Richard] USN, Undersea Warfare Ctr, Div Newport, Newport, RI 02841 USA.
RP Edoh, K (reprint author), N Carolina Agr & Tech State Univ, Dept Math, 1601 East Market St, Greensboro, NC 27411 USA.
EM edoh@ncat.edu; derke.hughes@navy.mil; richard.katz@navy.mil
FU office of Naval Research, Summer Faculty Research Program - ASEE
FX The authors acknowledge the support provided by the office of Naval
Research, Summer Faculty Research Program - ASEE. The authors thank the
Associate Editor for making valuable detailed suggestions on how to
improve the paper.
NR 29
TC 1
Z9 1
U1 4
U2 24
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0218-3390
J9 J BIOL SYST
JI J. Biol. Syst.
PD MAR
PY 2013
VL 21
IS 1
AR 1350004
DI 10.1142/S0218339013500046
PG 13
WC Biology; Mathematical & Computational Biology
SC Life Sciences & Biomedicine - Other Topics; Mathematical & Computational
Biology
GA 130ID
UT WOS:000317906200004
ER
PT J
AU Latimer, KM
AF Latimer, Kelly M.
TI Chronic headache: Stop the pain before it starts
SO JOURNAL OF FAMILY PRACTICE
LA English
DT Article
ID TENSION-TYPE HEADACHE; QUALITY STANDARDS SUBCOMMITTEE; EPISODIC MIGRAINE
PREVENTION; DAILY-PERSISTENT HEADACHE; DOUBLE-BLIND; GENERAL-POPULATION;
TRANSFORMED MIGRAINE; MEDICATION-OVERUSE; FREQUENT HEADACHE; AMERICAN
ACADEMY
C1 [Latimer, Kelly M.] USN Hosp, Camp Lejeune Family Med Residency, Camp Lejeune, NC 28542 USA.
RP Latimer, KM (reprint author), USN Hosp, Camp Lejeune, NC 28542 USA.
EM kelly.latimer@med.navy.mil
NR 32
TC 2
Z9 2
U1 0
U2 3
PU DOWDEN HEALTH MEDIA
PI MONTVALE
PA 110 SUMMIT AVE, MONTVALE, NJ 07645-1712 USA
SN 0094-3509
J9 J FAM PRACTICE
JI J. Fam. Pract.
PD MAR
PY 2013
VL 62
IS 3
BP 126
EP 133
PG 8
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA 124TO
UT WOS:000317490100004
PM 23520582
ER
PT J
AU Zipf, RK
Gamezo, VN
Sapko, MJ
Marchewka, WP
Mohamed, KM
Oran, ES
Kessler, DA
Weiss, ES
Addis, JD
Karnack, FA
Sellers, DD
AF Zipf, R. K., Jr.
Gamezo, V. N.
Sapko, M. J.
Marchewka, W. P.
Mohamed, K. M.
Oran, E. S.
Kessler, D. A.
Weiss, E. S.
Addis, J. D.
Karnack, F. A.
Sellers, D. D.
TI Methane-air detonation experiments at NIOSH Lake Lynn Laboratory
SO JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
LA English
DT Article; Proceedings Paper
CT 8th International Symposium on Hazards, Prevention, and Mitigation of
Industrial Explosions
CY SEP 05-10, 2010
CL Keio Univ, Hiyoshi Campus, Yokohama, JAPAN
SP Keio Univ, Ctr Educ & Res Symbiot, Safe & Secure Syst Design, Global COE Program, Assoc Powder Proc Ind & Engn (APPIE), JEC Fund Project
HO Keio Univ, Hiyoshi Campus
DE Detonation; Methane; Experiments; Limits
ID MIXTURES
AB The methane-air detonation experiments are performed to characterize high pressure explosion processes that may occur in sealed areas of underground coal mines. The detonation tube used for these studies is 73 m long, 105 cm internal diameter, and closed at one end. The test gas is 97.5% methane with about 1.5% ethane, and the methane-air test mixtures varied between 4% and 19% methane by volume. Detonations were successfully initiated for mixtures containing between 5.3% and 15.5% methane. The detonations propagated with an average velocity between 1512 and 1863 m/s. Average overpressures recorded behind the first shock pressure peak varied between 1.2 and 1.7 MPa. The measured detonation velocities and pressures are close to their corresponding theoretical Chapman-Jouguet (CJ) detonation velocity (D-CJ) and detonation pressure (P-CJ). Outside of these detonability limits, failed detonations produced decaying detached shocks and flames propagating with velocities of approximately 1/2 D-CJ. Cell patterns on smokefoils during detonations were very irregular and showed secondary cell structures inside primary cells. The measured width of primary cells varied between 20 cm near the stoichiometry and 105 cm (tube diameter) near the limits. The largest detonation cell (105 cm wide and 170 cm long) was recorded for the mixture containing 15.3% methane. Published by Elsevier Ltd.
C1 [Zipf, R. K., Jr.; Sapko, M. J.; Marchewka, W. P.; Mohamed, K. M.; Weiss, E. S.; Addis, J. D.; Karnack, F. A.; Sellers, D. D.] NIOSH, OMSHR, Pittsburgh, PA 15236 USA.
[Gamezo, V. N.; Oran, E. S.; Kessler, D. A.] USN, Res Lab, Computat Phys & Fluid Dynam Lab, Washington, DC 20375 USA.
RP Zipf, RK (reprint author), POB 18070,626 Cochrans Mill Rd, Pittsburgh, PA 15236 USA.
EM rzipf@cdc.gov
NR 29
TC 20
Z9 22
U1 0
U2 14
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0950-4230
J9 J LOSS PREVENT PROC
JI J. Loss Prev. Process Ind.
PD MAR
PY 2013
VL 26
IS 2
SI SI
BP 295
EP 301
DI 10.1016/j.jlp.2011.05.003
PG 7
WC Engineering, Chemical
SC Engineering
GA 123EY
UT WOS:000317372400004
ER
PT J
AU Ogawa, T
Gamezo, VN
Oran, ES
AF Ogawa, Takanobu
Gamezo, Vadim N.
Oran, Elaine S.
TI Flame acceleration and transition to detonation in an array of square
obstacles
SO JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
LA English
DT Article; Proceedings Paper
CT 8th International Symposium on Hazards, Prevention, and Mitigation of
Industrial Explosions
CY SEP 05-10, 2010
CL Keio Univ, Hiyoshi Campus, Yokohama, JAPAN
SP Keio Univ, Ctr Educ & Res Symbiot, Safe & Secure Syst Design, Global COE Program, Assoc Powder Proc Ind & Engn (APPIE), JEC Fund Project
HO Keio Univ, Hiyoshi Campus
DE DDT; Flame acceleration; Numerical simulation
ID NUMERICAL-SIMULATION; PROPAGATION; COMBUSTION; MECHANISM
AB We study flame acceleration and DDT in a two-dimensional staggered array of square obstacles by solving the compressible multidimensional reactive Navier Stokes equations. The energy release rate for a stoichiometric H-2-air mixture is modeled by a one-step Arrhenius kinetics. The space between obstacles is filled with a stoichiometric H-2-air mixture at 1 atm and 298 K. Initially, the flow is at rest, and a flame is ignited at the center of the array. Computations show effects of the obstacles as a series of events leading to DDT. During the initial flame acceleration, the speed of the flame depends on the direction of flame propagation since some directions are more obstructed than others. This affects the macroscopic shape of the expanding burned region, which forms concave boundaries in more obstructed directions. As the flame accelerates, shocks form ahead of the flame, reflect from obstacles, and interact with the flame. There are more shock flame interactions in more obstructed directions, and this leads to a greater flame acceleration and stronger leading shocks. When the shocks become strong enough, their collisions with obstacles ignite the gas mixture, and detonations form. The simulation shows four independent DDT events within a 90-degree sector, all in more obstructed directions. Resulting detonations spread in all directions. Some parts of detonation fronts are quenched by diffractions around obstacles, but they are reignited by collisions of decoupled shocks, or overtaken by other detonations. Thus detonations continue to spread and quickly burn all the material between the obstacles. (C) 2011 Elsevier Ltd. All rights reserved.
C1 [Ogawa, Takanobu] Seikei Univ, Musashino, Tokyo 1808633, Japan.
[Gamezo, Vadim N.; Oran, Elaine S.] USN, Res Lab, Washington, DC 20375 USA.
RP Ogawa, T (reprint author), Seikei Univ, 3-3-1 Kichijoji Kitamachi, Musashino, Tokyo 1808633, Japan.
EM ogawa@st.seikei.ac.jp
NR 16
TC 8
Z9 8
U1 1
U2 16
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0950-4230
J9 J LOSS PREVENT PROC
JI J. Loss Prev. Process Ind.
PD MAR
PY 2013
VL 26
IS 2
SI SI
BP 355
EP 362
DI 10.1016/j.jlp.2011.12.009
PG 8
WC Engineering, Chemical
SC Engineering
GA 123EY
UT WOS:000317372400013
ER
PT J
AU Dixon, M
Verma, R
AF Dixon, Michael
Verma, Rohit
TI Sequence effects in service bundles: Implications for service design and
scheduling
SO JOURNAL OF OPERATIONS MANAGEMENT
LA English
DT Article
DE Service operations; Empirical research; Archival data analysis;
Econometric modeling
ID RETROSPECTIVE EVALUATIONS; COMBINING EXPERIENCES; DURATION NEGLECT;
BRAND EQUITY; SATISFACTION; CHOICE; MODEL; PRODUCTS; EVENTS; TIME
AB Researchers in several academic disciplines have investigated the effect of the sequence of pleasure and pain on the customer in service, experience, or healthcare-related interactions. Specifically, past research from psychology, behavioral economics, and other related fields suggests that the sequence effect can significantly impact a customer's overall impression of a service interaction. In this article, we test the influence that the sequence of discrete events separated by several days or weeks plays on customers' assessment of service bundles. If the relative importance of the sequence effect for discrete bundles is known, then a service designer and event scheduler can optimize and develop a better sequence of interactions for the customers, leading to higher satisfaction, loyalty, and repurchase. Using an extensive multi-year ticket purchase database from a world-renowned performing arts venue, we develop and test econometric models to predict season ticket subscription repurchase. The estimated models show that sequence effects do indeed play a significant role in determining customer repurchase of subscriptions. These results have important implications for effective service design and capacity planning for a wide range of service industries. This article suggests both managerial implications and future research opportunities related to sequence effects in service operations. (c) 2012 Elsevier B.V. All rights reserved.
C1 [Dixon, Michael] USN, Postgrad Sch, Arlington, VA USA.
[Verma, Rohit] Cornell Univ, Ithaca, NY 14853 USA.
RP Verma, R (reprint author), Cornell Univ, Ithaca, NY 14853 USA.
EM rv54@cornell.edu
NR 75
TC 15
Z9 15
U1 4
U2 55
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0272-6963
EI 1873-1317
J9 J OPER MANAG
JI J. Oper. Manag.
PD MAR
PY 2013
VL 31
IS 3
BP 138
EP 152
DI 10.1016/j.jom.2012.12.002
PG 15
WC Management; Operations Research & Management Science
SC Business & Economics; Operations Research & Management Science
GA 120LI
UT WOS:000317171400003
ER
PT J
AU Christophersen, M
Fadeyev, V
Ely, S
Phlips, BF
Sadrozinski, HFW
AF Christophersen, M.
Fadeyev, V.
Ely, S.
Phlips, B. F.
Sadrozinski, H. F. -W.
TI The effect of different dicing methods on the leakage currents of n-type
silicon diodes and strip sensors
SO SOLID-STATE ELECTRONICS
LA English
DT Article
DE Silicon diodes; Dark current; Quiescent current; Dry process dicing;
Radiation detectors
ID LAYER
AB All silicon wafers are singulated into individual chips after device processing (front-end) and before packaging. Silicon wafer singulation is dominated by blade- and laser-dicing techniques, both leave some damage. We are using scribing and cleaving to singulate silicon radiation detectors. Scribing and cleaving is known to leave almost damage free sidewalls when applied to III-V compound semiconductors. The technique is not well developed for dicing silicon devices. We used silicon sensors working in a full depletion mode to determine the damage from different scribing techniques (laser-, diamond, and etch-scribing). Etch-scribing shows very low leakage currents and enables cuts at the edge of the active area of the sensor/die. Furthermore, the leakage currents for laser- and diamond-scribed devices can be reduced by a gaseous sidewall etch step. Published by Elsevier Ltd.
C1 [Christophersen, M.; Phlips, B. F.] USN, Div Space Sci, Res Lab, Arlington, VA 22240 USA.
[Fadeyev, V.; Ely, S.; Sadrozinski, H. F. -W.] Univ Calif Santa Cruz, SCIPP, Santa Cruz, CA 95064 USA.
RP Christophersen, M (reprint author), USN, Div Space Sci, Res Lab, Code 7654, Arlington, VA 22240 USA.
EM marc.christophersen@nrl.navy.mil
RI Christophersen, Marc/B-6795-2008
FU Office of Naval Research (ONR)
FX We would like to thank the Institute for Nanoscience (NSI) at the U.S.
Naval Research Laboratory (NRL) and the NSI staff. This work has been
performed within the framework of the CERN RD50 Collaboration. The work
done at the NRL was sponsored by the Office of Naval Research (ONR).
Furthermore, we thank Loomis Industries Inc. for their help with
scribing and cleaving test devices.
NR 19
TC 8
Z9 8
U1 2
U2 8
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-1101
J9 SOLID STATE ELECTRON
JI Solid-State Electron.
PD MAR
PY 2013
VL 81
BP 8
EP 12
DI 10.1016/j.sse.2012.12.006
PG 5
WC Engineering, Electrical & Electronic; Physics, Applied; Physics,
Condensed Matter
SC Engineering; Physics
GA 124DQ
UT WOS:000317444400003
ER
PT J
AU Hwang, PA
Toporkov, JV
Sletten, MA
Menk, SP
AF Hwang, Paul A.
Toporkov, Jakov V.
Sletten, Mark A.
Menk, Steven P.
TI Mapping Surface Currents and Waves with Interferometric Synthetic
Aperture Radar in Coastal Waters: Observations of Wave Breaking in
Swell-Dominant Conditions
SO JOURNAL OF PHYSICAL OCEANOGRAPHY
LA English
DT Article
ID NONLINEAR INTEGRAL TRANSFORM; OCEAN WAVE; GRAVITY-WAVES; SAR
MEASUREMENTS; IMAGE SPECTRUM; SEA-SURFACE; WIND; WAVENUMBER; DEPENDENCE;
COMPONENTS
AB Airborne and spaceborne interferometric synthetic aperture radars (InSARs) produce surface velocity measurements at very high spatial resolutions over a large area. The data allow construction of the velocity strain field for highlighting ocean surface processes such as wave breaking and rip currents. Also, coherence between signals from two interferometric channels is a descriptor of the correlation condition of the surface roughness that scatters back the radar signals and it is an indication of the ocean surface turbulence. Wave breaking is a major turbulence source causing surface roughness decorrelation, thus the coherence parameter serves as an independent means for detecting wave breaking. The results of breaking detection using roughness decorrelation and critical local acceleration are comparable. In this paper, the breaking fraction in swell-dominant mixed seas along a cross-shore transect is compared with several steepness parameters characterizing different length scales of surface waves. The highest correlation coefficient (from 0.90 to 0.99) is between the breaking fraction and windsea mean square slope contributed primarily by short waves. This result reinforces the previous field observations showing that the length scales of breaking waves are much shorter than the energetic components near the spectral peak, although dominant waves and the associated wave group modulation are important in triggering the breaking process. The large spatial coverage of airborne or spaceborne operation further offers the opportunity to investigate evolution of the surface wave spectrum in high spatial (subkilometer) resolution. This capability is very useful for monitoring the coastal wave and current environment.
C1 [Hwang, Paul A.; Toporkov, Jakov V.; Sletten, Mark A.; Menk, Steven P.] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
RP Hwang, PA (reprint author), USN, Res Lab, Remote Sensing Div, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM paul.hwang@nrl.navy.mil
NR 59
TC 5
Z9 5
U1 2
U2 13
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-3670
J9 J PHYS OCEANOGR
JI J. Phys. Oceanogr.
PD MAR
PY 2013
VL 43
IS 3
BP 563
EP 582
DI 10.1175/JPO-D-12-0128.1
PG 20
WC Oceanography
SC Oceanography
GA 119RJ
UT WOS:000317114800006
ER
PT J
AU Donovan, DC
Boris, DR
Kulcinski, GL
Santarius, JF
Piefer, GR
AF Donovan, D. C.
Boris, D. R.
Kulcinski, G. L.
Santarius, J. F.
Piefer, G. R.
TI Measuring time of flight of fusion products in an inertial electrostatic
confinement fusion device for spatial profiling of fusion reactions
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID NEUTRON SOURCE; IEC
AB A new diagnostic has been developed that uses the time of flight (TOF) of the products from a nuclear fusion reaction to determine the location where the fusion reaction occurred. The TOF diagnostic uses charged particle detectors on opposing sides of the inertial electrostatic confinement (IEC) device that are coupled to high resolution timing electronics to measure the spatial profile of fusion reactions occurring between the two charged particle detectors. This diagnostic was constructed and tested by the University of Wisconsin-Madison Inertial Electrostatic Confinement Fusion Group in the IEC device, HOMER, which accelerates deuterium ions to fusion relevant energies in a high voltage (similar to 100 kV), spherically symmetric, electrostatic potential well [J. F. Santarius, G. L. Kulcinski, R. P. Ashley, D. R. Boris, B. B. Cipiti, S. K. Murali, G. R. Piefer, R. F. Radel, T. E. Radel, and A. L. Wehmeyer, Fusion Sci. Technol. 47, 1238 (2005)]. The TOF diagnostic detects the products of D(d,p)T reactions and determines where along a chord through the device the fusion event occurred. The diagnostic is also capable of using charged particle spectroscopy to determine the Doppler shift imparted to the fusion products by the center of mass energy of the fusion reactants. The TOF diagnostic is thus able to collect spatial profiles of the fusion reaction density along a chord through the device, coupled with the center of mass energy of the reactions occurring at each location. This provides levels of diagnostic detail never before achieved on an IEC device. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4793771]
C1 [Donovan, D. C.] Sandia Natl Labs, Livermore, CA 94550 USA.
[Boris, D. R.] USN, Res Lab, Washington, DC 20375 USA.
[Kulcinski, G. L.; Santarius, J. F.] Univ Wisconsin, Fus Technol Inst, Madison, WI 53706 USA.
[Piefer, G. R.] Phoenix Nucl Labs, Madison, WI 53713 USA.
RP Donovan, DC (reprint author), Sandia Natl Labs, 7011 East Ave, Livermore, CA 94550 USA.
NR 16
TC 2
Z9 2
U1 0
U2 13
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 MAR
PY 2013
VL 84
IS 3
AR 033501
DI 10.1063/1.4793771
PG 7
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 117PS
UT WOS:000316966200015
PM 23556815
ER
PT J
AU Muller, S
Ferrigno, C
Kuhnel, M
Schonherr, G
Becker, PA
Wolff, MT
Hertel, D
Schwarm, FW
Grinberg, V
Obst, M
Caballero, I
Pottschmidt, K
Furst, F
Kreykenbohm, I
Rothschild, RE
Hemphill, P
Nunez, SM
Torrejon, JM
Klochkov, D
Staubert, R
Wilms, J
AF Mueller, S.
Ferrigno, C.
Kuehnel, M.
Schoenherr, G.
Becker, P. A.
Wolff, M. T.
Hertel, D.
Schwarm, F. -W.
Grinberg, V.
Obst, M.
Caballero, I.
Pottschmidt, K.
Fuerst, F.
Kreykenbohm, I.
Rothschild, R. E.
Hemphill, P.
Nunez, S. M.
Torrejon, J. M.
Klochkov, D.
Staubert, R.
Wilms, J.
TI No anticorrelation between cyclotron line energy and X-ray flux in 4U
0115+634
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE X-rays: binaries; pulsars: individual 4U 0115+634; magnetic fields
ID TIMING-EXPLORER; GIANT OUTBURST; RESONANCE ENERGIES; ABSORPTION FEATURE;
PULSAR 4U-0115+63; MAGNETIC-FIELDS; HIGH-RESOLUTION; NEUTRON-STARS;
INTEGRAL DATA; EXO 2030+375
AB We report on an outburst of the high mass X-ray binary 4U 0115+634 with a pulse period of 3.6 s in 2008 March/April as observed with RXTE and INTEGRAL. During the outburst the neutron star's luminosity varied by a factor of 10 in the 3-50 keV band. In agreement with earlier work we find evidence of five cyclotron resonance scattering features at similar to 10.7, 21.8, 35.5, 46.7, and 59.7 keV. Previous work had found an anticorrelation between the fundamental cyclotron line energy and the X-ray flux. We show that this apparent anticorrelation is probably due to the unphysical interplay of parameters of the cyclotron line with the continuum models used previously, e. g., the negative and positive exponent power law (NPEX). For this model, we show that cyclotron line modeling erroneously leads to describing part of the exponential cutoff and the continuum variability, and not the cyclotron lines. When the X-ray continuum is modeled with a simple exponentially cutoff power law modified by a Gaussian emission feature around 10 keV, the correlation between the line energy and the flux vanishes, and the line parameters remain virtually constant over the outburst. We therefore conclude that the previously reported anticorrelation is an artifact of the assumptions adopted in the modeling of the continuum.
C1 [Mueller, S.; Kuehnel, M.; Hertel, D.; Schwarm, F. -W.; Grinberg, V.; Obst, M.; Kreykenbohm, I.; Wilms, J.] Univ Erlangen Nurnberg, Dr Karl Remeis Observ, D-96049 Bamberg, Germany.
[Mueller, S.; Kuehnel, M.; Hertel, D.; Schwarm, F. -W.; Grinberg, V.; Obst, M.; Kreykenbohm, I.; Wilms, J.] Univ Erlangen Nurnberg, ECAP, D-96049 Bamberg, Germany.
[Ferrigno, C.] Univ Geneva, ISDC Data Ctr Astrophys, CH-1290 Versoix, Switzerland.
[Schoenherr, G.] Leibniz Inst Astrophys Potsdam, D-14482 Potsdam, Germany.
[Becker, P. A.] George Mason Univ, Sch Phys Astron & Computat Sci, Fairfax, VA 22030 USA.
[Wolff, M. T.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Caballero, I.] Univ Paris 07, CEA Saclay, CNRS, DSM IRFU SAp UMR AIM 7158,CEA, F-91191 Gif Sur Yvette, France.
[Pottschmidt, K.] CRESST, Greenbelt, MD 20771 USA.
[Pottschmidt, K.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Pottschmidt, K.] UMBC, Ctr Space Sci & Technol, Baltimore, MD 21250 USA.
[Fuerst, F.] CALTECH, Space Radiat Lab, Pasadena, CA 91125 USA.
[Rothschild, R. E.; Hemphill, P.] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA.
[Nunez, S. M.; Torrejon, J. M.] Univ Alicante, Inst Univ Fis Aplicada Ciencias & Tecnol, E-03080 Alicante, Spain.
[Klochkov, D.; Staubert, R.] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany.
RP Muller, S (reprint author), Univ Erlangen Nurnberg, Dr Karl Remeis Observ, Sternwartstr 7, D-96049 Bamberg, Germany.
EM Sebastian.Mueller@sternwarte.uni-erlangen.de
RI Wilms, Joern/C-8116-2013; Kreykenbohm, Ingo/H-9659-2013; Torrejon, Jose
/K-6395-2014;
OI Wilms, Joern/0000-0003-2065-5410; Kreykenbohm, Ingo/0000-0001-7335-1803;
Torrejon, Jose /0000-0002-5967-5163; Hemphill, Paul/0000-0002-1676-6954
FU Bundesministerium fur Wirtschaft und Technologie under Deutsches Zentrum
fur Luft- und Raumfahrt [50OR0808, 50OR0905, 50OR1113]; Deutscher
Akademischer Austauschdienst; US Office of Naval Research; French Space
Agency CNES through CNRS; Spanish Ministerio de Ciencia, Tecnologia e
Innovacion (MCINN) [AYA2010-15431]; ESA; [AIB2010DE-00057]
FX We thank the referee for his/her insightful comments. We also thank the
schedulers of RXTE and INTEGRAL for their role in making this campaign
possible, and the International Space Science Institute in Bern,
Switzerland, for their hospitality. We acknowledge funding by the
Bundesministerium fur Wirtschaft und Technologie under Deutsches Zentrum
fur Luft- und Raumfahrt grants 50OR0808, 50OR0905, and 50OR1113, and by
the Deutscher Akademischer Austauschdienst. M. T. W. is supported by the
US Office of Naval Research. IC acknowledges financial support from the
French Space Agency CNES through CNRS. S.M.N. and J.M.T. acknowledge
support from the Spanish Ministerio de Ciencia, Tecnologia e Innovacion
(MCINN) through grant AYA2010-15431 and the use of the computer
facilities made available through the grant AIB2010DE-00057. This
research is in part based on observations with INTEGRAL, an ESA project
with instruments and science data centre funded by ESA member states
(especially the PI countries: Denmark, France, Germany, Italy,
Switzerland, Spain), Czech Republic, and Poland, and with the
participation of Russia and USA. We thank John E. Davis for the
development of the SLxfig module, which was used to create all figures
in the paper.
NR 58
TC 29
Z9 29
U1 0
U2 3
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD MAR
PY 2013
VL 551
AR A6
DI 10.1051/0004-6361/201220359
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 110QR
UT WOS:000316460600006
ER
PT J
AU Yang, R
Huang, L
Lai, YC
Grebogi, C
Pecora, LM
AF Yang, Rui
Huang, Liang
Lai, Ying-Cheng
Grebogi, Celso
Pecora, Louis M.
TI Harnessing quantum transport by transient chaos
SO CHAOS
LA English
DT Article
ID FRACTAL CONDUCTANCE FLUCTUATIONS; SINAI BILLIARD; SCATTERING; GRAPHENE;
CAVITIES; SOFT
AB Chaos has long been recognized to be generally advantageous from the perspective of control. In particular, the infinite number of unstable periodic orbits embedded in a chaotic set and the intrinsically sensitive dependence on initial conditions imply that a chaotic system can be controlled to a desirable state by using small perturbations. Investigation of chaos control, however, was largely limited to nonlinear dynamical systems in the classical realm. In this paper, we show that chaos may be used to modulate or harness quantum mechanical systems. To be concrete, we focus on quantum transport through nanostructures, a problem of considerable interest in nanoscience, where a key feature is conductance fluctuations. We articulate and demonstrate that chaos, more specifically transient chaos, can be effective in modulating the conductance-fluctuation patterns. Experimentally, this can be achieved by applying an external gate voltage in a device of suitable geometry to generate classically inaccessible potential barriers. Adjusting the gate voltage allows the characteristics of the dynamical invariant set responsible for transient chaos to be varied in a desirable manner which, in turn, can induce continuous changes in the statistical characteristics of the quantum conductance-fluctuation pattern. To understand the physical mechanism of our scheme, we develop a theory based on analyzing the spectrum of the generalized non-Hermitian Hamiltonian that includes the effect of leads, or electronic waveguides, as self-energy terms. As the escape rate of the underlying non-attracting chaotic set is increased, the imaginary part of the complex eigenenergy becomes increasingly large so that pointer states are more difficult to form, making smoother the conductance-fluctuation pattern. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4790863]
C1 [Yang, Rui; Huang, Liang; Lai, Ying-Cheng] Arizona State Univ, Sch Elect Comp & Energy Engn, Tempe, AZ 85287 USA.
[Huang, Liang] Lanzhou Univ, Inst Computat Phys & Complex Syst, Lanzhou 730000, Gansu, Peoples R China.
[Huang, Liang] Lanzhou Univ, Key Lab Magnetism & Magnet Mat MOE, Lanzhou 730000, Peoples R China.
[Lai, Ying-Cheng] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
[Lai, Ying-Cheng; Grebogi, Celso] Univ Aberdeen, Univ London Kings Coll, Inst Complex Syst & Math Biol, Sch Nat & Comp Sci, Aberdeen AB24 3UE, Scotland.
[Pecora, Louis M.] USN, Res Lab, Washington, DC 20375 USA.
RP Yang, R (reprint author), Arizona State Univ, Sch Elect Comp & Energy Engn, Tempe, AZ 85287 USA.
RI Huang, Liang/A-1671-2009
FU AFOSR [FA9550-12-1-0095]; ONR [N00014-08-1-0627]; NSFC [11005053]
FX We thank P.-P. Li for assisting in generating Fig. 4. This work was
supported by AFOSR under Grant No. FA9550-12-1-0095 and by ONR under
Grant No. N00014-08-1-0627. L. H. was also supported by NSFC under Grant
No. 11005053.
NR 43
TC 7
Z9 7
U1 0
U2 20
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1054-1500
EI 1089-7682
J9 CHAOS
JI Chaos
PD MAR
PY 2013
VL 23
IS 1
AR 013125
DI 10.1063/1.4790863
PG 9
WC Mathematics, Applied; Physics, Mathematical
SC Mathematics; Physics
GA 117KA
UT WOS:000316950900025
PM 23556962
ER
PT J
AU Sapsford, KE
Algar, WR
Berti, L
Gemmill, KB
Casey, BJ
Oh, E
Stewart, MH
Medintz, IL
AF Sapsford, Kim E.
Algar, W. Russ
Berti, Lorenzo
Gemmill, Kelly Boeneman
Casey, Brendan J.
Oh, Eunkeu
Stewart, Michael H.
Medintz, Igor L.
TI Functionalizing Nanoparticles with Biological Molecules: Developing
Chemistries that Facilitate Nanotechnology
SO CHEMICAL REVIEWS
LA English
DT Review
ID IRON-OXIDE NANOPARTICLES; SOLID LIPID NANOPARTICLES; WALLED CARBON
NANOTUBES; RESONANCE ENERGY-TRANSFER; MESOPOROUS SILICA NANOPARTICLES;
CALCIUM-PHOSPHATE NANOPARTICLES; COWPEA MOSAIC-VIRUS; DRUG-DELIVERY
SYSTEMS; SEMICONDUCTOR QUANTUM DOTS; HISTIDINE-TAGGED PROTEINS
C1 [Sapsford, Kim E.; Casey, Brendan J.] US FDA, Div Biol, Dept Chem & Mat Sci, Off Sci & Engn Labs, Silver Spring, MD 20993 USA.
[Gemmill, Kelly Boeneman; Medintz, Igor L.] USN, Res Lab, Ctr Bio Mol Sci & Engn Code 6900, Washington, DC 20375 USA.
[Oh, Eunkeu; Stewart, Michael H.] USN, Res Lab, Div Opt Sci Code 5611, Washington, DC 20375 USA.
[Algar, W. Russ] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA.
[Berti, Lorenzo] Univ Calif Davis, Sch Med, Dept Biochem & Mol Med, Sacramento, CA 95817 USA.
[Oh, Eunkeu] Sotera Def Solut, Crofton, MD 21114 USA.
RP Medintz, IL (reprint author), USN, Res Lab, Ctr Bio Mol Sci & Engn Code 6900, Washington, DC 20375 USA.
EM Igor.medintz@nrl.navy.mil
FU NRL; NRL NSI; ONR; DARPA; DTRA-JSTO MIPR [B112582M]; Natural Sciences
and Engineering Research Council of Canada (NSERC); Susan G. Komen for
the Cure; Division of Biology, FDA; Critical Path Initiative
FX The authors thank Dr. Melissa Massey for helpful comments on the
manuscript. The authors acknowledge NRL, NRL NSI, ONR, DARPA, and
DTRA-JSTO MIPR No. B112582M for financial support. W.R.A. is grateful to
the Natural Sciences and Engineering Research Council of Canada (NSERC)
for a postdoctoral fellowship. L.B. acknowledges Susan G. Komen for the
Cure for supporting his research through a Career Catalyst Award. K.E.S.
acknowledges the Division of Biology, FDA, and the Critical Path
Initiative for financial support. K.E.S thanks Dr. T. Umbreit and Dr. K.
S. Phillips for their comments and review of this manuscript. This paper
reflects the current thinking and experience of the authors. The mention
of commercial products, their sources, or their use in connection with
material reported herein is not to be construed as either an actual or
implied endorsement of such products by the Department of Health and
Human Services.
NR 2075
TC 409
Z9 412
U1 121
U2 1392
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0009-2665
EI 1520-6890
J9 CHEM REV
JI Chem. Rev.
PD MAR
PY 2013
VL 113
IS 3
BP 1904
EP 2074
DI 10.1021/cr300143v
PG 171
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107TL
UT WOS:000316243600015
PM 23432378
ER
PT J
AU Cook, AM
Joye, CD
Kimura, T
Wright, EL
Calame, JP
AF Cook, Alan M.
Joye, Colin D.
Kimura, Takuji
Wright, Edward L.
Calame, Jeffrey P.
TI Broadband 220-GHz Vacuum Window for a Traveling-Wave Tube Amplifier
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article
DE High-power amplifiers; millimeter wave (mmW) devices; mmW measurements
AB We present electromagnetic cold-test measurements of BeO ceramic pillbox vacuum windows for a 220-GHz traveling-wave tube amplifier. Transmission and reflection measurements show better than 20 dB return loss over a 25 GHz bandwidth, with band centers in the range of 212-225 GHz. We observe tuning of the window response as the circular waveguide length is changed. High-power testing is performed at 2.5W, 100% duty at 218 GHz.
C1 [Cook, Alan M.; Joye, Colin D.; Calame, Jeffrey P.] USN, Res Lab, Washington, DC 20375 USA.
[Kimura, Takuji] Commun & Power Ind Inc, Palo Alto, CA 94304 USA.
[Wright, Edward L.] Beam Wave Res Inc, Bethesda, MD 20814 USA.
RP Cook, AM (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM alan.cook@nrl.navy.mil; colin.joye@nrl.navy.mil; takuji.kimura@cpii.com;
ewright.bwresearch@comcast.net; jeffrey.calame@nrl.navy.mil
RI Cook, Alan/D-2557-2013
FU U.S. Office of Naval Research; DARPA
FX This work was supported by the U.S. Office of Naval Research and by
DARPA. The review of this brief was arranged by Editor R. Carter.
Approved for public release, distribution unlimited.
NR 12
TC 5
Z9 7
U1 0
U2 13
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9383
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD MAR
PY 2013
VL 60
IS 3
BP 1257
EP 1259
DI 10.1109/TED.2012.2232929
PG 3
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 115NW
UT WOS:000316820000052
ER
PT J
AU MacKenzie, CA
Barker, K
AF MacKenzie, Cameron A.
Barker, Kash
TI Empirical Data and Regression Analysis for Estimation of Infrastructure
Resilience with Application to Electric Power Outages
SO JOURNAL OF INFRASTRUCTURE SYSTEMS
LA English
DT Article
DE Infrastructure; Electric power; Data analysis; Natural disasters;
Resilience; Interdependence; Regression; Power outages
ID SYSTEMS; INOPERABILITY; INPUT; INTERDEPENDENCIES; SIMULATION;
HURRICANES; FRAMEWORK; RECOVERY; MODELS
AB Recent natural disasters have highlighted the need for increased planning for disruptive events. Forecasting damage and time that a system will be inoperable is important for disruption planning. The resilience of critical infrastructure systems, or their ability to recover quickly from a disruption, can mitigate adverse consequences of the disruption. This paper quantifies the resilience of a critical infrastructure sector through the dynamic inoperability input-output model (DIIM). The DIIM, which describes how inoperability propagates through a set of interdependent industry and infrastructure sectors following a disruptive event, includes a resilience parameter that has not yet been adequately assessed. This paper provides a data-driven approach to derive the resilience parameter through regression models. Data may contain different disruption scenarios, and regression models can incorporate these scenarios through the use of categorical or dummy variables. A mixed-effects model offers an alternate approach of accounting for these scenarios, and these models estimate parameters based on the combination of all scenarios (fixed effects) and an individual scenario (random effects). These regression models are illustrated with electric power outage data and a regional disruption that uses the DIIM to model production losses in Oklahoma following an electric power outage. DOI: 10.1061/(ASCE)IS.1943-555X.0000103. (c) 2013 American Society of Civil Engineers.
C1 [MacKenzie, Cameron A.] USN, Def Resources Management Inst, Postgrad Sch, Monterey, CA 93943 USA.
[MacKenzie, Cameron A.; Barker, Kash] Univ Oklahoma, Sch Ind & Syst Engn, Norman, OK 73019 USA.
RP MacKenzie, CA (reprint author), USN, Def Resources Management Inst, Postgrad Sch, 699 Dyer Rd,Bldg 234, Monterey, CA 93943 USA.
EM camacken@nps.edu; kashbarker@ou.edu
OI Barker, Kash/0000-0002-0142-1558
FU National Science Foundation, Division of Civil, Mechanical, and
Manufacturing Innovation [0927299]
FX This work was funded in part by the National Science Foundation,
Division of Civil, Mechanical, and Manufacturing Innovation, under award
0927299. The authors also thank the thoughtful suggestions of the
reviewers, whose comments contributed significantly to this paper.
NR 58
TC 11
Z9 11
U1 6
U2 41
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 1076-0342
J9 J INFRASTRUCT SYST
JI J. Infrastruct. Syst.
PD MAR
PY 2013
VL 19
IS 1
BP 25
EP 35
DI 10.1061/(ASCE)IS.1943-555X.0000103
PG 11
WC Engineering, Civil
SC Engineering
GA 112AJ
UT WOS:000316563500003
ER
PT J
AU Young, G
Roberts, C
Dunham, S
AF Young, Gregory
Roberts, Colin
Dunham, Steven
TI Combustion Behavior of Solid Oxidizer/Gaseous Fuel Diffusion Flames
SO JOURNAL OF PROPULSION AND POWER
LA English
DT Article; Proceedings Paper
CT 50th AIAA Aerospace Sciences Meeting and Exhibit including the New
Horizons Forum and Aerospace Exposition
CY JAN 06-13, 2012
CL Nashville, TN
SP AIAA, US AF Off Sci Res
ID AMMONIUM DINITRAMIDE DECOMPOSITION; THERMAL-DECOMPOSITION; ENERGETIC
MATERIALS; BURNING RATE; PART 1; PERCHLORATE; KINETICS; NITRATE;
TEMPERATURE; MECHANISM
AB The diffusion flame combustion behavior of several solid oxidizers (ammonium nitrate, phase-stabilized ammonium nitrate, ammonium perchlorate, and ammonium dinitramide) in combination with a hydrocarbon fuel (ethylene) was examined. The oxidizers were first analyzed by differential scanning calorimetry, thermal gravimetric analysis, and evolved gas analysis to gain an understanding of their basic decomposition characteristics. Next, an opposed flow burner was used to establish a diffusion flame between the decomposition products of the oxidizer(s) and the fuel. Regression rates of the solid oxidizer were measured by a linear variable displacement transducer as a function of fuel flow rate. Ammonium dinitramide demonstrated the highest linear regression rate characteristics by up to two orders of magnitude, followed by anunonium perchlorate, phase-stabilized ammonium nitrate, and finally ammonium nitrate. When comparing mass burning rates, ammonium perchlorate compares favorably to solid fuels such as hydroxyl-terminated polybutadiene. In addition, the flame zone(s) were imaged via high-speed photography to provide detailed information of flame characteristics. Flame imaging revealed large melt layers and boiling type behavior for ammonium nitrate and phase-stabilized ammonium nitrate as well as droplet ejection from the melt layer. The goal of this study was to gain an understanding of the fundamental combustion behavior of a diffusion flame between a solid oxidizer and a hydrocarbon fuel as a stepping-stone to more complex systems such as reverse hybrid rockets.
C1 [Young, Gregory; Roberts, Colin; Dunham, Steven] USN, Ctr Surface Warfare, Indian Head Div, RTD&E Dept, Indian Head, MD 20640 USA.
RP Young, G (reprint author), USN, Ctr Surface Warfare, Indian Head Div, RTD&E Dept, Indian Head, MD 20640 USA.
EM gregory.young1@navy.mil
NR 40
TC 2
Z9 2
U1 1
U2 14
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 MAR-APR
PY 2013
VL 29
IS 2
BP 362
EP 370
DI 10.2514/1.B34568
PG 9
WC Engineering, Aerospace
SC Engineering
GA 110HM
UT WOS:000316433200009
ER
PT J
AU Chiu, LYS
Reeder, DB
Chang, YY
Chen, CF
Chiu, CS
Lynch, JF
AF Chiu, Linus Y. S.
Reeder, D. Benjamin
Chang, Yuan-Ying
Chen, Chi-Fang
Chiu, Ching-Sang
Lynch, James F.
TI Enhanced acoustic mode coupling resulting from an internal solitary wave
approaching the shelfbreak in the South China Sea
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID SOUND-PROPAGATION; PENETRABLE BOTTOM; SHALLOW-WATER; OCEAN; SOLITONS;
INTENSITY; EQUATION; PACKETS; WEDGE; RANGE
AB Internal waves and bathymetric variation create time-and space-dependent alterations in the ocean acoustic waveguide, and cause subsequent coupling of acoustic energy between propagating normal modes. In this paper, the criterion for adiabatic invariance is extended to the case of an internal solitary wave (ISW) encountering a sloping bathymetry (i.e., continental shelfbreak). Predictions based on the extended criterion for adiabatic invariance are compared to experimental observations from the Asian Seas International Acoustics Experiment. Using a mode 1 starter field, results demonstrate time-dependent coupling of mode 1 energy to higher adjacent modes, followed by abrupt coupling of mode 5-7 energy to nonadjacent modes 8-20, produces enhanced mode coupling and higher received levels downrange of the oceanographic and bathymetric features. Numerical simulations demonstrate that increasing ISW amplitude and seafloor slope enhance the coupling of energy to adjacent and nonadjacent modes. This enhanced coupling is the direct result of the simultaneous influence of the ISW and its proximity to the shelfbreak, and, compared to the individual effect of the ISW or shelfbreak, has the capacity to scatter 2-4 times the amount of acoustic energy from below the thermocline into the upper water column beyond the shelfbreak in realistic environments. (C) 2013 Acoustical Society of America. [http://dx.doi.org/10.1121/1.4789358]
C1 [Chiu, Linus Y. S.] Natl Sun Yat Sen Univ, Inst Appl Marine Phys & Undersea Technol, Kaohsiung 80424, Taiwan.
[Reeder, D. Benjamin; Chen, Chi-Fang] USN, Dept Oceanog, Postgrad Sch, Monterey, CA 93943 USA.
[Chang, Yuan-Ying; Chen, Chi-Fang] Natl Taiwan Univ, Dept Engn Sci & Ocean Engn, Taipei 10617, Taiwan.
[Lynch, James F.] Woods Hole Oceanog Inst, Dept Appl Ocean Phys & Engn, Woods Hole, MA 02543 USA.
RP Chiu, LYS (reprint author), Natl Sun Yat Sen Univ, Inst Appl Marine Phys & Undersea Technol, 70 Lienhai Rd, Kaohsiung 80424, Taiwan.
EM linus@mail.nsysu.edu.tw
FU National Science Council of Taiwan; U.S. Office of Naval Research;
National Science Council of Taiwan [NSC 100-2611-M-110-017-]
FX The ASIAEX and NLIWI experiments were supported jointly by the National
Science Council of Taiwan and the U.S. Office of Naval Research. Special
thanks are offered to all of the ASIAEX and NLIWI experiment
participants for their successful efforts, to the lead Principal
Investigators from the U.S. and Taiwan, and to the crew members of the
research vessels R/V OR1, R/V OR2, and R/V OR3. Special thanks are also
offered to Dr. Ying-Tsong Lin for his useful comments on this
manuscript. This work is supported by the National Science Council of
Taiwan with project No. NSC 100-2611-M-110-017-.
NR 31
TC 3
Z9 3
U1 0
U2 8
PU ACOUSTICAL SOC AMER AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0001-4966
J9 J ACOUST SOC AM
JI J. Acoust. Soc. Am.
PD MAR
PY 2013
VL 133
IS 3
BP 1306
EP 1319
DI 10.1121/1.4789358
PG 14
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 108NP
UT WOS:000316300900024
PM 23464003
ER
PT J
AU Shaffer, JW
Moretti, D
Jarvis, S
Tyack, P
Johnson, M
AF Shaffer, Jessica Ward
Moretti, David
Jarvis, Susan
Tyack, Peter
Johnson, Mark
TI Effective beam pattern of the Blainville's beaked whale (Mesoplodon
densirostris) and implications for passive acoustic monitoring
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID ECHOLOCATION SIGNALS; PHYSETER-MACROCEPHALUS; CLICKS; BEHAVIOR; TAG
AB The presence of beaked whales in mass-strandings coincident with navy maneuvers has prompted the development of methods to detect these cryptic animals. Blainville's beaked whales, Mesoplodon densirostris, produce distinctive echolocation clicks during long foraging dives making passive acoustic detection a possibility. However, performance of passive acoustic monitoring depends upon the source level, beam pattern, and clicking behavior of the whales. In this study, clicks recorded from Digital acoustic Tags (DTags) attached to four M. densirostris were linked to simultaneous recordings from an 82-hydrophone bottom-mounted array to derive the source level and beam pattern of the clicks, as steps towards estimating their detectability. The mean estimated on-axis apparent source level for the four whales was 201 dB(rms97). The mean 3 dB beamwidth and directivity index, estimated from sequences of clicks directed towards the far-field hydrophones, were 13 degrees and 23 dB, respectively. While searching for prey, Blainville's beaked whales scan their heads horizontally at a mean rate of 3.6 degrees/s over an angular range of some +/-10 degrees. Thus, while the DI indicates a narrow beam, the area of ensonification over a complete foraging dive is large given the combined effects of body and head movements associated with foraging. [http://dx.doi.org/10.1121/1.4776177]
C1 [Shaffer, Jessica Ward; Moretti, David; Jarvis, Susan] USN, Undersea Warfare Ctr, Div Newport, Newport, RI 02841 USA.
[Tyack, Peter; Johnson, Mark] Univ St Andrews, Sea Mammal Res Unit, St Andrews KY16 8LB, Fife, Scotland.
RP Shaffer, JW (reprint author), USN, Undersea Warfare Ctr, Div Newport, Code 74,1176 Howell St, Newport, RI 02841 USA.
EM jessica.a.shaffer@navy.mil
RI Tyack, Peter/D-6209-2013
OI Tyack, Peter/0000-0002-8409-4790
FU Environmental Readiness Division of the U.S. Navy [N45]; U.S. Office of
Naval Research; U.S. Chief of Naval Operations Submarine Warfare
Division [IWS5]; Strategic Environmental Research and Development
Program; National Oceanographic Partnership Program: the Ocean Acoustics
Program of the U.S. National Marine Fisheries Service, Office of
Protected Resources; International Association of Oil and Gas Producers
Joint Industry Programme on Exploration and Production Sound and Marine
Life; Marine Alliance for Science and Technology Scotland
FX These data were collected during the 2006 Bahamas Species Verification
Test and 2007 Behavioral Response Study funded by the Environmental
Readiness Division of the U.S. Navy (N45), U.S. Office of Naval
Research, U.S. Chief of Naval Operations Submarine Warfare Division
(Undersea Surveillance IWS5) and Strategic Environmental Research and
Development Program. We would like to thank the entire field team that
participated in the 2007 BRS for supporting the effort that provided the
data for this study. This work was funded by two partners under the
National Oceanographic Partnership Program: the Ocean Acoustics Program
of the U.S. National Marine Fisheries Service, Office of Protected
Resources, and the International Association of Oil and Gas Producers
Joint Industry Programme on Exploration and Production Sound and Marine
Life. Research permits were issued to John Boreman (US NMFS 1121-1900),
Peter Tyack (US NMFS 981-1578), and Ian Boyd (Bahamas permit #02/07).
The tagging research was approved by the WHOI and Bahamas Marine Mammal
Research Organisation Institutional Animal Care and Use Committees. M.J.
and P.T. are supported by the Marine Alliance for Science and Technology
Scotland.
NR 44
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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 MAR
PY 2013
VL 133
IS 3
BP 1770
EP 1784
DI 10.1121/1.4776177
PG 15
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 108NP
UT WOS:000316300900067
PM 23464046
ER
PT J
AU Finneran, JJ
AF Finneran, James J.
TI Dolphin "packet" use during long-range echolocation tasks
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID AUTOMATIC GAIN-CONTROL; TURSIOPS-TRUNCATUS; BOTTLENOSE DOLPHIN; SIGNALS;
TARGET
AB When echolocating, dolphins typically emit a single broadband "click," then wait to receive the echo before emitting another click. However, previous studies have shown that during long-range echolocation tasks, they may instead emit a burst, or " packet," of several clicks, then wait for the packet of echoes to return before emitting another packet of clicks. The reasons for the use of packets are unknown. In this study, packet use was examined by having trained bottlenose dolphins perform long-range echolocation tasks. The tasks featured "phantom" echoes produced by capturing the dolphin's outgoing echolocation clicks, convolving the clicks with an impulse response to create an echo waveform, and then broadcasting the delayed, scaled echo to the dolphin. Dolphins were trained to report the presence of phantom echoes or a change in phantom echoes. Target range varied from 25 to 800 m. At ranges below 75 m, the dolphins rarely used packets. As the range increased beyond 75m, two of the three dolphins increasingly produced packets, while the third dolphin instead utilized very high click repetition rates. The use of click packets appeared to be governed more by echo delay (target range) than echo amplitude. [http://dx.doi.org/10.1121/1.4788997]
C1 USN, Marine Mammal Program, Space & Naval Warfare Syst Ctr Pacific, San Diego, CA 92152 USA.
RP Finneran, JJ (reprint author), USN, Marine Mammal Program, Space & Naval Warfare Syst Ctr Pacific, Code 71510,53560 Hull St, San Diego, CA 92152 USA.
FU SSC Pacific Naval Innovative Science and Engineering (NISE) program
FX The author greatly appreciates the efforts of Megan Tormey, Kimberly
Bahktiari, Amy Black, Arial Brewer, and Gavin Goya who trained the
bottlenose dolphins. The author thanks Teri Wu for assistance with the
data collection and analysis, and Randall Dear and Jim Powell for
logistic support. The author also thanks Patrick Moore, Dorian Houser,
Brian Branstetter, and Jason Mulsow for many helpful discussions on the
experimental approach and data. The study followed a protocol approved
by the Institutional Animal Care and Use Committee at 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 26
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U1 1
U2 26
PU ACOUSTICAL SOC AMER AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0001-4966
J9 J ACOUST SOC AM
JI J. Acoust. Soc. Am.
PD MAR
PY 2013
VL 133
IS 3
BP 1796
EP 1810
DI 10.1121/1.4788997
PG 15
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 108NP
UT WOS:000316300900069
PM 23464048
ER
PT J
AU Branstetter, BK
Trickey, JS
Bakhtiari, K
Black, A
Aihara, H
Finneran, JJ
AF Branstetter, Brian K.
Trickey, Jennifer S.
Bakhtiari, Kimberly
Black, Amy
Aihara, Hitomi
Finneran, James J.
TI Auditory masking patterns in bottlenose dolphins (Tursiops truncatus)
with natural, anthropogenic, and synthesized noise
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID MODULATION TRANSFER-FUNCTIONS; VENTRAL COCHLEAR NUCLEUS;
DELPHINAPTERUS-LEUCAS; CRITICAL BANDWIDTH; SIGNAL DURATION; CRITICAL
RATIOS; RELEASE; THRESHOLDS; PINNIPEDS; CUES
AB Auditory masking occurs when one sound ( usually called noise) interferes with the detection, discrimination, or recognition of another sound ( usually called the signal). This interference can lead to detriments in a listener's ability to communicate, forage, and navigate. Most studies of auditory masking in marine mammals have been limited to detection thresholds of pure tones in Gaussian noise. Environmental noise marine mammals encounter is often more complex. In the current study, detection thresholds were estimated for bottlenose dolphins with a 10 kHz signal masked by natural, anthropogenic, and synthesized noise. Using a band-widening paradigm, detection thresholds exhibited a pattern where signal thresholds increased proportionally to bandwidth for narrow band noise. However, when noise bandwidth was greater than a critical band, masking patterns diverged. Subsequent experiments demonstrated that the auditory mechanisms responsible for the divergent masking patterns were related to across-channel comparison and within-valley listening. (C) 2013 Acoustical Society of America. [http://dx.doi.org/10.1121/1.4789939]
C1 [Branstetter, Brian K.] Natl Marine Mammal Fdn, San Diego, CA 92106 USA.
[Trickey, Jennifer S.; Bakhtiari, Kimberly; Black, Amy; Aihara, Hitomi] G2 Software Syst Inc, San Diego, CA 92110 USA.
[Finneran, James J.] USN, Marine Mammal Program, Space & Naval Warfare Syst Ctr Pacific, San Diego, CA 92152 USA.
RP Branstetter, BK (reprint author), Natl Marine Mammal Fdn, 2240 Shelter Isl Dr,200, San Diego, CA 92106 USA.
EM branstet@gmail.com
OI Trickey, Jennifer/0000-0002-6080-8744
FU U.S. Navy Marine Mammal Program; Office of Naval Research
FX We would like to thank the staff and interns of the U.S. Navy Marine
Mammal Program for their support. We also thank Marc O. Lammers and
Jennifer Miksis-Olds for generously providing us with field recordings
of natural noise. Financial support was provided by the Office of Naval
Research.
NR 32
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U1 6
U2 39
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 MAR
PY 2013
VL 133
IS 3
BP 1811
EP 1818
DI 10.1121/1.4789939
PG 8
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 108NP
UT WOS:000316300900070
PM 23464049
ER
PT J
AU Finneran, JJ
Schlundt, CE
AF Finneran, James J.
Schlundt, Carolyn E.
TI Effects of fatiguing tone frequency on temporary threshold shift in
bottlenose dolphins (Tursiops truncatus)
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID OCTAVE-BAND NOISE; MASKED HEARING THRESHOLDS; PORPOISE
PHOCOENA-PHOCOENA; DELPHINAPTERUS-LEUCAS; EXPOSURE; RECOVERY; LEVEL;
INTENSITIES; POTENTIALS; DURATION
AB Temporary threshold shift (TTS) was measured in two bottlenose dolphins (Tursiops truncatus) after exposure to 16-s tones between 3 and 80 kHz to examine the effects of exposure frequency on the onset, growth, and recovery of TTS. Hearing thresholds were measured approximately one-half octave above the exposure frequency using a behavioral response paradigm featuring an adaptive staircase procedure. Results show frequency-specific differences in TTS onset and growth, and suggest increased susceptibility to auditory fatigue for frequencies between approximately 10 and 30 kHz. Between 3 and 56 kHz, the relationship between exposure frequency and the exposure level required to induce 6 dB of TTS, measured 4min post-exposure, agrees closely with an auditory weighting function for bottlenose dolphins developed from equal loudness contours [Finneran and Schlundt. (2011). J. Acoust. Soc. Am. 130, 3124-3136]. [http://dx.doi.org/10.1121/1.4776211]
C1 [Finneran, James J.] USN, Marine Mammal Program, Space & Naval Warfare Syst Ctr Pacific, San Diego, CA 92152 USA.
[Schlundt, Carolyn E.] ITT Exelis Corp, San Diego, CA 92110 USA.
RP Finneran, JJ (reprint author), USN, Marine Mammal Program, Space & Naval Warfare Syst Ctr Pacific, Code 71510,53560 Hull St, San Diego, CA 92152 USA.
EM james.finneran@navy.mil
FU U.S. Office of Naval Research Marine Mammal Science and Technology
Program [32]
FX We thank R. Dear, L. Green, J. Powell, E. Robinson, M. Tormey, K.
Bakhtiari, H. Aihara, M. Sloan, K. Wickersham, and G. Goya for animal
training and logistics support. Financial support was provided by the
U.S. Office of Naval Research Marine Mammal Science and Technology
Program (Code 32). The study followed a protocol approved by the
Institutional Animal Care and Use Committee at SSC Pacific, and the US
Navy Bureau of Medicine and Surgery.
NR 41
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U1 2
U2 46
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 MAR
PY 2013
VL 133
IS 3
BP 1819
EP 1826
DI 10.1121/1.4776211
PG 8
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 108NP
UT WOS:000316300900071
PM 23464050
ER
PT J
AU Wilson, DK
Valente, D
Nykaza, ET
Pettit, CL
AF Wilson, D. Keith
Valente, Dan
Nykaza, Edward T.
Pettit, Chris L.
TI Information-criterion based selection of models for community noise
annoyance
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID EXPOSURE
AB Statistical evidence for various models relating day-night sound level (DNL) to community noise annoyance is assessed with the Akaike information criterion. In particular, community-specific adjustments such as the community tolerance level (CTL, the DNL at which 50% of survey respondents are highly annoyed) and community tolerance spread (CTS, the difference between the DNL at which 90% and 10% are highly annoyed) are considered. The results strongly support models characterizing annoyance on a community-by-community basis, rather than with complete pooling and analysis of all available surveys. The most likely model was found to be a 2-parameter logistic model, with CTL and CTS fit independently to survey data from each community.
C1 [Wilson, D. Keith] USA, Engineer Res & Dev Ctr, Hanover, NH 03755 USA.
[Valente, Dan; Nykaza, Edward T.] USA, Engineer Res & Dev Ctr, Champaign, IL 61826 USA.
[Pettit, Chris L.] USN Acad, Dept Aerosp Engn, Annapolis, MD 21402 USA.
RP Wilson, DK (reprint author), USA, Engineer Res & Dev Ctr, 72 Lyme Rd, Hanover, NH 03755 USA.
EM d.keith.wilson@usace.army.mil; daniel.p.valente@usace.army.mil;
edward.t.nykaza@erdc.dren.mil; pettitcl@usna.edu
RI Wilson, D. Keith/A-4687-2012
OI Wilson, D. Keith/0000-0002-8020-6871
FU U.S. Army Engineer Research and Development Center (ERDC) Geospatial
Research and Engineering business area
FX This research was funded by the U.S. Army Engineer Research and
Development Center (ERDC) Geospatial Research and Engineering business
area. Permission to publish was granted by Director, Cold Regions
Research and Engineering Laboratory. Any opinions expressed in this
paper are those of the authors, and are not to be construed as official
positions of the funding agency or the Department of the Army unless so
designated by other authorized documents.
NR 10
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U1 0
U2 8
PU ACOUSTICAL SOC AMER AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0001-4966
J9 J ACOUST SOC AM
JI J. Acoust. Soc. Am.
PD MAR
PY 2013
VL 133
IS 3
BP EL195
EP EL201
DI 10.1121/1.4790820
PG 7
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 108NP
UT WOS:000316300900008
ER
PT J
AU Hanna, KH
Jeffery, SLA
AF Hanna, K. H.
Jeffery, S. L. A.
TI Radial forearm flaps as durable soft tissue coverage for local nationals
being treated in the field hospital setting
SO JOURNAL OF THE ROYAL ARMY MEDICAL CORPS
LA English
DT Article
AB The current conflict in Afghanistan has seen the increasing use of Improvised Explosive Devices (IED) in insurgency attacks. In addition to the coalition forces killed and injured from these devices, local national civilians are also injured. Injuries often include amputations, open fractures and large areas of skin affected by fragmentation. Local national access to long-term care after an IED injury is limited, and often when the patient leaves a coalition hospital this concludes the care the patient will receive. Definitive, durable treatment options are needed for these patients. In the IED-injured patient with open extremity wounds and open metacarpal fractures, pedicled radial forearm flaps offer a suitable soft tissue coverage option. Four cases are reported on IED-injured Afghan patients treated at a Role 3 hospital facility.
C1 [Hanna, K. H.] USN, Dept Orthopaed Surg, Med Ctr, San Diego, CA 92152 USA.
[Jeffery, S. L. A.] Queen Elizabeth Hosp, Dept Burns & Plast Surg, Royal Ctr Def Med, Birmingham B15 2TH, W Midlands, England.
RP Jeffery, SLA (reprint author), Queen Elizabeth Hosp, Dept Burns & Plast Surg, Royal Ctr Def Med, Mindlesohn Way, Birmingham B15 2TH, W Midlands, England.
EM slajeffery@rcsed.ac.uk
RI Hanna, Khalil/G-9932-2013
NR 4
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U1 1
U2 2
PU RAMC JOURNAL PUBLICATIONS
PI CAMBERELY SURREY
PA HQ AMS, FASC, SLIM RD, CAMBERELY SURREY, GU15 4NP, ENGLAND
SN 0035-8665
J9 J ROY ARMY MED CORPS
JI J. R. Army Med. Corps
PD MAR
PY 2013
VL 159
IS 1
BP 21
EP 23
DI 10.1136/jramc-2013-000010
PG 3
WC Medicine, General & Internal
SC General & Internal Medicine
GA 114XX
UT WOS:000316777400005
ER
PT J
AU Waibel, JS
Wulkan, AJ
Shumaker, PR
AF Waibel, Jill S.
Wulkan, Adam J.
Shumaker, Peter R.
TI Treatment of hypertrophic scars using laser and laser assisted
corticosteroid delivery
SO LASERS IN SURGERY AND MEDICINE
LA English
DT Article
DE drug delivery systems; fractional laser; hypertrophic scar; scar
therapy; triamcinolone acetonide; laser assisted delivery systems
ID PULSED-DYE-LASER; FRACTIONAL LASER; KELOIDS; IMPROVEMENT; PREVENTION;
MANAGEMENT; PRESSURE; BURNS
AB Background and Objectives Hypertrophic scars and contractures are common following various types of trauma and procedures despite skilled surgical and wound care. Following ample time for healing and scar maturation, many millions of patients are burdened with persistent symptoms and functional impairments. Cutaneous scars can be complex and thus the approach to therapy is often multimodal. Intralesional corticosteroids have long been a staple in the treatment of hypertrophic and restrictive scars. Recent advances in laser technology and applications now provide additional options for improvements in function, symptoms, and cosmesis. Fractional ablative lasers create zones of ablation at variable depths of the skin with the subsequent induction of a wound healing and collagen remodeling response. Recent reports suggest these ablative zones may also be used in the immediate post-operative period to enhance delivery of drugs and other substances. We present a case series evaluating the efficacy of a novel combination therapy that incorporates the use of an ablative fractional laser with topically applied triamcinolone acetonide suspension in the immediate post-operative period. Methods This is a prospective case series including 15 consecutive subjects with hypertrophic scars resulting from burns, surgery or traumatic injuries. Subjects were treated according to typical institutional protocol with three to five treatment sessions at 2- to 3-month intervals consisting of fractional ablative laser treatment and immediate post-operative topical application of triamcinolone acetonide suspension at a concentration of 10 or 20mg/ml. Three blinded observers evaluated photographs taken at baseline and six months after the final treatment session. Scores were assigned using a modified Manchester quartile score to evaluate enhancements in dyschromia, hypertrophy, texture, and overall improvement. Limitations Small sample size and lack of a control arm. Results Combination same session laser therapy and immediate post-operative corticosteroid delivery resulted in average overall improvement of 2.73/3.0. Dyschromia showed the least amount of improvement while texture showed the most improvement. Conclusion Combination same-session therapy with ablative fractional laser-assisted delivery of triamcinolone acetonide potentially offers an efficient, safe and effective combination therapy for challenging hypertrophic and restrictive cutaneous scars. Lasers Surg. Med. 45: 135140, 2013. (c) 2013 Wiley Periodicals, Inc.
C1 [Waibel, Jill S.] Miami Dermatol, Laser Inst, Miami, FL 33173 USA.
[Wulkan, Adam J.] Univ Miami, Miller Sch Med, Miami, FL 33136 USA.
[Shumaker, Peter R.] USN, Dept Dermatol, Med Ctr, San Diego, CA 92134 USA.
RP Waibel, JS (reprint author), Miami Dermatol & Laser Inst, 7800 SW 87th Ave, Miami, FL 33173 USA.
NR 23
TC 55
Z9 57
U1 3
U2 38
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0196-8092
J9 LASER SURG MED
JI Lasers Surg. Med.
PD MAR
PY 2013
VL 45
IS 3
BP 135
EP 140
DI 10.1002/lsm.22120
PG 6
WC Dermatology; Surgery
SC Dermatology; Surgery
GA 117OU
UT WOS:000316963800001
PM 23460557
ER
PT J
AU Conlin, AMS
Bukowinski, AT
Sevick, CJ
DeScisciolo, C
Crum-Cianflone, NF
AF Conlin, Ava Marie S.
Bukowinski, Anna T.
Sevick, Carter J.
DeScisciolo, Connie
Crum-Cianflone, Nancy F.
TI Safety of the Pandemic H1N1 Influenza Vaccine Among Pregnant U.S.
Military Women and Their Newborns
SO OBSTETRICS AND GYNECOLOGY
LA English
DT Article; Proceedings Paper
CT Conference on San Diego Epidemiology Research Exchange
CY APR 27, 2012
CL San Diego, CA
ID UNITED-STATES; A H1N1; PROSPECTIVE COHORT; OUTCOMES; SURVEILLANCE;
VIRUS; RISK
AB OBJECTIVES: To assess adverse pregnancy outcomes among active-duty U.S. military women who received pandemic H1N1 vaccine during pregnancy as well as adverse health outcomes among the newborns resulting from these pregnancies.
METHODS: The primary study population was a retrospective cohort of active-duty U.S. military women vaccinated during pregnancy with either the pandemic H1N1 vaccine between October 2009 and June 2010 or with seasonal influenza vaccine between October 2008 and June 2009. Rates of pregnancy loss, preeclampsia or eclampsia, and preterm labor were compared between pandemic H1N1 vaccine-exposed (n = 10,376) and seasonal influenza vaccine-exposed pregnancies (n = 7,560). A secondary study population consisted of newborns resulting from these pregnancies. Rates of preterm birth, birth defects, fetal growth problems, and the male-to-female sex ratio were compared between newborns exposed to pandemic H1N1 vaccine and newborns exposed to seasonal influenza vaccine in utero.
RESULTS: No significant differences were observed in rates of pregnancy loss (6.4% compared with 6.5%), preeclampsia or eclampsia (5.8% compared with 5.2%), or preterm labor (6.5% compared with 6.2%) between pandemic H1N1 vaccine-exposed and seasonal influenza vaccine-exposed pregnancies. Furthermore, no significant differences were observed in rates of preterm birth (6.2% compared with 6.3%), birth defects (2.1% compared with 2.0%), fetal growth problems (2.6% compared with 2.4%), or the male-to-female sex ratio (1.05 compared with 1.07) between newborns exposed in utero to pandemic H1N1 vaccine compared with seasonal influenza vaccine. Rates of all outcomes were lower or similar to overall general population rates. This study had at least 80% power to detect hazard ratios of 1.18-1.21 or odds ratios of 1.10-1.36, depending on outcome prevalence.
CONCLUSION: No adverse pregnancy or newborn health outcomes associated with pandemic H1N1 vaccination during pregnancy were noted among our cohort. These findings should be used to encourage increased vaccine coverage among pregnant women. (Obstet Gynecol 2013;121:511-8) DOI: http://10.1097/AOG.0b013e318280d64e
C1 [Conlin, Ava Marie S.; Bukowinski, Anna T.; Sevick, Carter J.; DeScisciolo, Connie; Crum-Cianflone, Nancy F.] NHRC, Deployment Hlth Res Dept, San Diego, CA 92106 USA.
RP Conlin, AMS (reprint author), NHRC, 140 Sylvester Rd, San Diego, CA 92106 USA.
EM ava.conlin@med.navy.mil
NR 32
TC 24
Z9 24
U1 0
U2 5
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0029-7844
J9 OBSTET GYNECOL
JI Obstet. Gynecol.
PD MAR
PY 2013
VL 121
IS 3
BP 511
EP 518
DI 10.1097/AOG.0b013e318280d64e
PG 8
WC Obstetrics & Gynecology
SC Obstetrics & Gynecology
GA 112QN
UT WOS:000316607600004
PM 23635612
ER
PT J
AU Mahon, RT
Auker, CR
Bradley, SG
Mendelson, A
Hall, AA
AF Mahon, R. T.
Auker, C. R.
Bradley, S. G.
Mendelson, A.
Hall, A. A.
TI The emulsified perfluorocarbon Oxycyte improves spinal cord injury in a
swine model of decompression sickness
SO SPINAL CORD
LA English
DT Article
DE decompression illness; PFC; neurological DCS; diving
ID INTRAVENOUS PERFLUOROCARBON; GAS-BUBBLES; ILLNESS; PROTECTION; EMBOLISM;
RABBITS; DIVERS; OXYGEN; FC-43; MRI
AB Study design: A prospective, animal model for pharmacological intervention of decompression sickness (DCS), including spinal cord (SC) injury.
Background: Signs and symptoms of DCS can include joint pain, skin discoloration, cardiopulmonary congestion and SC injury; severity ranges from trivial to fatal. Non-recompressive therapy for DCS may improve time-to-treatment and therefore impact mortality and morbidity.
Objectives: Oxycyte at 5 cc kg(-1) provides both SC protection and statistically significant survival benefit in a swine model of DCS. The purpose of this study was to test whether a reduced dose of Oxycyte (3 cc kg(-1)) would provide similar benefit.
Setting: Silver Spring, MD, USA
Methods: Male Yorkshire swine (N = 50) underwent a non-linear compression profile to 200 fsw (feet of sea water), which was identical to previous work using the 5cc kg(-1) dose of Oxycyte. After 31 min of bottom time, decompression was initiated at 30 fsw per minute until surface pressure was reached. Following decompression and the onset of DCS, intravenous Oxycyte or saline was administered with concurrent 100% O-2 for 1 h. The primary end point was DCS-induced mortality, with Tarlov score and SC histopathology as secondary end points.
Results: Oxycyte administration of 3 cc kg(-1) following surfacing produced no significant detectable survival benefit. Animals that received Oxycyte, however, had reduced SC lesion area.
Conclusion: Further studies to determine the lowest fully efficacious dose of Oxycyte for the adjunct treatment of DCS are warranted. Spinal Cord (2013) 51, 188-192; doi:10.1038/sc.2012.135; published online 20 November 2012
C1 [Mahon, R. T.; Auker, C. R.; Bradley, S. G.; Mendelson, A.; Hall, A. A.] USN, Med Res Ctr, Undersea Med Dept, Silver Spring, MD 20910 USA.
RP Mahon, RT (reprint author), USN, Med Res Ctr, Undersea Med Dept, 503 Robert Grant Ave, Silver Spring, MD 20910 USA.
EM Richard.Mahon@med.navy.mil
FU Office of Naval Research [603792 N.02914.W050.A0710]
FX The views expressed in this article are those of the author and do not
necessarily reflect the official policy or position of the Department of
Navy, Department of Defense, nor the US Government. This work was funded
by the Office of Naval Research work unit #603792 N.02914.W050.A0710.
The authors are US Government employees and this work was prepared as
part of their official duties. Title 17 U.S.C. provides that copyright
protection is not available for work prepared as a part of official
duties.
NR 21
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Z9 5
U1 2
U2 6
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1362-4393
J9 SPINAL CORD
JI Spinal Cord
PD MAR
PY 2013
VL 51
IS 3
BP 188
EP 192
DI 10.1038/sc.2012.135
PG 5
WC Clinical Neurology; Rehabilitation
SC Neurosciences & Neurology; Rehabilitation
GA 114DO
UT WOS:000316721300005
PM 23165506
ER
PT J
AU Christodoulou, JA
AF Christodoulou, Julie A.
TI Integrated Computational Materials Engineering and Materials Genome
Initiative: Accelerating Materials Innovation
SO ADVANCED MATERIALS & PROCESSES
LA English
DT Article
C1 [Christodoulou, Julie A.] Off Naval Res, Arlington, VA 22203 USA.
RP Christodoulou, JA (reprint author), Off Naval Res, Naval Mat Div Code332, Arlington, VA 22203 USA.
EM julie.christodoulou@navy.mil
NR 7
TC 3
Z9 5
U1 3
U2 23
PU ASM INT
PI MATERIALS PARK
PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002
USA
SN 0882-7958
J9 ADV MATER PROCESS
JI Adv. Mater. Process.
PD MAR
PY 2013
VL 171
IS 3
BP 28
EP 31
PG 4
WC Materials Science, Multidisciplinary
SC Materials Science
GA 106SX
UT WOS:000316166100005
ER
PT J
AU Knobel, DL
Maina, AN
Cutler, SJ
Ogola, E
Feikin, DR
Junghae, M
Halliday, JEB
Richards, AL
Breiman, RF
Cleaveland, S
Njenga, MK
AF Knobel, Darryn L.
Maina, Alice N.
Cutler, Sally J.
Ogola, Eric
Feikin, Daniel R.
Junghae, Muthoni
Halliday, Jo E. B.
Richards, Allen L.
Breiman, Robert F.
Cleaveland, Sarah
Njenga, M. Kariuki
TI Coxiella burnetii in Humans, Domestic Ruminants, and Ticks in Rural
Western Kenya
SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
LA English
DT Article
ID Q-FEVER; MORBIDITY; OUTBREAK; SEROPREVALENCE; SURVEILLANCE; MORTALITY;
HISTORY; DISEASE; CATTLE; HEALTH
AB We conducted serological surveys for Coxiella burnetii in archived sera from patients that visited a rural clinic in western Kenya from 2007 to 2008 and in cattle, sheep, and goats from the same area in 2009. We also conducted serological and polymerase chain reaction-based surveillance for the pathogen in 2009-2010, in human patients with acute lower respiratory illness, in ruminants following parturition, and in ticks collected from ruminants and domestic dogs. Antibodies against C. burnetii were detected in 30.9% (N = 246) of archived patient sera and in 28.3% (N = 463) of cattle, 32.0% (N = 378) of goats, and 18.2% (N = 159) of sheep surveyed. Four of 135 (3%) patients with acute lower respiratory illness showed seroconversion to C. burnetii. The pathogen was detected by polymerase chain reaction in specimens collected from three of six small ruminants that gave birth within the preceding 24 hours, and in five of 10 pools (50%) of Haemaphysalis leachi ticks collected from domestic dogs.
C1 [Knobel, Darryn L.] Univ Pretoria, Fac Vet Sci, Dept Vet Trop Dis, ZA-0110 Onderstepoort, South Africa.
[Maina, Alice N.; Richards, Allen L.] USN, Med Res Ctr, Viral & Rickettsial Dis Dept, Silver Spring, MD USA.
[Cutler, Sally J.] Univ E London, Sch Hlth Sports & Biosci, London E15 4LZ, England.
[Feikin, Daniel R.] Johns Hopkins Bloomberg Sch Publ Hlth, Baltimore, MD USA.
[Feikin, Daniel R.] Ctr Dis Control & Prevent, Baltimore, MD USA.
[Halliday, Jo E. B.; Cleaveland, Sarah] Univ Glasgow, Coll Med Vet & Life Sci, Inst Biodivers Anim Hlth & Comparat Med, Glasgow G12 8QQ, Lanark, Scotland.
RP Knobel, DL (reprint author), Univ Pretoria, Fac Vet Sci, Dept Vet Trop Dis, ZA-0110 Onderstepoort, South Africa.
EM darryn.knobel@up.ac.za; alicemaina727@gmail.com; S.Cutler@uel.ac.uk;
EOgola@kemricdc.org; dfeikin@jhsph.edu; mjunghae@ke.cdc.gov;
jo.halliday@glasgow.ac.uk; allen.richards@med.navy.mil;
rbreiman@ke.cdc.gov; sarah.cleaveland@glasgow.ac.uk; knjenga@ke.cdc.gov
RI Valle, Ruben/A-7512-2013;
OI Halliday, Jo/0000-0002-1329-9035
FU Wellcome Trust, UK [081828/B/06/Z]; U.S. Centers of Disease Control and
Prevention and Global Emerging Infections Surveillance and Response
System Program [188M.0931.001.A0074]
FX This research was supported by the Wellcome Trust, UK (grant no.
081828/B/06/Z) and U.S. Centers of Disease Control and Prevention and
Global Emerging Infections Surveillance and Response System Program
(work unit no. 188M.0931.001.A0074).
NR 32
TC 16
Z9 16
U1 0
U2 14
PU AMER SOC TROP MED & HYGIENE
PI MCLEAN
PA 8000 WESTPARK DR, STE 130, MCLEAN, VA 22101 USA
SN 0002-9637
J9 AM J TROP MED HYG
JI Am. J. Trop. Med. Hyg.
PD MAR
PY 2013
VL 88
IS 3
BP 513
EP 518
DI 10.4269/ajtmh.12-0169
PG 6
WC Public, Environmental & Occupational Health; Tropical Medicine
SC Public, Environmental & Occupational Health; Tropical Medicine
GA 106QC
UT WOS:000316158800020
PM 23382156
ER
PT J
AU Petryayeva, E
Algar, WR
Medintz, IL
AF Petryayeva, Eleonora
Algar, W. Russ
Medintz, Igor L.
TI Quantum Dots in Bioanalysis: A Review of Applications Across Various
Platforms for Fluorescence Spectroscopy and Imaging
SO APPLIED SPECTROSCOPY
LA English
DT Review
DE Quantum dot; Fluorescence; Spectroscopy; Assay; Imaging; Microscopy;
Flow cytometry; Single molecule; Forster resonance energy transfer
(FRET); Multiplexing
ID RESONANCE ENERGY-TRANSFER; PHOTOINDUCED ELECTRON-TRANSFER; COLLOIDAL
SEMICONDUCTOR NANOCRYSTALS; CROSS-CORRELATION SPECTROSCOPY;
PLASMON-COUPLED EMISSION; LIGAND-RECEPTOR BINDING; IN-VIVO;
ELECTROGENERATED CHEMILUMINESCENCE; CDSE NANOCRYSTALS; ENHANCED
ELECTROCHEMILUMINESCENCE
AB Semiconductor quantum dots (QDs) are brightly luminescent nanoparticles that have found numerous applications in bioanalysis and bioimaging. In this review, we highlight recent developments in these areas in the context of specific methods for fluorescence spectroscopy and imaging. Following a primer on the structure, properties, and biofunctionalization of QDs, we describe Select examples of how QDs have been used in combination with steady-state or time-resolved spectroscopic techniques to develop a variety of assays, bioprobes, and biosensors that function via changes in QD photoluminescence intensity, polarization, or lifetime. Some special attention is paid to the use of Forster resonance energy transfer type methods in bioanalysis, including those based on bioluminescence and chemiluminescence. Direct chemiluminescence, electro-chemiluminescence, and charge transfer quenching are similarly discussed. We further describe the combination of QDs and flow cytometry, including traditional cellular analyses and spectrally encoded barcode-based assay technologies, before turning our attention to enhanced fluorescence techniques based on photonic crystals or plasmon coupling. Finally, we survey the use of QDs across different platforms for biological fluorescence imaging, including epilluorescence, confocal, and two. photon excitation microscopy; single particle tracking and fluorescence correlation spectroscopy; super-resolution imaging; near-field scanning optical microscopy; and fluorescence lifetime imaging microscopy. In each of the above-mentioned platforms, QDs provide the brightness needed for highly sensitive detection, the photostability needed for tracking dynamic processes, or the multiplexing capacity needed to elucidate complex systems. There is a clear synergy between advances in QD materials and spectroscopy and imaging techniques, as both must be applied in concert to achieve their full potential.
C1 [Petryayeva, Eleonora; Algar, W. Russ] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada.
[Medintz, Igor L.] USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
RP Algar, WR (reprint author), Univ British Columbia, Dept Chem, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
EM algar@chem.ubc.ca
OI Petryayeva, Eleonora/0000-0001-9330-0499
FU Natural Sciences and Engineering Research Council of Canada; University
of British Columbia
FX Eleonora Petryayeva is grateful to the Natural Sciences and Engineering
Research Council of Canada for support through a postgraduate
fellowship. W. Russ Algar and Eleonora Petryayeva acknowledge the
University of British Columbia for financial support of this research.
Igor L. Medintz acknowledges the Office of Naval Research, the Naval
Research Laboratory (NRL), the NRL Nanosciences Institute, the Defense
Advanced Research Projects Agency, and the Defense Threat Reduction
Agency Joint Science and Technological Office (DTRA-JSTO) Military
Interdepartmental Purchase Requisition B112582M.
NR 299
TC 159
Z9 164
U1 31
U2 550
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0003-7028
EI 1943-3530
J9 APPL SPECTROSC
JI Appl. Spectrosc.
PD MAR
PY 2013
VL 67
IS 3
BP 215
EP 252
DI 10.1366/12-06948
PG 38
WC Instruments & Instrumentation; Spectroscopy
SC Instruments & Instrumentation; Spectroscopy
GA 102GR
UT WOS:000315833400001
PM 23452487
ER
PT J
AU Meylemans, HA
Harvey, BG
Reams, JT
Guenthner, AJ
Cambrea, LR
Groshens, TJ
Baldwin, LC
Garrison, MD
Mabry, JM
AF Meylemans, Heather A.
Harvey, Benjamin G.
Reams, Josiah T.
Guenthner, Andrew J.
Cambrea, Lee R.
Groshens, Thomas J.
Baldwin, Lawrence C.
Garrison, Michael D.
Mabry, Joseph M.
TI Synthesis, Characterization, and Cure Chemistry of Renewable
Bis(cyanate) Esters Derived from 2-Methoxy-4-Methylphenol
SO BIOMACROMOLECULES
LA English
DT Article
ID EPOXY-RESINS; PHENOL-FORMALDEHYDE; TRICYANATE ESTER; LIGNIN; POLYMERS;
POLYURETHANES; POLYESTERS; RESOURCES; KINETICS
AB A series of renewable bis(cyanate) esters have been prepared from bisphenols synthesized by condensation of 2-methoxy-4-methylphenol (creosol) with formaldehyde, acetaldehyde, and propionaldehyde. The cyanate esters have been fully characterized by infrared spectroscopy, H-1 and C-13 NMR spectroscopy, and single crystal X-ray diffraction. These compounds melt from 88 to 143 degrees C, while cured resins have glass transition temperatures from 219 to 248 degrees C, water uptake (96 h, 85 degrees C immersion) in the range of 2.05-3.21%, and wet glass transition temperatures from 174 to 193 degrees C. These properties suggest that creosol-derived cyanate esters may be useful for a wide variety of military and commercial applications. The cure chemistry of the cyanate esters has been studied with FTIR spectroscopy and differential scanning calorimetry. The results show that cyanate esters with more sterically demanding bridging groups cure more slowly, but also more completely than those with a bridging methylene group. In addition to the structural differences, the purity of the cyanate esters has a significant effect on both the cure chemistry and final T-g of the materials. In some cases, post-cure of the resins at 350 degrees C resulted in significant decomposition and off-gassing, but cure protocols that terminated at 250-300 degrees C generated void-free resin pucks without degradation. Thermogravimetric analysis revealed that cured resins were stable up to 400 degrees C and then rapidly degraded. TGA/FTIR and mass spectrometry results showed that the resins decomposed to phenols, isocyanic acid, and secondary decomposition products, including CO2. Char yields of cured resins under N-2 ranged from 27 to 35%, while char yields in air ranged from 8 to 11%. These data suggest that resins of this type may potentially be recycled to parent phenols, creosol, and other alkylated creosols by pyrolysis in the presence of excess water vapor. The ability to synthesize these high temperature resins from a phenol (creosol) that can be derived from lignin, coupled with the potential to recycle the composites, provides a possible route to the production of sustainable, high-performance, thermosetting resins with reduced environmental impact.
C1 [Meylemans, Heather A.; Harvey, Benjamin G.; Cambrea, Lee R.; Groshens, Thomas J.; Baldwin, Lawrence C.; Garrison, Michael D.] USN, Res Dept, Div Chem, NAWCWD, China Lake, CA 93555 USA.
[Reams, Josiah T.; Guenthner, Andrew J.; Mabry, Joseph M.] USAF, Res Lab, Aerosp Syst Directorate, Edwards AFB, CA 93524 USA.
RP Harvey, BG (reprint author), USN, Res Dept, Div Chem, NAWCWD, China Lake, CA 93555 USA.
EM benjamin.g.harvey@navy.mil
FU Strategic Environmental Research and Development Program (SERDP)
[WP-2214]
FX The authors would like to thank Ms. Roxanne Quintana for MS analysis and
the Strategic Environmental Research and Development Program (SERDP)
Project WP-2214 for financial support of this work.
NR 43
TC 28
Z9 28
U1 4
U2 71
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1525-7797
EI 1526-4602
J9 BIOMACROMOLECULES
JI Biomacromolecules
PD MAR
PY 2013
VL 14
IS 3
BP 771
EP 780
DI 10.1021/bm3018438
PG 10
WC Biochemistry & Molecular Biology; Chemistry, Organic; Polymer Science
SC Biochemistry & Molecular Biology; Chemistry; Polymer Science
GA 105DB
UT WOS:000316044700022
PM 23323677
ER
PT J
AU Ali, A
Madan, H
Barth, MJ
Boos, JB
Bennett, BR
Datta, S
AF Ali, Ashkar
Madan, Himanshu
Barth, Michael J.
Boos, J. Brad
Bennett, Brian R.
Datta, Suman
TI Effect of Interface States on the Performance of Antimonide nMOSFETs
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE Antimonide MOSFET; high-kappa dielectric; InAsSb; interface states
AB Antimonide (Sb) quantum-well MOSFETs are demonstrated with an integrated high-kappa dielectric (1-nm Al2O3/10-nm HfO2). The effect of interface trap density D-it on the dc drive current and transconductance g(m) is studied in detail using split C-V/G-V, pulsed I-V, and radio-frequency measurements. Pulsed I-V measurements show improved ON current, transconductance, and subthreshold slope due to reduced charge trapping in the dielectric at high frequencies. The long-channel Sb nMOSFET exhibits effective electron mobility of 6000 cm(2)/V . s at high field (2 x 10(12) /cm(2) of charge density N-s), which is 15x higher than Si NMOS inversion layer mobility, and one of the highest values reported for III-V MOSFETs. The short-channel Sb nMOSFET (L-G = 150 nm) exhibits a cutoff frequency f(T) of 120 GHz, an f(T) x L-G product of 18 GHz . mu m, land a source-side injection velocity v(eff) of 2.7 x 10(7) cm/s at a drain bias V-DS of 0.75 V and a gate overdrive of 0.6 V.
C1 [Ali, Ashkar; Madan, Himanshu; Barth, Michael J.; Datta, Suman] Penn State Univ, University Pk, PA 16802 USA.
[Boos, J. Brad; Bennett, Brian R.] USN, Res Lab, Washington, DC 20375 USA.
RP Ali, A (reprint author), Intel Corp, Hillsboro, OR 97124 USA.
EM AshkarAli@psualum.com
RI Bennett, Brian/A-8850-2008
OI Bennett, Brian/0000-0002-2437-4213
FU Focus Center Research Program for Materials, Structures, and Devices;
Semiconductor Research Corporation; Defense Advanced Research Projects
Agency; Office of Naval Research
FX Manuscript received December 4, 2012; accepted December 21, 2012. Date
of publication January 14, 2013; date of current version February 20,
2013. This work was supported by the Focus Center Research Program for
Materials, Structures, and Devices sponsored by the Semiconductor
Research Corporation and the Defense Advanced Research Projects Agency,
and the Office of Naval Research. The review of this letter was arranged
by Editor G. (GE) Meneghesso.
NR 9
TC 8
Z9 8
U1 0
U2 34
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0741-3106
J9 IEEE ELECTR DEVICE L
JI IEEE Electron Device Lett.
PD MAR
PY 2013
VL 34
IS 3
BP 360
EP 362
DI 10.1109/LED.2012.2236881
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA 100SP
UT WOS:000315723000010
ER
PT J
AU Moon, JS
Seo, HC
Antcliffe, M
Le, D
McGuire, C
Schmitz, A
Nyakiti, LO
Gaskill, DK
Campbell, PM
Lee, KM
Asbeck, P
AF Moon, J. S.
Seo, H-C.
Antcliffe, M.
Le, D.
McGuire, C.
Schmitz, A.
Nyakiti, L. O.
Gaskill, D. K.
Campbell, P. M.
Lee, K-M.
Asbeck, P.
TI Graphene FETs for Zero-Bias Linear Resistive FET Mixers
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE FET; f(MAX); f(T); graphene; linearity; mixer
ID RF; TECHNOLOGY
AB In this letter, we present the first graphene FET operation for zero-bias resistive FET mixers, utilizing modulation of graphene channel resistance rather than ambipolar mixer operations, up to 20 GHz. The graphene FETs with a gate length of 0.25 mu m have an extrinsic cutoff frequency f(T) of 40 GHz and a maximum oscillation frequency f(MAX) of 37 GHz. At 2 GHz, the graphene FETs show a conversion loss of 14 dB with gate-pumped resistive FET mixing, with at least > 10-dB improvement over reported graphene mixers. The input third-order intercept points (IIP3s) of 27 dBm are demonstrated at a local oscillator (LO) power of 2.6 dBm. The excellent linearity demonstrated by graphene FETs at low LO power offers the potential for high-quality linear mixers.
C1 [Moon, J. S.; Seo, H-C.; Antcliffe, M.; Le, D.; McGuire, C.; Schmitz, A.] HRL Labs LLC, Malibu, CA 90265 USA.
[Nyakiti, L. O.; Gaskill, D. K.; Campbell, P. M.] USN, Res Lab, Washington, DC 20375 USA.
[Lee, K-M.; Asbeck, P.] Univ Calif San Diego, San Diego, CA 92093 USA.
RP Moon, JS (reprint author), HRL Labs LLC, Malibu, CA 90265 USA.
EM jmoon@hrl.com
FU Defense Advanced Research Projects Agency (DARPA) [N66001-08-C-2048]
FX This work was supported by the Defense Advanced Research Projects Agency
(DARPA) and monitored by Dr. J. Albrecht at DARPA under SPAWAR Contract
N66001-08-C-2048. The views, opinions, and/or findings contained in this
letter/presentation are those of the author/presenter and should not be
interpreted as representing the official views or policies, either
expressed or implied, of the Defense Advanced Research Projects Agency
or the Department of Defense. The review of this letter was arranged by
Editor Z. Chen.
NR 18
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U1 0
U2 45
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 MAR
PY 2013
VL 34
IS 3
BP 465
EP 467
DI 10.1109/LED.2012.2236533
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA 100SP
UT WOS:000315723000045
ER
PT J
AU Yoon, W
Smith, AR
Foos, EE
Boercker, JE
Heuer, WB
Tischler, JG
AF Yoon, Woojun
Smith, Anthony R.
Foos, Edward E.
Boercker, Janice E.
Heuer, William B.
Tischler, Joseph G.
TI Electrical Measurement Under Atmospheric Conditions of PbSe Nanocrystal
Thin Films Passivated by Remote Plasma Atomic Layer Deposition of Al2O3
SO IEEE TRANSACTIONS ON NANOTECHNOLOGY
LA English
DT Article
DE Carrier transport; nanocrystal; PbSe; remote plasma atomic layer
deposition (ALD); thin-film transistor (TFT)
ID MULTIPLE EXCITON GENERATION; QUANTUM-DOT SOLIDS; PHOTODETECTORS;
TRANSISTORS; EMISSION
AB PbSe nanocrystal thin-film transistors (TFTs) were passivated using remote plasma atomic layer deposition (ALD) of a similar to 10 nm thick Al2O3 film at 150 degrees C. By using a highly reactive remote oxygen plasma source, the time for one complete ALD cycle was about 15 s with growth rates of similar to 1.1 angstrom/cycle. The effective mobilities measured under atmospheric condition from Al2O3-passivated PbSe nanocrystal TFTs were comparable to the values reported previously for air-free PbSe nanocrystal TFTs, demonstrating that ALD Al2O3 layers prevent oxidation and degradation of nanocrystal films from air exposure. The variation in the effective mobility of passivated devices was also found to be negligible under ambient conditions over a period of 30 days. The results show that remote plasma ALD processing of Al2O3 is capable of producing an effective passivation layer on air-sensitive nanocrystals with high deposition rates at reduced temperature.
C1 [Yoon, Woojun; Smith, Anthony R.; Foos, Edward E.; Boercker, Janice E.; Tischler, Joseph G.] USN, Res Lab, Washington, DC 20375 USA.
[Heuer, William B.] USN Acad, Annapolis, MD 21401 USA.
RP Yoon, W (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM woojun.yoon@ieee.org
RI Yoon, Woojun/H-9734-2013
OI Yoon, Woojun/0000-0002-1946-5372
FU National Research Council Research Associateship Award at the U.S. Naval
Research Laboratory
FX Manuscript received July 13, 2012; revised October 29, 2012; accepted
December 11, 2012. Date of publication December 21, 2012; date of
current version March 6, 2013. The work of W. Yoon and A. R. Smith was
supported by a National Research Council Research Associateship Award at
the U.S. Naval Research Laboratory. The review of this paper was
arranged by Associate Editor J. Li.
NR 28
TC 1
Z9 1
U1 1
U2 38
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1536-125X
J9 IEEE T NANOTECHNOL
JI IEEE Trans. Nanotechnol.
PD MAR
PY 2013
VL 12
IS 2
BP 146
EP 151
DI 10.1109/TNANO.2012.2234761
PG 6
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Materials Science, Multidisciplinary; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Materials Science;
Physics
GA 107FT
UT WOS:000316201000006
ER
PT J
AU Maue, AC
Mohawk, KL
Giles, DK
Poly, F
Ewing, CP
Jiao, YN
Lee, G
Ma, ZC
Monteiro, MA
Hill, CL
Ferderber, JS
Porter, CK
Trent, MS
Guerry, P
AF Maue, Alexander C.
Mohawk, Krystle L.
Giles, David K.
Poly, Frederic
Ewing, Cheryl P.
Jiao, Yuening
Lee, Ginyoung
Ma, Zuchao
Monteiro, Mario A.
Hill, Christina L.
Ferderber, Jason S.
Porter, Chad K.
Trent, M. Stephen
Guerry, Patricia
TI The Polysaccharide Capsule of Campylobacter jejuni Modulates the Host
Immune Response
SO INFECTION AND IMMUNITY
LA English
DT Article
ID ENTERICA SEROTYPE TYPHI; FETUS SUBSP-JEJUNI; BACTERIAL PATHOGENS;
NEISSERIA-MENINGITIDIS; INTESTINAL-MUCOSA; PHASE VARIATION; TH17 CELLS;
LIPOOLIGOSACCHARIDE; INFECTION; MICE
AB Campylobacter jejuni is a major cause of bacterial diarrheal disease worldwide. The organism is characterized by a diversity of polysaccharide structures, including a polysaccharide capsule. Most C. jejuni capsules are known to be decorated nonstoichio-metrically with methyl phosphoramidate (MeOPN). The capsule of C. jejuni 81-176 has been shown to be required for serum resistance, but here we show that an encapsulated mutant lacking the MeOPN modification, an mpnC mutant, was equally as sensitive to serum killing as the nonencapsulated mutant. A nonencapsulated mutant, a kpsM mutant, exhibited significantly reduced colonization compared to that of wild-type 81-176 in a mouse intestinal colonization model, and the mpnC mutant showed an intermediate level of colonization. Both mutants were associated with higher levels of interleukin 17 (IL-17) expression from lamina propria CD4(+) cells than from cells from animals infected with 81-176. In addition, reduced levels of Toll-like receptor 4 (TLR4) and TLR2 activation were observed following in vitro stimulation of human reporter cell lines with the kpsM and mpnC mutants compared to those with wild-type 81-176. The data suggest that the capsule polysaccharide of C. jejuni and the MeOPN modification modulate the host immune response.
C1 [Maue, Alexander C.; Mohawk, Krystle L.; Poly, Frederic; Ewing, Cheryl P.; Hill, Christina L.; Ferderber, Jason S.; Porter, Chad K.; Guerry, Patricia] USN, Enter Dis Dept, Med Res Ctr, Silver Spring, MD USA.
[Giles, David K.] Univ Tennessee, Dept Biol & Environm Sci, Chattagnooga, TN USA.
[Jiao, Yuening; Lee, Ginyoung; Ma, Zuchao; Monteiro, Mario A.] Univ Guelph, Dept Chem, Guelph, ON N1G 2W1, Canada.
[Trent, M. Stephen] Univ Texas Austin, Sect Mol Genet & Microbiol, Austin, TX 78712 USA.
RP Guerry, P (reprint author), USN, Enter Dis Dept, Med Res Ctr, Silver Spring, MD USA.
EM patricia.guerry@med.navy.mil
FU NIAID [R56 AI080593, AI064184, AI76322]; Navy Work Unit
[6000.RAD1.DA3.A0308]; ARO [61789-MA-MUR]; NSERC
FX Work at NMRC was funded by NIAID R56 AI080593 (to P.G.) and Navy Work
Unit 6000.RAD1.DA3.A0308. Work at UT Austin was funded by NIAID grants
AI064184 and AI76322 and ARO grant 61789-MA-MUR (to M.S.T.). Work at the
University of Guelph was funded by NSERC.
NR 58
TC 19
Z9 19
U1 0
U2 15
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0019-9567
J9 INFECT IMMUN
JI Infect. Immun.
PD MAR
PY 2013
VL 81
IS 3
BP 665
EP 672
DI 10.1128/IAI.01008
PG 8
WC Immunology; Infectious Diseases
SC Immunology; Infectious Diseases
GA 108RH
UT WOS:000316313200007
PM 23250948
ER
PT J
AU Gordon, BR
Hurst, DS
Fornadley, JA
Hunsaker, DH
AF Gordon, Bruce R.
Hurst, David S.
Fornadley, John A.
Hunsaker, Darrell H.
TI Safety of intradermal skin tests for inhalants and foods: a prospective
study
SO INTERNATIONAL FORUM OF ALLERGY & RHINOLOGY
LA English
DT Article
DE intradermal skin tests; skin test safety; anaphylaxis; non-IgE-mediated
food allergy; food allergy; inhalant allergy; subcutaneous immunotherapy
ID SYSTEMIC REACTIONS; PREDICTING RESPONSE; NASAL PROVOCATION;
ADVERSE-REACTIONS; AMERICAN-ACADEMY; DOUBLE-BLIND; ALLERGY;
IMMUNOTHERAPY; PRICK; AEROALLERGENS
AB Background Intradermal skin testing is a useful allergy diagnostic tool. Although considered safe when properly performed, systemic reactions have been reported. This is the first large, prospective study to record and evaluate all systemic reactions from intradermal skin testing (IDT) to inhalant or food antigens. Methods A 24-month prospective study by 40 physician practices, recording all IDT tests, including reactions, symptoms, severity, time after injection, and reaction treatments. Results Eighty systemic reactions (22 major) occurred among 20,530 patients (878,583 wheals). Nine had epinephrine treatment, 4 were observed in an emergency department, and there were no hospitalizations or fatalities. The overall systemic reaction risk was 0.009%. The risk of having a major reaction was 0.003%, or 1 reaction per 933 patients. Conclusion Intradermal skin tests for inhalants or foods, when performed with appropriate precautions, have a safety profile comparable to skin prick tests.
C1 [Gordon, Bruce R.] Cape Cod Hosp, Dept Otolaryngol, Hyannis, MA USA.
[Gordon, Bruce R.] Harvard Univ, Dept Laryngol & Otol, Cambridge, MA 02138 USA.
[Gordon, Bruce R.] Massachusetts Eye & Ear Infirm, Boston, MA 02114 USA.
[Hurst, David S.] Tufts Univ, Dept Otolaryngol, Boston, MA 02111 USA.
[Fornadley, John A.] Penn State Univ, Dept Surg, Hershey, PA USA.
[Hunsaker, Darrell H.] USN, Dept Otolaryngol, Med Ctr, San Diego, CA 92152 USA.
RP Gordon, BR (reprint author), Cape Cod ENT, 65 Cedar St, Hyannis, MA 02601 USA.
EM docbruce@comcast.net
FU American Academy of Otolaryngic Allergy Foundation
FX Funding sources for the study: American Academy of Otolaryngic Allergy
Foundation.
NR 34
TC 4
Z9 4
U1 0
U2 9
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 2042-6976
J9 INT FORUM ALLERGY RH
JI Int. Forum Allergy Rhinol.
PD MAR
PY 2013
VL 3
IS 3
BP 171
EP 176
DI 10.1002/alr.21091
PG 6
WC Otorhinolaryngology
SC Otorhinolaryngology
GA 108BE
UT WOS:000316265000002
PM 23044726
ER
PT J
AU Deschamps, JR
Saavedra, JE
Cao, Z
Keefer, LK
Chakrapani, H
AF Deschamps, Jeffrey R.
Saavedra, Joseph E.
Cao, Zhao
Keefer, Larry K.
Chakrapani, Harinath
TI Stereochemical Origins of Chromophore Extension in O-2-Substituted
Diazeniumdiolates, Prodrugs of Nitric Oxide
SO JOURNAL OF CHEMICAL CRYSTALLOGRAPHY
LA English
DT Article
DE Nitric oxide; Diazeniumdiolate; Crystallography; Ultraviolet
spectrophotometry
ID IN-VITRO; CHEMISTRY; RELEASE; FAMILY; IONS; NO
AB Ultraviolet spectral data for nitric oxide prodrugs of structure R2NN(O)=NOR' tend to fall into two classes: those in which R2N is pyrrolidinyl have lambda(max) near 255 nm when R' is a simple alkyl substituent, while those in which R2N is not pyrrolidinyl display lambda(max) around 230 nm. To test the hypothesis that this spectral difference might reflect an electronic interaction large enough to affect key bond lengths and the configuration at the R2N nitrogen, we have compared the crystal structures of two compounds in which R' was beta-d-glucopyranosyl tetraacetate and R2N was pyrrolidinyl versus diethylamino. The X-ray studies revealed a pyramidyl R2N nitrogen for the diethylamino derivative while the pyrrolidine derivative's R2N approached planarity, consistent with substantial electronic interaction between the N(O)=NOR' chromophore and pyrrolidine's (but not diethylamine's) nitrogen atom. Compensatory changes in key bond lengths were also seen. These findings indicate that overlap between the pyrrolidine nitrogen's p orbital and the N(O)=NOR' chromophore can be an important determinant of structure and electron distribution in the diazeniumdiolate series.
Ultraviolet spectral data for nitric oxide prodrugs of structure R2NN(O)=NOR' tend to fall into two classes and the wavelength of the ultraviolet absorbance maximum is a convenient and rather sensitive indicator of the tetrahedral versus planar steric arrangement at the R2N3 nitrogen.
C1 [Deschamps, Jeffrey R.] USN, Ctr Biomol Sci & Engn, Res Lab, Washington, DC 20375 USA.
[Saavedra, Joseph E.; Cao, Zhao] NCI, Basic Sci Program, SAIC Frederick, Frederick, MD 21702 USA.
[Keefer, Larry K.] NCI, Biol Chem Lab, Frederick, MD 21702 USA.
[Chakrapani, Harinath] Indian Inst Sci Educ & Res, Pune 411008, Maharashtra, India.
RP Deschamps, JR (reprint author), USN, Ctr Biomol Sci & Engn, Res Lab, Code 6930,4555 Overlook Ave, Washington, DC 20375 USA.
EM deschamps@nrl.navy.mil
RI G, Neela/H-3016-2014; Keefer, Larry/N-3247-2014;
OI Keefer, Larry/0000-0001-7489-9555; Deschamps,
Jeffrey/0000-0001-5845-0010
FU National Institute on Drug Abuse (NIDA) [Y1-DA1101]; Naval Research
Laboratory; Intramural Research Program of the NIH, National Cancer
Institute, Center for Cancer Research; National Cancer Institute
[HHSN261200800001E]
FX Crystallographic studies presented in the paper were supported in part
by the National Institute on Drug Abuse (NIDA) under contract Y1-DA1101
and by the Naval Research Laboratory. Support was also provided by the
Intramural Research Program of the NIH, National Cancer Institute,
Center for Cancer Research, and with federal funds from the National
Cancer Institute under Contract HHSN261200800001E.
NR 12
TC 0
Z9 0
U1 0
U2 4
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1074-1542
J9 J CHEM CRYSTALLOGR
JI J. Chem. Crystallogr.
PD MAR
PY 2013
VL 43
IS 3
BP 123
EP 126
DI 10.1007/s10870-013-0394-1
PG 4
WC Crystallography; Spectroscopy
SC Crystallography; Spectroscopy
GA 108KW
UT WOS:000316292900002
ER
PT J
AU Xargay, E
Kaminer, I
Pascoal, A
Hovakimyan, N
Dobrokhodov, V
Cichella, V
Aguiar, AP
Ghabcheloo, R
AF Xargay, E.
Kaminer, I.
Pascoal, A.
Hovakimyan, N.
Dobrokhodov, V.
Cichella, V.
Aguiar, A. P.
Ghabcheloo, R.
TI Time-Critical Cooperative Path Following of Multiple Unmanned Aerial
Vehicles over Time-Varying Networks
SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
LA English
DT Article
ID RECEDING HORIZON CONTROL; AUTONOMOUS VEHICLES; NONLINEAR-SYSTEMS; MARINE
CRAFT; COORDINATION; CONSENSUS; GRAPHS; SYNCHRONIZATION; OPTIMIZATION;
CONVERGENCE
AB This paper addresses the problem of steering a fleet of unmanned aerial vehicles along desired three-dimensional paths while meeting stringent spatial and temporal constraints. A representative example is the challenging mission scenario where the unmanned aerial vehicles are tasked to cooperatively execute collision-free maneuvers and arrive at their final destinations at the same time. In the proposed framework, the unmanned aerial vehicles are assigned nominal spatial paths and speed profiles along those, and then the vehicles are requested to execute cooperative path following, rather than open loop trajectory tracking maneuvers. This strategy yields robust behavior against external disturbances by allowing the unmanned aerial vehicles to negotiate their speeds along the paths in response to information exchanged over the supporting communications network. The paper considers the case where the graph that captures the underlying time-varying communications topology is disconnected during some interval of time or even fails to be connected at all times. Conditions are given under which the cooperative path-following closed-loop system is stable. Flight test results of a coordinated road-search mission demonstrate the efficacy of the multi-vehicle cooperative control framework developed in the paper.
C1 [Xargay, E.] Univ Illinois, Dept Aerosp Engn, Urbana, IL 61801 USA.
[Kaminer, I.; Dobrokhodov, V.; Cichella, V.] USN, Postgrad Sch, Dept Mech & Astronaut Engn, Monterey, CA 93943 USA.
[Pascoal, A.; Aguiar, A. P.] Inst Super Tecn, Lab Robot & Syst Engn & Sci, P-1049 Lisbon, Portugal.
[Hovakimyan, N.] Univ Illinois, Dept Mech Sci & Engn, Urbana, IL 61801 USA.
[Ghabcheloo, R.] Tampere Univ Technol, Dept Intelligent Hydraul & Automat, Tampere 33720, Finland.
RP Xargay, E (reprint author), Univ Illinois, Dept Aerosp Engn, Urbana, IL 61801 USA.
EM xargay@illinois.edu; kaminer@nps.edu; antonio@isr.ist.utl.pt;
nhovakim@illinois.edu; vldobr@nps.edu; venanzio.cichella@gmail.com;
pedro@isr.ist.utl.pt; reza.ghabcheloo@tut.fi
RI Aguiar, A. Pedro/L-4305-2014;
OI Aguiar, A. Pedro/0000-0001-7105-0505; PASCOAL, ANTONIO
/0000-0002-0657-6671; Ghabcheloo, Reza/0000-0002-6043-4236
FU United States Special Operations Command; Office of Naval Research; Air
Force Office of Scientific Research; Army Research Office; European
Commission; Fundacao para a Ciencia e a Tecnologia
FX This research is supported in part by United States Special Operations
Command, Office of Naval Research, Air Force Office of Scientific
Research, Army Research Office, European Commission FP7 MORPH Project,
and Fundacao para a Ciencia e a Tecnologia.
NR 59
TC 19
Z9 19
U1 4
U2 33
PU AMER INST AERONAUTICS ASTRONAUTICS
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0731-5090
EI 1533-3884
J9 J GUID CONTROL DYNAM
JI J. Guid. Control Dyn.
PD MAR-APR
PY 2013
VL 36
IS 2
BP 499
EP 516
DI 10.2514/1.56538
PG 18
WC Engineering, Aerospace; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 102GF
UT WOS:000315832200013
ER
PT J
AU Sarobol, P
Chen, WH
Pedigo, AE
Su, P
Blendell, JE
Handwerker, CA
AF Sarobol, Pylin
Chen, Wei-Hsun
Pedigo, Aaron E.
Su, Peng
Blendell, John E.
Handwerker, Carol A.
TI Effects of local grain misorientation and beta-Sn elastic anisotropy on
whisker and hillock formation
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID TIN WHISKERS; THIN-FILMS; TEXTURE; GROWTH; CU; ELECTRODEPOSITS;
DIFFRACTION; MECHANISM
AB A whisker and hillock growth model based on local film microstructure, grain misorientation, and elastic strain energy density (ESED) as the driving force for growth was developed to predict preferred sites for growth. Local grain orientations and strains measured by synchrotron microdiffraction in nine regions containing whiskers or hillocks were compared with elastic finite element analysis simulations including Sn elastic anisotropy. Whisker and hillock grains were observed to have higher crystallographic misorientations with neighboring grains than generally observed in the microstructure. While elastic simulations predicted higher local out-of-plane elastic strains and ESEDs at those locations with high misorientations before growth, synchrotron measurements of out-of-plane strains of whisker and hillock grains after growth showed relaxation, with correspondingly low ESEDs calculated from measured strains. Hence, highly localized out-of-plane elastic strains and ESEDs of grains with high relative misorientations with their neighbors determined, at least in part, which grains became whiskers or hillocks.
C1 [Sarobol, Pylin; Chen, Wei-Hsun; Blendell, John E.; Handwerker, Carol A.] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA.
[Pedigo, Aaron E.] USN, Ctr Surface Warfare, Crane Div, Crane, IN 47522 USA.
[Su, Peng] Cisco Syst Inc, Component Qual & Technol, San Jose, CA 95134 USA.
RP Sarobol, P (reprint author), Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA.
EM psarobol@purdue.edu
OI Chen, Wei-Hsun/0000-0002-3761-1038
FU NSF Graduate Research Fellowship Program; Cisco Systems, Inc.; Naval
Surface Warfare Center (Crane Division); DOE-BES [DE-FG02-05ER15637];
NSF [EAR-0337006, 0416243]; Office of Science, Office of Basic Energy
Sciences, Materials Science Division, of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was supported by NSF Graduate Research Fellowship Program,
Cisco Systems, Inc., and Naval Surface Warfare Center (Crane Division).
The authors would like to thank Martin Kunz, Nobumichi Tamura, Kai Chen,
Benjamin Anglin, and Anthony Rollett for assistance with data extraction
and valuable discussions. We acknowledge support from DOE-BES (Grant No.
DE-FG02-05ER15637) and NSF (Grant No. EAR-0337006) and access to ALS
beamline 12.3.2. ALS is supported by the Director, Office of Science,
Office of Basic Energy Sciences, Materials Science Division, of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231. The
microdiffraction program at the ALS beamline 12.3.2 was made possible by
NSF Grant No. 0416243.
NR 32
TC 8
Z9 8
U1 1
U2 25
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD MAR
PY 2013
VL 28
IS 5
BP 747
EP 756
DI 10.1557/jmr.2012.430
PG 10
WC Materials Science, Multidisciplinary
SC Materials Science
GA 107LG
UT WOS:000316218000011
ER
PT J
AU Closmann, JJ
Eliot, CA
Foss, RD
AF Closmann, James J.
Eliot, Colin A.
Foss, Robert D.
TI Ectomesenchymal Chondromyxoid Tumor: Report of a Case With Description
of Histologic and Immunohistochemical Findings
SO JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY
LA English
DT Article
ID ANTERIOR TONGUE
C1 [Closmann, James J.] Tripler Army Med Ctr, Honolulu, HI 96859 USA.
[Eliot, Colin A.] Joint Base Pearl Harbor Hickam, Joint POW MIA Accounting Command, Cent Identificat Lab, Honolulu, HI USA.
[Foss, Robert D.] USN, Dept Oral & Maxillofacial Pathol, Sch Postgrad Dent, Rockville, MD USA.
RP Closmann, JJ (reprint author), Tripler Army Med Ctr, 1 Jarrett White Rd, Honolulu, HI 96859 USA.
EM armyjawbreaker@gmail.com
NR 14
TC 2
Z9 2
U1 0
U2 0
PU W B SAUNDERS CO-ELSEVIER INC
PI PHILADELPHIA
PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA
SN 0278-2391
J9 J ORAL MAXIL SURG
JI J. Oral Maxillofac. Surg.
PD MAR
PY 2013
VL 71
IS 3
BP 545
EP 549
DI 10.1016/j.joms.2012.08.003
PG 5
WC Dentistry, Oral Surgery & Medicine
SC Dentistry, Oral Surgery & Medicine
GA 107YM
UT WOS:000316256900015
PM 23043966
ER
PT J
AU Aldridge, RL
Wynn, WW
Britch, SC
Allan, SA
Walker, TW
Geden, CJ
Hogsette, JA
Linthicum, KJ
AF Aldridge, Robert L.
Wynn, W. Wayne
Britch, Seth C.
Allan, Sandra A.
Walker, Todd W.
Geden, Christopher J.
Hogsette, Jerome A.
Linthicum, Kenneth J.
TI HIGH-THROUGHPUT MOSQUITO AND FLY BIOASSAY SYSTEM FOR NATURAL AND
ARTIFICIAL SUBSTRATES TREATED WITH RESIDUAL INSECTICIDES
SO JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION
LA English
DT Article
DE Barrier treatment; glass culture tube; aspirator; mosquito control;
Deployed War-Fighter Protection Program
ID BARRIER TREATMENTS; VEGETATION; EFFICACY; ENVIRONMENT
AB A high-throughput bioassay system to evaluate the efficacy of residual pesticides against mosquitoes and muscid flies with minimal insect handling was developed. The system consisted of 4 components made of readily available materials: 1) a CO2 anaesthetizing chamber, 2) a specialized aspirator, 3) a cylindrical flat-bottomed glass bioassay chamber assembly, and 4) a customized rack.
C1 [Aldridge, Robert L.; Wynn, W. Wayne; Britch, Seth C.; Allan, Sandra A.; Geden, Christopher J.; Hogsette, Jerome A.; Linthicum, Kenneth J.] ARS, USDA, Ctr Med Agr & Vet Entomol, Gainesville, FL 32608 USA.
[Walker, Todd W.] USN, Entomol Ctr Excellence, Air Stn, Jacksonville, FL 32212 USA.
RP Aldridge, RL (reprint author), ARS, USDA, Ctr Med Agr & Vet Entomol, 1600 SW 23rd Dr, Gainesville, FL 32608 USA.
FU US Department of Agriculture (USDA)-Agricultural Research Service; US
Department of Defense (DoD) Deployed War-Fighter Protection Program;
Kansas Biotechnology Authority (KBA)
FX This research was supported by the US Department of Agriculture
(USDA)-Agricultural Research Service, the US Department of Defense (DoD)
Deployed War-Fighter Protection Program, and the Kansas Biotechnology
Authority (KBA). Mention of trade names or commercial products in this
publication is solely for the purpose of providing specific information
and does not imply recommendation or endorsement by the USDA, the DoD,
or the KBA. The USDA is an equal opportunity provider and employer.
NR 18
TC 1
Z9 1
U1 1
U2 5
PU AMER MOSQUITO CONTROL ASSOC
PI MOUNT LAUREL
PA 15000 COMMERCE PARKWAY, SUITE C, MOUNT LAUREL, NJ 08054 USA
SN 8756-971X
J9 J AM MOSQUITO CONTR
JI J. Am. Mosq. Control Assoc.
PD MAR
PY 2013
VL 29
IS 1
BP 84
EP 87
PG 4
WC Entomology
SC Entomology
GA 109KU
UT WOS:000316368200015
PM 23687864
ER
PT J
AU Deschamps, JR
AF Deschamps, Jeffrey R.
TI Characterization of chitin preparations using powder and film X-ray
diffraction methods
SO POWDER DIFFRACTION
LA English
DT Article; Proceedings Paper
CT 13th European Powder Diffraction Conference (EPDIC)
CY OCT 28-31, 2012
CL Grenoble, FRANCE
DE chitin; chitosan; polysaccharide; X-ray diffraction
ID ALPHA-CHITIN; CRYSTAL-STRUCTURE; PROTEIN
AB Chitin is a natural polysaccharide found in many diverse phyla and almost always occurs in association with protein. In this study the chitin polymer is characterized by X-ray diffraction from its naturally occurring unprocessed state through various steps used in the purification procedure. In addition, the effect of different treatments on the final product is examined. These studies show that native chitin has a characteristic diffraction pattern that is not altered by the mild treatments used to isolate relatively pure chitin. Chitins prepared from different sources exhibit the same characteristic diffraction pattern. In addition, chitin films prepared using non-degrading solvents retain most of the characteristic patterns. De-acylation of chitin to produce chitosan results in large changes to the diffraction pattern. To a very limited extent features present in the diffraction pattern of native chitin can be recovered by re-acylation of chitosan. (C) 2013 International Centre for Diffraction Data. [doi: 10.1017/S0885715612000978]
C1 USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
RP Deschamps, JR (reprint author), USN, Res Lab, Ctr Biomol Sci & Engn, 4555 Overlook Ave, Washington, DC 20375 USA.
EM deschamps@nrl.navy.mil
OI Deschamps, Jeffrey/0000-0001-5845-0010
FU Naval Research Laboratory; Office of Naval Research
FX This work was supported in part by the Naval Research Laboratory and the
Office of Naval Research. The author thanks Dr W. Wong-Ng and Dr James
Kaduk for their advice in preparation and revision of the manuscript.
NR 21
TC 1
Z9 1
U1 0
U2 15
PU J C P D S-INT CENTRE DIFFRACTION DATA
PI NEWTOWN SQ
PA 12 CAMPUS BLVD, NEWTOWN SQ, PA 19073-3273 USA
SN 0885-7156
EI 1945-7413
J9 POWDER DIFFR
JI Powder Diffr.
PD MAR
PY 2013
VL 28
IS 1
BP 44
EP 48
DI 10.1017/S0885715612000978
PG 5
WC Materials Science, Characterization & Testing
SC Materials Science
GA 107PH
UT WOS:000316229900006
ER
PT J
AU Moshman, ND
Hobson, GV
Sritharan, SS
AF Moshman, Nathan D.
Hobson, Garth V.
Sritharan, Sivaguru S.
TI Method for Optimally Controlling Unsteady Shock Strength in One
Dimension
SO AIAA JOURNAL
LA English
DT Article; Proceedings Paper
CT 20th AIAA Computational Fluid Dynamics Conference
CY JUN 27-30, 2011
CL Honolulu, HI
SP AIAA
ID CONSERVATION-LAWS; GODUNOV METHOD; FLOWS; EQUATIONS; DESIGN
AB This paper presents a new formulation and computational solution of an optimal control problem concerning unsteady shock wave attenuation. The adjoint system of equations for the unsteady Euler system in one dimension is derived and used in an adjoint-based solution procedure for the optimal control. A novel algorithm is used to satisfy all necessary first-order optimality conditions while locally minimizing an appropriate cost functional. Distributed control solutions with certain physical constraints are calculated for attenuating blast waves similar to those generated by ignition overpressure from the shuttle's solid rocket booster during launch. Results are presented for attenuating shocks traveling at Mach 1.5 and 3.5 down to 85%, 80%, and 75 % of the uncontrolled wave's driving pressure. The control solutions give insight into the magnitude and location of energy dissipation necessary to decrease a given blast wave's overpressure to a set target level over a given spatial domain while using only as much control as needed. The solution procedure is sufficiently flexible such that it can be used to solve other optimal control problems constrained by partial differential equations that admit discontinuities and have fixed initial data and free final data at a free final time.
C1 [Moshman, Nathan D.; Hobson, Garth V.] USN, Postgrad Sch, Mech & Aerosp Engn Dept, Monterey, CA 93943 USA.
[Sritharan, Sivaguru S.] USN, Postgrad Sch, Ctr Decis Risk Controls & Signals Intelligence, Monterey, CA 93943 USA.
RP Moshman, ND (reprint author), USN, Postgrad Sch, Mech & Aerosp Engn Dept, 700 Dyer Road, Monterey, CA 93943 USA.
OI Sritharan, Sivaguru/0000-0003-2845-332X
NR 32
TC 0
Z9 0
U1 0
U2 11
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 MAR
PY 2013
VL 51
IS 3
BP 606
EP 614
DI 10.2514/1.J051924
PG 9
WC Engineering, Aerospace
SC Engineering
GA 098LQ
UT WOS:000315551200006
ER
PT J
AU Liu, J
Kailasanath, K
Boris, JP
Heeb, N
Munday, D
Gutmark, E
AF Liu, J.
Kailasanath, K.
Boris, J. P.
Heeb, N.
Munday, D.
Gutmark, E.
TI Effect of the Initial Turbulence Level on an Underexpanded Supersonic
Jet
SO AIAA JOURNAL
LA English
DT Article
ID LAYER
C1 [Liu, J.; Kailasanath, K.; Boris, J. P.] USN, Res Lab, Labs Computat Phys & Fluid Dynam, Washington, DC 20375 USA.
[Heeb, N.; Munday, D.; Gutmark, E.] Univ Cincinnati, Cincinnati, OH 45221 USA.
RP Liu, J (reprint author), USN, Res Lab, Labs Computat Phys & Fluid Dynam, Washington, DC 20375 USA.
EM JhLiu@lcp.nrl.navy.mil; kailas@lcp.nrl.navy.mil; boris@lcp.nrl.navy.mil;
heebns@mail.uc.edu; mundaydd@ucmail.uc.edu; Ephraim.Gutmark@uc.edu
OI Gutmark, Ephraim/0000-0001-7816-4257
FU Office of Naval Research; Office of Naval Research through NRL 6.1
Computational Physics Task Area
FX This research has been sponsored by the Office of Naval Research through
the Jet Noise Reduction Project under the Noise Induced Hearing Loss
Program, as well as through the NRL 6.1 Computational Physics Task Area.
The authors would like to thank Rainald Lohner from George Mason
University for his significant help with the code, FEFLO. Computing
resources have been provided by the Department of Defense (DoD) High
Performance Computing Modernization Program Office.
NR 15
TC 4
Z9 4
U1 0
U2 7
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA
SN 0001-1452
J9 AIAA J
JI AIAA J.
PD MAR
PY 2013
VL 51
IS 3
BP 741
EP 745
DI 10.2514/1.J051949
PG 5
WC Engineering, Aerospace
SC Engineering
GA 098LQ
UT WOS:000315551200019
ER
PT J
AU Catrysse, PB
Imai, FH
von Berg, DCL
Sheridan, JT
AF Catrysse, Peter B.
Imai, Francisco H.
von Berg, Dale C. Linne
Sheridan, John T.
TI Imaging systems and applications
SO APPLIED OPTICS
LA English
DT Editorial Material
ID CALIBRATION; DEPTH; ARRAY; FOCUS
AB Imaging systems have numerous applications in industrial, military, consumer, and medical settings. Assembling a complete imaging system requires the integration of optics, sensing, image processing, and display rendering. This issue features original research ranging from fundamental theories to novel imaging modalities and provides a systems perspective to imaging. (C) 2013 Optical Society of America
C1 [Catrysse, Peter B.] Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA.
[Imai, Francisco H.] Canon USA Inc, San Jose, CA 95134 USA.
[von Berg, Dale C. Linne] USN, Res Lab, Washington, DC 20375 USA.
[Sheridan, John T.] Sch Elect Elect & Commun Engn, Dublin 4, Ireland.
RP Catrysse, PB (reprint author), Stanford Univ, Edward L Ginzton Lab, Spilker Engn & Appl Sci Bldg, Stanford, CA 94305 USA.
EM pcatryss@stanford.edu
NR 13
TC 0
Z9 0
U1 0
U2 10
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1559-128X
EI 2155-3165
J9 APPL OPTICS
JI Appl. Optics
PD MAR 1
PY 2013
VL 52
IS 7
BP ISA1
EP ISA3
DI 10.1364/AO.52.00ISA1
PG 3
WC Optics
SC Optics
GA 101NQ
UT WOS:000315782100014
PM 23458823
ER
PT J
AU Reid, JS
Hyer, EJ
Johnson, RS
Holben, BN
Yokelson, RJ
Zhang, JL
Campbell, JR
Christopher, SA
Di Girolamo, L
Giglio, L
Holz, RE
Kearney, C
Miettinen, J
Reid, EA
Turk, FJ
Wang, J
Xian, P
Zhao, GY
Balasubramanian, R
Chew, BN
Janjai, S
Lagrosas, N
Lestari, P
Lin, NH
Mahmud, M
Nguyen, AX
Norris, B
Oanh, NTK
Oo, M
Salinas, SV
Welton, EJ
Liew, SC
AF Reid, Jeffrey S.
Hyer, Edward J.
Johnson, Randall S.
Holben, Brent N.
Yokelson, Robert J.
Zhang, Jianglong
Campbell, James R.
Christopher, Sundar A.
Di Girolamo, Larry
Giglio, Louis
Holz, Robert E.
Kearney, Courtney
Miettinen, Jukka
Reid, Elizabeth A.
Turk, F. Joseph
Wang, Jun
Xian, Peng
Zhao, Guangyu
Balasubramanian, Rajasekhar
Chew, Boon Ning
Janjai, Serm
Lagrosas, Nofel
Lestari, Puji
Lin, Neng-Huei
Mahmud, Mastura
Nguyen, Anh X.
Norris, Bethany
Oanh, Nguyen T. K.
Oo, Min
Salinas, Santo V.
Welton, E. Judd
Liew, Soo Chin
TI Observing and understanding the Southeast Asian aerosol system by remote
sensing: An initial review and analysis for the Seven Southeast Asian
Studies (7SEAS) program
SO ATMOSPHERIC RESEARCH
LA English
DT Review
DE Southeast Asia; Maritime Continent; Meteorology; Aerosol
ID BIOMASS-BURNING EMISSIONS; INDONESIAN FOREST-FIRES; OPTICAL TRANSIENT
DETECTOR; PHOTOSYNTHETICALLY ACTIVE RADIATION; BANGKOK METROPOLITAN
REGION; OZONE MAPPING SPECTROMETER; MADDEN-JULIAN OSCILLATION;
INDIVIDUAL AVHRR CHANNELS; CHEMICAL-TRANSPORT MODEL; PEAT SWAMP FOREST
AB Southeast Asia (SEA) hosts one of the most complex aerosol systems in the world, with convoluted meteorological scales, sharp geographic and socioeconomic features, high biological productivity, mixtures of a wide range of atmospheric pollutants, and likely a significant susceptibility to global climate change. This physical complexity of SEA is coupled with one of the world's most challenging environments for both in situ and remote sensing observation. The 7-Southeast Asian Studies (7SEAS) program was formed to facilitate interdisciplinary research into the integrated SEA aerosol environment via grass roots style collaboration. In support of the early 7SEAS program and the affiliated Southeast Asia Composition, Cloud, Climate Coupling Regional Study (SEAC(4)RS), this review was created to outline the network of connections linking aerosol particles in SEA with meteorology, climate and the total earth system. In this review, we focus on and repeatedly link back to our primary data source: satellite aerosol remote sensing and associated observability issues. We begin with a brief rationale for the program, outlining key aerosol impacts and, comparing their magnitudes to the relative uncertainty of observations. We then discuss aspects of SEA's physical, socio-economic and biological geography relevant to meteorology and observability issues associated with clouds and precipitation. We show that not only does SEA pose significant observability challenges for aerosol particles, but for clouds and precipitation as well. With the fundamentals of the environment outlined, we explore SEA's most studied aerosol issue: biomass burning. We summarize research on bulk aerosol properties for SEA, including a short synopsis of recent AERONET observations. We describe long range transport patterns. Finally, considerable attention is paid to satellite aerosol observability issues, with a face value comparison of common aerosol products in the region including passive and active aerosol products as well as fluxes. We show that satellite data products diverge greatly due to a host of known artifacts. These artifacts have important implications for how research is conducted, and care must be taken when using satellite products to study aerosol problems. The paper ends with a discussion of how the community can approach this complex and important environment. Published by Elsevier B.V.
C1 [Reid, Jeffrey S.; Hyer, Edward J.; Campbell, James R.; Reid, Elizabeth A.] USN, Marine Meteorol Div, Res Lab, Monterey, CA 93943 USA.
[Johnson, Randall S.; Zhang, Jianglong] Univ N Dakota, Dept Atmospher Sci, Grand Forks, ND 58201 USA.
[Holben, Brent N.; Welton, E. Judd] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Yokelson, Robert J.] Univ Montana, Dept Chem, Missoula, MT 59812 USA.
[Christopher, Sundar A.] Univ Alabama, Dept Atmospher Sci, Huntsville, AL 35899 USA.
[Di Girolamo, Larry; Zhao, Guangyu; Norris, Bethany] Univ Illinois, Dept Atmospher Sci, Urbana, IL 61801 USA.
[Giglio, Louis] Univ Maryland, Dept Geog, College Pk, MD 20742 USA.
[Holz, Robert E.; Oo, Min] Univ Wisconsin, Ctr Space Sci & Engn, Madison, WI 53706 USA.
[Kearney, Courtney] USN, Ocean Sci Div, Res Lab, Stennis, MS USA.
[Miettinen, Jukka; Chew, Boon Ning; Salinas, Santo V.; Liew, Soo Chin] Natl Univ Singapore, Ctr Remote Imaging Sensing & Proc, Singapore 117548, Singapore.
[Turk, F. Joseph] CALTECH, Jet Prop Lab, Pasadena, CA USA.
[Wang, Jun] Univ Nebraska, Dept Atmospher Sci, Lincoln, NE USA.
[Xian, Peng] USN, Res Lab, Monterey, CA USA.
[Balasubramanian, Rajasekhar] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117548, Singapore.
[Janjai, Serm] Silpakorn Univ, Dept Phys, Nakhon Pathom, Thailand.
[Lagrosas, Nofel] Ateneo Manila Univ, Manila Observ, Quezon City, Philippines.
[Lestari, Puji] Bandung Inst Technol, Dept Environm Engn, Bandung, Indonesia.
[Lin, Neng-Huei] Natl Cent Univ, Dept Atmospher Sci, Chungli 32054, Taiwan.
[Mahmud, Mastura] Univ Kebangsaan Malaysia, Earth Observat Ctr, Babangi Selangor, Malaysia.
[Nguyen, Anh X.] Acad Sci & Technol, Inst Geophys, Hanoi, Vietnam.
[Oanh, Nguyen T. K.] Asian Inst Technol, Dept Environm Engn & Management, Klongluang, Thailand.
RP Reid, JS (reprint author), USN, Marine Meteorol Div, Res Lab, 7 Grace Hopper Ave,Stop 2, Monterey, CA 93943 USA.
EM jeffrey.reid@nrlmry.navy.mil
RI Campbell, James/C-4884-2012; Liew, Soo Chin/C-9187-2011; Eclevia,
Marian/I-6486-2013; Balasubramanian, Rajasekhar/C-2243-2011; Reid,
Jeffrey/B-7633-2014; Wang, Jun/A-2977-2008; Chew, Boon Ning/M-2405-2016;
Yokelson, Robert/C-9971-2011; Hyer, Edward/E-7734-2011;
OI Campbell, James/0000-0003-0251-4550; Liew, Soo Chin/0000-0001-8342-4682;
Balasubramanian, Rajasekhar/0000-0002-5627-3628; Reid,
Jeffrey/0000-0002-5147-7955; Wang, Jun/0000-0002-7334-0490; Chew, Boon
Ning/0000-0002-2933-7788; Yokelson, Robert/0000-0002-8415-6808; Hyer,
Edward/0000-0001-8636-2026; LAGROSAS, NOFEL/0000-0002-8672-4717
FU Naval Research Laboratory Base Program; NASA Interdisciplinary Science
Program; Office of Naval Research [32]; National Aeronautics and Space
Administration; Jet Propulsion Laboratory; program for
application-oriented fundamental research projects (Ministry of Science
and Technology)
FX This paper was compiled with the efforts of many individuals on the 7
Southeast Asian Studies team across Southeast Asia and the United
States. Funding for the construction of this review was predominantly
through the Naval Research Laboratory Base Program and the NASA
Interdisciplinary Science Program. We are grateful to the AERONET
program and its members for the use of Southeast Asian regional data.
Randall Johnson and Jianglong Zhang were supported by the Office of
Naval Research Code 32. James Campbell was supported by the Office of
Naval Research Code 32. F. Joseph Turk's contribution was performed at
the Jet Propulsion Laboratory, under a contract with the National
Aeronautics and Space Administration. Larry Di Girolamo was partially
supported under contract with the Jet Propulsion Laboratory. Vietnam
funding provided by the program for application-oriented fundamental
research projects (Ministry of Science and Technology). We would like to
thank Ralph Kahn and Andrew Sayer (NASA GSFC) for helpful comments. We
are very grateful to the two anonymous reviewers for taking the time to
perform a thorough review of this long manuscript and making many
helpful suggestions. Finally, we remember our friend and colleague, Dr.
Greg Leptoukh who recently passed away. He was instrumental in creating
innovative ways to visualize and analyze satellite aerosol products. He
will be greatly missed.
NR 498
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PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0169-8095
EI 1873-2895
J9 ATMOS RES
JI Atmos. Res.
PD MAR
PY 2013
VL 122
BP 403
EP 468
DI 10.1016/j.atmosres.2012.06.005
PG 66
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098LT
UT WOS:000315551500032
ER
PT J
AU Xian, P
Reid, JS
Atwood, SA
Johnson, RS
Hyer, EJ
Westphal, DL
Sessions, W
AF Xian, Peng
Reid, Jeffrey S.
Atwood, Samuel A.
Johnson, Randall S.
Hyer, Edward J.
Westphal, Douglas L.
Sessions, Walter
TI Smoke aerosol transport patterns over the Maritime Continent
SO ATMOSPHERIC RESEARCH
LA English
DT Article
DE Smoke; Smoke transport; Aerosol transport; Maritime Continent; El Nino;
MJO
ID BIOMASS BURNING EMISSIONS; SEA-SURFACE TEMPERATURE; INSULAR
SOUTHEAST-ASIA; EL-NINO; INDIAN-OCEAN; INTERANNUAL VARIABILITY;
SATELLITE-OBSERVATIONS; SEASONAL VARIABILITY; TEMPORAL RESOLUTION;
INDONESIAN RAINFALL
AB Smoke transport patterns over the Maritime Continent (MC) are studied through a combination of approaches, including a) analyzing AODs obtained from satellite products; b) aerosol transport modeling with ADD assimilation along with the atmospheric flow patterns; c) analyzing smoke wet deposition distributions; and d) examining forward trajectories for smoke events defined in this study. It is shown that smoke transport pathways are closely related to the low-level atmospheric flow, i.e., during June-Sept, smoke originating from the MC islands with a dominant source over central and southern Sumatra, and southern and western Borneo, is generally transported northwestward south of the equator and northeastward north of the equator with the cross-equatorial flow, to the South China Sea (SCS), the Philippines and even further to the western Pacific. During the October-November transitional period, smoke transport paths are more zonally oriented compared to June-September. Smoke originating from Java, Bali, Timor etc, and southern New Guinea, which are in the domain of easterlies and southeasterlies during the boreal summer (June-November), is generally transported westward. It is also found that smoke transport over the MC exhibits multi-scale variability. Smoke typically lives longer and can be transported farther in El Nino years and later MJO phases compared with non El Nino years and earlier MJO phases. During El Nino periods there is much stronger westward transport to the east tropical Indian Ocean. Finally, orographic effect on smoke transport over the MC is also clearly discernable. (c) 2012 Elsevier B.V. All rights reserved.
C1 [Xian, Peng] USN, Res Lab, Monterey, CA 93943 USA.
[Reid, Jeffrey S.; Atwood, Samuel A.; Hyer, Edward J.; Westphal, Douglas L.; Sessions, Walter] USN, Meteorol Div, Res Lab, Monterey, CA 93943 USA.
[Atwood, Samuel A.] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA.
[Johnson, Randall S.] Univ N Dakota, Dept Atmospher Sci, Grand Forks, ND 58201 USA.
RP Xian, P (reprint author), USN, Marine Meteorol Div, Res Lab, 7 Grace Hopper Ave,Stop 2, Monterey, CA 93943 USA.
EM peng.lynch@nrlmry.navy.mil
RI Reid, Jeffrey/B-7633-2014; Hyer, Edward/E-7734-2011; Sessions,
Walter/O-8096-2014
OI Reid, Jeffrey/0000-0002-5147-7955; Hyer, Edward/0000-0001-8636-2026;
Sessions, Walter/0000-0002-5376-4894
FU NRL Base Program; NASA Interdisciplinary Science Program
FX Funding for this project was provided by the NRL Base Program and the
NASA Interdisciplinary Science Program. Mr. Atwoods' participation was
as part of the NRL NREIP summer internship program. We thank Dr. Joseph
Turk for his guide on using CMORPH precipitation data and Prof.
Jianglong Zhang for his help with the satellite images.
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PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0169-8095
EI 1873-2895
J9 ATMOS RES
JI Atmos. Res.
PD MAR
PY 2013
VL 122
BP 469
EP 485
DI 10.1016/j.atmosres.2012.05.006
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098LT
UT WOS:000315551500033
ER
PT J
AU Wang, J
Ge, C
Yang, ZF
Hyer, EJ
Reid, JS
Chew, BN
Mahmud, M
Zhang, YX
Zhang, MG
AF Wang, Jun
Ge, Cui
Yang, Zhifeng
Hyer, Edward J.
Reid, Jeffrey S.
Chew, Boon-Ning
Mahmud, Mastura
Zhang, Yongxin
Zhang, Meigen
TI Mesoscale modeling of smoke transport over the Southeast Asian Maritime
Continent: Interplay of sea breeze, trade wind, typhoon, and topography
SO ATMOSPHERIC RESEARCH
LA English
DT Article
DE Southeast Asian Maritime Continent; Smoke particles; Sea breeze; Trade
wind; Typhoon
ID CARBON-MONOXIDE; PLUME-RISE; WRF-CHEM; FIRE; EMISSIONS; MODIS; AFRICA;
INDONESIA; CHEMISTRY; ENSEMBLE
AB The online-coupled Weather Research and Forecasting model with Chemistry (WRFchem) is used to simulate the transport of smoke particles over the Southeast Asian Maritime Continent during September-October 2006. In this period, dry conditions associated with the moderate El Nino event caused the largest regional biomass burning outbreak since 1997. Smoke emission in WRFchem is specified according to the Fire Locating and Modeling of Burning Emissions (FLAMBE) database derived from Moderate Resolution Imaging Spectroradiometer (MODIS) fire products. The modeled smoke transport pathway is found to be consistent with the MODIS true color images and measured mass concentration of surface PM10 (particulate matter with diameter less than 10 mu m). The interplay of sea/land breezes, typhoons and storms over the subtropical western Pacific Ocean, trade winds, and topographic effects, can be clearly seen in the model simulation. The most severe smoke events in 1-5 October 2006 are found to be associated with the meteorological responses to the typhoon Xangsane (#18) over the western subtropical Pacific Ocean, which moved smoke from Sumatra eastward in the lower troposphere (below 700 hPa), forming smoke layers mixed with and above the boundary layer clouds over Borneo. In contrast, the second largest week-long smoke transport event of 15-18 October 2006 was associated with the seasonal monsoonal transition period, during which smoke plumes were wide spread over the 5 degrees S-5 degrees N zone as a result of (a) the near surface divergence coupled with the 700 hPa bifurcation of wind (flowing both to the west and to the east), and (b) the near-surface southeasterly and easterly winds along the equator transporting smoke from Borneo to Sumatra and Peninsular Malaysia. Analysis of data from the Cloud-Aerosol Lidar with Orthogonal Polarisation (CALIOP) shows that smoke particles in October 2006 were primarily located within 3.5 km above the surface. Smoke particles contributed roughly half of the total aerosol extinction retrieved by CALIOP. Results suggest that the smoke injection height in the model should be set lower than the 2-5 km commonly used in transport simulations; smoke release at similar to 0.8 km instead of 2 km above surface gives a consistently better match to CALIOP observations. Numerical experiments further show that the Titiwangsa Mountains in Malaysia Peninsula and Tama Abu Mountains in Borneo have significant impacts on smoke transport and the surface air quality in the vicinity. Published by Elsevier B.V.
C1 [Wang, Jun; Ge, Cui; Yang, Zhifeng] Univ Nebraska, Dept Earth & Atmospher Sci, Lincoln, NE USA.
[Hyer, Edward J.; Reid, Jeffrey S.] USN, Marine Meteorol Div, Res Lab, Monterey, CA USA.
[Chew, Boon-Ning] Natl Univ Singapore, Ctr Remote Imaging Sensing & Proc, Singapore 117548, Singapore.
[Mahmud, Mastura] Univ Kebangsaan Malaysia, Earth Observat Ctr, Bangi, Malaysia.
[Zhang, Yongxin] Natl Ctr Atmospher Res, Res Applicat Lab, Boulder, CO USA.
[Ge, Cui; Zhang, Meigen] Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing, Peoples R China.
RP Wang, J (reprint author), 303 Bessey Hall, Lincoln, NE 68588 USA.
EM jwang7@unl.edu
RI Wang, Jun/A-2977-2008; Wang, ZF/D-7202-2012; Reid, Jeffrey/B-7633-2014;
Hyer, Edward/E-7734-2011; Yang, Zhifeng/I-8253-2015; Ge,
Cui/I-6353-2016; Chew, Boon Ning/M-2405-2016
OI Wang, Jun/0000-0002-7334-0490; Wang, ZF/0000-0002-7062-6012; Reid,
Jeffrey/0000-0002-5147-7955; Hyer, Edward/0000-0001-8636-2026; Ge,
Cui/0000-0002-6182-6856; Chew, Boon Ning/0000-0002-2933-7788
FU NASA New Investigator Program [NNX08AQ86G]; NASA Atmospheric Chemistry
Modeling and Analysis Program [NNX10AG60G]; NASA Applied Science Program
[NNX11AJ03G]; NASA Interdisciplinary Science Program; NRL 6.1 base
program
FX This research is supported by NASA New Investigator Program (NNX08AQ86G)
to J. Wang, NASA Atmospheric Chemistry Modeling and Analysis Program
(NNX10AG60G), NASA Applied Science Program (NNX11AJ03G), and NASA
Interdisciplinary Science Program. Drs. Hyer's and Reid's contributions
were supported by the NRL 6.1 base program.
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PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0169-8095
EI 1873-2895
J9 ATMOS RES
JI Atmos. Res.
PD MAR
PY 2013
VL 122
BP 486
EP 503
DI 10.1016/j.atmosres.2012.05.009
PG 18
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098LT
UT WOS:000315551500034
ER
PT J
AU Hyer, EJ
Reid, JS
Prins, EM
Hoffman, JP
Schmidt, CC
Miettinen, JI
Giglio, L
AF Hyer, Edward J.
Reid, Jeffrey S.
Prins, Elaine M.
Hoffman, Jay P.
Schmidt, Christopher C.
Miettinen, Jukka I.
Giglio, Louis
TI Patterns of fire activity over Indonesia and Malaysia from polar and
geostationary satellite observations
SO ATMOSPHERIC RESEARCH
LA English
DT Article
DE Biomass burning; Remote sensing; Fire; Smoke
ID BIOMASS BURNING EMISSIONS; INSULAR SOUTHEAST-ASIA; RADIATIVE POWER;
DIURNAL FIRE; MODIS; RESOLUTION; AMERICA; VALIDATION; PRODUCT; AVHRR
AB Biomass burning patterns over the Maritime Continent of Southeast Asia are examined using a new active fire detection product based on application of the Wildfire Automated Biomass Burning Algorithm (WF_ABBA) to data from the imagers on the MTSAT geostationary satellites operated by the Japanese space agency JAXA. Data from MTSAT-1R and MTSAT-2 covering 34 months from September 2008 to July 2011 are examined for a study region consisting of Indonesia, Malaysia, and nearby environs. The spatial and temporal distributions of fires detected in the MTSAT WF_ABBA product are described and compared with active fire observations from MODIS MOD14 data. Land cover distributions for the two instruments are examined using a new 250 m land cover product from the National University of Singapore. The two products show broadly similar patterns of fire activity, land cover distribution of fires, and pixel fire radiative power (FRP). However, the MTSAT WF_ABBA data differ from MOD14 in important ways. Relative to MODIS, the MTSAT WF_ABBA product has lower overall detection efficiency, but more fires detected due to more frequent looks, a greater relative fraction of fires in forest and a lower relative fraction of fires in open areas, and significantly higher single-pixel retrieved FRP. The differences in land cover distribution and FRP between the MTSAT and MODIS products are shown to be qualitatively consistent with expectations based on pixel size and diurnal sampling. The MTSAT WF_ABBA data are used to calculate coverage-corrected diurnal cycles of fire for different regions within the study area. These diurnal cycles are preliminary but demonstrate that the fraction of diurnal fire activity sampled by the two MODIS sensors varies significantly by region and vegetation type. Based on the results from comparison of the two fire products, a series of steps is outlined to account for some of the systematic biases in each of these satellite products in order to produce a successful merged fire detection product. Published by Elsevier B.V.
C1 [Hyer, Edward J.; Reid, Jeffrey S.] USN, Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
[Prins, Elaine M.; Hoffman, Jay P.; Schmidt, Christopher C.] Univ Wisconsin, Cooperat Inst Meteorol Satellite Studies Consulta, Madison, WI USA.
[Miettinen, Jukka I.] Natl Univ Singapore, Ctr Remote Imaging Sensing & Proc, Singapore 117548, Singapore.
[Giglio, Louis] Univ Maryland, Dept Geog, College Pk, MD 20742 USA.
RP Hyer, EJ (reprint author), USN, Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
EM edward.hyer@nrlmry.navy.mil
RI Reid, Jeffrey/B-7633-2014; Hyer, Edward/E-7734-2011
OI HOFFMAN, JAY/0000-0002-1127-6294; Reid, Jeffrey/0000-0002-5147-7955;
Hyer, Edward/0000-0001-8636-2026
FU NASA Interdisciplinary Science Program
FX This work was supported by the NASA Interdisciplinary Science Program.
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PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0169-8095
J9 ATMOS RES
JI Atmos. Res.
PD MAR
PY 2013
VL 122
BP 504
EP 519
DI 10.1016/j.atmosres.2012.06.011
PG 16
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098LT
UT WOS:000315551500035
ER
PT J
AU Campbell, JR
Reid, JS
Westphal, DL
Zhang, JL
Tackett, JL
Chew, BN
Welton, EJ
Shimizu, A
Sugimoto, N
Aoki, K
Winker, DM
AF Campbell, James R.
Reid, Jeffrey S.
Westphal, Douglas L.
Zhang, Jianglong
Tackett, Jason L.
Chew, Boon Ning
Welton, Ellsworth J.
Shimizu, Atsushi
Sugimoto, Nobuo
Aoki, Kazuma
Winker, David M.
TI Characterizing the vertical profile of aerosol particle extinction and
linear depolarization over Southeast Asia and the Maritime Continent:
The 2007-2009 view from CALIOP
SO ATMOSPHERIC RESEARCH
LA English
DT Article
DE CALIPSO; Lidar; Southeast Asia; Maritime Continent; Aerosol particle
scattering; Aerosol composition
ID OPTICAL DEPTH; DATA-ASSIMILATION; TROPOSPHERIC AEROSOLS; LIDAR
OBSERVATIONS; RADIATIVE IMPACTS; SUMMER MONSOON; MODIS; CALIPSO; CLOUD;
SATELLITE
AB Vertical profiles of 0.532 mu m aerosol particle extinction coefficient and linear volume depolarization ratio are described for Southeast Asia and the Maritime Continent Quality-screened and cloud-cleared Version 3.01 Level 2 NASA Cloud Aerosol Lidar with Orthogonal Polarization (CALIOP) 5-km Aerosol Profile datasets are analyzed from 2007 to 2009. Numerical simulations from the U.S. Naval Aerosol Analysis and Predictive System (NAAPS), featuring two-dimensional variational assimilation of NASA Moderate Resolution Imaging Spectroradiometer and Multi-angle Imaging Spectra-Radiometer quality-assured datasets, combined with regional ground-based lidar measurements, are considered for assessing CALIOP retrieval performance, identifying bias, and evaluating regional representativeness. CALIOP retrievals of aerosol particle extinction coefficient and aerosol optical depth (AOD) are high over land and low over open waters relative to NAAPS (0.412/0.312 over land for all data points inclusive, 0.310/0.235 when the per bin average is used and each is treated as single data points; 0.102/0.151 and 0.086/0.124, respectively, over ocean). Regional means, however, are very similar (0.180/0.193 for all data points and 0.155/0.159 when averaged per normalized bin), as the two factors offset one another. The land/ocean offset is investigated, and discrepancies attributed to interpretation of particle composition and a-priori assignment of the extinction-to-backscatter ratio ("lidar ratio") necessary for retrieving the extinction coefficient from CALIOP signals. Over land, NAAPS indicates more dust present than CALIOP algorithms are identifying, indicating a likely assignment of a higher lidar ratio representative of more absorptive particles. NAAPS resolves more smoke over water than identified with CALIOP, indicating likely usage of a lidar ratio characteristic of less absorptive particles to be applied that biases low AOD there. Over open waters except within the Bay of Bengal, aerosol particle scattering is largely capped below 1.5 km MSL, though ground-based lidar measurements at Singapore differ slightly from this finding. Significant aerosol particle presence over land is similarly capped near 3.0 km MSL over most regions. Particle presence at low levels regionally, except over India, is dominated by relatively non-depolarizing particles. Industrial haze, sea salt droplets and fresh smoke are thus most likely present Published by Elsevier B.V.
C1 [Campbell, James R.; Reid, Jeffrey S.; Westphal, Douglas L.] USN, Aerosol & Radiat Sci Sect, Marine Meteorol Div, Res Lab, Monterey, CA 93943 USA.
[Zhang, Jianglong] Univ N Dakota, Dept Atmospher Sci, Grand Folks, ND USA.
[Tackett, Jason L.] NASA, Langley Res Ctr, Sci Syst & Applicat Inc, Hampton, VA 23665 USA.
[Chew, Boon Ning] Natl Univ Singapore, Ctr Remote Imaging Sensing & Proc, Singapore 117548, Singapore.
[Welton, Ellsworth J.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Shimizu, Atsushi; Sugimoto, Nobuo] Natl Inst Environm Studies, Tsukuba, Ibaraki, Japan.
[Aoki, Kazuma] Toyama Univ, Dept Earth Sci, Toyama 930, Japan.
[Winker, David M.] NASA, Langley Res Ctr, Hampton, VA 23665 USA.
RP Campbell, JR (reprint author), USN, Aerosol & Radiat Sci Sect, Marine Meteorol Div, Res Lab, Monterey, CA 93943 USA.
EM james.campbell@nrlmry.navy.mil
RI Campbell, James/C-4884-2012; Reid, Jeffrey/B-7633-2014; Shimizu,
Atsushi/C-2810-2009; Sugimoto, Nobuo/C-5189-2015; Chew, Boon
Ning/M-2405-2016
OI Campbell, James/0000-0003-0251-4550; Reid, Jeffrey/0000-0002-5147-7955;
Shimizu, Atsushi/0000-0002-7306-7412; Sugimoto,
Nobuo/0000-0002-0545-1316; Chew, Boon Ning/0000-0002-2933-7788
FU Office of Naval Research [35]; NASA Interagency Agreement on behalf of
the Micropulse Lidar Network (MPLNET) [NNG11HG12I]
FX This research was funded by the Office of Naval Research Code 35. Author
JRC acknowledges the support of NASA Interagency Agreement NNG11HG12I on
behalf of the Micropulse Lidar Network (MPLNET). MPLNET is operated with
the support of the NASA Radiation Sciences Program. The authors thank
Mark A. Vaughan at NASA Langley Research Center with his help
interpreting the CALIOP Level 2.0 Aerosol Profile datasets. The group
acknowledges the NASA AERONET program, their contributing principal
investigators and staff for coordinating the coastal and inland sites
used in this investigation.
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J9 ATMOS RES
JI Atmos. Res.
PD MAR
PY 2013
VL 122
BP 520
EP 543
DI 10.1016/j.atmosres.2012.05.007
PG 24
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098LT
UT WOS:000315551500036
ER
PT J
AU Salinas, SV
Chew, BN
Miettinen, J
Campbell, JR
Welton, EJ
Reid, JS
Yu, LYE
Liew, SC
AF Salinas, Santo V.
Chew, Boon Ning
Miettinen, Jukka
Campbell, James R.
Welton, Ellsworth J.
Reid, Jeffrey S.
Yu, Liya E.
Liew, Soo Chin
TI Physical and optical characteristics of the October 2010 haze event over
Singapore: A photometric and lidar analysis
SO ATMOSPHERIC RESEARCH
LA English
DT Article
DE Aerosols; Haze; Air quality; AERONET; MPLNET; South East Asia
ID BIOMASS BURNING AEROSOLS; DIRECT SUN DATA; EL-NINO; FOREST-FIRES;
AIR-QUALITY; INDONESIA; DEPTH; SMOKE; AERONET; IMPACT
AB Trans-boundary biomass burning smoke episodes have increased dramatically during the past 20-30 years and have become an annual phenomenon in the South-East-Asia region. On 15th October 2010, elevated levels of fire activity were detected by remote sensing satellites (e.g. MODIS). On the same date, measurements of fine particulate matter (PM2.5) at Singapore and Malaysia found high levels of fine mode particles in the local environment. All these observations were indicative of the initial onset of a smoke episode that lasted for several days. In this work, we investigate the temporal evolution of this smoke episode by analyzing the physical and optical properties of smoke particles with the aid of an AERONET Sun photometer, an MPLNet micropulse lidar, and surface PM2.5 measurements. Elevated levels of fire activity coupled with high aerosol optical depth and PM2.5 were observed over a period of nine days. Increased variability of parameters such as aerosol optical depth, Angstrom exponent number and its fine mode equivalents all indicated high levels of fine particulate presence in the atmosphere. Smoke particle growth due to aging, coagulation and condensation mechanisms was detected during the afternoons and over several days. Retrieved lidar ratios were compatible with the presence of fine particulate within the boundary/aerosol layer. Moreover, retrieved particle size distribution as well as single scattering albedo indicated the prevalence of the fine mode particulate regime as well as particles showing enhanced levels of absorption respectively. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Salinas, Santo V.; Chew, Boon Ning; Miettinen, Jukka; Liew, Soo Chin] Natl Univ Singapore, CRISP, Singapore 119076, Singapore.
[Campbell, James R.] NASA, Goddard Space Flight Ctr, Sigma Space Corp, Greenbelt, MD 20771 USA.
[Welton, Ellsworth J.] NASA, Goddard Space Flight Ctr, Micropulse Lidar Network, Greenbelt, MD 20771 USA.
[Reid, Jeffrey S.] USN, Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
[Yu, Liya E.] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 119076, Singapore.
RP Salinas, SV (reprint author), Natl Univ Singapore, CRISP, Block S17,Level 2,10 Lower Kent Ridge Rd, Singapore 119076, Singapore.
EM crsscsv@nus.edu.sg
RI Campbell, James/C-4884-2012; Yu, Liya/H-2573-2013; Liew, Soo
Chin/C-9187-2011; Reid, Jeffrey/B-7633-2014; Xiongfei, Zhao/G-7690-2015;
Chew, Boon Ning/M-2405-2016
OI Campbell, James/0000-0003-0251-4550; Yu, Liya/0000-0001-9182-6593; Liew,
Soo Chin/0000-0001-8342-4682; Reid, Jeffrey/0000-0002-5147-7955; Chew,
Boon Ning/0000-0002-2933-7788
FU Agency for Science, Technology & Research (A*STAR) of Singapore
FX The authors would like to thank AERONET and MPLNET for processing and
archiving the Sun photometer and lidar data. CRISP would like to thank
the Agency for Science, Technology & Research (A*STAR) of Singapore for
Financial support.
NR 60
TC 22
Z9 23
U1 1
U2 80
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0169-8095
EI 1873-2895
J9 ATMOS RES
JI Atmos. Res.
PD MAR
PY 2013
VL 122
BP 555
EP 570
DI 10.1016/j.atmosres.2012.05.021
PG 16
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098LT
UT WOS:000315551500038
ER
PT J
AU Betha, R
Pradani, M
Lestari, P
Joshi, UM
Reid, JS
Balasubramanian, R
AF Betha, Raghu
Pradani, Maharani
Lestari, Puji
Joshi, Umid Man
Reid, Jeffrey S.
Balasubramanian, Rajasekhar
TI Chemical speciation of trace metals emitted from Indonesian peat fires
for health risk assessment
SO ATMOSPHERIC RESEARCH
LA English
DT Article
DE Peat fires; Health risk; Chemical speciation; Trace metals
ID PARTICULATE AIR-POLLUTION; SOUTHEAST-ASIA; FOREST-FIRES; LABORATORY
MEASUREMENTS; OPTICAL-PROPERTIES; DAILY MORTALITY; LUNG INJURY; EL-NINO;
BIOMASS; AEROSOLS
AB Regional smoke-induced haze in Southeast Asia, caused by uncontrolled forest and peat fires in Indonesia, is of major environmental and health concern. In this study, we estimated carcinogenic and non-carcinogenic health risk due to exposure to fine particles (PM2.5) as emitted from peat fires at Kalimantan, Indonesia. For the health risk analysis, chemical speciation (exchangeable, reducible, oxidizable, and residual fractions) of 12 trace metals (Al, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Ti, V and Zn) in PM2.5 was studied. Results indicate that Al, Fe and Ti together accounted for a major fraction of total metal concentrations (similar to 83%) in PM2.5 emissions in the immediate vicinity of peat fires. Chemical speciation reveals that a major proportion of most of the metals, with the exception of Cr, Mn, Fe, Ni and Cd, was present in the residual fraction. The exchangeable fraction of metals, which represents their bioavailability, could play a major role in inducing human health effects of PM2.5. This fraction contained carcinogenic metals such as Cd (39.2 ng m(-3)) and Ni (249.3 ng m(-3)) that exceeded their WHO guideline values by several factors. Health risk estimates suggest that exposure to PM2.5 emissions in the vicinity of peat fires poses serious health threats. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Betha, Raghu; Balasubramanian, Rajasekhar] Natl Univ Singapore, Dept Civil & Environm Engn, Fac Engn, Singapore 117576, Singapore.
[Pradani, Maharani; Lestari, Puji] Inst Technol Bandung, Fac Civil & Environm Engn, Dept Environm Engn, Bandung 40132, Indonesia.
[Joshi, Umid Man; Balasubramanian, Rajasekhar] Natl Univ Singapore, Singapore Delft Water Alliance, Singapore 117576, Singapore.
[Reid, Jeffrey S.] USN, Marine Meteorol Div, Res Lab, Monterey, CA 93943 USA.
RP Balasubramanian, R (reprint author), Natl Univ Singapore, Dept Civil & Environm Engn, Fac Engn, 1 Engn Dr 2,E1A-07-03, Singapore 117576, Singapore.
EM ceerbala@nus.edu.sg
RI Balasubramanian, Rajasekhar/C-2243-2011; Reid, Jeffrey/B-7633-2014;
Betha, Raghu/H-3888-2014
OI Balasubramanian, Rajasekhar/0000-0002-5627-3628; Reid,
Jeffrey/0000-0002-5147-7955;
FU National University of Singapore
FX This field study was conducted in Indonesia as part of the 7 SEAS
program. We are thankful to the National University of Singapore for
providing the financial support to carry out the PM2.5
characterization study.
NR 58
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Z9 22
U1 3
U2 64
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0169-8095
EI 1873-2895
J9 ATMOS RES
JI Atmos. Res.
PD MAR
PY 2013
VL 122
BP 571
EP 578
DI 10.1016/j.atmosres.2012.05.024
PG 8
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098LT
UT WOS:000315551500039
ER
PT J
AU Turk, FJ
Xian, P
AF Turk, F. Joseph
Xian, Peng
TI An assessment of satellite-based high resolution precipitation datasets
for atmospheric composition studies in the maritime continent
SO ATMOSPHERIC RESEARCH
LA English
DT Article
DE Precipitation; Aerosol; TRMM; GPM; MODIS
ID PASSIVE MICROWAVE; RAINFALL; SMOKE; TRANSPORT; AEROSOLS; REGIONS; ASIA
AB The Maritime Continent (MC) region of Southeast Asia is known for land use practices that are modulated by precipitation occurrence and fire activity. The polluted environment may modify cloud/precipitation formation mechanisms, but meteorological or weather patterns may disrupt or otherwise influence these same processes. Since the simultaneous retrieval of precipitation and aerosol properties is not possible from current satellite observations, the choice of the precipitation dataset used for applications such as model assimilation and scavenging in aerosol transport models could provide very different results. In this article, a seven-year (2003-2009) time period was analyzed with five satellite-based high-resolution precipitation products (HRPP), the MERRA model reanalysis, and MODIS-derived aerosol observations within nine Southeast Asia domains. Substantially different trends between the aerosol concentration and precipitation time series were noted for different MC island regions, as well as HRPP differences in the precipitation diurnal variability and their capability to track precipitation extremes. For all regions, the most noticeable change to the diurnal cycle was noted during the genesis phase (Phase 1 in the MC) of the intraseasonal Madden Julian Oscillation (MJO). Since these studies do not take any aerosol transport or precipitation dynamics into account, the use of Lagrangian models is proposed to study non-localized aerosol/precipitation interactions and better establish their veracity in current model simulations. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Turk, F. Joseph] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Xian, Peng] USN, Res Lab, Marine Meteorol Div, Monterey, CA 93940 USA.
RP Turk, FJ (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA.
EM jturk@jpl.nasa.gov
FU NASA; Naval Research Laboratory Base Program; JST-CREST
FX The authors acknowledge support from NASA's Interdisciplinary Science
(IDS) program through Dr. Hal Maring. The first author's work was
performed at the Jet Propulsion Laboratory, California Institute of
Technology, under contract with the National Aeronautics and Space
Administration. The second author acknowledges partial support from the
Naval Research Laboratory Base Program. The GSMaP Project was sponsored
by JST-CREST and is promoted by the JAXA Precipitation Measuring Mission
(PMM) Science Team, and the GSMaP products were distributed by the Earth
Observation Research Center, Japan Aerospace Exploration Agency. The
authors are grateful for the comments provided by the two independent
reviewers.
NR 38
TC 10
Z9 10
U1 2
U2 11
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0169-8095
J9 ATMOS RES
JI Atmos. Res.
PD MAR
PY 2013
VL 122
BP 579
EP 598
DI 10.1016/j.atmosres.2012.02.017
PG 20
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098LT
UT WOS:000315551500040
ER
PT J
AU Satter, EK
AF Satter, Elizabeth K.
TI DERMATOPATHOLOGY DIAGNOSIS The best diagnosis is: Kaposi Sarcoma
SO CUTIS
LA English
DT Editorial Material
C1 [Satter, Elizabeth K.] USN, Med Ctr, Dept Dermatol, San Diego, CA 92134 USA.
[Satter, Elizabeth K.] USN, Med Ctr, Dept Pathol, San Diego, CA 92134 USA.
RP Satter, EK (reprint author), USN, Med Ctr, Dept Dermatol, 34520 Bob Wilson Dr,Ste 300, San Diego, CA 92134 USA.
