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Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

TIME DOMAIN REFLECTOMETRY MEASUREMENT AND HIGHLY PLASTIC CLAYS  

E-Print Network [OSTI]

1 TIME DOMAIN REFLECTOMETRY MEASUREMENT AND HIGHLY PLASTIC CLAYS By: J. A. Kuhn1 and J. G. Zornberg for use in highly plastic clay. The clay used for experimentation was taken locally from the Eagle Ford Ford Clay is determined. INTRODUCTION The progression of wetting and drying fronts in highly plastic

Zornberg, Jorge G.

2

Soil Water Retention Measurements Using a Combined Tensiometer-Coiled Time Domain Reflectometry Probe  

E-Print Network [OSTI]

Soil Water Retention Measurements Using a Combined Tensiometer-Coiled Time Domain Reflectometry al., 1975; Arya et al.,that can be used to determine soil water retention curves in both 1975; Royer of a standard tensiometer. The combined tensiometer-coiled TDR probe was con- of soil water retention curves

Wildenschild, Dorthe

3

Method and apparatus for monitoring the integrity of a geomembrane liner using time domain reflectometry  

DOE Patents [OSTI]

Leaks are detected in a multi-layered geomembrane liner by a two-dimensional time domain reflectometry (TDR) technique. The TDR geomembrane liner is constructed with an electrically conductive detection layer positioned between two electrically non-conductive dielectric layers, which are each positioned between the detection layer and an electrically conductive reference layer. The integrity of the TDR geomembrane liner is determined by generating electrical pulses within the detection layer and measuring the time delay for any reflected electrical energy caused by absorption of moisture by a dielectric layer.

Morrison, John L. (Idaho Falls, ID)

2001-04-24T23:59:59.000Z

4

Time-Domain Reflectometry for Tamper Indication in Unattended Monitoring Systems for Safeguards  

SciTech Connect (OSTI)

The International Atomic Energy Agency (IAEA) continues to expand its use of unattended, remotely monitored measurement systems. An increasing number of systems and an expanding family of instruments create challenges in terms of deployment efficiency and the implementation of data authentication measures. Pacific Northwest National Laboratory (PNNL) leads a collaboration that is exploring various tamper-indicating (TI) measures that could help to address some of the long-standing detector and data-transmission authentication challenges with IAEA’s unattended systems. PNNL is investigating the viability of active time-domain reflectometry (TDR) along two parallel but interconnected paths: (1) swept-frequency TDR as the highly flexible, laboratory gold standard to which field-deployable options can be compared, and (2) a low-cost commercially available spread-spectrum TDR technology as one option for field implementation. This report describes PNNL’s progress and preliminary findings from the first year of the study, and describes the path forward.

Tedeschi, Jonathan R.; Smith, Leon E.; Moore, David E.; Sheen, David M.; Conrad, Ryan C.

2014-12-17T23:59:59.000Z

5

Dental optical coherence domain reflectometry explorer  

DOE Patents [OSTI]

A hand-held, fiber optic based dental device with optical coherence domain reflectometry (OCDR) sensing capabilities provides a profile of optical scattering as a function of depth in the tissue at the point where the tip of the dental explorer touches the tissue. This system provides information on the internal structure of the dental tissue, which is then used to detect caries and periodontal disease. A series of profiles of optical scattering or tissue microstructure are generated by moving the explorer across the tooth or other tissue. The profiles are combined to form a cross-sectional, or optical coherence tomography (OCT), image.

Everett, Matthew J. (Livermore, CA); Colston, Jr., Billy W. (Livermore, CA); Sathyam, Ujwal S. (Livermore, CA); Da Silva, Luiz B. (Pleasanton, CA)

2001-01-01T23:59:59.000Z

6

Optical coherence domain reflectometry guidewire  

DOE Patents [OSTI]

A guidewire with optical sensing capabilities is based on a multiplexed optical coherence domain reflectometer (OCDR), which allows it to sense location, thickness, and structure of the arterial walls or other intra-cavity regions as it travels through the body during minimally invasive medical procedures. This information will be used both to direct the guidewire through the body by detecting vascular junctions and to evaluate the nearby tissue. The guidewire contains multiple optical fibers which couple light from the proximal to distal end. Light from the fibers at the distal end of the guidewire is directed onto interior cavity walls via small diameter optics such as gradient index lenses and mirrored corner cubes. Both forward viewing and side viewing fibers can be included. The light reflected or scattered from the cavity walls is then collected by the fibers, which are multiplexed at the proximal end to the sample arm of an optical low coherence reflectometer. The guidewire can also be used in nonmedical applications.

Colston, Billy W. (Livermore, CA); Everett, Matthew (Pleasanton, CA); Da Silva, Luiz B. (Danville, CA); Matthews, Dennis (Moss Beach, CA)

2001-01-01T23:59:59.000Z

7

Catheter guided by optical coherence domain reflectometry  

DOE Patents [OSTI]

A guidance and viewing system based on multiplexed optical coherence domain reflectometry is incorporated into a catheter, endoscope, or other medical device to measure the location, thickness, and structure of the arterial walls or other intra-cavity regions at discrete points on the medical device during minimally invasive medical procedures. The information will be used both to guide the device through the body and to evaluate the tissue through which the device is being passed. Multiple optical fibers are situated along the circumference of the device. Light from the distal end of each fiber is directed onto the interior cavity walls via small diameter optics (such as gradient index lenses and mirrored corner cubes). Both forward viewing and side viewing fibers can be included. The light reflected or scattered from the cavity walls is then collected by the fibers and multiplexed at the proximal end to the sample arm of an optical low coherence reflectometer. The system may also be implemented in a nonmedical inspection device.

Everett, Matthew (Pleasanton, CA); Colston, Billy W. (Livermore, CA); Da Silva, Luiz B. (Danville, CA); Matthews, Dennis (Moss Beach, CA)

2002-01-01T23:59:59.000Z

8

An evaluation of hydrologic, geotechnical, and chemical behavior of processed oil shale solid waste 2; The use of time domain reflectometry (TDR) for monitoring in-situ volumetric water content in processed oil shale  

SciTech Connect (OSTI)

This paper describes the use of time domain reflectometry (TDR) for monitoring volumetric water contents in processed oil shale solid waste. TDR measures soil water content via a correlation between the dielectric constant (K) of the 3 phase (soil-water-air) system and the volumetric water content ({theta}{sub v}). An extensive bench top research program has been conducted to evaluate and verify the use of this technique in processed oil shale solid waste. This study utilizes columns of processed oil shale packed to known densities and varying water contents and compares the columetric water content measured via TDR and the volumetric water content measured through gravimetric determination.

Reeves, T.L.; Elgezawi, S.M. (Wyoming Univ., Laramie, WY (USA). Dept. of Civil Engineering); Kaser, T.G. (GIGO Computer and Electronic, Laramie, WY (US))

1989-01-01T23:59:59.000Z

9

Signal statistics of phase dependent optical time domain reflectometry  

E-Print Network [OSTI]

, is derived. This noise considers the parameters of a photodetector, giving a model for the noise in the measurable photocurrent. Two models are used to describe the fading probability of the signal. The first model, based on the Fabry-Perot interferometer...

Wojcik, Aleksander Karol

2007-04-25T23:59:59.000Z

10

Frequency Domain vs. Time Domain VTLN David Sundermann, Antonio Bonafonte  

E-Print Network [OSTI]

,antonio}@gps.tsc.upc.es Harald H¨oge Siemens AG Corporate Technology 81739 Munich, Germany harald.hoege@siemens.com Hermann Ney to a certain individual) but the other direc- tion (transforming a standard speaker to sev- eral well and Stella, 1986). The application of FD-VTLN to speech synthe- sis requires the transformation from time

Suendermann, David

11

Time-Domain Electromagnetics At Neal Hot Springs Geothermal Area...  

Open Energy Info (EERE)

Activity: Time-Domain Electromagnetics At Neal Hot Springs Geothermal Area (Colorado School of Mines and Imperial College London, 2011) Exploration Activity Details Location Neal...

12

A time and frequency domain analysis of contrarian trading strategies/  

E-Print Network [OSTI]

This thesis applies time and frequency domain analyses to a high-frequency market making strategy to study the profitability of liquidity provision over multiple time horizons from 1964 to 2013. Using daily returns and ...

Chaudhuri, Shomesh E

2014-01-01T23:59:59.000Z

13

NExpTime-complete Description Logics with Concrete Domains  

E-Print Network [OSTI]

NExpTime-complete Description Logics with Concrete Domains Carsten Lutz LuFG Theoretical Computer Science RWTH Aachen, Germany lutz@cs.rwth-aachen.de Abstract. Concrete domains are an extension \\concrete properties" of objects such as sizes, weights, and durations. It is known that reasoning with ALC

Baader, Franz

14

NExpTime-complete Description Logics with Concrete Domains  

E-Print Network [OSTI]

that reasoning with the concrete do- main D (i.e., testing the satis#12;ability of #12;nite conjunctionsChapter 1 NExpTime-complete Description Logics with Concrete Domains Carsten Lutz Abstract. Description Logics (DLs) incorporating concrete domains are useful formalisms for integrated reasoning about

Baader, Franz

15

Neutron Reflectometry Studies of the Adsorbed Structure of the...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Reflectometry Studies of the Adsorbed Structure of the Amelogenin, LRAP. Neutron Reflectometry Studies of the Adsorbed Structure of the Amelogenin, LRAP. Abstract: Amelogenins make...

16

REAL TIME MONITORING OF INFRASTRUCTURE USING TDR TECHNOLOGY : PRINCIPLES  

E-Print Network [OSTI]

applications of Time Domain Reflectometry (TDR). TDR is basically radar in which a voltage pulse is launched-water interface. This strong reflection makes it possible to monitor changes in water level. In another variation, parallel rods can be embedded in soil and TDR is used to measure travel time of pulses reflected from

17

Time-domain Dynamics and Stability Analysis of Optoelectronic Oscillators  

E-Print Network [OSTI]

Time-domain Dynamics and Stability Analysis of Optoelectronic Oscillators based on Whispering and Yanne K. Chembo Optoelectronic oscillators (OEOs) are microwave photonics systems in- tended to generate in "" #12;1 Introduction The optoelectronic oscillator (OEO) is nowadays considered as one of the most

Paris-Sud XI, Université de

18

Time Domain Partitioning of Electricity Production Cost Simulations  

SciTech Connect (OSTI)

Production cost models are often used for planning by simulating power system operations over long time horizons. The simulation of a day-ahead energy market can take several weeks to compute. Tractability improvements are often made through model simplifications, such as: reductions in transmission modeling detail, relaxation of commitment variable integrality, reductions in cost modeling detail, etc. One common simplification is to partition the simulation horizon so that weekly or monthly horizons can be simulated in parallel. However, horizon partitions are often executed with overlap periods of arbitrary and sometimes zero length. We calculate the time domain persistence of historical unit commitment decisions to inform time domain partitioning of production cost models. The results are implemented using PLEXOS production cost modeling software in an HPC environment to improve the computation time of simulations while maintaining solution integrity.

Barrows, C.; Hummon, M.; Jones, W.; Hale, E.

2014-01-01T23:59:59.000Z

19

Time Domain Continuous Imaging TIME DOMAIN CONTINUOUS IMAGING doesn't sound like  

E-Print Network [OSTI]

the scene with skewed timing and exposure settings. Our 3D-printed array camera at SC14 coordinates four

Dietz, Henry G. "Hank"

20

Comprehensive Joint Time-Frequency Analysis toward Condition Based Maintenance Regimes for Electrical and  

E-Print Network [OSTI]

measure is proposed for comparing vibration data from multiple sensors toward the creation of new and classification technique is proposed using mutual information measures in the time-frequency domain. The time bounding regions. Electrical, reflectometry-based methods of health evaluation are proposed

Almor, Amit

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Time-domain simulation of the full hydrodynamic model  

E-Print Network [OSTI]

A simple upwind discretization of the highly coupled non-linear differential equations which define the hydrodynamic model for semiconductors is given in full detail. The hydrodynamic model is able to describe inertia effects which play an increasing role in different fields of opto- and microelectronics. A silicon $n^+ - n - n^+$ - structure is simulated, using the energy-balance model and the full hydrodynamic model. Results for stationary cases are then compared, and it is pointed out where the energy-balance model, which is implemented in most of today's commercial semiconductor device simulators, fails to describe accurately the electron dynamics. Additionally, a GaAs $n^+ - n - n^+$-structure is simulated in time-domain in order to illustrate the importance of inertia effects at high frequencies in modern submicron devices.

Aste, A

2003-01-01T23:59:59.000Z

22

Detecting Rare Events in the Time-Domain  

SciTech Connect (OSTI)

One of the biggest challenges in current and future time-domain surveys is to extract the objects of interest from the immense data stream. There are two aspects to achieving this goal: detecting variable sources and classifying them. Difference imaging provides an elegant technique for identifying new transients or changes in source brightness. Much progress has been made in recent years toward refining the process. We discuss a selection of pitfalls that can afflict an automated difference imagine pipeline and describe some solutions. After identifying true astrophysical variables, we are faced with the challenge of classifying them. For rare events, such as supernovae and microlensing, this challenge is magnified because we must balance having selection criteria that select for the largest number of objects of interest against a high contamination rate. We discuss considerations and techniques for developing classification schemes.

Rest, A; Garg, A

2008-10-31T23:59:59.000Z

23

Three-dimensional finite difference time domain modeling of the Earth-ionosphere cavity resonances  

E-Print Network [OSTI]

domain (FDTD) model of Schumann resonances (SR) with a set of classical eigenfrequency and quality factorThree-dimensional finite difference time domain modeling of the Earth-ionosphere cavity resonances-dimensional finite difference time domain modeling of the Earth-ionosphere cavity resonances, Geophys. Res. Lett., 32

Pasko, Victor

24

Nordisk kernesikkerhedsforskning Norrnar kjarnryggisrannsknir  

E-Print Network [OSTI]

, transmission lines, hot spot detection, fault detection, frequency domain reflectometry, time domain, cable aging, transmission lines, hot spot detection, fault detection, frequency domain reflectometry

25

Holographic imaging based on time-domain data of natural-fiber-containing materials  

DOE Patents [OSTI]

Methods and apparatuses for imaging material properties in natural-fiber-containing materials can utilize time-domain data. In particular, images can be constructed that provide quantified measures of localized moisture content. For example, one or more antennas and at least one transceiver can be configured to collect time-domain data from radiation interacting with the natural-fiber-containing materials. The antennas and the transceivers are configured to transmit and receive electromagnetic radiation at one or more frequencies, which are between 50 MHz and 1 THz, according to a time-domain impulse function. A computing device is configured to transform the time-domain data to frequency-domain data, to apply a synthetic imaging algorithm for constructing a three-dimensional image of the natural-fiber-containing materials, and to provide a quantified measure of localized moisture content based on a pre-determined correlation of moisture content to frequency-domain data.

Bunch, Kyle J.; McMakin, Douglas L.

2012-09-04T23:59:59.000Z

26

Calculation of HVDC-converter harmonics in frequency domain with regard to asymmetries and comparison with time domain simulations  

SciTech Connect (OSTI)

In order to study the effects of large HVDC converters to the feeding ac networks, it is of importance to explain and to calculate harmonic phenomena which are a result of converter operation. During commissioning of real HVDC converters it could be seen, that harmonics resulting from unsymmetries in the system voltages or from unsymmetries in converter operation led to significant difficulties concerning the system design. For this reason, not only the effects of characteristic but also the effects of noncharacteristic converter harmonics must be taken into account. The aim is to describe the steady state harmonic behavior of the converter. The harmonic spectra are not determined by time domain analysis but instead the solution is found by frequency domain calculations. This can result in reduced calculation time in comparison to conventional fourier analysis of the time functions. The converter is interpreted as an amplitude modulator with voltage and current converter functions which describe the coupling of the dc circuit and the ac network through the converter. To verify the theory, comparison of frequency domain with time domain calculations were carried out.

Rittiger, J. [Siemens AG, Erlangen (Germany)] [Siemens AG, Erlangen (Germany); Kulicke, B. [Technische Univ. Berlin (Germany)] [Technische Univ. Berlin (Germany)

1995-10-01T23:59:59.000Z

27

POLARIZATION DEPENDENT TERAHERTZ TIME-DOMAIN SPECTROSCOPY MEASUREMENTS ON ALIGNED CARBON NANOTUBE FILMS AND FIBERS  

E-Print Network [OSTI]

Dependent Terahertz Time-Domain Spectroscopy Measurements On Aligned Carbon Nanotube Films And Fibers are not well defined ! Carbon nanotube (CNT) fiber properties strongly determined by overall alignment of itsPOLARIZATION DEPENDENT TERAHERTZ TIME-DOMAIN SPECTROSCOPY MEASUREMENTS ON ALIGNED CARBON NANOTUBE

Mellor-Crummey, John

28

Reconstruction of nonstationary sound fields based on time domain plane wave superposition method  

E-Print Network [OSTI]

Reconstruction of nonstationary sound fields based on time domain plane wave superposition method X.-Z. Zhanga , J.-H. Thomasb , C.-X. Bia and J.-C. Pascalb a Institute of Sound and Vibration Research, Hefei of the Acoustics 2012 Nantes Conference 23-27 April 2012, Nantes, France 1811 #12;A time-domain plane wave

Boyer, Edmond

29

An Energy Efficient Asynchronous Time-Domain Comparator  

E-Print Network [OSTI]

Approved by: Chair of Committee, Edgar Sanchez-Sinencio Committee Members, Sergiy Butenko Kamran Entesari Mi Lu Head of Department, Chanan Singh May 2013 Major Subject: Electrical Engineering Copyright 2013Yang Gao ii ABSTRACT...-domain comparators. iii DEDICATION To my parents and my beloved wife Qi iv ACKNOWLEDGEMENTS First, I would like to express my sincere thanks to my advisor, Dr. Edgar Sanchez-Sinencio for guidance, support and encouragement throughout my...

Gao, Yang

2013-04-26T23:59:59.000Z

30

Single-channel speech enhancement using spectral subtraction in the short-time modulation domain  

E-Print Network [OSTI]

Single-channel speech enhancement using spectral subtraction in the short-time modulation domain as an alternative to the acoustic domain for speech enhancement. More specif- ically, we wish to determine how. In this study, the effect of modulation frame duration on speech quality of the proposed enhancement method

31

E-Print Network 3.0 - acquisition time domain Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

acquisition time domain Page: << < 1 2 3 4 5 > >> 1 Data Acquisition Interpretation Summary: .0 kW IP Transmitter Walcer MG-12 Motor Generator Two IRIS Instruments ELREC Pro...

32

Time Evolution of Temperature and Entropy of Various Collapsing Domain Walls  

E-Print Network [OSTI]

We investigate the time evolution of the temperature and entropy of gravitationally collapsing domain walls as seen by an asymptotic observer. In particular, we seek to understand how topology and the addition of a cosmological constant affect the gravitational collapse. Previous work has shown that the entropy of a spherically symmetric collapsing domain approaches a constant. In this paper, we reproduce these results, using both a fully quantum and a semi-classical approach, then we repeat the process for a de Sitter Schwarzschild domain wall (spherical with cosmological constant) and a (3+1) BTZ domain wall (cylindrical). We do this by coupling a scalar field to the background of the domain wall and analyzing the spectrum of radiation as a function of time. We find that the spectrum is quasi-thermal, with the degree of thermality increasing as the domain wall approaches the horizon. The thermal distribution allows for the determination of the temperature as a function of time, and we find that the late time temperature is very close to the Hawking temperature and that it also exhibits the proper scaling with the mass. From the temperature we find the entropy. Since the collapsing domain wall is what forms a black hole, we can compare the results to those of the standard entropy-area relation. We find that the entropy does in fact approach a constant that is close to the Hawking entropy. However, both the de Sitter Schwarzschild domain wall and the (3+1) BTZ domain wall show periods of decreasing entropy, which suggests that spontaneous collapse may be prevented.

Evan Halstead

2012-09-10T23:59:59.000Z

33

Fourier information optics for the ultrafast time domain Andrew M. Weiner  

E-Print Network [OSTI]

of ultrafast pulses. These examples exploit time­ frequency Fourier techniques to perform matched filtering processing of ultrafast pulsed signals, in close analogy with the spatial Fourier techniques used by LeithFourier information optics for the ultrafast time domain Andrew M. Weiner School of Electrical

Purdue University

34

High-stability time-domain balanced homodyne detector for ultrafast optical pulse applications  

E-Print Network [OSTI]

Low-noise, efficient, phase-sensitive time-domain optical detection is essential for foundational tests of quantum physics based on optical quantum states and the realization of numerous applications ranging from quantum key distribution to coherent classical telecommunications. Stability, bandwidth, efficiency, and signal-to-noise ratio are crucial performance parameters for effective detector operation. Here we present a high-bandwidth, low-noise, ultra-stable time-domain coherent measurement scheme based on balanced homodyne detection ideally suited to characterization of quantum and classical light fields in well-defined ultrashort optical pulse modes.

Merlin Cooper; Christoph Söller; Brian J. Smith

2013-03-25T23:59:59.000Z

35

-transform MATLAB Laboratory Experiment Purpose: This experiment presents the frequency domain analysis of discrete-time  

E-Print Network [OSTI]

5.6 -transform MATLAB Laboratory Experiment Purpose: This experiment presents the frequency domain analysis of discrete-time systems using MATLAB. The impulse, step, sinusoidal, and exponential on the ¡ -transform. In addition, MATLAB will be used to perform the partial fraction expansion and to find

Gajic, Zoran

36

Time-domain Fatigue Response and Reliability Analysis of Offshore Wind Turbines with  

E-Print Network [OSTI]

Time-domain Fatigue Response and Reliability Analysis of Offshore Wind Turbines with Emphasis of offshore wind turbines Defense: 09.12.2012 2012 - : Structural Engineer in Det Norske Veritas (DNV) 2007 of the drive train of an on-land wind turbine under dynamic wind loads. The main tasks of this study are to

Nørvåg, Kjetil

37

Finite-difference time domain method for light scattering by small ice  

E-Print Network [OSTI]

can be employed to produce the scattering and ab- sorption characteristics of hexagonal ice particlesFinite-difference time domain method for light scattering by small ice crystals in three for the solution of light scattering by nonspherical particles has been developed for small ice crystals

Liou, K. N.

38

Harmonic Modelling of Thyristor Bridges using a Simplified Time Domain Method  

E-Print Network [OSTI]

1 Harmonic Modelling of Thyristor Bridges using a Simplified Time Domain Method P. W. Lehn, Senior form solution for the harmonic injection of the converter is developed. For the more general case model module takes as input the ac voltage harmonics at the point of common coupling and outputs

Lehn, Peter W.

39

Fast and Accurate Time-Domain Simulations with Commodity Graphics Hardware  

E-Print Network [OSTI]

Fast and Accurate Time-Domain Simulations with Commodity Graphics Hardware Gerard S. Baron*1 the efficacy of graphics hardware for the computational electrodynamics community. In particular, we illustrate developments in graphics hardware acceleration provide operations that can be applied to dramatically speed up

40

Comparing Estimates of Wind Turbine Fatigue Loads using Time-Domain and Spectral Methods  

E-Print Network [OSTI]

for edgewise blade loads. NOMENCLATURE f = frequency in Hertz m = material exponent for fatigue mn = nthComparing Estimates of Wind Turbine Fatigue Loads using Time-Domain and Spectral Methods by Patrick Ragan and Lance Manuel REPRINTED FROM WIND ENGINEERING VOLUME 31, NO. 2, 2007 MULTI-SCIENCE PUBLISHING

Manuel, Lance

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Three-dimensional finite difference time domain modeling of the Schumann resonance  

E-Print Network [OSTI]

Three-dimensional finite difference time domain modeling of the Schumann resonance parameters to as Schumann resonances and are excited by lightning discharges. The detection of such resonances on other frequency propagation is employed to study the Schumann resonance problems on Titan, Venus, and Mars

Pasko, Victor

42

A survey of reflectometry techniques with applications to TFTR  

SciTech Connect (OSTI)

This report presents a review of reflectometry with particular attention to eXtraordinary mode (X-mode) reflectometry using the novel technique of dual frequency differential phase. The advantage of using an X-mode wave is that it can probe the edge of the plasma with much higher resolution and using a much smaller frequency range than with the Ordinary mode (O-Mode). The general problem with previous full phase reflectometry techniques is that of keeping track of the phase (on the order of 1000 fringes) as the frequency is swept over the band. The dual frequency phase difference technique has the advantage that since it is keeping track of the phase difference of two frequencies with a constant frequency separation, the fringe counting is on the order of only 3 to 5 fringes. This fringe count, combined with the high resolution of the X-mode wave and the small plasma access requirements of reflectometry, make X-mode reflectometry a very attractive diagnostic for today`s experiments and future fusion devices.

Collazo, I.; Stacey, W.M. [Georgia Inst. of Tech., Atlanta, GA (United States); Wilgen, J.; Hanson, G.; Bigelow, T.; Thomas, C.E. [Oak Ridge National Lab., TN (United States); Bretz, N. [Princeton Univ., NJ (United States). Plasma Physics Lab.

1993-12-01T23:59:59.000Z

43

Time domain analysis of a gyrotron traveling wave amplifier with misaligned electron beam  

SciTech Connect (OSTI)

This article develops a time-domain theory to study the beam-wave interaction in gyrotron traveling wave amplifier (gyro-TWA) with a misaligned electron beam. The effects of beam misalignment on the TE{sub 01} mode gyro-TWA operating at the fundamental are discussed. Numerical results show that the effect of misalignment is less obvious when the input power is larger, and the influences of misalignment on the stable gain and the stable time are basically opposite.

Wang, Qiushi, E-mail: qiushiwork@gmail.com; Peng, Shuyuan [Institute of Electronics, Chinese Academy of Sciences, P.O. Box 2652, Beijing 100080 (China); University of Chinese Academy of Sciences, Beijing 100039 (China); Luo, Jirun [Institute of Electronics, Chinese Academy of Sciences, P.O. Box 2652, Beijing 100080 (China)

2014-08-15T23:59:59.000Z

44

A Real-time Visual Tracking System in the Robot Soccer Domain Bo Li, Edward Smith, Huosheng Hu, Libor Spacek  

E-Print Network [OSTI]

A Real-time Visual Tracking System in the Robot Soccer Domain Bo Li, Edward Smith, Huosheng Hu Abstract This paper presents a real-time visual tracking system in the robot soccer domain. The details of the Essex Wizards robot football team and its control system are described. A real-time visual tracking

Hu, Huosheng

45

Simulation of planar integrated photonics devices with the LLNL time- domain finite-difference code suite  

SciTech Connect (OSTI)

Interest has recently grown in applying microwave modeling techniques to optical circuit modeling. One of the simplest, yet most powerful, microwave simulation techniques is the finite-difference time-domain algorithm (FDTD). In this technique, the differential form of the time-domain Maxwell's equations are discretized and all derivatives are approximated as differences. Minor algebraic manipulations on the resulting equations produces a set of update equations that produce fields at a given time step from fields at the previous time step. The FDTD algorithm, then, is quite simple. Source fields are launched into the discrete grid by some means. The FDTD equations advance these fields in time. At the boundaries of the grid, special update equations called radiation conditions are applied that approximate a continuing, infinite space. Because virtually no assumptions are made in the development of the FDTD method, the algorithm is able to represent a wide-range of physical effects. Waves can propagate in any direction, multiple reflections within structures can cause resonances, multiple modes of various polarizations can be launched, each of which may generate within the device an infinite spectrum of bound and radiation modes. The ability to model these types of general physical effects is what makes the FDTD method interesting to the field of optics. In this paper, we discuss the application of the finite-difference time-domain technique to integrated optics. Animations will be shown of the simulations of a TE coupler, TM grating, and a TE integrated detector. 3 refs., 1 fig.

McLeod, R.; Hawkins, R.J.; Kallman, J.S.

1991-04-01T23:59:59.000Z

46

Calculation of HVDC converter noncharacteristic harmonics using digital time-domain simulation method  

SciTech Connect (OSTI)

In this paper, noncharacteristic harmonics of an HVdc converter station are calculated based on the use of digital time-domain simulation methods. An enhanced version of the Electromagnetic Transients Program (EMTP) is used for the studies. The noncharacteristic harmonics of interest are (1) the dc side triplen harmonics, and (2) the ac side second harmonic. Impacts of loading conditions, neutral filter, and converter firing angle on the dc side triplen harmonics are discussed. Effects of ac side network parameters, static VAR compensator (SVC), transformer half-cycle saturation, and Geomagnetically Induced Current (GIC) on the ac side second harmonic instability are also presented. This paper concludes that the digital time-domain simulation method provides significant flexibility for accurate prediction of (1) generation mechanism, and (2) adverse impacts of HVdc noncharacteristic harmonics.

Sarshar, A. [Trench Electric, Scarborough, Ontario (Canada)] [Trench Electric, Scarborough, Ontario (Canada); Iravani, M.R.; Li, J. [Univ. of Toronto, Ontario (Canada). Dept. of Electrical and Computer Engineering] [Univ. of Toronto, Ontario (Canada). Dept. of Electrical and Computer Engineering

1996-01-01T23:59:59.000Z

47

Time-Domain Absorbing Boundary Terminations for Waveguide Ports Based on State-Space Models  

E-Print Network [OSTI]

Absorbing boundary conditions for waveguide ports in time domain are important elements of transient approaches to treat RF structures. A successful way to implement these termination conditions is the decomposition of the transient fields in the absorbing plane in terms of modal field patterns. The absorbing condition is then accomplished by transferring the wave impedances (or admittances) of the modes to time domain, which leads to convolution operations involving Bessel functions and integrals of Bessel functions. This paper presents a new alternative approach: the convolution operations are approximated by appropriate state-space models whose system responses can be conveniently computed by standard integration schemes. These schemes are indispensable for transient simulations anyhow. Sufficiently far away from the cutoff frequency, a wideband match is achieved.

Flisgen, T; van Rienen, U

2014-01-01T23:59:59.000Z

48

Terahertz Time-Domain Spectroscopy Study of Silica Aerogels and Adsorbed Molecular Jiangquan Zhang and D. Grischkowsky*  

E-Print Network [OSTI]

Terahertz Time-Domain Spectroscopy Study of Silica Aerogels and Adsorbed Molecular Vapors Jiangquan time-domain spectroscopy (THz-TDS) study of hydrophobic and hydrophilic silica aerogels, and the adsorption of several molecular vapors in the hydrophilic silica aerogel. The hydrophobic and hydrophilic

49

High-Frequency (140-GHz) Time Domain EPR and ENDOR Spectroscopy: The Tyrosyl Radical-Diiron Cofactor in  

E-Print Network [OSTI]

High-Frequency (140-GHz) Time Domain EPR and ENDOR Spectroscopy: The Tyrosyl Radical EPR and ENDOR have been employed to characterize the tyrosyl radical (Y·)-diiron cofactor in the Y2 of 140-GHz time domain EPR and ENDOR to examine this system and demonstrates the capabilities

Griffin, Robert G.

50

Time-domain Simulation of Multibody Floating Systems based on State-space Modeling Technology  

E-Print Network [OSTI]

of ship-to-ship cargo transfer using the spar.................... 13 1.4 Flowchart for the time-domain multibody simulation tool ........................ 16 2.1 A block diagram of a PID controller... method with a semi-closed analytical method of multiple scattering developed for an array composed of vertical cylindrical structures. This analytical method had a limitation owing to the geometry of many offshore structures including, e.g., the Mobile...

Yu, Xiaochuan

2012-10-19T23:59:59.000Z

51

A portable time-domain LED fluorimeter for nanosecond fluorescence lifetime measurements  

SciTech Connect (OSTI)

Fluorescence lifetime measurements are becoming increasingly important in chemical and biological research. Time-domain lifetime measurements offer fluorescence multiplexing and improved handling of interferers compared with the frequency-domain technique. In this paper, an all solid-state, filterless, and highly portable light-emitting-diode based time-domain fluorimeter (LED TDF) is reported for the measurement of nanosecond fluorescence lifetimes. LED based excitation provides more wavelengths options compared to laser diode based excitation, but the excitation is less effective due to the uncollimated beam, less optical power, and longer latency in state transition. Pulse triggering and pre-bias techniques were implemented in our LED TDF to improve the peak optical power to over 100 mW. The proposed pulsing circuit achieved an excitation light fall time of less than 2 ns. Electrical resetting technique realized a time-gated photo-detector to remove the interference of the excitation light with fluorescence. These techniques allow the LED fluorimeter to accurately measure the fluorescence lifetime of fluorescein down to concentration of 0.5 ?M. In addition, all filters required in traditional instruments are eliminated for the non-attenuated excitation/emission light power. These achievements make the reported device attractive to biochemical laboratories seeking for highly portable lifetime detection devices for developing sensors based on fluorescence lifetime changes. The device was initially validated by measuring the lifetimes of three commercial fluorophores and comparing them with reported lifetime data. It was subsequently used to characterize a ZnSe quantum dot based DNA sensor.

Wang, Hongtao; Salthouse, Christopher D., E-mail: salthouse@ecs.umass.edu [Electrical and Computer Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003 (United States); Center for Personalized Health Monitoring, University of Massachusetts, Amherst, Massachusetts 01003 (United States); Qi, Ying; Mountziaris, T. J. [Center for Personalized Health Monitoring, University of Massachusetts, Amherst, Massachusetts 01003 (United States) [Center for Personalized Health Monitoring, University of Massachusetts, Amherst, Massachusetts 01003 (United States); Chemical Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003 (United States)

2014-05-15T23:59:59.000Z

52

Radio-frequency reflectometry on an undoped AlGaAs/GaAs single electron transistor  

SciTech Connect (OSTI)

Radio frequency reflectometry is demonstrated in a sub-micron undoped AlGaAs/GaAs device. Undoped single electron transistors (SETs) are attractive candidates to study single electron phenomena, due to their charge stability and robust electronic properties after thermal cycling. However, these devices require a large top-gate, which is unsuitable for the fast and sensitive radio frequency reflectometry technique. Here, we demonstrate that rf reflectometry is possible in an undoped SET.

MacLeod, S. J.; See, A. M.; Keane, Z. K.; Scriven, P.; Micolich, A. P.; Hamilton, A. R., E-mail: Alex.Hamilton@unsw.edu.au [School of Physics, University of New South Wales, Sydney, New South Wales 2052 (Australia); Aagesen, M.; Lindelof, P. E. [Nanoscience Center, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen (Denmark)] [Nanoscience Center, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen (Denmark)

2014-01-06T23:59:59.000Z

53

E-Print Network 3.0 - amplitude modulated reflectometry Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Plesner - ABB Corporate Research Collection: Engineering ; Plasma Physics and Fusion 2 Status of reflectometry and phase-contrast imaging on Alcator C-Mod Summary: . Sideband...

54

Transient analysis of printed lines using finite-difference time-domain method  

SciTech Connect (OSTI)

Comprehensive studies of ultra-wideband pulses and electromagnetic coupling on printed coupled lines have been performed using full-wave 3D finite-difference time-domain analysis. Effects of unequal phase velocities of coupled modes, coupling between line traces, and the frequency dispersion on the waveform fidelity and crosstalk have been investigated in detail. To discriminate the contributions of different mechanisms into pulse evolution, single and coupled microstrip lines without (?r?=?1) and with (?r?>?1) dielectric substrates have been examined. To consistently compare the performance of the coupled lines with substrates of different permittivities and transients of different characteristic times, a generic metric similar to the electrical wavelength has been introduced. The features of pulse propagation on coupled lines with layered and pedestal substrates and on the irregular traces have been explored. Physical interpretations of the simulation results are discussed in the paper.

Ahmed, Shahid [JLAB

2013-01-01T23:59:59.000Z

55

Time-domain sampling of x-ray pulses using an ultrafast sample response  

SciTech Connect (OSTI)

We employ the ultrafast response of a 15.4 nm thin SrRuO{sub 3} layer grown epitaxially on a SrTiO{sub 3} substrate to perform time-domain sampling of an x-ray pulse emitted from a synchrotron storage ring. Excitation of the sample with an ultrashort laser pulse triggers coherent expansion and compression waves in the thin layer, which turn the diffraction efficiency on and off at a fixed Bragg angle during 5 ps. This is significantly shorter than the duration of the synchrotron x-ray pulse of 100 ps. Cross-correlation measurements of the ultrafast sample response and the synchrotron x-ray pulse allow to reconstruct the x-ray pulse shape.

Gaal, P.; Shayduk, R. [Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Wilhelm-Conrad-Roentgen Campus, BESSY II, Albert-Einstein-Str. 15, 12489 Berlin (Germany); Schick, D.; Herzog, M.; Bojahr, A.; Goldshteyn, J.; Navirian, H. A.; Leitenberger, W. [Institut fuer Physik und Astronomie, Universitaet Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam (Germany); Vrejoiu, I. [Max-Planck-Institut fuer Mikrostrukturphysik, Weinberg 2, 06120 Halle (Germany); Khakhulin, D.; Wulff, M. [European Synchrotron Radiation Facility (ESRF), 6 rue Jules Horowitz, 38000 Grenoble (France); Bargheer, M. [Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Wilhelm-Conrad-Roentgen Campus, BESSY II, Albert-Einstein-Str. 15, 12489 Berlin (Germany); Institut fuer Physik und Astronomie, Universitaet Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam (Germany)

2012-12-10T23:59:59.000Z

56

Time-domain squeezing and quantum distributions in the pulsed regime  

SciTech Connect (OSTI)

We investigate time-dependent properties of Einstein-Podolsky-Rosen (EPR) light beams generated in a nondegenerate optical parametric oscillator (NOPO) driven by a sequence of laser pulses with Gaussian time-dependent envelopes. This investigation continues our previous analysis [H. H. Adamyan and G. Yu. Kryuchkyan, Phys. Rev. A 74, 023810 (2006)] and involves problems of two-mode quadrature squeezing as well as intensity-difference squeezing in the time domain. The peculiarities of EPR beams are also discussed in the framework of phase-space quantum distributions. Two kinds of non-Gaussian Wigner functions, for the reduced one-mode state of periodically pulsed NOPO and for EPR beams which are combined on a one-half beam splitter are calculated numerically. We also investigate the Wigner functions of intensity-correlated twin beams following the conditional photon state-preparation scheme. It is demonstrated that the Wigner functions involve negative values in parts of the phase space for the schemes with one, two, and three photons.

