Powered by Deep Web Technologies
Note: This page contains sample records for the topic "finer spatial resolution" 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.


1

Particle detector spatial resolution  

DOE Patents (OSTI)

Method and apparatus for producing separated columns of scintillation layer material, for use in detection of X-rays and high energy charged particles with improved spatial resolution. A pattern of ridges or projections is formed on one surface of a substrate layer or in a thin polyimide layer, and the scintillation layer is grown at controlled temperature and growth rate on the ridge-containing material. The scintillation material preferentially forms cylinders or columns, separated by gaps conforming to the pattern of ridges, and these columns direct most of the light produced in the scintillation layer along individual columns for subsequent detection in a photodiode layer. The gaps may be filled with a light-absorbing material to further enhance the spatial resolution of the particle detector.

Perez-Mendez, Victor (Berkeley, CA)

1992-01-01T23:59:59.000Z

2

Spatial resolution in vector potential photoelectron microscopy  

SciTech Connect

The experimental spatial resolution of vector potential photoelectron microscopy is found to be much higher than expected because of the cancellation of one of the expected contributions to the point spread function. We present a new calculation of the spatial resolution with support from finite element ray tracing, and experimental results.

Browning, R. [R. Browning Consultants, 1 Barnhart Place, Shoreham, New York 11786 (United States)] [R. Browning Consultants, 1 Barnhart Place, Shoreham, New York 11786 (United States)

2014-03-15T23:59:59.000Z

3

Identifying chromatin interactions at high spatial resolution  

E-Print Network (OSTI)

This thesis presents two computational approaches for identifying chromatin interactions at high spatial resolution from ChIA-PET data. We introduce SPROUT which is a hierarchical probabilistic model that discovers high ...

Reeder, Christopher Campbell

2014-01-01T23:59:59.000Z

4

Property:SpatialResolution | Open Energy Information  

Open Energy Info (EERE)

Property Edit History Facebook icon Twitter icon Property:SpatialResolution Jump to: navigation, search This is a property of type String. Retrieved from "http:en.openei.org...

5

Study of Fuzzy based Classifier Parameter across Spatial Resolution  

E-Print Network (OSTI)

Classification and interpretation of satellite images are complex processes and that may be affected by various factors. Most fuzzy based soft classification techniques have been used to provide a more appropriate and accurate area estimation when fine, medium and coarse spatial resolution data are being used. Spatial resolution determines the spatial details on the Earth surface and greatly reduces the problem of mixed pixel. This paper examines the effect of weighting exponent „m ? parameter of fuzzy c-means (FCM) and possibilistic c-mean (PCM) classifiers with respect to entropy, an uncertainty indicator for different extracted classes. This paper measures uncertainty variations across spatial resolution for different class extraction. Uncertainty can be defined as skepticism wherein entropy is an absolute indicator of an

Rakesh Dwivedi; S. K. Ghosh

6

Instrument Series: Spectroscopy and Diffraction High Spatial Resolution  

NLE Websites -- All DOE Office Websites (Extended Search)

High Spatial Resolution High Spatial Resolution Secondary Ion Mass Spectrometry (NanoSIMS) EMSL's novel, new-generation ion microprobe extends high spatial resolution secondary ion mass spectrometry (NanoSIMS) analysis to extremely small areas (down to 50 nm) and volumes while maintaining high sensitivity (e.g., ppm in element imaging) at high mass resolution. NanoSIMS can measure up to seven ions in parallel, offering perfect isotopic ratio results from the same small volume for perfect image superimposition. NanoSIMS can be used for enhanced imaging of cellular structures; simultaneous imaging of elements/isotopes on minerals and soft surfaces at the nanoscale; and imaging elements and isotopes of aerosols, nanoparticles, and organic and inorganic surfaces. Research Applications

7

Improved Spatial Resolution for Reflection Mode Infrared Microscopy  

SciTech Connect

Standard commercial infrared microscopes operating in reflection mode use a mirror to direct the reflected light from the sample to the detector. This mirror blocks about half of the incident light, however, and thus degrades the spatial resolution by reducing the umerical aperture of the objective. Here, we replace the mirror with a 50% beamsplitter to allow full illumination of the objective and retain a way to direct the reflected light to the detector. The improved spatial resolution is demonstrated using two different microscopes apable of diffraction-limited resolution: the first microscope is coupled to a synchrotron source and utilizes a single point detector, whereas the second microscope has a standard blackbody source and uses a focal planetarray (FPA) detector.

Bechtel, Hans A.; Martin, Michael C.; May, T.E.; Lerch, Philippe

2009-10-09T23:59:59.000Z

8

High Spatial Resolution Observations of Loops in the Solar Corona  

E-Print Network (OSTI)

Understanding how the solar corona is structured is of fundamental importance to determining how the Sun's upper atmosphere is heated to high temperatures. Recent spectroscopic studies have suggested that an instrument with a spatial resolution of 200km or better is necessary to resolve coronal loops. The High Resolution Coronal Imager (Hi-C) achieved this performance on a rocket flight in July 2012. We use Hi-C data to measure the Gaussian widths of 91 loops observed in the solar corona and find a distribution that peaks at about 270km. We also use Atmospheric Imaging Assembly (AIA) data for a subset of 79 of these loops and find that their temperature distributions are narrow. These observations provide further evidence that loops in the solar corona are structured at a scale of several hundred kilometers, well above the spatial scale of proposed physical mechanisms.

Brooks, David H; Ugarte-Urra, Ignacio; Winebarger, Amy R

2013-01-01T23:59:59.000Z

9

HIGH SPATIAL RESOLUTION OBSERVATIONS OF LOOPS IN THE SOLAR CORONA  

SciTech Connect

Understanding how the solar corona is structured is of fundamental importance to determine how the Sun's upper atmosphere is heated to high temperatures. Recent spectroscopic studies have suggested that an instrument with a spatial resolution of 200 km or better is necessary to resolve coronal loops. The High Resolution Coronal Imager (Hi-C) achieved this performance on a rocket flight in 2012 July. We use Hi-C data to measure the Gaussian widths of 91 loops observed in the solar corona and find a distribution that peaks at about 270 km. We also use Atmospheric Imaging Assembly data for a subset of these loops and find temperature distributions that are generally very narrow. These observations provide further evidence that loops in the solar corona are often structured at a scale of several hundred kilometers, well above the spatial scale of many proposed physical mechanisms.

Brooks, David H.; Ugarte-Urra, Ignacio [College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22030 (United States); Warren, Harry P. [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States); Winebarger, Amy R. [NASA Marshall Space Flight Center, ZP 13, Huntsville, AL 35812 (United States)

2013-08-01T23:59:59.000Z

10

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution  

NLE Websites -- All DOE Office Websites (Extended Search)

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Wednesday, 31 August 2005 00:00...

11

Visualization of High Resolution Spatial Mass Spectrometric Data during Acquisition  

SciTech Connect

Mass Spectrometric Imaging (IMS) allows the generation of 2D ion density maps that help visualize molecules present in sections of tissues and cells. The combination of spatial and mass resolution results in large and complex data sets that require powerful and efficient analysis and interpretation. In this paper, a graphical user interface (GUI) that can visualize the large data during data acquisition itself is presented. The program also has the ability to perform processing and analysis of the dataset. The various functions of the GUI including visualization of mass spectra, generation of 2D maps for selected species, manipulation of the heat maps, and peak identification are also presented.

Thomas, Mathew; Heath, Brandi S.; Laskin, Julia; Li, Dongsheng; Liu, Ellen C.; Hui, Katrina L.; Kuprat, Andrew P.; Kleese van Dam, Kerstin; Carson, James P.

2012-08-28T23:59:59.000Z

12

Spatially-varying SAR models and Bayesian Inference for High-Resolution Lattice Data  

E-Print Network (OSTI)

Spatially-varying SAR models and Bayesian Inference for High-Resolution Lattice Data Chiranjit Inverse problems Lattice data Non-stationary random fields Satellite imagery data Sparse spatial model- lenge our modelling and computational abilities as data volumes increase. Similarly, as spatial scales

West, Mike

13

The Impact of Spatial Resolution on Model-Derived Radiative Heating  

NLE Websites -- All DOE Office Websites (Extended Search)

Impact of Spatial Resolution Impact of Spatial Resolution on Model-Derived Radiative Heating W. O'Hirok and C. Gautier Institute for Computational Earth System Science University of California Santa Barbara, California C. Gautier Department of Geography University of California Santa Barbara, California Introduction At the typical spatial resolution of climate and weather forecasting models, clouds are portrayed as uniform plane-parallel entities with three-dimensional (3D) radiative effects generally considered not important. However, as the resolution of these models increase, and with the development of "super parameterizations" (embedded cloud resolving models), there is a need to assess the spatial resolution where 3D effects should not be neglected (Khairoutdinov and Randall 2001). In this study, we perform

14

High Resolution Channel Quantization Rules for Multiuser Spatial Multiplexing Systems  

E-Print Network (OSTI)

) at the transmitter is critical for the operation of the multiuser spatial multiplexing systems. The base station, this information is provided either by training the base station on the reverse links in TDD systems the users. In practical systems, however, temporal and spatial power adaptation are essential as the users

Yu, Wei

15

Time-gating improves the spatial resolution of STED microscopy  

E-Print Network (OSTI)

, Butenandtstr 11, 81377 München, Germany 2 Currently with Center for Systems Biology, Harvard University find that the best resolution for a given pulse power is achieved with a pulse of infinitesimally short duration; however, the maximum resolution can be restored for pulses of finite duration by time

Ulm, Universität

16

A machine learning model of Manhattan air pollution at high spatial resolution  

E-Print Network (OSTI)

A machine-learning model was created to predict air pollution at high spatial resolution in Manhattan, New York using taxi trip data. Urban air pollution increases morbidity and mortality through respiratory and cardiovascular ...

Keeler, Rachel H. (Rachel Heiden)

2014-01-01T23:59:59.000Z

17

Fabricating BRDFs at High Spatial Resolution Using Wave Optics Anat Levin1  

E-Print Network (OSTI)

spatially varying reflectance at a high resolution of up to 220dpi , orders of magnitude greater than such as a BRDF chart [Ren et al. 2011] and a planar light probe [Alldrin and Kriegman. 2006]. Recent attempts

18

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution  

NLE Websites -- All DOE Office Websites (Extended Search)

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Analytical tools that combine spatial resolution with elemental and chemical identification at the nanometer scale along with large penetration depth are indispensable for the life and physical sciences. The XM-1 soft x-ray microscope at the ALS produces images that not only reveal structures but can identify their chemical elements and measure magnetic and other properties as well. Now a new method for creating optical devices with nanoscale accuracy has allowed researchers in Berkeley Lab's Center for X-Ray Optics (CXRO), which built and operates the XM-1, to achieve an extraordinary resolution of better than 15 nm, with the promise of even higher resolution in the near future.

19

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution  

NLE Websites -- All DOE Office Websites (Extended Search)

New Zone Plate for Soft X-Ray New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Wednesday, 31 August 2005 00:00 Analytical tools that combine spatial resolution with elemental and chemical identification at the nanometer scale along with large penetration depth are indispensable for the life and physical sciences. The XM-1 soft x-ray microscope at the ALS produces images that not only reveal structures but can identify their chemical elements and measure magnetic and other properties as well. Now a new method for creating optical devices with nanoscale accuracy has allowed researchers in Berkeley Lab's Center for X-Ray Optics (CXRO), which built and operates the XM-1, to achieve an extraordinary resolution of better than 15 nm, with the promise of even higher resolution in the near future.

20

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution  

NLE Websites -- All DOE Office Websites (Extended Search)

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Analytical tools that combine spatial resolution with elemental and chemical identification at the nanometer scale along with large penetration depth are indispensable for the life and physical sciences. The XM-1 soft x-ray microscope at the ALS produces images that not only reveal structures but can identify their chemical elements and measure magnetic and other properties as well. Now a new method for creating optical devices with nanoscale accuracy has allowed researchers in Berkeley Lab's Center for X-Ray Optics (CXRO), which built and operates the XM-1, to achieve an extraordinary resolution of better than 15 nm, with the promise of even higher resolution in the near future.

Note: This page contains sample records for the topic "finer spatial resolution" 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

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution  

NLE Websites -- All DOE Office Websites (Extended Search)

New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print Analytical tools that combine spatial resolution with elemental and chemical identification at the nanometer scale along with large penetration depth are indispensable for the life and physical sciences. The XM-1 soft x-ray microscope at the ALS produces images that not only reveal structures but can identify their chemical elements and measure magnetic and other properties as well. Now a new method for creating optical devices with nanoscale accuracy has allowed researchers in Berkeley Lab's Center for X-Ray Optics (CXRO), which built and operates the XM-1, to achieve an extraordinary resolution of better than 15 nm, with the promise of even higher resolution in the near future.

22

A New Relational Spatial OLAP Approach For Multi-resolution and Spatio-multidimensional Analysis of Incomplete Field Data  

E-Print Network (OSTI)

, incomplete continuous field, multi-resolution geographic data Abstract: Integrating continuous spatial data to integrate spatial dimensions representing incomplete field data at different resolutions in a classical SOLAP architecture. 1 INTRODUCTION Spatial Data Warehouse (SDW) and Spatial OLAP (SOLAP) systems play

Paris-Sud XI, Université de

23

Evaluating the Effects of Spatial Resolution on Hyperspectral Fire Detection and Temperature Retrieval  

E-Print Network (OSTI)

and background land cover. Previous work has used hyperspectral data acquired from airborne platforms, limiting (Riaño et al., 2002). Hyperspectral sensors utilize a large number of contiguous bands, each, like all airborne sensors, faces issues of varying spatial resolutions and has limited spatial

24

Accepted Manuscript Title: Infrared chemical imaging: spatial resolution evaluation  

E-Print Network (OSTI)

-La Roche A.G., Basel, Switzerland.6 (c) Multi-Dimensional Signal Processing Laboratory, Electrical Engineering Department, Baskin School7 of Engineering, University of California, 1156 High Street, Mailcode is more or less equal to22 the wavelength of the light (i.e. 2.5 to 25 m). Unfortunately, the spatial

Milanfar, Peyman

25

Local Optical Spectroscopies for Subnanometer Spatial Resolution Chemical Imaging  

SciTech Connect

The evanescently coupled photon scanning tunneling microscopes (STMs) have special requirements in terms of stability and optical access. We have made substantial improvements to the stability, resolution, and noise floor of our custom-built visible-photon STM, and will translate these advances to our infrared instrument. Double vibration isolation of the STM base with a damping system achieved increased rigidity, giving high tunneling junction stability for long-duration and high-power illumination. Light frequency modulation with an optical chopper and phase-sensitive detection now enhance the signal-to-noise ratio of the tunneling junction during irradiation.

Weiss, Paul

2014-01-20T23:59:59.000Z

26

Fourier transform infrared cell for surface studies at controlled temperatures and in controlled atmospheres with time resolution and spatial resolution  

Science Journals Connector (OSTI)

A new micro?Fourier transform infrared cell has been constructed and evaluated using (i) the transformation of aurichalcite crystals at 298–475 K (ii) the adsorption/desorption of pyridine on a Cu2O/ZnO junction and (iii) the adsorption of CO on Pt/alumina pellets; it enables spatial and time resolution of processes in such diverse samples held at known thermal and baric conditions. The potential of this cell in catalytic and analytical science is considered.

V. A. Self; P. A. Sermon

1996-01-01T23:59:59.000Z

27

High spatial resolution X-ray and gamma ray imaging system using diffraction crystals  

DOE Patents (OSTI)

A method and a device for high spatial resolution imaging of a plurality of sources of x-ray and gamma-ray radiation are provided. The device comprises a plurality of arrays, with each array comprising a plurality of elements comprising a first collimator, a diffracting crystal, a second collimator, and a detector.

Smither, Robert K. (Hinsdale, IL)

2011-05-17T23:59:59.000Z

28

High spatial resolution subsurface thermal emission microscopy S. B. Ippolito,a)  

E-Print Network (OSTI)

and the Photonics Center, Boston University, 8 Saint Mary's Street, Boston, Massachusetts 02215 Y. Leblebici Microelectronic Systems Laboratory, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland Received improvements in the amount of light collected and the spatial resolution, well beyond the limits

29

HIGH SPATIAL RESOLUTION SOLAR ATLAS IN PROVENCE-ALPES-CTE D'AZUR  

E-Print Network (OSTI)

the advantages of both the satellite-based solar radiation databases and the in situ ground station measurementsHIGH SPATIAL RESOLUTION SOLAR ATLAS IN PROVENCE-ALPES-CÃ?TE D'AZUR Philippe Blanc 1 , Bella EspinarTech / ARMINES, Centre for Energy and Processes, Sophia Antipolis (France) 2 TRANSVALOR, Sophia Antipolis (France

Paris-Sud XI, Université de

30

Influence of spatial resolution on regional climate model derived wind climates  

E-Print Network (OSTI)

of northern Europe is more profound in the wind extremes than in the central tendency. The domain are of similar magnitude to the climate change signal in extreme wind events derived in prior research and mayInfluence of spatial resolution on regional climate model derived wind climates S. C. Pryor,1 G

Pryor, Sara C.

31

Impulse Response Estimation for Spatial Resolution Enhancement in Ultrasonic NDE Imaging  

SciTech Connect

This report describes a signal processing algorithm and MATLAB software for improving spatial resolution in ultrasonic nondestructive evaluation (NDE) imaging of materials. Given a measured reflection signal and an associated reference signal, the algorithm produces an optimal least-squares estimate of the impulse response of the material under test. This estimated impulse response, when used in place of the raw reflection signal, enhances the spatial resolution of the ultrasonic measurements by removing distortion caused by the limited-bandwidth transducers and the materials under test. The theory behind the processing algorithms is briefly presented, while the reader is referred to the bibliography for details. The main focus of the report is to describe how to use the MATLAB software. Two processing examples using actual ultrasonic measurements are provided for tutorial purposes.

Clark, G A

2004-06-25T23:59:59.000Z

32

Application of spatially resolved high resolution crystal spectrometry to inertial confinement fusion plasmas  

SciTech Connect

High resolution ({lambda}/{Delta}{lambda}{approx} 10 000) 1D imaging x-ray spectroscopy using a spherically bent crystal and a 2D hybrid pixel array detector is used world wide for Doppler measurements of ion-temperature and plasma flow-velocity profiles in magnetic confinement fusion plasmas. Meter sized plasmas are diagnosed with cm spatial resolution and 10 ms time resolution. This concept can also be used as a diagnostic of small sources, such as inertial confinement fusion plasmas and targets on x-ray light source beam lines, with spatial resolution of micrometers, as demonstrated by laboratory experiments using a 250-{mu}m {sup 55}Fe source, and by ray-tracing calculations. Throughput calculations agree with measurements, and predict detector counts in the range 10{sup -8}-10{sup -6} times source x-rays, depending on crystal reflectivity and spectrometer geometry. Results of the lab demonstrations, application of the technique to the National Ignition Facility (NIF), and predictions of performance on NIF will be presented.

Hill, K. W.; Bitter, M.; Delgado-Aparacio, L.; Pablant, N. A. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Beiersdorfer, P.; Schneider, M.; Widmann, K. [Physics Division, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Sanchez del Rio, M. [European Synchrotron Radiation Facility, BP 220, 38043-Grenoble Cedex (France); Zhang, L. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)

2012-10-15T23:59:59.000Z

33

Effect of Finite Spatial Resolution on the Turbulent Energy Spectrum Measured in the Coastal Ocean Bottom Boundary Layer  

Science Journals Connector (OSTI)

The effect of finite spatial resolution on the measured energy spectrum is examined via a parametric study using in situ particle image velocimetry (PIV) measurements performed in the bottom boundary layer on the Atlantic continental shelf. Two-...

Erin E. Hackett; Luksa Luznik; Joseph Katz; Thomas R. Osborn

2009-12-01T23:59:59.000Z

34

Detection power, temporal response, and spatial resolution of IRON fMRI in awake, behaving monkeys at 3 Tesla  

E-Print Network (OSTI)

The main goal of this thesis was to systematically characterize the detection sensitivity, temporal response, and spatial resolution of IRON contrast for fMRI within the awake, behaving monkey. Understanding these issues ...

Leite, Francisca Maria Pais Horta

2007-01-01T23:59:59.000Z

35

Relative x-ray collection efficiency, spatial resolution, and spectral resolution of spherically-bent quartz, mica, germanium, and pyrolytic graphite crystals  

Science Journals Connector (OSTI)

Abstract The relative x-ray collection efficiency, spatial resolution, and spectral resolution of spherically-bent quartz, mica, and germanium crystals were compared with cylindrically and spherically-bent highly oriented pyrolytic graphite (HOPG) and spherically-bent highly annealed pyrolytic graphite (HAPG) mosaic crystals. The crystals were characterized using Mn-K-?1 (5898.8 eV) and Mn-K-?2 (5887.6 eV) x-rays generated from a Manson x-ray source. The HOPG and HAPG crystals had about (10–100)× higher x-ray collection efficiency than the quartz, mica, and germanium crystals. However, good spatial resolutions were obtained with the quartz (49 ?m), mica (61 ?m), and germanium (275 ?m) crystals, while the HOPG and HAPG crystals provided no useful spatial resolving power. Deconvolution of the spectral broadening due to the Mn-K-?1 intrinsic width (2.33 eV), source size (320 ?m), and image plate detector resolution (63 ?m) demonstrated the spectral resolutions (E/?E) of the quartz (3800–6600), mica (4600), and germanium (3400–4500) crystals to be considerably higher than that of the HOPG (1200–2400) and HAPG (2500) crystals.

T. Ao; E.C. Harding; J.E. Bailey; G. Loisel; S. Patel; D.B. Sinars; L.P. Mix; D.F. Wenger

2014-01-01T23:59:59.000Z

36

PVWATTS Version 2 - Enhanced Spatial Resolution for Calculating Grid-Connected PV Performance: Preprint  

NLE Websites -- All DOE Office Websites (Extended Search)

PVWATTS Version 2 - PVWATTS Version 2 - Enhanced Spatial Resolution for Calculating Grid-Connected PV Performance Preprint October 2001 * NREL/CP-560-30941 B. Marion, M. Anderberg, R. George, P. Gray-Hann, and D. Heimiller To be presented at the NCPV Program Review Meeting Lakewood, Colorado 14-17 October 2001 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute * * * * Battelle * * * * Bechtel Contract No. DE-AC36-99-GO10337 NOTICE The submitted manuscript has been offered by an employee of the Midwest Research Institute (MRI), a contractor of the US Government under Contract No. DE-AC36-99GO10337. Accordingly, the US Government and MRI retain a nonexclusive royalty-free license to publish or reproduce the published

37

CONDENSATION IN SUPERNOVA EJECTA AT HIGH SPATIAL RESOLUTION. A. V. Fedkin1 , L. Grossman1,3  

E-Print Network (OSTI)

CONDENSATION IN SUPERNOVA EJECTA AT HIGH SPATIAL RESOLUTION. A. V. Fedkin1 , B. S. Meyer2 , L expand and cool, and condensation occurs as the total pressure (Pt ) falls with temperature (T). Observa to radioac- tive decay during condensation. Thermodynamic cal- culations have been used to predict

Grossman, Lawrence

38

Accounting for spatially variable resolution in electrical resistivity tomography through field-scale rock-physics relations  

E-Print Network (OSTI)

Accounting for spatially variable resolution in electrical resistivity tomography through field of the voltages measured in an electrical resistivity tomography ERT survey produces maps of electrical resistivity, which can be used to infer changes in electrical properties, such as those caused

Singha, Kamini

39

Probe diagnostics of electron distributions in plasma with spatial and angular resolution  

SciTech Connect

This paper discusses the spatial resolution that is required to study inhomogeneous, low-temperature plasmas and is based on a review of low-temperature plasma electron kinetics and methods for probe measurements of electron energy distribution functions (EEDFs). It is stated that EEDFs can be extracted from probe measurements by applying an appropriate probe theory. The Druyvesteyn formula is most commonly used for this extraction and has been used in numerous publications, but more general theory can be used for a wider range of gas pressures. It is demonstrated that the Druyvesteyn formula can be obtained from the general theory as a limiting case. This paper justifies the application of wall probes in plasma studies of an energetic part of EEDFs. This justification is made for an idealized probe. We briefly review the methods for studying anisotropic plasmas and their usefulness in plasma research. It is demonstrated that to determine anisotropic electron energy distribution functions, a planar, one-sided probe is most convenient.

Demidov, V. I.; Kudryavtsev, A. A. [St. Petersburg State University, St. Petersburg 199034, Russia and ITMO University, Kronverkskiy pr. 49, St. Petersburg 197101 (Russian Federation)

2014-09-15T23:59:59.000Z

40

Raman-assisted DPP-BOTDA sensor employing Simplex coding with sub-meter scale spatial resolution over 93 km standard SMF  

E-Print Network (OSTI)

Raman-assisted DPP-BOTDA sensor employing Simplex coding with sub-meter scale spatial resolution technique is combined with bi-directional Raman amplification and Simplex coding to achieve sub-meter successfully employed to attain sub-meter spatial resolution [1-3], although typically exhibiting limited

Thévenaz, Jacques

Note: This page contains sample records for the topic "finer spatial resolution" 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

Spatial resolution and noise in organic light-emitting diode displays for medical imaging applications  

Science Journals Connector (OSTI)

We report on the resolution and noise characteristics of handheld and workstation organic light-emitting diode (OLED) displays in comparison with liquid crystal displays (LCDs). The...

Yamazaki, Asumi; Wu, Chih-Lei; Cheng, Wei-Chung; Badano, Aldo

2013-01-01T23:59:59.000Z

42

Simultaneous High-Resolution 2-Dimensional Spatial and 1-Dimensional Picosecond Streaked X-ray Pinhole Imaging  

SciTech Connect

A Kentech x-ray streak camera was run at the LLNL Compact Multipulse Terawatt (COMET) laser to record simultaneous space- and time-resolved measurements of picosecond laser-produced plasmas. Four different x-ray energy channels were monitored using broad-band filters to record the time history of Cu targets heated at irradiances of 10{sup 16} - 10{sup 19} W/cm{sup 2}. Through the Cu filter channel, a time-resolution below 3ps was obtained. Additionally, an array of 10 {micro}m diameter pinholes was placed in front of the camera to produce multiple time-resolved x-ray images on the photocathode and time-integrated images on the phosphor with 10 and 15 times magnification, respectively, with spatial resolution of <13 {micro}m.

Steel, A B; Nagel, S R; Dunn, J; Baldis, H A

2012-05-03T23:59:59.000Z

43

Tagged Neutron Source for API Inspection Systems with Greatly Enhanced Spatial Resolution  

SciTech Connect

We recently developed induced fission and transmission imaging methods with time- and directionally-tagged neutrons offer new capabilities for characterization of fissile material configurations and enhanced detection of special nuclear materials (SNM). An Advanced Associated Particle Imaging (API) generator with higher angular resolution and neutron yield than existing systems is needed to fully exploit these methods.

None

2012-06-04T23:59:59.000Z

44

A first global and spatially explicit emergy database of rivers and streams based on high-resolution GIS-maps  

Science Journals Connector (OSTI)

Abstract In emergy evaluation (EME), water is often identified as the main renewable resource input of a natural or human system. Water flows in EME have been generally examined with a global perspective, i.e. without considering topographical and climatic differences at regional or local scales. Hence, spatial differentiation in water flows characterization is essential to improve the quality of EME results. This paper introduces the first global, spatially explicit emergy dataset of freshwater flows, developed following the rationale found in prior \\{EMEs\\} of rivers. The unit emergy value (UEV) of a stream was calculated as the highest value between rain chemical potential emergy and rain geopotential emergy over the stream's catchment area, divided by the stream flow rate. This approach was applied with a high resolution and a global coverage, using Geographic Information System (GIS) software and, notably, world maps of precipitation, evapotranspiration and elevation, to estimate accumulation patterns of rainfall emergy value and flow rates. Preliminary results are compared with available data on river's \\{UEVs\\} retrieved from previous studies and with the actual stream flow of major rivers in the world and in France. While flow rates modeled in the database show important differences as compared to actual data, the comparison of the modeled emergy value of rivers with prior studies was made difficult by the heterogeneity in calculation details observed previously. Therefore, it is highly recommended for the emergy community to foster the use and improvement of such high-resolution, spatially explicit dataset instead of using regional or global UEV averages, which should only be used when reliable local values are not available. Hence, territorial averages were computed in order to characterize background processes in the hybrid lifecycle-emergy accounting framework, as this approach can complement and enrich the conventional EME with the inclusion of detailed information on supply chain processes. To this aim, data were aggregated over major watersheds and administrative regions, and weighted with a proxy for urban surface water consumption. The next steps identified to enhance our prospective work include: (1) the characterization of water reservoirs (glaciers, lakes, groundwater, soil moisture), (2) the improvement of runoff modeling and stream flows, (3) the spatial assessment of atmospheric processes to refine transformities of rain (chemical potential and geopotential), and (4) the inclusion of additional elements such as sediments, minerals and particulate matter as a flow of emergy in rivers.

Damien Arbault; Benedetto Rugani; Ligia Tiruta-Barna; Enrico Benetto

2014-01-01T23:59:59.000Z

45

Relativistic electron flux comparisons at low and high altitudes with fast time resolution and broad spatial coverage  

SciTech Connect

Analyses are presented for the first high-time resolution multisatellite study of the spatial and temporal characteristics of a relativistic electron enhancement event with a rapid onset. Measurements of MeV electrons were made from two low-altitude polar orbiting satellites and three spacecraft at synchronous altitude. The electron fluxes observed by the low-altitude satellites include precipitating electrons in both the bounce and drift loss cones as well as electrons that are stably trapped, whereas the observations at geosynchronous altitude are dominated by the trapped population. The fluxes of >1 MeV electrons at low-satellite altitude over a wide range of L shells tracked very well the fluxes >0.93 MeV at synchronous altitude. 10 refs., 5 figs., 1 tab.

Imhof, W.L.; Gaines, E.E.; McGlennon, J.P. [Lockheed Palo Alto Research Lab., CA (United States)] [and others] [Lockheed Palo Alto Research Lab., CA (United States); and others

1994-09-01T23:59:59.000Z

46

Taheri-Saramad x-ray detector (TSXD): A novel high spatial resolution x-ray imager based on ZnO nano scintillator wires in polycarbonate membrane  

SciTech Connect

A novel x-ray imager based on ZnO nanowires is designed and fabricated. The proposed architecture is based on scintillation properties of ZnO nanostructures in a polycarbonate track-etched membrane. Because of higher refractive index of ZnO nanowire compared to the membrane, the nanowire acts as an optical fiber that prevents the generated optical photons to spread inside the detector. This effect improves the spatial resolution of the imager. The detection quantum efficiency and spatial resolution of the fabricated imager are 11% and <6.8 ?m, respectively.

Taheri, A., E-mail: at1361@aut.ac.ir; Saramad, S.; Ghalenoei, S.; Setayeshi, S. [Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran 15875-4413 (Iran, Islamic Republic of)] [Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran 15875-4413 (Iran, Islamic Republic of)

2014-01-15T23:59:59.000Z

47

Investigation of the spatial resolution of an online dose verification device  

SciTech Connect

Purpose: The aim of this work is to characterize a new online dose verification device, COMPASS transmission detector array (IBA Dosimetry, Schwarzenbruck, Germany). The array is composed of 1600 cylindrical ionization chambers of 3.8 mm diameter, separated by 6.5 mm center-to-center spacing, in a 40 x 40 arrangement. Methods: The line spread function (LSF) of a single ion chamber in the detector was measured with a narrow slit collimator for a 6 MV photon beam. The 0.25 x 10 mm{sup 2} slit was formed by two machined lead blocks. The LSF was obtained by laterally translating the detector in 0.25 mm steps underneath the slit over a range of 24 mm and taking a measurement at each step. This measurement was validated with Monte Carlo simulation using BEAMnrc and DOSXYZnrc. The presampling modulation transfer function (MTF), the Fourier transform of the line spread function, was determined and compared to calculated (Monte Carlo and analytical) MTFs. Two head-and-neck intensity modulated radiation therapy (IMRT) fields were measured using the device and were used to validate the LSF measurement. These fields were simulated with the BEAMnrc Monte Carlo model, and the Monte Carlo generated incident fluence was convolved with the 2D detector response function (derived from the measured LSF) to obtain calculated dose. The measured and calculated dose distributions were then quantitatively compared using {chi}-comparison criteria of 3% dose difference and 3 mm distance-to-agreement for in-field points (defined as those above the 10% maximum dose threshold). Results: The full width at half-maximum (FWHM) of the measured detector response for a single chamber is 4.3 mm, which is comparable to the chamber diameter of 3.8 mm. The pre-sampling MTF was calculated, and the resolution of one chamber was estimated as 0.25 lp/mm from the first zero crossing. For both examined IMRT fields, the {chi}-comparison between measured and calculated data show good agreement with 95.1% and 96.3% of in-field points below {chi} of 1.0 for fields 1 and 2, respectively (with an average {chi} of 0.29 for IMRT field 1 and 0.24 for IMRT field 2). Conclusions: The LSF for a new novel online detector has been measured at 6 MV using a narrow slit technique, and this measurement has been validated by Monte Carlo simulation. The detector response function derived from line spread function has been applied to recover measured IMRT fields. The results have shown that the device measures IMRT fields accurately within acceptable tolerance.

Asuni, G.; Rickey, D. W.; McCurdy, B. M. C. [Division of Medical Physics, CancerCare Manitoba, 675 McDermot Avenue, Winnipeg, Manitoba R3E 0V9 (Canada) and Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada); Division of Medical Physics, CancerCare Manitoba, 675 McDermot Avenue, Winnipeg, Manitoba R3E 0V9 (Canada); Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada) and Department of Radiology, University of Manitoba, Winnipeg, Manitoba R3A 1R9 (Canada)

2012-02-15T23:59:59.000Z

48

Richardson et al. (2006) Socioeconomics in marine reserve design Conservation Biology in press Sensitivity of marine-reserve design to the spatial resolution  

E-Print Network (OSTI)

considered. We therefore designed marine reserves for biodiversity conservation with the constraintRichardson et al. (2006) Socioeconomics in marine reserve design Conservation Biology in press 1 Sensitivity of marine-reserve design to the spatial resolution of socioeconomic data Elizabeth A. Richardson

Queensland, University of

49

Subpixel monitoring of the seasonal snow cover with MODIS at 250 m spatial resolution in the Southern Alps of New Zealand: Methodology and accuracy assessment  

Science Journals Connector (OSTI)

This study describes a comprehensive method to produce routinely regional maps of seasonal snow cover in the Southern Alps of New Zealand (upper Waitaki basin) on a subpixel basis, and with the \\{MODerate\\} Resolution Imaging Spectroradiometer (MODIS). The method uses an image fusion algorithm to produce snow maps at an improved 250 m spatial resolution in addition to the 500 m resolution snow maps. An iterative approach is used to correct imagery for both atmospheric and topographic effects using daily observations of atmospheric parameters. The computation of ground spectral reflectance enabled the use of image-independent end-members in a constrained linear unmixing technique to achieve a robust estimation of subpixel snow fractions. The accuracy of the snow maps and performance of the algorithm were assessed carefully using eight pairs of synchronic MODIS/ASTER images. ‘Pixel-based’ metrics showed that subpixel snow fractions were retrieved with a Mean Absolute Error of 6.8% at 250 m spatial resolution and 5.1% after aggregation at 500 m spatial resolution. In addition, a ‘feature-based’ metric showed that 90% of the snowlines were depicted generally within 300 m and 200 m of their correct position for the 500-m and 250-m spatial resolution snow maps, respectively. A dataset of 679 maps of subpixel snow fraction was produced for the period from February 2000 to May 2007. These repeated observations of the seasonal snow cover will benefit the ongoing effort to model snowmelt runoff in the region and to improve the estimation and management of water resources.

Pascal Sirguey; Renaud Mathieu; Yves Arnaud

2009-01-01T23:59:59.000Z

50

High-resolution measurements of the spatial and temporal evolution of megagauss magnetic fields created in intense short-pulse laser-plasma interactions  

SciTech Connect

A pump-probe polarimetric technique is demonstrated, which provides a complete, temporally and spatially resolved mapping of the megagauss magnetic fields generated in intense short-pulse laser-plasma interactions. A normally incident time-delayed probe pulse reflected from its critical surface undergoes a change in its ellipticity according to the magneto-optic Cotton-Mouton effect due to the azimuthal nature of the ambient self-generated megagauss magnetic fields. The temporal resolution of the magnetic field mapping is typically of the order of the pulsewidth, limited by the laser intensity contrast, whereas a spatial resolution of a few ?m is achieved by this optical technique. High-harmonics of the probe can be employed to penetrate deeper into the plasma to even near-solid densities. The spatial and temporal evolution of the megagauss magnetic fields at the target front as well as at the target rear are presented. The ?m-scale resolution of the magnetic field mapping provides valuable information on the filamentary instabilities at the target front, whereas probing the target rear mirrors the highly complex fast electron transport in intense laser-plasma interactions.

Chatterjee, Gourab, E-mail: gourab@tifr.res.in; Singh, Prashant Kumar; Adak, Amitava; Lad, Amit D.; Kumar, G. Ravindra, E-mail: grk@tifr.res.in [Tata Institute of Fundamental Research, 1 Homi Bhabha Road, Mumbai 400 005 (India)

2014-01-15T23:59:59.000Z

51

Impacts of elevation data spatial resolution on two-dimensional dam break flood simulation and consequence assessment  

SciTech Connect

A grid resolution sensitivity analysis using a two-dimensional flood inundation model has been presented in this paper. Simulations for 6 dam breaches located randomly in the United States were run at 10,30,60,90, and 120 meter resolutions. The dams represent a range of topographic conditions, ranging from 0% slope to 1.5% downstream of the dam. Using 10 meter digital elevation model (DEM) simulation results as the baseline, the coarser simulation results were compared in terms of flood inundation area, peak depths, flood wave travel time, daytime and nighttime population in flooded area, and economic impacts. The results of the study were consistent with previous grid resolution studies in terms of inundated area, depths, and velocity impacts. The results showed that as grid resolution is decreased, the relative fit of inundated area between the baseline and coarser resolution decreased slightly. This is further characterized by increasing over prediction as well as increasing under prediction with decreasing resolution. Comparison of average peak depths showed that depths generally decreased as resolution decreased, as well as the velocity. It is, however, noted that the trends in depth and velocity showed less consistency than the inundation area metrics. This may indicate that for studies in which velocity and depths must be resolved more accurately (urban environments when flow around buildings is important in the calculation of drag effects), higher resolution DEM data should be used. Perhaps the most significant finding from this study is the perceived insensitivity of socio-economic impacts to grid resolution. The difference in population at risk (PAR) and economic cost generally remained within 10% of the estimated impacts using the high resolution DEM. This insensitivity has been attributed to over estimated flood area and associated socio-economic impacts compensating for under estimated flooded area and associated socio-economic impacts. The United States has many dams that are classified as high-hazard potential that need an emergency action plan (EAP). It has been found that the development of EAPs for all high-hazard dams is handicapped due to funding limitations. The majority of the cost associated with developing an EAP is determining the flooded area. The results of this study have shown that coarse resolution dam breach studies can be used to provide an acceptable estimate of the inundated area and economic impacts, with very little computational cost. Therefore, the solution to limited funding may be to perform coarse resolution dam breach studies on high-hazard potential dams and use the results to help prioritize the order in which detailed EAPs should be developed.

Judi, David R [Los Alamos National Laboratory; Mcpherson, Timothy N [Los Alamos National Laboratory; Burian, Steven J [UNIV OF UTAH

2009-01-01T23:59:59.000Z

52

Toward resolution-independent dust emissions in global models: Impacts on the seasonal and spatial distribution of dust  

E-Print Network (OSTI)

Simulating the emission of mineral dust and sea-salt aerosol is nonlinear with surface winds and therefore requires accurate representation of surface winds. Consequently, the resolution of a simulation affects emission ...

Pierce, J. R.

53

Wald L., Ranchin T., Lefvre M., Albuisson M., Remund J., 2003, Increasing the spatial resolution of gridded data by fusion with other data sets. In Proceedings of the 6th International Conference on Information Fusion, Cairns, Australia, 8-11 July 2003, p  

E-Print Network (OSTI)

is proposed for increasing the spatial resolution of gridded data with a special emphasis in climatology. Given a set of gridded data at low spatial resolution, and assuming the existence of other data sets the spatial resolution of the data since no additional knowledge is brought. Taking advantage

Paris-Sud XI, Université de

54

Plant Cell Reports (1999) 19:612 Q Springer-Verlag 1999 T. Ponappa 7 A.E. Brzozowski 7 J.J. Finer  

E-Print Network (OSTI)

by J.M. Widholm T. Ponappa 7 A.E. Brzozowski 7 J.J. Finer (Y) Department of Horticulture and Crop. All of the constructions produced green fluorescence in soybean cultures upon blue light excita- tion is a 238-amino-acid protein that produces green fluo- rescence upon excitation by UV or blue light (Cubitt

Finer, John J.

55

Generation of baroclinic tide energy in a global three-dimensional numerical model with different spatial grid resolutions  

Science Journals Connector (OSTI)

Abstract We examine the global distribution of energy conversion rates from barotropic to baroclinic tides using a hydrostatic sigma-coordinate numerical model with a special attention to the dependence on the model grid resolution as well as the model topography resolution. A series of numerical experiments shows that the baroclinic tidal energy conversion rate increases almost exponentially with the decrease of the horizontal grid spacing, namely, from 1/5° to 1/20°. The baroclinic tidal energy conversion rates for the semidiurnal tidal constituents (M2, S2) are more sensitive to the horizontal grid spacing than those for the diurnal tidal constituents (K1, O1), reflecting the difference of their horizontal wavelengths. The sensitivity of the baroclinic tidal energy conversion rate to the horizontal grid spacing is also dependent on the generation sites of baroclinic tides; it becomes very sensitive in the regions characterized by geologically young seafloor having numerous small-scale rough topographic features such as the Mid-Atlantic Ridges, the eastern Pacific Ridges, and the Mid-Indian Ocean Ridges, whereas it is less sensitive in the regions such as the Indonesian Archipelago, and the western Pacific Ocean. The difference of the sensitivity can be best explained in terms of the value of the forcing function that is proportional to the square of the vertical velocity caused by barotropic tidal currents interacting with high-pass filtered bottom topography. Using the extrapolated value of the forcing function that takes into account all the topographic features generating baroclinic tides, we present the global distribution of the baroclinic tidal energy conversion rates in the limit of zero horizontal grid spacing.

Yoshihiro Niwa; Toshiyuki Hibiya

2014-01-01T23:59:59.000Z

56

Photodiode-Based X-Ray Beam-Position Monitor With High Spatial-Resolution for the NSLS-II Beamlines  

SciTech Connect

We developed a photodiode-based monochromatic X-ray beam-position monitor (X-BPM) with high spatial resolution for the project beamlines of the NSLS-II. A ring array of 32 Si PIN-junction photodiodes were designed for use as a position sensor, and a low-noise HERMES4 ASIC chip was integrated into the electronic readout system. A series of precision measurements to characterize electrically the Si-photodiode sensor and the ASIC chip demonstrated that the inherent noise is sufficiently below tolerance levels. Following up modeling of detector's performance, including geometrical optimization using a Gaussian beam, we fabricated and assembled a first prototype. In this paper, we describe the development of this new state-of-the-art X-ray BPM along the beamline, in particular, downstream from the monochromator.

Yoon, P.S.; Siddons, D. P.

2009-05-25T23:59:59.000Z

57

Ultra-scale vehicle tracking in low spatial-resolution and low frame-rate overhead video  

SciTech Connect

Overhead persistent surveillance systems are becoming more capable at acquiring wide-field image sequences for long time-spans. The need to exploit this data is becoming ever greater. The ability to track a single vehicle of interest or to track all the observable vehicles, which may number in the thousands, over large, cluttered regions while they persist in the imagery either in real-time or quickly on-demand is very desirable. With this ability we can begin to answer a number of interesting questions such as, what are normal traffic patterns in a particular region or where did that truck come from? There are many challenges associated with processing this type of data, some of which we will address in the paper. Wide-field image sequences are very large with many thousands of pixels on a side and are characterized by lower resolutions (e.g. worse than 0.5 meters/pixel) and lower frame rates (e.g. a few Hz or less). The objects in the scenery can vary in size, density, and contrast with respect to the background. At the same time the background scenery provides a number of clutter sources both man-made and natural. We describe our current implementation of an ultrascale capable multiple-vehicle tracking algorithm for overhead persistent surveillance imagery as well as discuss the tracking and timing performance of the currently implemented algorithm which is aimed at utilizing grayscale electrooptical image sequences alone for the track segment generation.