EM elizabeth.satter@med.navy.mil
NR 2
TC 1
Z9 1
U1 0
U2 2
PU QUADRANT HEALTHCOM INC
PI PARSIPPANY
PA 7 CENTURY DRIVE, STE 302, PARSIPPANY, NJ 07054-4603 USA
SN 0011-4162
J9 CUTIS
JI Cutis
PD MAR
PY 2013
VL 91
IS 3
BP 120
EP +
PG 3
WC Dermatology
SC Dermatology
GA 105AQ
UT WOS:000316038400002
PM 23617079
ER
PT J
AU Xu, P
Ackerman, ML
Barber, SD
Schoelz, JK
Qi, DJ
Thibado, PM
Wheeler, VD
Nyakiti, LO
Myers-Ward, RL
Eddy, CR
Gaskill, DK
AF Xu, Peng
Ackerman, Matthew L.
Barber, Steven D.
Schoelz, James K.
Qi, Dejun
Thibado, Paul M.
Wheeler, Virginia D.
Nyakiti, Luke O.
Myers-Ward, Rachael L.
Eddy, Charles R., Jr.
Gaskill, D. Kurt
TI Graphene Manipulation on 4H-SiC(0001) Using Scanning Tunneling
Microscopy
SO JAPANESE JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID EPITAXIAL GRAPHENE; SURFACE
AB Atomic-scale topography of epitaxial multilayer graphene grown on 4H-SiC(0001) was investigated using scanning tunneling microscopy (STM). Bunched nano-ridges ten times smaller than previously recorded were observed throughout the surface, the morphology of which was systematically altered using a relatively new technique called electrostatic-manipulation scanning tunneling microscopy. Transformed graphene formations sometimes spontaneously returned to their original morphology, while others permanently changed. Using an electrostatic model, we calculate that a force up to similar to 5 nN was exerted by the STM tip, and an energy of around 10 eV was required to alter the geometry of a similar to 100 x 200 nm(2) area. (c) 2013 The Japan Society of Applied Physics
C1 [Xu, Peng; Ackerman, Matthew L.; Barber, Steven D.; Schoelz, James K.; Qi, Dejun; Thibado, Paul M.] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA.
[Wheeler, Virginia D.; Nyakiti, Luke O.; Myers-Ward, Rachael L.; Eddy, Charles R., Jr.; Gaskill, D. Kurt] USN, Res Lab, Washington, DC 20375 USA.
RP Xu, P (reprint author), Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA.
RI Barber, Steven/C-2467-2012; Xu, Peng/I-9125-2014
OI Barber, Steven/0000-0002-3191-9453;
FU ONR [N00014-10-1-0181]; NSF [DMR-0855358]; Office of Naval Research;
ASEE
FX P.X. and P.T. gratefully acknowledge the financial support of ONR under
grant N00014-10-1-0181 and NSF under grant DMR-0855358. Work at the U.S.
Naval Research Laboratory is supported by the Office of Naval Research.
LON gratefully acknowledges postdoctoral fellowship support through the
ASEE.
NR 25
TC 1
Z9 1
U1 2
U2 48
PU JAPAN SOC APPLIED PHYSICS
PI TOKYO
PA KUDAN-KITA BUILDING 5TH FLOOR, 1-12-3 KUDAN-KITA, CHIYODA-KU, TOKYO,
102-0073, JAPAN
SN 0021-4922
J9 JPN J APPL PHYS
JI Jpn. J. Appl. Phys.
PD MAR
PY 2013
VL 52
IS 3
AR 035104
DI 10.7567/JJAP.52.035104
PN 1
PG 4
WC Physics, Applied
SC Physics
GA 100BE
UT WOS:000315668900029
ER
PT J
AU Henderson, GR
Leathers, DJ
Hanson, B
AF Henderson, Gina R.
Leathers, Daniel J.
Hanson, Brian
TI Circulation Response to Eurasian versus North American Anomalous Snow
Scenarios in the Northern Hemisphere with an AGCM Coupled to a Slab
Ocean Model
SO JOURNAL OF CLIMATE
LA English
DT Article
ID ATLANTIC CLIMATE VARIABILITY; ARCTIC OSCILLATION; WINTER CLIMATE;
LARGE-ENSEMBLE; COVER; TEMPERATURE; ATMOSPHERE; PREDICTABILITY;
PERTURBATIONS; NAO
AB The difference between snow-covered and snow-free conditions is the most climatically significant natural seasonal change the land surface can experience. Most GCM studies investigating snow-atmosphere interactions have focused on impacts of Eurasian snow anomalies caused by the magnitude of snow mass, while North American snow has been shown to have a weaker relationship with downstream climate. Experiment design of recent snow-atmosphere interactions studies has been limited to atmosphere-only models, with sea surface temperature (SST) and sea ice extent represented as boundary conditions. The authors explore the circulation response to anomalous snow scenarios, for both North America and Eurasia, using a slab ocean model. Surface response include significant SST cooling directly downstream of each individual forcing region in addition to upstream centers of remote cooling under maximum snow conditions. Atmospheric response to anomalous snow conditions is consistent through multiple levels in the lower troposphere under maximum snow conditions throughout much of the midlatitudes in both experiments during early winter. Areas of strengthened midtropospheric eddy kinetic energy correlate well with steep geopotential height gradient differences and increased zonal wind at 250 hPa over the western Pacific. Both experiments show similar atmospheric response pathways; however, circulation response to maximum Eurasian snow is focused downstream in early winter, whereas upstream response is particularly evident from the North American experiment. This paper focuses on differences as a result of Eurasian versus North American snow forcing in atmospheric circulation response using an AGCM with a slab ocean model.
C1 [Henderson, Gina R.] USN Acad, Annapolis, MD 21402 USA.
[Leathers, Daniel J.; Hanson, Brian] Univ Delaware, Newark, DE USA.
RP Henderson, GR (reprint author), USN Acad, Dept Oceanog, 572C Holloway Rd, Annapolis, MD 21402 USA.
EM ghenders@usna.edu
FU Georgia State's IBM system p5 supercomputer through a partnership of the
Southeastern Universities Research Association; IBM; Georgia Research
Alliance
FX The authors thank Dr. Hengchun Ye for her assistance with the regridding
of the observed Eurasian snow depth data. The computing aspect of this
project was supported by Georgia State's IBM system p5 supercomputer,
acquired through a partnership of the Southeastern Universities Research
Association and IBM supporting the SURAgrid initiative, with additional
support from the Georgia Research Alliance.
NR 47
TC 3
Z9 3
U1 1
U2 9
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8755
J9 J CLIMATE
JI J. Clim.
PD MAR
PY 2013
VL 26
IS 5
BP 1502
EP 1515
DI 10.1175/JCLI-D-11-00465.1
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098TK
UT WOS:000315571800003
ER
PT J
AU Terwey, W
Abarca, SF
Montgomery, MT
AF Terwey, Wesley
Abarca, Sergio F.
Montgomery, Michael T.
TI Comments on "Convectively Generated Potential Vorticity in Rainbands and
Formation of the Secondary Eyewall in Hurricane Rita of 2005"
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Editorial Material
ID VORTEX ROSSBY-WAVES; SIMULATED TROPICAL CYCLONE; CONCENTRIC EYEWALLS;
INTENSITY CHANGES; SPIRAL BANDS; PART I; EVOLUTION; TYPHOONS; FLOW
AB In a previous paper Judt and Chen propose that secondary eyewall formation can be the result of the accumulation of convectively generated potential vorticity in the rainbands. They argue that secondary potential vorticity maxima precede the development of the secondary wind maximum and conclude that vortex Rossby waves do not contribute to the formation of the secondary eyewall. Amidst examination of their thought-provoking study, some questions arose regarding their methodology, interpretation, and portrayal of previous literature.
Here the authors inquire about aspects of the methodology for diagnosing vortex Rossby waves and assessing their impact on their simulation. Inaccuracies in the literature review are noted and further analysis of existing, three-dimensional, full-physics, numerical hurricane integrations that exhibit canonical secondary eyewalls are encouraged.
C1 [Terwey, Wesley] Univ S Alabama, Mobile, AL 36688 USA.
[Abarca, Sergio F.; Montgomery, Michael T.] USN, Postgrad Sch, Monterey, CA USA.
[Montgomery, Michael T.] NOAA, AOML Hurricane Res Div, Miami, FL USA.
RP Terwey, W (reprint author), 307 Univ Blvd N,LSCB 136, Mobile, AL 36688 USA.
EM terwey@usouthal.edu
NR 31
TC 7
Z9 7
U1 0
U2 2
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 MAR
PY 2013
VL 70
IS 3
BP 984
EP 988
DI 10.1175/JAS-D-12-030.1
PG 5
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 101YW
UT WOS:000315811300016
ER
PT J
AU Javaux, C
Mahler, B
Dubertret, B
Shabaev, A
Rodina, AV
Efros, AL
Yakovlev, DR
Liu, F
Bayer, M
Camps, G
Biadala, L
Buil, S
Quelin, X
Hermier, JP
AF Javaux, C.
Mahler, B.
Dubertret, B.
Shabaev, A.
Rodina, A. V.
Efros, Al. L.
Yakovlev, D. R.
Liu, F.
Bayer, M.
Camps, G.
Biadala, L.
Buil, S.
Quelin, X.
Hermier, J-P.
TI Thermal activation of non-radiative Auger recombination in charged
colloidal nanocrystals
SO NATURE NANOTECHNOLOGY
LA English
DT Article
ID CDSE QUANTUM DOTS; SEMICONDUCTOR NANOCRYSTALS; BLINKING; INTERMITTENCY;
EXCITON; SPECTROSCOPY; NANORODS
AB Applications of semiconductor nanocrystals such as biomarkers and light-emitting optoelectronic devices require that their fluorescence quantum yield be close to 100%. However, such quantum yields have not been obtained yet, in part, because non-radiative Auger recombination in charged nanocrystals could not be suppressed completely. Here, we synthesize colloidal core/thick-shell CdSe/CdS nanocrystals with 100% quantum yield and completely quenched Auger processes at low temperatures, although the nanocrystals are negatively photocharged. Single particle and ensemble spectroscopy in the temperature range 30-300 K shows that the non-radiative Auger recombination is thermally activated around 200 K. Experimental results are well described by a model suggesting a temperature-dependent delocalization of one of the trion electrons from the CdSe core and enhanced Auger recombination at the abrupt CdS outer surface. These results point to a route for the design of core/shell structures with 100% quantum yield at room temperature.
C1 [Javaux, C.; Mahler, B.; Dubertret, B.] ESPCI, CNRS, Lab Phys & Etud Mat, F-75231 Paris, France.
[Shabaev, A.] George Mason Univ, Fairfax, VA 22030 USA.
[Rodina, A. V.; Yakovlev, D. R.] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia.
[Efros, Al. L.] USN, Res Lab, Washington, DC 20375 USA.
[Yakovlev, D. R.; Liu, F.; Bayer, M.] TU Dortmund Univ, D-44227 Dortmund, Germany.
[Camps, G.; Biadala, L.; Buil, S.; Quelin, X.; Hermier, J-P.] Univ Versailles St Quentin En Yvelines, CNRS, UMR8635, Grp Etud Mat Condensee, F-78035 Versailles, France.
RP Dubertret, B (reprint author), ESPCI, CNRS, Lab Phys & Etud Mat, 10 Rue Vauquelin, F-75231 Paris, France.
EM benoit.dubertret@espci.fr; sasha.efros@nrl.navy.mil;
hermier@physique.uvsq.fr
RI Mahler, Benoit/O-8592-2016;
OI Mahler, Benoit/0000-0001-5471-5608; Biadala, Louis/0000-0002-1953-9095
FU Office of Naval Research and Alexander-von-Humboldt Foundation; Center
for Advanced 212 Solar Photophysics (CASP); Energy Frontier Research
Center; Agence Nationale de la Recherche; Region Ile-de-France; ESPCI;
Institut Universitaire de France; EU [237252]
FX AI.L.E. acknowledges financial support from the Office of Naval Research
and Alexander-von-Humboldt Foundation. A.S. acknowledges support from
the Center for Advanced 212 Solar Photophysics (CASP), an Energy
Frontier Research Center founded by the Office of Basic Energy Sciences
(OBES), Office of Science (OS), US Department of Energy (US DOE). C.J.,
B.D. and J-P.H. acknowledge support from the Agence Nationale de la
Recherche, and the Region Ile-de-France. B.D. acknowledges support from
the ESPCI and J-P.H acknowledges support from the Institut Universitaire
de France. F.L. and D.R.Y. acknowledge support from the EU Seventh
Framework Programme (grant no. 237252, Spin-optronics). The authors
thank T. Pons, N. Lequeux, E. Cassette, M. Tessier, I. Maksimovic, N.
Bergeal and R. Lobo for stimulating discussions and advice. The authors
are also grateful to Xiangzhen Xu for expert help with TEM measurements.
NR 40
TC 86
Z9 86
U1 8
U2 153
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1748-3387
J9 NAT NANOTECHNOL
JI Nat. Nanotechnol.
PD MAR
PY 2013
VL 8
IS 3
BP 206
EP 212
DI 10.1038/NNANO.2012.260
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA 106OR
UT WOS:000316154900018
PM 23396313
ER
PT J
AU Farjo, AA
Sugar, A
Schallhorn, SC
Majmudar, PA
Tanzer, DJ
Trattler, WB
Cason, JB
Donaldson, KE
Kymionis, GD
AF Farjo, Ayad A.
Sugar, Alan
Schallhorn, Steven C.
Majmudar, Parag A.
Tanzer, David J.
Trattler, William B.
Cason, John B.
Donaldson, Kendall E.
Kymionis, George D.
TI Femtosecond Lasers for LASIK Flap Creation A Report by the American
Academy of Ophthalmology
SO OPHTHALMOLOGY
LA English
DT Article
ID IN-SITU KERATOMILEUSIS; OPTICAL COHERENCE TOMOGRAPHY; TRANSIENT
LIGHT-SENSITIVITY; DIFFUSE LAMELLAR KERATITIS; SUB-BOWMANS
KERATOMILEUSIS; CORNEAL ABERRATION CHANGES; MORIA M2 MICROKERATOME; 80
EXCIMER-LASER; HUMAN DONOR EYES; MECHANICAL-MICROKERATOME
AB Objective: To review the published literature to assess the safety, efficacy, and predictability of femtosecond lasers for the creation of corneal flaps for LASIK; to assess the reported outcomes of LASIK when femtosecond lasers are used to create corneal flaps; and to compare the differences in outcomes between femtosecond lasers and mechanical microkeratomes.
Methods: Literature searches of the PubMed and Cochrane Library databases were last conducted on October 12, 2011, without language or date limitations. The searches retrieved a total of 636 references. Of these, panel members selected 58 articles that they considered to be of high or medium clinical relevance, and the panel methodologist rated each article according to the strength of evidence. Four studies were rated as level I evidence, 14 studies were rated as level II evidence, and the remaining studies were rated as level III evidence.
Results: The majority of published studies evaluated a single laser platform. Flap reproducibility varied by device and the generation of the device. Standard deviations in flap thicknesses ranged from 4 to 18.4 mu m. Visual acuities and complications reported with LASIK flaps created using femtosecond lasers are within Food and Drug Administration safety and efficacy limits. Of all complications, diffuse lamellar keratitis is the most common after surgery but is generally mild and self-limited. Corneal sensation was reported to normalize by 1 year after surgery. Unique complications of femtosecond lasers included transient light-sensitivity syndrome, rainbow glare, opaque bubble layer, epithelial breakthrough of gas bubbles, and gas bubbles within the anterior chamber.
Conclusions: Available evidence (levels I and II) indicates that femtosecond lasers are efficacious devices for creating LASIK flaps, with accompanying good visual results. Overall, femtosecond lasers were found to be as good as or better than mechanical microkeratomes for creating LASIK flaps. There are unique complications that can occur with femtosecond lasers, and long-term follow-up is needed to evaluate the technology fully.
Financial Disclosure(s): Proprietary or commercial disclosure may be found after the references. Ophthalmology 2013;120: e5-e20 (C) 2013 by the American Academy of Ophthalmology.
C1 [Farjo, Ayad A.] Brighton Vis Ctr, Brighton, MI USA.
[Sugar, Alan] Univ Michigan, WK Kellogg Eye Ctr, Ann Arbor, MI USA.
[Schallhorn, Steven C.] Univ Calif San Francisco, San Francisco, CA 94143 USA.
[Schallhorn, Steven C.; Tanzer, David J.] Gordon Weiss Schanzlin Vis Inst, San Diego, CA USA.
[Majmudar, Parag A.] Chicago Cornea Consultants Ltd, Chicago, IL USA.
[Trattler, William B.] Ctr Excellence Eye Care, Miami, FL USA.
[Cason, John B.] USN, Med Ctr, Ophthalmol Clin, San Diego, CA 92152 USA.
[Donaldson, Kendall E.] Bascom Palmer Eye Inst Plantat, Plantation, FL USA.
[Kymionis, George D.] Univ Crete, Fac Med, IVO, Iraklion, Crete, Greece.
RP Farjo, AA (reprint author), Care of Collins N, Amer Acad Ophthalmol, POB 7424, San Francisco, CA 94120 USA.
EM ncollins@aao.org
FU American Academy of Ophthalmology
FX Funded without commercial support by the American Academy of
Ophthalmology.
NR 81
TC 41
Z9 42
U1 3
U2 23
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0161-6420
J9 OPHTHALMOLOGY
JI Ophthalmology
PD MAR
PY 2013
VL 120
IS 3
BP E5
EP E20
DI 10.1016/j.ophtha.2012.08.013
PG 16
WC Ophthalmology
SC Ophthalmology
GA 100XJ
UT WOS:000315738200001
PM 23174396
ER
PT J
AU Holmes, JR
AF Holmes, James R.
TI ASIAN MARITIME POWER IN THE 21ST CENTURY: Strategic Transactions: China,
India and Southeast Asia
SO PACIFIC AFFAIRS
LA English
DT Book Review
C1 [Holmes, James R.] USN, War Coll, Newport, RI USA.
RP Holmes, JR (reprint author), USN, War Coll, Newport, RI USA.
NR 1
TC 0
Z9 0
U1 0
U2 2
PU PACIFIC AFFAIRS UNIV BRITISH COLUMBIA
PI VANCOUVER
PA #164-1855 WEST MALL, VANCOUVER, BC V6T 1Z2, CANADA
SN 0030-851X
J9 PAC AFF
JI Pac. Aff.
PD MAR
PY 2013
VL 86
IS 1
BP 118
EP 120
PG 3
WC Area Studies
SC Area Studies
GA 098GS
UT WOS:000315537500007
ER
PT J
AU Chamberlain, LJ
Wu, S
Lewis, G
Graff, N
Javier, JR
Park, JSR
Johnson, CL
Woods, SD
Patel, M
Wong, D
Blaschke, GS
Lerner, M
Kuo, AK
AF Chamberlain, Lisa J.
Wu, Susan
Lewis, Gena
Graff, Nancy
Javier, Joyce R.
Park, Joseph S. R.
Johnson, Christine L.
Woods, Steven D.
Patel, Mona
Wong, Daphne
Blaschke, Gregory S.
Lerner, Marc
Kuo, Anda K.
CA Calif Community Pediat Legislative
TI A Multi-Institutional Medical Educational Collaborative: Advocacy
Training in California Pediatric Residency Programs
SO ACADEMIC MEDICINE
LA English
DT Article
ID COMMUNITY PEDIATRICS; INTERNAL-MEDICINE; CHILD HEALTH; CONSORTIA; CARE;
DIRECTORS; OUTCOMES
AB Educational collaboratives offer a promising approach to disseminate educational resources and provide faculty development to advance residents' training, especially in areas of novel curricular content; however, their impact has not been clearly described. Advocacy training is a recently mandated requirement of the Accreditation Council for Graduate Medical Education that many programs struggle to meet.
The authors describe the formation (in 2007) and impact (from 2008 to 2010) of 13 California pediatric residency programs working in an educational collaboration ("the Collaborative") to improve advocacy training. The Collaborative defined an overarching mission, assessed the needs of the programs, and mapped their strengths. The infrastructure required to build the collaboration among programs included a social networking site, frequent conference calls, and face-to-face semiannual meetings. An evaluation of the Collaborative's activities showed that programs demonstrated increased uptake of curricular components and an increase in advocacy activities. The themes extracted from semistructured interviews of lead faculty at each program revealed that the Collaborative (1) reduced faculty isolation, increased motivation, and strengthened faculty academic development, (2) enhanced identification of curricular areas of weakness and provided curricular development from new resources, (3) helped to address barriers of limited resident time and program resources, and (4) sustained the Collaborative's impact even after formal funding of the program had ceased through curricular enhancement, the need for further resources, and a shared desire to expand the collaborative network.
C1 [Chamberlain, Lisa J.] Stanford Univ, Dept Pediat, Sch Med, Stanford, CA 94305 USA.
[Wu, Susan; Javier, Joyce R.; Patel, Mona] Univ So Calif, Keck Sch Med, Dept Pediat, Los Angeles, CA 90033 USA.
[Wu, Susan; Javier, Joyce R.; Patel, Mona] Childrens Hosp Los Angeles, Los Angeles, CA 90027 USA.
[Lewis, Gena] Childrens Hosp, Oakland, CA 94609 USA.
[Lewis, Gena] Res Ctr Oakland, Oakland, CA USA.
[Graff, Nancy] Univ Calif San Diego, Dept Pediat, San Diego, CA 92103 USA.
[Graff, Nancy] Rady Childrens Hosp, San Diego, CA USA.
[Park, Joseph S. R.] Prevent Res Ctr, Berkeley, CA USA.
[Johnson, Christine L.; Blaschke, Gregory S.] USN, Dept Pediat, Med Ctr, San Diego, CA 92152 USA.
[Woods, Steven D.] Univ Calif Los Angeles, Dept Pediat, Los Angeles, CA 90024 USA.
[Woods, Steven D.] Kaiser Los Angeles Med Ctr, Los Angeles, CA USA.
[Wong, Daphne; Lerner, Marc] Childrens Hosp Orange Cty, Orange, CA 92668 USA.
[Blaschke, Gregory S.] Oregon Hlth & Sci Univ, Portland, OR 97201 USA.
[Lerner, Marc] Orange Cty Dept Educ, Orange, CA USA.
[Lerner, Marc] Univ Calif Irvine, Dept Pediat, Irvine, CA 92717 USA.
[Kuo, Anda K.] Univ Calif San Francisco, Dept Pediat, San Francisco, CA USA.
RP Chamberlain, LJ (reprint author), Stanford Univ, Sch Med, 770 Welch Rd,100, Palo Alto, CA 94304 USA.
EM lchamberlain@stanford.edu
FU California Endowment
FX The program described in this article was funded by the California
Endowment.
NR 32
TC 7
Z9 7
U1 1
U2 7
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1040-2446
J9 ACAD MED
JI Acad. Med.
PD MAR
PY 2013
VL 88
IS 3
BP 314
EP 321
DI 10.1097/ACM.0b013e3182806291
PG 8
WC Education, Scientific Disciplines; Health Care Sciences & Services
SC Education & Educational Research; Health Care Sciences & Services
GA 098CJ
UT WOS:000315522600015
PM 23348081
ER
PT J
AU Howley, ET
Baldwin, A
Rippe, JM
AF Howley, Edward T.
Baldwin, Andrew
Rippe, James M.
TI SUMMIT SPEAKERS Getting to Know the 2013 Keynoters for ACSM's Health &
Fitness Summit & Exposition
SO ACSMS HEALTH & FITNESS JOURNAL
LA English
DT Editorial Material
C1 USS Makin Isl, San Diego, CA USA.
[Baldwin, Andrew] USN, Bur Med & Surg, Washington, DC USA.
[Rippe, James M.] Univ Cent Florida, Orlando, FL 32816 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1091-5397
J9 ACSMS HEALTH FIT J
JI ACSMS Health Fit. J.
PD MAR-APR
PY 2013
VL 17
IS 2
BP 21
EP 26
DI 10.1249/FIT.0b013e318282a69d
PG 6
WC Sport Sciences
SC Sport Sciences
GA 096MS
UT WOS:000315409000006
ER
PT J
AU Heath, SK
Bard, JF
Morrice, DJ
AF Heath, Susan K.
Bard, Jonathan F.
Morrice, Douglas J.
TI A GRASP for simultaneously assigning and sequencing product families on
flexible assembly lines
SO ANNALS OF OPERATIONS RESEARCH
LA English
DT Article
DE GRASP; Production sequencing; Nearly orthogonal Latin hypercubes;
Nonlinear integer programming
ID MANUFACTURER; ASSIGNMENT; ALGORITHM; COSTS
AB This paper introduces a new model and solution methodology for a real-world production scheduling problem arising in the electronics industry. The production environment is a high volume, just-in-time, make-to-order facility with volatile demand over many product families that are assembled on flexible lines. A distinguishing characteristic of the problem is the presence of non-traditional sequence-dependant setup costs, which complicate our ability to find high-quality solutions. The scheduling problem arose when product variety exceeded the mix that the existing lines could accommodate. A nonlinear integer programming formulation is presented for the problem of minimizing setup costs, and a greedy randomized adaptive search procedure (GRASP) is developed to find solutions. To select the GRASP parameter values, an efficient, space-filling experimental design method is used based on nearly orthogonal Latin hypercubes. The proposed methodology is tested on actual factory data and compared to a prior heuristic presented in the literature; our heuristic provides a cost savings in 7 out of the 10 cases examined, and an average improvement of 17.39 % which is shown to be highly statistically significant. This improvement is due in part to the introduction of a pre-processing step to determine preferential and non-preferential line assignment information.
C1 [Heath, Susan K.] USN, Postgrad Sch, Monterey, CA 93943 USA.
[Bard, Jonathan F.] Univ Texas Austin, Grad Program Operat Res & Ind Engn, Austin, TX 78712 USA.
[Morrice, Douglas J.] Univ Texas Austin, McCombs Sch Business, Austin, TX 78712 USA.
RP Heath, SK (reprint author), USN, Postgrad Sch, 555 Dyer Rd,IN-233, Monterey, CA 93943 USA.
EM skheath@nps.edu
NR 22
TC 0
Z9 0
U1 1
U2 16
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0254-5330
J9 ANN OPER RES
JI Ann. Oper. Res.
PD MAR
PY 2013
VL 203
IS 1
BP 295
EP 323
DI 10.1007/s10479-012-1167-5
PG 29
WC Operations Research & Management Science
SC Operations Research & Management Science
GA 095RW
UT WOS:000315353300015
ER
PT J
AU Denning, PJ
AF Denning, Peter J.
TI Moods, Wicked Problems, and Learning
SO COMMUNICATIONS OF THE ACM
LA English
DT Editorial Material
C1 USN, Cebrowski Inst Informat Innovat, Postgrad Sch Monterey, Monterey, CA 93943 USA.
RP Denning, PJ (reprint author), USN, Cebrowski Inst Informat Innovat, Postgrad Sch Monterey, Monterey, CA 93943 USA.
EM pjd@nps.edu
NR 3
TC 2
Z9 2
U1 0
U2 3
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 0001-0782
J9 COMMUN ACM
JI Commun. ACM
PD MAR
PY 2013
VL 56
IS 3
BP 30
EP 32
DI 10.1145/2428556.2428566
PG 3
WC Computer Science, Hardware & Architecture; Computer Science, Software
Engineering; Computer Science, Theory & Methods
SC Computer Science
GA 096ON
UT WOS:000315414200014
ER
PT J
AU Dees, RA
Nestler, ST
Kewley, R
AF Dees, Robert A.
Nestler, Scott T.
Kewley, Robert
TI WholeSoldier Performance Appraisal to Support Mentoring and Personnel
Decisions
SO DECISION ANALYSIS
LA English
DT Article
DE value-focused thinking; performance appraisal; mentoring; personnel
decisions; applications: military; practice
ID BALANCED SCORECARD
AB We present a multiattribute model called Whole Soldier Performance that measures the performance of junior enlisted soldiers in the U.S. Army; currently there is no formal performance appraisal system in place. The application is unique to decision analysis in that we utilize a common constructed scale and single-dimensional value function for all attributes to match the natural framework of model users and based on operability concerns. Additionally, we discuss model validation in both the terms of decision analysis and psychometrics in models that are used for repeated or routine assessments and thus generate significant quantities of data. We highlight visualization of data for use to support mentoring and personnel decisions to better train, assign, retain, promote, and separate current personnel. Last, we address common cultural concerns related to performance appraisals in organizations by offering a method to standardize ratings and hold raters accountable for their responsibility to mentor subordinates as well as identify their performance to the larger organization.
C1 [Dees, Robert A.] Univ Texas Austin, McCombs Sch Business, Austin, TX 78712 USA.
[Nestler, Scott T.] USN, Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.
[Kewley, Robert] US Mil Acad, Dept Syst Engn, West Point, NY 10996 USA.
RP Dees, RA (reprint author), Univ Texas Austin, McCombs Sch Business, Austin, TX 78712 USA.
EM rob.dees@utexas.edu; scott.nestler@gmail.com; robert.kewley@usma.edu
NR 29
TC 2
Z9 2
U1 1
U2 18
PU INFORMS
PI HANOVER
PA 7240 PARKWAY DR, STE 310, HANOVER, MD 21076-1344 USA
SN 1545-8490
J9 DECIS ANAL
JI Decis. Anal.
PD MAR
PY 2013
VL 10
IS 1
BP 82
EP 97
DI 10.1287/deca.1120.0263
PG 16
WC Management
SC Business & Economics
GA 098HJ
UT WOS:000315539600006
ER
PT J
AU Hofmeister, EP
AF Hofmeister, Eric P.
TI The Hand in Art: Remembering the Hand Surgery Profession While in
Western Europe
SO JOURNAL OF HAND SURGERY-AMERICAN VOLUME
LA English
DT Editorial Material
C1 USN, Dept Orthoped Surg, Med Ctr San Diego, San Diego, CA 92134 USA.
RP Hofmeister, EP (reprint author), USN, Dept Orthoped Surg, Med Ctr San Diego, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
EM hofmeistere@gmail.com
NR 0
TC 0
Z9 0
U1 0
U2 0
PU W B SAUNDERS CO-ELSEVIER INC
PI PHILADELPHIA
PA 1600 JOHN F KENNEDY BOULEVARD, STE 1800, PHILADELPHIA, PA 19103-2899 USA
SN 0363-5023
J9 J HAND SURG-AM
JI J. Hand Surg.-Am. Vol.
PD MAR
PY 2013
VL 38A
IS 3
BP 563
EP 563
DI 10.1016/j.jhsa.2012.12.034
PG 1
WC Orthopedics; Surgery
SC Orthopedics; Surgery
GA 099XW
UT WOS:000315660200022
ER
PT J
AU Penano, JR
Gordon, DF
Hafizi, B
AF Penano, Joseph R.
Gordon, Daniel F.
Hafizi, Bahman
TI Generation of mid-IR and visible radiation from four-wave amplification
of ultrashort laser pulses in transparent dielectrics
SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
LA English
DT Article
ID OPTICAL PARAMETRIC-AMPLIFIER; MIDINFRARED PULSES; FEMTOSECOND; FIBERS;
LIGHT
AB We analyze and simulate the generation of mid-IR radiation from the propagation of bichromatic laser pulses in transparent, centrosymmetric dielectrics. The process relies on using the beatwave associated with the bichromatic pulse to seed four-wave parametric amplification in the mid-IR. We derive propagation equations describing the evolution of the pump waves and scattered waves including the effects of third-order nonlinearity, dispersion, and finite laser spot size. An expression for the growth rate of the scattered waves due to four-wave mixing is derived in the limit of negligible pump depletion and is characterized for various transparent dielectric materials. For fused silica, it is found that a bichromatic pump with wavelengths near 1 mu m can generate forward-directed radiation near 3 mu m. Fully explicit particle-in-cell modeling shows exponential growth and high conversion efficiency to mid-IR and visible radiation when the beat-wave-generated frequency comb is tuned to overlap the gain band of the four-wave amplification process.
C1 [Penano, Joseph R.; Gordon, Daniel F.; Hafizi, Bahman] USN, Div Plasma Phys, Res Lab, Washington, DC 20375 USA.
RP Penano, JR (reprint author), USN, Div Plasma Phys, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM joseph.penano@nrl.navy.mil
FU U.S. Naval Research Laboratory
FX The authors thank Dr. Antonio Ting and Dr. Michael Helle for useful
discussions. This work is supported by U.S. Naval Research Laboratory
6.1 funding.
NR 19
TC 0
Z9 0
U1 1
U2 21
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0740-3224
J9 J OPT SOC AM B
JI J. Opt. Soc. Am. B-Opt. Phys.
PD MAR
PY 2013
VL 30
IS 3
BP 708
EP 716
PG 9
WC Optics
SC Optics
GA 099EO
UT WOS:000315603400032
ER
PT J
AU Manheimer, W
AF Manheimer, Wallace
TI The velocity dependent Krook model to calculate energetic electron
transport in a laser produced plasma
SO LASER AND PARTICLE BEAMS
LA English
DT Article
ID HYDRODYNAMICS; SIMULATIONS; CONDUCTION; IMPLOSION
AB Energetic electrons, with energy from many tens to several hundred keV can be generated in laser produced plasmas by such laser plasma instabilities as the 2 omega(p) instability, which occurs at the quarter critical density. It is important to know not only how these are produced, but also how they are transported and deposit their energy in the interior and whether they preheat the fuel. We introduce the velocity dependent Krook approach to this problem, and compare it to other approaches that have appeared in the literature as regards accuracy and economy of incorporating in a fluid simulation. This velocity dependent Krook technique is reasonably accurate and reasonably simple and economical to incorporate into a fluid simulation.
C1 [Manheimer, Wallace] USN, Laser Plasma Branch, Div Plasma Phys, Res Lab, Washington, DC 20375 USA.
[Manheimer, Wallace] Res Support Instruments, Lanham, MD USA.
RP Manheimer, W (reprint author), USN, Laser Plasma Branch, Div Plasma Phys, Res Lab, Washington, DC 20375 USA.
EM wallymanheimer@yahoo.com
FU NNSA; Research Support Instruments, Lanham, Maryland [N00173-06-C-2049]
FX This work was supported by NNSA. The work was done at the Research
Support Instruments, Lanham, Maryland, contract number N00173-06-C-2049,
in support to the Laser Plasma Branch at Naval Research Laboratory. The
author thanks Denis Colombant for a number of very helpful discussions.
NR 30
TC 2
Z9 2
U1 0
U2 2
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0263-0346
EI 1469-803X
J9 LASER PART BEAMS
JI Laser Part. Beams
PD MAR
PY 2013
VL 31
IS 1
BP 95
EP 104
DI 10.1017/S0263034612000730
PG 10
WC Physics, Applied
SC Physics
GA 096DJ
UT WOS:000315383900013
ER
PT J
AU O'Brien, T
AF O'Brien, Timothy
TI TAKING THE CALF TO MARKET IN ROBERT FROST'S "THE PASTURE"
SO NEW ENGLAND QUARTERLY-A HISTORICAL REVIEW OF NEW ENGLAND LIFE AND
LETTERS
LA English
DT Article
C1 USN Acad, Annapolis, MD 21402 USA.
RP O'Brien, T (reprint author), USN Acad, Annapolis, MD 21402 USA.
NR 36
TC 1
Z9 1
U1 0
U2 0
PU NEW ENGLAND QUARTERLY INC
PI BOSTON
PA MESERVE HALL 243 NORTHEASTERN UNIV 360 HUNTINGTON AVE, BOSTON, MA 02115
USA
SN 0028-4866
J9 NEW ENGL QUART
JI New Engl. Q.-Hist. Rev. New Engl. Life Lett.
PD MAR
PY 2013
VL 86
IS 1
BP 125
EP 136
PG 12
WC History; Literature, American
SC History; Literature
GA 098GM
UT WOS:000315536800006
ER
PT J
AU Hessert, MJ
Bennett, BL
AF Hessert, M. Josephine
Bennett, Brad L.
TI Optimizing Emergent Surgical Cricothyrotomy for use in Austere
Environments
SO WILDERNESS & ENVIRONMENTAL MEDICINE
LA English
DT Review
DE cricothyroidotomy; cricothyrotomy; airway; austere environment;
battlefield; prehospital
ID RAPID 4-STEP TECHNIQUE; OPERATION-ENDURING-FREEDOM; DIFFICULT-AIRWAY;
GUIDED CRICOTHYROTOMY; CLINICAL ANATOMY; MEDICAL-SERVICE; TRAUMA
PATIENTS; IRAQI-FREEDOM; GLOBAL WAR; CRICOTHYROIDOTOMY
AB Emergent cricothyrotomy is an infrequently performed procedure used in the direst of circumstances on the most severely injured patients. Austere environments present further unique challenges to effective emergency medical practice. Recently, military trauma registry data were searched for the frequency of cricothyrotomy use and success rates during a 22-month period. These data revealed that cricothyrotomy performed in the most rigorous austere environment (ie, battlefield) had many successes, but also a large number of failed (33%) attempts by medics owing to many factors. Thus, the aim of this review article is to present what is known about cricothyrotomy and apply this knowledge to any austere environment for qualified providers. The National Library of Medicine's PubMed was used to conduct a thorough search using the terms "prehospital," "cricothyroidotomy," "cricothyrotomy," and "surgical airway." The findings were further narrowed by applicability to the austere environment. This review presents relevant airway anatomy, incidences, indications, contraindications, procedures, and equipment, including improvised devices, success rates, complications, and training methods. Recommendations are proffered for ways to optimize procedures, equipment, and training for successful application of this emergent skill set in the austere environment.
C1 [Hessert, M. Josephine] USN, Dept Emergency Med, Med Ctr Portsmouth, Portsmouth, VA USA.
[Bennett, Brad L.] Uniformed Serv Univ Hlth Sci, F Edward Hebert Sch Med, Dept Mil & Emergency Med, Bethesda, MD 20814 USA.
RP Bennett, BL (reprint author), POB 235, Bena, VA 23018 USA.
EM dr.blbennett@gmail.com
NR 105
TC 7
Z9 7
U1 1
U2 5
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1080-6032
EI 1545-1534
J9 WILD ENVIRON MED
JI Wildern. Environ. Med.
PD SPR
PY 2013
VL 24
IS 1
BP 53
EP 66
PG 14
WC Public, Environmental & Occupational Health; Sport Sciences
SC Public, Environmental & Occupational Health; Sport Sciences
GA 097KP
UT WOS:000315473300013
PM 23062323
ER
PT J
AU Brown, ME
Silver, KC
Rajagopalan, K
AF Brown, Molly E.
Silver, Kirk C.
Rajagopalan, Krishnan
TI A city and national metric measuring isolation from the global market
for food security assessment
SO APPLIED GEOGRAPHY
LA English
DT Article
DE Transportation; Food security; Global market; Index; Economics
ID AGRICULTURE; POVERTY
AB The World Bank has invested in infrastructure in developing countries for decades. This investment aims to reduce the isolation of markets, reducing both seasonality and variability in food availability and food prices. Here we combine city market price data, global distance to port, and country infrastructure data to create a new Isolation Index for countries and cities around the world. Our index quantifies the isolation of a city from the global market. We demonstrate that an index built at the country level can be applied at a sub-national level to quantify city isolation. In doing so, we offer policy makers with an alternative metric to assess food insecurity. We compare our isolation index with other indices and economic data found in the literature. We show that our Index measures economic isolation regardless of economic stability using correlation and analysis. Published by Elsevier Ltd.
C1 [Brown, Molly E.] NASA, Goddard Space Flight Ctr, Biospher Sci Lab, Greenbelt, MD 20771 USA.
[Silver, Kirk C.] Univ Rhode Isl, Coll Environm & Life Sci, Coastal Inst MESM 106, Kingston, RI 02881 USA.
[Rajagopalan, Krishnan] USN Acad, Dept Math, Annapolis, MD 21402 USA.
RP Brown, ME (reprint author), NASA, Goddard Space Flight Ctr, Biospher Sci Lab, Code 618, Greenbelt, MD 20771 USA.
EM molly.brown@nasa.gov
RI Brown, Molly/E-2724-2010
OI Brown, Molly/0000-0001-7384-3314
NR 34
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 0143-6228
J9 APPL GEOGR
JI Appl. Geogr.
PD MAR
PY 2013
VL 38
BP 119
EP 128
DI 10.1016/j.apgeog.2012.11.015
PG 10
WC Geography
SC Geography
GA 094FI
UT WOS:000315248000012
ER
PT J
AU Hsieh, WWS
AF Hsieh, Wayne Wei-siang
TI The Civil War in the East: Struggle, Stalemate, and Victory
SO CIVIL WAR HISTORY
LA English
DT Book Review
C1 [Hsieh, Wayne Wei-siang] USN Acad, Annapolis, MD 21402 USA.
RP Hsieh, WWS (reprint author), USN Acad, Annapolis, MD 21402 USA.
NR 1
TC 0
Z9 0
U1 0
U2 1
PU KENT STATE UNIV PRESS
PI KENT
PA C/O JOURNALS DEPT, KENT, OH 44242 USA
SN 0009-8078
J9 CIVIL WAR HIST
JI Civil War Hist.
PD MAR
PY 2013
VL 59
IS 1
BP 102
EP 104
PG 3
WC History
SC History
GA 094DZ
UT WOS:000315244500007
ER
PT J
AU Burstedde, C
Stadler, G
Alisic, L
Wilcox, LC
Tan, E
Gurnis, M
Ghattas, O
AF Burstedde, Carsten
Stadler, Georg
Alisic, Laura
Wilcox, Lucas C.
Tan, Eh
Gurnis, Michael
Ghattas, Omar
TI Large-scale adaptive mantle convection simulation
SO GEOPHYSICAL JOURNAL INTERNATIONAL
LA English
DT Article
DE Numerical solutions; Mantle processes; Dynamics: convection currents;
and mantle plumes
ID TEMPERATURE-DEPENDENT VISCOSITY; FINITE-ELEMENT-METHOD; STOKES-FLOW
PROBLEMS; SPHERICAL-SHELL; VARIABLE-VISCOSITY; ERROR ESTIMATION; MESH
REFINEMENT; PARALLEL; EQUATIONS; ALGORITHMS
AB A new generation, parallel adaptive-mesh mantle convection code, Rhea, is described and benchmarked. Rhea targets large-scale mantle convection simulations on parallel computers, and thus has been developed with a strong focus on computational efficiency and parallel scalability of both mesh handling and numerical solvers. Rhea builds mantle convection solvers on a collection of parallel octree-based adaptive finite element libraries that support new distributed data structures and parallel algorithms for dynamic coarsening, refinement, rebalancing and repartitioning of the mesh. In this study we demonstrate scalability to 122 880 compute cores and verify correctness of the implementation. We present the numerical approximation and convergence properties using 3-D benchmark problems and other tests for variable-viscosity Stokes flow and thermal convection.
C1 [Burstedde, Carsten; Stadler, Georg; Wilcox, Lucas C.; Ghattas, Omar] Univ Texas Austin, ICES, Austin, TX 78712 USA.
[Burstedde, Carsten] Univ Bonn, Inst Numer Simulat, Bonn, Germany.
[Alisic, Laura; Gurnis, Michael] CALTECH, Seismol Lab, Pasadena, CA 91125 USA.
[Alisic, Laura] Univ Cambridge, Bullard Labs, Cambridge, England.
[Wilcox, Lucas C.] USN, Postgrad Sch, Dept Appl Math, Monterey, CA USA.
[Tan, Eh] CIG, Pasadena, CA USA.
[Tan, Eh] Acad Sinica, Inst Earth Sci, Taipei, Taiwan.
[Ghattas, Omar] Univ Texas Austin, Jackson Sch Geosci, Austin, TX 78712 USA.
[Ghattas, Omar] Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA.
RP Burstedde, C (reprint author), Univ Texas Austin, ICES, Austin, TX 78712 USA.
EM burstedde@ins.uni-bonn.de
RI Tan, Eh/N-8320-2013
FU NSF PetaApps program [OCI-0749334, OCI-0748898]; NSF CDI program
[CMMI-1028889, CMMI-1028978]; DOE Office of Science [DE-FC02-06ER25782,
DE-SC0002710]; Caltech Tectonics Observatory; Gordon and Betty Moore
Foundation; [EAR-0426271]; [EAR-0810303]; [DMS-072474]
FX The authors would like to thank Shijie Zhong for discussion and
feedback. The NSF PetaApps program (OCI-0749334, OCI-0748898), the NSF
CDI program (CMMI-1028889, CMMI-1028978), TeraGrid allocation
(TG-MCA04N026) and further grants (EAR-0426271, EAR-0810303, DMS-072474)
are gratefully acknowledged, as well as funding by the DOE Office of
Science (DE-FC02-06ER25782, DE-SC0002710) and support by the Caltech
Tectonics Observatory (by the Gordon and Betty Moore Foundation). The
Texas Advanced Computing Center (TACC) and Oak Ridge National
Laboratories provided outstanding help and support for our use of the
Ranger and Jaguar supercomputers, respectively.
NR 49
TC 16
Z9 16
U1 3
U2 28
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0956-540X
EI 1365-246X
J9 GEOPHYS J INT
JI Geophys. J. Int.
PD MAR
PY 2013
VL 192
IS 3
BP 889
EP 906
DI 10.1093/gji/ggs070
PG 18
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 091LP
UT WOS:000315051300001
ER
PT J
AU Milton, GB
AF Milton, Gregory B.
TI The transition from ecclesiastical scribania to professional notariate
in Santa Coloma de Queralt
SO JOURNAL OF MEDIEVAL HISTORY
LA English
DT Article
DE notary; scribania; commerce; Crown of Aragon; Catalonia
AB Commerce and notarial writing were closely related activities for the Mediterranean world of the thirteenth century, and both were integral to rural commercial communities by the last decades of the century. The transformation of the scribania of Santa Coloma de Queralt from proto-notarial to professional notarial institution during the second half of the thirteenth century demonstrates the changes in the process of written documentation and the growth of commercial activity as sophisticated economic and political development occurred in many areas of rural Catalonia. The professional notarial scribes of the period provided administrative services in many different arenas, but more significantly provided a reliable means accurate, flexible and legal of monitoring the commercial transactions they recorded for their customers. The value of professional notarial writing helped create and further the increased commercial activity of the period within the Crown of Aragon. While scholars have long considered this process in major urban centres, it was also a significant factor for rural communities in Catalonia, which utilised and benefited from regular access to professional writing for the necessities of daily life.
C1 [Milton, Gregory B.] USN, Stennis Space Ctr, MS USA.
[Milton, Gregory B.] USN Acad, Annapolis, MD 21402 USA.
[Milton, Gregory B.] Marquette Univ, Milwaukee, WI 53233 USA.
[Milton, Gregory B.] Univ S Florida, Tampa, FL 33620 USA.
EM gbmhistory@gmail.com
NR 26
TC 1
Z9 1
U1 0
U2 0
PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXFORDSHIRE, ENGLAND
SN 0304-4181
J9 J MEDIEVAL HIST
JI J. Mediev. Hist.
PD MAR 1
PY 2013
VL 39
IS 1
BP 1
EP 19
DI 10.1080/03044181.2012.738787
PG 19
WC Medieval & Renaissance Studies
SC Arts & Humanities - Other Topics
GA 092HU
UT WOS:000315112000001
ER
PT J
AU Wang, LB
Tao, J
Xiao, CS
Yang, TC
AF Wang, Longbao
Tao, Jun
Xiao, Chengshan
Yang, T. C.
TI Low-complexity turbo detection for single-carrier low-density
parity-check-coded multiple-input multiple-output underwater acoustic
communications
SO WIRELESS COMMUNICATIONS & MOBILE COMPUTING
LA English
DT Article
DE turbo detection; frequency-domain equalization; underwater acoustic
communication
ID FREQUENCY-DOMAIN EQUALIZATION; CHANNELS
AB A low-complexity turbo detection scheme is proposed for single-carrier multiple-input multiple-output (MIMO) underwater acoustic (UWA) communications using low-density parity-check (LDPC) channel coding. The low complexity of the proposed detection algorithm is achieved in two aspects: first, the frequency-domain equalization technique is adopted, and it maintains a low complexity irrespective of the highly dispersive UWA channels; second, the computation of the soft equalizer output, in the form of extrinsic log-likelihood ratio, is performed with an approximating method, which further reduces the complexity. Moreover, attributed to the LDPC decoding, the turbo detection converges within only a few iterations. The proposed turbo detection scheme has been used for processing real-world data collected in two different undersea trials: WHOI09 and ACOMM09. Experimental results show that it provides robust detection for MIMO UWA communications with different modulations and different symbol rates, at different transmission ranges. Copyright (c) 2011 John Wiley & Sons, Ltd.
C1 [Wang, Longbao; Tao, Jun; Xiao, Chengshan] Missouri Univ Sci & Technol, Dept Elect & Comp Engn, Rolla, MO 65409 USA.
[Yang, T. C.] USN, Res Lab, Washington, DC 20375 USA.
RP Xiao, CS (reprint author), Missouri Univ Sci & Technol, Dept Elect & Comp Engn, Rolla, MO 65409 USA.
EM xiaoc@mst.edu
FU Office of Naval Research [N00014-10-1-0174]; National Science Foundation
[CCF-0915846]
FX This work was supported in part by the Office of Naval Research under
Grant N00014-10-1-0174 and the National Science Foundation under Grant
CCF-0915846. The authors thank Mr. Lee Freitag and Mr. Keenan Ball and
their team for conducting the WHOI09 experiment. L. Wang is grateful to
Dr. Jian Zhang for his helpful discussion.
NR 21
TC 3
Z9 3
U1 0
U2 33
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1530-8669
J9 WIREL COMMUN MOB COM
JI Wirel. Commun. Mob. Comput.
PD MAR
PY 2013
VL 13
IS 4
BP 439
EP 450
DI 10.1002/wcm.1161
PG 12
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA 092EJ
UT WOS:000315101700007
ER
PT J
AU Carbone, PN
Carbone, DL
Carstairs, SD
Luzi, SA
AF Carbone, Peter N.
Carbone, David L.
Carstairs, Shaun D.
Luzi, Scott A.
TI Sudden Cardiac Death Associated With Methylone Use
SO AMERICAN JOURNAL OF FORENSIC MEDICINE AND PATHOLOGY
LA English
DT Article
DE methylone; bath salts; sudden cardiac death; cathinone; toxicity
ID LEGAL HIGHS; CATHINONE; INTERNET; ABUSE
AB The rise in popularity of "bath salts" as safe alternatives to MDMA (3,4-methylenedioxymethamphetamine), methamphetamine, and other illicit substances has resulted in increased scrutiny of the contents and toxicology associated with these products. We report a case of sudden death related to the synthetic cathinone methylone (3,4-methylenedioxy-N-methylcathinonmethylone) in a previously healthy 19-year-old man. Although several fatal case reports have been published involving methylone and other synthetic cathinones, this is the first reported case of sudden cardiac death associated with methylone use. Although lack of published data prevented a comparison of blood methylone concentrations between our case and existing reports, the amount of methylone we detected postmortem (0.07 mg/dL) is below those reported in MDMA-related fatalities. Our report suggests that methylone toxicity has been greatly underestimated by users of this synthetic cathinone.
C1 [Carbone, Peter N.; Luzi, Scott A.] USN, Dept Anat Pathol, San Diego Med Ctr, San Diego, CA 92134 USA.
[Carbone, David L.] Univ Arizona, Coll Med Phoenix, Dept Basic Med Sci, Phoenix, AZ USA.
[Carstairs, Shaun D.] USN, Dept Emergency Med, San Diego Med Ctr, San Diego, CA 92134 USA.
RP Carbone, PN (reprint author), USN, Dept Anat Pathol, San Diego Med Ctr, San Diego, CA 92134 USA.
EM peter.carbone@med.navy.mil
OI Carstairs, Shaun/0000-0003-4558-9704
NR 16
TC 22
Z9 23
U1 1
U2 17
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0195-7910
J9 AM J FOREN MED PATH
JI Am. J. Forensic Med. Pathol.
PD MAR
PY 2013
VL 34
IS 1
BP 26
EP 28
DI 10.1097/PAF.0b013e31827ab5da
PG 3
WC Medicine, Legal; Pathology
SC Legal Medicine; Pathology
GA 089NI
UT WOS:000314916900011
PM 23403480
ER
PT J
AU Lim, AA
Allam, KA
Taneja, R
Kawamoto, HK
AF Lim, Alan A.
Allam, Karam A.
Taneja, Rashmi
Kawamoto, Henry K.
TI Constructing the Philtral Column in the Secondary Cleft Lip Deformity
Utilizing the Palmaris Longus Graft
SO ANNALS OF PLASTIC SURGERY
LA English
DT Article
DE cleft lip; cleft lip revision; palmaris longus; palmaris longus graft;
philtrum; philtral column; secondary cleft lip deformity
ID ORBICULARIS ORIS MUSCLE; RECONSTRUCTION; REPAIR; TENDON; AUGMENTATION;
DIMPLE
AB Background: The philtrum and the Cupid's bow are the most prominent features of the upper lip and are crucial for normal appearance. Unfortunately, projection of the philtral column is a common deficiency of the repaired cleft lip. Although a multitude of methods for constructing the philtral dimple and ridge have been described, no single procedure has achieved complete satisfactory results. The authors describe their technique for construction of the philtral column using palmaris longus tendon.
Methods: Between 1998 and 2009, a retrospective study was performed for identifying patients with depression of the philtral scar following cleft lip repair. Pre- and postoperative photographs were taken with at least 6 months follow-up. Postoperative patient satisfaction and occurrence of complications are reported.
Results: In all, 17 patients who developed depression of the philtral ridge following cleft lip repair underwent philtral reconstruction utilizing palmaris longus tendon grafts by the senior author (H. K. K.). At the time of surgery, average age for 11 females and 6 males was 18.5 years. The follow-up period ranged from 6 to 126 months, with an average of 42.3 months. In the early postoperative period, 2 complications in the form of graft exposure occurred. However, both cases were successfully managed with preservation of the graft. All patients were satisfied with their long-term results, and none required further surgery.
Conclusions: The use of palmaris longus tendon graft is an effective, reproducible, and safe method by which to construct the philtral column in the secondary cleft lip deformity.
C1 [Lim, Alan A.] USN, Med Ctr, Dept Plast & Reconstruct Surg, Portsmouth, VA USA.
[Allam, Karam A.] Sohag Univ Hosp, Dept Plast Surg, Sohag, Egypt.
[Taneja, Rashmi] Fortis Flt Lt Rajan Dhali Hosp, Dept Plast Surg, New Delhi, India.
[Kawamoto, Henry K.] Univ Calif Los Angeles, Div Plast & Reconstruct Surg, Los Angeles, CA USA.
RP Kawamoto, HK (reprint author), Univ Calif Los Angeles, Med Ctr, Div Plast & Reconstruct Surg, 1301 20th St,Suite 460, Santa Monica, CA 90404 USA.
EM kawamoto@ucla.edu
NR 22
TC 2
Z9 2
U1 0
U2 5
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0148-7043
J9 ANN PLAS SURG
JI Ann. Plast. Surg.
PD MAR
PY 2013
VL 70
IS 3
BP 296
EP 300
DI 10.1097/SAP.0b013e3182326ef3
PG 5
WC Surgery
SC Surgery
GA 092BI
UT WOS:000315093400011
PM 23038138
ER
PT J
AU Ackermann, M
Ajello, M
Allafort, A
Asano, K
Atwood, WB
Baldini, L
Ballet, J
Barbiellini, G
Bastieri, D
Bechtol, K
Bellazzini, R
Bloom, ED
Bonamente, E
Borgland, AW
Bottacini, E
Brandt, TJ
Bregeon, J
Brigida, M
Bruel, P
Buehler, R
Burnett, TH
Busetto, G
Buson, S
Caliandro, GA
Cameron, RA
Caraveo, PA
Casandjian, JM
Cecchi, C
Charles, E
Chaty, S
Chekhtman, A
Cheung, CC
Chiang, J
Cillis, AN
Ciprini, S
Claus, R
Cohen-Tanugi, J
Colafrancesco, S
Conrad, J
Cutini, S
D'Ammando, F
de Palma, F
Dermer, CD
Silva, EDE
Drell, S
Drlica-Wagner, A
Dubois, R
Favuzzi, C
Fegan, SJ
Ferrara, EC
Focke, WB
Fortin, P
Fukazawa, Y
Funk, S
Fusco, P
Gargano, F
Gasparrini, D
Gehrels, N
Germani, S
Giglietto, N
Giordano, F
Giroletti, M
Glanzman, T
Godfrey, G
Grandi, P
Grenier, IA
Grove, JE
Guiriec, S
Hadasch, D
Hayashida, M
Hays, E
Horan, D
Hou, X
Hughes, RE
Jackson, MS
Jogler, T
Johannesson, G
Johnson, RP
Johnson, AS
Kamae, T
Kataoka, J
Kerr, M
Knodlseder, J
Kuss, M
Lande, J
Larsson, S
Latronico, L
Lavalley, C
Lee, SH
Longo, F
Loparco, F
Lott, B
Lovellette, MN
Lubrano, P
Mazziotta, MN
McConville, W
McEnery, JE
Mehault, J
Michelson, PF
Mignani, RP
Mitthumsiri, W
Mizuno, T
Moiseev, AA
Monte, C
Monzani, ME
Morselli, A
Moskalenko, IV
Murgia, S
Naumann-Godo, M
Nemmen, R
Nishino, S
Norris, JP
Nuss, E
Ohsugi, T
Omodei, N
Orienti, M
Orlando, E
Ormes, JF
Paneque, D
Panetta, JH
Pelassa, V
Perkins, JS
Pesce-Rollins, M
Pierbattista, M
Piron, F
Pivato, G
Poon, H
Porter, TA
Raino, S
Rando, R
Razzano, M
Razzaque, S
Reimer, A
Reimer, O
Reyes, LC
Ritz, S
Rochester, LS
Romoli, C
Roth, M
Sanchez, DA
Parkinson, PMS
Scargle, JD
Sgro, C
Siskind, EJ
Snyder, A
Spandre, G
Spinelli, P
Stephens, TE
Suson, DJ
Tajima, H
Takahashi, H
Tanaka, T
Thayer, JG
Thayer, JB
Thompson, DJ
Tibaldo, L
Tibolla, O
Tinivella, M
Tosti, G
Troja, E
Usher, TL
Vandenbroucke, J
Vasileiou, V
Vianello, G
Vitale, V
von Kienlin, A
Waite, AP
Wallace, E
Weltevrede, P
Winer, BL
Wood, KS
Wood, M
Yang, Z
Zimmer, S
AF Ackermann, M.
Ajello, M.
Allafort, A.
Asano, K.
Atwood, W. B.
Baldini, L.
Ballet, J.
Barbiellini, G.
Bastieri, D.
Bechtol, K.
Bellazzini, R.
Bloom, E. D.
Bonamente, E.
Borgland, A. W.
Bottacini, E.
Brandt, T. J.
Bregeon, J.
Brigida, M.
Bruel, P.
Buehler, R.
Burnett, T. H.
Busetto, G.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Casandjian, J. M.
Cecchi, C.
Charles, E.
Chaty, S.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Cillis, A. N.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Colafrancesco, S.
Conrad, J.
Cutini, S.
D'Ammando, F.
de Palma, F.
Dermer, C. D.
do Couto e Silva, E.
Drell, S.
Drlica-Wagner, A.
Dubois, R.
Favuzzi, C.
Fegan, S. J.
Ferrara, E. C.
Focke, W. B.
Fortin, P.
Fukazawa, Y.
Funk, S.
Fusco, P.
Gargano, F.
Gasparrini, D.
Gehrels, N.
Germani, S.
Giglietto, N.
Giordano, F.
Giroletti, M.
Glanzman, T.
Godfrey, G.
Grandi, P.
Grenier, I. A.
Grove, J. E.
Guiriec, S.
Hadasch, D.
Hayashida, M.
Hays, E.
Horan, D.
Hou, X.
Hughes, R. E.
Jackson, M. S.
Jogler, T.
Johannesson, G.
Johnson, R. P.
Johnson, A. S.
Kamae, T.
Kataoka, J.
Kerr, M.
Knoedlseder, J.
Kuss, M.
Lande, J.
Larsson, S.
Latronico, L.
Lavalley, C.
Lee, S. -H.
Longo, F.
Loparco, F.
Lott, B.
Lovellette, M. N.
Lubrano, P.
Mazziotta, M. N.
McConville, W.
McEnery, J. E.
Mehault, J.
Michelson, P. F.
Mignani, R. P.
Mitthumsiri, W.
Mizuno, T.
Moiseev, A. A.
Monte, C.
Monzani, M. E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Naumann-Godo, M.
Nemmen, R.
Nishino, S.
Norris, J. P.
Nuss, E.
Ohsugi, T.
Omodei, N.
Orienti, M.
Orlando, E.
Ormes, J. F.
Paneque, D.
Panetta, J. H.
Pelassa, V.
Perkins, J. S.
Pesce-Rollins, M.
Pierbattista, M.
Piron, F.
Pivato, G.
Poon, H.
Porter, T. A.
Raino, S.
Rando, R.
Razzano, M.
Razzaque, S.
Reimer, A.
Reimer, O.
Reyes, L. C.
Ritz, S.
Rochester, L. S.
Romoli, C.
Roth, M.
Sanchez, D. A.
Parkinson, P. M. Saz
Scargle, J. D.
Sgro, C.
Siskind, E. J.
Snyder, A.
Spandre, G.
Spinelli, P.
Stephens, T. E.
Suson, D. J.
Tajima, H.
Takahashi, H.
Tanaka, T.
Thayer, J. G.
Thayer, J. B.
Thompson, D. J.
Tibaldo, L.
Tibolla, O.
Tinivella, M.
Tosti, G.
Troja, E.
Usher, T. L.
Vandenbroucke, J.
Vasileiou, V.
Vianello, G.
Vitale, V.
von Kienlin, A.
Waite, A. P.
Wallace, E.
Weltevrede, P.
Winer, B. L.
Wood, K. S.
Wood, M.
Yang, Z.
Zimmer, S.
TI DETERMINATION OF THE POINT-SPREAD FUNCTION FOR THE FERMI LARGE AREA
TELESCOPE FROM ON-ORBIT DATA AND LIMITS ON PAIR HALOS OF ACTIVE GALACTIC
NUCLEI
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: active; galaxies: halos; gamma rays: galaxies;
instrumentation: detectors; intergalactic medium
ID EXTRAGALACTIC MAGNETIC-FIELDS; VHE GAMMA-RAYS; TEV BLAZARS; BACKGROUND
LIGHT; SPACE-TELESCOPE; SOURCE CATALOG; 1ES 0229+200; PULSAR;
CONSTRAINTS; DISCOVERY
AB The Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope is a pair-conversion telescope designed to detect photons with energies from approximate to 20 MeV to > 300 GeV. The pre-launch response functions of the LAT were determined through extensive Monte Carlo simulations and beam tests. The point-spread function (PSF) characterizing the angular distribution of reconstructed photons as a function of energy and geometry in the detector is determined here from two years of on-orbit data by examining the distributions of gamma rays from pulsars and active galactic nuclei (AGNs). Above 3 GeV, the PSF is found to be broader than the pre-launch PSF. We checked for dependence of the PSF on the class of gamma-ray source and observation epoch and found none. We also investigated several possible spatial models for pair-halo emission around BL Lac AGNs. We found no evidence for a component with spatial extension larger than the PSF and set upper limits on the amplitude of halo emission in stacked images of low-and high-redshift BL Lac AGNs and the TeV blazars 1ES0229 + 200 and 1ES0347-121.
C1 [Ackermann, M.] Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany.
[Ajello, M.; Allafort, A.; Bechtol, K.; Bloom, E. D.; Borgland, A. W.; Bottacini, E.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; do Couto e Silva, E.; Drell, S.; Drlica-Wagner, A.; Dubois, R.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Jogler, T.; Johnson, A. S.; Kamae, T.; Kerr, M.; Lande, J.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Omodei, N.; Orlando, E.; Paneque, D.; Panetta, J. H.; Porter, T. A.; Reimer, A.; Reimer, O.; Rochester, L. S.; Snyder, A.; Tajima, H.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Usher, T. L.; Vandenbroucke, J.; Vianello, G.; Waite, A. P.; Wood, M.] Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA.
[Ajello, M.; Allafort, A.; Bechtol, K.; Bloom, E. D.; Borgland, A. W.; Bottacini, E.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; do Couto e Silva, E.; Drell, S.; Drlica-Wagner, A.; Dubois, R.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Jogler, T.; Johnson, A. S.; Kamae, T.; Kerr, M.; Lande, J.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Omodei, N.; Orlando, E.; Paneque, D.; Panetta, J. H.; Porter, T. A.; Reimer, A.; Reimer, O.; Rochester, L. S.; Snyder, A.; Tajima, H.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Usher, T. L.; Vandenbroucke, J.; Vianello, G.; Waite, A. P.; Wood, M.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Asano, K.] Tokyo Inst Technol, Interact Res Ctr Sci, Meguro, Tokyo 1528551, Japan.
[Atwood, W. B.; Johnson, R. P.; Razzano, M.; Ritz, S.; Parkinson, P. M. Saz] Univ Calif Santa Cruz, Dept Phys, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Atwood, W. B.; Johnson, R. P.; Razzano, M.; Ritz, S.; Parkinson, P. M. Saz] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Baldini, L.; Bellazzini, R.; Bregeon, J.; Kuss, M.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.; Tinivella, M.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Ballet, J.; Casandjian, J. M.; Chaty, S.; Grenier, I. A.; Naumann-Godo, M.; Pierbattista, M.] Univ Paris Diderot, CEA Saclay, Serv Astrophys, Lab AIM,CEA IRFU,CNRS, F-91191 Gif Sur Yvette, France.
[Barbiellini, G.; Longo, F.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Barbiellini, G.; Longo, F.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Bastieri, D.; Busetto, G.; Buson, S.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Bastieri, D.; Busetto, G.; Buson, S.; Pivato, G.; Poon, H.; Rando, R.; Romoli, C.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
[Bonamente, E.; Cecchi, C.; D'Ammando, F.; Germani, S.; Lubrano, P.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy.
[Brandt, T. J.; Knoedlseder, J.] CNRS, IRAP, F-31028 Toulouse 4, France.
[Brandt, T. J.; Knoedlseder, J.] Univ Toulouse, GAHEC, UPS OMP, IRAP, F-31028 Toulouse, France.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Univ Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Bruel, P.; Fegan, S. J.; Fortin, P.; Horan, D.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Burnett, T. H.; Roth, M.; Wallace, E.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Caliandro, G. A.; Hadasch, D.] Inst Ciencies Espai IEEE CSIC, E-08193 Barcelona, Spain.
[Caraveo, P. A.] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy.
[Chekhtman, A.; Razzaque, S.] George Mason Univ, Coll Sci, Ctr Earth Observing & Space Res, Fairfax, VA 22030 USA.
[Cheung, C. C.] Natl Acad Sci, Natl Res Council Res Associate, Washington, DC 20001 USA.
[Cillis, A. N.] Inst Astron & Fis Espacio, Parbellon IAFE, RA-1428 Buenos Aires, DF, Argentina.
[Cillis, A. N.; Ferrara, E. C.; Gehrels, N.; Hays, E.; McConville, W.; McEnery, J. E.; Moiseev, A. A.; Nemmen, R.; Perkins, J. S.; Stephens, T. E.; Thompson, D. J.; Troja, E.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Ciprini, S.] ASI Sci Data Ctr, I-00044 Rome, Italy.
[Cohen-Tanugi, J.; Lavalley, C.; Mehault, J.; Nuss, E.; Piron, F.; Vasileiou, V.] Univ Montpellier 2, CNRS, IN2P3, Lab Univers & Particules Montpellier, F-34095 Montpellier, France.
[Colafrancesco, S.; Cutini, S.; Gasparrini, D.] ASI, Sci Data Ctr, I-00044 Rome, Italy.
[Conrad, J.; Larsson, S.; Yang, Z.; Zimmer, S.] Stockholm Univ, AlbaNova, Dept Phys, SE-10691 Stockholm, Sweden.
[Conrad, J.; Jackson, M. S.; Larsson, S.; Yang, Z.; Zimmer, S.] AlbaNova, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
[D'Ammando, F.] IASF Palermo, I-90146 Palermo, Italy.
[D'Ammando, F.] INAF Ist Astrofis Spaziale & Fis Cosm, I-00133 Rome, Italy.
[Dermer, C. D.; Grove, J. E.; Lovellette, M. N.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Fukazawa, Y.; Nishino, S.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
[Giroletti, M.; Orienti, M.] INAF Ist Radioastron, I-40129 Bologna, Italy.
[Grandi, P.] INAF IASF Bologna, I-40129 Bologna, Italy.
[Guiriec, S.; Pelassa, V.] Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35899 USA.
[Hayashida, M.] Kyoto Univ, Grad Sch Sci, Dept Astron, Sakyo Ku, Kyoto 6068502, Japan.
[Hou, X.; Lott, B.] Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France.
[Hughes, R. E.; Winer, B. L.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Jackson, M. S.] Royal Inst Technol KTH, AlbaNova, Dept Phys, SE-10691 Stockholm, Sweden.
[Johannesson, G.] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland.
[Kataoka, J.] Waseda Univ, Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan.
[Larsson, S.] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden.
[Latronico, L.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Lee, S. -H.] Kyoto Univ, Yukawa Inst Theoret Phys, Sakyo Ku, Kyoto 6068502, Japan.
[McConville, W.; McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
[McConville, W.; McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[Mignani, R. P.] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.
[Mizuno, T.; Ohsugi, T.] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan.
[Moiseev, A. A.; Perkins, J. S.] CRESST, Greenbelt, MD 20771 USA.
[Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Norris, J. P.] Boise State Univ, Dept Phys, Boise, ID 83725 USA.
[Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Paneque, D.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Perkins, J. S.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA.
[Perkins, J. S.] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA.
[Perkins, J. S.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.
[Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria.
[Reyes, L. C.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93401 USA.
[Sanchez, D. A.] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany.
[Scargle, J. D.] NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA.
[Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA.
[Stephens, T. E.] Wyle Labs, El Segundo, CA 90245 USA.
[Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA.
[Tajima, H.] Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan.
[Tibolla, O.] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany.
[Vianello, G.] CIFS, I-10133 Turin, Italy.
[Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy.
[von Kienlin, A.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Weltevrede, P.] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England.
RP Ackermann, M (reprint author), Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany.
EM mar0@uw.edu; mdwood@slac.stanford.edu
RI Mazziotta, Mario /O-8867-2015; Sgro, Carmelo/K-3395-2016; Orlando,
E/R-5594-2016; Moskalenko, Igor/A-1301-2007; Tosti, Gino/E-9976-2013;
Saz Parkinson, Pablo Miguel/I-7980-2013; Rando, Riccardo/M-7179-2013;
Hays, Elizabeth/D-3257-2012; Reimer, Olaf/A-3117-2013; Morselli,
Aldo/G-6769-2011; Nemmen, Rodrigo/O-6841-2014; Funk, Stefan/B-7629-2015;
Johannesson, Gudlaugur/O-8741-2015; Loparco, Francesco/O-8847-2015;
Gargano, Fabio/O-8934-2015; giglietto, nicola/I-8951-2012
OI orienti, monica/0000-0003-4470-7094; Giroletti,
Marcello/0000-0002-8657-8852; Gasparrini, Dario/0000-0002-5064-9495;
Baldini, Luca/0000-0002-9785-7726; Mazziotta, Mario
/0000-0001-9325-4672; Stephens, Thomas/0000-0003-3065-6871; Grandi,
Paola/0000-0003-1848-6013; Caraveo, Patrizia/0000-0003-2478-8018; Sgro',
Carmelo/0000-0001-5676-6214; SPINELLI, Paolo/0000-0001-6688-8864; Rando,
Riccardo/0000-0001-6992-818X; Bastieri, Denis/0000-0002-6954-8862;
Omodei, Nicola/0000-0002-5448-7577; Chaty, Sylvain/0000-0002-5769-8601;
Pesce-Rollins, Melissa/0000-0003-1790-8018; Moskalenko,
Igor/0000-0001-6141-458X; Reimer, Olaf/0000-0001-6953-1385; Morselli,
Aldo/0000-0002-7704-9553; Funk, Stefan/0000-0002-2012-0080; Johannesson,
Gudlaugur/0000-0003-1458-7036; Loparco, Francesco/0000-0002-1173-5673;
Gargano, Fabio/0000-0002-5055-6395; giglietto,
nicola/0000-0002-9021-2888
FU K. A. Wallenberg Foundation; Commonwealth Government; Istituto Nazionale
di Astrofisica in Italy; Centre National d'Etudes Spatiales in France
FX Royal Swedish Academy of Sciences Research Fellow, funded by a grant
from the K. A. Wallenberg Foundation.; 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.; 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.
NR 41
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U1 0
U2 22
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD MAR 1
PY 2013
VL 765
IS 1
AR 54
DI 10.1088/0004-637X/765/1/54
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 090CZ
UT WOS:000314957900054
ER
PT J
AU Sargent, BA
Patel, NA
Meixner, M
Otsuka, M
Riebel, D
Srinivasan, S
AF Sargent, Benjamin A.
Patel, N. A.
Meixner, M.
Otsuka, M.
Riebel, D.
Srinivasan, S.
TI CO J=2-1 EMISSION FROM EVOLVED STARS IN THE GALACTIC BULGE
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE circumstellar matter; infrared: stars; radio lines: stars; stars: AGB
and post-AGB
ID GIANT BRANCH STARS; ROTATIONAL LINE-PROFILES; SPITZER-SPACE-TELESCOPE;
RED SUPERGIANT STARS; MASS-LOSS HISTORY; ALL-SKY SURVEY; OH/IR STARS;
AGB STARS; CENTER REGION; FORMING REGIONS
AB We observe a sample of eight evolved stars in the Galactic bulge in the CO J = 2-1 line using the Submillimeter Array with angular resolution of 1 ''-4 ''. These stars have been detected previously at infrared wavelengths, and several of them have OH maser emission. We detect CO J = 2-1 emission from three of the sources in the sample: OH 359.943 + 0.260, [SLO2003] A12, and [SLO2003] A51. We do not detect the remaining five stars in the sample because of heavy contamination from the galactic CO emission. Combining CO data with observations at infrared wavelengths constraining dust mass loss from these stars, we determine the gas-to-dust ratios of the Galactic bulge stars for which CO emission is detected. For OH 359.943 + 0.260, we determine a gas mass-loss rate of 7.9 (+/- 2.2) x 10(-5)M(circle dot) yr(-1) and a gas-to-dust ratio of 310 (+/- 89). For [SLO2003] A12, we find a gas mass-loss rate of 5.4 (+/- 2.8) x 10(-5)M(circle dot) yr(-1) and a gas-to-dust ratio of 220 (+/- 110). For [SLO2003] A51, we find a gas mass-loss rate of 3.4 (+/- 3.0) x 10(-5)M(circle dot) yr(-1) and a gas-to-dust ratio of 160 (+/- 140), reflecting the low quality of our tentative detection of the CO J = 2-1 emission from A51. We find that the CO J = 2-1 detections of OH/IR stars in the Galactic bulge require lower average CO J = 2-1 backgrounds.
C1 [Sargent, Benjamin A.; Meixner, M.] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Sargent, Benjamin A.] Rochester Inst Technol, Ctr Imaging Sci, Rochester, NY 14623 USA.
[Sargent, Benjamin A.] Rochester Inst Technol, Lab Multiwavelength Astrophys, Rochester, NY 14623 USA.
[Patel, N. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Otsuka, M.; Srinivasan, S.] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan.
[Riebel, D.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
[Riebel, D.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
[Srinivasan, S.] Inst Astrophys Paris, UPMC CNRS UMR7095, F-75014 Paris, France.
RP Sargent, BA (reprint author), Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA.
EM baspci@rit.edu
FU Smithsonian Institution; Academia Sinica; NASA [1407]; NASA ADP grant
[NNX11AB06G]
FX The Submillimeter Array is a joint project between the Smithsonian
Astrophysical Observatory and the Academia Sinica Institute of Astronomy
and Astrophysics and is funded by the Smithsonian Institution and the
Academia Sinica. The authors acknowledge Anders Winnberg for discussions
via email that have been very helpful in interpreting our SMA data. The
authors thank the anonymous referee for comments that greatly improved
this manuscript. This work makes use of observations made with the
Spitzer Space Telescope, which is operated by the Jet Propulsion
Laboratory, California Institute of Technology, under NASA contract
1407. This research has made use of the SIMBAD database, operated at
CDS, Strasbourg, France. This research has made use of the VizieR
catalog access tool, CDS, Strasbourg, France. The original description
of the VizieR service was published in A&AS, 143, 23 (Ochsenbein et al.
2000). This research was supported by NASA ADP grant NNX11AB06G.
NR 59
TC 0
Z9 0
U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD MAR 1
PY 2013
VL 765
IS 1
AR 20
DI 10.1088/0004-637X/765/1/20
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 090CZ
UT WOS:000314957900020
ER
PT J
AU Mohr, SB
Gorham, ED
Alcaraz, JE
Kane, CI
Macera, CA
Parsons, JK
Wingard, DL
Horst, R
Garland, CF
AF Mohr, Sharif B.
Gorham, Edward D.
Alcaraz, John E.
Kane, Christopher I.
Macera, Caroline A.
Parsons, J. Kellogg
Wingard, Deborah L.
Horst, Ronald
Garland, Cedric F.
TI Serum 25-hydroxyvitamin D and breast cancer in the military: a
case-control study utilizing pre-diagnostic serum
SO CANCER CAUSES & CONTROL
LA English
DT Article
DE Vitamin D; Breast neoplasms; Case-control studies; 25-hyrdoxyvitamin D;
Epidemiology
ID VITAMIN-D INTAKE; PLASMA 25-HYDROXYVITAMIN-D; POSTMENOPAUSAL WOMEN;
POOLED ANALYSIS; OVARIAN-CANCER; COLON CANCER; RISK; MORTALITY; CALCIUM;
1,25-DIHYDROXYVITAMIN-D
AB The objective of this study was to ascertain whether a relationship exists between pre-diagnostic serum levels of 25-hydroxyvitamin D (25(OH)D) and risk of breast cancer in young women.
About 600 incident cases of breast cancer were matched to 600 controls as part of a nested case-control study that utilized pre-diagnostic sera. Logistic regression was used to assess the relationship between serum 25(OH)D concentration and breast cancer risk, controlling for race and age.
According to the conditional logistic regression for all subjects, odds ratios for breast cancer by quintile of serum 25(OH)D from lowest to highest were 1.2, 1.0, 0.9, 1.1, and 1.0 (reference) (p trend = 0.72). After multivariate regression for subjects whose blood had been collected within 90 days preceding diagnosis, odds ratios for breast cancer by quintile of serum 25(OH)D from lowest to highest were 3.3, 1.9, 1.7, 2.6, and 1.0 (reference) (p trend = 0.09).
An inverse association between serum 25(OH)D concentration and risk of breast cancer was not present in the principal analysis, although an inverse association was present in a small subgroup analysis of subjects whose blood had been collected within 90 days preceding diagnosis. Further prospective studies of 25(OH)D and breast cancer risk are needed.
C1 [Mohr, Sharif B.; Gorham, Edward D.; Kane, Christopher I.; Wingard, Deborah L.; Garland, Cedric F.] Univ Calif San Diego, Div Epidemiol, Dept Family & Prevent Med, La Jolla, CA 92093 USA.
[Mohr, Sharif B.; Gorham, Edward D.; Garland, Cedric F.] Naval Hlth Res Ctr, San Diego, CA 92106 USA.
[Alcaraz, John E.; Macera, Caroline A.] San Diego State Univ, Dept Epidemiol & Biostat, San Diego, CA 92182 USA.
[Parsons, J. Kellogg] Univ Calif San Diego, Dept Surg, La Jolla, CA 92093 USA.
[Horst, Ronald] Heartland Assays, Ames, IA USA.
RP Mohr, SB (reprint author), Univ Calif San Diego, Div Epidemiol, Dept Family & Prevent Med, 9500 Gilman Dr 0620, La Jolla, CA 92093 USA.
EM sbmohr75@yahoo.com
FU Department of the Navy, Bureau of Medicine and Surgery, under Work Unit
at the Naval Health Research Center (San Diego, CA, USA) [60126]
FX This research was supported by a Congressional allocation to the Penn
State Cancer Institute of the Hershey Medical Center, Hershey, PA,
through the Department of the Navy, Bureau of Medicine and Surgery,
under Work Unit No. 60126 at the Naval Health Research Center (San
Diego, CA, USA). The views presented here are solely the opinions of the
authors and do not represent an official position of the Department of
the Navy, the Department of Defense, or the U.S. Government. Approved
for public release; distribution unlimited. Thanks to Dr. Angelee Ferber
of the U.S. Army Medical Research and Development Command for providing
the blood samples used in this study and for her outstanding support of
the research. Thanks to June J. Kim, B. S., of Naval Health Research
Center for her valued work editing the manuscript.
NR 57
TC 8
Z9 8
U1 1
U2 12
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0957-5243
EI 1573-7225
J9 CANCER CAUSE CONTROL
JI Cancer Causes Control
PD MAR
PY 2013
VL 24
IS 3
BP 495
EP 504
DI 10.1007/s10552-012-0140-6
PG 10
WC Oncology; Public, Environmental & Occupational Health
SC Oncology; Public, Environmental & Occupational Health
GA 090KC
UT WOS:000314976900009
PM 23296455
ER
PT J
AU Montgomery, MT
Coffin, RB
Boyd, TJ
Osburn, CL
AF Montgomery, Michael T.
Coffin, Richard B.
Boyd, Thomas J.
Osburn, Christopher L.
TI Incorporation and mineralization of TNT and other anthropogenic organics
by natural microbial assemblages from a small, tropical estuary
SO ENVIRONMENTAL POLLUTION
LA English
DT Article
DE TNT; Incorporation; Mineralization; Biodegradation; Bacteria; Kahana Bay
ID BACTERIAL-GROWTH EFFICIENCY; AQUATIC SYSTEMS; 2,4,6-TRINITROTOLUENE TNT;
PROTEIN-SYNTHESIS; FRONT; MATTER; TRANSFORMATION; DEGRADATION;
EXPLOSIVES; SEDIMENTS
AB 2,4,6-Trinitrotoluene (TNT) metabolism was compared across salinity transects in Kahana Bay, a small tropical estuary on Oahu, HI. In surface water, TNT incorporation rates (range: 3-121 mu g C L-1 d(-1)) were often 1-2 orders of magnitude higher than mineralization rates suggesting that it may serve as organic nitrogen for coastal microbial assemblages. These rates were often an order of magnitude more rapid than those for RDX and two orders more than HMX. During average or high stream flow, TNT incorporation was most rapid at the riverine end member and generally decreased with increasing salinity. This pattern was not seen during low flow periods. Although TNT metabolism was not correlated with heterotrophic growth rate, it may be related to metabolism of other aromatic compounds. With most TNT ring-carbon incorporation efficiencies at greater than 97%, production of new biomass appears to be a more significant product of microbial TNT metabolism than mineralization. Published by Elsevier Ltd.
C1 [Montgomery, Michael T.; Coffin, Richard B.; Boyd, Thomas J.] USN, Res Lab, Marine Biogeochem Sect, Washington, DC 20375 USA.
[Osburn, Christopher L.] N Carolina State Univ, Raleigh, NC 27695 USA.
RP Montgomery, MT (reprint author), USN, Res Lab, Marine Biogeochem Sect, Code 6114,4555 Overlook Ave, Washington, DC 20375 USA.
EM michael.montgomery@nrl.navy.mil; richard.coffin@nrl.navy.mil;
thomas.boyd@nrl.navy.mil; closburn@ncsu.edu
OI Osburn, Christopher/0000-0002-9334-4202
FU Strategic Environmental Research and Development Program, Environmental
Restoration projects [ER-1431, ER-2124]
FX This work was supported by the Strategic Environmental Research and
Development Program, Environmental Restoration projects ER-1431 and
ER-2124 to MTM and CLO (Program Manager: Dr. Andrea Leeson). The authors
also wish to thank Qing Li, Charlie Nelson, Joe Smith, and Jane
Casteline for site and sampling support and for the comments of two
anonymous reviewers.
NR 43
TC 5
Z9 5
U1 1
U2 19
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0269-7491
J9 ENVIRON POLLUT
JI Environ. Pollut.
PD MAR
PY 2013
VL 174
BP 257
EP 264
DI 10.1016/j.envpol.2012.11.036
PG 8
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA 090SZ
UT WOS:000315001600035
PM 23287075
ER
PT J
AU Forsberg, JA
Wedin, R
Bauer, H
AF Forsberg, Jonathan Agner
Wedin, Rikard
Bauer, Henrik
TI Which Implant Is Best After Failed Treatment for Pathologic Femur
Fractures?
SO CLINICAL ORTHOPAEDICS AND RELATED RESEARCH
LA English
DT Article; Proceedings Paper
CT 16th Meeting of the International-Society-of-Limb-Salvage (ISOLS)
CY 2011
CL Beijing, PEOPLES R CHINA
SP Int Soc Limb Salvage (ISOLS)
ID SKELETAL METASTATIC LESIONS; SURGICAL-TREATMENT; ENDOPROSTHETIC
REPLACEMENT; PROXIMAL FEMUR; HIP; COMPLICATIONS; ARTHROPLASTY; SURVIVAL;
SURGERY; DISEASE
AB Successful treatment of pathologic femur fractures can preserve a patient's independence and quality of life. The choice of implant depends on several disease- and patient-specific variables; however, its durability must generally match the patient's estimated life expectancy. Failures do occur, however, it is unclear which implants are associated with greater risk of failure.
We evaluated patients with femoral metastases in whom implants failed to determine (1) the rate of reoperation; (2) the timing of and most common causes for failure; and (3) incidence of perioperative complications and death.
From a prospectively collected registry, we identified 93 patients operated on for failed treatment of femoral metastases from 1990 to 2010. We excluded five patients who subsequently underwent amputations leaving 88 who underwent salvage procedures. These included intramedullary nails (n = 11), endoprostheses (n = 61), and plate fixation (n = 16). The primary outcome was reoperation after salvage treatment.
Seventeen of the 88 patients (19%) required subsequent reoperation a median of 10 months (interquartile range, 4-14) from the time of salvage surgery: 15 for material failure, one for local progression of tumor, and one for a combination of these. Five patients died within 4 weeks of surgery. Although perioperative complications were higher in the endoprosthesis group and dislocations occurred, overall treatment failures after salvage surgery were lower in the that group (four of 61) compared the group with plate fixation (eight of 16) and intramedullary nail groups (five of 11).
Despite relatively common perioperative complications, salvage using endoprostheses may be associated with fewer treatment failures as compared with internal fixation.
Level III, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
C1 [Forsberg, Jonathan Agner] USN, Med Res Ctr, Silver Spring, MD 20910 USA.
[Forsberg, Jonathan Agner; Wedin, Rikard; Bauer, Henrik] Karolinska Inst, Karolinska Univ Hosp, Dept Mol Med & Surg, Sect Orthopaed & Sports Med, Stockholm, Sweden.
Karolinska Univ Hosp, Stockholm, Sweden.
RP Forsberg, JA (reprint author), USN, Med Res Ctr, Silver Spring, MD 20910 USA.
EM jaforsberg@me.com
OI Wedin, Rikard/0000-0002-2440-1218
NR 19
TC 6
Z9 6
U1 1
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0009-921X
J9 CLIN ORTHOP RELAT R
JI Clin. Orthop. Rel. Res.
PD MAR
PY 2013
VL 471
IS 3
BP 735
EP 740
DI 10.1007/s11999-012-2558-2
PG 6
WC Orthopedics; Surgery
SC Orthopedics; Surgery
GA 084EC
UT WOS:000314518500008
PM 22948531
ER
PT J
AU Forsberg, JA
Sjoberg, D
Chen, QR
Vickers, A
Healey, JH
AF Forsberg, Jonathan Agner
Sjoberg, Daniel
Chen, Qing-Rong
Vickers, Andrew
Healey, John H.
TI Treating Metastatic Disease: Which Survival Model Is Best Suited for the
Clinic?
SO CLINICAL ORTHOPAEDICS AND RELATED RESEARCH
LA English
DT Article
ID CANCER-PATIENTS; PREDICTION; PROGNOSIS; SURGERY; CURVE; CARE
AB To avoid complications associated with under- or overtreatment of patients with skeletal metastases, doctors need accurate survival estimates. Unfortunately, prognostic models for patients with skeletal metastases of the extremities are lacking, and physician-based estimates are generally inaccurate.
We developed three types of prognostic models and compared them using calibration plots, receiver operating characteristic (ROC) curves, and decision curve analysis to determine which one is best suited for clinical use.
A training set consisted of 189 patients who underwent surgery for skeletal metastases. We created models designed to predict 3- and 12-month survival using three methods: an Artificial Neural Network (ANN), a Bayesian Belief Network (BBN), and logistic regression. We then performed crossvalidation and compared the models in three ways: calibration plots plotting predicted against actual risk; area under the ROC curve (AUC) to discriminate the probability that a patient who died has a higher predicted probability of death compared to a patient who did not die; and decision curve analysis to quantify the clinical consequences of over- or undertreatment.
All models appeared to be well calibrated, with the exception of the BBN, which underestimated 3-month survival at lower probability estimates. The ANN models had the highest discrimination, with an AUC of 0.89 and 0.93, respectively, for the 3- and 12-month models. Decision analysis revealed all models could be used clinically, but the ANN models consistently resulted in the highest net benefit, outperforming the BBN and logistic regression models.
Our observations suggest use of the ANN model to aid decisions about surgery would lead to better patient outcomes than other alternative approaches to decision making.
Level II, prognostic study. See Instructions for Authors for a complete description of levels of evidence.
C1 [Forsberg, Jonathan Agner] USN, Med Res Ctr, Silver Spring, MD 20910 USA.
[Forsberg, Jonathan Agner] Karolinska Inst, Karolinska Univ Hosp, Dept Mol Med & Surg, Sect Orthopaed & Sports Med, Stockholm, Sweden.
[Sjoberg, Daniel; Vickers, Andrew] Mem Sloan Kettering Canc Ctr, Dept Epidemiol & Biostat, New York, NY 10021 USA.
[Chen, Qing-Rong] NCI, Ctr Bioinformat & Informat Technol, Rockville, MD USA.
[Healey, John H.] Cornell Univ, Mem Sloan Kettering Canc Ctr, Dept Surg, Orthopaed Surg Serv, New York, NY 10021 USA.
[Healey, John H.] Cornell Univ, Weill Coll Med, New York, NY 10021 USA.
Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA.
RP Forsberg, JA (reprint author), USN, Med Res Ctr, 503 Robert Grant Ave, Silver Spring, MD 20910 USA.
EM jaforsberg@me.com
OI Vickers, Andrew/0000-0003-1525-6503
FU NCI NIH HHS [P30 CA008748]
NR 23
TC 8
Z9 8
U1 1
U2 3
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0009-921X
J9 CLIN ORTHOP RELAT R
JI Clin. Orthop. Rel. Res.
PD MAR
PY 2013
VL 471
IS 3
BP 843
EP 850
DI 10.1007/s11999-012-2577-z
PG 8
WC Orthopedics; Surgery
SC Orthopedics; Surgery
GA 084EC
UT WOS:000314518500021
PM 22983682
ER
PT J
AU Downey, RH
Brewer, LN
Karunasiri, G
AF Downey, R. H.
Brewer, L. N.
Karunasiri, G.
TI Determination of mechanical properties of a MEMS directional sound
sensor using a nanoindenter
SO SENSORS AND ACTUATORS A-PHYSICAL
LA English
DT Article
DE MEMS; Nanoindenter; Linear elastic stiffness; Spring constant; Resonant
frequencies
AB We use a nanoindenter to measure the stiffness of mechanical components of a microelectromechanical directional sound sensor. The results validate analytical and numerical linear elastic models, identify the physical structures associated with each resonant frequency, and provide an estimate of the maximum sound pressure the sensor can tolerate. Because the sensor has bending and twisting components that act as springs in series, the overall compliance is the sum of several terms, each of which varies with the location of the loading force along the sensor's surface. By fitting a curve to a plot of the measured overall stiffness vs. location of the loading force, we quantify the separate compliance terms and thereby estimate the resonant frequencies of the corresponding vibrational modes. The frequencies estimated by this method for the two modes are in reasonably good agreement with the measured resonant frequencies. Finally, we establish a minimum failure strength of the sensor, from which we estimate that it can tolerate a sound pressure level greater than about 162 dB without damage. Published by Elsevier B.V.
C1 [Downey, R. H.; Karunasiri, G.] USN, Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
[Brewer, L. N.] USN, Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
RP Downey, RH (reprint author), USN, Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
EM rhdowney@nps.edu; lnbrewer@nps.edu; karunasiri@nps.edu
NR 15
TC 1
Z9 1
U1 2
U2 20
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0924-4247
J9 SENSOR ACTUAT A-PHYS
JI Sens. Actuator A-Phys.
PD MAR 1
PY 2013
VL 191
BP 27
EP 33
DI 10.1016/j.sna.2012.11.033
PG 7
WC Engineering, Electrical & Electronic; Instruments & Instrumentation
SC Engineering; Instruments & Instrumentation
GA 082HN
UT WOS:000314383000004
ER
PT J
AU Santomauro, M
Reina, GA
Stroup, SP
L'Esperance, JO
AF Santomauro, Michael
Reina, G. Anthony
Stroup, Sean P.
L'Esperance, James O.
TI Telementoring in robotic surgery
SO CURRENT OPINION IN UROLOGY
LA English
DT Review
DE laparoscopy; remote surgery; robotic surgery; telementoring;
telestration; telesurgery
ID TELESURGERY; TOOL
AB Purpose of review
To provide an overview of the current concepts regarding telementoring with robotic surgery highlighting recent advances with respect to urological minimally invasive surgery (MIS).
Recent findings
As robotic surgery continues to evolve, telementoring will become a viable alternative to traditional on-site surgical proctoring.
Summary
MIS represents one of the most important breakthroughs in medicine over the past few decades. Newcomers to MIS need the guidance of more experienced, 'high volume' mentors to achieve the superior outcomes promised by MIS over conventional techniques.
Telementoring, a subset of telemedicine, allows a surgeon at a remote site to offer intraoperative guidance via telecommunication networks. MIS lends itself well to telementoring techniques for several reasons; the primary surgeon performing MIS is working off of video images of the surgical field or images sent to a console. As such, the mentor is seeing the exact same images as the primary surgeon. In this review, we highlight many of the latest technologies in telemedicine, which are applicable to MIS and provide an overview of the pitfalls, which need to be overcome to make telementoring (and eventually telesurgery) a standard tool in the MIS arsenal.
C1 [Santomauro, Michael; Reina, G. Anthony; Stroup, Sean P.; L'Esperance, James O.] USN, Dept Urol, San Diego Med Ctr, San Diego, CA 92134 USA.
RP L'Esperance, JO (reprint author), USN, Dept Urol, San Diego Med Ctr, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
EM james.lesperance@med.navy.mil
NR 18
TC 9
Z9 9
U1 1
U2 11
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0963-0643
J9 CURR OPIN UROL
JI Curr. Opin. Urol.
PD MAR
PY 2013
VL 23
IS 2
BP 141
EP 145
DI 10.1097/MOU.0b013e32835d4cc2
PG 5
WC Urology & Nephrology
SC Urology & Nephrology
GA 080ZY
UT WOS:000314285100007
PM 23357931
ER
PT J
AU Demirkan, H
Dolk, D
AF Demirkan, Haluk
Dolk, Daniel
TI Analytical, computational and conceptual modeling in service science and
systems
SO INFORMATION SYSTEMS AND E-BUSINESS MANAGEMENT
LA English
DT Editorial Material
DE Service science; Service systems; Cloud services; Service level
agreements; Service-oriented architecture; Software-as-a-service
AB While the service economy is growing very fast, more organizations are reorienting their processes, tools, and products towards service-oriented applications. This service-oriented paradigm is creating new challenges and opportunities for organizations. In this article, we discuss service science and systems, and provide a conceptual view of the service ecosystem in the context of analytical, computational and conceptual modeling. As service scientists, our ultimate goal should be to develop and provide a science-based approach to the dynamic, scalable, secure, and knowledge-driven design and development of service ecosystems, while in the process fostering the development of academic researchers and industry professionals to work in diverse, interdisciplinary teams for engineering adaptable solutions to distributed computing problems.
C1 [Demirkan, Haluk] Arizona State Univ, Tempe, AZ 85287 USA.
[Dolk, Daniel] USN, Postgrad Sch, Monterey, CA USA.
RP Demirkan, H (reprint author), Arizona State Univ, Tempe, AZ 85287 USA.
EM haluk.demirkan@asu.edu; drdolk@nps.edu
NR 17
TC 0
Z9 0
U1 5
U2 37
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1617-9846
EI 1617-9854
J9 INF SYST E-BUS MANAG
JI Inf. Syst. E-Bus. Manag.
PD MAR
PY 2013
VL 11
IS 1
SI SI
BP 1
EP 11
DI 10.1007/s10257-012-0189-5
PG 11
WC Business; Management
SC Business & Economics
GA 082SE
UT WOS:000314411800001
ER
PT J
AU Kridel, D
Dolk, D
AF Kridel, Don
Dolk, Daniel
TI Automated self-service modeling: predictive analytics as a service
SO INFORMATION SYSTEMS AND E-BUSINESS MANAGEMENT
LA English
DT Article
DE Customer targeting service; Predictive analytics; Service-oriented
architecture; Model management; Automated modeling
ID SYSTEMS
AB Research into service provision and innovation is becoming progressively more important as automated service-provision via the web matures as a technology. We describe a web-based targeting platform that uses advanced dynamic model building techniques to conduct intelligent reporting and modeling. The impact of the automated targeting services is realized through a knowledge base that drives the development of predictive model(s). The knowledge base is comprised of a rules engine that guides and evaluates the development of an automated model-building process. The template defines the model classifier (e.g., logistic regression, multinomial logit, ordinary least squares, etc.) in concert with rules for data filling and transformations. Additionally, the template also defines which variables to test ("include" rules) and which variables to retain ("keep" rules). The "final" model emerges from the iterative steps undertaken by the rules engine, and is utilized to target, or rank, the best prospects. This automated modeling approach is designed to cost-effectively assist businesses in their targeting activities-independent of the firm's size and targeting needs. We describe how the service has been utilized to provide "targeting services" for a small to medium business direct marketing campaign, and for direct sales-force targeting in a larger firm. Empirical results suggest that the automated modeling approach provides superior "service" in terms of cost and timing compared to more traditional manual service provision.
C1 [Kridel, Don] Univ Missouri, Dept Econ, St Louis, MO 63121 USA.
[Dolk, Daniel] USN, Postgrad Sch, Dept Informat Sci, Monterey, CA USA.
RP Dolk, D (reprint author), USN, Postgrad Sch, Dept Informat Sci, Monterey, CA USA.
EM kridel@umsl.edu; drdolk@nps.edu
NR 30
TC 6
Z9 6
U1 3
U2 41
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1617-9846
J9 INF SYST E-BUS MANAG
JI Inf. Syst. E-Bus. Manag.
PD MAR
PY 2013
VL 11
IS 1
SI SI
BP 119
EP 140
DI 10.1007/s10257-011-0185-1
PG 22
WC Business; Management
SC Business & Economics
GA 082SE
UT WOS:000314411800006
ER
PT J
AU Vasudevan, AK
Moody, NR
Holroyd, NJH
Ricker, RE
AF Vasudevan, A. K.
Moody, N. R.
Holroyd, N. J. H.
Ricker, R. E.
TI International Symposium on the Environmental Damage under Static and
Cyclic Loads in Structural Materials at Ambient Temperatures-II Foreword
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Editorial Material
C1 [Vasudevan, A. K.] Off Naval Res, Arlington, VA 22217 USA.
[Moody, N. R.] Sandia Natl Labs, Livermore, CA USA.
[Holroyd, N. J. H.] Luxfer Gas Cylinders, Riverside, CA USA.
[Ricker, R. E.] NIST, Gaithersburg, MD 20899 USA.
RP Vasudevan, AK (reprint author), Off Naval Res, Arlington, VA 22217 USA.
RI Ricker, Richard/H-4880-2011
OI Ricker, Richard/0000-0002-2871-4908
NR 0
TC 0
Z9 0
U1 1
U2 7
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD MAR
PY 2013
VL 44A
IS 3
BP 1163
EP 1163
DI 10.1007/s11661-012-1537-2
PG 1
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 082BK
UT WOS:000314366500004
ER
PT J
AU Vasudevan, AK
AF Vasudevan, A. K.
TI Applied Stress Affecting the Environmentally Assisted Cracking
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article; Proceedings Paper
CT International Symposium on the Environmental Damage under Static and
Cyclic Loads in Structural Materials at Ambient Temperatures-II
CY AUG 14-19, 2011
CL Krakow, POLAND
ID CORROSION CRACKING; COMPRESSIVE STRESS; HYDROGEN SOLUBILITY;
GRAIN-BOUNDARIES; ALUMINUM-ALLOY; DIFFUSION; EMBRITTLEMENT; GA;
MECHANISM; SURFACES
AB Stress corrosion cracking (SCC) is affected by the mode of applied stress, i.e., tension, compression, or torsion. The cracking is measured in terms of initiation time to nucleate a crack or time to failure. In a simple uniaxial loading under tension or compression, it is observed that the initiation time can vary in orders of magnitude depending on the alloy and the environment. Fracture can be intergranular or transgranular or mixed mode. Factors that affect SCC are solubility of the metal into surrounding chemical solution, and diffusion rate (like hydrogen into a tensile region) of an aggressive element into the metal and liquid metallic elements in the grain boundaries. Strain hardening exponent that affects the local internal stresses and their gradients can affect the diffusion kinetics. We examine two environments (Ga and 3.5 pct NaCl) for the same alloy 7075-T651, under constant uniaxial tension and compression load. These two cases provide us application to two different governing mechanisms namely liquid metal embrittlement (7075-Ga) and hydrogen-assisted cracking (7075-NaCl). We note that, in spite of the differences in their mechanisms, both systems show similar behavior in the applied K vs crack initiation time plots. One common theme among them is the transport mechanism of a solute element to a tensile-stress region to initiate fracture.
C1 Off Naval Res, Arlington, VA 22203 USA.
RP Vasudevan, AK (reprint author), Off Naval Res, Code 332,875 N Randolph St, Arlington, VA 22203 USA.
EM vasudea@onr.navy.mil
NR 37
TC 6
Z9 6
U1 2
U2 27
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 MAR
PY 2013
VL 44A
IS 3
BP 1254
EP 1267
DI 10.1007/s11661-012-1585-7
PG 14
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 082BK
UT WOS:000314366500011
ER
PT J
AU Goswami, R
Lynch, S
Holroyd, NJH
Knight, SP
Holtz, RL
AF Goswami, Ramasis
Lynch, Stanley
Holroyd, N. J. Henry
Knight, Steven P.
Holtz, Ronald L.
TI Evolution of Grain Boundary Precipitates in Al 7075 Upon Aging and
Correlation with Stress Corrosion Cracking Behavior
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article; Proceedings Paper
CT International Symposium on the Environmental Damage under Static and
Cyclic Loads in Structural Materials at Ambient Temperatures-II
CY AUG 14-19, 2011
CL Krakow, POLAND
ID ZN-MG ALLOYS; ALUMINUM-ALLOY; CU ALLOYS; MECHANICAL-PROPERTIES;
RETROGRESSION; MICROSTRUCTURES; CHEMISTRY; COPPER
AB Transmission electron microscopy (TEM) was employed to investigate the microchemistry and microstructure of grain boundary precipitates in Al 7075 aged at room temperature for several hours, at 393 K (120 A degrees C) for 12 hours (under aged), at peak aged (T651) and over aged (T73) conditions. High resolution TEM analysis of precipitates at grain boundaries and fine probe energy dispersive spectrometry showed that the grain boundary precipitates at peak and over aged conditions are hexagonal eta phase with stoichiometry Mg(Cu (x) Zn1-x )(2). Considerable increase in Cu content in the grain boundary eta in the over aged condition compared to the peak aged condition was observed. The average Cu content in the over aged condition was found to be 20 at. pct. The higher Cu content of the precipitate is associated with a lower stress corrosion cracking plateau velocity.
C1 [Goswami, Ramasis; Holtz, Ronald L.] USN, Res Lab, Multifunct Mat Branch, Washington, DC 20375 USA.
[Lynch, Stanley] Def Sci & Technol Org, Melbourne, Vic, Australia.
[Knight, Steven P.] RMIT Univ, Melbourne, Vic, Australia.
RP Goswami, R (reprint author), USN, Res Lab, Multifunct Mat Branch, Code 6351, Washington, DC 20375 USA.
EM ramasis.goswami@nrl.navy.mil
FU Office of Naval Research
FX The authors gratefully acknowledge the Office of Naval Research, program
officers Dr. L. Kabacoff and Dr. A. K. Vasudevan for funding this work.
NR 44
TC 12
Z9 12
U1 6
U2 54
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 MAR
PY 2013
VL 44A
IS 3
BP 1268
EP 1278
DI 10.1007/s11661-012-1413-0
PG 11
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 082BK
UT WOS:000314366500012
ER
PT J
AU Mikheevskiy, S
Glinka, G
Lee, E
AF Mikheevskiy, S.
Glinka, G.
Lee, E.
TI Fatigue Crack Growth Analysis Under Spectrum Loading in Various
Environmental Conditions
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article; Proceedings Paper
CT International Symposium on the Environmental Damage under Static and
Cyclic Loads in Structural Materials at Ambient Temperatures-II
CY AUG 14-19, 2011
CL Krakow, POLAND
ID HARDENING MATERIAL; DRIVING-FORCE; TIP; PARAMETERS
AB The fatigue process consists, from the engineering point of view, of three stages: crack initiation, fatigue crack growth, and the final failure. It is also known that the fatigue process near notches and cracks is governed by local strains and stresses in the regions of maximum stress and strain concentrations. Therefore, the fatigue crack growth can be considered as a process of successive crack increments, and the fatigue crack initiation and subsequent growth can be modeled as one repetitive process. The assumptions mentioned above were used to derive a fatigue crack growth model based, called later as the UniGrow model, on the analysis of cyclic elastic-plastic stresses-strains near the crack tip. The fatigue crack growth rate was determined by simulating the cyclic stress-strain response in the material volume adjacent to the crack tip and calculating the accumulated fatigue damage in a manner similar to fatigue analysis of stationary notches. The fatigue crack growth driving force was derived on the basis of the stress and strain history at the crack tip and the Smith-Watson-Topper (SWT) fatigue damage parameter, D = sigma(max)Delta epsilon/2. It was subsequently found that the fatigue crack growth was controlled by a two-parameter driving force in the form of a weighted product of the stress intensity range and the maximum stress intensity factor, Delta K (p) K (max) (1-p) . The effect of the internal (residual) stress induced by the reversed cyclic plasticity has been accounted for and therefore the two-parameter driving force made it possible to predict the effect of the mean stress including the influence of the applied compressive stress, tensile overloads, and variable amplitude spectrum loading. It allows estimating the fatigue life under variable amplitude loading without using crack closure concepts. Several experimental fatigue crack growth datasets obtained for the Al 7075 aluminum alloy were used for the verification of the proposed unified fatigue crack growth model. The method can be also used to predict fatigue crack growth under constant amplitude and spectrum loading in various environmental conditions such as vacuum, air, and corrosive environment providing that appropriate limited constant amplitude fatigue crack growth data obtained in the same environment are available. The proposed methodology is equally suitable for fatigue analysis of smooth, notched, and cracked components.
C1 [Mikheevskiy, S.; Glinka, G.] Univ Waterloo, Dept Mech Engn, Waterloo, ON N2L 3G1, Canada.
[Lee, E.] USN, Air Warfare Ctr, Div Aircraft, Patuxent River, MD 20670 USA.
RP Mikheevskiy, S (reprint author), Univ Waterloo, Dept Mech Engn, Waterloo, ON N2L 3G1, Canada.
EM smikheev@engmail.uwaterloo.ca
RI sebastianovitsch, stepan/G-8507-2013
NR 31
TC 4
Z9 4
U1 1
U2 27
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 MAR
PY 2013
VL 44A
IS 3
BP 1301
EP 1310
DI 10.1007/s11661-012-1577-7
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 082BK
UT WOS:000314366500015
ER
PT J
AU Ricker, RE
Lee, EU
Taylor, R
Lei, C
Pregger, B
Lipnickas, E
AF Ricker, R. E.
Lee, E. U.
Taylor, R.
Lei, C.
Pregger, B.
Lipnickas, E.
TI Chloride Ion Activity and Susceptibility of Al Alloys 7075-T6 and
5083-H131 to Stress Corrosion Cracking
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article; Proceedings Paper
CT International Symposium on the Environmental Damage under Static and
Cyclic Loads in Structural Materials at Ambient Temperatures-II
CY AUG 14-19, 2011
CL Krakow, POLAND
ID THERMODYNAMIC ACTIVITY QUANTITIES; ALUMINUM-ALLOYS; DISSOLUTION RATES;
CLOSED SYSTEMS; AQUEOUS SODIUM; 25-DEGREES-C; COPPER; REEVALUATION;
20-DEGREES-C; PASSIVITY
AB The influence of chloride ion activity on the susceptibility of aluminum alloys 5083-H131 and 7075-T6 to stress corrosion cracking (SCC) was investigated by conducting slow strain-rate tensile tests at a strain-rate of 10(-7) s(-1) in naturally aerated aqueous solutions with varying NaCl mass fraction (0.001 to 20 pct) and in a 3.5 pct mass fraction NaCl solution with varying strain-rates (10(-8) to 10(-4) s(-1)). This study found that both alloys exhibited reduced strengths and failure strains (times) in the solutions compared with laboratory air. The extent of these reductions was greater in alloy 5083 for the conditions examined. The strength and ductility of both alloys decreased with chloride ion activity in a manner that indicates a chemical reaction is responsible. The strength and ductility of both alloys decreased with strain-rate in a sigmoidal manner, but the transition in alloy 7075 occurred at slower strain-rates of approximately two orders of magnitude. It was deduced that the chloride ion interacts chemically with the passivated surface in the potential gradient at the crack tip to cause SCC. While no mechanism of cracking can be eliminated on the basis of these results alone, the results are consistent with the hypothesis that the absorbed hydrogen causes cracking in alloy 7075 while cracking in 5083 is the result of a dissolution mechanism.
C1 [Ricker, R. E.] NIST, Mat Sci & Engn Div, Gaithersburg, MD 20899 USA.
[Lee, E. U.; Taylor, R.; Lei, C.; Pregger, B.; Lipnickas, E.] USN, Mat Engn Div, Air Warfare Ctr, Div Aircraft, Patuxent River, MD 20670 USA.
RP Ricker, RE (reprint author), NIST, Mat Sci & Engn Div, Gaithersburg, MD 20899 USA.
EM eun.lee@navy.mil
RI Ricker, Richard/H-4880-2011
OI Ricker, Richard/0000-0002-2871-4908
FU Office of Naval Research at the Naval Air Systems Command
[N0001412AF00002]
FX The authors would like to thank the Office of Naval Research for
supporting this investigation at the Naval Air Systems Command
(Reference No. N0001412AF00002). Special thanks are due to Drs. R.
Williams and A. K. Vasudevan, and Mr. W. C. Nickerson for monitoring and
providing technical guidance to this study.
NR 59
TC 9
Z9 13
U1 1
U2 29
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 MAR
PY 2013
VL 44A
IS 3
BP 1353
EP 1364
DI 10.1007/s11661-012-1500-2
PG 12
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 082BK
UT WOS:000314366500020
ER
PT J
AU Giachetti, RE
Marcelli, V
Cifuentes, J
Rojas, JA
AF Giachetti, Ronald E.
Marcelli, Veronica
Cifuentes, Jose
Rojas, Jose A.
TI An agent-based simulation model of human-robot team performance in
military environments
SO SYSTEMS ENGINEERING
LA English
DT Article
DE agent-based simulation; teams; military operations; shared mental model;
system test and evaluation
ID SHARED MENTAL MODELS; DESIGN; COORDINATION
AB Prior to deploying human-robot teams on military missions, system designers need to understand how design decisions affect team performance. This paper describes a multiagent simulation model that captures both team coordination and human-robot interaction. The purpose of the model is to evaluate proposed team designs in uncertain Military Operations in Urban Terrain (MOUT) scenarios and determine which design factors are most critical to team performance. The simulation model is intended to be a tool in the systems engineering iterations of proposing designs, testing them, and then evaluating them during the conceptual design phase. To illustrate the model's usefulness for this purpose, a fractional factorial design of experiments is conducted to evaluate team design factors and the two-factor interaction between controllable factors and noise factors that described the environment and robot reliability. The experimental results suggest that (1) larger teams have more robust performance over the noise factors, (2) robot reliability is critical to the formation of human-robot teams, and (3) high centralization of decision-making authority created communication bottlenecks at the commander in large teams. This work contributes to the agent-based modeling of teams, and to understanding how the U.S. Army can attain its goal of greater utilization of robots in future military operations. (C) 2012 Wiley Periodicals, Inc. Syst Eng 15
C1 [Giachetti, Ronald E.] USN, Postgrad Sch, Monterey, CA 93943 USA.
[Marcelli, Veronica; Cifuentes, Jose; Rojas, Jose A.] Florida Int Univ, Miami, FL 33174 USA.
RP Giachetti, RE (reprint author), USN, Postgrad Sch, Monterey, CA 93943 USA.
EM regiache@nps.edu
FU U.S. Army Research Laboratory through the University of Central Florida
[W911NF-06-2-0041]
FX Contract grant sponsor: U.S. Army Research Laboratory through the
University of Central Florida and was accomplished under Cooperative
Agreement Number W911NF-06-2-0041
NR 70
TC 0
Z9 1
U1 2
U2 47
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1098-1241
EI 1520-6858
J9 SYSTEMS ENG
JI Syst. Eng.
PD SPR
PY 2013
VL 16
IS 1
BP 15
EP 28
DI 10.1002/sys.21216
PG 14
WC Engineering, Industrial; Operations Research & Management Science
SC Engineering; Operations Research & Management Science
GA 076VT
UT WOS:000313987700002
ER
PT J
AU Thomas, LD
Hanley, JM
Rhatigan, JL
Neubek, D
AF Thomas, L. Dale
Hanley, Jeffrey M.
Rhatigan, Jennifer L.
Neubek, Deborah
TI NASA's Constellation Program: The final word
SO SYSTEMS ENGINEERING
LA English
DT Article
DE program management; requirements development; system design
methodologies; risk informed design; decision making
AB NASA's Constellation Program, formulated in 2005 to achieve the objectives of maintaining American presence in low Earth orbit, returning to the Moon for purpose of establishing an outpost, and exploring Mars and beyond in the first half of the 21st century, was cancelled in 2010 [US Congress, NASA Authorization Act, Public Law 11-267, 2010]. This paper describes the lessons learned developed by the staff of the Constellation Program to advise future programs, as well as program and system engineering managers of similar national efforts. These lessons learned are offered by those who experienced the day-to-day challenges of managing an effort planned as a multidecade undertaking. This effort spanned all 10 NASA Centers, multiple large-scale acquisitions, and required modernizing an infrastructure designed and sized largely for the Apollo program in the 1960s. Moreover, it required leading a workforce generationally removed from the previous human spacecraft launch and entry development challenges. Key lessons learned from the Constellation Program are addressed and cover program elements in which systems engineers provide leadership and/or assistance to program management, including program planning, requirements development, system design methodology, management structure, decision-making, and communications in a national program. (C) 2012 Wiley Periodicals, Inc. Syst Eng 16:
C1 [Thomas, L. Dale] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA.
[Hanley, Jeffrey M.; Rhatigan, Jennifer L.; Neubek, Deborah] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA.
RP Rhatigan, JL (reprint author), USN, Postgrad Sch, Space Syst Acad Grp, Monterey, CA 93943 USA.
EM dale.thomas@nasa.gov; jeffrey.m.hanley@nasa.gov;
jennifer.l.rhatigan@nasa.gov; debo-rah.j.neubek@nasa.gov
NR 40
TC 1
Z9 1
U1 1
U2 11
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1098-1241
J9 SYSTEMS ENG
JI Syst. Eng.
PD SPR
PY 2013
VL 16
IS 1
BP 71
EP 86
DI 10.1002/sys.21219
PG 16
WC Engineering, Industrial; Operations Research & Management Science
SC Engineering; Operations Research & Management Science
GA 076VT
UT WOS:000313987700005
ER
PT J
AU Blackwell, WJ
Adams, IS
AF Blackwell, William J.
Adams, Ian S.
TI The IEEE GRSS Frequency Allocations in Remote Sensing (FARS) Technical
Committee
SO IEEE GEOSCIENCE AND REMOTE SENSING MAGAZINE
LA English
DT Article
C1 [Blackwell, William J.] MIT, Lincoln Lab, Cambridge, MA 02139 USA.
[Adams, Ian S.] Naval Res Lab, Washington, DC 20375 USA.
RP Blackwell, WJ (reprint author), MIT, Lincoln Lab, Cambridge, MA 02139 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 2168-6831
J9 IEEE GEOSC REM SEN M
JI IEEE Geosci. Remote Sens. Mag.
PD MAR
PY 2013
VL 1
IS 1
BP 59
EP 61
DI 10.1109/MGRS.2013.2244698
PG 3
WC Geochemistry & Geophysics; Remote Sensing; Imaging Science &
Photographic Technology
SC Geochemistry & Geophysics; Remote Sensing; Imaging Science &
Photographic Technology
GA V45AR
UT WOS:000209790000005
ER
PT J
AU Henderson, DR
Gochenour, Z
AF Henderson, David R.
Gochenour, Zachary
TI War and Presidential Greatness
SO INDEPENDENT REVIEW
LA English
DT Article
C1 [Henderson, David R.] Naval Postgrad Sch, Monterey, CA 93943 USA.
[Henderson, David R.] Stanford Univ, Hoover Inst, Stanford, CA 94305 USA.
[Gochenour, Zachary] George Mason Univ, Fairfax, VA 22030 USA.
RP Henderson, DR (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 23
TC 0
Z9 0
U1 0
U2 0
PU INDEPENDENT INST
PI OAKLAND
PA 100 SWAN WAY, OAKLAND, CA 94621 USA
SN 1086-1653
J9 INDEP REV
JI Indep. Rev.
PD SPR
PY 2013
VL 17
IS 4
BP 505
EP 516
PG 12
WC Economics; Political Science
SC Business & Economics; Government & Law
GA AQ4RI
UT WOS:000342787000002
ER
PT J
AU Truscott, TT
Belden, J
Nielson, JR
Daily, DJ
Thomson, SL
AF Truscott, Tadd T.
Belden, Jesse
Nielson, Joseph R.
Daily, David J.
Thomson, Scott L.
TI Determining 3D Flow Fields via Multi-camera Light Field Imaging
SO JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
LA English
DT Article
DE Physics; Issue 73; Mechanical Engineering; Fluid Mechanics; Engineering;
synthetic aperture imaging; light field; camera array; particle image
velocimetry; three dimensional; vector fields; image processing; auto
calibration; vocal chords; bubbles; flow; fluids
AB In the field of fluid mechanics, the resolution of computational schemes has outpaced experimental methods and widened the gap between predicted and observed phenomena in fluid flows. Thus, a need exists for an accessible method capable of resolving three-dimensional (3D) data sets for a range of problems. We present a novel technique for performing quantitative 3D imaging of many types of flow fields. The 3D technique enables investigation of complicated velocity fields and bubbly flows. Measurements of these types present a variety of challenges to the instrument. For instance, optically dense bubbly multiphase flows cannot be readily imaged by traditional, non-invasive flow measurement techniques due to the bubbles occluding optical access to the interior regions of the volume of interest. By using Light Field Imaging we are able to reparameterize images captured by an array of cameras to reconstruct a 3D volumetric map for every time instance, despite partial occlusions in the volume. The technique makes use of an algorithm known as synthetic aperture (SA) refocusing, whereby a 3D focal stack is generated by combining images from several cameras post-capture (1). Light Field Imaging allows for the capture of angular as well as spatial information about the light rays, and hence enables 3D scene reconstruction. Quantitative information can then be extracted from the 3D reconstructions using a variety of processing algorithms. In particular, we have developed measurement methods based on Light Field Imaging for performing 3D particle image velocimetry (PIV), extracting bubbles in a 3D field and tracking the boundary of a flickering flame. We present the fundamentals of the Light Field Imaging methodology in the context of our setup for performing 3DPIV of the airflow passing over a set of synthetic vocal folds, and show representative results from application of the technique to a bubble-entraining plunging jet.
C1 [Truscott, Tadd T.; Nielson, Joseph R.; Daily, David J.; Thomson, Scott L.] Brigham Young Univ, Dept Mech Engn, Provo, UT 84602 USA.
[Belden, Jesse] Naval Undersea Warfare Ctr, Newport, RI USA.
RP Truscott, TT (reprint author), Brigham Young Univ, Dept Mech Engn, Provo, UT 84602 USA.
EM truscott@byu.edu
FU NSF grant CMMI [1126862]; In-house Laboratory Independent Research
(ILIR) funds; NIH/NIDCD [R01DC009616]; University of Erlangen Graduate
School in Advanced Optical Technologies (SAOT); Rocky Mountain NASA
Space Grant Consortium
FX We would like to thank NSF grant CMMI #1126862 for funding the equipment
and development of the synthetic aperture algorithms at BYU, In-house
Laboratory Independent Research (ILIR) funds (monitored by Dr. Tony
Ruffa) for funding the equipment and development at NUWC Newport, and
NIH/NIDCD grant R01DC009616 for funding SLT, DJD and JRN and data
relating to the vocal fold experiments and the University of Erlangen
Graduate School in Advanced Optical Technologies (SAOT) for partial
support of SLT. Finally, the Rocky Mountain NASA Space Grant Consortium
for funding JRN.
NR 11
TC 1
Z9 1
U1 1
U2 15
PU JOURNAL OF VISUALIZED EXPERIMENTS
PI CAMBRIDGE
PA 1 ALEWIFE CENTER, STE 200, CAMBRIDGE, MA 02140 USA
SN 1940-087X
J9 JOVE-J VIS EXP
JI J. Vis. Exp.
PD MAR
PY 2013
IS 73
AR UNSP e4325
DI 10.3791/4325
PG 10
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA V36QW
UT WOS:000209226900005
PM 23486112
ER
PT J
AU Springborg, R
AF Springborg, Robert
TI GCC Countries as "Rentier States" Revisited
SO MIDDLE EAST JOURNAL
LA English
DT Review
C1 Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Springborg, R (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 32
TC 1
Z9 1
U1 0
U2 2
PU MIDDLE EAST INST
PI WASHINGTON
PA 1761 N ST NW, CIRCULATION DEPT, WASHINGTON, DC 20036-2882 USA
SN 0026-3141
J9 MIDDLE EAST J
JI Middle East J.
PD SPR
PY 2013
VL 67
IS 2
BP 301
EP 309
DI 10.3751/67.2.3
PG 9
WC Area Studies
SC Area Studies
GA AG2UT
UT WOS:000335273300008
ER
PT J
AU Hubbard, M
Barrick, D
Garfield, N
Pettigrew, J
Ohlmann, C
Gough, M
AF Hubbard, Maxwell
Barrick, Donald
Garfield, Newell
Pettigrew, Jim
Ohlmann, Carter
Gough, Matthew
TI A New Method for Estimating High-Frequency Radar Error Using Data from
Central San Francisco Bay
SO OCEAN SCIENCE JOURNAL
LA English
DT Article
DE HF radar; remote sensing; surface currents; sensor calibration; drifter;
instrument bias
ID SURFACE CURRENT MEASUREMENTS; HF RADAR; CURRENTS
AB This study offers a new method for estimating High-Frequency (HF) radar surface current velocity error in data comparisons with other types of instrumentation. A new method is needed in order to remove the zero-mean random spatial and temporal fluctuations present in surface-current measurements from all sensors. Conventional methods for calculating radar error when comparing with another instrument have included their root mean square differences and scatter plots that provide correlation coefficient and slope/intercept of the regression line. It seems that a meaningful estimate of radar error should attempt to remove both sensors' zero mean random fluctuations, inasmuch as possible. We offer and compare a method that does this. The method was tested on data collected in the Central San Francisco Bay, where GPS surface-drifter deployments were conducted within the coverage of four 42 MHz radars over six days in October of 2008. Drifters were continuously deployed in these areas over the sampling days, providing 525 usable drifter measurements. Drifter and radar measurements were averaged into thirty-minute time bins. The three-day long-term averages from the sampling areas were then subtracted from the thirtyminute averages to remove biases associated with comparisons done with short, disjoint time-sample periods. These were then used to develop methods that give radar error or bias after the random fluctuations have been removed. Results for error estimates in this study are commensurate with others where random fluctuations have been filtered, suggesting they are valid. The estimated error for the radars in the SF Bay is low, ranging from -7.57 cm/s to 0.59 cm/s.
C1 [Hubbard, Maxwell; Barrick, Donald] CODAR Ocean Sensors Ltd, Mountain View, CA 94043 USA.
[Garfield, Newell; Pettigrew, Jim] San Francisco State Univ, Romberg Tiburon Ctr Environm Studies, Tiburon, CA 94920 USA.
[Ohlmann, Carter] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Gough, Matthew] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Barrick, D (reprint author), CODAR Ocean Sensors Ltd, 1914 Plymouth St, Mountain View, CA 94043 USA.
EM don@codar.com
NR 12
TC 4
Z9 4
U1 0
U2 1
PU KOREA OCEAN RESEARCH DEVELOPMENT INST
PI SEOUL
PA P O BOX 29, SEOUL, 425-600, SOUTH KOREA
SN 1738-5261
EI 2005-7172
J9 OCEAN SCI J
JI Ocean Sci. J.
PD MAR
PY 2013
VL 48
IS 1
BP 105
EP 116
DI 10.1007/s12601-013-0009-y
PG 12
WC Marine & Freshwater Biology; Oceanography
SC Marine & Freshwater Biology; Oceanography
GA AG4ON
UT WOS:000335399800009
ER
PT J
AU Chen, W
Gao, BC
AF Chen, Wei
Gao, Bo-Cai
TI A Multispectral Decomposition Technique for the Recovery of True Sea
WiFS Top-of-Atmosphere Radiances
SO IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
LA English
DT Article
DE Multispectral decomposition transform (MDT) corrections; out-of-band
(OOB) corrections; OOB effects; OOB responses; spectral bandpass
correction
ID OCEAN
AB A method for correcting the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) out-of-band (OOB) effects in the Level-1B radiance data product through a multispectral decomposition transform (MDT) is described. The crosstalk information contained in multichannel spectral radiometer data provides the possibility of using the MDT technique to make the corrections. An MDT matrix for the SeaWiFS optical system is derived from the laboratory-measured filter transmittance functions. The OOB correction can be performed by a product between the SeaWiFS MDT matrix and a multispectral image vector. Performance of the SeaWiFS MDT method for the OOB correction is demonstrated by simulation results using hyperspectral data measured with both the AVIRIS and Hyperspectral Imager for the Coastal Ocean sensors. This OOB correction technique is very different from that currently implemented in the operational SeaWiFS data-processing software package.
C1 [Chen, Wei; Gao, Bo-Cai] USN, Remote Sensing Div, Res Lab, Washington, DC 20375 USA.
RP Chen, W (reprint author), USN, Remote Sensing Div, Res Lab, Code 7230, Washington, DC 20375 USA.
EM wei.chen@nrl.navy.mil; bgao@ccs.nrl.navy.mil
FU U.S. Office of Naval Research; Joint Polar Satellite System of NOAA and
NASA
FX Manuscript received March 19, 2012; revised May 18, 2012 and May 21,
2012; accepted June 1, 2012. This work was supported in part by the U.S.
Office of Naval Research and the Joint Polar Satellite System of NOAA
and NASA.
NR 7
TC 2
Z9 2
U1 0
U2 7
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1545-598X
J9 IEEE GEOSCI REMOTE S
JI IEEE Geosci. Remote Sens. Lett.
PD MAR
PY 2013
VL 10
IS 2
BP 288
EP 292
DI 10.1109/LGRS.2012.2203293
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 034VS
UT WOS:000310901600017
ER
PT J
AU Lewis, TG
AF Lewis, Ted G.
TI Cognitive stigmergy: A study of emergence in small-group social networks
SO COGNITIVE SYSTEMS RESEARCH
LA English
DT Article
DE Stigmergy; Self-organization; Emergence; Social network analysis;
Betweeness; Small world
ID SCALE-FREE NETWORKS; WORLD-WIDE-WEB; COMPLEX NETWORKS; HISTORY
AB This paper proposes a model and theory of leadership emergence whereby (1) small social groups are modeled as small world networks and a betweeness metric is shown to be a property of networks with strong leadership, and (2) a theory of group formation based on stigmergy explains how such networks evolve and form. Specifically, dominant actors are observed to emerge from simulations of artificial termites constructing a wood chip network in a random walk, suggesting a correlation between various preferential attachment rules and emergent network topologies. Three attachment rules are studied: maximizing node betweeness (intermediary power), maximizing node degree (node connectivity), and limiting radius (size of the network in terms of network distance). The simulation results suggest that a preference for maximizing betweeness produces networks with structure similar to the 62-node 9-11 terrorist network. Further simulations of emergent networks with small world properties (small radius) and high betweeness centrality (strong leader) are shown to match the topological structure of the 9-11 terrorist network, also. Interestingly, the same properties are not found in a small sampling of human made physical infrastructure networks such as power grids, transportation systems, water and pipeline networks, suggesting a difference between social network emergence and physical infrastructure emergence. Additionally, a contagion model is applied to random and structured networks to understand the dynamics of anti-leader sentiment (uprisings and counter-movements that challenge the status quo). For random networks, simulated pro-leader (pro-government) and anti-leader (pro-rebel) sentiments are propagated throughout a social network like opposing diseases to determine which sentiment eventually prevails. Simulations of the rise of rebel sentiment versus the ratio of rebel to government sentiment show that rebel sentiment rises on less than 100% rebel/government sentiment when government sentiment is high (strong leadership), but requires greater than 100% rebel/government sentiment when government sentiment is low (weak leadership). However, when applied to the structured 9-11 terrorist network, rebel sentiment is slow to rise against strong leadership, because of the high betweeness structure of the 9-11 network. These results suggest a theory of how and why human stigmergy evolves networks with strong leaders, and why successful social networks are resilient against anti-leader sentiment. The author concludes that a combination of small world and high betweeness structure explain how social networks emerge strong leadership structure and why the resulting networks are resilient against being overthrown by a dissenting majority. Published by Elsevier B.V.
C1 USN, Postgrad Sch, Ctr Homeland Def & Secur, Monterey, CA 93943 USA.
RP Lewis, TG (reprint author), USN, Postgrad Sch, Ctr Homeland Def & Secur, Monterey, CA 93943 USA.
EM tlewis@nps.edu
NR 28
TC 3
Z9 3
U1 1
U2 78
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1389-0417
J9 COGN SYST RES
JI Cogn. Syst. Res.
PD MAR
PY 2013
VL 21
BP 7
EP 21
DI 10.1016/j.cogsys.2012.06.002
PG 15
WC Computer Science, Artificial Intelligence; Neurosciences; Psychology,
Experimental
SC Computer Science; Neurosciences & Neurology; Psychology
GA 031MC
UT WOS:000310643900002
ER
PT J
AU Krall, J
Huba, JD
Fritts, DC
AF Krall, J.
Huba, J. D.
Fritts, D. C.
TI On the seeding of equatorial spread F by gravity waves
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID VERTICAL WINDS; THERMOSPHERE; IRREGULARITIES; TEMPERATURE; IONOSPHERE;
REGION
AB The Naval Research Laboratory three-dimensional simulation code SAMI3/ESF is used to study the response of the postsunset ionosphere to plane gravity waves. The effect of the vertical wind component of the wave is included as well as the effect of the background vertical wind, which can suppress equatorial spread F (ESF). It is shown that the strength of the coupling of the gravity wave to ESF increases with the vertical wavelength of the gravity wave. Long vertical wavelength modes (lambda > 100 km) are more effective for seeding ESF. Citation: Krall, J., J. D. Huba, and D. C. Fritts (2013), On the seeding of equatorial spread F by gravity waves, Geophys. Res. Lett., 40, 661-664, doi:10.1002/grl.50144.
C1 [Krall, J.; Huba, J. D.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Fritts, D. C.] GATS Inc, Boulder Div, Boulder, CO USA.
RP Krall, J (reprint author), USN, Res Lab, Div Plasma Phys, Code 6790,4555 Overlook Ave, Washington, DC 20375 USA.
EM jonathan.krall@nrl.navy.mil
FU Naval Research Laboratory Base Funds; NASA [NNH11CC67C, NNH12CC04C]
FX This work was supported by the Naval Research Laboratory Base Funds and
NASA (JK and JDH), and NASA contracts NNH11CC67C and NNH12CC04C (DF).
NR 35
TC 9
Z9 9
U1 0
U2 9
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD FEB 28
PY 2013
VL 40
IS 4
BP 661
EP 664
DI 10.1002/GRL.50144
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 129IE
UT WOS:000317831800001
ER
PT J
AU Tsai, HC
Elsberry, RL
AF Tsai, Hsiao-Chung
Elsberry, Russell L.
TI Detection of tropical cyclone track changes from the ECMWF ensemble
prediction system
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID GLOBAL ENSEMBLE; FORECASTS; CONSENSUS
AB A cluster analysis of the 51 member European Center for Medium-range Weather Forecasts ensemble forecast tracks of existing tropical storms from the THORPEX Interactive Grand Global Ensemble archive is utilized to detect multiple track solutions, and weighted-mean vector motion (WMVM) tracks are calculated for the ensemble tracks and for the individual track clusters. When three track clusters were present, larger errors occurred in the corresponding deterministic model forecast. Reliability of the European Center for Medium-range Weather Forecasts ensemble forecast tracks when two distinct clusters exist is examined in terms of the hit rates when the cluster with the larger number of members is selected. A larger hit rate is achieved if track clusters with at least 70%, 80%, or 90% of the members are selected. In these situations, the forecaster can select the WMVM tracks for those clusters and have confidence that a more accurate track than the overall WMVM track will generally be predicted. Citation: Tsai, H.-C., and R. L. Elsberry (2013), Detection of tropical cyclone track changes from the ECMWF ensemble prediction system, Geophys. Res. Lett., 40, 797-801, doi: 10.1002/grl.50172.
C1 [Tsai, Hsiao-Chung; Elsberry, Russell L.] USN, Postgrad Sch, Dept Meteorol, Grad Sch Engn & Appl Sci, Monterey, CA 93943 USA.
RP Elsberry, RL (reprint author), USN, Postgrad Sch, Dept Meteorol, 589 Dyer Rd, Monterey, CA 93943 USA.
EM Elsberry@nps.edu
FU Office of Naval Research Marine Meteorology section
FX Hsiao-Chung Tsai is a National Research Council post-doc at the Naval
Postgraduate School. He and Russell Elsberry are supported by the Office
of Naval Research Marine Meteorology section. Mrs. Penny Jones provided
skillful manuscript preparation assistance.
NR 16
TC 3
Z9 3
U1 0
U2 8
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD FEB 28
PY 2013
VL 40
IS 4
BP 797
EP 801
DI 10.1002/grl.50172
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 129IE
UT WOS:000317831800025
ER
PT J
AU Hou, WL
Jarosz, E
Woods, S
Goode, W
Weidemann, A
AF Hou, Weilin
Jarosz, Ewa
Woods, Sarah
Goode, Wesley
Weidemann, Alan
TI Impacts of underwater turbulence on acoustical and optical signals and
their linkage
SO OPTICS EXPRESS
LA English
DT Article
ID OCEANIC TURBULENCE; SCATTERING; MICROSTRUCTURE; POLARIZATION;
TEMPERATURE; RESTORATION; VISIBILITY; IMAGES; MODEL
AB Acoustical and optical signal transmission underwater is of vital interest for both civilian and military applications. The range and signal to noise during the transmission, as a function of system and water optical properties, in terms of absorption and scattering, determines the effectiveness of deployed electro-optical (EO) technology. The impacts from turbulence have been demonstrated to affect system performance comparable to those from particles by recent studies. This paper examines the impacts from underwater turbulence on both acoustic scattering and EO imaging degradation, and establishes a framework that can be used to correlate these. It is hypothesized here that underwater turbulence would influence the acoustic scattering cross section and the optical turbulence intensity coefficient in a similar manner. Data from a recent field campaign, Skaneateles Optical Turbulence Exercise (SOTEX, July, 2010) is used to examine the above relationship. Results presented here show strong correlation between the acoustic scattering cross-sections and the intensity coefficient related to the modulation transfer function of an EO imaging system. This significant finding will pave ways to utilize long range acoustical returns to predict EO system performance. (C)2013 Optical Society of America
C1 [Hou, Weilin; Jarosz, Ewa; Woods, Sarah; Goode, Wesley; Weidemann, Alan] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Hou, WL (reprint author), USN, Res Lab, Code 7333, Stennis Space Ctr, MS 39529 USA.
EM hou@nrlssc.navy.mil
NR 26
TC 9
Z9 10
U1 1
U2 15
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD FEB 25
PY 2013
VL 21
IS 4
BP 4367
EP 4375
DI 10.1364/OE.21.004367
PG 9
WC Optics
SC Optics
GA 104KU
UT WOS:000315992600043
PM 23481970
ER
PT J
AU Katzir, Y
Ferber, Y
Penano, R
Hubbard, RF
Sprangle, P
Zigler, A
AF Katzir, Y.
Ferber, Y.
Penano, R.
Hubbard, R. F.
Sprangle, P.
Zigler, A.
TI Boron Nitride plasma micro lens for high intensity laser pre-pulse
suppression
SO OPTICS EXPRESS
LA English
DT Article
ID TEMPORAL CONTRAST; FEMTOSECOND; PROPAGATION
AB We demonstrate that amplified spontaneous emission (ASE) and pre-pulses for high power lasers can be suppressed by propagating the pulse through a boron nitride plasma microlens. The microlens is created by ablating a boron-nitride (BN) disk with a central hole using an Nd:YAG laser. The plasma lens produced in the ablation process exhibits different focal lengths for the high intensity main pulse and low intensity pre-pulse that increases the main pulse/pre-pulse contrast ratio by one order of magnitude while maintaining high transmittance of the pulse energy. (C) 2013 Optical Society of America
C1 [Katzir, Y.; Ferber, Y.; Zigler, A.] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel.
[Penano, R.; Hubbard, R. F.; Sprangle, P.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Katzir, Y (reprint author), Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel.
EM yiftach.katzir@mail.huji.ac.il
NR 13
TC 2
Z9 2
U1 2
U2 15
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD FEB 25
PY 2013
VL 21
IS 4
BP 5077
EP 5085
DI 10.1364/OE.21.005077
PG 9
WC Optics
SC Optics
GA 104KU
UT WOS:000315992600115
PM 23482042
ER
PT J
AU Goldbogen, JA
Calambokidis, J
Friedlaender, AS
Francis, J
DeRuiter, SL
Stimpert, AK
Falcone, E
Southall, BL
AF Goldbogen, Jeremy A.
Calambokidis, John
Friedlaender, Ari S.
Francis, John
DeRuiter, Stacy L.
Stimpert, Alison K.
Falcone, Erin
Southall, Brandon L.
TI Underwater acrobatics by the world's largest predator: 360 degrees
rolling manoeuvres by lunge-feeding blue whales
SO BIOLOGY LETTERS
LA English
DT Article
DE Mysticeti; manoeuvrability; foraging
ID RORQUAL WHALES; FIN WHALES; BEHAVIOR; PERFORMANCE; KINEMATICS;
MECHANICS; CAPACITY; WATER; SIZE; TAG
AB The extreme body size of blue whales requires a high energy intake and therefore demands efficient foraging strategies. As an obligate lunge feeder on aggregations of small zooplankton, blue whales engulf a large volume of prey-laden water in a single, rapid gulp. The efficiency of this feeding mechanism is strongly dependent on the amount of prey that can be captured during each lunge, yet food resources tend to be patchily distributed in both space and time. Here, we measured the three-dimensional kinematics and foraging behaviour of blue whales feeding on krill, using suction-cup attached multi-sensor tags. Our analyses revealed 3608 rolling lunge-feeding manoeuvres that reorient the body and position the lower jaws so that a krill patch can be engulfed with the whale's body inverted. We also recorded these rolling behaviours when whales were in a searching mode in between lunges, suggesting that this behaviour also enables the whale to visually process the prey field and maximize foraging efficiency by surveying for the densest prey aggregations. These results reveal the complex manoeuvrability that is required for large rorqual whales to exploit prey patches and highlight the need to fully understand the three-dimensional interactions between predator and prey in the natural environment.
C1 [Goldbogen, Jeremy A.; Calambokidis, John; Falcone, Erin] Cascadia Res Collect, Olympia, WA 98501 USA.
[Friedlaender, Ari S.] Duke Univ, Marine Lab, Beaufort, NC 28516 USA.
[Francis, John] Natl Geog, Washington, DC 20036 USA.
[DeRuiter, Stacy L.] Univ St Andrews, Ctr Res Ecol & Environm Modelling, St Andrews KY16 9LZ, Fife, Scotland.
[Stimpert, Alison K.] USN, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA.
[Friedlaender, Ari S.; Southall, Brandon L.] Southall Environm Associates, Aptos, CA 95003 USA.
RP Goldbogen, JA (reprint author), Cascadia Res Collect, 218,1-2 W 4th Ave, Olympia, WA 98501 USA.
EM jgoldbogen@gmail.com
NR 20
TC 23
Z9 23
U1 4
U2 43
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1744-9561
J9 BIOL LETTERS
JI Biol. Lett.
PD FEB 23
PY 2013
VL 9
IS 1
AR 20120986
DI 10.1098/rsbl.2012.0986
PG 5
WC Biology; Ecology; Evolutionary Biology
SC Life Sciences & Biomedicine - Other Topics; Environmental Sciences &
Ecology; Evolutionary Biology
GA 070MB
UT WOS:000313509400046
PM 23193050
ER
PT J
AU Foos, EE
AF Foos, Edward E.
TI The Complex Interaction of Spectroscopic Shifts and Electronic
Properties in Semiconductor Nanocrystal Films
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID COLLOIDAL QUANTUM DOTS; BINARY NANOPARTICLE SUPERLATTICES;
ELECTRICAL-PROPERTIES; PBSE NANOCRYSTALS; SURFACE LIGANDS; THIN-FILMS;
SOLIDS; EXCITON; PHOTOVOLTAICS; CONFINEMENT
AB Absorption spectroscopy has traditionally served as a powerful technique for the study of solution synthesized semiconductor nanocrystals, enabling information on the size, dispersity, concentration, and overall quality of a sample to be obtained quickly and easily. When thin, densely packed films of these materials are produced through ligand exchange, spectroscopic shifts to both higher and lower energy are observed. Reduction of the internanocrystal distance can result in both a change to the overall dielectric constant of the film as well as increased electronic coupling, producing a redshift. At the same time, surface oxidation has the effect of increasing the confinement, producing a blueshift. This Perspective focuses on PbSe, a material of current interest, and the potential for correlating these spectroscopic shifts to optoelectronic properties, highlighting both recent work in the literature and areas in need of additional study.
C1 USN, Res Lab, Div Chem, Washington, DC 20375 USA.
RP Foos, EE (reprint author), USN, Res Lab, Div Chem, Washington, DC 20375 USA.
FU Office of Naval Research (ONR)
FX The Office of Naval Research (ONR) is gratefully acknowledged for
financial support of this work. In addition, Drs. J. Boercker, W. Heuer
(USNA), A. Smith, J. Tischler, and W. Yoon are acknowledged for many
helpful discussions and contributions to the carboxylic acid work
conducted at NRL.
NR 57
TC 9
Z9 9
U1 0
U2 33
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD FEB 21
PY 2013
VL 4
IS 4
BP 625
EP 632
DI 10.1021/jz3021364
PG 8
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 096VE
UT WOS:000315432000013
PM 26281877
ER
PT J
AU Kruger, AJ
Richter, MJ
Carr, JS
Najita, JR
Moerchen, MM
Doppmann, GW
Seifahrt, A
AF Kruger, Andrew J.
Richter, Matthew J.
Carr, John S.
Najita, Joan R.
Moerchen, Margaret M.
Doppmann, Greg W.
Seifahrt, Andreas
TI THE CURIOUS CASE OF GLASS I: HIGH IONIZATION AND VARIABILITY OF
DIFFERENT TYPES
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE accretion, accretion disks; infrared: stars; protoplanetary disks;
stars: individual (Glass I); stars: pre-main sequence
ID T-TAURI STARS; IRRADIATED PROTOPLANETARY DISKS; YOUNG CIRCUMSTELLAR
DISKS; STRUCTURE LINE EMISSION; CHAMELEON DARK CLOUD; MAIN-SEQUENCE
STARS; ALL-SKY SURVEY; SYMBIOTIC STARS; FORMING REGION; NE-II
AB Our Spitzer IRS observation of the infrared companion Glass Ib revealed fine-structure emission with high ionization ([Ne III]/[Ne II] = 2.1 and [S IV]/[S III] = 0.6) that indicates that the gas is likely illuminated by hard radiation. While models suggest that extreme-ultraviolet radiation could be present in T Tauri stars, this is the first detection of [S IV] and such a high [Ne III]/[Ne II] ratio in a young star. We also find that Glass Ib displays the molecules HCN, CO2, and H2O in emission. Here we investigate the Glass I binary system and consider possible mechanisms that may have caused the high ionization, whether from an outflow or disk irradiation. We also model the spectral energy distributions of Glass Ia and Ib to test if the system is a young member of the Chameleon I star-forming region, and we consider other possible classifications for the system. We find that Glass Ib is highly variable, showing changes in continuum strength and emission features at optical, near-infrared, and mid-infrared wavelengths. The optical light curve indicates that a central stellar component in Glass Ib became entirely visible for 2.5 years beginning in mid-2002 and possibly displayed periodic variability with repeated, short-period dimming during that time. As the fine-structure emission was not detected in observations before or after our Spitzer IRS observation, we explore whether the variable nature of Glass Ib is related to the gas being highly ionized, possibly due to variable accretion or an X-ray flare.
C1 [Kruger, Andrew J.] Wilbur Wright Coll, Dept Phys Sci, Chicago, IL 60634 USA.
[Richter, Matthew J.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
[Carr, John S.] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Najita, Joan R.] Natl Opt Astron Observ, Tucson, AZ 85719 USA.
[Moerchen, Margaret M.] European So Observ, Santiago 3107, Chile.
[Moerchen, Margaret M.] Leiden Observ, NL-2300 RA Leiden, Netherlands.
[Doppmann, Greg W.] WM Keck Observ, Kamuela, HI 96743 USA.
[Seifahrt, Andreas] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
RP Kruger, AJ (reprint author), Wilbur Wright Coll, Dept Phys Sci, 4300 N Narragansett Ave, Chicago, IL 60634 USA.
FU National Science Foundation [AST-0708074]; NASA through contract RSA
issued by JPL/Caltech [1346810]; NASA
FX We thank Serge Correia, Giles Novak, Kevin Volk, John Lacy, and the
anonymous reviewer for their constructive help, comments, and
suggestions. Support for this work was provided by the National Science
Foundation under grant No. AST-0708074, and by NASA through contract RSA
No. 1346810, issued by JPL/Caltech. This work is based on observations
made with the Spitzer Space Telescope, the Gemini Observatory, and the
ESO Telescope at the Paranal Observatory under programme IDs
072.A-9005(A), 072.A-9016(A), 075.C-0335(A), and 084.C-1095(A). The
Spitzer Space Telescope is operated by the Jet Propulsion Laboratory,
California Institute of Technology under a contract with NASA. The
Gemini Observatory is operated by the Association of Universities for
Research in Astronomy, Inc., under a cooperative agreement with the NSF
on behalf of the Gemini partnership: the National Science Foundation
(United States), the Science and Technology FacilitiesCouncil (United
Kingdom), the National Research Council (Canada), CONICYT (Chile), the
Australian Research Council (Australia), Ministerio da Ciencia e
Tecnologia (Brazil), and Ministerio de Ciencia, Tecnologia e Innovacion
Productiva (Argentina). This paper has also made use of the SIMBAD
database, operated at CDS, Strasbourg, France. Basic research in
infrared astronomy at the Naval Research Laboratory is supported by 6.1
base funding.
NR 76
TC 2
Z9 2
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD FEB 20
PY 2013
VL 764
IS 2
AR 127
DI 10.1088/0004-637X/764/2/127
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 088CY
UT WOS:000314812600015
ER
PT J
AU Patsourakos, S
Vourlidas, A
Stenborg, G
AF Patsourakos, S.
Vourlidas, A.
Stenborg, G.
TI DIRECT EVIDENCE FOR A FAST CORONAL MASS EJECTION DRIVEN BY THE PRIOR
FORMATION AND SUBSEQUENT DESTABILIZATION OF A MAGNETIC FLUX ROPE
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: coronal mass ejections (CMEs)
ID X-RAY TELESCOPE; SOLAR-FLARES; ENERGY-RELEASE; FILAMENT ERUPTIONS;
ACCELERATION PHASE; CAVITY; MODEL; PROMINENCE; CME; RECONNECTION
AB Magnetic flux ropes play a central role in the physics of coronal mass ejections (CMEs). Although a flux-rope topology is inferred for the majority of coronagraphic observations of CMEs, a heated debate rages on whether the flux ropes pre-exist or whether they are formed on-the-fly during the eruption. Here, we present a detailed analysis of extreme-ultraviolet observations of the formation of a flux rope during a confined flare followed about 7 hr later by the ejection of the flux rope and an eruptive flare. The two flares occurred during 2012 July 18 and 19. The second event unleashed a fast (>1000 km s(-1)) CME. We present the first direct evidence of a fast CME driven by the prior formation and destabilization of a coronal magnetic flux rope formed during the confined flare on July 18.
C1 [Patsourakos, S.] Univ Ioannina, Dept Phys, Sect Astrogeophys, GR-45110 Ioannina, Greece.
[Vourlidas, A.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Stenborg, G.] George Mason Univ, Coll Sci, Sch Phys Astron & Computat Sci SPACS, Fairfax, VA 22030 USA.
RP Patsourakos, S (reprint author), Univ Ioannina, Dept Phys, Sect Astrogeophys, POB 1186, GR-45110 Ioannina, Greece.
RI Vourlidas, Angelos/C-8231-2009
OI Vourlidas, Angelos/0000-0002-8164-5948
FU European Union; Greek national funds through the Operational Program
"Education and Lifelong Learning" of the National Strategic Reference
Framework (NSRF)-Research Funding Program: Thales; FP7 Marie Curie Grant
[FP7-PEOPLE-2010-RG/268288]; NASA [S-136361-Y, NNX11AD40G]
FX The AIA data used here are courtesy of SDO (NASA) and the AIA
consortium. We thank the AIA team for the easy access to calibrated
data. We thank the referee for useful comments on the manuscript and S.
K. Antiochos, J. T. Karpen, S. Lukin, and J. Zhang for useful
discussions. The SECCHI data are courtesy of STEREO and the SECCHI
consortium. This research has been partly co-financed by the European
Union (European Social Fund; ESF) and Greek national funds through the
Operational Program "Education and Lifelong Learning" of the National
Strategic Reference Framework (NSRF)-Research Funding Program: Thales.
Investing in knowledge society through the European Social Fund. S. P.
acknowledges support from an FP7 Marie Curie Grant
(FP7-PEOPLE-2010-RG/268288). A. V. is supported by NASA contract
S-136361-Y to the Naval Research Laboratory. The work of G. S. was
partly funded by NASA contract NNX11AD40G.
NR 89
TC 65
Z9 66
U1 0
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD FEB 20
PY 2013
VL 764
IS 2
AR 125
DI 10.1088/0004-637X/764/2/125
PG 13
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 088CY
UT WOS:000314812600013
ER
PT J
AU Hartley, DJ
Janssens, RVF
Riedinger, LL
Riley, MA
Wang, X
Miller, S
Ayangeakaa, AD
Bertone, PF
Carpenter, MP
Chiara, CJ
Chowdhury, P
Garg, U
Gurdal, G
Hota, SS
Kondev, FG
Lauritsen, T
Ma, WC
Matta, J
McCutchan, EA
Mukhopadhyay, S
Pedicini, EE
Vanhoy, JR
Zhu, S
AF Hartley, D. J.
Janssens, R. V. F.
Riedinger, L. L.
Riley, M. A.
Wang, X.
Miller, S.
Ayangeakaa, A. D.
Bertone, P. F.
Carpenter, M. P.
Chiara, C. J.
Chowdhury, P.
Garg, U.
Guerdal, G.
Hota, S. S.
Kondev, F. G.
Lauritsen, T.
Ma, W. C.
Matta, J.
McCutchan, E. A.
Mukhopadhyay, S.
Pedicini, E. E.
Vanhoy, J. R.
Zhu, S.
TI Multiple band structures in Re-169,Re-170: Search for the wobbling mode
in Re-169, and residual-interaction analysis of structures in Re-170
SO PHYSICAL REVIEW C
LA English
DT Article
ID HIGH-SPIN STRUCTURE; COINCIDENCE DATA; BETA-DECAY; EXCITATIONS; NUCLEI;
CONFIGURATION; ISOTOPES; LU-165; PHONON
AB Although the observation of wobbling was once thought to be possibly confined to lutetium isotopes in N approximate to 94 nuclei, the identification of this exotic collective mode in Ta-167 has raised the question of the role of the proton Fermi surface with regard to this phenomenon. To investigate this issue, an experiment was performed to populate high-spin states in the N = 94 nucleus Re-169. The heavy-ion reaction Mn-55 + Sn-118 was used in conjunction with Gammasphere to detect the emitted gamma rays. More than 130 new transitions were added to the Re-169 level scheme, including the first identification of the pi i(13/2) rotational sequence in this nucleus. This configuration is the structure on which all known wobbling sequences are based, but no wobbling band was observed, likely owing to the fact that the pi i(13/2) sequence is located at a relatively high energy in comparison with the other structures found in Re-169. Nine decay sequences are now established in this nucleus and are described within the context of the cranked shell model. In addition, significant extension of the level scheme of the odd-odd Re-170 nucleus was possible and a discussion of the residual interactions for the pi h(9/2)nu i(13/2) and pi i(13/2)nu i(13/2) configurations in this region is given as well. DOI: 10.1103/PhysRevC.87.024315
C1 [Hartley, D. J.; Pedicini, E. E.; Vanhoy, J. R.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
[Janssens, R. V. F.; Bertone, P. F.; Carpenter, M. P.; Chiara, C. J.; Lauritsen, T.; McCutchan, E. A.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Riedinger, L. L.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Riley, M. A.; Wang, X.; Miller, S.] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
[Ayangeakaa, A. D.; Garg, U.; Matta, J.; Mukhopadhyay, S.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Chiara, C. J.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Chiara, C. J.; Guerdal, G.; Kondev, F. G.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
[Chowdhury, P.; Hota, S. S.] Univ Massachusetts, Dept Phys, Lowell, MA 01854 USA.
[Ma, W. C.] Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA.
RP Hartley, DJ (reprint author), USN Acad, Dept Phys, Annapolis, MD 21402 USA.
RI Carpenter, Michael/E-4287-2015; Ayangeakaa, Akaa/F-3683-2015
OI Carpenter, Michael/0000-0002-3237-5734; Ayangeakaa,
Akaa/0000-0003-1679-3175
FU National Science Foundation [PHY-1203100, PHY-0754674, PHY10-68192]; US
Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357,
DE-FG02-94ER40848, DE-FG02-96ER40983, DE-FG02-94ER40834]
FX The authors thank the ANL operations staff at Gammasphere and gratefully
acknowledge the efforts of J. P. Greene for target preparation. We thank
D. C. Radford and H. Q. Jin for their software support. This work is
funded by the National Science Foundation under Grants No. PHY-1203100
(USNA), No. PHY-0754674 (FSU), and No. PHY10-68192 (ND), as well as by
the US Department of Energy, Office of Nuclear Physics, under Contracts
No. DE-AC02-06CH11357 (ANL), No. DE-FG02-94ER40848 (UML), No.
DE-FG02-96ER40983 (UT), and No. DE-FG02-94ER40834 (UMCP).
NR 34
TC 6
Z9 6
U1 2
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD FEB 20
PY 2013
VL 87
IS 2
AR 024315
DI 10.1103/PhysRevC.87.024315
PG 15
WC Physics, Nuclear
SC Physics
GA 092UI
UT WOS:000315148000003
ER
PT J
AU Kamykowski, D
Pridgen, KG
Morrison, JM
McCulloch, AA
Nyadjro, ES
Thomas, CA
Sinclair, GA
AF Kamykowski, D.
Pridgen, K. Grabowski
Morrison, J. M.
McCulloch, A. A.
Nyadjro, E. S.
Thomas, C. A.
Sinclair, G. A.
TI Cold front induced changes on the Florida panhandle shelf during October
2008
SO CONTINENTAL SHELF RESEARCH
LA English
DT Article
DE Karenia brevis; Pycnocline erosion; Winter mixing; Hydrographic
transition; Pigment taxonomy; Gulf of Mexico
ID KARENIA-BREVIS; CONTINENTAL-SHELF; CLASS ABUNDANCES; HPLC MEASUREMENTS;
PHYTOPLANKTON; CIRCULATION; SEDIMENTS; CHEMTAX; GROWTH; DINOFLAGELLATE
AB A significant step transition between seasonally stratified and destratified hydrographic conditions occurred during an October 2008 cruise to the Florida Panhandle Shelf along a cross-shelf transect that was sampled before and after a cold front passed through the area. Meteorological measurements from nearby ocean and land-based stations characterized the event. Cross-shelf continuous Acrobat profiles and discrete CTD stations characterized water column hydrographic patterns, while mid-shelf multicorer and box corer samples characterized sediment texture and nutrients. Water samples collected from selected depths biased toward the sediment interface were analyzed for nutrient content and phytoplankton community composition. Pre-front, the cross-shelf water column exhibited vertical stratification with complex temperature and salinity patterns. A prominent near-bottom chlorophyll a maximum of similar to 1.5 mu g L-1 between the 25-35 m isobaths occurred with the 1% light level at similar to 18 m depth and a near-bottom nitrate+nitrite (NO3-+NO2-) maximum >3 mu M between the 30-40 m isobaths. HPLC-determined phytoplankton community composition in the near-bottom chlorophyll a maximum consisted of gyroxanthin-containing dinoflagellates (Karenia brevis) and less abundant diatoms, both verified by FlowCAM analysis, mixed with detectable cryptophytes and chlorophytes. Sediment trends based on limited core replicates suggested the sediments were a potential source of nutrients to near-bottom populations of K. brevis and that shell hash could provide abundant pore space for K. brevis incursions. Between the 40-50 m isobaths, diatoms, cryptophytes and chlorophytes dominated near-bottom, gyroxanthin-containing dinoflagellates and prasinophytes occurred throughout the water column, and cyanophytes dominated near-surface. Post-front, the cross-shelf water column exhibited destratification with temperature and salinity increasing offshore. A chlorophyll a maximum of similar to 0.75 mu g Chl a L-1 left the sediment between 25-35 m isobaths and extended offshore especially in the lower water column with the 1% light level at similar to 15 m depth and NO3-+NO2- concentrations similar to 2 mu M to the 60 m isobath. HPLC-determined phytoplankton community composition of the offshore plume retained the signature of gyroxanthin-containing dinoflagellates and chlorophytes. Between the 30-50 m isobaths, prasinophytes increased in the lower water column, while cyanophytes increased at all depths across the shelf. The observed step transition from stratification to destratification on the Florida Panhandle Shelf contributed to altered phytoplankton community patterns in response to predominant downwelling favorable winds. Pre-front, K. brevis cells were broadly distributed cross-shelf, but concentrated near-bottom between the 25-35 m isobaths and staged for prolific bloom seeding in response to the upwelling favorable west winds more typical of spring-summer. Post-front, K. brevis cells were mixed throughout the mid-shelf water column and were staged for diffuse bloom seeding in response to either the downwelling or upwelling favorable winds occurring fall-winter. Cyanophytes located predominantly near-surface offshore pre-front, were ubiquitous cross-shelf and more closely associated with K. brevis post-front. (C) 2013 Elsevier Ltd. All rights reserved.
C1 [Kamykowski, D.; Thomas, C. A.] N Carolina State Univ, Raleigh, NC 27695 USA.
[Pridgen, K. Grabowski] USN, Oceanog Off, Stennis Space Ctr, MS 39529 USA.
[Morrison, J. M.] Univ N Carolina, Ctr Marine Sci, Wilmington, NC 28401 USA.
[McCulloch, A. A.] Oregon State Univ, Hatfield Marine Sci Ctr, Newport, OR 97365 USA.
[Nyadjro, E. S.] Univ S Carolina, Dept Earth & Ocean Sci, Columbia, SC 29208 USA.
[Sinclair, G. A.] Louisiana Univ Marine Consortium, Defelice Ctr, Chauvin, LA 70344 USA.
RP Kamykowski, D (reprint author), N Carolina State Univ, Raleigh, NC 27695 USA.
EM dkamyko@ncsu.edu
FU NSF [OCE-0726271]
FX NSF grant OCE-0726271 awarded to Kamykowski/Janowitz/ Thomas/Morrison
supported the work. We thank the R/V Pelican crew and the LUMCON staff
for their help and cooperation. PAR data were obtained from National
Oceanographic and Atmospheric Association (NOAA), Office of Ocean and
Coastal Resource Management, National Estuarine Research Reserve
System-wide Monitoring Program, Centralized Data Management Office,
Baruch Marine Field Lab, University of South Carolina (http://
cdmo.baruch.sc.edu). Air pressure, wind speed and water temperature
measured at NOAA Buoy (NB) 42039 (29.212 degrees N 88.207 degrees W)
were obtained from U.S. Department of Commerce, NOAA, National Weather
Service, National Data Buoy Center (http://www.ndbc.noaa.gov/). HPLC
samples were run in the laboratory of Dr. J.L. Pinckney, University of
South Carolina.
NR 52
TC 5
Z9 5
U1 1
U2 32
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0278-4343
J9 CONT SHELF RES
JI Cont. Shelf Res.