Adamyan, N. H. [Yerevan State University, 1 A Manoogian, 375049 Yerevan (Armenia); Adamyan, H. H. [Institute for Physical Research, National Academy of Sciences, Ashtarak-2, 378410 (Armenia); Kryuchkyan, G. Yu. [Yerevan State University, 1 A Manoogian, 375049 Yerevan (Armenia); Institute for Physical Research, National Academy of Sciences, Ashtarak-2, 378410 (Armenia)

2008-02-15T23:59:59.000Z

57

An Approach to Generating Summaries of Time Series Data in the Gas Turbine Domain Jin Yu and Jim Hunter and Ehud Reiter and Somayajulu Sripada  

E-Print Network [OSTI]

An Approach to Generating Summaries of Time Series Data in the Gas Turbine Domain Jin Yu and Jim an approach to generating summaries of time series data in the gas turbine domain using AI techniques. Through), both domain knowledge from experts about how to solve problems in the gas turbine and information about

Sripada, Yaji

58

Full-waveform inversion in the time domain with an energy-weighted gradient  

SciTech Connect (OSTI)

When applying full-waveform inversion to surface seismic reflection data, one difficulty is that the deep region of the model is usually not reconstructed as well as the shallow region. We develop an energy-weighted gradient method for the time-domain full-waveform inversion to accelerate the convergence rate and improve reconstruction of the entire model without increasing the computational cost. Three different methods can alleviate the problem of poor reconstruction in the deep region of the model: the layer stripping, depth-weighting and pseudo-Hessian schemes. The first two approaches need to subjectively choose stripping depths and weighting functions. The third one scales the gradient with only the forward propagation wavefields from sources. However, the Hessian depends on wavefields from both sources and receivers. Our new energy-weighted method makes use of the energies of both forward and backward propagated wavefields from sources and receivers as weights to compute the gradient. We compare the reconstruction of our new method with those of the conjugate gradient and pseudo-Hessian methods, and demonstrate that our new method significantly improves the reconstruction of both the shallow and deep regions of the model.

Zhang, Zhigang [Los Alamos National Laboratory; Huang, Lianjie [Los Alamos National Laboratory; Lin, Youzuo [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

59

New directions in photonics simulation: Lanczos recursion and finite-difference time-domain  

SciTech Connect (OSTI)

Computational Integrated Photonics (CIP) is the area of computational physics that treats the propagation of light in optical fibers and in integrated optical circuits. The purpose of integrated photonics simulation is to develop the computational tools that will support the design of photonic and optoelectronic integrated devices. CIP has, in general, two thrusts: (1) predictive models of photonic device behavior that can be used reliably to enhance significantly the speed with which designs axe optimized for development applications, and (2) to further our ability to describe the linear and nonlinear processes that occur - and can be exploited - in real photonic devices. Experimental integrated optics has been around for over a decade with much of the work during this period. centered on proof-of-principle devices that could be described using simple analytic and numerical models. Recent advances in material growths, photolithography, and device complexity have conspired to reduce significantly the number of devices that can be designed with simple models and to increase dramatically the interest in CIP. In the area of device design, CIP is viewed as critical to understanding device behavior and to optimization. In the area of propagation physics, CIP is an important tool in the study of nonlinear processes in integrated optical devices and fibers. In this talk I will discuss two of the new directions we have been investigating in CIP: Lanczos recursion and finite-difference time-domain.

Hawkins, R.J.; McLeod, R.R.; Kallman, J.S.; Ratowsky, R.P.; Feit, M.D.; Fleck, J.A. Jr.

1992-06-01T23:59:59.000Z

60

Ultrafast heterogeneous electron transfer reactions: Comparative theoretical studies on time- and frequency-domain data  

SciTech Connect (OSTI)

Recent theoretical studies on linear absorption spectra of dye-semiconductor systems [perylene attached to nanostructured TiO{sub 2}, L. Wang et al., J. Phys. Chem. B 109, 9589 (2005)] are extended here in different respects. Since the systems show ultrafast photoinduced heterogeneous electron transfer the time-dependent formulation used to compute the absorbance is also applied to calculate the temporal evolution of the sub-100 fs charge injection dynamics after a 10 fs laser-pulse excitation. These studies complement our recent absorption spectra fit for two perylene bridge-anchor group TiO{sub 2} systems. Moreover, the time-dependent formulation of the absorbance is confronted with a frequency-domain description. The latter underlines the central importance of the self-energy caused by the coupling of the dye levels to the semiconductor band continuum. The used model is further applied to study the effect of different parameters such as (1) the dependence on the reorganization energies of the involved intramolecular transitions, (2) the effect of changing the transfer integral which couples the excited dye state with the band continuum, and (3) the effect of the concrete form of the semiconductor band density of states. Emphasis is also put on the case where the charge injection level of the dye is near or somewhat below the band edge. This nicely demonstrates the change from a structureless absorption to a well-resolved vibrational progression including characteristic shifts of the absorption lines which are a direct measure for the dye-semiconductor coupling.

Wang Luxia; Willig, Frank; May, Volkhard [Institut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, D-12489 Berlin (Germany); Hahn-Meitner-Institut, Abteilung Dynamik von Genzflaechenreaktionen, Glienicker Strasse 100, 14109 Berlin (Germany); Institut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, D-12489 Berlin (Germany)

2006-01-07T23:59:59.000Z

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

4.6 MATLAB Laboratory Experiment Purpose: This experiment presents the frequency domain analysis of continuous-time  

E-Print Network [OSTI]

4.6 MATLAB Laboratory Experiment Purpose: This experiment presents the frequency domain analysis of continuous-time linear systems using MATLAB. The impulse, step, sinusoidal, and exponential responses. In addition, MATLAB will be used to perform the partial fraction expansion and to find the inverse Laplace

Gajic, Zoran

62

Time-Domain ab Initio Study of Charge Relaxation and Recombination in Dye-Sensitized TiO2  

E-Print Network [OSTI]

with surface hopping in the Kohn-Sham basis. Representing the dye-sensitized semiconductor Gra¨tzel cellTime-Domain ab Initio Study of Charge Relaxation and Recombination in Dye-Sensitized TiO2 Walter R understanding of these processes is crucial for improving solar cell design and optimizing photovoltaic current

63

Numerical simulation of borehole acoustic logging in the frequency and time domains with hp-adaptive finite elements  

E-Print Network [OSTI]

and for the improvement of acoustic logging techniques used by oil- and oil-service companies to detect and quantifyNumerical simulation of borehole acoustic logging in the frequency and time domains with hp Available online 8 January 2009 Keywords: Acoustic logging Borehole acoustics Wave propagation Linear

Torres-VerdĂ­n, Carlos

64

NewsInEssence: A System For Domain-Independent, Real-Time News Clustering and Multi-Document  

E-Print Network [OSTI]

from a news Web site. Our system then searches other live sources of news for other stories relatedNewsInEssence: A System For Domain-Independent, Real-Time News Clustering and Multi,sashabg,zhuzhang,rsundara @umich.edu 1. INTRODUCTION NEWSINESSENCE is a system for finding, visualizing and sum- marizing a topic

Radev, Dragomir R.

65

NewsInEssence: A System For DomainIndependent, RealTime News Clustering and MultiDocument  

E-Print Network [OSTI]

from a news Web site. Our system then searches other live sources of news for other stories relatedNewsInEssence: A System For Domain­Independent, Real­Time News Clustering and Multi,sashabg,zhuzhang,rsundarag@umich.edu 1. INTRODUCTION NEWSINESSENCE is a system for finding, visualizing and sum­ marizing a topic

Radev, Dragomir R.

66

296 OPTICS LETTERS / Vol. 19, No. 4 / February 15, 1994 Time-domain optical data storage by use of  

E-Print Network [OSTI]

to create ground-state (spin) coherences. The key property for optical data storage is that these spin296 OPTICS LETTERS / Vol. 19, No. 4 / February 15, 1994 Time-domain optical data storage by use of the process. In this Raman optical storage process homogeneous decay of the optical coherence does not prevent

Shahriar, Selim

67

Far-infrared optical and dielectric response of ZnS measured by terahertz time-domain spectroscopy  

E-Print Network [OSTI]

Far-infrared optical and dielectric response of ZnS measured by terahertz time-domain spectroscopy material in the infrared and far-infrared region.1 It plays a vital role in being used as infrared windows the frequency-dependent optical properties and complex di- electric response of ZnS over a broad far-infrared

68

Study of two-dimensional transient cavity fields using the finite-difference time-domain technique  

SciTech Connect (OSTI)

This work is intended to be a study into the application of the finite-difference time-domain, or FD-TD technique, to some of the problems faced by designers of equipment used in modern accelerators. In particular it discusses using the FD-TD algorithm to study the field distribution of a simple two-dimensional cavity in both space and time. 18 refs.

Crisp, J.L.

1988-06-01T23:59:59.000Z

69

Extended-time multi-taper frequency domain cross-correlation receiver function estimation  

E-Print Network [OSTI]

produced by the incident wave field, also called 1 #12;the receiver function. The concept is simple function. They include frequency domain division with a spectral water level (Langston, 1979; Owens et al; 2005). This defeats MTRF's direct use for transition zone structure studies, but there are remedies

Helffrich, George

70

A Characteristic Domain Decomposition and SpaceTime Local Refinement Method for  

E-Print Network [OSTI]

partial differential equations model the reactive transport of solutes in groundwater and surface water with other domain decomposition and local refinement schemes. 1 Introduction First­order linear hyperbolic interfaces that introduce extra difficulties. Physical interfaces arise, for example, in the modeling

Sharpley, Robert

71

T. J. Brukilacchio, Ph.D. Thesis 2003 Characterization and Noise Performance of a Time-Domain Breast  

E-Print Network [OSTI]

at 850 nm, resulting in proportionally lower power when the intensity is integrated over wavelength/GS thermal detector which was also calibrated to NIST traceable Figure 6.1 The relative power and spectral between 750 and 850 nm. Relative Power of Time Domain Ti:Sapphire Mai-Tai Spectra 0.0 0.2 0.4 0.6 0.8 1

72

Inverse analysis of temperature-time data with grossly different time scales using Beck`s second method and the Frankel-Keyhani whole-domain technique  

SciTech Connect (OSTI)

In general, inverse heat conduction analysis utilizes the measured temperature history at one or more internal locations to estimate unknown boundary conditions, energy generation rates, or thermophysical properties. Analysis of these data using conventional numerical heat transfer techniques yields numerically unstable solutions; that is, small perturbations in the input data can produce large variations and instabilities in the output. Previous attempts to overcome this inherent instability have involved the utilization of future information and Tikhonov regularization techniques (Beck et al, 1985). In the 1970`s and 80`s, Beck and coworkers developed a family of techniques that overcome this obstacle by relating the surface property at any time in the transient to temperatures measured after that time in the transient (Beck, 1970, Beck et al, 1982). That is, future information is used to determine present conditions. For many purposes, these techniques are the standard analysis tools. An alternative approach has been developed recently by Frankel and Keyhani (1997). This approach utilizes a whole domain form in which the entire space-time domain of interest is simultaneously resolved; the traditional instability occurs only near the final time endpoint and can be excluded from the resulting solution. Rapid convergence and accurate results have been demonstrated using this approach. Two sets of time-temperature data have been analyzed using both of these techniques.

Park, J.E. [Oak Ridge National Lab., TN (United States). Computational Physics and Engineering Div.; Frankel, J.I.; Keyhani, M.; Osborne, G.E. [Univ. of Tennessee, Knoxville, TN (United States). Dept. of Mechanical and Aerospace Engineering and Engineering Science

1998-11-01T23:59:59.000Z

73

Time-resolved observation of fast domain-walls driven by vertical spin currents in short tracks  

SciTech Connect (OSTI)

We present time-resolved measurements of the displacement of magnetic domain-walls (DWs) driven by vertical spin-polarized currents in track-shaped magnetic tunnel junctions. In these structures, we observe very high DW velocities (600?m/s) at current densities below 10{sup 7}?A/cm{sup 2}. We show that the efficient spin-transfer torque combined with a short propagation distance allows avoiding the Walker breakdown process and achieving deterministic, reversible, and fast (?1?ns) DW-mediated switching of magnetic tunnel junction elements, which is of great interest for the implementation of fast DW-based spintronic devices.

Sampaio, Joao; Lequeux, Steven; Chanthbouala, Andre; Cros, Vincent; Grollier, Julie [Unité Mixte de Physique CNRS/Thales and Université Paris-Sud 11, 1 Ave. A. Fresnel, 91767 Palaiseau (France)] [Unité Mixte de Physique CNRS/Thales and Université Paris-Sud 11, 1 Ave. A. Fresnel, 91767 Palaiseau (France); Metaxas, Peter J. [Unité Mixte de Physique CNRS/Thales and Université Paris-Sud 11, 1 Ave. A. Fresnel, 91767 Palaiseau (France) [Unité Mixte de Physique CNRS/Thales and Université Paris-Sud 11, 1 Ave. A. Fresnel, 91767 Palaiseau (France); School of Physics, M013, University of Western Australia, 35 Stirling Highway, Crawley WA 6009 (Australia); Matsumoto, Rie; Yakushiji, Kay; Kubota, Hitoshi; Fukushima, Akio; Yuasa, Shinji [National Institute of Advanced Industrial Science and Technology (AIST) 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568 (Japan)] [National Institute of Advanced Industrial Science and Technology (AIST) 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568 (Japan); Nishimura, Kazumasa; Nagamine, Yoshinori; Maehara, Hiroki; Tsunekawa, Koji [Process Development Center, Canon ANELVA Corporation, Kurigi 2-5-1, Asao, Kawasaki, Kanagawa 215-8550 (Japan)] [Process Development Center, Canon ANELVA Corporation, Kurigi 2-5-1, Asao, Kawasaki, Kanagawa 215-8550 (Japan)

2013-12-09T23:59:59.000Z

74

Soft X-ray reflectometry applied to the evaluation of surface roughness variation during the deposition of thin films  

E-Print Network [OSTI]

1645 Soft X-ray reflectometry applied to the evaluation of surface roughness variation during). The surface roughness evolution was calculated as a function of thickness from the soft X-ray reflectance Abstracts 07.60H - 68.20 - 68.55 - 78.65 Introduction. Soft X-ray reflectometry (SXR) was introduced

Boyer, Edmond

75

Scaling Behavior of the First Arrival Time of a Random-Walking Magnetic Domain  

E-Print Network [OSTI]

CoCr and CoCrPt films and the observation window size (40 µmCo 82 Cr 18 film. Three different time windows of 1, 30, andwindow of space and time in CoCr and CoCrPt alloy films. The

Im, M.-Y.

2009-01-01T23:59:59.000Z

76

The Effect of the Additivity Assumption on Time and Frequency Domain Wiener Filtering for Speech Enhancement  

E-Print Network [OSTI]

under short-time analysis typi- cally used for speech enhancement. In order to achieve this we have performed speech enhancement experiments, where speech corrupted by additive white Gaussian noise degradation of enhanced speech quality. Informal listening tests show that the background noise resulting from

77

Downstream asymptotics in exterior domains: from stationary wakes to time periodic flows  

E-Print Network [OSTI]

We consider the time-dependent Navier-Stokes equations in a half-space with boundary data on the line $(x,y)=(x_0,y)$ assumed to be time-periodic (or stationary) with a fixed asymptotic velocity ${\\bf u}_{\\infty}=(1,0)$ at infinity. We show that there exist (locally) unique solutions for all data satisfying a compatibility condition in a certain class of fuctions. Furthermore, we prove that asymptotically the vorticity decompose itself in a dominant stationary part on the parabolic scale $y\\sim\\sqrt{x}$ and corrections of order $x^{-{3/2}+\\epsilon}$, while the velocity field decompose itself in a dominant stationary part in form of an explicit multiscale expansion on the scales $y\\sim\\sqrt{x}$ and $y\\sim x$ and corrections decaying at least like $x^{-{9/8}+\\epsilon}$. The asymptotic fields are made of linear combinations of universal functions with coefficients depending mildly on the boundary data. The asymptotic expansion for the component parallel to ${\\bf u}_{\\infty}$ contains `non-trivial' terms in the parabolic scale with amplitude $\\ln(x)x^{-1}$ and $x^{-1}$. To first order, our results also imply that time-periodic wakes behave like stationary ones as $x\\to\\infty$. The class of functions used is `natural' in the sense that `Physically Reasonable' (in the sense of Finn & Smith) stationary solutions of the N.-S. equations around an obstacle are covered if the half-space is choosen sufficiently far downstream. The coefficients appearing in the asymptotics may then be linearly related to the net force acting on the obstacle. To our knowledge, it is the first time that estimates uncovering the $\\ln(x)x^{-1}$ correction are proved in this setting.

G. van Baalen

2004-11-04T23:59:59.000Z

78

Hull/mooring/riser coupled dynamic analysis of a floating platform in time domain  

E-Print Network [OSTI]

this program is about ten times faster than its sibling based on the same FEM theory given by D. L. Garrett in 19g2. The Present Case Study In order to examine the benefits of non-linear coupled dynamic analysis of floating offshore structures with flexible... dynamic analysis, a finite-element-method (FEM) program WINPOST was used (e. g. Kim, 1997; Ran and Kim, 1997). The mooring dynamics program was based on a global-coordinate- based FEM (Garrett, 1982), which is expected to be more efficient than...

Zheng, Weizhong

2000-01-01T23:59:59.000Z

79

Modeling a thermionic energy converter using finite-difference time-domain particle-in-cell simulations  

SciTech Connect (OSTI)

A thermionic energy converter (TEC) is a static device that converts heat directly into electricity by boiling electrons off a hot emitter surface across a small inter-electrode gap to a cooler collector surface. The main challenge in TECs is overcoming the space charge limit, which limits the current transmitted across a gap of a given voltage and width. We have verified the feasibility of studying and developing a TEC using a bounded finite-difference time-domain particle-in-cell plasma simulation code, OOPD1, developed by Plasma Theory and Simulation Group, formerly at UC Berkeley and now at Michigan State University. In this preliminary work, a TEC has been modeled kinetically using OOPD1, and the accuracy has been verified by comparing with an analytically solvable case, giving good agreement. With further improvement of the code, one will be able to quickly and cheaply analyze space charge effects, and seek designs that mitigate the space charge effect, allowing TECs to become more efficient and cost-effective.

Lo, F. S.; Lee, T. H. [Department of Mechanical Engineering, National Central University, Jhongli City, Taoyuan County 32001, Taiwan (China)] [Department of Mechanical Engineering, National Central University, Jhongli City, Taoyuan County 32001, Taiwan (China); Lu, P. S. [NanoScience Simulation Laboratory, Fu Jen Catholic University, Xinzhuang Dist., New Taipei City 24205, Taiwan (China)] [NanoScience Simulation Laboratory, Fu Jen Catholic University, Xinzhuang Dist., New Taipei City 24205, Taiwan (China); Ragan-Kelley, B. [Applied Science and Technology, University of California, Berkeley, California 94720 (United States) [Applied Science and Technology, University of California, Berkeley, California 94720 (United States); Plasma Theory and Simulation Group, University of California, Berkeley, California 94720 (United States); Minnich, A. [Plasma Theory and Simulation Group, University of California, Berkeley, California 94720 (United States) [Plasma Theory and Simulation Group, University of California, Berkeley, California 94720 (United States); Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125 (United States); Lin, M. C., E-mail: mingchiehlin@gmail.com [NanoScience Simulation Laboratory, Fu Jen Catholic University, Xinzhuang Dist., New Taipei City 24205, Taiwan (China); Plasma Theory and Simulation Group, University of California, Berkeley, California 94720 (United States); Verboncoeur, J. P. [Plasma Theory and Simulation Group, University of California, Berkeley, California 94720 (United States) [Plasma Theory and Simulation Group, University of California, Berkeley, California 94720 (United States); Department of Electrical and Computing Engineering, Michigan State University, East Lansing, Michigan 48824 (United States)

2014-02-15T23:59:59.000Z

80

332 IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 4, NO. 2, MARCH/APRIL 1998 Time-Domain Image Processing  

E-Print Network [OSTI]

using diffraction from dynamic holograms inside a Fourier pulse shaper, with photorefractive quantum, depending on the hologram writing geometry and power densities. Time-domain processing operations such as edge enhancement, Fourier transform, and correlation are demonstrated. Index Terms--Holography, image

Nolte, David D.

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

A new measure of acceleration of heart rate: dependence on age and comparison with time domain conventional heart rate variability measures  

E-Print Network [OSTI]

A new measure of acceleration of heart rate: dependence on age and comparison with time domain conventional heart rate variability measures Giuseppe Germanò, M.D., Gianfranco Piccirillo, M.D., *Camillo We introduce a new index, Acceleration Ratio (AR), in order to investigate the dependence of Heart

Cammarota, Camillo

82

Investigation of turbulence in reversed field pinch plasma by using microwave imaging reflectometry  

SciTech Connect (OSTI)

Turbulence in the reversed field pinch (RFP) plasma has been investigated by using the microwave imaging reflectometry in the toroidal pinch experiment RX (TPE-RX). In conventional RFP plasma, the fluctuations are dominated by the intermittent blob-like structures. These structures are accompanied with the generation of magnetic field, the strong turbulence, and high nonlinear coupling among the high and low k modes. The pulsed poloidal current drive operation, which improves the plasma confinement significantly, suppresses the dynamo, the turbulence, and the blob-like structures.

Shi, Z. B. [Graduate University for Advanced Studies, Toki 509-5292 (Japan); Southwestern Institute of Physics, Chengdu 610041 (China); Nagayama, Y.; Hamada, Y. [National Institute for Fusion Science, Toki 509-5292 (Japan); Yamaguchi, S. [Kansai University, Suita 564-8680 (Japan); Hirano, Y.; Kiyama, S.; Koguchi, H.; Sakakita, H. [Advanced Industrial Science and Technology, Tsukuba 305-8568 (Japan); Michael, C. A. [UKAEA, Abingdon, Oxfordshire OX14 3DB (United Kingdom); Yambe, K. [Osaka University, Osaka 565-0871 (Japan)

2011-10-15T23:59:59.000Z

83

In-situ Spectroscopic Reflectometry for Polycrystalline Silicon Thin Film Etch Rate Determination During Reactive Ion Etching  

E-Print Network [OSTI]

for low-cost, high-speed film thickness measurement systems. We have used spectroscopic reflectometry (SR features in the fabrication process of microelectronic devices and circuitry. As the integrated circuits industry continues its progress toward higher performance circuitry, circuit designers are pushing

Terry, Fred L.

84

Design of an efficient single photon source from a metallic nanorod dimer: a quasinormal mode finite-difference time-domain approach  

E-Print Network [OSTI]

We describe how the finite-difference time-domain (FDTD) technique can be used to compute the quasinormal mode (QNM) for metallic nano-resonators, which is important for describing and understanding light-matter interactions in nanoplasmonics. We use the QNM to model the enhanced spontaneous emission rate for dipole emitters near a gold nanorod dimer structure using a newly developed QNM expansion technique. Significant enhanced photon emission factors of around 1500 are obtained with large output $\\beta$-factors of about $60\\%$.

Ge, Rong-Chun

2015-01-01T23:59:59.000Z

85

Concrete Domains   

E-Print Network [OSTI]

This paper introduces the theory of a particular kind of computation domains called concrete domains. The purpose of this theory is to find a satisfactory framework for the notions of coroutine computation and sequentiality ...

Kahn, Gilles; Plotkin, Gordon

1993-01-01T23:59:59.000Z

86

A tapering window for time-domain templates and simulated signals in the detection of gravitational waves from coalescing compact binaries  

E-Print Network [OSTI]

Inspiral signals from binary black holes, in particular those with masses in the range $10M_\\odot \\lsim M \\lsim 1000 M_\\odot,$ may last for only a few cycles within a detector's most sensitive frequency band. The spectrum of a square-windowed time-domain signal could contain unwanted power that can cause problems in gravitational wave data analysis, particularly when the waveforms are of short duration. There may be leakage of power into frequency bins where no such power is expected, causing an excess of false alarms. We present a method of tapering the time-domain waveforms that significantly reduces unwanted leakage of power, leading to a spectrum that agrees very well with that of a long duration signal. Our tapered window also decreases the false alarms caused by instrumental and environmental transients that are picked up by templates with spurious signal power. The suppression of background is an important goal in noise-dominated searches and can lead to an improvement in the detection efficiency of the search algorithms.

D. J. A. McKechan; C. Robinson; B. S. Sathyaprakash

2010-03-15T23:59:59.000Z

87

Spectral inhomogeneity induced by vacancies and thermal phonons and associated observables in time-and frequency-domain nonlinear  

E-Print Network [OSTI]

Spectral inhomogeneity induced by vacancies and thermal phonons and associated observables in time by vacancies and thermally populated phonons, specializing to molecular iodine isolated in an Ar matrix. At experimentally relevant temperatures, for a vacancy concentration of 1.4%, both defect-induced and phonon

Apkarian, V. Ara

88

A General Methodology for Introducing Structured Nonorthogonal Grids into High-Order Finite-Difference Time-Domain Methods  

E-Print Network [OSTI]

. The method employs a coordinate transformation to map an arbitrary nonorthogonal structured grid onto transformation is used to map an arbitrary nonorthogonal structured grid onto a rectangular grid with uniformly rectangular grid can be used to carry out the time stepping. Generating a coordinate transformation to map one

89

Surface force confinement cell for neutron reflectometry studies of complex fluids under nano-confinement  

SciTech Connect (OSTI)

In this paper, we describe the construction of a new neutron surface force confinement cell (NSFCC). The NSFCC is equipped with hydraulically powered in-situ, temporally stable, force control system for simultaneous neutron reflectometry studies of nano-confined complex fluid systems. Test measurements with deuterated toluene confined between two opposing diblock copolymer (polystyrene + poly 2-vinylpyridine) coated quartz substrates demonstrate the capabilities of the NSFCC. With increasing hydraulically-applied force, a series of well-defined decreasing separations were observed from neutron reflectivity measurements. No noticeable changes in the hydraulic pressure used for controlling the surface separation were observed during the measurements, demonstrating the high stability of the apparatus. This newly designed NSFCC introduces a higher level of control for studies of confinement and consequent finite size effects on nano-scale structure in a variety of complex fluid and soft condensed matter systems.

Cho, Jae-Hie [ORNL; Smith, Gregory Scott [ORNL; Hamilton, William A. [ANSTO; Mulder, D. [University of California, Davis; Kuhl, T. L. [University of California, Davis; Mays, Jimmy [ORNL

2008-01-01T23:59:59.000Z

90

Atomistic Time-Domain Simulations of Light-Harvesting and Charge-Transfer Dynamics in Novel Nanoscale Materials for Solar Hydrogen Production.  

SciTech Connect (OSTI)

Funded by the DOE grant (i) we continued to study and analyze the atomistic detail of the electron transfer (ET) across the chromophore-TiO2 interface in Gratzel cell systems for solar hydrogen production. (ii) We extensively investigated the nature of photoexcited states and excited state dynamics in semiconductor quantum dots (QD) designed for photovoltaic applications. (iii) We continued a newly initiated research direction focusing on excited state properties and electron-phonon interactions in nanoscale carbon materials. Over the past year, the results of the DOE funded research were summarized in 3 review articles. 12 original manuscripts were written. The research results were reported in 28 invited talks at conferences and university seminars. 20 invitations were accepted for talks in the near future. 2 symposia at national and international meetings have being organized this year on topics closely related to the DOE funded project, and 2 more symposia have been planned for the near future. We summarized the insights into photoinduced dynamics of semiconductor QDs, obtained from our time-domain ab initio studies. QDs exhibit both molecular and bulk properties. Unlike either bulk or molecular materials, QD properties can be modified continuously by changing QD shape and size. However, the chemical and physical properties of molecular and bulk materials often contradict each other, which can lead to differing viewpoints about the behavior of QDs. For example, the molecular view suggests strong electron-hole and charge-phonon interactions, as well as slow energy relaxation due to mismatch between electronic energy gaps and phonon frequencies. In contrast, the bulk view advocates that the kinetic energy of quantum confinement is greater than electron-hole interactions, that charge-phonon coupling is weak, and that the relaxation through quasi-continuous bands is rapid. By synthesizing the bulk and molecular viewpoints, we clarified the controversies and provided a unified atomistic picture of the nature and dynamics of photoexcited states in semiconductor QDs. We also summarized our recent findings about the photoinduced electron dynamics at the chromophore-semiconductor interfaces from a time-domain ab initio perspective. The interface provides the foundation for a new, promising type of solar cell and presents a fundamentally important case study for several fields, including photo-, electro- and analytical chemistries, molecular electronics, and photography. Further, the interface offers a classic example of an interaction between an organic molecular species and an inorganic bulk material. Scientists employ different concepts and terminologies to describe molecular and solid states of matter, and these differences make it difficult to describe the interface with a single model. At the basic atomistic level of description, however, this challenge can be largely overcome. Recent advances in non-adiabatic molecular dynamics and time-domain density functional theory have created a unique opportunity for simulating the ultrafast, photoinduced processes on a computer very similar to the way that they occur in nature. These state-of-the-art theoretical tools offered a comprehensive picture of a variety of electron transfer processes that occur at the interface, including electron injection from the chromophore to the semiconductor, electron relaxation and delocalization inside the semiconductor, back-transfer of the electron to the chromophore and to the electrolyte, and regeneration of the neutral chromophore by the electrolyte. The ab initio time-domain modeling is particularly valuable for understanding these dynamic features of the ultrafast electron transfer processes, which cannot be represented by a simple rate description. We demonstrated using symmetry adapted cluster theory with configuration interaction (SAC-CI) that charging of small PbSe nanocrystals (NCs) greatly modifies their electronic states and optical excitations. Conduction and valence band transitions that are not available in neutral NCs dominate

Prezhdo, Oleg V.

2012-03-22T23:59:59.000Z

91

Characterization of iso-CF{sub 2}I{sub 2} in frequency and ultrafast time domains  

SciTech Connect (OSTI)

The photolysis of diiododifluoromethane (CF{sub 2}I{sub 2}) in condensed phases was studied by a combination of matrix isolation and ultrafast time-resolved spectroscopy, in concert with ab initio calculations. Photolysis at wavelengths of 355 or 266 nm of CF{sub 2}I{sub 2}:Ar samples (1:5000) held at {approx}8 K yielded iso-CF{sub 2}I{sub 2} (F{sub 2}C-I-I), a metastable isomer of CF{sub 2}I{sub 2}, characterized here for the first time. The infrared (IR) spectra of this isomer were recorded in matrix experiments, and the derived positions of the C-F stretching modes are in very good agreement with the predictions of high level ab initio calculations, which show that the iso-form is a minimum on the CF{sub 2}I{sub 2} ground state potential energy surface. The formation of this isomer following 350 nm excitation of CF{sub 2}I{sub 2} in room temperature CCl{sub 4} solutions was monitored through its intense C-F stretching mode by means of ultrafast time-resolved IR absorption. Together, matrix isolation and ultrafast IR absorption experiments suggest that the formation of iso-CF{sub 2}I{sub 2} occurs via recombination of CF{sub 2}I radical and I atom. Ultrafast IR experiments detect a delayed rise of iso-CF{sub 2}I-I absorption, placing an upper limit of 400 fs for the C-I bond dissociation and primary geminate recombination processes. The product absorption spectrum recorded 1 ns after 350 nm excitation of CF{sub 2}I{sub 2} in solution is virtually identical to the visible absorption spectrum of iso-CF{sub 2}I{sub 2} trapped in matrix isolation experiments [with subtracted I{sub 2}(X) absorption]. The formation of this isomer in solution at room temperature has direct dynamic implications for the ultrafast production of molecular iodine from electronically excited CF{sub 2}I{sub 2}.

El-Khoury, Patrick Z.; Tarnovsky, Alexander N. [Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403-0001 (United States); George, Lisa; Kalume, Aimable; Reid, Scott A. [Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881 (United States); Ault, Bruce S. [Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172 (United States)

2010-03-28T23:59:59.000Z

92

A Novel Fractional Order Fuzzy PID Controller and Its Optimal Time Domain Tuning Based on Integral Performance Indices  

E-Print Network [OSTI]

A novel fractional order (FO) fuzzy Proportional-Integral-Derivative (PID) controller has been proposed in this paper which works on the closed loop error and its fractional derivative as the input and has a fractional integrator in its output. The fractional order differ-integrations in the proposed fuzzy logic controller (FLC) are kept as design variables along with the input-output scaling factors (SF) and are optimized with Genetic Algorithm (GA) while minimizing several integral error indices along with the control signal as the objective function. Simulations studies are carried out to control a delayed nonlinear process and an open loop unstable process with time delay. The closed loop performances and controller efforts in each case are compared with conventional PID, fuzzy PID and PI{\\lambda}D{\\mu} controller subjected to different integral performance indices. Simulation results show that the proposed fractional order fuzzy PID controller outperforms the others in most cases.

Das, Saptarshi; Das, Shantanu; Gupta, Amitava; 10.1016/j.engappai.2011.10.004

2012-01-01T23:59:59.000Z

93

HANFORD DOUBLE SHELL TANK (DST) THERMAL & SEISMIC PROJECT ESTABLISHMENT OF METHODOLOGY FOR TIME DOMAIN SOIL STRUCTURE INTERACTION ANALYSIS OF HANFORD DST  

SciTech Connect (OSTI)

M&D Professional Services, Inc. (M&D) is under subcontract to Pacific Northwest National Laboratories (PNNL) to perform seismic analysis of the Hanford Site Double-Shell Tanks (DSTs) in support of a project entitled ''Double-Shell Tank DSV Integrity Project-DST Thermal and Seismic Analyses''. The overall scope of the project is to complete an up-to-date comprehensive analysis of record of the DST System at Hanford in support of Tri-Party Agreement Milestone M-48-14. The thermal and operating loads analysis of the DSTs is documented in Rinker et al. (2004). The work statement provided to M&D (PNNL 2003) required that the seismic analysis of the DST assess the impacts of potentially non-conservative assumptions in previous analyses and account for the additional soil mass due to the as-found soil density increase, the effects of material degradation, additional thermal profiles applied to the full structure including the soil-structure response with the footings, the non-rigid (low frequency) response of the tank roof, the asymmetric seismic-induced soil loading, the structural discontinuity between the concrete tank wall and the support footing and the sloshing of the tank waste. The seismic analysis considers the interaction of the tank with the surrounding soil, and the effects of the primary tank contents. The DST and the surrounding soil are modeled as a system of finite elements. The depth and width of the soil incorporated into the analysis model are sufficient to obtain appropriately accurate analytical results. The analyses required to support the work statement differ from previous analysis of the DSTs in that the soil-structure interaction (SSI) model includes several (nonlinear) contact surfaces in the tank structure, and the contained waste must be modeled explicitly in order to capture the fluid-structure interaction behavior between the primary tank and contained waste. Soil-structure interaction analyses are traditionally solved in the frequency domain, but frequency domain analysis is limited to systems with linear responses. The nonlinear character of the coupled SSI model and tank structural model requires that the seismic analysis be solved in the time domain. However, time domain SSI analysis is somewhat nontraditional and requires that the appropriate methodology be developed and demonstrated. Moreover, the analysis of seismically induced fluid-structure interaction between the explicitly modeled waste and the primary tank must be benchmarked against known solutions to simpler problems before being applied to the more complex analysis of the DSTs. The objective of this investigation is to establish the methodology necessary to perform the required SSI analysis of the DSTs in the time domain. Specifically, the analysis establishes the capabilities and limitations of the time domain codes ANSYS and Dytran for performing seismic SSI analysis of the DSTs. The benchmarking of the codes Dytran and ANSYS for performing seismically induced fluid-structure interaction (FSI) between the contained waste and the DST primary tank are documented in Abatt (2006) and Carpenter and Abatt (2006), respectively. The results of those two studies show that both codes have the capability to analyze the fluid-structure interaction behavior of the primary tank and contained waste. As expected, Dytran appears to have more robust capabilities for FSI analysis. The ANSYS model used in that study captures much of the FSI behavior, but does have some limitations for predicting the convective response of the waste and possibly the response of the waste in the knuckle region of the primary tank. While Dytran appears to have somewhat stronger capabilities for the analysis of the FSI behavior in the primary tank, it is more practical for the overall analysis to use ANSYS. Thus, Dytran served the purpose of helping to identify limitations in the ANSYS FSI analysis so that those limitations can be addressed in the structural evaluation of the primary tank. The limitations of ANSYS for predicting the details of the convective

MACKEY, T.C.

2006-03-14T23:59:59.000Z

94

TIME DOMAIN MULTIPLE QUANTUM NMR  

E-Print Network [OSTI]

D. Wemmer, J. Tang and S. Sinton, Bull. Amer. Phys. Soc.G. Drobny, A. Pines, S. Sinton, D. P. Weitekamp and D.1977. 143. W. S. Warren, S. Sinton, D. P. Weitekamp and A.

Weitekamp, D.P.

2008-01-01T23:59:59.000Z

95

The component groups structure of DPPC bilayers obtained by specular neutron reflectometry  

E-Print Network [OSTI]

Specular neutron reflectometry (SNR) was measured on a system of a floating bilayer consisting of 1,2-dipalmitoyl-d62-\\textit{sn}-glycero-3-phosphocholine (d62-diC16:0PC) deposited over a 1,2-dibehenoyl-\\textit{sn}-glycero-3-phosphocholine (diC22:0PC) bilayer at 25 and 55 {\\deg}C. The internal structure of lipid bilayers was described by a one dimensional scattering length density profile (SLDP) model, originally developed for the evaluation of small angle scattering data. The corresponding model reflectivity curves successfully describe the experimental reflectivity curves of a supported bilayer in the gel phase and a system of a floating bilayer in the liquid crystalline phase. The reflectivity data from the supported bilayer were evaluated individually and served further as an input by the data treatment of floating bilayer reflectivity curves. The results yield internal structure of a deposited and floating bilayer on the level of component groups of lipid molecules. The obtained structure of the floating d62-diC16:0PC bilayer displays high resemblance to the bilayer structure in the form of unilamellar vesicles, however, simultaneously it shows rate of fluctuations in comparison to unilamellar vesicle bilayers.