Carrano, C J

2009-05-20T23:59:59.000Z

58

Fluorescence-type Monochromatic X-ray Beam-position Monitor with High-spatial Resolution for the NSLS-II Beamlines  

SciTech Connect

We developed a fluorescence-type monochromatic X-ray beam-position monitor (X-BPM) with high-spatial resolution for end-station experiments at the initial project beamlines of the NSLS-II. We designed a ring array of multi-segmented Si PIN-junction photodiodes to use as a position sensor. Further, we integrated a low-noise charge-preamplification HERMES4 ASIC chip into an electronic readout system for photon-counting application. A series of precision measurements to characterize electronically the Si-photodiode sensor and the ASIC chip demonstrated that the inherent noise from the detector system is sufficiently low to meet our stringent requirements. Using a Gaussian beam, we parametrically modeled the optimum working distance to ensure the detector's best performance. Based upon the results from the parametric modeling, prototypes of the next versions of the X-BPM are being developed. In this paper, we describe the methodology for developing the new compact monochromatic X-ray BPM, including its instrumentation, detector modeling, and future plan.

Yoon, Phil S. [Experimental Facility Division, NSLS-II, Brookhaven National Laboratory, Upton, NY 11973 (United States); Siddons, D. Peter [Experimental Systems, NSLS, Brookhaven National Laboratory, Upton, NY 11973 (United States)

2010-06-23T23:59:59.000Z

59

High spatial resolution particle detectors  

DOE Patents (OSTI)

Disclosed below are representative embodiments of methods, apparatus, and systems for detecting particles, such as radiation or charged particles. One exemplary embodiment disclosed herein is particle detector comprising an optical fiber with a first end and second end opposite the first end. The optical fiber of this embodiment further comprises a doped region at the first end and a non-doped region adjacent to the doped region. The doped region of the optical fiber is configured to scintillate upon interaction with a target particle, thereby generating one or more photons that propagate through the optical fiber and to the second end. Embodiments of the disclosed technology can be used in a variety of applications, including associated particle imaging and cold neutron scattering.

Boatner, Lynn A.; Mihalczo, John T.

2012-09-04T23:59:59.000Z

60

Estimation of reactogenicity of preparations produced on the basis of photoinactivated live vaccines against brucellosis and tularaemia on the organismic level. 2. Using the method of speckle-microscopy with high spatial resolution  

SciTech Connect

The method of speckle microscopy was adapted to estimate the reactogenicity of the prototypes of vaccine preparations against extremely dangerous infections. The theory is proposed to describe the mechanism of formation of the output signal from the super-high spatial resolution speckle microscope. The experimental studies show that bacterial suspensions, irradiated in different regimes of inactivation, do not exert negative influence on the blood microcirculations in laboratory animals. (optical technologies in biophysics and medicine)

Ulianova, O V; Uianov, S S; Li Pengcheng; Luo Qingming

2011-04-30T23:59:59.000Z

Note: This page contains sample records for the topic "finer spatial resolution" 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

Spatiality of the patch frame Martin H. Escardo  

E-Print Network (OSTI)

Spatiality of the patch frame Mart´in H. Escard´o School of Mathematical and Computational Sciences is referred to as the patch frame. In this short note we show that the patch of a topology is isomorphic to a finer topology on the same set. We also give a point-set construction of the patch topology of a sober

Escardó, Martín

62

Super-Resolution Optical Imaging of Biomass Chemical-Spatial Structure: Cooperative Research and Development Final Report, CRADA Number CRD-10-410  

SciTech Connect

The overall objective for this project is to characterize and develop new methods to visualize the chemical spatial structure of biomass at varying stages of the biomass degradation processes in situ during the process.

Ding, S. Y.

2013-06-01T23:59:59.000Z

63

Large Area and High Efficiency Photon Counting Imaging Detectors with High Time and Spatial Resolution for Night Time Sensing and Astronomy  

E-Print Network (OSTI)

and background rates of ~50 kHz at 8° C. The sensor system including our processing electronics achieves spatial National Laboratory, Chicago Il Gary Varner University of Hawaii ABSTRACT Imaging sensors using Ga, low background rates (0.1 events cm-2 sec-1 ), and very good lifetime stability to 7 C cm-2 of charge

Michalet, Xavier

64

Atomic Resolution Coordination Mapping in Ca2FeCoO5 Brownmillerite by Spatially Resolved Electron Energy-Loss Spectroscopy  

Science Journals Connector (OSTI)

Using a combination of high-angle annular dark field scanning transmission electron microscopy and atomically resolved electron energy-loss spectroscopy at high energy resolution in an aberration-corrected electron microscope, we demonstrate the capability of coordination mapping in complex oxides. ... (b) Survey image indicating the area used for octahedral (red) and tetrahedral (blue) data summation (3 pixel width). ... B atoms that have energetic preference for tetrahedral coordination geometry are esp. ...

Stuart Turner; Johan Verbeeck; Farshid Ramezanipour; John E. Greedan; Gustaaf Van Tendeloo; Gianluigi A. Botton

2012-04-25T23:59:59.000Z

65

Developing clear-sky, cloud and cloud shadow mask for producing clear-sky composites at 250-meter spatial resolution for the seven MODIS land bands over Canada and North America  

Science Journals Connector (OSTI)

A new technology was developed at the Canada Centre for Remote Sensing (CCRS) for generating Canada-wide and North America continental scale clear-sky composites at 250 m spatial resolution for all seven MODIS land spectral bands (B1–B7). The MODIS Level 1B (MOD02) swath level data are used as input to circumvent the problems with image distortion in the mid latitude and polar regions inherent to the global sinusoidal (SIN) projection utilized for the standard MODIS data products. The MODIS 500 m land bands B3 to B7 are first downscaled to 250 m resolution using an adaptive regression and normalization scheme for compatibility with the 250 m bands B1 and B2. A new method has been developed to produce the mask of clear-sky, cloud and cloud shadow at 250 m resolution. It shows substantial advantages in comparison with the MODIS 250 m standard cloud masks. The testing of new cloud mask showed that it is in reasonable agreement with the MODIS 1-km standard product once it is aggregated to 1-km scale, while the cloud shadow detection looks more reliable with the new methodology. Nevertheless, more quantitative analyses of the presented scene identification technique are required to understand its performance over the range of input scenes in various seasons. The new clear-sky compositing scheme employs a scene-dependent decision matrix. It is demonstrated that this new scheme provides better results than any others based on a single compositing criterion, such as maximum NDVI or minimum visible reflectance. To account for surface bi-directional properties, two clear-sky composites for the same time period are produced by separating backward scattering and forward scattering geometries, which separate pixels with the sun-satellite relative azimuth angles within 90°–270° and outside of this range. Comparison with Landsat imagery and with MODIS standard composite products demonstrated the advantage of the new technique for screening cloud and cloud shadow, and generating high spatial resolution MODIS clear-sky composites. The new data products are mapped in the Lambert Conformal Conic (LCC) projection for Canada and the Lambert Azimuthal Equal-Area (LAEA) projection for North America. Presently this activity is limited to MODIS/TERRA due to known problems with band-to-band registration and noisy SWIR channels on MODIS/AQUA.

Yi Luo; Alexander P. Trishchenko; Konstantin V. Khlopenkov

2008-01-01T23:59:59.000Z

66

Ultrafast supercontinuum fiber-laser based pump-probe scanning magneto-optical Kerr effect microscope for the investigation of electron spin dynamics in semiconductors at cryogenic temperatures with picosecond time and micrometer spatial resolution  

SciTech Connect

We describe a two-color pump-probe scanning magneto-optical Kerr effect microscope which we have developed to investigate electron spin phenomena in semiconductors at cryogenic temperatures with picosecond time and micrometer spatial resolution. The key innovation of our microscope is the usage of an ultrafast “white light” supercontinuum fiber-laser source which provides access to the whole visible and near-infrared spectral range. Our Kerr microscope allows for the independent selection of the excitation and detection energy while avoiding the necessity to synchronize the pulse trains of two separate picosecond laser systems. The ability to independently tune the pump and probe wavelength enables the investigation of the influence of excitation energy on the optically induced electron spin dynamics in semiconductors. We demonstrate picosecond real-space imaging of the diffusive expansion of optically excited electron spin packets in a (110) GaAs quantum well sample to illustrate the capabilities of the instrument.

Henn, T.; Kiessling, T., E-mail: tobias.kiessling@physik.uni-wuerzburg.de; Ossau, W.; Molenkamp, L. W. [Physikalisches Institut (EP3), Universität Würzburg, 97074 Würzburg (Germany)] [Physikalisches Institut (EP3), Universität Würzburg, 97074 Würzburg (Germany); Biermann, K.; Santos, P. V. [Paul-Drude-Institut für Festkörperelektronik, 10117 Berlin (Germany)] [Paul-Drude-Institut für Festkörperelektronik, 10117 Berlin (Germany)

2013-12-15T23:59:59.000Z

67

Dynamic high-speed spatial manipulation of cold atoms using acousto-optic and spatial light modulation  

Science Journals Connector (OSTI)

We demonstrate an experimental technique for high-resolution, high-speed spatial manipulation of atom clouds. By combining holographically engineered laser beams from a spatial light...

Fatemi, F K; Bashkansky, M; Dutton, Z

2007-01-01T23:59:59.000Z

68

Development and assessment of a 250 m spatial resolution MODIS annual land cover time series (2000–2011) for the forest region of Canada derived from change-based updating  

Science Journals Connector (OSTI)

Abstract Detailed information on the spatial and temporal distribution of land cover is required to evaluate the effects of land cover change on environmental processes. The development of temporally consistent land cover time series (LCTS) from satellite-based earth observation has proven difficult because multi-year observations are acquired under different conditions resulting in high inter-annual reflectance variability. This leads to spurious differences in land cover when standard approaches for image classification are applied to generate multi-year land cover data. To reduce this effect, a common solution has been to first detect change and update a base map for only these change areas. As long as the change commission error is low, this approach will ensure high consistency between maps in the time series. Here we present an approach for change-based LCTS development following from previous research, but with significant advancements in change detection, training, classification, and evidence-based refinement. The method was applied to generate an annual LCTS covering Canada spanning 2000–2011 that is consistent between years and can be used to identify dominant change transitions. Assessment of the LCTS was challenging because multiple maps needed to be evaluated and can be prohibitive particularly for annual time series covering several years. Three approaches were undertaken involving visual examination, comparison with a reference sample derived from Landsat, and comparison with the MODIS Global LCTS V5.1. Visual assessment revealed high inter-map consistency and logical temporal change trajectories of land cover classes. Comparison with the reference sample showed an accuracy of 70% at the 19 class thematic resolution. Accounting for mixed pixels by considering the first or second reference land cover label as correct increased the accuracy to 80%. Comparison with the MODIS Global LCTS showed that the Canada LCTS achieved higher inter-map consistency and accuracy as expected with national relative to global land cover products.

Darren Pouliot; Rasim Latifovic; Natalie Zabcic; Luc Guindon; Ian Olthof

2014-01-01T23:59:59.000Z

69

Hyperspectral Data Classification Using Spectral-Spatial Approaches  

E-Print Network (OSTI)

Hyperspectral Data Classification Using Spectral-Spatial Approaches Yuliya Tarabalka1 , Jón Atli classification problem AVIRIS image Spatial resolution: 20m/pix Spectral resolution: 200 bands Ground-truth data.tarabalka@nasa.gov) Spectral-Spatial Classification of Hyperspectral Data 6 #12;Introduction Classification using segmentation

Dobigeon, Nicolas

70

Testing Competing High-Resolution Precipitation Forecasts  

E-Print Network (OSTI)

Testing Competing High-Resolution Precipitation Forecasts Eric Gilleland Research Prediction Comparison Test D1 D2 D = D1 ­ D2 copyright NCAR 2013 Loss Differential Field #12;Spatial Prediction Comparison Test Introduced by Hering and Genton

Gilleland, Eric

71

SPATIAL TRANSFORMATIONS 1 Running head: Spatial transformations  

E-Print Network (OSTI)

SPATIAL TRANSFORMATIONS 1 Running head: Spatial transformations Multiple Systems for Spatial Imagery: Transformations of Objects and Bodies Jeffrey M. Zacks* and Barbara Tversky * Washington COGNITION & COMPUTATION #12;SPATIAL TRANSFORMATIONS 2 Abstract Problem-solving often requires imagining

Zacks, Jeffrey M.

72

Improving methods for reporting spatial epidemiologic data  

E-Print Network (OSTI)

LETTERS Improving Methods for Reporting Spatial Epidemiologic Data To the Editor: A recent perspec- tive in this journal (1) pointed out problems with the present, county- referenced system for reporting spatial epidemiologic data. Problems... identi- fi ed included coarse spatial resolution of county-referenced data and differ- ences across the United States in size of counties, making data for the west- ern part of the country coarser in reso- lution than data for the eastern part. Eisen...

Peterson, A. Townsend

2008-08-01T23:59:59.000Z

73

A Clustering-Assisted Regression (CAR) approach for developing spatial climate data sets in China  

E-Print Network (OSTI)

A Clustering-Assisted Regression (CAR) approach for developing spatial climate data sets in China t There is an increasing demand for improving spatial resolution of climate data. However, an increase in resolution does spatial data of monthly mean temperature and monthly precipitation at a national scale in mainland China

Pittendrigh, Barry

74

Greenhouse Gas Laser Imaging Tomography Experiment (GreenLITE): Evaluation of a new method to look at high resolution spatial/temporal distributions of carbon over key sub km sites  

SciTech Connect

Recently a new laser based approach for measuring area with potential for producing 2D estimates of the concentration spatial distribution has been developed through a cooperative agreement with the National Energy and Technology Laboratory of the Department of Energy, Exelis Inc. and AER Inc. The new approach is based on a pair of continuous wave intensity modulated laser absorption spectrometer transceivers, combined with a series of retro reflectors located around the perimeter of the area being monitored. The main goal of this cooperative agreement is monitoring, reporting and verification for ground carbon capture and storage projects. The system was recently tested at the Zero Emission Research and Technology site in Bozeman, MT, with underground leak rates ranging from 0.1 – 0.3 metric ton per day (T/d), as well as a 0.8 T/d surface release. Over 200 hours of data were collected over a rectangular grid 180m x 200m between August 18th and September 9th. In addition, multiple days of in situ data were acquired for the same site, using a Licor gas analyzer systems. Initial comparisons between the laser-based system and the in situ agree very well. The system is designed to operate remotely and transmit the data via a 3G/4G connection along with weather data for the site. An all web-based system ingests the data, populates a database, performs the inversion to ppm CO2 using the Line-by-Line Radiative Transfer Model (LBLRTM), and displays plots and statistics for the retrieved data. We will present an overview of the GreenLITE measurement system, outline the retrieval and reconstruction approach, and discuss results from extensive field testing.

Dobler, Jeremy; Zaccheo, T. Scott; Blume, Nathan; Braun, Michael; Perninit, Timothy; McGregor, Doug; Botos, Chris; Dobeck, Laura

2015-01-01T23:59:59.000Z

75

High-Resolution PET Detector. Final report  

SciTech Connect

The objective of this project was to develop an understanding of the limits of performance for a high resolution PET detector using an approach based on continuous scintillation crystals rather than pixelated crystals. The overall goal was to design a high-resolution detector, which requires both high spatial resolution and high sensitivity for 511 keV gammas. Continuous scintillation detectors (Anger cameras) have been used extensively for both single-photon and PET scanners, however, these instruments were based on NaI(Tl) scintillators using relatively large, individual photo-multipliers. In this project we investigated the potential of this type of detector technology to achieve higher spatial resolution through the use of improved scintillator materials and photo-sensors, and modification of the detector surface to optimize the light response function.We achieved an average spatial resolution of 3-mm for a 25-mm thick, LYSO continuous detector using a maximum likelihood position algorithm and shallow slots cut into the entrance surface.

Karp, Joel

2014-03-26T23:59:59.000Z

76

Defining Electron Backscatter Diffraction Resolution  

SciTech Connect

Automated electron backscatter diffraction (EBSD) mapping systems have existed for more than 10 years [1,2], and due to their versatility in characterizing multiple aspects of microstructure, they have become an important tool in microscale crystallographic studies. Their increasingly widespread use however raises questions about their accuracy in both determining crystallographic orientations, as well as ensuring that the orientation information is spatially correct. The issue of orientation accuracy (as defined by angular resolution) has been addressed previously [3-5]. While the resolution of EBSD systems is typically quoted to be on the order of 1{sup o}, it has been shown that by increasing the pattern quality via acquisition parameter adjustment, the angular resolution can be improved to sub-degree levels. Ultimately, the resolution is dependent on how it is identified. In some cases it can be identified as the orientation relative to a known absolute, in others as the misorientation between nearest neighbor points in a scan. Naturally, the resulting values can be significantly different. Therefore, a consistent and universal definition of resolution that can be applied to characterize any EBSD system is necessary, and is the focus of the current study. In this work, a Phillips (FEI) XL-40 FEGSEM coupled to a TexSEM Laboratories OIM system was used. The pattern capturing hardware consisted of both a 512 by 512 pixel SIT CCD camera and a 1300 by 1030 pixel Peltier cooled CCD camera. Automated scans of various sizes, each consisting of 2500 points, were performed on a commercial-grade single crystal silicon wafer used for angular resolution measurements. To adequately quantify angular resolution for all possible EBSD applications we define two angular values. The first is {omega}{sub center}, the mean of the misorientation angle distribution between all scan points and the scan point coincident to the calibration source (typically the scan center). The {omega}{sub center} value is used to describe the overall system resolution, as it effectively quantifies the deviation of all orientations in the scan relative to the diffraction pattern least affected by distortions. The second is {omega}{sub max}, the largest misorientation angle possible between any pair of points in the dataset, and describes the worst possible case. Fig. 1 shows the effects of scan size and captured pattern resolution (bin size) on both angular values, illustrating that smaller scan and bin sizes have the effect of increasing angular resolution. However, it can be observed that the benefits of utilizing smaller bin sizes (and consequently slower data collection) diminish with scan size. Fig. 2 shows the effect of the number of pixels used in the Hough transform (defined as the ratio of pixels used to maximum possible pixels) on the angular values. It can be seen that the best angular resolutions are achieved at a pixel ratio of 0.80, again illustrating that the use of higher resolutions is not always beneficial. As evidenced by the results, the use of {omega}{sub center} and {omega}{sub max} not only permits the characterization of the angular resolution of an EBSD system, but they allow for a more efficient utilization of the system by identifying appropriate settings depending on the desired angular resolution [6].

El-Dasher, B S; Rollett, A D

2005-02-07T23:59:59.000Z

77

Testing Competing Precipitation Forecasts Accurately and Efficiently: The Spatial Prediction Comparison Test  

Science Journals Connector (OSTI)

Which model is best? Many challenges exist when testing competing forecast models, especially for those with high spatial resolution. Spatial correlation, double penalties, and small-scale errors are just a few such challenges. Many new methods ...

Eric Gilleland

2013-01-01T23:59:59.000Z

78

Spatially distributed temperatures at the base of two mountain snowpacks measured  

E-Print Network (OSTI)

imaging (FLIR) can provide meter-scale temperature resolution in fairly complex terrain (Loheide, FLIR also requires consideration of spatial, temporal and angular variability in emissivity

Dozier, Jeff

79

3-Dimensional Imaging At Nanometer Resolutions  

NLE Websites -- All DOE Office Websites (Extended Search)

3-Dimensional Imaging At Nanometer Resolutions 3-Dimensional Imaging At Nanometer Resolutions 3-Dimensional Imaging At Nanometer Resolutions An apparatus and method for enabling precise, 3-dimensional, photoactivation localization microscopy (PALM). Available for thumbnail of Feynman Center (505) 665-9090 Email 3-Dimensional Imaging At Nanometer Resolutions An apparatus and method for enabling precise, 3-dimensional, photoactivation localization microscopy (PALM) using selective, two-photon activation of fluorophores in a single z-slice of a sample in cooperation with time-gated imaging for reducing the background radiation from other image planes to levels suitable for single-molecule detection and spatial location, are described. U.S. Patent No.: 7,675,045 (DOE S-112,966) Patent Application Filing Date: October 9, 2008

80

Energy Department Releases New Land-Based/Offshore Wind Resource...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

shows the predicted mean annual wind speeds at 80-m height produced from AWS Truepower's data at a spatial resolution of 2.5 km and interpolated to a finer scale. Read more about...

Note: This page contains sample records for the topic "finer spatial resolution" 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

Coherence versus interferometric resolution  

Science Journals Connector (OSTI)

We examine the relation between second-order coherence and resolution in the interferometric detection of phase shifts. While for classical thermal light resolution and second-order coherence are synonymous, we show that for quantum light beams reaching optimum precision second-order coherence and resolution become antithetical.

Alfredo Luis

2010-06-30T23:59:59.000Z

82

Coherence versus interferometric resolution  

SciTech Connect

We examine the relation between second-order coherence and resolution in the interferometric detection of phase shifts. While for classical thermal light resolution and second-order coherence are synonymous, we show that for quantum light beams reaching optimum precision second-order coherence and resolution become antithetical.

Luis, Alfredo [Departamento de Optica, Facultad de Ciencias Fisicas, Universidad Complutense, 28040 Madrid (Spain)

2010-06-15T23:59:59.000Z

83

SESSION 1: SPATIAL AND TEMPORAL MONITORING AND RESOLUTION  

E-Print Network (OSTI)

Environment and Human Health, modified by behaviour and context Specific issues of air pollution: air health WHO IARC: Outdoor air pollution a leading environmental cause of cancer deaths (17 Oct 2013) WHO-response relationships, or to determine association between air pollution and health effects - see e.g. Willocks et al

84

EUV mask reflectivity measurements with micron-scale spatial resolution  

SciTech Connect

The effort to produce defect-free mask blanks for EUV lithography relies on increasing the detection sensitivity of advanced mask inspection tools, operating at several wavelengths. We describe the unique measurement capabilities of a prototype actinic (EUV wavelength) microscope that is capable of detecting small defects and reflectivity changes that occur on the scale of microns to nanometers. Types of defects: (a) Buried Substrate Defects: particles & pits (causes amplitude and/or phase variations); (b) Surface Contamination (reduces reflectivity and (possibly) contrast); (c) Damage from Inspection and Use (reduces the reflectivity of the multilayer coating). This paper presents an overview of several topics where scanning actinic inspection makes a unique contribution to EUVL research. We describe the role of actinic scanning inspection in four cases: defect repair studies; observations of laser damage; after scanning electron microscopy; and native and programmed defects.

Goldberg, Kenneth A.; Rekawa, S.B.; Kemp, C.D.; Barty, A.; Anderson, E.H.; Kearney, Patrick; Han, Hakseung

2008-05-26T23:59:59.000Z

85

EUV mask reflectivity measurements with micro-scale spatial resolution  

SciTech Connect

The effort to produce defect-free mask blanks for EUV lithography relies on increasing the detection sensitivity of advanced mask inspection tools, operating at several wavelengths. They describe the unique measurement capabilities of a prototype actinic (EUV) wavelength microscope that is capable of detecting small defects and reflectivity changes that occur on the scale of microns to nanometers. The defects present in EUV masks can appear in many well-known forms: as particles that cause amplitude or phase variations in the reflected field; as surface contamination that reduces reflectivity and contrast; and as damage from inspection and use that reduces the reflectivity of the multilayer coating. This paper presents an overview of several topics where scanning actinic inspection makes a unique contribution to EUVL research. They describe the role of actinic scanning inspection in defect repair studies, observations of laser damage, actinic inspection following scanning electron microscopy, and the detection of both native and programmed defects.

Goldberg, Kenneth A.; Rekawa, Senajith B.; Kemp, Charles D.; Barty, Anton; Anderson, Erik; Kearney, Patrick; Han, Hakseung

2008-02-01T23:59:59.000Z

86

Scaling Characteristics of Soil Hydraulic Parameters at Varying Spatial Resolutions  

E-Print Network (OSTI)

#1; #1; #1; #1; #1; #1;#2;#3;#4;#5;#6;#7;#8;#2; #3; #3;#2;#11;#12; #5;#1;#11;#5;#2;#1;#8; #14;#8;#1; #5;#4;#8; #15;#16; #3;#17;#4;#5;#2;#8;#18;#3; #3;#19;#12;#11;#12; #1;#8;#3;#11;#8; #20;#3; #15;#5;#6;#7;#8;#1;#18;#3;#11;#5;#3;#4;#8; #12;#1; #4;#17;#11;#5...; #6;#1;#8; #1; #2;#1;#3;#4;#5;#5;#6;#7;#8; #8;#4; #11;#1; #12; #1; #14;#2;#15;#16;#2;#17;#18;#19;#3;#14;#2;#1;#20;#18;#21;#22;#14;#1;#23;#2;#19;#2;#1;#1; #1; #24;#25;#12;#26;#4;#8;#8;#6;#27;#1;#8; #1;#8;#28;#6;#1;#29;#30;#30;#4;#31;#6;#1; #30;#1...

Belur Jana, Raghavendra

2011-08-08T23:59:59.000Z

87

Improved Spatial Resolution for Reflection Mode Infrared Microscopy  

E-Print Network (OSTI)

the secondary mirror of the Schwarzschild objective obscures32x Schwarzschild objective when the secondary mirror isSchwarzschild objective with full illumination of the secondary mirror

Bechtel, Hans A.

2010-01-01T23:59:59.000Z

88

Cellular delivery and site-specific targeting of organic fluorophores for super-resolution imaging in living cells  

E-Print Network (OSTI)

Recent advances in super-resolution fluorescence microscopy have pushed the spatial resolution of biological imaging down to a few nanometers. The key element to the development of such imaging modality is synthetic organic ...

Uttamapinant, Chayasith

2013-01-01T23:59:59.000Z

89

Dispute Resolution Information  

Energy.gov (U.S. Department of Energy (DOE))

Alternative dispute resolution (ADR) is any technique for resolving disputes without resorting to litigation in either an administrative or judicial forum.

90

PMCO: Issue Resolution  

Office of Energy Efficiency and Renewable Energy (EERE)

The expertise available within the Project Management Coordination Office (PMCO) team is regularly called upon to resolve issues that cut across technology offices and require prompt resolution....

91

CONSTRUCTING A WISE HIGH RESOLUTION GALAXY ATLAS  

SciTech Connect

After eight months of continuous observations, the Wide-field Infrared Survey Explorer (WISE) mapped the entire sky at 3.4 {mu}m, 4.6 {mu}m, 12 {mu}m, and 22 {mu}m. We have begun a dedicated WISE High Resolution Galaxy Atlas project to fully characterize large, nearby galaxies and produce a legacy image atlas and source catalog. Here we summarize the deconvolution techniques used to significantly improve the spatial resolution of WISE imaging, specifically designed to study the internal anatomy of nearby galaxies. As a case study, we present results for the galaxy NGC 1566, comparing the WISE enhanced-resolution image processing to that of Spitzer, Galaxy Evolution Explorer, and ground-based imaging. This is the first paper in a two-part series; results for a larger sample of nearby galaxies are presented in the second paper.

Jarrett, T. H.; Masci, F.; Tsai, C. W.; Fowler, J. [Infrared Processing and Analysis Center (IPAC), California Institute of Technology, Pasadena, CA 91125 (United States); Petty, S.; Lake, S.; Wright, E. [Physics and Astronomy Department, University of California, Los Angeles, CA 90095 (United States); Cluver, M. [Australian Astronomical Observatory, P.O. Box 296, Epping, NSW 1710 (Australia); Assef, Roberto J.; Eisenhardt, P. [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Mail Stop 169-221, Pasadena, CA 91109 (United States); Benford, D. [NASA Goddard Space Flight Center, Code 665, Greenbelt, MD 20771 (United States); Blain, A. [Department of Physics and Astronomy, University of Leicester, LE1 7RH Leicester (United Kingdom); Bridge, C.; Neill, James D. [Department of Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States); Donoso, E. [Spitzer Science Center, IPAC, California Institute of Technology, Pasadena, CA 91125 (United States); Koribalski, B. [CSIRO Astronomy and Space Science, Australia Telescope National Facility (ATNF), P.O. Box 76, Epping, NSW 1710 (Australia); Seibert, M. [Observatories of the Carnegie Insititution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Sheth, K. [NASA Postdoctoral Program Fellow. (United States); Stanford, S., E-mail: jarrett@ipac.caltech.edu [Department of Physics, University of California, One Shields Avenue, Davis, CA 95616 (United States)

2012-08-15T23:59:59.000Z

92

Energy relaxation during hot-exciton transport in quantum wells: Direct observation by spatially resolved phonon-sideband spectroscopy  

E-Print Network (OSTI)

We investigate the energy relaxation of excitons during the real-space transport in ZnSe quantum wells by using microphotoluminescence with spatial resolution enhanced by a solid immersion lens. The spatial evolution of ...

Zhao, Hui; Moehl, Sebastian; Kalt, Heinz

2002-10-01T23:59:59.000Z

93

Quantum spatial superresolution by optical centroid measurements  

E-Print Network (OSTI)

Quantum lithography (QL) has been suggested as a means of achieving enhanced spatial resolution for optical imaging, but its realization has been held back by the low multi-photon detection rates of recording materials. Recently, an optical centroid measurement (OCM) procedure was proposed as a way to obtain spatial resolution enhancement identical to that of QL but with higher detection efficiency (M. Tsang, Phys. Rev. Lett. 102, 253601, 2009). Here we describe a variation of the OCM method with still higher detection efficiency based on the use of photon-number-resolving detection. We also report laboratory results for two-photon interference. We compare these results with those of the standard QL method based on multi-photon detection and show that the new method leads to superresolution but with higher detection efficiency.

Heedeuk Shin; Kam Wai Clifford Chan; Hye Jeong Chang; Robert W. Boyd

2011-05-11T23:59:59.000Z

94

Classification of Ding's Schubert Varieties: Finer Rook Equivalence  

E-Print Network (OSTI)

and \\i be related as above. Suppose that f in 7L[x\\,..., xn] lies in some subalgebra 7L\\x\\,..., xm]y where m < n. Then the images of f in Rx and R1' have the same standard form f. Our first extreme case arises when A is an indecomposable partition... the subgroup of permutations fixing {1,.... 77} pointwise. Consider the partial flag variety XN„ = {flags OcVjC-C^C CN : dim V{ = i} . Let w = w\\ • - - wn e S,N be a permutation which is a maximum-length repre sentative for its coset in SN/S{»+I,»+2v...

Develin, Mike; Martin, Jeremy L.; Reiner, Victor

2007-02-01T23:59:59.000Z

95

Oracle Spatial Data Option Spatial Cartridge Oracle8i SpatialIBM ESRI DB2 Spatial ExtenderInformix Informix Spatial  

E-Print Network (OSTI)

; ---- Oracle Spatial Data Option Spatial Cartridge Oracle8i SpatialIBM ESRI DB2 Spatial ExtenderInformix Informix Spatial Datablade Oracle Oracle8i Spatial Oracle Spatial ----SDO_GEOMETRY SDO_GEOMETRY OracleWeb-Based Three-Dimensional Geo-Referenced Visualization, in Proceedings of International Conference of Spatial

Li, Xiang

96

Robustness of Spatial Micronetworks  

E-Print Network (OSTI)

Power lines, roadways, pipelines and other physical infrastructure are critical to modern society. These structures may be viewed as spatial networks where geographic distances play a role in the functionality and construction cost of links. Traditionally, studies of network robustness have primarily considered the connectedness of large, random networks. Yet for spatial infrastructure physical distances must also play a role in network robustness. Understanding the robustness of small spatial networks is particularly important with the increasing interest in microgrids, small-area distributed power grids that are well suited to using renewable energy resources. We study the random failures of links in small networks where functionality depends on both spatial distance and topological connectedness. By introducing a percolation model where the failure of each link is proportional to its spatial length, we find that, when failures depend on spatial distances, networks are more fragile than expected. Accounting...

McAndrew, Thomas C; Bagrow, James P

2015-01-01T23:59:59.000Z

97

Photorefractive Spatial Solitons  

Science Journals Connector (OSTI)

In this chapter we discuss the basic phenomenology and theoretical framework associated with photorefractive spatial solitons. Our attention is mainly centered on explaining the fundamental processes that allo...

Eugenio DelRe; Bruno Crosignani; Paolo Di Porto

2001-01-01T23:59:59.000Z

98

Time-series analysis of high-resolution ebullition fluxes from a stratified, freshwater lake  

E-Print Network (OSTI)

[1] Freshwater lakes can emit significant quantities of methane to the atmosphere by bubbling. The high spatial and temporal heterogeneity of ebullition, combined with a lack of high-resolution field measurements, has made ...

Varadharajan, Charuleka

99

Surface Wind Regionalization over Complex Terrain: Evaluation and Analysis of a High-Resolution WRF Simulation  

Science Journals Connector (OSTI)

This study analyzes the daily-mean surface wind variability over an area characterized by complex topography through comparing observations and a 2-km-spatial-resolution simulation performed with the Weather Research and Forecasting (WRF) model ...

Pedro A. Jiménez; J. Fidel González-Rouco; Elena García-Bustamante; Jorge Navarro; Juan P. Montávez; Jordi Vilà-Guerau de Arellano; Jimy Dudhia; Antonio Muñoz-Roldan

2010-02-01T23:59:59.000Z

100

Wind: wind power density maps at 50 m above ground and 1km resolution...  

Open Energy Info (EERE)

of projection 33 30 0.000 false easting (meters) 0.00000 false northing (meters) 0.00000 Spatial Information Raster: Number of Columns: 2658 Number of Rows: 3926 Pixel Resolution...

Note: This page contains sample records for the topic "finer spatial resolution" 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

Recipes for Correcting the Impact of Effective Mesoscale Resolution on the Estimation of Extreme Winds  

Science Journals Connector (OSTI)

Extreme winds derived from simulations using mesoscale models are underestimated because of the effective spatial and temporal resolutions. This is reflected in the spectral domain as an energy deficit in the mesoscale range. The energy deficit ...

Xiaoli Guo Larsén; Søren Ott; Jake Badger; Andrea N. Hahmann; Jakob Mann

2012-03-01T23:59:59.000Z

102

Resolution Studies on Silicon Strip Sensors with fine Pitch  

E-Print Network (OSTI)

In June 2008 single-sided silicon strip sensors with 50 $\\mu$m readout pitch were tested in a highly energetic pion beam at the SPS at CERN. The purpose of the test was to evaluate characteristic detector properties by varying the strip width and the number of intermediate strips. The experimental setup and first results for the spatial resolution are discussed.

S. Haensel; T. Bergauer; Z. Dolezal; M. Dragicevic; Z. Drasal; M. Friedl; J. Hrubec; C. Irmler; W. Kiesenhofer; M. Krammer; P. Kvasnicka

2009-01-30T23:59:59.000Z

103

Nanoparticle delivery Nanofountain-Probe-Based High-Resolution Patterning  

E-Print Network (OSTI)

Nanoparticle delivery Nanofountain-Probe-Based High-Resolution Patterning and Single-Cell Injection these nanoparticles will require unrealized spatial control. Furthermore, single-cell in vitro transfection methods of functionalized diamond nanoparticles are demonstrated using a broadly applicable nanofountain probe, a tool

Espinosa, Horacio D.

104

Development of New Soft Ionization Mass Spectrometry Approaches for Spatial Imaging of Complex Chemical and Biological Systems  

E-Print Network (OSTI)

world's first C60 SIMS FT-ICR MS. Unique capabilities for imaging biological samples: High mass accuracy spatial resolution (~10 µm) High spatial and mass resolution C60 secondary ion mass spectrometry (SIMS of the colony Conducted first multimodal imaging of biological materials using nano-DESI, SIMS, and matrix

105

Nanometer Resolution Imaging by SIngle Molecule Switching  

SciTech Connect

The fluorescence intensity of single molecules can change dramatically even under constant laser excitation. The phenomenon is frequently called "blinking" and involves molecules switching between high and low intensity states.[1-3] In additional to spontaneous blinking, the fluorescence of some special fluorophores, such as cyanine dyes and photoactivatable fluorescent proteins, can be switched on and off by choice using a second laser. Recent single-molecule spectroscopy investigations have shed light on mechanisms of single molecule blinking and photoswitching. This ability to controllably switch single molecules led to the invention of a novel fluorescence microscopy with nanometer spatial resolution well beyond the diffraction limit.

Hu, Dehong; Orr, Galya

2010-04-02T23:59:59.000Z

106

High Resolution Timing with Low Resolution Clocks A Microsecond Resolution Timer for Sun Workstations  

E-Print Network (OSTI)

High Resolution Timing with Low Resolution Clocks and A Microsecond Resolution Timer for Sun for Sun 3 and Sun 4 workstations1. One can measure average service times without a high resolution clock?" 1. Introduction - Who Needs a Microsecond Clock Beginning with its Sun 3 workstations, Sun

Melvin, Stephen

107

Generation of high-resolution surface temperature distributions Anton A. Darhuber and Sandra M. Troiana)  

E-Print Network (OSTI)

Generation of high-resolution surface temperature distributions Anton A. Darhuber and Sandra M have performed numerical calculations to study the generation of arbitrary temperature profiles with high spatial resolution on the surface of a solid. The characteristics of steady-state distributions

Troian, Sandra M.

108

High-resolution fracture aperture mapping using optical profilometry Pasha Ameli,1  

E-Print Network (OSTI)

High-resolution fracture aperture mapping using optical profilometry Pasha Ameli,1 Jean E. Elkhoury] Fractures play an important role in the Earth's crust, often controlling both mechanical and transport of fracture surfaces and the contacts and void spaces between fracture surfaces at high spatial resolution (10

Elkhoury, Jean

109

High resolution data acquisition  

DOE Patents (OSTI)

A high resolution event interval timing system measures short time intervals such as occur in high energy physics or laser ranging. Timing is provided from a clock (38) pulse train (37) and analog circuitry (44) for generating a triangular wave (46) synchronously with the pulse train (37). The triangular wave (46) has an amplitude and slope functionally related to the time elapsed during each clock pulse in the train. A converter (18, 32) forms a first digital value of the amplitude and slope of the triangle wave at the start of the event interval and a second digital value of the amplitude and slope of the triangle wave at the end of the event interval. A counter (26) counts the clock pulse train (37) during the interval to form a gross event interval time. A computer (52) then combines the gross event interval time and the first and second digital values to output a high resolution value for the event interval.

Thornton, Glenn W. (Los Alamos, NM); Fuller, Kenneth R. (Los Alamos, NM)

1993-01-01T23:59:59.000Z

110

High resolution data acquisition  

DOE Patents (OSTI)

A high resolution event interval timing system measures short time intervals such as occur in high energy physics or laser ranging. Timing is provided from a clock, pulse train, and analog circuitry for generating a triangular wave synchronously with the pulse train (as seen in diagram on patent). The triangular wave has an amplitude and slope functionally related to the time elapsed during each clock pulse in the train. A converter forms a first digital value of the amplitude and slope of the triangle wave at the start of the event interval and a second digital value of the amplitude and slope of the triangle wave at the end of the event interval. A counter counts the clock pulse train during the interval to form a gross event interval time. A computer then combines the gross event interval time and the first and second digital values to output a high resolution value for the event interval.

Thornton, G.W.; Fuller, K.R.

1993-04-06T23:59:59.000Z

111

Spectrophotometric Resolution of Stellar Atmospheres with Microlensing  

E-Print Network (OSTI)

Microlensing is a powerful tool for studying stellar atmospheres because as the source crosses regions of formally infinite magnification (caustics) the surfaceof the star is resolved, thereby allowing one to measure the radial intensity profile, both photometrically and spectroscopically. However, caustic crossing events are relatively rare, and monitoring them requires intensive application of telescope resources. It is therefore essential that the observational parameters needed to accurately measure the intensity profile are quantified. We calculate the expected errors in the recovered radial intensity profile as a function of the unlensed flux, source radius, spatial resolution the recovered intensity profile, and caustic crossing time for the two principle types of caustics: point-mass and binary lenses. We demonstrate that for both cases there exist simple scaling relations between these parameters and the resultant errors. We find that the error as a function of the spatial resolution of the recovered profile, parameterized by the number of radial bins, increases as $N_R^{3/2}$, considerably faster than the naive $N_R^{1/2}$ expectation. Finally, we discuss the relative advantages of binary caustic-crossing events and point-lens events. Binary events are more common, easier to plan for, and provide more homogeneous information about the stellar atmosphere. However, a sub-class of point-mass events with low impact parameters can provide dramatically more information provided that they can be recognized in time to initiate observations.

B. Scott Gaudi; Andrew Gould

1998-02-14T23:59:59.000Z

112

Free resolutions of algebras.  

E-Print Network (OSTI)

Given an algebra A, presented by generators and relations, i.e. as a quotient of a tensor algebra by an ideal, we construct a free algebra resolution of A, i.e. a differential graded algebra which is quasi-isomorphic to A and which is itself a tensor algebra. The construction rests combinatorially on the set of bracketings that arise naturally in the description of a free contractible differential graded algebra with given generators.

Joe Chuang; Alastair King

113

Geologic spatial analysis  

SciTech Connect

This report describes the development of geologic spatial analysis research which focuses on conducting comprehensive three-dimensional analysis of regions using geologic data sets that can be referenced by latitude, longitude, and elevation/depth. (CBS)

Thiessen, R.L.; Eliason, J.R.

1989-01-01T23:59:59.000Z

114

Characterizing the multi–scale spatial structure of remotely sensed evapotranspiration with information theory  

E-Print Network (OSTI)

attempting to estimate the fluxes from satellite data sources, as these platforms observe the spatially aggregated value of fields such as radiometric temperature at the satellite resolution. An approach to confronting this aspect of the scaling prob- lem... below that observed by the satellite (i.e. subgrid heterogeneity). The use of satellite data provides the opportunity to achieve measurements at a variety of spatial resolutions, but the interpretation and validation of these measurements are often...

Brunsell, Nathaniel A.

2011-08-22T23:59:59.000Z

115

High resolution time interval meter  

DOE Patents (OSTI)

Method and apparatus are provided for measuring the time interval between two events to a higher resolution than reliability available from conventional circuits and component. An internal clock pulse is provided at a frequency compatible with conventional component operating frequencies for reliable operation. Lumped constant delay circuits are provided for generating outputs at delay intervals corresponding to the desired high resolution. An initiation START pulse is input to generate first high resolution data. A termination STOP pulse is input to generate second high resolution data. Internal counters count at the low frequency internal clock pulse rate between the START and STOP pulses. The first and second high resolution data are logically combined to directly provide high resolution data to one counter and correct the count in the low resolution counter to obtain a high resolution time interval measurement.

Martin, A.D.

1986-05-09T23:59:59.000Z

116

WHAT'S SPATIAL ABOUT SPATIAL DATA MINING: THREE CASE STUDIES  

E-Print Network (OSTI)

Chapter 1 WHAT'S SPATIAL ABOUT SPATIAL DATA MINING: THREE CASE STUDIES Shashi Shekhar, Yan Huang, Weili Wu, C.T. Lu, and S. Chawla Abstract Spatial data mining is the process of discovering interesting patterns from tra­ ditional numeric and categorical data due to the complexity of spatial data types

Shekhar, Shashi

117

Estimation of axisymmetric spatial distributions of permeability and porosity from pressure-transient data acquired with  

E-Print Network (OSTI)

to quantify the spatial resolution and reliability of in situ permanent pressure data to detecting hydrocarbonEstimation of axisymmetric spatial distributions of permeability and porosity from pressure-transient data acquired with in situ permanent sensors Faruk O. Alpak*, Carlos Torres-Verdi´n, Kamy Sepehrnoori

Torres-Verdín, Carlos

118

Spatial Data Structures Hanan Samet  

E-Print Network (OSTI)

Spatial Data Structures Hanan Samet Computer Science Department and Institute of Advanced Computer An overview is presented of the use of spatial data structures in spatial databases. The focus to the space occupied by it. Such techniques are known as spatial indexing methods. Hierarchical data

Shahabi, Cyrus

119

Y High-Resolution  

NLE Websites -- All DOE Office Websites (Extended Search)

Y Y High-Resolution . __ DO NOT M I C PET COVER for medical science studies Lawrence Berkeley Laboratory University of California September 1989 DlSTRlBUTlGN OF THIS DOCUMENT IS U#LIIY/ITEE Acknowledgments This booklet was prepared under the sponsorship of the U.S. Department of Energy Office of Health Effects Research, the National Institutes of Health, and the Lawrence Berkeley Laboratory's Research Medicine and Radiation Biophysics Division. We thank Sarah Cahn and Douglas Vaughan for coordination of this booklet. esolution PET for Medical Science Studies Thomas F. Budinger Stephen E. Derenzo Ronald H. Huesman William J. Jagust Peter E. Valk CONTENTS A PET Primer Positron Emission Tomography: Evolution of a Technology 7 PET Theory: Emission, Detection, and Reconstruction

120

Astron. Nachr./AN 32X (2002) X, XXXXXX Imaging Magnetographs for High-Resolution Solar Observations in  

E-Print Network (OSTI)

Magnetograph (VIM) is basically a twin of IRIM for observations in the wavelength range from 550 nm to 700 nm goals of VIM and IRIM are high temporal and spatial resolution observations while maintaining moderate

Note: This page contains sample records for the topic "finer spatial resolution" 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

Spatial Computation Mihai Budiu  

E-Print Network (OSTI)

software pipelining. A comparison of Spatial Computation and superscalar processors highlights some-level simulation however suggests that the energy efficiency of Application-Specific Hard- ware is three orders. The second part of this document evaluates the performance of the generated circuits using simulation. Using

Budiu, Mihai

122

EMSL - atomic-resolution imaging  

NLE Websites -- All DOE Office Websites (Extended Search)

atomic-resolution-imaging en Molecular Hydrogen Formation from Proximal Glycol Pairs on TiO2(110). http:www.emsl.pnl.govemslwebpublicationsmolecular-hydrogen-formation-proxima...