PD FEB 15
PY 2013
VL 54
BP 52
EP 66
DI 10.1016/j.csr.2012.12.006
PG 15
WC Oceanography
SC Oceanography
GA 106RV
UT WOS:000316163300005
ER
PT J
AU Peterson, D
Wang, J
Ichoku, C
Hyer, E
Ambrosia, V
AF Peterson, David
Wang, Jun
Ichoku, Charles
Hyer, Edward
Ambrosia, Vincent
TI A sub-pixel-based calculation of fire radiative power from MODIS
observations: 1 Algorithm development and initial assessment
SO REMOTE SENSING OF ENVIRONMENT
LA English
DT Article
DE Fire; Wildfire; Biomass burning; Fire radiative power (FRP); MODIS; Fire
area; Fire temperature; Sub-pixel; Fire detection; Airborne
ID SPECTRAL MIXTURE ANALYSIS; BOREAL FOREST-FIRES; INFRARED DATA; SENSOR
DATA; EOS-MODIS; SATELLITE; TEMPERATURE; AVHRR; PRODUCTS; WILDFIRE
AB Developed as a quantitative measurement of fire intensity, fire radiative power (FRP) and the potential applications to smoke plume injection heights, are currently limited by the pixel resolution of a satellite sensor. As a result, this study, the first in a two-part series, develops a new sub-pixel-based calculation of fire radiative power (FRPf) for fire pixels detected at 1 km(2) nominal spatial resolution by the MODerate Resolution Imaging Spectroradiometer (MODIS) fire detection algorithm (collection 5), which is subsequently applied to several large wildfire events in California. The methodology stems from the heritage of earlier bi-spectral retrievals of sub-pixel fire area and temperature. However, in the current investigation, a radiative transfer model is incorporated to remove solar effects and account for atmospheric effects as a function of Earth-satellite geometry at 3.96 and 11 mu m (MODIS fire detection channels). The retrieved sub-pixel fire (flaming) area is assessed via the multispectral, high-resolution data (3-50 m) obtained from the Autonomous Modular Sensor (AMS), flown aboard the NASA Ikhana unmanned aircraft. With fire sizes ranging from 0.001 to 0.02 km(2), pixel-level fire area comparisons between MODIS and AMS are highly variable, regardless of the viewing zenith angle, and show a low bias with a modest correlation (R=0.59). However, when lower confidence fire pixels and point-spread-function effects (fire hot spots on the pixel edge) are removed, the correlation becomes much stronger (R=0.84) and the variability between MODIS and AMS is reduced. To account for these random errors via averaging, two clustering techniques are employed and the resulting AMS and MODIS comparisons of fire area, after correcting for overlapping MODIS pixels, are even more encouraging (R=0.91). Drawing from the retrieved fire area and temperature, the FRPf is calculated and compared to the current MODIS pixel area-based FRP. While the two methods are strongly correlated (R=0.93), the FRPf, in combination with retrieved fire cluster area, allows a large fire burning at a low intensity to be separated from a small fire burning at a high intensity. Similarly, the flux of FRPf over the retrieved fire area can be calculated, allowing for improved estimates of smoke plume injection heights in modeling studies and creating potential applications for the future VIIRS and GOES-R fire detection algorithms. (C) 2012 Elsevier Inc. All rights reserved.
C1 [Peterson, David; Wang, Jun] Univ Nebraska, Lincoln, NE 68588 USA.
[Ichoku, Charles] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Hyer, Edward] USN, Res Lab, Monterey, CA 93940 USA.
[Ambrosia, Vincent] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA.
RP Peterson, D (reprint author), Univ Nebraska, Dept Earth & Atmospher Sci, 130 Bessey Hall, Lincoln, NE 68588 USA.
EM david.peterson@huskers.unl.edu; jwang7@unl.edu;
charles.m.ichoku@nasa.gov; edward.hyer@nrlmry.navy.mil;
vincent.g.ambrosia@nasa.gov
RI Ichoku, Charles/E-1857-2012; Wang, Jun/A-2977-2008; Hyer,
Edward/E-7734-2011; peterson, david/L-2350-2016
OI Ichoku, Charles/0000-0003-3244-4549; Wang, Jun/0000-0002-7334-0490;
Hyer, Edward/0000-0001-8636-2026;
FU NASA Applied Science award [NNX09AT09G]; NASA RA award [NNH07AF47I]
FX We are grateful to the AMS wildfire measurement team at the NASA Ames
Research Center for providing the airborne (AMS) fire data used in this
study. We thank Luke Ellison at the NASA Goddard Space Flight Center for
his work with overlapping MODIS pixels. We also thank Dr. Mark Anderson,
Dr. John Lenters, and Dr. Bob Oglesby at the University of Nebraska -
Lincoln and Dr. Wilfrid Schroeder at the University of Maryland -
College Park for their constructive comments. The project was funded by
the NASA Earth and Space Science Fellowship (to D. Peterson) and the
NASA New Investigator Program (to Dr. Jun Wang). Dr. Hyer's
participation was funded by NASA Applied Science award #NNX09AT09G and
NASA R&A award #NNH07AF47I.
NR 78
TC 22
Z9 22
U1 3
U2 45
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0034-4257
J9 REMOTE SENS ENVIRON
JI Remote Sens. Environ.
PD FEB 15
PY 2013
VL 129
BP 262
EP 279
DI 10.1016/j.rse.2012.10.036
PG 18
WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic
Technology
SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science &
Photographic Technology
GA 095BA
UT WOS:000315308300021
ER
PT J
AU Muller, A
Behrens, J
Giraldo, FX
Wirth, V
AF Mueller, Andreas
Behrens, Joern
Giraldo, Francis X.
Wirth, Volkmar
TI Comparison between adaptive and uniform discontinuous Galerkin
simulations in dry 2D bubble experiments
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Adaptive mesh refinement; Discontinuous Galerkin; IMEX; Meteorology; Dry
warm air bubble
ID NAVIER-STOKES EQUATIONS; SHALLOW-WATER MODEL; SEMIIMPLICIT FORMULATION;
SPECTRAL ELEMENT; CONVECTION; INSTABILITY; ALGORITHM; TRIANGLE; WEATHER;
CUMULUS
AB Adaptive mesh refinement generally aims to increase computational efficiency without compromising the accuracy of the numerical solution. However it is an open question in which regions the spatial resolution can actually be coarsened without affecting the accuracy of the result. This question is investigated for a specific example of dry atmospheric convection, namely the simulation of warm air bubbles. For this purpose a novel numerical model is developed that is tailored towards this specific application. The compressible Euler equations are solved with a discontinuous Galerkin method. Time integration is done with an IMEX-method and the dynamic grid adaptivity uses space filling curves via the AMATOS function library. So far the model is able to simulate dry flow in two-dimensional geometry without subgrid-scale modeling. The model is tested with three standard test cases.
An error indicator is introduced for a warm air bubble test case which allows one to compare the accuracy between different choices of refinement regions without knowing the exact solution. Essentially this is done by comparing features of the solution that are strongly sensitive to spatial resolution. For the rising warm air bubble the additional error by using adaptivity is smaller than 1% of the total numerical error if the average number of elements used for the adaptive simulation is about a factor of two times smaller than the number used for the simulation with the uniform fine-resolution grid. Correspondingly the adaptive simulation is almost two times faster than the uniform simulation. Furthermore the adaptive simulation is more accurate than a uniform simulation when both use the same CPU-time. (C) 2012 Elsevier Inc. All rights reserved.
C1 [Mueller, Andreas; Giraldo, Francis X.] USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
[Behrens, Joern] Univ Hamburg, D-20144 Hamburg, Germany.
[Wirth, Volkmar] Johannes Gutenberg Univ Mainz, Inst Atmospher Phys, D-55127 Mainz, Germany.
RP Muller, A (reprint author), USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
EM amueller@anmr.de; joern.behrens@zmaw.de; fxgirald@nps.edu;
vwirth@uni-mainz.de
RI Behrens, Jorn/A-1863-2013
OI Behrens, Jorn/0000-0001-9836-8716
FU German Research Foundation (Deutsche Forschungsgemeinschaft) [SPP 1276];
Office of Naval Research [PE-0602435N]
FX We are grateful to the reviewers for giving many excellent suggestions
for improving this paper. Financial support for this work was provided
by the priority program MetStrom (SPP 1276) of the German Research
Foundation (Deutsche Forschungsgemeinschaft). FXG gratefully
acknowledges the support of the Office of Naval Research through program
element PE-0602435N.
NR 38
TC 16
Z9 16
U1 2
U2 25
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 FEB 15
PY 2013
VL 235
BP 371
EP 393
DI 10.1016/j.jcp.2012.10.038
PG 23
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 079ET
UT WOS:000314153900021
ER
PT J
AU Ackermann, M
Ajello, M
Allafort, A
Baldini, L
Ballet, J
Barbiellini, G
Baring, MG
Bastieri, D
Bechtol, K
Bellazzini, R
Blandford, RD
Bloom, ED
Bonamente, E
Borgland, AW
Bottacini, E
Brandt, TJ
Bregeon, J
Brigida, M
Bruel, P
Buehler, R
Busetto, G
Buson, S
Caliandro, GA
Cameron, RA
Caraveo, PA
Casandjian, JM
Cecchi, C
Celik, O
Charles, E
Chaty, S
Chaves, RCG
Chekhtman, A
Cheung, CC
Chiang, J
Chiaro, G
Cillis, AN
Ciprini, S
Claus, R
Cohen-Tanugi, J
Cominsky, LR
Conrad, J
Corbel, S
Cutini, S
D'Ammando, F
de Angelis, A
de Palma, F
Dermer, CD
Silva, EDE
Drell, PS
Drlica-Wagner, A
Falletti, L
Favuzzi, C
Ferrara, EC
Franckowiak, A
Fukazawa, Y
Funk, S
Fusco, P
Gargano, F
Germani, S
Giglietto, N
Giommi, P
Giordano, F
Giroletti, M
Glanzman, T
Godfrey, G
Grenier, IA
Grondin, MH
Grove, JE
Guiriec, S
Hadasch, D
Hanabata, Y
Harding, AK
Hayashida, M
Hayashi, K
Hays, E
Hewitt, JW
Hill, AB
Hughes, RE
Jackson, MS
Jogler, T
Johannesson, G
Johnson, AS
Kamae, T
Kataoka, J
Katsuta, J
Knodlseder, J
Kuss, M
Lande, J
Larsson, S
Latronico, L
Lemoine-Goumard, M
Longo, F
Loparco, F
Lovellette, MN
Lubrano, P
Madejski, GM
Massaro, F
Mayer, M
Mazziotta, MN
McEnery, JE
Mehault, J
Michelson, PF
Mignani, RP
Mitthumsiri, W
Mizuno, T
Moiseev, AA
Monzani, ME
Morselli, A
Moskalenko, IV
Murgia, S
Nakamori, T
Nemmen, R
Nuss, E
Ohno, M
Ohsugi, T
Omodei, N
Orienti, M
Orlando, E
Ormes, JF
Paneque, D
Perkins, JS
Pesce-Rollins, M
Piron, F
Pivato, G
Raino, S
Rando, R
Razzano, M
Razzaque, S
Reimer, A
Reimer, O
Ritz, S
Romoli, C
Sanchez-Conde, M
Schulz, A
Sgro, C
Simeon, PE
Siskind, EJ
Smith, DA
Spandre, G
Spinelli, P
Stecker, FW
Strong, AW
Suson, DJ
Tajima, H
Takahashi, H
Takahashi, T
Tanaka, T
Thayer, JG
Thayer, JB
Thompson, DJ
Thorsett, SE
Tibaldo, L
Tibolla, O
Tinivella, M
Troja, E
Uchiyama, Y
Usher, TL
Vandenbroucke, J
Vasileiou, V
Vianello, G
Vitale, V
Waite, AP
Werner, M
Winer, BL
Wood, KS
Wood, M
Yamazaki, R
Yang, Z
Zimmer, S
AF Ackermann, M.
Ajello, M.
Allafort, A.
Baldini, L.
Ballet, J.
Barbiellini, G.
Baring, M. G.
Bastieri, D.
Bechtol, K.
Bellazzini, R.
Blandford, R. D.
Bloom, E. D.
Bonamente, E.
Borgland, A. W.
Bottacini, E.
Brandt, T. J.
Bregeon, J.
Brigida, M.
Bruel, P.
Buehler, R.
Busetto, G.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Casandjian, J. M.
Cecchi, C.
Celik, O.
Charles, E.
Chaty, S.
Chaves, R. C. G.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Chiaro, G.
Cillis, A. N.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Corbel, S.
Cutini, S.
D'Ammando, F.
de Angelis, A.
de Palma, F.
Dermer, C. D.
do Couto e Silva, E.
Drell, P. S.
Drlica-Wagner, A.
Falletti, L.
Favuzzi, C.
Ferrara, E. C.
Franckowiak, A.
Fukazawa, Y.
Funk, S.
Fusco, P.
Gargano, F.
Germani, S.
Giglietto, N.
Giommi, P.
Giordano, F.
Giroletti, M.
Glanzman, T.
Godfrey, G.
Grenier, I. A.
Grondin, M. -H.
Grove, J. E.
Guiriec, S.
Hadasch, D.
Hanabata, Y.
Harding, A. K.
Hayashida, M.
Hayashi, K.
Hays, E.
Hewitt, J. W.
Hill, A. B.
Hughes, R. E.
Jackson, M. S.
Jogler, T.
Johannesson, G.
Johnson, A. S.
Kamae, T.
Kataoka, J.
Katsuta, J.
Knoedlseder, J.
Kuss, M.
Lande, J.
Larsson, S.
Latronico, L.
Lemoine-Goumard, M.
Longo, F.
Loparco, F.
Lovellette, M. N.
Lubrano, P.
Madejski, G. M.
Massaro, F.
Mayer, M.
Mazziotta, M. N.
McEnery, J. E.
Mehault, J.
Michelson, P. F.
Mignani, R. P.
Mitthumsiri, W.
Mizuno, T.
Moiseev, A. A.
Monzani, M. E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Nakamori, T.
Nemmen, R.
Nuss, E.
Ohno, M.
Ohsugi, T.
Omodei, N.
Orienti, M.
Orlando, E.
Ormes, J. F.
Paneque, D.
Perkins, J. S.
Pesce-Rollins, M.
Piron, F.
Pivato, G.
Raino, S.
Rando, R.
Razzano, M.
Razzaque, S.
Reimer, A.
Reimer, O.
Ritz, S.
Romoli, C.
Sanchez-Conde, M.
Schulz, A.
Sgro, C.
Simeon, P. E.
Siskind, E. J.
Smith, D. A.
Spandre, G.
Spinelli, P.
Stecker, F. W.
Strong, A. W.
Suson, D. J.
Tajima, H.
Takahashi, H.
Takahashi, T.
Tanaka, T.
Thayer, J. G.
Thayer, J. B.
Thompson, D. J.
Thorsett, S. E.
Tibaldo, L.
Tibolla, O.
Tinivella, M.
Troja, E.
Uchiyama, Y.
Usher, T. L.
Vandenbroucke, J.
Vasileiou, V.
Vianello, G.
Vitale, V.
Waite, A. P.
Werner, M.
Winer, B. L.
Wood, K. S.
Wood, M.
Yamazaki, R.
Yang, Z.
Zimmer, S.
TI Detection of the Characteristic Pion-Decay Signature in Supernova
Remnants
SO SCIENCE
LA English
DT Article
ID GAMMA-RAY EMISSION; LARGE-AREA TELESCOPE; IC 443; COSMIC-RAYS; FERMI
LAT; SNR W44; ACCELERATION; CLOUDS; DISCOVERY; RADIATION
AB Cosmic rays are particles (mostly protons) accelerated to relativistic speeds. Despite wide agreement that supernova remnants (SNRs) are the sources of galactic cosmic rays, unequivocal evidence for the acceleration of protons in these objects is still lacking. When accelerated protons encounter interstellar material, they produce neutral pions, which in turn decay into gamma rays. This offers a compelling way to detect the acceleration sites of protons. The identification of pion-decay gamma rays has been difficult because high-energy electrons also produce gamma rays via bremsstrahlung and inverse Compton scattering. We detected the characteristic pion-decay feature in the gamma-ray spectra of two SNRs, IC 443 and W44, with the Fermi Large Area Telescope. This detection provides direct evidence that cosmic-ray protons are accelerated in SNRs.
C1 [Ackermann, M.; Mayer, M.; Schulz, A.] Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany.
[Ajello, M.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
[Allafort, A.; Bechtol, K.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Bottacini, E.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; do Couto e Silva, E.; Drell, P. S.; Drlica-Wagner, A.; Franckowiak, A.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Hill, A. B.; Jogler, T.; Johnson, A. S.; Kamae, T.; Katsuta, J.; Lande, J.; Madejski, G. M.; Massaro, F.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Omodei, N.; Orlando, E.; Paneque, D.; Reimer, A.; Reimer, O.; Sanchez-Conde, M.; Simeon, P. E.; Tajima, H.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Uchiyama, Y.; Usher, T. L.; Vandenbroucke, J.; Vianello, G.; Waite, A. P.; Wood, M.] Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA.
[Allafort, A.; Bechtol, K.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Bottacini, E.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; do Couto e Silva, E.; Drell, P. S.; Drlica-Wagner, A.; Franckowiak, A.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Hill, A. B.; Jogler, T.; Johnson, A. S.; Kamae, T.; Katsuta, J.; Lande, J.; Madejski, G. M.; Massaro, F.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Omodei, N.; Orlando, E.; Paneque, D.; Reimer, A.; Reimer, O.; Sanchez-Conde, M.; Simeon, P. E.; Tajima, H.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Uchiyama, Y.; Usher, T. L.; Vandenbroucke, J.; Vianello, G.; Waite, A. P.; Wood, M.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Baldini, L.] Univ Pisa, I-56127 Pisa, Italy.
[Baldini, L.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Ballet, J.; Casandjian, J. M.; Chaty, S.; Chaves, R. C. G.; Corbel, S.; Grenier, I. A.] Univ Paris Diderot, Serv Astrophys, Lab AIM, CEA Saclay,CEA IRFU,CNRS, F-91191 Gif Sur Yvette, France.
[Barbiellini, G.; Longo, F.] Ist Nazl Fis Nucl, Sezione Trieste, I-34127 Trieste, Italy.
[Barbiellini, G.; Longo, F.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Baring, M. G.] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA.
[Bastieri, D.; Busetto, G.; Buson, S.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Bastieri, D.; Busetto, G.; Buson, S.; Chiaro, G.; Pivato, G.; Rando, R.; Romoli, C.; Tibaldo, L.] Univ Padua, Dipartimento Fis & Astron G Galilei, I-35131 Padua, Italy.
[Bellazzini, R.; Bregeon, J.; Kuss, M.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.; Tinivella, M.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Bonamente, E.; Cecchi, C.; D'Ammando, F.; Germani, S.; Lubrano, P.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy.
[Brandt, T. J.; Celik, O.; Cillis, A. N.; Ferrara, E. C.; Guiriec, S.; Harding, A. K.; Hays, E.; Hewitt, J. W.; McEnery, J. E.; Nemmen, R.; Perkins, J. S.; Stecker, F. W.; Thompson, D. J.; Troja, E.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Raino, S.; Spinelli, P.] Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Bruel, P.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Caliandro, G. A.; Hadasch, D.] Inst Ciencies Espai IEEE CSIC, Barcelona 08193, Spain.
[Caraveo, P. A.] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy.
[Celik, O.; Moiseev, A. A.; Perkins, J. S.] CRESST, Greenbelt, MD 20771 USA.
[Celik, O.; Moiseev, A. A.; Perkins, J. S.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Celik, O.; Perkins, J. S.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA.
[Celik, O.; Perkins, J. S.] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA.
[Chekhtman, A.; Razzaque, S.] George Mason Univ, Coll Sci, Ctr Earth Observing & Space Res, Fairfax, VA 22030 USA.
[Chekhtman, A.; Cheung, C. C.; Razzaque, S.] USN, Res Lab, Washington, DC 20375 USA.
[Cheung, C. C.] USN, Acad Sci, Natl Res Council, Washington, DC 20001 USA.
[Chiaro, G.] Ist Nazl Fis Nucl, I-35131 Padua, Italy.
[Cillis, A. N.] Inst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina.
[Ciprini, S.] ASI Sci Data Ctr, I-00044 Rome, Italy.
[Cohen-Tanugi, J.; Falletti, L.; Mehault, J.; Nuss, E.; Piron, F.; Vasileiou, V.] Univ Montpellier 2, CNRS, IN2P3, Lab Universe & Particules Montpellier, Montpellier, France.
[Cominsky, L. R.] Sonoma State Univ, Dept Phys & Astron, Rohnert Pk, CA 94928 USA.
[Conrad, J.; Larsson, S.; Yang, Z.; Zimmer, S.] Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden.
[Conrad, J.; Jackson, M. S.; Larsson, S.; Yang, Z.; Zimmer, S.] Oskar Klein Ctr Cosmoparticle Phys, AlbaNova, SE-10691 Stockholm, Sweden.
[Conrad, J.] Royal Swedish Acad Sci, Stockholm, Sweden.
[Corbel, S.] Inst Univ France, F-75005 Paris, France.
[Cutini, S.; Giommi, P.] Agenzia Spaziale Italiana ASI Sci Data Ctr, I-00044 Rome, Italy.
[D'Ammando, F.] IASF Palermo, I-90146 Palermo, Italy.
[D'Ammando, F.] INAF Ist Astrofis Spaziale & Fis Cosm, I-00133 Rome, Italy.
[de Angelis, A.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy.
[de Angelis, A.] Ist Nazl Fis Nucl, Sez Trieste, Grp Coll Udine, I-33100 Udine, Italy.
[Dermer, C. D.; Grove, J. E.; Lovellette, M. N.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Fukazawa, Y.; Hanabata, Y.; Hayashi, K.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
[Giroletti, M.; Orienti, M.] INAF Ist Radioastron, I-40129 Bologna, Italy.
[Grondin, M. -H.] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany.
[Grondin, M. -H.] Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany.
[Hayashida, M.] Kyoto Univ, Grad Sch Sci, Dept Astron, Sakyo Ku, Kyoto 6068502, Japan.
[Hill, A. B.] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England.
[Hughes, R. E.; Winer, B. L.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA.
[Jackson, M. S.] Royal Inst Technol KTH, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden.
[Johannesson, G.] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland.
[Kataoka, J.; Nakamori, T.] Waseda Univ, Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan.
[Knoedlseder, J.] CNRS, IRAP, F-31028 Toulouse 4, France.
[Knoedlseder, J.] Univ Toulouse, UPS OMP, IRAP, GAHEC, F-31028 Toulouse, France.
[Larsson, S.] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden.
[Latronico, L.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Lemoine-Goumard, M.; Smith, D. A.] Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France.
[McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
[McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[Mignani, R. P.] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.
[Mizuno, T.; Ohsugi, T.] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan.
[Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Ohno, M.; Takahashi, T.] JAXA, Inst Space & Astronaut Sci, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan.
[Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Paneque, D.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Perkins, J. S.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Razzano, M.; Ritz, S.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Razzano, M.; Ritz, S.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Reimer, A.; Reimer, O.; Werner, M.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.
[Reimer, A.; Reimer, O.; Werner, M.] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria.
[Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA.
[Stecker, F. W.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
[Strong, A. W.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA.
[Tajima, H.] Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan.
[Tanaka, T.] Kyoto Univ, Grad Sch Sci, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan.
[Thorsett, S. E.] Willamette Univ, Dept Phys, Salem, OR 97031 USA.
[Tibolla, O.] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany.
[Troja, E.] NASA, Postdoctoral Program, Washington, DC USA.
[Vianello, G.] Consorzio Interuniv Fis Spaziale, I-10133 Turin, Italy.
[Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy.
[Yamazaki, R.] Aoyama Gakuin Univ, Dept Phys & Math, Sagamihara, Kanagawa 2525258, Japan.
RP Funk, S (reprint author), Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA.
EM funk@slac.stanford.edu; ttanaka@cr.scphys.kyoto-u.ac.jp;
uchiyama@slac.stanford.edu
RI Massaro, Francesco/L-9102-2016; Orlando, E/R-5594-2016; giglietto,
nicola/I-8951-2012; Rando, Riccardo/M-7179-2013; Hays,
Elizabeth/D-3257-2012; Reimer, Olaf/A-3117-2013; Moskalenko,
Igor/A-1301-2007; Mazziotta, Mario /O-8867-2015; Sgro,
Carmelo/K-3395-2016; Morselli, Aldo/G-6769-2011; Nemmen,
Rodrigo/O-6841-2014; Funk, Stefan/B-7629-2015; Johannesson,
Gudlaugur/O-8741-2015; Loparco, Francesco/O-8847-2015; Gargano,
Fabio/O-8934-2015;
OI Massaro, Francesco/0000-0002-1704-9850; Thorsett,
Stephen/0000-0002-2025-9613; giommi, paolo/0000-0002-2265-5003; De
Angelis, Alessandro/0000-0002-3288-2517; Caraveo,
Patrizia/0000-0003-2478-8018; Sgro', Carmelo/0000-0001-5676-6214;
SPINELLI, Paolo/0000-0001-6688-8864; Hill, Adam/0000-0003-3470-4834;
Bastieri, Denis/0000-0002-6954-8862; Omodei, Nicola/0000-0002-5448-7577;
Chaty, Sylvain/0000-0002-5769-8601; giglietto,
nicola/0000-0002-9021-2888; Reimer, Olaf/0000-0001-6953-1385;
Moskalenko, Igor/0000-0001-6141-458X; Mazziotta, Mario
/0000-0001-9325-4672; Morselli, Aldo/0000-0002-7704-9553; Funk,
Stefan/0000-0002-2012-0080; Johannesson, Gudlaugur/0000-0003-1458-7036;
Loparco, Francesco/0000-0002-1173-5673; Gargano,
Fabio/0000-0002-5055-6395; Pesce-Rollins, Melissa/0000-0003-1790-8018;
orienti, monica/0000-0003-4470-7094; Giroletti,
Marcello/0000-0002-8657-8852; Baldini, Luca/0000-0002-9785-7726
FU NASA; U.S. Department of Energy (United States); CEA/Irfu; IN2P3/CNRS
(France); ASI; INFN (Italy); MEXT; KEK; JAXA (Japan); K. A. Wallenberg
Foundation; Swedish Research Council; National Space Board (Sweden)
FX 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 the U.S.
Department of Energy (United States); CEA/Irfu and IN2P3/CNRS (France);
ASI and INFN (Italy); MEXT, KEK, and JAXA (Japan); and the K. A.
Wallenberg Foundation, the Swedish Research Council, and the National
Space Board (Sweden). Additional support from INAF in Italy and CNES in
France for science analysis during the operations phase is also
gratefully acknowledged. Fermi LAT data are available from the Fermi
Science Support Center (http://fermi.gsfc.nasa.gov/ssc).
NR 29
TC 185
Z9 190
U1 2
U2 76
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
EI 1095-9203
J9 SCIENCE
JI Science
PD FEB 15
PY 2013
VL 339
IS 6121
BP 807
EP 811
DI 10.1126/science.1231160
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 088YS
UT WOS:000314874400045
PM 23413352
ER
PT J
AU Richie, TL
Villasante, EF
AF Richie, Thomas L.
Villasante, Eileen F.
TI Use of Adenovirus Serotype 5 Vaccine Vectors in Seropositive,
Uncircumcised Men: Safety Lessons from the Step Trial
SO JOURNAL OF INFECTIOUS DISEASES
LA English
DT Letter
C1 [Richie, Thomas L.; Villasante, Eileen F.] USN, Malaria Dept, Med Res Ctr, Silver Spring, MD 20910 USA.
RP Richie, TL (reprint author), USN, Malaria Dept, Med Res Ctr, 503 Robert Grant Ave, Silver Spring, MD 20910 USA.
EM thomas.richie@med.navy.mil
OI Richie, Thomas/0000-0002-2946-5456
NR 4
TC 3
Z9 3
U1 0
U2 1
PU OXFORD UNIV PRESS INC
PI CARY
PA JOURNALS DEPT, 2001 EVANS RD, CARY, NC 27513 USA
SN 0022-1899
J9 J INFECT DIS
JI J. Infect. Dis.
PD FEB 15
PY 2013
VL 207
IS 4
BP 689
EP 690
DI 10.1093/infdis/jis737
PG 2
WC Immunology; Infectious Diseases; Microbiology
SC Immunology; Infectious Diseases; Microbiology
GA 078TG
UT WOS:000314121800021
PM 23204174
ER
PT J
AU Golden, JP
Verbarg, J
Howell, PB
Shriver-Lake, LC
Ligler, FS
AF Golden, J. P.
Verbarg, J.
Howell, P. B., Jr.
Shriver-Lake, L. C.
Ligler, F. S.
TI Automated processing integrated with a microflow cytometer for pathogen
detection in clinical matrices
SO BIOSENSORS & BIOELECTRONICS
LA English
DT Article; Proceedings Paper
CT 22nd Anniversary World Congress on Biosensors / Summer School on Printed
Biosensors and Electronics
CY MAY 15-18, 2012
CL Cancun, MEXICO
SP Elsevier, Linkoping Univ, Erkon
DE Integrated sample processing; Microfluidics; Flow cytometry; Magnetic
microspheres; Multiplexed analysis
ID MAGNETIC BEADS; HYBRIDIZATION; IMMUNOASSAY; SYSTEMS; DEVICE; TOXINS;
POINT; TRAP; DNA
AB A spinning magnetic trap (MagTrap) for automated sample processing was integrated with a microflow cytometer capable of simultaneously detecting multiple targets to provide an automated sample-to-answer diagnosis in 40 min. After target capture on fluorescently coded magnetic microspheres, the magnetic trap automatically concentrated the fluorescently coded microspheres, separated the captured target from the sample matrix, and exposed the bound target sequentially to biotinylated tracer molecules and streptavidin-labeled phycoerythrin. The concentrated microspheres were then hydrodynamically focused in a microflow cytometer capable of 4-color analysis (two wavelengths for microsphere identification, one for light scatter to discriminate single microspheres and one for phycoerythrin bound to the target). A three-fold decrease in sample preparation time and an improved detection limit, independent of target preconcentration, was demonstrated for detection of Escherichia coli 0157:H7 using the MagTrap as compared to manual processing. Simultaneous analysis of positive and negative controls, along with the assay reagents specific for the target, was used to obtain dose-response curves, demonstrating the potential for quantification of pathogen load in buffer and serum. Published by Elsevier B.V.
C1 [Golden, J. P.; Verbarg, J.; Howell, P. B., Jr.; Shriver-Lake, L. C.; Ligler, F. S.] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
RP Ligler, FS (reprint author), USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
EM fligler@cbmse.nrl.navy.mil
FU NIAID NIH HHS [U01 AI075489]; PHS HHS [U01 A1075489]
NR 26
TC 14
Z9 14
U1 6
U2 78
PU ELSEVIER ADVANCED TECHNOLOGY
PI OXFORD
PA OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON,
OXFORD OX5 1GB, OXON, ENGLAND
SN 0956-5663
J9 BIOSENS BIOELECTRON
JI Biosens. Bioelectron.
PD FEB 15
PY 2013
VL 40
IS 1
SI SI
BP 10
EP 16
DI 10.1016/j.bios.2012.08.015
PG 7
WC Biophysics; Biotechnology & Applied Microbiology; Chemistry, Analytical;
Electrochemistry; Nanoscience & Nanotechnology
SC Biophysics; Biotechnology & Applied Microbiology; Chemistry;
Electrochemistry; Science & Technology - Other Topics
GA 061CX
UT WOS:000312825800003
PM 22960010
ER
PT J
AU Fitzgerald, LA
Petersen, ER
Leary, DH
Nadeau, LJ
Soto, CM
Ray, RI
Little, BJ
Ringeisen, BR
Johnson, GR
Vora, GJ
Biffinger, JC
AF Fitzgerald, Lisa A.
Petersen, Emily R.
Leary, Dagmar H.
Nadeau, Lloyd J.
Soto, Carissa M.
Ray, Richard I.
Little, Brenda J.
Ringeisen, Bradley R.
Johnson, Glenn R.
Vora, Gary J.
Biffinger, Justin C.
TI Shewanella frigidimarina microbial fuel cells and the influence of
divalent cations on current output
SO BIOSENSORS & BIOELECTRONICS
LA English
DT Article; Proceedings Paper
CT 22nd Anniversary World Congress on Biosensors / Summer School on Printed
Biosensors and Electronics
CY MAY 15-18, 2012
CL Cancun, MEXICO
SP Elsevier, Linkoping Univ, Erkon
DE Shewanella frigidimarina; Shewanella oneidensis MR-1; Microbial fuel
cell; Extracellular electron transfer
ID EXTRACELLULAR ELECTRON-TRANSFER; OUTER-MEMBRANE CYTOCHROMES; ONEIDENSIS
MR-1; SOLUBLE CYTOCHROMES; STATISTICAL-MODEL; REDUCTION; IDENTIFICATION;
ELECTRICITY; GEOBACTER; MTRC
AB The genes involved in the proposed pathway for Shewanella extracellular electron transfer (EET) are highly conserved. While extensive studies involving EET from a fresh water Shewanella microbe (S. oneidensis MR-1) to soluble and insoluble electron acceptors have been published, only a few reports have examined EET from marine strains of Shewanella. Thus, Shewanella frigidimarina (an isolate from Antarctic Sea ice) was used within miniature microbial fuel cells (mini-MFC) to evaluate potential power output. During the course of this study several distinct differences were observed between S. oneidensis MR-1 and S. frigidimarina under comparable conditions. The maximum power density with S. frigidimarina was observed when the anolyte was half-strength marine broth (1/2 MB) (0.28 mu W/cm(2)) compared to Luria-Bertani (LB) (0.07 mu W/cm(2)) or a defined growth minimal medium (MM) (0.02 mu W/cm(2)). The systematic modification of S. frigidimarina cultured in 1/2 MB and LB with divalent cations shows that a maximum current output can be generated independent of internal ionic ohmic losses and the presence of external mediators. Published by Elsevier B.V.
C1 [Fitzgerald, Lisa A.; Ringeisen, Bradley R.; Biffinger, Justin C.] USN, Div Chem, Res Lab, Washington, DC 20375 USA.
[Petersen, Emily R.] Nova Res Inc, Alexandria, VA 22308 USA.
[Leary, Dagmar H.] NRL, Natl Res Council, Washington, DC 20375 USA.
[Nadeau, Lloyd J.; Johnson, Glenn R.] USAF, Res Lab, Tyndall Afb, FL 32403 USA.
[Soto, Carissa M.; Vora, Gary J.] USN, Ctr Bio Mol Sci & Engn, Res Lab, Washington, DC 20375 USA.
[Ray, Richard I.; Little, Brenda J.] USN, Res Lab, Div Oceanog, John C Stennis Space Ctr, MS 39529 USA.
RP Biffinger, JC (reprint author), USN, Div Chem, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM justin.biffinger@nrl.navy.mil
OI Vora, Gary/0000-0002-0657-8597
NR 37
TC 8
Z9 10
U1 1
U2 62
PU ELSEVIER ADVANCED TECHNOLOGY
PI OXFORD
PA OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON,
OXFORD OX5 1GB, OXON, ENGLAND
SN 0956-5663
EI 1873-4235
J9 BIOSENS BIOELECTRON
JI Biosens. Bioelectron.
PD FEB 15
PY 2013
VL 40
IS 1
SI SI
BP 102
EP 109
DI 10.1016/j.bios.2012.06.039
PG 8
WC Biophysics; Biotechnology & Applied Microbiology; Chemistry, Analytical;
Electrochemistry; Nanoscience & Nanotechnology
SC Biophysics; Biotechnology & Applied Microbiology; Chemistry;
Electrochemistry; Science & Technology - Other Topics
GA 061CX
UT WOS:000312825800017
PM 22796023
ER
PT J
AU Chuang, I
Sedegah, M
Cicatelli, S
Spring, M
Polhemus, M
Tamminga, C
Patterson, N
Guerrero, M
Bennett, JW
McGrath, S
Ganeshan, H
Belmonte, M
Farooq, F
Abot, E
Banania, JG
Huang, J
Newcomer, R
Rein, L
Litilit, D
Richie, NO
Wood, C
Murphy, J
Sauerwein, R
Hermsen, CC
McCoy, AJ
Kamau, E
Cummings, J
Komisar, J
Sutamihardja, A
Shi, M
Epstein, JE
Maiolatesi, S
Tosh, D
Limbach, K
Angov, E
Bergmann-Leitner, E
Bruder, JT
Doolan, DL
King, CR
Carucci, D
Dutta, S
Soisson, L
Diggs, C
Hollingdale, MR
Ockenhouse, CF
Richie, TL
AF Chuang, Ilin
Sedegah, Martha
Cicatelli, Susan
Spring, Michele
Polhemus, Mark
Tamminga, Cindy
Patterson, Noelle
Guerrero, Melanie
Bennett, Jason W.
McGrath, Shannon
Ganeshan, Harini
Belmonte, Maria
Farooq, Fouzia
Abot, Esteban
Banania, Jo Glenna
Huang, Jun
Newcomer, Rhonda
Rein, Lisa
Litilit, Dianne
Richie, Nancy O.
Wood, Chloe
Murphy, Jittawadee
Sauerwein, Robert
Hermsen, Cornelus C.
McCoy, Andrea J.
Kamau, Edwin
Cummings, James
Komisar, Jack
Sutamihardja, Awalludin
Shi, Meng
Epstein, Judith E.
Maiolatesi, Santina
Tosh, Donna
Limbach, Keith
Angov, Evelina
Bergmann-Leitner, Elke
Bruder, Joseph T.
Doolan, Denise L.
King, C. Richter
Carucci, Daniel
Dutta, Sheetij
Soisson, Lorraine
Diggs, Carter
Hollingdale, Michael R.
Ockenhouse, Christian F.
Richie, Thomas L.
TI DNA Prime/Adenovirus Boost Malaria Vaccine Encoding P-falciparum CSP and
AMA1 Induces Sterile Protection Associated with Cell-Mediated Immunity
SO PLOS ONE
LA English
DT Article
ID APICAL MEMBRANE ANTIGEN-1; CYTOTOXIC T-LYMPHOCYTES; PHASE 2A TRIAL;
NAIVE ADULTS; CIRCUMSPOROZOITE PROTEIN; NEUTRALIZING ANTIBODIES;
SPOROZOITE INOCULATION; VIRUS ANKARA; DOUBLE-BLIND; IMMUNIZATION
AB Background: Gene-based vaccination using prime/boost regimens protects animals and humans against malaria, inducing cell-mediated responses that in animal models target liver stage malaria parasites. We tested a DNA prime/adenovirus boost malaria vaccine in a Phase 1 clinical trial with controlled human malaria infection.
Methodology/Principal Findings: The vaccine regimen was three monthly doses of two DNA plasmids (DNA) followed four months later by a single boost with two non-replicating human serotype 5 adenovirus vectors (Ad). The constructs encoded genes expressing P. falciparum circumsporozoite protein (CSP) and apical membrane antigen-1 (AMA1). The regimen was safe and well-tolerated, with mostly mild adverse events that occurred at the site of injection. Only one AE (diarrhea), possibly related to immunization, was severe (Grade 3), preventing daily activities. Four weeks after the Ad boost, 15 study subjects were challenged with P. falciparum sporozoites by mosquito bite, and four (27%) were sterilely protected. Antibody responses by ELISA rose after Ad boost but were low (CSP geometric mean titer 210, range 44-817; AMA1 geometric mean micrograms/milliliter 11.9, range 1.5-102) and were not associated with protection. Ex vivo IFN-gamma ELISpot responses after Ad boost were modest (CSP geometric mean spot forming cells/million peripheral blood mononuclear cells 86, range 13-408; AMA1 348, range 88-1270) and were highest in three protected subjects. ELISpot responses to AMA1 were significantly associated with protection (p = 0.019). Flow cytometry identified predominant IFN-gamma mono-secreting CD8+ T cell responses in three protected subjects. No subjects with high pre-existing anti-Ad5 neutralizing antibodies were protected but the association was not statistically significant.
Significance: The DNA/Ad regimen provided the highest sterile immunity achieved against malaria following immunization with a gene-based subunit vaccine (27%). Protection was associated with cell-mediated immunity to AMA1, with CSP probably contributing. Substituting a low seroprevalence vector for Ad5 and supplementing CSP/AMA1 with additional antigens may improve protection.
C1 [Chuang, Ilin; Sedegah, Martha; Tamminga, Cindy; Patterson, Noelle; McGrath, Shannon; Ganeshan, Harini; Belmonte, Maria; Farooq, Fouzia; Abot, Esteban; Banania, Jo Glenna; Huang, Jun; Litilit, Dianne; McCoy, Andrea J.; Sutamihardja, Awalludin; Epstein, Judith E.; Maiolatesi, Santina; Limbach, Keith; Doolan, Denise L.; Carucci, Daniel; Hollingdale, Michael R.; Richie, Thomas L.] USN, US Mil Malaria Vaccine Program, Med Res Ctr, Silver Spring, MD USA.
[Cicatelli, Susan; Spring, Michele; Polhemus, Mark; Guerrero, Melanie; Bennett, Jason W.; Newcomer, Rhonda; Rein, Lisa; Richie, Nancy O.; Wood, Chloe; Murphy, Jittawadee; Kamau, Edwin; Cummings, James; Komisar, Jack; Shi, Meng; Tosh, Donna; Angov, Evelina; Bergmann-Leitner, Elke; Dutta, Sheetij; Ockenhouse, Christian F.] Walter Reed Army Inst Res, US Mil Malaria Vaccine Program, Silver Spring, MD USA.
[Sauerwein, Robert; Hermsen, Cornelus C.] Radboud Univ Nijmegen, Med Ctr, NL-6525 ED Nijmegen, Netherlands.
[Bruder, Joseph T.; King, C. Richter] GenVec Inc, Gaithersburg, MD USA.
[Soisson, Lorraine; Diggs, Carter] USAID, Washington, DC USA.
RP Richie, TL (reprint author), USN, US Mil Malaria Vaccine Program, Med Res Ctr, Silver Spring, MD USA.
EM thomas.richie@med.navy.mil
RI Sauerwein, Robert/C-8519-2013; Bennett, Jason/B-3547-2011;
Bergmann-Leitner, Elke/B-3548-2011; Doolan, Denise/F-1969-2015; Hermsen,
C.C./L-4368-2015;
OI Bergmann-Leitner, Elke/0000-0002-8571-8956; Richie,
Thomas/0000-0002-2946-5456
FU USAID "Development of Adenovirus-Vectored Malaria Vaccines"
[GHA-P-00-03-00006-01, 936-3118]; Congressionally Directed Medical
Research Program "Development of Recombinant Adenoviral-based Vaccines
against Malaria" [W81XWH-05-2-0041]; Military Infectious Research
Program "Phase 1/2a clinical trials assessing the safety, tolerability,
immunogenicity protective efficacy of Ad5-CA, a two-antigen,
adenovirus-vectored Plasmodium falciparum malaria vaccine, in healthy,
malaria-nave adults" [62787A 870 F 1432]
FX This work was supported by USAID "Development of Adenovirus-Vectored
Malaria Vaccines" Grant #: GHA-P-00-03-00006-01, Project Number
936-3118; and the Congressionally Directed Medical Research Program
"Development of Recombinant Adenoviral-based Vaccines against Malaria"
Grant #: W81XWH-05-2-0041.. Website: https://cdmrp.org. Military
Infectious Research Program "Phase 1/2a clinical trials assessing the
safety, tolerability, immunogenicity & protective efficacy of Ad5-CA, a
two-antigen, adenovirus-vectored Plasmodium falciparum malaria vaccine,
in healthy, malaria-nave adults", work unit number 62787A 870 F 1432.
The funders had no role in study design, data collection and analysis,
decision to publish, or preparation of the manuscript.
NR 52
TC 57
Z9 60
U1 0
U2 18
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 FEB 14
PY 2013
VL 8
IS 2
AR e55571
DI 10.1371/journal.pone.0055571
PG 15
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 099EJ
UT WOS:000315602700019
PM 23457473
ER
PT J
AU Junkermeier, CE
Solenov, D
Reinecke, TL
AF Junkermeier, Chad E.
Solenov, Dmitry
Reinecke, Thomas L.
TI Adsorption of NH2 on Graphene in the Presence of Defects and Adsorbates
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
AB Amine, NH2, is of interest as a linker between organic molecules and graphene in novel biotechnologies. We used ab initio electronic structure calculations to study NH2 adsorption on graphene in the presence of surface defects and other adsorbates, including N, B, F, H, and OH. Amine is found to form a semi-ionic bond of 0.778 eV on pristine graphene. Its binding is found to be modified near other defects, and the adsorption energy is dependent on the neighbor order.
C1 [Junkermeier, Chad E.; Solenov, Dmitry; Reinecke, Thomas L.] USN, Res Lab, Washington, DC 20375 USA.
RP Reinecke, TL (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM reinecke@nrl.navy.mil
RI Solenov, Dmitry/H-6250-2012
FU U.S. Office of Naval Research
FX This work was partially supported by the U.S. Office of Naval Research.
The DoD High Performance Computing Modernization Program provided
computer resources. C.E.J. and D.S. are National Research Council
Postdoctoral Associates.
NR 32
TC 11
Z9 11
U1 2
U2 44
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 FEB 14
PY 2013
VL 117
IS 6
BP 2793
EP 2798
DI 10.1021/jp309419x
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 093HH
UT WOS:000315181800048
ER
PT J
AU Adamczyk, L
Agakishiev, G
Aggarwal, MM
Ahammed, Z
Alakhverdyants, AV
Alekseev, I
Alford, J
Anson, CD
Arkhipkin, D
Aschenauer, E
Averichev, GS
Balewski, J
Banerjee, A
Barnovska, Z
Beavis, DR
Bellwied, R
Betancourt, MJ
Betts, RR
Bhasin, A
Bhati, AK
Bichsel, H
Bielcik, J
Bielcikova, J
Bland, LC
Bordyuzhin, IG
Borowski, W
Bouchet, J
Brandin, AV
Brovko, SG
Bruna, E
Bultmann, S
Bunzarov, I
Burton, TP
Butterworth, J
Cai, XZ
Caines, H
Sanchez, MCD
Cebra, D
Cendejas, R
Cervantes, MC
Chaloupka, P
Chang, Z
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, JY
Chen, L
Cheng, J
Cherney, M
Chikanian, A
Christie, W
Chung, P
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
de Souza, RD
Dhamija, S
Didenko, L
Ding, F
Dion, A
Djawotho, P
Dong, X
Drachenberg, JL
Draper, JE
Du, CM
Dunkelberger, LE
Dunlop, JC
Efimov, LG
Elnimr, M
Engelage, J
Eppley, G
Eun, L
Evdokimov, O
Fatemi, R
Fazio, S
Fedorisin, J
Fersch, RG
Filip, P
Finch, E
Fisyak, Y
Gagliardi, CA
Gangadharan, DR
Geurts, F
Gibson, A
Gliske, S
Gorbunov, YN
Grebenyuk, OG
Grosnick, D
Gupta, S
Guryn, W
Haag, B
Hajkova, O
Hamed, A
Han, LX
Harris, JW
Hays-Wehle, JP
Heppelmann, S
Hirsch, A
Hoffmann, GW
Hofman, DJ
Horvat, S
Huang, B
Huang, HZ
Huck, P
Humanic, TJ
Huo, L
Igo, G
Jacobs, WW
Jena, C
Judd, EG
Kabana, S
Kang, K
Kapitan, J
Kauder, K
Ke, HW
Keane, D
Kechechyan, A
Kesich, A
Kikola, DP
Kiryluk, J
Kisel, I
Kisiel, A
Kizka, V
Klein, SR
Koetke, DD
Kollegger, T
Konzer, J
Koralt, I
Koroleva, L
Korsch, W
Kotchenda, L
Kravtsov, P
Krueger, K
Kulakov, I
Kumar, L
Lamont, MAC
Landgraf, JM
LaPointe, S
Lauret, J
Lebedev, A
Lednicky, R
Lee, JH
Leight, W
LeVine, MJ
Li, C
Li, L
Li, W
Li, X
Li, X
Li, Y
Li, ZM
Lima, LM
Lisa, MA
Liu, F
Ljubicic, T
Llope, WJ
Longacre, RS
Lu, Y
Luo, X
Luszczak, A
Ma, GL
Ma, YG
Don, DMMDM
Mahapatra, DP
Majka, R
Mall, OI
Margetis, S
Markert, C
Masui, H
Matis, HS
McDonald, D
McShane, TS
Mioduszewski, S
Mitrovski, MK
Mohammed, Y
Mohanty, B
Mondal, MM
Morozov, B
Munhoz, MG
Mustafa, MK
Naglis, M
Nandi, BK
Nasim, M
Nayak, TK
Nelson, JM
Nogach, LV
Novak, J
Odyniec, G
Ogawa, A
Oh, K
Ohlson, A
Okorokov, V
Oldag, EW
Oliveira, RAN
Olson, D
Ostrowski, P
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
Powell, CB
Pruneau, C
Pruthi, NK
Przybycien, M
Pujahari, PR
Putschke, J
Qiu, H
Raniwala, R
Raniwala, S
Ray, RL
Redwine, R
Reed, R
Riley, CK
Ritter, HG
Roberts, JB
Rogachevskiy, OV
Romero, JL
Ross, JF
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, B
Schmitz, N
Schuster, TR
Seele, J
Seger, J
Seyboth, P
Shah, N
Shahaliev, E
Shao, M
Sharma, B
Sharma, M
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
Steadman, SG
Stevens, JR
Stock, R
Strikhanov, M
Stringfellow, B
Suaide, AAP
Suarez, MC
Sumbera, M
Sun, XM
Sun, Y
Sun, Z
Surrow, B
Svirida, DN
Symons, TJM
de Toledo, AS
Takahashi, J
Tang, AH
Tang, Z
Tarini, LH
Tarnowsky, T
Thein, D
Thomas, JH
Tian, J
Timmins, AR
Tlusty, D
Tokarev, M
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
Videbaek, F
Viyogi, YP
Vokal, S
Voloshin, SA
Vossen, A
Wada, M
Wang, F
Wang, G
Wang, H
Wang, JS
Wang, Q
Wang, XL
Wang, Y
Webb, G
Webb, JC
Westfall, GD
Whitten, C
Wieman, H
Wissink, SW
Witt, R
Witzke, W
Wu, YF
Xiao, Z
Xie, W
Xin, K
Xu, H
Xu, N
Xu, QH
Xu, W
Xu, Y
Xu, Z
Xue, L
Yang, Y
Yang, Y
Yepes, P
Yi, Y
Yip, K
Yoo, IK
Zawisza, M
Zbroszczyk, H
Zhang, JB
Zhang, S
Zhang, XP
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Zhao, J
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Agakishiev, G.
Aggarwal, M. M.
Ahammed, Z.
Alakhverdyants, A. V.
Alekseev, I.
Alford, J.
Anson, C. D.
Arkhipkin, D.
Aschenauer, E.
Averichev, G. S.
Balewski, J.
Banerjee, A.
Barnovska, Z.
Beavis, D. R.
Bellwied, R.
Betancourt, M. J.
Betts, R. R.
Bhasin, A.
Bhati, A. K.
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Bielcikova, J.
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Bordyuzhin, I. G.
Borowski, W.
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Bunzarov, I.
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Cai, X. Z.
Caines, H.
de la Barca Sanchez, M. Calderon
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chaloupka, P.
Chang, Z.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, J. Y.
Chen, L.
Cheng, J.
Cherney, M.
Chikanian, A.
Christie, W.
Chung, P.
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.
Derradi de Souza, R.
Dhamija, S.
Didenko, L.
Ding, F.
Dion, A.
Djawotho, P.
Dong, X.
Drachenberg, J. L.
Draper, J. E.
Du, C. M.
Dunkelberger, L. E.
Dunlop, J. C.
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Engelage, J.
Eppley, G.
Eun, L.
Evdokimov, O.
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Fazio, S.
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Finch, E.
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Gangadharan, D. R.
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Gliske, S.
Gorbunov, Y. N.
Grebenyuk, O. G.
Grosnick, D.
Gupta, S.
Guryn, W.
Haag, B.
Hajkova, O.
Hamed, A.
Han, L. -X.
Harris, J. W.
Hays-Wehle, J. P.
Heppelmann, S.
Hirsch, A.
Hoffmann, G. W.
Hofman, D. J.
Horvat, S.
Huang, B.
Huang, H. Z.
Huck, P.
Humanic, T. J.
Huo, L.
Igo, G.
Jacobs, W. W.
Jena, C.
Judd, E. G.
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Kapitan, J.
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Ke, H. W.
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Kesich, A.
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Kiryluk, J.
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Sangaline, E.
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Stanislaus, T. D. S.
Steadman, S. G.
Stevens, J. R.
Stock, R.
Strikhanov, M.
Stringfellow, B.
Suaide, A. A. P.
Suarez, M. C.
Sumbera, M.
Sun, X. M.
Sun, Y.
Sun, Z.
Surrow, B.
Svirida, D. N.
Symons, T. J. M.
Szanto de Toledo, A.
Takahashi, J.
Tang, A. H.
Tang, Z.
Tarini, L. H.
Tarnowsky, T.
Thein, D.
Thomas, J. H.
Tian, J.
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.
Videbaek, F.
Viyogi, Y. P.
Vokal, S.
Voloshin, S. A.
Vossen, A.
Wada, M.
Wang, F.
Wang, G.
Wang, H.
Wang, J. S.
Wang, Q.
Wang, X. L.
Wang, Y.
Webb, G.
Webb, J. C.
Westfall, G. D.
Whitten, C., Jr.
Wieman, H.
Wissink, S. W.
Witt, R.
Witzke, W.
Wu, Y. F.
Xiao, Z.
Xie, W.
Xin, K.
Xu, H.
Xu, N.
Xu, Q. H.
Xu, W.
Xu, Y.
Xu, Z.
Xue, L.
Yang, Y.
Yang, Y.
Yepes, P.
Yi, Y.
Yip, K.
Yoo, I. -K.
Zawisza, M.
Zbroszczyk, H.
Zhang, J. B.
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 Single spin asymmetry AN in polarized proton-proton elastic scattering
at root s=200 GeV
SO PHYSICS LETTERS B
LA English
DT Article
DE Polarization; Elastic scattering
ID 1ST MEASUREMENT; IMPACT-PICTURE; PP; INTERFERENCE; POMERON; REGION;
ENERGY; BEAM; A(N)
AB We report a high precision measurement of the transverse single spin asymmetry A(N) at the center of mass energy root s = 200 GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The A(N) was measured in the four-momentum transfer squared t range 0.003 <= vertical bar t vertical bar <= 0.035 (GeV/c)(2), the region of a significant interference between the electromagnetic and hadronic scattering amplitudes. The measured values of A(N) and its t-dependence are consistent with a vanishing hadronic spin-flip amplitude, thus providing strong constraints on the ratio of the single spin-flip to the non-flip amplitudes. Since the hadronic amplitude is dominated by the Pomeron amplitude at this root s, we conclude that this measurement addresses the question about the presence of a hadronic spin flip due to the Pomeron exchange in polarized proton-proton elastic scattering. (c) 2013 Elsevier B.V. All rights reserved.
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[Adamczyk, L.; Przybycien, M.] AGH Univ Sci & Technol, Krakow, Poland.
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[Kisiel, A.; Ostrowski, P.; Pawlak, T.; Peryt, W.; Pluta, J.; Sandacz, A.; Trzeciak, B. A.; Zawisza, M.; Zbroszczyk, H.] Warsaw Univ Technol, Warsaw, Poland.
[Bichsel, H.; Cramer, J. G.] Univ Washington, Seattle, WA 98195 USA.
[Elnimr, M.; LaPointe, S.; Pruneau, C.; Putschke, J.; Sharma, M.; Tarini, L. H.; Voloshin, S. A.] Wayne State Univ, Detroit, MI 48201 USA.
[Bruna, E.; 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 Yip, K (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM kinyip@bnl.gov
RI Takahashi, Jun/B-2946-2012; Yip, Kin/D-6860-2013; Fazio, Salvatore
/G-5156-2010; Voloshin, Sergei/I-4122-2013; Pandit, Yadav/I-2170-2013;
Lednicky, Richard/K-4164-2013; Yang, Yanyun/B-9485-2014; Rusnak,
Jan/G-8462-2014; Bielcikova, Jana/G-9342-2014; Alekseev,
Igor/J-8070-2014; Sumbera, Michal/O-7497-2014; Strikhanov,
Mikhail/P-7393-2014; Xu, Wenqin/H-7553-2014; XIAO, Zhigang/C-3788-2015;
Aparecido Negrao de Oliveira, Renato/G-9133-2015; Bruna,
Elena/C-4939-2014; Chaloupka, Petr/E-5965-2012; Huang,
Bingchu/H-6343-2015; Derradi de Souza, Rafael/M-4791-2013; Suaide,
Alexandre/L-6239-2016; Xin, Kefeng/O-9195-2016; Svirida,
Dmitry/R-4909-2016; Inst. of Physics, Gleb Wataghin/A-9780-2017;
Okorokov, Vitaly/C-4800-2017; Ma, Yu-Gang/M-8122-2013;
OI Takahashi, Jun/0000-0002-4091-1779; Yip, Kin/0000-0002-8576-4311;
Pandit, Yadav/0000-0003-2809-7943; Yang, Yanyun/0000-0002-5982-1706;
Alekseev, Igor/0000-0003-3358-9635; Sumbera, Michal/0000-0002-0639-7323;
Strikhanov, Mikhail/0000-0003-2586-0405; Xu, Wenqin/0000-0002-5976-4991;
Bruna, Elena/0000-0001-5427-1461; Huang, Bingchu/0000-0002-3253-3210;
Derradi de Souza, Rafael/0000-0002-2084-7001; Suaide,
Alexandre/0000-0003-2847-6556; Xin, Kefeng/0000-0003-4853-9219;
Okorokov, Vitaly/0000-0002-7162-5345; Ma, Yu-Gang/0000-0002-0233-9900;
Mohanty, Bedangadas/0000-0001-9610-2914; Bhasin,
Anju/0000-0002-3687-8179
FU Office of NP within the US DOE Office of Science; Office HEP within the
US DOE Office of Science; US NSF; Sloan Foundation; CNRS/IN2P3; FAPESP
CNPq of Brazil; Ministry of Ed. and Sci. of the Russian Federation;
NNSFC; CAS; MoST; MoE of China; GA of the Czech Republic; MSMT of the
Czech Republic; FOM of the Netherlands; NWO of the Netherlands; DAE of
India; DST of India; CSIR of India; Polish Ministry of Sci. and Higher
Ed.; 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 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, the Sloan Foundation,
CNRS/IN2P3, FAPESP CNPq of Brazil, Ministry of Ed. and Sci. of the
Russian Federation, NNSFC, CAS, MoST, and MoE of China, GA and MSMT of
the Czech Republic, FOM and NWO of the Netherlands, DAE, DST, and CSIR
of India, Polish Ministry of Sci. and Higher Ed., National Research
Foundation (NRF-2012004024), Ministry of Sci., Ed. and Sports of the
Rep. of Croatia, and RosAtom of Russia.
NR 29
TC 12
Z9 12
U1 1
U2 39
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 FEB 12
PY 2013
VL 719
IS 1-3
BP 62
EP 69
DI 10.1016/j.physletb.2013.01.014
PG 8
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 091QT
UT WOS:000315065600008
ER
PT J
AU Adam, O
MacDonald, C
Rivet, D
Ritter, J
May, T
Barefield, M
Duckworth, J
La Barge, D
Asher, D
Drinkwine, B
Brody, D
AF Adam, Octavian
MacDonald, Christine
Rivet, Dennis
Ritter, John
May, Todd
Barefield, Maria
Duckworth, Josh
La Barge, Donald
Asher, Dean
Drinkwine, Benjamin
Brody, David
TI Diffusion Tensor Imaging in Acute Blast-Related Mild Traumatic Brain
Injury in Injured Service Members in Afghanistan
SO NEUROLOGY
LA English
DT Meeting Abstract
CT 65th Annual Meeting of the American-Academy-of-Neurology (AAN)
CY MAR 16-23, 2013
CL San Diego, CA
SP Amer Acad Neurol
C1 [Adam, Octavian; Rivet, Dennis; La Barge, Donald] Naval Med Ctr Portsmouth, Portsmouth, VA USA.
[MacDonald, Christine; Brody, David] Washington Univ, Sch Med, St Louis, MO USA.
[Ritter, John] San Antonio Mil Med Ctr, Ft Sam Houston, TX USA.
[May, Todd] Naval Hosp Camp Pendleton Camp, Pendleton, CA USA.
[Barefield, Maria] Naval Hosp Jacksonville, Jacksonville, FL USA.
[Duckworth, Josh; Asher, Dean; Drinkwine, Benjamin] Naval Med Ctr San Diego, San Diego, CA USA.
NR 0
TC 0
Z9 0
U1 0
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0028-3878
EI 1526-632X
J9 NEUROLOGY
JI Neurology
PD FEB 12
PY 2013
VL 80
SU S
MA S14002
PG 1
WC Clinical Neurology
SC Neurosciences & Neurology
GA AB8VR
UT WOS:000332068606033
ER
PT J
AU Schermer, RT
Villarruel, CA
Bucholtz, F
McLaughlin, CV
AF Schermer, Ross T.
Villarruel, Carl A.
Bucholtz, Frank
McLaughlin, Colin V.
TI Reconfigurable liquid metal fiber-optic mirror for continuous,
widely-tunable true-time-delay
SO OPTICS EXPRESS
LA English
DT Article
ID MICROWAVE SIGNALS; MERCURY
AB This paper reports the demonstration of a widely-translatable fiber-optic mirror based on the motion of liquid metal through the hollow core of a photonic bandgap fiber. By moving a liquid metal mirror within the hollow core of an optical fiber, large, continuous changes in optical path length are achieved in a comparatively small package. A fiber-optic device is demonstrated which provided a continuously-variable optical path length of over 3.6 meters, without the use of free-space optics or resonant optical techniques (i.e. slow light). This change in path length corresponds to a continuously-variable true-time delay of over 12 ns, or 120 periods at a modulation frequency of 10 GHz. Wavelength dependence was shown to be negligible across the C and L bands.
C1 [Schermer, Ross T.; Villarruel, Carl A.; Bucholtz, Frank; McLaughlin, Colin V.] USN, Res Lab, Div Opt Sci, Washington, DC 20375 USA.
RP Schermer, RT (reprint author), USN, Res Lab, Div Opt Sci, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM ross.schermer@nrl.navy.mil
NR 15
TC 2
Z9 2
U1 0
U2 12
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD FEB 11
PY 2013
VL 21
IS 3
BP 2741
EP 2747
DI 10.1364/OE.21.002741
PG 7
WC Optics
SC Optics
GA 104KJ
UT WOS:000315991400021
PM 23481731
ER
PT J
AU Daniele, MA
North, SH
Naciri, J
Howell, PB
Foulger, SH
Ligler, FS
Adams, AA
AF Daniele, Michael A.
North, Stella H.
Naciri, Jawad
Howell, Peter B.
Foulger, Stephen H.
Ligler, Frances S.
Adams, Andre A.
TI Rapid and Continuous Hydrodynamically Controlled Fabrication of
Biohybrid Microfibers
SO ADVANCED FUNCTIONAL MATERIALS
LA English
DT Article
DE cell encapsulation; microfiber extrusion; hydrogel; microfabrication;
hydrodynamic focusing
ID POLY(ETHYLENE GLYCOL) HYDROGELS; IMMOBILIZED BACTERIA; MICROBIAL-CELLS;
ENCAPSULATION; BEHAVIOR; FIBERS; CHONDROCYTES; SENSORS; SYSTEMS; SPORES
AB Cell encapsulation is critical for many biotechnology applications including environmental remediation, bioreactors, and regenerative medicine. Here, the development of biohybrid microfibers comprised of encapsulated bacteria in hydrogel matrices produced on-chip using microfluidics is reported. The fiber production process utilizes hydrodynamic shaping of a cell-laden core fluid by a miscible sheath fluid. Production of the fibers containing viable bacteria was continuous in contrast to the more typical methods in which cells infiltrated or were attached to prepared fibers. The biohybrid fibers were composed of poly (ethylene glycol dimethacrylate) matrices and individually both E. coli and B. cereus were explored as model cellular payloads. Post processing growth curves (24 h) of bacteria within fibers were in excellent agreement with that of controls suggesting minimal impact. Finally, the biohybrid fibers showed even distribution of encapsulated cells and >90% cell viability.
C1 [Daniele, Michael A.; Foulger, Stephen H.] Clemson Univ, Sch Mat Sci & Engn, Ctr Opt Mat Sci & Technol, Clemson, SC 29634 USA.
[North, Stella H.; Naciri, Jawad; Howell, Peter B.; Ligler, Frances S.; Adams, Andre A.] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
RP Daniele, MA (reprint author), Clemson Univ, Sch Mat Sci & Engn, Ctr Opt Mat Sci & Technol, Clemson, SC 29634 USA.
EM andre.admas@nrl.navy.mil
OI Adams, Andre/0000-0002-2979-249X
FU Naval Research Laboratory (NRL); Office of Naval Research (ONR)
[MA041-06-4286]
FX The authors thank Igor L. Medintz for providing the E. coli pRSET-B
mCherry used herein. This work was supported by the Naval Research
Laboratory (NRL) and the Office of Naval Research (ONR) 6.1 work unit
MA041-06-4286. The views expressed here represent those of the authors
and do not reflect those of NRL, the Navy, or the Department of Defense.
NR 37
TC 28
Z9 28
U1 5
U2 93
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1616-301X
J9 ADV FUNCT MATER
JI Adv. Funct. Mater.
PD FEB 11
PY 2013
VL 23
IS 6
BP 698
EP 704
DI 10.1002/adfm.201202258
PG 7
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 089QK
UT WOS:000314924900005
ER
PT J
AU Lampen, P
Bingham, NS
Phan, MH
Kim, H
Osofsky, M
Pique, A
Phan, TL
Yu, SC
Srikanth, H
AF Lampen, P.
Bingham, N. S.
Phan, M. H.
Kim, H.
Osofsky, M.
Pique, A.
Phan, T. L.
Yu, S. C.
Srikanth, H.
TI Impact of reduced dimensionality on the magnetic and magnetocaloric
response of La0.7Ca0.3MnO3
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID MAGNETOTRANSPORT PROPERTIES; STRAIN; FILMS
AB Understanding the impact of reduced dimensionality on the magnetic and magnetocaloric responses of a material is vital in incorporating it as an active magnetic refrigerant in cooling devices. By contrasting the magnetic and magnetocaloric behaviors of bulk polycrystalline, sol-gel derived nanocrystalline, and pulsed laser deposited thin film forms of the La0.7Ca0.3MnO3 system, we show that reducing the dimensionality of a ferromagnetic material tends to broaden and shift the paramagnetic to ferromagnetic transition to lower temperatures, while decreasing the saturation magnetization and the magnitude of the magnetic entropy change. Relative to its bulk counterpart, a pronounced broadening of the magnetic entropy change peak in the thin film leads to enhanced refrigerant capacity-an important figure-of-merit for active magnetic refrigeration technology. With reduced dimensionality, universal curves based on re-scaled entropy change curves tend toward collapse, indicating a weakening of the first order nature of the transition in the nanocrystalline samples and a crossover to second order in the thin film. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4792239]
C1 [Lampen, P.; Bingham, N. S.; Phan, M. H.; Srikanth, H.] Univ S Florida, Dept Phys, Tampa, FL 33620 USA.
[Bingham, N. S.; Kim, H.; Osofsky, M.; Pique, A.] USN, Res Lab, Washington, DC 20375 USA.
[Phan, T. L.; Yu, S. C.] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea.
RP Phan, MH (reprint author), Univ S Florida, Dept Phys, Tampa, FL 33620 USA.
EM phanm@usf.edu; scyu@chungbuk.ac.kr; sharihar@usf.edu
RI Phan, Manh-Huong/A-6709-2014; Bingham, Nicholas/B-3768-2016
FU DOE BES Physical Behavior of Materials Program [DE-FG02-07ER46438];
University of South Florida; Florida Cluster for Advanced Smart Sensor
Technologies (FCASST); Office of Naval Research; Converging Research
Center Program; Ministry of Education, Science and Technology
[2012K001431]
FX The work at the University of South Florida was supported by DOE BES
Physical Behavior of Materials Program through Grant No.
DE-FG02-07ER46438. P. L. acknowledges support from the University of
South Florida's Presidential Doctoral Fellowship. M. H. P. acknowledges
support from the Florida Cluster for Advanced Smart Sensor Technologies
(FCASST). H. K., M.O., and A. P. acknowledge support from the Office of
Naval Research. S.C.Y. and T. L. P. acknowledge support from the
Converging Research Center Program funded by the Ministry of Education,
Science and Technology (2012K001431).
NR 26
TC 45
Z9 48
U1 2
U2 54
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD FEB 11
PY 2013
VL 102
IS 6
AR 062414
DI 10.1063/1.4792239
PG 5
WC Physics, Applied
SC Physics
GA 091MH
UT WOS:000315053300055
ER
PT J
AU Efroimsky, M
Makarov, VV
AF Efroimsky, Michael
Makarov, Valeri V.
TI TIDAL FRICTION AND TIDAL LAGGING. APPLICABILITY LIMITATIONS OF A POPULAR
FORMULA FOR THE TIDAL TORQUE
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE celestial mechanics; Moon; planet-star interactions; planets and
satellites: dynamical evolution and stability; planets and satellites:
general
ID SPIN-ORBIT RESONANCES; CLOSE BINARY-SYSTEMS; BODILY TIDES; EVOLUTION;
SATELLITES; EXOPLANETS; DISSIPATION; MODEL; MOON
AB Tidal torques play a key role in rotational dynamics of celestial bodies. They govern these bodies' tidal despinning and also participate in the subtle process of entrapment of these bodies into spin-orbit resonances. This makes tidal torques directly relevant to the studies of habitability of planets and their moons. Our work begins with an explanation of how friction and lagging should be built into the theory of bodily tides. Although much of this material can be found in various publications, a short but self-consistent summary on the topic has been lacking in the hitherto literature, and we are filling the gap. After these preparations, we address a popular concise formula for the tidal torque, which is often used in the literature, for planets or stars. We explain why the derivation of this expression, offered in the paper by Goldreich and in the books by Kaula (Equation (4.5.29)) and Murray & Dermott (Equation (4.159)), implicitly sets the time lag to be frequency independent. Accordingly, the ensuing expression for the torque can be applied only to bodies having a very special (and very hypothetical) rheology which makes the time lag frequency independent, i.e., the same for all Fourier modes in the spectrum of tide. This expression for the torque should not be used for bodies of other rheologies. Specifically, the expression cannot be combined with an extra assertion of the geometric lag being constant, because at finite eccentricities the said assumption is incompatible with the constant-time-lag condition.
C1 [Efroimsky, Michael; Makarov, Valeri V.] USN Observ, Washington, DC 20392 USA.
RP Efroimsky, M (reprint author), USN Observ, Washington, DC 20392 USA.
EM michael.efroimsky@usno.navy.mil; vvm@usno.navy.mil
OI Makarov, Valeri/0000-0003-2336-7887; Efroimsky,
Michael/0000-0003-1249-9622
NR 32
TC 30
Z9 30
U1 0
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD FEB 10
PY 2013
VL 764
IS 1
AR 26
DI 10.1088/0004-637X/764/1/26
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 081PV
UT WOS:000314335200026
ER
PT J
AU Leake, JE
Linton, MG
AF Leake, James E.
Linton, Mark G.
TI EFFECT OF ION-NEUTRAL COLLISIONS IN SIMULATIONS OF EMERGING ACTIVE
REGIONS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE magnetic fields; magnetohydrodynamics (MHD); Sun: coronal mass ejections
(CMEs)
ID CORONAL MASS EJECTIONS; IONIZED SOLAR ATMOSPHERE; MAGNETIC-FLUX;
CONVECTION ZONE; ALFVEN WAVES; EMERGENCE; CHROMOSPHERE; FIELD; PLASMA;
TUBES
AB We present results of 2.5D numerical simulations of the emergence of sub-surface magnetic flux into the solar atmosphere, with emerging flux regions ranging from 10(18) to 10(21) Mx, representing both ephemeral and active regions. We include the presence of neutral hydrogen in the governing equations, improve upon previous models by including the ionization in the equation of state, and use a more realistic convection zone model. We find that ionization and recombination of plasma during the rise of a convection zone flux tube reduces the rise speed of the tube's axis. The presence of neutral hydrogen allows the effective flow of mass across field lines, by the addition of a Pedersen resistivity to the generalized Ohm's law, which dissipates current perpendicular to the magnetic field. This causes an increase of up to 10% in the amount of magnetic in-plane flux supplied to the corona and a reduction of up to 89% in the amount of sub-surface plasma brought up into the corona. However, it also reduces the amount of free magnetic energy supplied to the corona, and thus does not positively affect the likelihood of creating unstable coronal structures.
C1 [Leake, James E.] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA.
[Linton, Mark G.] USN, Res Lab, Washington, DC 20375 USA.
RP Leake, JE (reprint author), George Mason Univ, Coll Sci, 4400 Univ Dr, Fairfax, VA 22030 USA.
EM jleake@gmu.edu
FU NASA; ONR; NRL-Hinode analysis program; DoD HPC program
FX This work has been supported by the NASA Living With a Star, Solar &
Heliospheric Physics programs, the ONR 6.1 Program, and the NRL-Hinode
analysis program. The simulations were performed under a grant of
computer time from the DoD HPC program.
NR 46
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 FEB 10
PY 2013
VL 764
IS 1
AR 54
DI 10.1088/0004-637X/764/1/54
PG 15
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 081PV
UT WOS:000314335200054
ER
PT J
AU Makarov, VV
Efroimsky, M
AF Makarov, Valeri V.
Efroimsky, Michael
TI NO PSEUDOSYNCHRONOUS ROTATION FOR TERRESTRIAL PLANETS AND MOONS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE celestial mechanics; Moon; planet-star interactions; planets and
satellites: dynamical evolution and stability; planets and satellites:
general
ID CHROMOSPHERICALLY ACTIVE STARS; SPIN-ORBIT RESONANCES; TIDAL
DISSIPATION; BODILY TIDES; FRICTION; EVOLUTION; MODEL; SPECTROSCOPY;
PHOTOMETRY; EXOPLANETS
AB We re-examine the popular belief that a telluric planet or a satellite on an eccentric orbit can, outside a spin-orbit resonance, be captured in a quasi-static tidal equilibrium called pseudosynchronous rotation. The existence of such configurations was deduced from oversimplified tidal models assuming either a constant tidal torque or a torque linear in the tidal frequency. A more accurate treatment requires that the torque be decomposed into the Darwin-Kaula series over the tidal modes, and that this decomposition be combined with a realistic choice of rheological properties of the mantle, which we choose to be a combination of the Andrade model at ordinary frequencies and the Maxwell model at low frequencies. This development demonstrates that there exist no stable equilibrium states for solid planets and moons, other than spin-orbit resonances.
C1 [Makarov, Valeri V.; Efroimsky, Michael] USN Observ, Washington, DC 20392 USA.
RP Makarov, VV (reprint author), USN Observ, Washington, DC 20392 USA.
EM vvm@usno.navy.mil; michael.efroimsky@usno.navy.mil
OI Makarov, Valeri/0000-0003-2336-7887; Efroimsky,
Michael/0000-0003-1249-9622
NR 43
TC 28
Z9 28
U1 0
U2 5
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 FEB 10
PY 2013
VL 764
IS 1
AR 27
DI 10.1088/0004-637X/764/1/27
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 081PV
UT WOS:000314335200027
ER
PT J
AU Wang, YM
Sheeley, NR
AF Wang, Y. -M.
Sheeley, N. R., Jr.
TI THE SOLAR WIND AND INTERPLANETARY FIELD DURING VERY LOW AMPLITUDE
SUNSPOT CYCLES
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE solar-terrestrial relations; solar wind; Sun: activity; Sun:
heliosphere; sunspots; Sun: surface magnetism
ID SCALE MAGNETIC-FIELD; GALACTIC COSMIC-RAYS; MAUNDER MINIMUM; MERIDIONAL
CIRCULATION; FLUX TRANSPORT; CORONAL HOLES; MODULATION; EVOLUTION; SUN;
REGION
AB Cosmogenic isotope records indicate that a solar-cycle modulation persists through extended periods of very low sunspot activity. One immediate implication is that the photospheric field during such grand minima did not consist entirely of ephemeral regions, which produce a negligible amount of open magnetic flux, but continued to have a large-scale component originating from active regions. Present-day solar and heliospheric observations show that the solar wind mass flux and proton density at the coronal base scale almost linearly with the footpoint field strength, whereas the wind speed at Earth is uncorrelated with the latter. Thus a factor of similar to 4-7 reduction in the total open flux, as deduced from reconstructions of the interplanetary magnetic field (IMF) during the Maunder Minimum, would lead to a similar decrease in the solar wind densities, while leaving the wind speeds largely unchanged. We also demonstrate that a decrease in the strengths of the largest active regions during grand minima will reduce the amplitude of the Sun's equatorial dipole relative to the axial component, causing the IMF strength to peak near sunspot minimum rather than near sunspot maximum, a result that is consistent with the phase shift observed in the Be-10 record during the Maunder Minimum. Finally, we discuss the origin of the 5 yr periodicity sometimes present in the cosmogenic isotope data during low and medium amplitude cycles.
C1 [Wang, Y. -M.; Sheeley, N. R., Jr.] USN, Div Space Sci, Res Lab, Washington, DC 20375 USA.
RP Wang, YM (reprint author), USN, Div Space Sci, Res Lab, Washington, DC 20375 USA.
EM yi.wang@nrl.navy.mil; neil.sheeley@nrl.navy.mil
FU NASA; Office of Naval Research
FX This work was instigated by discussions at the International Space
Science Institute team workshop on "Long-Term Reconstruction of Solar
and Solar Wind Parameters" (2012 May), and was funded by NASA and the
Office of Naval Research.
NR 67
TC 12
Z9 12
U1 1
U2 11
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 FEB 10
PY 2013
VL 764
IS 1
AR 90
DI 10.1088/0004-637X/764/1/90
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 081PV
UT WOS:000314335200090
ER
PT J
AU Fromm, M
Nedoluha, G
Charvat, Z
AF Fromm, Michael
Nedoluha, Gerald
Charvat, Zdenek
TI Comment on "Large Volcanic Aerosol Load in the Stratosphere Linked to
Asian Monsoon Transport"
SO SCIENCE
LA English
DT Editorial Material
AB Bourassa et al. (Reports, 6 July 2012, p. 78) report on the 13 June 2011 eruption of the Nabro volcano and satellite observations of stratospheric aerosol that they attribute to troposphere to stratosphere ascent via the Asian monsoon. They claim (citing another source) that the 13 June top injection height was well below the tropopause. We will show that the 13 June Nabro eruption plume was clearly stratospheric and contained both volcanic gases and aerosols. Moreover, we will show height-resolved stratospheric sulfur dioxide and volcanic aerosol enhancements 1 to 3 days old, unaffected by the Asian monsoon, precisely connected to the volcano. The observed stratospheric aerosols and gases are fully explained by the 13 June eruption and do not require a monsoon vehicle.
C1 [Fromm, Michael; Nedoluha, Gerald] USN, Res Lab, Washington, DC 20375 USA.
[Charvat, Zdenek] Czech Hydrometeorol Inst, Prague 14306, Czech Republic.
RP Fromm, M (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM mike.fromm@nrl.navy.mil
NR 7
TC 19
Z9 19
U1 2
U2 29
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD FEB 8
PY 2013
VL 339
IS 6120
DI 10.1126/science.1228605
PG 2
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 085BM
UT WOS:000314585600019
PM 23393246
ER
PT J
AU Jensen, KL
AF Jensen, Kevin L.
TI Scattering and the relationship between quantum efficiency and emittance
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID PHOTOCATHODES; PHOTOEMISSION; METALS
AB Simple models of the quantum efficiency (QE) and emittance (epsilon(n,rms)) of metals are based on the neglect of scattered electrons to the emission current. The leading order terms in the Fowler-Dubridge equation for QE and the Dowell-Schmerge equation for emittance entail QE proportional to epsilon(4)(n). Here, a method to account for next-order contributions and the impact of scattered electrons to the relation is given. [http://dx.doi.org/10.1063/1.4790874]
C1 USN, Res Lab, Washington, DC 20375 USA.
RP Jensen, KL (reprint author), USN, Res Lab, Code 6843, Washington, DC 20375 USA.
RI Jensen, Kevin/I-1269-2015
OI Jensen, Kevin/0000-0001-8644-1680
FU Joint Technology Office; Office of Naval Research
FX We thank the Joint Technology Office and the Office of Naval Research
for their support. We also thank (alph) D. W. Feldman, E. J. Montgomery,
P. G. O'Shea, J. L. Shaw, and J. E. Yater for numerous useful
discussions.
NR 18
TC 2
Z9 2
U1 1
U2 11
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
J9 J APPL PHYS
JI J. Appl. Phys.
PD FEB 7
PY 2013
VL 113
IS 5
AR 056101
DI 10.1063/1.4790874
PG 3
WC Physics, Applied
SC Physics
GA 087FH
UT WOS:000314746200089
ER
PT J
AU Swider-Lyons, KE
Campbell, SA
AF Swider-Lyons, Karen E.
Campbell, Stephen A.
TI Physical Chemistry Research Toward Proton Exchange Membrane Fuel Cell
Advancement
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID OXYGEN REDUCTION REACTION; RAY-ABSORPTION SPECTROSCOPY;
DENSITY-FUNCTIONAL THEORY; OXIDE-SUPPORTED PLATINUM; CATALYST LAYERS;
TANTALUM OXYPHOSPHATE; ELECTRON TOMOGRAPHY; HYDROGEN OXIDATION; ALLOY
CATALYSTS; ELECTROCATALYSTS
AB Hydrogen fuel cells, the most common type of which are proton exchange membrane fuel cells (PEMFCs), are on a rapid path to commercialization. We credit physical chemistry research in oxygen reduction electrocatalysis and theory with significant breakthroughs, enabling more cost-effective fuel cells. However, most of the physical chemistry has been restricted to studies of platinum and related alloys. More work is needed to better understand electrocatalysts generally in terms of properties and characterization. While the advent of such highly active catalysts will enable smaller, less expensive, and more powerful stacks, they will require better understanding and a complete restructuring of the diffusion media in PEMFCs to facilitate faster transport of the reactants (O-2) and products (H2O). Even Ohmic losses between materials become more important at high power. Such lessons from PEMFC research are relevant to other electrochemical conversion systems, including Li-air batteries and flow batteries,
C1 [Swider-Lyons, Karen E.] USN, Div Chem, Res Lab, Washington, DC 20375 USA.
[Campbell, Stephen A.] AFCC Automot Fuel Cell Cooperat Corp, Burnaby, BC V5J 5J8, Canada.
RP Swider-Lyons, KE (reprint author), USN, Div Chem, Res Lab, Washington, DC 20375 USA.
EM karen.lyons@nrl.navy.mil
FU Office of Naval Research; AFCC Automotive Fuel Cell Cooperation Corp.
FX K.S.L. is grateful to the Office of Naval Research for financial
support. We also thank Drs. Benjamin Gould, Yannick Garsany, and Olga
Baturina for providing MEA data and valuable discussions. Professor Dave
Ramaker provided insights into the first-principles theories. The
high-angle annular dark-field scanning tunneling electron microscopy
(HAADF STEM) figures are credited to Karren More, Oak Ridge National
Laboratory. S.A.C. thanks AFCC Automotive Fuel Cell Cooperation Corp.
for financial support.
NR 77
TC 20
Z9 21
U1 2
U2 67
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD FEB 7
PY 2013
VL 4
IS 3
BP 393
EP 401
DI 10.1021/jz3019012
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 089JT
UT WOS:000314907500010
PM 26281730
ER
PT J
AU Joo, S
Kim, T
Shin, SH
Lim, JY
Hong, J
Song, JD
Chang, J
Lee, HW
Rhie, K
Han, SH
Shin, KH
Johnson, M
AF Joo, Sungjung
Kim, Taeyueb
Shin, Sang Hoon
Lim, Ju Young
Hong, Jinki
Song, Jin Dong
Chang, Joonyeon
Lee, Hyun-Woo
Rhie, Kungwon
Han, Suk Hee
Shin, Kyung-Ho
Johnson, Mark
TI Magnetic-field-controlled reconfigurable semiconductor logic
SO NATURE
LA English
DT Article
ID SILICON; MAGNETOCONCENTRATION
AB Logic devices based on magnetism show promise for increasing computational efficiency while decreasing consumed power. They offer zero quiescent power and yet combine novel functions such as programmable logic operation and non-volatile built-in memory(1-5). However, practical efforts to adapt a magnetic device to logic suffer from a low signal-to-noise ratio and other performance attributes that are not adequate for logic gates. Rather than exploiting magnetoresistive effects that result from spin-dependent transport of carriers, we have approached the development of a magnetic logic device in a different way: we use the phenomenon of large magnetoresistance found in non-magnetic semiconductors in high electric fields(6,7). Here we report a device showing a strong diode characteristic that is highly sensitive to both the sign and the magnitude of an external magnetic field, offering a reversible change between two different characteristic states by the application of a magnetic field. This feature results from magnetic control of carrier generation(8) and recombination in an InSb p-n bilayer channel(9). Simple circuits combining such elementary devices are fabricated and tested, and Boolean logic functions including AND, OR, NAND and NOR are performed. They are programmed dynamically by external electric or magnetic signals, demonstrating magnetic-field-controlled semiconductor reconfigurable logic at room temperature. This magnetic technology permits a new kind of spintronic device, characterized as a current switch rather than a voltage switch, and provides a simple and compact platform for non-volatile reconfigurable logic devices.
C1 [Joo, Sungjung; Kim, Taeyueb; Chang, Joonyeon; Han, Suk Hee; Shin, Kyung-Ho] KIST, Spin Convergence Res Ctr, Seoul 130650, South Korea.
[Joo, Sungjung; Kim, Taeyueb; Hong, Jinki; Rhie, Kungwon] Korea Univ, Dept Display & Semicond Phys, Sejong 339700, South Korea.
[Shin, Sang Hoon; Lim, Ju Young; Song, Jin Dong] KIST, Nano Photon Res Ctr, Seoul 130650, South Korea.
[Lee, Hyun-Woo] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea.
[Johnson, Mark] USN, Res Lab, Washington, DC 20375 USA.
RP Hong, J (reprint author), Korea Univ, Dept Display & Semicond Phys, Sejong 339700, South Korea.
EM jkhongjkhong@korea.ac.kr; jdsong@kist.re.kr
RI Lee, Hyun-Woo/B-8995-2008
OI Lee, Hyun-Woo/0000-0002-1648-8093
FU KIST; NRF; MEST [2010-0000506, 2011-0012386, 2012-0005631, 2012K001280];
industrial strategic technology development programme; MKE [KI002182];
GRL; Office of Naval Research
FX This work was supported by the KIST vision 21 programme, NRF grants
funded by MEST (2010-0000506,2011-0012386 and 2012-0005631), the
industrial strategic technology development programme funded by MKE
(KI002182), the Dream project, MEST (2012K001280), GRL and the Office of
Naval Research.
NR 21
TC 38
Z9 38
U1 4
U2 145
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
J9 NATURE
JI Nature
PD FEB 7
PY 2013
VL 494
IS 7435
BP 72
EP 76
DI 10.1038/nature11817
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 087DJ
UT WOS:000314741200036
PM 23364687
ER
PT J
AU Gallagher, TQ
Brigger, MT
Hartnick, CJ
AF Gallagher, Thomas Q.
Brigger, Matthew T.
Hartnick, Christopher J.
TI Bleeding Risk and Dexamethasone Use in Children Undergoing Tonsillectomy
Reply
SO JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION
LA English
DT Letter
C1 [Gallagher, Thomas Q.] USN, Med Ctr Portsmouth, Dept Otolaryngol, Portsmouth, VA USA.
[Brigger, Matthew T.] USN, San Diego Med Ctr, Dept Otolaryngol, San Diego, CA 92152 USA.
[Hartnick, Christopher J.] Massachusetts Eye & Ear Infirm, Dept Pediat Otolaryngol, Boston, MA 02114 USA.
RP Gallagher, TQ (reprint author), USN, Med Ctr Portsmouth, Dept Otolaryngol, Portsmouth, VA USA.
EM christopher_hartnick@meei.harvard.edu
NR 2
TC 1
Z9 1
U1 0
U2 2
PU AMER MEDICAL ASSOC
PI CHICAGO
PA 330 N WABASH AVE, STE 39300, CHICAGO, IL 60611-5885 USA
SN 0098-7484
EI 1538-3598
J9 JAMA-J AM MED ASSOC
JI JAMA-J. Am. Med. Assoc.
PD FEB 6
PY 2013
VL 309
IS 5
BP 437
EP 438
DI 10.1001/jama.2012.113521
PG 2
WC Medicine, General & Internal
SC General & Internal Medicine
GA 083LY
UT WOS:000314466900012
PM 23385257
ER
PT J
AU Bermudez, VM
AF Bermudez, V. M.
TI Investigation of the Interaction of gamma-Al2O3 with Aqueous Solutions
of Dimethyl Methylphosphonate Using Infrared Multiple Internal
Reflection Spectroscopy
SO LANGMUIR
LA English
DT Article
ID HYDROLYSIS RATE CONSTANTS; ALUMINUM-OXIDE; METAL-OXIDES; ADSORBED
ORGANOPHOSPHONATES; VIBRATIONAL-SPECTRA; PHOSPHONATE ESTERS; BASIC
HYDROLYSIS; SILICA SURFACES; GAMMA-ALUMINA; AB-INITIO
AB The interaction of dilute solutions of dimethyl methylphosphonate (DMMP) in H2O with thin porous layers of gamma-Al2O3 has been studied under steady-state conditions using infrared multiple-internal-reflection spectroscopy. Upon the initial introduction of the DMMP solution to a previously H2O-saturated surface, DMMP diffuses into the porous layer and displaces weakly hydrogen-bonded H2O molecules. This is accompanied by hydrolysis of the gamma-Al2O3 to form Al(OH)(3) and/or AlO(OH). The P=O group of DMMP interacts predominantly with H2O and gives no clear indication of bonding to the oxide surface itself, from which it is inferred that the displacement of weakly adsorbed H2O results from the interaction of acidic Al-OH sites with the methoxy O atoms of DMMP. No hydrolysis of the DMMP, either in solution or in contact with the oxide, was detectable under the present conditions. The results have practical implications in the decontamination of materials following exposure to toxic reagents related to DMMP.
C1 USN, Div Elect Sci & Technol, Res Lab, Washington, DC 20375 USA.
RP Bermudez, VM (reprint author), USN, Div Elect Sci & Technol, Res Lab, Washington, DC 20375 USA.
EM victor.bermudez@nrl.navy.mil
FU Defense Threat Reduction Agency (DTRA) [TAS-CBS.FATE.03.10.NRL.001]
FX This work was funded and supported by Contract
TAS-CBS.FATE.03.10.NRL.001 from the Defense Threat Reduction Agency
(DTRA). C. P. Tripp is thanked for helpful information on the sample
preparation, and J. C. Culbertson is thanked for help with the Raman
measurements. We are grateful to F. K. Perkins for growing the thermal
a-SiO2 layer.
NR 60
TC 3
Z9 3
U1 3
U2 54
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD FEB 5
PY 2013
VL 29
IS 5
BP 1483
EP 1489
DI 10.1021/la304744u
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 086HZ
UT WOS:000314676000020
PM 23350945
ER
PT J
AU Sergeev, E
Grach, S
Shindin, A
Mishin, E
Bernhardt, P
Briczinski, S
Isham, B
Broughton, M
LaBelle, J
Watkins, B
AF Sergeev, E.
Grach, S.
Shindin, A.
Mishin, E.
Bernhardt, P.
Briczinski, S.
Isham, B.
Broughton, M.
LaBelle, J.
Watkins, B.
TI Artificial Ionospheric Layers during Pump Frequency Stepping Near the
4th Gyroharmonic at HAARP
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID STIMULATED ELECTROMAGNETIC EMISSIONS; SPECTRA; PLASMA
AB We report on artificial descending plasma layers created in the ionosphere F region by high-power high-frequency (HF) radio waves from High-frequency Active Auroral Research Program at frequencies f(0) near the fourth electron gyroharmonic 4f(ce). The data come from concurrent measurements of the secondary escaping radiation from the HF-pumped ionosphere, also known as stimulated electromagnetic emission, reflected probing signals at f(0), and plasma line radar echoes. The artificial layers appeared only for injections along the magnetic field and f(0) > 4f(ce) at the nominal HF interaction altitude in the background ionosphere. Their average downward speed similar to 0.5 km/s holds until the terminal altitude where the local fourth gyroharmonic matches f(0). The total descent increases with the nominal offset f(0) - 4f(ce). DOI: 10.1103/PhysRevLett.110.065002
C1 [Sergeev, E.; Grach, S.; Shindin, A.] Radiophys Res Inst, Nizhnii Novgorod 603950, Russia.
[Sergeev, E.; Grach, S.; Shindin, A.] Lobachevsky State Univ Nizhny Novgorod, Nizhnii Novgorod 603950, Russia.
[Mishin, E.] USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Bernhardt, P.; Briczinski, S.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Isham, B.] Interamer Univ, Dept Elect & Comp Engn, Bayamon, PR 00957 USA.
[Broughton, M.; LaBelle, J.] Dartmouth Coll, Dept Phys, Hanover, NH 03755 USA.
[Watkins, B.] Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA.
RP Sergeev, E (reprint author), Radiophys Res Inst, 25A-12 Bolshaya Pecherskaya St, Nizhnii Novgorod 603950, Russia.
RI Shindin, Alexey/R-8728-2016;
OI Shindin, Alexey/0000-0003-1242-5666; Grach, Savely/0000-0003-1726-4793
FU EOARD/AFOSR; RFBR [11-02-00125-a, 12-02-00513-a]; Ministry of Education
and Science of the Russian Federation [14.132.21.1434]; AFOSR
[W911NF-11-1-0217]; ONR [W911NF-11-1-0217]; ARO [W911NF-11-1-0217]
FX HAARP is a DoD program operated jointly by the U.S. Air Force and U.S.
Navy. E.S., S.G., and A.S. were supported by EOARD/AFOSR and RFBR Grants
No. 11-02-00125-a and No. 12-02-00513-a and the Ministry of Education
and Science of the Russian Federation, Project No. 14.132.21.1434. E.M.,
P.B. and S.B., and B.I. were supported by AFOSR, ONR, and ARO Grant No.
W911NF-11-1-0217, respectively.
NR 25
TC 13
Z9 15
U1 0
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD FEB 5
PY 2013
VL 110
IS 6
AR 065002
DI 10.1103/PhysRevLett.110.065002
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 086MD
UT WOS:000314687300020
PM 23432261
ER
PT J
AU Gavrilov, D
Maeva, E
Grube, O
Vodyanoy, I
Maev, R
AF Gavrilov, Dmitry
Maeva, Elena
Grube, Oleg
Vodyanoy, Igor
Maev, Roman
TI EXPERIMENTAL COMPARATIVE STUDY OF THE APPLICABILITY OF INFRARED
TECHNIQUES FOR NON-DESTRUCTIVE EVALUATION OF PAINTINGS
SO JOURNAL OF THE AMERICAN INSTITUTE FOR CONSERVATION
LA English
DT Article
DE thermography; nondestructive; analysis; defectoscopy
ID THERMOGRAPHY
AB Noninvasive methods of near-infrared, short-wave infrared, and thermographic inspection of artwork are described in this article and compared in terms of their ability to reveal both hidden graphite underdrawings and subsurface degradations. This inspection aids the understanding of the artist's work methods and locates hidden areas of damage. While all three inspection methods are suitable for locating sketches and changes in composition, this study has proven that thermographic methods are very useful in detecting structural defects such as delaminations and cavities, as demonstrated with experiments conducted on test samples and real paintings.
C1 [Gavrilov, Dmitry; Maeva, Elena; Maev, Roman] Univ Windsor, Inst Diagnost Imaging Res, Windsor, ON N9B 3P4, Canada.
[Vodyanoy, Igor] Off Naval Res, Arlington, VA 22203 USA.
RP Gavrilov, D (reprint author), Univ Windsor, Inst Diagnost Imaging Res, Windsor, ON N9B 3P4, Canada.
EM gavrilo@uwindsor.ca; maeva@uwindsor.ca; igor.vodyanoy@navy.mil;
maev@uwindsor.ca
NR 30
TC 3
Z9 3
U1 0
U2 2
PU MANEY PUBLISHING
PI LEEDS
PA STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND
SN 0197-1360
J9 J AM INST CONSERV
JI J. Am. Inst. Conserv.
PD FEB
PY 2013
VL 52
IS 1
BP 48
EP 60
DI 10.1179/0197136012.Z.0000000002
PG 13
WC Humanities, Multidisciplinary
SC Arts & Humanities - Other Topics
GA 227IB
UT WOS:000325104800004
ER
PT J
AU Belden, J
AF Belden, Jesse
TI Calibration of multi-camera systems with refractive interfaces
SO EXPERIMENTS IN FLUIDS
LA English
DT Article
ID PARTICLE IMAGE VELOCIMETRY; SELF-CALIBRATION
AB A method for performing bundle adjustment-based calibration of a multi-camera setup with refractive interfaces in the optical path is presented. The method contributes to volumetric multi-camera fluid experiments, where it is desirable to avoid tedious alignment of calibration grids in multiple locations and where a premium is placed on accurately locating world points. Cameras are calibrated from image point correspondences of unknown world points, and the location of the refractive interface need not be accurately known a priori. Physical models for two practically relevant imaging configurations are presented; the first is a planar wall separating cameras and a liquid, and the second is a liquid-containing cylindrical tank with finite wall thickness. Each model allows the cameras to be in general location and orientation relative to the interface. A thorough numerical study demonstrates the ability of the calibration method to accurately estimate camera parameters, interface orientation, and world point locations. The numerical study explores the convergence, accuracy, and sensitivity of the calibration method as a function of initialization, camera configuration, volume size, and interface type. The technique is applied to real calibration data where the algorithm is supplied with errant initial parameter estimates and shown to provide accurate results. The ease of implementation and accuracy of the refractive calibration method make the approach attractive for three-dimensional multi-camera fluid measurement methods.
C1 USN, Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Belden, J (reprint author), USN, Undersea Warfare Ctr, Newport, RI 02841 USA.
EM jesse.belden@navy.mil
FU Naval Undersea Warfare Center In-house Laboratory Independent Research
(ILIR) funds
FX This work was funded by Naval Undersea Warfare Center In-house
Laboratory Independent Research (ILIR) funds (monitored by Dr. Tony
Ruffa). The author also greatly acknowledges the insightful and critical
comments and suggestions of the reviewers, which led to a much improved
manuscript.
NR 35
TC 5
Z9 5
U1 0
U2 15
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0723-4864
J9 EXP FLUIDS
JI Exp. Fluids
PD FEB
PY 2013
VL 54
IS 2
AR 1463
DI 10.1007/s00348-013-1463-0
PG 18
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA 133RE
UT WOS:000318156200018
ER
PT J
AU Kilic, E
Stanica, P
AF Kilic, E.
Stanica, P.
TI GENERAL APPROACH IN COMPUTING SUMS OF PRODUCTS OF BINARY SEQUENCES
SO HACETTEPE JOURNAL OF MATHEMATICS AND STATISTICS
LA English
DT Article
DE Second order recurrences; Sums; Products
AB In this paper we find a general approach to find closed forms of sums of products of arbitrary sequences satisfying the same recurrence with different initial conditions. We apply successfully our technique to sums of products of such sequences with indices in (arbitrary) arithmetic progressions. It generalizes many results from literature. We propose also an extension where the sequences satisfy different recurrences.
C1 [Kilic, E.] TOBB Econ & Technol Univ, Dept Math, TR-06560 Ankara, Turkey.
[Stanica, P.] USN, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
RP Kilic, E (reprint author), TOBB Econ & Technol Univ, Dept Math, TR-06560 Ankara, Turkey.
EM ekilic@etu.edu.tr; pstanica@nsp.edu
NR 12
TC 0
Z9 0
U1 0
U2 3
PU HACETTEPE UNIV, FAC SCI
PI BEYTEPE
PA HACETTEPE UNIV, FAC SCI, BEYTEPE, ANKARA 06800, TURKEY
SN 1303-5010
J9 HACET J MATH STAT
JI Hacet. J. Math. Stat.
PD FEB
PY 2013
VL 42
IS 1
BP 1
EP 7
PG 7
WC Mathematics; Statistics & Probability
SC Mathematics
GA 142VX
UT WOS:000318826800001
ER
PT J
AU Barr, ED
Guillemot, L
Champion, DJ
Kramer, M
Eatough, RP
Lee, KJ
Verbiest, JPW
Bassa, CG
Camilo, F
Celik, O
Cognard, I
Ferrara, EC
Freire, PCC
Janssen, GH
Johnston, S
Keith, M
Lyne, AG
Michelson, PF
Parkinson, PMS
Ransom, SM
Ray, PS
Stappers, BW
Wood, KS
AF Barr, E. D.
Guillemot, L.
Champion, D. J.
Kramer, M.
Eatough, R. P.
Lee, K. J.
Verbiest, J. P. W.
Bassa, C. G.
Camilo, F.
Celik, O.
Cognard, I.
Ferrara, E. C.
Freire, P. C. C.
Janssen, G. H.
Johnston, S.
Keith, M.
Lyne, A. G.
Michelson, P. F.
Parkinson, P. M. Saz
Ransom, S. M.
Ray, P. S.
Stappers, B. W.
Wood, K. S.
TI Pulsar searches of Fermi unassociated sources with the Effelsberg
telescope
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE pulsars: general; pulsars: individual: PSR J1745+1017; gamma-rays:
general
ID LARGE-AREA TELESCOPE; GAMMA-RAY PULSARS; EGRET ERROR BOXES; MILLISECOND
PULSAR; RADIO PULSARS; MAGNETIC-FIELDS; SOURCE CATALOG; LIGHT CURVES;
DISCOVERY; EMISSION
AB Using the 100-m Effelsberg radio telescope operating at 1.36 GHz, we have performed a targeted radio pulsar survey of 289 unassociated gamma-ray sources discovered by the Large Area Telescope (LAT) aboard the Fermi satellite and published in the 1FGL catalogue (Abdo et al. 2010a). This survey resulted in the discovery of millisecond pulsar J1745+1017, which resides in a short-period binary system with a low-mass companion, M-c,M-min similar to 0.0137 M-circle dot, indicative of 'black widow' type systems. A 2-yr timing campaign has produced a refined radio ephemeris, accurate enough to allow for phase-folding of the LAT photons, resulting in the detection of a dual-peaked gamma-ray light curve, proving that PSR J1745+1017 is the source responsible for the gamma-ray emission seen in 1FGL J1745.5+1018 (2FGL J1745.6+1015; Nolan et al. 2012). We find the gamma-ray spectrum of PSR J1745+1017 to be well modelled by an exponentially cut-off power law with cut-off energy 3.2 GeV and photon index 1.6. The observed sources are known to contain a further 10 newly discovered pulsars which were undetected in this survey. Our radio observations of these sources are discussed and in all cases limiting flux densities are calculated. The reasons behind the seemingly low yield of discoveries are also discussed.
C1 [Barr, E. D.; Guillemot, L.; Champion, D. J.; Kramer, M.; Eatough, R. P.; Lee, K. J.; Verbiest, J. P. W.; Freire, P. C. C.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Kramer, M.; Bassa, C. G.; Janssen, G. H.; Lyne, A. G.; Stappers, B. W.] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England.
[Camilo, F.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Camilo, F.] Arecibo Observ, Arecibo, PR 00612 USA.
[Celik, O.; Ferrara, E. C.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Celik, O.] Ctr Res & Explorat Space Sci & Technol CRESST, Greenbelt, MD 20771 USA.
[Celik, O.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA.
[Celik, O.] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA.
[Cognard, I.] CNRS, Lab Phys & Chim Environm, LPCE, UMR 6115, F-45071 Orleans 02, France.
[Cognard, I.] Observ Paris, Stn Radioastron Nancay, CNRS INSU, F-18330 Nancay, France.
[Johnston, S.; Keith, M.] Australia Telescope Natl Facil, CSIRO Astron & Space Sci, Epping, NSW 1710, Australia.
[Michelson, P. F.] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, WW Hansen Expt Phys Lab, Dept Phys, Stanford, CA 94305 USA.
[Michelson, P. F.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Parkinson, P. M. Saz] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA.
[Parkinson, P. M. Saz] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Ransom, S. M.] Natl Radio Astron Observ NRAO, Charlottesville, VA 22903 USA.
[Ray, P. S.; Wood, K. S.] USN, Space Sci Div, Res Lab, Washington, DC 20375 USA.
RP Barr, ED (reprint author), Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany.
EM ebarr@mpifr-bonn.mpg.de; guillemo@mpifr-bonn.mpg.de
RI Saz Parkinson, Pablo Miguel/I-7980-2013;
OI Champion, David/0000-0003-1361-7723; Ransom, Scott/0000-0001-5799-9714;
Ray, Paul/0000-0002-5297-5278
FU European Union under Marie-Curie Intra-European Fellowship [236394];
European Research Council under ERC Starting Grant Beacon [279702]; UK
Science and Technology Facilities Council (STFC)
FX JPWV acknowledges support by the European Union under Marie-Curie
Intra-European Fellowship 236394.; PCCF and JPWV acknowledge support by
the European Research Council under ERC Starting Grant Beacon (contract
no. 279702).; We would like to thank Matthew Kerr for his input
regarding initial source selection. Pulsar research and observations at
Jodrell Bank Observatory have been supported through Rolling Grants from
the UK Science and Technology Facilities Council (STFC).
NR 49
TC 21
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U1 0
U2 1
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0035-8711
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD FEB
PY 2013
VL 429
IS 2
BP 1633
EP 1642
DI 10.1093/mnras/sts449
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 134UC
UT WOS:000318239300056
ER
PT J
AU Sanghera, SS
Francescutti, V
Miller, A
Burke, RA
Skitzki, JJ
Kane, JM
AF Sanghera, S. S.
Francescutti, V.
Miller, A.
Burke, R. A.
Skitzki, J. J.
Kane, J. M.
TI Superficial Soft Tissue Sarcomas - Homogenous Good Outcome in a
Heterogeneous Group of Tumors
SO ANNALS OF SURGICAL ONCOLOGY
LA English
DT Meeting Abstract
CT 66th Annual Cancer Symposium of the Society-of-Surgical-Oncology (SSO)
CY MAR 06-09, 2013
CL National Harbor, MD
SP Soc Surg Oncol (SSO)
C1 [Sanghera, S. S.; Francescutti, V.; Miller, A.; Skitzki, J. J.; Kane, J. M.] Roswell Pk Canc Inst, Buffalo, NY 14263 USA.
[Burke, R. A.] USN, Med Ctr, Portsmouth, VA USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1068-9265
J9 ANN SURG ONCOL
JI Ann. Surg. Oncol.
PD FEB
PY 2013
VL 20
SU 1
BP S123
EP S123
PG 1
WC Oncology; Surgery
SC Oncology; Surgery
GA 133XR
UT WOS:000318174700363
ER
PT J
AU Vreeland, TJ
Berry, JS
Trappey, AF
Hale, D
Clifton, GT
Sears, A
Shumway, NM
Holmes, JP
Ponniah, S
Mittendorf, EA
Ioannides, CG
Peoples, GE
AF Vreeland, T. J.
Berry, J. S.
Trappey, A. F.
Hale, D.
Clifton, G. T.
Sears, A.
Shumway, N. M.
Holmes, J. P.
Ponniah, S.
Mittendorf, E. A.
Ioannides, C. G.
Peoples, G. E.
TI Use of an Attenuated Version of a Strongly Immunogenic, Peptide-based
Vaccine to Enhance an Anti-cancer Immune Response against Folate
Receptor-alpha (FR alpha)
SO ANNALS OF SURGICAL ONCOLOGY
LA English
DT Meeting Abstract
CT 66th Annual Cancer Symposium of the Society-of-Surgical-Oncology (SSO)
CY MAR 06-09, 2013
CL National Harbor, MD
SP Soc Surg Oncol (SSO)
C1 [Vreeland, T. J.; Berry, J. S.; Trappey, A. F.; Hale, D.; Clifton, G. T.; Sears, A.; Shumway, N. M.; Peoples, G. E.] Brooke Army Med Ctr, San Antonio, TX USA.
[Mittendorf, E. A.] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA.
[Ponniah, S.; Ioannides, C. G.] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
[Holmes, J. P.] USN, Dept Hematol & Med Oncol, San Diego Med Ctr, San Diego, CA 92152 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1068-9265
J9 ANN SURG ONCOL
JI Ann. Surg. Oncol.
PD FEB
PY 2013
VL 20
SU 1
BP S59
EP S59
PG 1
WC Oncology; Surgery
SC Oncology; Surgery
GA 133XR
UT WOS:000318174700156
ER
PT J
AU Reniers, AJHM
Gallagher, EL
MacMahan, JH
Brown, JA
van Rooijen, AA
de Vries, JSMV
van Prooijen, BC
AF Reniers, A. J. H. M.
Gallagher, E. L.
MacMahan, J. H.
Brown, J. A.
van Rooijen, A. A.
de Vries, J. S. M. van Thiel
van Prooijen, B. C.
TI Observations and modeling of steep-beach grain-size variability
SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
LA English
DT Article
ID FLOW SEDIMENT TRANSPORT; SURF-ZONE; SHEET FLOW; SWASH ZONE; GENERATED
TURBULENCE; BOUNDARY-LAYER; BREAKING WAVES; SHEAR-STRESS; SUSPENSION;
ACCELERATION
AB Novel observations of surface grain-size distributions are used in combination with intra-wave modeling to examine the processes responsible for the sorting of sediment grains on a relatively steep beach (slope = 1:7.5). The field observations of the mean grain size collected with a digital camera system at consecutive low and high tides for a 2 week period show significant temporal and spatial variation. This variation is reproduced by the modeling approach when the surf zone flow-circulation is relatively weak, showing coarse grain sizes at the location of the shore break and finer sediment onshore and offshore of the shore break. The model results suggest that grain size sorting is dominated by the wave-breaking-related suspended sediment transport which removes finer sediment from the shore break and transports it both on-shore and offshore. The transport capacity of wave-breaking-related suspended sediment is controlled by the sediment response time scale in the advection-diffusion equation, where small (large) values promote onshore (offshore) transport. Comparisons with the observed beach profile evolution suggest a relatively short time scale for the suspended sediment response which could be explained by the vigorous breaking of the waves at the shore break. Citation: Reniers, A. J. H. M., E. L. Gallagher, J. H. MacMahan, J. A. Brown, A. A. van Rooijen, J. S. M. van Thiel de Vries, and B. C. van Prooijen (2013), Observations and modeling of steep-beach grain-size variability, J. Geophys. Res. Oceans, 118, 577-591, doi:10.1029/2012JC008073.
C1 [Reniers, A. J. H. M.] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA.
[Gallagher, E. L.] Franklin & Marshall Coll, Lancaster, PA 17604 USA.
[MacMahan, J. H.; Brown, J. A.] USN, Postgrad Sch, Monterey, CA USA.
[van Rooijen, A. A.; de Vries, J. S. M. van Thiel] Deltares, Delft, Netherlands.
[van Rooijen, A. A.; de Vries, J. S. M. van Thiel; van Prooijen, B. C.] Delft Univ Technol, Delft, Netherlands.
RP Reniers, AJHM (reprint author), Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA.
EM areniers@rsmas.miami.edu
FU Deltares-Rijkswaterstaat Coastal Maintenance Research Program
Kustlijnzorg; National Science Foundation; Office of Naval Research
Coastal Geosciences grants; NSF [EAR0952225, EAR0952164, OCE0340758,
EAR-0952182, OCE-0926750]; ONR [N000140710556, N000140510153,
N0001409WR20221, N0001409WR20222]
FX This work was funded by Deltares-Rijkswaterstaat Coastal Maintenance
Research Program Kustlijnzorg, the National Science Foundation grants,
and the Office of Naval Research Coastal Geosciences grants. AR was
funded through NSF grant EAR0952225 and ONR grant N000140710556. EG was
funded through NSF grants EAR0952164 and OCE0340758 and ONR grant
N000140510153. JM was funded through NSF grants EAR-0952182 and
OCE-0926750 and ONR grants N0001409WR20221 and N0001409WR20222. Friends
and colleagues who also helped enormously include Ian Smithgall, Clement
Gandon, Ron Cowen, Keith Wycoff, and Ed Thornton.
NR 54
TC 14
Z9 14
U1 5
U2 34
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 FEB
PY 2013
VL 118
IS 2
BP 577
EP 591
DI 10.1029/2012JC008073
PG 15
WC Oceanography
SC Oceanography
GA 129LK
UT WOS:000317840700002
ER
PT J
AU Dossing, A
Jackson, HR
Matzka, J
Einarsson, I
Rasmussen, TM
Olesen, AV
Brozena, JM
AF Dossing, A.
Jackson, H. R.
Matzka, J.
Einarsson, I.
Rasmussen, T. M.
Olesen, A. V.
Brozena, J. M.
TI On the origin of the Amerasia Basin and the High Arctic Large Igneous
Province-Results of new aeromagnetic data
SO EARTH AND PLANETARY SCIENCE LETTERS
LA English
DT Article
DE Arctic; aeromagnetics; Alpha Ridge; Lomonosov Ridge; Large Igneous
Province; plate tectonics
ID FRANZ JOSEF LAND; LOMONOSOV RIDGE; CRUSTAL STRUCTURE; ALPHA-RIDGE;
CONTINENTAL-MARGIN; SEISMIC DATA; MAGNETIC-ANOMALIES; ELLESMERE-ISLAND;
MENDELEEV RIDGE; MAKAROV BASINS
AB The history of the 2.5 million km(2) Amerasia Basin (sensu lato) is in many ways the least known in the global tectonic system. Radically different hypotheses proposed to explain its origin are supported only by inconclusive and/or indirect observations and several outstanding issues on the origin of the Basin remain unaddressed. The difficulty lies in the geodynamic evolution and signature of the Basin being overprinted by excess volcanism of the Alpha-Mendeleev Ridge complex, part of the High Arctic Large Igneous Province (HALIP) and one of the largest (>1 million km(2)) and most intense magmatic and magnetic complexes on Earth. Here, we present the results of a 550,000 km(2) aerogeophysical survey over the poorly explored Lomonosov Ridge (near Greenland) and adjoining Amerasia and Eurasia Basins that provides the first direct evidence for consistent linear magnetic features between the Alpha and Lomonosov Ridges, enabling the tectonic origin of both the Amerasia Basin and the HALIP to be constrained. A landward Lower Cretaceous (similar to 138-125(120) Ma) giant dyke swarm (minimum 350 x 800 km(2)) and tentative oceanward Barremian (or alternatively lower Valanginian-Barremian) seafloor spreading anomalies are revealed. Prior to Cenozoic opening of the Eurasia Basin the giant dyke swarm stretched from Franz Josef Land to the southern Alpha Ridge and possibly further to Queen Elisabeth Islands, Canada. The swarm points towards a 250-km-wide donut-shaped anomaly on the southern Alpha Ridge, which we propose was the centre of the HALIP mantle plume, suggesting that pronounced intrusive activity, associated with an Alpha Ridge mantle plume, took place well before the Late Cretaceous Superchron and caused continental breakup in the northern Amerasia Basin. Our results imply that at least the southern Alpha Ridge as well as large parts of the area between the Lomonosov and southern Alpha Ridges are highly attenuated continental crust formed by poly-phase breakup with LIP volcanic addition. Significantly, our results are consistent with an early (similar to pre-120 Ma) overall continental scale rotational opening of the Amerasia Basin in which the Eurasian continental margin is rifted from the Canadian-southern Alpha Ridge margin about one or more poles in the Mackenzie Delta (Alaska). The findings provide a key to resolving Arctic plate reconstructions and LIPs in the Mesozoic. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Dossing, A.; Matzka, J.; Einarsson, I.; Olesen, A. V.] DTU Space, Natl Space Inst, DK-2850 Lyngby, Denmark.
[Jackson, H. R.] GSCA, Halifax, NS, Canada.
[Rasmussen, T. M.] Geol Survey Denmark & Greenland GEUS, DK-1350 Copenhagen, Denmark.
[Brozena, J. M.] USN, Res Lab, Washington, DC 20375 USA.
RP Dossing, A (reprint author), DTU Space, Natl Space Inst, DK-2850 Lyngby, Denmark.
EM ards@space.dtu.dk
RI Matzka, Jurgen/J-9420-2014; Olesen, Arne /M-3398-2016;
OI Matzka, Jurgen/0000-0001-9926-2796; Olesen, Arne /0000-0001-9555-9787;
Dossing, Arne/0000-0003-0369-3984
NR 78
TC 41
Z9 43
U1 0
U2 27
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0012-821X
J9 EARTH PLANET SC LETT
JI Earth Planet. Sci. Lett.
PD FEB 1
PY 2013
VL 363
BP 219
EP 230
DI 10.1016/j.epsl.2012.12.013
PG 12
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 113CH
UT WOS:000316643300021
ER
PT J
AU Boulais, KA
Santiago, F
Wick, PL
Mejeur, JM
Rayms-Keller, A
Lowry, MS
Long, KJ
Sessions, WD
AF Boulais, Kevin A.
Santiago, Francisco
Wick, Peter L., Jr.
Mejeur, Joel M.
Rayms-Keller, Alfredo
Lowry, Michael S.
Long, Karen J.
Sessions, Walter D.
TI Circuit Analysis of Photosensitive Capacitance in Semi-Insulating GaAs
SO IEEE TRANSACTIONS ON ELECTRON DEVICES
LA English
DT Article
DE Capacitance; EL2; photosensitive; reactance; undoped semi-insulating
GaAs (USI)
ID CAPTURE; CENTERS; LEVEL; FILMS; EL2
AB We describe a circuit model for photosensitive capacitance in bulk semi-insulating GaAs toward tunable resonant applications. Capacitances from two separate regions are considered to interpret experimental results. A smaller valued capacitance exists between the depletion edges within the bulk material. Photodoping in this region progressively shorts out the bulk capacitance, leaving only the higher valued depletion capacitance. The depletion capacitance also increases with illumination, and numerical simulation is used to aid interpretation. Thus, the series combination of capacitance can be optically varied over orders of magnitude. Our results indicate that capacitance is nearly independent of applied voltage over a usable parameter space, making the concept attractive for linear application.
C1 [Boulais, Kevin A.; Santiago, Francisco; Wick, Peter L., Jr.; Mejeur, Joel M.; Rayms-Keller, Alfredo; Lowry, Michael S.; Long, Karen J.; Sessions, Walter D.] USN, Ctr Surface Warfare, Dahlgren Div, Dahlgren, VA 22448 USA.
RP Boulais, KA (reprint author), USN, Ctr Surface Warfare, Dahlgren Div, Dahlgren, VA 22448 USA.
EM kevin.boulais@navy.mil; francisco.santiago1@navy.mil;
peter.wick@navy.mil; joel.mejeur@navy.mil;
alfredo.rayms-keller@navy.mil; michael.s.lowry@navy.mil;
karen.j.long@navy.mil; walter.d.sessions@navy.mil
FU Naval Surface Warfare Center Dahlgren Division (NSWCDD) In-house
Laboratory Independent Research Program; Naval Innovative Science and
Engineering fund; Office of Naval Research
FX Manuscript received September 14, 2012; revised November 27, 2012;
accepted December 13, 2012. Date of publication January 9, 2013; date of
current version January 18, 2013. This work was supported in part by the
Naval Surface Warfare Center Dahlgren Division (NSWCDD) In-house
Laboratory Independent Research Program, by the Naval Innovative Science
and Engineering fund managed by NSWCDD, and by the Office of Naval
Research. The review of this paper was arranged by Editor A. Haque.
NR 23
TC 1
Z9 1
U1 1
U2 5
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9383
EI 1557-9646
J9 IEEE T ELECTRON DEV
JI IEEE Trans. Electron Devices
PD FEB
PY 2013
VL 60
IS 2
SI SI
BP 793
EP 798
DI 10.1109/TED.2012.2235070
PG 6
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA 115NB
UT WOS:000316817900038
ER
PT J
AU Day, RM
Davis, TA
Barshishat-Kupper, M
McCart, EA
Tipton, AJ
Landauer, MR
AF Day, R. M.
Davis, T. A.
Barshishat-Kupper, M.
McCart, E. A.
Tipton, A. J.
Landauer, M. R.
TI Enhanced hematopoietic protection from radiation by the combination of
genistein and captopril
SO INTERNATIONAL IMMUNOPHARMACOLOGY
LA English
DT Article
DE Radiation protection; Genistein; Captopril; Hematopoietic cell recovery;
Erythropoietin; Micronuclei
ID TOTAL-BODY IRRADIATION; ANGIOTENSIN-II; PROSTATE-CANCER; SOY
ISOFLAVONES; NECK-CANCER; STEM-CELLS; MITIGATION; MICE; THERAPY; INJURY
AB The hematopoietic system is sensitive to radiation injury, and mortality can occur due to blood cell deficiency and stem cell loss. Genistein and the angiotensin converting enzyme (ACE) inhibitor captopril are two agents shown to protect the hematopoietic system from radiation injury. In this study we examined the combination of genistein with captopril for reduction of radiation-induced mortality from hematopoietic damage and the mechanisms of radiation protection. C57BL/6J mice were exposed to 8.25 Gy Co-60 total body irradiation (TBI) to evaluate the effects of genistein and captopril alone and in combination on survival, blood cell recovery, hematopoietic progenitor cell recovery, DNA damage, and erythropoietin production. 8.25 Gy TBI resulted in 0% survival after 30 days in untreated mice. A single subcutaneous injection of genistein administered 24 h before TBI resulted in 72% survival. Administration of captopril in the drinking water, from I h through 30 days postirradiation, increased survival to 55%. Genistein plus captopril increased survival to 95%. Enhanced survival was reflected in a reduction of radiation-induced anemia, improved recovery of nucleated bone marrow cells, splenocytes and circulating red blood cells. The drug combination enhanced early recovery of marrow progenitors: erythroid (CFU-E and BFU-E), and myeloid (CFU-GEMM, CPU-GM and CFU-M). Genistein alone and genistein plus captopril protected hematopoietic progenitor cells from radiation-induced micronuclei, while captopril had no effect Captopril alone and genistein plus captopril, but not genistein alone, suppressed radiation-induced erythropoietin production. These data suggest that genistein and captopril protect the hematopoietic system from radiation injury via independent mechanisms. Published by Elsevier B.V.
C1 [Day, R. M.; Barshishat-Kupper, M.; McCart, E. A.; Tipton, A. J.] Uniformed Serv Univ Hlth Sci, Dept Pharmacol, Bethesda, MD 20814 USA.
[Davis, T. A.] USN, Dept Regenerat Med, Med Res Ctr, Silver Spring, MD USA.
[Landauer, M. R.] Armed Forces Radiobiol Res Inst, Bethesda, MD USA.
RP Day, RM (reprint author), Uniformed Serv Univ Hlth Sci, Dept Pharmacol, Bldg C,Room 2023,4301 Jones Bridge Rd, Bethesda, MD 20814 USA.
EM regina.day@usuhs.edu
FU AFRRI Research grant [RAB2GL]; DTRA [H.10025_07_R]; BUMED workunit
[604771N.C165.001.A0812]
FX Some of the authors are U.S. Government employees. This work was
prepared as part of their official duties. Copyright protection is not
available for any work of the United States Government under Title 17
U.S.C 101 defined as U.S. Government work prepared by a military service
member or U.S. Government employees as part of their official duties.
The views expressed are those of the authors and not necessarily the
views, official policy or position of the Uniformed Services University
of the Health Sciences, Armed Forces Radiobiology Research Institute,
Department of the Navy, Department of Defense, or the U.S. Federal
Government. This work was supported by: AFRRI Research grant RAB2GL
(MRL), DTRA grant H.10025_07_R (RMD and MRL), and BUMED workunit
604771N.C165.001.A0812 (TAD). MRL holds a patent on the use of
isoflavones for radioprotection. All other authors report no conflicts
of interest.
NR 43
TC 15
Z9 17
U1 1
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1567-5769
EI 1878-1705
J9 INT IMMUNOPHARMACOL
JI Int. Immunopharmacol.
PD FEB
PY 2013
VL 15
IS 2
BP 348
EP 356
DI 10.1016/j.intimp.2012.12.029
PG 9
WC Immunology; Pharmacology & Pharmacy
SC Immunology; Pharmacology & Pharmacy
GA 114VB
UT WOS:000316769700022
PM 23328620
ER
PT J
AU Littman, AJ
Jacobson, IG
Boyko, EJ
Powell, TM
Smith, TC
AF Littman, A. J.
Jacobson, I. G.
Boyko, E. J.
Powell, T. M.
Smith, T. C.
CA Millennium Cohort Study Team
TI Weight change following US military service
SO INTERNATIONAL JOURNAL OF OBESITY
LA English
DT Article
DE military veterans; weight gain; prospective; cohort; posttraumatic
stress disorder; military deployment
ID VETERANS; OBESITY; COHORT; OVERWEIGHT; VALIDITY; BURDEN
AB BACKGROUND: Although overweight and obesity are less prevalent among active-duty military personnel compared with similar persons not serving in the military, no such differences have been observed between veterans and non-veterans.
OBJECTIVES: To assess the magnitude of weight changes before, concurrent with and following discharge from the military, relative to weight during service, and to determine the demographic, service-related and psychological characteristics associated with clinically important weight gain among those who were discharged from military service during follow-up.
METHODS: Eligible Millennium Cohort Study participants (n = 38 686) completed the questionnaires approximately every 3 years (2001, 2004 and 2007) that were used to estimate annual weight changes, as well as the percentage experiencing clinically important weight gain, defined as >= 10%. Analyses were stratified by sex.
RESULTS: Weight gain was greatest around the time of discharge from service and in the 3 years before discharge (1.0-1.3 kg per year), while it was nearly half as much during service (0.6-0.7 kg per year) and >= 3 years after service ended (0.7 kg per year). Consequently, 6-year weight gain was over 2 kg greater in those who were discharged compared with those who remained in the military during follow-up (5.7 vs 3.5 kg in men; 6.3 vs 4.0 kg in women). In those who were discharged, younger age, less education, being overweight at baseline, being in the active-duty component (vs Reserve/National Guard) and having experienced deployment with combat exposures (vs non-deployment) were associated with increased risks of clinically important weight gain.
CONCLUSIONS: This study provides the first prospectively collected evidence for an increased rate of weight gain around the time of military discharge that may explain previously reported higher rates of obesity in veterans, and identifies characteristics of higher-risk groups. Discharge from military service presents a window of risk and opportunity to prevent unhealthy weight gain in military personnel and veterans. International Journal of Obesity (2013) 37, 244-253; doi:10.1038/ijo.2012.46; published online 10 April 2012
C1 [Littman, A. J.; Boyko, E. J.] Vet Affairs Puget Sound Hlth Care Syst, Seattle Epidemiol Res & Informat Ctr, Seattle, WA USA.
[Littman, A. J.] Univ Washington, Dept Epidemiol, Seattle, WA 98195 USA.
[Jacobson, I. G.; Powell, T. M.; Smith, T. C.] USN, Dept Deployment Hlth Res, Hlth Res Ctr, San Diego, CA 92152 USA.
RP Littman, AJ (reprint author), Vet Affairs Puget Sound Hlth Care Syst 152E, Seattle Epidemiol Res & Informat Ctr, 1100 Olive Way,Suite 1400, Seattle, WA 98101 USA.
EM alyson@u.washington.edu
FU Henry M Jackson Foundation for the Advancement of Military Medicine,
Rockville, MD; VA Rehabilitation Research and Development Career
Development Award [6982]; Cooperative Studies Program, Department of
Veterans; Puget Sound VA Medical Center; Department of Defense [60002]
FX We are indebted to the Millennium Cohort Study participants, without
whom these analyses would not be possible. In addition to the authors,
the Millennium Cohort Study Team includes Paul J Amoroso, MD; Gary D
Gackstetter, MD, from the Analytic Services, Inc., Arlington, VA;
Gregory C Gray, MD, MPH, from the College of Public Health and Health
Professions, University of Florida, Gainesville, FL; Tomoko Hooper, MD,
from the Departments of Preventive Medicine and Biometrics, Uniformed
Services University of Health Sciences, Bethesda, MD; James R Riddle,
DVM, MPH, from the Air Force Research Laboratory, Wright-Patterson Air
Force Base, OH; Margaret AK Ryan, MD, MPH, from Naval Hospital Camp
Pendleton, Occupational Health Department; Melissa Bagnell, MPH; Nancy
Crum-Cianflone, MD, MPH; Gia Gumbs, MPH; Nisara Granado, MPH, PhD; Jaime
Horton; Kelly Jones, MPH; Cynthia LeardMann, MPH; William Lee; Travis
Leleu; Michelle Linfesty; Gordon Lynch; Jamie McGrew; Hope McMaster,
PhD; Sheila Medina-Torne, MPH; Amanda Pietrucha, MPH; Donald Sandweiss,
MD; Amber Seelig, MPH; Beverly Sheppard; Katherine Snell; Steven
Speigle; Kari Sausedo, MA; Donald Slymen, PhD; Besa Smith, MPH, PhD;
Jennifer Walstrom; Timothy S Wells, DVM, MPH, PhD; Martin White, MPH;
James Whitmer; and Charlene Wong, MPH; from the Department of Deployment
Health Research, Naval Health Research Center, San Diego, CA. We thank
Scott L Seggerman and Greg D Boyd from the Management Information
Division, Defense Manpower Data Center, Monterey, CA. Additionally, we
thank Michelle LeWark from the Naval Health Research Center. We also
thank all the professionals from the US Army Medical Research and
Materiel Command, especially those from the Military Operational
Medicine Research Program, Fort Detrick, MD. We appreciate the support
of the Henry M Jackson Foundation for the Advancement of Military
Medicine, Rockville, MD. Dr Littman was supported by a VA Rehabilitation
Research and Development Career Development Award (#6982).; 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 the Army, Department of the Air Force, Department of
Defense, Department of Veterans Affairs or the US Government. This
material is the result of work partly supported with resources and the
use of facilities from the Cooperative Studies Program, Department of
Veterans and the Puget Sound VA Medical Center. This work represents
report 0934, supported by the Department of Defense, under work unit no.
60002. This research has been conducted in compliance with all
applicable federal regulations governing the protection of human
subjects in research (Protocol NHRC.2000.007).
NR 21
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Z9 12
U1 1
U2 7
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0307-0565
J9 INT J OBESITY
JI Int. J. Obes.
PD FEB
PY 2013
VL 37
IS 2
BP 244
EP 253
DI 10.1038/ijo.2012.46
PG 10
WC Endocrinology & Metabolism; Nutrition & Dietetics
SC Endocrinology & Metabolism; Nutrition & Dietetics
GA 117DK
UT WOS:000316932100014
PM 22491091
ER
PT J
AU Schultz, MP
Flack, KA
AF Schultz, M. P.
Flack, K. A.
TI Reynolds-number scaling of turbulent channel flow
SO PHYSICS OF FLUIDS
LA English
DT Article
ID BOUNDARY-LAYER; SPATIAL-RESOLUTION; WALL TURBULENCE; PIPE; LENGTH
AB Results of an experimental study of smooth-wall, fully developed, turbulent channel flow are presented. The Reynolds number (Re-m) based on the channel height and the bulk mean velocity ranged from 10 000 to 300 000. The present results indicate that the skin-friction coefficient (C-f) closely follows a power law for Re-m < 62 000. At higher Reynolds numbers, C-f is best described by a log law. Detailed two-component velocity measurements taken at friction Reynolds numbers of Re-tau = 1000-6000 indicate that the mean flow and Reynolds shear stress display little or no Reynolds-number dependence. The streamwise Reynolds normal stress (<(u('2))over bar>(+)), on the other hand, varies significantly with Reynolds number. The inner peak in (u('2)) over bar (+) is observed to grow with Reynolds number. Growth in (u('2)) over bar (+) farther from the wall is documented over the entire range of Reynolds number giving rise to a plateau in the streamwise Reynolds normal stress in the overlap region of the profile for Re-tau <= 6000. The wall-normal Reynolds normal stress ((v('2)) over bar (+)) displays no Reynolds-number dependence near the wall. Some increase in (v('2)) over bar (+) in the outer layer is noted for Re-tau <= 4000. The trends in the present Reynolds stress results agree qualitatively with recent experimental results from pipe and boundary layer flows. [http://dx.doi.org/10.1063/1.4791606]
C1 [Schultz, M. P.] USN Acad, Dept Naval Architecture & Ocean Engn, Annapolis, MD 21402 USA.
[Flack, K. A.] USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
RP Schultz, MP (reprint author), USN Acad, Dept Naval Architecture & Ocean Engn, Annapolis, MD 21402 USA.
RI Schultz, Michael/C-3670-2008
FU Office of Naval Research
FX The authors would like to thank the Office of Naval Research for
financial support of this research. A debt of gratitude is owed Bill
Beaver of the USNA Hydromechanics Lab for his help with the design of
the experimental facility. Thanks are due to Dale Bower, Tim Snipes, and
Brandon Stanley of the USNA Project Support Branch for machining and
constructing the experimental facility. Many thanks also go to Don
Bunker and Dan Rhodes of the USNA Hydromechanics Lab for assisting with
the experimental setup and data collection. The authors are also very
grateful to Professor Henrik Alfredsson, Professor Javier Jimenez, and
Dr. Jason Monty for thoughtful discussions and for providing data that
have served to improve the present work.
NR 30
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U1 3
U2 38
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
J9 PHYS FLUIDS
JI Phys. Fluids
PD FEB
PY 2013
VL 25
IS 2
AR 025104
DI 10.1063/1.4791606
PG 13
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA 117KI
UT WOS:000316951700031
ER
PT J
AU Wachtor, AJ
Grinstein, FF
DeVore, CR
Ristorcelli, JR
Margolin, LG
AF Wachtor, A. J.
Grinstein, F. F.
DeVore, C. R.
Ristorcelli, J. R.
Margolin, L. G.
TI Implicit large-eddy simulation of passive scalar mixing in statistically
stationary isotropic turbulence
SO PHYSICS OF FLUIDS
LA English
DT Article
ID HIGH-REYNOLDS-NUMBER; HOMOGENEOUS TURBULENCE; FLOWS; FLUX; TRANSPORT;
GRADIENT; SCHEMES; JETS
AB Turbulent mixing of a passive scalar by forced isotropic turbulence with a prescribed mean scalar gradient is studied in the context of implicit large-eddy simulation. The simulation strategy uses a multi-dimensional compressible flux-corrected transport algorithm, with low wavenumber momentum forcing imposed separately for the solenoidal and dilatational velocity components. Effects of grid resolution on the flow and scalar mixing are investigated at turbulent Mach numbers 0.13 and 0.27. Turbulence metrics are used to show that an implicit large-eddy simulation can accurately capture the mixing transition and asymptotic self-similar behaviors predicted by previous theoretical, laboratory, and direct numerical simulation studies, including asymptotically constant scalar variance and increasing velocity-to-scalar Taylor micro-scales ratio as function of effective Reynolds number determined by grid resolution. The results demonstrate the feasibility of predictive under-resolved simulations of high Reynolds number turbulent scalar mixing using implicit large-eddy simulation. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4783924]
C1 [Wachtor, A. J.; Grinstein, F. F.; Ristorcelli, J. R.; Margolin, L. G.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[DeVore, C. R.] USN, Res Lab, Washington, DC 20375 USA.
RP Wachtor, AJ (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI DeVore, C/A-6067-2015;
OI DeVore, C/0000-0002-4668-591X; Wachtor, Adam/0000-0003-0609-9171
FU U.S. Department of Energy NNSA [DE-AC52-06NA25396]; LANL LDRD-ER
[20100441ER]
FX The authors thank Daniel Livescu for stimulating discussions and for
sharing detailed information on his compressible turbulence forcing
strategy. Los Alamos National Laboratory (LANL) is operated by the Los
Alamos National Security, LLC for the U.S. Department of Energy NNSA
under Contract No. DE-AC52-06NA25396. This work was made possible by
funding from the LANL LDRD-ER on "LES Modeling for Predictive
Simulations of Material Mixing," through exploratory research Project
No. 20100441ER.
NR 50
TC 14
Z9 14
U1 0
U2 9
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
J9 PHYS FLUIDS
JI Phys. Fluids
PD FEB
PY 2013
VL 25
IS 2
AR 025101
DI 10.1063/1.4783924
PG 19
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA 117KI
UT WOS:000316951700028
ER
PT J
AU Apruzese, JP
Giuliani, JL
Thornhill, JW
Coverdale, CA
Jones, B
Ampleford, DJ
AF Apruzese, J. P.
Giuliani, J. L.
Thornhill, J. W.
Coverdale, C. A.
Jones, B.
Ampleford, D. J.
TI Analysis of spatially resolved Z-pinch spectra to investigate the nature
of "bright spots"
SO PHYSICS OF PLASMAS
LA English
DT Article
ID K-SHELL RADIATION; X-RAY SPECTROSCOPY; WIRE ARRAYS; ATOMIC-NUMBER;
HOT-SPOTS; PLASMAS; PHYSICS; ARGON; LINE; MA
AB Localized, intensely radiating regions are often observed in Z pinches. High resolution images of such areas have been recorded at least as far back as the 1970s. However, there is as yet no widely accepted consensus on the nature of these "bright spots" or how they are formed. This phenomenon has also been referred to "hot spots" or "micropinches." To shed further light on this issue, we have analyzed axially resolved K-shell spectra from 4 Z pinches driven by the refurbished Z generator ("ZR") at Sandia National Laboratories, and the previous version of the Z machine ("Z"). The atomic numbers of the loads varied from 13 to 29. We find that higher spatial K-shell intensity in the Al pinch correlates with density. The K-shell intensity within a copper shot taken on ZR correlates strongly with increased electron temperature, but another, somewhat less well-diagnosed copper shot from Z shows correlation with density. The bright spots in a Ti pinch correlate with neither density nor temperature, but do correlate with the product of density and diameter (proportional to opacity). This opacity correlation is also observed in the other 3 pinches. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4792256]
C1 [Apruzese, J. P.; Giuliani, J. L.; Thornhill, J. W.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Coverdale, C. A.; Jones, B.; Ampleford, D. J.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Apruzese, JP (reprint author), NRL Engil Corp, Chantilly, VA 20151 USA.
FU U. S. Department of Energy, National Nuclear Security Administration
[DE-AC04-94AL85000]; Sandia National Laboratories
FX This work was supported by the U. S. Department of Energy, National
Nuclear Security Administration, and by Sandia National Laboratories.
Sandia National Laboratories is a multi-program laboratory managed and
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the U. S. Department of Energy's National
Nuclear Security Administration, under contract DE-AC04-94AL85000.
NR 40
TC 10
Z9 10
U1 0
U2 20
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
J9 PHYS PLASMAS
JI Phys. Plasmas
PD FEB
PY 2013
VL 20
IS 2
AR 022707
DI 10.1063/1.4792256
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA 122BK
UT WOS:000317289800046
ER
PT J
AU Weaver, JL
Oh, J
Phillips, L
Afeyan, B
Seely, J
Kehne, D
Brown, CM
Obenschain, SP
Serlin, V
Schmitt, AJ
Feldman, U
Lehmberg, RH
Mclean, E
Manka, C
AF Weaver, J. L.
Oh, J.
Phillips, L.
Afeyan, B.
Seely, J.
Kehne, D.
Brown, C. M.
Obenschain, S. P.
Serlin, V.
Schmitt, A. J.
Feldman, U.
Lehmberg, R. H.
Mclean, E.
Manka, C.
TI Observation of parametric instabilities in the quarter critical density
region driven by the Nike KrF laser
SO PHYSICS OF PLASMAS
LA English
DT Article
ID INDUCED SPATIAL INCOHERENCE; INHOMOGENEOUS PLASMAS; VARIATIONAL
APPROACH; RAMAN-SCATTERING; 2-PLASMON DECAY; FUSION; FREQUENCY;
EMISSION; FACILITY; PERFORMANCE
AB The krypton-fluoride (KrF) laser is an attractive choice for inertial confinement fusion due to its combination of short wavelength (lambda = 248 nm), large bandwidth (up to 3 THz), and superior beam smoothing by induced spatial incoherence. These qualities improve the overall hydrodynamics of directly driven pellet implosions and should allow use of increased laser intensity due to higher thresholds for laser plasma instabilities when compared to frequency tripled Nd:glass lasers (lambda = 351 nm). Here, we report the first observations of the two-plasmon decay instability using a KrF laser. The experiments utilized the Nike laser facility to irradiate solid plastic planar targets over a range of pulse lengths (0.35 ns <= tau <= 1.25 ns) and intensities (up to 2 x 10(15) W/cm(2)). Variation of the laser pulse created different combinations of electron temperature and electron density scale length. The observed onset of instability growth was consistent with the expected scaling that KrF lasers have a higher intensity threshold for instabilities in the quarter critical density region. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789379]
C1 [Weaver, J. L.; Kehne, D.; Brown, C. M.; Obenschain, S. P.; Serlin, V.; Schmitt, A. J.] USN, Res Lab, Washington, DC 20375 USA.
[Oh, J.; Lehmberg, R. H.; Mclean, E.; Manka, C.] Res Support Instruments, Lanham, MD 20905 USA.
[Phillips, L.] Alogus Res Corp, Mclean, VA 22101 USA.
[Afeyan, B.] Polymath Res Inc, Pleasanton, CA 94566 USA.
[Seely, J.; Feldman, U.] Berkeley Res Associates Inc, Beltsville, MD 20705 USA.
RP Weaver, JL (reprint author), USN, Res Lab, Washington, DC 20375 USA.
FU DoE/NNSA
FX Work supported by DoE/NNSA. The authors would also like to thank Glenn
Holland of NIST for help with diagnostic development and Dr. F. Young of
NRL for discussions regarding hard x-ray diagnostics.
NR 31
TC 2
Z9 2
U1 1
U2 8
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 FEB
PY 2013
VL 20
IS 2
AR 022701
DI 10.1063/1.4789379
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA 122BK
UT WOS:000317289800040
ER
PT J
AU Garfinkel, SL
AF Garfinkel, Simson L.
TI Digital media triage with bulk data analysis and bulk_extractor
SO COMPUTERS & SECURITY
LA English
DT Article
DE Digital forensics; Bulk data analysis; bulk_extractor; Optimistic
decompression; Windows hibernation files; EnCase; Forensic path; Margin;
Parallelized forensic analysis; Stream-based forensics
ID FORENSICS; XML
AB Bulk data analysis eschews file extraction and analysis, common in forensic practice today, and instead processes data in "bulk," recognizing and extracting salient details ("features") of use in the typical digital forensics investigation. This article presents the requirements, design and implementation of the bulk_extractor, a high-performance carving and feature extraction tool that uses bulk data analysis to allow the triage and rapid exploitation of digital media. Bulk data analysis and the bulk_extractor are designed to complement traditional forensic approaches, not replace them. The approach and implementation offer several important advances over today's forensic tools, including optimistic decompression of compressed data, context-based stop-lists, and the use of a "forensic path" to document both the physical location and forensic transformations necessary to reconstruct extracted evidence. The bulk_extractor is a stream-based forensic tool, meaning that it scans the entire media from beginning to end without seeking the disk head, and is fully parallelized, allowing it to work at the maximum I/O capabilities of the underlying hardware (provided that the system has sufficient CPU resources). Although bulk_extractor was developed as a research prototype, it has proved useful in actual police investigations, two of which this article recounts. Published by Elsevier Ltd.
C1 Naval Postgrad Sch, Arlington, VA 22207 USA.
RP Garfinkel, SL (reprint author), Naval Postgrad Sch, 900N Glebe, Arlington, VA 22207 USA.
EM slgarfin@nps.edu
FU NSF [DUE-0919593]; Department of Defense
FX The author gratefully acknowledges the participation of John Lehr at the
San Luis Obispo Police Department for his use of early bulk_extractor
prototypes and his permission to print here the stories regarding the
use of bulk_extractor in actual cases. Rob Beverly, Beth Rosenberg and
others reviewed earlier versions of this paper and provided useful
feedback. Anonymous reviewers provided additional information and
criticism that was quite thought-provoking and useful in refining this
article. This work was supported by NSF Award DUE-0919593 and the
Department of Defense. The views expressed in this document are those of
the author and do not represent those of the Department of Defense or
the US Government.
NR 52
TC 18
Z9 18
U1 0
U2 14
PU ELSEVIER ADVANCED TECHNOLOGY
PI OXFORD
PA OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON,
OXFORD OX5 1GB, OXON, ENGLAND
SN 0167-4048
EI 1872-6208
J9 COMPUT SECUR
JI Comput. Secur.
PD FEB
PY 2013
VL 32
BP 56
EP 72
DI 10.1016/j.cose.2012.09.011
PG 17
WC Computer Science, Information Systems
SC Computer Science
GA 101FD
UT WOS:000315759700005
ER
PT J
AU Chiodi, F
Witt, JDS
Smits, RGJ
Qu, L
Halasz, GB
Wu, CT
Valls, OT
Halterman, K
Robinson, JWA
Blamire, MG
AF Chiodi, F.
Witt, J. D. S.
Smits, R. G. J.
Qu, L.
Halasz, Gabor B.
Wu, C-T
Valls, O. T.
Halterman, K.
Robinson, J. W. A.
Blamire, M. G.
TI Supra-oscillatory critical temperature dependence of Nb-Ho bilayers
SO EPL
LA English
DT Article
ID FERROMAGNET; SUPERCURRENT; MULTILAYERS
AB We investigate the critical temperature T-c of a thin s-wave superconductor (Nb) proximity coupled to a helical rare-earth ferromagnet (Ho). As a function of the Ho layer thickness, we observe multiple oscillations of T-c superimposed on a slow decay, that we attribute to the influence of the Ho on the Nb proximity effect. Because of the inhomogeneous magnetization in Ho, singlet and triplet pair correlations are present in the bilayers. We take both into consideration when solving the self-consistent Bogoliubov-de Gennes equations, and we find a reasonable agreement with the experiments. We also observe non-trivial transitions into the superconducting state, the zero resistance state being attained after two successive transitions which appear to be associated with the magnetic structure of Ho. Copyright (c) EPLA, 2013
C1 [Chiodi, F.; Smits, R. G. J.; Qu, L.; Halasz, Gabor B.; Robinson, J. W. A.; Blamire, M. G.] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England.
[Chiodi, F.] Univ Paris 11, Inst Elect Fondamentale, CNRS, F-91405 Orsay, France.
[Witt, J. D. S.] Univ Leeds, Sch Phys & Astron, EC Stoner Lab, Leeds LS2 9JT, W Yorkshire, England.
[Wu, C-T; Valls, O. T.] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
[Halterman, K.] USN, Michelson Lab, Div Phys, Air Warfare Ctr, China Lake, CA 93555 USA.
[Valls, O. T.] Univ Minnesota, Minnesota Supercomp Inst, Minneapolis, MN 55455 USA.
RP Chiodi, F (reprint author), Univ Cambridge, Dept Mat Sci & Met, Pembroke St, Cambridge CB2 3QZ, England.
EM francesca.chiodi@u-psud.fr; jjr33@cam.ac.uk
FU UK EPSRC; Royal Society through a University research Fellowship; IARPA
grant [N66001-12-1-2023]
FX This work was funded by the UK EPSRC and the Royal Society through a
University research Fellowship. OTV and CTW thank IARPA grant
N66001-12-1-2023 for partial support.
NR 31
TC 13
Z9 13
U1 0
U2 16
PU EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
PI MULHOUSE
PA 6 RUE DES FRERES LUMIERE, MULHOUSE, 68200, FRANCE
SN 0295-5075
J9 EPL-EUROPHYS LETT
JI EPL
PD FEB
PY 2013
VL 101
IS 3
AR 37002
DI 10.1209/0295-5075/101/37002
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 096KH
UT WOS:000315402200023
ER
PT J
AU Joo, YH
Cho, SG
Goh, EM
Parrish, DA
Shreeve, JM
AF Joo, Young-Hyuk
Cho, Soo Gyeong
Goh, Eun Mee
Parrish, Damon A.
Shreeve, Jean'ne M.
TI Synthesis of Aminotetrazolyl Esters from Cyanogen Azide with Amino
Esters
SO EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
LA English
DT Article
DE Synthetic methods; Nitrogen heterocycles; Azides; Amines
ID COORDINATION POLYMERS; CONJUGATE ADDITION; TETRAZOLE CATALYST; ACID;
CHEMISTRY; ORGANOCATALYST; INHIBITORS; LIGANDS; ANALOGS; ENONES
AB Several alpha-amino esters (and their hydrochloride salts) were treated with cyanogen azide at ambient temperature in a mixture of water and acetonitrile to form chiral 5-aminotetrazole derivatives in good yields (47-69%). The cyanogen azide was prepared from cyanogen bromide and sodium azide. Other functionalized alpha-amino esters (cysteine, arginine, histidine, and serine) were formed in only trace amounts and were difficult to purify by column chromatography. All 5-aminotetrazoles (i.e., 1-8) were characterized by IR spectroscopy, H-1, C-13, and N-15 NMR spectroscopy, and elemental analysis. The structures of 3-7 were obtained by single-crystal X-ray structure analysis.
C1 [Joo, Young-Hyuk] Hanwha Corp, Def R&D Ctr, Dept Energet Mat & Pyrotech, Taejon 305156, South Korea.
[Cho, Soo Gyeong; Goh, Eun Mee] Agcy Def Dev, Def Adv R&D Ctr, Taejon 305600, South Korea.
[Parrish, Damon A.] USN, Res Lab, Washington, DC 20375 USA.
[Shreeve, Jean'ne M.] Univ Idaho, Dept Chem, Moscow, ID 83844 USA.
RP Shreeve, JM (reprint author), Univ Idaho, Dept Chem, Moscow, ID 83844 USA.
EM joo2011@hanwha.co.kr; jshreeve@uidaho.edu
FU Office of Naval Research [N00014-10-0097]; Agency for Defense
Development (Korea)
FX The authors gratefully acknowledge the support of the Office of Naval
Research, Dr. Clifford Bedford (grant number N00014-10-0097) and the
Agency for Defense Development (Korea).
NR 37
TC 1
Z9 1
U1 0
U2 33
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1434-193X
J9 EUR J ORG CHEM
JI Eur. J. Org. Chem.
PD FEB
PY 2013
IS 4
BP 688
EP 692
DI 10.1002/ejoc.201201153
PG 5
WC Chemistry, Organic
SC Chemistry
GA 107CT
UT WOS:000316193000008
ER
PT J
AU Meylemans, HA
Baldwin, LC
Harvey, BG
AF Meylemans, Heather A.
Baldwin, Lawrence C.
Harvey, Benjamin G.
TI Low-Temperature Properties of Renewable High-Density Fuel Blends
SO ENERGY & FUELS
LA English
DT Article
ID JET FUEL; HYDROCARBON FUELS; THERMAL-ANALYSIS; DIESEL FUELS; OILS;
BIODIESEL
AB The low-temperature properties of high-density terpene dimer fuels and fuel mixtures with JP-8, JP-10, and hydrogenated pinene have been studied by shear viscometry and thermomechanical analysis (TMA). Neat terpene dimers have a viscosity of 3.94 X 10(3) mPa.s at -10 degrees C, while 50:50 mixtures with JP-10, RJ-4, pinane, and JP-8 have viscosities 2-3 orders of magnitude lower at 23.9, 53.0, 24.9, and 3.7 mPa.s, respectively. Linear and branched alkanes in JP-8 disrupt glass formation of the dimers, explaining the significant difference between the viscosity afforded by bicyclic diluents and JP-8. To complement the viscosity data, TMA was used to observe low-temperature transitions (T-m and T-g) of the blended fuels. Mixtures of the terpene chillers with cyclic molecules show only glass transition temperatures with no observable melting points, while mixtures with JP-8 and decane show T-g values that transition to melting points at high concentrations of terpene dimers. The results suggest that blending conventional fuels with terpene dimers is an effective strategy for mitigating the high viscosity of the C20 molecules. In addition, blending these renewable fuels with conventional jet fuel (JP-8) imparts both a higher density as well as an improved volumetric net heat of combustion while maintaining an acceptable low-temperature viscosity when compared to JP-8 alone.
C1 [Meylemans, Heather A.; Baldwin, Lawrence C.; Harvey, Benjamin G.] USN, Naval Air Syst Command NAVAIR, Naval Air Warfare Ctr, Div Chem,Res Dept,Weap Div NAWCWD, China Lake, CA 93555 USA.
RP Meylemans, HA (reprint author), USN, Naval Air Syst Command NAVAIR, Naval Air Warfare Ctr, Div Chem,Res Dept,Weap Div NAWCWD, China Lake, CA 93555 USA.
EM heather.meylemans@navy.mil; benjamin.g.harvey@navy.mil
FU Office of Naval Research [N0001411WX20949]
FX The authors gratefully acknowledge support from the Office of Naval
Research (Award N0001411WX20949). The authors thank Roxanne Quintana for
GC-MS analysis and Shannon Haines for synthesizing the pinane.
NR 22
TC 27
Z9 27
U1 5
U2 48
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
J9 ENERG FUEL
JI Energy Fuels
PD FEB
PY 2013
VL 27
IS 2
BP 883
EP 888
DI 10.1021/ef301608z
PG 6
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 096VD
UT WOS:000315431900033
ER
PT J
AU Prak, DJL
Cowart, JS
Hamilton, LJ
Hoang, DT
Brown, EK
Trulove, PC
AF Prak, Dianne J. Luning
Cowart, Jim S.
Hamilton, Leonard J.
Hoang, David T.
Brown, Eva K.
Trulove, Paul C.
TI Development of a Surrogate Mixture for Algal-Based Hydrotreated
Renewable Diesel
SO ENERGY & FUELS
LA English
DT Article
ID THERMOPHYSICAL PROPERTIES; PHYSICOCHEMICAL AUTHENTICITY;
SURFACE-TENSION; FUEL; KEROSENE
AB In this study, the chemical composition and physical properties of an algal-based hydrotreated renewable diesel (HRD) fuel were used to develop a surrogate mixture containing commercially available hydrocarbons. Analysis of the chemical composition of the algal HRD showed a small quantity of low-molecular-weight components and a high quantity of four high-molecular-weight components: n-pentadecane, n-hexadecane, n-heptadecane, and n-octadecane. Using these four components, a fifth branched component was added to match the physical properties of the algal HRD. Candidates for the fifth component were 2-methyloctane, 2-methylnonane, isooctane, and isododecane. The isooctane- and isododecane-based surrogates were tested in a Yanmar engine along with algal HRD and petroleum F76 diesel to assess the start of ignition, start of combustion, ignition delay, maximum rate of heat release, and overall combustion duration. The surrogate that best matches the physical properties of the flash point, density, viscosity, and surface tension as well as most closely reflecting the combustion metrics is one containing isododecane, n-pentadecane, n-hexadecane, n-heptadecane, and n-octadecane.
C1 [Prak, Dianne J. Luning; Hoang, David T.; Brown, Eva K.; Trulove, Paul C.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
[Cowart, Jim S.; Hamilton, Leonard J.] USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
RP Prak, DJL (reprint author), USN Acad, Dept Chem, Annapolis, MD 21402 USA.
EM prak@usna.edu
OI Luning Prak, Dianne/0000-0002-5589-7287
FU Office of Naval Research
FX The authors thank the Office of Naval Research for funding this project.
NR 33
TC 20
Z9 20
U1 0
U2 16
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
J9 ENERG FUEL
JI Energy Fuels
PD FEB
PY 2013
VL 27
IS 2
BP 954
EP 961
DI 10.1021/ef301879g
PG 8
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 096VD
UT WOS:000315431900040
ER
PT J
AU Fujiwara, K
Allison, RD
Wang, RY
Bare, P
Matsuura, K
Schechterly, C
Murthy, K
Marincola, FM
Alter, HJ
AF Fujiwara, Kei
Allison, Robert D.
Wang, Richard Y.
Bare, Patricia
Matsuura, Kentaro
Schechterly, Cathy
Murthy, Krishna
Marincola, Francesco M.
Alter, Harvey J.
TI Investigation of Residual Hepatitis C Virus in Presumed Recovered
Subjects
SO HEPATOLOGY
LA English
DT Article
ID SUSTAINED VIROLOGICAL RESPONSE; BLOOD MONONUCLEAR-CELLS; HCV-INFECTED
PATIENTS; PERIPHERAL-BLOOD; ANTIVIRAL THERAPY; REPLICATION; PERSISTENCE;
DONORS; RNA; REEMERGENCE
AB Recent studies have found hepatitis C virus (HCV) RNA in peripheral blood mononuclear cells (PBMCs) of the majority of presumed recovered subjects. We investigated this unexpected finding using samples from patients whose HCV RNA and anti-HCV status had been serially confirmed. HCV RNA was detected in PBMCs from 66 of 67 chronic HCV carriers. Subpopulation analysis revealed that the viral load (log copies/10(6) cells) in B cells (4.14 +/- 0.71) was higher than in total PBMCs (3.62 +/- 0.71; P < 0.05), T cells (1.67 +/- 0.88; P < 0.05), and non-B/T cells (2.48 +/- 1.15; P < 0.05). HCV negative-strand RNA was not detected in PBMCs from any of 25 chronically infected patients. No residual viral RNA was detected in total PBMCs or plasma of 59 presumed recovered subjects (11 spontaneous and 48 treatment induced) using nested real-time polymerase chain reaction with a detection limit of 2 copies/mu g RNA (from similar to 1 x 10(6) cells). PBMCs from 2 healthy HCV-negative blood donors became HCV RNA positive, with B-cell predominance, when mixed in vitro with HCV RNA-positive plasma, thus passively mimicking cells from chronic HCV carriers. No residual HCV was detected in liver or other tissues from 2 spontaneously recovered chimpanzees. Conclusion: (1) HCV RNA was detected in PBMCs of most chronic HCV carriers and was predominant in the B-cell subpopulation; (2) HCV detected in PBMCs was in a nonreplicative form; (3) HCV passively adsorbed to PBMCs of healthy controls in vitro, becoming indistinguishable from PBMCs of chronic HCV carriers; and (4) residual HCV was not detected in plasma or PBMCs of any spontaneous or treatment-recovered subjects or in chimpanzee liver, suggesting that the classic pattern of recovery from HCV infection is generally equivalent to viral eradication. (HEPATOLOGY 2013;57:483-491)
C1 [Fujiwara, Kei; Allison, Robert D.; Wang, Richard Y.; Bare, Patricia; Schechterly, Cathy; Marincola, Francesco M.; Alter, Harvey J.] NIH, Dept Transfus Med, Ctr Clin, Bethesda, MD 20892 USA.
[Matsuura, Kentaro] Nagoya City Univ, Dept Gastroenterol & Metab, Nagoya, Aichi, Japan.
[Murthy, Krishna] Texas Biomed Res Inst, San Antonio, TX USA.
[Fujiwara, Kei] Nagoya Daini Red Cross Hosp, Dept Gastroenterol & Hepatol, Nagoya, Aichi, Japan.
[Allison, Robert D.] USN, San Diego, CA 92152 USA.
[Bare, Patricia] Acad Nacl Med Buenos Aires, Inst Invest Hematol, Buenos Aires, DF, Argentina.
RP Alter, HJ (reprint author), NIH, Dept Transfus Med, Bldg 10,Room 1C-711,10 Ctr Dr, Bethesda, MD 20892 USA.
EM HAlter@cc.nih.gov
OI Allison, Robert/0000-0001-8458-5250
FU Intramural Research Program of the Warren G. Magnuson Clinical Center,
National Institutes of Health; Hepatitis Virus Research Foundation of
Japan
FX This research was supported by the Intramural Research Program of the
Warren G. Magnuson Clinical Center, National Institutes of Health. K.F.
was supported by the Hepatitis Virus Research Foundation of Japan
NR 33
TC 20
Z9 20
U1 0
U2 4
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0270-9139
J9 HEPATOLOGY
JI Hepatology
PD FEB
PY 2013
VL 57
IS 2
BP 483
EP 491
DI 10.1002/hep.25921
PG 9
WC Gastroenterology & Hepatology
SC Gastroenterology & Hepatology
GA 099TA
UT WOS:000315643400009
PM 22729600
ER
PT J
AU Masterson, DM
AF Masterson, Daniel M.
TI Japanese and Nikkei at Home and Abroad: Negotiating Identities in a
Global World
SO JOURNAL OF ETHNIC AND MIGRATION STUDIES
LA English
DT Book Review
C1 [Masterson, Daniel M.] USN Acad, Annapolis, MD 21402 USA.
RP Masterson, DM (reprint author), USN Acad, Annapolis, MD 21402 USA.
EM masterso@usna.edu
NR 1
TC 0
Z9 0
U1 0
U2 1
PU ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXFORDSHIRE, ENGLAND
SN 1369-183X
J9 J ETHN MIGR STUD
JI J. Ethn. Migr. Stud.
PD FEB 1
PY 2013
VL 39
IS 2
SI SI
BP 331
EP 332
DI 10.1080/1369183X.2012.740973
PG 2
WC Demography; Ethnic Studies
SC Demography; Ethnic Studies
GA 100QY
UT WOS:000315717500011
ER
PT J
AU El-Gendy, AM
Mansour, A
Shaheen, HI
Monteville, MR
Armstrong, AW
El-Sayed, N
Young, SYN
Klena, JD
AF El-Gendy, Atef M.
Mansour, Adel
Shaheen, Hind I.
Monteville, Marshall R.
Armstrong, Adam W.
El-Sayed, Nasr
Young, Sylvia Y. N.
Klena, John D.
TI Genotypic characterization of Egypt enterotoxigenic Escherichia coli
isolates expressing coli surface antigen 6
SO JOURNAL OF INFECTION IN DEVELOPING COUNTRIES
LA English
DT Article
DE Enterotoxigenic Escherichia coli; children; diarrhea; Egypt
ID FIELD GEL-ELECTROPHORESIS; COLONIZATION FACTOR CS6;
ANTIBIOTIC-RESISTANCE; TRAVELERS DIARRHEA; MOLECULAR EPIDEMIOLOGY;
GENETIC DIVERSITY; VIRULENCE FACTORS; STRAINS; CHILDREN; ETEC
AB Introduction: One approach to control enterotoxigenic Escherichia coli (ETEC) infections has been to develop vaccines focused on inducing protective immunity against surface expressed antigenic factors. One such factor is coli surface antigen 6 (CS6); ETEC isolates expressing CS6 may also simultaneously co-express surface antigens CS4 or CS5. However, there is little information regarding the inter-relationships of isolates expressing the CS6 antigen alone or in combination with CS4 or CS5.
Methodology: A total of 62 CS6-associated ETEC isolates were evaluated for their antimicrobial susceptibility, mechanisms of resistance, toxin genes, colonization factor expression, and XbaI-pulsed-field gel electrophoretic profiles.
Results: We observed 46 XbaI profiles; 31 were exclusive to ETEC expressing CS6 alone and 15 among the ETEC co-expressing CS4 or CS5. Nearly half (47%) of these isolates were resistant to ampicillin, a third (37%) of the isolates were resistant to trimethoprim-sulfamethoxazole, and 24% of the isolates were tetracycline-resistant. A bla(TEM) gene was detected in 24 (83%) ampicillin-resistant isolates. Trimethoprim-sulfamethoxazole-resistant isolates (n = 23) carried either sulI (n = 1, 4%), sulII (n = 8, 35%) or both genes (n = 10, 43%); 4 had no detectable sul gene.
Conclusion: Our results show a lack of clonality among Egypt CS6 E. coli isolates and supports the use and the further research on vaccines targeting this cell surface antigen.
C1 [El-Gendy, Atef M.; Mansour, Adel; Shaheen, Hind I.; Monteville, Marshall R.; Armstrong, Adam W.; Young, Sylvia Y. N.; Klena, John D.] US Naval Med Res Unit 3, Clin Trials & Mil Studies Program, Cairo, Egypt.
[El-Sayed, Nasr] Egyptian Minist Hlth, Cairo, Egypt.
[Monteville, Marshall R.; Young, Sylvia Y. N.] USN, Environm & Prevent Med Unit 6, Honolulu, HI USA.
[Armstrong, Adam W.] USN, Natl Naval Med Ctr, Cent HIV Program, Bethesda, MD 20084 USA.
RP Klena, JD (reprint author), Unit 7300, Box 060, Dpo, AP 96521 USA.