Michal Beli?ka; Yuri Gerelli; Norbert Ku?erka; Giovanna Fragneto

2014-12-16T23:59:59.000Z

96

High-pressure cell for neutron reflectometry of supercritical and subcritical fluids at solid interfaces  

SciTech Connect (OSTI)

A new high-pressure cell design for use in neutron reflectometry (NR) for pressures up to 50 MPa and a temperature range of 300 473 K is described. The cell design guides the neutron beam through the working crystal without passing through additional windows or the bulk fluid, which provides for a high neutron transmission, low scattering background, and low beam distortion. The o-ring seal is suitable for a wide range of subcritical and supercritical fluids and ensures high chemical and pressure stability. Wafers with a diameter of 5.08 cm (2 in.) and 5 mm or 10 mm thickness can be used with the cells, depending on the required pressure and momentum transfer range. The fluid volume in the sample cell is very small at about 0.1 ml, which minimizes scattering background and stored energy. The cell design and pressure setup for measurements with supercritical fluids are described. NR data are shown for silicon/silicon oxide and quartz wafers measured against air and subsequently within the high-pressure cell to demonstrate the neutron characteristics of the high-pressure cell. Neutron reflectivity data for supercritical CO2 in contact with quartz and Si/SiO2 wafers are also shown.

Carmichael, Justin R [ORNL; Rother, Gernot [ORNL; Browning, Jim [ORNL; Ankner, John Francis [ORNL; Banuelos, Jose Leo [ORNL; Anovitz, Lawrence {Larry} M [ORNL; Wesolowski, David J [ORNL; Cole, David [Ohio State University

2012-01-01T23:59:59.000Z

97

Eminent Domain Law (Iowa)  

Broader source: Energy.gov [DOE]

These regulations confer the power of eminent domain and describe procedures for exercising eminent domain in Iowa.

98

DMBC: Domain Names & Web Hosting Domain Names  

E-Print Network [OSTI]

DMBC: Domain Names & Web Hosting Domain Names Top Level Domains · .com · .net · .org · .edu · .gov.9% of the web-viewing audience is used to typing in. Chances are, a visitor will type in ".com" even if you tell and simple · Try to avoid dashes or underscores in the domain name unless there is no other option Web

Stowell, Michael

99

Concrete Domains and Nominals United Carlos Areces  

E-Print Network [OSTI]

Concrete Domains and Nominals United Carlos Areces University of Amsterdam The Netherlands carlos(D), the extension of ALC with concrete domains, is known to be PSpace-complete, in this article we show on the concrete domain D used). The proof is by a reduction of a NExpTime-complete variant of the domino problem

Lutz, Carsten

100

Domain Walls, Triples and Acceleration  

E-Print Network [OSTI]

We present a construction of domain walls in string theory. The domain walls can bridge both Minkowski and AdS string vacua. A key ingredient in the construction are novel classical Yang-Mills configurations, including instantons, which interpolate between toroidal Yang-Mills vacua. Our construction provides a concrete framework for the study of inflating metrics in string theory. In some cases, the accelerating space-time comes with a holographic description. The general form of the holographic dual is a field theory with parameters that vary over space-time.

Travis Maxfield; Savdeep Sethi

2014-04-09T23:59:59.000Z

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Characterization of oculomotor response to pseudorandom stimuli using time-domain analysis-effects of alcohol intoxication on smooth pursuit movements  

E-Print Network [OSTI]

. Introducing time delays through the use of lagged variables significantly improves the adjusted R values of the modeL ln fact, the first-order lagged variable improves the model more than introducing higher-order non-lagged terms. The smooth pursuit system... gender, and a number (e. g. F 1, M3). This thesi s follows the style of IEEE I'ransacrions on Biomedical Engineering. Hypotheses This is an exploratory study which will attempt to establish the validity of the following hypotheses: l. A model which...

Goldsberry, Dennis Hamilton

2012-06-07T23:59:59.000Z

102

Time-domain detection of current controlled magnetization damping in Pt/Ni{sub 81}Fe{sub 19} bilayer and determination of Pt spin Hall angle  

SciTech Connect (OSTI)

The effect of spin torque from the spin Hall effect in Pt/Ni{sub 81}Fe{sub 19} rectangular bilayer film was investigated using time-resolved magneto-optical Kerr microscopy. Current flow through the stack resulted in a linear variation of effective damping up to ±7%, attributed to spin current injection from the Pt into the Ni{sub 81}Fe{sub 19}. The spin Hall angle of Pt was estimated as 0.11?±?0.03. The modulation of the damping depended on the angle between the current and the bias magnetic field. These results demonstrate the importance of optical detection of precessional magnetization dynamics for studying spin transfer torque due to spin Hall effect.

Ganguly, A.; Haldar, A.; Sinha, J.; Barman, A., E-mail: abarman@bose.res.in, E-mail: del.atkinson@durham.ac.uk [Thematic Unit of Excellence on Nanodevice Technology, Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700098 (India); Rowan-Robinson, R. M.; Jaiswal, S.; Hindmarch, A. T.; Atkinson, D. A., E-mail: abarman@bose.res.in, E-mail: del.atkinson@durham.ac.uk [Department of Physics, Durham University, South Road, Durham DH1 3LE (United Kingdom)

2014-09-15T23:59:59.000Z

103

Modeling of optical amplifier waveguide based on silicon nanostructures and rare earth ions doped silica matrix gain media by a finite-difference time-domain method: comparison of achievable gain with Er3+ or Nd3+ ions dopants  

E-Print Network [OSTI]

A comparative study of the gain achievement is performed in a waveguide optical amplifier whose active layer is constituted by a silica matrix containing silicon nanograins acting as sensitizer of either neodymium ions (Nd 3+) or erbium ions (Er 3+). Due to the large difference between population levels characteristic times (ms) and finite-difference time step (10 --17 s), the conventional auxiliary differential equation and finite-difference time-domain (ADE-FDTD) method is not appropriate to treat such systems. Consequently, a new two loops algorithm based on ADE-FDTD method is presented in order to model this waveguide optical amplifier. We investigate the steady states regime of both rare earth ions and silicon nanograins levels populations as well as the electromagnetic field for different pumping powers ranging from 1 to 10 4 mW.mm-2. Furthermore, the three dimensional distribution of achievable gain per unit length has been estimated in this pumping range. The Nd 3+ doped waveguide shows a higher gross...

Cardin, Julien; Dufour, Christian; Gourbilleau, Fabrice

2015-01-01T23:59:59.000Z

104

Detecting Networks Employing Algorithmically Generated Domain Names  

E-Print Network [OSTI]

and hence has no com- mon IP address or a common domain name. Let ip = I be the total number of IP-addresses that are present after the F1 stage. and let d = D be total number of domain names that are present after the F1 stage. The vertices of graph G... for the second level domain name of xyz.com. At times a few of the IP addresses would end up in this component class because of a shortage in the 27 analysis period, given enough time ideally all the IP addresses (hosting server) of a single business unit...

Ashwath Kumar Krishna Reddy

2011-10-21T23:59:59.000Z

105

Domain walls riding the wave.  

SciTech Connect (OSTI)

Recent years have witnessed a rapid proliferation of electronic gadgets around the world. These devices are used for both communication and entertainment, and it is a fact that they account for a growing portion of household energy consumption and overall world consumption of electricity. Increasing the energy efficiency of these devices could have a far greater and immediate impact than a gradual switch to renewable energy sources. The advances in the area of spintronics are therefore very important, as gadgets are mostly comprised of memory and logic elements. Recent developments in controlled manipulation of magnetic domains in ferromagnet nanostructures have opened opportunities for novel device architectures. This new class of memories and logic gates could soon power millions of consumer electronic devices. The attractiveness of using domain-wall motion in electronics is due to its inherent reliability (no mechanical moving parts), scalability (3D scalable architectures such as in racetrack memory), and nonvolatility (retains information in the absence of power). The remaining obstacles in widespread use of 'racetrack-type' elements are the speed and the energy dissipation during the manipulation of domain walls. In their recent contribution to Physical Review Letters, Oleg Tretiakov, Yang Liu, and Artem Abanov from Texas A&M University in College Station, provide a theoretical description of domain-wall motion in nanoscale ferromagnets due to the spin-polarized currents. They find exact conditions for time-dependent resonant domain-wall movement, which could speed up the motion of domain walls while minimizing Ohmic losses. Movement of domain walls in ferromagnetic nanowires can be achieved by application of external magnetic fields or by passing a spin-polarized current through the nanowire itself. On the other hand, the readout of the domain state is done by measuring the resistance of the wire. Therefore, passing current through the ferromagnetic wire is the preferred method, as it combines manipulation and readout of the domain-wall state. The electrons that take part in the process of readout and manipulation of the domain-wall structure in the nanowire do so through the so-called spin transfer torque: When spin-polarized electrons in the ferromagnet nanowire pass through the domain wall they experience a nonuniform magnetization, and they try to align their spins with the local magnetic moments. The force that the electrons experience has a reaction force counterpart that 'pushes' the local magnetic moments, resulting in movement of the domain wall in the direction of the electron flow through the spin-transfer torque. The forces between the electrons and the local magnetic moments in the ferromagnet also create additional electrical resistance for the electrons passing through the domain wall. By measuring resistance across a segment of the nanowire, one determines if a domain wall is present; i.e., one can read the stored information. The interaction of the spin-polarized electrons with the domain wall in the ferromagnetic nanowire is not very efficient. Even for materials achieving high polarization of the free electrons, it is very difficult to move the magnetic domain wall. Several factors contribute to this problem, with imperfections of the ferromagnetic nanowire that cause domain-wall pinning being the dominant one. Permalloy nanowires, one of the best candidates for domain-wall-based memory and logic devices, require current densities of the order of 10{sup 8} A/cm{sup 2} in order to move a domain wall from a pinning well. Considering that this current has to pass through a relatively long wire, it is not very difficult to imagine that most of the energy will go to Joule heating. The efficiency of the process - the ratio of the energy converted to domain-wall motion to the total energy consumed - is comparable to that of an incandescent light bulb converting electricity to light. A step towards more efficient domain-wall-based memory devices is the advance of using alternating currents or curren

Karapetrov, G.; Novosad, V.; Materials Science Division

2010-11-01T23:59:59.000Z

106

Time-Domain Terahertz Spectroscopy of Water  

E-Print Network [OSTI]

of Water and Heavy Water . 16 3.C.3 Interpolated high frequency heavy water spectra at fivesecond system to study is heavy water, also known as D 2 O.

Torcedo, Jojit Camama

2009-01-01T23:59:59.000Z

107

Frameless, time domain continuous image capture  

E-Print Network [OSTI]

control circuitry, passivation layer ­ Deposit solar cell film on top connecting to circuitry via diode) of scenes Linearity of sensel charge accumulation ­ Noise issues with low charge ­ Saturation;Sensel Design Individual sensels need different integration periods for different photon arrival rates

Dietz, Henry G. "Hank"

108

Time-Domain Electromagnetics | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-gTaguspark JumpDetective JumpInc., 2010)PtyO'reilly

109

MEASUREMENT OF THE SHOCK-HEATED MELT CURVE OF LEAD USING PYROMETRY AND REFLECTOMETRY  

SciTech Connect (OSTI)

Data on the high-pressure melting temperatures of metals is of great interest in several fields of physics including geophysics. Measuring melt curves is difficult but can be performed in static experiments (with laser-heated diamond-anvil cells for instance) or dynamically (i.e., using shock experiments). However, at the present time, both experimental and theoretical results for the melt curve of lead are at too much variance to be considered definitive. As a result, we decided to perform a series of shock experiments designed to provide a measurement of the melt curve of lead up to about 50 GPa in pressure. At the same time, we developed and fielded a new reflectivity diagnostic, using it to make measurements on tin. The results show that the melt curve of lead is somewhat higher than the one previously obtained with static compression and heating techniques.

D. Partouche-Sebban and J. L. Pelissier, Commissariat a` l'Energie Atomique,; F. G. Abeyta, Los Alamos National Laboratory; W. W. Anderson, Los Alamos National Laboratory; M. E. Byers, Los Alamos National Laboratory; D. Dennis-Koller, Los Alamos National Laboratory; J. S. Esparza, Los Alamos National Laboratory; S. D. Borror, Bechtel Nevada; C. A. Kruschwitz, Bechtel Nevada

2004-01-01T23:59:59.000Z

110

Eminent Domain Rights (Florida)  

Broader source: Energy.gov [DOE]

Developers of certain facilities, including dams to be used for hydropower, natural gas companies, wastewater systems, and coal pipelines, may be eligible to exercise eminent domain powers in...

111

Model approach to solving the inverse problem of X-ray reflectometry and its application to the study of the internal structure of hafnium oxide films  

SciTech Connect (OSTI)

The key features of the inverse problem of X-ray reflectometry (i.e., the reconstruction of the depth profile of the dielectric constant using an experimental angular dependence of reflectivity) are discussed and essential factors leading to the ambiguity of its solution are analyzed. A simple approach to studying the internal structure of HfO{sub 2} films, which is based on the application of a physically reasonable model, is considered. The principles for constructing a film model and the criteria for choosing a minimal number of fitting parameters are discussed. It is shown that the ambiguity of the solution to the inverse problem is retained even for the simplest single-film models. Approaches allowing one to pick out the most realistic solution from several variants are discussed.

Volkov, Yu. O., E-mail: neko.crys@gmail.com; Kozhevnikov, I. V.; Roshchin, B. S. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Filatova, E. O. [St. Petersburg State University, Fock Institute of Physics (Russian Federation)] [St. Petersburg State University, Fock Institute of Physics (Russian Federation); Asadchikov, V. E. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

2013-01-15T23:59:59.000Z

112

One Work Analysis, Two Domains: A Display Information Requirements Case Study  

E-Print Network [OSTI]

Work domain analyses can be time consuming, requiring extensive interviews, documentation review, and observations, among other techniques. Given the time and resources required, we examine how to generalize a work domain ...

Cummings, M. L.

113

Wafer characteristics via reflectometry  

DOE Patents [OSTI]

Various exemplary methods (800, 900, 1000, 1100) are directed to determining wafer thickness and/or wafer surface characteristics. An exemplary method (900) includes measuring reflectance of a wafer and comparing the measured reflectance to a calculated reflectance or a reflectance stored in a database. Another exemplary method (800) includes positioning a wafer on a reflecting support to extend a reflectance range. An exemplary device (200) has an input (210), analysis modules (222-228) and optionally a database (230). Various exemplary reflectometer chambers (1300, 1400) include radiation sources positioned at a first altitudinal angle (1308, 1408) and at a second altitudinal angle (1312, 1412). An exemplary method includes selecting radiation sources positioned at various altitudinal angles. An exemplary element (1650, 1850) includes a first aperture (1654, 1854) and a second aperture (1658, 1858) that can transmit reflected radiation to a fiber and an imager, respectfully.

Sopori, Bhushan L. (Denver, CO)

2010-10-19T23:59:59.000Z

114

Cellulose binding domain proteins  

DOE Patents [OSTI]

A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production thereof. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques.

Shoseyov, Oded (Karmey Yosef, IL); Shpiegl, Itai (Rehovot, IL); Goldstein, Marc (Davis, CA); Doi, Roy (Davis, CA)

1998-01-01T23:59:59.000Z

115

Cellulose binding domain proteins  

DOE Patents [OSTI]

A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques. 16 figs.

Shoseyov, O.; Shpiegl, I.; Goldstein, M.; Doi, R.

1998-11-17T23:59:59.000Z

116

Modulation-domain Kalman filtering for single-channel speech enhancement  

E-Print Network [OSTI]

Modulation-domain Kalman filtering for single-channel speech enhancement Stephen So , Kuldip K-term correlation speech information in the time domain. As a result, the MDKF method produces enhanced speech speech parameters) outperforms all the acoustic and time-domain enhancement methods that were evaluated

117

One Work Analysis, Two Domains: A Display Information Requirements Case Study  

E-Print Network [OSTI]

d observations, among other techniques. Given the time and resources required, we examine how to generalize a work domain analysis technique, namely the hybrid Cognitive Task Analysis (hCTA) method across two domains in ...

Cummings, M. L.

2012-01-01T23:59:59.000Z

118

Enhancement of disoriented chiral condensate domains with friction  

E-Print Network [OSTI]

We investigate the effect of friction on domain formation in disoriented chiral condensate. Including a friction term, we solve the equation of motion of the linear sigma model fields, in the Hartree approximation. With boost-invariance and cylinderical symmetry, irrespective of friction, on average, we donot find any indication of domain like formation with quenched initial condition. However, with or without friction, some events can be found with large instabilities, indicating possible DCC domain formation in those events. With friction time scale during which instabilities grows increases. Correspondingly, with friction, it is possible to obtain large sized domains in some particular events.

A. K. Chaudhuri

1999-04-08T23:59:59.000Z

119

Analysis and separation of time-frequency components in signals with chaotic behavior  

E-Print Network [OSTI]

The analysis of chaotic signals with time-frequency methods is considered. For this purpose, two new transformations are presented which consist in the decomposition of a signal onto an orthogonal set of respectively linear and hyperbolic chirps. The linear chirp transformation is able to discriminate and extract particular chaotic components in non-stationary square integrable signals. This is demonstrated in an example studying the reflectometry measures of a turbulent plasma. The hyperbolic chirp transformation is designed for the detection and extraction of chaotic parts in self-similar processes such as stochastic motions. Mathematical connections are made between these two methods and other well-known transformations.

Benjamin Ricaud; Francoise Briolle; F. Clairet

2010-05-31T23:59:59.000Z

120

antiferromagnetic domain fluctuations: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to the order parameter characterizing this process. R. Botet; M. Ploszajczak; A. Chbihi; B. Borderie; D. Durand; J. Frankland 2001-01-30 22 Time-Domain Detection of Weakly Coupled...

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Fractal analysis of time varying data  

DOE Patents [OSTI]

Characteristics of time varying data, such as an electrical signal, are analyzed by converting the data from a temporal domain into a spatial domain pattern. Fractal analysis is performed on the spatial domain pattern, thereby producing a fractal dimension D.sub.F. The fractal dimension indicates the regularity of the time varying data.

Vo-Dinh, Tuan (Knoxville, TN); Sadana, Ajit (Oxford, MS)

2002-01-01T23:59:59.000Z

122

BAYESIAN SINGLE CHANNEL SPEECH ENHANCEMENT EXPLOITING SPARSENESS IN THE ICA DOMAIN  

E-Print Network [OSTI]

BAYESIAN SINGLE CHANNEL SPEECH ENHANCEMENT EXPLOITING SPARSENESS IN THE ICA DOMAIN Liang Hong We propose a Bayesian single channel speech enhance- ment algorithm to exploit speech sparseness, further used to estimate enhanced speech in the time domain, and (2) ICA domain transformation of data

Maryland at College Park, University of

123

Identification of new functions for BRCT domains  

E-Print Network [OSTI]

Our lab identified the tandem BRCT domains of PTIP function as a DNA damage responsive phospho binding domain that recognizes proteins phosphorylated by ATM and ATR after DNA damage. The PTIP tandem BRCT domains are ...

Mohammad, Duaa H

2008-01-01T23:59:59.000Z

124

Collaborative Networks for Biodiversity Domain Organizations  

E-Print Network [OSTI]

, conservation groups, etc., referred to in this paper as BOs (Biodiversity-domain OrganizationsCollaborative Networks for Biodiversity Domain Organizations Ekaterina Ermilova, Hamideh, operating in the domains of biology, ecology, and biodiversity, strongly need to cooperate

Boyer, Edmond

125

Persistent conductive footprints of 109° domain walls in bismuth ferrite films  

SciTech Connect (OSTI)

Using conductive and piezoforce microscopy, we reveal a complex picture of electronic transport at weakly conductive 109° domain walls in bismuth ferrite films. Even once initial ferroelectric stripe domains are changed/erased, persistent conductive paths signal the original domain wall position. The conduction at such domain wall “footprints” is activated by domain movement and decays rapidly with time, but can be re-activated by opposite polarity voltage. The observed phenomena represent true leakage conduction rather than merely displacement currents. We propose a scenario of hopping transport in combination with thermionic injection over interfacial barriers controlled by the ferroelectric polarization.

Stolichnov, I.; Iwanowska, M.; Colla, E.; Setter, N. [Ceramics Laboratory, EPFL-Swiss Federal Institute of Technology, Lausanne 1015 (Switzerland); Ziegler, B.; Gaponenko, I.; Paruch, P. [DPMC-MaNEP, University of Geneva, 24 Quai Ernest Ansermet, 1211 Geneva 4 (Switzerland); Huijben, M.; Rijnders, G. [Faculty of Science and Technology and MESA Institute for Nanotechnology, University of Twente, 7500 AE Enschede (Netherlands)

2014-03-31T23:59:59.000Z

126

Determination of preferential molecular orientation in porphyrin-fullerene dyad ZnDHD6ee monolayers by the X-ray standing-wave method and X-ray reflectometry  

SciTech Connect (OSTI)

Monolayers of porphyrin-fullerene dyad molecules with zinc atoms incorporated into the porphyrin ring (ZnDHD6ee) on the surface of aqueous subphase and on Si substrates have been investigated by the X-ray standing-wave method and X-ray reflectometry. The experiments have been performed under laboratory conditions and on synchrotron radiation sources (KMC-2 station of BESSY II (Berlin) and Langmuir station at the National Research Centre 'Kurchatov Institute'). Depth distributions of Zn atoms and electron density in the monolayer film are calculated. On the basis of the analysis of these distributions, it is concluded that ZnDHD6ee dyad molecules in monolayers have preferential orientation. The data obtained indicate that the molecules in monolayer film retain their orientation when the monolayer is transferred from a liquid subphase surface onto a solid substrate.

Seregin, A. Yu., E-mail: seregin@gmail.com; D'yakova, Yu. A.; Yakunin, S. N.; Makhotkin, I. A. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Alekseev, A. S. [Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)] [Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation); Klechkovskaya, V. V.; Tereschenko, E. Yu. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Tkachenko, N. V.; Lemmetyinen, H. [Tampere University of Technology (Finland)] [Tampere University of Technology (Finland); Feigin, L. A.; Kovalchuk, M. V. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

2013-11-15T23:59:59.000Z

127

A comparison of marine time-domain and frequency-domain controlled source electromagnetic methods  

E-Print Network [OSTI]

Kerry Key, Chair Steven Constable Glenn Ierley c Dylan Markalso like to thank Dr. Steven Constable for the opportunity

Connell, Dylan

2011-01-01T23:59:59.000Z

128

Cellulose binding domain fusion proteins  

DOE Patents [OSTI]

A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production thereof. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques.

Shoseyov, Oded (Karmey Yosef, IL); Shpiegl, Itai (Rehovot, IL); Goldstein, Marc A. (Davis, CA); Doi, Roy H. (Davis, CA)

1998-01-01T23:59:59.000Z

129

Cellulose binding domain fusion proteins  

DOE Patents [OSTI]

A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques. 16 figs.

Shoseyov, O.; Yosef, K.; Shpiegl, I.; Goldstein, M.A.; Doi, R.H.

1998-02-17T23:59:59.000Z

130

Parallel Algorithms for Time and Frequency Domain Circuit Simulation  

E-Print Network [OSTI]

solution to circuit simulation besides the known application of distributed-memory clustered computing platforms, which provides abundant hardware computing resources. This research addresses the limitations of traditional serial circuit simulations...

Dong, Wei

2010-10-12T23:59:59.000Z

131

Time-Domain Electromagnetics At Glass Mountain Area (Cumming...  

Open Energy Info (EERE)

Activity Date Usefulness useful DOE-funding Unknown References William Cumming, Randall Mackie (2007) 3D Mt Resistivity Imaging For Geothermal Resource Assessment And...

132

TIME DOMAIN VOCAL TRACT LENGTH NORMALIZATION David Sundermann, Antonio Bonafonte  

E-Print Network [OSTI]

Science Department Ahornstr. 55, 52056 Aachen, Germany ney@cs.rwth-aachen.de Harald H¨oge Siemens AG Corporate Technology Otto-Hahn-Ring 6, 81739 Munich, Germany harald.hoege@siemens.com ABSTRACT Recently (mapping of several speakers to a certain individual) but the other direction (transforming a standard

Suendermann, David

133

A VECTOR FINITE ELEMENT TIME-DOMAIN METHOD FOR ...  

E-Print Network [OSTI]

and to conserve energy and charge for arbitrary hexahedral grids. ... experiments are performed to determine the accuracy and efficiency of the method.

SIAM (#1) 1035 2001 Apr 10 12:32:38

2001-08-14T23:59:59.000Z

134

Fast time domain simulation for large order hybrid systems  

E-Print Network [OSTI]

Simulation is an important tool for the analysis and design of complex systems. As the models become more and more complex, more powerful simulation methods are desired. As an attempt to address this problem, a simulation ...

Sou, Kin Cheong, 1979-

2002-01-01T23:59:59.000Z

135

Comparison of the 3 method and time-domain thermoreflectancethermoreflectance  

E-Print Network [OSTI]

advantages and disadvantages 3 · High accuracy, particularly for bulk materials and low thermal conductivity electrical insulation: introduces an additional thermal resistance.additional thermal resistance. ­ Cannot, Shawn Putnam, Yee Kan Koh Materials Research Lab and Department of Materials Science and Engineering, U

Braun, Paul

136

Time Domain Passivity Control of Haptic Interfaces with Virtual Environments  

E-Print Network [OSTI]

Graphics Processor 60Hz Virtual Environment or Model Haptics Processor 1000 Hz Mechanism Power Converter of conservation of energy: ­ "Energy supplied BY the network can never exceed the energy which has been fed TO it" · Mathematical definitions 0,00 0 tEdvf t N v f f v : Force : Velocity Net energy supplied Initial

Ryu, Jee-Hwan

137

Time domain measurement of the THz refractivity of water vapor  

E-Print Network [OSTI]

region," Metrologia 18(2), 49­52 (1982). 7. R. J. Hill and R. S. Lawrence, "Refractive index of water

Oklahoma State University

138

Development of Nonlinear SSI Time Domain Methodology | Department of Energy  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergy CooperationRequirements Matrix U.S. Department of|ALDeterminationsDepartmentJon T.(PAN-MA)

139

Category:Time-Domain Electromagnetics | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin: EnergyBostonFacilityCascadeJumpInformationcontainingTerritories of

140

Time-Domain Electromagnetics At Haleakala Volcano Area (Thomas, 1986) |  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County, Oklahoma:Open Energy

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Time-Domain Electromagnetics At Kilauea East Rift Geothermal Area  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County, Oklahoma:Open Energy|

142

Time-Domain Electromagnetics At Long Valley Caldera Geothermal Area  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County, Oklahoma:Open(Nordquist, 1987)

143

SUMTIME: KA For Weather Domain Page 1 of 20  

E-Print Network [OSTI]

News Inc, Aberdeen, UK) and gas turbine diagnosis (in collaboration with Intelligent Applications on a third (yet to be chosen) domain. In the case of gas turbine diagnosis, as is the case with the doctors://www.csd.abdn.ac.in/research/sumtime) is a research project aimed at developing a generic computational model for producing textual summaries of time

Sripada, Yaji

144

Buried fiber optic intrusion sensor  

E-Print Network [OSTI]

to the buried sensor induces a phase shift in light propagating along the fiber which allows for the detection and localization of intrusions. Through the use of an ultra-stable erbium-doped fiber laser and phase sensitive optical time domain reflectometry...

Maier, Eric William

2004-09-30T23:59:59.000Z

145

Magnetic domain walls driven by interfacial phenomena  

E-Print Network [OSTI]

A domain wall in a ferromagnetic material is a boundary between differently magnetized regions, and its motion provides a convenient scheme to control the magnetization state of the material. Domain walls can be confined ...

Emori, Satoru

2014-01-01T23:59:59.000Z

146

Language Modeling for limited-data domains  

E-Print Network [OSTI]

With the increasing focus of speech recognition and natural language processing applications on domains with limited amount of in-domain training data, enhanced system performance often relies on approaches involving model ...

Hsu, Bo-June (Bo-June Paul)

2009-01-01T23:59:59.000Z

147

Frequency domain design of interval controller  

E-Print Network [OSTI]

significant role in the analysis and design of interval systems. Its external properties are also discussed. The image set approach & frequency domain criteria can be used to calculate the IP stability margin. The frequency domain criteria are used...

Park, Wunyong

1993-01-01T23:59:59.000Z

148

Performance Assessment Report Domain CHP System  

E-Print Network [OSTI]

Performance Assessment Report for the Domain CHP System November 2005 By Burns & McDonnell Engineering #12;Domain CHP System Performance Assessment Report for the Packaged Cooling, Heating and Power

Oak Ridge National Laboratory

149

Domain Controlled Architecture A New Approach for Large Scale Software Integrated Automotive Systems  

E-Print Network [OSTI]

Domain Controlled Architecture A New Approach for Large Scale Software Integrated Automotive Scale Software Integration, LSSI, Automotive Real Time, Multi-core, Many-core, Embedded Automo- tive mobility domain. The automotive in- dustry is confronted with a rising system complexity and several

KĂĽhnhauser, Winfried

150

hal-00136662,version1-14Mar2007 Relational Abstract Domains for the  

E-Print Network [OSTI]

generic. 2 Related Work Abstract Domains. A key component in Abstract-Interpretation-based anal- yseshal-00136662,version1-14Mar2007 Relational Abstract Domains for the Detection of Floating-Point Run-Time Errors Antoine Min´e DI-´Ecole Normale Sup´erieure de Paris, France, mine@di.ens.fr Abstract We present

Paris-Sud XI, Université de

151

DOMAIN DECOMPOSITION FOR A MIXED FINITE ELEMENT ...  

E-Print Network [OSTI]

... porous media, where highly discontinuous conductivity coefficients are also ...... [14] B. Smith, P. Bjřrstad, and W. Gropp, Domain Decomposition, Cambridge

SIAM (#1) 1035 2001 Apr 10 12:32:38

2003-03-12T23:59:59.000Z

152

Magnetic domains were not found in tetrataenite.  

E-Print Network [OSTI]

collaboration with electrical engineers to produce the proper magnetic tape to view domains in. Observing and Industrial Engineering, University of Massachusetts, Amherst, MA 01003 Future Work While the magnetism· Magnetic domains were not found in tetrataenite. · Figure 4 shows magnetic domains found

Mountziaris, T. J.

153

Labelling Heuristics for CSP Application Domains  

E-Print Network [OSTI]

Labelling Heuristics for CSP Application Domains Zeynep K#16;z#16;ltan Computer Science Division an application domain as a family of CSP models, so as to exhibit the generic constraint store for all models store and the domain propagation during search is analysed, so as to infer | before modelling any CSP

Rossi, Francesca

154

Building accurate initial models using gain functions for waveform inversion in the Laplace domain  

E-Print Network [OSTI]

We suggest an initial model building technique using time gain functions in the Laplace domain. Applying the gain expressed as a power of time is equivalent to taking the partial derivative of the Laplace-domain wavefield with respect to a damping constant. We construct an objective function, which minimizes the logarithmic differences between the gained field data and the partial derivative of the modeled data with respect to the damping constant. We calculate the modeled wavefield, the partial derivative wavefield, and the gradient direction in the Laplace domain using the analytic Green's function starting from a constant velocity model. This is an efficient method to generate an accurate initial model for a following Laplace-domain inversion. Numerical examples using two marine field datasets confirm that a starting model updated once from a scratch using the gradient direction calculated with the proposed method can be successfully used for a subsequent Laplace-domain inversion.

Wansoo Ha; Changsoo Shin

2014-08-20T23:59:59.000Z

155

Dissipation, noise and DCC domain formation  

E-Print Network [OSTI]

We investigate the effect of friction on domain formation in disoriented chiral condensate. We solve the equation of motion of the linear sigma model, in the Hartree approximation, including a friction and a white noise term. For quenched initial condition, we find that even in presence of noise and dissipation domain like structure emerges after a few fermi of evolution. Domain size as large as 5 fm can be formed.

A. K. Chaudhuri

1999-08-17T23:59:59.000Z

156

Localized domain patterns in complex polymers  

E-Print Network [OSTI]

Localized domain patterns in complex polymers abstract. Block copolymers are macromolecules that can form variety of microstructures as a result of incomplete

157

NATIONAL PLAN TO ACHIEVE MARITIME DOMAIN AWARENESS  

E-Print Network [OSTI]

infrastructure following attack or similar disruption. · Maritime Transportation System Security Plan responds regarding the maritime domain. · Maritime Commerce Security Plan establishes a comprehensive plan to secure

Acton, Scott

158

Petroleum Pipeline Eminent Domain Permit Procedures (Georgia)  

Broader source: Energy.gov [DOE]

The Petroleum Pipeline Eminent Domain Permit Procedures serve to protect Georgia's natural and environmental resources by requiring permits be issued by the Director of the Environmental Protection...

159

Observational Constraints on Varying-alpha Domain Walls  

E-Print Network [OSTI]

We consider the possibility that current hints of a spatial variation of the fine structure constant at high redshift could be due to a biased domain wall network described by a scalar field non-minimally coupled to the electromagnetic field. We show that in order to be cause of the reported spatial variation of the fine structure constant without being in conflict with the observed anisotropies of the cosmic microwave background, the characteristic scale of the network would have to be of the order of the Hubble radius and the fractional contribution of the domain wall network to the energy density of the Universe would need to be in the range $10^{-10} temperature distribution of the cosmic microwave background detected by Planck and WMAP and provide a significant contribution to the excess B-mode polarisation power detected by BICEP2. Since the domain wall contribution to the cosmic energy budget only becomes important at late times, domain wall networks cannot play a significant role as a seed for large scale structure formation and primary cosmic microwave background anisotropies.

P. P. Avelino; L. Sousa

2014-06-20T23:59:59.000Z

160

DefectDomain Wall Interactions in Trigonal  

E-Print Network [OSTI]

Defect­Domain Wall Interactions in Trigonal Ferroelectrics Venkatraman Gopalan,1 Volkmar Dierolf,2 walls in the trigonal ferroelectrics lithium niobate and lithium tantalate. It is shown that extrinsic questions re- garding intrinsic widths, defect­domain wall interactions, and static versus dynamic wall

Gopalan, Venkatraman

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

A Theoretical Framework for Chimera Domain Decomposition  

E-Print Network [OSTI]

A Theoretical Framework for Chimera Domain Decomposition S. L. Keeling Sverdrup Technology, Inc. Steger, UC Davis, May 2-4, 1997. 1 Introduction. The Chimera scheme is a domain decomposition method- ometry is divided into simply shaped regions. Unlike other approaches [5], the Chimera method simplifies

Keeling, Stephen L.

162

The Abstract Domain of Segmented Ranking Functions  

E-Print Network [OSTI]

function by abstract in- terpretation. We build our work on their proposed general framework, and we designThe Abstract Domain of Segmented Ranking Functions Caterina Urban ´Ecole Normale Sup´erieure - CNRS - INRIA, Paris, France urban@di.ens.fr Abstract. We present a parameterized abstract domain for proving

Paris-Sud XI, Université de

163

Reasoning with Concrete Domains Carsten Lutz  

E-Print Network [OSTI]

Reasoning with Concrete Domains Carsten Lutz RWTH Aachen, LuFg Theoretical Computer Science. Concrete domains allow the integration of description logic reasoning with reasoning about concrete objects for building real­world applications, is widely accepted. How­ ever, the complexity of reasoning with concrete

Lutz, Carsten

164

Discrete-Time Dataflow Models for Visual Simulation in Ptolemy II  

E-Print Network [OSTI]

in Ptolemy II is a timed extension of the Synchronous Dataflow (SDF) domain. Although not completely backward compatible with SDF, DT keeps most of the desirable properties of SDF like static scheduling, regular in Ptolemy II 3.2 Synchronous Dataflow (SDF) Domain 3.3 Discrete Event (DE) Domain 3.4 Continuous Time (CT

165

Learning Energy Demand Domain Knowledge via Feature Transformation  

E-Print Network [OSTI]

Learning Energy Demand Domain Knowledge via Feature Transformation Sanzad Siddique Department -- Domain knowledge is an essential factor for forecasting energy demand. This paper introduces a method knowledge substantially improves energy demand forecasting accuracy. However, domain knowledge may differ

Povinelli, Richard J.

166

Antiferromagnetic domain size and exchange bias  

E-Print Network [OSTI]

Using neutron diffraction, we measured the sizes of antiferromagnetic domains in three ferromagnet/antiferromagnet bilayer samples as a function of the magnitude and sign of exchange bias, temperature, and antiferromagnet composition. Neutron...

Fitzsimmons, M. R.; Lederman, D.; Cheon, M.; Shi, H.; Olamit, J.; Roshchin, Igor V.; Schuller, Ivan K.

2008-01-01T23:59:59.000Z

167

Magnetically multiplexed heating of single domain nanoparticles  

E-Print Network [OSTI]

Selective hysteretic heating of multiple collocated types of single domain magnetic nanoparticles (SDMNPs) by alternating magnetic fields (AMFs) may offer a useful tool for biomedical applications. The possibility of ...

Romero, G.

168

Slow Dynamics of Orbital Domains in Manganite  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Slow Dynamics of Orbital Domains in Manganite Print At the ALS, an international team of researchers has used low-energy coherent x rays to extract new knowledge about the...

169

Building Noetherian and non-Noetherian integral domains using ...  

E-Print Network [OSTI]

valuation domain birationally dominating R, .... discrete valuation domain (DVR) and it is well-known that the completion of R .... two methods for the construction.

2013-06-30T23:59:59.000Z

170

Biophysical characterization of p53 regulatory domain and MDM2  

E-Print Network [OSTI]

Sw Sedimentation Coefficient TAD Transactivation Domain TEMwith a short peptide of p53 TAD was solved (Kussie et al. ,transactivation domain (TAD) is phosphorylated by several

Cheung, Nikki Hoi Ling

2010-01-01T23:59:59.000Z

171

Scott Domain Representability of a Class of Generalized Ordered Spaces  

E-Print Network [OSTI]

-space constructed on a locally compact LOTS, is Scott-domain representable, i.e., is homeomorphic to the space-domain representable (i.e., being homeomorphic to the subspace of maximal elements of a Scott-domain with the ScottScott Domain Representability of a Class of Generalized Ordered Spaces Kevin W. Duke and David

Lutzer, David J.