123

High Resolution Solar Energy Resource Assessment within the UNEP Project  

Open Energy Info (EERE)

High Resolution Solar Energy Resource Assessment within the UNEP Project High Resolution Solar Energy Resource Assessment within the UNEP Project SWERA Dataset Summary Description (Abstract): To expand the world wide use of renewable energy a consistent, reliable, verifiable, and easily accessible database of solar energy resources is needed. Within the UNEP (United Nations Environment Programme) Project SWERA (Solar and Wind Energy Resource Assessment, http://swera.unep.net), funded by GEF (Global Environment Facility), a global database of solar and wind energy resources will be set up. SWERA will provide, beside the wind products, global horizontal irradiance, which is mostly used to plan photovoltaic systems, and direct normal irradiance, which is needed for solar concentrating systems. For selected countries throughout the world, additionally high resolution data will be produced which is required to plan solar energy systems in detail. Within SWERA, the partners DLR, SUNY and INPE calculate solar irradiance with high temporal resolution of 1 hour and with a spatial resolution of 10km x 10km. By processing data from geostationary satellites we provide solar irradiance data for Cuba, El Salvador, Honduras, Nicaragua, Guatemala, Brazil, Ghana, Ethiopia, Kenya, China, Sri Lanka, Nepal, and Bangladesh. In this paper we describe the ongoing work of developing this high resolution solar irradiance tx_metadatatool and cross-checking of the used solar irradiance algorithms for various satellite data.

124

Transportation Issues and Resolutions Compilation of Laboratory...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Transportation Issues and Resolutions Compilation of Laboratory Transportation Work Package Reports Transportation Issues and Resolutions Compilation of Laboratory Transportation...

125

High Resolution PET with 250 micrometer LSO Detectors and Adaptive Zoom  

SciTech Connect

There have been impressive improvements in the performance of small-animal positron emission tomography (PET) systems since their first development in the mid 1990s, both in terms of spatial resolution and sensitivity, which have directly contributed to the increasing adoption of this technology for a wide range of biomedical applications. Nonetheless, current systems still are largely dominated by the size of the scintillator elements used in the detector. Our research predicts that developing scintillator arrays with an element size of 250 {micro}m or smaller will lead to an image resolution of 500 {micro}m when using 18F- or 64Cu-labeled radiotracers, giving a factor of 4-8 improvement in volumetric resolution over the highest resolution research systems currently in existence. This proposal had two main objectives: (i) To develop and evaluate much higher resolution and efficiency scintillator arrays that can be used in the future as the basis for detectors in a small-animal PET scanner where the spatial resolution is dominated by decay and interaction physics rather than detector size. (ii) To optimize one such high resolution, high sensitivity detector and adaptively integrate it into the existing microPET II small animal PET scanner as a 'zoom-in' detector that provides higher spatial resolution and sensitivity in a limited region close to the detector face. The knowledge gained from this project will provide valuable information for building future PET systems with a complete ring of very high-resolution detector arrays and also lay the foundations for utilizing high-resolution detectors in combination with existing PET systems for localized high-resolution imaging.

Cherry, Simon R.; Qi, Jinyi

2012-01-08T23:59:59.000Z

126

Unsupervised Feature Learning for High-Resolution Satellite Image Classification  

SciTech Connect

The rich data provided by high-resolution satellite imagery allow us to directly model geospatial neighborhoods by understanding their spatial and structural patterns. In this paper we explore an unsupervised feature learning approach to model geospatial neighborhoods for classification purposes. While pixel and object based classification approaches are widely used for satellite image analysis, often these approaches exploit the high-fidelity image data in a limited way. In this paper we extract low-level features to characterize the local neighborhood patterns. We exploit the unlabeled feature measurements in a novel way to learn a set of basis functions to derive new features. The derived sparse feature representation obtained by encoding the measured features in terms of the learned basis function set yields superior classification performance. We applied our technique on two challenging image datasets: ORNL dataset representing one-meter spatial resolution satellite imagery representing five land-use categories and, UCMERCED dataset consisting of 21 different categories representing sub-meter resolution overhead imagery. Our results are highly promising and, in the case of UCMERCED dataset we outperform the best results obtained for this dataset. We show that our feature extraction and learning methods are highly effective in developing a detection system that can be used to automatically scan large-scale high-resolution satellite imagery for detecting large-facility.

Cheriyadat, Anil M [ORNL

2013-01-01T23:59:59.000Z

127

Regional Comparisons, Spatial Aggregation,  

Gasoline and Diesel Fuel Update (EIA)

Regional Regional Comparisons, Spatial Aggregation, and Asymmetry of Price Pass-Through in U.S. Gasoline Markets MICHAEL YE*, JOHN ZYREN**, JOANNE SHORE**, AND MICHAEL BURDETTE** Abstract Spot to retail price pass-through behavior of the U.S. gasoline market was investigated at the national and regional levels, using weekly wholesale and retail motor gasoline prices from January 2000 to the present. Asymmetric pass-through was found across all regions, with faster pass-through when prices are rising. Pass-through patterns, in terms of speed and time for completion, were found to vary from region to region. Spatial aggregation was investigated at the national level and the East Coast with the aggregated cumulative pass-through being greater than the volume-weighted regional pass-through when spot prices increase. These results are useful to the petroleum industry, consumers,

128

Wind: wind power density GIS data at 50m above ground and 400m resolution  

Open Energy Info (EERE)

400m resolution 400m resolution for Sri Lanka from NREL Dataset Summary Description (Abstract): Raster GIS data, 50 m wind power density for Sri Lanka (Purpose): To provide information on the wind resource potential within Sri Lanka and selected offshore areas (Supplemental Information): ***** Spatial Reference Information (Beg) *****Projection ParametersProjection UTMZone 44Datum WGS84Zunits NoneUnits METERSSpheroid WGS84Xshift 0.0000000000Yshift 0.0000000000ParametersSpatial InformationRaster:Number of Columns: 764Number of Rows: 1218Pixel Resolution (m): 400Data Type: real***** Spatial Reference Information (End) ***** Source NREL Date Released June 30th, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords GIS NREL Sri Lanka SWERA UNEP wind Data application/zip icon Download Data (zip, 771.5 KiB)

129

Satellite data for high resolution offshore wind resource mapping: A data fusion approach M.B. Ben Ticha a,*  

E-Print Network (OSTI)

Satellite data for high resolution offshore wind resource mapping: A data fusion approach M.B. Ben accurate high spatial and temporal resolutions wind measurements. Offshore, satellite data are an accurate radar, scatterometer, data fusion, offshore wind energy resource assessment. 1. INTRODUCTION Since

Paris-Sud XI, Université de

130

Enhanced High Resolution RBS System  

SciTech Connect

Improvements in full spectrum resolution with the second NEC high resolution RBS system are summarized. Results for 50 A ring TiN/HfO films on Si yielding energy resolution on the order of 1 keV are also presented. Detector enhancements include improved pulse processing electronics, upgraded shielding for the MCP/RAE detector, and reduced noise generated from pumping. Energy resolution measurements on spectra front edge coupled with calculations using 0.4mStr solid angle show that beam energy spread at 400 KeV from the Pelletron registered accelerator is less than 100 eV. To improve user throughput, magnet control has been added to the automatic data collection. Depth profiles derived from experimental data are discussed. For the thin films profiled, depth resolutions were on the Angstrom level with the non-linear energy/channel conversions ranging from 100 to 200 eV.

Pollock, Thomas J.; Hass, James A.; Klody, George M. [National Electrostatics Corp., Middleton, Wisconsin, U. S. A. 53562-0310 (United States)

2011-06-01T23:59:59.000Z

131

Spatial characteristics of the difference between MISR and MODIS aerosol optical depth retrievals over mainland Southeast Asia  

E-Print Network (OSTI)

autoregressive (SAR) model Spatial clustering Data assimilation Mainland Southeast Asia The difference between satellite, aerosol products generated using data from these two sensors often exhibit noticeable differences Resolution Imaging Spectroradiometer (MODIS) aboard the NASA Earth Observation System's Terra satellite

Shi, Tao

132

High-resolution chemical imaging of gold nanoparticles using hard x-ray ptychography  

SciTech Connect

We combine resonant scattering with (ptychographic) scanning coherent diffraction microscopy to determine the chemical state of gold nanoparticles with high spatial resolution. Ptychographic images of the sample are recorded for a series of energies around the gold L{sub 3} absorption edge. From these data, chemical information in the form of absorption and resonant scattering spectra is reconstructed at each location in the sample. For gold nanoparticles of about 100 nm diameter, a spatial resolution of about 20-30 nm is obtained. In the future, this microscopy approach will open the way to operando studies of heterogeneous catalysts on the nanometer scale.

Hoppe, R.; Patommel, J.; Schroer, C. G. [Institute of Structural Physics, Technische Universitaet Dresden, D-01062 Dresden (Germany)] [Institute of Structural Physics, Technische Universitaet Dresden, D-01062 Dresden (Germany); Reinhardt, J. [Institute of Structural Physics, Technische Universitaet Dresden, D-01062 Dresden (Germany) [Institute of Structural Physics, Technische Universitaet Dresden, D-01062 Dresden (Germany); Deutsches Elektronen-Synchrotron DESY, D-22607 Hamburg (Germany)] [Germany; Hofmann, G.; Grunwaldt, J.-D. [Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, D-76131 Karlsruhe (Germany)] [Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, D-76131 Karlsruhe (Germany); Damsgaard, C. D. [Center for Electron Nanoscopy and Department of Physics, Technical University of Denmark, DK-2800 Lyngby (Denmark)] [Center for Electron Nanoscopy and Department of Physics, Technical University of Denmark, DK-2800 Lyngby (Denmark); Wellenreuther, G.; Falkenberg, G. [Deutsches Elektronen-Synchrotron DESY, D-22607 Hamburg (Germany)] [Deutsches Elektronen-Synchrotron DESY, D-22607 Hamburg (Germany)

2013-05-20T23:59:59.000Z

133

SPATIALLY UNSUPERVISED ANALYSIS OF WITHIN-SUBJECT FMRI DATA USING MULTIPLE EXTRAPOLATIONS OF 3D ISING FIELD PARTITION FUNCTIONS  

E-Print Network (OSTI)

SPATIALLY UNSUPERVISED ANALYSIS OF WITHIN-SUBJECT FMRI DATA USING MULTIPLE EXTRAPOLATIONS OF 3D of spatial resolution. A more challenging approach works on the unsmoothed data by intro- ducing some prior Resonance Imaging (fMRI) data, where the goal is to automatically recover activated regions and estimate

Paris-Sud XI, Université de

134

spatial analysis | OpenEI Community  

Open Energy Info (EERE)

spatial analysis Home Geospatial Description: Discuss and explore geospatial data available on OpenEI. geospatial GIS spatial analysis...

135

Calculation of spatial response of 2D beam emission spectroscopy diagnostic on MAST  

SciTech Connect

The beam emission spectroscopy (BES) turbulence diagnostic on MAST is to be upgraded in June 2010 from a one-dimensional trial system to a two-dimensional imaging system (8 radialx4 poloidal channels) based on a newly developed avalanche photodiode array camera. The spatial resolution of the new system is calculated in terms of the point spread function to account for the effects of field-line curvature, observation geometry, the finite lifetime of the excited state of the beam atoms, and beam attenuation and divergence. It is found that the radial spatial resolution is {approx}2-3 cm and the poloidal spatial resolution {approx}1-5 cm depending on the radial viewing location. The absolute number of detected photons is also calculated, hence the photon noise level can be determined.

Ghim, Young-chul [Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford OX1 3NP (United Kingdom); EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Field, A. R. [EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Zoletnik, S.; Dunai, D. [KFKI RMKI, Association EURATOM/HAS, P.O. Box 49, H-1525 Budapest (Hungary)

2010-10-15T23:59:59.000Z

136

Impact of Resolution on Simulation of Closed Mesoscale Cellular Convection Identified by Dynamically Guided Watershed Segmentation  

SciTech Connect

Organized mesoscale cellular convection (MCC) is a common feature of marine stratocumulus that forms in response to a balance between mesoscale dynamics and smaller scale processes such as cloud radiative cooling and microphysics. We use the Weather Research and Forecasting model with chemistry (WRF-Chem) and fully coupled cloud-aerosol interactions to simulate marine low clouds during the VOCALS-REx campaign over the southeast Pacific. A suite of experiments with 3- and 9-km grid spacing indicates resolution-dependent behavior. The simulations with finer grid spacing have smaller liquid water paths and cloud fractions, while cloud tops are higher. The observed diurnal cycle is reasonably well simulated. To isolate organized MCC characteristics we develop a new automated method, which uses a variation of the watershed segmentation technique that combines the detection of cloud boundaries with a test for coincident vertical velocity characteristics. This ensures that the detected cloud fields are dynamically consistent for closed MCC, the most common MCC type over the VOCALS-REx region. We demonstrate that the 3-km simulation is able to reproduce the scaling between horizontal cell size and boundary layer height seen in satellite observations. However, the 9-km simulation is unable to resolve smaller circulations corresponding to shallower boundary layers, instead producing invariant MCC horizontal scale for all simulated boundary layers depths. The results imply that climate models with grid spacing of roughly 3 km or smaller may be needed to properly simulate the MCC structure in the marine stratocumulus regions.

Martini, Matus; Gustafson, William I.; Yang, Qing; Xiao, Heng

2014-11-27T23:59:59.000Z

137

Single shot extreme ultraviolet laser imaging of nanostructures with wavelength resolution  

SciTech Connect

We have demonstrated near-wavelength resolution microscopy in the extreme ultraviolet. Images of 50 nm diameter nanotubes were obtained with a single {approx}1 ns duration pulse from a desk-top size 46.9 nm laser. We measured the modulation transfer function of the microscope for three different numerical aperture zone plate objectives, demonstrating that 54 nm half-period structures can be resolved. The combination of near-wavelength spatial resolution and high temporal resolution opens myriad opportunities in imaging, such as the ability to directly investigate dynamics of nanoscale structures.

Jones, Juanita; Brewer, Courtney A.; Brizuela, Fernando; Wachulak, Przemyslaw; Martz, Dale H.; Chao, Weilun; Anderson, Erik H.; Attwood, David T.; Vinogradov, Alexander V.; Artyukov, Igor A.; Ponomareko, Alexander G.; Kondratenko, Valeriy V.; Marconi, Mario C.; Rocca, Jorge J.; Menoni, Carmen S.

2008-01-07T23:59:59.000Z

138

Alternative Dispute Resolution | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Alternative Dispute Resolution Alternative Dispute Resolution Alternative Dispute Resolution Alternative Dispute Resolution The Office of Conflict Prevention and Resolution (formerly the Office of Dispute Resolution) provides assistance throughout the Department and to its contractors on using various types of Alternative Dispute Resolution (ADR) to prevent and resolve disputes without litigation. The Director of the office offers training, provides system design support, and acts as a consultant for all types of dispute resolution, ranging from preventive techniques, such as partnering, differing professional opinion processes and ombuds, to mediation in many types of disputes, such as intellectual property, contracts, environmental, grants, equal employment opportunity (Title VII), and whistleblower complaints.

139

Nanometer Resolution Imaging by SIngle Molecule Switching. |...  

NLE Websites -- All DOE Office Websites (Extended Search)

Nanometer Resolution Imaging by SIngle Molecule Switching. Nanometer Resolution Imaging by SIngle Molecule Switching. Abstract: The fluorescence intensity of single molecules can...

140

Fluorescence, Super Resolution STORM Microscope | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

fluorescence imaging of the intact cell with nanometer resolution. It incorporates single-molecule fluorescence techniques to reconstruct super-resolution images using...

Note: This page contains sample records for the topic "finer spatial resolution" 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

Spatial Corrections of ROSAT HRI Observations  

E-Print Network (OSTI)

X-ray observations with the ROSAT High Resolution Imager (HRI) often have spatial smearing on the order of 10 arcsec (Morse 1994). This degradation of the intrinsic resolution of the instrument (5 arcsec) can be attributed to errors in the aspect solution associated with the wobble of the space craft or with the reacquisition of the guide stars. We have developed a set of IRAF/PROS and MIDAS/EXSAS routines to minimize these effects. Our procedure attempts to isolate aspect errors that are repeated through each cycle of the wobble. The method assigns a 'wobble phase' to each event based on the 402 second period of the ROSAT wobble. The observation is grouped into a number of phase bins and a centroid is calculated for each sub-image. The corrected HRI event list is reconstructed by adding the sub-images which have been shifted to a common source position. This method has shown approx. 30% reduction of the full width half maximum (FWHM) of an X-ray observation of the radio galaxy 3C 120. Additional examples are presented.

D. E. Harris; J. D. Silverman; G. Hasinger; I. Lehmann

1998-11-08T23:59:59.000Z

142

Persistent Ocean Monitoring with Underwater Gliders: Path Plans and Adapting Sampling Resolution 3D/4D  

E-Print Network (OSTI)

, penalized for navigating through waters of large magnitude ocean currents, and is length constrained. AlongPersistent Ocean Monitoring with Underwater Gliders: Path Plans and Adapting Sampling Resolution 3D Abstract Ocean processes are dynamic and complex events that occur on multiple different spatial

Frandsen, Jannette B.

143

Accurate model-based high resolution cardiac image reconstruction in dual source CT  

Science Journals Connector (OSTI)

Cardiac imaging represents one of the most challenging imaging problems, requiring high spatial and temporal resolutions along with good tissue contrast. One of the newest clinical cardiac CT scanners incorporates two source-detector pairs in order to ... Keywords: cardiac, dual source CT, iterative method, model-based imaging

Synho Do; Sanghee Cho; W. Clem Karl; Mannudeep K. Kalra; Thomas J. Brady; Homer Pien

2009-06-01T23:59:59.000Z

144

Spatial Computers for Emergency Support  

Science Journals Connector (OSTI)

......devices to share data. A grid-based structure is used...The size of the spatial grid used is 1000 1000 points...storage size, spatial grid configuration and update...hazard is considered, the benefit of communication is even...evacuation simulator for smart emergency management......

Avgoustinos Filippoupolitis; Gokce Gorbil; Erol Gelenbe

2013-12-01T23:59:59.000Z

145

Spatial Entropy-Based Clustering for Mining Data with Spatial Correlation  

E-Print Network (OSTI)

Spatial Entropy-Based Clustering for Mining Data with Spatial Correlation Baijie Wang and Xin Wang research area in the field of spatial data mining, which groups objects into meaningful subclasses based on their spatial and non- spatial attributes [1], [2]. In spatial data, spatial attributes, such as coordinates

146

Super?resolution algorithms for ultrasonic nondestructive evaluation imagery  

Science Journals Connector (OSTI)

The spatio?temporal range resolution of ultrasonic measurements is often severely limited by the inherent band?limited spectral transfer function of ultrasonic transducers. This is manifested as ringing in the time domain. Super?resolution algorithms and a new MATLAB?based software system are presented for improving spatial resolution in one?dimensional (1?D) pulse?echo signals (A?scans). Two?dimensional (2?D) images (B?scans) and 3?D volumes are formed from suites of processed 1?D signals. The algorithms solve two inverse problems that are ill?posed and ill?conditioned. Regularization techniques and prior constraints are used to ensure useful results in practice. Given a noisy reflection signal (A?scan) u(t) and an associated reference signal x(t) the algorithms first solve the system identification problem to produce an optimal least?squares bandlimited estimate h?(t) of the impulse response of the material under test. Next an algorithm based upon the method of alternating orthogonal projections produces a spectrum?extrapolated version h? e (t) of the impulse response estimate. This estimate when used in place of the raw reflection signal u(t) enhances the spatio?temporal resolution by mitigating the transducer distortion. The efficacy of the algorithms is demonstrated on real data from controlled experiments. Three different practical applications are presented showing improved location of material interface boundaries. [Work supported by Grant UCRL?ABS?222494.

2006-01-01T23:59:59.000Z

147

A High Resolution Performance Monitoring  

E-Print Network (OSTI)

for many applications in this modern era. Often, specialized and expensive hardware or software devices may to imagine that we need to measure time so accurately but it is essential for many aspects of modern life with accuracy of milliseconds. Specially designed external hardware may be used when higher resolution

148

Spatial Data Types: Conceptual Foundation for  

E-Print Network (OSTI)

Spatial Data Types: Conceptual Foundation for the Design and Implementation of Spatial Database markus.schneider@fernuni-hagen.de #12;Markus Schneider, Tutorial "Spatial Data Types" 2 Abstract Spatial are usually called spatial data types, such as point, line, and region but also include more complex types

Güting, Ralf Hartmut

149

Disordered environments in spatial games  

Science Journals Connector (OSTI)

The Prisoner’s dilemma is the main game theoretical framework in which the onset and maintainance of cooperation in biological populations is studied. In the spatial version of the model, we study the robustness of cooperation in heterogeneous ecosystems in spatial evolutionary games by considering site diluted lattices. The main result is that, due to disorder, the fraction of cooperators in the population is enhanced. Moreover, the system presents a dynamical transition at ?*, separating a region with spatial chaos from one with localized, stable groups of cooperators.

Mendeli H. Vainstein and Jeferson J. Arenzon

2001-10-22T23:59:59.000Z

150

Potential High Resolution Dosimeters For MRT  

SciTech Connect

Microbeam Radiation Therapy (MRT) uses highly collimated, quasi-parallel arrays of X-ray microbeams of 50-600 keV, produced by 2nd and 3rd generation synchrotron sources, such as the National Synchrotron Light Source (NSLS) in the U.S., and the European Synchrotron Radiation Facility (ESRF) in France, respectively. High dose rates are necessary to deliver therapeutic doses in microscopic volumes, to avoid spreading of the microbeams by cardiosynchronous movement of the tissues. A small beam divergence and a filtered white beam spectrum in the energy range between 30 and 250 keV results in the advantage of steep dose gradients with a sharper penumbra than that produced in conventional radiotherapy. MRT research over the past 20 years has allowed a vast number of results from preclinical trials on different animal models, including mice, rats, piglets and rabbits. Microbeams in the range between 10 and 100 micron width show an unprecedented sparing of normal radiosensitive tissues as well as preferential damage to malignant tumor tissues. Typically, MRT uses arrays of narrow ({approx}25-100 micron-wide) microplanar beams separated by wider (100-400 microns centre-to-centre, c-t-c) microplanar spaces. We note that thicker microbeams of 0.1-0.68 mm used by investigators at the NSLS are still called microbeams, although some invesigators in the community prefer to call them minibeams. This report, however, limits it discussion to 25-100 {mu}m microbeams. Peak entrance doses of several hundreds of Gy are surprisingly well tolerated by normal tissues. High resolution dosimetry has been developed over the last two decades, but typical dose ranges are adapted to dose delivery in conventional Radiation Therapy (RT). Spatial resolution in the sub-millimetric range has been achieved, which is currently required for quality assurance measurements in Gamma-knife RT. Most typical commercially available detectors are not suitable for MRT applications at a dose rate of 16000 Gy/s, micron resolution and a dose range over several orders of magnitude. This paper will give an overview of all dosimeters tested in the past at the ESRF with their advantages and drawbacks. These detectors comprise: Ionization chambers, Alanine Dosimeters, MOSFET detectors, Gafchromic registered films, Radiochromic polymers, TLDs, Polymer gels, Fluorescent Nuclear Track Detectors (Al{sub 2}O{sub 3}:C, Mg single crystal detectors), OSL detectors and Floating Gate-based dosimetry system. The aim of such a comparison shall help with a decision on which of these approaches is most suitable for high resolution dose measurements in MRT. The principle of these detectors will be presented including a comparison for some dosimeters exposed with the same irradiation geometry, namely a 1x1 cm{sup 5} field size with microbeam exposures at the surface, 0.1 cm and 1 cm in depth of a PMMA phantom. For these test exposures, the most relevant irradiation parameters for future clinical trials have been chosen: 50 micron FWHM and 400 micron c-t-c distance. The experimental data are compared with Monte Carlo calculations.

Braeuer-Krisch, E.; Brochard, T.; Prezado, Y.; Bravin, A.; Berkvens, P. [European Synchrotron Radiation Facility (ESRF), 6 rue Horowitz, BP220, F-38043 Grenoble (France); Rosenfeld, A.; Lerch, M.; Petasecca, M. [Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW 2522 (Australia); Akselrod, M.; Sykora, J.; Bartz, J. [Landauer, Inc., Stillwater Crystal Growth Division, Stillwater OK, 74074 (United States); Ptaszkiewicz, M.; Olko, P. [Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Department of Radiation Physics and Dosimetry, ul. Radzikowskiego 152, PL 31-342 Krakow (Poland); Berg, A.; Wieland, M. [Medizinische Universitaet Wien, Zentrum f. Biomedizinische Technik und Physik (Austria); Doran, S. [Department of Physics, University of Surrey, Guildford (United Kingdom); Kamlowski, A. [Bruker Biospin, Rheinstetten (Germany); Cellere, G. [DEI, Department of Information Engineering, via Gradenigo, 6/B, 35131 PADOVA (Italy) and Applied Materials Baccini Via Postumia Ovest, 244, 31050 San Biagio di Callalta, Treviso; Paccagnella, A. [DEI, Department of Information Engineering, via Gradenigo, 6/B, 35131 PADOVA (Italy); Siegbahn, E. A. [Department of Medical Physics, Karolinska Universitetssjukhuset, 17176 Stockholm (Sweden)

2010-07-23T23:59:59.000Z

151

Radiometry High Spectral Resolution Fourier  

NLE Websites -- All DOE Office Websites (Extended Search)

High Spectral Resolution Fourier High Spectral Resolution Fourier Transform Infrared Instruments for the Atmospheric Radiation Measurement Program H. E. Revercomb, W. L. Smith, R. O. Knuteson, F. A. Best, R. G. Dedecker, T. P. Dirkx, R. A. Herbsleb, and J. F. Short University of Wisconsin Madison, Wisconsin H. B. Howell National Oceanic and Atmospheric Administration Systems Design and Applications Branch Madison, Wisconsin D. Murcray and F. Murcray University of Denver Denver, Colorado Accurate and spectrally detailed observations of the thermal emission from radiatively important atmospheric gases, aerosols, and clouds have been identified as crucial for realizing the overall objectives of the Atmospheric Radiation Measurement (ARM) Program to improve the treatment of radiation and clouds in climate models. The observed

152

Highest-Resolution Ribosome Structure  

NLE Websites -- All DOE Office Websites (Extended Search)

Highest-Resolution Ribosome Structure Print Highest-Resolution Ribosome Structure Print The last step in converting the genetic information stored in DNA into the major functional parts of cells is protein biosynthesis. Protein synthesis occurs on the ribosome, a cellular factory found in all forms of life. In contrast to most cellular machines, the ribosome contains a functional core of RNA that is enhanced by ribosomal proteins and accessory factors. Two structures of the intact ribosome from the common bacterium Escherichia coli, determined by a Berkeley-Berlin collaboration to a resolution of 3.5 Ã…, the highest yet achieved, provide many new insights into how the ribosome factory works. Ribosomes Ready for Extreme Close-Up In 1999, the first structure of the intact ribosome-a very large, asymmetric protein that is difficult to crystallize-was solved by x-ray crystallography at the ALS (see "Solving the Ribosome Puzzle"). Since then, scientists have developed quite an extensive photo gallery of ribosomes from various organisms and in various configurations. More importantly, they have sharpened the focus significantly, going from a resolution of 7.8 Ã… in 1999, to 5.5 Ã… in 2001 (see "Zooming in on Ribosomes"), to an amazing 3.5 Ã… in this latest work. What was initially seen as fuzzy "fingers" of electron density can now be resolved into individual nucleotides in the RNA strands. Serendipitously, the crystals used in this particular study contained two versions of the ribosome, each one in a different "pose," allowing the researchers to compare the positions of the various parts and deduce how they work. With these sharper images, scientists are now better able to interpret previous data, test models, and develop new theories, both practical (how do antibiotics that target the ribosome work?) and theoretical (how much has the ribosome evolved from bacteria to human?). Stay tuned.

153

Free resolutions via Gröbner bases.  

E-Print Network (OSTI)

For associative algebras in many different categories, it is possible to develop the machinery of Gröbner bases. A Gröbner basis of defining relations for an algebra of such a category provides a "monomial replacement" of this algebra. The main goal of this article is to demonstrate how this machinery can be used for the purposes of homological algebra. More precisely, our approach goes in three steps. First, we define a combinatorial resolution for the monomial replacement of an object. Second, we extract from those resolutions explicit representatives for homological classes. Finally, we explain how to "deform" the differential to handle the general case. For associative algebras, we recover a well known construction due to Anick. The other case we discuss in detail is that of operads, where we discover resolutions that haven't been known previously. We present various applications, including a proofs of Hoffbeck's PBW criterion, a proof of Koszulness for a class of operads coming from commutative algebras, and a homology computation for the operads of Batalin--Vilkovisky algebras and of Rota--Baxter algebras.

Vladimir Dotsenko; Anton Khoroshkin

154

Uncertainty Management for Spatial Data in Databases: Fuzzy Spatial Data Types  

E-Print Network (OSTI)

Uncertainty Management for Spatial Data in Databases: Fuzzy Spatial Data Types Markus Schneider an abstract, conceptual model of so­called fuzzy spatial data types (i.e., a fuzzy spatial algebra types called spatial data types (see [Sch97] for a survey) have been designed for modeling these spatial

Güting, Ralf Hartmut

155

Scales of temporal and spatial variability of midlatitude land surface temperature  

E-Print Network (OSTI)

high spatial resolution infrared satellite observation of LST is possible only during clearsky weather for developing a new approach to assimilation of satellite observed clearsky LST into weather analysis evaluated using data from satellite and land surface observations. We consider separately the timedependent

Vinnikov, Konstantin

156

Timpf, S. and A. U. Frank (1997). Using hierarchical spatial data structures for hierarchical spatial reasoning. Spatial Information  

E-Print Network (OSTI)

Timpf, S. and A. U. Frank (1997). Using hierarchical spatial data structures for hierarchical Science 1329: 69-83. Using Hierarchical Spatial Data Structures for Hierarchical Spatial Reasoning Sabine structures to improve efficiency in computing the correct result. An algorithm on hierarchical spatial data

Timpf, Sabine

157

Microanatomy at Cellular Resolution and Spatial Order of Physiological Differentiation in a Bacterial Biofilm  

Science Journals Connector (OSTI)

...the biofilm, we examined a flagellar motor-deficient deltamotA mutant. In contrast...our study will be a basis for numerous future studies. These will address the specific...The specimens were examined with an FEI Quanta 200 scanning electron microscope (FEI...

Diego O. Serra; Anja M. Richter; Gisela Klauck; Franziska Mika; Regine Hengge

2013-04-01T23:59:59.000Z

158

Mapping of North American methane emissions with high spatial resolution by inversion  

E-Print Network (OSTI)

, 2 Jet Propulsion Laboratory/California Institute of Technology, Pasadena, California, USA, 3 and biofuel burning. Wetlands are the largest natural source. The magnitude of global methane emissions

Jacob, Daniel J.

159

Investigating the effects of higher spatial resolution on benthic classification accuracy at Midway Atoll .  

E-Print Network (OSTI)

??Effective monitoring of coral reefs is important for ecological and economic reasons, and satellite remote sensing has been shown to be useful for mapping and… (more)

Hatcher, Ervin B.

2008-01-01T23:59:59.000Z

160

Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton  

Science Journals Connector (OSTI)

...ion mode (collision energy 30) with a neutral loss...Chapman, K., and Green, A. (2009). Bridging...composition of the unicellular green alga Chlamydomonas reinhardtii...profile Patrick J. Horn Current Position: Graduate student...UT-Austin and a research internship at 3M, I joined Kent...

Patrick J. Horn; Andrew R. Korte; Purnima B. Neogi; Ebony Love; Johannes Fuchs; Kerstin Strupat; Ljudmilla Borisjuk; Vladimir Shulaev; Young-Jin Lee; Kent D. Chapman

2012-02-14T23:59:59.000Z

Note: This page contains sample records for the topic "finer spatial resolution" 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

Automated approaches for extracting individual tree level forest information using high spatial resolution remotely sensed data  

E-Print Network (OSTI)

in an old-growth conifer forest. Food webs at the landscapelidar terrain model under a conifer forest canopy. Canadianconducted in a mixed-conifer forest at Angelo Coast Range

Lee, Jun Hak

2010-01-01T23:59:59.000Z

162

High Spatial Resolution Thermal Imaging of Multiple Section Semiconductor Lasers Ali Shakouri*  

E-Print Network (OSTI)

and peak wavelength characteristics of active optoelectronic devices. In this paper we describe how for optoelectronic devices such as laser sources, switching/routing elements, and detectors. This is especially true (TE) coolers. However since their integration with optoelectronic devices is difficult [1

163

Spatial Resolution for Processing Seismic Data: Type-2 Methods for Finding the Relevant Granular Structure  

E-Print Network (OSTI)

to guarantee that there are resources such as minerals at a certain location is to actually drill a borehole at large depths, or under water, or in very remote areas ­ in short, in the areas where drilling is very in earnest during the first half of the 20th century. The result was the discovery of many large relatively

Kreinovich, Vladik

164

Horizontal resolution ~5 m (stage dependent) Spatial chemical analysis of biologically active  

E-Print Network (OSTI)

clients Other Methods to Be Evaluated TOF-SIMS AFM-Raman Nano-DESI E-STEM X-ray and electron imaging (STORM, SIMS ) ~5 cm ~ 110 µm Substrate Biofilm Ultrasonic Signal 474.3683 827.9247 +MS, 0

165

High Resolution Optically Addressed Spatial Light Modulator based on ZnO Nanoparticles  

E-Print Network (OSTI)

temperatures. (d) Temporal current response with and without illumination. Samples are illuminated by 10 mW cm -2 of 365 nm light emitting diode with 6 V dc being applied throughout. Electrical characterization For conductivity measurement, two rectangular... of the corresponding dark/photo currents of the ITO-ZnO-ITO structures are carried out using Agilent 4156 together with a 365 nm light emitting diode light source of 2 mW cm-2. The conductivity, ? , of the sample is calculated as, dI LtV? ? (2) where, d...

Shrestha, Pawan Kumar; Chun, Young Tea; Chu, Daping

2015-01-01T23:59:59.000Z

166

Improved spatial resolution for reflection mode infrared microscopy Hans A. Bechtel,1  

E-Print Network (OSTI)

illumination of the secondary mirror, as is the case with transmission mode. The PSF of a Schwarzschild December 2009 Standard commercial infrared microscopes operating in reflection mode use a mirror to direct the reflected light from the sample to the detector. This mirror blocks about half of the incident light

Martin, Michael C.

167

High spatial resolution mid-infrared observations of the low-mass young star TW Hya  

E-Print Network (OSTI)

We want to improve knowledge of the structure of the inner few AU of the circumstellar disk around the nearby T Tauri star TW Hya. Earlier studies have suggested the existence of a large inner hole, possibly caused by interactions with a growing protoplanet. We used interferometric observations in the N-band obtained with the MIDI instrument on the Very Large Telescope Interferometer, together with 10 micron spectra recorded by the infrared satellite Spitzer. The fact that we were able to determine N-band correlated fluxes and visibilities for this comparatively faint source shows that MIR interferometry can be applied to a large number of low-mass young stellar objects. The MIR spectra obtained with Spitzer reveal emission lines from HI (6-5), HI (7-6), and [Ne II] and show that over 90% of the dust we see in this wavelength regime is amorphous. According to the correlated flux measured with MIDI, most of the crystalline material is in the inner, unresolved part of the disk, about 1 AU in radius. The visibilities exclude the existence of a very large (3-4 AU radius) inner hole in the circumstellar disk of TW Hya, which was required in earlier models. We propose instead a geometry of the inner disk where an inner hole still exists, but at a much reduced radius, with the transition from zero to full disk height between 0.5 and 0.8 AU, and with an optically thin distribution of dust inside. Such a model can comply with SED and MIR visibilities, as well as with visibility and extended emission observed in the NIR at 2 micron. If a massive planet was the reason for this inner hole, as has been speculated, its orbit would have to be closer to the star than 0.3 AU. Alternatively, we may be witnessing the end of the accretion phase and an early phase of an inward-out dispersal of the circumstellar disk.

Th. Ratzka; Ch. Leinert; Th. Henning; J. Bouwman; C. P. Dullemond; W. Jaffe

2007-07-02T23:59:59.000Z

168

High spatial resolution three-dimensional mapping of vegetation spectral dynamics using computer vision  

E-Print Network (OSTI)

Forestry Forest ecology Computer vision Unmanned aerial systems UAS Unmanned aerial vehicle UAV Forest-dimensional (3D) measurements of vegetation by remote sensing are advancing ecological research and environmental ecologically significant dynamics in canopy color at different heights and a structural shift upward in canopy

Ellis, Erle C.

169

Trends in Spatial Data Shashi Shekhar  

E-Print Network (OSTI)

Chapter 3 Trends in Spatial Data Mining Shashi Shekhar , Pusheng Zhang , Yan Huang , Ranga Raju, Minneapolis, MN 55455 Abstract: Spatial data mining is the process of discovering interesting and previously traditional numeric and categorical data due to the complexity of spatial data types, spatial relationships

Huang, Yan

170

High resolution x-ray and gamma ray imaging using diffraction lenses with mechanically bent crystals  

DOE Patents (OSTI)

A method for high spatial resolution imaging of a plurality of sources of x-ray and gamma-ray radiation is provided. High quality mechanically bent diffracting crystals of 0.1 mm radial width are used for focusing the radiation and directing the radiation to an array of detectors which is used for analyzing their addition to collect data as to the location of the source of radiation. A computer is used for converting the data to an image. The invention also provides for the use of a multi-component high resolution detector array and for narrow source and detector apertures.

Smither, Robert K. (Hinsdale, IL)

2008-12-23T23:59:59.000Z

171

Spatial Hierarchy and OLAP-Favored Search in Spatial Data Warehouse  

E-Print Network (OSTI)

Spatial Hierarchy and OLAP-Favored Search in Spatial Data Warehouse Fangyan Rao, Long Zhang, Xiu systems. With the increasing amount of spatial data stored in business database, how to utilize these spatial information to get insight into business data from the geo- spatial point of view is becoming

Song, Il-Yeol

172

Modeling longitudinal spatial periodontal data: A spatially-adaptive model with tools for specifying  

E-Print Network (OSTI)

Modeling longitudinal spatial periodontal data: A spatially-adaptive model with tools spatial periodontal data: A spatially-adaptive model with tools for specifying priors and checking fit with spatially-varying baseline smoothing parameters, and the rectangles along the horizontal axes represent

Reich, Brian J.

173

Integrated storage and querying of spatially varying data quality information in a relational spatial database  

E-Print Network (OSTI)

Integrated storage and querying of spatially varying data quality information in a relational Variation in Quality Keywords Spatial data quality; spatial database; relational database management system for storing and retrieving spatially varying data quality information in a relational spatial database. Rather

Duckham, Matt

174

Spatial Computers for Emergency Support  

Science Journals Connector (OSTI)

......the area, whereas OESS is a hybrid systemconsistingofmobile...mentioned above due to its static infrastructure, while OESS is considerably...such devices to share data. A grid-based structure is used to...framework. The size of the spatial grid used is 1000 1000 points......

Avgoustinos Filippoupolitis; Gokce Gorbil; Erol Gelenbe

2013-12-01T23:59:59.000Z

175

Wind Energy and Spatial Technology  

E-Print Network (OSTI)

2/3/2011 1 Wind Energy and Spatial Technology Lori Pelech Why Wind Energy? A clean, renewable 2,600 tons of carbon emissions annually ­ The economy · Approximately 85,000 wind energy workers (existing transmission lines)? #12;2/3/2011 3 US Energy Transmission Grid US Wind Map #12;2/3/2011 4

Schweik, Charles M.

176

Methods for evaluating spatial fields  

E-Print Network (OSTI)

other areas Other parameters (e.g., wind, cloud) Regional climate forecasts Satellite precipitation structure and features WRF model Stage II radar STAR Seminar Oct 2010 #12;5 Spatial fields have many flavors on the local circulation patterns." STAR Seminar Oct 2010 #12;Rife et al. 2004 STAR Seminar Oct 2010 #12

Kuligowski, Bob

177

Design of a scanning Josephson junction microscope for submicron-resolution magnetic imaging  

SciTech Connect

We describe a magnetic field scanning instrument designed to extend the spatial resolution of scanning superconducting quantum interference device microscopy into the submicron regime. This instrument, the scanning Josephson junction microscope, scans a single Josephson junction across the surface of a sample, detecting the local magnetic field by the modulation of the junction critical current. By using a submicron junction and a scanning tunneling microscope feedback system to maintain close proximity to the surface, magnetic field sensitivity of 10 {mu}G with a spatial resolution of 0.3 {mu}m should be attainable, opening up new opportunities for imaging vortex configurations and core structure in superconductors and magnetic domains in magnetic materials. {copyright} {ital 1999 American Institute of Physics.}

Plourde, B.L.; Van Harlingen, D.J. [Department of Physics, Science and Technology Center for Superconductivity, and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)] [Department of Physics, Science and Technology Center for Superconductivity, and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)

1999-11-01T23:59:59.000Z

178

Following a Structural Phase Transition in Real Time with Atomic Spatial  

NLE Websites -- All DOE Office Websites (Extended Search)

Following a Structural Phase Following a Structural Phase Transition in Real Time with Atmic Spatial Resolution Constructing atomic scale mechanisms for chemical, biological, and physical transformations of matter represents a critical goal for numerous scientific and technological challenges that face modern society. The natural length and time scale for atomic dynamics dictate that the scientific tools needed to construct these mechanisms possess Ångström (Å) spatial resolution with femtosecond (fs) temporal resolution. Ultrafast x-ray pulses provide the necessary spatial and temporal resolution, but generating sources intense enough for detailed structural studies has been a significant challenge. The Sub-Picosecond Pulse Source (SPPS) represents the first utilization of a linear electron accelerator to generate fs duration pulses of Å wavelength light for studying structural dynamics. The per pulse fluence at the SPPS exceeds that of all previous ultrafast hard x-ray sources by roughly two orders of magnitude,[1] allowing structural transformations to be investigated with unprecedented dynamical detail.

179

A new constraint-based spatial clustering algorithm based on spatial adjacent relation for GML data  

Science Journals Connector (OSTI)

Spatial data mining (SDM) is the discovery of interesting relationships and characteristics that may exist implicitly in spatial databases. Many methods on spatial clustering have been proposed, but only few of them considered the constraints like road, ...