EM irc4@cn.cdc.gov
FU Naval Medical Research Command [M00101.HIX.3421, M00101.PIX.3270];
National Institute of Child Health and Human Development
[Y1-HD-0026-01]; World Health Organization Global Program for Vaccines
and Immunization; World Health Organization Control of Diarrheal
Diseases Program
FX The opinions and assertions herein are the private views of the authors
and should not be construed as official or as reflecting the views of
the United States Department of the Navy, US Department of Defense, nor
the US Government. Financial support for the study was provided by the
Naval Medical Research Command (Work Unit no. M00101.HIX.3421 and
M00101.PIX.3270), the National Institute of Child Health and Human
Development (Interagency Agreement Y1-HD-0026-01), the World Health
Organization Global Program for Vaccines and Immunization, and the World
Health Organization Control of Diarrheal Diseases Program. The study
from which the bacterial strains characterized herein were derived (DOD
# 30967) was performed in strict conformity with all ethical guidelines
of the U.S. government. Informed consent was obtained from a parent of
each subject before screening; this consent included phenotypic and
genetic characterization of the ETEC isolates.
NR 60
TC 1
Z9 1
U1 0
U2 3
PU J INFECTION DEVELOPING COUNTRIES
PI TRAMANIGLIO
PA JIDC CENT OFF PORTO CONTE RICERCHE RES CTR, S P 55, PORTO CONTE CAPO
CACCIA KM 8.400 LOC, TRAMANIGLIO, 07041, ITALY
SN 1972-2680
J9 J INFECT DEV COUNTR
JI J. Infect. Dev. Ctries.
PD FEB
PY 2013
VL 7
IS 2
BP 90
EP 100
PG 11
WC Infectious Diseases
SC Infectious Diseases
GA 092JU
UT WOS:000315117600004
PM 23416654
ER
PT J
AU Sanghera, J
Kim, W
Villalobos, G
Shaw, B
Baker, C
Frantz, J
Sadowski, B
Aggarwal, I
AF Sanghera, Jasbinder
Kim, Woohong
Villalobos, Guillermo
Shaw, Brandon
Baker, Colin
Frantz, Jesse
Sadowski, Bryan
Aggarwal, Ishwar
TI Ceramic laser materials: Past and present
SO OPTICAL MATERIALS
LA English
DT Article; Proceedings Paper
CT 7th Laser Ceramics Symposium (LCS)
CY NOV 14-17, 2011
CL Nanyang Technol Univ, Singapore, SINGAPORE
HO Nanyang Technol Univ
DE Ceramics; Laser materials; Solid state lasers; Sesquioxides; Non-oxide
ceramics
ID SOLID-STATE LASERS; PERFORMANCE; GENERATION; EFFICIENCY; CRYSTALS
AB Recently, 100 KW output power from YAG ceramic laser system has been demonstrated. It is a remarkable achievement considering that only a few milli-watt power was observed from the ceramic laser materials when first reported in the 1960s. This great improvement is mainly due to the success in high purity powder synthesis, development in new sintering technology and novel ideas in optics and device design. Additional developments have included highly doped microchip lasers, ultrashort pulse lasers, novel materials such as sesquioxides, fluoride ceramic lasers, selenide ceramic lasers in the 2-3 mu m region, composite ceramic lasers for better thermal management, and single crystal lasers derived from polycrystalline ceramics. In this paper, we highlight some of these notable milestones and achievements and forecast the future in polycrystalline ceramic laser materials. Published by Elsevier B.V.
C1 [Sanghera, Jasbinder; Kim, Woohong; Villalobos, Guillermo; Shaw, Brandon; Baker, Colin; Frantz, Jesse] USN, Res Lab, Washington, DC 20375 USA.
[Sadowski, Bryan; Aggarwal, Ishwar] Sotera Def Solut, Crofton, MD 21114 USA.
RP Sanghera, J (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM jas.sanghera@nrl.navy.mil; rick.kim@nrl.navy.mil
RI Baker, Colin/I-6657-2015
NR 26
TC 34
Z9 38
U1 8
U2 50
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0925-3467
EI 1873-1252
J9 OPT MATER
JI Opt. Mater.
PD FEB
PY 2013
VL 35
IS 4
SI SI
BP 693
EP 699
DI 10.1016/j.optmat.2012.04.021
PG 7
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA 096UY
UT WOS:000315431400002
ER
PT J
AU Ancona, MG
Snow, AW
Perkins, FK
Pate, B
Park, D
AF Ancona, M. G.
Snow, A. W.
Perkins, F. K.
Pate, B.
Park, D.
TI Analyte kinetics in a nanocluster-based chemiresistor: A case study
SO SENSORS AND ACTUATORS B-CHEMICAL
LA English
DT Article
DE Chemiresistor; Chemical kinetics; Gold nanoclusters; Amines; Diffusion
ID GOLD NANOPARTICLES; MOLECULAR-INTERACTIONS; CARBOXYLIC-ACIDS; SENSOR;
METAL; RESISTIVITY; ENSEMBLE; CLUSTER; SYSTEM; AMINES
AB Nanoparticulate metal-insulator-metal ensemble chemiresistors in which the Au nanoclusters are functionalized with mercaptohexanoic acid are investigated as sensors of amines, and especially of triethylamine to which they are found to be extraordinarily sensitive with a minimum detectable level of less than 500 ppt. The dependences of the response on dose, time, and temperature are studied in detail. Modeling indicates that the entire data set is well explained by the interaction of partitioning and diffusion processes, both of which are temperature dependent. Published by Elsevier B.V.
C1 [Ancona, M. G.; Snow, A. W.; Perkins, F. K.; Pate, B.; Park, D.] USN, Res Lab, Washington, DC 20375 USA.
RP Ancona, MG (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM ancona@estd.nrl.navy.mil
FU Office of Naval Research
FX The authors thank the Office of Naval Research for funding support.
NR 27
TC 5
Z9 5
U1 3
U2 29
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-4005
J9 SENSOR ACTUAT B-CHEM
JI Sens. Actuator B-Chem.
PD FEB
PY 2013
VL 177
BP 936
EP 946
DI 10.1016/j.snb.2012.11.105
PG 11
WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
SC Chemistry; Electrochemistry; Instruments & Instrumentation
GA 101BU
UT WOS:000315751000125
ER
PT J
AU Currie, M
Dianat, P
Persano, A
Martucci, MC
Quaranta, F
Cola, A
Nabet, B
AF Currie, Marc
Dianat, Pouya
Persano, Anna
Martucci, Maria Concetta
Quaranta, Fabio
Cola, Adriano
Nabet, Bahram
TI Performance Enhancement of a GaAs Detector with a Vertical Field and an
Embedded Thin Low-Temperature Grown Layer
SO SENSORS
LA English
DT Article
DE photodetector; photodiode; GaAs; low-temperature grown GaAs;
electro-optic sampling; ultrafast detector; heterojunction; Schottky
contact
ID SEMICONDUCTOR-METAL PHOTODETECTORS; MOLECULAR-BEAM EPITAXY
AB Low temperature growth of GaAs (LT-GaAs) near 200 degrees C results in a recombination lifetime of nearly 1 ps, compared with approximately 1 ns for regular temperature similar to 600 degrees C grown GaAs (RT-GaAs), making it suitable for ultra high speed detection applications. However, LT-GaAs detectors usually suffer from low responsivity due to low carrier mobility. Here we report electro-optic sampling time response measurements of a detector that employs an AlGaAs heterojunction, a thin layer of LT-GaAs, a channel of RT-GaAs, and a vertical electric field that together facilitate collection of optically generated electrons while suppressing collection of lower mobility holes. Consequently, these devices have detection efficiency near that of RT-GaAs yet provide pulse widths nearly an order of magnitude faster-similar to 6 ps for a cathode-anode separation of 1.3 mu m and similar to 12 ps for distances more than 3 mu m.
C1 [Currie, Marc] USN, Res Lab, Div Opt Sci, Washington, DC 20375 USA.
[Dianat, Pouya; Nabet, Bahram] Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USA.
[Persano, Anna; Martucci, Maria Concetta; Quaranta, Fabio; Cola, Adriano] IMM CNR, Unit Lecce, I-73100 Lecce, Italy.
RP Currie, M (reprint author), USN, Res Lab, Div Opt Sci, Washington, DC 20375 USA.
EM marc.currie@nrl.navy.mil; pouya.dianat@gmail.com;
anna.persano@le.imm.cnr.it; concetta.martucci@le.imm.cnr.it;
fabio.quaranta@le.imm.cnr.it; adriano.cola@le.imm.cnr.it;
bahram.nabet@drexel.edu
RI Dianat, Pouya/C-6471-2013; Cola, Adriano/G-2379-2010;
OI PERSANO, ANNA/0000-0002-4239-4074
FU NSF Award [ECCS-0702716]; Office of Naval Research; ASEE-ONR Summer
Faculty Research Fellowship
FX This work was partially supported by NSF Award No. ECCS-0702716, the
Office of Naval Research, and an ASEE-ONR Summer Faculty Research
Fellowship.
NR 14
TC 2
Z9 2
U1 0
U2 22
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 1424-8220
J9 SENSORS-BASEL
JI Sensors
PD FEB
PY 2013
VL 13
IS 2
BP 2475
EP 2483
DI 10.3390/s130202475
PG 9
WC Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
SC Chemistry; Electrochemistry; Instruments & Instrumentation
GA 096KS
UT WOS:000315403300063
PM 23429510
ER
PT J
AU Rostkier-Edelstein, D
Hacker, JP
AF Rostkier-Edelstein, Dorita
Hacker, Joshua P.
TI Impact of Flow Dependence, Column Covariance, and Forecast Model Type on
Surface-Observation Assimilation for Probabilistic PBL Profile Nowcasts
SO WEATHER AND FORECASTING
LA English
DT Article
ID BOUNDARY-LAYER; KALMAN FILTER; SENSITIVITY-ANALYSIS; FACTOR SEPARATION;
ENSEMBLE-FILTER; PART I; STATE; CONVECTION; IMPLEMENTATION; PREDICTIONS
AB A probabilistic verification and factor-separation analysis (FSA) elucidate skillful nowcasts of planetary boundary layer (PBL) temperature, moisture, and wind profiles with a single-column model (SCM) and ensemble filter (EF) assimilation of surface observations. Recently, an FSA showed the importance of surface assimilation versus advection and radiation on ensemble-mean skill. That work addressed the necessary complexity of the model and assimilation scheme for improving PBL nowcasts, relative to deterministic-mesoscale predictions. Here, probabilistic ensemble-based SCM forecasts are compared to a simple probabilistic postprocessing scheme termed climatological dressing (CD). CD adjusts a deterministic mesoscale forecast using surface-atmosphere 3D-climatological covariances, a 30-min persistence model, and surface-forecast errors. It also dresses the adjusted profile with an in-sample uncertainty distribution (obtained from archives) scaled by the 30-min forecast error. Superior deterministic skill from SCM/EF results during night when flow-dependent covariances are more accurate than climatological covariances. CD is deterministically more skillful for temperature and moisture profiles during daytime because SCM/PBL parameterization yields biased covariances. SCM/EF is most probabilistically skillful because (a) the EF covariances accommodate large seasonal variability, (b) the 30-min error persistence assumption fails during nighttime, and (c) vertical error covariance estimates from archived forecasts are generally poor estimates of actual error covariances. A probabilistic FSA of the SCM/EF shows the relative importance of surface assimilation, radiation parameterization, and advection during night. Results confirm surface assimilation as the most important factor. A factor can be deterministically beneficial and probabilistically detrimental, or vice versa, depending on its role in reducing mean error or improving sharpness. Assimilation results in notable probabilistic improvement for nowcasts of low-level jet structures.
C1 [Rostkier-Edelstein, Dorita] Israel Inst Biol Res, IL-74100 Ness Ziona, Israel.
[Hacker, Joshua P.] USN, Postgrad Sch, Monterey, CA USA.
RP Rostkier-Edelstein, D (reprint author), Israel Inst Biol Res, POB 19, IL-74100 Ness Ziona, Israel.
EM doritar@iibr.gov.il
FU U.S. Department of Energy, Office of Science, Office of Biological and
Environmental Research, Environmental Sciences Division
FX The authors are grateful to the developers of the NCAR Data Assimilation
Research Testbed (DART) for providing a useful platform for
experimentation. We acknowledge M. Pocernic and E. Gilleland for
guidance on the R packages ("verification" and "bootstrap";
http://www.r-project.org) that were used for our calculations. We
acknowledge T. Hopson and Z. Klausner for insightful discussions on the
bootstrap technique. Yehuda Alexander is thanked for fruitful
discussion. Data were obtained from the Atmospheric Radiation
Measurement (ARM) program sponsored by the U.S. Department of Energy,
Office of Science, Office of Biological and Environmental Research,
Environmental Sciences Division.
NR 42
TC 2
Z9 2
U1 2
U2 12
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0882-8156
J9 WEATHER FORECAST
JI Weather Forecast.
PD FEB
PY 2013
VL 28
IS 1
BP 29
EP 54
DI 10.1175/WAF-D-12-00043.1
PG 26
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098HT
UT WOS:000315540800002
ER
PT J
AU Metzger, E
Nuss, WA
AF Metzger, Eric
Nuss, Wendell A.
TI The Relationship between Total Cloud Lightning Behavior and
Radar-Derived Thunderstorm Structure
SO WEATHER AND FORECASTING
LA English
DT Article
ID SEVERE WEATHER; NORTH TEXAS; PART II; SUPERCELLS; SIGNATURES; INTENSITY;
TRENDS; ARRAY
AB Total lightning detection systems have been in development since the mid-1980s and deployed in several areas around the world. Previous studies on total lightning found intra- and intercloud lightning (IC) activity tends to fluctuate significantly during the lifetime of thunderstorms and have indicated that lightning jumps or rapid changes in lightning flash rates are closely linked to changes in the vertical integrated liquid (VIL) reading on the National Weather Service's Weather Surveillance Radar-1988 Doppler (WSR-88D) systems. This study examines the total lightning and its relationship to WSR-88D signatures used operationally to determine thunderstorm severity to highlight the potential benefit of a combined forecast approach. Lightning and thunderstorm data from the Dallas Fort Worth, Texas, and Tucson, Arizona, areas from 2006 to 2009, were used to relate total lightning behavior and radar interrogation techniques. The results indicate that lightning jumps can be classified into severe wind, hail, or mixed-type jumps based on the behavior of various radar-based parameters. In 25 of 34 hail-type jumps and in 18 of 20 wind-type jumps, a characteristic change in cloud-to-ground (CG) versus IC lightning flash rates occurred prior to the report of severe weather. For hail-type jumps, IC flash rates increased, while CG flash rates were steady or decreased. For wind-type jumps, CG flash rates increased, while IC flash rates either increased (12 of 18) or were steady or decreased (6 of 18). Although not every lightning jump resulted in a severe weather report, the characteristic behavior in flash rates adds information to radar-based approaches for nowcasting the severe weather type.
C1 [Metzger, Eric; Nuss, Wendell A.] USN, Dept Meteorol, Postgrad Sch, Monterey, CA 93943 USA.
RP Nuss, WA (reprint author), USN, Dept Meteorol, Postgrad Sch, Root Hall 254,Code MR Nu,589 Dyer Rd, Monterey, CA 93943 USA.
EM nuss@nps.edu
NR 28
TC 5
Z9 5
U1 0
U2 10
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0882-8156
J9 WEATHER FORECAST
JI Weather Forecast.
PD FEB
PY 2013
VL 28
IS 1
BP 237
EP 253
DI 10.1175/WAF-D-11-00157.1
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098HT
UT WOS:000315540800013
ER
PT J
AU Tyndall, DP
Horel, JD
AF Tyndall, Daniel P.
Horel, John D.
TI Impacts of Mesonet Observations on Meteorological Surface Analyses
SO WEATHER AND FORECASTING
LA English
DT Article
ID WESTERN UNITED-STATES; DATA ASSIMILATION; ANALYSIS SYSTEM; SINGULAR
VECTORS; REAL-TIME; SENSITIVITY; ADJOINT; INTERPOLATION; PREDICTION;
RADIOSONDE
AB Given the heterogeneous equipment, maintenance and reporting practices, and siting of surface observing stations, subjective decisions that depend on the application tend to be made to use some observations and to avoid others. This research determines objectively high-impact surface observations of 2-m temperature, 2-m dewpoint, and 10-m wind observations using the adjoint of a two-dimensional variational surface analysis over the contiguous United States. The analyses reflect a weighted blend of 1-h numerical forecasts used as background grids and available observations. High-impact observations are defined as arising from poor observation quality, observation representativeness errors, or accurate observed weather conditions not evident in the background field. The impact of nearly 20 000 surface observations is computed over a sample of 100 analysis hours during 25 major weather events. Observation impacts are determined for each station as well as within broad network categories. For individual analysis hours, high-impact observations are located in regions of significant weather-typically, where the background field fails to define the local weather conditions. Low-impact observations tend to be ones where there are many observations reporting similar departures from the background. When averaged over the entire 100 cases, observations with the highest impact are found within all network categories and depend strongly on their location relative to other observing sites and the amount of variability in the weather; for example, temperature observations have reduced impact in urban areas such as Los Angeles, California, where observations are plentiful and temperature departures from the background grids are small.
C1 [Tyndall, Daniel P.; Horel, John D.] Univ Utah, Dept Atmospher Sci, Salt Lake City, UT USA.
RP Tyndall, DP (reprint author), USN, Res Lab, 7 Grace Hopper Ave, Monterey, CA 93943 USA.
EM dan.tyndall.ctr@nrlmry.navy.mil
FU National Ocean and Atmospheric Administration, CSTAR program [NA10NWS
468005]
FX We wish to thank Xia Dong for her participation in the application of
the UU2DVar, Zachary Hansen for his assistance with the manual
blacklisting of the observations, and Matthew Lammers for his
investigations of observation bias and impact. We also appreciate the
three anonymous reviewers for their very helpful comments that improved
this paper. This research was supported by the National Ocean and
Atmospheric Administration under Grant NA10NWS 468005 as part of the
CSTAR program.
NR 33
TC 7
Z9 7
U1 0
U2 6
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0882-8156
J9 WEATHER FORECAST
JI Weather Forecast.
PD FEB
PY 2013
VL 28
IS 1
BP 254
EP 269
DI 10.1175/WAF-D-12-00027.1
PG 16
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098HT
UT WOS:000315540800014
ER
PT J
AU Sampson, CR
Wittmann, PA
Serra, EA
Tolman, HL
Schauer, J
Marchok, T
AF Sampson, Charles R.
Wittmann, Paul A.
Serra, Efren A.
Tolman, Hendrik L.
Schauer, Jessica
Marchok, Timothy
TI Evaluation of Wave Forecasts Consistent with Tropical Cyclone Warning
Center Wind Forecasts
SO WEATHER AND FORECASTING
LA English
DT Article
ID TRAPPED-FETCH WAVES; HURRICANE SEASON; MODELS; SYSTEM; NCEP;
PERFORMANCE; CURRENTS; OCEAN; NAVY
AB An algorithm to generate wave fields consistent with forecasts from the official U.S. tropical cyclone forecast centers has been made available in near real time to forecasters since summer 2007. The algorithm removes the tropical cyclone from numerical weather prediction model surface wind field forecasts, replaces the removed winds with interpolated values from surrounding grid points, and then adds a surface wind field generated from the official forecast into the background. The modified wind fields are then used as input into the WAVEWATCH III model to provide seas consistent with the official tropical cyclone forecasts. Although this product is appealing to forecasters because of its consistency and its superior tropical cyclone track forecast, there has been only anecdotal evaluation of resulting wave fields to date. This study evaluates this new algorithm for two years' worth of Atlantic tropical cyclones and compares results with those of WAVEWATCH III run with U.S. Navy Operational Global Atmospheric Prediction System (NOGAPS) surface winds alone. Results show that the new algorithm has generally improved forecasts of maximum significant wave heights and 12-ft seas' radii in proximity to tropical cyclones when compared with forecasts produced using only the NO GAPS surface winds.
C1 [Sampson, Charles R.] USN, Res Lab, Monterey, CA USA.
[Wittmann, Paul A.] Fleet Numer Meteorol & Oceanog Ctr, Monterey, CA USA.
[Serra, Efren A.] DeVine Consulting, Monterey, CA USA.
[Tolman, Hendrik L.] NOAA NCEP Environm Modeling Ctr, Camp Springs, MD USA.
[Schauer, Jessica] Natl Hurricane Ctr, Miami, FL USA.
[Marchok, Timothy] NOAA GFDL, Princeton, NJ USA.
RP Sampson, CR (reprint author), NRL, 7 Grace Hopper Ave,Stop 2, Monterey, CA 93943 USA.
EM sampson@nrlmry.navy.mil
FU Office of Naval Research
FX The authors would like to acknowledge the staffs at NHC, JTWC, and the
ship routers at the Naval Maritime Forecast Centers for suggestions,
evaluations, and moral support. Special thanks are extended to Chris
Landsea for his careful reading of this manuscript and for his efforts
within the JHT. Thanks to Chris Sisko, Chris Lauer, Hugh Cobb, Scott
Stripling, and the rest of the TAFB unit at NHC for technical expertise
and feedback. Thanks are extended to John Cook, Jim Hansen, Ted Tsui,
and Simon Chang for their efforts to get operationally oriented projects
like this funded. Thanks to Mike Fiorino, Chuck Skupniewicz, Ann
Schrader, Mike Frost, and Glenn Nelson for their contributions. The
manuscript is funded by the Office of Naval Research, and the support
and advocacy of Commander, Naval Meteorology and Oceanography Command,
is greatly appreciated. The views, opinions, and findings contained in
this report are those of the authors and should not be construed as an
official U.S. government position, policy, or decision.
NR 30
TC 6
Z9 6
U1 0
U2 7
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0882-8156
J9 WEATHER FORECAST
JI Weather Forecast.
PD FEB
PY 2013
VL 28
IS 1
BP 287
EP 294
DI 10.1175/WAF-D-12-00060.1
PG 8
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 098HT
UT WOS:000315540800016
ER
PT J
AU Brouillet, N
Despois, D
Baudry, A
Peng, TC
Favre, C
Wootten, A
Remijan, AJ
Wilson, TL
Combes, F
Wlodarczak, G
AF Brouillet, N.
Despois, D.
Baudry, A.
Peng, T. -C.
Favre, C.
Wootten, A.
Remijan, A. J.
Wilson, T. L.
Combes, F.
Wlodarczak, G.
TI CH3OCH3 in Orion-KL: a striking similarity with HCOOCH3
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE astrochemistry; ISM: molecules; radio lines: ISM; ISM: individual
objects: Orion-KL
ID MOLECULAR LINE SURVEY; STAR-FORMING REGIONS; GAS-PHASE CHEMISTRY;
DIMETHYL ETHER; SUBMILLIMETER ARRAY; METHYL FORMATE; HOT-CORE;
INTERSTELLAR-MOLECULES; ORGANIC-MOLECULES; COMPLEX CHEMISTRY
AB Context. Orion-KL is a remarkable, nearby star-forming region where a recent explosive event has generated shocks that could have released complex molecules from the grain mantles.
Aims. A comparison of the distribution of the different complex molecules will help in understanding their formation and constraining the chemical models.
Methods. We used several data sets from the Plateau de Bure Interferometer to map the dimethyl ether emission with different arcsec spatial resolutions and different energy levels (from E-up = 18 to 330 K) to compare with our previous methyl formate maps.
Results. Our data show remarkable similarity between the dimethyl ether (CH3OCH3) and the methyl formate (HCOOCH3) distributions even on a small scale (1.8 '' x 0.8 '' or similar to 500 AU). This long suspected similarity, seen from both observational and theoretical arguments, is demonstrated with unprecedented confidence, with a correlation coefficient of maps similar to 0.8.
Conclusions. A common precursor is the simplest explanation of our correlation. Comparisons with previous laboratory work and chemical models suggest the major role of grain surface chemistry and a recent release, probably with little processing, of mantle molecules by shocks. In this case the CH3O radical produced from methanol ice would be the common precursor (whereas ethanol, C2H5OH, is produced from the radical CH2OH). The alternative gas phase scheme, where protonated methanol CH3OH2+ is the common precursor to produce methyl formate and dimethyl ether through reactions with HCOOH and CH3OH, is also compatible with our data. Our observations cannot yet definitely allow a choice between the different chemical processes, but the tight correlation between the distributions of HCOOCH3 and CH3OCH3 strongly contrasts with the different behavior we observe for the distributions of ethanol and formic acid. This provides a very significant constraint on models.
C1 [Brouillet, N.; Despois, D.; Baudry, A.; Peng, T. -C.] Univ Bordeaux, LAB, UMR 5804, F-33270 Floirac, France.
[Brouillet, N.; Despois, D.; Baudry, A.; Peng, T. -C.] CNRS, LAB, UMR 5804, F-33270 Floirac, France.
[Favre, C.] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
[Wootten, A.; Remijan, A. J.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA.
[Wilson, T. L.] USN, Res Lab, Washington, DC 20375 USA.
[Combes, F.] Observ Paris, CNRS, LERMA, F-75014 Paris, France.
[Wlodarczak, G.] Univ Lille 1, Lab Phys Lasers Atomes & Mol, UMR 8523, F-59655 Villeneuve Dascq, France.
RP Brouillet, N (reprint author), Univ Bordeaux, LAB, UMR 5804, F-33270 Floirac, France.
EM brouillet@obs.u-bordeaux1.fr; despois@obs.u-bordeaux1.fr;
baudry@obs.u-bordeaux1.fr; favre@phys.au.dk; awootten@nrao.edu;
aremijan@nrao.edu; tom.wilson@nrl.navy.mil; francoise.combes@obspm.fr;
georges.wlodarczak@univ-lille1.fr
FU INSU/CNRS (France); MPG (Germany); IGN (Spain); CNRS national programs
PCMI (Physics and Chemistry of the Interstellar Medium); GDR Exobiology
FX Based on observations carried out with the IRAM Plateau de Bure
Interferometer. IRAM is supported by INSU/CNRS (France), MPG (Germany)
and IGN (Spain).; This research has made use of the SIMBAD database,
operated at the CDS, Strasbourg, France, and of the Splatalogue database
(http://www.splatalogue.net, Remijan et al. 2007). This work was
supported by the CNRS national programs PCMI (Physics and Chemistry of
the Interstellar Medium) and GDR Exobiology. We thank J. Cernicharo for
his IRAM 30 m spectra. We thank the referee and the editor for raising
interesting issues.
NR 63
TC 19
Z9 19
U1 0
U2 11
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 1432-0746
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD FEB
PY 2013
VL 550
AR A46
DI 10.1051/0004-6361/201219983
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 089AJ
UT WOS:000314879700046
ER
PT J
AU Gonzalez-Alfonso, E
Fischer, J
Bruderer, S
Muller, HSP
Gracia-Carpio, J
Sturm, E
Lutz, D
Poglitsch, A
Feuchtgruber, H
Veilleux, S
Contursi, A
Sternberg, A
Hailey-Dunsheath, S
Verma, A
Christopher, N
Davies, R
Genzel, R
Tacconi, L
AF Gonzalez-Alfonso, E.
Fischer, J.
Bruderer, S.
Mueller, H. S. P.
Gracia-Carpio, J.
Sturm, E.
Lutz, D.
Poglitsch, A.
Feuchtgruber, H.
Veilleux, S.
Contursi, A.
Sternberg, A.
Hailey-Dunsheath, S.
Verma, A.
Christopher, N.
Davies, R.
Genzel, R.
Tacconi, L.
TI Excited OH+, H2O+, and H3O+ in NGC 4418 and Arp 220
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE line: formation; line: identification; ISM: abundances; galaxies: ISM;
infrared: galaxies; molecular processes
ID IMPACT ROTATIONAL-EXCITATION; LUMINOUS INFRARED GALAXIES; LASER
MAGNETIC-RESONANCE; STAR-FORMING REGIONS; RAY IONIZATION RATE; STARBURST
GALAXY; INTERSTELLAR OH+; HERSCHEL-PACS; MOLECULAR GAS; DOMINATED
REGIONS
AB We report on Herschel/PACS observations of absorption lines of OH+, H2O+ and H3O+ in NGC 4418 and Arp 220. Excited lines of OH+ and H2O+ with E-lower of at least 285 and similar to 200 K, respectively, are detected in both sources, indicating radiative pumping and location in the high radiation density environment of the nuclear regions. Abundance ratios OH+/H2O+ of 1-2.5 are estimated in the nuclei of both sources. The inferred OH+ column and abundance relative to H nuclei are (0.5-1) x 10(16) cm(-2) and similar to 2 x 10(-8), respectively. Additionally, in Arp 220, an extended low excitation component around the nuclear region is found to have OH+/H2O+ similar to 5-10. H3O+ is detected in both sources with N(H3O+) similar to (0.5-2) x 10(16) cm(-2), and in Arp 220 the pure inversion, metastable lines indicate a high rotational temperature of similar to 500 K, indicative of formation pumping and/or hot gas. Simple chemical models favor an ionization sequence dominated by H+ -> O+ -> OH+ -> H2O+ -> H3O+, and we also argue that the H+ production is most likely dominated by X-ray/cosmic ray ionization. The full set of observations and models leads us to propose that the molecular ions arise in a relatively low density (similar to 10(4) cm(-3)) interclump medium, in which case the ionization rate per H nucleus (including secondary ionizations) is zeta > 10(-13) s(-1), a lower limit that is several x 10(2) times the highest current rate estimates for Galactic regions. In Arp 220, our lower limit for zeta is compatible with estimates for the cosmic ray energy density inferred previously from the supernova rate and synchrotron radio emission, and also with the expected ionization rate produced by X-rays. In NGC 4418, we argue that X-ray ionization due to an active galactic nucleus is responsible for the molecular ion production.
C1 [Gonzalez-Alfonso, E.] Univ Alcala de Henares, Dept Fis & Matemat, Madrid 28871, Spain.
[Fischer, J.] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Bruderer, S.; Gracia-Carpio, J.; Sturm, E.; Lutz, D.; Poglitsch, A.; Feuchtgruber, H.; Contursi, A.; Davies, R.; Genzel, R.; Tacconi, L.] Max Planck Inst Extraterr Phys MPE, D-85748 Garching, Germany.
[Mueller, H. S. P.] Univ Cologne, Inst Phys 1, D-50937 Cologne, Germany.
[Veilleux, S.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[Veilleux, S.] NASA, Astroparticle Phys Lab, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Sternberg, A.] Tel Aviv Univ, Sackler Sch Phys & Astron, IL-69978 Ramat Aviv, Israel.
[Hailey-Dunsheath, S.] CALTECH, Pasadena, CA 91125 USA.
[Verma, A.; Christopher, N.] Univ Oxford, Oxford Astrophys, Oxford OX1 3RH, England.
RP Gonzalez-Alfonso, E (reprint author), Univ Alcala de Henares, Dept Fis & Matemat, Campus Univ, Madrid 28871, Spain.
EM eduardo.gonzalez@uah.es
OI Mueller, Holger/0000-0002-0183-8927
FU BMVIT (Austria); ESAPRODEX (Belgium); CEA/CNES (France); DLR (Germany);
ASI/INAF (Italy); CICYT/MCYT (Spain); Spanish Ministerio de Ciencia e
Innovacion [AYA2010-21697-C05-01]; NHSC; Bundesministerium fur Bildung
und Forschung (BMBF) [FKZ 50OF0901]; NASA [RSA 1427277]; NASA
FX We thank the referee, David A. Neufeld, for useful indications that
improved the manuscript. PACS has been developed by a consortium of
institutes led by MPE (Germany) and including UVIE (Austria); KU Leuven,
CSL, IMEC (Belgium); CEA, LAM (France); MPIA (Germany);
INAFIFSI/OAA/OAP/OAT, LENS, SISSA (Italy); IAC (Spain). This development
has been supported by the funding agencies BMVIT (Austria), ESAPRODEX
(Belgium), CEA/CNES (France), DLR (Germany), ASI/INAF (Italy), and
CICYT/MCYT (Spain). E. G.-A. is a Research Associate at the
Harvard-Smithsonian Center for Astrophysics, and thanks the support by
the Spanish Ministerio de Ciencia e Innovacion under project
AYA2010-21697-C05-01. Basic research in IR astronomy at NRL is funded by
the US ONR; J.F. also acknowledges support from the NHSC. H. S. P. M.
acknowledges support by the Bundesministerium fur Bildung und Forschung
(BMBF) through project FKZ 50OF0901 (ICC HIFI Herschel). S. V. thanks
NASA for partial support of this research via Research Support Agreement
RSA 1427277, support from a Senior NPP Award from NASA, and his host
institution, the Goddard Space Flight Center. This research has made use
of NASA's Astrophysics Data System (ADS) and of GILDAS software
(http://www.iram.fr/IRAMFR/GILDAS).
NR 89
TC 36
Z9 36
U1 0
U2 10
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 1432-0746
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD FEB
PY 2013
VL 550
AR A25
DI 10.1051/0004-6361/201220466
PG 23
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 089AJ
UT WOS:000314879700025
ER
PT J
AU Gemmill, KB
Deschamps, JR
Delehanty, JB
Susumu, K
Stewart, MH
Glaven, RH
Anderson, GP
Goldman, ER
Huston, AL
Medintz, IL
AF Gemmill, Kelly Boeneman
Deschamps, Jeffrey R.
Delehanty, James B.
Susumu, Kimihiro
Stewart, Michael H.
Glaven, Richard H.
Anderson, George P.
Goldman, Ellen R.
Huston, Alan L.
Medintz, Igor L.
TI Optimizing Protein Coordination to Quantum Dots with Designer Peptidyl
Linkers
SO BIOCONJUGATE CHEMISTRY
LA English
DT Article
ID RESONANCE ENERGY-TRANSFER; SINGLE-DOMAIN ANTIBODIES; BIOCOMPATIBLE
SEMICONDUCTOR; LIGANDS; BINDING; NANOPARTICLES; NANOCRYSTALS;
PURIFICATION; CONJUGATION; STABILITY
AB Semiconductor quantum dots (QDs) demonstrate select optical properties that make them of particular use in biological imaging and biosensing. Controlled attachment of biomolecules such as proteins to the QD surface is thus critically necessary for development of these functional nanobiomaterials. QD surface coatings such as poly(ethylene glycol) impart colloidal stability to the QDs, making them usable in physiological environments, but can impede attachment of proteins due to steric interactions. While this problem is being partially addressed through the development of more compact QD ligands, here we present an alternative and complementary approach to this issue by engineering rigid peptidyl linkers that can be appended onto almost all expressed proteins. The linkers are specifically designed to extend a terminal polyhistidine sequence out from the globular protein structure and penetrate the QD ligand coating to enhance binding by metal-affinity driven coordination. a-Helical linkers of two lengths terminating in either a single or triple hexahistidine motif were fined onto a single-domain antibody; these were then self-assembled onto QDs to create a model immunosensor system targeted against the biothreat agent ricin. We utilized this system to systematically evaluate the peptidyl linker design in functional assays using QDs stabilized with four different types of coating ligands including poly(ethylene glycol). We show that increased linker length, but surprisingly not added histidines, can improve protein to QD attachment and sensor performance despite the surface ligand size with both custom and commercial QD preparations. Implications for these findings on the development of QD-based biosensors are discussed.
C1 [Gemmill, Kelly Boeneman; Deschamps, Jeffrey R.; Delehanty, James B.; Glaven, Richard H.; Anderson, George P.; Goldman, Ellen R.; Medintz, Igor L.] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
[Susumu, Kimihiro; Stewart, Michael H.; Huston, Alan L.] USN, Res Lab, Div Opt Sci, Washington, DC 20375 USA.
[Susumu, Kimihiro] Sotera Def Solut, Annapolis Jct, MD 20701 USA.
[Glaven, Richard H.] Nova Res Inc, Alexandria, VA 22308 USA.
RP Medintz, IL (reprint author), USN, Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA.
EM Igor.medintz@nrl.navy.mil
RI Gemmill, Kelly/G-2167-2012; Anderson, George/D-2461-2011;
OI Anderson, George/0000-0001-7545-9893; Deschamps,
Jeffrey/0000-0001-5845-0010
FU DTRA JSTO MIPR [B112582M]
FX The authors thank D. Prasuhn for technical assistance with peptide
preparation and acknowledge the NRL NSI, DARPA, and DTRA JSTO MIPR #
B112582M.
NR 54
TC 19
Z9 19
U1 2
U2 64
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1043-1802
J9 BIOCONJUGATE CHEM
JI Bioconjugate Chem.
PD FEB
PY 2013
VL 24
IS 2
BP 269
EP 281
DI 10.1021/bc300644p
PG 13
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Chemistry, Multidisciplinary; Chemistry, Organic
SC Biochemistry & Molecular Biology; Chemistry
GA 095HS
UT WOS:000315325900014
ER
PT J
AU Hargrave, B
Downey, H
Strange, R
Murray, L
Cinnamond, C
Lundberg, C
Israel, A
Chen, YJ
Marshall, W
Heller, R
AF Hargrave, B.
Downey, H.
Strange, R., Jr.
Murray, L.
Cinnamond, C.
Lundberg, C.
Israel, A.
Chen, Y-J
Marshall, W., Jr.
Heller, R.
TI Electroporation-mediated gene transfer directly to the swine heart
SO GENE THERAPY
LA English
DT Article
DE electroporation; heart; in vivo; gene transfer; swine
ID ENDOTHELIAL GROWTH-FACTOR; PLASMID DNA; SKELETAL-MUSCLE; IN-VIVO;
COLLATERAL DEVELOPMENT; ISCHEMIC-MYOCARDIUM; PORCINE HEART; BLOOD-FLOW;
THERAPY; INJECTION
AB In vivo gene transfer to the ischemic heart via electroporation holds promise as a potential therapeutic approach for the treatment of heart disease. In the current study, we investigated the use of in vivo electroporation for gene transfer using three different penetrating electrodes and one non-penetrating electrode. The hearts of adult male swine were exposed through a sternotomy. Eight electric pulses synchronized to the rising phase of the R wave of the electrocardiogram were administered at varying pulse widths and field strengths following an injection of either a plasmid encoding luciferase or one encoding green fluorescent protein. Four sites on the anterior wall of the left ventricle were treated. Animals were killed 48 h after injection and electroporation and gene expression was determined. Results were compared with sites in the heart that received plasmid injection but no electric pulses or were not treated. Gene expression was higher in all electroporated sites when compared with injection only sites demonstrating the robustness of this approach. Our results provide evidence that in vivo electroporation can be a safe and effective non-viral method for delivering genes to the heart, in vivo. Gene Therapy (2013) 20, 151-157; doi:10.1038/gt.2012.15; published online 29 March 2012
C1 [Hargrave, B.; Downey, H.; Lundberg, C.; Israel, A.; Chen, Y-J; Heller, R.] Old Dominion Univ, Frank Reidy Res Ctr Bioelect, Norfolk, VA 23508 USA.
[Hargrave, B.] Old Dominion Univ, Coll Sci, Norfolk, VA 23508 USA.
[Strange, R., Jr.; Cinnamond, C.] USN, Med Ctr Portsmouth, Portsmouth, VA USA.
[Murray, L.] Sobran, Fairfax, VA USA.
[Marshall, W., Jr.] Univ S Florida, Coll Med, Tampa, FL USA.
[Heller, R.] Old Dominion Univ, Coll Hlth Sci, Norfolk, VA 23508 USA.
RP Heller, R (reprint author), Old Dominion Univ, Frank Reidy Res Ctr Bioelect, 4211 Monarch Way,Suite 300, Norfolk, VA 23508 USA.
EM rheller@odu.edu
RI Heller, Richard/I-6605-2012
FU National Institutes of Health [R21 HL005441]; Frank Reidy Research
Center for Bioelectrics at Old Dominion University
FX This research was supported in part by a research grant from the
National Institutes of Health R21 HL005441 and by the Frank Reidy
Research Center for Bioelectrics at Old Dominion University. We thank Dr
Mark Jaroszeski (University of South Florida) for construction of the
electrode arrays.
NR 24
TC 19
Z9 19
U1 0
U2 2
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0969-7128
J9 GENE THER
JI Gene Ther.
PD FEB
PY 2013
VL 20
IS 2
BP 151
EP 157
DI 10.1038/gt.2012.15
PG 7
WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Genetics & Heredity; Medicine, Research & Experimental
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Genetics & Heredity; Research & Experimental Medicine
GA 091UD
UT WOS:000315074400006
PM 22456328
ER
PT J
AU Walper, SA
Lee, PAB
Goldman, ER
Anderson, GP
AF Walper, Scott A.
Lee, P. Audrey Brozozog
Goldman, Ellen R.
Anderson, George P.
TI Comparison of single domain antibody immobilization strategies evaluated
by surface plasmon resonance
SO JOURNAL OF IMMUNOLOGICAL METHODS
LA English
DT Article
DE Single domain antibodies; Ricin; EA1; SPR; Avidin; MAGPIX
ID PHOSPHATASE FUSION PROTEINS; LIGHT-CHAINS; FRAGMENTS; BIOTINYLATION;
DISPLAY; STREPTAVIDIN; TECHNOLOGY; EXPRESSION; STABILITY; SELECTION
AB The use of single domain antibodies (sdAbs) in place of conventional antibodies for both therapeutic and diagnostic applications continues to grow. SdAbs offer a number of advantages when compared to conventional antibodies such as their small size and low structural complexity which allows them to readily be produced as fusions in a variety formats. In this work we compared the utility of various C-terminal fusions and immobilization strategies for two sdAbs; one which recognizes ricin and the other EA1, an S-layer protein, of Bacillus anthracis. Comparisons were made between direct covalent attachment and affinity immobilization using a biotin-streptavidin interaction for the standard sdAb monomers, randomly and site-specifically biotinylated monomers, and fusion constructs of alkaline phosphatase dimers and streptavidin core tetramers. The sdAb binding and regeneration was evaluated by surface plasmon resonance in a multiplexed format. The construct that provided the highest density of active molecules by at least a factor of two was the sdAb-streptavidin core tetramer, followed by the sdAb-alkaline phosphatase and then the site-specifically biotinylated monomer. The poorest performing immobilization methods were the two most common, direct covalent attachment and the randomly biotinylated sdAb attached via NeutrAvidin. These improvements directly correlated to antigen capture in SPR assays. Similarly, the oriented immobilization method also translated to improvements in limit of detection assays using a bead-based system. The sdAb-streptavidin core provided more than a 100-fold improvement in the limit of detection of EA1, from similar to 200 ng/mL to to 1.6 ng/mL, while improvement for ricin detection was less but still a significant 5-fold decrease, going from 1.6 ng/mL down to 0.32 ng/mL This demonstrated improvement in limits of detection is an advantage that should be transferable to most assay formats. Published by Elsevier B.V.
C1 [Walper, Scott A.; Goldman, Ellen R.; Anderson, George P.] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
[Lee, P. Audrey Brozozog] NOVA Res Inc, Alexandria, VA 22308 USA.
RP Anderson, GP (reprint author), USN, Res Lab, Ctr Bio Mol Sci & Engn, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM George.anderson@nrl.navy.mil
RI Anderson, George/D-2461-2011;
OI Anderson, George/0000-0001-7545-9893; LEE, PAMELA/0000-0002-9341-0759
FU JSTO-CBD/DTRA Project [MEDBIO 04 10 NRL 001]; Naval Research Laboratory
(NRL); Office of Naval Research (ONR) [6.1]
FX This work was supported by JSTO-CBD/DTRA Project #-CBS MEDBIO 04 10 NRL
001 and the Naval Research Laboratory (NRL) and the Office of Naval
Research (ONR) 6.1 base funding. We would like to thank Dr. Jill
Czarnecki and Tetracore for the antibodies they freely donated to our
research efforts.
NR 40
TC 14
Z9 14
U1 3
U2 62
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-1759
J9 J IMMUNOL METHODS
JI J. Immunol. Methods
PD FEB
PY 2013
VL 388
IS 1-2
BP 68
EP 77
DI 10.1016/j.jim.2012.11.014
PG 10
WC Biochemical Research Methods; Immunology
SC Biochemistry & Molecular Biology; Immunology
GA 095WM
UT WOS:000315365700010
PM 23261918
ER
PT J
AU Perkins, FK
Friedman, AL
Cobas, E
Campbell, PM
Jernigan, GG
Jonker, BT
AF Perkins, F. K.
Friedman, A. L.
Cobas, E.
Campbell, P. M.
Jernigan, G. G.
Jonker, B. T.
TI Chemical Vapor Sensing with Mono layer MoS2
SO NANO LETTERS
LA English
DT Article
DE Chemical sensor; MoS2; molybdenum disulfide; two-dimensional materials;
vapor sensing
ID CARBON NANOTUBES; LARGE-AREA; GRAPHENE; TRANSISTORS; GROWTH;
PHOTOTRANSISTORS; GAP
AB Two-dimensional materials such as graphene show great potential for future nanoscale electronic devices. The high surface-to-volume ratio is a natural asset for applications such as chemical sensing, where perturbations to the surface resulting in charge redistribution are readily manifested in the transport characteristics. Here we show that single monolayer MoS2 functions effectively as a chemical sensor, exhibiting highly selective reactivity to a range of analytes and providing sensitive transduction of transient surface physisorption events to the conductance of the monolayer channel. We find strong response upon exposure to triethylamine, a decomposition product of the V-series nerve gas agents. We discuss these results in the context of analyte/sensor interaction in which the analyte serves as either an electron donor or acceptor, producing a temporary charge perturbation of the sensor material. We find highly selective response to electron donors and little response to electron acceptors, consistent with the weak n-type character of our MoS2. The MoS2 sensor exhibits a much higher selectivity than carbon nanotube-based sensors.
C1 [Perkins, F. K.; Friedman, A. L.; Cobas, E.; Campbell, P. M.; Jernigan, G. G.; Jonker, B. T.] USN, Res Lab, Washington, DC 20375 USA.
RP Perkins, FK (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM keith.perkins@nrl.navy.mil; berry.jonker@nrl.navy.mil
RI Friedman, Adam/D-9610-2011
OI Friedman, Adam/0000-0003-0597-5432
FU core programs at NRL; NRL Karles Fellow program
FX This work was supported by core programs at NRL. E.C. and A.L.F.
gratefully acknowledge support through the NRL Karles Fellow program.
The authors gratefully acknowledge Olaf van't Erve for creating Figure
la, Jeremy Robinson for the graphene used in the sensor, and Arthur Snow
for the distilled triethylamine. The authors further acknowledge use of
facilities in the NRL Nanoscience Institute and thank David Zapotok and
Dean St. Amand for continual technical support. F.KP., A.L.F., and
B.T.J. conceived of the experiment; A.L.F. fabricated the samples;
F.K.P. performed the analyte exposures and recorded the sensor response;
F.KP. and G.G.J. provided chemical analysis; A.L.F. and P.M.C. performed
electrical characterization. All authors contributed to the
interpretation of the data; F.K.P., A.L.F., and B.T.J. wrote the paper.
NR 28
TC 307
Z9 312
U1 45
U2 561
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD FEB
PY 2013
VL 13
IS 2
BP 668
EP 673
DI 10.1021/nl3043079
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 091WC
UT WOS:000315079500057
PM 23339527
ER
PT J
AU Blau, J
Cohn, K
Colson, WB
AF Blau, Joseph
Cohn, Keith
Colson, William B.
TI High average power free-electron lasers
SO OPTICAL ENGINEERING
LA English
DT Article
DE free-electron lasers; high-power lasers; laser applications
ID ENERGY RECOVERY LINACS; SHORT-RAYLEIGH-LENGTH; 1ST OPERATION;
STIMULATED-EMISSION; MAGNETIC-FIELD; FEL; RADIATION; MODE; ERL;
EXTRACTION
AB Ever since the first free-electron laser (FEL) was both conceived and demonstrated in the 1970s at Stanford, it has attracted much attention as a promising foundation for a high average power light source. Since its light is produced from free electrons, an FEL can be designed to lase at virtually any wavelength. Furthermore, since its light is generated from a relativistic beam that is continually replenished, its gain medium cannot be damaged by any conventional means. Accordingly, as there have been several ambitious attempts to design and construct high average power FELs over the past several decades, we chronicle some of these efforts. Additionally, we provide an overview of FEL technology and theory, discuss some of the obstacles that remain in the construction of a high-power FEL, and provide a road map toward a megawatt-class device. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.52.2.021013]
C1 [Blau, Joseph; Cohn, Keith; Colson, William B.] USN, Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
RP Blau, J (reprint author), USN, Postgrad Sch, Dept Phys, 833 Dyer Rd, Monterey, CA 93943 USA.
EM blau@nps.edu
FU Office of Naval Research
FX The authors wish to thank Todd Smith, George Neil, and Charlie Brau for
useful discussions and suggestions. This work has been funded by the
Office of Naval Research.
NR 74
TC 0
Z9 0
U1 4
U2 15
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 FEB
PY 2013
VL 52
IS 2
AR 021013
DI 10.1117/1.OE.52.2.021013
PG 8
WC Optics
SC Optics
GA 092WX
UT WOS:000315154800017
ER
PT J
AU Bowman, SR
AF Bowman, Steven R.
TI High-power diode-pumped solid-state lasers
SO OPTICAL ENGINEERING
LA English
DT Article
DE rare earth; solid-state laser materials; diode pumping
ID CRYSTAL FIBER LASER; ND-YAG; HEAT-GENERATION; CERAMIC LASER; EMISSION;
SLAB
AB Diode-pumped solid-state laser technology is reviewed with an emphasis on laser materials and concepts important to high power systems with excellent beam quality. A first principal approach to power scaling is taken in order to summarize and compare the wide variety of laser architectures. Successful approaches are highlighted and directions for future work are discussed. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.52.2.021012]
C1 USN, Res Lab, Opt Mat & Devices Branch, Washington, DC 20375 USA.
RP Bowman, SR (reprint author), USN, Res Lab, Opt Mat & Devices Branch, Washington, DC 20375 USA.
EM Steven.bowman@nrl.navy.mil
FU Office of Naval Research
FX This work was support by the Office of Naval Research.
NR 46
TC 4
Z9 4
U1 5
U2 42
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 FEB
PY 2013
VL 52
IS 2
AR 021012
DI 10.1117/1.OE.52.2.021012
PG 9
WC Optics
SC Optics
GA 092WX
UT WOS:000315154800016
ER
PT J
AU Kiel, DH
AF Kiel, David H.
TI Is this the time for a high-energy laser weapon program?
SO OPTICAL ENGINEERING
LA English
DT Article
DE Department of Defense; high-energy laser weapon; laser system and
components; Navy; Soviet; warfare
AB The U.S. Department of Defense (DoD) has made large investments weaponizing laser technology for air defense. Despite billions of dollars spent, there has not been a successful transition of a high-energy laser (HEL) weapon from the lab to the field. Is the dream of a low-cost-per-shot, deep-magazine, speed-of-light HEL weapon an impossible dream or a set of technologies that are ready to emerge on the modern battlefield? Because of the rapid revolution taking place in modern warfare that is making conventional defensive weapons very expensive relative to the offensive weapons systems, the pull for less expensive air defense may necessitate a HEL weapon system. Also, due to the recent technological developments in solid-state lasers (SSL), especially fiber lasers, used throughout manufacturing for cutting and welding, a HEL weapon finally may be able to meet all the requirements of ease of use, sustainability, and reliability. Due to changes in warfare and SSL technology advances, the era of HEL weapons isn't over; it may be just starting if DoD takes an evolutionary approach to fielding a HEL weapon. The U.S. Navy, with its large ships and their available electric power, should lead the way. (c) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.52.2.021008]
C1 [Kiel, David H.] USN, Arlington, VA USA.
RP Kiel, DH (reprint author), 1834 Burke St SE, Washington, DC 20003 USA.
EM dkiel@innolog.com
NR 10
TC 3
Z9 3
U1 2
U2 28
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 FEB
PY 2013
VL 52
IS 2
AR 021008
DI 10.1117/1.OE.52.2.021008
PG 4
WC Optics
SC Optics
GA 092WX
UT WOS:000315154800012
ER
PT J
AU Kim, W
Villalobos, G
Baker, C
Frantz, J
Shaw, B
Bayya, S
Sadowski, B
Hunt, M
Aggarwal, I
Sanghera, J
AF Kim, Woohong
Villalobos, Guillermo
Baker, Colin
Frantz, Jesse
Shaw, Brandon
Bayya, Shyam
Sadowski, Bryan
Hunt, Michael
Aggarwal, Ishwar
Sanghera, Jasbinder
TI Ceramic windows and gain media for high-energy lasers
SO OPTICAL ENGINEERING
LA English
DT Article
DE spinel; transparent ceramics; laser ceramics; sesquioxide; beta-SiC
AB Recent progress in high-quality transparent ceramic window materials (MgAl2O4 spinel and beta-SiC) and high-power solid-state laser materials (Yb3+ : Y2O3, Yb3+ : Lu2O3, and Ho3+ : Lu2O3) is reported. Spinel ceramic demonstrates a record low-absorption loss of 6 ppm/cm at 1.06 mu m. The capability of fabricating various shapes and sizes of spinel ceramics is also demonstrated. We also report optical transparency from a beta-SiC ceramic fabricated by field assisted sintering technology (FAST). We report lasing in hot-pressed Yb3+ : Y2O3 and Yb3+ : Lu2O3 ceramic made from coprecipitated powder. The highest ever reported output power and efficiency from 10% doped Yb3+ : Lu2O3 ceramic is also presented. Lasing oscillation from hot pressed composite of five-layered Yb3+ : Y2O3 ceramic is also demonstrated for the first time. (c) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.52.2.021003]
C1 [Kim, Woohong; Villalobos, Guillermo; Baker, Colin; Frantz, Jesse; Shaw, Brandon; Bayya, Shyam; Sanghera, Jasbinder] USN, Res Lab, Washington, DC 20375 USA.
[Sadowski, Bryan; Aggarwal, Ishwar] Sotera Def Solut, Crofton, MD 21114 USA.
[Hunt, Michael] Univ Res Fdn, Greenbelt, MD 20770 USA.
RP Kim, W (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM rick.kim@nrl.navy.mil
RI Baker, Colin/I-6657-2015
NR 15
TC 3
Z9 3
U1 2
U2 35
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 FEB
PY 2013
VL 52
IS 2
AR 021003
DI 10.1117/1.OE.52.2.021003
PG 8
WC Optics
SC Optics
GA 092WX
UT WOS:000315154800007
ER
PT J
AU Janosi, L
Compton, JR
Legler, PM
Steele, KE
Davis, JM
Matyas, GR
Millard, CB
AF Janosi, Laszlo
Compton, Jaimee R.
Legler, Patricia M.
Steele, Keith E.
Davis, Jon M.
Matyas, Gary R.
Millard, Charles B.
TI Disruption of the Putative Vascular Leak Peptide Sequence in the
Stabilized Ricin Vaccine Candidate RTA1-33/44-198
SO TOXINS
LA English
DT Article
DE ricin; recombinant vaccines; vascular leak peptide; amino acid
substitutions; BALB/c mice; D75N/R48C/T77C; RTA1-33/44-198
ID A-CHAIN; MOLECULAR-GRAPHICS; PROTEIN VACCINE; MICE; INHALATION;
PROTECTION; ANTIBODIES; EFFICACY; AEROSOL; BINDING
AB Vitetta and colleagues identified and characterized a putative vascular leak peptide (VLP) consensus sequence in recombinant ricin toxin A-chain (RTA) that contributed to dose-limiting human toxicity when RTA was administered intravenously in large quantities during chemotherapy. We disrupted this potentially toxic site within the more stable RTA1-33/44-198 vaccine immunogen and determined the impact of these mutations on protein stability, structure and protective immunogenicity using an experimental intranasal ricin challenge model in BALB/c mice to determine if the mutations were compatible. Single amino acid substitutions at the positions corresponding with RTA D75 (to A, or N) and V76 (to I, or M) had minor effects on the apparent protein melting temperature of RTA1-33/44-198 but all four variants retained greater apparent stability than the parent RTA. Moreover, each VLP(-) variant tested provided protection comparable with that of RTA1-33/44-198 against supralethal intranasal ricin challenge as judged by animal survival and several biomarkers. To understand better how VLP substitutions and mutations near the VLP site impact epitope structure, we introduced a previously described thermal stabilizing disulfide bond (R48C/T77C) along with the D75N or V76I substitutions in RTA1-33/44-198. The D75N mutation was compatible with the adjacent stabilizing R48C/T77C disulfide bond and the T-m was unaffected, whereas the V76I mutation was less compatible with the adjacent disulfide bond involving C77. A crystal structure of the RTA1-33/44-198 R48C/T77C/D75N variant showed that the structural integrity of the immunogen was largely conserved and that a stable immunogen could be produced from E. coli. We conclude that it is feasible to disrupt the VLP site in RTA1-33/44-198 with little or no impact on apparent protein stability or protective efficacy in mice and such variants can be stabilized further by introduction of a disulfide bond.
C1 [Janosi, Laszlo; Steele, Keith E.; Matyas, Gary R.] Walter Reed Army Inst Res, Silver Spring, MD 20910 USA.
[Compton, Jaimee R.] NOVA Res Inc, Alexandria, VA 22308 USA.
[Legler, Patricia M.] USN, Res Labs, Washington, DC 20375 USA.
[Davis, Jon M.] USA, Med Res Inst Infect Dis, Frederick, MD 21702 USA.
[Millard, Charles B.] USA, Med Res & Mat Command, Ft Detrick, MD 21702 USA.
RP Legler, PM (reprint author), USN, Res Labs, 4555 Overlook Ave, Washington, DC 20375 USA.
EM lacipaci@yahoo.com; jaimee.compton.ctr@nrl.navy.mil;
patricia.legler@nrl.navy.mil; steeleK@medImmune.com; jon.davis@osd.mil;
gmatyas@hivresearch.org; charles.b.millard@us.army.mil
OI Matyas, Gary/0000-0002-2074-2373
FU U.S. Army; Defense Threat Reduction Agency (DTRA) Joint Science &
Technology Office award [S.S.0003_06_WR_B]; National Institutes of
Health (NIH) [5U01AI082120-04]
FX We would like to thank Paul Facemire for providing photographs of
healthy lung tissue. This work was supported by the U.S. Army and a
Defense Threat Reduction Agency (DTRA) Joint Science & Technology Office
award S.S.0003_06_WR_B (to CBM) and National Institutes of Health (NIH)
sub-award 5U01AI082120-04 (to PML). The opinions or assertions contained
herein belong to the authors and are not necessarily the official views
of the U.S. Army, U.S. Navy, the U.S. Department of Defense, or the NIH.
NR 31
TC 1
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U1 1
U2 6
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 2072-6651
J9 TOXINS
JI Toxins
PD FEB
PY 2013
VL 5
IS 2
BP 224
EP 248
DI 10.3390/toxins5020224
PG 25
WC Toxicology
SC Toxicology
GA 096MJ
UT WOS:000315408000002
PM 23364220
ER
PT J
AU Tailleart, NR
Martin, FJ
Rayne, RJ
Natishan, PM
Kahn, H
Heuer, AH
AF Tailleart, N. R.
Martin, F. J.
Rayne, R. J.
Natishan, P. M.
Kahn, H.
Heuer, A. H.
TI Interstitial Hardening with Nitrogen for Improved Corrosion Resistance
SO ADVANCED MATERIALS & PROCESSES
LA English
DT Article
ID CARBON SUPERSATURATION; STAINLESS-STEELS; CARBURIZATION
C1 [Tailleart, N. R.; Martin, F. J.; Rayne, R. J.; Natishan, P. M.] USN, Res Lab, Washington, DC 20375 USA.
[Kahn, H.; Heuer, A. H.] Case Western Reserve Univ, Cleveland, OH 44106 USA.
RP Natishan, PM (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM natishan@nrl.navy.mil
FU Office of Naval Research; Naval Research Laboratory
FX The authors gratefully acknowledge the Office of Naval Research and the
Naval Research Laboratory for support of this work.
NR 9
TC 1
Z9 1
U1 0
U2 9
PU ASM INT
PI MATERIALS PARK
PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002
USA
SN 0882-7958
J9 ADV MATER PROCESS
JI Adv. Mater. Process.
PD FEB
PY 2013
VL 171
IS 2
BP 20
EP 23
PG 4
WC Materials Science, Multidisciplinary
SC Materials Science
GA 091RH
UT WOS:000315067000004
ER
PT J
AU DiNoto, V
Fontanella, JJ
Wintersgill, MC
Giffin, GA
Vezzu, K
Piga, M
Negro, E
AF DiNoto, V.
Fontanella, J. J.
Wintersgill, M. C.
Giffin, G. A.
Vezzu, K.
Piga, M.
Negro, E.
TI Pressure, Temperature, and Dew Point Broadband Electrical Spectroscopy
(PTD-BES) for the Investigation of Membranes for PEMFCs
SO FUEL CELLS
LA English
DT Article
DE AC-Impedance Spectroscopy; Ionic Conductivity; PEM Fuel Cell; Membrane;
Internal Humidification
ID PROTON CONDUCTING MEMBRANES; FUEL-CELLS; NAFION(R)
AB This work describes the construction, testing, and implementation of an instrument to measure the complex impedance (Z*()) spectra, from which the complex conductivity (sigma*()) and complex permittivity (E*()) spectra are derived, of conducting polymer membranes for fuel cells. The instrument consists of several interconnected components including a humidifier, a broadband electrical measurement cell with pressure, temperature, and humidity sensors, a heat circulator and a broadband electrical spectrometer. It is possible to control the cell (Tgas) and dew point (Tdp) temperatures with a precision greater than +/- 0.2 degrees C to obtain values of relative humidity (RH) with an error lower than +/- 1.4%. The experiments demonstrate that the values of Tdp and Tgas inside the cell are stable over time at the set point temperatures of Tgas=0140 degrees C and Tdp=-2099.9 degrees C (for any desired value of Tgas within +/- 0.2 degrees C). The powerful capability of the broadband electrical spectroscopy (BES) method is demonstrated by studying the electrical response of Nafion117 (R) at various temperatures and dew points. This technique allows the investigation of the electrical response of ionomeric materials, where the thermal effects are decoupled from the compositional modulation of the membranes in the presence of water vapor.
C1 [DiNoto, V.; Giffin, G. A.; Vezzu, K.; Piga, M.; Negro, E.] Univ Padua, Dept Chem Sci, I-35131 Padua, Italy.
[DiNoto, V.] ISTM CNR, Dept Chem Sci, Inst Mol Sci & Technol, I-35131 Padua, Italy.
[Fontanella, J. J.; Wintersgill, M. C.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
[Vezzu, K.] Univ Venice, Dept Mol Sci & Nanosyst, I-30121 Venice, VE, Italy.
RP DiNoto, V (reprint author), Univ Padua, Dept Chem Sci, Via Marzolo 1, I-35131 Padua, Italy.
EM vito.dinoto@unipd.it
OI Negro, Enrico/0000-0002-3340-3899; Vezzu', Keti/0000-0003-4156-7479; DI
NOTO, VITO/0000-0002-8030-6979
FU Italian MURST [4148]; Office of Naval Research
FX This research was funded by the Italian MURST project PRIN2008, entitled
"Direct polymer electrolyte membrane fuel cells: synthesis and study in
prototype cells of hybrid inorganic-organic membranes and electrode
materials" and Regione del Veneto (SMUPR n. 4148, Polo di ricerca del
set-tore fotovoltaico). The work of two of the authors (JJF and MCW) was
supported in part by the Office of Naval Research.
NR 19
TC 3
Z9 3
U1 0
U2 20
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 1615-6846
EI 1615-6854
J9 FUEL CELLS
JI Fuel Cells
PD FEB
PY 2013
VL 13
IS 1
SI SI
BP 48
EP 57
DI 10.1002/fuce.201200112
PG 10
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA 089NF
UT WOS:000314916600011
ER
PT J
AU Luhrs, C
Kane, M
Leseman, Z
Phillips, J
AF Luhrs, Claudia
Kane, Margaret
Leseman, Zayd
Phillips, Jonathan
TI Novel Process for Solid State Reduction of Metal Oxides and Hydroxides
SO METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND
MATERIALS PROCESSING SCIENCE
LA English
DT Article
ID WALL CARBON NANOTUBES; MAGNETIC NANOPARTICLES; COMBUSTION SYNTHESIS;
IRON NANOPARTICLES; ELECTRICAL CHARACTERIZATION; NICKEL NANOPARTICLES;
LASER PYROLYSIS; THIN-FILMS; PARTICLES; BIOMEDICINE
AB Recently the reductive expansion synthesis (RES) method was introduced as a means to create nano- and sub-micron metal particles and alloys by rapid heating of physical mixtures of urea with a metal nitrate. In the present work the generality of the RES method was demonstrated by creating metal micron and sub-micron particles from oxide and hydroxide precursors, and outlining the impact of temperature, precursor ratio, and gas flow rate on the product. For example, precursor selection impacted the temperature required for complete reduction, the amount of carbon present, and the size of the metal particles. For complete NiO reduction to micron scale particles, high urea content and a high temperature [ca. 1073 K (800 A degrees C)] were required. In contrast, Ni(OH)(2) was reduced to metal at far lower temperatures. Moreover, the Ni particles formed from NiOH were sub-micron (ca. 200 nm) in size and carbon encapsulated. Other parameter variations had a similarly significant impact. Indeed, the reciprocal relationship between inert gas flow rate and the extent of reduction supports the supposition that the primary mechanism of reduced metal particle formation is the reduction of metal oxide particles by gases produced by urea decomposition. Collectively these and other findings indicate the RES method can be manipulated to create a range of micron and sub-micron reduced metal particle architectures appropriate for different applications.
C1 [Luhrs, Claudia; Kane, Margaret] USN, Dept Aerosp & Mech Engn, Postgrad Sch, Monterey, CA 93943 USA.
[Leseman, Zayd] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA.
[Phillips, Jonathan] USN, Dept Phys, Postgrad Sch, Monterey, CA 93943 USA.
RP Luhrs, C (reprint author), USN, Dept Aerosp & Mech Engn, Postgrad Sch, Monterey, CA 93943 USA.
EM jphillip@nps.edu
RI Phillips, Jonathan/D-3760-2011
NR 50
TC 3
Z9 4
U1 3
U2 39
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5615
J9 METALL MATER TRANS B
JI Metall. Mater. Trans. B-Proc. Metall. Mater. Proc. Sci.
PD FEB
PY 2013
VL 44
IS 1
BP 115
EP 122
DI 10.1007/s11663-012-9756-x
PG 8
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 089KI
UT WOS:000314909000015
ER
PT J
AU Yaremchuk, M
Nechaev, D
AF Yaremchuk, Max
Nechaev, Dmitry
TI Covariance Localization with the Diffusion-Based Correlation Models
SO MONTHLY WEATHER REVIEW
LA English
DT Article
ID BACKGROUND-ERROR COVARIANCES; ENSEMBLE KALMAN FILTER; DATA ASSIMILATION;
POLYNOMIALS; OPERATORS; EQUATION
AB Improving the performance of ensemble filters applied to models with many state variables requires regularization of the covariance estimates by localizing the impact of observations on state variables. A covariance localization technique based on modeling of the sample covariance with polynomial functions of the diffusion operator (DL method) is presented. Performance of the technique is compared with the non-adaptive (NAL) and adaptive (AL) ensemble localization schemes in the framework of numerical experiments with synthetic covariance matrices in a realistically inhomogeneous setting. It is shown that the DL approach is comparable in accuracy with the AL method when the ensemble size is less than 100. With larger ensembles, the accuracy of the DL approach is limited by the local homogeneity assumption underlying the technique. Computationally, the DL method is comparable with the NAL technique if the ratio of the local decorrelation scale to the grid step is not too large.
C1 [Yaremchuk, Max] USN, Res Lab, Stennis Space Ctr, MS 39529 USA.
[Nechaev, Dmitry] Univ So Mississippi, Dept Marine Sci, Hattiesburg, MS 39406 USA.
RP Yaremchuk, M (reprint author), USN, Res Lab, Bldg 1009, Stennis Space Ctr, MS 39529 USA.
EM max.yaremchuk@nrlssc.navy.mil
FU ONR [0602435N]; North Pacific Research Board [828]; NSF
[362492-190200-05]
FX This study was supported by the ONR Program Element 0602435N as part of
the projects "Observation Impact" and ECOVARDA. Dmitri Nechaev was
supported by the North Pacific Research Board Award 828 and by the NSF
Award 362492-190200-05.
NR 34
TC 3
Z9 3
U1 0
U2 5
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0027-0644
J9 MON WEATHER REV
JI Mon. Weather Rev.
PD FEB
PY 2013
VL 141
IS 2
BP 848
EP 860
DI 10.1175/MWR-D-12-00089.1
PG 13
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 088LD
UT WOS:000314835000026
ER
PT J
AU Wechsler, LR
Tsao, JW
Levine, SR
Swain-Eng, RJ
Adams, RJ
Demaerschalk, BM
Hess, DC
Moro, E
Schwamm, LH
Steffensen, S
Stern, BJ
Zuckerman, SJ
Bhattacharya, P
Davis, LE
Yurkiewicz, IR
Alphonso, AL
AF Wechsler, Lawrence R.
Tsao, Jack W.
Levine, Steven R.
Swain-Eng, Rebecca J.
Adams, Robert J.
Demaerschalk, Bart M.
Hess, David C.
Moro, Elena
Schwamm, Lee H.
Steffensen, Steve
Stern, Barney J.
Zuckerman, Steven J.
Bhattacharya, Pratik
Davis, Larry E.
Yurkiewicz, Ilana R.
Alphonso, Aimee L.
TI Teleneurology applications Report of the Telemedicine Work Group of the
American Academy of Neurology
SO NEUROLOGY
LA English
DT Article
ID DEEP BRAIN-STIMULATION; ACUTE STROKE; COST-ANALYSIS; CARE; TELESTROKE;
FEASIBILITY; EXPERIENCE; TELEPHONE
AB Objective: To review current literature on neurology telemedicine and to discuss its application to patient care, neurology practice, military medicine, and current federal policy.
Methods: Review of practice models and published literature on primary studies of the efficacy of neurology telemedicine.
Results: Teleneurology is of greatest benefit to populations with restricted access to general and subspecialty neurologic care in rural areas, those with limited mobility, and those deployed by the military. Through the use of real-time audio-visual interaction, imaging, and store-and-forward systems, a greater proportion of neurologists are able to meet the demand for specialty care in underserved communities, decrease the response time for acute stroke assessment, and expand the collaboration between primary care physicians, neurologists, and other disciplines. The American Stroke Association has developed a defined policy on teleneurology, and the American Academy of Neurology and federal health care policy are beginning to follow suit.
Conclusions: Teleneurology is an effective tool for the rapid evaluation of patients in remote locations requiring neurologic care. These underserved locations include geographically isolated rural areas as well as urban cores with insufficient available neurology specialists. With this technology, neurologists will be better able to meet the burgeoning demand for access to neurologic care in an era of declining availability. An increase in physician awareness and support at the federal and state level is necessary to facilitate expansion of telemedicine into further areas of neurology. Neurology (R) 2013;80:670-676
C1 [Wechsler, Lawrence R.] Univ Pittsburgh, Sch Med, Dept Neurol, Pittsburgh, PA 15261 USA.
[Tsao, Jack W.] USN, Bur Med & Surg, Falls Church, VA USA.
[Levine, Steven R.] Suny Downstate Med Ctr, Dept Neurol, Brooklyn, NY 11203 USA.
[Levine, Steven R.] Suny Downstate Med Ctr, Downstate Stroke Ctr, Brooklyn, NY 11203 USA.
[Swain-Eng, Rebecca J.] Amer Acad Neurol, Minneapolis, MN USA.
[Adams, Robert J.] Med Univ S Carolina, Stroke Ctr, Charleston, SC USA.
[Demaerschalk, Bart M.] Mayo Clin, Dept Neurol, Phoenix, AZ USA.
[Hess, David C.] Georgia Hlth Sci Univ, Augusta, GA USA.
[Moro, Elena] Univ Toronto, Toronto Western Hosp, Div Neurol, Movement Disorders Ctr,UHN, Toronto, ON M5T 2S8, Canada.
[Schwamm, Lee H.] Massachusetts Gen Hosp, Dept Neurol, Boston, MA 02114 USA.
[Steffensen, Steve] Johns Hopkins Univ, Dept Neurol, Baltimore, MD USA.
[Stern, Barney J.] Univ Maryland, Dept Neurol, Baltimore, MD 21201 USA.
[Zuckerman, Steven J.] Neurol Inst, Baton Rouge, LA USA.
[Bhattacharya, Pratik] Wayne State Univ, Sch Med, Dept Neurol, Detroit, MI 48201 USA.
[Davis, Larry E.] New Mexico VA Hlth Care Syst, Albuquerque, NM USA.
[Yurkiewicz, Ilana R.] Harvard Univ, Sch Med, Boston, MA USA.
[Alphonso, Aimee L.] Walter Reed Natl Mil Med Ctr, Bethesda, MD USA.
RP Wechsler, LR (reprint author), Univ Pittsburgh, Sch Med, Dept Neurol, Pittsburgh, PA 15261 USA.
OI Schwamm, Lee/0000-0003-0592-9145
FU Telemedicine; Advanced Technology Research Center, United States Army;
NIH; Arizona Department of Health Services; Athersys, Inc.; Lundbeck;
St. Jude Medical; Medtronic; Remedy Pharmaceuticals
FX L. Wechsler has served as a consultant for Abbott Vascular, Lunbeck, and
Ferrer; is on the Data and Safety Monitoring Board for DIAS 3/4/J and
the steering committee for CLOSURE, ACT I; and owns stock in
Neurointerventional Therapeutics. J. Tsao has received funding from the
Telemedicine and Advanced Technology Research Center, United States
Army, to develop a military neurology telemedicine system. S. Levine has
given expert review and testimony on medical legal cases and has
received research funding from the NIH. R. Swain-Eng is a full-time
employee of the American Academy of Neurology. R. J. Adams is cofounder
of REACHCall Inc., a for-profit telemedicine platform provider. He is
also a co-owner of the company with <5% of outstanding stock. He is
employed by Medical University of South Carolina, which offers
telestroke consultation for fair market value to hospitals in South
Carolina. He also is a speaker for Genentech, which makes tPA, but owns
no stock. B. Demaerschalk has received telemedicine research grant
funding from the Arizona Department of Health Services. Dr. Hess is a
cofounder of REACHCall Inc., a for-profit telemedicine platform
provider. He is also a co-owner of the company with <5% of outstanding
stock. He is employed by Georgia Health Sciences University, which
offers telestroke consultation for fair market value to hospitals in
Georgia. He also has research contracts with Athersys, Inc., and
Lundbeck. E. Moro has received honoraria from Medtronic for consulting
services and speaking. She has received research grant support from St.
Jude Medical and educational grants from Medtronic and St. Jude Medical.
L. Schwamm serves as a consultant to LifeImage, a teleradiology company,
and on the International Steering Committee for the DIAS3/4 trial. His
employer, The Massachusetts General Hospital, offers an array of
telehealth services at fair market value to many area hospitals,
including telestroke. He has also given expert review and testimony on
medical legal cases and has received research funding from the NIH on
thrombolysis and HRSA on telemedicine. S. Steffensen reports no
disclosures. B. Stern has received research support from Remedy
Pharmaceuticals per patient research costs and research grants from the
NIH. He has also received compensation for expert witness testimony. S.
Zuckerman and P. Bhattacharya report no disclosures. L. Davis is a part
of the VA Teleneurology group for which the VA pays part of the research
costs for the nursing staff. I. Yurkiewicz and A. Alphonso report no
disclosures. The opinions or assertions contained herein are the private
views of the authors and are not to be construed as official or as
reflecting the views of the Department of the Navy, the Department of
Defense, or the Department of Veterans Affairs. Go to Neurology.org for
full disclosures.
NR 39
TC 28
Z9 28
U1 0
U2 15
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0028-3878
J9 NEUROLOGY
JI Neurology
PD FEB
PY 2013
VL 80
IS 7
BP 670
EP 676
DI 10.1212/WNL.0b013e3182823361
PG 7
WC Clinical Neurology
SC Neurosciences & Neurology
GA 088ZY
UT WOS:000314878500015
PM 23400317
ER
PT J
AU Guo, C
Webb, NJ
Abzug, R
Peck, LR
AF Guo, Chao
Webb, Natalie J.
Abzug, Rikki
Peck, Laura R.
TI Religious Affiliation, Religious Attendance, and Participation in Social
Change Organizations
SO NONPROFIT AND VOLUNTARY SECTOR QUARTERLY
LA English
DT Article
DE religious affiliation; religious attendance; social change; volunteering
for social change; advocacy
ID VOLUNTARY ASSOCIATION PARTICIPATION; NONPROFIT ADVOCACY ORGANIZATIONS;
CIVIC ENGAGEMENT; UNITED-STATES; COMMUNITY; CONGREGATIONS; INTEGRATION;
RESOURCES; AMERICA; WORK
AB How does religion affect an individual's likelihood of volunteering for social change causes? This study reports on findings from an analysis of the 2005 wave of the COPPS supplement to the PSID to examine the effects of religious tradition (affiliation) and religious attendance (religiosity) on social change volunteering. We find that adherents to the more liberal Christian denominations-mainline Protestant and Catholic-are more likely to volunteer with social change organizations than are Evangelicals. We also find that adherents to other minority religions such as Judaism and Buddhism and individuals with no religious belief are all more likely to volunteer with social change organizations than are Evangelicals. We find a positive and significant relationship between religious attendance and social change volunteering, but find little difference in the effect of religious attendance on social change volunteering between Evangelicals and other religious traditions (except for Catholics).
C1 [Guo, Chao] Indiana Univ Purdue Univ, Indianapolis, IN 46202 USA.
[Webb, Natalie J.] USN, Def Resources Management Inst, Postgrad Sch, Monterey, CA USA.
[Abzug, Rikki] Ramapo Coll, Anislield Sch Business, Mahwah, NJ USA.
[Peck, Laura R.] Abt Associates Inc, Social & Econ Policy Div, Bethesda, MD USA.
RP Guo, C (reprint author), Indiana Univ, Sch Publ & Environm Affairs, IUPUI, 801 W Michigan St, Indianapolis, IN 46202 USA.
EM chaoguo@iupui.edu
NR 64
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Z9 7
U1 2
U2 23
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0899-7640
J9 NONPROF VOLUNT SEC Q
JI Nonprofit Volunt. Sect. Q.
PD FEB
PY 2013
VL 42
IS 1
BP 34
EP 58
DI 10.1177/0899764012473385
PG 25
WC Social Issues
SC Social Issues
GA 083MU
UT WOS:000314469300003
ER
PT J
AU Lacey, BW
Lin, A
AF Lacey, Brent W.
Lin, Andrew
TI Radiologic Evaluation of Right Ventricular Outflow Tract Myxomas
SO TEXAS HEART INSTITUTE JOURNAL
LA English
DT Article
DE Heart neoplasms; magnetic resonance imaging; myxoma/diagnosis/surgery;
tomography, X-ray computed; ventricular outflow tract, right
ID RESECTION
AB A 22-year-old man was referred for palpitations. On transthoracic echocardiography, he was found to have a right ventricular outflow tract mass. Further cardiac imaging was conducted by means of transesophageal echocardiography, computed tomography, and cardiac magnetic resonance. Complete surgical resection of the tumor was achieved, and pathologic examination revealed the lesion to be a myxoma.
Cardiac tumors located in the right ventricular outflow tract are rare and can present unusual diagnostic and therapeutic challenges. Cardiac computed tomography and magnetic resonance are becoming more widely available and can be useful adjuncts in the management of such tumors. (Tex Heart Inst J 2013;40(1):68-70)
C1 [Lacey, Brent W.] USN, Med Ctr, Dept Internal Med, San Diego, CA 92134 USA.
[Lin, Andrew] USN, Med Ctr, Dept Cardiol, San Diego, CA 92134 USA.
RP Lacey, BW (reprint author), USN, San Diego Med Ctr, 34800 Bob Wilson Dr, San Diego, CA 92134 USA.
EM brent.lacey@med.navy.mil
NR 5
TC 1
Z9 1
U1 0
U2 1
PU TEXAS HEART INST
PI HOUSTON
PA PO BOX 20345, HOUSTON, TX 77225-0345 USA
SN 0730-2347
J9 TEX HEART I J
JI Tex. Heart Inst. J.
PD FEB
PY 2013
VL 40
IS 1
BP 68
EP 70
PG 3
WC Cardiac & Cardiovascular Systems
SC Cardiovascular System & Cardiology
GA 090ZF
UT WOS:000315017800015
PM 23466872
ER
PT J
AU Maroules, CD
Adams, DZ
Whiting, ED
Antevil, JL
Mitchell, ES
AF Maroules, Christopher D.
Adams, Daniel Z.
Whiting, Eric D.
Antevil, Jared L.
Mitchell, Eric S.
TI Anomalous Origin of the Right Coronary Artery from the Pulmonary Artery
Evaluation with Use of 64-Slice Multidetector Computed Tomography
SO TEXAS HEART INSTITUTE JOURNAL
LA English
DT Article
C1 [Adams, Daniel Z.; Antevil, Jared L.] USN, Dept Cardiothorac Surg, Med Ctr, Portsmouth, VA 23708 USA.
[Maroules, Christopher D.; Whiting, Eric D.] USN, Dept Radiol, Med Ctr Portsmouth, Portsmouth, VA 23708 USA.
[Mitchell, Eric S.] USN, Dept Cardiol, Med Ctr, Portsmouth, VA 23708 USA.
RP Maroules, CD (reprint author), USN, Dept Radiol, Med Ctr Portsmouth, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
EM Christopher.Maroules@gmail.com
FU United States Navy
FX The views expressed in this article are those of the authors and do not
necessarily reflect the official policy or position of the Department of
the Navy, Department of Defense, or the United States government. All
financial support for this study was provided by the United States Navy.
NR 5
TC 3
Z9 3
U1 0
U2 1
PU TEXAS HEART INST
PI HOUSTON
PA PO BOX 20345, HOUSTON, TX 77225-0345 USA
SN 0730-2347
J9 TEX HEART I J
JI Tex. Heart Inst. J.
PD FEB
PY 2013
VL 40
IS 1
BP 106
EP 108
PG 3
WC Cardiac & Cardiovascular Systems
SC Cardiovascular System & Cardiology
GA 090ZF
UT WOS:000315017800026
PM 23468587
ER
PT J
AU Kollman, C
Klein, JP
Spellman, SR
Hassebroek, A
Confer, D
Fernandez-Vina, M
Hartzman, R
Hurley, CK
Maiers, M
Mueller, CR
Setterholm, M
Woolfrey, A
Yu, N
Eapen, M
AF Kollman, Craig
Klein, John P.
Spellman, Stephen R.
Hassebroek, Anna
Confer, Dennis
Fernandez-Vina, Marcelo
Hartzman, Robert
Hurley, Carolyn Katovich
Maiers, Martin
Mueller, Carlheinz R.
Setterholm, Michelle
Woolfrey, Ann
Yu, Neng
Eapen, Mary
TI The Effect of Donor Characteristics On Graft Vs. Host Disease (GVHD) and
Survival After Unrelated Donor Transplantation for Hematologic
Malignancy
SO BIOLOGY OF BLOOD AND MARROW TRANSPLANTATION
LA English
DT Meeting Abstract
CT BMT Tandem Meetings
CY FEB 13-17, 2013
CL Salt Lake City, UT
C1 [Kollman, Craig] Jaeb Ctr Hlth Res, Tampa, FL USA.
[Klein, John P.] Med Coll Wisconsin, Milwaukee, WI 53226 USA.
[Spellman, Stephen R.] CIBMTR, Minneapolis, MN USA.
[Hassebroek, Anna] CIBMTR Minneapolis, Minneapolis, MN USA.
[Confer, Dennis] CIBMTR Natl Marrow Donor Program, Minneapolis, MN USA.
[Fernandez-Vina, Marcelo] Stanford Univ, Sch Med, Palo Alto, CA 94304 USA.
[Hartzman, Robert] USN, Bone Marrow Res Directorate, Med Res Ctr, Rockville, MD USA.
[Hurley, Carolyn Katovich] Georgetown Univ, Washington, DC USA.
[Maiers, Martin] Natl Marrow Donor Program, Minneapolis, MN USA.
[Mueller, Carlheinz R.] ZKRD Zent Knochenmarkspender Register Deutschland, Ulm, Germany.
[Setterholm, Michelle] Natl Marrow Donor Program, Sci Serv, Minneapolis, MN USA.
[Woolfrey, Ann] Fred Hutchinson Canc Res Ctr, Seattle, WA USA.
[Yu, Neng] Amer Red Cross, HLA Lab, Dedham, MA USA.
[Eapen, Mary] Med Coll Wisconsin, CIBMTR, Milwaukee, WI 53226 USA.
NR 0
TC 2
Z9 2
U1 3
U2 4
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1083-8791
J9 BIOL BLOOD MARROW TR
JI Biol. Blood Marrow Transplant.
PD FEB
PY 2013
VL 19
IS 2
SU 2
MA 67
BP S146
EP S147
PG 2
WC Hematology; Immunology; Transplantation
SC Hematology; Immunology; Transplantation
GA 083DC
UT WOS:000314441900068
ER
PT J
AU Hendricks, AM
Amara, J
Baker, E
Charns, MP
Gardner, JA
Iverson, KM
Kimerling, R
Krengel, M
Meterko, M
Pogoda, TK
Stolzmann, KL
Lew, HL
AF Hendricks, Ann M.
Amara, Jomana
Baker, Errol
Charns, Martin P.
Gardner, John A.
Iverson, Katherine M.
Kimerling, Rachel
Krengel, Maxine
Meterko, Mark
Pogoda, Terri K.
Stolzmann, Kelly L.
Lew, Henry L.
TI Screening for mild traumatic brain injury in OEF-OIF deployed US
military: An empirical assessment of VHA's experience
SO BRAIN INJURY
LA English
DT Article
DE Afghanistan; blast injuries; brain injuries; depression; Iraq; non-blast
injuries; post-traumatic stress disorder; screening; Veterans
ID POSTTRAUMATIC-STRESS-DISORDER; PERSISTENT POSTCONCUSSIVE SYMPTOMS;
POLYTRAUMA CLINICAL TRIAD; MENTAL-HEALTH PROBLEMS; VETERANS; IRAQ;
AFGHANISTAN; CARE; TBI; CHALLENGES
AB Background: VHA screens for traumatic brain injury (TBI) among patients formerly deployed to Afghanistan or Iraq, referring those who screen positive for a Comprehensive TBI Evaluation (CTBIE).
Methods: To assess the programme, rates were calculated of positive screens for potential TBI in the population of patients screened in VHA between October 2007 through March 2009. Rates were derived of TBI confirmed by comprehensive evaluations from October 2008 through July 2009. Patient characteristics were obtained from Department of Defense and VHA administrative data.
Results: In the study population, 21.6% screened positive for potential TBI and 54.6% of these had electronic records of a CTBIE. Of those with CTBIE records, evaluators confirmed TBI in 57.7%, yielding a best estimate that 6.8% of all those screened were confirmed to have TBI. Three quarters of all screened patients and virtually all those evaluated (whether TBI was confirmed or not) had VHA care the following year.
Conclusions: VHA's TBI screening process is inclusive and has utility in referring patients with current symptoms to appropriate care. More than 90% of those evaluated received further VHA care and confirmatory evaluations were associated with significantly higher average utilization. Generalizability is limited to those who seek VHA healthcare.
C1 [Hendricks, Ann M.; Baker, Errol; Charns, Martin P.; Gardner, John A.; Iverson, Katherine M.; Krengel, Maxine; Meterko, Mark; Pogoda, Terri K.; Stolzmann, Kelly L.] VA Boston Healthcare Syst, Boston, MA 02130 USA.
[Hendricks, Ann M.; Charns, Martin P.; Meterko, Mark; Pogoda, Terri K.] Boston Univ, Sch Publ Hlth, Boston, MA USA.
[Amara, Jomana] USN, Postgrad Sch, DRMI, Monterey, CA USA.
[Iverson, Katherine M.; Krengel, Maxine] Boston Univ, Sch Med, Boston, MA 02118 USA.
[Kimerling, Rachel] VA Palo Alto Hlth Care Syst, Menlo Pk, CA USA.
[Lew, Henry L.] Def & Vet Brain Injury Ctr, Richmond, VA USA.
[Lew, Henry L.] Univ Hawaii Manoa, Honolulu, HI 96822 USA.
RP Hendricks, AM (reprint author), VA Boston Healthcare Syst, 150 S Huntington Ave,152 H, Boston, MA 02130 USA.
EM ahendricksphd@gmail.com
OI Charns, Martin/0000-0002-7102-5331; Krengel, Maxine/0000-0001-7632-590X;
Kimerling, Rachel/0000-0003-0996-4212
FU Office of Research and Development, Health Services R&D Service,
Department of Veterans Affairs [SDR 08-405]
FX This paper is based on work supported by the Office of Research and
Development, Health Services R&D Service, Department of Veterans
Affairs, through SDR 08-405. The opinions expressed in this article are
the authors' and do not reflect those of the Department of Veterans
Affairs, the Veterans Health Administration, Health Services Research
and Development, the Defense and Veterans Brain Injury Center or the
Department of Defense. We thank Douglas Bidelspach, David Cifu, Carlos
Tun and three anonymous reviewers for comments on prior versions of this
paper.
NR 41
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U1 1
U2 11
PU INFORMA HEALTHCARE
PI LONDON
PA TELEPHONE HOUSE, 69-77 PAUL STREET, LONDON EC2A 4LQ, ENGLAND
SN 0269-9052
J9 BRAIN INJURY
JI Brain Inj.
PD FEB
PY 2013
VL 27
IS 2
BP 125
EP 134
DI 10.3109/02699052.2012.729284
PG 10
WC Neurosciences; Rehabilitation
SC Neurosciences & Neurology; Rehabilitation
GA 083PX
UT WOS:000314478500001
PM 23384211
ER
PT J
AU Cowart, JS
Fischer, WP
Hamilton, LJ
Caton, PA
Sarathy, SM
Pitz, WJ
AF Cowart, Jim S.
Fischer, Warren P.
Hamilton, Leonard J.
Caton, Patrick A.
Sarathy, S. Mani
Pitz, William J.
TI An experimental and modeling study investigating the ignition delay in a
military diesel engine running hexadecane (cetane) fuel
SO INTERNATIONAL JOURNAL OF ENGINE RESEARCH
LA English
DT Article
DE Diesel; engine; fuel; ignition delay; hexadecane; cetane; combustion
kinetics
ID HYDROCARBONS
AB In an effort aimed at predicting the combustion behavior of a new fuel in a conventional diesel engine, cetane (n-hexadecane) fuel was used in a military engine across the entire speed-load operating range. The ignition delay was characterized for this fuel at each operating condition. A chemical ignition delay was also predicted across the speed-load range using a detailed chemical kinetic mechanism with a constant pressure reactor model. At each operating condition, the measured in-cylinder pressure and predicted temperature at the start of injection were applied to the detailed n-hexadecane kinetic mechanism, and the chemical ignition delay was predicted without any kinetic mechanism calibration. The modeling results show that fuel-air parcels developed from the diesel spray with an equivalence ratio of 4 are the first to ignite. The chemical ignition delay results also showed decreasing igntion delays with increasing engine load and speed, just as the experimental data revealed. At lower engine speeds and loads, the kinetic modeling results show the characteristic two-stage negative temperature coefficient behavior of hydrocarbon fuels. However, at high engine speeds and loads, the reactions do not display negative temperature coefficient behavior, as the reactions proceed directly into high-temperature pathways due to higher temperatures and pressure at injection. A moderate difference between the total and chemical ignition delays was then characterized as a phyical delay period that scales inversely with engine speed. This physical delay time is representative of the diesel spray development time and is seen to become a minority fraction of the total igntion delay at higher engine speeds. The approach used in this study suggests that the ignition delay and thus start of combustion may be predicted with reasonable accuracy using kinetic modeling to determine the chemical igntion delay. Then, in conjunction with the physical delay time (experimental or modeling based), a new fuel's acceptability in a conventional engine could be assessed by determining that the total ignition delay is not too short or too long.
C1 [Cowart, Jim S.; Fischer, Warren P.; Hamilton, Leonard J.; Caton, Patrick A.] USN Acad, Annapolis, MD 21402 USA.
[Sarathy, S. Mani; Pitz, William J.] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Cowart, JS (reprint author), USN Acad, 121 Blake Rd, Annapolis, MD 21402 USA.
EM cowart@usna.edu
RI Sarathy, S. Mani/M-5639-2015
OI Sarathy, S. Mani/0000-0002-3975-6206
FU Office of Naval Research
FX This research was funded by the Office of Naval Research.
NR 18
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U1 0
U2 8
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1468-0874
J9 INT J ENGINE RES
JI Int. J. Engine Res.
PD FEB
PY 2013
VL 14
IS 1
BP 57
EP 67
DI 10.1177/1468087412446884
PG 11
WC Thermodynamics; Engineering, Mechanical; Transportation Science &
Technology
SC Thermodynamics; Engineering; Transportation
GA 088LQ
UT WOS:000314836400006
ER
PT J
AU Shimada, M
Berjohn, C
Tanen, DA
AF Shimada, Mai
Berjohn, Catherine
Tanen, David A.
TI ASCITES AS THE INITIAL PRESENTATION OF GASTROINTESTINAL CARCINOMA
SO JOURNAL OF EMERGENCY MEDICINE
LA English
DT Article
DE ascites; malignancy; gastrointestinal carcinoma; weight loss; abdominal
pain
ID ABDOMINAL PARACENTESIS; MALIGNANT ASCITES; MANAGEMENT; DIAGNOSIS;
CIRRHOSIS
AB Background: The rapid development of ascites in a patient without known liver disease is an uncommon occurrence in the Emergency Department. Initial stabilization may include therapeutic peritoneal lavage to reduce diaphragmatic pressure and halt the progression of respiratory compromise. In the absence of liver disease, the differential diagnosis should include a search for malignancy, which has been reported to account for up to 10% of all cases of newly diagnosed ascites. Objectives: To discuss the differential diagnosis, evaluation, and treatment options associated with the development of acute malignant ascites. Case Report: We report the case of an 86-year-old woman who presented with the chief complaint of an enlarging abdomen and worsening shortness of breath of 1 week's duration. Bedside ultrasound rapidly revealed a large amount of intraperitoneal free fluid as a cause for her abdominal distension and respiratory compromise. Laboratory analysis of her blood along with computed tomography scan of her abdomen and pelvis were unremarkable. Diagnostic and therapeutic peritoneal lavage was done and the patient's symptoms improved. Pathologic examination of the peritoneal fluid revealed metastatic gastrointestinal carcinoma. Conclusion: Rapidly progressing ascites may be the sole presenting symptom of metastatic gastrointestinal carcinoma. (c) 2013 Published by Elsevier Inc.
C1 [Shimada, Mai] Univ Tokyo, Sch Med, Tokyo 113, Japan.
[Berjohn, Catherine; Tanen, David A.] USN, Med Ctr, San Diego, CA 92134 USA.
RP Tanen, DA (reprint author), USN, Med Ctr, Dept Emergency Med, 32800 Bob Wilson Dr, San Diego, CA 92134 USA.
NR 15
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 0736-4679
J9 J EMERG MED
JI J. Emerg. Med.
PD FEB
PY 2013
VL 44
IS 2
BP E195
EP E198
DI 10.1016/j.jemermed.2012.02.060
PG 4
WC Emergency Medicine
SC Emergency Medicine
GA 086EC
UT WOS:000314665400013
PM 22766406
ER
PT J
AU McGray, CD
Stavis, SM
Giltinan, J
Eastman, E
Firebaugh, S
Piepmeier, J
Geist, J
Gaitan, M
AF McGray, Craig D.
Stavis, Samuel M.
Giltinan, Joshua
Eastman, Eric
Firebaugh, Samara
Piepmeier, Jenelle
Geist, Jon
Gaitan, Michael
TI MEMS Kinematics by Super-Resolution Fluorescence Microscopy
SO JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
LA English
DT Article
DE Fluorescence microscopy; kinematics; MEMS; scratch drive;
super-resolution
ID SCRATCH DRIVE ACTUATOR; INPLANE; LOCALIZATION; RESOLUTION; MOTION;
REGISTRATION; NANOSCALE; DEVICES; SYSTEM; WEAR
AB Super-resolution fluorescence microscopy is used for the first time to study the nanoscale kinematics of a MEMS device in motion across a surface. A device under test is labeled with fluorescent nanoparticles that form amicroscale constellation of near-ideal point sources of light. The constellation is imaged by widefield epifluorescence microscopy, and the image of each nanoparticle is fit to a Gaussian distribution to calculate its position. Translations and rotations of the device are measured by computing the rigid transform that best maps the constellation from one image to the next. This technique is used to measure the stepwise motion of a scratch drive actuator across each of 500 duty cycles with 0.13-nm localization precision, 1.85-nm displacement uncertainty, and 100-mu rad orientation uncertainty for a constellation diameter of 15 mu m. This novel measurement reveals acute aperiodic variations in the step size of the actuator, which have been neither previously observed nor predicted by any of the published models of the operation of the device. These unexpected results highlight the importance of super-resolution fluorescence microscopy to the measurement of MEMS kinematics, which will have broad impact in fundamental investigations of surface forces, wear, and tribology in MEMS and related applications.
C1 [McGray, Craig D.; Stavis, Samuel M.; Geist, Jon; Gaitan, Michael] NIST, Semicond & Dimens Metrol Div, Gaithersburg, MD 20899 USA.
[Giltinan, Joshua] Towson Univ, Towson, MD 21252 USA.
[Giltinan, Joshua] NIST, Gaithersburg, MD 20899 USA.
[Eastman, Eric; Firebaugh, Samara; Piepmeier, Jenelle] USN Acad, Annapolis, MD 21402 USA.
RP McGray, CD (reprint author), NIST, Semicond & Dimens Metrol Div, Gaithersburg, MD 20899 USA.
EM craig.mcgray@nist.gov
OI Geist, Jon/0000-0001-7749-318X
FU Physical Measurement Laboratory; Center for Nanoscale Science and
Technology at the National Institute of Standards and Technology; U.S.
Naval Academy; American Recovery and Reinvestment Act
FX This work was supported in part by the Physical Measurement Laboratory
and the Center for Nanoscale Science and Technology at the National
Institute of Standards and Technology, in part by the U.S. Naval
Academy, and in part by the American Recovery and Reinvestment Act.
Subject Editor C. Rembe.
NR 39
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U1 1
U2 46
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1057-7157
J9 J MICROELECTROMECH S
JI J. Microelectromech. Syst.
PD FEB
PY 2013
VL 22
IS 1
BP 115
EP 123
DI 10.1109/JMEMS.2012.2216506
PG 9
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Instruments & Instrumentation; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Instruments &
Instrumentation; Physics
GA 086YT
UT WOS:000314726900017
ER
PT J
AU Abreu, F
Sousa, AA
Aronova, MA
Kim, Y
Cox, D
Leapman, RD
Andrade, LR
Kachar, B
Bazylinski, DA
Lins, U
AF Abreu, Fernanda
Sousa, Alioscka A.
Aronova, Maria A.
Kim, Youngchan
Cox, Daniel
Leapman, Richard D.
Andrade, Leonardo R.
Kachar, Bechara
Bazylinski, Dennis A.
Lins, Ulysses
TI Cryo-electron tomography of the magnetotactic vibrio Magnetovibrio
blakemorei: Insights into the biomineralization of prismatic
magnetosomes
SO JOURNAL OF STRUCTURAL BIOLOGY
LA English
DT Article
DE Magnetosome; Magnetotactic bacteria; Cryo-electron tomography;
Biomineralization
ID MAGNETOSPIRILLUM-GRYPHISWALDENSE; GENE CLUSTERS; CELL BIOLOGY; PROTEIN
MAMK; BACTERIA; CRYSTALS; ACTIN; MEMBRANE; PROKARYOTES; BIOGENESIS
AB We examined the structure and biomineralization of prismatic magnetosomes in the magnetotactic marine vibrio Magnetovibrio blakemorei strain MV-1 and a non-magnetotactic mutant derived from it, using a combination of cryo-electron tomography and freeze-fracture. The vesicles enveloping the Magnetovibrio magnetosomes were elongated and detached from the cell membrane. Magnetosome crystal formation appeared to be initiated at a nucleation site on the membrane inner surface. Interestingly, while scattered filaments were observed in the surrounding cytoplasm, their association with the magnetosome chains could not be unequivocally established. Our data suggest fundamental differences between prismatic and octahedral magnetosomes in their mechanisms of nucleation and crystal growth as well as in their structural relationships with the cytoplasm and plasma membrane. (C) 2012 Elsevier Inc. All rights reserved.
C1 [Abreu, Fernanda; Lins, Ulysses] Univ Fed Rio de Janeiro, CCS, Inst Microbiol Paulo de Goes, BR-21941590 Rio De Janeiro, RJ, Brazil.
[Sousa, Alioscka A.; Aronova, Maria A.; Cox, Daniel; Leapman, Richard D.] Natl Inst Biomed Imaging & Bioengn, NIH, Bethesda, MD 20892 USA.
[Kim, Youngchan] USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
[Andrade, Leonardo R.] Univ Fed Rio de Janeiro, CCS, Inst Ciencias Biomed, BR-21941590 Rio De Janeiro, RJ, Brazil.
[Andrade, Leonardo R.; Kachar, Bechara] Natl Inst Deafness & Other Commun Disorders, Lab Cell Struct & Dynam, NIH, Bethesda, MD 20892 USA.
[Bazylinski, Dennis A.] Univ Nevada, Sch Life Sci, Las Vegas, NV 89154 USA.
RP Lins, U (reprint author), Univ Fed Rio de Janeiro, Inst Microbiol, Ctr Ciencias Saude, Bloco 1,Ave Carlos Chagas Filho 373, BR-21941902 Rio de Janeiro, RJ, Brazil.
EM ulins@micro.ufrj.br
RI Inbeb, Inct/K-2317-2013; Andrade, Leonardo/C-9554-2011; Lins,
Ulysses/N-7282-2015
OI Andrade, Leonardo/0000-0002-0004-5677; Lins, Ulysses/0000-0002-1786-1144
FU CNPq Brazilian agency; FAPERJ Brazilian agency; CAPES Brazilian agency;
US National Science Foundation [EAR-0920718]; Intramural Research
Program of the National Institute of Biomedical Imaging and
Bioengineering, National Institutes of Health
FX UL and FA acknowledge partial financial support from CNPq, FAPERJ and
CAPES Brazilian agencies. DAB is supported by US National Science
Foundation grant EAR-0920718. This work was supported in part by the
Intramural Research Program of the National Institute of Biomedical
Imaging and Bioengineering, National Institutes of Health.
NR 36
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U1 0
U2 52
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 1047-8477
J9 J STRUCT BIOL
JI J. Struct. Biol.
PD FEB
PY 2013
VL 181
IS 2
BP 162
EP 168
DI 10.1016/j.jsb.2012.12.002
PG 7
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 085PV
UT WOS:000314627600009
PM 23246783
ER
PT J
AU Bucaro, JA
Lagakos, N
Houston, BH
Dey, S
Zalalutdinov, M
AF Bucaro, J. A.
Lagakos, N.
Houston, B. H.
Dey, Saikat
Zalalutdinov, M.
TI Compact directional acoustic sensor using a multi-fiber optical probe
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID VELOCITY SENSOR; MICROPHONE; INTENSITY; ARRAYS
AB A compact directional acoustic sensor is described which uses a two-fiber optical probe, a light emitting diode (LED), a photo-diode detector, and a slender cylindrical cantilever to the end of which is attached an optical reflector. Acoustically induced transverse displacement of the cantilever tip modulates the light reflected by it into the collection fiber, which conveys the light to a photo-detector. Directional sensitivity is achieved through the dependence of the collected light on the cosine of the angle between a line through the centers of the two fibers and the cantilever tip displacement (the sound direction). The sensor requires relatively low power, and its LED source has low levels of 1/f noise. These attributes make it a good choice for remote low frequency applications requiring long operating lifetimes. An analytic model of the acoustic response of the cantilever is constructed, which is partially verified using a finite element model and experimentally validated using measurements of the acoustic response in air. The model is used to predict to what extent and over what frequency band that response depends upon the acoustically generated flow (drag) force [Yuan et al., IEEE Sensor J. 8, 1114-1117 (2008)]. (C) 2013 Acoustical Society of America. [http://dx.doi.org/10.1121/1.4773275]
C1 [Bucaro, J. A.] Excet Inc, Springfield, VA 22151 USA.
[Lagakos, N.] Sotera Def Solut, Annapolis Jct, MD 20701 USA.
[Bucaro, J. A.; Lagakos, N.; Houston, B. H.; Dey, Saikat; Zalalutdinov, M.] USN, Res Lab, Washington, DC 20375 USA.
RP Bucaro, JA (reprint author), Excet Inc, 8001 Braddock Rd,Suite 105, Springfield, VA 22151 USA.
EM joseph.bucaro.ctr@nrl.navy.mil
FU Office of Naval Research
FX This research was carried out under support from the Office of Naval
Research.
NR 24
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U1 2
U2 27
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 FEB
PY 2013
VL 133
IS 2
BP 832
EP 841
DI 10.1121/1.4773275
PG 10
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 080TW
UT WOS:000314267200032
PM 23363102
ER
PT J
AU Sarkissian, A
Houston, B
Bucaro, J
Kraus, L
AF Sarkissian, Angie
Houston, Brian
Bucaro, Joseph
Kraus, Larry
TI Near-field to far-field projection algorithm for free-field or buried
scatterer
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
AB A near-field to far-field projection algorithm is applied to a structure in the free-field case and generalized to a buried scatterer. The method of superposition is applied where the scattered field produced by the target may be approximated by the field produced by a number of point sources placed near the target. The source strengths are determined by requiring the field they produce to satisfy boundary conditions on the measurement surface. In the free-field case, the expression of the Green's function is simple. In the buried case, the two-domain Green's function may be expressed as an integral over special functions. Once the source strengths are determined, the far-field is computed as a superposition of the fields produced by the individual sources. The algorithm is tested on numerically generated data. [http://dx.doi.org/10.1121/1.4773860]
C1 [Sarkissian, Angie; Houston, Brian] USN, Res Lab, Washington, DC 20375 USA.
[Bucaro, Joseph] Excet Inc, Springfield, VA 22151 USA.
[Kraus, Larry] Global Strategies Grp, Crofton, MD 20813 USA.
RP Sarkissian, A (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM angie.sarkissian@nrl.navy.mil
FU Office of Naval Research; Strategic Environmental Research and
Development Program
FX This work was supported by The Office of Naval Research and Strategic
Environmental Research and Development Program.
NR 4
TC 0
Z9 0
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
J9 J ACOUST SOC AM
JI J. Acoust. Soc. Am.
PD FEB
PY 2013
VL 133
IS 2
BP 912
EP 917
DI 10.1121/1.4773860
PG 6
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 080TW
UT WOS:000314267200039
PM 23363109
ER
PT J
AU Magann, EF
Lutgendorf, MA
Keiser, SD
Porter, S
Siegel, ER
McKelvey, SA
Morrison, JC
AF Magann, Everett F.
Lutgendorf, Monica A.
Keiser, Sharon D.
Porter, Stephanie
Siegel, Eric R.
McKelvey, Samantha A.
Morrison, John C.
TI Risk Factors for a Prolonged Third Stage of Labor and Postpartum
Hemorrhage
SO SOUTHERN MEDICAL JOURNAL
LA English
DT Article
DE risk factors; postpartum hemorrhage; prolonged third stage of labor
ID POPULATION; DELIVERIES; EPIDEMIOLOGY; MISOPROSTOL; TRIAL
AB Objectives: To determine the effect of a third stage of labor >= 15 minutes on bleeding after delivery and other risk factors for a postpartum hemorrhage (PPH).
Methods: This was a case-control study of women undergoing vaginal delivery with placental delivery >= 15 minutes matched by gestational age to the next delivery with placental delivery <15 minutes. Multiple risk factors were evaluated for association with delayed placenta and with PPH.
Results: There were 226 pregnancies >= 15 minutes (cases) versus 226 whose placental time was <15 minutes (controls). The best-fit model identified placental delivery >= 15 minutes, history of retained placenta, nulliparity, and increased length of first stage of labor as significant factors for PPH.
Conclusions: The best risk model for PPH includes placental delivery >= 15 minutes, history of retained placenta, nulliparity, and longer first stage of labor.
C1 Univ Arkansas, Dept Obstet & Gynecol, Little Rock, AR 72204 USA.
Univ Arkansas, Dept Biostat, Little Rock, AR 72204 USA.
USN, Med Ctr Portsmouth, Portsmouth, VA USA.
Univ Mississippi, Med Ctr, Jackson, MS USA.
Univ Tennessee, Knoxville, TN USA.
RP Morrison, JC (reprint author), Univ Mississippi, Med Ctr, Dept Obstet & Gynecol, 2500 N State St, Jackson, MS 39216 USA.
EM jmorrison@umc.edu
NR 20
TC 4
Z9 4
U1 0
U2 7
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0038-4348
J9 SOUTH MED J
JI South.Med.J.
PD FEB
PY 2013
VL 106
IS 2
BP 131
EP 135
DI 10.1097/SMJ.0b013e3182824d1e
PG 5
WC Medicine, General & Internal
SC General & Internal Medicine
GA 086VG
UT WOS:000314715600003
PM 23380748
ER
PT J
AU Legler, PM
Zabetakis, D
Anderson, GP
Lam, A
Hol, WGJ
Goldman, ER
AF Legler, Patricia M.
Zabetakis, Dan
Anderson, George P.
Lam, Anita
Hol, Wim G. J.
Goldman, Ellen R.
TI Structure of a low-melting-temperature anti-cholera toxin: llama VHH
domain
SO ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY AND CRYSTALLIZATION
COMMUNICATIONS
LA English
DT Article
ID COMPLEMENTARITY-DETERMINING REGIONS; HEAVY-CHAIN ANTIBODIES; FRAGMENTS;
AGGREGATION; STABILITY; COOT
AB Variable heavy domains derived from the heavy-chain-only antibodies found in camelids (VHH domains) are known for their thermal stability. Here, the structure of A9, an anti-cholera toxin VHH domain (K-d = 77 +/- 5 nM) that has an unusually low melting temperature of 319.9 +/- 1.6 K, is reported. The CDR3 residues of A9 form a beta-hairpin that is directed away from the former V-H-V-L interfacial surface, exposing hydrophobic residues to the solvent. A DALI structural similarity search showed that this CDR3 conformation is uncommon.
C1 [Legler, Patricia M.; Zabetakis, Dan; Anderson, George P.; Goldman, Ellen R.] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
[Lam, Anita; Hol, Wim G. J.] Univ Washington, Seattle, WA 98195 USA.
RP Legler, PM (reprint author), USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
EM patricia.legler@nrl.navy.mil
RI Anderson, George/D-2461-2011
OI Anderson, George/0000-0001-7545-9893
FU US Defense Threat Reduction Agency JSTO [CBCALL12-LS6-2-0036]
FX We thank Stewart Turley for assistance with X-ray data collection. This
work was funded in part by the US Defense Threat Reduction Agency JSTO
award CBCALL12-LS6-2-0036. Disclaimer: The opinions or assertions
contained herein belong to the authors and are not necessarily the
official views of the US Navy or the US Department of Defense.
NR 29
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U1 0
U2 17
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1744-3091
J9 ACTA CRYSTALLOGR F
JI Acta Crystallogr. F-Struct. Biol. Cryst. Commun.
PD FEB
PY 2013
VL 69
BP 90
EP 93
DI 10.1107/S1744309112050750
PN 2
PG 4
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Biophysics; Crystallography
SC Biochemistry & Molecular Biology; Biophysics; Crystallography
GA 083MB
UT WOS:000314467200003
PM 23385744
ER
PT J
AU Hammond, JE
Bryant, B
AF Hammond, James E.
Bryant, Brandon
TI Biceps Adhesion to the Rotator Cuff A Case Report
SO AMERICAN JOURNAL OF SPORTS MEDICINE
LA English
DT Article
DE SLAP; biceps; shoulder; arthroscopy
ID LONG HEAD; PROXIMAL BICEPS; TENDON; MANAGEMENT; ORIGIN
C1 [Hammond, James E.; Bryant, Brandon] Naval Med Ctr Portsmouth, Dept Orthopaed Surg, Bone & Joint Sports Med Inst, Portsmouth, VA 23708 USA.
RP Hammond, JE (reprint author), Naval Med Ctr Portsmouth, Dept Orthopaed Surg, Bone & Joint Sports Med Inst, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
EM shoulderfixr@gmail.com
NR 10
TC 1
Z9 1
U1 0
U2 3
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0363-5465
J9 AM J SPORT MED
JI Am. J. Sports Med.
PD FEB
PY 2013
VL 41
IS 2
BP 302
EP 305
DI 10.1177/0363546512471182
PG 4
WC Orthopedics; Sport Sciences
SC Orthopedics; Sport Sciences
GA 081GY
UT WOS:000314307500012
PM 23263295
ER
PT J
AU Wong, JH
Peterson, MS
AF Wong, Jason H.
Peterson, Matthew S.
TI What we remember affects how we see: Spatial working memory steers
saccade programming
SO ATTENTION PERCEPTION & PSYCHOPHYSICS
LA English
DT Article
DE Attention and memory; Eye movements and visual attention
ID VISUAL-ATTENTION; EYE-MOVEMENTS; DIRECTING ATTENTION; OCULOMOTOR
CAPTURE; PREMOTOR THEORY; TIME-COURSE; INHIBITION; REHEARSAL;
MAINTENANCE; ALLOCATION
AB Relationships between visual attention, saccade programming, and visual working memory have been hypothesized for over a decade. Awh, Jonides, and Reuter-Lorenz (Journal of Experimental Psychology: Human Perception and Performance 24(3):780-90, 1998) and Awh et al. (Psychological Science 10(5):433-437, 1999) proposed that rehearsing a location in memory also leads to enhanced attentional processing at that location. In regard to eye movements, Belopolsky and Theeuwes (Attention, Perception & Psychophysics 71(3):620-631, 2009) found that holding a location in working memory affects saccade programming, albeit negatively. In three experiments, we attempted to replicate the findings of Belopolsky and Theeuwes (Attention, Perception & Psychophysics 71(3):620-631, 2009) and determine whether the spatial memory effect can occur in other saccade-cuing paradigms, including endogenous central arrow cues and exogenous irrelevant singletons. In the first experiment, our results were the opposite of those in Belopolsky and Theeuwes (Attention, Perception & Psychophysics 71(3):620-631, 2009), in that we found facilitation (shorter saccade latencies) instead of inhibition when the saccade target matched the region in spatial working memory. In Experiment 2, we sought to determine whether the spatial working memory effect would generalize to other endogenous cuing tasks, such as a central arrow that pointed to one of six possible peripheral locations. As in Experiment 1, we found that saccade programming was facilitated when the cued location coincided with the saccade target. In Experiment 3, we explored how spatial memory interacts with other types of cues, such as a peripheral color singleton target or irrelevant onset. In both cases, the eyes were more likely to go to either singleton when it coincided with the location held in spatial working memory. On the basis of these results, we conclude that spatial working memory and saccade programming are likely to share common overlapping circuitry.
C1 [Wong, Jason H.; Peterson, Matthew S.] George Mason Univ, Dept Psychol, Fairfax, VA 22030 USA.
[Wong, Jason H.] USN, Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Wong, JH (reprint author), USN, Undersea Warfare Ctr, Bldg 1171-2,1176 Howell St, Newport, RI 02841 USA.
EM jason.h.wong@navy.mil
FU Department of Defense SMART scholarship
FX The authors thank our lab members for helpful comments on the manuscript
and, in particular, Allison Sleeman, Bobby Azarian, Eric Blumberg, and
Melissa Smith for their help with Experiments 1 and 2. This work was
adapted from a portion of J. H. Wong's doctoral dissertation and was
funded by a Department of Defense SMART scholarship to J. H. Wong.
Correspondence concerning this article should be addressed to Jason H.
Wong, Naval Undersea Warfare Center, Building 1171/2, Newport, RI 02841
(email: jason.h.wong@navy.mil).
NR 31
TC 1
Z9 1
U1 0
U2 30
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1943-3921
J9 ATTEN PERCEPT PSYCHO
JI Atten. Percept. Psychophys.
PD FEB
PY 2013
VL 75
IS 2
BP 308
EP 321
DI 10.3758/s13414-012-0388-7
PG 14
WC Psychology; Psychology, Experimental
SC Psychology
GA 081BX
UT WOS:000314291700009
PM 23093301
ER
PT J
AU Yang, JH
Kennedy, Q
Sullivan, J
Fricker, RD
AF Yang, Ji Hyun
Kennedy, Quinn
Sullivan, Joseph
Fricker, Ronald D., Jr.
TI Pilot Performance: Assessing How Scan Patterns & Navigational
Assessments Vary by Flight Expertise
SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE
LA English
DT Article
DE expertise; scan strategy; cognition; subjective assessment
ID DECISION-MAKING
AB YANG JH, KENNEDY Q, SULLIVAN J, FRICKER Jr RD. Pilot performance: assessing how scan patterns & navigational assessments vary by flight expertise. Aviat Space Environ Med 2013; 84:116-24. Introduction: Helicopter overland navigation is a cognitively complex task that requires continuous monitoring of system and environmental parameters and many hours of training to master. This study investigated the effect of expertise on pilots' gaze measurements, navigation accuracy, and subjective assessment of their navigation accuracy in overland navigation on easy and difficult routes. Methods: A simulated overland task was completed by 12 military officers who ranged in flight experience as measured by total flight hours (TFH). They first studied a map of a route that included both easy and difficult route sections, and then had to 'fly' this simulated route in a fixed-base helicopter simulator. They also completed pre-task estimations and post-task assessments of the navigational difficulty of the transit to each waypoint in the route. Their scan pattern was tracked via eye tracking systems, which captured both the subject's out-the-window (OTW) and topographical map scan data. Results: TFH was not associated with navigation accuracy or root mean square (RMS) error for any route section. For the easy routes, experts spent less time scanning out the window (rho = -0.61) and had shorter OTW dwell (rho = -0.66). For the difficult routes, experts appeared to slow down their scan by spending as much time scanning out the window as the novices while also having fewer Map fixations (rho = -0.65) and shorter OTW dwell (rho = -0.69). However, TFH was not significantly correlated with more accurate estimates of route difficulty. Discussion: This study found that TFH did not predict navigation accuracy or subjective assessment, but was correlated with some gaze parameters.
C1 [Yang, Ji Hyun; Kennedy, Quinn; Sullivan, Joseph; Fricker, Ronald D., Jr.] USN, Postgrad Sch, Monterey, CA 93943 USA.
RP Yang, JH (reprint author), USN, Postgrad Sch, 700 Dyer Rd,Bldg 245,Rm 265, Monterey, CA 93943 USA.
EM jyan1@nps.edu
FU Naval Modeling Simulation Office (NMSO); Office of Naval Research (ONR)
FX This work is funded by the Naval Modeling Simulation Office (NMSO) and
Office of Naval Research (ONR). We are grateful to Noah Lloyd-Edelman
for helping us in calibrating the experimental device and to Michael Day
for providing technical support for the experimental setup.
NR 20
TC 4
Z9 4
U1 0
U2 15
PU AEROSPACE MEDICAL ASSOC
PI ALEXANDRIA
PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 USA
SN 0095-6562
J9 AVIAT SPACE ENVIR MD
JI Aviat. Space Environ. Med.
PD FEB
PY 2013
VL 84
IS 2
BP 116
EP 124
DI 10.3357/ASEM.3372.2013
PG 9
WC Public, Environmental & Occupational Health; Medicine, General &
Internal; Sport Sciences
SC Public, Environmental & Occupational Health; General & Internal
Medicine; Sport Sciences
GA 079VO
UT WOS:000314200500005
PM 23447849
ER
PT J
AU Bartlett, JL
Sessoms, PH
Reini, SA
AF Bartlett, Jamie L.
Sessoms, Pinata H.
Reini, Seth A.
TI Strength Through Science: Using Virtual Technology to Advance the
Warfighter
SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE
LA English
DT Editorial Material
ID TREADMILL WALKING
C1 [Bartlett, Jamie L.; Sessoms, Pinata H.; Reini, Seth A.] USN, Warfighter Performance Dept, Hlth Res Ctr, San Diego, CA 92152 USA.
RP Bartlett, JL (reprint author), USN, Warfighter Performance Dept, Hlth Res Ctr, San Diego, CA 92152 USA.
RI Bartlett, Jamie/B-9756-2014
OI Bartlett, Jamie/0000-0001-7934-7119
NR 5
TC 2
Z9 2
U1 0
U2 1
PU AEROSPACE MEDICAL ASSOC
PI ALEXANDRIA
PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 USA
SN 0095-6562
J9 AVIAT SPACE ENVIR MD
JI Aviat. Space Environ. Med.
PD FEB
PY 2013
VL 84
IS 2
BP 165
EP 166
DI 10.3357/ASEM.3578.2013
PG 2
WC Public, Environmental & Occupational Health; Medicine, General &
Internal; Sport Sciences
SC Public, Environmental & Occupational Health; General & Internal
Medicine; Sport Sciences
GA 079VO
UT WOS:000314200500013
PM 23447856
ER
PT J
AU Boey, YK
Kwon, YW
AF Boey, Y. K.
Kwon, Y. W.
TI Progressive damage and failure strength of notched woven fabric
composites under axial loading with varying strain rates
SO COMPOSITE STRUCTURES
LA English
DT Article
DE Damage and failure; Varying strain rate; Woven fabric composite
ID PARTICULATE COMPOSITES; GLASS/EPOXY COMPOSITES; FIBROUS COMPOSITES;
CIRCULAR HOLE; FRACTURE; BEHAVIOR; CRACK
AB This study investigated the failure of notched and un-notched plain weave composite specimens subjected to varying strain rate loading. Different strain rate axial loads were applied to observe the rate effect on the failure. Both uniform and non-uniform strain rate loads were applied to the notched and un-notched composite specimens, respectively. Notched specimens showed initial cracks at the edge of the hole before final fracture. The initial crack under tensile loading became smaller as the strain rate increased. The initial crack length was predicted using the finite element analysis of the non-homogeneous, micromechanics-based model. The predicted length agreed well with the experimental measurement. Application of the initial crack size for the characteristic distance of the Average Stress failure criterion yielded acceptable tensile notch strengths. The compressive notch strength was less sensitive to the tensile notch strength. The non-constant, varying strain rate loading showed that the failure strength and stiffness depend on the history of the applied loading rates. The effects of the varying strain rates on both notched and un-notched specimens were different qualitatively. However, the strength ratios of the notched to un-notched specimens under varying rates were greater than those under constant rates regardless of tensile or compressive loading. Published by Elsevier Ltd.
C1 [Boey, Y. K.; Kwon, Y. W.] USN, Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93940 USA.
RP Kwon, YW (reprint author), USN, Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93940 USA.
EM ywkwon@nps.edu
NR 22
TC 3
Z9 4
U1 2
U2 13
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0263-8223
J9 COMPOS STRUCT
JI Compos. Struct.
PD FEB
PY 2013
VL 96
BP 824
EP 832
DI 10.1016/j.compstruct.2012.09.035
PG 9
WC Materials Science, Composites
SC Materials Science
GA 073XR
UT WOS:000313776900080
ER
PT J
AU Porter, CK
Thura, N
Ranallo, RT
Riddle, MS
AF Porter, C. K.
Thura, N.
Ranallo, R. T.
Riddle, M. S.
TI The Shigella human challenge model
SO EPIDEMIOLOGY AND INFECTION
LA English
DT Review
DE Gastrointestinal infections; Shigella; travellers' infection
ID IRRITABLE-BOWEL-SYNDROME; FLEXNERI 2A; CLINICAL-TRIALS; SONNEI VACCINE;
INFECTION; METAANALYSIS; VOLUNTEERS; EFFICACY; IMMUNOGENICITY;
IMMUNIZATION
AB Shigella is an important bacterial cause of infectious diarrhoea globally. The Shigella human challenge model has been used since 1946 for a variety of objectives including understanding disease pathogenesis, human immune responses and allowing for an early assessment of vaccine efficacy. A systematic review of the literature regarding experimental shigellosis in human subjects was conducted. Summative estimates were calculated by strain and dose. While a total of 19 studies evaluating nine strains at doses ranging from 10 to 1 x 10(10) colony-founing units were identified, most studies utilized the S. sonnei strain 53G and the S. flexneri strain 2457T. Inoculum solution and pre-inoculation buffering has varied over time although diarrhoea attack rates do not appear to increase above 75-80%, and dysentery rates remain fairly constant, highlighting the need for additional dose-ranging studies. Expansion of the model to include additional strains from different serotypes will elucidate serotype and strain-specific outcome variability.
C1 [Porter, C. K.] USN, Enter Dis Dept, Infect Dis Directorate, Med Res Ctr, Silver Spring, MD 20910 USA.
[Ranallo, R. T.] Walter Reed Army Inst Res, Dept Live Attenuated Shigella Vaccines, Bacterial Dis Branch, Silver Spring, MD USA.
RP Porter, CK (reprint author), USN, Enter Dis Dept, Infect Dis Directorate, Med Res Ctr, 503 Robert Grant Ave, Silver Spring, MD 20910 USA.
EM chad.porter@med.navy.mil
FU Military Infectious Disease Research Program funding
FX This study was conducted under support of Military Infectious Disease
Research Program funding. The opinions and assertions herein should not
be construed as official or representing the views of the Department of
the Navy, Department of the Army, the Department of Defense, or the U.S.
Government. This is a U.S. Government work. There are no restrictions on
its use.
NR 32
TC 6
Z9 7
U1 1
U2 25
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0950-2688
J9 EPIDEMIOL INFECT
JI Epidemiol. Infect.
PD FEB
PY 2013
VL 141
IS 2
BP 223
EP 232
DI 10.1017/S0950268812001677
PG 10
WC Public, Environmental & Occupational Health; Infectious Diseases
SC Public, Environmental & Occupational Health; Infectious Diseases
GA 077FN
UT WOS:000314013400001
PM 22906296
ER
PT J
AU Augier, M
AF Augier, Mie
TI The early evolution of the foundations for behavioral organization
theory and strategy
SO EUROPEAN MANAGEMENT JOURNAL
LA English
DT Article
DE Organization theory; Strategy; History of management; Behavioral
organization theory; James March; Herbert Simon
ID RATIONAL CHOICE; ECONOMICS
AB While the field(s) of management theory and the history of modern ideas in management, business education and organizations have many different intellectual roots, the Carnegie Mellon Behavioral trio (James March, Herbert Simon and Richard Cyert) who founded the behavioral perspective on organizations stand out not just for their collective contribution to founding the field of organizational behavior as we know it today, but also for their subsequent individual contributions to the field. Organizations and Behavioral Theory of the Firm set the stage for several subsequent developments in organization and management theory including research on learning, strategic management, organizational economics and organizational routines (Gibbons, 2003; Pierce, Boerner & Teece, 2002; Williamson, 2002, 2004; Augier Et Teece, 2005, 2009).
In addition to providing some background on the Carnegie work, this paper traces the genealogy and development of some of the work of the founding fathers, and making the points that (1) while the work of Herbert Simon crossed disciplinary boundaries, he saw himself as doing only one thing, working in understanding limited rationality in decision making and (2) the work of James March shaped the field in a co-evolutionary way since he has been influenced too by the developments in organization studies. (C) 2012 Published by Elsevier Ltd.
C1 [Augier, Mie] USN, Postgrad Sch, Ctr New Secur Econ & Net Assessment, Monterey, CA 94943 USA.
[Augier, Mie] Stanford Grad Sch Business, Stanford, CA 94305 USA.
RP Augier, M (reprint author), Stanford Grad Sch Business, 250 W Fac Bldg, Stanford, CA 94305 USA.
EM meaugier@nps.edu
NR 55
TC 4
Z9 4
U1 2
U2 43
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0263-2373
EI 1873-5681
J9 EUR MANAG J
JI Eur. Manag. J.
PD FEB
PY 2013
VL 31
IS 1
BP 72
EP 81
DI 10.1016/j.emj.2012.11.005
PG 10
WC Business; Management
SC Business & Economics
GA 082IY
UT WOS:000314386700007
ER
PT J
AU Meyer, DJ
Deen, DA
Storm, DF
Ancona, MG
Katzer, DS
Bass, R
Roussos, JA
Downey, BP
Binari, SC
Gougousi, T
Paskova, T
Preble, EA
Evans, KR
AF Meyer, David J.
Deen, David A.
Storm, David F.
Ancona, Mario G.
Katzer, D. Scott
Bass, Robert
Roussos, Jason A.
Downey, Brian P.
Binari, Steven C.
Gougousi, Theodosia
Paskova, Tanya
Preble, Edward A.
Evans, Keith R.
TI High Electron Velocity Submicrometer AlN/GaN MOS-HEMTs on Freestanding
GaN Substrates
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE Atomic layer deposition; AlN; GaN; high-electron-mobility transistors
(HEMTs); HfO2; hydride vapor phase epitaxy (HVPE)
ID INSULATED-GATE HEMTS; ALGAN/GAN HEMTS; RESISTANCE; F(T)
AB AlN/GaN heterostructures with 1700-cm(2)/V . s Hall mobility have been grown by molecular beam epitaxy on freestanding GaN substrates. Submicrometer gate-length (L-G) metal-oxide-semiconductor (MOS) high-electron-mobility transistors (HEMTs) fabricated from this material show excellent dc and RF performance. L-G = 100 nm devices exhibited a drain current density of 1.5 A/mm, current gain cutoff frequency f(T) of 165 GHz, a maximum frequency of oscillation f(max) of 171 GHz, and intrinsic average electron velocity v(e) of 1.5 x 10(7) cm/s. The 40-GHz load-pull measurements of L-G = 140 nm devices showed 1-W/mm output power, with a 4.6-dB gain and 17% power-added efficiency. GaN substrates provide a way of achieving high mobility, high v(e), and high RF performance in AlN/GaN transistors.
C1 [Meyer, David J.; Deen, David A.; Storm, David F.; Ancona, Mario G.; Katzer, D. Scott; Bass, Robert; Roussos, Jason A.; Downey, Brian P.; Binari, Steven C.] USN, Res Lab, Washington, DC 20375 USA.
[Gougousi, Theodosia] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA.
[Paskova, Tanya; Preble, Edward A.; Evans, Keith R.] Kyma Technol, Raleigh, NC 27617 USA.
RP Meyer, DJ (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM david.meyer@nrl.navy.mil; dadeen@umn.edu
RI Paskova, Tanya/D-2203-2009; Katzer, D. Scott/N-7841-2013; Gougousi,
Theodosia/C-8156-2014
FU Office of Naval Research; National Science Foundation [DMR 0846445]
FX This work was supported by the Office of Naval Research with funding
from Dr. P. Maki. The work at the University of Maryland Baltimore
County was supported in part by the National Science Foundation under
Grant DMR 0846445. The review of this letter was arranged by Editor J.
A. del Alamo.
NR 20
TC 21
Z9 22
U1 3
U2 65
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0741-3106
J9 IEEE ELECTR DEVICE L
JI IEEE Electron Device Lett.
PD FEB
PY 2013
VL 34
IS 2
BP 199
EP 201
DI 10.1109/LED.2012.2228463
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA 079LZ
UT WOS:000314173200017
ER
PT J
AU Amin, R
Gould, R
Hou, WL
Arnone, R
Lee, ZP
AF Amin, Ruhul
Gould, Richard
Hou, Weilin
Arnone, Robert
Lee, Zhongping
TI Optical Algorithm for Cloud Shadow Detection Over Water
SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
LA English
DT Article
DE Hyperspectral imagery; ocean color; optical algorithm; remote sensing;
shadow detection
ID AVHRR DATA; ILLUMINATION CONDITIONS; SPATIAL-RESOLUTION; SATELLITE
IMAGERY; REMOVAL; ASSIMILATION; RETRIEVAL; CANADA; MODEL; LAND
AB The application of ocean color product retrieval algorithms for pixels containing cloud shadows leads to erroneous results. Thus, shadows are an important scene type that should be identified and excluded from the set of clear-sky pixels. In this paper, we present an optical cloud shadow-detection technique called the Cloud Shadow Detection Index (CSDI). This approach is for homogeneous water bodies such as deep waters where shadow detection is very challenging due to the relatively small differences in the brightness values of the shadows and neighboring sunlit or some other regions. The CSDI technique is developed based on the small differences between the total radiances reaching the sensor from the shadowed and neighboring sunlit regions of similar optical properties by amplifying the differences through integrating the spectra of the two regions. The Integrated Value (IV) is then normalized by the mean of the IVs within a spatial adaptive sliding box where atmospheric and marine optical properties are assumed homogeneous. Assuming that the true color and the IV images represent accurate shadow locations, the results were visually compared. The CSDI images agree reasonably well with the corresponding true color and the IV images over open ocean. Also, the shape of the cloud shadow particularly for the isolated cloud closely follows that of the cloud, as expected, reconfirming the potential of the CSDI technique.
C1 [Amin, Ruhul; Gould, Richard; Hou, Weilin; Arnone, Robert] USN, Res Lab, Stennis Space Ctr, Stennis Space Ctr, MS 39529 USA.
[Lee, Zhongping] Univ Massachusetts, Dept Environm Earth & Ocean Sci, Boston, MA 02125 USA.
RP Amin, R (reprint author), USN, Res Lab, Stennis Space Ctr, Code 7333, Stennis Space Ctr, MS 39529 USA.
EM ruhul.amin@nrlssc.navy.mil; gould@nrlssc.navy.mil;
wilin.hou@nrlssc.navy.mil; arnone@nrlssc.navy.mil; zhongping.lee@umb.edu
FU U.S. Naval Research Laboratory [PE0602435N]
FX This work was supported by the U.S. Naval Research Laboratory Program
Element PE0602435N "Realizing the Naval Scientific Return of HICO."
NR 37
TC 4
Z9 4
U1 3
U2 44
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0196-2892
J9 IEEE T GEOSCI REMOTE
JI IEEE Trans. Geosci. Remote Sensing
PD FEB
PY 2013
VL 51
IS 2
BP 732
EP 741
DI 10.1109/TGRS.2012.2204267
PG 10
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
& Photographic Technology
GA 077HW
UT WOS:000314019500002
ER
PT J
AU Ardhuin, F
Herbers, THC
AF Ardhuin, Fabrice
Herbers, T. H. C.
TI Noise generation in the solid Earth, oceans and atmosphere, from
nonlinear interacting surface gravity waves in finite depth
SO JOURNAL OF FLUID MECHANICS
LA English
DT Article
DE acoustics; geophysical and geological flows; surface gravity waves
ID UNDERWATER SOUND; SEISMIC NOISE; SEA-FLOOR; RADIATION; PRESSURE; ENERGY;
FIELD; MICROBAROMS; MICROSEISMS
AB Oceanic pressure measurements, even in very deep water, and atmospheric pressure or seismic records, from anywhere on Earth, contain noise with dominant periods between 3 and 10 s, which is believed to be excited by ocean surface gravity waves. Most of this noise is explained by a nonlinear wave-wave interaction mechanism, and takes the form of surface gravity waves, acoustic or seismic waves. Previous theoretical work on seismic noise focused on surface (Rayleigh) waves, and did not consider finite-depth effects on the generating wave kinematics. These finite-depth effects are introduced here, which requires the consideration of the direct wave-induced pressure at the ocean bottom, a contribution previously overlooked in the context of seismic noise. That contribution can lead to a considerable reduction of the seismic noise source, which is particularly relevant for noise periods larger than 10 s. The theory is applied to acoustic waves in the atmosphere, extending previous theories that were limited to vertical propagation only. Finally, the noise generation theory is also extended beyond the domain of Rayleigh waves, giving the first quantitative expression for sources of seismic body waves. In the limit of slow phase speeds in the ocean wave forcing, the known and well-verified gravity wave result is obtained, which was previously derived for an incompressible ocean. The noise source of acoustic, acoustic-gravity and seismic modes are given by a mode-specific amplification of the same wave-induced pressure field near zero wavenumber.
C1 [Ardhuin, Fabrice] IFREMER, Lab Oceanog Spatiale, F-29280 Plouzane, France.
[Herbers, T. H. C.] USN, Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA.
RP Ardhuin, F (reprint author), IFREMER, Lab Oceanog Spatiale, F-29280 Plouzane, France.
EM ardhuin@ifremer.fr
RI Ardhuin, Fabrice/A-1364-2011
OI Ardhuin, Fabrice/0000-0002-9309-9681
FU ERC [240009]; US National Ocean Partnership Program [N00014-10-1-0383];
US Office of Naval Research Littoral Geosciences and Optics Program; US
National Oceanographic Partnership Program (NOPP)
FX F.A. is funded by ERC grant 240009 'IOWAGA' with additional support from
the US National Ocean Partnership Program, under grant N00014-10-1-0383.
T.H.C.H. is supported by the US Office of Naval Research Littoral
Geosciences and Optics Program and the US National Oceanographic
Partnership Program (NOPP). Discussions with S. Webb and L. Marie on the
theoretical aspects are gratefully acknowledged.
NR 57
TC 41
Z9 41
U1 1
U2 16
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0022-1120
J9 J FLUID MECH
JI J. Fluid Mech.
PD FEB
PY 2013
VL 716
BP 316
EP 348
DI 10.1017/jfm.2012.548
PG 33
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA 082WF
UT WOS:000314422800028
ER
PT J
AU Melcer, T
Walker, GJ
Sechriest, VF
Galarneau, M
Konoske, P
Pyo, J
AF Melcer, Ted
Walker, G. Jay
Sechriest, V. Franklin
Galarneau, Michael
Konoske, Paula
Pyo, Jay
TI Short-Term Physical and Mental Health Outcomes for Combat Amputee and
Nonamputee Extremity Injury Patients
SO JOURNAL OF ORTHOPAEDIC TRAUMA
LA English
DT Article
DE blast injury; combat amputee; extremity injury; postinjury infections;
mental health diagnoses; posttraumatic stress disorder
ID POSTTRAUMATIC-STRESS-DISORDER; ENDURING FREEDOM; IRAQ; INFECTIONS; RISK
AB Objectives: The present study: (1) reports the early physical health complications, mental health outcomes, and outpatient health care utilization of patients with serious extremity injuries sustained during the Iraq or Afghanistan wars and (2) compares clinical outcomes between amputee and nonamputee extremity injury groups.
Method: This was a retrospective review of clinical records in military health databases for patients injured in the Iraq and Afghanistan wars. Health outcomes of amputee (n = 382, injured 2001-2005) and nonamputee patients (n = 274, injured 2001-2007) with serious extremity injuries (abbreviated injury score >= 3) were followed up to 24 months post injury. This study was performed at Naval Health Research Center, San Diego.
Results: Amputee and nonamputee groups had similar injury severity scores. Amputees had nearly double the risk of certain adverse complications (infections, anemia, septicemia, and thromboembolic disease), but other complications (osteomyelitis and nonhealing wound) were similar between the 2 groups. Amputees had significantly greater odds of certain mental health disorders including mood, sleep, pain, and postconcussion syndrome. However, amputees had significantly reduced odds of posttraumatic stress disorder compared with nonamputees. Amputees used various outpatient clinics significantly more than nonamputees.
Conclusions: Patients with serious combat extremity injuries showed high rates of adverse health outcomes in the short term. Amputees had higher rates of many but not all clinically important physical and mental health outcomes compared to nonamputees. These results are important for military orthopaedic surgeons and allied providers who care for and counsel these patients and clinicians and researchers who seek to understand and improve health outcomes in patients with extremity war injuries.
C1 [Melcer, Ted; Galarneau, Michael; Konoske, Paula] USN, Med Modeling Simulat & Miss Support Dept, Hlth Res Ctr, San Diego, CA 92106 USA.
[Walker, G. Jay] Sci Applicat Int Corp, Mclean, VA 22102 USA.
[Sechriest, V. Franklin] USN, Dept Orthoped Surg, San Diego Med Ctr, San Diego, CA 92106 USA.
[Pyo, Jay] USN, Comprehens Complex Casualty Care Ctr, San Diego Med Ctr, San Diego, CA 92106 USA.
RP Melcer, T (reprint author), USN, Med Modeling Simulat & Miss Support Dept, Hlth Res Ctr, 140 Sylvester Rd, San Diego, CA 92106 USA.
EM ted.melcer@med.navy.mil
FU Office of the Assistant Secretary of Defense (Health Affairs), US Army
Medical Research and Materiel Command, Marine Corps Systems Command;
Office of Naval Research: NHRC Work Unit [60332]; Office of Naval
Research, Arlington, VA [60332]
FX Supported by Office of the Assistant Secretary of Defense (Health
Affairs), US Army Medical Research and Materiel Command, Marine Corps
Systems Command, and the Office of Naval Research: NHRC Work Unit:
60332. Report No. 10-24 was supported by the Office of Naval Research,
Arlington, VA, under Work Unit No. 60332.
NR 21
TC 9
Z9 9
U1 0
U2 5
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0890-5339
J9 J ORTHOP TRAUMA
JI J. Orthop. Trauma
PD FEB
PY 2013
VL 27
IS 2
BP E31
EP E37
DI 10.1097/BOT.0b013e3182517e1c
PG 7
WC Orthopedics; Sport Sciences
SC Orthopedics; Sport Sciences
GA 077VV
UT WOS:000314058300002
PM 22495531
ER
PT J
AU Kuehner, CA
AF Kuehner, Cynthia A.
TI My military: A navy nurse practitioner's perspective on military culture
and joining forces for veteran health
SO JOURNAL OF THE AMERICAN ACADEMY OF NURSE PRACTITIONERS
LA English
DT Article
DE Military culture; joining forces; nurse practitioner; veteran health
AB Purpose This article responds to the need for improved integration of veteran health considerations across the broader community. A focus of the Joining Forces initiative is to foster partnerships between veterans and their communities through enhanced education, knowledge, and commitment of resources and support. Data resources Data and resources on known threats to veteran health are widely available in the literature. Personal perspectives on military culture and experience expand the body of knowledge and lead to improved outcomes in both established and evolving care delivery models and best practices for veteran health. Conclusions The need for veteran health care outside of military and Veterans Affairs facilities is vast and expanding. Enhancing resources for health care of veterans is of critical importance. An understanding of military culture offers a basic reference for nonmilitary care providers to consider when providing and facilitating care across the continuum of veterans health. Implications for practice Nurse practitioners (NPs) are ideal providers of care for veteran and military family healthcare needs. NP practice incorporates cultural sensitivity, prevention strategies, and wellness-focused care while delivering and facilitating optimal patient, family, and community outcomes. The NP will be of critical community value in joining forces for veteran health.
C1 USN, Med Ctr Portsmouth, Portsmouth, VA 23708 USA.
RP Kuehner, CA (reprint author), USN, Med Ctr Portsmouth, Portsmouth, VA 23708 USA.
EM cynthia.kuehner@med.navy.mil
NR 11
TC 3
Z9 3
U1 2
U2 8
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1041-2972
J9 J AM ACAD NURSE PRAC
JI J. Am. Acad. Nurse Pract.
PD FEB
PY 2013
VL 25
IS 2
BP 77
EP 83
DI 10.1111/j.1745-7599.2012.00810.x
PG 7
WC Health Care Sciences & Services; Nursing
SC Health Care Sciences & Services; Nursing
GA 077ZK
UT WOS:000314067700003
PM 23347243
ER
PT J
AU Lednicky, EJ
Silvestrini, RT
AF Lednicky, Eric J.
Silvestrini, Rachel T.
TI Quantifying Gains Using the Capabilities-Based Test and Evaluation
Method
SO QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL
LA English
DT Article
DE design of experiments; optimal design; specifications-based test and
evaluation
AB Today's military operating environments are more operationally diverse and technically challenging. Fielding relevant weapons systems to meet the demands of this environment is increasingly difficult, prompting policy shifts that mandate a focus on systems capable of combating a wide threat range. The capabilities-based test and evaluation construct is the Department of the Navy's effort to concentrate on integrated system design with the objective of satisfying a particular operational response (capability) under a robust range of operating conditions. One aspect of capabilities-based test and evaluation is the increased employment of advanced mathematical and statistical techniques in the test and evaluation (T&E) process. This case study illustrates advantages of incorporating these invaluable techniques, like design of experiments and modeling and simulation, within the T&E process. We found through statistical analysis that the application of design of experiment concepts to the System Under Test throughout three primary phases of T&E quantifiably improved the accomplishment of the selected response variable of interest. Copyright (C) 2012 John Wiley & Sons, Ltd.
C1 [Lednicky, Eric J.; Silvestrini, Rachel T.] USN, Postgrad Sch, Dept Operat Res, Monterey, CA 93940 USA.
RP Silvestrini, RT (reprint author), USN, Postgrad Sch, Dept Operat Res, Monterey, CA 93940 USA.
EM rtjohnso@nps.edu
NR 15
TC 0
Z9 0
U1 1
U2 3
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0748-8017
J9 QUAL RELIAB ENG INT
JI Qual. Reliab. Eng. Int.
PD FEB
PY 2013
VL 29
IS 1
BP 139
EP 156
DI 10.1002/qre.1292
PG 18
WC Engineering, Multidisciplinary; Engineering, Industrial; Operations
Research & Management Science
SC Engineering; Operations Research & Management Science
GA 078RF
UT WOS:000314116300013
ER
PT J
AU Pusateri, AE
Weiskopf, RB
Bebarta, V
Butler, F
Cestero, RF
Chaudry, IH
Deal, V
Dorlac, WC
Gerhardt, RT
Given, MB
Hansen, DR
Hoots, WK
Klein, HG
Macdonald, VW
Mattox, KL
Michael, RA
Mogford, J
Montcalm-Smith, EA
Niemeyer, DM
Prusaczyk, WK
Rappold, JF
Rassmussen, T
Rentas, F
Ross, J
Thompson, C
Tucker, LD
AF Pusateri, Anthony E.
Weiskopf, Richard B.
Bebarta, Vikhyat
Butler, Frank
Cestero, Ramon F.
Chaudry, Irshad H.
Deal, Virgil
Dorlac, Warren C.
Gerhardt, Robert T.
Given, Michael B.
Hansen, Dan R.
Hoots, W. Keith
Klein, Harvey G.
Macdonald, Victor W.
Mattox, Kenneth L.
Michael, Rodney A.
Mogford, Jon
Montcalm-Smith, Elizabeth A.
Niemeyer, Debra M.
Prusaczyk, W. Keith
Rappold, Joseph F.
Rassmussen, Todd
Rentas, Francisco
Ross, James
Thompson, Christopher
Tucker, Leo D.
CA US DoD Hemorrhage Resuscitation Re
TI TRANEXAMIC ACID AND TRAUMA: CURRENT STATUS AND KNOWLEDGE GAPS WITH
RECOMMENDED RESEARCH PRIORITIES
SO SHOCK
LA English
DT Review
DE Tranexamic acid; trauma; efficacy; safety; research requirements
ID PLACEBO-CONTROLLED TRIAL; CARDIAC-SURGERY; CARDIOPULMONARY BYPASS;
SEIZURES; APROTININ; HEMORRHAGE; TRANSFUSION; CRASH-2; SAFETY
AB A recent large civilian randomized controlled trial on the use of tranexamic acid (TXA) for trauma reported important survival benefits. Subsequently, successful use of TXA for combat casualties in Afghanistan was also reported. As a result of these promising studies, there has been growing interest in the use of TXA for trauma. Potential adverse effects of TXA have also been reported. A US Department of Defense committee conducted a review and assessment of knowledge gaps and research requirements regarding the use of TXA for the treatment of casualties that have experienced traumatic hemorrhage. We present identified knowledge gaps and associated research priorities. We believe that important knowledge gaps exist and that a targeted, prioritized research effort will contribute to the refinement of practice guidelines over time.
C1 [Pusateri, Anthony E.] USA, Med Res & Mat Command, Ft Detrick, MD 21702 USA.
[Weiskopf, Richard B.] Univ Calif San Francisco, San Francisco, CA 94143 USA.
[Butler, Frank] Def Hlth Board, Comm Tact Combat Casualty Care, Pensacola, FL USA.
[Cestero, Ramon F.; Ross, James] USN, Med Res Unit, Ft Sam Houston, TX USA.
[Chaudry, Irshad H.] Univ Alabama Birmingham, Birmingham, AL USA.
[Deal, Virgil] US Special Operat Command, Macdill AFB, FL USA.
[Dorlac, Warren C.] Univ Cincinnati, Ctr Sustainment Trauma & Readiness Skills, Cincinnati, OH USA.
[Gerhardt, Robert T.; Rassmussen, Todd] USA, Inst Surg Res, Ft Sam Houston, TX 78234 USA.
[Given, Michael B.] Off Naval Res, Arlington, VA 22217 USA.
[Hoots, W. Keith] NHLBI, Bethesda, MD 20892 USA.
[Klein, Harvey G.] NIH, Ctr Clin, Bethesda, MD 20892 USA.
[Macdonald, Victor W.; Michael, Rodney A.] US Army Med Mat Dev Act, Ft Detrick, MD USA.
[Mattox, Kenneth L.] Baylor Coll Med, Houston, TX 77030 USA.
[Mogford, Jon] Def Adv Res Projects Agcy, Arlington, VA USA.
[Montcalm-Smith, Elizabeth A.] USN, Med Res Ctr, Silver Spring, MD USA.
[Prusaczyk, W. Keith] USN, Med Res & Dev Ctr, Frederick, MD USA.
[Rappold, Joseph F.] USN, Med Ctr, San Diego, CA 92152 USA.
[Rentas, Francisco] US Armed Serv Blood Program Off, Falls Church, VA USA.
[Thompson, Christopher] USN, Undersea Med Inst, Groton, CT USA.
[Tucker, Leo D.] USA, Med Ctr & Sch, Ft Sam Houston, TX USA.
RP Pusateri, AE (reprint author), USA, DoD Hemorrhage & Resuscitat Res & Dev Program, Combat Casualty Care Res Program, Med Res & Mat Command, Bldg 722, Ft Detrick, MD 21702 USA.
EM anthony.pusateri@amedd.army.mil
RI bebarta, vikhyat/K-3476-2015
NR 34
TC 40
Z9 40
U1 0
U2 11
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1073-2322
J9 SHOCK
JI Shock
PD FEB
PY 2013
VL 39
IS 2
BP 121
EP 126
DI 10.1097/SHK.0b013e318280409a
PG 6
WC Critical Care Medicine; Hematology; Surgery; Peripheral Vascular Disease
SC General & Internal Medicine; Hematology; Surgery; Cardiovascular System
& Cardiology
GA 080ZF
UT WOS:000314282900002
PM 23222525
ER
PT J
AU White, NJ
Wang, X
Bradbury, N
Moon-Massat, PF
Freilich, D
Auker, C
McCarron, R
Scultetus, A
Stern, SA
AF White, Nathan J.
Wang, Xu
Bradbury, Nicole
Moon-Massat, Paula F.
Freilich, Daniel
Auker, Charles
McCarron, Richard
Scultetus, Anke
Stern, Susan A.
TI FLUID RESUSCITATION OF UNCONTROLLED HEMORRHAGE USING A HEMOGLOBIN-BASED
OXYGEN CARRIER: EFFECT OF TRAUMATIC BRAIN INJURY
SO SHOCK
LA English
DT Article
DE Hemorrhage; traumatic brain injury; shock; fluid resuscitation;
hemoglobin-based oxygen carrier
ID BOVINE POLYMERIZED HEMOGLOBIN; SWINE MODEL; ORGAN FUNCTION; SHOCK;
HBOC-201; SUPPRESSION; MORTALITY; RESPONSES; SURVIVAL; DELAY
AB Animal models of combined traumatic brain injury (TBI) and hemorrhagic shock (HS) suggest a benefit of hemoglobin-based oxygen carrier (HBOC)-based resuscitation, but their use remains controversial, and little is known of the specific effects of TBI and high-pressure (large arterial injury) bleeding on resuscitation. We examine the effect of TBI and aortic tear injury on low-volume HBOC resuscitation in a swine polytrauma model and hypothesize that HBOC-based resuscitation will improve survival in the setting of aortic tear regardless of the presence of TBI. Anesthetized swine subjected to HS with aortic tear with or without fluid percussion TBI underwent equivalent limited resuscitation with HBOC, lactated Ringer's solution, or HBOC + nitroglycerine (vasoattenuated HBOC) and were observed for 6 h. There was no independent effect of TBI on survival time after adjustment for fluid type, and there was no interaction between TBI and resuscitation fluid type. However, total catheter hemorrhage volume required to reach target shock blood pressure was less with TBI (14.0 mL . kg(-1) [confidence interval, 12.4-15.6 mL . kg(-1)]) versus HS only (21.0 mL . kg(-1) [confidence interval, 19.5-22.5 mL . kg(-1)]), with equivalent lactate accumulation. Traumatic brain injury did not affect survival in this polytrauma model, but less hemorrhage was required in the presence of TBI to achieve an equivalent degree of shock suggesting globally impaired cardiovascular response to hemorrhage in the presence of TBI. There was also no benefit of HBOC-based fluid resuscitation over lactated Ringer's solution, contrary to models using liver injury as the source of hemorrhage, considering wound location is of paramount importance when choosing resuscitation strategy.
C1 [White, Nathan J.; Wang, Xu; Bradbury, Nicole; Stern, Susan A.] Univ Washington, Harborview Med Ctr, Div Emergency Med, Seattle, WA 98104 USA.
[Moon-Massat, Paula F.; Auker, Charles; McCarron, Richard; Scultetus, Anke] USN, NeuroTrauma Dept, OUMD, Med Res Ctr, Silver Spring, MD USA.
[Freilich, Daniel] Bur Med & Surg, Washington, DC USA.
RP White, NJ (reprint author), Univ Washington, Harborview Med Ctr, Div Emergency Med, Box 359702,325 9th Ave, Seattle, WA 98104 USA.
EM whiten4@uw.edu
FU Naval Medical Research Center (NMRC) [W81XWH-08-2-0166, HBOC-201];
National Center for Advancing Translational Sciences (NCATS) [KL2
TR000421]; National Institutes of Health (NIH); NCRR [KL2 RR025015]
FX This study was supported by the Naval Medical Research Center (NMRC)
(CDMRP grant W81XWH-08-2-0166) and, in part, by the National Center for
Advancing Translational Sciences (NCATS) (grant KL2 TR000421), a
component of the National Institutes of Health (NIH); NMRC also provided
HBOC-201 (Biopure; OPK Biotech). Dr White was funded under NCRR (grant
KL2 RR025015).
NR 35
TC 7
Z9 10
U1 0
U2 8
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1073-2322
J9 SHOCK
JI Shock
PD FEB
PY 2013
VL 39
IS 2
BP 210
EP 219
DI 10.1097/SHK.0b013e31827fd62b
PG 10
WC Critical Care Medicine; Hematology; Surgery; Peripheral Vascular Disease
SC General & Internal Medicine; Hematology; Surgery; Cardiovascular System
& Cardiology
GA 080ZF
UT WOS:000314282900015
PM 23324891
ER
PT J
AU Shattuck, NL
Brown, SAT
AF Shattuck, Nita Lewis
Brown, Stephanie A. T.
TI Wounded in Action: What the Sleep Community can Learn from Sleep
Disorders of US Military Service Members
SO SLEEP
LA English
DT Editorial Material
C1 [Shattuck, Nita Lewis] USN, Postgrad Sch, Operat Res Dept, Monterey, CA 93943 USA.
RP Shattuck, NL (reprint author), USN, Postgrad Sch, Operat Res Dept, 1411 Cunningham Rd, Monterey, CA 93943 USA.
EM nlshattu@nps.edu
NR 12
TC 1
Z9 1
U1 0
U2 7
PU AMER ACAD SLEEP MEDICINE
PI WESTCHESTER
PA ONE WESTBROOK CORPORATE CTR, STE 920, WESTCHESTER, IL 60154 USA
SN 0161-8105
J9 SLEEP
JI Sleep
PD FEB 1
PY 2013
VL 36
IS 2
BP 159
EP 160
DI 10.5665/sleep.2356
PG 2
WC Clinical Neurology; Neurosciences
SC Neurosciences & Neurology
GA 082LQ
UT WOS:000314393700001
PM 23372259
ER
PT J
AU Zacharias, N
Finch, CT
Girard, TM
Henden, A
Bartlett, JL
Monet, DG
Zacharias, MI
AF Zacharias, N.
Finch, C. T.
Girard, T. M.
Henden, A.
Bartlett, J. L.
Monet, D. G.
Zacharias, M. I.
TI THE FOURTH US NAVAL OBSERVATORY CCD ASTROGRAPH CATALOG (UCAC4)
SO ASTRONOMICAL JOURNAL
LA English
DT Article
DE astrometry; catalogs; reference systems; stars: kinematics and dynamics
ID PROPER-MOTION STARS; SKY SURVEY 2MASS; TO 0.''18 YR(-1); RIGHT
ASCENSION; SOLAR NEIGHBORHOOD; DECLINATIONS -90-DEGREES; SOUTHERN SKY;
13H 30M; DISCOVERY; -40-DEGREES
AB The fourth United States Naval Observatory (USNO) CCD Astrograph Catalog, UCAC4, was released in 2012 August (double-sided DVD and CDS data center Vizier catalog I/322). It is the final release in this series and contains over 113 million objects; over 105 million of them with proper motions (PMs). UCAC4 is an updated version of UCAC3 with about the same number of stars also covering all-sky. Bugs were fixed, Schmidt plate survey data were avoided, and precise five-band photometry was added for about half the stars. Astrograph observations have been supplemented for bright stars by FK6, Hipparcos, and Tycho-2 data to compile a UCAC4 star catalog complete from the brightest stars to about magnitude R = 16. Epoch 1998-2004 positions are obtained from observations with the 20 cm aperture USNO Astrograph's "red lens," equipped with a 4k by 4k CCD. Mean positions and PMs are derived by combining these observations with over 140 ground-and space-based catalogs, including Hipparcos/Tycho and the AC2000.2, as well as unpublished measures of over 5000 plates from other astrographs. For most of the faint stars in the southern hemisphere, the first epoch plates from the Southern Proper Motion program form the basis for PMs, while the Northern Proper Motion first epoch plates serve the same purpose for the rest of the sky. These data are supplemented by 2MASS near-IR photometry for about 110 million stars and five-band (B, V, g, r, i) APASS data for over 51 million stars. Thus the published UCAC4, as were UCAC3 and UCAC2, is a compiled catalog with the UCAC observational program being a major component. The positional accuracy of stars in UCAC4 at mean epoch is about 15-100 mas per coordinate, depending on magnitude, while the formal errors in PMs range from about 1 to 10 mas yr(-1) depending on magnitude and observing history. Systematic errors in PMs are estimated to be about 1-4 mas yr(-1).
C1 [Zacharias, N.; Finch, C. T.; Bartlett, J. L.] USN Observ, Washington, DC 20392 USA.
[Girard, T. M.] Yale Univ, Dept Astron, New Haven, CT 06520 USA.
[Henden, A.] AAVSO, Cambridge, MA 02138 USA.
[Monet, D. G.] USN Observ, Flagstaff Stn, Flagstaff, AZ 86001 USA.
RP Zacharias, N (reprint author), USN Observ, 3450 Massachusetts Ave NW, Washington, DC 20392 USA.
EM nz@usno.navy.mil
NR 41
TC 418
Z9 423
U1 0
U2 9
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-6256
J9 ASTRON J
JI Astron. J.
PD FEB
PY 2013
VL 145
IS 2
AR 44
DI 10.1088/0004-6256/145/2/44
PG 14
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 071FB
UT WOS:000313571600018
ER
PT J
AU Ackermann, M
Ajello, M
Asano, K
Baldini, L
Barbiellini, G
Baring, MG
Bastieri, D
Bellazzini, R
Blandford, RD
Bonamente, E
Borgland, AW
Bottacini, E
Bregeon, J
Brigida, M
Bruel, P
Buehler, R
Buson, S
Caliandro, GA
Cameron, RA
Caraveo, PA
Cecchi, C
Charles, E
Chaves, RCG
Chekhtman, A
Chiang, J
Ciprini, S
Claus, R
Cohen-Tanugi, J
Conrad, J
Cutini, S
D'Ammando, F
de Angelis, A
de Palma, F
Dermer, CD
Silva, EDE
Drell, PS
Drlica-Wagner, A
Favuzzi, C
Fegan, SJ
Focke, WB
Franckowiak, A
Fukazawa, Y
Fusco, P
Gargano, F
Gasparrini, D
Gehrels, N
Giglietto, N
Giordano, F
Giroletti, M
Glanzman, T
Godfrey, G
Granot, J
Greiner, J
Grenier, IA
Grove, JE
Guiriec, S
Hadasch, D
Hanabata, Y
Hayashida, M
Hays, E
Hughes, RE
Jackson, MS
Jogler, T
Johannesson, G
Johnson, AS
Knodlseder, J
Kocevski, D
Kuss, M
Lande, J
Larsson, S
Latronico, L
Longo, F
Loparco, F
Lovellette, MN
Lubrano, P
Mazziotta, MN
McEnery, JE
Mehault, J
Meszaros, P
Michelson, PF
Mitthumsiri, W
Mizuno, T
Monte, C
Monzani, ME
Moretti, E
Morselli, A
Moskalenko, IV
Murgia, S
Naumann-Godo, M
Norris, JP
Nuss, E
Nymark, T
Ohno, M
Ohsugi, T
Omodei, N
Orienti, M
Orlando, E
Paneque, D
Perkins, JS
Pesce-Rollins, M
Piron, F
Pivato, G
Racusin, JL
Raino, S
Rando, R
Razzano, M
Razzaque, S
Reimer, A
Reimer, O
Romoli, C
Roth, M
Ryde, F
Sanchez, DA
Sgro, C
Siskind, EJ
Sonbas, E
Spinelli, P
Stamatikos, M
Takahashi, H
Tanaka, T
Thayer, JG
Thayer, JB
Tibaldo, L
Tinivella, M
Tosti, G
Troja, E
Usher, TL
Vandenbroucke, J
Vasileiou, V
Vianello, G
Vitale, V
Waite, AP
Winer, BL
Wood, KS
Yang, Z
Gruber, D
Bhat, PN
Bissaldi, E
Briggs, MS
Burgess, JM
Connaughton, V
Foley, S
Kippen, RM
Kouveliotou, C
McBreen, S
McGlynn, S
Paciesas, WS
Pelassa, V
Preece, R
Rau, A
van der Horst, AJ
von Kienlin, A
Kann, DA
Filgas, R
Klose, S
Kruhler, T
Fukui, A
Sako, T
Tristram, PJ
Oates, SR
Ukwatta, TN
Littlejohns, O
AF Ackermann, M.
Ajello, M.
Asano, K.
Baldini, L.
Barbiellini, G.
Baring, M. G.
Bastieri, D.
Bellazzini, R.
Blandford, R. D.
Bonamente, E.
Borgland, A. W.
Bottacini, E.
Bregeon, J.
Brigida, M.
Bruel, P.
Buehler, R.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Cecchi, C.
Charles, E.
Chaves, R. C. G.
Chekhtman, A.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Conrad, J.
Cutini, S.
D'Ammando, F.
de Angelis, A.
de Palma, F.
Dermer, C. D.
do Couto e Silva, E.
Drell, P. S.
Drlica-Wagner, A.
Favuzzi, C.
Fegan, S. J.
Focke, W. B.
Franckowiak, A.
Fukazawa, Y.
Fusco, P.
Gargano, F.
Gasparrini, D.
Gehrels, N.
Giglietto, N.
Giordano, F.
Giroletti, M.
Glanzman, T.
Godfrey, G.
Granot, J.
Greiner, J.
Grenier, I. A.
Grove, J. E.
Guiriec, S.
Hadasch, D.