172

Formal Domain Modeling: From Specification to Atif Mashkoor  

E-Print Network [OSTI]

Formal Domain Modeling: From Specification to Validation Atif Mashkoor LORIA ­ DEDALE Team ­ Nancy with re- finement based approach at domain level. We also introduce a stepwise validation process and their inter-relationships, along with their important static and dynamic properties of the domain. The domain

Paris-Sud XI, Université de

173

Thermodynamics of free Domain Wall fermions  

E-Print Network [OSTI]

Studying various thermodynamic quantities for the free domain wall fermions for both finite and infinite fifth dimensional extent N_5, we find that the lattice corrections are minimum for $N_T\\geq10$ for both energy density and susceptibility, for its irrelevant parameter M in the range 1.45-1.50. The correction terms are, however, quite large for small lattice sizes of $N_T\\leq8$. We propose modifications of the domain wall operator, as well as the overlap operator, to reduce the finite cut-off effects to within 10% of the continuum results of the thermodynamic quantities for the currently used N_T=6-8 lattices. Incorporating chemical potential, we show that \\mu^2 divergences are absent for a large class of such domain wall fermion actions although the chiral symmetry is broken for $\\mu\

R. V. Gavai; Sayantan Sharma

2008-11-19T23:59:59.000Z

174

Standing gravitational waves from domain walls  

SciTech Connect (OSTI)

We construct a plane symmetric, standing gravitational wave for a domain wall plus a massless scalar field. The scalar field can be associated with a fluid which has the properties of 'stiff' matter, i.e., matter in which the speed of sound equals the speed of light. Although domain walls are observationally ruled out in the present era, the solution has interesting features which might shed light on the character of exact nonlinear wave solutions to Einstein's equations. Additionally this solution may act as a template for higher dimensional 'brane-world' model standing waves.

Gogberashvili, Merab [Andronikashvili Institute of Physics, 6 Tamarashvili Street, Tbilisi 0177 (Georgia); Javakhishvili Tbilisi State University, 3 Chavchavadze Avenue, Tbilisi 0128 (Georgia); California State University, Fresno, Physics Department, Fresno, California 93740-8031 (United States); Myrzakul, Shynaray [Department of General and Theoretical Physics, Gumilev Eurasian National University, Astana, 010008 (Kazakhstan); California State University, Fresno, Physics Department, Fresno, California 93740-8031 (United States); Singleton, Douglas [California State University, Fresno, Physics Department, Fresno, California 93740-8031 (United States); Institute of Gravitation and Cosmology, Peoples' Friendship University of Russia, Moscow 117198 (Russian Federation)

2009-07-15T23:59:59.000Z

175

Pulsational instability domain of Delta Scuti variables  

E-Print Network [OSTI]

An updated theoretical instability domain of the Delta Scuti star models in the Hertzsprung-Russell diagram, in the log g - log Teff diagram and in diagrams for dereddened uvby-beta photometric indices is presented. The sensitivity of both the position of the evolutionary tracks and the Blue Edge of the instability domain to changes in the chemical composition parameters (X, Z) and to changes in the convection theory parameters (mixing-length in the stellar envelope, the extent of the overshooting from the convective core) is discussed.

A. A. Pamyatnykh

2000-05-12T23:59:59.000Z

176

The Value of the EU Public Domain  

E-Print Network [OSTI]

is as natural and necessary part of our research efforts as the study of copyright.1 1 Mead Fellow in Economics, Emmanuel College, University of Cambridge 2 Erasmus University Rotterdam and Austrian Society for Cultural Economics and Policy Studies 3 Adjunct... proximate but already public domain works. 30We can add and remove mass because the set of in-print public domain and in copyright books do not necessarily match. 31If one considers this over-generous it is worth considering that the various different Harry...

Pollock, Rufus; Stepan, Paul; Välimäki, Mikko

177

Assessment of current cybersecurity practices in the public domain : cyber indications and warnings domain.  

SciTech Connect (OSTI)

This report assesses current public domain cyber security practices with respect to cyber indications and warnings. It describes cybersecurity industry and government activities, including cybersecurity tools, methods, practices, and international and government-wide initiatives known to be impacting current practice. Of particular note are the U.S. Government's Trusted Internet Connection (TIC) and 'Einstein' programs, which are serving to consolidate the Government's internet access points and to provide some capability to monitor and mitigate cyber attacks. Next, this report catalogs activities undertaken by various industry and government entities. In addition, it assesses the benchmarks of HPC capability and other HPC attributes that may lend themselves to assist in the solution of this problem. This report draws few conclusions, as it is intended to assess current practice in preparation for future work, however, no explicit references to HPC usage for the purpose of analyzing cyber infrastructure in near-real-time were found in the current practice. This report and a related SAND2010-4766 National Cyber Defense High Performance Computing and Analysis: Concepts, Planning and Roadmap report are intended to provoke discussion throughout a broad audience about developing a cohesive HPC centric solution to wide-area cybersecurity problems.

Hamlet, Jason R.; Keliiaa, Curtis M.

2010-09-01T23:59:59.000Z

178

Nucleic acids encoding a cellulose binding domain  

DOE Patents [OSTI]

A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production thereof. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques.

Shoseyov, Oded (Karmey Yosef, IL); Shpiegl, Itai (Rehovot, IL); Goldstein, Marc A. (Davis, CA); Doi, Roy H. (Davis, CA)

1996-01-01T23:59:59.000Z

179

Nucleic acids encoding a cellulose binding domain  

DOE Patents [OSTI]

A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques. 15 figs.

Shoseyov, O.; Shpiegl, I.; Goldstein, M.A.; Doi, R.H.

1996-03-05T23:59:59.000Z

180

Competency Patient Care Sub Domain Procedures  

E-Print Network [OSTI]

Competency Patient Care Sub Domain Procedures Learning Objective Understands informed consent and performs uncomplicated procedures on patients or in simulation Milestones Year I Year II Year III Year IV Mid End Mid End Mid End Mid End · Defines elements of informed consent for procedures · Explains

Leistikow, Bruce N.

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Domain wall partition functions and KP  

E-Print Network [OSTI]

We observe that the partition function of the six vertex model on a finite square lattice with domain wall boundary conditions is (a restriction of) a KP tau function and express it as an expectation value of charged free fermions (up to an overall normalization).

O Foda; M Wheeler; M Zuparic

2009-01-15T23:59:59.000Z

182

A REAL-TIME AUTONOMOUS NAVIGATION ARCHITECTURE  

E-Print Network [OSTI]

A REAL-TIME AUTONOMOUS NAVIGATION ARCHITECTURE Gang Chen, Thierry Fraichard and Luis Martinez for autonomous navigation: perception, localisation, mapping, real-time motion planning and motion tracking. INTRODUCTION Autonomous navigation requires to solve a num- ber of challenging problems in domains as dif

Paris-Sud XI, Université de

183

Empirical Distributions of DFT-Domain Speech Coefficients Based on Estimated Speech Variances  

E-Print Network [OSTI]

obtained from a short-time discrete Fourier transform (DFT) in the context of speech enhancement frameworks. The distribution of clean speech spectral coefficients is of great importance for speech enhancement algorithmsEmpirical Distributions of DFT-Domain Speech Coefficients Based on Estimated Speech Variances Timo

184

A Cartesian grid embedded boundary method for the heat equation on irregular domains  

E-Print Network [OSTI]

A Cartesian Grid Embedded Boundary Method for the Heatheat equation on irregular time-dependent domains. It is based on the Cartesian gridHEAT EQUATION FOR FIXED BOUNDARIES Spatial discretization The underlying discretization of space is given by rectangular control volumes on a Cartesian grid:

McCorquodale, Peter; Colella, Phillip; Johansen, Hans

2001-01-01T23:59:59.000Z

185

Note: Vector reflectometry in a beam waveguide  

SciTech Connect (OSTI)

We present a one-port calibration technique for characterization of beam waveguide components with a vector network analyzer. This technique involves using a set of known delays to separate the responses of the instrument and the device under test. We demonstrate this technique by measuring the reflected performance of a millimeter-wave variable-delay polarization modulator.

Eimer, J. R.; Bennett, C. L. [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218 (United States); Chuss, D. T.; Wollack, E. J. [NASA Goddard Space Flight Center, Code 665, Greenbelt, Maryland 20771 (United States)

2011-08-15T23:59:59.000Z

186

Budding of domains in mixed bilayer membranes  

E-Print Network [OSTI]

We propose a model that accounts for budding behavior of domains in lipid bilayers, where each of the bilayer leaflets has a coupling between its local curvature and local lipid composition. The compositional asymmetry between the two monolayers leads to an overall spontaneous curvature. The membrane free-energy contains three contributions: bending energy, line tension, and a Landau free-energy for a lateral phase separation. Within a mean-field treatment, we obtain various phase diagrams which contain fully-budded, dimpled and flat states. In particular, for some range of membrane parameters, the phase diagrams exhibit a tricritical behavior as well as three-phase coexistence region. The global phase diagrams can be divided into three types and are analyzed in terms of the curvature-composition coupling parameter and domain size.

Jean Wolff; Shigeyuki Komura; David Andelman

2015-01-10T23:59:59.000Z

187

Fluctuation induced interactions between domains in membranes  

E-Print Network [OSTI]

We study a model lipid bilayer composed of a mixture of two incompatible lipid types which have a natural tendency to segregate in the absence of membrane fluctuations. The membrane is mechanically characterized by a local bending rigidity $\\kappa(\\phi)$ which varies with the average local lipid composition $\\phi$. We show, in the case where $\\kappa$ varies weakly with $\\phi$, that the effective interaction between lipids of the same type can either be everywhere attractive or can have a repulsive component at intermediate distances greater than the typical lipid size. When this interaction has a repulsive component, it can prevent macro-phase separation and lead to separation in mesophases with a finite domain size. This effect could be relevant to certain experimental and numerical observations of mesoscopic domains in such systems.

D. S. Dean; M. Manghi

2006-09-06T23:59:59.000Z

188

Budding of domains in mixed bilayer membranes  

E-Print Network [OSTI]

We propose a model that accounts for budding behavior of domains in lipid bilayers, where each of the bilayer leaflets has a coupling between its local curvature and local lipid composition. The compositional asymmetry between the two monolayers leads to an overall spontaneous curvature. The membrane free-energy contains three contributions: bending energy, line tension, and a Landau free-energy for a lateral phase separation. Within a mean-field treatment, we obtain various phase diagrams which contain fully-budded, dimpled and flat states. In particular, for some range of membrane parameters, the phase diagrams exhibit a tricritical behavior as well as three-phase coexistence region. The global phase diagrams can be divided into three types and are analyzed in terms of the curvature-composition coupling parameter and domain size.

Jean Wolff; Shigeyuki Komura; David Andelman

2014-10-14T23:59:59.000Z

189

Conserved currents for Mobius Domain Wall Fermions  

E-Print Network [OSTI]

We derive the exactly conserved vector, and almost conserved axial currents for rational approximations to the overlap operator with a general Mobius kernel. The approach maintains manifest Hermiticity, and allows matrix elements of the currents to be constructed at no extra cost after solution of the usual 5d system of equations, similar to the original approach of Furman and Shamir for domain wall Fermions.

P. A. Boyle

2014-11-20T23:59:59.000Z

190

Smart Grid Conceptual Actors/Data Flow Diagram- Cross Domain...  

Broader source: Energy.gov (indexed) [DOE]

Smart Grid Conceptual ActorsData Flow Diagram- Cross Domain Network Focued- Open SGSG-Network TF Smart Grid Conceptual ActorsData Flow Diagram- Cross Domain Network Focued- Open...

191

Electrical signature of magnetic domain-wall dynamics  

E-Print Network [OSTI]

Current-induced domain-wall dynamics is studied in a thin ferromagnetic nanowire. The domain-wall dynamics is described by simple equations with four parameters. We propose a procedure to unambiguously determine these parameters by all...

Liu, Y.; Tretiakov, O. A.; Abanov, Artem.

2011-01-01T23:59:59.000Z

192

Visulization of Time-Varying Multiresolution Date Using Error-Based Temporal-Spatial Resuse  

SciTech Connect (OSTI)

In this paper, we report results on exploration of two-dimensional (2D) time varying datasets. We extend the notion of multiresolution spatial data approximation of static datasets to spatio-temporal approximation of time-varying datasets. Time-varying datasets typically do not change ''uniformly,'' i.e., some spatial sub-domains can experience only little or no change for extended periods of time. In these sub-domains, we show that approximation error bounds can be met when using sub-domains from other time-steps effectively. We generate a more general approximation scheme where sub-domains may approximate congruent sub-domains from any other time steps. While this incurs an O(T2) overhead, where T is the total number of time-steps, we show significant reduction in data transmission. We also discuss ideas for improvements to reduce overhead.

Nuber, C; LaMar, E; Hamann, B; Joy, K

2002-04-22T23:59:59.000Z

193

Entropic Time  

SciTech Connect (OSTI)

The formulation of quantum mechanics within the framework of entropic dynamics includes several new elements. In this paper we concentrate on one of them: the implications for the theory of time. Entropic time is introduced as a book-keeping device to keep track of the accumulation of changes. One new feature is that, unlike other concepts of time appearing in the so-called fundamental laws of physics, entropic time incorporates a natural distinction between past and future.

Caticha, Ariel [Department of Physics, University at Albany-SUNY, Albany, NY 12222 (United States)

2011-03-14T23:59:59.000Z

194

The Task Agent Resource Function application in UAV domain  

E-Print Network [OSTI]

The Task Agent Resource Function application in UAV domain Tan Viet Anh Truong Ecole National is to present an application of TARF (Task Agent Resource Function) in UAV domain. This TARF is used to optimize of a generic mission planner for cross domain such as UAV, maritime, automotive and manned aerial vehicle (MAV

Paris-Sud XI, Université de

195

Grammar-Based Testing using Realistic Domains in PHP  

E-Print Network [OSTI]

Grammar-Based Testing using Realistic Domains in PHP Ivan Enderlin, Fr´ed´eric Dadeau, Alain-based testing in PHP. It relies on the notion of realistic domains, that make it possible to assign domains to data, by means of contract assertions written inside the source code of a PHP application. Then a test

Paris-Sud XI, Université de

196

WELL-CENTERED OVERRINGS OF AN INTEGRAL DOMAIN  

E-Print Network [OSTI]

WELL-CENTERED OVERRINGS OF AN INTEGRAL DOMAIN William Heinzer Department of Mathematics, Purdue of A if and only if B is flat and well-centered over A. If the integral closure of A is a Krull domain in Theorem 3.6 that every finitely generated well-centered over- ring of an integrally closed domain is flat

Heinzer, William

197

The Description Logic ALCN HR+ Extended with Concrete Domains  

E-Print Network [OSTI]

The Description Logic ALCN HR+ Extended with Concrete Domains: A Practically Motivated Approach, role hierarchies, transitively closed roles, generalized concept inclusions, and concrete domains. As in other languages based on concrete domains (e.g. ALC(D)) a so-called ex- istential predicate restriction

Moeller, Ralf

198

Adapting Optimization Techniques to Description Logics with Concrete Domains  

E-Print Network [OSTI]

Adapting Optimization Techniques to Description Logics with Concrete Domains Anni-Yasmin Turhan backtracking and model merging can be adapted to description logics with concrete domains. We propose al) a new requirement for concrete domains in order to enable dependency directed backtracking for all clash

Haarslev, Volker

199

The Description Logic ALCNHR + Extended with Concrete Domains  

E-Print Network [OSTI]

The Description Logic ALCNHR + Extended with Concrete Domains: A Practically Motivated Approach restrictions, role hierarchies, transitively closed roles, generalized concept inclusions, and concrete domains. As in other languages based on concrete domains (e.g. ALC(D)) a so­called ex­ istential predicate restriction

Haarslev, Volker

200

Adapting Optimization Techniques to Description Logics with Concrete Domains  

E-Print Network [OSTI]

Adapting Optimization Techniques to Description Logics with Concrete Domains Anni­Yasmin Turhan backtracking and model merging can be adapted to description logics with concrete domains. We propose al) a new requirement for concrete domains in order to enable dependency directed backtracking for all clash

Haarslev, Volker

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Dynamic coupling between the LID and NMP domain motions in the catalytic conversion of ATP and AMP to ADP by adenylate kinase  

E-Print Network [OSTI]

The catalytic conversion of ATP and AMP to ADP by adenylate kinase (ADK) involves large amplitude, ligand induced domain motions, involving the opening and the closing of LID and NMP domains, during the repeated catalytic cycle. We discover and analyze an interesting dynamical coupling between the motions of the two domains during the opening, using large scale atomistic molecular dynamics trajectory analysis, covariance analysis and multi-dimensional free energy calculations with explicit water. Initially, the LID domain must open by a certain amount before the NMP domain can begin to open. Dynamical correlation map shows interesting cross-peak between LID and NMP domain which suggests the presence of correlated motion between them. This is also reflected in our calculated two dimensional free energy surface contour diagram which has an interesting elliptic shape, revealing a strong correlation between the opening of the LID domain and that of the NMP domain. Our free energy surface of the LID domain motion is rugged due to interaction with water and the signature of ruggedness is evident in the observed RMSD variation and its fluctuation time correlation functions. We develop a correlated dynamical disorder type theoretical model to explain the observed dynamic coupling between the motions of the two domains in ADK. Our model correctly reproduces several features of the cross-correlation observed in simulations.

Biman Jana; Bharat V. Adkar; Rajib Biswas; Biman Bagchi

2010-12-30T23:59:59.000Z

202

Lattice QCD with Domain Decomposition on Intel Xeon Phi Co-Processors  

SciTech Connect (OSTI)

The gap between the cost of moving data and the cost of computing continues to grow, making it ever harder to design iterative solvers on extreme-scale architectures. This problem can be alleviated by alternative algorithms that reduce the amount of data movement. We investigate this in the context of Lattice Quantum Chromodynamics and implement such an alternative solver algorithm, based on domain decomposition, on Intel Xeon Phi co-processor (KNC) clusters. We demonstrate close-to-linear on-chip scaling to all 60 cores of the KNC. With a mix of single- and half-precision the domain-decomposition method sustains 400-500 Gflop/s per chip. Compared to an optimized KNC implementation of a standard solver [1], our full multi-node domain-decomposition solver strong-scales to more nodes and reduces the time-to-solution by a factor of 5.

Heybrock, Simon; Joo, Balint; Kalamkar, Dhiraj D.; Smelyanskiy, Mikhail; Vaidyanathan, Karthikeyan; Wettig, Tilo; Dubey, Pradeep

2014-12-01T23:59:59.000Z

203

Seismic attenuation studies using frequency domain synthetic seismograms  

E-Print Network [OSTI]

of Model 6. Reflection coefficient is z. 0137 in each case. 0 1s varied to show the resulting effect on the notches in the ratio, , 37. Downgo1ng time domain ratios for the first permuta- tion of 11odel 6. (} 1s 30 in each case. Reflection coefficient... 1 = n t, i=n m 1 E = 11 a)~ n, m-1 m-1 ~n, m-1 & Fi i=n n m-1 (A)n, m an, m-1 21 an qm-1 12 22 m-1 11 i=n al 11 12 a21 a22 1 1 z;F; r; 1=n z. F. 2r. I 1 1 1 From the basic matrix equations (6), (7), (8), and (9), the responses Ri...

Butler, Theresa Meade

2012-06-07T23:59:59.000Z

204

14.384 Time Series Analysis, Fall 2008  

E-Print Network [OSTI]

The course provides a survey of the theory and application of time series methods in econometrics. Topics covered will include univariate stationary and non-stationary models, vector autoregressions, frequency domain ...

Schrimpf, Paul

205

DNA binding specificity of the p73 DNA-binding domain  

E-Print Network [OSTI]

TD tetramerization domain TAD transactivation domain vi  transactivation domain (TAD) and the N-terminal truncatedp73 (?Np73) that lacks the TAD and it is therefore

Tse, Pui Wah

2011-01-01T23:59:59.000Z

206

MULTIWAVE TOMOGRAPHY IN A CLOSED DOMAIN: AVERAGED ...  

E-Print Network [OSTI]

Time reversal in its classical form fails for this problem because the waves reflect ... The micrlocal analysis justifying the time reversal however would be much ...

2015-02-03T23:59:59.000Z

207

Cross-domain Paraphrasing For Improving Language Modelling Using Out-of-domain Data  

E-Print Network [OSTI]

Cross-domain Paraphrasing For Improving Language Modelling Using Out-of-domain Data X. Liu, M. J. F. Gales & P. C. Woodland Cambridge University Engineering Dept, Trumpington St., Cambridge, CB2 1PZ U.K. Email: {xl207,mjfg... paraphrase word sequence and weighted by its posterior probability. For a particular n-gram predicting word w i follow- ing history h i , the associated statistics C(h i , w i ) are C(h i , w i ) = ? W ? P (W ? |W)C W ? (h i , w i ) (2) where C W ? (h i , w i...

Liu, X.; Gales, M. J. F.; Woodland, P. C.

2014-01-01T23:59:59.000Z

208

Lattice gas simulations of replicating domains  

SciTech Connect (OSTI)

We use the lattice gas cellular automation (LGCA) developed to simulate a process of pattern-formation recently observed in reaction-diffusion systems. We study the reaction mechanism, which is an extension of the Selkov model for glycolytic oscillations. We are able to reproduce the self-replicating domains observed in this work. We use the LGCA simulation to estimate the smallest length-scale on which this process can occur under conditions encountered in the cell. These estimates are similar to those obtained for Turing patterns in the same setting.

Dawson, S.P.; Hasslacher, B.; Pearson, J.E.

1993-12-31T23:59:59.000Z

209

Boundary Conditions of the Hydro-Cascade Model and Relativistic Kinetic Equations for Finite Domains  

E-Print Network [OSTI]

A detailed analysis of the coupled relativistic kinetic equations for two domains separated by a hypersurface having both space- and time-like parts is presented. Integrating the derived set of transport equations, we obtain the correct system of the hydro+cascade equations to model the relativistic nuclear collision process. Remarkably, the conservation laws on the boundary between domains conserve separately both the incoming and outgoing components of energy, momentum and baryonic charge. Thus, the relativistic kinetic theory generates twice the number of conservation laws compared to traditional hydrodynamics. Our analysis shows that these boundary conditions between domains, the three flux discontinuity, can be satisfied only by a special superposition of two cut-off distribution functions for the ``out'' domain. All these results are applied to the case of the phase transition between quark gluon plasma and hadronic matter. The possible consequences for an improved hydro+cascade description of the relativistic nuclear collisions are discussed. The unique properties of the three flux discontinuity and their effect on the space-time evolution of the transverse expansion are also analyzed. The possible modifications of both transversal radii from pion correlations generated by a correct hydro+cascade approach are discussed.

K. A. Bugaev

2004-01-29T23:59:59.000Z

210

Segmenting Time Series for Weather Forecasting  

E-Print Network [OSTI]

) models is summarised as weather forecast texts. In the domain of gas turbines, sensor data from an operational gas turbine is summarised for the maintenance engineers. More details on SUMTIME have been to develop a generic model for summarisation of time series data. Initially, we have applied standard

Sripada, Yaji

211

High-resolution retinal imaging using adaptive optics and Fourier-domain optical coherence tomography  

DOE Patents [OSTI]

This invention permits retinal images to be acquired at high speed and with unprecedented resolution in three dimensions (4.times.4.times.6 .mu.m). The instrument achieves high lateral resolution by using adaptive optics to correct optical aberrations of the human eye in real time. High axial resolution and high speed are made possible by the use of Fourier-domain optical coherence tomography. Using this system, we have demonstrated the ability to image microscopic blood vessels and the cone photoreceptor mosaic.

Olivier, Scot S. (Livermore, CA); Werner, John S. (Davis, CA); Zawadzki, Robert J. (Sacramento, CA); Laut, Sophie P. (Pasedena, CA); Jones, Steven M. (Livermore, CA)

2010-09-07T23:59:59.000Z

212

$K\\to??$ Decays with Domain Wall Fermions: Lattice Matrix Elements  

E-Print Network [OSTI]

We present a lattice calculation of the $K\\to\\pi$ and $K\\to 0$ matrix elements of the $\\Delta S=1$ effective weak Hamiltonian which can be used to determine $\\epsilon^\\prime/\\epsilon$ and the $\\Delta I=1/2$ rule for $K$ decays in the Standard Model. The matrix elements for $K\\to\\pi\\pi$ decays are related to $K\\to\\pi$ and $K\\to 0$ using lowest order chiral perturbation theory. We also present results for the kaon $B$ parameter, $B_K$. Our quenched domain wall fermion simulation was done at $\\beta=6.0$ ($a^{-1}\\approx 2$ GeV), lattice size $16^3\\times 32\\times 16$, and domain wall height $M_5=1.8$.

T. Blum

2000-11-07T23:59:59.000Z

213

Localization and chiral symmetry in 2+1 flavor domain wall QCD  

SciTech Connect (OSTI)

We present results for the dependence of the residual mass of domain wall fermions (DWF) on the size of the fifth dimension and its relation to the density and localization properties of low-lying eigenvectors of the corresponding hermitian Wilson Dirac operator relevant to simulations of 2+1 flavor domain wall QCD. Using the DBW2 and Iwasaki gauge actions, we generate ensembles of configurations with a $16^3\\times 32$ space-time volume and an extent of 8 in the fifth dimension for the sea quarks. We demonstrate the existence of a regime where the degree of locality, the size of chiral symmetry breaking and the rate of topology change can be acceptable for inverse lattice spacings $a^{-1} \\ge 1.6$ GeV.

David J. Antonio; Kenneth C. Bowler; Peter A. Boyle; Norman H. Christ; Michael A. Clark; Saul D. Cohen; Chris Dawson; Alistair Hart; Balint Joó; Chulwoo Jung; Richard D. Kenway; Shu Li; Meifeng Lin; Robert D. Mawhinney; Christopher M. Maynard; Shigemi Ohta; Robert J. Tweedie; Azusa Yamaguchi

2008-01-01T23:59:59.000Z

214

Abstract Domains of Affine Relations MATT ELDER, University of Wisconsin  

E-Print Network [OSTI]

modulo 2w, for some machine-integer width w). We show that the abstract domains of M¨uller-Olm/Seidl (MOS

Reps, Thomas W.

215

Statistical and Domain Analytics Applied to PV Module Lifetime...  

Broader source: Energy.gov (indexed) [DOE]

Degradation Science Statistical and Domain Analytics Applied to PV Module Lifetime and Degradation Science Presented at the PV Module Reliability Workshop, February 26 - 27...

216

National Geothermal Data System (NGDS) Geothermal Data Domain...  

Open Energy Info (EERE)

Data System (NGDS) Geothermal Data Domain: Assessment of Geothermal Community Data Needs Abstract To satisfy the critical need for geothermal data to advance geothermal energy as...

217

Revisiting the domain model for lithium intercalated graphite  

SciTech Connect (OSTI)

In this Letter, we study the stability of the domain model for lithium intercalated graphite in stages III and II by means of Density Functional Theory and Kinetic Lattice Monte Carlo simulations. We find that the domain model is either thermodynamically or kinetically stable when compared to the standard model in stages III and II. The existence of domains in the intercalation sequence is well supported by recent high resolution transmission electron microscope observations in lithiated graphite. Moreover, we predict that such domain staging sequences leads to a wide range of diffusivity as reported in experiments.

Krishnan, Sridevi; Brenet, Gilles; Caliste, Damien; Genovese, Luigi; Deutsch, Thierry; Pochet, Pascal, E-mail: pascal.pochet@cea.fr [Laboratoire de Simulation Atomistique (L-Sim), SP2M, UMR-E CEA/UJF-Grenoble 1, INAC, Grenoble F-38054 (France)] [Laboratoire de Simulation Atomistique (L-Sim), SP2M, UMR-E CEA/UJF-Grenoble 1, INAC, Grenoble F-38054 (France); Machado-Charry, Eduardo [Laboratoire de Simulation Atomistique (L-Sim), SP2M, UMR-E CEA/UJF-Grenoble 1, INAC, Grenoble F-38054 (France) [Laboratoire de Simulation Atomistique (L-Sim), SP2M, UMR-E CEA/UJF-Grenoble 1, INAC, Grenoble F-38054 (France); Nanosciences Fondation, 23 rue des martyrs, 38000 Grenoble (France)

2013-12-16T23:59:59.000Z

218

apolipoprotein domain derived: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of humans and computers, domain spe- cific APIs contain a considerable amount Ratiu, Daniel 265 www.mdpi.comjournalijms Proteolytic Cleavage of Apolipoprotein E4 as the...

219

Complexity of Dependencies in Bounded Domains, Armstrong Codes, and Generalizations  

E-Print Network [OSTI]

Complexity of Dependencies in Bounded Domains, Armstrong Codes, and Generalizations Yeow Meng Chee University, Singapore email: {ymchee, huizhang, xiandezhang}@ntu.edu.sg Abstract--The study of Armstrong systems, where attributes have bounded domains. A (q, k, n)-Armstrong code is a q-ary code of length n

Chee, Yeow Meng

220

Induction, Domains, Calculi: Strachey's Contributions to ProgrammingLanguage  

E-Print Network [OSTI]

Induction, Domains, Calculi: Strachey's Contributions to Programming­Language Engineering David A's contributions---inductive defini­ tion of semantics, semantic­domain definitions, and calculi for semantic description---are presented, and their consequences on languages research are described. Strachey's impact

Schmidt, David A.

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Stripe Domain-Structures in a Thin Ferromagnetic Film  

E-Print Network [OSTI]

We present a theory of the stripe domain structure in a thin ferromagnetic film with single-ion easy-axis magnetic anisotropy and long-range dipole interactions, for a wide range of temperatures and applied magnetic field. The domains exist...

KASHUBA, AB; Pokrovsky, Valery L.

1993-01-01T23:59:59.000Z

222

Overcoming Dataset Bias: An Unsupervised Domain Adaptation Approach  

E-Print Network [OSTI]

Overcoming Dataset Bias: An Unsupervised Domain Adaptation Approach Boqing Gong Dept. of Computer that recognition datasets are biased. Paying no heed to those biases, learning algorithms often result in classifiers with poor cross- dataset generalization. We are developing domain adaptation techniques to over

Grauman, Kristen

223

ORIGINAL ARTICLE Single ferroelectric-domain photovoltaic switch based  

E-Print Network [OSTI]

ORIGINAL ARTICLE Single ferroelectric-domain photovoltaic switch based on lateral BiFeO3 cells Ji serves as a basis for solid-state memory. This phenomenon can also yield an interesting photovoltaic imposed by the ferroelectric polarization vectors. Here, we demonstrate a single-domain photovoltaic

Jo, Moon-Ho

224

Building DomainSpecific Search Engines with Machine Learning Techniques  

E-Print Network [OSTI]

.netpart.com lets the user search over company pages by hostname, company name, and location. ffl wwwBuilding Domain­Specific Search Engines with Machine Learning Techniques Andrew McCallum zy Science Carnegie Mellon University Pittsburgh, PA 15213 Abstract Domain­specific search engines

McCallum, Andrew

225

WELL-CENTERED OVERRINGS OF AN INTEGRAL DOMAIN  

E-Print Network [OSTI]

WELL-CENTERED OVERRINGS OF AN INTEGRAL DOMAIN is a localization of A if and only if B is flat and well-centered over A. If the integral clo* *sure.3 that a simple flat well-centered overring of an integral domain A is a localization of A. If the integral

Heinzer, William

226

Important Cognitive Components of Domain-Specific Search Knowledge  

E-Print Network [OSTI]

the subject-specific terms to enter in a query. For example, many university students often buy electronicImportant Cognitive Components of Domain-Specific Search Knowledge Suresh K. Bhavnani School Many users have acquired a sophisticated understanding of searching the Web in specific domains

Bhavnani, Suresh K.

227

LNG FEM: Graded Meshes on Domains of Polygonal Structures  

E-Print Network [OSTI]

LNG FEM: Graded Meshes on Domains of Polygonal Structures Hengguang Li and Victor Nistor Abstract. We develop LNG FEM, a software package for graded mesh generation and for solving elliptic equations. LNG FEM gen- erates user-specified graded meshes on arbitrary 2D domains with straight edges

Nistor, Victor

228

A certifying frontend for (sub)polyhedral abstract domains  

E-Print Network [OSTI]

of the overall abstract domain. The main contribution of the work described here is the design of the linkA certifying frontend for (sub)polyhedral abstract domains Alexis Fouilhe and Sylvain Boulmé Univ. Grenoble-Alpes, VERIMAG, F-38000 Grenoble, France {alexis.fouilhe,sylvain.boulme}@imag.fr Abstract. Convex

Paris-Sud XI, Université de

229

Domain-theoretic models of parametric polymorphism L. Birkedal  

E-Print Network [OSTI]

gives formal proof of solutions to a large class of recursive domain equations, which we explicate Copenhagen S, DENMARK, birkedal@itu.dk This work is sponsored by Danish Research Agency stipend no. 272 that such a calculus could serve as a very powerful metalanguage for domain theory in which one could also encode

Birkedal, Lars

230

Female Team Overall Name Age Rank Time Rank Time Rank Time Pace Rank Time Rank Time Pace Time  

E-Print Network [OSTI]

Female Team Overall Name Age Rank Time Rank Time Rank Time Pace Rank Time Rank Time Pace Time 1 Amy:56:27.6 Deborah Mc Eligot Deborah Storrings Male Team Overall Name Age Rank Time Rank Time Rank Time Pace Rank Time Rank Time Pace Time 1 Macon Fessenden 20 1 5:42.2 2 0:26.9 1 34:29.7 3:23 1 0:12.8 1 17:41.1 3

Suzuki, Masatsugu

231

Domain wall QCD with physical quark masses  

E-Print Network [OSTI]

We present results for several light hadronic quantities ($f_\\pi$, $f_K$, $B_K$, $m_{ud}$, $m_s$, $t_0^{1/2}$, $w_0$) obtained from simulations of 2+1 flavor domain wall lattice QCD with large physical volumes and nearly-physical pion masses at two lattice spacings. We perform a short, O(3)%, extrapolation in pion mass to the physical values by combining our new data in a simultaneous chiral/continuum `global fit' with a number of other ensembles with heavier pion masses. We use the physical values of $m_\\pi$, $m_K$ and $m_\\Omega$ to determine the two quark masses and the scale - all other quantities are outputs from our simulations. We obtain results with sub-percent statistical errors and negligible chiral and finite-volume systematics for these light hadronic quantities, including: $f_\\pi$ = 130.2(9) MeV; $f_K$ = 155.5(8) MeV; the average up/down quark mass and strange quark mass in the $\\overline {\\rm MS}$ scheme at 3 GeV, 2.997(49) and 81.64(1.17) MeV respectively; and the neutral kaon mixing parameter, $B_K$, in the RGI scheme, 0.750(15) and the $\\overline{\\rm MS}$ scheme at 3 GeV, 0.530(11).

RBC; UKQCD collaborations; :; T. Blum; P. A. Boyle; N. H. Christ; J. Frison; N. Garron; R. J. Hudspith; T. Izubuchi; T. Janowski; C. Jung; A. Juettner; C. Kelly; R. D. Kenway; C. Lehner; M. Marinkovic; R. D. Mawhinney; G. McGlynn; D. J. Murphy; S. Ohta; A. Portelli; C. T. Sachrajda; A. Soni

2014-11-25T23:59:59.000Z

232

Nano-Domain Analysis Via Massive Cluster Secondary Ion Mass Spectrometry in the Event-by-Event Mode  

E-Print Network [OSTI]

clusters useful probes to obtain molecular information from both nano-objects and nano-domains. The "event-by-event bombardment/detection mode" probes nano-objects one-at-a-time, while collecting and storing the corresponding secondary ion (SI) information...

Pinnick, Veronica Tiffany

2011-02-22T23:59:59.000Z

233

Energy-momentum balance in particle - domain wall perforating collision  

E-Print Network [OSTI]

We investigate the energy-momentum balance in the perforating collision of a point particle with an infinitely thin planar domain wall within the linearized gravity in arbitrary dimensions. Since the metric of the wall increases with distance, the wall and the particle are never free, and their energy-momentum balance involves not only the instantaneous kinetic momenta, but also the non-local contribution of gravitational stresses. However, careful analysis shows that the stresses can be unambiguously divided between the colliding objects leading to definition of the gravitationally dressed momenta. These take into account for gravity in the same way as the potential energy does in the non-relativistic theory, but our treatment is fully relativistic. Another unusual feature of our problem is the non-vanishing flux of the total energy-momentum tensor through the lateral surface of the world tube. In this case the zero divergence of the energy-momentum tensor does not imply conservation of the total momentum defined as the integral over the space-like section of the tube. But one can still define the conservation low infinitesimally, passing to time derivatives of the momenta. Using this definition we establish the momentum balance in terms of the dressed particle and wall momenta.

D. V. Gal'tsov; E. Yu. Melkumova; P. A. Spirin

2015-02-10T23:59:59.000Z

234

Learning domain abstractions for long lived robots   

E-Print Network [OSTI]

Recent trends in robotics have seen more general purpose robots being deployed in unstructured environments for prolonged periods of time. Such robots are expected to adapt to different environmental conditions, and ...

Rosman, Benjamin Saul

2014-06-27T23:59:59.000Z

235

Time Off  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus TomAboutManusScienceThe43068G. ThundatSmallDepartment ofTimTime

236

Time-Domain Identification of PWM Converters Aided by the C2000 DSP Family  

E-Print Network [OSTI]

(non-switching) systems and on simulation models of grid power systems [5]. In this study we propose and Sam Ben-Yaakov Power Electronics Laboratory Department of Electrical and Computer Engineering Ben of inaccuracies in controller design is insufficient information of the open-loop response of the plant

237

Effective optical response of silicon to sunlight in the finite-difference time-domain method  

E-Print Network [OSTI]

Alexei Deinega* and Sajeev John Department of Physics, University of Toronto, 60 St. George Street simulation of light propagation and absorption in silicon in the spectral range of 300­1000 nm. Numerical precision of our model is demonstrated for Mie scattering from a silicon sphere and solar absorption

John, Sajeev

238

Spectral modeling of two incline cylinders with validation in the time domain  

E-Print Network [OSTI]

Clusters of long slender members such as risers or tendons are commonly found on deep water offshore platforms. Current practice is to space these slender structural members far enough apart to assume that they behave as a single cylinder without...

Oswalt, Aaron Jacob

2012-06-07T23:59:59.000Z

239

Detecting coherent phonon wave effects in superlattices using time-domain thermoreflectance  

E-Print Network [OSTI]

Superlattices (SLs), structures consisting of periodic layers of thin films of several angstroms to tens of nanometers thick, have unique electrical and thermal properties that make them well suited for applications in ...