V. Pattabiraman; R. Nedunchezhian

2012-01-01T23:59:59.000Z

180

Alternative Dispute Resolution | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Alternative Dispute Resolution | National Nuclear Security Administration Alternative Dispute Resolution | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Alternative Dispute Resolution Home > About Us > Our Operations > Management and Budget > Office of Civil Rights > Alternative Dispute Resolution Alternative Dispute Resolution The NNSA Alternative Dispute Resolution (ADR) Program is designed as an

Note: This page contains sample records for the topic "finer spatial resolution" 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

Methods for spectral image analysis by exploiting spatial simplicity  

DOE Patents (OSTI)

Several full-spectrum imaging techniques have been introduced in recent years that promise to provide rapid and comprehensive chemical characterization of complex samples. One of the remaining obstacles to adopting these techniques for routine use is the difficulty of reducing the vast quantities of raw spectral data to meaningful chemical information. Multivariate factor analysis techniques, such as Principal Component Analysis and Alternating Least Squares-based Multivariate Curve Resolution, have proven effective for extracting the essential chemical information from high dimensional spectral image data sets into a limited number of components that describe the spectral characteristics and spatial distributions of the chemical species comprising the sample. There are many cases, however, in which those constraints are not effective and where alternative approaches may provide new analytical insights. For many cases of practical importance, imaged samples are "simple" in the sense that they consist of relatively discrete chemical phases. That is, at any given location, only one or a few of the chemical species comprising the entire sample have non-zero concentrations. The methods of spectral image analysis of the present invention exploit this simplicity in the spatial domain to make the resulting factor models more realistic. Therefore, more physically accurate and interpretable spectral and abundance components can be extracted from spectral images that have spatially simple structure.

Keenan, Michael R. (Albuquerque, NM)

2010-11-23T23:59:59.000Z

182

PMCO: Issue Resolution | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PMCO: Issue Resolution PMCO: Issue Resolution PMCO: Issue Resolution The expertise available within the Project Management Coordination Office (PMCO) team is regularly called upon to resolve issues that cut across technology offices and require prompt resolution. PMCO prioritizes these actions to ensure they are successfully brought to closure. Examples include: Management of Congressionally Directed Projects (CDPs) and CDP Portfolio Oversight; improving Financial Assistance Closeout performance; and developing and executing the application receipt, review and selection process for 48C tax credit requests. Responsibilities Resolves Office of Energy Efficiency and Renewable Energy (EERE) issues in an efficient and expedited manner Mobilizes small and nimble teams to address specific problem sets

183

Wind: wind power density GIS data at 50m above ground and 1km resolution  

Open Energy Info (EERE)

Cuba from NREL Cuba from NREL Dataset Summary Description (Abstract): Raster GIS data, exported as BIL file, 50 m wind power density for Cuba. Note: BIL files can be converted to raster data in ArcInfo using the IMAGEGRID command. (Purpose): To provide information on the wind resource potential in Cuba. Values range from 0 to 547. (Supplemental Information): ***** Spatial Reference Information (Beg) *****Projection ParametersCoordinate System:Projection CylindricalZunits W/m2Units MetersSpheroid: SphereParametersProjection Type 1Longitude of central meridian: -79 32 40.2Latitude of standard parallel: 21 33 21.6Spatial InformationRaster:Number of Columns: 1360Number of Rows: 628Pixel Resolution (m): 1000Data Type: integer***** Spatial Reference Information (End) *****

184

Wind: wind power density GIS data at 50m above ground and 1km resolution  

Open Energy Info (EERE)

Central America from NREL Central America from NREL Dataset Summary Description (Abstract): Raster GIS data, 50 m wind power density for Central America (Purpose): To provide information on the wind resource potential within the following countries in Central America: Belize, El Salvador, Guatemala, Honduras, and Nicaragua. (Supplemental Information): ***** Spatial Reference Information (Beg) *****Projection ParametersCoordinate System:Lambert_Azimuthal_Equal_AreaFalse_Easting: 0.000000False_Northing: 0.000000Central_Meridian: -87.450000Latitude_Of_Origin: 13.300000GCS_Sphere_ARC_INFODatum: D_Sphere_ARC_INFOPrime Meridian: 0Units: MetersSpatial InformationRaster:Number of Columns: 1374Number of Rows: 1143Pixel Resolution (m): 1000Data Type: integer***** Spatial Reference Information (End) *****

185

Spatial Frequency Filtering Using Nondelineated Thin Films  

Science Journals Connector (OSTI)

We present a new approach for achieving spatial frequency filtering in the analog domain. Our device, the Thin Film Spatial Filter, is a hybrid structure which combines the strengths of analog VLSI technology with the simplicity of a continuous sheet ...

J. Mcelvain; J. Langan; A. J. Heeger

1997-10-01T23:59:59.000Z

186

Solar: annual average direct normal (DNI) map at 40km resolution for  

Open Energy Info (EERE)

map at 40km resolution for map at 40km resolution for Central America from NREL Dataset Summary Description (Abstract): A map depicting model estimates of monthly average daily total radiation using inputs derived from satellite and surface observations of cloud cover, aerosol optical depth, precipitable water vapor, albedo, atmospheric pressure and ozone sampled at a 40km resolution. (Purpose): A visual depiction of solar energy resource for concentrating solar power systems. Source NREL Date Released December 11th, 2003 (11 years ago) Date Updated October 30th, 2007 (7 years ago) Keywords Central America direct normal DNI map NREL solar SWERA UNEP Data application/pdf icon Download Map (pdf, 67.1 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency

187

The uTPC Method: Improving the Position Resolution of Neutron Detectors Based on MPGDs  

E-Print Network (OSTI)

Due to the Helium-3 crisis, alternatives to the standard neutron detection techniques are becoming urgent. In addition, the instruments of the European Spallation Source (ESS) require advances in the state of the art of neutron detection. The instruments need detectors with excellent neutron detection efficiency, high-rate capabilities and unprecedented spatial resolution. The Macromolecular Crystallography instrument (NMX) requires a position resolution in the order of 200 um over a wide angular range of incoming neutrons. Solid converters in combination with Micro Pattern Gaseous Detectors (MPGDs) are proposed to meet the new requirements. Charged particles rising from the neutron capture have usually ranges larger than several millimetres in gas. This is apparently in contrast with the requirements for the position resolution. In this paper, we present an analysis technique, new in the field of neutron detection, based on the Time Projection Chamber (TPC) concept. Using a standard Single-GEM with the catho...

Pfeiffer, Dorothea; Birch, Jens; Hall-Wilton, Richard; Höglund, Carina; Hultman, Lars; Iakovidis, George; Oliveri, Eraldo; Oksanen, Esko; Ropelewski, Leszek; Thuiner, Patrik

2015-01-01T23:59:59.000Z

188

Ultrahigh resolution soft x-ray emission spectrometer at BL07LSU in SPring-8  

SciTech Connect

An extremely high resolution flat field type slit less soft x-ray emission spectrometer has been designed and constructed for the long undulator beamline BL07LSU in SPring-8. By optimizing the ruling parameters of two cylindrical gratings, a high energy resolution {Delta}E < 100 meV and/or an E/{Delta}E{approx} 10 000 are expected for the energy range of 350 eV - 750 eV taking into account the broadening by the spatial resolution (25 {mu}m) of a CCD detector. A coma-free operation mode proposed by Strocov et al., is also applied to eliminate both defocus and coma aberrations. The spectrometer demonstrated experimentally that E/{Delta}E= 10 050 and 8046 for N 1s (402.1 eV) and Mn 2p (641.8 eV) edges, respectively.

Harada, Yoshihisa [Department of Applied Chemistry, Graduate School of Engineering, University of Tokyo, Hongo, Bunkyo, Tokyo 113-8656 (Japan); Synchrotron Radiation Research Organization, University of Tokyo, Koto, Shingu-cho, Tatsuno, Hyogo 679-5165 (Japan); RIKEN/SPring-8, Sayo-cho, Sayo, Hyogo 679-5148 (Japan); CREST, Japan Science and Technology (JST), Kawaguchi, Saitama 332-0012 (Japan); Kobayashi, Masaki [Department of Applied Chemistry, Graduate School of Engineering, University of Tokyo, Hongo, Bunkyo, Tokyo 113-8656 (Japan); Synchrotron Radiation Research Organization, University of Tokyo, Koto, Shingu-cho, Tatsuno, Hyogo 679-5165 (Japan); RIKEN/SPring-8, Sayo-cho, Sayo, Hyogo 679-5148 (Japan); Niwa, Hideharu [Department of Applied Chemistry, Graduate School of Engineering, University of Tokyo, Hongo, Bunkyo, Tokyo 113-8656 (Japan); Synchrotron Radiation Research Organization, University of Tokyo, Koto, Shingu-cho, Tatsuno, Hyogo 679-5165 (Japan); Senba, Yasunori; Ohashi, Haruhiko [Japan Synchrotron Radiation Research Institute (JASRI), Koto, Sayo-cho, Sayo, Hyogo 679-5198 (Japan); Tokushima, Takashi; Horikawa, Yuka [RIKEN/SPring-8, Sayo-cho, Sayo, Hyogo 679-5148 (Japan); Shin, Shik [RIKEN/SPring-8, Sayo-cho, Sayo, Hyogo 679-5148 (Japan); CREST, Japan Science and Technology (JST), Kawaguchi, Saitama 332-0012 (Japan); Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581 (Japan); Oshima, Masaharu [Department of Applied Chemistry, Graduate School of Engineering, University of Tokyo, Hongo, Bunkyo, Tokyo 113-8656 (Japan); Synchrotron Radiation Research Organization, University of Tokyo, Koto, Shingu-cho, Tatsuno, Hyogo 679-5165 (Japan); CREST, Japan Science and Technology (JST), Kawaguchi, Saitama 332-0012 (Japan)

2012-01-15T23:59:59.000Z

189

Simulation of Spatial P system models  

Science Journals Connector (OSTI)

Spatial P systems are an extension of the P systems formalism in which objects and membranes are embedded into a two-dimensional discrete space. Spatial P systems are characterised by the distinction between ordinary objects and mutually exclusive objects, ... Keywords: Membrane computing, Simulation algorithms, Spatiality

Roberto Barbuti, Andrea Maggiolo-Schettini, Paolo Milazzo, Giovanni Pardini

2014-04-01T23:59:59.000Z

190

Modeling Spatially Correlated Data in Sensor Networks  

E-Print Network (OSTI)

Modeling Spatially Correlated Data in Sensor Networks APOORVA JINDAL and KONSTANTINOS PSOUNIS of spatially correlated sensor network data. The proposed model is Markovian in nature and can capture on the degree of spatial correlation in data, under real and synthetic traces. The real traces are obtained from

191

Objective Bayesian Analysis of Spatially Correlated Data  

E-Print Network (OSTI)

Objective Bayesian Analysis of Spatially Correlated Data James O. Berger a , Victor De Oliveira b the reference prior is improper. An illustration is given using a spatial data set of topographic elevations #12;elds are powerful probabilistic tools for modeling spatial data and making inference about

West, Mike

192

SPATIAL DATA MINING IMPLEMENTATION Alternatives and perfermances  

E-Print Network (OSTI)

SPATIAL DATA MINING IMPLEMENTATION Alternatives and perfermances NADJIM CHELGHOUM, KARINE ZEITOUNI Abstract: Spatial data mining requires the analysis of the interactions in space. These interactions can be materialized using distance tables, reducing spatial data mining to multi-table analysis. However, conventional

Zeitouni, Karine

193

Chapter 13 Geovisualization 179 Spatial Data Analysis  

E-Print Network (OSTI)

Chapter 13 Geovisualization 179 Spatial Data Analysis OVERVIEW This chapter is the first in a set data analysis and tests to determine whether a method is spatial. Techniques for detecting geographic, because they can be applied to data arrayed in any space, not only geographic space. Spatial

Wright, Dawn Jeannine

194

Spatial Data Authentication Using Mathematical Visualization  

E-Print Network (OSTI)

Spatial Data Authentication Using Mathematical Visualization Vert, G., Harris, F., Nasser, S. Dept has become an increasingly compromised method to transmit any type of data including spatial data. Due to the criticality of spatial data in decision making processes that range from military targeting to urban planning

Harris Jr., Frederick C.

195

High resolution scintillation detector with semiconductor readout  

DOE Patents (OSTI)

A novel high resolution scintillation detector array for use in radiation imaging such as high resolution Positron Emission Tomography (PET) which comprises one or more parallelepiped crystals with at least one long surface of each crystal being in intimate contact with a semiconductor photodetector such that photons generated within each crystal by gamma radiation passing therethrough is detected by the photodetector paired therewith.

Levin, Craig S. (Santa Monica, CA); Hoffman, Edward J. (Los Angeles, CA)

2000-01-01T23:59:59.000Z

196

Tracking of Transgene Expression in Soybean using Robotics and GFP John James Finer  

E-Print Network (OSTI)

of Horticulture and Crop Science, OARDC The Ohio State University, 1680 Madison Ave, Wooster, OH 44691, USA Tel illumination of the subject material with the proper wavelength of light and use of GFP-specific filters but

Finer, John J.

197

Conflict Resolution Day | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Conflict Resolution Day Conflict Resolution Day Conflict Resolution Day October 18, 2012 10:00AM EDT All events in the Department of Energy's Forrestal Main Auditorium, Germantown employees can watch a VTC broadcast in Germantown A-117 and Cloverleaf 2071. Conflict Resolution Day takes a look at mediation, conciliation, negotiation, arbitration, the ombudsman, and facilitation to resolve conflict in the workplace. Employees and contractors are invited to join for any/all of the following events: 10:00am - 10:30am Cookies, Coffee, and Conversation 10:30am - 11:30am Self-Mediation presentation 11:30am - 12:00pm De-Stressing in a Stressful Environment presentation 12:00pm - 1:00pm Informal Information Session 1:00pm - 2:00pm Ergonomics IL Creations Forrestal Cafetaria will be offering a Conflict Resolution Day

198

Resolute Marine Energy Inc | Open Energy Information  

Open Energy Info (EERE)

Resolute Marine Energy Inc Resolute Marine Energy Inc Jump to: navigation, search Name Resolute Marine Energy Inc Address 3 Post Office Square 3rd floor Place Massachusetts Zip 02109-3905 Country United States Sector Marine and Hydrokinetic Product Resolute is a wave-power technology developer operating in Massachusetts. Year founded 2007 Number of employees 12 Phone number 917-626-6790 Website http://www.resolutemarine.com References Resolute Marine Energy LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This company is listed in the Marine and Hydrokinetic Technology Database. This company is involved in the following MHK Projects: Ocean Trials Ver 2 SurgeWEC Ocean Testing 1 This company is involved in the following MHK Technologies: AirWEC SurgeWEC

199

JOIDES Resolution Ship Security Plan The JOIDES Resolution is operating under the International Ship &  

E-Print Network (OSTI)

JOIDES Resolution Ship Security Plan The JOIDES Resolution is operating under the International or the Ship Security Plan is not followed. The JOIDES Resolution's Ship Security Plan has been approved by its and personnel will be searched as required in accordance with the ISPS code, the Ship Security Plan

200

Spatial Data Mining, Michael May, Fraunhofer AIS 1 Spatial Data Mining for Customer  

E-Print Network (OSTI)

Spatial Data Mining, Michael May, Fraunhofer AIS 1 Spatial Data Mining for Customer Segmentation Intelligente Systeme #12;Spatial Data Mining, Michael May, Fraunhofer AIS 2 Introduction: a classic example? A good representation is the key to solving a problem Disease cluster #12;Spatial Data Mining, Michael

Morik, Katharina

Note: This page contains sample records for the topic "finer spatial resolution" 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

Spatial coherence effect on layer thickness determination in narrowband full-field optical coherence tomography  

SciTech Connect

Longitudinal spatial coherence (LSC) is determined by the spatial frequency content of an optical beam. The use of lenses with a high numerical aperture (NA) in full-field optical coherence tomography and a narrowband light source makes the LSC length much shorter than the temporal coherence length, hence suggesting that high-resolution 3D images of biological and multilayered samples can be obtained based on the low LSC. A simplified model is derived, supported by experimental results, which describes the expected interference output signal of multilayered samples when high-NA lenses are used together with a narrowband light source. An expression for the correction factor for the layer thickness determination is found valid for high-NA objectives. Additionally, the method was applied to a strongly scattering layer, demonstrating the potential of this method for high-resolution imaging of scattering media.

Safrani, Avner; Abdulhalim, Ibrahim

2011-06-20T23:59:59.000Z

202

Transportation Issues and Resolutions Compilation of Laboratory  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Transportation Issues and Resolutions Compilation of Laboratory Transportation Issues and Resolutions Compilation of Laboratory Transportation Work Package Reports Transportation Issues and Resolutions Compilation of Laboratory Transportation Work Package Reports The Transportation Team identified the retrievability and subcriticality safety functions to be of primary importance to the transportation of UNF after extended storage and to transportation of high burnup fuel. The tasks performed and described herein address issues related to retrievability and subcriticality; integrity of cladding (embrittled, high burnup cladding, loads applied to cladding during transport), criticality analyses of failed UNF within transport packages, moderator exclusion concepts, stabilization of cladding with canisters for criticality control;

203

Environmental and Pollution Spatial Data Classification with Support Vector Machines  

E-Print Network (OSTI)

Environmental and Pollution Spatial Data Classification with Support Vector Machines and pollution spatial data analysis and modeling. The main attention is paid to classification of spatially. Introduction Environmental and pollution data are usually spatially distributed and time dependent. At present

Gilardi, Nicolas

204

3-Dimensional Imaging At Nanometer Resolutions  

NLE Websites -- All DOE Office Websites (Extended Search)

for reducing the background radiation from other image planes to levels suitable for single-molecule detection and spatial location, are described. U.S. Patent No.: 7,675,045...

205

CO (3 – 2) HIGH-RESOLUTION SURVEY OF THE GALACTIC PLANE: R1  

SciTech Connect

We present the first release (R1) of data from the CO High-Resolution Survey (COHRS), which maps a strip of the inner Galactic plane in {sup 12}CO (J = 3 ? 2). The data are taken using the Heterodyne Array Receiver Programme on the James Clerk Maxwell Telescope (JCMT) in Hawaii, which has a 14 arcsec angular resolution at this frequency. When complete, this survey will cover |b| ? 0.°5 between 10° < l < 65°. This first release covers |b| ? 0.°5 between 10.°25 < l < 17.°5 and 50.°25 < l < 55.°25, and |b| ? 0.°25 between 17.°5 < l < 50.°25. The data are smoothed to a velocity resolution of 1 km s{sup –1}, a spatial resolution of 16 arcsec and achieve a mean rms of ?1 K. COHRS data are available to the community online at http://dx.doi.org/10.11570/13.0002. In this paper we describe the data acquisition and reduction techniques used and present integrated intensity images and longitude-velocity maps. We also discuss the noise characteristics of the data. The high resolution is a powerful tool for morphological studies of bubbles and filaments while the velocity information shows the spiral arms and outflows. These data are intended to complement both existing and upcoming surveys, e.g., the Bolocam Galactic Plane Survey (BGPS), ATLASGAL, the Herschel Galactic Plane Survey (Hi-GAL) and the JCMT Galactic Plane Survey with SCUBA-2 (JPS)

Dempsey, J. T.; Thomas, H. S.; Currie, M. J., E-mail: j.dempsey@jach.hawaii.edu, E-mail: h.thomas@jach.hawaii.edu, E-mail: m.currie@jach.hawaii.edu [Joint Astronomy Centre, 660 N. Aohoku Place, Hilo, HI 96720 (United States)

2013-11-01T23:59:59.000Z

206

High-resolution Bent-crystal Spectrometer for the Ultra-soft X-ray Region  

DOE R&D Accomplishments (OSTI)

A multichannel vacuum Brag-crystal spectrometer has been developed for high-resolution measurements of the line emission from tokamak plasmas in the wavelength region between 4 and 25 angstrom. The spectrometer employs a bent crystal in Johann geometry and a microchannel-plate intensified photodiode array. The instrument is capable of measuring high-resolution spectra (lambda/..delta..lambda approx. 3000) with fast time resolution (4 msec per spectrum) and good spatial resolution (3 cm). The spectral bandwidth is ..delta..lambda/lambda{sub 0} = 8 angstrom. A simple tilt mechanism allows access to different wavelength intervals. In order to illustrate the utility of the new spectrometer, time- and space-resolved measurements of the n = 3 to n = 2 spectrum of selenium from the Princeton Large Torus tokamak plasmas are presented. The data are used to determine the plasma transport parameters and to infer the radial distribution of fluorinelike, neonlike, and sodiumlike ions of selenium in the plasma. The new ultra-soft x-ray spectrometer has thus enabled us to demonstrate the utility of high-resolution L-shell spectroscopy of neonlike ions as a fusion diagnostic.

Beiersdorfer, P.; von Goeler, S.; Bitter, M.; Hill, K. W.; Hulse, R. A.; Walling, R. S.

1988-10-00T23:59:59.000Z

207

NREL GIS Data: Alaska Low Resolution Concentrating Solar Power Resource |  

Open Energy Info (EERE)

Alaska Low Resolution Concentrating Solar Power Resource Alaska Low Resolution Concentrating Solar Power Resource Dataset Summary Description Abstract: Monthly and annual average solar resource potential for Alaska. Purpose: Provide information on the solar resource potential for Alaska. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal equal to the latitude of the collector location. Supplemental_Information: This data provides monthly average and annual average daily total solar resource averaged over surface cells of approximatley 40 km by 40 km in size. This data was developed from the Climatological Solar Radiation (CSR) Model. The CSR model was developed by the National Renewable Energy Laboratory for the U.S. Department of Energy. Specific information about this model can be found in Maxwell, George and Wilcox (1998) and George and Maxwell (1999). This model uses information on cloud cover, atmostpheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. The cloud cover data used as input to the CSR model are an 7-year histogram (1985-1991) of monthly average cloud fraction provided for grid cells of approximately 40km x 40km in size. Thus, the spatial resolution of the CSR model output is defined by this database. The data are obtained from the National Climatic Data Center in Ashville, North Carolina, and were developed from the U.S. Air Force Real Time Nephanalysis (RTNEPH) program. Atmospheric water vapor, trace gases, and aerosols are derived from a variety of sources. The procedures for converting the collector at latitude tilt are described in Marion and Wilcox (1994). Where possible, existing ground measurement stations are used to validate the data. Nevertheless, there is uncertainty associated with the meterological input to the model, since some of the input parameters are not avalible at a 40km resolution. As a result, it is believed that the modeled values are accurate to approximately 10% of a true measured value within the grid cell. Due to terrain effects and other micoclimate influences, the local cloud cover can vary significantly even within a single grid cell. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain. Units are in watt hours.

208

NREL GIS Data: Continental United States High Resolution Concentrating  

Open Energy Info (EERE)

High Resolution Concentrating High Resolution Concentrating Solar Power Dataset Summary Description Abstract: Monthly and annual average solar resource potential for the lower 48 states of the United States of America. Purpose: Provide information on the solar resource potential for the for the lower 48 states of the United States of America. Supplemental_Information: This data provides monthly average and annual average daily total solar resource averaged over surface cells of approximatley 40 km by 40 km in size. This data was developed from the Climatological Solar Radiation (CSR) Model. The CSR model was developed by the National Renewable Energy Laboratory for the U.S. Department of Energy. Specific information about this model can be found in Maxwell, George and Wilcox (1998) and George and Maxwell (1999). This model uses information on cloud cover, atmostpheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. The cloud cover data used as input to the CSR model are an 7-year histogram (1985-1991) of monthly average cloud fraction provided for grid cells of approximately 40km x 40km in size. Thus, the spatial resolution of the CSR model output is defined by this database. The data are obtained from the National Climatic Data Center in Ashville, North Carolina, and were developed from the U.S. Air Force Real Time Nephanalysis (RTNEPH) program. Atmospheric water vapor, trace gases, and aerosols are derived from a variety of sources. The procedures for converting the collector at latitude tilt are described in Marion and Wilcox (1994). Where possible, existing ground measurement stations are used to validate the data. Nevertheless, there is uncertainty associated with the meterological input to the model, since some of the input parameters are not avalible at a 40km resolution. As a result, it is believed that the modeled values are accurate to approximately 10% of a true measured value within the grid cell. Due to terrain effects and other micoclimate influences, the local cloud cover can vary significantly even within a single grid cell. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

209

NREL GIS Data: Hawaii Low Resolution Concentrating Solar Power Resource |  

Open Energy Info (EERE)

Low Resolution Concentrating Solar Power Resource Low Resolution Concentrating Solar Power Resource Dataset Summary Description Abstract: Monthly and annual average solar resource potential for Hawaii. Purpose: Provide information on the solar resource potential for Hawaii. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal equal to the latitude of the collector location. Supplemental_Information: This data provides monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. This data was developed from the Climatological Solar Radiation (CSR) Model. The CSR model was developed by the National Renewable Energy Laboratory for the U.S. Department of Energy. Specific information about this model can be found in Maxwell, George and Wilcox (1998) and George and Maxwell (1999). This model uses information on cloud cover, atmostpheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. The cloud cover data used as input to the CSR model are an 7-year histogram (1985-1991) of monthly average cloud fraction provided for grid cells of approximately 40km x 40km in size. Thus, the spatial resolution of the CSR model output is defined by this database. The data are obtained from the National Climatic Data Center in Ashville, North Carolina, and were developed from the U.S. Air Force Real Time Nephanalysis (RTNEPH) program. Atmospheric water vapor, trace gases, and aerosols are derived from a variety of sources. The procedures for converting the collector at latitude tilt are described in Marion and Wilcox (1994). Where possible, existing ground measurement stations are used to validate the data. Nevertheless, there is uncertainty associated with the meterological input to the model, since some of the input parameters are not avalible at a 40km resolution. As a result, it is believed that the modeled values are accurate to approximately 10% of a true measured value within the grid cell. Due to terrain effects and other micoclimate influences, the local cloud cover can vary significantly even within a single grid cell. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

210

Environmental Conflict Resolution | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Environmental Environmental Conflict Resolution Environmental Conflict Resolution In November 2005, the Council on Environmental Quality (CEQ) and the Office of Management and Budget (OMB) jointly signed a memorandum directing Federal agencies to seek to increase the effective use of environmental conflict resolution (ECR) and collaborative problem solving (see http://www.whitehouse.gov/). The Department of Energy defines ECR as an ADR process which may include the use of a neutral third party, such as a mediator or facilitator to assist in the prevention or resolution of environmental disputes. ECR may also include the use of other collaborative processes (that may not necessarily use a neutral third party) to prevent or resolve environmental disputes. The memorandum also

211

Alternative Dispute Resolution Terms | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Alternative Dispute Resolution Terms Alternative Dispute Resolution Terms Alternative Dispute Resolution Terms Dispute Systems Design Dispute systems design is a process for assisting an organization to develop a structure for handling a series of similar recurring or anticipated disputes (e.g., environmental enforcement cases or EEO complaints within a federal agency) more effectively. Facilitation Facilitation is a collaborative process in which a neutral seeks to assist a group of individuals or other parties to discuss constructively a number of complex, potentially controversial issues. The neutral in a facilitation process (the "facilitator") plays a less active role than a mediator and, unlike a mediator, does not see "resolution" of a conflict as a goal of his or her work.

212

Resolution enhancement of lung 4D-CT data using multiscale interphase iterative nonlocal means  

SciTech Connect

Purpose: Four-dimensional computer tomography (4D-CT) has been widely used in lung cancer radiotherapy due to its capability in providing important tumor motion information. However, the prolonged scanning duration required by 4D-CT causes considerable increase in radiation dose. To minimize the radiation-related health risk, radiation dose is often reduced at the expense of interslice spatial resolution. However, inadequate resolution in 4D-CT causes artifacts and increases uncertainty in tumor localization, which eventually results in extra damages of healthy tissues during radiotherapy. In this paper, the authors propose a novel postprocessing algorithm to enhance the resolution of lung 4D-CT data. Methods: The authors' premise is that anatomical information missing in one phase can be recovered from the complementary information embedded in other phases. The authors employ a patch-based mechanism to propagate information across phases for the reconstruction of intermediate slices in the longitudinal direction, where resolution is normally the lowest. Specifically, the structurally matching and spatially nearby patches are combined for reconstruction of each patch. For greater sensitivity to anatomical details, the authors employ a quad-tree technique to adaptively partition the image for more fine-grained refinement. The authors further devise an iterative strategy for significant enhancement of anatomical details. Results: The authors evaluated their algorithm using a publicly available lung data that consist of 10 4D-CT cases. The authors' algorithm gives very promising results with significantly enhanced image structures and much less artifacts. Quantitative analysis shows that the authors' algorithm increases peak signal-to-noise ratio by 3-4 dB and the structural similarity index by 3%-5% when compared with the standard interpolation-based algorithms. Conclusions: The authors have developed a new algorithm to improve the resolution of 4D-CT. It outperforms the conventional interpolation-based approaches by producing images with the markedly improved structural clarity and greatly reduced artifacts.

Zhang Yu [School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China and Department of Radiology and BRIC, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Yap, Pew-Thian; Wu Guorong [Department of Radiology and BRIC, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Feng Qianjin; Chen Wufan [School of Biomedical Engineering, Southern Medical University, Guangzhou 510515 (China); Lian Jun [Department of Radiation Oncology, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Shen Dinggang [Department of Radiology and BRIC, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Department of Brain and Cognitive Engineering, Korea University, Seoul 136-713 (Korea, Republic of)

2013-05-15T23:59:59.000Z

213

Atomic resolution images of graphite in air  

SciTech Connect

One sample used for proof of operation for atomic resolution in STM is highly oriented pyrolytic graphite (HOPG). This sample has been imaged with many different STM`s obtaining similar results. Atomic resolution images of HOPG have now been obtained using an STM designed and built at the Precision Engineering Center. This paper discusses the theoretical predictions and experimental results obtained in imaging of HOPG.

Grigg, D.A.; Shedd, G.M.; Griffis, D.; Russell, P.E.

1988-12-01T23:59:59.000Z

214

Nonparametric methods of assessing spatial isotropy  

E-Print Network (OSTI)

processes and spatial point processes. 1.1 Quantitative Spatial Processes Quantitative spatial statistics is often originally associated with geostatistics, where Math- eron (1963) developed tools to predict ore reserves in a region. Geostatistics emerged... in the early 1980s and has seen rapid growth over the past twenty years. Successful appli- cations abound beyond geostatistics in, for example, rainfall data (Ord and Rees 1979), groundwater research (Myers et al. 1982), ozone exposure study (Carroll et al...

Guan, Yong Tao

2004-11-15T23:59:59.000Z

215

1 Overview of spatial data problems 1 1.1 Introduction to spatial data and models 1  

E-Print Network (OSTI)

Contents Preface xv 1 Overview of spatial data problems 1 1.1 Introduction to spatial data for areal data 70 3.1.1 Measures of spatial association 71 3.1.2 Spatial smoothers 75 3.2 Brook's Lemma 125 5 Hierarchical modeling for univariate spatial data 129 5.1 Stationary spatial process models 129

Carlin, Bradley P.

216

Scaling of EPR spectral-spatial images with size of sample: Images of a sample greater than 5 cm in linear dimension  

SciTech Connect

The authors have obtained spectral-spatial EPR images of a phantom significantly larger than those previously obtained. Images of a homogeneous phantom 4.2 cm in diameter and 6.5 cm in length with B{sub 1} equivalent to that used for smaller samples give a similar linewidth resolution both with linewidth population distributions of width 0.1 {mu}T. Spatial resolution appeared to have modest degradation. Images of the large homogeneous phantom provide maps of the magnetic field of a partially shimmed magnet.

Ahn, Kang-Hyun; Subramanian, V. S.; Halpern, Howard J. [Department of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois 60637 and Center for EPR Imaging in Vivo Physiology, University of Chicago, Chicago, Illinois 60637 (United States)

2007-12-15T23:59:59.000Z

217

The performance of Lagrangian perturbation schemes at high resolution  

E-Print Network (OSTI)

We present high--spatial resolution studies of the density field as predicted by Lagrangian perturbation approximations up to the third order. The first--order approximation is equivalent to the ``Zel'dovich approximation'' for the type of initial data analyzed. The study is performed for two simple models which allow studying of typical features of the clustering process in the early non--linear regime. We calculate the initial perturbation potentials as solutions of Poisson equations algebraically, and automate this calculation for a given initial random density field. The presented models may also be useful for other questions addressed to Lagrangian perturbation solutions and for the comparison of different approximation schemes. In an accompanying paper we investigate a detailed comparison with various N--body integrators using these models (Karakatsanis \\& Buchert 1995). Results of the present paper include the following: 1. The collapse is accelerated significantly by the higher--order corrections confirming previous results by Moutarde \\etal (1991); 2. the spatial structure of the density patterns predicted by the ``Zel'dovich approximation'' differs much from those predicted by the second-- and third--order Lagrangian approximations; 3. Second--order effects amount to internal substructures such as ``second generation'' --pancakes, --filaments and --clusters, as are also observed in N--body simulations; 4. The third--order effect gives rise to substructuring of the secondary mass--shells. The hierarchy of shell--crossing singularities that form features small high--density clumps at the intersections of caustics which we interprete as gravitational fragmentation.

Thomas Buchert; Georgios Karakatsanis; Robert Klaffl; Peter Schiller

1995-10-25T23:59:59.000Z

218

A High Resolution Monolithic Crystal, DOI, MR Compatible, PET Detector  

SciTech Connect

The principle objective of this proposal is to develop a positron emission tomography (PET) detector with depth-of-interaction (DOI) positioning capability that will achieve state of the art spatial resolution and sensitivity performance for small animal PET imaging. When arranged in a ring or box detector geometry, the proposed detector module will support <1 mm3 image resolution and >15% absolute detection efficiency. The detector will also be compatible with operation in a MR scanner to support simultaneous multi-modality imaging. The detector design will utilize a thick, monolithic crystal scintillator readout by a two-dimensional array of silicon photomultiplier (SiPM) devices using a novel sensor on the entrance surface (SES) design. Our hypothesis is that our single-ended readout SES design will provide an effective DOI positioning performance equivalent to more expensive dual-ended readout techniques and at a significantly lower cost. Our monolithic crystal design will also lead to a significantly lower cost system. It is our goal to design a detector with state of the art performance but at a price point that is affordable so the technology can be disseminated to many laboratories. A second hypothesis is that using SiPM arrays, the detector will be able to operate in a MR scanner without any degradation in performance to support simultaneous PET/MR imaging. Having a co-registered MR image will assist in radiotracer localization and may also be used for partial volume corrections to improve radiotracer uptake quantitation. The far reaching goal of this research is to develop technology for medical research that will lead to improvements in human health care.

Robert S Miyaoka

2012-03-06T23:59:59.000Z

219

Tomographic resolution without singular value decomposition James G. Berryman  

E-Print Network (OSTI)

Tomographic resolution without singular value decomposition James G. Berryman Lawrence Livermore an extensive discussion of resolution in seismic inverse problems --- Evans and Achauer 9 state

220

Ultra-High Resolution Electron Microscopy for Catalyst Characterizatio...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ultra-High Resolution Electron Microscopy for Catalyst Characterization Ultra-High Resolution Electron Microscopy for Catalyst Characterization 2011 DOE Hydrogen and Fuel Cells...

Note: This page contains sample records for the topic "finer spatial resolution" 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

Ultra-high Resolution Electron Microscopy for Catalyst Characterizatio...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

high Resolution Electron Microscopy for Catalyst Characterization Ultra-high Resolution Electron Microscopy for Catalyst Characterization 2009 DOE Hydrogen Program and Vehicle...

222

Ultra-High Resolution Electron Microscopy for Catalyst Characterizatio...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

High Resolution Electron Microscopy for Catalyst Characterization Ultra-High Resolution Electron Microscopy for Catalyst Characterization 2010 DOE Vehicle Technologies and Hydrogen...

223

Sandia National Laboratories: High-Resolution Computational Algorithms...  

NLE Websites -- All DOE Office Websites (Extended Search)

WindHigh-Resolution Computational Algorithms for Simulating Offshore Wind Farms High-Resolution Computational Algorithms for Simulating Offshore Wind Farms This Sandia National...

224

Application Of High-Resolution Thermal Infrared Sensors For Geothermal...  

Open Energy Info (EERE)

the distribution surrounding the most active geothermal features. The higher spectralspatial resolution SEBASS data were used to validate the lower spectralspatial resolution...

225

Revised Continuing Appropriations Resolution, 2007, P.L. 110...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Revised Continuing Appropriations Resolution, 2007, P.L. 110-5 Revised Continuing Appropriations Resolution, 2007, P.L. 110-5 Policy Flash Revised Continuing Appropriations...

226

Accelerated High-Resolution Differential Ion Mobility Separations...  

NLE Websites -- All DOE Office Websites (Extended Search)

High-Resolution Differential Ion Mobility Separations Using Hydrogen. Accelerated High-Resolution Differential Ion Mobility Separations Using Hydrogen. Abstract: The resolving...

227

Applications of High-Resolution Electrospray Ionization Mass...  

NLE Websites -- All DOE Office Websites (Extended Search)

High-Resolution Electrospray Ionization Mass Spectrometry to Measurements of Average Oxygen to Carbon Ratios in Applications of High-Resolution Electrospray Ionization Mass...

228

High Resolution and Low-Temperature Photoelectron Spectroscopy...  

NLE Websites -- All DOE Office Websites (Extended Search)

High Resolution and Low-Temperature Photoelectron Spectroscopy of an Oxygen-Linked Fullerene Dimer Dianion: C120O2-. High Resolution and Low-Temperature Photoelectron Spectroscopy...

229

Merging high resolution geophysical and geochemical surveys to...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

high resolution geophysical and geochemical surveys to reduce exploration risk at Glass Buttes, Oregon Merging high resolution geophysical and geochemical surveys to reduce...

230

Social Influences on Rat Spatial Choice Social Influences on Rat Spatial Choice  

E-Print Network (OSTI)

of spatial working memory paradigms using pairs of laboratory rats foraging together for food depleted of food by the other rat. The latter effect is based on working memory for the choices madeSocial Influences on Rat Spatial Choice Social Influences on Rat Spatial Choice Michael F. Brown

Cook, Robert

231

Impact of horizontal resolution on simulation of precipitation extremes in an aqua-planet version of the Community Atmosphere Model (CAM)  

SciTech Connect

One key question regarding current climate models is whether the projection of climate extremes converges to a realistic representation as the spatial and temporal resolutions of the model are increased. Ideally the model extreme statistics should approach a fixed distribution once the resolutions are commensurate with the characteristic length and time scales of the processes governing the formation of the extreme phenomena of interest. In this study, a series of AGCM runs with idealized 'aquaplanet-steady-state' boundary conditions have been performed with the Community Atmosphere Model CAM3 to investigate the effect of horizontal resolution on climate extreme simulations. The use of the aquaplanet framework highlights the roles of model physics and dynamics and removes any apparent convergence in extreme statistics due to better resolution of surface boundary conditions and other external inputs. Assessed at a same large spatial scale, the results show that the horizontal resolution and time step have strong effects on the simulations of precipitation extremes. The horizontal resolution has a much stronger impact on precipitation extremes than on mean precipitation. Updrafts are strongly correlated with extreme precipitation at tropics at all the resolutions, while positive low-tropospheric temperature anomalies are associated with extreme precipitation at mid-latitudes.

Li, F.; Collins, W.D.; Wehner, M.F.; Williamson, D.L.; Olson, J.G.; Algieri, C.

2011-03-01T23:59:59.000Z

232

DRAFT Chapter 3 Spatial Query Languages  

E-Print Network (OSTI)

in the previous chapter, the relational model has limitations in e#11;ectively handling spatial data. Spatial data with object functionality. This e#11;ort has materialized into a new OR-DBMS standard for SQL: SQL3. Since we. The pictogram- enhanced ER diagram of the database and the example tables are shown in Figure 3.1 and Table 3

Shekhar, Shashi

233

Crown Copyright 2014 Spatial biophysical data  

E-Print Network (OSTI)

© Crown Copyright 2014 Soils data IACS Baseline &UKCP09 WEAG area Spatial biophysical data Land ecosystem service (ES) benefits �consider the complex spatial and temporal impacts of land-use change cover, soils, and climate data. Species suitability and potential yield are modelled using Ecological

234

Spatial memory, recognition memory, and the hippocampus  

E-Print Network (OSTI)

Spatial memory, recognition memory, and the hippocampus Nicola J. Broadbent*, Larry R. Squire. Squire, August 27, 2004 There is wide agreement that spatial memory is dependent on the integrity recognition memory is not as clear. We examined the relationship between hippocampal lesion size and both

Squire, Larry R.

235

A Statistical Framework for Spatial Comparative Genomics  

E-Print Network (OSTI)

A Statistical Framework for Spatial Comparative Genomics Rose Hoberman May 2007 CMU-CS-07, or the U.S. Government. #12;Keywords: spatial comparative genomics, comparative genomics, gene clusters, max-gap clusters, gene teams, whole genome duplication, paralogons, synteny, ortholog detection #12

236

Sub-nanometer resolution in three-dimensional magnetic-resonance imaging of individual dark spins  

E-Print Network (OSTI)

Magnetic resonance imaging (MRI) has revolutionized biomedical science by providing non-invasive, three-dimensional biological imaging. However, spatial resolution in conventional MRI systems is limited to tens of microns, which is insufficient for imaging on molecular and atomic scales. Here we demonstrate an MRI technique that provides sub-nanometer spatial resolution in three dimensions, with single electron-spin sensitivity. Our imaging method works under ambient conditions and can measure ubiquitous 'dark' spins, which constitute nearly all spin targets of interest and cannot otherwise be individually detected. In this technique, the magnetic quantum-projection noise of dark spins is measured using a single nitrogen-vacancy (NV) magnetometer located near the surface of a diamond chip. The spatial distribution of spins surrounding the NV magnetometer is imaged with a scanning magnetic-field gradient. To evaluate the performance of the NV-MRI technique, we image the three-dimensional landscape of dark electronic spins at and just below the diamond surface and achieve an unprecedented combination of resolution (0.8 nm laterally and 1.5 nm vertically) and single-spin sensitivity. Our measurements uncover previously unidentified electronic spins on the diamond surface, which can potentially be used as resources for improved magnetic imaging of samples proximal to the NV-diamond sensor. This three-dimensional NV-MRI technique is immediately applicable to diverse systems including imaging spin chains, readout of individual spin-based quantum bits, and determining the precise location of spin labels in biological systems.

M. S. Grinolds; M. Warner; K. De Greve; Y. Dovzhenko; L. Thiel; R. L. Walsworth; S. Hong; P. Maletinsky; A. Yacoby

2014-01-12T23:59:59.000Z

237

Wind: wind power density GIS data at 50m above ground and 1km resolution  

Open Energy Info (EERE)

7018 7018 Varnish cache server Wind: wind power density GIS data at 50m above ground and 1km resolution for Ghana from NREL Dataset Summary Description (Abstract): Raster GIS data, exported as BIL file, 50 m wind power density for Ghana. Note: BIL files can be converted to raster data in ArcInfo using the IMAGEGRID command. (Purpose): To provide information on the wind resource potential in Ghana. Values range from 0 to 620 meters. (Supplemental Information):***** Spatial Reference Information (Beg) *****Projection ParametersCoordinate System:Projection Transverse MercatorZunits W/m2Units MetersSpheroid: WGS84ParametersScale factor at central meridian: 1.0000Longitude of central meridian: -1 0 0.0Latitude of origin: 8 0 0.0False easting: 0False northing: 0Spatial InformationRaster:Number of Columns:

238

Technologies and R&D for a High Resolution Cavity BPM for the CLIC Main Beam  

E-Print Network (OSTI)

The Main Beam (MB) linac of the Compact Linear Collider (CLIC) requires a beam orbit measurement system with high spatial (50 nm) and high temporal resolution (50 ns) to resolve the beam position within the 156 ns long bunch train, traveling on an energy-chirped, minimum dispersive trajectory. A 15 GHz prototype cavity BPM has been commissioned in the probe beam-line of the CTF3 CLIC Test Facility. We discuss performance and technical details of this prototype installation, including the 15 GHz analogue downconverter, the data acquisition and the control electronics and software. An R&D outlook is given for the next steps, which requires a system of 3 cavity BPMs to investigate the full resolution potential.

Towler, J R; Soby, L; Wendt, M; Boogert, S T; Cullinan, F J; Lyapin, A

2013-01-01T23:59:59.000Z

239

Wind: wind power density maps at 50 m above ground and 400m resolution for  

Open Energy Info (EERE)

400m resolution for 400m resolution for Sri Lanka from NREL Dataset Summary Description (Abstract): 50 m wind power density (W/m2) maps of Sri Lanka (Purpose): To provide information on the wind resource potential within Sri Lanka, with supplemental information on political boundaries, transmission lines, roads, and terrain relief. Source NREL Date Released June 30th, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords GEF GIS maps NREL Sri Lanka SWERA UNEP wind Data application/zip icon Download Maps (zip, 799.1 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period License License Open Data Commons Public Domain Dedication and Licence (PDDL) Comment Rate this dataset Usefulness of the metadata Average vote Your vote

240

A High Resolution Scale-of-four  

DOE R&D Accomplishments (OSTI)

A high resolution scale-of-four has been developed to be used in conjunction with the nuclear particle detection devices in applications where the counting rate is unusually high. Specifically, it is intended to precede the commercially available medium resolution scaling circuits and so decrease the resolving time of the counting system. The circuit will function reliably on continuously recurring pulses separated by less than 0.1 microseconds. It will resolve two pulses (occurring at a moderate repetition rate) which are spaced at 0.04 microseconds. A five-volt input signal is sufficient to actuate the device.