Hanabata, Y.
Hayashida, M.
Hays, E.
Hughes, R. E.
Jackson, M. S.
Jogler, T.
Johannesson, G.
Johnson, A. S.
Knoedlseder, J.
Kocevski, D.
Kuss, M.
Lande, J.
Larsson, S.
Latronico, L.
Longo, F.
Loparco, F.
Lovellette, M. N.
Lubrano, P.
Mazziotta, M. N.
McEnery, J. E.
Mehault, J.
Meszaros, P.
Michelson, P. F.
Mitthumsiri, W.
Mizuno, T.
Monte, C.
Monzani, M. E.
Moretti, E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Naumann-Godo, M.
Norris, J. P.
Nuss, E.
Nymark, T.
Ohno, M.
Ohsugi, T.
Omodei, N.
Orienti, M.
Orlando, E.
Paneque, D.
Perkins, J. S.
Pesce-Rollins, M.
Piron, F.
Pivato, G.
Racusin, J. L.
Raino, S.
Rando, R.
Razzano, M.
Razzaque, S.
Reimer, A.
Reimer, O.
Romoli, C.
Roth, M.
Ryde, F.
Sanchez, D. A.
Sgro, C.
Siskind, E. J.
Sonbas, E.
Spinelli, P.
Stamatikos, M.
Takahashi, H.
Tanaka, T.
Thayer, J. G.
Thayer, J. B.
Tibaldo, L.
Tinivella, M.
Tosti, G.
Troja, E.
Usher, T. L.
Vandenbroucke, J.
Vasileiou, V.
Vianello, G.
Vitale, V.
Waite, A. P.
Winer, B. L.
Wood, K. S.
Yang, Z.
Gruber, D.
Bhat, P. N.
Bissaldi, E.
Briggs, M. S.
Burgess, J. M.
Connaughton, V.
Foley, S.
Kippen, R. M.
Kouveliotou, C.
McBreen, S.
McGlynn, S.
Paciesas, W. S.
Pelassa, V.
Preece, R.
Rau, A.
van der Horst, A. J.
von Kienlin, A.
Kann, D. A.
Filgas, R.
Klose, S.
Kruhler, T.
Fukui, A.
Sako, T.
Tristram, P. J.
Oates, S. R.
Ukwatta, T. N.
Littlejohns, O.
TI MULTIWAVELENGTH OBSERVATIONS OF GRB 110731A: GeV EMISSION FROM ONSET TO
AFTERGLOW
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE gamma-ray burst: individual (GRB110731A)
ID GAMMA-RAY BURST; HIGH-ENERGY EMISSION; LARGE-AREA TELESCOPE; SWIFT
ULTRAVIOLET/OPTICAL TELESCOPE; INTERNAL SHOCK MODEL; LIGHT CURVES;
OPTICAL AFTERGLOWS; FERMI OBSERVATIONS; SPECTRAL CATALOG; PEAK
LUMINOSITY
AB We report on the multiwavelength observations of the bright, long gamma-ray burst GRB 110731A, by the Fermi and Swift observatories, and by the MOA and GROND optical telescopes. The analysis of the prompt phase reveals that GRB 110731A shares many features with bright Large Area Telescope bursts observed by Fermi during the first three years on-orbit: a light curve with short time variability across the whole energy range during the prompt phase, delayed onset of the emission above 100 MeV, extra power-law component and temporally extended high-energy emission. In addition, this is the first GRB for which simultaneous GeV, X-ray, and optical data are available over multiple epochs beginning just after the trigger time and extending for more than 800 s, allowing temporal and spectral analysis in different epochs that favor emission from the forward shock in a wind-type medium. The observed temporally extended GeV emission is most likely part of the high-energy end of the afterglow emission. Both the single-zone pair transparency constraint for the prompt signal and the spectral and temporal analysis of the forward-shock afterglow emission independently lead to an estimate of the bulk Lorentz factor of the jet Gamma similar to 500-550.
C1 [Ackermann, M.] Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany.
[Ajello, M.; Blandford, R. D.; Borgland, A. W.; Bottacini, E.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; do Couto e Silva, E.; Drell, P. S.; Drlica-Wagner, A.; Focke, W. B.; Franckowiak, A.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Jogler, T.; Johnson, A. S.; Kocevski, D.; Lande, J.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Omodei, N.; Orlando, E.; Paneque, D.; Reimer, A.; Reimer, O.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Usher, T. L.; Vandenbroucke, J.; Vianello, G.; Waite, A. P.] Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA.
[Ajello, M.; Blandford, R. D.; Borgland, A. W.; Bottacini, E.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; do Couto e Silva, E.; Drell, P. S.; Drlica-Wagner, A.; Focke, W. B.; Franckowiak, A.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Jogler, T.; Johnson, A. S.; Kocevski, D.; Lande, J.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Omodei, N.; Orlando, E.; Paneque, D.; Reimer, A.; Reimer, O.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Usher, T. L.; Vandenbroucke, J.; Vianello, G.; Waite, A. P.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Asano, K.] Tokyo Inst Technol, Interact Res Ctr Sci, Meguro, Tokyo 1528551, Japan.
[Baldini, L.; Bellazzini, R.; Bregeon, J.; Kuss, M.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Tinivella, M.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Barbiellini, G.; Longo, F.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Barbiellini, G.; Longo, F.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Baring, M. G.] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA.
[Bastieri, D.; Buson, S.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Bastieri, D.; Buson, S.; Pivato, G.; Rando, R.; Romoli, C.; Tibaldo, L.] Univ Padua, Dipartimento Fis & Astron G Galilei, I-35131 Padua, Italy.
[Bonamente, E.; Cecchi, C.; D'Ammando, F.; Lubrano, P.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Lubrano, P.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Univ Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Bruel, P.; Fegan, S. J.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Caliandro, G. A.; Hadasch, D.] IEEE CSIC, Inst Ciencies Espai, E-08193 Barcelona, Spain.
[Caraveo, P. A.] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy.
[Chaves, R. C. G.; Grenier, I. A.; Naumann-Godo, M.] Univ Paris Diderot, CEA Saclay, Serv Astrophys, Lab AIM,CEA IRFU,CNRS, F-91191 Gif Sur Yvette, France.
[Chekhtman, A.; Razzaque, S.] George Mason Univ, Coll Sci, Ctr Earth Observing & Space Res, Fairfax, VA 22030 USA.
[Ciprini, S.] ASI Sci Data Ctr, I-00044 Rome, Italy.
[Cohen-Tanugi, J.; Mehault, J.; Nuss, E.; Piron, F.; Vasileiou, V.] Univ Montpellier 2, CNRS, IN2P3, Lab Univers & Particules Montpellier, Montpellier, France.
[Conrad, J.; Larsson, S.; Yang, Z.] Stockholm Univ, AlbaNova, Dept Phys, SE-10691 Stockholm, Sweden.
[Conrad, J.; Jackson, M. S.; Larsson, S.; Moretti, E.; Nymark, T.; Ryde, F.; Yang, Z.] AlbaNova, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
[Cutini, S.; Gasparrini, D.] Agenzia Spaziale Italiana ASI Sci Data Ctr, I-00044 Rome, Italy.
[D'Ammando, F.] IASF Palermo, I-90146 Palermo, Italy.
[D'Ammando, F.] INAF Ist Astrofis Spaziale & Fis Cosm, I-00133 Rome, Italy.
[de Angelis, A.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy.
[de Angelis, A.] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy.
[Dermer, C. D.; Grove, J. E.; Lovellette, M. N.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Fukazawa, Y.; Hanabata, Y.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
[Gehrels, N.; Hays, E.; McEnery, J. E.; Perkins, J. S.; Racusin, J. L.; Sonbas, E.; Stamatikos, M.; Troja, E.; Ukwatta, T. N.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Giroletti, M.; Orienti, M.] INAF Ist Radioastron, I-40129 Bologna, Italy.
[Granot, J.] Univ Hertfordshire, Sci & Technol Res Inst, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England.
[Greiner, J.; Gruber, D.; Foley, S.; McBreen, S.; Rau, A.; von Kienlin, A.; Kann, D. A.; Filgas, R.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Guiriec, S.; Bhat, P. N.; Briggs, M. S.; Burgess, J. M.; Connaughton, V.; Paciesas, W. S.; Pelassa, V.; Preece, R.] Univ Alabama, CSPAR, Huntsville, AL 35899 USA.
[Hayashida, M.] Kyoto Univ, Grad Sch Sci, Dept Astron, Sakyo Ku, Kyoto 6068502, Japan.
[Hughes, R. E.; Stamatikos, M.; Winer, B. L.] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Dept Phys, Columbus, OH 43210 USA.
[Jackson, M. S.; Moretti, E.; Nymark, T.; Ryde, F.] AlbaNova, Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden.
[Johannesson, G.] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland.
[Knoedlseder, J.] IRAP, CNRS, F-31028 Toulouse 4, France.
[Knoedlseder, J.] Univ Toulouse, UPS OMP, IRAP, GAHEC, Toulouse, France.
[Larsson, S.] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden.
[Latronico, L.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[McEnery, J. E.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
[McEnery, J. E.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[Meszaros, P.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
[Mizuno, T.; Ohsugi, T.] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan.
[Norris, J. P.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Norris, J. P.] Boise State Univ, Dept Phys, Boise, ID 83725 USA.
[Ohno, M.] JAXA, Inst Space & Astronaut Sci, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan.
[Paneque, D.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Perkins, J. S.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA.
[Perkins, J. S.] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA.
[Perkins, J. S.] CRESST, Greenbelt, MD 20771 USA.
[Perkins, J. S.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Razzano, M.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Razzano, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Reimer, A.; Reimer, O.; Bissaldi, E.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.
[Reimer, A.; Reimer, O.; Bissaldi, E.] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria.
[Roth, M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Sanchez, D. A.] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany.
[Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA.
[Sonbas, E.] Adiyaman Univ, Dept Phys, TR-02040 Adiyaman, Turkey.
[Sonbas, E.] USRA, Columbia, MD 21044 USA.
[Vianello, G.] CIFS, I-10133 Turin, Italy.
[Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-10133 Turin, Italy.
[Foley, S.; McBreen, S.] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland.
[Kippen, R. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Kouveliotou, C.; van der Horst, A. J.] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA.
[McGlynn, S.; Kann, D. A.] Tech Univ Munich, Exzellenzcluster Universe, D-85748 Garching, Germany.
[Kann, D. A.; Klose, S.] Thuringer Landessternwarte Tautenburg, D-07778 Tautenburg, Germany.
[Filgas, R.] Czech Tech Univ, Inst Expt & Appl Phys, Prague 12800, Czech Republic.
[Kruhler, T.] Niels Bohr Inst, DK-2100 Copenhagen O, Denmark.
[Fukui, A.] Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan.
[Sako, T.] Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan.
[Tristram, P. J.] Victoria Univ Wellington, SCPS, Wellington Nz, New Zealand.
[Oates, S. R.] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England.
[Ukwatta, T. N.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
[Littlejohns, O.] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England.
RP Ackermann, M (reprint author), Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany.
EM johan.bregeon@pi.infn.it; kocevski@slac.stanford.edu;
srazzaque@ssd5.nrl.navy.mil; eleonora.troja@nasa.gov; dgruber@mpe.mpg.de
RI Tosti, Gino/E-9976-2013; Orlando, E/R-5594-2016; Rando,
Riccardo/M-7179-2013; Hays, Elizabeth/D-3257-2012; Reimer,
Olaf/A-3117-2013; Morselli, Aldo/G-6769-2011; Johannesson,
Gudlaugur/O-8741-2015; Loparco, Francesco/O-8847-2015; Gargano,
Fabio/O-8934-2015; giglietto, nicola/I-8951-2012; Moskalenko,
Igor/A-1301-2007; Mazziotta, Mario /O-8867-2015; Sgro,
Carmelo/K-3395-2016; Bissaldi, Elisabetta/K-7911-2016
OI Moretti, Elena/0000-0001-5477-9097; Gasparrini,
Dario/0000-0002-5064-9495; Kruehler, Thomas/0000-0002-8682-2384;
Baldini, Luca/0000-0002-9785-7726; Giordano,
Francesco/0000-0002-8651-2394; Preece, Robert/0000-0003-1626-7335;
Caraveo, Patrizia/0000-0003-2478-8018; Sgro',
Carmelo/0000-0001-5676-6214; SPINELLI, Paolo/0000-0001-6688-8864; Rando,
Riccardo/0000-0001-6992-818X; Burgess, James/0000-0003-3345-9515;
Bastieri, Denis/0000-0002-6954-8862; Omodei, Nicola/0000-0002-5448-7577;
Pesce-Rollins, Melissa/0000-0003-1790-8018; orienti,
monica/0000-0003-4470-7094; Giroletti, Marcello/0000-0002-8657-8852;
McBreen, Sheila/0000-0002-1477-618X; Reimer, Olaf/0000-0001-6953-1385;
Morselli, Aldo/0000-0002-7704-9553; Johannesson,
Gudlaugur/0000-0003-1458-7036; Loparco, Francesco/0000-0002-1173-5673;
Gargano, Fabio/0000-0002-5055-6395; giglietto,
nicola/0000-0002-9021-2888; Moskalenko, Igor/0000-0001-6141-458X;
Mazziotta, Mario /0000-0001-9325-4672; Bissaldi,
Elisabetta/0000-0001-9935-8106
FU K. A. Wallenberg Foundation; UK Space Agency; DFG [HA 1850/28-1, Kl
766/16-1]; European Commission under the Marie Curie Intra-European
Fellowship Programme; MPE; Ministry of Education, Culture, Sports,
Science and Technology (MEXT) of Japan
FX Royal Swedish Academy of Sciences Research Fellow, funded by a grant
from the K. A. Wallenberg Foundation.; We gratefully acknowledge the
contributions of dozens of members of the Swift team at OAB, PSU, UL,
GSFC, ASDC, and MSSL and our subcontractors, who helped make these
instruments possible. This work made use of data supplied by the UK
Swift Science Data Centre at the University of Leicester. S.R.O.
acknowledges support from the UK Space Agency.; Part of the funding for
GROND (both hardware and personnel) was generously granted from the
Leibniz-Prize to Professor G. Hasinger (DFG grant HA 1850/28-1). T. K.
acknowledges support by the European Commission under the Marie Curie
Intra-European Fellowship Programme. D. A. K. and S. K. acknowledge
support by grant DFG Kl 766/16-1. D. A. K. is grateful for travel
funding support through the MPE.; We acknowledge the MOA collaboration
to permit target of opportunity observations for GRB afterglow. We also
acknowledge the University of Canterbury for allowing MOA to use the B&C
telescope. This work was partially supported by the Ministry of
Education, Culture, Sports, Science and Technology (MEXT) of Japan.
NR 99
TC 28
Z9 28
U1 0
U2 30
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 FEB 1
PY 2013
VL 763
IS 2
AR 71
DI 10.1088/0004-637X/763/2/71
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 075FR
UT WOS:000313869800002
ER
PT J
AU Finke, JD
AF Finke, Justin D.
TI COMPTON DOMINANCE AND THE BLAZAR SEQUENCE
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE BL Lacertae objects: general; galaxies: active; gamma rays: galaxies;
quasars: general; radiation mechanisms: non-thermal
ID ACTIVE GALACTIC NUCLEI; LARGE-AREA TELESCOPE; BL LACERTAE OBJECTS;
SPECTRAL ENERGY-DISTRIBUTIONS; X-RAY-EMISSION; I RADIO GALAXIES;
GAMMA-RAY; RELATIVISTIC JET; TEV BLAZARS; BEPPOSAX OBSERVATIONS
AB Does the "blazar sequence" exist, or is it a result of a selection effect, due to the difficulty in measuring the redshifts of blazars with both high synchrotron peak frequencies (greater than or similar to 10(15) Hz) and luminosities (greater than or similar to 10(46) erg s(-1))? We explore this question with a sample of blazars from the second catalog of active galactic nuclei from the Fermi Large Area Telescope. The Compton dominance, the ratio of the peak of the Compton to the synchrotron peak luminosities, is essentially a redshift-independent quantity and thus crucial to answering this question. We find that a correlation exists between Compton dominance and the peak frequency of the synchrotron component for all blazars in the sample, including ones with unknown redshift. We then construct a simple model to explain the blazar properties in our sample, where the difference between sources is due to only the magnetic field of the blazar jet emitting region, the external radiation field energy density, and the jet angle to the line of sight, with the magnetic field strength and external energy density being correlated. This model can reproduce the trends of the blazars in the sample and predicts that blazars may be discovered in the future with high synchrotron peak frequencies and luminosities. At the same time the simple model reproduces the lack of high-synchrotron-peaked blazars with high Compton dominances (greater than or similar to 1).
C1 USN, Res Lab, Washington, DC 20375 USA.
RP Finke, JD (reprint author), USN, Res Lab, Code 7653,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM justin.finke@nrl.navy.mil
FU Fermi GI Grant [NNH09ZDA001N]
FX We are grateful to C. D. Dermer, M. Georganopoulos, M. Lister, and K.
Wood for useful discussions on the blazar sequence; to C. D. Dermer and
A. Wehrle, who gave helpful comments on a previous version of this
manuscript; to M. Hayashida for the SED of 3C 279; and to the anonymous
referee for very useful comments. This work was partially supported by
Fermi GI Grant NNH09ZDA001N.
NR 76
TC 42
Z9 43
U1 1
U2 5
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 FEB 1
PY 2013
VL 763
IS 2
AR 134
DI 10.1088/0004-637X/763/2/134
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 075FR
UT WOS:000313869800065
ER
PT J
AU Manoj, P
Watson, DM
Neufeld, DA
Megeath, ST
Vavrek, R
Yu, V
Visser, R
Bergin, EA
Fischer, WJ
Tobin, JJ
Stutz, AM
Ali, B
Wilson, TL
Di Francesco, J
Osorio, M
Maret, S
Poteet, CA
AF Manoj, P.
Watson, D. M.
Neufeld, D. A.
Megeath, S. T.
Vavrek, R.
Yu, Vincent
Visser, R.
Bergin, E. A.
Fischer, W. J.
Tobin, J. J.
Stutz, A. M.
Ali, B.
Wilson, T. L.
Di Francesco, J.
Osorio, M.
Maret, S.
Poteet, C. A.
TI HERSCHEL/PACS SPECTROSCOPIC SURVEY OF PROTOSTARS IN ORION: THE ORIGIN OF
FAR-INFRARED CO EMISSION
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE circumstellar matter; ISM: jets and outflows; molecular processes;
stars: formation; techniques: spectroscopic
ID YOUNG STELLAR OBJECTS; SPITZER-SPACE-TELESCOPE; LOW-MASS PROTOSTARS;
MAGNETOHYDRODYNAMIC SHOCK-WAVES; BIPOLAR MOLECULAR OUTFLOWS; ARRAY
CAMERA IRAC; STAR-FORMATION; LINE EMISSION; STATISTICAL-METHODS;
PROTOSTELLAR DISKS
AB We present far-infrared (57-196 mu m) spectra of 21 protostars in the Orion molecular clouds. These were obtained with the Photodetector Array Camera and Spectrometer (PACS) on board the Herschel Space observatory as part of the Herschel Orion Protostar Survey program. We analyzed the emission lines from rotational transitions of CO, involving rotational quantum numbers in the range J(up) = 14-46, using PACS spectra extracted within a projected distance of less than or similar to 2000 AU centered on the protostar. The total luminosity of the CO lines observed with PACS (L-CO) is found to increase with increasing protostellar luminosity (L-bol). However, no significant correlation is found between L-CO and evolutionary indicators or envelope properties of the protostars such as bolometric temperature, T-bol, or envelope density. The CO rotational (excitation) temperature implied by the line ratios increases with increasing rotational quantum number J, and at least 3-4 rotational temperature components are required to fit the observed rotational diagram in the PACS wavelength range. The rotational temperature components are remarkably invariant between protostars and show no dependence on L-bol, T-bol, or envelope density, implying that if the emitting gas is in local thermodynamic equilibrium, the CO emission must arise in multiple temperature components that remain independent of L-bol over two orders of magnitudes. The observed CO emission can also be modeled as arising from a single-temperature gas component or from a medium with a power-law temperature distribution; both of these require sub-thermally excited molecular gas at low densities (n(H-2) less than or similar to 10(6) cm(-3)) and high temperatures (T greater than or similar to 2000 K). Our results suggest that the contribution from photodissociation regions, produced along the envelope cavity walls from UV-heating, is unlikely to be the dominant component of the CO emission observed with PACS. Instead, the "universality" of the rotational temperatures and the observed correlation between L-CO and L-bol can most easily be explained if the observed CO emission originates in shock-heated, hot (T greater than or similar to 2000 K), sub-thermally excited (n(H-2) less than or similar to 10(6) cm(-3)) molecular gas. Post-shock gas at these densities is more likely to be found within the outflow cavities along the molecular outflow or along the cavity walls at radii greater than or similar to several 100-1000 AU.
C1 [Manoj, P.; Watson, D. M.; Yu, Vincent] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA.
[Neufeld, D. A.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
[Megeath, S. T.; Fischer, W. J.; Poteet, C. A.] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA.
[Vavrek, R.] European Space Agcy, ESAC SRE OAH, E-28691 Madrid, Spain.
[Visser, R.; Bergin, E. A.] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA.
[Tobin, J. J.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA.
[Stutz, A. M.] Max Planck Inst Astron, D-69117 Heidelberg, Germany.
[Stutz, A. M.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
[Ali, B.] CALTECH, IPAC, NHSC, Pasadena, CA 91125 USA.
[Wilson, T. L.] USN, Res Lab, Washington, DC 20375 USA.
[Di Francesco, J.] Univ Victoria, Dept Phys & Astron, Herzberg Inst Astrophys, Natl Res Council Canada, Victoria, BC V9E 2E7, Canada.
[Osorio, M.] CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain.
[Maret, S.] Univ Grenoble 1, CNRS, UMR 571, Lab Astrophys Grenoble,Observ Grenoble, F-38041 Grenoble, France.
RP Manoj, P (reprint author), Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA.
EM manoj@pas.rochester.edu
OI Fischer, William J/0000-0002-3747-2496; Stutz,
Amelia/0000-0003-2300-8200; Yu, Vincent/0000-0002-2802-6849; Maret,
Sebastien/0000-0003-1104-4554
NR 89
TC 52
Z9 52
U1 0
U2 8
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD FEB 1
PY 2013
VL 763
IS 2
AR 83
DI 10.1088/0004-637X/763/2/83
PG 26
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 075FR
UT WOS:000313869800014
ER
PT J
AU Wang, YM
Muglach, K
AF Wang, Y. -M.
Muglach, K.
TI TRANSIENT BRIGHTENINGS ASSOCIATED WITH FLUX CANCELLATION ALONG A
FILAMENT CHANNEL
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE Sun: activity; Sun: chromosphere; Sun: filaments, prominences; Sun:
magnetic topology; Sun: surface magnetism; Sun: UV radiation
ID X-RAY JETS; MAGNETIC-FIELD; ACTIVE-REGION; SOLAR PROMINENCES; EVOLUTION;
RECONNECTION; ORIGIN; SITES; FLOWS; MODEL
AB Filament channels coincide with large-scale polarity inversion lines of the photospheric magnetic field, where flux cancellation continually takes place. High-cadence Solar Dynamics Observatory (SDO) images recorded in He II 30.4 nm and Fe IX 17.1 nm during 2010 August 22 reveal numerous transient brightenings occurring along the edge of a filament channel within a decaying active region, where SDO line-of-sight magnetograms show strong opposite-polarity flux in close contact. The brightenings are elongated along the direction of the filament channel, with linear extents of several arcseconds, and typically last a few minutes; they sometimes have the form of multiple two-sided ejections with speeds on the order of 100 km s(-1). Remarkably, some of the brightenings rapidly develop into larger scale events, forming sheetlike structures that are eventually torn apart by the diverging flows in the filament channel and ejected in opposite directions. We interpret the brightenings as resulting from reconnections among filament-channel field lines having one footpoint located in the region of canceling flux. In some cases, the flow patterns that develop in the channel may bring successive horizontal loops together and cause a cascade to larger scales.
C1 [Wang, Y. -M.] USN, Code 7682, Div Space Sci, Res Lab, Washington, DC 20375 USA.
[Muglach, K.] NASA, Code 674, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Muglach, K.] ARTEP Inc, Ellicott City, MD 21042 USA.
RP Wang, YM (reprint author), USN, Code 7682, Div Space Sci, Res Lab, Washington, DC 20375 USA.
EM yi.wang@nrl.navy.mil; karin.muglach@nasa.gov
FU NASA; NSF; Office of Naval Research
FX We thank S. F. Martin, N. Srivastava, and the referee for helpful
comments. This work was supported by NASA, NSF, and the Office of Naval
Research.
NR 27
TC 9
Z9 9
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD FEB 1
PY 2013
VL 763
IS 2
AR 97
DI 10.1088/0004-637X/763/2/97
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 075FR
UT WOS:000313869800028
ER
PT J
AU Jung, W
Brozena, J
Peters, M
AF Jung, W.
Brozena, J.
Peters, M.
TI Predicting gravity and sediment thickness in Afghanistan
SO GEOPHYSICAL JOURNAL INTERNATIONAL
LA English
DT Article
DE Space geodetic surveys; Gravity anomalies and earth structure
ID AIRBORNE GRAVITY; CONTINENTAL LITHOSPHERE; BATHYMETRIC PREDICTION;
ATLANTIC-OCEAN; FIELD MODEL; TERRAIN; GRAVIMETRY; SEA; GPS
AB The US Naval Research Laboratory conducted comprehensive high-altitude (7 km above mean sea level) aero-geophysical surveys over Afghanistan in 2006 (Rampant Lion I). The surveys were done in collaboration with the US Geological Survey and upon the request of Islamic Republic of Afghanistan Ministry of Mines. In this study, we show that a best fitting admittance between topography and airborne gravity in western Afghanistan can be used to predict airborne gravity for the no-data area of eastern Afghanistan where the mountains are too high to conduct airborne surveys, due to the threat of ground fire. The differences between the airborne and the predicted gravity along a tie-track through the no-data area were found to be within +/- 12 mGal range with rms difference 7.3 mGal, while those between the predicted gravity from a simple Airy model (with compensation depth of 32 km and crustal density of 2.67 g cm(-3)) and the airborne gravity were within +/- 22 mGal range with rms difference 10.3 mGal. A combined airborne free-air anomaly has been constructed by merging the predicted gravity with the airborne data. We also demonstrate that sediment thickness can be estimated for basin areas where surface topography and airborne free-air anomaly profiles do not show a correlation presumably because of thick sediments. In order to estimate sediment thickness, we first determine a simple linear relationship from a scatter plot of the airborne gravity points and the interpolated Shuttle Radar Topography Mission (SRTM) topography along the Rampant Lion I tracks, and computed corresponding quasi-topography tracks by multiplying the linear relationship with the airborne free-air anomalies. We then take the differences between the SRTM and quasi-topography as a first-order estimate of sediment thickness. A global gravity model (GOCO02S), upward continued to the same altitude (7 km above mean sea level) as the data collection, was compared with the low-pass filtered (with cutoff wavelength 132 km which is approximately equivalent to the reported safe degree and order 250 of GOCO02S at 34 boolean OR N) combined airborne free-air anomalies. The rms difference between the two data sets was 12.4 mGal. The observed admittance in the western Afghanistan mountains appears to be best fit to a theoretical elastic plate compensation model (with an effective elastic thickness of 5 km and crustal thickness of 22 km) where the ratio between surface load and subsurface load is equal.
C1 [Jung, W.; Brozena, J.; Peters, M.] USN, Res Lab, Marine Geosci Div, Washington, DC 20375 USA.
RP Jung, W (reprint author), USN, Res Lab, Marine Geosci Div, Washington, DC 20375 USA.
EM wooyeol.jung@nrl.navy.mil
FU ONR [61153N]
FX We thank the U. S. Navy's scientific development squadron VXS-1 and NRL
staff, and USGS scientists who participated in the RAMPANT I survey. We
thank David Ball for his expert help in processing the airborne gravity
data. Comments and suggestions by Jerome Verdun, Peter Vogt, Bert
Vermeersen (Editor) and an anonymous reviewer have improved this paper.
We particularly acknowledge a valuable suggestion by Jerome Verdun to
add another method to estimate sediment thickness. Figures were all
drafted using GMT software (Wessel & Smith 1991). This work was
supported by ONR core funding at NRL Battlespace Environments NS program
(PE # 61153N).
NR 64
TC 1
Z9 1
U1 0
U2 12
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0956-540X
EI 1365-246X
J9 GEOPHYS J INT
JI Geophys. J. Int.
PD FEB
PY 2013
VL 192
IS 2
BP 586
EP 601
DI 10.1093/gji/ggs038
PG 16
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 071VG
UT WOS:000313623100009
ER
PT J
AU Chen, RC
Wagner, K
Blankenship, GL
AF Chen, Richard C.
Wagner, Kevin
Blankenship, Gilmer L.
TI Constrained Partially Observed Markov Decision Processes With
Probabilistic Criteria for Adaptive Sequential Detection
SO IEEE TRANSACTIONS ON AUTOMATIC CONTROL
LA English
DT Article
DE Dynamic programming; partially observed Markov decision process;
probabilistic criteria; target confirmation
ID TESTS
AB Dynamic programming equations are derived which characterize the optimal value functions for a partially observed constrained Markov decision process problem with both total cost and probabilistic criteria. More specifically, the goal is to minimize an expected total cost subject to a constraint on the probability that another total cost exceeds a prescribed threshold. The Markov decision process is partially observed, but it is assumed that the constraint costs are available to the controller, i.e., they are fully observed. The problem is motivated by an adaptive sequential detection application. The application of the dynamic programming results to optimal adaptive truncated sequential detection is demonstrated using an example involving the optimization of a radar detection process.
C1 [Chen, Richard C.; Wagner, Kevin] USN, Res Lab, Washington, DC 20375 USA.
[Blankenship, Gilmer L.] Univ Maryland, Dept Elect Engn, College Pk, MD 20742 USA.
RP Chen, RC (reprint author), USN, Res Lab, Code 5340, Washington, DC 20375 USA.
EM richard.chen@nrl.navy.mil; kevin.wagner@nrl.navy.mil; gilmer@eng.umd.edu
NR 14
TC 1
Z9 1
U1 0
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9286
J9 IEEE T AUTOMAT CONTR
JI IEEE Trans. Autom. Control
PD FEB
PY 2013
VL 58
IS 2
BP 487
EP 493
DI 10.1109/TAC.2012.2208312
PG 8
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA 079IF
UT WOS:000314163100020
ER
PT J
AU Millett, PJ
Schoenahl, JY
Register, B
Gaskill, TR
van Deurzen, DFP
Martetschlager, F
AF Millett, Peter J.
Schoenahl, Jean-Yves
Register, Bradley
Gaskill, Trevor R.
van Deurzen, Derek. F. P.
Martetschlaeger, Frank
TI Reconstruction of posterior glenoid deficiency using distal tibial
osteoarticular allograft
SO KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
LA English
DT Article
DE Glenoid bone loss; Posterior shoulder instability; Bone deficiency;
Allograft; Distal tibia
ID BONE BLOCK PROCEDURE; SHOULDER INSTABILITY
AB Posterior shoulder instability with glenoid deficiency is a rare entity and its surgical treatment is challenging. Reconstructive techniques have focused on extra-articular structural bone transfer that obstructs humeral translation and thereby prevents glenohumeral dislocation. However, long-term results are not as promising. In this report, the authors describe a technique for anatomic posterior glenoid reconstruction using an osteoarticular distal tibia allograft in two patients including their outcomes after 2 years.
Level of evidence IV.
C1 [Millett, Peter J.; Schoenahl, Jean-Yves; Martetschlaeger, Frank] Steadman Philippon Res Inst, Steadman Clin, Vail, CO 81657 USA.
[Register, Bradley] Athens Orthoped Clin, Athens, GA 30606 USA.
[Gaskill, Trevor R.] USN, Bone & Joints Sports Med Inst, Med Ctr Portsmouth, Portsmouth, VA 23708 USA.
[van Deurzen, Derek. F. P.] OLVG, NL-1091 AC Amsterdam, Netherlands.
[Martetschlaeger, Frank] Tech Univ Munich, Dept Orthopaed Sports Med, Univ Hosp Rechts Isar, D-81675 Munich, Germany.
RP Millett, PJ (reprint author), Steadman Philippon Res Inst, Steadman Clin, 181 W Meadow Dr, Vail, CO 81657 USA.
EM marilee.horan@sprivail.org
NR 14
TC 17
Z9 17
U1 0
U2 2
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0942-2056
J9 KNEE SURG SPORT TR A
JI Knee Surg. Sports Traumatol. Arthrosc.
PD FEB
PY 2013
VL 21
IS 2
BP 445
EP 449
DI 10.1007/s00167-012-2254-5
PG 5
WC Orthopedics; Sport Sciences; Surgery
SC Orthopedics; Sport Sciences; Surgery
GA 074JU
UT WOS:000313809600026
PM 23114865
ER
PT J
AU Roland, CM
Fragiadakis, D
Gamache, RM
Casalini, R
AF Roland, C. M.
Fragiadakis, D.
Gamache, R. M.
Casalini, R.
TI Factors influencing the ballistic impact resistance of elastomer-coated
metal substrates
SO PHILOSOPHICAL MAGAZINE
LA English
DT Article
DE ballistic impact resistance; elastomer coatings; metal substrates;
polyurea
ID THIN POLYMER-FILMS; SILICATE NANOCOMPOSITES; DIELECTRIC-SPECTROSCOPY;
ENERGY-ABSORPTION; GLASS-TRANSITION; POLYUREA; DYNAMICS; DEFORMATION;
BEHAVIOR; MICROSTRUCTURE
AB An experimental study was carried out of various factors affecting the ballistic penetration resistance of elastomer/steel bilayers. For blunt penetrators, the contribution of the coating to performance is optimized using the hardest substrates, front surface placement of the elastomer, and (when normalizing by added weight) thin, ca. 23?mm, coatings. These results, none of which are predicted by existing models, evince the marked coupling of coating and substrate in the impact response of the bilayer. We also show that nanoparticle fillers have a modest effect on ballistic performance of polyurea coatings, changing the penetration velocity by a few percent or less. This contrasts with the linear dynamic mechanical behavior, which shows much more significant increases in energy absorption due to nano-reinforcement.
C1 [Roland, C. M.; Fragiadakis, D.; Casalini, R.] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
[Gamache, R. M.] USN, Ctr Surface Warfare, Dahlgren, VA 22448 USA.
RP Roland, CM (reprint author), USN, Res Lab, Div Chem, Code 6120, Washington, DC 20375 USA.
EM roland@nrl.navy.mil
RI Fragiadakis, Daniel/A-4510-2009
FU Office of Naval Research; [331]
FX This work was supported by the Office of Naval Research, in part by Code
331. We thank C.B. Giller for the Brinell hardness measurements.
NR 36
TC 9
Z9 10
U1 1
U2 36
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 1478-6435
EI 1478-6443
J9 PHILOS MAG
JI Philos. Mag.
PD FEB 1
PY 2013
VL 93
IS 5
BP 468
EP 477
DI 10.1080/14786435.2012.722235
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Metallurgy & Metallurgical Engineering; Physics
GA 079JO
UT WOS:000314166600003
ER
PT J
AU Taylor, MK
Pietrobon, R
Taverniers, J
Leon, MR
Fern, BJ
AF Taylor, Marcus K.
Pietrobon, Ricardo
Taverniers, John
Leon, Matthew R.
Fern, Benedict J.
TI Relationships of hardiness to physical and mental health status in
military men: a test of mediated effects
SO JOURNAL OF BEHAVIORAL MEDICINE
LA English
DT Article
DE Hardiness; Health; Mediated effects; Mental health; Physical health
ID RESILIENCE INTERVENTION; PERSONALITY CONSTRUCT; PROTECTIVE FACTORS;
COPING STRATEGIES; JOB-SATISFACTION; LIFE EVENTS; STRESS; ILLNESS;
PREDICTORS; SUPPORT
AB Evidence links the personality trait hardiness to both mental (MH) and physical health (PH) status, but few unifying models delineate interrelationships of these variables. The first purpose of this study was to examine the association of hardiness to MH and PH in military men. Second, we tested the hypothesis that MH would mediate the association of hardiness with PH. Identical measures were collected in two separate, demographically-similar samples (n = 65 and n = 55). All subjects completed a background questionnaire, the Dispositional Resilience Scale-15 and the Short Form 36 Medical Outcomes Survey. Associations between hardiness, PH and MH were examined using regression-based mediation analyses followed by the Sobel test of indirect effects. In the total sample, hardiness predicted PH in an initial regression model (beta = 0.37, p < .001). When MH was added to the model, however, PH's influence was substantially attenuated and no longer significant (beta = 0.06, p > .05). A Sobel test of significance confirmed a mediated effect (p < .001). Similar patterns were observed in each individual sample. Hardiness is associated with PH in military men, and this relationship is mediated by MH.
C1 [Taylor, Marcus K.] USN, Dept Behav Sci & Epidemiol, Hlth Res Ctr, San Diego, CA 92152 USA.
[Pietrobon, Ricardo] Duke Univ, Med Ctr, Dept Anesthesiol, Durham, NC 27710 USA.
[Pietrobon, Ricardo] Duke Univ, Med Ctr, Dept Surg, Durham, NC 27710 USA.
[Taverniers, John] Open Univ Netherlands, Fac Psychol, Heerlen, Netherlands.
[Taverniers, John] Royal Mil Acad, Dept Behav Sci, Brussels, Belgium.
[Leon, Matthew R.; Fern, Benedict J.] USN, Operat Stress & Resilience Program, Aeromed Res Directorate, Aerosp Med Res Lab, Pensacola, FL USA.
RP Taylor, MK (reprint author), USN, Dept Behav Sci & Epidemiol, Hlth Res Ctr, 140 Sylvester Rd, San Diego, CA 92152 USA.
EM marc.taylor@med.navy.mil
NR 72
TC 10
Z9 10
U1 2
U2 22
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0160-7715
J9 J BEHAV MED
JI J. Behav. Med.
PD FEB
PY 2013
VL 36
IS 1
BP 1
EP 9
DI 10.1007/s10865-011-9387-8
PG 9
WC Psychology, Clinical
SC Psychology
GA 068KT
UT WOS:000313366300001
PM 22108762
ER
PT J
AU Ganesan, A
Krantz, EM
Hullsiek, KH
Riddle, MS
Weintrob, AC
Lalani, T
Okulicz, JF
Landrum, M
Agan, B
Whitman, TJ
Ross, MJ
Crum-Cianflone, NF
AF Ganesan, A.
Krantz, E. M.
Hullsiek, K. Huppler
Riddle, M. S.
Weintrob, A. C.
Lalani, T.
Okulicz, J. F.
Landrum, M.
Agan, B.
Whitman, T. J.
Ross, M. J.
Crum-Cianflone, N. F.
CA Infect Dis Clinical Res Program
TI Determinants of incident chronic kidney disease and progression in a
cohort of HIV-infected persons with unrestricted access to health care
SO HIV MEDICINE
LA English
DT Article
DE baseline CD4 count; ethnicity; highly active antiretroviral therapy; HIV
infection; kidney disease; socioeconomic status
ID STAGE RENAL-DISEASE; GLOMERULAR-FILTRATION-RATE; ACTIVE ANTIRETROVIRAL
THERAPY; ATHEROSCLEROSIS RISK; RACIAL-DIFFERENCES; NEPHROPATHY;
SPECTRUM; RECOMMENDATIONS; ASSOCIATION; COMMUNITIES
AB Objectives As socioeconomic factors may impact the risk of chronic kidney disease (CKD), we evaluated the incidence and risk factors of incident CKD among an HIV-infected cohort with universal access to health care and minimal injecting drug use (IDU). Methods Incident CKD was defined as an estimated glomerular filteration rate (eGFR) <60?ml/min/1.73?m2 for =?90 days. eGFR was calculated using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. Rates were calculated per 1000 person-years (PY). Associations with outcomes were assessed using two separate Cox proportional hazard models, adjusting for baseline and time-updated covariates. Results Among 3360 participants [median age 29 years; 92% male; 44% African American (AA)] contributing 23?091 PY of follow-up, 116 developed incident CKD [5.0/1000 PY; 95% confidence interval (CI) 4.26.0/1000 PY]. The median first eGFR value was 97.0?mL/min/1.73?m2 [interquartile range (IQR) 85.3110.1?mL/min/1.73?m2]. Baseline factors associated with CKD included older age, lower CD4 count at HIV diagnosis [compared with CD4 count =?500 cells/mu L, hazard ratio (HR) 2.1 (95% CI 1.23.8) for CD4 count 350499 cells/mu L; HR 3.6 (95% CI 2.06.3) for CD4 count 201349 cells/mu L; HR 4.3 (95% CI 2.09.4) for CD4 count =?200 cells/mu L], and HIV diagnosis in the pre-highly active antiretroviral therapy (HAART) era. In the time-updated model, low nadir CD4 counts, diabetes, hepatitis B, hypertension and less HAART use were also associated with CKD. AA ethnicity was not associated with incident CKD in either model. Conclusions The low incidence of CKD and the lack of association with ethnicity observed in this study may in part be attributable to unique features of our cohort such as younger age, early HIV diagnosis, minimal IDU, and unrestricted access to care. Lower baseline CD4 counts were significantly associated with incident CKD, suggesting early HIV diagnosis and timely introduction of HAART may reduce the burden of CKD.
C1 [Ganesan, A.; Krantz, E. M.; Hullsiek, K. Huppler; Weintrob, A. C.; Lalani, T.; Okulicz, J. F.; Landrum, M.; Agan, B.; Whitman, T. J.; Crum-Cianflone, N. F.] Uniformed Serv Univ Hlth Sci, Infect Dis Clin Res Program, Bethesda, MD 20814 USA.
[Ganesan, A.] Natl Naval Med Ctr, Div Infect Dis, Bethesda, MD 20889 USA.
[Krantz, E. M.; Hullsiek, K. Huppler] Univ Minnesota, Minneapolis, MN USA.
[Weintrob, A. C.] Walter Reed Army Med Ctr, Washington, DC 20307 USA.
[Lalani, T.] USN, Med Ctr Portsmouth, Portsmouth, VA USA.
[Okulicz, J. F.; Landrum, M.] San Antonio Mil Med Ctr, San Antonio, TX USA.
[Ross, M. J.] Mt Sinai Sch Med, New York, NY USA.
[Crum-Cianflone, N. F.] USN, San Diego Med Ctr, San Diego, CA 92152 USA.
[Crum-Cianflone, N. F.] USN, Hlth Res Ctr, San Diego, CA 92152 USA.
RP Ganesan, A (reprint author), Natl Naval Med Ctr, Div Infect Dis, 8901 Wisconsin Ave, Bethesda, MD 20889 USA.
EM anuradha.ganesan@med.navy.mil
OI Polis, Michael/0000-0002-9151-2268; Agan, Brian/0000-0002-5114-1669
FU Infectious Disease Clinical Research Program (IDCRP), a Department of
Defense (DoD) programme executed through the Uniformed Services
University of the Health Sciences [IDCRP-015]; National Institute of
Allergy and Infectious Diseases, National Institutes of Health (NIH)
[Y1-AI-5072]
FX We would like to thank the participants and their caregivers, without
whom none of this work would be possible. We would also like to thank
the research coordinators and support staff who have diligently worked
on the Department of Defense HIV Natural History Study, as well as the
members of the Infectious Disease Clinical Research Program HIV Working
Group, listed in the Appendix. Support for this work (IDCRP-015) was
provided by the Infectious Disease Clinical Research Program (IDCRP), a
Department of Defense (DoD) programme executed through the Uniformed
Services University of the Health Sciences. This project has been funded
in whole, or in part, with federal funds from the National Institute of
Allergy and Infectious Diseases, National Institutes of Health (NIH),
under Inter-Agency Agreement Y1-AI-5072.
NR 42
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U1 0
U2 8
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1464-2662
J9 HIV MED
JI HIV Med.
PD FEB
PY 2013
VL 14
IS 2
BP 65
EP 76
DI 10.1111/j.1468-1293.2012.01036.x
PG 12
WC Infectious Diseases
SC Infectious Diseases
GA 063KV
UT WOS:000312998300001
PM 22808988
ER
PT J
AU Sprouse, C
Tosi, L
Lipof, J
Abdel-Ghani, M
Clifford, H
Norrell, K
Leo, N
Rentas, V
Gordish-Dressman, H
Devaney, J
Kelly, K
AF Sprouse, Courtney
Tosi, Laura
Lipof, Jason
Abdel-Ghani, Mai
Clifford, Hugo
Norrell, Kirsten
Leo, Nathanael
Rentas, Victoria
Gordish-Dressman, Heather
Devaney, Joseph
Kelly, Karen
TI CKMM Polymorphism Is Associated with Physical Fitness Test Scores In
Military Recruits
SO JOURNAL OF BONE AND MINERAL RESEARCH
LA English
DT Meeting Abstract
CT Annual Meeting of the American-Society-for-Bone-and-Mineral-Research
CY OCT 04-07, 2013
CL Baltimore, MD
SP Amer Soc Bone & Mineral Res
C1 [Sprouse, Courtney; Tosi, Laura; Gordish-Dressman, Heather; Devaney, Joseph] Childrens Natl Med Ctr, Washington, DC USA.
[Lipof, Jason; Clifford, Hugo; Norrell, Kirsten; Leo, Nathanael] George Washington Univ, Washington, DC 20052 USA.
[Abdel-Ghani, Mai] George Mason Univ, Fairfax, VA 22030 USA.
[Rentas, Victoria] Howard Univ, Washington, DC USA.
[Kelly, Karen] Naval Hlth Res, San Diego, CA USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0884-0431
EI 1523-4681
J9 J BONE MINER RES
JI J. Bone Miner. Res.
PD FEB
PY 2013
VL 28
SU 1
MA SA0194
PG 3
WC Endocrinology & Metabolism
SC Endocrinology & Metabolism
GA AB8JI
UT WOS:000332035803107
ER
PT J
AU Aysun, U
Brady, R
Honig, A
AF Aysun, Uluc
Brady, Ryan
Honig, Adam
TI Financial frictions and the strength of monetary transmission
SO JOURNAL OF INTERNATIONAL MONEY AND FINANCE
LA English
DT Article
DE Monetary transmission; Financial frictions; Bankruptcy costs
AB This paper examines the effect of financial frictions on the strength of the monetary transmission mechanism. Credit channel theory implies that the transmission mechanism of monetary policy should be stronger in countries with high levels of financial frictions, all else equal. The intuition is that in these countries, external finance premiums are more sensitive to firms' financial leverage. By affecting asset prices, therefore, monetary policy has greater impact on external finance premiums and output. We test this theoretical prediction by estimating SVAR models on cross-country data to generate indicators for the strength of monetary transmission. We find a positive relationship between various measures of financial frictions and the strength of monetary transmission, supporting the predictions of credit channel theory. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Aysun, Uluc] Univ Cent Florida, Orlando, FL 32816 USA.
[Brady, Ryan] US Naval Acad, Annapolis, MD 21402 USA.
[Honig, Adam] Amherst Coll, Amherst, MA 01002 USA.
RP Aysun, U (reprint author), Univ Cent Florida, Coll Business Adm, Dept Econ, 4000 Cent Florida Blvd, Orlando, FL 32816 USA.
EM uaysun@bus.ucf.edu; ahonig@amherst.edu
OI Aysun, Uluc/0000-0002-3136-2915
NR 57
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U1 1
U2 3
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0261-5606
EI 1873-0639
J9 J INT MONEY FINANC
JI J. Int. Money Finan.
PD FEB
PY 2013
VL 32
BP 1097
EP 1119
DI 10.1016/j.jimonfin.2012.09.003
PG 23
WC Business, Finance
SC Business & Economics
GA V38NL
UT WOS:000209350000052
ER
PT J
AU Riley, MR
Coats, T
Haupt, K
Jacobson, D
AF Riley, Michael R.
Coats, Tim
Haupt, Kelly
Jacobson, Donald
TI Ride Severity Index: A Simplified Approach for Comparing Peak
Acceleration Responses of High-Speed Craft
SO JOURNAL OF SHIP PRODUCTION AND DESIGN
LA English
DT Article
DE seakeeping; wave impact; peak acceleration; planing craft
AB This article presents a simplified approach to quantifying the comparison of acceleration responses of high-speed craft in rough seas. Statistical acceleration values, used to characterize craft seakeeping responses, including average of the highest one-third, one-tenth, and 1/100 th peak accelerations and the root mean square acceleration, are used to define the relative Ride Severity Index (RSI). The article first summarizes an unambiguous computational procedure for multiple investigators to calculate similar acceleration values. It then explains the theory and rational for relating statistical acceleration ratios to an indication of potential damage, whether resulting from cumulative wave impacts or single severe slam events, that can be used in comparative assessments of structural integrity, equipment susceptibility to malfunction, or personnel comfort and safety. Example ride severity comparison plots and computed values of RSI are presented to illustrate the simplicity of the approach and to demonstrate the ability to quantify what heretofore has relied primarily on the subjective experience of operators.
C1 [Riley, Michael R.] Columbia Grp, Virginia Beach, VA 22312 USA.
[Coats, Tim; Haupt, Kelly; Jacobson, Donald] Naval Surface Warfare Ctr, Carderock Div, Combatant Craft Div, Virginia Beach, VA USA.
RP Riley, MR (reprint author), Columbia Grp, Virginia Beach, VA 22312 USA.
NR 19
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Z9 0
U1 0
U2 0
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 FEB
PY 2013
VL 29
IS 1
BP 25
EP 35
DI 10.5957/JSPD.29.1.120051
PG 11
WC Engineering, Marine
SC Engineering
GA AW0CQ
UT WOS:000345958300003
ER
PT J
AU Judge, CQ
AF Judge, Carolyn Q.
TI Comparisons Between Prediction and Experiment for Lift Force and Heel
Moment for a Planing Hull
SO JOURNAL OF SHIP PRODUCTION AND DESIGN
LA English
DT Article
DE planing hulls; hydrodynamics (general); model testing; dynamic stability
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 results from 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. The available righting moment resulting from the hydrostatic buoyancy is, therefore, reduced. As the righting moment resulting from hydrostatic buoyancy is reduced, the righting moment resulting from dynamic effects becomes important. These hydrodynamic righting effects are related to the hydrodynamic lift. This article explores the relationship between the hydrostatic lift and righting moment, the hydrodynamic lift and righting moment, and the total lift and heel-restoring moment of a planing craft operating at planing speeds. A series of tow tests using a prismatic hull with a constant deadrise of 20 degrees measured the lift force and righting moment at various angles of heel and at various model velocities. The model was completely constrained in surge, sway, heave, roll, pitch, and yaw. The underwater volume is determined from the known hull configuration and the underwater photography of the keel and chine wetted lengths. The results presented include the total lift and righting moment with the hydrostatic and hydrodynamic contributions for various model speeds at two model displacements.
C1 US Naval Acad, Dept Naval Architecture & Ocean Engn, Annapolis, MD 21402 USA.
RP Judge, CQ (reprint author), US Naval Acad, Dept Naval Architecture & Ocean Engn, Annapolis, MD 21402 USA.
FU Office of Naval Research [N0001411WX21106]
FX I acknowledge the work of William Beaver and Dan Rhodes, of the
Hydromechanics Laboratory at the U.S. Naval Academy, who put
considerable effort and talent into construction of the Forced Roll
Mechanism and data collection for this project. The support of the
Office of Naval Research is gratefully acknowledged through grant
N0001411WX21106.
NR 12
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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 FEB
PY 2013
VL 29
IS 1
BP 36
EP 46
DI 10.5957/JSPD.29.1.120040
PG 11
WC Engineering, Marine
SC Engineering
GA AW0CQ
UT WOS:000345958300004
ER
PT J
AU Jones, DE
Jones, F
Suttinger, L
Toler, A
Hammond, P
Medina, S
AF Jones, David E.
Jones, Franca
Suttinger, Laura
Toler, Ayessa
Hammond, Patricia
Medina, Steven
TI Placement of Combat Stress Teams in Afghanistan: Reducing Barriers to
Care
SO MILITARY MEDICINE
LA English
DT Editorial Material
AB This article describes the medical planning process whereby combat stress and mental health clinicians were placed at Forward Operating Bases in southern and western Afghanistan during a period of intensive surge operations in 2009-2010. The distribution plan for the Combat Stress Control teams was based on previously published guidance on ratios of combat stress personnel to troop end-strength, population at-risk data, and kinetic activity associated with current and future combat operations. The article concludes with outcome data that validates the distribution decisions made through the planning process. Through dissemination of this information, it is hoped that future planners and clinicians can improve the processes involved in providing combat stress and mental health services to forward-deployed troops.
C1 [Jones, David E.] Naval Med Ctr Portsmouth, Portsmouth, VA 23708 USA.
[Jones, Franca] Naval Med Res Ctr, Silver Spring, MD 20910 USA.
[Suttinger, Laura] 467th Med Detachment Combat Stress Control, Madison, WI 53715 USA.
[Toler, Ayessa] CNO OPNAV, Med Resources Plans & Policy Div N931, Washington, DC 20350 USA.
[Hammond, Patricia] US Army John F Kennedy Special Warfare Ctr & Sch, ATTN AOJK GRP, Ft Bragg, NC 28310 USA.
[Medina, Steven] NAS JRB, RC Fleet Hosp 15, Ft Worth, TX 76127 USA.
RP Jones, DE (reprint author), Naval Med Ctr Portsmouth, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
NR 4
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 FEB
PY 2013
VL 178
IS 2
BP 121
EP 125
DI 10.7205/MILMED-D-12-00163
PG 5
WC Medicine, General & Internal
SC General & Internal Medicine
GA AN7TW
UT WOS:000340804900003
PM 23495454
ER
PT J
AU Johannsen, DA
Solka, JL
AF Johannsen, David A.
Solka, Jeffrey L.
TI Embedding in space forms
SO JOURNAL OF MULTIVARIATE ANALYSIS
LA English
DT Article
DE Metric MDS; Space form; Surface; Steepest descent minimization
AB The goal of this paper is to give explicit procedures and equations for performing metric multidimensional scaling to surfaces. More specifically, we describe a method for determining a configuration of points in a closed and orientable surface (i.e., the MDS space) for which the interpoint distances closely approximate a given set of dissimilarities. More generally, these constant sectional curvature surfaces are examples of space forms (spaces which are quotients of Euclidean, spherical, or hyperbolic space by a subgroup of the isometry group of the space). We will cast our work in this language, thereby allowing the theory to easily be generalized to higher dimensions. Published by Elsevier Inc.
C1 [Johannsen, David A.; Solka, Jeffrey L.] USN, Ctr Surface Warfare, Dahlgren, VA 22448 USA.
RP Johannsen, DA (reprint author), USN, Ctr Surface Warfare, Code Q33,18444 Frontage Rd,Suite 327, Dahlgren, VA 22448 USA.
EM david.johannsen@navy.mil
NR 13
TC 0
Z9 0
U1 0
U2 4
PU ELSEVIER INC
PI SAN DIEGO
PA 525 B STREET, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0047-259X
J9 J MULTIVARIATE ANAL
JI J. Multivar. Anal.
PD FEB
PY 2013
VL 114
BP 171
EP 188
DI 10.1016/j.jmva.2012.06.002
PG 18
WC Statistics & Probability
SC Mathematics
GA 050FT
UT WOS:000312039200012
ER
PT J
AU Mushrush, GW
Hughes, JM
Willauer, HD
AF Mushrush, George W.
Hughes, Janet M.
Willauer, Heather D.
TI Blends of Soybean Biodiesel with Petroleum Diesel: Advantages
SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
LA English
DT Article
AB The use of bioderived materials both as fuels and/or as blending stocks becomes more attractive as the price of hydrocarbon transportation fuels continues to rise. Historically, many biomass and agricultural derived materials have been suggested. Middle distillate transportation fuels for military applications have more severe restrictions than for the regular commercial consumer. One of the most difficult requirements to meet is that of fuel storage stability. In the present research, Soygold, a soybean derived fuel, was added in concentrations of 10-20% to both stable and unstable petroleum middle distillate fuels. The addition of the soy liquid was shown by ASTM methods to enhance fuel combustion properties, greatly improve the stability of unstable fuels, and dramatically increase fuel lubricity.
C1 [Mushrush, George W.; Willauer, Heather D.] USN, Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
[Mushrush, George W.; Hughes, Janet M.] George Mason Univ, Dept Chem & Biochem, Fairfax, VA 22030 USA.
RP Willauer, HD (reprint author), USN, Res Lab, Div Mat Sci & Technol, Code 6300-2,4555 Overlook Ave, Washington, DC 20375 USA.
EM heather.willauer@nrl.navy.mil
FU Office of Naval Research through the Naval Research Laboratory
FX This work was supported by the Office of Naval Research both directly
and through the Naval Research Laboratory.
NR 12
TC 2
Z9 2
U1 0
U2 16
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0888-5885
J9 IND ENG CHEM RES
JI Ind. Eng. Chem. Res.
PD JAN 30
PY 2013
VL 52
IS 4
BP 1764
EP 1768
DI 10.1021/ie302865x
PG 5
WC Engineering, Chemical
SC Engineering
GA 083VB
UT WOS:000314492200043
ER
PT J
AU Rong, CB
Wang, DP
Nguyen, VV
Daniil, M
Willard, MA
Zhang, Y
Kramer, MJ
Liu, JP
AF Rong, C. Bing
Wang, Dapeng
Vuong Van Nguyen
Daniil, Maria
Willard, Matthew A.
Zhang, Ying
Kramer, M. J.
Liu, J. Ping
TI Effect of selective Co addition on magnetic properties of
Nd-2(FeCo)(14)B/alpha-Fe nanocomposite magnets
SO JOURNAL OF PHYSICS D-APPLIED PHYSICS
LA English
DT Article
ID PERMANENT-MAGNETS; INTERFACE STRUCTURE; ENERGY PRODUCT; SUBSTITUTION;
ENHANCEMENT; SYSTEMS; ALLOYS; FE
AB Nd2Fe14B/alpha-Fe-based hard/soft nanocomposite magnets with Co addition have been prepared by ball-milling and warm compaction. It was found that Co addition into the magnetically hard phase improves magnetic properties significantly, especially the remanence ratio and coercivity. The effect on the magnetic properties of the selective Co addition may be attributed to enhanced interdiffusion across the hard/soft interface that improves the interface conditions for effective interphase exchange coupling. By optimizing the Co content in the Nd15Fe79-xCoxB6 hard phase, an energy product value about 21 MG Oe can be obtained in the isotropic Nd-2(FeCo)(14)B/alpha-(FeCo) nanocomposite magnets compared with 15 MG Oe of Nd2Fe14B/alpha-Fe nanocomposite magnets prepared under the same conditions with the same grain size and microstructure, owing to the strengthened intergranular exchange interactions.
C1 [Rong, C. Bing; Wang, Dapeng; Vuong Van Nguyen; Liu, J. Ping] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA.
[Daniil, Maria] George Washington Univ, Dept Phys, Washington, DC 20052 USA.
[Willard, Matthew A.] USN, Res Lab, Washington, DC 20375 USA.
[Zhang, Ying; Kramer, M. J.] Iowa State Univ, USDOE, Ames Lab, Ames, IA 50011 USA.
RP Rong, CB (reprint author), Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA.
EM pliu@uta.edu
RI Willard, Matthew/A-8492-2009
OI Willard, Matthew/0000-0001-5052-8012
FU DARPA/ARO [W911NF-08-1-0249]; ARO [W911NF-11-1-0507.]; US Department of
Energy, Office of Basic Energy Science [DE-AC02-07CH11358]
FX This work has been supported in part by the DARPA/ARO under grant
W911NF-08-1-0249 and ARO under grant W911NF-11-1-0507. The microscopy
was performed at the Ames Laboratory, which is supported in part by the
US Department of Energy, Office of Basic Energy Science, under contract
DE-AC02-07CH11358.
NR 29
TC 5
Z9 7
U1 2
U2 43
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0022-3727
J9 J PHYS D APPL PHYS
JI J. Phys. D-Appl. Phys.
PD JAN 30
PY 2013
VL 46
IS 4
AR 045001
DI 10.1088/0022-3727/46/4/045001
PG 5
WC Physics, Applied
SC Physics
GA 071KL
UT WOS:000313591300003
ER
PT J
AU Doctrow, BM
Majumdar, A
Schlessman, JL
Garcia-MorenoE, B
AF Doctrow, Brian M.
Majumdar, Ananya
Schlessman, Jamie L.
Garcia-MorenoE, Bertrand
TI Backbone Conformational Fluctuations as Determinants of pK(a) Values of
Surface Residues in Proteins
SO BIOPHYSICAL JOURNAL
LA English
DT Meeting Abstract
CT 57th Annual Meeting of the Biophysical-Society
CY FEB 02-06, 2013
CL Philadelphia, PA
SP Biophys Soc
C1 [Doctrow, Brian M.; Majumdar, Ananya; Garcia-MorenoE, Bertrand] Johns Hopkins Univ, Baltimore, MD USA.
[Schlessman, Jamie L.] USN Acad, Annapolis, MD 21402 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD JAN 29
PY 2013
VL 104
IS 2
SU 1
BP 72A
EP 72A
PG 1
WC Biophysics
SC Biophysics
GA 105MI
UT WOS:000316074300370
ER
PT J
AU Caro, JA
Dellarole, M
Schlessman, JL
Roumestand, C
Royer, CA
Garcia-Moreno, B
AF Caro, Jose A.
Dellarole, Mariano
Schlessman, Jamie L.
Roumestand, Christian
Royer, Catherine A.
Garcia-Moreno E, Bertrand
TI Internal Cavities and their Role as Determinants of Pressure Unfolding
of Proteins
SO BIOPHYSICAL JOURNAL
LA English
DT Meeting Abstract
CT 57th Annual Meeting of the Biophysical-Society
CY FEB 02-06, 2013
CL Philadelphia, PA
SP Biophys Soc
C1 [Caro, Jose A.; Garcia-Moreno E, Bertrand] Johns Hopkins Univ, Dept Biophys, Baltimore, MD USA.
[Dellarole, Mariano; Roumestand, Christian; Royer, Catherine A.] CNRS, Ctr Biochim Struct, Montpellier, France.
[Schlessman, Jamie L.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
NR 0
TC 0
Z9 0
U1 0
U2 3
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD JAN 29
PY 2013
VL 104
IS 2
SU 1
BP 397A
EP 397A
PG 1
WC Biophysics
SC Biophysics
GA 105MI
UT WOS:000316074304019
ER
PT J
AU Wenke, BB
Schlessman, JL
Heroux, A
Lecomte, JTJ
AF Wenke, Belinda B.
Schlessman, Jamie L.
Heroux, Annie
Lecomte, Juliette T. J.
TI Comparison of the Crystal and Solution Structures of a Cyanobacterial
Hemoglobin
SO BIOPHYSICAL JOURNAL
LA English
DT Meeting Abstract
CT 57th Annual Meeting of the Biophysical-Society
CY FEB 02-06, 2013
CL Philadelphia, PA
SP Biophys Soc
C1 [Wenke, Belinda B.; Lecomte, Juliette T. J.] Johns Hopkins Univ, Baltimore, MD USA.
[Schlessman, Jamie L.] USN Acad, Annapolis, MD 21402 USA.
[Heroux, Annie] Brookhaven Natl Lab, Upton, NY 11973 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD JAN 29
PY 2013
VL 104
IS 2
SU 1
BP 561A
EP 561A
PG 1
WC Biophysics
SC Biophysics
GA 105MI
UT WOS:000316074305363
ER
PT J
AU Schlessman, JL
Chimenti, MS
Khangulov, VS
Robinson, AC
De Luca-Westrate, JN
Riback, J
Majumdar, A
Fitch, CA
Garcia-Moreno, B
AF Schlessman, Jamie L.
Chimenti, MIchael S.
Khangulov, Victor S.
Robinson, Aaron C.
De Luca-Westrate, Javier N.
Riback, Joshua
Majumdar, Ananya
Fitch, Carolyn A.
Garcia-Moreno, Bertrand
TI Structural Reorganization Triggered by the Ionization of Lys Residues
buried in Hydrophobic Environments
SO BIOPHYSICAL JOURNAL
LA English
DT Meeting Abstract
CT 57th Annual Meeting of the Biophysical-Society
CY FEB 02-06, 2013
CL Philadelphia, PA
SP Biophys Soc
C1 [Schlessman, Jamie L.] USN Acad, Annapolis, MD 21402 USA.
[Chimenti, MIchael S.; Khangulov, Victor S.; Robinson, Aaron C.; Riback, Joshua; Majumdar, Ananya; Fitch, Carolyn A.; Garcia-Moreno, Bertrand] Johns Hopkins Univ, Baltimore, MD USA.
[De Luca-Westrate, Javier N.] Univ Vermont, Coll Med, Burlington, VT USA.
NR 0
TC 0
Z9 0
U1 0
U2 2
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD JAN 29
PY 2013
VL 104
IS 2
SU 1
BP 564A
EP 565A
PG 2
WC Biophysics
SC Biophysics
GA 105MI
UT WOS:000316074305383
ER
PT J
AU Raphael, MP
Christodoulides, JA
Delehanty, JB
Byers, JM
AF Raphael, Marc P.
Christodoulides, Joseph A.
Delehanty, James B.
Byers, Jeff M.
TI The Application of Plasmonic Nanostructures for Quantitative
Measurements of Cell Secretions
SO BIOPHYSICAL JOURNAL
LA English
DT Meeting Abstract
CT 57th Annual Meeting of the Biophysical-Society
CY FEB 02-06, 2013
CL Philadelphia, PA
SP Biophys Soc
C1 [Raphael, Marc P.; Christodoulides, Joseph A.; Delehanty, James B.; Byers, Jeff M.] USN, Res Lab, Washington, DC 20375 USA.
NR 0
TC 0
Z9 0
U1 1
U2 3
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD JAN 29
PY 2013
VL 104
IS 2
SU 1
BP 675A
EP 675A
PG 1
WC Biophysics
SC Biophysics
GA 105MI
UT WOS:000316074306413
ER
PT J
AU Kiser, J
Finkel, P
Gao, JQ
Dolabdjian, C
Li, JF
Viehland, D
AF Kiser, Jillian
Finkel, Peter
Gao, Junqi
Dolabdjian, Christophe
Li, Jiefang
Viehland, D.
TI Stress reconfigurable tunable magnetoelectric resonators as magnetic
sensors
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID LAMINATE COMPOSITES; MAGNETOSTRICTION
AB We report a magnetoelastic effect in doubly clamped ferromagnetic magnetostrictive Metglas resonators with electrically and magnetically reconfigurable frequency response. The field-induced resonance frequency shift is due to magnetostrictive strain, which is shown to have a strong dependence on uniaxial stress. Here, we demonstrate that this magnetic field induced behavior can be used as the basis for a simple, tunable, magnetoelectric magnetic field sensor. The effect of tension on the field dependent magnetostrictive constant and the sensor sensitivity is examined, and the equivalent magnetic noise floor of such a sensor is estimated. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789500]
C1 [Kiser, Jillian; Finkel, Peter] USN, Undersea Warfare Ctr, Newport, RI 02841 USA.
[Gao, Junqi; Li, Jiefang; Viehland, D.] Virginia Tech, Mat Sci & Engn, Blacksburg, VA 24061 USA.
[Dolabdjian, Christophe] Univ Caen Basse Normandie, ENSICAEN, F-14032 Caen, France.
[Dolabdjian, Christophe] CNRS, GREYC UMR6072, F-14032 Caen, France.
RP Finkel, P (reprint author), USN, Undersea Warfare Ctr, Newport, RI 02841 USA.
EM peter.finkel@navy.mil
RI Gao, Junqi/F-2989-2012
NR 28
TC 7
Z9 7
U1 1
U2 91
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD JAN 28
PY 2013
VL 102
IS 4
AR 042909
DI 10.1063/1.4789500
PG 4
WC Physics, Applied
SC Physics
GA 086XS
UT WOS:000314723600066
ER
PT J
AU Freund, HP
Nguyen, DC
Sprangle, PA
van der Slot, PJM
AF Freund, H. P.
Nguyen, D. C.
Sprangle, P. A.
van der Slot, P. J. M.
TI Three-dimensional, time-dependent simulation of a regenerative amplifier
free-electron laser
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID GENERATION; COHERENT
AB Free-electron lasers have been designed to operate over virtually the entire electromagnetic spectrum from microwaves through x rays and in a variety of configurations including amplifiers and oscillators. Oscillators typically operate in the low-gain regime where the full spectral width is (Delta omega/omega) approximate to 1/N-w and the efficiency eta approximate to 1/(2.4N(w)). Further, since a low-gain oscillator saturates when the gain compensates for losses in the resonator G = L/(1 - L), this implies that the losses must be relatively small and the cavity Q must be relatively large. This imposes problems for high power oscillators because the high Q can result in mirror loading above the damage threshold, and in short-wavelength oscillators because sufficiently low loss resonators may not be possible at x-ray wavelengths. In contrast, regenerative amplifier FELs (RAFELs) employ high-gain wigglers that reach exponential gain and can operate with high loss (i.e., low Q) resonators. As such, RAFELs may be able to function at either high power levels or short wavelengths. In this paper, we describe a three-dimensional, time-dependent simulation of a RAFEL operating at a 2.2-mu m wavelength, and show that its behavior differs substantially from that of low-gain oscillators, and is closer to that of self-amplified spontaneous radiation FELs in regard to spectral linewidth and extraction efficiency. DOI: 10.1103/PhysRevSTAB.16.010707
C1 [Freund, H. P.; Nguyen, D. C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Sprangle, P. A.] USN, Res Lab, Washington, DC 20375 USA.
[van der Slot, P. J. M.] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands.
[van der Slot, P. J. M.] Colorado State Univ, Dept Elect & Comp Engn, Ft Collins, CO 80523 USA.
RP Freund, HP (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
OI Nguyen, Dinh/0000-0001-8017-6599
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 19
TC 1
Z9 1
U1 0
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD JAN 28
PY 2013
VL 16
IS 1
AR 010707
DI 10.1103/PhysRevSTAB.16.010707
PG 9
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 078KU
UT WOS:000314098500002
ER
PT J
AU Albers, JR
McCormack, JP
Nathan, TR
AF Albers, John R.
McCormack, John P.
Nathan, Terrence R.
TI Stratospheric ozone and the morphology of the northern hemisphere
planetary waveguide
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID BOREAL WINTER MONTHS; 11-YEAR SOLAR-CYCLE; SUDDEN WARMINGS; ZONAL FLOW;
TROPOSPHERE; PROPAGATION; MODEL; VARIABILITY; ATMOSPHERE; QBO
AB A middle atmosphere general circulation model is used to examine the effects of zonally asymmetric ozone (ZAO) on the Northern Hemisphere planetary waveguide (PWG) during winter (December-February). The morphology of the PWG is measured by a refractive index, Eliassen-Palm flux vectors, the latitude of the subtropical zero wind line, and the latitude of the subtropical jet. ZAO causes the PWG to contract meridionally in the upper stratosphere, expand meridionally in the lower stratosphere, and expand vertically in the upper stratosphere and lower mesosphere. The ZAO-induced changes in the PWG are the result of increased upward and poleward flux of planetary wave activity into the extratropical stratosphere and lower mesosphere. These changes cause an increase in the Eliassen-Palm flux convergence at high latitudes, which produces a warmer and weaker stratospheric polar vortex and an increase in the frequency of stratospheric sudden warmings. The ability of ZAO to alter the flux of planetary wave activity into the polar vortex has important implications for accurately modeling wave-modulated and wave-driven phenomena in the middle atmosphere, including the 11-year solar cycle, stratospheric sudden warmings, and the phase of the Northern Hemisphere annular mode. Citation: Albers, J. R., J. P. McCormack, and T. R. Nathan (2013), Stratospheric ozone and the morphology of the northern hemisphere planetary waveguide, J. Geophys. Res. Atmos., 118, 563-576, doi:10.1029/2012JD017937.
C1 [Albers, John R.; Nathan, Terrence R.] Univ Calif Davis, Dept Land Air & Water Resources Atmospher Sci Pro, Davis, CA 95616 USA.
[McCormack, John P.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Albers, JR (reprint author), Dept Land Air & Water Resources Atmospher Sci Pro, Davis, CA USA.
EM albersjohn@hotmail.com
OI McCormack, John/0000-0002-3674-0508
FU NSF [ATM-0733698]; NASA/NRL [NNH08AI67I]; Office of Naval Research; NASA
[NNH08AI67I]
FX We thank Dr. Nili Harnik and two anonymous reviewers for providing
helpful comments on the manuscript. JRA and TRN were supported in part
by NSF grant ATM-0733698 and by NASA/NRL grant NNH08AI67I. JPM was
supported in part by the Office of Naval Research and in part by NASA
Heliophysics Living with a Star TR&T Program award NNH08AI67I.
NR 55
TC 4
Z9 4
U1 1
U2 12
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD JAN 27
PY 2013
VL 118
IS 2
BP 563
EP 576
DI 10.1029/2012JD017937
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 129KN
UT WOS:000317838100023
ER
PT J
AU Kaplan, ML
Vellore, RK
Lewis, JM
Underwood, SJ
Pauley, PM
Martin, JE
Krishnan, R
AF Kaplan, Michael L.
Vellore, Ramesh K.
Lewis, John M.
Underwood, S. Jeffrey
Pauley, Patricia M.
Martin, Jonathan E.
Krishnan, R.
TI Re-examination of the I-5 dust storm
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID PART I; MODEL; IMPLEMENTATION; SENSITIVITY; ENVIRONMENT; ADJUSTMENT;
SYSTEM; SCHEME; WAVE
AB The infamous dust storm over the thanksgiving holiday of 1991 that led to loss of life from numerous automobile accidents on Interstate 5 (I-5) has been re-examined. Pauley et al. (1996) conducted an earlier investigation of this dust storm following the tenets of Danielsen's paradigm-a paradigm that links the tropopause fold phenomenon and a balanced thermally indirect circulation about the upper level jet stream. However, a cursory examination of mesoscale structures in the storm from the North American Regional Reanalysis (NARR) indicated evidence of a low-level unbalanced thermally direct circulation that demanded further investigation using a high-resolution Weather Research and Forecasting (WRF) model simulation. Principal results from the present study follow: (1) Although the model simulation showed evidence of a weak indirect circulation in the upper troposphere in support of the Danielsen's paradigm, the dynamic control of the storm stemmed from the lower tropospheric mesoscale response to geostrophic imbalance. (2) A lower tropospheric direct circulation led to mass/temperature adjustments that were confirmed by upper air observations at locations in proximity to the accident site, and (3) boundary layer deepening and destabilization due to these mesoscale processes pinpointed the timing and location of the dust storm. Although the present study does not underestimate the value of analyses that focus on the larger/synoptic scales of motion, it does bring to light the value of investigation that makes use of the mesoscale resources in order to clarify synoptic-mesoscale interactions.
C1 [Kaplan, Michael L.; Lewis, John M.] Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA.
[Vellore, Ramesh K.; Krishnan, R.] Indian Inst Trop Meteorol, Ctr Climate Change Res, Pune, Maharashtra, India.
[Lewis, John M.] Natl Severe Storms Lab, Norman, OK 73069 USA.
[Underwood, S. Jeffrey] Georgia So Univ, Dept Geol & Geog, Statesboro, GA 30460 USA.
[Pauley, Patricia M.] USN, Res Lab, Marine Meteorol Div, Monterey, CA USA.
[Martin, Jonathan E.] Univ Wisconsin, Dept Atmospher & Ocean Sci, Madison, WI USA.
RP Kaplan, ML (reprint author), Desert Res Inst, 2215 Raggio Pkwy, Reno, NV 89512 USA.
EM Mike.Kaplan@dri.edu
NR 36
TC 2
Z9 2
U1 1
U2 7
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD JAN 27
PY 2013
VL 118
IS 2
BP 627
EP 642
DI 10.1002/jgrd.50131
PG 16
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 129KN
UT WOS:000317838100028
ER
PT J
AU Nedoluha, GE
Gomez, RM
Neal, H
Lambert, A
Hurst, D
Boone, C
Stiller, G
AF Nedoluha, Gerald E.
Gomez, R. Michael
Neal, Helen
Lambert, Alyn
Hurst, Dale
Boone, Chris
Stiller, Gabriele
TI Validation of long-term measurements of water vapor from the
midstratosphere to the mesosphere at two Network for the Detection of
Atmospheric Composition Change sites
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID TROPICAL TROPOPAUSE; TEMPERATURE; MIPAS; SPECTROMETER; RADIOMETER;
RETRIEVAL; CH4
AB We present measurements from the Water Vapor Millimeter-wave Spectrometer (WVMS) instruments at Table Mountain, California (34.4 degrees N, 242.3 degrees E), and Mauna Loa, Hawaii (19.5 degrees N, 204.4 degrees E), and highlight the extended altitude range of the measurements at these sites, which now provide measurements down to 26 km. We show that this extended altitude range has been acquired without disturbing the existing long-term WVMS data set at Mauna Loa. Validation of the successful transition is provided by comparing WVMS measurements with coincident satellite measurements from the Aura Microwave Limb Sounder (MLS), the Atmospheric Chemistry Experiment, and the Michelson Interferometer for Passive Atmospheric Sounding. At the lowest altitudes where WVMS measurements are possible, we also compare with frost-point hygrometer balloon measurements. The water vapor mixing ratios measured at 50 km over Mauna Loa are the highest ever reported in the WVMS (since 1996) or MLS (since 2004) time series. Particularly encouraging for the new 26 km WVMS measurements is that they indicate an increase between 2010 and 2011 that is comparable to that observed by other instruments. This shows that these measurements are sensitive to variations at this altitude and that the instrumental baseline remains stable.
C1 [Nedoluha, Gerald E.; Gomez, R. Michael] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Neal, Helen] Computat Phys Inc, Springfield, VA USA.
[Lambert, Alyn] CALTECH, Jet Prop Lab, Pasadena, CA USA.
[Hurst, Dale] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA.
[Boone, Chris] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada.
[Stiller, Gabriele] Karlsruhe Inst Technol, Inst Meteorol & Climate Res, D-76021 Karlsruhe, Germany.
RP Nedoluha, GE (reprint author), USN, Res Lab, Remote Sensing Div, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM nedoluha@nrl.navy.mil
RI Stiller, Gabriele/A-7340-2013; Hurst, Dale/D-1554-2016
OI Stiller, Gabriele/0000-0003-2883-6873; Hurst, Dale/0000-0002-6315-2322
FU German Research Foundation (DFG) [STI 210/9-1]; NASA; Naval Research
Laboratory
FX We thank S. McDermid, D. Walsh, and T. LeBlanc at Table Mountain for
their technical assistance. Work at the Jet Propulsion Laboratory,
California Institute of Technology, was carried out under a contract
with the National Aeronautics and Space Administration. The provision of
MIPAS spectral data by ESA is gratefully acknowledged. Work at KIT was
partly supported by the German Research Foundation (DFG) under grant STI
210/9-1 (SHARP-WV). This project was funded by NASA under the Upper
Atmosphere Research Program and by the Naval Research Laboratory.
NR 33
TC 5
Z9 5
U1 0
U2 7
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD JAN 27
PY 2013
VL 118
IS 2
BP 934
EP 942
DI 10.1029/2012JD018900
PG 9
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 129KN
UT WOS:000317838100050
ER
PT J
AU Dzebisashvili, N
Massie, AB
Lentine, KL
Schnitzler, MA
Segev, D
Tuttle-Newhall, J
Gentry, S
Freeman, R
Axelrod, DA
AF Dzebisashvili, Nino
Massie, Allan B.
Lentine, Krista L.
Schnitzler, Mark A.
Segev, Dorry
Tuttle-Newhall, Janet
Gentry, Sommer
Freeman, Richard
Axelrod, David A.
TI Following the Organ Supply: Assessing the Benefit of Inter-DSA Travel in
Liver Transplantation
SO TRANSPLANTATION
LA English
DT Article
DE Healthcare disparities; Allocation policy; Geographic variation; Liver
transplantation; Socioeconomic status; MELD
ID DISPARITIES GEOCODING PROJECT; DONOR RISK INDEX; SOCIOECONOMIC-STATUS;
INEQUALITIES; DISEASE; MODEL; US; ALLOCATION; KIDNEY; MELD
AB Background. Disparity in access to liver transplantation (LT) in the United States persists despite directives from the federal government to reduce geographic variation. We assessed the impact of socioeconomic status (SES) and traveling to alternative donation service areas (DSAs) on patient survival.
Methods. A prospective cohort study integrating transplant registry and U. S. Census data was analyzed using multivariate linear Cox proportional hazards models. A separate matched-pairs analysis was used to assess the benefit of traveling on patient survival and transplantation rate.
Results. High SES is associated with increased access to LT (adjusted hazard ratio [aHR], 1.05; 95% confidence interval [95% CI], 1.01-1.08) and reduced mortality after waitlisting (aHR [95% CI], 0.88 [0.85-0.93]). Increased access is mediated, in part, through inter-DSA travel. Travel was associated with high SES, white race, blood group O, private insurance, and residence in regions 1, 5, and 11. Transplant candidates in the highest SES quartile were approximately 70% more likely to travel (aHR [95% CI], 1.67 [1.43-1.97]) than those in the lowest SES quartile. Compared with matched control patients, travelers were 74% more likely to be transplanted (aHR [95% CI], 1.74 [1.56-1.94]) and 20% less likely to die after listing (aHR [95% CI], 0.79 [0.69-0.92]).
Conclusion. High SES and inter-DSA travel are strongly associated with increased LT access and reduced mortality. Travelers are more likely to be sociodemographically advantaged and privately insured and to live in regions with reduced access to deceased-donor organs.
C1 [Dzebisashvili, Nino; Lentine, Krista L.; Schnitzler, Mark A.] St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USA.
[Massie, Allan B.; Segev, Dorry] Johns Hopkins Univ, Baltimore, MD USA.
[Tuttle-Newhall, Janet] St Louis Univ, Sch Med, Dept Surg, St Louis, MO USA.
[Gentry, Sommer] USN Acad, Baltimore, MD USA.
[Freeman, Richard; Axelrod, David A.] Dartmouth Hitchcock Med Ctr, Dept Surg, Hanover, NH 03755 USA.
RP Axelrod, DA (reprint author), Dartmouth Hitchcock Med Ctr, Dept Surg, 1 Med Ctr Dr, Hanover, NH 03755 USA.
EM David.Axelrod@hitchcock.org
OI Gentry, Sommer/0000-0003-4530-8917
FU National Institute of Diabetes Digestive and Kidney Diseases [RC1
1RC1DK086450-01, K08DK073036]; Hitchcock Foundation
FX This work was supported by an American Recovery and Reinvestment Act
grant from the National Institute of Diabetes Digestive and Kidney
Diseases (RC1 1RC1DK086450-01). D. A. A. was supported by a grant from
the Hitchcock Foundation. K. L. L. received career development support
from the National Institute of Diabetes Digestive and Kidney Diseases
(grant K08DK073036).
NR 26
TC 21
Z9 21
U1 1
U2 7
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0041-1337
J9 TRANSPLANTATION
JI Transplantation
PD JAN 27
PY 2013
VL 95
IS 2
BP 361
EP 371
DI 10.1097/TP.0b013e3182737cfb
PG 11
WC Immunology; Surgery; Transplantation
SC Immunology; Surgery; Transplantation
GA 073DB
UT WOS:000313722500022
PM 23250334
ER
PT J
AU Zhang, GJ
Cowled, C
Shi, ZL
Huang, ZY
Bishop-Lilly, KA
Fang, XD
Wynne, JW
Xiong, ZQ
Baker, ML
Zhao, W
Tachedjian, M
Zhu, YB
Zhou, P
Jiang, XT
Ng, J
Yang, L
Wu, LJ
Xiao, J
Feng, Y
Chen, YX
Sun, XQ
Zhang, Y
Marsh, GA
Crameri, G
Broder, CC
Frey, KG
Wang, LF
Wang, J
AF Zhang, Guojie
Cowled, Christopher
Shi, Zhengli
Huang, Zhiyong
Bishop-Lilly, Kimberly A.
Fang, Xiaodong
Wynne, James W.
Xiong, Zhiqiang
Baker, Michelle L.
Zhao, Wei
Tachedjian, Mary
Zhu, Yabing
Zhou, Peng
Jiang, Xuanting
Ng, Justin
Yang, Lan
Wu, Lijun
Xiao, Jin
Feng, Yue
Chen, Yuanxin
Sun, Xiaoqing
Zhang, Yong
Marsh, Glenn A.
Crameri, Gary
Broder, Christopher C.
Frey, Kenneth G.
Wang, Lin-Fa
Wang, Jun
TI Comparative Analysis of Bat Genomes Provides Insight into the Evolution
of Flight and Immunity
SO SCIENCE
LA English
DT Article
ID DNA-DAMAGE; PHYLOGENY; ACTIVATION; PATHWAYS; VIRUSES; PROTEIN; STRESS;
FAMILY; P53
AB Bats are the only mammals capable of sustained flight and are notorious reservoir hosts for some of the world's most highly pathogenic viruses, including Nipah, Hendra, Ebola, and severe acute respiratory syndrome (SARS). To identify genetic changes associated with the development of bat-specific traits, we performed whole-genome sequencing and comparative analyses of two distantly related species, fruit bat Pteropus alecto and insectivorous bat Myotis davidii. We discovered an unexpected concentration of positively selected genes in the DNA damage checkpoint and nuclear factor kappa B pathways that may be related to the origin of flight, as well as expansion and contraction of important gene families. Comparison of bat genomes with other mammalian species has provided new insights into bat biology and evolution.
C1 [Zhang, Guojie; Huang, Zhiyong; Fang, Xiaodong; Xiong, Zhiqiang; Zhao, Wei; Zhu, Yabing; Jiang, Xuanting; Yang, Lan; Xiao, Jin; Feng, Yue; Chen, Yuanxin; Sun, Xiaoqing; Zhang, Yong; Wang, Jun] BGI Shenzhen, Shenzhen 518083, Peoples R China.
[Zhang, Guojie] Univ Copenhagen, Dept Biol, Ctr Social Evolut, DK-2100 Copenhagen, Denmark.
[Cowled, Christopher; Wynne, James W.; Baker, Michelle L.; Tachedjian, Mary; Zhou, Peng; Ng, Justin; Marsh, Glenn A.; Crameri, Gary; Wang, Lin-Fa] CSIRO, Australian Anim Hlth Lab, Geelong, Vic 3220, Australia.
[Shi, Zhengli; Zhou, Peng; Wu, Lijun] Chinese Acad Sci, Wuhan Inst Virol, State Key Lab Virol, Wuhan 430071, Peoples R China.
[Bishop-Lilly, Kimberly A.; Frey, Kenneth G.] USN, Med Res Ctr, Frederick, MD 21702 USA.
[Bishop-Lilly, Kimberly A.; Frey, Kenneth G.] Henry M Jackson Fdn, Frederick, MD 21702 USA.
[Broder, Christopher C.] Uniformed Serv Univ Hlth Sci, Dept Microbiol & Immunol, Bethesda, MD 20814 USA.
[Wang, Lin-Fa] Duke Natl Univ Singapore Grad Med Sch, Program Emerging Infect Dis, Singapore 169857, Singapore.
[Wang, Jun] Univ Copenhagen, Novo Nordisk Fdn Ctr Basic Metab Res, DK-2200 Copenhagen, Denmark.
[Wang, Jun] Univ Copenhagen, Dept Biol, DK-2200 Copenhagen, Denmark.
RP Zhang, GJ (reprint author), BGI Shenzhen, Shenzhen 518083, Peoples R China.
EM zhanggj@genomics.org.cn; linfa.wang@csiro.au; wangj@genomics.org.cn
RI Baker, Michelle/C-9694-2013; Marsh, Glenn/A-5418-2013; Cowled,
Christopher/H-5308-2013; Crameri, Gary/H-8441-2013; Zhang,
Guojie/B-6188-2014; Zhou, Peng/I-8578-2015; Wang, Jun/C-8434-2016; Wang,
Jun/B-9503-2016
OI Marsh, Glenn/0000-0002-3469-1837; Cowled,
Christopher/0000-0002-1969-9371; Zhang, Guojie/0000-0001-6860-1521;
Zhou, Peng/0000-0003-1938-8255; Wang, Jun/0000-0002-8540-8931; Wang,
Jun/0000-0002-2113-5874
FU China National Genebank at Shenzhen; CSIRO; Australian Research Council
[FT110100234]; State Key Program for Basic Research [2011CB504701];
National Natural Science Foundation of China [81290341]; Defense Threat
Reduction Agency of the USA
FX We thank H. Field, C. Smith, and M. Yu for helping source genomic DNA;
K. Itahana and J. J. Boomsma for constructive discussion; and M. Cowled
for graphics assistance. We acknowledge financial support from the China
National Genebank at Shenzhen, CSIRO (Office of the Chief Executive
Science Leaders Award, Julius Award), The Australian Research Council
(FT110100234), State Key Program for Basic Research (2011CB504701),
National Natural Science Foundation of China (81290341), and the Defense
Threat Reduction Agency of the USA. The views expressed in this article
are those of the authors and do not necessarily reflect the official
policy or position of the Department of the Navy, Department of Defense,
or the U. S. government. K. A. B.-L. and K. G. F. are contractors for
the U. S. government. This work was prepared as part of their official
duties. Title 17 U. S. C. 105 provides that "Copyright protection under
this title is not available for any work of the United States
Government." Title 17 U. S. C. 101 defines a U. S. government work as a
work prepared by a military service member or employee of the U. S.
government as part of that person's official duties. P. alecto and M.
davidii genomes have been deposited at DNA Data Bank of Japan/European
Molecular Biology Laboratory/GenBank under the accession nos.
ALWS01000000 and ALWT01000000. Short-read data have been deposited into
the Short Read Archive under accession nos. SRA056924 and SRA056925. Raw
transcriptome data have been deposited in Gene Expression Omnibus as
GSE39933. Tree files and alignments have been submitted to TreeBASE
under Study Accession URL:
http://purl.org/phylo/treebase/phylows/study/TB2:S13654. We also thank
the editor and two anonymous reviewers for their helpful comments and
suggestions. Author contributions: J.W., L.-F.W., G.Z., C. C. B., and K.
A. B.-L. conceived the study. M. T., M. L. B., G. A. M., G. C., L. W.,
and Z.S. prepared the samples. G.Z., Z. H., X. F., Z. X., W. Z., Y. Zhu,
X.J., L. Y., J.X., Y. F., Y. C., X. S., Y. Zhang, K. G. F., K. A. B.-L.,
and J.W. performed genome sequencing, assembly, and annotation. G. Z.
and J.W. supervised genome sequencing, assembly, and annotation. G. Z.,
C. C., Z. H., X. F., J.W. W., Z. X., J.N., W. Z., P. Z., Y. Zhu, M. T.,
and M. L. B. performed genome analyses. G. Z., Z. H., C. C., and J.W. W.
carried out genetic analyses. G. Z., C. C., Z. H., X. F., P. Z., J.N.,
M. T., J.W. W., M. L. B., and L.-F.W. discussed the data. All authors
contributed to data interpretation. C. C. and J.W. W. wrote the paper
with significant contributions from G. Z., Z. H., P. Z., J.N., M. T., M.
L. B., and L.-F.W. and input from all authors. The authors declare no
competing financial interests. Requests for materials should be
addressed to the authors for correspondence.
NR 23
TC 135
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U1 19
U2 267
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD JAN 25
PY 2013
VL 339
IS 6118
BP 456
EP 460
DI 10.1126/science.1230835
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 076MN
UT WOS:000313960700046
PM 23258410
ER
PT J
AU Kutana, A
Erwin, SC
AF Kutana, Alex
Erwin, Steven C.
TI Nonpolar GaN films on high-index silicon: Lattice matching by design
SO PHYSICAL REVIEW B
LA English
DT Article
ID VAPOR-PHASE EPITAXY; ATOMIC-STRUCTURE; SURFACE RECONSTRUCTION;
ELASTIC-CONSTANTS; GALLIUM NITRIDE; SELECTIVE MOVPE; QUANTUM-WELLS;
SEMIPOLAR GAN; GROWTH; SUBSTRATE
AB We explore theoretically the possibility of growing GaN films in a nonpolar orientation on planar high-index Si(hhk) substrates. Candidate substrates were identified by requiring that they are well lattice matched, on a length scale of several unit cells, to GaN in the nonpolar m-plane orientation. These candidate orientations were then used to construct atomistic models of the GaN/Si(hhk) interface. Using density functional theory, we then computed the formation energies of these nonpolar interfaces and compared them to those of competing polar interfaces. We find that Si(112) and Si(113) offer potentially favorable substrates for the growth of nonpolar m-plane GaN. DOI: 10.1103/PhysRevB.87.045314
C1 [Kutana, Alex; Erwin, Steven C.] USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
RP Kutana, A (reprint author), USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA.
EM steve.erwin@nrl.navy.mil
FU Office of Naval Research; ASEE program at NRL
FX The authors thank Sergio Fernandez-Garrido for helpful and stimulating
discussions and Noam Bernstein and Stephen Hellberg for a critical
reading of the manuscript. This work was supported by the Office of
Naval Research and the ASEE program at NRL. Computations were performed
at the DoD Major Shared Resource Center at AFRL and at the DoD HPCMP
Open Research Systems.
NR 59
TC 4
Z9 4
U1 2
U2 55
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD JAN 25
PY 2013
VL 87
IS 4
AR 045314
DI 10.1103/PhysRevB.87.045314
PG 9
WC Physics, Condensed Matter
SC Physics
GA 077HZ
UT WOS:000314019800003
ER
PT J
AU Bertolo, L
Ewing, CP
Maue, A
Poly, F
Guerry, P
Monteiro, MA
AF Bertolo, Lisa
Ewing, Cheryl P.
Maue, Alexander
Poly, Frederic
Guerry, Patricia
Monteiro, Mario A.
TI The design of a capsule polysaccharide conjugate vaccine against
Campylobacter jejuni serotype HS15
SO CARBOHYDRATE RESEARCH
LA English
DT Article
DE Campylobacter jejuni; Conjugate vaccine; Diarrheal vaccine; Capsule
polysaccharide; 6-Deoxy-gulo-heptose
ID CHEMICAL-STRUCTURE; COLI; LIPOOLIGOSACCHARIDE; PATHOGENESIS; DIARRHEA;
UPDATE; SUGARS
AB Campylobacter jejuni infection is now the main cause of diarrhea-related illnesses in humans. An efficacious vaccine for the traveler and developing world market would be welcomed. We are engaged in the discovery and characterization of serotype-specific C. jejuni capsule polysaccharides (CPSs) to study their role in virulence and as protective vaccine antigens. Our prototype conjugate vaccine with serotype HS23 CPS (strain 81-176) has been shown to fully protect non-human primates against diarrhea inflicted by C. jejuni HS23, but ultimately, a useful CPS-based vaccine will have to be multivalent. To this end, we describe here the creation of a CPS-conjugate vaccine against C. jejuni serotype HS15. Structural analysis revealed that a repeating block consisting of L-alpha-arabinofuranose (Ara) and 6-deoxy-L-alpha-gulo-heptopyranose (6d-gulo-Hep) comprised the CPS of serotype HS15 type strain ATCC 43442 [-> 3)-alpha-L-Araf-(1 -> 3)-6d-L-alpha-gulo-Hepp(1 ->](n). Strategically, the non-reducing end of the CPS was activated and used in the attachment of CPS to CRM197 to yield a conjugate vaccine. A serological assessment of the CPSHS15-CRM197 conjugate with an anti-HS15 polyclonal antibody confirmed the conservation of antigenic epitopes, and subsequent inoculation of mice with CPSHS15-CRM197 revealed that this conjugate was indeed capable of raising anti-CPSHS15 antibodies. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [Bertolo, Lisa; Monteiro, Mario A.] Univ Guelph, Dept Chem, Guelph, ON N1G 2W1, Canada.
[Ewing, Cheryl P.; Maue, Alexander; Poly, Frederic; Guerry, Patricia] USN, Dept Enter Dis, Med Res Ctr, Silver Spring, MD 20910 USA.
RP Monteiro, MA (reprint author), Univ Guelph, Dept Chem, Guelph, ON N1G 2W1, Canada.
EM monteiro@uoguelph.ca
FU NSERC; Navy Work Unit [6000.RAD1.DA3.A0308]
FX Research at the University of Guelph was funded by NSERC. Work at NMRC
was funded by Navy Work Unit 6000.RAD1.DA3.A0308. The views expressed in
this manuscript are those of the authors and do not necessarily reflect
the official policy or position of the Department of the Navy,
Department of Defense, nor the U.S. government. P.G. is an employee of
the U.S. government and this work was prepared as part of her official
duties. Title 17 USC 105 provides that 'Copyright protection under this
title is not available for any work of the United States government.'
Title USC 101 defines a U.S. government work as a work prepared by a
military service member or employee of the U.S. government as part of
that person's official duties.
NR 28
TC 6
Z9 6
U1 5
U2 32
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0008-6215
J9 CARBOHYD RES
JI Carbohydr. Res.
PD JAN 25
PY 2013
VL 366
BP 45
EP 49
DI 10.1016/j.carres.2012.11.017
PG 5
WC Biochemistry & Molecular Biology; Chemistry, Applied; Chemistry, Organic
SC Biochemistry & Molecular Biology; Chemistry
GA 071CN
UT WOS:000313563400007
PM 23261782
ER
PT J
AU Parks, AD
Spence, SE
AF Parks, A. D.
Spence, S. E.
TI Paradoxical behavior in a triple cascade of Mach-Zehnder interferometers
SO JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
LA English
DT Article
ID WEAK-MEASUREMENT; COMPONENT; VALUES; SPIN
AB A gedanken experiment is considered using a cascade of three Mach-Zehnder interferometers (MZIs). The first MZI in the cascade is used to judiciously prepare the pre-selected state of a single photon launched into one of its input ports and the third MZI in the cascade is used to judiciously prepare the post-selected state of the photon emerging from one of its output ports. Paradoxical behavior arises when a weak measurement of photon occupation number is independently performed along each of the two paths emerging from the first MZI's output ports, i.e., the pointer associated with the weak measurement along one path registers a large positive occupation number and that for the weak measurement along the other path registers a large negative occupation number. Although each of these measurements contradicts the fact that there is only one photon in the interferometer, quantum mechanics resolves this paradox in an interesting way by ensuring that the sum of these occupation numbers is always 1.
C1 [Parks, A. D.; Spence, S. E.] USN, Electromagnet & Sensor Syst Dept, Surface Warfare Ctr Dahlgren, Dahlgren, VA 22448 USA.
RP Parks, AD (reprint author), USN, Electromagnet & Sensor Syst Dept, Surface Warfare Ctr Dahlgren, Dahlgren, VA 22448 USA.
EM allen.parks@navy.mil
FU Naval Innovation in Science and Engineering program; Naval Surface
Warfare Center Dahlgren Division
FX This research was supported by a grant from the Naval Innovation in
Science and Engineering program sponsored by the Naval Surface Warfare
Center Dahlgren Division.
NR 9
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U1 0
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1751-8113
J9 J PHYS A-MATH THEOR
JI J. Phys. A-Math. Theor.
PD JAN 25
PY 2013
VL 46
IS 3
AR 035303
DI 10.1088/1751-8113/46/3/035303
PG 5
WC Physics, Multidisciplinary; Physics, Mathematical
SC Physics
GA 059GZ
UT WOS:000312693700011
ER
PT J
AU Schall, JD
Harrison, JA
AF Schall, J. David
Harrison, Judith A.
TI Reactive Bond-Order Potential for Si-, C-, and H-Containing Materials
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID CHEMICAL-VAPOR-DEPOSITION; AB-INITIO CALCULATION; MICROWAVE PLASMA CVD;
SILICON-CARBIDE; CARBON-FILMS; HYDROGEN ABSTRACTION;
ELECTRONIC-STRUCTURE; MOLECULAR-DYNAMICS; GROWTH-MECHANISM;
TERSOFF-BRENNER
AB A new bond-order potential for modeling systems containing silicon, carbon, and hydrogen, such as organosilicon molecules (CxSiyHz), solid silicon, solid carbon, and alloys of silicon and carbon, is presented. This reactive potential utilizes the formalism of the second-generation reactive empirical bond-order potential (REBO) [Brenner et al. J. Phys.: Condens. Matter 2002, 14, 783] for hydrocarbons and the REBO parameters for silicon [Schall, Gao, Harrison. Phys. Rev. B 2008, 77, 115209]. Modifications to the hydrocarbon REBO potential were made to improve the description of three-atom type systems. The widespread use of Brenner's REBO potential, its ability to model a wide range of hydrocarbon materials, and the existence of parameters for several atom types are some of the motivating factors for obtaining this Si-C-H (2B-SiCH) parametrization. The usefulness and flexibility of this potential is demonstrated by examining the properties of organosilicon molecules, the bulk, surface, and defect properties of SiC, and the properties of amorphous silicon carbide.
C1 [Schall, J. David] Oakland Univ, Dept Mech Engn, Rochester, MI 48309 USA.
[Harrison, Judith A.] USN Acad, Dept Chem, Annapolis, MD 21402 USA.
RP Schall, JD (reprint author), Oakland Univ, Dept Mech Engn, Rochester, MI 48309 USA.
EM schall2@oakland.edu
FU National Science Foundation [IAA 1129629, CMMI 1129630]; AFOSR
[F1ATA00130G001]; Extreme Friction MURI [F1ATA09086G003]; United States
Naval Academy Office of Research
FX J.A.H. and J.D.S. acknowledge support from the National Science
Foundation grant numbers IAA 1129629 and CMMI 1129630. J.A.H. and J.D.S.
acknowledge partial support from AFOSR grant number F1ATA00130G001 and
as part of the Extreme Friction MURI (F1ATA09086G003). J.A.H. also
acknowledges support from the United States Naval Academy Office of
Research. The authors also thank Izabella Szulfarska for providing data
shown in Figure 5 and Lars Pastewka for carefully reviewing the spline
parameters and molecular energies.
NR 67
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U1 1
U2 51
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 JAN 24
PY 2013
VL 117
IS 3
BP 1323
EP 1334
DI 10.1021/jp3074688
PG 12
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 079XI
UT WOS:000314205100013
ER
PT J
AU Bandyopadhyay, PR
Leinhos, HA
Hellum, AM
AF Bandyopadhyay, Promode R.
Leinhos, Henry A.
Hellum, Aren M.
TI Handedness helps homing in swimming and flying animals
SO SCIENTIFIC REPORTS
LA English
DT Article
ID UNDERWATER VEHICLE; REYNOLDS-NUMBER; FISH; ASTYANAX; DYNAMICS; FLOWS;
CILIA; MODEL; WINGS
AB Swimming and flying animals rely on their ability to home on mobile targets. In some fish, physiological handedness and homing correlate, and dolphins exhibit handedness in their listening response. Here, we explore theoretically whether the actuators, sensors, and controllers in these animals follow similar laws of self-regulation, and how handedness affects homing. We find that the acoustic sensor (combined hydrophone-accelerometer) response maps are similar to fin force maps-modeled by Stuart-Landau oscillators-allowing localization by transitional vortex-propelled animals. The planar trajectories of bats in a room filled with obstacles are approximately reproduced by the states of a pair of strong and weak olivo-cerebellar oscillators. The stereoscopy of handedness reduces ambiguity near a mobile target, resulting in accelerated homing compared to even-handedness. Our results demonstrate how vortex-propelled animals may be localizing each other and circumventing obstacles in changing environments. Handedness could be useful in time-critical robot-assisted rescues in hazardous environments.
C1 [Bandyopadhyay, Promode R.; Leinhos, Henry A.; Hellum, Aren M.] USN, Autonomous & Defens Syst Dept, Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Bandyopadhyay, PR (reprint author), USN, Autonomous & Defens Syst Dept, 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
FX Support of this research came from the Office of Naval Research,
Biology-Inspired Autonomous Systems Program (ONR 341) to PRB. AMH was
supported by an ASEE-ONR Postdoctoral Fellowship. Helpful discussions
with Prof. R. Llinas and Prof. J. Simmons are gratefully acknowledged.
Prof. James Simmons is thanked for generously providing Fig. 5a.
NR 33
TC 7
Z9 7
U1 1
U2 32
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 2045-2322
J9 SCI REP-UK
JI Sci Rep
PD JAN 24
PY 2013
VL 3
AR 1128
DI 10.1038/srep01128
PG 9
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 081VM
UT WOS:000314350500006
PM 23350035
ER
PT J
AU Feenstra, RM
Srivastava, N
Gao, Q
Widom, M
Diaconescu, B
Ohta, T
Kellogg, GL
Robinson, JT
Vlassiouk, IV
AF Feenstra, R. M.
Srivastava, N.
Gao, Qin
Widom, M.
Diaconescu, Bogdan
Ohta, Taisuke
Kellogg, G. L.
Robinson, J. T.
Vlassiouk, I. V.
TI Low-energy electron reflectivity from graphene
SO PHYSICAL REVIEW B
LA English
DT Article
AB Low-energy reflectivity of electrons from single-and multilayer graphene is examined both theoretically and experimentally. A series of minima in the reflectivity over the energy range of 0-8 eV are found, with the number of minima depending on the number of graphene layers. Using first-principles computations, it is demonstrated that a freestanding n-layer graphene slab produces n - 1 reflectivity minima. This same result is also found experimentally for graphene supported on SiO2. For graphene bonded onto other substrates it is argued that a similar series of reflectivity minima is expected, although in certain cases an additional minimum occurs, at an energy that depends on the graphene-substrate separation and the effective potential in that space. DOI: 10.1103/PhysRevB.87.041406
C1 [Feenstra, R. M.; Srivastava, N.; Gao, Qin; Widom, M.] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
[Diaconescu, Bogdan; Ohta, Taisuke; Kellogg, G. L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Robinson, J. T.] USN, Res Lab, Washington, DC 20375 USA.
[Vlassiouk, I. V.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Feenstra, RM (reprint author), Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
RI Robinson, Jeremy/F-2748-2010; Feenstra, Randall/P-2530-2014; Widom,
Michael/P-2531-2014; Vlassiouk, Ivan/F-9587-2010
OI Feenstra, Randall/0000-0001-7120-5685; Widom,
Michael/0000-0001-5972-5696; Vlassiouk, Ivan/0000-0002-5494-0386
FU National Science Foundation; Office of Naval Research MURI program;
Office of Naval Research; US Department of Energy Office of Basic Energy
Sciences (BES), Division of Materials Science and Engineering; Sandia
LDRD; US Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]; NRL's Nanoscience Institute
FX Discussions with A. Locatelli, H. Petek, D. A. Stewart, and A. A.
Zakharov are gratefully acknowledged. This work was supported by the
National Science Foundation and by the Office of Naval Research MURI
program. The work at the Naval Research Laboratory was supported by the
Office of Naval Research and NRL's Nanoscience Institute. The work at
Sandia National Laboratories was supported by the US Department of
Energy 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 US
Department of Energy's National Nuclear Security Administration under
Contract No. DE-AC04-94AL85000.
NR 24
TC 24
Z9 24
U1 3
U2 54
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD JAN 24
PY 2013
VL 87
IS 4
AR 041406
DI 10.1103/PhysRevB.87.041406
PG 4
WC Physics, Condensed Matter
SC Physics
GA 076FQ
UT WOS:000313942300001
ER
PT J
AU Hoffer, ME
Balaban, C
Slade, MD
Tsao, JW
Hoffer, B
AF Hoffer, Michael E.
Balaban, Carey
Slade, Martin D.
Tsao, Jack W.
Hoffer, Barry
TI Amelioration of Acute Sequelae of Blast Induced Mild Traumatic Brain
Injury by N-Acetyl Cysteine: A Double-Blind, Placebo Controlled Study
SO PLOS ONE
LA English
DT Article
ID FOCAL CEREBRAL-ISCHEMIA; TYMPANIC MEMBRANE; RAT MODEL; NOISE;
ACETYLCYSTEINE; EXPOSURE; RELIABILITY; MECHANISMS; INDUCTION; PRESSURE
AB Background: Mild traumatic brain injury (mTBI) secondary to blast exposure is the most common battlefield injury in Southwest Asia. There has been little prospective work in the combat setting to test the efficacy of new countermeasures. The goal of this study was to compare the efficacy of N-acetyl cysteine (NAC) versus placebo on the symptoms associated with blast exposure mTBI in a combat setting.
Methods: This study was a randomized double blind, placebo-controlled study that was conducted on active duty service members at a forward deployed field hospital in Iraq. All symptomatic U. S. service members who were exposed to significant ordnance blast and who met the criteria for mTBI were offered participation in the study and 81 individuals agreed to participate. Individuals underwent a baseline evaluation and then were randomly assigned to receive either N-acetyl cysteine (NAC) or placebo for seven days. Each subject was re-evaluated at 3 and 7 days. Outcome measures were the presence of the following sequelae of mTBI: dizziness, hearing loss, headache, memory loss, sleep disturbances, and neurocognitive dysfunction. The resolution of these symptoms seven days after the blast exposure was the main outcome measure in this study. Logistic regression on the outcome of 'no day 7 symptoms' indicated that NAC treatment was significantly better than placebo (OR = 3.6, p = 0.006). Secondary analysis revealed subjects receiving NAC within 24 hours of blast had an 86% chance of symptom resolution with no reported side effects versus 42% for those seen early who received placebo.
Conclusion: This study, conducted in an active theatre of war, demonstrates that NAC, a safe pharmaceutical countermeasure, has beneficial effects on the severity and resolution of sequelae of blast induced mTBI. This is the first demonstration of an effective short term countermeasure for mTBI. Further work on long term outcomes and the potential use of NAC in civilian mTBI is warranted.
C1 [Hoffer, Michael E.] USN, Med Ctr, Dept Otolaryngol, Spatial Orientat Ctr, San Diego, CA 92152 USA.
[Balaban, Carey] Univ Pittsburgh, Dept Otolaryngol, Pittsburgh, PA 15260 USA.
[Balaban, Carey] Univ Pittsburgh, Dept Neurobiol, Pittsburgh, PA USA.
[Balaban, Carey] Univ Pittsburgh, Dept Commun Sci & Disorders, Pittsburgh, PA USA.
[Balaban, Carey] Univ Pittsburgh, Dept Bioengn, Pittsburgh, PA USA.
[Balaban, Carey; Slade, Martin D.] Yale Univ, Dept Internal Med, New Haven, CT USA.
[Tsao, Jack W.] USN, Bur Med & Surg, Wounded Ill & Injured Directorate M9, Washington, DC USA.
[Hoffer, Barry] Case Western Reserve Univ, Dept Neurosurg, Cleveland, OH 44106 USA.
RP Hoffer, ME (reprint author), USN, Med Ctr, Dept Otolaryngol, Spatial Orientat Ctr, San Diego, CA 92152 USA.
EM Michael.hoffer@med.navy.mil
OI Balaban, Carey/0000-0002-3570-3844
FU Department of Defense
FX Supported by the Department of Defense. The funders had no role in study
design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 46
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U1 3
U2 18
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD JAN 23
PY 2013
VL 8
IS 1
AR e54163
DI 10.1371/journal.pone.0054163
PG 10
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 077IQ
UT WOS:000314021500034
PM 23372680
ER
PT J
AU Peil, S
Crane, S
Hanssen, JL
Swanson, TB
Ekstrom, CR
AF Peil, Steven
Crane, Scott
Hanssen, James L.
Swanson, Thomas B.
Ekstrom, Christopher R.
TI Tests of local position invariance using continuously running atomic
clocks
SO PHYSICAL REVIEW A
LA English
DT Article
ID SPACE
AB Tests of local position invariance (LPI) made by comparing the relative redshift of atomic clocks based on different atoms have been carried out for a variety of pairs of atomic species. In most cases, several absolute frequency measurements per year are used to look for an annual signal, resulting in tests that can span on order of a decade. By using the output of continuously running clocks, we carry out LPI tests with comparable or higher precision after less than 1.5 years. These include new measurements of the difference in redshift anomalies beta for hyperfine transitions in Rb-87 and Cs-133 and in H-1 and Cs-133 and a measurement comparing Rb-87 and H-1, resulting in a stringent limit on LPI, beta(Rb) - beta(H) = (-2.7 +/- 4.9) x 10(-7). The method of making these measurements for continuous clocks is discussed. DOI: 10.1103/PhysRevA.87.010102
C1 [Peil, Steven; Crane, Scott; Hanssen, James L.; Swanson, Thomas B.; Ekstrom, Christopher R.] USN Observ, Washington, DC 20392 USA.
RP Peil, S (reprint author), USN Observ, Washington, DC 20392 USA.
EM steven.peil@usno.navy.mil
FU ONR; SPAWAR
FX We are indebted to Paul Koppang for providing clock data and an
understanding of the cesium ensemble, and we benefited from discussions
with Demetrios Matsakis. Atomic fountain development at USNO has been
funded by ONR and SPAWAR.
NR 17
TC 12
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U1 1
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD JAN 22
PY 2013
VL 87
IS 1
AR 010102
DI 10.1103/PhysRevA.87.010102
PG 4
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 076EI
UT WOS:000313938900001
ER
PT J
AU Golubov, AA
Mazin, II
AF Golubov, A. A.
Mazin, I. I.
TI Designing phase-sensitive tests for Fe-based superconductors
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID PAIRING SYMMETRY; STATE
AB We suggest experimental designs suitable to test pairing symmetry in multiband Fe-based superconductors. These designs are based on combinations of tunnel junctions and point contacts and should be accessible by existing sample fabrication techniques. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4788720]
C1 [Golubov, A. A.] Univ Twente, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands.
[Golubov, A. A.] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands.
[Mazin, I. I.] USN, Res Lab, Washington, DC 20375 USA.
RP Golubov, AA (reprint author), Univ Twente, Fac Sci & Technol, POB 217, NL-7500 AE Enschede, Netherlands.
RI Mazin, Igor/B-6576-2008
FU Dutch FOM; EU-Japan program "IRON SEA"
FX We thank A. Brinkman, G. Pepe, and Y. Tanaka for useful discussions and
acknowledge financial support from Dutch FOM and EU-Japan program "IRON
SEA." We are also thankful to the anonymous referee who has provided us
with a number of very useful comments.
NR 22
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U1 2
U2 31
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD JAN 21
PY 2013
VL 102
IS 3
AR 032601
DI 10.1063/1.4788720
PG 4
WC Physics, Applied
SC Physics
GA 077MU
UT WOS:000314032600061
ER
PT J
AU Vaxenburg, R
Lifshitz, E
Efros, A
AF Vaxenburg, R.
Lifshitz, E.
Efros, Al L.
TI Suppression of Auger-stimulated efficiency droop in nitride-based light
emitting diodes
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID QUANTUM-WELLS; RECOMBINATION
AB We calculate the rate of nonradiative Auger recombination in InGaN/GaN quantum wells with rectangular and smooth confining potentials. The calculations show that the rate of Auger recombination in rectangular quantum wells is sufficiently high to explain the efficiency droop in nitride-based light emitting diodes (LEDs). This rate, however, can be reduced by softening of the confining potential and a three-fold suppression is demonstrated in the studied quantum wells. The suppression of the Auger recombination rate improves LED radiative efficiency and reduces the droop effect, as we show using the standard recombination (ABC) model. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789364]
C1 [Vaxenburg, R.; Lifshitz, E.] Technion Israel Inst Technol, Schulich Fac Chem, Russell Berrie Nanotechnol Inst, IL-32000 Haifa, Israel.
[Vaxenburg, R.; Lifshitz, E.] Technion Israel Inst Technol, Schulich Fac Chem, Inst Solid State, IL-32000 Haifa, Israel.
[Efros, Al L.] USN, Res Lab, Washington, DC 20375 USA.
RP Vaxenburg, R (reprint author), Technion Israel Inst Technol, Schulich Fac Chem, Russell Berrie Nanotechnol Inst, IL-32000 Haifa, Israel.
RI Vaxenburg, Roman/P-8190-2016
FU USA-Israel Binational Science Foundation [2006-225]; US Office of Naval
Research
FX The authors thank A. Polkovnikov and C. Wetzel for valuable suggestions
and comments. R. V. expresses his gratitude to Mr. Seymour Schulich for
generous support. E. L. acknowledges support of USA-Israel Binational
Science Foundation (Project # 2006-225). A. L. E. acknowledges support
of the US Office of Naval Research.
NR 35
TC 41
Z9 42
U1 5
U2 99
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD JAN 21
PY 2013
VL 102
IS 3
AR 031120
DI 10.1063/1.4789364
PG 5
WC Physics, Applied
SC Physics
GA 077MU
UT WOS:000314032600021
ER
PT J
AU Christophersen, M
Fadeyev, V
Phlips, BF
Sadrozinski, HFW
Parker, C
Ely, S
Wright, JG
AF Christophersen, M.
Fadeyev, V.
Phlips, B. F.
Sadrozinski, H. F. -W.
Parker, C.
Ely, S.
Wright, J. G.
TI Alumina and silicon oxide/nitride sidewall passivation for P- and N-type
sensors
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE LHC; ATLAS; Radiation hardness; Slim edges
AB Silicon detectors normally have an inactive region along the perimeter of the sensor. In this paper we describe a "scribe, cleave, and passivate" (SCP) technique for the fabrication of slim edges in a post processing with finished detectors. The scribing was done by laser-scribing and etching. After scribing and cleaving steps, the sidewalls are passivated with a dielectric. We present results for n- and p-type sensors with different sidewall passivations. The leakage current depends strongly on the type of sidewall passivation. An alumina passivation leads to very low leakage currents for p-type sensors because of a negative interface charge. For n-type sensors, a hydrogenated silicon nitride shows the lowest leakage currents. Furthermore, we applied the technique to large area n-type single-sided strip detectors (cleaving length up to 3.5 cm). Published by Elsevier B.V.
C1 [Christophersen, M.; Phlips, B. F.] USN, Res Lab, Space Sci Div, Washington, DC 20375 USA.
[Fadeyev, V.; Sadrozinski, H. F. -W.; Parker, C.; Ely, S.; Wright, J. G.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
RP Christophersen, M (reprint author), USN, Res Lab, Space Sci Div, Code 7654, Washington, DC 20375 USA.
EM marc.christophersen@nrl.navy.mil
RI Christophersen, Marc/B-6795-2008
FU Office of Naval Research (ONR)
FX We would like to thank the Institute for Nanoscience (NSI) at the US
Naval Research Laboratory (NRL) and the NSI staff. This work has been
performed within the framework of the CERN RD50 Collaboration. The work
done at the NRL was sponsored by the Office of Naval Research (ONR).
NR 10
TC 17
Z9 17
U1 0
U2 16
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD JAN 21
PY 2013
VL 699
BP 14
EP 17
DI 10.1016/j.nima.2012.04.077
PG 4
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 060WO
UT WOS:000312809200003
ER
PT J
AU Mied, RP
Snow, CM
Smith, GB
Bachmann, CM
Korwan, DR
Fusina, RA
Vermillion, MS
Hagen, RA
AF Mied, Richard P.
Snow, Charlotte M.
Smith, Geoffrey B.
Bachmann, Charles M.
Korwan, Daniel R.
Fusina, Robert A.
Vermillion, Michael S.
Hagen, Rick A.
TI Tidal constituents from remote sensing image sequences
SO ESTUARINE COASTAL AND SHELF SCIENCE
LA English
DT Article
DE tidal constituents; tides; shorelines; coasts; digital elevation model;
bathymetry
ID WATERLINE EXTRACTION; MORPHODYNAMICS; DELTA; COASTLINES; SHORELINE;
POSITIONS; AMERICA; BIGHT; SAR
AB We address the problem of obtaining tidal constituents from a series of shoreline positions derived from time-sequential airborne imagery of the intertidal zone. A multi-sensor experiment (Bachmann et al., 2012) conducted at the Virginia Coast Reserve Long-Term Ecological Research (VCR LTER) site(1) supplied in-situ and airborne data. Hyperspectral and infrared shoreline imagery of the VCR LTER barrier islands, shallow lagoons, and mainland coastal areas as well as topographic LiDAR data were obtained from the same air platform over a nine-day period, and LiDAR and in-situ topographic beach surveys were used to specify the beach bathymetry and derive a Digital Elevation Model (DEM) over the primary area focused on in this paper at Wreck Island, VA. The DEM and shoreline positions are used to obtain a time sequence of tidal heights; these are found to be consistent with a time series from a GPS-equipped tide gage float anchored nearby. A least-squares fit of the five largest tidal constituents (M-2, N-2, S-2, O-1, K-1) to this one-week record indicates that the first three can be retrieved with only a +/- 15-20 % error, as determined by the one-year sea-surface height time series from a nearby NOAA Sea Surface Height (SSH) station at Wachapreague, VA.
The broader question of how many images are needed to obtain tidal constituents from an annual record is also addressed. Using SSH values from a NOAA tide gage station as a surrogate for image-derived SSH values, we progressively decimate a yearlong tide record, calculating its tidal constituents at each level of decimation. We find that that only one image every ten days is needed to retrieve the five largest tidal constituents to within a 10% error. Published by Elsevier Ltd.
C1 [Mied, Richard P.; Snow, Charlotte M.; Smith, Geoffrey B.; Bachmann, Charles M.; Korwan, Daniel R.; Fusina, Robert A.; Vermillion, Michael S.; Hagen, Rick A.] USN, Res Lab, Washington, DC 20375 USA.
RP Mied, RP (reprint author), USN, Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM mied@nrl.navy.mil
FU ONR [WU 72-6286]
FX This research was conducted under the ONR-funded project, "Tidal
constituents from remote sensing image sequences" (WU 72-6286). The
authors are indebted to Dr. Jon Sellars (NOAA) for processing the
sea-surface data from the GPS buoy.
NR 24
TC 1
Z9 1
U1 1
U2 16
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0272-7714
J9 ESTUAR COAST SHELF S
JI Estuar. Coast. Shelf Sci.
PD JAN 20
PY 2013
VL 117
BP 159
EP 167
DI 10.1016/j.ecss.2012.11.007
PG 9
WC Marine & Freshwater Biology; Oceanography
SC Marine & Freshwater Biology; Oceanography
GA 095GV
UT WOS:000315323600015
ER
PT J
AU Zank, GP
Heerikhuisen, J
Wood, BE
Pogorelov, NV
Zirnstein, E
McComas, DJ
AF Zank, G. P.
Heerikhuisen, J.
Wood, B. E.
Pogorelov, N. V.
Zirnstein, E.
McComas, D. J.
TI HELIOSPHERIC STRUCTURE: THE BOW WAVE AND THE HYDROGEN WALL
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE interplanetary medium; ISM: magnetic fields; local interstellar matter;
plasmas; shock waves; solar wind; Sun: heliosphere
ID LOCAL INTERSTELLAR-MEDIUM; LY-ALPHA ABSORPTION; INTERPLANETARY
MAGNETIC-FIELDS; BOUNDARY-EXPLORER OBSERVATIONS; NONUNIFORM SOLAR-WIND;
IBEX-LO OBSERVATIONS; TERMINATION SHOCK; OUTER HELIOSPHERE;
3-DIMENSIONAL FEATURES; NEUTRAL HYDROGEN
AB Recent IBEX observations indicate that the local interstellar medium (LISM) flow speed is less than previously thought (23.2 km s(-1) rather than 26 km s(-1)). Reasonable LISM plasma parameters indicate that the LISM flow may be either marginally super-fast magnetosonic or sub-fast magnetosonic. This raises two challenging questions: (1) Can a LISM model that is barely super-fast or sub-fast magnetosonic account for Ly alpha observations that rely critically on the additional absorption provided by the hydrogen wall (H-wall)? and (2) If the LISM flow is weakly super-fast magnetosonic, does the transition assume the form of a traditional shock or does neutral hydrogen (H) mediate shock dissipation and hence structure through charge exchange? Both questions are addressed using three three-dimensional self-consistently coupled magnetohydrodynamic plasma-kinetic H models with different LISM magnetic field strengths (2, 3, and 4 mu G) as well as plasma and neutral H number densities. The 2 and 3 mu G models are fast magnetosonic far upwind of the heliopause whereas the 4 mu G model is fully subsonic. The 2 mu G model admits a broad (similar to 50-75 AU) bow-shock-like structure. The 3 mu G model has a smooth super-fast-sub-fast magnetosonic transition that resembles a very broad, similar to 200 AU thick, bow wave. A theoretical analysis shows that the transition from a super-fast to a sub-fast magnetosonic downstream state is due to the charge exchange of fast neutral H and hot neutral H created in the supersonic solar wind and hot inner heliosheath, respectively. For both the 2 mu G and the 3 mu G models, the super-fast magnetosonic LISM flow passes through a critical point located where the fast magnetosonic Mach number M = 1 and Q(e) = gamma/(gamma - 1)U Q(m), where Q(e) and Q(m) are the plasma energy and momentum source terms due to charge exchange, U is the LISM flow speed, and. is the plasma adiabatic index. Because the Mach number is only barely super-fast magnetosonic in the 3 mu G case, the hot and fast neutral H can completely mediate the transition and impose a charge exchange length scale on the structure, making the solar-wind-LISM interaction effectively bow-shock-free. The charge exchange of fast and hot heliospheric neutral H therefore provides a primary dissipation mechanism at the weak heliospheric bow shock, in some cases effectively creating a one-shock heliosphere (i.e., a heliospheric termination shock only). Both super-fast magnetosonic models produce a sizeable H-wall. We find that (1) a sub-fast magnetosonic LISM flow cannot model the observed Ly alpha absorption profiles along the four sightlines considered (alpha Cen, 36 Oph, DK UMa, and chi(1) Ori-upwind, sidewind, and downwind respectively); (2) both the super-fast magnetosonic models can account for the Ly alpha observations, with possibly the bow-shock-free 3 mu G model being slightly favored. Subject to further modeling and comparison against further lines of sight, we conclude with the tantalizing possibility that IBEX may have discovered a class of interstellar shocks mediated by neutral H.
C1 [Zank, G. P.; Heerikhuisen, J.; Pogorelov, N. V.; Zirnstein, E.] Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35805 USA.
[Zank, G. P.; Heerikhuisen, J.; Pogorelov, N. V.] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA.
[Wood, B. E.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[McComas, D. J.] SW Res Inst, San Antonio, TX 78228 USA.
[McComas, D. J.] Univ Texas San Antonio, Dept Phys, San Antonio, TX 78249 USA.
RP Zank, GP (reprint author), Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35805 USA.
OI Heerikhuisen, Jacob/0000-0001-7867-3633
FU NASA [NNX08AJ33G, Subaward 37102-2, NNX09AG70G, NNX09AG63G, NNX09AJ79G,
NNG05EC85C]; NSF [ATM-0904007]; NESSF [NNX11AP91H]; [A991132BT];
[NNX09AP74A]; [NNX10AE46G]; [NNX09AW45G]; [NNH09AM47I]
FX We acknowledge the partial support of NASA grants NNX08AJ33G, Subaward
37102-2, NNX09AG70G, NNX09AG63G, NNX09AJ79G, NNG05EC85C, Subcontract
A991132BT, NNX09AP74A, NNX10AE46G, NNX09AW45G, and NNH09AM47I, and NSF
grant ATM-0904007. E.Z. acknowledges the support of an NESSF grant
NNX11AP91H. This work was carried out as a part of the IBEX mission,
which is part of NASA's Explorer Program.
NR 78
TC 66
Z9 67
U1 2
U2 13
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD JAN 20
PY 2013
VL 763
IS 1
AR 20
DI 10.1088/0004-637X/763/1/20
PG 13
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 069SH
UT WOS:000313456700020
ER
PT J
AU Ray, PS
Ransom, SM
Cheung, CC
Giroletti, M
Cognard, I
Camilo, F
Bhattacharyya, B
Roy, J
Romani, RW
Ferrara, EC
Guillemot, L
Johnston, S
Keith, M
Kerr, M
Kramer, M
Pletsch, HJ
Parkinson, PMS
Wood, KS
AF Ray, P. S.
Ransom, S. M.
Cheung, C. C.
Giroletti, M.
Cognard, I.
Camilo, F.
Bhattacharyya, B.
Roy, J.
Romani, R. W.
Ferrara, E. C.
Guillemot, L.
Johnston, S.
Keith, M.
Kerr, M.
Kramer, M.
Pletsch, H. J.
Parkinson, P. M. Saz
Wood, K. S.
TI RADIO DETECTION OF THE FERMI-LAT BLIND SEARCH MILLISECOND PULSAR
J1311-3430
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE pulsars: individual (PSR J1311-3430)
ID X-RAY; BINARY
AB We report the detection of radio emission from PSR J1311-3430, the first millisecond pulsar (MSP) discovered in a blind search of Fermi Large Area Telescope (LAT) gamma-ray data. We detected radio pulsations at 2 GHz, visible for <10% of similar to 4.5 hr of observations using the Green Bank Telescope (GBT). Observations at 5 GHz with the GBT and at several lower frequencies with Parkes, Nancay, and the Giant Metrewave Radio Telescope resulted in non-detections. We also report the faint detection of a steep spectrum continuum radio source (0.1 mJy at 5 GHz) in interferometric imaging observations with the Jansky Very Large Array. These detections demonstrate that PSR J1311-3430 is not radio quiet and provide additional evidence that radio-quiet MSPs are rare. The radio dispersion measure of 37.8 pc cm(-3) provides a distance estimate of 1.4 kpc for the system, yielding a gamma-ray efficiency of 30%, typical of LAT-detected MSPs. We see apparent excess delay in the radio pulses as the pulsar appears from eclipse and we speculate on possible mechanisms for the non-detections of the pulse at other orbital phases and observing frequencies.
C1 [Ray, P. S.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Ransom, S. M.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA.
[Cheung, C. C.] Natl Acad Sci, Washington, DC 20001 USA.
[Giroletti, M.] INAF Ist Radioastron, I-40129 Bologna, Italy.
[Cognard, I.] CNRS, LPCE, UMR 6115, F-45071 Orleans 02, France.
[Cognard, I.] Observ Paris, CNRS, Stn Radioastron Nancay, INSU, F-18330 Nancay, France.
[Camilo, F.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA.
[Camilo, F.] Arecibo Observ, Arecibo, PR 00612 USA.
[Bhattacharyya, B.] Interuniv Ctr Astron & Astrophys, Pune 411007, Maharashtra, India.
[Roy, J.] Tata Inst Fundamental Res, Natl Ctr Radio Astrophys, Pune 411007, Maharashtra, India.
[Romani, R. W.; Kerr, M.] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA.
[Romani, R. W.; Kerr, M.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Ferrara, E. C.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Guillemot, L.; Kramer, M.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Johnston, S.; Keith, M.] CSIRO Astron & Space Sci, Australia Telescope Natl Facil, Epping, NSW 1710, Australia.
[Kramer, M.] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England.
[Pletsch, H. J.] Albert Einstein Inst, Max Planck Inst Gravitat Phys, D-30167 Hannover, Germany.
[Pletsch, H. J.] Leibniz Univ Hannover, D-30167 Hannover, Germany.
[Parkinson, P. M. Saz] Univ Calif Santa Cruz, Dept Phys, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Parkinson, P. M. Saz] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
RP Ray, PS (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
EM Paul.Ray@nrl.navy.mil
RI Saz Parkinson, Pablo Miguel/I-7980-2013;
OI Giroletti, Marcello/0000-0002-8657-8852; Ransom,
Scott/0000-0001-5799-9714; Ray, Paul/0000-0002-5297-5278
FU Fermi Guest Observer Program; NRL; NASA [DPR S-15633-Y]; ASI-INAF
[I/009/10/0]
FX This work was partially supported by the Fermi Guest Observer Program,
administered by NASA. The work of C. C. C. was completed while under
contract with NRL and supported by NASA DPR S-15633-Y. M. G.
acknowledges financial contribution from the agreement ASI-INAF
I/009/10/0. We thank John Sarkissian for help with observations at
Parkes.
NR 23
TC 24
Z9 24
U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD JAN 20
PY 2013
VL 763
IS 1
AR L13
DI 10.1088/2041-8205/763/1/L13
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 071CY
UT WOS:000313564500013
ER
PT J
AU Ralston, ME
Day, LT
Slusher, TM
Musa, NL
Doss, HS
AF Ralston, Mark E.
Day, Louise T.
Slusher, Tina M.
Musa, Ndidiamaka L.
Doss, Helen S.
TI Global paediatric advanced life support: improving child survival in
limited-resource settings
SO LANCET
LA English
DT Review
ID DENGUE-SHOCK-SYNDROME; PAPUA-NEW-GUINEA; COMMUNITY-ACQUIRED PNEUMONIA;
ACUTE RESPIRATORY-INFECTIONS; EMERGENCY TRIAGE ASSESSMENT; POSITIVE
AIRWAY PRESSURE; CRITICALLY-ILL CHILDREN; DEVELOPING-COUNTRIES;
DEVELOPING-WORLD; CLINICAL SIGNS
AB Nearly all global mortality in children younger than 5 years (99%) occurs in developing countries. The leading causes of mortality in children younger than 5 years worldwide, pneumonia and diarrhoeal illness, account for 1.396 and 0.801 million annual deaths, respectively. Although important advances in prevention are being made, advanced life support management in children in developing countries is often incomplete because of limited resources. Existing advanced life support management guidelines for children in limited-resource settings are mainly empirical, rather than evidence-based, written for the hospital setting, not standardised with a systematic approach to patient assessment and categorisation of illness, and taught in current paediatric advanced life support training courses from the perspective of full-resource settings. In this Review, we focus on extension of higher quality emergency and critical care services to children in developing countries. When integrated into existing primary care programmes, simple inexpensive advanced life support management can improve child survival worldwide.
C1 [Ralston, Mark E.] Naval Hosp, Dept Pediat, Oak Harbor, WA 98278 USA.
[Ralston, Mark E.] Uniformed Serv Univ Hlth Sci, Dept Pediat, Bethesda, MD 20814 USA.
[Day, Louise T.] LAMB Hosp, Dept Pediat, Parbatipur 5250, Dinajpur, Bangladesh.
[Slusher, Tina M.] Univ Minnesota, Hennepin Cty Med Ctr, Pediat Intens Care Unit, Ctr Global Pediat, Minneapolis, MN 55415 USA.
[Musa, Ndidiamaka L.] Med Coll Wisconsin, Dept Pediat, Div Crit Care, Milwaukee, WI 53226 USA.
[Doss, Helen S.] SIL Clin, Ukarumpa, Papua N Guinea.
RP Ralston, ME (reprint author), Naval Hosp, Dept Pediat, Oak Harbor, WA 98278 USA.
EM mark.ralston@med.navy.mil
NR 116
TC 18
Z9 20
U1 0
U2 14
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0140-6736
J9 LANCET
JI Lancet
PD JAN 19
PY 2013
VL 381
IS 9862
BP 256
EP 265
PG 10
WC Medicine, General & Internal
SC General & Internal Medicine
GA 075LL
UT WOS:000313887600037
PM 23332963
ER
PT J
AU Moody, G
Singh, R
Li, H
Akimov, IA
Bayer, M
Reuter, D
Wieck, AD
Bracker, AS
Gammon, D
Cundiff, ST
AF Moody, G.
Singh, R.
Li, H.
Akimov, I. A.
Bayer, M.
Reuter, D.
Wieck, A. D.
Bracker, A. S.
Gammon, D.
Cundiff, S. T.
TI Influence of confinement on biexciton binding in semiconductor quantum
dot ensembles measured with two-dimensional spectroscopy
SO PHYSICAL REVIEW B
LA English
DT Article
ID FOURIER-TRANSFORM SPECTROSCOPY
AB The emission energy dependence of the biexciton binding energy is investigated in three semiconductor quantum dot (QD) systems that exhibit different quantum well -> QD confinement. Using two-dimensional Fourier-transform spectroscopy, we demonstrate that in strongly confining InAs QDs, the binding energy is independent of exciton emission energy and fluctuations in the ground state -> exciton transition energy are strongly correlated with those of the exciton -> biexciton. In contrast, the biexciton binding energy increases with emission energy in weakly confining interfacial GaAs QDs, and the level of correlation of exciton-biexciton broadening is reduced. A comparison with simulations reveals the significance of the strength and nature of confinement on Coulomb interactions responsible for biexciton renormalization. DOI: 10.1103/PhysRevB.87.041304
C1 [Moody, G.; Singh, R.; Li, H.; Cundiff, S. T.] Univ Colorado, JILA, Boulder, CO 80309 USA.
[Moody, G.; Singh, R.; Li, H.; Cundiff, S. T.] Natl Inst Stand & Technol, Boulder, CO 80309 USA.
[Moody, G.; Singh, R.; Cundiff, S. T.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
[Akimov, I. A.; Bayer, M.] Tech Univ Dortmund, D-44221 Dortmund, Germany.
[Akimov, I. A.] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia.
[Reuter, D.; Wieck, A. D.] Ruhr Univ Bochum, Lehrstuhl Angew Festkorperphys, D-44780 Bochum, Germany.
[Bracker, A. S.; Gammon, D.] USN, Res Lab, Washington, DC 20375 USA.
RP Moody, G (reprint author), Univ Colorado, JILA, Boulder, CO 80309 USA.
EM cundiff@jila.colorado.edu
RI Li, Hebin/A-8711-2009; Cundiff, Steven/B-4974-2009; Moody,
Galan/J-5811-2014; Wieck, Andreas Dirk/C-5129-2009
OI Cundiff, Steven/0000-0002-7119-5197; Moody, Galan/0000-0001-7263-1483;
Wieck, Andreas Dirk/0000-0001-9776-2922
FU Chemical Sciences, Geosciences, and Energy Biosciences Division, Office
of Basic Energy Science, Office of Science, US Department of Energy;
NSF; Deutsche Forschungsgemeinschaft
FX This work was financially supported by the Chemical Sciences,
Geosciences, and Energy Biosciences Division, Office of Basic Energy
Science, Office of Science, US Department of Energy, the NSF, and the
Deutsche Forschungsgemeinschaft.
NR 36
TC 25
Z9 25
U1 0
U2 35
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD JAN 18
PY 2013
VL 87
IS 4
AR 041304
DI 10.1103/PhysRevB.87.041304
PG 5
WC Physics, Condensed Matter
SC Physics
GA 073OD
UT WOS:000313751500001
ER
PT J
AU Solenov, D
Economou, SE
Reinecke, TL
AF Solenov, Dmitry
Economou, Sophia E.
Reinecke, T. L.
TI Fast two-qubit gates for quantum computing in semiconductor quantum dots
using a photonic microcavity
SO PHYSICAL REVIEW B
LA English
DT Article
ID CRYSTAL CAVITY; SPINS; NANOCAVITY; SYSTEM
AB Implementations for quantum computing require fast single- and multiqubit quantum gate operations. In the case of optically controlled quantum dot qubits, theoretical designs for long-range two-or multiqubit operations satisfying all the requirements in quantum computing are not yet available. We have developed a design for a fast, long-range two-qubit gate mediated by a photonic microcavity mode using excited states of the quantum-dot-cavity system that addresses these needs. This design does not require identical qubits, it is compatible with available optically induced single-qubit operations, and it advances opportunities for scalable architectures. We show that the gate fidelity can exceed 90% in experimentally accessible systems. DOI: 10.1103/PhysRevB.87.035308
C1 [Solenov, Dmitry; Economou, Sophia E.; Reinecke, T. L.] USN, Res Lab, Washington, DC 20375 USA.
RP Solenov, D (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM sophia.economou@nrl.navy.mil
RI Solenov, Dmitry/H-6250-2012
FU NSA/LPS; ONR
FX This work was supported in part by NSA/LPS and in part by ONR.
NR 32
TC 11
Z9 11
U1 0
U2 23
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD JAN 17
PY 2013
VL 87
IS 3
AR 035308
DI 10.1103/PhysRevB.87.035308
PG 7
WC Physics, Condensed Matter
SC Physics
GA 073NR
UT WOS:000313750200003
ER
PT J
AU Krall, J
Huba, JD
Joyce, G
Hei, M
AF Krall, J.
Huba, J. D.
Joyce, G.
Hei, Matthew
TI Simulation of the seeding of equatorial spread F by circular gravity
waves
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID TO-DAY VARIABILITY; IONOSPHERE; EVOLUTION; SHEAR
AB The Naval Research Laboratory three-dimensional simulation code SAMI3/ESF is used to study the response of the postsunset ionosphere to circular gravity waves. We model the coupling of both circular (local) and plane wave (nonlocal) gravity waves to the bottomside F layer as a mechanism for triggering equatorial plasma bubbles. Results support the hypothesis that nonplane gravity waves can more strongly couple to the F layer than plane gravity waves. Results also show that the coupling of the seed wave to the F layer depends on the (nonlocal) growth rate and the local electron density at the position of the seed wave. Citation: Krall, J., J. D. Huba, G. Joyce, and M. Hei (2013), Simulation of the seeding of equatorial spread F by circular gravity waves, Geophys. Res. Lett., 40, 1-5, doi: 10.1029/2012GL054022.
C1 [Krall, J.; Huba, J. D.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
[Hei, Matthew] CNR, NRC Postdoc, Washington, DC 20001 USA.
RP Krall, J (reprint author), USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
EM jonathan.krall@nrl.navy.mil
FU Naval Research Laboratory Base Funds; NASA
FX This work was supported by the Naval Research Laboratory Base Funds and
NASA.
NR 27
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U1 0
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD JAN 16
PY 2013
VL 40
IS 1
BP 1
EP 5
DI 10.1029/2012GL054022
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 129GF
UT WOS:000317826300001
ER
PT J
AU Huba, J
Krall, J
AF Huba, J.
Krall, J.
TI Modeling the plasmasphere with SAMI3
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID DENSITY MODEL; GLOBAL-MODEL
AB The study of the plasmasphere is extremely important to understanding space weather phenomena; for example, it plays a critical role in the regulation of radiation belt dynamics. In this paper, the first 3D simulation of the plasmasphere based on the first-principles physics model SAMI3 is presented. We include the co-rotation potential, the neutral wind dynamo potential, and a time-dependent Volland-Stern-Maynard-Chen potential to model the response of the convection potential to an idealized magnetic storm. We find that prior to the storm the plasmasphere is largely toroidal and symmetric in magnetic local time with He+/H+ similar to 5-10%. After the storm, the plasmasphere substantially contracts because plasma is convected away from the outer plasmasphere by the enhanced convection velocity. Moreover, a plume-like structure forms in the mid-afternoon sector because of the modified convection pattern associated with the storm. Additionally good agreement is found between the simulation results and data for the L-shell dependence of the equatorial electron density as well as the electron density along the field line at a given L-shell under quiet geomagnetic conditions. Citation: Huba, J., and J. Krall (2013), Modeling the plasmasphere with SAMI3, Geophys. Res. Lett., 40, 6-10, doi: 10.1029/2012GL054300.
C1 [Huba, J.; Krall, J.] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Huba, J (reprint author), USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
EM huba@ppd.nrl.navy.mil
FU LWS NASA grant; NRL Base Funds
FX We thank J. Fedder for a critical reading of the manuscript and the
referees for constructive comments. This research has been supported by
an LWS NASA grant and NRL Base Funds.
NR 23
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U1 3
U2 5
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
EI 1944-8007
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD JAN 16
PY 2013
VL 40
IS 1
BP 6
EP 10
DI 10.1029/2012GL054300
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 129GF
UT WOS:000317826300002
ER
PT J
AU Siskind, DE
Stevens, MH
Englert, CR
Mlynczak, MG
AF Siskind, David E.
Stevens, Michael H.
Englert, Christoph R.
Mlynczak, M. G.
TI Comparison of a photochemical model with observations of mesospheric
hydroxyl and ozone
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID UPPER-STRATOSPHERE; LOWER THERMOSPHERE; EXPLORER; PHOTODISSOCIATION;
SPECTROMETER; DEFICIT; CLO; O2; O-3; NM
AB We present a comparison of a photochemical model with mesospheric hydroxyl (OH) data from the Spatial Heterodyne Imager for Mesospheric Radicals (SHIMMER) and mesospheric ozone (O-3) data from the Sounding of the Atmosphere with Broadband Emission Radiometry (SABER). Although SHIMMER and SABER do not measure the atmosphere coincidently, by sampling the photochemical model at the appropriate local time of each measurement, an effective concurrent test of mesospheric odd oxygen and odd hydrogen theory can be achieved. Consistent with previous, more limited analyses of SHIMMER data, we find no evidence of a systematic model overprediction of mesospheric OH. However, at 80 km, the standard chemical scheme shows a model deficit in the morning hours and a dramatic model excess in the late afternoon. Using a higher rate coefficient for the H + O-2 + M -> HO2 + M reaction ameliorates this problem. Such a higher rate is consistent with the only reported laboratory measurements at the low temperatures appropriate to the mesosphere. Regarding the SABER ozone, the model significantly underpredicts the data. Some of this could be explained by a previously reported, systematic high bias to the SABER ozone, and comparisons of our model with Microwave Limb Sounder data support that suggestion. Nonetheless, a persistent model ozone deficit remains. Since the model agreement with SHIMMER OH is generally very good, this model ozone deficit is unlikely to be due to a mischaracterization of mesospheric HOx. Citation: Siskind, D. E., M. H. Stevens, and C. R. Englert (2013), Comparison of a photochemical model with observations of mesospheric hydroxyl and ozone, J. Geophys. Res. Atmos., 118, 195-207, doi: 10.1029/2012JD017971.
C1 [Siskind, David E.; Stevens, Michael H.; Englert, Christoph R.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Mlynczak, M. G.] NASA, Langley Res Ctr, Hampton, VA 23665 USA.
RP Siskind, DE (reprint author), USN, Res Lab, Div Space Sci, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM david.siskind@nrl.navy.mil
OI Englert, Christoph/0000-0002-2145-6168; Stevens,
Michael/0000-0003-1082-8955
FU NASA's Geospace SRT program; Office of Naval Research; DoD Space Test
Program; NASA Heliophysics Division; NASA AIM Explorer Science Project
FX This work was supported by a grant from the NASA's Geospace SR&T
program. SHIMMER was a joint program between NRL and the DoD Space Test
Program. Support was provided by the Office of Naval Research, the DoD
Space Test Program and the NASA Heliophysics Division. The NOGAPS-ALPHA
analysis, which was used to provide the inputs to the photochemical
model, was supported by the Office of Naval Research and the NASA AIM
Explorer Science Project. We also thank the SABER team and J. M.
Russell, PI, for helpful conversations about their data, the MLS team
for the access to their data, and T. Slanger for the references on
alternative ozone sources.
NR 47
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U1 0
U2 22
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD JAN 16
PY 2013
VL 118
IS 1
BP 195
EP 207
DI 10.1029/2012JD017971
PG 13
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 129JI
UT WOS:000317834900014
ER
PT J
AU Sunyakumthorn, P
Paris, DH
Chan, TC
Jones, M
Luce-Fedrow, A
Chattopadhyay, S
Jiang, J
Anantatat, T
Turner, GDH
Day, NPJ
Richards, AL
AF Sunyakumthorn, Piyanate
Paris, Daniel H.
Chan, Teik-Chye
Jones, Margaret
Luce-Fedrow, Alison
Chattopadhyay, Suchismita
Jiang, Ju
Anantatat, Tippawan
Turner, Gareth D. H.
Day, Nicholas P. J.
Richards, Allen L.
TI An Intradermal Inoculation Model of Scrub Typhus in Swiss CD-1 Mice
Demonstrates More Rapid Dissemination of Virulent Strains of Orientia
tsutsugamushi
SO PLOS ONE
LA English
DT Article
ID HOST DEFENSES; RICKETTSIAL INFECTIONS; CYNOMOLGUS MONKEYS; VACCINE
CANDIDATE; IMMUNE-RESPONSES; DENDRITIC CELLS; MACROPHAGES; RESISTANCE;
JAPAN; EPIDEMIOLOGY
AB Scrub typhus is an important endemic disease of the Asia-Pacific region caused by Orientia tsutsugamushi. To develop an effective vaccine to prevent scrub typhus infection, a better understanding of the initial host-pathogen interaction is needed. The objective of this study was to investigate early bacterial dissemination in a CD-1 Swiss outbred mouse model after intradermal injection of O. tsutsugamushi. Three human pathogenic strains of O. tsutsugamushi (Karp, Gilliam, and Woods) were chosen to investigate the early infection characteristics associated with bacterial virulence. Tissue biopsies of the intradermal injection site and draining lymph nodes were examined using histology and immunohistochemistry to characterize bacterial dissemination, and correlated with quantitative real-time PCR for O. tsutsugamushi in blood and tissue from major organs. Soluble adhesion molecules were measured to examine cellular activation in response to infection. No eschar formation was seen at the inoculation site and no clinical disease developed within the 7 day period of observation. However, O. tsutsugamushi was localized at the injection site and in the draining lymph nodes by day 7 post inoculation. Evidence of leukocyte and endothelial activation was present by day 7 with significantly raised levels of sL-selectin, sICAM-1 and sVCAM-1. Infection with the Karp strain was associated with earlier and higher bacterial loads and more extensive dissemination in various tissues than the less pathogenic Gilliam and Woods strains. The bacterial loads of O. tsutsugamushi were highest in the lungs and spleens of mice inoculated with Karp and Gilliam, but not Woods strains. Strains of higher virulence resulted in more rapid systemic infection and dissemination in this model. The CD-1 mouse intradermal inoculation model demonstrates features relevant to early scrub typhus infection in humans, including the development of regional lymphadenopathy, leukocyte activation and distant organ dissemination after low-dose intradermal injection with O. tsutsugamushi.
C1 [Sunyakumthorn, Piyanate; Chan, Teik-Chye; Luce-Fedrow, Alison; Chattopadhyay, Suchismita; Jiang, Ju; Richards, Allen L.] USN, Viral & Rickettsial Dis Dept, Med Res Ctr, Silver Spring, MD USA.
[Sunyakumthorn, Piyanate; Paris, Daniel H.; Anantatat, Tippawan; Turner, Gareth D. H.; Day, Nicholas P. J.] Mahidol Univ, Mahidol Oxford Trop Med Res Unit, Bangkok 10700, Thailand.
[Jones, Margaret; Turner, Gareth D. H.] Univ Oxford, Nuffield Dept Clin Lab Sci, Oxford, England.
[Richards, Allen L.] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA.
RP Richards, AL (reprint author), USN, Viral & Rickettsial Dis Dept, Med Res Ctr, Silver Spring, MD USA.
EM Allen.Richards@med.navy.mil
FU U.S. Military Infectious Diseases Research Program [A0310]; Wellcome
Trust of Great Britain [089275/Z/09/Z]
FX This work was funded by the U.S. Military Infectious Diseases Research
Program, work unit number A0310, and by the Wellcome Trust of Great
Britain, grant 089275/Z/09/Z. The funders had no role in study design,
data collection and analysis, decision to publish, or preparation of the
manuscript.
NR 31
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U1 0
U2 0
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD JAN 16
PY 2013
VL 8
IS 1
AR e54570
DI 10.1371/journal.pone.0054570
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 072OV
UT WOS:000313682700128
PM 23342173
ER
PT J
AU Doukas, WC
Hayda, RA
Frisch, HM
Andersen, RC
Mazurek, MT
Ficke, JR
Keeling, JJ
Pasquina, PF
Wain, HJ
Carlini, AR
MacKenzie, EJ
AF Doukas, William C.
Hayda, Roman A.
Frisch, H. Michael
Andersen, Romney C.
Mazurek, Michael T.
Ficke, James R.
Keeling, John J.
Pasquina, Paul F.
Wain, Harold J.
Carlini, Anthony R.
MacKenzie, Ellen J.
TI The Military Extremity Trauma Amputation/Limb Salvage (METALS) Study
Outcomes of Amputation Versus Limb Salvage Following Major
Lower-Extremity Trauma
SO JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME
LA English
DT Article
ID MENTAL-HEALTH PROBLEMS; OPERATION IRAQI FREEDOM; MUSCULOSKELETAL
FUNCTION ASSESSMENT; POSTTRAUMATIC-STRESS; PHYSICAL-ACTIVITY; ENDURING
FREEDOM; COMBAT; AFGHANISTAN; VETERANS; WAR
AB Background: The study was performed to examine the hypothesis that functional outcomes following major lower-extremity trauma sustained in the military would be similar between patients treated with amputation and those who underwent limb salvage.
Methods: This is a retrospective cohort study of 324 service members deployed to Afghanistan or Iraq who sustained a lower-limb injury requiring either amputation or limb salvage involving revascularization, bone graft/bone transport, local/free flap coverage, repair of a major nerve injury, or a complete compartment injury/compartment syndrome. The Short Musculoskeletal Function Assessment (SMFA) questionnaire was used to measure overall function. Standard instruments were used to measure depression (the Center for Epidemiologic Studies Depression Scale), posttraumatic stress disorder (PTSD Checklist-military version), chronic pain (Chronic Pain Grade Scale), and engagement in sports and leisure activities (Paffenbarger Physical Activity Questionnaire). The outcomes of amputation and salvage were compared by using regression analysis with adjustment for age, time until the interview, military rank, upper-limb and bilateral injuries, social support, and intensity of combat experiences.
Results: Overall response rates were modest (59.2%) and significantly different between those who underwent amputation (64.5%) and those treated with limb salvage (55.4%) (p = 0.02). In all SMFA domains except arm/hand function, the patients scored significantly worse than population norms. Also, 38.3% screened positive for depressive symptoms and 17.9%, for posttraumatic stress disorder (PTSD). One-third (34.0%) were not working, on active duty, or in school. After adjustment for covariates, participants with an amputation had better scores in all SMFA domains compared with those whose limbs had been salvaged (p < 0.01). They also had a lower likelihood of PTSD and a higher likelihood of being engaged in vigorous sports. There were no significant differences between the groups with regard to the percentage of patients with depressive symptoms, pain interfering with daily activities (pain interference), or work/school status.
Conclusions: Major lower-limb trauma sustained in the military results in significant disability. Service members who undergo amputation appear to have better functional outcomes than those who undergo limb salvage. Caution is needed in interpreting these results as there was a potential for selection bias.
C1 Walter Reed Natl Mil Med Ctr, Washington, DC USA.
San Antonio Mil Med Ctr, Ft Sam Houston, TX USA.
USN, Med Ctr, San Diego, CA 92152 USA.
Johns Hopkins Bloomberg Sch Publ Hlth, Baltimore, MD USA.
EM wcdoukas@ma.rr.com; Roman_Hayda@brown.edu; pdrhmf@msj.org;
Romney.andersen@us.army.mil; james.ficke@amedd.army.mil;
john.keeling@med.navy.mil; Paul.Pasquina@na.ameddarmy.mil;
Harold.wain@na.amedd.army.mil; acarlini@jhsph.edu; emackenz@jhsph.edu
NR 38
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Z9 53
U1 3
U2 26
PU JOURNAL BONE JOINT SURGERY INC
PI NEEDHAM
PA 20 PICKERING ST, NEEDHAM, MA 02192 USA
SN 0021-9355
J9 J BONE JOINT SURG AM
JI J. Bone Joint Surg.-Am. Vol.
PD JAN 16
PY 2013
VL 95A
IS 2
BP 138
EP 145
DI 10.2106/JBJS.K.00734
PG 8
WC Orthopedics; Surgery
SC Orthopedics; Surgery
GA 076BO
UT WOS:000313931700008
PM 23324961
ER
PT J
AU Stine, R
Mulvaney, SP
Robinson, JT
Tamanaha, CR
Sheehan, PE
AF Stine, Rory
Mulvaney, Shawn P.
Robinson, Jeremy T.
Tamanaha, Cy R.
Sheehan, Paul E.
TI Fabrication, Optimization, and Use of Graphene Field Effect Sensors
SO ANALYTICAL CHEMISTRY
LA English
DT Review
ID EFFECT-TRANSISTOR; EPITAXIAL GRAPHENE; GRAPHITE OXIDE; LARGE-AREA;
SENSING APPLICATIONS; TRANSPORT-PROPERTIES; SELECTIVE DETECTION; COPPER
FOILS; HIGH-QUALITY; LARGE-SCALE
C1 [Stine, Rory] Nova Res, Alexandria, VA 22308 USA.
[Mulvaney, Shawn P.; Tamanaha, Cy R.; Sheehan, Paul E.] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
[Robinson, Jeremy T.] USN, Res Lab, Div Elect Sci & Technol, Washington, DC 20375 USA.
RP Stine, R (reprint author), Nova Res, 1900 Elkins St,Suite 230, Alexandria, VA 22308 USA.
RI Robinson, Jeremy/F-2748-2010; Stine, Rory/C-6709-2013; Sheehan,
Paul/B-4793-2010
OI Sheehan, Paul/0000-0003-2668-4124
FU Office of Naval Research through basic programs at NRL
FX This work was supported in part by the Office of Naval Research through
basic programs at NRL. We thank James Champlain for helpful discussions.
NR 151
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U1 5
U2 224
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 JAN 15
PY 2013
VL 85
IS 2
SI SI
BP 509
EP 521
DI 10.1021/ac303190w
PG 13
WC Chemistry, Analytical
SC Chemistry
GA 072JY
UT WOS:000313668400005
PM 23234380
ER
PT J
AU Singh, M
Sanborn, A
AF Singh, Mohenish
Sanborn, Adam
TI Painful Red Eye
SO AMERICAN FAMILY PHYSICIAN
LA English
DT Editorial Material
C1 [Singh, Mohenish; Sanborn, Adam] Naval Hosp, Jacksonville, FL USA.
RP Singh, M (reprint author), Naval Hosp, Jacksonville, FL USA.
EM Mohenish.Singh@med.navy.mil
NR 4
TC 0
Z9 0
U1 0
U2 2
PU AMER ACAD FAMILY PHYSICIANS
PI KANSAS CITY
PA 8880 WARD PARKWAY, KANSAS CITY, MO 64114-2797 USA
SN 0002-838X
J9 AM FAM PHYSICIAN
JI Am. Fam. Physician
PD JAN 15
PY 2013
VL 87
IS 2
BP 127
EP 128
PG 2
WC Primary Health Care; Medicine, General & Internal
SC General & Internal Medicine
GA 077GT
UT WOS:000314016600007
PM 23317077
ER
PT J
AU Meijerink, R
Kristensen, LE
Weiss, A
van der Werf, PP
Walter, F
Spaans, M
Loenen, AF
Fischer, J
Israel, FP
Isaak, K
Papadopoulos, PP
Aalto, S
Armus, L
Charmandaris, V
Dasyra, KM
Diaz-Santos, T
Evans, A
Gao, Y
Gonzalez-Alfonso, E
Gusten, R
Henkel, C
Kramer, C
Lord, S
Martin-Pintado, J
Naylor, D
Sanders, DB
Smith, H
Spinoglio, L
Stacey, G
Veilleux, S
Wiedner, MC
AF Meijerink, R.
Kristensen, L. E.
Weiss, A.
van der Werf, P. P.
Walter, F.
Spaans, M.
Loenen, A. F.
Fischer, J.
Israel, F. P.
Isaak, K.
Papadopoulos, P. P.
Aalto, S.
Armus, L.
Charmandaris, V.
Dasyra, K. M.
Diaz-Santos, T.
Evans, A.
Gao, Y.
Gonzalez-Alfonso, E.
Guesten, R.
Henkel, C.
Kramer, C.
Lord, S.
Martin-Pintado, J.
Naylor, D.
Sanders, D. B.
Smith, H.
Spinoglio, L.
Stacey, G.
Veilleux, S.
Wiedner, M. C.
TI EVIDENCE FOR CO SHOCK EXCITATION IN NGC 6240 FROM HERSCHEL SPIRE
SPECTROSCOPY
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE galaxies: active; galaxies: individual (NGC 6240); galaxies: nuclei;
galaxies: starburst; infrared: galaxies
ID LUMINOUS INFRARED GALAXIES; MOLECULAR GAS; STAR-FORMATION; ARP 220;
MARKARIAN 231; NGC-6240; DIAGNOSTICS; NUCLEI; DENSE; ENVIRONMENTS
AB We present Herschel SPIRE FTS spectroscopy of the nearby luminous infrared galaxy NGC 6240. In total 20 lines are detected, including CO J = 4-3 through J = 13-12, 6 H2O rotational lines, and [C I] and [N II] fine-structure lines. The CO to continuum luminosity ratio is 10 times higher in NGC 6240 than Mrk 231. Although the CO ladders of NGC 6240 and Mrk 231 are very similar, UV and/or X-ray irradiation are unlikely to be responsible for the excitation of the gas in NGC 6240. We applied both C and J shock models to the H-2 v = 1-0 S(1) and v = 2-1 S(1) lines and the CO rotational ladder. The CO ladder is best reproduced by a model with shock velocity v(s) = 10 km s(-1) and a pre-shock density n(H) = 5 x 10(4) cm(-3). We find that the solution best fitting the H-2 lines is degenerate. The shock velocities and number densities range between v(s) = 17-47 km s(-1) and n(H) = 10(7)-5x10(4) cm(-3), respectively. The H-2 lines thus need a much more powerful shock than the CO lines. We deduce that most of the gas is currently moderately stirred up by slow (10 km s(-1)) shocks while only a small fraction (less than or similar to 1%) of the interstellar medium is exposed to the high-velocity shocks. This implies that the gas is rapidly losing its highly turbulent motions. We argue that a high CO line-to-continuum ratio is a key diagnostic for the presence of shocks.
C1 [Meijerink, R.; Spaans, M.] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands.
[Meijerink, R.; Kristensen, L. E.; van der Werf, P. P.; Loenen, A. F.; Israel, F. P.] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands.
[Weiss, A.; Papadopoulos, P. P.; Guesten, R.; Henkel, C.] Max Planck Inst Radioastron, D-53121 Bonn, Germany.
[Walter, F.] Max Planck Inst Astron, D-69117 Heidelberg, Germany.
[Fischer, J.] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA.
[Isaak, K.] Estec, ESA Astrophys Miss Div, NL-2200 AG Noordwijk, Netherlands.
[Aalto, S.] Chalmers, Onsala Observ, Dept Radio & Space Sci, SE-43992 Onsala, Sweden.
[Armus, L.; Diaz-Santos, T.] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA.
[Charmandaris, V.] Univ Crete, Dept Phys, GR-71003 Iraklion, Greece.
[Dasyra, K. M.] Observ Paris, LERMA CNRS UMR8112, F-75014 Paris, France.
[Evans, A.] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.
[Evans, A.] Natl Radio Astron Observ, Charlottesville, VA 22903 USA.
[Gao, Y.] Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China.
[Gonzalez-Alfonso, E.] Univ Alcala de Henares, Dept Fis, E-28871 Madrid, Spain.
[Henkel, C.] King Abdulaziz Univ, Dept Astron, Jeddah 21413, Saudi Arabia.
[Kramer, C.] IRAM, E-18012 Granada, Spain.
[Lord, S.] CALTECH, NASA Herschel Sci Ctr, Pasadena, CA 91125 USA.
[Martin-Pintado, J.] CSIC, Inst Estruct Mat, Dept Astrofis Mol & Infrarroja, E-28006 Madrid, Spain.
[Naylor, D.] Univ Lethbridge, Dept Phys & Astron, Inst Space Imaging Sci, Lethbridge, AB T1K 3M4, Canada.
[Sanders, D. B.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.
[Smith, H.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Spinoglio, L.] INAF, Ist Astrofis & Planetol Spaziali, I-00133 Rome, Italy.
[Stacey, G.] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA.
[Veilleux, S.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[Wiedner, M. C.] Observ Paris, LERMA, CNRS, F-75014 Paris, France.