Luckyanova, Maria N. (Maria Nickolayevna)

2012-01-01T23:59:59.000Z

240

Free-Space Time-Domain Method for Measuring Thin Film Dielectric Properties  

DOE Patents [OSTI]

A non-contact method for determining the index of refraction or dielectric constant of a thin film on a substrate at a desired frequency in the GHz to THz range having a corresponding wavelength larger than the thickness of the thin film (which may be only a few microns). The method comprises impinging the desired-frequency beam in free space upon the thin film on the substrate and measuring the measured phase change and the measured field reflectance from the reflected beam for a plurality of incident angles over a range of angles that includes the Brewster's angle for the thin film. The index of refraction for the thin film is determined by applying Fresnel equations to iteratively calculate a calculated phase change and a calculated field reflectance at each of the plurality of incident angles, and selecting the index of refraction that provides the best mathematical curve fit with both the dataset of measured phase changes and the dataset of measured field reflectances for each incident angle. The dielectric constant for the thin film can be calculated as the index of refraction squared.

Li, Ming; Zhang, Xi-Cheng; Cho, Gyu Cheon

2000-05-02T23:59:59.000Z

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

On the rheological models used for time-domain methods of seismic wave propagation  

E-Print Network [OSTI]

January 2005. [1] After publications by Emmerich and Korn [1987] and Carcione et al. [1988a, 1988b rheological models ­ generalized Maxwell body (as defined by Emmerich and Korn) or generalized Zener body. Two

242

A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea...  

Open Energy Info (EERE)

Volcano, HawaiiThesisDissertation Author Catherine King Skokan Organization Colorado School of Mines Published Publisher Not Provided, 1974 DOI Not Provided Check for DOI...

243

Geophysical (time domain electromagnetic model) delineation of a shallow brine beneath a freshwater lake,  

E-Print Network [OSTI]

et al., 1999] and (2) seepage from sediments beneath the lake [Braudo et al., 1970; Stiller et al., 1975; Stiller, 1994]. The average annual contribution of all sources is estimated to be 146,000 tons below lake's bottom, and to 2000­3500 mg/L at 5 m depth [Stiller, 1994]. On the basis of tritium data

Gvirtzman, Haim

244

Estimation of Seismic Load Demand for a Wind Turbine in the Time Domain: Preprint  

SciTech Connect (OSTI)

Turbines installed in seismically active regions such as the Pacific Rim or the Mediterranean must consider loads induced by base shaking from an earthquake. To account for this earthquake risk, current International Electrotechnical Commission (IEC) certification requirements provide a simplified method for calculating seismic loads which is intended to be conservative. Through the addition of capabilities, it is now possible to simulate earthquake loading of a wind turbine in conjunction other load sources such as wind and control system behavior using the FAST code. This paper presents a comparison of three earthquake loading scenarios of the National Renewable Energy Laboratory (NREL) offshore 5-MW baseline wind turbine: idling; continued operation through an earthquake; and an emergency shutdown initiated by an earthquake. Using a set of 22 earthquake records, simulations are conducted for each load case. A summary of the resulting tower moment demand is presented to assess the influence of operational state on the resulting structural demand.

Prowell, I.; Elgamal, A.; Uang, C.; Jonkman, J.

2010-03-01T23:59:59.000Z

245

Time and Frequency Domain CCD-Based Thermoreflectance Techniques for High-Resolution Transient Thermal Imaging  

E-Print Network [OSTI]

is in the order of 10-4/K. A blue or green light emitting diode (LED) uniformly illuminates the DUT under

246

Ultrafast heterogeneous electron transfer reactions: Comparative theoretical studies on time-and frequency-domain data  

E-Print Network [OSTI]

; published online 6 January 2006 Recent theoretical studies on linear absorption spectra of dye-semiconductor. These studies complement our recent absorption spectra fit for two perylene bridge-anchor group TiO2 systems levels to the semiconductor band continuum. The used model is further applied to study the effect

Röder, Beate

247

Finite Whitney element implicit time domain electromagnetic solvers for large timesteps  

SciTech Connect (OSTI)

Huge problems in the code stemmed from the fact Bossavit uses the notation vol(T) both for the non-negative volume of tet T, and the ordered volumes formed a triple product of three vectors. This notational confusion lead us to believe the ordered volume would be the same under interchange of nodes; this is clearly incorrect. We start then, by looking at the volume formed by cross products and those formed by integrals.

Brown, D. J. (David J.)

2003-01-01T23:59:59.000Z

248

Analytical time domain electromagnetic field propagators and closed-form solutions for transmission lines  

E-Print Network [OSTI]

An analytical solution for the coupled telegrapher’s equations in terms of the voltage and current on a homogeneous lossy transmission line and multiconductor transmission line is presented. The resulting telegrapher’s equation solution is obtained...

Jeong, Jaehoon

2009-05-15T23:59:59.000Z

249

Experimental time-domain controlled source electromagnetic induction for highly conductive targets detection and discrimination  

E-Print Network [OSTI]

The response of geological materials at the scale of meters and the response of buried targets of different shapes and sizes using controlled-source electromagnetic induction (CSEM) is investigated. This dissertation focuses on three topics; i) frac...

Benavides Iglesias, Alfonso

2007-09-17T23:59:59.000Z

250

Time Domain Interference Cancellation for Cognitive Radios and Future Wireless Systems  

E-Print Network [OSTI]

switches with low equivalent resistance in the DAC for allis the equivalent turn-on resistance of the switches in the

Yang, Jing

2010-01-01T23:59:59.000Z

251

Time-Domain Polarization-Sensitive Optical Coherence Tomography in Soft Biological Tissue  

E-Print Network [OSTI]

......................................................................................................................... 65 ix LIST OF FIGURES Page Fig. 2.1. Schematic of the Mueller PS-OCT system. SLD, super-luminescent diode; PM...-luminescent diode (SLD)-based light source (Superlum; ? 0 = 1.3 ?m, FWHM-BW = 60 nm, output power 10 mW) is vertically polarized. A polarization modulator (Conoptics; fast axis at 45?) continuously modulates the source-polarization state with a 140 k...

Todorovic, Milos

2009-05-15T23:59:59.000Z

252

Nonlinear Time Domain Modeling and Simulation of Surface and Embedded NPPS  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGY TAXBalanced Scorecard Federal2EnergyDepartment ofNews NewsNickn tDegradation|

253

Estimation of Time-Domain Calibration Parameters to Restore MIMO-TDD Channel Reciprocity  

E-Print Network [OSTI]

an overcrowding of the radio spectrum, spurring research in innovative radio transmission techniques like cognitive radio (CR). CR enables coexistence of secondary (unlicensed) systems with primary licensed sys.unice.fr Abstract--Spatial interweave cognitive radio opportunistically exploits spatial holes to enable

Paris-Sud XI, Université de

254

Three-dimensional finite difference time domain modeling of the diurnal and seasonal variations in  

E-Print Network [OSTI]

in Schumann resonance parameters Heng Yang1 and Victor P. Pasko1 Received 3 October 2005; revised 27 January of Schumann resonances (SR) have been reported in a number of experiments. In this paper, a three to study the diurnal and seasonal variability of the power and frequency of the first Schumann resonance

Pasko, Victor

255

Combining frequency and time domain approaches to systems with multiple spike train input and output  

E-Print Network [OSTI]

between neuronal spike trains. Prog Biophys Mol Biol Vapnikto systems with multiple spike train input and output D. R.Keywords Multiple spike trains · Neural coding · Maximum

Brillinger, D. R.; Lindsay, K. A.; Rosenberg, J. R.

2009-01-01T23:59:59.000Z

256

Time-Domain Electromagnetics At Neal Hot Springs Geothermal Area (Colorado  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-gTaguspark JumpDetective JumpInc., 2010)PtyO'reilly interviews

257

A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano,  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop,SaveWhiskey FlatshydroMultiple GeothermalHawaii | Open Energy

258

Time Domain Simulations of Chemical Bonding Effects in Surface-Enhanced  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 andThe1A:decisional. 1 B O N N E V I L L E

259

Time-Domain Electromagnetics At Dixie Hot Springs Area (Combs 2006) | Open  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County, Oklahoma: EnergyLakes,Energy

260

Time-Domain Electromagnetics At Glass Mountain Area (Cumming And Mackie,  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County, Oklahoma:

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Time-Domain Electromagnetics At Hualalai Northwest Rift Area (Thomas, 1986)  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County, Oklahoma:Open Energy| Open

262

Time-Domain Electromagnetics At Kilauea East Rift Geothermal Area (Skokan,  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County, Oklahoma:Open Energy|1974) |

263

Time-Domain Electromagnetics At Kilauea East Rift Geothermal Area (Thomas,  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County, Oklahoma:Open Energy|1974)

264

Time-Domain Electromagnetics At Kilauea Southwest Rift And South Flank Area  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County, Oklahoma:Open

265

Time-Domain Electromagnetics At Mauna Loa Northeast Rift Area (Thomas,  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County, Oklahoma:Open(Nordquist,

266

Time-Domain Electromagnetics At Soda Lake Area (Combs 2006) | Open Energy  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County,

267

Time-Domain Electromagnetics At Truckhaven Area (Warpinski, Et Al., 2004) |  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)Tillman County,Open Energy Information

268

A Characteristic Domain Decomposition and SpaceTime Local Refinement Method for  

E-Print Network [OSTI]

model the reactive transport of solutes in groundwater and surface water, the movement of aerosols and local refinement schemes. 1 Introduction First­order linear hyperbolic partial differential equations that introduce extra difficulties. Physical interfaces arise, for example, in the modeling of transport processes

South Carolina, University of

269

A Characteristic Domain Decomposition and Space Time Local Refinement Method for  

E-Print Network [OSTI]

cause severe numerical difficulties [1­5]. Conventional finite difference or finite element methods­Lagrangian methods; linear hyperbolic problems; local refinement techniques I. INTRODUCTION First-order linear hyperbolic partial differential equations model the reactive transport of solutes in groundwater and surface

Sharpley, Robert

270

Time Domain Interference Cancellation for Cognitive Radios and Future Wireless Systems  

E-Print Network [OSTI]

68 Fig. 5-4 Thermometer-codedan example of a 10-bit thermometer-coded DAC [52]. There arefrom the binary-to-thermometer decoder. When the digital

Yang, Jing

2010-01-01T23:59:59.000Z

271

Protein Oligomerization Through Domain Swapping: Role of Inter-molecular Interactions and  

E-Print Network [OSTI]

show that prevention of domain swapping inhibits amyloid fibrils by 80%,11 and strongly support the idea that domain swapping has an important role in fibril formation. Domain swapping is a term used found to form domain-swapped configurations, such as the human prion,12,13 the SH3 domain,14,15 p13suc1

Yang, Sichun

272

Calibrated Continuous-Time Sigma-Delta Modulators  

E-Print Network [OSTI]

are used for the design of a 25MHz bandwidth lowpass continuous-time sigma-delta modulator with time-domain two-step 3-bit quantizer and DAC for WiMAX applications. The prototype is designed by employing a level-to-pulse-width modulation (PWM) converter...

Lu, Cho-Ying

2010-07-14T23:59:59.000Z

273

Numerical Calculation of Beam Coupling Impedances in the Frequency Domain using FIT  

E-Print Network [OSTI]

The transverse impedance of kicker magnets is considered to be one of the main beam instability sources in the projected SIS-100 at FAIR and also in the SPS at CERN. The longitudinal impedance can contribute to the heat load, which is especially a concern in the cold sections of SIS-100 and LHC. In the high frequency range, commercially available time domain codes like CST Particle Studio serve to calculate the impedance but they are inapplicable at medium and low frequencies which become more important for larger size synchrotrons. We present the ongoing work of developing a Finite Integration Technique (FIT) solver in frequency domain which is based on the Parallel and Extensible Toolkit for Scientific computing (PETSc) framework in C++. Proper beam adapted boundary conditions are important to validate the concept. The code is applied to an inductive insert used to compensate the longitudinal space charge impedance in low energy machines. Another application focuses on the impedance contribution of a ferrit...

Niedermayer, U

2012-01-01T23:59:59.000Z

274

A Framework for Incorporating General Domain Knowledge into Latent Dirichlet Allocation using First-Order Logic  

SciTech Connect (OSTI)

Topic models have been used successfully for a variety of problems, often in the form of application-specific extensions of the basic Latent Dirichlet Allocation (LDA) model. Because deriving these new models in order to encode domain knowledge can be difficult and time-consuming, we propose the Fold-all model, which allows the user to specify general domain knowledge in First-Order Logic (FOL). However, combining topic modeling with FOL can result in inference problems beyond the capabilities of existing techniques. We have therefore developed a scalable inference technique using stochastic gradient descent which may also be useful to the Markov Logic Network (MLN) research community. Experiments demonstrate the expressive power of Fold-all, as well as the scalability of our proposed inference method.

Andrzejewski, D; Zhu, X; Craven, M; Recht, B

2011-01-18T23:59:59.000Z

275

Short time scale thermal mechanical shock wave propagation in high performance microelectronic packaging configuration  

E-Print Network [OSTI]

for various combinations of t1 and t2 and the parabolic case..................................... 34 4-2 Time domain plots of normalized displacement at 10 nm for various combinations of t1 and t2 and the parabolic case .................. 35 4...-3 Time domain plots of normalized temperature at 30 nm for various combinations of t1 and t2 and the parabolic case .................. 37 4-4 Time domain plots of normalized displacement at 30 nm for various combinations of t1 and t2...

Nagaraj, Mahavir

2004-11-15T23:59:59.000Z

276

Domain wall induced magnetoresistance in a superconductor/ferromagnet nanowire  

E-Print Network [OSTI]

In a nanowire consisting of a ferromagnet/insulator/superconductor multilayer structure, the superconductivity is shown to depend strongly on the configuration of the magnetic domain walls in the neighboring ferromagnetic ...

Miao, G. X.

277

The Observation of Highly Ordered Domains in Membranes with Cholesterol  

SciTech Connect (OSTI)

Rafts, or functional domains, are transient nano- or mesoscopic structures in the exoplasmic leaflet of the plasma membrane, and are thought to be essential for many cellular processes. Using neutron diffraction and computer modelling, we present evidence for the existence of highly ordered lipid domains in the cholesterol-rich (32.5 mol%) liquid-ordered (lo) phase of dipalmitoylphosphatidylcholine membranes. The liquid ordered phase in one-component lipid membranes has previously been thought to be a homogeneous phase. The presence of highly ordered lipid domains embedded in a disordered lipid matrix implies non-uniform distribution of cholesterol between the two phases. The experimental results are in excellent agreement with recent computer simulations of DPPC/cholesterol complexes [Meinhardt, Vink and Schmid (2013). Proc Natl Acad Sci USA 110(12): 4476 4481], which reported the existence of nanometer size lo domains in a liquid disordered lipid environment.

Armstrong, Clare L [McMaster University; Marquardt, Drew [Brock University, St. Catharines, ON, Canada; Dies, Hannah [McMaster University; Kucerka, Norbert [Canadian Neutron Beam Centre and Comelius University (Slovakia); Yamani, Zahra [Canadian Neutron Beam Centre, National Research Council, Chalk River Laboratorie; Harroun, Thad [Brock University, St. Catharines, ON, Canada; Katsaras, John [ORNL; Shi, A-C [McMaster University; Rheinstadter, Maikel C [McMaster University

2013-01-01T23:59:59.000Z

278

A multi-domain process design and improvement framework  

E-Print Network [OSTI]

Processes in manufacturing, services, and healthcare are complex socio-technical systems composed of intricately sequenced activities supported by elements drawn from multiple domains. While many of these processes offer ...

Nicol, Robert A. (Robert Arthur), 1969-

2010-01-01T23:59:59.000Z

279

Structural and Functional Characterization of DUF1471 Domains...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

function (DUF1471) from a family of conserved proteins also known as YhcN or BhsAMcbA. Proteins containing DUF1471 may have a single or three copies of this domain....

280

Apron: A Library of Numerical Abstract Domains for Static Analysis  

E-Print Network [OSTI]

Polka convex polyhedra linear equalities PPL + Wrapper convex polyhedra linear congruences Abstraction toolbox- mensions in vector spaces. Nevertheless, the domains implemented in the PPL can be interfaced to Apron

Miné, Antoine

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Scaling reinforcement learning to the unconstrained multi-agent domain  

E-Print Network [OSTI]

policies over continuous action spaces, which can reduce problem complexity for domains that require continuous action spaces (analog controllers) by eliminating the need to finely discretize the action space. Finally, we look at ways to perform...

Palmer, Victor

2009-06-02T23:59:59.000Z

282

Understanding Domain Registration Abuses Scott E. Coull1  

E-Print Network [OSTI]

Understanding Domain Registration Abuses Scott E. Coull1 , Andrew M. White1 , Ting-Fang Yen2. Varadharajan, and C. Weber (Eds.): SEC 2010, IFIP AICT 330, pp. 68­79, 2010. c IFIP International Federation

Reiter, Michael

283

Understanding Domain Registration Abuses Scott E. Coull1  

E-Print Network [OSTI]

Understanding Domain Registration Abuses Scott E. Coull1 , Andrew M. White1 , Ting-Fang Yen2 (Ed.) (2012) 68-79" DOI : 10.1007/978-3-642-15257-3_7 #12;security problem underlying these behaviors

Boyer, Edmond

284

Lipschitz continuity of the Green function in Denjoy domains  

E-Print Network [OSTI]

Lipschitz continuity of the Green function in Denjoy domains Tom Carroll and Stephen J Gardiner of the harmonic 2000 Mathematics Subject Classification. Primary 31B25; 31C35. 1 #12;2 TOM CARROLL AND STEPHEN J

Carroll, Tom

285

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported...

286

Status Report on Protected Domains for Cyber Infrastructure Management  

E-Print Network [OSTI]

through the use of distributed, highly secure, protected domains. Instead of creating a costly physically, Network Security, Information Assurance 1 Introduction Currently, our national cyber infrastructure to the President for Cyber Space Security and Chairman, President's Critical Infrastructure Protection Board

Irvine, Cynthia E.

287

Log-domain circuit models of chemical reactions  

E-Print Network [OSTI]

We exploit the detailed similarities between electronics and chemistry to develop efficient, scalable bipolar or subthreshold log-domain circuits that are dynamically equivalent to networks of chemical reactions. Our ...

Mandal, Soumyajit

288

Domain-specific Web Service Discovery with Service Class Descriptions  

SciTech Connect (OSTI)

This paper presents DynaBot, a domain-specific web service discovery system. The core idea of the DynaBot service discovery system is to use domain-specific service class descriptions powered by an intelligent Deep Web crawler. In contrast to current registry-based service discovery systems--like the several available UDDI registries--DynaBot promotes focused crawling of the Deep Web of services and discovers candidate services that are relevant to the domain of interest. It uses intelligent filtering algorithms to match services found by focused crawling with the domain-specific service class descriptions. We demonstrate the capability of DynaBot through the BLAST service discovery scenario and describe our initial experience with DynaBot.

Rocco, D; Caverlee, J; Liu, L; Critchlow, T J

2005-02-14T23:59:59.000Z

289

Critical Ising interfaces in multiply-connected domains  

E-Print Network [OSTI]

We prove a general result on convergence of interfaces in the critical planar Ising model to conformally invariant curves absolutely continuous with respect to SLE(3). Our setup includes multiple interfaces on arbitrary finitely connected domains, and we also treat the radial SLE case. In the case of simply and doubly connected domains, the limiting processes are described explicitly in terms of rational and elliptic functions, respectively.

Konstantin Izyurov

2015-03-13T23:59:59.000Z

290

A multilevel preconditioner for domain decomposition boundary systems  

SciTech Connect (OSTI)

In this note, we consider multilevel preconditioning of the reduced boundary systems which arise in non-overlapping domain decomposition methods. It will be shown that the resulting preconditioned systems have condition numbers which be bounded in the case of multilevel spaces on the whole domain and grow at most proportional to the number of levels in the case of multilevel boundary spaces without multilevel extensions into the interior.

Bramble, J.H.; Pasciak, J.E.; Xu, Jinchao.

1991-12-11T23:59:59.000Z

291

Can adding oil control domain formation in binary amphiphile bilayers?  

E-Print Network [OSTI]

Bilayers formed of two species of amphiphile of different chain lengths may segregate into thinner and thicker domains composed predominantly of the respective species. Using a coarse-grained mean-field model, we investigate how mixing oil with the amphiphiles affects the structure and thickness of the bilayer at and on either side of the boundary between two neighbouring domains. In particular, we find that oil molecules whose chain length is close to that of the shorter amphiphiles segregate to the thicker domain. This smooths the surface of the hydrophobic bilayer core on this side of the boundary, reducing its area and curvature and their associated free-energy penalties. The smoothing effect is weaker for oil molecules that are shorter or longer than this optimum value: short molecules spread evenly through the bilayer, while long molecules swell the thicker domain, increasing the surface area and curvature of the bilayer core in the interfacial region. Our results show that adding an appropriate oil could make the formation of domain boundaries more or less favourable, raising the possibility of controlling the domain size distribution.

M. J. Greenall; C. M. Marques

2014-06-12T23:59:59.000Z

292

E-Print Network 3.0 - associating transmembrane domains Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

transmembrane domains Search Powered by Explorit Topic List Advanced Search Sample search results for: associating transmembrane domains Page: << < 1 2 3 4 5 > >> 1 SUPPLEMENTARY...

293

PROCEEDINGS OF RIKEN BNL RESEARCH CENTER WORKSHOP ENTITLED - DOMAIN WALL FERMIONS AT TEN YEARS (VOLUME 84)  

SciTech Connect (OSTI)

The workshop was held to mark the 10th anniversary of the first numerical simulations of QCD using domain wall fermions initiated at BNL. It is very gratifying that in the intervening decade widespread use of domain wall and overlap fermions is being made. It therefore seemed appropriate at this stage for some ''communal introspection'' of the progress that has been made, hurdles that need to be overcome, and physics that can and should be done with chiral fermions. The meeting was very well attended, drawing about 60 registered participants primarily from Europe, Japan and the US. It was quite remarkable that pioneers David Kaplan, Herbert Neuberger, Rajamani Narayanan, Yigal Shamir, Sinya Aoki, and Pavlos Vranas all attended the workshop. Comparisons between domain wall and overlap formulations, with their respective advantages and limitations, were discussed at length, and a broad physics program including pion and kaon physics, the epsilon regime, nucleon structure, and topology, among others, emerged. New machines and improved algorithms have played a key role in realizing realistic dynamical fermion lattice simulations (small quark mass, large volume, and so on), so much in fact that measurements are now as costly. Consequently, ways to make the measurements more efficient were also discussed. We were very pleased to see the keen and ever growing interest in chiral fermions in our community and the significant strides our colleagues have made in bringing chiral fermions to the fore of lattice QCD calculations. Their contributions made the workshop a success, and we thank them deeply for sharing their time and ideas. Finally, we must especially acknowledge Norman Christ and Bob Mawhinney for their early and continued collaboration without which the success of domain wall fermions would not have been possible.

BLUM,T.; SONI,A.

2007-03-15T23:59:59.000Z

294

A System-Level Electrostatic-Discharge-Protection Modeling Methodology for Time-  

E-Print Network [OSTI]

A System-Level Electrostatic-Discharge- Protection Modeling Methodology for Time- Domain Analysis. Index Terms--Electromagnetic compatibility (EMC), electrostatic discharge (ESD), modeling, system level precise simulations of electrostatic discharge (ESD) stress propagation on a printed circuit board (PCB

Boyer, Edmond

295

Generating English Summaries of Time Series Data Using the Gricean Maxims  

E-Print Network [OSTI]

, gas-turbine sensor readings, and hospital intensive care data. Our weather-forecast generator technology for generating English textual summaries of time-series data, in three domains: weather forecasts

Sripada, Yaji

296

Hyperpolarized Nanodiamond with Long Spin Relaxation Times  

E-Print Network [OSTI]

The use of hyperpolarized agents in magnetic resonance (MR), such as 13C-labeled compounds, enables powerful new imaging and detection modalities that stem from a 10,000-fold boost in signal. A major challenge for the future of the hyperpolarizaton technique is the inherently short spin relaxation times, typically solid-state environment, exhibit relaxation times exceeding 1 hour. Combined with the already established applications of NDs in the life-sciences as inexpensive fluorescent markers and non-cytotoxic substrates for gene and drug delivery, these results extend the theranostic capabilities of nanoscale diamonds into the domain of hyperpolarized MR.

Ewa Rej; Torsten Gaebel; Thomas Boele; David E. J. Waddington; David J. Reilly

2015-02-22T23:59:59.000Z

297

Sampling Approaches for Multi-Domain Internet Performance Measurement Infrastructures  

SciTech Connect (OSTI)

The next-generation of high-performance networks being developed in DOE communities are critical for supporting current and emerging data-intensive science applications. The goal of this project is to investigate multi-domain network status sampling techniques and tools to measure/analyze performance, and thereby provide “network awareness” to end-users and network operators in DOE communities. We leverage the infrastructure and datasets available through perfSONAR, which is a multi-domain measurement framework that has been widely deployed in high-performance computing and networking communities; the DOE community is a core developer and the largest adopter of perfSONAR. Our investigations include development of semantic scheduling algorithms, measurement federation policies, and tools to sample multi-domain and multi-layer network status within perfSONAR deployments. We validate our algorithms and policies with end-to-end measurement analysis tools for various monitoring objectives such as network weather forecasting, anomaly detection, and fault-diagnosis. In addition, we develop a multi-domain architecture for an enterprise-specific perfSONAR deployment that can implement monitoring-objective based sampling and that adheres to any domain-specific measurement policies.

Calyam, Prasad

2014-09-15T23:59:59.000Z

298

Frequency-Domain Modeling Techniques for the Scalar Wave Equation : An Introduction  

E-Print Network [OSTI]

Frequency-domain finite-difference (FDFD) modeling offers several advantages over traditional timedomain

Ajo-Franklin, Jonathan B.

2005-01-01T23:59:59.000Z

299

High-Quality 2D Metal-Organic Coordination Network Providing Giant Cavities within Mesoscale Domains  

E-Print Network [OSTI]

-phase domains is particularly demanding. A recent step forward in this direction was an anthraquinone honeycomb

Brune, Harald

300

Time Evolution of Temperature and Entropy of a Gravitationally Collapsing Cylinder  

E-Print Network [OSTI]

We investigate the time evolution of the temperature and entropy of a gravitationally collapsing cylinder, represented by an infinitely thin domain wall, as seen by an asymptotic observer. Previous work has shown that the entropy of a spherically symmetric collapsing domain approaches a constant, and we follow this procedure using a (3+1) BTZ metric to see if a different topology will yield different results. We do this by coupling a scalar field to the background of the domain wall and analyzing the spectrum of radiation as a function of time. We find that the spectrum is quasi-thermal, with the degree of thermality increasing as the domain wall approaches the horizon. The thermal distribution allows for the determination of the temperature as a function of time, and we find that the late time temperature is very close to the Hawking temperature and that it also exhibits the proper scaling with the mass. From the temperature we find the entropy. Since the collapsing domain wall is what forms a black hole, we can compare the results to those of the standard entropy-area relation. We find that the entropy does in fact approach a constant that is close to the Hawking entropy. However, the time dependence of the entropy shows that the entropy decreases with time, indicating that a (3+1) BTZ domain wall will not collapse spontaneously.

Evan Halstead; Peng Hao

2011-06-12T23:59:59.000Z

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

SUBCRITICAL BUBBLES NEAR THE PHASE SPACE DOMAIN WALL  

E-Print Network [OSTI]

We study the subcritical bubble formation near the phase space domain wall. We take into account that the phase of the scalar field can vary using complex U(1) symmetric field and a phenomenological potential with cubic term responsible to symmetry breaking. We show that the presence of the domain wall induces subcritical bubbles so that their formation rate near the wall is considerably larger than far of it. The allowed deviations of the phases of new bubbles are so large that they prevent the system from induced nucleation.

J. Sirkka; I. Vilja

1995-03-31T23:59:59.000Z

302

Correlation Between Domain Behavior and Magnetic Properties of Materials  

SciTech Connect (OSTI)

Correlation between length scales in the field of magnetism has long been a topic of intensive study. The long-term desire is simple: to determine one theory that completely describes the magnetic behavior of matter from an individual atomic particle all the way up to large masses of material. One key piece to this puzzle is connecting the behavior of a material's domains on the nanometer scale with the magnetic properties of an entire large sample or device on the centimeter scale. In the first case study involving the FeSiAl thin films, contrast and spacing of domain patterns are clearly related to microstructure and stress. Case study 2 most clearly demonstrates localized, incoherent domain wall motion switching with field applied along an easy axis for a square hysteresis loop. In case study 3, axis-specific images of the complex Gd-Si-Ge material clearly show the influence of uniaxial anisotropy. Case study 4, the only study with the sole intent of creating domain structures for imaging, also demonstrated in fairly simple terms the effects of increasing stress on domain patterns. In case study 5, it was proven that the width of magnetoresistance loops could be quantitatively predicted using only MFM. When all of the case studies are considered together, a dominating factor seems to be that of anisotropy, both magneticrostaylline and stress induced. Any quantitative bulk measurements heavily reliant on K coefficients, such as the saturation fields for the FeSiAl films, H{sub c} in cases 1, 3, and 5, and the uniaxial character of the Gd{sub 5}(Si{sub 2}Ge{sub 2}), transferred to and from the domain scale quite well. In-situ measurements of domain rotation and switching, could also be strongly correlated with bulk magnetic properties, including coercivity, M{sub s}, and hysteresis loop shape. In most cases, the qualitative nature of the domain structures, when properly considered, matched quite well to what might have been expected from theory and calculation, and provided such information in a matter of minutes. In fact, typical characterization in each of these studies was far more complete and reliable with domain imagery to back it up--especially the single crystal and applied field pictures. In these simple cases, it appears that domain imagery may be close to standing alone in magnetic characterization. The surprises in the 10 nm CoFeHfO film, the complexity seen in the polycrystalline Gd-Si-Ge sample and the broad range predictions of the K{sub 1} of the same reinforce the unreliability of making concrete statements based purely on domain imagery of any type, but it may be possible to create standards similar to the types used in optical microscopy for metallography in these complex cases.

Jeffrey Scott Leib

2003-05-31T23:59:59.000Z

303

Single channel speech enhancement using MMSE estimation of short-time modulation magnitude spectrum  

E-Print Network [OSTI]

Single channel speech enhancement using MMSE estimation of short-time modulation magnitude spectrum.wojcicki@gmail.com Abstract In this paper we investigate the enhancement of speech by ap- plying MMSE short-time spectral domain spectral subtraction. Index Terms: speech enhancement, MMSE short-time spectral magnitude

304

Methods of use of cellulose binding domain proteins  

DOE Patents [OSTI]

A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques. 16 figs.

Shoseyov, O.; Shpiegl, I.; Goldstein, M.A.; Doi, R.H.

1997-09-23T23:59:59.000Z

305

Methods of use of cellulose binding domain proteins  

DOE Patents [OSTI]

A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production thereof. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques.

Shoseyov, Oded (Karmey Yosef, IL); Shpiegl, Itai (Rehovot, IL); Goldstein, Marc A. (Davis, CA); Doi, Roy H. (Davis, CA)

1997-01-01T23:59:59.000Z

306

Methods of detection using a cellulose binding domain fusion product  

DOE Patents [OSTI]

A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production thereof. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques.

Shoseyov, Oded (Shimshon, IL); Shpiegl, Itai (North Gallilea, IL); Goldstein, Marc A. (Davis, CA); Doi, Roy H. (Davis, CA)

1999-01-01T23:59:59.000Z

307

Multiferroic Domain Dynamics in Strained Strontium Titanate A. Vasudevarao,1  

E-Print Network [OSTI]

Multiferroic Domain Dynamics in Strained Strontium Titanate A. Vasudevarao,1 A. Kumar,1 L. Tian,1 J (Received 19 June 2006; published 21 December 2006) Multiferroicity can be induced in strontium titanate to the ferroelectric mm2 phase, followed by a transition to a ferroelastic-ferroelectric mm2 phase in a strontium

Gopalan, Venkatraman

308

Supersymmetric vertex models with domain wall boundary conditions  

SciTech Connect (OSTI)

By means of the Drinfeld twists, we derive the determinant representations of the partition functions for the gl(1 vertical bar 1) and gl(2 vertical bar 1) supersymmetric vertex models with domain wall boundary conditions. In the homogeneous limit, these determinants degenerate to simple functions.

Zhao Shaoyou; Zhang Yaozhong [Department of Mathematics, University of Queensland, Brisbane, QLD 4072 (Australia); Department of Mathematics, University of Queensland, Brisbane, QLD 4072 (Australia) and Physikalisches Institut, Universitaet Bonn, D-53115 Bonn (Germany)

2007-02-15T23:59:59.000Z

309

Applying electronic contracting to the aerospace aftercare domain Felipe Meneguzzia,  

E-Print Network [OSTI]

Applying electronic contracting to the aerospace aftercare domain Felipe Meneguzzia, , Sanjay The contract project was a European Commission project whose aim was to develop frame- works, components contracts. In this context, an electronic contract provides a specifi- cation of the expected behaviours

Luck, Michael

310

WHEELS: A CONVERSATIONAL SYSTEM IN THE AUTOMOBILE CLASSIFIEDS DOMAIN  

E-Print Network [OSTI]

WHEELS: A CONVERSATIONAL SYSTEM IN THE AUTOMOBILE CLASSIFIEDS DOMAIN Helen Meng, Senis WHEELS is a conversational system which provides access to a database of eletronic automobile classified users to search through a database of 5,000 automobile classifieds. The current end-to-end system can re

311

Abstract Domains of Affine Relations , T. Sharma1  

E-Print Network [OSTI]

, and stud- ies how they relate to each other. We show that the abstract domains of M¨uller-Olm/Seidl (MOS for affine-relation analysis (ARA)--one defined by M¨uller-Olm and Seidl (MOS) [19, 21] and one defined

Reps, Thomas W.

312

Methods of detection using a cellulose binding domain fusion product  

DOE Patents [OSTI]

A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques. 34 figs.

Shoseyov, O.; Shpiegl, I.; Goldstein, M.A.; Doi, R.H.

1999-01-05T23:59:59.000Z

313

10 DOMAIN-APPROPRIATE DEVICES * For a video example, see  

E-Print Network [OSTI]

of drawing as its application area, and a process control system in a power plant has the domain of that power plant and its functions as its application area. However, most interactive systems use a lot of work into creating "meta- phors" in which the virtual, on-screen world resembles items

Borchers, Jan

314

Conceptual modelling for domain specific document description and retrieval  

E-Print Network [OSTI]

and are applied in the tasks of describing and retrieving documents, within cooperative document management settings, where the users themselves have to perform the document management tasks they need in orderConceptual modelling for domain specific document description and retrieval - An approach

315

Interpreting Performance Data Across Intuitive Domains Martin Schulz1  

E-Print Network [OSTI]

performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National LaboratoryInterpreting Performance Data Across Intuitive Domains Martin Schulz1 , Joshua A. Levine2 , Peer, USA 2 Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, UT {schulzm

Utah, University of

316

An Abstract Domain Extending Difference-Bound Matrices  

E-Print Network [OSTI]

" (or DBMs) is a domain proposed by David Dill, for expressing relations of the form "x - y c" or "c1 x c2". We define dDBMs ("disequalities DBMs") as conjunctions of DBMs with simple disequalities of the form "x = y" or "x = 0". We give algorithms on dDBMs, for deciding the emptiness, computing a normal

Paris-Sud XI, Université de

317

Characterization of dense suspensions using frequency domain photon migration  

E-Print Network [OSTI]

) _____________________________ Kenneth R. Hall (Head of Department) May 2004 Major Subject: Chemical Engineering iii ABSTRACT Characterization of Dense Suspensions Using Frequency Domain Photon Migration. (May 2004) Yingqing Huang, B.S., Tsinghua University; M....2. MSA-HSY provided by Herrera et al.............................................. 136 VI.1.3. MSA-PM structure factor model provided by Hiroike ...................138 VI.2. Summary...

Huang, Yingqing

2005-08-29T23:59:59.000Z

318

BLINK: Pixel-Domain Encryption for Secure Document Idris Atakli  

E-Print Network [OSTI]

be a video cable with an integrated decoder box; its interface is a single switch by which the user canBLINK: Pixel-Domain Encryption for Secure Document Management Idris Atakli Department of Electrical. The primary application is delivery of confidential documents that can only be viewed by a specific machine

Chen, Yu

319

ROO: Involving Domain Experts in Authoring OWL Ronald Denaux  

E-Print Network [OSTI]

Authoring, Controlled Natural Language Interfaces, Evaluation of Ontology Building Tools, Geographical process and improve the quality of the resultant ontologies. Recently, controlled language (CL) interfaces domain experts' definition of ontologies in OWL by allowing them to author the ontology in a controlled

Dimitrova, Vania

320

IDENTIFICATION OF MATERIAL DAMAGE IN TWO DIMENSIONAL DOMAINS  

E-Print Network [OSTI]

IDENTIFICATION OF MATERIAL DAMAGE IN TWO DIMENSIONAL DOMAINS USING SQUID BASED NDE SYSTEM H on such problems entails quantitative nondestructive evaluation methods in SQUID-based NDE system [1]. It is well, SQUID based nondestructive evaluation (NDE) systems using injection current methods have been recently

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

IDENTIFICATION OF MATERIAL DAMAGE IN TWO DIMENSIONAL DOMAINS  

E-Print Network [OSTI]

IDENTIFICATION OF MATERIAL DAMAGE IN TWO DIMENSIONAL DOMAINS USING SQUID BASED NDE SYSTEM H#ort on such problems entails quantitative nondestructive evaluation methods in SQUID­based NDE system [1]. It is well nondestructive evaluation (NDE) systems using injection current methods have been recently developed [3, 4

322

Analyzing Parallelism and Domain Similarities in the MAREC Patent Corpus  

E-Print Network [OSTI]

Analyzing Parallelism and Domain Similarities in the MAREC Patent Corpus Katharina W}@cl.uni-heidelberg.de Abstract. Statistical machine translation of patents requires large a- mounts of sentence-parallel data. Translations of patent text often exist for parts of the patent document, namely title, abstract and claims

Riezler, Stefan

323

Catalytic Domain of Phosphoinositide-specific Phospholipase C (PLC)  

E-Print Network [OSTI]

Catalytic Domain of Phosphoinositide-specific Phospholipase C (PLC) MUTATIONAL ANALYSIS OF RESIDUES WITHIN THE ACTIVE SITE AND HYDROPHOBIC RIDGE OF PLC 1* (Received for publication, November 20, 1997 Institute, University of Dundee, Dundee DD1 4HN, United Kingdom Structural studies of phospholipase C 1 (PLC

Williams, Roger L.