Fitch, V.

1949-08-25T23:59:59.000Z

Note: This page contains sample records for the topic "finer spatial resolution" 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

Two-dimensional Detector for High Resolution Soft X-ray Imaging  

SciTech Connect

A new two-dimensional (2D) detector for detecting soft X-ray (SX) images was developed. The detector has a scintillator plate to convert a SX image into a visible (VI) one, and a relay optics to magnify and detect the converted VI image. In advance of the fabrication of the detector, quantum efficiencies of scintillators were investigated. As a result, a Ce:LYSO single crystal on which Zr thin film was deposited was used as an image conversion plate. The spatial resolution of fabricated detector is 3.0 {mu}m, and the wavelength range which the detector has sensitivity is 30-6 nm region.

Ejima, Takeo; Ogasawara, Shodo; Hatano, Tadashi; Yanagihara, Mihiro; Yamamoto, Masaki [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University (Japan)

2010-06-23T23:59:59.000Z

242

Research Highlight  

NLE Websites -- All DOE Office Websites (Extended Search)

A Finer Mesh to Improve Cloud Representation in Climate Models? A Finer Mesh to Improve Cloud Representation in Climate Models? Submitter: Bhattacharya, A., Pacific Northwest National Laboratory Area of Research: Cloud Processes Working Group(s): Cloud Life Cycle Journal Reference: Boutle IA, SJ Abel, PG Hill, and CJ Morcrette. 2013. "Spatial variability of liquid cloud and rain: observations and microphysical effects." Quarterly Journal Royal Meteorological Society, , doi:10.1002/qj.2140. Different sizes of water droplets as well as varying water content dramatically alter cloud properties-often at a resolution finer than is currently in use by most climate models. Although clouds can extend for several kilometers, their properties-for example, liquid and rainwater content-can change dramatically over very

243

Structure of W3(OH) from Very High Spectral Resolution Observations of 5 Centimeter OH Masers  

E-Print Network (OSTI)

Recent studies of methanol and ground-state OH masers at very high spectral resolution have shed new light on small-scale maser processes. The nearby source W3(OH), which contains numerous bright masers in several different transitions, provides an excellent laboratory for high spectral resolution techniques. We present a model of W3(OH) based on EVN observations of the rotationally-excited 6030 and 6035 MHz OH masers taken at 0.024 km/s spectral resolution. The 6.0 GHz masers are becoming brighter with time and show evidence for tangential proper motions. We confirm the existence of a region of magnetic field oriented toward the observer to the southeast and find another such region to the northeast in W3(OH), near the champagne flow. The 6.0 GHz masers trace the inner edge of a counterclockwise rotating torus feature. Masers at 6030 MHz are usually a factor of a few weaker than at 6035 MHz but trace the same material. Velocity gradients of nearby Zeeman components are much more closely correlated than in the ground state, likely due to the smaller spatial separation between Zeeman components. Hydroxyl maser peaks at very long baseline interferometric resolution appear to have structure on scales both smaller than that resolvable as well as on larger scales.

Vincent L. Fish; Loránt O. Sjouwerman

2007-06-22T23:59:59.000Z

244

A Study on the time resolution of Glass RPC  

E-Print Network (OSTI)

The 50~kton Iron Calorimeter (ICAL) detector at the underground India based Neutrino Observatory (INO) will make measurements on atmospheric neutrinos. Muons produced in charged current (CC) interactions of muon neutrinos with the iron are tracked spatially and temporally through the signals that they produce in the Resistive Plate Chambers~(RPCs) that are interleaved with iron layers. Since the RPCs will be operated in the avalanche mode the signal rise-time is $\\sim~1~\\rm{nsec}$ resulting in a fast time response. While the muon track is derived from the X and Y hit information of the RPCs and the layer number (Z), the upward or downward direction is obtained by using the time information from the detector. Such a capability can be examined by analysing the timing information from $1~\\rm{m}~\\times~1~\\rm{m}$ glass RPCs, with $3~\\rm{cm}$ wide X- and Y- pick-up strips, in a $12$ layer RPC stack that measures cosmic muon events. The present study looks at the pixel-wise time response of these RPCs in order to improve the relative time distribution and hence the up-down discrimination capability. After including the effect of propagation delay in the cable and pick-up panel the time resolution improves, in some cases, to $\\leq~1~\\rm{nsec}$ whereas in some cases there is no significant change. These results will help in significantly improving on the extraction of the directionality of muons produced in CC interactions of $\

N. Dash; V. M. Datar; G. Majumder

2014-10-21T23:59:59.000Z

245

Impact of orthorectification and spatial sampling on maximum NDVI composite data in mountain regions  

Science Journals Connector (OSTI)

Topography and accuracy of image geometric registration significantly affect the quality of satellite data, since pixels are displaced depending on surface elevation and viewing geometry. This effect should be corrected for through the process of accurate image navigation and orthorectification in order to meet the geolocation accuracy for systematic observations specified by the Global Climate Observing System (GCOS) requirements for satellite climate data records. We investigated the impact of orthorectification on the accuracy of maximum Normalized Difference Vegetation Index (NDVI) composite data for a mountain region in north-western Canada at various spatial resolutions (1 km, 4 km, 5 km, and 8 km). Data from AVHRR on board NOAA-11 (1989 and 1990) and NOAA-16 (2001, 2002, and 2003) processed using a system called CAPS (Canadian AVHRR Processing System) for the month of August were considered. Results demonstrate the significant impact of orthorectification on the quality of composite NDVI data in mountainous terrain. Differences between orthorectified and non-orthorectified NDVI composites (?NDVI) adopted both large positive and negative values, with the 1% and 99% percentiles of ?NDVI at 1 km resolution spanning values between ? 0.16 < ?NDVI < 0.09. Differences were generally reduced to smaller numbers for coarser resolution data, but systematic positive biases for non-orthorectified composites were obtained at all spatial resolutions, ranging from 0.02 (1 km) to 0.004 (8 km). Analyzing the power spectra of maximum NDVI composites at 1 km resolution, large differences between orthorectified and non-orthorectified AVHRR data were identified at spatial scales between 4 km and 10 km. Validation of NOAA-16 AVHRR NDVI with MODIS NDVI composites revealed higher correlation coefficients (by up to 0.1) for orthorectified composites relative to the non-orthorectified case. Uncertainties due to the AVHRR Global Area Coverage (GAC) sampling scheme introduce an average positive bias of 0.02 ± 0.03 at maximum NDVI composite level that translates into an average relative bias of 10.6% ± 19.1 for sparsely vegetated mountain regions. This can at least partially explain the systematic average positive biases we observed relative to our results in AVHRR GAC-based composites from the Global Inventory Modeling and Mapping Studies (GIMMS) and Polar Pathfinder (PPF) datasets (0.19 and 0.05, respectively). With regard to the generation of AVHRR long-term climate data records, results suggest that orthorectification should be an integral part of AVHRR pre-processing, since neglecting the terrain displacement effect may lead to important biases and additional noise in time series at various spatial scales.

Fabio M.A. Fontana; Alexander P. Trishchenko; Konstantin V. Khlopenkov; Yi Luo; Stefan Wunderle

2009-01-01T23:59:59.000Z

246

Collection of very low resolution protein data  

Science Journals Connector (OSTI)

Simple modifications to a MAR 345 detector which facilitate the collection of very low resolution data are described. With these modifications, the lowest order reflections from a poliovirus crystal (c = 377.1 ?) were observed, and measurement of all reflections in typical protein cells should be routine.

Miller, S.T.

1999-12-01T23:59:59.000Z

247

Development of a three resolution video encoder  

E-Print Network (OSTI)

A software based, three resolution video encoder is developed for use in real time, desktop, packet switched videoconferencing over the Internet. The encoder is capable of encoding simultaneously, three streams for three-80x60, 160x120 and 320x240...

Sazzad, Sharif Mohammad

2012-06-07T23:59:59.000Z

248

Iterative Collision Resolution in Wireless Networks  

E-Print Network (OSTI)

ITERATIVE COLLISION RESOLUTION IN WIRELESS NETWORKS An Undergraduate Research Scholars Thesis by KATHERINE CHRISTINE STUCKMAN Submitted to Honors and Undergraduate Research Texas A&M University in partial fulfillment... Networks (April 2013) Katherine Christine Stuckman Department of Electrical and Computer Engineering Texas A&M University Research Advisor: Dr. Krishna Narayanan Department of Electrical and Computer Engineering With the growing...

Stuckman, Katherine Christine

2013-03-29T23:59:59.000Z

249

Characteristic Spatial Scales in Earthquake Data  

E-Print Network (OSTI)

We present a new technique in order to quantify the dynamics of spatially extended systems. Using a test on the existence of unstable periodic orbits, we identify intermediate spatial scales, wherein the dynamics is characterized by maximum nontrivial determinism. This method is applied to earthquake catalogues containing time, coordinates and magnitude. As a result we extract a set of areas with significant deterministic and low-dimensional dynamics from the data. Finally, a simple model is used to show that these scales can be interpreted as local spatial coupling strengths.

G. Zoeller; R. Engbert; S. Hainzl; J. Kurths

1997-01-30T23:59:59.000Z

250

Two-beam ultrabroadband coherent anti-Stokes Raman spectroscopy for high resolution gas-phase multiplex imaging  

SciTech Connect

We propose and develop a method for wideband coherent anti-Stokes Raman spectroscopy (CARS) in the gas phase and demonstrate the single-shot measurement of N{sub 2}, H{sub 2}, CO{sub 2}, O{sub 2}, and CH{sub 4}. Pure-rotational and vibrational O-, Q-, and S- branch spectra are collected simultaneously, with high spectral and spatial resolution, and within a single-laser-shot. The relative intensity of the rotational and vibrational signals can be tuned arbitrarily using polarization techniques. The ultrashort 7 fs pump and Stokes pulses are automatically overlapped temporally and spatially using a two-beam CARS technique, and the crossed probe beam allows for excellent spatial sectioning of the probed location.

Bohlin, Alexis; Kliewer, Christopher J., E-mail: cjkliew@sandia.gov [Combustion Research Facility, Sandia National Laboratories, Livermore, California 94550 (United States)

2014-01-20T23:59:59.000Z

251

Consideration of spatial effects in reactivity measurements  

SciTech Connect

Various methods of considering spatial effects in reactivity measurements are presented. These methods are employed both at the critical (mainly fast-neutron) facilities and at the BN-600 reactor.

Matveenko, I. P., E-mail: matveenko@ippe.ru; Lititskii, V. A.; Shokod'ko, A. G. [Institute of Physics and Power Engineering (Russian Federation)

2010-12-15T23:59:59.000Z

252

Spatial Error Metrics for Oceanographic Model Verification  

Science Journals Connector (OSTI)

A common problem with modern numerical oceanographic models is spatial displacement, including misplacement and misshapenness of ocean circulation features. Traditional error metrics, such as least squares methods, are ineffective in many such ...

Sean B. Ziegeler; James D. Dykes; Jay F. Shriver

2012-02-01T23:59:59.000Z

253

Modeling and Analysis of Spatially Correlated Data  

E-Print Network (OSTI)

into a person's lungs) in air- pollution monitoring sites and characterize its spatial distributions. The shared in the amount of precipitation over adjacent tropical forests. Mining engineers are keen to predict the conserve

Li, Yi

254

Spatial Convergence of Bidirectional Reflectance Models  

Science Journals Connector (OSTI)

Analyses of bidirectional reflectance data are presented with implications regarding the spatial scales appropriate for inferring irradiances from radiances reflected by various surface–atmosphere scenes. Multiple-angle radiance data collected in ...

John M. Davis; Stephen K. Cox

1998-10-01T23:59:59.000Z

255

Adaptive spatial hypermedia in computational journalism  

Science Journals Connector (OSTI)

Computational journalism allows journalists to collect large collections of information chunks from separate sources. The analysis of these collections can reveal hidden relationships between of relationships, but due to their size, diversity, ... Keywords: computatonal journalism, spatial hypermedia

Luis Francisco-Revilla; Alvaro Figueira

2012-06-01T23:59:59.000Z

256

Spatial solitary-wave optical memory  

Science Journals Connector (OSTI)

We consider some features of spatial solitary-wave switching in a unidirectional ring cavity that is partially filled with a fast and saturably self-focusing nonlinear medium. Large...

McDonald, G S; Firth, W J

1990-01-01T23:59:59.000Z

257

Effect of gis learning on spatial ability  

E-Print Network (OSTI)

#0;?#0;? Data management (topology) #0;?#0;? Geocoding (Georeferencing) #0;?#0;? Classifying spatial data (e.g., dot map, choropleth map) #0;?#0;? Searching for patterns (e.g., distribution, network, hierarchy) #0;?#0;? Analyzing...

Lee, Jong Won

2006-08-16T23:59:59.000Z

258

Organizing the Aggregate: Languages for Spatial Computing  

E-Print Network (OSTI)

As the number of computing devices embedded into engineered systems continues to rise, there is a widening gap between the needs of the user to control aggregates of devices and the complex technology of individual devices. Spatial computing attempts to bridge this gap for systems with local communication by exploiting the connection between physical locality and device connectivity. A large number of spatial computing domain specific languages (DSLs) have emerged across diverse domains, from biology and reconfigurable computing, to sensor networks and agent-based systems. In this paper, we develop a framework for analyzing and comparing spatial computing DSLs, survey the current state of the art, and provide a roadmap for future spatial computing DSL investigation.

Beal, Jacob; Usbeck, Kyle; Viroli, Mirko; Correll, Nikolaus

2012-01-01T23:59:59.000Z

259

Spatial correlation structure estimation using geophysical and hydrogeological data  

E-Print Network (OSTI)

Spatial correlation structure estimation using geophysical and hydrogeological data Susan S investigate the use of tomographic geophysical data in combination with hydrogeological data in the spatial of data having different support scales and spatial sampling windows was facilitated. Comparison

Hubbard, Susan

260

Correspondence Clustering: An Approach to Cluster Multiple Related Spatial Datasets  

E-Print Network (OSTI)

Correspondence Clustering: An Approach to Cluster Multiple Related Spatial Datasets Vadeerat spatial datasets. This capability is important for change analysis and contrast mining. In this paper spatial datasets by maximizing cluster interestingness and correspondence between clusters derived from

Eick, Christoph F.

Note: This page contains sample records for the topic "finer spatial resolution" 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

Analysing earthquake slip models with the spatial prediction comparison test  

Science Journals Connector (OSTI)

......slip models with the spatial prediction comparison test Ling Zhang 1 P. Martin Mai 1 Kiran K.S. Thingbaijam...performance of the spatial prediction comparison test (SPCT), a statistical test developed to compare spatial (random) fields by......

Ling Zhang; P. Martin Mai; Kiran K.S. Thingbaijam; Hoby N.T. Razafindrakoto; Marc G. Genton

2015-01-01T23:59:59.000Z

262

3D-Printing Spatially Varying BRDFs  

Science Journals Connector (OSTI)

A new method fabricates custom surface reflectance and spatially varying bidirectional reflectance distribution functions (svBRDFs). Researchers optimize a microgeometry for a range of normal distribution functions and simulate the resulting surface's ... Keywords: Three-dimensional displays,Printing,Fabrication,Computational modeling,Solid modeling,Printers,Face recognition,computer graphics,bidirectional reflectance distribution function,BRDF,spatially varying bidirectional reflectance distribution function,svBRDF,3D printing,normal distribution function,NDF,microgeometry,surface reflectance

Olivier Rouiller; Bernd Bickel; Wojciech Matusik; Marc Alexa; Jan Kautz

2013-11-01T23:59:59.000Z

263

Dual spatial maps of transcript and protein abundance in the...  

NLE Websites -- All DOE Office Websites (Extended Search)

Dual spatial maps of transcript and protein abundance in the mouse brain. Dual spatial maps of transcript and protein abundance in the mouse brain. Abstract: Integrating...

264

Definition: SAR | Open Energy Information  

Open Energy Info (EERE)

SAR SAR Jump to: navigation, search Dictionary.png SAR Synthetic-aperture radar (SAR) is a form of radar whose defining characteristic is its use of relative motion, between an antenna and its target region, to provide distinctive long-term coherent-signal variations, that are exploited to obtain finer spatial resolution than is possible with conventional beam-scanning means. It originated as an advanced form of side-looking airborne radar (SLAR).[1] View on Wikipedia Wikipedia Definition Synthetic-aperture radar (SAR) is a form of radar whose defining characteristic is its use of relative motion, between an antenna and its target region, to provide distinctive long-term coherent-signal variations, that are exploited to obtain finer spatial resolution than is possible with

265

Cross strip microchannel plate imaging photon counters with high time resolution  

SciTech Connect

We have implemented cross strip readout microchannel plate detectors in 18 mm active area format including open face (UV/particle) and sealed tube (optical) configurations. These have been tested with a field programmable gate array based parallel channel electronics for event encoding which can process high input event rates (> 5 MHz) with high spatial resolution. Using small pore MCPs (6 {micro}m) operated in a pair, we achieve gains of >5 x 10{sup 5} which is sufficient to provide spatial resolution of <35 {micro}m FHWM, with self triggered event timing accuracy of {approx}2 ns for sealed tube optical sensors. A peak quantum efficiency of {approx}19% at 500 nm has been achieved with SuperGenII photocathodes that have response over the 400 nm to 900 nm range. Local area counting rates of up to >200 events/mcp pore sec{sup -1} have been attained, along with image linearity and stability to better than 50 {micro}m.

Stonehill, Laura C [Los Alamos National Laboratory; Shirey, Robert [Los Alamos National Laboratory; Rabin, Michael W [Los Alamos National Laboratory; Thompson, David C [Los Alamos National Laboratory; Siegmund, Oswald H W [U.C. BERKELEY; Vallerga, John V [U.C. BERKELEY; Tremsin, Anton S [U.C. BERKELEY

2010-01-01T23:59:59.000Z

266

High-Resolution Radio Continuum Measurements of the Nuclear Disks of Arp 220  

E-Print Network (OSTI)

We present new Karl G. Jansky Very Large Array radio continuum images of the nuclei of Arp 220, the nearest ultra-luminous infrared galaxy. These images have both the angular resolution to study detailed morphologies of the two nuclei that power the system and sensitivity to a wide range of spatial scales. At 33 GHz, and with a resolution of 0".081 x 0".063 (29.9 x 23.3 pc), we resolve the emission surrounding both nuclei and conclude that is mostly synchrotron in nature. The spatial distributions of radio emission in both nuclei are well described by exponential profiles. These have deconvolved half-light radii of 51 and 35 pc for the eastern and western nuclei, and they match the number density profile of radio supernovae observed with very long baseline interferometry. This similarity might be due to the fast cooling of cosmic rays electrons caused by the presence of a strong (~ mG) magnetic field in this system. We estimate high luminosity surface densities of $\\mathrm{\\Sigma_{IR} \\sim 4.2^{+1.6}_{-0.7} \\...

Barcos-Muñoz, Loreto; Evans, Aaron S; Privon, George C; Armus, Lee; Condon, Jim; Mazzarella, Joseph M; Meier, David S; Momjian, Emmanuel; Murphy, Eric J; Ott, Juerguen; Reichardt, Ashely; Sakamoto, Kazushi; Sanders, David B; Schinnerer, Eva; Stierwalt, Sabrina; Surace, Jason A; Thompson, Todd A; Walter, Fabian

2014-01-01T23:59:59.000Z

267

Spatially Resolved STIS Spectroscopy of Betelgeuse's Outer Atmosphere  

E-Print Network (OSTI)

We present spatially resolved spectra observed with HST-STIS of the upper chromosphere and dust envelope of Alpha Orionis (M2 Iab). In the fall of 2002 a set of five high-resolution near-UV spectra was obtained by scanning at intensity peak-up position and four off-limb target positions up to one arcsecond, using a small aperture, to investigate the thermal conditions and flow dynamics in the outer atmosphere of this important nearby cool supergiant star. Based on Mg II h & k, Fe II 2716 A, C II 2327 A, and Al II ] 2669 A emission lines we provide the first evidence for the presence of warm chromospheric plasma at least 1 arcsecond away from the star at ~40 R* (1 R*~700 Rsun). The STIS spectra reveal that Betelgeuse's upper chromosphere extends far beyond the circumstellar H alpha envelope of ~5 R*, determined from previous ground-based imaging. The flux in the broad and self-absorbed resonance lines of Mg II decreases by a factor of ~700 compared to the flux at chromospheric disk center. We observe strong asymmetry changes in the Mg II h and Si I resonance line profiles when scanning off-limb, signaling the outward acceleration of gas outflow in the upper chromosphere. From the radial intensity distributions of Fe I and Fe II emission lines we determine the radial non-LTE iron ionization balance. We compute that the local kinetic gas temperatures of the warm chromospheric gas component in the outer atmosphere exceed 2600 K, when assuming local gas densities of the cool gas component we determine from radiative transfer models that fit the 9.7 um silicate dust emission feature. The spatially resolved STIS spectra directly demonstrate that warm chromospheric plasma co-exisists with cool gas in Betelgeuse's circumstellar dust envelope.

A. Lobel; J. Aufdenberg; A. K. Dupree; R. L. Kurucz; R. P. Stefanik; G. Torres

2003-12-03T23:59:59.000Z

268

High resolution, high speed ultrahigh vacuum microscopy  

SciTech Connect

The history and future of transmission electron microscopy (TEM) is discussed as it refers to the eventual development of instruments and techniques applicable to the real time in situ investigation of surface processes with high resolution. To reach this objective, it was necessary to transform conventional high resolution instruments so that an ultrahigh vacuum (UHV) environment at the sample site was created, that access to the sample by various in situ sample modification procedures was provided, and that in situ sample exchanges with other integrated surface analytical systems became possible. Furthermore, high resolution image acquisition systems had to be developed to take advantage of the high speed imaging capabilities of projection imaging microscopes. These changes to conventional electron microscopy and its uses were slowly realized in a few international laboratories over a period of almost 40 years by a relatively small number of researchers crucially interested in advancing the state of the art of electron microscopy and its applications to diverse areas of interest; often concentrating on the nucleation, growth, and properties of thin films on well defined material surfaces. A part of this review is dedicated to the recognition of the major contributions to surface and thin film science by these pioneers. Finally, some of the important current developments in aberration corrected electron optics and eventual adaptations to in situ UHV microscopy are discussed. As a result of all the path breaking developments that have led to today's highly sophisticated UHV-TEM systems, integrated fundamental studies are now possible that combine many traditional surface science approaches. Combined investigations to date have involved in situ and ex situ surface microscopies such as scanning tunneling microscopy/atomic force microscopy, scanning Auger microscopy, and photoemission electron microscopy, and area-integrating techniques such as x-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, Auger electron spectroscopy, low-energy electron diffraction, temperature programmed desorption, high-resolution electron energy-loss and Fourier-transform infrared spectroscopies, and others. Material systems ranging from atomic layers of metals and semiconductors to biology related depositions are being investigated. In the case of biological materials, however, strict limitations to high-resolution applications are imposed by electron radiation damage considerations.

Poppa, Helmut [National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

2004-09-01T23:59:59.000Z

269

Influence of surface heterogeneity on L-band (1.4 GHz) measurements at various spatial resolutions; some preliminary  

E-Print Network (OSTI)

Open--heathheath understoryunderstory:: SiftonSifton bushbush Sandy soils, high % rock coverSandy soils, high % rock cover Litter

Walker, Jeff

270
271

Research on Subwavelength Microphtonic Sensors for In-situ Monitoring with High Spatial and Temporal Resolution in Manufacturing Environments  

E-Print Network (OSTI)

immunity to electromagnetic interference, resistance toimmunity to electromagnetic interference, resistance to

Li, Xiaochun; Wong, Chee Wei; Dornfeld, David; Thomas, Brian

2006-01-01T23:59:59.000Z

272

Validation of Current Moderate Resolution Imaging Spectroradiometer (MODIS) Daily Snow Albedo Product and Spatial Analysis Based on Multiple Sensors  

E-Print Network (OSTI)

. This provided important information on whether or not the retrieved MODIS albedos are of sufficient accuracy to be useful to the wider scientific community. Two types of pyranometers (i.e. photodiodes and thermopiles) were used to measure snow albedo... in the field. Inexpensive photodiodes only cover a limited spectral region (typically 300-1000 nm) but are robust under field conditions. Thermopiles cover broader wavelength regions than photodiodes, but are both more expensive and more 24 fragile...

Zhao, Panshu

2012-07-16T23:59:59.000Z

273

High-resolution spatial mapping of the temperature distribution of a Joule self-heated graphene nanoribbon  

E-Print Network (OSTI)

by epoxidation reaction J. Renewable Sustainable Energy 4, 053108 (2012) Strength analysis and optimisation glycol monobutyl ether palm oil monoester as a newtype biodiesel J. Renewable Sustainable Energy 4, 053118 (2012) Dynamical regimes due to technological change in a microeconomical model of production

Heinz, Tony F.

274

Spatial resolution limits in electron-beam-induced deposition N. Silvis-Cividjian, C. W. Hagen,a  

E-Print Network (OSTI)

were written in a 200-kV STEM on a 30-nm SiN membrane. © 2005 American Institute of Physics. DOI: 10-beam instruments, such as scanning electron microscopes, scanning transmission electron microscopes STEM of a singular deposited dot or line, always exceeds the diameter of the electron beam. Until recently, no one

Silvis-Cividjian, Natalia

275

High resolution fossil fuel combustion CO2 emission fluxes for the United States  

SciTech Connect

Quantification of fossil fuel CO{sub 2} emissions at fine space and time resolution is emerging as a critical need in carbon cycle and climate change research. As atmospheric CO{sub 2} measurements expand with the advent of a dedicated remote sensing platform and denser in situ measurements, the ability to close the carbon budget at spatial scales of {approx}100 km{sup 2} and daily time scales requires fossil fuel CO{sub 2} inventories at commensurate resolution. Additionally, the growing interest in U.S. climate change policy measures are best served by emissions that are tied to the driving processes in space and time. Here we introduce a high resolution data product (the 'Vulcan' inventory: www.purdue.edu/eas/carbon/vulcan/) that has quantified fossil fuel CO{sub 2} emissions for the contiguous U.S. at spatial scales less than 100 km{sup 2} and temporal scales as small as hours. This data product, completed for the year 2002, includes detail on combustion technology and 48 fuel types through all sectors of the U.S. economy. The Vulcan inventory is built from the decades of local/regional air pollution monitoring and complements these data with census, traffic, and digital road data sets. The Vulcan inventory shows excellent agreement with national-level Department of Energy inventories, despite the different approach taken by the DOE to quantify U.S. fossil fuel CO{sub 2} emissions. Comparison to the global 1{sup o} x 1{sup o} fossil fuel CO{sub 2} inventory, used widely by the carbon cycle and climate change community prior to the construction of the Vulcan inventory, highlights the space/time biases inherent in the population-based approach.

Gurney, Kevin R.; Mendoza, Daniel L.; Zhou, Yuyu; Fischer, Marc L.; Miller, Chris C.; Geethakumar, Sarath; de la Rue du Can, Stephane

2009-03-19T23:59:59.000Z

276

Integrating Brain Data Spatially: Spatial Data Infrastructure and Atlas Environment for Online  

E-Print Network (OSTI)

Integrating Brain Data Spatially: Spatial Data Infrastructure and Atlas Environment for Online Federation and Analysis of Brain Images Ilya Zaslavsky1 , Haiyun He2 , Joshua Tran1 , Maryann E. Martone2 Numerous digital atlases of the brain have been developed for different species through the efforts

Gupta, Amarnath

277

COMP 198 Spatial Reasoning and GIS Spring 2012 COMP 198 Spatial Reasoning and GIS  

E-Print Network (OSTI)

COMP 198 Spatial Reasoning and GIS Spring 2012 COMP 198 Spatial Reasoning and GIS MWF Lecture/Lab Mars Science 3100 (GIS Lab) 11:30-12:20 Who: Michael Gousie Where: Science Center 1325 When: Mon, Wed 1. But how do all these technologies work? They are all versions of a GIS. A Geographic Information System

Gousie, Michael B.

278

Optimisation of global grids for high-resolution remote sensing data  

Science Journals Connector (OSTI)

Abstract Upcoming remote sensing systems onboard satellites will generate unprecedented volumes of spatial data, hence challenging processing facilities in terms of storage and processing capacities. Thus, an efficient handling of remote sensing data is of vital importance, demanding a well-suited definition of spatial grids for the data?s storage and manipulation. For high-resolution image data, regular grids defined by map projections have been identified as practicable, cognisant of their drawbacks due to geometric distortions. To this end, we defined a new metric named grid oversampling factor (GOF) that estimates local data oversampling appearing during projection of generic satellite images to a regular raster grid. Based on common map projections, we defined sets of spatial grids optimised to minimise data oversampling. Moreover, they ensure that data undersampling cannot occur at any location. From the resulting GOF-values we concluded that equidistant projections are most suitable, with a global mean oversampling of 2% when using a system of seven continental grids (introduced under the name Equi7 Grid). Opposed to previous studies that suggested equal-area projections, we recommend the Plate Carrée, the Equidistant Conic and the Equidistant Azimuthal projection for global, hemispherical and continental grids, respectively.

Bernhard Bauer-Marschallinger; Daniel Sabel; Wolfgang Wagner

2014-01-01T23:59:59.000Z

279

Measuring spatial variability in soil characteristics  

DOE Patents (OSTI)

The present invention provides systems and methods for measuring a load force associated with pulling a farm implement through soil that is used to generate a spatially variable map that represents the spatial variability of the physical characteristics of the soil. An instrumented hitch pin configured to measure a load force is provided that measures the load force generated by a farm implement when the farm implement is connected with a tractor and pulled through or across soil. Each time a load force is measured, a global positioning system identifies the location of the measurement. This data is stored and analyzed to generate a spatially variable map of the soil. This map is representative of the physical characteristics of the soil, which are inferred from the magnitude of the load force.

Hoskinson, Reed L. (Rigby, ID); Svoboda, John M. (Idaho Falls, ID); Sawyer, J. Wayne (Hampton, VA); Hess, John R. (Ashton, ID); Hess, J. Richard (Idaho Falls, ID)

2002-01-01T23:59:59.000Z

280

Status report on roadmap headquarters issue resolution activities  

SciTech Connect

The Roadmap Project Office (RPO), under the Office of Planning (EM-14), continues to review headquarters (HQ) issues raised by the field in their roadmap documents. Currently, twenty-nine HQ issues are in the ``resolution`` process or are being defined for resolution. The resolution process involves an Environmental Restoration and Waste Management Program (EM) HQ person, the Action Officer (AO), as the leader in the resolution process. The RPO is responsible to EM-14 for reporting on the progress of issue resolution activities and also to provide contractor support to each Action Officer: the contractor support person is identifies as the Issue Resolution Facilitator (IF). Field contacts also are identified for each issue. This document provides current information on HQ issues actively in the ``resolution`` process or being defined for resolution. The issues are primarily institutional rather than technical and mainly involve regulatory, coordination, prioritization, policy and management concerns.

Not Available

1993-04-07T23:59:59.000Z

Note: This page contains sample records for the topic "finer spatial resolution" 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

Status report on roadmap headquarters issue resolution activities  

SciTech Connect

The Roadmap Project Office (RPO), under the Office of Planning (EM-14), continues to review headquarters (HQ) issues raised by the field in their roadmap documents. Currently, twenty-nine HQ issues are in the resolution'' process or are being defined for resolution. The resolution process involves an Environmental Restoration and Waste Management Program (EM) HQ person, the Action Officer (AO), as the leader in the resolution process. The RPO is responsible to EM-14 for reporting on the progress of issue resolution activities and also to provide contractor support to each Action Officer: the contractor support person is identifies as the Issue Resolution Facilitator (IF). Field contacts also are identified for each issue. This document provides current information on HQ issues actively in the resolution'' process or being defined for resolution. The issues are primarily institutional rather than technical and mainly involve regulatory, coordination, prioritization, policy and management concerns.

Not Available

1993-04-07T23:59:59.000Z

282

Bayesian Hierarchical Model for Combining Two-resolution Metrology Data  

E-Print Network (OSTI)

This dissertation presents a Bayesian hierarchical model to combine two-resolution metrology data for inspecting the geometric quality of manufactured parts. The high- resolution data points are scarce, and thus scatter over the surface being...

Xia, Haifeng

2010-01-14T23:59:59.000Z

283

Goodbye, Watts. Hello, Lumens. (High-Resolution EPS Billboard...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EPS Billboard) Goodbye, Watts. Hello, Lumens. (High-Resolution EPS Billboard) High-resolution EPS of billboard reading, 'Goodbye Watts. Hello Lumens. The new way to shop for light....

284

Catalyst Cartography: 3D Super-Resolution Mapping of Catalytic...  

NLE Websites -- All DOE Office Websites (Extended Search)

Catalyst Cartography: 3D Super-Resolution Mapping of Catalytic Activity Thanks to a groundbreaking new method, scientists have created the first 3D super-resolution maps of...

285

Microsoft PowerPoint - bpm camera resolution measurements.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

lines per mm Resolution edge 46x55 micronpix 11 lines per mm 213 34x26.5 mm 195 mm Pixel Calibration Resolution Center Relative intensity Field of view Work Dist Zoom lens with...

286

Light energy matching method in high-resolution image reconstruction  

Science Journals Connector (OSTI)

Many approaches for high-resolution image reconstruction have been proposed in some literatures. One of the most commonly ways is to reconstruct a high-resolution image from a...

Wang, Ling; Xu, Zhihai; Feng, Huajun; Zhang, Ping

2003-01-01T23:59:59.000Z

287

Tomography and High-Resolution Electron Microscopy Study of Surfaces...  

NLE Websites -- All DOE Office Websites (Extended Search)

Tomography and High-Resolution Electron Microscopy Study of Surfaces and Porosity in a Plate-Like ?-Al2O3. Tomography and High-Resolution Electron Microscopy Study of...

288

Beyond location based: the spatially aware mobile phone  

Science Journals Connector (OSTI)

An increasing number of mobile phones feature embedded sensors such as GPS receivers, digital compasses or accelerometer-based tilt sensors. In this paper, we present an application framework for building spatially aware mobile applications – applications ... Keywords: geo-spatial information, location based services, personal spatial assistants, spatial information appliances

Rainer Simon; Peter Fröhlich; Hermann Anegg

2006-12-01T23:59:59.000Z

289

3 Fundamentals of spatial data warehousing for geographic  

E-Print Network (OSTI)

3 Fundamentals of spatial data warehousing for geographic knowledge discovery Yvan Bédard, Tim Data Base Management System (RDBMS). Today, spatial databases are also implemented in spatial packages using so-called 'data cubes' and in spatial data warehouses. Such databases are structured

290

Mining Spatial Association Rules in Census Data: A Relational Approach  

E-Print Network (OSTI)

Mining Spatial Association Rules in Census Data: A Relational Approach Donato Malerba, Francesca A involving spatial relations among (spatial) objects. The method is based on a multi-relational data mining by traditional statistical techniques in spatial data analysis. The proposed method has been implemented

Malerba, Donato

291

A Data Partitioning Scheme for Spatial Regression Slobodan Vucetic1  

E-Print Network (OSTI)

A Data Partitioning Scheme for Spatial Regression Slobodan Vucetic1 , Tim Fiez2 and Zoran Obradovic dealing with agricultural problems characterized with strong spatial data correlation. A sim- ple spatial better generalization is proposed. Also, integration of predictors formed from spatially partitioned data

Vucetic, Slobodan

292

Spatial Data Algorithm Extension To TRAKLA2 Environment  

E-Print Network (OSTI)

Spatial Data Algorithm Extension To TRAKLA2 Environment Jussi Nikander Department of Computer In this paper an extension that brings spatial data al- gorithm support to the TRAKLA2 system is described and ideas for better spatial data support to the system are given. Keywords Spatial Data Algorithms

293

Finding Aggregate Proximity Relationships and Commonalities in Spatial Data Mining  

E-Print Network (OSTI)

Finding Aggregate Proximity Relationships and Commonalities in Spatial Data Mining Edwin M. Knorr interested in mining spatial data. Due to the ever­growing uses of spatial systems such as GIS's, there are already huge amounts of spatial data accumulated, presenting ample opportunities for data analysis

Knorr, Edwin M.

294

Spatial Data Models and Query Processing Hanan Samet  

E-Print Network (OSTI)

Spatial Data Models and Query Processing Hanan Samet Walid G. Aref Computer Science Department databases. The focus is on data models and query processing. Query optimization in a spatial environment is also brie y discussed. Keywords and phrases: spatial databases, data models, spatial query processing

Samet, Hanan

295

Data augmentation for a Bayesian spatial model involving censored observations  

E-Print Network (OSTI)

Data augmentation for a Bayesian spatial model involving censored observations Brooke L Fridley1 (fax) 1 #12;SUMMARY Spatial environmental data sometimes include below detection limit observations (i. We develop a measurement error Bayesian spatial model for the analysis of spatial data with censored

296

Spatial Data Mining: Database Primitives, Algorithms and Efficient DBMS Support  

E-Print Network (OSTI)

- 1 - Spatial Data Mining: Database Primitives, Algorithms and Efficient DBMS Support Martin Ester: Spatial data mining algorithms heavily depend on the efficient processing of neighbor- hood relations of these concepts will allow a tight integration of spatial data mining algo- rithms with a spatial database

Ester, Martin

297

DISSERTATION ETH No. 12374 Spatial Raster Data Management  

E-Print Network (OSTI)

DISSERTATION ETH No. 12374 Spatial Raster Data Management for Geo-Information Systems A Database Concepts 9 2.1 Spatial Data Models and Raster Concepts 9 2.2 Spatial Raster Classes 11 23 Raster Data.5.1 Introduction 26 2.5.2 Significance in Raster Data Management 27 2.5.3 Metadata for Spatial Raster Data 28 2

Giger, Christine

298

High resolution numerical study of Rayleigh-Taylor turbulence using a thermal lattice Boltzmann scheme  

E-Print Network (OSTI)

We present results of a high resolution numerical study of two dimensional (2d) Rayleigh-Taylor turbulence using a recently proposed thermal lattice Boltzmann method (LBT). The goal of our study is both methodological and physical. We assess merits and limitations concerning small- and large-scale resolution/accuracy of the adopted integration scheme. We discuss quantitatively the requirements needed to keep the method stable and precise enough to simulate stratified and unstratified flows driven by thermal active fluctuations at high Rayleigh and high Reynolds numbers. We present data with spatial resolution up to 4096 x 10000 grid points and Rayleigh number up to Ra ~ 10^11 . The statistical quality of the data allows us to investigate velocity and temperature fluctuations, scale-by-scale, over roughly four decades. We present a detailed quantitative analysis of scaling laws in the viscous, inertial and integral range, supporting the existence of a Bolgiano-like inertial scaling, as expected in 2d systems. We also discuss the presence of small/large intermittent deviation to the scaling of velocity/temperature fluctuations and the Rayleigh dependency of gradients flatness.

L. Biferale; F. Mantovani; M. Sbragaglia; A. Scagliarini; F. Toschi; R. Tripiccione

2010-09-28T23:59:59.000Z

299

The High Resolution X-Ray Imaging Detector Planes for the MIRAX Mission  

E-Print Network (OSTI)

The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5-200 keV) survey of Galactic X-ray transient sources. In the current configuration, MIRAX will carry a set of four coded-mask telescopes with high spatial resolution Cadmium Zinc Telluride (CZT) detector planes, each one consisting of an array of 64 closely tiled CZT pixelated detectors. Taken together, the four telescopes will have a total detection area of 959 cm^2, a large field of view (60x60 degrees FWHM), high angular resolution for this energy range (6 arcmin) and very good spectral resolution (~2 keV @ 60 keV). A stratospheric balloon-borne prototype of one of the MIRAX telescopes has been developed, tested and flown by the Harvard-Smithsonian Center for Astrophysics (CfA) as part of the ProtoEXIST program. In this paper we show results of validation and calibration tests with individual CZT detectors of the ProtoEXIST second generation experiment ...

Rodrigues, Barbara H G; Allen, Branden; Hong, Jaesub; Barthelmy, Scott; Braga, Joao; D'Amico, Flavio; Rothschild, Richard E

2013-01-01T23:59:59.000Z

300

Site characterization: a spatial estimation approach  

SciTech Connect

In this report the application of spatial estimation techniques or kriging to groundwater aquifers and geological borehole data is considered. The adequacy of these techniques to reliably develop contour maps from various data sets is investigated. The estimator is developed theoretically in a simplified fashion using vector-matrix calculus. The practice of spatial estimation is discussed and the estimator is then applied to two groundwater aquifer systems and used also to investigate geological formations from borehole data. It is shown that the estimator can provide reasonable results when designed properly.

Candy, J.V.; Mao, N.

1980-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "finer spatial resolution" 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

Generalised Recurrence Plot Analysis for Spatial Data  

E-Print Network (OSTI)

Recurrence plot based methods are highly efficient and widely accepted tools for the investigation of time series or one-dimensional data. We present an extension of the recurrence plots and their quantifications in order to study recurrent structures in higher-dimensional spatial data. The capability of this extension is illustrated on prototypical 2D models. Next, the tested and proved approach is applied to assess the bone structure from CT images of human proximal tibia. We find that the spatial structures in trabecular bone become more self-similar during the bone loss in osteoporosis.

Norbert Marwan; Juergen Kurths; Peter Saparin

2006-06-20T23:59:59.000Z

302

Coherence vortices in one spatial dimension  

SciTech Connect

Coherence vortices are screw-type topological defects in the phase of Glauber's two-point degree of quantum coherence, associated with pairs of spatial points at which an ensemble-averaged stochastic quantum field is uncorrelated. Coherence vortices may be present in systems whose dimensionality is too low to support spatial vortices. We exhibit lattices of such quantum-coherence phase defects for a one-dimensional model quantum system. We discuss the physical meaning of coherence vortices and propose how they may be realized experimentally.

Simula, Tapio P.; Paganin, David M. [School of Physics, Monash University, Victoria 3800 (Australia)

2011-11-15T23:59:59.000Z

303

Current Status of High Resolution Column Technology for Gas Chromatography  

Science Journals Connector (OSTI)

......work in high-resolution gas-solid chromatography...developments in high- resolution gas chromatographic column...illary or high-resolution gas chromatography. Of these...column material is its high cost compared to glass columns...re sulting from column production, and requires deactivation......

Mary A. Kaiser; Matthew S. Klee

1986-09-01T23:59:59.000Z

304

Digital Control of Resonant Converters: Enhancing Frequency Resolution by Dithering  

E-Print Network (OSTI)

-resolution frequency drive when the quality factor of the network is high or to avoid limit cycle oscillations resolution enhancer for resonant network drive. I. INTRODUCTION In a variety of applications, variable ballasts piezoelectric devices) [1-3]. In such cases, the frequency resolution of the drive is crucial

305

Spatial Data Structures Spatial data structures describe the rules that are used to represent geographic data in geographic  

E-Print Network (OSTI)

Spatial Data Structures Spatial data structures describe the rules that are used to represent depending on those beneath it: · Conceptual spatial data models describe how geographic objects (for example, rivers) or phenomena are represented in GIS. · Logical spatial data models describe how geographic data

Stock, Kristin

306

High Resolution BPM for Linear Colliders  

SciTech Connect

A high resolution Beam Position Monitor (BPM) is necessary for the beam-based alignment systems of high energy and low emittance electron linacs. Such a monitor is developed in the framework of the European CARE/SRF programme, in a close collaboration between DESY and CEA/DSM/DAPNIA. This monitor is a radiofrequency re-entrant cavity, which can be used either at room or cryogenic temperature, in an environment where dust particle contamination has to be avoided, such as superconducting cavities in a cryomodule. A first prototype of a re-entrant BPM has already delivered measurements at 2K. inside the first cryomodule (ACC1) on the TESLA Test Facility 2 (TTF2). The performances of this BPM are analyzed both experimentally and theoretically, and the limitations of this existing system clearly identified. A new cavity and new electronics have been designed in order to improve the position resolution down to 1 {mu}m and the damping time down to 10 ns.