RP Meijerink, R (reprint author), Univ Groningen, Kapteyn Astron Inst, POB 800, NL-9700 AV Groningen, Netherlands.
RI Charmandaris, Vassilis/A-7196-2008; Kristensen, Lars/F-4774-2011;
Martin-Pintado, Jesus/H-6107-2015;
OI Charmandaris, Vassilis/0000-0002-2688-1956; Kristensen,
Lars/0000-0003-1159-3721; Martin-Pintado, Jesus/0000-0003-4561-3508;
Meijerink, Rowin/0000-0001-7584-9293; Dasyra,
Kalliopi/0000-0002-1482-2203; Spinoglio, Luigi/0000-0001-8840-1551
FU CSA in Canada; NAOC in China; CNES in France; CNRS in France; CEA in
France; ASI in Italy; MEC in Spain; Stockholm Observatory in Sweden;
STFC in the UK; NASA in the USA; ESA; NHSC; US ONR
FX We acknowledge the constructive comments by the referee Christine
Wilson. The following institutes have provided hardware and software
elements to the SPIRE project: University of Lethbridge, Canada; NAOC,
Beijing, China; CEA Saclay, CEA Grenoble and LAM in France; IFSI, Rome,
and University of Padua, Italy; IAC, Tenerife, Spain; Stockholm
Observatory, Sweden; Cardiff University, Imperial College London,
UCL-MSSL, STFCRAL, UK ATC Edinburgh, and the University of Sussex in the
UK. Funding for SPIRE has been provided by the national agencies of the
participating countries and by internal institute funding: CSA in
Canada; NAOC in China; CNES, CNRS, and CEA in France; ASI in Italy; MEC
in Spain; Stockholm Observatory in Sweden; STFC in the UK; and NASA in
the USA. Additional funding support for some instrument activities has
been provided by ESA. US authors acknowledge support from the NHSC.
Basic research in IR astronomy at NRL is funded by the US ONR.
NR 29
TC 47
Z9 47
U1 0
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
EI 2041-8213
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD JAN 10
PY 2013
VL 762
IS 2
AR L16
DI 10.1088/2041-8205/762/2/L16
PG 5
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 237ND
UT WOS:000325876300001
ER
PT J
AU Boyd, DA
Shields, AR
Naciri, J
Ligler, FS
AF Boyd, Darryl A.
Shields, Adam R.
Naciri, Jawad
Ligler, Frances S.
TI Hydrodynamic Shaping, Polymerization, and Subsequent Modification of
Thiol Click Fibers
SO ACS APPLIED MATERIALS & INTERFACES
LA English
DT Article
DE click chemistry; hydrodynamic focusing; microfibers; microfluidics;
thiol-ene; thiol-yne
ID ENE; CHEMISTRY; PHOTOPOLYMERIZATIONS; NETWORKS
AB Hydrodynamic focusing in microfluidic channels is used to produce highly uniform, shaped polymer fibers at room temperature and under "green" conditions. Core streams of thiol-ene and thiol-yne prepolymer solutions were guided using a phase-matched sheath stream through microfluidic channels with grooved walls to determine shape. Size was dictated by the ratio of the flow rates of the core and sheath streams. Thiol click reactions were initiated using UV illumination to lock in predesigned cross-sectional shapes and sizes. This approach proved to be much more flexible than electrospinning in that highly uniform fibers can be produced from prepolymer solutions with varying compositions and viscosities with made-to-order sizes and shapes. Furthermore, a very simple manipulation of the composition provided reactive groups on the fiber surface for attachment of active ligands and biological components. A proof-of-principle experiment demonstrated that biotin attached to thiol groups on the fiber surface could specifically bind a fluorescent protein.
C1 [Boyd, Darryl A.; Shields, Adam R.; Naciri, Jawad; Ligler, Frances S.] USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
RP Ligler, FS (reprint author), USN, Res Lab, Ctr Biomol Sci & Engn, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM frances.ligler@nrl.navy.mil
RI Boyd, Darryl/F-4269-2016
OI Boyd, Darryl/0000-0001-7327-2443
FU ONR/NRL Work Unit 9899
FX The authors wish to thank Chris R. Taitt, Christopher M. Spillmann,
Peter B. Howell, and Peter Matic for helpful suggestions during the
course of these experiments. We would also like to acknowledge a summer
student, Colleen O'Neil, for work she did related to this project.
Darryl A. Boyd and Adam R. Shields are National Research Council
Postdoctoral Fellows. The work was supported by ONR/NRL Work Unit 9899.
The views are those of the authors and do not represent the opinion or
policy of the U.S. Navy or Department of Defense.
NR 29
TC 18
Z9 18
U1 4
U2 94
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1944-8244
J9 ACS APPL MATER INTER
JI ACS Appl. Mater. Interfaces
PD JAN 9
PY 2013
VL 5
IS 1
BP 114
EP 119
DI 10.1021/am3022834
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
SC Science & Technology - Other Topics; Materials Science
GA 065JE
UT WOS:000313143800017
PM 23215013
ER
PT J
AU McCarthy, ED
Zammarano, M
Fox, DM
Nieuwendaal, RC
Kim, YS
Maupin, PH
Trulove, PC
Gilman, JW
AF McCarthy, Edward D.
Zammarano, Mauro
Fox, Douglas M.
Nieuwendaal, Ryan C.
Kim, Yeon S.
Maupin, Paul H.
Trulove, Paul C.
Gilman, Jeffrey W.
TI Formation of extended ionomeric network by bulk polymerization of
L,D-lactide with layered-double-hydroxide
SO POLYMER
LA English
DT Article
DE Nanocomposite; Polylactide; Poly(lactic acid)
ID POLY(LACTIC ACID); L-LACTIDE; POLYLACTONES; NANOCOMPOSITES; NMR;
POLY(L-LACTIDE); NANOPARTICLES; DELIVERY; CATALYST; BEHAVIOR
AB We report the formation of an ionomeric network in a poly(L,D-lactide) hybrid nanocomposite, (PLDLA-HYB) during in-situ melt polymerization of L,D-lactide in the presence of magnesium/aluminum layered-double-hydroxide (LDH) without added catalyst.
The effect of LDH mass loading and reaction time on molecular mass and yield of soluble poly(L,D-lactide) (PLDLA-SOL) present in the hybrid was investigated for a better understanding of the conflicting roles of LDH in polymerization and degradation of PLDLA-SOL. High molecular mass PLDLA-SOL is obtained through initiation of polymerization by LDH. However an additional insoluble organic-inorganic fraction, INSOL, is also observed within the product when PLDLA-SOL is extracted using methylene chloride as solvent. It is proposed that INSOL is an ionomeric network comprising hydrogen-bonded, or otherwise co-ordinated, lactic acid monomer salts of magnesium, together with PLDLA in a 24%-76% mass ratio. (C) 2012 Elsevier Ltd. All rights reserved.
C1 [McCarthy, Edward D.; Zammarano, Mauro; Nieuwendaal, Ryan C.; Gilman, Jeffrey W.] NIST, Mat Sci & Engn Div, Mat Measurement Lab, Gaithersburg, MD 20899 USA.
[Zammarano, Mauro; Kim, Yeon S.] NIST, Engn Lab, Gaithersburg, MD 20899 USA.
[Zammarano, Mauro; Fox, Douglas M.] American Univ, Dept Chem, Washington, DC 20016 USA.
[Maupin, Paul H.] Off Basic Energy Sci, Dept Energy, Chem Sci Geosci & Biosci Div, Washington, DC 20585 USA.
[Trulove, Paul C.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
RP Gilman, JW (reprint author), NIST, Mat Sci & Engn Div, Mat Measurement Lab, 100 Bur Dr, Gaithersburg, MD 20899 USA.
EM jeffrey.gilman@nist.gov
RI KIM, YEON SEOK/J-5864-2012
FU Air Force Office of Scientific Research [F1ATA00236G002,
FA9550-10-1-0323]
FX This material is based upon work supported by the Air Force Office of
Scientific Research under Award Nos. F1ATA00236G002 and
FA9550-10-1-0323.
NR 36
TC 2
Z9 2
U1 3
U2 22
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0032-3861
J9 POLYMER
JI Polymer
PD JAN 8
PY 2013
VL 54
IS 1
BP 90
EP 101
DI 10.1016/j.polymer.2012.11.037
PG 12
WC Polymer Science
SC Polymer Science
GA 190QT
UT WOS:000322356000012
ER
PT J
AU Liu, JL
Zabetakis, D
Acevedo-Velez, G
Goldman, ER
Anderson, GP
AF Liu, Jinny L.
Zabetakis, Dan
Acevedo-Velez, Glendalys
Goldman, Ellen R.
Anderson, George P.
TI Comparison of an antibody and its recombinant derivative for the
detection of the small molecule explosive 2,4,6-trinitrotoluene
SO ANALYTICA CHIMICA ACTA
LA English
DT Article
DE Single chain antibody; Surface plasmon resonance; Circular dichroism;
Competitive immunoassay; Explosive detection; MAGPIX; Magplex
microspheres
ID SINGLE-DOMAIN ANTIBODIES; CHAIN VARIABLE FRAGMENT; NITROAROMATIC
COMPOUNDS; ESCHERICHIA-COLI; LIGAND-BINDING; TNT-ANTIBODIES; SYSTEMS;
HAPTEN; DEOXYNIVALENOL; IMMUNOGLOBULIN
AB Antibodies are commonly used as recognition elements in immunoassays because of their high specificity and affinity, and have seen extensive use in competitive assays for the detection of small molecules. However, these complex molecules require production either in animals or by mammalian cell cultures, and are not easily tailored through genetic manipulation. Single chain antibodies (scFv), recombinantly expressed molecules consisting of only the antibody's binding region joined via a linking peptide, can provide an alternative to intact antibodies. We describe the characterization of a new monoclonal antibody (mAb), 2G5B5, able to detect the small molecule explosive 2,4,6-trinitrotoluene (TNT) and the scFv derived from its variable regions. The mAb and scFv were tested by surface plasmon resonance to determine their affinity for an immobilized TNT surrogate; dissociation constants were determined to be 1.5 x 10(-13) M and 4.8 x 10(-10) M respectively. Circular dichroism was used to determine their melting temperatures. The mAb is more stable melting at similar to 75 degrees C while the scFv melts at similar to 65 degrees C. The recognition elements were incorporated into a competitive assay format using a bead-based multiplexing platform to examine their sensitivity and specificity. The scFv was able to detect TNT similar to 10-fold more sensitively than the mAb in this assay format, allowing detection of TNT concentrations down to at least 11 mu g L-1. The 2G5B gave similar detection limits to a commercial anti-TNT mAb, but was less specific, recognizing 1,3,5-trinitrobenzene (TNB) equally well as TNT. Published by Elsevier B.V.
C1 [Liu, Jinny L.; Zabetakis, Dan; Acevedo-Velez, Glendalys; Goldman, Ellen R.; Anderson, George P.] USN, Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
RP Goldman, ER (reprint author), USN, Res Lab, Ctr Bio Mol Sci & Engn, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM ellen.goldman@nrl.navy.mil; george.anderson@nrl.navy.mil
RI Anderson, George/D-2461-2011
OI Anderson, George/0000-0001-7545-9893
FU NSF [1004926-0001]
FX The work presented here was performed under ONR/NRL 6.2 work unit
T032-08. Glendalys Acevedo-Velez, an undergraduate at the University of
Puerto Rico at Arecibo, was supported by an NSF program to provide
summer internships to students from Historically Black Colleges and
Universities, Tribal Colleges and minority institutions (Grant
#1004926-0001). The opinions expressed here are those of the authors and
do not represent those of the US Navy, the US Department of Defense, or
the US government.
NR 33
TC 9
Z9 10
U1 0
U2 38
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0003-2670
J9 ANAL CHIM ACTA
JI Anal. Chim. Acta
PD JAN 8
PY 2013
VL 759
BP 100
EP 104
DI 10.1016/j.aca.2012.10.051
PG 5
WC Chemistry, Analytical
SC Chemistry
GA 073RX
UT WOS:000313761300012
PM 23260682
ER
PT J
AU Raphael, MP
Christodoulides, JA
Delehanty, JB
Long, JP
Pehrsson, PE
Byers, JM
AF Raphael, Marc P.
Christodoulides, Joseph A.
Delehanty, James B.
Long, James P.
Pehrsson, Pehr E.
Byers, Jeff M.
TI Quantitative LSPR Imaging for Biosensing with Single Nanostructure
Resolution
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID SURFACE-PLASMON RESONANCE; ALZHEIMERS-DISEASE; REAL-TIME; SENSITIVITY;
GOLD; SENSORS; CELLS; SPECTROSCOPY; SELECTIVITY; ADSORPTION
AB Localized surface plasmon resonance (LSPR) imaging has the potential to map complex spatio-temporal variations in analyte concentration, such as those produced by protein secretions from live cells. A fundamental roadblock to the realization of such applications is the challenge of calibrating a nanoscale sensor for quantitative analysis. Here, we introduce a new, to our knowledge, LSPR imaging and analysis technique that enables the calibration of hundreds of individual gold nanostructures in parallel. The calibration allowed us to map the fractional occupancy of surface-bound receptors at individual nanostructures with nanomolar sensitivity and a temporal resolution of 225 ms. As a demonstration of the technique's applicability to molecular and cell biology, the calibrated array was used for the quantitative LSPR imaging of anti-c-myc antibodies harvested from a cultured 9E10 hybridoma cell line without the need for further purification or processing.
C1 [Raphael, Marc P.; Christodoulides, Joseph A.; Delehanty, James B.; Long, James P.; Pehrsson, Pehr E.; Byers, Jeff M.] USN, Res Lab, Washington, DC 20375 USA.
RP Raphael, MP (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM marc.raphael@nrl.navy.mil
FU Naval Research Laboratory's Institute for Nanoscience
FX This work was supported by the Naval Research Laboratory's Institute for
Nanoscience.
NR 34
TC 6
Z9 6
U1 2
U2 61
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD JAN 8
PY 2013
VL 104
IS 1
BP 30
EP 36
DI 10.1016/j.bpj.2012.11.3821
PG 7
WC Biophysics
SC Biophysics
GA 070VM
UT WOS:000313541200006
PM 23332056
ER
PT J
AU Casalini, R
Snow, AW
Roland, CM
AF Casalini, R.
Snow, A. W.
Roland, C. M.
TI Temperature Dependence of the Johari-Goldstein Relaxation in Poly(methyl
methacrylate) and Poly(thiomethyl methacrylate)
SO MACROMOLECULES
LA English
DT Article
ID NEUTRON SPIN-ECHO; BETA-RELAXATION; GLASS-FORMERS; SECONDARY
RELAXATIONS; DIELECTRIC-RELAXATION; ALPHA-RELAXATION; COUPLING MODEL;
DYNAMICS; PRESSURE; LIQUIDS
AB To analyze the Johari-Goldstein (JG) secondary process, dielectric relaxation measurements were carried out on poly(methyl methacrylate) (PMMA) and poly(thiomethyl methacrylate) (PTMA). The latter has a sulfur atom replacing the oxygen in the ester of PMMA, making the pendant group much less polar. This weakens the intensity of the secondary relaxation, enabling facile resolution of the JG and primary structural relaxation peaks. We find that the JG relaxation time of PTMA has a substantially larger activation energy (factor of 2) in the liquid compared to the glassy state. Although deconvolution of the peaks in PMMA is more ambiguous due to the large dielectric strength of its JG relaxation, applying the same analysis leads to a very similar result. In light of previous results, we conclude very generally from their temperature-dependence that JG secondary motions sense the glass transition, consistent with their role as precursor to structural relaxation.
C1 [Casalini, R.; Snow, A. W.; Roland, C. M.] USN, Res Lab, Div Chem, Washington, DC 20375 USA.
RP Casalini, R (reprint author), USN, Res Lab, Div Chem, Code 6120, Washington, DC 20375 USA.
FU Office of Naval Research
FX The authors are grateful to A. Purdy for help in the synthesis of the
PTMA and to D. Fragiadakis for assistance with the analysis software
Grafity. This work was supported by the Office of Naval Research.
NR 47
TC 12
Z9 12
U1 7
U2 34
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
J9 MACROMOLECULES
JI Macromolecules
PD JAN 8
PY 2013
VL 46
IS 1
BP 330
EP 334
DI 10.1021/ma3021322
PG 5
WC Polymer Science
SC Polymer Science
GA 067NY
UT WOS:000313303600036
ER
PT J
AU Goodman, J
Bertoncini, C
AF Goodman, J.
Bertoncini, C.
TI Probability density for envelope of multiplicative noise
SO ELECTRONICS LETTERS
LA English
DT Article
ID MODEL
AB The closed-form probability density for the envelope of multiplicative noise, both for the zero and nonzero mean case, is considered. The distribution parameters are determined using a curve fitting optimisation that shows excellent agreement between the measured and parametric form of the density function.
C1 [Goodman, J.; Bertoncini, C.] USN, Res Lab, Washington, DC 20375 USA.
RP Goodman, J (reprint author), USN, Res Lab, Washington, DC 20375 USA.
EM joel.goodman@nrl.navy.mil
FU Office of Naval Research
FX This work has been supported in part by the Office of Naval Research
NR 8
TC 0
Z9 0
U1 0
U2 2
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 0013-5194
J9 ELECTRON LETT
JI Electron. Lett.
PD JAN 3
PY 2013
VL 49
IS 1
BP 39
EP 40
DI 10.1049/el.2012.3072
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA 134SQ
UT WOS:000318235200024
ER
PT J
AU Shon, S
Han, DK
Ko, H
AF Shon, Suwon
Han, David K.
Ko, Hanseok
GP IEEE
TI Abnormal Acoustic Event Localization based on Selective Frequency Bin in
High Noise Environment for Audio Surveillance
SO 2013 10TH IEEE INTERNATIONAL CONFERENCE ON ADVANCED VIDEO AND SIGNAL
BASED SURVEILLANCE (AVSS 2013)
LA English
DT Proceedings Paper
CT 10th IEEE International Conference on Advanced Video and Signal Based
Surveillance (AVSS)
CY AUG 27-30, 2013
CL Krakow, POLAND
SP IEEE, IEEE Signal Proc Soc, IEEE Comp Soc, Polish Soc Theoret & Appl Elect Engn, Poznan Sect, Polish Acad Sci, Signals, Circuits & Elect Syst Sect Elect & Telecommunicat Comm, Mitsubishi Elect
ID MICROPHONE ARRAY; WEIGHTED CSP; TIME-DELAY; SRP-PHAT; IMPLEMENTATION;
LOCATION
AB In this paper, a method for source localization for surveillance system is presented. In particular, we propose an algorithm for abnormal acoustic event localization based on a novel approach of relevant frequency bin selections by statistical analyses. By means of selective frequency bin, it becomes possible to localize the event more accurately in high noise environment with low computational complexity. The effectiveness is verified through the experimental results in varied noise environments with different levels of Signal to Noise Ratio (SNR).
C1 [Shon, Suwon; Ko, Hanseok] Korea Univ, Sch Elect Engn, Seoul, South Korea.
[Han, David K.] Off Naval Res, Ocean Engn & Marine Syst Team, Arlington, VA 22217 USA.
RP Shon, S (reprint author), Korea Univ, Sch Elect Engn, Seoul, South Korea.
EM swshon@ispl.korea.ac.kr; ctmkhan@gmail.com; hsko@korea.ac.kr
FU Seoul RBD Program [WR080951]
FX This research was supported by Seoul R&BD Program (WR080951).
NR 25
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-0703-8
PY 2013
BP 87
EP 92
PG 6
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BB7LZ
UT WOS:000345737900015
ER
PT J
AU Adams, A
Tummala, M
McEachen, J
Scrofani, J
AF Adams, Agur
Tummala, Murali
McEachen, John
Scrofani, James
BE Wysocki, TA
Wysocki, BJ
TI Source Localization and Tracking in a Cognitive Radio Environment
Consisting of Frequency and Spatial Mobility
SO 2013 7TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION
SYSTEMS (ICSPCS)
LA English
DT Proceedings Paper
CT 7th International Conference on Signal Processing and Communication
Systems (ICSPCS)
CY DEC 16-18, 2013
CL Gold Coast, AUSTRALIA
SP IEEE, IEEE Commun Soc, Univ Nebraska, Peter Kiewit Inst
ID NETWORKS
AB Source localization and tracking of a Cognitive Radio (CR) is a significant challenge because of the dynamic opportunistic behavior of the radio across the spatial, frequency, and temporal domains. For any localization or tracking scheme to be effective, it must be able to adapt as a CR adapts to its surroundings. The extended semi range-based (ESRB) localization scheme was proposed as a solution to the aforementioned problem, but resulted in considerable communication overhead and storage requirements within the wireless sensor network (WSN) as well as poor reliability due to frequent divergence of the non-linear least squares method (NLSM) in the localization process. Furthermore, tracking a mobile CR was accomplished in a brute force manner by repeating the same positioning technique without taking advantage of prior position estimates. In this paper, the ESRB localization scheme is modified to incorporate the Kalman filter as a recursive estimator to reduce the burden placed on the WSN and integrate an efficient means to estimate the position and velocity of a mobile CR over time. The proposed modification is modeled in the MATLAB programming language, and its efficacy is demonstrated through simulation. It is shown that the Kalman filter is an appropriate recursive estimator for use in the ESRB localization scheme, while accounting for both frequency and spatial mobility inherent in the CR environment.
C1 [Adams, Agur] US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA.
[Tummala, Murali; McEachen, John; Scrofani, James] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA USA.
RP Adams, A (reprint author), US Naval Acad, Dept Elect & Comp Engn, Annapolis, MD 21402 USA.
EM aadams@usna.edu; mtummala@nps.edu; mceachen@nps.edu; jwscrofa@nps.edu
NR 14
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1319-0
PY 2013
PG 6
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BB7NA
UT WOS:000345766100081
ER
PT J
AU Ngo, TA
Tummala, M
McEachen, JC
Scrofani, JW
AF Ngo, Tan A.
Tummala, Murali
McEachen, John C.
Scrofani, James W.
BE Wysocki, TA
Wysocki, BJ
TI Two-Stage Scheme for Geolocation using Mobile Sensor Networks with
Optimal Formations
SO 2013 7TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION
SYSTEMS (ICSPCS)
LA English
DT Proceedings Paper
CT 7th International Conference on Signal Processing and Communication
Systems (ICSPCS)
CY DEC 16-18, 2013
CL Gold Coast, AUSTRALIA
SP IEEE, IEEE Commun Soc, Univ Nebraska, Peter Kiewit Inst
DE Two-stage geolocation; TDOA; MLE; mobile wireless sensor network
AB Recent advancements in low power micro sensors and wireless network technology have enabled a host of new sensor network applications. One such application is collaborative geolocation using time difference of arrival measurements from a wireless sensor network consisting of mobile ground or airborne sensor nodes. This paper introduces a two-stage geolocation scheme that begins in an optimal bearing estimate formation and then reconfigures to a formation that yields an optimal position estimate. Using optimal sensor formations for bearing and position estimates, enables a network to obtain an optimal estimate of a target emitter's position. Through simulation the performance of such a scheme is analyzed and compared to that of a random fixed array. Its implementation on an airborne quadrotor network is also explored and is shown to be viable despite the network's unsteady node station keeping.
C1 [Ngo, Tan A.; Tummala, Murali; McEachen, John C.; Scrofani, James W.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
RP Ngo, TA (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
EM tango@nps.edu; mtummala@nps.edu; mceachen@nps.edu; jwscrofa@nps.edu
NR 16
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1319-0
PY 2013
PG 5
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BB7NA
UT WOS:000345766100083
ER
PT J
AU Roth, JD
Tummala, M
McEachen, J
Scrofani, J
AF Roth, John D.
Tummala, Murali
McEachen, John
Scrofani, James
BE Wysocki, TA
Wysocki, BJ
TI A Configurable Fingerprint-Based Hidden-Markov Model for Tracking in
Variable Channel Conditions
SO 2013 7TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION
SYSTEMS (ICSPCS)
LA English
DT Proceedings Paper
CT 7th International Conference on Signal Processing and Communication
Systems (ICSPCS)
CY DEC 16-18, 2013
CL Gold Coast, AUSTRALIA
SP IEEE, IEEE Commun Soc, Univ Nebraska, Peter Kiewit Inst
DE Hidden-Markov Model; channel conditions; non-line-of-sight (NLOS);
shadowing; positioning; geolocation; maximum-likelihood; fingerprinting;
database correlation; cell-ID
ID WIRELESS NETWORKS; LOCALIZATION; MITIGATION; TUTORIAL; LOCATION
AB A novel scheme for mobile subscriber positioning is proposed based on the hidden-Markov model (HMM) and the cell-ID maximum-likelihood database correlation method also known as fingerprinting. Using a simulated channel environment, based on the Clearwire deployment of WiMAX base stations in San Jose, CA, we show that matching the right configuration of the model to the deployment environment can realize significant gains in performance. The proposed scheme balances the scalability inherent in hidden-Markov-based motion models deployed in large areas of interest against the existing channel conditions and computational capability. By utilizing a simulated channel this paper demonstrates the effect of base station deployment and shadowing on the fingerprint-based HMM motion model. Further, the benefits gained through scaling the HMM are explored.
C1 [Roth, John D.] US Naval Acad, Elect & Comp Engn Dept, Annapolis, MD 21402 USA.
[Tummala, Murali; McEachen, John; Scrofani, James] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA USA.
RP Roth, JD (reprint author), US Naval Acad, Elect & Comp Engn Dept, Annapolis, MD 21402 USA.
EM jroth@usna.edu
NR 37
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1319-0
PY 2013
PG 9
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BB7NA
UT WOS:000345766100037
ER
PT J
AU Tester, K
Scrofani, J
Tummala, M
Garren, D
McEachen, J
AF Tester, Kristofer
Scrofani, James
Tummala, Murali
Garren, David
McEachen, John
BE Wysocki, TA
Wysocki, BJ
TI A Spatiotemporal Clustering Approach to Maritime Domain Awareness
SO 2013 7TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION
SYSTEMS (ICSPCS)
LA English
DT Proceedings Paper
CT 7th International Conference on Signal Processing and Communication
Systems (ICSPCS)
CY DEC 16-18, 2013
CL Gold Coast, AUSTRALIA
SP IEEE, IEEE Commun Soc, Univ Nebraska, Peter Kiewit Inst
DE Spatiotemporal clustering; maritime domain
AB Spatiotemporal clustering is the process of grouping objects based on both their spatial and temporal similarity. This approach is useful when considering the distance between objects and how that distance changes through time. Spatiotemporal clustering analysis is applied to the maritime domain in this paper, specifically to a defined area of water, during a period of time, in order to gain behavioral knowledge of vessel interactions and provide the opportunity to screen such interactions for further investigation. The proposed spatiotemporal clustering algorithm spatially clusters vessels in the water space using k-means clustering analysis, kinematically refines the clusters based on the similarity of vessel headings, speeds and the distance between them, and temporally analyzes the continuity of membership of the kinematic clusters through time to determine which clusters are moving. The algorithm is implemented in the MATLAB programming environment, verified with a synthetic data scenario, and validated with two real-world datasets.
C1 [Tester, Kristofer; Scrofani, James; Tummala, Murali; Garren, David; McEachen, John] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93940 USA.
RP Tester, K (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93940 USA.
NR 15
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1319-0
PY 2013
PG 9
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BB7NA
UT WOS:000345766100019
ER
PT S
AU Julian, AL
Oriti, G
Pfender, ME
AF Julian, Alexander L.
Oriti, Giovanna
Pfender, Mark E.
GP IEEE
TI SLR Converter Design for Multi-Cell Battery Charging
SO 2013 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
SE IEEE Energy Conversion Congress and Exposition
LA English
DT Proceedings Paper
CT IEEE Energy Conversion Congress and Exposition (ECCE)
CY SEP 15-19, 2013
CL Denver, CO
SP IEEE, IEEE Ind Applicat Soc, IEEE Power Elect Soc
ID FREQUENCY
AB Series connected battery cells can use balancing circuits so that each individual cell has the same state of charge (SOC) as the others. In this paper series-loaded resonant (SLR) converters are used to trickle charge individual cells to accomplish this charge equalization goal and increase the reliability of the battery pack. Analytical equations are used to support the design of an SLR converter laboratory prototype. Additionally a physics based model implemented in Matlab/Simulink predicts the hardware behavior. Both analytical solutions and simulations are validated by laboratory experiments.
C1 [Julian, Alexander L.; Oriti, Giovanna; Pfender, Mark E.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
RP Julian, AL (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
NR 9
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2329-3721
BN 978-1-4799-0336-8
J9 IEEE ENER CONV
PY 2013
BP 743
EP 748
PG 6
WC Energy & Fuels; Engineering, Electrical & Electronic
SC Energy & Fuels; Engineering
GA BB6ZM
UT WOS:000345216901005
ER
PT S
AU Kelly, RL
Oriti, G
Julian, AL
AF Kelly, Ryan L.
Oriti, Giovanna
Julian, Alexander L.
GP IEEE
TI Reducing Fuel Consumption in a Forward Operating Base using an Energy
Management System
SO 2013 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
SE IEEE Energy Conversion Congress and Exposition
LA English
DT Proceedings Paper
CT IEEE Energy Conversion Congress and Exposition (ECCE)
CY SEP 15-19, 2013
CL Denver, CO
SP IEEE, IEEE Ind Applicat Soc, IEEE Power Elect Soc
AB This paper presents the benefits of transitioning from traditional generator employment in a Forward Operating Base (FOB) to an alternative architecture using a power electronics based Energy Management System (EMS). The EMS provides an interface between power sources, loads, and energy storage elements to form a microgrid. Using power electronics and programmable logic, the EMS enables more efficient generator utilization by matching real time load demand to the smallest capable power source, reducing overall fuel consumption. The EMS offers redundancy as it can connect any one of multiple power sources to critical loads. A hardware-based laboratory experiment demonstrates the ability to transition from one power source to another while providing uninterrupted current to the load. The results of the experiment validate a Simulink model of the EMS. An example load profile was applied to the model to compare overall fuel consumption between the traditional architecture and the EMS-enabled microgrid.
C1 [Kelly, Ryan L.; Oriti, Giovanna; Julian, Alexander L.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
RP Kelly, RL (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
NR 8
TC 1
Z9 1
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2329-3721
BN 978-1-4799-0336-8
J9 IEEE ENER CONV
PY 2013
BP 1330
EP 1336
PG 7
WC Energy & Fuels; Engineering, Electrical & Electronic
SC Energy & Fuels; Engineering
GA BB6ZM
UT WOS:000345216901088
ER
PT B
AU Ahmed, A
AF Ahmed, Akbar
BA Ahmed, A
BF Ahmed, A
TI THE THISTLE AND THE DRONE
SO THISTLE AND THE DRONE: HOW AMERICA'S WAR ON TERROR BECAME A GLOBAL WAR
ON TRIBAL ISLAM
LA English
DT Article; Book Chapter
C1 [Ahmed, Akbar] Amer Univ, Washington, DC 20016 USA.
[Ahmed, Akbar] US Naval Acad, Annapolis, MD 21402 USA.
[Ahmed, Akbar] Brookings Inst, Washington, DC 20036 USA.
RP Ahmed, A (reprint author), Amer Univ, Washington, DC 20016 USA.
NR 0
TC 0
Z9 0
U1 0
U2 2
PU BROOKINGS INST
PI WASHINGTON
PA 1775 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
BN 978-0-8157-2378-3; 978-0-8157-2379-0
PY 2013
BP 1
EP +
PG 74
WC International Relations
SC International Relations
GA BB6DO
UT WOS:000344694600001
ER
PT B
AU Ahmed, A
AF Ahmed, Akbar
BA Ahmed, A
BF Ahmed, A
TI WAZIRISTAN: "The Most Dangerous Place in the World"
SO THISTLE AND THE DRONE: HOW AMERICA'S WAR ON TERROR BECAME A GLOBAL WAR
ON TRIBAL ISLAM
LA English
DT Article; Book Chapter
C1 [Ahmed, Akbar] Amer Univ, Washington, DC 20016 USA.
[Ahmed, Akbar] US Naval Acad, Annapolis, MD 21402 USA.
[Ahmed, Akbar] Brookings Inst, Washington, DC 20036 USA.
RP Ahmed, A (reprint author), Amer Univ, Washington, DC 20016 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU BROOKINGS INST
PI WASHINGTON
PA 1775 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
BN 978-0-8157-2378-3; 978-0-8157-2379-0
PY 2013
BP 43
EP 95
PG 53
WC International Relations
SC International Relations
GA BB6DO
UT WOS:000344694600002
ER
PT B
AU Ahmed, A
AF Ahmed, Akbar
BA Ahmed, A
BF Ahmed, A
TI BIN LADEN'S DILEMMA: Balancing Tribal and Islamic Identity
SO THISTLE AND THE DRONE: HOW AMERICA'S WAR ON TERROR BECAME A GLOBAL WAR
ON TRIBAL ISLAM
LA English
DT Article; Book Chapter
C1 [Ahmed, Akbar] Amer Univ, Washington, DC 20016 USA.
[Ahmed, Akbar] US Naval Acad, Annapolis, MD 21402 USA.
[Ahmed, Akbar] Brookings Inst, Washington, DC 20036 USA.
RP Ahmed, A (reprint author), Amer Univ, Washington, DC 20016 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU BROOKINGS INST
PI WASHINGTON
PA 1775 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
BN 978-0-8157-2378-3; 978-0-8157-2379-0
PY 2013
BP 96
EP 133
PG 38
WC International Relations
SC International Relations
GA BB6DO
UT WOS:000344694600003
ER
PT B
AU Ahmed, A
AF Ahmed, Akbar
BA Ahmed, A
BF Ahmed, A
TI MUSHARRAF'S DILEMMA: Balancing Center and Periphery
SO THISTLE AND THE DRONE: HOW AMERICA'S WAR ON TERROR BECAME A GLOBAL WAR
ON TRIBAL ISLAM
LA English
DT Article; Book Chapter
C1 [Ahmed, Akbar] Amer Univ, Washington, DC 20016 USA.
[Ahmed, Akbar] US Naval Acad, Annapolis, MD 21402 USA.
[Ahmed, Akbar] Brookings Inst, Washington, DC 20036 USA.
RP Ahmed, A (reprint author), Amer Univ, Washington, DC 20016 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU BROOKINGS INST
PI WASHINGTON
PA 1775 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
BN 978-0-8157-2378-3; 978-0-8157-2379-0
PY 2013
BP 134
EP 254
PG 121
WC International Relations
SC International Relations
GA BB6DO
UT WOS:000344694600004
ER
PT B
AU Ahmed, A
AF Ahmed, Akbar
BA Ahmed, A
BF Ahmed, A
TI OBAMA'S DILEMMA: Balancing Security and Human Rights
SO THISTLE AND THE DRONE: HOW AMERICA'S WAR ON TERROR BECAME A GLOBAL WAR
ON TRIBAL ISLAM
LA English
DT Article; Book Chapter
C1 [Ahmed, Akbar] Amer Univ, Washington, DC 20016 USA.
[Ahmed, Akbar] US Naval Acad, Annapolis, MD 21402 USA.
[Ahmed, Akbar] Brookings Inst, Washington, DC 20036 USA.
RP Ahmed, A (reprint author), Amer Univ, Washington, DC 20016 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU BROOKINGS INST
PI WASHINGTON
PA 1775 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
BN 978-0-8157-2378-3; 978-0-8157-2379-0
PY 2013
BP 255
EP 299
PG 45
WC International Relations
SC International Relations
GA BB6DO
UT WOS:000344694600005
ER
PT B
AU Ahmed, A
AF Ahmed, Akbar
BA Ahmed, A
BF Ahmed, A
TI HOW TO WIN THE WAR ON TERROR: Stopping a Thousand Genocides Now
SO THISTLE AND THE DRONE: HOW AMERICA'S WAR ON TERROR BECAME A GLOBAL WAR
ON TRIBAL ISLAM
LA English
DT Article; Book Chapter
C1 [Ahmed, Akbar] Amer Univ, Washington, DC 20016 USA.
[Ahmed, Akbar] US Naval Acad, Annapolis, MD 21402 USA.
[Ahmed, Akbar] Brookings Inst, Washington, DC 20036 USA.
RP Ahmed, A (reprint author), Amer Univ, Washington, DC 20016 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU BROOKINGS INST
PI WASHINGTON
PA 1775 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
BN 978-0-8157-2378-3; 978-0-8157-2379-0
PY 2013
BP 300
EP 360
PG 61
WC International Relations
SC International Relations
GA BB6DO
UT WOS:000344694600006
ER
PT B
AU Ahmed, A
AF Ahmed, Akbar
BA Ahmed, A
BF Ahmed, A
TI Of Tears and Nightmares
SO THISTLE AND THE DRONE: HOW AMERICA'S WAR ON TERROR BECAME A GLOBAL WAR
ON TRIBAL ISLAM
LA English
DT Article; Book Chapter
C1 [Ahmed, Akbar] Amer Univ, Washington, DC 20016 USA.
[Ahmed, Akbar] US Naval Acad, Annapolis, MD 21402 USA.
[Ahmed, Akbar] Brookings Inst, Washington, DC 20036 USA.
RP Ahmed, A (reprint author), Amer Univ, Washington, DC 20016 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU BROOKINGS INST
PI WASHINGTON
PA 1775 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
BN 978-0-8157-2378-3; 978-0-8157-2379-0
PY 2013
BP 361
EP 369
PG 9
WC International Relations
SC International Relations
GA BB6DO
UT WOS:000344694600007
ER
PT S
AU D'Ammando, F
Orienti, M
Finke, J
Larsson, J
Giroletti, M
AF D'Ammando, F.
Orienti, M.
Finke, J.
Larsson, J.
Giroletti, M.
CA Fermi Large Area Telescope
BE Gomez, JL
TI Relativistic jets in narrow-line Seyfert 1 galaxies. New discoveries and
open questions
SO INNERMOST REGIONS OF RELATIVISTIC JETS AND THEIR MAGNETIC FIELDS
SE EPJ Web of Conferences
LA English
DT Proceedings Paper
CT International Symposium on Innermost Regions of Relativistic Jets and
their Magnetic Field
CY JUN 10-14, 2013
CL CSIC, Inst Astrofisica Andalucia, Granada, SPAIN
SP RadioNet, Consejo Super Investigaciones Cientificas, Junta Andalucia
HO CSIC, Inst Astrofisica Andalucia
ID ACTIVE GALACTIC NUCLEI; LARGE-AREA TELESCOPE; SPECTRAL
ENERGY-DISTRIBUTION; GAMMA-RAY EMISSION; RADIO-LOUD; PMN J0948+0022;
QUASAR; OUTBURST; SEARCH; EXCESS
AB Before the launch of the Fermi satellite only two classes of AGNs were known to produce relativistic jets and thus emit up to the gamma-ray energy range: blazars and radio galaxies, both hosted in giant elliptical galaxies. The first four years of observations by the Large Area Telescope on board Fermi confirmed that these two are the most numerous classes of identified sources in the extragalactic gamma-ray sky, but the discovery of gamma-ray emission from 5 radio-loud narrow-line Seyfert 1 galaxies revealed the presence of a possible emerging third class of AGNs with relativistic jets. Considering that narrow-line Seyfert 1 galaxies seem to be typically hosted in spiral galaxy, this finding poses intriguing questions about the nature of these objects, the onset of production of relativistic jets, and the cosmological evolution of radio-loud AGN. Here, we discuss the radio-to-gamma-rays properties of the gamma-ray emitting narrow-line Seyfert 1 galaxies, also in comparison with the blazar scenario.
C1 [D'Ammando, F.; Orienti, M.; Giroletti, M.] INAF Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy.
[Finke, J.] US Naval Res Lab, Washington, DC 20375 USA.
[Larsson, J.] KTH, Oskar Klein Ctr, Dept Phys, SE-10691 Stockholm, Sweden.
RP D'Ammando, F (reprint author), INAF Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy.
EM dammando@ira.inaf.it
OI /0000-0003-0065-2933; orienti, monica/0000-0003-4470-7094; Giroletti,
Marcello/0000-0002-8657-8852
FU PRIN-INAF
FX 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 lEnergie 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 dEtudes Spatiales in France. FD, MO, MG
acknowledge financial contribution from grant PRIN-INAF-2011. FD thank
also C. M. Raiteri, A. Doi, L. Stawarz, D. Dallacasa, T. Hovatta and the
OVRO Team, E. Angelakis, L. Fuhrmann and the F-GAMMA Team, M. Lister and
the MOJAVE Team, A. Drake and the CRTS Team, A. Lahteenmaki, E. Lindfors
and the Metsahovi Team, for all the fruitful work done together on this
topic.
NR 53
TC 1
Z9 1
U1 1
U2 1
PU E D P SCIENCES
PI CEDEX A
PA 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A,
FRANCE
SN 2100-014X
J9 EPJ WEB CONF
PY 2013
VL 61
AR UNSP 05006
DI 10.1051/epjconf/20136105006
PG 6
WC Physics, Applied; Physics, Multidisciplinary
SC Physics
GA BB5CU
UT WOS:000343671600051
ER
PT S
AU Farah-Stapleton, M
Auguston, M
AF Farah-Stapleton, Monica
Auguston, Mikhail
BE Dagli, CH
TI Behavioral Modeling of Software Intensive System Architectures
SO COMPLEX ADAPTIVE SYSTEMS: EMERGING TECHNOLOGIES FOR EVOLVING SYSTEMS:
SOCIO-TECHNICAL, CYBER AND BIG DATA
SE Procedia Computer Science
LA English
DT Proceedings Paper
CT Complex Adaptive Systems Conference
CY NOV 13-15, 2013
CL Baltimore, MD
SP Missouri Univ Sci & Technol, Engn Management & Syst Engn Dept, Lockheed Martin, Drexel Univ
DE architecture; behaviors; function point analysis; event traces
AB Architectural modeling and analysis are mechanisms that allow the capture of design decisions early in the process, so that they can be assessed and modified without incurring the costs of incorrect implementations. This paper addresses Monterey Phoenix (MP), a behavioral model for system and software architecture specification based on event traces, which supports architecture composition operations and views. MP captures behaviors and interactions between parts of the system and the environment with which it operates. As an executable architecture model leveraging "lightweight" formal methods and the small scope hypothesis, MP supports automatic generation of behavior examples (Use Cases) for early system architecture analysis, testing, verification, and validation. This paper also introduces a methodology utilizing MP that will inform quantifiable cost estimates (e.g. Function Point analysis) and ultimately project, program, and enterprise level resourcing decisions. Enhancing and emending DoDAF, UML, and SysML, MP is focused on behaviors, interactions, and automated tools for early verification. (C) 2013 The Authors. Published by Elsevier B.V.
C1 [Farah-Stapleton, Monica] OSD, Interagcy Program Off, 1700 N Moore St, Rosslyn, VA USA.
[Auguston, Mikhail] Naval Postgrad Sch, Dept Comp Sci, Monterey, CA USA.
RP Farah-Stapleton, M (reprint author), OSD, Interagcy Program Off, 1700 N Moore St, Rosslyn, VA USA.
EM monica.farah-stapleton@tma.osd.mil
NR 10
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1877-0509
J9 PROCEDIA COMPUT SCI
PY 2013
VL 20
BP 270
EP 276
DI 10.1016/j.procs.2013.09.272
PG 7
WC Computer Science, Artificial Intelligence; Computer Science, Theory &
Methods
SC Computer Science
GA BB2YC
UT WOS:000342564700040
ER
PT S
AU Giammarco, K
Auguston, M
AF Giammarco, Kristin
Auguston, Mikhail
BE Dagli, CH
TI Well, you didn't say not to! A Formal Systems Engineering Approach to
Teaching an Unruly Architecture Good Behavior
SO COMPLEX ADAPTIVE SYSTEMS: EMERGING TECHNOLOGIES FOR EVOLVING SYSTEMS:
SOCIO-TECHNICAL, CYBER AND BIG DATA
SE Procedia Computer Science
LA English
DT Proceedings Paper
CT Complex Adaptive Systems Conference
CY NOV 13-15, 2013
CL Baltimore, MD
SP Missouri Univ Sci & Technol, Engn Management & Syst Engn Dept, Lockheed Martin, Drexel Univ
DE architecture; formal methods; scenario generation; system of systems;
complex systems
AB This paper proposes a formal modeling approach for predicting emergent reactive system and system of systems (SoS) behaviors resulting from the interactions among subsystems and among the system and its environment. The approach emphasizes specification of component behavior and component interaction as separate concerns at the architectural level, consistent with well-accepted definitions of SoS. The Monterey Phoenix (MP) approach provides features for prediction of emergent SoS behaviors. An example highlights limitations of current modeling languages and approaches that hinder prediction of emergent behavior, and demonstrates how the application of MP can enhance SoS modeling capability through the following principles:
Model component interactions as general rules, orthogonal to the component behavior.
Automatically extract possible scenarios (use cases) from descriptions of system behavior.
Test system behavior against stakeholder expectations/requirements using scenario inspection and assertion checking.
MP provides a new capability for automatically verifying system behaviors early in the lifecycle, when design flaws are most easily and inexpensively corrected. MP extends existing frameworks and allows multiple visualizations for different stakeholders, and has potential for application in multiple domains. (C) 2013 The Authors. Published by Elsevier B.V.
C1 [Giammarco, Kristin] Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA.
[Auguston, Mikhail] Naval Postgrad Sch, Dept Comp Sci, Monterey, CA 93943 USA.
RP Giammarco, K (reprint author), Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA.
EM kmgiamma@nps.edu
NR 16
TC 0
Z9 0
U1 1
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1877-0509
J9 PROCEDIA COMPUT SCI
PY 2013
VL 20
BP 277
EP 282
DI 10.1016/j.procs.2013.09.273
PG 6
WC Computer Science, Artificial Intelligence; Computer Science, Theory &
Methods
SC Computer Science
GA BB2YC
UT WOS:000342564700041
ER
PT S
AU Butler, JT
Sasao, T
AF Butler, Jon T.
Sasao, Tsutomu
BE Brisk, P
Coutinho, JGD
Diniz, PC
TI Hardware Index to Set Partition Converter
SO RECONFIGURABLE COMPUTING: ARCHITECTURES, TOOLS AND APPLICATIONS
SE Lecture Notes in Computer Science
LA English
DT Proceedings Paper
CT 9th International Applied Reconfigurable Computing Symposium (ARC)
CY MAR 25-27, 2013
CL Los Angeles, CA
SP Univ So Calif, Informat Sci Inst
AB We demonstrate, for the first time, high-speed circuits that generate partitions on a set S of n objects. We offer two versions. 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 needed in the hardware implementation of the optimum distribution of tasks to processors. Our circuits are combinational. For large n, they can have large delay. However, one can easily pipeline them to produce one set partition per clock period. We show 1) analytical and 2) experimental time/complexity results that quantify the efficiency of our designs. Our results show that a hardware partition generator running on a 100 MHz FPGA produces partitions at a rate that is approximately 10 times the rate of a software implementation on a processor running at 2.26 GHz.
C1 [Butler, Jon T.] Naval Postgrad Sch, Monterey, CA 93943 USA.
[Sasao, Tsutomu] Kyushu Inst Technol, Fukuoka 8208502, Japan.
RP Butler, JT (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
EM jon_butler@msn.com; sasao@ieee.org
NR 17
TC 0
Z9 0
U1 0
U2 1
PU SPRINGER-VERLAG BERLIN
PI BERLIN
PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY
SN 0302-9743
BN 978-3-642-36812-7; 978-3-642-36811-0
J9 LECT NOTES COMPUT SC
PY 2013
VL 7806
BP 72
EP 83
PG 12
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods
SC Computer Science
GA BB3PI
UT WOS:000342984500007
ER
PT S
AU Ngo, TA
Tummala, M
McEachen, JC
AF Ngo, Tan A.
Tummala, Murali
McEachen, John C.
BE Matthews, MB
TI Multicast Collaborative Beamforming from Airborne Wireless Sensor
Network
SO 2013 ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS
SE Conference Record of the Asilomar Conference on Signals Systems and
Computers
LA English
DT Proceedings Paper
CT 47th Asilomar Conference on Signals, Systems and Computers
CY NOV 03-06, 2013
CL Pacific Grove, CA
SP IEEE Signal Proc Soc
ID ARRAYS
AB Recent advancements in low power micro sensors and wireless network technology have enabled a host of new sensor network applications. One such application is to perform multicast collaborative beamforming from a stationary airborne wireless sensor network. Such a network will be able to broadcast a signal to multiple distributed receivers simultaneously. Collaborative beamforming from such a network can also be an effective means of communication from an unobstructed vantage point. This paper explores the feasibility of such a network. We analyze the beam pattern fluctuations due to position errors from unsteady node station keeping. We show that the effects of minor position errors are manageable. Finally, a node repositioning based non-linear constrained optimization technique for multicast collaborative beamforming is introduced.
C1 [Ngo, Tan A.; Tummala, Murali; McEachen, John C.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
RP Ngo, TA (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, 1 Univ Circle, Monterey, CA 93943 USA.
EM tango@nps.edu; mtummala@nps.edu; mceachen@nps.edu
NR 13
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1058-6393
BN 978-1-4799-2390-8
J9 CONF REC ASILOMAR C
PY 2013
BP 537
EP 541
PG 5
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA BB2HD
UT WOS:000341772900099
ER
PT S
AU Sen Gupta, A
Kirsteins, I
AF Sen Gupta, Ananya
Kirsteins, Ivars
BE Matthews, MB
TI Sonar Target Detection and Classification Against Non-stationary
Interference Using Dynamic Time-Frequency Localization
SO 2013 ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS
SE Conference Record of the Asilomar Conference on Signals Systems and
Computers
LA English
DT Proceedings Paper
CT 47th Asilomar Conference on Signals, Systems, and Computers
CY NOV 03-06, 2013
CL Pacific Grove, CA
SP IEEE Signal Proc Soc
DE sparse dictionary; sonar target detection; time-frequency localization
ID LARGE UNDERDETERMINED SYSTEMS; EQUATIONS; CHANNELS
AB We address the well-known challenge of detecting a target in non-stationary clutter in active sonar using dynamic time-frequency localization. The challenge is to track a target against non-stationary reverberation from the bottom and sea surface, as well as backscatter from biologics. Definition of "target" is application-specific, e.g. in a Naval application the target would typically be a submarine or mine, in another application the target is an environmental AUV sensor tracing pollutant flow along the coast. Examples of non-targets include bathymetric features, wrecks, fish schools, other AUVs, etc. We present a concept for an adaptive subspace-tracking algorithm that navigates the time-frequency space of the target echo dynamically to provide enhanced target detection and classification. Simulation results are presented.
C1 [Sen Gupta, Ananya] Univ Iowa, Dept Elect & Comp Engn, Iowa City, IA 52242 USA.
[Kirsteins, Ivars] Naval Undersea Warfare Ctr, Newport, RI USA.
RP Sen Gupta, A (reprint author), Univ Iowa, Dept Elect & Comp Engn, Iowa City, IA 52242 USA.
EM ananya-sengupta@uiowa.edu; ivars.kirsteins@navy.mil
FU ONR [N000140710738, N000140510085, N000140710184, N000140710523]
FX The authors thank Dr. James Preisig, Woods Hole Oceanographic
Institution, for providing experimental field data collected at SPACE08
experiment, supported by ONR Grants N000140710738, N000140510085,
N000140710184, and N000140710523.
NR 16
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1058-6393
BN 978-1-4799-2390-8
J9 CONF REC ASILOMAR C
PY 2013
BP 940
EP 944
PG 5
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA BB2HD
UT WOS:000341772900172
ER
PT S
AU Hagstette, ME
Fargues, MP
Cristi, R
AF Hagstette, Matthew E.
Fargues, Monique P.
Cristi, Roberto
BE Matthews, MB
TI Extraction of a Weak Co-Channel Interfering Communication Signal using
Complex Independent Component Analysis
SO 2013 ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS
SE Conference Record of the Asilomar Conference on Signals Systems and
Computers
LA English
DT Proceedings Paper
CT 47th Asilomar Conference on Signals, Systems and Computers
CY NOV 03-06, 2013
CL Pacific Grove, CA
SP IEEE Signal Proc Soc
DE Complex Independent Component Analysis (ICA); Co-channel interference
AB Independent Component Analysis (ICA) algorithms taking advantage of the potential non-circular property of complex signals have been recently derived and shown to lead to improved performances. We investigate the performance of three ICA approaches to extract a weak co-channel interfering communications signal from a television broadcast signal over varied interference-to-noise ratios: complex maximization of non-Gaussianity by Novey et al., RobustICA by Zarzoso et al., and complex fixed-point algorithm by Douglas. Findings show improved performance and sensitivity to the prewhitening step as the number of sensors increases.
C1 [Hagstette, Matthew E.; Fargues, Monique P.; Cristi, Roberto] Naval Postgrad Sch, ECE Dept, Monterey, CA 93943 USA.
RP Hagstette, ME (reprint author), Naval Postgrad Sch, ECE Dept, Monterey, CA 93943 USA.
EM mehagste@nps.edu; fargues@nps.edu; rcristi@nps.edu
NR 6
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1058-6393
BN 978-1-4799-2390-8
J9 CONF REC ASILOMAR C
PY 2013
BP 1171
EP 1175
PG 5
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA BB2HD
UT WOS:000341772900213
ER
PT S
AU Wagner, KT
Doroslovacki, MI
AF Wagner, Kevin T.
Doroslovacki, Milos I.
BE Matthews, MB
TI COMPLEX PROPORTIONATE-TYPE AFFINE PROJECTION ALGORITHMS
SO 2013 ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS
SE Conference Record of the Asilomar Conference on Signals Systems and
Computers
LA English
DT Proceedings Paper
CT 47th Asilomar Conference on Signals, Systems, and Computers
CY NOV 03-06, 2013
CL Pacific Grove, CA
SP IEEE Signal Proc Soc
DE Adaptive filtering; convergence; affine projection algorithms
AB An extension of complex proportionate-type normalized least mean square algorithms is proposed and derived. This new algorithm called the complex proportionate-type affine projection algorithm helps the estimation of unknown impulse responses when the input signal is colored. The derivation of the complex proportionate-type affine projection algorithm is performed by minimizing the second norm of the weighted difference between the current estimate of the impulse response and the estimate at the next time step under constraints that multiple a posteriori output errors are zero. Several variants of the algorithm are obtained as in the case of the complex proportionate-type normalized least mean square algorithm. It is shown how to use the algorithm in the case of widely linear systems. The learning curves of the algorithms are compared for several standard gain assignment laws for colored and speech input. Through simulation it was demonstrated that the complex proportionate-type affine projection algorithm offers superior convergence performance for colored input signals relative to complex proportionate-type normalized least mean square algorithms and that using separate gains to update the real and imaginary parts of the estimated impulse response, as opposed to the same gain, improves the convergence performance.
C1 [Wagner, Kevin T.] Naval Res Lab, Div Radar, Washington, DC 20375 USA.
[Doroslovacki, Milos I.] George Washington Univ, Dept Elect & Comp Engn, Washington, DC 20052 USA.
RP Wagner, KT (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 USA.
NR 6
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1058-6393
BN 978-1-4799-2390-8
J9 CONF REC ASILOMAR C
PY 2013
BP 1510
EP 1514
PG 5
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA BB2HD
UT WOS:000341772900272
ER
PT S
AU Shepherd, KD
Romero, RA
AF Shepherd, Kevin D.
Romero, Ric A.
BE Matthews, MB
TI Radar Waveform Design in Active Communications Channel
SO 2013 ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS
SE Conference Record of the Asilomar Conference on Signals Systems and
Computers
LA English
DT Proceedings Paper
CT 47th Asilomar Conference on Signals, Systems and Computers
CY NOV 03-06, 2013
CL Pacific Grove, CA
SP IEEE Signal Proc Soc
DE waveform design; spectrum sharing; cognitive radar; electronic warfare;
spectrum management
AB In this paper, we investigate spectrally adaptive radar transmit waveform design and its effects on an active communication system. We specifically look at waveform design for point targets. The transmit waveform is optimized by accounting for the modulation spectrum of the communication system while trying to efficiently use the remaining spectrum. With the use of spectrally-matched radar waveform, we show that the SER detection performance of the communication system is minimally affected compared to the SER performance with a classical non-adaptive pulsed radar waveform. Moreover, we show the detection performance of the adaptive waveform is less impacted by the active communication compared to that of the pulsed radar waveform design. In other words the radar is able to coexist with a friendly communication system and thus share the spectrum with a friendly communication system.
C1 [Shepherd, Kevin D.; Romero, Ric A.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
RP Shepherd, KD (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
EM kdshephe@nps.edu; rnromero@nps.edu
NR 3
TC 1
Z9 1
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1058-6393
BN 978-1-4799-2390-8
J9 CONF REC ASILOMAR C
PY 2013
BP 1515
EP 1519
PG 5
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA BB2HD
UT WOS:000341772900273
ER
PT S
AU Bordonaro, SV
Willett, P
Bar-Shalom, Y
AF Bordonaro, Steven V.
Willett, Peter
Bar-Shalom, Yaakov
BE Matthews, MB
TI Performance Analysis of the Converted Range Rate and Position Linear
Kalman Filter
SO 2013 ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS
SE Conference Record of the Asilomar Conference on Signals Systems and
Computers
LA English
DT Proceedings Paper
CT 47th Asilomar Conference on Signals, Systems, and Computers
CY NOV 03-06, 2013
CL Pacific Grove, CA
SP IEEE Signal Proc Soc
ID TRACKING
AB In active sonar and radar applications measurements consist of range, bearing and often range rate - all nonlinear functions of the target state (usually modeled in Cartesian coordinates). The converted measurement Kalman filter (CMFK) first converts the range and bearing measurements into Cartesian coordinates to allow for the use of a linear Kalman filter. The extension of the CMKF to use range rate as a linear measurement however has been limited to cases with small bearing errors. The use of range rate as a nonlinear measurement requires the use of a nonlinear filter such as the extended Kalman filter (EKF). Due to the uncertain performance of the EKF, various modifications have been proposed, including use of a pseudo measurement, an alternative linearization of the measurement prediction function, and sequentially processing the converted position and range rate measurements (applied to the EKF and the Unscented Kalman Filter). Common to these approaches is that the measurement prediction function remains nonlinear. A measurement conversion from range, bearing and range rate to Cartesian position and velocity has recently been proposed [4]. This manuscript expands the evaluation of this new approach by comparing to the Sequential EKF, the Sequential Unscented Kalman Filter (UKF) and the posterior Cramer-Rao lower bound (PCRLB). The new method is shown to have improved mean square error performance and exhibits improved constancy over the previously proposed methods, especially in cases with poor bearing accuracy.
C1 [Bordonaro, Steven V.] Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
[Willett, Peter; Bar-Shalom, Yaakov] Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA.
RP Bordonaro, SV (reprint author), Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
EM steven.bordonaro@navy.mil; willett@engr.uconn.edu; ybs@engr.uconn.edu
FU ONR In-house Laboratory Independent Research (ILIR); Office of Naval
Research [N000014-13-1-0231]; ARO [W911NF-10-1-0369]; ONR
[N00014-10-1-0029]
FX Steven Bordonaro was supported by ONR In-house Laboratory Independent
Research (ILIR). Peter Willett was supported by the Office of Naval
Research under contract N000014-13-1-0231. Yaakov Bar Shalom was
supported under ARO W911NF-10-1-0369 and ONR N00014-10-1-0029.
NR 18
TC 2
Z9 3
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1058-6393
BN 978-1-4799-2390-8
J9 CONF REC ASILOMAR C
PY 2013
BP 1751
EP 1755
PG 5
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA BB2HD
UT WOS:000341772900317
ER
PT S
AU Romero, RA
AF Romero, Ric A.
BE Matthews, MB
TI Detection Performance of Matched Transmit Waveform for Moving Extended
Targets
SO 2013 ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS
SE Conference Record of the Asilomar Conference on Signals Systems and
Computers
LA English
DT Proceedings Paper
CT 47th Asilomar Conference on Signals, Systems and Computers
CY NOV 03-06, 2013
CL Pacific Grove, CA
SP IEEE Signal Proc Soc
DE Extended Target; Moving Target; Eigenwaveform; Cognitive Radar; Waveform
Design; Matched Waveform
ID DESIGN
AB Depending on the radar-target dynamics, the time extent and amplitude of a moving extended target from a radar's perspective may actually change as a function of relative motion. It follows that waveform design should accommodate for the increase or decrease of a target's time extent and changes in amplitude as the target moves towards or away from a radar or vice versa. This paper shows the performance gain and/or degradation of both matched transmit waveform (called eigenwaveform) and the classical wideband pulsed transmit waveform when the effect of motion on target's time extent and amplitude changes are considered.
C1 Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Romero, RA (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
EM rnromero@nps.edu
NR 5
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1058-6393
BN 978-1-4799-2390-8
J9 CONF REC ASILOMAR C
PY 2013
BP 1956
EP 1960
PG 5
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA BB2HD
UT WOS:000341772900354
ER
PT S
AU Trautz, K
Jenkins, P
Walters, R
Scheiman, D
Hoheisel, R
Tatavarti, R
Chan, R
Miyamoto, H
Adams, J
Elarde, V
Stender, C
Hains, A
McPheeters, C
Youtsey, C
Pan, N
Osowski, M
AF Trautz, Kelly
Jenkins, Phillip
Walters, Robert
Scheiman, David
Hoheisel, Raymond
Tatavarti, Rao
Chan, Ray
Miyamoto, Haruki
Adams, Jessica
Elarde, Victor
Stender, Christopher
Hains, Alexander
McPheeters, Claiborne
Youtsey, Chris
Pan, Noren
Osowski, Mark
GP IEEE
TI High Efficiency Flexible Solar Panels
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE Solar Cell; Solar Power Generation; Batteries; Photovoltaic Systems
AB The military's need to reduce both fuel and battery resupply is a real time requirement for increasing combat effectiveness and decreasing vulnerability. Mobile photovoltaics (PV) are a technology that can address these needs by leveraging emerging, flexible space photovoltaic technology. In this ongoing project, the development and production of a semi-rigid, lightweight, efficient solar blanket with the ability to mount on, or stow in, a backpack and recharge a warfighter's battery was undertaken. The blanket consists of a 10 x 3 solar array of 20 cm(2) epitaxial lift-off (ELO) solar cells. In the first two phases of the project, single-junction cells with an efficiency of similar to 21% under AM1.5G illumination were used. Several of these systems were outfitted during Limited Objective Experiments (LOE) in February 2012 and August 2012. In the third and most current phase of this project, the panels will be made from IMM triple-junction cells with an efficiency of 28-30% under AM1.5G illumination. The results of laboratory tests of the new prototypes, as well as a test plan and expected outcome for a field experiment are presented here.
C1 [Trautz, Kelly; Jenkins, Phillip; Walters, Robert; Scheiman, David] US Naval Res Lab, Washington, DC 20523 USA.
[Hoheisel, Raymond] George Washington Univ, Washington, DC 20523 USA.
[Tatavarti, Rao; Chan, Ray; Miyamoto, Haruki; Adams, Jessica; Elarde, Victor; Stender, Christopher; Hains, Alexander; McPheeters, Claiborne; Youtsey, Chris; Pan, Noren; Osowski, Mark] MicroLink Devices Inc, Niles, IL USA.
RP Trautz, K (reprint author), US Naval Res Lab, Washington, DC 20523 USA.
NR 4
TC 0
Z9 0
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 115
EP 119
PG 5
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100026
ER
PT S
AU Gonzalez, M
Lumb, MP
Yakes, MK
Bailey, CG
Tischler, JG
Hoheisel, R
Abell, J
Vurgaftman, I
Meyer, J
Maximenko, S
Jenkins, PP
Molina, SI
Delgado-Gonzalez, FJ
Bahena, D
Ponce, A
Adams, JGJ
Fuhrer, M
Ekins-Daukes, N
Walters, RJ
AF Gonzalez, M.
Lumb, M. P.
Yakes, M. K.
Bailey, C. G.
Tischler, J. G.
Hoheisel, R.
Abell, J.
Vurgaftman, I.
Meyer, J.
Maximenko, S.
Jenkins, P. P.
Molina, S. I.
Delgado-Gonzalez, F. J.
Bahena, D.
Ponce, A.
Adams, J. G. J.
Fuhrer, M.
Ekins-Daukes, N.
Walters, R. J.
GP IEEE
TI Towards High Efficiency Multi-Junction Solar Cells Grown on InP
Substrates
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE Multi-junction; InP; Quantum Wells; High Efficiency
AB Progress toward the development of multi-junction solar cells grown on InP substrates is presented. In this material system, the optimal bandgaps for solar energy conversion are attained while the multi-junction structure is realized under lattice matched conditions. In this work, results for the characterization of material and devices of the individual sub cells are shown. For the top cell, InAlAsSb quaternary material is being developed. For the middle, InGaAsP and InGaAlAs are studied, and for the bottom, InGaAs will provide the possibility of adding multiple quantum wells for fine bandgap tunability. In addition, we will discuss electrical characterization of the tunnel diodes.
C1 [Gonzalez, M.] Sotera Def Solut, 430 Business Pkwy,Suite 100, Annapolis Jct, MD 20701 USA.
[Lumb, M. P.; Hoheisel, R.] George Washington Univ, Washington, DC 20037 USA.
[Yakes, M. K.; Tischler, J. G.; Abell, J.; Vurgaftman, I.; Meyer, J.; Maximenko, S.; Jenkins, P. P.; Walters, R. J.] US Navy, Res Lab, Washington, DC 20375 USA.
[Bailey, C. G.; Molina, S. I.] US Navy, Res Lab, NRC Post Doc, Washington, DC 20375 USA.
[Delgado-Gonzalez, F. J.] Univ Cadiz, INNANOMAT Grp, Dpto Ciencia Mat & IMQI, E-11510 Puerto Real, Spain.
[Bahena, D.; Ponce, A.] Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX 78249 USA.
[Adams, J. G. J.] MicroLink Devices Inc, Niles, IL 60714 USA.
[Fuhrer, M.; Ekins-Daukes, N.] Imperial Coll London, Dept Phys, Blackett Lab, London SW7 2BW, England.
RP Gonzalez, M (reprint author), Sotera Def Solut, 430 Business Pkwy,Suite 100, Annapolis Jct, MD 20701 USA.
RI Molina, Sergio/A-8241-2008; Ponce Pedraza, Arturo/L-4712-2013
OI Molina, Sergio/0000-0002-5221-2852; Ponce Pedraza,
Arturo/0000-0001-5529-6468
NR 10
TC 3
Z9 3
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 145
EP 148
PG 4
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100031
ER
PT S
AU Frantz, JA
Myers, JD
Bekele, RY
Nguyen, VQ
Sanghera, JS
AF Frantz, Jesse A.
Myers, Jason D.
Bekele, Robel Y.
Nguyen, Vinh Q.
Sanghera, Jas S.
GP IEEE
TI The Effects of In2Se3 Wetting Layers on Cu(In,Ga)Se-2 Thin Films and
Devices
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE copper compounds; photovoltaic cells; solar energy; sputtering; thin
film devices; thin films
AB Thin films of Cu(In,Ga)Se-2 (CIGS) are grown on substrates coated with thin (10-60 nm) In2Se3 wetting layers. The In2Se3 changes the surface energy of the substrate, impacting nucleation and grain growth of the CIGS. Films at various stages of growth are evaluated using atomic force microscopy (AFM), scanning electron microscopy (SEM), and X-ray diffractometry (XRD). The March-Dollase approach is applied to quantify the degree of preferred orientation at each stage. Devices are fabricated using full thickness films deposited both with and without wetting layers. The morphology changes markedly in the presence of the wetting layer, even while the degree of preferred orientation and device properties remain relatively unchanged. These results offer one possible explanation for the variation in morphology that is seen in the literature, even while performance characteristics remain relatively constant among various laboratories and deposition methods.
C1 [Frantz, Jesse A.; Myers, Jason D.; Nguyen, Vinh Q.; Sanghera, Jas S.] US Naval Res Lab, Washington, DC 20375 USA.
[Bekele, Robel Y.] Univ Res Fdn, Greenbelt, MD USA.
RP Frantz, JA (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
FU Office of Naval Research and Sunlight Photonics, Inc.
FX The authors gratefully acknowledge financial support from the Office of
Naval Research and Sunlight Photonics, Inc. We also thank Dr. Syed Qadri
and Michael Hunt for their assistance with interpretation of the XRD
data.
NR 5
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 376
EP 379
PG 4
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100086
ER
PT S
AU Myers, JD
Frantz, JA
Bekele, RY
Qadri, SB
Sanghera, JS
AF Myers, Jason D.
Frantz, Jesse A.
Bekele, Robel Y.
Qadri, Syed B.
Sanghera, Jas S.
GP IEEE
TI Nucleation, Growth, and Orientation Analysis of Quaternary-Sputtered
Cu(In,Ga)Se-2
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE thin films; semiconductor growth; sputtering; x-ray diffraction;
scanning electron microscopy
ID FILM SOLAR-CELLS; PREFERRED ORIENTATION; THIN-FILMS; BACK CONTACT;
EFFICIENCY
AB Cu(In,Ga)Se-2 films of various thicknesses were deposited from a single quaternary sputtering target and evaluated using x-ray diffraction and electron microscopy. Strong evidence of Volmer-Weber growth is observed, with the bare molybdenum bottom contact still observable after 600 seconds of growth and a nominal film thickness of similar to 100 nm. X-ray diffraction characterization reveals that the degree of preferred orientation increases with additional growth time, indicating film reorganization and preferential adherence of deposited species. Further, the degree of preferred orientation decreases with the age of the sputtering target, making this a possible technique to monitor the remaining target lifetime.
C1 [Myers, Jason D.; Frantz, Jesse A.; Qadri, Syed B.; Sanghera, Jas S.] US Naval Res Lab, Washington, DC 20375 USA.
[Bekele, Robel Y.] Univ Res Fdn, Greenbelt, MD USA.
RP Myers, JD (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
FU Office of Naval Research and Sunlight Photonics
FX The authors gratefully acknowledge financial support from the Office of
Naval Research and Sunlight Photonics. We further thank Dr. Vinh Nguyen
for his expertise in material batching and Michael Hunt for his
assistance with XRD.
NR 9
TC 1
Z9 1
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 402
EP 404
PG 3
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100092
ER
PT S
AU Lumb, MP
Bailey, CG
Adams, JGJ
Hillier, G
Tuminello, F
Elarde, VC
Walters, RJ
AF Lumb, Matthew P.
Bailey, Christopher G.
Adams, Jessica G. J.
Hillier, Glen
Tuminello, Francis
Elarde, Victor C.
Walters, Robert J.
GP IEEE
TI Analytical drift-diffusion modeling of GaAs solar cells incorporating a
back mirror
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE Semiconductor device modeling; Photovoltaic cells; Reflection
ID FRONT-SURFACE-FIELD; EFFICIENCY; SIMULATION; COHERENT
AB In this work we extend the analytical drift-diffusion model, or Hovel model, to model the electrical characteristics of solar cells incorporating a back mirror. We use a compact summation approach to derive modified optical generation functions in homojunction solar cells, considering both coherent and incoherent reflections from the back reflector. We use the model to simulate the performance of a real GaAs solar cell device fabricated using an epitaxial-lift-off procedure, demonstrating excellent agreement between the simulated and measured characteristics. We also calculate the performance of the same solar cell with different back reflectors, including metal mirrors and a distributed Bragg reflector.
C1 [Lumb, Matthew P.; Bailey, Christopher G.; Walters, Robert J.] US Naval Res Lab, Washington, DC 20375 USA.
[Lumb, Matthew P.] George Washington Univ, Washington, DC 20037 USA.
[Adams, Jessica G. J.; Hillier, Glen; Tuminello, Francis; Elarde, Victor C.] MicroLink Devices, Niles, IL 60714 USA.
RP Lumb, MP (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
FU Office of Naval Research
FX The authors are extremely grateful to Dr. I. Vurgaftman and Dr. M.
Gonzalez for many helpful discussions and suggestions during in the
preparation of this paper. This work was supported by the Office of
Naval Research
NR 16
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 1063
EP 1068
PG 6
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100235
ER
PT S
AU Yoon, W
Townsend, TK
Lumb, MP
Tischler, JG
Foos, EE
AF Yoon, W.
Townsend, T. K.
Lumb, M. P.
Tischler, J. G.
Foos, E. E.
GP IEEE
TI Solution-deposited CdTe Nanocrystal Thin-films for Heterojunction Solar
Cells
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE CdTe; nanocrystal; solution process heterojunction; buffer; photovoltaic
devices; solar cells
ID LAYER
AB In this work, we develop a heterojunction solar cell using solution-based CdTe and CdSe deposition techniques. For the p-type absorber layer, CdTe thin-films were made using a layer-by-layer deposition process consisting of spin or spray coated colloidal CdTe nanocrystals followed by a sintering step. Among various buffer materials, we focus on CdSe nanocrystal thin-films due to excellent compatibility with solution processing. For the CdSe/CdTe heterojunction devices (Glass/ITO/CdSe/CdTe/Au) fabricated through spray processing, an improved open-circuit voltage of 549 +/- 8 mV with a fill factor of 50.1 +/- 1.3% was obtained under simulated one sun illumination, compared to the device with spin coating of CdTe. While the efficiency of the spray deposited device needs to be further improved, we demonstrate that spray-deposition has a potential to produce high junction quality for an efficient heterojunction solar cell.
C1 [Yoon, W.; Townsend, T. K.; Lumb, M. P.; Tischler, J. G.; Foos, E. E.] US Naval Res Lab, Washington, DC 20375 USA.
RP Yoon, W (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
NR 8
TC 0
Z9 0
U1 4
U2 5
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 1098
EP 1100
PG 3
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100243
ER
PT S
AU Lumb, MP
Yoon, W
Bailey, CG
Scheiman, D
Tischler, JG
Walters, RJ
AF Lumb, Matthew P.
Yoon, Woojun
Bailey, Christopher G.
Scheiman, David
Tischler, Joseph G.
Walters, Robert J.
GP IEEE
TI Modeling and analysis of multicolored anti-reflection coatings with high
transmittance for different solar cell materials
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE Antireflection Coatings; Colorimetry
ID SILICON; FILMS
AB In this work solar cell anti-reflection coatings tuned to give a specific hue under solar illumination are investigated. We demonstrate that it is possible to form patterned coatings with large color contrast and high transmittance. We use colorimetric and thin film optics models to explore the relationship between the color and performance of bilayer anti-reflection coatings on crystalline Si, amorphous Si and GaAs. The colorimetric predictions were verified by measuring a series of coatings deposited on Si substrates. Finally, a patterned Si sample was produced using a simple, low-cost photolithography procedure to selectively etch only the top layer of a bilayer coating to demonstrate a high-performance anti-reflection coating with strong color contrast.
C1 [Lumb, Matthew P.; Yoon, Woojun; Bailey, Christopher G.; Scheiman, David; Tischler, Joseph G.; Walters, Robert J.] Naval Res Lab, Washington, DC 20375 USA.
RP Lumb, MP (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
NR 18
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 1888
EP 1893
PG 6
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100421
ER
PT S
AU Bekele, RY
Frantz, JA
Myers, JD
Nguyen, VQ
Sanghera, JS
Bruce, A
Frolov, SV
Cyrus, M
AF Bekele, R. Y.
Frantz, J. A.
Myers, J. D.
Nguyen, V. Q.
Sanghera, J. S.
Bruce, A.
Frolov, S. V.
Cyrus, M.
GP IEEE
TI CIGS Sputtering Targets Fabricated From Reclaimed Materials
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE copper compounds; photovoltaic cells; thin film devices; recycling;
sputtering; etching
ID CU(IN,GA)SE-2; SELENIZATION
AB The development of techniques to sputter Cu(In,Ga)Se2 (CIGS) thin films from a single quaternary target has the potential to make industrial scale fabrication of large area thin-film photovoltaic (PV) devices possible due to sputtering's well established ability to deposit uniform films over large areas. However, sputtering has the disadvantage that much of the target material becomes waste. Material is preferentially consumed from a "racetrack" that forms a ring on the target. Once this racetrack consumes enough material to reach the backing plate the target must be replaced even though there is still plenty of unused material in the other regions of the target. In this work we present a technique to reclaim the material in the spent targets and use them to make new targets that produce PV devices with equal efficiencies as devices made freshly batched targets.
C1 [Bekele, R. Y.] Univ Res Fdn, Greenbelt, MD 20770 USA.
[Frantz, J. A.; Myers, J. D.; Nguyen, V. Q.; Sanghera, J. S.] US Naval Acad, Washington, DC 21402 USA.
[Bruce, A.; Frolov, S. V.; Cyrus, M.] Sunlight Photon Inc, South Plainfield, NJ USA.
RP Bekele, RY (reprint author), Univ Res Fdn, Greenbelt, MD 20770 USA.
NR 10
TC 1
Z9 1
U1 0
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 1938
EP 1940
PG 3
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100433
ER
PT S
AU Yakes, MK
Lumb, MP
Bailey, CG
Gonzalez, M
Walters, RJ
AF Yakes, Michael K.
Lumb, Matthew P.
Bailey, Christopher G.
Gonzalez, Maria
Walters, Robert J.
GP IEEE
TI Strain Balanced Double Quantum Well Tunnel Junctions
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE tunnel junction; III-V multijunction solar cells; quantum wells; strain
balancing
ID MULTIJUNCTION SOLAR-CELLS; V COMPOUND SEMICONDUCTORS
AB Quantum well tunnel junctions have been shown to improve the performance of tunnel junctions within a concentrator solar cell with low absorption loss. In this work, we have demonstrated a strain balanced quantum well which may be used to incorporate materials within the tunnel junction which have more desirable bandgaps without any degradation in material properties. Our strained InAlAs/InGaAs QWTJ strain balanced to an InP substrate shows dramatically improved performance improvement over the baseline device in peak tunneling current and a 45,000x improvement in differential resistance.
C1 [Yakes, Michael K.; Lumb, Matthew P.; Bailey, Christopher G.; Gonzalez, Maria; Walters, Robert J.] Naval Res Lab, Washington, DC 20375 USA.
RP Yakes, MK (reprint author), Naval Res Lab, Washington, DC 20375 USA.
NR 14
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 2147
EP 2150
PG 4
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100483
ER
PT S
AU Maximenko, SI
Messenger, SR
Hoheisel, R
Scheiman, D
Gonzalez, M
Lorentzen, J
Jenkins, PP
Walters, RJ
AF Maximenko, S. I.
Messenger, S. R.
Hoheisel, R.
Scheiman, D.
Gonzalez, M.
Lorentzen, J.
Jenkins, P. P.
Walters, R. J.
GP IEEE
TI Characterization Of High Fluence Irradiations On Advanced Triple
Junction Solar Cells
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE Multijunction solar cells; SEM; diffusion length; irradiation damage
AB Reported is the characterization of irradiated InGaP2/GaAs/Ge multijunction (MJ) solar cells using the cathodoluminescence (CL) imaging/spectroscopy and electron beam induced current (EBIC) modes of scanning electron microscopy (SEM). These techniques were applied to verify the influence of radiation damage on the optoelectronic properties of each subcell in the monolithic triple junction structure and correlate them with the illuminated (AM0, 1 sun, 25 degrees C) current-voltage (IV) and quantum efficiency (QE) characteristics.
C1 [Maximenko, S. I.; Messenger, S. R.; Scheiman, D.; Lorentzen, J.; Jenkins, P. P.; Walters, R. J.] Naval Res Lab, Washington, DC 20375 USA.
[Hoheisel, R.] George Washington Univ, Washington, DC 20052 USA.
[Gonzalez, M.] Sotera Def Solut, Annapolis, MD 20701 USA.
RP Maximenko, SI (reprint author), Naval Res Lab, Washington, DC 20375 USA.
NR 10
TC 2
Z9 2
U1 1
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 2797
EP 2800
PG 4
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100637
ER
PT S
AU Wrosch, M
Walmsley, N
Stern, T
Hausgen, P
Wilt, D
Jenkins, P
AF Wrosch, Matthew
Walmsley, Nicholas
Stern, Theodore
Hausgen, Paul
Wilt, David
Jenkins, Phillip
GP IEEE
TI Laminated Solar Panels for Space Using Multi-Cell Transparent Covers
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE solar cell assembly; encapsulated solar panels; inverted metamorphic
cells; space environmental durability
AB An approach to laying down, interconnecting, and encapsulating a space solar panel module is described that uses large-area multi-cell transparent covers. Coverglass replacement materials were evaluated and tested in a variety of environments, including a flight test on MISSE-7, and found to be durable in the LEO environment, with approaches to extending durability to GEO and other high radiation environments. The multi-cell cover approach enables assembling advanced cells, such as IMM, into a thin array using a laminating approach that implements co-planar front contact cells with thermosonic wire bonding interconnection. Coupons of the encapsulated panels were fabricated and found to have good durability in thermal cycling.
C1 [Wrosch, Matthew; Walmsley, Nicholas; Stern, Theodore] Vanguard Space Technol Inc, San Diego, CA 92126 USA.
[Hausgen, Paul; Wilt, David] US Air Force, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA.
[Jenkins, Phillip] US Navy, Res Lab, Washington, DC 20002 USA.
RP Wrosch, M (reprint author), Vanguard Space Technol Inc, San Diego, CA 92126 USA.
FU Air Force Research Laboratory Space Vehicles Directorate; Naval Research
Laboratory
FX This work was supported by the Air Force Research Laboratory Space
Vehicles Directorate and the Naval Research Laboratory
NR 1
TC 1
Z9 1
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 2809
EP 2811
PG 3
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100640
ER
PT S
AU Warner, JH
Messenger, SR
Walters, RJ
Hoheisel, R
Romero, MJ
AF Warner, Jeffrey H.
Messenger, Scott R.
Walters, Robert J.
Hoheisel, Raymond
Romero, Manuel J.
GP IEEE
TI Cathodoluminescence Study of Irradiated p(+)n GaAs Solar Cells
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
ID DAMAGE; LIFETIME; DIODES
AB In this paper, cathodoluminescence (CL) spectra were measured on p(+)n GaAs solar cells after irradiation by protons at different fluences and energies. A damage constant (tau K-0(tau)) is determined at each proton energy by monitoring changes in the emitted CL intensity. The energy dependence of the CL damage constant is compared with the calculations of nonionizing energy loss (NIEL). It was found that the energy dependence of the CL damage constant closely tracks that for the open circuit voltage.
C1 [Warner, Jeffrey H.; Messenger, Scott R.; Walters, Robert J.] US Naval Res Lab, Washington, DC 20375 USA.
[Hoheisel, Raymond] George Washington Univ, Washington, DC 20052 USA.
[Romero, Manuel J.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Warner, JH (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
NR 14
TC 0
Z9 0
U1 0
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 2816
EP 2820
PG 5
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100642
ER
PT S
AU Wilt, D
Snyder, N
Jenkins, P
Gray, A
AF Wilt, David
Snyder, Neil
Jenkins, Phillip
Gray, Andy
GP IEEE
TI Novel Flexible Solar Cell Coverglass for Space Photovoltaic Devices
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
AB A flexible space solar cell coverglass replacement called Pseudomorphic Glass (PMG) has been under investigation in hopes of providing a robust, high transmissivity replacement for conventional coverglass. PMG is composed of ceria doped borosilicate or fused silica beads incorporated in a variety of polymer matrices. The glass beads provide the primary radiation protection and the polymer matrix provides the mechanical integrity. PMG development has recently focused on optimization of optical performance (transmissivity and scattering), bead material and development of optical coatings
C1 [Wilt, David] Air Force Res Lab Space Vehicles Directorate, Kirtland AFB, NM 87116 USA.
[Snyder, Neil] Schafer Corp, Albuquerque, NM 87116 USA.
[Jenkins, Phillip] Naval Res Lab, Washington, DC USA.
[Gray, Andy] Qioptiq, Bodelwyddan, England.
RP Wilt, D (reprint author), Air Force Res Lab Space Vehicles Directorate, Kirtland AFB, NM 87116 USA.
NR 8
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 2835
EP 2839
PG 5
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100646
ER
PT S
AU Jenkins, PP
Bentz, DC
Barnds, J
Binz, CR
Messenger, SR
Warner, JH
Krasowski, MJ
Prokop, NF
Spina, DC
O'Neill, M
Eskenazi, M
Brandhorst, HW
Downard, E
Crist, KC
AF Jenkins, Phillip P.
Bentz, Douglas C.
Barnds, Jim
Binz, Christopher R.
Messenger, Scott R.
Warner, Jeffrey H.
Krasowski, Michael J.
Prokop, Norman F.
Spina, Dan C.
O'Neill, Mark
Eskenazi, Michael
Brandhorst, Henry W.
Downard, Eric
Crist, Kevin C.
GP IEEE
TI Initial Results from the TacSat-4 Solar Cell Experiment
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE radiation effects; photovoltaic cells
AB The TacSat-4 spacecraft carries a solar cell experiment characterizing a string of 3 triple-junction 1-sun solar cells and a string of triple junction solar cells under a flexible, linear Fresnel lens providing approximately 6 times solar concentration. TacSat-4 flies in a highly elliptical, four hour orbit, passing through proton and electron radiation belts 12 times per day. The damage to solar cells in this environment is severe. In this paper we examine the solar cell damage rates of the two solar cell strings.
C1 [Jenkins, Phillip P.; Barnds, Jim; Binz, Christopher R.; Messenger, Scott R.; Warner, Jeffrey H.] US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
[Bentz, Douglas C.] S GSS, West Melbourne, FL 32904 USA.
[Krasowski, Michael J.; Prokop, Norman F.; Spina, Dan C.] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA.
[O'Neill, Mark] LLC, Keller, TX 76244 USA.
[Eskenazi, Michael] ATK Space, Goleta, CA 93117 USA.
[Brandhorst, Henry W.] LLC, Carbon Free Energy, Auburn, AL 36832 USA.
[Downard, Eric; Crist, Kevin C.] EMCORE Photovolta, Albuquerque, NM 87123 USA.
RP Jenkins, PP (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
FU The Office of Naval Research (ONR); Office of Force Transformation
(OFT); Operationally Responsive Space (ORS)
FX The Office of Naval Research (ONR) sponsored the TSCE payload, as well
as the TacSat-4 mission. Additionally, the Office of Force
Transformation (OFT) and Operationally Responsive Space (ORS) Office
sponsored portions of TacSat-4 development and operations.
NR 10
TC 2
Z9 2
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 3108
EP 3111
PG 4
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100701
ER
PT S
AU Likari, J
Okumura, T
Iwai, S
Stone, SE
Gasner, S
Jenkins, PP
Trautz, K
Cho, M
Lombardi, RE
Toyoda, K
AF Likari, Justin
Okumura, Teppei
Iwai, Shunsuke
Stone, Stephen E.
Gasner, Steve
Jenkins, Phillip P.
Trautz, Kelly
Cho, Mengu
Lombardi, Robert E.
Toyoda, Kazuhiro
GP IEEE
TI Initial Results from Primary Arc effects on Solar Cells At LEO (PASCAL)
Flight Experiment
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE spacecraft charging
AB Repeated low power, or primary arcing, may adversely affect the performance of space solar cells. The cumulative effects of primary arcing on common solar cell performance parameters has been the subject of numerous ground studies in simulated plasma environments. The Primary Arc effects on Solar Cells At LEO (PASCAL) flight experiment is presently active aboard in the International Space Station (ISS) and characterizing such effects in-orbit for numerous state-of-the-art space solar cells with initial results presented herein.
C1 [Likari, Justin; Stone, Stephen E.; Lombardi, Robert E.] Lockheed Martin Space Syst, Newtown, PA 18940 USA.
[Okumura, Teppei] Japan Aerosp Explorat Agcy, Chofu, Tokyo, Japan.
[Iwai, Shunsuke; Cho, Mengu; Toyoda, Kazuhiro] Kyushu Inst Technol, Kitakyushu, Fukuoka, Japan.
[Gasner, Steve] Lockheed Martin Space Syst, Sunnyvale, CA USA.
[Jenkins, Phillip P.; Trautz, Kelly] US Naval Res Lab, Washington, DC USA.
RP Likari, J (reprint author), Lockheed Martin Space Syst, Newtown, PA 18940 USA.
NR 4
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 3112
EP 3114
PG 3
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100702
ER
PT S
AU Messenger, SR
Hoheise, R
Lorentzen, J
Scheiman, D
Warner, JH
Gonzalez, M
Jenkins, PP
AF Messenger, S. R.
Hoheise, R.
Lorentzen, J.
Scheiman, D.
Warner, J. H.
Gonzalez, M.
Jenkins, P. P.
GP IEEE
TI High Fluence Irradiations on Triple Junction Solar Cells
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE multijunction solar cells; radiation effects; displacement damage dose
ID DEGRADATION
AB Triple junction GaInP/InGaAs/Ge solar cells were irradiated with 3 MeV protons to extreme fluences as high as 10(15) p(+)/cm(2). In this paper, IV and QE results will be presented and a model will be developed to explain the radiation behavior. A carrier removal damage mechanism is evident which actually aids in the radiation hardness of these devices.
C1 [Messenger, S. R.; Lorentzen, J.; Scheiman, D.; Warner, J. H.; Jenkins, P. P.] US Naval Res Lab, Washington, DC 20375 USA.
[Hoheise, R.] George Washington Univ, Washington, DC 20052 USA.
[Gonzalez, M.] Sotera Def Solut, Annapolis Jct, MD 20701 USA.
RP Messenger, SR (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
NR 12
TC 1
Z9 1
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 3121
EP 3127
PG 7
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100704
ER
PT S
AU Forbes, DV
Bailey, C
Polly, SJ
Podelll, A
Hubbard, SM
AF Forbes, David V.
Bailey, Christopher
Polly, Stephen J.
Podelll, Adam
Hubbard, Seth M.
GP IEEE
TI The Effect of GaAs Capping Layer Thickness on Quantum Dot Solar Cell
Performance
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE bandgap engineering; GaAs; III-V nanostructures; photovoltaic cell;
quantum dot
ID EFFICIENCY
AB The use of nanostructures such as quantum dots (QD) offers tremendous potential to realize high-efficiency photovoltaic (PV) cells. The optimization of the electronic structure of the layers within the QD region should lead to improved PV performance. This includes the QD layer itself, but also the surrounding barrier and/or strain balancing layers that comprise the QD active region. In this paper, the effect of the GaAs capping layer thickness (i.e. the first layer grown following QD) on the optoelectronic properties of InAs QDs was investigated. The GaAs capping layer plays a crucial role in the physical and optoelectronic properties of the QD. The GaAs capping thickness strongly modifies the InAs QD wavelength and also enhances the QD emission relative to the wetting layer (WL) emission. This behavior implies a suppression of WL emission that is thought to be a drawback to high-efficiency photovoltaic performance. In the final paper, we investigate how this WL PL-suppression affects the performance of QD-enhanced GaAs single junction solar cell performance.
C1 [Forbes, David V.; Polly, Stephen J.; Podelll, Adam; Hubbard, Seth M.] Rochester Inst Technol, Rochester, NY 14623 USA.
[Bailey, Christopher] US Naval Res Lab, Washington, DC USA.
RP Forbes, DV (reprint author), Rochester Inst Technol, Rochester, NY 14623 USA.
RI Polly, Stephen/C-1776-2015
OI Polly, Stephen/0000-0002-7563-6738
NR 15
TC 1
Z9 1
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 3203
EP 3207
PG 5
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100718
ER
PT S
AU Gonzalez, M
Hoheisel, R
Lumb, MP
Scheiman, DA
Bailey, CG
Lorentzen, J
Maximenko, S
Messenger, SR
Jenkins, PP
Tibbits, TND
Imaizumi, M
Ohshima, T
Sato, S
Walters, RJ
AF Gonzalez, M.
Hoheisel, R.
Lumb, M. P.
Scheiman, D. A.
Bailey, C. G.
Lorentzen, J.
Maximenko, S.
Messenger, S. R.
Jenkins, P. P.
Tibbits, T. N. D.
Imaizumi, M.
Ohshima, T.
Sato, S.
Walters, R. J.
GP IEEE
TI Radiation Study in Quantum Well III-V Multi-Junction Solar Cells
SO 2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
SE IEEE Photovoltaic Specialists Conference
LA English
DT Proceedings Paper
CT 39th IEEE Photovoltaic Specialists Conference (PVSC)
CY JUN 16-21, 2013
CL Tampa, FL
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Electron Devices Soc, Inst Elect & Elect Engineers Photon Soc, Inst Elect & Elect Engineers Power & Energy Soc, US Photovolta Mfg Consort, AZoCleantech Com, Latin Amer Renovable, Photovolta Int, PVTech, Solar Novus Today & Photon, Photon
DE Space; Radiation; Electron; Proton; III-V; Multi-Junction; Multi-Quantum
Well; MQW; Solar cells
AB The effect of particle radiation in multi quantum well (MQW) multi-junction InGaP/MQW-InGaAs/Ge solar cells was studied. For comparison purposes, and to identify the origin of the degradation, the same study was performed in the correspondent iso-type cells. Results show that under 1MeV electron irradiation the MQW-middle junction dictates the degradation of the triple junction cell. Alternative, more radiation hard, designs are presented.
C1 [Gonzalez, M.] Sotera Def Solut, 430 Business Pkwy,Suite 100, Annapolis Jct, MD 20701 USA.
[Gonzalez, M.; Hoheisel, R.; Lumb, M. P.; Lorentzen, J.; Maximenko, S.; Messenger, S. R.; Jenkins, P. P.; Walters, R. J.] US Naval Res Lab, Washington, DC 20375 USA.
[Hoheisel, R.; Lumb, M. P.; Scheiman, D. A.] George Washington Univ, Washington, DC 20037 USA.
[Bailey, C. G.] US Naval Res Lab, NRC Post Doc Residing, Washington, DC 20375 USA.
[Tibbits, T. N. D.] QuantaSol Ltd, Kingston Upon Thames, Surrey, England.
[Imaizumi, M.] Japan Aerosp Explorat Agcy JAXA, Tsukuba, Ibaraki 3058505, Japan.
[Ohshima, T.; Sato, S.] Japan Atom Energy Agcy JAEA, Takasaki, Gumma 3701292, Japan.
RP Gonzalez, M (reprint author), Sotera Def Solut, 430 Business Pkwy,Suite 100, Annapolis Jct, MD 20701 USA.
NR 5
TC 2
Z9 2
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0160-8371
BN 978-1-4799-3299-3
J9 IEEE PHOT SPEC CONF
PY 2013
BP 3233
EP 3236
PG 4
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA BB0AV
UT WOS:000340054100725
ER
PT J
AU Jones, DE
Hammond, P
Platoni, K
AF Jones, David E.
Hammond, Patricia
Platoni, Kathy
TI Traumatic Event Management in Afghanistan: A Field Report on Combat
Applications in Regional Command-South
SO MILITARY MEDICINE
LA English
DT Editorial Material
AB This article provides information on the use of Traumatic Event Management (TEM) strategies to debrief combat arms personnel whose units sustained traumatic losses in Afghanistan. The specific focus is on the application of Event-Driven Battlemind Psychological Debriefings to combat units. This article offers the first published account of TEM services employed in southern Afghanistan during intensive surge operations in 2009-2010. This article unfolds in three parts: (1) background to the region in which the debriefings occurred; (2) three case examples with a data summary of types of incidents observed; and (3) discussion of observations, lessons learned, and recommendations for training future clinicians to provide effective debriefings to combat arms personnel.
C1 [Jones, David E.] Naval Med Ctr Portsmouth, Portsmouth, VA 23708 USA.
[Hammond, Patricia] US Army, John F Kennedy Special Warfare Ctr & Sch, ATTN AOJK GRP, Stop Ft Bragg, NC 28310 USA.
[Platoni, Kathy] Armed Forces Reserve Ctr, Madison, WI 53704 USA.
RP Jones, DE (reprint author), Naval Med Ctr Portsmouth, 620 John Paul Jones Circle, Portsmouth, VA 23708 USA.
NR 10
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 2013
VL 178
IS 1
BP 4
EP 10
DI 10.7205/MILMED-D-12-00070
PG 7
WC Medicine, General & Internal
SC General & Internal Medicine
GA AN7TV
UT WOS:000340804800006
PM 23356111
ER
PT J
AU Trone, DW
Cipriani, DJ
Raman, R
Wingard, DL
Shaffer, RA
Macera, CA
AF Trone, Daniel W.
Cipriani, Daniel J.
Raman, Rema
Wingard, Deborah L.
Shaffer, Richard A.
Macera, Caroline A.
TI The Association of Self-Reported Measures With Poor Training Outcomes
Among Male and Female U.S. Navy Recruits
SO MILITARY MEDICINE
LA English
DT Article
ID EXERCISE-RELATED INJURIES; STRESS-FRACTURES; RISK-FACTORS;
MUSCULOSKELETAL INJURIES; YOUNG MEN; MENSTRUAL IRREGULARITY;
PHYSICAL-ACTIVITY; BONE-DENSITY; ARMY; PREDICTORS
AB This prospective study evaluated the association of self-reported health habits and behaviors in 2,930 Navy recruits with poor training outcomes, defined as graduating late or separating from training. Although 17% of the men and 21% of the women had a poor training outcome, results suggest that some self-reported measures were associated with poor training outcomes. Men who did not run or jog at least 1 month before basic training or had a previous lower limb injury without complete recovery and women reporting the same or less physical activity compared with their same-age counterparts were more likely to have a poor training outcome. An important first step in decreasing poor training outcomes is encouraging incoming recruits to participate in physical activity and taking steps to identify and rehabilitate recruits who are not completely healed from a lower limb musculoskeletal injury before reporting to basic training.
C1 [Trone, Daniel W.; Shaffer, Richard A.; Macera, Caroline A.] Naval Hlth Res Ctr, Dept Behav Sci & Epidemiol, San Diego, CA 92106 USA.
[Trone, Daniel W.; Wingard, Deborah L.] Univ Calif San Diego, Dept Family & Prevent Med, Div Epidemiol, La Jolla, CA 92093 USA.
[Trone, Daniel W.; Macera, Caroline A.] San Diego State Univ, Grad Sch Publ Hlth, San Diego, CA 92182 USA.
[Cipriani, Daniel J.] Chapman Univ, Dept Phys Therapy, Orange, CA 92866 USA.
[Raman, Rema] Univ Calif San Diego, Dept Family & Prevent Med, Div Biostat & Bioinformat, La Jolla, CA 92093 USA.
RP Trone, DW (reprint author), Naval Hlth Res Ctr, Dept Behav Sci & Epidemiol, 140 Sylvester Rd, San Diego, CA 92106 USA.
NR 34
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 JAN
PY 2013
VL 178
IS 1
BP 43
EP 49
DI 10.7205/MILMED-D-12-00271
PG 7
WC Medicine, General & Internal
SC General & Internal Medicine
GA AN7TV
UT WOS:000340804800013
PM 23356118
ER
PT J
AU Taylor, MK
AF Taylor, Marcus K.
TI Dehydroepiandrosterone and Dehydroepiandrosterone Sulfate: Anabolic,
Neuroprotective, and Neuroexcitatory Properties in Military Men
SO MILITARY MEDICINE
LA English
DT Article
ID SALIVARY ALPHA-AMYLASE; TRAUMATIC BRAIN-INJURY; ADRENERGIC ACTIVITY;
STRESS; RECEPTOR; CORTICOSTERONE; DHEA; HIPPOCAMPAL; RAT; METABOLITES
AB Evidence links dehydroepiandrosterone (DHEA) and dehydroepiandrosterone sulfate (DHEAS) to crucial military health issues, including operational stress, resilience, and traumatic brain injury. This study evaluated the anabolic, neuroprotective, and neuroexcitatory properties of DHEA(S) in healthy military men. A salivary sample was obtained from 42 men and assayed for DHEA(S), testosterone, nerve growth factor (NGF; which supports nerve cell proliferation), and salivary alpha amylase (sAA; a proxy of sympathetic nervous system function). Separate regression analyses were conducted with DHEA and DHEAS as independent variables, and testosterone, NGF, and sAA as dependent variables, respectively. The models explained 23.4% of variance in testosterone (p < 0.01), 17.2% of variance in NGF (p < 0.01), and 7.4% of variance in sAA (p = 0.09). Standardized beta coefficients revealed that DHEA independently influenced testosterone (beta = 0.40, p < 0.01), whereas DHEAS independently influenced NGF (beta = 0.48, p < 0.01) and sAA (beta = 0.36, p < 0.05). DHEA demonstrated anabolic properties, whereas DHEAS demonstrated neuroprotective and neuroexcitatory properties in military men. This area of study has broad implications for stress inoculation, traumatic brain injury rehabilitation, and regenerative medicine in military personnel.
C1 Naval Hlth Res Ctr, Dept Behav Sci & Epidemiol, Behav Sci Lab, San Diego, CA 92106 USA.
RP Taylor, MK (reprint author), Naval Hlth Res Ctr, Dept Behav Sci & Epidemiol, Behav Sci Lab, San Diego, CA 92106 USA.
FU Office of Naval Research [PB401]
FX The author would like to thank Michelle LeWark for her editorial
expertise. This work was supported by the Office of Naval Research,
under Work Unit No. PB401.
NR 33
TC 10
Z9 11
U1 1
U2 4
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 2013
VL 178
IS 1
BP 100
EP 106
DI 10.7205/MILMED-D-12-00296
PG 7
WC Medicine, General & Internal
SC General & Internal Medicine
GA AN7TV
UT WOS:000340804800022
PM 23356127
ER
PT J
AU Glaser, DJ
Rahman, AS
Smith, KA
Chan, DW
AF Glaser, Darrell J.
Rahman, Ahmed S.
Smith, Katherine A.
Chan, Daniel W.
TI Product Differentiation and Consumer Surplus in the Microfinance
Industry
SO B E JOURNAL OF ECONOMIC ANALYSIS & POLICY
LA English
DT Article
DE microfinance; market concentration; Bertrand product differentiation
ID COMPETITION; INSTITUTIONS; MARKET
AB During the last 15 years, high repayment rates of up to 96% have drawn many new lending institutions to the microfinance industry. While a decade ago, the industry was dominated primarily by monopolies ostensibly focused on social welfare, the current market is filled with various types of financial institutions offering a variety of lending arrangements. The goal of this article is to capture the degree to which consumers have benefitted from these structural changes within the microfinance industry. Using a Bertrand differentiated product framework, wemodel the price setting and demand functions ofMicrofinance Institutions (MFIs). With a 7 year panel data set covering over 70 countries, we empirically estimate parameters of the Nash price equilibrium and simulate the shape and structure of the underlying demand equation. We use simulated demand parameters to derive and compare measures of consumers' surplus across regions and countries. Our research indicates that growth in the MFI industry has brought about declines in market concentration, and furthermore that each 0.01 unit change in the Hirschman-Herfindahl index correlates with a 2% increase in consumers' surplus.
C1 [Glaser, Darrell J.] US Naval Acad, Dept Econ, Annapolis, MD 21402 USA.
RP Glaser, DJ (reprint author), US Naval Acad, Dept Econ, 589 McNair Rd Mail Stop 10-D, Annapolis, MD 21402 USA.
EM dglaser@usna.edu; rahman@usna.edu; ksmith@usna.edu; danielcws@gmail.com
NR 22
TC 0
Z9 0
U1 1
U2 7
PU WALTER DE GRUYTER GMBH
PI BERLIN
PA GENTHINER STRASSE 13, D-10785 BERLIN, GERMANY
SN 1935-1682
J9 BE J ECON ANAL POLI
JI B E J. Econ. Anal. Policy
PY 2013
VL 13
IS 2
BP 991
EP 1022
DI 10.1515/bejeap-2012-0046
PG 32
WC Economics
SC Business & Economics
GA AN0RO
UT WOS:000340291900017
ER
PT J
AU Pande, CS
AF Pande, C. S.
BE Srivatsan, TS
Imam, MA
Srinivasan, R
TI FUNDAMENTALS OF FATIGUE CRACK INITIATION and PROPAGATION: SOME THOUGHTS
SO FATIGUE OF MATERIALS II: ADVANCES AND EMERGENCES IN UNDERSTANDING
LA English
DT Proceedings Paper
CT 2nd International Symposium on Fatigue of Materials - Advanced and
Emergences in Understanding held during the Materials Science and
Technology (MS and T) Meeting
CY OCT 07-11, 2012
CL Pittsburgh, PA
SP Minerals, Met & Mat Soc, Mech Behav Mat Comm, ASM Int
DE fatigue; metallic materials; dislocations; cracks shielding
ID HIGH STRESS FATIGUE; SINGLE-CRYSTALS; DISLOCATION EMISSION; STAGE-I;
GROWTH; MODEL; METALS; THRESHOLD; TIP; PLASTICITY
AB The prediction of fatigue properties of structural materials is rightly recognized as one of the most important engineering problem. Therefore a basic understanding of the fundamental nature of fatigue crack initiation and growth in metals has long been a major scientific challenge starting with the first dislocation model of fatigue crack growth of Bilby et al. in 1963. For this purpose understanding the process of emission of dislocations from cracks, and determining precise expressions for the size of the plastic zone size, the crack-tip opening displacement and the energy release rate of the cracks are some of the major technical challenges. In this short paper we comment briefly on some of our important recent results obtained theoretically and by in-situ TEM studies and discuss how they may contribute to the understanding of the phenomena
C1 Naval Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
RP Pande, CS (reprint author), Naval Res Lab, Div Mat Sci & Technol, 4555 Overlook Ave SW, Washington, DC 20375 USA.
NR 71
TC 0
Z9 0
U1 0
U2 0
PU JOHN WILEY & SONS
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER, W SUSSEX PO 19 8SQ, ENGLAND
BN 978-1-11852-093-2
PY 2013
BP 3
EP 15
PG 13
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA BA9BJ
UT WOS:000339099500001
ER
PT J
AU Imam, MA
Pao, PS
Bayles, RA
AF Imam, M. Ashraf
Pao, Peter S.
Bayles, Robert A.
BE Srivatsan, TS
Imam, MA
Srinivasan, R
TI STRESS-CORROSION CRACKING AND FATIGUE CRACK GROWTH BEHAVIOR OF TI-6AL-4V
PLATES CONSOLIDATED FROM LOW COST POWDERS
SO FATIGUE OF MATERIALS II: ADVANCES AND EMERGENCES IN UNDERSTANDING
LA English
DT Proceedings Paper
CT 2nd International Symposium on Fatigue of Materials - Advanced and
Emergences in Understanding held during the Materials Science and
Technology (MS and T) Meeting
CY OCT 07-11, 2012
CL Pittsburgh, PA
SP Minerals, Met & Mat Soc, Mech Behav Mat Comm, ASM Int
DE Titanium alloy; Armstrong-process; hydride-process; stress-corrosion
cracking; fatigue crack growth
AB Titanium is highly desirable for a wide range of applications because of its combination of high strength, low density and outstanding corrosion characteristics. However, the cost of titanium, produced by conventional technology, is high compared to steel and aluminum, which is a result of high extraction and processing costs. New approaches are being investigated maintaining required quality while lowering the cost of finished products. Ti alloy powder, Ti-6Al-4V, manufactured by a low cost hydride-process and consolidated into flat products (sheet, plate), were studied. The results of the study were compared with the properties obtained from plates of Armstrong Titanium consolidated powder. To remove the prior history of consolidation, the plates are beta annealed and the test results are compared with "as received" condition. The mechanism of the fatigue crack growth rate difference, fracture toughness, and stress-corrosion cracking resistance in terms of the respective Ti-6Al-4V microstructure differences will be discussed.
C1 [Imam, M. Ashraf; Pao, Peter S.; Bayles, Robert A.] Naval Res Lab, Mat Sci & Component Technol Directorate, Washington, DC 20375 USA.
RP Imam, MA (reprint author), Naval Res Lab, Mat Sci & Component Technol Directorate, Washington, DC 20375 USA.
NR 7
TC 0
Z9 0
U1 0
U2 1
PU JOHN WILEY & SONS
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER, W SUSSEX PO 19 8SQ, ENGLAND
BN 978-1-11852-093-2
PY 2013
BP 105
EP 1116
PG 1012
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA BA9BJ
UT WOS:000339099500008
ER
PT S
AU Foley, MP
Worosz, CJ
Sweely, KD
Haverhals, LM
Henderson, WA
De Long, HC
Trulove, PC
AF Foley, M. P.
Worosz, C. J.
Sweely, K. D.
Haverhals, L. M.
Henderson, W. A.
De Long, H. C.
Trulove, P. C.
BE Smart, MC
Inaba, M
Fenton, J
Henderson, W
Ue, M
Doughty, DH
Jow, TR
Ishikawa, M
Bugga, RV
Tatsumi, K
Lucht, B
Trulove, PC
TI Structure, Disorder, and Crystallization: Lessons Learned from Analysis
of Lithium Trifluoromethanesulfonate
SO LITHIUM-ION BATTERIES -AND- NON-AQUEOUS ELECTROLYTES FOR LITHIUM
BATTERIES - PRIME 2012
SE ECS Transactions
LA English
DT Proceedings Paper
CT Symposia on Lithium-Ion Batteries and Non-Aqueous Electrolytes for
Lithium Batteries
CY OCT 07-12, 2012
CL Honolulu, HI
SP Electrochem Soc, Electrochem Soc Japan, Japan Soc Appl Phys, Korean Electrochem Soc, Royal Australian Chem Inst, Electrochemistry Div, Chinese Soc Electrochemistry, Battery Div, Energy Technol Div, Phys & Analyt Electrochemistry Div
ID PHASE-BEHAVIOR; SOLVATION; TRIFLATE
AB Batteries are one of the most impactful inventions humankind has ever developed. Lithium-ion energy cells represent a significant advance in battery technology. Electrolytes used in batteries are still not well understood in terms of solution structure. We investigate electrolyte solvate structure with the aid of differential scanning calorimetry, Raman spectroscopy, and X-ray diffraction. Here is a report on the solvate structure(s) present in mixtures of propylene carbonate (PC) and lithium trifluoromethanesulfonate (LiTf). Mixtures of racemic PC with LiTf form glasses whereas enantiomerically pure PC, both R and S isomers, forms mixtures with more complex phase behavior. At concentrations approaching a 1:1 molar ratio of solvent to salt, a solvate that melts at similar to 150 degrees C was detected. A crystal of the 1:1 solvate of the R-(+)-PC:LiTf was successfully grown and analyzed by X-ray diffraction. This solvate has an aggregated structure where the Li+ cations are tetrahedrally coordinated. Three directions of coordination come from Tf- anions acting as a bridging ligand between three different Li+ cations and the 4th direction of coordination comes from the carbonyl oxygen of the solvent molecule.
C1 [Foley, M. P.; Worosz, C. J.; Sweely, K. D.; Haverhals, L. M.; Trulove, P. C.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
[Henderson, W. A.] N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA.
[De Long, H. C.] Air Force Off Scientif Res, Arlington, VA 22203 USA.
RP Foley, MP (reprint author), US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering [DE-SC0002169, DE-SC0001419]
FX The authors wish to express their gratitude to the U.S. Department of
Energy, Office of Basic Energy Sciences, Division of Materials Sciences
and Engineering which fully supported this research under Awards
DE-SC0002169 and DE-SC0001419. We also wish to thank the Air Force
Office of Scientific Research, U.S. Naval Academy and North Carolina
State University for personnel.
NR 4
TC 0
Z9 0
U1 2
U2 6
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-60768-414-5
J9 ECS TRANSACTIONS
PY 2013
VL 50
IS 26
BP 37
EP 43
DI 10.1149/05026.0037ecst
PG 7
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BA8VT
UT WOS:000338893200004
ER
PT B
AU Alspaugh, TA
Asuncion, HU
Scacchi, W
AF Alspaugh, Thomas A.
Asuncion, Hazeline U.
Scacchi, Walt
BE Jansen, S
Brinkkemper, S
Cusumano, MA
TI The challenge of heterogeneously-licensed systems in open architecture
software ecosystems
SO SOFTWARE ECOSYSTEMS: ANALYZING AND MANAGING BUSINESS NETWORKS IN THE
SOFTWARE INDUSTRY
LA English
DT Article; Book Chapter
C1 [Alspaugh, Thomas A.] Univ Calif Irvine, Inst Software Res, Irvine, CA 92717 USA.
[Asuncion, Hazeline U.] Georgetown Univ, Washington, DC 20057 USA.
[Alspaugh, Thomas A.] Naval Res Lab, Software Cost Reduct, Washington, DC USA.
[Alspaugh, Thomas A.] Naval Res Lab, Project A 7, Washington, DC USA.
[Asuncion, Hazeline U.] Univ Washington, Comp & Software Syst Program, Bothell, WA USA.
[Asuncion, Hazeline U.] Univ Calif Irvine, Ctr Comp Games & Virtual Worlds, Irvine, CA USA.
[Asuncion, Hazeline U.] Univ So Calif, Los Angeles, CA 90089 USA.
RP Alspaugh, TA (reprint author), Univ Calif Irvine, Inst Software Res, Irvine, CA 92717 USA.
NR 38
TC 0
Z9 0
U1 0
U2 0
PU EDWARD ELGAR PUBLISHING LTD
PI CHELTENHAM
PA GLENSANDA HOUSE, MONTPELLIER PARADE, CHELTENHAM GL50 1UA, GLOS, ENGLAND
BN 978-1-78195-563-5; 978-1-78195-562-8
PY 2013
BP 103
EP 120
D2 10.4337/9781781955635
PG 18
WC Business; Management
SC Business & Economics
GA BA7BN
UT WOS:000337358000008
ER
PT S
AU Pomfret, MB
Steinhurst, DA
Owrutsky, JC
AF Pomfret, Michael B.
Steinhurst, Daniel A.
Owrutsky, Jeffrey C.
BE Kawada, T
Singhal, SC
TI Methanol as an Oxygenated SOFC Fuel: An in situ Optical Analysis of the
Fuel Utilization Chemical Mechanism
SO SOLID OXIDE FUEL CELLS 13 (SOFC-XIII)
SE ECS Transactions
LA English
DT Proceedings Paper
CT 13th International Symposium on Solid Oxide Fuel Cells (SOFC-XIII)
CY OCT 06-11, 2013
CL Okinawa, JAPAN
SP Solid Oxide Fuel Cells Soc Japan, Electrochem Soc, High Temperature Mat, Battery & Energy Technol Div, Electrochem Soc, Dokiya Memorial Fund, Okinawa Convent & Visitors Bur, Commemorat Org Japan World Exposit 70, Kajima Fdn, Tokuyama Sci Fdn, Suzuki Fdn, Nippon Sheet Glass Fdn Mat Sci & Engn
ID DIRECT-ALCOHOL; CELLS; ETHANOL; OXIDATION; ADSORPTION; EMISSION;
SURFACES; PROPANE; GAS; CO2
AB Methanol utilization in solid oxide fuel cells (SOFCs) is studied with Fourier-transform IR emission spectroscopy and near-IR thermal imaging and the results are compared to the methane case. Adsorbed CO2 is identified on the anode surface of the SOFCs with both fuels. The stronger surface CO2 IR signal with methanol indicates more complete fuel oxidation. Methanol pyrolyzes to CO and H-2, resulting in less carbon deposition than methane. The current dependence of surface and gas-phase species show methanol pyrolysis is more efficient at higher temperatures. These results provide clear mechanistic insight into fuel breakdown and oxidation in SOFCs.
C1 [Pomfret, Michael B.; Owrutsky, Jeffrey C.] US Naval Res Lab, Div Chem, 4555 Overlook Ave SW, Washington, DC 20375 USA.
[Steinhurst, Daniel A.] Nova Res, Alexandria, VA 22308 USA.
RP Pomfret, MB (reprint author), US Naval Res Lab, Div Chem, 4555 Overlook Ave SW, Washington, DC 20375 USA.
FU Office of Naval Research
FX Support for this work was provided by the Office of Naval Research. The
authors acknowledge David A. Kidwell at NRL for help with early
development of this project, Robert A. Walker and John D. Kirtley at
Montana State University, and Bryan W.Eichhorn at the University of
Maryland College Park for helpful discussions.
NR 28
TC 3
Z9 3
U1 1
U2 6
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-60768-458-9
J9 ECS TRANSACTIONS
PY 2013
VL 57
IS 1
BP 2903
EP 2912
DI 10.1149/05701.2903ecst
PG 10
WC Electrochemistry; Energy & Fuels
SC Electrochemistry; Energy & Fuels
GA BA8WZ
UT WOS:000338989005041
ER
PT S
AU Jensen, KL
Petillo, JJ
Panagos, DN
AF Jensen, Kevin L.
Petillo, John J.
Panagos, Dimitrios N.
GP IEEE
TI Thermal Field Emission from a Log-Normal Distribution: Impact on Space
Charge and Emittance
SO 2013 26TH INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE (IVNC)
SE International Vacuum Nanoelectronics Conference
LA English
DT Proceedings Paper
CT 26th International Vacuum Nanoelectronics Conference (IVNC)
CY JUL 08-12, 2013
CL Roanoke, VA
AB Emission from an array of dissimilar field emitters are known to produce non-uniform patterns that affect space charge forces within the electron beam produced, with consequences on emittance and transit time effects. To model variation, a semi-analytical Point Charge Model (PCM) gives rapid and analytical representations of tip current, variation, and emission statistics to be used in the MICHELLE Particle-In-Cell (PIC) code. A General Thermal-Field (GTF) emission model accounts for warm and hot field emission sources. The consequences of non-uniform space charge on emittance shall be investigated.
C1 [Jensen, Kevin L.] Naval Res Lab, Vacuum Elect Branch, Code 6843, Washington, DC 20375 USA.
[Petillo, John J.; Panagos, Dimitrios N.] Sci Applicat Int Corp, Billerica, MA 01821 USA.
RP Jensen, KL (reprint author), Naval Res Lab, Vacuum Elect Branch, Code 6843, Washington, DC 20375 USA.
EM petilloj@saic.com
RI Jensen, Kevin/I-1269-2015
OI Jensen, Kevin/0000-0001-8644-1680
FU Joint Technology Office and Office of Naval Research; JJP and DNP; SAIC
IRD
FX KLJ gratefully acknowledges partial support from the Joint Technology
Office and Office of Naval Research. JJP and DNP gratefully acknowledge
support by SAIC IR&D.
NR 6
TC 0
Z9 0
U1 1
U2 1
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA
SN 2164-2370
J9 INT VACUUM NANOELECT
PY 2013
PG 2
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology
SC Engineering; Science & Technology - Other Topics
GA BA8GM
UT WOS:000338080600012
ER
PT S
AU Shaw, JL
Yater, JE
Pate, BB
Feygelson, TI
Hanna, JM
AF Shaw, J. L.
Yater, J. E.
Pate, B. B.
Feygelson, T. I.
Hanna, J. M.
GP IEEE
TI p-type Diamond Positive Surface Photo-voltage
SO 2013 26TH INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE (IVNC)
SE International Vacuum Nanoelectronics Conference
LA English
DT Proceedings Paper
CT 26th International Vacuum Nanoelectronics Conference (IVNC)
CY JUL 08-12, 2013
CL Roanoke, VA
DE Diamond; Negative Electron Affinity; Surface Photovoltage; Surface
Charge; Atomic Hydrogen
AB We report a large positive surface photo-voltage for lightly boron doped (p-type) diamond illuminated with 21.2 eV photons after exposing the surface to atomic hydrogen. We have recorded positive shifts well in excess of the band gap energy. Because the photo-voltage in most p-type materials is negative, we argue the observed positive shift indicates a lack of electron accumulation at the surface, as might be expected when the electron affinity is negative.
C1 [Shaw, J. L.; Yater, J. E.; Pate, B. B.; Feygelson, T. I.] Naval Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA.
[Hanna, J. M.] Beam Wave Res, Silver Spring, MD USA.
RP Shaw, JL (reprint author), Naval Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA.
RI Pate, Bradford/B-4752-2010
OI Pate, Bradford/0000-0002-3288-2947
NR 2
TC 0
Z9 0
U1 0
U2 2
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA
SN 2164-2370
J9 INT VACUUM NANOELECT
PY 2013
PG 2
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology
SC Engineering; Science & Technology - Other Topics
GA BA8GM
UT WOS:000338080600047
ER
PT S
AU Yater, JE
Shaw, JL
Jensen, KL
Wood, F
Pate, BB
Feygelson, T
AF Yater, Joan E.
Shaw, Jonathan L.
Jensen, Kevin L.
Wood, Frank
Pate, Bradford B.
Feygelson, Tatyana
GP IEEE
TI Sub-gap Photo-enhanced Secondary Electron Emission from Single-crystal
CVD Diamond
SO 2013 26TH INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE (IVNC)
SE International Vacuum Nanoelectronics Conference
LA English
DT Proceedings Paper
CT 26th International Vacuum Nanoelectronics Conference (IVNC)
CY JUL 08-12, 2013
CL Roanoke, VA
DE secondary emission; diamond; negative electron affinity; band bending;
photo-enhancement
AB Secondary-electron-emission current measured from high-purity, single-crystal CVD diamond is found to increase when 3.1-eV photons are incident on the hydrogenated surface. Energy spectra indicate that the sub-gap illumination causes the band levels to shift in the bulk, thereby reducing the upwards band bending at the pinned surface.
C1 [Yater, Joan E.; Shaw, Jonathan L.; Jensen, Kevin L.; Wood, Frank] Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
[Pate, Bradford B.; Feygelson, Tatyana] Naval Res Lab, Div Chem, Washington, DC USA.
RP Yater, JE (reprint author), Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
EM joan.yater@nrl.navy.mil
RI Jensen, Kevin/I-1269-2015; Pate, Bradford/B-4752-2010
OI Jensen, Kevin/0000-0001-8644-1680; Pate, Bradford/0000-0002-3288-2947
NR 5
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 90720-1264 USA
SN 2164-2370
J9 INT VACUUM NANOELECT
PY 2013
PG 2
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology
SC Engineering; Science & Technology - Other Topics
GA BA8GM
UT WOS:000338080600050
ER
PT S
AU Kota, N
Qidwai, SM
Lewis, AC
DeGiorgi, VG
AF Kota, N.
Qidwai, S. M.
Lewis, A. C.
DeGiorgi, V. G.
BE UrquidiMacdonald, M
Taylor, CD
Haruna, T
TI Microstructure-Based Numerical Modeling of Pitting Corrosion in 316
Stainless Steel
SO CORROSION, PASSIVITY, AND ENERGY: A SYMPOSIUM IN HONOR OF DIGBY D.
MACDONALD
SE ECS Transactions
LA English
DT Proceedings Paper
CT ECS 3D Symposium on Corrosion, Passivity, and Energy - In Honor of Digby
D. Macdonald
CY OCT 07-12, 2012
CL Honolulu, HI
SP ECS, Corros Div
ID CRYSTALLOGRAPHIC ORIENTATION; LOCALIZED CORROSION; SINGLE-CRYSTALS;
BEHAVIOR; ALUMINUM; DISSOLUTION; RESISTANCE; PITS; CREVICE; ALLOYS
AB Pitting involves localized corrosion of metals that can result in catastrophic events through crack initiation and failure. Beside the magnitude and mode of loading, the transition from pit to crack is also influenced by the pit shape, which in turn is affected by the microstructure of the corroding material. Thus, predicting the influence of microstructure on pit shape can assist in developing microstructures more resistant to stress corrosion cracking. This work presents numerical modeling of the stable pit growth based on direct incorporation of the actual microstructure in simulations. While many microstructural attributes can contribute towards corrosion, the current work focuses on the effects of the crystallographic orientation of the grains on pit growth through variation in corrosion potential with orientation. Two-dimensional simulation results show the strong influence of the crystallographic orientation on pit shapes and growth under the assumed 5% and 10% variation in corrosion potential, delineating the critical place of crystallographic orientation in pit growth to failure.
C1 [Kota, N.] Sci Applicat Int Corp, Arlington, VA 22202 USA.
[Qidwai, S. M.; Lewis, A. C.; DeGiorgi, V. G.] US Navy, Res Lab, Washington, DC 20375 USA.
RP Kota, N (reprint author), Sci Applicat Int Corp, Arlington, VA 22202 USA.
NR 43
TC 3
Z9 3
U1 1
U2 6
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-60768-419-0
J9 ECS TRANSACTIONS
PY 2013
VL 50
IS 31
BP 155
EP 164
DI 10.1149/05031.0155ecst
PG 10
WC Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary
SC Electrochemistry; Energy & Fuels; Materials Science
GA BA8FF
UT WOS:000338035300014
ER
PT S
AU Williams, K
Bayles, R
Natishan, P
Macdonald, DD
AF Williams, K.
Bayles, R.
Natishan, P.
Macdonald, D. D.
BE UrquidiMacdonald, M
Taylor, CD
Haruna, T
TI Mechanistic Evaluation of SCC in Sensitized and Unsensitized Specimens
of AA5083 Using Localized Probing Techniques
SO CORROSION, PASSIVITY, AND ENERGY: A SYMPOSIUM IN HONOR OF DIGBY D.
MACDONALD
SE ECS Transactions
LA English
DT Proceedings Paper
CT ECS 3D Symposium on Corrosion, Passivity, and Energy - In Honor of Digby
D. Macdonald
CY OCT 07-12, 2012
CL Honolulu, HI
SP ECS, Corros Div
ID STRESS-CORROSION CRACKING; THIOSULFATE SOLUTION; 304-STAINLESS-STEEL;
FATE
AB When as-received or sensitized AA5083 are immersed in an electrolyte, a growing crack creates a galvanic couple with the external surfaces according to the differential aeration hypothesis. Monitoring the resulting "coupling current" yields information about the mechanisms of crack advance. The purpose of this study is to determine if the scanning vibrating electrode technique (SVET) can be used to monitor the coupling current flowing through the solution from the crack to the external surfaces. If successful, this method, which maps potential as a function of probe position via a scanning vibrating probe (SVP), can be used to visualize and quantify the coupling current emanating from a growing stress corrosion crack in sensitized and unsensitized aluminum alloy samples to yield more localized information about the crack growth process. Preliminary feasibility studies were performed to map the current/potential in larger galvanic couples designed to simulate Cu-rich intermetallics dispersed in an aluminum matrix (as in the Cu-rich particles in AA2024 and Mg-rich intermetallics in AA5083). A fracture mechanics apparatus, designed to apply a known stress intensity, was employed to reveal the onset of subcritical crack growth. The final goal is to combine the typical fracture mechanics testing with the SVET and acoustic emissions. We report on the progress that has been made in designing a customized four-point bend, fracture mechanics device that allows for simultaneous loading and electrochemical mapping. Future work will report data gathered from in-situ electrochemical and acoustic emissions testing on pre-cracked AA5083 specimens.
C1 [Williams, K.; Bayles, R.; Natishan, P.] Naval Res Lab, Ctr Corros Sci & Engn, Washington, DC 20038 USA.
[Williams, K.; Macdonald, D. D.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
[Macdonald, D. D.] King Fahd Univ Petr & Minerals, Ctr Res Excellence Corros, Dhahran, Saudi Arabia.
RP Williams, K (reprint author), Naval Res Lab, Ctr Corros Sci & Engn, Washington, DC 20038 USA.
EM krystaufeux.williams@nrl.navy.mil
FU NRL; NRL SCEP
FX The author would like to acknowledge NRL and the NRL SCEP program for
financial support. Also, Dr. Ronald Holtz is acknowledged for technical
assistance.
NR 13
TC 0
Z9 0
U1 0
U2 2
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-60768-419-0
J9 ECS TRANSACTIONS
PY 2013
VL 50
IS 31
BP 449
EP 455
DI 10.1149/05031.0449ecst
PG 7
WC Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary
SC Electrochemistry; Energy & Fuels; Materials Science
GA BA8FF
UT WOS:000338035300036
ER
PT S
AU Huba, JD
Khazanov, GV
Schunk, RW
AF Huba, J. D.
Khazanov, G. V.
Schunk, R. W.
BE Huba, J
Schunk, R
Khazanov, G
TI Modeling the Ionosphere-Thermosphere System Introduction
SO MODELING THE IONOSPHERE-THERMOSPHERE SYSTEM
SE Geophysical Monograph Series
LA English
DT Proceedings Paper
CT AGU Chapman Conference on Modeling the Ionosphere/Thermosphere System
CY MAY 06-12, 2011
CL Charleston, SC
SP AGU
C1 [Huba, J. D.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Huba, JD (reprint author), Naval Res Lab, Div Plasma Phys, Code 6790, Washington, DC 20375 USA.
EM huba@ppd.nrl.navy.mil
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0065-8448
BN 978-1-118-70441-7; 978-0-87590-490-0
J9 GEOPHYS MONOGR SER
PY 2013
VL 201
BP 1
EP 1
DI 10.1029/2013GM001453
PG 1
WC Geochemistry & Geophysics; Mathematics, Interdisciplinary Applications;
Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Mathematics; Meteorology & Atmospheric
Sciences
GA BA8FV
UT WOS:000338043600001
ER
PT S
AU Huba, JD
Joyce, G
AF Huba, J. D.
Joyce, G.
BE Huba, J
Schunk, R
Khazanov, G
TI Numerical Methods in Modeling the Ionosphere
SO MODELING THE IONOSPHERE-THERMOSPHERE SYSTEM
SE Geophysical Monograph Book Series
LA English
DT Proceedings Paper
CT AGU Chapman Conference on Modeling the Ionosphere/Thermosphere System
CY MAY 06-12, 2011
CL Charleston, SC
SP AGU
AB A brief review of numerical methods used in ionospheric modeling is presented. We focus on two numerical schemes to solve the continuity and velocity equations of the ions along the geomagnetic field: the fully implicit method and the semiimplicit method. We describe each method in detail highlighting the advantages and disadvantages of each method. We compare and contrast simulation results for a simplified problem to illustrate their attributes. We also discuss two gridding systems used to model crossfield transport: Lagrangian (moving grid) and Eulerian (fixed grid).
C1 [Huba, J. D.] Naval Res Lab, Div Plasma Phys, Code 6790, Washington, DC 20375 USA.
[Joyce, G.] Icarus Res Inc, Bethesda, MD USA.
RP Huba, JD (reprint author), Naval Res Lab, Div Plasma Phys, Code 6790, Washington, DC 20375 USA.
EM huba@ppd.nrl.navy.mil
NR 9
TC 1
Z9 1
U1 1
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0065-8448
BN 978-1-118-70441-7; 978-0-87590-490-0
J9 GEOPHYS MONOGR SER
PY 2013
VL 201
BP 49
EP 55
DI 10.1029/2012GM001306
PG 7
WC Geochemistry & Geophysics; Mathematics, Interdisciplinary Applications;
Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Mathematics; Meteorology & Atmospheric
Sciences
GA BA8FV
UT WOS:000338043600006
ER
PT S
AU McDonald, SE
Lean, JL
Huba, JD
Joyce, G
Emmert, JT
Drob, DP
AF McDonald, S. E.
Lean, J. L.
Huba, J. D.
Joyce, G.
Emmert, J. T.
Drob, D. P.
BE Huba, J
Schunk, R
Khazanov, G
TI Long-Term Simulations of the Ionosphere Using SAMI3
SO MODELING THE IONOSPHERE-THERMOSPHERE SYSTEM
SE Geophysical Monograph Book Series
LA English
DT Proceedings Paper
CT AGU Chapman Conference on Modeling the Ionosphere/Thermosphere System
CY MAY 06-12, 2011
CL Charleston, SC
SP AGU
ID EQUATORIAL IONOSPHERE; MODEL; ATMOSPHERE; DRIFTS
AB The Naval Research Laboratory (NRL) is conducting an interdisciplinary physics-based space weather model development and validation program called the Integrated Sun-Earth System for the Operational Environment (ISES-OE). The goal of ISES-OE is to improve the quantitative understanding of the space environment, which can disrupt or degrade operational communications and navigation systems and, ultimately, to provide the ability to forecast space weather on multiple time scale, from hours to the 11 year solar cycle. The core ISES-OE model is Another Model of the Ionosphere (SAMI3), NRL's state-of-the-art ionosphere model. As a part of this program, a comprehensive, systematic validation of SAMI3's current capability was conducted to specify the midlatitude to low-latitude ionosphere and its response to heliospheric forcing and thermospheric oscillations. An ensemble of simulation runs is generated using SAMI3 for the solar and geomagnetic conditions during the Whole Heliosphere Interval 2008. The simulations are driven with a solar irradiance model based on Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED)/Solar EUV Experiment measurements and with daily Ap and F10.7 indices. Thermospheric conditions are specified with NRL's empirical models of the neutral composition and temperature (NRLMSISE-00) and the neutral wind (HWM07). Various input parameters are selected or held constant to quantify their effects on the ionosphere. Additionally, simulations are performed using both empirical electric fields and self-consistently calculated fields. Simulation results are compared with ground-and space-based observations, including ionosondes and GPS-derived global total electron content maps; we illustrate how we are using such comparisons for model validation. Initial results of a multiyear run of SAMI3 over the descending phase of Solar Cycle 23 (2002-2008) are also shown.
C1 [McDonald, S. E.; Lean, J. L.; Emmert, J. T.; Drob, D. P.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Huba, J. D.] Naval Res Lab, Plasma Phys Div, Columbia, MD USA.
[Joyce, G.] Icarus Res Inc, Bethesda, MD USA.
RP McDonald, SE (reprint author), Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
EM sarah.mcdonald@nrl.navy.mil
OI Drob, Douglas/0000-0002-2045-7740
FU Office of Naval Research
FX This work is supported by the Office of Naval Research.
NR 35
TC 1
Z9 1
U1 1
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0065-8448
BN 978-1-118-70441-7; 978-0-87590-490-0
J9 GEOPHYS MONOGR SER
PY 2013
VL 201
BP 119
EP 131
DI 10.1029/2012GM001301
PG 13
WC Geochemistry & Geophysics; Mathematics, Interdisciplinary Applications;
Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Mathematics; Meteorology & Atmospheric
Sciences
GA BA8FV
UT WOS:000338043600012
ER
PT S
AU Fang, TW
Anderson, D
Fuller-Rowell, T
Akmaev, R
Codrescu, M
Millward, G
Sojka, J
Scherliess, L
Eccles, V
Retterer, J
Huba, J
Joyce, G
Richmond, A
Maute, A
Crowley, G
Ridley, A
Vichare, G
AF Fang, Tzu-Wei
Anderson, David
Fuller-Rowell, Tim
Akmaev, Rashid
Codrescu, Mihail
Millward, George
Sojka, Jan
Scherliess, Ludger
Eccles, Vince
Retterer, John
Huba, Joe
Joyce, Glenn
Richmond, Art
Maute, Astrid
Crowley, Geoff
Ridley, Aaron
Vichare, Geeta
BE Huba, J
Schunk, R
Khazanov, G
TI Comparative Studies of Theoretical Models in the Equatorial Ionosphere
SO MODELING THE IONOSPHERE-THERMOSPHERE SYSTEM
SE Geophysical Monograph Book Series
LA English
DT Proceedings Paper
CT AGU Chapman Conference on Modeling the Ionosphere/Thermosphere System
CY MAY 06-12, 2011
CL Charleston, SC
SP AGU
ID GENERAL-CIRCULATION MODEL; COUPLED ELECTRODYNAMICS; THERMOSPHERE MODEL;
PARAMETERS; ATMOSPHERE; MINIMUM; DRIFTS
AB Two sets of ionospheric models including six non-self-consistent models and five self-consistent models were compared with ionosonde data and the International Reference Ionosphere (IRI). The comparisons were focused on the low latitudes in March equinox under quiet geomagnetic activity and moderate solar activity (F-10.7 = 120). We compared the NmF2 and h(m)F(2) from all theoretical models, the IRI, and observations at four different LTs at equatorial region in the American sector (75 W). For the non-self-consistent model, we further compared simulation results at Asian sector (120 degrees E). To identify the causes of differences in the non-self-consistent models, runs without neutral wind and/or electric field were conducted at the Asian sector. Results show that the non-self-consistent models are in good agreement with each other and with the IRI especially in the daytime. Large discrepancies are shown in the self-consistent model results, which imply very different electric fields and neutral atmosphere in these models. Also, the daytime NmF2 values at the crests of the equatorial anomaly calculated by the self-consistent models are substantially lower than those in the non-self-consistent models. This paper reviews the current status of each theoretical model and examines their capability in simulating the quiet time equatorial ionosphere.
C1 [Fang, Tzu-Wei; Anderson, David; Fuller-Rowell, Tim; Millward, George] Univ Colorado, CIRES, Boulder, CO 80309 USA.
[Akmaev, Rashid; Codrescu, Mihail] NOAA SpaceWeather Predict Ctr, Boulder, CO 80309 USA.
[Sojka, Jan; Scherliess, Ludger] Utah State Univ, Ctr Atmospher & Space Sci, Logan, UT USA.
[Eccles, Vince] Space Environm Corp, Provo, UT USA.
[Retterer, John] Boston Coll, Inst Sci Res, Chestnut Hill, MA 02167 USA.
[Huba, Joe] Naval Res Lab, Div Plasma Phys, Washington, DC USA.
[Joyce, Glenn] Icarus Res Inc, Bethesda, MD USA.
[Richmond, Art; Maute, Astrid] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO USA.
[Crowley, Geoff] Atmospher & Space Technol Res Associates, San Antonio, TX USA.
[Ridley, Aaron] Univ Michigan, Ctr Space Environm Modeling, Ann Arbor, MI USA.
[Vichare, Geeta] Indian Inst Geomagnetism, Bombay, Maharashtra, India.
RP Fang, TW (reprint author), Univ Colorado, CIRES, Boulder, CO 80309 USA.
EM tzu-wei.fang@noaa.gov
RI Ridley, Aaron/F-3943-2011;
OI Richmond, Arthur/0000-0002-6708-1023; Ridley, Aaron/0000-0001-6933-8534;
Scherliess, Ludger/0000-0002-7388-5255
FU NSF [ATM-0836386]; AFOSR [FA9550-09-0408]; NRL 6.1 Base Funds; NASA
[NNX09AN57G, NNX09AJ59G]; National Science Foundation
FX The authors wish to thank the National Science Foundation in supporting
the Coupling Energetics and Dynamics of Atmospheric RegionsWorkshop. TWF
was supported, in part, by NSF grant ATM-0836386. DNAwas supported, in
part, by AFOSR grant FA9550-09-0408. JDH was supported by NRL 6.1 Base
Funds and NASA. ADR and AM were supported, in part, by NASA grant
NNX09AN57G. The National Center for Atmospheric Research is sponsored by
the National Science Foundation. Research at UM was supported by NASA
grant NNX09AJ59G.
NR 32
TC 2
Z9 2
U1 0
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0065-8448
BN 978-1-118-70441-7; 978-0-87590-490-0
J9 GEOPHYS MONOGR SER
PY 2013
VL 201
BP 133
EP 144
DI 10.1029/2012GM001280
PG 12
WC Geochemistry & Geophysics; Mathematics, Interdisciplinary Applications;
Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Mathematics; Meteorology & Atmospheric
Sciences
GA BA8FV
UT WOS:000338043600013
ER
PT S
AU Siskind, DE
Drob, DP
AF Siskind, David E.
Drob, Douglas P.
BE Huba, J
Schunk, R
Khazanov, G
TI Use of NOGAPS-ALPHA as a Bottom Boundary for the NCAR/TIEGCM
SO MODELING THE IONOSPHERE-THERMOSPHERE SYSTEM
SE Geophysical Monograph Book Series
LA English
DT Proceedings Paper
CT AGU Chapman Conference on Modeling the Ionosphere/Thermosphere System
CY MAY 06-12, 2011
CL Charleston, SC
SP AGU
ID 4-DIMENSIONAL DATA ASSIMILATION; GENERAL-CIRCULATION MODEL;
ELECTRODYNAMICS; ATMOSPHERE
AB We present preliminary results from the National Center for Atmospheric Research thermosphere ionosphere electrodynamics general circulation model (TIEGCM) using a bottom boundary from the Navy Operational Global Atmospheric Prediction System-Advanced Level Physics High Altitude (NOGAPS-ALPHA) model. NOGAPS-ALPHA consists of a forecast module and a data assimilation (DA) system. We use the 6 hourly cycled DA system to initialize a series of forecasts, which are output every hour. The use of hourly output allows the resolution of higher-order tidal modes such as the terdiurnal tide. Results are shown for January 2009. All three migrating tides (diurnal wave 1, semidiurnal wave 2, terdiurnal wave 3) and the eastward traveling nonmigrating diurnal wave 3 tide are present. Results are compared with Sounding of the Atmosphere with Broadband Emission Radiometry (SABER) observations and previously published model results. We evaluate the behavior of these tidal components at the interface between the two models and suggest a method to reduce the discontinuities. Finally, and consistent with previous models, we find a marked decrease in the semidiurnal tide after the dramatic sudden stratospheric warming in late January; however, this does not appear to be offset by a concomitant increase in the migrating terdiurnal component that others have reported.
C1 [Siskind, David E.; Drob, Douglas P.] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA.
RP Siskind, DE (reprint author), Naval Res Lab, Div Space Sci, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM david.siskind@nrl.navy.mil
OI Drob, Douglas/0000-0002-2045-7740
NR 42
TC 0
Z9 0
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0065-8448
BN 978-1-118-70441-7; 978-0-87590-490-0
J9 GEOPHYS MONOGR SER
PY 2013
VL 201
BP 171
EP 180
DI 10.1029/2012GM001336
PG 10
WC Geochemistry & Geophysics; Mathematics, Interdisciplinary Applications;
Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Mathematics; Meteorology & Atmospheric
Sciences
GA BA8FV
UT WOS:000338043600016
ER
PT S
AU Krall, J
Huba, JD
AF Krall, J.
Huba, J. D.
BE Huba, J
Schunk, R
Khazanov, G
TI Density and Temperature Structure of Equatorial Spread F Plumes
SO MODELING THE IONOSPHERE-THERMOSPHERE SYSTEM
SE Geophysical Monograph Book Series
LA English
DT Proceedings Paper
CT AGU Chapman Conference on Modeling the Ionosphere/Thermosphere System
CY MAY 06-12, 2011
CL Charleston, SC
SP AGU
ID LOW-LATITUDE IONOSPHERE; HINOTORI SATELLITE; IMPEDANCE PROBE; PLASMA
BUBBLES; REGION; MODEL; IRREGULARITIES; BOARD
AB Simulations of simple equatorial spread F (ESF) plumes using the National Research Laboratory SAMI3/ESF 3-D simulation code are analyzed in terms of the momentum and thermal equations governing the ions and electrons. The resulting 3-D plume structure includes regions of enhanced density and temperature. These have been shown to correspond to observed density and temperature features, such as plasma "blobs." We consider the evolution of a plume into a very slowly evolving "fossil plume" state and find that these temperature and density features may persist over time scales that are long compared to the growth time of the ESF plume.
C1 [Krall, J.; Huba, J. D.] Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
RP Krall, J (reprint author), Naval Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
EM jonathan.krall@nrl.navy.mil
NR 30
TC 0
Z9 0
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0065-8448
BN 978-1-118-70441-7; 978-0-87590-490-0
J9 GEOPHYS MONOGR SER
PY 2013
VL 201
BP 251
EP 258
DI 10.1029/2012GM001284
PG 8
WC Geochemistry & Geophysics; Mathematics, Interdisciplinary Applications;
Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Mathematics; Meteorology & Atmospheric
Sciences
GA BA8FV
UT WOS:000338043600021
ER
PT S
AU Heitmeyer, C
Pickett, M
Breslow, L
Aha, D
Trafton, JG
Leonard, E
AF Heitmeyer, Constance
Pickett, Marc
Breslow, Len
Aha, David
Trafton, J. Greg
Leonard, Elizabeth
GP IEEE
TI High Assurance Human-Centric Decision Systems
SO 2013 2ND INTERNATIONAL WORKSHOP ON REALIZING ARTIFICIAL INTELLIGENCE
SYNERGIES IN SOFTWARE ENGINEERING (RAISE)
SE International Workshop on Realizing Artificial Intelligence Synergies in
Software Engineering
LA English
DT Proceedings Paper
CT 2nd International Workshop on Realizing Artificial Intelligence
Synergies in Software Engineering (RAISE)
CY MAY 25-26, 2013
CL San Francisco, CA
SP NSF
AB Many future decision support systems will be human-centric, i.e., require substantial human oversight and control. Because these systems often provide critical services, high assurance will be needed that they satisfy their requirements. How to develop "high assurance human-centric decision systems" is unknown: while significant research has been conducted in areas such as agents, cognitive science, and formal methods, how to apply and integrate the design principles and disparate models in each area is unclear. This paper proposes a novel process for developing human-centric decision systems where AI (artificial intelligence) methods-namely, cognitive models to predict human behavior and agents to assist the human-are used to achieve adequate system performance, and software engineering methods, namely, formal modeling and analysis, to obtain high assurance. To support this process, the paper introduces a software engineering technique-formal model synthesis from scenarios-and two AI techniques-a model for predicting human overload and user model synthesis from participant studies data. To illustrate the process and techniques, the paper describes a decision system controlling unmanned air vehicles.
C1 [Heitmeyer, Constance; Leonard, Elizabeth] Naval Res Lab, Ctr High Assurance Comp Syst, Washington, DC 20375 USA.
[Pickett, Marc; Breslow, Len; Aha, David; Trafton, J. Greg] Naval Res Lab, Ctr Appl res Artific Intelligence, Washington, DC 20375 USA.
RP Heitmeyer, C (reprint author), Naval Res Lab, Ctr High Assurance Comp Syst, Washington, DC 20375 USA.
EM constance.heitmeyer@nrl.navy.mil; marc.pickett.ctr@nrl.navy.mil;
len.breslow@nrl.navy.mil; david.aha@nrl.navy.mil;
greg.trafton@nrl.navy.mil; elizabeth.leonard@nrl.navy.mil
OI Heitmeyer, Constance/0000-0001-7942-9309
NR 27
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2326-2370
BN 978-1-4673-6437-9
J9 INT WORK REAL ARTIF
PY 2013
BP 35
EP 41
PG 7
WC Computer Science, Artificial Intelligence; Computer Science, Software
Engineering; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BA7XZ
UT WOS:000337893700007
ER
PT S
AU Dono, TF
Chung, TH
AF Dono, Thomas F.
Chung, Timothy H.
GP IEEE
TI Optimized Transit Planning and Landing of Aerial Robotic Swarms
SO 2013 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA)
SE IEEE International Conference on Robotics and Automation ICRA
LA English
DT Proceedings Paper
CT IEEE International Conference on Robotics and Automation (ICRA)
CY MAY 06-10, 2013
CL Karlsruhe, GERMANY
SP IEEE
AB This research explores the efficient and safe landing and recovery of a swarm of unmanned aerial vehicles (UAVs). The presented work involves the use of an overarching (centralized) airspace optimization model, formulated analytically as a network-based model with side constraints describing a time-expanded network model of the terminal airspace in which the UAVs navigate to one or more (possibly moving) landing zones. This model generates optimal paths in a centralized manner such that the UAVs are properly sequenced into the landing areas. The network-based model is "grown" using agent-based simulation with simple flocking rules. Relevant measures of performance include, e. g., the total time necessary to land the swarm. Extensive simulation studies and sensitivity analyses are conducted to demonstrate the relative effectiveness of the proposed approaches.
C1 [Dono, Thomas F.] Marine Corps Warfighting Lab, Quantico, VA 22134 USA.
[Chung, Timothy H.] Naval Postgrad Sch, Syst Engn, Monterey, CA USA.
RP Dono, TF (reprint author), Marine Corps Warfighting Lab, Quantico, VA 22134 USA.
EM thomas.dono@usmc.mil; thchung@nps.edu
NR 17
TC 1
Z9 1
U1 1
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1050-4729
BN 978-1-4673-5641-1; 978-1-4673-5643-5
J9 IEEE INT CONF ROBOT
PY 2013
BP 1843
EP 1850
PG 8
WC Automation & Control Systems; Engineering, Electrical & Electronic;
Robotics
SC Automation & Control Systems; Engineering; Robotics
GA BA7KQ
UT WOS:000337617301126
ER
PT S
AU Stevens, T
Chung, TH
AF Stevens, Timothy
Chung, Timothy H.
GP IEEE
TI Autonomous Search and Counter-Targeting using Levy Search Models
SO 2013 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA)
SE IEEE International Conference on Robotics and Automation ICRA
LA English
DT Proceedings Paper
CT IEEE International Conference on Robotics and Automation (ICRA)
CY MAY 06-10, 2013
CL Karlsruhe, GERMANY
SP IEEE
AB In this study, we explore the use of nondeterministic search trajectories to accomplish a two-fold mission of mobile robot search for a stationary target while avoiding counter-targeting by the adversary throughout the operation. We analyze the characteristics associated with a Levy distribution of search leg lengths to generate appropriate randomized search trajectories. We discuss the alteration of the probability distribution of the Levy search as a result of the method utilized to best address the presence of the bounded search area and confine the searcher within its boundaries. Through regression analysis of simulation results, we determine expressions for the coverage ratio evolution of the modified Levy search strategy and the distribution on time to target detection T-D, from which we are able to calculate the expected time, E[T-D], to detect the target uniformly distributed within the search area. We assert assumptions regarding the adversary's detection and tracking abilities to estimate the expected time, E[T-C], required for it to counter target the searcher. From these two expected times, we construct a novel probabilistic mission performance metric that measures the likelihood that the searcher will detect the target before it is counter targeted itself.
C1 [Stevens, Timothy] Naval Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.
[Chung, Timothy H.] Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA.
RP Stevens, T (reprint author), Naval Postgrad Sch, Dept Operat Res, Monterey, CA 93943 USA.
EM tssteven@nps.edu; thchung@nps.edu
NR 14
TC 2
Z9 2
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1050-4729
BN 978-1-4673-5641-1; 978-1-4673-5643-5
J9 IEEE INT CONF ROBOT
PY 2013
BP 3953
EP 3960
PG 8
WC Automation & Control Systems; Engineering, Electrical & Electronic;
Robotics
SC Automation & Control Systems; Engineering; Robotics
GA BA7KQ
UT WOS:000337617303143
ER
PT J
AU McCarroll, RJ
Brander, RW
MacMahan, JH
Turner, IL
Reniers, AJHM
Brown, JA
Bradstreet, A
AF McCarroll, R. Jak
Brander, Rob W.
MacMahan, Jamie H.
Turner, Ian L.
Reniers, Ad J. H. M.
Brown, Jenna A.
Bradstreet, Anthony
TI Assessing the effectiveness of rip current swimmer escape strategies,
Shelly Beach, NSW, Australia
SO JOURNAL OF COASTAL RESEARCH
LA English
DT Article; Proceedings Paper
CT 12th International Coastal Symposium (ICS)
CY APR 09-12, 2013
CL Plymouth Univ, Sch Marine Sci & Engn, Coastal Proc Res Grp, Plymouth,
ENGLAND
HO Plymouth Univ, Sch Marine Sci & Engn, Coastal Proc Res Grp
DE Lagrangian flow; drifters; surf zone circulation; beach safety; rip
escape strategy; beach hazard
ID SYSTEM
AB Rip flow dynamics have important implications for swimmer escape strategies, with recent field studies indicating flow is often contained within the surf zone, re-circulating onto shallow bars. Combining physical measurements in a variety of conditions with various escape strategies allows insights into the safest response by individuals caught in a rip. A three day experiment was conducted at Shelly Beach, NSW in December, 2011. Lagrangian measurements of rip flow using GPS drifters were obtained. Participants with attached GPS were deployed in groups of 3 to 5 in rip currents to simulate various escape actions such as floating with the rip current, and swimming in a parallel direction at varying distances from shore. Day 1 and 2 measurements captured an open beach rip current and an adjacent topographic rip current in moderate energy conditions. Day 3 measurements were obtained on an open beach rip current at a more exposed section of the beach under higher energy conditions. Results were analysed by duration and assessed as being either (i) positive outcome (high chance of safe exit); or (ii) negative outcome (greater potential for hazard). Mean durations were Float (4 min), and Swim (2 min). Of the eight escape scenarios tested, half had potential negative outcomes, including 2 of 3 Float options and 2 of 5 Swim options. Negative outcomes for Floats were related to surf zone exits, and multiple circulations. Negative outcomes for Swims related to swimming against longshore directed circulation. Neither strategy was clearly more likely to result in a successful outcome across all scenarios. Further investigations are currently being conducted in a greater range of hydrodynamic and morphological conditions.
C1 [McCarroll, R. Jak; Brander, Rob W.] Univ New S Wales, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia.
[MacMahan, Jamie H.; Brown, Jenna A.] Naval Postgrad Sch, Dept Oceanog, Monterey, CA USA.
[Turner, Ian L.] Univ New S Wales, Sch Civil & Environm Engn, Water Res Lab, Sydney, NSW 2052, Australia.
[Reniers, Ad J. H. M.] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA.
[Bradstreet, Anthony] Surf Life Saving Australia SLS, Rosebery, NSW, Australia.
RP McCarroll, RJ (reprint author), Univ New S Wales, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia.
EM r.j.mccarroll@unsw.edu.au; rbrander@unsw.edu.au; jhmacmah@nps.edu;
jenna.brown@gmail.com; areniers@rsmas.miami.edu; ian.turner@unsw.edu.au;
abradstreet@slsa.asn.au
OI Turner, Ian/0000-0001-9884-6917
NR 15
TC 2
Z9 2
U1 0
U2 4
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.
PY 2013
SI 65
BP 784
EP 789
DI 10.2112/SI65-133.1
PN 1
PG 6
WC Environmental Sciences; Geography, Physical; Geosciences,
Multidisciplinary
SC Environmental Sciences & Ecology; Physical Geography; Geology
GA AJ8ZB
UT WOS:000337995500134
ER
PT J
AU Calantoni, J
Landry, BJ
Penko, AM
AF Calantoni, Joseph
Landry, Blake J.
Penko, Allison M.
TI Laboratory observations of sand ripple evolution using bimodal grain
size distributions under asymmetric oscillatory flows
SO JOURNAL OF COASTAL RESEARCH
LA English
DT Article; Proceedings Paper
CT 12th International Coastal Symposium (ICS)
CY APR 08-12, 2013
CL Plymouth, ENGLAND
DE Vortex ripples; ripple migration; oscillatory flow tunnel; video
observations
ID MIGRATION CHARACTERISTICS; GEOMETRY; WAVES; BEDFORMS; CURRENTS; BED
AB The heterogeneity of sand beds has been suggested to significantly impact the resulting sand ripple morphodynamics. However, the majority of previous experiments for sand ripple morphodynamics were conducted using only unimodal grain size distributions. Here we performed a series of ripple growth and transition experiments in a small oscillatory flow tunnel in the Sediment Dynamics Laboratory at the U.S. Naval Research Laboratory. Sand beds were constructed from mixtures of two unimodal sands median grain sizes of 0.30 mm (blue) and 0.70 mm (white), respectively. Experiments were performed with compositions of bimodal mixtures with percent by mass of 10/90, 25/75, 50/50, 75/25, 90/10. Additionally, similar experiments were performed for each of the unimodal cases (i.e., 100/0, 0/100). For each experiment, starting from a planar bed, three different flow forcing conditions were applied in sequential blocks (with minimum of one-hour duration) until the ripples appeared to be uniform and in equilibrium. We analyzed ripple characteristics such as migration rate, wavelength, height, and steepness as a function of the mobility number. Over a range of nearly identical mobility numbers, we observed opposing trends with migration rates increasing in one block forcing and decreasing in another, where the two blocks were comprised of different combinations of the semi-excursion amplitude and oscillatory frequency. The results suggested that the commonly used mobility number might not be appropriate to characterize ripple migration rates, especially for sediment beds composed of bimodal size mixtures. Overall, wavelength, height, and steepness are consistent with empirical ripple predictors. However, observed subtleties existed among the different forcing blocks across the same range of grain size distributions.
C1 [Calantoni, Joseph; Penko, Allison M.] Naval Res Lab, Marine Geosci Div, Stennis Space Ctr, MS 39529 USA.
[Landry, Blake J.] Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61801 USA.
RP Calantoni, J (reprint author), Naval Res Lab, Marine Geosci Div, Stennis Space Ctr, MS 39529 USA.
EM code7434@nrlssc.navy.mil; blandry@alum.mit.edu
FU Office of Naval Research; Jerome and Isabella Karle Distinguished
Scholar Fellowship Program at the Naval Research Laboratory; Naval
Research Enterprise Internship Program at the Naval Research Laboratory
FX JC was supported under base funding to the Naval Research Laboratory
from the Office of Naval Research. AMP was supported by the Jerome and
Isabella Karle Distinguished Scholar Fellowship Program at the Naval
Research Laboratory. The experiments were performed while BJL was
supported under the Naval Research Enterprise Internship Program at the
Naval Research Laboratory.
NR 20
TC 3
Z9 3
U1 1
U2 5
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.
PY 2013
SI 65
BP 1497
EP 1502
DI 10.2112/SI65-253.1
PN 2
PG 6
WC Environmental Sciences; Geography, Physical; Geosciences,
Multidisciplinary
SC Environmental Sciences & Ecology; Physical Geography; Geology
GA AJ8ZC
UT WOS:000337995600071
ER
PT J
AU Hurni, MA
Kiriakidis, K
Nicholson, JW
AF Hurni, Michael A.
Kiriakidis, Kiriakos
Nicholson, John W.
GP ASME
TI PLANNING THE MINIMUM TIME COURSE FOR AUTONOMOUS UNDERWATER VEHICLE IN
UNCERTAIN CURRENT
SO ASME 2013 DYNAMIC SYSTEMS AND CONTROL CONFERENCE, VOL 2
LA English
DT Proceedings Paper
CT ASME Dynamic Systems and Control Conference (DSCC)
CY OCT 21-23, 2013
CL Palo Alto, CA
SP ASME, Dynam Syst & Control Div
AB The authors developed an approach to a "best" time path for Autonomous Underwater Vehicles sailing uncertain currents. The numerical optimization tool DIDO is used to compute minimum time paths for a sample of currents between ebb and flow. A simulated meta-experiment is performed where the vehicle traverses the resulting paths under different current strengths per run. The fastest elapsed time emerges from a payoff table.
C1 [Hurni, Michael A.; Kiriakidis, Kiriakos; Nicholson, John W.] US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA.
RP Hurni, MA (reprint author), US Naval Acad, Dept Weap & Syst Engn, Annapolis, MD 21402 USA.
EM kiriakid@usna.edu
NR 9
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-5613-0
PY 2013
AR V002T32A004
DI 10.1115/DSCC2013-3849
PG 4
WC Automation & Control Systems; Engineering, Mechanical
SC Automation & Control Systems; Engineering
GA BA5WL
UT WOS:000337043200087
ER
PT J
AU Jha, DK
Wettergren, TA
Ray, A
AF Jha, Devesh K.
Wettergren, Thomas A.
Ray, Asok
GP ASME
TI ADAPTIVE OPTIMAL POWER TRADE-OFF IN UNDERWATER SENSOR NETWORKS
SO ASME 2013 DYNAMIC SYSTEMS AND CONTROL CONFERENCE, VOL 2
LA English
DT Proceedings Paper
CT ASME Dynamic Systems and Control Conference (DSCC)
CY OCT 21-23, 2013
CL Palo Alto, CA
SP ASME, Dynam Syst & Control Div
ID LIFETIME
AB In general, sensor networks have two competing objectives: (i) maximization of network performance with respect to the probability of successful search with a specified false alarm rate for a given coverage area, and (ii) maximization of the network's operational life. In this context, battery-powered sensing systems are operable as long as they can communicate sensed data to the processing nodes. Since both operations of sensing and communication consume energy, judicious use of these operations could effectively improve the sensor network's lifetime. From these perspectives, the paper presents an adaptive energy management policy that will optimally allocate the available energy between sensing and communication operations at each node to maximize the network performance under specified constraints. With the assumption of fixed total energy for a sensor network operating over a time period, the problem is reduced to identification of a network topology that maximizes the probability of successful detection of targets over a surveillance region. In a two-stage optimization, a genetic algorithm-based meta-heuristic search is first used to efficiently explore the global design space, and then a local pattern search algorithm is used for convergence to an optimal solution. The results of performance evaluation are presented to validate the proposed concept.
C1 [Jha, Devesh K.; Ray, Asok] Penn State Univ, Dept Mech Engn, University Pk, PA 16802 USA.
[Wettergren, Thomas A.] Naval Undersea Warfare Ctr, Newport, RI USA.
RP Jha, DK (reprint author), Penn State Univ, Dept Mech Engn, University Pk, PA 16802 USA.
EM dkj5042@psu.edu; t.a.wettergren@ieee.org; axr2@psu.edu
OI Wettergren, Thomas/0000-0002-6623-8412
NR 20
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-5613-0
PY 2013
AR UNSP V002T32A001
DI 10.1115/DSCC2013-3717
PG 10
WC Automation & Control Systems; Engineering, Mechanical
SC Automation & Control Systems; Engineering
GA BA5WL
UT WOS:000337043200084
ER
PT J
AU Noble, SL
Esposito, JM
Case, J
AF Noble, Sarah L.
Esposito, Joel M.
Case, Jason
GP ASME
TI ACCOUNTING FOR PARAMETRIC MODEL UNCERTAINTY IN COLLISION AVOIDANCE FOR
UNMANNED VEHICLES USING SPARSE GRID INTERPOLATION
SO ASME 2013 DYNAMIC SYSTEMS AND CONTROL CONFERENCE, VOL 2
LA English
DT Proceedings Paper
CT ASME Dynamic Systems and Control Conference (DSCC)
CY OCT 21-23, 2013
CL Palo Alto, CA
SP ASME, Dynam Syst & Control Div
ID DARPA-URBAN-CHALLENGE; ENVIRONMENTS; ENTRY; PERCEPTION; NAVIGATION;
TERRAIN
AB In this paper we present an enhancement of model-based trajectory selection algorithms - a popular class of collision avoidance techniques for autonomous ground vehicles. Rather than dilate a set of individual candidate trajectories in an ad hoc way to account for uncertainty, we generate a set of trajectory clouds - sets of states that represent possible future poses over a product of intervals representing uncertainty in the model parameters, initial conditions and actuator commands. The clouds are generated using the sparse-grid interpolation method which is both error-controlled and computationally efficient. The approach is implemented on a differential drive vehicle.
C1 [Noble, Sarah L.; Esposito, Joel M.; Case, Jason] US Naval Acad, Annapolis, MD 21401 USA.
RP Noble, SL (reprint author), US Naval Acad, Annapolis, MD 21401 USA.
EM noble@usna.edu; esposito@usna.edu
NR 30
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC MECHANICAL ENGINEERS
PI NEW YORK
PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
BN 978-0-7918-5613-0
PY 2013
AR V002T30A004
DI 10.1115/DSCC2013-3885
PG 8
WC Automation & Control Systems; Engineering, Mechanical
SC Automation & Control Systems; Engineering
GA BA5WL
UT WOS:000337043200076
ER
PT B
AU Apte, UM
Nath, HK
AF Apte, Uday M.
Nath, Hiranya K.
BE Mangal, V
Karmarkar, U
TI US TRADE IN INFORMATION-INTENSIVE SERVICES
SO UCLA ANDERSON BUSINESS AND INFORMATION TECHNOLOGIES (BIT) PROJECT: A
GLOBAL STUDY OF BUSINESS PRACTICE (2012)
LA English
DT Article; Book Chapter
ID INTERNATIONAL-TRADE; INTERNET; DISAGGREGATION; ECONOMY
AB Trade in services has increased significantly and the United States has been a leader in services trade. The U.S. not only accounts for the largest share of world trade in private services but also runs a substantial amount of surplus in services trade. One important trend has been the rapid growth of U.S. trade in information-intensive services. This chapter examines the growth and patterns in U.S. exports and imports of various information-intensive services. The empirical analysis indicates that trade in business, professional, and technical services; financial services; and insurance has experienced the most rapid growth in recent times. This chapter further discusses some of the intuitively plausible explanations for the growth of trade in information-intensive services.