324

AN AGGREGATIONBASED DOMAIN DECOMPOSITION PRECONDITIONER FOR GROUNDWATER FLOW \\Lambda  

E-Print Network [OSTI]

the standard finite element framework from [18,24]. The preconditioner also works well in the context of finiteAN AGGREGATION­BASED DOMAIN DECOMPOSITION PRECONDITIONER FOR GROUNDWATER FLOW \\Lambda E. W. JENKINS analysis of a two­level additive Schwarz method in which the coarse mesh basis is constructed

325

AN AGGREGATION-BASED DOMAIN DECOMPOSITION PRECONDITIONER FOR GROUNDWATER FLOW  

E-Print Network [OSTI]

. Our analysis uses the standard finite element framework from [18,24]. The preconditioner also works well in the context of finite differences, however, as some of the examples in £ 3 illustrateAN AGGREGATION-BASED DOMAIN DECOMPOSITION PRECONDITIONER FOR GROUNDWATER FLOW E. W. JENKINS ¡, C

326

Hybrid Powertrain Design Using a Domain-Specific Modeling Environment  

E-Print Network [OSTI]

Hybrid Powertrain Design Using a Domain- Specific Modeling Environment Wenzhong Gao1 , Sandeep environment is capable of rapidly assimilating new knowledge from experts and design database. Further, it can. As an example, the well-known worldwide recall in Spring 2002 of the BMW 745i was a direct result

Gray, Jeffrey G.

327

Analysis of transmission system faults in the phase domain  

E-Print Network [OSTI]

. With the advanced development of computers, there is a possibility to totally get rid of the sequence method. In this thesis, a short circuit analysis method based on phase domain is developed. After the three sequence admittance matrices of the system are built...

Zhu, Jun

2004-11-15T23:59:59.000Z

328

Databases on the Web: national web domain survey Denis Shestakov  

E-Print Network [OSTI]

, Aalto University Konemiehentie 2, Espoo, 02150 Finland denis.shestakov@aalto.fi ABSTRACT The deep Web of the deep Web by sampling one national web domain. We report some of our results ob- tained when surveying the Russian Web. The survey find- ings, namely the size estimates of the deep Web, could be useful for further

Hammerton, James

329

Precision Timed Machines  

E-Print Network [OSTI]

1.4 Precision Timed Machines . . . . .Precision Timed Machine 2.1precision timed (PRET) machine. pages 264–265, June 2007. [

Liu, Isaac Suyu

2012-01-01T23:59:59.000Z

330

Determinating Timing Channels in Statistically Multiplexed Clouds  

E-Print Network [OSTI]

Timing side-channels represent an insidious security challenge for cloud computing, because: (a) they enable one customer to steal information from another without leaving a trail or raising alarms; (b) only the cloud provider can feasibly detect and report such attacks, but the provider's incentives are not to; and (c) known general-purpose timing channel control methods undermine statistical resource sharing efficiency, and, with it, the cloud computing business model. We propose a new cloud architecture that uses provider-enforced deterministic execution to eliminate all timing channels internal to a shared cloud domain, without limiting internal resource sharing. A prototype determinism-enforcing hypervisor demonstrates that utilizing such a cloud might be both convenient and efficient. The hypervisor enables parallel guest processes and threads to interact via familiar shared memory and file system abstractions, and runs moderately coarse-grained parallel tasks as efficiently and scalably as current nond...

Aviram, Amittai; Ford, Bryan; Gummadi, Ramakrishna

2010-01-01T23:59:59.000Z

331

Radio Astronomical Polarimetry and High-Precision Pulsar Timing  

E-Print Network [OSTI]

A new method of matrix template matching is presented in the context of pulsar timing analysis. Pulse arrival times are typically measured using only the observed total intensity light curve. The new technique exploits the additional timing information available in the polarization of the pulsar signal by modeling the transformation between two polarized light curves in the Fourier domain. For a number of millisecond pulsars, arrival time estimates derived from polarimetric data are predicted to exhibit greater precision and accuracy than those derived from the total intensity alone. Furthermore, the transformation matrix produced during template matching may be used to calibrate observations of other point sources.

W. van Straten

2006-01-05T23:59:59.000Z

332

Stopbands in the existence domains of acoustic solitons  

SciTech Connect (OSTI)

A fully nonlinear Sagdeev pseudopotential approach is used to study the existence domain of fast mode ion-acoustic solitons in a three-species plasma composed of cold and warm adiabatic positive ion species and Boltzmann electrons. It is shown that for appropriate values of the cold-to-warm ion charge-to-mass ratio, ?, and the effective warm ion-to-electron temperature ratio, ?, there is a range in cold to warm ion charge density ratio, f, over which a stopband in soliton speed exists. Solitons do not propagate in the stopband, although they can occur for both higher and lower speeds. The stopbands are associated with a limiting curve of the existence domain that is double-valued in speed for a range of values of f. Analytical estimates of the upper and lower limits of ? and ? that support stopbands are found. It is suggested that, inter alia, the analysis should be applicable to the solar wind plasma.

Nsengiyumva, F., E-mail: franco.nseng@gmail.com; Hellberg, M. A., E-mail: hellberg@ukzn.ac.za; Mace, R. L., E-mail: macer@ukzn.ac.za [School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Verheest, F., E-mail: frank.verheest@ugent.be [School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B–9000 Gent (Belgium)

2014-10-15T23:59:59.000Z

333

Understanding domain registration abuses Scott E. Coull a,  

E-Print Network [OSTI]

Understanding domain registration abuses Scott E. Coull a, *, Andrew M. White b , Ting-Fang Yen c Carolina, Chapel Hill, NC 27599, USA c RSA Laboratories, Cambridge, MA 02140, USA a r t i c l e i n f o author. E-mail addresses: scott.coull@redjack.com (S.E. Coull), amw@cs.unc.edu (A.M. White), tingfang

Reiter, Michael

334

The Cerebellum, Timing, and Language: Implications for the Study of Dyslexia Richard B. Ivry, Timothy C. Justus, and Christina Middleton  

E-Print Network [OSTI]

The Cerebellum, Timing, and Language: Implications for the Study of Dyslexia Richard B. Ivry.), Dyslexia, Fluency, and the Brain (pp. 189-211). Timonium, MD: York Press. The functional domain among the developmental disorders associated with cerebellar dysfunction is dyslexia

Ivry, Rich

335

Phenomenological theory of a single domain wall in uniaxial trigonal ferroelectrics: Lithium niobate and lithium tantalate  

E-Print Network [OSTI]

Phenomenological theory of a single domain wall in uniaxial trigonal ferroelectrics: Lithium niobate and lithium tantalate David A. Scrymgeour and Venkatraman Gopalan Department of Materials Science, lithium niobate and lithium tantalate. The contributions to the domain- wall energy from polarization

Gopalan, Venkatraman

336

Current-driven Domain Wall Dynamics And Its Electric Signature In Ferromagnetic Nanowires  

E-Print Network [OSTI]

We study current-induced domain wall dynamics in a thin ferromagnetic nanowire. We derive the effective equations of domain wall motion, which depend on the wire geometry and material parameters. We describe the procedure to determine...

Liu, Yang

2012-10-19T23:59:59.000Z

337

A New Methodology for Frequency Domain Analysis of Wave Energy Converters with Periodically Varying Physical Parameters  

E-Print Network [OSTI]

A New Methodology for Frequency Domain Analysis of Wave Energy Converters with Periodically Varying Methodology for Frequency Domain Analysis of Wave Energy Converters with Periodically Varying Physical of Mechanical Engineering) ABSTRACT Within a wave energy converter's operational bandwidth, device operation

Victoria, University of

338

Structural genomics reveals EVE as a new ASCH/PUA-related domain...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

reveals EVE as a new ASCHPUA-related domain. Structural genomics reveals EVE as a new ASCHPUA-related domain. Abstract: We report on a number of proteins recently solved by NESG...

339

E-Print Network 3.0 - atp binding domain Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

domain Search Powered by Explorit Topic List Advanced Search Sample search results for: atp binding domain Page: << < 1 2 3 4 5 > >> 1 ATP Utilization by Yeast Replication Factor C...

340

Modulation Domain Spectral Subtraction for Speech Enhancement Kuldip Paliwal, Belinda Schwerin, Kamil Wojcicki  

E-Print Network [OSTI]

Modulation Domain Spectral Subtraction for Speech Enhancement Kuldip Paliwal, Belinda Schwerin- native to the acoustic domain for speech enhancement. More specifically, we wish to determine how achieves better back- ground noise reduction than the MMSE method. Index Terms: speech enhancement

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

E-Print Network 3.0 - adam22 pro domain Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2 pro domain Search Powered by Explorit Topic List Advanced Search Sample search results for: adam22 pro domain Page: << < 1 2 3 4 5 > >> 1 Role of Leucine-Rich Repeat Proteins in...

342

Cross-domain comparison of quantitative technology improvement using patent derived characteristics  

E-Print Network [OSTI]

This thesis compares the performance improvement rates of 28 technological domains with characteristics derived from the patents of the domains, seeking to objectively test theories of how and why technologies change over ...

Benson, Christopher Lee

2014-01-01T23:59:59.000Z

343

E-Print Network 3.0 - apiai domain se Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

- Matematiska institutionen, Uppsala Universitet Collection: Mathematics 42 Service Oriented Architecture Introduction and Research Issues Summary: Domain Area Context Business...

344

Proceedings of Symposia in Pure Mathematics Nodal domains on graphs -How to count them and why?  

E-Print Network [OSTI]

by the pioneering work of Chladni on the nodal structures of vibrating plates. Counting nodal domains started

Smilansky, Uzy

345

Propagating and reflecting of spin wave in permalloy nanostrip with 360° domain wall  

SciTech Connect (OSTI)

By micromagnetic simulation, we investigated the interaction between propagating spin wave (or magnonic) and a 360° domain wall in a nanostrip. It is found that propagating spin wave can drive a 360° domain wall motion, and the velocity and direction are closely related to the transmission coefficient of the spin wave of the domain wall. When the spin wave passes through the domain wall completely, the 360° domain wall moves toward the spin wave source. When the spin wave is reflected by the domain wall, the 360° domain wall moves along the spin wave propagation direction. Moreover, when the frequency of the spin wave is coincident with that of the 360° domain wall normal mode, the 360° domain wall velocity will be resonantly enhanced no matter which direction the 360 DW moves along. On the other hand, when the spin wave is reflected from the moving 360° domain wall, we observed the Doppler effect clearly. After passing through a 360° domain wall, the phase of the spin wave is changed, and the phase shift is related to the frequency. Nevertheless, phase shift could be manipulated by the number of 360° domain walls that spin wave passing through.

Zhang, Senfu; Mu, Congpu; Zhu, Qiyuan; Zheng, Qi; Liu, Xianyin; Wang, Jianbo; Liu, Qingfang, E-mail: liuqf@lzu.edu.cn [Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000 (China)

2014-01-07T23:59:59.000Z

346

A Study of Revenue Flows in Packet Networks under Multiple Administrative Domains  

E-Print Network [OSTI]

A Study of Revenue Flows in Packet Networks under Multiple Administrative Domains Saadullah Tareenx that they usually only consider a single network and always consider a single administrative domain when for a detailed study of more realistic networks under multiple administrative domains. The interac- tions between

347

Reflexive Scott domains are not complete for the extensional lambda calculus Alberto Carraro  

E-Print Network [OSTI]

for the -calculus, i.e., there are equations not in which hold in all extensional reflexive Scott domains. (ii). The following are the main results of the paper: (i) Extensional reflexive Scott domains are not complete, Reflexive Scott domains, Filter models. I. INTRODUCTION Lambda theories are congruences on the set of -terms

Salibra, Antonino

348

Molecular dissection of the roles of nucleotide binding and hydrolysis in dynein's AAA domains  

E-Print Network [OSTI]

Molecular dissection of the roles of nucleotide binding and hydrolysis in dynein's AAA domains (ATPase associated with various cellular activities) domains that are thought to bind nucleotide; the role of nucleotide binding and hydrolysis in each of these four AAA domains has constituted an important and unre

Vale, Ronald D.

349

Phase-field simulation of strain-induced domain switching in magnetic thin films  

E-Print Network [OSTI]

Phase-field simulation of strain-induced domain switching in magnetic thin films Jia-Mian Hu, G of the Bloch point in a magnetic film with strong uniaxial magnetic anisotropy Low Temp. Phys. 37, 690 (2011) Evolution of magnetic bubble domains in manganite films Appl. Phys. Lett. 99, 042503 (2011) 360° domain wall

Chen, Long-Qing

350

In-medium effects for nuclear matter in the Fermi energy domain D. Durand,1  

E-Print Network [OSTI]

In-medium effects for nuclear matter in the Fermi energy domain O. Lopez,1 D. Durand,1 G. Lehaut,1 of nuclear reactions in the Fermi energy domain. I. INTRODUCTION Transport properties in nuclear matter energy domain, transport features should exhibit the in- terplay between mean-field (nuclear degrees

Boyer, Edmond

351

Compactness of the ? ? -Neumann Operator on the Intersection Domains in ?^(N)  

E-Print Network [OSTI]

) domains satisfies McNeal's property ( P ?). More precisely, let ?_(1) and ?_(2) be bounded (not necessarily smooth) pseudoconvex domains in ?^(n) which intersect each other in a domain ?. If the ? ?-Neumann operators N_(q)^(?_(1)) and N_(q)^(?_(2...

Ayyuru, Mustafa

2014-07-10T23:59:59.000Z

352

Numerical methods for extracting edge stress intensity functions in anisotropic three-dimensional domains  

E-Print Network [OSTI]

) depending on the given body forces and tractions on the other hand. The eigen-pairs (eigen-values and eigen domains is provided in many prior publications [21,12,9,2]. A semi-analytic approach for the eigen domains in the vicinity of an edge is represented by a family of eigen-functions (similar to 2-D domains

Yosibash, Zohar

353

Real-time processing of a long perimeter fiber optic intrusion system  

E-Print Network [OSTI]

This thesis reports on recent advances made in real-time intruder detection for an intrusion system developed at Texas A&M University that utilizes a phase-sensitive optical time-domain reflectometer. The system uses light pulses from a highly...

Snider, William Timothy

2009-09-30T23:59:59.000Z

354

TQuEST: Threshold Query Execution for Large Sets of Time Series  

E-Print Network [OSTI]

. environmental air pollution which has gained rapidly increasing attention by many European research projects million time series, each representing the daily course of air pollution parameters1 . It is important data mining in time series databases is essential in many application domains as for instance

Kriegel, Hans-Peter

355

OnTimeSecure: Secure Middleware for Federated Network Performance Monitoring  

E-Print Network [OSTI]

- driven access to related federated Network Performance Mon- itoring (NPM) services are important federated authorization entitlement policies for timely orches- tration of NPM services. On measurement resources. We validate OnTimeSecure in a federated multi-domain NPM infrastructure by performing

Calyam, Prasad

356

ASSESSMENT OF RESPONSE TIME OF SAR PROBE Franois GALLEE, Gaetan GUEVEL, Christian PERSON  

E-Print Network [OSTI]

ASSESSMENT OF RESPONSE TIME OF SAR PROBE François GALLEE, Gaetan GUEVEL, Christian PERSON Institut domain with a TDMA frame of 4.615ms divided in 8 time slot of 577µs. Then from a CW calibration and a mean value measurement with a high sensitivity multimeter, it is possible to measure the SAR (Specific

Paris-Sud XI, Université de

357

FAST SOLA-BASED TIME SCALE MODIFICATION USING MODIFIED ENVELOPE MATCHING  

E-Print Network [OSTI]

FAST SOLA-BASED TIME SCALE MODIFICATION USING MODIFIED ENVELOPE MATCHING Peter H. W. Wong*, Oscar C Overlap-and- Add (SOLA) is a time-domain TSM algorithm known to achieve good speech and audio quality. One problem of SOLA is that it requires a large amount of computation. In this paper, we propose a technique

Wong, Peter Hon-Wah

358

Modeling and rendering heterogeneous fog in real-time using B-Spline wavelets  

E-Print Network [OSTI]

Modeling and rendering heterogeneous fog in real-time using B-Spline wavelets Anthony Giroud method to render heterogeneous fog in real-time. The extinction function of our fog, related to its to obtain a decomposition in both space and frequency domains. A grid traversal is used to render the fog

Paris-Sud XI, Université de

359

The Australian domain name registration system : a more efficient system for the promotion of liberalisation, consumer protection and growth.  

E-Print Network [OSTI]

??This thesis is about the Australian domain name system and, in particular, the principles governing the registration of domain names in the '.au' country code… (more)

Ng, Jenny Swee Gaik

2009-01-01T23:59:59.000Z

360

Low-coherent WDM reflectometry for accurate fiber length monitoring  

E-Print Network [OSTI]

A fiber-optic low-coherent reflectometer was developed to accurately monitor fiber length variation. A large length-coverage range was obtained by using a fiber Bragg grating array in a wavelength-division-multiplexing ...

Hui, Rongqing; Thomas, J.; Allen, Christopher Thomas; Fu, B.; Gao, S.

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Optical low coherence reflectometry for the measurement of collagen thickness  

E-Print Network [OSTI]

of the Raw Interferometric Signal: Set l. . . . . . . . . . . 74 Figure 33. High SNR Collagen Peak of the Raw Interferometric Signal: Set 2 Figure 34. Low SNR Collagen Peak of the Raw Interferometric Signal Set 2 Figure 35 Non-Uniform Translation: SLD..., macular edema, central serous chorioetinopathy and detachments in the retina and epithelium were studied and good results were attained. ' ' One of the earlier studies performed in 1991 used a fiber optic Michelson interferometer with a 830 nm SLD...

Merchant, Jean Carol

1998-01-01T23:59:59.000Z

362

Neutron Reflectometry Studies of the Adsorbed Structure of the Amelogenin,  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the Contributions andDataNational Library of1, 2007Transmission toBeamN u'..Evolution

363

LANSCE | Lujan Center | Highlights | Neutron Reflectometry (NR) at Lujan  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickrinformationPostdocs &Jeff Yarbroughdevelopment,Call forCenter

364

Energy dissipation in single-domain ferromagnetic nanoparticles: Dynamical approach  

E-Print Network [OSTI]

We study, both analytically and numerically, the phenomenon of energy dissipation in single-domain ferromagnetic nanoparticles driven by an alternating magnetic field. Our interest is focused on the power loss resulting from the Landau-Lifshitz-Gilbert equation, which describes the precessional motion of the nanoparticle magnetic moment. We determine the power loss as a function of the field amplitude and frequency and analyze its dependence on different regimes of forced precession induced by circularly and linearly polarized magnetic fields. The conditions to maximize the nanoparticle heating are also analyzed.

T. V. Lyutyy; S. I. Denisov; A. Yu. Peletskyi; C. Binns

2015-02-14T23:59:59.000Z

365

Two-dimensional random walk in a bounded domain  

E-Print Network [OSTI]

In a recent Letter Ciftci and Cakmak [EPL 87, 60003 (2009)] showed that the two dimensional random walk in a bounded domain, where walkers which cross the boundary return to a base curve near origin with deterministic rules, can produce regular patterns. Our numerical calculations suggest that the cumulative probability distribution function of the returning walkers along the base curve is a Devil's staircase, which can be explained from the mapping of these walks to a non-linear stochastic map. The non-trivial probability distribution function(PDF) is a universal feature of CCRW characterized by the fractal dimension d=1.75(0) of the PDF bounding curve.

Mahashweta Basu; P. K. Mohanty

2009-10-30T23:59:59.000Z

366

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed NewcatalystNeutron scattering characterizes dynamics in polymerDynein Motor Domain

367

Stochastic Domain-Wall Depinning in Magnetic Nanowires  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSiteNeutron Scattering4American'! I ,Stochastic Domain-Wall

368

Two-dimensional random walk in a bounded domain  

E-Print Network [OSTI]

In a recent Letter Ciftci and Cakmak [EPL 87, 60003 (2009)] showed that the two dimensional random walk in a bounded domain, where walkers which cross the boundary return to a base curve near origin with deterministic rules, can produce regular patterns. Our numerical calculations suggest that the cumulative probability distribution function of the returning walkers along the base curve is a Devil's staircase, which can be explained from the mapping of these walks to a non-linear stochastic map. The non-trivial probability distribution function(PDF) is a universal feature of CCRW characterized by the fractal dimension d=1.75(0) of the PDF bounding curve.

Basu, Mahashweta

2010-01-01T23:59:59.000Z

369

Anti-phase domains in cubic GaN  

SciTech Connect (OSTI)

The existence of anti-phase domains in cubic GaN grown on 3C-SiC/Si (001) substrates by plasma-assisted molecular beam epitaxy is reported. The influence of the 3C-SiC/Si (001) substrate morphology is studied with emphasis on the anti-phase domains (APDs). The GaN nucleation is governed by the APDs of the substrate, resulting in equal plane orientation and the same anti-phase boundaries. The presence of the APDs is independent of the GaN layer thickness. Atomic force microscopy surface analysis indicates lateral growth anisotropy of GaN facets in dependence of the APD orientation. This anisotropy can be linked to Ga and N face types of the {l_brace}111{r_brace} planes, similar to observations of anisotropic growth in 3C-SiC. In contrast to 3C-SiC, however, a difference in GaN phase composition for the two types of APDs can be measured by electron backscatter diffraction, {mu}-Raman and cathodoluminescence spectroscopy.

Maria Kemper, Ricarda; Schupp, Thorsten; Haeberlen, Maik; Lindner, Joerg; Josef As, Donat [University of Paderborn, Department of Physics, Warburger Str. 100, D-33098 Paderborn (Germany); Niendorf, Thomas; Maier, Hans-Juergen [University of Paderborn, Lehrstuhl fuer Werkstoffkunde, Pohlweg 47-49, D-33098 Paderborn (Germany); Dempewolf, Anja; Bertram, Frank; Christen, Juergen [University of Magdeburg, Institut fuer Festkoerperphysik, P.O. Box 4120, D-39016 Magdeburg (Germany); Kirste, Ronny; Hoffmann, Axel [Technische Universitaet Berlin, Institute of Solid State Physics, Hardenbergstr. 36, D-10623 Berlin (Germany)

2011-12-15T23:59:59.000Z

370

Tips for implementing multigrid methods on domains containing holes  

E-Print Network [OSTI]

As part of our development of a computer code to perform 3D `constrained evolution' of Einstein's equations in 3+1 form, we discuss issues regarding the efficient solution of elliptic equations on domains containing holes (i.e., excised regions), via the multigrid method. We consider as a test case the Poisson equation with a nonlinear term added, as a means of illustrating the principles involved, and move to a "real world" 3-dimensional problem which is the solution of the conformally flat Hamiltonian constraint with Dirichlet and Robin boundary conditions. Using our vertex-centered multigrid code, we demonstrate globally second-order-accurate solutions of elliptic equations over domains containing holes, in two and three spatial dimensions. Keys to the success of this method are the choice of the restriction operator near the holes and definition of the location of the inner boundary. In some cases (e.g. two holes in two dimensions), more and more smoothing may be required as the mesh spacing decreases to zero; however for the resolutions currently of interest to many numerical relativists, it is feasible to maintain second order convergence by concentrating smoothing (spatially) where it is needed most. This paper, and our publicly available source code, are intended to serve as semi-pedagogical guides for those who may wish to implement similar schemes.

Scott H. Hawley; Richard A. Matzner

2003-11-18T23:59:59.000Z

371

Phylogenomic and functional domain analysis of polyketide synthases in Fusarium  

SciTech Connect (OSTI)

Fusarium species are ubiquitous in nature, cause a range of plant diseases, and produce a variety of chemicals often referred to as secondary metabolites. Although some fungal secondary metabolites affect plant growth or protect plants from other fungi and bacteria, their presence in grain based food and feed is more often associated with a variety of diseases in plants and in animals. Many of these structurally diverse metabolites are derived from a family of related enzymes called polyketide synthases (PKSs). A search of genomic sequence of Fusarium verticillioides, F. graminearum, F. oxysporum and Nectria haematococca (anamorph F. solani) identified a total of 58 PKS genes. To gain insight into how this gene family evolved and to guide future studies, we conducted a phylogenomic and functional domain analysis. The resulting genealogy suggested that Fusarium PKSs represent 34 different groups responsible for synthesis of different core metabolites. The analyses indicate that variation in the Fusarium PKS gene family is due to gene duplication and loss events as well as enzyme gain-of-function due to the acquisition of new domains or of loss-of-function due to nucleotide mutations. Transcriptional analysis indicate that the 16 F. verticillioides PKS genes are expressed under a range of conditions, further evidence that they are functional genes that confer the ability to produce secondary metabolites.

Brown, Daren W.; Butchko, Robert A.; Baker, Scott E.; Proctor, Robert H.

2012-02-01T23:59:59.000Z

372

Investigation of dominant spin wave modes by domain walls collision  

SciTech Connect (OSTI)

Spin wave emission due to field-driven domain wall (DW) collision has been investigated numerically and analytically in permalloy nanowires. The spin wave modes generated are diagonally symmetric with respect to the collision point. The non-propagating mode has the highest amplitude along the middle of the width. The frequency of this mode is strongly correlated to the nanowire geometrical dimensions and is independent of the strength of applied field within the range of 0.1?mT to 1?mT. For nanowire with film thickness below 5?nm, a second spin wave harmonic mode is observed. The decay coefficient of the spin wave power suggests that the DWs in a memory device should be at least 300?nm apart for them to be free of interference from the spin waves.

Ramu, M.; Purnama, I.; Goolaup, S.; Chandra Sekhar, M.; Lew, W. S., E-mail: wensiang@ntu.edu.sg [School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore)

2014-06-28T23:59:59.000Z

373

Crossed-ratchet effects and domain wall geometrical pinning  

E-Print Network [OSTI]

The motion of a domain wall in a two dimensional medium is studied taking into account the internal elastic degrees of freedom of the wall and geometrical pinning produced both by holes and sample boundaries. This study is used to analyze the geometrical conditions needed for optimizing crossed ratchet effects in periodic rectangular arrays of asymmetric holes, recently observed experimentally in patterned ferromagnetic films. Geometrical calculations and numerical simulations have been used to obtain the anisotropic critical fields for depinning flat and kinked walls in rectangular arrays of triangles. The aim is to show with a generic elastic model for interfaces how to build a rectifier able to display crossed ratchet effects or effective potential landscapes for controlling the motion of interfaces or invasion fronts.

V. I. Marconi; A. B. Kolton; J. A. Capitan; J. A. Cuesta; A. Perez-Junquera; M. Velez; J. I. Martin; J. M. R. Parrondo

2010-12-25T23:59:59.000Z

374

AMRNodeElliptic user guide: On irregular problem domains  

SciTech Connect (OSTI)

This document describes an extension to the Chombo package [CGL+00] for solving elliptic equations using adaptive mesh refinement on multiple levels with node-centered data on non-rectangular domains. See the AMRNodeElliptic design document [McC02] for a description of the algorithms used. Chapter 2 describes the subroutines that the user must supply to describe the geometry and the operator. Chapter 3 describes the class NodeFArrayBox and functions that use this class to manipulate node-centered data. Interfaces for elliptic equation solvers are described in chapter 4. Some internal classes of the solvers are described in chapter 5. User interfaces for physical boundary conditions are described in chapter 6. The AMRNodeElliptic package requires that Chombo library be installed. See chapter 1 of the Chombo design document [CGL+00] for requirements and installation of Chombo.

McCorquodale, Peter

2003-04-15T23:59:59.000Z

375

Crystal Structures of the Outer Membrane Domain of Intimin and Invasin from Enterohemorrhagic E. coli and Enteropathogenic Y. pseudotuberculosis  

SciTech Connect (OSTI)

Intimins and invasins are virulence factors produced by pathogenic Gram-negative bacteria. They contain C-terminal extracellular passenger domains that are involved in adhesion to host cells and N-terminal {beta} domains that are embedded in the outer membrane. Here, we identify the domain boundaries of an E. coli intimin {beta} domain and use this information to solve its structure and the {beta} domain structure of a Y. pseudotuberculosis invasin. Both {beta} domain structures crystallized as monomers and reveal that the previous range of residues assigned to the {beta} domain also includes a protease-resistant domain that is part of the passenger. Additionally, we identify 146 nonredundant representative members of the intimin/invasin family based on the boundaries of the highly conserved intimin and invasin {beta} domains. We then use this set of sequences along with our structural data to find and map the evolutionarily constrained residues within the {beta} domain.

Fairman, James W.; Dautin, Nathalie; Wojtowicz, Damian; Liu, Wei; Noinaj, Nicholas; Barnard, Travis J.; Udho, Eshwar; Przytycka, Teresa M.; Cherezov, Vadim; Buchanan, Susan K. (CUA); (Einstein); (NIH); (Scripps)

2012-12-10T23:59:59.000Z

376

Noncommutative Two Time Physics  

E-Print Network [OSTI]

We present a classical formalism describing two-time physics with Abelian canonical gauge field backgrounds. The formalism can be used as a starting point for the construction of an interacting quantized two-time physics theory in a noncommutative soace-time.

W. Chagas-Filho

2006-04-03T23:59:59.000Z

377

Asia Times -Search Asia  

E-Print Network [OSTI]

Asia Times - Search Asia Times Advanced Search Southeast Asia Scapegoats for Indonesia's timber://www.atimes.com/atimes/Southeast_Asia/EI19Ae01.html (1 of 4)9/4/2007 3:01:50 PM Search #12;Asia Times - rather than on the nationwide band

378

Asia Times -Search Asia  

E-Print Network [OSTI]

Asia Times - Search Asia Times Advanced Search Southeast Asia Scapegoats for Indonesia's timber://www.atimes.com/atimes/Southeast_Asia/EI19Ae01.html (1 of 4)9/4/2007 12:55:07 PM Search #12;Asia Times - rather than on the nationwide band

379

Comparison between Pseudo-Spectral Time Domain and Discrete Dipole Approximation Simulations for Single-scattering Properties of Particles  

E-Print Network [OSTI]

-scattering properties. We used a spherical model for this study because the analytical solution was given by the Lorenz-Mie theory. Previous studies have found that at refractive indices between 1.2 and 1.5, PSTD computed the single-scattering properties of spherical...

Podowitz, Derek Ian

2013-08-05T23:59:59.000Z

380

Application of the discontinuous Galerkin time domain method in the simulation of the optical properties of dielectric particles  

E-Print Network [OSTI]

) and longwave (infrared) cases are considered, with particle size parameters 50 and 100. Ice in shortwave and longwave cases is absorptive and non-absorptive, respectively. The comparisons between DG solutions and the exact solutions in computing the optical...

Tang, Guanglin

2012-07-16T23:59:59.000Z

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


381

Use of Terahertz Time-Domain Spectroscopy for Cocrystal Characterisation and Quantitative Monitoring of Mechanochemical Cocrystal Formation  

E-Print Network [OSTI]

selected t0e previousl9 studied s9stem of p0enaOine (phen) and mesaconic acid (mes)11 . ^rinding of an e

de Gispert, AdriĂ 

382

1100 IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, VOL. 50, NO. 9, SEPTEMBER 2003 Finite-Element Time-Domain Algorithms for  

E-Print Network [OSTI]

. A number of theoretical and empirical models are available to ex- plain the large volume of measured data corresponding author. *N. S. Stoykov is with the Rehabilitation Institute of Chicago, IL 60611 USA, and with the Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL 60611 USA (e-mail: n

383

An iterative finite element time-domain method for simulating three-dimensional electromagnetic diffusion in earth  

E-Print Network [OSTI]

of an axially symmetric earth for vertical magnetic dipoleDevelopment Grants from Earth Sciences Division. Editor Dr.electromagnetic diffusion in earth Evan Schankee Um, 1 Jerry

Um, E.S.

2013-01-01T23:59:59.000Z

384

July 15, 2004 / Vol. 29, No. 14 / OPTICS LETTERS 1617 Waveguide terahertz time-domain spectroscopy of nanometer  

E-Print Network [OSTI]

in hydrophilic silica aerogel was recently reported10 for which the adsorbed water has remarkably different

385

May 1, 2004 / Vol. 29, No. 9 / OPTICS LETTERS 1031 Terahertz time-domain spectroscopy of submonolayer water  

E-Print Network [OSTI]

of submonolayer water adsorption in hydrophilic silica aerogel Jiangquan Zhang and Daniel Grischkowsky School in hydrophilic silica aerogel. The adsorbed water is in submonolayer form and shows properties of index of America OCIS codes: 300.6490, 320.7150. Silica aerogels are remarkable artificial materials combining low

386

Time-Domain TeraHertz Spectroscopy and Observational Probes of Prebiotic Interstellar Gas and Ice Chemistry  

E-Print Network [OSTI]

!) for being a second family away from my home. #12;v Three individuals bear special recognition, Jacob, Matt, Xander, Masha, Coco, Alex, and Dana have been fantastic to work with and great friends

Winfree, Erik

387

Shape of isolated domains in lithium tantalate single crystals at elevated temperatures  

SciTech Connect (OSTI)

The shape of isolated domains has been investigated in congruent lithium tantalate (CLT) single crystals at elevated temperatures and analyzed in terms of kinetic approach. The obtained temperature dependence of the growing domain shape in CLT including circular shape at temperatures above 190?°C has been attributed to increase of relative input of isotropic ionic conductivity. The observed nonstop wall motion and independent domain growth after merging in CLT as opposed to stoichiometric lithium tantalate have been attributed to difference in wall orientation. The computer simulation has confirmed applicability of the kinetic approach to the domain shape explanation.

Shur, V. Ya., E-mail: vladimir.shur@usu.ru; Akhmatkhanov, A. R.; Baturin, I. S. [Ferroelectric Laboratory, Institute of Natural Sciences, Ural Federal University, 620000 Ekaterinburg (Russian Federation) [Ferroelectric Laboratory, Institute of Natural Sciences, Ural Federal University, 620000 Ekaterinburg (Russian Federation); Labfer Ltd., 620014 Ekaterinburg (Russian Federation); Chezganov, D. S.; Lobov, A. I.; Smirnov, M. M. [Ferroelectric Laboratory, Institute of Natural Sciences, Ural Federal University, 620000 Ekaterinburg (Russian Federation)] [Ferroelectric Laboratory, Institute of Natural Sciences, Ural Federal University, 620000 Ekaterinburg (Russian Federation)

2013-12-09T23:59:59.000Z

388

Direct writing of ferroelectric domains on strontium barium niobate crystals using focused ultraviolet laser light  

SciTech Connect (OSTI)

We report ferroelectric domain inversion in strontium barium niobate (SBN) single crystals by irradiating the surface locally with a strongly focused ultraviolet (UV) laser beam. The generated domains are investigated using piezoresponse force microscopy. We propose a simple model that allows predicting the domain width as a function of the irradiation intensity, which indeed applies for both SBN and LiNbO{sub 3}. Evidently, though fundamentally different, the domain structure of both SBN and LiNbO{sub 3} can be engineered through similar UV irradiation.

Boes, Andreas; Crasto, Tristan; Steigerwald, Hendrik; Mitchell, Arnan [School of Electrical and Computer Engineering and ARC Center for Ultra-High Bandwidth Devices for Optical Systems (CUDOS), RMIT University, Melbourne, Victoria 3001 (Australia)] [School of Electrical and Computer Engineering and ARC Center for Ultra-High Bandwidth Devices for Optical Systems (CUDOS), RMIT University, Melbourne, Victoria 3001 (Australia); Wade, Scott [Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria 3122 (Australia)] [Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria 3122 (Australia); Frohnhaus, Jakob; Soergel, Elisabeth [Institute of Physics, University of Bonn, Wegelerstr. 8, 53115 Bonn (Germany)] [Institute of Physics, University of Bonn, Wegelerstr. 8, 53115 Bonn (Germany)

2013-09-30T23:59:59.000Z

389

E-Print Network 3.0 - amphiphysin-1 sh3 domain Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

important for autoinhibition... , with the fifth domain (SH3(E)) being sufficient for the bulk of the autoinhibitory effect. This ... Source: Lim, Wendell - Departments of Cellular...

390

E-Print Network 3.0 - adaptive inter-domain pce Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sciences 4 Path Computation Element in Telecom Networks: Recent Developments and Standardization Activities Summary: the candidate inter-domain connections. Once this answer is...

391

The Plasma Membrane of the Cyanobacterium Gloeobacter violaceus Contains Segregated Bioenergetic Domains C W  

E-Print Network [OSTI]

The Plasma Membrane of the Cyanobacterium Gloeobacter violaceus Contains Segregated Bioenergetic, in which both the photosynthetic and the respiratory complexes are concentrated. These bioenergetic domains

Roegner, Matthias

392

Existence and uniqueness of domain wall solitons in a Maxwell–Chern–Simons model  

SciTech Connect (OSTI)

We present some sharp existence and uniqueness theorems for the domain wall solutions of the basic governing equations of a self-dual Maxwell–Chern–Simons model.

Zhang, Ruifeng [Institute of Contemporary Mathematics, Henan University, Kaifeng 475001 (China) [Institute of Contemporary Mathematics, Henan University, Kaifeng 475001 (China); College of Mathematics and Information Science, Henan University, Kaifeng 475001 (China); Li, Fangfang [College of Mathematics and Information Science, Henan University, Kaifeng 475001 (China)] [College of Mathematics and Information Science, Henan University, Kaifeng 475001 (China)

2014-02-15T23:59:59.000Z

393

E-Print Network 3.0 - amino-terminal extracellular domain Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for: amino-terminal extracellular domain Page: << < 1 2 3 4 5 > >> 1 DEVELOPMENTAL BIOLOGY 136,97-103 (1989) The Mechanism of Precartilage Mesenchymal Condensation: A Major...

394

Hamilton-Jacobi Theory for Optimal Control Problems on Stratified Domains.  

E-Print Network [OSTI]

??This thesis studies optimal control problems on stratified domains. We first establish a known proximal Hamilton-Jacobi characterization of the value function for problems with Lipschitz… (more)

Barnard, Richard Charles

2010-01-01T23:59:59.000Z

395

X-ray imaging of extended magnetic domain walls in Ni80Fe20 wires  

SciTech Connect (OSTI)

We have used magnetic transmission X-ray microscopy to image magnetization configurations in 700 nm wide Ni{sub 80}Fe{sub 20} planar wires attached to 'nucleation' pads Domain walls were observed to inject only across half of the wire width but extend to several micrometers in length. Magnetostatic interactions with adjacent wires caused further unusual domain wall behavior. Micromagnetic modeling suggests the extended walls have Neel-like structure along their length and indicates weaker exchange coupling than is often assumed. These observations explain previous measurements of domain wall injection and demonstrate that magnetic domain walls in larger nanowires cannot always be considered as localized entities.