Simon, C.; Chel, S.; Luong, M.; Napoly, O.; Novo, J.; Roudier, D. [Centre a l'Energie Atomique/Saclay, DSM/DAPNIA/SACM, F91191 Gif-sur-Yvette Cedex (France); Baboi, N.; Noelle, D.; Mildner, N.; Zapfe, K. [Deutsches Elektronen Synchroton, Notkestasse 85, D-22603 Hamburg (Germany); Rouviere, N. [Centre National de Recherche Scientifique, IN2P3 - IPN/Orsay, F91406 Orsay Cedex (France)

2006-11-20T23:59:59.000Z

307

WHOLE CELL TOMOGRAPHY/MOLECULAR BIOLOGY/STRUCTURAL BIOLOGY: Affordable x-ray microscopy with nanoscale resolution  

SciTech Connect

Biological research spans 10 orders of magnitude from angstroms to meters. While electron microscopy can reveal structural details at most of these spatial length scales, transmission electron tomography only reliably reconstructs three-dimensional (3-D) volumes of cellular material with a spatial resolution between 1-5 nm from samples less than 500 nm thick1. Most biological cells are 2-30 times thicker than this threshold, which means that a cell must be cut into consecutive slices with each slice reconstructed individually in order to approximate the contextual information of the entire cell. Fortunately, due to a larger penetration depth2, X-ray computed tomography bypasses the need to physically section a cell and enables imaging of intact cells and tissues on the micrometer or larger scale with tens to hundreds of nanometer spatial resolution. While the technique of soft x-ray microscopy has been extensively developed in synchrotron facilities, advancements in laboratory x-ray source designs now increase its accessibility by supporting commercial systems suitable for a standard laboratory. In this paper, we highlight a new commercial compact cryogenic soft x-ray microscope designed for a standard laboratory setting and explore its capabilities for mesoscopic investigations of intact prokaryotic and eukaryotic cells.

Evans, James E.; Blackborow, Paul; Horne, Stephen J.; Gelb, Jeff

2013-03-01T23:59:59.000Z

308

Alleviating spatial conflict between people and biodiversity  

E-Print Network (OSTI)

settlements are expanding in species-rich regions and pose a serious threat to biodiversity conservation. We to the conservation implications of where people live. Human settlement patterns impact biodiversity directly (eAlleviating spatial conflict between people and biodiversity Gary W. Luck* , Taylor H. Ricketts

Vermont, University of

309

SPATIAL LOGIC + TEMPORAL LOGIC =? Roman Kontchakov  

E-Print Network (OSTI)

are some standard spatial and tem- poral logics, and + is some `operator' combining these two logics power of the component logics are related to the complexity and expressiveness of the resulting spatio-temporal logic x under various combination operators +. #12;2 To convey the flavour of the problems we are facing

Kurucz, Agi

310

SPATIAL LOGIC+TEMPORAL LOGIC=? Roman Kontchakov  

E-Print Network (OSTI)

are some standard spatial and tem­ poral logics, and + is some `operator' combining these two logics power of the component logics are related to the complexity and expressiveness of the resulting spatio­temporal logic x under various combination operators +. #12; 2 To convey the flavour of the problems we

Zakharyaschev, Michael

311

Statistical Exposure Estimation Spatial Confounding Bias  

E-Print Network (OSTI)

, and 3 Account for spatial correlation in the health outcome data. Applications include air pollution Epidemiology Estimates of chronic health effects of air pollution are identified from cross-sectional (i Exposure Estimation Methods for Air Pollution Often researchers estimate ambient concentrations and use

Paciorek, Chris

312

Oracle Spatial and Graph Jayant Sharma  

E-Print Network (OSTI)

and Multimodal Networks ·Drive Time Polygon Analysis ·Trade Area Management ·Service Delivery Optimization ·Water affiliates. All rights reserved.13 Each mode (car, bus, rail, bike, etc) modeled as a separate network Performance for Spatial Workloads o Exploits Exadata's processing power, bandwidth, parallelism, security

Shahabi, Cyrus

313

Regulation mechanisms in spatial stochastic development models  

E-Print Network (OSTI)

The aim of this paper is to analyze different regulation mechanisms in spatial continuous stochastic development models. We describe the density behavior for models with global mortality and local establishment rates. We prove that the local self-regulation via a competition mechanism (density dependent mortality) may suppress a unbounded growth of the averaged density if the competition kernel is superstable.

Dmitri Finkelshtein; Yuri Kondratiev

2008-09-04T23:59:59.000Z

314

A Spatial Computing Architecture Implementing Computation Circuits  

E-Print Network (OSTI)

A Spatial Computing Architecture for Implementing Computation Circuits David Grant Supervisor: Dr Architecture Tools Preliminary Results Conclusions #12;3 Introduction Computational Circuits Software MB of memory ­ Add a few million gates ??? #12;5 Architecture and Tools to implement computational

Lemieux, Guy

315

GIS, SPATIAL STATISTICAL GRAPHICS, AND FOREST HEALTH.  

E-Print Network (OSTI)

1 GIS, SPATIAL STATISTICAL GRAPHICS, AND FOREST HEALTH. James J. Majure, Noel Cressie, Dianne Cook, and Jürgen Symanzik ABSTRACT This paper discusses the use of a geographic information systems (GIS), Arcview, into a geographic information system (GIS), Arcview 2.1 (ESRI 1995), and its use in the statistical analysis of spa

Symanzik, Jürgen

316

Bioinspired Environmental Coordination in Spatial Computing Systems  

E-Print Network (OSTI)

Bioinspired Environmental Coordination in Spatial Computing Systems Justin Werfel jkwerfel tissues. We suggest in closing a classification scheme for capabilities of environmental elements of environmental elements that we hope will aid the future study and design of such systems. This principle

Napp, Nils

317

2, 18931923, 2005 Distance in spatial  

E-Print Network (OSTI)

maps with daily or better resolution are necessary for investigation of the climatology of extreme as possible (e.g. in climatology). The back-bone of these maps are rain gauge data since the reliability monitoring product of the Global Precipitation Climatology Centre (http://gpcc.dwd.de) is based on about 6000

Paris-Sud XI, Université de

318

The high resolution X-ray imaging detector planes for the MIRAX mission  

Science Journals Connector (OSTI)

The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5–200 keV) survey of Galactic X-ray transient sources. In the current configuration, MIRAX will carry a set of four coded-masks telescopes with high spatial resolution Cadmium Zinc Telluride (CZT) detector planes, each one consisting of an array of 64 closely tiled CZT pixelated detectors. Taken together, the four telescopes will have a total detection area of 959 cm2, a large field of view (60° ? 60° FWHM), high angular resolution for this energy range (6 arcmin) and very good spectral resolution ( ~ 2 keV @ 60 keV). A stratospheric balloon-borne prototype of one of the MIRAX telescopes has been developed, tested and flown by the Harvard-Smithsonian Center for Astrophysics (CfA) as part of the ProtoEXIST program. In this paper we show results of validation and calibration tests with individual CZT detectors of the ProtoEXIST second generation experiment (P2). Each one of 64 detector units of the P2 detector plane consists of an ASIC, developed by Caltech for the NuSTAR telescope, hybridized to a CZT crystal with 0.6 mm pixel size. The performance of each detector was evaluated using radioactive sources in the laboratory. The calibration results show that the P2 detectors have average energy resolution of ~ 2.1 keV @ 60 keV and 2.3 @ 122 keV. P2 was also successfully tested on near-space environment on a balloon flight, demonstrating the detector unit readiness for integration on a space mission telescope, as well as satisfying all MIRAX mission requirements.

B H G Rodrigues; J E Grindlay; B Allen; J Hong; S Barthelmy; J Braga; F D'Amico; R E Rothschild

2013-01-01T23:59:59.000Z

319

The High Resolution X-Ray Imaging Detector Planes for the MIRAX Mission  

E-Print Network (OSTI)

The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5-200 keV) survey of Galactic X-ray transient sources. In the current configuration, MIRAX will carry a set of four coded-mask telescopes with high spatial resolution Cadmium Zinc Telluride (CZT) detector planes, each one consisting of an array of 64 closely tiled CZT pixelated detectors. Taken together, the four telescopes will have a total detection area of 959 cm^2, a large field of view (60x60 degrees FWHM), high angular resolution for this energy range (6 arcmin) and very good spectral resolution (~2 keV @ 60 keV). A stratospheric balloon-borne prototype of one of the MIRAX telescopes has been developed, tested and flown by the Harvard-Smithsonian Center for Astrophysics (CfA) as part of the ProtoEXIST program. In this paper we show results of validation and calibration tests with individual CZT detectors of the ProtoEXIST second generation experiment (P2). Each one of 64 detector units of the P2 detector plane consists of an ASIC, developed by Caltech for the NuSTAR telescope, hybridized to a CZT crystal with 0.6 mm pixel size. The performance of each detector was evaluated using radioactive sources in the laboratory. The calibration results show that the P2 detectors have average energy resolution of ~2.1 keV @ 60 keV and ~2.3 keV @ 122 keV. P2 was also successfully tested on near-space environment on a balloon flight, demonstrating the detector unit readiness for integration on a space mission telescope, as well as satisfying all MIRAX mission requirements.

Barbara H. G. Rodrigues; Jonathan E. Grindlay; Branden Allen; Jaesub Hong; Scott Barthelmy; Joao Braga; Flavio D'Amico; Richard E. Rothschild

2013-08-14T23:59:59.000Z

320

Using high-resolution displays for high-resolution cardiac data  

Science Journals Connector (OSTI)

...builds on the appreciation that medical interventions need to be tailored...disease. Increasingly detailed medical imaging data require new tools...These tools need to support medical decision-making in real time...operation under normal room lighting. A broad overview of high-resolution...

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "finer spatial resolution" 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

Statistical Modelling of Spatial Extremes --Mathieu Ribatet Jstar'11 1 / 37 Statistical Modelling of Spatial Extremes  

E-Print Network (OSTI)

Modelling of Spatial Extremes Davison, A.C. Padoan, S.A. Ribatet, M. Institute of Mathematics, EPFL 2010 50100150 Gruningen-Hinwil 1970 1990 2010 50100150 Hallau-Kleine Scheid 1970 1990 2010 50100150

Ribatet, Mathieu

322

E-Print Network 3.0 - angular resolution systems Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Resolution of the Pierre... the angular resolution of the Pierre Auger Detector using data collected from January 2004 to May 2005... . We have determined the angular resolution...

323

The effects of Doppler broadening and detector resolution on the performance of three-stage Compton cameras  

SciTech Connect

Purpose: The authors investigated how the characteristics of the detectors used in a three-stage Compton camera (CC) affect the CC's ability to accurately measure the emission distribution and energy spectrum of prompt gammas (PG) emitted by nuclear de-excitations during proton therapy. The detector characteristics they studied included the material (high-purity germanium [HPGe] and cadmium zinc telluride [CZT]), Doppler broadening (DB), and resolution (lateral, depth, and energy). Methods: The authors simulated three-stage HPGe and CZT CCs of various configurations, detecting gammas from point sources with energies ranging from 0.511 to 7.12 MeV. They also simulated a proton pencil beam irradiating a tissue target to study how the detector characteristics affect the PG data measured by CCs in a clinical proton therapy setting. They used three figures of merit: the distance of closest approach (DCA) and the point of closest approach (PCA) between the measured and actual position of the PG emission origin, and the calculated energy resolution. Results: For CCs with HPGe detectors, DB caused the DCA to be greater than 3 mm for 14% of the 6.13 MeV gammas and 20% of the 0.511 MeV gammas. For CCs with CZT detectors, DB caused the DCA to be greater than 3 mm for 18% of the 6.13 MeV gammas and 25% of the 0.511 MeV gammas. The full width at half maximum (FWHM) of the PCA in the z-caret direction for HPGe and CZT detectors ranged from 1.3 to 0.4 mm for gammas with incident energy ranging from 0.511 to 7.12 MeV. For CCs composed of HPGe detectors, the resolution of incident gamma energy calculated by the CC ranged from 6% to 1% for gammas with true incident energies from 0.511 to 7.12 MeV. For CCs composed of CZT detectors, the resolution of gamma energy calculated by the CC ranged from 10% to 1% for gammas with true incident energies from 0.511 to 7.12 MeV. For HPGe and CZT CCs in which all detector effect were included, the DCA was less than 3 mm for 75% and 68% of the detected gammas, respectively, and restricting gammas to those having energy greater than 2.0 MeV increased these percentages to 83% and 77% for HPGe and CZT, respectively. Distributions of the true gamma origins and the PCA after detector characteristics had been included showed good agreement on beam range and some loss of resolution for the lateral profile of the PG emission. Characteristic energy lines were evident in the calculated gamma energy spectrum. Conclusions: The authors found the following: (1) DB is the dominant source of spatial and energy resolution loss in the CCs at all energy levels; (2) the largest difference in the spatial resolution of HPGe and CZT CCs is that the spatial resolution distributions of CZT have broader tails. The differences in the FWHM of these distributions are small; (3) the energy resolution of both HPGe and CZT three-stage CCs is adequate for PG spectroscopy; and (4) restricting the gammas to those having energy greater than 2.0 MeV can improve the achievable image resolution.

Mackin, Dennis; Polf, Jerimy; Peterson, Steve; Beddar, Sam [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States); Department of Physics, 145 Physical Sciences II, Oklahoma State University, Stillwater, Oklahoma 74078 (United States); Department of Physics, University of Cape Town, Rondebosch 7701 (South Africa); Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States)

2013-01-15T23:59:59.000Z

324

ON THE IMPACT OF SUPER RESOLUTION WSR-88D DOPPLER RADAR DATA ASSIMILATION ON HIGH RESOLUTION NUMERICAL MODEL FORECASTS  

SciTech Connect

Assimilation of radar velocity and precipitation fields into high-resolution model simulations can improve precipitation forecasts with decreased 'spin-up' time and improve short-term simulation of boundary layer winds (Benjamin, 2004 & 2007; Xiao, 2008) which is critical to improving plume transport forecasts. Accurate description of wind and turbulence fields is essential to useful atmospheric transport and dispersion results, and any improvement in the accuracy of these fields will make consequence assessment more valuable during both routine operation as well as potential emergency situations. During 2008, the United States National Weather Service (NWS) radars implemented a significant upgrade which increased the real-time level II data resolution to 8 times their previous 'legacy' resolution, from 1 km range gate and 1.0 degree azimuthal resolution to 'super resolution' 250 m range gate and 0.5 degree azimuthal resolution (Fig 1). These radar observations provide reflectivity, velocity and returned power spectra measurements at a range of up to 300 km (460 km for reflectivity) at a frequency of 4-5 minutes and yield up to 13.5 million point observations per level in super-resolution mode. The migration of National Weather Service (NWS) WSR-88D radars to super resolution is expected to improve warning lead times by detecting small scale features sooner with increased reliability; however, current operational mesoscale model domains utilize grid spacing several times larger than the legacy data resolution, and therefore the added resolution of radar data is not fully exploited. The assimilation of super resolution reflectivity and velocity data into high resolution numerical weather model forecasts where grid spacing is comparable to the radar data resolution is investigated here to determine the impact of the improved data resolution on model predictions.

Chiswell, S

2009-01-11T23:59:59.000Z

325

Principles of spatial database analysis and design This chapter covers the fundamentals of spatial database analysis and design, It begins by  

E-Print Network (OSTI)

, and by a description of the process to follow for spatial databases. Characteristics of spatial databases are discussed-server solutions, intranets or spatial data warehouses. Gone are the days of a spatial database implemented solely

326

Spatial and Spectral evolution of Turbulence Spectra  

SciTech Connect

We present a general formulation of a theory of spreading of turbulence based on nonlinear mode couplings, which is inherently linked to spectral evolution. We present a derivation from simple two-field perspective based upon a gradien diffusion hypothesis, justified by a two scale direct interaction approximation (TSDIA) for weak turbulence. The complexity and anisotropy of spatial and spectral dynamics, however, limits our analysis to examination of different classes of triad interactions. We demonstrate that radially extended eddys, are the most effective structures in promoting spreading of turbulence. Thus, spectral evolution that tends towards such eddies, facilitate spatial spreading. We also show that, in a two field model, due to their respective spectral tendencies, internal energy spreads faster than kinetic energy.

Guercan, Oe. D.; Diamond, P. H. [Center for Astrophysics and Space Sciences, La Jolla, CA 92093-0424 (United States); Department of Physics University of California at San Diego, La Jolla, CA 92093-0424 (United States); Department of Physics, University of California at San Diego, La Jolla, CA 92093-0319 (United States); Hahm, T. S. [Princeton Plasma Physics Laboratory, Princeton, NJ 08543-0451 (United States)

2006-11-30T23:59:59.000Z

327

Spatial distribution of the air temperature in mountainous areas using satellite thermal infra-red data  

Science Journals Connector (OSTI)

Understanding the spatial distribution of air temperature in mountainous areas is essential in hydrological modelling. In the Moroccan High-Atlas range, the meteorological stations network is sparse. In order to get additional information, we investigated the thermal infrared data supplied by the Enhanced Thematic Mapper (ETM + ) sensor onboard the Landsat 7 satellite. The brightness temperature derived from ETM+ images is used as a proxy for air temperature to set up a model that describes its spatial distribution. This model accounts for sun location and topographic characteristics derived from the SRTM digital elevation model. It was evaluated on the Rheraya watershed, a 225-km2 region located within the semi-arid High-Atlas mountain range, using two different sources of data. The first data set consists in in-situ air temperature collected by meteorological stations installed during the experiment at various altitudes from 1400 to 3200 m. The second data set is satellite estimates of snow-covered areas (SCA) derived from MODIS images over the whole catchment at 500 m spatial resolution.

Abdelghani Boudhar; Benoît Duchemin; Lahoucine Hanich; Gilles Boulet; Abdelghani Chehbouni

2011-01-01T23:59:59.000Z

328

Evaluation of a spatially-distributed Thornthwaite water-balance model  

SciTech Connect

A small watershed of low relief in coastal New Hampshire was divided into hydrologic sub-areas in a geographic information system on the basis of soils, sub-basins and remotely-sensed landcover. Three variables were spatially modeled for input to 49 individual water-balances: available water content of the root zone, water input and potential evapotranspiration (PET). The individual balances were weight-summed to generate the aggregate watershed-balance, which saw 9% (48--50 mm) less annual actual-evapotranspiration (AET) compared to a lumped approach. Analysis of streamflow coefficients suggests that the spatially-distributed approach is more representative of the basin dynamics. Variation of PET by landcover accounted for the majority of the 9% AET reduction. Variation of soils played a near-negligible role. As a consequence of the above points, estimates of landcover proportions and annual PET by landcover are sufficient to correct a lumped water-balance in the Northeast. If remote sensing is used to estimate the landcover area, a sensor with a high spatial resolution is required. Finally, while the lower Thornthwaite model has conceptual limitations for distributed application, the upper Thornthwaite model is highly adaptable to distributed problems and may prove useful in many earth-system models.

Lough, J.A. (Univ. of New Hampshire, Durham, NH (United States). Complex Systems Research Center)

1993-03-01T23:59:59.000Z

329

High-resolution spectroscopy for Doppler-broadening ion temperature measurements of implosions at the National Ignition Facility  

SciTech Connect

Future implosion experiments at the national ignition facility (NIF) will endeavor to simultaneously measure electron and ion temperatures with temporal and spatial resolution in order to explore non-equilibrium temperature distributions and their relaxation toward equilibrium. In anticipation of these experiments, and with understanding of the constraints of the NIF facility environment, we have explored the use of Doppler broadening of mid-Z dopant emission lines, such as krypton He-{alpha} at 13 keV, as a diagnostic of time- and potentially space-resolved ion temperature. We have investigated a number of options analytically and with numerical raytracing, and we have identified several promising candidate spectrometer designs that meet the expected requirements of spectral and temporal resolution and data signal-to-noise ratio for gas-filled exploding pusher implosions, while providing maximum flexibility for use on a variety of experiments that potentially include burning plasma.

Koch, J. A.; Stewart, R. E.; Beiersdorfer, P.; Shepherd, R.; Schneider, M. B.; Miles, A. R.; Scott, H. A.; Smalyuk, V. A.; Hsing, W. W. [Lawrence Livermore National Laboratory, P.O. Box 808, L-493, Livermore, California 94550 (United States)

2012-10-15T23:59:59.000Z

330

Multi-model adaptive spatial hypertext  

E-Print Network (OSTI)

of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved as to style and content by: ________________________________ Frank M. Shipman, III (Chair of Committee) ________________________________ Richard K. Furuta (Member...-Model Adaptive Spatial Hypertext. (December 2004) Luis Francisco-Revilla, B.S., Universidad Iberoamericana; M.S., Texas A&M University Chair of Advisory Committee: Dr. Frank M. Shipman, III Information delivery on the Web often relies on general purpose Web...

Francisco-Revilla, Luis

2005-02-17T23:59:59.000Z

331

Diagnosing spatial variation patterns in manufacturing processes  

E-Print Network (OSTI)

. Outline of the dissertation A class of signal processing methods, usually referred to as blind source separation methods (Cardoso, 1998; Haykin, 2000), appears to provide a more black- box approach to identifying un-modeled manufacturing variation... to describe a number of related signal processing problems in which there is an array of spatially distributed sensors, each of which picks up signals from a number of distinct, signal-emitting sources (Cardoso, 1998; Haykin, 2000). Applications include...

Lee, Ho Young

2004-09-30T23:59:59.000Z

332

Multicriteria optimization of the spatial dose distribution  

SciTech Connect

Purpose: Treatment planning for radiation therapy involves trade-offs with respect to different clinical goals. Typically, the dose distribution is evaluated based on few statistics and dose–volume histograms. Particularly for stereotactic treatments, the spatial dose distribution represents further criteria, e.g., when considering the gradient between subregions of volumes of interest. The authors have studied how to consider the spatial dose distribution using a multicriteria optimization approach.Methods: The authors have extended a stepwise multicriteria optimization approach to include criteria with respect to the local dose distribution. Based on a three-dimensional visualization of the dose the authors use a software tool allowing interaction with the dose distribution to map objectives with respect to its shape to a constrained optimization problem. Similarly, conflicting criteria are highlighted and the planner decides if and where to relax the shape of the dose distribution.Results: To demonstrate the potential of spatial multicriteria optimization, the tool was applied to a prostate and meningioma case. For the prostate case, local sparing of the rectal wall and shaping of a boost volume are achieved through local relaxations and while maintaining the remaining dose distribution. For the meningioma, target coverage is improved by compromising low dose conformality toward noncritical structures. A comparison of dose–volume histograms illustrates the importance of spatial information for achieving the trade-offs.Conclusions: The results show that it is possible to consider the location of conflicting criteria during treatment planning. Particularly, it is possible to conserve already achieved goals with respect to the dose distribution, to visualize potential trade-offs, and to relax constraints locally. Hence, the proposed approach facilitates a systematic exploration of the optimal shape of the dose distribution.

Schlaefer, Alexander [Medical Robotics Group, Universität zu Lübeck, Lübeck 23562, Germany and Institute of Medical Technology, Hamburg University of Technology, Hamburg 21073 (Germany)] [Medical Robotics Group, Universität zu Lübeck, Lübeck 23562, Germany and Institute of Medical Technology, Hamburg University of Technology, Hamburg 21073 (Germany); Viulet, Tiberiu [Medical Robotics Group, Universität zu Lübeck, Lübeck 23562 (Germany)] [Medical Robotics Group, Universität zu Lübeck, Lübeck 23562 (Germany); Muacevic, Alexander; Fürweger, Christoph [European CyberKnife Center Munich, Munich 81377 (Germany)] [European CyberKnife Center Munich, Munich 81377 (Germany)

2013-12-15T23:59:59.000Z

333

Magnetoacoustic tomography with magnetic induction for high-resolution bioimepedance imaging through vector source reconstruction under the static field of MRI magnet  

SciTech Connect

Purpose: Magnetoacoustic tomography with magnetic induction (MAT-MI) is an imaging modality to reconstruct the electrical conductivity of biological tissue based on the acoustic measurements of Lorentz force induced tissue vibration. This study presents the feasibility of the authors' new MAT-MI system and vector source imaging algorithm to perform a complete reconstruction of the conductivity distribution of real biological tissues with ultrasound spatial resolution. Methods: In the present study, using ultrasound beamformation, imaging point spread functions are designed to reconstruct the induced vector source in the object which is used to estimate the object conductivity distribution. Both numerical studies and phantom experiments are performed to demonstrate the merits of the proposed method. Also, through the numerical simulations, the full width half maximum of the imaging point spread function is calculated to estimate of the spatial resolution. The tissue phantom experiments are performed with a MAT-MI imaging system in the static field of a 9.4 T magnetic resonance imaging magnet. Results: The image reconstruction through vector beamformation in the numerical and experimental studies gives a reliable estimate of the conductivity distribution in the object with a ?1.5 mm spatial resolution corresponding to the imaging system frequency of 500 kHz ultrasound. In addition, the experiment results suggest that MAT-MI under high static magnetic field environment is able to reconstruct images of tissue-mimicking gel phantoms and real tissue samples with reliable conductivity contrast. Conclusions: The results demonstrate that MAT-MI is able to image the electrical conductivity properties of biological tissues with better than 2 mm spatial resolution at 500 kHz, and the imaging with MAT-MI under a high static magnetic field environment is able to provide improved imaging contrast for biological tissue conductivity reconstruction.

Mariappan, Leo; Hu, Gang [Department of Biomedical Engineering, University of Minnesota, Minnesota 55455 (United States)] [Department of Biomedical Engineering, University of Minnesota, Minnesota 55455 (United States); He, Bin, E-mail: binhe@umn.edu [Department of Biomedical Engineering, University of Minnesota, Minnesota 55455 and Institute of Engineering in Medicine, University of Minnesota, Minnesota 55455 (United States)] [Department of Biomedical Engineering, University of Minnesota, Minnesota 55455 and Institute of Engineering in Medicine, University of Minnesota, Minnesota 55455 (United States)

2014-02-15T23:59:59.000Z

334

Effects of ray profile modeling on resolution recovery in clinical CT  

SciTech Connect

Purpose: Iterative image reconstruction gains more and more interest in clinical routine, as it promises to reduce image noise (and thereby patient dose), to reduce artifacts, or to improve spatial resolution. However, among vendors and researchers, there is no consensus of how to best achieve these goals. The authors are focusing on the aspect of geometric ray profile modeling, which is realized by some algorithms, while others model the ray as a straight line. The authors incorporate ray-modeling (RM) in nonregularized iterative reconstruction. That means, instead of using one simple single needle beam to represent the x-ray, the authors evaluate the double integral of attenuation path length over the finite source distribution and the finite detector element size in the numerical forward projection. Our investigations aim at analyzing the resolution recovery (RR) effects of RM. Resolution recovery means that frequencies can be recovered beyond the resolution limit of the imaging system. In order to evaluate, whether clinical CT images can benefit from modeling the geometrical properties of each x-ray, the authors performed a 2D simulation study of a clinical CT fan-beam geometry that includes the precise modeling of these geometrical properties. Methods: All simulations and reconstructions are performed in native fan-beam geometry. A water phantom with resolution bar patterns and a Forbild thorax phantom with circular resolution patterns representing calcifications in the heart region are simulated. An FBP reconstruction with a Ram–Lak kernel is used as a reference reconstruction. The FBP is compared to iterative reconstruction techniques with and without RM: An ordered subsets convex (OSC) algorithm without any RM (OSC), an OSC where the forward projection is modeled concerning the finite focal spot and detector size (OSC-RM) and an OSC with RM and with a matched forward and backprojection pair (OSC-T-RM, T for transpose). In all cases, noise was matched to be able to focus on comparing spatial resolution. The authors use two different simulation settings. Both are based on the geometry of a typical clinical CT system (0.7 mm detector element size at isocenter, 1024 projections per rotation). Setting one has an exaggerated source width of 5.0 mm. Setting two has a realistically small source width of 0.5 mm. The authors also investigate the transition from setting one to two. To quantify image quality, the authors analyze line profiles through the resolution patterns to define a contrast factor (CF) for contrast-resolution plots, and the authors compare the normalized cross-correlation (NCC) with respect to the ground truth of the circular resolution patterns. To independently analyze whether RM is of advantage, the authors implemented several iterative reconstruction algorithms: The statistical iterative reconstruction algorithm OSC, the ordered subsets simultaneous algebraic reconstruction technique (OSSART) and another statistical iterative reconstruction algorithm, denoted with ordered subsets maximum likelihood (OSML) algorithm. All algorithms were implemented both without RM (denoted as OSC, OSSART, and OSML) and with RM (denoted as OSC-RM, OSSART-RM, and OSML-RM). Results: For the unrealistic case of a 5.0 mm focal spot the CF can be improved by a factor of two due to RM: the 4.2 LP/cm bar pattern, which is the first bar pattern that cannot be resolved without RM, can be easily resolved with RM. For the realistic case of a 0.5 mm focus, all results show approximately the same CF. The NCC shows no significant dependency on RM when the source width is smaller than 2.0 mm (as in clinical CT). From 2.0 mm to 5.0 mm focal spot size increasing improvements can be observed with RM. Conclusions: Geometric RM in iterative reconstruction helps improving spatial resolution, if the ray cross-section is significantly larger than the ray sampling distance. In clinical CT, however, the ray is not much thicker than the distance between neighboring ray centers, as the focal spot size is small and detector crosstalk is negligi

Hofmann, Christian [Institute of Medical Physics, Friedrich–Alexander University (FAU), Erlangen, Bavaria 91052 (Germany)] [Institute of Medical Physics, Friedrich–Alexander University (FAU), Erlangen, Bavaria 91052 (Germany); Knaup, Michael [Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg 69120 (Germany)] [Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg 69120 (Germany); Kachelrieß, Marc, E-mail: marc.kachelriess@dkfz-heidelberg.de [Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg 69120, Germany and Institute of Medical Physics, Friedrich–Alexander University (FAU), Erlangen, Bavaria 91052 (Germany)] [Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg 69120, Germany and Institute of Medical Physics, Friedrich–Alexander University (FAU), Erlangen, Bavaria 91052 (Germany)

2014-02-15T23:59:59.000Z

335

Typograph: Multiscale Spatial Exploration of Text Documents  

SciTech Connect

Visualizing large document collections using a spatial layout of terms can enable quick overviews of information. These visual metaphors (e.g., word clouds, tag clouds, etc.) traditionally show a series of terms organized by space-filling algorithms. However, often lacking in these views is the ability to interactively explore the information to gain more detail, and the location and rendering of the terms are often not based on mathematical models that maintain relative distances from other information based on similarity metrics. In this paper, we present Typograph, a multi-scale spatial exploration visualization for large document collections. Based on the term-based visualization methods, Typograh enables multiple levels of detail (terms, phrases, snippets, and full documents) within the single spatialization. Further, the information is placed based on their relative similarity to other information to create the “near = similar” geographic metaphor. This paper discusses the design principles and functionality of Typograph and presents a use case analyzing Wikipedia to demonstrate usage.

Endert, Alexander; Burtner, Edwin R.; Cramer, Nicholas O.; Perko, Ralph J.; Hampton, Shawn D.; Cook, Kristin A.

2013-10-06T23:59:59.000Z

336

The Spatial Structure of Transnational Human Activity  

E-Print Network (OSTI)

Recent studies have shown that the spatial structures of animal displacements and local-scale human motion follow L\\'{e}vy flights. Whether transnational human activity (THA) also exhibits such a pattern has however not been thoroughly examined as yet. To fill this gap, this article examines the planet-scale spatial structure of THA (a) across eight types of mobility and communication and (b) in its development over time. Combining data from various sources, it is shown that the spatial structure of THA can indeed be approximated by L\\'{e}vy flights with heavy tails that obey power laws. Scaling exponent and power-law fit differ by type of THA, being highest in refuge-seeking and tourism and lowest in student exchange. Variance in the availability of resources and opportunities for satisfying associated needs appears to explain these differences. Over time, the L\\'{e}vy-flight pattern remains intact and remarkably stable, contradicting the popular idea that socio-technological trends lead to a "death of dista...

Deutschmann, Emanuel

2015-01-01T23:59:59.000Z

337

Spatially Resolved ? Emission from Laser Fusion Targets  

Science Journals Connector (OSTI)

The ?-particle emission from laser-compressed, D-T-filled microshells has been imaged using a zone-plate-coded imaging technique. Nominal image resolution was 10 ?m. Approximately 97% of the recorded ? emission was found to originate within a thermonuclear burn region of diameter roughly 13 that of the original target. The full width at half-maximum of the burn region had a diameter roughly 16 that of the target.

N. M. Ceglio and L. W. Coleman

1977-07-04T23:59:59.000Z

338

Application of high?resolution interferometry to plasma density measurements on TEXT?Upgrade  

Science Journals Connector (OSTI)

High?resolution interferometry using far?infrared laser radiation is employed on TEXT?Upgrade to measure the spatial and temporal evolution of the electron density profile as well as small?scale perturbations. Perturbations to the electron density induced by naturally occurring sawtooth oscillations or externally imposed gas modulations can be used to ascertain the local particle flux and transport coefficients in the plasma interior. Density islands associated with Mirnov activity can also be resolved providing detailed information on the density profile at island X and O points. Implementation of a second orthogonal view will allow accurate determination of the density profile in the various asymmetric plasma configurations of TEXT?Upgrade.

D. L. Brower; Y. Jiang; W. A. Peebles; S. Burns; N. C. Luhmann Jr.

1992-01-01T23:59:59.000Z

339

High-resolution mapping of quantum efficiency of silicon photodiode via optical-feedback laser microthermography  

SciTech Connect

We map the external quantum efficiency (QE) distribution of a silicon photodiode (PD) sample via a thermographic imaging technique based on optical-feedback laser confocal microscopy. An image pair consisting of the confocal reflectance image and the 2D photocurrent map is simultaneously acquired to delineate the following regions of interest on the sample: the substrate, the n-type region, the pn overlay, and the bonding pad. The 2D QE distribution is derived from the photocurrent map to quantify the optical performance of these sites. The thermal integrity of the sample is then evaluated by deriving the rate of change of QE with temperature T at each point on the silicon PD. These gradient maps function not only as stringent measures of local thermal QE activity but they also expose probable defect locations on the sample at high spatial resolution - a capability that is not feasible with existing bulk measurement techniques.

Cemine, Vernon Julius; Blanca, Carlo Mar; Saloma, Caesar

2006-09-20T23:59:59.000Z

340

Optimization of <= 200 um pitch CZT detectors for future high-resolution X-ray instrumentation in astrophysics  

E-Print Network (OSTI)

Cadmium Zinc Telluride and Cadmium Telluride are the detector materials of choice for the detection of X-rays in the X-ray energy band E >= 5keV with excellent spatial and spectral resolution and without cryogenic cooling. Owing to recent breakthroughs in grazing incidence mirror technology, next-generation hard X-ray telescopes will achieve angular resolution between 5 and 10 arc seconds - about an order of magnitude better than that of the NuSTAR hard X-ray telescope. As a consequence, the next generation of X-ray telescopes will require pixelated X-ray detectors with pixels on a grid with a lattice constant of energy threshold of less than 5keV and an energy resolution of less than one keV. The science drivers for a high angular-resolution X-ray mission include studies and measurements of black hole spins, the cosmic evolution of super-massive black holes, active galactic nuclei feedback, and the behaviour of matter at very high densities. In this...

Zajczyk, Anna; Dowkontt, Paul; Guo, Qingzhen; Kislat, Fabian; Krawczynski, Henric; De Geronimo, Gianluigi; Li, Shaorui; Beilicke, Matthias

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "finer spatial resolution" 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

A Spatial View of Ensemble Spread in Convection Permitting Ensembles  

Science Journals Connector (OSTI)

With movement towards kilometer scale ensembles, new techniques are needed for their characterization. We present a new methodology for detailed spatial ensemble characterization using the Fractions Skill Score (FSS). To evaluate spatial forecast ...

Seonaid R. A. Dey; Giovanni Leoncini; Nigel M. Roberts; Robert S. Plant; Stefano Migliorini

342

Rapid Spatial Distribution Seismic Loss Analysis for Multistory Buildings  

E-Print Network (OSTI)

Tall building frames that respond to large seismic ground motions tend to have significant spatial variability of damage over their height, often with a concentration of that damage in the lower stories. In spite of this spatial variability...

Deshmukh, Pankaj Bhagvatrao

2012-07-16T23:59:59.000Z

343

The Mediterranean Sea under siege: spatial overlap between marine  

E-Print Network (OSTI)

RESEARCH PAPER The Mediterranean Sea under siege: spatial overlap between marine biodiversity of knowledge exists on individual anthropogenic threats that have an impact on marine biodiversity between marine biodiversity and threats is more pronounced and to assess their spatial overlap

Pauly, Daniel

344

High-resolution maps of solar collector performance using a climatological solar radiation model  

SciTech Connect

This paper will present a new methodology for producing estimates of the monthly and annual average performance of different types of flat-plate and concentrating solar collectors. The estimates are made on a uniform spatial grid with 40 km resolution. These estimates should be highly useful both to create maps to facilitate visualization of the solar resource, and as the basic data behind analytical studies of solar resources, deployment scenarios, CO{sub 2} mitigation strategies, and economic assessments. Their initial use of this methodology will be in the continental United States, where supporting data is available to evaluate the model outputs. In future years the authors hope to utilize this technique world-wide, especially in areas where the surface data are lacking. The National Renewable Energy Laboratory (NREL, Golden, CO) has developed the Climatological Solar Radiation (CSR) model to estimate climatological averages of daily-total solar radiation at a 40 km spatial resolution. The CSR model is operational and has been usefully applied to the US as well as several international areas. The model uses, as input, monthly climatological mean values of cloud cover, precipitable water vapor, aerosol optical depth, surface albedo, and total column ozone. These input parameters are available from various sources such as NASA and NCDC (National Climatic Data Center). The outputs from the original version of CSR are monthly mean daily total values of Global Horizontal, Direct Normal, and Diffuse radiation. Their latest revision of the model allows them to calculate the monthly mean output for the various collector types such as tilted flat-plate surfaces, one- and two-axis flat-plate collectors, and concentrating collectors.

George, R.L.; Maxwell, E.L.

1999-07-01T23:59:59.000Z

345

High-Resolution Crack Imaging Reveals Degradation Processes in...  

NLE Websites -- All DOE Office Websites (Extended Search)

Crack Imaging Reveals Degradation Processes in Nuclear Reactor Structural Materials. High-Resolution Crack Imaging Reveals Degradation Processes in Nuclear Reactor Structural...

346

Information capacity and resolution in an optical system  

Science Journals Connector (OSTI)

The concept of invariance of information capacity is discussed and applied to the resolution of an optical system. Methods of obtaining superresolution in microscopy are discussed, and...

Cox, I J; Sheppard, C J R

1986-01-01T23:59:59.000Z

347

Sum Frequency High-Resolution Spectrometer (SFV-VS) | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

generation (SFG) response... Capturing inhomogeneous broadening of the -CN stretch vibration in a Langmuir monolayer with high-resolution spectra and Even though in...

348

High-Resolution Diagrams Now Available | Department of Energy  

Energy Savers (EERE)

28, 2010 - 9:59am Addthis Andrea Spikes Communicator at DOE's National Renewable Energy Laboratory The newest content now available on Energy Savers is high-resolution...

349

High resolution electron microscopic studies on ferrosilite III  

Science Journals Connector (OSTI)

High resolution transmission electron microscopic (HRTEM) studies on ferrosilite (Fs) III confirmed the periodicity nine (p=9) of the tetrahedral chains in this silicate. Various chain periodicit...

M. Czank; B. Simons

1983-05-01T23:59:59.000Z

350

High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone...  

Open Energy Info (EERE)

Caldera Geothermal Region Retrieved from "http:en.openei.orgwindex.php?titleHigh-ResolutionAeromagneticMappingOfVolcanicTerrain,YellowstoneNationalPark&oldid...

351

High-Resolution Aeromagnetic Survey to Image Shallow Faults,...  

Open Energy Info (EERE)

Valley Geothermal Area Regions (0) Retrieved from "http:en.openei.orgwindex.php?titleHigh-ResolutionAeromagneticSurveytoImageShallowFaults,DixieValleyGeothermalField...

352

Merging high resolution geophysical and geochemical surveys to...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

high resolution geophysical and geochemical surveys to reduce exploration risk at Glass Buttes, Oregon Patrick Walsh Ormat Nevada Inc. Innovative technologies May 19, 2010...

353

Methods and workflow for spatial conservation prioritization using Zonation  

Science Journals Connector (OSTI)

Spatial conservation prioritization concerns the effective allocation of conservation action. Its stages include development of an ecologically based model of conservation value, data pre-processing, spatial prioritization analysis, and interpretation ... Keywords: Conservation planning, Decision analysis, Decision support tool, Spatial conservation prioritization, Systematic conservation planning, Zonation software

Joona Lehtomäki; Atte Moilanen

2013-09-01T23:59:59.000Z

354

Relational Formalism for the Management of Spatial Data  

Science Journals Connector (OSTI)

......Formalism for the Management of Spatial...Department of Science, Agricultural...and Computer Science, University...modelling approaches, which have...developed for the management of spatial...Model for the Management of Spatial...Computer Science Department...modelling approaches. In Manolopoulos......

Nikos A. Lorentzos; Jose R. R. Viqueira

2006-01-01T23:59:59.000Z

355

A Polygon-based Methodology for Mining Related Spatial Datasets  

E-Print Network (OSTI)

, such as countries, and in that they can be used for the modeling of spatial events, such as air pollution. MoreoverA Polygon-based Methodology for Mining Related Spatial Datasets Sujing Wang, Chun-Sheng Chen clusters. This paper claims that polygon analysis is particularly useful for mining related, spatial

Eick, Christoph F.

356

Modeling Spatial Dependencies for Mining Geospatial Data: An Introduction  

E-Print Network (OSTI)

Modeling Spatial Dependencies for Mining Geospatial Data: An Introduction Sanjay Chawla \\Lambda Shashi Shekhar \\Lambda Weili Wu \\Lambda Uygar Ozesmi y May 25, 2000 Abstract Spatial data mining databases. Efficient tools for extracting information from spatial data sets can be of importance

Shekhar, Shashi

357

A test for stationarity for irregularly spaced spatial data  

E-Print Network (OSTI)

A test for stationarity for irregularly spaced spatial data Soutir Bandyopadhyay and Suhasini Subba, 2014 Abstract The analysis of spatial data is based on a set of assumptions, which in practice need. In this paper, a test for spatial stationarity for irregularly sampled data is proposed. The test is based

Subba Rao, Suhasini

358

Mining Spatial Data: Opportunities and Challenges of a Relational Approach  

E-Print Network (OSTI)

Mining Spatial Data: Opportunities and Challenges of a Relational Approach D. Malerba1 1: Spatial Data Mining, Multi-Relational Data Mining. Abstract Remote sensing and mobile devices nowadays collect a huge amount of spatial data which have to be analysed in order to discover interesting knowledge

Malerba, Donato

359

Finding Outliers in Models of Spatial Data David W. Scott  

E-Print Network (OSTI)

Finding Outliers in Models of Spatial Data David W. Scott Dept of Statistics, MS-138 Rice achieving final form. For example, outliers can adversely affect fits. In other cases involving spatial data the task of modeling spatial data, and makes us of advanced map visualization tools to understand

Scott, David W.

360

Integration of distributed spatial data in a decision making context  

E-Print Network (OSTI)

Integration of distributed spatial data in a decision making context Christelle Pierkot LIRMM, D deployment of communication networks has facilitated the sharing and exchange of spatial data between sites neither belong to the same organizations, but must cooperate. Spatial data is used to help user

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "finer spatial resolution" 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

Spatial Computing as Intensional Data Parallelism Antoine Spicher, Olivier Michel  

E-Print Network (OSTI)

Spatial Computing as Intensional Data Parallelism Antoine Spicher, Olivier Michel LACL Universit to illustrate this statement. Keywords-spatial computing, collection, data-fields, data flow, declarative definition, intensionnal programming, stream, data parallelism I. SPATIAL COMPUTING It is customary to make

Paris-Sud XI, Université de

362

Confidentiality and spatially explicit data: Concerns and challenges  

E-Print Network (OSTI)

Confidentiality and spatially explicit data: Concerns and challenges Leah K. VanWey* , Ronald R the new threats to the confidentiality of respondent data in spatially explicit social survey or census of ethical and high-quality science using such data: protection of confidentiality, the social­spatial

Columbia University

363

Modeling Spatial-Temporal Binary Data Using Markov Random Fields  

E-Print Network (OSTI)

Modeling Spatial-Temporal Binary Data Using Markov Random Fields Jun Zhu Department of Statistics to the autologistic model for spatial-temporal binary data. The model we propose is a Markov chain across time, where discuss the generality of our approach for modeling other types of spatial-temporal lattice data. Keywords

Huang, Su-Yun

364

FUZZY SPATIAL DATA MINING George Brannon Smith Susan M. Bridges  

E-Print Network (OSTI)

FUZZY SPATIAL DATA MINING George Brannon Smith Susan M. Bridges Department of Computer Science Box@cs.mssstate.edu Abstract A fuzzy spatial data mining technique has been developed to extract relationships describing been tested with hand-generated, synthetic, and sonar imagery. Keywords: data mining, spatial relations

Bridges, Susan M.