C1 [Apte, Uday M.] Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
[Apte, Uday M.] NPS, Monterey, CA USA.
[Apte, Uday M.] Univ Penn, Wharton Sch, Philadelphia, PA 19104 USA.
[Apte, Uday M.] So Methodist Univ, Edwin L Cox Sch Business, Dallas, TX 75275 USA.
[Apte, Uday M.] POMS, Coll Serv Operat, London, England.
[Nath, Hiranya K.] Sam Houston State Univ, Coll Business Adm, Huntsville, TX 77340 USA.
RP Apte, UM (reprint author), Naval Postgrad Sch, Grad Sch Business & Publ Policy, Monterey, CA 93943 USA.
NR 31
TC 0
Z9 0
U1 0
U2 0
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE
BN 978-981-4390-88-0; 978-981-4390-87-3
PY 2013
BP 117
EP 144
PG 28
WC Business
SC Business & Economics
GA BA1KE
UT WOS:000332665400007
ER
PT S
AU Cohen, LS
Jost, RJ
AF Cohen, Lawrence S.
Jost, Randy J.
GP IEEE
TI Spectrum Analysis and Measurements in a Congested Electromagnetic
Environment
SO 2013 IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY (EMC)
SE IEEE International Symposium on Electromagnetic Compatibility
LA English
DT Proceedings Paper
CT IEEE International Symposium on Electromagnetic Compatibility (EMC)
CY AUG 05-09, 2013
CL Denver, CO
SP IEEE, Adv Test Equipment Rentals, ANDRO, ETS LINDGREN, FEKO, Gauss Instruments, Infield Sci Inc, Retlif Testing Labs, CCPIT Gen Ind Sub Council, ECN, EMV Europe, ENR, Evaluat Engn, In Compliance, ITEM Media, Microwave Journal, Safety & EMC China, Webcom Commun, Wireless Design & Dev
DE Spectrum Measurement; Spectrum Congestion; Spectrum Surveys; Radar
Measurements; Spectral Analysis
AB The electromagnetic spectrum, from 2 MHz to 94 GHz, is an evolving resource. Many uses of the spectrum include communications, radio and television broadcasting, radio navigation, sensing and radar. The region of the spectrum from 2-4 GHz has become particularly problematical due to the influx of wireless systems such as WiMAX and LTE into an area which has traditionally been associated with radar systems. Although the entire EM spectrum is becoming increasingly congested, we will focus our examples on this band as a surrogate for understanding what is happening across the spectrum, while pointing out unique requirements in other bands. This paper will discuss measurements employed for characterizing both radar and nonradar users of this spectrum, as each have unique issues to be addressed. First, the propagation physics of why spectrum users seek access to selected frequency bands. The unique spectral characteristics of radars, not generally found in communications systems will be discussed. The trade-offs in using conventional superheterodyne and FFT based spectrum analyzers versus the newer real time spectrum analyzers, as well as other measurement techniques will be presented in terms of their capability in assessing the EM spectrum and determining how to best use a finite resource. It is projected that many radiating systems will be forced to monitor the EM spectrum and adjust their operating characteristics on a real-time basis. Finally, we will conclude with a short overview of the topics covered in the special session that this paper is a part of.
C1 [Cohen, Lawrence S.] Naval Res Lab, Washington, DC 20375 USA.
RP Cohen, LS (reprint author), Naval Res Lab, Washington, DC 20375 USA.
NR 15
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2158-110X
BN 978-1-4799-0409-9; 978-1-4799-0408-2
J9 IEEE INT SYMP ELEC
PY 2013
BP 66
EP 71
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BA3WJ
UT WOS:000334998800013
ER
PT S
AU Amarasinghe, PM
Abelev, A
AF Amarasinghe, Priyanthi M.
Abelev, Andrei
GP IEEE
TI Rheological Behavior of Flocculated Suspensions of Artificial Marine
Cohesive Sediment
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE Montmorillonite; guar gum; viscosity; flocculation; rheology
ID CHANNEL
AB The clay mineral type and the organic matter compositions have a strong influence on the mechanical properties of marine sediments. Understanding the viscous behavior of marine sediments composed of flocculated particles is important in many applications such as penetration of heavy objects in the cohesive seafloors and hydrodynamic transport of flocculated sediments among others. In this study, the effects of the clay and organic matter (OM) concentrations and the shear rate on the viscous behavior of the artificial flocs, similar to the ones that are found in the seabed, are studied. It was found that the addition of guar gum increases the viscosity of the floc suspensions significantly. The behavior appears to change from near-Newtonian at low OM concentration to mildly shear-thinning at high OM values. An empirical model was developed that allows to calculate the viscosity of the floc suspensions as a function of clay content, organic matter content and shear rate.
C1 [Amarasinghe, Priyanthi M.] Natl Res Council Postdoc, Washington, DC 20001 USA.
[Abelev, Andrei] Naval Res Lab, Washington, DC 20375 USA.
RP Amarasinghe, PM (reprint author), Natl Res Council Postdoc, Washington, DC 20001 USA.
FU ONRlNRL; NRC Research Associateship; NOO [173-08-2-C-005]
FX Authors would like to thank ONRlNRL and NRC Research Associateship
(grant number NOO 173-08-2-C-005) programs for funding of this research.
Authors are also thankful to Dr. P. Valent for reviewing and providing
constructive comments on this manuscript.
NR 6
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 6
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165800012
ER
PT S
AU Chu, PC
AF Chu, Peter C.
GP IEEE
TI Weibull Statistics in Ocean Analysis and Prediction
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE Weibull Statistics; Ocean Currents; Satellite Altimeter; OSCAR Data;
Ocean Analysis and Prediction
ID STOCHASTIC STABILITY; MODELS
AB This Ocean processes are typically sparsely observed, and their dynamics are high dimensional and nonlinear, so that the statistics are non-Gaussian. Successful and efficient analysis and prediction require these characteristics to be directly addressed in data assimilation, data fusion, and uncertainty quantification since methods using Gaussianity assumptions perform poorly in many applications. In this study, the Weibull distribution is proved more realistic in ocean analysis and prediction such as analysis of near ocean surface current and significant wave height data as well as numerical modeling in wave prediction. Use of the Weibull distribution will improve ocean analysis and prediction.
C1 Naval Postgrad Sch, Naval Ocean Anal & Predict NOAP Lab, Monterey, CA 93943 USA.
RP Chu, PC (reprint author), Naval Postgrad Sch, Naval Ocean Anal & Predict NOAP Lab, Monterey, CA 93943 USA.
EM pcchu@nps.edu
NR 8
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 4
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165802115
ER
PT S
AU Dhanak, M
An, E
Couson, R
Frankenfield, J
von Ellenrieder, K
Venezia, W
AF Dhanak, Manhar
An, Edgar
Couson, Robert
Frankenfield, John
von Ellenrieder, Karl
Venezia, William
GP IEEE
TI Magnetic Field Surveys of Coastal Waters Using an AUV-towed Magnetometer
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE AUV; Towed Magnetometer Survey; SeaSPY; South Florida; Coastal Waters
ID ELECTROMAGNETIC-FIELDS
AB AUV-based measurement of the magnetic field offshore of South Florida is described. The effort is part of a measurement program involving observations from fixed and mobile sensor systems in the region in support of characterizing the local background magnetic field in coastal waters. A SeaSpy magnetometer is towed at some distance from a Bluefin 21 AUV in order that the measurements of the magnetic field are not corrupted by the magnetic noise onboard the AUV. The SeaSpy magnetometer has a sensitivity of 0.01nT and resolution of 0.001nT so that it can facilitate observations in the expected measurement range of interest, 0.01 -1 nT. The AUV is equipped with onboard upward (600kHz) and downward (300kHz) looking ADCPs, and a CTD package which simultaneously provide the contextual in-situ oceanographic information, including temperature, salinity, and current velocity in the water column. Implementation of the towing system and the considerations given in making the implementation are described. Results from preliminary missions involving towing of the magnetometer in coastal waters are described.
C1 [Dhanak, Manhar; An, Edgar; Couson, Robert; Frankenfield, John; von Ellenrieder, Karl] Florida Atlantic Univ, SeaTech, Dept Ocean & Mech Engn, Dania, FL 33004 USA.
[Venezia, William] South Florida Ocean, Naval Surface Water Ctr, Carderock Div, Measurment Fac, Dania, FL 33004 USA.
RP Dhanak, M (reprint author), Florida Atlantic Univ, SeaTech, Dept Ocean & Mech Engn, Dania, FL 33004 USA.
EM Dhanak@fau.edu
FU Office of Naval Research [N000141010939]
FX The work is supported by the Office of Naval Research under grant
N000141010939.
NR 16
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 4
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165802099
ER
PT S
AU Frank, D
Foster, D
Chou, P
Kao, YM
Calantoni, J
Sou, IM
AF Frank, Donya
Foster, Diane
Chou, Pai
Kao, Yu-Min
Calantoni, Joseph
Sou, In-Mei
GP IEEE
TI Direct Measurements of Sediment Response to Waves with "Smart Sediment
Grains"
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
ID CONTINENTAL-SHELF; INCIPIENT MOTION; BOUNDARY-LAYER; BOTTOM; FLOW; BED
AB Measurements of sediment motion have been primarily limited to indirect observations with acoustic and optical instruments. A micro-electro-mechanical systems device that can measure and record Lagrangian observations of coastal sediments at incipient motion has been developed. These sensors move freely, measure acceleration in the six degrees of freedom and their mobility characteristics are similar to coarse gravel. Experiments conducted in a small oscillating flow tunnel and a large wave flume verified that the sensors detect incipient motion under various hydrodynamic conditions. Analysis of complementary fluid velocity measurements suggest the influence of pressure gradient induced sediment motion.
C1 [Frank, Donya] Univ New Hampshire, Ctr Ocean Engn, Durham, NH 03824 USA.
[Foster, Diane] Univ New Hampshire, Dept Engn Mech, Durham, NH 03824 USA.
[Chou, Pai] Univ Calif Irvine, Dept Elect Engn & Comp Sci, Irvine, CA USA.
[Kao, Yu-Min] Natl Tsing Hua Univ, Dept Comp Sci, Hsinchu, Taiwan.
[Calantoni, Joseph; Sou, In-Mei] Stennis Space Ctr, Marine Geosci Div, Naval Res Lab, Hancock, MS USA.
RP Frank, D (reprint author), Univ New Hampshire, Ctr Ocean Engn, Durham, NH 03824 USA.
EM donya.frank@unh.edu; diane.foster@unh.edu; pai.chou@uci.edu;
kkming761128kk@gmail.com; joe.calantoni@nrlssc.navy.mil;
InMei.Sou.ctr.pt@nrlssc.navy.mil
FU National Science Foundation
FX We would like to thank The National Science Foundation for funding, as
well as, our collaborators and colleagues for their support and advice.
NR 22
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 5
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165801132
ER
PT S
AU Geder, JD
Ramamurti, R
Pruessner, M
Palmisano, J
AF Geder, Jason D.
Ramamurti, Ravi
Pruessner, Marius
Palmisano, John
GP IEEE
TI Maneuvering Performance of a Four-Fin Bio-Inspired UUV
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE bio-inspired; UUV; pectoral fin; robotic fish; low-speed maneuvering;
underwater propulsion; station-keeping
ID PECTORAL FIN; MECHANICS; LOCOMOTION; DESIGN
AB This paper describes the modeling and maneuvering performance of a second generation (Gen2) bio-inspired unmanned underwater vehicle (UUV) propelled by four pectoral fins. Based on both computational fluid dynamics (CFD) simulations and experimental data, we developed a UUV model that includes a representation of actively controlled curvature fin-generated forces. The vehicle model is validated by comparing open-loop simulated responses with experimentally measured responses to identical fin thrust and lift inputs. Closed-loop control algorithms, which command changes in fin kinematics, are tested on the vehicle. Comparison of experimental and simulation results for various maneuvers validates the fin and vehicle models, and demonstrates the precise maneuvering capabilities enabled by the actively controlled curvature pectoral fins. Finally, various dynamics state responses of the Gen2 vehicle are compared with those of the smaller first generation (Gen1) vehicle to evaluate the effects of vehicle changes on performance.
C1 [Geder, Jason D.; Ramamurti, Ravi] Naval Res Lab, Lab Computat Phys & Fluid Dynam, Washington, DC 20375 USA.
[Pruessner, Marius] Naval Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
[Palmisano, John] Naval Res Lab, NOVO Res Inc, Washington, DC 20375 USA.
RP Geder, JD (reprint author), Naval Res Lab, Lab Computat Phys & Fluid Dynam, Washington, DC 20375 USA.
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 23
TC 0
Z9 0
U1 1
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 7
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165801156
ER
PT S
AU Horner, D
Xie, G
AF Horner, Douglas
Xie, Geoffrey
GP IEEE
TI Data-Driven Acoustic Communication Modeling for Undersea Collaborative
Navigation
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE Acoustic Communications; Collaborative Navigation; Kriging; Local
Connectivity Map; Global Connectivity Map; Autonomous Underwater
Vehicles
ID WIRELESS SENSOR NETWORKS; LOCALIZATION
AB Feedback control of collaborative mobile systems requires assumptions with regards to wireless networking to bound system performance. Traditional assumptions include a physics-based signal propagation model which can be especially inaccurate in dynamic and cluttered communication environments. This paper addresses a data-driven approach for modeling signal strength. It presents local and global connectivity maps for providing greater resolution with respect to received signal strength over a bounded area. The approach may be particularly useful for enabling more flexible and robust multi-vehicle navigation.
C1 [Horner, Douglas; Xie, Geoffrey] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Horner, D (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 21
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 10
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165802010
ER
PT S
AU Illig, DW
Jemison, WD
Rumbaugh, L
Lee, R
Laux, A
Mullen, L
AF Illig, David W.
Jemison, William D.
Rumbaugh, Luke
Lee, Robert
Laux, Alan
Mullen, Linda
GP IEEE
TI Enhanced hybrid lidar-radar ranging technique
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE underwater; optical; ranging; scattering
ID FREQUENCY-DOMAIN REFLECTOMETRY
AB A new hybrid lidar-radar underwater ranging technique is presented to enhance optical ranging in underwater environments. This technique has the potential to extend the unambiguous range by an order of magnitude while maintaining range precision that is comparable to existing techniques. The technique combines frequency domain reflectometry (FDR) [1] and modulated continuous wave (CW) ranging [2] to simultaneously achieve good unambiguous range and range precision performance. Theory and simulation are presented to demonstrate the FDR and combined FDR/CW approach. These results indicate that for the system parameters chosen the combined FDR/CW approach can extend the unambiguous range from tens of centimeters to approximately ten meters depending on water turbidity while maintaining the range precision associated with the CW approach.
C1 [Illig, David W.; Jemison, William D.; Rumbaugh, Luke] Clarkson Univ, Dept Elect & Comp Engn, Potsdam, NY 13699 USA.
[Lee, Robert; Laux, Alan; Mullen, Linda] NAVAIR, Div EO & Special Mission Sensors, Patuxent River, MD 20670 USA.
RP Illig, DW (reprint author), Clarkson Univ, Dept Elect & Comp Engn, Potsdam, NY 13699 USA.
EM illigdw@clarkson.edu
FU Office of Naval Research's University Laboratory Initiative (ULI)
[N00014-11-1-0371]
FX This work is supported by the Office of Naval Researchs University
Laboratory Initiative (ULI) program contract number N00014-11-1-0371.
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 Office of Naval Research.
NR 14
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 9
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165800017
ER
PT S
AU Kragelund, S
Dobrokhodov, V
Monarrez, A
Hurban, M
Khol, C
AF Kragelund, Sean
Dobrokhodov, Vladimir
Monarrez, Aurelio
Hurban, Michael
Khol, Curtis
GP IEEE
TI Adaptive Speed Control for Autonomous Surface Vessels
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE Autonomous unmanned surface vehicle; Adaptive control; Velocity control;
L-1 adaptation; Model reference adaptive control; PID control; Gain
scheduling; Unsteady hydrodynamics; SeaFox USV
AB The paper addresses the problem of speed control for the SeaFox unmanned surface vessel (USV). This small, versatile robotic platform can operate over a wide range of speeds, making it attractive for a number of scientific, commercial, and naval applications. This versatility, however, comes at a price. The vessel operates in displacement mode at low speeds and operates in planing mode at high speeds. These two regimes are connected via a highly unstable transition mode, where steady state operation is not possible, making autonomous operations challenging. Speed following is one of the key challenges in automating this class of vessel, as this capability is adversely affected by (i) the inherently slow dynamic response of the propulsion system, (ii) significant variation of the vessel's hydrodynamics in three distinct operating modes, and (iii) significant coupling between these hydrodynamics and the propulsion force. This paper presents a comparative study of three adaptive control algorithms developed for speed-holding capability on the SeaFox USV: (i) classical PID control with gain scheduling, (ii) model reference adaptive control, and (iii) L-1 adaptive control. Beginning with a description of the system identification experiments that informed our understanding of the open-loop plant dynamics, this paper proceeds through controller design and simulation, and presents results from open ocean sea trials. The experimental results provide a basis for an objective comparison of each algorithm's speed following performance and explicitly highlight the benefits of adaptive controllers.
C1 [Kragelund, Sean; Dobrokhodov, Vladimir; Monarrez, Aurelio] Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
[Hurban, Michael] US Navy, Chula Vista, CA 91915 USA.
[Khol, Curtis] US Naval Acad, Annapolis, MD 21402 USA.
RP Kragelund, S (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
EM spkragel@nps.edu; mahurban@gmail.com; m143474@usna.edu
FU Office of Naval Research [N0001413WX20883]
FX The authors gratefully acknowledge the support of Dr. Tom Drake at the
Office of Naval Research via contract N0001413WX20883
NR 16
TC 0
Z9 0
U1 1
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 10
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165801036
ER
PT S
AU Luznik, L
Van Benthem, M
Flack, KA
Lust, EE
AF Luznik, Luksa
Van Benthem, Max
Flack, Karen A.
Lust, Ethan E.
GP IEEE
TI Near Wake Characteristics of a Model Horizontal Axis Marine Current
Turbine under Steady and Unsteady Inflow Conditions
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE Horizontal axis turbine; near wake measurements; turbulence; waves
ID HYDRODYNAMIC PERFORMANCE; SURFACE-WAVES; FLOW
AB Near wake measurements on a 0.8 m diameter two-bladed horizontal axis tidal turbine model were obtained with two Nortek Vectrino+ Acoustic Doppler Velocimeters (ADV) sampling simultaneously at 200 Hz. The test matrix covered four radial positions from r/D=0.3 to 0.5 and five axial positions from d/D= 0.9 to 0.95. All measurements were performed at the nominal tip speed ratio (TSR) of 7.4. Two different cases were investigated. The first case had steady inflow conditions, i. e. constant carriage speed and the second case had a constant carriage speed and incoming regular waves with a period of 1.6 seconds and 0.09 m wave height. The distribution of mean velocities for the steady inflow case exhibit significant spatial variability in the wake region. Mean streamwise velocity show a decrease in the axial direction for all radial locations with magnitudes ranging from 0.55 at r/D=0.49 to 0.35 at r/D=0.3. Vertical and lateral mean velocities are small but consistent with counterclockwise fluid angular momentum for a clockwise rotor rotation. The Reynolds shear stresses consistently show elevated levels for measurements near the rotor tip ( r/D=0.49) and are significantly reduced by x/D=0.6 downstream. This suggests low turbulence levels in the wake which is consistent with very low inflow turbulence verified by the upstream ADV. For the case with waves, evidence of enhanced turbulence intensities and shear stresses within spatial coverage of the experiment suggest increased localized turbulence production in the blade tip region over the entire near wake region.
C1 [Luznik, Luksa; Van Benthem, Max; Flack, Karen A.; Lust, Ethan E.] US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
RP Luznik, L (reprint author), US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
EM luznik@usna.edu; maxvanbenthem@gmail.com; flack@usna.edu; lust@usna.edu
NR 20
TC 0
Z9 0
U1 0
U2 5
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 7
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165800126
ER
PT S
AU Ramotowski, TS
Tucker, WC
Rice, MA
AF Ramotowski, Thomas S.
Tucker, Wayne C.
Rice, Matthew A.
GP IEEE
TI Cathodic Debonding of Undersea Electronic Cable Connectors: Delamination
Kinetics When Primers and Encapsulants Are Bonded Directly to Bare Metal
Connector Backshells
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE cathodic delamination; cathodic disbondment; cable connectors;
accelerated life testing; adhesion; activation energy
AB When undersea cable connectors are attached to receptacles that are part of a cathodically protected vessel hull, the encapsulants applied over the connector backshells to protect the interior of the connector from seawater ingression often rapidly debond from the backshell, thereby compromising the interior of the cable and connector. This process is called "cathodic delamination" or "cathodic disbondment" and it is believed to be caused by the generation of highly alkaline conditions at the metal-encapsulant bondline due to the reduction of dissolved oxygen and the subsequent generation of hydroxyl (OH-) ions. An investigation into the kinetics of this process for the case where encapsulants and their associated primers are bonded directly to bare metal connector backshells was undertaken to develop better accelerated life testing techniques for marine hardware subject to cathodic delamination. Two different commercial encapsulation systems were investigated: PR-420 primer/PR-1547 polyurethane (PRC-DeSoto) and AD-1146 primer/EN-1556 polyurethane (Cytec). Small sacrificial zinc anodes were used to provide the proper cathodic polarization for the test samples. This testing revealed that cathodic debonding preferentially proceeds from exposed edges/bondlines inward, rather than through the encapsulant. Some primer/encapsulant systems (e.g., the PRC-Desoto system) are inherently more resistant to cathodic delamination that other systems. The rate at which the debonding proceeds was found to be diffusion controlled and was linear when plotted versus the square root of elapsed time. Debonding rate data were used to determine the Arrhenius activation energy for the cathodic delamination of both encapsulation systems (8.4 kcals/mole for the PRC-DeSoto system and 2.6 kcals/ mole for the Cytec system), which are quite different from the experimentally determined Arrhenius activation energies for the diffusion of water through the various encapsulants (3.1 kcals/mole and 3.9 kcals/mole, respectively). These results suggest that the cathodic delamination process for undersea electronic cable connectors is controlled by the rate of water and dissolved species diffusing along the disrupted bondline, rather than by water the rate of water and oxygen diffusing through the encapsulant.
C1 [Ramotowski, Thomas S.; Tucker, Wayne C.; Rice, Matthew A.] US Navy, Naval Sea Syst Command, Div Newport, Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Ramotowski, TS (reprint author), US Navy, Naval Sea Syst Command, Div Newport, Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
EM thomas.ramotowski@navy.mil
NR 6
TC 0
Z9 0
U1 2
U2 7
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 6
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165801142
ER
PT S
AU Stanic, S
Dahlburg, R
Caruthers, J
AF Stanic, Steve
Dahlburg, Russell
Caruthers, Jerald
GP IEEE
TI Bubble number densities in the wake of a propeller and a pump jet ship
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
ID ATTENUATION MEASUREMENTS; ACOUSTIC MEASUREMENTS; ITERATIVE APPROACH;
BREAKING WAVES; DISTRIBUTIONS; SPECTRA
AB Bubbly wakes generated by a surface ship are generally the result of cavitation generated by its propulsion system, and air being entrapped along the water line as the ship moves through the water. As this turbulent wake decays, bubbles of different sizes coalesce, break up, and rise at different rates. This results in changing horizontal and vertical bubble distributions that are a function of ship's speed, wake depth, and age. The changing vertical and horizontal distributions have a time and frequency dependent effect on acoustic signals that creates an excess attenuation. A series of acoustic attenuation measurements were taken across the wake of a propeller driven ship using NRL's acoustic wake characterization system. These measurements were taken over a broad range of acoustic frequencies (30 kHz to 140 kHz), ship speeds (18 and 22 knots), wake depths (3 m to 6 m), and wake age (4.5 to 9.7 minutes). The acoustic attenuations across the wake due to varying bubble-size densities were determined experimentally. Using these measured average acoustic attenuations across the wake and the resonant bubble approximation, estimates of the average bubble number densities in the wake of the propeller driven ship were derived. These bubble number densities are compared to those obtained for the wake of a similar sized pump jet ship, (Stanic et al JOE v34, Jan 2009). Results show that the bubble number densities for the propeller driven ship (18 knots) and the pump jet ship (15 knots) at a wake depth of 3 m were very similar. These bubble number densities were also seen to decrease with wake depth and age. As the propeller ship's speed increased, the bubble number densities for the propeller driven ship were lower than those for the pump jet ship at a speed of 15 knots. These results also showed that in general the wake of the propeller driven ship was not as intense and not as persistent as the wake of the pump jet ship at wake depths greater than 3 m and at all ship speeds.
C1 [Stanic, Steve] Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
[Dahlburg, Russell] Naval Res Lab, Washington, DC 20375 USA.
[Caruthers, Jerald] Univ Southern Mississippi, Stennis Space Ctr, MS 39529 USA.
RP Stanic, S (reprint author), Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
FU Office of Naval Research.
FX This work was supported by the Office of Naval Research.
NR 15
TC 0
Z9 0
U1 2
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 12
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165800034
ER
PT S
AU Streenan, A
Du Toit, NE
AF Streenan, Andrew
Du Toit, Noel E.
GP IEEE
TI Diver Relative AUV Navigation for Joint Human-Robot Operations
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE Unmanned Underwater Vehicle; Tethered; Hovering; Autonomous Underwater
Vehicle; Joint human-robot operations; dynamic, uncertain environments
AB A novel application for Autonomous Underwater Vehicles (AUVs) is considered here: a robotic diver assistant that enables close-quarters robotic operations with human divers. A robotic diver assistant has the potential to improve the efficiency, effectiveness and safety of diver operations. The robot diver assistant must share the operating environment with human divers: the robot must navigate relative to the environment to reach a specified site location (along with moving divers), then maneuver among the mostly static divers as they perform their tasks on location. Strategies for navigating among divers while ensuring diver safety are presented in this paper. A reactive strategy, based on potential fields, is investigated with a deliberative approach that accounts for process and environmental disturbances, as well as measurement noise. The deliberative approach is based on the Partially Closed-Loop Receding Horizon Control method. Accounting for such uncertainties is required for close-quarter operations due to the challenges associated with underwater navigation and sensing.
C1 [Streenan, Andrew; Du Toit, Noel E.] Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
RP Streenan, A (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
NR 18
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 10
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165801126
ER
PT S
AU Weiss, JD
Du Toit, NE
AF Weiss, Joshua D.
Du Toit, Noel E.
GP IEEE
TI Real-Time Dynamic Model Learning and Adaptation for Underwater Vehicles
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
DE Unmanned Underwater Vehicle; System Identification; Hydrodynamic Model;
Online Model Learning; Autonomous Underwater System
AB Precision control of Unmanned Underwater Vehicles (UUVs) requires accurate knowledge of the dynamic characteristics of the vehicles. However, developing such models are time and resource intensive. The problem is further exacerbated by the sensitivity of the dynamic model to vehicle configuration. This is particularly true for hovering-class UUVs since sensor payloads are often mounted outside the vehicle body. This paper presents a method to learn a dynamic model for such a hovering-class UUV in real time from motion and position measurements. System identification techniques are employed to estimate equations of motion coefficients. Initial results on the approach are presented.
C1 [Weiss, Joshua D.; Du Toit, Noel E.] Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
RP Weiss, JD (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
NR 10
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 10
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165801148
ER
PT S
AU Zuba, M
Jiang, ZH
Yang, TC
Su, YS
Cui, JH
AF Zuba, Michael
Jiang, Zaihan
Yang, T. C.
Su, Yishan
Cui, Jun-Hong
GP IEEE
TI An Advanced Channel Framework for Improved Underwater Acoustic Network
Simulations
SO 2013 OCEANS - SAN DIEGO
SE OCEANS-IEEE
LA English
DT Proceedings Paper
CT MTS/IEEE Oceans Conference
CY SEP 23-27, 2013
CL San Diego, CA
SP IEEE, Marine Technol Soc, IEEE Oceanic Engn Soc, Newfoundland Labrador, Seacon, UC San Diego, Scripps Inst Oceanog
AB Underwater Acoustic Networks (UANs) are an emerging technology that are being used to facilitate new aquatic applications in our water world. This is accomplished by linking underwater sensors, vehicles and devices together using acoustic communication. Network protocol development for UANs often relies on simulations because deploying real systems in the ocean is a resource heavy operation. However, acoustic communication performance is dynamic and dependent upon the environment. Therefore, simulations may not be entirely accurate. In this paper we introduce an advanced channel model that considers environmental impacts and real system characteristics on acoustic communication performance for use in an established open-source simulation environment, Aqua-Sim. We provide detailed simulation results and compare the results of our channel model with the existing simulation environment and against the results from a field experiment in the Chesapeake Bay from 2011.
C1 [Zuba, Michael; Su, Yishan; Cui, Jun-Hong] Univ Connecticut, Dept Comp Sci & Engn, Storrs, CT 06269 USA.
[Jiang, Zaihan] US Naval Res Lab, Acoust Div, Washington, DC USA.
[Yang, T. C.] Natl Sun Yat Sen Univ, Inst Appl Marine Phys & Undersea Technol, Kaohsiung, Taiwan.
RP Zuba, M (reprint author), Univ Connecticut, Dept Comp Sci & Engn, Storrs, CT 06269 USA.
FU National Science Foundation [OISE-1316548]
FX This material is based upon work supported by the National Science
Foundation under Grant No. OISE-1316548 (EAPSI Program). 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.
NR 23
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0197-7385
BN 978-0-933957-40-4
J9 OCEANS-IEEE
PY 2013
PG 8
WC Engineering, Marine; Oceanography
SC Engineering; Oceanography
GA BA3ER
UT WOS:000334165800046
ER
PT B
AU Dudas, PM
AF Dudas, Patrick M.
GP IEEE
TI Cooperative, Dynamic Twitter Parsing and Visualization for Dark Network
Analysis
SO PROCEEDINGS OF THE 2013 IEEE 2ND INTERNATIONAL NETWORK SCIENCE WORKSHOP
(NSW)
LA English
DT Proceedings Paper
CT IEEE 2nd Network Science Workshop (NSW)
CY APR 29-MAY 01, 2013
CL West Point, NY
SP IEEE, IEEE Comp Soc, Network Sci Ctr, Army Res Off, IEEE Task Force Network Sci
DE Dark Networks; Visualization; Social Network Analysis; User-Design
AB Developing a network based on Twitter data for social network analysis (SNA) is a common task in most academic domains. The need for real-time analysis is not as prevalent due to the fact that researchers are interested in the analysis of Twitter information after a major event or for an overall statistical or sociological study of general Twitter users. Dark network analysis is a specific field that focuses on criminal, terroristic, or people of interest networks in which evaluating information quickly and making decisions from this information is crucial. We propose a platform and visualization called Dynamic Twitter Network Analysis (DTNA) that incorporates real-time information from Twitter, its subsequent network topology, geographical placement of geotagged tweets on a Google Map, and storage for long-term analysis. The platform provides a SNA visualization that allows the user to interpret and change the search criteria quickly based on visual aesthetic properties built from key dark network utilities with a user interface that can be dynamic, up-to-date for time critical decisions and geographic specific.
C1 Naval Postgrad Sch, CORE Lab, Monterey, CA 93943 USA.
RP Dudas, PM (reprint author), Naval Postgrad Sch, CORE Lab, Monterey, CA 93943 USA.
EM pmdudas@nps.edu
NR 22
TC 3
Z9 3
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-0436-5; 978-1-4799-0203-3
PY 2013
BP 172
EP 176
PG 5
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BA4BC
UT WOS:000335317000031
ER
PT J
AU Yager, RR
Petry, FE
AF Yager, R. R.
Petry, F. E.
BE Pedrycz, W
Reformat, MZ
TI Intuitive Decision-Making Using Hyper Similarity Matching
SO PROCEEDINGS OF THE 2013 JOINT IFSA WORLD CONGRESS AND NAFIPS ANNUAL
MEETING (IFSA/NAFIPS)
LA English
DT Proceedings Paper
CT Joint World Congress of the International-Fuzzy-Systems-Association
(IFSA) / Annual Meeting of the
North-American-Fuzzy-Information-Processing-Society (NAFIPS)
CY JUN 24-28, 2013
CL Edmonton, CANADA
SP Int Fuzzy Syst Assoc, N Amer Fuzzy Informat Proc Soc, Elsevier, IEEE, IEEE, Syst, Man, & Cybernet Soc, Univ Alberta, Fac Engn, Willbros, Minist Commun & Informat Technologies Republ Azerbaijan, Fuji Technol Press Ltd, Govt Alberta, Enterprise & Adv Educ, CRC Press, De Gruyter
AB We present the use of hyper similarity matching for modeling the situational matching central to intuitive decision making with importance weights for situations with different weight vectors. Extreme values are used to characterize intuitive situational matching by introducing the concept of amplification of the importances for such extreme values and characterizing similarity matching based on amplification.
C1 [Yager, R. R.] Iona Coll, Inst Machine Intelligence, New Rochelle, NY 10801 USA.
[Petry, F. E.] Geospatial Sci & Technol Branch, Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Yager, RR (reprint author), Iona Coll, Inst Machine Intelligence, New Rochelle, NY 10801 USA.
EM yager@panix.com; fpetry@nrlssc.navy.mil
FU Naval Research Laboratory [0602435N]; ONR [N000141010121]; ARO MURI
[W911NF-09-1-0392]
FX We would like to thank the Naval Research Laboratorys Base Program,
Program Element No. 0602435N for sponsoring this research. R. Yager's
contribution has been in part supported by ONR grant award number
N000141010121 and ARO MURI grant Number W911NF-09-1-0392. We gratefully
appreciate this support.
NR 8
TC 3
Z9 3
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-0348-1
PY 2013
BP 386
EP 389
PG 4
WC Computer Science, Artificial Intelligence; Computer Science, Theory &
Methods; Logic
SC Computer Science; Science & Technology - Other Topics
GA BA2WN
UT WOS:000333960300067
ER
PT S
AU Kothe, CA
Makeig, S
Onton, JA
AF Kothe, Christian Andreas
Makeig, Scott
Onton, Julie Anne
GP IEEE
TI Emotion Recognition from EEG During Self-Paced Emotional Imagery
SO 2013 HUMAINE ASSOCIATION CONFERENCE ON AFFECTIVE COMPUTING AND
INTELLIGENT INTERACTION (ACII)
SE International Conference on Affective Computing and Intelligent
Interaction
LA English
DT Proceedings Paper
CT 5th Biannual Conference of the Humaine-Association on Affective
Computing and Intelligent Interaction (ACII)
CY SEP 02-05, 2013
CL Geneva, SWITZERLAND
SP Humaine Assoc, IEEE Comp Soc, Comp Vis, Multimedia Lab, Univ Geneva, Swiss Ctr Affect Sci, GFK Verein, Technicolor, Telono, Brain Prod, Inst Telecom, Telecom ParisTech, Swiss Natl Sci Fdn, Soc Academique Geneve, Amer Assoc Artificial Intelligence
DE emotion; valence; brain-computer interface; EEG; machine learning;
guided imagery
AB Here we present an analysis of a 12-subject electroencephalographic (EEG) data set in which participants were asked to engage in prolonged, self-paced episodes of guided emotion imagination with eyes closed. Our goal is to correctly predict, given a short EEG segment, whether the participant was imagining a positive respectively negative-valence emotional scenario during the given segment using a predictive model learned via machine learning. The challenge lies in generalizing to novel (i.e., previously unseen) emotion episodes from a wide variety of scenarios including love, awe, frustration, anger, etc. based purely on spontaneous oscillatory EEG activity without stimulus event-locked responses. Using a variant of the Filter-Bank Common Spatial Pattern algorithm, we achieve an average accuracy of 71.3% correct classification of binary valence rating across 12 different emotional imagery scenarios under rigorous block-wise cross-validation.
C1 [Kothe, Christian Andreas; Makeig, Scott] Univ Calif San Diego, Swartz Ctr Computat Neurosci, La Jolla, CA 92093 USA.
[Onton, Julie Anne] Naval Hlth Res Ctr, San Diego, CA 92152 USA.
RP Kothe, CA (reprint author), Univ Calif San Diego, Swartz Ctr Computat Neurosci, La Jolla, CA 92093 USA.
EM christian@sccn.ucsd.edu; scott@sccn.ucsd.edu; julie.onton@med.navy.mil
FU The Swartz Foundation (Old Field, NY); National Institute for Mental
Health USA [R01 NS074293]; National Science Foundation USA [IIS-0613595]
FX This work was supported by a gift from The Swartz Foundation (Old Field,
NY) as well as by grants from the National Institute for Mental Health
USA (R01 NS074293) and the National Science Foundation USA
(IIS-0613595).
NR 17
TC 7
Z9 7
U1 1
U2 8
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2156-8103
BN 978-0-7695-5048-0
J9 INT CONF AFFECT
PY 2013
BP 855
EP 858
DI 10.1109/ACII.2013.160
PG 4
WC Computer Science, Artificial Intelligence; Computer Science, Information
Systems; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BA2RH
UT WOS:000333833400155
ER
PT S
AU Rao, SM
Chatterjee, D
AF Rao, Sadasiva M.
Chatterjee, Deb
GP IEEE Antennas & Propagat Soc
TI An Exact Analytical Procedure to Evaluate Sommerfeld Integrals in
Layered Media Problems
SO 2013 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT International Symposium of the IEEE-Antennas-and-Propagation-Society
CY JUL 07-13, 2013
CL Orlando, FL
SP Inst Elect & Elect Engineers, IEEE Antennas & Propagat Soc, APS
AB In this work we develop a comprehensive numerical method to evaluate the Sommerfeld Integrals appearing in layered media problems using simple algebraic functions which enable closed form integration. The resulting algorithm is much simpler than the conventional discrete complex image method. Detailed mathematical steps are enumerated for evaluating Sommerfeld integrals involving zero-order and first-order Bessel functions and can be extended to higher-order functions easily.
C1 [Rao, Sadasiva M.] Naval Res Lab, Div Radar, Washington, DC 20375 USA.
[Chatterjee, Deb] Univ Missouri Kansas City, CSEE Dept, Columbia, MO 64110 USA.
RP Rao, SM (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 USA.
NR 4
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4673-5317-5
J9 IEEE ANTENNAS PROP
PY 2013
BP 1324
EP +
PG 2
WC Telecommunications
SC Telecommunications
GA BA1OQ
UT WOS:000332766801201
ER
PT S
AU Peralta, M
Mukhopadhyay, S
Bharadwaj, R
AF Peralta, Manuel
Mukhopadhyay, Supratik
Bharadwaj, Ramesh
GP IEEE
TI A Type-theoretic Framework for Automated Synthesis of Workflows in
Service-oriented Computing
SO 2013 33RD IEEE INTERNATIONAL CONFERENCE ON DISTRIBUTED COMPUTING SYSTEMS
WORKSHOPS (ICDCSW 2013)
SE IEEE International Conference on Distributed Computing Systems Workshops
LA English
DT Proceedings Paper
CT 33rd IEEE International Conference on Distributed Computing Systems
(ICDCS)
CY JUL 08-11, 2013
CL Philadelphia, PA
SP IEEE, IEEE Comp Soc
AB We describe a technique for automatic synthesis of workflows in service-oriented systems [7] from a type-theoretic specification of coordination requirements. The technique presented involves formal semantics-based, automatic synthesis of service coordination workflows from the business logic of the clients using type and effect inference. The type and effect deduction, apart from synthesizing the workflow, provides formal proofs that the business requirements of the clients in a service-oriented system are met. The service descriptions and the business requirements are specified as a set of type judgements in an (intuitionistic) type theory. Workflows can be generated from a (type and effect) inference of the requirements from the "service theory".
C1 [Peralta, Manuel; Mukhopadhyay, Supratik] Louisiana State Univ, Dept Comp Sci, Baton Rouge, LA 70803 USA.
[Bharadwaj, Ramesh] Naval Res Lab, Washington, DC 20375 USA.
RP Peralta, M (reprint author), Louisiana State Univ, Dept Comp Sci, Baton Rouge, LA 70803 USA.
EM mperal4@lsu.edu; supratik@csc.lsu.edu; ramesh@itd.nrl.navy.mil
NR 13
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1545-0678
BN 978-1-4799-3247-4; 978-0-7695-5023-7
J9 IEEE INT CON DIS
PY 2013
BP 374
EP 379
DI 10.1109/ICDCSW.2013.58
PG 6
WC Computer Science, Hardware & Architecture; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA BA1QD
UT WOS:000332852800065
ER
PT S
AU Yuan, X
Shi, Y
Hou, YT
Lou, WJ
Kompella, S
AF Yuan, Xu
Shi, Yi
Hou, Y. Thomas
Lou, Wenjing
Kompella, Sastry
GP IEEE
TI UPS: A United Cooperative Paradigm for Primary and Secondary Networks
SO 2013 IEEE 10TH INTERNATIONAL CONFERENCE ON MOBILE AD-HOC AND SENSOR
SYSTEMS (MASS 2013)
SE IEEE International Conference on Mobile Ad-hoc and Sensor Systems
LA English
DT Proceedings Paper
CT IEEE 10th International Conference on Mobile Ad-Hoc and Sensor Systems
(MASS)
CY OCT 14-16, 2013
CL Hangzhou, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Distributed Proc, IEEE Tech Comm Simulat, Zhejiang Univ, Natl Nat Sci Fdn China
ID WIRELESS NETWORKS
AB The dominant spectrum sharing paradigm of today is the interweave paradigm. This paper advocates a new and alternative paradigm called United network of Primary and Secondary networks (UPS). UPS allows a complete cooperation between primary and secondary networks at the node level to relay each other's traffic, in addition to existing dynamic spectrum access (DSA) in time, space, and frequency domains. Such cooperation allows the primary and secondary networks to access a much richer network resources from the combined network. As a case study, we consider a problem with the goal of supporting the rate requirement of the primary network traffic while maximizing the minimum throughput of the secondary sessions. For this problem, we develop an optimization model and formulate a combinatorial optimization problem. Although this problem is in the form of mixed integer linear program (MILP), we can use CPLEX to solve it efficiently. Simulation results show that the UPS paradigm offers much better throughput performance than the interweave DSA paradigm.
C1 [Yuan, Xu; Shi, Yi; Hou, Y. Thomas; Lou, Wenjing] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA.
[Kompella, Sastry] US Naval Res Lab, Washington, DC USA.
RP Hou, YT (reprint author), Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA.
EM thou@vt.edu
FU NSF [0831865, 1343222, 1064953, 1156318, 1156311]; ONR [N000141310080]
FX This research was supported in part by NSF Grants 0831865, 1343222,
1064953, 1156318, 1156311, and ONR Grant N000141310080. The work of S.
Kompella was supported by the ONR.
NR 15
TC 5
Z9 5
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2155-6806
BN 978-0-7695-5104-3
J9 IEEE INT CONF MOB
PY 2013
BP 78
EP 85
DI 10.1109/MASS.2013.80
PG 8
WC Computer Science, Hardware & Architecture; Remote Sensing;
Telecommunications
SC Computer Science; Remote Sensing; Telecommunications
GA BA1QB
UT WOS:000332850500010
ER
PT S
AU Abramovich, YI
Antonio, GS
Frazer, GJ
AF Abramovich, Yuri I.
Antonio, Geoffrey San
Frazer, Gordon J.
GP IEEE
TI Over-the-Horizon Radar Signal-to-External Noise Ratio Improvement in
Over-Sampled Uniform 2D Antenna Arrays: Theoretical Analysis of
Superdirective SNR Gains
SO 2013 IEEE RADAR CONFERENCE (RADAR)
SE IEEE Radar Conference
LA English
DT Proceedings Paper
CT IEEE Radar Conference (RADAR)
CY APR 29-MAY 03, 2013
CL Ottawa, CANADA
SP IEEE, IEEE Ottawa Sect, AESS
DE Over-the-horizon radar; 2D phased array; superdirectivity; oversampled
array; mutual coupling; HF
AB We present the results of theoretical signal-to-noise (SNR) performance assessment for optimal (adaptive) and conventionally beamformed uniform rectangular antenna arrays with inter-element spacing smaller than the half-wavelength. We provide theoretical analysis of SNR in such arrays, exposed to strong night-time external noise arriving from all azimuth (Az) and elevation (El) angles. In addition to uniform (in Az and El) noise distribution, we also consider two distributions uniform in Az but "tapered" in elevation. This elevation "tapering" accounts for more realistic external noise propagation mechanisms. For uniform external noise, the definitions of the output signal-to-external noise ratio (SENR) coincides with directivity; and therefore, any SINR gains delivered by the optimum (vs. conventional) beamforming are exclusively associated with the superdirectivity of these arrays. We analyze these superdirective SNR gains for uniform and "tapered" in El external noise distributions with respect to different limiting factors, including mutual coupling, calibration accuracy, and internal noise. We demonstrate that within the frequency range such that d/lambda=[1/5, 1], the optimum (adaptive) beamforming may secure practically constant SNR gains, equal to 10 log(10) N, where N is the number of antenna elements in an array.
C1 [Abramovich, Yuri I.] WR Syst, Fairfax, VA 22030 USA.
[Antonio, Geoffrey San] US Naval Res Lab, Washington, DC 20375 USA.
[Frazer, Gordon J.] DSTO, ISR Div, Edinburgh, Midlothian, Scotland.
RP Abramovich, YI (reprint author), WR Syst, Fairfax, VA 22030 USA.
FU Office of Naval Research under an NRL 6.1 Base Program
FX This work was sponsored by the Office of Naval Research under an NRL 6.1
Base Program.
NR 12
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1097-5764
BN 978-1-4673-5794-4; 978-1-4673-5792-0
J9 IEEE RAD CONF
PY 2013
PG 5
WC Engineering, Electrical & Electronic; Physics, Applied;
Telecommunications
SC Engineering; Physics; Telecommunications
GA BA1GF
UT WOS:000332480800107
ER
PT S
AU Baylis, C
Martin, J
Fellows, M
Moon, D
Moldovan, M
Cohen, L
Marks, RJ
AF Baylis, Charles
Martin, Josh
Fellows, Matthew
Moon, David
Moldovan, Matt
Cohen, Lawrence
Marks, Robert J., II
GP IEEE
TI Radar Power Amplifier Circuit and Waveform Optimization for Spectrally
Confined, Reconfigurable Radar Systems
SO 2013 IEEE RADAR CONFERENCE (RADAR)
SE IEEE Radar Conference
LA English
DT Proceedings Paper
CT IEEE Radar Conference (RADAR)
CY APR 29-MAY 03, 2013
CL Ottawa, CANADA
SP IEEE, IEEE Ottawa Sect, AESS
AB Increasingly stringent spectral spreading constraints are motivating a paradigm shift in the spectrum engineering of radar systems. Future spectrum requirements will likely dictate narrower spectral masks that will change based on geography. The desire to operate radar systems efficiently with waveforms that will provide desired detection capabilities must mesh with the need to meet spectral mask criteria. To this end, a collaborative research effort between Baylor University and the U.S. Naval Research Laboratory has resulted in the design of reconfigurable circuit and waveform approaches to optimize spectral confinement, power efficiency, and detection capabilities. This paper surveys the joint optimization approach and describes innovations by the authors in circuit and waveform reconfiguration that will be useful in future flexible radar transmitters.
C1 [Baylis, Charles; Martin, Josh; Fellows, Matthew; Moon, David; Moldovan, Matt; Marks, Robert J., II] Baylor Univ, Dept Elect & Comp Engn, Wireless & Microwave Circuits & Syst Program, Waco, TX 76798 USA.
[Cohen, Lawrence] Naval Res Lab, Div Radar, Washington, DC 20375 USA.
RP Baylis, C (reprint author), Baylor Univ, Dept Elect & Comp Engn, Wireless & Microwave Circuits & Syst Program, Waco, TX 76798 USA.
FU United States Naval Research Laboratory to Baylor University; Advanced
Design System software; Modelithics University Program
FX This work has been funded under a grant from the United States Naval
Research Laboratory to Baylor University. The authors wish to thank
Agilent Technologies for cost-free loan of the Advanced Design System
software, and Modelithics for the donation of simulation device model
libraries through the Modelithics University Program.
NR 6
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1097-5764
BN 978-1-4673-5794-4; 978-1-4673-5792-0
J9 IEEE RAD CONF
PY 2013
PG 4
WC Engineering, Electrical & Electronic; Physics, Applied;
Telecommunications
SC Engineering; Physics; Telecommunications
GA BA1GF
UT WOS:000332480800074
ER
PT S
AU Griffiths, H
Blunt, S
Cohen, L
Savy, L
AF Griffiths, Hugh
Blunt, Shannon
Cohen, Larry
Savy, Laurent
GP IEEE
TI Challenge Problems in Spectrum Engineering and Waveform Diversity
SO 2013 IEEE RADAR CONFERENCE (RADAR)
SE IEEE Radar Conference
LA English
DT Proceedings Paper
CT IEEE Radar Conference (RADAR)
CY APR 29-MAY 03, 2013
CL Ottawa, CANADA
SP IEEE, IEEE Ottawa Sect, AESS
ID TRANSMITTERS
AB We describe and discuss some of the current challenges facing radar that result from continued spectral encroachment, which necessitating enhanced robustness to interference, agile waveform-diverse operation, and greater synergy between the signal processing and the physical radar/environment. Subsequently, specific research topics are suggested in which spectrum engineering and waveform diversity may yield viable solutions. In so doing, this paper also provides an introduction to the special session on radar spectrum engineering and waveform diversity affiliated with NATO Task Groups SET-182 and SET-179, respectively.
C1 [Griffiths, Hugh] UCL, London WC1E 6BT, England.
[Blunt, Shannon] Univ Kansas, Kansas City, KS USA.
[Cohen, Larry] Naval Res Lab, Washington, DC USA.
[Savy, Laurent] Off Natl Etud & Rech Aerosp, Palaiseau, France.
RP Griffiths, H (reprint author), UCL, London WC1E 6BT, England.
FU NATO [SET-179, SET-182]
FX We acknowledge the contributions of all of our colleagues on the NATO
SET-179 and SET-182 Task Groups. We also express our thanks to the
various organisations that have funded our work, which include the UK
Ministry of Defence, and the US Air Force Office of Scientific Research.
NR 19
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1097-5764
BN 978-1-4673-5794-4; 978-1-4673-5792-0
J9 IEEE RAD CONF
PY 2013
PG 5
WC Engineering, Electrical & Electronic; Physics, Applied;
Telecommunications
SC Engineering; Physics; Telecommunications
GA BA1GF
UT WOS:000332480800177
ER
PT S
AU Gulum, TO
Erdogan, AY
Durak-Ata, L
Yildirim, T
Pace, PE
AF Gulum, Taylan O.
Erdogan, A. Yasin
Durak-Ata, Lutfiye
Yildirim, Tulay
Pace, Phillip E.
GP IEEE
TI Elliptic Gaussian Filtering for Time-Frequency Signal Analysis
SO 2013 IEEE RADAR CONFERENCE (RADAR)
SE IEEE Radar Conference
LA English
DT Proceedings Paper
CT IEEE Radar Conference (RADAR)
CY APR 29-MAY 03, 2013
CL Ottawa, CANADA
SP IEEE, IEEE Ottawa Sect, AESS
ID DISTRIBUTIONS
AB Increased use of low probability of intercept (LPI) waveforms in current radar systems, enforces the use of sophisticated hardware and signal processing algorithms in intercept receiver technology. In this study, an adaptive filtering technique based on elliptic Gaussian filter is proposed to be used by intercept receivers. The filter is implemented on Wigner-Ville Distribution (WVD) images of different intercepted LPI radar waveforms to de-noise the image in order to help the Electronic Support operators in the signal analysis effort. The slope of the LFM waveforms, thus the filter's, can be determined by using Hough Transform, Radon Transform or any other method.
C1 [Gulum, Taylan O.; Erdogan, A. Yasin; Durak-Ata, Lutfiye; Yildirim, Tulay] Yildiz Tech Univ, Dept Eln & Comms Engn, Davutpasa, Ist, Turkey.
[Pace, Phillip E.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
RP Gulum, TO (reprint author), Yildiz Tech Univ, Dept Eln & Comms Engn, Davutpasa, Ist, Turkey.
EM gulum.taylan@ieee.org; erdogan.yasin@ieee.org; lutfiye@ieee.org;
tulay@yildiz.edu.tr; pepace@nps.edu
NR 11
TC 0
Z9 0
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1097-5764
BN 978-1-4673-5794-4; 978-1-4673-5792-0
J9 IEEE RAD CONF
PY 2013
PG 5
WC Engineering, Electrical & Electronic; Physics, Applied;
Telecommunications
SC Engineering; Physics; Telecommunications
GA BA1GF
UT WOS:000332480800010
ER
PT S
AU Higgins, T
Webster, T
Shackelford, AK
AF Higgins, Thomas
Webster, Tegan
Shackelford, Aaron K.
GP IEEE
TI Mitigating Interference via Spatial and Spectral Nulling: Open Air
Experimental Results
SO 2013 IEEE RADAR CONFERENCE (RADAR)
SE IEEE Radar Conference
LA English
DT Proceedings Paper
CT IEEE Radar Conference (RADAR)
CY APR 29-MAY 03, 2013
CL Ottawa, CANADA
SP IEEE, IEEE Ottawa Sect, AESS
AB Phase only transmit nulling may help the next generation of radar systems operate in an over-crowded RF spectrum. Open air experimental results from an eight-channel X-band radar test bed are presented that demonstrate an approach for generating constant modulus waveforms that possess spatial nulls when transmitted from an antenna array. The Re-iterative Uniform Weight Optimization (RUWO) algorithm is utilized to generate phase only weights using both a deterministic and adaptive approach. The two strategies are compared. The results demonstrate that RUWO can be used to create spatial nulls and highlight the need for careful calibration of both the transmitter and receiver.
C1 [Higgins, Thomas; Webster, Tegan; Shackelford, Aaron K.] US Naval Res Lab, Div Radar, Washington, DC 20375 USA.
RP Higgins, T (reprint author), US Naval Res Lab, Div Radar, Washington, DC 20375 USA.
NR 6
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1097-5764
BN 978-1-4673-5794-4; 978-1-4673-5792-0
J9 IEEE RAD CONF
PY 2013
PG 6
WC Engineering, Electrical & Electronic; Physics, Applied;
Telecommunications
SC Engineering; Physics; Telecommunications
GA BA1GF
UT WOS:000332480800200
ER
PT S
AU Seguin, SA
Cordill, BD
Cohen, L
AF Seguin, Sarah A.
Cordill, Brian D.
Cohen, Lawrence
GP IEEE
TI Radar System Impacts due to Spectrum Attributes of Frequency-Steerable
Phased Array Antenn
SO 2013 IEEE RADAR CONFERENCE (RADAR)
SE IEEE Radar Conference
LA English
DT Proceedings Paper
CT IEEE Radar Conference (RADAR)
CY APR 29-MAY 03, 2013
CL Ottawa, CANADA
SP IEEE, IEEE Ottawa Sect, AESS
DE Radar; radar clutter; antennas; antenna arrays; phased arrays; slot
antennas
AB Possible differences between boresight and off-boresight emissions of phased array radar systems can impact a radar system's performance. This could result in a distorted transmitted radar waveform. In order to understand the significance of this distortion on a radar system, a simulation study was completed for a notional 3.5 GHz radar having both a continuous wave pulsed waveform and a linear FM waveform. This simulation study was verified using available measurement data. The radar system's performance was then assessed by using radar ambiguity plots for each of these radar waveforms. It was concluded that some distortion is present even on-boresight in addition to the off-boresight emissions difference. Further understanding of the specific off-boresight distortion could lead to better clutter suppression.
C1 [Seguin, Sarah A.; Cordill, Brian D.] Univ Kansas, Lawrence, KS 66045 USA.
[Cohen, Lawrence] Div Radar, Naval Res Lab, Washington, DC USA.
RP Seguin, SA (reprint author), Univ Kansas, Lawrence, KS 66045 USA.
EM seguin@ku.edu; bcordill@ku.edu; lawrence.cohen@nrl.navy.mil
NR 5
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1097-5764
BN 978-1-4673-5794-4; 978-1-4673-5792-0
J9 IEEE RAD CONF
PY 2013
PG 5
WC Engineering, Electrical & Electronic; Physics, Applied;
Telecommunications
SC Engineering; Physics; Telecommunications
GA BA1GF
UT WOS:000332480800172
ER
PT S
AU Vouras, P
AF Vouras, Peter
GP IEEE
TI Multistage Adaptive Pulse Compression
SO 2013 IEEE RADAR CONFERENCE (RADAR)
SE IEEE Radar Conference
LA English
DT Proceedings Paper
CT IEEE Radar Conference (RADAR)
CY APR 29-MAY 03, 2013
CL Ottawa, CANADA
SP IEEE, IEEE Ottawa Sect, AESS
AB Many modern radar systems employ pulse compression to maximize the energy on target while maintaining high range resolution. For a solitary point target in white noise, employing a matched filter on receive will maximize the target signal-to-noise ratio (SNR) at the output of the receiver. The matched filter itself is a time-reversed version of the transmitted waveform which is convolved with the received time series to pulse compress the data. A drawback to the matched filter receiver is the range sidelobes which extend on either side of the point target and may mask another weaker target. To reduce range sidelobes after pulse compression, novel adaptive pulse compression techniques have been developed. One such technique is the Reiterative Minimum Mean Square Error Adaptive Pulse Compression (RMMSE-APC) algorithm. This algorithm employs an optimal compression filter at each range bin and significantly reduces the range sidelobes in the vicinity of large targets. In this paper, a pulse compression filter with output identical to the RMMSE filter is derived by employing a multi-stage decomposition of the Wiener filter. A reduced rank version of the Multi-Stage Wiener Filter (MSWF) with lower computational complexity can be created by pruning the number of stages in the decomposition.
C1 Naval Res Lab, Washington, DC 20375 USA.
RP Vouras, P (reprint author), Naval Res Lab, Washington, DC 20375 USA.
NR 6
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1097-5764
BN 978-1-4673-5794-4; 978-1-4673-5792-0
J9 IEEE RAD CONF
PY 2013
PG 5
WC Engineering, Electrical & Electronic; Physics, Applied;
Telecommunications
SC Engineering; Physics; Telecommunications
GA BA1GF
UT WOS:000332480800202
ER
PT S
AU Vouras, P
AF Vouras, Peter
GP IEEE
TI Impact of Environmental Scattering on Transmit Nulling Performance
SO 2013 IEEE RADAR CONFERENCE (RADAR)
SE IEEE Radar Conference
LA English
DT Proceedings Paper
CT IEEE Radar Conference (RADAR)
CY APR 29-MAY 03, 2013
CL Ottawa, CANADA
SP IEEE, IEEE Ottawa Sect, AESS
AB Promising techniques have recently been developed for creating nulls in the transmit sidelobes of a radar by using the signal from a nearby auxiliary antenna. In operational settings, the performance of these nulling techniques will be sensitive to electromagnetic scattering from objects in the vicinity of the antennas. This paper presents a theoretical analysis of the impact of environmental and multipath scattering on transmit nulling performance for a radar system comprised of a main antenna and an auxiliary. A case study example is described for scattering off the ocean surface.
C1 Naval Res Lab, Div Radar, Washington, DC 20375 USA.
RP Vouras, P (reprint author), Naval Res Lab, Div Radar, 4555 Overlook Ave SW, Washington, DC 20375 USA.
NR 17
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1097-5764
BN 978-1-4673-5794-4; 978-1-4673-5792-0
J9 IEEE RAD CONF
PY 2013
PG 6
WC Engineering, Electrical & Electronic; Physics, Applied;
Telecommunications
SC Engineering; Physics; Telecommunications
GA BA1GF
UT WOS:000332480800196
ER
PT S
AU Webster, T
Cheney, M
Mokole, EL
AF Webster, Tegan
Cheney, Margaret
Mokole, Eric L.
GP IEEE
TI Modeling of Transmission, Scattering, and Reception for Multistatic
Polarimetric Radar
SO 2013 IEEE RADAR CONFERENCE (RADAR)
SE IEEE Radar Conference
LA English
DT Proceedings Paper
CT IEEE Radar Conference (RADAR)
CY APR 29-MAY 03, 2013
CL Ottawa, CANADA
SP IEEE, IEEE Ottawa Sect, AESS
ID BISTATIC SCATTERING; DIPOLE; PULSE
AB This paper develops a data model and corresponding imaging operation for multistatic polarimetric radar. The mathematical model describes the processes of radiation from a transmitting antenna, scattering from a moving target, and reception at a receiving antenna. A bistatic scattering matrix based on physical optics and the fast-time Doppler effects of a moving target are incorporated. Simulations are presented that consider a moving target in multiple transmitter and receiver configurations with multiple transmit waveforms and polarization schemes.
C1 [Webster, Tegan; Mokole, Eric L.] Naval Res Lab, Div Radar, Washington, DC 20375 USA.
[Cheney, Margaret] Colorado State Univ, Dept Math, Ft Collins, CO 80523 USA.
RP Webster, T (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 USA.
FU Naval Research Laboratory; National Defense Science and Engineering
Graduate Fellowship; Air Force Office of Scientific Research
[FA9550-09-1-0013]
FX This work was supported by the Naval Research Laboratory, the National
Defense Science and Engineering Graduate Fellowship, and the Air Force
Office of Scientific Research under agreement FA9550-09-1-0013
NR 25
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1097-5764
BN 978-1-4673-5794-4; 978-1-4673-5792-0
J9 IEEE RAD CONF
PY 2013
PG 6
WC Engineering, Electrical & Electronic; Physics, Applied;
Telecommunications
SC Engineering; Physics; Telecommunications
GA BA1GF
UT WOS:000332480800098
ER
PT B
AU Manso, M
Manso, B
AF Manso, Marco
Manso, Barbara
BE Akhgar, B
Yates, S
TI The Role of Social Media in Crisis: A European Holistic Approach to the
Adoption of Online and Mobile Communications in Crisis Response and
Search and Rescue Efforts
SO STRATEGIC INTELLIGENCE MANAGEMENT: NATIONAL SECURITY IMPERATIVES AND
INFORMATION AND COMMUNICATIONS TECHNOLOGIES
LA English
DT Article; Book Chapter
C1 [Manso, Marco] TEKEVER, Commun Syst Dept, Lisbon, Portugal.
[Manso, Marco; Manso, Barbara] US Naval Postgrad Sch, Monterey, CA USA.
[Manso, Marco; Manso, Barbara] Portuguese Mil Acad, Lisbon, Portugal.
[Manso, Marco] Univ Evora, Evora, Portugal.
[Manso, Barbara] TEKEVER, Image & Commun, Lisbon, Portugal.
RP Manso, M (reprint author), TEKEVER, Commun Syst Dept, Lisbon, Portugal.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU ELSEVIER BUTTERWORTH-HEINEMANN
PI BURLINGTON
PA 30 CORPORATE DRIVE, STE 400, BURLINGTON, MA 01803 USA
BN 978-0-12-407219-0; 978-0-12-407191-9
PY 2013
BP 93
EP 107
PG 15
WC Computer Science, Theory & Methods; Criminology & Penology
SC Computer Science; Criminology & Penology
GA BA0MW
UT WOS:000331907600010
ER
PT S
AU Thakur, D
Likhachev, M
Keller, J
Kumar, V
Dobrokhodov, V
Jones, K
Wurz, J
Kaminer, I
AF Thakur, Dinesh
Likhachev, Maxim
Keller, James
Kumar, Vijay
Dobrokhodov, Vladimir
Jones, Kevin
Wurz, Jeff
Kaminer, Isaac
BE Amato, N
TI Planning for Opportunistic Surveillance with Multiple Robots
SO 2013 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS
(IROS)
SE IEEE International Conference on Intelligent Robots and Systems
LA English
DT Proceedings Paper
CT IEEE/RSJ International Conference on Intelligent Robots and Systems
(IROS)
CY NOV 03-08, 2013
CL Tokyo, JAPAN
SP IEEE, IEEE Robot & Automat Soc, IEEE Ind Elect Soc, Robot Soc Japan, New Technol Fdn, Soc Instrument & Control Engineers, Kawada Robot, Reflexxes GmbH, Telecommunicat Advancement Fdn, Tateisi Sci & Technol Fdn
ID TEAM ORIENTEERING PROBLEM; TRAVELING SALESMAN PROBLEM; SOLVE
AB We are interested in the multiple robot surveillance problem where robots must allocate waypoints to be visited among themselves and plan paths through different waypoints while avoiding obstacles. Furthermore, the robots are allocated specific times to reach their respective goal locations and as a result they have to decide which robots have to visit which waypoints. Such a problem has the challenge of computing the allocation of waypoints across robots, ordering for these waypoints and dynamical feasibility of the paths between waypoints. We present an algorithm that runs a series of graph searches to solve the problem and provide theoretical analysis that our approach yields an optimal solution. We present simulated results as well as experiments on two UAVs that validate the capability of our algorithm. For a single robot, we can solve instances having 10-15 waypoints and for multiple robots, instances having five robots and 10 waypoints can be solved.
C1 [Thakur, Dinesh; Keller, James; Kumar, Vijay] Univ Penn, Grasp Lab, Philadelphia, PA 19104 USA.
[Likhachev, Maxim] Carnegie Mellon Univ, Inst Robot, Pittsburgh, PA 15213 USA.
[Wurz, Jeff; Kaminer, Isaac] Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA USA.
RP Thakur, D (reprint author), Univ Penn, Grasp Lab, Philadelphia, PA 19104 USA.
FU ONR [N00014-09-1-1031, 10936907]
FX We would like to acknowledge the Joint Interagency Field Exploration
(JIFX) organizers at the Naval Postgraduate School who enabled us to
validate these algorithms in a flight test setting at their McMillan
Airfield, Camp Roberts, CA facility. Furthermore, we gratefully
acknowledge support from ONR grants N00014-09-1-1031 and 10936907.
NR 31
TC 2
Z9 2
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2153-0858
BN 978-1-4673-6358-7
J9 IEEE INT C INT ROBOT
PY 2013
BP 5750
EP 5757
PG 8
WC Computer Science, Artificial Intelligence; Computer Science,
Cybernetics; Robotics
SC Computer Science; Robotics
GA BA0HU
UT WOS:000331367405120
ER
PT J
AU Yoho, KD
Rietjens, S
Tatham, P
AF Yoho, Keenan D.
Rietjens, Sebastiaan
Tatham, Peter
TI Defence logistics: an important research field in need of researchers
SO INTERNATIONAL JOURNAL OF PHYSICAL DISTRIBUTION & LOGISTICS MANAGEMENT
LA English
DT Article
DE Defence logistics; Military logistics; Business logistics; Logistics;
Operations; Warfare; Defence sector
ID HUMANITARIAN LOGISTICS; SUPPLY NETWORK; MANAGEMENT
AB Purpose - The purpose of this paper is to provide an introduction to the special issue on defence logistics. To achieve this, an overview of the field of defence logistics is offered together with a discussion of the historical and contemporary issues that have confronted researchers and practitioners. Current research is described, and a research agenda for future work in the field is proposed.
Design/methodology/approach - The paper is based upon a conceptual discussion of defence logistics as it has been studied in the past and is being studied in the present, and a reflection on the ways in which past research can usefully inform future research agendas.
Findings - The paper discusses the current state of defence logistics research, and proposes a research agenda for future work based upon the anticipated characteristics of future combat operations.
Research limitations/implications - A future research agenda is proposed that is informed by recent transformations in the conduct of warfare, as well as through anticipated changes in the global strategic landscape. Comparisons are made between defence logistics operations and their commercial counterparts to illustrate where there may be opportunities for adaptation based on the underlying similarities.
Originality/value - This paper discusses the major threads and themes of defence logistics research as a discipline, highlights the changing landscape of conflict in the 21st century and provides a future research agenda for those working in the field.
C1 [Yoho, Keenan D.] Naval Postgrad Sch, Monterey, CA 93943 USA.
[Rietjens, Sebastiaan] Netherlands Def Acad, Fac Mil Sci, Breda, Netherlands.
[Tatham, Peter] Griffith Univ, Griffith Business Sch, Gold Coast, Australia.
RP Yoho, KD (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
EM kdyoho@nps.edu
RI Hu, Albert/E-1722-2016
NR 70
TC 2
Z9 2
U1 2
U2 11
PU EMERALD GROUP PUBLISHING LIMITED
PI BINGLEY
PA HOWARD HOUSE, WAGON LANE, BINGLEY BD16 1WA, W YORKSHIRE, ENGLAND
SN 0960-0035
EI 1758-664X
J9 INT J PHYS DISTR LOG
JI Int. J. Phys. Distrib. Logist. Manag.
PY 2013
VL 43
IS 2
SI SI
BP 80
EP 96
DI 10.1108/IJPDLM.03-2012.0079
PG 17
WC Management
SC Business & Economics
GA AC1PS
UT WOS:000332269100001
ER
PT J
AU Zhou, Z
Peng, Z
Xie, P
Cui, JH
Jiang, ZH
AF Zhou, Zhong
Peng, Zheng
Xie, Peng
Cui, Jun-Hong
Jiang, Zaihan
TI Exploring random access and handshaking techniques in underwater
wireless acoustic networks
SO EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING
LA English
DT Article
ID COLLISION-AVOIDANCE PROTOCOL; EFFICIENT MAC PROTOCOL; SENSOR NETWORKS;
RESERVATION; CHALLENGES
AB In this article, we study the medium access control (MAC) problem in underwater wireless acoustic networks. We explore the random access and handshaking (i.e., RTS/CTS) techniques in both single-channel and multi-channel network scenarios. We model and analyze these two approaches, and conduct extensive simulations to study their performance in various network conditions. Based on our results, we observe that the performance of both approaches are affected by many factors such as data rate, propagation delay and packet size. Our results show that the RTS/CTS approach is more suitable for dense networks with high date rate, whereas the random access approach is preferred in sparse networks with low data rate. Our results also demonstrate that multi-channel techniques can potentially help us combat the long delay feature of underwater acoustic channels. However, uncoordinated random channel access cannot fully exploit the advantages of the multi-channel network settings and it performs even worse than the single-channel random access protocol. Only with careful design and coordination such as multi-channel access with RTS/CTS handshaking process, can multi-channel MAC protocols greatly improve the system performance. We believe that this study will provide useful guidelines for efficient MAC design in underwater wireless acoustic networks.
C1 [Zhou, Zhong; Peng, Zheng; Xie, Peng; Cui, Jun-Hong] Univ Connecticut, Dept Comp Sci & Engn, Storrs, CT 06269 USA.
[Jiang, Zaihan] Naval Res Lab, Acoust Div, Washington, DC USA.
RP Zhou, Z (reprint author), Univ Connecticut, Dept Comp Sci & Engn, Storrs, CT 06269 USA.
EM zhz05002@engr.uconn.edu; zhenpeng@engr.uconn.edu; xp@engr.uconn.edu;
jcui@engr.uconn.edu; zaihan.jiang@nrl.navy.mil
RI Peng, Zheng/J-3629-2014
OI Peng, Zheng/0000-0001-9055-1436
NR 42
TC 1
Z9 1
U1 1
U2 5
PU SPRINGER INTERNATIONAL PUBLISHING AG
PI CHAM
PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND
SN 1687-1499
J9 EURASIP J WIREL COMM
JI EURASIP J. Wirel. Commun. Netw.
PY 2013
AR 95
DI 10.1186/1687-1499-2013-95
PG 15
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 175PD
UT WOS:000321241800001
ER
PT S
AU Willard, MA
Daniil, M
AF Willard, Matthew A.
Daniil, Maria
BE Buschow, KHJ
TI NANOCRYSTALLINE SOFT MAGNETIC ALLOYS TWO DECADES OF PROGRESS
SO HANDBOOK OF MAGNETIC MATERIALS, VOL 21
SE Handbook of Magnetic Materials
LA English
DT Article; Book Chapter
ID NB-SI-B; FE-ZR-B; ULTRAFINE GRAIN-STRUCTURE; FINEMET-TYPE ALLOYS; HIGH
SATURATION MAGNETIZATION; ANGLE NEUTRON-SCATTERING; FE73.5SI13.5B9NB3CU1
AMORPHOUS ALLOY; DIFFERENTIAL SCANNING CALORIMETRY; LOW-TEMPERATURE
MAGNETIZATION; HIGH-FREQUENCY APPLICATIONS
C1 [Willard, Matthew A.] US Naval Res Lab, Magnet Mat & Nanostruct Sect, Washington, DC USA.
[Willard, Matthew A.] Case Western Reserve Univ, Dept Mat Sci & Engn, Cleveland, OH 44106 USA.
[Daniil, Maria] George Washington Univ, Dept Phys, Washington, DC 20052 USA.
RP Willard, MA (reprint author), US Naval Res Lab, Magnet Mat & Nanostruct Sect, Washington, DC USA.
OI Willard, Matthew/0000-0001-5052-8012
NR 514
TC 13
Z9 13
U1 1
U2 4
PU ELSEVIER NORTH HOLLAND
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1567-2719
BN 978-0-444-59595-9; 978-0-444-59593-5
J9 HBK MAGN MAT
PY 2013
VL 21
BP 173
EP 342
DI 10.1016/B978-0-444-59593-5.00004-0
PG 170
WC Materials Science, Multidisciplinary; Physics, Condensed Matter
SC Materials Science; Physics
GA BA0AI
UT WOS:000330795400004
ER
PT J
AU Book, JW
Perkins, H
Wimbush, M
AF Book, Jeffrey W.
Perkins, Henry
Wimbush, Mark
TI Correction to "North Adriatic tides: observations, variational data
assimilation modeling, and linear tide dynamics"
SO GEOFIZIKA
LA English
DT Article
AB A precision/round-off error has been discovered in the tidal analysis routines used in the paper "North Adriatic tides: observations, variational data assimilation modeling, and linear tide dynamics" by J. W. Book, H. Perkins, and M. Wimbush (2009, Geofizika, 26, 115-143). Tidal elevation phases for 12 of the 15 stations are, on average, too low by 3.9 degrees for the diurnal constituents and 7.9 degrees for the semidiurnal constituents in Tabs. 4 and 5. These tables have been corrected and are republished here.
The error also had an effect on the input data used for the linear variational data assimilation model, and combined with a nearest neighbor interpolation scheme produced an approximate 15 minute forward shift in time for 6 of the 43 synthesized tidal records. The error produced final model solutions that had tidal elevation phases 3.5 degrees too high for M-2, 1.6 degrees too high for K-1, and similar matching phase shifts for other semidiurnal and diurnal constituents. The errors in the input data have been corrected, the interpolation scheme has been changed to a piecewise cubic spline method, and the model runs have all been redone.
The new model results suggest a minor change in optimal friction parameter, which in turn alters model Q factors and dissipation. However, the original finding that these values are not well determined by this methodology remains true. Model and observational results originally shown in Figs. 5-7 and Figs. 13-14 have slightly changed and are republished here. The main conclusions from the original work regarding Kelvin waves and TRW dynamics for the North Adriatic basin remain unaltered by these corrections.
C1 [Book, Jeffrey W.] Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
[Perkins, Henry] Univ Maine, Darling Marine Ctr, Walpole, ME 04573 USA.
[Wimbush, Mark] Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA.
RP Book, JW (reprint author), Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
EM book@nrlssc.navy.mil; mwimbush@mail.uri.edu
NR 3
TC 0
Z9 0
U1 2
U2 3
PU UNIV ZAGREB , ANDRIJA MOHOROVICIC GEOPHYS INST
PI ZAGREB
PA FAC SCIENCE, HORVATOVAC BB, ZAGREB, 10000, CROATIA
SN 0352-3659
EI 1846-6346
J9 GEOFIZIKA
JI Geofizika
PY 2013
VL 30
IS 2
BP 191
EP 200
PG 10
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA AA6PF
UT WOS:000331219600006
ER
PT J
AU Koehler, AD
Anderson, TJ
Weaver, BD
Tadjer, MJ
Hobart, KD
Kub, FJ
AF Koehler, Andrew D.
Anderson, Travis J.
Weaver, Bradley D.
Tadjer, Marko J.
Hobart, Karl D.
Kub, Francis J.
GP IEEE
TI Degradation of Dynamic ON-Resistance of AlGaN/GaN HEMTs Under Proton
Irradiation
SO 2013 1ST IEEE WORKSHOP ON WIDE BANDGAP POWER DEVICES AND APPLICATIONS
(WIPDA)
LA English
DT Proceedings Paper
CT 1st Annual IEEE Workshop on Wide Bandgap Power Devices and Applications
(WiPDA)
CY OCT 27-29, 2013
CL Columbus, OH
SP IEEE, Power Sources Manufacturers Assoc, IEEE Power Elect Soc, Electron Devices Soc
ID ELECTRON-MOBILITY TRANSISTORS
AB SiNx-passivated AlGaN/GaN high electron mobility transistors (HEMTs) on Si substrates demonstrated high tolerance to 2 MeV proton irradiation, up to a dose of 6 x 10(14) cm(-2). Radiation-induced changes were observed in Hall mobility, two-dimensional electron gas sheet carrier density, sheet resistance, ON-resistance, transconductance, threshold voltage, and dynamic ON-resistance. Dynamic ON-resistance was measured by pulsing to ON-state from OFF-state quiescent points with drain voltages up to 20 V. The dynamic ON-resistance measured from high OFF-state quiescent voltages was more sensitive to irradiation than the DC and Hall parameters, making the dynamic ON-resistance measurement useful in characterizing radiation-induced degradation.
C1 [Koehler, Andrew D.; Anderson, Travis J.; Weaver, Bradley D.; Tadjer, Marko J.; Hobart, Karl D.; Kub, Francis J.] US Naval Res Lab, Washington, DC 20375 USA.
RP Koehler, AD (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
EM andrew.koehler@nrl.navy.mil
NR 7
TC 4
Z9 4
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1194-3
PY 2013
BP 112
EP 114
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA BA0EW
UT WOS:000331112200026
ER
PT B
AU Garfinkel, SL
Beebe, N
Liu, LS
Maasberg, M
AF Garfinkel, Simson L.
Beebe, Nicole
Liu, Lishu
Maasberg, Michele
GP IEEE
TI Detecting Threatening Insiders with Lightweight Media Forensics
SO 2013 IEEE INTERNATIONAL CONFERENCE ON TECHNOLOGIES FOR HOMELAND SECURITY
(HST)
LA English
DT Proceedings Paper
CT 13th IEEE International Conference on Technologies for Homeland Security
(HST)
CY NOV 12-14, 2013
CL Waltham, MA
SP IEEE, IEEE USA, IEEE Biometr Council, Massport, Govt Technol and Serv Coalit, Boston Prod Management Assoc, Massachusetts High Technol Council, Market Res Media, IEEE Women Engn, Domest Preparedness Com, DPJ Weekly Brief, DomPrep Journal, IEEE Boston Sect
ID ALGORITHM; ROBUST
AB This research uses machine learning and outlier analysis to detect potentially hostile insiders through the automated analysis of stored data on cell phones, laptops, and desktop computers belonging to members of an organization. Whereas other systems look for specific signatures associated with hostile insider activity, our system is based on the creation of a "storage profile" for each user and then an automated analysis of all the storage profiles in the organization, with the purpose of finding storage outliers. Our hypothesis is that malicious insiders will have specific data and concentrations of data that differ from their colleagues and coworkers. By exploiting these differences, we can identify potentially hostile insiders.
Our system is based on a combination of existing open source computer forensic tools and datamining algorithms. We modify these tools to perform a "lightweight" analysis based on statistical sampling over time. In this, our approach is both efficient and privacy sensitive. As a result, we can detect not just individuals that differ from their co-workers, but also insiders that differ from their historic norms. Accordingly, we should be able to detect insiders that have been "turned" by events or outside organizations. We should also be able to detect insider accounts that have been taken over by outsiders.
Our project, now in its first year, is a three-year project funded by the Department of Homeland Security, Science and Technology Directorate, Cyber Security Division. In this paper we describe the underlying approach and demonstrate how the storage profile is created and collected using specially modified open source tools. We also present the results of running these tools on a 500GB corpus of simulated insider threat data created by the Naval Postgraduate School in 2008 under grant from the National Science Foundation.
C1 [Garfinkel, Simson L.] Naval Postgrad Sch, Dept Comp Sci, Arlington, VA 22203 USA.
[Beebe, Nicole; Liu, Lishu; Maasberg, Michele] Univ Texas San Antonio, Dept Informat Syst & Cyber Secur, San Antonio, TX 78249 USA.
RP Garfinkel, SL (reprint author), Naval Postgrad Sch, Dept Comp Sci, Arlington, VA 22203 USA.
EM slgarfin@nps.edu; Nicole.Beebe@utsa.edu; Lishu.Liu@utsa.edu;
Michele.Maasberg@utsa.edu
FU DHS ST [BAA 11-02-TTA 04-0108-I]
FX The views expressed in this document are those of the authors and do not
reflect the official policy or position of the Department of Defense,
the Department of Homeland Security, or the U.S. Government. This
research was funded in part under DHS S&T Proposal BAA 11-02-TTA
04-0108-I
NR 33
TC 1
Z9 1
U1 1
U2 7
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1535-4; 978-1-4799-3963-3
PY 2013
BP 86
EP 92
PG 7
WC Computer Science, Interdisciplinary Applications; Engineering,
Electrical & Electronic; Operations Research & Management Science
SC Computer Science; Engineering; Operations Research & Management Science
GA BA0AD
UT WOS:000330768500016
ER
PT B
AU Hutcheson, AL
Phlips, BF
Wulf, EA
Mitchell, LJ
Johnson, WN
Leas, BE
AF Hutcheson, Anthony L.
Phlips, Bernard F.
Wulf, Eric A.
Mitchell, Lee J.
Johnson, W. Neil
Leas, Byron E.
GP IEEE
TI Maritime Detection of Radiological/Nuclear Threats with Hybrid Imaging
System
SO 2013 IEEE INTERNATIONAL CONFERENCE ON TECHNOLOGIES FOR HOMELAND SECURITY
(HST)
LA English
DT Proceedings Paper
CT 13th IEEE International Conference on Technologies for Homeland Security
(HST)
CY NOV 12-14, 2013
CL Waltham, MA
SP IEEE, IEEE USA, IEEE Biometr Council, Massport, Govt Technol and Serv Coalit, Boston Prod Management Assoc, Massachusetts High Technol Council, Market Res Media, IEEE Women Engn, Domest Preparedness Com, DPJ Weekly Brief, DomPrep Journal, IEEE Boston Sect
DE special nuclear materials; stand-off detection; coded aperture; gamma
detection; neutron detection; maritime detection
AB Improved detection of weapons of mass destruction is one of the Science and Technology priorities of the Secretary of Defense for Fiscal Years 2013-2017. Unfortunately, the remote detection of special nuclear materials is difficult because the materials are not very radioactive, the radiation signatures decrease rapidly with distance, and faint sources of radiation can be obscured by naturally occurring and man-made radioactive sources. The Radiation Detection Section of the High Energy Space Environment Branch of the U. S. Naval Research Laboratory has developed the SuperMISTI stand-off detection system for maritime environments. The instrument was deployed at Norfolk Naval Station in July 2012 as part of the Manta technology demonstration to determine the on-water performance of the system. Detailed descriptions of the SuperMISTI system and its operation are given.
C1 [Hutcheson, Anthony L.; Phlips, Bernard F.; Wulf, Eric A.; Mitchell, Lee J.; Johnson, W. Neil] US Naval Res Lab, High Energy Space Environm Branch, Washington, DC 20375 USA.
[Leas, Byron E.] SRA Int Inc, Fairfax, VA USA.
RP Hutcheson, AL (reprint author), US Naval Res Lab, High Energy Space Environm Branch, Washington, DC 20375 USA.
RI Johnson, Neil/G-3309-2014
FU Maritime Weapons of Mass Destruction Detection Program of the Office of
Naval Research
FX The authors of this work gratefully acknowledge the funding from the
Maritime Weapons of Mass Destruction Detection Program of the Office of
Naval Research.
NR 4
TC 3
Z9 3
U1 1
U2 5
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4799-1535-4; 978-1-4799-3963-3
PY 2013
BP 360
EP 363
PG 4
WC Computer Science, Interdisciplinary Applications; Engineering,
Electrical & Electronic; Operations Research & Management Science
SC Computer Science; Engineering; Operations Research & Management Science
GA BA0AD
UT WOS:000330768500059
ER
PT J
AU Carpenter, RJ
Refugio, ON
Adams, N
O'Brien, KP
Johnson, MD
Groff, HL
Maves, RC
Bavaro, MF
Crum-Cianflone, NF
AF Carpenter, Robert J.
Refugio, Oliver N.
Adams, Nehkonti
O'Brien, Kevin P.
Johnson, Mark D.
Groff, Harold L.
Maves, Ryan C.
Bavaro, Mary F.
Crum-Cianflone, Nancy F.
TI Prevalence and factors associated with asymptomatic gonococcal and
chlamydial infection among US Navy and Marine Corps men infected with
the HIV: a cohort study
SO BMJ OPEN
LA English
DT Article
ID SEXUALLY-TRANSMITTED-DISEASES; MALE ARMY RECRUITS; SAN-FRANCISCO;
UNITED-STATES; PHARYNGEAL CHLAMYDIA; PRIMARY-CARE; GONORRHEA; SEX;
EPIDEMIOLOGY; HEALTH
AB Objectives: Neisseria gonorrhoeae (GC) and Chlamydia trachomatis (CT) can facilitate transmission of HIV. Men who have sex with men (MSM) may harbour infections at genital and extragenital sites. Data regarding extragenital GC and CT infections in military populations are lacking. We examined the prevalence and factors associated with asymptomatic GC and CT infection among this category of HIV-infected military personnel.
Design: Cross-sectional cohort study (pilot).
Setting: Infectious diseases clinic at a single military treatment facility in San Diego, CA.
Participants: Ninety-nine HIV-positive men were evaluated-79% men who had sex with men, mean age 31 years, 36% black and 33% married. Inclusion criteria: male, HIV-infected, Department of Defense beneficiary. Exclusion criteria: any symptom related to the urethra, pharynx or rectum.
Primary outcome measures: GC and CT screening results.
Results: Twenty-four per cent were infected with either GC or CT. Rectal swabs were positive in 18% for CT and 3% for GC; pharynx swabs were positive in 8% for GC and 2% for CT. Only one infection was detected in the urine (GC). Anal sex (p=0.04), male partner (OR 7.02, p=0.04) and sex at least once weekly (OR 3.28, p=0.04) were associated with infection. Associated demographics included age <35 years (OR 6.27, p=0.02), non-Caucasian ethnicity (p=0.03), <3 years since HIV diagnosis (OR 2.75, p=0.04) and previous sexually transmitted infection (STI) (OR 5.10, p=0.001).
Conclusions: We found a high prevalence of extragenital GC/CT infection among HIV-infected military men. Only one infection was detected in the urine, signalling the need for aggressive three-site screening of MSM. Clinicians should be aware of the high prevalence in order to enhance health through comprehensive STI screening practices.
C1 [Carpenter, Robert J.; Adams, Nehkonti; O'Brien, Kevin P.; Johnson, Mark D.; Groff, Harold L.; Maves, Ryan C.; Bavaro, Mary F.; Crum-Cianflone, Nancy F.] Naval Med Ctr San Diego, Div Infect Dis, San Diego, CA 92134 USA.
[Refugio, Oliver N.; Crum-Cianflone, Nancy F.] San Diego State Univ, Grad Sch Publ Hlth, San Diego, CA 92182 USA.
[Crum-Cianflone, Nancy F.] Naval Hlth Res Ctr, San Diego, CA USA.
RP Carpenter, RJ (reprint author), Naval Med Ctr San Diego, Div Infect Dis, San Diego, CA 92134 USA.
EM rjc311@gmail.com
OI Carpenter, Robert/0000-0002-6546-6122
NR 33
TC 6
Z9 6
U1 0
U2 0
PU BMJ PUBLISHING GROUP
PI LONDON
PA BRITISH MED ASSOC HOUSE, TAVISTOCK SQUARE, LONDON WC1H 9JR, ENGLAND
SN 2044-6055
J9 BMJ OPEN
JI BMJ Open
PY 2013
VL 3
IS 5
AR e002775
DI 10.1136/bmjopen-2013-002775
PG 7
WC Medicine, General & Internal
SC General & Internal Medicine
GA 301NF
UT WOS:000330538300077
ER
PT J
AU Levush, B
Abe, D
Pasour, J
Cooke, S
Wood, F
Larsen, P
Nguyen, K
Wright, E
Pershing, D
Balkcum, A
AF Levush, Baruch
Abe, David
Pasour, John
Cooke, Simon
Wood, Frank
Larsen, Paul
Nguyen, K.
Wright, E.
Pershing, D.
Balkcum, Adam
GP IEEE
TI Sheet Electron Beam Millimeter-Wave Amplifiers at the Naval Research
Laboratory
SO 2013 IEEE INTERNATIONAL CONFERENCE ON MICROWAVES, COMMUNICATIONS,
ANTENNAS AND ELECTRONICS SYSTEMS (IEEE COMCAS 2013)
LA English
DT Proceedings Paper
CT IEEE International Conference on Microwaves, Communications, Antennas
and Electronic Systems (COMCAS)
CY OCT 21-23, 2013
CL Tel Aviv, ISRAEL
SP IEEE
DE Vacuum electronics; sheet electron beam; traveling-wave tube; helix TWT;
extended interaction klystron; coupled-cavity TWT
AB To meet the need to transmit increasingly massive volumes of data, both the defense and commercial sectors are turning to higher operational frequencies to take advantage of larger signal bandwidths while concurrently requiring increased amplifier power to achieve the necessary signal-to-noise ratios over large transmission distances. In response to these needs, the last decade has seen a leap in performance of a variety of millimeter-wave devices. The Naval Research Laboratory (NRL) is the principal U.S. Department of Defense R&D center focused on the development of the science and technology behind new millimeter-wave high power solid-state and vacuum electronic devices. Selected examples of NRLs research projects are described with an emphasis on high power millimeter-wave vacuum electronic devices.
C1 [Levush, Baruch; Abe, David; Pasour, John; Cooke, Simon; Wood, Frank; Larsen, Paul] Naval Res Lab, Washington, DC 20375 USA.
[Nguyen, K.; Wright, E.; Pershing, D.] Beam Wave Res Inc, Bethesda, MD 20814 USA.
[Balkcum, Adam] Commun Power Ind Inc, Palo Alto, CA 94304 USA.
RP Levush, B (reprint author), Naval Res Lab, Washington, DC 20375 USA.
FU U.S. Office of Naval Research
FX This work was supported by the U.S. Office of Naval Research.
NR 13
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5756-2
PY 2013
PG 5
WC Engineering, Electrical & Electronic; Physics, Applied;
Telecommunications
SC Engineering; Physics; Telecommunications
GA BJT67
UT WOS:000330240700008
ER
PT S
AU Dillner, DK
Ferrante, RF
Fitzgerald, JP
Schroeder, MJ
AF Dillner, Debra K.
Ferrante, Robert F.
Fitzgerald, Jeffrey P.
Schroeder, Maria J.
BE Chapp, TW
Benvenuto, MA
TI Global Curriculum Changes To Facilitate Undergraduate Research
Experiences
SO DEVELOPING AND MAINTAINING A SUCCESSFUL UNDERGRADUATE RESEARCH PROGRAM
SE ACS Symposium Series
LA English
DT Proceedings Paper
CT 245th National Spring Meeting of the American-Chemical-Society (ACS)
CY APR 07-11, 2013
CL New Orleans, LA
SP Amer Chem Soc, Div Chem Educ
ID LABORATORY PROGRAM; CHEMISTRY; STUDENTS; BENEFITS
AB Participation of undergraduates in research has increased over the years in response to initiatives from various professional societies and educational organizations. Undergraduate research provides a unique learning experience benefitting the student, faculty mentor, and institution. At the U.S. Naval Academy, we completely redesigned our chemistry majors' curriculum to require senior projects of all of our majors. The restructured laboratory curriculum is based on four semesters of integrated laboratory, a sequence organized around broad themes in chemistry such as separation/purification, synthesis, qualitative analysis, and quantitative analysis rather than traditional subdisciplines within chemistry. The integrated laboratory curriculum has facilitated the inclusion of a research or capstone experience for all of our chemistry majors. Here we report the development of our integrated laboratory sequence, the two tracks for our senior students to participate in research/capstone projects, challenges with implementation, outcomes, and advice to other institutions. These changes required significant effort in redesigning our curriculum and the acceptance of undergraduate research as a culminating experience worthy of faculty and administrative support. However, we have felt it was worth our effort as our number of majors has increased, students seem dramatically more satisfied with the major, interactions between students and faculty have increased, and research productivity seems to have been enhanced.
C1 [Dillner, Debra K.; Ferrante, Robert F.; Fitzgerald, Jeffrey P.; Schroeder, Maria J.] US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
RP Dillner, DK (reprint author), US Naval Acad, Dept Chem, Annapolis, MD 21402 USA.
EM schroede@usna.edu
NR 27
TC 0
Z9 0
U1 2
U2 6
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 SIXTEENTH ST NW, WASHINGTON, DC 20036 USA
SN 0097-6156
BN 978-0-8412-2928-0
J9 ACS SYM SER
JI ACS Symp. Ser.
PY 2013
VL 1156
BP 163
EP 186
PG 24
WC Chemistry, Multidisciplinary; Education, Scientific Disciplines
SC Chemistry; Education & Educational Research
GA BJU38
UT WOS:000330550400011
ER
PT B
AU Garth, TS
AF Garth, Todd S.
BE Rocha, C
TI Pariahs in the Wilderness: Abject Masculinity in Horacio Quiroga
SO MODERN ARGENTINE MASCULINITIES
LA English
DT Article; Book Chapter
C1 US Naval Acad, Annapolis, MD 21402 USA.
RP Garth, TS (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 26
TC 0
Z9 0
U1 0
U2 0
PU INTELLECT LTD
PI OXFORD
PA KENNETT HOUSE, SUITE 2 108/110 LONDON RD, OXFORD OX3 9AW, ENGLAND
BN 978-1-78320-083-2; 978-1-78320-015-3
PY 2013
BP 89
EP 107
PG 19
WC Cultural Studies
SC Cultural Studies
GA BJP85
UT WOS:000329524600006
ER
PT S
AU Park, D
Han, DK
Ko, H
AF Park, Dubok
Han, David K.
Ko, Hanseok
GP IEEE
TI SINGLE IMAGE HAZE REMOVAL WITH WLS-BASED EDGE-PRESERVING SMOOTHING
FILTER
SO 2013 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL
PROCESSING (ICASSP)
SE International Conference on Acoustics Speech and Signal Processing
ICASSP
LA English
DT Proceedings Paper
CT IEEE International Conference on Acoustics, Speech, and Signal
Processing (ICASSP)
CY MAY 26-31, 2013
CL Vancouver, CANADA
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Signal Proc Soc
DE Air-light; dehazing; image smoothing; multi-scale tone manipulation;
transmission map
ID MODEL
AB Images captured under hazy conditions have low contrast and poor color. This is primarily due to air-light which degrades image quality according to the transmission map. The approach to enhance these hazy images we introduce here is based on the 'Dark-Channel Prior' method with image refinement by the 'Weighted Least Square' based edge-preserving smoothing. Local contrast is further enhanced by multi-scale tone manipulation. The proposed method improves the contrast, color and detail for the entire image domain effectively. In the experiment, we compare the proposed method with conventional methods to validate performance.
C1 [Park, Dubok] Korea Univ, Dept Visual Informat Proc, Seoul, South Korea.
[Han, David K.] Off Naval Res, Ocean Engn & Marine Syst Team, Arlington, VA 22217 USA.
[Ko, Hanseok] Korea Univ, Sch Elect Engn, Seoul, South Korea.
RP Park, D (reprint author), Korea Univ, Dept Visual Informat Proc, Seoul, South Korea.
RI Xiongfei, Zhao/G-7690-2015
FU Seoul RBD Program [WR080951]
FX This research was supported by Seoul R&BD Program(WR080951)
NR 21
TC 8
Z9 8
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1520-6149
BN 978-1-4799-0356-6
J9 INT CONF ACOUST SPEE
PY 2013
BP 2469
EP 2473
PG 5
WC Acoustics; Engineering, Electrical & Electronic
SC Acoustics; Engineering
GA BJQ19
UT WOS:000329611502128
ER
PT S
AU Nieh, JY
Romero, RA
AF Nieh, Jo-Yen
Romero, Ric A.
GP IEEE
TI Ambiguity Function and Detection Probability Considerations for Matched
Waveform Design
SO 2013 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL
PROCESSING (ICASSP)
SE International Conference on Acoustics Speech and Signal Processing
ICASSP
LA English
DT Proceedings Paper
CT IEEE International Conference on Acoustics, Speech, and Signal
Processing (ICASSP)
CY MAY 26-31, 2013
CL Vancouver, CANADA
SP Inst Elect & Elect Engineers, Inst Elect & Elect Engineers Signal Proc Soc
DE waveform design; range resolution; ambiguity function; eigenwaveform
AB In this paper we investigate the range resolution of transmit waveform designs matched to extended targets. We specifically look at eigenwaveform design which is also known as SNR-based illumination waveform design. To that end, we evaluate some ambiguity functions of radar systems employing eigenwaveforms. We consider some example targets and plot the corresponding ambiguity functions. Unlike traditional waveforms whose responses totally dictate the shape of the ambiguity function, both matched illumination waveform and extended target response contribute to the shape of the ambiguity function. In other words, range and Doppler resolutions are not just functions of the transmit waveform but of the target response itself which makes for interesting ambiguity functions. Moreover, we also evaluate the detection probability of eigenwaveforms matched to extended targets and show the performance improvement over wideband pulsed waveform designs.
C1 [Nieh, Jo-Yen; Romero, Ric A.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
RP Nieh, JY (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
EM jnieh@nps.edu; rnromero@nps.edu
NR 5
TC 3
Z9 3
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1520-6149
BN 978-1-4799-0356-6
J9 INT CONF ACOUST SPEE
PY 2013
BP 4280
EP 4284
PG 5
WC Acoustics; Engineering, Electrical & Electronic
SC Acoustics; Engineering
GA BJQ19
UT WOS:000329611504089
ER
PT S
AU Kanaev, AV
Miller, CW
Seanor, CJ
Murray-Krezan, J
AF Kanaev, Andrey V.
Miller, Christopher W.
Seanor, Collin J.
Murray-Krezan, Jeremy
BE Henry, DJ
Lange, DA
VonBerg, DL
Rajan, SD
Walls, TJ
Young, DL
TI Situational awareness investigation using tracking and enhancement of
imagery with highly dynamic lighting conditions
SO AIRBORNE INTELLIGENCE, SURVEILLANCE, RECONNAISSANCE (ISR) SYSTEMS AND
APPLICATIONS X
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Airborne Intelligence, Surveillance, Reconnaissance (ISR)
Systems and Applications X
CY MAY 01-02, 2013
CL Baltimore, MD
SP SPIE
DE Optical Flow; Super-Resolution; image enhancement; computational imaging
ID OPTIC FLOW METHODS
AB We report on the application of Optical Flow (OF) and state-of-the art multi-frame Super-Resolution (SR) algorithms to imagery that models space objects (SOs). Specifically, we demonstrate the ability to track SOs through sequences consisting of tens of images using different OF algorithms and show dependence of the tracking accuracy on illumination condition changes and on the values of pixel displacements between neighboring images. Additionally, we demonstrate spatial acuity enhancement of the pixel limited resolution of SO motion imagery by applying a novel SR algorithm accounting for OF errors.
C1 [Kanaev, Andrey V.; Miller, Christopher W.] US Naval Res Lab, 4550 Overlook Ave, Washington, DC 20032 USA.
[Seanor, Collin J.; Murray-Krezan, Jeremy] Air Force Res Lab, Kirtland AFB, NM 87117 USA.
RP Kanaev, AV (reprint author), US Naval Res Lab, 4550 Overlook Ave, Washington, DC 20032 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 978-0-8194-9504-4
J9 PROC SPIE
PY 2013
VL 8713
AR UNSP 87130S
DI 10.1117/12.2016393
PG 22
WC Engineering, Electrical & Electronic; Optics; Telecommunications
SC Engineering; Optics; Telecommunications
GA BJQ20
UT WOS:000329624400023
ER
PT J
AU Barrett, BS
Longoria, MIE
AF Barrett, B. S.
Esquivel Longoria, M. I.
TI Variability of precipitation and temperature in Guanajuato, Mexico
SO ATMOSFERA
LA English
DT Article
DE Climatology of Guanajuato; rainfall; temperature; intraseasonal
variability
ID AMERICAN REGIONAL REANALYSIS; MADDEN-JULIAN OSCILLATION; SOUTHERN
OSCILLATION; MODULATION; RAINFALL; CIRCULATION; PATTERNS; MONSOON;
SEASON; INDEX
AB Variability of precipitation and temperature was examined on multiple time scales using data from five surface observing stations in the center of Guanajuato state, Mexico, as well as gridded data from the North American Regional Reanalysis (NARR). Frequency of days with total precipitation exceeding the 90th percentile was not found to have increased from 1979-2011. However, frequency of days with maximum temperature above the 90th percentile more than doubled from 1979-2011, and frequency of days with maximum temperature below the 10th percentile decreased by almost half over the same period, an important result given the scarcity of water resources for the agriculture-based economy. Precipitation within the growing season was found to vary by phase of the Madden-Julian oscillation (MJO), with MJO phases 1-3 associated with above-normal rainfall and MJO phases 4-7 with normal or below normal rainfall. Composite anomalies of precipitation, surface pressure, surface wind, surface temperature, and 700 mbar height showed that days with rainfall in Guanajuato were associated with on-shore, upslope flow, reduced surface temperatures, and reduced potential evaporation. Composites for MJO phases 1-3 and 8 agreed well with these anomalies. Similarly, composite anomalies for days without rainfall in Guanajuato showed warm surface temperatures, broad anticyclonic flow over much of northern Mexico, and enhanced potential evaporation. Composites for MJO phases 4-7 agreed well with these anomalies.
C1 [Barrett, B. S.] US Naval Acad, Dept Oceanog, Annapolis, MD 21402 USA.
[Esquivel Longoria, M. I.] Univ Guanajuato, Ctr Ciencias Atmosfer, Guanajuato, Mexico.
RP Barrett, BS (reprint author), US Naval Acad, Dept Oceanog, 572C Holloway Rd, Annapolis, MD 21402 USA.
EM bbarrett@usna.edu
FU U.S. Naval Academy Research Council
FX The authors would like to thank the Servicio Meteorologico Nacional for
providing the CLICOM data, as well as two anonymous reviewers for
helpful comments to improve the manuscript. Partial support for this
work came from a grant from the U.S. Naval Academy Research Council.
NR 31
TC 1
Z9 1
U1 0
U2 4
PU CENTRO CIENCIAS ATMOSFERA UNAM
PI MEXICO CITY
PA CIRCUITO EXTERIOR, MEXICO CITY CU 04510, MEXICO
SN 0187-6236
J9 ATMOSFERA
JI Atmosfera
PY 2013
VL 26
IS 4
BP 521
EP 536
PG 16
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 293PI
UT WOS:000329984500007
ER
PT J
AU Persing, J
Montgomery, MT
McWilliams, JC
Smith, RK
AF Persing, J.
Montgomery, M. T.
McWilliams, J. C.
Smith, R. K.
TI Asymmetric and axisymmetric dynamics of tropical cyclones
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID VORTEX ROSSBY-WAVES; HURRICANE BOUNDARY-LAYER; SURFACE EXCHANGE
COEFFICIENTS; HIGH-RESOLUTION SIMULATIONS; RAPIDLY ROTATING VORTICES;
SEA INTERACTION THEORY; IN-SITU OBSERVATIONS; PART II; POTENTIAL
VORTICITY; SPIRAL BANDS
AB We present the results of idealized numerical experiments to examine the difference between tropical cyclone evolution in three-dimensional (3-D) and axisymmetric (AX) model configurations. We focus on the prototype problem for intensification, which considers the evolution of an initially unsaturated AX vortex in gradient-wind balance on an f plane. Consistent with findings of previous work, the mature intensity in the 3-D model is reduced relative to that in the AX model. In contrast with previous interpretations invoking barotropic instability and related horizontal mixing processes as a mechanism detrimental to the spin-up process, the results indicate that 3-D eddy processes associated with vortical plume structures can assist the intensification process by contributing to a radial contraction of the maximum tangential velocity and to a vertical extension of tangential winds through the depth of the troposphere. These plumes contribute significantly also to the azimuthally averaged heating rate and the corresponding azimuthal-mean overturning circulation.
The comparisons show that the resolved 3-D eddy momentum fluxes above the boundary layer exhibit counter-gradient characteristics during a key spin-up period, and more generally are not solely diffusive. The effects of these eddies are thus not properly represented by the subgrid-scale parameterizations in the AX configuration. The resolved eddy fluxes act to support the contraction and intensification of the maximum tangential winds. The comparisons indicate fundamental differences between convective organization in the 3-D and AX configurations for meteorologically relevant forecast timescales. While the radial and vertical gradients of the system-scale angular rotation provide a hostile environment for deep convection in the 3-D model, with a corresponding tendency to strain the convective elements in the tangential direction, deep convection in the AX model does not suffer this tendency. Also, since during the 3-D intensification process the convection has not yet organized into annular rings, the azimuthally averaged heating rate and radial gradient thereof is considerably less than that in the AX model. This lack of organization results broadly in a slower intensification rate in the 3-D model and leads ultimately to a weaker mature vortex after 12 days of model integration. While azimuthal mean heating rates in the 3-D model are weaker than those in the AX model, local heating rates in the 3-D model exceed those in the AX model and at times the vortex in the 3-D model intensifies more rapidly than AX. Analyses of the 3-D model output do not support a recent hypothesis concerning the key role of small-scale vertical mixing processes in the upper-tropospheric outflow in controlling the intensification process.
In the 3-D model, surface drag plays a particularly important role in the intensification process for the prototype intensification problem on meteorologically relevant timescales by helping foster the organization of convection in azimuth. There is a radical difference in the behaviour of the 3-D and AX simulations when the surface drag is reduced or increased from realistic values. Borrowing from ideas developed in a recent paper, we give a partial explanation for this difference in behaviour.
Our results provide new qualitative and quantitative insight into the differences between the asymmetric and symmetric dynamics of tropical cyclones and would appear to have important consequences for the formulation of a fluid dynamical theory of tropical cyclone intensification and mature intensity. In particular, the results point to some fundamental limitations of strict axisymmetric theory and modelling for representing the azimuthally averaged behaviour of tropical cyclones in three dimensions.
C1 [Persing, J.; Montgomery, M. T.] Naval Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA.
[McWilliams, J. C.] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA.
[Smith, R. K.] Univ Munich, Inst Meteorol, D-80539 Munich, Germany.
RP Montgomery, MT (reprint author), Naval Postgrad Sch, Dept Meteorol, Monterey, CA 93943 USA.
EM mtmontgo@nps.edu
FU NSF [ATM-0733380]; U.S. Office of Naval Research Grant
[N00014-03-1-0185]
FX MTM and JP acknowledge financial support from NSF ATM-0733380 and the
U.S. Office of Naval Research Grant No. N00014-03-1-0185. We wish to
acknowledge also the computational resources of M. Kirby for
supplemental simulations.
NR 125
TC 28
Z9 29
U1 1
U2 20
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1680-7316
EI 1680-7324
J9 ATMOS CHEM PHYS
JI Atmos. Chem. Phys.
PY 2013
VL 13
IS 24
BP 12299
EP 12341
DI 10.5194/acp-13-12299-2013
PG 43
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 292VF
UT WOS:000329930000009
ER
PT B
AU Pang, VO
Han, PP
Pang, JM
AF Pang, Valerie Ooka
Han, Peggy P.
Pang, Jennifer M.
BE Endo, R
Rong, XL
TI ASIAN AMERICAN AND PACIFIC ISLANDER STUDENTS Third Graders and the
Achievement Gap
SO EDUCATION ASIAN AMERICANS: ACHIEVEMENT, SCHOOLING, AND IDENTITIES
SE Research on the Education of Asian and Pacific Americans
LA English
DT Article; Book Chapter
ID MODEL MINORITY; PERFORMANCE; EDUCATION; BEHAVIOR; CHINESE; FAMILY
AB This chapter extends research on the achievement gap found in Asian American and Pacific Islander (AAPI) seventh graders from California (Pang, Han, & Pang, 2011) by examining the reading and math performance of over 316,600 California AAPI third graders. As with the seventh grade population, we found achievement gap differences between the AAPI third graders and their White peers. Another similarity was significant differences across the 13 AAPI ethnic groups in reading and math performance. However, there was less variability in performance among the AAPI ethnic groups than for the seventh graders. Comparisons of the third grade and seventh grade results also suggest that some AAPI ethnic groups may be losing ground academically relative to Whites or other AAPI groups as they progress through school. These findings reveal that for AAPI students the achievement gap is an equity issue and needs to be addressed in the primary grades.
C1 [Pang, Valerie Ooka] San Diego State Univ, Sch Teacher Educ, San Diego, CA 92182 USA.
[Pang, Valerie Ooka] Brown Univ, Annenberg Inst, Providence, RI 02912 USA.
[Han, Peggy P.] Naval Hlth Res Ctr, Dept Med Modeling & Informat Syst, San Diego, CA USA.
[Pang, Jennifer M.] Northwest Assoc Biomed Res, Seattle, WA USA.
[Pang, Jennifer M.] Seattle BioMed, Sci Outreach Educ Programs, BioQuest Acad, Seattle, WA USA.
[Pang, Jennifer M.] Fred Hutchinson Canc Res Ctr, Seattle, WA USA.
[Pang, Jennifer M.] Seattles Expanding Your Horizons, Seattle, WA USA.
RP Pang, VO (reprint author), San Diego State Univ, Sch Teacher Educ, San Diego, CA 92182 USA.
NR 44
TC 1
Z9 1
U1 1
U2 2
PU INFORMATION AGE PUBLISHING-IAP
PI CHARLOTTE
PA PO BOX 79049, CHARLOTTE, NC 28271-7047 USA
BN 978-1-62396-213-5
J9 RES EDUC ASIAN PAC
PY 2013
BP 29
EP 48
PG 20
WC Education & Educational Research; Ethnic Studies
SC Education & Educational Research; Ethnic Studies
GA BJL39
UT WOS:000328865800003
ER
PT S
AU Stahlbush, RE
Mahadik, A
AF Stahlbush, R. E.
Mahadik, A.
BE Shenai, K
Dudley, M
Bakowski, M
Ohtani, N
TI Unexpected Sources of Basal Plane Dislocations in 4H-SiC Epitaxy
SO GALLIUM NITRIDE AND SILICON CARBIDE POWER TECHNOLOGIES 3
SE ECS Transactions
LA English
DT Proceedings Paper
CT 3rd Symposium on Gallium Nitride (GaN) and Silicon Carbide (SiC) Power
Technologies as part of the Fall Meeting of the Electrochemical-Society
(ECS)
CY OCT 28-31, 2013
CL San Francisco, CA
SP Electrochem Soc, Electrochem Soc, Elect & Photon Div, Electrochem Soc, Dielectr Sci & Technol Div, US Natl Sci Fdn, IEEE Power Elect Soc
ID SILICON-CARBIDE EPITAXY; STACKING-FAULTS; PIN DIODES; GROWTH; EPILAYERS;
DENSITY
AB The suppression of degradation inducing basal plane dislocations (BPDs) in the critical drift layer of SiC power devices has occurred mainly by preventing BPDs in the substrate from propagating into the drift layer. As optimized epitaxial growth has produced drift layers free of BPDs over a large fraction of the wafer, other sources of BPDs have become important. Two alternate sources are discussed. The first is epitaxial inclusions, which mainly consist of grossly misoriented 4H-SiC. The local stress field around the inclusion introduces a cluster of BPDs. In low-BPD epitaxy, the outermost BPDs can glide centimeters forming half-loop arrays that have BPD segments along their whole length. The second source of BPDs not normally considered is BPDs that are converted to threading edge dislocation before reaching the drift layer. Experiments suggest that for high current levels and/or over time, device degradation is possible.
C1 [Stahlbush, R. E.] Naval Res Lab, Power Elect Branch, Washington, DC 20375 USA.
[Mahadik, A.] Naval Res Lab, Solid State Dev Branch, Washington, DC 20375 USA.
RP Stahlbush, RE (reprint author), Naval Res Lab, Power Elect Branch, Washington, DC 20375 USA.
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 22
TC 0
Z9 0
U1 1
U2 6
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-60768-449-7; 978-1-62332-095-9
J9 ECS TRANSACTIONS
PY 2013
VL 58
IS 4
BP 9
EP 15
DI 10.1149/05804.0009ecst
PG 7
WC Electrochemistry; Engineering, Electrical & Electronic; Physics, Applied
SC Electrochemistry; Engineering; Physics
GA BJO95
UT WOS:000329443400002
ER
PT S
AU Anderson, TJ
Koehler, AD
Tadjer, MJ
Hobart, KD
Specht, P
Porter, M
Weatherford, TR
Weaver, B
Hite, JK
Kub, FJ
AF Anderson, T. J.
Koehler, A. D.
Tadjer, M. J.
Hobart, K. D.
Specht, P.
Porter, M.
Weatherford, T. R.
Weaver, B.
Hite, J. K.
Kub, F. J.
BE Shenai, K
Dudley, M
Bakowski, M
Ohtani, N
TI Reliability of GaN HEMTs: Electrical and Radiation-Induced Failure
Mechanisms
SO GALLIUM NITRIDE AND SILICON CARBIDE POWER TECHNOLOGIES 3
SE ECS Transactions
LA English
DT Proceedings Paper
CT 3rd Symposium on Gallium Nitride (GaN) and Silicon Carbide (SiC) Power
Technologies as part of the Fall Meeting of the Electrochemical-Society
(ECS)
CY OCT 28-31, 2013
CL San Francisco, CA
SP Electrochem Soc, Electrochem Soc, Elect & Photon Div, Electrochem Soc, Dielectr Sci & Technol Div, US Natl Sci Fdn, IEEE Power Elect Soc
AB The reliability of AlGaN/GaN HEMTs is currently a limiting factor in the development of next-generation power amplifier technology. In this work, we use atomic-resolution transmission electron microscopy (TEM) to directly image the defects associated with device failure. Furthermore, we attempt to induce defects through electrical and radiation-induced stress on the device, and compare the mechanism for failure by TEM analysis.
C1 [Anderson, T. J.; Koehler, A. D.; Tadjer, M. J.; Hobart, K. D.; Weaver, B.; Hite, J. K.; Kub, F. J.] Naval Res Lab, Washington, DC 20375 USA.
[Specht, P.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Porter, M.; Weatherford, T. R.] US Navy, Postgrad Sch, Monterey, CA 93943 USA.
RP Anderson, TJ (reprint author), Naval Res Lab, Washington, DC 20375 USA.
RI Hite, Jennifer/L-5637-2015
OI Hite, Jennifer/0000-0002-4090-0826
NR 5
TC 0
Z9 0
U1 2
U2 4
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-60768-449-7; 978-1-62332-095-9
J9 ECS TRANSACTIONS
PY 2013
VL 58
IS 4
BP 221
EP 225
DI 10.1149/05804.0221ecst
PG 5
WC Electrochemistry; Engineering, Electrical & Electronic; Physics, Applied
SC Electrochemistry; Engineering; Physics
GA BJO95
UT WOS:000329443400022
ER
PT S
AU Eddy, CR
Anderson, TJ
Koehler, AD
Nepal, N
Meyer, DJ
Tadjer, MJ
Baranyai, R
Pomeroy, JW
Kuball, M
Feygelson, TI
Pate, BB
Mastro, MA
Hite, JK
Ancona, MG
Kub, FJ
Hobart, KD
AF Eddy, C. R., Jr.
Anderson, T. J.
Koehler, A. D.
Nepal, N.
Meyer, D. J.
Tadjer, M. J.
Baranyai, R.
Pomeroy, J. W.
Kuball, M.
Feygelson, T. I.
Pate, B. B.
Mastro, M. A.
Hite, J. K.
Ancona, M. G.
Kub, F. J.
Hobart, K. D.
BE Shenai, K
Dudley, M
Bakowski, M
Ohtani, N
TI GaN Power Transistors with Integrated Thermal Management
SO GALLIUM NITRIDE AND SILICON CARBIDE POWER TECHNOLOGIES 3
SE ECS Transactions
LA English
DT Proceedings Paper
CT 3rd Symposium on Gallium Nitride (GaN) and Silicon Carbide (SiC) Power
Technologies as part of the Fall Meeting of the Electrochemical-Society
(ECS)
CY OCT 28-31, 2013
CL San Francisco, CA
SP Electrochem Soc, Electrochem Soc, Elect & Photon Div, Electrochem Soc, Dielectr Sci & Technol Div, US Natl Sci Fdn, IEEE Power Elect Soc
ID EPITAXY
AB The concept for and design/fabrication of a GaN power transistor with integrated thermal management is presented. Key elements of the design, including those supporting enhancement-mode operation, high breakdown voltages and low on-resistance are described in detail. The importance of surface preparation and growth of high-kappa gate dielectrics using atomic layer deposition is summarized. Aspects of barrier design and surface passivation to promote low access resistance including lattice matched barriers and novel low-temperature AlN passivations are discussed. Finally, the integration of nanocrystalline diamond coatings on both the top-side and the back-side of the device for thermal management are described. Initial performance assessments of each of these components, as measured in the device operation, are presented and future efforts are highlighted.
C1 [Eddy, C. R., Jr.; Anderson, T. J.; Koehler, A. D.; Meyer, D. J.; Feygelson, T. I.; Pate, B. B.; Mastro, M. A.; Hite, J. K.; Ancona, M. G.; Kub, F. J.; Hobart, K. D.] US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
[Nepal, N.; Tadjer, M. J.] Amer Society Engn Educ, Washington, DC 200 USA.
[Baranyai, R.; Pomeroy, J. W.; Kuball, M.] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England.
RP Eddy, CR (reprint author), US Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
RI Pate, Bradford/B-4752-2010; Hite, Jennifer/L-5637-2015
OI Pate, Bradford/0000-0002-3288-2947; Hite, Jennifer/0000-0002-4090-0826
NR 9
TC 1
Z9 1
U1 1
U2 9
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-60768-449-7; 978-1-62332-095-9
J9 ECS TRANSACTIONS
PY 2013
VL 58
IS 4
BP 279
EP 286
DI 10.1149/05804.0279ecst
PG 8
WC Electrochemistry; Engineering, Electrical & Electronic; Physics, Applied
SC Electrochemistry; Engineering; Physics
GA BJO95
UT WOS:000329443400029
ER
PT S
AU Mahadik, NA
Nath, A
Imhoff, EA
Stahlbush, RE
Nipoti, R
AF Mahadik, N. A.
Nath, A.
Imhoff, E. A.
Stahlbush, R. E.
Nipoti, R.
BE Shenai, K
Dudley, M
Bakowski, M
Ohtani, N
TI Basal Plane Dislocation Mitigation using High Temperature Annealing in
4H-SiC Epitaxy
SO GALLIUM NITRIDE AND SILICON CARBIDE POWER TECHNOLOGIES 3
SE ECS Transactions
LA English
DT Proceedings Paper
CT 3rd Symposium on Gallium Nitride (GaN) and Silicon Carbide (SiC) Power
Technologies as part of the Fall Meeting of the Electrochemical-Society
(ECS)
CY OCT 28-31, 2013
CL San Francisco, CA
SP Electrochem Soc, Electrochem Soc, Elect & Photon Div, Electrochem Soc, Dielectr Sci & Technol Div, US Natl Sci Fdn, IEEE Power Elect Soc
ID DEFECTS; DIODES
AB Basal plane dislocations (BPD) were mostly eliminated in 4H-SiC epitaxy using post growth high temperature annealing in the range of 1600 degrees C - 1950 degrees C for 30s - 2 mins. The samples annealed at temperatures >1700 degrees C showed the best BPD reduction. However, surface morphology was degraded for samples annealed >1850 degrees C, and new BPDs were generated. A better capping technique was developed to improve the surface morphology and avoid generation of new BPDs, while significantly reducing the existing BPDs in the SiC epitaxial layers.
C1 [Mahadik, N. A.; Imhoff, E. A.; Stahlbush, R. E.] Naval Res Lab, Washington, DC USA.
[Nath, A.] George Mason Univ, Fairfax, VA USA.
[Nipoti, R.] CNR, IMM, Bologna, Italy.
RP Mahadik, NA (reprint author), Naval Res Lab, Washington, DC USA.
RI Nipoti, Roberta/N-6162-2014
OI Nipoti, Roberta/0000-0002-8019-9149
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 8
TC 0
Z9 1
U1 1
U2 11
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-60768-449-7; 978-1-62332-095-9
J9 ECS TRANSACTIONS
PY 2013
VL 58
IS 4
BP 325
EP 329
DI 10.1149/05804.0325ecst
PG 5
WC Electrochemistry; Engineering, Electrical & Electronic; Physics, Applied
SC Electrochemistry; Engineering; Physics
GA BJO95
UT WOS:000329443400035
ER
PT J
AU Drusinsky, D
AF Drusinsky, Doron
TI Behavioral and Temporal Rule Checking for Gaussian Random Process - a
Kalman Filter Example
SO JOURNAL OF UNIVERSAL COMPUTER SCIENCE
LA English
DT Article
DE Random process; Kalman Filter; UML; statecharts; monitoring; patterns
AB This paper describes a behavioral and temporal pattern detection technique for state-space systems whose state is a random variable such as the state estimated using a Kalman filter. Our novel behavioral and temporal pattern detection technique uses diagrammatic, intuitive, yet formal specifications based on a dialect of the UML of the kind used to monitor or formally verify the correctness of deterministic systems. Combining these formal specifications with a special code generator, extends the deterministic pattern detection technique to the domain of stochastic processes.
We demonstrate the technique using a Ballistic trajectory Kalman filter tracking example in which a pattern-rule of interest is not flagged when observing the sequence of mean track position values but is flagged with a reasonable probability using the proposed technique.
C1 [Drusinsky, Doron] Naval Postgrad Sch, Monterey, CA USA.
RP Drusinsky, D (reprint author), Naval Postgrad Sch, Monterey, CA USA.
EM ddrusins@nps.edu
FU U.S. Defense Threat Reduction Agency (DTRA)
FX This research was funded by a grant from the U.S. Defense Threat
Reduction Agency (DTRA).
NR 10
TC 0
Z9 0
U1 0
U2 1
PU GRAZ UNIV TECHNOLGOY, INST INFORMATION SYSTEMS COMPUTER MEDIA-IICM
PI GRAZ
PA INFFELDGASSE 16C, GRAZ, A-8010, AUSTRIA
SN 0948-695X
J9 J UNIVERS COMPUT SCI
JI J. Univers. Comput. Sci.
PY 2013
VL 19
IS 15
BP 2198
EP 2206
PG 9
WC Computer Science, Software Engineering; Computer Science, Theory &
Methods
SC Computer Science
GA 286TL
UT WOS:000329491500003
ER
PT B
AU Ives, RW
Broussard, RP
Rakvic, RN
Link, SB
AF Ives, Robert W.
Broussard, Randy P.
Rakvic, Ryan N.
Link, Steven B.
BE Du, EY
TI Iris Recognition
SO BIOMETRICS: FROM FICTION TO PRACTICE
LA English
DT Article; Book Chapter
C1 [Ives, Robert W.] US Naval Acad, ECE Dept, Annapolis, MD 21402 USA.
US Naval Acad, WSE Dept, Annapolis, MD 21402 USA.
RP Ives, RW (reprint author), US Naval Acad, ECE Dept, Annapolis, MD 21402 USA.
EM ives@usna.edu
NR 13
TC 0
Z9 0
U1 0
U2 0
PU PAN STANFORD PUBLISHING PTE LTD
PI SINGAPORE
PA PENTHOUSE LEVEL, SUNTEC TOWER 3, 8 TEMASEK BLVD, SINGAPORE, 038988,
SINGAPORE
BN 978-981-4364-13-3; 978-981-4310-88-8
PY 2013
BP 65
EP 86
PG 22
WC Mathematical & Computational Biology
SC Mathematical & Computational Biology
GA BJK33
UT WOS:000328648100005
ER
PT J
AU Grisso, BL
Park, G
Salvino, LW
Farrar, CR
AF Grisso, B. L.
Park, G.
Salvino, L. W.
Farrar, C. R.
BE Chang, FK
TI Structural Damage Identification in Stiffened Plate Fatigue Specimens
Using Piezoelectric Active Sensing
SO STRUCTURAL HEALTH MONITORING 2011: CONDITION-BASED MAINTENANCE AND
INTELLIGENT STRUCTURES, VOL 2
SE Structural Health Monitoring
LA English
DT Proceedings Paper
CT 8th International Workshop on Structural Health Monitoring
CY SEP 13-15, 2011
CL Stanford Univ, Stanford, CA
SP AF Off Sci Res, Army Res Off, Natl Sci Fdn, Off Naval Res
HO Stanford Univ
AB This paper presents a guided wave structural health monitoring (SHM) technique, based on the use of piezoelectric active-sensors, used to determine the structural integrity of stiffened aluminum plates. For damage detection, the transmitted power between piezoelectric transducers used for Lamb wave propagation is utilized to analyze the extent of damage in the structure. Damage initiation and propagation were successfully monitored with the guided wave technique. Overall, these methods yielded sufficient damage detection capability to warrant further investigation into field deployment. This paper summarizes considerations needed to design such SHM systems, experimental procedures and results, and recommendations that can be used as guidelines for future investigations.
C1 [Grisso, B. L.; Salvino, L. W.] Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA.
RP Grisso, BL (reprint author), Naval Surface Warfare Ctr, Carderock Div, West Bethesda, MD 20817 USA.
NR 9
TC 0
Z9 0
U1 0
U2 0
PU DESTECH PUBLICATIONS, INC
PI LANCASTER
PA 439 DUKE STREET, LANCASTER, PA 17602-4967 USA
BN 978-1-60595-053-2
J9 STRUCT HLTH MONIT
PY 2013
BP 1683
EP 1690
PG 8
WC Engineering, Multidisciplinary
SC Engineering
GA BJH31
UT WOS:000328194500041
ER
PT J
AU Klenzing, J
Burrell, AG
Heelis, RA
Huba, JD
Pfaff, R
Simoes, F
AF Klenzing, J.
Burrell, A. G.
Heelis, R. A.
Huba, J. D.
Pfaff, R.
Simoes, F.
TI Exploring the role of ionospheric drivers during the extreme solar
minimum of 2008
SO ANNALES GEOPHYSICAE
LA English
DT Article
DE Ionosphere; equatorial ionosphere; ion chemistry and composition;
modeling and forecasting
ID EQUATORIAL IONOSPHERE; MODEL; ATMOSPHERE; SATELLITE
AB During the recent solar minimum, solar activity reached the lowest levels observed during the space age, resulting in a contracted atmosphere. This extremely low solar activity provides an unprecedented opportunity to understand the variability of the Earth's ambient ionosphere. The average E x B drifts measured by the Vector Electric Field Instrument (VEFI) on the Communications/Navigation Outage Forecasting System (C/NOFS) satellite during this period are found to have several differences from the expected climatology based on previous solar minima, including downward drifts in the early afternoon and a weak to nonexistent pre-reversal enhancement. Using SAMI2 (Sami2 is Another Model of the Ionosphere) as a computational engine, we investigate the effects of these electrodynamical changes as well as the contraction of the thermosphere and reduced EUV ionization on the ionosphere. The sensitivity of the simulations to wind models is also discussed. These modeled ionospheres are compared to the C/NOFS average topside ion density and composition and Formosa Satellite-3/Constellation Observing System for Meteorology, Ionosphere, and Climate average NmF2 and hmF2. In all cases, incorporating the VEFI drift data significantly improves the model results when compared to both the C/NOFS density data and the F3/C GOX data. Changing the MSIS and EUVAC models produced changes in magnitude, but not morphology with respect to local time. The choice of wind model modulates the resulting topside density and composition, but only the use of the VEFI E x B drifts produces the observed post-sunset drop in the F peak.
C1 [Klenzing, J.; Pfaff, R.; Simoes, F.] NASA, Goddard Space Flight Ctr, Space Weather Lab, Greenbelt, MD 20771 USA.
[Burrell, A. G.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
[Heelis, R. A.] Univ Texas Dallas, William B Hanson Ctr Space Sci, Richardson, TX 75083 USA.
[Huba, J. D.] Naval Res Lab, Div Plasma Phys, Washington, DC USA.
RP Klenzing, J (reprint author), NASA, Goddard Space Flight Ctr, Space Weather Lab, Code 674, Greenbelt, MD 20771 USA.
EM jeffrey.klenzing@nasa.gov
RI Klenzing, Jeff/E-2406-2011;
OI Klenzing, Jeff/0000-0001-8321-6074; Burrell,
Angeline/0000-0001-8875-9326
FU USAF Space Test Program
FX The Communication/Navigation Outage Forecast System (C/NOFS) mission,
conceived and developed by the Air Force Research Laboratory (AFRL), is
sponsored and executed by the USAF Space Test Program. Thanks to J.
Emmert and C. Siefring for providing the MSIS scalars. The authors would
like to thank the F3/C orbital operation team at the National Space
Organization (NSPO) and the University Corporation for Atmospheric
Research (UCAR) for their roles in obtaining and distributing the F3/C
data. This work uses the SAMI2 ionosphere model written and developed by
the Naval Research Laboratory.
NR 37
TC 4
Z9 4
U1 0
U2 8
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 0992-7689
EI 1432-0576
J9 ANN GEOPHYS-GERMANY
JI Ann. Geophys.
PY 2013
VL 31
IS 12
BP 2147
EP 2156
DI 10.5194/angeo-31-2147-2013
PG 10
WC Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences
GA 280TL
UT WOS:000329053600002
ER
PT J
AU Aveiro, HC
Huba, JD
AF Aveiro, H. C.
Huba, J. D.
TI Equatorial spread F studies using SAMI3 with two-dimensional and
three-dimensional electrostatics
SO ANNALES GEOPHYSICAE
LA English
DT Article
DE Ionosphere; Equatorial ionosphere; Modeling and forecasting; Plasma
waves and instabilities
ID TO-DAY VARIABILITY; IONOSPHERE; SHEAR
AB This letter presents a study of equatorial F region irregularities using the NRL SAMI3/ESF model, comparing results using a two-dimensional (2-D) and a three-dimensional (3-D) electrostatic potential solution. For the 3-D potential solution, two cases are considered for parallel plasma transport: (1) transport based on the parallel ambipolar field, and (2) transport based on the parallel electric field. The results show that the growth rate of the generalized Rayleigh-Taylor instability is not affected by the choice of the potential solution. However, differences are observed in the structures of the irregularities between the 2-D and 3-D solutions. Additionally, the plasma velocity along the geo-magnetic field computed using the full 3-D solution shows complex structures that are not captured by the simplified model. This points out that only the full 3-D model is able to fully capture the complex physics of the equatorial F region.
C1 [Aveiro, H. C.] Naval Res Lab, Natl Res Council, Washington, DC 20375 USA.
[Huba, J. D.] Naval Res Lab, Div Plasma Phys, Washington, DC USA.
RP Aveiro, HC (reprint author), Naval Res Lab, Natl Res Council, Washington, DC 20375 USA.
EM hca24@cornell.edu
FU National Research Council Research Associateship Award at the US Naval
Research Laboratory; NRL Base Funds
FX This research was performed while one of the authors (H. C. A.) held a
National Research Council Research Associateship Award at the US Naval
Research Laboratory. The research of J.D.H. was supported by NRL Base
Funds.
NR 12
TC 3
Z9 3
U1 0
U2 5
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 0992-7689
EI 1432-0576
J9 ANN GEOPHYS-GERMANY
JI Ann. Geophys.
PY 2013
VL 31
IS 12
BP 2157
EP 2162
DI 10.5194/angeo-31-2157-2013
PG 6
WC Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences
GA 280TL
UT WOS:000329053600003
ER
PT J
AU Joshi, K
Villanueva, A
Smith, C
Maurya, D
Blottman, J
Priya, S
AF Joshi, Keyur
Villanueva, Alex
Smith, Colin
Maurya, Deepam
Blottman, John
Priya, Shashank
TI Aurelia aurita Inspired Artificial Mesoglea
SO INTEGRATED FERROELECTRICS
LA English
DT Article; Proceedings Paper
CT International Network of Advanced and Multifunctional Materials (INAMM)
Symposium
CY DEC 09-10, 2012
CL Pattaya, THAILAND
DE Mesoglea; nanoparticle; PVA; Ecoflex; stiffness; hydrogel; composite
ID POLYVINYL-ALCOHOL) HYDROGEL; POLYORCHIS-PENICILLATUS;
MECHANICAL-PROPERTIES; JELLYFISH; MATRIX
AB In this preliminary study, we report the mechanical and dielectric properties of polyvinyl alcohol (PVA)-ferritin hydrogel. This material was found to exhibit close resemblance to Aurelia aurita (jellyfish) mesoglea in terms of stiffness modulus and water content. Systematic experiments were conducted on natural jellyfish to identify its compression modulus a function of deformation. In compressive testing Aurelia aurita mesoglea was found to exhibit nonlinear modulus in the range of -10 kPa to 70 kPa depending upon the compressive strain (0-50% strain). The negative stiffness is an artifact of tensile force experienced by the specimen at the beginning of the test due to surface tension. PVA hydrogels with 60% water to dimethyl sulfoxide (DMSO) ratio without ferritin particle (H60) and PVA hydrogels with 80% water to DMSO ratio with ferritin particle (F80) provided a good alternative to natural jellyfish mesoglea exhibiting shear modulus of 33.06 Pa and 39.99 Pa respectively as compared to 4.75 Pa for Aurelia aurita mesoglea. This is a significantly better match compared to the 1041.67 Pa shear modulus of Ecoflex, a soft polymer material commonly used in biomimetic robotics. A Mooney Rivlin model suggests that H60 and F80 compositions are about 6.9times and 8.4times stiffer than natural Aurelia aurtia mesoglea whereas Ecoflex is 219times as stiff. Nanocomposite hydrogel consisting of PVA matrix and ferritin nanoparticles were found to exhibit higher durability over regular PVA hydrogels and had more consistent properties due to increased cross-linking at ferritin nanoparticle sites. The ferritin nanoparticles were found to act as springs, increasing the modulus by increasing the surface area of the cross-linked polymer chains and disrupting long linear chain patterns of the polymer. Natural Aurelia aurita was found to have water content of 96.3% with a standard deviation of 0.57% as compared to 85% water content of PVA-ferritin hydrogels. Use of this material in the design of biomimetic unmanned underwater vehicles is expected to reduce the power consumption, increase swimming efficiency, and better replicate the rowing kinematics of naturally occurring Aurelia aurita.
C1 [Joshi, Keyur; Villanueva, Alex; Smith, Colin; Maurya, Deepam; Priya, Shashank] Virginia Tech, Ctr Energy Harvesting Mat & Syst, Blacksburg, VA 24061 USA.
[Joshi, Keyur; Villanueva, Alex; Smith, Colin; Maurya, Deepam; Priya, Shashank] Virginia Tech, Bioinspired Mat & Devices Lab, Blacksburg, VA 24061 USA.
[Blottman, John] Naval Undersea Warfare Ctr, Newport, RI 02841 USA.
RP Priya, S (reprint author), Virginia Tech, Ctr Energy Harvesting Mat & Syst, Blacksburg, VA 24061 USA.
EM spriya@vt.edu
RI Joshi, Keyur/C-4557-2014
OI Joshi, Keyur/0000-0002-0751-785X
FU Office of Naval Research [N00014-08-1-0654]; U.S. Army Research Office
[W911NF-07-1-0452]
FX This work is sponsored by the Office of Naval Research through contract
number N00014-08-1-0654 Jellyfish Autonomous Node and Colonies MURI and
the U.S. Army Research Office under grant number W911NF-07-1-0452 Ionic
Liquids in Electro-Active Devices (ILEAD) MURI.
NR 33
TC 2
Z9 2
U1 1
U2 12
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND
SN 1058-4587
EI 1607-8489
J9 INTEGR FERROELECTR
JI Integr. Ferroelectr.
PD JAN 1
PY 2013
VL 148
IS 1
BP 53
EP 66
DI 10.1080/10584587.2013.851591
PG 14
WC Engineering, Electrical & Electronic; Physics, Applied; Physics,
Condensed Matter
SC Engineering; Physics
GA 269NL
UT WOS:000328247900004
ER
PT S
AU Buckhout-White, S
Spillmann, C
Ancona, M
Algar, WR
Stewart, MH
Susumu, K
Huston, A
Goldman, ER
Medintz, IL
AF Buckhout-White, Susan
Spillmann, Christopher
Ancona, Mario
Algar, W. Russ
Stewart, Michael H.
Susumu, Kimihiro
Huston, Alan
Goldman, Ellen R.
Medintz, Igor L.
BE Kobayashi, N
Ouchen, F
Rau, I
TI Improving Energy Transfer in QD-DNA Photonic Networks
SO NANOBIOSYSTEMS: PROCESSING, CHARACTERIZATION, AND APPLICATIONS VI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Nanobiosystems - Processing, Characterization, and
Applications VI
CY AUG 25-28, 2013
CL San Diego, CA
SP SPIE
DE Forster resonance energy transfer; quantum dot; photonic networks
ID QUANTUM DOTS; NANOCRYSTALS; JUNCTIONS; DONORS
AB There is considerable research in the area of manipulating light below the diffraction limit, with potential applications ranging from information processing to light-harvesting. In such work, a common problem is a lack of efficiency associated with non-radiative losses, e. g., ohmic loss in plasmonic structures. From this point of view, one attractive method for sub-wavelength light manipulation is to use Forster resonance energy transfer (FRET) between chromophores. Although most current work does not show high efficiency, biology suggests that this approach could achieve very high efficiency. In order to achieve this goal, the geometry and spacing of the chromophores must be optimized. For this, DNA provides an easy means for the self-assembly of these complex structures. With well established ligation chemistries, it is possible to create facile hierarchical assemblies of quantum dots (QDs) and organic dyes using DNA as the platform. These nanostructures range from simple linear wires to complex 3-dimensional structures all of which can be self-assembled around a central QD. The efficiency of the system can then be tuned by changing the spacing between chromophores, changing the DNA geometry such that the donor to acceptor ratio changes, or changing the number of DNA structures that are self-assembled around the central QD. By exploring these variables we have developed a flexible optical system for which the efficiency can be both controlled and optimized.
C1 [Buckhout-White, Susan; Algar, W. Russ] George Mason Univ, 10910 Univ Blvd,MS 4E3, Manassas, VA 20110 USA.
[Spillmann, Christopher; Ancona, Mario; Algar, W. Russ; Stewart, Michael H.; Susumu, Kimihiro; Huston, Alan; Goldman, Ellen R.; Medintz, Igor L.] George Mason Univ, Naval Res Lab, Fairfax, VA 22030 USA.
RP Buckhout-White, S (reprint author), George Mason Univ, 10910 Univ Blvd,MS 4E3, Manassas, VA 20110 USA.
FU Office of Naval Research; NRL NSI; DTRA JSTO MIPR [B112582M]
FX The authors acknowledge the Office of Naval Research, the NRL NSI and
DTRA JSTO MIPR # B112582M for financial support.
NR 16
TC 0
Z9 0
U1 0
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9667-6
J9 PROC SPIE
PY 2013
VL 8817
AR UNSP 88170J
DI 10.1117/12.2024574
PG 9
WC Nanoscience & Nanotechnology; Materials Science, Characterization &
Testing; Optics
SC Science & Technology - Other Topics; Materials Science; Optics
GA BJI62
UT WOS:000328343900012
ER
PT S
AU Claussen, JC
Algar, WR
Hildebrandt, N
Susumu, K
Ancona, MG
Medintz, IL
AF Claussen, Jonathan C.
Algar, W. Russ
Hildebrandt, Niko
Susumu, Kimihiro
Ancona, Mario G.
Medintz, Igor L.
BE Kobayashi, N
Ouchen, F
Rau, I
TI Enhancing molecular logic through modulation of temporal and spatial
constraints with quantum dot-based systems that use fluorescent
(forster) resonance energy transfer
SO NANOBIOSYSTEMS: PROCESSING, CHARACTERIZATION, AND APPLICATIONS VI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Nanobiosystems - Processing, Characterization, and
Applications VI
CY AUG 25-28, 2013
CL San Diego, CA
SP SPIE
DE Fluorescent (Forster) Resonance Energy Transfer (FRET); quantum dot;
molecular logic; Boolean logic; terbium
ID GATES; ASSEMBLIES; PROBE; IONS
AB Luminescent semiconductor nanocrystals or quantum dots (QDs) contain favorable photonic properties (e. g., resistance to photobleaching, size-tunable PL, and large effective Stokes shifts) that make them well-suited for fluorescence (Forster) resonance energy transfer (FRET) based applications including monitoring proteolytic activity, elucidating the effects of nanoparticles-mediated drug delivery, and analyzing the spatial and temporal dynamics of cellular biochemical processes. Herein, we demonstrate how unique considerations of temporal and spatial constraints can be used in conjunction with QD-FRET systems to open up new avenues of scientific discovery in information processing and molecular logic circuitry. For example, by conjugating both long lifetime luminescent terbium(III) complexes (Tb) and fluorescent dyes (A647) to a single QD, we can create multiple FRET lanes that change temporally as the QD acts as both an acceptor and donor at distinct time intervals. Such temporal FRET modulation creates multi-step FRET cascades that produce a wealth of unique photoluminescence (PL) spectra that are well-suited for the construction of a photonic alphabet and photonic logic circuits. These research advances in bio-based molecular logic open the door to future applications including multiplexed biosensing and drug delivery for disease diagnostics and treatment.
C1 [Claussen, Jonathan C.; Medintz, Igor L.] US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA.
[Algar, W. Russ] George Mason Univ, Fairfax, VA 22030 USA.
[Hildebrandt, Niko] Univ Paris, Paris, France.
RP Medintz, IL (reprint author), US Naval Res Lab, Ctr Bio Mol Sci & Engn, Code 6900, Washington, DC 20375 USA.
EM jonathan.claussen.ctr@nrl.navy.mil; igor.medintz@nrl.navy.mil
OI Claussen, Jonathan/0000-0001-7065-1077
FU NRL; NRL NSI; ONR; DARPA; DTRA-JSTO MIPR [B112582M]; European Commission
(FP7 project Nanognostics)
FX The authors would like to gratefully thank NRL, NRL NSI, ONR, DARPA,
DTRA-JSTO MIPR No. B112582M, and the European Commission (FP7 project
Nanognostics) for financial support. We also would like to extend thanks
to Lumiphore, Inc. for the Lumi4-Tb reagents and Invitrogen Life
Sciences for the QDs.
NR 37
TC 0
Z9 0
U1 1
U2 9
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9667-6
J9 PROC SPIE
PY 2013
VL 8817
AR UNSP 88170O
DI 10.1117/12.2024287
PG 9
WC Nanoscience & Nanotechnology; Materials Science, Characterization &
Testing; Optics
SC Science & Technology - Other Topics; Materials Science; Optics
GA BJI62
UT WOS:000328343900016
ER
PT J
AU Shogan, BD
Smith, DP
Packman, AI
Kelley, ST
Landon, EM
Bhangar, S
Vora, GJ
Jones, RM
Keegan, K
Stephens, B
Ramos, T
Kirkup, BC
Levin, H
Rosenthal, M
Foxman, B
Chang, EB
Siegel, J
Cobey, S
An, G
Alverdy, JC
Olsiewski, PJ
Martin, MO
Marrs, R
Hernandez, M
Christley, S
Morowitz, M
Weber, S
Gilbert, J
AF Shogan, Benjamin D.
Smith, Daniel P.
Packman, Aaron I.
Kelley, Scott T.
Landon, Emily M.
Bhangar, Seema
Vora, Gary J.
Jones, Rachael M.
Keegan, Kevin
Stephens, Brent
Ramos, Tiffanie
Kirkup, Benjamin C., Jr.
Levin, Hal
Rosenthal, Mariana
Foxman, Betsy
Chang, Eugene B.
Siegel, Jeffrey
Cobey, Sarah
An, Gary
Alverdy, John C.
Olsiewski, Paula J.
Martin, Mark O.
Marrs, Rachel
Hernandez, Mark
Christley, Scott
Morowitz, Michael
Weber, Stephen
Gilbert, Jack
TI The Hospital Microbiome Project: Meeting report for the 2nd Hospital
Microbiome Project, Chicago, USA, January 15th, 2013
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
AB This report details the outcome of the 2nd Hospital Microbiome Project workshop held on January 15th at the University of Chicago, USA. This workshop was the final planning meeting prior to the start of the Hospital Microbiome Project, an investigation to measure and characterize the development of a microbial community within a newly built hospital at the University of Chicago. The main goals of this workshop were to bring together experts in various disciplines to discuss the potential hurdles facing the implementation of the project, and to allow brainstorming of potential synergistic project opportunities.
C1 [Shogan, Benjamin D.; An, Gary; Alverdy, John C.; Christley, Scott] Univ Chicago Med, Dept Surg, Chicago, IL 60637 USA.
[Smith, Daniel P.; Keegan, Kevin; Gilbert, Jack] Argonne Natl Lab, Argonne, IL 60439 USA.
[Packman, Aaron I.] Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA.
[Kelley, Scott T.] San Diego State Univ, Dept Biol, San Diego, CA 92182 USA.
[Landon, Emily M.; Marrs, Rachel; Weber, Stephen] Univ Chicago Med, Dept Med, Sect Infect Dis & Global Hlth, Chicago, IL 60637 USA.
[Bhangar, Seema] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
[Vora, Gary J.] Naval Res Lab, Ctr Bio Mol Sci & Engn, Washington, DC 20375 USA.
[Jones, Rachael M.] Univ Illinois, Sch Publ Hlth, Div Environm & Occupat Hlth Sci, Chicago, IL 60612 USA.
[Stephens, Brent; Ramos, Tiffanie] IIT, Dept Civil Architectural & Environm Engn, Chicago, IL 60616 USA.
[Kirkup, Benjamin C., Jr.] Walter Reed Army Inst Res, Dept Wound Infect, Silver Spring, MD 20910 USA.
[Kirkup, Benjamin C., Jr.] Uniformed Serv Univ Hlth Sci, Dept Med, Bethesda, MD 20814 USA.
[Levin, Hal] Bldg Ecol Res Grp, Santa Cruz, CA 95060 USA.
[Rosenthal, Mariana; Foxman, Betsy] Univ Michigan, Sch Publ Hlth, Dept Epidemiol, Ann Arbor, MI 48109 USA.
[Chang, Eugene B.] Univ Chicago Med, Dept Med, Chicago, IL 60637 USA.
[Siegel, Jeffrey] Univ Toronto, Dept Civil Engn, Toronto, ON M5S 1A1, Canada.
[Cobey, Sarah; Gilbert, Jack] Univ Chicago, Dept Ecol & Evolut, Chicago, IL 60637 USA.
[Olsiewski, Paula J.] Alfred P Sloan Fdn, New York, NY 10111 USA.
[Martin, Mark O.] Univ Puget Sound, Dept Biol, Tacoma, WA 98416 USA.
[Hernandez, Mark] Univ Colorado, Dept Civil Environm & Architectural Engn, Boulder, CO 80309 USA.
[Morowitz, Michael] Univ Pittsburgh, Childrens Hosp Pittsburgh UPMC, Sch Med, Pittsburgh, PA 15224 USA.
RP Shogan, BD (reprint author), Univ Chicago Med, Dept Surg, Chicago, IL 60637 USA.
RI Packman, Aaron/B-7085-2009; Foxman, Betsy/E-1836-2015; Kirkup,
Benjamin/C-3610-2009;
OI Kirkup, Benjamin/0000-0002-8722-6218; Vora, Gary/0000-0002-0657-8597
FU APSF; U.S. Dept. of Energy [DE-AC02-06CH11357]
FX We acknowledge the APSF for funding this workshop. This work was
supported in part by the U.S. Dept. of Energy under contract
DE-AC02-06CH11357.
NR 5
TC 3
Z9 3
U1 0
U2 20
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2013
VL 8
IS 3
BP 571
EP 579
DI 10.4056/sigs.4187859
PG 9
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 270ML
UT WOS:000328322400017
PM 24501640
ER
PT S
AU Livingston, MA
Moser, KR
AF Livingston, Mark A.
Moser, Kenneth R.
BE Coquillart, S
LaViola, JJ
Schmalstieg, D
TI Effectiveness of Occluded Object Representations at Displaying Ordinal
Depth Information in Augmented Reality
SO 2013 IEEE VIRTUAL REALITY CONFERENCE (VR)
SE Proceedings of the IEEE Virtual Reality Annual International Symposium
LA English
DT Proceedings Paper
CT 20th IEEE Virtual Reality Conference (VR)
CY MAR 16-23, 2013
CL Orlando, FL
SP IEEE, IEEE Comp Soc, IEEE Comp Soc Visualizat & Graph Tech Comm
DE Augmented reality; human factors evaluation; situation awareness;
ordinal depth; X-ray vision
AB An experiment was conducted to investigate the utility of a number of iconographic styles in relaying ordinal depth information at vista space distances of more than 1900m. The experiment consisted of two tasks: distance judgments with respect to discrete zones, and ordinal depth determination in the presence of icon overlap. The virtual object representations were chosen based on their effectiveness, as demonstrated in previous studies. The first task is an adaptation of a previous study investigating distance judgments of occluded objects at medium field distances. We found that only one of the icon styles fared better than guessing. The second is a novel task important to situation awareness and tested two specific cases: ordinal depth of icons with 50% and 100% overlap. We found that the case of full overlap made the task effectively impossible with all icon styles, whereas in the case of partial overlap, the Ground Plane had a clear advantage.
C1 [Livingston, Mark A.] Naval Res Lab, Washington, DC 20375 USA.
[Moser, Kenneth R.] Mississippi State Univ, Mississippi State, MS 39762 USA.
RP Livingston, MA (reprint author), Naval Res Lab, Washington, DC 20375 USA.
EM mark.livingston@nrl.navy.mil; krm104@msstate.edu
NR 6
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1087-8270
BN 978-1-4673-4796-9; 978-1-4673-4795-2
J9 P IEEE VIRT REAL ANN
PY 2013
BP 107
EP +
PG 2
WC Computer Science, Artificial Intelligence; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA BID50
UT WOS:000327715600037
ER
PT B
AU Barsoum, RGS
AF Barsoum, R. G. S.
BE Soares, CG
Romanoff, J
TI Hybrid composite and metallic hulls, the best of both worlds
SO ANALYSIS AND DESIGN OF MARINE STRUCTURES, MARSTRUCT 2013
LA English
DT Proceedings Paper
CT 4th International Conference on Marine Structures (MARSTRUCT)
CY MAR 25-27, 2013
CL Espoo, FINLAND
AB Hybrid composite and metallic structures may provide cost-effective solutions for future ship hulls. We will discuss the advantages of the hybrid hull from the "Total Ship Engineering" approach. They offer the potential to reduce the manufacturing costs associated with complex shaped bow and stern sections while simultaneously providing a lower weight and non-magnetic structural design. Challenges to achieving these benefits include the unknown and uncertain structural performance of the composite-steel joint connection. This interface is a complex combination of in-plane and out-of-plane strength, bearing and friction, which represent several challenges for computations and design. The paper will discuss the research and development effort on lightweight, low-cost, improved survivability hybrid hull concepts and composite-to-steel joining technology for future hybrid hull structures. It will also discuss the use of the hybrid concept for hull modification to increase payload and improve fuel efficiency. It will address analytical assessment and the influence of design parameters on joint performance, tests of several hybrid joint components involving the in-plane attachment of a composite bow/stern component to a metallic mid-body ship hull, investigations of material and geometric design parameters for hybrid composite-to-steel joints for bonded, fastened, and bonded/fastened configurations and their performance under static, dynamic loading.
C1 Off Naval Res, Ships & Engn Syst Div, Arlington, VA 22217 USA.
RP Barsoum, RGS (reprint author), Off Naval Res, Ships & Engn Syst Div, Arlington, VA 22217 USA.
NR 10
TC 0
Z9 0
U1 1
U2 2
PU CRC PRESS-TAYLOR & FRANCIS GROUP
PI BOCA RATON
PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA
BN 978-0-203-73285-4; 978-1-138-00045-2
PY 2013
BP 377
EP 381
PG 5
WC Engineering, Marine
SC Engineering
GA BJH32
UT WOS:000328198800041
ER
PT J
AU Friedlaender, AS
Tyson, RB
Stimpert, AK
Read, AJ
Nowacek, DP
AF Friedlaender, A. S.
Tyson, R. B.
Stimpert, A. K.
Read, A. J.
Nowacek, D. P.
TI Extreme diel variation in the feeding behavior of humpback whales along
the western Antarctic Peninsula during autumn
SO MARINE ECOLOGY PROGRESS SERIES
LA English
DT Article
DE Humpback whale; Foraging ecology; Tagging; Antarctica
ID MEGAPTERA-NOVAEANGLIAE; EUPHAUSIA-SUPERBA; FORAGING BEHAVIOR; MARINE
MAMMALS; FIN WHALES; LUNGE; DIVE; KRILL; CLASSIFICATION; ENVIRONMENT
AB Most humpback whale Megaptera novaeangliae populations partition their time between prey-rich feeding and prey-deficient breeding/calving regions. How these whales feed and optimize the consumption of prey resources prior to long-distance migrations and fasting is largely unknown. We deployed multi-sensor tags on humpback whales around the western Antarctic Peninsula to describe their daily activity patterns late in the feeding season to test the hypothesis that feeding behavior varies over the diel cycle so as to maximize energy intake and limit energy expenditure. Dives were assigned to a behavioral state (feeding, resting, traveling, exploring) to determine hourly rates and to build an ethogram of activity patterns. Our results show a distinct diel pattern of whales feeding exclusively at night. Feeding depth was deeper around sunrise/sunset and shallower (similar to 50 m) at night, consistent with diel vertical prey movement. Shallow feeding dives typically contained a single feeding lunge, a strategy known to increase feeding efficiency and maximize intake rates by maintaining proximity to the surface and reducing the energetic costs of deep diving. The lack of feeding during daytime may indicate prey being too deep for efficient foraging. Our results add information where currently there is a paucity of data describing how baleen whales optimize feeding behavior, specifically in relation to prey distribution and movement, to fuel their extraordinary energetic requirements necessary for growth, migration, and reproduction. Understanding behavioral patterns and predator/prey dynamics in rapidly changing marine environments, like the Antarctic Peninsula, is critical for understanding how these changes will affect ecosystem structure and function.
C1 [Friedlaender, A. S.; Tyson, R. B.; Read, A. J.; Nowacek, D. P.] Duke Univ, Marine Lab, Div Marine Sci & Conservat, Beaufort, NC 28516 USA.
[Stimpert, A. K.] Naval Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA.
[Nowacek, D. P.] Duke Univ, Dept Elect & Comp Engn, Pratt Sch Engn, Durham, NC 27708 USA.
RP Friedlaender, AS (reprint author), Duke Univ, Marine Lab, Div Marine Sci & Conservat, 135 Duke Marine Lab Rd, Beaufort, NC 28516 USA.
EM asf7@duke.edu
OI Tyson, Reny/0000-0001-5541-193X
FU National Science Foundation, Office of Polar Programs [ANT-07-39483]
FX The authors thank members of the Multi-scale and Interdisciplinary Study
of Humpback and Prey (MISHAP) field team, including D. Johnston, D.
Waples, L. Peavey, A. Allen, C. Ware, A. Westgate, M. Dunphy-Daly, P.
Halpin, M. Zhou, Y. Zhu, J. Warren, E. Hazen, and B. Espinasse. We also
thank the crews and marine technicians of the RVIB 'Nathaniel B Palmer'
and ARSV 'Laurence M Gould' for their efforts. This research was
conducted under National Marine Fisheries Service Permit 808-1735, Ant
arctic Conservation Act Permit 2009-014, and Duke University
Institutional Animal Care & Use Committee A049-112-02 and was supported
by National Science Foundation, Office of Polar Programs Grant
ANT-07-39483.
NR 43
TC 11
Z9 12
U1 3
U2 41
PU INTER-RESEARCH
PI OLDENDORF LUHE
PA NORDBUNTE 23, D-21385 OLDENDORF LUHE, GERMANY
SN 0171-8630
EI 1616-1599
J9 MAR ECOL PROG SER
JI Mar. Ecol.-Prog. Ser.
PY 2013
VL 494
BP 281
EP 289
DI 10.3354/meps10541
PG 9
WC Ecology; Marine & Freshwater Biology; Oceanography
SC Environmental Sciences & Ecology; Marine & Freshwater Biology;
Oceanography
GA 267GX
UT WOS:000328086100021
ER
PT S
AU Heitmeyer, C
AF Heitmeyer, Constance
BE Moreira, A
Schatz, B
Gray, J
Vallecillo, A
Clarke, P
TI Model-Based Development of Software: A Panacea or Academic Poppycock
SO MODEL-DRIVEN ENGINEERING LANGUAGES AND SYSTEMS
SE Lecture Notes in Computer Science
LA English
DT Proceedings Paper
CT ACM/IEEE 16th International Conference on Model-Driven Engineering
Languages and Systems (MODELS)
CY SEP 29-OCT 04, 2013
CL Miami, FL
SP Assoc Comp Machinery, IEEE, Microsoft Res, CEA List, Int Software, Tata Consultancy Serv, Siemens, IEEE Comp Soc, ACM SIGSOFT, Springer, OMG
C1 Naval Res Lab, Ctr High Assurance Comp Syst, Washington, DC 20375 USA.
RP Heitmeyer, C (reprint author), Naval Res Lab, Ctr High Assurance Comp Syst, Washington, DC 20375 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU SPRINGER-VERLAG BERLIN
PI BERLIN
PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY
SN 0302-9743
BN 978-3-642-41532-6; 978-3-642-41533-3
J9 LECT NOTES COMPUT SC
PY 2013
VL 8107
PG 1
WC Computer Science, Software Engineering; Computer Science, Theory &
Methods
SC Computer Science
GA BIB36
UT WOS:000327240300002
ER
PT J
AU Lee, Y
Han, DK
Ko, H
AF Lee, Younghyun
Han, David K.
Ko, Hanseok
TI Reinforced AdaBoost Learning for Object Detection with Local Pattern
Representations
SO SCIENTIFIC WORLD JOURNAL
LA English
DT Article
ID FACE DETECTION; CLASSIFICATION
AB A reinforced AdaBoost learning algorithm is proposed for object detection with local pattern representations. In implementing Adaboost learning, the proposed algorithm employs an exponential criterion as a cost function and Newton's method for its optimization. In particular, we introduce an optimal selection of weak classifiers minimizing the cost function and derive the reinforced predictions based on a judicial confidence estimate to determine the classification results. The weak classifier of the proposed method produces real-valued predictions while that of the conventional Adaboost method produces integer valued predictions of +1 or -1. Hence, in the conventional learning algorithms, the entire sample weights are updated by the same rate. On the contrary, the proposed learning algorithm allows the sample weights to be updated individually depending on the confidence level of each weak classifier prediction, thereby reducing the number of weak classifier iterations for convergence. Experimental classification performance on human face and license plate images confirm that the proposed method requires smaller number of weak classifiers than the conventional learning algorithm, resulting in higher learning and faster classification rates. An object detector implemented based on the proposed learning algorithm yields better performance in field tests in terms of higher detection rate with lower false positives than that of the conventional learning algorithm.
C1 [Lee, Younghyun] Korea Univ, Dept Visual Informat Proc, Seoul 136713, South Korea.
[Han, David K.] Off Naval Res, Arlington, VA 22203 USA.
[Ko, Hanseok] Korea Univ, Sch Elect Engn, Seoul 136713, South Korea.
RP Ko, H (reprint author), Korea Univ, Sch Elect Engn, Engn Bldg,Room 419, Seoul 136713, South Korea.
EM hsko@korea.ac.kr
FU Seoul RBD Program [WR080951]
FX This research was supported by Seoul R&BD Program (WR080951).
NR 31
TC 2
Z9 2
U1 2
U2 11
PU HINDAWI PUBLISHING CORP
PI NEW YORK
PA 315 MADISON AVE 3RD FLR, STE 3070, NEW YORK, NY 10017 USA
SN 1537-744X
J9 SCI WORLD J
JI Sci. World J.
PY 2013
AR 153465
DI 10.1155/2013/153465
PG 14
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 265ZE
UT WOS:000327990500001
ER
PT S
AU Dobrokhodov, V
Jones, K
Kaminer, I
AF Dobrokhodov, Vladimir
Jones, Kevin
Kaminer, Isaac
GP IEEE
TI Rapid Flight Control Prototyping - Steps Toward Cooperative
Mission-Oriented Capabilities
SO 2013 AMERICAN CONTROL CONFERENCE (ACC)
SE Proceedings of the American Control Conference
LA English
DT Proceedings Paper
CT American Control Conference (ACC)
CY JUN 17-19, 2013
CL Washington, DC
SP Boeing, Eaton, Halliburton, Honeywell, MathWorks, Mitsubishi Elect Res Lab, Natl Instruments, United Technologies Res Ctr, Xerox, dSpace, Journal Franklin Inst, GE Global Res, Quanser, SIAM, Springer, Taylor & Francis Grp CRC Press, Wiley
AB The paper describes the latest advancements in the development of the Rapid Flight Control Prototyping system that were motivated primarily by the need to enable cooperative missions of multiple unmanned aerial vehicles and to enhance the capabilities of human operators to design and oversee the collaborative behaviors of multiple heterogeneous UAVs. The evolution of the system is driven by the mission level objectives and supported on one hand by the progress in miniature sensors, computational power, communication and portable energy technologies and on the other hand by the advanced capabilities of embedded control and communication-oriented software. As a result the developed system enables rapid design, onboard integration and in-flight verification of multiple UAV collaborative concepts that seemed impossible just a couple of years ago. Advantages of the designed system are illustrated by a couple of scenarios that were recently developed and verified in flight by multiple cooperating UAVs. The paper concentrates on presenting the motivation and the conceptual design ideas which drive the evolution of the flight prototyping platform.
C1 [Dobrokhodov, Vladimir; Jones, Kevin; Kaminer, Isaac] Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
RP Dobrokhodov, V (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
EM vldobr@nps.edu; kdjones@nps.edu; kaminer@nps.edu
NR 11
TC 1
Z9 1
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0743-1619
BN 978-1-4799-0178-4
J9 P AMER CONTR CONF
PY 2013
BP 680
EP 685
PG 6
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BIB32
UT WOS:000327210200111
ER
PT S
AU Noble, SL
AF Noble, Sarah L.