Basu, S.; Fry, P. W.; Allwood, D. A.; Bryan, M. T.; Gibbs, M. R. J.; Schrefl, T.; Im, M.-Y.; Fischer, P.

2009-06-20T23:59:59.000Z

396

The Importance of Domain Size and Purity in High-Efficiency Organic...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The Importance of Domain Size and Purity in High-Efficiency Organic Solar Cells Print The efficiency of polymerorganic photovoltaic cells hinges on excitons-electronhole pairs...

397

E-Print Network 3.0 - apical domain control Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

apical and basolateral domains (Fig. 2G... examined whether PVF1 is sequestered following secretion, or free to diffuse within the ... Source: Shilo, Benny - Department of...

398

High-frequency programmable acoustic wave device realized through ferroelectric domain engineering  

SciTech Connect (OSTI)

Surface acoustic wave devices are extensively used in contemporary wireless communication devices. We used atomic force microscopy to form periodic macroscopic ferroelectric domains in sol-gel deposited lead zirconate titanate, where each ferroelectric domain is composed of many crystallites, each of which contains many microscopic ferroelastic domains. We examined the electro-acoustic characteristics of the apparatus and found a resonator behavior similar to that of an equivalent surface or bulk acoustic wave device. We show that the operational frequency of the device can be tailored by altering the periodicity of the engineered domains and demonstrate high-frequency filter behavior (>8?GHz), allowing low-cost programmable high-frequency resonators.

Ivry, Yachin, E-mail: ivry@mit.edu, E-mail: cd229@eng.cam.ac.uk; Wang, Nan; Durkan, Colm, E-mail: ivry@mit.edu, E-mail: cd229@eng.cam.ac.uk [Nanoscience Centre, University of Cambridge, 11 JJ Thomson Avenue, Cambridge CB3 0FF (United Kingdom)

2014-03-31T23:59:59.000Z

399

The Dwell Time of Electron Tunneling Through a Double Barrier in the Presence of Rashba SOI  

SciTech Connect (OSTI)

Some aspects related to the influence of the Rashba spin-orbit interaction (SOI) on the dwell time spent by the electrons in an asymmetric double barrier are analyzed. It is revealed that in the presence of the Rashba SOI, a difference between the dwell times associated to the spin-up and spin-down species can be obtained. This opens the way to a spin filtration in the time domain.

Baltateanu, Doru-Marcel [West University of Timisoara, Faculty of Physics, Bd. V. Parvan, No.4, 300223, Timisoara (Romania)

2011-10-03T23:59:59.000Z

400

Time-resolved fluorescence decay measurements for flowing particles  

DOE Patents [OSTI]

Time-resolved fluorescence decay measurements for flowing particles. An apparatus and method for the measurement and analysis of fluorescence for individual cells and particles in flow are described, wherein the rapid measurement capabilities of flow cytometry and the robust measurement and analysis procedures of time-domain fluorescence lifetime spectroscopy are combined. A pulse-modulated cw laser is employed for excitation of the particles. The characteristics and the repetition rate of the excitation pulses can be readily adjusted to accommodate for fluorescence decays having a wide range of lifetimes.

Deka, Chiranjit (Miami, FL); Steinkamp, John A. (Los Alamos, NM)

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Time-resolved fluorescence decay measurements for flowing particles  

DOE Patents [OSTI]

Time-resolved fluorescence decay measurements are disclosed for flowing particles. An apparatus and method for the measurement and analysis of fluorescence for individual cells and particles in flow are described, wherein the rapid measurement capabilities of flow cytometry and the robust measurement and analysis procedures of time-domain fluorescence lifetime spectroscopy are combined. A pulse-modulated CW laser is employed for excitation of the particles. The characteristics and the repetition rate of the excitation pulses can be readily adjusted to accommodate for fluorescence decays having a wide range of lifetimes. 12 figs.

Deka, C.; Steinkamp, J.A.

1999-06-01T23:59:59.000Z

402

Matter: Space without Time  

E-Print Network [OSTI]

While Quantum Gravity remains elusive and Quantum Field Theory retains the interpretational difficulties of Quantum Mechanics, we have introduced an alternate approach to the unification of particles, fields, space and time, suggesting that the concept of matter as space without time provides a framework which unifies matter with spacetime and in which we anticipate the development of complete theories (ideally a single unified theory) describing observed 'particles, charges, fields and forces' solely with the geometry of our matter-space-time universe.

Yousef Ghazi-Tabatabai

2012-11-19T23:59:59.000Z

403

Intrinsic Time Quantum Geometrodynamics  

E-Print Network [OSTI]

Quantum Geometrodynamics with intrinsic time development and momentric variables is presented. An underlying SU(3) group structure at each spatial point regulates the theory. The intrinsic time behavior of the theory is analyzed, together with its ground state and primordial quantum fluctuations. Cotton-York potential dominates at early times when the universe was small; the ground state naturally resolves Penrose's Weyl Curvature Hypothesis, and thermodynamic and gravitational `arrows of time' point in the same direction. Ricci scalar potential corresponding to Einstein's General Relativity emerges as a zero-point energy contribution. A new set of fundamental commutation relations without Planck's constant emerges from the unification of Gravitation and Quantum Mechanics.

Eyo Eyo Ita III; Chopin Soo; Hoi-Lai Yu

2015-02-06T23:59:59.000Z

404

Intrinsic Time Quantum Geometrodynamics  

E-Print Network [OSTI]

Quantum Geometrodynamics with intrinsic time development and momentric variables is presented. An underlying SU(3) group structure at each spatial point regulates the theory. The intrinsic time behavior of the theory is analyzed, together with its ground state and primordial quantum fluctuations. Cotton-York potential dominates at early times when the universe was small; the ground state naturally resolves Penrose's Weyl Curvature Hypothesis, and thermodynamic and gravitational `arrows of time' point in the same direction. Ricci scalar potential corresponding to Einstein's General Relativity emerges as a zero-point energy contribution. A new set of fundamental canonical commutation relations without Planck's constant emerges from the unification of Gravitation and Quantum Mechanics.

Eyo Eyo Ita III; Chopin Soo; Hoi-Lai Yu

2015-01-26T23:59:59.000Z

405

Ultra-wideband directional sampler  

DOE Patents [OSTI]

The Ultra-Wideband (UWB) Directional Sampler is a four port device that combines the function of a directional coupler with a high speed sampler. Two of the four ports operate at a high sub-nanosecond speed, in "real time", and the other two ports operate at a slow millisecond-speed, in "equivalent time". A signal flowing inbound to either of the high speed ports is sampled and coupled, in equivalent time, to the adjacent equivalent time port while being isolated from the opposite equivalent time port. A primary application is for a time domain reflectometry (TDR) situation where the reflected pulse returns while the outbound pulse is still being transmitted, such as when the reflecting discontinuity is very close to the TDR apparatus.

McEwan, Thomas E. (Livermore, CA)

1996-01-01T23:59:59.000Z

406

Ultra-wideband directional sampler  

DOE Patents [OSTI]

The Ultra-Wideband (UWB) Directional Sampler is a four port device that combines the function of a directional coupler with a high speed sampler. Two of the four ports operate at a high sub-nanosecond speed, in ``real time``, and the other two ports operate at a slow millisecond-speed, in ``equivalent time``. A signal flowing inbound to either of the high speed ports is sampled and coupled, in equivalent time, to the adjacent equivalent time port while being isolated from the opposite equivalent time port. A primary application is for a time domain reflectometry (TDR) situation where the reflected pulse returns while the outbound pulse is still being transmitted, such as when the reflecting discontinuity is very close to the TDR apparatus. 3 figs.

McEwan, T.E.

1996-05-14T23:59:59.000Z

407

On the Time Times Temperature Bound  

E-Print Network [OSTI]

Recently Hod proposes a lower bound on the relaxation time of a perturbed thermodynamic system. For gravitational systems this bound transforms into a condition on the fundamental quasinormal frequency. We test the bound in some spacetimes whose quasinormal frequencies are calculated exactly, as the three-dimensional BTZ black hole, the D-dimensional de Sitter spacetime, and the D-dimensional Nariai spacetime. We find that for some of these spacetimes their fundamental quasinormal frequencies do not satisfy the bound proposed by Hod.

A. Lopez-Ortega

2010-06-28T23:59:59.000Z

408

Final:Realizing Domain-Specific Compiler Optimizations via Generic Programming  

E-Print Network [OSTI]

-level" operations of built-in types; there are no mechanisms for defining domain-specific optimization rules languages (9) and the BroadWay compiler (6), allow more powerful domain-specific optimizations by devising and their operations, and, second, to annotate the programs to indicate where the transformations should apply

Paris-Sud XI, Université de

409

nature materials | ADVANCE ONLINE PUBLICATION | www.nature.com/naturematerials 1 Domain-wall superconductivity in  

E-Print Network [OSTI]

can be used in the S/F hybrids: individual magnetic dots12,13 or arrays of these14 , and non-patterned ferromagnetic thin films with bubble domains15 . Depending on the domain structure of the ferromagnet, theory3

Moshchalkov, Victor V.

410

Micro-and nanoscale domain engineering in lithium niobate and lithium tantalate  

E-Print Network [OSTI]

Micro- and nanoscale domain engineering in lithium niobate and lithium tantalate Vladimir Ya. Shur investigation of the domain evolution in lithium niobate and lithium tantalate during backswitched electric sources based on quasi-phase matching.11 Lithium niobate LiNbO3 (LN) and lithium tantalate LiTaO3 (LT

Byer, Robert L.

411

Molecular Dynamics Simulation of the SH3 Domain Aggregation Suggests a Generic  

E-Print Network [OSTI]

the elongation of amyloid fibrils.12 ­ 15 However, the domain swapping hypothesis is based on the aggregation and the open aggregation state. The closed dimer is formed by "domain swapping"-- the two proteins exchange human disease were found to be able to form amyloid fibril struc- tures in vitro under denaturing

Stanley, H. Eugene

412

Role of Pam16's degenerate J domain in protein import across the mitochondrial inner membrane  

E-Print Network [OSTI]

Patrick R. D'Silva*, Brenda Schilke*, William Walter, and Elizabeth A. Craig Department of Biochemistry domain to stim- ulate Ssc1's ATPase domain, and (iii) the innately lower stimulatory activity of the Pam-terminal regions. In addition, the C-terminal region of Pam16 has significant sequence similarity to Pam18's C

Craig, Elizabeth A

413

ADAPTIVE POSTFILTERING FOR ENHANCEMENT OF NOISY SPEECH IN THE FREQUENCY DOMAIN  

E-Print Network [OSTI]

ADAPTIVE POSTFILTERING FOR ENHANCEMENT OF NOISY SPEECH IN THE FREQUENCY DOMAIN Peter Kabal ' j 2 for enhancement of noisy speech. The postfilter suppresses the noise in spectral valleys and allows more noise that this new frequency-domain approach results in enhanced speech of better perceptual quality than obtained

Kabal, Peter

414

SPECTRAL THEORY OF ELLIPTIC OPERATORS IN EXTERIOR DOMAINS FRITZ GESZTESY AND MARK M. MALAMUD  

E-Print Network [OSTI]

) domains# in R n with compact boundary # # Using the concept of boundary triples and operator­valued Weyl. Introduction Let# be an open domain in R n (bounded or unbounded) with compact boundary # Throughout we assume., A # ), that is, the closure of A defined on C # 0(##3 The maximal operators Amax and A # max are then defined

415

Analysis of Property-Preservation Capabilities of the ROX and ESh Hash Domain Extenders  

E-Print Network [OSTI]

Analysis of Property-Preservation Capabilities of the ROX and ESh Hash Domain Extenders Mohammad domain extension trans- forms are the Ramdom-Oracle-XOR (ROX) transform and the Enveloped Shoup (ESh showed that ESh is capable of preserving five important security notions; namely CR, message

416

Layered Frequency-Domain Turbo Equalization for Single Carrier Broadband MIMO Systems  

E-Print Network [OSTI]

Layered Frequency-Domain Turbo Equalization for Single Carrier Broadband MIMO Systems Jian Zhang 72701, USA Abstract-- A new layered frequency-domain turbo equalization (LFDTE) scheme is proposed the respective advantages of layered detection and turbo equalization to further lower the bit error rate (BER

Zheng, Yahong Rosa

417

PIR: A Domain Specific Language for Multimedia Retrieval Xiaobing Huang and Tian Zhao  

E-Print Network [OSTI]

PIR: A Domain Specific Language for Multimedia Retrieval Xiaobing Huang and Tian Zhao Department for efficiency and cannot be easily adapted for parallelization. In this paper, we present PIR (Pipeline To address these problems, we introduce a domain specific language: PIR 1 for developing MIR applications

Zhao, Tian

418

On the growth mode of two-lobed curvilinear graphene domains at  

E-Print Network [OSTI]

such as transparent electrodes1 , supercapacitors2 , high-speed electronics3 , plasmonics4,5 , photovoltaics6 such as system thermodynamics and growth kinetics including surface diffusion16 , active species adsorption in the typical polycrystalline Cu plays a greater role in domain growth kinetics and thus domain shape, size

Yang, Eui-Hyeok

419

MFPS XX1 Preliminary Version Parametric Domain-theoretic Models of  

E-Print Network [OSTI]

collection of types, including solutions to recursive domain equations. We further define a notion, and conclude that such models have solutions for a wide class of recursive domain equations. Finally, we supported by the Danish Technical Research Council under grant no.: 56­00­0309. 2 Email: birkedal

Birkedal, Lars

420

THE BEST SOBOLEV TRACE CONSTANT IN DOMAINS WITH HOLES FOR CRITICAL OR SUBCRITICAL EXPONENTS  

E-Print Network [OSTI]

THE BEST SOBOLEV TRACE CONSTANT IN DOMAINS WITH HOLES FOR CRITICAL OR SUBCRITICAL EXPONENTS JULI in the Sobolev trace embedding H1() Lq() in a bounded smooth domain for critical or subcritical q, that is 1 embedding H1 () Lq () for critical or subcritical exponents, 1

Rossi, Julio D.

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

RESEARCH ARTICLE Open Access A genome-wide study of PDZ-domain interactions  

E-Print Network [OSTI]

and small- and large-scale screens to refine the exact sequence of this presumed C-terminal motif [5 with extensive validation by co-affinity purification, we defined a domain-orientated interactome map the Uniprot entry for MPDZ [13]). PDZ domain proteins have also been used in the context of large-scale

Boyer, Edmond

422

Supplementary Figure legends Supplementary Figure 1: Long term follow up of changing hair cycle domains on  

E-Print Network [OSTI]

Supplementary Figure legends Supplementary Figure 1: Long term follow up of changing hair cycle to trace the temporal changes of hair cycle domains. Pictures were taken every 2-3 days and selective ones are shown here. In normal pigmented mice, similar hair cycle domains can be revealed by simple hair clipping

Maini, Philip K.

423

Time functions as utilities  

E-Print Network [OSTI]

Every time function on spacetime gives a (continuous) total preordering of the spacetime events which respects the notion of causal precedence. The problem of the existence of a (semi-)time function on spacetime and the problem of recovering the causal structure starting from the set of time functions are studied. It is pointed out that these problems have an analog in the field of microeconomics known as utility theory. In a chronological spacetime the semi-time functions correspond to the utilities for the chronological relation, while in a K-causal (stably causal) spacetime the time functions correspond to the utilities for the K^+ relation (Seifert's relation). By exploiting this analogy, we are able to import some mathematical results, most notably Peleg's and Levin's theorems, to the spacetime framework. As a consequence, we prove that a K-causal (i.e. stably causal) spacetime admits a time function and that the time or temporal functions can be used to recover the K^+ (or Seifert) relation which indeed turns out to be the intersection of the time or temporal orderings. This result tells us in which circumstances it is possible to recover the chronological or causal relation starting from the set of time or temporal functions allowed by the spacetime. Moreover, it is proved that a chronological spacetime in which the closure of the causal relation is transitive (for instance a reflective spacetime) admits a semi-time function. Along the way a new proof avoiding smoothing techniques is given that the existence of a time function implies stable causality, and a new short proof of the equivalence between K-causality and stable causality is given which takes advantage of Levin's theorem and smoothing techniques.

E. Minguzzi

2009-09-04T23:59:59.000Z

424

A Domain Specific Ontology Based Semantic Web Search Engine  

E-Print Network [OSTI]

Since its emergence in the 1990s the World Wide Web (WWW) has rapidly evolved into a huge mine of global information and it is growing in size everyday. The presence of huge amount of resources on the Web thus poses a serious problem of accurate search. This is mainly because today's Web is a human-readable Web where information cannot be easily processed by machine. Highly sophisticated, efficient keyword based search engines that have evolved today have not been able to bridge this gap. So comes up the concept of the Semantic Web which is envisioned by Tim Berners-Lee as the Web of machine interpretable information to make a machine processable form for expressing information. Based on the semantic Web technologies we present in this paper the design methodology and development of a semantic Web search engine which provides exact search results for a domain specific search. This search engine is developed for an agricultural Website which hosts agricultural information about the state of West Bengal.

Mukhopadhyay, Debajyoti; Mukherjee, Sreemoyee; Bhattacharya, Jhilik; Kim, Young-Chon

2011-01-01T23:59:59.000Z

425

Spin-polarized transport through domain wall in magnetized graphene  

E-Print Network [OSTI]

Atomically thin two-dimensional layer of honeycomb crystalline carbon known as graphene is a promising system for electronics. It has a point-like Fermi surface, which is very sensitive to external potentials. In particular, Zeeman magnetic field parallel to the graphene layer splits electron bands and creates fully spin-polarized and geometrically congruent circular Fermi surfaces of particle and hole type. In the presence of electric field, particles and holes with opposite spins drift in opposite direction. These phenomena are likely to be of interest for developing graphene-based spintronic devices. A domain wall (DW) separating regions with opposite spin polarizations is a basic element of such a device. Here we consider a ballistic passage of spin-polarized charge carriers through DW in graphene. We also discuss the analogy between the generation of spin currents in graphene and in relativistic quark-gluon plasma, where the spin-polarized current is responsible for the phenomenon of charge separation studied recently at RHIC.

M. Khodas; I. A. Zaliznyak; D. E. Kharzeev

2009-04-08T23:59:59.000Z

426

Non-equilibrium raft-like membrane domains under continuous recycling  

E-Print Network [OSTI]

We present a model for the kinetics of spontaneous membrane domain (raft) assembly that includes the effect of membrane recycling ubiquitous in living cells. We show that the domains have a broad power-law distribution with an average radius that scales with the 1/4 power of the domain lifetime when the line tension at the domain edges is large. For biologically reasonable recycling and diffusion rates the average domain radius is in the tens of nm range, consistent with observations. This represents one possible link between signaling (involving rafts) and traffic (recycling) in cells. Finally, we present evidence that suggests that the average raft size may be the same for all scale-free recycling schemes.

Matthew S. Turner; Pierre Sens; Nicholas D. Socci

2005-03-30T23:59:59.000Z

427

Fast SOLA-based Time Scale Modification using Envelope Matching Peter H. W. Wong, Oscar C. Au  

E-Print Network [OSTI]

2 Fast SOLA-based Time Scale Modification using Envelope Matching Peter H. W. Wong, Oscar C. Au such as MPEG-4 and fast/slow browsing of pre-recorded materials. Synchronized Overlap-and-Add (SOLA) is a time-domain TSM algorithm known to achieve good speech and audio quality. One problem of SOLA is that it requires

Wong, Peter Hon-Wah

428

Is Time Inhomogeneous ?  

E-Print Network [OSTI]

In this article, we discuss probability of inhomogeneous time in high or low energy scale of physics. Consequently, the possibility was investigated of using theories such as varying speed of light (VSL) and fractal mathematics to build a framework within which answers can be found to some of standard cosmological problems and physics theories on the basis of time non-homogeneity.

S. Davood Sadatian

2014-05-08T23:59:59.000Z

429

Probabilistic time-series  

E-Print Network [OSTI]

SCIA 2003 Tutorial: Hidden Markov Models Sam Roweis, University of Toronto June 29, 2003 Probabilistic Generative Models for Time Series #15; Stochastic models for time-series: y 1 ; y 2 ; : : : ; y #15; Add noise to make the system stochastic: p(y t jy t 1 ;y t 2 ; : : : ;y t k ) #15; Markov models

Roweis, Sam

430

TIMELY WARNING CAMPUS ALERT  

E-Print Network [OSTI]

TIMELY WARNING CAMPUS ALERT 13 September 2007 This communication is prepared as part of the Timely of 1990. This federal law requires a general communication to the campus community of all crimes reported. Consider carefully whether your presence at or near the Lancaster Green Apartments while unaccompanied

Hardy, Christopher R.

431

In-medium effects for nuclear matter in the Fermi energy domain  

E-Print Network [OSTI]

We study nuclear stopping in central collisions for heavy-ion induced reactions in the Fermi energy domain, between $15$ and $100$ A\\,\\textrm{MeV}. Using the large dataset of exclusive measurements provided by the $4\\pi$ array \\emph{INDRA}, we determine the relative degree of stopping as a function of system mass and bombarding energy. We show that the stopping can be directly related to the transport properties in the nuclear medium. By looking specifically at free nucleons (here protons), we present for the first time a comprehensive body of experimental results concerning the mean free path, the nucleon-nucleon cross-section and in-medium effects in nuclear matter. It is shown that the mean free path exhibits a maximum at $\\lambda_{NN}=9.5 \\pm 2$ \\textrm{fm}, around $E_{inc}=35-40$ A\\,\\textrm{MeV} incident energy and decreases toward an asymptotic value $\\lambda_{NN}= 4.5 \\pm 1$ \\textrm{fm} at $E_{inc} = 100$ A\\,\\textrm{MeV}. After accounting for Pauli blocking of elastic nucleon-nucleon collisions, it is ...

Lopez, O; Lehaut, G; Borderie, B; Rivet, M F; Bougault, R; Galichet, E; Guinet, D; Neindre, N Le; Marini, P; Napolitani, P; Pârlog, M; Rosato, E; Spadaccini, G; Vient, E; Vigilante, M

2014-01-01T23:59:59.000Z

432

Nucleon structure with dynamical (2+1)-flavor domain wall fermions lattice QCD  

E-Print Network [OSTI]

We report isovector form factors and low moments of isovector structure functions of nucleon from the coarse RIKEN-BNL-Columbia (RBC) and UKQCD joint dynamical (2+1)-flavor domain-wall fermions (DWF) ensembles. The lattice cut off is estimated at (a^{-1}=1.7) GeV. The lattice volume is as large as 2.7 fm across. We carefully optimize the nucleon source/sink separation in time to about 1.4 fm. Unexpectedly large finite-size effect in the axial charge is found. The effect scales with a single variable, the product (m_\\pi L) of the pion mass (m_\\pi) and lattice spatial linear extent (L), and sets in at around (m_\\pi L = 5). We also discuss momentum-transfer dependence of the vector, induced tensor, axial-vector and induced pesudo-scalar form factors. From structure functions, fully non-perturbatively renormalized iso-vector quark momentum fraction, (_{u-d}), helicity fraction, (_{\\Delta u - \\Delta d}), and transversity, (_{\\delta u - \\delta d}), are reported, as well as an unrenormalized twist-3 coefficient, (d_1). The ratio of the momentum to helicity fractions, (_{u-d}/_{\\Delta u - \\Delta d}), does not depend on light quark mass and agree well with the experiment. Their respective absolute values, fully renormalized, shows interesting trending toward the respective experimental values at the lightest light quark mass.

Shigemi Ohta; Takeshi Yamazaki

2008-09-30T23:59:59.000Z

433

Recognising Visual Patterns to Communicate Gas Turbine Time-Series Data  

E-Print Network [OSTI]

Recognising Visual Patterns to Communicate Gas Turbine Time-Series Data Jin Yu, Jim Hunter, Ehud analogue channels are sampled once per second and archived by the Tiger system for monitoring gas turbines that it is very important to identify such patterns in any attempt at summarisation. In the gas turbine domain

Reiter, Ehud

434

BLIND SOURCE SEPARATION BASED ON SPACE-TIME-FREQUENCY DIVERSITY Scott Rickard, Radu Balan, Justinian Rosca  

E-Print Network [OSTI]

, Justinian Rosca Siemens Corporate Research, 755 College Road East, Princeton, NJ 08540 scott.rickard,radu.balan,justinian.rosca¡ @scr.siemens.com ABSTRACT We investigate the assumption that sources have disjoint support in the time call signals for which there exists an invertible linear transform such that in the transform domain

Maryland at College Park, University of

435

Photothermoacoustic imaging of biological tissues: maximum depth characterization comparison of time and  

E-Print Network [OSTI]

Photothermoacoustic imaging of biological tissues: maximum depth characterization comparison for Advanced Diffusion-Wave Technologies Department of Mechanical and Industrial Engineering 5 King's College induced in light-absorbing materials can be observed either as a transient signal in time domain

Mandelis, Andreas

436

Environment Induced Time Arrow  

E-Print Network [OSTI]

The spread of the time arrows from the environment to an observed subsystem is followed within a harmonic model. A similarity is pointed out between irreversibility and a phase with spontaneously broken symmetry. The causal structure of interaction might be lost in the irreversible case, as well. The Closed Time Path formalism is developed for classical systems and shown to handle the time arrow problem in a clear and flexible manner. The quantum case is considered, as well, and the common origin of irreversibility and decoherence is pointed out.

Janos Polonyi

2012-06-25T23:59:59.000Z

437

Iterative image-domain decomposition for dual-energy CT  

SciTech Connect (OSTI)

Purpose: Dual energy CT (DECT) imaging plays an important role in advanced imaging applications due to its capability of material decomposition. Direct decomposition via matrix inversion suffers from significant degradation of image signal-to-noise ratios, which reduces clinical values of DECT. Existing denoising algorithms achieve suboptimal performance since they suppress image noise either before or after the decomposition and do not fully explore the noise statistical properties of the decomposition process. In this work, the authors propose an iterative image-domain decomposition method for noise suppression in DECT, using the full variance-covariance matrix of the decomposed images. Methods: The proposed algorithm is formulated in the form of least-square estimation with smoothness regularization. Based on the design principles of a best linear unbiased estimator, the authors include the inverse of the estimated variance-covariance matrix of the decomposed images as the penalty weight in the least-square term. The regularization term enforces the image smoothness by calculating the square sum of neighboring pixel value differences. To retain the boundary sharpness of the decomposed images, the authors detect the edges in the CT images before decomposition. These edge pixels have small weights in the calculation of the regularization term. Distinct from the existing denoising algorithms applied on the images before or after decomposition, the method has an iterative process for noise suppression, with decomposition performed in each iteration. The authors implement the proposed algorithm using a standard conjugate gradient algorithm. The method performance is evaluated using an evaluation phantom (Catphan©600) and an anthropomorphic head phantom. The results are compared with those generated using direct matrix inversion with no noise suppression, a denoising method applied on the decomposed images, and an existing algorithm with similar formulation as the proposed method but with an edge-preserving regularization term. Results: On the Catphan phantom, the method maintains the same spatial resolution on the decomposed images as that of the CT images before decomposition (8 pairs/cm) while significantly reducing their noise standard deviation. Compared to that obtained by the direct matrix inversion, the noise standard deviation in the images decomposed by the proposed algorithm is reduced by over 98%. Without considering the noise correlation properties in the formulation, the denoising scheme degrades the spatial resolution to 6 pairs/cm for the same level of noise suppression. Compared to the edge-preserving algorithm, the method achieves better low-contrast detectability. A quantitative study is performed on the contrast-rod slice of Catphan phantom. The proposed method achieves lower electron density measurement error as compared to that by the direct matrix inversion, and significantly reduces the error variation by over 97%. On the head phantom, the method reduces the noise standard deviation of decomposed images by over 97% without blurring the sinus structures. Conclusions: The authors propose an iterative image-domain decomposition method for DECT. The method combines noise suppression and material decomposition into an iterative process and achieves both goals simultaneously. By exploring the full variance-covariance properties of the decomposed images and utilizing the edge predetection, the proposed algorithm shows superior performance on noise suppression with high image spatial resolution and low-contrast detectability.

Niu, Tianye; Dong, Xue; Petrongolo, Michael; Zhu, Lei, E-mail: leizhu@gatech.edu [Nuclear and Radiological Engineering and Medical Physics Programs, The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)] [Nuclear and Radiological Engineering and Medical Physics Programs, The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)

2014-04-15T23:59:59.000Z

438

Domain Wall QCD with Near-Physical Pions  

E-Print Network [OSTI]

We present physical results for a variety of light hadronic quantities obtained via a combined analysis of three 2+1 flavour domain wall fermion ensemble sets. For two of our ensemble sets we used the Iwasaki gauge action with beta=2.13 (a^-1=1.75(4) GeV) and beta=2.25 (a^-1=2.31(4) GeV) and lattice sizes of 24^3 x 64 and 32^3 x 64 respectively, with unitary pion masses in the range 293(5)-417(10) MeV. The extent L_s for the 5^th dimension of the domain wall fermion formulation is L_s=16 in these ensembles. In this analysis we include a third ensemble set that makes use of the novel Iwasaki+DSDR (Dislocation Suppressing Determinant Ratio) gauge action at beta = 1.75 (a^-1=1.37(1) GeV) with a lattice size of 32^3 x 64 and L_s=32 to reach down to partially-quenched pion masses as low as 143(1) MeV and a unitary pion mass of 171(1) MeV, while retaining good chiral symmetry and topological tunneling. We demonstrate a significant improvement in our control over the chiral extrapolation, resulting in much improved continuum predictions for the above quantities. The main results of this analysis include the pion and kaon decay constants, f_\\pi=127(3)_{stat}(3)_{sys} MeV and f_K = 152(3)_{stat}(2)_{sys} MeV respectively (f_K/f_\\pi = 1.199(12)_{stat}(14)_{sys}); the average up/down quark mass and the strange-quark mass in the MSbar-scheme at 3 GeV, m_{ud}(MSbar, 3 GeV) = 3.05(8)_{stat}(6)_{sys} MeV and m_s(MSbar, 3 GeV) = 83.5(1.7)_{stat}(1.1)_{sys}; the neutral kaon mixing parameter in the MSbar-scheme at 3 GeV, B_K(MSbar,3 GeV) = 0.535(8)_{stat}(13)_{sys}, and in the RGI scheme, \\hat B_K = 0.758(11)_{stat}(19)_{sys}; and the Sommer scales r_1 = 0.323(8)_{stat}(4)_{sys} fm and r_0 = 0.480(10)_{stat}(4)_{sys} (r_1/r_0 = 0.673(11)_{stat}(3)_{sys}). We also obtain values for the SU(2) ChPT effective couplings, \\bar{l_3} = 2.91(23)_{stat}(7)_{sys}$ and \\bar{l_4} = 3.99(16)_{stat}(9)_{sys}.

RBC Collaboration; UKQCD Collaboration; R. Arthur; T. Blum; P. A. Boyle; N. H. Christ; N. Garron; R. J. Hudspith; T. Izubuchi; C. Jung; C. Kelly; A. T. Lytle; R. D. Mawhinney; D. Murphy; S. Ohta; C. T. Sachrajda; A. Soni; J. Yu; J. M. Zanotti

2014-04-18T23:59:59.000Z

439

Theory of filtered type-II PDC in the continuous-variable domain: Quantifying the impacts of filtering  

E-Print Network [OSTI]

Parametric down-conversion (PDC) forms one of the basic building blocks for quantum optical experiments. However, the intrinsic multimode spectral-temporal structure of pulsed PDC often poses a severe hindrance for the direct implementation of the heralding of pure single-photon states or, for example, continuous-variable entanglement distillation experiments. To get rid of multimode effects narrowband frequency filtering is frequently applied to achieve a single-mode behavior. A rigorous theoretical description to accurately describe the effects of filtering on PDC, however, is still missing. To date, the theoretical models of filtered PDC are rooted in the discrete-variable domain and only account for filtering in the low gain regime, where only a few photon pairs are emitted at any single point in time. In this paper we extend these theoretical descriptions and put forward a simple model, which is able to accurately describe the effects of filtering on PDC in the continuous-variable domain. This developed straightforward theoretical framework enables us to accurately quantify the trade-off between suppression of higher-order modes, reduced purity and lowered Einstein-Podolsky-Rosen (EPR) entanglement, when narrowband filters are applied to multimode type-II PDC.

Andreas Christ; Cosmo Lupo; Matthias Reichelt; Torsten Meier; Christine Silberhorn

2014-08-16T23:59:59.000Z

440

Time, energy & form  

E-Print Network [OSTI]

Physical manifestations of time occur in natural forms of all sizes. Architectural form serves as shelter while providing a built envelope of human life, simultaneously influencing and influenced by energetic activities ...

McInnis, Martha Jane

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Drug Retention Times  

SciTech Connect (OSTI)

The purpose of this monograph is to provide information on drug retention times in the human body. The information provided is based on plausible illegal drug use activities that might be engaged in by a recreational drug user

Center for Human Reliability Studies

2007-05-01T23:59:59.000Z

442

Drug Retention Times  

SciTech Connect (OSTI)

The purpose of this monograph is to provide information on drug retention times in the human body. The information provided is based on plausible illegal drug use activities that might be engaged in by a recreational drug user.

Center for Human Reliability Studies

2007-05-01T23:59:59.000Z

443

TBC-Domain GAPs for Rab GTPases Accelerate GTP Hydrolysis by a Dual-Finger Mechanism  

SciTech Connect (OSTI)

Rab GTPases regulate membrane trafficking by cycling between inactive (GDP-bound) and active (GTP-bound) conformations. The duration of the active state is limited by GTPase-activating proteins (GAPs), which accelerate the slow intrinsic rate of GTP hydrolysis. Proteins containing TBC (Tre-2, Bub2 and Cdc16) domains are broadly conserved in eukaryotic organisms and function as GAPs for Rab GTPases as well as GTPases that control cytokinesis. An exposed arginine residue is a critical determinant of GAP activity in vitro and in vivo. It has been expected that the catalytic mechanism of TBC domains would parallel that of Ras and Rho family GAPs. Here we report crystallographic, mutational and functional analyses of complexes between Rab GTPases and the TBC domain of Gyp1p. In the crystal structure of a TBC-domain-Rab-GTPase-aluminium fluoride complex, which approximates the transition-state intermediate for GTP hydrolysis, the TBC domain supplies two catalytic residues in trans, an arginine finger analogous to Ras/Rho family GAPs and a glutamine finger that substitutes for the glutamine in the DxxGQ motif of the GTPase. The glutamine from the Rab GTPase does not stabilize the transition state as expected but instead interacts with the TBC domain. Strong conservation of both catalytic fingers indicates that most TBC-domain GAPs may accelerate GTP hydrolysis by a similar dual-finger mechanism.

Pan,X.; Eathiraj, S.; Lambright, D.

2006-01-01T23:59:59.000Z

444

Design of a finite impulse response filter for the purpose of directional edge detection via spatial domain convolution  

E-Print Network [OSTI]

The purpose of this research was to design a spatial domain convolution filter capable of directional edge detection which has a specific relationship to a pre-defined filter in the frequency domain. Nobody has designed a directional filter...

Yeary, Mark Bradley

2012-06-07T23:59:59.000Z

445

Evaluation of magnetic flux distribution from magnetic domains in [Co/Pd] nanowires by magnetic domain scope method using contact-scanning of tunneling magnetoresistive sensor  

SciTech Connect (OSTI)

Current-driven magnetic domain wall motions in magnetic nanowires have attracted great interests for physical studies and engineering applications. The magnetic force microscope (MFM) is widely used for indirect verification of domain locations in nanowires, where relative magnetic force between the local domains and the MFM probe is used for detection. However, there is an occasional problem that the magnetic moments of MFM probe influenced and/or rotated the magnetic states in the low-moment nanowires. To solve this issue, the “magnetic domain scope for wide area with nano-order resolution (nano-MDS)” method has been proposed recently that could detect the magnetic flux distribution from the specimen directly by scanning of tunneling magnetoresistive field sensor. In this study, magnetic domain structure in nanowires was investigated by both MFM and nano-MDS, and the leakage magnetic flux density from the nanowires was measured quantitatively by nano-MDS. Specimen nanowires consisted from [Co (0.3)/Pd (1.2)]{sub 21}/Ru(3) films (units in nm) with perpendicular magnetic anisotropy were fabricated onto Si substrates by dual ion beam sputtering and e-beam lithography. The length and the width of the fabricated nanowires are 20??m and 150?nm. We have succeeded to obtain not only the remanent domain images with the detection of up and down magnetizations as similar as those by MFM but also magnetic flux density distribution from nanowires directly by nano-MDS. The obtained value of maximum leakage magnetic flux by nano-MDS is in good agreement with that of coercivity by magneto-optical Kerr effect microscopy. By changing the protective diamond-like-carbon film thickness on tunneling magnetoresistive sensor, the three-dimensional spatial distribution of leakage magnetic flux could be evaluated.

Okuda, Mitsunobu, E-mail: okuda.m-ky@nhk.or.jp; Miyamoto, Yasuyoshi; Miyashita, Eiichi; Hayashi, Naoto [NHK Science and Technology Research Laboratories, 1-10-11 Kinuta Setagaya, Tokyo 157-8510 (Japan)

2014-05-07T23:59:59.000Z

446

LOCALIZATION OF AURORA A AND AURORA B KINASES DURING INTERPHASE: ROLE OF THE N-TERMINAL DOMAIN.  

E-Print Network [OSTI]

1 LOCALIZATION OF AURORA A AND AURORA B KINASES DURING INTERPHASE: ROLE OF THE N-TERMINAL DOMAIN localization of Aurora kinases A and B § - these authors contributed equally to the work Address correspondence Aurora kinases possess a conserved catalytic domain (CD) and a N-terminal domain (ND) that varies in size

Paris-Sud XI, Université de

447

Scaling relationship on macroscopic helical domains in NiTi tubes Y.J. He, Q.P. Sun *  

E-Print Network [OSTI]

that determines the size and shape of the helical domain and what is the effect of dry- friction type stress: Macroscopic helical domains Martensitic phase transformation NiTi shape memory alloy tube Energy minimization- ized in a helix-shaped macro-domain consisting of almost fully transformed grains whose statistical

Sun, Qing-Ping

448

Decoherence and time emergence  

E-Print Network [OSTI]

In this work the possible role that Decoherence Model could play in the emergence of the classical concept of time is analyzed. We take the case of a Mixmaster universe with small anisotropy and construct its Halliwell propagator. Afterwards we introduce in our system terms that comprise the effects of Decoherence Model. This is done by means of the so called Restricted Path Integral Formalism. We obtain Halliwell's modified propagator and find that a gauge invariant physical time emerges as consequence of this process.