365

Nonparametric Spatial Models for Extremes: Application to Extreme Temperature Data.  

E-Print Network (OSTI)

Nonparametric Spatial Models for Extremes: Application to Extreme Temperature Data. Montserrat-developed, extending these tools to model spatial extreme data is an active area of research. In this paper, in order-developed. However, extending these tools to model spatial extreme data is an active area of research. One

Reich, Brian J.

366

Fourier based statistics for irregular spaced spatial data  

E-Print Network (OSTI)

Fourier based statistics for irregular spaced spatial data Suhasini Subba Rao Department A class of Fourier based statistics for irregular spaced spatial data is introduced, examples include. The Fourier based statistic is a quadratic form of a discrete Fourier-type transform of the spatial data

Subba Rao, Suhasini

367

DRAFT Chapter 7 Introduction to Spatial Data Mining  

E-Print Network (OSTI)

DRAFT Chapter 7 Introduction to Spatial Data Mining In this chapter we present an overview of some, of course, is on the mining of spatial data, but the set of techniques that we will discuss applies to many of data ev- ery day. Other large spatial databases include the U.S. census, and the weather and climate

Shekhar, Shashi

368

Spatial ordering and encoding for geographic data mining and visualization  

E-Print Network (OSTI)

Spatial ordering and encoding for geographic data mining and visualization Diansheng Guo & Mark, sales, or income). It is a challenging problem in spatial data mining and visualization to take possible. The ordering can then be used to spatially sort temporal or multivariate data series and thus

369

Common Spatial Patterns for Steady-State Somatosensory Evoked Potentials*  

E-Print Network (OSTI)

spatial pattern (CSP) method, which is the spatial feature extraction method most widely used for the motor imagery BCI paradigm, to SSSEP BCI. Experimental results show that our approach, where two CSP, which is referred to as "common spatial pattern (CSP)" method [4]. The CSP is one of the most

Choi, Seungjin

370

GIS and Spatial Analysis: Report on the Specialist Meeting  

E-Print Network (OSTI)

GIS and Spatial Analysis: Report on the Specialist Meeting Edited by A. Stewart Fotheringham-sponsored initiative on GIS and Spatial Analysis was first submitted to the Scientific Policy Committee of the NCGIA for initiatives on "GIS and Statistical Analysis" and "GIS and Spatial Modeling". The essence of the former

California at Santa Barbara, University of

371

Understanding the Causes of Spatial Variation in Pesticide Sorption and  

E-Print Network (OSTI)

1 Understanding the Causes of Spatial Variation in Pesticide Sorption and Degradation: Abdul Ghafoor) #12;Understanding the causes of spatial variation in pesticide degradation and sorption and sorption of pesticides in soils are both spatially variable and also among the most sensitive factors

372

Spatial Audio System for Surround Video Martin Morrell, 2  

E-Print Network (OSTI)

Spatial Audio System for Surround Video 1 Martin Morrell, 2 Chris Baume, 3 Joshua D. Reiss 1 In this paper we present the design processes of a spatial audio system for Surround Video. Surround Video reproduction, immersing them in the content. The design of a spatial audio system was necessary to give 360

Reiss, Josh

373

High vertical resolution crosswell seismic imaging  

DOE Patents (OSTI)

A method for producing high vertical resolution seismic images from crosswell data is disclosed. In accordance with one aspect of the disclosure, a set of vertically spaced, generally horizontally extending continuous layers and associated nodes are defined within a region between two boreholes. The specific number of nodes is selected such that the value of a particular characteristic of the subterranean region at each of the nodes is one which can be determined from the seismic data. Once values are established at the nodes, values of the particular characteristic are assigned to positions between the node points of each layer based on the values at node within that layer and without regard to the values at node points within any other layer. A seismic map is produced using the node values and the assigned values therebetween. In accordance with another aspect of the disclosure, an approximate model of the region is established using direct arrival traveltime data. Thereafter, the approximate model is adjusted using reflected arrival data. In accordance with still another aspect of the disclosure, correction is provided for well deviation. An associated technique which provides improvements in ray tracing is also disclosed.

Lazaratos, Spyridon K. (Houston, TX)

1999-12-07T23:59:59.000Z

374

Spatial Spectra of Human ECG 1 Freeman et al. Spatial spectral analysis of human electrocorticograms including the  

E-Print Network (OSTI)

Spatial Spectra of Human ECG 1 Freeman et al. Spatial spectral analysis of human Spectra of Human ECG 2 Freeman et al. (AM) of a broad spectrum gamma oscillation having a similar

Freeman, Walter J.

375

Human nature is finer: John Keats's use of the pathetic fallacy in the 1820 volume of poetry  

E-Print Network (OSTI)

'S PATHETIC FALLACIES IN THE FIVE 39 ODES AND THE MINOR POEMS 47 Introduction "Ode to a Nightingale" "Ode on a Grecian Urn" "Ode to Psyche" " T o Au turn n " 49 51 53 54 "Ode on Melancholy" "Fancy" "Lines on the Mermaid Tavern" "Robin Hood" 55... theory of art could only be achieved through the use of the absolute truth 13 and a love of reality. Arriving at almost the same con- elusion, J. D. Thomas believes that the pathetic fallacy developed out of Ruskin's attempt to account...

Pharis, Mary Jane Fleming

1979-01-01T23:59:59.000Z

376

High resolution mapping of CO(1-0) in NGC6240  

E-Print Network (OSTI)

We present high spatial resolution CO(1-0) mapping of the luminous infrared galaxy NGC6240 obtained with the IRAM - Plateau de Bure Interferometer. This source is a well-known early-stage merging system hosting two AGN. We find a broad CO(1-0) line profile, with maximum velocity 800 km/s and FWZI=1400 km/s, and displaying several kinematic components, revealing the complexity of the gas dynamics in this system. We detect a blueshifted CO emission with velocity in the range -200 and -500 km/s, peaked around the southern AGN, at the same position where the H2 outflow is located, and with a mass loss rate of ~500 Msun/yr. We interpret this blueshifted component as a outflow, originating from the southern nucleus. The spatial and spectral match strongly suggests that the CO outflow is connected to the H2 superwind located around the southern nucleus, and to the large scale CO outflow, with similar velocities, extended on scales of 10 kpc. The large mass loading factor (dM/dt /SFR ~ 10) of the molecular gas sugges...

Feruglio, C; Piconcelli, E; Cicone, C; Maiolino, R; Davies, R; Sturm, E

2013-01-01T23:59:59.000Z

377

Resolution enhancement of lung 4D-CT via group-sparsity  

SciTech Connect

Purpose: 4D-CT typically delivers more accurate information about anatomical structures in the lung, over 3D-CT, due to its ability to capture visual information of the lung motion across different respiratory phases. This helps to better determine the dose during radiation therapy for lung cancer. However, a critical concern with 4D-CT that substantially compromises this advantage is the low superior-inferior resolution due to less number of acquired slices, in order to control the CT radiation dose. To address this limitation, the authors propose an approach to reconstruct missing intermediate slices, so as to improve the superior-inferior resolution.Methods: In this method the authors exploit the observation that sampling information across respiratory phases in 4D-CT can be complimentary due to lung motion. The authors’ approach uses this locally complimentary information across phases in a patch-based sparse-representation framework. Moreover, unlike some recent approaches that treat local patches independently, the authors’ approach employs the group-sparsity framework that imposes neighborhood and similarity constraints between patches. This helps in mitigating the trade-off between noise robustness and structure preservation, which is an important consideration in resolution enhancement. The authors discuss the regularizing ability of group-sparsity, which helps in reducing the effect of noise and enables better structural localization and enhancement.Results: The authors perform extensive experiments on the publicly available DIR-Lab Lung 4D-CT dataset [R. Castillo, E. Castillo, R. Guerra, V. Johnson, T. McPhail, A. Garg, and T. Guerrero, “A framework for evaluation of deformable image registration spatial accuracy using large landmark point sets,” Phys. Med. Biol. 54, 1849–1870 (2009)]. First, the authors carry out empirical parametric analysis of some important parameters in their approach. The authors then demonstrate, qualitatively as well as quantitatively, the ability of their approach to achieve more accurate and better localized results over bicubic interpolation as well as a related state-of-the-art approach. The authors also show results on some datasets with tumor, to further emphasize the clinical importance of their method.Conclusions: The authors have proposed to improve the superior-inferior resolution of 4D-CT by estimating intermediate slices. The authors’ approach exploits neighboring constraints in the group-sparsity framework, toward the goal of achieving better localization and noise robustness. The authors’ results are encouraging, and positively demonstrate the role of group-sparsity for 4D-CT resolution enhancement.

Bhavsar, Arnav; Wu, Guorong; Shen, Dinggang [Department of Radiology and BRIC, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)] [Department of Radiology and BRIC, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Lian, Jun [Department of Radiation Oncology, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)] [Department of Radiation Oncology, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)

2013-12-15T23:59:59.000Z

378

E-Print Network 3.0 - applying spatial thinking Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: on geographic information science, spatial analysis, and accuracy in geographic data. "Spatial thinking applies... Analysis Application Applying Concepts of Spatial...

379

A new method for spatial analysis of irregularly spaced HLB data and biological implications  

E-Print Network (OSTI)

in the analysis of spatial data usually require that data beon irregularly spaced spatial data. Wavelet analysis is afor spatial analysis of irregularly spaced HLB data and

Kriss, Alissa B.; Irey, Michael S.; Gottwald, Tim R.

2014-01-01T23:59:59.000Z

380

E-Print Network 3.0 - assess spatial learning Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: -TRAN computationally feasible. Another effort at UCSB has been to assess the spatial data quality and to reduce spatial... in spatial cognition and its related...

Note: This page contains sample records for the topic "finer spatial resolution" 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.


381

A Variable-resolution Surface Wave Dispersion Study of Eurasia, North Africa, and Surrounding Regions  

SciTech Connect

This paper presents the results of a large-scale study of surface wave dispersion performed across Eurasia and North Africa. Improvements were made to previous surface wave work by enlarging the study region, increasing path density, improving spatial resolution, and expanding the period range. This study expands the coverage area northwards and eastwards relative to a previous dispersion analysis, which covered only North Africa and the Middle East. We have significantly increased the number of seismograms examined and group velocity measurements made. We have now made good quality dispersion measurements for about 30,000 Rayleigh wave and 20,000 Love wave paths, and have incorporated measurements from several other researchers into the study. A conjugate gradient method was employed for the group velocity tomography, which improved the inversion from the previous study by adopting a variable smoothness. This technique allows us to go to higher resolution where the data allow without producing artifacts. The current results include both Love and Rayleigh wave inversions across the region for periods from 7 to 100 seconds at 1{sup o} resolution. Short period group velocities are sensitive to slow velocities associated with large sedimentary features such as the Caspian Sea, West Siberian Platform, Mediterranean Sea, Bay of Bengal, Tarim Basin, and Persian Gulf. Intermediate periods are sensitive to differences in crustal thickness, such as those between oceanic and continental crust or along orogenic zones and continental plateaus. At longer periods, fast velocities are consistently found beneath cratons while slow upper mantle velocities occur along rift systems, subduction zones, and collision zones such as the Tethys Belt. We have compared the group velocities at various periods with features such as sediment thickness, topographic height, crustal thickness, proximity to plate boundaries, lithospheric age and lithospheric thickness, and find significant correlations. We don't find any similar correlation between the longest period surface waves and hot spots.

Pasyanos, M E

2005-03-21T23:59:59.000Z

382

Cryogenic Chiral Chromatography for Rapid Resolution of Drug Candidates  

Science Journals Connector (OSTI)

Cryogenic Chiral Chromatography for Rapid Resolution of Drug Candidates ... The chromatographic resolution of three racemates is presented at temperature areas extending to the cryogenic area, down to ?25 °C. ... Although none of the studied compounds could be completely separated at room temperature, a baseline separation was achieved at cryogenic temperatures. ...

Martti Alkio; Olli Aaltonen; Harri Setälä

2005-09-13T23:59:59.000Z

383

High-Resolution Simulations of Coal Injection in A Gasifier  

Science Journals Connector (OSTI)

High-Resolution Simulations of Coal Injection in A Gasifier ... The shrinkage of the coal particles because of devolatilization and drying was ignored, and a single mean particle size was used. ... Simulations with three different grid resolutions were conducted (denoted by coarse, medium, and fine). ...

Tingwen Li; Aytekin Gel; Madhava Syamlal; Chris Guenther; Sreekanth Pannala

2010-07-15T23:59:59.000Z

384

Notice of Data Request and Issues Resolution Workshop for the  

E-Print Network (OSTI)

of each solar field. Each solar plant would utilize approximately 85,000 heliostats. PARTICIPATION PleaseNotice of Data Request and Issues Resolution Workshop for the Rio Mesa Solar Electric Generating Resolution Workshop for the proposed Rio Mesa Solar Electric Generating Facility (Rio Mesa SEGF). All

385

RESOLUTIONS AND BETTI DIAGRAMS OF ALGEBRAS OF SL2-INVARIANTS  

E-Print Network (OSTI)

RESOLUTIONS AND BETTI DIAGRAMS OF ALGEBRAS OF SL2-INVARIANTS L. BEDRATYUK, A. E. BROUWER Abstract. For the algebras of SL2-invariants of small homological dimension the free graded resolutions and graded Betti graded free res- olutions and graded Betti diagrams for the algebras of SL2-invariants I in the cases hd

Brouwer, Andries E.

386

High resolution image reconstruction with constrained, total-variation minimization  

E-Print Network (OSTI)

in computed tomography (CT), see for example [1], because it is possible to account for noise in the data the resolution is arbitrarily high, because the system resolution is still limited by the discrete data sampling of the volume and ideal conditions of perfect data consistency: g = Xf, (1) where g represents the projection

Kurien, Susan

387

High resolution bragg focusing optics for synchrotron monochromators and analyzers  

SciTech Connect

A number of different applications for high resolution Bragg Focusing Optics are reviewed. Applications include Sagittal Focusing, Energy Dispersive optics for x-ray absorption and diffraction, a curved analyzer-multichannel detector method for efficient acquisition of powder and small angle scattering data, the use of Backscattering Analyzers for very high resolution inelastic scattering, and curved crystals for high energy applications.

Knapp, G.S.; Beno, M.A.; Gofron, K.J.

1997-07-01T23:59:59.000Z

388

Detection of Underground Marlpit Quarries Using High Resolution Seismic  

E-Print Network (OSTI)

Detection of Underground Marlpit Quarries Using High Resolution Seismic B. Piwakowski* (Ecole of high resolution reflection seismic for the detection and location of underground marlpit quarries of the geological structure, the results show that the detection of marlpit underground quarries, often considered

Boyer, Edmond

389

Entity Resolution in the Web of Data Kostas Stefanidis  

E-Print Network (OSTI)

, and sup- porting deep reasoning using related ontologies to create the Web of knowledge. Data describingEntity Resolution in the Web of Data Kostas Stefanidis ICS-FORTH kstef@ics.forth.gr Vasilis that are relevant to addressing the new challenges in entity resolution posed by the Web of data, in which real

Paris-Sud XI, Université de

390

Technologies Provide High-Resolution Subsurface Imaging of Vadose Zone  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technologies Provide High-Resolution Subsurface Imaging of Vadose Technologies Provide High-Resolution Subsurface Imaging of Vadose Zone Contamination at Hanford Site Technologies Provide High-Resolution Subsurface Imaging of Vadose Zone Contamination at Hanford Site May 17, 2012 - 12:00pm Addthis Shown here are high-resolution, three-dimensional ERT images of contaminant distribution Shown here are high-resolution, three-dimensional ERT images of contaminant distribution RICHLAND, Wash. - Cold War waste disposal practices resulted in both planned and unplanned releases of large amounts of radionuclide and heavy metal contamination into the subsurface throughout the DOE complex. Characterizing the distribution of the resulting environmental contamination remains one of the single most significant challenges limiting subsurface remediation and closure, particularly for the

391

Subsystem codes with spatially local generators  

Science Journals Connector (OSTI)

We study subsystem codes whose gauge group has local generators in two-dimensional (2D) geometry. It is shown that there exists a family of such codes defined on lattices of size L×L with the number of logical qubits k and the minimum distance d both proportional to L. The gauge group of these codes involves only two-qubit generators of type XX and ZZ coupling nearest-neighbor qubits (and some auxiliary one-qubit generators). Our proof is not constructive as it relies on a certain version of the Gilbert-Varshamov bound for classical codes. Along the way, we introduce and study properties of generalized Bacon-Shor codes that might be of independent interest. Secondly, we prove that any 2D subsystem [n,k,d] code with spatially local generators obeys upper bounds kd=O(n) and d2=O(n). The analogous upper bound proved recently for 2D stabilizer codes is kd2=O(n). Our results thus demonstrate that subsystem codes can be more powerful than stabilizer codes under the spatial locality constraint.

Sergey Bravyi

2011-01-26T23:59:59.000Z

392

Development of ultrasonic thermometry for high-temperature high-resolution temperature profiling applications in LMFBR safety research  

SciTech Connect

Ultrasonic thermometry has been developed as a high temperature profiling diagnostic for use in the LMFBR Debris Coolability Program at Sandia National Laboratories. These instruments have been used successfully in the dc series experiments and the D10 experiment. Temperatures approaching 3000/sup 0/C with spatial resolution of 10 mm and indicated temperature gradients of 700/sup 0/C/cm have been measured. Instruments have operated in molten sodium, molten steel, and molten UO/sub 2/ environments. Up to 14 measurement zones on a single instrument in molten sodium have been used with 12 mm and 15 mm spatial resolution. Hermetically sealed units operated at elevated temperatures have been used. Posttest examination has revealed very little systematic calibration drifts (<10/sup 0/C) with random drifts occurring with less than 40/sup 0/C standard deviation in a 10 to 12 mm measurement zone. The stability of the system varies from +-1/sup 0/C to +-15/sup 0/C depending on the sensor design constraints for a particular application. Doped tungsten sensors have been developed to permit operation of total measurement zone lengths of 30 cm at temperatures above 2500/sup 0/C. 33 refs., 13 figs.

Field, M.E.

1986-05-01T23:59:59.000Z

393

Marine protected areas and the value of spatially optimized fishery management  

E-Print Network (OSTI)

Science and Management, c Earth Research Institute, and d Department of Geography, University on marine spatial planning, including spatial fisheries management. Some spatial management approaches to increase fishery returns, but the potential for the broader class of spatial management approaches

Siegel, David A.

394

Spatially indirect excitons in coupled quantum wells  

SciTech Connect

Microscopic quantum phenomena such as interference or phase coherence between different quantum states are rarely manifest in macroscopic systems due to a lack of significant correlation between different states. An exciton system is one candidate for observation of possible quantum collective effects. In the dilute limit, excitons in semiconductors behave as bosons and are expected to undergo Bose-Einstein condensation (BEC) at a temperature several orders of magnitude higher than for atomic BEC because of their light mass. Furthermore, well-developed modern semiconductor technologies offer flexible manipulations of an exciton system. Realization of BEC in solid-state systems can thus provide new opportunities for macroscopic quantum coherence research. In semiconductor coupled quantum wells (CQW) under across-well static electric field, excitons exist as separately confined electron-hole pairs. These spatially indirect excitons exhibit a radiative recombination time much longer than their thermal relaxation time a unique feature in direct band gap semiconductor based structures. Their mutual repulsive dipole interaction further stabilizes the exciton system at low temperature and screens in-plane disorder more effectively. All these features make indirect excitons in CQW a promising system to search for quantum collective effects. Properties of indirect excitons in CQW have been analyzed and investigated extensively. The experimental results based on time-integrated or time-resolved spatially-resolved photoluminescence (PL) spectroscopy and imaging are reported in two categories. (i) Generic indirect exciton systems: general properties of indirect excitons such as the dependence of exciton energy and lifetime on electric fields and densities were examined. (ii) Quasi-two-dimensional confined exciton systems: highly statistically degenerate exciton systems containing more than tens of thousands of excitons within areas as small as (10 micrometer){sup 2} were observed. The spatial and energy distributions of optically active excitons were used as thermodynamic quantities to construct a phase diagram of the exciton system, demonstrating the existence of distinct phases. Optical and electrical properties of the CQW sample were examined thoroughly to provide deeper understanding of the formation mechanisms of these cold exciton systems. These insights offer new strategies for producing cold exciton systems, which may lead to opportunities for the realization of BEC in solid-state systems.

Lai, Chih-Wei Eddy

2004-03-01T23:59:59.000Z

395

Control of entity interactions in a hierarchical variable resolution simulation  

SciTech Connect

There has long been interest in variable resolution modeling to support military analysis for a broad range of interest areas. Despite the ever-present desire for models of greater fidelity at the expense of analysis and computation resources, models of moderate to low fidelity are still required at many levels of decision-making. Problems can arise due to the issue of consistency among the family of models used for analysis. To address this and other problems, models of variable resolution have been suggested. However, such variable resolution architectures inherently carry their own set of issues which must be resolved in order to be useful. First, what are the structural requirements for a variable resolution model; and second, how are interactions between entities governed, especially when the entities have different resolutions? This paper addresses these issues and discusses key mechanisms needed to develop a variable resolution combat simulation that meets several core requirements for such models: seamless aggregation/disaggregation, appropriate interactions between entities of differing resolution, and control of the aggregation/disaggregation process.

Powell, D.R.

1997-08-01T23:59:59.000Z

396

Lynx: A High-Resolution Synthetic Aperture Radar  

SciTech Connect

Lynx is a high resolution, synthetic aperture radar (SAR) that has been designed and built by Sandia National Laboratories in collaboration with General Atomics (GA). Although Lynx may be operated on a wide variety of manned and unmanned platforms, it is primarily intended to be fielded on unmanned aerial vehicles. In particular, it may be operated on the Predator, I-GNAT, or Prowler II platforms manufactured by GA Aeronautical Systems, Inc. The Lynx production weight is less than 120 lb. and has a slant range of 30 km (in 4 mm/hr rain). It has operator selectable resolution and is capable of 0.1 m resolution in spotlight mode and 0.3 m resolution in stripmap mode. In ground moving target indicator mode, the minimum detectable velocity is 6 knots with a minimum target cross-section of 10 dBsm. In coherent change detection mode, Lynx makes registered, complex image comparisons either of 0.1 m resolution (minimum) spotlight images or of 0.3 m resolution (minimum) strip images. The Lynx user interface features a view manager that allows it to pan and zoom like a video camera. Lynx was developed under corporate finding from GA and will be manufactured by GA for both military and commercial applications. The Lynx system architecture will be presented and some of its unique features will be described. Imagery at the finest resolutions in both spotlight and strip modes have been obtained and will also be presented.

Doerry, A.W.; Hensley, W.H.; Pace, F.; Stence, J.; Tsunoda, S.I.; Walker, B.C.; Woodring, M.

1999-03-08T23:59:59.000Z

397

Control of entity interactions in a hierarchical variable resolution simulation  

SciTech Connect

There has long been interest in variable resolution modeling to support military analysis for a broad range of interest areas. Despite the ever-present desire for models of greater fidelity at the expense of analysis and computation resources, models of moderate to low fidelity are still required at many levels of decision-making. Problems can arise due to the issue of consistency among the family of models used for analysis. To address this and other problems, models of variable resolution have been suggested. However, such variable resolution architectures inherently carry their own set of issues which must be resolved in order to be useful. First, what are the structural requirements for a variable resolution model; and second, how are interactions between entities governed, especially when the entities have different resolutions? This paper addresses these issues and discusses key mechanisms needed to develop a variable resolution combat simulation that meets several core requirements for such models: seamless aggregation/disaggregation, appropriate interactions between entities of differing resolution, and control of the aggregation/disaggregation process.

Powell, D.R.

1997-10-01T23:59:59.000Z

398

Spatially Resolved Millimeter Spectroscopy of the Gravitational Lens PKS 1830-211  

E-Print Network (OSTI)

This paper presents data from the BIMA interferometer showing spatially resolved absorption spectra of the gravitationally lensed quasar PKS 1830-211. High-resolution (1.2 km/s) spectra were taken in two spectral windows centered on the redshifted frequencies of the HCO+(2-1) and HCN(2-1) molecular transitions. There is no molecular absorption in the northeast image but the southwest image reveals optically thick absorbing gas at these transition frequencies. Further analyses conclude that the spectra are consistent with completely saturated absorption in the southwest image and the line profiles suggest that the absorbing medium is complex, perhaps containing multiple components and small scale structure. The absorption occurs along a pencil beam through the lensing galaxy which is thought to be a late type spiral oriented almost face on. However, the spectra show absorption spanning more than 60 km/s which is difficult to explain for this scenario.

Swift, J; Frye, B L

2001-01-01T23:59:59.000Z

399

Effective Field Theory of Broken Spatial Diffeomorphisms  

E-Print Network (OSTI)

We study the low energy effective theory describing gravity with broken spatial diffeomorphism invariance. In the unitary gauge, the Goldstone bosons associated with broken diffeomorphisms are eaten and the graviton becomes a massive spin-2 particle with 5 well-behaved degrees of freedom. In this gauge, the most general theory is built with the lowest dimension operators invariant under only temporal diffeomorphisms. Imposing the additional shift and SO(3) internal symmetries, we analyze the perturbations on a FRW background. At linear perturbation level, the observables of this theory are characterized by six parameters, including the usual cosmological parameters and two additional coupling constants for the symmetry-breaking scalars. We discuss several examples relevant to theories of massive gravity.

Lin, Chunshan

2015-01-01T23:59:59.000Z

400

Spatial xenon oscillation control with expert systems  

SciTech Connect

Spatial power oscillations were attributed to the xenon transients in a reactor core in 1958 by Randall and St. John. These transients are usually initiated by a local reactivity insertion and lead to divergent axial flux oscillations in the core at constant power. Several heuristic manual control strategies and automatic control methods were developed to damp the xenon oscillations at constant power operations. However, after the load-follow operation of the reactors became a necessity of life, a need for better control strategies arose. Even though various advanced control strategies were applied to solve the xenon oscillation control problem for the load-follow operation, the complexity of the system created difficulties in modeling. The strong nonlinearity of the problem requires highly sophisticated analytical approaches that are quite inept for numerical solutions. On the other hand, the complexity of a system and heuristic nature of the solutions are the basic reasons for using artificial intelligence techniques such as expert systems.

Alten, S. (Turkish Atomic Energy Authority, Ankara (Turkey)); Danofsky, R.A. (Iowa State Univ., Ames, IA (United States))

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "finer spatial resolution" 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

Spatial filters for high power lasers  

DOE Patents (OSTI)

A spatial filter includes a first filter element and a second filter element overlapping with the first filter element. The first filter element includes a first pair of cylindrical lenses separated by a first distance. Each of the first pair of cylindrical lenses has a first focal length. The first filter element also includes a first longitudinal slit filter positioned between the first pair of cylindrical lenses. The second filter element includes a second pair of cylindrical lenses separated by a second distance. Each of the second pair of cylindrical lenses has a second focal length. The second filter element also includes a second longitudinal slit filter positioned between the second pair of cylindrical lenses.

Erlandson, Alvin Charles; Bayramian, Andrew James

2014-12-02T23:59:59.000Z

402

Environmental Conflict Resolution Third Annual Report January 2009  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Third Annual Report Third Annual Report January 2009 U.S. Department of Energy EXECUTIVE SUMMARY The Department of Energy (DOE or the Department) defines environmental conflict resolution (ECR) as the use of any collaborative process to prevent or resolve environmental conflicts, including but not limited to those processes involving the use of third-party neutrals. This definition is consistent with that provided in the Administration's 2005 Memorandum on Environmental Conflict Resolution which acknowledged the value of all types of dispute resolution and collaborative problem solving. Collaborative approaches to avoiding or resolving environmental conflicts have been used by DOE sites prior to the issuance of the ECR memorandum and continue to be

403

Some Dynamic Graphics for Spatial Data (with Multiple Attributes) in a GIS  

E-Print Network (OSTI)

Some Dynamic Graphics for Spatial Data (with Multiple Attributes) in a GIS Dianne Cook 1 , Noel. This paper discusses some multivariate exploratory spatial data analy­ sis tools for detecting spatial. canonical correlations, correlation tour, exploratory spatial data anal­ ysis, spatial dependence, spatial

Symanzik, Jürgen

404

Some Dynamic Graphics for Spatial Data with Multiple Attributes in a GIS  

E-Print Network (OSTI)

Some Dynamic Graphics for Spatial Data with Multiple Attributes in a GIS Dianne Cook1, Noel Cressie discusses some multivariate exploratory spatial data analy- sis tools for detecting spatial dependence correlations, correlation tour, exploratory spatial data anal- ysis, spatial dependence, spatial statistics 1

Symanzik, Jürgen

405

A Survey of Spatial Data Mining Methods Databases and Statistics Point of Views  

E-Print Network (OSTI)

A Survey of Spatial Data Mining Methods Databases and Statistics Point of Views Karine Zeitouni PRi in common. KEYWORDS : Spatial Data Mining, Spatial Databases, Rules Induction, Spatial Statistics, Spatial data mining to spatial data. This recent technology is an extension of the data mining applied

Zeitouni, Karine

406

EXTENDING THE NEARBY GALAXY HERITAGE WITH WISE: FIRST RESULTS FROM THE WISE ENHANCED RESOLUTION GALAXY ATLAS  

SciTech Connect

The Wide-field Infrared Survey Explorer (WISE) mapped the entire sky at mid-infrared wavelengths 3.4 {mu}m, 4.6 {mu}m, 12 {mu}m, and 22 {mu}m. The mission was primarily designed to extract point sources, leaving resolved and extended sources, for the most part, unexplored. Accordingly, we have begun a dedicated WISE Enhanced Resolution Galaxy Atlas (WERGA) project to fully characterize large, nearby galaxies and produce a legacy image atlas and source catalog. Here we demonstrate the first results of the WERGA project for a sample of 17 galaxies, chosen to be of large angular size, diverse morphology, and covering a range in color, stellar mass, and star formation. It includes many well-studied galaxies, such as M 51, M 81, M 87, M 83, M 101, and IC 342. Photometry and surface brightness decomposition is carried out after special super-resolution processing, achieving spatial resolutions similar to that of Spitzer Infrared Array Camera. The enhanced resolution method is summarized in the first paper of this two-part series. In this second work, we present WISE, Spitzer, and Galaxy Evolution Explorer (GALEX) photometric and characterization measurements for the sample galaxies, combining the measurements to study the global properties. We derive star formation rates using the polycyclic aromatic hydrocarbon sensitive 12 {mu}m (W3) fluxes, warm-dust sensitive 22 {mu}m (W4) fluxes, and young massive-star sensitive ultraviolet (UV) fluxes. Stellar masses are estimated using the 3.4 {mu}m (W1) and 4.6 {mu}m (W2) measurements that trace the dominant stellar mass content. We highlight and showcase the detailed results of M 83, comparing the WISE/Spitzer results with the Australia Telescope Compact Array H I gas distribution and GALEX UV emission, tracing the evolution from gas to stars. In addition to the enhanced images, WISE's all-sky coverage provides a tremendous advantage over Spitzer for building a complete nearby galaxy catalog, tracing both stellar mass and star formation histories. We discuss the construction of a complete mid-infrared catalog of galaxies and its complementary role of studying the assembly and evolution of galaxies in the local universe.

Jarrett, T. H.; Masci, F.; Tsai, C. W. [Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125 (United States); Petty, S.; Lake, S.; Wright, E. [Physics and Astronomy Department, University of California, Los Angeles, CA 90095 (United States); Cluver, M. E. [Australian Astronomical Observatory, P.O. Box 915, North Ryde, NSW 1670 (Australia); Assef, Roberto J.; Eisenhardt, P. [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Mail Stop 169-221, Pasadena, CA 91109 (United States); Benford, D. [NASA Goddard Space Flight Center, Code 665, Greenbelt, MD 20771 (United States); Blain, A. [Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH (United Kingdom); Bridge, C.; Neill, James D. [Department of Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States); Donoso, E. [Spitzer Science Center, IPAC, California Institute of Technology, Pasadena, CA 91125 (United States); Koribalski, B. [CSIRO Astronomy and Space Science, Australia Telescope National Facility (ATNF), P.O. Box 76, Epping, NSW 1710 (Australia); Seibert, M. [Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Sheth, K. [NRAO, 520 Edgemont Road, Charlottesville, VA 22903-2475 (United States); Stanford, S. [Department of Physics, University of California, One Shields Avenue, Davis, CA 95616 (United States)

2013-01-01T23:59:59.000Z

407

Land Processes in a High Resolution Community Climate Model with Sub-Grid Scale Parameterizations Final Report  

SciTech Connect

The characteristics of land important for climate are very heterogeneous, as are the key atmospheric inputs to land, i.e. precipitation and radiation. To adequately represent this heterogeneity, state-of-the-art climate models should represent atmospheric inputs to land, land properties, and the dynamical changes of land at the highest resolution accessible by climate models. The research funded under this project focused on the development of an alternative approach to this problem in which a sub-mesh is imposed on each atmospheric model grid square. This allows representation of the land climate dynamics at a higher resolution than that achievable in the global atmospheric models. The high spatial detail of the fine-mesh treatment provides not only a more accurate representation of land processes to the atmospheric model, but also the opportunity for direct downscaling of the surface climate. The proposed project continued the development and refinement of a high-resolution land surface model that is compatible for inclusion into the National Center for Atmospheric Research (NCAR) Community Climate Model (CCM), a state-of-the-art atmospheric general circulation model (GCM) that is used for climate simulation and prediction.

R. E. Dickinson; Andrea N. Hahmann

2002-07-17T23:59:59.000Z

408

Spatial GHG inventory at the regional level: accounting for uncertainty  

Science Journals Connector (OSTI)

Methodology and geo-information technology for spatial analysis of processes of greenhouse gas (GHG) emissions from mobile and stationary sources of...

R. Bun; Kh. Hamal; M. Gusti; A. Bun

2010-11-01T23:59:59.000Z

409

Spatial GHG inventory at the regional level: accounting for uncertainty  

Science Journals Connector (OSTI)

Methodology and geo-information technology for spatial analysis of processes of greenhouse gas (GHG) emissions from mobile and stationary sources of...

R. Bun; Kh. Hamal; M. Gusti; A. Bun

2011-01-01T23:59:59.000Z

410

Spatial And Temporal Geochemical Trends In The Hydrothermal System...  

Open Energy Info (EERE)

but each river is characterized by a distinct chemical composition, implying large-scale spatial heterogeneity in the inputs of the various solutes. The data also display...

411

The Variational Inequality Approach for Solving Spatial Auction ...  

E-Print Network (OSTI)

Mar 23, 2007 ... uted markets under capacity and balance constraints and show that solu- ... Spatial market problem, capacity constraints, variational in- equality ...

2007-03-23T23:59:59.000Z

412

Modeling circulation in lakes: Spatial and temporal variations  

Science Journals Connector (OSTI)

ABSTRACT: The influence of spatial and temporal variations in wind forcing on the circulation in lakes is investigated using field data and the three-dimensional

413

High Resolution Imaging Science Experiment | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » High Resolution Imaging Science Experiment Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: High Resolution Imaging Science Experiment Author University of Arizona Published Publisher Not Provided, 2007 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for High Resolution Imaging Science Experiment Citation University of Arizona. High Resolution Imaging Science Experiment [Internet]. 2007. [cited 2013/09/27]. Available from: http://hirise.lpl.arizona.edu/HiBlog/tag/wavelength/ Retrieved from

414

High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone  

Open Energy Info (EERE)

High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone National Park Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone National Park Details Activities (1) Areas (1) Regions (0) Abstract: High-resolution aeromagnetic data acquired over Yellowstone National Park (YNP) show contrasting patterns reflecting differences in rock composition, types and degree of alteration, and crustal structures that mirror the variable geology of the Yellowstone Plateau. The older, Eocene, Absaroka Volcanic Supergroup, a series of mostly altered, andesitic volcanic and volcaniclastic rocks partially exposed in mountains on the eastern margin of YNP, produces high-amplitude, positive magnetic

415

High resolution linkage and association study of quantitative trait loci  

E-Print Network (OSTI)

As a large number of single nucleotide polymorphisms (SNPs) and microsatellite markers are available, high resolution mapping employing multiple markers or multiple allele markers is an important step to identify quantitative trait locus (QTL...

Jung, Jeesun

2005-11-01T23:59:59.000Z

416

Resolution-Exact Algorithms for Link Robots Zhongdi Luo1  

E-Print Network (OSTI)

Resolution-Exact Algorithms for Link Robots Zhongdi Luo1 , Yi-Jen Chiang2 , Jyh-Ming Lien3-based search strategies. The T/R idea is to give primacy to the translational (T) components, and perform

Chiang, Yi-Jen

417

Resolution-Exact Algorithms for Link Robots Zhongdi Luo1  

E-Print Network (OSTI)

Resolution-Exact Algorithms for Link Robots Zhongdi Luo1 , Yi-Jen Chiang2 , Jyh-Ming Lien3 predicates for link robots, a novel "T/R splitting method" for subdivi- sion, and feature-based search

Chiang, Yi-Jen

418

The New England High-Resolution Temperature Program  

Science Journals Connector (OSTI)

The New England High-Resolution Temperature Program seeks to improve the accuracy of summertime 2-m temperature and dewpoint temperature forecasts in the New England region through a collaborative effort between the research and operational ...

David J. Stensrud; Nusrat Yussouf; Michael E. Baldwin; Jeffery T. McQueen; Jun Du; Binbin Zhou; Brad Ferrier; Geoffrey Manikin; F. Martin Ralph; James M. Wilczak; Allen B. White; Irina Djlalova; Jian-Wen Bao; Robert J. Zamora; Stanley G. Benjamin; Patricia A. Miller; Tracy Lorraine Smith; Tanya Smirnova; Michael F. Barth

2006-04-01T23:59:59.000Z

419

Goodbye, Watts. Hello, Lumens. (Low-Resolution Billboard) | Department...  

Energy Savers (EERE)

Hello Lumens. The new way to shop for light. Energysaver.gov DoEBillboardGoodbyeWattsweb.jpg More Documents & Publications Goodbye, Watts. Hello, Lumens. (High-Resolution JPG...

420

Goodbye, Watts. Hello, Lumens. (High-Resolution JPG Billboard...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hello Lumens. The new way to shop for light. Energysaver.gov DoEBillboardGoodbyeWatts.jpg More Documents & Publications Goodbye, Watts. Hello, Lumens. (High-Resolution EPS...

Note: This page contains sample records for the topic "finer spatial resolution" 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

Graph Expansion, Tseitin Formulas and Resolution Proofs for CSP  

Science Journals Connector (OSTI)

We study the resolution complexity of Tseitin formulas over arbitrary rings in terms of combinatorial properties of graphs. We give some evidence that an expansion of a graph is a good characterization of the ...

Dmitry Itsykson; Vsevolod Oparin

2013-01-01T23:59:59.000Z

422

Achieving sub-10-nm resolution using scanning electron beam lithography  

E-Print Network (OSTI)

Achieving the highest possible resolution using scanning-electron-beam lithography (SEBL) has become an increasingly urgent problem in recent years, as advances in various nanotechnology applications have driven demand for ...

Cord, Bryan M. (Bryan Michael), 1980-

2009-01-01T23:59:59.000Z

423

Atomic Resolution Mapping of the Excited-State Electronic Structure...  

NLE Websites -- All DOE Office Websites (Extended Search)

Mapping of the Excited-State Electronic Structure of Cu2O with Time-Resolved X-Ray Absorption Spectroscopy. Atomic Resolution Mapping of the Excited-State Electronic Structure of...

424

High-resolution numerical simulation of the Pacific Ocean  

Science Journals Connector (OSTI)

The present study developed Pacific Ocean models from the Research Institute for Applied Mechanics Ocean Model (RIAMOM) with very high horizontal ... high-resolution models show realistic climatological features ...

Sung Hyup You; Jong Hwan Yoon

2010-02-01T23:59:59.000Z

425

Thin, Free-Standing Films For High Resolution Neutron Imaging.  

E-Print Network (OSTI)

??Thin, free-standing boro-phosphosilicate glass (BPSG) films were fabricated at PSU Nanofab to serve as prototype neutron converters for a proposed high resolution neutron imaging system… (more)

Trivelpiece, Cory

2010-01-01T23:59:59.000Z

426

Sum Frequency High-Resolution Surface Spectroscopy | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

nm Microstepping motor controller for motorized six-axis sample holder SFG software using LabVIEW shell. C. Spectral range and Resolution: Infrared spectral coverage: 670-4000 cm-1...

427

Lasers, Electron Beams and New Years Resolutions | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lasers, Electron Beams and New Years Resolutions Lasers, Electron Beams and New Years Resolutions Lasers, Electron Beams and New Years Resolutions March 2, 2011 - 3:43pm Addthis Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts? The electron beam that powers Jefferson Lab's Free-Electron Laser pumped out a record power input of 500 kilvolts using an innovative energy-recovery system that amplifies energy with far less power. A sufficiently powerful laser could make an effective defensive weapon, as well as accurate detection and tracking. The few folks still keeping their New Year's resolutions to work out might be the first to appreciate the recent record-breaking lift by the Energy Department's Jefferson Lab. Take a steel dumbbell. Hoist it up - lift with your legs! - onto a stand. Then add another ...and another

428

Photon Sciences | Beamlines | SRX: Submicron Resolution X-ray Spectroscopy  

NLE Websites -- All DOE Office Websites (Extended Search)

SRX: Submicron Resolution X-ray Spectroscopy SRX: Submicron Resolution X-ray Spectroscopy Poster | Fact Sheet | Preliminary Design Report Scientific Scope Scientific communities such as environmental sciences, life sciences, and material sciences have identified the need to develop analytical resources to advance the understanding of complex natural and engineered systems that are heterogeneous on the micron to nanometer scale. These needs for high intensity x-ray nanoprobes resulted in the commitment of the NSLS-II Project to build the Submicron Resolution X-ray (SRX) Spectroscopy beamline showing a unique combination of high spectral resolution over a very broad energy range and very high beam intensity in a sub-micrometer spot. NSLS-II will provide one of the best sources in the world for such an instrument.

429

Analytical Alias Resolution Mehmet Hadi Gunes and Kamil Sarac  

E-Print Network (OSTI)

that · includes artificial links/nodes · misses existing links/nodes Alias Resolution: Problem IPA2 IPA3 IPA4 IPA5IPA6 IPA1 #12;Analytical Alias Resolution 5/13 Address Based Method (Mercator and iffinder) [J.Pansiot98] · Send probe packets to different IP addresses (i.e. IPA and IPB) · If replies from have the same

Gunes, Mehmet Hadi

430

Photon-number-resolving detector with 10 bits of resolution  

SciTech Connect

A photon-number-resolving detector with single-photon resolution is described and demonstrated. It has 10 bits of resolution, does not require cryogenic cooling, and is sensitive to near ir wavelengths. This performance is achieved by flood illuminating a 32x32 element In{sub x}Ga{sub 1-x}AsP Geiger-mode avalanche photodiode array that has an integrated counter and digital readout circuit behind each pixel.

Jiang, Leaf A.; Dauler, Eric A.; Chang, Joshua T

2007-06-15T23:59:59.000Z

431

Sapphire analyzers for high-resolution x-ray spectroscopy.  

SciTech Connect

We present a sapphire (Al{sub 2}O{sub 3}) analyzer for high-resolution X-ray spectroscopy with 31-meV energy resolution. The analyzer is designed for resonant inelastic X-ray scattering (RIXS) measurements at the CuK{sub a} absorption edge near 8990 eV. The performance of the analyzer is demonstrated by measuring phonon excitations in beryllium because of its known dynamical structure and high counting rates.

Yavas, H.; Alp, E.; Sinn, H.; Alatas, A.; Said, A.; Shvydko, Y.; Toellner, T.; Khachatryan, R.; Billinge, S.; Hasan, Z.; Sturhahn, W.; Michigan State Univ.; Princeton Univ.; DESY

2007-11-11T23:59:59.000Z

432

Single-cell resolution in high-resolution synchrotron X-ray CT imaging with gold nanoparticles  

Science Journals Connector (OSTI)

It is demonstrated that single-cell resolution can be obtained ex vivo in the brain of small animals using gold nanoparticles with the synchrotron-based computed tomography technique.

Sch?ltke, E.