GP IEEE
TI Control-Theoretic Treatment Scheduling for Posttraumatic Stress Disorder
SO 2013 AMERICAN CONTROL CONFERENCE (ACC)
SE Proceedings of the American Control Conference
LA English
DT Proceedings Paper
CT American Control Conference (ACC)
CY JUN 17-19, 2013
CL Washington, DC
SP Boeing, Eaton, Halliburton, Honeywell, MathWorks, Mitsubishi Elect Res Lab, Natl Instruments, United Technologies Res Ctr, Xerox, dSpace, Journal Franklin Inst, GE Global Res, Quanser, SIAM, Springer, Taylor & Francis Grp CRC Press, Wiley
ID COGNITIVE-PROCESSING THERAPY; MODEL-PREDICTIVE CONTROL; ADMINISTERED
PTSD SCALE; ADAPTIVE INTERVENTIONS; PROLONGED EXPOSURE; RAPE VICTIMS;
INVENTORY; PATTERNS; EMDR
AB Posttraumatic stress disorder (PTSD) is an acute anxiety disorder that afflicts more than one-fifth of veterans returning from conflicts in Iraq and Afghanistan. A recent study found that only a fraction of those suffering from PTSD receive adequate care. A model predictive control strategy is presented to optimize psychotherapy treatment for PTSD patients. A mathematical model is developed that captures the dynamic relationship between four psychotherapy interventions and four commonly-employed PTSD assessment scales. The model supports a model predictive control strategy in which psychotherapy treatments are scheduled to achieve a therapeutic objective while weighing exogenous factors such as treatment cost, preference, and tolerability. While this work represents only a preliminary step toward a quantitative tool for clinical use, the simulated treatment results indicate that the proposed model and control approach could provide valuable insight toward designing personalized psychotherapy schedules that increase treatment adherence, lower treatment costs, and provide PTSD patients with more effective care.
C1 US Naval Acad, Weap & Syst Engn Dept, Annapolis, MD 21401 USA.
RP Noble, SL (reprint author), US Naval Acad, Weap & Syst Engn Dept, Annapolis, MD 21401 USA.
EM noble@usna.edu
NR 32
TC 0
Z9 0
U1 1
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0743-1619
BN 978-1-4799-0178-4
J9 P AMER CONTR CONF
PY 2013
BP 722
EP 727
PG 6
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BIB32
UT WOS:000327210200118
ER
PT B
AU Chernin, D
Antonsen, TM
Vlasov, AN
Nguyen, K
Joye, CD
Cooke, SJ
Levush, B
AF Chernin, D.
Antonsen, T. M., Jr.
Vlasov, A. N.
Nguyen, K.
Joye, C. D.
Cooke, S. J.
Levush, B.
GP IEEE
TI TWT Stability for Frequencies near a Band Edge
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE band gap; forward wave; backward wave; coupled waves; oscillation
threshold
AB Using a simple model we derive a universal condition for oscillation in a traveling wave tube for frequencies near a band edge, when the adjacent band gap is small. The condition is expressed graphically as a value for the maximum allowable (stable) small signal gain as a function of the size of the band gap. As an example of the application of the general condition, a simple upper bound on the E-plane offset of a beam tunnel in a folded-waveguide TWT is obtained.
C1 [Chernin, D.] SAIC, Mclean, VA 22102 USA.
[Antonsen, T. M., Jr.] Univ Maryland, SAIC, College Pk, MD 20742 USA.
[Vlasov, A. N.] Beam Wave Res, Bethesda, MD 20814 USA.
[Nguyen, K.; Joye, C. D.; Cooke, S. J.; Levush, B.] Naval Res Lab, Washington, DC 20375 USA.
RP Chernin, D (reprint author), SAIC, Mclean, VA 22102 USA.
RI Antonsen, Thomas/D-8791-2017
OI Antonsen, Thomas/0000-0002-2362-2430
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 2
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700073
ER
PT B
AU Chernyavskiy, IA
Vlasov, AN
Levush, B
Antonsen, TM
Nguyen, KT
AF Chernyavskiy, Igor A.
Vlasov, Alexander N.
Levush, Baruch
Antonsen, Thomas M., Jr.
Nguyen, Khanh T.
GP IEEE
TI Parallel 20 Large-signal Modeling of Cascaded TWT Amplifiers
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE traveling-wave tube; broadband high power amplifier; serpentine
slow-wave structure; folded waveguide slow-wave structure; large-signal
code; parallel modeling
AB The 2.5D large-signal code TESLA-FW was recently developed with the goal to model TWT amplifiers based on the serpentine or folded-waveguide slow-wave structures. Predictions of the large-signal code, applied to the modeling of the single stage amplifiers, were found in a good agreement with the results of the 3D PIC code MAGIC, while its run-time was on orders of magnitude less. To extend applicability of the large-signal code, now we report its conversion into a parallel version, which allows us concurrently model all the stages of a multiple-beam cascaded TWT amplifiers based on serpentine or folded-waveguide slow-wave structures. Newly infroduced parallel version of TESLA-FW is applied to model a 3-stage cascaded TWT amplifier to support on-going efforts on its design and further optimization. Obtained results are compared with the predictions of the 3D PIC code MAGIC.
C1 [Chernyavskiy, Igor A.; Vlasov, Alexander N.; Levush, Baruch] Naval Res Lab, Washington, DC 20375 USA.
[Antonsen, Thomas M., Jr.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
[Nguyen, Khanh T.] Beam Wave Res Inc, Bethesda, MD 20814 USA.
RP Chernyavskiy, IA (reprint author), Naval Res Lab, Washington, DC 20375 USA.
RI Antonsen, Thomas/D-8791-2017
OI Antonsen, Thomas/0000-0002-2362-2430
NR 5
TC 0
Z9 0
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700173
ER
PT B
AU Cook, AM
Joye, CD
Calame, JP
Nguyen, KT
Chernin, DP
Vlasov, A
Abe, DK
Levush, B
AF Cook, Alan M.
Joye, Colin D.
Calame, Jeffrey P.
Nguyen, Khanh T.
Chernin, David P.
Vlasov, Alexander
Abe, David K.
Levush, Baruch
GP IEEE
TI Development of a Wideband W-band Serpentine Waveguide TWT
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE millimeter wave amplifier; serpentine folded waveguide; slow wave
structure; microfabrication
AB We are developing a wideband 95-GHz, 200-W TWT powered by a 20-kV, 122-mA elecfron beam. The serpentine waveguide circuit is fabricated by UV-LIGA using an embedded monofilament, which produces an all-copper sfructure with beam tunnel. Simulations predict 37 dB small-signal gain and 245 W maximum output power.
C1 [Cook, Alan M.; Joye, Colin D.; Calame, Jeffrey P.; Vlasov, Alexander; Abe, David K.; Levush, Baruch] US Naval Res Lab, Code 6840,4555 Overlook Ave SW, Washington, DC 20375 USA.
[Nguyen, Khanh T.] Beam Wave Res Inc, Bethesda, MD 20814 USA.
[Chernin, David P.] SAIC, Mclean, VA 22102 USA.
RP Cook, AM (reprint author), US Naval Res Lab, Code 6840,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM alan.cook@nrl.navy.mil
FU U.S. Office of Naval Research
FX This work was funded by the U.S. Office of Naval Research. The authors
wish to thank B. Albright, L. Ludeking, R. Myers, and F. Wood for
assistance.
NR 3
TC 0
Z9 0
U1 1
U2 6
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700163
ER
PT B
AU Cooke, SJ
Stantchev, GM
AF Cooke, Simon J.
Stantchev, George M.
GP IEEE
TI Conformal Time-Domain Particle-in-Cell Simulation of Vacuum Electronic
Devices with Accurate Surface Loss
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE Conformal FDTD-PIC; Ohmic surface loss; slow-wave amplifier; GPU
AB We present two algorithmic improvements to enhance accuracy for large-signal simulations of vacuum electronic amplifiers using the GPU-accelerated, 3D time-domain particle-in-cell code 'Neptune'. A new conformal (cut-cell) geometry model with a new algorithm for Ohmic surface loss accurately predicts the dispersive and dissipative electromagnetic properties of complex metal device structures.
C1 [Cooke, Simon J.; Stantchev, George M.] Naval Res Lab, Washington, DC 20375 USA.
RP Cooke, SJ (reprint author), Naval Res Lab, Code 6841,4555 Overlook Ave SW, Washington, DC 20375 USA.
EM simon.cooke@nrl.navy.mil
NR 2
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700147
ER
PT B
AU Jabotinski, V
Nguyen, K
Pasour, J
Levush, B
Abe, D
Petillo, J
AF Jabotinski, Vadim
Khanh Nguyen
Pasour, John
Levush, Baruch
Abe, David
Petillo, John
GP IEEE
TI Electrostatic Focusing for a Field Emission Electron Source
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE electron beam; electrostatic focusing; field emission; field emitter
array; Fowler-Nordheim; periodic waveguiding structure; terahertz
AB This paper presents theory and analysis of single-tip field emission and electron beam propagation in the electrostatic focusing fields. It is shown that two gate apertures with a focusing anode allow transport of narrow electron beams over long distances without need for a confining magnetic field. Physical mechanisms of the beam formation, transport, intrinsic emittance with thermal effects, the effects of the emission properties, and parametric studies are discussed, and a new concept and model of the bandgap-spread multilevel field emission is given.
C1 [Jabotinski, Vadim; Khanh Nguyen] Beam Wave Res Inc, Bethesda, MD 20814 USA.
[Pasour, John; Levush, Baruch; Abe, David] US Navy, Res Lab, Washington, DC 20375 USA.
[Petillo, John] Sci Applicat Intl Corp, Billerica, MA 01821 USA.
RP Jabotinski, V (reprint author), Beam Wave Res Inc, Bethesda, MD 20814 USA.
EM vadim.jabotinski.ctr@nrl.navy.mil
FU U. S. DARPA/MTO; ONR
FX We appreciate helpful discussions with Luis Velasquez- Garcia and
Frances Hill of MIT. This work was supported by the U. S. DARPA/MTO and
by ONR.
NR 4
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700200
ER
PT B
AU Joye, CD
Cook, AM
Calame, JP
Abe, DK
Levush, B
AF Joye, Colin D.
Cook, Alan M.
Calame, Jeffrey P.
Abe, David K.
Levush, Baruch
GP IEEE
TI Breakthrough UV-LIGA Microfabrication of Sub-mm and THz Circuits
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
AB The U.S. Naval Research Laboratory has been developing a novel UV-LIGA process to create amplifier circuits from 100 GHz through the THz. A 670 GHz EIK ladder test piece has been successfully fabricated with a 0.004 inch diameter beam tunnel, and demonstrates sub-micron fabrication accuracies. The technique is being extended to showcase capabilities at 850 GHz, and 1.03, 1.35 and 1.50 THz.
C1 [Joye, Colin D.; Cook, Alan M.; Calame, Jeffrey P.; Abe, David K.; Levush, Baruch] US Naval Res Lab, Washington, DC 20375 USA.
RP Joye, CD (reprint author), US Naval Res Lab, Code 6840, Washington, DC 20375 USA.
NR 7
TC 0
Z9 0
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700080
ER
PT B
AU Joye, CD
Cook, AM
Calame, JP
Abe, DK
Nguyen, KT
Wright, EL
Vlasov, AN
Chernyavskiy, IA
Kimura, T
Levush, B
AF Joye, Colin D.
Cook, Alan M.
Calame, Jeffrey P.
Abe, David K.
Nguyen, Khanh T.
Wright, Edward L.
Vlasov, Alexander N.
Chernyavskiy, Igor A.
Kimura, Takuji
Levush, Baruch
GP IEEE
TI Demonstration of a High Power, Wideband 220 GHz Serpentine Waveguide
Amplifier Fabricated by UV-LIGA
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
AB We present the hot test results of a 220 GHz, serpentine waveguide vacuum electron amplifier showcasing a novel embedded monofilament microfabrication technique based on UV-LIGA. The instantaneous operating bandwidth exceeds 15 GHz and the small signal gain of the circuit is over 14 dB. By varying the voltage slightly, an operating bandwidth of almost 40 GHz is realizable with a minimum circuit gain of 7 dB across the band. A maximum power of just over 60 W was obtained at the output flange of the device, corresponding to a power of almost 80 W generated in the circuit.
C1 [Joye, Colin D.; Cook, Alan M.; Calame, Jeffrey P.; Abe, David K.; Vlasov, Alexander N.; Chernyavskiy, Igor A.; Levush, Baruch] Naval Res Lab, Code 6840, Washington, DC 20375 USA.
[Nguyen, Khanh T.; Wright, Edward L.] Beam Wave Res Inc, Bethesda, MD 20814 USA.
[Kimura, Takuji] Commun & Power Ind Inc, Palo Alto, CA 94304 USA.
RP Joye, CD (reprint author), Naval Res Lab, Code 6840, Washington, DC 20375 USA.
FU DARPA; u.s. Office of Naval Research
FX This work is sponsored in part by DARPA and by the u.s. Office of Naval
Research. The authors would like to thank R. E. Myers, F. N. Wood, and
B. S. Albright for their assistance.
NR 10
TC 0
Z9 0
U1 0
U2 5
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700079
ER
PT B
AU Levush, B
Abe, D
Chernyavskiy, IA
Cooke, SJ
Vlasov, AN
Legarra, J
Nguyen, K
Wright, E
Cusick, M
Begum, R
Ramirez-Aldana, JL
Stockwell, B
Chernin, D
AF Levush, B.
Abe, D.
Chernyavskiy, I. A.
Cooke, S. J.
Vlasov, A. N.
Legarra, J.
Nguyen, K.
Wright, E.
Cusick, M.
Begum, R.
Ramirez-Aldana, J. Luis
Stockwell, B.
Chernin, D.
GP IEEE
TI A 1.8 kW Broad Band Ka-band TWT Power Booster
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE Ka-band; power booster; stop band; stability
AB A two stage 'driver-booster' TWT configuration designed to produce 1.8 kW in Ka-band will be described. The folded waveguide circuit used in the power booster is designed to meet bandwidth requirements while simultaneously eliminating the usual stop-band at 2 pi in order to avoid drive-induced oscillation.
C1 [Levush, B.; Abe, D.; Chernyavskiy, I. A.; Cooke, S. J.; Vlasov, A. N.] Naval Res Lab, Washington, DC 20375 USA.
[Legarra, J.; Nguyen, K.; Wright, E.] Beam Wave Res, Bethesda, MD 20814 USA.
[Cusick, M.; Begum, R.; Ramirez-Aldana, J. Luis; Stockwell, B.] Commun & Power Ind, Palo Alto, CA 94304 USA.
[Chernin, D.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
RP Levush, B (reprint author), Naval Res Lab, Washington, DC 20375 USA.
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 2
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700075
ER
PT B
AU Ovtchinnikov, S
Cooke, S
Mkrtchyan, M
Shtokhamer, R
Vlasov, A
Petillo, J
Levush, B
AF Ovtchinnikov, Serguei
Cooke, Simon
Mkrtchyan, Masis
Shtokhamer, Roman
Vlasov, Alexander
Petillo, John
Levush, Baruch
GP IEEE
TI Multi-Source, Complex Beamline Model Development in MICHELLE eBEAM
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE Coulomb interaction; lithography; GPU; stochastic space charge; counter
streaming
ID ELECTRON-GUN
AB Simulations of modern, high current electron beam lithography devices may require modeling of optical components and multiple electron sources that are positioned in an oblique fashion with respect to the main device axis and include counter streaming regions, where two beams are co-located in space while propagating in opposite directions. Modeling such complex multi-beam systems presents different computational challenges depending on the specific device and regime being modeled. Applications of interest require in some cases the model of both global and stochastic space charge, where the latter requires direct evaluation of Coulomb interactions. A new approach implemented in MICHELLE-eBEAM is designed to take advantage of the GPU hardware acceleration and novel algorithms to efficiently capture particle dynamics for complex beamlines. In this paper we report on our latest progress and show for a high current electron beam lithography application the achieved accuracy and performance of the new code.
C1 [Ovtchinnikov, Serguei; Mkrtchyan, Masis; Shtokhamer, Roman; Petillo, John] Sci Applicat Intl Corp, 700 Technol Pk Dr, Billerica, MA 01821 USA.
[Cooke, Simon; Vlasov, Alexander] Naval Res Lab, Washington, DC USA.
RP Ovtchinnikov, S (reprint author), Sci Applicat Intl Corp, 700 Technol Pk Dr, Billerica, MA 01821 USA.
FU DARPA; ONR a LLE
FX Work supported by DARPA, ONR a LLE .
NR 4
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700141
ER
PT B
AU Pasour, J
Wright, E
Nguyen, K
Balkcum, A
Levush, B
AF Pasour, John
Wright, Edward
Khanh Nguyen
Balkcum, Adam
Levush, Baruch
GP IEEE
TI Sheet Beam Extended Interaction Klystron (EIK) in W Band
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE Sheet beam; EIK; millimeter wave; vacuum electronic; amplifier; MAGIC;
ICEPIC; Neptune
AB A W-band sheet-beam extended interaction klysfron (EIK) has been fabricated and tested. The EIK integrates a 3-cavity circuit with our previously demonstrated 20-kV, 3.5-A beamstick. The EIK has produced a saturated peak output power of over 7.5 kW and a small-signal gain of almost 40 dB, in very good agreement with our simulations.
C1 [Pasour, John; Wright, Edward; Khanh Nguyen; Balkcum, Adam; Levush, Baruch] US Naval Res Lab, Vacuum Elect Branch, Washington, DC 20375 USA.
RP Pasour, J (reprint author), US Naval Res Lab, Vacuum Elect Branch, Washington, DC 20375 USA.
EM john.pasour@nrl.navy.mil
NR 4
TC 0
Z9 0
U1 0
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700152
ER
PT B
AU Pchelnikov, YN
Vlasov, AN
Chernin, DP
AF Pchelnikov, Yuriy N.
Vlasov, Alexander N.
Chernin, David P.
GP IEEE
TI Bi-helix SWS for High Power TWTs
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE helix; bi-helix; dispersion; periodicity; slowing down; backward wave
oscillation
AB We have studied the electromagnetic properties of a bi-helix slow wave structure surrounded by an azimuthally conducting screen formed by metal rings with and without capacitive gaps. The dependence of phase velocity on frequency and on the geometric parameters of the rings were measured on prototypes and analyzed. Novel designs of the bi-helix SWSs with circular metallization on the diaphragm supports are proposed.
C1 [Vlasov, Alexander N.] Naval Res Lab, Washington, DC 20375 USA.
RP Pchelnikov, YN (reprint author), 104 Drexelbrook Ct, Cary, NC 27519 USA.
EM yupchel@gmail.com
FU Army Research Office; Office of Naval Research
FX This work was supported by the Army Research Office and the Office of
Naval Research. The review of this paper was arranged by Editor W. L.
Menninger
NR 5
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700078
ER
PT B
AU Pchelnikov, YN
Vlasov, AN
Chernin, DP
AF Pchelnikov, Yuriy N.
Vlasov, Alexander N.
Chernin, David P.
GP IEEE
TI no image Novel SWS Designs for High Power Ka-band TWTs
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE periodicity; backward wave oscillation; dispersion characteristic;
slowing down; zigzag; helix
AB Novel wide-band slow-wave structures (SWSs) with decreased periodicity are proposed for application in high frequency, high power TWTs. Prototypes of helix circuits with turns connected by 'zigzag' lines or by a periodic row of rings connected in the longitudinal direction were fabricated and their dispersion characteristics were measured and compared. Advantages of these circuits over conventional helices are described.
C1 [Vlasov, Alexander N.] Naval Res Lab, Washington, DC 20375 USA.
[Chernin, David P.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
RP Pchelnikov, YN (reprint author), 104 Drexelbrook Ct Cary, Cary, NC 27519 USA.
EM yupchel@gmail.com
FU Army Research Office/DARPA; Office of Naval Research
FX This work was supported by the Army Research Office/DARPA and the Office
of Naval Research. We wish to thank Dr. Dean Pershing of Beam-Wave
Research, Inc. for his help with the measurements.
NR 5
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700074
ER
PT B
AU Petillo, J
Panagos, DN
Jensen, KL
AF Petillo, John
Panagos, Dimitrios N.
Jensen, Kevin L.
GP IEEE
TI Emittance and Emission from Arrays with Statistical Variation
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
AB We report on the incorporation of a model of field emitters based on a Point Charge Model (PCM) that allows for rapid and analytical representations of tip current, variation, and emission statistics and its implementation and usage in the MICHELLE Particle-In-Cell (PIC) code to model the impact of emission variation on current characteristics and emittance. Rather than cold field emission characterized by the Fowler Nordheim equation, a General Thermal-Field (GTF) emission model treats warm and hot field emission sources. We shall compare the increases in emittance and beam radius due to emission non-uniformity as modeled by assuming a Log-Normal (LN) distribution of emitter geometries. The consequences for high frequency devices shall be explored.
C1 [Petillo, John; Panagos, Dimitrios N.] Sci Applicat Int Corp, 700 Technol Pk Dr, Billerica, MA 01821 USA.
[Jensen, Kevin L.] Naval Res Lab, ESTD, Washington, DC USA.
RP Petillo, J (reprint author), Sci Applicat Int Corp, 700 Technol Pk Dr, Billerica, MA 01821 USA.
EM petilloj@saic.com
FU Office of Naval Research and SAIC IRD
FX We gratefully acknowledge support by the Office of Naval Research and
SAIC IR&D.
NR 4
TC 0
Z9 0
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700201
ER
PT B
AU Stantchev, G
Abe, D
Levush, B
Hanna, J
Chernin, D
Antonsen, T
AF Stantchev, G.
Abe, D.
Levush, B.
Hanna, Jeremy
Chernin, David
Antonsen, Thomas
GP IEEE
TI Hybrid Time-Domain Measurement and Pre-distortion of Broadband Complex
Waveforms in a Ka-band TWT Amplifier
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE traveling wave tubes; nonlinearities; microwave time-domain
measurements; wideband amplifiers; complex waveforms
AB We present a technique for time-domain measurement and predistortion of complex wideband waveforms in a Ka-band helix TWT power amplifier. The measurement technique relies on a hybrid calibration procedure that uses both single tone and wideband multi-tone calibration for characterizing the amplifier response to simultaneous excitation across its operating frequency band. We compare our measurements with simulation data from a well-established physics-based, large signal, multi-frequency spectral code, CHRISTINE [1]
C1 [Stantchev, G.; Abe, D.; Levush, B.] US Naval Res Lab, Washington, DC USA.
[Hanna, Jeremy] Beam Wave Res, Bethesda, MD USA.
[Chernin, David; Antonsen, Thomas] SAIC, Mclean, VA USA.
RP Stantchev, G (reprint author), US Naval Res Lab, Washington, DC USA.
EM george.stantchev@nrl.navy.mil
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 3
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700176
ER
PT B
AU Vlasov, AN
Chernyavskiy, IA
Joye, CD
Cook, AM
Calame, JP
Levush, B
Chernin, D
Antonsen, TM
Nguyen, KT
AF Vlasov, Alexander N.
Chernyavskiy, Igor A.
Joye, Colin D.
Cook, Alan M.
Calame, Jeffrey P.
Levush, Baruch
Chernin, David
Antonsen, Thomas M., Jr.
Nguyen, Khanh T.
GP IEEE
TI Modeling of the NRL G-Band TWT Amplifier Using the CHRISTINE and TESLA
Simulation Codes
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE Folded waveguide; serpentine waveguide; modeling; slow wave structure;
dispersion; TWT amplifiers
AB Comparisons between predictions of the NRL large signal codes CHRISTINE and TESLA-FW and measurements of small signal gain of NRL's G-Band serpentine waveguide TWT are presented. Results of a sensitivity study of the effects on gain of the circuit dispersion allow us to identify the most critical physical circuit dimensions for TWT design and to quantify required circuit fabrication tolerances.
C1 [Vlasov, Alexander N.; Chernyavskiy, Igor A.; Joye, Colin D.; Cook, Alan M.; Calame, Jeffrey P.; Levush, Baruch] Naval Res Lab, Washington, DC 20375 USA.
[Chernin, David; Antonsen, Thomas M., Jr.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
[Nguyen, Khanh T.] Beam Wave Res Inc, Bethesda, MD 20814 USA.
RP Vlasov, AN (reprint author), Naval Res Lab, Washington, DC 20375 USA.
RI Antonsen, Thomas/D-8791-2017
OI Antonsen, Thomas/0000-0002-2362-2430
FU US Office of Naval Research
FX This work was supported by the US Office of Naval Research.
NR 5
TC 0
Z9 0
U1 1
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700145
ER
PT B
AU Vlasov, AN
Chernyavskiy, IA
Levush, B
Chernin, D
Antonsen, TM
Nguyen, KT
AF Vlasov, Alexander N.
Chernyavskiy, Igor A.
Levush, Baruch
Chernin, David
Antonsen, Thomas M., Jr.
Nguyen, Khanh T.
GP IEEE
TI Dispersive Properties of Serpentine and Folded Waveguide Circuits
SO 2013 IEEE 14TH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC)
LA English
DT Proceedings Paper
CT 14th IEEE International Vacuum Electronics Conference (IVEC)
CY MAY 21-23, 2013
CL Paris, FRANCE
SP IEEE, ESA, EDS, THALES, CBL Ceram Ltd, CST
DE Folded waveguide; serpentine waveguide; slow wave structure; dispersion;
TWT amplifiers
ID TUBES
AB Results are reported from a comprehensive study of the dispersive properties of serpentine and folded waveguide circuits. The dependence of various features of the dispersion on geometrical parameters is illustrated. Comparisons with predictions of a model circuit consisting of a periodically loaded transmission line are presented.
C1 [Vlasov, Alexander N.; Chernyavskiy, Igor A.; Levush, Baruch] Naval Res Lab, Washington, DC 20375 USA.
[Chernin, David; Antonsen, Thomas M., Jr.] Sci Applicat Int Corp, Mclean, VA 22102 USA.
[Nguyen, Khanh T.] Beam Wave Res Inc, Bethesda, MD 20814 USA.
RP Vlasov, AN (reprint author), Naval Res Lab, Washington, DC 20375 USA.
RI Antonsen, Thomas/D-8791-2017
OI Antonsen, Thomas/0000-0002-2362-2430
FU US Office of Naval Research
FX Work supported by the US Office of Naval Research.
NR 8
TC 0
Z9 0
U1 1
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5977-1; 978-1-4673-5976-4
PY 2013
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BHY61
UT WOS:000327022700144
ER
PT S
AU Christian, MP
Smith, AN
Firebaugh, SL
AF Christian, Matthew P.
Smith, Andrew N.
Firebaugh, Samara L.
BE Ferrero, A
TI Numerical Model for Predicting and Managing Heat Dissipation from a
Neural Probe
SO 2013 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY
CONFERENCE (I2MTC)
SE IEEE Instrumentation and Measurement Technology Conference
LA English
DT Proceedings Paper
CT IEEE International Instrumentation and Measurement Technology Conference
(I2MTC)
CY MAY 06-09, 2013
CL Minneapolis, MN
SP IEEE, IEEE Instrumentat & Measurement Soc, Boston Sci, Natl Instruments, Medtronic, Natl Appl Res Lab, Instrument Technol Res Ctr
DE neural probes; bioheat transfer; finite element analysis; modeling
ID STIMULATION; BRAIN
AB Use of stimulating neural probes has increased in an effort to better understand neural pathways. Current designs using light as a stimulating impulse externally couple the light into the probe. Relocating the light source to the probe tip would improve the flexibility of the technique; however, this approach would generate heat within the embedded probe. Minor temperature excursions can easily damage tissues under study, creating inaccurate results and/or damaging the tissue. A model has been created using COMSOL for the thermal effects of these heated probes in the brain. The model includes blood perfusion and metabolic processes. The model was used to investigate the effect of different geometric parameters on the temperature excursion. It was observed that the maximum temperature change decreases with insertion depth and decreases as the heated area of the probe is increased. The model was also used to study the effect of extending the probe beyond the heated region. This resulted in a significant reduction in temperature excursion. The model has been experimentally validated through physical tests using an Agar gel as a neural tissue simulant.
C1 [Christian, Matthew P.; Smith, Andrew N.] US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
RP Christian, MP (reprint author), US Naval Acad, Dept Mech Engn, Annapolis, MD 21402 USA.
EM m131074@usna.edu; ansmith@usna.edu; firebaug@usna.edu
NR 10
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1091-5281
BN 978-1-4673-4621-4
J9 IEEE IMTC P
PY 2013
BP 1420
EP 1425
PG 6
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA BHX22
UT WOS:000326900400259
ER
PT S
AU Calibo, TK
Blanco, JA
Firebaugh, SL
AF Calibo, Taylor K.
Blanco, Justin A.
Firebaugh, Samara L.
BE Ferrero, A
TI Cognitive Stress Recognition
SO 2013 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY
CONFERENCE (I2MTC)
SE IEEE Instrumentation and Measurement Technology Conference
LA English
DT Proceedings Paper
CT IEEE International Instrumentation and Measurement Technology Conference
(I2MTC)
CY MAY 06-09, 2013
CL Minneapolis, MN
SP IEEE, IEEE Instrumentat & Measurement Soc, Boston Sci, Natl Instruments, Medtronic, Natl Appl Res Lab, Instrument Technol Res Ctr
DE Biomedical Signal Processing; Biomedical Electronics; Brain Computer
Interface; Electroencephalography
ID RESPONSES; WORKLOAD
AB This work explores using a low-cost electroencephalography (EEG) headset to quantify the human response to stressed and non-stressed states. We used a Stroop color-word interference test to elicit a mild stress response in 18 test subjects while recording scalp EEG. EEG signals were analyzed using an algorithm that computed the root mean square voltage in the beta, alpha, and theta bands immediately following the presentation of the Stroop stimuli. These features were then used as inputs to logistic regression and k-nearest neighbor classifiers. Results showed that there was a median accuracy of 73.96% for classifying mental state using the O1 sensor on the Emotiv headset.
C1 [Calibo, Taylor K.; Blanco, Justin A.; Firebaugh, Samara L.] US Naval Acad, Elect & Comp Engn Dept, Annapolis, MD 21402 USA.
RP Calibo, TK (reprint author), US Naval Acad, Elect & Comp Engn Dept, Annapolis, MD 21402 USA.
EM m130828@usna.edu; blanco@usna.edu; firebaug@usna.edu
NR 11
TC 10
Z9 10
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1091-5281
BN 978-1-4673-4621-4
J9 IEEE IMTC P
PY 2013
BP 1471
EP 1475
PG 5
WC Instruments & Instrumentation
SC Instruments & Instrumentation
GA BHX22
UT WOS:000326900400269
ER
PT J
AU Chand, D
Parrish, DA
Shreeve, JM
AF Chand, Deepak
Parrish, Damon A.
Shreeve, Jean'ne M.
TI Di(1H-tetrazol-5-yl) methanone oxime and 5,5 '-(hydrazonomethylene)
bis(1H-tetrazole) and their salts: a family of highly useful new
tetrazoles and energetic materials
SO JOURNAL OF MATERIALS CHEMISTRY A
LA English
DT Article
ID HYDROXYLAMINE
AB A family of new nitrogen-rich energetic tetrazoles, di(1H-tetrazol-5-yl) methanone oxime and 5,5 '-(hydrazonomethylene) bis(1H-tetrazole), was synthesized in very good yields from inexpensive starting materials. These tetrazoles have excellent thermal stabilities and very high nitrogen content as well as very acceptable impact and friction sensitivities and were employed as precursors to nitrogenrich energetic salts. The hydrazinium and hydroxyl ammonium salts of 5,5 '-(hydrazonomethylene)bis( 1H-tetrazole) exhibit excellent detonation velocities (9050 m s(-1) and 8839 m s(-1), respectively) as well as very good detonation pressures and thermal stabilities. The new compounds may have the potential to replace current nitrogen-rich energetic materials.
C1 [Chand, Deepak; 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 [N00014-12-1-0536, N00014-11-AF-0-0002]
FX The authors gratefully acknowledge the support of ONR
(N00014-12-1-0536), and (N00014-11-AF-0-0002) - Dr Clifford Bedford.
NR 33
TC 22
Z9 22
U1 3
U2 23
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2050-7488
EI 2050-7496
J9 J MATER CHEM A
JI J. Mater. Chem. A
PY 2013
VL 1
IS 48
BP 15383
EP 15389
DI 10.1039/c3ta13425c
PG 7
WC Chemistry, Physical; Energy & Fuels; Materials Science,
Multidisciplinary
SC Chemistry; Energy & Fuels; Materials Science
GA 258GI
UT WOS:000327446900028
ER
PT S
AU Pique, A
Auyeung, RCY
Smith, AT
Kim, H
Mattews, SA
Charipar, NA
Kirleis, MA
AF Pique, Alberto
Auyeung, Ray C. Y.
Smith, Andrew T.
Kim, Heungsoo
Mattews, Scott A.
Charipar, Nicholas A.
Kirleis, Matthew A.
BE Klotzbach, U
Lu, Y
Washio, K
TI Laser Transfer of Reconfigurable Patterns With a Spatial Light Modulator
SO LASER-BASED MICRO- AND NANOPACKAGING AND ASSEMBLY VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Laser-Based Micro- and Nanopackaging and Assembly VII
(LBMP) as a part of LASE Photonics West
CY FEB 06-07, 2013
CL San Francisco, CA
SP SPIE
DE Non-Lithographic Processes; Laser Direct-Write; Laser Decal Transfer;
Spatial Light Modulator; Digital Micromirror Devices; Interconnects;
Metamaterials
ID DIRECT-WRITE; FABRICATION
AB Laser forward transfer of arbitrary and complex reconfigurable structures has recently been demonstrated using a spatial light modulator (SLM). The SLM allows the spatial distribution of the laser pulse, required by the laser transfer process, to be modified for each pulse. The programmable image on the SLM spatially modulates the intensity profile of the laser beam, which is then used to transfer a thin layer of material reproducing the same spatial pattern onto a substrate. The combination of laser direct write (LDW) with a SLM is unique since it enables LDW to operate not only in serial fashion like other direct write techniques but instead reach a level in parallel processing not possible with traditional digital fabrication methods. This paper describes the use of Digital Micromirror Devices or DMDs as SLMs in combination with visible (lambda = 532 nm) nanosecond lasers. The parallel laser printing of arrayed structures with a single laser shot is demonstrated together with the full capabilities of SLMs for laser printing reconfigurable patterns of silver nano-inks. Finally, an overview of the unique advantages and capabilities of laser forward transfer with SLMs is presented.
C1 [Pique, Alberto; Auyeung, Ray C. Y.; Kim, Heungsoo; Mattews, Scott A.; Charipar, Nicholas A.; Kirleis, Matthew A.] Naval Res Lab, Mat Sci & Technol Div, Code 6364, Washington, DC 20375 USA.
[Smith, Andrew T.] Nova Res Inc, Alexandria, VA 22308 USA.
RP Pique, A (reprint author), Naval Res Lab, Mat Sci & Technol Div, Code 6364, Washington, DC 20375 USA.
EM pique@nrl.navy.mil
FU Office of Naval Research
FX This work was sponsored by the Office of Naval Research.
NR 16
TC 6
Z9 6
U1 0
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9377-4
J9 PROC SPIE
PY 2013
VL 8608
AR UNSP 86080K
DI 10.1117/12.2005345
PG 9
WC Nanoscience & Nanotechnology; Optics; Physics, Applied
SC Science & Technology - Other Topics; Optics; Physics
GA BIC32
UT WOS:000327383200015
ER
PT J
AU Stanney, KM
Cohn, J
Milham, L
Hale, K
Darken, R
Sullivan, J
AF Stanney, Kay M.
Cohn, Joseph
Milham, Laura
Hale, Kelly
Darken, Rudy
Sullivan, Joseph
TI Deriving Training Strategies for Spatial Knowledge Acquisition From
Behavioral, Cognitive, and Neural Foundations
SO MILITARY PSYCHOLOGY
LA English
DT Article
DE spatial knowledge acquisition; navigation; virtual worlds; virtual
environments
ID LARGE-SCALE SPACE; VIRTUAL ENVIRONMENTS; REAL-WORLD; CONFIGURATIONAL
KNOWLEDGE; LEARNING-DISABILITIES; PLACE CELLS; DESK-TOP; NAVIGATION;
HIPPOCAMPUS; MEMORY
AB While much has been made of the potential uses for virtual environment (VE) technologies as training aids, there are few guidelines and strategies to inform system development from the user's perspective. Assumptions are that a human factors-based evaluation will ensure optimal performance, transferring training from virtual to real worlds; however, there are complex, yet unexplored, issues surrounding system optimization and employment. A comprehensive investigation into the foundations of training, traversing levels of performance analysis, from overt behavioral responses to the less explicit neuronal patterns, is proposed from which optimal training strategies can be inferred and system development guidelines deduced.
C1 [Stanney, Kay M.; Milham, Laura; Hale, Kelly] Design Interact Inc, Oviedo, FL USA.
[Cohn, Joseph] Off Naval Res, Human & Bioengn Syst Div, Arlington, VA 22217 USA.
[Darken, Rudy; Sullivan, Joseph] Naval Post Grad Sch, MOVES Inst, Monterey, CA USA.
RP Stanney, KM (reprint author), 1221 E Broadway,Suite 110, Oviedo, FL 32765 USA.
EM kay@designinteractive.net
NR 61
TC 2
Z9 2
U1 3
U2 7
PU AMER PSYCHOLOGICAL ASSOC
PI WASHINGTON
PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 USA
SN 0899-5605
EI 1532-7876
J9 MIL PSYCHOL
JI Milit. Psychol.
PY 2013
VL 25
IS 3
SI SI
BP 191
EP 205
DI 10.1037/h0094962
PG 15
WC Psychology, Multidisciplinary
SC Psychology
GA 253BY
UT WOS:000327058000003
ER
PT J
AU Claussen, JC
Algar, WR
Hildebrandt, N
Susumu, K
Ancona, MG
Medintz, IL
AF Claussen, Jonathan C.
Algar, W. Russ
Hildebrandt, Niko
Susumu, Kimihiro
Ancona, Mario G.
Medintz, Igor L.
TI Biophotonic logic devices based on quantum dots and temporally-staggered
Forster energy transfer relays
SO NANOSCALE
LA English
DT Article
ID MOLECULAR LOGIC; GOLD NANOPARTICLES; GATE OPERATIONS; LIVING CELLS;
HALF-ADDER; METAL-IONS; DNA; FLUORESCENCE; SWITCHES; FRET
AB Integrating photonic inputs/outputs into unimolecular logic devices can provide significantly increased functional complexity and the ability to expand the repertoire of available operations. Here, we build upon a system previously utilized for biosensing to assemble and prototype several increasingly sophisticated biophotonic logic devices that function based upon multistep Forster resonance energy transfer (FRET) relays. The core system combines a central semiconductor quantum dot (QD) nanoplatform with a long-lifetime Tb complex FRET donor and a near-IR organic fluorophore acceptor; the latter acts as two unique inputs for the QD-based device. The Tb complex allows for a form of temporal memory by providing unique access to a time-delayed modality as an alternate output which significantly increases the inherent computing options. Altering the device by controlling the configuration parameters with biologically based self-assembly provides input control while monitoring changes in emission output of all participants, in both a spectral and temporal-dependent manner, gives rise to two input, single output Boolean Logic operations including OR, AND, INHIBIT, XOR, NOR, NAND, along with the possibility of gate transitions. Incorporation of an enzymatic cleavage step provides for a set-reset function that can be implemented repeatedly with the same building blocks and is demonstrated with single input, single output YES and NOT gates. Potential applications for these devices are discussed in the context of their constituent parts and the richness of available signal.
C1 [Ancona, Mario G.] US Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA.
[Claussen, Jonathan C.] George Mason Univ, Coll Sci, Fairfax, VA 22030 USA.
[Algar, W. Russ] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada.
[Hildebrandt, Niko] Univ Paris 11, Inst Elect Fondamentale, F-91405 Orsay, France.
[Susumu, Kimihiro] Sotera Def Solut, Annapolis Jct, MD 20701 USA.
EM Igor.medintz@nrl.navy.mil
OI Claussen, Jonathan/0000-0001-7065-1077
FU NRL; NRL NSI; ONR; DARPA; DTRA-JSTO MIPR [B112582M]; European
Commission; University of British Columbia; Canada Research Chair;
Canada Foundation for Innovation (CFI)
FX The authors acknowledge NRL, NRL NSI, ONR, DARPA, DTRA-JSTO MIPR no.
B112582M, the European Commission (FP7 project Nanognostics), the
University of British Columbia, a Canada Research Chair (Tier 2, WRA)
and the Canada Foundation for Innovation (CFI) for financial support.
The authors thank Lumiphore, Inc. for the Lumi4-Tb reagents and
Invitrogen Life Sciences for the QDs.
NR 86
TC 40
Z9 40
U1 9
U2 71
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 2013
VL 5
IS 24
BP 12156
EP 12170
DI 10.1039/c3nr03655c
PG 15
WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials
Science, Multidisciplinary; Physics, Applied
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 259DP
UT WOS:000327507900020
PM 24056977
ER
PT S
AU Logan, JT
Holland, SS
Schaubert, DH
Kindt, RW
Vouvakis, MN
AF Logan, John T.
Holland, Steven S.
Schaubert, Daniel H.
Kindt, Rick W.
Vouvakis, Marinos N.
GP IEEE
TI A Review of Planar Ultrawideband Modular Antenna (PUMA) Arrays
SO PROCEEDINGS OF 2013 URSI INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC
THEORY (EMTS)
SE URSI International Symposium on Electromagnetic Theory
LA English
DT Proceedings Paper
CT URSI International Symposium on Electromagnetic Theory (EMTS)
CY MAY 20-24, 2013
CL Int Union Radio Sci Japanese Comm, Commiss B, Hiroshima, JAPAN
SP Int Union Radio Sci, Inst Elect, Informat & Commun Engineers, Elect Soc
HO Int Union Radio Sci Japanese Comm, Commiss B
AB Planar Ultrawideband Modular Antenna (PUMA) arrays are low-cost, wide-scan, and low-cross polarization dual-polarized UWB arrays that combine excellent electrical performance with convenient and practical feeding/fabrication processes. Each member of the PUMA array family consists of tightly coupled horizontal dipoles over a ground plane with novel feeding schemes that enable simple PCB fabrication. This feeding eliminates the need for baluns, "cable organizers," and other external support mechanisms to produce stand-alone, high-efficiency radiators. Additionally, all PUMA arrays consist of dual-offset dual-polarized lattice arrangements for modular, tile-based assembly. This paper will review the basic operation principles of the PUMA arrays followed by the technological evolution of the PUMA array family. Fabricated PUMA arrays and full-wave simulations of structures that can be manufacutured with standard fabrication technologies will be shown along with results.
C1 [Logan, John T.; Holland, Steven S.; Schaubert, Daniel H.; Vouvakis, Marinos N.] UMass Amherst, ECE, Amherst, MA 01003 USA.
[Kindt, Rick W.] Naval Res Lab, Radar Div, Washington, DC 20375 USA.
RP Logan, JT (reprint author), UMass Amherst, ECE, Amherst, MA 01003 USA.
EM logan@ecs.umass.edu; sholland@ecs.umass.edu; schaubert@ecs.umass.edu;
vouvakis@ecs.umass.edu; rick.kindt@nrl.navy.mil
OI Logan, John/0000-0002-5174-6588
NR 13
TC 3
Z9 3
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2163-405X
BN 978-1-4673-4939-0; 978-4-88552-276-5
J9 URSI INT SYM ELECT
PY 2013
BP 868
EP 871
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA BIA80
UT WOS:000327180500222
ER
PT S
AU Chatterjee, D
Rao, SM
Kluskens, MS
AF Chatterjee, D.
Rao, S. M.
Kluskens, M. S.
GP IEEE
TI Improved Evaluation of Sommerfeld Integrals for Microstrip Antenna
Problems
SO PROCEEDINGS OF 2013 URSI INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC
THEORY (EMTS)
SE URSI International Symposium on Electromagnetic Theory
LA English
DT Proceedings Paper
CT URSI International Symposium on Electromagnetic Theory (EMTS)
CY MAY 20-24, 2013
CL Int Union Radio Sci Japanese Comm, Commiss B, Hiroshima, JAPAN
SP Int Union Radio Sci, Inst Elect, Informat & Commun Engineers, Elect Soc
HO Int Union Radio Sci Japanese Comm, Commiss B
ID MEDIA GREENS-FUNCTIONS; LAYERED MEDIA; TAILS
AB An improved technique for accurate evaluation of the Sommerfeld integrals appearing in the G(zx) component single layer microstrip Green's function is described here that utilizes closed-form evaluation of the infinite tail, and numerical integration of a finite integral. The overall method avoids: (a) any pole calculations, and, (b) the traditional large argument approximation of the Bessel function of the Sommerfeld integrand. Initial numerical results from this proposed method are included. Since the method avoids any pole calculations, it can be expected to provide improvement for full-wave analysis of a wider class of microstrip patches on electrically thick substrates.
C1 [Chatterjee, D.] UMKC, CSEE Dept, 570-F Flarsheim Hall,5110 Rockhill Rd, Kansas City, MO 64110 USA.
[Rao, S. M.; Kluskens, M. S.] US Navy, Div Radar, Washington, DC 20375 USA.
RP Chatterjee, D (reprint author), UMKC, CSEE Dept, 570-F Flarsheim Hall,5110 Rockhill Rd, Kansas City, MO 64110 USA.
EM chatd@umkc.edu
FU ASEE; Office of Naval Research under an NRL 6.2 Base Program
FX The primary author gratefully acknowledges the financial support from
ASEE Summer Faculty Fellowship program, during the course of this
investigation from June to August 2012. This work was sponsored by the
Office of Naval Research under an NRL 6.2 Base Program. It is a pleasure
to acknowledge the generous help of Dr. Michael Shell with various
commands in using the LATEXsoftware for preparation of this manuscript.
NR 15
TC 3
Z9 3
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2163-405X
BN 978-1-4673-4939-0; 978-4-88552-276-5
J9 URSI INT SYM ELECT
PY 2013
BP 981
EP 984
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA BIA80
UT WOS:000327180500253
ER
PT J
AU Carter, KL
Ramlall, R
Tummala, M
McEachen, J
AF Carter, Kaylene L.
Ramlall, Rohan
Tummala, Murali
McEachen, John
GP ION
TI Bandwidth Efficient ATSC TDOA Positioning in GPS-Denied Environments
SO PROCEEDINGS OF THE 2013 INTERNATIONAL TECHNICAL MEETING OF THE INSTITUTE
OF NAVIGATION
LA English
DT Proceedings Paper
CT International Technical Meeting of the Institute-of-Navigation
CY JAN 27-29, 2013
CL San Diego, CA
SP Inst Nav
AB It is widely known that GPS is unreliable in indoor environments due to its low signal strength and high frequency [1], and thus some type of system complementary to GPS is required for navigation in indoor environments. In contrast with GPS, certain radio frequency (RF) signals of opportunity (SoOP) provide high powered, low frequency signals. SoOP are signals that can be used for positioning, navigation, and timing (PNT) even though their design intent is for applications other than PNT [2]. The Advanced Television Systems Committee (ATSC) signal is designed for digital television transmission, yet the exploitation of its recurring training sequences and known transmitter locations allows positioning estimates to be made.
The objective of this research is to use ATSC signals to produce two-dimensional indoor positioning solutions. The recurring pseudo-random noise (PN) sequence embedded in the signal may be used in cross-correlation to produce time of arrival (ToA) information. A reference station (known position) and mobile station (unknown position) each measure the time of arrival of DTV signals from three or more TV towers. The clocks of both stations are synchronized, and the reference only shares its ToA measurements with the mobile; unlike conventional time difference of arrival (TDoA) where the reference shares the entire received signal with the mobile [3]. A least squares algorithm is then implemented to compute a TDoA-based position estimate.
With thousands of DTV towers across the North American continent, the proposed scheme could be applied anywhere there is reception from at least three TV towers. An advantage of DTV positioning is that it does not require any changes to the existing DTV infrastructure. The only additions required are the monitor receiver, a user receiver, and a communications link between the two.
This paper presents actual experimental results of the aforementioned TDoA positioning scheme using the ATSC signal in San Diego, CA. Dynamic indoor and stationary open-sky test results are presented representing worst and best case scenarios [4]. The hardware platform used is the Universal Software Radio Peripheral (USRP) N210. A review of current literature on the use of the USRP did not turn up any results on its use for positioning using the ATSC signal.
The experimental results demonstrate that the positioning scheme is capable of producing meter level (order of magnitude) positioning accuracy in outdoor environments and tens of meters (order of magnitude) positioning accuracy in indoor environments. The effects that factors such as TV tower elevation, power transmission, and TV tower geometry have on the accuracy of the estimated ranges, and thus on overall positioning accuracy, are also discussed.
C1 [Carter, Kaylene L.; Tummala, Murali] Naval Postgrad Sch, Monterey, CA 93943 USA.
RP Carter, KL (reprint author), Naval Postgrad Sch, Monterey, CA 93943 USA.
NR 15
TC 1
Z9 1
U1 1
U2 2
PU INST NAVIGATION
PI WASHINGTON
PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 USA
PY 2013
BP 717
EP 725
PG 9
WC Remote Sensing
SC Remote Sensing
GA BHZ13
UT WOS:000327063800070
ER
PT S
AU Hernandez, R
Faella, J
AF Hernandez, Robert
Faella, John
GP IEEE
TI Towards Policy and Guidelines for the Selection of Computational Engines
SO 2013 7TH ANNUAL IEEE INTERNATIONAL SYSTEMS CONFERENCE (SYSCON 2013)
SE Annual IEEE Systems Conference
LA English
DT Proceedings Paper
CT 7th Annual IEEE International Systems Conference (SysCon)
CY APR 15-18, 2013
CL Orlando, FL
SP IEEE
DE computer architecture selection; computer architecture evaluation;
support vector machines; neural machine interface; lower limb control;
wounded warrior
AB Much research has been performed that concentrates on providing processing throughput enhancements to existing algorithms. Many systems have performance requirements that constrain their volume and/or power consumption. For volume and power consumption constrained systems, throughput cannot be the only decision factor when selecting a computational engine. Typical studies can aid in the selection of computational engines that meet the throughput requirements of a system, but may be of little help with respect to the volume, power and thermal constraints. This paper takes a different approach to help provide a different perspective on the constrained design problem. The research performed in this paper emphasizes the cost due to the power, size and Non-Recurring Engineering (NRE) costs of various computational engines. The computational engines researched in this paper are: Central Processing Unit (CPU), mobile CPU, Digital Signal Processor (DSP), and mobile Graphics Processing Unit (GPU). The various architectures are compared against each other with respect to throughput, power, size and NRE costs. The authors hope that the process outlined in this paper may serve as a possible guideline for other Systems Engineers to perform similar Analysis of Alternatives of computational engines. Furthermore, the authors hope that the methods used for the relative performance evaluations will serve as a starting point to help shape policy in the selection of computational engines for future designs.
C1 [Hernandez, Robert; Faella, John] Naval Undersea Warfare Ctr, Torpedo Syst Dept, Newport, RI 02841 USA.
RP Hernandez, R (reprint author), Naval Undersea Warfare Ctr, Torpedo Syst Dept, Newport, RI 02841 USA.
EM robert.hernandez2@navy.mil; john.faella@navy.mil
NR 27
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-7620
BN 978-1-4673-3108-1; 978-1-4673-3107-4
J9 ANN IEEE SYST CONF
PY 2013
BP 88
EP 95
PG 8
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA BHV65
UT WOS:000326754400016
ER
PT S
AU Vaneman, WK
Jaskot, RD
AF Vaneman, Warren K.
Jaskot, Roger D.
GP IEEE
TI A Criteria-Based Framework for Establishing System of Systems Governance
SO 2013 7TH ANNUAL IEEE INTERNATIONAL SYSTEMS CONFERENCE (SYSCON 2013)
SE Annual IEEE Systems Conference
LA English
DT Proceedings Paper
CT 7th Annual IEEE International Systems Conference (SysCon)
CY APR 15-18, 2013
CL Orlando, FL
SP IEEE
DE System of Systems; Governance
AB Net-centricity is forcing the evolution of system of systems (SoS). One aspect of SoS that has been essentially ignored is SoS governance. Governance is the set of rules, policies, and decision-making criteria that will guide the SoS to achieving its goals and objectives. In this paper, we join the attributes of governance practices found in the IT community with known SoS types and characteristics to develop a criteria-based framework for SoS governance.
C1 [Vaneman, Warren K.] Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA.
[Jaskot, Roger D.] Space Field Act, Space & Naval Warfare Syst Command, Chantilly, VA USA.
RP Vaneman, WK (reprint author), Naval Postgrad Sch, Dept Syst Engn, Monterey, CA 93943 USA.
NR 6
TC 1
Z9 1
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-7620
BN 978-1-4673-3108-1; 978-1-4673-3107-4
J9 ANN IEEE SYST CONF
PY 2013
BP 491
EP 496
PG 6
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA BHV65
UT WOS:000326754400077
ER
PT S
AU Heitmeyer, CL
AF Heitmeyer, Constance L.
GP IEEE
TI Model-based Software Development: Benefits and Barriers
SO 2013 IEEE 7TH INTERNATIONAL CONFERENCE ON SOFTWARE SECURITY AND
RELIABILITY (SERE)
SE International Conference on Software Security and Reliability
LA English
DT Proceedings Paper
CT 7th IEEE International Conference on Software Security and Reliability
(SERE)
CY JUN 18-20, 2013
CL Gaithersburg, MD
SP IEEE, Natl Inst Stand & Technol, IEEE Reliabil Soc, IEEE Comp Soc
C1 US Naval Res Lab, Washington, DC 20375 USA.
RP Heitmeyer, CL (reprint author), US Naval Res Lab, Washington, DC 20375 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2378-3877
BN 978-0-7695-5021-3; 978-1-4799-0406-8
J9 INT CONF SOFTW SECUR
PY 2013
BP XVII
EP XVIII
PG 2
WC Computer Science, Software Engineering; Computer Science, Theory &
Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BHZ96
UT WOS:000327102200001
ER
PT S
AU Kam, C
Kompella, S
Nguyen, GD
Wieselthier, JE
Ephremides, A
AF Kam, Clement
Kompella, Sastry
Nguyen, Gam D.
Wieselthier, Jeffrey E.
Ephremides, Anthony
GP IEEE
TI Multicast Throughput Stability Analysis for Cognitive Cooperative Random
Access
SO 2013 PROCEEDINGS IEEE INFOCOM
SE IEEE INFOCOM
LA English
DT Proceedings Paper
CT 32nd IEEE INFOCOM Conference
CY APR 14-19, 2013
CL Turin, ITALY
SP IEEE
ID MULTIPACKET RECEPTION; STABLE THROUGHPUT; MULTIPLE-ACCESS; PROTOCOL
DESIGN; SLOTTED ALOHA; CAPABILITY
AB In this work, we investigate the queue stability of a two-user cognitive radio system with multicast traffic. We study the impact of network-level cooperation, in which one of the nodes can relay the packets of the other user that are not received at the destinations. Under this approach, if a packet transmitted by the primary user is not successfully received by the destination set but is captured by the secondary source, then the secondary user assumes responsibility for completing the transmission of the packet; therefore, the primary releases it from its queue, enabling it to process the next packet. We demonstrate that the stability region of this cooperative approach is larger than that of the noncooperative approach, which translates into a benefit for both users of this multicast system. Our system model allows for the possibility of multipacket reception, and the optimal transmission strategies for different levels of multipacket reception capability are observed in our numerical results.
C1 [Kam, Clement; Kompella, Sastry; Nguyen, Gam D.] Naval Res Lab, Div Informat Technol, Washington, DC USA.
[Wieselthier, Jeffrey E.] Wieselthier Res, Silver Spring, MD USA.
[Ephremides, Anthony] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD USA.
RP Kam, C (reprint author), Naval Res Lab, Div Informat Technol, Washington, DC USA.
FU Office of Naval Research
FX This work was supported by the Office of Naval Research.
NR 11
TC 2
Z9 2
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0743-166X
BN 978-1-4673-5946-7
J9 IEEE INFOCOM SER
PY 2013
BP 170
EP 174
PG 5
WC Computer Science, Hardware & Architecture; Engineering, Electrical &
Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA BHQ33
UT WOS:000326335200042
ER
PT J
AU Denham, G
Schenck, H
Schulze, M
Wakefield, M
Walther, U
AF Denham, G.
Schenck, H.
Schulze, M.
Wakefield, M.
Walther, U.
TI LOCAL COHOMOLOGY OF LOGARITHMIC FORMS
SO ANNALES DE L INSTITUT FOURIER
LA English
DT Article
DE hyperplane arrangement; logarithmic; differential form; free divisor
ID LINEAR FREE DIVISORS; FREE RESOLUTION; ARRANGEMENT; MODULE; HYPERPLANES;
DERIVATIONS; COMPLEMENT; POWERS; CURVE
AB Let Y be a divisor on a smooth algebraic variety X. We investigate the geometry of the Jacobian scheme of Y, homological invariants derived from logarithmic differential forms along Y, and their relationship with the property that Y be a free divisor. We consider arrangements of hyperplanes as a source of examples and counterexamples. In particular, we make a complete calculation of the local cohomology of logarithmic forms of generic hyperplane arrangements.
C1 [Denham, G.] Univ Western Ontario, Dept Math, London, ON N6A 5E7, Canada.
[Schenck, H.] Univ Illinois, Dept Math, Urbana, IL 61801 USA.
[Schulze, M.] Univ Kaiserslautern, Dept Math, D-67663 Kaiserslautern, Germany.
[Wakefield, M.] US Naval Acad, Dept Math, Annapolis, MD 21402 USA.
[Walther, U.] Purdue Univ, Dept Math, W Lafayette, IN 47907 USA.
RP Denham, G (reprint author), Univ Western Ontario, Dept Math, London, ON N6A 5E7, Canada.
EM gdenham@uwo.ca; schenck@math.uiuc.edu; mschulze@mathematik.uni-kl.de;
wakefiel@usna.edu; walther@math.purdue.edu
FU NSERC; NSA [H98230-11-1-0170]; NSF [DMS-1068754]; Office of Naval
Research; NSF grant [DMS-0901123]
FX G.D. supported by NSERC.; H.S. supported by NSA H98230-11-1-0170, NSF
DMS-1068754.; M.W. partially supported by the Office of Naval Research.;
U.W. supported by NSF grant DMS-0901123.
NR 39
TC 3
Z9 3
U1 0
U2 0
PU ANNALES INST FOURIER
PI ST MARTIN D HERES CEDEX
PA INST MATHEMATIQUES PURES BOITE POSTALE 116, 38402 ST MARTIN D HERES
CEDEX, FRANCE
SN 0373-0956
J9 ANN I FOURIER
JI Ann. Inst. Fourier
PY 2013
VL 63
IS 3
BP 1177
EP 1203
PG 27
WC Mathematics
SC Mathematics
GA 252HF
UT WOS:000326995000011
ER
PT S
AU Charipar, NA
Charipar, KM
Kim, H
Kirleis, MA
Auyeung, RCY
Smith, AT
Mathews, SA
Pique, A
AF Charipar, Nicholas A.
Charipar, Kristin M.
Kim, Heungsoo
Kirleis, Matthew A.
Auyeung, Ray C. Y.
Smith, Andrew T.
Mathews, Scott A.
Pique, Alberto
BE Xu, X
Hennig, G
Nakata, Y
Roth, SW
TI Laser Processing of 2D and 3D Metamaterial Structures
SO LASER APPLICATIONS IN MICROELECTRONIC AND OPTOELECTRONIC MANUFACTURING
(LAMOM) XVIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Laser Applications in Microelectronic and Optoelectronic
Manufacturing (LAMOM) XVIII
CY FEB 04-07, 2013
CL San Francisco, CA
SP SPIE
DE Laser Direct-Write; Micropen; Laser Micromachining; LIFT; Metamaterials
ID DIRECT-WRITE
AB The field of metamaterials has expanded to include more than four orders of magnitude of the electromagnetic spectrum, ranging from the microwave to the optical. While early metamaterials operated in the microwave region of the spectrum, where standard printed circuit board techniques could be applied, modern designs operating at shorter wavelengths require alternative manufacturing methods, including advanced semiconductor processes. Semiconductor manufacturing methods have proven successful for planar 2D geometries of limited scale. However, these methods are limited by material choice and the range of possible feature sizes, thus hindering the development of metamaterials due to manufacturing challenges. Further more, it is difficult to achieve the wide range of scales encountered in modern metamaterial designs with these methods alone. Laser direct-write processes can overcome these challenges while enabling new and exciting fabrication techniques. Laser processes such as micromachining and laser transfer are ideally suited for the development and optimization of 2D and 3D metamaterial structures. These laser processes are advantageous in that they have the ability to both transfer and remove material as well as the capacity to pattern non-traditional surfaces. This paper will present recent advances in laser processing of various types of metamaterial designs.
C1 [Charipar, Nicholas A.; Charipar, Kristin M.; Kim, Heungsoo; Kirleis, Matthew A.; Auyeung, Ray C. Y.; Mathews, Scott A.; Pique, Alberto] US Navy, Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA.
RP Charipar, NA (reprint author), US Navy, Res Lab, Div Mat Sci & Technol, Code 6364, Washington, DC 20375 USA.
EM nicholas.charipar@nrl.navy.mil
NR 17
TC 1
Z9 1
U1 3
U2 14
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9376-7
J9 PROC SPIE
PY 2013
VL 8607
AR 86070T
DI 10.1117/12.2006496
PG 7
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BHU61
UT WOS:000326691000012
ER
PT S
AU Howard, RA
Vourlidas, A
Korendyke, CM
Plunkett, SP
Carter, MT
Wang, D
Rich, N
McMullin, DR
Lynch, S
Thurn, A
Clifford, G
Socker, DG
Thernisien, AF
Chua, D
Linton, MG
Keller, D
Janesick, JR
Tower, J
Grygon, M
Hagood, R
Bast, W
Liewer, PC
De Jong, EM
Velli, MMC
Mikic, Z
Bothmer, V
Rochus, P
Halain, JP
Lamy, PL
AF Howard, Russell A.
Vourlidas, Angelos
Korendyke, Clarence M.
Plunkett, Simon P.
Carter, Michael T.
Wang, Dennis
Rich, Nathan
McMullin, Donald R.
Lynch, Sean
Thurn, Adam
Clifford, Greg
Socker, Dennis G.
Thernisien, Arnaud F.
Chua, Damien
Linton, Mark G.
Keller, David
Janesick, James R.
Tower, John
Grygon, Mark
Hagood, Robert
Bast, William
Liewer, Paulett C.
De Jong, Eric M.
Velli, Marco M. C.
Mikic, Zoran
Bothmer, Volker
Rochus, Pierre
Halain, Jean-Philippe
Lamy, Philippe L.
BE Fineschi, S
Fennelly, J
TI The solar orbiter imager (SoloHI) instrument for the Solar Orbiter
mission
SO SOLAR PHYSICS AND SPACE WEATHER INSTRUMENTATION V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Solar Physics and Space Weather Instrumentation V
CY AUG 25-26, 2013
CL San Diego, CA
SP SPIE
DE Heliospheric imager; Solar Orbiter; Solar Probe Plus; CMOS; APS; stray
light reduction
ID HELIOSPHERIC INVESTIGATION SECCHI; STEREO MISSION
AB The SoloHI instrument for the ESA/NASA Solar Orbiter mission will track density fluctuations in the inner heliosphere, by observing visible sunlight scattered by electrons in the solar wind. Fluctuations are associated with dynamic events such as coronal mass ejections, but also with the "quiescent" solar wind. SoloHI will provide the crucial link between the low corona observations from the Solar Orbiter instruments and the in-situ measurements on Solar Orbiter and the Solar Probe Plus missions. The instrument is a visible-light telescope, based on the SECCHI/Heliospheric Imager (HI) currently flying on the STEREO mission. In this concept, a series of baffles reduce the scattered light from the solar disk and reflections from the spacecraft to levels below the scene brightness, typically by a factor of 10(12). The fluctuations are imposed against a much brighter signal produced by light scattered by dust particles (the zodiacal light/F-corona). Multiple images are obtained over a period of several minutes and are summed on-board to increase the signal-to-noise ratio and to reduce the telemetry load. SoloHI is a single telescope with a 40 degrees field of view beginning at 5 degrees from the Sun center. Through a series of Venus gravity assists, the minimum perihelia for Solar Orbiter will be reduced to about 60 Rsun (0.28 AU), and the inclination of the orbital plane will be increased to a maximum of 35 degrees after the 7 year mission. The CMOS/APS detector is a mosaic of four 2048 x 1920 pixel arrays, each 2-side buttable with 11 mu m pixels.
C1 [Howard, Russell A.; Vourlidas, Angelos; Korendyke, Clarence M.; Plunkett, Simon P.; Carter, Michael T.; Wang, Dennis; Rich, Nathan; Lynch, Sean; Thurn, Adam; Socker, Dennis G.; Chua, Damien; Linton, Mark G.] Naval Res Lab, Washington, DC 20375 USA.
RP Howard, RA (reprint author), Naval Res Lab, Washington, DC 20375 USA.
RI Vourlidas, Angelos/C-8231-2009
OI Vourlidas, Angelos/0000-0002-8164-5948
NR 14
TC 1
Z9 1
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9712-3
J9 PROC SPIE
PY 2013
VL 8862
AR UNSP 88620H
DI 10.1117/12.2027657
PG 13
WC Astronomy & Astrophysics; Optics
SC Astronomy & Astrophysics; Optics
GA BHT17
UT WOS:000326605000014
ER
PT S
AU Korendyke, CM
Vourlidas, A
Plunkett, SP
Howard, RA
Wang, D
Marshall, CJ
Waczynski, A
Janesick, JJ
Elliot, T
Tun, S
Tower, J
Grygon, M
Keller, D
Clifford, GE
AF Korendyke, Clarence M.
Vourlidas, Angelos
Plunkett, Simon P.
Howard, Russell A.
Wang, Dennis
Marshall, Cheryl J.
Waczynski, Augustyn
Janesick, James J.
Elliot, Thomas
Tun, Samuel
Tower, John
Grygon, Mark
Keller, David
Clifford, Gregory E.
BE Fineschi, S
Fennelly, J
TI Development and test of an active pixel sensor detector for heliospheric
imager on solar orbiter and solar probe plus
SO SOLAR PHYSICS AND SPACE WEATHER INSTRUMENTATION V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Solar Physics and Space Weather Instrumentation V
CY AUG 25-26, 2013
CL San Diego, CA
SP SPIE
DE APS; CMOS; Solar Probe; Solar Orbiter; Radiation
AB The Naval Research Laboratory is developing next generation CMOS imaging arrays for the Solar Orbiter and Solar Probe Plus missions. The device development is nearly complete with flight device delivery scheduled for summer of 2013. The 4Kx4K mosaic array with 10micron pixels is well suited to the panoramic imaging required for the Solar Orbiter mission. The devices are robust (>100krad) and exhibit minimal performance degradation with respect to radiation. The device design and performance are described.
C1 [Korendyke, Clarence M.; Vourlidas, Angelos; Plunkett, Simon P.; Howard, Russell A.; Wang, Dennis; Tun, Samuel] Naval Res Lab, Washington, DC 20375 USA.
RP Korendyke, CM (reprint author), Naval Res Lab, Washington, DC 20375 USA.
RI Vourlidas, Angelos/C-8231-2009
OI Vourlidas, Angelos/0000-0002-8164-5948
NR 13
TC 0
Z9 0
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9712-3
J9 PROC SPIE
PY 2013
VL 8862
AR UNSP 88620J
DI 10.1117/12.2027655
PG 14
WC Astronomy & Astrophysics; Optics
SC Astronomy & Astrophysics; Optics
GA BHT17
UT WOS:000326605000016
ER
PT S
AU Vourlidas, A
Howard, RA
Plunkett, SP
Korendyke, CM
Carter, MT
Thernisien, AFR
Chua, DH
Van Duyne, P
Socker, DG
Linton, MG
Liewer, PC
Hall, JR
Morrill, JS
DeJong, EM
Mikic, Z
Rochus, PLPM
Bothmer, V
Rodmann, J
Lamy, P
AF Vourlidas, Angelos
Howard, Russell A.
Plunkett, Simon P.
Korendyke, Clarence M.
Carter, Michael T.
Thernisien, Arnaud F. R.
Chua, Damien H.
Van Duyne, Peter
Socker, Dennis G.
Linton, Mark G.
Liewer, Paulett C.
Hall, Jeffrey R.
Morrill, Jeff S.
DeJong, Eric M.
Mikic, Zoran
Rochus, Pierre L. P. M.
Bothmer, Volker
Rodmann, Jens
Lamy, Philippe
BE Fineschi, S
Fennelly, J
TI Seeing the Corona with the Solar Probe Plus Mission: The Wide-Field
Imager For Solar Probe plus (WISPR)
SO SOLAR PHYSICS AND SPACE WEATHER INSTRUMENTATION V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Solar Physics and Space Weather Instrumentation V
CY AUG 25-26, 2013
CL San Diego, CA
SP SPIE
DE Solar Probe Plus; Heliospheric Imager; Solar Corona; Solar Wind;
Imaging; Thomson Scattering
ID CONNECTION
AB The Solar Probe Plus (SPP) mission scheduled for launch in 2018, will orbit between the Sun and Venus with diminishing perihelia reaching as close as 7 million km (9.86 solar radii) from Sun center. In addition to a suite of in-situ probes for the magnetic field, plasma, and energetic particles, SPP will be equipped with an imager. The Wide-field Imager for the Solar PRobe+ (WISPR), with a 95 degrees radial by 58 degrees transverse field of view, will image the fine-scale coronal structure of the corona, derive the 3D structure of the large-scale corona, and determine whether a dust-free zone exists near the Sun. Given the tight mass constrains of the mission, WISPR incorporates an efficient design of two wide-field telescopes and their associated focal plane arrays based on novel large-format (2kx2k) APS CMOS detectors into the smallest heliospheric imaging package to date. The flexible control electronics allow WISPR to collect individual images at cadences up to 1 second at perihelion or sum several of them to increase the signal-to-noise during the outbound part of the orbit. The use of two telescopes minimizes the risk of dust damage which may be considerable close to the Sun. The dependency of the Thomson scattering emission of the corona on the imaging geometry dictates that WISPR will be very sensitive to the emission from plasma close to the spacecraft in contrast to the situation for imaging from Earth orbit. WISPR will be the first 'local' imager providing a crucial link between the large scale corona and the in-situ measurements.
C1 [Vourlidas, Angelos; Howard, Russell A.; Plunkett, Simon P.; Korendyke, Clarence M.; Carter, Michael T.; Chua, Damien H.; Socker, Dennis G.; Linton, Mark G.; Morrill, Jeff S.] Naval Res Lab, Space Sci Div, Washington, DC 20375 USA.
RP Vourlidas, A (reprint author), Naval Res Lab, Space Sci Div, 4555 Overlook Ave,SW, Washington, DC 20375 USA.
RI Vourlidas, Angelos/C-8231-2009
OI Vourlidas, Angelos/0000-0002-8164-5948
NR 2
TC 1
Z9 1
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9712-3
J9 PROC SPIE
PY 2013
VL 8862
AR UNSP 88620I
DI 10.1117/12.2027508
PG 10
WC Astronomy & Astrophysics; Optics
SC Astronomy & Astrophysics; Optics
GA BHT17
UT WOS:000326605000015
ER
PT S
AU Watnik, AT
Lebow, PS
AF Watnik, Abbie T.
Lebow, Paul S.
BE Forbes, A
Lizotte, TE
TI Dynamic Holography for Extended Object Beam Shaping
SO LASER BEAM SHAPING XIV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Laser Beam Shaping XIV
CY AUG 26, 2013
CL San Diego, CA
SP SPIE
DE Holography; Beam shaping; Canopy Obscuration; Foliage Penetration
AB We describe a laboratory experiment to improve the energy-on-target for an extended object. We utilize an iterative approach combining digital holography for detection and SLM beam shaping for object re-illumination. We developed a technique to modify the SLM phase to prevent oversharpening of glints and other high intensity return signal points that cause the beam to collapse to a single point with further iterations. Instead, the gain is increased as more light uniformly hits the intended target with each iteration. We present laboratory results to verify this approach and demonstrate the increased gain resulting from this dynamic beam-shaping.
C1 [Watnik, Abbie T.; Lebow, Paul S.] Naval Res Lab, Washington, DC 20375 USA.
RP Watnik, AT (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA.
EM code5662@nrl.navy.mil
NR 10
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 978-0-8194-9693-5
J9 PROC SPIE
PY 2013
VL 8843
AR 88430E
DI 10.1117/12.2023395
PG 8
WC Engineering, Electrical & Electronic; Optics; Physics, Applied
SC Engineering; Optics; Physics
GA BHU86
UT WOS:000326708500012
ER
PT S
AU Firebaugh, SL
Terray, EA
Dong, L
AF Firebaugh, Samara L.
Terray, Eugene A.
Dong, Lei
BE Kudryashov, AV
Paxton, AH
Ilchenko, VS
Aschke, L
Washio, K
TI Optimization of resonator radial dimensions for quartz enhanced
photoacoustic spectroscopy systems
SO LASER RESONATORS, MICRORESONATORS, AND BEAM CONTROL XV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Laser Resonators, Microresonators, and Beam Control XV
CY FEB 03-07, 2013
CL San Francisco, CA
SP SPIE
DE Photoacoustic spectroscopy; acoustic modeling; microresonator; finite
element modeling
ID TRACE GAS-ANALYSIS; TUNING FORKS; LASER; ATMOSPHERE
AB A finite element model for QEPAS systems has been developed that can apply to both on-axis and off-axis systems. The model includes the viscous and thermal loss on the acoustic resonator sidewalls, and these factors are found to significantly affect the signal to noise ratio. The model results are compared to experimental data and it is found that the model correctly predicts the optimal radial dimensions for resonator tubes of a given length. The model is applied to examine the dependence of signal-to-noise ratio on resonator diameter and sidewall thickness. The model is also applied to off-axis systems.
C1 [Firebaugh, Samara L.] US Naval Acad, Annapolis, MD 21402 USA.
RP Firebaugh, SL (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
EM firebaug@usna.edu
NR 21
TC 0
Z9 0
U1 1
U2 6
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9369-9
J9 PROC SPIE
PY 2013
VL 8600
DI 10.1117/12.2004581
PG 12
WC Optics
SC Optics
GA BHU88
UT WOS:000326708700041
ER
PT J
AU Wei, M
Jacobs, G
Rowley, C
Barron, CN
Hogan, P
Spence, P
Smedstad, OM
Martin, P
Muscarella, P
Coelho, E
AF Wei, M.
Jacobs, G.
Rowley, C.
Barron, C. N.
Hogan, P.
Spence, P.
Smedstad, O. M.
Martin, P.
Muscarella, P.
Coelho, E.
TI The impact of initial spread calibration on the RELO ensemble and its
application to Lagrangian dynamics
SO NONLINEAR PROCESSES IN GEOPHYSICS
LA English
DT Article
ID WEST FLORIDA SHELF; OCEAN MODEL HYCOM; VERTICAL COORDINATE; COHERENT
STRUCTURES; PREDICTION SYSTEM; DATA ASSIMILATION; GLOBAL ENSEMBLE;
MONTEREY BAY; RADAR DATA; PERTURBATIONS
AB A number of real-time ocean model forecasts were carried out successfully at Naval Research Laboratory (NRL) to provide modeling support and numerical guidance to the CARTHE GLAD at-sea experiment during summer 2012. Two RELO ensembles and three single models using NCOM and HYCOM with different resolutions were carried out. A calibrated ensemble system with enhanced spread and reliability was developed to better support this experiment. The calibrated ensemble is found to outperform the un-calibrated ensemble in forecasting accuracy, skill, and reliability for all the variables and observation spaces evaluated. The metrics used in this paper include RMS error, anomaly correlation, PECA, Brier score, spread reliability, and Talagrand rank histogram. It is also found that even the un-calibrated ensemble outperforms the single forecast from the model with the same resolution.
The advantages of the ensembles are further extended to the Lagrangian framework. In contrast to a single model forecast, the RELO ensemble provides not only the most likely Lagrangian trajectory for a particle in the ocean, but also an uncertainty estimate that directly reflects the complicated ocean dynamics, which is valuable for decision makers. The examples show that the calibrated ensemble with more reliability can capture trajectories in different, even opposite, directions, which would be missed by the un-calibrated ensemble. The ensembles are applied to compute the repelling and attracting Lagrangian coherent structures (LCSs), and the uncertainties of the LCSs, which are hard to obtain from a single model forecast, are estimated. It is found that the spatial scales of the LCSs depend on the model resolution. The model with the highest resolution produces the finest, small-scale, LCS structures, while the model with lowest resolution generates only large-scale LCSs. The repelling and attracting LCSs are found to intersect at many locations and create complex mesoscale eddies. The fluid particles and drifters in the middle of these tangles are subject to attraction and repulsion simultaneously from these two kinds of LCSs. As a result, the movements of particles near the Deepwater Horizon (DWH) location are severely limited. This is also confirmed by the Lagrangian trajectories predicted by the ensembles.
C1 [Wei, M.; Jacobs, G.; Rowley, C.; Barron, C. N.; Hogan, P.; Martin, P.] Naval Res Lab, Stennis Space Ctr, MS USA.
[Spence, P.; Smedstad, O. M.] Qinetiq North Amer, Stennis Space Ctr, MS USA.
[Muscarella, P.] Naval Res Lab, ASEE Postdoctoral Program, Stennis Space Ctr, MS USA.
[Coelho, E.] Univ New Orleans NRL, Stennis Space Ctr, MS USA.
RP Wei, M (reprint author), Naval Res Lab, Stennis Space Ctr, MS USA.
EM mozheng.wei@nrlssc.navy.mil
RI Barron, Charlie/C-1451-2008;
OI Rowley, Clark/0000-0003-3496-6404
FU BP/The Gulf of Mexico Research Initiative (GoMRI) through the Consortium
for Advanced Research on the Transport of Hydrocarbon in the Environment
(CARTHE); SEMESTER 6.2 project at NRL; Office of Naval Research
FX This research was made possible in part by a grant from BP/The Gulf of
Mexico Research Initiative (GoMRI) through the Consortium for Advanced
Research on the Transport of Hydrocarbon in the Environment (CARTHE). It
was also partly funded through the SEMESTER 6.2 project at NRL and
supported by the Office of Naval Research. We are grateful to the
assistance of many of our colleagues at NRL at Stennis Space Center,
particularly Germana Peggion, Jan Dastugue, Michael Phelps, and the
scientists from the other organizations that participated in CARTHE. We
are grateful to the editor and two anonymous reviewers for the
constructive comments and suggestions which have improved the
manuscript. The explanation to spatial scale difference between the
repelling and attracting LCSs produced by the high resolution model is
kindly suggested by one of the reviewers.
NR 59
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U1 0
U2 9
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1023-5809
J9 NONLINEAR PROC GEOPH
JI Nonlinear Process Geophys.
PY 2013
VL 20
IS 5
BP 621
EP 641
DI 10.5194/npg-20-621-2013
PG 21
WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
GA 247QF
UT WOS:000326633200002
ER
PT J
AU Mallory, K
Hsieh, MA
Forgoston, E
Schwartz, IB
AF Mallory, K.
Hsieh, M. A.
Forgoston, E.
Schwartz, I. B.
TI Distributed allocation of mobile sensing swarms in gyre flows
SO NONLINEAR PROCESSES IN GEOPHYSICS
LA English
DT Article
ID LAGRANGIAN COHERENT STRUCTURES; TIME LYAPUNOV EXPONENTS; MULTIROBOT
COORDINATION; TASK ALLOCATION; APERIODIC FLOWS; TRANSPORT; TRAJECTORIES;
MANIFOLDS; SURFACES; FIELDS
AB We address the synthesis of distributed control policies to enable a swarm of homogeneous mobile sensors to maintain a desired spatial distribution in a geophysical flow environment, or workspace. In this article, we assume the mobile sensors (or robots) have a "map" of the environment denoting the locations of the Lagrangian coherent structures or LCS boundaries. Using this information, we design agent-level hybrid control policies that leverage the surrounding fluid dynamics and inherent environmental noise to enable the team to maintain a desired distribution in the workspace. We discuss the stability properties of the ensemble dynamics of the distributed control policies. Since realistic quasi-geostrophic ocean models predict double-gyre flow solutions, we use a wind-driven multi-gyre flow model to verify the feasibility of the proposed distributed control strategy and compare the proposed control strategy with a baseline deterministic allocation strategy. Lastly, we validate the control strategy using actual flow data obtained by our coherent structure experimental testbed.
C1 [Mallory, K.; Hsieh, M. A.] Drexel Univ, SAS Lab, Philadelphia, PA 19104 USA.
[Forgoston, E.] Montclair State Univ, Dept Math Sci, Montclair, NJ 07043 USA.
[Schwartz, I. B.] US Naval Res Lab, Plasma Phys Div, Nonlinear Syst Dynam Sect, Washington, DC 20375 USA.
RP Mallory, K (reprint author), Drexel Univ, SAS Lab, Philadelphia, PA 19104 USA.
EM km374@drexel.edu
FU Office of Naval Research (ONR) [N000141211019]; US Naval Research
Laboratory (NRL) [N0017310-2-C007]; ONR [N0001412WX20083]; NRL Base
Research Program [N0001412WX30002]; ICMAT Severo Ochoa project
[SEV-2011-0087]
FX K. Mallory and M. A. Hsieh were supported by the Office of Naval
Research (ONR) Award No. N000141211019. E. Forgoston was supported by
the US Naval Research Laboratory (NRL) Award No. N0017310-2-C007. I. B.
Schwartz was supported by ONR grant N0001412WX20083 and the NRL Base
Research Program N0001412WX30002. The authors additionally acknowledge
support by the ICMAT Severo Ochoa project SEV-2011-0087.
NR 39
TC 13
Z9 13
U1 2
U2 4
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1023-5809
J9 NONLINEAR PROC GEOPH
JI Nonlinear Process Geophys.
PY 2013
VL 20
IS 5
BP 657
EP 668
DI 10.5194/npg-20-657-2013
PG 12
WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
GA 247QF
UT WOS:000326633200004
ER
PT J
AU Sulman, MHM
Huntley, HS
Lipphardt, BL
Jacobs, G
Hogan, P
Kirwan, AD
AF Sulman, M. H. M.
Huntley, H. S.
Lipphardt, B. L., Jr.
Jacobs, G.
Hogan, P.
Kirwan, A. D., Jr.
TI Hyperbolicity in temperature and flow fields during the formation of a
Loop Current ring
SO NONLINEAR PROCESSES IN GEOPHYSICS
LA English
DT Article
ID GULF-OF-MEXICO; LAGRANGIAN COHERENT STRUCTURES; TIME LYAPUNOV EXPONENTS;
CURRENT EDDY; CIRCULATION; TRANSPORT; TRAJECTORIES; BARRIERS; MODEL;
SEPARATION
AB Loop Current rings (LCRs) are among the largest mesoscale eddies in the world ocean. They arise when bulges formed by the Loop Current in the Gulf of Mexico close off. The LCR formation process may take several weeks, and there may be several separations and reattachments before final separation occurs. It is well established that this period is characterized by a persistent saddle point in the sea surface height field, as seen in both model and satellite data. We present here a detailed study of this saddle region during the formation of Eddy Franklin in 2010, over multiple days and at several depths. Using a data-assimilating Gulf of Mexico implementation of the HYbrid Coordinate Ocean Model (HYCOM), we compare the vertical structure of the currents and temperature fields on 5 and 10 June 2010. Finite-time Lyapunov exponents (FTLE) are computed from the surface down to 200 m to estimate the location of relevant transport barriers. Several new features of the saddle region associated with LCR formation are revealed: the ridges in the FTLE fields are shown to be excellent surrogates for the manifolds delineating the material flow structures with only slight degradation at depth. The intersection of the ridges representing stable and unstable manifolds drops nearly vertically through the water column at both times; remarkably, the material boundary shapes are maintained even as they are advected. Moreover, velocity stagnation points and saddle points in the temperature field are consistently found near the intersections at all depths, and their geographic positions are also nearly constant with depth.
C1 [Sulman, M. H. M.; Huntley, H. S.; Lipphardt, B. L., Jr.; Kirwan, A. D., Jr.] Univ Delaware, Sch Marine Sci & Policy, Newark, DE 19716 USA.
[Jacobs, G.; Hogan, P.] Naval Res Lab, Stennis Space Ctr, MS 39529 USA.
RP Kirwan, AD (reprint author), Univ Delaware, Sch Marine Sci & Policy, Newark, DE 19716 USA.
EM adk@udel.edu
FU Office of Naval Research [N00014-10-1-0522, N00014-11-10081]; Office of
Naval Research MURI OCEAN 3D+1 grant [N00014-11-1-0087]; BP/The Gulf of
Mexico Research Initiative; Mary A. S. Lighthipe endowment; ICMAT Severo
Ochoa project [SEV-2011-0087]
FX Support for this research came from the Office of Naval Research through
grants N00014-10-1-0522 and N00014-11-10081 to the University of
Delaware, the Office of Naval Research MURI OCEAN 3D+1 grant
N00014-11-1-0087, a grant from BP/The Gulf of Mexico Research
Initiative, and the Mary A. S. Lighthipe endowment to the University of
Delaware. The ICMAT Severo Ochoa project SEV-2011-0087 provided support
for publication of this research. The authors wish to thank two
anonymous reviewers for their helpful comments.
NR 40
TC 4
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U1 0
U2 6
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1023-5809
J9 NONLINEAR PROC GEOPH
JI Nonlinear Process Geophys.
PY 2013
VL 20
IS 5
BP 883
EP 892
DI 10.5194/npg-20-883-2013
PG 10
WC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
SC Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
GA 247QF
UT WOS:000326633200020
ER
PT S
AU Decker, JW
Livingston, MA
AF Decker, Jonathan W.
Livingston, Mark A.
BE Wong, PC
Kao, DL
Hao, MC
Chen, C
TI Web Tools for Rapid Experimental Visualization Prototyping
SO VISUALIZATION AND DATA ANALYSIS 2013
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT SPIE Conference on Visualization and Data Analysis (VDA)
CY FEB 04-06, 2013
CL Burlingame, CA
SP Soc Imaging Sci & Technol, SPIE, Kitware Inc, Visual Analyt Community, Hewlett Packard Co
DE web tools; experimental visualization
AB Quite often a researcher finds themselves looking at spreadsheets of high-dimensional data generated by experimental models and user studies. We can use analysis to challenge or confirm hypothesis,but unexpected results can easily be lost in the shuffle. For this reason, it would be useful to visualize the results so we can explore our data and make new discoveries.
Web browsers have become increasingly capable for creating complex, multi-view applications. Javascript is quickly becoming a de facto standard for scripting, online and offline. This work demonstrates the use of web technologies as a powerful tool for rapid visualization prototyping.
We have developed two prototypes: One for high-dimensional results of the abELICIT-multi-agent version of the ELICIT platform tasked with collaborating to identify the parameters of a pending attack. Another prototype displays responses to a user study on the effectiveness of multi-layer visualization techniques. We created coordinated multiple views prototypes in the Google Chrome web browser written in Javascript, CSS and HTML. We will discuss the benefits and shortcomings of this approach.
C1 [Decker, Jonathan W.; Livingston, Mark A.] Naval Res Lab, Washington, DC USA.
RP Decker, JW (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC USA.
NR 7
TC 0
Z9 0
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9427-6
J9 PROC SPIE
PY 2013
VL 8654
AR 86540Q
DI 10.1117/12.2008413
PG 7
WC Computer Science, Artificial Intelligence; Optics; Imaging Science &
Photographic Technology
SC Computer Science; Optics; Imaging Science & Photographic Technology
GA BHH41
UT WOS:000325425900025
ER
PT S
AU Livingston, MA
Decker, JW
Ai, ZM
AF Livingston, Mark A.
Decker, Jonathan W.
Ai, Zhuming
BE Wong, PC
Kao, DL
Hao, MC
Chen, C
TI Evaluating Multivariate Visualizations on Time-Varying Data
SO VISUALIZATION AND DATA ANALYSIS 2013
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT SPIE Conference on Visualization and Data Analysis (VDA)
CY FEB 04-06, 2013
CL Burlingame, CA
SP Soc Imaging Sci & Technol, SPIE, Kitware Inc, Visual Analyt Community, Hewlett Packard Co
DE Quantitative evaluation; multivariate visualization; visual task design;
texture perception; relative texture density; user study
AB Multivariate visualization techniques have been applied to a wide variety of visual analysis tasks and abroad range of data types and sources. Their utility has been evaluated in a modest range of simple analysis tasks. In this work, we extend our previous task to a case of time-varying data. We implemented five visualizations of our synthetic test data: three previously evaluated techniques (Data-driven Spots, Oriented Slivers, and Attribute Blocks), one hybrid of the first two that we call Oriented Data-driven Spots, and an implementation of Attribute Blocks that merges the temporal slices. We conducted a user study of these five techniques. Our previous finding (with static data) was that users performed best when the density of the target (as encoded in the visualization) was either highest or had the highest ratio to non-target features. The time-varying presentations gave us a wider range of density and density gains from which to draw conclusions; we now see evidence for the density gain as the perceptual measure, rather than the absolute density.
C1 [Livingston, Mark A.; Decker, Jonathan W.; Ai, Zhuming] Naval Res Lab, Washington, DC USA.
RP Livingston, MA (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC USA.
EM mark.livingston@nrl.navy.mil
NR 23
TC 0
Z9 0
U1 1
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9427-6
J9 PROC SPIE
PY 2013
VL 8654
AR 86540N
DI 10.1117/12.2005728
PG 14
WC Computer Science, Artificial Intelligence; Optics; Imaging Science &
Photographic Technology
SC Computer Science; Optics; Imaging Science & Photographic Technology
GA BHH41
UT WOS:000325425900022
ER
PT S
AU Livingston, MA
Murugesan, A
Brock, D
Frost, WK
Perzanowski, D
AF Livingston, Mark A.
Murugesan, Arthi
Brock, Derek
Frost, Wende K.
Perzanowski, Dennis
BE Wong, PC
Kao, DL
Hao, MC
Chen, C
TI Visualization of Decision Processes Using a Cognitive Architecture
SO VISUALIZATION AND DATA ANALYSIS 2013
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT SPIE Conference on Visualization and Data Analysis (VDA)
CY FEB 04-06, 2013
CL Burlingame, CA
SP Soc Imaging Sci & Technol, SPIE, Kitware Inc, Visual Analyt Community, Hewlett Packard Co
DE Software visualization; visual knowledge representation; graph/network
data; visualization in social and information sciences; cognitive model
ID INTELLIGENCE
AB Cognitive architectures are computational theories of reasoning the human mind engages in as it processes facts and experiences. A cognitive architecture uses declarative and procedural knowledge to represent mental constructs that are involved in decision making. Employing a model of behavioral and perceptual constraints derived from a set of one or more scenarios, the architecture reasons about the most likely consequence(s) of a sequence of events. Reasoning of any complexity and depth involving computational processes, however, is often opaque and challenging to comprehend. Arguably, for decision makers who may need to evaluate or question the results of autonomous reasoning, it would be useful to be able to inspect the steps involved in an interactive, graphical format. When a chain of evidence and constraint-based decision points can be visualized, it becomes easier to explore both how and why a scenario of interest will likely unfold in a particular way. In initial work on a scheme for visualizing cognitively-based decision processes, we focus on generating graphical representations of models run in the Polyscheme cognitive architecture. Our visualization algorithm operates on a modified version of Polyscheme's output, which is accomplished by augmenting models with a simple set of tags. We provide example visualizations and discuss properties of our technique that pose challenges for our representation goals. We conclude with a summary of feedback solicited from domain experts and practitioners in the field of cognitive modeling.
C1 [Livingston, Mark A.; Brock, Derek; Frost, Wende K.; Perzanowski, Dennis] Naval Res Lab, Washington, DC USA.
RP Livingston, MA (reprint author), Naval Res Lab, 4555 Overlook Ave SW, Washington, DC USA.
EM mark.livingston@nrl.navy.mil
NR 11
TC 0
Z9 0
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9427-6
J9 PROC SPIE
PY 2013
VL 8654
AR 86540U
DI 10.1117/12.2005736
PG 8
WC Computer Science, Artificial Intelligence; Optics; Imaging Science &
Photographic Technology
SC Computer Science; Optics; Imaging Science & Photographic Technology
GA BHH41
UT WOS:000325425900029
ER
PT J
AU Griffin, D
Walker, KA
Franklin, JE
Parrington, M
Whaley, C
Hopper, J
Drummond, JR
Palmer, PI
Strong, K
Duck, TJ
Abboud, I
Bernath, PF
Clerbaux, C
Coheur, PF
Curry, KR
Dan, L
Hyer, E
Kliever, J
Lesins, G
Maurice, M
Saha, A
Tereszchuk, K
Weaver, D
AF Griffin, D.
Walker, K. A.
Franklin, J. E.
Parrington, M.
Whaley, C.
Hopper, J.
Drummond, J. R.
Palmer, P. I.
Strong, K.
Duck, T. J.
Abboud, I.
Bernath, P. F.
Clerbaux, C.
Coheur, P. -F.
Curry, K. R.
Dan, L.
Hyer, E.
Kliever, J.
Lesins, G.
Maurice, M.
Saha, A.
Tereszchuk, K.
Weaver, D.
TI Investigation of CO, C2H6 and aerosols in a boreal fire plume over
eastern Canada during BORTAS 2011 using ground- and satellite-based
observations and model simulations
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID BIOMASS BURNING PLUMES; NORTH-ATLANTIC; TRACE GASES; PARIS-IR; OZONE;
RETRIEVALS; TRANSPORT; VALIDATION; EMISSION; EUROPE
AB We present the results of total column measurements of CO, C2H6 and fine-mode aerosol optical depth (AOD) during the "Quantifying the impact of BOReal forest fires on Tropospheric oxidants over the Atlantic using Aircraft and Satellites" (BORTAS-B) campaign over eastern Canada. Ground-based observations, using Fourier transform spectrometers (FTSs) and sun photometers, were carried out in July and August 2011. These measurements were taken in Halifax, Nova Scotia, which is an ideal location to monitor the outflow of boreal fires from North America, and also in Toronto, Ontario. Measurements of fine-mode AOD enhancements were highly correlated with enhancements in coincident trace gas (CO and C2H6) observations between 19 and 21 July 2011, which is typical for a smoke plume event. In this paper, we focus on the identification of the origin and the transport of this smoke plume. We use back trajectories calculated by the Canadian Meteorological Centre as well as FLEXPART forward trajectories to demonstrate that the enhanced CO, C2H6 and fine-mode AOD seen near Halifax and Toronto originated from forest fires in northwestern Ontario that occurred between 17 and 19 July 2011. In addition, total column measurements of CO from the satellite-borne Infrared Atmospheric Sounding Interferometer (IASI) have been used to trace the smoke plume and to confirm the origin of the CO enhancement. Furthermore, the enhancement ratio - that is, in this case equivalent to the emission ratio (ERC2H6/CO) - was estimated from these ground-based observations. These C2H6 emission results from boreal fires in northwestern Ontario agree well with C2H6 emission measurements from other boreal regions, and are relatively high compared to fires from other geographical regions. The ground-based CO and C(2)H(6 o)bservations were compared with outputs from the 3-D global chemical transport model GEOS-Chem, using the Fire Locating And Modeling of Burning Emissions (FLAMBE) inventory. Agreement within the stated measurement uncertainty (similar to 3% for CO and similar to 8% for C2H6) was found for the magnitude of the enhancement of the CO and C2H6 total columns between the measured and modelled results. However, there is a small shift in time (of approximately 6 h) of arrival of the plume over Halifax between the results.
C1 [Griffin, D.; Walker, K. A.; Whaley, C.; Strong, K.; Kliever, J.; Maurice, M.; Weaver, D.] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
[Walker, K. A.] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada.
[Franklin, J. E.; Hopper, J.; Drummond, J. R.; Duck, T. J.; Curry, K. R.; Lesins, G.] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 1Z9, Canada.
[Parrington, M.; Palmer, P. I.] Univ Edinburgh, Sch GeoSci, Edinburgh EH9 3JN, Midlothian, Scotland.
[Abboud, I.] Environm Canada, AEROCAN, Egbert, ON L0L 1N0, Canada.
[Bernath, P. F.] Old Dominion Univ, Dept Chem & Biochem, Norfolk, VA 23529 USA.
[Bernath, P. F.; Tereszchuk, K.] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England.
[Clerbaux, C.] Univ Paris 06, Univ Versailles St Quentin, LATMOS IPSL, CNRS INSU, Paris, France.
[Clerbaux, C.; Coheur, P. -F.] Univ Libre Brussels, Brussels, Belgium.
[Hyer, E.] Naval Res Lab, Marine Meteorol Div, Monterey, CA 93943 USA.
[Saha, A.] Univ Sherbrooke, CARTEL, Sherbrooke, PQ J1K 2R1, Canada.
RP Walker, KA (reprint author), Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
EM kwalker@atmosp.physics.utoronto.ca
RI Bernath, Peter/B-6567-2012; Chem, GEOS/C-5595-2014; Hyer,
Edward/E-7734-2011; Drummond, James/O-7467-2014; Palmer,
Paul/F-7008-2010; Parrington, Mark/E-7148-2013; clerbaux,
cathy/I-5478-2013;
OI Bernath, Peter/0000-0002-1255-396X; Hyer, Edward/0000-0001-8636-2026;
Parrington, Mark/0000-0003-4313-6218; Whaley,
Cynthia/0000-0002-0028-1514; Saha, Auromeet/0000-0002-0731-6193
FU Natural Sciences and Engineering Research Council of Canada (NSERC);
NSERC; Canadian Space Agency (CSA); Environment Canada (EC); Natural
Environment Research Council [NE/F017391/1]
FX Funding for this work has been provided by a grant from the Natural
Sciences and Engineering Research Council of Canada (NSERC). Funding for
the DGS measurements has been provided by NSERC, the Canadian Space
Agency (CSA) and Environment Canada (EC). The BORTAS project is funded
by the Natural Environment Research Council under grant NE/F017391/1.
The TAO measurements were made with support from NSERC, CSA and EC. IASI
has been developed and built under the responsibility of the Centre
National des Etudes Spatiales (CNES, France). P.-F. Coheur is a Research
Associate with Fonds de la Recherche Scientifique (FRS-FNRS); his work
is also supported by the Belgian Science Policy Office through
ESA-Prodex C4000103226 arrangement. We would like to further acknowledge
the LATMOS research group for providing the level 2 IASI CO data. We are
also very grateful to AEROCAN (Environment Canada and the Universite de
Sherbrooke) and AERONET (NASA/GSFC) for their support and commitment to
their respective networks, as well as to Mike Boschat for operating the
CIMEL in Halifax for many years. We also acknowledge the work of David
Waugh and Jacinthe Racine, who carried out the analysis of the CMC back
trajectories and provided us with these data.
NR 44
TC 5
Z9 5
U1 2
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 2013
VL 13
IS 20
BP 10227
EP 10241
DI 10.5194/acp-13-10227-2013
PG 15
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 246NK
UT WOS:000326545100006
ER
PT J
AU Saide, PE
Carmichael, GR
Liu, Z
Schwartz, CS
Lin, HC
da Silva, AM
Hyer, E
AF Saide, P. E.
Carmichael, G. R.
Liu, Z.
Schwartz, C. S.
Lin, H. C.
da Silva, A. M.
Hyer, E.
TI Aerosol optical depth assimilation for a size-resolved sectional model:
impacts of observationally constrained, multi-wavelength and fine mode
retrievals on regional scale analyses and forecasts
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID RESOLUTION IMAGING SPECTRORADIOMETER; VARIATIONAL DATA ASSIMILATION; SKY
RADIANCE MEASUREMENTS; ARCTAS-CARB PERIOD; WRF-CHEM; MARINE
STRATOCUMULUS; UNITED-STATES; STATISTICAL-INTERPOLATION; ORGANIC
AEROSOLS; ASIAN AEROSOLS
AB An aerosol optical depth (AOD) three-dimensional variational data assimilation technique is developed for the Gridpoint Statistical Interpolation (GSI) system for which WRF-Chem forecasts are performed with a detailed sectional model, the Model for Simulating Aerosol Interactions and Chemistry (MOSAIC). Within GSI, forward AOD and adjoint sensitivities are performed using Mie computations from the WRF-Chem optical properties module, providing consistency with the forecast. GSI tools such as recursive filters and weak constraints are used to provide correlation within aerosol size bins and upper and lower bounds for the optimization. The system is used to perform assimilation experiments with fine vertical structure and no data thinning or re-gridding on a 12 km horizontal grid over the region of California, USA, where improvements on analyses and forecasts is demonstrated. A first set of simulations was performed, comparing the assimilation impacts of using the operational MODIS (Moderate Resolution Imaging Spectroradiometer) dark target retrievals to those using observationally constrained ones, i.e., calibrated with AERONET (Aerosol RObotic NETwork) data. It was found that using the observationally constrained retrievals produced the best results when evaluated against ground based monitors, with the error in PM2.5 predictions reduced at over 90% of the stations and AOD errors reduced at 100% of the monitors, along with larger overall error reductions when grouping all sites. A second set of experiments reveals that the use of fine mode fraction AOD and ocean multi-wavelength retrievals can improve the representation of the aerosol size distribution, while assimilating only 550 nm AOD retrievals produces no or at times degraded impact. While assimilation of multi-wavelength AOD shows positive impacts on all analyses performed, future work is needed to generate observationally constrained multi-wavelength retrievals, which when assimilated will generate size distributions more consistent with AERONET data and will provide better aerosol estimates.
C1 [Saide, P. E.; Carmichael, G. R.] Univ Iowa, Ctr Global & Reg Environm Res, Iowa City, IA 52240 USA.
[Liu, Z.; Schwartz, C. S.; Lin, H. C.] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
[da Silva, A. M.] NASA, Global Modeling & Assimilat Off, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Hyer, E.] Naval Res Lab, Marine Meteorol Div, Monterey, CA USA.
RP Saide, PE (reprint author), Univ Iowa, Ctr Global & Reg Environm Res, Iowa City, IA 52240 USA.
EM pablo-saide@uiowa.edu
RI Hyer, Edward/E-7734-2011
OI Hyer, Edward/0000-0001-8636-2026
FU NASA [NNX08AL05G, NNX11AI52G, NNX12AB78G, NNH11AS15i]; EPA [83503701];
National Center for Research Resources (NCRR), a part of the National
Institutes of Health (NIH) [UL1RR024979]; Fulbright-CONICYT scholarship
[15093810]
FX We thank all WRF-Chem developers, especially Jerome Fast and Rahul
Zaveri who were responsible for the optical properties and MOSAIC code.
We also thank the insightful comments from two anonymous reviewers.
Additionally, we thank Jochen Stutz, Pavel Ionov, Carol Bruegge, Robert
Frouin, Brent Holben, Sabino Piazzolla, Ellsworth Dutton and Mark
Tragesser and their staff for establishing and maintaining the 10
AERONET sites used in this investigation. MODIS data were obtained from
the NASA Langley Research Center Atmospheric Science Data Center. This
work was carried out with the aid of NASA grants NNX08AL05G, NNX11AI52G,
NNX12AB78G and NNH11AS15i, EPA grant 83503701, grant number UL1RR024979
from the National Center for Research Resources (NCRR), a part of the
National Institutes of Health (NIH), and Fulbright-CONICYT scholarship
number 15093810. Its contents are solely the responsibility of the
authors and do not necessarily represent the official views of the
founding institutions.
NR 90
TC 21
Z9 21
U1 5
U2 39
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1680-7316
EI 1680-7324
J9 ATMOS CHEM PHYS
JI Atmos. Chem. Phys.
PY 2013
VL 13
IS 20
BP 10425
EP 10444
DI 10.5194/acp-13-10425-2013
PG 20
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 246NK
UT WOS:000326545100018
ER
PT J
AU Funk, AR
Goldberg, E
Chang, EL
Trammell, SA
Knight, DA
AF Funk, Aaron R.
Goldberg, Efram
Chang, Eddie L.
Trammell, Scott A.
Knight, D. Andrew
TI Attaching high charge density metal ions to surfaces and biomolecules.
Reaction chemistry of hypodentate cobalt diamine complexes
SO DALTON TRANSACTIONS
LA English
DT Article
ID SCHIFF-BASE COMPLEXES; GOLD NANOPARTICLES; CATALYTIC-ACTIVITY; AU
NANOPARTICLES; AMINE COMPLEXES; LIGANDS; FUNCTIONALIZATION;
COORDINATION; IRON(III); DELIVERY
AB Hypodentate diamine cobalt(III) pentammine complexes [Co(NH3)(5)(NH2(CH2)(n)NH3)](ClO4)(4) (8: a: n = 3; b: n = 4; c: n = 6; d: n = 8) have been synthesized via the reaction of [Co(NH3)(5)(OTf)](OTf)(2) (TfOH = CF3SO3H) with the corresponding diamines. The analogous t-boc protected diamine complexes [Co(NH3)(5)(NH2(CH2)(n)NHt-boc)](ClO4)(3) (7a-d) were prepared in 4-26% yield. Low yields for the formation of 7a-d are due to competing side reactions which also gave [Co(NH3)(6)](3+). Complexes 7a-d were deprotected using trifluoroacetic acid to give the corresponding hypodentate diamine complexes [Co(NH3)(5)(NH2(CH2)(n)NH3)](CF3CO2)(0.5)(ClO4)(3.5) (9a-d). HBTU coupling of 8c with N-(t-boc)-L-phenylalanine gave an amino acid functionalized cobalt pentammine complex [Co(NH3)(5)(NH2(CH2)(6)NHt-boc)-L-phenylalanine)](ClO4)(3) (10). All new complexes were characterized using UV-vis and H-1 NMR spectroscopy, and elemental analysis. Grafting of 8c onto 2.4 mm poly(ethylene-co-acrylic acid) (PEAA) beads was achieved via amide coupling. Complex 8c was coupled to thioctic acid via amide coupling and the resulting cobalt disulfide complex [Co(NH3)(5)(N-(6-aminohexyl)-5-(1,2-dithiolan-3-yl)pentanamide)](ClO4)(3) (11) was attached to 10 nm Au nanoparticles. The amount of cobalt loading onto PEAA beads and Au nanoparticles was determined using ICP-MS and EDX.
C1 [Funk, Aaron R.; Goldberg, Efram; Knight, D. Andrew] Florida Inst Technol, Dept Chem, Melbourne, FL 32901 USA.
[Chang, Eddie L.; Trammell, Scott A.] USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA.
RP Knight, DA (reprint author), Florida Inst Technol, Dept Chem, 150 Univ Blvd, Melbourne, FL 32901 USA.
EM aknight@fit.edu
OI Knight, David/0000-0001-5510-6265
FU Defense Threat Reduction Agency-Joint Science and Technology Office for
Chemical and Biological Defense (MIPR) [B102405M, B112542M,
HDTRA136555]; National Science Foundation
FX This work received support from the Defense Threat Reduction
Agency-Joint Science and Technology Office for Chemical and Biological
Defense (MIPR #B102405M, B112542M and HDTRA136555). We would also like
to thank the National Science Foundation for an NSF (EAPSI) fellowship
(to A. R. F.), and Professor Blackman (University of Otago) for helpful
discussions.
NR 31
TC 2
Z9 2
U1 1
U2 13
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 1477-9226
EI 1477-9234
J9 DALTON T
JI Dalton Trans.
PY 2013
VL 42
IS 44
BP 15617
EP 15624
DI 10.1039/c3dt51758f
PG 8
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 240TL
UT WOS:000326119800013
PM 24037460
ER
PT J
AU Shaw, A
Lindhome, P
Calhoun, RL
AF Shaw, A.
Lindhome, P.
Calhoun, R. L.
TI Electrogenerated Chemiluminescence (ECL) Quenching of Ru(bpy)(3)(2+) by
the Explosives TATP and Tetryl
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID ELECTRON-TRANSFER REACTIONS; HYDROGEN-PEROXIDE
AB Interaction of the explosives triacetone triperoxide (TATP) and Tetryl (2,4,6-Trinitrophenylmethylnitramine) with the electrogenerated chemiluminescence (ECL) of Tris(2,2' bipyridine)ruthenium (II) ion (Ru(bpy)(3)(2+)) in acetonitrile (MeCN) was studied. Both analytes greatly reduce the light made during the annihilation mechanism yielding ppb level detection. The quenching mechanism for TATP is thought to be EEC' during reduction which reduces the light by oxidizing the Ru(bpy)(3)(+) before it can react with Ru(bpy)(3)(3+) with a rate constant estimate of 4.8 x 10(4) M-1 s(-1). The Tetryl quenching mechanism is less clear, in part, because the molecule is also a fluorescence quencher with behavior suggesting both static and dynamic quenching. (C) 2013 The Electrochemical Society. All rights reserved.
C1 [Shaw, A.; Lindhome, P.; Calhoun, R. L.] US Naval Acad, Dept Chem, Annapolis, MD 21412 USA.
RP Shaw, A (reprint author), US Naval Acad, Dept Chem, Annapolis, MD 21412 USA.
EM calhoun@usna.edu
FU U.S. Naval Academy; Defense Threat Reduction Agency
FX My thanks to Dr. Wujian Miao who not only inspired and helped with this
study, but has also been a mentor. Funding was provided by the U.S.
Naval Academy and the Defense Threat Reduction Agency.
NR 22
TC 4
Z9 4
U1 6
U2 15
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
SN 0013-4651
EI 1945-7111
J9 J ELECTROCHEM SOC
JI J. Electrochem. Soc.
PY 2013
VL 160
IS 10
BP H782
EP H786
DI 10.1149/2.005311jes
PG 5
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA 241ZO
UT WOS:000326207400104
ER
PT J
AU Giraldo, FX
Kelly, JF
Constantinescu, EM
AF Giraldo, F. X.
Kelly, J. F.
Constantinescu, E. M.
TI IMPLICIT-EXPLICIT FORMULATIONS OF A THREE-DIMENSIONAL NONHYDROSTATIC
UNIFIED MODEL OF THE ATMOSPHERE (NUMA)
SO SIAM JOURNAL ON SCIENTIFIC COMPUTING
LA English
DT Article
DE cloud-resolving model; compressible flow; element-based Galerkin
methods; Euler; global model; IMEX; Lagrange; Legendre; mesoscale model;
Navier-Stokes; nonhydrostatic; semi-implicit; spectral elements; time
integration
ID SEMIIMPLICIT TIME-INTEGRATORS; PARTIAL-DIFFERENTIAL-EQUATIONS;
DISCONTINUOUS GALERKIN METHODS; NAVIER-STOKES EQUATIONS; RUNGE-KUTTA
SCHEMES; SPECTRAL ELEMENT; MULTISTEP METHODS; ADVECTION
AB We derive an implicit-explicit (IMEX) formalism for the three-dimensional (3D) Euler equations that allow a unified representation of various nonhydrostatic flow regimes, including cloud resolving and mesoscale (flow in a 3D Cartesian domain) as well as global regimes (flow in spherical geometries). This general IMEX formalism admits numerous types of methods including single-stage multistep methods (e.g., Adams methods and backward difference formulas) and multistage single-step methods (e.g., additive Runge-Kutta methods). The significance of this result is that it allows a numerical model to reuse the same machinery for all classes of time-integration methods described in this work. We also derive two classes of IMEX methods, one-dimensional and 3D, and show that they achieve their expected theoretical rates of convergence regardless of the geometry (e. g., 3D box or sphere) and introduce a new second-order IMEX Runge-Kutta method that performs better than the other second-order methods considered. We then compare all the IMEX methods in terms of accuracy and efficiency for two types of geophysical fluid dynamics problems: buoyant convection and inertia-gravity waves. These results show that the high-order time-integration methods yield better efficiency particularly when high levels of accuracy are desired.
C1 [Giraldo, F. X.] US Navy, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
[Kelly, J. F.] Exa Corp, Burlington, MA 01803 USA.
[Constantinescu, E. M.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
RP Giraldo, FX (reprint author), US Navy, Postgrad Sch, Dept Appl Math, Monterey, CA 93943 USA.
EM fxgirald@nps.edu; jfk@exa.com; emconsta@mcs.anl.gov
FU Office of Naval Research [PE-0602435N]; National Science Foundation
(Division of Mathematical Sciences) [121670]; Air Force Office of
Scientific Research through the Computational Mathematics program;
Office of Advanced Scientific Computing Research, Office of Science,
U.S. Department of Energy [DE-AC02-06CH11357]
FX This author's work was supported by 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.; This author's work was supported by the Air Force
Office of Scientific Research through the Computational Mathematics
program and in part by the Office of Advanced Scientific Computing
Research, Office of Science, U.S. Department of Energy, under Contract
DE-AC02-06CH11357.
NR 31
TC 28
Z9 28
U1 3
U2 15
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1064-8275
EI 1095-7197
J9 SIAM J SCI COMPUT
JI SIAM J. Sci. Comput.
PY 2013
VL 35
IS 5
BP B1162
EP B1194
DI 10.1137/120876034
PG 33
WC Mathematics, Applied
SC Mathematics
GA 243WF
UT WOS:000326348400021
ER
PT S
AU Bruninga, R
Sorensen, JAT
AF Bruninga, Robert (Bob)
Sorensen, Jill A. T.
GP IEEE
TI Charging EV's efficiently NOW while waiting for the Smart Grid
SO 2013 IEEE GREEN TECHNOLOGIES CONFERENCE
SE IEEE Green Technologies Conference
LA English
DT Proceedings Paper
CT IEEE Green Technologies Conference (GREENTECH)
CY APR 04-05, 2013
CL Denver, CO
SP IEEE, IEEE Comp Soc, Boeing, URS, CCET, IEEE Denver Sect, IEEE Reg 5, IEEE USA
DE Electric Vehicles; EV; charging; Plug-in Hybrids; Level-1; Level-2;
EVSE; payin-to-plugin; charging at work; BEVI
AB Due to a century of gas-tank /gas-station legacy, most of the current focus on Electrical Vehicle (EV) charging has been with respect to public charging, range anxiety, charging speed, and grid impact. Unfortunately, this focus overlooks the existing grid structure that is readily available at little to no additional cost (the ubiquitous 120V outlet) and overlooks the convenience of charging-while-parked
The true promise of the EV is its ability to charge anywhere/ everywhere from the national grid instead of only at "stations". And the most prevalent, accessible, and visible manifestation of the grid is this standard 120v outlet (L1 charging). The often touted issues of availability, time-to-charge, and impact on the grid virtually vanish when EV's are simply plugged into a standard outlet while parked at home and at work.
Simple 120v charging is practical, low cost, efficient, and is a minimal impact approach to achieve smart grid functionality now while waiting for the future Smart Grid. Convenient technology exists to facilitate this simple "85% solution"but it also requires education and public outreach to be effective.
C1 [Bruninga, Robert (Bob)] US Naval Acad, Aerosp Dept, Annapolis, MD USA.
RP Bruninga, R (reprint author), US Naval Acad, Aerosp Dept, Annapolis, MD USA.
EM bruninga@usna.edu; jatsorensen@gmail.com
NR 3
TC 5
Z9 5
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2166-546X
BN 978-0-7695-4966-8
J9 IEEE GREEN TECHNOL
PY 2013
BP 1
EP 7
DI 10.1109/GreenTech.2013.11
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BHL31
UT WOS:000325778400001
ER
PT J
AU Feng, BK
Jenn, DC
AF Feng, Bo-Kai
Jenn, David C.
TI Grating Lobe Suppression for Distributed Digital Subarrays Using Virtual
Filling
SO IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
LA English
DT Article
DE Distributed subarray antennas; grating lobe suppression; matrix pencil
method; virtual elements
ID PHASED-ARRAYS
AB A receiving array processingmethod is presented that synthesizes the antenna response of a contiguous array from the outputs of physically separated arrays of subarrays. It involves filling the gaps between the subarrays with "virtual" elements, thus forming a contiguous array. Therefore, the synthesized pattern has no grating lobes, and amplitude tapering for sidelobe control can be applied. The contiguous array's response can be duplicated in a number of directions limited by the total number of elements. The directions of interest would normally be those of the desired signals (main beam) and interference or clutter (low sidelobes). The directions of arrival of the signals of interest must first be determined before synthesizing the contiguous array response. The modified matrix pencil method has been extended to handle the problem of multiple subarrays for both single and multiple snapshots. The performance of the synthesis method is examined as a function of signal-to-noise ratio (SNR) per element and various array parameters.
C1 [Feng, Bo-Kai; Jenn, David C.] Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
RP Feng, BK (reprint author), Naval Postgrad Sch, Dept Elect & Comp Engn, Monterey, CA 93943 USA.
EM bfeng@nps.edu; jenn@nps.edu
NR 13
TC 2
Z9 3
U1 1
U2 9
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1536-1225
EI 1548-5757
J9 IEEE ANTENN WIREL PR
JI IEEE Antennas Wirel. Propag. Lett.
PY 2013
VL 12
BP 1323
EP 1326
DI 10.1109/LAWP.2013.2285073
PG 4
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 243VY
UT WOS:000326347700006
ER
PT J
AU Mowry, M
Palaniuk, D
Luhrs, CC
Osswald, S
AF Mowry, Michael
Palaniuk, Dennis
Luhrs, Claudia C.
Osswald, Sebastian
TI In situ Raman spectroscopy and thermal analysis of the formation of
nitrogen-doped graphene from urea and graphite oxide
SO RSC ADVANCES
LA English
DT Article
ID WALL CARBON NANOTUBES; FUNCTIONALIZED GRAPHENE; REDUCTION; OXIDATION;
DECOMPOSITION; NANODIAMOND; EXFOLIATION; SPECTRA; SHEETS; TEMPERATURE
AB A comprehensive in situ analysis of the formation of graphene during the thermal exfoliation via reduction expansion synthesis (RES) of graphite oxide (GO) in the presence of urea is presented. The addition of urea expedites the exfoliation and reduction process while introducing nitrogen (N) impurities, which serve as dopants within the graphene lattice. The aim of this study is to provide deeper insight into the physical and chemical processes that take place during the synthesis and to gain better understanding of the effect of urea on the reduction, thermal exfoliation and doping of GO. In situ Raman spectroscopy was employed to shed light on the structural changes that occurred during the GO-graphene transformation in the temperature range 25-800 degrees C. Thermogravimetric analysis, differential scanning calorimetry, and mass spectroscopy, were used as complementary techniques to monitor sample weight, reaction heat, and gas evolution, in order to distinguish between the various chemical reactions. Finally, the above characterization methods were utilized to gather information about the thermal stability and reactivity of the N-doped graphene by exposing the synthesized sample to additional heating-cooling cycles, after the initial transformation was completed.
C1 [Mowry, Michael; Palaniuk, Dennis; Luhrs, Claudia C.; Osswald, Sebastian] Naval Postgrad Sch, Dept Mech & Aerosp Engn, Monterey, CA 93943 USA.
[Osswald, Sebastian] Naval Postgrad Sch, Dept Phys, Monterey, CA 93943 USA.
RP Osswald, S (reprint author), Naval Postgrad Sch, Dept Mech & Aerosp Engn, 700 Dyer Rd,Watkins Hall, Monterey, CA 93943 USA.
EM sosswald@nps.edu
FU NPS Office of Research
FX The authors appreciate the support that the Research Initiation Program
from the NPS Office of Research provided to conduct this work. We also
thank Dr. Kateryna Artyushkova (University of New Mexico), who collected
the XPS data presented in this manuscript.
NR 70
TC 16
Z9 16
U1 6
U2 56
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2046-2069
J9 RSC ADV
JI RSC Adv.
PY 2013
VL 3
IS 44
BP 21763
EP 21775
DI 10.1039/c3ra42725k
PG 13
WC Chemistry, Multidisciplinary
SC Chemistry
GA 239WM
UT WOS:000326056600095
ER
PT J
AU Baer, W
AF Baer, Wolfgang
BE Pereira, A
Lehmann, D
TI A conceptual framework embedding conscious experience in physical
processes
SO UNITY OF MIND, BRAIN AND WORLD: CURRENT PERSPECTIVES ON A SCIENCE OF
CONSCIOUSNESS
LA English
DT Article; Book Chapter
ID QUANTUM COHERENCE; MODEL
C1 [Baer, Wolfgang] Naval Postgrad Sch, Monterey, CA USA.
[Baer, Wolfgang] Nascent Syst Inc, St Louis, MO USA.
RP Baer, W (reprint author), Nascent Syst Inc, St Louis, MO USA.
NR 48
TC 3
Z9 3
U1 0
U2 1
PU CAMBRIDGE UNIV PRESS
PI CAMBRIDGE
PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND
BN 978-1-107-02629-2
PY 2013
BP 113
EP 148
PG 36
WC Psychology, Clinical
SC Psychology
GA BHO37
UT WOS:000326088200005
ER
PT S
AU Diptee, D
Diptee, J
AF Diptee, Darryl
Diptee, Jason
BE Zeng, QA
TI Tacit knowledge acquisition in virtual teams
SO 2013 WIRELESS TELECOMMUNICATIONS SYMPOSIUM (WTS)
SE Wireless Telecommunications Symposium
LA English
DT Proceedings Paper
CT 12th Annual Wireless Telecommunications Symposium (WTS) - Global
Wireless Communications - Future Directions
CY APR 17-19, 2013
CL Phoenix, AZ
DE Tacit Knowledge Acquisition Model; Knowledge Exchange; Virtual Teams;
Trust; TKAM
AB Each year more organizations shift from costly brick-and-mortar assets to low-cost cyber equivalents which enable geographically spread teamwork via Social Networking Applications (SNAs). While explicit knowledge exchange is densely represented in the literature, there seems to be a lack of sufficient research on the dynamics of tacit knowledge among virtual team members in SNAs. This research paper outlines the results of an international Global Chemical Warfare Team Collaboration (GCWTC) experiment which suggests that tacit knowledge does not flow between people as traditionally prescribed, but is rather only partly inoculated followed by spontaneous self-generation as a factor of trust levels, time exposure and personal communication and comprehension traits. This research triangulates upon a new and exciting theoretical model with which to understand tacit knowledge acquisition. An invitation is extended to utilize the results of this mixed methods study as a foundation to build and test hypotheses for future quantitative research
C1 [Diptee, Darryl] Naval Postgrad Sch, Dept Informat Sci, Monterey, CA 93943 USA.
[Diptee, Jason] Florida Career Coll, Dept Sci, Jacksonville, FL USA.
RP Diptee, D (reprint author), Naval Postgrad Sch, Dept Informat Sci, Monterey, CA 93943 USA.
EM darryl.diptee@navy.mil; jdiptee@gmail.com
FU Office of Naval Research (ONR)
FX Research sponsored by the Office of Naval Research (ONR).
NR 24
TC 0
Z9 0
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1934-5070
BN 978-1-4673-5013-6; 978-1-4673-5011-2
J9 WIREL TELECOMM SYMP
PY 2013
PG 8
WC Computer Science, Hardware & Architecture; Engineering, Electrical &
Electronic; Telecommunications
SC Computer Science; Engineering; Telecommunications
GA BHK66
UT WOS:000325729900001
ER
PT J
AU Chervin, CN
Wattendorf, MJ
Long, JW
Kucko, NW
Rolison, DR
AF Chervin, Christopher N.
Wattendorf, Michael J.
Long, Jeffrey W.
Kucko, Nathan W.
Rolison, Debra R.
TI Carbon Nanofoam-Based Cathodes for Li-O-2 Batteries: Correlation of Pore
Solid Architecture and Electrochemical Performance
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID ORGANIC ELECTROLYTE BATTERY; ETHER-BASED ELECTROLYTES; LITHIUM-OXYGEN
BATTERY; LI-AIR BATTERIES; LI/AIR BATTERIES; OPTIMIZATION; CATALYST;
AEROGELS; POROSITY; OXIDES
AB Freestanding, binder-free carbon nanofoam papers afford the opportunity to gauge the influence of pore size on the discharge capacity of Li-O-2 cells. Four sets of carbon nanofoam papers were synthesized from resorcinol-formaldehyde sols, with pore size distributions in pyrolyzed forms ranging from mesopores (5-50 nm) to a size regime not represented in the literature for Li-O-2 cathodes-small macropores (50-200 nm). The first-cycle discharge capacity in cells containing 0.1 M LiClO4 in dipropylene glycol dimethyl ether tracks the average pore size distribution in the carbon nanofoam cathode, rather than the specific surface area of the nanoscale carbon network or its total pore volume. The macroporous nanofoams yield cathode specific capacity of 1000-1250 mA h g(-1) at -0.1 mA cm(-2) discharge rate, approximately twice that of the mesoporous nanofoams (similar to 580-670 mA h g(-1)), even though the macroporous foams have lower specific surface areas (270 and 375 vs. >400 m(2) g(-1)). The specific capacity of the cathode decreases as the thickness of macroporous carbon nanofoam paper is increased from 180- to 530-mu m, which indicates that the interior pore volume is underutilized, particularly with thicker nanofoams. For the four pore-solid nanofoam architectures studied, the specific capacity is limited by pore occlusion arising from solid Li2O2 product that is electrogenerated near the outer boundaries of the nanofoams. (C) 2013 The Electrochemical Society. All rights reserved.
C1 [Chervin, Christopher N.; Wattendorf, Michael J.; Long, Jeffrey W.; Kucko, Nathan W.; Rolison, Debra R.] US Naval Res Lab, Surface Chem Branch, Washington, DC 20375 USA.
RP Chervin, CN (reprint author), US Naval Res Lab, Surface Chem Branch, Washington, DC 20375 USA.
EM christopher.chervin@nrl.navy.mil; jeffrey.long@nrl.navy.mil
RI Kucko, Nathan/K-8589-2015
FU U.S. Office of Naval Research
FX This work was supported by the U.S. Office of Naval Research. M.J.W.
(Princeton University) and N.W.K. (Alfred University) were STEP
undergraduate science aides at the NRL.
NR 52
TC 19
Z9 19
U1 5
U2 34
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
SN 0013-4651
EI 1945-7111
J9 J ELECTROCHEM SOC
JI J. Electrochem. Soc.
PY 2013
VL 160
IS 9
BP A1510
EP A1516
DI 10.1149/2.070309jes
PG 7
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA 220PY
UT WOS:000324600600027
ER
PT S
AU Bayya, S
Villalobos, G
Kim, W
Sanghera, J
Chin, G
Hunt, M
Sadowski, B
Miklos, F
Aggarwal, I
AF Bayya, Shyam
Villalobos, Guillermo
Kim, Woohong
Sanghera, Jas
Chin, Geoff
Hunt, Michael
Sadowski, Bryan
Miklos, Fritz
Aggarwal, Ishwar
BE Robichaud, JL
Krodel, M
Goodman, WA
TI Recent developments in transparent spinel ceramic and composite windows
SO MATERIAL TECHNOLOGIES AND APPLICATIONS TO OPTICS, STRUCTURES,
COMPONENTS, AND SUB-SYSTEMS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Material Technologies and Applications to Optics,
Structures, Components, and Sub-Systems
CY AUG 26-28, 2013
CL San Diego, CA
SP SPIE
DE Spinel; absorption loss; High Energy Laser; Photonic mast; BGG glass;
composite; ion-exchange
AB The U. S. Naval Research Laboratory has pioneered the development of sintering processes for making highly transparent optical ceramics. For example, we have demonstrated the fabrication of record low absorption loss spinel as an exit window for High Energy Laser systems and rare earth doped Y2O3 and Lu2O3 for solid-state ceramic lasers. We have also developed thick spinel windows for submarine photonic masts and predicted the performance of an imaging system using testing and modeling. More recently, we have developed a novel approach of hot pressing where a transparent ceramic is produced in the net shape without requiring post polishing. This technology will result in significant cost savings associated with polishing the final optical element. We are also developing motheye structures on spinel surface to provide rugged anti-reflective solutions.
We had earlier identified a Barium GalloGermanate (BGG) glass with matching index and expansion coefficient to spinel. We had demonstrated fabrication of a laminated dome for the Joint Air to Ground Missile (JAGM) program and the technology was transitioned to industry. We have pushed this technology further by developing a BGG glass spinel ceramic transparent micro-composite, which can be processed well below spinel sintering temperatures. To address the relatively lower strength of BGG glass compared with spinel, we developed an ion-exchange process and achieved strengths up to 450 MPa. This paper gives a summary of our recent findings.
C1 [Bayya, Shyam; Villalobos, Guillermo; Kim, Woohong; Sanghera, Jas] Naval Res Lab, Code 5620,4555 Overlook Av SW, Washington, DC 20375 USA.
[Hunt, Michael] Univ Res Fdn, Greenbelt, MD 20770 USA.
[Sadowski, Bryan; Miklos, Fritz; Aggarwal, Ishwar] Def Solut Inc, Crofton 21114, MD USA.
RP Bayya, S (reprint author), Naval Res Lab, Code 5620,4555 Overlook Av SW, Washington, DC 20375 USA.
NR 5
TC 1
Z9 1
U1 0
U2 6
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9687-4
J9 PROC SPIE
PY 2013
VL 8837
AR UNSP 88370V
DI 10.1117/12.2024111
PG 9
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA BHN37
UT WOS:000325971100027
ER
PT S
AU Bayya, SS
Villalobos, GR
Hunt, MP
Sanghera, JS
Sadowski, BM
Aggarwal, ID
Cinibulk, M
Carney, C
Keller, K
AF Bayya, Shyam S.
Villalobos, Guillermo R.
Hunt, Michael P.
Sanghera, Jasbinder S.
Sadowski, Bryan M.
Aggarwal, Ishwar D.
Cinibulk, Michael
Carney, Carmen
Keller, Kristin
BE Robichaud, JL
Krodel, M
Goodman, WA
TI Development of Transparent Polycrystalline Beta-Silicon Carbide
SO MATERIAL TECHNOLOGIES AND APPLICATIONS TO OPTICS, STRUCTURES,
COMPONENTS, AND SUB-SYSTEMS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Material Technologies and Applications to Optics,
Structures, Components, and Sub-Systems
CY AUG 26-28, 2013
CL San Diego, CA
SP SPIE
DE silicon carbide; transparent; ceramic; sol-gel; Field Assisted Sintering
Technology (FAST)
ID REDUCTION
AB Transparent beta-SiC is of great interest because its high strength, low coefficient of thermal expansion, very high thermal conductivity, and cubic crystal structure give it a very high thermal shock resistance. A transparent, polycrystalline beta- SiC window will find applications in armor, hypersonic missiles, and thermal control for thin disc lasers. SiC is currently available as either small transparent vapor grown disks or larger opaque shapes. Neither of which are useful in window applications. We are developing sintering technology to enable transparent SiC ceramics. This involves developing procedures to make high purity powders and studying their densification behavior. We have been successful in demonstrating transparency in thin sections using Field Assisted Sintering Technology (FAST). This paper will discuss the reaction mechanisms in the formation of beta-SiC powder and its sintering behavior in producing transparent ceramics.
C1 [Bayya, Shyam S.; Villalobos, Guillermo R.; Sanghera, Jasbinder S.] Naval Res Lab, Code 5622,4555 Overlook Ave SW, Washington, DC 20375 USA.
[Hunt, Michael P.] Univ Res Fdn, Greenbelt, MD 20770 USA.
[Sadowski, Bryan M.] Air Force Def Solut, Herndon, VA 20171 USA.
[Cinibulk, Michael] US Air Force, Res Lab, Wright Patterson AFB, OH USA.
[Carney, Carmen; Keller, Kristin] UES Inc, Dayton, OH USA.
RP Bayya, SS (reprint author), Naval Res Lab, Code 5622,4555 Overlook Ave SW, Washington, DC 20375 USA.
NR 12
TC 2
Z9 2
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 978-0-8194-9687-4
J9 PROC SPIE
PY 2013
VL 8837
AR UNSP 88370S
DI 10.1117/12.2023954
PG 7
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA BHN37
UT WOS:000325971100024
ER
PT S
AU Schultz, R
Chen, SY
Wang, YL
Liu, CH
Chang, CI
AF Schultz, Robert
Chen, Shih-Yu
Wang, Yulei
Liu, Chunhong
Chang, Chein-, I
BE Huang, B
Plaza, AJ
Chang, CI
TI Progressive Band Processing of Anomaly Detection
SO SATELLITE DATA COMPRESSION, COMMUNICATIONS, AND PROCESSING IX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Satellite Data Compression, Communications, and Processing
IX
CY AUG 26-27, 2013
CL San Diego, CA
SP SPIE
DE Anomaly detection; Band selection (BS); Progressive band process (PBP);
Reed-Xiaoli detector (RXD)
AB Band selection (BS) has advantages over data dimensionality in satellite communication and data transmission in the sense that spectral bands can be selected by users at their discretion for data analysis, while preserving data fidelity. However, to materialize BS in such practical applications several issues need to be addressed. One is how many bands required for BS. Another is how to select appropriate bands. A third one is how to take advantage of previously selected bands without re-implementing BS. Finally and most important one is how to process BS as number of bands varies. This paper presents a specific application to progressive band processing of anomaly detection, which does not require BS and can be carried out in a progressive fashion with data updated recursively band by band in the same way that data is processed by a Kalman filter.
C1 [Schultz, Robert] US Naval Acad, Annapolis, MD 21402 USA.
[Chen, Shih-Yu; Chang, Chein-, I] Univ Maryland Baltimore Cty, Remote Sensing Signal & Image Proc Lab, Dept Comp Sci & Elect Engn, Baltimore, MD 21228 USA.
[Wang, Yulei] Harbin Engn Univ, Informat & Commun Engn Coll, Harbin, Peoples R China.
[Liu, Chunhong] China Agr Univ, Coll Informat & Elect Engn, Beijing, Peoples R China.
RP Schultz, R (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
NR 7
TC 0
Z9 0
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9721-5
J9 PROC SPIE
PY 2013
VL 8871
AR UNSP 88710P
DI 10.1117/12.2027863
PG 11
WC Engineering, Electrical & Electronic; Optics; Telecommunications
SC Engineering; Optics; Telecommunications
GA BHN48
UT WOS:000325974300018
ER
PT B
AU Zervaki, AD
Haidemenopoulos, GN
Lambrakos, SG
AF Zervaki, A. D.
Haidemenopoulos, G. N.
Lambrakos, S. G.
BE DebRoy, T
David, SA
DuPont, JN
Koseki, T
Bhadeshia, HK
TI Analysis of Heat Affected Zone in Al1239 and Al2198 Laser Welds Using
Inverse Modeling
SO TRENDS IN WELDING RESEARCH: PROCEEDINGS OF THE 9TH INTERNATIONAL
CONFERENCE
LA English
DT Proceedings Paper
CT 9th International Conference on Trends in Welding Research
CY JUN 04-08, 2012
CL Chicago, IL
SP ASM Int
AB Case study analyses of Al2139 and Al2198 laser welds are presented. These analyses demonstrate the concept of constructing parameter spaces for prediction of properties within the Heat Affected Zone (HAZ) of welds using inverse modeling, which are in turn for process control. The construction of these parameter spaces consists of two procedures. One procedure entails calculation of a parameterized set of temperature histories by inverse analysis of the heat deposition occurring during welding. The other procedure entails correlating these temperature histories with a specific physical property of the weld that is measurable. The analysis presented here examines some characteristics of inverse modeling with respect to the prediction of hardness within the HAZ for deep penetration laser welding of the Aluminum alloys Al2139 and Al2198. This study further demonstrates the feasibility of constructing a parameter space for the prediction of weld properties using weld cross section measurements that are independent of weld process conditions.
C1 [Zervaki, A. D.; Haidemenopoulos, G. N.] Univ Thessaly, Dept Mech Engn, Volos 38334, Greece.
[Lambrakos, S. G.] Ctr Computat Mat, Mat Sci & Technol Div, Naval Res Lab, Washington, DC USA.
RP Zervaki, AD (reprint author), Univ Thessaly, Dept Mech Engn, Volos 38334, Greece.
RI Haidemenopoulos, Gregory/C-6496-2014
OI Haidemenopoulos, Gregory/0000-0001-9071-0118
NR 11
TC 0
Z9 0
U1 0
U2 2
PU ASM INTERNATIONAL
PI MATERIALS PARK
PA 9503 KINSMAN RD, MATERIALS PARK, OH 44073 USA
BN 978-1-62708-998-2
PY 2013
BP 117
EP +
PG 3
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA BHJ89
UT WOS:000325662400016
ER
PT B
AU Cooper, KP
Shabaev, A
Lambrakos, SG
AF Cooper, K. P.
Shabaev, A.
Lambrakos, S. G.
BE DebRoy, T
David, SA
DuPont, JN
Koseki, T
Bhadeshia, HK
TI General Aspects of a Methodology for Inverse Thermal Analysis of
Drop-by-Drop Liquid-Metal Deposition
SO TRENDS IN WELDING RESEARCH: PROCEEDINGS OF THE 9TH INTERNATIONAL
CONFERENCE
LA English
DT Proceedings Paper
CT 9th International Conference on Trends in Welding Research
CY JUN 04-08, 2012
CL Chicago, IL
SP ASM Int
AB An overview is presented of general aspects of a methodology for inverse thermal analysis of drop-by-drop liquid-metal deposition based on Green's functions. This methodology is constructed according to the general physical characteristics of rapid prototyping processes employing drop-by-drop liquid-metal deposition. This methodology represents a specific extension of a methodology using basis functions that was introduced previously for inverse analysis of welding processes, and of energy deposition in general. The formal structure of the methodology follows from a specific definition of the inverse heat transfer problem, which is well posed for inverse analysis of heat deposition processes. This definition is based on the assumption of the availability of information concerning spatially distributed boundary and constraint values. This information would be obtained in principle from both experimental measurements obtained in the laboratory, as well as numerical simulations performed using models having been constructed using basic theory.
C1 [Cooper, K. P.; Lambrakos, S. G.] Naval Res Lab, Washington, DC 20375 USA.
RP Cooper, KP (reprint author), Naval Res Lab, Washington, DC 20375 USA.
NR 10
TC 0
Z9 0
U1 0
U2 1
PU ASM INTERNATIONAL
PI MATERIALS PARK
PA 9503 KINSMAN RD, MATERIALS PARK, OH 44073 USA
BN 978-1-62708-998-2
PY 2013
BP 728
EP 737
PG 10
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA BHJ89
UT WOS:000325662400101
ER
PT B
AU Everett, RK
Wolk, JN
Shabaev, A
Lambrakos, SG
AF Everett, R. K.
Wolk, J. N.
Shabaev, A.
Lambrakos, S. G.
BE DebRoy, T
David, SA
DuPont, JN
Koseki, T
Bhadeshia, HK
TI Issues Concerning Small Additions of Ni to Ti Friction Stir Welds
SO TRENDS IN WELDING RESEARCH: PROCEEDINGS OF THE 9TH INTERNATIONAL
CONFERENCE
LA English
DT Proceedings Paper
CT 9th International Conference on Trends in Welding Research
CY JUN 04-08, 2012
CL Chicago, IL
SP ASM Int
ID STEEL
AB Recent experimental measurements, involving small additions of Ni foil to CP-Ti friction stir welds (FSWs), have motivated a re-evaluation of issues concerning material flow and the resulting microstructure in these welds. One issue concerns the fact that the Ni additions improved weld microstructure. This implies a need for better understanding the basic mechanisms whereby the introduction of small amounts of this fast diffuser into the stirred region results in improved microstructure and associated improvements in weld performance. Another issue concerns the fact that a relatively high level of detailed information related to material flow patterns occurring in FS welds of Ti can be experimentally measured by x-ray microtomography using the introduced Ni as a flow tracer. This potential availability of large amounts of flow pattern information for Ti FSWs informs our need for a predictive methodology that incorporates large amounts of flow pattern information.
C1 [Everett, R. K.; Lambrakos, S. G.] Naval Res Lab, Div Mat Sci & Technol, Washington, DC USA.
RP Everett, RK (reprint author), Naval Res Lab, Div Mat Sci & Technol, Washington, DC USA.
OI Everett, Richard/0000-0002-6725-9442
NR 14
TC 1
Z9 1
U1 1
U2 3
PU ASM INTERNATIONAL
PI MATERIALS PARK
PA 9503 KINSMAN RD, MATERIALS PARK, OH 44073 USA
BN 978-1-62708-998-2
PY 2013
BP 842
EP 847
PG 6
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA BHJ89
UT WOS:000325662400117
ER
PT B
AU Lambrakos, SG
Milewski, JO
AF Lambrakos, S. G.
Milewski, J. O.
BE DebRoy, T
David, SA
DuPont, JN
Koseki, T
Bhadeshia, HK
TI Case-Study Inverse Thermal Analysis of 21-6-9 Stainless Steel Laser
Welds
SO TRENDS IN WELDING RESEARCH: PROCEEDINGS OF THE 9TH INTERNATIONAL
CONFERENCE
LA English
DT Proceedings Paper
CT 9th International Conference on Trends in Welding Research
CY JUN 04-08, 2012
CL Chicago, IL
SP ASM Int
AB Case study inverse thermal analyses of 21-6-9 stainless steel laser welds are presented. These analyses employ a methodology that is in terms of analytical basis functions for inverse thermal analysis of steady state energy deposition in plate structures. The results of the case studies presented 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 case studies presented also examine specific aspects the inverse-analysis methodology relevant to further development of algorithms for its application in practice.
C1 [Lambrakos, S. G.] 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.
NR 8
TC 0
Z9 0
U1 1
U2 1
PU ASM INTERNATIONAL
PI MATERIALS PARK
PA 9503 KINSMAN RD, MATERIALS PARK, OH 44073 USA
BN 978-1-62708-998-2
PY 2013
BP 1050
EP 1056
PG 7
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA BHJ89
UT WOS:000325662400146
ER
PT B
AU Coxson, GE
Russo, JC
AF Coxson, Gregory E.
Russo, Jon C.
GP IEEE
TI Efficient Exhaustive Search for Binary Complementary Code Sets
SO 2013 47TH ANNUAL CONFERENCE ON INFORMATION SCIENCES AND SYSTEMS (CISS)
LA English
DT Proceedings Paper
CT 47th Annual Conference on Information Sciences and Systems (CISS)
CY MAR 20-22, 2013
CL Baltimore, MD
DE complementary code set; Hadamard matrix; autocorrelation sidelobes;
binary code; exhaustive search
AB Binary complementary code sets offer a possibility that single binary codes cannot -zero aperiodic autocorrelation sidelobe levels. These code sets can be viewed as the columns of so-called complementary code matrices, or CCMs. This matrix formulation is particularly useful in gaining the insight needed for developing an efficient exhaustive search for complementary code sets. An exhaustive search approach is described, designed to find all sets of K complementary binary codes of length N, for specified N and K. Results for several cases are examined.
C1 [Coxson, Gregory E.; Russo, Jon C.] Naval Res Lab, Washington, DC USA.
RP Coxson, GE (reprint author), Naval Res Lab, Washington, DC USA.
NR 17
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5239-0; 978-1-4673-5237-6
PY 2013
PG 6
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA BHE56
UT WOS:000325182600069
ER
PT B
AU Dashtestani, H
Cotae, P
Moskowitz, IS
AF Dashtestani, Hadis
Cotae, Paul
Moskowitz, Ira S.
GP IEEE
TI On the Optimal Placement of Underwater Sensors in a Tree Shaped
Multi-hop Hierarchical Network
SO 2013 47TH ANNUAL CONFERENCE ON INFORMATION SCIENCES AND SYSTEMS (CISS)
LA English
DT Proceedings Paper
CT 47th Annual Conference on Information Sciences and Systems (CISS)
CY MAR 20-22, 2013
CL Baltimore, MD
DE physical layer; tree structured topology; acoustic wireless; underwater
sensor communication; channel capacity; acoustic channel; BFSK; CDMA
AB We analyze the optimal location of underwater acoustic sensor nodes, with respect to the capacity of the wireless links between the nodes, in a multi-hop hierarchical tree structure based on the information each node has to transfer between underwater levels. A novel algorithm is proposed to calculate the optimal distances between sensor nodes for the proposed hierarchical network. Numerical results for different channel conditions; such as an ideal channel, an imperfect channel with a certain BER, and a channel with interference, are provided. In addition, our algorithm is used to obtain the optimal frequency for each level in the tree shaped network for the above-mentioned conditions.
C1 [Dashtestani, Hadis; Cotae, Paul] Univ Dist Columbia, Sch Engn & Appl Sci, Dept Elect & Comp Engn, Washington, DC 20008 USA.
[Moskowitz, Ira S.] Naval Res Lab, Ctr High Assurance Comp Syst, Washington, DC 20375 USA.
RP Dashtestani, H (reprint author), Univ Dist Columbia, Sch Engn & Appl Sci, Dept Elect & Comp Engn, Washington, DC 20008 USA.
EM hadis.dashtestani@udc.edu; pcotae@udc.edu; ira.moskowitz@nrl.navy.mil
FU Department of Defense (DoD) [W911NE-11-1-0144]
FX The first two authors thank for support received from the Department of
Defense (DoD) Grant W911NE-11-1-0144.
NR 20
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5239-0; 978-1-4673-5237-6
PY 2013
PG 6
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA BHE56
UT WOS:000325182600098
ER
PT B
AU Safier, PN
Moskowitz, IS
Allwein, G
AF Safier, Pedro N.
Moskowitz, Ira S.
Allwein, Gerard
GP IEEE
TI Capacity of an Intensity Interferometry Channel
SO 2013 47TH ANNUAL CONFERENCE ON INFORMATION SCIENCES AND SYSTEMS (CISS)
LA English
DT Proceedings Paper
CT 47th Annual Conference on Information Sciences and Systems (CISS)
CY MAR 20-22, 2013
CL Baltimore, MD
DE Intensity interferometry; steganography; wireless sensor networks
ID SENSOR NETWORKS; FLUCTUATIONS; RADIATION; QUANTUM; COHERENCE; SECURITY;
STARS; NOISE; LIGHT
AB In this work we show that intensity interferometry may be used to send a non-trivial amount of data steganographically over the air. Intensity interferometry was developed by Hanbury Brown and Twiss [1], [2], and originally used to measure the angular diameter of stars [3] at both optical and radio frequencies. Since then, this method has been used in many other fields to measure the size of regions of interest. Here we introduce an opposite paradigm and show that the technique may be used to transmit information wirelessly.
This channel does not require additional frequency bands or additional bandwidth as it relies on a phenomenon that is already present but unexploited in current systems, and it has the potential to be highly secure against eavesdropping, and thus shows promise as a means of steganographic communication. We discuss the information theory of our new type of channel and address the trade-off between channel capacity and signaling rate. Finally, we propose communication through intensity interferometry as a method of secure steganographic communication in general and suggest its application in particular for secure communications in networks of wireless sensors.
C1 [Safier, Pedro N.] S&J Solut LLC, 107 S West St PMB 509, Alexandria, VA 22314 USA.
[Moskowitz, Ira S.; Allwein, Gerard] Naval Res Lab, Cte High Assurance Comp, Washington, DC 20375 USA.
RP Safier, PN (reprint author), S&J Solut LLC, 107 S West St PMB 509, Alexandria, VA 22314 USA.
EM pedro-safier@sj-solutions.com; ira.moskowitz@nrl.navy.mil;
gerard.allwein@nrl.navy.mil
NR 26
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5239-0; 978-1-4673-5237-6
PY 2013
PG 6
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA BHE56
UT WOS:000325182600079
ER
PT B
AU Wagner, KT
Doroslovacki, MI
AF Wagner, Kevin T.
Doroslovacki, Milos I.
GP IEEE
TI Transform Domain CPtNLMS Algorithms
SO 2013 47TH ANNUAL CONFERENCE ON INFORMATION SCIENCES AND SYSTEMS (CISS)
LA English
DT Proceedings Paper
CT 47th Annual Conference on Information Sciences and Systems (CISS)
CY MAR 20-22, 2013
CL Baltimore, MD
DE Adaptive filtering; convergence; least mean square algorithms
AB The concept of self-orthogonalizing adaptation is extended from the least mean square algorithm to the general case of complex proportionate type normalized least mean square algorithms. The derived algorithm requires knowledge of the input signal's covariance matrix. Implementation of the algorithm using a fixed transform such as the discrete cosine transform or discrete wavelet transform is presented for applications in which the input signal's covariance matrix is unknown.
C1 [Wagner, Kevin T.] Naval Res Lab, Div Radar, Washington, DC 20375 USA.
[Doroslovacki, Milos I.] George Washington Univ, Dept Elect & Comp Engn, Washington, DC 20052 USA.
RP Wagner, KT (reprint author), Naval Res Lab, Div Radar, Washington, DC 20375 USA.
NR 5
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5239-0; 978-1-4673-5237-6
PY 2013
PG 4
WC Computer Science, Information Systems; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA BHE56
UT WOS:000325182600010
ER
PT B
AU Piepmeier, JA
Firebaugh, SL
AF Piepmeier, Jenelle Armstrong
Firebaugh, Samara L.
GP IEEE
TI Visual Servo Control of Electromagnetic Actuation for a Family of
Microrobot Devices
SO 2013 IEEE WORKSHOP ON ROBOT VISION (WORV)
LA English
DT Proceedings Paper
CT IEEE Workshop on Robot Vision (WORV)
CY JAN 15-17, 2013
CL FL
SP IEEE
AB Microrobots have a number of potential applications for micromanipulation and assembly, but also offer challenges in power and control. This paper describes the control system for magnetically actuated microrobots operating 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 mm vial placed at the center of four electromagnets Pulse width modulation of the electromagnet currents is used to control robot speed and direction, and a linear relationship between robot speed and duty cycle was observed, although the slope of that dependence varied with robot type and magnet. A proportional controller has been implemented and characterized. The steady-state error with this controller ranged from 6.4 to 12.8 pixels, or 90-180 mu m.
C1 [Piepmeier, Jenelle Armstrong; Firebaugh, Samara L.] US Naval Acad, Annapolis, MD 21402 USA.
RP Piepmeier, JA (reprint author), US Naval Acad, Annapolis, MD 21402 USA.
EM piepmeie@usna.edu; firebaug@usna.edu
NR 16
TC 1
Z9 1
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-5648-0; 978-1-4673-5646-6
PY 2013
BP 209
EP 214
PG 6
WC Computer Science, Artificial Intelligence; Engineering, Electrical &
Electronic; Robotics
SC Computer Science; Engineering; Robotics
GA BHF97
UT WOS:000325279400033
ER
PT S
AU Huang, L
Lambrakos, SG
Shabaev, A
Massa, L
Yapijakis, C
AF Huang, L.
Lambrakos, S. G.
Shabaev, A.
Massa, L.
Yapijakis, C.
BE VoDinh, T
Lieberman, RA
Gauglitz, GG
TI THz Absorption Spectra and Stability of Fe Water Complexes Calculated by
Density Functional Theory
SO ADVANCED ENVIRONMENTAL, CHEMICAL, AND BIOLOGICAL SENSING TECHNOLOGIES X
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advanced Environmental, Chemical, and Biological Sensing
Technologies X
CY APR 29-30, 2013
CL Baltimore, MD
SP SPIE
DE THz spectra; dielectric response; DFT
ID FILTRATION REMOVES COLOR; GAUSSIAN-BASIS SETS; TERAHERTZ SPECTRUM;
EXPLOSIVES; TURBIDITY; ENERGY
AB Monitoring of water contaminants implies a need for determining their dielectric response properties with respect to electromagnetic wave excitation at various frequencies. Iron is a naturally occurring water contaminant resulting from decaying vegetation, which is at much higher concentrations than any other metal contaminant. The present study uses density functional theory (DFT) for the calculation of ground state resonance structure and molecular stability analysis for Fe water complexes. The calculations presented are for excitation by electromagnetic waves at frequencies within the THz range. Dielectric response functions calculated by DFT can be used for the analysis of water contaminants. These functions provide quantitative initial estimates of spectral response features for subsequent adjustment with respect to additional information such as laboratory measurements and other types of theory based calculations. In addition, with respect to qualitative analysis, DFT calculated absorption spectra provide for molecular level interpretation of response structure. The DFT software GAUSSIAN was used for the calculations of ground state resonance structure presented here.
C1 [Huang, L.; Lambrakos, S. G.] Naval Res Lab, Washington, DC 20375 USA.
RP Huang, L (reprint author), Naval Res Lab, 4555 Overlook Ave,SW, Washington, DC 20375 USA.
NR 29
TC 0
Z9 0
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9509-9
J9 PROC SPIE
PY 2013
VL 8718
AR 871803
DI 10.1117/12.2014652
PG 8
WC Remote Sensing; Optics
SC Remote Sensing; Optics
GA BHH32
UT WOS:000325411000002
ER
PT S
AU Bangs, CF
Kruse, FA
Olsen, CR
AF Bangs, Corey F.
Kruse, Fred A.
Olsen, Chris R.
BE Shen, SS
Lewis, PE
TI Spectral dependence of texture features integrated with hyperspectral
data for area target classification improvement
SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND
ULTRASPECTRAL IMAGERY XIX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Algorithms and Technologies for Multispectral,
Hyperspectral, and Ultraspectral Imagery XIX
CY APR 29-MAY 02, 2013
CL Baltimore, MD
SP SPIE
DE Hyperspectral analysis; HSI texture; Fused spectral/spatial
classification; Area targets; Land use
ID MAXIMUM-LIKELIHOOD CLASSIFICATION; IMAGE CLASSIFICATION;
FEATURE-EXTRACTION; IDENTIFICATION; TERRAIN
AB Hyperspectral data were assessed to determine the effect of integrating spectral data and extracted texture feature data on classification accuracy. Four separate spectral ranges (hundreds of spectral bands total) were used from the Visible and Near Infrared (VNIR) and Shortwave Infrared (SWIR) portions of the electromagnetic spectrum. Haralick texture features (contrast, entropy, and correlation) were extracted from the average gray-level image for each of the four spectral ranges studied. A maximum likelihood classifier was trained using a set of ground truth regions of interest (ROIs) and applied separately to the spectral data, texture data, and a fused dataset containing both. Classification accuracy was measured by comparison of results to a separate verification set of test ROIs. Analysis indicates that the spectral range (source of the gray-level image) used to extract the texture feature data has a significant effect on the classification accuracy. This result applies to texture-only classifications as well as the classification of integrated spectral data and texture feature data sets. Overall classification improvement for the integrated data sets was near 1%. Individual improvement for integrated spectral and texture classification of the "Urban" class showed approximately 9% accuracy increase over spectral-only classification. Texture-only classification accuracy was highest for the "Dirt Path" class at approximately 92% for the spectral range from 947 to 1343nm. This research demonstrates the effectiveness of texture feature data for more accurate analysis of hyperspectral data and the importance of selecting the correct spectral range to be used for the gray-level image source to extract these features.
C1 [Bangs, Corey F.; Kruse, Fred A.; Olsen, Chris R.] Naval Postgrad Sch, Ctr Remote Sensing, Monterey, CA 93943 USA.
RP Bangs, CF (reprint author), Naval Postgrad Sch, Ctr Remote Sensing, Monterey, CA 93943 USA.
NR 24
TC 0
Z9 0
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9534-1
J9 PROC SPIE
PY 2013
VL 8743
AR 87431X
DI 10.1117/12.2015201
PG 13
WC Optics; Spectroscopy
SC Optics; Spectroscopy
GA BHH00
UT WOS:000325394800062
ER
PT S
AU Daniel, BJ
Schaum, AP
Allman, EC
Leathers, RA
Downes, TV
AF Daniel, Brian J.
Schaum, Alan P.
Allman, Eric C.
Leathers, Robert A.
Downes, Trijntje V.
BE Shen, SS
Lewis, PE
TI Automatic ship detection from commercial multispectral satellite imagery
SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND
ULTRASPECTRAL IMAGERY XIX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Algorithms and Technologies for Multispectral,
Hyperspectral, and Ultraspectral Imagery XIX
CY APR 29-MAY 02, 2013
CL Baltimore, MD
SP SPIE
DE Automatic Ship Detection; Continuum Fusion; Maritime Domain Awareness;
Multispectral Imagery; Anomaly Detection; Target Detection
AB Commercial multispectral satellite sensors spend much of their time over the oceans. NRL has demonstrated an automatic processing system for finding ships at sea using commercially available multispectral data. To distinguish ships from whitecaps and clouds, a water/cloud clutter subspace is estimated and a continuum fusion derived anomaly detection algorithm is applied. This provides a maritime awareness capability with an acceptable detection rate while maintaining a low rate of false alarms. The system also provides a confidence metric, which can be used to further limit the false alarm rate.
C1 [Daniel, Brian J.; Schaum, Alan P.; Allman, Eric C.; Leathers, Robert A.; Downes, Trijntje V.] US Naval Res Lab, Washington, DC 20375 USA.
RP Daniel, BJ (reprint author), US Naval Res Lab, 4555 Overlook Ave, Washington, DC 20375 USA.
NR 8
TC 1
Z9 1
U1 2
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9534-1
J9 PROC SPIE
PY 2013
VL 8743
AR 874312
DI 10.1117/12.2017762
PG 8
WC Optics; Spectroscopy
SC Optics; Spectroscopy
GA BHH00
UT WOS:000325394800033
ER
PT S
AU Giannandrea, A
Raqueno, N
Messinger, DW
Faulring, J
Kerekes, JP
van Aardt, J
Canham, K
Hagstrom, S
Ontiveros, E
Gerace, A
Kaufman, J
Vongsy, KM
Griffith, H
Bartlett, BD
Ientilucci, E
Meola, J
Scarff, L
Daniel, B
AF Giannandrea, AnneMarie
Raqueno, Nina
Messinger, David W.
Faulring, Jason
Kerekes, John P.
van Aardt, Jan
Canham, Kelly
Hagstrom, Shea
Ontiveros, Erin
Gerace, Aaron
Kaufman, Jason
Vongsy, Karmon M.
Griffith, Heather
Bartlett, Brent D.
Ientilucci, Emmett
Meola, Joesph
Scarff, Lauwrence
Daniel, Brian
BE Shen, SS
Lewis, PE
TI The SHARE 2012 Data Campaign
SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND
ULTRASPECTRAL IMAGERY XIX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Algorithms and Technologies for Multispectral,
Hyperspectral, and Ultraspectral Imagery XIX
CY APR 29-MAY 02, 2013
CL Baltimore, MD
SP SPIE
DE Data Collection; Hyperspectral; Ground Truth; HSI Dataset; HSI
Signatures; LiDAR; Target Detection
ID HYPERSPECTRAL COLLECTION EXPERIMENT; MEGACOLLECT 2004; ROCHESTER
AB A multi-modal (hyperspectral, multispectral, and LIDAR) imaging data collection campaign was conducted just south of Rochester New York in Avon, NY on September 20, 2012 by the Rochester Institute of Technology (RIT) in conjunction with SpecTIR, LLC, the Air Force Research Lab (AFRL), the Naval Research Lab (NRL), United Technologies Aerospace Systems (UTAS) and MITRE. The campaign was a follow on from the SpecTIR Hyperspectral Airborne Rochester Experiment (SHARE) from 2010. Data was collected in support of the eleven simultaneous experiments described here. The airborne imagery was collected over four different sites with hyperspectral, multispectral, and LIDAR sensors. The sites for data collection included Avon, NY, Conesus Lake, Hemlock Lake and forest, and a nearby quarry. Experiments included topics such as target unmixing, subpixel detection, material identification, impacts of illumination on materials, forest health, and in-water target detection. An extensive ground truthing effort was conducted in addition to collection of the airborne imagery. The ultimate goal of the data collection campaign is to provide the remote sensing community with a shareable resource to support future research. This paper details the experiments conducted and the data that was collected during this campaign.
C1 [Giannandrea, AnneMarie; Raqueno, Nina; Messinger, David W.; Faulring, Jason; Kerekes, John P.; van Aardt, Jan; Canham, Kelly; Hagstrom, Shea; Ontiveros, Erin; Gerace, Aaron; Ientilucci, Emmett] Rochester Inst Technol, 1 Lomb Mem Dr, Rochester, NY 14623 USA.
[Kaufman, Jason; Vongsy, Karmon M.; Meola, Joesph] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA.
[Griffith, Heather] United Technol Aerosp Syst, Westford, MA 01886 USA.
[Bartlett, Brent D.] Mitre Corp, 7525 Colshire Dr, Mclean, VA 22102 USA.
[Daniel, Brian] US Naval Acad, Res Lab, Washington, DC 20375 USA.
RP Giannandrea, A (reprint author), Rochester Inst Technol, 1 Lomb Mem Dr, Rochester, NY 14623 USA.
EM amg4587@rit.edu; nina@cis.rit.edu
FU Digital Imaging and Remote Sensing Laboratory (DIRS), Exelis; United
Technologies Aerospace Systems (UTAS); NRL; UTAS; AFRL; MITRE; RITRE;
SUNY
FX Funding for this project was provided by the Digital Imaging and Remote
Sensing Laboratory (DIRS), Exelis, and United Technologies Aerospace
Systems (UTAS). The authors would like to thank Exelis, NRL, UTAS, AFRL,
MITRE, and RITRE for their involvement in this project. They would also
like to thank SUNY Brockport for the use of their meteorological
equipment.
NR 14
TC 8
Z9 8
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9534-1
J9 PROC SPIE
PY 2013
VL 8743
AR UNSP 87430F
DI 10.1117/12.2015935
PG 15
WC Optics; Spectroscopy
SC Optics; Spectroscopy
GA BHH00
UT WOS:000325394800011
ER
PT S
AU Kruse, FA
Fairbarn, KG
AF Kruse, F. A.
Fairbarn, K. G.
BE Shen, SS
Lewis, PE
TI Spectral variability constraints on multispectral and hyperspectral
mapping performance
SO ALGORITHMS AND TECHNOLOGIES FOR MULTISPECTRAL, HYPERSPECTRAL, AND
ULTRASPECTRAL IMAGERY XIX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Algorithms and Technologies for Multispectral,
Hyperspectral, and Ultraspectral Imagery XIX
CY APR 29-MAY 02, 2013
CL Baltimore, MD
SP SPIE
DE Spectral Variability; hyperspectral; HSI; multispectral; spatial
resolution; spectral resolution
ID SPECTROMETRY; ALGORITHM
AB Common approaches to multispectral imagery (MSI) and hyperspectral imagery (HSI) data analysis often utilize key image endmember spectra as proxies for ground measurements to classify imagery based on their spectral signatures. Most of these, however, take an average spectral signature approach and do not consider spectral variability. Multiple spectral measurements, whether from imagery data or utilizing a field spectrometer, demonstrate high variability linked not only to inherent material variability, but to acquisition parameters such as spatial and spectral resolution, and spectral mixing. This research explores causes and characteristics of spectral variability in remotely sensed data and its effect on spectral classification and mapping. WorldView-2 multispectral imagery and Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) hyperspectral (HSI) data at similar spatial resolutions were corrected to reflectance using a model-based approach supplemented by field spectral measurements. A second AVIRIS dataset at lower spatial resolution was also used. These data were then analyzed using ground and image spectral endmember spectra. Endmember spectra were assessed in terms of their spectral variability, and statistical and spectral-feature-based classification approaches were tested and compared. Results illustrate that improved mapping can be achieved when spectral variability of individual endmembers is taken into account in the classification.
C1 [Kruse, F. A.] Naval Postgrad Sch, Phys Dept, Monterey, CA 93943 USA.
[Kruse, F. A.; Fairbarn, K. G.] Naval Postgrad Sch, Remote Sensing Ctr, Monterey, CA 93943 USA.
RP Kruse, FA (reprint author), Naval Postgrad Sch, Phys Dept, Monterey, CA 93943 USA.
FU Science and Technology (ST) Directorate; Department of Homeland Security
(DHS); ISR Task force; NASA/JPL
FX This research was partially supported by the Science and Technology
(S&T) Directorate, Department of Homeland Security (DHS). Additional
support was provided by the ISR Task force. AVIRIS data were acquired by
NASA/JPL.WV-2 data were provided by the National Geospatial Intelligence
Agency (NGA) under the NextView imagery license agreement.
NR 22
TC 0
Z9 0
U1 0
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9534-1
J9 PROC SPIE
PY 2013
VL 8743
AR 87431O
DI 10.1117/12.2015840
PG 14
WC Optics; Spectroscopy
SC Optics; Spectroscopy
GA BHH00
UT WOS:000325394800053
ER
EF