A. Camacho

1998-07-30T23:59:59.000Z

449

Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy  

E-Print Network [OSTI]

The effect of perpendicular magnetic anisotropy (PMA) on current-induced domain wall (DW) motion is investigated by micromagnetic simulations. The critical current density J[subscript C] to drive DWs into periodic ...

Emori, Satoru

450

CGH Data Modeling and Smoothing in Stationary Wavelet Packet Transform Domain.  

E-Print Network [OSTI]

CGH Data Modeling and Smoothing in Stationary Wavelet Packet Transform Domain. Heng Huang1 , Nha, Texas, USA Email: Heng Huang- heng@uta.edu; Nha Nguyen - nhn3175@exchange.uta.edu; Soontorn Oraintara

Huang, Heng

451

PEVK Domain of Titin: An Entropic Spring with Actin-Binding Properties  

E-Print Network [OSTI]

as an entropic spring with the properties of a random coil exhibiting mechanical conforma- tions of differentPEVK Domain of Titin: An Entropic Spring with Actin-Binding Properties Wolfgang A. Linke,*,1

Fernandez, Julio M.

452

The Cognitive Domain of a Glider in the Game of Life Randall D. Beer  

E-Print Network [OSTI]

1 The Cognitive Domain of a Glider in the Game of Life Randall D. Beer Cognitive Science Program address all correspondence to: Randall D. Beer Phone: (812) 856-0873 Cognitive Science Program Fax: (812

Beer, Randall D.

453

Oligomerization-dependent Regulation of Motility and Morphogenesis by the Collagen XVIII NC1/Endostatin Domain  

E-Print Network [OSTI]

Collagen XVIII (c18) is a triple helical endothelial/epithelial basement membrane protein whose noncollagenous (NC)1 region trimerizes a COOH-terminal endostatin (ES) domain conserved in vertebrates, Caenorhabditis elegans and Drosophila. Here...

Kuo, Calvin J.; LaMontagne, Kenneth R.; Garcia-Cardeñ a, Guillermo; Ackley, Brian D.; Kalman, Daniel; Park, Susan; Christofferson, Rolf; Kamihara, Junne; Ding, Yuan-Hua; Lo, Kin-Ming; Gillies, Stephen; Folkman, Judah; Mulligan, Richard C.; Javaherian, Kashi

2001-03-19T23:59:59.000Z

454

Development of a radiative transport based, fluorescence-enhanced, frequency-domain small animal imaging system  

E-Print Network [OSTI]

% intralipid solutions. Through collaboration with Transpire, Inc., a fluorescence-enhanced, frequency-domain, radiative transport equation (RTE) solver was developed. This solver incorporates the discrete ordinates, source iteration with diffusion synthetic...

Rasmussen, John C.

2009-05-15T23:59:59.000Z

455

E-Print Network 3.0 - atpase domain mutation Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

-terminal beta-barrel domain of the alpha and beta subunits in the yeast F1-ATPase. J Bioenerg Biomembr 1999... -complex in Leishmania tarentolae is an uniquely-structured...

456

Towards multi-domain speech understanding with flexible and dynamic vocabulary  

E-Print Network [OSTI]

In developing telephone-based conversational systems, we foresee future systems capable of supporting multiple domains and flexible vocabulary. Users can pursue several topics of interest within a single telephone call, ...

Chung, Grace Yuet-Chee

2001-01-01T23:59:59.000Z

457

TEA - a linear frequency domain finite element model for tidal embayment analysis  

E-Print Network [OSTI]

A frequency domain (harmonic) finite element model is developed for the numerical prediction of depth average circulation within small embayments. Such embayments are often characterized by irregular boundaries and bottom ...

Westerink, Joannes J.

1984-01-01T23:59:59.000Z

458

E-Print Network 3.0 - applicability domain problem Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

QoS Provisioning Over Heterogeneous Network Domains applicable patent or other IPR claims of which he or she is aware have been or will be ... Source: Monteiro, Edmundo -...

459

The Key Event in Force-Induced Unfolding of Titin's Immunoglobulin Domains  

E-Print Network [OSTI]

of Illinois at Urbana-Champaign, Urbana, Illinois 61801 USA ABSTRACT Steered molecular dynamics simulation energy barrier at an extension of 14 Ă? on the unfolding pathway that protects the domain against

Lu, Hui

460

A parallel adaptive finite element simplified spherical harmonics approximation solver for frequency domain fluorescence molecular imaging  

E-Print Network [OSTI]

fluorescence molecular imaging Yujie Lu1 , Banghe Zhu1 , Haiou Shen2 , John C Rasmussen1 , Ge Wang2 and Eva M of the domain at excitation and emission wavelengths xf a absorption coefficient of the fluorophore cb light

Virginia Tech

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Compact parametric models for efficient sequential decision making in high-dimensional, uncertain domains  

E-Print Network [OSTI]

Within artificial intelligence and robotics there is considerable interest in how a single agent can autonomously make sequential decisions in large, high-dimensional, uncertain domains. This thesis presents decision-making ...

Brunskill, Emma Patricia

2009-01-01T23:59:59.000Z

462

Lipid-Protein Interactions Alter Line Tensions and Domain Size Distributions in Lung Surfactant Monolayers  

E-Print Network [OSTI]

The size distribution of domains in phase-separated lung surfactant monolayers influences monolayer viscoelasticity and compressibility which, in turn, influence monolayer collapse and set the compression at which the ...

Dhar, Prajnaparamita

463

E-Print Network 3.0 - appa bluf domain Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The lifetimes are 6 ps with 31... by the presence of confor- mational substates in the dark, as shown for the AppA BLUF domain by NMR spectroscopy... ) electron transfer rates...

464

E-Print Network 3.0 - antiphase domain boundaries Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Ecology 5 Long period structures in Ti1+xAl3-x alloys : experimental evidence of a devil's staircase ? Summary: of the domains (limited by the antiphase boundaries)...

465

Time Step Size Limitation Introduced by the BSSN Gamma Driver  

E-Print Network [OSTI]

Many mesh refinement simulations currently performed in numerical relativity counteract instabilities near the outer boundary of the simulation domain either by changes to the mesh refinement scheme or by changes to the gauge condition. We point out that the BSSN Gamma Driver gauge condition introduces a time step size limitation in a similar manner as a CFL condition, but which is independent of the spatial resolution. We give a didactic explanation of this issue, show why especially mesh refinement simulations suffer from it, and point to a simple remedy.

Erik Schnetter

2010-06-17T23:59:59.000Z

466

Time reversal communication system  

DOE Patents [OSTI]

A system of transmitting a signal through a channel medium comprises digitizing the signal, time-reversing the digitized signal, and transmitting the signal through the channel medium. The channel medium may be air, earth, water, tissue, metal, and/or non-metal.

Candy, James V. (Danville, CA); Meyer, Alan W. (Danville, CA)

2008-12-02T23:59:59.000Z

467

Time and Attendance Reporting  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

DOE O 535.1 establishes the Department's requirements and responsibilities governing time and attendance reporting. The purpose of this revision is to reflect the transition of payroll processing from the Capital Accounting Center to the Defense Finance and Accounting System. Cancels DOE O 3600.1B. Canceled by DOE O 322.1C.

2004-10-22T23:59:59.000Z

468

Fuzzy Space-Time  

E-Print Network [OSTI]

A review is made of recent efforts to define linear connections and their corresponding curvature within the context of noncommutative geometry. As an application it is suggested that it is possible to identify the gravitational field as a phenomenological manifestation of space-time commutation relations and to thereby clarify its role as an ultraviolet regularizer.

J. Madore

1996-07-26T23:59:59.000Z

469

Time-Encoded Imagers.  

SciTech Connect (OSTI)

This report provides a short overview of the DNN R&D funded project, Time-Encoded Imagers. The project began in FY11 and concluded in FY14. The Project Description below provides the overall motivation and objectives for the project as well as a summary of programmatic direction. It is followed by a short description of each task and the resulting deliverables.

Marleau, Peter; Brubaker, Erik

2014-11-01T23:59:59.000Z

470

Stress-MI and domain studies in Co-based nanocrystalline ribbons Sandhya Dwevedi a  

E-Print Network [OSTI]

Stress-MI and domain studies in Co-based nanocrystalline ribbons Sandhya Dwevedi a , G on the magnetoimpedance (MI) effect in melt-spun (Co1Ă?xFex)89Zr7B4 [xÂĽ0, 0.025, 0.05] and (Co0.88Fe0.12)78.4Nb2.6Si9B9Al in large MI. Magnetic domains were investigated in the ribbons through magnetic force microscopy. & 2011

McHenry, Michael E.

471

Dependence of effective internal field of congruent lithium niobate on its domain configuration and stability  

SciTech Connect (OSTI)

Congruent lithium niobate is characterized by its internal field, which arises due to defect clusters within the crystal. Here, it is shown experimentally that this internal field is a function of the molecular configuration in a particular domain and also on the stability of that particular configuration. The measurements of internal field are done using interferometric technique, while the variation of domain configuration is brought about by room temperature high voltage electric field poling.

Das, Ranjit, E-mail: ranjitdas.in@gmail.com, E-mail: souvik2cat@gmail.com, E-mail: srirajib@yahoo.com; Ghosh, Souvik, E-mail: ranjitdas.in@gmail.com, E-mail: souvik2cat@gmail.com, E-mail: srirajib@yahoo.com; Chakraborty, Rajib, E-mail: ranjitdas.in@gmail.com, E-mail: souvik2cat@gmail.com, E-mail: srirajib@yahoo.com [Department of Applied Optics and Photonics, University of Calcutta, JD-2, Sector III, Salt Lake, Kolkata 700098 (India)

2014-06-28T23:59:59.000Z

472

VAST: A Human-Centered, Domain-Independent Video Analysis Support Tool  

E-Print Network [OSTI]

VAST: A HUMAN-CENTERED, DOMAIN-INDEPENDENT VIDEO ANALYSIS SUPPORT TOOL A Dissertation by MARLO FAYE NORDT Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of DOCTOR OF PHILOSOPHY December 2008 Major Subject: Computer Science VAST: A HUMAN-CENTERED, DOMAIN-INDEPENDENT VIDEO ANALYSIS SUPPORT TOOL A Dissertation by MARLO FAYE NORDT Submitted to the Office of Graduate...

Nordt, Marlo Faye

2011-08-08T23:59:59.000Z

473

Conservation of reactive electromagnetic energy in reactive time  

E-Print Network [OSTI]

The complex Poynting theorem (CPT) is extended to a canonical time-scale domain $(t,s)$. Time-harmonic phasors are replaced by the positive-frequency parts of general fields, which extend analytically to complex time $t+is$, with $s>0$ interpreted as a time resolution scale. The real part of the extended CPT gives conservation in $t$ of a time-averaged field energy, and its imaginary part gives conservation in $s$ of a time-averaged reactive energy. In both cases, the averaging windows are determined by a Cauchy kernel of width $\\Delta t\\sim \\pm s$. This completes the time-harmonic CPT, whose imaginary part is generally supposed to be vaguely `related to' reactive energy without giving a conservation law, or even an expression, for the latter. The interpretation of $s$ as reactive time, tracking the leads and lags associated with stored capacitative and inductive energy, gives a simple explanation of the volt-ampere reactive (var) unit measuring reactive power: a var is simply one Joule per reactive second. The related 'complex radiation impedance density' is introduced to represent the field's local reluctance to radiate.

Gerald Kaiser

2015-01-05T23:59:59.000Z

474

Conservation of reactive electromagnetic energy in reactive time  

E-Print Network [OSTI]

The complex Poynting theorem (CPT) is extended to a canonical time-scale domain $(t,s)$. Time-harmonic phasors are replaced by the positive-frequency parts of general fields, which extend analytically to complex time $t+is$, with $s>0$ interpreted as a time resolution scale. The real part of the extended CPT gives conservation in $t$ of a time-averaged field energy, and its imaginary part gives conservation in $s$ of a time-averaged reactive energy. In both cases, the averaging windows are determined by a Cauchy kernel of width $\\Delta t\\sim \\pm s$. This completes the time-harmonic CPT, whose imaginary part is generally supposed to be vaguely `related to' reactive energy without giving a conservation law, or even an expression, for the latter. The interpretation of $s$ as reactive time, tracking the leads and lags associated with stored capacitative and inductive energy, gives a simple explanation of the volt-ampere reactive (var) unit measuring reactive power: a var is simply one Joule per reactive second. T...

Kaiser, Gerald

2015-01-01T23:59:59.000Z

475

Ultraviolet laser-induced poling inhibition produces bulk domains in MgO-doped lithium niobate crystals  

SciTech Connect (OSTI)

We report the realization of high-resolution bulk domains achieved using a shallow, structured, domain inverted surface template obtained by UV laser-induced poling inhibition in MgO-doped lithium niobate. The quality of the obtained bulk domains is compared to those of the template and their application for second harmonic generation is demonstrated. The present method enables domain structures with a period length as small as 3??m to be achieved. Furthermore, we propose a potential physical mechanism that leads to the transformation of the surface template into bulk domains.

Boes, Andreas, E-mail: s3363819@student.rmit.edu.au; Steigerwald, Hendrik; Sivan, Vijay; Mitchell, Arnan [School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3001 (Australia); ARC Center for Ultra-high Bandwidth Devices for Optical Systems (CUDOS), RMIT University, Melbourne, Victoria 3001 (Australia); Yudistira, Didit [School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3001 (Australia); Wade, Scott [Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122 (Australia); Mailis, Sakellaris [Optoelectronics Research Centre, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom); Soergel, Elisabeth [Institute of Physics, University of Bonn, Wegelerstr. 8, 53115 Bonn (Germany)

2014-09-01T23:59:59.000Z

476

STOPPING TIMES IN QUANTUM MECHANICS  

E-Print Network [OSTI]

(Stinespring, Kraus). 3". Time-dependant case General time evolution of an open quantum sys- tem = (Pt)t0

Attal, Stéphane

477

Calcium-dependent Membrane Penetration Is a Hallmark of the C2 Domain of Cytosolic Phospholipase A2 Whereas the C2A Domain  

E-Print Network [OSTI]

-stranded anti-parallel -sandwich. The most notable structural differ- ences occur in three loops at the calciumCalcium-dependent Membrane Penetration Is a Hallmark of the C2 Domain of Cytosolic Phospholipase A2 of their structures and calcium binding. Here we demonstrate that the protein-lipid interaction is dramatically

Williams, Roger L.

478

Rick Grush Brain time and phenomenological time (draft) Page 1/37 Brain time and phenomenological time  

E-Print Network [OSTI]

Rick Grush Brain time and phenomenological time (draft) Page 1/37 Brain time and phenomenological "forthwith" in a common structure. - Edmund Husserl, Phenomenology of Inner Time Consciousness1 1 time and phenomenological time (draft) Page 2/37 information-processing structure that accounts

Grush, Rick

479

Template-based CTA to x-ray angio rigid registration of coronary arteries in frequency domain with automatic x-ray segmentation  

SciTech Connect (OSTI)

Purpose: A key challenge for image guided coronary interventions is accurate and absolutely robust image registration bringing together preinterventional information extracted from a three-dimensional (3D) patient scan and live interventional image information. In this paper, the authors present a novel scheme for 3D to two-dimensional (2D) rigid registration of coronary arteries extracted from preoperative image scan (3D) and a single segmented intraoperative x-ray angio frame in frequency and spatial domains for real-time angiography interventions by C-arm fluoroscopy.Methods: Most existing rigid registration approaches require a close initialization due to the abundance of local minima and high complexity of search algorithms. The authors' method eliminates this requirement by transforming the projections into translation-invariant Fourier domain for estimating the 3D pose. For 3D rotation recovery, template Digitally Reconstructed Radiographs (DRR) as candidate poses of 3D vessels of segmented computed tomography angiography are produced by rotating the camera (image intensifier) around the DICOM angle values with a specific range as in C-arm setup. The authors have compared the 3D poses of template DRRs with the segmented x-ray after equalizing the scales in three domains, namely, Fourier magnitude, Fourier phase, and Fourier polar. The best rotation pose candidate was chosen by one of the highest similarity measures returned by the methods in these domains. It has been noted in literature that frequency domain methods are robust against noise and occlusion which was also validated by the authors' results. 3D translation of the volume was then recovered by distance-map based BFGS optimization well suited to convex structure of the authors' objective function without local minima due to distance maps. A novel automatic x-ray vessel segmentation was also performed in this study.Results: Final results were evaluated in 2D projection space for patient data; and with ground truth values and landmark distances for the images acquired with a solid phantom vessel. Results validate that rotation recovery in frequency domain is robust against differences in segmentations in two modalities. Distance-map translation is successful in aligning coronary trees with highest possible overlap.Conclusions: Numerical and qualitative results show that single view rigid alignment in projection space is successful. This work can be extended with multiple views to resolve depth ambiguity and with deformable registration to account for nonrigid motion in patient data.

Aksoy, Timur; Unal, Gozde [Sabanci University, Tuzla, Istanbul 34956 (Turkey)] [Sabanci University, Tuzla, Istanbul 34956 (Turkey); Demirci, Stefanie; Navab, Nassir [Computer Aided Medical Procedures (CAMP), Technical University of Munich, Garching, 85748 (Germany)] [Computer Aided Medical Procedures (CAMP), Technical University of Munich, Garching, 85748 (Germany); Degertekin, Muzaffer [Yeditepe University Hospital, Istanbul 34752 (Turkey)] [Yeditepe University Hospital, Istanbul 34752 (Turkey)

2013-10-15T23:59:59.000Z

480

Tevatron injection timing  

SciTech Connect (OSTI)

Bunched beam transfer from one accelerator to another requires coordination and synchronization of many ramped devices. During collider operation timing issues are more complicated since one has to switch from proton injection devices to antiproton injection devices. Proton and antiproton transfers are clearly distinct sequences since protons and antiprotons circulate in opposite directions in the Main Ring (MR) and in the Tevatron. The time bumps are different, the kicker firing delays are different, the kickers and lambertson magnets are different, etc. Antiprotons are too precious to be used for tuning purposes, therefore protons are transferred from the Tevatron back into the Main Ring, tracing the path of antiprotons backwards. This tuning operation is called ``reverse injection.`` Previously, the reverse injection was handled in one supercycle. One batch of uncoalesced bunches was injected into the Tevatron and ejected after 40 seconds. Then the orbit closure was performed in the MR. In the new scheme the lambertson magnets have to be moved and separator polarities have to be switched, activities that cannot be completed in one supercycle. Therefore, the reverse injection sequence was changed. This involved the redefinition of TVBS clock event $D8 as MRBS $D8 thus making it possible to inject 6 proton batches (or coalesced bunches) and eject them one at a time on command, performing orbit closure each time in the MR. Injection devices are clock event driven. The TCLK is used as the reference clock. Certain TCLK events are triggered by the MR beam synchronized clock (MRBS) events. Some delays are measured in terms of MRBS ticks and MR revolutions. See Appendix A for a brief description of the beam synchronized clocks.

Saritepe, S.; Annala, G.

1993-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "time domain reflectometry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Frequency domain computation of synthetic vertical seismic profiles  

E-Print Network [OSTI]

wavelet extracted from an ARCO VSP at 475 ft 47 50 19 The corresponding spectra of the input wavelet extracted from an ARCO VSP at 475 ft 51 20 Artifacts 52 21 Butterworth filtered spectra with cutoff frequency at and 3 dB point of the filter at 200... extracted from an ARCO VSP data set recorded at 475 ft in the subsurface. The last 200 output sample points inside the time window were put in front of the first sample to avoid the non-causal wrap around effect due to discrete sampling the artificial...

Wu, Ru-Chuan

1983-01-01T23:59:59.000Z

482

Catalytic domains of the LAR and CD45 protein tyrosine phosphatases from Escherichia coli expression systems: Purification and characterization for specificity and mechanism  

SciTech Connect (OSTI)

The cytoplasmic domains of two human transmembrane protein tyrosine phosphatases (PTPases), LAR and CD45, have been expressed in Escherichia coli, purified to near-homogeneity, and compared for catalytic efficiency toward several phosphotyrosine-containing peptide substrates. A 615-residue LAR fragment (LAR-D1D2) containing both tandemly repeated PTPase domains shows almost identical specific activity and high catalytic efficiency as the 40-kDa single-domain LAR-D1 fragment, consistent with a single functional active site in the 70-kDa LAR-D1D2 enzyme. A 90-kDa fragment of the human leukocyte CD45 PTPase, containing two similar tandemly repeated PTPase domains, shows parallel specificity to LAR-D1 and LAR-D1D2 with a high k{sub cat}/K{sub M} value for a phosphotyrosyl undecapeptide. Sufficient purified LAR-D1 and LAR-D1D2 PTPases were available to demonstrate enzymatic exchange of {sup 18}O from {sup 18}O{sub 4} inorganic phosphate into H{sub 2} {sup 16}O at rates of {approximately}1 {times} 10{sup {minus}2} s{sup {minus}1}. The oxygen-18 exchange probably proceeds via a phosphoenzyme intermediate. Brief incubation of all three PTPase fragments with a ({sup 32}P)phosphotyrosyl peptide substrate prior to quench with SDS sample buffer and gel electrophoresis led to autoradiographic detection of {sup 32}P-labeled enzymes. Pulse/chase studies on the LAR {sup 32}P-enzyme showed turnover of the labeled phosphoryl group.

Cho, Hyeongjin; Ramer, S.E.; Itoh, Michiyasu; Saito, Haruo; Walsh, C.T. (Harvard Medical School, Boston, MA (United States)); Kitas, E.; Bannwarth, W.; Burn, P. (Hoffmann-La Roche, Basel (Switzerland))

1992-01-14T23:59:59.000Z

483

Space time and rotations  

E-Print Network [OSTI]

The paper considers the problem of finding the metric of space time around a rotating, weakly gravitating body. Both external and internal metric tensors are consistently found, together with an appropriate source tensor. All tensors are calculated at the lowest meaningful approximation in a power series. The two physical parameters entering the equations (the mass and the angular momentum per unit mass) are assumed to be such that the mass effects are negligible with respect to the rotation effects. A non zero Riemann tensor is obtained. The order of magnitude of the effects at the laboratory scale is such as to allow for experimental verification of the theory.

A. Tartaglia

2002-01-04T23:59:59.000Z

484

Time-Resolved  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduled System BurstLong TermScience&Time-Resolved

485

HAWC Timing Calibration  

E-Print Network [OSTI]

The High-Altitude Water Cherenkov (HAWC) Experiment is a second-generation highsensitivity gamma-ray and cosmic-ray detector that builds on the experience and technology of the Milagro observatory. Like Milagro, HAWC utilizes the water Cherenkov technique to measure extensive air showers. Instead of a pond filled with water (as in Milagro) an array of closely packed water tanks is used. The event direction will be reconstructed using the times when the PMTs in each tank are triggered. Therefore, the timing calibration will be crucial for reaching an angular resolution as low as 0.25 degrees.We propose to use a laser calibration system, patterned after the calibration system in Milagro. Like Milagro, the HAWC optical calibration system will use ~1 ns laser light pulses. Unlike Milagro, the PMTs are optically isolated and require their own optical fiber calibration. For HAWC the laser light pulses will be directed through a series of optical fan-outs and fibers to illuminate the PMTs in approximately one half o...

Huentemeyer, Petra; Dingus, Brenda

2009-01-01T23:59:59.000Z

486

Ionic field effect and memristive phenomena in single-point ferroelectric domain switching  

SciTech Connect (OSTI)

Electric field induced polarization switching underpins most functional applications of ferroelectric materials in information technology, materials science, and optoelectronics. In the last 20 years, much attention has been focused on the switching of individual domains using scanning probe microscopy, both as model of ferroelectric data storage and approach to explore fundamental physics of ferroelectric switching. The classical picture of tip induced switching includes formation of cylindrical domain oriented along the tip field, with the domain size is largely determined by the tip-induced field distribution and domain wall motion kinetics. The polarization screening is recognized as a necessary precondition to the stability of ferroelectric phase; however, screening processes are generally considered to be uniformly efficient and not leading to changes in switching behavior. Here, we demonstrate that single-point tip-induced polarization switching can give rise to a surprisingly broad range of domain morphologies, including radial and angular instabilities. These behaviors are traced to the surface screening charge dynamics, which in some cases can even give rise to anomalous switching against the electric field (ionic field effect). The implications of these behaviors for ferroelectric materials and devices are discussed.

Ievlev, Anton [ORNL] [ORNL; Morozovska, A. N. [National Academy of Science of Ukraine, Kiev, Ukraine] [National Academy of Science of Ukraine, Kiev, Ukraine; Eliseev, E. A. [National Academy of Science of Ukraine, Kiev, Ukraine] [National Academy of Science of Ukraine, Kiev, Ukraine; Shur, Vladimir Ya. [Ural Federal University, Russia] [Ural Federal University, Russia; Kalinin, Sergei V [ORNL] [ORNL

2014-01-01T23:59:59.000Z

487

Metallic Interface Emerging at Magnetic Domain Wall of Antiferromagnetic Insulator---Fate of Extinct Weyl Electrons  

E-Print Network [OSTI]

Topological insulators, in contrast to ordinary semiconductors, accompany protected metallic surfaces described by Dirac-type fermions. Here, we theoretically show another emergent two-dimensional metal embedded in the bulk insulator is realized at a magnetic domain wall. The domain wall has long been studied as ingredients of both old-fashioned and leading-edge spintronics. The domain wall here, as an interface of seemingly trivial antiferromagnetic insulators, emergently realizes a functional interface preserved by zero modes with robust two-dimensional Fermi surfaces, where pyrochlore iridium oxides proposed to host condensed-matter realization of Weyl fermions offer such examples at low temperatures. The existence of ingap states pinned at domain walls, theoretically resembling spin/charge solitons in polyacetylene, and protected as the edge of hidden one-dimensional weak Chern insulators characterized by a zero-dimensional class A topological invariant, solves experimental puzzles observed in R2Ir2O7 with rare earth elements R. The domain wall realizes a novel quantum confinement of electrons and embosses a net uniform magnetization, which enables magnetic control of electronic interface transports beyond semiconductor paradigm.

Youhei Yamaji; Masatoshi Imada

2014-03-12T23:59:59.000Z

488

Space-time properties of Gram-Schmidt vectors in classical Hamiltonian evolution Jason R. Green,1,2,3,* Julius Jellinek,2,  

E-Print Network [OSTI]

Space-time properties of Gram-Schmidt vectors in classical Hamiltonian evolution Jason R. Green,1 tangent space directions play equivalent roles in the local chaotic motions of classical Hamiltonian many vectors, whose statistical properties may depend on the chosen phase space-time domain of a trajec- tory

Berry, R. Stephen

489

Completing the complex Poynting theorem: Conservation of reactive energy in reactive time  

E-Print Network [OSTI]

The complex Poynting theorem is extended canonically to a time-scale domain $(t, s)$ by replacing the phasors of time-harmonic fields by the analytic signals $X(r, t+is)$ of fields $X(r,t)$ with general time dependence. The imaginary time $s>0$ is shown to play the role of a time resolution scale, and the extended Poynting theorem splits into two conservation laws: its real part gives the conservation in $t$ of the scale-averaged active energy at fixed $s$, and its imaginary part gives the conservation in $s$ of the scale-averaged reactive energy at fixed $t$. At coarse scales (large $s$, slow time), where the system reduces to the circuit level, this may have applications to the theory of electric power transmission and conditioning. At fine scales (small $s$, fast time) it describes reactive energy dynamics in radiating systems.

Gerald Kaiser

2014-12-11T23:59:59.000Z

490

Real time automated inspection  

DOE Patents [OSTI]

A method and apparatus are described relating to the real time automatic detection and classification of characteristic type surface imperfections occurring on the surfaces of material of interest such as moving hot metal slabs produced by a continuous steel caster. A data camera transversely scans continuous lines of such a surface to sense light intensities of scanned pixels and generates corresponding voltage values. The voltage values are converted to corresponding digital values to form a digital image of the surface which is subsequently processed to form an edge-enhanced image having scan lines characterized by intervals corresponding to the edges of the image. The edge-enhanced image is thresholded to segment out the edges and objects formed by the edges by interval matching and bin tracking. Features of the objects are derived and such features are utilized to classify the objects into characteristic type surface imperfections. 43 figs.

Fant, K.M.; Fundakowski, R.A.; Levitt, T.S.; Overland, J.E.; Suresh, B.R.; Ulrich, F.W.

1985-05-21T23:59:59.000Z

491

Time encoded radiation imaging  

DOE Patents [OSTI]

The various technologies presented herein relate to detecting nuclear material at a large stand-off distance. An imaging system is presented which can detect nuclear material by utilizing time encoded imaging relating to maximum and minimum radiation particle counts rates. The imaging system is integrated with a data acquisition system that can utilize variations in photon pulse shape to discriminate between neutron and gamma-ray interactions. Modulation in the detected neutron count rates as a function of the angular orientation of the detector due to attenuation of neighboring detectors is utilized to reconstruct the neutron source distribution over 360 degrees around the imaging system. Neutrons (e.g., fast neutrons) and/or gamma-rays are incident upon scintillation material in the imager, the photons generated by the scintillation material are converted to electrical energy from which the respective neutrons/gamma rays can be determined and, accordingly, a direction to, and the location of, a radiation source identified.

Marleau, Peter; Brubaker, Erik; Kiff, Scott

2014-10-21T23:59:59.000Z

492

The Large Observatory For X-ray Timing: LOFT  

E-Print Network [OSTI]

LOFT, the Large Observatory for X-ray Timing, is a new space mission concept devoted to observations of Galactic and extra-Galactic sources in the X-ray domain with the main goals of probing gravity theory in the very strong field environment of black holes and other compact objects, and investigating the state of matter at supra-nuclear densities in neutron stars. The instruments on-board LOFT, the Large area detector and the Wide Field Monitor combine for the first time an unprecedented large effective area (~10 m2 at 8 keV) sensitive to X-ray photons mainly in the 2-30 keV energy range and a spectral resolution approaching that of CCD-based telescopes (down to 200 eV at 6 keV). LOFT is currently competing for a launch of opportunity in 2022 together with the other M3 mission candidates of the ESA Cosmic Vision Program.

Bozzo, E

2013-01-01T23:59:59.000Z

493

Digital Frequency Domain Multiplexer for mm-Wavelength Telescopes  

SciTech Connect (OSTI)

An FPGA based digital signal processing (DSP) system for biasing and reading out multiplexed bolometric detectors for mm-wavelength telescopes is presented. This readout system is being deployed for balloon-borne and ground based cosmology experiments with the primary goal of measuring the signature of inflation with the Cosmic Microwave Background Radiation. The system consists of analog superconducting electronics running at 250 mK and 4 K, coupled to digital room temperature backend electronics described here. The digital electronics perform the real time functionality with DSP algorithms implemented in firmware. A soft embedded processor provides all of the slow housekeeping control and communications. Each board in the system synthesizes multi-frequency combs of 8 to 32 carriers in the MHz band to bias the detectors. After the carriers have been modulated with the sky-signal by the detectors, the same boards digitize the comb directly. The carriers are mixed down to base-band and low pass filtered. The signal bandwidth of 0.050Hz-100 Hz places extreme requirements on stability and requires powerful filtering techniques to recover the sky-signal from the MHz carriers.

Spieler, Helmuth G; Dobbs, Matt; Bissonnette, Eric; Spieler, Helmuth G.

2007-07-23T23:59:59.000Z

494

Deciding Timed Bisimulation for Timed Automata Using Zone Valuation Graph  

E-Print Network [OSTI]

Deciding Timed Bisimulation for Timed Automata Using Zone Valuation Graph Shibashis Guha, Chinmay was first proved to be decidable for timed automata by Cerans using a product construction method on region graph. Several other methods have been proposed in the literature since then for decid- ing timed

Prasad, Sanjiva

495

Thermodynamics of the six-vertex model in an L-shaped domain  

E-Print Network [OSTI]

We consider the six-vertex model in an L-shaped domain of the square lattice, with domain wall boundary conditions. For free-fermion vertex weights the partition function can be expressed in terms of some Hankel determinant, or equivalently as a Coulomb gas with discrete measure and a non-polynomial potential with two hard walls. We use Coulomb gas methods to study the partition function in the thermodynamic limit. We obtain the free energy of the six-vertex model as a function of the parameters describing the geometry of the scaled L-shaped domain. Under variations of these parameters the system undergoes a third-order phase transition. The result can also be considered in the context of dimer models, for the perfect matchings of the Aztec diamond graph with a cut-off corner.

Filippo Colomo; Andrei G. Pronko

2015-01-13T23:59:59.000Z

496

Substrate Clamping Effects on Irreversible Domain Wall Dynamics in Lead Zirconate Titanate Thin Films  

SciTech Connect (OSTI)

The role of long-range strain interactions on domain wall dynamics is explored through macroscopic and local measurements of nonlinear behavior in mechanically clamped and released polycrystalline lead zirconate-titanate (PZT) films. Released films show a dramatic change in the global dielectric nonlinearity and its frequency dependence as a function of mechanical clamping. Furthermore, we observe a transition from strong clustering of the nonlinear response for the clamped case to almost uniform nonlinearity for the released film. This behavior is ascribed to increased mobility of domain walls. These results suggest the dominant role of collective strain interactions mediated by the local and global mechanical boundary conditions on the domain wall dynamics. The work presented in this Letter demonstrates that measurements on clamped films may considerably underestimate the piezoelectric coefficients and coupling constants of released structures used in microelectromechanical systems, energy harvesting systems, and microrobots.

Griggio, Flavio [ORNL; Jesse, Stephen [ORNL; Kumar, Amit [ORNL; Ovchinnikov, Oleg S [ORNL; Kim, H. [Pennsylvania State University, University Park, PA; Jackson, T. N. [Pennsylvania State University, University Park, PA; Damjanovic, Dragan [ORNL; Kalinin, Sergei V [ORNL; Trolier-Mckinstry, Susan E [ORNL

2012-01-01T23:59:59.000Z

497

Topological constraints in geometric deformation quantization on domains with multiple boundary components  

E-Print Network [OSTI]

A topological constraint on the possible values of the universal quantization parameter is revealed in the case of geometric quantization on (boundary) curves diffeomorphic to $S^1$, analytically extended on a bounded domain in $\\mathbb{C}$, with $n \\ge 2$ boundary components. Unlike the case of one boundary component (such as the canonical Berezin quantization of the Poincar\\'e upper-half plane or the case of conformally-invariant 2D systems), the more general case considered here leads to a strictly positive minimum value for the quantization parameter, which depends on the geometrical data of the domain (specifically, the total area and total perimeter in the smooth case). It is proven that if the lower bound is attained, then $n=2$ and the domain must be annular, with a direct interpretation in terms of the global monodromy.

Razvan Teodorescu

2014-12-24T23:59:59.000Z

498

SREELS analysis of oxygen-rich inversion domain boundaries in aluminum nitride  

SciTech Connect (OSTI)

Spatially resolved electron energy loss spectroscopy analysis has been conducted on planar inversion domain boundaries in aluminum nitride. The defects were found to contain 1.5 monolayers of oxygen, in agreement with the most recent structural model of Westwood. From variations in near-edge structure, the local atomic environments of both oxygen and aluminum are compared with {alpha}-Al{sub 2}O{sub 3}, {gamma}-Al{sub 2}O{sub 3} and {gamma}-AlON standards. Based upon this study the structure of the inversion domain boundary is found to resemble that of the cubic {gamma}-AlON spinel, and eliminates from consideration those structural models based upon {alpha}-Al{sub 2}O{sub 3}. Furthermore, quantification of the shape resonances provided Al-O bond-length data from the inversion domain boundary interface. These distances closely agree with the Youngman Model that has recently been further refined by Westwood et al.

Bruley, J.; Zhao, J.C.; Notis, M.R. [Lehigh Univ. Bethlehem, PA (United States). Dept. of Materials Science and Engineering; Westwood, A.D. [IBM T.J. Watson Research Center, Yorktown Heights, NY (United States); Youngman, R.A. [Carborundum Co., Phoenix, AZ (United States)

1995-09-01T23:59:59.000Z

499

Ferroelectric domain building blocks for photonic and nonlinear optical microstructures in LiNbO{sub 3}  

SciTech Connect (OSTI)

The ability to manipulate the size and depth of poling inhibited domains, which are produced by UV laser irradiation of the +z face of lithium niobate crystals followed by electric field poling, is demonstrated. It is shown that complex domain structures, much wider than the irradiating laser spot, can be obtained by partially overlapping the subsequent UV laser irradiated tracks. The result of this stitching process is one uniform domain without any remaining trace of its constituent components thus increasing dramatically the utility of this method for the fabrication of surface microstructures as well as periodic and aperiodic domain lattices for nonlinear optical and surface acoustic wave applications. Finally, the impact of multi exposure on the domain characteristics is also investigated indicating that some control over the domain depth can be attained.

Zisis, G.; Ying, C. Y. J.; Mailis, S. [Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ (United Kingdom); Soergel, E. [Institute of Physics, University of Bonn, Wegelerstrasse 8, 53115 Bonn (Germany)

2014-03-28T23:59:59.000Z

500

Domain switching by electron beam irradiation of Z{sup +}-polar surface in Mg-doped lithium niobate  

SciTech Connect (OSTI)

The appearance of the static domains with depth above 200??m in the bulk of MgO-doped lithium niobate single crystals as a result of focused electron beam irradiation of Z{sup +}-polar surface was demonstrated. The created domain patterns were visualized by high-resolution methods including piezoresponse force microscopy, scanning electron microscopy, and confocal Raman microscopy. The main stages of the domain structure formation were revealed and explained in terms of the original model.

Shur, V. Ya., E-mail: vladimir.shur@urfu.ru; Chezganov, D. S.; Smirnov, M. M.; Alikin, D. O.; Neradovskiy, M. M.; Kuznetsov, D. K. [Institute of Natural Sciences, Ural Federal University, 620000 Ekaterinburg (Russian Federation)

2014-08-04T23:59:59.000Z