2013-12-11T23:59:59.000Z

433

Concept of a Stand-Alone Muon Trigger with High Transverse Momentum Resolution for the ATLAS Detector at the High-Luminosity LHC  

E-Print Network (OSTI)

The ATLAS trigger uses a three-level trigger system. The level-1 (L1) trigger for muons with high transverse momentum pT in ATLAS is based on fast chambers with excellent time resolution which are able to identify muons coming from a particular beam crossing. These trigger chambers also provide a fast measurement of the muon transverse momenta, however with limited accuracy caused by the moderate spatial resolution along the deflecting direction of the magnetic field. The higher luminosity foreseen for Phase-II puts stringent limits on the L1 trigger rates. A way to control these rates is the improvement of the spatial resolution of the triggering device which drastically sharpens the turn-on curve of the L1 trigger. To do this, the precision tracking chambers (MDT) can be used in the L1 trigger, if the corresponding trigger latency is increased as planned. The trigger rate reduction is accomplished by strongly decreasing the rate of triggers from muons with pT lower than a predefined threshold (typically 20 ...

Horii, Yasuyuki; The ATLAS collaboration

2014-01-01T23:59:59.000Z

434

Approaches to Anaphora Resolution in a Natural Language Database Management System  

E-Print Network (OSTI)

interface to a variety of systems. The types of information available for resolution are first identified and the past approaches to resolution for each type are critically reviewed. This paper then describes how anaphora resolution is implemented...

Nara, Hiroshi

1986-01-01T23:59:59.000Z

435

Kalman-filtered compressive sensing for high resolution estimation of anthropogenic greenhouse gas emissions from sparse measurements.  

SciTech Connect

The estimation of fossil-fuel CO2 emissions (ffCO2) from limited ground-based and satellite measurements of CO2 concentrations will form a key component of the monitoring of treaties aimed at the abatement of greenhouse gas emissions. The limited nature of the measured data leads to a severely-underdetermined estimation problem. If the estimation is performed at fine spatial resolutions, it can also be computationally expensive. In order to enable such estimations, advances are needed in the spatial representation of ffCO2 emissions, scalable inversion algorithms and the identification of observables to measure. To that end, we investigate parsimonious spatial parameterizations of ffCO2 emissions which can be used in atmospheric inversions. We devise and test three random field models, based on wavelets, Gaussian kernels and covariance structures derived from easily-observed proxies of human activity. In doing so, we constructed a novel inversion algorithm, based on compressive sensing and sparse reconstruction, to perform the estimation. We also address scalable ensemble Kalman filters as an inversion mechanism and quantify the impact of Gaussian assumptions inherent in them. We find that the assumption does not impact the estimates of mean ffCO2 source strengths appreciably, but a comparison with Markov chain Monte Carlo estimates show significant differences in the variance of the source strengths. Finally, we study if the very different spatial natures of biogenic and ffCO2 emissions can be used to estimate them, in a disaggregated fashion, solely from CO2 concentration measurements, without extra information from products of incomplete combustion e.g., CO. We find that this is possible during the winter months, though the errors can be as large as 50%.

Ray, Jaideep; Lee, Jina; Lefantzi, Sophia; Yadav, Vineet [Carnegie Institution for Science, Stanford, CA; Michalak, Anna M. [Carnegie Institution for Science, Stanford, CA; van Bloemen Waanders, Bart Gustaaf [Sandia National Laboratories, Albuquerque NM; McKenna, Sean Andrew [IBM Research, Mulhuddart, Dublin, Ireland

2013-09-01T23:59:59.000Z

436

Spatial simulation of smallmouth bass in streams  

SciTech Connect

The hydropower industry and its regulators are hampered by the inability to predict the relationship between alternative flow regimes and fish population response. We have developed a spatially explicit, individual-based model of populations of small-mouth bass in streams as part of the Compensatory Mechanisms in Fish Populations Program (see Sale and Otto 1991). In the model, the profitability of alternative stream locations varies in response to habitat depth and velocity through changes in the frequency of prey encounters and the metabolic costs experienced by fish. We conducted an evaluation of our hydraulic simulation at the scale of individual stream cells. The potential error in predictions for individual cell velocities suggests that larger-scale model predictions for the representative reach are most appropriate. At this scale, the model appears to produce realistic patterns in the growth and dispersal of young-of-year small-mouth bass. This verification step allows us to proceed with greater confidence in evaluating the original question of how small-mouth bass populations respond to alternative flow regimes.

Jager, H.I.; Schmoyer, D.D.; Sale, M.J.; Van Winkle, W.; DeAngelis, D.L. [Oak Ridge National Lab., TN (United States); Sabo, M.J. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Fisheries and Wildlife Sciences

1993-04-01T23:59:59.000Z

437

Application of GIS to spatial analysis of mesofault populations  

Science Journals Connector (OSTI)

This paper presents a GIS approach to spatial analysis of fault populations. Coherence between fault moment tensors, a concept borrowed from the geophysical works of Kagan and Knopoff [1985a. Geophysical Journal of the Royal Astronomical Society 81(2), ... Keywords: Faults, GIS customization, Spatial analysis, Structural analysis, Tensor

Mauro Alberti

2005-12-01T23:59:59.000Z

438

Hard lessons: effort-inducing interfaces benefit spatial learning  

Science Journals Connector (OSTI)

Interface designers normally strive for a design that minimises the user's effort. However, when the design's objective is to train users to interact with interfaces that are highly dependent on spatial properties (e.g. keypad layout or gesture shapes) ... Keywords: education, gesture stroke, learning, pen input, skill acquisition, spatial memory, text entry, training

Andy Cockburn; Per Ola Kristensson; Jason Alexander; Shumin Zhai

2007-04-01T23:59:59.000Z

439

The Rate of Accretion and Spatial Distribution of Sediments  

E-Print Network (OSTI)

The Rate of Accretion and Spatial Distribution of Sediments In the Great Sippewisset Salt Marsh the effects of location relative to the sediment source and tidal channel, elevation, tide magnitude, and marsh grass coverage on the spatial distribution of sediments in the system. I also quantified

Vallino, Joseph J.

440

A Spatial Planning and Analysis System for Wildland Fire Management  

E-Print Network (OSTI)

STARFIRE 11/29/2011 A Spatial Planning and Analysis System for Wildland Fire Management Welcome is an advanced and powerful spatial fire management planning and analysis system which is designed to provide visual and analytic support for fire management planning, decisions and communication. The system

Note: This page contains sample records for the topic "finer spatial resolution" 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

Covariance Tapering for Interpolation of Large Spatial Datasets  

E-Print Network (OSTI)

Covariance Tapering for Interpolation of Large Spatial Datasets Reinhard FURRER, Marc G. GENTON results. An application to a large climatological precipitation dataset is presented as a concrete-based methods make it possible to analyze and fit large spatial datasets in a high level Reinhard Furrer

Genton, Marc G.

442

Universality for Multi-terminal Problems via Spatial Coupling  

E-Print Network (OSTI)

. Spatially Coupled Codes . . . . . . . . . . . . . . . . . . . 52 1. The (l; r; L) Ensemble . . . . . . . . . . . . . . . . . . 53 viii CHAPTER Page 2. The (l; r; L; w) Ensemble . . . . . . . . . . . . . . . . 54 3. Density Evolution of the (l; r; L; w... . . . . . . . . . . . . . . . . 61 V APPLICATIONS OF SPATIAL COUPLING* : : : : : : : : : : 67 A. The Noisy Slepian-Wolf Problem . . . . . . . . . . . . . . 67 1. The (l; r; L; w) Ensemble . . . . . . . . . . . . . . . . 68 2. Density Evolution of the (l; r; L; w) Ensemble...

Yedla, Arvind

2012-10-19T23:59:59.000Z

443

10 Leveraging the Power of Spatial Data Mining to  

E-Print Network (OSTI)

). As a toolbox, a GIS allows planners to perform spatial analysis using geo-processing functions, such as map (descriptive and predictive) patterns, which are never explicitly represented in topographic maps or in a GIS257 10 Leveraging the Power of Spatial Data Mining to Enhance the Applicability of GIS Technology

Malerba, Donato

444

Spatial working memory in rats: no differences between the sexes  

Science Journals Connector (OSTI)

...November 1999 research-article Spatial working memory in rats: no differences between the sexes Susan D Healy 1 2...spatial learning and memory abilities of male and female rats. The rats were tested across a number of consecutive days during...

1999-01-01T23:59:59.000Z

445

CONNECTING THE SUN'S HIGH-RESOLUTION MAGNETIC CARPET TO THE TURBULENT HELIOSPHERE  

SciTech Connect

The solar wind is connected to the Sun's atmosphere by flux tubes that are rooted in an ever-changing pattern of positive and negative magnetic polarities on the surface. Observations indicate that the magnetic field is filamentary and intermittent across a wide range of spatial scales. However, we do not know to what extent the complex flux-tube topology seen near the Sun survives as the wind expands into interplanetary space. In order to study the possible long-distance connections between the corona and the heliosphere, we developed new models of turbulence-driven solar wind acceleration along empirically constrained field lines. We used a potential field model of the quiet Sun to trace field lines into the ecliptic plane with unprecedented spatial resolution at their footpoints. For each flux tube, a one-dimensional model was created with an existing wave/turbulence code that solves equations of mass, momentum, and energy conservation from the photosphere to 4 AU. To take account of stream-stream interactions between flux tubes, we used those models as inner boundary conditions for a time-steady magnetohydrodynamic description of radial and longitudinal structure in the ecliptic. Corotating stream interactions smear out much of the smallest-scale variability, making it difficult to see how individual flux tubes on granular or supergranular scales can survive out to 1 AU. However, our models help clarify the level of ''background'' variability with which waves and turbulent eddies should be expected to interact. Also, the modeled fluctuations in magnetic field magnitude were seen to match measured power spectra quite well.

Cranmer, Steven R.; Van Ballegooijen, Adriaan A.; Woolsey, Lauren N. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2013-04-20T23:59:59.000Z

446

High-Resolution X-ray Imaging of the Colliding Wind Shock in WR147  

E-Print Network (OSTI)

We analyze new high-resolution Chandra X-ray images of the Wolf-Rayet binary system WR147. This system contains a WN8 star with an early-type companion located 0.6'' to its north, and is the only known early-type binary with a separation on the sky large enough for the wind-wind collision between the stars to currently be resolved at X-ray energies. The 5 ksec Chandra HRC-I image provides the first direct evidence for spatially extended X-ray emission in an early-type binary system. The X-ray emission peaks close to the position of the radio bow shock and north of the WN8 star. A deeper X-ray image is needed to accurately determine the degree of spatial extension, to exactly align the X-ray and optical/radio frames, and to determine whether part of the detected X-ray emission arises in the individual stellar winds. Simulated X-ray images of the wind-wind collision have a FWHM consistent with the data, and maximum likelihood fits suggest that a deeper observation may also constrain the inclination and wind momentum ratio of this system. However, as the WR wind dominates the colliding wind X-ray emission it appears unlikely that the mass-loss rate and the terminal velocity of the companion wind can be separately determined from X-ray observations. We also note an inconsistency between numerical and analytical estimates of the X-ray luminosity ratio of the stronger and weaker wind components, and conclude that the analytical results are in error.

J. M. Pittard; I. R. Stevens; P. M. Williams; A. M. T. Pollock; S. L. Skinner; M. F. Corcoran; A. F. J. Moffat

2002-04-12T23:59:59.000Z

447

Rapid production of optimal-quality reduced-resolution representations of very large databases  

DOE Patents (OSTI)

View space representation data is produced in real time from a world space database representing terrain features. The world space database is first preprocessed. A database is formed having one element for each spatial region corresponding to a finest selected level of detail. A multiresolution database is then formed by merging elements and a strict error metric is computed for each element at each level of detail that is independent of parameters defining the view space. The multiresolution database and associated strict error metrics are then processed in real time for real time frame representations. View parameters for a view volume comprising a view location and field of view are selected. The error metric with the view parameters is converted to a view-dependent error metric. Elements with the coarsest resolution are chosen for an initial representation. Data set first elements from the initial representation data set are selected that are at least partially within the view volume. The first elements are placed in a split queue ordered by the value of the view-dependent error metric. If the number of first elements in the queue meets or exceeds a predetermined number of elements or whether the largest error metric is less than or equal to a selected upper error metric bound, the element at the head of the queue is force split and the resulting elements are inserted into the queue. Force splitting is continued until the determination is positive to form a first multiresolution set of elements. The first multiresolution set of elements is then outputted as reduced resolution view space data representing the terrain features.

Sigeti, David E. (Los Alamos, NM); Duchaineau, Mark (Livermore, CA); Miller, Mark C. (Davis, CA); Wolinsky, Murray (Santa Fe, NM); Aldrich, Charles (Santa Fe, NM); Mineev-Weinstein, Mark B. (Los Alamos, NM)

2001-01-01T23:59:59.000Z

448

High order finite difference methods with subcell resolution for stiff multispecies detonation capturing  

E-Print Network (OSTI)

High order finite difference methods with subcell resolution for stiff multispecies detonation words: stiff reaction term, shock capturing, detonation, WENO, ENO subcell resolution, multispecies

Shu, Chi-Wang

449

Pixel super-resolution in serial time-encoded amplified microscopy (STEAM)  

Science Journals Connector (OSTI)

We propose pixel super-resolution serial time-encoded amplified microscopy (STEAM) for achieves high speed and high-resolution imaging - relaxing the stringent requirement on the...

Wong, Terence T W; Chan, Antony; Wong, Kenneth K Y; Tsia, Kevin K

450

Which Bulb Is Right for You? (High-Resolution JPG Billboard)...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

More Documents & Publications Which Bulb Is Right for You? (High-Resolution EPS Billboard) Which Bulb Is Right for You? (Low-Resolution JPG Billboard) Goodbye, Watts....

451

E-Print Network 3.0 - activities resolution adopted Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

asks the company to adopt an 11-point code... , 2004) Resolution: Adopt Code of Conduct for China operations. ACIR Recommendation: The Committee... ) Resolution: The...

452

Deep-towed High Resolution multichannel seismic imaging  

Science Journals Connector (OSTI)

Abstract High Resolution (220–1050 Hz) seismic acquisition performed in deep water using deep-towed systems provides unrivalled lateral resolution when compared to conventional surface seismic. The lateral resolution of these acquisitions is controlled by the width of the first Fresnel zone, taking advantage of their positions close to the sea bottom. No current existing deep towed equipment can benefit from seismic imaging processing techniques to improve this resolution as a consequence of positioning inaccuracies. The technological developments of a digital deep-towed multichannel streamer are presented with a particular attention to positioning: each hydrophone incorporates a pitch, roll and heading sensor in order to monitor the constant deformation of the streamer in operation. The sea trials took place in July 2013 in the Mediterranean Sea. Pre-stack depth migration applied to the deep-towed multichannel data illustrates the potential of this emerging methodology in terms of penetration (12 dB improvement in Signal/Noise) and lateral resolution (mean signal wavelength: 3 m) when compared with deep-towed single-channel acquisition.

B. Marsset; E. Menut; S. Ker; Y. Thomas; J.-P. Regnault; P. Leon; H. Martinossi; L. Artzner; D. Chenot; S. Dentrecolas; B. Spychalski; G. Mellier; N. Sultan

2014-01-01T23:59:59.000Z

453

Measurements of Spatially Resolved Velocity Variations in Shock Compressed Heterogeneous Materials Using a Line-Imaging Velocity Interferometer  

SciTech Connect

Relatively straightforward changes in the optical design of a conventional optically recording velocity interferometer system (ORVIS) can be used to produce a line-imaging velocity interferometer wherein both temporal and spatial resolution can be adjusted over a wide range. As a result line-imaging ORVIS can be tailored to a variety of specific applications involving dynamic deformation of heterogeneous materials as required by the characteristic length scale of these materials (ranging from a few {micro}m for ferroelectric ceramics to a few mm for concrete). A line-imaging ORVIS has been successfully interfaced to the target chamber of a compressed gas gun driver and fielded on numerous tests in combination with simultaneous measurements using a dual delay-leg, ''push-pull'' VISAR system. These tests include shock loading of glass-reinforced polyester composites, foam reverberation experiments (measurements at the free surface of a thin aluminum plate impacted by foam), and measurements of dispersive velocity in a shock-loaded explosive simulant (sugar). Comparison of detailed spatially-resolved material response to the spatially averaged VISAR measurements will be discussed.

ASAY,JAMES R.; CHHABILDAS,LALIT C.; KNUDSON,MARCUS D.; TROTT,WAYNE M.

1999-09-01T23:59:59.000Z

454

Application Of High-Resolution Thermal Infrared Sensors For Geothermal  

Open Energy Info (EERE)

High-Resolution Thermal Infrared Sensors For Geothermal High-Resolution Thermal Infrared Sensors For Geothermal Exploration At The Salton Sea, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Application Of High-Resolution Thermal Infrared Sensors For Geothermal Exploration At The Salton Sea, California Details Activities (2) Areas (1) Regions (0) Abstract: The Salton Sea geothermal field straddles the southeast margin of the Salton Sea in California, USA. This field includes approximately 20km2 of mud volcanoes and mud pots and centered on the Mullet Island thermal anomaly. The area has been previously exploited for geothermal power; there are currently seven power plants in the area that produce 1000 MW. The field itself is relatively un-vegetated, which provides for unfettered

455

PATTERN: Advantages of High Resolution Weather Radar Networks [EVS Event]  

NLE Websites -- All DOE Office Websites (Extended Search)

PATTERN: Advantages of High Resolution Weather Radar Networks PATTERN: Advantages of High Resolution Weather Radar Networks September 30, 2013 Speaker: Dr. Katharina Lengfeld Meteorological Institute, University of Hamburg, Germany Date: Monday, September 30, 2013 Time: 11 am - 12 noon Location: Argonne National Laboratory TCS Building 240 Room 4301 Precipitation observations with radars operating in the X-band frequency range are essential for meeting present and future requirements for flood forecasting, water management, and other hydro-meteorological applications. Besides having higher resolution, these systems are cost-effective compared to S- or C-band radars because of smaller antenna size. Disadvantages of single X-band radars are the large influence of attenuation by liquid water and a relatively short range.

456

MERIX - medium resolution (R)IXS at the APS  

NLE Websites -- All DOE Office Websites (Extended Search)

MERIX MERIX MERIX is a medium energy resolution 6 circle diffractometer for non-resonant and resonant inelastic x-ray measurements. Detect Strip detector: dramatically more collected phonons at a given energy resolution compared to conventional detectors (principle of operation). Pin diode detector mounted on the two theta arm for final sample alignment Fluorescence detector: for absorption measurements on samples Spot size: focused horizontal x vertical = 45 um x 6 um, unfocussed = 2.2 mm x 0.4 mm Momentum resolution varies with incident energy but the angular acceptance of the analyzer is 5.7 degrees. This can be reduced with slits. Maximum two-theta is 90 (horizontal) and 62 (vertical). chi range is -15 to 20 or 75 to 110 (depending on which phi circle is used)

457

NREL GIS Data: Alaska Low Resolution Photovoltaic Solar Resource | OpenEI  

Open Energy Info (EERE)

8 8 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142278078 Varnish cache server NREL GIS Data: Alaska Low Resolution Photovoltaic Solar Resource Dataset Summary Description Abstract: Monthly and annual average solar resource potential for Alaska. Purpose: Provide information on the solar resource potential for Alaska. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal equal to the latitude of the collector location. Supplemental_Information: This data provides monthly average and annual average daily total solar resource averaged over surface cells of approximatley 40 km by 40 km in size. This data was developed from the Climatological Solar Radiation (CSR) Model. The CSR model was developed by the National Renewable Energy Laboratory for the U.S. Department of Energy. Specific information about this model can be found in Maxwell, George and Wilcox (1998) and George and Maxwell (1999). This model uses information on cloud cover, atmostpheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. The cloud cover data used as input to the CSR model are an 7-year histogram (1985-1991) of monthly average cloud fraction provided for grid cells of approximately 40km x 40km in size. Thus, the spatial resolution of the CSR model output is defined by this database. The data are obtained from the National Climatic Data Center in Ashville, North Carolina, and were developed from the U.S. Air Force Real Time Nephanalysis (RTNEPH) program. Atmospheric water vapor, trace gases, and aerosols are derived from a variety of sources. The procedures for converting the collector at latitude tilt are described in Marion and Wilcox (1994). Where possible, existing ground measurement stations are used to validate the data. Nevertheless, there is uncertainty associated with the meterological input to the model, since some of the input parameters are not avalible at a 40km resolution. As a result, it is believed that the modeled values are accurate to approximately 10% of a true measured value within the grid cell. Due to terrain effects and other micoclimate influences, the local cloud cover can vary significantly even within a single grid cell. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

458

SPATIAL DATA ANALYSIS WITH GIS: AN INTRODUCTION TO APPLICATION IN THE SOCIAL  

E-Print Network (OSTI)

SPATIAL DATA ANALYSIS WITH GIS: AN INTRODUCTION TO APPLICATION IN THE SOCIAL SCIENCES by Luc). #12;SPATIAL DATA ANALYSIS WITH GIS: AN INTRODUCTION TO APPLICATION IN THE SOCIAL SCIENCES INTRODUCTION What is Special About Spatial Data? An attention to location, spatial interaction, spatial structure

California at Santa Barbara, University of

459

Time series of high resolution photospheric spectra in a quiet region of the Sun. II. Analysis of the variation of physical quantities of granular structures  

E-Print Network (OSTI)

From the inversion of a time series of high resolution slit spectrograms obtained from the quiet sun, the spatial and temporal distribution of the thermodynamical quantities and the vertical flow velocity is derived as a function of logarithmic optical depth and geometrical height. Spatial coherence and phase shift analyzes between temperature and vertical velocity depict the height variation of these physical quantities for structures of different size. An average granular cell model is presented, showing the granule-intergranular lane stratification of temperature, vertical velocity, gas pressure and density as a function of logarithmic optical depth and geometrical height. Studies of a specific small and a specific large granular cell complement these results. A strong decay of the temperature fluctuations with increasing height together with a less efficient penetration of smaller cells is revealed. The T -T coherence at all granular scales is broken already at log tau =-1 or z~170 km. At the layers beyon...

Puschmann, K G; Vazquez, M; Bonet, J A; Hanslmeier, A; 10.1051/0004-6361:20047193

2012-01-01T23:59:59.000Z

460

Application of PILATUS II Detector Modules for High Resolution X-Ray Imaging Crystal Spectrometers on the Alcator C-Mod Tokamak  

SciTech Connect

A new type of X-ray imaging crystal spectrometer for Doppler measurements of the radial profiles of the ion temperature and plasma rotation velocity in tokamak plasmas is presently being developed in a collaboration between various laboratories. The spectrometer will consist of a spherically bent crystal and a two-dimensional position sensitive detector; and it will record temporally and spatially resolved X-ray line spectra from highly-charged ions. The detector must satisfy challenging requirements with respect to count rate and spatial resolution. The paper presents the results from a recent test of a PILATUS II detector module on Alcator C-Mod, which demonstrate that the PILATUS II detector modules will satisfy these requirements.

M.L. Bitter, Ch. Borennimann, E.F. Eikenberry, K.W. Hill, A. Ince-Chushman, S.G. Lee, J.E. Rice, and S. Scott.

2007-07-23T23:59:59.000Z

Note: This page contains sample records for the topic "finer spatial resolution" 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

In situ diagnostic of liquid water distribution in cathode catalyst layer in an operating PEMFC by high-resolution soft X-ray radiography  

Science Journals Connector (OSTI)

To investigate the water transport behavior in the cathode catalyst layer (CCL) of an operating proton exchange membrane fuel cell (PEMFC), we examined transversal liquid water distributions in the CCL by using high-resolution soft X-ray radiography. The liquid water concentration gradient across the CCL was observed at a spatial resolution of 1.5 ?m. More liquid water accumulated in the CCL at the gas diffusion layer side than at the polymer electrolyte membrane side. The effect of accumulated liquid water in the CCL on the charge-transfer resistance was confirmed by electrochemical impedance spectroscopy. Liquid water accumulation in the CCL corresponds to deterioration of charge-transfer in the electrode.

Phengxay Deevanhxay; Takashi Sasabe; Shohji Tsushima; Shuichiro Hirai

2012-01-01T23:59:59.000Z

462

High resolution collimator system for X-ray detector  

DOE Patents (OSTI)

High resolution in an X-ray computerized tomography (CT) inspection system is achieved by using a collimator/detector combination to limit the beam width of the X-ray beam incident on a detector element to the desired resolution width. In a detector such as a high pressure Xenon detector array, a narrow tapered collimator is provided above a wide detector element. The collimator slits have any desired width, as small as a few mils at the top, the slit width is easily controlled, and they are fabricated on standard machines. The slit length determines the slice thickness of the CT image.

Eberhard, Jeffrey W. (Schenectady, NY); Cain, Dallas E. (Scotia, NY)

1987-01-01T23:59:59.000Z

464

Estimation of simultaneous systems of spatially interrelated cross sectional equations  

Science Journals Connector (OSTI)

In this paper we consider a simultaneous system of spatially interrelated cross sectional equations. Our specification incorporates spatial lags in the endogenous and exogenous variables. In modelling the disturbance process we allow for both spatial correlation as well as correlation across equations. The data set is taken to be a single cross section of observations. The model may be viewed as an extension of the widely used single equation Cliff-Ord model. We suggest computationally simple limited and full information instrumental variable estimators for the parameters of the system and give formal large sample results.

Harry H. Kelejian; Ingmar R. Prucha

2004-01-01T23:59:59.000Z

465

HELIOS: A helium line-ratio spectral-monitoring diagnostic used to generate high resolution profiles near the ion cyclotron resonant heating antenna on TEXTOR  

SciTech Connect

Radial profiles of electron temperature and density are measured at high spatial ({approx}1 mm) and temporal ( Greater-Than-Or-Slanted-Equal-To 10 {mu}s) resolution using a thermal supersonic helium jet. A highly accurate detection system is applied to well-developed collisional-radiative model codes to produce the profiles. Agreement between this measurement and an edge Thomson scattering measurement is found to be within the error bars ( Less-Than-Or-Equivalent-To 20%). The diagnostic is being used to give profiles near the ion cyclotron resonant heating antenna on TEXTOR to better understand RF coupling to the core.

Unterberg, E. A.; Fehling, D. H.; Klepper, C. C.; Hillis, D. L. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6169 (United States); Schmitz, O. [Insitut fuer Energieforschung-Plasmaphysik, Forschungszentrum Juelich GmbH, Association EURATOM-FZJ, D-52428 Juelich (Germany); Stoschus, H. [Insitut fuer Energieforschung-Plasmaphysik, Forschungszentrum Juelich GmbH, Association EURATOM-FZJ, D-52428 Juelich (Germany); Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee 37831-0117 (United States); Munoz-Burgos, J. M. [Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee 37831-0117 (United States); Van Wassenhove, G. [LPP-ERM/KMS, Association EURATOM-Belgian State, B-1000 Brussels (Belgium)

2012-10-15T23:59:59.000Z

466

Upgrades of the high resolution imaging x-ray crystal spectrometers on experimental advanced superconducting tokamak  

SciTech Connect

Two imaging x-ray crystal spectrometers, the so-called 'poloidal' and 'tangential' spectrometers, were recently implemented on experimental advanced superconducting tokamak (EAST) to provide spatially and temporally resolved impurity ion temperature (T{sub i}), electron temperature (T{sub e}) and rotation velocity profiles. They are derived from Doppler width of W line for Ti, the intensity ratio of Li-like satellites to W line for Te, and Doppler shift of W line for rotation. Each spectrometer originally consisted of a spherically curved crystal and a two-dimensional multi-wire proportional counter (MWPC) detector. Both spectrometers have now been upgraded. The layout of the tangential spectrometer was modified, since it had to be moved to a different port, and the spectrometer was equipped with two high count rate Pilatus detectors (Model 100 K) to overcome the count rate limitation of the MWPC and to improve its time resolution. The poloidal spectrometer was equipped with two spherically bent crystals to record the spectra of He-like and H-like argon simultaneously and side by side on the original MWPC. These upgrades are described, and new results from the latest EAST experimental campaign are presented.

Lu, B.; Wang, F.; Fu, J.; Li, Y.; Wan, B. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui (China); Shi, Y. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui (China); National Fusion Research Institute, 52 Eoeun-Dong, Yusung-Gu, Daejeon (Korea, Republic of); Bitter, M.; Hill, K. W. [Princeton Plasma Physics Laboratory, MS37-B332, Princeton, New Jersey 08543-0451 (United States); Lee, S. G. [National Fusion Research Institute, 52 Eoeun-Dong, Yusung-Gu, Daejeon (Korea, Republic of)

2012-10-15T23:59:59.000Z

467

A Very High Spectral Resolution Study of Ground-State OH Masers in W3(OH)  

E-Print Network (OSTI)

We present VLBA observations of the ground-state hydroxyl masers in W3(OH) at 0.02 km s-1 spectral resolution. Over 250 masers are detected, including 56 Zeeman pairs. Lineshapes are predominantly Gaussian or combinations of several Gaussians, with normalized deviations typically of the same magnitude as in masers in other species. Typical FWHM maser linewidths are 0.15 to 0.38 km s-1 and are larger in the 1665 MHz transition than in the other three ground-state transitions. The satellite-line 1612 and 1720 MHz masers show no evidence of sigma^+/-2,3 components. The spatial positions of most masers are seen to vary across the line profile, with many spots showing clear, organized positional gradients. Equivalent line-of-sight velocity gradients in the plane of the sky typically range from 0.01 to 1 km s-1 AU-1 (i.e., positional gradients of 1 to 100 AU (km s-1)-1). Small velocity gradients in the 1667 MHz transition support theoretical predictions that 1667 MHz masers appear in regions with small velocity shifts along the amplification length. Deconvolved maser spot sizes appear to be larger in the line wings but do not support a spherical maser geometry.

Vincent L. Fish; Walter F. Brisken; Loránt O. Sjouwerman

2006-04-25T23:59:59.000Z

468

ModelingAtmosphericChemistryand Transport with Dynamic Adaptive Resolution  

E-Print Network (OSTI)

pollution has important implications for urban and regional air quality, for human health, and for climate avenues. Advantages and shortcomings of the present approach are also discussed. Keywords: air pollution be an important source of errors in CTMs. In air pollution simulations large spatial gradients of tracer

Sandu, Adrian

469

Estimating Velocity Fields on a Freeway from Low Resolution Video  

E-Print Network (OSTI)

] detects and tracks vehicles within a detection zone (roughly a rect- angle the size of a vehicle) and integrates their spatial and temporal signatures to measure their speeds. The ACTIONS system [4], detects camera. The TITAN system [6] uses mathematical morphology to extract individual vehicle features

Rice, John

470

Generative Models for Super-Resolution Single Molecule Microscopy Images of Biological Structures  

E-Print Network (OSTI)

an information bridge between super-resolution microscopy and structural biology by using generative models

Matsuda, Noboru

471

Single molecule high-resolution colocalization of Cy3 and Cy5 attached to macromolecules measures  

E-Print Network (OSTI)

Single molecule high-resolution colocalization of Cy3 and Cy5 attached to macromolecules measures, 2004 Here we present a technique called single-molecule high-resolution colocalization (SHREC's lower resolution limit lies at the upper resolution limit of single molecule FRET (smFRET) microscopy

Spudich, James A.

472

ARM - Publications: Science Team Meeting Documents: Spatially Distributed  

NLE Websites -- All DOE Office Websites (Extended Search)

Spatially Distributed CO2, Sensible, and Latent Heat Fluxes over the Spatially Distributed CO2, Sensible, and Latent Heat Fluxes over the Southern Great Plains Biraud, Sebastien Lawrence Berkeley National Laboratory Riley, William Lawrence Berkeley National Laboratory Fischer, Marc Lawrence Berkeley National Laboratory Torn, Margaret Lawrence Berkeley National Laboratoroy Berry, Joseph Carnegie Inst.of Washington Cooley, Heather Lawrence Berkeley National Laboratory Vegetation and vegetation processes strongly influence the spatial distribution of sensible and latent heat fluxes, as well as controlling ecosystem-atmosphere CO2 exchange. Estimating spatially distributed ecosystem fluxes is important for ARM cloud modeling and for the North American Carbon Program. We describe here a methodology to estimate surface energy fluxes and net ecosystem CO2 Exchange (NEE) continuously over the

473

Towards Modeling Dynamic Behavior with Integrated Qualitative Spatial Relations  

Science Journals Connector (OSTI)

Situation awareness and geographic information systems in dynamic spatial systems such as road traffic management (RTM) aim to detect and predict critical situations on the basis of relations between entities....

Stefan Mitsch; Werner Retschitzegger…

2011-01-01T23:59:59.000Z

474

Spatial organization of the international tourism flows in Jordan  

E-Print Network (OSTI)

Spatial organization of the international tourism flows in Jordan Abstract Package tours in Jordan show that one theory can not explain the whole tourism network at Jordan. In case of Amman

475

A training methodology for spatial orientation in spacecraft  

E-Print Network (OSTI)

This thesis investigates a way to use virtual reality techniques to teach space vehicle inhabitants about the configuration of their craft so that their performance in orientation and spatial memory tasks is improved. An ...

Buckland, Daniel Aaron

2006-01-01T23:59:59.000Z

476

Spatial Valuation of Open Space Externalities in Baltimore County, Maryland  

E-Print Network (OSTI)

Different open space types are assumed to be valued in different ways by the public. This thesis analyzes four spatially explicit hedonic models of Baltimore County, Maryland to examine the effect of six different open spaces types on house value...

Gurung, Kushal

2012-11-08T23:59:59.000Z

477

Planning support systems for spatial planning through social learning  

E-Print Network (OSTI)

This dissertation examines new professional practices in urban planning that utilize new types of spatial planning support systems (PSS) based on geographic information systems (GIS) software. Through a mixed-methods ...

Goodspeed, Robert (Robert Charles)

2013-01-01T23:59:59.000Z

478

Spatial Analysis Methods in Demography & Sustainability Science Rob Strawderman  

E-Print Network (OSTI)

Spatial Analysis Methods in Demography & Sustainability Science Rob Strawderman Department demography, and contemporary sustainability science, whether around planning, spatiotemporal modeling, Cornell University, Ithaca, NY 14853 College of Agriculture and Life Sciences College of Architecture, Art

Angenent, Lars T.

479

Measurement and Modeling of Spatial NH3 Storage Distributions...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

in a Commercial Small Port Cu Zeolite Urea SCR Catalyst Measurement and Modeling of Spatial NH3 Storage Distributions in a Commercial Small Port Cu Zeolite Urea SCR Catalyst...

480

Reading Abilities: Importance of Visual-Spatial Attention  

E-Print Network (OSTI)

Children with dyslexia may read poorly for several reasons. Recent research suggests that in addition to skills with language sounds, visual-spatial attention may be an important predictor of reading abilities.

Gabrieli, John D.E.

Note: This page contains sample records for the topic "finer spatial resolution" 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

Fundamental clusters in spatial 2×2 games  

Science Journals Connector (OSTI)

...holds but equation (17) does not, does the central site protect...apply: 764 Ch. Hauert Fundamental clusters in spatial 2...note that the reverse does not necessarily hold...powerful approximations to fundamental clusters. 3. CLUSTER...

2001-01-01T23:59:59.000Z

482

Correctness of depiction in planar diagrams of spatial figures  

E-Print Network (OSTI)

We show that it is possible to decide whether a given planar diagram correctly depicts the spatial figure consisting of a planar quadrangle together with its shadow in another plane.

P. L. Robinson

2014-03-12T23:59:59.000Z

483

Spatially and polarization resolved plasmon mediated transmission through continuous metal  

E-Print Network (OSTI)

Spatially and polarization resolved plasmon mediated transmission through continuous metal films Y transmission through an embedded undulated continuous thin metal film under normal incidence. 1D undulations resolved, polarization independent transmission. Whereas the needed submicron microstructure lends itself

Boyer, Edmond

484

Measurement error caused by spatial misalignment in environmental epidemiology  

Science Journals Connector (OSTI)

......particulate matter generated by motor vehicles and birth weight in the greater Boston...spatial prediction. Environmental and Ecological Statistics (1999) 6:147-171. Gelman...Health-exposure modeling and the ecological fallacy. Biostatistics (2006) 7......

Alexandros Gryparis; Christopher J. Paciorek; Ariana Zeka; Joel Schwartz; Brent A. Coull

2009-04-01T23:59:59.000Z

485

Spatial distribution of deposition within a patch of vegetation  

E-Print Network (OSTI)

This laboratory study describes the spatial pattern of deposition observed in a patch of vegetation located at the wall of a channel. There are two sources of sediment flux to the patch: the advection of particles across ...

Zong, Lijun

486

Analysis of Spatial Performance of Meteorological Drought Indices  

E-Print Network (OSTI)

by policy makers and the general public. This study analyzes the spatial performance of interpolation methods for meteorological drought indices in the United States based on data from the Co-operative Observer Network (COOP) and United States Historical...

Patil, Sandeep 1986-

2013-01-14T23:59:59.000Z

487

A multisensory observer model for human spatial orientation perception  

E-Print Network (OSTI)

Quantitative "observer" models for spatial orientation and eye movements have been developed based on 1-G data from humans and animals (e.g. Oman 1982, 1991, Merfeld, et al 1993, 2002; Haslwanter 2000, Vingerhoets 2006). ...

Newman, Michael C. (Michael Charles)

2009-01-01T23:59:59.000Z

488

Stochastic model of heterogeneity in earthquake slip spatial distributions  

Science Journals Connector (OSTI)

......research-article Seismology Stochastic model of heterogeneity in earthquake slip spatial distributions Daniel Lavallee 1 Pengcheng Liu 1 Ralph J. Archuleta 1 2 1 Institute for Crustal Studies, University of California, Santa Barbara, CA 93106, California......

Daniel Lavallée; Pengcheng Liu; Ralph J. Archuleta

2006-05-01T23:59:59.000Z

489

Optimization of the Spatial and Temporal Fuel Distribution for Stable  

NLE Websites -- All DOE Office Websites (Extended Search)

Optimization of the Spatial and Temporal Fuel Distribution for Stable Optimization of the Spatial and Temporal Fuel Distribution for Stable Combustion in Lean Premixed Combustors Speaker(s): Jong Guen Lee Date: November 30, 2000 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Robert Cheng The limited success that has been achieved to date in suppressing unstable combustion in lean premixed combustors has been based on the use one of three approaches: a pilot flame, active combustion control using either primary or secondary fuel flow modulation, or modification of the fuel time lag. What these approaches have in common is that they all involve changing the spatial and/or temporal fuel distribution in a manner, which suppresses a given instability. In this presentation, results are presented from an experimental study of the effect of the spatial and temporal fuel

490

High speed switching between arbitrary spatial light profiles  

Science Journals Connector (OSTI)

Complex images, inscribed into the spatial profile of a laser beam or even a single photon, offer a highly efficient method of data encoding. Here we present a prototype system which...

Radwell, N; Brickus, D; Clark, T W; Franke-Arnold, S

2014-01-01T23:59:59.000Z

491

Merging High Resolution Geophysical and Geochemical Surveys to Reduce  

Open Energy Info (EERE)

Merging High Resolution Geophysical and Geochemical Surveys to Reduce Merging High Resolution Geophysical and Geochemical Surveys to Reduce Exploration Risk at Glass Buttes, Oregon Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Merging High Resolution Geophysical and Geochemical Surveys to Reduce Exploration Risk at Glass Buttes, Oregon Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Validation of Innovative Exploration Technologies Project Description This program will combine detailed gravity, high resolution aeromagnetic, and LIDAR data, all of which will be combined for structural modeling, with hyperspectral data, which will identify and map specific minerals and mineral assemblages that may point to upflow zones. The collection of these surveys and analyses of the merged data and model will be used to site deeper slim holes. Slim holes will be flow tested to determine whether or not Ormat can move forward with developing this resource. An innovative combination of geophysical and geochemical tools will significantly reduce risk in exploring this area, and the results will help to evaluate the value of these tools independently and in combination when exploring for blind resources where structure, permeability, and temperature are the most pressing questions. The slim holes will allow testing of models and validation of methods, and the surveys within the wellbores will be used to revise the models and site production wells if their drilling is warranted.

492

Local and Global Context for Supervised and Unsupervised Metonymy Resolution  

E-Print Network (OSTI)

.judea@ims.uni-stuttgart.de Katja Markert University of Leeds Leeds, UK K.Markert@leeds.ac.uk Michael Strube HITS gGmbH HeidelbergEval 2007 metonymy resolution task (Markert and Nis- sim, 2009). (1) In the gold medal game, Canada defeated expression or word (here Canada) stands for a conceptually re- lated entity (here, people of Canada

493

Radiology utilizing a gas multiwire detector with resolution enhancement  

DOE Patents (OSTI)

This invention relates to a process and apparatus for obtaining filmless, radiological, digital images utilizing a gas multiwire detector. Resolution is enhanced through projection geometry. This invention further relates to imaging systems for X-ray examination of patients or objects, and is particularly suited for mammography.

Majewski, Stanislaw (Grafton, VA); Majewski, Lucasz A. (Grafton, VA)

1999-09-28T23:59:59.000Z

494

A High-resolution Method for Realistic Detonation Structure Simulation  

E-Print Network (OSTI)

A High-resolution Method for Realistic Detonation Structure Simulation R. Deiterding Abstract. Detonation simulation is one of the computationally most challenging hyperbolic problems of practical. Introduction Detonations are shock-induced combustion waves that internally consist of a dis- continuous

Deiterding, Ralf

495

Image Super-Resolution for Improved Automatic Target Recognition  

E-Print Network (OSTI)

from the literature suited to real-time application on forward-looking infrared (FLIR) images. Keywords: Super-Resolution, Automatic Target Recognition, FLIR 1. INTRODUCTION The fidelity of data gathered by forward-looking infrared (FLIR) imagers is limited by the quality of the optical and electronic

496

Selecting Representative High Resolution Sample Images for Land Cover Studies.  

E-Print Network (OSTI)

explore the com- tained using the TM map. The performance of samples selected by a combination of cover composition and con-bined use of coarse and fine resolution data in land cover studies. It describes composition at the regional scale. The Purposive Selection Algorithm (PSA) cover studies in which both large

Li, Zhanqing

497

Russia, China veto UN resolution on Syria 4 February 2012  

E-Print Network (OSTI)

Russia, China veto UN resolution on Syria 4 February 2012 UNITED NATIONS (AP) ­ The U.N. Security Council failed again Saturday to take decisive action to stop the escalating violence in Syria as Russia. It was the second time in four months that Russia and China used their veto power to block a Security Council

498

High-Resolution, Parallel Visualization of Turbomachinery Flowelds  

E-Print Network (OSTI)

High-Resolution, Parallel Visualization of Turbomachinery Flowelds Michael G. List , Mark G Turbomachinery post- and co-processing and visualization tools are under development. The result has been in the analysis of turbomachinery. It has always been the way of the CFD analyst to expand and resolve simulations

Cincinnati, University of

499

An Atomistic study of Helium Resolution in bcc Iron  

SciTech Connect

The evolution of gas-stabilized bubbles in irradiated materials can be a significant factor in the microstructural processes that lead to mechanical property and dimensional changes in structural materials exposed to high-energy neutrons. Helium generation and accumulation is particularly important under DT fusion irradiation conditions. Although the process of ballistic resolutioning of gas from bubbles has been long-discussed in the literature, there have been few computational studies of this mechanism. Resolutioning could limit bubble growth by ejecting gas atoms back into the metal matrix. A detailed atomistic study of ballistic He resolutioning from bubbles in bcc iron has been carried out using molecular dynamics. A newly-developed Fe-He interatomic potential was employed, with the iron matrix described by the potential of Ackland and co-workers from 1997. The primary variables examined were: irradiation temperature (100 and 600K), iron knock-on atom energy (5 and 20 keV), bubble radius (~0.5 and 1.0 nm), and He-to-vacancy ratio in the bubble (0.25, 0.5 and 1.0) in order to obtain an assessment of this dynamic resolutioning mechanism. The results presented here focus on the 5 keV cascades which indicate a modest, but potentially significant level of He removal by this process.

Stoller, Roger E [ORNL; Stewart, David M [ORNL

2011-01-01T23:59:59.000Z

500

Absolute shape measurements using high-resolution optoelectronic holography methods  

E-Print Network (OSTI)

Absolute shape measurements using high- resolution optoelectronic holography methods Cosme Furlong optoelectronic holography (OEH) methodology is described. This description addresses apparatus and analysis-Optical Instrumentation Engineers. [S0091-3286(00)02601-5] Subject terms: CAD/CAE models; fiber optics; optoelectronic

Furlong, Cosme